CN104454788B - A kind of test platform for energy conversion unit - Google Patents
A kind of test platform for energy conversion unit Download PDFInfo
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- CN104454788B CN104454788B CN201410590104.2A CN201410590104A CN104454788B CN 104454788 B CN104454788 B CN 104454788B CN 201410590104 A CN201410590104 A CN 201410590104A CN 104454788 B CN104454788 B CN 104454788B
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of test platform for energy conversion unit, including: hydraulic oil container, external pumping plant, proportional velocity regulating valve, counterbalance valve A, counterbalance valve B, alternating current generator, pressure oil pump, overflow valve A, overflow valve B, overflow valve C and two position and four-way reversing valves.Energy conversion unit motor-side inlet port is connected in series with pressure oil pump oil-out, and overflow valve A is in parallel with overflow valve B, for system pressure regulating.Energy conversion unit pump side oil-in is connected in series with external pumping plant.Energy conversion unit motor-side oil-out is connected in series with proportional velocity regulating valve, and proportional velocity regulating valve is used for simulating motor load.Present invention achieves and test while energy conversion unit bilateral performance.
Description
Technical field
The present invention relates to the test platform of a kind of hydraulic pump, a kind of test platform for energy conversion unit.
Background technology
Pumping function test platform conventional outside Present Domestic typically by hydraulic oil container, check valve, proportional velocity regulating valve, frequency conversion motor,
Pressure gauge, pressure transducer, temperature sensor, effusion meter, the filter of oil suction oil, the filter of oil return oil and hydraulic oil filter composition, variable-frequency electric
Machine drives and is rotated by pump testing, by pump testing oil suction from hydraulic oil container, is converted into hydraulic oil, and hydraulic oil returns after entering proportional velocity regulating valve
To hydraulic oil container.Proportional velocity regulating valve can change openings of sizes as desired to simulate different loads.Existing pump function test platform
Maximum deficiency is to test the performance of energy conversion unit pump side, it is impossible to energy conversion unit pump side and the property of motor-side
Can test simultaneously.
Summary of the invention
Present invention aim at providing a kind of test platform for energy conversion unit, solving existing pump function test platform can only
The performance of test energy conversion unit pump side, it is impossible to that tests the performance of energy conversion unit pump side and motor-side asks simultaneously
Topic.
A kind of test platform for energy conversion unit, including: hydraulic oil container, proportional velocity regulating valve, check valve A, check valve B,
Check valve C, check valve D, check valve E, check valve F, check valve G, Pressure gauge A, Pressure gauge B, Pressure gauge C, pressure
Table D, pressure transducer A, pressure transducer B, pressure transducer C, pressure transducer D, pressure transducer E, temperature sensing
Device, effusion meter A, effusion meter B, effusion meter C, oil suction oil filter A, oil suction oil filter B, hydraulic oil filter A, hydraulic oil are filtered B and return
Oil oil filter, also includes: external pumping plant, counterbalance valve A, counterbalance valve B, alternating current generator, pressure oil pump, overflow valve A, overflow valve
B, overflow valve C, manual ball valve A, manual ball valve B, manual ball valve C, manual ball valve D, manual ball valve E, manual ball valve F
With two position and four-way reversing valves.Hydraulic oil container is threadeded by pipeline with the oil-in of oil suction oil filter A, and oil suction oil filter A's is fuel-displaced
Mouth is connected by hard tube with the inlet port of pressure oil pump.Alternating current generator output shaft is connected by shaft coupling with pressure oil pump power shaft.
