CN212151601U - Mobile oil gas recovery on-line detector and detection system for gas station - Google Patents
Mobile oil gas recovery on-line detector and detection system for gas station Download PDFInfo
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- CN212151601U CN212151601U CN202020498992.6U CN202020498992U CN212151601U CN 212151601 U CN212151601 U CN 212151601U CN 202020498992 U CN202020498992 U CN 202020498992U CN 212151601 U CN212151601 U CN 212151601U
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Abstract
The utility model provides a mobile oil gas recovery online detector and a detection system of a gas station, wherein the detector comprises a metering pump, which is provided with an air inlet, an air outlet and an output turntable, recovered oil gas enters the metering pump from the air inlet and is discharged from the air outlet, and the recovered oil gas drives the output turntable to rotate when passing through the metering pump; the signal detection device is used for detecting a signal generated by the rotation of the turntable; the microprocessor is used for receiving the signals transmitted by the signal detection device and counting the rotating turns of the output turntable to form measurement data; the data output module is connected with the microprocessor, adds the measured data of the metering pump into the oil station code and time by the microprocessor and sends the data to the background data processing center; and the direct current power supply supplies power to each part of circuit. The method does not need manual input, is intelligent and automatic, is not easy to make mistakes in data, and meets the supervision requirements of government supervision departments.
Description
Technical Field
The utility model relates to a portable vapor recovery system on-line measuring appearance and detecting system of filling station.
Background
With the rapid development of national economy and the continuous improvement of the living standard of people, the requirements of people on the quality of life are higher and higher, especially in the aspects related to the environmental protection and health problems. As is known, the volatilization of oil gas in a gas station not only pollutes the ambient air, but also is harmful to human bodies, so in the environmental protection problem of the present society, it is very important to keep the effective operation of the oil gas recovery system of the gas station, and the simplest and most convincing work is to keep the steam-liquid ratio, the tightness and the liquid resistance data of the oil gas recovery system of the gas station according with the requirements.
However, in the prior art, the function of the detector for the oil gas recovery system of the gas station is not perfect, such as the following patent numbers: 201720888637.8, patent name: the utility model provides a gas-liquid ratio detector's utility model patent, the detection that can only realize gas recovery system's of filling station vapour-liquid ratio among this technical scheme again, exist as follows not enoughly:
1) the electronic display has no function of actively outputting data, can only read the reading on the screen film of the electronic display and needs to be manually input into a computer, is not intelligent and automatic enough, is easy to make mistakes during input, and is different from the mode of the electronic display by government supervision departments;
2) the gas station oil gas recovery system can not realize the detection of the tightness and the liquid resistance, so that the gas station oil gas recovery system has single function and incomplete detection results.
3) The current online detection system for oil gas recovery is well maintained, each oil gun is required to be provided with an anti-explosion gas flow meter to detect gas recovery data, the anti-explosion gas flow meters on the market are generally about 14000 yuan, 6 anti-explosion gas flow meters are equivalent to the price of one oil gun, the oil gun needs to be disassembled to install the 6 anti-explosion gas flow meters in the oil gun, the detection signals of the anti-explosion gas flow meters are connected to a control circuit board of the oil gun, so that the oil filling data and the recovered gas data are sent to a background computer of the oil filling station together to calculate the gas-liquid ratio, and whether the oil gun meets the supervision requirements or not is known through detecting the gas-liquid ratio. At present, the on-line monitoring of the current installation does not consider the performance of a monitored object, the equipment configuration is excessive, the installation and maintenance costs are expensive, no benefit is generated, and the method is a resource waste.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable vapor recovery system on-line measuring appearance and detecting system of filling station, solve the detector that is used for filling station vapor recovery system among the prior art and only can read the reading on the screen membrane of electronic display ware and need enter the computer by hand, intelligent and automatic inadequately, make mistakes easily when entering, government supervisory authority is to the different technical problem of this kind of mode.
