阅读说明：本技术 一种转注控制系统及方法 (Transfer control system and method ) 是由 郑国昆 杨之江 张雷杰 丁大江 吴齐才 王飞 吕岩 邢然 丁保民 于 2019-07-18 设计创作，主要内容包括：本发明提供一种转注控制系统及方法,控制系统包括槽车、泵车和贮罐,控制系统控制泵车、槽车与贮罐之间的转注,还包括为显控单元、主控单元和操作面板供电的蓄电池直流稳压的稳压电源；主控单元控制转注控制系统中的被控对象,采集和分析处理转注控制系统的控制状态信息,针对控制状态信息相对应的控制被控对象,实时将控制状态信息上传至显控单元,主控单元接收到显控单元下发的控制指令后完成对应功能；显控单元实时显示转注控制系统在转注过程中的状态信息,并储存状态信息；操作面板指示转注控制系统的流程状态,控制系统的上电、断电和急停。转注控制系统及方法适用于泵车和槽车编组,全自动转注,降低手动操作工作量,降低误操作风险。(The invention provides a transfer control system and a method, wherein the control system comprises a tank car, a pump truck and a storage tank, the control system controls the transfer among the pump truck, the tank car and the storage tank, and the control system also comprises a storage battery direct-current voltage-stabilizing power supply for supplying power to a display control unit, a main control unit and an operation panel; the main control unit controls a controlled object in the transfer control system, acquires, analyzes and processes control state information of the transfer control system, uploads the control state information to the display control unit in real time aiming at the controlled object corresponding to the control state information, and completes corresponding functions after receiving a control instruction sent by the display control unit; the display control unit displays the state information of the transfer control system in the transfer process in real time and stores the state information; the operation panel indicates the flow state of the transfer control system and controls the power-on, power-off and emergency stop of the system. The transfer control system and the transfer control method are suitable for marshalling of the pump truck and the tank car, full-automatic transfer is achieved, manual operation workload is reduced, and misoperation risks are reduced.)

1. A transfer control system comprises a tank car, a pump car and a storage tank, wherein the transfer control system controls transfer among the pump car, the tank car and the storage tank, and is characterized by comprising a voltage-stabilized power supply, a display control unit, a main control unit and an operation panel;

the voltage stabilizing power supply is used for stabilizing the output voltage of the storage battery so as to meet the power supply quality requirements of the display control unit, the main control unit and the operation panel;

the main control unit is used for controlling a controlled object in the transfer control system, acquiring, analyzing and processing control state information of the transfer control system, uploading the control state information to a display control unit in real time aiming at the controlled object corresponding to the control state information, and completing corresponding functions after receiving a control instruction sent by the display control unit;

the display control unit is used for receiving the control state information uploaded by the main control unit, sending a control command to the main control unit, displaying the state information of the transfer control system in the transfer process in real time and storing the state information;

the operation panel is used for indicating the flow state of the transfer control system, controlling the power-on and power-off of the transfer control system, and controlling the sudden stop of the transfer control system to be used as the supplementary control and display of part of key information of the display control unit.

2. The transfer control system of claim 1 wherein said controlled objects include a pumper chassis power take off, a proportional overflow valve, a proportional flow valve, a flow meter, a pumper sensor on said pumper, and a tanker sensor on said tanker;

after the pump truck chassis power takeoff receives a connection or disconnection signal sent by the main control unit, the pump truck chassis power takeoff completes power takeoff or stops power takeoff; or

The proportional overflow valve adjusts the hydraulic maximum pressure of the transfer control system, and controls the proportional flow valve to adjust the rotating speed of the hydraulic motor, the rotating speed of the hydraulic motor is in direct proportion to the rotating speed of the magnetic pump, and the rotating speed of the magnetic pump is in positive correlation with the transfer speed of the transfer control system, namely the proportional flow valve is controlled to adjust the concentration speed; or

Liquid pipeline is arranged between the pump truck and the storage tank and between the tank truck and the pump truck, and the flow meter is used for collecting instantaneous flow rate and accumulated flow rate of transfer in the liquid pipeline and uploading the instantaneous flow rate and the accumulated flow rate to the main control unit; or

The pump truck sensor comprises a pump truck temperature sensor, a pump truck pressure sensor and a pump truck liquid level sensor; or

The tank car sensor comprises a tank car temperature sensor, a tank car pressure sensor and a tank car liquid level sensor.