The high-pressure mouth of pressure oil pump oil-in with check valve A, check valve B respectively is threadeded by pipeline, and check valve A's is fuel-displaced
Mouth is connected by pipeline with hydraulic oil container, and the entry sequence of the oil-out of check valve B and two hydraulic oil filters is connected by pipeline,
The oil-in of overflow valve A is connected by pipe joint screw thread with the high-pressure mouth of pressure oil pump, Pressure gauge A, pressure transducer A, overflow
The oil-out that the oil-in of valve B filters A with hydraulic oil successively by pipeline is threadeded.The oil-out of hydraulic oil filter B and manual ball
The oil-in of valve A is connected by pipeline, and the oil-out of manual ball valve A passes through pipe with the pump side inlet port of tested energy conversion unit
Road connects.The pump side oil-out of tested energy conversion unit is connected by pipeline with the oil-in of manual ball valve E, manual ball valve E
Oil-out, the oil inlet and outlet of check valve F, temperature sensor, Pressure gauge C, pressure transducer C, the turnover of proportional velocity regulating valve
The oil-in of hydraulic fluid port and effusion meter A is sequentially connected in series by pipe joint and pipeline, the oil-out of effusion meter A and the filter of oil return oil
Oil-in is connected by pipeline, and the oil-out of oil return oil filter is connected by pipeline with hydraulic oil container；The oil-out of check valve C, list
It is sequentially connected in series by pipe joint to the oil inlet and outlet of valve F, the oil-out of overflow valve C, the oil-out of overflow valve C and oil return
The oil-in of oil filter is connected by pipeline.Oil suction oil filter B is placed in hydraulic oil container inside and connects with screw, and oil suction oil filter B goes out
Hydraulic fluid port is connected by pipeline with the inlet port of external pumping plant, the high pressure hydraulic fluid port of external pumping plant, pressure transducer E, Pressure gauge D, hands
The oil-in of the oil inlet and outlet of dynamic ball valve B and the motor-side of tested energy conversion unit is sequentially connected with by pipe joint and pipeline.Quilt
The oil-out of motor-side surveying energy conversion unit is connected by pipeline with the oil-in of manual ball valve F, and manual ball valve F's is fuel-displaced
Mouth, the oil inlet and outlet of check valve G, pressure transducer D, the oil inlet and outlet of counterbalance valve A and effusion meter B oil-in are connect by pipe
Head and pipeline are sequentially connected in series.The bilateral drain tap of tested energy conversion unit respectively with oil inlet and outlet, the hands of manual ball valve C
The oil-in of dynamic ball valve D is connected by pipeline, and the oil-out of manual ball valve C and the A hydraulic fluid port of two position and four-way reversing valves pass through pipeline
The B hydraulic fluid port of connection, the oil-out of manual ball valve D and two position and four-way reversing valves connects, the P mouth of two position and four-way reversing valves, pressure
Table B, pressure transducer B, the oil inlet and outlet of check valve E and effusion meter C oil-in are sequentially connected in series by pipe joint and pipeline；
The T mouth of two position and four-way reversing valves is connected by pipeline with the oil-in of check valve D；The oil-out of effusion meter C, check valve D
Oil-out is connected in parallel by pipe joint, and the oil-in with counterbalance valve B is connected in series by pipeline afterwards, and counterbalance valve B's is fuel-displaced
Mouth is connected by pipeline with hydraulic oil container.
This hydraulic pressure system altogether two loop compositions, loop one is motor-side test loop, and loop two is pump side test loop, loop
One and loop two working connection separate, the pressure transducer B of tested energy conversion unit bilateral drain tap, Pressure gauge B, flow
Meter C is that two loops are public, is switched over by two-position three-way valve.Loop one, motor-side is provided hydraulic oil by external pumping plant,
The motor promoting motor-side rotates, and by power transmission shaft, drives pump side to rotate, produces hydraulic oil, completes energy conversion.Motor-side
Outlet fluid returns to hydraulic oil container by counterbalance valve, and in loop, each Pressure gauge, pressure transducer, effusion meter are used for testing every property
Can data.Loop two, is carried out supercharging and filtration by pressure oil pump, the filter of oil suction oil to pump side inlet port fluid, and two overflow valves are used
In pressure regulation with guarantee that system pressure is in below safe pressure, being adjusted its set pressure, check valve A in parallel therewith uses
Facilitate in time preventing booster pump output flow deficiency energy conversion unit pump side directly from hydraulic oil container oil suction to prevent suction.Pump side
The load that outlet hydraulic oil forms through proportional velocity regulating valve and overflow valve C returns to hydraulic oil container, each pressure, temperature sensing in loop
Device, effusion meter are used for testing properties data.
