A vehicle-mounted oil and gas recovery system

Abstract

A vehicle-mounted oil and gas recovery system includes an explosion-proof box, a central control system, an oil and gas recovery unit and a generator set, wherein the oil and gas recovery unit and the generator set are both arranged in the explosion-proof box; a ventilation channel is arranged in the explosion-proof box, and a first oil and gas concentration meter is connected to the ventilation channel; the first oil and gas concentration meter is used to detect the leakage oil and gas concentration of the ventilation channel and send it to the central control system; the central control system receives the leakage oil and gas concentration sent by the first oil and gas concentration meter and displays it on the display screen of the cab. This system improves the explosion-proof safety of the vehicle-mounted oil and gas recovery unit, allowing the driver to monitor in real time whether oil and gas leakage occurs, and prevent safety accidents caused by leakage. At the same time, the central control system makes intelligent judgments on various historical monitoring data and displays them on the display screen of the cab, so that the driver can fully understand the working conditions of each component, and assist the driver to complete the oil and gas recovery work more conveniently and intelligently.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas recovery, and in particular relates to an oil and gas recovery system installed on a car and capable of real-time monitoring. Background Art

[0002] In the process of unloading oil from tank trucks and refueling from tankers, there will be a large amount of oil and gas loss in oil depots or gas stations. Most of the loss comes from the large breathing process of the tank trucks. Oil and gas leak out in large quantities through the oil tank gas pipe ports, oil tank truck ports and other locations. The leaked oil and gas will pollute the atmospheric environment on the one hand, and on the other hand, it also has major safety hazards. For this reason, existing domestic gas stations generally use fixed oil and gas recovery devices and vehicle-mounted oil and gas recovery devices installed on cars. Fixed oil and gas recovery devices occupy a large area and have high maintenance costs. If each gas station is equipped with a set of fixed oil and gas recovery devices, it is bound to cause a huge increase in investment costs; for vehicle-mounted oil and gas return devices, due to limited conditions, some cannot be installed with explosion-proof systems, and in the process of discharging and filling oil, the driver cannot monitor in real time whether the oil and gas recovery device has oil and gas leakage, and the concentration of the leakage cannot be monitored. It is easy to cause safety accidents due to the oil and gas concentration in the explosion-proof box reaching the combustion limit when the oil and gas leak. Summary of the invention

[0003] The purpose of the present invention is to design a vehicle-mounted oil and gas recovery system, which sets an explosion-proof box outside the vehicle-mounted oil and gas recovery unit, and sets multiple ventilation channels in the explosion-proof box. Through intelligent judgment and control of the central control system, and using an oil and gas concentration meter, the driver can monitor in real time whether there is oil and gas leakage in the oil and gas recovery unit and the location of the leakage. At the same time, the oil tank level meter is used to determine the amount of liquid oil stored in the oil tank of the oil and gas recovery unit, etc., to assist the driver in completing the oil and gas recovery work.

[0004] The purpose of the present invention can be achieved by adopting the following technical scheme: a vehicle-mounted oil and gas recovery system, comprising an explosion-proof box, an oil and gas recovery unit, a generator set and a central control system, wherein the oil and gas recovery unit and the generator set are both arranged in the explosion-proof box; the explosion-proof box is a rectangular box structure, which is arranged on the supporting surface of the loading vehicle, and a ventilation channel is arranged in the explosion-proof box, and the ventilation channel is correspondingly connected to a first oil and gas concentration meter, and an exhaust gas discharge port is also arranged on the explosion-proof box, and the exhaust gas discharge port is connected to a second oil and gas concentration meter;

[0005] The central control system comprises a central control module, a signal acquisition module, a data storage module and an RS-232 communication interface, and the central control system is arranged outside the explosion-proof box; the input end of the central control module is respectively connected to the output ends of the signal acquisition module and the data storage module, and the output end of the central control module is connected to the display screen in the cab of the loader through the RS-232 communication interface; the input end of the signal acquisition module is respectively connected to the oil tank level meter of the oil and gas recovery unit, the first oil and gas concentration meter on the explosion-proof box, the second oil and gas concentration meter and the power generation parameter detection device of the generator set, and the input end of the data storage module is connected to the output end of the data processing module provided by the oil delivery device or the oil loading device through a wireless network;

[0006] The oil and gas recovery unit includes an oil tank, an oil and gas recovery sealing joint, an oil unloading hose joint, an oil tank level gauge and a leakage alarm. The oil tank is provided with an oil tank level gauge, and the oil tank is respectively connected with an oil and gas recovery pipe and an oil unloading hose. The oil and gas recovery pipe is connected to the outside of the explosion-proof box and is connected with an oil and gas recovery sealing joint. The oil unloading hose is connected to the outside of the explosion-proof box and is provided with an oil unloading hose joint.

[0007] The generator set includes a generator, a power generation parameter detection device, a skid-mounted base, a shock-absorbing pad and a soundproof cabin. The generator set is connected to the oil and gas recovery unit through a cable, and the two are integrated into a skid block and are jointly arranged on the skid-mounted base; the skid-mounted base is fixed on the supporting surface of the loader; the soundproof cabin is arranged on the skid-mounted base around the generator; the shock-absorbing pad is arranged below the generator installed on the skid-mounted base; the output end of the power generation parameter detection device is connected to the input end of the central control module.

[0008] The ventilation channel in the explosion-proof box includes a vent and a ventilation fan. Multiple ventilation channels can be set. Multiple first oil and gas concentration meters are set corresponding to the ventilation channels. The first oil and gas concentration meter is installed at the ventilation fan to detect the leakage oil and gas concentration in the ventilation channel and send it to the signal acquisition module. The signal acquisition module transmits the collected information to the central control module. After receiving the information, the central control module displays the real-time leakage oil and gas concentration on the display screen in the loader cab.

[0009] The second oil and gas concentration meter sends the exhaust oil and gas concentration detected by the exhaust port to the signal acquisition module. After the central control module receives the real-time exhaust oil and gas concentration collected by the signal acquisition module, it transmits the information to the display screen in the loader cab.

[0010] The leakage alarm is connected to the output end of the central control module. When the central control module receives the leakage oil and gas concentration and judges that it is higher than the first warning value, the leakage alarm emits a first alarm sound. When the change rate of the leakage oil and gas concentration received by the central control module within a certain period of time is higher than the second warning value, the leakage alarm emits a second alarm sound.

[0011] The oil tank level gauge is used to detect the liquid level in the oil tank of the oil and gas recovery unit and send the liquid level information to the signal acquisition module. After receiving the information from the signal acquisition module, the central control module makes a judgment on whether the oil tank is drained and transmits the judgment information to the display screen in the loader cab.

[0012] The power generation parameter detection device is used to detect the power generation parameters of the generator set and send the power generation parameters to the signal acquisition module, which transmits the parameters to the central control module. After receiving the parameters, the central control module transmits the power generation parameters to the display screen in the loader cab.

[0013] The data storage module is used to store the leakage oil and gas concentration, exhaust gas oil and gas concentration, liquid level in the oil tank and power generation parameters historically received by the central control module. The data storage module stores the gas-liquid ratio of the oil pipeline of the oil discharge device or the oil loading device and the sealing parameters in the oil tank of the oil discharge device or the oil loading device obtained by the data processing module of the oil discharge device or the oil loading device through a wireless network. The central control module transmits the parameters stored in the data storage module to the display screen in the cab of the loader.

[0014] The beneficial effects of the present invention are:

[0015] (1) The vehicle-mounted oil and gas recovery unit is provided with an explosion-proof box outside, which improves the safety of the unit. At the same time, a ventilation channel is provided in the explosion-proof box. When the oil and gas recovery unit leaks during transportation and processing, the oil and gas can be discharged to the outside of the explosion-proof box in a timely manner. At the same time, the central control system and the first oil and gas concentration meter provided in the ventilation channel allow the driver to monitor in real time whether the oil and gas recovery unit has oil and gas leakage, thereby preventing safety accidents caused by the oil and gas concentration in the explosion-proof box reaching the combustion limit when the oil and gas leaks;

[0016] (2) The explosion-proof box of the invention is provided with multiple ventilation channels, and correspondingly, multiple first oil and gas concentration meters are provided, which allows the driver to judge the approximate location of the leakage according to the leakage oil and gas concentration of different ventilation channels, thus facilitating the search for the leakage point;

[0017] (3) The loader of the present invention is equipped with a generator set, which enables the oil and gas recovery unit to work in a mobile manner without being limited by the range of a fixed power source, thereby improving the flexibility and timeliness of oil and gas recovery;

[0018] (4) The present invention stores various historical monitoring data in a data storage module, and displays them on a display screen in the cab through intelligent judgment and control of the central control system, so that the driver can fully understand the working conditions of each component, and assist the driver to complete the oil and gas recovery work more conveniently and intelligently. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic front view of the structure of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0021] Figure 3 It is a monitoring schematic diagram of the central control system of the present invention;

[0022] Markings in the figure: 1. explosion-proof box, 2. oil and gas recovery unit, 3. exhaust outlet, 4. generator set, 5. ventilation fan, 6. ventilation outlet, 7. exhaust outlet, 8. central control system, 9. oil tank, 10. oil and gas recovery sealing joint, 11. oil unloading hose joint, 12. cable, 13. skid-mounted base, 14. sound insulation cabin, 15. shock pad, 16. generator, 17. loader cab, 18. central control module, 19. signal acquisition module, 20. data storage module, 21. display screen, 22. power generation parameter detection device, 23. oil tank level gauge, 24. first oil and gas concentration meter, 25. second oil and gas concentration meter, 26. leakage alarm, 27. oil discharge pump, 28. data processing module, 29. first Roots flowmeter, 30. second Roots flowmeter, 31. pressure sensor. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 , Figure 2 , Figure 3As shown, a vehicle-mounted oil and gas recovery system includes an explosion-proof box 1, a central control system 8, an oil and gas recovery unit 2 and a generator set 4, and the oil and gas recovery unit 2 and the generator set 4 are both arranged in the explosion-proof box 1; the explosion-proof box 1 is a rectangular box structure, and the explosion-proof box 1 is arranged on the supporting surface of the loading vehicle. A ventilation channel is arranged in the explosion-proof box 1, and the ventilation channel is correspondingly connected to a first oil and gas concentration meter 24. The first oil and gas concentration meter 24 is used to detect the leakage oil and gas concentration of the ventilation channel and send it to a signal acquisition module 19. The ventilation channel includes a vent 6 and a ventilation fan 5 arranged in the explosion-proof box 1. A plurality of ventilation channels can be arranged, and a plurality of first oil and gas concentration meters 24 are arranged corresponding to the ventilation channels. In the embodiment, the ventilating openings 6 of the ventilation passage are rectangular ventilating openings evenly distributed and arranged vertically, and are arranged on the front and rear side surfaces of the explosion-proof housing 1. The ventilation fan 5 is arranged on the left and right sides of the top surface of the explosion-proof housing 1. The first oil and gas concentration meter 24 is installed at the ventilation fan 5. When the ventilation fan 5 is running, the air outside the explosion-proof housing 1 is forced to enter the explosion-proof housing 1 from the ventilating openings 6, and then is discharged from the explosion-proof housing 1 outside the explosion-proof housing 1 from the ventilation fan 5, so that a good ventilation passage is formed in the explosion-proof housing 1. The explosion-proof housing 1 is also provided with an exhaust gas discharge port 3, and the exhaust gas discharge port 3 is connected to the second oil and gas concentration meter 25. The second oil and gas concentration meter 25 is used to detect the exhaust gas oil and gas concentration of the exhaust gas discharged from the exhaust port and send it to the signal acquisition module 19.

[0025] The central control system 8 includes a central control module 18, a signal acquisition module 19, a data storage module 20 and an RS-232 communication interface, and the central control system 8 is arranged outside the explosion-proof box 1; the input end of the central control module 18 is connected to the output ends of the signal acquisition module 19 and the data storage module 20 respectively, and the output end of the central control module 18 is connected to the display screen 21 in the loader cab 17 through the RS-232 communication interface; the input end of the signal acquisition module 19 is connected to the oil tank level gauge 23 of the oil and gas recovery unit 2, the first oil and gas concentration meter 24, the second oil and gas concentration meter 25 on the explosion-proof box 1 and the power generation parameter detection device 22 of the generator set 4 respectively, and the input end of the data storage module 20 is connected to the output end of the data processing module 28 of the oil delivery device or the oil loading device through a wireless network; The data storage module 20 is used to store the leakage oil and gas concentration, exhaust gas oil and gas concentration, liquid level in the oil tank and power generation parameters historically received by the central control module 18. The data storage module 20 stores the gas-liquid ratio of the oil pipeline of the oil discharge device or the oil loading device and the sealing parameters in the oil tank of the oil discharge device or the oil loading device obtained by the data processing module 28 of the oil discharge device or the oil loading device through a wireless network. In this embodiment, the wireless network can be a 2G, 3G, or 4G network. The central control module 18 transmits the parameters stored in the data storage module 20 to the display screen 21 of the loader cab 17 to provide monitoring data for the driver.