3. The transfer control system of claim 1 wherein said battery is disposed on a chassis of said pump truck; or

The display control unit displays real-time displayed state information including at least one of temperature information, liquid level information, pressure information and valve state information.

4. The transfer control system of claim 1 wherein said master control unit is capable of collecting a level value for a storage tank.

5. The transfer control system of claim 1 wherein a liquid media sensor is disposed on said liquid line proximate said reservoir;

the liquid medium sensor is used for collecting information of liquid flowing through the liquid medium sensor in the liquid pipeline and transmitting the information to the main control unit.

6. The transfer control system of claim 1, wherein a pneumatic ball valve is disposed on the liquid line for controlling the on-off of the liquid in the liquid line; or

And the master control unit controls the on-off of the pneumatic ball valve through a pump truck electromagnetic valve of a pump truck gas distribution platform of the pump truck and a tank truck electromagnetic valve on the tank truck gas distribution platform of the tank truck.

7. The transfer control system according to claim 2, wherein the main control unit adjusts the opening of the proportional relief valve according to the received instantaneous flow rate and accumulated flow collected by the flowmeter, and adjusts the transfer speed of the transfer control system.

8. The transfer control system of any one of claims 1-7, wherein the pump truck gas distribution station of the pump truck and the tank truck gas distribution station of the tank truck both utilize inert gas.

9. A transfer control method comprises a tank car, a pump car and a storage tank, and further comprises a voltage-stabilized power supply, a display control unit, a main control unit and an operation panel, and is characterized by comprising the following steps:

starting a transfer, wherein the main control unit receives an instruction of the display control unit or detects a transfer power-on command of the operation panel, and the main control unit controls the transfer to be started;

the pump filling step, which is to connect a tank car storage tank pressurization electromagnetic valve of a tank car gas distribution platform of the tank car, pressurize the tank car storage tank of the tank car, and communicate a gas pipeline and a liquid pipeline between the tank car and the pump car, wherein liquid in the tank car storage tank flows into the pump car storage tank, and a magnetic pump of the pump car is filled with the liquid;

transferring, wherein the main control unit controls a power takeoff of a chassis of the pump truck to work, controls a proportional overflow valve and a proportional flow valve to be opened, extracts liquid in the magnetic pump, controls a pneumatic ball valve of the liquid pipeline to be opened, communicates the liquid pipeline and the gas pipeline among the tank truck, the pump truck and a storage tank, and flows to the storage tank;

and closing the transfer, closing the pneumatic ball valves of the liquid pipeline and the gas pipeline, closing the proportional flow valve and the proportional overflow valve, closing the power takeoff of the chassis of the pump truck and completing the transfer of the tank truck and the pump truck to the storage tank when the main control unit judges that the accumulated flow reaches the transfer target value or the liquid level value of the storage tank reaches the target liquid level value.

10. The transfer control method according to claim 9, characterized in that during the transfer process, a large flow fast transfer stage and a small flow full transfer stage are included;

the high-flow quick transfer stage is that after the liquid path pipeline is filled with liquid, a liquid medium sensor on the liquid path pipeline sends a signal like the main control unit, the main control unit controls the flowmeter to start metering, the flowmeter feeds back the acquired instantaneous flow rate and accumulated flow to the main control unit, and the main control unit adjusts the opening of the proportional flow valve through the instantaneous flow rate to control the liquid flow rate to be relatively large;

and the small-flow full-filling stage is that when the transfer process is nearly completed, the main control unit adjusts the opening of the proportional flow valve to reduce the flow rate of liquid after judging through the accumulated flow or the liquid level value of the storage tank.

Technical Field

The invention relates to the field of automatic transfer control systems, in particular to a transfer control system and a transfer control method.

Background

At present, in the technical field of liquid transportation, when the distance between fixed large storage tanks is far away, a tank car is generally adopted to transport two storage tanks, and a pump is used as a power source to finish liquid transfer between the storage tanks and the tank car. For toxic and volatile liquid, closed transfer injection is needed, and waste gas formed by transfer injection cannot be directly discharged into the atmosphere.

The traditional closed type transfer system generally only adopts a tank car and does not have a power source, and even if a pump is configured as a transfer power source, the system is generally operated manually by a person to complete the transfer work; or a pump truck is additionally arranged as a power source, and the transfer work is completed in a manual operation mode of personnel.

Disclosure of Invention

The invention aims to provide a transfer control system and a transfer control method, which are used for solving the problems that in the prior art, a storage tank needs to be manually operated when a tank car and a pump car transfer the storage tank, and automation cannot be realized.

In order to achieve the purpose, the invention provides the following technical scheme:

a transfer control system comprises a tank car, a pump car and a storage tank, wherein the transfer control system controls transfer among the pump car, the tank car and the storage tank and comprises a voltage-stabilized power supply, a display control unit, a main control unit and an operation panel;

the voltage stabilizing power supply is used for stabilizing the output voltage of the storage battery so as to meet the power supply quality requirements of the display control unit, the main control unit and the operation panel;

the main control unit is used for controlling a controlled object in the transfer control system, acquiring, analyzing and processing control state information of the transfer control system, uploading the control state information to a display control unit in real time aiming at the controlled object corresponding to the control state information, and completing corresponding functions after receiving a control instruction sent by the display control unit;

the display control unit is used for receiving the control state information uploaded by the main control unit, sending a control command to the main control unit, displaying the state information of the transfer control system in the transfer process in real time and storing the state information;

the operation panel is used for indicating the flow state of the transfer control system, controlling the power-on and power-off of the transfer control system, and controlling the sudden stop of the transfer control system to be used as the supplementary control and display of part of key information of the display control unit.

The controlled object comprises a pump truck chassis power takeoff, a proportional overflow valve, a proportional flow valve, a flow meter, a pump truck sensor on the pump truck and a tank truck sensor on the tank truck;

after the pump truck chassis power takeoff receives a connection or disconnection signal sent by the main control unit, the pump truck chassis power takeoff completes power takeoff or stops power takeoff; or

The proportional overflow valve adjusts the hydraulic maximum pressure of the transfer control system, and controls the proportional flow valve to adjust the rotating speed of the hydraulic motor, the rotating speed of the hydraulic motor is in direct proportion to the rotating speed of the magnetic pump, and the rotating speed of the magnetic pump is in positive correlation with the transfer speed of the transfer control system, namely the proportional flow valve is controlled to adjust the concentration speed; or

Liquid pipeline is arranged between the pump truck and the storage tank and between the tank truck and the pump truck, and the flow meter is used for collecting instantaneous flow rate and accumulated flow rate of transfer in the liquid pipeline and uploading the instantaneous flow rate and the accumulated flow rate to the main control unit; or

The pump truck sensor comprises a pump truck temperature sensor, a pump truck pressure sensor and a pump truck liquid level sensor; or

The tank car sensor comprises a tank car temperature sensor, a tank car pressure sensor and a tank car liquid level sensor.

The storage battery is arranged on a chassis of the pump truck; or

The display control unit displays real-time displayed state information including at least one of temperature information, liquid level information, pressure information and valve state information.

Wherein, the main control unit can gather the liquid level value of basin.

Wherein a liquid medium sensor is arranged on the liquid pipeline close to the storage tank;

the liquid medium sensor is used for collecting information of liquid flowing through the liquid medium sensor in the liquid pipeline and transmitting the information to the main control unit.

The pneumatic ball valve is arranged on the liquid pipeline and used for controlling the on-off of liquid in the liquid pipeline; or

And the master control unit controls the on-off of the pneumatic ball valve through a pump truck electromagnetic valve of a pump truck gas distribution platform of the pump truck and a tank truck electromagnetic valve on the tank truck gas distribution platform of the tank truck.

The main control unit adjusts the opening of the proportional overflow valve according to the received instantaneous flow rate and the accumulated flow collected by the flowmeter, and adjusts the transfer speed of the transfer control system.

The pump truck gas distribution platform of the pump truck and the tank truck gas distribution platform of the tank truck both adopt inert gas.

A transfer control method comprises a tank car, a pump car and a storage tank, and further comprises a voltage-stabilized power supply, a display control unit, a main control unit and an operation panel, and the transfer control method comprises the following steps:

starting a transfer, wherein the main control unit receives an instruction of the display control unit or detects a transfer power-on command of the operation panel, and the main control unit controls the transfer to be started;

the pump filling step, which is to connect a tank car storage tank pressurization electromagnetic valve of a tank car gas distribution platform of the tank car, pressurize the tank car storage tank of the tank car, and communicate a gas pipeline and a liquid pipeline between the tank car and the pump car, wherein liquid in the tank car storage tank flows into the pump car storage tank, and a magnetic pump of the pump car is filled with the liquid;

transferring, wherein the main control unit controls a power takeoff of a chassis of the pump truck to work, controls a proportional overflow valve and a proportional flow valve to be opened, extracts liquid in the magnetic pump, controls a pneumatic ball valve of the liquid pipeline to be opened, communicates the liquid pipeline and the gas pipeline among the tank truck, the pump truck and a storage tank, and flows to the storage tank;

and closing the transfer, closing the pneumatic ball valves of the liquid pipeline and the gas pipeline, closing the proportional flow valve and the proportional overflow valve, closing the power takeoff of the chassis of the pump truck and completing the transfer of the tank truck and the pump truck to the storage tank when the main control unit judges that the accumulated flow reaches the transfer target value or the liquid level value of the storage tank reaches the target liquid level value.

Wherein, in the transfer process, the high-flow fast transfer stage and the low-flow full-filling stage are included;

the high-flow quick transfer stage is that after the liquid path pipeline is filled with liquid, a liquid medium sensor on the liquid path pipeline sends a signal like the main control unit, the main control unit controls the flowmeter to start metering, the flowmeter feeds back the acquired instantaneous flow rate and accumulated flow to the main control unit, and the main control unit adjusts the opening of the proportional flow valve through the instantaneous flow rate to control the liquid flow rate to be relatively large;

and the small-flow full-filling stage is that when the transfer process is nearly completed, the main control unit adjusts the opening of the proportional flow valve to reduce the flow rate of liquid after judging through the accumulated flow or the liquid level value of the storage tank.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the transfer control system and the transfer control method are suitable for marshalling of the pump truck and the tank truck, full-automatic transfer control can be realized, the manual operation workload of personnel is effectively reduced, and the misoperation risk of the personnel is reduced.

Drawings

FIG. 1 is a schematic diagram of a transfer control system of the present invention.

Reference numerals:

1. a regulated power supply; 2. a display control unit; 3. a main control unit; 4. an operation panel; 5. a chassis power takeoff; 6. a proportional relief valve; 7. a proportional flow valve; 8. a magnetic pump; 9. a pump truck storage tank; 10. a tank car storage tank; 11. a pneumatic ball valve; 12. a tank car gas distribution table; 13. a storage tank; 14. a pump truck gas distribution table; 15. a storage battery; 16. an oil source pump; 17. a hydraulic motor.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a transfer control system and a transfer control method, aiming at the problems that the prior tank car and pump truck need manual operation and can not realize automation when transferring to a storage tank.

As shown in fig. 1, an embodiment of the present invention provides a transfer control system, which includes a tank truck, a pump truck, and a storage tank 13, where the transfer control system controls transfer among the pump truck, the tank truck, and the storage tank 13, and the transfer control system includes a voltage-stabilized power supply 1, a display control unit 2, a main control unit 3, and an operation panel 4;

the stabilized voltage supply 1 is used for stabilizing the output voltage of the storage battery so as to meet the power supply quality requirements of the display control unit 2, the main control unit 3 and the operation panel 4;

the main control unit 3 is used for controlling a controlled object in the transfer control system, acquiring, analyzing and processing control state information of the transfer control system, uploading the control state information to the display control unit 2 in real time aiming at the controlled object corresponding to the control state information, and the main control unit 3 completes corresponding functions after receiving a control instruction issued by the display control unit 2;

the display control unit 2 is used for receiving the control state information uploaded by the main control unit 3, sending a control command to the main control unit 3, displaying the state information of the transfer control system in the transfer process in real time, and storing the state information;

the operation panel 4 is used for indicating the flow state of the transfer control system, controlling the power-on and power-off of the transfer control system, and controlling the emergency stop of the transfer control system, and is used for supplementing, controlling and displaying part of key information of the display and control unit.

The transfer control system is suitable for marshalling pump trucks and tank trucks, can realize automatic control, and controls the tank trucks and the pump trucks to transfer to the storage tank 13 by utilizing the transfer control system. The stabilized voltage power supply adopts a DC-DC stabilized voltage power supply. In the transfer process, the main control unit collects the control state information of the controlled object, analyzes and processes the control state information, obtains a control strategy corresponding to the control state information, controls the controlled object according to the control strategy, realizes feedback control in the transfer process, is a closed transfer process, can realize full-automatic transfer control, effectively reduces the manual operation workload of personnel, and reduces the misoperation risk of the personnel.

The main control unit 3 of the transfer control system is a core component of the filling control system, runs main control software, and completes functions of various information acquisition, transfer flow control, emergency treatment and the like; controlling various controlled objects and acquiring information; the CAN bus is connected with the display control unit 2, the control state is uploaded in real time, and a control instruction sent by the display control unit 2 is received to complete a corresponding function; the operation panel 4 provides components and parts such as an indicator light and a switch button, the indicator light is used for indicating the flow state, the switch button and the display control unit 2 are configured to form control mode redundancy, a power switch is configured to realize the power-on/power-off function of the control system, and an emergency stop switch is configured to realize emergency stop processing of the system.

Wherein, the storage battery 15 is arranged on a chassis of the pump truck; or

The display control unit 2 displays at least one of the temperature information, the liquid level information, the pressure information and the valve state information of the state information packet displayed in real time.

The transfer control system of the invention supplies power through a pump truck storage battery 15, and supplies power to a display control unit 2, a main control unit 3 and an operation panel 4 after performing direct current voltage stabilization through a voltage stabilization power supply 1; displaying various information such as temperature, liquid level, pressure, valve state and the like in the transfer process in real time, and finishing the storage function of the acquired information; the display control unit 2 can perform the operation of each control function of the transfer.

The controlled object comprises a pump truck chassis power takeoff 5, a proportional overflow valve 6, a proportional flow valve 7, a flow meter, a pump truck sensor on a pump truck and a tank truck sensor on a tank truck;

after the pump truck chassis power takeoff 5 receives a connection or disconnection signal sent by the main control unit 3, the pump truck chassis power takeoff 5 finishes power takeoff or stops power takeoff; or

The proportional overflow valve 6 adjusts the hydraulic maximum pressure of the transfer control system, and controls the proportional flow valve 7 to adjust the rotating speed of the hydraulic motor, the rotating speed of the hydraulic motor is in direct proportion to the rotating speed of the magnetic pump, and the rotating speed of the magnetic pump is in positive correlation with the transfer speed of the transfer control system, namely the proportional flow valve is controlled to adjust the concentration speed; or

Liquid path pipelines are arranged between the pump truck and the storage tank 13 and between the tank truck and the pump truck, and the flow meters are used for collecting instantaneous flow rate and accumulated flow rate of transfer injection in the liquid path pipelines and uploading the instantaneous flow rate and the accumulated flow rate to the main control unit 3; or

The pump truck sensor comprises a pump truck temperature sensor, a pump truck pressure sensor and a pump truck liquid level sensor; or

The tank car sensor comprises a tank car temperature sensor, a tank car pressure sensor and a tank car liquid level sensor.