This test platform is achieved by two separate loops complete energy conversion unit two-sided test simultaneously, it is possible to one
The properties of secondary property test energy conversion unit.Meanwhile, pressure oil pump is used to coordinate overflow valve that pump side inlet port fluid is carried out
Supercharging, to prevent the suction of pump side.It is respectively mounted manual ball valve at each pipeline of tested energy conversion unit, facilitates it to dismount；System
In each overflow valve and proportional velocity regulating valve load equal scalable, to facilitate the test to different performance Parameter Energy converting unit, have
The strongest motility and versatility.
Accompanying drawing explanation
The schematic diagram of a kind of test platform for energy conversion unit of Fig. 1.
1. alternating current generator 2. pressure oil pump 3. oil suction oil filter A 4. oil suction oil filter B 5. overflow valve A 6. overflow valve B 7. overflow
Valve C 8. check valve A 9. check valve B 10. check valve C 11. check valve D 12. check valve E 13. check valve F 14.
Check valve G 15. hydraulic oil filter A 16. hydraulic oil filter B 17. proportional velocity regulating valve 18. counterbalance valve A 19. counterbalance valve B 20.
Effusion meter A 21. effusion meter B 22. effusion meter C 23. manual ball valve A 24. manual ball valve B 25. manual ball valve C 26.
Manual ball valve D 27. manual ball valve E 28. manual ball valve F 29. oil return oil is filtered 31. two four-ways of 30. hydraulic oil container and is changed
To the tested energy conversion unit of valve 32. 33. external pumping plant 34. pressure transducer A 35. pressure transducer B 36. pressure
Sensor C 37. pressure transducer D 38. pressure transducer E 39. Pressure gauge A 40. Pressure gauge B 41. Pressure gauge C
42. Pressure gauge D 43. temperature sensors
Detailed description of the invention
A kind of test platform for energy conversion unit, including: hydraulic oil container 30, proportional velocity regulating valve 17, check valve A8,
Check valve B9, check valve C10, check valve D11, check valve E12, check valve F13, check valve G14, Pressure gauge A39,
Pressure gauge B40, Pressure gauge C41, Pressure gauge D42, pressure transducer A34, pressure transducer B35, pressure transducer C36,
Pressure transducer D37, pressure transducer E38, temperature sensor 43, effusion meter A20, effusion meter B21, effusion meter C22,
Oil suction oil filter A3, oil suction oil filter B4, oil return oil filter 29, hydraulic oil filter A15, hydraulic oil filter B16, also include that the tested energy turns
Change unit 32, external pumping plant 33, counterbalance valve A18, counterbalance valve B19, alternating current generator 1, pressure oil pump 2, overflow valve A5,
Overflow valve B6, overflow valve C7, two position and four-way reversing valves 31, manual ball valve A23, manual ball valve B24, manual ball valve C25,
Manual ball valve D26, manual ball valve E27, manual ball valve F28.Hydraulic oil container 30 passes through pipeline with the oil-in of oil suction oil filter A3
Threaded, the oil-out of oil suction oil filter A3 is connected by hard tube with the inlet port of pressure oil pump 2.Alternating current generator 1 output shaft with
Pressure oil pump 2 power shaft is connected by shaft coupling.The high-pressure mouth of pressure oil pump 2 respectively with check valve A8, the entering of check valve B9
Hydraulic fluid port is threaded by pipeline, and the oil-out of check valve A8 is connected by pipeline with hydraulic oil container 30, and check valve B9's is fuel-displaced
Mouth is connected by pipeline with the entry sequence of two hydraulic oils filters 15,16, the oil-in of overflow valve A5 and the height of pressure oil pump 2
Pressure mouth is connected by pipe joint screw thread, and Pressure gauge A39, pressure transducer A34, the oil-in of overflow valve B6 pass through pipeline successively
