Hydraulic sealing test device
By introducing accumulators and valve systems into the hydraulic seal test device, the damage caused by the slashed increase in oil pressure in the oil supply pipeline is solved, and a safer test process is achieved.
Patent Information
- Application Number
- CN202421781866.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The oil supply pipelines of existing hydraulic seal test devices lack protection devices, which can easily cause damage to hydraulic equipment or oil supply pipelines when the oil pressure increases sharply.
A hydraulic seal test device is designed, using an energy accumulator and a valve system. The energy accumulator is connected to the oil supply pipeline through a connecting pipe. The first valve is used to control the on-off to ensure that hydraulic oil is stored and the oil pressure is reduced when the oil pressure increases sharply.
It effectively avoids damage to the oil supply pipeline or hydraulic equipment when the oil pressure increases sharply, and closes the valve when necessary to prevent hydraulic oil leakage.
Smart Images
Figure CN222782837U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing tests, in particular to a hydraulic sealing test device. Background Art
[0002] Hydraulic drive equipment, such as hydraulic columns, hydraulic steering mechanisms and other equipment, need to undergo sealing tests before being put into use to ensure that the device or components can be used normally when put into use.
[0003] At present, when conducting sealing tests, most test benches are used to test the sealing of hydraulic equipment. The oil outlet and oil inlet of the hydraulic equipment are connected through the test bench, and hydraulic oil is introduced into the hydraulic equipment to drive the hydraulic equipment to simulate the situation when the hydraulic equipment is in use, so as to determine whether there is leakage in the hydraulic equipment.
[0004] In the prior art, most test benches have a simple structure, and generally only pump hydraulic oil into the hydraulic equipment through a hydraulic pump, an oil supply pipeline and an oil return pipeline to perform a sealing test. However, no protective device is provided in the entire oil supply pipeline or the oil return pipeline. For example, when a fault occurs, a sudden increase in the oil pressure in the oil supply pipeline can easily cause damage to the hydraulic equipment or the oil supply pipeline. Utility Model Content
[0005] The utility model aims to provide a hydraulic sealing test device to solve the problem in the prior art that the oil supply pipeline of the hydraulic sealing test device is not equipped with a protective device, and when the oil pressure in the oil supply pipeline increases sharply, the oil supply pipeline or hydraulic equipment is easily damaged.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A hydraulic sealing test device comprises a device body, a mounting cavity is arranged in the device body, an oil supply pipeline is arranged in the mounting cavity, one end of the oil supply pipeline is connected to an oil supply connection port on the side of the device body, a mounting frame is vertically arranged in the mounting cavity, an accumulator is installed on the mounting frame, the accumulator is connected to the oil supply pipeline through a first connecting pipe, and a first valve for controlling the on-off of the accumulator is arranged on the first connecting pipe.
[0008] A further technical solution is that the mounting frame includes a column, a horizontal plate and a vertical plate, the lower end of the column is connected to the bottom of the mounting cavity, the horizontal plate is horizontally connected to the side of the column, the vertical plate is vertically installed on the upper side of the horizontal plate, and the horizontal plate is provided with mounting holes that pass through the upper and lower sides. The lower end of the accumulator is installed in the mounting hole, and the side of the accumulator is fitted and fixed to the vertical plate.
[0009] A further technical solution is that a connecting plate is horizontally arranged on the lower side of the column, a through hole is arranged on the connecting plate passing through the upper and lower sides, a threaded hole is arranged at the bottom of the installation cavity, and when the through hole and the threaded hole are aligned, the connection is fixed by fixing bolts.
[0010] A further technical solution is that a servo valve and an oil return pipeline are also installed in the installation cavity, and two oil supply connection ports are set. The two oil supply connection ports are respectively connected to the two oil outlets of the servo valve, the oil supply pipeline is connected to the oil inlet end of the servo valve, and the oil return pipeline is connected to the oil return port of the servo valve.
[0011] A further technical solution is that a second valve for controlling the on-off of the oil return pipeline is provided on the oil return pipeline.
[0012] A further technical solution is that the oil supply pipeline is connected to the oil return pipeline through a second connecting pipe, and a pressure regulating valve is provided on the second connecting pipe.
[0013] A further technical solution is that the second connecting pipe is connected to the oil return pipeline through a third connecting pipe between the high-pressure regulating valve and the oil supply pipeline, and a throttle valve is provided on the third connecting pipe.
[0014] A further technical solution is that the control handles of the second valve, the pressure regulating valve and the throttle valve are all arranged on the upper side of the device body.
[0015] A further technical solution is that an oil supply pipeline pressure gauge and an oil return pipeline pressure gauge are installed on the upper side of the device body, the oil supply pipeline pressure gauge is connected to the oil supply pipeline, and the oil return pipeline pressure gauge is connected to the oil return pipeline.
[0016] A further technical solution is that the front side of the device body is provided with a front inspection port connected to the installation cavity, and a front inspection door for closing the front inspection port; the rear side of the device body is provided with a rear inspection port connected to the installation cavity, and a rear inspection door for closing the rear inspection port.
[0017] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. By providing an accumulator, when the oil pressure in the oil supply pipeline increases sharply, the accumulator can be used to store part of the hydraulic oil to reduce the oil pressure in the oil supply pipeline, thereby avoiding damage to the equipment being tested or the oil supply pipeline; 2. By providing a first valve, the on-off of the accumulator and the oil supply pipeline can be controlled, so that when replacement or maintenance is required, the first valve can be closed and the accumulator can be removed to avoid leakage of the hydraulic oil in the oil supply pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The utility model is a schematic diagram of the whole hydraulic sealing test device.
[0019] Figure 2The utility model is a schematic diagram of a hydraulic sealing test device with a front inspection port in an open state.
[0020] Figure 3 The utility model is a three-dimensional schematic diagram of an internal oil supply pipeline and an oil return pipeline of a hydraulic sealing test device.
[0021] Figure 4 The utility model is a rear view schematic diagram of an internal oil supply pipeline and an oil return pipeline of a hydraulic sealing test device.
[0022] Figure 5 It is a rear view of a hydraulic sealing test device of the utility model.
[0023] Icons: 1-device body, 2-installation cavity, 3-oil supply pipeline, 4-oil supply connection port, 5-installation frame, 6-accumulator, 7-first connecting pipe, 8-first valve, 9-column, 10-horizontal plate, 11-vertical plate, 12-installation hole, 13-connecting plate, 14-fixing bolt, 15-servo valve, 16-return oil pipeline, 17-second valve, 18-second connecting pipe, 19-pressure regulating valve, 20-third connecting pipe, 21-throttle valve, 22-oil supply pipeline pressure gauge, 23-oil return pipeline pressure gauge, 24-front inspection port, 25-front inspection door, 26-rear inspection port, 27-rear inspection door. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0025] Figures 1 to 5 Shown is an embodiment of the utility model.
[0026] Embodiment 1:
[0027] like Figure 1-4As shown, a hydraulic sealing test device includes a device body 1, a mounting cavity 2 is arranged in the device body 1, an oil supply pipeline 3 is arranged in the mounting cavity 2, one end of the oil supply pipeline 3 is connected to an oil supply connection port 4 on the side of the device body 1, a mounting frame 5 is vertically arranged in the mounting cavity 2, an accumulator 6 is installed on the mounting frame 5, the accumulator 6 is connected to the oil supply pipeline 3 through a first connecting pipe 7, and a first valve 8 for controlling the opening and closing of the accumulator 6 is arranged on the first connecting pipe 7. By arranging the accumulator 6, when the oil pressure of the oil supply pipeline 3 increases sharply, the accumulator 6 can be used to store part of the hydraulic oil to reduce the oil pressure of the oil supply pipeline 3, thereby avoiding damage to the equipment being tested or the oil supply pipeline 3. By arranging the first valve 8, the opening and closing of the accumulator 6 and the oil supply pipeline 3 can be controlled, so that when replacement or maintenance is required, the first valve 8 is closed, and the accumulator 6 is disassembled to avoid leakage of the hydraulic oil in the oil supply pipeline 3.
[0028] The mounting frame 5 includes a column 9, a horizontal plate 10 and a vertical plate 11. The lower end of the column 9 is connected to the bottom of the mounting cavity 2. The horizontal plate 10 is horizontally connected to the side of the column 9. The vertical plate 11 is vertically installed on the upper side of the horizontal plate 10. The horizontal plate 10 is provided with a mounting hole 12 that passes through the upper and lower sides. The lower end of the accumulator 6 is installed in the mounting hole 12, and the side of the accumulator 6 is fixed to the vertical plate 11. The column 9 can provide support for the horizontal plate 10 and the vertical plate 11. When the accumulator 6 is installed on the horizontal plate 10, the vertical plate 11 can stabilize the accumulator 6 to prevent the accumulator 6 from shaking due to impact during use. With the mounting hole 12, the lower end of the accumulator 6 can be fixed. The connection port of the accumulator 6 is placed below the horizontal plate 10 through the through hole and connected to the first connecting pipe 7 through the connector.
