Multifunctional water pressure test equipment for gas cylinder liner
By designing an explosion-proof protective cover and a servo motor-driven cylinder liner switching system, the safety and efficiency issues of traditional equipment during testing were solved, enabling rapid switching and safety protection of the cylinder liner and improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI JINGYUAN XIHAI AUTOMOBILE IND CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-03
Smart Images

Figure CN224456431U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gas cylinder liner testing technology, and in particular to a multifunctional hydrostatic testing device for gas cylinder liners. Background Technology
[0002] The inner liner of a gas cylinder (such as composite material gas cylinders and breathing apparatus cylinders) is a core pressure-bearing component of a high-pressure vessel, and its safety and reliability are of paramount importance. Hydrostatic testing is a crucial step in gas cylinder manufacturing and periodic inspection, used to verify the inner liner's pressure resistance, sealing performance, and structural integrity to ensure compliance with standards.
[0003] Traditional gas cylinder liner hydrostatic testing equipment is not convenient for protection during testing. When the gas cylinder liner is subjected to excessive pressure, it is prone to bursting. Small fragments flying out can easily injure the test personnel. Moreover, it is not convenient to quickly switch samples in the gas cylinder liner, which affects the test efficiency. Utility Model Content
[0004] This application provides a multifunctional hydrostatic testing equipment for gas cylinder liners to solve the problems of inconvenience in providing protection during testing, the tendency for the gas cylinder liners to burst when subjected to excessive pressure, the risk of small fragments flying and injuring test personnel, and the inconvenience in quickly switching samples between gas cylinder liners, which affects test efficiency.
[0005] This application provides a multifunctional hydrostatic testing equipment for gas cylinder liners, including a test bench. An explosion-proof cover is fixedly installed in the middle of the top surface of the test bench. A servo motor is fixedly installed on one side of the test bench. A threaded screw is fixedly installed at the output end of the servo motor. A test plate is threadedly connected to the surface of the threaded screw. A fixing sleeve is fixedly installed on the top surface of the test plate. Electric push rods are fixedly installed on both sides of the outer surface of the fixing sleeve. A fixing plate is fixedly installed at the output end of the electric push rod. A gas cylinder liner is snapped onto one side of the fixing plate. A water storage tank is fixedly installed on the bottom surface of the test bench. A water pump is fixedly installed on one side of the water storage tank. A water supply hose is provided through the output end of the water pump. A water pressure sensor is fixedly installed on one side of the surface of the water supply hose.
[0006] Preferably, hydraulic rods are fixedly installed on both sides of the explosion-proof cover surface, and a gate is fixedly provided at the output end of the hydraulic rod. The hydraulic rod is used to drive the gate to open and close.
[0007] Preferably, limit grooves are provided on both sides of the top surface of the explosion-proof cover, and the gate is slidably disposed inside the limit grooves, which facilitates the sliding of the gate.
[0008] Preferably, a PLC controller is electrically connected to one side of the water pressure sensor, and a display is electrically connected to one side of the PLC controller. The display is fixedly installed on the outer surface of the explosion-proof cover and is used to display the water pressure inside the gas cylinder liner.
[0009] Preferably, a hydraulic cylinder is fixedly installed on one side of the inner wall of the explosion-proof cover, and a sealing plate is fixedly provided at the output end of the hydraulic cylinder. The sealing plate is fixedly connected to the water supply hose and is used to close the water inlet of the gas cylinder inner liner.
[0010] Preferably, a control valve is fixedly installed on one side of the water supply hose, and the input end of the water pump is disposed through the inner wall of the water storage tank. The water pump is used to transport water.
[0011] Preferably, a sliding groove is provided in the middle of the top surface of the test bench, and the test plate is slidably disposed inside the sliding groove. There are three sets of fixing sleeves, which are distributed sequentially along the axial direction. The fixing sleeves are used to fix the inner liner of the gas cylinder. Beneficial effects
[0012] Considering the difficulty in providing protection during testing, the risk of the gas cylinder liner bursting under excessive pressure, with small fragments potentially injuring personnel, and the inconvenience of quickly switching samples between gas cylinder liners, which affects testing efficiency, the hydraulic rod is opened to open the gate. The servo motor then drives the threaded screw to rotate, transporting the gas cylinder liner from the test plate into the explosion-proof cover. The gate is then closed, and the explosion-proof cover protects personnel during testing, preventing injury from sudden bursts of the gas cylinder liner.
[0013] The electric push rod drives the fixing plate to fix the gas cylinder liner. When one set of gas cylinder liners is being tested, personnel can disassemble the gas cylinder liners in other fixing sleeves and install the sample liner to be tested. This achieves the effect of facilitating quick switching of gas cylinder liner samples and improving test efficiency.
[0014] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the 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.
[0016] Figure 1 This is a schematic diagram of the overall structure of a multifunctional hydrostatic testing equipment for a gas cylinder liner according to this utility model.
[0017] Figure 2This is a schematic diagram of the test plate structure of a multifunctional hydrostatic testing equipment for a gas cylinder liner according to this utility model.
[0018] Figure 3 This is a schematic diagram of the fixing sleeve structure of a multifunctional hydrostatic testing equipment for a gas cylinder liner according to the present invention.
[0019] Figure 4 This is a schematic diagram of the water pump structure of a multifunctional hydrostatic testing equipment for a gas cylinder liner according to this utility model.
[0020] Figure 5 This is a schematic diagram of the explosion-proof protective cover structure of a multifunctional hydrostatic testing equipment for a gas cylinder liner according to this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Test bench; 2. Explosion-proof cover; 3. Servo motor; 4. Threaded screw; 5. Test plate; 6. Hydraulic rod; 7. Gate; 8. Display; 9. Hydraulic cylinder; 10. Fixing sleeve; 11. Electric push rod; 12. Fixing plate; 13. Gas cylinder inner liner; 14. Water storage tank; 15. Water pump; 16. Water supply hose; 17. Water pressure sensor; 18. Sealing plate; 19. Control valve. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 embodiments of this application, not all embodiments. 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.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0025] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0026] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0029] This utility model provides, for example Figure 1-5 The multifunctional hydrostatic testing equipment for a gas cylinder liner shown includes a test bench 1. An explosion-proof cover 2 is fixedly installed in the middle of the top surface of the test bench 1. A servo motor 3 is fixedly installed on one side of the test bench 1. A threaded screw 4 is fixedly installed at the output end of the servo motor 3. A test plate 5 is threadedly connected to the surface of the threaded screw 4. A fixing sleeve 10 is fixedly installed on the top surface of the test plate 5. Electric push rods 11 are fixedly installed on both sides of the outer surface of the fixing sleeve 10. A fixing plate 12 is fixedly installed at the output end of the electric push rod 11. A gas cylinder liner 13 is snapped onto one side of the fixing plate 12. A water storage tank 14 is fixedly installed on the bottom surface of the test bench 1. A water pump 15 is fixedly installed on one side of the water storage tank 14. A water supply hose 16 is provided through the output end of the water pump 15. A water pressure sensor 17 is fixedly installed on one side of the surface of the water supply hose 16.
[0030] The hydraulic rod 6 is opened, which drives the gate 7 to open. The servo motor 3 drives the threaded screw 4 to rotate, which transports the gas cylinder liner 13 on the test plate 5 into the explosion-proof cover 2. Then the gate 7 is closed. During the test, the explosion-proof cover 2 protects the personnel and prevents the gas cylinder liner 13 from suddenly bursting and injuring the personnel.
[0031] The electric push rod 11 drives the fixing plate 12 to fix the gas cylinder inner liner 13. When one set of gas cylinder inner liners 13 is being tested, the personnel can disassemble the gas cylinder inner liners 13 in other fixing sleeves 10 and install the sample inner liner to be tested, which achieves the effect of facilitating quick switching of gas cylinder inner liner 13 samples and improving test efficiency.
[0032] Hydraulic rods 6 are fixedly installed on both sides of the surface of the explosion-proof cover 2, and a gate 7 is fixedly installed at the output end of the hydraulic rods 6.
[0033] The hydraulic rod 6 drives the gate 7 to rise and fall, facilitating the opening and closing of the explosion-proof cover 2.
[0034] Limit grooves are provided on both sides of the top surface of the explosion-proof cover 2, and the gate 7 is slidably disposed inside the limit grooves.
[0035] The limiting groove facilitates the raising and lowering of the gate 7.
[0036] A PLC controller is electrically connected to one side of the water pressure sensor 17, and a display 8 is electrically connected to one side of the PLC controller. The display 8 is fixedly installed on the outer surface of the explosion-proof cover 2.
[0037] The water pressure sensor 17 senses the water pressure of the water supply hose 16 and displays it on the display 8 via the PLC controller.
[0038] An electric push rod 11 is fixedly installed on one side of the inner wall of the explosion-proof cover 2. A sealing plate 18 is fixedly installed at the output end of the electric push rod 11, and the sealing plate 18 is fixedly connected to the water supply hose 16.