Threaded with the oil-out of hydraulic oil filter A15.The oil-out of hydraulic oil filter B16 and the oil-in of manual ball valve A23 are by pipe
Road connects, and the oil-out of manual ball valve A23 is threadeded by pipeline with the pump side inlet port of tested energy conversion unit 32.Quilt
The pump side oil-out surveying energy conversion unit 32 is connected by pipeline with the oil-in of manual ball valve E27, and manual ball valve E27 goes out
Hydraulic fluid port, the oil inlet and outlet of check valve F13, temperature sensor 43, Pressure gauge C41, pressure transducer C36, proportional velocity regulating valve
Oil inlet and outlet and the effusion meter A20 oil-in of 17 are sequentially connected in series by pipe joint and pipeline, and the oil-out of effusion meter A20 leads to
Crossing pipeline to threaded with the oil-in of oil return oil filter 29, the oil-out of oil return oil filter 29 is connected by pipeline with hydraulic oil container 30；
The oil-out of check valve C10, the oil inlet and outlet of check valve F13, the oil-out of overflow valve C7 are sequentially connected in series by pipe joint,
The oil-out of overflow valve C7 is threadeded by the oil-in of pipeline with oil return oil filter 29.Oil suction oil filter B4 is placed in hydraulic oil container
30 inside also connect with screw, and the B4 oil-out of oil suction oil filter is connected by pipeline with the inlet port of external pumping plant 33, external pump
Stand 33 high pressure hydraulic fluid port, pressure transducer E38, Pressure gauge D42, the oil inlet and outlet of manual ball valve B24 and tested energy conversion
The motor-side oil-in of unit 32 is sequentially connected with by pipe joint and pipeline.The motor-side oil-out of tested energy conversion unit 32
Be connected by pipeline with the oil-in of manual ball valve F28, the oil-out of manual ball valve F28, the oil inlet and outlet of check valve G14,
Pressure transducer D37, the oil inlet and outlet of counterbalance valve A18 and effusion meter B21 oil-in are sequentially connected in series even by pipe joint and pipeline
Connect.The bilateral drain tap of tested energy conversion unit 32 respectively with the oil inlet and outlet of manual ball valve C25, the entering of manual ball valve D26
Hydraulic fluid port is connected by pipeline, and the oil-out of manual ball valve C25 and the A hydraulic fluid port of two position and four-way reversing valves 31 are connected by pipeline, hands
The B hydraulic fluid port of dynamic ball valve D26 oil-out and two position and four-way reversing valves 31 connects, the P mouth of two position and four-way reversing valves 31, Pressure gauge
The oil-in of B40, pressure transducer B35, the oil inlet and outlet of check valve E12 and effusion meter C22 is by pipe joint and pipeline successively
It is connected in series；The T mouth of two position and four-way reversing valves 31 is connected by pipeline with the oil-in of check valve D11；Effusion meter C22 goes out
Hydraulic fluid port, the oil-out of check valve D11 are connected in parallel by pipe joint, and the oil-in with counterbalance valve B19 passes through pipe joint string afterwards
Connection connects, and the oil-out of counterbalance valve B19 is connected by pipeline with hydraulic oil container 30.
When doing efficiency test, open manual ball valve A23, manual ball valve B24, manual ball valve C25, manual ball valve D26, manually
Ball valve E27, manual ball valve F28, by tested energy conversion unit 32 performance parameter value set pump side oil-in overflow valve B6,
Housing oil return opening counterbalance valve B19, motor return oil pressure valve A18.Start alternating current generator 1 and external pumping source 33, regulation ratio successively
Example flow speed control valve 17 parameter, draws efficiency, flow, the pressure-dependent characteristic curve of power.Remaining test, can turn according to energy
Change unit design parameter, tested by similar procedure.
