Patent Grant
10343749
This application is a 371 of international application of PCT application serial no. PCT/CN2016/094256, filed on Aug. 9, 2016, which claims the priority benefit of China application no. 201510586853.2, filed on Sep. 15, 2015. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification.
In the technical field of submersibles, the present invention relates to a pressure structure of a deep-sea submersible, and in particular, to a self-balancing pressure hull device of three layers in a pressure decline mode.
As the speed of ocean development continues to accelerate, the depth of exploration from offshore to distant sea constantly increases. Submersibles with various functions are of a great variety and develop rapidly, which are mainly applied in marine resource exploration and development, scientific research, military exploration, salvage, and other aspects. A submersible is important equipment for ocean exploration and deep-sea scientific research. As a crucial part of the submersible, a pressure hull is used to guarantee normal operation of internal apparatuses and health and safety of the crew in a diving process. The weight thereof accounts for ¼ to ½ of the total weight of the submersible. The design of the pressure hull has an important influence on performance such as safety of the submersible, a carrying capacity, a man-machine environment, and the like. The submersible withstands a high pressure and low temperature in the deep sea, and the flow of the sea water further causes the submersible to vibrate. However, various instruments and apparatuses carried in the submersible generally need to operate under normal pressure and temperature, and survival conditions of submerged members further need to approach those on land. Therefore, there is a high requirement on a pressure structure of the submersible.
The deep-sea submersible mainly has the following problems:
(1) The deep-sea submersible greatly vibrates under complicated underwater conditions, thus greatly affecting stable operations of various instruments and apparatuses, and the working environment of researchers. An existing submersible mainly uses a relatively complicated negative feedback closed-loop control system to control multiple groups of propellers disposed around the submersible, to adjust the posture of the submersible and reduce the vibration. However, such a control manner needs to consume a lot of energy, and the whole control system has a complicated structure and low reliability. For a single-layer pressure hull, even after a counterweight is added to the bottom, it is still difficult to eliminate or reduce the vibration of the pressure hull caused by the flow of the external sea water.
(2) For the deep-sea submersible, the pressure hull withstands a high external water pressure. If a conventional single-layer pressure hull is used, a high-strength material needs to be used or the thickness of the hull needs to be increased. The range of optional materials is small and the processing difficulty is great.
(3) The deep-sea submersible produces big noise during operation, which severely affects underwater work of the researchers and normal operation of communication devices. Thus, the hull needs to have a desirable soundproof property. The water temperature is low in the deep sea, and therefore the hull further needs to have a desirable thermal insulation and heat preservation function. The existing submersibles mostly use a composite material or plate and shell structure to weaken the noise. However, such a soundproof manner weakens the noise only in a certain range, and it is difficult to eliminate the noise or reduce it to a low value. In order to maintain the constant temperature inside the compartment in a low-temperature environment, a high-power temperature control device and a thermal insulation material are usually used to maintain the constant temperature inside the compartment of the submersible. However, such a temperature control manner has a high requirement on performance of a temperature control apparatus, and the temperature control apparatus needs to consume a lot of energy.
To solve the foregoing problems, the present invention provides a novel self-balancing pressure hull device in a pressure decline mode.
To achieve the foregoing objective, the technical solution of the present invention is as follows:
A self-balancing pressure hull device is assembled by successively nesting, from inside to outside, a spherical inner housing, a spherical intermediate housing and a spherical outer housing around the sphere center, two pairs of symmetric coaxial connecting shaft assemblies being connected between the spherical inner housing and the spherical intermediate housing and between the spherical intermediate housing and the spherical outer housing, respectively; axes of the two pairs of connecting shaft assemblies being perpendicular to each other so as to enable the spherical inner housing and the spherical intermediate housing to rotate relative to each other, and the spherical intermediate housing and the spherical outer housing to rotate relative to each other; and each of the connecting shaft assemblies in the two pairs of connecting shaft assemblies being provided with a spring damper for resisting an axial impact between each two adjacent housings.
The spherical inner housing is formed by connecting a hemispherical inner housing I and a hemispherical inner housing II, the spherical intermediate housing is formed by connecting a hemispherical intermediate housing I and a hemispherical intermediate housing II, and the spherical outer housing is formed by connecting a hemispherical outer housing I and a hemispherical outer housing II.
The two connecting shaft assemblies of the pair of the connecting shaft assemblies between the spherical intermediate housing and the spherical outer housing are of the same structure and size, and each connecting shaft assembly of the pair of the connecting shaft assemblies between the spherical intermediate housing and the spherical outer housing includes a spring damper, a slide bearing pedestal, a connecting shaft, a slide bearing, an inner bearing bush, an outer bearing bush, a bearing press plate, and a screw, the slide bearing being fixed on the connecting shaft via the bearing press plate and the screw; the inner bearing bush being disposed between an inner wall of the slide bearing and the connecting shaft; the connecting shaft being supported on an outer wall of the spherical intermediate housing; the slide bearing pedestal being supported on an inner wall of the spherical outer housing; the outer bearing bush being disposed between an outer wall of the slide bearing and the slide bearing pedestal; and the spring damper being mounted on an outer side of the slide bearing pedestal, with two ends being tightly pressed against the connecting shaft and a protrusion of the slide bearing pedestal respectively. The two connecting shaft assemblies of the pair of the connecting shaft assemblies between the spherical inner housing and the spherical intermediate housing are of the same structure and size, and each connecting shaft assembly of the pair of the connecting shaft assemblies between the spherical inner housing and the spherical intermediate housing includes a spring damper, a slide bearing pedestal, a connecting shaft, a slide bearing, an inner bearing bush, an outer bearing bush, a bearing press plate, and a screw, the slide bearing being fixed on the connecting shaft via the bearing press plate and the screw; the inner bearing bush being disposed between an inner wall of the slide bearing and the connecting shaft; the connecting shaft being supported on an outer wall of the spherical inner housing; the slide bearing pedestal being supported on an inner wall of the spherical intermediate housing; the outer bearing bush being disposed between an outer wall of the slide bearing and the slide bearing pedestal; and the spring damper being mounted on an outer side of the slide bearing pedestal, with two ends being tightly pressed against the connecting shaft and a protrusion of the slide bearing pedestal respectively.
The spherical inner housing is provided with an inner compartment hatch, the spherical intermediate housing is provided with an intermediate compartment hatch, and the spherical outer housing is provided with an outer compartment hatch, the inner compartment hatch, the intermediate compartment hatch, and the outer compartment hatch being each disposed with a circular hatch cover; an inner hatch cover is connected to the inner wall of the inner housing via an inner hatch cover connecting pin-shaft assembly, tightly pressed by an inner hatch cover press plate mounted on the inner wall of the inner housing, and sealed by an O-shaped seal ring; an intermediate hatch cover is connected to the outer wall of the inner housing via an intermediate hatch cover connecting pin-shaft assembly, tightly pressed by an intermediate hatch cover press plate mounted on the outer wall of the intermediate housing, and sealed by an O-shaped seal ring; and an outer hatch cover is connected to the outer wall of the outer housing via an outer hatch cover connecting pin-shaft assembly, tightly pressed by an outer hatch cover press plate mounted on the outer wall of the outer housing, and sealed by an O-shaped seal ring. The inner hatch cover press plate is connected to the inner housing via a mandrel assembly and tightly pressed by a screw assembly; the intermediate hatch cover press plate is connected to the intermediate housing via a mandrel assembly and tightly pressed by a screw assembly; and the outer hatch cover press plate is connected to the outer housing via a mandrel assembly and tightly pressed by a screw assembly.
Diameters D1, D2, and D3 of the spherical inner housing, the spherical intermediate housing and the spherical outer housing meet the following proportional relationship: 2:3:4, the diameter of the spherical inner housing ranging from 2.2 m to 3.1 m. Diameters L1, L2, and L3 of the inner compartment hatch, the intermediate compartment hatch and the outer compartment hatch meet the following proportional relationship: 1:1:2, the diameter of the inner compartment hatch ranging from 0.7 m to 1.1 m.
