KR20100002165U - A self-balancing type self-compensation sealed valve - Google Patents

Abstract

’자형 구멍(15)은 서로 대응된다.The present invention is a self-balancing self-compensating sealed spherical valve, comprising a valve body 5 and a valve cover 7 and a central portion 6 of a spherical valve mounted in the valve body 5. . The valve body 5 and the valve cover 7 are provided with a symmetrical balanced steel 14 in communication with the valve inlet, and within the balanced steel 14 and the valve center 6. 'S

'The holes 15 correspond to each other.

Between the valve center 6 and the valve body 5 is equipped with a sealing piston 9 of an automatic compensation type, a spherical valve of this kind can be used to control the communication and shut off of the pressure fluid.

Spherical Valve, Balanced, Automatic Compensation, Spherical, Balanced Steel

Description

Self-balancing Automatic Compensation Sealed Spherical Valves {A SELF-BALANCING TYPE SELF-COMPENSATION SEALED VALVE}

The present invention relates to a spherical valve of a large diameter passage used in the medium pressure or high pressure region.

Each type of spherical valves currently in use is designed so that the inlet and outlet are all in direct communication with the valve cavity of the valve body, while the pressure fluid acts directly on the center of the spherical valve, rotating at 90 degrees. It must be opened and closed. In the case of opening or closing a spherical valve with a relatively high pressure and a relatively large diameter, a large force pushes the spherical valve center in the direction of the valve seat or drive shaft due to the action of the fluid pressure, which is why the steering rotation moment Becomes very large, further accelerating the breaking speed of the sealing portion under the action of frictional force. The above causes are the main factors affecting the high pressure spherical valve of the large diameter passage.

It is an object of the present invention to provide a self-balancing self-compensating sealed spherical valve which provides controlled pressure fluid through the balance steel to act simultaneously and symmetrically on both sides of the spherical valve core. This is to achieve self equilibrium. At the same time, an automatic compensating sealing method for the center of the old valve realizes a light and convenient opening and closing operation of the old valve, and fully designs a new old valve with a much higher pressure and a much larger diameter than the old valve. It is for manufacturing.

’자형 구멍과 서로 대응하고, 상기 구형 밸브 중심부와 상기 밸브 몸체 사이에는 자동 보상 밀봉 피스톤이 장착된다.The present invention is a self-balancing self-compensating sealed spherical valve, comprising a valve body, a valve cover and a spherical valve center mounted in the valve body, and a symmetrical balanced steel in communication with the valve inlet in the valve body and the valve cover. The balance steel is in the center of the spherical valve

'Corresponds to each other with a shaped hole, an automatic compensation sealing piston is mounted between the spherical valve center and the valve body.

The self-balancing self-compensating sealed spherical valve is mounted with a back pressure spring to be symmetrical in the balance steel, the back pressure spring being positioned over the self-compensating sealing piston.

’자형 구멍의 세 번째 끝이 고리 모양의 평형강을 통과하여 밸브 출구와 서로 통하도록 마련된다.The self-balancing automatic compensation sealed spherical valve, said '

'The third end of the bore is arranged to pass through the annular balanced steel and communicate with the valve outlet.

By placing the balance steel on two self-compensating sealing pistons and at the same time under the action of equal pressure fluid, the pressure at the center of the spherical valve realizes self-balancing. At the same time, the opening and closing functions of the spherical valves are realized by means of different corresponding positions of the spherical valve center with the self-compensating sealing piston pressed against the spherical valve center and the opening / closing passage, which greatly reduces the moment of force that controls the valve. It can be used to control the communication and blocking of medium and high pressure fluid, since the diameter of the passage can be greatly enlarged even at the same pressure rating.

When the pressure fluid flows through the valve body, it passes through the valve body and the cover, and is provided with a symmetrical balanced steel in communication with the valve inlet to enter the symmetrical shape, and at the same time the pressure fluid is spherical. When acting on both sides of the valve center and on the two self-compensating sealing pistons, the valve center is in an equilibrium of pressure, which makes it easy to turn the valve center to lock and realize opening and closing operations at a low rotational moment. In addition, the reduction or prevention of wear of the machine under the fluid pressure can greatly increase the service life of the valve door and reduce the rotational pressure.

In addition, even after the valve is closed, even if there is a pressure in the opposite direction, the valve is placed in a ring-shaped balance steel, so that the lateral pressure is in equilibrium. In this way, mechanical wear caused by pressure imbalance and leakage of the valve door can be prevented.

’자형 구멍은, 직통 구멍 및 이 직통 구멍과 서로 통하는 개방 통로를 포함하기 때문에 구동축이 90도로 회전할 경우에는 ‘

’자형 구멍 속을 통과하고, 통과하는 구멍의 위치 선택에 따라서 개방과 폐쇄 작업을 실현할 수가 있는 것이다.Automatic Compensation Since the sealing piston is in contact with the spherical valve center, one area is smaller than the other area, so that it is pushed directly toward the spherical valve center to ensure sealing and automatically compensates after wear. It is. The back pressure springs provide one reserved powerful force to participate in the seal. And in the center of the old valve

'As a bore, it includes a straight hole and an open passage communicating with the straight hole, so when the drive shaft rotates by 90 degrees,

'The opening and closing work can be realized through the selection of the position of the hole passing through the hole.

      Figure 1 is a cross-sectional guide view of the overall coupling structure for the open state of the new model.

