CN105110283B - Gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method - Google Patents
Gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method Download PDFInfo
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Abstract
Automatic monitoring method is hindered the present invention relates to a kind of gas station's oiling petroleum vapor recovery liquid, mainly solves that automaticity in the prior art is low, can not to find liquid resistance in time unqualified, the problem of detection on daytime is larger on the influence of gas station's business.The present invention hinders automatic monitoring method by using a kind of gas station's oiling petroleum vapor recovery liquid, on the petroleum vapor recovery pipeline of fuel charger valve F1 is sequentially provided with along along the flow direction for reclaiming oil gas, petroleum vapor recovery pump, flowmeter, pressure gauge C, pressure gauge C is connected with oil tank, bypassed in petroleum vapor recovery pump discharge provided with measurement, valve F2 is set gradually in measurement bypass, compressor, gas cylinder, pressure-reducing valve, flow control valve, Flow-rate adjustment valve outlet is connected with the petroleum vapor recovery pipeline before flowmeter, pressure gauge A is set after on gas cylinder, the technical scheme that pressure gauge B is provided with after pressure-reducing valve preferably solves above mentioned problem, available in the automatic monitoring of gas station's oiling petroleum vapor recovery liquid resistance.
Description
Technical field
Automatic monitoring method is hindered the present invention relates to a kind of gas station's oiling petroleum vapor recovery liquid.
Background technology
In recent years, the continuous rapid growth of domestic car ownership, the consumption of product oil is also increased rapidly therewith.Due to
Light components in product oil have stronger volatility, transport in gasoline, in the link such as unload, sell, can volatilize
More product vapour.These product vapours are VOC (volatile organic compounds, letter
Referred to as VOC), it is to cause that PM2.5 is exceeded and one of the main reason of haze weather.
Further, since the inflammable and explosive characteristic of product vapour, the discharge of product vapour can also be to the safe operation of gas station
Constitute a threat to.
In order to be effectively controlled the product vapour pollutant discharged in the daily production process in gas station to air, China in
GB20952-2007 is promulgated within 2007《Gas station's atmosphere pollutants emission standardses》, it is desirable to various regions gas station should be in regulation
The retrofit work of petroleum vapor recovery is completed in limit.
So-called petroleum vapor recovery, refer to refueling in gasoline carries out closed collection with the product vapour volatilized during emptying
A kind of method.It is main to include the petroleum vapor recovery in two stages for gas station：
(1) petroleum vapor recovery of first stage is also referred to as emptying petroleum vapor recovery, refers to oil truck to the buried storage in gas station
In tank during emptying, by the oil-gas closed process being collected into oil truck in buried tank.Oil truck is after emptying, it will this
The product vapour collected a bit takes back storage tank farm, is further recycled.
(2) petroleum vapor recovery of second stage is also referred to as oiling petroleum vapor recovery, automobile is referred in oiling, in petroleum vapor recovery
Under the auxiliary of vavuum pump, the gasoline in automotive oil tank is steamed by equipment such as petroleum vapor recovery nozzle, coaxial oil gas recovery rubber tubes
Vapour is drawn into the process in the sunken tankers of gas station.The ratio between volume and oiling volume of the oil gas steam that oiling is extracted are every time
Referred to as gas liquid ratio, in order that the pressure in sunken tankers keeps balance, generally all provides gas liquid ratio 1：1 or so, i.e., often add 1 liter
Oil, that is, return 1 liter or so of gas.
It is not difficult to find out from introduction as above, the gas reclaimed in the oiling gas recovery system for oil for wanting guarantee second stage
Smoothly it can return in oil storage tank, the resistance of vapor return line liquid is a wherein the most key index.If vapor return line liquid hindered
Greatly, it may result in that return-air is not smooth, the oiling petroleum vapor recovery effect of second stage is had a greatly reduced quality.
In order to ensure implementation result that gas station oil gas is reclaimed, performance indications that GB20952 is also especially hindered liquid and artificial
Method of testing is provided.In addition, the implementation result in order to which gas station oil gas recovery is effectively ensured, GB20952 is also especially advised
Fixed, the gas station for annual turnover more than 8000 tons should also install petroleum vapor recovery on-line monitoring system additional, and oil gas is returned in real time
The parameters such as gas liquid ratio, seal, the liquid resistance of receiving apparatus are monitored automatically.
Therefore, it is necessary to which the automatic measurement system and method that hinder gas station oil gas recovered liquid are studied, with can be real
The automatic monitoring of existing oil gas recovery system of gas station liquid resistance, fundamentally ensures the implementation result of gas station's oiling petroleum vapor recovery.
