Hydraulic cylinder leakage detection device

Abstract

The utility model discloses a hydraulic cylinder leakage detection device, and relates to the technical field of hydraulic cylinder detection and maintenance. The device comprises a detection assembly, the detection assembly is composed of a detection valve block, an oil inlet tee joint and an oil return tee joint, the detection assembly is connected with an oil inlet hole and an oil return hole of a hydraulic cylinder connecting valve block, one oil channel of the detection valve block is connected with a first port of the oil inlet tee joint, and a second port of the oil inlet tee joint is connected with an oil inlet pipe. The oil inlet pipe is connected with an oil outlet of the hydraulic station, a third port of the oil inlet tee joint is sealed, another oil duct of the detection valve block is connected with a first port of the oil return tee joint, a second port of the oil return tee joint is connected with an oil return pressure gauge and an oil return pipe, and the oil return pipe is connected with an oil inlet of the hydraulic station. And a third port of the oil return tee joint is connected with an exhaust valve. The hydraulic cylinder does not need to be dismantled, a single cylinder body can be subjected to a pressing test on site through a hydraulic station, the detection efficiency is high, and the detection process is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder detection and maintenance, in particular to a hydraulic cylinder leakage detection device. Background Art

[0002] As a quantitative indicator in national and industry standards, internal leakage of hydraulic cylinders is effective evidence to determine whether the hydraulic cylinders meet normal use requirements.

[0003] Currently, the detection of internal leakage in hydraulic cylinders is done by determining whether there is leakage through the difference in oil flowing through the inlet and outlet ports of the hydraulic cylinder. However, this method often requires the hydraulic cylinder to be dismantled and sent to a professional test bench for pressure testing. The measurement process is cumbersome and it is not possible to install the detection components at the work site for leakage detection. Utility Model Content

[0004] In response to the above technical problems, the utility model provides a hydraulic cylinder leakage detection device, which is used to solve the problem that the existing hydraulic cylinder internal leakage detection method is cumbersome and cannot be installed at the work site to perform leakage detection.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0006] A hydraulic cylinder leakage detection device includes a detection component, which consists of a detection valve block, an oil inlet tee and an oil return tee. The detection component is connected to the oil inlet and return holes of the hydraulic cylinder connection valve block, one oil channel of the detection valve block is connected to the first port of the oil inlet tee, the second port of the oil inlet tee is connected to an oil inlet pipe, the oil inlet pipe is connected to the oil outlet of the hydraulic station, the third port of the oil inlet tee is sealed and closed, another oil channel of the detection valve block is connected to the first port of the oil return tee, the second port of the oil return tee is respectively connected to an oil return pressure gauge and an oil return pipe, the oil return pipe is connected to the oil inlet of the hydraulic station, and the third port of the oil return tee is connected to an exhaust valve.

[0007] Furthermore, the second port of the oil inlet tee is connected to the oil inlet pipe via a hydraulic straight-through joint, and the second port of the oil return tee is connected to the oil return pipe via a hydraulic straight-through joint.

[0008] Furthermore, a sealing ring is cooperatively connected between the first port of the oil inlet tee and the detection valve block, and a sealing ring is cooperatively connected between the first port of the oil return tee and the detection valve block.

[0009] Furthermore, a handle is installed at the control end of the exhaust valve.

[0010] Furthermore, the hydraulic station is designed with pressure regulation and reversing functions.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model has a simple structure and is easy to use. It does not require the hydraulic cylinder to be dismantled. A single cylinder can be pressure tested on site through a hydraulic station. The oil return condition can be easily observed through the exhaust valve and the indication of the oil return pressure gauge. Leakage in the hydraulic cylinder can be judged more intuitively, with high detection efficiency and a simple detection process.

[0013] 2. The hydraulic straight-through head not only ensures good pressure resistance and sealing during the testing process, but is also easy to install and maintain, and can be applied to most hydraulic testing occasions;

[0014] 3. The sealing ring ensures good sealing between the first port of the oil inlet tee and the first port of the oil return tee and the detection valve block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the detection component in the utility model.

[0017] In the picture:

[0018] 1-Hydraulic station, 2-Hydraulic cylinder, 3-Oil return pressure gauge, 4-Exhaust valve, 5-Handle, 6-Oil return tee, 10-Oil inlet tee, 13-Detection valve block, 14-Fixing bolt, 15-Sealing ring, 16-Oil inlet pipe, 17-Oil return pipe. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0020] A hydraulic cylinder leakage detection device includes a detection component, which consists of a detection valve block 13, an oil inlet tee 10 and an oil return tee 6. The detection component is connected to the oil inlet and return holes of the hydraulic cylinder connection valve block. One oil channel of the detection valve block 13 is connected to the first port of the oil inlet tee 10. The second port of the oil inlet tee 10 is connected to an oil inlet pipe 16. The oil inlet pipe 16 is connected to the oil outlet of the hydraulic station 1. The third port of the oil inlet tee 10 is sealed. Another oil channel of the detection valve block 13 is connected to the first port of the oil return tee 6. The oil return tee 6 is connected to the oil inlet, the second port of the oil return tee 6 is respectively connected to the oil return pressure gauge 3 and the oil return pipe 17, the oil return pipe 17 is connected to the oil inlet of the hydraulic station 1, and the third port of the oil return tee 6 is connected to the exhaust valve 4. The utility model has a simple structure and is easy to use. There is no need to dismantle the hydraulic cylinder 2. A single cylinder body can be pressure tested on site through the hydraulic station 1. The exhaust valve 4 and the indication of the oil return pressure gauge 3 can be used to conveniently observe the oil return situation. The leakage in the hydraulic cylinder 2 can be judged more intuitively, the detection efficiency is high, and the detection process is simple.

[0021] The second port of the oil inlet tee 10 is connected to the oil inlet pipe 16 via a hydraulic straight-through joint, and the second port of the oil return tee 6 is connected to the oil return pipe 17 via a hydraulic straight-through joint. The hydraulic straight-through joint not only ensures good pressure resistance and sealing during the detection process, but also is easy to install and maintain, and can be applied to most hydraulic detection occasions.

[0022] A sealing ring 15 is connected between the first port of the oil inlet tee 10 and the detection valve block 13, and a sealing ring 15 is connected between the first port of the oil return tee 6 and the detection valve block 13. The sealing ring 15 ensures good sealing between the first port of the oil inlet tee 10 and the first port of the oil return tee 6 and the detection valve block 13.

[0023] A handle 5 is installed at the control end of the exhaust valve 4. The operator controls the exhaust valve 4 through the handle 5, which saves effort and does not require additional operating tools.

[0024] Example 1:

[0025] Connect the detection valve block 13 and the hydraulic cylinder connecting valve block through the fixing bolts 14, and pressurize the hydraulic station 1 through the oil inlet pipe 16. After the hydraulic cylinder 2 finishes its action, the exhaust valve 4 can be opened by manually operating the handle 5 to exhaust. After the exhaust is completed, the exhaust valve 4 handle 5 can be closed, and the oil inlet pressure of the hydraulic station 1 can be continued to be adjusted for testing. At this time, the return oil pressure can be judged by observing the return oil pressure gauge 3, or the exhaust valve 4 can be opened to observe whether there is internal leakage of return oil.

[0026] The hydraulic station 1 is designed with pressure regulation and reversing functions. After the test in one direction is completed, there is no need to make other adjustments to the detection valve block 13 and the oil inlet pipe 16 and return pipe 17. The direction of the oil inlet and return pipes 17 can be switched from the hydraulic station 1 to test the other chamber of the hydraulic cylinder 2. During the test, the exhaust valve 4 needs to be closed. After adjusting the pressure to a certain pressure, the system only needs to maintain the pressure. By observing the value of the pressure gauge, the pressure maintaining capacity of the cylinder can be judged, thereby determining whether there is internal leakage.

[0027] Example 2

[0028] When testing another chamber, the detection valve block 13 can also be removed, and the left and right oil channels of the detection valve block 13 can be swapped and then installed. After the swap, the above-mentioned first detection method is still used. After the system is tested to the rated pressure and maintained, it can be judged through the pressure indication of the return oil pipe 17. If the pressure indication is low or abnormal, the exhaust auxiliary observation can be opened to intuitively judge whether there is internal leakage between the cylinders.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydraulic cylinder leakage detection device, characterized in that: The invention comprises a detection component, which consists of a detection valve block (13), an oil inlet tee (10) and an oil return tee (6). The detection component is connected to the oil inlet and return holes of the hydraulic cylinder connection valve block. An oil passage of the detection valve block (13) is connected to the first port of the oil inlet tee (10). The second port of the oil inlet tee (10) is connected to an oil inlet pipe (16). The oil inlet pipe (16) is connected to the oil outlet of the hydraulic station (1). The third port of the oil inlet tee (10) is sealed. Another oil passage of the detection valve block (13) is connected to the first port of the oil return tee (6). The second port of the oil return tee (6) is respectively connected to an oil return pressure gauge (3) and an oil return pipe (17). The oil return pipe (17) is connected to the oil inlet of the hydraulic station (1). The third port of the oil return tee (6) is connected to an exhaust valve (4).

2. A hydraulic cylinder leakage detection device according to claim 1, characterized in that: The second opening of the oil inlet tee (10) is connected to the oil inlet pipe (16) via a hydraulic straight-through joint, and the second opening of the oil return tee (6) is connected to the oil return pipe (17) via a hydraulic straight-through joint.

3. The hydraulic cylinder leakage detection device according to claim 2, characterized in that: A sealing ring (15) is connected between the first opening of the oil inlet tee (10) and the detection valve block (13), and a sealing ring (15) is connected between the first opening of the oil return tee (6) and the detection valve block (13).

4. The hydraulic cylinder leakage detection device according to claim 3, characterized in that: A handle (5) is mounted on the control end of the exhaust valve (4).

5. The hydraulic cylinder leakage detection device according to claim 1, characterized in that: The hydraulic station (1) is designed with pressure regulating and reversing functions.

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