CN206647358U - A kind of servo valve pressure test loop apparatus - Google Patents
A kind of servo valve pressure test loop apparatus Download PDFInfo
- Publication number
- CN206647358U CN206647358U CN201720381002.9U CN201720381002U CN206647358U CN 206647358 U CN206647358 U CN 206647358U CN 201720381002 U CN201720381002 U CN 201720381002U CN 206647358 U CN206647358 U CN 206647358U
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- Prior art keywords
- valve
- servo valve
- electromagnet cut
- servo
- oil
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Abstract
The utility model provides a kind of servo valve pressure test loop apparatus, Ultra-high Pressure Radial Piston Pump, proportional pressure control valve, stop valve, check valve and two electromagnet cut off valve between fuel tank and servo valve to be tested are connected to by petroleum pipeline, Ultra-high Pressure Radial Piston Pump can be 1.5 times of the actuator port rated pressure that the oil pressure that servo valve provides is more than or equal on the servo valve.Valve will be tested by frock and pressure test loop to be connected with super-pressure pump, the pressure test that all hydraulic fluid ports are only disposably completed in pipeline connection by computer operation can need not be changed after subject valve installation, disposable experiment, improve the efficiency of electrohydraulic servo valve pressure test.
Description
Technical field
A kind of servo valve pilot system is the utility model is related to, more particularly to a kind of servo valve pressure test loop apparatus.
Background technology
Electrohydraulic servo-controlling system is widely used in the key areas such as generating, metallurgy, Aero-Space, and electrohydraulic servo valve is electricity
The core component of liquid servo-control system, is both signal conversion element, is power amplification element again.Electrohydraulic servo valve combines machine
The high-precision part of tool, electronics and hydraulic technique, feature of both electricity and hydraulic pressure is combined, there is control accuracy height, ring
Answer speed is fast, signal transacting flexibly, output power and it is compact-sized the advantages that.Its performance quality directly influences electrichydraulic control
Control accuracy, stability and the reliability of system.
Key position due to the high-precision of electrohydraulic servo valve and in electrohydraulic servo-controlling system, the inspection of servo valve
Survey the performance indications for ensureing servo valve and ensure that the work that electrohydraulic servo system is accurate, quick, stable has important meaning.
Every electrohydraulic servo valve is strictly being tested its parameter using preceding having to pass through various instrument, and whether check feature, which reaches, has
Index is closed, so just can guarantee that the normal operation of servo-drive system.Servo valve will carry out pressure test before performance test is done,
《QJ504A-96 flow electro-hydraulic servo valve general specifications》The middle pressure for requiring pressure test is the 1.5 of actuator port rated pressure
Times, higher than the pressure of performance test.But servo valve testboard is generally all the pressure design by performance test, and pressure test is then
Using manual pump, a hydraulic fluid port (in servo valve oil-feed port P, actuator port A and B, oil return inlet T any one) just needs are finished
The high-pressure hose of manual pump is reinstalled on next hydraulic fluid port, it is inconvenient for operation, not only need to shut down, and easily cause oil
Road is polluted and hydraulic oil loss.And the program carries out pressure test respectively to each hydraulic fluid port of servo valve, an examination is often finished
The internal leakage of servo valve needs to be collected separately during testing.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of servo valve pressure test is returned
Road.
To achieve the above object, the utility model uses following technical proposals：
Ultra-high Pressure Radial Piston Pump, the proportional overflow being connected to by petroleum pipeline between fuel tank and servo valve to be tested
Valve, stop valve, check valve and two electromagnet cut off valve, the Ultra-high Pressure Radial Piston Pump can be that the oil pressure that servo valve provides is big
1.5 times of actuator port rated pressure on equal to the servo valve, exceed in the oil pressure of Ultra-high Pressure Radial Piston Pump output
Proportional pressure control valve, which flows back part fluid, during the oil pressure of proportional pressure control valve setting conveys oil return box.
The electromagnet cut off valve is two-position three-way electromagnetic stop valve.
Fuel tank that oil circuit in described device includes being sequentially connected, stop valve I, Ultra-high Pressure Radial Piston Pump, check valve, cut
Only valve II, proportional pressure control valve, electromagnet cut off valve I, servo valve to be tested, electromagnet cut off valve II, last hydraulic oil are back to oil
Case；Or the oil circuit in described device include be sequentially connected fuel tank, stop valve I, Ultra-high Pressure Radial Piston Pump, check valve, cut
Only valve II, proportional pressure control valve, electromagnet cut off valve II, servo valve to be tested, electromagnet cut off valve I, last hydraulic oil are back to oil
Case.
In described device electromagnet cut off valve I be in electricity condition when, electromagnet cut off valve II is in power-down state；The electromagnetism
Stop valve II be in electricity condition when, electromagnet cut off valve I is in power-down state；And certain electromagnet cut off valve be in electricity condition when,
Hydraulic oil flows to servo valve to be tested through the electromagnet cut off valve after being pressurizeed from fuel tank by radial plunger pumped；Certain electromagnetism is cut
When only valve is in power-down state, hydraulic oil flows to fuel tank from servo valve to be tested through the electromagnet cut off valve.
