CN105110283A - Method for automatically monitoring fuel oil and gas recycling liquid resistance of refueling station - Google Patents
Method for automatically monitoring fuel oil and gas recycling liquid resistance of refueling station Download PDFInfo
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- CN105110283A CN105110283A CN201510495937.5A CN201510495937A CN105110283A CN 105110283 A CN105110283 A CN 105110283A CN 201510495937 A CN201510495937 A CN 201510495937A CN 105110283 A CN105110283 A CN 105110283A
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Abstract
The invention relates to a method for automatically monitoring fuel oil and gas recycling liquid resistance of a refueling station. The problems that in the prior art, the automation degree is low, the unqualified liquid resistance cannot be found in time, and when detection is carried out in daytime, operating of the refueling station is greatly affected are solved. By means of the method for automatically monitoring the fuel oil and gas recycling liquid resistance of the refueling station, a valve F1, an oil and gas recycling pump, a flowmeter and a pressure gage C are sequentially arranged on an oil and gas recycling pipeline of a refueling machine in the flowing direction of oil and gas recycling; the pressure gage C is connected with an oil tank, and a measuring bypass is arranged on an outlet of the oil and gas recycling pump; a valve F2, a compressor, a gas storage bottle, a pressure reduction valve and a flow adjusting valve are sequentially arranged on the measuring bypass; and an outlet of the flow adjusting valve is connected with the oil and gas recycling pipe in front of the flowmeter, the pressure gage A is arranged behind the gas storage bottle, and the pressure gage B is arranged behind the pressure reduction valve. By means of the technical scheme, the problems are better solved, and the method can be used for automatically monitoring the fuel oil and gas recycling liquid resistance of the refueling station.
Description
Technical field
The present invention relates to a kind of petrol service station oiling petroleum vapor recovery liquid resistance automatic monitoring method.
Background technology
In recent years, domestic automobile pollution constantly increases fast, and the consumption of finished oil also increases rapidly thereupon.Because the light component in finished oil has stronger volatility, gasoline transport, unload, in the link such as sale, all can volatilize more product vapour.These product vapours are volatile organic compound (volatileorganiccompounds, referred to as VOC), are to cause PM2.5 to exceed standard and one of the main reason of haze weather.
In addition, due to the inflammable and explosive characteristic of product vapour, the discharge of product vapour also can constitute a threat to the safe operation of petrol service station.
In order to effectively control the product vapour pollutants to airborne release in the daily production process of petrol service station, namely China promulgated GB20952-2007 " petrol service station atmosphere pollutants emission standards " in 2007, require that various places petrol service station should complete the retrofit work of petroleum vapor recovery within the regulation time limit.
So-called petroleum vapor recovery, refers to a kind of method that the product vapour being refueled by gasoline and volatilize in emptying process carries out airtight collection.With regard to petrol service station, mainly comprise the petroleum vapor recovery in two stages:
(1) petroleum vapor recovery of first stage is also referred to as emptying petroleum vapor recovery, refers to truck tanker in petrol service station buried tank during emptying, by the oil-gas closed process collected in truck tanker in buried tank.Truck tanker, after emptying, will be taken back oil storage these product vapours collected, further recycle.
(2) petroleum vapor recovery of subordinate phase is also referred to as oiling petroleum vapor recovery, refer to automobile when refueling, oil-gas recovery vacuum pump auxiliary under, by equipment such as petroleum vapor recovery nozzle, coaxial oil gas recovery rubber tubes the gasoline vapor in automotive oil tank is drawn into the process in the sunken tankers of petrol service station.Namely the volume at every turn adding the oil gas steam of oil obtd is called gas liquid ratio with the ratio adding oil volume, in order to make the pressure in sunken tankers keep balance, usually all specifies that gas liquid ratio is at about 1:1, namely often adds 1 liter of oil, namely returns the gas of about 1 liter.
Be not difficult to find out from introduction as above, want to ensure that the gas reclaimed in the oiling gas recovery system for oil of subordinate phase can turn back in petrol storage tank smoothly, the resistance of vapor return line liquid is a wherein the most key index.If the resistance of vapor return line liquid is excessive, return-air will be caused not smooth, the oiling petroleum vapor recovery effect of subordinate phase is had a greatly reduced quality.
In order to ensure the implementation result that gas station oil gas reclaims, GB20952 also especially to liquid resistance performance figure and manual testing's method specify.In addition, in order to effectively ensure the implementation result that gas station oil gas reclaims, GB20952 is special provision also, annual turnover is greater than to the petrol service station of 8000 tons, also should install petroleum vapor recovery on-line monitoring system additional, in real time the parameter such as gas liquid ratio, leakproofness, liquid resistance of device for recovering oil and gas be monitored automatically.
Therefore, be necessary to study the automatic measurement system of gas station oil gas Ethylene recov resistance and method, so that the automatic monitoring of oil gas recovery system of gas station liquid resistance can be realized, fundamentally ensure that petrol service station refuels the implementation result of petroleum vapor recovery.
Summary of the invention
Technical matters to be solved by this invention be in prior art degree of automation low, detect the larger problem of petrol service station business impact by day, provide a kind of new petrol service station to refuel petroleum vapor recovery liquid resistance automatic monitoring method.The method is used for petrol service station and refuels the resistance of petroleum vapor recovery liquid automatically in monitoring, have degree of automation high, detect the advantage less on the impact of petrol service station business by day.
For solving the problem, the technical solution used in the present invention is as follows: a kind of petrol service station oiling petroleum vapor recovery liquid resistance automatic monitoring method, the petroleum vapor recovery pipeline of fuel charger is provided with valve F1 successively along on the flow direction of recovery oil gas, petroleum vapor recovery pump, flow counter, compression indicator C, compression indicator C is connected with oil tank, measurement bypass is provided with at petroleum vapor recovery pump discharge, measure in bypass and set gradually valve F2, compressor, air bottle, reducing valve, flow control valve, flow regulating valve outlet port is connected with the petroleum vapor recovery pipeline before flow counter, compression indicator A is set after on air bottle, compression indicator B is provided with after reducing valve, on tank vent pipe or on other pipeline be directly connected with oil tank top, valve F3 is set, the valve F3 other end is connected with flame trap, flame trap is communicated with air, the signal of compression indicator A, compression indicator B, compression indicator C, flow counter is connected with the analog input channel of controller by signal wire (SW), the signal of valve F1, valve F2, valve F3, compressor, fuel charger power supply is connected by signal wire (SW) one end with respective relay, the other end of respective relay is connected with the respective switching value contact on controller by signal wire (SW), and the analog output channel of controller is connected with reducing valve, flow control valve respectively by signal wire (SW), realized the function of instrumented data collection, by-pass valve control switch, control fuel charger power supply, data inventory analysis, generation alarm message by controller, whether the liquid that automatically can detect petrol service station oiling gas recovery system for oil according to standard procedure at oiling low peak period hinders up to standard.
In technique scheme, preferably, manual drain valve is provided with bottom described air bottle.
In technique scheme, preferably, for the petrol service station having installed oil gas after-treatment device, valve F4 is set at the admission port of oil gas after-treatment device, the signal of valve F4 is connected with one end of relay by signal wire (SW), and the other end of relay is connected with the switching value contact on controller by signal wire (SW).
In technique scheme, preferably, also pressure/vacuum is provided with on described tank vent pipe or on other pipeline be directly connected with oil tank top.
In technique scheme, preferably, described valve F1, valve F2, valve F3, valve F4 are electric control valve.
In technique scheme, preferably, controller sends signal and opens electronic control pressure reducing valve and flow control valve, is regulated the aperture of electronic control pressure reducing valve, make the numerical value of compression indicator B be held in 35kPa by the signal feedback of compression indicator B; The aperture of automatically controlled flow control valve is regulated by the signal feedback of flow counter, the flow of gas is kept 45 seconds respectively at 18 liters/min, 28 liters/min, 38 liters/min successively, controller can keep at flow the numerical value reading compression indicator C for 30 seconds afterwards, is liquid resistent value P1, P2, the P3 under corresponding discharge; P1, P2, P3 of recording are compared with 40Pa, 90Pa, 155Pa of specifying in GB20952 respectively, if measure numerical value to be greater than the resistance of regulation liquid, is nonconformity, otherwise, for qualified.
At present, the liquid resistance of oil gas recovery system of gas station relies on manually detect completely, and each detection needs to carry a large amount of instrument and equipments, as nitrogen gas cylinder, liquid resistance tester, pressure/vacuum, test line etc., testing process needs multiple person cooperational to complete, and is very loaded down with trivial details.In addition, it is complicated that liquid resistance detects set up procedure, and time length is longer, and testing process another as on petrol service station operating capacity larger daytime, cause each detection not only to take time and effort, and larger impact caused on the daily business of petrol service station.For this reason, this invention exploits a kind of petrol service station oiling petroleum vapor recovery liquid resistance automated monitoring system, whether the liquid resistance that this system can detect petrol service station oiling gas recovery system for oil according to standard procedure automatically at oiling low peak period is up to standard, easy to use, need not manual intervention, a large amount of manpower and materials can be saved, and petrol service station business is not almost affected, achieve good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for the invention.
Fig. 2 is control linkage schematic diagram of the present invention.
In Fig. 1 or Fig. 2,1 is oil feed line; 2 is petroleum vapor recovery pipeline; 3 is compressor; 4 is compression indicator A; 5 is valve F2; 6 is petroleum vapor recovery pump; 7 is valve F1; 8 is air bottle; 9 is tapping valve; 10 is reducing valve; 11 is compression indicator B; 12 is compression indicator C; 13 is flow counter; 14 is flow control valve; 15 is valve F3; 16 is back-fire relief cap; 17 is pressure/vacuum; 18 is valve F4; 19 is oil gas after-treatment device; 20 is oil tank; 21 is oil feed pump; 22 is the analog input channel of controller; 23 is controller; 24 is the switching value contact of controller; 25 is the analog output channel of controller; 26 ~ 31 is relay; 32 is fuel charger power supply.
Below by embodiment, the invention will be further elaborated, but be not limited only to the present embodiment.
Detailed description of the invention
[embodiment 1]
As shown in Figure 1, the petrol service station oiling petroleum vapor recovery liquid resistance automated monitoring system of the present invention's design is formed primarily of the assembly such as 4 electric control valves, compressor, air bottle, 3 compression indicators, flow counter, electronic control pressure reducing valve, automatically controlled flow control valve, flame traps.
Wherein, electrically-controlled valve F1 is arranged in fuel charger before oil-gas recovery vacuum pump, is provided with a measurement bypass after oil-gas recovery vacuum pump, has set gradually electrically-controlled valve F2, compressor, air bottle, electronic control pressure reducing valve, automatically controlled flow control valve.A compression indicator is provided with respectively on air bottle, after electronic control pressure reducing valve and after flow counter.In order to regularly discharge the liquid that may gather in air bottle, be also provided with a manual drain valve in the bottom of air bottle.The other end measuring bypass accesses below the petroleum vapor recovery pipeline of fuel charger, and is being provided with flow counter and compression indicator C thereafter.
In addition, in order to make sunken tankers be communicated with air when measuring, can on tank vent pipe or other be provided with an electrically-controlled valve F3 with the position that oil tank top is directly connected, valve F3 passes through flame trap connection air.When implementing, because this pipeline section may discharge section oil gas, therefore should be arranged on the top of freeing pipe as far as possible.
For the petrol service station having installed oil gas after-treatment device, the interference that oil gas after-treatment device brings in measurement process, also should install an electrically-controlled valve F4 at the admission port of oil gas after-treatment device, is used for closing the oil gas post-processing air inlet of device when measuring.
As shown in Figure 2, controller is control core of the present invention, is used for realizing instrumented data collection, by-pass valve control switch, control fuel charger power supply, data inventory analysis, generating the functions such as alarm message.
When implementing, controller can adopt conventional Industry Control element, as industrial computer, programmable logic controller (PLC) etc.
The signal of compression indicator, flow counter is linked on the analog input port of controller by the analog signal of standard.
The control signal of electrically-controlled valve, the start stop signal of compressor and fuel charger power control signal are linked on the switch contact of controller by relay.
Electronic control pressure reducing valve, flow control valve can be accessed by the analog output terminal of controller.
Because gas recovery system for oil liquid resistance test needs continue for some time, therefore, in order to avoid impacting the daily business of petrol service station in measurement process, system is automatically measure at the low peak period refueled.
Controller, can the oiling situation of 24 hours uninterrupted monitoring fuel chargers by the flow signal of flow counter in monitoring petroleum vapor recovery pipeline, thus draws volume read-out less time period every day.At the low peak period that these volume read-outs are less, the present invention will measure automatically.Detailed process is as follows:
The first, in measurement process, refuel the measured error brought, first controller sends signal by all fuel charger supply disconnectons.
The second, if petrol service station has installed oil gas after-treatment device, first to close the control cock F4 of oil gas after-treatment device entrance, thus oil gas after-treatment device is shut down; If petrol service station does not install oil gas after-treatment device, then without the need to carrying out this operation.
3rd, close the electrically-controlled valve F1 before oil-gas recovery vacuum pump and the automatically controlled flow control valve before flow counter, electronic control pressure reducing valve and valve F3 keep closed condition, open valve F2, compressor successively, now under the effect of compressor, the oil gas stored in petrol storage tank will be filled in air bottle, and the signal of compression indicator A reflects the gaseous tension in air bottle, when monitoring control devices has arrived setting value to the signal of compression indicator A, close compressor, valve F2 successively.
4th, open electrically-controlled valve 3, oil tank is connected with air, controller judges the force value of current oil tank by the signal of compression indicator C.Be stabilized in after barometric pressure a period of time until tank pressure, liquid resistance can be started and measure.
5th, controller sends signal and opens electronic control pressure reducing valve and flow control valve, is regulated the aperture of electronic control pressure reducing valve, make the numerical value of compression indicator B be held near 35kPa by the signal feedback of compression indicator B; Regulated the aperture of automatically controlled flow control valve by the signal feedback of flow counter, the flow of gas is kept about 45 seconds at 18 liters/min, controller can keep at flow the numerical value reading compression indicator C for 30 seconds afterwards, is the liquid resistent value P1 under this flow; In like manner, gas flow is kept about 45 seconds successively at 28 liters/min, 38 liters/min, controller can keep at flow the numerical value reading compression indicator C for 30 seconds afterwards, is liquid resistent value P2, the P3 under this flow.
6th, P1, P2, P3 of recording are compared respectively at 40Pa, 90Pa, the 155Pa specified in GB20952, can learn whether liquid resistance is qualified.If measure numerical value to be greater than the resistance of regulation liquid, be nonconformity.
7th, after measurement completes, controller sends instruction and progressively opens large electronic control pressure reducing valve and automatically controlled flow control valve, gas in air bottle is unloaded to the greatest extent, electronic control pressure reducing valve, flow control valve, valve F1, valve F3 open valve F4 can be closed when the signal recuperation of compression indicator A is near barometric pressure, open fuel charger power supply, again make petrol service station enter business status.
[comparative example]
At present, the detection of the liquid resistance of oil gas recovery system of gas station relies on completely manually to be carried out, each detection need carry 40L (12MPa) nitrogen gas cylinder (1*0.2m, 50kg), liquid resistance tester, pressure/vacuum etc., because instrument is more, generally need many people to coordinate during detection and carry out.
During each detection, in order to prevent mutual interference, need, by petrol service station close of business, to open basin at the bottom of oil tank petroleum vapor recovery mouth and fuel charger.The assemblies such as nitrogen gas cylinder, tester, pressure/vacuum are connected to the threeway detection tabs of refueling on petroleum vapor recovery standpipe.
Then open nitrogen gas cylinder, arranging nitrogen output pressure is 35kPa.Regulate nitrogen flow to be 18 respectively, 28,38L/min, the liquid detecting 3 flows corresponding hinders.Before reading compression indicator numerical value, nitrogen flow stable time should be greater than 30s.
If have any 1 to be greater than the maximum pressure limit value specified in GB20952-2007 in 3 liquid resistance detected values, then the resistance of petrol service station liquid detects nonconformity.
Be not difficult to find out from above-mentioned testing process, it is complicated that liquid resistance detects set up procedure, and time length is longer, and testing process another as on petrol service station operating capacity larger daytime, cause each detection not only to take time and effort, and larger impact is caused on the daily business of petrol service station.In addition, owing to relying on manual operation and reading, liquid resistance detects often because the difference such as equipment, personnel causes final testing result difference to some extent; The interval of artificial sampling observation is often longer, short then one month, long then even 1 year half a year, even if there is problem in liquid resistance, also cannot Timeliness coverage, and finally cause petroleum vapor recovery efficiency to be had a greatly reduced quality.
Obviously, a kind of petrol service station oiling petroleum vapor recovery liquid resistance automated monitoring system of the present invention's exploitation, whether the liquid resistance that this system can detect petrol service station oiling gas recovery system for oil according to standard procedure automatically in oiling low peak period (being generally night) is up to standard, easy to use, need not manual intervention, a large amount of manpower and materials can be saved, and petrol service station business is not almost affected, degree of automation is high, can Timeliness coverage oil gas recovery system of gas station liquid resistance problem, ensure the operating efficiency of gas recovery system for oil, achieve good green technology effect.
Claims (6)
1. a petrol service station oiling petroleum vapor recovery liquid resistance automatic monitoring method, the petroleum vapor recovery pipeline of fuel charger is provided with valve F1 successively along on the flow direction of recovery oil gas, petroleum vapor recovery pump, flow counter, compression indicator C, compression indicator C is connected with oil tank, measurement bypass is provided with at petroleum vapor recovery pump discharge, measure in bypass and set gradually valve F2, compressor, air bottle, reducing valve, flow control valve, flow regulating valve outlet port is connected with the petroleum vapor recovery pipeline before flow counter, compression indicator A is set after on air bottle, compression indicator B is provided with after reducing valve, on tank vent pipe or on other pipeline be directly connected with oil tank top, valve F3 is set, the valve F3 other end is connected with flame trap, flame trap is communicated with air, the signal of compression indicator A, compression indicator B, compression indicator C, flow counter is connected with the analog input channel of controller by signal wire (SW), the signal of valve F1, valve F2, valve F3, compressor, fuel charger power supply is connected by signal wire (SW) one end with respective relay, the other end of respective relay is connected with the respective switching value contact on controller by signal wire (SW), and the analog output channel of controller is connected with reducing valve, flow control valve respectively by signal wire (SW), realized the function of instrumented data collection, by-pass valve control switch, control fuel charger power supply, data inventory analysis, generation alarm message by controller, whether the liquid that automatically can detect petrol service station oiling gas recovery system for oil according to standard procedure at oiling low peak period hinders up to standard.
2. petrol service station oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterized in that being provided with manual drain valve bottom described air bottle.
3. petrol service station oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterized in that the petrol service station for having installed oil gas after-treatment device, at the admission port of oil gas after-treatment device, valve F4 is set, the signal of valve F4 is connected with one end of relay by signal wire (SW), and the other end of relay is connected with the switching value contact on controller by signal wire (SW).
4. petrol service station refuels petroleum vapor recovery liquid resistance automatic monitoring method according to claim 1, to it is characterized in that on described tank vent pipe or pipeline that other is directly connected with oil tank top is also provided with pressure/vacuum.
5. petrol service station oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterized in that described valve F1, valve F2, valve F3, valve F4 are electric control valve.
6. petrol service station oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterized in that controller sends signal and opens electronic control pressure reducing valve and flow control valve, regulated the aperture of electronic control pressure reducing valve by the signal feedback of compression indicator B, make the numerical value of compression indicator B be held in 35kPa; The aperture of automatically controlled flow control valve is regulated by the signal feedback of flow counter, the flow of gas is kept 45 seconds respectively at 18 liters/min, 28 liters/min, 38 liters/min successively, controller can keep at flow the numerical value reading compression indicator C for 30 seconds afterwards, is liquid resistent value P1, P2, the P3 under corresponding discharge; P1, P2, P3 of recording are compared with 40Pa, 90Pa, 155Pa of specifying in GB20952 respectively, if measure numerical value to be greater than the resistance of regulation liquid, is nonconformity, otherwise, for qualified.
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Cited By (6)
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| CN105910960A (en) * | 2016-06-24 | 2016-08-31 | 安徽创新检测技术有限公司 | Oil and gas recovery liquid resistance detection method |
| CN107555388A (en) * | 2017-09-27 | 2018-01-09 | 北京恒合信业技术股份有限公司 | Detect device, method, equipment and the monitoring system of petroleum vapor recovery pipeline liquid resistance |
| CN107697879A (en) * | 2017-09-27 | 2018-02-16 | 北京恒合信业技术股份有限公司 | A kind of on-line monitoring system for oil gas recovery of gas station |
| CN109734043A (en) * | 2018-12-18 | 2019-05-10 | 宝泰科技有限公司 | A kind of automated calibration system for gas station oil gas recycling |
| CN110510566A (en) * | 2019-09-03 | 2019-11-29 | 河南英高能源科技有限公司 | A kind of oiling volume control device |
| CN111693228A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Oil gas recovery comprehensive tester of gas station |
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| CN109734043B (en) * | 2018-12-18 | 2020-06-26 | 宝泰科技有限公司 | Automatic calibration system for oil gas recovery of gas station |
| CN111693228A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Oil gas recovery comprehensive tester of gas station |
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| CN110510566B (en) * | 2019-09-03 | 2020-11-20 | 河南英高能源科技有限公司 | Refuel flow control device |
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Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Applicant after: SINOPEC Research Institute OF SAFETY ENGINEERING Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 100728 Chaoyangmen street, Beijing, No. 22, No. Applicant before: CHINA PETROLEUM & CHEMICAL Corp. Applicant before: SINOPEC Research Institute OF SAFETY ENGINEERING |
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Effective date of registration: 20221110 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING Patentee before: CHINA PETROLEUM & CHEMICAL Corp. |
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