Hydraulic control pipe explosion protection butterfly valve

Abstract

The utility model discloses a hydraulic control pipe explosion protection butterfly valve which comprises a butterfly valve body, one end in the butterfly valve body is rotatably connected with a butterfly valve plate, one end of the butterfly valve plate is fixedly provided with a valve plate sealing ring, and the other end in the butterfly valve body is fixedly provided with a sealing washer; according to the utility model, the inclined surface of one side of the inclined surface sealing ring body is attached to the inclined surface of the L-shaped beveled edge gasket to realize primary sealing, and meanwhile, the side sealing ring is attached to the straight inner side of the L-shaped beveled edge gasket to realize secondary sealing, and fluid in a pipeline flows into a cavity between the L-shaped beveled edge gasket and the gasket mounting ring seat during sealing; in this way, the inclined face of the L-shaped beveled edge gasket can be further tightly pressed on the inclined face of one side of the inclined face sealing ring body, the sealing effect can be further improved, the contact area with fluid can be increased through the arranged conical protruding plate, meanwhile, flow guiding is conducted through the flow guiding plate, the water hammer effect can be effectively reduced during closing, and the sealing effect is improved. And meanwhile, the guide plate can achieve a certain reinforcing effect.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve equipment technology, specifically a hydraulically controlled butterfly valve for pipe burst protection. Background Technology

[0002] The hydraulically controlled pipe burst protection butterfly valve is a type of butterfly valve that is hydraulically driven and controlled. It typically uses a hydraulic control system to achieve its function. During normal operation, the valve is fully open, allowing the medium to flow freely in the pipeline. When an abnormal situation such as a pipe burst occurs, causing a sudden increase in flow or a sharp drop in pressure, sensors installed on the pipeline (such as flow sensors and pressure sensors) will detect these changes and transmit signals to the control system. Upon receiving the signal, the control system quickly issues a command to drive the hydraulic actuator, causing the butterfly valve to close rapidly, thereby cutting off the flow of the medium in the pipeline and preventing further escalation of the accident.

[0003] However, the existing hydraulically controlled burst pipe protection butterfly valves have poor internal sealing performance during use. When a burst pipe leaks, the incomplete sealing may lead to continuous leakage and increased losses. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulically controlled butterfly valve for pipe burst protection, which addresses the problem that the existing hydraulically controlled butterfly valves for pipe burst protection have poor internal sealing performance and may lead to continuous leakage and increased losses when pipe burst occurs due to incomplete sealing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulically controlled burst pipe protection butterfly valve, comprising: a butterfly valve body, a butterfly valve plate rotatably connected to one end of the butterfly valve body, a valve plate sealing ring fixedly provided at one end of the butterfly valve plate, a sealing gasket fixedly provided at the other end of the butterfly valve body, and a hydraulic switch rotatably connected to one end of the outer side of the butterfly valve body.

[0006] As a further embodiment of this utility model: the butterfly valve body includes a butterfly valve body ring, a gasket mounting ring is fixedly provided at one end of the inner side of the butterfly valve body ring, a butterfly valve mounting flange is fixedly provided at one end of the outer side of the butterfly valve body ring, a valve stem adapter pipe is connected through and fixedly connected to one end of the valve stem adapter pipe, a U-shaped adapter frame is connected through and fixedly connected to one end of the valve stem adapter pipe, a valve stem adapter through hole is opened at one end of the U-shaped adapter frame, a switch adapter shaft is fixedly provided at one end of the inner side of the U-shaped adapter frame, and an mounting ring through hole is opened inside the gasket mounting ring.

[0007] As a further embodiment of this utility model: the butterfly valve plate includes a butterfly valve plate body, one end of the butterfly valve plate body has an internal threaded hole, one end of the butterfly valve plate body has a conical protrusion fixedly disposed in the middle, one end of the conical protrusion has a guide plate fixedly disposed, the other end of the butterfly valve plate body has an eccentric valve stem seat fixedly disposed, the eccentric valve stem seat has a butterfly valve rotating valve stem fixedly disposed inside, and the butterfly valve rotating valve stem is adapted to pass through the valve stem adapter pipe and the valve stem adapter through hole.