[0029] A connecting plate 13 is horizontally arranged at the lower side of the column 9, and a through hole is arranged on the connecting plate 13 that passes through the upper and lower sides. A threaded hole is arranged at the bottom of the installation cavity 2. When the through hole and the threaded hole are aligned, they are fixedly connected by fixing bolts 14. By setting the connecting plate 13, the lower end of the column 9 can be welded to the upper side of the connecting plate 13, and then the connecting plate 13 is fixed to the bottom of the installation cavity 2 by fixing bolts 14, so that the entire mounting frame 5 is fixed in the installation cavity 2. In this way, the installation is not only firm, but also easy to disassemble and repair.
[0030] Embodiment 2:
[0031] Based on the above embodiments, Figure 3 , 4As shown, a servo valve 15 and an oil return line 16 are also installed in the installation cavity 2, and two oil supply connection ports 4 are provided, and the two oil supply connection ports 4 are respectively connected to the two oil outlets of the servo valve 15, the oil supply line 3 is connected to the oil inlet end of the servo valve 15, and the oil return line 16 is connected to the oil return port of the servo valve 15. By providing the servo valve 15 and the oil return line 16, the servo valve 15 can be used to control the oil supply to the two oil supply connection ports 4 to make the hydraulic telescopic rod extend and retract, or the hydraulic steering mechanism perform steering and other functions. During the operation of the hydraulic rod or the hydraulic steering mechanism, its sealing performance is judged by observing whether there is hydraulic oil leakage at the active position, and after a period of testing, it is ensured that the sealing performance is intact before it is put into use.
[0032] The return oil pipeline 16 is provided with a second valve 17 for controlling its on and off. By providing the return oil pipeline 16 and the second valve 17, the second valve 17 needs to be opened when the entire test device is started to facilitate the hydraulic oil to return to the mailbox through the return oil pipeline 16 during the hydraulic column test. When testing the sealing performance of some equipment under pressure, it is only necessary to inject hydraulic oil unidirectionally through the oil supply pipeline 3 to perform a pressure sealing test. At this time, the return oil pipeline 16 is not needed and the second valve 17 can be closed.
[0033] The oil supply pipeline 3 is connected to the oil return pipeline 16 through the second connecting pipe 18, and a pressure regulating valve 19 is provided on the second connecting pipe 18. By providing the pressure regulating valve 19, when the pressure of the oil supply pipeline 3 is too high, the oil in the oil supply pipeline 3 is partially opened by opening the pressure regulating valve 19, so that part of the oil in the oil supply pipeline 3 directly enters the oil return pipeline 16 through the second connecting pipe 18, thereby reducing the pressure in the oil supply pipeline 3.
[0034] The second connecting pipe 18 is connected to the return oil pipeline 16 through the third connecting pipe 20 between the high-pressure regulating valve and the oil supply pipeline 3, and a throttle valve 21 is provided on the third connecting pipe 20. By providing the throttle valve 21, when the pressure of the return oil pipeline 16 is too high, part of the hydraulic oil is transported to the third connecting pipe 20 by means of the throttle valve 21, and the pressure of the return oil pipeline 16 is reduced by means of the stroke of the third connecting pipe 20, and the impact force of the return oil is reduced.
[0035] Embodiment 3:
[0036] like Figure 1 , 5 As shown, based on the above embodiment, the control handles of the second valve 17, the pressure regulating valve 19 and the throttle valve 21 are all arranged on the upper side of the device body 1. Such arrangement facilitates the operator to control the second valve 17, the pressure regulating valve 19 and the throttle valve 21.
[0037] An oil supply line pressure gauge 22 and an oil return line pressure gauge 23 are installed on the upper side of the device body 1. The oil supply line pressure gauge 22 is connected to the oil supply line 3, and the oil return line pressure gauge 23 is connected to the oil return line 16. By providing the oil supply line pressure gauge 22 and the oil return line pressure gauge 23, it is convenient for operators to monitor the pressure values of the oil supply line 3 and the oil return line 16.
[0038] The front side of the device body 1 is provided with a front inspection port 24 communicating with the installation cavity 2, and a front inspection door 25 for closing the front inspection port 24; the rear side of the device body 1 is provided with a rear inspection port 26 communicating with the installation cavity 2, and a rear inspection door 27 for closing the rear inspection port 26. By providing the front inspection port 24 and the rear inspection port 26, it is convenient for operators to repair the oil supply pipeline 3, the oil return pipeline 16, the accumulator 6, etc.
[0039] Instructions for use: When conducting a sealing test on hydraulic equipment, use two hydraulic hoses to connect the two oil supply connection ports 4 and the two connection ports on the hydraulic rod. After the connection is completed, start the external oil pump to pump the hydraulic oil into the oil supply pipeline 3, and use the servo valve 15 to control which oil supply connection port 4 the hydraulic oil enters, thereby controlling the extension and retraction of the hydraulic rod. During the extension and retraction process, the other oil supply connection port 4 of the hydraulic oil will recover the hydraulic oil in the hydraulic rod and enter the servo valve 15. Use the servo valve 15 to control the hydraulic oil to enter the return oil pipeline 16 to recover the hydraulic oil to the external oil tank.
[0040] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.
Claims
1. A hydraulic sealing test device, comprising a device body (1), wherein a mounting cavity (2) is arranged in the device body (1), wherein an oil supply pipeline (3) is arranged in the mounting cavity (2), wherein one end of the oil supply pipeline (3) is connected to an oil supply connection port (4) on a side of the device body (1), wherein: A mounting frame (5) is vertically arranged in the mounting cavity (2), an accumulator (6) is mounted on the mounting frame (5), the accumulator (6) is connected to the oil supply pipeline (3) via a first connecting pipe (7), and a first valve (8) for controlling the on-off of the first connecting pipe (7) is arranged on the first connecting pipe (7).
2. A hydraulic sealing test device according to claim 1, characterized in that: The mounting frame (5) comprises a column (9), a horizontal plate (10) and a vertical plate (11); the lower end of the column (9) is connected to the bottom of the mounting cavity (2); the horizontal plate (10) is horizontally connected to the side of the column (9); the vertical plate (11) is vertically mounted on the upper side of the horizontal plate (10); the horizontal plate (10) is provided with a mounting hole (12) passing through the upper and lower sides; the lower end of the accumulator (6) is mounted in the mounting hole (12); and the side of the accumulator (6) is fitted and fixed to the vertical plate (11).
3. A hydraulic sealing test device according to claim 2, characterized in that: A connecting plate (13) is horizontally arranged on the lower side of the column (9), and a through hole is arranged on the connecting plate (13) penetrating the upper and lower sides. A threaded hole is arranged at the bottom of the installation cavity (2), and when the through hole and the threaded hole are aligned, they are fixedly connected by fixing bolts (14).
4. A hydraulic sealing test device according to claim 1, characterized in that: A servo valve (15) and an oil return pipeline (16) are also installed in the installation cavity (2); the oil supply connection ports (4) are provided in two numbers; the two oil supply connection ports (4) are respectively connected to two oil outlets of the servo valve (15); the oil supply pipeline (3) is connected to the oil inlet end of the servo valve (15); and the oil return pipeline (16) is connected to the oil return port of the servo valve (15).
5. A hydraulic sealing test device according to claim 4, characterized in that: The oil return pipeline (16) is provided with a second valve (17) for controlling the on and off of the oil return pipeline (16).
6. A hydraulic sealing test device according to claim 5, characterized in that: The oil supply pipeline (3) is connected to the oil return pipeline (16) via a second connecting pipe (18), and a pressure regulating valve (19) is provided on the second connecting pipe (18).
7. A hydraulic sealing test device according to claim 6, characterized in that: The second connecting pipe (18) is connected to the oil return pipe (16) through a third connecting pipe (20) between the high-pressure regulating valve and the oil supply pipe (3), and a throttle valve (21) is provided on the third connecting pipe (20).
8. A hydraulic sealing test device according to claim 7, characterized in that: The control handles of the second valve (17), the pressure regulating valve (19) and the throttle valve (21) are all arranged on the upper side of the device body (1).
9. A hydraulic sealing test device according to claim 4, characterized in that: An oil supply pipeline pressure gauge (22) and an oil return pipeline pressure gauge (23) are installed on the upper side of the device body (1); the oil supply pipeline pressure gauge (22) is connected to the oil supply pipeline (3), and the oil return pipeline pressure gauge (23) is connected to the oil return pipeline (16).
10. A hydraulic sealing test device according to claim 1, characterized in that: The front side of the device body (1) is provided with a front inspection opening (24) communicating with the installation cavity (2), and a front inspection door (25) for closing the front inspection opening (24); the rear side of the device body (1) is provided with a rear inspection opening (26) communicating with the installation cavity (2), and a rear inspection door (27) for closing the rear inspection opening (26).