CN205349921U - Hydraulic system common fault simulation experiment table - Google Patents
Hydraulic system common fault simulation experiment table Download PDFInfo
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- CN205349921U CN205349921U CN201620017232.2U CN201620017232U CN205349921U CN 205349921 U CN205349921 U CN 205349921U CN 201620017232 U CN201620017232 U CN 201620017232U CN 205349921 U CN205349921 U CN 205349921U
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Abstract
The utility model provides an inside and outside trouble analogue unit, solenoid valve trouble analogue unit, hydraulic pump air pocket trouble analogue unit, pilot operated compound relief valve internal leakage and spring rupture trouble analogue unit, guide's formula relief pressure valve trouble analogue unit, choke valve trouble analogue unit and the check valve trouble analogue unit of leaking of pneumatic cylinder of hydraulic system common fault simulation experiment table, including looping through the tube coupling. The utility model discloses a hydraulic system common fault simulation experiment table, through the common hydraulic system symptom of simulation on the laboratory bench, simulate like common fault such as hydraulic pump, pneumatic cylinder, overflow valve, relief pressure valve, magenetic exchange valve, choke valve and check valves to make things convenient for student and technical staff to know hydraulic system common fault's reason and symptom, so as troubleshooting rapidly, the efficiency that improves hydraulic system failure diagnosis and get rid of.
Description
Technical field
This utility model relates to a kind of hydraulic system fault Simulation Diagnosis.Particularly relate to a kind of Hydraulic System Breakdown simulated experiment platform.
Background technology
Hydraulic Elements and hydraulic system have the particularity not being entirely identical to plant equipment.The each element of hydraulic test and work fluid are operated in the oil circuit of sealing, unlike plant equipment directly perceived, and just can not check intuitively easily and draw various parameter by the electronic machine such as circuit tester the same as electrical equipment, test pen, the duty of hydraulic test can only lean on only Pressure gauge and effusion meter in equipment to indicate.The fault of hydraulic system has the feature of uncertainty, disguise, multiformity, cause effect relation complexity.Hydraulic system is not easy-to-search reason after fault occurs, therefore the fault diagnosis of hydraulic system is more difficult than the debugging of common mechanical system.If the hydraulic system in modernization continuous process system breaks down suddenly, generally can feed through to full factory and produce the pause of equipment, cause tremendous economic to lose.Therefore how to ensure the properly functioning of hydraulic system, how to find fault in time, find the sign of fault even in advance, be all problem demanding prompt solution.Therefore, the research of Failure Diagnosis of Hydraulic System is increasingly earned widespread respect.
Summary of the invention
Technical problem to be solved in the utility model is to provide the Hydraulic System Breakdown simulated experiment platform of a kind of most common failure simulation being capable of hydraulic pump, hydraulic cylinder, overflow valve, air relief valve, solenoid directional control valve, choke valve and check valve.
This utility model be the technical scheme is that a kind of Hydraulic System Breakdown simulated experiment platform, includes the hydraulic cylinder internal and outernal leakage fault simulation unit, solenoid valve failure analogue unit, bubble chamber of hydraulic pump fault simulation unit, pilot operated compound relief valve internal leakage and spring fracture fault simulation unit, piloted reducer fault simulation unit, choke valve fault simulation unit and the one-way valve fault analogue unit that pass sequentially through pipeline and connect.
Described hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit include: hydraulic cylinder, the hydraulic fluid port of described hydraulic cylinder piston side connects the 3rd choke valve respectively by pipeline, one end of 4th choke valve and the 6th choke valve and the first port of connection three-position four-way electromagnetic directional valve, the hydraulic fluid port of described hydraulic cylinder piston rod side connects the other end of the 4th choke valve respectively by pipeline, one end of 5th choke valve and the second port of connection three-position four-way electromagnetic directional valve, the other end of described 3rd choke valve connects the 5th fuel tank by pipeline, the other end of described 5th choke valve connects the 6th fuel tank by pipeline, 3rd port of described three-position four-way electromagnetic directional valve connects the first port by the 6th choke valve being arranged on pipeline, 4th port of described three-position four-way electromagnetic directional valve connects the 4th fuel tank by pipeline, 3rd port of described 6th choke valve and three-position four-way electromagnetic directional valve also connects hydraulic pump and one end of the second pilot operated compound relief valve respectively commonly through the 4th stop valve being arranged on pipeline, the other end of described second pilot operated compound relief valve connects the 7th fuel tank by the 3rd filter being arranged on pipeline, the other end of described hydraulic pump connects the 3rd fuel tank by the first filter being arranged on pipeline, described 4th stop valve is provided with the first Pressure gauge away from this one end of three-position four-way electromagnetic directional valve.
Described bubble chamber of hydraulic pump fault simulation unit includes: one end connects the 3rd stop valve on this one end connecting the first filter of hydraulic pump by pipeline, the other end of described 3rd stop valve connects one end of the second filter by pipeline, and the other end of described second filter is unsettled setting.
Described pilot operated compound relief valve internal leakage and spring fracture fault simulation unit include: be in parallel the 7th choke valve and the first pilot operated compound relief valve that arrange, wherein, one end of described 7th choke valve and the first pilot operated compound relief valve commonly through pipeline and be arranged on pipeline second stop valve connect the 4th stop valve be provided with first this one end manometric, the other end of described 7th choke valve and the first pilot operated compound relief valve connects the second fuel tank respectively through pipeline.
Described piloted reducer fault simulation unit, choke valve fault simulation unit and one-way valve fault analogue unit include: one end connects the piloted reducer being provided with first this one end manometric of the 4th stop valve by pipeline and the second stop valve being arranged on pipeline, the other end of described piloted reducer connects first throttle valve respectively by pipeline, check valve and second throttle, the other end of described first throttle valve and check valve connects the first fuel tank by pipeline and the second gauge being arranged on pipeline, the other end of described second throttle is by pipeline and the first stop valve being successively set on pipeline, first-class gauge and second gauge connect the first fuel tank.
The pipeline of described piloted reducer connection first throttle valve, check valve and this one end of second throttle is provided with the second Pressure gauge.
A kind of Hydraulic System Breakdown simulated experiment platform of the present utility model, by simulating common hydraulic system fault phenomenon in laboratory table, such as most common failure simulations such as hydraulic pump, hydraulic cylinder, overflow valve, air relief valve, solenoid directional control valve, choke valve and check valves, thus facilitating student and technical staff to understand reason and the phenomenon of the failure of Hydraulic System Breakdown, to fix a breakdown rapidly, improve the efficiency of Failure Diagnosis of Hydraulic System and eliminating.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this utility model Hydraulic System Breakdown simulated experiment platform.
In figure
1.1: first throttle valve 1.2: second throttle
1.3: the three choke valve 1.4: the four choke valves
1.5: the five choke valve 1.6: the six choke valves
1.7: the seven choke valves 2: check valve
3.1: the first stop valve 3.2: the second stop valves
3.3: the three stop valve 3.4: the four stop valves
5: piloted reducer 6: hydraulic cylinder
7: three-position four-way electromagnetic directional valve 8.1 first Pressure gauge
8.2: the second Pressure gauge 9.1 first pilot operated compound relief valves
9.2: the second pilot operated compound relief valves 10: hydraulic pump
11.1: the first filter 11.2: the second filter
11.3: the 3rd filter 12.1: first-class gauge
12.2: second gauge
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, a kind of Hydraulic System Breakdown simulated experiment platform of the present utility model is described in detail.
A kind of Hydraulic System Breakdown simulated experiment platform of the present utility model, includes the hydraulic cylinder internal and outernal leakage fault simulation unit, solenoid valve failure analogue unit, bubble chamber of hydraulic pump fault simulation unit, pilot operated compound relief valve internal leakage and spring fracture fault simulation unit, piloted reducer fault simulation unit, choke valve fault simulation unit and the one-way valve fault analogue unit that pass sequentially through pipeline and connect.
Described hydraulic cylinder internal and outernal leakage fault simulation unit, is by carrying out simulated solution cylinder pressure in-line external leakage fault at the oil-in of a hydraulic cylinder choke valve in parallel；By carrying out the external leakage fault of simulated solution cylinder pressure vent line at the oil-out of a hydraulic cylinder choke valve in parallel；Between the oil inlet and outlet of hydraulic cylinder, a choke valve in parallel carrys out the internal leakage fault of simulated solution cylinder pressure.Described solenoid valve failure analogue unit, is utilize choke valve to be connected with A mouth by the P mouth of reversal valve, simulates the reversal valve internal leakage fault that reversing valve core causes because of reasons such as abrasions.
Described hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit, specifically as shown in Figure 1, include: hydraulic cylinder 6, the hydraulic fluid port C of described hydraulic cylinder 6 piston side connects the 3rd choke valve 1.3 respectively by pipeline, one end of 4th choke valve 1.4 and the 6th choke valve 1.6 and the first port A of connection three-position four-way electromagnetic directional valve 7, the hydraulic fluid port D of described hydraulic cylinder 6 piston rod side connects the other end of the 4th choke valve 1.4 respectively by pipeline, one end of 5th choke valve 1.5 and the second port B of connection three-position four-way electromagnetic directional valve 7, the other end of described 3rd choke valve 1.3 connects the 5th fuel tank 4.5 by pipeline, the other end of described 5th choke valve 1.5 connects the 6th fuel tank 4.6 by pipeline, 3rd port P of described three-position four-way electromagnetic directional valve 7 connects the first port A by the 6th choke valve 1.6 being arranged on pipeline, 4th port T of described three-position four-way electromagnetic directional valve 7 connects the 4th fuel tank 4.4 by pipeline, 3rd port P of described 6th choke valve 1.6 and three-position four-way electromagnetic directional valve 7 also connects one end of hydraulic pump 10 and the second pilot operated compound relief valve 9.2 respectively commonly through the 4th stop valve 3.4 being arranged on pipeline, the other end of described second pilot operated compound relief valve 9.2 connects the 7th fuel tank 4.7 by the 3rd filter 11.3 being arranged on pipeline, the other end of described hydraulic pump 10 connects the 3rd fuel tank 4.3 by the first filter 11.1 being arranged on pipeline, described 4th stop valve 3.4 is provided with the first Pressure gauge 8.1 away from this one end of three-position four-way electromagnetic directional valve 7.
Described bubble chamber of hydraulic pump fault simulation unit, is the air pocket fault carrying out simulated solution press pump by installing a unsettled oil absorption filter.Specifically as shown in Figure 1, include: one end connects the 3rd stop valve 3.3 on this one end connecting the first filter 11.1 of hydraulic pump 10 by pipeline, the other end of described 3rd stop valve 3.3 connects one end of the second filter 11.2 by pipeline, and the other end of described second filter 11.2 is unsettled setting.
Described pilot operated compound relief valve internal leakage and spring fracture fault simulation unit, it is stuck in closed position to simulate overflow spool to be that overflow valve in-line adds stop valve, and on its in-line, a choke valve in parallel simulates overflow valve internal leakage and spring fracture fault.Specifically as shown in Figure 1, include: be in parallel the 7th choke valve 1.7 and the first pilot operated compound relief valve 9.1 arranged, wherein, one end of described 7th choke valve 1.7 and the first pilot operated compound relief valve 9.1 connects this one end being provided with the first Pressure gauge 8.1 of the 4th stop valve 3.4 commonly through pipeline and the second stop valve 3.2 being arranged on pipeline, and the other end of described 7th choke valve 1.7 and the first pilot operated compound relief valve 9.1 connects the second fuel tank 4.2 respectively through pipeline.
Described piloted reducer fault simulation unit, it is utilize a choke valve to communicate with fuel tank, the long-range pressure modulating opening of simulation piloted reducer is connected with drain tap, relief pressure valve cartridge is made to be constantly in open mode, phenomenon of the failure, for reducing pressure, is simulated cone valve with this and valve seat fit clearance is excessive, air relief valve cone valve spring fracture, neglected loading, main valve plug are waited indefinitely fault at open position card.Described choke valve fault simulation unit, is the spool the simulating choke valve phenomenon of the failure stuck in closed position of being connected with stop valve by choke valve；Choke valve is in parallel with choke valve, simulate throttling valve core wear-out failure.Described one-way valve fault analogue unit, is that choke valve is in parallel with check valve, simulates nonreturn valve core wear-out failure.
Described piloted reducer fault simulation unit, choke valve fault simulation unit and one-way valve fault analogue unit, specifically as shown in Figure 1, include: one end connects the piloted reducer 5 of this one end being provided with the first Pressure gauge 8.1 of the 4th stop valve 3.4 by pipeline with the second stop valve 3.2 being arranged on pipeline, the other end of described piloted reducer 5 connects first throttle valve 1.1 respectively by pipeline, check valve 2 and second throttle 1.2, the other end of described first throttle valve 1.1 and check valve 2 connects the first fuel tank 4.1 by pipeline and the second gauge 12.2 being arranged on pipeline, the other end of described second throttle 1.2 is by pipeline and the first stop valve 3.1 being successively set on pipeline, first-class gauge 12.1 and second gauge 12.2 connect the first fuel tank 4.1.
Described piloted reducer 5 connects and is provided with the second Pressure gauge 8.2 on the pipeline of first throttle valve 1.1, check valve 2 and this one end of second throttle 1.2.
Experiment illustrates:
Hydraulic pump 10 air pocket fault simulation: carry out the air pocket fault of simulated solution press pump 10 by installing a second unsettled filter 11.2.
Simulated solution press pump 10 air pocket malfunction test process: the second stop valve 3.2 and the 4th stop valve 3.4 are closed, 3rd stop valve 3.3 is opened, second pilot operated compound relief valve 9.2 is opened, start hydraulic pump 10, air enters in hydraulic pump 10 from the second unsettled filter 11.2 and the 3rd stop valve 3.3, carrys out the air pocket fault of simulated solution press pump with this.
Hydraulic cylinder 6 fault simulation: simulate in-line external leakage fault by the 3rd choke valve 1.3 in parallel at the oil-in place of hydraulic cylinder 6, by simulating oil circuit external leakage fault at the oil-out of hydraulic cylinder 6 the 5th choke valve 1.5 in parallel；Between the oil inlet and outlet of hydraulic cylinder 6, the 4th choke valve 1.4 in parallel carrys out simulated solution cylinder pressure 6 internal leakage fault.
Simulated solution cylinder pressure 6 in-line external leakage malfunction test process: by the second stop valve 3.2 and the 3rd cut-off 3.3 closedown, 4th stop valve 3.4 is opened, 6th choke valve 1.6 cuts out, 3rd choke valve 1.3 is opened, 4th choke valve 1.4 and the 5th choke valve 1.5 are closed, open the second pilot operated compound relief valve 9.2, start pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, electric magnet 2YA on the right of three-position four-way electromagnetic directional valve 7 is energized, in-line fluid flows to: the rodless cavity of the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 the 4th stop valve 3.4 7 right hydraulic cylinders of three-position four-way electromagnetic directional valve 6, fluid is through the 3rd choke valve 1.3 the 5th fuel tank 4.5 simultaneously, fluid does not fully enter hydraulic cylinder rodless cavity, thus the external leakage fault of simulated solution cylinder pressure in-line.
Simulated solution cylinder pressure 6 vent line external leakage malfunction test process: the second stop valve 3.2 and the 3rd stop valve 3.3 are closed, 4th stop valve 3.4 is opened, 6th choke valve 1.6 cuts out, 3rd choke valve 1.3 and the 4th choke valve 1.4 are closed, 5th choke valve 1.5 is opened, open the second pilot operated compound relief valve, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, electric magnet 2YA on the right of three-position four-way electromagnetic directional valve 7 is energized, in-line fluid flows to: the rodless cavity of the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 the 4th stop valve 3.4 7 right hydraulic cylinders of solenoid directional control valve 6.Oil return line fluid flows to: hydraulic cylinder 6 rod chamber three-position four-way electromagnetic directional valve 7 right position the 4th fuel tank 4.4, the fluid simultaneously flowed out from hydraulic cylinder 6 rod chamber also enters the 6th fuel tank 4.6 through the 5th choke valve 1.5, thus the external leakage fault of simulated solution cylinder pressure 6 vent line.
Simulated solution cylinder pressure 6 internal leakage malfunction test process: the second stop valve 3.2 and the 3rd stop valve 3.3 are closed, 4th stop valve 3.4 is closed, 3rd choke valve 1.3 and the 5th choke valve 1.5 are closed, 4th choke valve 1.4 and the 6th choke valve 1.6 are opened, open the second pilot operated compound relief valve 9.2, electric magnet power-off by three-position four-way electromagnetic directional valve 7 both sides, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the 4th stop valve 3.4, in-line fluid flows to: the rodless cavity of the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 the 4th stop valve 3.4 the 6th choke valve 1.6 hydraulic cylinder 6, oil return line fluid flows to: hydraulic cylinder 6 rod chamber the 4th choke valve 1.4 hydraulic cylinder 6 rodless cavity, adjust the opening of the 4th choke valve 1.4, can the internal leakage fault of simulated solution cylinder pressure 6.
Pilot operated compound relief valve spool jam and internal leakage, pilot valve spring fracture fault simulation: add second stop valve 3.2 at the first pilot operated compound relief valve 9.1 in-line and simulate the first pilot operated compound relief valve 9.1 spool jam fault, on its in-line, the 7th choke valve 1.7 in parallel simulates the first pilot operated compound relief valve 9.1 internal leakage and spring fracture fault.
Simulate the spool of the first pilot operated compound relief valve in closed position stuck malfunction test process: by the second stop valve 3.2, 3rd stop valve 3.3 and the 4th stop valve 3.4 are closed, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, by the first pilot operated compound relief valve 9.1, second pilot operated compound relief valve 9.2 fully opens, start hydraulic pump 10, in-line fluid flows to: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second pilot operated compound relief valve 9.2 the 3rd filter 11.3 the 7th fuel tank 4.7, adjust the pressure of the first pilot operated compound relief valve 9.1 and the second pilot operated compound relief valve 9.2 respectively, observe the first Pressure gauge 8.1, the numerical value of the first Pressure gauge 8.1 changes along with the adjustment of the second pilot operated compound relief valve 9.2, and do not change with the pressure adjustment of the first pilot operated compound relief valve 9.1, with this simulate the first pilot operated compound relief valve 9.1 spool in closed position stuck fault.
Simulation pilot operated compound relief valve internal leakage and pilot valve spring fracture malfunction test process: by the second stop valve 3.2, 3rd stop valve 3.3, 4th stop valve 3.4 is closed, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, first pilot operated compound relief valve 9.1 and the second pilot operated compound relief valve 9.2 are opened, 7th choke valve 1.7 cuts out, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the second stop valve 3.2, the pressure of the first pilot operated compound relief valve 9.1 is adjusted to 5MPa, in-line fluid flows to: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second stop valve 3.2 first pilot operated compound relief valve 9.1 second fuel tank 4.2, the opening of the 7th choke valve 1.7 is gradually opened, now in-line fluid flows to and is: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second stop valve 3.2 the 7th choke valve 1.7 and first pilot operated compound relief valve 9.1--the second fuel tank 4.2, along with the opening of the 7th choke valve 1.7 becomes big, the numerical value observing the first Pressure gauge 8.1 can be gradually reduced, until system pressure vanishing, the first pilot operated compound relief valve 9.1 internal leakage and pilot valve spring fracture fault is simulated with this.
Solenoid directional control valve fault simulation: utilize the 6th choke valve 1.6 to be connected with A mouth by the P mouth of three-position four-way electromagnetic directional valve 7, simulates the internal leakage fault that the spool of three-position four-way electromagnetic directional valve 7 causes because of reasons such as abrasions.
Simulation solenoid directional control valve internal leakage malfunction test process: the second stop valve 3.2 and the 3rd stop valve 3.3 are closed, 4th stop valve 3.4 is opened, by the 3rd choke valve 1.3, 4th choke valve 1.4 and the 6th choke valve 1.6 are closed, 5th choke valve 1.5 is opened, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, second pilot operated compound relief valve 9.2 is opened, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the 6th stream valve 1.6, in-line fluid flows to: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 the 4th stop valve 3.4 the 6th choke valve 1.6 hydraulic cylinder 6 rodless cavity, oil return line fluid flows to: hydraulic cylinder 6 rod chamber the 5th choke valve 1.5 the 6th fuel tank 4.6, adjust joint the 6th stream valve 1.6 opening, observe hydraulic cylinder 6 action, three-position four-way electromagnetic directional valve 7 internal leakage fault is simulated with this.
Piloted reducer fault simulation: utilize a first throttle valve 1.1 to communicate with fuel tank, the long-range pressure modulating opening of simulation piloted reducer 5 is connected with drain tap, piloted reducer 5 spool is made to be constantly in open mode, phenomenon of the failure is for reducing pressure, excessive with this cone valve simulating piloted reducer and valve seat fit clearance, air relief valve main spool spring fractures, neglected loading, main valve plug are waited indefinitely fault at open position card.
Cone valve and the valve seat fit clearance of simulation piloted reducer are excessive, air relief valve main spool spring fractures, neglected loading, main valve plug is in the stuck malfunction test process of open position: by the first stop valve 3.1, second stop valve 3.2, 3rd stop valve 3.3 and the 4th stop valve 3.4 are closed, first throttle valve 1.1 and the 7th choke valve 1.7 are closed, first pilot operated compound relief valve 9.1 is closed, by the electric magnet 1YA of three-position four-way electromagnetic directional valve 7 and 2YA power-off, open the second pilot operated compound relief valve 9.2, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, second stop valve 3.2 is opened, in-line fluid flows to: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second stop valve 3.2 piloted reducer 5, adjust the opening of piloted reducer 5, observe the numerical value of the second Pressure gauge 8.2, change along with the adjustment of piloted reducer 5, then choke valve 1.1 is opened, now the value of the second Pressure gauge 8.2 is close to zero, no longer change with the adjustment of piloted reducer 5, simulate piloted reducer 5 cone valve with this and valve seat fit clearance is excessive, air relief valve main spool spring fractures, neglected loading, main valve plug is waited indefinitely fault at open position card.
Choke valve fault simulation: the spool simulating second throttle 1.2 of second throttle 1.2 being connected with the first stop valve 3.1 is stuck fault in closed position；By in parallel to first throttle valve 1.1 and second throttle 1.2, simulate second throttle 1.2 spool wear-out failure.
Simulation throttle valve core is stuck malfunction test process in closed position: by the first stop valve 3.1, second stop valve 3.2, 3rd stop valve 3.3 and the 4th stop valve 3.4 are closed, by first throttle valve 1.1 and the 7th choke valve 1.7 closedown, second throttle 1.2 is opened, first pilot operated compound relief valve 9.1 is closed, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second stop valve 3.2 piloted reducer 5 second throttle 1.2, observe the numerical value of first-class gauge 12.1, now this value is zero, with this simulate the spool of second throttle 1.2 in closed position stuck fault.
Simulation throttle valve core wear-out failure experimentation: by the second stop valve 3.2, 3rd stop valve 3.3 and the 4th stop valve 3.4 are closed, first stop valve 3.1 is opened, first throttle valve 1.1 is opened, 7th choke valve 1.7 cuts out, first pilot operated compound relief valve 9.1 is closed, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second first-class gauge 12.1 second gauge 12.2 the 4th fuel tank 4.1 of stop valve 3.2 piloted reducer 5 second throttle 1.2 first stop valve 3.1, simultaneously from the fluid of piloted reducer 5 outflow also through first throttle valve 1.1, second gauge 12.2, flow into the first fuel tank 4.1, regulate the opening of first throttle valve 1.1, observe first-class gauge 12.1, along with the opening of first throttle valve 1.1 increases, the numerical value of first-class gauge 12.1 gradually decreases, the spool wear-out failure of second throttle 1.2 is simulated with this.
One-way valve fault is simulated: first throttle valve 1.1 is in parallel with check valve 2, simulates the phenomenon of the failure of check valve 2 spool abrasion.
Simulation inner elements of check valve wear-out failure experimentation: by the first stop valve 3.1, second stop valve 3.2, 3rd stop valve 3.3 and the 4th stop valve 3.4 are closed, by first throttle valve 1.1 and the 7th choke valve 1.7 closedown, first pilot operated compound relief valve 9.1 is closed, by three-position four-way electromagnetic directional valve 7 electric magnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, start hydraulic pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3 first filter 11.1 hydraulic pump 10 second stop valve 3.2 piloted reducer 5 first throttle valve 1.1 second gauge 12.2 first fuel tank 4.1, regulate the opening of first throttle valve 1.1, observe second gauge 12.2, along with the opening of first throttle valve 1.1 increases, the numerical value of second gauge 12.2 is gradually increased, the spool wear-out failure of check valve 2 is simulated with this.
Claims (6)
1. a Hydraulic System Breakdown simulated experiment platform, it is characterized in that, include the hydraulic cylinder internal and outernal leakage fault simulation unit, solenoid valve failure analogue unit, bubble chamber of hydraulic pump fault simulation unit, pilot operated compound relief valve internal leakage and spring fracture fault simulation unit, piloted reducer fault simulation unit, choke valve fault simulation unit and the one-way valve fault analogue unit that pass sequentially through pipeline and connect.
2. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 1, it is characterized in that, described hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit include: hydraulic cylinder (6), the hydraulic fluid port (C) of described hydraulic cylinder (6) piston side connects the 3rd choke valve (1.3) respectively by pipeline, one end of 4th choke valve (1.4) and the 6th choke valve (1.6) and first port (A) of connection three-position four-way electromagnetic directional valve (7), the hydraulic fluid port (D) of described hydraulic cylinder (6) piston rod side connects the other end of the 4th choke valve (1.4) respectively by pipeline, one end of 5th choke valve (1.5) and second port (B) of connection three-position four-way electromagnetic directional valve (7), the other end of described 3rd choke valve (1.3) connects the 5th fuel tank (4.5) by pipeline, the other end of described 5th choke valve (1.5) connects the 6th fuel tank (4.6) by pipeline, 3rd port (P) of described three-position four-way electromagnetic directional valve (7) connects the first port (A) by the 6th choke valve (1.6) being arranged on pipeline, 4th port (T) of described three-position four-way electromagnetic directional valve (7) connects the 4th fuel tank (4.4) by pipeline, 3rd port (P) of described 6th choke valve (1.6) and three-position four-way electromagnetic directional valve (7) also connects hydraulic pump (10) and one end of the second pilot operated compound relief valve (9.2) respectively commonly through the 4th stop valve (3.4) being arranged on pipeline, the other end of described second pilot operated compound relief valve (9.2) connects the 7th fuel tank (4.7) by the 3rd filter (11.3) being arranged on pipeline, the other end of described hydraulic pump (10) connects the 3rd fuel tank (4.3) by the first filter (11.1) being arranged on pipeline, described 4th stop valve (3.4) is provided with the first Pressure gauge (8.1) away from this one end of three-position four-way electromagnetic directional valve (7).
3. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 1, it is characterized in that, described bubble chamber of hydraulic pump fault simulation unit includes: one end connects the 3rd stop valve (3.3) on this one end of the connection the first filter (11.1) of hydraulic pump (10) by pipeline, the other end of described 3rd stop valve (3.3) connects one end of the second filter (11.2) by pipeline, and the other end of described second filter (11.2) is unsettled setting.
4. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 1, it is characterized in that, described pilot operated compound relief valve internal leakage and spring fracture fault simulation unit include: be in parallel the 7th choke valve (1.7) and the first pilot operated compound relief valve (9.1) that arrange, wherein, one end of described 7th choke valve (1.7) and the first pilot operated compound relief valve (9.1) connects this one end being provided with the first Pressure gauge (8.1) of the 4th stop valve (3.4) commonly through pipeline and the second stop valve (3.2) being arranged on pipeline, the other end of described 7th choke valve (1.7) and the first pilot operated compound relief valve (9.1) connects the second fuel tank (4.2) respectively through pipeline.
5. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 1, it is characterized in that, described piloted reducer fault simulation unit, choke valve fault simulation unit and one-way valve fault analogue unit include: one end connects the piloted reducer (5) of this one end being provided with the first Pressure gauge (8.1) of the 4th stop valve (3.4) by pipeline with the second stop valve (3.2) being arranged on pipeline, the other end of described piloted reducer (5) connects first throttle valve (1.1) respectively by pipeline, check valve (2) and second throttle (1.2), the other end of described first throttle valve (1.1) and check valve (2) connects the first fuel tank (4.1) by pipeline and the second gauge (12.2) being arranged on pipeline, the other end of described second throttle (1.2) is by pipeline and the first stop valve (3.1) being successively set on pipeline, first-class gauge (12.1) and second gauge (12.2) connect the first fuel tank (4.1).
6. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 5, it is characterized in that, the pipeline of described piloted reducer (5) connection first throttle valve (1.1), check valve (2) and second throttle (1.2) this one end is provided with the second Pressure gauge (8.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620017232.2U CN205349921U (en) | 2016-01-08 | 2016-01-08 | Hydraulic system common fault simulation experiment table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620017232.2U CN205349921U (en) | 2016-01-08 | 2016-01-08 | Hydraulic system common fault simulation experiment table |
Publications (1)
| Publication Number | Publication Date |
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| CN205349921U true CN205349921U (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105443507A (en) * | 2016-01-08 | 2016-03-30 | 唐山学院 | Test bed for simulating common faults of hydraulic systems |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443507A (en) * | 2016-01-08 | 2016-03-30 | 唐山学院 | Test bed for simulating common faults of hydraulic systems |
| CN105443507B (en) * | 2016-01-08 | 2017-08-01 | 唐山学院 | A kind of Hydraulic System Breakdown simulated experiment platform |
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| CF01 | Termination of patent right due to non-payment of annual fee |