When the servo valve oil-feed port P and actuator port A carry out pressure test, fluid flows successively from electromagnet cut off valve I
To servo valve oil-feed port P, servo valve actuator port A, it flow to servo valve B mouths through the gap between valve element valve pocket and servo valve returns
Hydraulic fluid port T, fuel tank is flowed back to through electromagnet cut off valve II；When carrying out pressure test to the servo valve oil-feed port P and actuator port B, oil
Liquid flows to servo valve oil-feed port P, servo valve actuator port B successively from electromagnet cut off valve I, through clearance flow between valve element valve pocket
Servo valve A mouths and servo valve oil return inlet T are moved, fuel tank is flowed back to through electromagnet cut off valve II；The servo valve oil return inlet T is carried out resistance to
During pressure experiment, fluid flows to servo valve oil return inlet T from electromagnet cut off valve II, and servo is flow to through the gap between valve element valve pocket
Valve A mouths, B mouths and P mouths, fuel tank is flowed back to through electromagnet cut off valve II.
Described device also includes computer, and the electromagnet cut off valve and proportional pressure control valve control by computer.
The utility model has the advantages that：Carry out pressure regulation operation on computers with proportional pressure control valve and pass through control
System processed makes electromagnet cut off valve obtain electric and power down and completes the pressure-resistant of all hydraulic fluid ports of servo valve to servo valve control signal can
Experiment.The utility model will be tested servo valve and will be connected with super-pressure pump, and it is only logical to change pipeline connection after subject valve installation
The pressure test that computer operation can disposably completes all hydraulic fluid ports is crossed, disposable experiment, it is pressure-resistant to improve electrohydraulic servo valve
The efficiency of experiment.Servo valve pressure test loop apparatus provided by the utility model is simple to operate, and efficiency improves, and saves man-hour.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is servo valve pressure test loop apparatus schematic diagram of the present utility model；
Fig. 2 is the structure chart of the utility model servo valve.
In figure：40- fuel tanks, 41- Ultra-high Pressure Radial Piston Pumps, 65- stop valves I, 67- check valve, 23- stop valves II, 54-
Proportional pressure control valve, 56.1- electromagnet cut off valve I, 56.2- electromagnet cut off valve II.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other implementation that those of ordinary skill in the art are obtained under the premise of obvious creative work is not made
Example, belong to the scope of the utility model protection.
The servo valve testing stand pressure test section hydraulic schematic diagram as shown in Figure 1, P mouths and A mouth pressure tests：Electromagnetism is cut
Only valve 56.1 obtains electric, electromagnet cut off valve II56.2 power down, and P mouths are to subject valve control signal (being usually forward signal)
Communicate, the state that B mouths communicate with T mouths, the hydraulic oil that super-high-pressure plunger pump 41 exports as seen from Figure 1, overflow by ratio with A mouths
The setup pressure value of valve 54 is flowed, the P mouths of subject servo valve are entered by electromagnet cut off valve I56.1, servo valve is tested as shown in Figure 2 and exists
Valve element is moved right in the presence of control signal, and valve port 1 and 3 is opened, while valve port 2 and 4 is closed, and subject servo valve is internally formed
P mouths lead to A mouths and B mouths lead to the state of T mouths, and due to electromagnet cut off valve II56.2 power down, therefore the T mouths for being tested servo valve take back oil
Case.
P mouths as shown in Figure 1 and B mouth pressure tests：Electromagnet cut off valve I56.1 obtains electric, electromagnet cut off valve II56.2 power down, gives
Subject valve control signal (being usually negative-going signal) is at the state that P mouths communicate with B mouths, A mouths communicate with T mouths, can by Fig. 1
To find out the hydraulic oil of the output of super-high-pressure plunger pump 41, by the setup pressure value of proportional pressure control valve 54, pass through electromagnet cut off valve I56.1
Into the P mouths of subject servo valve, be tested as shown in Figure 2 servo valve in the presence of control signal valve element to left movement, the He of valve port 2
4 are opened, while valve port 1 and 3 is closed, and subject servo valve is internally formed the state that P mouths lead to B mouths and A mouths lead to T mouths, due to electromagnetism
Stop valve II56.2 power down, therefore the T mouths for being tested servo valve take back fuel tank.
T mouths pressure test as described in Figure 1：Electromagnet cut off valve I56.1 power down, electromagnet cut off valve II56.2 obtain it is electric, can by Fig. 1
To find out the hydraulic oil of the output of super-high-pressure plunger pump 41, by the setup pressure value of proportional pressure control valve 54, pass through electromagnet cut off valve
II56.2 enters the T mouths of subject servo valve, pressure test is carried out to T mouths, due to leakage, A between valve inner spool valve pocket be present
Mouth, B mouths may also bear the pressure of T mouths, but pressure test above done to A mouths, B mouths, and pressure is higher than T mouths
Pressure, therefore any problem will not be produced, Leakage Energy returns to fuel tank by P mouths and electromagnet cut off valve I56.1.
