CN104502131A - Performance testing system for suction filter of speed changing box - Google Patents
Performance testing system for suction filter of speed changing box Download PDFInfo
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- CN104502131A CN104502131A CN201410776874.6A CN201410776874A CN104502131A CN 104502131 A CN104502131 A CN 104502131A CN 201410776874 A CN201410776874 A CN 201410776874A CN 104502131 A CN104502131 A CN 104502131A
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Abstract
The invention relates to the technical field of performance testing of filters, and discloses a performance testing system for a suction filter of a speed changing box. The performance testing system comprises a pollutant injection unit, a testing unit, a temperature control unit and an oil loop which are connected on a testing oil line in series in sequence and form a circulation loop; testing temperature can be kept at a constant value by the temperature control unit so as to test filtration efficiency, and the testing temperature can also be adjusted, and therefore testing on flow pressure drop performance is realized; moreover, a two-position two-way normally open solenoid valve is arranged in the testing unit; a pulse signal is applied to the two-position two-way normally open solenoid valve, so that filtration efficiency testing under pulse flow can be realized; the testing system is high in universality and convenient in use; moreover, the temperature control unit is additionally arranged; compared with a simple heat exchanger in the prior art, the performance testing system is high in temperature adjustment precision and wide in control range, and is capable of realizing the performance testing of the filter within a wider temperature range.
Description
Technical field
The present invention relates to filter capability technical field of measurement and test, be specifically related to a kind of wheel box suction-type filter capability test macro.
Background technology
In automatic gear-box, suction-type filter bits is between oil sump and oil pump, fluid after suction-type metre filter is used for the control of hydraulic system and the lubrication etc. of tooth axle system in automatic gear-box, if the fluid after filtering can not meet the requirement of hydraulic system to oil cleanliness, will accelerating gear and bearing wearing and tearing or cause solenoid valve clamping stagnation, thus affect the life-span of wheel box and normally work.In order to ensure that suction-type filtrator can the work of stability and high efficiency in wheel box, verification experimental verification must be carried out to the performance index of the suction-type filtrator of design.
The test of suction-type filter capability mainly comprises filtration efficiency test and the test of flow pressure drop characteristic, test due to filtration efficiency carries out within specified temperatures, the test of flow pressure drop characteristic then needs the test carrying out different temperatures and different flow, and therefore the test of two performance parameters is different to the requirement of test macro.
As shown in Figure 1, be the schematic diagram of filtration efficiency test macro in prior art.In figure, left side is pollutant injection unit, right side is test cell, fuel tank 1-1 is used for storage arrangements test fluid, sample valve 1-2 is used for the detection to fluid to be measured, oil pump 1-3 and variable valve 1-4 can regulate the flow of fluid in system, flowmeter 1-5 is used for the display of fluid flow in system, system filters 1-6 carries out coarse filtration to the fluid in system, prevent there is the work of larger particles influential system, temperature sensor 1-7 is provided with in fuel tank 1-1, detect oil liquid temperature, heat exchanger 1-8 is used for the heat of system generation and the exchange of chilled water, keep oil liquid temperature at test value, suction-type filtrator 1-9 is filtrator to be measured, particle collector system 1-10 is for detecting the distribution of particles situation before and after filtrator to be measured in fluid, when the pressure difference value of pressure drop indicator 1-11 reaches specified value, test terminates, the numerical value of process particle collector system 1-10 record, can obtain filtration efficiency.
In addition; filtration efficiency is tested; due to the switching etc. of valve in the course of work of reality; flow pulsation can be caused; larger impact is had on filtration efficiency; therefore often also need to carry out the filtration efficiency test under pulse flow; therefore have to carry out repacking debugging to above-mentioned filtration efficiency test macro; as shown in Figure 2; need to increase solenoid electric valve 1-12 and throttling valve 1-13 in former filtration efficiency test macro; in test process, pulse signal is applied to solenoid electric valve 1-12, to complete the filtration efficiency test under horizontal pulse flow.
As shown in Figure 3, be the schematic diagram of flow pressure drop characteristic test macro in prior art.This system comprise fuel tank 2-1, oil pump 2-2, for adjust flux variable valve 2-3, for filter impurity in test environment air strainer 2-4, for fluid in filtering system is carried out coarse filtration system filters 2-5, flowmeter 2-6, for thermoregulator heat exchanger 2-7 and temperature sensor 2-11, the first pressure gauge 2-9 and the second pressure gauge 2-10 is connected to the two ends of filtrator 2-8 to be measured.During measurement, first carry out temperature adjustment by heat exchanger 2-7, after the temperature that temperature sensor 2-1 shows reaches probe temperature, regulate fluid flow by variable valve 2-3, start from scratch to maximal value, continuously record two manometric pressure differentials; Then change probe temperature, repeat aforesaid operations, until obtain the drooping characteristic under different temperatures and different flow.
From the above, in prior art, the test of each performance parameter adopts independently test macro respectively, the versatility of each test macro is lower, ease of use is poor, and in addition, the operating temperature range of automatic gear-box is about-40 DEG C ~ 140 DEG C, and the adjustment temperature device in existing system is simple heat exchanger, it carries out heat interchange for directly adopting the fluid in chilled water and test macro, and temperature regulating range is limited, cannot realize the performance test at temperature on a large scale.
Therefore, those skilled in the art need to improve wheel box suction-type filter capability test macro, to solve the problems referred to above existed in existing test macro.
Summary of the invention
The object of the present invention is to provide a kind of wheel box suction-type filter capability test macro, its highly versatile, easy to use, and facilitate control and the adjustment of temperature in test.
To achieve these goals, the invention provides following technical scheme:
A kind of wheel box suction-type filter capability test macro, is included in and test oil circuit connects successively and forms the pollutant injection unit of closed circuit, test cell, temperature control unit and fluid loop, wherein:
Described pollutant injection unit comprises the first fuel tank, hydraulic pump, flowrate control valve, throttling valve, the first system filtrator and the oil liquid detection device of being connected successively by oil pipe;
Described test cell comprises the second fuel tank, first flow control device, the first solenoid valve, the first particle collector, the first pressure gauge, filtrator to be measured, the second pressure gauge, the second particle collector and the flowmeter of connecting successively; And the end oil pipe of described pollutant injection unit is communicated with described second fuel tank, is provided with temperature sensor in described second fuel tank; Described first solenoid valve is 2/2-way normally open solenoid valve;
Described temperature control unit, for receiving and being controlled by the temperature signal of described temperature sensor feedback, it comprises the circulation waterway formed by water pipe, described circulation waterway is in series with water tank successively, second amount control device, second solenoid valve, described second solenoid valve is two-bit triplet solenoid valve, and its first outlet refrigerating plant, second outlet heating arrangement, the other end of described refrigerating plant is communicated with the first entrance of the 3rd solenoid valve, the other end of described heating arrangement is communicated with the second entrance of described 3rd solenoid valve, the outlet of described 3rd solenoid valve is communicated with the heat exchanger on circulation waterway, and described heat exchanger is also positioned on described test oil circuit simultaneously,
Described fluid loop is provided with second system filtrator.
Preferably, the oil liquid detection device in described pollutant injection unit is particle collector.
Preferably, in described fluid loop, be also provided with the retaining valve in parallel with described second system filtrator, and the direction that described retaining valve is opened is identical with fluid flow direction in test oil circuit.
Preferably, described first flow control device and described second amount control device are variable flow pump.
Preferably, the end of the oil pipe of described pollutant injection unit is connected with the first fan diffuser, and described first fan diffuser is arranged in described second fuel tank.
Preferably, the end of the oil circuit in described fluid loop is connected with the second fan diffuser, and described second fan diffuser is arranged in described first fuel tank.
Preferably, described first solenoid valve, the second solenoid valve and the 3rd solenoid valve are proportioning valve.
The wheel box suction-type filter capability test macro that the present invention proposes, be included in and test oil circuit connect successively and forms the pollutant injection unit of closed circuit, test cell, temperature control unit and fluid loop, wherein be provided with the first system filtrator and oil liquid detection device in pollutant injection unit, for the detection of the coarse filtration of fluid and the oil quality of outfit, to ensure to obtain the fluid meeting test mass; This test macro adds temperature control unit, for in test process to the regulation and control of probe temperature, cardinal principle is the value of feedback according to temperature sensor in test cell, controls the action of two two-bit triplet solenoid valves, refrigerating plant, heating arrangement, realizes the adjustment of various temperature; In test cell, be provided with flow regulator, be also equipped with particle collector and pressure gauge at the two ends of filtrator to be measured, under the cooperation of temperature control unit, the test of filtration efficiency and flow pressure drop characteristic two indexs can be completed; In addition, in test cell, be in series with one or two two usual open electromagnetic valve, electronic pulse signal is applied to it, the test of filtration efficiency under pulse flow can be realized; Fluid is provided with system filters in loop, for the oil filtrating after testing, realizes oil circulation and utilizes.This system can be respectively used to the test of wheel box suction-type filtrator multinomial performance index, and versatility is good, easy to use; And increase temperature control unit, and adopt compared with simple heat exchanger in prior art, thermoregulator scope and degree of regulation can be increased, realize the temperature test on a large scale.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, being briefly described to the accompanying drawing used required in embodiment below, and will being described in further detail specific embodiments of the invention by reference to the accompanying drawings, wherein:
Fig. 1 is the system diagram of wheel box suction-type metre filter efficiency test in prior art;
Fig. 2 is the system diagram of filtration efficiency test under wheel box suction-type filter impulse flow in prior art;
Fig. 3 is the system diagram of wheel box suction-type filter's flow pressuredrop characteristic test in prior art;
Fig. 4 is schematic diagram under wheel box suction-type filter capability test macro intensification operating mode provided by the invention;
Fig. 5 is schematic diagram under wheel box suction-type filter capability test macro provided by the invention cooling operating mode.
Description of reference numerals in above-mentioned figure is as follows:
1-1-fuel tank, 1-2-sample valve, 1-3 oil pump, 1-4-variable valve, 1-5-flowmeter, 1-6-system filters, 1-7 temperature sensor, 1-8-heat exchanger, 1-9-suction-type filtrator, 1-10-particle collector, 1-11 pressure drop indicator, 1-12-solenoid electric valve, 1-13-throttling valve;
2-1-fuel tank, 2-2-oil pump, 2-3-variable valve, 2-4-air strainer, 2-5-system filters, 2-6-flowmeter, 2-7-heat exchanger, 2-8-filtrator to be measured, 2-9-first pressure gauge, 2-10-second pressure gauge, 2-11-temperature sensor;
A-pollutant injection unit, b-test cell, c-temperature control unit, d-fluid loop;
1-first fuel tank, 2-hydraulic pump, 3-flowrate control valve, 4-throttling valve, 5-the first system filtrator, 6-oil liquid detection device, 7-second fuel tank, 8-first flow control device, 9-first solenoid valve, 10-first particle collector, 11-first pressure gauge, 12-filtrator to be measured, 13-second pressure gauge, 14-second particle collector, 15-flowmeter, 16-temperature sensor, 17-water tank, 18-second amount control device, 19-second solenoid valve, 20-refrigerating plant, 21-heating arrangement, 22-the 3rd solenoid valve, 23-heat exchanger, 24-second system filtrator, 25-retaining valve, 26-first fan diffuser, 27-second fan diffuser.
Embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, do to introduce in detail further to this programme below in conjunction with specific embodiment.
As shown in Figure 4 and Figure 5, wheel box suction-type filter capability test macro provided by the invention, is included in and test oil circuit connects successively and forms pollutant injection unit a, test cell b, the temperature control unit c and fluid loop d of closed circuit.
Described pollutant injection unit a, for the fluid to be measured of configuration standard, comprises the first fuel tank 1, hydraulic pump 2, flowrate control valve 3, throttling valve 4, the first system filtrator 5 and the oil liquid detection device 6 of connecting successively.
Wherein, the loop fuel feeding that described hydraulic pump 2 is system provides power, described flowrate control valve 3 regulable control oil circuit flow, described throttling valve 4 is for preventing excessive flow pulse on the impact of the first system filtrator 5, described the first system filtrator 5 can carry out coarse filtration to fluid, prevents larger particles influential system test result.
Described oil liquid detection device 6, for detecting the cleanliness grade of the fluid entering test cell, detects the fluid entering test cell and whether meets examination criteria, prevents that fluid is not up to standard causes test error.Described oil liquid detection device 6 can be sample valve, take out fluid sample and test outside system, and described oil liquid detection device 6 is preferably particle collector in the present system, can directly monitor and know the quality of fluid to be measured, convenient and reliable.
Fluid to be measured enters test cell b via the end pipeline of described pollutant injection unit a, in order to ensure that fluid enters in second fuel tank 7 of described test cell b stably, in this enforcement, the end of the oil pipe of described pollutant injection unit a also can be connected with the first fan diffuser 26, and described first fan diffuser 26 is arranged in described second fuel tank 7.
Described test cell b also comprises first flow control device 8, first solenoid valve 9, first particle collector 10, first pressure gauge 11, filtrator to be measured 12, second pressure gauge 13, second particle collector 14 and the flowmeter 15 of connecting successively.
Wherein, described first flow control device 8 preferred variable flow pump, by regulating the centre distance etc. of motor speed and the oil pump be connected with this variable flow pump, namely the regulable control to test macro flow can be realized, and whether meet the demands according to the flow that the numerical value of flowmeter 15 carrys out certainty annuity, make system architecture simple, easy to operate.Understandably, described first flow control device 8 also can be flow control valve.
Be positioned at first particle collector 10 and second particle collector 14 at described filtrator to be measured 12 two ends, be respectively used to the particle size distribution detecting filtrator 12 upstream and downstream to be measured.
Described first pressure gauge 11 and the difference of described second pressure gauge 13 are the pressure differential of filtrator 12 to be measured, can be used for carrying out flow pressure falls performance test to two pressure gauges on the one hand, on the other hand, when two manometric force value reach ratings, test terminates, and has indicative function to the test process of indices.
Described first solenoid valve 9 is 2/2-way normally open solenoid valve, and when carrying out filtration efficiency test, it is in normally open; When needs pulse flow, by the electromagnetic pulse signal giving this first solenoid valve 9 certain, make this first solenoid valve 9 constantly switch to produce pulse flow, thus the measurement of filtration efficiency under realizing pulse flow.Further, described first solenoid valve 9 when being switched to closed condition, by selecting suitable spring to make solenoid valve not exclusively close, to ensure the unimpeded of oil circuit in system.
In addition, in described second fuel tank 7, be also provided with temperature sensor 16, for detecting the temperature in oil circuit, and to temperature control system c feedback temperature signal, to regulate probe temperature.
Described temperature control unit c comprises the circulation waterway formed by water pipe, described circulation waterway is in series with water tank 17 successively, second amount control device 18, second solenoid valve 19, described second solenoid valve 19 is two-bit triplet solenoid valve, and its first outlet refrigerating plant 20, second outlet adds hot charging 21, the other end of described refrigerating plant 20 is communicated with the first entrance of the 3rd solenoid valve 22, the other end of described heating arrangement 21 is communicated with the second entrance of described 3rd solenoid valve 22, the described outlet of the 3rd solenoid valve 22 is communicated with the heat exchanger 23 on circulation waterway, and described heat exchanger is also positioned on described test oil circuit simultaneously, wherein, described second amount control device 18 is preferably variable flow pump.
The principle of work of described temperature control unit c is as follows:
With reference to Fig. 4, when the temperature of oil liquid temperature actual in test macro higher than testing setup, temperature control unit is needed to carry out cooling process to test macro, the high temperature signal of temperature sensor 16 feeds back to the second solenoid valve 19, refrigerating plant 20 and the 3rd solenoid valve 22, water in water tank 17 arrives the second solenoid valve 19 through second amount control device 18, water flows into through the entrance of the second solenoid valve 19, flow out from its first outlet, flow in refrigerating plant 20, water through refrigerating plant 20 flows into from the first entrance of the 3rd solenoid valve 22, flow out from its outlet, arrive heat exchanger 23, through the cooling continued, the oil liquid temperature in system is made to reach testing setup temperature value.
With reference to Fig. 5, when oil liquid temperature actual in test macro is lower than testing setup temperature, temperature control system is needed to heat up to test macro, the signal feedback that temperature is lower gives the second solenoid valve 19, heating arrangement 21 and the 3rd solenoid valve 22, water in water tank 17 arrives the second solenoid valve 19 through second amount control device 18, water flows into through the entrance of the second solenoid valve 19, flow out from its second outlet, flow in heating arrangement 21, water after heating arrangement 21 heats flows into from the second entrance of the 3rd solenoid valve 22, flow out from its outlet, arrive heat exchanger 23, through the exchange heat continued, the oil liquid temperature in system is made to reach the temperature of setting.
The setting of described temperature control unit c, with adopt compared with simple heat exchanger in prior art, can temperature control accurately, also can regulate probe temperature in a wider context, to obtain in the test result compared with the property indices in large-temperature range in raising system.
Described fluid loop d is provided with second system filtrator 24, for the larger impurity in filtration circuit, realizes reusing of fluid.
Further, in described fluid loop d, be also provided with the retaining valve 25 in parallel with described second system filtrator 24, and the direction that described retaining valve 25 is opened is identical with fluid flow direction in test oil circuit; Described retaining valve 25 is for the protection of system circuit, and when the pressure reduction of second system filtrator 24 both sides is larger, described retaining valve 25 is opened, and ensures the normal circulation of fluid.
Return in injection first fuel tank 1 in order to what make fluid even, the end of the oil circuit of described fluid loop d also can be connected with the second fan diffuser 27, and described second fan diffuser 27 is arranged in described first fuel tank 1.
In the said system of the present embodiment, described first solenoid valve 9, second solenoid valve 19 and the 3rd solenoid valve 22 are all preferably proportioning valve, namely the handoff procedure of the on off state of solenoid valve is continuous print, is gradual change, instead of completes the switching of valve instantaneously by the fluid of valve port or the flow of water.
This wheel box suction-type filter capability test macro that the embodiment of the present invention provides, can be respectively used to the test of filtration efficiency and flow pressure degradation performance index under filtration efficiency, pulse flow, improve versatility and the ease of use of test macro.
This test macro is used to carry out the test operating procedure of property indices as follows:
One. the test of suction-type metre filter efficiency
Air in S1 discharge system: primer fluid press pump 2, makes to be full of fluid in the loop of injected system, when storing a certain amount of fluid in the second fuel tank 7, starting first flow control device 8, making fluid be full of loop, discharge the air in test macro;
S2 regulating system temperature: the temperature signal fed back according to temperature sensor 16, if feedback temperature value is lower than test request temperature, then temperature control unit c is in heating mode, carries out intensification action as shown in Figure 4; Otherwise the cooling action then carried out as shown in Figure 5, temperature control unit c carries out the control of temperature according to the Real-time Feedback signal of temperature sensor 16, until reach the temperature meeting test request;
S3 adjust flux: when having fluid to flow out continuously from the second fan diffuser 27, illustrate in test macro and be full of fluid, now by adjust flux operation valve 3 and first flow control device 8, according to the numerical value of flowmeter 15, make the fluid amount in the second fuel tank 7 keep constant, and make flow value reach test request;
S4 injects pollutant, regulate the cleanliness of Injection Testing fluid: with reference to the particle that GB/T18853 is used, be injected in the first fuel tank 1 as requested, oil cleanliness oil liquid detection device 6 being detected by the pollutant and fluid amount controlling injection reaches test request;
S5 carries out testing and record: during test, the first solenoid valve 9 is in opening all the time, ensure the unimpeded of oil circuit, first particle collector 10 and the second particle collector 14 work, and record the numerical value of the first pressure gauge 11 and the second pressure gauge 13, when pressure reduction reaches the limiting pressure drop value 80% of filtrator 12 to be measured, stop test;
S6 data processing: according to the particle size distribution result of the downstream fluid that particle size distribution result in the upstream fluid that the first particle collector 10 records and the second particle collector 14 record, the particle filtration efficiency under a certain specific dimensions can be obtained; According to the distribution of particles result of the different size that the second particle collector 14 records, the cleanliness of fluid after filtering can be drawn; The total amount of pollutant retained filtrator 12 filter paper to be measured after test is weighed and can be obtained the dust containing capacity of this suction-type filtrator.
Two. the test of suction-type metre filter efficiency under pulse flow
Wherein the operation steps of S1 ~ S4 test with above-mentioned filtration efficiency in the operation steps of S1 ~ S4 identical, when testing, pulse signal is applied to the first solenoid valve 9, solenoid valve is constantly switched on off state, produce pulse flow, first particle collector 10 and the second particle collector 14 work, and record the numerical value of the first pressure gauge 11 and the second pressure gauge 13, stop test when pressure reduction reaches the limiting pressure drop value 80% of testing filters 14; Then carry out data processing, its step is also identical with above-mentioned S6 data processing step.
Three. the test of suction-type filter's flow pressuredrop characteristic under pulse flow
In suction-type filter test system, the difference of the force value of the second pressure gauge 13 and the force value of the first pressure gauge 11 is the pressure differential of filtrator under measurement condition.The differential pressure characteristics of suction-type filtrator needs to measure the difference of filtrator upstream and downstream under different temperatures and flow, and concrete steps are as follows:
Air in S1 discharge system: primer fluid press pump 2, makes to be full of fluid in the loop of injected system, and when storing a certain amount of fluid in the first fuel tank 7, start first flow control device 8, fluid is full of loop, discharges the air in test macro;
S2 regulating system temperature: the temperature signal fed back according to temperature sensor 16, if feedback temperature value is lower than test request temperature, then temperature control unit c is in heating mode, carries out intensification action as shown in Figure 4; Otherwise the cooling action then carried out as shown in Figure 5, temperature control unit c carries out the control of temperature according to the Real-time Feedback signal of temperature sensor 16, until reach the temperature meeting test request;
S3 carries out the test under the first temperature case: the temperature value maintaining the temperature at setting, by regulating first flow control device 8 to make the flow of test macro reach the maximum functional flow of filtrator 12 to be measured gradually from zero, the numerical value of this process lasts record first pressure gauge 11 and the second pressure gauge 13;
S4 changes temperature case to be tested: reset temperature value, after temperature control unit c regulating system temperature reaches setting, repeats the operation of step S3, and the change of adjust flux also records the lasting change of Pressure Drop in this process;
S5 repeats the operation of step S4, until test falls in the flow pressure completed under all temperature required operating modes;
S6 result treatment: according to the data recorded in process of the test, can draw the flow pressure drop characteristic curve under various temperature case.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet instructions with diagram contain spiritual time, all should in protection scope of the present invention.
Claims (7)
1. a wheel box suction-type filter capability test macro, it is characterized in that, be included in and test oil circuit connect successively and forms pollutant injection unit (a) of closed circuit, test cell (b), temperature control unit (c) and fluid loop (d), wherein:
Described pollutant injection unit (a) comprises the first fuel tank (1), hydraulic pump (2), flowrate control valve (3), throttling valve (4), the first system filtrator (5) and the oil liquid detection device (6) of connecting successively;
Described test cell (b) comprises the second fuel tank (7), first flow control device (8), the first solenoid valve (9), the first particle collector (10), the first pressure gauge (11), filtrator to be measured (12), the second pressure gauge (13), the second particle collector (14) and the flowmeter (15) of connecting successively; And the end oil pipe of described pollutant injection unit (a) is communicated with described second fuel tank (7), is provided with temperature sensor (16) in described second fuel tank (7); Described first solenoid valve (9) is 2/2-way normally open solenoid valve;
Described temperature control unit (c), for receiving and being controlled by the temperature signal that described temperature sensor (16) transmits, it comprises the circulation waterway formed by water pipe, described circulation waterway is in series with successively water tank (17), second amount control device (18), second solenoid valve (19), described second solenoid valve (19) is two-bit triplet solenoid valve, and its first outlet refrigerating plant (20), second outlet heating arrangement (21), the other end of described refrigerating plant (20) is communicated with the first entrance of the 3rd solenoid valve (22), the other end of described heating arrangement (21) is communicated with the second entrance of described 3rd solenoid valve (22), the described outlet of the 3rd solenoid valve (22) is communicated with the heat exchanger (23) on circulation waterway, and described heat exchanger (23) is also positioned on described test oil circuit simultaneously,
Described fluid loop (d) is provided with second system filtrator (24).
2. wheel box suction-type filter capability test macro according to claim 1, is characterized in that, the oil liquid detection device (6) in described pollutant injection unit (a) is particle collector.
3. wheel box suction-type filter capability test macro according to claim 1, it is characterized in that, in described fluid loop (d), be also provided with the retaining valve (25) in parallel with described second system filtrator (24), and the direction that described retaining valve (25) is opened is identical with fluid flow direction in test oil circuit.
4. wheel box suction-type filter capability test macro according to claim 1, is characterized in that, described first flow control device (8) and described second amount control device (18) are variable flow pump.
5. wheel box suction-type filter capability test macro according to claim 1, it is characterized in that, the end of the oil pipe of described pollutant injection unit (a) is connected with the first fan diffuser (26), and described first fan diffuser (26) is arranged in described second fuel tank (7).
6. wheel box suction-type filter capability test macro according to claim 5, it is characterized in that, the end of the oil circuit of described fluid loop (d) is connected with the second fan diffuser (27), and described second fan diffuser (27) is arranged in described first fuel tank (1).
7. wheel box suction-type filter capability test macro according to claim 1, is characterized in that, described first solenoid valve (9), the second solenoid valve (19) and the 3rd solenoid valve (22) are proportioning valve.
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Cited By (6)
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| CN105865824A (en) * | 2016-06-07 | 2016-08-17 | 安徽江淮汽车股份有限公司 | Test tooling for suction filter of gearbox |
| CN109444023A (en) * | 2018-12-24 | 2019-03-08 | 新乡天翼过滤技术检测有限公司 | Water-oil separating efficiency test system |
| CN109444022A (en) * | 2018-12-24 | 2019-03-08 | 新乡天翼过滤技术检测有限公司 | A kind of filter water-oil separating efficiency test system |
| CN109490170A (en) * | 2018-12-12 | 2019-03-19 | 日丰企业（佛山）有限公司 | Filter test system |
| CN110376358A (en) * | 2019-06-24 | 2019-10-25 | 湖北三江航天红峰控制有限公司 | The granularity sync detection device and detection method of vacuum filling |
| CN113432867A (en) * | 2021-07-26 | 2021-09-24 | 安徽江淮汽车集团股份有限公司 | Anti-pollution testing system for electromagnetic valve |
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| CN109444022B (en) * | 2018-12-24 | 2023-12-22 | 新乡天翼过滤技术检测有限公司 | Filter oil-water separation efficiency test system |
| CN109444023B (en) * | 2018-12-24 | 2023-12-22 | 新乡天翼过滤技术检测有限公司 | Oil-water separation efficiency test system |
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