LPG intelligent multipurpose pump tank truck and control method

Abstract

The application discloses an LPG intelligent multipurpose tank truck with a pump and a control method, and belongs to the field of tank truck control technology.The tank truck comprises a cloud platform, a vehicle-mounted central control device, a vehicle-mounted handheld terminal, an informationized sensor system, an Internet of Things lock, a liquid unloading pump system, a liquid pumping system and a mass flowmeter.The vehicle-mounted central control device is in communication connection with the cloud platform, the vehicle-mounted handheld terminal, the informationized sensor system, the Internet of Things lock, the liquid unloading pump system, the liquid pumping system and the mass flowmeter.The cloud platform is in communication connection with the vehicle-mounted handheld terminal.The application can make the vehicle-mounted handheld terminal receive a liquid unloading or pumping task from the cloud platform, and after a dangerous driver receives the task, the driver can input a liquid unloading or pumping task volume on the vehicle-mounted central control device, open the operation box door by using a password of the Internet of Things lock pushed by the vehicle-mounted handheld terminal, and independently complete reading and matching with a storage tank by using a vehicle-mounted electronic reading system, so that the driver can start liquid unloading or pumping operation, and most of the whole process is remote operation, so that the tank truck with the pump is very convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquefied petroleum gas, in particular to an LPG intelligent multipurpose tank truck with pump and control method. BACKGROUND

[0002] The micro-tube network gas supply system is a small distributed liquefied petroleum gas energy supply form, which changes the original "bottle supply, each family stores, self storage" gas supply mode into "small tank gas supply, special tank truck distribution, energy enterprise professional management" pipeline gas supply mode; generally, the tank truck with pump is used to close the small liquefied petroleum gas tank for unloading or pumping to realize the supply of liquefied petroleum gas medium or the safe emptying of the liquefied petroleum gas in the tank; however, the tank truck with pump has low safety and reliability, is inconvenient to use, is not intelligent enough, and has no settlement function.

[0003] Therefore, it is necessary to make further improvement. SUMMARY

[0004] The purpose of the present application is to provide an LPG intelligent multipurpose tank truck with pump and control method which achieves intrinsic safety intelligent operation, is convenient to use, has multiple purposes, is self-adaptive to communication environment, and is assisted by wisdom cloud decision-making, so as to overcome the shortcomings of the prior art.

[0005] An LPG intelligent multipurpose tank truck with pump designed according to the purpose has the following characteristics:

[0006] A cloud platform is used to issue unloading or pumping tasks, receive unloading or pumping data, and record the state of the tank truck with pump;

[0007] A vehicle-mounted central control device is used to input the unloading or pumping task quantity, and calculate the actual unloading or pumping quantity by using the data collected by the mass flow meter, so as to settle with the customer;

[0008] A vehicle-mounted handheld terminal is used to receive the issued unloading or pumping tasks, receive the unloading or pumping data, and push the password of the Internet of Things lock;

[0009] An informationized sensor system is used to detect the LPG pressure, LPG liquid level, LPG temperature and combustible gas concentration of the tank truck with pump, and send the detection values to the vehicle-mounted central control device;

[0010] An Internet of Things lock is used to open or close the operation box door of the tank truck with pump;

[0011] An unloading pump system is used to unload the tank;

[0012] A pumping pump system is used to pump the tank;

[0013] A mass flow meter is used to measure the mass of liquefied petroleum gas, and send the measurement data to the vehicle-mounted central control device;

[0014] The vehicle-mounted central control device is respectively connected in communication with a cloud platform, a vehicle-mounted handheld terminal, an informationized sensor system, an Internet of Things lock, a liquid unloading pump system, a liquid pumping system, and a mass flow meter, and the cloud platform is connected in communication with the vehicle-mounted handheld terminal.

[0015] The vehicle-mounted electronic identification system is further included for completing identification matching of the pump tank truck and the storage tank and sending matching success information to the vehicle-mounted central control device, and the vehicle-mounted electronic identification system is connected in communication with the vehicle-mounted central control device.

[0016] The vehicle-mounted data encryption terminal is further included for collecting data of the vehicle-mounted central control device and implementing encryption on the data, and the vehicle-mounted data encryption terminal is connected in communication with the vehicle-mounted central control device, the vehicle-mounted handheld terminal, and the cloud platform.

[0017] The Beidou positioning system is further included for delimiting an electronic fence range of the pump tank truck and the storage tank, and the Beidou positioning system is connected in communication with the vehicle-mounted central control device.

[0018] The vehicle-mounted servo control system is further included for opening the pressure pump in a forward direction or a reverse direction, and the vehicle-mounted servo control system is connected in communication with the vehicle-mounted central control device.