The utility model discloses a portable vapor recovery system online detector and detecting system of filling station is provided, solve the problem that the function of the portable vapor recovery system online detector of filling station can not detect atmospheric pressure among the prior art.
The technical scheme of the utility model is realized like this:
on-line detector of portable vapor recovery system of filling station, its characterized in that: it includes:
the metering pump is provided with an air inlet, an air outlet and an output rotary table, the recovered oil gas enters the metering pump from the air inlet and is discharged from the air outlet, and the recovered oil gas flow drives the output rotary table to rotate when passing through the metering pump;
the signal detection device is used for detecting a signal generated by the rotation of the turntable;
the microprocessor is used for receiving the signals transmitted by the signal detection device and counting the rotating turns of the output turntable to form measurement data;
the data output module is connected with the microprocessor, and adds the measured data of the metering pump into the oil station code and time by the microprocessor and sends the data out;
and the direct current power supply supplies power to each part of circuit.
The data output module is a wireless communication module or a wired communication module.
The wireless communication module is a mobile phone communication module, a Bluetooth communication module or a WIFI communication module.
The wired communication module is a serial communication module.
The microprocessor is also connected with an electronic barometer which measures the air pressure in the metering pump, transmits the measured air pressure data to the microprocessor and transmits the measured air pressure data to the microprocessor through the data output module.
The electronic barometer is communicated with the metering pump through the air duct.
The signal detection device comprises a gear transmission group, an electromagnetic pulse generator and an electromagnetic pulse detector, wherein the output turntable drives the electromagnetic pulse generator to rotate through the gear transmission group, and the electromagnetic pulse detector is magnetically coupled with the electromagnetic pulse generator and outputs an electromagnetic pulse signal to the microprocessor.
The microprocessor is also connected with a setting button, the setting button sends an instruction to the microprocessor, and the metering pump is a membrane metering pump.
The metering pump, the gear transmission set, the electromagnetic pulse generator, the electromagnetic pulse detector, the electronic barometer, the microprocessor, the data output module, the direct current power supply and the air guide tube are all arranged in a case.
The direct-current power supply adopts a dry battery or a button battery, an electronic equipment closed bin is further arranged in the case, an electromagnetic pulse detector, a microprocessor, an electronic barometer, a data output module, an air duct and a direct-current power supply are arranged in the electronic equipment closed bin, the electromagnetic pulse generator comprises a turntable and a magnet arranged on the turntable, the turntable is arranged on an output shaft of the gear transmission set, and the electromagnetic pulse detector can adopt a Hall sensing IC.
Oil gas recovery on-line measuring system, its characterized in that: it includes: the detection software module is installed in the oil station management system, the oil station management system is installed in a computer system of the oil station, and the detection software module reads the oil station code number, the oil gun number, the time and the oil filling quantity of the monitored oil filling gun during oil gas recovery detection to form an oil filling data record A and then sends the oil filling data record A to a specified background data processing center; the mobile oil gas recovery online detector is externally arranged on the oiling machine, is connected to a monitored oiling gun, acquires the oil station code, time, gas return amount and highest flow rate to form a gas return data record B during oil gas recovery detection, and then sends the gas return data record B to a specified background data processing center; the background data processing center is used for obtaining the refueling quantity and the return air quantity of the monitored refueling gun by matching the refueling data record A and the return air data record B by taking the oil station code and time as correlation, and generating the gas-liquid ratio of the monitored refueling gun; the time refers to the opening time or the stopping time of the detected fuel nozzle; the computer system of the gas station is in wired or wireless connection communication with the background data processing center, and the mobile oil gas recovery online detector is in wired or wireless connection communication with the background data processing center.