[0008] As a further embodiment of this utility model: the valve plate sealing ring includes a beveled sealing ring body, a side sealing ring is fixedly provided at one end of the beveled sealing ring body, an installation groove is provided at one end of the beveled sealing ring body, and a countersunk hole is provided through the interior of the beveled sealing ring body. The installation groove is adapted to the gap at the connection between the butterfly valve plate body and the conical convex plate, and the specifications and number of the countersunk holes are adapted to the internal threaded holes of the valve plate.

[0009] As a further embodiment of this utility model: the sealing gasket includes a gasket mounting ring seat, an L-shaped beveled gasket is fixedly provided at one end of the inner side of the gasket mounting ring seat, a ring seat mounting through hole is provided at one end of the inner side of the gasket mounting ring seat, one long side of the opening of the L-shaped beveled gasket is fixedly connected to the gasket mounting ring seat, there is a certain gap between one short side of the opening of the gasket mounting ring seat and the gasket mounting ring seat, and the specifications and number of the ring seat mounting through holes are adapted to the mounting ring through holes.

[0010] As a further embodiment of this utility model: the hydraulic switch includes a valve stem fixing sleeve, a hydraulic rod adapter seat is fixedly provided on one side of the valve stem fixing sleeve, a telescopic rod adapter is rotatably connected to one inner side of the hydraulic rod adapter seat, a hydraulic telescopic rod is fixedly provided on one end of the telescopic rod adapter, a hydraulic cylinder is telescopically connected to one end of the hydraulic telescopic rod, a U-shaped adapter seat is fixedly provided on one side of the hydraulic cylinder, a counterweight connecting rod is fixedly provided on the other side of the valve stem fixing sleeve, a counterweight is fixedly sleeved on the outer side of one end of the counterweight connecting rod, the valve stem fixing sleeve is fixedly sleeved on one end of the rotating valve stem of the butterfly valve, and the U-shaped adapter seat is adapted to the adapter shaft of the adapter switch.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, a preliminary seal is achieved by the inclined surface of one side of the inclined sealing ring fitting against the inclined surface of the L-shaped inclined gasket. Simultaneously, a secondary seal is achieved by the side sealing ring fitting against the straight inner side of the L-shaped inclined gasket. During sealing, the fluid in the pipeline flows into the cavity between the L-shaped inclined gasket and the gasket mounting ring seat, thus further pressing the inclined surface of the L-shaped inclined gasket tightly against the inclined surface of one side of the inclined sealing ring, thereby further improving the sealing effect. The conical protrusion increases the contact area with the fluid, and the guide plate effectively reduces the water hammer effect during closure, while also providing a certain degree of reinforcement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the hydraulically controlled burst pipe protection butterfly valve described in this utility model;

[0014] Figure 2 This is a schematic diagram of the butterfly valve body in the hydraulically controlled burst pipe protection butterfly valve described in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the butterfly valve plate in the hydraulically controlled burst pipe protection butterfly valve described in this utility model;

[0016] Figure 4 This is a schematic diagram of the valve plate sealing ring in a hydraulically controlled burst pipe protection butterfly valve according to the present invention;

[0017] Figure 5 This is a schematic diagram of the sealing gasket in a hydraulically controlled burst pipe protection butterfly valve according to the present invention;

[0018] Figure 6 This is a schematic diagram of the hydraulic switch in a hydraulically controlled burst pipe protection butterfly valve according to the present invention.

[0019] In the diagram: 1. Butterfly valve body; 2. Butterfly valve plate; 3. Valve plate sealing ring; 4. Sealing gasket; 5. Hydraulic switch; 10. Butterfly valve body ring; 11. Gasket mounting ring; 12. Butterfly valve mounting flange; 13. Valve stem adapter pipe; 14. U-shaped adapter bracket; 15. Valve stem adapter through hole; 16. Switch adapter shaft; 17. Mounting ring through hole; 20. Butterfly valve plate body; 21. Valve plate internal threaded hole; 22. Conical convex plate; 23. Guide plate; 24. Offset plate. 25. Butterfly valve rotating stem; 30. Inclined sealing ring; 31. Side sealing ring; 32. Mounting groove; 33. Mounting countersunk through hole; 40. Washer mounting ring seat; 41. L-shaped beveled washer; 42. Ring seat mounting through hole; 50. Valve stem fixing sleeve; 51. Hydraulic rod adapter seat; 52. Telescopic rod adapter; 53. Hydraulic telescopic rod; 54. Hydraulic cylinder; 55. U-shaped adapter seat; 56. Counterweight connecting rod; 57. Counterweight. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0022] Reference Figure 1 In this embodiment of the utility model, a hydraulically controlled burst pipe protection butterfly valve includes: a butterfly valve body 1, a butterfly valve plate 2 rotatably connected to one end of the butterfly valve body 1, a valve plate sealing ring 3 fixedly provided at one end of the butterfly valve plate 2, a sealing gasket 4 fixedly provided at the other end of the butterfly valve body 1, and a hydraulic switch 5 rotatably connected to one end of the outer side of the butterfly valve body 1.

[0023] Reference Figure 2 The butterfly valve body 1 includes a butterfly valve body ring 10. A gasket mounting ring 11 is fixedly installed at one end of the inner side of the butterfly valve body ring 10. A butterfly valve mounting flange 12 is fixedly installed at one end of the outer side of the butterfly valve body ring 10. A valve stem adapter pipe 13 is connected through and fixedly connected to one end of the valve stem adapter pipe 13. A U-shaped adapter frame 14 is connected through and fixedly connected to one end of the valve stem adapter pipe 13. A valve stem adapter through hole 15 is opened through one end of the U-shaped adapter frame 14. A switch adapter shaft 16 is fixedly installed at one end of the inner side of the U-shaped adapter frame 14. An installation ring through hole 17 is opened inside the gasket mounting ring 11.

[0024] Reference Figure 3The butterfly valve plate 2 includes a butterfly valve plate body 20. One end of the butterfly valve plate body 20 has an inner threaded hole 21. A conical protrusion 22 is fixedly installed in the middle of one end of the butterfly valve plate body 20. A guide plate 23 is fixedly installed at one end of the conical protrusion 22. An eccentric valve stem seat 24 is fixedly installed at the other end of the butterfly valve plate body 20. A butterfly valve rotating valve stem 25 is fixedly installed inside the eccentric valve stem seat 24. The butterfly valve rotating valve stem 25 is adapted to pass through the valve stem adapter pipe 13 and the valve stem adapter through hole 15.

[0025] Reference Figure 4 The valve plate sealing ring 3 includes a beveled sealing ring body 30. A side sealing ring 31 is fixedly provided at one end of the beveled sealing ring body 30. An installation groove 32 is provided at one end of the beveled sealing ring body 30. An installation countersunk through hole 33 is provided through the interior of the beveled sealing ring body 30. The installation groove 32 is adapted to the gap between the butterfly valve plate body 20 and the conical convex plate 22. The specifications and number of the installation countersunk through holes 33 are adapted to the internal threaded holes 21 of the valve plate.

[0026] Reference Figure 5 The sealing gasket 4 includes a gasket mounting ring seat 40. An L-shaped beveled gasket 41 is fixedly installed on one end of the inner side of the gasket mounting ring seat 40. A ring seat mounting through hole 42 is opened through one end of the gasket mounting ring seat 40. The long side of the opening of the L-shaped beveled gasket 41 is fixedly connected to the gasket mounting ring seat 40. There is a certain gap between the short side of the opening of the gasket mounting ring seat 40 and the gasket mounting ring seat 40. The specifications and number of the ring seat mounting through holes 42 are adapted to the mounting ring through holes 17.

[0027] The above scheme achieves a preliminary seal when the inclined sealing ring 30 is closed by fitting the inclined side of the L-shaped inclined gasket 41 against the inclined side of one side. At the same time, the side sealing ring 31 fits against the straight inner side of the L-shaped inclined gasket 41 to achieve a secondary seal. During sealing, the fluid in the pipeline flows into the cavity between the L-shaped inclined gasket 41 and the gasket mounting ring seat 40. This further presses the inclined side of the L-shaped inclined gasket 41 tightly against the inclined side of the inclined sealing ring 30, thereby further improving the sealing effect. The conical convex plate 22 increases the contact area with the fluid, and the guide plate 23 guides the flow, effectively reducing the water hammer effect during closure. The guide plate 23 also provides a certain reinforcement effect.

[0028] Reference Figure 6The hydraulic switch 5 includes a valve stem fixing sleeve 50. A hydraulic rod adapter seat 51 is fixedly installed on one side of the valve stem fixing sleeve 50. A telescopic rod adapter 52 is rotatably connected to one side of the hydraulic rod adapter seat 51. A hydraulic telescopic rod 53 is fixedly installed at one end of the telescopic rod adapter 52. A hydraulic cylinder 54 is telescopically connected to one end of the hydraulic telescopic rod 53. A U-shaped adapter seat 55 is fixedly installed on one side of the hydraulic cylinder 54. A counterweight connecting rod 56 is fixedly installed on the other side of the valve stem fixing sleeve 50. A counterweight 57 is fixedly sleeved on the outer side of one end of the counterweight connecting rod 56. The valve stem fixing sleeve 50 is fixedly sleeved on one end of the butterfly valve rotating valve stem 25. The U-shaped adapter seat 55 is adapted to the adapter shaft 16 of the adapter switch.

[0029] Using the above scheme: the hydraulic cylinder 54 drives the hydraulic telescopic rod 53 to extend, which in turn drives the internal butterfly valve plate 2 and valve plate sealing ring 3 to rotate through the hydraulic rod adapter 51 fixedly sleeved on the outside of the butterfly valve rotating valve rod 25, thus opening the butterfly valve. When closing, the gravity potential energy of the counterweight 57 drives the counterweight connecting rod 56 to swing down, which in turn drives the internal butterfly valve plate 2 and valve plate sealing ring 3 to rotate in the opposite direction through the hydraulic rod adapter 51 fixedly sleeved on the outside of the butterfly valve rotating valve rod 25, thus closing the valve.

[0030] The working principle of this utility model is as follows: In use, first install the butterfly valve with the valve plate sealing ring 3 and sealing gasket 4 facing the water flow direction. The hydraulic cylinder 54 drives the hydraulic telescopic rod 53 to extend, which in turn drives the internal butterfly valve plate 2 and valve plate sealing ring 3 to rotate via the hydraulic rod adapter 51 fixedly sleeved on the outside of the butterfly valve rotating rod 25, thus opening the butterfly valve. When closing, the gravitational potential energy of the counterweight 57 drives the counterweight connecting rod 56 to swing downwards, thereby driving the internal butterfly valve plate 2 and valve plate sealing ring 3 to rotate in the opposite direction via the hydraulic rod adapter 51 fixedly sleeved on the outside of the butterfly valve rotating rod 25, thus closing the valve. During closure, one side of the inclined sealing ring body 30 is inclined... The L-shaped beveled gasket 41 is initially sealed by its surface contact with the beveled surface, while the side sealing ring 31 is sealed by its flat inner side with the L-shaped beveled gasket 41. During sealing, the fluid in the pipeline flows into the cavity between the L-shaped beveled gasket 41 and the gasket mounting ring seat 40, which further presses the beveled surface of the L-shaped beveled gasket 41 tightly against the beveled surface of the beveled sealing ring 30, thereby further improving the sealing effect. The conical protrusion 22 increases the contact area with the fluid, and the guide plate 23 guides the flow, effectively reducing the water hammer effect when closed. The guide plate 23 also provides a certain degree of reinforcement.

[0031] 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 hydraulically controlled butterfly valve for protecting burst pipes, characterized in that, include: The butterfly valve body (1) has a butterfly valve plate (2) rotatably connected to one end inside the butterfly valve body (1). A valve plate sealing ring (3) is fixedly provided at one end of the butterfly valve plate (2). A sealing gasket (4) is fixedly provided at the other end inside the butterfly valve body (1). A hydraulic switch (5) is rotatably connected to one end outside the butterfly valve body (1).

2. The hydraulically controlled burst pipe protection butterfly valve according to claim 1, characterized in that, The butterfly valve body (1) includes a butterfly valve body ring (10). A gasket mounting ring (11) is fixedly provided on one inner end of the butterfly valve body ring (10). A butterfly valve mounting flange (12) is fixedly provided on one outer end of the butterfly valve body ring (10). A valve stem adapter pipe (13) is connected through and fixed to one side of the butterfly valve body ring (10). A U-shaped adapter frame (14) is connected through and fixed to one end of the valve stem adapter pipe (13). A valve stem adapter through hole (15) is opened through one end of the U-shaped adapter frame (14). A switch adapter shaft (16) is fixedly provided on one inner end of the U-shaped adapter frame (14). An installation ring through hole (17) is opened inside the gasket mounting ring (11).

3. The hydraulically controlled burst pipe protection butterfly valve according to claim 1, characterized in that, The butterfly valve plate (2) includes a butterfly valve plate body (20). A valve plate internal thread hole (21) is opened on the outer side of one end of the butterfly valve plate body (20). A conical protrusion (22) is fixedly provided in the middle of one end of the butterfly valve plate body (20). A guide plate (23) is fixedly provided at one end of the conical protrusion (22). An eccentric valve stem seat (24) is fixedly provided at the other end of the butterfly valve plate body (20). A butterfly valve rotating valve stem (25) is fixedly passed through the eccentric valve stem seat (24).

4. The hydraulically controlled burst pipe protection butterfly valve according to claim 1, characterized in that, The valve plate sealing ring (3) includes a sloping sealing ring body (30), a side sealing ring (31) is fixedly provided at one end of the sloping sealing ring body (30), an installation groove (32) is provided at one end of the sloping sealing ring body (30), and an installation countersunk through hole (33) is provided inside the sloping sealing ring body (30).

5. A hydraulically controlled burst pipe protection butterfly valve according to claim 1, characterized in that, The sealing gasket (4) includes a gasket mounting ring seat (40). An L-shaped beveled gasket (41) is fixedly provided on one end of the inner side of the gasket mounting ring seat (40). A ring seat mounting through hole (42) is provided through one end of the gasket mounting ring seat (40). The long side of the opening of the L-shaped beveled gasket (41) is fixedly connected to the gasket mounting ring seat (40). There is a certain gap between the short side of the opening of the gasket mounting ring seat (40) and the gasket mounting ring seat (40).

6. The hydraulically controlled burst pipe protection butterfly valve according to claim 1, characterized in that, The hydraulic switch (5) includes a valve stem fixing sleeve (50). A hydraulic rod adapter seat (51) is fixedly provided on one side of the valve stem fixing sleeve (50). A telescopic rod adapter (52) is rotatably connected to one side of the hydraulic rod adapter seat (51). A hydraulic telescopic rod (53) is fixedly provided at one end of the telescopic rod adapter (52). A hydraulic cylinder (54) is telescopically connected to one end of the hydraulic telescopic rod (53). A U-shaped adapter seat (55) is fixedly provided on one side of the hydraulic cylinder (54). A counterweight connecting rod (56) is fixedly provided on the other side of the valve stem fixing sleeve (50). A counterweight (57) is fixedly sleeved on the outer side of one end of the counterweight connecting rod (56).

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