[0019] A control method of an LPG intelligent multipurpose pump tank truck designed for the purpose, characterized in that the method comprises the following steps:

[0020] A. The cloud platform issues a liquid unloading or pumping task to the vehicle-mounted handheld terminal, and the dangerous goods driver drives the LPG pump tank truck to a designated liquid unloading or pumping site according to the task requirements, and the vehicle-mounted positioning and the positioning of the designated storage tank are within the electronic fence range delimited by the Beidou positioning system;

[0021] B. The dangerous goods driver inputs a liquid unloading or pumping task volume on the vehicle-mounted central control device, and the vehicle-mounted central control device locally records the liquid unloading or pumping task and then performs self-checking on the pump tank truck through the informationized sensor system;

[0022] C. The dangerous goods driver opens the operation box door according to the password of the Internet of Things lock pushed by the vehicle-mounted handheld terminal, connects the liquid filling and pumping gun with the liquid filling port or the residual liquid discharge port of the storage tank, and connects the gas return gun with the gas return port of the storage tank;

[0023] D. The vehicle-mounted electronic identification system autonomously completes identification matching with the storage tank and sends matching success information to the vehicle-mounted central control device, and the vehicle-mounted central control device autonomously determines the liquid unloading or pumping permission according to the real-time detection signals of the informationized sensor system and the electronic identification matching information;

[0024] E. After the hazardous materials transport driver sees the unloading permission pushed by the vehicle-mounted central control device, he starts the unloading or pumping operation. After receiving the unloading or pumping start command, the unloading pump system or the pumping pump system starts the pressure pump in the forward or reverse direction through the vehicle-mounted servo control system. The LPG in the mobile pressure vessel flows to the storage tank through the liquid phase pipeline of the unloading pump system, or the LPG in the storage tank flows to the mobile pressure vessel through the liquid phase pipeline of the pumping pump system.

[0025] F. After the unloading or pumping operation is completed, the hazardous materials transport driver will reset the filling pumping gun and the air return gun, and close the control box door and the IoT lock. The vehicle-mounted central control device will automatically identify the end of the unloading or pumping operation based on the status of the access control and the IoT lock. The vehicle-mounted central control device will use the data collected from the mass flow meter to calculate the actual unloading or pumping volume of this task for settlement with the customer, and push the data of this unloading or pumping to the vehicle-mounted handheld terminal and the cloud platform through the vehicle-mounted data encryption terminal.

[0026] In step B, before the hazardous materials transport driver enters the unloading or pumping task volume on the vehicle-mounted central control device, the hazardous materials transport driver logs into the vehicle-mounted handheld terminal and performs human-vehicle mutual recognition. After the human-vehicle recognition is successful, the vehicle-mounted central control device begins to accept the task information and operation instructions related to unloading and pumping input by the hazardous materials transport driver.

[0027] In step B, the self-inspection items include satellite positioning, LPG pressure, LPG level, LPG temperature, combustible gas concentration, control box door open / close status, liquid extraction gun in position, return gas gun in position, height limit trigger status, emergency switch status, remote control emergency switch status, collision trigger status, shut-off valve open / close status, pump open / close status, IoT lock open / close status, and mass flow meter status.

[0028] In step E, when unloading or pumping operations are underway, if the detection value of the information sensor system exceeds the set threshold of the vehicle-mounted central control device or the fixed-point unloading or pumping function fails, the intrinsically safe protection action is automatically implemented and the unloading pump or pumping pump and all solenoid valves are shut down, putting the tanker truck with pump in a protected state. The vehicle-mounted central control device displays alarm information locally and simultaneously transmits the alarm information to the vehicle-mounted data encryption terminal, which then transmits it to the cloud platform. The cloud platform records the status of the tanker truck with pump and pushes the real-time vehicle status and auxiliary decision-making suggestions to the vehicle-mounted handheld terminal and the vehicle-mounted central control device. The hazardous materials transport driver can then independently conduct safety checks and operational operations based on the pushed information.

[0029] In step F, when the IoT lock changes its on / off state, it triggers the vehicle-mounted central control device to synchronously collect real-time data from the mass flow meter. After confirming the completion of the unloading or pumping task on the central control interface, the vehicle-mounted central control device is triggered to use the collected data to calculate the actual unloading or pumping volume for this task.

