Rapid pressure test system for filter
By designing a rapid pressure testing system for filters and employing a variable frequency pressurization pump and intelligent control module, the problems of water waste and inaccurate pressure control in filter pressure testing systems have been solved, achieving efficient and accurate pressure testing.
Patent Information
- Application Number
- CN202423263051.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing filter pressure testing systems suffer from problems such as water waste, difficulty in controlling pressure values, and inaccurate pressure test results, and also lack sufficient automation and intelligence.
A rapid pressure testing system for filters was designed, which uses a variable frequency booster pump to achieve fine pressure adjustment, separates the water supply and pressurization processes, and uses PLC and FBOX control modules to achieve intelligent operation, and combines multiple sensors and valves for automated control.
It effectively saves water resources, achieves precise pressure control, improves the accuracy and automation of pressure test results, and is suitable for batch testing.
Smart Images
Figure CN223769952U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration and separation technology, and in particular to a rapid pressure testing system for filters. Background Technology
[0002] Pressure testing involves slowly pressurizing a container (or pipeline) by introducing media such as water, oil, or gas to check for leaks, pressure resistance, and potential failure. It is also known as pressure resistance testing. Pressure testing can examine the sealing performance of a structure, penetrating defects in welded joints of pressure-bearing components, and the strength of the structure, and can also reduce welding stress. Currently, commonly used pressure testing methods include hydrostatic testing, pneumatic testing, and combined pneumatic-hydraulic pressure testing.
[0003] Currently, about 50% of pressure testing still relies on traditional manual methods. In recent years, with the increasing application of automation in my country, some automated pressure testing systems have emerged. However, due to insufficient attention from various industries, these systems are mostly limited to replacing traditional manual water intake and pressurization. While they have improved the automation level of pressure testing to some extent, there is still significant room for improvement in terms of intelligence and precision.
[0004] Filter pressure testing systems are primarily used in various stages of filter manufacturing, repair, and routine inspection to ensure that the quality and performance of filters meet relevant standards and requirements. The pressure testing system applies pressure to the filter to test its sealing performance, pressure resistance, and pressure stability, thereby ensuring the filter can operate normally in actual use. Currently, technicians primarily use hydrostatic testing when conducting pressure tests on filters. This involves using a high-pressure pump to inject water into the filter, filling it with liquid, maintaining this position for a certain period, checking for leaks, and then draining the water after the test is complete. This method not only wastes water resources, but the water pressure is also difficult to control. The testing environment can vary even within the same batch of filters, and the test results cannot accurately reflect the filter's sealing performance and strength.
[0005] In view of this, it is necessary to improve the existing filter pressure testing system to solve the above problems. Utility Model Content
[0006] The purpose of this utility model is to disclose a rapid pressure testing system for filters, which separates the water supply and pressurization processes and uses a variable frequency pressurization pump to achieve fine pressure adjustment. This not only effectively reduces water waste but also enables intelligent operation, making it safe and reliable.
[0007] To achieve the above objectives, this utility model provides a rapid pressure testing system for filters, comprising a water inlet module, a pressurization module, an air source module, a filter, and a control module connected in sequence; the filter inlet is connected to the water inlet module and the pressurization module, which are connected in parallel; the pressurization module is used to pressurize and depressurize the liquid inside the filter; the filter outlet is connected to the air source module; and the control module is used to control the filter's water inlet, pressurization, pressure holding, pressure depressurization, and drainage actions.
[0008] In some embodiments, the filter is connected to the water inlet module and the pressurization module and air supply module via rubber hoses.
[0009] In some embodiments, the water inlet module includes a raw water tank, a water injection pump, a water injection valve, a drain valve, and a second flow sensor connected in sequence.
[0010] In some embodiments, the pressurization module includes a replenishing valve, a pressurization tank, a pressure relief valve, a level sensor, a pressurization pump, a pressurization valve, and a drain valve connected in sequence.
[0011] In some embodiments, the gas source module includes a gas storage tank, a pressure exhaust valve, an exhaust valve, and a first flow sensor connected in sequence.