[0026] The oil and gas recovery unit 2 includes an oil tank 9, an oil and gas recovery sealing joint 10, an oil unloading hose joint 11, an oil tank level gauge 23 and a leakage alarm 26. The oil tank 9 is arranged in an explosion-proof box 1 for storing recovered liquid oil. The oil tank 9 is provided with an oil tank level gauge 23. The oil tank 9 is respectively connected with an oil and gas recovery pipe and an oil unloading hose. The oil and gas recovery pipe is connected to the outside of the explosion-proof box 1 and is connected with an oil and gas recovery sealing joint 10. The oil unloading hose is connected to the outside of the explosion-proof box 1 and is provided with an oil unloading hose joint 11. When the oil and gas recovery operation is performed, the oil and gas recovery sealing joint 10 is quickly connected to the recovery pipe on the oil discharge device or the oil loading device oil pipeline. After the oil and gas recovery is completed, the oil and gas recovery sealing joint 10 is covered with a plugging cover to prevent the escape of oil and gas.

[0027] The leakage alarm 26 is connected to the output end of the central control module 18. When the central control module 18 receives the leakage oil and gas concentration and determines that the value is higher than the first warning value, the leakage alarm emits a first alarm sound to warn the driver that there is an oil and gas leakage; when the change rate of the leakage oil and gas concentration is higher than the second warning value within a certain period of time, the leakage alarm emits a second alarm sound to warn the driver that the oil and gas leakage is increasing and all work must be stopped immediately to check for leaks and repair the unit; the second alarm sound can be the same as the first alarm sound, or it can be more harsh or more urgent than the first alarm sound.

[0028] The oil tank level gauge 23 is used to detect the liquid level in the oil tank 9 and send the liquid level information to the signal acquisition module 19. The signal acquisition module 19 transmits the information to the central control module 18. After receiving the information, the central control module 18 determines whether it is necessary to drain the oil according to the liquid level in the oil tank 9. At the same time, the oil unloading hose connector 11 connected to the oil tank 9 is connected to the oil drain pipe of the oil discharge device or the oil loading device. The central control module 18 transmits the oil drain information to the display screen 21 of the loader cab 17. The driver triggers the oil drain operation on the display screen 21 and sends an oil drain start signal to the central control module 18. After receiving the signal, the local controlled oil drain pump 27 is turned on to start draining the oil. When the liquid level in the oil tank 9 reaches the liquid level at the end of the discharge, the oil tank level gauge 23 sends the information to the central control module 18 through the signal acquisition module 19. After receiving the information, the central control module 18 makes a judgment and stops the local controlled oil drain pump 27.

[0029] The generator set 4 includes a skid-mounted base 13, a soundproof cabin 14, a shock-absorbing pad 15, a generator 16, and a power generation parameter detection device 28. The generator set 4 is connected to the oil and gas recovery unit 2 through a cable 12. The two are integrated into a skid block and are jointly arranged on the skid-mounted base 13; the skid-mounted base 13 is fixed on the support surface of the loading vehicle, such as Figure 1 , Figure 2The installation and arrangement of the unit in the position shown can make the load distribution of the loader more reasonable and the driving more stable; the shock-absorbing pad 15 is arranged below the generator 16 installed on the skid-mounted base 13 to reduce the vibration generated when the generator 16 is running; the soundproof cabin 14 is arranged on the skid-mounted base 13 around the generator 16 to reduce the working noise of the generator 16; the generator 16 supplies power to the oil and gas recovery unit 2 through the cable 12, so that the vehicle-mounted oil and gas recovery unit 2 can be operated and moved, and is not limited by the range of the fixed power supply, thereby improving the flexibility and timeliness of the oil and gas recovery work; the output end of the power generation parameter detection device 22 and the input end of the central control module 18 are connected Next, the power generation parameter detection device 22 is used to detect the power generation parameters of the generator set 4, and send the power generation parameters to the signal acquisition module 19, and the signal acquisition module 19 transmits the parameters to the central control module 18. After receiving, the central control module 18 displays the real-time and historical power generation parameters on the display screen 21 of the loader cab 17, so that the driver can monitor the working status of the generator set in real time; in this embodiment, the generator is a diesel generator, and the power generation parameter detection device 22 includes a diesel level meter, a current transformer, a voltage transformer, a tachometer, a temperature sensor, a pressure sensor, etc. The exhaust pipe of the generator set 4 extends from the exhaust port 27 (i.e., the rear of the vehicle) behind the explosion-proof box 1.

[0030] The specific operation process of the present invention is as follows: in this embodiment, the central control module 18 is a PLC control module, the signal acquisition module 19 is an AFM signal acquisition module, the leakage oil and gas concentration detected by the first oil and gas concentration meter 24, the exhaust oil and gas concentration detected by the second oil and gas concentration meter 25, the liquid level in the oil tank detected by the oil tank level meter 23, and the power generation parameters detected by the power generation parameter detection device 22 can first be collected by the signal acquisition module 19 in the form of signals, and the signal acquisition module 19 sends the collected various signals to the PLC control module through the RS-232 communication interface. The PLC control module sends various signals to the display screen 22 through the RS-232 communication interface to display various signals in real time. When oil and gas leak, the leaked oil and gas will be mixed in the air and discharged through the ventilation fan 5. At this time, the first oil and gas concentration meter 24 can detect the leaked oil and gas concentration and transmit it to the information collection module 19. The central control module 18 transmits the leaked oil and gas concentration to the display screen 21 of 17 through the information collection module 19, allowing the driver to monitor the real-time leaked oil and gas concentration, so as to determine whether oil and gas leakage occurs. Multiple first oil and gas concentration meters 24 respectively detect the leaked oil and gas concentrations of multiple ventilation channels and send them to the central control module 18 through the information collection module 19. The central control module 18 transmits the leaked oil and gas concentrations of multiple ventilation channels to the display screen 21 of 17. The degree is displayed on the display screen 21 of the loader cab 17. The driver can judge the approximate location of the leak according to the leaked oil and gas concentration of different ventilation channels, which is convenient for finding the leak point; when the oil and gas recovery unit leaks during transportation and processing, the ventilation channel on the explosion-proof box 1 can discharge the leaked oil and gas mixed with air outside the explosion-proof box 1 to avoid the accumulation of leaked oil and gas in the explosion-proof box 1 and easy explosion. At the same time, the first oil and gas concentration meter 24 and the central control module 18 detect and display the leaked oil and gas concentration in the ventilation channel in real time, allowing the driver to monitor whether the oil and gas recovery unit 2 has oil and gas leakage in real time. The second oil and gas concentration meter 25 sends the detected tail gas oil and gas concentration to the signal acquisition module 19. After receiving the tail gas oil and gas concentration value collected by the signal acquisition module 19, the central control module 18 displays it on the display screen 22 of the loader cab 17, allowing the driver to monitor in real time whether the concentration of non-methane total hydrocarbons in the exhaust gas meets the standard.In this implementation case, the first Roots flowmeter 29 and the second Roots flowmeter 30 provided in the oil pipeline of the oil discharge device or the oil filling device are respectively used to measure the quality and flow of oil and gas and the quality and flow of oil in the oil pipeline. The data processing module 28 provided in the oil discharge device or the oil filling device itself performs logical operations on the quality and flow of the collected oil and liquid, and outputs important gas-liquid ratio parameters. At the same time, the pressure sensor 31 provided in the oil tank of the oil discharge device or the oil filling device is used to measure the pressure in the oil tank, analyze and judge the sealing performance of the oil depot, and output important sealing parameters. The gas-liquid ratio and the pressure in the oil tank can be displayed on the display screen in the form of a historical curve, so that the driver can be informed of the information changes of each parameter, monitor the working conditions of the oil discharge device or the oil filling device and the oil and gas recovery unit 2, enable the driver to fully understand the working conditions of each component, and assist the driver to complete the oil and gas recovery work more conveniently and intelligently.

