CN106226045A - A kind of dry testing method for pressure limiting valve opening pressure and device - Google Patents
A kind of dry testing method for pressure limiting valve opening pressure and device Download PDFInfo
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- CN106226045A CN106226045A CN201610543516.XA CN201610543516A CN106226045A CN 106226045 A CN106226045 A CN 106226045A CN 201610543516 A CN201610543516 A CN 201610543516A CN 106226045 A CN106226045 A CN 106226045A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The open a kind of dry testing method for pressure limiting valve opening pressure of the present invention and device；Including source of the gas, pressure regulator valve, proportional pressure-reducing valve, supercharger, gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve, electric control gear；Source of the gas, pressure regulator valve, proportional pressure-reducing valve, supercharger, gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve are sequentially connected in series pipeline and connect；Aerofluxus two-way electromagnetic valve is connected on the pipeline between gas tank and gas flowmeter；Electric control gear electricly connects with gas flowmeter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve；Supercharger continues supercharging, and pressure is constantly rising；Pressure limiting valve opening pressure detection is accurately and repeatable accuracy is the highest；Or upper limit pump stuck to pressure limiting valve, is very easy to detect；Test method is simple, and cost is extremely low, and the test period is the shortest, does not affect product cleannes index, good operational environment, and transport is convenient.
Description
Technical field
The invention belongs to lubricating oil pump and gauge check technical field, relate to a kind of dry testing method for pressure limiting valve opening pressure
And device；Open pressure dry testing method and device particularly to a kind of engine oil pump pressure-limiting valve, be particularly well-suited to various forms
Steel ball class, the engine oil pump pressure-limiting valve detection of plunger-type.
Background technology
Traditional engine oil pump pressure-limiting valve is opened pressure test method and is used oil as test(ing) medium, rating test oil temperature,
Under viscosity, speed conditions, utilize rating test pressure needed for governor valve control lubricating oil pump product, the lubricating oil pump when closing regulation valve
Oil-out pressure increases, and when more than pressure limiting valve opening pressure, pressure limiting valve is opened, and obtains pressure limiting valve now by pressure transmitter
Unlatching pressure.Traditional test of the pressure limiting valve opening pressure with oil as medium, experimentation cost is high, and beat is slow, product after test
Carrying out draining process, test drains still oil residual in rear product, have certain pollution to product, and product cleannes index is not
Easily reach, storage, transport and user assembled use are made troubles.
Known CN1908609A dry testing method for pressure limiting valve opening pressure, is different from a kind of pressure limiting of the present invention
Valve opening pressure dry testing method and device；Its device includes pre-loading line, pressure piping, pre-loading line and pressure inlet
Road is connected in parallel；Detection method is to first have to the pressure limiting valve of detection is carried out pre-inflation, and after pre-inflation, air pressure need to stablize 2-10
Second；Make pressure limiting valve reach to seal, reach stable gas pressure；Again by pressure piping supercharging in pressure limiting valve cavity, its pressure piping
The gas of supercharging is quantitative；Pressurization gas acts on pressure limiting valve plunger or steel ball, when gas pressure is more than pressure valve spring
During pretightning force, pressure limiting valve plunger or steel ball are opened, and pressure transducer detects the peak of now air pressure simultaneously；Supercharging tolerance is once
Entirely consume；The method can not be detected pressure limiting valve activity displacement；And to pressure limiting valve is stuck but pressure limiting valve has the special feelings such as leakage
Condition can not be made detection and differentiate.
Summary of the invention
The invention discloses a kind of dry testing method for pressure limiting valve opening pressure and device, to solve in prior art with oil
Pressure limiting valve opening pressure for medium is tested, and experimentation cost is high, and beat is slow, and after test, product to carry out draining process, test drip
After oil, product still has oil residual, have certain pollution, product cleannes index to be difficult to reach to product, to store, transport and
User assembled use is made troubles；Pressure limiting valve opening pressure dry testing can not be detected pressure limiting valve activity displacement；And to pressure limiting
Valve is stuck but pressure limiting valve has the special circumstances such as leakage can not make the problems such as detection differentiation.
Dry testing method for pressure limiting valve opening pressure of the present invention: limit as medium, utilization using air or other gaseous atmospheres
The gas pressure phase separation equilibrium principle that the active force of pressure valve spring and lubricating oil pump high pressure chest are filled with；By pressure limiting valve body move to
The change inflating tolerance during open position judges pressure limiting valve opening pressure, and this tolerance is by gas flowmeter in loading line
Detect；Before test, inflation two-way electromagnetic valve is connected with master body pipeline, calibrating test device；During test, inflate two-way
Electromagnetic valve is connected with test block pressure limiting valve pipeline.
Including:
The first step, detection pressure limiting valve opening pressure:
Before test, aerofluxus two-way electromagnetic valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve is by the gas test through pressure regulator valve
Pressure medium stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit；Examination
Test workpiece pressure limiting valve to be tightly connected with inflation two-way electromagnetic valve pipeline；When starting to test, inflation two-way electromagnetic valve is opened, and source of the gas is held
Continue and pump into gas test medium；A constant-speed ratio precise pressure regulation pressed by gas test medium passing ratio air relief valve through pressure regulator valve；
The intensified device of gas test medium exported by proportional pressure-reducing valve continues supercharging to gas tank；Gas test medium through gas tank,
Gas flowmeter, pressure transducer, inflation two-way electromagnetic valve are inflated to test piece pressure limiting valve；Gas flowmeter detected gas is tried
Test rate-of flow；When gas flowmeter detected gas test(ing) medium flow reaches the flow value set, pressure transducer detection
Gas test pressure medium value is pressure limiting valve opening pressure value.
Second step, aerofluxus is initial with recovery:
Inflation two-way electromagnetic valve is closed, and aerofluxus two-way electromagnetic valve is opened, and in assay device, gas test medium passes through aerofluxus two-way
Solenoid valve vents；When the gas test pressure medium value of pressure transducer detection is less than initial pressure value, aerofluxus two-way electromagnetism
Valve cuts out；The regulation of gas test pressure medium is restored to initial pressure value by proportional pressure-reducing valve, in case test next time；Guarantee test
Repeatability precision.
Dry testing method for pressure limiting valve opening pressure of the present invention: proportional pressure-reducing valve regulation gas test pressure medium value with
The difference of pressure limiting valve opening pressure lower limit is more than or equal to 0.05MPa.
Dry testing method for pressure limiting valve opening pressure of the present invention: also include pressure sensing before test piece pressure limiting valve detects
Device test pressure limiting valve opening pressure limit value is demarcated；Including:
Before demarcation, aerofluxus two-way electromagnetic valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve is by the gas test through pressure regulator valve
Pressure medium stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit；Will
Pressure limiting valve opening pressure master body is tightly connected with inflation two-way electromagnetic valve pipeline；Pressure limiting valve opening pressure with caliberating device
Limit value；Timing signal, inflation two-way electromagnetic valve unlatching, source of the gas persistently pumps into gas test medium；Gas test through pressure regulator valve
A constant-speed ratio precise pressure regulation pressed by medium passing ratio air relief valve；The intensified device of gas test medium exported by proportional pressure-reducing valve to
Gas tank continues supercharging；Gas test medium through gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve to mark
Quasi-exemplar is inflated；Master body pressure limiting valve is opened, gas flowmeter detection stream when record established standards exemplar pressure limiting valve are opened
Value, and the pressure limiting valve opening pressure limit value of nominal pressure sensor detection；After demarcation, inflation two-way electromagnetic valve is closed, aerofluxus
Two-way electromagnetic valve is opened, and in assay device, gas test medium passes through aerofluxus two-way electromagnetic valve aerofluxus；When pressure transducer detects
Gas test pressure medium value less than pressure limiting valve opening pressure lower limit time, aerofluxus two-way electromagnetic valve close；Proportional pressure-reducing valve
Restoring the regulation of gas test pressure medium to initial pressure value, demarcation terminates, and takes off master body from test station.
Master body includes pressure limiting valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar；Point
Pressure limiting valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar are not installed on test station pressure limiting
On the position of valve, with the pressure limiting valve opening pressure upper and lower bound of caliberating device respectively.
Pressure limiting valve opening pressure dry testing device of the present invention includes source of the gas, pressure regulator valve, proportional pressure-reducing valve, supercharger, storage
Gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve, electric control gear；Source of the gas, pressure regulation
Valve, proportional pressure-reducing valve, supercharger, gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve are sequentially connected in series pipeline
Connect；The speed of proportional pressure-relief valve control supercharging, it is ensured that detection accurate and repeated；Supercharger, gas tank guarantee in test
Moment provides the aeration quantity of enough increases；Aerofluxus two-way electromagnetic valve is connected to the pipeline between gas tank and gas flowmeter
On；Electric control gear electricly connects with gas flowmeter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve；Initially
State, aerofluxus two-way electromagnetic valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve is by the gas test medium pressure through pressure regulator valve
Power stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit 0.05MPa；
When starting to test, inflation two-way electromagnetic valve is opened, and inflates to pressure limiting valve；When gas flowmeter detected gas flow reaches to set
Flow value time, electric control gear controls the gas test pressure medium value in pressure transducer signal piping；Meanwhile, inflation two-way
Closed electromagnetic valve, aerofluxus two-way electromagnetic valve is opened；When the gas test pressure medium value of pressure transducer detection is less than initial pressure
During force value, aerofluxus two-way electromagnetic valve is closed, and bleed pressure is regulated to initial pressure value by proportional pressure-reducing valve；This takes turns off-test.
The supercharger of pressure limiting valve opening pressure dry testing device of the present invention inputs with output pressure ratio more than or equal to 1:4.
Pressure limiting valve opening pressure dry testing device of the present invention also includes deafener；Deafener and aerofluxus two-way electromagnetic valve pipe
Road connects, and reduces noise when aerofluxus two-way electromagnetic valve opens aerofluxus.
Pressure limiting valve opening pressure dry testing device of the present invention also includes master body；Master body two, including pressure limiting
Valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar, master body is demarcated by oil formula testing stand.
The positive effect of the present invention is: pressure limiting valve opening pressure detection is accurately and repeatable accuracy is the highest；To pressure limiting valve
Stuck or upper limit pump, is very easy to detect；Test method is simple, and cost is extremely low, and the test period is the shortest, does not affect product
Product cleannes index, good operational environment, transport is convenient.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
In figure: 1 source of the gas, 2 pressure regulator valves, 3 proportional pressure-reducing valves, 4 superchargers, 5 gas tanks, 6 gas flowmeters, 7 pressure transducers, 8
Inflation two-way electromagnetic valve, 9 master bodies, 10 aerofluxus two-way electromagnetic valves, 11 deafeners, 12 test piece pressure limiting valves.
Detailed description of the invention
Embodiments of the invention are described in detail below in conjunction with accompanying drawing.
First embodiment of the invention is as it is shown in figure 1, pressure limiting valve opening pressure dry testing device includes source of the gas 1, pressure regulator valve
2, the supercharger 4 of 3, four times of pressure ratios of proportional pressure-reducing valve, gas tank 5, gas flowmeter 6, pressure transducer 7, inflation two energising
Magnet valve 8, master body 9, aerofluxus two-way electromagnetic valve 10, deafener 11, electric control gear；Master body 9 two, leaves including pressure limiting valve
Opening upper pressure limit master body 9 and pressure limiting valve opening pressure lower limit standard exemplar 9, master body 9 is accurately marked by oil formula testing stand
Fixed；Source of the gas 1, pressure regulator valve 2, proportional pressure-reducing valve 3, supercharger 4, gas tank 5, gas flowmeter 6, pressure transducer 7, inflation two-way
Electromagnetic valve 8 is sequentially connected in series pipeline and connects；Proportional pressure-reducing valve 3 controls the speed of supercharging, it is ensured that detection accurate and repeated；Four times
The supercharger 4 of pressure ratio, gas tank 5 guarantee that in test, moment provides the aeration quantity of enough increases；Aerofluxus two-way electromagnetic valve 10
It is connected on the pipeline between gas tank 5 and gas flowmeter 6；Deafener 11 is connected with aerofluxus two-way electromagnetic valve 10 pipeline；Electricity
Control device electricly connects with gas flowmeter 6, pressure transducer 7, inflation two-way electromagnetic valve 8, aerofluxus two-way electromagnetic valve 10；Initially
State, aerofluxus two-way electromagnetic valve 10, inflation two-way electromagnetic valve 8 close, proportional pressure-reducing valve 3 is by the air pressure through pressure regulator valve 2
Stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit 0.05MPa；When
When starting to test, inflation two-way electromagnetic valve 8 is opened, and source of the gas 1 persistently pumps into air；Air passing ratio through pressure regulator valve 2 subtracts
Pressure valve 3 is by a constant-speed ratio precise pressure regulation；The air exported by proportional pressure-reducing valve 3 through the supercharger 4 of four times of pressure ratios to gas tank 5
Continue supercharging；Air through gas tank 5, gas flowmeter 6, pressure transducer 7, inflation two-way electromagnetic valve 8 to test piece pressure limiting
Valve 12 is inflated；When gas flowmeter 6 detected gas flow reaches the flow value set, electric control gear controls pressure transducer 7
Air pressure value in signal piping；Meanwhile, inflation two-way electromagnetic valve 8 is closed, and aerofluxus two-way electromagnetic valve 10 is opened；When pressure passes
The air pressure value of sensor 7 detection is closed less than aerofluxus two-way electromagnetic valve 10 during initial pressure value, and proportional pressure-reducing valve 3 is by source of the gas pressure
Power regulates to initial pressure value, and this takes turns off-test.
Test method, using air as medium, utilizes the gas that the active force of pressure valve spring and lubricating oil pump high pressure chest are filled with
Pressure phase separation equilibrium principle；By pressure limiting valve body move to during open position inflate tolerance change judge that pressure limiting valve is opened
Pressure, this tolerance is detected by gas flowmeter in loading line 6；Before test, inflation two-way electromagnetic valve 8 and standard sample
Part 9 pipeline connects, calibrating test device；During test, inflation two-way electromagnetic valve 8 is connected with test block pressure limiting valve 12 pipeline.
Detailed process is as follows:
The first step, device normalization:
Master body 9 includes pressure limiting valve opening pressure upper limit master body 9 and pressure limiting valve opening pressure lower limit standard exemplar 9；Point
Pressure limiting valve opening pressure upper limit master body 9 and pressure limiting valve opening pressure lower limit standard exemplar 9 are not installed on test station examination
Test on the position of workpiece pressure limiting valve 12, with the pressure limiting valve opening pressure upper and lower bound of caliberating device respectively；
Before test, aerofluxus two-way electromagnetic valve 10, inflation two-way electromagnetic valve 8 are closed；Proportional pressure-reducing valve 3 is by the sky through pressure regulator valve 2
Atmospheric pressure stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit
0.05MPa；Pressure limiting valve opening pressure master body 9 is installed on the position of test station test piece pressure limiting valve 12；Start
During device normalization, inflation two-way electromagnetic valve 8 is opened, and source of the gas 1 persistently pumps into air；Air passing ratio through pressure regulator valve 2 subtracts
Pressure valve 3 is by a constant-speed ratio precise pressure regulation；The air exported by proportional pressure-reducing valve 3 through the supercharger 4 of four times of pressure ratios to gas tank 5
Continue supercharging；Air fills to master body 9 through gas tank 5, gas flowmeter 6, pressure transducer 7, inflation two-way electromagnetic valve 8
Gas；Master body 9 pressure limiting valve is opened, and when record established standards exemplar 9 pressure limiting valve are opened, gas flowmeter 6 detects flow value and is
Gas flowmeter flow setting value, with the pressure limiting valve opening pressure upper and lower bound of this nominal pressure sensor 7 detection；The present invention
After the pressure limiting valve opening pressure upper and lower bound of assay device is demarcated, inflation two-way electromagnetic valve 8 is closed, aerofluxus two-way electromagnetic valve 10
Opening, in assay device, air passes through aerofluxus two-way electromagnetic valve 10, deafener 11 noise-reducing exhaust；When pressure transducer 7 detection
When air pressure value is less than initial pressure value, aerofluxus two-way electromagnetic valve 10 is closed；Bleed pressure is regulated to just by proportional pressure-reducing valve 3
Beginning force value, demarcates complete, takes off master body 9 from test station.
Second step, detection pressure limiting valve opening pressure:
Before test, aerofluxus two-way electromagnetic valve 10, inflation two-way electromagnetic valve 8 are closed；Proportional pressure-reducing valve 3 is by the sky through pressure regulator valve 2
Atmospheric pressure stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit
0.05MPa；When starting to test, inflation two-way electromagnetic valve 8 is opened, and source of the gas 1 persistently pumps into air；Air through pressure regulator valve 2 leads to
Cross proportional pressure-reducing valve 3 by a constant-speed ratio precise pressure regulation, proportional pressure-reducing valve 3 air exported is through the supercharger 4 of four times of pressure ratios
Supercharging is continued to gas tank 5；Air through gas tank 5, gas flowmeter 6, pressure transducer 7, inflation two-way electromagnetic valve 8 to test
Workpiece pressure limiting valve 12 is inflated；Gas flowmeter 6 detects air mass flow；Setting is reached when gas flowmeter 6 detects air mass flow
During flow value, the air pressure value of pressure transducer 7 detection is pressure limiting valve opening pressure value.
3rd step, aerofluxus is initial with recovery:
Inflation two-way electromagnetic valve 8 is closed, and aerofluxus two-way electromagnetic valve 10 is opened, and in assay device, air passes through aerofluxus two-way electromagnetic valve
10, deafener 11 noise-reducing exhaust；When the air pressure value of pressure transducer 7 detection is less than initial pressure value, aerofluxus two is energized
Magnet valve 10 is closed；Air pressure is accurately regulated to restoring initial pressure value by proportional pressure-reducing valve 3, in case test next time；Guarantee examination
Test repeatability precision.
Second embodiment of the invention as it is shown in figure 1, pressure limiting valve opening pressure dry testing device automatic-sealed with test work
The lubricating oil pump high pressure chest that part pressure limiting valve 12 communicates, utilizes supercharger to act on pressure limiting to high-pressure chamber plenum, pressure-air
On valve plunger or steel ball, when high-pressure air pressure is more than test piece pressure limiting valve 12 initial tension of spring, test piece pressure limiting valve
Plunger or the steel ball of 12 are gradually opened；Pressure-air loses heart from test piece pressure limiting valve 12, now gas flowmeter 6 detected gas
When flow reaches the flow indicator arranged, pressure transducer 7 gathers now air pressure value and is pressure limiting valve opening pressure.This side
Method is easy to detect accurately, repeatable accuracy is the highest.
Claims (8)
1. a dry testing method for pressure limiting valve opening pressure, it is characterised in that: including:
The first step, detection pressure limiting valve opening pressure:
Before test, aerofluxus two-way electromagnetic valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve is by the gas test through pressure regulator valve
Pressure medium stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit；Examination
Test workpiece pressure limiting valve to be tightly connected with inflation two-way electromagnetic valve pipeline；When starting to test, inflation two-way electromagnetic valve is opened, and source of the gas is held
Continue and pump into gas test medium；A constant-speed ratio precise pressure regulation pressed by gas test medium passing ratio air relief valve through pressure regulator valve；
The intensified device of gas test medium exported by proportional pressure-reducing valve continues supercharging to gas tank；Gas test medium through gas tank,
Gas flowmeter, pressure transducer, inflation two-way electromagnetic valve are inflated to test piece pressure limiting valve；Gas flowmeter detected gas is tried
Test rate-of flow；When gas flowmeter detected gas test(ing) medium flow reaches the flow value set, pressure transducer detection
Gas test pressure medium value is pressure limiting valve opening pressure value；
Second step, aerofluxus is initial with recovery:
Inflation two-way electromagnetic valve is closed, and aerofluxus two-way electromagnetic valve is opened, and in assay device, gas test medium passes through aerofluxus two-way
Solenoid valve vents；When the gas test pressure medium value of pressure transducer detection is less than initial pressure value, aerofluxus two-way electromagnetism
Valve cuts out；The regulation of gas test pressure medium is restored to initial pressure value by proportional pressure-reducing valve, in case test next time；Guarantee test
Repeatability precision.
A kind of dry testing method for pressure limiting valve opening pressure the most according to claim 1, it is characterised in that: on-test
Before, the gas test pressure medium value of proportional pressure-reducing valve regulation is more than or equal to the difference of pressure limiting valve opening pressure lower limit
0.05MPa。
A kind of dry testing method for pressure limiting valve opening pressure the most according to claim 1, it is characterised in that: in test piece
Also include before pressure limiting valve detection that the pressure limiting valve opening pressure limit value that pressure transducer is tested is demarcated；Including:
Before demarcation, aerofluxus two-way electromagnetic valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve is by the gas test through pressure regulator valve
Pressure medium stable regulation is to initial pressure value, it is ensured that source of the gas is stablized in supply, and its value is less than pressure limiting valve opening pressure lower limit；Will
Pressure limiting valve opening pressure master body is tightly connected with inflation two-way electromagnetic valve pipeline；Pressure limiting valve opening pressure with caliberating device
Limit value；
Timing signal, inflation two-way electromagnetic valve unlatching, source of the gas persistently pumps into gas test medium；Gas test through pressure regulator valve is situated between
A constant-speed ratio precise pressure regulation pressed by matter passing ratio air relief valve；The intensified device of gas test medium exported by proportional pressure-reducing valve is to storage
Gas tank continues supercharging；Gas test medium through gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve to standard
Exemplar is inflated；Master body pressure limiting valve is opened, gas flowmeter detection flow when record established standards exemplar pressure limiting valve are opened
Value, and the pressure limiting valve opening pressure limit value of nominal pressure sensor detection；
After demarcation, inflation two-way electromagnetic valve is closed, and aerofluxus two-way electromagnetic valve is opened, and in assay device, gas test medium is by row
Gas two-way electromagnetic valve aerofluxus；When the gas test pressure medium value of pressure transducer detection is less than pressure limiting valve opening pressure lower limit
Time, aerofluxus two-way electromagnetic valve is closed；The regulation of gas test pressure medium is restored to initial pressure value by proportional pressure-reducing valve, demarcates knot
Bundle.
A kind of dry testing method for pressure limiting valve opening pressure the most according to claim 3, it is characterised in that: pressure limiting valve is opened
Pressure criteria exemplar two, including pressure limiting valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar；
Pressure limiting valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar are close with inflation two-way electromagnetic valve respectively
Envelope connects；The pressure limiting valve opening pressure upper and lower bound of nominal pressure sensor detection respectively.
5. a pressure limiting valve opening pressure dry testing device, it is characterised in that: include source of the gas, pressure regulator valve, proportional pressure-reducing valve, increasing
Depressor, gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve, electric control gear；Gas
Source, pressure regulator valve, proportional pressure-reducing valve, supercharger, gas tank, gas flowmeter, pressure transducer, inflation two-way electromagnetic valve are gone here and there successively
Union road connects；Aerofluxus two-way electromagnetic valve is connected on the pipeline between gas tank and gas flowmeter；Electric control gear and gas
Effusion meter, pressure transducer, inflation two-way electromagnetic valve, aerofluxus two-way electromagnetic valve electricly connect；Original state, aerofluxus two-way electromagnetism
Valve, inflation two-way electromagnetic valve are closed；Proportional pressure-reducing valve by the gas test pressure medium stable regulation through pressure regulator valve to initially
Force value, it is ensured that source of the gas is stablized in supply, its value is less than pressure limiting valve opening pressure lower limit 0.05MPa；When starting to test, inflation
Two-way electromagnetic valve is opened, and inflates to pressure limiting valve；When gas flowmeter detected gas flow reaches the flow value set, automatically controlled dress
Put the gas test pressure medium value controlled in pressure transducer signal piping；Meanwhile, inflation two-way electromagnetic valve is closed, aerofluxus two
Three-way electromagnetic valve is opened；The aerofluxus two-way electromagnetism when the gas test pressure medium value of pressure transducer detection is less than initial pressure value
Valve cuts out, and bleed pressure is regulated to initial pressure value by proportional pressure-reducing valve.
A kind of pressure limiting valve opening pressure dry testing device the most according to claim 5；It is characterized in that: supercharger inputs
With output pressure ratio more than or equal to 1:4.
A kind of pressure limiting valve opening pressure dry testing device the most according to claim 5；It is characterized in that: also include noise reduction
Device；Deafener is connected with aerofluxus two-way electromagnetic valve pipeline.
A kind of pressure limiting valve opening pressure dry testing device the most according to claim 5；It is characterized in that: also include standard
Exemplar；Master body two, including pressure limiting valve opening pressure upper limit master body and pressure limiting valve opening pressure lower limit standard exemplar,
Master body is demarcated by oil formula testing stand.
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| CN201610543516.XA CN106226045B (en) | 2016-07-12 | 2016-07-12 | A kind of dry testing method for pressure limiting valve opening pressure and device |
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| CN201610543516.XA CN106226045B (en) | 2016-07-12 | 2016-07-12 | A kind of dry testing method for pressure limiting valve opening pressure and device |
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| CN106226045B CN106226045B (en) | 2018-10-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727329A (en) * | 2017-09-08 | 2018-02-23 | 南京沪江复合材料股份有限公司 | A kind of packaging bag one-way exhaust valve method of testing and tester |
| CN109976398A (en) * | 2017-12-28 | 2019-07-05 | 核动力运行研究所 | A kind of underwater radiological survey X air bag automatic inflatable/air control system and method |
| CN111594429A (en) * | 2020-05-06 | 2020-08-28 | 杭州沃镭智能科技股份有限公司 | Air medium detection method and detection device of vane type variable displacement oil pump |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55131744A (en) * | 1979-03-30 | 1980-10-13 | Tsuchiya Mfg Co Ltd | Device for examining valve opening characteristic |
| CN1908609A (en) * | 2006-08-23 | 2007-02-07 | 中国第一汽车集团公司 | Dry testing method for pressure limiting valve opening pressure |
| CN202351030U (en) * | 2011-12-01 | 2012-07-25 | 宁波路润冷却器制造有限公司 | Detector for pressure limiting valve |
| CN102720667A (en) * | 2012-06-28 | 2012-10-10 | 湖南机油泵股份有限公司 | Method and device for testing opening pressure of pressure-limiting valve of oil pump |
| CN102788007A (en) * | 2012-08-16 | 2012-11-21 | 富奥汽车零部件股份有限公司 | Dry flow test method and test device |
| CN203732253U (en) * | 2014-01-08 | 2014-07-23 | 珠海格力电器股份有限公司 | Pressure switch detection device |
| CN104697769A (en) * | 2014-12-29 | 2015-06-10 | 宁波圣龙汽车动力系统股份有限公司 | Opening pressure gas measuring device and method for oil pump pressure limiting valve |
| CN204405304U (en) * | 2014-12-27 | 2015-06-17 | 潍柴动力股份有限公司 | Spin-on oil filter performance testing device |
| CN205785801U (en) * | 2016-07-12 | 2016-12-07 | 富奥汽车零部件股份有限公司 | A kind of pressure limiting valve opening pressure dry testing device |
-
2016
- 2016-07-12 CN CN201610543516.XA patent/CN106226045B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55131744A (en) * | 1979-03-30 | 1980-10-13 | Tsuchiya Mfg Co Ltd | Device for examining valve opening characteristic |
| CN1908609A (en) * | 2006-08-23 | 2007-02-07 | 中国第一汽车集团公司 | Dry testing method for pressure limiting valve opening pressure |
| CN202351030U (en) * | 2011-12-01 | 2012-07-25 | 宁波路润冷却器制造有限公司 | Detector for pressure limiting valve |
| CN102720667A (en) * | 2012-06-28 | 2012-10-10 | 湖南机油泵股份有限公司 | Method and device for testing opening pressure of pressure-limiting valve of oil pump |
| CN102788007A (en) * | 2012-08-16 | 2012-11-21 | 富奥汽车零部件股份有限公司 | Dry flow test method and test device |
| CN203732253U (en) * | 2014-01-08 | 2014-07-23 | 珠海格力电器股份有限公司 | Pressure switch detection device |
| CN204405304U (en) * | 2014-12-27 | 2015-06-17 | 潍柴动力股份有限公司 | Spin-on oil filter performance testing device |
| CN104697769A (en) * | 2014-12-29 | 2015-06-10 | 宁波圣龙汽车动力系统股份有限公司 | Opening pressure gas measuring device and method for oil pump pressure limiting valve |
| CN205785801U (en) * | 2016-07-12 | 2016-12-07 | 富奥汽车零部件股份有限公司 | A kind of pressure limiting valve opening pressure dry testing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727329A (en) * | 2017-09-08 | 2018-02-23 | 南京沪江复合材料股份有限公司 | A kind of packaging bag one-way exhaust valve method of testing and tester |
| CN107727329B (en) * | 2017-09-08 | 2024-01-26 | 南京沪江复合材料股份有限公司 | Method and instrument for testing one-way exhaust valve for packaging bag |
| CN109976398A (en) * | 2017-12-28 | 2019-07-05 | 核动力运行研究所 | A kind of underwater radiological survey X air bag automatic inflatable/air control system and method |
| CN111594429A (en) * | 2020-05-06 | 2020-08-28 | 杭州沃镭智能科技股份有限公司 | Air medium detection method and detection device of vane type variable displacement oil pump |
| CN111594429B (en) * | 2020-05-06 | 2022-04-19 | 杭州沃镭智能科技股份有限公司 | Air medium detection method and detection device of vane type variable displacement oil pump |
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| CN106226045B (en) | 2018-10-26 |
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