CN105443507A - Test bed for simulating common faults of hydraulic systems - Google Patents
Test bed for simulating common faults of hydraulic systems Download PDFInfo
- Publication number
- CN105443507A CN105443507A CN201610012247.4A CN201610012247A CN105443507A CN 105443507 A CN105443507 A CN 105443507A CN 201610012247 A CN201610012247 A CN 201610012247A CN 105443507 A CN105443507 A CN 105443507A
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- throttle valve
- throttle
- simulation unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004088 simulation Methods 0.000 claims abstract description 57
- 150000001875 compounds Chemical class 0.000 claims description 65
- 239000002828 fuel tank Substances 0.000 claims description 47
- 239000012530 fluid Substances 0.000 claims description 41
- 239000003638 chemical reducing agent Substances 0.000 claims description 32
- 230000015556 catabolic process Effects 0.000 claims description 16
- 238000002474 experimental method Methods 0.000 claims description 15
- 238000003745 diagnosis Methods 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000007257 malfunction Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000009467 reduction Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a test bed for simulating common faults of hydraulic systems. The test bed comprises a hydraulic cylinder internal/external leakage fault simulation unit, an electromagnetic valve fault simulation unit, a hydraulic pump cavitation fault simulation unit, a pilot-operated overflow valve internal leakage and spring breaking fault simulation unit, a pilot-operated pressure reducing valve fault simulation unit, a throttle valve fault simulation unit and a one-way valve fault simulation unit, all of which are connected in sequence through pipelines. According to the test bed for simulating common faults of hydraulic systems of the present invention, common fault phenomena of hydraulic systems, such as common faults of a hydraulic pump, a hydraulic cylinder, an overflow valve, a pressure reducing valve, an electromagnetic reversing valve, a throttle valve, a one-way valve and the like, are simulated on the test bed, such that students and technicians can know reasons and fault phenomena of common faults of hydraulic systems conveniently; as a result faults can be eliminated quickly, and the efficiency of fault diagnosis and elimination of hydraulic systems can be improved.
Description
Technical field
The present invention relates to a kind of hydraulic system fault Simulation Diagnosis.Particularly relate to a kind of Hydraulic System Breakdown simulated experiment platform.
Background technique
Hydraulic element and hydraulic system have the particularity not being entirely identical to machinery.The each element of hydraulic equipment and work fluid are operated in the oil circuit of sealing, directly perceived unlike machinery, and just can not can check intuitively easily and draw various parameter by the electronic instrument such as multimeter the same as electrical equipment, test pen, the working state of hydraulic equipment can only lean on only pressure gauge and flowmeter in equipment to indicate.The fault of hydraulic system has the feature of uncertainty, disguise, diversity, causality 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 the pause of full factory manufacturing mechanism, cause tremendous economic to lose.Therefore how to ensure the normal operation of hydraulic system, how Timeliness coverage fault, finding the sign of fault even in advance, is all problem demanding prompt solution.Therefore, the research of Failure Diagnosis of Hydraulic System is more and more earned widespread respect.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of Hydraulic System Breakdown simulated experiment platform that can realize the most common failure simulation of oil hydraulic pump, oil hydraulic cylinder, relief valve, reduction valve, solenoid directional control valve, throttle valve and one-way valve.
The technical solution adopted in the present invention is: a kind of Hydraulic System Breakdown simulated experiment platform, include connected by pipeline successively oil 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, throttle valve fault simulation unit and one-way valve fault analogue unit.
