CN102788007B - Dry flow test method and test device - Google Patents
Dry flow test method and test device Download PDFInfo
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- CN102788007B CN102788007B CN201210290748.0A CN201210290748A CN102788007B CN 102788007 B CN102788007 B CN 102788007B CN 201210290748 A CN201210290748 A CN 201210290748A CN 102788007 B CN102788007 B CN 102788007B
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Abstract
The invention discloses a dry flow test method and a test device which includes hydraulic oil test medium and a product master body. The dry flow test method is characterized in that the hydraulic oil test medium does not contact with a test product. The dry flow test method includes the following steps of: 1, inserting the lower end of a transparent tube into the hydraulic oil test medium; 2, sealing and connecting the upper end of the transparent tube with a fluid suction port of the product master body, and calibrating the rising height of the liquid level of the hydraulic oil test medium in the transparent tube when the product master body is under the working conditions of rated rotating speed and rated oil suction time; 3, removing the product master body, and sealing and connecting the upper end of the transparent tube with the fluid suction port the test product, measuring the oil suction time at which the liquid level of the hydraulic oil test medium in the transparent tube rises to the calibrated height when the test product is under the working state of rated rotating speed, and comparing the measured oil suction time with the calibrated oil suction time. If the measured oil suction time is shorter than or equal to the calibrated oil suction time, the test product is qualified. The dry flow test method is simple and accurate, high in repeatability precision, low in cost and short in test period and does not affect the cleanliness of the product.
Description
Technical field
The invention belongs to mechanical engineering technical field, relate to a kind of flow dry testing method and testing apparatus, be specially adapted to the flow factory testings such as oil pump.
Background technique
Traditional oil pump capacity detecting method is used specific hydraulic fluid as test(ing) medium conventionally, under rating test oil temperature, viscosity, rotating speed, test pressure condition, detects the volume flowrate of oil pump by flowmeter.After this kind of test method test, need to drain, product after test is often detained many pilot hydraulic fluid media, product is had to certain pollution, product turbidity test index is difficult for reaching, and test(ing) medium pollutes working position apparatus and production environment, storage, transportation and user assembled use are made troubles; This kind of test method test period is long, and beat is slow, and dielectric dissipation amount is large, and experimentation cost is high.
Summary of the invention
The invention discloses a kind of flow dry testing method and testing apparatus, to solve the rear product stagnant liquid force feed test(ing) medium of test in prior art, pollute working position apparatus and production environment, product turbidity test index is difficult for up to standard, inconvenience stores, transportation and user assembled, the problems such as the test period is long, and dielectric dissipation amount is large, experimentation cost height.
A kind of flow dry testing method of the present invention, its technical solution is as follows: comprise pilot hydraulic fluid medium, one through the qualified product standard exemplar of pilot hydraulic fluid dielectric tests; It is characterized in that: pilot hydraulic fluid medium does not contact with test products;
The first step is initially prepared: get a transparent pipe, the lower end of transparent pipe is inserted in pilot hydraulic fluid medium;
Second step oil absorption height is demarcated: the fluid suction inlet of the upper end of transparent pipe and test products master body is tightly connected; Make test products master body under rated engine speed, the working state of demarcation oil suction time, demarcate the height number that the liquid level of pilot hydraulic fluid medium in transparent pipe rises;
The 3rd step product detects qualification determination: remove test products master body, the fluid suction inlet of the upper end of transparent pipe and test products is tightly connected; Make test products under the working state of rated engine speed, the required oil suction time when liquid level height of mensuration comparison liquid force feed test(ing) medium in transparent pipe rises to calibrated altitude, when the mensuration oil suction time, be less than or equal to the demarcation oil suction time, test products is qualified, otherwise defective.
A kind of flow dry testing of the present invention device, comprises worktable, fuel tank, pilot hydraulic fluid medium, and test products location is clamped and installed on worktable; Fuel tank is arranged on the below of worktable, fuel tank splendid attire pilot hydraulic fluid medium; It is characterized in that: comprise transparent pipe, the first liquid level sensor, the second liquid level sensor, MCU micro-control unit, flexible pipe, conformity testing product standard exemplar; Insert in the pilot hydraulic fluid medium of fuel tank transparent pipe lower end, the first liquid level sensor setting height(from bottom) is equal with the pilot hydraulic fluid medium liquid level in fuel tank, and the second liquid level sensor setting height(from bottom) is equal with the liquid level oil absorption height of conformity testing product standard exemplar within the nominal time; The first liquid level sensor, the second liquid level sensor and MCU micro-control unit electricly connect; Flexible pipe one end is connected to transparent pipe upper end, and the fluid suction inlet of one end and test products is tightly connected; Test products running work, thereby oil suction chamber forms negative pressure pilot hydraulic fluid medium is promoted via transparent pipe, when detecting the initial rising signals of liquid level, the first liquid level sensor starts the clock, when starting liquid level signal to be detected, second liquid level sensor on transparent pipe side stops timing, detect pilot hydraulic fluid medium liquid level and from the first liquid level sensor height, rose to for the second liquid level sensor height required oil suction time in transparent pipe, being less than or equal to the demarcated oil suction time is conformity testing product, otherwise is defective test products.
A kind of flow dry testing of the present invention device, also comprises filler opening sealing cylinder, SEALING FITTING; SEALING FITTING is arranged on filler opening sealing cylinder piston rod end, SEALING FITTING is connected with transparent pipe upper end by flexible pipe, filler opening sealing cylinder drives SEALING FITTING straight line motion, completes in the fluid suction inlet test of SEALING FITTING and test products sealing and contact and test rear depressurization and contact.
A kind of flow dry testing of the present invention device, also comprises clamping rotary cylinder; By clamping, rotary cylinder is fastening to be clamped on worktable test products.
A kind of flow dry testing of the present invention device, also comprises the first solenoid valve, the second solenoid valve, pneumatic triple piece; Pneumatic triple piece, can guarantee the dry and lubricated of source of the gas, the safe and reliable action of protection pneumatic element; The first electromagnetic valve clamps rotary cylinder action, the second electromagnetic valve filler opening sealing cylinder action; When preparation starts to test, the first solenoid valve commutation action, the first solenoid-driven clamps rotary cylinder test products is clamped on worktable; The second solenoid valve commutation action, the second solenoid-driven filler opening sealing cylinder seals the fluid suction inlet of SEALING FITTING and test products; After off-test, the first solenoid valve commutation action, clamps rotary cylinder and unclamps clamping; The second solenoid valve commutation action, filler opening sealing cylinder rollback, the inlet port sealing of unclamping SEALING FITTING and test products, takes off test products test and finishes at this point.
A kind of flow dry testing of the present invention device, also comprises an actuating motor, and actuating motor drives and is connected with test products axle; By actuating motor, driving test products to rotate can guarantee rotating speed accurately and reliably, realize the test of flow dry testing.
Good effect of the present invention is: test method is simple, and easy to detect accurate, repeatability is very high.Cost is extremely low, and the test period is very short, does not affect product turbidity test index, good operational environment, and transportation is convenient, very convenient during especially to user's engine assembly.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation
In figure: 1 worktable, 2 fuel tanks, 3 pilot hydraulic fluid media, 4 transparent pipes, 5 flexible pipes, 6 first liquid level sensors, 7 second liquid level sensors, 8 MCU micro-control units, 9 SEALING FITTING, 10 filler opening sealing cylinders, 11 clamp rotary cylinder, 12 first solenoid valves, 13 second solenoid valves, 14 pneumatic triple pieces, 15 actuating motors, 16 electric machine supports, 17 bearing supports, 18 shift forks, 19 test products.
Embodiment
Below an oil pump capacity dry testing method of the present invention and testing apparatus embodiment; Test products 19 is band drive sprocket oil pump.
As shown in Figure 1: apparatus of the present invention comprise worktable 1, fuel tank 2, pilot hydraulic fluid medium 3, plexiglass transparent pipe 4, flexible pipe 5, the first liquid level sensor 6, the second liquid level sensor 7, MCU micro-control unit 8, SEALING FITTING 9, filler opening sealing cylinder 10, clamp rotary cylinder 11, the first solenoid valve 12, the second solenoid valve 13, pneumatic triple piece 14, actuating motor 15, electric machine support 16, bearing support 17, shift fork 18; Fuel tank 2 is arranged on the below of worktable 1, fuel tank 2 splendid attire pilot hydraulic fluid media 3; The pilot hydraulic fluid medium 3 in fuel tank 2 is inserted in transparent pipe 4 lower ends; The first liquid level sensor 6 setting height(from bottom)s are equal with pilot hydraulic fluid medium 3 liquid levels in fuel tank 2, and the second liquid level sensor 7 setting height(from bottom)s are equal with the liquid level oil absorption height of conformity testing product standard exemplar within the nominal time; The first liquid level sensor 6, the second liquid level sensor 7 electricly connect with MCU micro-control unit 8; SEALING FITTING 9 is arranged on filler opening sealing cylinder 10 piston rod ends; Flexible pipe 5 one end connect transparent pipe 4 upper ends, one end connection sealing joint 9, and flexible pipe 5 is tightly connected by SEALING FITTING 9 and the fluid suction inlet of test products 19.
The first solenoid valve 12 is controlled and is clamped rotary cylinder 11 actions, and by clamping, rotary cylinder 11 is fastening to be clamped on worktable 1 test products 19; The second solenoid valve 13 is controlled 10 actions of filler opening sealing cylinder; Filler opening sealing cylinder 10 drives SEALING FITTING 9 straight line motions, completes in the fluid suction inlet test of SEALING FITTING 9 and test products 19 sealing and contact and test rear depressurization and contact.
Actuating motor 15 drives and is connected with test products 19 axles; By actuating motor 15, drive test products 19 to rotate, realize the test of fluid flow dry testing.
This test method first step device is initially prepared: get a transparent pipe 4, pilot hydraulic fluid medium 3 is inserted in the lower end of transparent pipe 4.Before test, oil pump master body is installed on the position of test station test products 19 and locates, shift fork 18 is arranged on actuating motor 15 live axle front ends, and shift fork 18 contacts with test products 19 oil pump sprocket driving.Pneumatic triple piece 14 is arranged on to working state, and while preparing to start to test, the first solenoid valve 12 commutation actions, clamp rotary cylinder 11 air inlet actions test products 19 are clamped on worktable 1; The second solenoid valve 13 commutation actions subsequently, the 10 ventilation actions of filler opening sealing cylinder seal SEALING FITTING 9 and the filler opening of test products 19.
This test method second step oil absorption height is demarcated: this test method need to be demarcated the height dimension that transparent pipe 4 liquid levels rise with oil pump master body, and oil pump master body is by the qualified oil pump product of minimum flow special and that obtain through oily formula test.The fluid suction inlet of the upper end of transparent pipe 4 and test products 19 master bodies is tightly connected; Make test products 19 master bodies under rated engine speed, demarcation oil suction time service state, demarcate the liquid level lifting height of pilot hydraulic fluid medium in transparent pipe 4 and demarcate numerical value.Start to demarcate the height test that liquid level rises, when actuating motor 15 energisings, the drive sprocket that actuating motor 15 live axles rotarily drive shift fork 18 and oil pump master body by bearing support 17 rotates together, now the revolute pair in oil pump master body is rotated simultaneously, at its oil suction chamber, form negative pressure, by flexible pipe 5 and transparent pipe 4, the pilot hydraulic fluid medium in fuel tank 23 is promoted, now detect and demarcating the height that in the oil suction time, liquid level rises; Then the first liquid level sensor 6 is arranged on the position of liquid level lifting height initial change, the second liquid level sensor 7 is arranged on the final position of liquid level lifting height, and the liquid level lifting height that so far qualified oil pump master body is demarcated is demarcated complete.
The 3rd step product detects qualification determination: remove the flow detection dry testing that test products master body can carry out oil pump, flexible pipe 5 one end are connected to transparent pipe 4 upper ends, the fluid suction inlet of one end and test products 19 is tightly connected, make test products 19 running work under rated engine speed, thereby the oil suction chamber of test products 19 forms negative pressure pilot hydraulic fluid medium 3 is promoted via transparent pipe 4, when detecting the initial rising signals of liquid level, the first liquid level sensor 6 starts the clock, when starting liquid level signal to be detected, second liquid level sensor 7 on transparent pipe 4 sides stops timing, detect pilot hydraulic fluid medium 3 detects liquid level height from the first liquid level sensor 6 and rises to the second liquid level sensor 7 and the required oil suction of the liquid level height time detected and be less than or equal to and demarcate the oil suction time and be conformity testing product in transparent pipe 4, otherwise be defective test products.
After off-test, the first solenoid valve 12 commutation actions, clamp rotary cylinder 11 and unclamp clamping; The second solenoid valve 13 commutation actions, filler opening sealing cylinder 10 rollbacks unclamp the inlet port sealing of SEALING FITTING and test products, take off test products test and finish at this point.
Oil pump rotating speed by actuating motor 15 guarantee, liquid level lifting height demarcates accurate height dimension by scale when mounted by the first liquid level sensor 6, the second liquid level sensor 7, the time difference of the liquid level signal that detected detection time by the first liquid level sensor 6, the second liquid level sensor 7 determines, these three groups data based different oil pump products are specifically determined by testing.
The invention is not restricted to make test products under the working state of rated engine speed, the required oil suction time when liquid level height of mensuration comparison liquid force feed test(ing) medium in transparent pipe rises to calibrated altitude; Make test products under the working state of rated engine speed, measure the liquid level height of comparison liquid force feed test(ing) medium in nominal time transparent pipe and whether surmount calibrated altitude, also fall into protection scope of the present invention.
Claims (6)
1. a flow dry testing method, comprises pilot hydraulic fluid medium, and one through the qualified product standard exemplar of pilot hydraulic fluid dielectric tests; It is characterized in that: pilot hydraulic fluid medium does not contact with test products;
The first step is initially prepared: get a transparent pipe, the lower end of transparent pipe is inserted in pilot hydraulic fluid medium;
Second step oil absorption height is demarcated: the fluid suction inlet of the upper end of transparent pipe and test products master body is tightly connected; Make test products master body under rated engine speed, the working state of demarcation oil suction time, demarcate the height number that the liquid level of pilot hydraulic fluid medium in transparent pipe rises;
The 3rd step product detects qualification determination: remove test products master body, the fluid suction inlet of the upper end of transparent pipe and test products is tightly connected; Make test products under the working state of rated engine speed, the required oil suction time when liquid level height of mensuration comparison liquid force feed test(ing) medium in transparent pipe rises to calibrated altitude, when the mensuration oil suction time, be less than or equal to the demarcation oil suction time, test products is qualified, otherwise defective.
2. a flow dry testing device, comprises worktable, fuel tank, pilot hydraulic fluid medium, and test products location is clamped and installed on worktable; Fuel tank is arranged on the below of worktable, fuel tank splendid attire pilot hydraulic fluid medium; It is characterized in that: also comprise transparent pipe, the first liquid level sensor, the second liquid level sensor, MCU micro-control unit, flexible pipe, conformity testing product standard exemplar; Insert in the pilot hydraulic fluid medium of fuel tank transparent pipe lower end, the first liquid level sensor setting height(from bottom) is equal with the pilot hydraulic fluid medium liquid level in fuel tank, and the second liquid level sensor setting height(from bottom) is equal with the liquid level oil absorption height of conformity testing product standard exemplar within the nominal time; The first liquid level sensor, the second liquid level sensor and MCU micro-control unit electricly connect; Flexible pipe one end is connected to transparent pipe upper end, and the fluid suction inlet of one end and test products is tightly connected.
3. flow dry testing device according to claim 2, is characterized in that: also comprise filler opening sealing cylinder, SEALING FITTING; SEALING FITTING is arranged on filler opening sealing cylinder piston rod end, SEALING FITTING is connected with transparent pipe upper end by flexible pipe, filler opening sealing cylinder drives SEALING FITTING straight line motion, completes in the fluid suction inlet test of SEALING FITTING and test products sealing and contact and test rear depressurization and contact.
4. flow dry testing device according to claim 2, is characterized in that: also comprise clamping rotary cylinder; By clamping, rotary cylinder is fastening to be clamped on worktable test products.
5. flow dry testing device according to claim 2, is characterized in that: also comprise the first solenoid valve, the second solenoid valve, pneumatic triple piece; The first electromagnetic valve clamps rotary cylinder action, the second electromagnetic valve filler opening sealing cylinder action; When preparation starts to test, the first solenoid valve commutation action, the first solenoid-driven clamps rotary cylinder test products is clamped on worktable; The second solenoid valve commutation action, the second solenoid-driven filler opening sealing cylinder seals the fluid suction inlet of SEALING FITTING and test products; After off-test, the first solenoid valve commutation action, clamps rotary cylinder and unclamps clamping; The second solenoid valve commutation action, filler opening sealing cylinder rollback, the inlet port sealing of unclamping SEALING FITTING and test products.
6. flow dry testing device according to claim 2, is characterized in that: also comprise an actuating motor, actuating motor drives and is connected with test products axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210290748.0A CN102788007B (en) | 2012-08-16 | 2012-08-16 | Dry flow test method and test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210290748.0A CN102788007B (en) | 2012-08-16 | 2012-08-16 | Dry flow test method and test device |
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| CN102788007A CN102788007A (en) | 2012-11-21 |
| CN102788007B true CN102788007B (en) | 2014-10-15 |
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| CN201210290748.0A Active CN102788007B (en) | 2012-08-16 | 2012-08-16 | Dry flow test method and test device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106226045B (en) * | 2016-07-12 | 2018-10-26 | 富奥汽车零部件股份有限公司 | A kind of dry testing method for pressure limiting valve opening pressure and device |
| CN110907185B (en) * | 2019-11-16 | 2021-05-04 | 重庆长安汽车股份有限公司 | Engine oil dilution test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03168376A (en) * | 1989-11-29 | 1991-07-22 | Hitachi Ltd | Service data storing device for air compressor |
| KR100218169B1 (en) * | 1996-12-28 | 1999-09-01 | 정몽규 | Oil-pump tester |
| CN1687594A (en) * | 2005-04-30 | 2005-10-26 | 武汉理工大学 | Method and equipment for testing performance of feeding oil of fuel pump in car |
| CN102338074A (en) * | 2010-07-23 | 2012-02-01 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7757562B2 (en) * | 2002-10-28 | 2010-07-20 | Mbh Data Source | Technique and apparatus for detecting and monitoring internal defect conditions of mud pumps |
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2012
- 2012-08-16 CN CN201210290748.0A patent/CN102788007B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03168376A (en) * | 1989-11-29 | 1991-07-22 | Hitachi Ltd | Service data storing device for air compressor |
| KR100218169B1 (en) * | 1996-12-28 | 1999-09-01 | 정몽규 | Oil-pump tester |
| CN1687594A (en) * | 2005-04-30 | 2005-10-26 | 武汉理工大学 | Method and equipment for testing performance of feeding oil of fuel pump in car |
| CN102338074A (en) * | 2010-07-23 | 2012-02-01 | 北京航天动力研究所 | Sealing type test device and method applicable to various types of oil pumps |
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| CN102788007A (en) | 2012-11-21 |
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