The content of the invention
The technical problems to be solved by the invention are that automaticity is low in the prior art, on daytime, detection is sought to gas station
The problem of industry influence is larger hinders automatic monitoring method there is provided a kind of new gas station's oiling petroleum vapor recovery liquid.This method is used to add
In the automatic monitoring of petrol station oiling petroleum vapor recovery liquid resistance, with automaticity it is high, detection on daytime on the influence of gas station's business compared with
Small advantage.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of gas station's oiling petroleum vapor recovery liquid resistance is certainly
Dynamic monitoring method, valve F1, oil gas time are sequentially provided with the petroleum vapor recovery pipeline of fuel charger along along the flow direction for reclaiming oil gas
Pump, flowmeter, pressure gauge C are received, pressure gauge C is connected with oil tank, bypassed in petroleum vapor recovery pump discharge provided with measurement, in measurement bypass
Valve F2, compressor, gas cylinder, pressure-reducing valve, flow control valve are set gradually, Flow-rate adjustment valve outlet is returned with the oil gas before flowmeter
Closed tube road is connected, on gas cylinder after pressure gauge A is set, be provided with after pressure-reducing valve on pressure gauge B, tank vent pipe or it is other with it is oily
Tank top is joined directly together setting valve F3 on logical pipeline, and the valve F3 other ends are connected with spark arrester, spark arrester connection air；Pressure gauge
A, pressure gauge B, pressure gauge C, the signal of flowmeter are connected by signal wire with the analog input channel of controller, valve F1, valve F2,
Valve F3, compressor, the signal of oiling electromechanical source are connected by signal wire with one end of respective relay, respective relay
The other end is connected by signal wire with the respective switching value contact on controller, and the analog output channel of controller passes through signal
Line is connected with pressure-reducing valve, flow control valve respectively；Realize that instrumented data is gathered, control valve is switched, control adds by controller
Oil machine power supply, data storage analysis, the function of generation warning message, can add in automatic detected according to standardization program of oiling low peak period
Whether the liquid resistance of petrol station oiling gas recovery system for oil is up to standard.
In above-mentioned technical proposal, it is preferable that the gas cylinder bottom is provided with manual drain valve.
In above-mentioned technical proposal, it is preferable that the gas station for being mounted with oil gas after-treatment device, post-process and fill in oil gas
The air inlet put sets valve F4, and valve F4 signal is connected by signal wire with one end of relay, and the other end of relay passes through
Signal wire is connected with the switching value contact on controller.
In above-mentioned technical proposal, it is preferable that on the tank vent pipe or other and oil tank top is joined directly together logical pipe
Pressure/vacuum is additionally provided with road.
In above-mentioned technical proposal, it is preferable that the valve F1, valve F2, valve F3, valve F4 are electric control valve.
In above-mentioned technical proposal, it is preferable that controller sends signal and opens electronic control pressure reducing valve and flow control valve, pass through pressure
The aperture of power table B signal feedback regulation electronic control pressure reducing valve, makes pressure gauge B numerical value be held in 35kPa；Pass through the letter of flowmeter
The aperture of number automatically controlled flow control valve of feedback regulation, makes the flow of gas successively in 18 liters/min, 28 liters/min, 38 liters/min of difference
Kept for 45 seconds, controller can read pressure gauge C numerical value after flow is kept for 30 seconds, liquid resistent value P1 as under corresponding discharge,
P2、P3；P1, P2, P3 for measuring are compared with 40Pa, 90Pa, 155Pa specified in GB20952 respectively, if measured value
It is as unqualified more than regulation liquid resistance, conversely, being qualified.
At present, the liquid resistance of oil gas recovery system of gas station is completely dependent on manually being detected, and detection needs to carry every time
Substantial amounts of instrument and equipment, such as nitrogen cylinder, liquid resistance tester, pressure/vacuum, test line, detection process need many people associations
Complete, be very cumbersome.In addition, liquid resistance detection preparation routine is complicated, the duration is longer, and detection process it is another as refueling
Operating capacity of standing larger daytime, cause detection every time not only to take time and effort, and the daily business of gas station is caused larger
Influence.Therefore, the present invention develops a kind of gas station's oiling petroleum vapor recovery liquid resistance automatic monitoring system, the system can be low in oiling
Peak phase automatic whether up to standard, easy to use, the Wu Xuren of liquid resistance that oiling gas recovery system for oil in gas station's is detected according to standardization program
Work is intervened, and can save a large amount of manpower and materials, and gas station's business is had little to no effect, and achieves preferable technique effect.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the method for the invention.