[0012] In some embodiments, the water injection valve, drain valve, pressure relief valve, and pressure boosting valve are all connected to the water inlet of the filter.
[0013] In some embodiments, the pressure relief valve and the exhaust valve are connected in parallel to the outlet of the filter.
[0014] In some embodiments, the filter inlet is also equipped with a second pressure sensor and a temperature sensor.
[0015] In some implementations, the pressure pump is frequency-adjustable based on data from a first pressure sensor.
[0016] In some implementations, the second pressure sensor feeds back data to the control module to control the operation and shutdown of the booster pump.
[0017] In some implementations, the control module consists of a PLC, an industrial computer, and an FBOX, which controls the rapid pressure testing system to inject water, pressurize, maintain pressure, depressurize, drain water, and automatically generate curve reports.
[0018] Compared with the prior art, the beneficial effects of this utility model are: (1) The rapid pressure test system is equipped with two water tanks, one for water injection and the other for pressurization, realizing the cyclic use of water injection and the fine-tuning control of pressurization. The rapid pressure test system is equipped with a pressurization water tank to cope with various scenarios; (2) The pressurization pump is frequency-adjusted according to the test pressure to realize pressure fine-tuning, which is safe and reliable; (3) Automatic water injection and pressure discharge can quickly inject and drain water. The filter is connected to the pressure test system through a rubber hose and a hydraulic quick connector, which is suitable for batch testing; (4) Multiple control valves are connected in parallel, with a compact structure. A pressure sensor is installed on the water inlet pipeline as a safety valve. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the process flow of the rapid pressure testing system shown in this utility model;
[0020] Figure 2 Here is a schematic diagram of the rapid pressure testing system of this utility model (1);
[0021] Figure 3 Here is a schematic diagram of the rapid pressure testing system structure shown in this utility model (2);
[0022] Figure 4 This is a schematic diagram of the internal pipeline structure of the rapid pressure testing system shown in this utility model;
[0023] Explanation of reference numerals in the attached diagram: 1. Raw water tank; 2. Water injection pump; 3. Water injection valve; 4. Drain valve; 5. Second flow sensor; 6. Liquid replenishment valve; 7. Pressurized water tank; 8. Pressure relief valve; 9. Liquid level sensor; 10. Pressurized pump; 11. Pressurized valve; 12. Sewage valve; 13. Air storage tank; 14. Pressure vent valve; 15. Vent valve; 16. First flow sensor; 17. First pressure sensor; 18. Filter; 19. Rubber hose; 20. Second pressure sensor; 21. Temperature sensor; 22. Automatic vent valve; 23. Water inlet; 24. Water outlet; 25. Makeup water inlet; 26. Sewage outlet; 27. Control module; 28. Water inlet pipeline; 28.1. Pressure test interface. Detailed Implementation
[0024] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.
[0025] like Figure 1-4As shown, this embodiment provides a rapid pressure testing system for filters, including a water inlet module, a pressurization module, an air source module, a filter 18, and a control module 27 connected in sequence. The water inlet of the filter 18 is connected to the water inlet module and the pressurization module, which are connected in parallel. The pressurization module is used to pressurize and depressurize the liquid in the filter 18. The water outlet of the filter 18 is connected to the air source module. The control module 27 is used to control the water inlet, pressurization, pressure holding, pressure depressurization, and drainage actions of the filter 18.
[0026] The filter 18 is connected to the water inlet module, the pressurization module, and the air supply module via a rubber hose 19.
[0027] The water inlet module includes a raw water tank 1, a water injection pump 2, a water injection valve 3, a drain valve 4, and a second flow sensor 5, which are connected in sequence.
[0028] The pressurization module includes a replenishing valve 6, a pressurization water tank 7, a pressure relief valve 8, a liquid level sensor 9, a pressurization pump 10, a pressurization valve 11, and a drain valve 12 connected in sequence. The pressurization water tank 7 is equipped with an overflow port and an automatic air vent valve 22 for venting air from the pressurization water tank 7. When the rapid pressure testing system is not used for an extended period, the water inside is discharged through the drain valve 12.