Described oil hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit include: oil hydraulic cylinder, the hydraulic fluid port of described hydraulic cylinder piston side connects the 3rd throttle valve respectively by pipeline, one end of 4th throttle valve and the 6th throttle valve and be connected the first port of 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 throttle valve respectively by pipeline, one end of 5th throttle valve and the second port of connection three-position four-way electromagnetic directional valve, the other end of described 3rd throttle valve connects the 5th fuel tank by pipeline, the other end of described 5th throttle 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 throttle valve be 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 throttle valve and three-position four-way electromagnetic directional valve also distinguishes one end of connecting fluid press pump and the second pilot operated compound relief valve jointly by the 4th stop valve be arranged on pipeline, the other end of described second pilot operated compound relief valve connects the 7th fuel tank by the 3rd filter be arranged on pipeline, the other end of described oil hydraulic pump connects the 3rd fuel tank by the first filter be 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 is by the 3rd stop valve on this one end of connection first filter of pipeline connecting fluid press pump, the other end of described 3rd stop valve connects one end of the second filter by pipeline, 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 throttle valve and the first pilot operated compound relief valve that arrange, wherein, what one end of described 7th throttle valve and the first pilot operated compound relief valve to be connected the 4th stop valve by pipeline jointly with the second stop valve be arranged on pipeline is provided with first this one end manometric, and the other end of described 7th throttle valve and the first pilot operated compound relief valve connects the second fuel tank respectively by pipeline.
Described piloted reducer fault simulation unit, throttle valve fault simulation unit includes with one-way valve fault analogue unit: one end is connected the piloted reducer being provided with first this one end manometric of the 4th stop valve with the second stop valve be arranged on pipeline by pipeline, the other end of described piloted reducer connects first throttle valve respectively by pipeline, one-way valve and second throttle, described first throttle valve is connected first fuel tank by pipeline with the second gauge be arranged on pipeline with the other end of one-way valve, the other end of described second throttle is by pipeline and the first stop valve be successively set on pipeline, first-class gauge is connected the first fuel tank with second gauge.
The pipeline that described piloted reducer connects first throttle valve, one-way 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 invention, by simulating common hydraulic system fault phenomenon on Laboratory Furniture, as most common failure simulations such as oil hydraulic pump, oil hydraulic cylinder, relief valve, reduction valve, solenoid directional control valve, throttle valve and one-way valves, thus facilitate student and technician 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 Hydraulic System Breakdown simulated experiment platform of the present invention.
In figure
1.1: first throttle valve 1.2: second throttle
1.3: the three throttle valve 1.4: the four throttle valve
1.5: the five throttle valve 1.6: the six throttle valve
1.7: the seven throttle valve 2: one-way 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: oil 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: oil hydraulic pump
11.1: the first filter 11.2: the second filters
11.3: the three filters 12.1: first-class gauge
12.2: second gauge
Embodiment
Below in conjunction with embodiment and accompanying drawing, a kind of Hydraulic System Breakdown simulated experiment platform of the present invention is described in detail.
A kind of Hydraulic System Breakdown simulated experiment platform of the present invention, include connected by pipeline successively oil 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, throttle valve fault simulation unit and one-way valve fault analogue unit.
Described oil hydraulic cylinder internal and outernal leakage fault simulation unit is by carrying out simulated solution cylinder pressure in-line external leakage fault at the filler opening of an oil hydraulic cylinder throttle valve in parallel; By carrying out the external leakage fault of simulated solution cylinder pressure vent line at the oil outlet of an oil hydraulic cylinder throttle valve in parallel; Between the oil inlet and outlet of oil hydraulic cylinder, a throttle valve in parallel carrys out the internal leakage fault of simulated solution cylinder pressure.Described solenoid valve failure analogue unit, is utilize throttle valve to be connected with A mouth by the P mouth of selector valve, simulates the selector valve internal leakage fault that changeover valve core causes because of reasons such as wearing and tearing.
Described oil hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit, specifically as shown in Figure 1, include: oil hydraulic cylinder 6, the hydraulic fluid port C of described oil hydraulic cylinder 6 piston side connects the 3rd throttle valve 1.3 respectively by pipeline, one end of 4th throttle valve 1.4 and the 6th throttle valve 1.6 and be connected the first port A of three-position four-way electromagnetic directional valve 7, the hydraulic fluid port D of described oil hydraulic cylinder 6 piston rod side connects the other end of the 4th throttle valve 1.4 respectively by pipeline, one end of 5th throttle valve 1.5 and the second port B of connection three-position four-way electromagnetic directional valve 7, the other end of described 3rd throttle valve 1.3 connects the 5th fuel tank 4.5 by pipeline, the other end of described 5th throttle 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 throttle valve 1.6 be 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 throttle valve 1.6 and three-position four-way electromagnetic directional valve 7 also distinguishes one end of connecting fluid press pump 10 and the second pilot operated compound relief valve 9.2 jointly by the 4th stop valve 3.4 be 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 be arranged on pipeline, the other end of described oil hydraulic pump 10 connects the 3rd fuel tank 4.3 by the first filter 11.1 be 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 is by the 3rd stop valve 3.3 on this one end of connection first filter 11.1 of pipeline connecting fluid press pump 10, the other end of described 3rd stop valve 3.3 connects one end of the second filter 11.2 by pipeline, 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 relief valve in-line adds stop valve, and on its in-line, a throttle valve in parallel simulates relief valve internal leakage and spring fracture fault.Specifically as shown in Figure 1, include: be in parallel the 7th throttle valve 1.7 and the first pilot operated compound relief valve 9.1 arranged, wherein, described 7th throttle valve 1.7 is connected this one end being provided with the first pressure gauge 8.1 of the 4th stop valve 3.4 jointly with one end of the first pilot operated compound relief valve 9.1 with the second stop valve 3.2 be arranged on pipeline by pipeline, the other end of described 7th throttle valve 1.7 and the first pilot operated compound relief valve 9.1 connects the second fuel tank 4.2 respectively by pipeline.
Described piloted reducer fault simulation unit, utilize a throttle valve to communicate with fuel tank, long-range pressure modulating opening and the drain tap of simulation piloted reducer are connected, make relief pressure valve cartridge be in open mode always, phenomenon of the failure for reducing pressure, simulate cone valve with this and valve seat matching gap is excessive, reduction valve cone valve spring fracture, neglected loading, main valve plug in enable possition the fault such as stuck.Described throttle valve fault simulation unit throttle valve is connected the spool of simulating throttle valve with stop valve in the stuck phenomenon of the failure of closed position; Throttle valve is in parallel with throttle valve, simulate throttling valve core wear-out failure.Described one-way valve fault analogue unit is that throttle valve is in parallel with one-way valve, simulates nonreturn valve core wear-out failure.
Described piloted reducer fault simulation unit, throttle valve fault simulation unit and one-way valve fault analogue unit, specifically as shown in Figure 1, include: one end is connected the piloted reducer 5 being provided with this one end of the first pressure gauge 8.1 of the 4th stop valve 3.4 by pipeline and the second stop valve 3.2 be arranged on pipeline, the other end of described piloted reducer 5 connects first throttle valve 1.1 respectively by pipeline, one-way valve 2 and second throttle 1.2, described first throttle valve 1.1 is connected first fuel tank 4.1 by pipeline with the second gauge 12.2 be arranged on pipeline with the other end of one-way valve 2, the other end of described second throttle 1.2 is by pipeline and the first stop valve 3.1 be successively set on pipeline, first-class gauge 12.1 is connected the first fuel tank 4.1 with second gauge 12.2.
The pipeline that described piloted reducer 5 connects first throttle valve 1.1, one-way valve 2 and this one end of second throttle 1.2 is provided with the second pressure gauge 8.2.
Experiment illustrates:
Oil hydraulic pump 10 air pocket fault simulation: the air pocket fault carrying out simulated solution press pump 10 by installing unsettled second 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, primer fluid press pump 10, air enters in oil 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.
