CN110243554A - A kind of hydraulic cylinder tightness measuring device and its application - Google Patents
A kind of hydraulic cylinder tightness measuring device and its application Download PDFInfo
- Publication number
- CN110243554A CN110243554A CN201910403353.9A CN201910403353A CN110243554A CN 110243554 A CN110243554 A CN 110243554A CN 201910403353 A CN201910403353 A CN 201910403353A CN 110243554 A CN110243554 A CN 110243554A
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- oil
- way valve
- hydraulic control
- pipe
- hydraulic
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to oil cylinder pressure testing device field more particularly to a kind of hydraulic cylinder tightness measuring device and its applications.Described includes: the first oil pipe, the second oil pipe, four groups of hydraulic control one-way valves, the first oil return pipe, the first Fuel Tanking Unit, the second oil return pipe and the second Fuel Tanking Unit, and the circuit of closure is sequentially formed between the first oil pipe, hydraulic cylinder, the second oil pipe, fuel tank and the first oil pipe；First hydraulic control one-way valve is arranged on the first oil pipe；First oil return pipe connects the first Fuel Tanking Unit and the first oil pipe；Third hydraulic control one-way valve is arranged on the first oil return pipe；Second hydraulic control one-way valve is arranged on the second oil pipe, and the set-up mode of the second hydraulic control one-way valve is identical as the first hydraulic control one-way valve, and the second oil return pipe connects the second Fuel Tanking Unit and the second oil pipe；4th hydraulic control one-way valve is arranged on the second oil return pipe.The present invention is efficiently avoided the sundries during pressure testing in oil pipe and is flowed into oil cylinder by setting hydraulic control one-way valve and two groups of fuel reserve tanks, the influence to oil cylinder cleannes.
Description
Technical field
The invention belongs to oil cylinder pressure testing device field more particularly to a kind of hydraulic cylinder tightness measuring device and its answer
With.
Background technique
Information disclosed in background of invention is merely intended to increase the understanding to general background of the present invention, without inevitable quilt
It is considered as and recognizes or imply in any form that information composition has become the prior art well known to persons skilled in the art.
Oil cylinder pressure testing is primarily to detector sealing performance, currently, oil cylinder pressure testing still mainly uses traditional pressure testing
Device, for example, a kind of hydraulic cylinder detection method of patent document CN201810164042.7, detects pressure testing in existing hydraulic cylinder
Threeway is connect after the solenoid directional control valve of platform on oil return pipe, access valve is followed by oil return box all the way, and another way connects accumulator and makees load source, real
The intracavitary artificial addition controllable pressure of the correspondence type of present oil cylinder carries out fictitious load；Tested oil cylinder is first mounted on pressure testing when operation
Platform simultaneously sets energy storage pressure value；It turns off ball valve and starts hydraulic pump, hydraulic oil squeezes into oil cylinder ante-chamber through hydraulic pump.Patent text
It offers CN201120073116.X and discloses a kind of pressure withstanding test device for hydraulic oil cylinder, including high-pressure ball valve, pressure gauge.Internal pressure circle
Cylinder upper vessel portion installs four high-pressure ball valves and a pressure gauge, and a high-pressure ball valve is installed in lower part.Power hydraulic test pump by into
Oil rubber hose is connect with a high-pressure ball valve.D high-pressure ball valve is connected by the A mouth of pipeline sebific duct and double-act-ing hydraulic J-Horner.Double acting liquid
The B mouth of oil cylinder is connect by oil return sebific duct with the oil storage pool of power hydraulic test pump.Internal pressure cylinder lower vessel portion is fixed with a support
Frame.
However, the present inventor has found in pressure testing: this kind of device and other common test devices generally contain only one
A main valve enters the oil in oil cylinder in cyclic process, since oil pipe is too long, can not pass through in each pressure testing loop cycle
Main valve empties back into fuel tank, this part oil remains in oil pipe, will be used repeatedly, be saved bit by bit in oil in subsequent test
Sundries in pipe flows into oil cylinder, causes oil cylinder cleannes up to standard, therefore, it is necessary to further research be able to solve it is above-mentioned
The oil cylinder pressure testing device of problem.
Summary of the invention
For above-mentioned problems of the prior art, the present invention is intended to provide a kind of hydraulic cylinder performing leak test fills
It sets and its applies, the oil during pressure testing in oil pipe is avoided to be recycled and the sundries in oil pipe is caused to flow into oil cylinder, it is right
Oil cylinder cleannes adversely affect.
An object of the present disclosure provides a kind of hydraulic cylinder tightness measuring device.
Second purpose of the invention, provides the application of the hydraulic cylinder tightness measuring device.
For achieving the above object, the invention discloses following technical proposals:
Firstly, the invention discloses a kind of hydraulic cylinder tightness measuring devices, comprising: the first oil pipe, the second oil pipe,
One hydraulic control one-way valve, the second hydraulic control one-way valve, third hydraulic control one-way valve, the 4th hydraulic control one-way valve, the first oil return pipe, the first oil storage
Device, the second oil return pipe and the second Fuel Tanking Unit, in which:
First oil pipe is for being connected to fuel tank and hydraulic cylinder, and second oil pipe is for being connected to fuel tank and hydraulic oil
Cylinder, thus make the circuit that closure is sequentially formed between the first oil pipe, hydraulic cylinder, the second oil pipe, fuel tank and the first oil pipe, with
It is tested convenient for the oil of fuel tank is transported to being sealed property in hydraulic cylinder by oil pipe.
First hydraulic control one-way valve is arranged on the first oil pipe, and the set-up mode of the first hydraulic control one-way valve is in oil pipe
Oil hydraulic cylinder can only be flowed to from fuel tank, and cannot be back through the first hydraulic control one-way valve.
One end of first oil return pipe is connected to the first Fuel Tanking Unit, and the other end of the first oil return pipe and the first oil pipe connect
It is logical, and the connection position is between the first hydraulic control one-way valve and hydraulic cylinder.
The third hydraulic control one-way valve is arranged on the first oil return pipe, and the set-up mode of third hydraulic control one-way valve is first
Oil in oil return pipe can only flow in the first Fuel Tanking Unit, and cannot be back through third hydraulic control one-way valve.
Second hydraulic control one-way valve is arranged on the second oil pipe, and the set-up mode of the second hydraulic control one-way valve and the first liquid
Control check valve is identical, and one end of second oil return pipe is connected to the second Fuel Tanking Unit, the other end of the second oil return pipe and second
Oil pipe connection, and the connection position is between the second hydraulic control one-way valve and hydraulic cylinder.
4th hydraulic control one-way valve is arranged on the second oil return pipe, and the set-up mode and third of the 4th hydraulic control one-way valve
Hydraulic control one-way valve is identical.
As further technical solution, it is arranged on the first oil pipe between the first hydraulic control one-way valve and hydraulic cylinder
There is first pressure detection device.
As further technical solution, it is arranged on the second oil pipe between the second hydraulic control one-way valve and hydraulic cylinder
There is second pressure detection device.
As further technical solution, first and second pressure-detecting device is pressure gauge, for detecting oil
Oil pressure variation in pipe, judges the sealing performance of hydraulic cylinder.
As further technical solution, oil is provided on the first oil pipe between the first hydraulic control one-way valve and fuel tank
Pump, in order to enter the oil pump in fuel tank in hydraulic cylinder.
As further technical solution, oil is provided on the second oil pipe between the second hydraulic control one-way valve and fuel tank
Pump, in order to enter the oil pump in fuel tank in hydraulic cylinder.
As further technical solution, it is tightly connected between first oil pipe and hydraulic cylinder by hose.
As further technical solution, it is tightly connected between second oil pipe and hydraulic cylinder by hose.
Secondly, the present invention discloses application of the hydraulic cylinder tightness measuring device in cylinder seal detection.
Compared with prior art, the present invention achieves following the utility model has the advantages that the present invention passes through four groups of hydraulic control one-way valves of setting
With two groups of fuel reserve tanks, efficiently avoids the oil during pressure testing in oil pipe and recycled and the sundries in oil pipe is caused to flow into
In oil cylinder, oil cylinder cleannes are adversely affected, principle are as follows:, first will be oily when carrying out hydraulic cylinder performing leak test
Test in case is sent into hydraulic cylinder with oil by the first oil pipe and the first hydraulic control one-way valve；Then pass through the second oil pipe and the
Two hydraulic control one-way valves are sent into test oil into hydraulic cylinder, at this point, the oil in hydraulic cylinder is gradually extruded away return the
One oil pipe, due to the unidirectional logical oil effect of the first hydraulic control one-way valve, the oil for returning to the first oil pipe can not pass through the first fluid-control one-way
Valve, but entered in the first Fuel Tanking Unit by the third hydraulic control one-way valve on the first oil return pipe, into the first Fuel Tanking Unit
Oil can not be returned again in the first oil pipe under the constraint of third hydraulic control one-way valve；Then, continue the test oil in fuel tank
It is sent into hydraulic cylinder by the first oil pipe and the first hydraulic control one-way valve, the oil in hydraulic cylinder is squeezed into away the second oil of return
Guan Zhong, and then enter in the second Fuel Tanking Unit；It repeats the above process and is tested repeatedly, until performing leak test is completed, in this way,
Have during the test and squeezed into Fuel Tanking Unit by the oil (even if used oil) of test by the fresh oil in fuel tank, without staying
Recycled in oil pipe, and it is used oil present in sundries also entered in Fuel Tanking Unit therewith, without repeatedly into
Hydraulic cylinder out；Simultaneously as oil of the connecting portion of Fuel Tanking Unit and oil pipe in hydraulic cylinder, hydraulic cylinder can and
When be imported into Fuel Tanking Unit.When therefore, using test device of the invention, do not make before being all into the oil in hydraulic cylinder
Used fresh oil, clean no-sundries, to will not be impacted to the cleannes of hydraulic cylinder.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is the structural schematic diagram of hydraulic cylinder tightness measuring device in the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of hydraulic cylinder tightness measuring device in the embodiment of the present invention 2.
Attached drawing acceptance of the bid note respectively represents: the first oil pipe of 1-, the second oil pipe of 2-, the first hydraulic control one-way valve of 3-, the second hydraulic control of 4-
Check valve, 5- third hydraulic control one-way valve, the 4th hydraulic control one-way valve of 6-, the first oil return pipe of 7-, the first Fuel Tanking Unit of 8-, 9- second
Oil return pipe, the second Fuel Tanking Unit of 10-, 11- fuel tank, 12- hydraulic cylinder, 13- first pressure detection device, the inspection of 14- second pressure
Survey device.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As described in background, the part oil remained in oil cylinder pressure testing in oil pipe will be anti-in subsequent test
It is multiple to use, lead to save bit by bit the sundries in oil pipe and flow into oil cylinder, to influence oil cylinder cleannes.Therefore, the present invention proposes one
Kind hydraulic cylinder tightness measuring device；The present invention is further illustrated now in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of hydraulic cylinder tightness measuring device, with reference to Fig. 1, described device include: the first oil pipe 1, the second oil pipe 2,
First hydraulic control one-way valve 3, the second hydraulic control one-way valve 4, third hydraulic control one-way valve 5, the 4th hydraulic control one-way valve 6, the first oil return pipe 7,
First Fuel Tanking Unit 8, the second oil return pipe 9 and the second Fuel Tanking Unit 10, in which:
First oil pipe 1 is for being connected to fuel tank 11 and hydraulic cylinder 12, and second oil pipe 2 is for being connected to fuel tank and liquid
Compressing cylinder, to make sequentially to be formed between the first oil pipe 1, hydraulic cylinder 12, the second oil pipe 2, fuel tank 11 and the first oil pipe 1
The circuit of closure is tested in order to which the oil of fuel tank is transported to being sealed property in hydraulic cylinder by oil pipe.
First hydraulic control one-way valve 3 is arranged on the first oil pipe 1, and the set-up mode of the first hydraulic control one-way valve 3 is oil
Oil in pipe can only flow to hydraulic cylinder from fuel tank, and cannot be back through the first hydraulic control one-way valve 3, such as arrow institute in figure
Show.
One end of first oil return pipe 7 is connected to the first Fuel Tanking Unit 8, the other end of the first oil return pipe 7 and the first oil
Pipe 1 is connected to, and the connection position is between the first hydraulic control one-way valve 3 and hydraulic cylinder.
The third hydraulic control one-way valve 5 is arranged on the first oil return pipe 7, and the set-up mode of third hydraulic control one-way valve 5 is
Oil in first oil return pipe 7 can only flow in the first Fuel Tanking Unit 8, and cannot such as scheme back through third hydraulic control one-way valve 5
Shown in middle arrow.
Second hydraulic control one-way valve 4 is arranged on the second oil pipe 2, and the set-up mode of the second hydraulic control one-way valve 4 and the
One hydraulic control one-way valve 3 is identical, and one end of second oil return pipe 9 is connected to the second Fuel Tanking Unit 10, the second oil return pipe 9 it is another
One end is connected to the second oil pipe 2, and the connection position is between the second hydraulic control one-way valve 4 and hydraulic cylinder.
4th hydraulic control one-way valve 6 is arranged on the second oil return pipe 9, and the set-up mode of the 4th hydraulic control one-way valve 6 with
Third hydraulic control one-way valve 5 is identical.
Embodiment 2
A kind of hydraulic cylinder tightness measuring device, with embodiment 1, difference is: referring to Fig. 2, is located at the first hydraulic control list
It is provided with first pressure detection device 13 on the first oil pipe 1 between valve 3 and hydraulic cylinder 12, is located at the second hydraulic control one-way valve
Second pressure detection device 14 is provided on the second oil pipe 2 between 4 and hydraulic cylinder 12.
Embodiment 3
A kind of hydraulic cylinder tightness measuring device, with embodiment 2, difference is: the pressure-detecting device is pressure
Table judges the sealing performance of hydraulic cylinder for detecting the variation of the oil pressure in oil pipe.
Embodiment 4
A kind of hydraulic cylinder tightness measuring device, with embodiment 1, difference is: being located at the first hydraulic control one-way valve 3 and oil
It is provided with oil pump on the first oil pipe 1 between case 11, in order to enter the oil pump in fuel tank 11 in hydraulic cylinder 12；Positioned at second
It is provided with oil pump on the second oil pipe 2 between hydraulic control one-way valve 4 and fuel tank 11, in order to which the oil pump in fuel tank 11 is entered hydraulic oil
In cylinder 12.
Embodiment 5
A kind of hydraulic cylinder tightness measuring device, with embodiment 1, difference is: first oil pipe 1 and hydraulic oil
It is tightly connected between cylinder 12 by hose；It is tightly connected between second oil pipe 2 and hydraulic cylinder 12 by hose.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of hydraulic cylinder tightness measuring device characterized by comprising the first oil pipe, the second oil pipe, the first hydraulic control list
To valve, the second hydraulic control one-way valve, third hydraulic control one-way valve, the 4th hydraulic control one-way valve, the first oil return pipe, the first Fuel Tanking Unit,
Two oil return pipes and the second Fuel Tanking Unit, in which:
First oil pipe is used to be connected to fuel tank and hydraulic cylinder for being connected to fuel tank and hydraulic cylinder, second oil pipe, from
And make the circuit that closure is sequentially formed between the first oil pipe, hydraulic cylinder, the second oil pipe, fuel tank and the first oil pipe；
First hydraulic control one-way valve is arranged on the first oil pipe, and the set-up mode of the first hydraulic control one-way valve is the oil in oil pipe
Hydraulic cylinder can only be flowed to from fuel tank, and cannot be back through the first hydraulic control one-way valve；
One end of first oil return pipe is connected to the first Fuel Tanking Unit, and the other end of the first oil return pipe is connected to the first oil pipe,
And the connection position is between the first hydraulic control one-way valve and hydraulic cylinder；
The third hydraulic control one-way valve is arranged on the first oil return pipe, and the set-up mode of third hydraulic control one-way valve is the first oil return
Oil in pipe can only flow in the first Fuel Tanking Unit, and cannot be back through third hydraulic control one-way valve；
Second hydraulic control one-way valve is arranged on the second oil pipe, and the set-up mode of the second hydraulic control one-way valve and the first hydraulic control list
Identical to valve, one end of second oil return pipe is connected to the second Fuel Tanking Unit, the other end of the second oil return pipe and the second oil pipe
Connection, and the connection position is between the second hydraulic control one-way valve and hydraulic cylinder；
4th hydraulic control one-way valve is arranged on the second oil return pipe, and the set-up mode of the 4th hydraulic control one-way valve and third hydraulic control
Check valve is identical.
2. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that be located at the first hydraulic control one-way valve and
First pressure detection device is provided on the first oil pipe between hydraulic cylinder.
3. hydraulic cylinder tightness measuring device as claimed in claim 2, which is characterized in that the first pressure detection device
For pressure gauge.
4. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that be located at the second hydraulic control one-way valve and
Second pressure detection device is provided on the second oil pipe between hydraulic cylinder.
5. hydraulic cylinder tightness measuring device as claimed in claim 4, which is characterized in that the second pressure detection device
For pressure gauge.
6. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that be located at the first hydraulic control one-way valve and
Oil pump is provided on the first oil pipe between fuel tank.
7. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that be located at the second hydraulic control one-way valve and
Oil pump is provided on the second oil pipe between fuel tank.
8. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that first oil pipe and hydraulic oil
It is tightly connected between cylinder by hose.
9. hydraulic cylinder tightness measuring device as described in claim 1, which is characterized in that second oil pipe and hydraulic oil
It is tightly connected between cylinder by hose.
10. such as the described in any item hydraulic cylinder tightness measuring devices of claim 1-9 answering in cylinder seal detection
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403353.9A CN110243554B (en) | 2019-05-15 | 2019-05-15 | Hydraulic cylinder sealing performance testing device and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403353.9A CN110243554B (en) | 2019-05-15 | 2019-05-15 | Hydraulic cylinder sealing performance testing device and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110243554A true CN110243554A (en) | 2019-09-17 |
| CN110243554B CN110243554B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910403353.9A Active CN110243554B (en) | 2019-05-15 | 2019-05-15 | Hydraulic cylinder sealing performance testing device and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202418111U (en) * | 2012-01-19 | 2012-09-05 | 东洋机电(中国)有限公司 | Hydraulic performance experimental device for cylinder |
| CN103233945A (en) * | 2013-05-08 | 2013-08-07 | 布柯玛蓄能器（天津）有限公司 | Oil pressure test bed of energy accumulator |
| CN103410810A (en) * | 2013-08-13 | 2013-11-27 | 湖南特力液压有限公司 | Test equipment for testing durability of sealing element of hydraulic cylinder |
| CN207393598U (en) * | 2017-09-25 | 2018-05-22 | 佛山伊之密精密橡胶机械有限公司 | A kind of novel differential cylinder structure |
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | Hydraulic system for oil cylinder pressure maintaining test |
-
2019
- 2019-05-15 CN CN201910403353.9A patent/CN110243554B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202418111U (en) * | 2012-01-19 | 2012-09-05 | 东洋机电(中国)有限公司 | Hydraulic performance experimental device for cylinder |
| CN103233945A (en) * | 2013-05-08 | 2013-08-07 | 布柯玛蓄能器（天津）有限公司 | Oil pressure test bed of energy accumulator |
| CN103410810A (en) * | 2013-08-13 | 2013-11-27 | 湖南特力液压有限公司 | Test equipment for testing durability of sealing element of hydraulic cylinder |
| CN207393598U (en) * | 2017-09-25 | 2018-05-22 | 佛山伊之密精密橡胶机械有限公司 | A kind of novel differential cylinder structure |
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | Hydraulic system for oil cylinder pressure maintaining test |
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| CN110243554B (en) | 2021-03-23 |
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