Pressure stabilizing pipeline for water pressure test of air storage tank

Abstract

The utility model discloses a pressure stabilizing pipeline for a water pressure test of an air storage tank, and relates to the technical field of pressure containers. The input end of the first stop valve is connected to the output end of the pressure test pump, and the output end is connected to the input end of the first pipeline; the output end of the first pipeline is connected to the input end of the surge tank assembly; the output end of the surge tank assembly is connected to the input end of the second pipeline; the output end of the second pipeline is connected to the input end of the second stop valve; the output end of the second stop valve is connected to the water injection port of the air storage tank; the piezometric tube is of a bent buffer structure, one end of the piezometric tube is fixedly connected to the top of the surge tank assembly, and the other end of the piezometric tube is detachably connected to the pressure gauge. Therefore, the pressure change generated by the pressure test pump can be effectively buffered, and the test pressure is always maintained in the preset range, so that the risks of equipment damage and process failure possibly caused by pressure fluctuation are reduced.

Description

Technical Field

[0001] This application relates to the field of pressure vessel technology, and in particular to a pressure stabilizing pipeline for hydrostatic testing of air storage tanks. Background Technology

[0002] High-pressure air storage tanks are crucial pressure vessels in industrial applications, and their safety performance directly impacts the reliable operation of production systems. According to the national standard GB / T150.4-2011 "Manufacturing, Inspection and Acceptance of Pressure Vessels," tanks with design pressures exceeding a certain threshold must undergo a pressure resistance test. The test medium is typically water, and the test pressure is 1.25 times the design pressure, with a pressure holding time of no less than 30 minutes. This example uses a tank with a design pressure of 11.5 MPa and a volume of 1.1 m³. 3 Taking air storage tanks as an example, their water pressure test pressure must reach 14.375MPa, the test time must be no less than 45 minutes, and the pressure must be kept stable during the pressure holding test. It is forbidden to compensate for pressure decay by continuous pressurization.

[0003] Traditional pressure testing systems mainly consist of a test pump, pressure gauges, and connecting pipelines. During testing, water is injected into a high-pressure air storage tank via the test pump to pressurize it to the target pressure value, and pressure changes in the pipelines are monitored by the pressure gauges. However, under high-pressure conditions, the system is prone to pressure drops due to fluctuations in medium temperature, minor leaks, or changes in sealing performance. Current technology can only compensate for pressure losses by frequently starting and stopping the test pump. However, frequent starting and stopping of the test pump not only wastes a significant amount of electrical energy but also impacts mechanical components such as the test pump and valves, accelerating equipment aging and even causing damage, thus shortening its service life. Utility Model Content

[0004] This application provides a pressure-stabilizing pipeline for hydrostatic testing of air storage tanks, thus solving the problems mentioned in the background art.

[0005] This application provides a pressure-stabilizing pipeline for hydrostatic testing of an air storage tank, including a pressure-stabilizing tank assembly, a pressure measuring tube, a pressure gauge, a first pipeline, a second pipeline, a first shut-off valve, and a second shut-off valve. The input end of the first shut-off valve is connected to the output end of the test pump, and the output end is connected to the input end of the first pipeline. The output end of the first pipeline is connected to the input end of the pressure-stabilizing tank assembly. The output end of the pressure-stabilizing tank assembly is connected to the input end of the second pipeline. The output end of the second pipeline is connected to the input end of the second shut-off valve, and the output end of the second shut-off valve is connected to the water inlet of the air storage tank. The pressure measuring tube has a bent buffer structure, with one end connected to the top of the pressure-stabilizing tank assembly via a delivery pipe, and the other end detachably connected to the pressure gauge. The pressure measuring tube is used to absorb liquid pressure fluctuations and flow shocks, and the pressure gauge is used to monitor the pressure value inside the pressure-stabilizing tank assembly in real time.

[0006] In one possible implementation, the pressure stabilizing tank assembly includes a tank body and two end caps; the two end caps are respectively welded to both ends of the tank body; the top of the tank body is fixedly connected to the end of the pressure measuring tube away from the pressure gauge; the output end of the first pipe and the input end of the second pipe are respectively connected to the middle of the two end caps.

[0007] In one possible implementation, the pressure stabilizing pipeline for the air storage tank hydrostatic test further includes multiple support bases; the multiple support bases are evenly distributed circumferentially along the bottom of the pressure stabilizing tank assembly to support the pressure stabilizing tank assembly.

