CN209354447U - Hydraulic clamping system for pump test - Google Patents
Hydraulic clamping system for pump test Download PDFInfo
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- CN209354447U CN209354447U CN201822258500.1U CN201822258500U CN209354447U CN 209354447 U CN209354447 U CN 209354447U CN 201822258500 U CN201822258500 U CN 201822258500U CN 209354447 U CN209354447 U CN 209354447U
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Abstract
This application discloses a kind of hydraulic clamping systems for pump test, are related to pump test field.Hydraulic clamping system includes: fuel tank, hydraulic power supply and hydraulic clamp, the fuel tank is for storing hydraulic oil, the hydraulic power supply is connected with the fuel tank and the hydraulic clamp, for providing predetermined pressure to the hydraulic clamp and keeping the hydraulic oil of predetermined pressure, the hydraulic clamp is also used to connect water pipe as the water pump and provides test water for connecting and clamping water pump.The hydraulic clamping system of the application uses hydraulic clamp structure for the inlet and outlet of water pump, it stablizes with performance, sealing effect is good when test, easy to operate advantage, therefore hydraulic clamping system is used to carry out exfactory inspection to water pump, detection efficiency is effectively increased, labor intensity is reduced, to meet on-site test demand.
Description
Technical field
This application involves pump test fields, more particularly to a kind of hydraulic clamping system for pump test.
Background technique
When traditional test installation of pump is tested, unit fixed on water pump suction and outlet need and the connection of corresponding pipeline.Due to being
Coupled using bolt flange, need manually to apply stubborn bolt, not only labor intensity of workers is high, and time-consuming and laborious, and detection is caused to be imitated
Rate is low.And for the product export testing stand of batch detection, this connecting mode is increasingly unable to satisfy on-site test
It is required that.
Therefore, it needs to develop one kind and can reduce labor intensity, improve the clamping system of detection efficiency.
Utility model content
Aiming to overcome that the above problem or at least being partially solved or extenuate for the application solves the above problems.
This application provides a kind of hydraulic clamping systems for pump test, comprising: fuel tank, hydraulic power supply and hydraulic
Clamping device, the fuel tank is for storing hydraulic oil, the hydraulic power supply and the fuel tank and the hydraulic clamp phase
Even, for providing predetermined pressure to the hydraulic clamp and keeping the hydraulic oil of predetermined pressure, the hydraulic clamp
For connecting and clamping water pump, it is also used to connect water pipe as the water pump and test water is provided.
Optionally, the hydraulic power supply includes Variable plunger pump, motor, check valve, electromagnetic relief valve, the first resistance to vibration pressure
Power table, the second resistance to vibration pressure gauge, superposition pressure reducing valve, the first solenoid directional control valve, the second solenoid directional control valve, the double unidirectional sections of the first superposition
Flow valve, the second superposition Double throttle check valve, the first hydraulic control one-way valve, the second hydraulic control one-way valve, first pressure relay and second
Pressure switch, wherein the motor is connected with the Variable plunger pump, for driving the Variable plunger pump, the electromagnetism
Overflow valve has electromagnet DT0, and each solenoid directional control valve is three-position four-way electromagnetic directional valve, has A, B, P, T tetra- mouths, electricity
Magnet DT1 and electromagnet DT2, each superposition Double throttle check valve include corresponding left Double throttle check valve and right double unidirectional sections
Valve is flowed, the electromagnetic relief valve is connected to the P mouth of the first superposition Double throttle check valve and described second and is superimposed double unidirectional sections
Between the T mouth for flowing valve, the first resistance to vibration pressure gauge is mounted at the electromagnetic relief valve, the second resistance to vibration pressure gauge installation
At the superposition pressure reducing valve, the first pressure relay is mounted on the rear end of first hydraulic control one-way valve, and described second
Pressure switch is mounted on the rear end of second hydraulic control one-way valve；
The hydraulic clamp includes the first hydraulic clamp and the second hydraulic clamp, first hydraulic clip
Tight device includes the first hollow rod oil cylinder and the second hollow rod oil cylinder, and second hydraulic clamp includes third hollow stem oil
The predetermined pressure of cylinder and the 4th hollow rod oil cylinder, first hydraulic clamp is greater than the pre- of second hydraulic clamp
Constant-pressure；
Described Variable plunger pump one end is connected with the fuel tank, and the Variable plunger pump other end is through the check valve, institute
State the P mouth and A mouthfuls, the left Double throttle check valve of the first superposition Double throttle check valve, described first of the first solenoid directional control valve
Hydraulic control one-way valve is to the described first hollow rod oil cylinder, the entrance phase of the second hollow rod oil cylinder and first hydraulic control one-way valve
Even；
Right Double throttle check valve and described the of the first hollow rod oil cylinder through the first superposition Double throttle check valve
The B mouth of one solenoid directional control valve is connected to the fuel tank with T mouthfuls；
A left side of the hollow rod oil cylinder of third through second hydraulic control one-way valve, the second superposition Double throttle check valve is double
One-way throttle valve, the A mouth of second solenoid directional control valve, P mouthfuls, the superposition pressure reducing valve (10.1) to first electromagnetic switch
The P mouth front end of valve, the 4th hollow rod oil cylinder are connected with the entrance of second hydraulic control one-way valve；
Right Double throttle check valve and described the of the hollow rod oil cylinder of third through the second superposition Double throttle check valve
The B mouth of two solenoid directional control valves is connected to the fuel tank with T mouthfuls；
First hydraulic control one-way valve is connect with the described second hollow rod oil cylinder signal, second hydraulic control one-way valve and institute
State the 4th hollow rod oil cylinder signal connection.
