Patent Application
20150233477
One kind of turned ball valve technology.
The present invention relates to a turned ball valve.
Existing regulating valves typically include a body, a stem, a ball and a seat. The seat has a round hole fluid channel, whereas the ball contains a V-bore control port. The ball and the stem are mechanical fixed together wherein the ball and the seat functions as sealing elements. The ball and seat forms a ball surface match,. The ball could rotate within the body up to 90 degrees using the stem as an axis. During the rotating process, the V-bore control port on the ball and the seat configure into a opening with different opening degrees, whereas a flowing volume may be adjusted.
Shortcomings of the existing valves include: in the adjusting process, the opening configured by the ball and the seat may form irregular shapes, thus the adjusting process does not impose an accurate character; under working condition with a high pressure differential, a ball port on the ball and a seat port on the seat are frequently eroded by fluid mediums which have high flowing rates under the high pressure differentials, leading to larger sputtering surfaces and sputtering volumes. The existing regulating valves are not appreciated for regulations under the high pressure differential.
The object of the present invention is to provide a turned regulating ball valve, said turned regulating ball valve may overcome existing valves' shortcomings including inaccurate characters due to irregular-shaped openings during adjusting processes, and frequent erosions to ball ports and seat ports under high pressure differentials.
In one embodiment, the present invention achieve the following technical solutions: a turned regulating ball valve, which includes a ball valve body, a ball and a stem fixed to the ball. The ball may rotate within the ball valve body up to 90 degrees using the stem as an axis. A first side and a second side of the ball valve body each is provided with an inlet seat and an outlet seat respectively; an inlet fluid passage is provided to said ball valve body and the inlet seat; an outlet fluid passage is provided to said ball valve body and the outlet seat. The ball is located between the inlet seat and the outlet seat. A control assembly is provided to a first part of the ball close to the inlet seat; a plurality of hole fluid channels is provided to a second part of the ball close to the outlet seat and connected to the control assembly.
In a yet preferred embodiment, said control assembly on the ball is provided with a ball fluid bore. Said control assembly includes a plurality of layers of component discs, said component discs are provided with a plurality of multi-level angle turn flow channels, said multi-level angle turn flow channels are connected to the hole fluid channels.
In an even preferred embodiment, the control assembly, the ball fluid bore, the inlet fluid passage, the outlet fluid passage and hole fluid channels and their combinations all have square-shaped cross-sections.
In yet another embodiment, the ball valve body includes a main body and an auxiliary body, sealing elements are provided to connecting sections in between the main ball valve body, the auxiliary body, the inlet seat, the outlet seat and/or the stem.
The present invention has the advantages including:
1. during the adjusting process, the ball and the inlet seat form the ball fluid bore with the square-shaped cross-sections, which increases the flowing volume of fluid mediums at an entrance port of the ball;
2. during the adjusting process, the fluid medium's flow rate may be precisely regulated by adjusting rotating degrees of the ball, which leads to an accurate adjustment.
3. the fluid medium passes through the plurality of the multi-level angled turn fluid channel on the layers of component discs, wherein said fluid medium is diverted and depressurized at each turn of said multi-level angled turn fluid channel, which is appreciated for regulating requirements under high pressure differentials.
The invention is further described in detail in following drawings:
Said embodiment is characterized by: the ball 1 is placed in between the inlet seat 3 and the outlet seat 4; a control assembly is located on a first part of the ball 1 which is adjacent to the inlet seat 3; a plurality of hole fluid channels 7 are located on a second part of the ball 1 adjacent to the outlet seat 4, and connected to the control assembly. The ball fluid bore 8 is located on a front end of the control assembly of the ball 1, whereas said front end is adjacent to the inlet seat 3. Said control assembly consists of a plurality of layers of component discs 9, each of said component discs 9 is evenly provided with a plurality of multi-level angled turn fluid channels 10, which are connected with the hole fluid channel 7.
Preferably, said control assembly, the ball fluid bore 8 and the hole fluid channel 7 all have square-shaped cross-sections.
Said ball valve body includes a main body 11 and a auxiliary body 12. Sealing elements 13 are provided to connecting sections in between the main body 11, the auxiliary body 12, the inlet seat, the outlet seat 4 and/or the stem 2.
Yet another embodiment of the present invention provides a turned regulating ball valve, wherein the ball 1 is provide with the ball fluid bore 8 and the hole fluid channels 7, the control assembly is located and incorporated in the ball fluid bore 8; the inlet seat 3 is provided with the inlet fluid passage 5, which is connected to the ball fluid bore 8 in the ball 1; the outlet seat 4 is provided with the outlet fluid passage 6, which is connected to the hole fluid channels 7 in the ball 1; the control assembly is formed by multiplying the layers of the component discs 9, each of the component discs 9 is provided with the multi-level angled turn fluid channels 10; said multi-level angled turn fluid channels 10 has a inlet end which may be communicated to the ball fluid bore 8, and an outlet end which may be communicated to the hole fluid channels 7, respectively. For example, said multi-level angled turn fluid channels may be completely connected to, partially connected to, or completely disconnected to the ball fluid bore 8 and the hole fluid channels 7 by rotating the ball 1 at different degrees.
In one embodiment, the cross-sections of the control assembly, the ball fluid bore 8, the inlet fluid passage 5, the outlet fluid passage 6 and the hole fluid channel 7 are square-shaped, which may allow accurate adjustments when rotating the stem 2. Said cross-sections may also form other shapes that allow the accurate adjustments.
Therefore, as a fluid medium pass through the multi-level angled turn fluid channels 10 which contains a plurality of turns along said channels, its energy is consumed when passing each turn of said channel, which results in decrease of its flow rate, its speed and its pressure, and lead to significant reduction of high speed due to the fluid medium under the high pressure differential.
In one embodiment, the ball 1 may rotate in the ball valve body using the stem 2 as the axis. During the rotation process, the ball fluid bore 8 in the ball 1 and the inlet fluid passage 5 in the inlet seat 3 form a first square-shaped flow passage area, which may lead to an increased inlet flow volume. The first square-shaped flow passage area is adjacent to an entrance of the ball, thus increases the flowing volume of the fluid medium at said entrance. The hole fluid channels 7 in the ball 1 and the outlet fluid passage 6 in the out seat 4 form a second square-shaped flow passage area.
It is to be understood that the use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items; the terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item; and, the use of terms “first”, “second”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
It is to be understood that the above embodiments and examples are provided as illustrations only, and do not in any way restrict or define the scope of the present invention. Various other embodiments may also be within the scope of the claims.