[0029] The gas source module includes a gas storage tank 13, a pressure exhaust valve 14, an exhaust valve 15, and a first flow sensor 16 connected in sequence.
[0030] The water injection valve 3, drain valve 4, pressure relief valve 8, and pressure boosting valve 11 are all connected to the water inlet of the filter 18. The pressure venting valve 14 and the air venting valve 15 are connected in parallel to the water outlet of the filter 18.
[0031] The filter 18 is also equipped with a second pressure sensor 20 and a temperature sensor 21 at its inlet.
[0032] The pressure pump 10 is frequency-adjustable based on the data from the first pressure sensor 17.
[0033] The second pressure sensor 20 feeds back data to the control module 27 to control the operation and shutdown of the pressurization pump 10. The control module 27 consists of a PLC, an industrial computer, and an FBOX, and controls the rapid pressure testing system to inject water, pressurize, maintain pressure, depressurize, and drain water, and automatically generates curve reports.
[0034] like Figure 2-3 As shown, the inlet 23 and outlet 24, the water supply inlet 25 and the drain outlet 26, and the pressure test interface 28.1 of the rapid pressure test system are all hydraulic quick-connect couplings. During operation, the inlet 23 and outlet 24 are connected to the external raw water tank 1 or other water source, and the inlet of the filter 18 is connected to the pressure test interface 28.1.
[0035] like Figure 4 As shown, this rapid pressure testing system has a compact structure and includes an independent pressurized water tank 7 for pressure testing. The pressurized pump 10 switches between fixed and variable frequency operation; when the pressure inside the filter 18 reaches 80% of the set pressure, the pressurized pump 10 starts to switch frequencies. The test water source for this rapid pressure testing system is divided into two parts: one is water supplied to the filter 18 from the raw water tank 1, which is discharged back into the raw water tank 1 for recycling after each pressure test, saving water resources; the other is water supplied to pressurize the filter 18 from the pressurized water tank 7, which is mainly used for pressure regulation. The pressurized water tank 7 is located inside the rapid pressure testing system, allowing for flexible displacement and rapid operation during batch pressure testing. Furthermore, it can also be used for filter maintenance, making it versatile in application scenarios.
[0036] The rapid pressure testing system in this embodiment can automatically inject and drain water through the control module 27. It can only detect the liquid level and synchronously control the flow rate to achieve soft control of the flow rate. The control module 27 can automatically generate a pressure testing curve by operating its touchscreen and inputting pressure testing curve parameters, control the operation of the pressure testing system, measure the pressure testing process with high precision, automatically generate a curve report, and transmit it. This module can also intuitively display the amount of water injected into the filter 18.
[0037] Work process:
[0038] (1) Water injection process:
[0039] Connect the rapid pressure testing system to the inlet and outlet of filter 18, and close drain valve 4, pressure valve 11, pressure relief valve 8, and air release valve 14. Open water injection valve 3 and air release valve 15, and start water injection pump 2 to begin water injection. When the first flow sensor 16 detects that the flow rate has reached the inlet flow rate, the pressurized water tank 7 begins to replenish liquid. When the liquid level sensor 9 of the pressurized water tank 7 detects that the liquid level has reached 90%, the air release valve 15, water injection valve 3, and water injection pump 2 are closed.
[0040] (2) Pressurization and pressure holding process:
[0041] Open the pressure valve 11, start the pressure pump 10, and increase the pressure according to the pressure rise curve set by the control module 27. When the value of the first pressure sensor 17 reaches the design pressure of the filter 18, close the pressure valve 11 and the pressure pump 10, and begin the pressure holding test. After the pressure holding test is completed, open the pressure pump 10 and the pressure valve 11 again, and increase the pressure according to the set pressure rise curve. When the value of the first pressure sensor 17 reaches the test pressure, close the pressure pump 10 and the pressure valve 11, and begin the second pressure holding test. After the pressure holding test is completed, open the pressure relief valve 8 to reduce the pressure. When the first pressure sensor 17 detects that the pressure inside the filter 18 is about to reach the design pressure, close the pressure relief valve 8, and inspect the overall appearance of the filter 18, including the seals and welds.
[0042] It should be noted that the maximum test pressure (i.e., the set pressure) is generally 1.25-1.8 times the design pressure. During the pressurization process, when the test pressure reaches 80% of the set pressure, the pressurization pump 10 starts to use frequency conversion, reducing the pressurization rate to prevent pressure overshoot. During the pressurization process, the second pressure sensor 20 monitors the pressure value online as a safety threshold for pressurization. When the online pressure value exceeds the set value, the pressurization pump 10 shuts down to ensure the safety and reliability of the entire pressurization and pressure holding process.
[0043] (3) Decompression process:
[0044] After the inspection is completed, open the pressure relief valve 8 to release pressure. When the value of the first pressure sensor 17 is 0, close the pressure relief valve 8 to complete the pressure release.
[0045] (4) Drainage:
[0046] When the set time has elapsed after opening the exhaust valve 15, close the exhaust valve 15 and open the drain valve 4 and pressure exhaust valve 14 to drain the gas. When the second flow sensor 5 detects that the flow rate is 0, close the pressure exhaust valve 14. During this pressure exhaust process, if the gas pressure in the filter 18 is detected to exceed 0.1 MPa, the exhaust valve 15 should be opened in time to exhaust the gas.
[0047] The rapid pressure testing system disclosed in this embodiment can be used not only for filter water pressure testing, but also for pressure testing of any kind of pressure vessel or tank.
[0048] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.
[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A quick pressure test system for filters, characterized in that, The water inlet module, the pressurizing module, the air source module, the filter (18) and the control module (27) are sequentially connected; the filter (18) water inlet pipe is connected to the water inlet module and the pressurizing module, and the water inlet module and the pressurizing module are connected in parallel; the pressurizing module is used for pressurizing and depressurizing the liquid of the filter (18); the filter (18) water outlet pipe is connected with the air source module; and the control module (27) is used for controlling the water inlet, pressurization, pressure maintaining, pressure releasing and water discharge actions of the filter (18).
2. The filter quick pressure test system of claim 1, wherein, The filter (18) is connected with the water inlet module, the pressurizing module and the air source module through a rubber hose (19).
3. The filter quick pressure test system of claim 2, wherein, The water inlet module comprises a raw water tank (1), a water injection pump (2), a water injection valve (3), a water discharge valve (4) and a second flow sensor (5) which are sequentially connected.
4. The filter quick pressure test system of claim 3, wherein, The pressurizing module comprises a liquid supplement valve (6), a pressurizing water tank (7), a pressure releasing valve (8), a liquid level sensor (9), a pressurizing pump (10), a pressurizing valve (11) and a sewage valve (12) which are sequentially connected.
5. The filter quick pressure test system of claim 4, wherein, The air source module comprises a gas storage tank (13), a pressure discharge valve (14) and an exhaust valve (15) which are sequentially connected.
6. The filter quick pressure test system of claim 5, wherein, The water injection valve (3), the water discharge valve (4), the pressure releasing valve (8) and the pressurizing valve (11) are connected with the water inlet pipe of the filter (18).
7. The filter quick pressure test system of claim 5, wherein, The pressure discharge valve (14) and the exhaust valve (15) are connected in parallel to the water outlet pipe of the filter (18).
8. The filter quick pressure test system of claim 7, wherein, The water inlet pipe of the filter (18) is further provided with a second pressure sensor (20) and a temperature sensor (21).
9. The filter quick pressure test system of claim 4, wherein, The pressurizing pump (10) is frequency-adjustable according to the data of the first pressure sensor (17).
10. The filter quick pressure test system of claim 8, wherein, The second pressure sensor (20) feeds back data to the control module (27) to control the operation and parking of the pressurizing pump (10).
11. The filter quick pressure test system of claim 10, wherein, The control module (27) is composed of a PLC, an industrial computer and an FBOX, and is used for controlling the water injection, pressurization, pressure maintaining, pressure releasing and water discharge of the rapid pressure test system and automatically generating a curve report.