The control objects of the transfer control system comprise a pump truck chassis power takeoff 5, a proportional overflow valve 6, a proportional flow valve 7, a flowmeter, a pump truck sensor on a pump truck and a tank truck sensor on a tank truck. The transfer control system is suitable for a transfer system formed by a pump truck and a plurality of tank trucks, a chassis is used as a power source, the transfer control system outputs and controls the on-off of a chassis power takeoff 5 through a switching value, the chassis power takeoff 5 works after receiving a switching-on signal of the control system, the chassis power takeoff 5 drives a hydraulic oil source pump 16 to work, and the power takeoff is completed. The transfer control system controls the proportional overflow valve 6 to adjust the hydraulic maximum pressure through a PWM output function, controls the proportional flow valve 7 to adjust the rotating speed of the hydraulic motor 17, and controls the hydraulic motor 17 and the magnetic pump 8 of the pump truck in a mechanical connection mode, so that the rotating speed of the motor is positively correlated with the rotating speed of the magnetic pump 8 of the pump truck, power is provided by the magnetic pump 8 of the pump truck in the transfer process, and the control system controls the proportional overflow valve 6 to complete the adjustment of the transfer speed. The monitoring of the transfer speed is completed through a flowmeter arranged on a liquid path pipeline, the flowmeter can collect the instantaneous flow speed and the accumulated flow of the transfer liquid path and transmit the instantaneous flow speed and the accumulated flow to the main control unit 3 through a Modbus bus to be used as feedback in the closed-loop transfer process.

Wherein, the main control unit 3 can collect the level value of the storage tank 13.

Wherein, a liquid medium sensor is arranged on the liquid pipeline close to the storage tank 13;

the liquid medium sensor is used for collecting information of liquid flowing through the liquid medium sensor in the liquid pipeline and transmitting the information to the main control unit 3.

Wherein, a pneumatic ball valve 11 for controlling the on-off of the liquid in the liquid pipeline is arranged on the liquid pipeline; or

The main control unit 3 controls the on-off of the pneumatic ball valve 11 through a pump truck electromagnetic valve of a pump truck gas distribution platform 14 of a pump truck and a tank truck electromagnetic valve on a tank truck gas distribution platform 12 of a tank truck.

Wherein, the pump truck gas distribution platform 14 of the pump truck and the tank truck gas distribution platform 12 of the tank truck both adopt inert gas.

According to the transfer control system, on-off control of a pipeline is completed through the pneumatic ball valve 11 on the liquid pipeline, the main control unit 3 controls the on-off of the pneumatic ball valve 11 through the electromagnetic valve of the pump truck gas distribution platform 14 and the electromagnetic valve of the tank truck gas distribution platform 12, the gas distribution platform uses inert gas, and risks caused by leakage in the transfer process of gas with explosion risks can be solved. The magnetic pump 8 and the tank car storage tank 1310 are both provided with temperature, pressure and liquid level sensors for monitoring the state of the storage tank 13, and the liquid level value of the storage tank 13 can also be acquired by the main control unit 3 for judging the switching of the transfer speed at each stage.

The main control unit 3 adjusts the opening of the proportional overflow valve 6 according to the received instantaneous flow rate and the accumulated flow collected by the flowmeter, and adjusts the transfer speed of the transfer control system.

The transfer control system can realize feedback, in the transfer process, after a liquid pipeline is filled with liquid, a liquid medium sensor on the liquid pipeline sends a signal like a main control unit 3, the main control unit 3 controls a flowmeter to start metering, the flowmeter feeds back the acquired instantaneous flow rate and accumulated flow to the main control unit 3, the main control unit 3 compares the instantaneous flow rate adjustment with a preset flow rate, the rotation speed adjustment of a magnetic pump 8 of a pump truck is completed by adjusting the opening degree of a proportional flow valve 7, further the flow rate adjustment is realized, and closed-loop flow rate adjustment control is formed, at this stage, the transfer speed can be relatively high, and high-flow rapid transfer is realized; when the transfer process is nearly completed, the main control unit 3 is switched to a small flow rate stage meeting the transfer requirement after judging through the accumulated flow rate or the liquid level value of the storage tank 13, the main control unit 3 compares the instantaneous flow rate fed back by the flow meter with a preset small flow rate target value, and the rotation speed adjustment of the magnetic pump 8 of the pump truck is completed by adjusting the opening degree of the proportional flow valve 7, so that the flow rate adjustment is realized, and the closed-loop flow rate adjustment control is formed.