[0030] The Internet of Things lock, the vehicle-mounted central control device and the vehicle-mounted data encryption terminal are connected through hardware communication, and the vehicle-mounted data encryption terminal and the vehicle-mounted handheld terminal are connected through wireless communication; the vehicle-mounted data encryption terminal collects data of the vehicle-mounted central control device and reports the data to the cloud platform in real time, temporarily stores all data if it is detected that the communication network condition is not available, and completes the full data retransmission according to the protocol with the cloud platform after the communication network condition is restored; when the pump tank truck implements the liquid unloading or pumping task in the mobile communication network environment, the cloud platform synchronously obtains the data of the tank terminal through the information channel of the liquefied petroleum gas tank and verifies the data retransmitted by the subsequent vehicle-mounted data encryption terminal.

[0031] The cloud platform issues the liquid unloading or pumping task to the vehicle-mounted handheld terminal, the dangerous goods driver receives the task, inputs the liquid unloading or pumping task quantity on the vehicle-mounted central control device, opens the operation box door through the password of the Internet of Things lock pushed by the vehicle-mounted handheld terminal, and completes the reading matching with the tank through the vehicle-mounted electronic reading system, so that the liquid unloading or pumping operation can be started, most of the process is remote operation, the use of the pump tank truck is very convenient, the cloud platform is used to manage the liquid unloading or pumping task, and the vehicle-mounted handheld terminal and the vehicle-mounted central control device are used to operate the system, so that the pump tank truck is more intelligent, the vehicle-mounted central control device locally inputs the liquid unloading or pumping task, and performs self-checking on the pump tank truck through the information sensor system, confirms whether the state of the pump tank truck is abnormal, and when the detection value of the information sensor system exceeds the set threshold value or the fixed-point liquid unloading function fails during the liquid unloading or pumping operation, automatically implements the intrinsically safe protection action and closes the liquid unloading pump or the liquid pumping pump and all electromagnetic valves, so that the pump tank truck is in a protection state, and the safety of the use of the pump tank truck is greatly improved, and when the liquid unloading or pumping operation is completed, the vehicle-mounted central control device calculates the actual liquid unloading or pumping quantity of this task by using the data of the mass flowmeter, realizes the settlement function, and improves the practicability of the pump tank truck. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the pump tank truck in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application will be further described below in combination with the drawings and embodiments.

[0034] Referring to Figure 1 The LPG intelligent multipurpose pump tank truck comprises

[0035] The cloud platform 1 is used to issue the liquid unloading or pumping task, receive the data of the liquid unloading or pumping, and record the state of the pump tank truck;

[0036] The vehicle-mounted central control device 3 is used for inputting the liquid unloading or pumping task quantity and calculating the actual liquid unloading or pumping quantity by using the data collected by the mass flow meter 12 to settle accounts with customers.

[0037] The vehicle-mounted handheld terminal 5 is used for receiving the issued liquid unloading or pumping task, receiving the liquid unloading or pumping data, and pushing the password of the Internet of Things lock 6.

[0038] The informatized sensor system 4 is used for detecting the LPG pressure, LPG liquid level, LPG temperature and combustible gas concentration of the pump tank truck and sending the detection values to the vehicle-mounted central control device 3.

[0039] The Internet of Things lock 6 is used for opening or closing the operating box door of the pump tank truck.

[0040] The liquid unloading pump system 8 is used for unloading liquid to the storage tank.

[0041] The liquid pumping pump system 9 is used for pumping liquid from the storage tank.

[0042] The mass flow meter 12 is used for measuring the mass of liquefied petroleum gas and sending the measurement data to the vehicle-mounted central control device 3.

[0043] The vehicle-mounted central control device 3 is in communication connection with the cloud platform 1, the vehicle-mounted handheld terminal 5, the informatized sensor system 4, the Internet of Things lock 6, the liquid unloading pump system 8, the liquid pumping pump system 9 and the mass flow meter 12 respectively, and the cloud platform 1 is in communication connection with the vehicle-mounted handheld terminal 5.

[0044] The vehicle-mounted electronic identification system 7 is further included for completing the identification matching of the pump tank truck and the storage tank and sending the matching success information to the vehicle-mounted central control device 3, and the vehicle-mounted electronic identification system 7 is in communication connection with the vehicle-mounted central control device 3.

[0045] The vehicle-mounted data encryption terminal 13 is further included for collecting the data of the vehicle-mounted central control device 3 and implementing encryption on the data, and the vehicle-mounted data encryption terminal 13 is in communication connection with the vehicle-mounted central control device 3, the vehicle-mounted handheld terminal 5 and the cloud platform 1 respectively.

[0046] The Beidou positioning system 2 is further included for delimiting the electronic fence range of the pump tank truck and the storage tank, and the Beidou positioning system 2 is in communication connection with the vehicle-mounted central control device 3.

[0047] The vehicle-mounted servo control system 10 is further included for opening the pressure pump in the forward or reverse direction, and the vehicle-mounted servo control system 10 is in communication connection with the vehicle-mounted central control device 3.

[0048] The control method of the LPG intelligent multipurpose pump tank truck includes the following steps:

[0049] A、 By cloud platform 1 (intelligent cloud platform) to vehicle-mounted handheld (intelligent) terminal 5 issued unloading or pumping task, dangerous driver (or escort) according to vehicle-mounted handheld terminal 5 prompt information to confirm the task, dangerous driver according to the task requirements reference system recommended route independently to the designated unloading or pumping site, vehicle positioning and task specified small tank positioning in the same Beidou positioning system 2 within the scope of the electronic fence;

[0050] B、 Dangerous driver inputs unloading or pumping task on vehicle-mounted central control device 3, vehicle-mounted central control device 3 local input unloading or pumping task through information sensor system 4 to self-check the pump tank truck;

[0051] C、 Dangerous driver according to the password of the Internet of things lock 6 pushed by the vehicle-mounted handheld terminal 5 to open the operation box door, connect the liquid filling and pumping gun with the liquid filling port or residual port of the tank, and connect the gas return gun with the gas return port of the tank;

[0052] D、 Vehicle-mounted electronic reading system 7 autonomously completes reading matching with the tank and sends matching success information to vehicle-mounted central control device 3, vehicle-mounted central control device 3 autonomously determines unloading or pumping permission according to real-time detection signal of information sensor system 4 and electronic reading matching information;

[0053] E、 Dangerous driver starts unloading or pumping operation after seeing the unloading permission pushed by vehicle-mounted central control device 3, unloading pump system 8 or pumping pump system 9 receives unloading or pumping start instruction, opens pressure pump through vehicle-mounted servo control system 10 in forward or reverse direction, LPG in mobile pressure container 11 flows to the tank through liquid phase pipeline of unloading pump system 8, or LPG in the tank flows to mobile pressure container 11 through liquid phase pipeline of pumping pump system 9;

[0054] F、 After unloading or pumping operation is completed, dangerous driver resets the liquid filling and pumping gun, closes the operation box door and the Internet of things lock 6, vehicle-mounted central control device 3 autonomously identifies unloading or pumping operation end according to the state of access control and the Internet of things lock 6, vehicle-mounted central control device 3 calculates actual unloading or pumping volume of this task by using the data of mass flow meter 12 collected, to settle with customers, and pushes the data of this unloading or pumping to vehicle-mounted handheld terminal 5 and cloud platform 1 through vehicle-mounted data encryption terminal 13.

[0055] The control method of the LPG intelligent multipurpose pump tank truck system aims to fill the market gap of the small liquefied petroleum gas storage tank unloading and safety emergency pumping dual-purpose pump truck equipment. The system is formed by a combination of an intrinsically safe linkage vehicle-mounted self-control system, a vehicle-mounted electronic reading and sensing system, a self-adaptive near / remote communication system, and a remote information-based intelligent decision-making management system, and achieves intrinsically safe intelligent operation, multipurpose use, communication environment self-adaptation, and intelligent cloud-assisted decision-making.

[0056] In step A, when the cloud platform 1 issues an unloading or pumping task to the vehicle-mounted handheld terminal 5 (the cloud platform 1 pushes the unloading / pumping task information to the designated vehicle-mounted handheld terminal 5), the driver ID, the liquefied petroleum gas storage tank ID, the geographic positioning, and the pump tank truck ID are bound in the task.

[0057] In step B, before the driver inputs the unloading or pumping task quantity on the vehicle-mounted central control device 3, the driver logs in to the vehicle-mounted handheld terminal 5 and performs mutual recognition between the driver and the vehicle. The vehicle-mounted handheld terminal 5 connects the vehicle-mounted central control device 3 and the vehicle-tank recognition device configured by the vehicle-mounted central control device through the vehicle-mounted data encryption terminal 13 to achieve mutual recognition. After successful human-vehicle recognition, the vehicle-mounted central control device 3 starts to accept the driver's input of unloading, pumping-related task information and operation instructions. Successful vehicle-tank recognition and pairing are necessary conditions for the start of the vehicle-mounted unloading pump system 8 or the pumping pump system 9.

[0058] In step B, the self-check items include satellite positioning, LPG pressure, LPG liquid level, LPG temperature, combustible gas concentration, operation box door switch state, pumping gun in place state, back gas gun in place state, height limit trigger state, emergency switch state, remote control emergency switch state, collision trigger state, shut-off valve switch state, pump switch state, Internet of Things lock switch state, and mass flowmeter state.

[0059] In step E, during unloading or pumping operation, when the detection value of the information-based sensor system 4 exceeds the set threshold value of the vehicle-mounted central control device 3 or the fixed-point unloading or pumping function fails, the intrinsically safe protection action is automatically implemented, and the unloading pump or pumping pump and all solenoid valves are closed, so that the pump tank truck is in a protection state. The vehicle-mounted central control device 3 displays alarm information locally, synchronously transmits the alarm information to the vehicle-mounted data encryption terminal 13, and transmits the alarm information to the cloud platform 1 through the vehicle-mounted data encryption terminal 13. The cloud platform 1 records the state of the pump tank truck, pushes the real-time state of the vehicle and the auxiliary decision-making suggestions to the vehicle-mounted handheld terminal 5 and the vehicle-mounted central control device 3, and the driver performs safety inspection and operation according to the pushed information.

[0060] The whole process of unloading or pumping operation is monitored by the positioning sensor, pressure sensor 14, liquid level sensor 15 and temperature sensor 16 in the information sensor system, which transmits real-time monitoring signals to the vehicle-mounted central control device. The vehicle-mounted central control device 3 has autonomous threshold judgment capability. If the pressure, liquid level and other data exceed the threshold, the vehicle-mounted central control device 3 starts the local alarm mechanism. The vehicle-mounted central control device 3 shares the signals in real time with the vehicle-mounted data encryption terminal 13, which encrypts the data according to the built-in encryption program and transmits the data to the cloud platform 1 according to the platform communication protocol.

[0061] In step F, when the switch state of the Internet of Things lock 6 changes, the vehicle-mounted central control device 3 synchronously collects real-time data of the mass flow meter 12. After confirming the completion of the unloading or pumping task on the central control interface, the vehicle-mounted central control device 3 calculates the actual unloading or pumping volume using the collected data and transmits the unloading or pumping volume to the vehicle-mounted handheld terminal and the intelligent cloud platform. The Internet of Things lock 6, mass flow meter 12 and vehicle-mounted central control device 3 form a linkage self-control and edge computing system.

[0062] In steps C and F, the vehicle-mounted central control device 3 monitors the switch state of the Internet of Things lock 6 in real time and reports the liquid level, pressure, positioning and flow meter data to the vehicle-mounted data encryption terminal 13 when the switch state of the Internet of Things lock 6 changes. The vehicle-mounted data encryption terminal 13 implements encryption and reports the liquid level, pressure, positioning and flow meter data to the cloud platform 1. The cloud platform 1 records the received data information and calculates the actual unloading or pumping volume according to the electronic fence setting, and completes the association and record of order information with the platform. The cloud platform 1 intelligently judges the data validity, unloading / pumping volume calculation and task matching according to the electronic fence setting and unloading or pumping task information.

[0063] When the switch state of the Internet of Things lock 6 configured with a pump tank truck changes, it triggers the vehicle-mounted central control device 3 to collect real-time data of the mass flow meter 12, and also triggers the vehicle-mounted central control device 3 to send time, positioning, mass flow, task information and auxiliary information to the intelligent cloud platform 1 through the vehicle-mounted data encryption terminal 13. The intelligent cloud platform 1 records the received information and calculates the actual unloading or pumping volume according to the electronic fence setting, and completes the association and record of order information with the platform. If there is an abnormality, it will be pushed to the vehicle-mounted handheld terminal for the driver to handle.

[0064] In step F, when settling accounts with the customer, the dangerous goods driver uses the vehicle-mounted handheld terminal 5 to print a receipt for the customer to sign and confirm as the basis for settlement, or prints the unloading or pumping record on the cloud platform 1 for settlement. The handheld intelligent terminal 5 is built-in with a printer and is in real-time linkage with the vehicle-mounted central control device 3 and the vehicle-mounted data encryption terminal 13. After completing the unloading or pumping task, the business receipt can be printed immediately for the customer to sign and confirm as the basis for settlement.

[0065] The Internet of Things lock 6, the vehicle-mounted central control device 3, and the vehicle-mounted data encryption terminal 13 are connected through hardware communication, the vehicle-mounted data encryption terminal 13 and the vehicle-mounted handheld terminal 5 are connected through wireless communication, the vehicle-mounted data encryption terminal 13 and the vehicle-mounted handheld terminal 5 adopt near field wireless communication technology, the Internet of Things lock password unlocking process is controlled by the information platform and does not depend on the real-time interaction of the remote mobile communication network, the Internet of Things lock 6, the vehicle-mounted central control device 3, the vehicle-mounted data encryption terminal 13, and the vehicle-mounted handheld terminal 5 form an Internet of Things lock 6 unlocking password transmission data chain, and the dangerous driver obtains the unlocking password on the vehicle-mounted handheld terminal 5 interface after operating the Internet of Things lock 6 to apply for the unlocking password; the vehicle-mounted data encryption terminal 13 records the data of the vehicle-mounted central control device 3 and reports the data to the cloud platform 1 in real time, if the communication network condition is not detected, all data are temporarily stored, and after the communication network condition is restored, the data are completed according to the agreement with the cloud platform 1; when the pump tank truck implements the liquid unloading or pumping task in the mobile communication network environment, the cloud platform 1 synchronously obtains the data of the tank end through the information channel of the liquefied petroleum gas tank and verifies the data supplemented by the subsequent vehicle-mounted data encryption terminal 13.

[0066] The vehicle-mounted data encryption terminal 13 is provided with a remote mobile communication module, which realizes communication with the designated information platform through the remote mobile communication network, the vehicle-mounted data encryption terminal 13 realizes reliable communication with all vehicle-mounted systems of the vehicle through the hardware communication line, the vehicle-mounted data encryption terminal 13 realizes near field wireless communication with the vehicle-mounted handheld terminal 5 through the near field wireless communication technology, and the vehicle-mounted handheld terminal can perform the task in the mobile communication network environment and at the same time meet the management requirements of the information platform and be traceable and reviewable.

[0067] The vehicle-mounted data encryption terminal 13 is provided with a data storage module, the storage capacity is configured according to the operation requirements, the vehicle-mounted data encryption terminal 13 records the data of the vehicle-mounted central control device 3 and reports the data to the designated information platform in real time, if the communication network condition is not detected, all data are temporarily stored, if the communication network condition is restored, the data are completed according to the agreement with the information platform, and the data are traceable and reviewable.

[0068] The vehicle-mounted handheld terminal 5 of the pump tank truck is configured to form a networked intelligent control system with the vehicle-mounted data encryption terminal 13, the vehicle-mounted central control device 3, the vehicle-mounted sensor system, the Internet of Things lock 6 of the operating box door, the mass flow meter 12, and the cloud platform 1, to realize the intrinsic safety operation of the full system intelligent operation in the mobile communication network environment, and the intrinsic safety operation of the full system time-sharing linkage intelligent operation by using the portable characteristics, data chain setting, edge computing architecture and configuration, and data supplement and verification mechanism of the vehicle-mounted handheld terminal.

[0069] The unloading pump system 8 and the pumping system 9 are integrated and shared, and comprise a pressure pump and a reversing control device. The pressure pump is switched between forward working and reverse working by the reversing control device. The pressure pump is for the unloading pump system 8 in the forward working state, and is for the pumping system 9 in the reverse working state. The same set of system contains the pressure pump and the reversing control device to realize two working conditions, one of which is the unloading condition, and the other of which is the pumping condition. Therefore, the tank truck with pump is a multipurpose LPG tank truck, which has the functions of closed unloading to the small LPG tank and closed pumping from the small LPG tank.

[0070] The unloading pump system 8 extracts the liquid phase LPG from the vehicle-mounted mobile pressure container 11 to the small tank, and the pumping system 9 extracts the liquid phase LPG from the small LPG tank to the vehicle-mounted mobile pressure container 11. By combining with the electric control reversing control device, a single pressure pump realizes the unloading pump system 8 in the forward working state and the pumping system 9 in the reverse working state.

[0071] The filling gun pipeline is connected to the outlet of the unloading pump system 8, the filling gun is connected to the filling port of the small LPG tank, and the filling gun pipeline and the post-pump pipeline constitute a filling circuit. The pumping gun is connected to the special residual discharge port of the small LPG tank, the pumping gun pipeline is connected to the inlet of the pumping pump system 9, and the pumping gun pipeline and the pre-pump pipeline constitute a pumping circuit. By using the unified standard of the filling gun interface and the pumping gun interface and the same reversing design of the unloading pump system 8 and the pumping system 9, the same gun (i.e. the filling and pumping gun) and the pipeline realize the filling gun and the filling pipeline in the unloading state and the pumping gun and the pumping pipeline in the pumping state.

[0072] The mass flowmeter 12 in the information sensor system 4 directly measures the mass characteristics of LPG by using the Coriolis measurement principle. When the composition of LPG changes and the environmental temperature changes, the calculation parameters do not need to be adjusted, thereby avoiding the influence of the composition ratio, temperature and gas-liquid mixture of LPG on the measurement (i.e. avoiding the negative influence of unstable and inaccurate component parameters and non-uniform and unstable temperature parameters). In combination with the intelligent algorithm of the vehicle-mounted central control device 3, the display and ticket printing function of the vehicle-mounted handheld terminal 5, the quantity of unloading and pumping under any composition, various environmental temperatures and various medium conditions can be accurately and reliably measured.