Claims (6)
1. a kind of servo valve pressure test loop apparatus, it is characterised in that including being connected to fuel tank (40) with treating by petroleum pipeline
Ultra-high Pressure Radial Piston Pump (41), proportional pressure control valve (54), stop valve, check valve (67) and two between the servo valve of experiment
Individual electromagnet cut off valve, the Ultra-high Pressure Radial Piston Pump can be the work that the oil pressure that servo valve provides is more than or equal on the servo valve
Make hydraulic fluid port rated pressure 1.5 times, when the oil pressure of Ultra-high Pressure Radial Piston Pump output exceedes the oil pressure of proportional pressure control valve setting
Part fluid is flowed back and conveys oil return box by proportional pressure control valve.
2. device according to claim 1, it is characterised in that the electromagnet cut off valve is two-position three-way electromagnetic cut-off
Valve.
3. device according to claim 1, it is characterised in that fuel tank (40) that oil circuit in device includes being sequentially connected,
Stop valve I (65), Ultra-high Pressure Radial Piston Pump (41), check valve (67), stop valve II (23), proportional pressure control valve (54), electromagnetism
Stop valve I (56.1), servo valve to be tested, electromagnet cut off valve II (56.2), last hydraulic oil are back to fuel tank；It is or described
Oil circuit in device includes fuel tank (40), stop valve I (65), Ultra-high Pressure Radial Piston Pump (41), the check valve being sequentially connected
(67), stop valve II (23), proportional pressure control valve (54), electromagnet cut off valve II (56.2), servo valve to be tested, electromagnet cut off valve
I (56.1), last hydraulic oil are back to fuel tank.
4. device according to claim 3, it is characterised in that electromagnet cut off valve I (56.1) is in electric in described device
During state, electromagnet cut off valve II (56.2) is in power-down state；The electromagnet cut off valve II (56.2) be in electricity condition when, electricity
Magnetic stop valve I (56.1) is in power-down state；And certain electromagnet cut off valve be in electricity condition when, hydraulic oil is from fuel tank (40) by footpath
Servo valve to be tested is flowed to through the electromagnet cut off valve after extracting pressurization out to plunger pump (41)；Certain electromagnet cut off valve is in power down
During state, hydraulic oil flows to fuel tank (40) from servo valve to be tested through the electromagnet cut off valve.
5. device according to claim 4, it is characterised in that carried out to the servo valve oil-feed port P and actuator port A resistance to
During pressure experiment, fluid flows to servo valve oil-feed port P, servo valve actuator port A successively from electromagnet cut off valve I (56.1), through valve
Gap between core valve pocket flow to servo valve B mouths and servo valve oil return inlet T, and fuel tank is flowed back to through electromagnet cut off valve II (56.2)；
When carrying out pressure test to the servo valve oil-feed port P and actuator port B, fluid flows successively from electromagnet cut off valve I (56.1)
To servo valve oil-feed port P, servo valve actuator port B, it flow to servo valve A mouths through the gap between valve element valve pocket and servo valve returns
Hydraulic fluid port T, fuel tank is flowed back to through electromagnet cut off valve II (56.2)；When carrying out pressure test to the servo valve oil return inlet T, fluid is from electricity
Magnetic stop valve II (56.2) flows to servo valve oil return inlet T, through the gap between valve element valve pocket flow to servo valve A mouths, B mouths and
P mouths, fuel tank is flowed back to through electromagnet cut off valve II (56.1).
6. the device according to any one in Claims 1 to 5, it is characterised in that described device also includes computer, institute
State electromagnet cut off valve and proportional pressure control valve (54) controls by computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381002.9U CN206647358U (en) | 2017-04-12 | 2017-04-12 | A kind of servo valve pressure test loop apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720381002.9U CN206647358U (en) | 2017-04-12 | 2017-04-12 | A kind of servo valve pressure test loop apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647358U true CN206647358U (en) | 2017-11-17 |
Family
ID=60276066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720381002.9U Expired - Fee Related CN206647358U (en) | 2017-04-12 | 2017-04-12 | A kind of servo valve pressure test loop apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116025612A (en) * | 2023-03-27 | 2023-04-28 | 烟台中宇航空液压有限公司 | Rotary electrohydraulic servo valve |
-
2017
- 2017-04-12 CN CN201720381002.9U patent/CN206647358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116025612A (en) * | 2023-03-27 | 2023-04-28 | 烟台中宇航空液压有限公司 | Rotary electrohydraulic servo valve |
| CN116025612B (en) * | 2023-03-27 | 2023-06-20 | 烟台中宇航空液压有限公司 | Rotary electrohydraulic servo valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |