CN104564909A - Water-based medium oil cylinder pressure test device - Google Patents
Water-based medium oil cylinder pressure test device Download PDFInfo
- Publication number
- CN104564909A CN104564909A CN201310528466.4A CN201310528466A CN104564909A CN 104564909 A CN104564909 A CN 104564909A CN 201310528466 A CN201310528466 A CN 201310528466A CN 104564909 A CN104564909 A CN 104564909A
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- CN
- China
- Prior art keywords
- valve
- oil cylinder
- cylinder
- selector valve
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
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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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a water-based medium oil cylinder pressure test device which comprises a liquid tank, a liquid pump, a tested oil cylinder and a reversing valve. Two oil ports of the tested oil cylinder are connected with a liquid pump through a corresponding valve I or a corresponding valve II and a one-way valve I. An oil feeding port of the reversing valve is connected with the one-way valve I, the valve I and the valve II, an oil return port of the reversing valve is connected with the liquid tank, and two working oil ports of the reversing valve are respectively connected with one oil port of the tested oil cylinder. The device is characterized by further comprising a pressurizing cylinder and a pressurizing reversing valve. The oil feeding port of the pressurizing reversing valve is connected with the liquid pump, the oil return port of the pressurizing reversing valve is connected with the liquid tank, a working oil port of the pressurizing reversing valve is connected with the large cavity end of the pressurizing cylinder, the small cavity end of the pressurizing cylinder is connected between the one-way valve I and the oil feeding port of the reversing valve through a one-way valve II; a one-way valve III is arranged between the liquid pump and the small cavity end of the pressurizing cylinder. The pressure test device can output high pressure to meet the requirement of a water-based medium pressure test.
Description
Technical field
The present invention relates to a kind of oil cylinder Withstand test device for aqueous medium.
Background technique
Oil cylinder on coal mine machinery, even if also there is not potential safety hazard after leaking in the liquid medium in its operating environment requirements oil cylinder, this pressured fluid just determining that it uses can not be wet goods combustable liquid, aqueous medium need be adopted, but the viscosity of aqueous medium liquid is lower, permeability is high, when doing pressure test to oil cylinder, fluid is substituted with aqueous medium, common selector valve, oil pump systems can only export the pressure of 3-4 MPa, cannot meet high pressure (as the 80-100 MPa) requirement of pressure test.
Summary of the invention
The object of the invention is for prior art above shortcomings, provide a kind of aqueous medium oil cylinder Withstand test device, it can export high pressure, to meet the requirement of pressure test.
For achieving the above object, aqueous medium oil cylinder Withstand test device of the present invention, comprise liquid case, liquid pump, tested oil cylinder, selector valve, two hydraulic fluid ports of tested oil cylinder are connected with liquid pump respectively by a respective valve I or valve II and one-way valve I, the filler opening of selector valve and one-way valve I, valve I is connected with valve II, the return opening of selector valve is connected with liquid case, two actuator ports of selector valve are connected with a hydraulic fluid port of tested oil cylinder respectively, characterized by further comprising a pressurized cylinder and supercharging selector valve, the filler opening of supercharging selector valve is connected with liquid pump, the return opening of supercharging selector valve is connected with liquid case, one actuator port of supercharging selector valve is connected with the large chamber end of pressurized cylinder, the loculus end of pressurized cylinder is connected between one-way valve I and the filler opening of selector valve by one-way valve II, one-way valve III is also provided with between liquid pump and the loculus end of pressurized cylinder.
When the withstand voltage experiment carrying out oil cylinder, the guiding valve of supercharging selector valve and selector valve is first in meta, a unlatching in valve I and valve II, then another is closed, liquid pump works, to a hydraulic fluid port feed flow of tested oil cylinder, and the piston walking in it, one-way valve III is open, to the loculus fluid infusion of pressurized cylinder simultaneously; When piston walks limit position, operation supercharging selector valve, makes its actuator port to the large chamber feed flow of pressurized cylinder, piston in it moves, and to the fluid pressurization in loculus, one-way valve III closes, one-way valve II opens, and to fluid pressurization in tested oil cylinder, detects the resistance to pressure of oil cylinder; When operating tested in-oil cylinder piston reverses direction walking, reversing valve operated guiding valve, makes the actuator port of its correspondence and return opening connect, and tested in-oil cylinder decompression returns the return opening stream liquid-return box of liquid through selector valve;
As a further improvement on the present invention, two actuator ports of described selector valve are connected with two hydraulic fluid ports of tested oil cylinder respectively by respective valve III or valve IV, and the filler opening of selector valve is also connected with one-way valve II with one-way valve I by valve V; When carrying out supercharging, can in throttle down V and valve III and valve IV one, open in valve III and valve IV another, to avoid the too high damage selector valve of boost pressure or to cause selector valve cannot action;
As a further improvement on the present invention, liquid pump is connected with liquid case by relief valve; To ensure to improve to system the flow be applicable to;
In sum, the present invention can export high pressure, to meet the requirement of aqueous medium pressure test.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
As shown in Figure 1, this aqueous medium oil cylinder Withstand test device, comprise liquid case 1, liquid pump 2, tested oil cylinder 3, selector valve 4, pressurized cylinder 8 and supercharging selector valve 9, liquid pump is connected with liquid case by relief valve, two hydraulic fluid ports of tested oil cylinder 3 are connected with liquid pump 2 respectively by respective valve 5 or valve 6 and an one-way valve 7, the filler opening of selector valve 4 is by valve 15 and one-way valve 7, valve 5 is connected with valve 6, the return opening of selector valve 4 is connected with liquid case 1, respective valve 11 or valve 12 are connected with a hydraulic fluid port of tested oil cylinder 3 two actuator ports of selector valve 4 respectively, the filler opening of supercharging selector valve 9 is connected with liquid pump 2, the return opening of supercharging selector valve 9 is connected with liquid case 1, one actuator port of supercharging selector valve 9 is connected with the large chamber end of pressurized cylinder 8, the loculus end of pressurized cylinder 8 is connected between one-way valve 7 and valve 15 by one-way valve 13, one-way valve 14 is also provided with between liquid pump 2 and the loculus end of pressurized cylinder 8.
When the withstand voltage experiment carrying out oil cylinder, the guiding valve of supercharging selector valve 8 and selector valve 4 is first in meta, and valve 5 is opened, and valve 6 is closed, and valve 12 is opened, and valve 11 is closed; Liquid pump 2 works, and to the left oil port feed flow of tested oil cylinder 3, the piston in it is walked to the right, and one-way valve 14 is open, to the loculus fluid infusion of pressurized cylinder 8 simultaneously; When the piston of tested oil cylinder 3 walks right side limit position, operation supercharging selector valve 9, make its actuator port to the large chamber feed flow of pressurized cylinder 8, piston in it moves, to the fluid pressurization in loculus, now one-way valve 14 is closed, and one-way valve 13 is opened, to fluid pressurization in tested oil cylinder 3, the resistance to pressure of oil cylinder can be detected; When the piston in tested oil cylinder 3 need be walked left, valve 5 is closed, valve 6 is opened, valve 11 is opened, valve 12 is closed, liquid pump 2 works, the guiding valve of reversing valve operated 4, makes the left side actuator port of its correspondence and return opening connect, and in tested oil cylinder 3, the decompression in left side returns the return opening stream liquid-return box 1 of liquid through selector valve 4; Valve 11,12,15 can be avoided the too high damage selector valve 4 of boost pressure or cause selector valve 4 cannot action.
Claims (3)
1. an aqueous medium oil cylinder Withstand test device, comprise liquid case, liquid pump, tested oil cylinder, selector valve, two hydraulic fluid ports of tested oil cylinder are connected with liquid pump respectively by a respective valve I or valve II and one-way valve I, the filler opening of selector valve and one-way valve I, valve I is connected with valve II, the return opening of selector valve is connected with liquid case, two actuator ports of selector valve are connected with a hydraulic fluid port of tested oil cylinder respectively, characterized by further comprising a pressurized cylinder and supercharging selector valve, the filler opening of supercharging selector valve is connected with liquid pump, the return opening of supercharging selector valve is connected with liquid case, one actuator port of supercharging selector valve is connected with the large chamber end of pressurized cylinder, the loculus end of pressurized cylinder is connected between one-way valve I and the filler opening of selector valve by one-way valve II, one-way valve III is also provided with between liquid pump and the loculus end of pressurized cylinder.
2. aqueous medium oil cylinder Withstand test device as claimed in claim 1, it is characterized in that two actuator ports of described selector valve are connected with two hydraulic fluid ports of tested oil cylinder respectively by respective valve III or valve IV, the filler opening of selector valve is also connected with one-way valve II with one-way valve I by valve V.
3. aqueous medium oil cylinder Withstand test device as claimed in claim 1 or 2, is characterized in that liquid pump is connected with liquid case by relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528466.4A CN104564909A (en) | 2013-10-23 | 2013-10-23 | Water-based medium oil cylinder pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528466.4A CN104564909A (en) | 2013-10-23 | 2013-10-23 | Water-based medium oil cylinder pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564909A true CN104564909A (en) | 2015-04-29 |
Family
ID=53081749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310528466.4A Pending CN104564909A (en) | 2013-10-23 | 2013-10-23 | Water-based medium oil cylinder pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564909A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966281A (en) * | 2019-12-30 | 2020-04-07 | 哈尔滨通用液压机械制造有限公司 | Pressure-resistant test tool structure of single-action oil cylinder |
-
2013
- 2013-10-23 CN CN201310528466.4A patent/CN104564909A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966281A (en) * | 2019-12-30 | 2020-04-07 | 哈尔滨通用液压机械制造有限公司 | Pressure-resistant test tool structure of single-action oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |