CN205038045U - Rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop - Google Patents
Rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop Download PDFInfo
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- CN205038045U CN205038045U CN201520818249.3U CN201520818249U CN205038045U CN 205038045 U CN205038045 U CN 205038045U CN 201520818249 U CN201520818249 U CN 201520818249U CN 205038045 U CN205038045 U CN 205038045U
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Abstract
The utility model relates to a rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop, including the consecutive high -pressure nitrogen cylinder that connects, mass flow meter, needle type valve, pipeline, pipe flange and thermometer, parallel connection has low pressure differential pressure sensor on the pipe flange, the pipe flange is connected with the testing component, connects on the testing component to be equipped with the manometer. It can carry out the precision measurement to the pressure drop of the vapor recovery system subassembly of second stage vapor recovery system ystem installation on the fuel -servicing equipment, requires to compare with corresponding subassembly to confirm whether the vapor recovery system subassembly accords with the regulation. Its principle is simple, is convenient for understand and the operation, and the small and exquisite simple to operate of equipment can hinder declining of vapor recovery system equipment and test, has improved the accuracy greatly.
Description
Technical field
The utility model belongs to proving installation technical field, relates to the engine bench test device that a kind of refuelling station secondary oil gas reclaims assembly pressure drop.
Background technology
At present, State Environmental Protection Administration's statistics display, the exhaust of oil of motor vehicle has become one of China's air-polluting main source in recent years, also result in a large amount of wastes of the energy simultaneously.And in the exhaust of oil of motor vehicles, the discharge caused in refueling process account for again sizable proportion.Therefore for the subordinate phase gas recovery system for oil of refueling process research highly significant.In secondary oil gas reclaimer general reference locomotive refueling process, utilize the special device on nozzle, by the oil gas that originally can be spilt into by automotive oil tank in air, be recovered into the device of storage tank through nozzle and vacuum pump.The resistance of nozzle, main oil gas recovery component such as coaxial sebific duct, gas-oil separation X-over etc. not only can cause certain influence to the efficiency of gas recovery system for oil, also potential safety hazard can be brought, for this reason, need a kind of device pressure drop of secondary oil gas recovery assembly being carried out to accurately test, accurately measure with the pressure drop of the oil gas recovery component be arranged on fuel-servicing equipment for subordinate phase gas recovery system for oil, compared with corresponding component calls, thus determine whether oil gas recovery component conforms with the regulations.
Utility model content
The purpose of this utility model is, a kind of refuelling station secondary oil gas is provided to reclaim the engine bench test device of assembly pressure drop, accurately measure with the pressure drop of the oil gas recovery component be arranged on fuel-servicing equipment for subordinate phase gas recovery system for oil, compared with corresponding component calls, thus determine whether oil gas recovery component conforms with the regulations.
For achieving the above object, the utility model provides a kind of refuelling station secondary oil gas to reclaim the engine bench test device of assembly pressure drop, comprises the high-pressure nitrogen bottle, mass flowmeter, needle valve, pipeline, pipe flange and the thermometer that are connected successively; Pipe flange is connected in parallel to low-voltage differential sensor; Pipe flange is connected with test suite, and test suite is connected with tensimeter.
In above scheme preferably, the quantity of pipe flange is two.
Can also preferably, test suite is arranged between two pipe flanges.
Can also preferably, tensimeter is set to digital pressure gauge.
Can also preferably, the quantity of needle valve is two.
Can also preferably, two needle valves are connected in parallel.
Can also preferably, high-pressure nitrogen bottle is provided with pressure governor.
Can also preferably, high-pressure nitrogen bottle is provided with two stage pressure regulator.
Can also preferably, pipeline is set to round steel pipe.
Can also preferably, pipeline is provided with smooth hole.
Refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop, the pressure drop of the oil gas recovery component that can be arranged on fuel-servicing equipment for subordinate phase gas recovery system for oil is accurately measured, compared with corresponding component calls, thus determine whether oil gas recovery component conforms with the regulations.It is tested when flow passage components flow is known, and determines the pressure drop of oil gas recovery component by instrument measurement pressure reduction.By the measurement of mass flowmeter and the adjustment of needle valve, it ensures that flow velocity reaches setting, set up steady testing flow process, use flange to be fixed on testboard bay by test suite, utilize low-voltage differential sensor to measure the pressure drop of test suite, test point is immediately preceding the upstream and downstream of assembly.It can obtain nozzle respectively, the coaxial secondary oil gas such as sebific duct, gas-oil separation X-over reclaims the voltage drop value of assembly under firm discharge.Its principle is simple, is convenient to understand and operation, and equipment is small and exquisite easy for installation, can test, substantially increase accuracy to micro-resistance of oil-gas recovery device.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation that refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop;
Fig. 2 is the manometric structural representation that refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop.
In figure, 1 is high-pressure nitrogen bottle, and 2 is mass flowmeter, and 3 is needle valve, and 4 is pipeline, and 5 is pipe flange, and 6 is low-voltage differential sensor, and 7 is thermometer, and 8 is tensimeter, and 9 is test suite.
Embodiment
In order to understand the utility model better, below in conjunction with specific embodiment, the utility model is explained in detail.But, obviously can carry out different modification and remodeling to the utility model and not exceed the wider spirit and scope of the utility model of appended claims.Therefore, following examples have exemplary and hard-core implication.
Embodiment:
Refuelling station's secondary oil gas reclaims an engine bench test device for assembly pressure drop, as depicted in figs. 1 and 2, comprises the high-pressure nitrogen bottle 1, mass flowmeter 2, needle valve 3, pipeline 4, pipe flange 5 and the thermometer 7 that are connected successively; Pipe flange 5 is connected in parallel to low-voltage differential sensor 6; Pipe flange 5 is connected with test suite 9, test suite 9 is connected with tensimeter 8.The quantity of pipe flange 5 is two.Test suite 9 is arranged between two pipe flanges 5.Tensimeter 8 is set to digital pressure gauge.The quantity of needle valve 3 is two.Two needle valves 3 are connected in parallel.High-pressure nitrogen bottle 1 is provided with pressure governor.High-pressure nitrogen bottle 1 is provided with two stage pressure regulator.Pipeline 4 is set to round steel pipe.Pipeline 4 is provided with smooth hole.
Refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop, and its high-pressure nitrogen bottle 1 provides industrial level nitrogen.Its mass flowmeter 2 can be set to range ability 0.0 ~ 30.0L/min, and precision is 0.3L/min, and resolution is 0.1L/min, and repeatable accuracy is 0.2% of full scale.Its needle valve 3 is set to by regulating needle valve to set up stable flow, makes mass rate reach desired value.It is long that its pipeline 4 is set to two 0.61m, and the steel pipe of 38.1mm diameter, has smooth hole.The connector that its pipe flange 5 is arranged on pipeline 4 tests different test suites 9, and each test suite 9 needs the flange of special setting.Its low-voltage differential sensor 6 is set to range ability 0.0 ~ 63.5Pa, and precision is 0.25% of full scale, and resolution is 0.001.Its thermometer 7 is used for recorded stream dynamic temperature.Its digital pressure gauge is set to range ability 0.0 ~ 5.077kPa, is used for the pressure integrity of check system, carries out leak-testing simultaneously.
Refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop, and its high-pressure nitrogen bottle 1 can arrange lid, also can arrange enclosed construction.Its mass flowmeter 2 can be set to the digital display type structure of band LED display, also can be set to the display structure with index dial.Its thermometer 7 can be set to the digital display type structure of band LED display, also can be set to the graduated display structure of band.Its tensimeter 8 can be set to the digital display type structure of band LED display, also can be set to the graduated display structure of band.
Refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop, and it can also comprise orifice plate.Before test, need guarantee that testing apparatus carried out calibration in last year, open testing apparatus, allow its stable operation 30 minutes, use orifice plate carry out single-point response to testing apparatus and check.Each test suite 9 needs the flange of special setting to be arranged on pipeline 4, and the two ends of pipeline 4 are equipped with pipe flange 5.The probe of two low-voltage differential sensors 6 stretches in the pipeline 4 of test suite 9 upstream and downstream respectively, and mass flowmeter 2 is connected by pipe flange 5 and directly seals in pipeline 4, and test suite 9 upstream arranges needle valve 3, regulates flow velocity.
Refuelling station of the present utility model secondary oil gas reclaims the engine bench test device of assembly pressure drop, all will calibrate mass flowmeter, low-voltage differential sensor testing apparatus every year.Before test, start testing apparatus, make its stable operation 30 minutes.Use orifice plate to carry out single-point response afterwards to check, under the flow of 28.3L/min, orifice plate will obtain a voltage drop value according to own dimensions and test spoolpiece size according to following formulae discovery.When single-point response checks, require that the viewed response of low-voltage differential table must within calculate voltage drop value 3%.
Wherein: the density (nitrogen=1.16kg/m3,20 DEG C) of ρ test fluid; A1 is the cross-sectional area that pipe leads to aperture; A2 is orifice plate rims square cross area; Q is orifice plate inlet flow rate; Cd is orifice flow constant.
After completing above-mentioned work, start to test.
The first step, flow temperature and atmospheric measurement.Move tube section ends lid, adjust needle valve 3 gradually and set up regime flow, until mass flowmeter 2 reading is 28.3L/min, a few second of waiting makes system reach balance, record downstream flow temperature and atmospheric pressure.
Second step, the slope obtained according to mass rate meter calibrating and intercept, calculate the correct mass flowmeter displayed value that 28.3L/min flow velocity is corresponding.
3rd step, sets up stable test stream, sets up regime flow by adjusting needle valve 3 gradually, until mass flowmeter 2 reading is the calculated value in second step.
4th step, the test of stand pressure drop.The pipe flange 5 of the testboard bay of upstream and downstream is coupled together, removes pipeline 4 end cap, after flowing is stable, record low-voltage differential table 6 reading, the i.e. voltage drop value of testboard bay.
5th step, Leak Detection.Block test component fluid path to flow through to prevent nitrogen, utilize sealing adaptor to be connected to by proving installation on the pipe flange 5 of test board, pipeline 4 end adds gland bonnet; Slowly set up the gauge of about 508Pa, monitor 5 minutes, if system pressure drop-out value is less than 25.4Pa, then system leakproofness is good, if system pressure drop-out value is more than 25.4Pa, then during monitoring, system may be leaked.If pressure monitoring cannot the leakproofness of certainty annuity, determine whether leakage by smearing liquid soap or observe tensimeter 8 reading around assembly, if soap bubble becomes large or pressure durations declines, repeated first step process.May need for high-pressure nitrogen bottle 1 provides isothermal environment, to reduce the pressure change that temperature fluctuation causes.
6th step, oil gas recovery component pressure fall-off test.After carrying out Leak Detection, open testing conduit 4 end cap, set up steady testing stream, read and record pressure reduction, stop flowing afterwards.Re-establish a steady testing stream, second time reads data, stops flowing afterwards.Re-establish a steady testing stream again, third time reads data.Calculate three times record pressure reduction mean value, i.e. the pressure drop of petroleum vapor recovery test suite, this value compared with corresponding component calls, to determine whether oil gas recovery component conforms with the regulations.
Claims (10)
1. refuelling station's secondary oil gas reclaims an engine bench test device for assembly pressure drop, comprises the high-pressure nitrogen bottle (1), mass flowmeter (2), needle valve (3), pipeline (4), pipe flange (5) and the thermometer (7) that are connected successively; It is characterized in that: pipe flange (5) is connected in parallel to low-voltage differential sensor (6); Pipe flange (5) is connected with test suite (9), test suite (9) is connected with tensimeter (8).
2. refuelling station as claimed in claim 1 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: the quantity of pipe flange (5) is two.
3. refuelling station as claimed in claim 2 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: test suite (9) is arranged between two pipe flanges (5).
4. refuelling station as claimed in claim 1 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: tensimeter (8) is set to digital pressure gauge.
5. refuelling station as claimed in claim 1 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: the quantity of needle valve (3) is two.
6. refuelling station as claimed in claim 5 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: two needle valves (3) are connected in parallel.
7. the refuelling station's secondary oil gas according to any one of claim 1-6 reclaims the engine bench test device of assembly pressure drop, it is characterized in that: high-pressure nitrogen bottle (1) is provided with pressure governor.
8. refuelling station as claimed in claim 7 secondary oil gas reclaims the engine bench test device of assembly pressure drop, it is characterized in that: high-pressure nitrogen bottle (1) is provided with two stage pressure regulator.
9. the refuelling station's secondary oil gas according to any one of claim 1-6 reclaims the engine bench test device of assembly pressure drop, it is characterized in that: pipeline (4) is set to round steel pipe.
10. the refuelling station's secondary oil gas according to any one of claim 1-6 reclaims the engine bench test device of assembly pressure drop, it is characterized in that: pipeline (4) is provided with smooth hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818249.3U CN205038045U (en) | 2015-10-21 | 2015-10-21 | Rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818249.3U CN205038045U (en) | 2015-10-21 | 2015-10-21 | Rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205038045U true CN205038045U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520818249.3U Active CN205038045U (en) | 2015-10-21 | 2015-10-21 | Rack testing arrangement of secondary vapor recovery system of filling station subassembly pressure drop |
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|---|---|
| CN (1) | CN205038045U (en) |
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2015
- 2015-10-21 CN CN201520818249.3U patent/CN205038045U/en active Active
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