CN105334035A - One-way valve performance test system and test method - Google Patents
One-way valve performance test system and test method Download PDFInfo
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- CN105334035A CN105334035A CN201510732202.XA CN201510732202A CN105334035A CN 105334035 A CN105334035 A CN 105334035A CN 201510732202 A CN201510732202 A CN 201510732202A CN 105334035 A CN105334035 A CN 105334035A
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Abstract
The invention discloses a one-way valve performance test system comprising an air source, a one-way valve to be tested, an air intake adjustment unit including an air pressure adjustment mechanism arranged between the air source and the air intake end of the one-way valve to be tested, and an air exhaust detection unit including a pressure detection mechanism arranged at the air exhaust end of the one-way valve to be tested. The invention provides a one-way valve performance test system which is used as special test equipment for testing the opening pressure, missing parts assembly and opening clearance of a one-way valve, is suitable for batch test, has the advantages of low cost and high production efficiency, and can detect the performance parameters of one-way valves in batches in production, ensure the quality stability of products and the precision of products and satisfy mass production of products. Through a test method employing the one-way valve performance test system, the test result is fed back through detailed test data, the test efficiency is improved greatly, and higher production efficiency and product stability are achieved.
Description
Technical field
The present invention relates to a kind of being applied in the retaining valve used in engine.More particularly, the present invention relates to a kind of use retaining valve Performance Test System in the context of an engine and method of testing.
Background technology
Unit valve, it often there will be in process of production, and spring is horizontal, the quality problems of neglected loading spring, dual spring; And it is when being used in stretcher, the hydraulic tappet of engine, usually occur that open gap is too small, open gap is excessive in systems in which, and then cause product assembly failure, cause customer complaint, therefore not only need to detect its quality before retaining valve dispatches from the factory, also need to test its performance parameter, meet industry standard to make it.
And in the prior art, can only be judged by human perception the performance test of retaining valve, retaining valve self oil suction detects, or is tested retaining valve by hydraulic way, but such test mode can only be inspected by random samples, can not ensure to detect every part product; And if adopt oil pressure detection mode to detect each retaining valve, have again that production efficiency is low, equipment oil leakage, a feature that equipment manufacturing cost cost is high.
Summary of the invention
An object of the present invention is to solve at least the problems referred to above and/or defect, and the advantage will illustrated at least is below provided.
A further object of the invention is to provide a kind of retaining valve Performance Test System, it is as the special test equipment for the opening pressure of retaining valve, part neglected loading, open gap test, be applicable to batch testing, have that cost is low, production efficiency is high, can realize aborning to the batch detection that the performance parameter of retaining valve is carried out, ensure the stability of the quality of product, guarantee Product Precision, meet the mass production of product.
A further object of the invention is that it carrys out feedback test result by concrete test data by a kind of method of testing applying retaining valve Performance Test System, improves the efficiency of test significantly, and then obtains better production efficiency and product stability.
In order to realize, according to these objects of the present invention and other advantage, providing a kind of retaining valve Performance Test System, comprising:
Source of the gas;
Retaining valve to be measured;
Air inlet adjustment unit, it comprises the Pneumatic adjusting mechanism between the inlet end being arranged on source of the gas and retaining valve to be measured;
Exhaust detecting unit, it comprises the pressure detection mechanism being arranged on retaining valve exhaust end to be measured.
Preferably, wherein, described source of the gas end is provided with air compressor, and is connected with air compressor with two groups of filtration units to the impurity in pressurized air, moisture removal.
Preferably, wherein, described source of the gas is connected to air inlet adjustment unit by electric Proportion valve after two groups of filtration devices.
Preferably, wherein, described Pneumatic adjusting mechanism is air pressure regulator, is also provided with pressure unit between described air pressure regulator and retaining valve inlet end to be measured.
Preferably, wherein, described pressure detection mechanism is pressure transducer, and described pressure detection mechanism is connected with retaining valve exhaust end to be measured, flow quantity detection mechanism respectively by three-way connection, and described pressure detection mechanism end is set to vacuum sealing.
Preferably, wherein, described flow quantity detection mechanism comprises the minute adjustment valve be connected with three-way connection, and the flow sensor be connected with described minute adjustment valve.
Preferably, wherein, also comprise respectively with described air inlet adjustment unit, be vented the control terminal that detecting unit is connected, described control terminal is provided with a gauge tap.