Optionally, first hydraulic clamp is configured to testing beam diameter in 100~Φ of Φ, 150 water pump, and described first
The electromagnet DT2 of solenoid directional control valve obtain it is electric, the electromagnet DT0 of the electromagnetic relief valve it is automatic it is electric, hydraulic oil press the electromagnetism
The oil pressure fuel feeding of overflow valve setting, pressure oil are hollow to described first through first solenoid directional control valve, the first hydraulic control one-way valve
The pressurization of the fuel feeding of rod oil cylinder and the second hollow rod oil cylinder, the first hollow rod oil cylinder and the second hollow rod oil cylinder
Inside moves toward one another, and is clamped pressurization to the water pump, the first hollow rod oil cylinder oil return is double unidirectional by the first superposition
Throttle valve, it is adjustable by the first superposition Double throttle check valve and set the first hollow rod oil cylinder and described second hollow
The forward speed of rod oil cylinder；
When pressure reaches predetermined pressure, the first pressure relay issues signal, first solenoid directional control valve
Electromagnet DT2 power-off, the electromagnet DT0 of the electromagnetic relief valve also automatically powers off, first hydraulic clamp it is described
First hollow rod oil cylinder and the second hollow rod oil cylinder, which are in, clamps state of pressure keeping, and hydraulic clamping system restores unloading condition,
Can start to test 100~Φ of Φ, 150 water pump；
Wherein, the first pressure relay keeps the monitoring to pressure maintaining chamber, lower than the pressure maintaining lower limit of setting, automatically controls
Ftercompction continues pressure maintaining after reaching the upper limit, with the reliability compressed during guarantee test to the pumping hole of 100~Φ of Φ, 150 water pump.
Optionally, the hydraulic clamping system, in the case where 100~Φ of Φ, 150 pump test terminates state, first liquid
The the described first hollow rod oil cylinder and the second hollow rod oil cylinder for pressing clamping device drive Inside To Outside to move to limit
When position, it is configured to approach switch sending signal, the electromagnet DT1 power-off of first solenoid directional control valve, the electromagnetism overflow
The electromagnet DT0 of valve is also automatically powered off, at this time the first hydraulic clamp stop motion, and the hydraulic clamping system restores
Off-load standby mode.
Optionally, second hydraulic clamp is configured to testing beam diameter in 40~Φ of Φ, 80 water pump, second electricity
The electromagnet DT4 of magnetic reversal valve obtains electric, and the electromagnet DT0 of the electromagnetic relief valve is electricly automatic, and hydraulic oil is excessive by the electromagnetism
The oil pressure fuel feeding of valve setting is flowed, then is adjusted to pressure to be used for the most senior engineer of 80 parallel water pump of bore Φ through the superposition pressure reducing valve
Make pressure, pressure oil is through second solenoid directional control valve, the second hydraulic control one-way valve to the hollow rod oil cylinder of the third and described
Four hollow rod oil cylinder fuel feeding pressurizations, drive the hollow rod oil cylinder of the third and the inside of the 4th hollow rod oil cylinder to transport in opposite directions
It is dynamic, pressurization is clamped in 40~Φ of Φ, 80 water pump to bore, the hollow rod oil cylinder oil return of third is by second superposition
Double throttle check valve is superimposed adjustable Double throttle check valve and the hollow rod oil cylinder of the setting third and institute by described second
State the forward speed of the 4th hollow rod oil cylinder；
When pressure reaches predetermined pressure, the second pressure relay issues signal, second solenoid directional control valve
Electromagnet DT4 power-off, the electromagnet DT0 of the electromagnetic relief valve also automatically powers off, second hydraulic clamp it is described
The hollow rod oil cylinder of third and the 4th hollow rod oil cylinder, which are in, clamps state of pressure keeping, and the hydraulic clamping system restores off-load
State, to start to test 40~Φ of Φ, 80 water pump；
Wherein, the second pressure relay keeps the monitoring to pressure maintaining chamber, lower than the pressure maintaining lower limit of setting, automatically controls
Ftercompction continues pressure maintaining after reaching the upper limit, the reliability compressed with the pumping hole of 40~Φ of Φ, 80 water pump during guarantee test.
Optionally, in the case where off-test, the hollow rod oil cylinder of the third of second hydraulic clamp and
When the 4th hollow rod oil cylinder drives Inside To Outside to move to restraining position, it is configured to approach switch sending signal, institute
The electromagnet DT3 power-off of the second solenoid directional control valve is stated, the electromagnet DT0 of the electromagnetic relief valve is also automatically powered off, described at this time
Second hydraulic clamp stop motion, the hydraulic clamping system restore off-load standby mode, this time off-test.
Optionally, it is also equipped with liquidometer at the fuel tank, for detecting the liquid level of the fuel tank.
Optionally, it is also equipped with air cleaner at the fuel tank, for filtering the air into the fuel tank.
Optionally, the mouth front end T of first solenoid directional control valve and the T mouth front end of second solenoid directional control valve are equipped with
Return oil filter, for filtering the hydraulic oil for returning to the fuel tank.
Optionally, each hydraulic clamp further includes the frame for installing corresponding hollow rod oil cylinder, each hollow stem oil
Cylinder includes corresponding cylinder body, piston rod, the flange connector of inside and the flange connector in outside, and the piston rod setting exists
The inside of the cylinder interior, the piston rod has aquaporin, is used as the inlet and outlet pipe lines of the water pump, the method for the inside
Blue connector and the flange connector in the outside are correspondingly connected at the both ends of the cylinder body, wherein the flange of the inside connects
Fitting with the water pump for being connected, and the flange connector in the outside is for connecting water pipe.
The hydraulic clamping system of the application uses hydraulic clamp structure for the inlet and outlet of water pump, with performance
Stablize, sealing effect good, easy to operate advantage when test, therefore hydraulic clamping system used to carry out exfactory inspection to water pump,
Detection efficiency is effectively increased, labor intensity is reduced, to meet on-site test demand.
In addition, the application is simple and easy to the product testing conversion of different size.
According to the accompanying drawings to the detailed description of the specific embodiment of the application, those skilled in the art will be more
Above-mentioned and other purposes, the advantages and features of the application are illustrated.
Detailed description of the invention
Some specific embodiments of the application are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram according to the hydraulic clamping system for pump test of the application one embodiment；
Fig. 2 is the schematic elevational view of hydraulic clamp shown in Fig. 1；
Fig. 3 is the schematic plan of hydraulic clamp shown in Fig. 2；
Fig. 4 is the schematic side elevation of hydraulic clamp shown in Fig. 2.
Each symbol indicates that meaning is as follows in figure:
100 hydraulic clamping systems,
I hydraulic power supply,
1.1 fuel tanks, 2.2 liquidometers, 3.1 Variable plunger pumps, 4.1 motors, 5.1 air cleaners, 6.1 check valves, 7.1 times
Oily oil filter, 8.1 electromagnetic relief valves, 9.1 first pressure gauges of resistance to vibration, 9.2 second pressure gauges of resistance to vibration, 10.1 superposition pressure reducing valves,
11.1 first solenoid directional control valves, 11.2 second solenoid directional control valves, 12.1 first superposition Double throttle check valves, 12.2 second superpositions are double
One-way throttle valve, 13.1 first hydraulic control one-way valves, 13.2 second hydraulic control one-way valves, 14.1 first pressure relays, 14.2 second
Pressure switch, 15 first hydraulic clamps, 15.1 first hollow rod oil cylinders, 15.2 second hollow rod oil cylinders, 16 second liquid
Pressure clamping device, the hollow rod oil cylinder of 16.1 thirds, 16.2 the 4th hollow rod oil cylinders,
1 cylinder body, the flange connector of 2 insides, the flange connector in 3 outsides, 4 frames, 5 subject water pump locations.
Specific embodiment
Fig. 1 is the schematic diagram according to the hydraulic clamping system for pump test of the application one embodiment.
A kind of hydraulic clamping system 100 for pump test, it is general can include: fuel tank 1.1, hydraulic power supply I and hydraulic clamp
Device (15,16).The fuel tank 1.1 is for storing hydraulic oil.The hydraulic power supply I and the fuel tank 1.1 and described hydraulic
Clamping device (15,16) is connected, for providing predetermined pressure to the hydraulic clamp (15,16) and keeping predetermined pressure
Hydraulic oil.The hydraulic clamp (15,16) is also used to connect water pipe and provides for the water pump for connecting and clamping water pump
Test water.
Hydraulic clamping system 100 is designed as two-way work system, and the maximum working pressure (MWP) of pressure design is 24MPa,
Power source is that the hydraulic oil that Variable plunger pump 3.1 provides is used for 150 parallel water pump of bore Φ through what electromagnetic relief valve 8.1 was set up
Maximum working pressure.
The hydraulic clamping system 100 of the application uses hydraulic clamp (15,16) for the inlet and outlet of water pump, tool
There is performance to stablize, sealing effect good, easy to operate advantage when test, therefore dispatched from the factory using hydraulic clamping system to water pump
It examines, effectively increases detection efficiency, reduce labor intensity, to meet on-site test demand.
As shown in Figure 1, the hydraulic power supply I includes Variable plunger pump 3.1, motor 4.1, check valve in the present embodiment
6.1, the resistance to vibration pressure gauge 9.2 of the 8.1, first resistance to vibration pressure gauge 9.1, second of electromagnetic relief valve, superposition pressure reducing valve 10.1, the first electromagnetism
Reversal valve 11.1, the second solenoid directional control valve 11.2, first superposition Double throttle check valve 12.1, second are superimposed Double throttle check valve
12.2, the first hydraulic control one-way valve 13.1, the second hydraulic control one-way valve 13.2, first pressure relay 14.1 and second pressure relay
14.2.Wherein, the motor 4.1 is connected with the Variable plunger pump 3.1, for driving the Variable plunger pump 3.1.The electricity
Magnetic overflow valve 8.1 has electromagnet DT0.Each solenoid directional control valve (11.1,11.2) is three-position four-way electromagnetic directional valve, is had
A, tetra- mouths of B, P, T, electromagnet DT1 and electromagnet DT2.Each superposition Double throttle check valve (12.1,12.2) includes corresponding to
Left Double throttle check valve and right Double throttle check valve.The electromagnetic relief valve 8.1 is connected to the double unidirectional sections of first superposition
The P mouth of stream valve 12.1 is superimposed between the T mouth of Double throttle check valve 12.1 with described second.The first resistance to vibration pressure gauge 9.1 is pacified
At the electromagnetic relief valve 8.1.The second resistance to vibration pressure gauge 9.2 is mounted at the superposition pressure reducing valve 10.1.It is described
First pressure relay 14.1 is mounted on the rear end of first hydraulic control one-way valve 13.1.The second pressure relay 14.2 is pacified
Mounted in the rear end of second hydraulic control one-way valve 13.2.
The hydraulic clamp (15,16) includes the first hydraulic clamp 15 and the second hydraulic clamp 16.Institute
Stating the first hydraulic clamp 15 includes the first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2.Second hydraulic clip
Tight device 16 includes the hollow rod oil cylinder 16.1 of third and the 4th hollow rod oil cylinder 16.2.First hydraulic clamp 15 it is pre-
Constant-pressure is greater than the predetermined pressure of second hydraulic clamp 16.
Described 3.1 one end of Variable plunger pump is connected with the fuel tank 1.1, described in 3.1 other end of the Variable plunger pump warp
Check valve 6.1, the P mouth of first solenoid directional control valve 11.1 and A mouthfuls, a left side for the first superposition Double throttle check valve 12.1 are double
One-way throttle valve, first hydraulic control one-way valve 13.1 to the described first hollow rod oil cylinder 15.1.The second hollow rod oil cylinder
15.2 are connected with the entrance of first hydraulic control one-way valve 13.1.
Right Double throttle check valve of the first hollow rod oil cylinder 15.1 through the first superposition Double throttle check valve 12.1
And the B mouth of first solenoid directional control valve 11.1 is connected to the fuel tank 1.1 with T mouthfuls.
The hollow rod oil cylinder 16.1 of third is superimposed double one-way throttles through second hydraulic control one-way valve 13.2, described second
The left Double throttle check valve of valve 12.2, the A mouth of second solenoid directional control valve 11.2, P mouthfuls, the superposition pressure reducing valve 10.1 to institute
State the P mouth front end of the first solenoid directional control valve 11.1.The 4th hollow rod oil cylinder 16.2 and second hydraulic control one-way valve 13.2
Entrance be connected.