Compared with the prior art, the method has the following advantages:
(1) on-line detector is retrieved to filling station's portable vapor recovery system includes: the metering pump is provided with an air inlet, an air outlet and an output rotary table, the recovered oil gas enters the metering pump from the air inlet and is discharged from the air outlet, and the recovered oil gas flow drives the output rotary table to rotate when passing through the metering pump; the signal detection device is used for detecting a signal generated by the rotation of the turntable; the microprocessor is used for receiving the signals transmitted by the signal detection device and counting the rotating turns of the output turntable to form measurement data; the data output module is connected with the microprocessor and sends out the measurement data of the metering pump by the microprocessor; and the direct current power supply supplies power to each part of circuit. The oil station code and time are added into measured data by the data output module, the measured data are directly conveyed out, manual entry is not needed, the intelligent degree and the automation degree are high, the data are not prone to error, and the supervision requirements of government supervision departments are met.
(2) The utility model discloses an oil gas recovery on-line measuring system need not to reform transform or transform fewly oil station equipment, facility, and expense and risk are reformed transform to the reduction by a wide margin, adopt portable oil gas recovery on-line measuring appearance, realize the monitoring sharing of detector, and one set of oil gas recovery detector equipment serves many oil guns, and data intelligence is reliable, avoids excessive configuration equipment, practices thrift the cost by a wide margin.
(3) Other advantages of the invention are described in detail in the examples section.
Drawings
FIG. 1 is a schematic block diagram of the principles provided in the first embodiment;
FIG. 2 is a schematic perspective view provided in accordance with a first embodiment;
FIG. 3 is a front view of the first embodiment;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a front view of an electromagnetic pulse generator according to an embodiment of the present invention;
fig. 6 is a schematic block diagram of the second embodiment of the present invention;
fig. 7 is a front view of a detector provided in the second embodiment of the present invention;
FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;
fig. 9 is a perspective view of a second embodiment of the present invention;
fig. 10 is a schematic diagram of a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 5, the utility model relates to a gas-liquid ratio detector for filling station's oil gas recovery system, it includes measuring pump 1, gear drive group 3, electromagnetic pulse generator 4, electromagnetic pulse detector 5, microprocessor, electronic display 2 and DC power supply 9, DC power supply 9 is electromagnetic pulse detector 5, microprocessor and the power supply of electronic display 2, measuring pump 1 has the air inlet, gas outlet and output carousel 14, output carousel 14 drives electromagnetic pulse generator 4 through gear drive group 3 and rotates, electromagnetic pulse detector 5 closes and exports electromagnetic pulse signal to microprocessor with electromagnetic pulse generator 4 magnetic coupling, microprocessor shows with digital form on electronic display 2 with the measurement flow, moreover, the steam generator is simple in structure, low price, convenient operation and use. The microprocessor is a singlechip MCU and is used for carrying out electronic counting on the electromagnetic pulse signals output by the electromagnetic pulse generator 4.
The microprocessor is also electrically connected with a setting button, and the setting button sends an instruction to the microprocessor. The setting button comprises a function button 6 and a zero clearing or adjusting button 7, and the zero clearing or adjusting button 7 is used for carrying out zero clearing operation on the instruction of the microprocessor and enabling the reading to be zero; the function button 6 gives the microprocessor instructions to switch the reading of the electronic display 2, and the value of the instantaneous flow rate is switched by the value of the display flow. The function button 6 gives the microprocessor instruction to switch the reading of the electronic display, and the numerical value of the instantaneous flow rate is switched by the numerical value of the display flow, so that the use is convenient and the operation is simple. The utility model can comprehensively test the oil gas instantaneous flow rate of the gas-liquid ratio of the oil gas recovery system while testing the gas-liquid ratio oil gas circulation accumulated volume of the oil gas recovery system; the interface operation of the detector is simpler and faster, the metering precision is higher, and the repeatability error is smaller; the accessories are simple and cheap, and can be more widely equipped in various industries; the function button 6 and the zero clearing or adjusting button 7 are arranged on a panel 13 of the electronic display 2, and the direct current power supply 9 adopts a dry battery or a button battery.
The metering pump 1 is a membrane metering pump, and is low in cost and reliable in operation.
The metering pump 1, the gear transmission group 3, the electromagnetic pulse generator 4, the electromagnetic pulse detector 5, the microprocessor and the direct current power supply 9 are all installed in a case 12, a hole is dug in the side wall of the case 12 to expose the electronic display 2 so as to display a reading, a case air inlet 10 and a case air outlet joint 11 are arranged on the case 12, the case air inlet 10 is communicated with an air inlet of the metering pump 1, and the case air outlet joint 11 is communicated with an air outlet of the metering pump 1.
The electronic equipment closed bin 8 is further arranged in the case 12, the electromagnetic pulse detector 5, the microprocessor and the direct current power supply 9 are installed in the electronic equipment closed bin 8, the rear portion of the electronic display 2 is embedded into the electronic equipment closed bin 8, the electronic equipment closed bin 8 is exposed out of the front portion of the electronic display 2, the power utilization portion is isolated, the explosion-proof function is achieved, and equipment safety is improved.
The electromagnetic pulse detector 5, the microprocessor, the electronic display 2 and the setting button are integrated together to form an integrated module, so that the size is small, the structure is compact, the integration level is high, the modularized installation is realized, and the product reliability is improved.
The electromagnetic pulse generator 4 comprises a turntable 16 and a magnet 15 arranged on the turntable 16, the turntable 16 is arranged on an output shaft of the gear transmission group 3, and the electromagnetic pulse detector 5 can adopt a hall sensing IC, and has simple structure and convenient implementation. 3 magnets 15 which are 120 degrees apart are adopted, and an inner membrane in the membrane type metering pump 1 is pushed by flowing oil gas to rotate so as to drive the gear transmission set 3 to rotate; after one circle of rotation, the volume of the gas flowing through the gas chamber is constant, meanwhile, the gear transmission group 3 drives the electromagnetic pulse generator 4 to rotate 22.425 circles, and the electromagnetic pulse detector 5 receives 67 electromagnetic pulse signals.
When the metering pump 1 starts to work, the gear transmission set 3 is driven to act, the gear transmission set 3 has double functions of transmission and proportion adjustment, and the diaphragm type metering pump, the gear transmission set and the electromagnetic pulse detector are combined to adjust the transmission proportion, so that the detection precision is improved, the structure is simple, the size is compact, and the cost is low.
The principle of the utility model is that: when the device works, the air inlet 10 of the case is connected to an oiling gun of an oiling machine through a pipeline, when the membrane type metering pump 1 is pushed to rotate by flowing oil gas, the output rotary table 14 drives the electromagnetic pulse generator 4 to rotate through the gear transmission set 3, the volume of the flowing gas in the air chamber of the membrane type metering pump 1 is constant, the electromagnetic pulse generator 4 generates an electromagnetic signal, the electromagnetic pulse detector 5 is magnetically coupled with the electromagnetic pulse generator 4 and outputs the electromagnetic pulse signal to the microprocessor, and the microprocessor displays the metering flow on the electronic display 2 in a digital mode. The utility model discloses a detector can comprehensive detection and the relevant parameter of oil gas recovery system gas-liquid ratio performance when the test gas-liquid is than the cumulative volume of oil gas circulation. The microprocessor can adjust the error coefficient of the input signal to enable the counting to be more accurate, the error coefficient can be adjusted from 0.001 to 9.999, the number of times of electromagnetic pulses received by the electromagnetic pulse detector 5 is displayed on the electronic display 2 and multiplied by the volume of the air chamber of the membrane type metering pump 1 and the error coefficient to obtain the accumulated volume of oil gas passing through the membrane type metering pump 1, and the microprocessor can also calculate the instantaneous flow rate of the oil gas through the pulse time difference of the electromagnetic signals and display the instantaneous flow rate of the oil gas on the electronic display 2. The utility model discloses the principle is simple, and the structure is simplified, and is with low costs, and it is high to detect the precision, and the operation is simple and easy.
Example two:
the present embodiment is an improvement of the detector based on the first embodiment, and the improvement point is that the electronic display 2 of the first embodiment is deleted, and the data output module 19 and the electronic barometer 17 are added, and the specific structure is as follows:
as shown in fig. 6, 7, 8 and 9, a mobile online detector for oil and gas recovery of a gas station is characterized in that: it includes:
the metering pump 1 is provided with an air inlet 10, an air outlet 11 and an output rotary disc 14, recovered oil gas enters the metering pump 1 from the air inlet 10 and is discharged from the air outlet 11, and the recovered oil gas drives the output rotary disc 14 to rotate when passing through the metering pump 1;
a signal detection device for detecting the signal of the rotation of the rotary disc 14;
a microprocessor for receiving the signal transmitted by the signal detection device and counting the number of turns of the output turntable 14 to form measurement data;
the data output module is connected with the microprocessor, and adds the measured data of the metering pump 1 into the oil station code and time by the microprocessor and sends the data out; the fueling station code is a unique identification code for the fueling station, and the time refers to the opening time or the stopping time of the detected fueling gun.
And the direct current power supply supplies power to each part of circuit.
Measured data are directly conveyed out by the data output module without manual input, so that the intelligent degree and the automation degree are high, the data are not easy to make mistakes, and the supervision requirements of government supervision departments are met.
The data output module is a wireless communication module or a wired communication module. The wireless communication module can be a mobile phone communication module, a Bluetooth communication module or a WIFI communication module. Data output is more convenient.
The wired communication module can be a serial communication module, is connected in a wired mode, is stable in communication, and is fast in real-time information transmission.
The signal detection device comprises a gear transmission group, an electromagnetic pulse generator and an electromagnetic pulse detector, wherein the output turntable drives the electromagnetic pulse generator to rotate through the gear transmission group, and the electromagnetic pulse detector is magnetically coupled with the electromagnetic pulse generator and outputs an electromagnetic pulse signal to the microprocessor.
The microprocessor is also connected with an electronic barometer which measures the air pressure in the metering pump, transmits the measured air pressure data to the microprocessor and transmits the measured air pressure data to the microprocessor through the data output module. The electronic barometer is additionally arranged to better monitor the pressure in the oil tank and the pipeline and judge whether the system tightness and the liquid resistance of the return gas pipeline are qualified or not according to the pressure change, the liquid resistance detection is the liquid resistance condition of the oil gun obtained by comparing the refueling flow rate with the pressure change condition, and the refueling flow rate is detected by the refueling machine; the airtightness detection is realized by accessing pressure monitoring, intelligently analyzing the airtightness by combining the storage capacity of the oil tank through pressure change, is simple to control and convenient to use, can realize measurement, analysis and transmission of key operating parameters (such as recovered gas quantity, oil filling quantity, oil tank and pipeline pressure) of the oil gas recovery system, calculates indexes such as A/L (analog/digital), airtightness and liquid resistance, and carries out real-time monitoring, so that the detection function of the detector is more perfect, and the detection is more comprehensive.
As shown in fig. 7, the electronic barometer 17 communicates with the metering pump 1 via a gas line 18. The electronic barometer 17 is electrically connected with the microprocessor, and the barometer 17 is additionally arranged to better monitor the pressure in the oil tank and the pipeline.
The microprocessor is also electrically connected with a data output module 19, and the data output module 19 is used for realizing the communication connection between the microprocessor and the background terminal. The data output module 19 and the electronic barometer 17 are also installed inside the electronic equipment enclosure 8 inside the cabinet 12.
The signal detection device comprises a gear transmission group 3, an electromagnetic pulse generator 4 and an electromagnetic pulse detector 5, wherein an output turntable 14 detects and outputs an electromagnetic pulse signal to a microprocessor through the gear transmission group 3, the electromagnetic pulse generator 4 and the electromagnetic pulse detector 5.
The microprocessor is also connected with a setting button, the setting button sends an instruction to the microprocessor, and the metering pump is a membrane metering pump.
The metering pump 1, the gear transmission group 3, the electromagnetic pulse generator 4, the electromagnetic pulse detector 5, the microprocessor, the electronic air pressure 17, the air duct 18, the data output module 19 and the direct current power supply are all arranged in a case 2.