[0008] In one possible implementation, both the first shut-off valve and the second shut-off valve are small-orifice shut-off valves.

[0009] In one possible implementation, the pressure measuring tube has an "O"-shaped spiral structure.

[0010] In one possible implementation, the input end of the first shut-off valve and the output end of the test pressure pump, and the output end of the second shut-off valve and the water inlet of the air storage tank are both sealed together by means of a union nut and a first sealing gasket.

[0011] In one possible implementation, the pressure-stabilizing pipeline for the hydrostatic test of the air storage tank further includes multiple eye bolts, a tee, and a plug; the multiple eye bolts are symmetrically arranged on both sides of the corresponding support base to provide lifting fulcrums when the pressure-stabilizing tank assembly is placed on its side; the input end of the tee is connected to the output end of the second pipeline, the first output end is connected to the input end of the second shut-off valve, and the second output end is provided with a threaded interface; the plug is threadedly connected to the second output end of the tee; when sewage needs to be discharged, the pressure-stabilizing tank assembly is tilted with the end cap arc facing down using the eye bolts, and the plug is removed to discharge the settled sewage.

[0012] In one possible implementation, the pressure stabilizing pipeline for the air storage tank hydrostatic test further includes a filter assembly; the filter assembly is disposed between the delivery pipe and the pressure measuring pipe.

[0013] In one possible implementation, the filter assembly includes a filter screen and two pressure rings; the filter screen is disposed between the end of the delivery pipe away from the pressure stabilizing tank assembly and the connecting pipe of the pressure measuring pipe; the two pressure rings are respectively fixedly disposed at the top and bottom of the filter screen; the inner wall of the pressure ring located at the top of the filter screen is provided with an annular groove.

[0014] In one possible implementation, the pressure stabilizing pipeline for the hydrostatic test of the air storage tank further includes a second sealing gasket; the second sealing gasket is disposed between the flange face of the delivery pipe and the pressure measuring pipe connector.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0016] The pressure-stabilizing pipeline for hydrostatic testing of air storage tanks provided in this application includes a pressure-stabilizing tank assembly, a pressure measuring tube, a pressure gauge, a first pipeline, a second pipeline, a first shut-off valve, and a second shut-off valve. In actual operation, the air storage tank is first filled with water using a water pump. Then, the first and second shut-off valves are opened. Subsequently, the pressure testing pump is started to inject water into the pressure-stabilizing tank assembly and gradually increase the pressure. The pressure-stabilizing tank assembly, through its internal volume adjustment, can effectively absorb instantaneous pressure fluctuations from the pressure testing pump, thereby reducing direct impact and potential damage to the air storage tank. Simultaneously, the bending buffer structure of the pressure measuring tube further absorbs liquid pressure pulsations and flow shocks caused by temperature changes or minor leaks within the system. This design aims to prevent pressure gauge reading distortion due to instantaneous vibration, ensuring that the entire pressurization process is stable and orderly.

[0017] When the pressure gauge on the air storage tank reaches the preset target test pressure, the second shut-off valve must be immediately closed to cut off the connection between the air storage tank and the pipeline system. At this point, the air storage tank will enter a pressure-holding state. The pressure testing pump continues to pressurize the pressure-stabilizing tank to a certain value, after which the first shut-off valve is closed. During this stage, the pressure-stabilizing tank assembly acts as an independent pressure source. If a minor leak occurs in the system during the pressure-holding period, causing the pressure drop to exceed the allowable threshold, this application can compensate for the minor leak by opening the second shut-off valve and using the water medium stored inside the pressure-stabilizing tank. This avoids frequent start-ups and shutdowns of the pressure testing pump and meets the strict requirement of "prohibition of continuous pressurization" in relevant standards. Therefore, the pressure-stabilizing pipeline design of this application is scientifically sound and can effectively buffer pressure changes generated by the pressure testing pump, ensuring that the test pressure is always maintained within the preset range. This reduces the risk of equipment damage and process failure due to pressure fluctuations and provides necessary protection for the test pump. This design not only improves the accuracy and safety of the test but also extends the service life of related equipment, possessing significant practical application value. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the pressure stabilizing pipeline for hydrostatic testing of an air storage tank, provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of the pressure stabilizing tank assembly provided in the embodiments of this application;

[0021] Figure 3 for Figure 1 Enlarged view of section A in the image;

[0022] Figure 4 This is a schematic diagram of the structure of the eye bolt provided in the embodiments of this application;

[0023] Figure 5 Provided for the embodiments of this application

[0024] Figure 6 for Figure 5 A magnified view of section B in the image.

[0025] Icons: 1-Pressure tank assembly; 11-Tank body; 12-End cap; 2-Pressure testing tube; 3-Pressure gauge; 4-First pipeline; 5-Second pipeline; 6-First shut-off valve; 7-Second shut-off valve; 8-Air storage tank; 9-Test pressure pump; 10-Union nut; 101-First sealing gasket; 102-Support base; 103-Lifting eye bolt; 104-T-connector; 105-Plug; 106-Filter assembly; 1061-Pressure ring; 1062-Filter screen; 107-Second sealing gasket. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for 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 application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" 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; 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 the embodiments of this application according to the specific circumstances.

[0028] This application provides a pressure-stabilizing pipeline for hydrostatic testing of air storage tanks, such as... Figures 1 to 6 As shown. The pressure-stabilizing pipeline for the hydrostatic test of the air storage tank includes a pressure-stabilizing tank assembly 1, a pressure measuring tube 2, a pressure gauge 3, a first pipe 4, a second pipe 5, a first shut-off valve 6, and a second shut-off valve 7. The input end of the first shut-off valve 6 is connected to the output end of the test pump 9, and the output end is connected to the input end of the first pipe 4. The output end of the first pipe 4 is connected to the input end of the pressure-stabilizing tank assembly 1. The output end of the pressure-stabilizing tank assembly 1 is connected to the input end of the second pipe 5. The pressure-stabilizing tank assembly 1 is used to store the test medium water, and regulates the liquid pressure inside the tank by absorbing and releasing gas to maintain a stable output liquid pressure. The output end of the second pipe 5 is connected to the input end of the second shut-off valve 7, and the output end of the second shut-off valve 7 is connected to the water inlet of the air storage tank 8. The pressure measuring tube 2 has a bent buffer structure; one end of the pressure measuring tube 2 is connected to the top of the pressure-stabilizing tank assembly 1 through a delivery pipe, and the other end is detachably connected to the pressure gauge 3. The pressure gauge 3 has a range of 1.5 to 3 times the test pressure, and its accuracy must not be lower than 1.6 grade, with a dial diameter not less than 100 mm. The pressure measuring tube 2 is used to absorb liquid pressure fluctuations and flow shocks, while the pressure gauge 3 is used to monitor the pressure value inside the pressure stabilizing tank assembly 1 in real time.

[0029] Specifically, based on the required liquid pressure value for the air storage tank 8 test, this application selects a pressure gauge 3 with suitable accuracy and range. Subsequently, this application connects the pressure gauge 3 to the end of the pressure measuring tube 2 furthest from the pressure stabilizing tank assembly 1, ensuring a good seal at the connection point and preventing any leakage. During the connection process, the dial of the pressure gauge 3 can be adjusted to a position convenient for inspectors to visually observe the pressure value, ensuring the accuracy and convenience of the test process. Simultaneously, this application tightly connects the input end of the first shut-off valve 6 to the output end of the test pump 9 via a flexible hose, ensuring excellent sealing at the connection point and preventing any leakage; similarly, the output end of the second shut-off valve 7 is securely connected to the water inlet of the air storage tank 8 via a flexible hose, also ensuring an impeccable seal at the connection point and preventing any possible leakage. This design aims to ensure the safety and accuracy of the test process, providing a strong guarantee for the smooth conduct of the test.

[0030] It should be noted that in actual operation, the air storage tank 8 is first filled with water using a water pump. Then, the first shut-off valve 6 and the second shut-off valve 7 are opened. Subsequently, the pressure testing pump 9 is started to inject water into the pressure stabilizing tank assembly 1 and gradually increase the pressure. The pressure stabilizing tank assembly 1, through its internal volume adjustment, can effectively absorb the instantaneous pressure fluctuations output by the pressure testing pump 9, thereby reducing the direct impact and potential damage to the air storage tank 8. Simultaneously, the bending buffer structure of the pressure measuring tube 2 can further absorb the liquid pressure pulsations and flow shocks caused by temperature changes or minor leaks within the system. This design aims to prevent the pressure gauge 3 from distorting its readings due to instantaneous vibrations, ensuring that the entire pressurization process can proceed smoothly and orderly.

[0031] When the pressure gauge on the air storage tank 8 reaches the preset target test pressure, the second shut-off valve 7 must be immediately closed to cut off the connection between the air storage tank 8 and the pipeline system. At this time, the air storage tank 8 will enter a pressure-holding state. After the pressure test pump 9 continues to pressurize the pressure stabilizing tank to a certain value, the first shut-off valve 6 is closed. During this stage, the pressure stabilizing tank assembly 1 will act as an independent pressure source. If a minor leak occurs in the system during the pressure holding period of the air storage tank 8, causing the pressure drop to exceed the allowable threshold, this application can compensate for the minor leak by opening the second shut-off valve 7 and using the water medium stored inside the pressure stabilizing tank. This avoids frequent start-stop of the pressure test pump 9 and meets the strict requirement of "prohibition of continuous pressurization" in relevant standards. Therefore, the pressure stabilizing pipeline design of this application is scientific and reasonable, effectively buffering the pressure changes generated by the pressure test pump 9, ensuring that the test pressure is always maintained within the preset range, thereby reducing the risk of equipment damage and process failure caused by pressure fluctuations, and also providing necessary protection for the test pump. This design not only improves the accuracy and safety of the experiment, but also extends the service life of the related equipment, and has important practical application value.

[0032] In this embodiment, the pressure stabilizing tank assembly 1 includes a tank body 11 and two end caps 12. The two end caps 12 are welded to both ends of the tank body 11. The top of the tank body 11 is fixedly connected to the end of the pressure measuring tube 2 furthest from the pressure gauge 3. The output end of the first pipe 4 and the input end of the second pipe 5 are respectively connected to the middle of the two end caps 12.

[0033] It should be noted that a pipe interface is provided in the middle of the end cap 12. This design aims to prevent fluid from directly impacting the weld area of ​​the tank body 11, thereby significantly reducing the risk of fatigue cracking caused by stress concentration. The first pipe 4 and the second pipe 5 are symmetrically connected in the middle of the two end caps 12. This layout allows the water flow to diffuse evenly along the axial direction of the tank body 11, effectively reducing turbulence and thus improving the volume utilization rate of the pressure tank assembly 1. In addition, the pressure measuring tube 2 is carefully fixed at the highest point of the top of the tank body 11, ensuring that the pressure monitoring point is exactly located at the static pressure reference position of the tank body 11. This ingenious design eliminates reading deviations caused by air bubble accumulation, ensuring the accuracy and reliability of pressure measurement.

[0034] In this embodiment, the pressure-stabilizing pipeline for the hydrostatic test of the air storage tank further includes multiple support bases 102. The multiple support bases 102 are evenly distributed circumferentially along the bottom of the pressure-stabilizing tank assembly 1 to support the pressure-stabilizing tank assembly 1.

[0035] In this embodiment, both the first shut-off valve 6 and the second shut-off valve 7 are small-orifice shut-off valves. Because the inner diameter of a small-orifice shut-off valve is small, it is easy to control the pressure, and its switching torque is also relatively small, making it easy to operate manually.

[0036] It should be noted that the first shut-off valve 6 of this application controls the flow and cut-off of test water output from the test pressure pump 9 via an operating switch, and the second shut-off valve 7 of this application controls the flow and cut-off of test water output from the pressure stabilizing tank assembly 1 via an operating switch. The first shut-off valve 6 and the second shut-off valve 7 of this application can also be used to inject and discharge liquids or contaminants into the pressure stabilizing tank assembly 1.

[0037] In this embodiment, the pressure measuring tube 2 has an "O" shaped spiral structure.

[0038] Specifically, the bending radius of the pressure measuring tube 2 in this application is not less than 5 times its diameter.

[0039] In this embodiment, the input end of the first shut-off valve 6 and the output end of the test pressure pump 9, and the output end of the second shut-off valve 7 and the water inlet of the air storage tank 8 are all sealed together by means of a union nut 10 and a first sealing gasket 101.

[0040] It should be noted that when the union nut 10 is tightened, the first sealing gasket 101 is subjected to a compressive force, which can generate sufficient sealing pressure to ensure a tight fit between the sealing surfaces, thereby further enhancing the sealing effect.

[0041] In this embodiment, the pressure-stabilizing pipeline for the hydrostatic test of the air storage tank further includes multiple eye bolts 103, a three-way valve 104, and a screw plug 105. The multiple eye bolts 103 are symmetrically arranged on both sides of the corresponding support base 102 to provide lifting fulcrums when the pressure tank assembly 1 is placed on its side. The input end of the three-way valve 104 is connected to the output end of the second pipeline 5, the first output end is connected to the input end of the second shut-off valve 7, and the second output end is provided with a threaded interface. The screw plug 105 is threadedly connected to the second output end of the three-way valve 104. When drainage is required, the pressure tank assembly 1 is tilted with the end cap 12 facing downwards using the eye bolts 103, and the screw plug 105 is removed to drain the settled waste.

[0042] During long-term use of the pressure stabilizing tank assembly 1, impurities in the medium will gradually settle. When a drainage operation is required, the operator uses the eye bolt 103 to tilt the pressure stabilizing tank assembly 1 to a suitable position, and then removes the plug 105. At this time, the dirt settled at the bottom of the pressure stabilizing tank assembly 1 can be smoothly discharged through the second output end of the three-way body 104 under the action of gravity. This design cleverly avoids complex processes such as directly drilling holes in the pressure stabilizing tank assembly 1 and welding transition plates to connect threads, which simplifies the structure, reduces manufacturing costs, and reduces the sealing risks that may be caused by drilling holes and welding.

[0043] In this embodiment, the pressure stabilizing pipeline for the air storage tank hydrostatic test further includes a filter assembly 106. The filter assembly 106 is disposed between the delivery pipe and the pressure measuring pipe 2.

[0044] In this embodiment, the filter assembly 106 includes a filter screen 1062 and two pressure rings 1061. The filter screen 1062 is disposed between the end of the delivery pipe away from the pressure stabilizing tank assembly 1 and the connecting pipe of the pressure measuring pipe 2. The two pressure rings 1061 are respectively fixedly disposed at the top and bottom of the filter screen 1062. The inner wall of the pressure ring 1061 located at the top of the filter screen 1062 is provided with an annular groove.

[0045] Specifically, the two pressure rings 1061 are welded together with the filter screen 1062 to ensure that the filter assembly 106 maintains structural stability and integrity during long-term use.

[0046] During the hydrostatic test, the medium is transported to the pressure measuring tube 2 through the delivery pipe. The filter screen 1062 can effectively intercept solid particles, impurities and other contaminants in the medium, preventing them from entering the pressure measuring tube 2 and avoiding contaminants clogging the pressure measuring tube 2, which would affect the accurate measurement of pressure by the pressure gauge 3. At the same time, it protects the pressure gauge 3 from damage caused by contaminants, extends the service life of the pressure gauge 3, and improves the reliability and stability of the entire hydrostatic test system.

[0047] The inner wall of the pressure ring 1061 located at the top of the filter screen 1062 is provided with an annular groove. This unique design greatly facilitates the disassembly of the filter assembly 106. When it is necessary to replace or clean the filter screen 1062, the operator can insert a special tool into the annular groove and pry the tool to easily remove the filter assembly 106 from its installation position, shortening maintenance time and improving work efficiency.

[0048] In this embodiment, the pressure-stabilizing pipeline used for the hydrostatic test of the air storage tank further includes a second sealing gasket 107. The second sealing gasket 107 is disposed between the flange faces of the delivery pipe and the pressure measuring pipe 2, and is used to fill the small gap between the flange faces to prevent media leakage, ensure the sealing performance of the pressure-stabilizing pipeline during the test, and ensure the accuracy of the test results.

[0049] To prevent cold flow in the second sealing gasket 107 under clamping force, it is cleverly positioned within the cavity formed by the connector and the nut. This structural design provides effective support and constraint for the second sealing gasket 107, limiting its deformation range under pressure, thereby preventing cold flow, ensuring a long-term stable sealing effect, extending its service life, and reducing the risk of leakage due to seal failure.

