Patent Application
20200096266
The present application claims priority from Chinese application No. 2019107585911 filed on Aug. 16, 2019 which is hereby incorporated by reference in its entirety.
The present invention relates to the technical field of condenser descaling and cleaning, in particular to a descaling and cleaning equipment for condenser of the power plant.
Condenser is a large-scale heat exchange equipment. In the power industry, its role is to condense the steam discharged from the work of the turbine into water to improve the efficiency of the thermal cycle. During this work, due to the unclean cooling water quality, heat exchange Chemical reactions and other causes occur, which cause the accumulation of dirt that is not conducive to heat transfer on the inner wall of the copper tube. The presence of dirt reduces the heat transfer capacity of the heat exchange surface and reduces the efficiency of the steam turbine. Currently, offline cleaning equipment mainly uses mechanical methods , Brush), high pressure water, chemical cleaning and other methods to clean the condenser, but because the condenser pipe is relatively slender, traditional cleaning equipment cannot directly clean the inner wall of the pipe, making it impossible to completely remove scales and other deposits, reducing Equipment life, the present invention illustrates a device capable of solving the above problems.
Technical problem: At present, offline condenser cleaning equipment cannot directly clean the inner wall of the pipeline, which makes it impossible to completely remove deposits such as scale and reduce the service life of the condenser.
In order to solve the above problems, a power plant condenser descaling and cleaning device is designed in this example. A power plant condenser descaling and cleaning device in this example includes a vehicle body, and a power chamber is provided in the vehicle body. A turntable is provided on the left side of the car body, a turntable cavity is provided in the turntable, and a telescopic device is provided in the turntable cavity, and the telescopic device can be connected to the left inner wall of the turntable cavity by rotation and extends to the right A motor shaft, a splined keyboard fixedly connected to the motor shaft, a main gear provided on the right side of the splined keyboard, a spline cavity provided in the main gear and connectable to the splined keyboard, Two cavities provided in the main gear and located on the left and right sides of the spline cavity, with the cavity openings facing away from the side of the spline cavity, and six circular arrays are distributed on the main A fixed shaft on the left end face of the gear, a sleeve with a sliding key connected to the fixed shaft, a link rotationally connected to the sleeve, a slide rod hinged on the link, and using the rotating shaft Driving the main gear to rotate, thereby driving the connecting rod and the slide rod to rotate To achieve telescopic movement, a descaling device for driving the telescopic device to realize descaling movement is provided in the turntable cavity, and a walking device capable of adapting to the inner wall of the pipeline is provided in the power cavity. The walking device is fixed to realize a locking device stored in the walking device, and a cleaning device for cleaning the pipeline is provided on the right end face of the power chamber.
Wherein, the telescopic device includes six hydraulic cylinders distributed on the left inner wall of the turntable cavity. The hydraulic cylinder is provided with a hydraulic cavity, and a sliding plug is slidably connected in the hydraulic cavity. A sliding rod is fixedly connected to the end surface of the plug near the symmetrical center, and the sliding rod extends into the turntable cavity toward the symmetrical center side, and the sliding rod is hinged with the connecting rod, and the hydraulic cylinder The end face on the side far from the center of symmetry is fixedly connected to the auxiliary hydraulic cylinder. The auxiliary hydraulic cylinder is provided with a auxiliary hydraulic chamber communicating with the hydraulic chamber. A return pipe is connected between the auxiliary hydraulic chamber and the hydraulic chamber. A secondary slide is slidably connected in the secondary hydraulic chamber. The secondary slide is fixedly connected to a push rod on the end surface away from the center of symmetry, and the push rod extends to the end of the secondary hydraulic chamber toward the side remote from the center of symmetry. In addition, a scraper located outside the end surface of the turntable cavity is fixedly connected to the push rod, a motor fixedly connected to the left inner wall of the turntable cavity is dynamically connected to the motor shaft, and a fixed shaft is connected to the motor shaft. Located on the main gear Electromagnet side.
Preferably, the inner diameter of the hydraulic chamber is larger than that of the auxiliary hydraulic chamber, so that the displacement amount generated by the sliding plug driving the auxiliary sliding block by the hydraulic oil is the displacement amount of the sliding plug itself.
Wherein, the descaling device includes a water turbine fixedly connected to the left inner wall of the power chamber, the water turbine is connected to external water supply equipment, and a rotating shaft extending to the left of the turntable cavity is rotatably connected in the water turbine. A spline wheel located in the cavity of the turntable is fixedly connected to the rotating shaft, the spline wheel can be splined to the spline cavity, and the inner wall of the right side of the turntable cavity is fixedly connected to the spline wheel; Ring gear connected to the main gear.
Preferably, a tension spring is connected between the main gear and the right inner wall of the turntable cavity.
Wherein, the walking device includes three piston cylinders distributed in a circular array on the right inner wall of the power chamber, and the piston cylinder extends to the side far from the center of symmetry to the outside of the end face of the power chamber. The piston cylinder A piston chamber is provided therein, and a connecting pipe is connected between the piston chamber and the hydraulic turbine. A piston is slidably connected in the piston chamber. A piston rod is fixedly connected to an end of the piston away from the center of symmetry. The spray head extends to the side away from the center of symmetry to the outside of the end face of the piston cavity. The piston rod is fixedly connected with a sub-turbine located outside the end face of the piston cavity. The auxiliary water turbine communicates with the water delivery hole, a fixed plate is fixedly connected to the end surface of the piston rod, a reducer is fixedly connected to the upper end surface of the fixed plate, and the auxiliary hydraulic turbine is rotatably connected to extend into the reducer. A speed reduction shaft, and the speed reduction shaft can drive the speed reducer, a wheel shaft extending outside the end face of the speed reducer is rotatably connected in the speed reducer, and the wheel shaft is fixedly connected with a shaft for Take the wheel.
Preferably, a secondary tensile spring is connected between the piston and an inner wall of the piston cavity near the center of symmetry.
Wherein, the locking device includes an L-shaped rod fixedly connected to the right end surface of the piston rod and located outside the end surface of the power cavity, the L-shaped rod is provided with pin holes penetrating left and right, and the piston cylinder is right A sliding table located outside the end surface of the power cavity is fixedly connected to the side end surface, and a slider is slidingly connected to an end surface of the sliding table facing away from the center of symmetry. A secondary electromagnet on the right side of the slider, a compression spring is connected between the slider and the secondary electromagnet, and a latch pin that can contact the pin hole is fixedly connected to the left end surface of the slider.
Wherein, the cleaning device includes a fixing ring fixedly connected to the right end surface of the power cavity, and a ring tube is fixedly connected to the right end surface of the fixed ring, and the ring tube is arranged in a circular array on the end surface away from the center of symmetry. There are sixteen nozzles in communication with the annular pipe, and a water conveyance pipe is connected between the annular pipe and the auxiliary water turbine.
The beneficial effect of the present invention is that the present invention is a pipeline robot. The telescopic movement mechanism can automatically extend under the drive of water flow, so that the walking wheel can automatically contact the inner wall of the pipeline, and the descaling mechanism can realize the scraper under the drive of the motor. Automatic expansion and contraction, so as to automatically adapt to the inner diameter of the pipeline, and at the same time, the turbine in the equipment is rotated by external water supply to drive the blade to rotate to achieve the descaling of the inner wall of the pipeline. Thus, walking along the inner wall of the pipeline is achieved, and then the water stream is sprayed through the water spraying mechanism, spray-washes the pipeline after descaling, and flushes the dirt in the pipeline to the outside, thereby realizing the cleaning of the interior of the pipeline. It can clean and descale the inner wall of the condenser pipe, effectively improve the descaling effect of the condenser pipe, and increase the service life of the condenser. At the same time, it can adapt to different pipe diameters through the telescopic mechanism, and has a wide application range.
For ease of description, the present invention is described in detail by the following specific embodiments and the accompanying drawings.
The present invention is described in detail below with reference to
The invention relates to a descaling and cleaning device for condensers of a power plant, which is mainly used for descaling and cleaning of condensers. The invention will be further described below with reference to the accompanying drawings of the invention:
A descaling and cleaning device for a condenser of a power plant according to the present invention includes a car body 11 having a power chamber 12 therein, and a turntable 31 on the left side of the car body 11, and the turntable 31 A turntable cavity 32 is provided therein. The turntable cavity 32 is provided with a telescopic device 101 therein. The telescopic device 101 can be connected to the left side inner wall of the turntable cavity 32 by rotation and a motor shaft 38 extending to the right. A splined keyboard 44 on the motor shaft 38, a main gear 36 provided on the right side of the splined keyboard 44, a spline cavity 62 provided in the main gear 36 and splined to the splined keyboard 44, Two cavities 43 disposed in the main gear 36 and located on the left and right sides of the spline cavity 62, and the openings of the cavities 43 face away from the spline cavity 62, and six annular arrays A fixed shaft 55 distributed on the left end face of the main gear 36, a sleeve 54 connected to the fixed shaft 55 by a sliding key, a connecting rod 53 rotatably connected to the sleeve 54, and hinged to the connection The slide bar 52 on the lever 53 is used to drive the main gear 36 to rotate by using the rotating shaft 40, thereby driving the link 53 and the slide bar 52 to rotate To achieve telescopic movement, a descaling device 102 for driving the telescopic device 101 to realize the descaling movement is provided in the turntable cavity 32, and a walking device 103 capable of adapting to the inner wall of the pipeline is provided in the power cavity 12 for walking. The device 103 is provided with a locking device 104 for fixing the walking device 103 so as to realize the storage of the walking device 103, and a cleaning device 105 for cleaning pipes is provided on the right end face of the power chamber 12.
According to an embodiment, the telescopic device 101 is described in detail below. The telescopic device 101 includes six hydraulic cylinders 35 distributed in a circular array on the left inner wall of the turntable cavity 32, and the hydraulic cylinder 35 is provided with a hydraulic cavity. 48. A sliding plug 51 is slidably connected in the hydraulic chamber 48. A sliding rod 52 is fixedly connected to an end surface of the sliding plug 51 near the center of symmetry and symmetry, and the sliding rod 52 extends to the side near the center of symmetry to the In the turntable cavity 32, the sliding rod 52 is hinged with the connecting rod 53, the hydraulic cylinder 35 is fixedly connected to the auxiliary hydraulic cylinder 33 on the end surface away from the center of symmetry, and the auxiliary hydraulic cylinder 33 is provided with A secondary hydraulic chamber 49 communicating with the hydraulic chamber 48, a return pipe 34 is connected between the secondary hydraulic chamber 49 and the hydraulic chamber 48, and a secondary slide plug 50 is slidably connected in the secondary hydraulic chamber 49. The auxiliary slider 50 is fixedly connected to the push rod 30 on the end surface away from the center of symmetry, and the push rod 30 extends to the side away from the symmetrical center to the end face of the auxiliary hydraulic cavity 49. The push rod 30 is fixedly connected to The scraper 29 outside the end surface of the turntable cavity 32 is connected to the motor shaft 38 by power. A motor 37 is fixedly connected to the left inner wall of the turntable cavity 32, and an electromagnet 39 on the left side of the main gear 36 is fixedly connected to the motor shaft 38. The motor shaft 38 is driven by the motor 37 Rotation can drive the main gear 36 to rotate, so that the auxiliary slider 50 can be driven to move up and down, thereby achieving telescopic movement.
Beneficially, the inner diameter of the hydraulic chamber 48 is larger than the auxiliary hydraulic chamber 49, so that the displacement amount generated by the sliding plug 51 driving the auxiliary sliding plug 50 by hydraulic oil is the displacement amount of the sliding plug 51 itself.
According to the embodiment, the descaling device 102 will be described in detail below. The descaling device 102 includes a water turbine 14 fixedly connected to the left inner wall of the power chamber 12, and the water turbine 14 is connected to an external water supply device. A rotating shaft 40 extending to the left in the turntable cavity 32 is rotatably connected to the water turbine 14. A spline wheel 42 located in the turntable cavity 32 is fixedly connected to the rotating shaft 40. The spline cavity 62 is splined, and an inner ring gear 45 that can be meshed with the main gear 36 is fixedly connected to the inner wall on the right side of the turntable cavity 32. The external water supply device drives the water turbine 14 to make the rotating shaft 40 is splined to the main gear 36 by a spline wheel 42 and drives the turntable 31 to rotate through the meshing connection between the ring gear 45 and the main gear 36, thereby achieving rotation scraping of the inner wall of the pipe Dirt function.
Beneficially, a tension spring 41 is connected between the main gear 36 and the right inner wall of the turntable cavity 32.
According to the embodiment, the walking device 103 will be described in detail below. The walking device 103 includes three piston cylinders 16 distributed in an annular array on the right inner wall of the power chamber 12, and the piston cylinders 16 are far away from the center of symmetry. One side extends beyond the end face of the power chamber 12, a piston chamber 17 is provided in the piston cylinder 16, a connecting pipe 13 is connected between the piston chamber 17 and the water turbine 14, and the piston chamber 17 slides inside A piston 64 is connected, a piston rod 24 is fixedly connected to an end surface of the piston 64 away from the center of symmetry, and the spray head 25 extends to the side far from the center of symmetry to the outside of the end face of the piston cavity 17 on the piston rod 24. A sub-turbine 21 located outside the end surface of the piston chamber 17 is fixedly connected, and a water delivery hole 65 is provided in the piston rod 24 to communicate the piston cavity 17 with the sub-turbine 21. A fixed plate 22 is fixedly connected, and a reducer 19 is fixedly connected to an upper end surface of the fixed plate 22. A reduction shaft 46 extending to the reducer 19 is rotatably connected to the auxiliary hydraulic turbine 21, and the reduction shaft 1946 can drive the reducer 19 to move, A wheel shaft 20 extending outside the end face of the speed reducer 19 is rotatably connected in the speed reducer 19, and a wheel 18 for walking is fixedly connected to the wheel shaft 20, and the water flow in the water turbine 14 passes through the connecting pipe. 13 is conveyed into the piston cavity 17 and pushes the piston 64 and the piston rod 24 to move away from the center of symmetry, so that the wheel 18 is in contact with the fixed inner wall, thereby automatically adapting to the inner diameter of the pipe.
Beneficially, a secondary tension spring 28 is connected between the piston 64 and the inner wall of the piston cavity 17 near the center of symmetry.
According to an embodiment, the locking device 104 is described in detail below. The locking device 104 includes an L-shaped rod 61 fixedly connected to the right end surface of the piston rod 24 and located outside the end surface of the power chamber 12. The rod 61 is provided with pin holes 63 penetrating from left to right, and a sliding table 56 located outside the end surface of the power chamber 12 is fixedly connected to the right end surface of the piston cylinder 16. The sliding table 56 slides on the end surface away from the center of symmetry. A slider 57 is connected, and a side surface of the slide table 56 away from the center of symmetry is fixedly connected with a secondary electromagnet 59 on the right side of the slider 57, and a connection is made between the slider 57 and the secondary electromagnet 59. A compression spring 58 is fixedly connected with a bolt 60 that can abut against the pin hole 63 on the left end surface of the slider 57, and the piston rod 24 is restricted from moving up and down by the abutment of the bolt 60 with the pin hole 63. Thus, the accommodating function of the piston rod 24 is realized.
According to the embodiment, the cleaning device 105 is described in detail below. The cleaning device 105 includes a fixing ring 27 fixedly connected to the right end face of the power chamber 12, and a ring shape is fixedly connected to the right end face of the fixing ring 27. There are sixteen nozzles 25 connected to the annular tube 26 in an annular array on the end surface of the annular tube 26 away from the center of symmetry. The annular tube 26 and the auxiliary hydraulic turbine 21 are connected to each other. The water conveyance pipe 23, the sub-turbine 21 conveys the water flow into the annular pipe 26 through the water conveyance pipe 23, and sprays out through the nozzle 25, thereby achieving the function of cleaning the inner wall of the pipeline.
The following describes in detail the use steps of a descaling and cleaning device for a condenser of a power plant in this article with reference to
At the beginning, the electromagnet 39 is energized to attract the main gear 36, so that the spline cavity 62 is splined to the spline keyboard 44, the cavity 43 is disconnected from the spline cavity 62, and the slider 51 and the secondary slider 50 are located on the side near the center of symmetry At the limit position, the auxiliary electromagnet 59 is powered to attract the slider 57 so that the bolt 60 is disengaged from the pin hole 63. Under the elastic force of the auxiliary tension spring 28, the piston 64 is located at the limit near the center of symmetry. The equipment is placed in the pipes of the condenser.
During operation, the external water supply equipment sends water flow to the water turbine 14 through the water pipe 15, so that the water turbine 14 drives the rotating shaft 40 to rotate, and then the water flow in the water turbine 14 is conveyed into the piston cavity 17 through the connecting pipe 13, and part of the water flow pushes the piston 64 to be symmetrical away from The center side moves so that the wheel 18 abuts the inner wall of the pipe. At the same time, the motor 37 is started. The motor 37 drives the motor shaft 38 to rotate. The motor shaft 38 drives the main gear 36 through the spline connection of the spline keyboard 44 and the spline cavity 62, so that The main gear 36 drives the connecting rod 53 to rotate through the sliding key connection of the fixed shaft 55 and the sleeve 54. The connecting rod 53 drives the slider 51 to move away from the center of symmetry through the slider 52, and pushes the auxiliary slider 50 and The push rod 30 moves to the side far from the center of symmetry, so that the scraper 29 abuts against the inner wall of the pipe, and then the motor 37 stops and the electromagnet 39 loses power. Under the action of the spring force of the tension spring 41, the main gear 36 moves to the right, so that The spline cavity 62 is disconnected from the spline keyboard 44. The spline cavity 62 is splined with the spline wheel 42. At the same time, the main gear 36 is meshed with the ring gear 45. The shaft 40 is connected to the spline of the spline cavity 62 through the cavity 43. Connection The main gear 36 rotates, and the main gear 36 rotates the ring gear 45 and the turntable 31 through the meshing connection, thereby driving the scraper 29 to rotate and remove dirt on the fixed inner wall. At the same time, the water flow in the piston chamber 17 drives the auxiliary turbine 21 through the water delivery hole 65 And the deceleration shaft 46 rotate, and after decelerating through the decelerator 19, the wheel shaft 20 and the wheel 18 are rotated, thereby driving the equipment to move along the inner wall of the pipeline, and then the water flow in the auxiliary water turbine 21 is transported to the annular pipe 26 through the water conveying pipe 23, and The nozzle 25 sprays the inner wall of the cleaning pipe. After the cleaning of the pipe is completed, the motor 37 reverses so that the push rod 30 and the scraper 29 move to the side close to the center of symmetry. After that, the motor 37 stops and manually pushes the wheels 18 and the piston 64 to the direction. Moving near the center of symmetry, the power loss of the auxiliary electromagnet 59 causes the slider 57 to move to the left, and the pin 60 abuts with the pin hole 63, restricting the piston chamber 17 to move up and down, thereby achieving the expansion and contraction of the device and convenient storage.
The beneficial effect of the present invention is that the present invention is a pipeline robot. The telescopic movement mechanism can automatically extend under the drive of water flow, so that the walking wheel can automatically contact the inner wall of the pipeline, and the descaling mechanism can realize the scraper under the drive of the motor. Automatic expansion and contraction, so as to automatically adapt to the inner diameter of the pipeline, and at the same time, the turbine in the equipment is rotated by external water supply to drive the blade to rotate to achieve the descaling of the inner wall of the pipeline. Thus, walking along the inner wall of the pipeline is achieved, and then the water stream is sprayed through the water spraying mechanism, spray-washes the pipeline after descaling, and flushes the dirt in the pipeline to the outside, thereby realizing the cleaning of the interior of the pipeline. It can clean and descale the inner wall of the condenser pipe, effectively improve the descaling effect of the condenser pipe, and increase the service life of the condenser. At the same time, it can adapt to different pipe diameters through the telescopic mechanism, and has a wide application range.
In the above manner, those skilled in the art can make various changes according to the working mode within the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019107585911 | Aug 2019 | CN | national |