An inner hatch cover hose connector is connected to an outer hatch cover hose connector via an inner compartment hose and connector assembly to connect an inner compartment inside the spherical inner housing with an external auxiliary submersible, so as to maintain a standard air pressure in the inner compartment inside the spherical inner housing; an intermediate hatch cover hose connector is connected to the outer hatch cover hose connector via an intermediate compartment hose and connector assembly to connect an intermediate compartment between the spherical inner housing and the spherical intermediate housing with the external auxiliary submersible, so as to maintain a vacuum in the intermediate compartment between the spherical inner housing and the spherical intermediate housing; and an outer compartment between the intermediate housing and the outer housing is connected to the external auxiliary submersible via the outer hatch cover hose connector, so as to maintain an air pressure in the outer compartment between the intermediate housing and the outer housing at a half of a hydraulic pressure outside the submersible at its working depth, the outer hatch cover hose connector being a three-tier metal connector in a nesting mode, with inner, middle, and outer tiers being respectively connected to the inner, intermediate, and outer compartments via metal hoses; and the inner hatch cover hose connector, the intermediate hatch cover hose connector and the outer hatch cover hose connector being respectively connected to the inner hatch cover, the intermediate hatch cover and the outer hatch cover through threads and sealed by O-shaped seal rings.
Pairs of symmetric limiting buffers are provided between the spherical inner housing and the spherical intermediate housing and between the spherical intermediate housing and the spherical outer housing, respectively; a connecting line of the limiting buffers between the spherical inner housing and the spherical intermediate housing is perpendicular to an axis of connecting shaft assemblies between the spherical inner housing and the spherical intermediate housing; and a connecting line of the limiting buffers between the spherical intermediate housing and the spherical outer housing is perpendicular to a connecting axis of the intermediate inner housing and the spherical outer housing. The two limiting buffers between the spherical inner housing and the spherical intermediate housing are of the same structure and size, and each limiting buffer includes an upper support plate, a middle support plate, a lower support plate, an upper hydraulic damper, and a lower hydraulic damper, the middle support plate being welded to the outer wall of the spherical inner housing; the upper support plate and the lower support plate being respectively disposed on an upper support plate pedestal and a lower support plate lower pedestal which are connected to the inner wall of the spherical intermediate housing; the upper hydraulic damper and the lower hydraulic damper being symmetrically arranged about the middle support plate; one end of each of the upper hydraulic damper and the lower hydraulic damper being connected to the middle support plate via a universal joint; the other end of the upper hydraulic damper being connected to the upper support plate via a universal joint; and the other end of the lower hydraulic damper being connected to the lower support plate via a universal joint. The two limiting buffers between the spherical intermediate housing and the spherical outer housing are of the same structure and size, and each limiting buffer includes an upper support plate, a middle support plate, a lower support plate, an upper hydraulic damper, and a lower hydraulic damper, the middle support plate being welded to the outer wall of the spherical inner housing; the upper support plate and the lower support plate being respectively disposed on an upper support plate pedestal and a lower support plate pedestal which are connected to the inner wall of the spherical intermediate housing; the upper hydraulic damper and the lower hydraulic damper being symmetrically arranged about the middle support plate; one end of each of the upper hydraulic damper and the lower hydraulic damper being connected to the middle support plate via a universal joint; the other end of the upper hydraulic damper being connected to the upper support plate via a universal joint; and the other end of the lower hydraulic damper being connected to the lower support plate via a universal joint.
The upper support upper pedestal and the lower support plate pedestal are two symmetric semi-pedestals, the two semi-pedestals being welded to rims of corresponding hemispherical housings respectively; and after the two hemispherical housings are assembled into a complete spherical housing, the upper support plate and the lower support plate are clamped in the two corresponding semi-pedestals respectively.
A counterweight is placed on each of the bottoms of the spherical inner housing, the spherical intermediate housing and the spherical outer housing.