Fig. 2 is control connection diagram of the present invention.
In Fig. 1 or Fig. 2,1 is oil feed line；2 be petroleum vapor recovery pipeline；3 be compressor；4 be pressure gauge A；5 be valve F2；6
For petroleum vapor recovery pump；7 be valve F1；8 be gas cylinder；9 be tapping valve；10 be pressure-reducing valve；11 be pressure gauge B；12 be pressure gauge C；
13 be flowmeter；14 be flow control valve；15 be valve F3；16 be back-fire relief cap；17 be pressure/vacuum；18 be valve F4；19 be oil
Gas after-treatment device；20 be oil tank；21 be oil feed pump；22 be the analog input channel of controller；23 be controller；24 be control
The switching value contact of device；25 be the analog output channel of controller；26~31 be relay；32 be oiling electromechanical source.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
【Embodiment 1】
As shown in figure 1, gas station's oiling petroleum vapor recovery liquid resistance automatic monitoring system that the present invention is designed is main automatically controlled by 4
The component structure such as valve, compressor, gas cylinder, 3 pressure gauges, flowmeter, electronic control pressure reducing valve, automatically controlled flow control valve, spark arresters
Into.
Wherein, electrically-controlled valve F1 is arranged in fuel charger before oil-gas recovery vacuum pump, and one is provided with after oil-gas recovery vacuum pump
Measurement bypass, has set gradually electrically-controlled valve F2, compressor, gas cylinder, electronic control pressure reducing valve, automatically controlled flow control valve.In gas cylinder
A pressure gauge is respectively provided with after upper, electronic control pressure reducing valve and after flowmeter.In order to periodically discharge what may be gathered in gas cylinder
Liquid, is also provided with a manual drain valve in the bottom of gas cylinder.The oil gas of the other end access fuel charger of measurement bypass is returned
Below closed tube line, and flowmeter and pressure gauge C are provided with behind.
In addition, in order that sunken tankers measurement when connected with air, can on tank vent pipe or it is other with it is oily
Tank top is joined directly together logical position there is provided an electrically-controlled valve F3, valve F3 connect air by a spark arrester.When implementing,
Due to the pipeline section may discharge part oil gas, therefore preferably try one's best and be arranged on the top of blast pipe.
Gas station for being mounted with oil gas after-treatment device, in order to avoid oil gas after-treatment device is brought in measurement process
Interference, should also oil gas after-treatment device air inlet install an electrically-controlled valve F4, for measurement when close oil gas post processing
The air inlet of device.
As shown in Fig. 2 controller be the present invention control core, for realize instrumented data collection, control valve switch,
Control the functions such as oiling electromechanical source, data storage analysis, generation warning message.
When implementing, controller can be using conventional Industry Control element, such as industrial computer, programmable logic controller (PLC).
Pressure gauge, the signal of flowmeter can be linked into the analog input port of controller by the analog signal of standard
On.
The control signal of electrically-controlled valve, the start stop signal of compressor and fuel charger power control signal can be connect by relay
Enter onto the switch contact of controller.
Electronic control pressure reducing valve, flow control valve are accessible on the analog output terminal of controller.
Because gas recovery system for oil liquid resistance test needs are continued for some time, therefore, in order to avoid right in measurement process
The daily business of gas station is impacted, and system design is measured automatically for the low peak period in oiling.
Controller, can 24 hours uninterrupted monitoring fuel chargers by monitoring the flow signal of flowmeter in petroleum vapor recovery pipeline
Oiling situation, so as to draw the daily volume read-out less period.In the less low peak period of these volume read-outs, the present invention will
Automatically measure.Detailed process is as follows：
First, the measurement error brought in order to avoid being refueled in measurement process, controller sends signal and added all first
Oil machine dump.
Second, if gas station is mounted with oil gas after-treatment device, first to close the control valve of oil gas after-treatment device entrance
F4, so that oil gas after-treatment device is shut down；If gas station does not install oil gas after-treatment device, this operation need not be carried out.
3rd, the electrically-controlled valve F1 and the automatically controlled flow control valve before flowmeter closed before oil-gas recovery vacuum pump, it is automatically controlled to subtract
Pressure valve and valve F3 are remained off, successively opening valve F2, compressor, now in the presence of compressor, oil storage tank memory storage
Oil gas will be filled into gas cylinder, pressure gauge A signal reflects the gas pressure in gas cylinder, when monitoring control devices to pressure
When the signal of power Table A has arrived setting value, close compressor, valve F2 successively.
