CN203348190U - Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench - Google Patents
Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench Download PDFInfo
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- CN203348190U CN203348190U CN 201320404951 CN201320404951U CN203348190U CN 203348190 U CN203348190 U CN 203348190U CN 201320404951 CN201320404951 CN 201320404951 CN 201320404951 U CN201320404951 U CN 201320404951U CN 203348190 U CN203348190 U CN 203348190U
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Abstract
The utility model discloses a weight-loading constant pressure oil supply device used for an oil pressure control valve performance experiment bench. The weight-loading constant pressure oil supply device comprises an oil storage tank, a piston, a bearing seat, a linear bearing, a preloaded weight and a guide rod, wherein the bearing seat is fixedly installed on an upper end face of the oil storage tank; the linear bearing is installed in the bearing seat and is fixedly connected to the bearing seat; the piston penetrates the through hole of the linear bearing, the through hole of the bearing seat and the through hole of the oil storage tank in order and is installed movably; the upper end of the piston is connected to the lower end of the guide rod; the preloaded weight is arranged on the guide rod in a sleeved manner; an oil drain hole is formed in one side of the lower end of the bearing seat; an oil inlet and an oil outlet are formed in the side faces of the oil storage tank respectively. The weight-loading constant pressure oil supply device used for the oil pressure control valve performance experiment bench realizes oil supply at a constant pressure during the whole oil pressure control valve flow characteristic test process as the piston floats along with the movement of the preloaded weight and the guide rod, can change a target pressure value conveniently through the adjustment of the quantity of the preloaded weight, and avoids undetermined system error caused by dimension conversion in the prior art.
Description
Technical field
The utility model relates to a kind of experimental setup for the pressure control valve Performance Detection, relates in particular to a kind of counterweight for pressure control valve performance test stand and loads the constant pressure oil supply device.
Background technique
The constant pressure oil supply device loaded based on counterweight, 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 extremely important effect to improving automobile fuel ecomomy.When OCV being carried out to 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 prior art mainly contains following several:
1, adopt test oil circuit as shown in Figure 3, mainly by metering pump 16, reduction valve 17, relief valve 18, pressure transducer 14 and flowmeter 13, formed, by reduction valve 17 by 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.Due to the pressure regulation range lower limit of liquid medium reduction valve 17 and relief valve 18 all higher than 200kPa, experiment test need be in the situation that carry out higher than 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 to carry out the mark conversion, by mouth of pipe method of calculating flux, test result is transformed into to electric current under the specified pressure condition-traffic characteristic curve.Yet, due to applying of encouraging along with pressure control valve 15 current scannings, its mouth of pipe coefficient will change, and between different oil pressure control valve 15 individualities, exist processing dispersed, also will introduce the dispersiveness of mouth of pipe coefficient, so this test system will produce uncertain systematic error.
2, adopt test oil circuit as shown in Figure 4, mainly by metering pump 16, relief valve 18, series flow control valve 19, rapid switching valve 25, pressure transducer 14 and flowmeter 13, formed, by regulating rapid switching valve 25, change the bypass flow size, make pressure control valve 15 inlet pressures to be measured reach target charge oil pressure value.Due to when pressure control valve 15 current scanning, its Flow characteristics will change, and transformation range is larger.When rapid switching valve 25 is regulated, need s to carry out feedback control by the actual test pressure value of pressure transducer 14.Adjusting to rapid switching valve 25 is an iterative process of successively approaching.In order to reach the pressure surge that is not more than 3kPa, also need to adopt the PID control strategy.Therefore, the pressure of each test point is regulated time (about 5s) that need to be longer.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, the test time that the test of a pressure control valve 15 need to be longer, detection efficiency is too low, is not suitable for being applied to the routine inspection of pressure control valve 15.
3, adopt test oil circuit as shown in Figure 5, mainly by metering pump 16, relief valve 18, throttle valve 19, Proportional valve 20, pressure transducer 14 and flowmeter 13, formed, by regulating the aperture of Proportional valve 20, make to treat that formation testing pressure control valve 15 inlet pressures reach target charge oil pressure value.Detection system three is that from 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 rapid switching valves 25.Also need to adopt the PID control strategy, the iteration of successively approaching.Exist equally detection efficiency too low, be not suitable for being applied to the routine inspection of pressure control valve 15.
4, adopt velocity of sound venting test system as shown in Figure 6, mainly by pressure regulator valve 21, the first valve 22, the second valve 24 and gas tank 23, formed, close the first valve 22, open the second valve 24, gas pressure and temperature in real-time inspection instrument, 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), gap is little, the gap stochastic shape, 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 larger deviation.