[0073] The liquid filling and pumping gun and the gas return gun are arranged in the operation box of the tank truck with pump, the operation box door is provided with the Internet of Things lock 6, the unloading and pumping actions are linked with the switch state of the Internet of Things lock 6, the Internet of Things lock 6 is unlocked before the unloading and pumping actions, and the Internet of Things lock is locked after the unloading and pumping actions, that is, the operation box door and the Internet of Things lock 6 must be opened before the liquid filling and pumping gun is used, the operation box door and the Internet of Things lock 6 must be closed before the task is completed, the opening and closing states of the Internet of Things lock 6 are substantially linked with the task actions by combining the information reporting mechanism of the vehicle-mounted central control device 3, and the opening and closing states of the Internet of Things lock 6 are recorded in the information system.

[0074] The above is the preferred scheme of the present application, which shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A control method for an LPG smart multipurpose pump tank car, characterized by: The method comprises the following steps: A. The cloud platform (1) issues a liquid unloading or pumping task to the vehicle-mounted handheld terminal (5), and the dangerous goods driver drives the LPG tank truck with pump to the designated liquid unloading or pumping site within the electronic fence range defined by the Beidou positioning system (2); B. The dangerous goods driver inputs the liquid unloading or pumping task quantity on the vehicle-mounted central control device (3), and the vehicle-mounted central control device (3) performs self-checking on the tank truck with pump through the information sensor system (4) after the local input of the liquid unloading or pumping task; C. The dangerous goods driver opens the operation box door according to the password of the Internet of Things lock (6) pushed by the vehicle-mounted handheld terminal (5), connects the liquid filling and pumping gun with the liquid filling port or residual discharge port of the storage tank, and connects the gas return gun with the gas return port of the storage tank; D. The vehicle-mounted electronic identification system (7) autonomously completes the identification matching with the storage tank and sends the matching success information to the vehicle-mounted central control device (3), and the vehicle-mounted central control device (3) autonomously determines the liquid unloading or pumping permission according to the real-time detection signal of the information sensor system (4) and the electronic identification matching information; E. After seeing the liquid unloading permission pushed by the vehicle-mounted central control device (3), the dangerous goods driver starts the liquid unloading or pumping operation, and after receiving the liquid unloading or pumping start instruction, the liquid unloading pump system (8) or the liquid pumping pump system (9) opens the pressure pump in the forward or reverse direction through the vehicle-mounted servo control system (10), and the LPG in the mobile pressure container (11) flows to the storage tank through the liquid phase pipeline of the liquid unloading pump system (8), or the LPG in the storage tank flows to the mobile pressure container (11) through the liquid phase pipeline of the liquid pumping pump system (9); F. After the completion of the liquid unloading or pumping operation, the dangerous goods driver resets the liquid filling and pumping gun and the gas return gun, closes the operation box door and the Internet of Things lock (6), and the vehicle-mounted central control device (3) autonomously identifies the end of the liquid unloading or pumping operation according to the state of the access control and the Internet of Things lock (6), calculates the actual liquid unloading or pumping quantity of this task according to the data of the mass flow meter (12) collected by the vehicle-mounted central control device (3), settles the account for the customer, and pushes the data of this liquid unloading or pumping operation to the vehicle-mounted handheld terminal (5) and the cloud platform (1) through the vehicle-mounted data encryption terminal (13).

2. The control method of the LPG smart multipurpose pump tank truck according to claim 1, characterized in that: In step B, before the dangerous goods driver inputs the liquid unloading or pumping task quantity on the vehicle-mounted central control device (3), the dangerous goods driver logs in the vehicle-mounted handheld terminal (5) and performs person-vehicle mutual identification, and after the person-vehicle identification is successful, the vehicle-mounted central control device (3) starts to accept the task information and operation instructions related to liquid unloading or pumping input by the dangerous goods driver; In step B, the self-checking items include satellite positioning, LPG pressure, LPG liquid level, LPG temperature, flammable gas concentration, operation box door opening and closing state, liquid pumping gun positioning state, gas return gun positioning state, height limiting trigger state, emergency switch state, remote control emergency switch state, collision trigger state, cut-off valve opening and closing state, pump opening and closing state, Internet of Things lock opening and closing state, and mass flow meter state.