Preferably, wherein, described retaining valve to be measured is arranged on test table, described test table is provided with a housing, described enclosure interior has the cavity of accommodation retaining valve to be measured, and described cavity one end is communicated with air inlet adjustment unit by an air admission hole, and the other end is communicated with exhaust detecting unit, and described cavity bottom is in air admission hole side, and the position contacted with retaining valve to be measured is provided with a sealing gasket.
Object of the present invention can also be realized the method that retaining valve performance is tested by a kind of retaining valve Performance Test System of applying further, comprises the following steps:
Step one, is in place retaining valve to be measured;
Step 2, controls air inlet adjustment unit by described operating terminal, incrementally in retaining valve to be measured, passes into a detection gas pressure value;
Step 3, reads by described operating terminal the data that exhaust detecting unit obtains, and judges that whether retaining valve to be measured is qualified based on the data read, and obtains the performance parameter data of being correlated with.
Preferably, wherein, before described step one, also need to compress source of the gas, filter, dry, to obtain detecting source of the gas; In described step 2, described operating terminal controls air inlet adjustment unit, to realize detection gas pressure value to be set to from 0KPa, and increases progressively in the mode of slope.
Preferably, wherein, in described step 3, described control terminal is after gauge tap is opened, if described detection gas pressure value size is lower than the scheduled pressure value scope prestored in control terminal, and read corresponding data by exhaust detecting unit, then judge retaining valve neglected loading spring; Described detection gas pressure value is within the scope of described scheduled pressure value else if, and read corresponding data by exhaust detecting unit, then judge that retaining valve is qualified, described detection gas pressure value is higher than described scheduled pressure value scope else if, and by exhaust detecting unit do not read corresponding data, then judge one-way valve spring two-man act or spring stuck.
The present invention at least comprises following beneficial effect: one, due to the air pressure size adjustment mechanism that it is arranged at air inlet adjustment unit, such that the size of air pressure is convenient to be regulated, when air pressure detects, give gas accuracy high, for the work test mode of analog equipment, effective control for product quality.
Its two, its exhaust detecting unit arrange pressure detection mechanism, it can according under different admission pressures, can pressure detection mechanism detect force value, enters to judge, obtain corresponding performance parameter simultaneously to the eligible state of retaining valve, there is detection efficiency high, accuracy of detection high effect.
Its three, the setting of its test table, can realize frock fast and easy and switch, realize multiple detections of different product, detection efficiency detects high than oiliness, is convenient to extensive popularization, the common manufacture level improved in industry.
The present invention's application retaining valve Performance Test System carries out the method for retaining valve performance test, carrys out feedback test result, improves the efficiency of test significantly, and then obtain better production efficiency and product stability by concrete test data.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the structural representation of test table in retaining valve Performance Test System in one embodiment of the present of invention;
Fig. 2 is the connection block diagram of retaining valve Performance Test System in an alternative embodiment of the invention;
Fig. 3 tests for application retaining valve Performance Test System of the present invention, collects curve map;
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to instructions word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Fig. 1-2 shows according to a kind of retaining valve Performance Test System way of realization of the present invention, comprising:
Source of the gas 1, it is for providing the detection medium of retaining valve;
Retaining valve 2 to be measured;
Air inlet adjustment unit 3, it comprises the Pneumatic adjusting mechanism 30 between the inlet end being arranged on source of the gas and retaining valve to be measured, it is for adjusting the pressure size of the gas entering retaining valve to be measured, it incrementally adjusted from 0KPa at test initial stage, to ensure that pressure increases gradually, prevent the excessive infringement to retaining valve device suddenly of its pressure, and then accurately can record the relevant parameter of retaining valve;
Exhaust detecting unit 4, it comprises the pressure detection mechanism 40 being arranged on retaining valve exhaust end to be measured, its for retaining valve based under certain pressure, be arranged on steel ball 20 in retaining valve under pressure, spring 21 in retaining valve is backed down certain gap, and then by exhaust detecting unit, its steel ball is detected by the pressure size backed down, to be detected data accurately.Adopt this scheme, be air because it detects medium, can not environmental pollution be caused, and cost is lower, it adopts admission pressure regulon to adjust the pressure entering retaining valve simultaneously, has degree of accuracy high, and can prevent to the infringement that device and the person cause in testing process, in addition, it adopts the opening pressure of pressure detection mechanism to retaining valve to detect, to be detected data accurately, there is cost controlled, can implementation result good, safety coefficient is high, environmental protection, the favourable part that precision is good.