CN103343757A - Weight loading constant-pressure oil feeding device used for oil pressure control valve performance test bench - Google Patents
Weight loading constant-pressure oil feeding device used for oil pressure control valve performance test bench Download PDFInfo
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- CN103343757A CN103343757A CN2013102857645A CN201310285764A CN103343757A CN 103343757 A CN103343757 A CN 103343757A CN 2013102857645 A CN2013102857645 A CN 2013102857645A CN 201310285764 A CN201310285764 A CN 201310285764A CN 103343757 A CN103343757 A CN 103343757A
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Abstract
The invention discloses a weight loading constant-pressure oil feeding device used for an oil pressure control valve performance test bench. The weight loading constant-pressure oil feeding device comprises an oil storage tank, a piston, a bearing pedestal, a linear bearing, a preassembled weight and a guide rod. The bearing pedestal is fixedly installed on the upper end face of the oil storage tank, the linear bearing is installed in the bearing pedestal and fixedly connected with the bearing pedestal, the piston penetrates through a through hole of the linear bearing, a through hole of the bearing pedestal and a through hole of the oil storage tank in sequence and is movably installed, the upper end of the piston is connected with the lower end of the guide rod, the preassembled weight is sleeved on the guide rod, an oil drain hole is formed in one side of the lower end of the bearing pedestal, and an oil inlet and an oil outlet are respectively formed in the side faces of the oil storage tank. Through the following float of the piston, the preassembled weight and the guide rod, constant-pressure oil feeding in the whole process of an oil pressure control valve flow characteristic test is achieved, the target pressure value can be changed conveniently through the adjustment of the mass of the preassembled weight, and in the traditional technology, uncertain system errors introduced by dimensional transformation are avoided.
Description
Technical field
The present invention relates to a kind of experimental setup for the pressure control valve Performance Detection, relate in particular to a kind of counterweight for pressure control valve performance test stand and load the constant pressure oil supply device.
Background technique
The constant pressure oil supply device that loads based on counterweight is used for the quality testing of pressure control valve (OCV) product, is the core component that OCV detects stand.As the important component part of intelligent alterable valve timing system, the quality of its performance has important role to improving automobile fuel ecomomy.When OCV being carried out the Flow characteristics detection, require OCV is carried out the even step-length current drives scanning of 0.1A～1.2A, sweep test is no less than 128 points.The omnidistance constant pressure oil supply (automobile engine oil) of range request is crossed in sweep test, and according to the OCV of different model, test pressure is set in the specified pressure point between 50kPa～90kPa, and pressure surge requires to be not more than 3kPa.
Detection system to the pressure control valve product in the prior art mainly contains following several:
Adopt test oil circuit as shown in Figure 3, mainly formed by metering pump 16, reduction valve 17, relief valve 18, pressure transducer 14 and flowmeter 13, by reduction valve 17 with the charge oil pressure coarse adjustment to a little more than target pressure value, further be fine tuning to the target charge oil pressure value of needs with relief valve 18.Because the pressure regulation range lower limit of liquid medium reduction valve 17 and relief valve 18 all is higher than 200kPa, experiment test needs to carry out being higher than under the situation of 200kPa, and the test pressure desired value of pressure control valve 15 to be measured requires the specified pressure point between 50kPa～90kPa, therefore need carry out the mark conversion, namely by the mouth of pipe flow rate calculation method test result is transformed into electric current-traffic characteristic curve under the specified pressure condition.Yet, because along with applying of pressure control valve 15 current scannings excitation, its mouth of pipe coefficient will change, and exist processing dispersed between different oil pressure control valve 15 individualities, also will introduce the dispersiveness of mouth of pipe coefficient, so this test system will produce uncertain systematic error.
Adopt test oil circuit as shown in Figure 4, mainly formed by metering pump 16, relief valve 18, series flow control valve 19, quick switching valve 25, pressure transducer 14 and flowmeter 13, by regulating quick switching valve 25, change the bypass flow size, make pressure control valve 15 inlet pressures to be measured reach target charge oil pressure value.Because when pressure control valve 15 current scannings, its Flow characteristics will change, and transformation range is bigger.When quick switching valve 25 is regulated, need carry out feedback control by the actual test pressure value of pressure transducer 14.Adjusting to quick switching valve 25 is an iterative process of approaching one by one.In order to reach the pressure surge that is not more than 3kPa, also need adopt the PID control strategy.Therefore, the pressure of each test point is regulated needs the long time (about 5s).Yet, the Flow characteristics test request test of pressure control valve 15 is no less than 128 points, and requires 100% one hundred percent inspection, and the test of a pressure control valve 15 needs the long test time, detection efficiency is low excessively, is not suitable for being applied to the routine inspection of pressure control valve 15.
Adopt test oil circuit as shown in Figure 5, mainly formed by metering pump 16, relief valve 18, throttle valve 19, Proportional valve 20, pressure transducer 14 and flowmeter 13, by regulating the aperture of Proportional valve 20, make and treat that formation testing pressure-controlled valve 15 inlet pressures reach target charge oil pressure value.Detection system three is that with the difference of detection system two object of regulating is different, and the controlled plant of detection system three is Proportional valves 20, and the controlled plant of detection system two is quick switching valves 25.Also need to adopt the PID control strategy, the iteration of approaching one by one.Exist detection efficiency low excessively equally, be not suitable for being applied to the routine inspection of pressure control valve 15.
Adopt velocity of sound venting test system as shown in Figure 6, mainly formed by pressure regulator valve 21, first valve 22, second valve 24 and gas tank 23, close first valve 22, open second valve 24, detect gas pressure and temperature in the container in real time, measure deflation time by the container deflation characteristic, calculate equivalent cross-sectional area.Because liquid medium exists viscous resistance and capillary phenomenon, when carrying out the dimension conversion, will produce uncertain systematic error.Simultaneously, near pressure control valve 15 intermediate points (D point), the gap is little, the gap shape is uncertain, for the difference (as prismatic micro gap and hole) of some gap shape, there is not equivalence in the Flow characteristics of gas medium and liquid medium, therefore can produce bigger deviation.
Summary of the invention
Purpose of the present invention provides a kind of counterweight for pressure control valve performance test stand to load the constant pressure oil supply device with regard to being in order to address the above problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes fuel reserve tank, piston, bearing support, linear bearing, prepackage counterweight and guide rod, the upper-end surface of described fuel reserve tank is provided with perforate, described bearing support is fixedly installed in the upper-end surface of described fuel reserve tank, described bearing support center is provided with the through hole that the described perforate with described fuel reserve tank upper-end surface is complementary and the through hole that is complementary with described linear bearing external diameter, described linear bearing is installed in the described bearing support and with described bearing support fixedlys connected, the center of described linear bearing is provided with the through hole that the described perforate with described fuel reserve tank upper-end surface is complementary, described piston passes the through hole of described linear bearing successively, the through hole of described bearing support and the through hole of described fuel reserve tank and movable the installation, the upper end of described piston is connected with the lower end of described guide rod, described prepackage counterweight is set on the described guide rod, one side of described bearing support lower end is provided with the draining hole, is respectively arranged with filler opening and oil outlet on the side of described fuel reserve tank.
Further, the top of described fuel reserve tank also is equipped with cover, and the side of described cover lower end is provided with the perforate for oil extraction; The number in described draining hole is 1 to 5, and the best is 3.
Beneficial effect of the present invention is:
For overcoming the shortcoming of conventional art, the present invention floats together with the servo-actuated of prepackage counterweight, guide rod by piston, has realized the constant pressure fuel feeding in pressure control valve Flow characteristics test overall process.And the adjusting of pressure is adaptive fully, intervenes without any need for the external world; Can change target pressure value easily by the quality of adjusting the prepackage counterweight; Directly obtain the electric current-traffic characteristic curve of pressure control valve under the target charge oil pressure, avoided the uncertain system error that the dimension conversion is introduced in the conventional art; The omnidistance constant voltage of test process has been exempted the pressure adjustment process in the conventional art, has improved the detection efficiency of pressure control valve Flow characteristics test, overcomes the low excessively technical disadvantages of detection efficiency that causes because of the pressure adjusting.
Description of drawings
Fig. 1 is the structure cross-sectional schematic that counterweight of the present invention loads the constant pressure oil supply device;
Fig. 2 is the test system structure figure that counterweight of the present invention loads the constant pressure oil supply device;
Fig. 3 is first kind of test system structure schematic representation of prior art of the present invention;
Fig. 4 is second kind of test system structure schematic representation of prior art of the present invention;
Fig. 5 is the third test system structure schematic representation of prior art of the present invention;
Fig. 6 is the 4th kind of test system structure schematic representation of prior art of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1: the present invention includes fuel reserve tank 1, piston 2, bearing support 6, linear bearing 5, prepackage counterweight 4 and guide rod 3, the upper-end surface of fuel reserve tank 1 is provided with perforate, bearing support 6 is fixedly installed in the upper-end surface of fuel reserve tank 1, bearing support 6 centers are provided with the through hole that the perforate with fuel reserve tank 1 upper-end surface is complementary and the through hole that is complementary with linear bearing 5 external diameters, linear bearing 5 is installed in the bearing support 6 and with bearing support 6 fixedlys connected, the center of linear bearing 5 is provided with the through hole that the perforate with fuel reserve tank 1 upper-end surface is complementary, piston 2 passes the through hole of linear bearing 5 successively, the through hole of the through hole of bearing support 6 and fuel reserve tank 1 and movable the installation, the upper end of piston 2 is connected with the lower end of guide rod, prepackage counterweight 4 is set on the guide rod 3, one side of bearing support 6 lower ends is provided with draining hole 7, is respectively arranged with filler opening 8 and oil outlet 9 on the side of fuel reserve tank 1.The top of fuel reserve tank 1 also is equipped with cover, and the side of cover lower end is provided with the perforate for oil extraction; The number in draining hole 7 is 1 to 5, and the best is 3.
As shown in Figure 1: the working principle that counterweight loads constant pressure oil supply device 11 is: under the guiding of linear bearing 5, piston 2 can slide up and down together with prepackage counterweight 4, guide rod 3.When the medium engine oil pressure in the metering pump 16 input fuel reserve tanks 1 during greater than target pressure value, piston 2 will upwards float together with prepackage counterweight 4, guide rod 3, when floating to piston 2 lower end surfaces and be higher than draining hole 7 lower limbs, draining hole 7 beginning drainings or increasing dredge oil amount, the medium engine oil pressure in the fuel reserve tank 1 will descend thereupon.When the medium engine oil pressure in the fuel reserve tank 1 during less than target pressure value, piston 2 will float downwards together with prepackage counterweight 4, guide rod 3, reduce the dredge oil amount in draining hole 7, and the medium engine oil pressure in the fuel reserve tank 1 will rise thereupon.When the medium engine oil pressure in the fuel reserve tank 1 equals target pressure value, piston 2 will hover in certain special position together with prepackage counterweight 4, guide rod 3, keep the medium engine oil pressure in the fuel reserve tank 1 constant.Because the area of piston 2 lower end surfaces is constant, when needs are regulated target pressure value, additional weight can be inserted in guide rod 3 to increase target pressure value.Perhaps change the less counterweight of quality and reduce target pressure value.
As shown in Figure 2: test system of the present invention mainly is made up of metering pump 16, constant pressure oil supply device 11, solenoid valve 12, pressure transducer 14 and flowmeter 13, and metering pump 16 forms constant oil pressure to constant pressure oil supply device 11 input test medium machine oil in the fuel reserve tank 1 of constant pressure oil supply device 11; Open solenoid valve 12 to the medium machine oil of pressure control valve 15 input constant pressures, with the actual pressure that obtains of pressure transducer 14 tests, detect flow with flowmeter 13, apply current scanning by treating formation testing pressure-controlled valve 15, obtain its electric current-traffic characteristic curve, extract the feature physical quantity from curve.
Claims (4)
1. a counterweight that is used for pressure control valve performance test stand loads the constant pressure oil supply device, it is characterized in that: comprise fuel reserve tank, piston, bearing support, linear bearing, prepackage counterweight and guide rod, the upper-end surface of described fuel reserve tank is provided with perforate, described bearing support is fixedly installed in the upper-end surface of described fuel reserve tank, described bearing support center is provided with the through hole that the described perforate with described fuel reserve tank upper-end surface is complementary and the through hole that is complementary with described linear bearing external diameter, described linear bearing is installed in the described bearing support and with described bearing support fixedlys connected, the center of described linear bearing is provided with the through hole that the described perforate with described fuel reserve tank upper-end surface is complementary, described piston passes the through hole of described linear bearing successively, the through hole of described bearing support and the through hole of described fuel reserve tank and movable the installation, the upper end of described piston is connected with the lower end of described guide rod, described prepackage counterweight is set on the described guide rod, one side of described bearing support lower end is provided with the draining hole, is respectively arranged with filler opening and oil outlet on the side of described fuel reserve tank.
2. the counterweight for pressure control valve performance test stand according to claim 1 loads the constant pressure oil supply device, and it is characterized in that: the top of described fuel reserve tank also is equipped with cover, and the side of described cover lower end is provided with the perforate for oil extraction.
3. the counterweight for pressure control valve performance test stand according to claim 1 loads the constant pressure oil supply device, and it is characterized in that: the number in described draining hole is 1 to 5.
4. the counterweight for pressure control valve performance test stand according to claim 3 loads the constant pressure oil supply device, and it is characterized in that: the number in described draining hole is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285764.5A CN103343757B (en) | 2013-07-09 | 2013-07-09 | Counterweight for pressure control valve performance test stand loads constant pressure oil supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285764.5A CN103343757B (en) | 2013-07-09 | 2013-07-09 | Counterweight for pressure control valve performance test stand loads constant pressure oil supply device |
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| CN103343757A true CN103343757A (en) | 2013-10-09 |
| CN103343757B CN103343757B (en) | 2015-12-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105302169A (en) * | 2014-07-29 | 2016-02-03 | 盛美半导体设备（上海）有限公司 | Flow control method |
| CN105840585A (en) * | 2016-05-24 | 2016-08-10 | 中国工程物理研究院总体工程研究所 | Oil supply hydraulic adjusting device for piston cooling nozzle performance experiment bench |
| CN108802521A (en) * | 2018-05-22 | 2018-11-13 | 昆山丘钛微电子科技有限公司 | module test device and test method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085268A (en) * | 1983-10-17 | 1985-05-14 | Toyobo Co Ltd | Method converting expansion work of gas into its constant pressure work |
| US5236010A (en) * | 1992-05-20 | 1993-08-17 | Gas Research Institute | Weight controlled valve |
| CN2533355Y (en) * | 2002-04-02 | 2003-01-29 | 刘宪武 | Constant pressure opening-and-closing valve |
| CN101109467A (en) * | 2006-07-19 | 2008-01-23 | 杨克庆 | Pressure-limiting stabilizing valve |
| CN201225350Y (en) * | 2008-06-06 | 2009-04-22 | 同济大学 | Hydraulic loading oil way voltage stabilizer |
| CN203348190U (en) * | 2013-07-09 | 2013-12-18 | 中国工程物理研究院总体工程研究所 | Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench |
-
2013
- 2013-07-09 CN CN201310285764.5A patent/CN103343757B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085268A (en) * | 1983-10-17 | 1985-05-14 | Toyobo Co Ltd | Method converting expansion work of gas into its constant pressure work |
| US5236010A (en) * | 1992-05-20 | 1993-08-17 | Gas Research Institute | Weight controlled valve |
| CN2533355Y (en) * | 2002-04-02 | 2003-01-29 | 刘宪武 | Constant pressure opening-and-closing valve |
| CN101109467A (en) * | 2006-07-19 | 2008-01-23 | 杨克庆 | Pressure-limiting stabilizing valve |
| CN201225350Y (en) * | 2008-06-06 | 2009-04-22 | 同济大学 | Hydraulic loading oil way voltage stabilizer |
| CN203348190U (en) * | 2013-07-09 | 2013-12-18 | 中国工程物理研究院总体工程研究所 | Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105302169A (en) * | 2014-07-29 | 2016-02-03 | 盛美半导体设备（上海）有限公司 | Flow control method |
| CN105840585A (en) * | 2016-05-24 | 2016-08-10 | 中国工程物理研究院总体工程研究所 | Oil supply hydraulic adjusting device for piston cooling nozzle performance experiment bench |
| CN108802521A (en) * | 2018-05-22 | 2018-11-13 | 昆山丘钛微电子科技有限公司 | module test device and test method |
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| CN103343757B (en) | 2015-12-02 |
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