The direct current power supply adopts dry batteries or button batteries, an electronic equipment closed bin is further arranged in the case, the electromagnetic pulse detector, the microprocessor, the data output module and the direct current power supply are installed in the electronic equipment closed bin, the electromagnetic pulse generator comprises a turntable and a magnet installed on the turntable, the turntable is installed on an output shaft of the gear transmission set, and the electromagnetic pulse detector can adopt a Hall sensing IC.
Preferably, a data transmission port 20 and a power indicator 21 are arranged on the front surface of the case 12, the data transmission port 20 is electrically connected with the data output module 19, and the data transmission port 20 can be connected with a background terminal through a wire, so that connection using a data line is conveniently realized.
Example three:
as shown in fig. 10, the oil gas recovery on-line detection system is characterized in that: it includes:
the detection software module is installed in the oil station management system, the oil station management system is installed in a computer system of the oil station, and the detection software module reads the oil station code number, the oil gun number, the time and the oil filling quantity of the monitored oil filling gun during oil gas recovery detection to form an oil filling data record A and then sends the oil filling data record A to a specified background data processing center;
the mobile online oil gas recovery detector is the mobile online oil gas recovery detector of the second embodiment and is externally arranged on the oiling machine, the mobile online oil gas recovery detector is connected to a monitored oiling gun, and the mobile online oil gas recovery detector acquires the code number, time, gas return amount and highest flow rate of an oil station and forms a gas return data record B during oil gas recovery detection and then sends the gas return data record B to a specified background data processing center;
the background data processing center is used for obtaining the refueling quantity and the return air quantity of the monitored refueling gun by matching the refueling data record A and the return air data record B by taking the oil station code and time as correlation, and generating the gas-liquid ratio of the monitored refueling gun;
the time refers to the opening time or the stopping time of the detected fuel nozzle;
the computer system of the gas station is in wired or wireless connection communication with the background data processing center, and the mobile oil gas recovery online detector is in wired or wireless connection communication with the background data processing center.
It has the following advantages: firstly, information of an oiling machine and information of an oil gas recovery detector are networked through software setting by utilizing the wireless internet of things technical principle, and a detection result is calculated through data analysis of a background data processing center; and the oil station equipment and facilities do not need to be modified or are rarely modified, so that the modification cost and risk are greatly reduced. And secondly, the device is mobile and portable, the monitoring and sharing of the detector are realized, one set of mobile oil gas recovery online detector equipment serves a plurality of oil guns, and the data is intelligent and reliable. Regular and irregular monitoring is carried out according to the performance requirements of the equipment, excessive monitoring is avoided, an anti-explosion gas flowmeter is not required to be installed on a gas return pipe of each oil gun, and a data acquisition module is not required to be installed on the oiling machine, so that the cost is greatly saved. Thirdly, the structure is simple, and the operation is carried out by one key. The simple detection method of the mobile online oil gas recovery detector utilizes the working condition pressure of the oiling machine to realize high-pressure-free nitrogen detection, has low requirement on operation technology and is convenient to popularize and promote. And fourthly, the intelligent data management system is combined with the qualified oil gas recovery detector, the accuracy is guaranteed, and the instrument can be used as a government administration processing basis. And fifthly, system software is intelligent, data is real and reliable, small programs, apps, web pages and other software can be applied and managed, supervision is visual, enterprise management is facilitated, and government supervision is facilitated.
The backstage data processing center is connected with a mobile phone and an oil station management system in a wired or wireless mode, and the backstage data processing center sends the monitored gas-liquid ratio of the fuel truck nozzle to the mobile phone, so that monitoring is facilitated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (11)
1. On-line detector of portable vapor recovery system of filling station, its characterized in that: it includes:
the metering pump is provided with an air inlet, an air outlet and an output rotary table, the recovered oil gas enters the metering pump from the air inlet and is discharged from the air outlet, and the recovered oil gas flow drives the output rotary table to rotate when passing through the metering pump;
the signal detection device is used for detecting a signal generated by the rotation of the turntable;
the microprocessor is used for receiving the signals transmitted by the signal detection device and counting the rotating turns of the output turntable to form measurement data;
the data output module is connected with the microprocessor, adds the measured data of the metering pump into the oil station code, the starting time or the stopping time by the microprocessor and sends the data out;
and the direct current power supply supplies power to each part of circuit.