The model utility content
The purpose of this utility model 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 utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises 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 be complementary with described linear bearing external diameter, described linear bearing is installed in described bearing support and is fixedly connected with described bearing support, 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 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 described guide rod, one side of described bearing support lower end is provided with the draining hole, be 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.
The beneficial effects of the utility model are:
For overcoming the shortcoming of conventional art, the utility model 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 fully adaptive, without any need for the external world, intervenes; The quality of pre-installing counterweight by adjustment can change target pressure value easily; Directly obtain the electric current of pressure control valve under the target charge oil pressure-traffic characteristic curve, avoided the uncertain system error that in the conventional art, the dimension conversion is introduced; The omnidistance constant voltage of test process, exempted the pressure adjustment process in the conventional art, improved the detection efficiency of pressure control valve Flow characteristics test, overcomes the too low technical disadvantages of detection efficiency caused because of the pressure adjusting.
The accompanying drawing explanation
Fig. 1 is the structure cross-sectional schematic that counterweight described in the utility model loads the constant pressure oil supply device;
Fig. 2 is the test system structure figure that counterweight described in the utility model loads the constant pressure oil supply device;
Fig. 3 is the first test system structure schematic diagram of prior art described in the utility model;
Fig. 4 is the second test system structure schematic diagram of prior art described in the utility model;
Fig. 5 is the third test system structure schematic diagram of prior art described in the utility model;
Fig. 6 is the 4th kind of test system structure schematic diagram of prior art described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises 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 be complementary with linear bearing 5 external diameters, linear bearing 5 is installed in bearing support 6 and is fixedly connected with bearing support 6, 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 movable the installation, the upper end of piston 2 is connected with the lower end of guide rod, prepackage counterweight 4 is set on guide rod 3, one side of bearing support 6 lower ends is provided with draining hole 7, be 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 metering pump 16 input fuel reserve tanks 1 is 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 higher than draining hole 7 lower limb, draining hole 7 starts draining or strengthens dredge oil amount, and the medium engine oil pressure in fuel reserve tank 1 will descend thereupon.When the medium engine oil pressure in fuel reserve tank 1 is 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 fuel reserve tank 1 will rise thereupon.When the medium engine oil pressure in 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 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 to guide rod 3 to increase target pressure value.Perhaps change the counterweight that quality is less and reduce target pressure value.
As shown in Figure 2: the utility model test system mainly is comprised of metering pump 16, constant pressure oil supply device 11, solenoid valve 12, pressure transducer 14 and flowmeter 13, and metering pump 16 is the constant oil pressure of the interior formation of fuel reserve tank 1 at constant pressure oil supply device 11 to constant pressure oil supply device 11 input test medium machine oil; Open the medium machine oil of solenoid valve 12 to pressure control valve 15 input constant pressures, with the actual pressure obtained of pressure transducer 14 test, detect flow with flowmeter 13, apply current scanning by treating formation testing pressure control valve 15, obtain its electric current-traffic characteristic curve, from curve, extract the feature physical quantity.
Claims (4)
1. the counterweight 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 be complementary with described linear bearing external diameter, described linear bearing is installed in described bearing support and is fixedly connected with described bearing support, 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 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 described guide rod, one side of described bearing support lower end is provided with the draining hole, be 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 |
|---|---|---|---|
| CN 201320404951 CN203348190U (en) | 2013-07-09 | 2013-07-09 | Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320404951 CN203348190U (en) | 2013-07-09 | 2013-07-09 | Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench |
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| Publication Number | Publication Date |
|---|---|
| CN203348190U true CN203348190U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320404951 Withdrawn - After Issue CN203348190U (en) | 2013-07-09 | 2013-07-09 | Weight-loading constant pressure oil supply device used for oil pressure control valve performance experiment bench |
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| Country | Link |
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| CN (1) | CN203348190U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343757A (en) * | 2013-07-09 | 2013-10-09 | 中国工程物理研究院总体工程研究所 | Weight loading constant-pressure oil feeding device used for oil pressure control valve performance test bench |
-
2013
- 2013-07-09 CN CN 201320404951 patent/CN203348190U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343757A (en) * | 2013-07-09 | 2013-10-09 | 中国工程物理研究院总体工程研究所 | Weight loading constant-pressure oil feeding device used for oil pressure control valve performance test bench |
| CN103343757B (en) * | 2013-07-09 | 2015-12-02 | 中国工程物理研究院总体工程研究所 | Counterweight for pressure control valve performance test stand loads constant pressure oil supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20151202 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |