CN101915358A - Return oil detection method of hydraulic type natural gas vehicle gas-filling substation - Google Patents
Return oil detection method of hydraulic type natural gas vehicle gas-filling substation Download PDFInfo
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- CN101915358A CN101915358A CN 201010237833 CN201010237833A CN101915358A CN 101915358 A CN101915358 A CN 101915358A CN 201010237833 CN201010237833 CN 201010237833 CN 201010237833 A CN201010237833 A CN 201010237833A CN 101915358 A CN101915358 A CN 101915358A
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Abstract
The invention relates to a return oil detection method of a hydraulic type natural gas vehicle gas-filling substation and belongs to the technical field of return oil detection technology of the gas-filling substation, and the hydraulic type natural gas vehicle gas-filling substation comprises a high pressure flowmeter, a substation trailer, a hydraulic oil tank, a substation prying body, a main hydraulic oil pump, a hydraulic oil pump motor, a PLC control cabinet, a variable frequency control cabinet and a wind source device; the average flow of hydraulic oil and the average flow of natural gas in a pipeline are obtained by experiments, then output signals of the high pressure flowmeter are sent to a CPU of a PLC for processing, and whether the substance that flows through an oil return pipeline is the hydraulic oil or the natural gas is judged by the PLC by detecting the size of an instant flow signal that flows through the high pressure flowmeter when the hydraulic type natural gas vehicle gas-filling substation returns oil. The method has the advantages of judging the medium type in the oil return pipeline according to an instant flow value of the high pressure flowmeter on the oil return pipeline of the hydraulic type natural gas vehicle gas-filling substation and solving the problems of false operations and low security.
Description
Technical field
The invention belongs to air entraining substation oil return detection technique field, a kind of return oil detection method of hydraulic type natural gas vehicle gas-filling substation particularly is provided, according to the size of high-pressure flowmeter instantaneous flow value on the hydraulic natural gas automobile secondary gas filling station return line, judge the kind of the medium in the return line.
Background technique
Rock gas is that colorless and odorless is nontoxic, calorific value is high, the high-grade energy of flameholding, clean environmental protection.Compression type rock gas (CNG) is as the alternative fuel of city bus, taxi, short-distance transport, and it has low price, and is pollution-free etc., and lot of advantages has obtained increasing application in the whole nation.Set up female station at the natural air-air source place, natural pressure is condensed to 20MPa, be transported to the substation in city again by the substation trailer.By hydraulic natural gas automobile secondary gas filling station, by main hydraulic-pressure pump supplementary pressure constantly, pump the hydraulic oil that comes against main hydraulic-pressure pump, the rock gas in the trailer of substation is maintained about 21MPa, continuously add in user's the equipment and go.
The working procedure of hydraulic natural gas automobile secondary gas filling station is: at first by high pressure oil pump, hydraulic oil in the prying body of substation is pumped in the trailer of substation, make rock gas in the trailer of substation remain on constant (19～21MPa) pressure, and then enter in user's the equipment.When hydraulic oil pump on the trailer of substation single only bottle volume 95% the time, no longer continue pump oil in the bottle, but rely on single only bottle on the trailer of substation remaining (air pressure of 19～21MPa) 5% rock gases pushes back the substation prying body to bottle interior hydraulic oil.How to detect hydraulic oil and whether pushed back the substation prying body fully, be a headachy problem always.What have installs optoelectronic switch on the hydraulic natural gas automobile secondary gas filling station return line, the setting pressure switch in the fuel tank of substation prying body that has, but effect is not very desirable, misoperation and low-security affect the normal operation continuously of equipment always.
Summary of the invention
The object of the present invention is to provide a kind of return oil detection method of hydraulic type natural gas vehicle gas-filling substation, solved the problem of misoperation and lower security.
The present invention adopts high-pressure flowmeter, the two kinds of different mediums (hydraulic pressure oil and gas) that differ greatly according to the density that flows through in the hydraulic natural gas automobile secondary gas filling station return line, size by the detected instantaneous flow of high-pressure flowmeter, set interval range, judge the medium that flows through in the pipeline.
As seen from Figure 1, because two media density differs greatly, under the situation of pressure space temperature unanimity, the instantaneous flow that flows through high-pressure flowmeter has very big difference.
