CN104514770A - Micro-pressure calibration apparatus for hydraulic element - Google Patents
Micro-pressure calibration apparatus for hydraulic element Download PDFInfo
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- CN104514770A CN104514770A CN201310460175.6A CN201310460175A CN104514770A CN 104514770 A CN104514770 A CN 104514770A CN 201310460175 A CN201310460175 A CN 201310460175A CN 104514770 A CN104514770 A CN 104514770A
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- pressure
- oil
- hydraulic
- micro
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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
- F15B19/002—Calibrating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A micro-pressure calibration apparatus for a hydraulic element relates to the technical field of micro-pressure calibration of the hydraulic element; the micro-pressure calibration apparatus is structurally characterized in that an oil outlet of an oil tank is connected with a micro-pressure motor pump by using a hydraulic pipeline; the micro-pressure motor pump is connected with an oil outlet filter by using the hydraulic pipeline; the oil outlet filter is connected with a speed control valve by using the hydraulic pipeline; the speed control valve is connected with a gas-liquid pressure-reducing valve by using the hydraulic pipeline; the gas-liquid pressure-reducing valve is connected with an oil outlet connector by using the hydraulic pipeline; a pressure gauge is connected between the pressure-reducing valve and the oil outlet connector; the oil outlet connector is connected to an oil inlet of a to-be-tested hydraulic element; the oil outlet of the to-be-tested hydraulic element is connected to an oil return connector of the micro-pressure calibration apparatus; and the oil return connector is connected to an oil tank component, which is connected with an oil return filter, by using the hydraulic pipeline. With utilization of the micro-pressure calibration apparatus for the hydraulic element, the labor intensity of the micro-pressure calibration for the hydraulic element is reduced, the calibration precision is improved and the calibration of the pressure ranging from 0 to 0.5 MPa can be satisfied.
Description
Technical field
The invention belongs to the micro-pressure calibration technology field of hydraulic element, relate to a kind of micro-pressure checking apparatus of hydraulic element.
Background technique
Helicopter hydraulic system element needs to carry out pressure checking before installation, and the verification pressure that several hydraulic element as certain type machine hydraulic system need is very little, and between 5KPa to 25KPa, described hydraulic element have filler opening A and oil outlet B.Usually the pressure checking device adopted as shown in Figure 1, using hand pump 1 as power source, hydraulic oil is pumped from fuel tank assembly 2, connected the oil outlet 7 of this device through going out the elements such as oil strainer 3, one-way valve 4, series flow control valve 5 by hydraulic pipe line, described oil outlet 7 connects tested hydraulic element 20 filler opening A, tested hydraulic element 20 oil outlet B is connected with this device return opening 8, and described return opening 8 connects the return opening of fuel tank assembly 2 through return filter 9 by hydraulic pipe line.One piece of pressure gauge 6 is connected between described series flow control valve 5 and oil outlet 7.During verification, the rocking arm of manually-operated pump 1 is suppressed, and adjusts series flow control valve 5 simultaneously, observes pressure gauge 6, shows force value constantly adjust hand pump and suppress speed and strength according to pressure gauge 6, until reach required verification pressure.Because required verification pressure is small, required precision is high, wants to waste time and energy when reaching required verification pressure by this device.
Summary of the invention
The object of the invention is: the micro-pressure checking apparatus providing a kind of hydraulic element, the micro-pressure of hydraulic element is verified more time saving and energy saving, checking precision is higher.
Technological scheme of the present invention is: a kind of micro-pressure checking apparatus of hydraulic element, comprise: fuel tank assembly, the oil outlet of described fuel tank assembly connects minute-pressure electric-motor pump by hydraulic pipe line, described minute-pressure electric-motor pump connects oil strainer by hydraulic pipe line, described go out oil strainer connect one-way valve by hydraulic pipe line, described one-way valve connects series flow control valve by hydraulic pipe line, described series flow control valve connects reduction valve by hydraulic pipe line, described reduction valve connects oil out port by hydraulic pipe line, one piece of pressure gauge is connected between described reduction valve and oil out port, described oil out port connects the filler opening A of tested hydraulic element, tested hydraulic element oil outlet B connects the oil return interface of this device, described oil return interface is connected by hydraulic pipe line and connects fuel tank assembly through return filter.
Advantage of the present invention is: by the use of apparatus of the present invention, reduces the labor intensity of hydraulic element micro-pressure verification, improves the checking precision of micro-pressure verification.
Accompanying drawing explanation
Fig. 1 is existing hydraulic element micro-pressure calibration technology schematic diagram.
Fig. 2 is the micro-pressure checking apparatus schematic diagram of a kind of hydraulic element of the present invention.