The inner, intermediate, and outer housings of the present invention are equivalent to an inner frame, a gimbal, and an outer frame of a two-axis gyroscope, respectively. A connecting shaft between each adjacent housings possesses two degrees of freedom: rotation and axial movement. Assuming that the inner housing is immovable, the outer housing possesses four degrees of freedom. Because the inner housing, and the crew and objects in the compartment have large inertia, the vibration and movement of the outer housing with respect to the water surface are almost eliminated after reaching the inner compartment through balancing by two groups of spring dampers and hydraulic dampers, ensuring stability of the inner compartment.
The three compartment doors are closed before diving of the submersible. The three-tier nesting-mode outer hatch cover hose connector is connected to a pressure machine, to maintain a standard air pressure inside the inner compartment by using an inner compartment metal hose assembly. The intermediate compartment is sucked to vacuum through an intermediate compartment metal hose assembly via a middle annular hole of the three-tier nesting-mode outer hatch cover hose connector. The existence of the vacuum intermediate compartment reduces heat dissipation from the inner compartment and further insulates the inner compartment from the outside noise. The outer compartment is filled with high-pressure inert light gas, helium, through an outer annular hole of the three-tier nesting-mode outer hatch cover hose connector 121, with a gas pressure being of a half of an external hydraulic pressure at corresponding working depth, thus greatly enhancing the operation security of the submersible and broadening the range of optional materials during manufacturing of the pressure hull of the submersible. Due to occurrence of leakage, in order to maintain the standard air pressure in the inner compartment, vacuum in the intermediate compartment, and the high pressure in the outer compartment, the three-tier nesting-mode outer hatch cover hose connector 121 needs to be connected to an auxiliary submersible, to maintain corresponding air pressures in the three compartments.
The present invention has the following beneficial effects:
(1) With reference to a structural principle of a two-axis gyroscope, the self-balancing pressure hull device of the present invention has a three-layer structure. The outermost housing is equivalent to an outer frame of the gyroscope, the intermediate housing is equivalent to a gimbal of the gyroscope, and the inner housing is equivalent to the inner frame of the gyroscope. The three housings are mutually connected by using two groups of rotary shafts, and an axis of the rotary shafts between the inner layer and the intermediate layer is perpendicular to that of the rotary shafts between the intermediate layer and the outer layer. By use of such a three-layer rotary hull structure in the mode of a two-axis gyroscope, the horizontal and vertical vibrations of the outer housing have been greatly reduced after being transferred to the inner housing, thus maintaining the inner housing relatively balanced and stable.
Ends of the shafts in the two groups are each mounted with a spring, which can reduce an axial impact between each two adjacent housings and resist relative rotation. Because a spring damper is added on each of connecting shafts between adjacent housings, the vibration of the outer housing along the horizontal direction has been greatly reduced after being transferred to the inner housing under the effect of the intermediate housing and the springs.
A self-balancing mechanical device is used, which is in a passive control manner. Therefore, a control system is simplified, the operation reliability and running stability of the submersible are improved, and the comfort of the working environment of submerged members is improved.
(2) The outer compartment between the intermediate housing and the outer housing is filled with high-pressure light gas. Therefore, the pressure is gradually reduced from the outside of the pressure hull of the submersible, to the outer compartment between the outer and the intermediate housings, and to the intermediate compartment between the intermediate and the inner housings. Compared with a single-layer hull with only the outer layer withstanding the high pressure, the present invention is greatly improved in stability, thus improving the operation security of the submersible, broadening the range of optional materials, reducing the thickness of the housings, and reducing the difficulty of processing the housings.
(3) The intermediate compartment between the intermediate housing and the inner housing is vacuum, thus preventing heat dissipation and sound transmission, maintaining relatively stable temperature inside the inner compartment, and insulating the inner compartment from big noise of an external propulsion system, so that the working environment inside the compartment is greatly improved.
In the drawings: A1—spherical inner housing, B1—spherical intermediate housing, C1—spherical outer housing C1, S1—center, 1—hemispherical inner housing, 2—hemispherical inner housing, 3—hemispherical intermediate housing, 4—hemispherical intermediate housing, 5—hemispherical outer housing, 6—hemispherical outer housing, 7—outer hatch cover press plate assembly, 71—outer hatch cover screw, 72—outer hatch cover press plate, 73—outer hatch cover mandrel assembly, 8—intermediate hatch cover press plate assembly, 81—intermediate hatch cover mandrel assembly, 82—intermediate hatch cover press plate, 83—intermediate hatch cover screw, 9—inner hatch cover press plate assembly, 91—inner hatch cover mandrel assembly, 92—inner hatch cover screw, 93—inner hatch cover press plate, 10—inner hatch cover hose connector assembly, 101—inner hatch cover hose connector, 102—inner hatch cover hose connector seal ring, 11—intermediate hatch cover hose connector assembly, 111—intermediate hatch cover hose connector, 112—intermediate hatch cover hose connector seal ring, 12—outer hatch cover hose connector assembly, 121—outer hatch cover hose connector, 122—outer hatch cover hose connector seal ring, 13—intermediate compartment hose and connector assembly, 131—intermediate compartment hose nut, 132—intermediate compartment hose seal ring, 133—intermediate compartment hose sealing bush, 134—intermediate compartment hose, 135—intermediate compartment hose sealing bush, 136—intermediate compartment hose seal ring, 137—intermediate compartment hose nut, 14—inner compartment hose and connector assembly, 141—inner compartment hose nut, 142—inner compartment hose seal ring, 143—inner compartment hose sealing bush, 144—inner compartment hose, 145—inner compartment hose sealing bush, 146—inner compartment hose seal ring, 147—inner compartment hose nut, 15—connecting shaft assembly, 151—spring damper, 152—slide bearing pedestal, 153—connecting shaft, 154—bearing press plate, 155—screw, 156—inner bearing bush, 157—slide bearing, 158—outer bearing bush, 16—connecting shaft assembly, 161—spring damper, 162—slide bearing pedestal, 163—connecting shaft, 164—bearing press plate, 165—screw, 166—inner bearing bush, 167—slide bearing, 168—outer bearing bush, 17—connecting shaft assembly, 171—spring damper, 172—slide bearing pedestal, 173—connecting shaft, 174—bearing press plate, 175—screw, 176—inner bearing bush, 177—slide bearing, 178—outer bearing bush, 18—connecting shaft assembly, 181—spring damper, 182—slide bearing pedestal, 183—connecting shaft, 184—bearing press plate, 185—screw, 186—inner bearing bush, 187—slide bearing, 188—outer bearing bush, 19—outer hatch cover assembly, 191—outer hatch cover seal ring, 192—outer hatch cover, 193—outer hatch cover connecting pin-shaft, 20—intermediate hatch cover assembly, 201—intermediate hatch cover seal ring, 202—intermediate hatch cover, 203—intermediate hatch cover connecting pin-shaft, 21—inner hatch cover assembly, 211—inner hatch cover seal ring, 212—inner hatch cover, 213—inner hatch cover connecting pin-shaft, 22—rotary limiting buffer, 221—upper support plate, 222—universal joint, 223—upper hydraulic damper, 224—universal joint, 225—middle support plate, 226—universal joint, 227—lower hydraulic damper, 228—universal joint, 229—lower support plate, 2210—upper support plate pedestal, 2211—lower support plate lower pedestal, 23—rotary limiting buffer, 231—upper support plate, 232—universal joint, 233—upper hydraulic damper, 234—universal joint, 235—middle support plate, 236—universal joint, 237—lower hydraulic damper, 238—universal joint, 239—lower support plate, 24—rotary limiting buffer, 241—upper support plate, 242—universal joint, 243—upper hydraulic damper, 244—universal joint, 245—middle support plate, 246—universal joint, 247—lower hydraulic damper, 248—universal joint, 249—lower support plate, 2410—upper support plate pedestal, 2411—lower support plate pedestal, 25—rotary limiting buffer, 251—upper support plate, 252—universal joint, 253—upper hydraulic damper, 254—universal joint, 255—middle support plate, 256—universal joint, 257—lower hydraulic damper, 258—universal joint, 259—lower support plate, 26—counterweight on the inner housing, 27—counterweight on the intermediate housing, and 28—counterweight on the outer housing.
The working principle, connection, and assembly of a self-balancing pressure hull device of the present invention is described in detail below with reference to
As shown in
The slide bearing 157 is fixed on a connecting shaft 153 via a bearing press plate 154 and a screw 155, and is supported by an slide bearing pedestal 152. The spring damper 151 is mounted on an outer side of the slide bearing pedestal 152, with two ends being tightly pressed against a protrusion.
In order to ensure that the three compartment doors of the spherical inner housing A1, the spherical intermediate housing B1 and the spherical outer housing C1 face upwards in the same directions under the balanced state of the spherical housings A1, B1, and C1, and to maintain a correct posture of the whole submersible, the following two measures are adopted: First, counterweights 26, 27, and 28 are placed on each of the bottoms of the housings A1, B1, and C1 (as shown in
During actual operation of the submersible, in order to prevent connecting pipelines and other accessories from being damaged due to relative rotation between the three housings A1, B1, and C1, it is required to limit relative rotation between each adjacent housings, and it is stipulated that an absolute value of a rotation angle between the adjacent housings is not greater than 15°. Moreover, it is required to buffer relative rotation between each adjacent housings.
To ensure sufficient space between each adjacent housings, it is stipulated that diameters D1, D2, and D3 of the spherical inner housing A1, the spherical intermediate housing B1, and the spherical outer housing C1 meet the following proportional relationship: 2:3:4, the diameter of the spherical inner housing A1 ranging from 2.2 m to 3.1 m. Withstanding a high pressure, the spherical intermediate housing B1 and the spherical outer housing C1 need to use a high-strength alloy material. The titanium alloy is recommended, where a thickness h2 of the spherical intermediate housing and a thickness h3 of the spherical outer housing are calculated according to the design depth of the submersible. Withstanding a low pressure, the spherical inner housing A1 may use common low-carbon alloy steel, where a thickness hi of the spherical inner housing is calculated according to the permissible stress of the material and a withstood air pressure.
As shown in
The inner hatch cover press plate 93 is connected to the hemispherical inner housing 1 via an inner hatch cover mandrel assembly 91 and tightly pressed by an inner hatch cover screw 92 in
In order to ensure that the three hatch covers 192, 202, and 212 can be opened and closed smoothly, it is stipulated that diameters L1, L2, and L3 of the inner hatch cover assembly 21, the intermediate hatch cover assembly 20, and the outer hatch cover assembly 19 meet the following proportional relationship: 1:1:2, the diameter of the inner hatch cover assembly 21 ranging from 0.7 m to 1.1 m.
As shown in
As shown in
An assembly process of the present invention is as follows:
(1) Housings in Three Layers
A housing member in each layer is a hemispherical structure, and two hemispherical housings are connected via bolts or welded (a welding manner is used as an example in this embodiment) to form a complete spherical housing. During actual assembly of the housings in three layers, an inner hatch cover assembly 21 and other large-sized apparatuses are placed between the two hemispherical housings 1 and 2 of a spherical inner housing A1, and then the two hemispherical inner housings 1 and 2 of the spherical inner housing A1 are connected and welded to form a complete spherical inner housing A1.
Two connecting shafts 173 and 183 are symmetrically welded at two ends of the spherical inner housing A1, and then, slide bearings 177 and 187 smeared with lubricating grease are mounted on the two connecting shafts 173 and 183 respectively. Bearing press plates 174 and 184 are closed, and screws 175 and 185 are screwed into the bearing press plates 173 and 183. Slide bearing pedestals 172 and 182 are welded on inner walls of two hemispherical intermediate housings 3 and 4 of a spherical intermediate housing B1 respectively, and spring dampers 171 and 181 are mounted on outer sides of the slide bearing pedestals 172 and 182 respectively. Middle support plates 225 and 235 of rotary limiting buffers 22 and 23 between the spherical inner housing A1 and the spherical intermediate housing B1 are symmetrically welded on an outer wall of the spherical inner housing A1. Then, in each rotary limiting buffer 22 (or 23), one end of each of two hydraulic dampers 223, and 227 (or 233, and 237) with universal joints 222, 224, 226, and 228 (or 232, 234, 236, and 238) are welded to a corresponding middle support plate 225 (or 235), where the two ends are symmetrically arranged at two sides of the middle support plate 225 (or 235); and the other end is welded at one side of a corresponding upper support plate 221 (or 231) or lower support plate 229 (or 239). Two symmetrical semi-pedestals of upper support plate pedestal 2210 and lower support plate pedestal 2211 of the hydraulic dampers 223, and 227 (or 233, and 237) for connecting the spherical inner housing A1 and the spherical intermediate housing B1 are welded on rims of corresponding hemispherical intermediate housings 3 and 4 respectively. The two hemispherical intermediate housings 3 and 4 of the spherical intermediate housing B1 that carry upper support plate pedestal 2210 and lower support plate pedestal 2211 of the hydraulic dampers 223, and 227 (or 233, and 237), the slide bearing pedestals 172 and 182, and the spring dampers 171 and 181 are assembled at two sides of the spherical inner housing A1 with the intermediate connecting shafts 173 and 183. The intermediate connecting shafts 173 and 183 are made to be reliably fitted into inner holes of the slide bearing pedestals 172 and 182 via slide bearings 177 and 187 and a bearing bush assembly (inner bearing bush 176 and outer bearing bush 178, and inner bearing bush 186 and outer bearing bush 188). The upper support plate 221 (or 231) and lower support plate 229 (or 239) of the hydraulic dampers 223, and 227 (or 233, and 237) are clamped in two corresponding semi-pedestals respectively, and then the two hemispherical intermediate housings 3 and 4 of the spherical intermediate housing B1 are welded to form a complete spherical intermediate housing B1.
Two connecting shafts 153 and 163 are symmetrically welded at two ends of the spherical intermediate housing B1, and then, slide bearings 157 and 167 smeared with lubricating grease are mounted on the two connecting shafts 153 and 163 respectively. Bearing press plates 154 and 164 are closed, and screws 155 and 165 are screwed into the bearing press plates 154 and 164. Slide bearing pedestals 152 and 162 are welded on inner walls of two hemispherical outer housing 5 and 6 of a spherical outer housing C1 respectively, and spring dampers 151 and 161 are mounted on outer sides of the slide bearing pedestals 152 and 162 respectively. Middle support plates 245 and 255 of rotary limiting buffers 24 and 25 between the spherical intermediate housing B1 and the spherical outer housing C1 are symmetrically welded on an outer wall of the spherical intermediate housing B1. Then, in each rotary limiting buffer 24 (or 25), one end of each of two hydraulic dampers 243 and 247 (or 253 and 257) with universal joints 242, 244, 246, and 248 (or 242, 244, 246, and 248) is welded to a corresponding middle support plate 245 (or 255), where the two ends are symmetrically arranged at two sides of the middle support plate 245 (or 255); and the other end is welded at one side of a corresponding upper support plate 241 (or 251) or lower support plate 249 (or 259). Two symmetrical semi-pedestals of upper support plate pedestal 2410 and lower support plate pedestals 2411 of the hydraulic dampers 243 and 247 (or 253 and 257) for connecting the spherical intermediate housing B1 and the spherical outer housing C1 are welded on rims of corresponding hemispherical outer housings 5 and 6 respectively. The two hemispherical outer housing 5 and 6 of the spherical outer housing C1 that carry upper support plate pedestal 2410 and lower support plate pedestal 2411 of the hydraulic dampers 243 and 247 (or 253 and 257), the slide bearing pedestals 152 and 162, and the spring dampers 151 and 161 are assembled at two sides of the spherical intermediate housing B1 with the connecting shafts 153 and 163. The connecting shafts 153 and 163 are made to be reliably fitted into inner holes of the slide bearing pedestals 152 and 162 via slide bearings 157 and 167 and a bearing bush assembly (inner bearing bush 156 and outer bearing bush 158, and inner bearing bush 166 and outer bearing bush 168). The upper support plate 241 (or 251) and lower support plates 249 (or 259) of the hydraulic dampers 243 and 247 (or 253 and 257) are clamped in two corresponding semi-pedestals respectively, and then the two hemispherical outer housings 5 and 6 of the spherical outer housing C1 are welded to form a complete spherical outer housing C1.
(2) Hatch Covers in Three Layers
During actual assembly of hatch covers 212, 202, and 192 in inner, middle and outer layers and corresponding hatch cover press plate assemblies 9, 8, and 7, hatch cover seal rings 211, 201, and 191 of the three hatch covers 212, 202, and 192 are first mounted. The inner hatch cover 212 that has been placed into the inner compartment is mounted on the spherical inner housing A1 via an inner hatch cover connecting pin-shaft assembly 213. An inner hatch cover press plate 93 is mounted on an inner hatch cover mandrel assembly 91 of the inner hatch cover press plate 93, and then the shaft ends are clamped via retainer rings. After the inner hatch cover 212 is closed, an inner hatch cover screw 92 is screwed into the inner hatch cover press plate 93. The intermediate hatch cover 202 is mounted on the spherical intermediate housing B1 via an intermediate hatch cover connecting pin-shaft assembly 203. An intermediate hatch cover press plate 82 is mounted on an intermediate hatch cover mandrel assembly 81 of the intermediate hatch cover press plate 82, and then the shaft ends are clamped via retainer rings. After the intermediate hatch cover 202 is closed, an intermediate hatch cover screw 83 is screwed into the intermediate hatch cover press plates 82. The outer hatch cover 192 is mounted on the spherical outer housing C1 via an outer hatch cover connecting pin-shaft assembly 193. An outer hatch cover press plate 72 is mounted on an outer hatch cover mandrel assembly 73 of the outer hatch cover press plate 72, and then shaft ends are clamped via retainer rings. After the outer hatch cover 192 is closed, an outer hatch cover screw 71 is screwed into the outer hatch cover press plates 72.
(3) Pipelines in Three Layers
During actual assembly of gas filling and exhaust pipelines and corresponding connectors, seal rings of hatch cover hose connectors in the three layers are mounted on corresponding hose connectors. The inner hatch cover hose connector 101, the intermediate hatch cover hose connector 111 and the outer hatch cover hose connector 121 are respectively mounted on the corresponding inner hatch cover 212, intermediate hatch cover 202 and outer hatch cover 192, and are screwed. The inner compartment hose and connector assembly 14 runs through the intermediate compartment hose and connector assembly 13 and the intermediate hatch cover hose connector 111. Two connectors of the inner compartment hose 144 are respectively screwed onto the inner hatch cover hose connector 101 and the outer hatch cover hose connector 121. Two connectors of the intermediate compartment hose 134 are respectively screwed onto the intermediate hatch cover hose connector 111 and the outer hatch cover hose connector 121.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2015 1 0586853 | Sep 2015 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/094256 | 8/9/2016 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2017/045494 | 3/23/2017 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5477798 | Ness | Dec 1995 | A |
| 7131389 | Hawkes | Nov 2006 | B1 |
| Number | Date | Country |
|---|---|---|
| 102556305 | Jul 2012 | CN |
| 103241353 | Aug 2013 | CN |
| 203623913 | Jun 2014 | CN |
| 102005047805 | Apr 2006 | DE |
| 2137659 | Sep 1999 | RU |
| Entry |
|---|
| “International Search Report (Form PCT/ISA/210)”, dated Oct. 25, 2016, with English translation thereof, pp. 1-4. |
| Number | Date | Country | |
|---|---|---|---|
| 20180237108 A1 | Aug 2018 | US |
