CN108240371B - Oil cylinder oil leakage detection method and detection device - Google Patents
Oil cylinder oil leakage detection method and detection device Download PDFInfo
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- CN108240371B CN108240371B CN201711476015.5A CN201711476015A CN108240371B CN 108240371 B CN108240371 B CN 108240371B CN 201711476015 A CN201711476015 A CN 201711476015A CN 108240371 B CN108240371 B CN 108240371B
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- oil cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a method and a device for detecting oil leakage of an oil cylinder, wherein the method can effectively and accurately detect whether the oil cylinder leaks oil or not through observing the motion state of the oil cylinder and whether oil stains exist on the surface of the oil cylinder or not and through pressure detection, and the detection device is matched with the oil cylinder.
Description
Technical Field
The invention relates to the field of machinery, in particular to a method and a device for detecting oil leakage of an oil cylinder.
Background
The oil cylinder is a hydraulic executing element which converts hydraulic energy into mechanical energy and does linear reciprocating motion. Has the characteristics of simple structure and reliable operation. When the oil cylinder is used for realizing reciprocating motion, a speed reducing device can be omitted, a transmission gap is avoided, and the motion is stable, so that the device is widely applied to hydraulic systems of various machines. The output force of the oil cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston; the cylinder basically consists of a cylinder barrel, a cylinder cover, a piston rod and a sealing device.
After the oil cylinder is used for a long time, oil leakage can occur, the oil cylinder can cause core pulling to be free or signals to be not in place, the processing and the production of equipment can be affected, a great amount of time is required for replacing the oil cylinder, and the production period is affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the main purpose of the invention is to overcome the defects of the prior art, and discloses a method for detecting oil leakage of an oil cylinder, which comprises the following steps:
step 1), connecting an oil inlet and an oil outlet of a detection oil cylinder with an oil pipe, continuously supplying oil and returning oil to the detection oil cylinder, and observing the working state of a piston rod to judge whether oil leakage exists;
step 2) when detecting the movement of the oil cylinder, observing whether oil leakage exists at the joint of the oil cylinder;
step 3) pressurizing and detecting the detection oil cylinder, wherein the pressure lasts for 15-30s, the oil pressure change condition is observed, and when the oil pressure is unchanged, the phenomenon that oil leakage exists inside is indicated; when the pressure is reduced, the oil leakage position is indicated.
Further, in the step 2), the oil absorbing paper is coated at the joint of the oil cylinder.
Further, step 3) has a pressure duration of 25s.
Further, in the step 3), pressurizing detection is performed on two oil inlet and outlet ports of the detection oil cylinder respectively.
Further, the oil pressure in step 3) was observed by an oil pressure gauge.
The detection device comprises a high-pressure device, an oil tank, a reversing valve and a connecting pipeline, wherein the high-pressure device is connected with the oil tank, an oil inlet and an oil return port of the reversing valve are respectively connected with the high-pressure device and the oil tank, and the connecting pipeline is provided with two groups which are respectively connected with two interfaces of the reversing valve;
the connecting pipeline comprises an oil pipe, an oil pressure detection device and a valve, wherein the oil pipe, the oil pressure detection device and the valve are sequentially connected, and the valve is connected with the reversing valve.
Further, the hydraulic control system further comprises a pressure regulating valve, wherein the pressure regulating valve regulates the oil pressure output by the high-pressure device.
Further, the high-pressure device is an oil pump.
Further, the reversing valve is an electromagnetic reversing valve.
Further, the oil pressure detection device is an oil pressure gauge.
The invention has the beneficial effects that:
the oil cylinder leakage detection device is simple in structure and convenient to detect, can effectively and rapidly detect whether the oil cylinder leaks oil, saves a large amount of manpower, and ensures the reliability of the use of the oil cylinder and the normal use of the oil cylinder through regular detection.
Drawings
FIG. 1 is a schematic diagram of a device for detecting oil leakage of an oil cylinder according to the present invention;
FIG. 2 is a schematic diagram of a connecting pipeline;
the reference numerals are as follows:
1. high-pressure device 2, oil tank, 3, switching-over valve, 4, connecting line, 5, pressure regulating valve, 41, oil pipe, 42, oil pressure detection device, 43, valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention discloses a method for detecting oil leakage of an oil cylinder, which comprises the following steps:
step 1), connecting an oil inlet and an oil outlet of a detection oil cylinder with an oil pipe, continuously supplying oil and returning oil to the detection oil cylinder, continuously reciprocating a piston, observing the moving state of the piston rod to judge whether oil leakage exists, and if the piston rod is slow in movement or does not act, indicating that the oil leakage exists, otherwise, if the piston rod is fast in reaction and can move in place, indicating that the oil leakage does not exist;
step 2) when detecting the movement of the oil cylinder, the piston rod reciprocates, whether oil leakage exists at the joint of the oil cylinder or not is observed, and if oil stain exists on the surface or the oil leakage exists, the oil leakage is indicated; preferably, the oil absorbing paper can be laid at the joint, and the oil leakage phenomenon is indicated when the oil stain exists by checking the oil stain condition on the oil absorbing paper, otherwise, the oil stain does not exist on the oil absorbing paper, and the oil leakage is indicated. The oil leakage point can be rapidly determined by setting the oil absorbing paper.
And 3) performing pressurization detection on the detection oil cylinder, and preferably, performing pressurization detection on two oil inlet and outlet ports of the oil cylinder respectively. Pressurizing the detected oil pressure by a detection device, stopping pressurizing when the pressure reaches a preset pressure, and keeping the pressure in the detection oil cylinder for at least 15s, preferably waiting for 25s; and whether the oil pressure changes or not is measured, and the pressure value in the oil cylinder can be read by setting a pressure gauge. When the pressure value is unchanged, the oil leakage is avoided, and when the pressure value is reduced, the oil leakage phenomenon is avoided.
The pressurization detection is further described below: and (3) filling oil into an oil inlet and outlet of the oil cylinder to pressurize, moving a piston rod to the position of the maximum position, stopping pressurizing when the oil is pressurized to the specified pressure, keeping the pressure in the oil cylinder, standing for 15-30 seconds, reading a pressure value, and if oil leakage exists, reducing the pressure. After detection, the other oil inlet and outlet is filled with oil, the piston rod returns to the initial position, the pressure is similarly increased, the pressure is maintained after the pressure reaches the specified pressure, and the pressure value is read to judge after the pressure is kept stand for 15-30 s.
According to the oil cylinder oil leakage detection method, as shown in fig. 1-2, a detection device comprises a high-pressure device 1, an oil tank 2, a reversing valve 3 and a connecting pipeline 4, wherein the high-pressure device 1 is connected with the oil tank 2, an oil inlet and an oil return port of the reversing valve 3 are respectively connected with the high-pressure device 1 and the oil tank 2, and the connecting pipeline 4 is provided with two groups which are respectively connected with two interfaces of the reversing valve 3; the high-pressure device 1 comprises an oil pump and a motor, wherein the motor drives the oil pump to squeeze hydraulic oil in the oil tank 2, and the hydraulic oil is introduced into the detection oil cylinder from the connecting pipeline 4 through the reversing valve 3. The reversing valve 3 can be an electromagnetic reversing valve, and oil supply of the two groups of connecting pipelines 4 is controlled through the reversing valve, so that the operation of the oil cylinder is changed.
The connecting pipeline 4 comprises an oil pipe 41, an oil pressure detection device 42 and a valve 43, the oil pipe 41, the oil pressure detection device 42 and the valve 43 are sequentially connected, and the valve 43 is connected with the reversing valve 3. The hydraulic oil enters the detection cylinder through the oil pipe 41 after passing through the valve, and the oil pressure detection device 42 can be a pressure gauge, so that the oil pressure change condition can be visually observed.
In the present embodiment, a pressure regulating valve 5 is further included, the pressure regulating valve 5 is used to regulate the oil pressure output from the high-pressure device 2, and preferably, the pressure regulating valve 5 is provided between the reversing valve 3 and the high-pressure device 2.
It should be noted that the reversing valve is known in the art, and will be understood and appreciated by those skilled in the art, and will not be described in detail herein.
The detection device of the present invention is further explained in conjunction with the above detection method:
the two groups of connecting pipelines 4 are respectively connected with two oil inlet and outlet ports of the detection oil cylinder, the high-pressure device 1 is started, the pressurized oil in the oil tank 2 is sent into the reversing valve 3 and then enters the detection oil cylinder from the connecting pipelines 4, and the output pressure is changed through the pressure regulating valve 5. And under the action of the reversing valve 3, the detection oil cylinder is driven to reciprocate, and whether the piston rod moves in place is observed.
And lay the oil absorbing paper in the seam of the hydro-cylinder, after the hydro-cylinder is through many times reciprocating motion, observe the oil absorbing paper from this, can confirm whether there is the oil leak condition, if there is the oil leak, can confirm the oil leak point fast.
When the oil leakage phenomenon does not exist in the detection, the reversing valve 3 is controlled to not change the oil way, namely, only one oil inlet and outlet of the oil cylinder is filled with oil, the piston rod is positioned at the maximum position, the piston rod is pressurized, after the pressure is added to the specified pressure, the valves 43 of the two groups of connecting pipelines 4 are closed, the pressure value of the pressure detection device 42 is read, the pressure value is read again after the pressure detection device is kept stand for 15-30 seconds, the pressure value is compared with the front pressure value and the back pressure value, when the pressure value is reduced, the oil leakage phenomenon is indicated, and when the oil leakage phenomenon does not exist, the oil leakage phenomenon does not exist. And then the reversing valve 3 is controlled again to change the direction, so that the oil cylinder is positioned at the initial position, and oil leakage detection is carried out on the oil cylinder by the same method. It should be noted that the read pressure value is the value of the pressure detecting means 42 on the connecting line 4 for supplying the cylinder with oil in the present state.
The invention has the beneficial effects that:
the oil cylinder leakage detection device is simple in structure and convenient to detect, can effectively and rapidly detect whether the oil cylinder leaks oil, saves a large amount of manpower, and ensures the reliability of the use of the oil cylinder and the normal use of the oil cylinder through regular detection.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention; modifications and equivalent substitutions are intended to be included in the scope of the claims without departing from the spirit and scope of the present invention.
Claims (7)
1. The detection device for the oil leakage detection method of the oil cylinder is characterized by comprising a high-pressure device, an oil tank, a reversing valve and a connecting pipeline, wherein the high-pressure device is connected with the oil tank, an oil inlet and an oil return port of the reversing valve are respectively connected with the high-pressure device and the oil tank, and the connecting pipeline is provided with two groups which are respectively connected with two interfaces of the reversing valve;
the connecting pipeline comprises an oil pipe, an oil pressure detection device and a valve, wherein the oil pipe, the oil pressure detection device and the valve are connected in sequence, and the valve is connected with the reversing valve;
the detection method comprises the following steps:
step 1), connecting an oil inlet and an oil outlet of a detection oil cylinder with an oil pipe, continuously supplying oil and returning oil to the detection oil cylinder, and observing the working state of a piston rod to judge whether oil leakage exists;
step 2) when detecting the movement of the oil cylinder, observing whether oil leakage exists at the joint of the oil cylinder or not;
step 3) pressurizing and detecting the detection oil cylinder, wherein the pressure lasts for 15-30s, the oil pressure change condition is observed, and when the oil pressure is unchanged, the phenomenon that oil leakage exists inside is indicated; when the pressure is reduced, the oil leakage position is indicated;
step 2), applying oil absorbing paper at the joint of the detection cylinder;
and 3) respectively carrying out pressurization detection on the two oil inlet and outlet ports of the detection oil cylinder.
2. A test device according to claim 1, wherein the duration of the pressure in step 3) is 25s.
3. A test device according to claim 1, wherein the oil pressure in step 3) is observed by means of an oil pressure gauge.
4. The apparatus according to claim 1, further comprising a pressure regulating valve that regulates the oil pressure output from the high-pressure device.
5. The device of claim 1, wherein the high pressure device is an oil pump.
6. The apparatus of claim 1, wherein the reversing valve is an electromagnetic reversing valve.
7. The device of claim 1, wherein the oil pressure sensing device is an oil pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476015.5A CN108240371B (en) | 2017-12-29 | 2017-12-29 | Oil cylinder oil leakage detection method and detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476015.5A CN108240371B (en) | 2017-12-29 | 2017-12-29 | Oil cylinder oil leakage detection method and detection device |
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| CN108240371A CN108240371A (en) | 2018-07-03 |
| CN108240371B true CN108240371B (en) | 2023-09-05 |
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| CN201711476015.5A Active CN108240371B (en) | 2017-12-29 | 2017-12-29 | Oil cylinder oil leakage detection method and detection device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404365A (en) * | 2018-12-14 | 2019-03-01 | 龙工(福建)液压有限公司 | A kind of method of gas-liquid mixed detection hydraulic cylinder |
| CN110360181A (en) * | 2019-07-28 | 2019-10-22 | 天津市双象工程液压件有限责任公司 | A kind of cylinder cap and the hydraulic cylinder for being equipped with this cylinder cap |
| CN110332274A (en) * | 2019-07-28 | 2019-10-15 | 天津市双象工程液压件有限责任公司 | A kind of hydraulic cylinder with permeability alarm function |
| CN110555979A (en) * | 2019-07-28 | 2019-12-10 | 天津市双象工程液压件有限责任公司 | Sealed oil leakage warning structure |
| CN111498712A (en) * | 2020-04-26 | 2020-08-07 | 南宁学院 | Oil cylinder detection and lifting device |
| CN113323938B (en) * | 2021-05-24 | 2022-07-12 | 山东福阳液压科技有限公司 | Hydraulic cylinder with device for automatically detecting and treating leakage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108987A (en) * | 2011-03-30 | 2011-06-29 | 苏州东南碳制品有限公司 | Oil cylinder |
| CN205047582U (en) * | 2015-10-22 | 2016-02-24 | 山东科技大学 | Leak testing system in compound pneumatic cylinder |
-
2017
- 2017-12-29 CN CN201711476015.5A patent/CN108240371B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108987A (en) * | 2011-03-30 | 2011-06-29 | 苏州东南碳制品有限公司 | Oil cylinder |
| CN205047582U (en) * | 2015-10-22 | 2016-02-24 | 山东科技大学 | Leak testing system in compound pneumatic cylinder |
Non-Patent Citations (1)
| Title |
|---|
| 马明东 ; .液压缸性能检测方法及检测结果分析.工程机械与维修.2017,(第01期),46-47. * |
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