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described source of the gas end is provided with air compressor 10, and to be connected with to the impurity in pressurized air with air compressor, two groups of filtration units 11 of moisture removal, described two groups of filtration units can replace with compressed-air filter, wherein two groups of filtration units one group are for removing dust contained in air, as active carbon filter screen and PM2.5 screen pack or other device that can filter dust, another group is for removing moisture contained in air, it can realize with tabular filtering material, also can realize with dryer, be clean and the source of the gas of drying to make the gas entered in retaining valve, to prevent it to the detection of testing agency in the infringement of retaining valve and influential system etc., measuring accuracy.Adopt this scheme have can implementation result good, reliability is high, the favourable part of good stability.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described source of the gas is connected to air inlet adjustment unit by electric Proportion valve 31 after two groups of filtration devices.Adopt this scheme to be controlled the air break-make entered in retaining valve by electrical equipment proportioning valve, be beneficial to and implement and control.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described Pneumatic adjusting mechanism is air pressure regulator, is also provided with pressure unit 32 between described air pressure regulator and retaining valve inlet end to be measured.Described air pressure regulator is the size that can regulate the air pressure entered in retaining valve according to control signal or personnel control, its role is to the accurate control to air pressure size, pressure unit is the one in pressure transducer, it can show the atmospheric pressure value of actual air inlet, this scheme is adopted to have workable, implement favourable, the favourable part that degree of accuracy is high.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described pressure detection mechanism is pressure transducer, pressure transducer is for obtaining accurate pressure data, described pressure detection mechanism by three-way connection 41 respectively with retaining valve exhaust end to be measured, flow quantity detection mechanism connects, and described pressure detection mechanism end is set to vacuum sealing, it is arranged on vacuum sealing at pressure detection mechanism end, ensure that gas can not leak at pressure detection mechanism end, can all be pooled to flow quantity detection mechanism end, to detect the gas flow of exhaust end, and then obtain open gap size and the opening pressure size of retaining valve, there is dual test, degree of accuracy is higher, the more comprehensive favourable part of performance parameter.Wherein,
Described flow quantity detection mechanism comprises the minute adjustment valve 42 be connected with three-way connection, and the flow sensor 43 be connected with described minute adjustment valve.The size of airshed is controlled by minute adjustment valve, whether the retaining valve of inverse detection is opened, open under what pressure, opening pressure size directly reacts the state of retaining valve, and as one-way valve spring neglected loading, one-way valve spring is horizontal, one-way valve spring two-man act, retaining valve are stuck.Adopt the minute adjustment valve in this scheme to be combined with flow sensor, according to different applicable needs, its flow monitoring scope can be adjusted, to meet the detection of the product to various performance parameter, there is controllability good, adaptable favourable part.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, also comprise respectively with described air inlet adjustment unit, be vented the control terminal (not shown) that detecting unit is connected, described control terminal is provided with a gauge tap (not shown).Described control terminal can be arranged a display screen (not shown), adopt the control terminal in this scheme to realize a key by gauge tap disposed thereon test macro is opened, and can implement to receive and show the effect of testing result, there is intellectuality, workable favourable part.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described retaining valve to be measured is arranged on test table 5, described test table is provided with a housing 50, described enclosure interior has the cavity 51 of accommodation retaining valve to be measured, described cavity one end is communicated with air inlet adjustment unit by an air admission hole 52, the other end is communicated with exhaust detecting unit, and described cavity bottom is in air admission hole side, and the position contacted with retaining valve to be measured is provided with a sealing gasket 53.This scheme is adopted to be fixed retaining valve, make it at the retaining valve detecting different model, only need to arrange different frocks, just can adapt to different detection needs, without the need to changing or add other test macro, there is the effect that practicality is good, the effect of sealing gasket is to treat surveys retaining valve and the external world closes, prevent detect gas leakage, have can implementation result good, the favourable part that accommodation is large.Test table fast for bulk article characteristic test, can reduce the input cost of Product checking cost, equipment.Different classes of product, only need make different test fixture, arrange different parameters, reach product quality detection control object, further Improving The Quality of Products level, guarantees that the rate of dispatching from the factory of product reaches 100% qualified.Simultaneously frock fast and easy switches, and realizes multiple detections of different product, detection efficiency than oiliness detect high and, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Object of the present invention can also be realized the method that retaining valve performance is tested by a kind of retaining valve Performance Test System of applying further, comprises the following steps:
Step one, is in place retaining valve to be measured;
Step 2, controls air inlet adjustment unit by described operating terminal, incrementally in retaining valve to be measured, passes into a detection gas pressure value;
Step 3, reads by described operating terminal the data that exhaust detecting unit obtains, and judges that whether retaining valve to be measured is qualified based on the data read, and obtains the performance parameter data of being correlated with.Install electrical equipment proportioning valve and carry out the switching of source of the gas break-make, air pressure regulator regulates (arranging by arranging requirement) pressure, then connects pressure unit, and product termination mass flowmeter of giving vent to anger carries out fluctuations in discharge monitoring to product piston oral area.Namely fluctuations in discharge size judges the opening pressure of retaining valve.Its concrete operations mode is: be manually positioned in frock by workpiece, the gauge tap in start-up operation terminal, workpiece enters test zone, retaining valve is disconnected, and (gas continues to flow the gauge that becomes a mandarin, namely exhaust end closes), air inlet source is through electrical equipment proportioning valve (gas increases progressively from 0), inlet end pressure transducer shows actual air inlet atmospheric pressure value, gas is by after product, gas outlet connects vacuum sealing, when air pressure is lower, product retaining valve is not opened, exhaust port pressure sensor is shown as 0, when air pressure increases to retaining valve opening pressure value, product one-way valve opens, namely outlet flow sensor perceived flux increases instantaneously, therefore judge that retaining valve is opened, control terminal passes through pressure transducer and the flow sensor of exhaust end, obtain the opening pressure size about retaining valve to be measured and open gap size.Adopt this scheme have can implementation result good, the favourable part that testing efficiency, precision are high.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, before described step one, also need to compress source of the gas, filter, dry, to obtain detecting source of the gas; Access clean source of the gas, by two groups of filtration units, moisture in pressurized air and impurity are filtered, meet the requirements to make detecting source of the gas, to ensure accuracy of detection, in described step 2, described operating terminal controls air inlet adjustment unit, to realize detection gas pressure value to be set to from 0KPa, and increase progressively in the mode of slope.Make the convenient adjustment of the size of air pressure, the accuracy that air pressure detects is high, the work test mode of analog equipment, effective control for product quality; Adopt this scheme to have its incremental manner reliable, can implementation result good, the favourable part that accuracy of detection is high.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step 3, described control terminal gauge tap open after, if described detection gas pressure value size is lower than the scheduled pressure value scope prestored in control terminal, and read corresponding data by exhaust detecting unit, then judge retaining valve neglected loading spring, if under very little gas pressure value, exhaust end just can detect corresponding data, as shown in D line in Fig. 3, then prove that product is defective, belongs to the situation of spring funnel, needs to do over again, described detection gas pressure value is within the scope of described scheduled pressure value else if, and read corresponding data by exhaust detecting unit, then judge that retaining valve is qualified, if within a predetermined time, and detect atmospheric pressure size in preset range, then illustrate that product is qualified, as shown in A line in Fig. 3, further can also increase and detect gaseous tension, to detect other performance of product, as maximum gas flow, maximal clearance etc., described detection gas pressure value is higher than described scheduled pressure value scope else if, and do not read corresponding data by exhaust detecting unit, then judge one-way valve spring two-man act or spring stuck, if exceed a schedule time, and detected pressures value also exceeds preset range, if detected pressures end can detect certain pressure, as shown in B line in Fig. 3, then retaining valve is likely two-man act, if a point pressure also can't detect, then Spring Card may be there is in the dust as shown in C line in Fig. 3, then can classify and do over again.Adopt this scheme to judge the defective state of retaining valve, being beneficial to the later stage carries out classification to it and does over again, and have Detection results good, accuracy of detection is high, can the good favourable part of implementation result.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present invention.The application of retaining valve Performance Test System of the present invention, modifications and variations be will be readily apparent to persons skilled in the art.
Although embodiment of the present invention are open as above, it is not restricted to listed in instructions and embodiment utilization.It can be applied to the various field being applicable to this practicality completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, this practicality is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a retaining valve Performance Test System, is characterized in that, comprising:
Source of the gas;
Retaining valve to be measured;
Air inlet adjustment unit, it comprises the Pneumatic adjusting mechanism between the inlet end being arranged on source of the gas and retaining valve to be measured;
Exhaust detecting unit, it comprises the pressure detection mechanism being arranged on retaining valve exhaust end to be measured.
2. retaining valve Performance Test System as claimed in claim 1, it is characterized in that, described source of the gas end is provided with air compressor, and is connected with air compressor with two groups of filtration units to the impurity in pressurized air, moisture removal.
3. retaining valve Performance Test System as claimed in claim 2, it is characterized in that, described source of the gas is connected to air inlet adjustment unit by electric Proportion valve after two groups of filtration devices.
4. retaining valve Performance Test System as claimed in claim 1, it is characterized in that, described Pneumatic adjusting mechanism is air pressure regulator, is also provided with pressure unit between described air pressure regulator and retaining valve inlet end to be measured.
5. retaining valve Performance Test System as claimed in claim 1, it is characterized in that, described pressure detection mechanism is pressure transducer, described pressure detection mechanism is connected with retaining valve exhaust end to be measured, flow quantity detection mechanism respectively by three-way connection, and described pressure detection mechanism end is set to vacuum sealing, wherein
Described flow quantity detection mechanism comprises the minute adjustment valve be connected with three-way connection, and the flow sensor be connected with described minute adjustment valve.
6. retaining valve Performance Test System as claimed in claim 1, is characterized in that, also comprise respectively with described air inlet adjustment unit, be vented the control terminal that detecting unit is connected, described control terminal is provided with a gauge tap.
7. retaining valve Performance Test System as claimed in claim 1, it is characterized in that, described retaining valve to be measured is arranged on test table, described test table is provided with a housing, described enclosure interior has the cavity of accommodation retaining valve to be measured, and described cavity one end is communicated with air inlet adjustment unit by an air admission hole, and the other end is communicated with exhaust detecting unit, and described cavity bottom is in air admission hole side, and the position contacted with retaining valve to be measured is provided with a sealing gasket.
8. apply the method that the retaining valve Performance Test System as described in any one of claim 1-7 is tested retaining valve performance, it is characterized in that, comprise the following steps:
Step one, is in place retaining valve to be measured;
Step 2, controls air inlet adjustment unit by described operating terminal, incrementally in retaining valve to be measured, passes into a detection gas pressure value;
Step 3, reads by described operating terminal the data that exhaust detecting unit obtains, and judges that whether retaining valve to be measured is qualified based on the data read, and obtains the performance parameter data of being correlated with.
9. the method for testing of retaining valve Performance Test System as claimed in claim 8, is characterized in that, before described step one, also needs to compress source of the gas, filters, dry, to obtain detection source of the gas; In described step 2, described operating terminal controls air inlet adjustment unit, to realize described detection gas pressure value to be set to from 0KPa, and increases progressively in the mode of slope.
10. the method for testing of retaining valve Performance Test System as claimed in claim 8, it is characterized in that, in described step 3, described control terminal is after gauge tap is opened, if described detection gas pressure value size is lower than the scheduled pressure value scope prestored in control terminal, and read corresponding data by exhaust detecting unit, then judge retaining valve neglected loading spring; Described detection gas pressure value is within the scope of described scheduled pressure value else if, and read corresponding data by exhaust detecting unit, then judge that retaining valve is qualified, described detection gas pressure value is higher than described scheduled pressure value scope else if, and by exhaust detecting unit do not read corresponding data, then judge one-way valve spring two-man act or spring stuck.
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| CN106197977A (en) * | 2016-07-06 | 2016-12-07 | 公安部天津消防研究所 | Gas extinguishing system high pressure, large-flow check valve action test device and method |
| CN106640618A (en) * | 2016-11-25 | 2017-05-10 | 中国科学院上海技术物理研究所 | Device for independently assessing performance of linear oscillation compressor and assessment method |
| CN107328946A (en) * | 2017-08-18 | 2017-11-07 | 安图实验仪器(郑州)有限公司 | Fluid injection non-return valve retarded capability detecting system |
| 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 |
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| CN106197977B (en) * | 2016-07-06 | 2018-07-13 | 公安部天津消防研究所 | Gas extinguishing system high pressure, large-flow check valve action test device and method |
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| 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 |
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| CN110398353A (en) * | 2019-06-20 | 2019-11-01 | 平湖康弗莱尔汽车发动机***有限公司 | The combined test stand of vehicle turbine breather cheek valve |
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