Right Double throttle check valve of the hollow rod oil cylinder 16.1 of third through the second superposition Double throttle check valve 12.2
And the B mouth of second solenoid directional control valve 11.2 is connected to the fuel tank 1.1 with T mouthfuls.
First hydraulic control one-way valve 13.1 is connect with the described second hollow 15.2 signal of rod oil cylinder.The second hydraulic control list
It is connect to valve 13.2 with the described 4th hollow 16.2 signal of rod oil cylinder.
In the present embodiment, for example, the first hollow pressurization of rod oil cylinder 15.1 is in place, when being exactly that it is moved in place.Thereon
First pressure relay 14.1 increase pressure after, signal is provided, we know that the first hollow rod oil cylinder 15.1 is in place.
In the present embodiment, for example, the first superposition Double throttle check valve 12.1 is two one-way throttle valve combinations.It is so left
Double throttle check valve or right Double throttle check valve are combined by a throttle valve and a check valve.When the left side up
It is the check valve for the left Double throttle check valve for being superimposed Double throttle check valve 12.1 by first when walking, it is hollow by first
Rod oil cylinder 15.1 and then oil back, it is passless in the check valve when walking downward, in this way, adjusting the throttle valve
Openings of sizes can adjust the speed that the first hollow rod oil cylinder 15.1 clamps.Exist in turn, when retracting, through right double unidirectional
The check valve of throttle valve does not have to adjustment, and the check valve of left Double throttle check valve is obstructed, adjustable by adjusting left Double throttle check valve
Speed when whole first hollow rod oil cylinder 15.1 retracts.
Check valve 6.1 is to guarantee that Variable plunger pump 3.1 pumps out the oil come and only unidirectionally supplies upwards, prevents its oil return.
First solenoid directional control valve 11.1, the second solenoid directional control valve 11.2 are three-position four-way electromagnetic directional valves.Wherein it is for P mouthfuls
Oil inlet, T mouthfuls are oil return opening, A mouthfuls and B taste oil outlets.For example, there are two electromagnet for the second solenoid directional control valve 11.2.Second
When the electromagnet DT4 of solenoid directional control valve 11.2 charges when energization to him for the first time, make P mouthfuls and A mouthfuls of oil pressure of oil circuit
Logical oil, oil pressure are up walked, and the hollow rod oil cylinder 16.1 of third clamps.Power-off is just off.The electromagnetism of second solenoid directional control valve 11.2
When iron DT3 third is powered, be left side youngster this cross this change replacement and come, P mouthfuls and B mouthfuls of logical pressure oils, such pressure
Oil unclamps the hollow rod oil cylinder 16.1 of oil cylinder third by walking in B road direction.
Electromagnetic relief valve 8.1 is the combination valve that solenoid valve and overflow valve (being also safety valve) combine.When electromagnetism overflow
When 8.1 electromagnet DT0 of valve is cold, entire electromagnetic relief valve 8.1 is unloading condition, that is to say, that Variable plunger pump 3.1
The oily pneumatics come out, direct oil return box 1.1 is in standby.When only electromagnet DT0 obtains electric, electromagnetic relief valve
8.1 adjustment pressure.
The pressure of hydraulic clamping system 100 is by water outlet, the high pressure of this pump outlet is arranged.So exist
This part of water inlet is that have pressure, but so high, need to make its pressure subtract by being superimposed pressure reducing valve 10.1, reduce to
Suitable pressure.
First hydraulic control one-way valve 13.1, the second hydraulic control one-way valve 13.2 are to guarantee the first hollow rod oil cylinder 15.1 and
Pressure maintaining after the hollow rod oil cylinder 16.1 of two hollow rod oil cylinders 15.2, third and the 4th hollow rod oil cylinder 16.2 clamp.Namely
It says when oil inlet part oil is walked upwards, passes through the first superposition Double throttle check valve 12.1 and the second superposition Double throttle check valve
The check valve of 12.2 left Double throttle check valve is directly into the first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2, third
Hollow rod oil cylinder 16.1 and the 4th hollow rod oil cylinder 16.2, allow the first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2,
The hollow rod oil cylinder 16.1 of third and the 4th hollow rod oil cylinder 16.2 clamp.After being raised to pressure and stopping, which is just sealed pair
The hollow rod oil cylinder 15.1 of first answered and the second hollow rod oil cylinder 15.2, the hollow rod oil cylinder 16.1 of third and the 4th hollow rod oil cylinder
Oil in 16.2 guarantees that its pressure is not fallen, and guarantees that the first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2, third are empty
Core bar oil cylinder 16.1 and the 4th hollow rod oil cylinder 16.2 clamp hydraulic fluid port, this clamping force does not drop.Upon its release, ipsilateral to pressure, institute
State the control signal of the first hydraulic control one-way valve 13.1 and the described second hollow rod oil cylinder 15.2, second hydraulic control one-way valve 13.2
With the control signal of the described 4th hollow rod oil cylinder 16.2, corresponding first hydraulic control one-way valve 13.1 and the second hydraulic control one-way valve
13.2, the check valve reverse opening of corresponding first hydraulic control one-way valve 13.1 and the second hydraulic control one-way valve 13.2 allows first hollow
Rod oil cylinder 15.1 and the hollow rod oil cylinder 16.1 of the second hollow rod oil cylinder 15.2, third and the 4th hollow rod oil cylinder 16.2 return.
First pressure relay 14.1 and second pressure relay 14.2 are the clamping chambers of the corresponding hollow rod oil cylinder of acquisition, when
When this pressure rise, feedback back into electric signals leads to electric electric-control system.
As shown in Figure 1, liquidometer 2.2 is also equipped at the fuel tank in the present embodiment, for detecting the fuel tank 1.1
Liquid level.
When it is implemented, the fuel tank 1.1 of hydraulic clamping system 100 is that dust and pollution prevention is closed in order to prevent.But
When the work of this hydraulic clamping system 100, liquid level has liter to have drop, requires supplementation with and excludes air, want this when
After guaranteeing that the air come in is filtered by air cleaner.
As shown in Figure 1, air cleaner 5.1 is also equipped at the fuel tank in the present embodiment, for filtering described in entrance
The air of fuel tank 1.1.
As shown in Figure 1, the mouth front end T of first solenoid directional control valve 11.1 and second electromagnetism change in the present embodiment
Return oil filter 7.1 is installed to the T mouth front end of valve 11.2, for filtering the hydraulic oil for returning to the fuel tank 1.1.
Fig. 2 is the schematic elevational view of hydraulic clamp shown in Fig. 1.Fig. 3 is the signal of hydraulic clamp shown in Fig. 2
Property top view.Fig. 4 is the schematic side elevation of hydraulic clamp shown in Fig. 2.As in Figure 2-4, in the present embodiment, each liquid
Pressure clamping device (15,16) further include the corresponding hollow rod oil cylinder of installation (15.1,15.2,16.1,16.2) frame 4, it is each
Hollow rod oil cylinder (15.1,15.2,16.1,16.2) includes corresponding cylinder body 1, piston rod, the flange connector 2 of inside and outer
The flange connector 3 of side, the piston rod are arranged inside the cylinder body 1, and the inside of the piston rod has aquaporin, are used as
The inlet and outlet pipe lines of the water pump, the flange connector 2 of the inside and the flange connector 3 in the outside are correspondingly connected in institute
State the both ends of cylinder body, wherein the flange connector 2 of the inside with the water pump for being connected, the flanged joint in the outside
Part 3 is for connecting water pipe.
More specifically, as shown in Fig. 2, being to be symmetrically installed two oil on frame for the first hydraulic clamp 15
The hollow rod oil cylinder 15.1 of cylinder i.e. first and the second hollow rod oil cylinder 15.2.First hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder
15.2 cylinder bodies are fixed on frame.Base of frame is securedly mounted on testing stand element task table top, lower portion dashed region
Domain is to place subject water pump location 5.Hydraulic work on the cylinder body of first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2
Make hydraulic fluid port to be fixedly connected with hydraulic power supply hydraulic fluid port.The piston rod of first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2
It is hollow bar structure, inner passage is the inlet and outlet pipes of parallel water pump.For example, the left end of the first hollow rod oil cylinder 15.1 is
Standard flange connector is the flange connector 3 in outside, it is fixedly connected with inlet pipeline.The right side of second hollow rod oil cylinder 15.2
End is the flange connector 3 that standard flange connector is outside, it is fixedly connected with outlet pipeline.First hollow rod oil cylinder 15.1
Inside with the second hollow rod oil cylinder 15.2 be included sealing with the matched standard flange interface of water pump pumping hole i.e. on the inside of
Flange connector 2, clamping can be completed docks with water pump pumping hole, unclamps i.e. replaceable new by pump testing.Wherein, first is hollow
The pressure tap provided on rod oil cylinder 15.1 can keep connecting by surveying pressure hose with unit fixed on water pump suction pressure measuring unit；Second hollow stem
The pressure tap provided on oil cylinder 15.2 can keep connecting by surveying pressure hose with exit of pump pressure measuring unit.Total Test process
In do not need any other dismounting work.Working efficiency and the degree of automation are very high.
Wherein: bore is in 100~Φ of Φ, 150 water pump clamping device, using two DN200 oil cylinders, cylinder rod aperture DN150,
Water pump pumping hole clamping flange is the DN150 specification of standard in foundation structure.When testing Φ 125 and 100 water pump of Φ, it is only necessary to simple
Pre-inserted counter flange, that is, convertible test Ordination of pump with the matched corresponding specification of water pump in flange port.
Bore is in 40~Φ of Φ, 80 water pump clamping device, using two DN140 oil cylinders, cylinder rod aperture DN80, foundation structure
Middle water pump pumping hole clamping flange is the DN80 specification of standard.When testing Φ 40,63 water pump of Φ 50 and Φ, it is only necessary to simply in method
Pre-inserted counter flange, that is, convertible test Ordination of pump with the matched corresponding specification of water pump in blue mouth.
In short, by using hydraulic clamp to the clamping of progress exfactory inspection test water pump, then it is equipped with automation
Electrical control, in particular with intelligentized detection device.Substantially increase the accuracy of water pump detection test data and reliable
Property, detection efficiency is improved, labor intensity is reduced, moreover, clamping device performance is stablized, sealing effect is good when test, behaviour
Facilitate, it is efficient and convenient to the product testing conversion of different size.
Starting: pressing start button, starts motor 4.1, drives Variable plunger pump 3.1 to operate, pressure oil is passed through check valve
6.1 feed the valve group of control oil circuit.Since the electromagnet of the first solenoid directional control valve 11.1, the second solenoid directional control valve 11.2 is to lose
Electric standby mode, so the electromagnet DT0 of electromagnetic relief valve 8.1 also must not electricity.Hydraulic oil is direct by 8.1 off-load of electromagnetic relief valve
Oil return, return oil filter 7.1 return to fuel tank 1.1 after filtering.It is equivalent to engine idle conditions.Wherein, the first solenoid directional control valve
11.1, when the electromagnet of the second solenoid directional control valve 11.2 must not be electric, electromagnetic relief valve 8.1DT0 must not electricity.First electromagnetic switch
Valve 11.1, the second solenoid directional control valve 11.2 any electromagnet obtain electric, electromagnetic relief valve 8.1DT0 obtains electric.