[0031] The above embodiments of the present invention are merely examples for clearly illustrating the technical solution, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A vehicle-mounted oil and gas recovery system, comprising an explosion-proof housing (1), an oil and gas recovery unit (2), a generator set (4) and a central control system (8), wherein: The oil and gas recovery unit (2) and the generator unit (4) are both arranged in an explosion-proof box (1); the explosion-proof box (1) is a rectangular box structure, and the explosion-proof box (1) is arranged on the supporting surface of the loading vehicle. A ventilation channel is arranged in the explosion-proof box (1), and the ventilation channel is correspondingly connected to the first oil and gas concentration meter (24). The explosion-proof box (1) is also provided with an exhaust gas discharge port (3), and the exhaust gas discharge port (3) is connected to the second oil and gas concentration meter (25); The central control system (8) comprises a central control module (18), a signal acquisition module (19), a data storage module (20) and an RS-232 communication interface. The central control system (8) is arranged outside the explosion-proof housing (1); the input end of the central control module (18) is respectively connected to the output ends of the signal acquisition module (19) and the data storage module (20); the output end of the central control module (18) is connected to a display screen (21) in a cab (17) of a loader via the RS-232 communication interface; the input end of the signal acquisition module (19) is respectively connected to an oil tank level gauge (23) of an oil and gas recovery unit (2), a first oil and gas concentration meter (24) and a second oil and gas concentration meter (25) on the explosion-proof housing (1) and a power generation parameter detection device (22) of a generator set (4); the input end of the data storage module (20) is connected to an output end of a data processing module (28) provided in an oil delivery device or an oil loading device via a wireless network; The oil and gas recovery unit (2) comprises an oil tank (9), an oil and gas recovery sealing joint (10), an oil unloading hose joint (11), an oil tank level gauge (23) and a leakage alarm (26); the oil tank (9) is provided with an oil tank level gauge (23); the oil tank (9) is respectively connected with an oil and gas recovery pipe and an oil unloading hose; the oil and gas recovery pipe is connected to the outside of the explosion-proof box (1) and is connected to the oil and gas recovery sealing joint (10); the oil unloading hose is connected to the outside of the explosion-proof box (1) and is provided with an oil unloading hose joint (11); The generator set (4) comprises a skid-mounted base (13), a soundproof cabin (14), a shock-absorbing pad (15), a generator (16) and a power generation parameter detection device (22); the generator set (4) is connected to the oil and gas recovery unit (2) via a cable (12); the two are integrated into a skid block and are jointly arranged on the skid-mounted base (13); the skid-mounted base (13) is fixed on the supporting surface of the loading vehicle; the soundproof cabin (14) is arranged on the skid-mounted base (13) around the generator (16); the shock-absorbing pad (15) is arranged below the generator (16) installed on the skid-mounted base (13); the output end of the power generation parameter detection device (22) is connected to the input end of the central control module (18).

2. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The ventilation passage in the explosion-proof housing (1) comprises a ventilation port (6) and a ventilation fan (5). A plurality of ventilation passages may be provided. A plurality of first oil and gas concentration meters (24) are provided corresponding to the ventilation passages. The first oil and gas concentration meter (24) is installed at the ventilation fan (5) and is used to detect the leakage oil and gas concentration in the ventilation passage and send it to a signal acquisition module (19). The signal acquisition module (19) transmits the collected information to a central control module (18). After receiving the information, the central control module (18) displays the leakage oil and gas concentration on a display screen (21) of a cab (17) of a loader.

3. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The second oil and gas concentration meter (25) sends the exhaust oil and gas concentration detected by the exhaust outlet to the signal acquisition module (19). After the central control module (18) receives the exhaust oil and gas concentration collected by the signal acquisition module (19), it transmits the information to the display screen (21) of the loader cab (17).

4. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The leakage alarm (26) is connected to the output end of the central control module (18); when the central control module (18) receives leakage oil and gas concentration and determines that it is higher than a first warning value, the leakage alarm (26) emits a first alarm sound; when the rate of change of leakage oil and gas concentration received by the central control module (18) within a certain period of time is higher than a second warning value, the leakage alarm (26) emits a second alarm sound.

5. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The oil tank level gauge (23) is used to detect the liquid level in the oil tank (9) of the oil gas recovery unit (2) and transmit the liquid level information to the signal acquisition module (19). After receiving the information from the signal acquisition module (19), the central control module (18) determines whether the oil tank (9) is drained and transmits the judgment information to the display screen (21) of the loader cab (17).

6. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The power generation parameter detection device (22) is used to detect the power generation parameters of the generator set (4) and send the power generation parameters to the signal acquisition module (19). The signal acquisition module (19) transmits the parameters to the central control module (18). After receiving the parameters, the central control module (18) transmits the power generation parameters to the display screen (21) of the loader cab (17).

7. The vehicle-mounted oil and gas recovery system according to claim 1 is characterized in that: The data storage module (20) is used to store the leakage oil and gas concentration, exhaust gas oil and gas concentration, liquid level in the oil tank and power generation parameters historically received by the central control module (18). The data storage module (20) also stores the gas-liquid ratio of the oil pipeline of the oil discharge device or the oil loading device and the sealing parameters in the oil tank of the oil discharge device or the oil loading device obtained by the data processing module (28) of the oil discharge device or the oil loading device through a wireless network. The central control module (18) transmits the parameters stored in the data storage module (20) to the display screen (21) of the loader cab (17).

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