3. The control method of the LPG smart multipurpose pump tank vehicle of claim 1, characterized by: In step E, when the unloading or pumping operation is in progress, and the detection value of the informationized sensor system (4) exceeds the set threshold value of the vehicle-mounted central control device (3) or the fixed-point unloading or pumping function fails, the intrinsic safety protection action is automatically implemented and the unloading pump or pumping pump and all solenoid valves are closed, so that the pump tank truck is in a protection state. The vehicle-mounted central control device (3) displays alarm information locally, synchronously transmits the alarm information to the vehicle-mounted data encryption terminal (13), and transmits the alarm information to the cloud platform (1) through the vehicle-mounted data encryption terminal (13). The cloud platform (1) records the state of the pump tank truck, pushes the real-time state of the vehicle and the auxiliary decision suggestion to the vehicle-mounted handheld terminal (5) and the vehicle-mounted central control device (3), and the dangerous driver independently carries out safety inspection and operation according to the pushed information.

4. The control method of the LPG smart multipurpose pump tank vehicle of claim 1, characterized by: In step F, when the switch state of the Internet of Things lock (6) changes, the vehicle-mounted central control device (3) synchronously collects the real-time data of the mass flowmeter (12). After confirming that the unloading or pumping task is completed on the central control interface, the vehicle-mounted central control device (3) applies the collected data to calculate the actual unloading or pumping volume of this task.

5. The control method of the LPG smart multipurpose pump tank vehicle of claim 1, characterized by: The Internet of Things lock (6), the vehicle-mounted central control device (3), and the vehicle-mounted data encryption terminal (13) are connected through hardware communication. The vehicle-mounted data encryption terminal (13) and the vehicle-mounted handheld terminal (5) are connected through wireless communication. The vehicle-mounted data encryption terminal (13) collects the data of the vehicle-mounted central control device (3) and reports the data to the cloud platform (1) in real time. If the communication network condition is not available, all data are temporarily stored, and after the communication network condition is restored, all data are completed according to the protocol with the cloud platform (1). When the pump tank truck implements the unloading or pumping task in the environment without mobile communication network, the cloud platform (1) synchronously obtains the data of the storage tank end through the information channel of the liquefied petroleum gas storage tank and verifies the data supplemented by the subsequent vehicle-mounted data encryption terminal (13).

6. A multipurpose pump tank vehicle for performing the control method of the LPG intelligent multipurpose pump tank vehicle according to any one of claims 1 to 5, characterized by: Comprise The cloud platform (1) is used to issue unloading or pumping tasks, receive unloading or pumping data, and record the state of the pump tank truck. The vehicle-mounted central control device (3) is used to input the unloading or pumping task volume and apply the collected mass flowmeter (12) data to calculate the actual unloading or pumping volume for customer settlement. The vehicle-mounted handheld terminal (5) is used to receive the issued unloading or pumping task, receive the unloading or pumping data, and push the password of the Internet of Things lock (6). The informationized sensor system (4) is used to detect the LPG pressure, LPG liquid level, LPG temperature, and combustible gas concentration of the pump tank truck and send the detection value to the vehicle-mounted central control device (3). The Internet of Things lock (6) is used to open or close the operation box door of the pump tank truck. The unloading pump system (8) is used to unload to the storage tank. The pumping pump system (9) is used to pump from the storage tank. The mass flowmeter (12) is used to measure the mass of liquefied petroleum gas and send the measurement data to the vehicle-mounted central control device (3). The vehicle-mounted central control device (3) is respectively connected with the cloud platform (1), the vehicle-mounted handheld terminal (5), the informationized sensor system (4), the Internet of Things lock (6), the unloading pump system (8), the pumping pump system (9), and the mass flow meter (12) in communication connection, and the cloud platform (1) is connected with the vehicle-mounted handheld terminal (5) in communication connection.

7. The multipurpose pump tank cart of claim 6, wherein: The vehicle-mounted electronic identification system (7) is further included for completing the identification matching of the pump tank truck and the storage tank and sending the matching success information to the vehicle-mounted central control device (3), and the vehicle-mounted electronic identification system (7) is connected with the vehicle-mounted central control device (3) in communication connection.

8. The multipurpose pump tank cart of claim 7, wherein: The vehicle-mounted data encryption terminal (13) is further included for collecting the data of the vehicle-mounted central control device (3) and implementing the encryption of the data, and the vehicle-mounted data encryption terminal (13) is respectively connected with the vehicle-mounted central control device (3), the vehicle-mounted handheld terminal (5), and the cloud platform (1) in communication connection.

9. The multipurpose pump tank cart of claim 8, wherein: The Beidou positioning system (2) is further included for delimiting the electronic fence range of the pump tank truck and the storage tank, and the Beidou positioning system (2) is connected with the vehicle-mounted central control device (3) in communication connection.

10. The multipurpose band pump can vehicle of claim 9, wherein: The vehicle-mounted servo control system (10) is further included for opening the pressure pump in the forward or reverse direction, and the vehicle-mounted servo control system (10) is connected with the vehicle-mounted central control device (3) in communication connection.

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