Claims (1)
1. for the test platform of energy conversion unit, including: hydraulic oil container (30), proportional velocity regulating valve (17), unidirectional
Valve A (8), check valve B (9), check valve C (10), check valve D (11), check valve E (12), check valve F (13),
Check valve G (14), Pressure gauge A (39), Pressure gauge B (40), Pressure gauge C (41), Pressure gauge D (42), pressure sensing
Device A (34), pressure transducer B (35), pressure transducer C (36), pressure transducer D (37), pressure transducer E (38),
Temperature sensor (43), effusion meter A (20), effusion meter B (21), effusion meter C (22), oil suction oil filter A (3), oil suction
Oil filter B (4), hydraulic oil filter A (15), hydraulic oil filter B (16) and oil return oil filter (29), it is characterised in that also include: outer
Connect pumping plant (33), counterbalance valve A (18), counterbalance valve B (19), alternating current generator (1), pressure oil pump (2), overflow valve A (5),
Overflow valve B (6), overflow valve C (7), manual ball valve A (23), manual ball valve B (24), manual ball valve C (25), manually
Ball valve D (26), manual ball valve E (27), manual ball valve F (28) and two position and four-way reversing valves (31)；Hydraulic oil container (30)
Threadeded by pipeline with the oil-in of oil suction oil filter A (3), the oil-out of oil suction oil filter A (3) and pressure oil pump (2)
Inlet port connected by hard tube；Alternating current generator (1) output shaft is connected by shaft coupling with pressure oil pump (2) power shaft；Increase
The high-pressure mouth of pressure oil pump (2) oil-in with check valve A (8), check valve B (9) respectively is threadeded by pipeline, unidirectional
The oil-out of valve A (8) is connected by pipeline with hydraulic oil container (30), the oil-out of check valve B (9) and two hydraulic oil filters
Entry sequence connected by pipeline, the high-pressure mouth of the oil-in of overflow valve A (5) and pressure oil pump (2) is by pipe joint spiral shell
Stricture of vagina connect, Pressure gauge A (39), pressure transducer A (34), overflow valve B (6) oil-in by pipeline successively with high pressure
The oil-out of oil filter A (15) is threaded；The oil-out of hydraulic oil filter B (16) leads to the oil-in of manual ball valve A (23)
Crossing pipeline to connect, the oil-out of manual ball valve A (23) passes through pipeline with the pump side inlet port of tested energy conversion unit (32)
Connect；The pump side oil-out of tested energy conversion unit (32) is connected by pipeline with the oil-in of manual ball valve E (27),
The oil-out of manual ball valve E (27), the oil inlet and outlet of check valve F (13), temperature sensor (43), pressure transducer C
(36), the oil-in of Pressure gauge C (41), the oil inlet and outlet of proportional velocity regulating valve (17) and effusion meter A (20) passes through pipe joint
Being sequentially connected in series with pipeline, the oil-out of effusion meter A (20) is connected by pipeline with the oil-in of oil return oil filter (29),
The oil-out of oil return oil filter (29) is connected by pipeline with hydraulic oil container (30)；The oil-out of check valve C (10), unidirectional
The oil inlet and outlet of valve F (13), the oil-out of overflow valve C (7) are sequentially connected in series by pipe joint, overflow valve C's (7)
Oil-out is connected by pipeline with the oil-in of oil return oil filter (29)；It is internal that oil suction oil filter B (4) is placed in hydraulic oil container (30)
And be connected by screw, the oil-out of oil suction oil filter B (4) is connected by pipeline with the inlet port of external pumping plant (33), external
The high pressure hydraulic fluid port of pumping plant (33), pressure transducer E (38), Pressure gauge D (42), the oil inlet and outlet of manual ball valve B (24)
It is sequentially connected with by pipe joint and pipeline with the oil-in of the motor-side of tested energy conversion unit；The horse of tested energy conversion unit
The oil-in of the oil-out and manual ball valve F (28) that reach side is connected by pipeline, the oil-out of manual ball valve F (28), unidirectional
The oil inlet and outlet of valve G (14), pressure transducer D (37), the oil inlet and outlet of counterbalance valve A (18) and effusion meter B's (21)
Oil-in is sequentially connected in series by pipe joint and pipeline；The bilateral drain tap of tested energy conversion unit (32) respectively with manually
The oil inlet and outlet of ball valve C (25), the oil-in of manual ball valve D (26) are connected by pipeline, going out of manual ball valve C (25)
The A hydraulic fluid port of hydraulic fluid port and two position and four-way reversing valves (31) is by pipeline connection, the oil-out of manual ball valve D (26) and two four
