CN218818530U - Online test and analysis device for water hammer relief valve - Google Patents
Online test and analysis device for water hammer relief valve Download PDFInfo
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- CN218818530U CN218818530U CN202222990817.0U CN202222990817U CN218818530U CN 218818530 U CN218818530 U CN 218818530U CN 202222990817 U CN202222990817 U CN 202222990817U CN 218818530 U CN218818530 U CN 218818530U
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Abstract
The utility model provides an on-line test and analytical equipment of water hammer relief valve, includes distal end pressure portion and guide's formula water hammer relief valve, guide's formula water hammer relief valve includes main valve and pilot valve, and the pilot valve is provided with the valve pressure gauge and is used for leading the tee bend that the pressure portion communicates with the distal end, its characterized in that: the far-end pressure leading part comprises a needle valve, the outlet end of the needle valve is communicated with an inlet at the top end of the tee joint through a pressure leading pipeline, the outlet end of the needle valve is also communicated with a main valve water inlet end pipeline through a joint, the joint is provided with a ball valve, the needle valve is also provided with a pressure gauge, and the pressure gauge valve is arranged between the pressure gauge and the needle valve; an outlet at the lower end of the tee joint is communicated with the pilot valve, and the other outlet of the tee joint is communicated with the inlet end of the main valve through a pipeline; the inlet end of the needle valve is communicated with the hydraulic pump.
Description
Technical Field
The utility model relates to a water hammer relief valve especially relates to an online test and analytical equipment of water hammer relief valve.
Background
The water hammer relief valve has the functions of protecting pipelines and process equipment from overpressure, and is mainly divided into a direct-acting type relief valve, a pilot type water hammer relief valve and a nitrogen type water hammer relief valve according to the action types of the water hammer relief valve, and the valve responds in time, and is reliable in action and tight in sealing.
The pilot-operated water hammer relief valve consists of a main pressure relief valve and an auxiliary pilot valve for controlling action, and the pilot-operated relief valve adopts the working principle that the pilot valve responds to the medium pressure and compares the medium pressure with the set pressure of the valve to guide the main valve to open for pressure relief (or close for returning to a seat).
When the pipeline is in water hammer and the pressure of the protected pipeline rises to be higher than the set pressure of the pilot valve, the pilot valve is opened, the medium in the piston cavity of the main valve is released to the outlet end of the pressure relief main valve, the medium at the inlet of the piston body generates pressure which is higher than the pressure generated at the rear side of the piston body, and the pressure relief main valve is opened to relieve the pressure. When the pressure after the relief is lower than the set pressure of the pilot valve, the pilot valve is closed, so that the pressure in the main valve piston cavity is large enough to the front medium pressure of the piston body, the piston body is closed, and the relief valve is in a closed static state again.
The pilot-operated water hammer relief valve is arranged on a pipeline, no liquid medium is usually arranged on the upstream and the downstream of the pipeline, and the length of the pipeline is different according to different process layouts; the set pressure of the valve needs to be changed on the use site due to process reasons, and the difficulty of changing the set pressure and detecting the pressure through field debugging is very high; when the pilot-operated water hammer relief valve is installed on a pipeline to operate, a liquid medium in the pipeline needs to be led into the pilot valve, and the degree of cleanness of the pipeline and a pipe conveying medium can influence the action precision of the valve; the pilot-operated water hammer relief valve is arranged on a pipeline and normally operates for a period of time, and then the set pressure value of the valve needs to be tested and checked on line, and the method relates to the closing of the cut-off valves on the upstream and downstream of the pipeline, and the pipeline where the pilot-operated water hammer relief valve is arranged is subjected to isolation test, so that the checking time is long, and the accuracy of the result cannot be effectively guaranteed; after the pilot-operated water hammer relief valve normally operates on the pipeline for a period of time, if the pipeline is in overpressure, if the valve cannot be normally sealed after the valve is released, the reason of the fault cannot be analyzed, and a solution cannot be provided for the phenomenon, so that the safe operation of the pipeline is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a following scheme:
an online testing and analyzing device of a water hammer relief valve comprises a far-end pressure leading part and a pilot-operated water hammer relief valve, wherein the pilot-operated water hammer relief valve comprises a main valve and a pilot valve, the pilot valve is provided with a valve pressure gauge, the pilot valve is also provided with a tee joint communicated with the far-end pressure leading part, and the tee joint comprises a water inlet end and two water outlet ends; the far-end pressure leading part comprises a first needle valve and a filter, the inlet end of the first needle valve is connected with a hydraulic pump, the outlet end of the first needle valve is communicated with the inlet end of the filter, the outlet end of the filter is communicated with the water inlet end of the tee joint through a pressure leading pipeline, the lower end of the filter is communicated with the water inlet end pipeline of the main valve through a joint, and the filter is also provided with a pressure gauge; one water outlet end of the tee joint is communicated with the pilot valve through a pipeline, and the other water outlet end of the tee joint is communicated with the pilot valve through a second needle valve; the pilot valve is connected with the inlet end of the main valve through a pilot pipeline, and a third needle valve is arranged on the pilot pipeline.
Furthermore, the inlet end of the filter is arranged on the side wall at one end far away from the pilot valve, and the outlet end of the filter is arranged on the side wall at one end close to the pilot valve; a ball valve is arranged in the joint.
Further, the joint comprises a first joint and a second joint, the first joint and the second joint are connected through a ball valve, the top end of the first joint is communicated with the bottom end of the far-end filter, and the bottom end of the second joint is communicated with the main valve water inlet end pipeline.
Further, the hydraulic pump is a manual hydraulic pump.
Further, a filtering device is further arranged on a pilot pipeline between the third needle valve and the pilot valve.
Further, the pressure gauge and the valve pressure gauge are both connected with a pressure gauge valve.
The utility model has the advantages that:
1. the far-end pressure guiding part is arranged on the pipeline of the water hammer pressure relief valve, so that the valve can be subjected to online testing, the set pressure value can be changed, and the abnormal state of the valve can be analyzed after the overpressure action of the valve.
2. The on-line test is integrated on the far-end filter body, and when the valve performance is tested or analyzed on line, solid particles of media in a pipeline are filtered, so that the valve precision is ensured.
3. The on-site operation is convenient, the dependence degree on the pipeline where the valve is located and the environmental condition is low, and the requirement of completing the use site in a short time is met.
4. The valve seal is checked on site, and particularly, if the valve cannot be normally sealed after pressure relief, the failure reason can be judged, and a solution is provided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the distal end pressure-inducing portion and the water hammer relief valve of the present invention;
fig. 3 is a schematic view of a pilot valve structure.
1. A second joint; 2. a ball valve; 3. a first joint; 4. a filter; 5. a first needle valve; 6. a threaded plug; 7. a pressure gauge valve; 8. a pressure gauge; 9. a pressure-inducing pipeline; 10. a tee joint; 11. a pilot valve; 12. a main valve; 13. a hydraulic manual pump; 14. a distal end pressure-leading part; 15. a valve pressure gauge; 16. a second needle valve; 17. a third needle valve; 18. a filtration device; 19. a piston; 20. a slide valve.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings:
example 1: as shown in fig. 1-3, an online testing and analyzing device for a water hammer relief valve includes a distal end pressure-leading portion 14 and a pilot-operated water hammer relief valve, wherein the pilot-operated water hammer relief valve includes a main valve 12 and a pilot valve 11, the pilot valve 11 is provided with a valve pressure gauge 15, the pilot valve 11 is further provided with a tee 10 for communicating with the distal end pressure-leading portion 14, and the tee 10 includes a water inlet end and two water outlet ends; the far-end pressure guiding part 14 comprises a first needle valve 5 and a filter 4, the inlet end of the first needle valve 5 is connected with a manual hydraulic pump 13, and when the inlet end of the first needle valve 5 is not communicated with the manual hydraulic pump 13, the inlet end is blocked by a threaded plug 6; the outlet end of the first needle valve 5 is communicated with the inlet end of the filter 4, the outlet end of the filter 4 is communicated with the water inlet end of the tee joint 10 through a pressure guide pipeline 9, the lower end of the filter 4 is communicated with the water inlet end pipeline of the main valve 12 through a joint, and the filter 4 is also provided with a pressure gauge 8; one water outlet end of the tee joint 10 is communicated with the pilot valve 11 through a pipeline, and the other water outlet end of the tee joint is communicated with the pilot valve 11 through a second needle valve 16; the pilot valve 11 is connected with the inlet end of the main valve 12 through a pilot pipeline, and a third needle valve 17 and a filtering device 18 are arranged on the pilot pipeline.
