Ball valve for gas pipeline

Abstract

The utility model belongs to the technical field of gas pipeline ball valves, and particularly relates to a gas pipeline ball valve which comprises a valve body, an upper mounting sleeve, a sealing ring plate, a valve rod, a valve ball body and a through hole, a fixing plate is fixedly connected to the inner wall of the through hole, a plurality of exhaust holes are formed in the fixing plate, an outer fixing frame is fixedly connected to the inner wall of the through hole, and the outer fixing frame is fixedly connected to the upper mounting sleeve. A telescopic rod is installed on one side of the outer fixing frame, and one end of the telescopic rod is fixedly connected with a sealing head matched with the exhaust hole. A telescopic rod and a sealing head correspond to a fixing plate, under communication of a push plate, a sealing sleeve, a communicating pipe and an upper mounting sleeve, after gas leaks, a sliding plate can move, the sealing head and the inner wall of a receding hole are matched to move, the sealing head seals an exhaust hole, a valve ball body is closed, the gas emission amount is reduced, and after gas is closed, the valve ball cannot be used; and a user can conveniently and quickly find the gas leakage condition, so that the gas can be safely used.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology for gas pipelines, and specifically relates to a ball valve for gas pipelines. Background Technology

[0002] In the field of gas transmission and application, ball valves are a widely used key component. During long-term operation, ball valves face numerous technical challenges. With frequent operation and prolonged use, wear inevitably occurs between the ball valve and its stem. This wear gradually compromises the sealing integrity between the ball valve and the valve body, as well as between the stem and related sealing parts, leading to gas leaks. Even when gas leaks occur due to wear, the initial leakage is relatively small, and the gas system may still appear to be operating normally, making it difficult for users to detect the anomaly. Existing gas monitoring equipment and conventional gas usage experience cannot effectively detect these subtle yet highly dangerous leaks. Traditional detection methods often focus on monitoring macroscopic parameters such as gas flow and pressure, lacking accurate and convenient detection mechanisms for minute leaks caused by wear of internal ball valve components. This makes it difficult to detect ball valve leaks in real-world applications, significantly increasing safety hazards during gas use and seriously threatening the surrounding environment, the safety of people and property, and the stable operation of the gas supply system, thus posing a major obstacle to the safe and efficient use of ball valves. Utility Model Content

[0003] This utility model provides a ball valve for gas pipelines, which solves the problem that it is difficult to detect small gas leaks in existing ball valves and valve bodies.

[0004] This utility model provides the following technical solution: It includes a valve body, an upper mounting sleeve, a sealing ring plate, a valve stem, a valve ball body, and a through hole. A fixing plate is fixedly connected to the inner wall of the through hole. Several vent holes are opened on the fixing plate. An outer fixing frame is fixedly connected to the inner wall of the through hole. A telescopic rod is installed on one side of the outer fixing frame. A sealing head matching the vent holes is fixedly connected to one end of the telescopic rod. A spring is sleeved on the outer wall of the telescopic rod. A sliding plate is slidably connected inside the valve ball body. A clearance hole is opened on the sliding plate. A sealing sleeve is installed at the bottom of the valve body. A push plate is slidably connected to the inner wall of the sealing sleeve. The push plate and the sliding plate are connected by a vertical rod. The sealing sleeve and the upper mounting sleeve are connected by a connecting pipe.

[0005] The inner wall of the through hole is provided with a relief groove, and the sliding plate matches the inner wall of the relief groove.

[0006] The valve ball body has a sliding hole that communicates with the relief groove, and the sliding hole matches the sliding plate.

[0007] The sealing ring plate has a sealing plate fixedly connected to its inner wall, the connecting pipe is located between the sealing ring plate and the sealing plate, and a rotating ring is installed on the top of the valve stem.

[0008] The inner wall of the clearance hole is misaligned with the outer wall of the sealing head, the sealing head engages with the vent hole, and an inner fixing bracket for limiting one side of the sealing head is installed on the inner wall of the valve ball body.

[0009] The connection between the connecting pipe and the sealing sleeve is located above the push plate, and the outer wall of the push plate is in contact with the inner wall of the sealing sleeve.

[0010] The beneficial effects of this utility model are: by having the telescopic rod and sealing head correspond to the fixed plate, the sliding plate can be displaced after gas leakage when the push plate, sealing sleeve, connecting pipe and upper mounting sleeve are connected. This, in conjunction with the displacement of the sealing head and the inner wall of the clearance hole, allows the sealing head to seal the exhaust hole, thereby closing the valve ball body and reducing the amount of gas emitted. Furthermore, the valve cannot be used after the gas is shut off, making it easier for users to quickly detect gas leaks and facilitating the safe use of gas.

[0011] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a cross-sectional structural diagram of the valve ball body in this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the fixing plate in this utility model;

[0015] Figure 4 This is a schematic diagram of the movement of the sealing head in this utility model.

[0016] In the diagram: 1. Valve body; 11. Upper mounting sleeve; 12. Sealing ring plate; 121. Sealing plate; 13. Valve stem; 131. Rotating ring; 14. Valve ball body; 15. Through hole; 2. Fixing plate; 21. Vent hole; 22. Outer fixing bracket; 221. Inner fixing bracket; 23. Telescopic rod; 24. Sealing head; 25. Spring; 3. Relief groove; 31. Sliding hole; 32. Slide plate; 33. Relief hole; 34. Vertical rod; 35. Push plate; 36. Sealing sleeve; 37. Connecting pipe. Detailed Implementation

[0017] Please see Figures 1-4The present invention provides the following technical solution: including a valve body 1, an upper mounting sleeve 11, a sealing ring plate 12, a valve stem 13, a valve ball body 14, and a through hole 15. A fixing plate 2 is fixedly connected to the inner wall of the through hole 15. A plurality of vent holes 21 are opened on the fixing plate 2. An outer fixing frame 22 is fixedly connected to the inner wall of the through hole 15. A telescopic rod 23 is installed on one side of the outer fixing frame 22. A sealing head 24 matching the vent holes 21 is fixedly connected to one end of the telescopic rod 23. A spring 25 is sleeved on the outer wall of the telescopic rod 23. A sliding plate 32 is slidably connected inside the valve ball body 14. A clearance hole 33 is opened on the sliding plate 32. A sealing sleeve 36 is installed at the bottom of the valve body 1. A push plate 35 is slidably connected to the inner wall of the sealing sleeve 36. The push plate 35 and the sliding plate 32 are connected by a vertical rod 34. The sealing sleeve 36 and the upper mounting sleeve 11 are connected by a connecting pipe 37.

[0018] In this embodiment: the valve body 1 is used to connect to the gas pipeline through its two ends, so that the upper mounting sleeve 11 installed on the valve body 1 can be sealed to the valve stem 13 by the sealing ring plate 12, allowing the valve stem 13 to rotate on the inner wall of the sealing ring plate 12. The valve stem 13 can drive the valve ball body 14, which is rotatably connected to the inner wall of the valve body 1, to rotate, thereby allowing the through hole 15 on the valve ball body 14 to be adjusted, so that the through hole 15 can control the transmission of gas. In use, the inner cavity of the upper mounting sleeve 11 is separated by the sealing ring plate 12, and the upper cavity can then be connected to the gas pipeline. With the connection of pipe 37, it is connected to the sealing sleeve 36 installed at the bottom of valve body 1. At this time, the push plate 35, which is slidably connected to the inner wall of the sealing sleeve 36, is located below the connecting end of the connecting pipe 37. Thus, when gas leakage occurs due to long-term use of valve ball body 14, after the gas is transmitted to the connecting pipe 37 through the gap between sealing ring plate 12 and valve stem 13, the leaking gas can be guided by the connecting pipe 37, increasing the pressure in the cavity above push plate 35. After being subjected to pressure, push plate 35 can be moved downward. After push plate 35 moves downward, At this time, the upright rod 34 fixedly connected to the top of the push plate 35 is slidably connected to the valve ball body 14 and communicates with the inner wall of the through hole 15. When the upright rod 34 slides down, it can drive the slide plate 32 to slide down synchronously. After the slide plate 32 slides down, the clearance hole 33 can be displaced so that the clearance hole 33 can be displaced to the position corresponding to the sealing head 24. At this time, the telescopic rod 23 fixedly connected to one side of the outer fixed frame 22 can support the sealing head 24, so that the sealing head 24 is horizontally located on the inner wall of the through hole 15. At this time, the spring 25 sleeved on the outer wall of the telescopic rod 23 can push one side of the sealing head 24. This allows the sealing head 24 to seal the several vent holes 21 opened on the fixed plate 2. This enables the device to seal the valve ball body 14 even after the valve stem 13 and valve ball body 14 have been used for a long time and wear has caused gas leakage. If the valve ball body 14 is not closed, the gas in the pipeline has a certain pressure. Under the continuous gas pressure, the valve ball body 14 can be directly sealed. This allows the device to be closed when using gas to reduce the amount of gas emitted. After the gas is closed, it cannot be used. This makes it easy for the user to quickly detect gas leaks, so as to facilitate the safe use of gas.

[0019] The inner wall of the through hole 15 is provided with a relief groove 3, and the sliding plate 32 matches the inner wall of the relief groove 3. The relief groove 3 provided in the inner wall of the through hole 15 can install the sliding plate 32, so that the sliding plate 32 can be relieved by the relief groove 3 and is located in the inner wall of the relief groove 3. When no gas leakage occurs, the sliding plate 32 can be supported in the inner wall of the relief groove 3, so that the relief hole 33 is misaligned with the sealing head 24, thereby preventing the sealing head 24 from sealing the exhaust hole 21 and ensuring the normal use of gas by the device.

[0020] The valve ball body 14 is provided with a sliding hole 31 that communicates with the clearance groove 3. The sliding hole 31 matches the slide plate 32. The sliding hole 31 is used to make room for the installation of the slide plate 32, so that the upright rod 34 can slide on the valve ball body 14 in a sealed manner, and communicates with the inner cavity of the sealing sleeve 36, so that the push plate 35 can drive the upright rod 34 and the slide plate 32 to move synchronously.

[0021] A sealing plate 121 is fixedly connected to the inner wall of the sealing ring plate 12. The connection between the connecting pipe 37 and the upper mounting sleeve 11 is located between the sealing ring plate 12 and the sealing plate 121. A rotating ring 131 is installed on the top of the valve stem 13. The sealing plate 121 fixedly connected to the inner wall of the sealing ring plate 12 can seal the top of the inner wall of the sealing ring plate 12, so that the cavity between the sealing plate 121 and the sealing ring plate 12 can communicate with the connecting pipe 37, thereby allowing the connecting pipe 37 to communicate with the inner cavity of the sealing sleeve 36. When a gap is created between the valve stem 13 and the valve ball body 14, causing gas leakage, the connecting pipe 37 can guide the gas into the sealing sleeve 36. The rotating ring 131 facilitates the rotation of the valve stem 13.

[0022] The inner wall of the clearance hole 33 is offset from the outer wall of the sealing head 24, and the sealing head 24 engages with the exhaust hole 21. An inner fixing bracket 221 for limiting one side of the sealing head 24 is installed on the inner wall of the valve ball body 14. The offset between the inner wall of the clearance hole 33 and the outer wall of the sealing head 24 allows the sealing head 24 to be located on one side of the slide plate 32, so that the position of the sealing head 24 is supported and limited by the slide plate 32, ensuring the connection of gas and allowing it to be moved to the position corresponding to the sealing head 24, so that the sealing head 24 can pass through the clearance hole 33 and dock with the exhaust hole 21. The inner fixing bracket 221 is used to be located outside the sealing head 24, so that the sealing head 24 is clamped and positioned by the inner fixing bracket 221 and the slide plate 32.

[0023] The connection between the connecting pipe 37 and the sealing sleeve 36 is located above the push plate 35, and the outer wall of the push plate 35 is in contact with the inner wall of the sealing sleeve 36. The connecting pipe 37 connects the cavity between the sealing ring plate 12 and the sealing plate 121, and then connects with the inner cavity of the sealing sleeve 36 located above the push plate 35. After the gas enters and the pressure increases, it ensures that the push plate 35 can be pushed and displaced, so that the sliding plate 32 position allows the sealing head 24 to pass through the relief hole 33 and seal the valve ball body 14.

[0024] The working principle and usage process of this utility model are as follows: In use, the top end of the connecting pipe 37 is connected to the cavity between the sealing ring plate 12 and the sealing plate 121, and the bottom end is connected to the inner cavity of the sealing sleeve 36 above the push plate 35. When gas is transmitted to the connecting pipe 37 through the gap between the sealing ring plate 12 and the valve stem 13, the gas leak can be guided by the connecting pipe 37, which increases the pressure in the cavity above the push plate 35. After the push plate 35 is under pressure, it can move downward. After the push plate 35 moves downward, the upright rod 34 can slide down synchronously, driving the sliding plate 32 to slide down synchronously. At this time, the spring 25 sleeved on the outer wall of the telescopic rod 23 can push the sealing head 24 to one side, so that the sealing head 24 seals the several exhaust holes 21 opened on the fixed plate 2, so that the device is closed and the gas emission is reduced. After the gas is closed, it cannot be used. Users can easily detect gas leaks quickly, so as to facilitate the safe use of gas.

Claims

1. A ball valve for gas pipeline, comprising a valve body (1), an upper mounting sleeve (11), a sealing ring plate (12), a valve stem (13), a valve ball body (14) and a through hole (15), characterized in that: The inner wall of the through hole (15) is fixedly connected with a fixed plate (2), a plurality of exhaust holes (21) are formed in the fixed plate (2), the inner wall of the through hole (15) is fixedly connected with an outer fixing frame (22), one side of the outer fixing frame (22) is provided with an extension rod (23), one end of the extension rod (23) is fixedly connected with a sealing head (24) matched with the exhaust hole (21), the outer wall of the extension rod (23) is sleeved with a spring (25), the valve ball body (14) is slidably connected with a sliding plate (32), the sliding plate (32) is provided with a clearance hole (33), the bottom of the valve body (1) is provided with a sealing sleeve (36), the inner wall of the sealing sleeve (36) is slidably connected with a push plate (35), the push plate (35) and the sliding plate (32) are connected through a vertical rod (34), and the sealing sleeve (36) and the upper mounting sleeve (11) are connected through a communication pipe (37).

2. A ball valve for gas piping according to claim 1, characterized in that: The inner wall of the through hole (15) is provided with a clearance groove (3), and the sliding plate (32) is matched with the inner wall of the clearance groove (3).

3. A ball valve for gas piping according to claim 2, characterized in that: The valve ball body (14) is provided with a sliding hole (31) communicated with the clearance groove (3), and the sliding hole (31) is matched with the sliding plate (32).

4. A ball valve for gas piping according to claim 1, characterized in that: The inner wall of the sealing ring plate (12) is fixedly connected with an enclosing plate (121), the connecting pipe (37) and the upper mounting sleeve (11) are connected between the sealing ring plate (12) and the enclosing plate (121), and the valve rod (13) is provided with a rotating ring (131) on the top.

5. A ball valve for gas piping according to claim 1, characterized in that: The inner wall of the clearance hole (33) is dislocated from the outer wall of the sealing head (24), the sealing head (24) is clamped with the exhaust hole (21), and the inner wall of the valve ball body (14) is provided with an inner fixing frame (221) for limiting one side of the sealing head (24).

6. A ball valve for gas piping according to claim 1, characterized in that: The connecting pipe (37) and the sealing sleeve (36) are connected above the push plate (35), and the outer wall of the push plate (35) is attached to the inner wall of the sealing sleeve (36).

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