CN110211478A - A kind of hydraulic testing apparatus and test method - Google Patents

A kind of hydraulic testing apparatus and test method Download PDF

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Publication number
CN110211478A
CN110211478A CN201910334847.6A CN201910334847A CN110211478A CN 110211478 A CN110211478 A CN 110211478A CN 201910334847 A CN201910334847 A CN 201910334847A CN 110211478 A CN110211478 A CN 110211478A
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China
Prior art keywords
switch
solenoid valve
relay
stroke
indicator light
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CN201910334847.6A
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CN110211478B (en
Inventor
安治强
郝俊
张俭
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China General Nuclear Power Corp
CGN Power Co Ltd
China Nuclear Power Operation Co Ltd
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China General Nuclear Power Corp
CGN Power Co Ltd
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Priority to CN201910334847.6A priority Critical patent/CN110211478B/en
Publication of CN110211478A publication Critical patent/CN110211478A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
    • G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The present invention relates to a kind of hydraulic testing apparatus and test methods, it include: electric hydraulic pump, the liquid reserve tank being connect with electric hydraulic pump, the first solenoid valve, the first, second, and third overflow valve between electric hydraulic pump and liquid reserve tank is arranged in the double acting hydraulic cylinder connecting with the first solenoid valve；First and second overflow valves pass through second solenoid valve respectively and connect with electric hydraulic pump, and the first and second overflow valves are connect with liquid reserve tank conduit, and third overflow valve is connect with electric hydraulic pump and liquid reserve tank；The piston rod of double acting hydraulic cylinder is equipped with stroke baffle, and stroke baffle two sides are equipped with the first and second travel switches；Power circuit, for control the first electromagnetism Vavle switching electric hydraulic pump be connected and control with the first oil pocket of double acting hydraulic cylinder or the second oil pocket respectively second solenoid valve switching electric hydraulic pump be connected respectively with first or second overflow valve.The partial function of live water pressure test pump group can be simulated by implementing the present invention, and can be simulated to live most common failure, and training cost is low.

Description

A kind of hydraulic testing apparatus and test method
Technical field
The present invention relates to nuclear power experimental rig technical fields, more specifically to a kind of hydraulic testing apparatus and test Method.
Background technique
In nuclear power station, common water pressure test pump group is that the emergency of the types pressurized-water reactor nuclear power plants such as M310 CPR1000 is set It is standby, axle sealing water is provided under accident conditions for primary Ioops reactor coolant pump.Water pressure test pump group is nuclear power station online equipment, mesh Experimental rig of the preceding nothing for training.And the true hydraulic pressure testing pump group of use site teaching use process in, there are following Problem:
1, the true hydraulic pressure testing pump group that scene uses involves great expense, such as using true water pressure test pump group for training Teaching aid, training aid expense will be sufficiently expensive, and training cost performance is extremely low, can not implement.
2, using not between the pressure-control valve, directional control valve and oil pump, hydraulic cylinder of the true hydraulic pressure testing pump group in scene Steel manifold block of becoming rusty connection, outside can not observe its connection relationship, be unfavorable for technical staff and grasp its working principle.Directional control valve It can not show the excitation situation of electromagnetic coil, technical staff is unable to the excitation situation of intuitive judgment solenoid valve.
3, water pressure test pump group is two unit shared devices, unavailable to will lead to two operating units and all remember first group I0, repair time do not surpass 6 days, it is desirable that technical staff is quickly judged and handled to failure.For more preferable lift technique personnel Troubleshooting capability, the reproduction of water pressure test pump group fault simulation need to be carried out, but by unit availability requirement, it is online to operate normally Water pressure test pump group cannot be artificially introduced simulated failure, fault simulation can not be carried out.
4, under accident conditions, when water pressure test pump group provides axle sealing water to primary Ioops reactor coolant pump, such as hydraulic pressure The outlet pressure of testing pump group is unsatisfactory for condition, and operations staff need to manually adjust the fuel pump outlet pressure of pump group.But it is tried by hydraulic pressure The limitation of pump group availability is tested, operations staff is not available online water pressure test pump group and carries out fuel pump outlet pressure adjustment operation skill It can training.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above-mentioned defects in the prior art, providing a kind of hydraulic test dress It sets and test method.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of hydraulic testing apparatus, comprising: electronic Hydraulic pump, the liquid reserve tank being connect with the electric hydraulic pump entry conductor, connect with the electric hydaulic pump outlet conduit One solenoid valve, the double acting hydraulic cylinder connecting with the first electromagnetism valve guide are arranged in the electric hydaulic pump discharge and institute State the first overflow valve, the second overflow valve and the third overflow valve between liquid reserve tank；
The entrance of first overflow valve and second overflow valve passes through second solenoid valve and the electric hydaulic respectively Pump outlet conduit connection, the outlet of first overflow valve and second overflow valve is connect with the liquid reserve tank conduit, described The entrance of third overflow valve is connect with the delivery channel of the electric hydraulic pump, the outlet of the third overflow valve and the liquid storage The connection of case conduit；
Stroke baffle is equipped at the top of the piston rod exposed junction of the double acting hydraulic cylinder, the stroke baffle two sides are equipped with can The first stroke switch and second stroke switch driven by the stroke baffle；And
With the electric hydraulic pump, first solenoid valve, the second solenoid valve and the first stroke switch and institute State the power circuit of second stroke switch connection；
The power circuit for control electric hydaulic pump discharge described in the first electromagnetism Vavle switching respectively with it is described double First oil pocket of acting cylinder or the conducting of the second oil pocket；
The power circuit be also used to control the second solenoid valve switch the electric hydaulic pump discharge respectively with it is described First overflow valve or second overflow valve conducting.
Preferably, further includes:
Connect the pressure gauge of the electric hydraulic pump Yu the second solenoid valve；And/or
Connect the filter of the electric hydraulic pump Yu the liquid reserve tank.
Preferably, the conduit connection includes being connected by transparent hose；
The double acting hydraulic cylinder, first solenoid valve, the second solenoid valve, first overflow valve, described Two overflow valves and the third overflow valve housing are all made of transparent material.
Preferably, the power circuit includes first switch, direct current transducer and connect with the direct current transducer First power circuit and second source circuit；
First power circuit for control electric hydaulic pump discharge described in the first electromagnetism Vavle switching respectively with institute State the first oil pocket or the conducting of the second oil pocket of double acting hydraulic cylinder；
The second source circuit for control the second solenoid valve switch the electric hydaulic pump discharge respectively with institute State the first overflow valve or second overflow valve conducting.
Preferably, the power circuit further includes second switch and frequency converter, and external power supply is through the first switch, described Second switch and frequency converter are connect with the electric hydraulic pump.
Preferably, first power circuit includes the first relay；
The coil of first relay is switched through third and first stroke switch is connect with the direct current transducer, The first stroke switch is connect with the 4th switch in parallel；
A pair of contact of the coil of first relay and first relay, the 5th switch and second row It is connect after Cheng Kaiguan series connection with the direct current transducer, the second stroke switch is connect with the 6th switch in parallel；
First electromagnetic coil of first solenoid valve is through second pair of contact of first relay and the 7th switch series It is connect after connection with the direct current transducer；
Second electromagnetic coil of first solenoid valve opens contact and the described 7th through the third of first relay It is connect after closing series connection with the direct current transducer；And/or
The second source circuit includes the second relay and third relay；
The coil of second relay is connect through the 8th switch and the tenth switch with the direct current transducer；Described 8th Switch is connect with first pair of contact shunt of second relay；
Second pair contact of the coil of the third relay through second relay, the 9th switch and the described tenth are opened Pass is connect with the direct current transducer；9th switch is connect with first pair of contact shunt of the third relay；It is described The coil of third relay is simultaneously connected through the 11st switch and the tenth switch；
Third of first electromagnetic coil of the second solenoid valve through the third relay to contact and described second after The third of electric appliance connect contact with the direct current transducer；
Four pair contact of second electromagnetic coil of the second solenoid valve through the third relay and described second after 4th pair of contact of electric appliance is connect with the direct current transducer；.
Preferably, first power circuit further include: the first indicator light and/or the second indicator light；
First electromagnetic coil of first solenoid valve is connected in parallel with first indicator light；
Second electromagnetic coil of first solenoid valve is connected in parallel with second indicator light；
And/or
The second source further includes third indicator light, the 4th indicator light, the 5th indicator light, the 6th indicator light and the 7th finger Show one or more of lamp；
First electromagnetic coil of the second solenoid valve is connected in parallel with the third indicator light；
Second electromagnetic coil of the second solenoid valve is connected in parallel with the 4th indicator light；
Five pair contact of 5th indicator light through second relay is connect with the direct current transducer；
Five pair contact of 6th indicator light through the third relay is connect with the direct current transducer；
6th pair of touching of six pair contact and second relay of the 7th indicator light through the third relay Point is connect with the direct current transducer.
Preferably, the first switch and the second switch are on-load switch,
The third switch, the 4th switch, the 5th switch, the 6th switch, the 7th switch and the 11st switch are opened for key It closes；
8th switch, the 9th switch and the tenth switch are button switch.
The present invention also constructs the hydraulic test method using an any of the above hydraulic testing apparatus, comprising: in starting electricity When source circuit, electric hydaulic pump work, the Working mould of the first solenoid valve, first stroke switch and second stroke switch normal work Formula, and
The power circuit receives the first trigger signal, simulates the first abnormal patterns of the first stroke switch fault；
The power circuit receives the second trigger signal, simulates the second abnormal patterns of the second stroke switch fault；
The power circuit receives third trigger signal, and the third for simulating the electric hydaulic pump discharge pressure failure is abnormal Mode；
The operating mode the following steps are included:
S1, the power circuit trigger the of electric hydaulic pump discharge and double acting hydraulic cylinder described in the first electromagnetism Vavle switching The conducting of two oil pockets, the double-action hydraulic the cylinder piston start to move along first direction；
S2, the double-action hydraulic the cylinder piston are moved to the gear of the stroke at the top of the double-action hydraulic cylinder piston rod outer end Plate contacts the first stroke switch；
S3, first stroke switch are driven, and the power circuit triggers electronic described in the first electromagnetism Vavle switching Hydraulic pump outlet is connected with first oil pocket of double acting hydraulic cylinder, and the double-action hydraulic the cylinder piston starts to move in a second direction It is dynamic,
S4, the double-action hydraulic the cylinder piston are moved to the stroke baffle and contact the second stroke switch；
S5, second stroke switch are driven, and return and execute the step S1.
Preferably, the power circuit receives the first trigger signal, and simulate the first stroke switch fault first is different Norm formula includes:
Triggering third switch makes its disconnection, disconnects the connection of the first stroke switch and the coil of the first relay, with Failure can not be closed by simulating the first stroke switch；Or
Triggering the 4th switch makes its closure, and the short circuit first stroke switch is to simulate the first stroke switch without decision Open failure.
Preferably, the power circuit receives the second trigger signal, and simulate the second stroke switch fault second is different Norm formula includes:
Triggering the 5th switch makes its disconnection, disconnects the connection of the second stroke switch and the coil of the first relay, with Failure can not be closed by simulating the second stroke switch；Or
Triggering the 6th switch makes its closure, and the short circuit second stroke switch is to simulate the second stroke switch without decision Open failure.
Preferably, the power circuit receives third trigger signal, simulates the electric hydaulic pump discharge pressure failure Third abnormal patterns include:
Triggering the 7th switch makes its disconnection, electric hydaulic pump discharge described in the first electromagnetism Vavle switching and the liquid reserve tank Conducting.
Preferably, the hydraulic test method further include:
When the first coil of first solenoid valve obtains electric, the first indicator light is lighted；And/or
When second coil of the first solenoid valve obtains electric, the second indicator light is lighted.
Preferably, the operating mode includes:
The power circuit receives the 4th trigger signal, and the second solenoid valve is driven to switch the electric hydaulic pump discharge The first operating mode be connected with the first overflow valve；
The power circuit receives the 5th trigger signal, and the second solenoid valve is driven to switch the electric hydaulic pump discharge The second operating mode be connected with the second overflow valve；And
The power circuit receives the 6th trigger signal, drives the second solenoid valve to turn off, makes the electric hydraulic pump The third operating mode that outlet is not turned on first overflow valve and the second overflow valve.
Preferably,
It includes the 9th switch of triggering that the power circuit, which receives the 4th trigger signal,；
It includes the 8th switch of triggering that the power circuit, which receives the 5th trigger signal,；
It includes the tenth switch of triggering that the power circuit, which receives the 6th trigger signal,.
Preferably, the test method further includes the 4th abnormal patterns, and the 4th abnormal patterns include:
The power circuit receives the 7th trigger signal, is turned off second solenoid valve, and the second solenoid valve switches institute Electric hydaulic pump discharge is stated to be not turned on first overflow valve and second overflow valve；
Preferably, it includes the 11st switch of triggering that the power circuit, which receives the 7th trigger signal,.
Preferably, the hydraulic test method further include:
In first operating mode, the 6th indicator light is lighted；And/or
In second operating mode, the 5th indicator light is lighted；And/or
In four abnormal patterns, the 7th indicator light is lighted；And/or
When first electromagnetic coil of second solenoid valve obtains electric, third indicator light is lighted；And/or
When second electromagnetic coil of second solenoid valve obtains electric, the 4th indicator light is lighted.
Implement a kind of hydraulic testing apparatus of the invention and test method, scene can be simulated by having the advantages that The partial function of water pressure test pump group, and live most common failure can be simulated, with for training, training cost is low.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is a kind of structural schematic diagram of one embodiment of hydraulic testing apparatus of the present invention；
Fig. 2 is a kind of circuit diagram of one embodiment of hydraulic testing apparatus of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail A specific embodiment of the invention.
As shown in Figure 1, in a kind of hydraulic testing apparatus first embodiment of the invention, comprising: electric hydraulic pump 130, The liquid reserve tank 110 being connect with 130 entry conductor of electric hydraulic pump, the first electromagnetism being connect with 130 delivery channel of electric hydraulic pump Valve DT1, the double acting hydraulic cylinder 140 connecting with the first solenoid valve DT1 conduit, setting is in the outlet of electric hydraulic pump 130 and liquid storage The first overflow valve PV1, the second overflow valve PV2 and third overflow valve PV3 between case 110；First overflow valve PV1 and the second overflow The entrance of valve PV2 passes through second solenoid valve DT2 respectively and connect with 130 delivery channel of electric hydraulic pump, the first overflow valve PV1 and The outlet of two overflow valve PV2 is connect with 110 conduit of liquid reserve tank, the outlet of the entrance and electric hydraulic pump 130 of third overflow valve PV3 Conduit connection, the outlet of third overflow valve PV3 is connect with 110 conduit of liquid reserve tank；Outside the piston rod 143 of double acting hydraulic cylinder 140 Reveal and be equipped with stroke baffle 150 at the top of end, 150 two sides of stroke baffle, which are equipped with, to be switched by the first stroke that stroke baffle 150 drives SQ1 and second stroke switch SQ2；And with electric hydraulic pump 130, the first solenoid valve DT1, second solenoid valve DT2 and the first row The power circuit that Cheng Kaiguan SQ1 is connected with second stroke switch SQ2；Power circuit is for controlling the first solenoid valve DT1 switching electricity The outlet of hydrodynamic press pump 130 is connected with the first oil pocket 141 of double acting hydraulic cylinder 140 or the second oil pocket 142 respectively；Power circuit is used It is led respectively with the first overflow valve PV1 or the second overflow valve PV2 in the outlet of control second solenoid valve DT2 switching electric hydraulic pump 130 It is logical.
Specifically, electric hydraulic pump 130 can be oil pump, concrete type can be gear pump, the screw rod in positive displacement pump One kind of pump, vane pump, plunger pump and other type positive displacement pumps, driving method are variable-frequency motor driving, motor driven voltage For alternating current 220V.Hereinafter, by taking oil pump as an example, liquid reserve tank 110 can be corresponding oil for the work of electric hydraulic pump 130 Case, oil pump provide power fluid force feed to hydraulic circuit, by adjusting the frequency shift pump speed of motor power, and then change oil The flow of pump.The entrance of oil pump accesses fuel tank, that is, liquid reserve tank 110, the P of outlet and the first solenoid valve DT1 and second solenoid valve DT2 Hydraulic fluid port, the connection of third overflow valve PV3 entrance.The P hydraulic fluid port of first solenoid valve DT1 is connect with fuel pump outlet, and T hydraulic fluid port and fuel tank connect It connects, A hydraulic fluid port is connect with the first oil pocket 141 of double acting hydraulic cylinder 140, the second oil pocket of B hydraulic fluid port and double acting hydraulic cylinder 140 142 connections.When the first solenoid valve DT1 must not be electric, P hydraulic fluid port, T hydraulic fluid port, A hydraulic fluid port, the connection of B hydraulic fluid port, double acting hydraulic cylinder 140 is not Movement.When the first electromagnetic coil EL01 power loss of the first solenoid valve DT1, the second electromagnetic coil EL02 obtain electric, P hydraulic fluid port and B hydraulic fluid port Connection, T hydraulic fluid port are connected to A hydraulic fluid port, second oil pocket 142 fuel feeding of the oil pump to double acting hydraulic cylinder 140, double acting hydraulic cylinder 140 The first oil-in chamber 141 be connected to fuel tank, the piston 144 of hydraulic cylinder is run to first direction.When the stroke baffle 150 of hydraulic cylinder After touching first stroke switch SQ1, the first electromagnetic coil EL01 of the first solenoid valve DT1 obtains electric, the second electromagnetic coil EL02 and loses When electric, P hydraulic fluid port is connected to A hydraulic fluid port, and T hydraulic fluid port is connected to B hydraulic fluid port, and oil pump is supplied to the first oil pocket 141 of double acting hydraulic cylinder 140 Second oil pocket 142 of oil, double acting hydraulic cylinder 140 is connected to fuel tank, and the piston 144 of hydraulic cylinder is run to second direction.Work as liquid After the stroke baffle 150 of cylinder pressure touches second stroke switch SQ2, the electromagnetic coil EL01 of solenoid valve DT1 power loss, electromagnetic wire again Enclose EL02 again it is electric.First solenoid valve DT1 repeatedly excitation con-trol double acting hydraulic cylinder 140 piston 144 back and forth run. It is appreciated that the first solenoid valve DT1 uses " H " type middle-position machine system.First stroke switch SQ1 and second stroke switch SQ2 can be with Using mechanical swing arm, wherein first stroke switch SQ1 is normally opened travel switch, and second stroke switch SQ2 is that normally closed stroke is opened It closes.
First overflow valve PV1, the second overflow valve PV2, third overflow valve PV3 are used for control oil pump outlet pressure, overflow valve The setting pressure of PV1, PV2, PV3 are respectively P1, P2, P3, and P3 > P1, P3 > P2.The entrance and oil pump of third overflow valve PV3 Outlet connection, the outlet of third overflow valve PV3 is connect with fuel tank.The entrance of first overflow valve PV1 and the A of second solenoid valve DT2 Hydraulic fluid port connection, the outlet of the first overflow valve PV1 is connect with fuel tank.The entrance of second overflow valve PV2 and the B of second solenoid valve DT2 Hydraulic fluid port connection, the outlet of the second overflow valve PV2 is connect with fuel tank.The P hydraulic fluid port of second solenoid valve DT2 is connect with fuel pump outlet, the The T hydraulic fluid port of two solenoid valve DT2 is connect with fuel tank.When second solenoid valve DT2 not excitation, only third overflow valve PV3 and oil pump Outlet connection, the outlet pressure of oil pump are controlled by PV3.When the electromagnetic coil EL03 of second solenoid valve DT2 obtains electric, electromagnetic coil When EL04 power loss, the second overflow valve PV2 and third overflow valve PV3 are connect with fuel pump outlet, and the outlet pressure of oil pump is by second Overflow valve PV2 and third overflow valve PV3 co- controlling, but due to P3 > P2, the outlet pressure of oil pump is controlled by the second overflow valve PV2 System.When the electromagnetic coil EL03 power loss of second solenoid valve DT2, electromagnetic coil EL04 obtain electric, the first overflow valve PV1 and third are overflow Stream valve PV3 is connect with fuel pump outlet, the outlet pressure of oil pump by the first overflow valve PV1 and third overflow valve PV3 co- controlling, But due to P3 > P1, the outlet pressure of oil pump is controlled by the first overflow valve PV1.It is appreciated that second solenoid valve DT2 uses " O " Type middle-position machine system.
In this experimental rig, operator can be overflow with the first overflow valve of operation setting PV1, the second overflow valve PV2, third Flow the pressure value of valve PV3, simulation site pressure setting.Such as the pressure set points of third overflow valve PV3 are arranged and are overflow less than first The pressure set points for flowing valve PV1 or the second overflow valve PV2 can simulate site pressure setting fault.
Optionally, a kind of hydraulic testing apparatus of the invention further include: connection electric hydraulic pump 130 and second solenoid valve Pressure gauge 160；And/or the filter 120 of connection electric hydraulic pump 130 and liquid reserve tank 110.Specifically, pressure gauge 160 and oil pump Outlet connection, shows fuel pump outlet pressure.The entrance of oil pump can access fuel tank, impurity screening by filter 120.
Optionally, conduit connection includes being connected by transparent hose；Double acting hydraulic cylinder, the first solenoid valve, the second electromagnetism Valve, the first overflow valve, the second overflow valve and third overflow valve housing are all made of transparent material.Specifically, conduit is using transparent Hose, double acting hydraulic cylinder, the first solenoid valve, second solenoid valve, the first overflow valve, the second overflow valve and third overflow valve shell Body all can be the transparent materials such as organic glass, the first solenoid valve DT1 and the both ends second solenoid valve DT2 be also provided with have it is aobvious Show the indicator light of magnetic excitation coil situation.
As shown in Fig. 2, power circuit includes first switch QS1, direct current transducer 210 and connects with direct current transducer 210 The first power circuit 220 and second source circuit 230 connect；First power circuit 220 is for controlling the first solenoid valve DT1 switching The outlet of electric hydraulic pump 130 is connected with the first oil pocket 141 of double acting hydraulic cylinder 140 or the second oil pocket 142 respectively；Second source Circuit 230 overflows with the first overflow valve PV1 or second respectively for controlling the outlet of second solenoid valve DT2 switching electric hydraulic pump 130 Flow valve PV2 conducting.Specifically, 220V AC power source is converted 24V DC power supply by direct current transducer 210.24V DC power supply warp The first power circuit 220 or second source circuit 230 is crossed to power to device.It passes through the control control of the first power circuit 220 It is oily with the first oil pocket 141 or second of double acting hydraulic cylinder 140 respectively that first solenoid valve DT1 switches the outlet of electric hydraulic pump 130 Chamber 142 is connected, and controls second solenoid valve DT2 by second source circuit 230 and switches the outlet of electric hydraulic pump 130 respectively with first Overflow valve PV1 or the second overflow valve PV2 conducting.
Optionally, power circuit further includes second switch QS2 and frequency converter 240, and external power supply is through first switch QS1, Two switch QS2 and frequency converter 240 are connect with electric hydraulic pump 130.It is appreciated that electricity of the power circuit by electric hydraulic pump 130 The composition such as electromechanical road, frequency converter 240, direct current transducer 210, first switch QS1, second switch QS2, fuse FU1.Power supply electricity The external alternating current 220V power supply in road, the unlatching and closure of first switch QS1 connection external power supply and fuse FU1, first switch QS1 Control the power supply of entire power circuit.Fuse FU1 limits conducting wire L1 electric current, avoids the load connecting with conducting wire L1 beyond negative Lotus.Second switch QS2 connecting wire L1 and frequency converter 240 mainly give 130 motor of electric hydraulic pump to power, and frequency converter 240 is used In the revolving speed for changing 130 motor of electric hydraulic pump, to adjust the flow of electric hydraulic pump 130.Direct current converter 210 is through fuse FU1, first switch QS1 are connect with external power supply, and direct current converter provides DC power supply for circuit downstream.
Optionally, the first power circuit 220 includes the first relay；
The coil KA1a of first relay is connect through third switch Q1 and first stroke switch SQ1 with direct current transducer 210, First stroke switch SQ1 is connected in parallel with the 4th switch Q2；First pair of the coil KA1a of first relay and the first relay It is connect after contact KA1b, the 5th switch Q3 and second stroke switch SQ2 series connection with direct current transducer 210, second stroke switch SQ2 It is connected in parallel with the 6th switch Q4；Second pair contact of the first electromagnetic coil EL01 of first solenoid valve DT1 through the first relay It is connect after KA1c and the 7th switch Q5 series connection with direct current transducer 210, the first electromagnetic coil EL01 of the first solenoid valve DT1 and the One indicator light HL1 is connected in parallel；The second third of the electromagnetic coil EL02 through the first relay of first solenoid valve DT1 is to contact It is connect after KA1d and the 7th switch Q5 series connection with direct current transducer 210, the second electromagnetic coil EL02 of the first solenoid valve DT1 and the Two indicator light HL2 are connected in parallel；And/or
Second source circuit 230 includes the second relay and third relay；
The coil KA2a of second relay is connect through the 8th switch SB1 and the tenth switch SB3 with direct current transducer 210；The A pair of contact KA2b of eight switch SB1 and the second relay are connected in parallel；
The coil KA3a of third relay is opened through the second of the second relay couple of contact KA2c, the 9th switch SB2 and the tenth SB3 is closed to connect with direct current transducer 210；A pair of contact KA3b of 9th switch SB2 and third relay are connected in parallel；Third The coil KA3a of relay is simultaneously connect through the 11st switch Q6 with the tenth switch SB3；
The first third of the electromagnetic coil EL03 through third relay of second solenoid valve DT2 is to contact KA3d and the second relay The third of device connect contact KA2d with direct current transducer 210, and the first electromagnetic coil EL03 of second solenoid valve DT2 refers to third Show that lamp HL3 is connected in parallel；
The second electromagnetic coil EL04 of second solenoid valve DT2 is through the 4th of third relay the pair of contact KA3e and the second relay 4th couple of contact KA2e of device is connect with direct current transducer 210, and the second electromagnetic coil EL04 of second solenoid valve DT2 and the 4th refers to Show that lamp HL4 is connected in parallel.
Specifically, the first power circuit 220 includes the first relay, third switch Q1, the 4th switch Q2, the 5th switch Q3, the 6th switch Q4, the 7th switch Q5, first stroke switch SQ1, second stroke switch SQ2 and the first solenoid valve DT1 One electromagnetic coil EL01 and the second electromagnetic coil EL02, the first indicator light HL1, the second indicator light HL2.First stroke switch SQ1 For normal open switch, second stroke switch SQ2 is normally closed switch, and third switch Q1 is normally closed switch, and the 4th switch Q2 is normally opened opens It closes, the 5th switch Q3 is normally closed switch, and the 6th switch Q4 is normal open switch, and the 7th switch Q5 is normally closed switch, the first relay Coil KA1a connect after third switch Q1, first stroke switch SQ1 series connection with direct current transducer 210, the first relay Coil KA1a after a pair of contact KA1b of the first relay, the 5th switch Q3 and second stroke switch SQ2 series connection with it is straight Stream transformer 210 connects, the normally opened contact KA1c of first electromagnetic coil EL01 the first relay of connection of the first solenoid valve DT1. The normally-closed contact KA1d of second electromagnetic coil EL02 the first relay of connection of first solenoid valve DT1.First switch QS1 closure Afterwards, power circuit starts to power, if first stroke switch SQ1 is not closed, the coil KA1a power loss of the first relay, first after The normally opened contact KA1c of electric appliance is in an off state, and the normally-closed contact KA1d of the first relay is in closed state, the first electromagnetism The first electromagnetic coil EL01 power loss of valve DT1, the second electromagnetic coil EL02 obtain electric.After second switch QS2 closure, adjustment oil pump turns Speed, fuel pump outlet pressure drive double acting hydraulic cylinder 140, the piston 144 to first of double acting hydraulic cylinder 140 after reaching certain value Direction is mobile.When the stroke baffle 150 of double acting hydraulic cylinder 140 touches first stroke switch SQ1, first switch SQ1 closure, The coil KA1a of first relay obtains electric, normally opened contact KA1b and the KA1c closure of the first relay, normally-closed contact KA1d disconnection, The first electromagnetic coil EL01 of first solenoid valve DT1 obtains electric, the second electromagnetic coil EL02 power loss, the work of double acting hydraulic cylinder 140 Plug 144 is mobile to second direction.After the stroke baffle 150 of double acting hydraulic cylinder 140 leaves first stroke switch SQ1, first The coil KA1a of relay is made up of the normally opened contact KA1b by second stroke switch SQ2, the 5th switch Q3, the first relay Self-hold circuit continue electric, the excited state of the first solenoid valve DT1 remains unchanged, the piston 144 of double acting hydraulic cylinder 140 Continue mobile to second direction.When the stroke baffle 150 of double acting hydraulic cylinder 140 touches second stroke switch SQ2, the second row Cheng Kaiguan SQ2 is disconnected, and the self-hold circuit of the first relay disconnects, the coil KA1a power loss of the first relay, the first relay Normally opened contact KA1c disconnect, normally-closed contact KA1d closure, the first electromagnetic coil EL01 power loss of the first solenoid valve DT1, second Electromagnetic coil EL02 obtains electric, and the piston 144 of double acting hydraulic cylinder 140 is mobile to first direction.When the row of double acting hydraulic cylinder 140 After journey baffle 150 leaves second stroke switch SQ2, due to the coil KA1a power loss of the first relay, the first solenoid valve DT1's is encouraged Magnetic state remains unchanged, and the piston 144 of double acting hydraulic cylinder 140 continues mobile to first direction.When double acting hydraulic cylinder 140 Stroke baffle 150 touch first stroke switch SQ1 after, the coil KA1a of the first relay again it is electric, the first solenoid valve DT1's First electromagnetic coil EL01 obtains electric, the second electromagnetic coil EL02 power loss, and the piston 144 of double acting hydraulic cylinder 140 is to second direction It is mobile.The piston 144 of double acting hydraulic cylinder 140 is run so forth.It is appreciated that in the piston 144 of double acting hydraulic cylinder 140 During running so forth, the first coil EL01 of the first solenoid valve DT1 and the second electromagnetic coil EL02 obtain electric or power loss State can be indicated by the first indicator light HL1 or the second indicator light HL2, can pass through the first indicator light HL1 and The normal assays process for the state confirmation hydraulic device that two indicator light HL2 interaction is lighted.Wherein the first indicator light HL1 or second Indicator light HL2 is optional.
Second source circuit 230 includes the second relay, third relay, the 8th switch SB1, the 9th switch SB2, the tenth The the first electromagnetic coil EL03 and the second electromagnetic coil EL04 of switch SB3, the 11st switch Q6 and second solenoid valve DT2, Three indicator light HL3, the 4th indicator light HL4, the 8th switch SB1 are normal open switch, and the 9th switch SB2 is normal open switch, and the tenth opens Pass SB3 is normally closed switch, and the 11st switch Q6 is normal open switch, the coil KA2a of the second relay and the 8th switch SB1 and the Direct current transducer 210, the coil KA3a of third relay and the normally-closed contact of the second relay are connected after ten switch SB3 series connection It is connect after KA2c and the 9th switch SB2, the tenth switch SB3 series connection with direct current transducer 210, while the coil of third relay KA3a is connect through the 11st switch Q6 with the tenth switch SB3, and the first electromagnetic coil EL03 of second solenoid valve DT2 is through third relay The normally-closed contact KA3d of device and the normally opened contact KA2d of the second relay are connect with direct current transducer 210；Second solenoid valve DT2's The normally-closed contact KA2e and direct current of normally opened contact KA3e and second relay of the second electromagnetic coil EL04 through third relay turn Parallel operation 210 connects.It is appreciated that the first coil EL03 of second solenoid valve DT2 and the second electromagnetic coil EL04 are obtained electric or are lost Electricity condition by lighting third indicator light HL3 can indicate the state that connect with fuel pump outlet of the second overflow valve PV2 or light the Four indicator light HL4 indicate the state that the first overflow valve PV1 is connect with fuel pump outlet, and wherein third indicator light HL3 or the 4th refers to Show that lamp HL4 is optional.
Optionally, second source circuit further includes in the 5th indicator light HL5, the 6th indicator light HL6 and the 7th indicator light HL7 One or more；Five pair contact KA2f of the 5th indicator light HL5 through the second relay is connect with direct current transducer 210；The Five pair contact KA3f of the six indicator light HL6 through third relay is connect with direct current transducer 210；7th indicator light HL7 is through 6th couple of contact KA3g of three relays and the 6th couple of contact KA2g of the second relay are connect with direct current transducer 210.Specifically , the 5th indicator light HL5 passes through the normally opened contact KA2f connection direct current transducer 210 of the second relay.6th indicator light HL6 is logical The normally opened contact KA3f for crossing third relay is connect with direct current transducer 210.7th indicator light HL7 passes sequentially through third relay Normally opened contact KA3g, the second relay normally opened contact KA2g connection direct current transducer 210.5th indicator light HL5, the 6th refer to Show lamp HL6 and the 7th indicator light HL7 according to the energization feelings of the coil KA2a of the second relay and the coil KA3a of third relay Condition is lighted or is extinguished.
Optionally, first switch QS1 and second switch QS2 is on-load switch, third switch Q1, the 4th switch Q2, the 5th Switch Q3, the 6th switch Q4, the 7th switch Q5 and the 11st switch Q6 are key switch；8th switch SB1, the 9th switch SB2 It is button switch with the tenth switch SB3.The selection with progress switchtype easy to use is required here according to circuit load, at this In be not limited to above-mentioned switchtype selection.
In addition, a kind of hydraulic test method of the invention, comprising: when startup power supply circuit, electric hydraulic pump 130 work, The operating mode and power circuit that first solenoid valve DT1, first stroke switch SQ1 and second stroke switch SQ2 are worked normally The first trigger signal is received, the first abnormal patterns of first stroke switch SQ1 failure are simulated；Power circuit receives the second triggering letter Number, simulate the second abnormal patterns of second stroke switch SQ2 failure；Power circuit receives third trigger signal, simulates electronic liquid The third abnormal patterns of 130 outlet pressure failure of press pump；
Operating mode the following steps are included:
S1, power circuit trigger switching electric hydraulic pump 130 outlet the first solenoid valve DT1 and double acting hydraulic cylinder 140 The beginning of piston 144 of the conducting of second oil pocket 142, double acting hydraulic cylinder is moved along first direction；
S2, double acting hydraulic cylinder piston 144 be moved to the stroke at the top of 143 outer end of double-action hydraulic cylinder piston rod gear Plate 150 contacts first stroke switch SQ1；
S3, first stroke switch SQ1 are driven, and power circuit triggers the first solenoid valve DT1 switching electric hydraulic pump 130 and goes out Mouth is connected with the first oil pocket of double acting hydraulic cylinder 141, and the beginning of piston 144 of double acting hydraulic cylinder is moved in a second direction；
S4, double acting hydraulic cylinder piston 144 be moved to stroke baffle 150 contact second stroke switch SQ2；
S5, second stroke switch SQ2 are driven, and return to step S1.
Specifically, in normal work, work in startup power supply circuit, electric hydraulic pump 130, the first solenoid valve DT1, the One stroke switch SQ1 and second stroke switch SQ2 are worked normally, and workflow is as follows, and entering for oil pump is described above Mouth access fuel tank, outlet is connect with the P hydraulic fluid port of the first solenoid valve DT1 and second solenoid valve DT2, third overflow valve PV3 entrance.The The P hydraulic fluid port of one solenoid valve DT1 is connect with fuel pump outlet, and T hydraulic fluid port is connect with fuel tank, and the first of A hydraulic fluid port and double acting hydraulic cylinder 140 Oil pocket 141 connects, and B hydraulic fluid port is connect with the second oil pocket 142 of double acting hydraulic cylinder 140.When the first solenoid valve DT1 must not be electric, P Hydraulic fluid port, T hydraulic fluid port, A hydraulic fluid port, the connection of B hydraulic fluid port, double acting hydraulic cylinder 140 are failure to actuate.When power circuit controls the first solenoid valve DT1 Electromagnetic coil EL01 power loss, electromagnetic coil EL02 is when obtaining electric, P hydraulic fluid port is connected to B hydraulic fluid port, and T hydraulic fluid port is connected to A hydraulic fluid port, oil pump To 142 fuel feeding of the second oil pocket of double acting hydraulic cylinder 140, the first oil pocket 141 of double acting hydraulic cylinder 140 is connected to fuel tank, liquid The piston 144 of cylinder pressure is mobile to first direction.After the stroke baffle 150 of hydraulic cylinder touches first stroke switch SQ1, the first electricity The first electromagnetic coil EL01 of magnet valve DT1 obtains electric, the second electromagnetic coil EL02 power loss, and P hydraulic fluid port is connected to A hydraulic fluid port, T hydraulic fluid port and B Hydraulic fluid port connection, first oil pocket 141 fuel feeding of the oil pump to double acting hydraulic cylinder 140, the second oil pocket 142 of double acting hydraulic cylinder 140 It is connected to fuel tank, the piston 144 of hydraulic cylinder is mobile to second direction.Second stroke is touched when the stroke baffle 150 of hydraulic cylinder to open Close SQ2 after, the first electromagnetic coil EL01 of the first solenoid valve DT1 again power loss, the second electromagnetic coil EL02 again it is electric.First Solenoid valve DT1 repeatedly excitation con-trol double acting hydraulic cylinder 140 piston 144 back and forth run.Triggering electricity can be passed through at this time Source circuit simulates when first stroke switch SQ1, second stroke switch SQ2 and electric hydraulic pump 130 occur abnormal respectively One abnormal patterns, the second abnormal patterns and third abnormal patterns.
Optionally, on the basis of above, power circuit receives the first trigger signal, simulation first stroke switch SQ1 event First abnormal patterns of barrier include: triggering third switch Q1, and breaking first stroke switch SQ1 is to simulate first stroke switch SQ1 Failure can not be closed；Or the 4th switch Q2 of triggering, short-circuit first stroke switch SQ1 is to simulate first stroke switch SQ1 without decision Open failure.Specifically, the coil KA1a of the first relay can not lead to when first stroke switch SQ1 generation can not be closed failure SQ1 is crossed to connect with direct current transducer 210.By triggering third switch Q1, after disconnecting third switch Q1, the first relay is disconnected Coil KA1a pass through the connection of SQ1 and direct current transducer 210, it is former that power circuit is equivalent to first stroke switch SQ1 generation Barrier can not be closed, and can not be closed Test to Failure to simulate first stroke switch SQ1.After first stroke switch SQ1 is closed When can not disconnect failure, the coil KA1a of the first relay will always it is electric.By triggering the 4th switch Q2, Q2 is closed, is made First stroke switch SQ1 both ends direct short-circuit connection, its power circuit is equivalent to first stroke switch when the 4th switch Q2 is closed SQ1, which breaks down, to be disconnected, and can not disconnect Test to Failure to simulate after first stroke switch SQ1 is closed.
Optionally, on the basis of above, power circuit receives the second trigger signal, simulation second stroke switch SQ2 event Second abnormal patterns of barrier include: the 5th switch Q3 of triggering, and breaking second stroke switch SQ2 is to simulate second stroke switch SQ2 Failure can not be closed；Or the 6th switch Q4 of triggering, short-circuit second stroke switch SQ2 is to simulate second stroke switch SQ2 without decision Open failure.Specifically, failure, the self-hold circuit of the first relay can not be closed after second stroke switch SQ2 is disconnected It can not be formed.By triggering the 5th switch Q3, after making the 5th switch Q3 disconnection, the coil KA1a of the first relay will be switched off through the The connection of a pair of contact KA1b, SQ2 and direct current transducer 210 of one relay, power circuit are equivalent to second stroke and open It closes SQ2 to break down and can not be closed, Test to Failure can not be closed to simulate after second stroke switch SQ2 is disconnected.Work as second stroke Switch SQ2 generation be when can not disconnect failure, the coil KA1a of the first relay obtain it is electric after will always it is electric.It is opened by triggering the 6th Q4 is closed, the 6th switch Q4 is closed, connects second stroke switch SQ2 both ends direct short-circuit, effect and travel switch SQ2 are sent out Raw failure can not disconnect unanimously, can not disconnect Test to Failure to simulate second stroke switch SQ2.
Optionally, on the basis of above, power circuit receives third trigger signal, and simulation electric hydraulic pump 130 exports The third abnormal patterns of pressure fault include: the 7th switch Q5 of triggering, and the first solenoid valve DT1 switches electric hydraulic pump 130 and exports It is connected with liquid reserve tank 110.Specifically, under normal condition, the first electromagnetic coil EL01 of the first solenoid valve DT1 and the second electromagnetic wire Enclose EL02 in always one electric, another power loss.When triggering the 7th switch Q5, after making its disconnection, the of the first solenoid valve DT1 One electromagnetic coil EL01, the second magnet exciting coil EL02 must not be electric, and the outlet of oil pump is connected by the first solenoid valve DT1 and fuel tank Logical, bust will occur for the outlet pressure of oil pump.By the 7th switch Q5 of triggering to simulate live fuel pump outlet abrupt pressure reduction failure Test.
Optionally, in an a kind of embodiment of hydraulic test method of the invention, further includes: in the first solenoid valve DT1 First coil EL01 when obtaining electric, light the first indicator light HL1；And/or it is obtained in the second coil EL02 of the first solenoid valve DT1 electric When, light the first indicator light HL2.Specifically, the first indicator light HL1 is used to show encouraging for the first coil EL01 of the first solenoid valve Magnetic situation, when EL01 is obtained it is electric when, indicator light HL1 is lighted, and when EL01 power loss, indicator light HL1 does not work；Second indicator light HL2 is used In show the first solenoid valve the second coil EL02 excitation situation, when EL02 is obtained it is electric when, indicator light HL2 is lighted, when EL02 lose When electric, indicator light HL2 does not work.The state confirmation that can be lighted by the first indicator light HL1 and the second indicator light HL2 interaction is hydraulic The normal assays process of device.
Optionally, on the basis of above, in a kind of hydraulic test method of the invention, operating mode includes: power supply electricity Road receives the 4th trigger signal, and the outlet of driving second solenoid valve DT2 switching electric hydraulic pump 130 is connected with the first overflow valve PV1 The first operating mode；Power circuit receives the 5th trigger signal, and driving second solenoid valve DT2 switching electric hydraulic pump 130 goes out The second operating mode that mouth is connected with the second overflow valve PV2；And power circuit receives the 6th trigger signal, drives second solenoid valve DT2 shutdown, the third Working mould for being not turned on the outlet of electric hydraulic pump 130 with the first overflow valve PV1 and the second overflow valve PV2 Formula.Specifically, the first overflow valve PV1, the second overflow valve PV2, third overflow valve PV3 are used for the outlet pressure of control oil pump, overflow The setting pressure of stream valve PV1, PV2, PV3 are respectively P1, P2, P3, and P3 > P1, P3 > P2.The entrance of third overflow valve PV3 with Fuel pump outlet connection, the outlet of third overflow valve PV3 is connect with fuel tank.The entrance and second solenoid valve DT2 of first overflow valve PV1 A hydraulic fluid port connection, the outlet of the first overflow valve PV1 is connect with fuel tank.The entrance and second solenoid valve DT2 of second overflow valve PV2 B hydraulic fluid port connection, the outlet of the second overflow valve PV2 is connect with fuel tank.The P hydraulic fluid port of second solenoid valve DT2 is connect with fuel pump outlet, The T hydraulic fluid port of second solenoid valve DT2 is connect with fuel tank.When power circuit receives the 6th trigger signal, second solenoid valve DT2 must not electricity When, only third overflow valve PV3 is connect with fuel pump outlet, and the outlet pressure of oil pump is controlled by third overflow valve PV3, is corresponded at this time Third operating mode.When power circuit receives five trigger signals, the first electromagnetic coil EL03 of second solenoid valve DT2 is obtained When electricity, the second electromagnetic coil EL04 power loss, the second overflow valve PV2 and third overflow valve PV3 are connect with fuel pump outlet, oil pump Outlet pressure is by the second overflow valve PV2 and third overflow valve PV3 co- controlling, but due to P3 > P2, the outlet pressure of oil pump by Second overflow valve PV2 control, corresponds to the second operating mode.When power circuit receives four trigger signals, second solenoid valve DT2 The first electromagnetic coil EL03 power loss, the second electromagnetic coil EL04 is when obtaining electric, the first overflow valve PV1 and third overflow valve PV3 are It is connect with fuel pump outlet, the outlet pressure of oil pump is by the first overflow valve PV1 and third overflow valve PV3 co- controlling, but due to P3 The outlet pressure of > P1, oil pump are controlled by the first overflow valve PV1, correspond to the first operating mode.It is appreciated that with overflow valve The setting pressure of PV1, PV2, PV3 are respectively P1, P2, P3, and P3 > P1, P3 > P2 is to work normally, can be with operation setting the The pressure value of one overflow valve PV1, the second overflow valve PV2, third overflow valve PV3, simulation site pressure setting.Such as by third overflow The pressure set points less than the first overflow valve PV1 or the second overflow valve PV2 are arranged in the pressure set points of valve PV3, can simulate existing Field pressure sets fault.
Optionally, on the basis of above, it includes the 9th switch SB2 of triggering that power circuit, which receives the 4th trigger signal,；Electricity It includes the 8th switch SB1 of triggering that source circuit, which receives the 5th trigger signal,；It includes triggering that power circuit, which receives the 6th trigger signal, Ten switch SB3.Specifically, the 8th switch SB1 issues Emergency diesel or steam turbine (LLS diesel engine or steam turbine) for simulating Enabling signal i.e. the 5th trigger signal, the 9th switch SB2 is for simulating pressure peace note tank isolating valve 136VB valve opening letter in sending Number i.e. the 4th trigger signal.LLS diesel engine or steam turbine starting, corresponding second operating mode of the non-open state of 136VB valve.It can To be further understood from as the 8th switch SB1 closure, simulation starts LLS diesel engine or steam turbine, the coil of the second relay KA2a obtains electric, and the 9th switch SB2 is not closed, does not issue 136VB valve opening signal, the coil KA3a power loss of third relay When, the normally opened contact KA2d closure of the second relay, the normally-closed contact KA3d closure of third relay, second solenoid valve DT2's First electromagnetic coil EL03 obtains electric, the normally-closed contact KA2e disconnection of the second relay, and the normally opened contact KA3e of third relay is disconnected It opens, the second electromagnetic coil EL04 power loss of second solenoid valve DT2.LLS diesel engine or steam turbine are inactive, 136VB valve opening Corresponding first operating mode.Can be further understood from for, in LLS diesel engine or inactive steam turbine, i.e. the 8th switch SB1 It disconnects, the coil KA2a power loss of the second relay, the 9th switch SB2 closure, simulation discovery 136VB valve opening signal, third When the coil KA3a of relay obtains electric, the normally opened contact KA2d of the second relay is disconnected, the normally-closed contact KA3d of third relay Disconnect, the first electromagnetic coil EL03 power loss of second solenoid valve DT2, the second relay normally-closed contact KA2e closure, third after The normally opened contact KA3e of electric appliance is closed, and the second electromagnetic coil EL04 of second solenoid valve DT2 obtains electric.Tenth switch SB3 is used for mould Quasi- stoppage in transit LLS diesel engine or steam turbine close 136VB valve, LLS diesel engine or steam turbine is inactive, 136VB valve is not opened When its correspond to third operating mode.It further can be interpreted as, in inactive i.e. the second relay of LLS diesel engine or steam turbine When the coil KA2a power loss of device, 136VB valve do not open the coil KA3a power loss of i.e. third relay, the second relay it is normally opened Contact KA2d is disconnected, and the normally-closed contact KA3d closure of third relay, the first electromagnetic coil EL03 of second solenoid valve DT2 loses Electricity, the normally-closed contact KA2e closure of the second relay, the normally opened contact KA3e of third relay are disconnected, second solenoid valve DT2's Second electromagnetic coil EL04 power loss.
Optionally, in an a kind of embodiment of hydraulic test method of the invention, test method further includes the 4th abnormal Mode, the 4th abnormal patterns include: that power circuit receives the 7th trigger signal, and driving second solenoid valve DT2 switches electric hydaulic 130 outlet of pump is not turned on the first overflow valve PV1 and the second overflow valve PV2；Power circuit the 7th trigger signal of reception, second Solenoid valve DT2 is turned off.Specifically, under normal circumstances, LLS diesel engine or steam turbine starting cannot be same with 136VB valve opening When exist, i.e. the coil KA3a of the coil KA2a of the second relay and third relay cannot simultaneously it is electric, opened in 136VB valve When the coil KA3a of i.e. third relay obtains electric when opening, sending LLS diesel engine or steam turbine are simulated when being closed the 8th switch SB1 Enabling signal when, the normally-closed contact KA2c of the second relay is disconnected, the coil KA3a of third relay simulates power loss 136VB valve automatic blocking is closed.And at the scene under actual conditions, it needs temporarily to force to set by wiring by 136VB valve sometimes It is set to open state, at this time if mistake starting LLS diesel engine or steam turbine, 136VB valve can not be automatically closed, the second electromagnetism The the first electromagnetic coil EL03 and the second electromagnetic coil EL04 of valve DT2 must not be electric, operational mode mistake.In this example, The coil KA3a of third relay can be made to be constantly in obtain electricity condition, i.e. simulation 136VB valve by triggering the 7th trigger signal Door by wiring pressure be set as always on state, reclose at this time the 8th switch SB1 connect simulate sending LLS diesel engine or When the enabling signal of steam turbine, the coil KA2a of the second relay obtain it is electric, at this time the coil KA3a of third relay can not power loss, The the first electromagnetic coil EL03 and the second electromagnetic coil EL04 of second solenoid valve DT2 must not be electric, to carry out operational mode mistake Test is the 4th abnormal test.
Optionally, on the basis of above, the 7th trigger signal of power circuit reception includes: can be by triggering the 11st Switch Q6, the 11st switch Q6 of closure issue the 7th trigger signal.
Optionally, in an a kind of embodiment of hydraulic test method of the invention, further includes: in the first operating mode When, light the 6th indicator light HL6；And/or in the second operating mode, the 5th indicator light HL5 is lighted；And/or it is abnormal the 4th When mode, the 7th indicator light HL7 is lighted.Specifically, indicator light HL6 is for simulating pressure peace note tank isolating valve 136VB valve in scene Door state, indicator light HL6 are lighted, and are indicated that 136VB valve opening, indicator light HL6 extinguish, are indicated that 136VB valve is closed.It can be with Understand, in the first operating mode, when the 8th switch SB1 is not closed, the 11st switch Q6 is not closed, when the 9th switch of closure When after SB2, the coil KA3a of third relay obtains electric, and the 6th indicator light HL6 is bright, after the 9th switch SB2 is disconnected, third relay Continue electric under the self-hold circuit effect that the coil KA3a of device is formed by the normally opened contact KA3b of third relay, the 6th instruction Lamp HL6 keeps " bright " state.
For simulating LLS Emergency diesel or steam turbine state, indicator light HL5 is lighted 5th indicator light, indicates diesel engine Or steam turbine is in operating status, indicator light HL5 extinguishes, and indicates that diesel engine or steam turbine are in stoppage in transit state.It is appreciated that When the second operating mode, when being closed after the 8th switch SB1, the coil KA2a of the second relay obtains electric, and the 5th indicator light HL5 is bright, After disconnecting the 8th switch SB1, the coil KA2a of the second relay by the normally opened contact KA2b of the second relay formed from Continue electric under holding circuit effect, the 5th indicator light HL5 keeps " bright " state.In the coil KA2a or third of the second relay When the coil KA3a of relay obtains electric, after pressing the tenth switch SB3, the coil KA2a of the second relay or third relay Coil KA3a will extinguish power loss, the 5th indicator light HL5 or the 6th indicator light HL6.
In four abnormal tests, when being closed the 11st switch Q6, simulate 136VB valve enforced opening, third relay The coil KA3a of device is constantly in obtain electricity condition, when reclosing the 8th switch SB1, the coil KA2a of the second relay also it is electric, The normally opened contact KA2g of second relay and the normally opened contact KA3g of third relay are closed, and the 7th indicator light HL7 is obtained at this time Electricity shows failure alarm signal by the 7th indicator light HL7.
Optionally, in an a kind of embodiment of hydraulic test method of the invention, further includes: the of second solenoid valve When one coil EL03 obtains electric, third indicator light HL3 is lighted；And/or it when the second coil EL04 of second solenoid valve obtains electric, lights 4th indicator light HL4.Specifically, third indicator light HL3 is used to show the excitation situation of the first coil EL03 of second solenoid valve, When EL03 is obtained it is electric when, indicator light HL3 is lighted, and when EL03 power loss, indicator light HL3 does not work；4th indicator light HL4 is for showing the The excitation situation of second coil EL04 of two solenoid valves, when EL04 is obtained it is electric when, indicator light HL4 is lighted, when EL04 power loss, instruction Lamp HL4 does not work.It is appreciated that in normal operating conditions, can indicate the first overflow valve by lighting the 4th indicator light HL4 The state that PV1 is connect with fuel pump outlet, i.e., corresponding first operating mode indicate the second overflow by lighting third indicator light HL3 The state that valve PV2 is connect with fuel pump outlet, i.e., corresponding second operating mode.It can be by referring in third indicator light HL3 and the 4th Show that lamp HL4 is in the state of not working, corresponding instruction the first overflow valve PV1 and the second overflow valve PV2 is not led with fuel pump outlet Lead to the state connect, corresponds to third operating mode.
It should be understood that above embodiments only express the preferred embodiment of the present invention, description is more specific and detailed Carefully, but it cannot be understood as limitations on the scope of the patent of the present invention；It should be pointed out that for the common skill of this field For art personnel, without departing from the inventive concept of the premise, above-mentioned technical characterstic can be freely combined, can also be done Several modifications and improvements out, these are all within the scope of protection of the present invention；Therefore, all to be done with scope of the invention as claimed Equivalents and modification, should belong to the covering scope of the claims in the present invention.

Claims (18)

1. a kind of hydraulic testing apparatus characterized by comprising electric hydraulic pump (130), with the electric hydraulic pump (130) The liquid reserve tank (110) of entry conductor connection, the first solenoid valve (DT1) being connect with the electric hydraulic pump (130) delivery channel, The double acting hydraulic cylinder (140) connecting with the first solenoid valve (DT1) conduit, setting go out in the electric hydraulic pump (130) The first overflow valve (PV1), the second overflow valve (PV2) and third overflow valve (PV3) between mouth and the liquid reserve tank (110)；
The entrance of first overflow valve (PV1) and second overflow valve (PV2) passes through second solenoid valve (DT2) and institute respectively State the connection of electric hydraulic pump (130) delivery channel, the outlet of first overflow valve (PV1) and second overflow valve (PV2) It is connect with the liquid reserve tank (110) conduit, the entrance of the third overflow valve (PV3) and going out for the electric hydraulic pump (130) Mouth conduit connection, the outlet of the third overflow valve (PV3) is connect with the liquid reserve tank (110) conduit；
Stroke baffle (150) are equipped at the top of piston rod (143) exposed junction of the double acting hydraulic cylinder (140), the stroke gear Plate (150) two sides, which are equipped with, to be switched by the first stroke switch (SQ1) and second stroke that the stroke baffle (150) drive (SQ2)；And
With the electric hydraulic pump (130), first solenoid valve (DT1), the second solenoid valve (DT2) and the first row The power circuit of Cheng Kaiguan (SQ1) and second stroke switch (SQ2) connection；
The power circuit for control first solenoid valve (DT1) switch electric hydraulic pump (130) outlet respectively with The first oil pocket (141) or the second oil pocket (142) of the double acting hydraulic cylinder (140) are connected；
The power circuit is also used to control the second solenoid valve (DT2) and switches electric hydraulic pump (130) outlet difference It is connected with first overflow valve (PV1) or second overflow valve (PV2).
2. hydraulic testing apparatus according to claim 1, which is characterized in that further include:
Connect the pressure gauge (160) of the electric hydraulic pump (130) Yu the second solenoid valve (DT2)；And/or
Connect the filter (120) of the electric hydraulic pump (130) Yu the liquid reserve tank (110).
3. hydraulic testing apparatus according to claim 1, which is characterized in that the conduit connection is chosen as transparent hose company It connects；
The double acting hydraulic cylinder (140), first solenoid valve (DT1), the second solenoid valve (DT2), described first are overflow The shell of stream valve (PV1), second overflow valve (PV2) and the third overflow valve (PV3) is all made of transparent material.
4. hydraulic testing apparatus according to claim 1, which is characterized in that the power circuit includes first switch (QS1), fuse (FU1), direct current transducer (210) and the first power circuit being connect with the direct current transducer (210) (220) and second source circuit (230)；
The direct current transducer (210) connect through the fuse (FU1), the first switch (QS1) with external power supply, direct current Converter is the first power circuit (220), second source circuit (230) provides DC power supply；
First power circuit (220) switches the electric hydaulic pump discharge point for controlling first solenoid valve (DT1) It is not connected with the first oil pocket (141) of the double acting hydraulic cylinder or the second oil pocket (142)；
The second source circuit (230) switches the electric hydaulic pump discharge point for controlling the second solenoid valve (DT2) It is not connected with first overflow valve (PV1) or second overflow valve (PV2).
5. hydraulic testing apparatus according to claim 1, which is characterized in that the power circuit further includes second switch (QS2), frequency converter (240), external power supply is through the first switch (QS1), the second switch (QS2) and frequency converter (240) It is connect with the electric hydraulic pump (130).
6. hydraulic testing apparatus according to claim 4, which is characterized in that
First power circuit (220) includes the first relay；
The coil (KA1a) of first relay is through third switch (Q1) and first stroke switch (SQ1) and the direct current Converter (210) connection, the first stroke switch (SQ1) are connected in parallel with the 4th switch (Q2)；
The coil (KA1a) of first relay and a pair of contact (KA1b), the 5th switch (Q3) of first relay It is connect with after second stroke switch (SQ2) series connection with the direct current transducer (210), the second stroke switchs (SQ2) It is connected in parallel with the 6th switch (Q4)；
Second pair contact (KA1c) of the first electromagnetic coil (EL01) of first solenoid valve (DT1) through first relay It is connect with after the 7th switch (Q5) series connection with the direct current transducer (210)；
The second electromagnetic coil (EL02) of first solenoid valve (DT1) is through the third of first relay to contact (KA1d) It is connect with after the 7th switch (Q5) series connection with the direct current transducer (210)；And/or
The second source circuit (230) includes the second relay and third relay；
The coil (KA2a) of second relay is through the 8th switch (SB1) and the tenth switch (SB3) and the direct current transducer (210) it connects；A pair of contact (KA2b) of 8th switch (SB1) and second relay are connected in parallel；
Second pair contact (KA2c) of the coil (KA3a) of the third relay through second relay, the 9th switch (SB2) it is connect with the tenth switch (SB3) with the direct current transducer (210)；9th switch (SB2) and the third The first contact (KA3b) of relay is connected in parallel；The coil (KA3a) of the third relay and through the 11st switch (Q6) with Tenth switch (SB3) connection；
The first electromagnetic coil (EL03) of the second solenoid valve (DT2) is through the third of the third relay to contact (KA3d) Contact (KA2d) is connect with the direct current transducer (210) with the third of second relay；
Fourth contact (KA3e) of the second electromagnetic coil (EL04) of the second solenoid valve (DT2) through the third relay and 4th pair of contact (KA2e) of second relay connect with the direct current transducer (210).
7. hydraulic testing apparatus according to claim 6, which is characterized in that first power circuit (220) further include: First indicator light (HL1) and/or the second indicator light (HL2)；
The first electromagnetic coil (EL01) of first solenoid valve (DT1) is connected in parallel with first indicator light (HL1)；
The second electromagnetic coil (EL02) of first solenoid valve (DT1) is connected in parallel with second indicator light (HL2)；
And/or
The second source circuit (230) further includes third indicator light (HL3), the 4th indicator light (HL4), the 5th indicator light (HL5), one or more of the 6th indicator light (HL6) and the 7th indicator light (HL7)；
The first electromagnetic coil (EL03) of the second solenoid valve (DT2) is connected in parallel with the third indicator light (HL3)；
The second electromagnetic coil (EL04) of the second solenoid valve (DT2) is connected in parallel with the 4th indicator light (HL4)；
Five pair contact (KA2f) of 5th indicator light (HL5) through second relay and the direct current transducer (210) it connects；
Five pair contact (KA3f) of 6th indicator light (HL6) through the third relay and the direct current transducer (210) it connects；
The of six pair contact (KA3g) and second relay of 7th indicator light (HL7) through the third relay Six pairs of contacts (KA2g) connect with the direct current transducer (210).
8. according to hydraulic testing apparatus described in claim 4-6, which is characterized in that the first switch (QS1) and described Two switches (QS2) are on-load switch；
Third switch (Q1), the 4th switch (Q2), the 5th switch (Q3), the 6th switch (Q4), the 7th switch (Q5) and the 11 switches (Q6) are key switch；
8th switch (SB1), the 9th switch (SB2) and the tenth switch (SB3) are button switch.
9. a kind of hydraulic test method using claim 1-8 any one hydraulic testing apparatus characterized by comprising In startup power supply circuit, electric hydraulic pump (130) work, the first solenoid valve (DT1), first stroke switch (SQ1) and second The operating mode that travel switch (SQ2) works normally, and
The power circuit receives the first trigger signal, simulates first abnormal patterns of described first stroke switch (SQ1) failure；
The power circuit receives the second trigger signal, simulates second abnormal patterns of described second stroke switch (SQ2) failure；
The power circuit receives third trigger signal, and the third for simulating the electric hydraulic pump (130) outlet pressure failure is different Norm formula；
The operating mode the following steps are included:
S1, power circuit triggering the first solenoid valve (DT1) switch electric hydraulic pump (130) outlet and double-action hydraulic The second oil pocket (142) of cylinder is connected, and the double-action hydraulic the cylinder piston (144) starts to move along first direction；
S2, the double-action hydraulic the cylinder piston (144) are moved to the stroke at the top of the double-action hydraulic cylinder piston rod outer end Baffle (150) contacts the first stroke switch (SQ1)；
S3, first stroke switch (SQ1) are driven, and the power circuit triggers first solenoid valve (DT1) and switches institute It states electric hydraulic pump (130) outlet to be connected with first oil pocket of double acting hydraulic cylinder (141), the double-action hydraulic the cylinder piston (144) start to move in a second direction；
S4, the double-action hydraulic the cylinder piston (144) are moved to the stroke baffle (150) and contact the second stroke switch (SQ2)；
S5, second stroke switch (SQ2) are driven, and are returned and executed the step S1.
10. test method according to claim 9, which is characterized in that the power circuit receives the first trigger signal, mould The first abnormal patterns for intending first stroke switch (SQ1) failure include:
Triggering third switch (Q1) makes its disconnection, disconnects the coil of first stroke switch (SQ1) and the first relay (KA1a) connection can not be closed failure to simulate the first stroke switch (SQ1)；Or
Triggering the 4th switch (Q2) makes its closure, and the short circuit first stroke switch (SQ1) is to simulate the first stroke switch (SQ1) failure can not be disconnected.
11. test method according to claim 9, which is characterized in that the power circuit receives the second trigger signal, mould The second abnormal patterns for intending second stroke switch (SQ2) failure include:
Triggering the 5th switch (Q3) makes its disconnection, disconnects the coil of second stroke switch (SQ2) and the first relay (KA1a) connection can not be closed failure to simulate the second stroke switch (SQ2)；Or
Triggering the 6th switch (Q4) makes its closure, and the short circuit second stroke switch (SQ2) is to simulate the second stroke switch (SQ2) failure can not be disconnected.
12. test method according to claim 9, which is characterized in that the power circuit receives third trigger signal, mould The third abnormal patterns for intending the electric hydraulic pump (130) outlet pressure failure include:
Triggering the 7th switch (Q5) makes its disconnection, first solenoid valve (DT1) switch electric hydraulic pump (130) outlet with Liquid reserve tank (110) conducting.
13. hydraulic test method according to claim 9, which is characterized in that the hydraulic test method further include:
When the first coil (EL01) of first solenoid valve (DT1) obtains electric, the first indicator light (HL1) is lighted；And/or
When the second coil (EL02) of first solenoid valve (DT1) obtains electric, the second indicator light (HL2) is lighted.
14. test method according to claim 9, which is characterized in that the operating mode includes:
The power circuit receives the 4th trigger signal, and driving second solenoid valve (DT2) switches the electric hydraulic pump (130) and goes out First operating mode of mouth and the first overflow valve (PV1) conducting；
The power circuit receives the 5th trigger signal, and the second solenoid valve (DT2) is driven to switch the electric hydraulic pump (130) the second operating mode with the second overflow valve (PV2) is exported；And
The power circuit receives the 6th trigger signal, drives the second solenoid valve (DT2) to turn off, makes the electric hydraulic pump (130) the third operating mode being not turned on first overflow valve (PV1) and second overflow valve (PV2) is exported.
15. test method according to claim 14, which is characterized in that
It includes the 9th switch (SB2) of triggering that the power circuit, which receives the 4th trigger signal,；
It includes the 8th switch (SB1) of triggering that the power circuit, which receives the 5th trigger signal,；
It includes the tenth switch (SB3) of triggering that the power circuit, which receives the 6th trigger signal,.
16. hydraulic test method according to claim 14, which is characterized in that the test method further includes the 4th abnormal Mode, the 4th abnormal patterns include:
The power circuit receives the 7th trigger signal, and the second solenoid valve (DT2) is driven to switch the electric hydraulic pump (130) outlet is not turned on first overflow valve (PV1) and second overflow valve (PV2).
17. test method according to claim 16, which is characterized in that the power circuit receives the 7th trigger signal packet Include the 11st switch (Q6) of triggering.
18. hydraulic test method according to claim 14, which is characterized in that the hydraulic test method further include:
In first operating mode, the 6th indicator light (HL6) is lighted；And/or
In second operating mode, the 5th indicator light (HL5) is lighted；And/or
In four abnormal patterns, the 7th indicator light (HL7) is lighted；And/or
When the first coil (EL03) of second solenoid valve (DT2) obtains electric, third indicator light (HL3) is lighted；And/or
When the second coil (EL04) of second solenoid valve (DT2) obtains electric, the 4th indicator light (HL4) is lighted.
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