As shown in Figure 1, first hydraulic clamp 15 is configured to testing beam diameter in 100~Φ of Φ in the present embodiment
150 water pumps.First hydraulic clamp 15 clamps water pump: i.e. hydraulic clamping system 100 pushes the first hydraulic clamp 15 folder
Tight water pump pumping hole.Specifically, the electromagnet DT2 of first solenoid directional control valve 11.1 is obtained electric, the electricity of the electromagnetic relief valve 8.1
Magnet DT0 is electricly automatic, and hydraulic oil presses the oil pressure fuel feeding of the electromagnetic relief valve 8.1 setting, and pressure oil is through first electromagnetism
Reversal valve 11.1, the first hydraulic control one-way valve 13.1 are to the described first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2
Fuel feeding pressurization, the inside of the first hollow rod oil cylinder 15.1 and the second hollow rod oil cylinder 15.2 moves toward one another, to institute
It states water pump and is clamped pressurization, first hollow 15.1 oil return of rod oil cylinder is led to by the first superposition Double throttle check valve 12.1
It is adjustable and set the first hollow rod oil cylinder 15.1 and described second hollow to cross the first superposition Double throttle check valve 12.1
The forward speed of rod oil cylinder 15.2.
When pressure reaches predetermined pressure, the first pressure relay 14.1 issues signal, first electromagnetic switch
The electromagnet DT2 of valve 11.1 is powered off, and the electromagnet DT0 of the electromagnetic relief valve 8.1 is also automatically powered off, first hydraulic clamp
The hollow rod oil cylinder 15.1 of described the first of device 15 and the second hollow rod oil cylinder 15.2, which are in, clamps state of pressure keeping, hydraulic clip
Clamping system restores unloading condition, can start to test 100~Φ of Φ, 150 water pump.Parallel water pump test: first is hydraulic
Various testing experiments can be carried out to water pump after 15 reliable grip water pump of clamping device, until test terminates.
Wherein, the first pressure relay 14.1 keeps the monitoring to pressure maintaining chamber, lower than the pressure maintaining lower limit of setting, automatically
Control ftercompction continues pressure maintaining after reaching the upper limit, reliable to compress during guarantee test to the pumping hole of 100~Φ of Φ, 150 water pump
Property.
First hydraulic clamp 15 unclamps water pump: i.e. hydraulic clamp is that 100 systems push 15 pine of the first hydraulic clamp
It opens and withdraws water pump pumping hole.Specifically, as shown in Figure 1, in the present embodiment, in the case where 100~Φ of Φ, 150 pump test terminates state,
In the hollow rod oil cylinder 15.1 of described the first of first hydraulic clamp 15 and the second hollow rod oil cylinder 15.2 drive
When laterally outside moves to restraining position, it is configured to approach switch sending signal, the electricity of first solenoid directional control valve 11.1
Magnet DT1 power-off, the electromagnet DT0 of the electromagnetic relief valve 8.1 are also automatically powered off, at this time first hydraulic clamp 15
Stop motion, the hydraulic clamping system restore off-load standby mode.This time off-test.At this moment, water pump and more can be removed
The water pump renewed is ready for next test.
As shown in Figure 1, second hydraulic clamp 16 is configured to testing beam diameter in 40~Φ of Φ 80 in the present embodiment
Water pump, the electromagnet DT4 of second solenoid directional control valve 11.2 obtain electric, and the electromagnet DT0 of the electromagnetic relief valve 8.1 is automatic
Electricity, hydraulic oil press the oil pressure fuel feeding of the electromagnetic relief valve 8.1 setting, then are adjusted to pressure through the superposition pressure reducing valve 10.1
For the maximum working pressure of 80 parallel water pump of bore Φ, pressure oil is through second solenoid directional control valve 11.2, the second hydraulic control list
To valve 13.2 to the hollow rod oil cylinder 16.1 of the third and the 4th hollow 16.2 fuel feeding of the rod oil cylinder pressurization, the third is driven
The inside of hollow rod oil cylinder 16.1 and the 4th hollow rod oil cylinder 16.2 moves toward one another, to bore 40~Φ of Φ, 80 water pump into
Row clamps pressurization, and hollow 16.1 oil return of rod oil cylinder of third passes through institute by the second superposition Double throttle check valve 12.2
It is adjustable and set the hollow rod oil cylinder 16.1 of the third and described 4th hollow to state the second superposition Double throttle check valve 12.2
The forward speed of rod oil cylinder 16.2.
When pressure reaches predetermined pressure, the second pressure relay 14.2 issues signal, second electromagnetic switch
The electromagnet DT4 of valve 11.2 is powered off, and the electromagnet DT0 of the electromagnetic relief valve 8.1 is also automatically powered off, second hydraulic clamp
The hollow rod oil cylinder 16.1 of the third of device 16 and the 4th hollow rod oil cylinder 16.2, which are in, clamps state of pressure keeping, described
Hydraulic clamping system restores unloading condition, to start to test 40~Φ of Φ, 80 water pump；
Wherein, the second pressure relay 14.2 keeps the monitoring to pressure maintaining chamber, lower than the pressure maintaining lower limit of setting, automatically
Control ftercompction continues pressure maintaining after reaching the upper limit, the reliability compressed with the pumping hole of 40~Φ of Φ, 80 water pump during guarantee test.
As shown in Figure 1, in the present embodiment, in the case where off-test, second hydraulic clamp 16 it is described
When the hollow rod oil cylinder 16.1 of third and the 4th hollow rod oil cylinder 16.2 drive Inside To Outside to move to restraining position, match
It is set to close to switch and issues signal, the electromagnet DT3 power-off of second solenoid directional control valve 11.2, the electromagnetic relief valve 8.1
Electromagnet DT0 also automatically power off, 16 stop motion of the second hydraulic clamp at this time, the hydraulic clamping system restores
Off-load standby mode, this time off-test.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this Shen
It please the ordinary meaning that is understood of one of ordinary skill in the art.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in this application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
The preferable specific embodiment of the above, only the application, but the protection scope of the application is not limited thereto,
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by anyone skilled in the art,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of hydraulic clamping system (100) for pump test characterized by comprising fuel tank (1.1), hydraulic power
Source (I) and hydraulic clamp (15,16), the fuel tank (1.1) is for storing hydraulic oil, the hydraulic power supply (I) and institute
It states fuel tank (1.1) and the hydraulic clamp (15,16) is connected, it is pre- for being provided to the hydraulic clamp (15,16)
Constant-pressure and the hydraulic oil for keeping predetermined pressure, the hydraulic clamp (15,16) are also used to for connecting and clamping water pump
It connects water pipe and provides test water for the water pump.
