CN107489666A - ROV small-sized hydraulic testboards - Google Patents
ROV small-sized hydraulic testboards Download PDFInfo
- Publication number
- CN107489666A CN107489666A CN201710722284.9A CN201710722284A CN107489666A CN 107489666 A CN107489666 A CN 107489666A CN 201710722284 A CN201710722284 A CN 201710722284A CN 107489666 A CN107489666 A CN 107489666A
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- China
- Prior art keywords
- valve
- pile
- rov
- testboard
- directional control
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of test device, specifically a kind of ROV small-sized hydraulics testboard.Including support and rack-mount fuel tank, hydraulic pump, oil return box, solenoid directional control valve, pile-up valve A, pile-up valve B and console, the inlet port of wherein hydraulic pump connects with fuel tank, the oil discharge outlet of hydraulic pump is connected by main oil feed line with the oil inlet of solenoid directional control valve, the oil return opening of solenoid directional control valve is connected by return line with oil return box, the first of solenoid directional control valve, second actuator port is connected with pile-up valve A and pile-up valve B respectively by two branch lines, pile-up valve A and pile-up valve B connect with the oil inlet and oil return pipeline of load to be tested, hydraulic pump, solenoid directional control valve, pile-up valve A and pile-up valve B are connected with console.The present invention concentrates on testboard control unit, parameter display unit and electric unit on console, and the console and hydraulic system are partially attached to one, makes that whole hydraulic means testboard is easy to operate, conveniently moving.
Description
Technical field
The present invention relates to a kind of test device, specifically a kind of ROV small-sized hydraulics testboard.
Background technology
Hydraulic Test Technique is checking properties of product as Hydraulic Elements and the key technology of hydraulic system development and production
The important means in index, reliability, life-span etc..But for a long time, because the independent intellectual property right of hydraulic test product is few, together
When test equipment input is larger etc. that factor, Hydraulic Test Technique do not obtain deep utilization.Got over the technology of test equipment
Come it is more complicated, be worth more and more higher, protection equipment and by trial product safety it is more and more important.
At present, Hydraulic Test Technique more typical in market is more based on traditional steady state test, only meets that some are necessary
Working stress and environmental stress simulation.And because the use technology of the large-scale deep-sea detection equipment such as domestic ROV is not yet popularized, its
The daily maintenance test system of the main valuable component such as self-contained manipulator, propeller, hydraulic jack, hydraulic motor is just
It is more few.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of ROV small-sized hydraulics testboard.The small-sized hydraulic is tested
Platform, which meets that the hydraulic test of the various uses such as ROV manipulators, propeller, hydraulic jack, hydraulic motor is tested after maintaining, to be made
With, flow, pressure and other parameters requirement can not only be met, and the accurate adjustable of above-mentioned parameter can be realized, to meet ROV machines
The debugging of the various precise hydraulic equipment such as tool hand uses.
To achieve these goals, the present invention uses following technical scheme:
A kind of ROV small-sized hydraulics testboard, including support and installation fuel tank on the bracket, hydraulic pump, oil return box,
Solenoid directional control valve, pile-up valve A, pile-up valve B and console, the inlet port of wherein hydraulic pump connect with fuel tank, the hydraulic pump
Oil discharge outlet is connected by main oil feed line with the oil inlet of solenoid directional control valve, and the oil return opening of the solenoid directional control valve passes through oil return pipe
Road connects with oil return box, and the first actuator port and the second actuator port of the solenoid directional control valve are distinguished by two branch lines
Connected with pile-up valve A and pile-up valve B, the pile-up valve A and pile-up valve B connect with the oil inlet and oil return pipeline of load to be tested, described
Hydraulic pump, solenoid directional control valve, pile-up valve A and pile-up valve B are connected with the console.
The main oil feed line is provided with bypass conduit, and the bypass conduit is provided with overflow valve and pressure-regulating valve, institute
Overflow valve and pressure-regulating valve is stated to be connected with the console.
The main oil feed line is provided with flowmeter and pressure gauge.
The testboard further comprises external circulating filtration system, and the external circulating filtration system includes circulation
Pump, filter and circulation line, wherein circulating pump and filter are arranged on the support, and connected by circulation line,
The both ends of the circulation line are connected with the fuel tank, form closed loop cycle pipeline, and the circulating pump is connected with the console.
The return line is provided with stop valve and cooling system.
The pile-up valve A and pile-up valve B include multigroup output channel, and stop valve is equipped with each output channel, and
The end of each output channel is equipped with connector.
The testboard further comprises the draining pile-up valve connected by drain line with the fuel tank, the draining collection
It is used to connect with the drain tap of load to be measured into valve.
The draining pile-up valve includes two groups of output channels, and stop valve is equipped with each output channel.
The solenoid directional control valve is three-position four-way electromagnetic directional valve.
Advantages of the present invention and beneficial effect are:
1. testboard control unit, parameter display unit and electric unit are concentrated on the control specially designed by the present invention
On platform, the console and hydraulic system are partially attached to one, make that whole hydraulic means testboard is easy to operate, conveniently moving.
2. the present invention, in order to ensure testboard system hydraulic oil NAS6 levels, the testing stand sets individually external circulating filtering
System, that is, an oil circulating pump and import 1um high accuracy filters are set up, alone cycle filtering is carried out to system fluid, to ensure
Testboard system fluid precision.
Brief description of the drawings
Fig. 1 is the hydraulic principle figure of the present invention.
In figure:1 is fuel tank, and 2 be hydraulic pump, and 3 be circulating pump, and 4 be filter, and 5 be remote pressure control force regulating valve, and 6 be pressure
Regulating valve, 7 be oil return box, and 8 be flowmeter, and 9 be solenoid directional control valve, and 10 be pile-up valve B, and 11 be pile-up valve A, and 12 integrate for draining
Valve, 13 be connector B, and 14 be connector A, and 15 be main oil feed line, and 16 be branch line A, and 17 be branch line B, and 18 be side
Road pipeline, 19 be return line, and 20 be drain line, and P is oil inlet, and T is oil return opening, and C is the first actuator port, D second
Actuator port, a, b are electromagnet.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, with reference to the accompanying drawings and detailed description
The present invention will be described in detail.
As shown in figure 1, a kind of ROV small-sized hydraulics testboard provided by the invention, including support and installed in the support
On fuel tank 1, hydraulic pump 2, oil return box 7, solenoid directional control valve 9, pile-up valve A11, pile-up valve B10 and console, wherein hydraulic pump 2
Inlet port connected with fuel tank 1, the oil inlet P that the oil discharge outlet of hydraulic pump 2 passes through main oil feed line 15 and solenoid directional control valve 9 connects
Logical, the oil return inlet T of solenoid directional control valve 9 is connected by return line 19 with oil return box 7, the first actuator port C of solenoid directional control valve 9
Connected respectively with pile-up valve A11 and pile-up valve B10 by two branch lines with the second actuator port D, pile-up valve A11 and integrated
Valve B10 connects with the oil inlet and oil return pipeline of load to be tested, and hydraulic pump 2, solenoid directional control valve 9, pile-up valve A11 and pile-up valve B10 are equal
Controlled by console.
Solenoid directional control valve 9 is three-position four-way electromagnetic directional valve, and working connection is controlled by solenoid directional control valve 9, the console
On change-over switch the both sides electromagnet of solenoid directional control valve 9 can be controlled to obtain electric or dead electricity respectively, so as to change working connection hydraulic pressure oil stream
Dynamic direction.
Main oil feed line 15 is provided with bypass conduit 18, and bypass conduit 18 is provided with overflow valve 6 and pressure-regulating valve 5, overflows
Stream valve 6 and pressure-regulating valve 5 are controlled by console.
Main oil feed line 15 is provided with flowmeter 8 and pressure gauge.
The testboard further comprises external circulating filtration system, external circulating filtration system include circulating pump 3,
Filter 4 and circulation line, wherein circulating pump 3 and filter 4 are arranged on support, and are connected by circulation line, circulation
The both ends of pipeline are connected with fuel tank 1, form closed loop cycle pipeline, and circulating pump 3 is controlled by console.
The control (outer circulation filtering) of circulating pump 3, when the electric motor starting of hydraulic pump 2, the automatic running of circulating pump 3, hydraulic pressure
When the motor of pump 2 stops, circulating pump 3 is out of service;When the motor of hydraulic pump 2 is out of service, can be controlled by being arranged at
The button switch control start and stop of circulating pump 3 on platform, circulating pump 3 set overload protection function
Return line 19 is provided with stop valve and cooling system.The cooling system cools down for blower fan, and the blower fan passes through
Console controls, and when returning-oil temperature is more than 45 degree, blower fan starts.
Pile-up valve A11 and pile-up valve B10 includes multigroup output channel, and stop valve is equipped with each output channel, and
The end of each output channel is equipped with connector.
The implementation of the present inventionIn example, pile-up valve A11 and pile-up valve B10 include four groups of output channels, and each group of passage is all
One switch valve of band.Wherein two groups of channel connectors can connect 1/4 " JIC males, one group of 1/4 " oil-feed 3/8 " oil return JIC male, finally
One group 1/2 " JIC males, one of which passage set electromagnetism three position four-way directional control valve, can carry out the switching of oil circuit flow direction.
The testboard further comprises the draining pile-up valve 12 connected by drain line 20 with fuel tank 1, and draining integrates
Valve 12 is used to connect with the drain tap of load to be measured.
Draining pile-up valve 12 includes two groups of output channels, and stop valve is equipped with each output channel.
Small-sized hydraulic testboard uses open system, and hydraulic oil container volume is 100L or so, is equipped with air cooled chiller, oil
Case sets the annexes such as top band suspension ring, liquid level mirror, thermometer, residul discharging valve, filling strainer in itself.
Hydraulic pump is driven from 37KW motors, model BOSCH-REXROTH A7V040EP solenoid-operated proportional hydraulic pumps, the pump energy
Enough by the way that the flow of accurate control hydraulic pump becomes after the amplification of servo amplification board after remote flow control adjustable valve output control signal
Change.Overflow valve, remote pressure control force regulating valve and high-pressure flowmeter are set in the outlet of pump simultaneously.Overflow valve plays safety valve,
Prevent that system pressure is too high;Remote pressure control force regulating valve can carry out pressure at a distance and continuously adjust, to meet to be devices under
Pressure requirements;It is to ensure the accuracy of flow rate test that high-pressure flowmeter, which is arranged on the outlet pressure duct of hydraulic pump,.
Because the small-sized hydraulic device to test platform meets that the precise hydraulic equipment such as ROV manipulators uses, therefore to hydraulic pressure
The required precision of oil is very high, typically requires that (the hydraulic oil grade newly purchased is only capable of reaching NAS9 NAS grades for more than six grades
Level).Therefore, it is not recommended that increase pressure filter and low pressure filter in systems, because the filter precision installed additional in hydraulic system is all
In more than 15um, it is impossible to will ensure system hydraulic oil below NAS9 levels.In addition, if install pressure filter additional, then must be
The outlet of hydraulic pump installs additional, and the system pressure is up to 300Mpa, and it is continuous to carry out high-pressure stop valve during distinct device experiment
Switch, compression shock is especially big, be very easy to filter is smashed, potential safety hazard be present.In order to ensure testboard system hydraulic pressure
Oily NAS6 levels, the testing stand set individually external circulating filtration system, that is, set up an oil circulating pump and import 1um high accuracy
Filter, alone cycle filtering is carried out to system fluid, to ensure testboard system fluid precision.
The console includes following functions:
1. the electric motor starting of hydraulic pump 2, stopping and meeting an urgent need to stop control, the motor of hydraulic pump 2 sets overload protection work(
Energy;
2. cooling blower controls, when returning-oil temperature is more than 45 degree, blower fan starts;
3. the control (outer circulation filtering) of circulating pump 3, when main oil pump motor starts, the automatic running of circulating pump 3, hydraulic pump
When 2 motor stops, circulating pump 3 is out of service;When the motor of hydraulic pump 2 is out of service, can be controlled by toggle switch
The start and stop of circulating pump 3.Circulating pump 3 sets overload protection function;
4. working connection solenoid directional control valve control, change-over switch can control respectively the both sides electromagnet of solenoid directional control valve 9 obtain it is electric or
Dead electricity, so as to change working connection running of hydraulic power oil direction;
5. the flow control of hydraulic pump 2, the system hydraulic pump 2 is using variable capacity oil pump, by can power transformation on console
Hinder to change amplification board input signal, amplification board is according to the proportional output control electric current of size of input signal, main oil pump ratio
Coil makes main pump uninterrupted proportional therewith according to amplification board output current signal size.
6. control circuit is also set up:380V turns 220V controls transformer, alternating current 220V turns DC24V power modules.
The testboard starting step is:
1. the oil inlet and oil return pipe of load is connected and opened with pile-up valve A11 and pile-up valve B10 output channel respectively on demand
Open the stop valve on the passage;If being loaded with drain tap, the drainback passage for loading drain tap and draining pile-up valve should be connected
Connect and open the stop valve on the passage.
2. console solenoid control change-over switch is placed in into centre position, then pressure-regulating valve on console is adjusted
Pine.
3. press start button, start motor, after electric motor starting, pressure-regulating valve arrives pressure regulation on adjustment control platform
3-5MPa。
4. solenoid valve control change-over switch is gone into C or D, if going to C, pile-up valve A11 output channels output hydraulic pressure oil,
Pile-up valve B10 passage oil return.When console gage pressure rises to 3MPa, flow adjustment knob is adjusted, pays attention to observation stream
The flow value that gauge is shown, until flow is suitable, while pay attention to the pressure value that pressure gauge is shown on viewing console, pressure value is low
When adjust clockwise pressure-regulating valve handle until pressure it is suitable;When pressure value exceedes the pressure value needed, regulation counterclockwise
The handle of pressure-regulating valve is until pressure is suitable.
5. on lube purification, when hydraulic pump 2 starts, the automatic start of circulating pump 3 is run, external circulating filtration system
Automatic running;During hydraulic pump 2 disables, circulating pump on console 3 can also be started to toggle switch and pulled to running position, recycle oil
Start, external circulating filtration system operation.
Testboard control unit, parameter display unit and electric unit are concentrated on a console specially designed by the present invention
On, the console and hydraulic system are partially attached to one, make that whole hydraulic means testboard is easy to operate, conveniently moving.This
After invention is to meet the maintenance of the hydraulic test of the various uses such as ROV manipulators, propeller, hydraulic jack, hydraulic motor
Test uses, and can not only meet flow, pressure and other parameters requirement, and can realize the accurate adjustable of above-mentioned parameter, this
Application of result will greatly improve ROV trouble free service efficiency in the test of ROV daily maintenances.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the present invention.It is all in the present invention
Spirit and principle within made any modification, equivalent substitution and improvements, extension etc., be all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of ROV small-sized hydraulics testboard, it is characterised in that including fuel tank (1), the liquid support and installation on the bracket
Press pump (2), oil return box (7), solenoid directional control valve (9), pile-up valve A (11), pile-up valve B (10) and console, wherein hydraulic pump (2)
Inlet port connected with fuel tank (1), the oil discharge outlet of the hydraulic pump (2) passes through main oil feed line (15) and solenoid directional control valve (9)
Oil inlet (P) connection, the oil return opening (T) of the solenoid directional control valve (9) connected by return line (19) with oil return box (7),
The first actuator port (C) and the second actuator port (D) of the solenoid directional control valve (9) are by two branch lines respectively with integrating
Valve A (11) connects with pile-up valve B (10), the pile-up valve A (11) and pile-up valve B (10) and the oil inlet and oil return pipeline of load to be tested
Connection, the hydraulic pump (2), solenoid directional control valve (9), pile-up valve A (11) and pile-up valve B (10) are connected with the console.
2. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that set on the main oil feed line (15)
Have a bypass conduit (18), the bypass conduit (18) is provided with overflow valve (6) and pressure-regulating valve (5), the overflow valve (6) and
Pressure-regulating valve (5) is connected with the console.
3. ROV small-sized hydraulics testboard according to claim 1 or 2, it is characterised in that on the main oil feed line (15)
Provided with flowmeter (8) and pressure gauge.
4. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that the testboard further comprises outer
Circulating filtration system is put, the external circulating filtration system includes circulating pump (3), filter (4) and circulation line, wherein
Circulating pump (3) and filter (4) are arranged on the support, and are connected by circulation line, the both ends of the circulation line
Connected with the fuel tank (1), form closed loop cycle pipeline, the circulating pump (3) is connected with the console.
5. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that the return line (19) is provided with
Stop valve and cooling system.
6. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that the pile-up valve A (11) and pile-up valve
B (10) includes multigroup output channel, stop valve is equipped with each output channel, and the end of each output channel is all provided with
There is connector.
7. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that the testboard further comprises leading to
Cross the draining pile-up valve (12) that drain line (20) connects with the fuel tank (1), the draining pile-up valve (12) be used for it is to be measured
The drain tap connection of load.
8. ROV small-sized hydraulics testboard according to claim 7, it is characterised in that the draining pile-up valve (12) includes
Two groups of output channels, stop valve is equipped with each output channel.
9. ROV small-sized hydraulics testboard according to claim 1, it is characterised in that the solenoid directional control valve (9) is three
Four-way electromagnetic reversing valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710722284.9A CN107489666A (en) | 2017-08-23 | 2017-08-23 | ROV small-sized hydraulic testboards |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710722284.9A CN107489666A (en) | 2017-08-23 | 2017-08-23 | ROV small-sized hydraulic testboards |
Publications (1)
Publication Number | Publication Date |
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CN107489666A true CN107489666A (en) | 2017-12-19 |
Family
ID=60646532
Family Applications (1)
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CN201710722284.9A Pending CN107489666A (en) | 2017-08-23 | 2017-08-23 | ROV small-sized hydraulic testboards |
Country Status (1)
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CN (1) | CN107489666A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109253131A (en) * | 2018-10-10 | 2019-01-22 | 武汉科技大学 | Governor valve test macro and test method |
CN109268344A (en) * | 2018-10-24 | 2019-01-25 | 武汉科技大学 | A kind of governor valve Instantaneous Flow test device and its test method |
CN109342050A (en) * | 2018-12-20 | 2019-02-15 | 潍柴动力股份有限公司 | A kind of multi-mode multiple directional control valve Performance Test System and test method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103967870A (en) * | 2014-05-23 | 2014-08-06 | 济宁职业技术学院 | Hydraulic cylinder test platform |
CN203784021U (en) * | 2014-04-28 | 2014-08-20 | 泸州沱江液压件有限公司 | Multifunctional comprehensive hydraulic experiment device |
KR20140105210A (en) * | 2013-02-22 | 2014-09-01 | 한전케이피에스 주식회사 | A test instrument for servomotor |
CN104847738A (en) * | 2015-06-03 | 2015-08-19 | 宁波恒力液压股份有限公司 | Parallel energy-saving technology based high-frequency single-acting hydraulic cylinder durability test device and method |
CN105275921A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Aviation hydraulic test system |
CN106122171A (en) * | 2016-07-13 | 2016-11-16 | 安徽禄讯电子科技有限公司 | A kind of hydraulic valve performance test experiment table |
-
2017
- 2017-08-23 CN CN201710722284.9A patent/CN107489666A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140105210A (en) * | 2013-02-22 | 2014-09-01 | 한전케이피에스 주식회사 | A test instrument for servomotor |
CN203784021U (en) * | 2014-04-28 | 2014-08-20 | 泸州沱江液压件有限公司 | Multifunctional comprehensive hydraulic experiment device |
CN103967870A (en) * | 2014-05-23 | 2014-08-06 | 济宁职业技术学院 | Hydraulic cylinder test platform |
CN104847738A (en) * | 2015-06-03 | 2015-08-19 | 宁波恒力液压股份有限公司 | Parallel energy-saving technology based high-frequency single-acting hydraulic cylinder durability test device and method |
CN105275921A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Aviation hydraulic test system |
CN106122171A (en) * | 2016-07-13 | 2016-11-16 | 安徽禄讯电子科技有限公司 | A kind of hydraulic valve performance test experiment table |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109253131A (en) * | 2018-10-10 | 2019-01-22 | 武汉科技大学 | Governor valve test macro and test method |
CN109268344A (en) * | 2018-10-24 | 2019-01-25 | 武汉科技大学 | A kind of governor valve Instantaneous Flow test device and its test method |
CN109342050A (en) * | 2018-12-20 | 2019-02-15 | 潍柴动力股份有限公司 | A kind of multi-mode multiple directional control valve Performance Test System and test method |
CN109342050B (en) * | 2018-12-20 | 2020-11-20 | 潍柴动力股份有限公司 | Multi-mode multi-way reversing valve performance test system and test method |
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