Exhaust and pressure boosting integrated device for water hammer relief valve and water hammer relief valve system

Abstract

The present invention provides an exhaust and pressurization integrated device for a water hammer relief valve and a water hammer relief valve system. The exhaust and pressurization integrated device includes a cylinder block, a pipeline assembly, a flow-through interface assembly, and a pipeline switching assembly. A flow path switching cavity, a first flow path, and a second flow path communicating with the flow path switching cavity are formed in the cylinder block. The exhaust pipeline of the pipeline assembly is used to connect the upper pressure relief pipeline of the water hammer relief valve and the first flow path, and the pressurization pipeline is used to connect the valve cavity of the water hammer relief valve and the second flow path. The flow-through interface assembly is arranged on the cylinder block corresponding to the periphery of the flow path switching cavity and is used to control the on-off between the flow path switching cavity and the outside. The flow-through interface assembly is used to connect with a pressurization pump. The pipeline switching assembly is used to select one of the first flow path and the second flow path to communicate with the flow path switching cavity. Compared with the method of repeatedly disassembling and assembling the water hammer relief valve to eliminate the failure that the valve core cannot return to its position, the troubleshooting time is significantly shortened, and the use effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water hammer relief valve maintenance, and particularly relates to an integrated device for exhausting and pressurizing a water hammer relief valve and a water hammer relief valve system. Background Art

[0002] To ensure the safe and stable operation of pipelines and prevent damage to pipelines and oil transportation equipment at stations caused by water hammer, water hammer relief valves are usually installed on the inlet and outlet pipelines of stations. The function of the relief valve system is to perform pressure relief protection when the pressure reaches or exceeds the pressure relief setting value of the relief valve.

[0003] During the calibration process of the water hammer relief valve, due to impurities or other reasons in the valve cavity, it is easy for the valve core not to return to its position after the water hammer relief valve operates, resulting in internal leakage. At this time, the water hammer relief valve needs to be disassembled as a whole to eliminate the fault. One re-assembly and disassembly often still causes the valve core not to return to its position completely due to the presence of air in the valve cavity, and it is necessary to repeat the assembly and disassembly multiple times to possibly exhaust the air. In addition, even repeated assembly and disassembly multiple times may not be able to completely exhaust the air. The troubleshooting method of re-assembly and disassembly brings great inconvenience to the maintenance operation of the water hammer relief valve, increases the troubleshooting time, causes a waste of a large amount of manpower, material and financial resources, and even leaves a great potential safety hazard. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides an integrated device for exhausting and pressurizing a water hammer relief valve and a water hammer relief valve system, aiming to solve the technical problems of long troubleshooting time and poor effect caused by repeatedly disassembling and assembling the water hammer relief valve to eliminate the fault that the valve core cannot return to its position.

[0005] To achieve the above object, the present invention provides an integrated device for exhausting and pressurizing a water hammer relief valve. Among them, the integrated device for exhausting and pressurizing a water hammer relief valve includes a cylinder block, a pipeline assembly, a flow-through interface assembly, and a pipeline switching assembly; a flow path switching cavity is formed in the cylinder block, and a first flow channel and a second flow channel communicating with the flow path switching cavity are respectively opened on the front side and the rear side of the flow path switching cavity of the cylinder block; the pipeline assembly includes an exhaust pipeline and a pressurizing pipeline, the exhaust pipeline is used to connect the upper pressure relief pipeline of the water hammer relief valve and the first flow channel, and the pressurizing pipeline is used to connect the valve cavity of the water hammer relief valve and the second flow channel; the flow-through interface assembly is arranged on the cylinder block corresponding to the periphery of the flow path switching cavity and is used to control the on-off between the flow path switching cavity and the outside, and the flow-through interface assembly is used to connect with a pressurizing pump; the pipeline switching assembly is used to select one of the first flow channel and the second flow channel to communicate with the flow path switching cavity.

[0006] In an embodiment of the present invention, a first ring seat and a second ring seat are relatively and spaced apart in the cylinder block. A flow path switching cavity is formed between the first ring seat and the second ring seat. A first flow path is formed on a side of the first ring seat facing away from the second ring seat. And a first mounting hole communicating with the first flow path is formed in the cylinder block. The exhaust pipe is connected to the first mounting hole. A second flow path is formed on a side of the second ring seat facing away from the first ring seat. And a second mounting hole communicating with the second flow path is formed in the cylinder block. The pressure application pipe is connected to the second mounting hole. The pipeline switching component extends into the flow path switching cavity through the inner ring hole of the first ring seat or the second ring seat from the cylinder block and can move in the flow path switching cavity to close the inner ring hole of the first ring seat or the inner ring hole of the second ring seat.

[0007] In an embodiment of the present invention, an adjustment port is formed in the cylinder block. The pipeline switching component includes a hollow sleeve, an adjustment screw rod, and a stop member. The peripheral wall of the hollow sleeve is connected to the periphery forming the adjustment port. And the hollow sleeve extends into the cylinder block and is located outside the flow path switching cavity. The adjustment screw rod passes through the hollow sleeve and extends into the flow path switching cavity from the inner ring hole of the first ring seat or the second ring seat. The outer wall of the adjustment screw rod is threadedly connected to the inner wall of the hollow sleeve. The stop member is arranged at one end of the adjustment screw rod extending into the flow path switching cavity.

[0008] In an embodiment of the present invention, a wrench hole is formed at one end of the adjustment screw rod extending outside the flow path switching cavity.

[0009] In an embodiment of the present invention, the outer diameter of the adjustment screw rod is smaller than the aperture of the inner ring holes of the first ring seat and the second ring seat. The aperture of the inner ring holes of the first ring seat and the second ring seat is smaller than the diameter of the stop member.

[0010] In an embodiment of the present invention, the flow-through interface component includes a flow-through pipeline and a flow-through valve. The flow-through pipeline is arranged at a position of the cylinder block between the first ring seat and the second ring seat and communicates with the flow path switching cavity. One end of the flow-through valve is connected to the flow-through pipeline, and the other end forms an interface connected to a pressure application pump.

[0011] To achieve the above object, the present invention further provides a water hammer relief valve system. Among them, the water hammer relief valve system includes a water hammer relief valve and an exhaust and pressure application integrated device for the water hammer relief valve described above.

[0012] To achieve the above object, the present invention further provides a method for returning the valve core of a water hammer relief valve. Among them, the method for returning the valve core of a water hammer relief valve is applied to the water hammer relief valve system described above and includes:

[0013] Connect the pressure application pump to the flow-through interface component;

[0014] Control the pipeline switching component to switch to the second flow path communicating with the flow path switching cavity;

[0015] Control the pressure pump to perform pressure boosting work to push the spool of the water hammer relief valve back to its original position.

[0016] In the embodiment of the present invention, controlling the pressure pump to perform pressure boosting work to push the spool of the water hammer relief valve back to its original position includes:

[0017] Control the pressure pump to perform pressure boosting work at a preset pressure value to push the spool of the water hammer relief valve back to its original position, where the preset pressure value is less than the pressure relief setting value of the water hammer relief valve.

[0018] In the embodiment of the present invention, after controlling the pressure pump to perform pressure boosting work to push the spool of the water hammer relief valve back to its original position, it further includes:

[0019] Control the pressure pump to perform pressure relief work;

[0020] Remove the pressure pump and control the flow-through interface assembly to cut off the connection between the flow path switching chamber and the outside;

[0021] Control the pipeline switching assembly to switch to the first flow path to communicate with the flow path switching chamber;

[0022] Perform a pressurization operation on the upper pressure relief pipeline of the water hammer relief valve, and judge whether the spool is pushed in place according to the pressure detection value of the upper pressure relief pipeline.

[0023] Through the above technical solutions, the exhaust and pressure boosting integrated device for the water hammer relief valve provided by the embodiment of the present invention has the following beneficial effects:

[0024] When the water hammer relief valve uses the above-mentioned exhaust and pressurization integrated device, since the device includes a cylinder block, a pipeline assembly, a flow-through interface assembly, and a pipeline switching assembly, a flow path switching chamber and a first flow path and a second flow path respectively communicating with the flow path switching chamber are formed in the cylinder block. The exhaust pipeline in the pipeline assembly is connected to the first flow path, and the pressurization pipeline is connected to the second flow path. The pipeline switching assembly can select one of the first flow path and the second flow path to communicate with the flow path switching chamber. At the same time, the flow-through interface assembly communicating with the flow path switching chamber can control the connection and disconnection between the flow path switching chamber and the outside, and is used to connect to a pressurization pump. Then, when the water hammer relief valve needs to realize the exhaust function, the flow path switching chamber can be directly communicated with the outside atmosphere through the flow-through interface assembly, and the first flow path can be selected to communicate with the flow path switching chamber through the pipeline switching assembly. Then, the gas from the upper relief pipeline of the water hammer relief valve can flow through the exhaust pipeline, the first flow path, and the flow path switching chamber in sequence, and finally be discharged from the flow-through interface assembly. When the valve core of the water hammer relief valve cannot return to its position, the pressurization pump can be connected to the flow-through interface assembly, and the flow path switching chamber can be controlled to communicate with the pressurization pump through the flow-through interface assembly. Then, the second flow path can be selected to communicate with the flow path switching chamber through the pipeline switching assembly. Then, the hydraulic oil or lubricating oil of the pressurization pump can flow through the flow-through interface assembly, the flow path switching chamber, the second flow path, and the pressurization pipeline in sequence, and finally flow into the valve cavity to push the valve core to realize the automatic return function. Therefore, the exhaust function and the automatic return function of the valve core can be realized through the exhaust and pressurization integrated device. Compared with the method of repeatedly disassembling and assembling the water hammer relief valve to eliminate the problem that the valve core cannot return to its position, the troubleshooting time is significantly shortened, and the use effect is improved.

[0025] Other features and advantages of the present invention will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is a schematic structural diagram of a water hammer relief valve system according to an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of an exhaust and pressurization integrated device according to an embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a pipeline switching assembly according to an embodiment of the present invention;

[0030] Figure 4 is Figure 3 a schematic structural diagram of the A-direction in

[0031] DESCRIPTION OF THE REFERENCE NUMERALS

[0032] 1 Cylinder block 11 First ring seat

[0033] 12 Second ring seat 13 Inner ring hole

[0034] 14 Flow path switching chamber 15 First flow path

[0035] 16 Second flow path 17 First mounting hole

[0036] 18 Second mounting hole 19 Adjusting port

[0037] 2 Exhaust pipe line 3 Pressurizing pipe line

[0038] 4 Flow-through interface assembly 41 Flow-through pipe line

[0039] 42 Flow-through valve 5 Pipe line switching assembly

[0040] 51 Hollow sleeve 52 Adjusting screw

[0041] 521 Wrench hole 53 Stop member

[0042] 6 Water hammer relief valve 61 Valve core

[0043] 62 Valve chamber 63 Upper connecting relief pipe

[0044] 7 Pressurizing pump 71 Quick-connect joint Detailed implementation manners

[0045] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0046] The exhaust and pressurization integrated device for a water hammer relief valve of the present invention will be described below with reference to the accompanying drawings.

[0047] As Figure 1 shown, in an embodiment of the present invention, there is provided an exhaust and pressurization integrated device for a water hammer relief valve, wherein the exhaust and pressurization integrated device for a water hammer relief valve includes:

[0048] A cylinder block 1, in which a flow path switching chamber 14 is formed, and the cylinder block 1 is provided with a first flow path 15 and a second flow path 16 that are in one-to-one correspondence and communicate with the flow path switching chamber 14 on the front side and the rear side of the flow path switching chamber 14;

[0049] A pipeline assembly, including an exhaust pipe line 2 and a pressurizing pipe line 3, the exhaust pipe line 2 is used to connect the upper connecting relief pipe 63 of the water hammer relief valve 6 and the first flow path 15, and the pressurizing pipe line 3 is used to connect the valve chamber 62 of the water hammer relief valve 6 and the second flow path 16;

[0050] The flow-through interface component 4 is disposed on the cylinder block 1 corresponding to the circumferential side of the flow path switching chamber 14 and is used to control the connection and disconnection between the flow path switching chamber 14 and the outside, and the flow-through interface component 4 is used to connect with the pressure pump 7; and

[0051] The pipeline switching component 5 is used to select one of the first flow path 15 and the second flow path 16 to communicate with the flow path switching chamber 14.