4th, electrically-controlled valve 3 is opened, oil tank is connected with air, controller can judge current by pressure gauge C signal
The pressure value of oil tank.After tank pressure it is stable atmospheric pressure for a period of time after, you can start liquid resistance measurement.
5th, controller sends signal and opens electronic control pressure reducing valve and flow control valve, is fed back and adjusted by pressure gauge B signal
The aperture of economize on electricity control pressure-reducing valve, makes pressure gauge B numerical value be held near 35kPa；Pass through the signal feedback regulation electricity of flowmeter
The aperture of flow control adjustable valve, makes the flow of gas be kept for 45 seconds or so at 18 liters/min, and controller can be after flow be kept for 30 seconds
Pressure gauge C numerical value is read, is the liquid resistent value P1 under the flow；Similarly, make gas flow successively at 28 liters/min, 38 liters/min
Kept for 45 seconds or so, controller can read pressure gauge C numerical value after flow is kept for 30 seconds, be the liquid resistent value under the flow
P2、P3。
6th, P1, P2, P3 for measuring are compared respectively at 40Pa, 90Pa, 155Pa specified in GB20952, i.e.,
It can learn whether liquid resistance is qualified.If measured value is more than regulation liquid resistance, as unqualified.
7th, after being measured, controller sends instruction and progressively drives big electronic control pressure reducing valve and automatically controlled flow control valve, will store
Gas in gas cylinder is unloaded to the greatest extent, and electronic control pressure reducing valve, Flow-rate adjustment can be closed when pressure gauge A signal is returned near atmospheric pressure
Valve, valve F1, valve F3 and opening valve F4, opening oiling electromechanical source, make gas station enter business status again.
【Comparative example】
At present, the detection of the liquid resistance of oil gas recovery system of gas station is completely dependent on artificial progress, and detection every time need to carry 40L
(12MPa) nitrogen cylinder one (1*0.2m, 50kg), liquid resistance tester, pressure/vacuum etc., because instrument is more, one during detection
As need many people to coordinate to carry out.
Every time during detection, in order to prevent from interfering, it is necessary to gas station is closed, open oil tank petroleum vapor recovery mouthful and
Fuel charger bottom basin.The components such as nitrogen cylinder, tester, pressure/vacuum are connected to the threeway inspection on oiling petroleum vapor recovery standpipe
Survey joint.
Nitrogen cylinder is then turned on, setting nitrogen output pressure is 35kPa.Respectively regulation nitrogen flow be 18,28,38L/
Min, the corresponding liquid resistance of 3 flows of detection.Before pressure gauge numerical value is read, the nitrogen flow stable time should be greater than 30s.
If there is any 1 to be more than maximum pressure limit value specified in GB20952-2007 in 3 liquid resistance detected values, plus
The resistance detection of petrol station liquid is unqualified.
It is not difficult to find out from above-mentioned detection process, liquid resistance detection preparation routine is complicated, and the duration is longer, and detection process
It is general on gas station's operating capacity larger daytime, cause detection every time not only to take time and effort, and made to the daily business of gas station
Into large effect.Further, since relying on artificial operation and reading, liquid resistance detection is often due to differences such as equipment, personnel
Cause final testing result difference；The interval manually inspected by random samples is often longer, short then one month, even 1 year long then half a year,
Even if liquid resistance there is a problem, it also can not in time find, ultimately result in petroleum vapor recovery efficiency and have a greatly reduced quality.
Obviously, a kind of gas station's oiling petroleum vapor recovery liquid resistance automatic monitoring system that the present invention is developed, the system can add
Oily low peak period (being usually night) is automatic to detect whether the liquid resistance of gas station's oiling gas recovery system for oil is up to standard according to standardization program,
It is easy to use, without manual intervention, a large amount of manpower and materials can be saved, and gas station's business is had little to no effect, automate
Degree is high, the liquid resistance problem of oil gas recovery system of gas station can be found in time, it is ensured that the operational efficiency of gas recovery system for oil, taken
Obtained preferable green technology effect.
Claims (6)
1. a kind of gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method, along oil recovery on the petroleum vapor recovery pipeline of fuel charger
Valve F1, petroleum vapor recovery pump, flowmeter, pressure gauge C are sequentially provided with the flow direction of gas, pressure gauge C is connected with oil tank, in oil gas
Reclaim pump discharge to bypass provided with measurement, valve F2, compressor, gas cylinder, pressure-reducing valve, Flow-rate adjustment are set gradually in measurement bypass
Valve, Flow-rate adjustment valve outlet is connected with the petroleum vapor recovery pipeline before flowmeter, rear on gas cylinder to set after pressure gauge A, pressure-reducing valve
There is provided on pressure gauge B, tank vent pipe or it is other be joined directly together logical pipeline with oil tank top and be connected with valve F3 one end, valve F3
The other end is connected with spark arrester, spark arrester connection air；Pressure gauge A, pressure gauge B, pressure gauge C, the signal of flowmeter pass through letter
Number line is connected with the analog input channel of controller, and valve F1, valve F2, valve F3, compressor, the signal of oiling electromechanical source pass through signal
Line is connected with one end of respective relay, and the other end of respective relay is opened by signal wire and respective on controller
Pass amount contact is connected, and the analog output channel of controller is connected with pressure-reducing valve, flow control valve respectively by signal wire；Pass through control
Device processed realizes that instrumented data collection, control valve switch, control oiling electromechanical source, data storage are analyzed, generate warning message
Whether up to standard function, can hinder in the liquid of oiling low peak period automatic detection gas station's oiling gas recovery system for oil.
2. gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterised in that the air storage
Bottom of bottle portion is provided with manual drain valve.
3. gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterised in that for installing
The gas station of oil gas after-treatment device, sets valve F4, valve F4 signal passes through signal in the air inlet of oil gas after-treatment device
Line is connected with one end of relay, and the other end of relay is connected by signal wire with the switching value contact on controller.
4. gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterised in that the oil tank
On breather pipe or other and oil tank top is joined directly together on logical pipeline and is additionally provided with pressure/vacuum.
5. gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterised in that the valve F1,
Valve F2, valve F3, valve F4 are electric control valve.
6. gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method according to claim 1, it is characterised in that controller is sent out
The number of delivering letters opens electronic control pressure reducing valve and flow control valve, by the aperture of pressure gauge B signal feedback regulation electronic control pressure reducing valve, makes
Pressure gauge B numerical value is held in 35kPa；By the aperture of the automatically controlled flow control valve of signal feedback regulation of flowmeter, make gas
Flow successively 18 liters/min, 28 liters/min, 38 liters/min respectively keep 45 seconds, controller flow keep 30 seconds after read pressure
Power table C numerical value, liquid resistent value P1, P2, P3 as under corresponding discharge；By P1, P2, P3 for measuring respectively with being advised in GB20952
Fixed 40Pa, 90Pa, 155Pa is compared, as unqualified if measured value is more than regulation liquid resistance, conversely, being qualified.
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| CN201510495937.5A CN105110283B (en) | 2015-08-13 | 2015-08-13 | Gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method |
Applications Claiming Priority (1)
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| CN201510495937.5A CN105110283B (en) | 2015-08-13 | 2015-08-13 | Gas station's oiling petroleum vapor recovery liquid hinders automatic monitoring method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107555388B (en) * | 2017-09-27 | 2023-11-03 | 北京恒合信业技术股份有限公司 | Device, method, equipment and monitoring system for detecting hydraulic resistance of oil gas recovery pipeline |
| CN107697879B (en) * | 2017-09-27 | 2024-01-26 | 北京恒合信业技术股份有限公司 | Oil gas recovery on-line monitoring system of filling station |
| 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 |
| CN110510566B (en) * | 2019-09-03 | 2020-11-20 | 河南英高能源科技有限公司 | Refuel flow control device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2737717B1 (en) * | 1995-08-10 | 1997-09-12 | Schlumberger Ind Sa | PROCESS FOR RECOVERING VAPOR EMITTED FROM A LIQUID DELIVERY SYSTEM |
| CN1994858A (en) * | 2006-11-24 | 2007-07-11 | 江苏工业学院 | Oil gas recovery method and device of fuel station |
| CN101995341A (en) * | 2009-08-19 | 2011-03-30 | 中机生产力促进中心 | Method and instrument for detecting oil gas recovery system of gas station |
| CN101691199B (en) * | 2009-11-03 | 2012-12-19 | 中国石油化工股份有限公司 | On-line monitoring system for oil gas recovery of gas station |
| CN102445299A (en) * | 2011-08-30 | 2012-05-09 | 中国石油化工股份有限公司 | Closed fluid-resistance comprehensive tester for oil gas recovery system of gas station |
| CN202351065U (en) * | 2011-11-29 | 2012-07-25 | 青岛海纳光电环保有限公司 | Oil gas recovery system detector |
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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. |