2 is a bird's-eye sectional view of FIG.

Figure 3 is a cross-sectional guide view of the overall coupling structure for the closed state of the new model.

4 is a bird's-eye sectional view of FIG.

Example 1

’자형 구멍(15)과 대응한다. 해당 구형 밸브 중심부(6)와 밸브 몸체(5) 사이에는 자동 보상 밀봉 피스톤(9)을 장착한다.Self-balancing self-compensating sealed spherical valves include the following components: That is, the valve body 5 and the valve cover 7, the spherical valve center 6 mounted in the valve body, the spanner 3 for controlling the spherical valve center 6, and the valve body 5 described above. ) And valve cover 7 are provided with balanced steel 14 in symmetrical form and in communication with valve inlet 12.

Corresponds to the 'shaped hole 15'. An automatic compensation sealing piston 9 is mounted between the spherical valve center 6 and the valve body 5.

Example 2

The self-balancing self-compensating sealed spherical valve described above is equipped with a back pressure spring (8) so as to be symmetrical in its balance steel (14), the back pressure spring (8) having a self-compensating sealing piston (9). On top of it, ensuring that the sealing surfaces are in intimate contact.

Example 3

’자형 구멍의 세 번째 끝이, 고리 모양의 평형강(14)을 통과하여 밸브 출구(13)와 서로 통한다.Self-balancing automatic compensation sealed spherical valve described in Examples 1 and 2,

The third end of the 'hole' passes through the annular balanced steel 14 and communicates with the valve outlet 13.

Example 4

’자형 구멍(15)은 밸브 몸체(5) 내부의 고리 모양 평형강(14)과 하나의 통로로 직접 서로 통한다.Self-balancing self-compensating sealed spherical valves include the following components: Cap (1), flat packing (2), spanner (3), rotary shaft (4), valve body (5), spherical valve center (6), valve cover (7), back pressure spring (8), Automatic compensation seal piston 9, seal ring 10, bolt 11 and the like. The valve cover 7 mentioned above is fixed on the valve body 5 by bolts 11, the automatic compensation sealing piston 9 is mounted in the valve cover 7, and the spherical valve center part 6 is an automatic compensation sealing. It is mounted inside the piston 9, and the back pressure spring 8 is mounted between the valve cover 7 and the automatic compensation sealing piston 9. The right end passage of the valve body 5 mentioned above does not directly communicate with the lumen of the valve body 5, but instead becomes a passage between the valve cover 7 and the valve body 5 up and down. It communicates with the balance steel 14. etc '

The 'holes 15 communicate with each other directly in a passage with the annular balanced steel 14 inside the valve body 5.

The self-balancing self-compensating sealed spherical valve described above has the same size and the same shape as the two self-compensating sealing pistons 9 on both sides thereof.

The self-balancing self-compensating sealed spherical valve described above has its spherical valve center 6 mounted between two self-compensating sealing pistons 9, which have a counterpart with a symmetrical balance steel. In addition to the straight through hole 16, an open passage 17 communicating with the straight through hole 16 is provided. The spanner 3 is connected to the spherical valve center 6 and is fixed on the valve body 5 by a cap 1, and a flat packing 2 between the cap 1 and the spanner. ) Was mounted.

The annular balanced steel 14 inside the valve body 5 is in the form of a round hole, the inlet side divided into two ways, the sum of the areas being equal or slightly smaller than the diameter of the passage requires.

The area of the side where the self-compensating sealing piston 9 and the spherical valve center 6 come into contact is slightly smaller than the area of the other side, so that when the pressure fluid acts on it, the self-compensating sealing piston 9 is spherical. Pressing toward the valve center 6 ensures a sealed state. At the same time, it must be ensured that the shape and size of the two automatic compensation sealing pistons 9 coincide.

’자형 구멍(15)의 개방 통로(17)의 면적은, 모두 관련 기술이 요구하는 바와 부합되어야 한다. 배압 스프링(8)은 자동 보상 밀봉 피스톤(9)의 마찰력을 극복할 수 있어야 하며, 그것이 구형 밸브 중심부(6)에 대해 밀봉의 시초가 되는 힘을 제공할 수 있도록 해야 한다The through hole 16 of the spherical valve center 6 and the spherical valve center 6 in contact therewith

The area of the open passage 17 of the shaped hole 15 should all be in accordance with the requirements of the relevant art. The back pressure spring 8 must be able to overcome the frictional force of the self-compensating sealing piston 9 and should be able to provide the starting force of the seal against the spherical valve center 6.

Claims (3)

Self-balancing self-compensating sealed spherical valve, comprising a valve body and valve cover, and a spherical valve core mounted within the valve body, The valve body and the valve cover is provided with a symmetrical balance steel to communicate with the valve inlet, The balance steel is formed in the center of the spherical valve.

A self-balancing self-compensating sealed spherical valve corresponding to a female bore and having an automatic compensating sealing piston mounted between the spherical valve center and the valve body. The self-balancing self-compensating sealed spherical valve according to claim 1, wherein a back pressure spring is symmetrically mounted in the balance steel, and the back pressure spring is provided to rest on the self-compensating sealing piston. The method of claim 1 or 2, wherein

'The third end of the borehole is a self-balancing self-compensating sealed spherical valve that is arranged to pass through the annular balanced steel and communicate with the valve outlet.

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