Oil hydraulic cylinder 6 fault simulation: simulate in-line external leakage fault by the 3rd throttle valve 1.3 in parallel at the filler opening place of oil hydraulic cylinder 6, by simulating oil circuit external leakage fault at the oil outlet of oil hydraulic cylinder 6 the 5th throttle valve 1.5 in parallel; Between the oil inlet and outlet of oil hydraulic cylinder 6, the 4th throttle 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: the second stop valve 3.2 and the 3rd cut-off 3.3 are closed, 4th stop valve 3.4 is opened, 6th throttle valve 1.6 cuts out, 3rd throttle valve 1.3 is opened, 4th throttle valve 1.4 and the 5th throttle 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, electromagnet 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 right position-oil hydraulic cylinder 6 of the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the four stop valve 3.4-three-position four-way electromagnetic directional valve 7, fluid is through the 3rd throttle valve 1.3-the five fuel tank 4.5 simultaneously, fluid does not all enter oil 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 throttle valve 1.6 cuts out, 3rd throttle valve 1.3 and the 4th throttle valve 1.4 are closed, 5th throttle valve 1.5 is opened, open the second pilot operated compound relief valve, primer fluid press pump 10, second pilot operated compound relief valve 9.2 pressure is adjusted to 6.3MPa, electromagnet 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 right position-oil hydraulic cylinder 6 of the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the four stop valve 3.4-solenoid directional control valve 7.Oil circuit fluid flows to: the right position of oil hydraulic cylinder 6 rod chambers-three-position four-way electromagnetic directional valve 7-the 4th fuel tank 4.4, the fluid simultaneously flowed out from oil hydraulic cylinder 6 rod chamber also enters the 6th fuel tank 4.6 through the 5th throttle 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 throttle valve 1.3 and the 5th throttle valve 1.5 are closed, 4th throttle valve 1.4 and the 6th throttle valve 1.6 are opened, open the second pilot operated compound relief valve 9.2, by the electromagnet power-off on three-position four-way electromagnetic directional valve 7 both sides, primer fluid press 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-the first filter 11.1-oil hydraulic pump 10-the four stop valve 3.4-the six throttle valve 1.6-oil hydraulic cylinder 6, oil circuit fluid flows to: oil hydraulic cylinder 6 rod chamber-the 4th throttle valve 1.4-oil hydraulic cylinder 6 rodless cavity, adjust the opening of the 4th throttle 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 throttle 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 the stuck malfunction test process of closed position: 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 electromagnet 1YA and 2YA power-off, by the first pilot operated compound relief valve 9.1, second pilot operated compound relief valve 9.2 is opened completely, primer fluid press pump 10, in-line fluid flows to: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the second pilot operated compound relief valve 9.2-the three filter 11.3-the seven 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 adjusting of the first pilot operated compound relief valve 9.1, the first pilot operated compound relief valve 9.1 spool is simulated in the stuck fault of closed position with this.
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 electromagnet 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 throttle valve 1.7 cuts out, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting 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-the first filter 11.1-oil hydraulic pump 10-the second stop valve 3.2-the first pilot operated compound relief valve 9.1-the second fuel tank 4.2, the opening of the 7th throttle valve 1.7 is opened gradually, now in-line fluid flows to and is: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the second stop valve 3.2-the seven throttle valve 1.7 and the first pilot operated compound relief valve 9.1--second fuel tank 4.2, opening along with the 7th throttle valve 1.7 becomes large, the numerical value observing the first pressure gauge 8.1 can decline gradually, 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 throttle valve 1.6 to be connected with A mouth by the P mouth of three-position four-way electromagnetic directional valve 7, the internal leakage fault that the spool of simulating three-position four-way electromagnetic directional valve 7 causes because of reasons such as wearing and tearing.
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 throttle valve 1.3, 4th throttle valve 1.4 and the 6th throttle valve 1.6 are closed, 5th throttle valve 1.5 is opened, by three-position four-way electromagnetic directional valve 7 electromagnet 1YA and 2YA power-off, second pilot operated compound relief valve 9.2 is opened, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting to 6.3MPa, open the 6th stream valve 1.6, in-line fluid flows to: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the four stop valve 3.4-the six throttle valve 1.6-oil hydraulic cylinder 6 rodless cavity, oil circuit fluid flows to: oil hydraulic cylinder 6 rod chamber-the 5th throttle valve 1.5-the six fuel tank 4.6, adjustment joint the 6th flows valve 1.6 opening, observe oil 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, long-range pressure modulating opening and the drain tap of simulation piloted reducer 5 are connected, make piloted reducer 5 spool be in open mode always, phenomenon of the failure for reducing pressure, simulate the cone valve of piloted reducer with this and valve seat matching gap is excessive, reduction valve main spool spring fractures, neglected loading, main valve plug in enable possition the fault such as stuck.
Cone valve and the valve seat matching gap of simulation piloted reducer are excessive, reduction valve main spool spring fractures, neglected loading, main valve plug is stuck malfunction test process in enable possition: 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 throttle valve 1.7 are closed, first pilot operated compound relief valve 9.1 is closed, by the electromagnet 1YA of three-position four-way electromagnetic directional valve 7 and 2YA power-off, open the second pilot operated compound relief valve 9.2, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting to 6.3MPa, second stop valve 3.2 is opened, in-line fluid flows to: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the second stop valve 3.2-piloted reducer 5, the opening of adjustment piloted reducer 5, observe the numerical value of the second pressure gauge 8.2, change along with the adjustment of piloted reducer 5, then throttle 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, piloted reducer 5 cone valve is simulated and valve seat matching gap is excessive with this, reduction valve main spool spring fractures, neglected loading, main valve plug is the fault such as stuck in enable possition.
Throttle valve fault simulation: the spool of simulating second throttle 1.2 of second throttle 1.2 being connected with the first stop valve 3.1 is in the stuck fault of closed position; By first throttle valve 1.1 and second throttle 1.2 parallel connection, simulate second throttle 1.2 spool wear-out failure.
Simulation throttle valve core is in the stuck malfunction test process of 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 throttle 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 electromagnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the 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, the spool of simulating second throttle 1.2 with this is in the stuck fault of closed position.
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 throttle valve 1.7 cuts out, first pilot operated compound relief valve 9.1 is closed, by three-position four-way electromagnetic directional valve 7 electromagnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the second stop valve 3.2-piloted reducer 5-second throttle 1.2-the first stop valve 3.1-first-class gauge 12.1-second gauge 12.2-the four fuel tank 4.1, the fluid simultaneously flowed out from piloted reducer 5 is 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 reduces gradually, 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 one-way valve 2, simulates the phenomenon of the failure of one-way valve 2 spool wearing and tearing.
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 throttle valve 1.7 closedown, first pilot operated compound relief valve 9.1 is closed, by three-position four-way electromagnetic directional valve 7 electromagnet 1YA and 2YA power-off, open the second pilot operated compound relief valve 9.2, primer fluid press pump 10, by the second pilot operated compound relief valve 9.2 pressure adjusting to 6.3MPa, open the second stop valve 3.2, now fluid flows to and is: the 3rd fuel tank 4.3-the first filter 11.1-oil hydraulic pump 10-the second stop valve 3.2-piloted reducer 5-first throttle valve 1.1-second gauge 12.2-the 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 increases gradually, the spool wear-out failure of one-way valve 2 is simulated with this.
Claims (6)
1. a Hydraulic System Breakdown simulated experiment platform, it is characterized in that, include connected by pipeline successively oil 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, throttle valve fault simulation unit and one-way valve fault analogue unit.
2. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 1, it is characterized in that, described oil hydraulic cylinder internal and outernal leakage fault simulation unit and solenoid valve failure analogue unit include: oil hydraulic cylinder (6), the hydraulic fluid port (C) of described oil hydraulic cylinder (6) piston side connects the 3rd throttle valve (1.3) respectively by pipeline, one end of 4th throttle valve (1.4) and the 6th throttle valve (1.6) and be connected first port (A) of three-position four-way electromagnetic directional valve (7), the hydraulic fluid port (D) of described oil hydraulic cylinder (6) piston rod side connects the other end of the 4th throttle valve (1.4) respectively by pipeline, one end of 5th throttle valve (1.5) and second port (B) of connection three-position four-way electromagnetic directional valve (7), the other end of described 3rd throttle valve (1.3) connects the 5th fuel tank (4.5) by pipeline, the other end of described 5th throttle 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 throttle valve (1.6) be 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, the 3rd port (P) also common one end being distinguished connecting fluid press pump (10) and the second pilot operated compound relief valve (9.2) by the 4th stop valve (3.4) be arranged on pipeline of described 6th throttle valve (1.6) and three-position four-way electromagnetic directional valve (7), 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) be arranged on pipeline, the other end of described oil hydraulic pump (10) connects the 3rd fuel tank (4.3) by the first filter (11.1) be 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 is by the 3rd stop valve (3.3) on this one end of connection first filter (11.1) of pipeline connecting fluid press pump (10), the other end of described 3rd stop valve (3.3) connects one end of the second filter (11.2) by pipeline, 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 throttle valve (1.7) and the first pilot operated compound relief valve (9.1) that arrange, wherein, described 7th throttle valve (1.7) is connected this one end being provided with the first pressure gauge (8.1) of the 4th stop valve (3.4) jointly with one end of the first pilot operated compound relief valve (9.1) with the second stop valve (3.2) be arranged on pipeline by pipeline, the other end of described 7th throttle valve (1.7) and the first pilot operated compound relief valve (9.1) connects the second fuel tank (4.2) respectively by 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, throttle valve fault simulation unit includes with one-way valve fault analogue unit: one end is connected the piloted reducer (5) being provided with this one end of the first pressure gauge (8.1) of the 4th stop valve (3.4) with the second stop valve (3.2) be arranged on pipeline by pipeline, the other end of described piloted reducer (5) connects first throttle valve (1.1) respectively by pipeline, one-way valve (2) and second throttle (1.2), described first throttle valve (1.1) is connected first fuel tank (4.1) by pipeline with the second gauge (12.2) be arranged on pipeline with the other end of one-way valve (2), the other end of described second throttle (1.2) is by pipeline and the first stop valve (3.1) be successively set on pipeline, first-class gauge (12.1) is connected the first fuel tank (4.1) with second gauge (12.2).
6. a kind of Hydraulic System Breakdown simulated experiment platform according to claim 5, it is characterized in that, the pipeline that described piloted reducer (5) connects first throttle valve (1.1), one-way 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 |
|---|---|---|---|
| CN201610012247.4A CN105443507B (en) | 2016-01-08 | 2016-01-08 | A kind of Hydraulic System Breakdown simulated experiment platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012247.4A CN105443507B (en) | 2016-01-08 | 2016-01-08 | A kind of Hydraulic System Breakdown simulated experiment platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105443507A true CN105443507A (en) | 2016-03-30 |
| CN105443507B CN105443507B (en) | 2017-08-01 |
Family
ID=55554045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610012247.4A Expired - Fee Related CN105443507B (en) | 2016-01-08 | 2016-01-08 | A kind of Hydraulic System Breakdown simulated experiment platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443507B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356910A (en) * | 2018-09-13 | 2019-02-19 | 上海宝钢工业技术服务有限公司 | The test macro and method of position internal leakage in hydraulic cylinder |
| CN109441911A (en) * | 2018-12-27 | 2019-03-08 | 燕山大学 | A kind of aircraft hydraulic pressure of pipe line oil leakage simulator stand |
| CN109900441A (en) * | 2017-12-11 | 2019-06-18 | 中国石油大学(华东) | A kind of experimental rig and test method for testing non-API casing adapter air-tightness |
| CN111028629A (en) * | 2019-12-19 | 2020-04-17 | 武汉华喜特种液压设备有限公司 | Multifunctional environment-friendly water hydraulic teaching experiment table |
| CN115076086A (en) * | 2022-06-16 | 2022-09-20 | 燕山大学 | Fault simulation method and test device for plunger pump under multiple working conditions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335057Y (en) * | 2008-11-28 | 2009-10-28 | 西安建筑科技大学 | Multisource diagnostic information acquisition experimental device for hydraulic equipment |
| CN201809588U (en) * | 2010-10-13 | 2011-04-27 | 江苏鸿瑞昌泰纺织有限公司 | Knitted fabric production system |
| CN103775435A (en) * | 2014-01-09 | 2014-05-07 | 浙江大学 | Testing system of pilot-operated type load control valve |
| CN104061208A (en) * | 2014-07-02 | 2014-09-24 | 北京机械设备研究所 | Online fault diagnosis method for hydraulic system |
| WO2015064825A1 (en) * | 2013-10-30 | 2015-05-07 | 제일 이엔에스 주식회사 | Insulation gasket provided with metal o-ring for high-temperature and high-pressure conditions |
| CN205349921U (en) * | 2016-01-08 | 2016-06-29 | 唐山学院 | Hydraulic system common fault simulation experiment table |
-
2016
- 2016-01-08 CN CN201610012247.4A patent/CN105443507B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335057Y (en) * | 2008-11-28 | 2009-10-28 | 西安建筑科技大学 | Multisource diagnostic information acquisition experimental device for hydraulic equipment |
| CN201809588U (en) * | 2010-10-13 | 2011-04-27 | 江苏鸿瑞昌泰纺织有限公司 | Knitted fabric production system |
| WO2015064825A1 (en) * | 2013-10-30 | 2015-05-07 | 제일 이엔에스 주식회사 | Insulation gasket provided with metal o-ring for high-temperature and high-pressure conditions |
| CN103775435A (en) * | 2014-01-09 | 2014-05-07 | 浙江大学 | Testing system of pilot-operated type load control valve |
| CN104061208A (en) * | 2014-07-02 | 2014-09-24 | 北京机械设备研究所 | Online fault diagnosis method for hydraulic system |
| CN205349921U (en) * | 2016-01-08 | 2016-06-29 | 唐山学院 | Hydraulic system common fault simulation experiment table |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900441A (en) * | 2017-12-11 | 2019-06-18 | 中国石油大学(华东) | A kind of experimental rig and test method for testing non-API casing adapter air-tightness |
| CN109356910A (en) * | 2018-09-13 | 2019-02-19 | 上海宝钢工业技术服务有限公司 | The test macro and method of position internal leakage in hydraulic cylinder |
| CN109441911A (en) * | 2018-12-27 | 2019-03-08 | 燕山大学 | A kind of aircraft hydraulic pressure of pipe line oil leakage simulator stand |
| CN109441911B (en) * | 2018-12-27 | 2024-03-26 | 燕山大学 | Hydraulic oil leakage simulation test bed for aircraft pipeline |
| CN111028629A (en) * | 2019-12-19 | 2020-04-17 | 武汉华喜特种液压设备有限公司 | Multifunctional environment-friendly water hydraulic teaching experiment table |
| CN115076086A (en) * | 2022-06-16 | 2022-09-20 | 燕山大学 | Fault simulation method and test device for plunger pump under multiple working conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105443507B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105443507A (en) | Test bed for simulating common faults of hydraulic systems | |
| CN106949118B (en) | A kind of hydraulic cylinder durability testing stand | |
| CN103939421B (en) | A kind of method for testing fatigue for hydraulic cylinder and device | |
| KR20180099687A (en) | Pressure compensation unit | |
| CN102444643B (en) | A kind of test stand for hydraulic element | |
| WO2022268228A1 (en) | Gas-liquid linkage actuating mechanism for main-steam isolation valve of nuclear power plant | |
| CN103994111B (en) | A kind of hydraulic bolt lift platform hydraulic control system | |
| CN205349921U (en) | Hydraulic system common fault simulation experiment table | |
| CN105782151A (en) | Hydraulic servo valve and control method thereof | |
| KR100564338B1 (en) | Safety valve bypass element tester | |
| CN104047918B (en) | Double linked one-way valve | |
| DE102016004997A1 (en) | Gas flow restrictor for a fuel system and method of using the same | |
| DE10152414B4 (en) | hydraulic cylinders | |
| CN105545878A (en) | Transient-pressure oil supply system for multi-way valve test stand | |
| RU2509247C1 (en) | Electric pneumatic valve | |
| CN104141652A (en) | Hydraulic loading equipment fault protecting device | |
| CN203836304U (en) | High-pressure safety pilot valve | |
| CN206072016U (en) | A kind of pressure maintaining valve test equipment oil way switching mechanism | |
| CN106678112B (en) | A kind of underwater cylinder control system | |
| CN205013806U (en) | Electromagnetism clack box oil circuit auto -change over device | |
| CN105134679B (en) | High-flow high-pressure bypass loading device for hydraulic system | |
| CN106289732A (en) | A kind of hydraulic multitandem valve testing stand | |
| CN104948769A (en) | Cartridge valve and control method | |
| WO2016054611A1 (en) | Energy saving directional-control valves for providing input-output compatibility with standard non-energy saving directional-control valves | |
| CN210266003U (en) | Plug-in three-way electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170801 |