2. hydraulic clamping system according to claim 1, which is characterized in that the hydraulic power supply (I) includes variable column
Plug pump (3.1), motor (4.1), check valve (6.1), electromagnetic relief valve (8.1), the first resistance to vibration pressure gauge (9.1), the second resistance to vibration
Pressure gauge (9.2), superposition pressure reducing valve (10.1), the first solenoid directional control valve (11.1), the second solenoid directional control valve (11.2), first are folded
Add Double throttle check valve (12.1), the second superposition Double throttle check valve (12.2), the first hydraulic control one-way valve (13.1), the second hydraulic control
Check valve (13.2), first pressure relay (14.1) and second pressure relay (14.2), wherein the motor (4.1) with
The Variable plunger pump (3.1) is connected, and for driving the Variable plunger pump (3.1), the electromagnetic relief valve (8.1) has electricity
Magnet DT0, each solenoid directional control valve (11.1,11.2) is three-position four-way electromagnetic directional valve, has A, B, P, T tetra- mouths, electricity
Magnet DT1 and electromagnet DT2, each superposition Double throttle check valve (12.1,12.2) include corresponding left Double throttle check valve
With right Double throttle check valve, the electromagnetic relief valve (8.1) is connected to the P mouth of first superposition Double throttle check valve (12.1)
It is superimposed between the T mouth of Double throttle check valve (12.2) with described second, the first resistance to vibration pressure gauge (9.1) is mounted on the electricity
At magnetic overflow valve (8.1), the second resistance to vibration pressure gauge (9.2) is mounted at the superposition pressure reducing valve (10.1), and described first
Pressure switch (14.1) is mounted on the rear end of first hydraulic control one-way valve (13.1), the second pressure relay (14.2)
It is mounted on the rear end of second hydraulic control one-way valve (13.2)；
The hydraulic clamp (15,16) includes the first hydraulic clamp (15) and the second hydraulic clamp (16), institute
State the first hydraulic clamp (15) include the first hollow rod oil cylinder (15.1) and the second hollow rod oil cylinder (15.2), described second
Hydraulic clamp (16) includes the hollow rod oil cylinder 16.1 of third and the 4th hollow rod oil cylinder (16.2), first hydraulic clamp
The predetermined pressure of device (15) is greater than the predetermined pressure of second hydraulic clamp (16)；
Described Variable plunger pump (3.1) one end is connected with the fuel tank (1.1), and Variable plunger pump (3.1) other end is through institute
State check valve (6.1), the P mouth of first solenoid directional control valve (11.1) and A mouthfuls, the first superposition Double throttle check valve
(12.1) left Double throttle check valve, first hydraulic control one-way valve (13.1) to the described first hollow rod oil cylinder (15.1), institute
The second hollow rod oil cylinder (15.2) is stated to be connected with the entrance of first hydraulic control one-way valve (13.1)；
Right Double throttle check valve of the first hollow rod oil cylinder (15.1) through first superposition Double throttle check valve (12.1)
And the B mouth of first solenoid directional control valve (11.1) is connected to the fuel tank (1.1) with T mouthfuls；
The hollow rod oil cylinder 16.1 of third is through second hydraulic control one-way valve (13.2), the second superposition Double throttle check valve
(12.2) left Double throttle check valve, the A mouth of second solenoid directional control valve (11.2), P mouthfuls, the superposition pressure reducing valve (10.1)
To the P mouth front end of first solenoid directional control valve (11.1), the 4th hollow rod oil cylinder (16.2) and the second hydraulic control list
It is connected to the entrance of valve (13.2)；
The hollow rod oil cylinder 16.1 of third through it is described second superposition Double throttle check valve (12.2) right Double throttle check valve and
The B mouth of second solenoid directional control valve (11.2) is connected to the fuel tank (1.1) with T mouthfuls；
First hydraulic control one-way valve (13.1) connect with the described second hollow rod oil cylinder (15.2) signal, the second hydraulic control list
It is connect to valve (13.2) with the described 4th hollow rod oil cylinder (16.2) signal.
3. hydraulic clamping system according to claim 2, which is characterized in that the first hydraulic clamp (15) configuration
At testing beam diameter in 100~Φ of Φ, 150 water pump, the electromagnet DT2 of first solenoid directional control valve (11.1) obtains electric, the electromagnetism
The electromagnet DT0 of overflow valve (8.1) is electricly automatic, and hydraulic oil presses the oil pressure fuel feeding of the electromagnetic relief valve (8.1) setting, pressure
Oil through first solenoid directional control valve (11.1), the hollow rod oil cylinder (15.1) of the first hydraulic control one-way valve (13.1) Xiang Suoshu first and
The fuel feeding of the second hollow rod oil cylinder (15.2) pressurizes, the first hollow rod oil cylinder (15.1) and second hollow stem oil
Cylinder moves toward one another on the inside of (15.2), is clamped pressurization, first hollow rod oil cylinder (15.1) the oil return warp to the water pump
Cross first superposition Double throttle check valve (12.1), by first superposition Double throttle check valve (12.1) it is adjustable and setting described in
The forward speed of first hollow rod oil cylinder (15.1) and the second hollow rod oil cylinder (15.2)；
When pressure reaches predetermined pressure, the first pressure relay (14.1) issues signal, first solenoid directional control valve
(11.1) electromagnet DT2 power-off, the electromagnet DT0 of the electromagnetic relief valve (8.1) are also automatically powered off, first hydraulic clip
The the described first hollow rod oil cylinder (15.1) and the second hollow rod oil cylinder (15.2) of tight device (15), which are in, clamps pressure maintaining shape
State, hydraulic clamping system restores unloading condition, can start to test 100~Φ of Φ, 150 water pump；
Wherein, the first pressure relay (14.1) keeps the monitoring to pressure maintaining chamber, automatic to control lower than the pressure maintaining lower limit of setting
Ftercompction processed continues pressure maintaining after reaching the upper limit, reliable to compress during guarantee test to the pumping hole of 100~Φ of Φ, 150 water pump
Property.
4. hydraulic clamping system according to claim 3, which is characterized in that terminate shape in 100~Φ of Φ, 150 pump test
Under state, the hollow rod oil cylinder (15.1) of described the first of first hydraulic clamp (15) and the second hollow rod oil cylinder
(15.2) it when driving Inside To Outside to move to restraining position, is configured to approach switch sending signal, first electromagnetism changes
It being powered off to the electromagnet DT1 of valve (11.1), the electromagnet DT0 of the electromagnetic relief valve (8.1) also automatically powers off, and described at this time the
One hydraulic clamp (15) stop motion, the hydraulic clamping system restore off-load standby mode.
5. hydraulic clamping system according to claim 2, which is characterized in that the second hydraulic clamp (16) configuration
At testing beam diameter in 40~Φ of Φ, 80 water pump, the electromagnet DT4 of second solenoid directional control valve (11.2) obtain it is electric, the electromagnetism overflow
The electromagnet DT0 for flowing valve (8.1) is electricly automatic, and hydraulic oil presses the oil pressure fuel feeding of the electromagnetic relief valve (8.1) setting, then through institute
It states superposition pressure reducing valve (10.1) and pressure is adjusted to to be used for the maximum working pressure of 80 parallel water pump of bore Φ, described in pressure oil warp
Second solenoid directional control valve (11.2), the hollow rod oil cylinder 16.1 of the second hydraulic control one-way valve (13.2) Xiang Suoshu third and the 4th sky
The pressurization of core bar oil cylinder (16.2) fuel feeding, drives the hollow rod oil cylinder 16.1 of the third and the 4th hollow rod oil cylinder (16.2)
Inside moves toward one another, and is clamped pressurization, hollow 16.1 oil return of the rod oil cylinder warp of third in 40~Φ of Φ, 80 water pump to bore
Cross it is described second superposition Double throttle check valve (12.2), by it is described second superposition Double throttle check valve (12.2) it is adjustable and
Set the forward speed of the hollow rod oil cylinder 16.1 of the third and the 4th hollow rod oil cylinder (16.2)；
When pressure reaches predetermined pressure, the second pressure relay (14.2) issues signal, second solenoid directional control valve
(11.2) electromagnet DT4 power-off, the electromagnet DT0 of the electromagnetic relief valve (8.1) are also automatically powered off, second hydraulic clip
The hollow rod oil cylinder 16.1 of the third of tight device (16) and the 4th hollow rod oil cylinder (16.2), which are in, clamps state of pressure keeping,
The hydraulic clamping system restores unloading condition, to start to test 40~Φ of Φ, 80 water pump；
Wherein, the second pressure relay (14.2) keeps the monitoring to pressure maintaining chamber, automatic to control lower than the pressure maintaining lower limit of setting
Ftercompction processed continues pressure maintaining after reaching the upper limit, the reliability compressed with the pumping hole of 40~Φ of Φ, 80 water pump during guarantee test.
6. hydraulic clamping system according to claim 5, which is characterized in that in the case where off-test, described second
The hollow rod oil cylinder 16.1 of the third of hydraulic clamp (16) and the 4th hollow rod oil cylinder (16.2) drive interior lateral
When movement outside reaches restraining position, it is configured to approach switch sending signal, the electromagnetism of second solenoid directional control valve (11.2)
Iron DT3 power-off, the electromagnet DT0 of the electromagnetic relief valve (8.1) are also automatically powered off, at this time second hydraulic clamp
(16) stop motion, the hydraulic clamping system restore off-load standby mode, this time off-test.
7. hydraulic clamping system according to claim 2, which is characterized in that be also equipped with liquidometer at the fuel tank
(2.2), for detecting the liquid level of the fuel tank (1.1).
8. hydraulic clamping system according to claim 2, which is characterized in that be also equipped with air cleaner at the fuel tank
(5.1), for filtering the air into the fuel tank (1.1).
9. hydraulic clamping system according to claim 2, which is characterized in that the T of first solenoid directional control valve (11.1)
Mouth front end and the T mouth front end of second solenoid directional control valve (11.2) are equipped with return oil filter (7.1), return to institute for filtering
State the hydraulic oil of fuel tank (1.1).
10. hydraulic clamping system according to claim 2, which is characterized in that each hydraulic clamp (15,16) is also wrapped
Include the corresponding hollow rod oil cylinder of installation (15.1,15.2,16.1,16.2) frame (4), each hollow rod oil cylinder (15.1,
It 15.2,16.1,16.2) include corresponding cylinder body (1), piston rod, the flange connector (2) of inside and the flanged joint in outside
Part (3), the piston rod setting is internal in the cylinder body (1), and the inside of the piston rod has aquaporin, is used as the water pump
Inlet and outlet pipe lines, the flange connector (2) of the inside and the flange connector (3) in the outside are correspondingly connected in the cylinder
The both ends of body, wherein the flange connector (2) of the inside with the water pump for being connected, the flange connector in the outside
(3) for connecting water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822258500.1U CN209354447U (en) | 2018-12-29 | 2018-12-29 | Hydraulic clamping system for pump test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822258500.1U CN209354447U (en) | 2018-12-29 | 2018-12-29 | Hydraulic clamping system for pump test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354447U true CN209354447U (en) | 2019-09-06 |
Family
ID=67801881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822258500.1U Expired - Fee Related CN209354447U (en) | 2018-12-29 | 2018-12-29 | Hydraulic clamping system for pump test |
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| Country | Link |
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| CN (1) | CN209354447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233708A (en) * | 2021-12-15 | 2022-03-25 | 中国航发动力股份有限公司 | Hydraulic control system and method for positioning dividing plate |
-
2018
- 2018-12-29 CN CN201822258500.1U patent/CN209354447U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233708A (en) * | 2021-12-15 | 2022-03-25 | 中国航发动力股份有限公司 | Hydraulic control system and method for positioning dividing plate |
| CN114233708B (en) * | 2021-12-15 | 2023-11-24 | 中国航发动力股份有限公司 | Hydraulic control system and method for indexing plate positioning |
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