Hydraulic natural gas automobile secondary gas filling station of the present invention comprises: high-pressure flowmeter, substation trailer, hydraulic oil container, substation prying body, main hydraulic-pressure pump, hydraulic-pressure pump motor, PLC control cabinet, VFC cabinet, general mood source device; Obtain the mean flowrate of hydraulic oil in the pipeline and the mean flowrate of rock gas by experiment, the output signal of high-pressure flowmeter is delivered among the CPU of PLC and is handled, flow through the size of the instantaneous flow rate signal of high-pressure flowmeter when detecting the hydraulic natural gas automobile secondary gas filling station oil return, judge that by PLC what flow through in the return line is hydraulic oil or rock gas;
In return line, set three operating mode intervals:
1, the interval of crossing without any MEDIA FLOW in the hydraulic natural gas automobile secondary gas filling station return line (interval A), the output flow of corresponding high-pressure flowmeter are zero.
2, one is the interval (interval B) of flowing through hydraulic oil in the hydraulic natural gas automobile secondary gas filling station return line, and corresponding is the lower flow in the left side in (Fig. 1).
3, one is the interval (interval C) of flowing through rock gas in the hydraulic natural gas automobile secondary gas filling station return line, and corresponding is the right higher flows in (Fig. 1).
By gathering the signal (Fig. 2) of high-pressure flowmeter, compare the numerical value in three intervals by PLC automatically, judge the medium that flows through in the pipeline, handle accordingly then.
Description of drawings
Fig. 1 is high-pressure flowmeter transient change quantitative analysis figure of the present invention.Wherein X-axis is the time, and Y-axis is a flow, and A, B, C are three districts in the oil pipe line.
Fig. 2 is the flow chart of hydraulic part of the present invention.Motor 5, substation prying body 6, gas selling machine 7, the high-pressure flowmeter 8 of the main hydraulic-pressure pump of the gas outlet valve platform 3 of the oiling valve platform 1 of substation trailer, the scavenger valve platform 2 of substation trailer, substation trailer, the fuel tank 4 of substation prying body, substation.
Embodiment
Hydraulic natural gas automobile secondary gas filling station of the present invention comprises: high-pressure flowmeter, substation trailer, hydraulic oil container, substation prying body, main hydraulic-pressure pump, hydraulic-pressure pump motor, PLC control cabinet, VFC cabinet, general mood source device; Obtain the mean flowrate of hydraulic oil in the pipeline and the mean flowrate of rock gas by experiment, the output signal of high-pressure flowmeter is delivered among the CPU of PLC and is handled, flow through the size of the instantaneous flow rate signal of high-pressure flowmeter when detecting the hydraulic natural gas automobile secondary gas filling station oil return, judge that by PLC what flow through in the return line is hydraulic oil or rock gas.In return line, set three operating mode intervals:
When the hydraulic natural gas automobile secondary gas filling station oil return begins, be full of hydraulic oil in the substation trailer of this moment, flow through in the hydraulic natural gas automobile secondary gas filling station return line whole be hydraulic oil, the instantaneous flow value of high-pressure flowmeter output becomes interval B by interval A.By detecting the flux signal of high-pressure flowmeter, can judge to have beginning.
When the hydraulic oil in the trailer of substation has returned, the medium that flows through in the hydraulic natural gas automobile secondary gas filling station return line becomes rock gas by hydraulic oil, the instantaneous flow value of high-pressure flowmeter becomes interval C by interval B, by detecting the flux signal of high-pressure flowmeter, can judge that oil return finishes, turn-off corresponding automatic valve.
Claims (1)
1. return oil detection method of hydraulic type natural gas vehicle gas-filling substation; Described hydraulic natural gas automobile secondary gas filling station comprises: high-pressure flowmeter, substation trailer, hydraulic oil container, substation prying body, main hydraulic-pressure pump, hydraulic-pressure pump motor, PLC control cabinet, VFC cabinet, general mood source device; It is characterized in that: obtain the mean flowrate of hydraulic oil in the pipeline and the mean flowrate of rock gas by experiment, the output signal of high-pressure flowmeter is delivered among the CPU of PLC and is handled, flow through the size of the instantaneous flow rate signal of high-pressure flowmeter when detecting the hydraulic natural gas automobile secondary gas filling station oil return, judge that by PLC what flow through in the return line is hydraulic oil or rock gas;
In return line, set three operating mode intervals:
(1) the interval A that crosses without any MEDIA FLOW in the hydraulic natural gas automobile secondary gas filling station return line, the output flow of corresponding high-pressure flowmeter are zero;
(2) flow through the interval B of hydraulic oil in the hydraulic natural gas automobile secondary gas filling station return line, corresponding lower flow;
(3) flow through the interval C of rock gas in the hydraulic natural gas automobile secondary gas filling station return line, corresponding is higher flows.
PLC compares the numerical value in three intervals automatically by gathering the signal of high-pressure flowmeter, judges the medium that flows through in the pipeline, handles accordingly then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102378331A CN101915358B (en) | 2010-07-23 | 2010-07-23 | Return oil detection method of hydraulic type natural gas vehicle gas-filling substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102378331A CN101915358B (en) | 2010-07-23 | 2010-07-23 | Return oil detection method of hydraulic type natural gas vehicle gas-filling substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101915358A true CN101915358A (en) | 2010-12-15 |
| CN101915358B CN101915358B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102378331A Active CN101915358B (en) | 2010-07-23 | 2010-07-23 | Return oil detection method of hydraulic type natural gas vehicle gas-filling substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705702A (en) * | 2012-06-21 | 2012-10-03 | 重庆耐德能源装备集成有限公司 | Auxiliary unit used for hydraulic horizontal-pushing pressurizer and hydraulic horizontal-pushing pressurizer |
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| US5635625A (en) * | 1994-07-06 | 1997-06-03 | Yamada Corporation | Oil changer |
| JP2003002400A (en) * | 2001-06-21 | 2003-01-08 | Corona Corp | Concentrated oil feeding system |
| JP2004001787A (en) * | 2002-05-30 | 2004-01-08 | Cosmo Oil Co Ltd | Self gas station control system and gas station information management system |
| CN1583480A (en) * | 2004-05-27 | 2005-02-23 | 张云岭 | Non-power natural gas supplying system and method thereof |
| CN200949748Y (en) * | 2006-08-28 | 2007-09-19 | 重庆四联加油机器制造有限公司 | Single tube filling measuring liquefied natural gas supplying device |
| CN101298244A (en) * | 2008-05-30 | 2008-11-05 | 邯郸新兴重型机械有限公司 | Hydraulic natural gas automobile secondary gas filling station |
| CN201161923Y (en) * | 2006-12-25 | 2008-12-10 | 安瑞科(廊坊)能源装备集成有限公司 | Gas feeding substation system for hydraulic natural gas automobile |
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2010
- 2010-07-23 CN CN2010102378331A patent/CN101915358B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5635625A (en) * | 1994-07-06 | 1997-06-03 | Yamada Corporation | Oil changer |
| JP2003002400A (en) * | 2001-06-21 | 2003-01-08 | Corona Corp | Concentrated oil feeding system |
| JP2004001787A (en) * | 2002-05-30 | 2004-01-08 | Cosmo Oil Co Ltd | Self gas station control system and gas station information management system |
| CN1583480A (en) * | 2004-05-27 | 2005-02-23 | 张云岭 | Non-power natural gas supplying system and method thereof |
| CN200949748Y (en) * | 2006-08-28 | 2007-09-19 | 重庆四联加油机器制造有限公司 | Single tube filling measuring liquefied natural gas supplying device |
| CN201161923Y (en) * | 2006-12-25 | 2008-12-10 | 安瑞科(廊坊)能源装备集成有限公司 | Gas feeding substation system for hydraulic natural gas automobile |
| CN101298244A (en) * | 2008-05-30 | 2008-11-05 | 邯郸新兴重型机械有限公司 | Hydraulic natural gas automobile secondary gas filling station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102705702A (en) * | 2012-06-21 | 2012-10-03 | 重庆耐德能源装备集成有限公司 | Auxiliary unit used for hydraulic horizontal-pushing pressurizer and hydraulic horizontal-pushing pressurizer |
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| CN101915358B (en) | 2012-02-15 |
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Owner name: XINXING ENERGY EQUIPMENT CO., LTD. Free format text: FORMER NAME: HANDAN XINXING HEAVY MACHINERY CO., LTD. |
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Address after: 056107 Handan Development Zone, Hebei Province, harmony street, No. 99 Patentee after: Xinxing Energy Equipment Co., Ltd. Address before: 056017, 4, Petrochemical street, Fuxing District, Hebei, Handan Patentee before: Handan Xinxing Heavy Machinery Co., Ltd. |