High-performance integrated floating ball valve

Abstract

The utility model discloses a high-performance integrated floating ball valve which comprises a valve body, a valve element assembly is arranged in the valve body, and a valve rod used for controlling the valve element assembly is arranged on the valve body. The valve element assembly comprises a ball body, the upper end of the ball body is fixedly connected with the valve rod, a circulation opening is formed in the ball body, a sinking groove is formed in one side of the ball body, a plug is slidably connected into the sinking groove, the sinking groove communicates with a connecting pipe, a cavity is formed in the valve rod, a piston is slidably connected into the cavity, and the piston is connected with the valve rod. And the piston rod is fixedly connected with a driving block. According to the ball valve, the valve element assembly is arranged, when a user closes the valve, the handle structure can be used for driving the driving block to move downwards, then hydraulic oil is used for driving the plug to move, the plug is inserted into the sealing ring, the sealing effect of the valve element assembly is improved, gas leakage is prevented, the safety of the ball valve is improved, and the service life of the ball valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pipeline valve technology, and in particular to a high-performance integrated floating ball valve. Background Technology

[0002] Integrated floating ball valves are widely used in the petroleum, chemical and LNG industries. Their high-performance sealing and compact structure can significantly reduce the risk of pipeline leakage and improve the safety of energy transmission.

[0003] In existing technologies, after frequent use in scenarios where operation is frequent, the ball and the sealing ring of an integrated floating ball valve are repeatedly rubbed together, which can easily lead to gaps due to wear and leakage, severely affecting the service life of the ball valve. For example, in gas transmission, this can cause a great danger of gas leakage. To address this issue, we propose a high-performance integrated floating ball valve. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a high-performance integrated floating ball valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-performance integrated floating ball valve includes a valve body, in which a valve core assembly is disposed, and a valve stem for controlling the valve core assembly is disposed on the valve body.

[0007] The valve core assembly includes a ball, the upper end of which is fixedly connected to a valve stem. The ball has a flow port and a groove on one side. A plug is slidably connected in the groove, and the groove is connected to a connecting pipe. The valve stem has a cavity, and a piston is slidably connected in the cavity. A drive block is fixedly connected to the piston rod, and a handle structure is rotatably connected to the valve stem. The cavity is connected to the connecting pipe, and hydraulic oil is contained in the cavity.

[0008] Preferably, the valve body includes a main body, a valve cavity is formed inside the main body, a ball is disposed inside the valve cavity, a sealing ring is fixedly connected inside the valve cavity and the sealing ring is disposed on both sides of the ball, an upper fixing block and a pressure cap are fixedly connected to the upper end of the valve body in sequence, and the valve stem passes through the upper fixing block and the pressure cap.

[0009] Preferably, the handle structure includes a drive rod rotatably connected to the valve stem, a protrusion fixedly connected to the lower surface of the drive rod, a horizontal plate fixedly connected to the valve stem, and an arc-shaped groove formed on the horizontal plate, the protrusion being located within the arc-shaped groove, a stop block inserted into the arc-shaped groove, the stop block being slidably connected to the horizontal plate, a top block fixedly connected to the pressure cap, the top block abutting against the stop block, a drive groove formed on the drive block, and a slider slidably connected to the drive groove fixedly connected to the drive rod.

[0010] Preferably, the drive groove includes a spiral groove and an arc groove, and the spiral groove and the arc groove are connected.

[0011] Preferably, the valve cavity is provided with packing material, and a sealing ring is fixedly connected inside the valve cavity, with the valve stem and the inner wall of the sealing ring being interference-fitted.

[0012] Preferably, a ratchet is fixedly connected to the lower surface of the drive rod, and a ratchet tooth matching the ratchet is rotatably connected to the pressure cap via a spring shaft, with a lever fixedly connected to the ratchet tooth.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting a valve core assembly, allows the handle structure to drive the drive block downward when the user closes the valve, thereby using hydraulic oil to drive the plug to move and insert the plug into the sealing ring, improving the sealing effect of the valve core assembly, sealing gas leakage, and improving the safety and service life of the ball valve.

[0015] 2. This utility model, by setting a handle structure, allows the user to turn the drive rod when closing the valve. The protrusion abuts against the stop block and drives the valve stem to rotate. When the stop block moves to disengage from the top block, turning the drive rod will not drive the valve stem to rotate. Instead, the slider and drive groove will drive the drive block to move downward, thereby achieving a further sealing effect on the valve. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural schematic diagram of the high-performance integrated floating ball valve proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the ball head structure of the high-performance integrated floating ball valve proposed in this utility model;

[0018] Figure 3 This is a top view of the high-performance integrated floating ball valve proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the horizontal plate structure of the high-performance integrated floating ball valve proposed in this utility model.

[0020] In the diagram: 1. Valve body; 101. Main body; 102. Valve cavity; 103. Sealing ring; 104. Upper fixing block; 105. Pressure cap; 2. Ball; 3. Plug; 4. Connecting pipe; 5. Piston; 6. Drive block; 7. Drive rod; 8. Protrusion; 9. Horizontal plate; 10. Arc groove; 11. Stop block; 12. Top block; 13. Drive groove; 14. Slider; 15. Sealing ring; 16. Ratchet; 17. Ratchet tooth; 18. Lever. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 A high-performance integrated floating ball valve includes a valve body 1, a valve core assembly is provided inside the valve body 1, and a valve stem for controlling the valve core assembly is provided on the valve body 1.

[0023] The valve core assembly includes a ball 2, the upper end of which is fixedly connected to the valve stem. The ball 2 has a flow port and a groove on one side. A plug 3 is slidably connected in the groove. The groove is connected to a connecting pipe 4. A receiving groove is formed on the ball head. The connecting pipe 4 is located in the receiving groove. A cavity is formed on the valve stem, and a piston 5 is slidably connected in the cavity. A drive block 6 is fixedly connected to the piston 5 rod. A handle structure is rotatably connected to the valve stem. The cavity is connected to the connecting pipe 4 and contains hydraulic oil.

[0024] In this design, when the user closes the ball valve, after the control handle structure rotates, the handle structure first drives the valve stem to rotate, turning the flow port on the ball head to a state perpendicular to the flow direction of the fluid. Then the handle structure continues to rotate, driving the drive block 6 to move downward. The drive block 6 drives the piston 5 to move downward, squeezing the hydraulic oil in the cavity into the settling groove. At this time, the plug 3 in the settling groove moves under the drive of hydraulic pressure, using the plug 3 to further seal the valve. Even after the ball 2 is slightly worn, it still has a good sealing effect, extending the service life of the ball valve and ensuring the sealing effect of the ball valve.

[0025] It should be noted that in this design, when the user closes the ball valve, rotating the control handle structure 90° will only cause the ball 2 to rotate 90°. The handle structure needs to be rotated further to ensure the sealing effect. There is a slight difference in operation compared to existing ball valves.

[0026] Furthermore, the valve body 1 includes a main body 101, within which a valve cavity 102 is formed. The ball 2 is located within the valve cavity 102, and a sealing ring 103 is fixedly connected within the valve cavity 102, with the sealing ring 103 positioned on both sides of the ball 2. An upper fixing block 104 and a pressure cap 105 are sequentially fixedly connected to the upper end of the valve body 1. The valve stem passes through the upper fixing block 104 and the pressure cap 105. Packing material is provided within the valve cavity 102, and a sealing ring 15 is fixedly connected within the valve cavity 102. The valve stem and the inner wall of the sealing ring 15 are press-fitted. The packing material and sealing gaskets at each connection point within the valve body 1 are configured according to the existing valve body 1 to ensure the sealing effect of the valve body 1, which will not be elaborated further here.

[0027] In this design, the sealing ring 103 is projected onto both sides of the ball 2, and the sealing ring 103 that mates with the plug 3 is longer. The inner wall of the sealing ring 103 is conical. When the user closes the ball valve, after rotating the ball 2 by 90°, the user can continue to rotate the handle structure, which can move the ball 2 toward the sealing ring 103. When the frequently used part of the sealing ring 103 ages or the plug 3 wears, the handle structure can rotate a larger range, allowing the ball head to move a greater distance into the sealing ring 103, thus maintaining good sealing performance and preventing gas leakage.

[0028] Furthermore, the handle structure includes a drive rod 7 rotatably connected to the valve stem, a protrusion 8 fixedly connected to the lower surface of the drive rod 7, a horizontal plate 9 fixedly connected to the valve stem, and an arc-shaped groove 10 formed on the horizontal plate 9, the protrusion 8 being located within the arc-shaped groove 10, a stop block 11 inserted into the arc-shaped groove 10, the stop block 11 being slidably connected to the horizontal plate 9, a top block 12 fixedly connected to the pressure cap 105, and the top block 12 abutting against the stop block 11, a drive groove 13 formed on the drive block 6, and a slider 14 slidably connected to the drive rod 7 and the drive groove 13.

[0029] In this design, when the user closes the valve, the user rotates the drive rod 7. At this time, the protrusion 8 abuts against the stop block 11, and the stop block 11 abuts against the top block 12. The drive rod 7 drives the valve stem to rotate synchronously. After the valve stem rotates 90°, the stop block 11 slides to a position where it no longer abuts against the top block 12. The stop block 11 will then move downwards. At this time, the user continues to rotate the drive rod 7, and the protrusion 8 slides along the arc groove 10. The slider 14, in conjunction with the drive groove 13, drives the drive block 6 downwards, causing the drive block 6 to squeeze the hydraulic oil in the cavity into the settling tank, thereby actuating the plug. 3. The purpose of the movement is that when the user opens the valve, the drive rod 7 is rotated and the slider 14, in conjunction with the spiral groove, drives the drive block 6 to rise. Then, after the protrusion 8 slides to the end of the arc groove 10 near the stop block 11, the protrusion 8 abuts against the inner wall of the arc groove 10 and drives the valve stem to rotate. It should be noted that, since there are multiple seals in the valve body 1 and the ball 2 abuts against the inner wall of the valve body 1, the frictional resistance of the valve stem rotation is much greater than the resistance of the slider 14 driving the drive block 6 upward. This ensures that when the user opens the valve, the drive plug 3 is retracted into the sink.

[0030] Furthermore, the drive groove 13 includes a spiral groove and an arc groove 10. The spiral groove and the arc groove 10 are connected. The spiral groove is used to drive the drive block 6 to move up and down, while the arc groove 10 makes way for the slider 14. After the user rotates the ball 2 to be perpendicular to the fluid flow direction, the slider 14 slides into the spiral groove through the arc groove 10 to drive the drive block 6 to move down. This leaves a certain gap between the two steps to prevent the plug 3 from sliding out too early and interfering with the sealing ring 103, which would cause the sealing ring 103 to deform.

[0031] Furthermore, a ratchet 16 is fixedly connected to the lower surface of the drive rod 7, and a ratchet tooth 17 matching the ratchet 16 is rotatably connected to the pressure cover 105 via a spring shaft, and a lever 18 is fixedly connected to the ratchet tooth 17.

[0032] In this design, the ratchet 16 and ratchet 17 can restrict the position of the drive rod 7, especially when the plug 3 is inserted into the sealing ring 103. The plug 3 is subjected to the pressure of the medium in the pipeline, which will drive the plug 3 to move towards the ball 2. When the pressure of the medium in the pipeline is greater than the resistance of the plug 3 to movement, the plug 3 is prone to displacement under the influence of the medium. However, the ratchet 16 and ratchet 17 can prevent the medium pressure from driving the plug 3 to move. When the user opens the valve, he can simply move the lever 18 to separate the ratchet 17 from the ratchet 16.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-performance integrated floating ball valve, comprising a valve body (1), characterized in that, The valve body (1) is provided with a valve core assembly, and the valve body (1) is provided with a valve stem for controlling the valve core assembly; The valve core assembly includes a ball (2), the upper end of which is fixedly connected to the valve stem. The ball (2) has a flow port and a groove on one side. A plug (3) is slidably connected in the groove. The groove is connected to a connecting pipe (4). The valve stem has a cavity and a piston (5) is slidably connected in the cavity. A drive block (6) is fixedly connected to the piston (5). A handle structure is rotatably connected to the valve stem. The cavity is connected to the connecting pipe (4) and hydraulic oil is provided in the cavity.

2. The high-performance integrated floating ball valve according to claim 1, characterized in that, The valve body (1) includes a main body (101), a valve cavity (102) is provided in the main body (101), a ball (2) is located in the valve cavity (102), a sealing ring (103) is fixedly connected in the valve cavity (102), and the sealing ring (103) is located on both sides of the ball (2). An upper fixing block (104) and a pressure cap (105) are fixedly connected in sequence at the upper end of the valve body (1), and the valve stem is provided through the upper fixing block (104) and the pressure cap (105).

3. The high-performance integrated floating ball valve according to claim 2, characterized in that, The handle structure includes a drive rod (7) rotatably connected to the valve stem. A protrusion (8) is fixedly connected to the lower surface of the drive rod (7). A horizontal plate (9) is fixedly connected to the valve stem, and an arc groove (10) is provided on the horizontal plate (9). The protrusion (8) is located in the arc groove (10). A stop block (11) is also inserted in the arc groove (10). The stop block (11) is slidably connected to the horizontal plate (9). A top block (12) is fixedly connected to the pressure cap (105), and the top block (12) abuts against the stop block (11). A drive groove (13) is provided on the drive block (6), and a slider (14) is fixedly connected to the drive rod (7) and slidably connected to the drive groove (13).

4. The high-performance integrated floating ball valve according to claim 3, characterized in that, The drive groove (13) includes a spiral groove and an arc groove (10), and the spiral groove and the arc groove (10) are connected.

5. The high-performance integrated floating ball valve according to claim 2, characterized in that, The valve cavity (102) is filled with packing material, and a sealing ring (15) is fixedly connected inside the valve cavity (102). The valve stem is press-fitted with the inner wall of the sealing ring (15).

6. The high-performance integrated floating ball valve according to claim 3, characterized in that, A ratchet (16) is fixedly connected to the lower surface of the drive rod (7), and a ratchet tooth (17) matching the ratchet tooth (16) is rotatably connected to the cover (105) via a spring shaft. A lever (18) is fixedly connected to the ratchet tooth (17).

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