[0039] When the electric push rod 11 is opened, the water supply hose 16 is inserted into the inlet of the gas cylinder inner liner 13, and the sealing plate 18 seals the inlet.
[0040] A control valve 19 is fixedly installed on one side of the surface of the water supply hose 16, and the input end of the water pump 15 is installed through the inner wall of the water storage tank 14.
[0041] Among them, the control valve 19 is used to control the opening and closing of the water supply hose 16.
[0042] A sliding groove is provided in the middle of the top surface of the test bench 1. The test plate 5 is slidably set inside the sliding groove. There are three sets of fixing sleeves 10, which are distributed sequentially along the axial direction.
[0043] The sliding groove facilitates the sliding of the test plate 5.
[0044] Working principle: When using this multi-functional hydrostatic testing equipment for gas cylinder liner, the electric push rod 11 drives the fixing plate 12 to fix the gas cylinder liner 13, the hydraulic rod 6 is opened, which drives the gate 7 to open, the servo motor 3 drives the threaded screw 4 to rotate, and the gas cylinder liner 13 on the test plate 5 is transported into the explosion-proof cover 2, and then the gate 7 is closed. During the test, the explosion-proof cover 2 protects the personnel and prevents the gas cylinder liner 13 from suddenly bursting and injuring the personnel.
[0045] Open the hydraulic cylinder 9, drive the water supply hose 16 to be inserted into the inlet of the gas cylinder inner liner 13, the sealing plate 18 closes the inlet, turn on the water pump 15, draw out the water source inside the water storage tank 14, and deliver it to the gas cylinder inner liner 13 through the water supply hose 16, then close the control valve 19, the water pressure sensor 17 senses the water pressure and displays it on the display 8.
[0046] When one set of gas cylinder liners 13 is being tested, personnel can disassemble the gas cylinder liners 13 in other fixing sleeves 10 and install the sample liners to be tested, which facilitates quick switching of gas cylinder liner 13 samples and improves testing efficiency.
[0047] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A multifunctional water pressure test equipment for cylinder liner, comprising a test table (1), characterized in that: An explosion-proof cover (2) is fixedly installed in the middle of the top surface of the test bench (1). A servo motor (3) is fixedly installed on one side of the test bench (1). A threaded screw (4) is fixedly installed at the output end of the servo motor (3). A test plate (5) is threadedly connected to the surface of the threaded screw (4). A fixing sleeve (10) is fixedly installed on the top surface of the test plate (5). Electric push rods (11) are fixedly installed on both sides of the outer surface of the fixing sleeve (10). A fixing plate (12) is fixedly installed at the output end of the electric push rod (11). A gas cylinder inner liner (13) is snapped onto one side of the fixing plate (12). A water storage tank (14) is fixedly installed on the bottom surface of the test bench (1). A water pump (15) is fixedly installed on one side of the water storage tank (14). A water supply hose (16) is provided through the output end of the water pump (15). A water pressure sensor (17) is fixedly installed on one side of the surface of the water supply hose (16).
2. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 1, characterized in that: Hydraulic rods (6) are fixedly installed on both sides of the surface of the explosion-proof cover (2), and a gate (7) is fixedly installed at the output end of the hydraulic rods (6).
3. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 2, characterized in that: Limiting grooves are provided on both sides of the top surface of the explosion-proof cover (2), and the gate (7) is slidably disposed inside the limiting groove.
4. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 1, characterized in that: The water pressure sensor (17) is electrically connected to a PLC controller on one side, and a display (8) is electrically connected to a display on one side of the PLC controller. The display (8) is fixedly installed on the outer surface of the explosion-proof cover (2).
5. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 1, characterized in that: A hydraulic cylinder (9) is fixedly installed on one side of the inner wall of the explosion-proof cover (2). A sealing plate (18) is fixedly installed at the output end of the hydraulic cylinder (9). The sealing plate (18) is fixedly connected to the water supply hose (16).
6. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 1, characterized in that: A control valve (19) is fixedly installed on one side of the surface of the water supply hose (16), and the input end of the water pump (15) is installed through the inner wall of the water storage tank (14).
7. The multifunctional water pressure test equipment for the inner liner of a gas cylinder according to claim 1, characterized in that: The test bench (1) has a sliding groove in the middle of its top surface. The test plate (5) is slidably disposed inside the sliding groove. There are three sets of fixed sleeves (10), and the three sets of fixed sleeves (10) are distributed sequentially along the axial direction.