[0052] When the water hammer relief valve 6 uses the above-mentioned exhaust and air injection integrated device, since the device includes a cylinder block 1, a pipeline component, a flow-through interface component 4 and a pipeline switching component 5, a flow path switching chamber 14 and a first flow path 15 and a second flow path 16 respectively communicating with the flow path switching chamber 14 are formed in the cylinder block 1. The exhaust pipeline 2 in the pipeline component is connected to the first flow path 15, the pressure pipeline 3 is connected to the second flow path 16, and the pipeline switching component 5 can select one of the first flow path 15 and the second flow path 16 to communicate with the flow path switching chamber 14. At the same time, the flow-through interface component 4 communicating with the flow path switching chamber 14 can control the connection and disconnection between the flow path switching chamber 14 and the outside and is used to connect with the pressure pump 7. Then, when the water hammer relief valve 6 needs to realize the exhaust function, the flow path switching chamber 14 can be directly communicated with the outside atmosphere through the flow-through interface component 4, and then the first flow path 15 is selected to communicate with the flow path switching chamber 14 through the pipeline switching component 5. Then, the gas from the upper relief pipeline 63 of the water hammer relief valve 6 can flow through the exhaust pipeline 2, the first flow path 15 and the flow path switching chamber 14 in sequence, and finally be discharged from the flow-through interface component 4; when the valve core 61 of the water hammer relief valve 6 cannot return to its position, the pressure pump 7 can be connected to the flow-through interface component 4, and the flow path switching chamber 14 can be controlled to communicate with the pressure pump 7 through the flow-through interface component 4. Then, the second flow path 16 is selected to communicate with the flow path switching chamber 14 through the pipeline switching component 5. Then, the hydraulic oil or lubricating oil of the pressure pump 7 can flow through the flow-through interface component 4, the flow path switching chamber 14, the second flow path 16 and the pressure pipeline 3 in sequence, and finally flow into the valve chamber 62 to push the valve core 61 to realize the automatic return function. Thus, the exhaust function and the automatic return function of the valve core 61 can be realized through the exhaust and pressure injection integrated device. Compared with the method of repeatedly disassembling and assembling the water hammer relief valve 6 to eliminate the situation where the valve core 61 cannot return to its position, the troubleshooting time is significantly shortened and the use effect is improved.

[0053] It should be particularly noted that the pipeline switching component 5 can be a solenoid valve arranged between the first flow channel 15, the second flow channel 16 and the flow-through interface component 4. By controlling the solenoid valve, one of the first flow channel 15 and the second flow channel 16 can be selected to communicate with the flow path switching cavity 14. Of course, it can also be a pure mechanical structure that extends from the cylinder block 1 into the flow path switching cavity 14 and moves within the flow path switching cavity 14 to be able to block one of the first flow channel 15 and the second flow channel 16, so that the other communicates with the flow path switching cavity 14. At the same time, in order to make the valve core 61 of the water hammer relief valve 6 return to its original position, the pressure pipeline 3 extending into the valve cavity 62 is generally located behind the valve core 61.

[0054] See Figure 1 and Figure 2 In the embodiment of the present invention, a first ring seat 11 and a second ring seat 12 are relatively spaced inside the cylinder block 1. A flow path switching cavity 14 is formed between the first ring seat 11 and the second ring seat 12. The side of the first ring seat 11 facing away from the second ring seat 12 forms a first flow channel 15, and a first mounting hole 17 communicating with the first flow channel 15 is formed on the cylinder block 1. The exhaust pipeline 2 is docked with the first mounting hole 17. The side of the second ring seat 12 facing away from the first ring seat 11 forms a second flow channel 16, and a second mounting hole 18 communicating with the second flow channel 16 is formed on the cylinder block 1. The pressure pipeline 3 is docked with the second mounting hole 18. The pipeline switching component 5 extends from the cylinder block 1 through the inner ring hole 13 of the first ring seat 11 or the second ring seat 12 into the flow path switching cavity 14 and can move within the flow path switching cavity 14 to block the inner ring hole 13 of the first ring seat 11 or the inner ring hole 13 of the second ring seat 12. That is, the first ring seat 11 and the second ring seat 12 with the inner ring hole 13 can divide the inner cavity of the cylinder block 1 into a flow path switching cavity 14, a first flow channel 15 and a second flow channel 16. The first flow channel 15 and the second flow channel 16 are respectively arranged on the front and rear sides of the flow path switching cavity 14. The first flow channel 15 communicates with the flow path switching cavity 14 through the inner ring hole 13 on the first ring seat 11 and is docked with the exhaust pipeline 2 through the first mounting hole 17 formed on the cylinder block 1. The second flow channel 16 communicates with the flow path switching cavity 14 through the inner ring hole 13 on the second ring seat 12 and is docked with the pressure pipeline 3 through the second mounting hole 18 formed on the cylinder block 1. At the same time, by adjusting the pipeline switching component 5, one of the inner ring holes 13 of the first ring seat 11 and the inner ring holes 13 of the second ring seat 12 can be selected to be blocked so that the other communicates with the flow path switching cavity 14, thereby realizing the corresponding functions. Specifically, when the exhaust function needs to be realized, the pipeline switching component 5 can be adjusted to block the inner ring hole 13 of the second ring seat 12 so that the first flow channel 15 communicates with the flow path switching cavity 14. When the automatic return function of the valve core 61 needs to be realized, the pipeline switching component 5 can be adjusted to block the inner ring hole 13 of the first ring seat 11 so that the second flow channel 16 communicates with the flow path switching cavity 14.

[0055] See Figure 2 and Figure 3 In the embodiment of the present invention, an adjustment port 19 is formed on the cylinder block 1. The pipeline switching assembly 5 includes a hollow sleeve 51, an adjustment screw 52 and a stopper 53. The peripheral wall of the hollow sleeve 51 is connected to the periphery forming the adjustment port 19, and the hollow sleeve 51 extends into the cylinder block 1 and is located outside the flow path switching cavity 14. The adjustment screw 52 passes through the hollow sleeve 51 and extends into the flow path switching cavity 14 from the inner ring hole 13 of the first ring seat 11 or the second ring seat 12. The outer wall of the adjustment screw 52 is threadedly connected to the inner wall of the hollow sleeve 51. The stopper 53 is arranged at one end of the adjustment screw 52 extending into the flow path switching cavity 14. That is, the hollow sleeve 51 is correspondingly arranged to extend into the cylinder block 1 corresponding to the adjustment port 19, and internal threads are formed on the inner wall of a partial pipe section of the hollow sleeve 51 extending into the cylinder block 1. External threads threadedly connected to the internal threads of the hollow sleeve 51 are formed on the outer wall of the adjustment screw 52. The stopper 53 is arranged at one end of the adjustment screw 52 extending into the flow path switching cavity 14, so that the adjustment screw 52 can be adjusted at the adjustment port 19, so that the adjustment screw 52 can telescopically move on the hollow sleeve 51, thereby adjusting the position of the stopper 53 in the flow path switching cavity 14. Specifically, the stopper 53 can respectively close the inner ring hole 13 of the first ring seat 11 or the second ring seat 12.

[0056] Specifically, a seal can be arranged between the adjustment screw 52 and the hollow sleeve 51 to ensure the sealing performance of the cylinder block 1.

[0057] As Figure 3 and Figure 4 shown, in the embodiment of the present invention, a wrench hole 521 is formed at one end of the adjustment screw 52 extending outside the flow path switching cavity 14. Thus, when it is necessary to adjust the adjustment screw 52, one end of a wrench can be inserted into the wrench hole 521 to facilitate applying force to the adjustment screw 52. Specifically, a setscrew is arranged at one end of the adjustment screw 52 extending outside the flow path switching cavity 14, and the setscrew forms the wrench hole 521. More specifically, the wrench hole 521 is an internal hexagonal hole.

[0058] In the embodiment of the present invention, the outer diameter of the adjusting screw 52 is smaller than the inner diameter of the inner ring holes 13 of the first ring seat 11 and the second ring seat 12, that is, the adjusting screw 52 does not block the inner ring holes 13 of the first ring seat 11 and the second ring seat 12. The inner diameter of the inner ring holes 13 of the first ring seat 11 and the second ring seat 12 is smaller than the diameter of the stopper 53. By setting the diameter of the stopper 53 to be larger than the inner diameter of the inner ring hole 13, the stopper 53 does not need to extend into the inner ring hole 13 to block it. Instead, by driving the stopper 53 to move to abut against the first ring seat 11 or the second ring seat 12 through the adjusting screw 52, the corresponding inner ring hole 13 can be blocked. Specifically, the stopper 53 can be made of rubber so as to closely adhere to the first ring seat 11 and the second ring seat 12.

[0059] Please refer to again Figure 1 , in the embodiment of the present invention, the flow-through interface assembly 4 includes a flow-through pipeline 41 and a flow-through valve 42. The flow-through pipeline 41 is arranged at the position of the cylinder block 1 between the first ring seat 11 and the second ring seat 12 and is communicated with the flow path switching cavity 14. One end of the flow-through valve 42 is connected to the flow-through pipeline 41, and the other end is formed with an interface connected to the pressure pump 7. The arrangement of the flow-through pipeline 41 facilitates the installation of the flow-through valve 42. When the flow-through valve 42 with the interface is not connected to the pressure pump 7, the exhaust function can be realized by opening the flow-through valve 42. When it is connected to the pressure pump 7, opening the flow-through valve 42 can connect the pressure pump 7 with the flow path switching cavity 14, facilitating the pressure pump 7 to inject liquid into the valve cavity 62.

[0060] In addition, refer to Figure 1 and Figure 2 , the first mounting hole 17 and the second mounting hole 18 are opened on the first side of the cylinder block 1, and the flow-through pipeline 41 is arranged on the second side of the cylinder block 1 which is spaced apart from the first side.

[0061] In addition, the present invention also provides a water hammer relief valve system. The water hammer relief valve system includes a water hammer relief valve 6 and an exhaust and pressure application integrated device for the water hammer relief valve as described above. Since the water hammer relief valve system adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated here one by one.

[0062] In addition, the present invention further provides a method for the valve core of the water hammer relief valve to return to its position. The method for the valve core of the water hammer relief valve to return to its position is applied to the water hammer relief valve system as described above and includes:

[0063] Step 100, connect the pressure pump 7 to the flow-through interface assembly 4.

[0064] Specifically, when the problem that the valve core 61 of the water hammer relief valve 6 cannot return to its position is found, first close the front valve of the water hammer relief valve 6 immediately. The front valve can be located on the upper pressure relief pipeline 63 of the water hammer relief valve 6. Then, by opening the flow valve 42 of the flow connection component 4, release the pressure in the pipeline to zero. Then, connect the pressure pump 7 to the interface of the flow valve 42 through the quick connector 71.

[0065] Step 200, control the pipeline switching component 5 to switch to the second flow channel 16 being communicated with the flow path switching cavity 14.

[0066] Specifically, insert a wrench into the wrench hole 521 of the adjusting screw 52 of the pipeline switching component 5 and rotate the wrench so that the adjusting screw 52 can move on the hollow sleeve 51. Finally, the adjusting screw 52 drives the stopper 53 to abut against the first ring seat 11 to close the inner ring hole 13 of the first ring seat 11, thereby cutting off the communication between the first flow channel 15 and the flow path switching cavity 14, so that only the second flow channel 16 is communicated with the flow path switching cavity 14, and enter the valve core automatic return mode.

[0067] Step 300, control the pressure pump 7 to perform a pressure boosting operation to push the valve core 61 of the water hammer relief valve 6 back to its position.

[0068] Specifically, the pressure pump 7 can boost hydraulic oil or lubricating oil into the valve cavity 62 to be able to push the valve core 61 to automatically return to its position. It should be particularly noted that the end of the pressure boosting pipeline 3 extending into the valve cavity 62 should be placed behind the valve core 61 so that the injected hydraulic oil or lubricating oil can push the valve core 61 forward from the rear end of the valve core 61 to return to its position.

[0069] When the water hammer relief valve system uses the above valve core return method, connect the pressure pump 7 to the flow connection component 4, and control the pipeline switching component 5 to switch to the second flow channel 16 being communicated with the flow path switching cavity 14. Then, hydraulic oil or lubricating oil can be injected into the valve cavity 62 through the pressure pump 7 to push the valve core 61 to automatically return to its position. Compared with the method of repeatedly disassembling and assembling the water hammer relief valve 6 to eliminate the problem that the valve core 61 cannot return to its position, the troubleshooting time is significantly shortened and the use effect is improved.

[0070] In the embodiment of the present invention, step 300, controlling the pressure pump 7 to perform a pressure boosting operation to push the valve core 61 of the water hammer relief valve 6 back to its position includes:

[0071] Step 310, control the pressure pump 7 to perform a pressure boosting operation at a preset pressure boosting value to push the valve core 61 of the water hammer relief valve 6 back to its position, where the preset pressure boosting value is less than the pressure relief setting value of the water hammer relief valve 6.

[0072] Specifically, slowly control the pressure pump 7 to a preset pressure value to be close to the pressure relief setting value of the water hammer pressure relief valve 6, and automatically push the valve core 61 of the water hammer pressure relief valve 6 back to its position. For example, if the pressure relief setting value of the water hammer pressure relief valve 6 is 7.7 MPa, the preset pressure value of the pressure pump 7 can be 7 MPa.

[0073] In the embodiment of the present invention, after step 300, controlling the pressure pump 7 to perform a pressure boosting operation to push the valve core 61 of the water hammer pressure relief valve 6 back to its position, it further includes:

[0074] Step 400, controlling the pressure pump 7 to perform a pressure relief operation.

[0075] Specifically, the pressure relief valve of the pressure pump 7 can be opened first to relieve the pressure to zero.

[0076] Step 500, remove the pressure pump 7 and control the flow path switching component 4 to cut off the connection between the flow path switching chamber 14 and the outside.

[0077] Further, after the pressure relief is completed, remove the pressure pump 7 from the interface of the flow control valve 42, and control the flow control valve 42 to close to cut off the connection between the flow path switching chamber 14 and the outside.

[0078] Step 600, control the pipeline switching component 5 to switch to the first flow path 15 being connected to the flow path switching chamber 14.

[0079] More specifically, insert a wrench into the wrench hole 521 of the adjusting screw 52 of the pipeline switching component 5, and rotate the wrench so that the adjusting screw 52 can move on the hollow sleeve 51. Finally, the adjusting screw 52 drives the stopper 53 to abut against the second ring seat 12 to close the inner ring hole 13 of the second ring seat 12, thereby cutting off the connection between the second flow path 16 and the flow path switching chamber 14, so that only the first flow path 15 is connected to the flow path switching chamber 14, and enter the exhaust working mode.

[0080] Step 700, perform a pressurization operation on the upper pressure relief pipeline 63 of the water hammer pressure relief valve 6, and judge whether the valve core 61 is pushed in place according to the pressure detection value of the upper pressure relief pipeline 63.

[0081] Furthermore, slowly open the front valve of the water hammer pressure relief valve 6 for pressurization. During the entire pressurization process, closely observe the pressure detection value of the pressure gauge on the upper pressure relief pipeline 63 and the liquid level of the pressure relief tank. If the pressure detection value does not rise during the pressurization process or the pressure continues to drop after closing the front valve of the water hammer pressure relief valve 6 after pressurization, it indicates that there is still an internal leakage problem with the water hammer pressure relief valve 6, and it is necessary to execute steps 100 to 300 again. Repeat this several times until the valve core 61 of the water hammer pressure relief valve 6 is completely in place and the oil pipeline section can be completely stabilized after pressurization.

[0082] Applying the above exhaust and pressure boosting integrated device to the spool return method of the water hammer relief valve effectively solves the problem that the spool of the water hammer relief valve does not return after the action, and it is necessary to disassemble the water hammer relief valve multiple times for reassembly. It is safe, efficient, convenient to operate, time-saving and labor-saving, greatly shortens the maintenance time, saves the maintenance cost, and can be widely applied to the pilot-operated water hammer relief valve. It has strong popularization potential, saves a large amount of human and material resources, improves the work efficiency, enhances the efficiency of handling equipment defects, and ensures the safe and stable operation of production.

[0083] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0084] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0086] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An integrated device for exhaust and pressure boosting of a water hammer relief valve, characterized in that, it includes: a cylinder block (1), a flow path switching chamber (14) is formed inside the cylinder block (1), and a first flow path (15) and a second flow path (16) communicating with the flow path switching chamber (14) are respectively opened on the front side and the rear side of the flow path switching chamber (14) of the cylinder block (1); a pipeline assembly, including an exhaust pipeline (2) and a pressure boosting pipeline (3), the exhaust pipeline (2) is used to connect the upper pressure relief pipeline (63) of the water hammer relief valve (6) and the first flow path (15), and the pressure boosting pipeline (3) is used to connect the valve chamber (62) of the water hammer relief valve (6) and the second flow path (16); a flow-through interface assembly (4), which is arranged on the cylinder block (1) corresponding to the periphery of the flow path switching chamber (14) and is used to control the on-off between the flow path switching chamber (14) and the outside, and the flow-through interface assembly (4) is used to connect with a pressure boosting pump (7); and a pipeline switching assembly (5), which is used to select one of the first flow path (15) and the second flow path (16) to communicate with the flow path switching chamber (14); an adjustment port (19) is opened on the cylinder block (1), the pipeline switching assembly (5) includes a hollow sleeve (51), an adjustment screw (52) and a stop member (53), the peripheral wall of the hollow sleeve (51) is connected to the periphery of the adjustment port (19), and the hollow sleeve (51) extends into the cylinder block (1) and is located outside the flow path switching chamber (14), the adjustment screw (52) passes through the hollow sleeve (51) and extends into the flow path switching chamber (14), the outer wall of the adjustment screw (52) is threadedly connected to the inner wall of the hollow sleeve (51), the stop member (53) is arranged at one end of the adjustment screw (52) extending into the flow path switching chamber (14), and the adjustment screw (52) is used to adjust the position of the stop member (53) in the flow path switching chamber (14) to select one of the first flow path (15) and the second flow path (16) for closing; When the valve core (61) of the water hammer relief valve (6) cannot return to its original position, connect the pressure boosting pump (7) to the flow-through interface assembly (4); Control the pipeline switching assembly (5) to switch to the second flow path (16) communicating with the flow path switching chamber (14); Control the pressure boosting pump (7) to perform a pressure boosting operation to push the valve core (61) of the water hammer relief valve (6) back to its original position.

2. The integrated device for exhaust and pressure boosting of a water hammer relief valve according to claim 1, characterized in that, A first ring seat (11) and a second ring seat (12) are relatively spaced inside the cylinder block (1). A flow path switching chamber (14) is formed between the first ring seat (11) and the second ring seat (12). A first flow path (15) is formed on a side of the first ring seat (11) facing away from the second ring seat (12). And a first mounting hole (17) communicating with the first flow path (15) is formed on the cylinder block (1). The exhaust pipe (2) is docked with the first mounting hole (17). A second flow path (16) is formed on a side of the second ring seat (12) facing away from the first ring seat (11). And a second mounting hole (18) communicating with the second flow path (16) is formed on the cylinder block (1). The pressure boosting pipe (3) is docked with the second mounting hole (18). The pipeline switching assembly (5) extends into the flow path switching chamber (14) through an inner ring hole (13) of the first ring seat (11) or the second ring seat (12) from the cylinder block (1) and can move in the flow path switching chamber (14) to close the inner ring hole (13) of the first ring seat (11) or the inner ring hole (13) of the second ring seat (12).

3. The exhaust and pressure boosting integrated device for a water hammer relief valve according to claim 2, characterized in that, the adjusting screw (52) passes through the hollow sleeve (51) and extends into the flow path switching chamber (14) through the inner ring hole (13) of the first ring seat (11) or the second ring seat (12).

4. The exhaust and pressure boosting integrated device for a water hammer relief valve according to claim 3, characterized in that, a wrench hole (521) is formed at one end of the adjusting screw (52) extending outside the flow path switching chamber (14).

5. The exhaust and pressure boosting integrated device for a water hammer relief valve according to claim 3, characterized in that, the outer diameter of the adjusting screw (52) is smaller than the aperture of the inner ring hole (13) of the first ring seat (11) and the second ring seat (12), and the aperture of the inner ring hole (13) of the first ring seat (11) and the second ring seat (12) is smaller than the diameter of the stopper (53).

6. The exhaust and pressure boosting integrated device for a water hammer relief valve according to claim 2, characterized in that, the flow-through interface assembly (4) includes a flow-through pipeline (41) and a flow-through valve (42). The flow-through pipeline (41) is arranged at a position of the cylinder block (1) between the first ring seat (11) and the second ring seat (12) and communicates with the flow path switching chamber (14). One end of the flow-through valve (42) is connected to the flow-through pipeline (41), and the other end is formed with an interface connected to the pressure boosting pump (7).

7. A water hammer relief valve system, characterized in that, the water hammer relief valve system includes a water hammer relief valve (6) and the exhaust and pressure boosting integrated device for a water hammer relief valve according to any one of claims 1 to 6.

8. A method for the spool of a water hammer relief valve to return to its position, characterized in that, The method for the spool of the water hammer relief valve to return to its position is applied to the water hammer relief valve system according to claim 7. Controlling the pressure pump (7) to perform a pressure boosting operation to push the spool (61) of the water hammer relief valve (6) back to its position includes: Controlling the pressure pump (7) to perform a pressure boosting operation at a preset pressure value to push the spool (61) of the water hammer relief valve (6) back to its position, where the preset pressure value is less than the pressure relief set value of the water hammer relief valve (6).

9. The method for the spool of the water hammer relief valve to return to its position according to claim 8, characterized in that, After controlling the pressure pump (7) to perform a pressure boosting operation to push the spool (61) of the water hammer relief valve (6) back to its position, it further includes: Controlling the pressure pump (7) to perform a pressure relief operation; Removing the pressure pump (7) and controlling the flow-through interface assembly (4) to cut off the connection between the flow path switching chamber (14) and the outside; Controlling the pipeline switching assembly (5) to switch to the first flow path (15) being connected to the flow path switching chamber (14); Performing a pressurization operation on the upper pressure relief pipeline (63) of the water hammer relief valve (6), and judging whether the spool (61) is pushed in place according to the pressure detection value of the upper pressure relief pipeline (63).

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