[0050] The pressure stabilizing pipeline design in this application is scientific and reasonable. It is not only suitable for the hydrostatic test of air storage tank 8, but can also be widely used for hydrostatic tests of valves of various diameters and containers. As long as the test pressure of the valve does not exceed the rated pressure of the pressure stabilizing pipeline, the pipeline can operate stably and reliably, demonstrating good versatility and adaptability, and providing users with an efficient and convenient hydrostatic test solution.

[0051] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0052] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A pressure-stabilizing pipeline for hydrostatic testing of air storage tanks, characterized in that, It includes a pressure tank assembly (1), a pressure measuring tube (2), a pressure gauge (3), a first pipeline (4), a second pipeline (5), a first shut-off valve (6), and a second shut-off valve (7); The input end of the first shut-off valve (6) is connected to the output end of the pressure test pump (9), and the output end is connected to the input end of the first pipeline (4); The output end of the first pipe (4) is connected to the input end of the pressure tank assembly (1); The output end of the pressure stabilizing tank assembly (1) is connected to the input end of the second pipe (5); The output end of the second pipe (5) is connected to the input end of the second shut-off valve (7), and the output end of the second shut-off valve (7) is connected to the water inlet of the air storage tank (8); The pressure measuring tube (2) is a bent buffer structure. One end of the pressure measuring tube (2) is connected to the top of the pressure stabilizing tank assembly (1) through a delivery pipe, and the other end is detachably connected to the pressure gauge (3). The pressure measuring tube (2) is used to absorb liquid pressure fluctuations and flow shocks, and the pressure gauge (3) is used to monitor the pressure value inside the pressure stabilizing tank assembly (1) in real time.

2. The pressure-stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 1, characterized in that, The pressure stabilizing tank assembly (1) includes a tank body (11) and two end caps (12); The two end caps (12) are respectively welded to both ends of the tank body (11); The top of the tank (11) is fixedly connected to the end of the pressure measuring tube (2) away from the pressure gauge (3); The output end of the first pipe (4) and the input end of the second pipe (5) are respectively connected to the middle of the two end caps (12).

3. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 2, characterized in that, It also includes multiple support bases (102); Multiple support bases (102) are evenly distributed circumferentially along the bottom of the pressure tank assembly (1) to support the pressure tank assembly (1).

4. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 1, characterized in that, Both the first shut-off valve (6) and the second shut-off valve (7) are small-diameter shut-off valves.

5. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 1, characterized in that, The pressure measuring tube (2) has an "O" shaped spiral structure.

6. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 1, characterized in that, The input end of the first shut-off valve (6) and the output end of the test pressure pump (9), and the output end of the second shut-off valve (7) and the water inlet of the air storage tank (8) are all sealed together by a union nut (10) and a first sealing gasket (101).

7. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 3, characterized in that, It also includes multiple eye bolts (103), three-way connectors (104), and screw plugs (105); Multiple eye bolts (103) are symmetrically arranged on both sides of the corresponding support base (102) to provide lifting fulcrum when the pressure tank assembly (1) is placed on its side; The input end of the three-way valve (104) is connected to the output end of the second pipe (5), the first output end is connected to the input end of the second shut-off valve (7), and the second output end is provided with a threaded interface. The plug (105) is threaded to the second output end of the three-way body (104); When sewage needs to be discharged, tilt the pressure tank assembly (1) with the end cap (12) facing down using the lifting eye screw (103), and remove the screw plug (105) to discharge the sediment.

8. The pressure stabilizing pipeline for hydrostatic testing of air storage tanks according to claim 7, characterized in that, It also includes a filter component (106); The filter assembly (106) is disposed between the delivery pipe and the pressure measuring pipe (2).

9. The pressure stabilizing pipeline for hydrostatic testing of an air storage tank according to claim 8, characterized in that, The filter assembly (106) includes a filter screen (1062) and two pressure rings (1061); The filter screen (1062) is disposed between the end of the delivery pipe away from the pressure stabilizing tank assembly (1) and the connecting pipe of the pressure measuring pipe (2); The two pressure rings (1061) are respectively fixedly disposed at the top and bottom of the filter screen (1062); The inner wall of the pressure ring (1061) located at the top of the filter screen (1062) is provided with an annular groove.

10. The pressure stabilizing pipeline for hydrostatic testing of an air storage tank according to claim 8, characterized in that, It also includes a second sealing gasket (107); The second sealing gasket (107) is disposed between the flange face of the delivery pipe and the pressure measuring pipe (2).

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