2. The mobile online detector for oil gas recovery of gas station of claim 1, characterized in that: the data output module is a wired communication module or a wireless communication module.
3. The mobile online detector for oil gas recovery of gas station of claim 2, characterized in that: the wireless communication module is a mobile phone communication module, a Bluetooth communication module or a WIFI communication module.
4. The mobile online detector for oil gas recovery of gas station of claim 1, characterized in that: the wired communication module is a serial communication module.
5. The mobile online detector for oil and gas recovery of a gasoline station as claimed in claim 1, 2, 3 or 4, wherein: the microprocessor is also connected with an electronic barometer which measures the air pressure in the metering pump and transmits the measured air pressure data to the microprocessor, and the measured air pressure data is transmitted out by the microprocessor through the data output module.
6. The mobile online detector for oil gas recovery of gas station of claim 5, characterized in that: the electronic barometer is communicated with the metering pump through the air duct.
7. The mobile online detector for oil gas recovery of gas station of claim 6, characterized in that: the signal detection device comprises a gear transmission group, an electromagnetic pulse generator and an electromagnetic pulse detector, the output turntable drives the electromagnetic pulse generator to rotate through the gear transmission group, and the electromagnetic pulse detector is magnetically coupled with the electromagnetic pulse generator and outputs an electromagnetic pulse signal to the microprocessor.
8. The mobile online detector for oil gas recovery of gas station of claim 7, characterized in that: the microprocessor is also connected with a setting button, the setting button sends an instruction to the microprocessor, and the metering pump is a membrane type metering pump.
9. The mobile online detector for oil gas recovery of gas station of claim 8, wherein: the metering pump, the gear transmission set, the electromagnetic pulse generator, the electromagnetic pulse detector, the microprocessor, the data output module, the direct current power supply and the air guide tube are all arranged in a case.
10. The mobile online detector for oil gas recovery of gas station of claim 9, characterized in that: the direct current power supply adopts dry batteries or button batteries, an electronic equipment closed bin is further arranged in the case, the electromagnetic pulse detector, the microprocessor, the data output module and the direct current power supply are installed in the electronic equipment closed bin, the electromagnetic pulse generator comprises a turntable and a magnet installed on the turntable, the turntable is installed on an output shaft of the gear transmission set, and the electromagnetic pulse detector can adopt a Hall sensing IC.
11. Oil gas recovery on-line measuring system, its characterized in that: it includes:
the detection software module is installed in the oil station management system, the oil station management system is installed in a computer system of the oil station, and the detection software module reads the oil station code number, the oil gun number, the time and the oil filling quantity of the monitored oil filling gun during oil gas recovery detection to form an oil filling data record A and then sends the oil filling data record A to a specified background data processing center;
a mobile online detector for oil gas recovery, which is the mobile online detector for oil gas recovery of claims 1 to 10, and is externally arranged on the oiling machine, the mobile online detector for oil gas recovery is connected to the monitored oiling gun, and the mobile online detector for oil gas recovery acquires the code, time, gas return amount and highest flow rate of an oil station and forms a gas return data record B during oil gas recovery detection, and then sends the data record B to a designated background data processing center;
the background data processing center is used for obtaining the refueling quantity and the return air quantity of the monitored refueling gun by matching the refueling data record A and the return air data record B by taking the oil station code and time as correlation, and generating the gas-liquid ratio of the monitored refueling gun;
the time refers to the opening time or the stopping time of the detected fuel nozzle;
the computer system of the gas station is in wired or wireless connection communication with the background data processing center, and the mobile oil gas recovery online detector is in wired or wireless connection communication with the background data processing center.
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