High-pressure hose long-term sealing test device

Abstract

The utility model provides a long-term sealing test device for a high-pressure hose. The long-term sealing test device comprises a movable test box, a valve block assembly and an oil box assembly, the movable test box is formed by welding a framework and an aluminum profile wall plate, the valve block assembly and the oil box assembly are located in the movable test box, and the valve block assembly comprises a valve block, a pressure accumulator arranged on the valve block, an oil inlet connector, an oil inlet valve, a one-way valve, an overflow valve, a pressure gauge connector and a plurality of hose connectors. And the oil box assembly is used for collecting waste oil discharged from the outlet of the overflow valve and residual oil in the high-pressure hose during disassembly. The side wall of the test box is provided with an oil inlet port communicated with the oil inlet connector on the valve block and used for being connected with an external hydraulic source. After test pressure supply is in place, the test box is separated from the hydraulic source, and pressure maintaining adjustment is conducted through the pressure accumulator. By adopting the test device, the sealing test of a plurality of high-pressure hoses can be completed through one-time operation, the production efficiency is improved, other production tests cannot be delayed by occupying a hydraulic source for a long time, and the utilization rate of the hydraulic source is improved.

Description

Technical Field

[0001] This utility model belongs to the field of aviation maintenance technology, specifically relating to a long-term sealing test device for high-pressure hoses. Background Technology

[0002] During the manufacturing process of high-pressure hoses for a certain type of aircraft, a long-term sealing test is required after the hoses are pressurized. Currently, the test method involves directly pressurizing the hoses using a standard test bench (hydraulic power source). However, since long-term sealing tests typically last for over 100 hours, the standard test bench needs to maintain pressure for an extended period, resulting in its prolonged occupancy and impacting other production tests. Therefore, there is an urgent need to design a new, low-cost sealing test device. Utility Model Content

[0003] The purpose of this invention is to solve the problems of low production efficiency and long-term occupation of hydraulic power source in existing high-pressure hose sealing test methods, and to provide a long-term high-pressure hose sealing test device.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A long-term sealing test device for high-pressure hoses includes a hydraulic power source, a movable test chamber, a valve block assembly, and an oil box assembly; the valve block assembly and the oil box assembly are located inside the movable test chamber; the valve block assembly includes a valve block, an accumulator disposed on the valve block, an oil inlet connector, an oil inlet valve, a check valve, an overflow valve, a pressure gauge connector, and several hose connectors.

[0006] The accumulator is used to buffer pressure pulsations during pressure supply and to replenish pressure; the oil inlet connector is connected to the oil inlet port on the side wall of the movable test chamber to connect with an external hydraulic source to provide the pressure source required for the high-pressure hose sealing test;

[0007] The pressure gauge connector is connected to a pressure gauge, which is used to monitor the test pressure in real time.

[0008] The hose connector is used to connect to the high-pressure hose being tested;

[0009] The oil box assembly is used to collect the waste oil discharged from the overflow valve drain port and the residual oil in the high-pressure hose when the high-pressure hose is disassembled after the test.

[0010] Furthermore, the oil box assembly includes an oil box, an oil filter plate, and an oil drain switch. The oil filter plate is installed inside the oil box and does not contact the inner wall of the oil box bottom plate, and is used to filter out impurities in the waste oil; the oil drain switch is disposed on the oil box bottom plate and located at one end of the outer wall of the bottom plate.

[0011] Furthermore, the base plate includes a flat plate and an inclined plate connected to the flat plate, the inclined plate gradually tilting upward from the connection position; the oil drain switch is disposed on the outer wall of the flat plate.

[0012] Furthermore, the oil box is formed by welding the base plate and several side plates together, and the top of the oil filter plate has a movable handle.

[0013] Furthermore, the movable test chamber includes a frame assembly and an aluminum profile frame assembly mounted on the upper part of the frame assembly; the frame assembly includes a frame, an aluminum profile wall panel, a valve block mounting plate, and a wheel mounting plate; the aluminum profile wall panel is welded and fixed to the surface of the frame; the valve block mounting plate is fixed to the middle frame of the movable test chamber, and the wheel mounting plate is fixed to the bottom frame of the movable test chamber, respectively for mounting the valve block assembly and the wheels.

[0014] Furthermore, the skeleton as a whole has an L-shaped frame structure, and the aluminum profile frame assembly is installed at the upper notch of the skeleton.

[0015] Furthermore, the oil inlet port is located on the outer side wall of the upper end of the skeleton assembly, and the oil inlet port is connected to the hydraulic source through a connecting pipe.

[0016] Furthermore, the pressure gauge is disposed on the outer side wall of the upper end of the skeleton assembly.

[0017] Furthermore, the aluminum profile frame assembly includes an aluminum profile frame, a glass panel installed on the side wall of the aluminum profile frame, and an openable door panel assembly; the glass panel facilitates personnel to observe the test conditions inside the movable test chamber.

[0018] Furthermore, it also includes several needle valves, which are installed at one end of the high-pressure hose under test and are used to purge the air from the high-pressure hose before the test; the other end of the high-pressure hose is connected to the hose connector on the valve block assembly.

[0019] The advantages of this utility model are:

[0020] 1. The sealing test device of this utility model includes a movable test chamber, a valve block assembly, and an oil box assembly. The valve block assembly and the oil box assembly are integrated in the movable test chamber, saving test space and design costs. In addition, the valve block assembly has multiple hose connectors, which can complete the sealing test of multiple high-pressure hoses in one operation, thus improving production efficiency.

[0021] 2. When a sealing test is required, the test device of this utility model is connected to the hydraulic source through the oil inlet port on the side wall of the test chamber to provide a pressure source. After the pressure is supplied, the connection between the hydraulic source and the test device is disconnected, and the pressure is maintained and regulated by the accumulator in the valve block assembly. Furthermore, since the high-pressure hose sealing test is not a frequently performed test, when not in use, the sealing test device of this utility model can be separated from the hydraulic source and placed separately, which solves the problem that the test bench (hydraulic source) is occupied for a long time in the traditional sealing test and cannot be used for other production tests.

[0022] 3. The valve block assembly of this utility model is designed with an overflow valve. During the sealing test, when the pressure reaches the set sealing test pressure, the overflow valve will automatically open and release excess hydraulic oil to prevent the valve block assembly from being damaged due to excessive pressure.

[0023] 4. When the high-pressure hose bursts abnormally during the test, the aluminum profile wall panel in this utility model plays a good protective role, ensuring the safety of personnel in the test area. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the high-pressure hose sealing test device of this utility model;

[0025] Figure 2 This is a front view of the high-pressure hose sealing test device of this utility model;

[0026] Figure 3 This is a top view of the high-pressure hose sealing test device of this utility model with the top cover open;

[0027] Figure 4 This is a left view of the high-pressure hose sealing test device of this utility model with the left cover open;

[0028] Figure 5 This is a schematic diagram of the skeleton component in this utility model;

[0029] Figure 6 This is a schematic diagram of the aluminum profile frame assembly structure in this utility model;

[0030] Figure 7 This is a schematic diagram of the valve block assembly structure in this utility model. Figure 1 ;

[0031] Figure 8 This is a schematic diagram of the valve block assembly structure in this utility model. Figure 2 ;

[0032] Figure 9 This is a schematic diagram of the oil box assembly structure in this utility model. Figure 1 ;

[0033] Figure 10 This is a schematic diagram of the oil box assembly structure in this utility model. Figure 2 ;

[0034] Figure 11 This is a hydraulic schematic diagram of the high-pressure hose sealing test device of this utility model.

[0035] Explanation of reference numerals in the attached drawings: 1-Mobile test chamber, 2-Valve block assembly, 3-Oil box assembly, 4-Frame assembly, 5-Aluminum profile frame assembly, 6-Frame, 7-Aluminum profile wall panel, 8-Valve block mounting plate, 9-Wheel mounting plate, 10-Aluminum profile frame, 11-Glass panel, 1201-First openable door panel assembly, 1202-Second openable door panel assembly, 13-Relief valve, 14-Relief valve drain port, 15-Hose connector, 16-Inlet valve, 17-Inlet connector, 18-Check valve, 19-Valve block, 20-Accumulator, 21-Oil box, 22-Oil filter plate, 23-Drain switch, 24-Moving handle, 25-Inlet port, 26-Hydraulic source, 27-Needle valve, 28-Wheel, 29-Pressure gauge, 30-High pressure hose, 31-Pressure gauge connector, 32-Cover plate. Detailed Implementation

[0036] The embodiments of the present invention are described in detail below. These embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] Reference Figures 1-4 This embodiment provides a long-term sealing test device for high-pressure hoses, including a movable test chamber 1, a valve block assembly 2, and an oil box assembly 3, which are located inside the movable test chamber. The valve block assembly 2 includes a valve block 19, an accumulator 20 mounted on the valve block, an oil inlet connector 17, an oil inlet valve 16, a check valve 18, a relief valve 13, a pressure gauge connector 31, and several hose connectors 15. The oil inlet connector 17 is connected to an oil inlet port 25 on the side wall of the movable test chamber 1 to connect to an external hydraulic source 26 to provide a pressure source for the high-pressure hose sealing test. The pressure gauge connector 31 is connected to a pressure gauge 29, which is used to monitor the pressure in the hydraulic system in real time. The oil box assembly 3 is used to collect waste oil discharged from the relief valve drain port 14 and residual oil in the high-pressure hose when it is disassembled after the test.

[0038] Reference Figure 1 and Figure 5The movable test chamber 1 includes a frame assembly 4 and an aluminum profile frame assembly 5 mounted on the upper part of the frame assembly. The frame assembly 4 includes a frame 6, aluminum profile wall panels 7, valve block mounting plates 8, and wheel mounting plates 9. The frame 6 is an L-shaped frame structure welded from square profiles. The aluminum profile wall panels 7 are welded and fixed to the surface of the frame to form a sealed chamber. Four wheel mounting plates 9 are welded to the four corners of the bottom of the frame for mounting wheels 28 to facilitate moving the test chamber. A valve block mounting plate 8 is fixed in the middle of the frame for fixing and mounting the valve block assembly 2. The side wall of the frame assembly has a pressure gauge mounting hole and an oil inlet port 25. The oil inlet port 25 is connected to the oil inlet connector 17 on the valve block assembly to realize the connection between the oil inlet connector and the external hydraulic source. The lower side wall of the frame assembly has a first openable door panel assembly 1201 for easy operation of the oil release switch 23; specifically, the door panel of the first openable door panel assembly 1201 is made of aluminum profile.

[0039] Reference Figure 6 The aluminum profile frame assembly 5 is installed at the L-shaped notch on the upper part of the frame 6. The aluminum profile frame assembly 5 includes an aluminum profile frame 10, a glass panel 11, and a second openable door panel assembly 1202. The aluminum profile frame 10 is a cuboid frame formed by bolting multiple aluminum profiles together, and its bottom is installed on the frame 6. The front and rear sides of the aluminum profile frame 10 are used to install the second openable door panel assembly 1202. The left side is used to install an aluminum profile wall panel, and the right side is used to install the glass panel 11. The glass panel allows the operator to easily observe the test conditions. The second openable door panel assembly 1202 uses a glass door panel, which facilitates the operator's observation of the test chamber and also allows the operator to easily install and remove high-pressure hoses, operate and adjust the overflow valve and oil inlet valve.

[0040] Aluminum profiles are used as the wall surface in the skeleton assembly and aluminum profile frame group, which plays a protective role during the test and ensures the safety of the test personnel in the event of abnormal bursting of the high-pressure hose.

[0041] Reference Figure 7 and Figure 8The valve block assembly 2 is the hydraulic control system of the sealing test device of this utility model. An accumulator 20 is vertically mounted on top of the valve block 19 to maintain pressure during the test, ensuring reliable test pressure. An overflow valve 13 is horizontally mounted at one end of the valve block. Multiple hose connectors 15 are provided in the middle of one side of the valve block 19 for connecting to the high-pressure hose under test, enabling multiple high-pressure hoses to be sealed in a single test, thus improving production efficiency. This embodiment has three hose connectors 15. An oil inlet valve 16 and an oil inlet connector 17 are provided at the other end of the valve block. The oil inlet connector 17 is connected to the oil inlet port 25 on the side wall of the test chamber via a hydraulic oil pipe. A one-way valve mounting hole is provided on the other side of the valve block, in which a one-way valve 18 is installed to prevent backflow of oil. A cover plate 32 is also installed at the end of the one-way valve mounting hole. The cover plate 32 is fixed to the side wall of the valve block with bolts to prevent external dust and other contaminants from entering the one-way valve and affecting its normal operation. The other side of the valve block also has a pressure gauge connector 31, which is connected to a pressure gauge 29 to monitor the pressure in the hydraulic control system in real time.

[0042] Reference Figure 9 and Figure 10 The oil box assembly includes an oil box 21, an oil filter plate 22, and an oil drain switch 23. The oil box 21 is formed by welding a base plate to several side plates. The oil filter plate 22 is installed inside the oil box but does not contact the inner wall of the base plate; it is used to filter impurities from the waste oil. Specifically, the top of the oil filter plate 22 has two movable handles 24, which are rotatably mounted on the oil filter plate for easy removal after filtration. The base plate includes a flat plate and an inclined plate connected to it. The inclined plate gradually slopes upwards from the connection point, allowing the waste oil to flow onto the flat plate and be discharged through the oil drain switch 23. The oil drain switch 23 is installed on the outer wall of the flat plate and is used to drain the waste oil collected in the oil box.

[0043] It also includes several needle valves 27, which are installed at one end of the high-pressure hose under test and are used to purge the air from the high-pressure hose before the test; the other end of the high-pressure hose is connected to the hose connector on the valve block assembly.

[0044] Reference Figure 11 The diagram below shows the schematic of the test apparatus. During the test, first open the needle valve 27 installed at the end of the high-pressure hose to purge the air from the hose, then close the needle valve. Connect the hydraulic power source 26 to the oil inlet port 25 on the side wall of the test chamber, and start the hydraulic power source to pressurize the test apparatus. When the pressure reaches the set test pressure, turn off the hydraulic power source to stop the pressure supply. Close the oil inlet valve 16, and use the one-way valve 18 on the valve block to prevent backflow of oil. Then disconnect the test chamber from the hydraulic power source through the oil inlet port 25. During the test, observe the pressure value on the pressure gauge. When the pressure is too high, operate the overflow valve 13 to discharge excess oil for safe pressure relief. Alternatively, adjust the accumulator 20 to buffer pressure pulsations or perform appropriate pressure replenishment.

[0045] This utility model sealing test device has a compact structure, occupies little space, does not occupy the original hydraulic source for a long time, improves the utilization rate of the hydraulic source, and greatly improves the production efficiency of high-pressure hoses compared with the original method.

[0046] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A long-term sealing test device for high-pressure hoses, comprising a hydraulic power source, characterized in that, It also includes a movable test chamber, valve block assembly, and oil box assembly; The valve block assembly and the oil box assembly are located inside the movable test chamber; The valve block assembly includes a valve block, an accumulator disposed on the valve block, an oil inlet connector, an oil inlet valve, a check valve, an overflow valve, a pressure gauge connector, and several hose connectors; The accumulator is used to buffer pressure pulsations during the pressure supply and to replenish pressure. The oil inlet connector is connected to the oil inlet port on the side wall of the movable test chamber to connect with an external hydraulic source to provide the pressure source required for the high-pressure hose sealing test; The pressure gauge connector is connected to a pressure gauge, which is used to monitor the test pressure in real time. The hose connector is used to connect to the high-pressure hose being tested; The oil box assembly is used to collect waste oil discharged from the overflow valve drain port and residual oil in the high-pressure hose when the high-pressure hose is disassembled after the test.

2. The high-pressure hose long-term sealing test device according to claim 1, characterized in that, The oil box assembly includes an oil box, an oil filter plate, and an oil drain switch; The filter plate is installed inside the oil box and does not contact the inner wall of the bottom plate of the oil box, and is used to filter out impurities in the waste oil. The oil drain switch is mounted on the bottom plate of the oil box and is located at one end of the outer wall of the bottom plate.

3. The high-pressure hose long-term sealing test device according to claim 2, characterized in that, The base plate includes a flat plate and an inclined plate connected to the flat plate, the inclined plate gradually tilting upward from the connection position; The oil drain switch is located on the outer wall of the flat plate.

4. The long-term sealing test device for high-pressure hoses according to claim 3, characterized in that, The oil box is formed by welding the base plate and several side plates together. The oil filter plate has a movable handle on top.

5. The long-term sealing test device for high-pressure hoses according to claim 1, characterized in that, The movable test chamber includes a skeleton assembly and an aluminum profile frame assembly mounted on the upper part of the skeleton assembly; The frame assembly includes a frame, aluminum profile wall panels, valve block mounting plates, and wheel mounting plates; The aluminum profile wall panel is welded and fixed to the surface of the frame; The valve block mounting plate is fixed to the middle frame of the movable test chamber, and the wheel mounting plate is fixed to the bottom frame of the movable test chamber, respectively for mounting the valve block assembly and the wheels.

6. The long-term sealing test device for high-pressure hoses according to claim 5, characterized in that, The skeleton has an overall L-shaped frame structure, and the aluminum profile frame assembly is installed at the upper notch of the skeleton.

7. The long-term sealing test device for high-pressure hoses according to claim 6, characterized in that, The oil inlet port is located on the outer side wall of the upper end of the skeleton assembly, and the oil inlet port is connected to the hydraulic source through a connecting pipe.

8. The long-term sealing test device for high-pressure hoses according to claim 7, characterized in that, The pressure gauge is located on the outer wall of the upper end of the skeleton assembly.

9. The long-term sealing test device for high-pressure hoses according to claim 5, characterized in that, The aluminum profile frame assembly includes an aluminum profile frame, a glass panel installed on the side wall of the aluminum profile frame, and an openable door panel assembly; the glass panel facilitates personnel to observe the test conditions inside the movable test chamber.

10. A long-term sealing test device for high-pressure hoses according to any one of claims 1-9, characterized in that, It also includes several needle valves, which are installed at one end of the high-pressure hose under test and are used to purge the air from the high-pressure hose before the test; the other end of the high-pressure hose is connected to the hose connector on the valve block assembly.

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