The B hydraulic fluid port of logical reversal valve (31) connects, the P mouth of two position and four-way reversing valves (31), Pressure gauge B (40), pressure transducer
B (35), the oil inlet and outlet of check valve E (12) and effusion meter C (22) oil-in are sequentially connected in series by pipe joint and pipeline；
The T mouth of two position and four-way reversing valves (31) is connected by pipeline with the oil-in of check valve D (11)；Going out of effusion meter C (22)
Hydraulic fluid port, the oil-out of check valve D (11) are connected in parallel by pipe joint, and the oil-in with counterbalance valve B (19) passes through pipe afterwards
Road is connected in series, and the oil-out of counterbalance valve B (19) is connected by pipeline with hydraulic oil container (30)；
This test platform totally two loop compositions, loop one is motor-side test loop, and loop two is pump side test loop, loop
One and loop two working connection separate, the pressure transducer B (35) of tested energy conversion unit (32) bilateral drain tap, pressure
Power table B (40), effusion meter C (22) are that two loops are public, are switched over by two-position three-way valve；Loop one, motor-side
Thered is provided hydraulic oil by external pumping plant (33), promote the motor of motor-side to rotate, by power transmission shaft, drive pump side to rotate, produce
Hydraulic oil, completes energy conversion；Motor-side outlet fluid returns to hydraulic oil container (30) by counterbalance valve, each Pressure gauge in loop,
Pressure transducer, effusion meter are used for testing properties data；Loop two, is inhaled pump side by pressure oil pump (2), the filter of oil suction oil
Hydraulic fluid port fluid carries out supercharging and filtration, and two overflow valves for pressure regulation and guarantee that system pressure is in below safe pressure, adjust it
Constant-pressure is adjusted, and check valve A (8) in parallel therewith is used for preventing from facilitating energy conversion single during booster pump output flow deficiency
Unit pump side directly from hydraulic oil container (30) oil suction to prevent suction；Pump side outlet hydraulic oil through proportional velocity regulating valve (17) and overflows
The load that stream valve C (7) forms returns to hydraulic oil container (30), and in loop, each pressure, temperature sensor (43), effusion meter are used for
Test properties data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590104.2A CN104454788B (en) | 2014-10-29 | 2014-10-29 | A kind of test platform for energy conversion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410590104.2A CN104454788B (en) | 2014-10-29 | 2014-10-29 | A kind of test platform for energy conversion unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454788A CN104454788A (en) | 2015-03-25 |
| CN104454788B true CN104454788B (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410590104.2A Active CN104454788B (en) | 2014-10-29 | 2014-10-29 | A kind of test platform for energy conversion unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500133A (en) * | 1975-12-30 | 1978-02-08 | Secr Defence | Hydraulic test equipment |
| CN200964977Y (en) * | 2006-11-10 | 2007-10-24 | 山西太钢不锈钢股份有限公司 | Hydraulic spare parts pressurization station |
| CN103867533A (en) * | 2014-03-26 | 2014-06-18 | 上海电气液压气动有限公司 | Hydraulic test system of railway tamping device |
| CN203717534U (en) * | 2013-12-30 | 2014-07-16 | 北京经纬恒润科技有限公司 | Test experiment table for ESP hydraulic system |
| CN104019083A (en) * | 2014-06-23 | 2014-09-03 | 镇江杭川机械制造有限公司 | Hydraulic testing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02278137A (en) * | 1989-04-19 | 1990-11-14 | Kobe Steel Ltd | Method and apparatus for testing characteristic of hydraulic valve |
-
2014
- 2014-10-29 CN CN201410590104.2A patent/CN104454788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1500133A (en) * | 1975-12-30 | 1978-02-08 | Secr Defence | Hydraulic test equipment |
| CN200964977Y (en) * | 2006-11-10 | 2007-10-24 | 山西太钢不锈钢股份有限公司 | Hydraulic spare parts pressurization station |
| CN203717534U (en) * | 2013-12-30 | 2014-07-16 | 北京经纬恒润科技有限公司 | Test experiment table for ESP hydraulic system |
| CN103867533A (en) * | 2014-03-26 | 2014-06-18 | 上海电气液压气动有限公司 | Hydraulic test system of railway tamping device |
| CN104019083A (en) * | 2014-06-23 | 2014-09-03 | 镇江杭川机械制造有限公司 | Hydraulic testing system |
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| Publication number | Publication date |
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| CN104454788A (en) | 2015-03-25 |
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