Embodiment
Below the present invention is described in further details.See Fig. 2,
Structure of the present invention consists of: fuel tank assembly 10, the oil outlet of described fuel tank assembly 10 connects minute-pressure electric-motor pump 11 by hydraulic pipe line, described minute-pressure electric-motor pump 11 connects oil strainer 12 by hydraulic pipe line, described go out oil strainer 12 by hydraulic pipe line connect one-way valve 13, described one-way valve 13 connects series flow control valve 14 by hydraulic pipe line, described series flow control valve 14 connects reduction valve 15 by hydraulic pipe line, described reduction valve 15 connects oil out port 17 by hydraulic pipe line, one piece of pressure gauge 16 is connected between described reduction valve 15 and oil out port 17, described oil out port 17 connects the filler opening A of tested hydraulic element 20, tested hydraulic element 20 oil outlet B connects the oil return interface 18 of this device, described oil return interface 18 is connected by hydraulic pipe line and connects fuel tank assembly 10 through return filter 19.
To verify the hydraulic element that pressure is 20KPa, first this hydraulic element filler opening A is connected with the oil out port 17 of hydraulic element micro-pressure checking apparatus of the present invention, hydraulic element return opening B is connected with oil return interface 18 of the present invention, then pushbutton enable minute-pressure electric-motor pump 11 continues delivery pressure, adjustment series flow control valve 14, then by the knob adjustment charge oil pressure of reduction valve 15, observe pressure gauge 16, until output verification pressure reaches designated value for it simultaneously.Due to need not manual voltage supply, adjustment pressure be the knob by being arranged on series flow control valve 14 on one piece of panel and reduction valve 15, and each turn knobs can realize very little pressure to be increased or reduce, and this makes pressure adjusting more time saving and energy saving, and checking precision is higher.
Claims (1)
1. the micro-pressure checking apparatus of hydraulic element, it is characterized in that: comprising: fuel tank assembly (10), the oil outlet of described fuel tank assembly (10) connects minute-pressure electric-motor pump (11) by hydraulic pipe line, described minute-pressure electric-motor pump (11) connects oil strainer (12) by hydraulic pipe line, described go out oil strainer (12) connect one-way valve (13) by hydraulic pipe line, described one-way valve (13) connects series flow control valve (14) by hydraulic pipe line, described series flow control valve (14) connects reduction valve (15) by hydraulic pipe line, described reduction valve (15) connects oil out port (17) by hydraulic pipe line, one piece of pressure gauge (16) is connected between described reduction valve (15) and oil out port (17), described oil out port (17) connects the filler opening A of tested hydraulic element, tested hydraulic element oil outlet B connects the oil return interface (18) of this device, described oil return interface (18) is connected by hydraulic pipe line and connects fuel tank assembly (10) through return filter (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460175.6A CN104514770B (en) | 2013-09-30 | 2013-09-30 | A kind of micro-pressure calibration equipment of Hydraulic Elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460175.6A CN104514770B (en) | 2013-09-30 | 2013-09-30 | A kind of micro-pressure calibration equipment of Hydraulic Elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104514770A true CN104514770A (en) | 2015-04-15 |
| CN104514770B CN104514770B (en) | 2017-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460175.6A Active CN104514770B (en) | 2013-09-30 | 2013-09-30 | A kind of micro-pressure calibration equipment of Hydraulic Elements |
Country Status (1)
| Country | Link |
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| CN (1) | CN104514770B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071476A (en) * | 2019-12-25 | 2020-04-28 | 国营芜湖机械厂 | Method for checking tightness and working performance of hydraulic system in assembly stage |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500133A (en) * | 1975-12-30 | 1978-02-08 | Secr Defence | Hydraulic test equipment |
| RU2011038C1 (en) * | 1991-04-08 | 1994-04-15 | Першин Виктор Алексеевич | Bench for testing members of hydraulic drive |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| CN201265573Y (en) * | 2008-08-26 | 2009-07-01 | 比亚迪股份有限公司 | Test bed for hydraulic cylinder |
| CN101813109A (en) * | 2010-04-02 | 2010-08-25 | 山东电力研究院 | Servo valve test system |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, method for controlling hydraulic system and engineering machinery |
| CN203081905U (en) * | 2013-01-30 | 2013-07-24 | 上海航新航宇机械技术有限公司 | Test bed of valve actuator cylinder |
-
2013
- 2013-09-30 CN CN201310460175.6A patent/CN104514770B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500133A (en) * | 1975-12-30 | 1978-02-08 | Secr Defence | Hydraulic test equipment |
| RU2011038C1 (en) * | 1991-04-08 | 1994-04-15 | Першин Виктор Алексеевич | Bench for testing members of hydraulic drive |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| CN201265573Y (en) * | 2008-08-26 | 2009-07-01 | 比亚迪股份有限公司 | Test bed for hydraulic cylinder |
| CN101813109A (en) * | 2010-04-02 | 2010-08-25 | 山东电力研究院 | Servo valve test system |
| CN102720710A (en) * | 2012-06-26 | 2012-10-10 | 中联重科股份有限公司 | Hydraulic system, method for controlling hydraulic system and engineering machinery |
| CN203081905U (en) * | 2013-01-30 | 2013-07-24 | 上海航新航宇机械技术有限公司 | Test bed of valve actuator cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111071476A (en) * | 2019-12-25 | 2020-04-28 | 国营芜湖机械厂 | Method for checking tightness and working performance of hydraulic system in assembly stage |
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| Publication number | Publication date |
|---|---|
| CN104514770B (en) | 2017-09-26 |
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