The inlet end of the filter 4 is arranged on the side wall of one end far away from the pilot valve 11, and the outlet end of the filter 4 is arranged on the side wall of one end close to the pilot valve 11; a ball valve 2 is arranged in the joint.
The joint comprises a first joint 3 and a second joint 1, the first joint 3 is connected with the second joint 1 through a ball valve 2, the top end of the first joint 3 is communicated with the bottom end of a far-end filter 4, and the bottom end of the second joint 1 is communicated with a main valve 12 water inlet end pipeline.
The pressure gauge 8 and the valve pressure gauge 15 are both connected with a pressure gauge valve 7.
When the pilot type water hammer relief valve is installed on a pipeline, the ball valve 2 and the first needle valve 5 in the far-end pressure leading part are closed, the third needle valve 17 is closed, the second needle valve 16 is opened, the pressure gauge valve 7 is in an open state, the threaded plug 6 is taken down, the interface of the hydraulic manual pump 13 is connected with the first needle valve 5, the first needle valve 5 is opened, the handle of the hydraulic manual pump 13 is operated up and down, the pressure of the piston cavity of the main valve 12 rises, the pressure displayed by the valve pressure gauge 15 gradually increases, when the reading of the valve pressure gauge 15 is close to the set pressure value of the valve, the handle of the hydraulic manual pump 13 is operated slowly, when the reading of the valve pressure gauge 15 reaches the set pressure value, the piston 19 starts to move leftwards, the slide valve 20 also moves leftwards, the medium in the piston cavity of the main valve 12 flows to the downstream along with the pipeline, the piston of the main valve 12 moves rightwards (namely, the main valve is opened), the pressure value of the valve pressure gauge 15 drops, and the highest value displayed by the valve pressure gauge 15 is the set value of the valve, namely, the online test of the valve is completed.
If the set pressure value of the valve needs to be changed on the use site of the pilot-operated type water hammer relief valve, an adjusting bolt on the pilot valve 11 needs to be operated firstly, the adjusting bolt can change the position of a piston 19 or a slide valve 20 in the pilot valve 11 to change the set pressure of the pilot valve 11, a ball valve 2 in a far-end pressure guiding part 14 is closed, the first needle valve 5 is confirmed to be in a closed state, a threaded plug 6 is taken down, an interface of a hydraulic manual pump 13 is connected with the first needle valve 5, the first needle valve 5 is opened, a third needle valve 17 is closed, a second needle valve 16 is opened, a hydraulic manual pump handle 13 is operated up and down, whether the reading of a valve pressure gauge 15 changes or not is observed, when the reading of the valve pressure gauge 15 cannot continuously rise, the value is recorded, and the value is the current set pressure value of the valve; if the error between the pressure value and the required set pressure value is larger, the adjusting bolt on the pilot valve 11 needs to be operated to continuously change the valve pressure, the handle of the hydraulic manual pump 13 is operated up and down, the reading of the valve pressure gauge 15 is observed until the reading of the valve pressure gauge 15 is consistent with the set pressure value, and the on-line change of the set pressure value of the valve is completed.
When the pilot-operated water hammer relief valve finishes overpressure relief on a pipeline, if medium still flows out from the downstream of the main valve 12, under the condition that whether the medium damages a sealing or the piston of the main valve 12 does not completely return to the seat is not clear, online analysis and check can be carried out through the device. The operation is that the ball valve 2 of the far-end pressure-leading part 14 is closed, the third needle valve 17 is closed, the first needle valve 5 is confirmed to be in a closed state, the threaded plug 6 is removed, the interface of the hydraulic manual pump 13 is connected with the first needle valve 5, the first needle valve 5 and the second needle valve 16 are opened, the hydraulic manual pump 13 is operated to increase the pressure in the pressure-leading pipeline 9, the reading of a valve pressure gauge 15 is observed, the pressure value is ensured to be lower than the valve set pressure and higher than the pipeline pressure at the upstream of the main valve 12, if the medium still flows out at the downstream of the main valve 12, the sealing of the main valve 12 is damaged, the sealing part needs to be replaced, and if no medium flows out at the downstream of the main valve 12, the main valve 12 does not completely return to the seat before the online analysis and check. The on-line analysis device is used for checking to ensure that the valve operates normally in a short time and ensure the normal operation of a pipeline.
According to the utility model spirit and principle can also make many variations and improvements, therefore the above example only the utility model discloses to this device utility model thought, principle and one of them explanation of embodiment, this description content should not become to utility model's a restriction, to the technical personnel in this field, all should regard as utility model's protection scope not changing basic operation principle and the multiple variation and the improvement of making under the inventive concept condition.
Claims (6)
1. The utility model provides an on-line test and analytical equipment of water hammer relief valve, includes distal end pressure portion and guide formula water hammer relief valve, guide formula water hammer relief valve includes main valve and pilot valve, and the pilot valve is provided with valve pressure gauge, its characterized in that: the pilot valve is also provided with a tee joint which is used for being communicated with the far-end pressure leading part, and the tee joint comprises a water inlet end and two water outlet ends; the far-end pressure leading part comprises a first needle valve and a filter, the inlet end of the first needle valve is connected with a hydraulic pump, the outlet end of the first needle valve is communicated with the inlet end of the filter, the outlet end of the filter is communicated with the water inlet end of the tee joint through a pressure leading pipeline, the lower end of the filter is communicated with the water inlet end pipeline of the main valve through a joint, and a ball valve is arranged in the joint; the filter is also provided with a pressure gauge; one water outlet end of the tee joint is communicated with the pilot valve through a pipeline, and the other water outlet end of the tee joint is communicated with the pilot valve through a second needle valve; the pilot valve is connected with the inlet end of the main valve through a pilot pipeline, and a third needle valve is arranged on the pilot pipeline.
2. An on-line testing and analyzing device for a surge relief valve as defined in claim 1, wherein: the inlet end of the filter is arranged on the side wall of one end far away from the pilot valve, and the outlet end of the filter is arranged on the side wall of one end close to the pilot valve.
3. An on-line testing and analyzing device for surge relief valves as defined in claim 2, wherein: the joint comprises a first joint and a second joint, the first joint and the second joint are connected through a ball valve, the top end of the first joint is communicated with the bottom end of the far-end filter, and the bottom end of the second joint is communicated with a main valve water inlet end pipeline.
4. The on-line testing and analyzing device for surge relief valves as defined in claim 1, wherein: the hydraulic pump is a manual hydraulic pump.
5. An on-line testing and analyzing device for a surge relief valve as defined in claim 1, wherein: and a filter device is also arranged on the pilot pipeline between the third needle valve and the pilot valve.
6. The on-line testing and analyzing device for surge relief valves as defined in claim 1, wherein: the pressure gauge and the valve pressure gauge are both connected with a pressure gauge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222990817.0U CN218818530U (en) | 2022-11-10 | 2022-11-10 | Online test and analysis device for water hammer relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222990817.0U CN218818530U (en) | 2022-11-10 | 2022-11-10 | Online test and analysis device for water hammer relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218818530U true CN218818530U (en) | 2023-04-07 |
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ID=87254756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222990817.0U Active CN218818530U (en) | 2022-11-10 | 2022-11-10 | Online test and analysis device for water hammer relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218818530U (en) |
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2022
- 2022-11-10 CN CN202222990817.0U patent/CN218818530U/en active Active
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