A transfer control method comprises a tank car, a pump car, a storage tank 13, a voltage-stabilized power supply 1, a display control unit 2, a main control unit 3 and an operation panel 4, and comprises the following steps:

starting the transfer, wherein the main control unit 3 receives an instruction of the display control unit 2 or detects a transfer power-on command of the operation panel 4, and the main control unit 3 controls the transfer to be started;

filling a pump, connecting a tank car storage tank pressurizing electromagnetic valve of a tank car gas distribution table 12 of a tank car, pressurizing a tank car storage tank 1310 of the tank car, communicating a gas pipeline and a liquid pipeline between the tank car and the pump car, enabling liquid in the tank car storage tank 1310 to flow into a pump car storage tank 9, and filling a magnetic pump 8 of the pump car with the liquid;

transferring, wherein the main control unit 3 controls a power takeoff 5 of a chassis of the pump truck to work, controls a proportional overflow valve 6 and a proportional flow valve 7 to be opened, extracts liquid in a magnetic pump 8, controls a pneumatic ball valve 11 of a liquid pipeline to be opened by the main control unit 3, communicates the liquid pipeline and a gas pipeline among the tank truck, the pump truck and a storage tank 13, and flows to the storage tank 13;

and (3) closing the transfer, closing the pneumatic ball valves 11 of the liquid pipeline and the gas pipeline, closing the proportional flow valve 7 and the proportional overflow valve 6, closing the power takeoff 5 of the pump truck chassis and completing the transfer of the tank truck and the pump truck to the storage tank 13 when the main control unit 3 judges that the accumulated flow reaches the transfer target value or the liquid level value of the storage tank 13 reaches the target liquid level value.

Wherein, in the transfer process, the high-flow fast transfer stage and the low-flow full-filling stage are included;

in the high-flow quick transfer stage, after the liquid pipeline is filled with liquid, a liquid medium sensor on the liquid pipeline sends a signal like the main control unit 3, the main control unit 3 controls the flowmeter to start metering, the flowmeter feeds back the acquired instantaneous flow rate and accumulated flow rate to the main control unit 3, and the main control unit 3 controls the liquid flow rate to be relatively large by adjusting the opening of the proportional flow valve 7 through the instantaneous flow rate;

the small flow full-filling stage is that when the transfer process is nearly completed, the main control unit 3 adjusts the opening degree of the proportional flow valve 7 to reduce the liquid flow rate after the main control unit 3 judges through the accumulated flow or the liquid level value of the storage tank 13.

The transfer control method comprises four stages of starting transfer, filling a pump, transferring and closing transfer. In the stage of starting the transfer, the main control unit 3 receives a CAN bus instruction of the display control unit 2, or detects that a transfer switch of the operation panel 4 is turned on, and starts the transfer. In the pump priming stage, the electromagnetic valve of the gas distribution table is connected, the tank car storage tank 1310 is pressurized to a preset value, and then the gas pipeline and the liquid pipeline between the tank car and the pump car are connected. In the transfer stage, the chassis power takeoff 5 controls the switching value to output high level, the chassis power takeoff 5 works, the hydraulic oil source pump 16 starts to rotate to generate power, the main control unit 3 outputs PWM to control the valve core of the proportional flow valve 7 to reach a preset opening degree, the valve core of the proportional flow valve 7 is controlled to reach an initial value of a transfer flow process, the hydraulic motor 17 starts to rotate and drives the magnetic pump 8 of the pump truck to rotate, a liquid path generates power to pump out liquid in the storage tank 13, the pneumatic ball valve 11 of the liquid path pipeline of the pump truck and the tank truck is controlled to be opened, the tank truck → the magnetic pump 8 of the pump truck → the liquid path pipeline and the gas path pipeline of the storage tank 13 are communicated, and at the moment, under the action of the magnetic pump 8 of the pump truck, the liquid flows to the storage. In the high-flow quick transfer stage of the transfer control method, the main control unit 3 compares the instantaneous flow rate fed back by the flowmeter with the preset flow rate, and completes the rotation speed regulation of the magnetic pump 8 of the pump truck by regulating the opening degree of the proportional flow valve 7, so as to realize the flow rate regulation and form closed-loop flow rate regulation control, and at this stage, the transfer speed can be relatively high, so that the high-flow quick transfer is realized; and in the small flow full-filling stage, after the accumulated flow of the flowmeter or the liquid level value of the fixed storage tank 13 is judged, the small flow is switched to meet the switching stage, the main control unit 3 compares the instantaneous flow rate fed back by the flowmeter with a preset small flow target value, and completes the rotation speed regulation of the magnetic pump 8 of the pump truck by regulating the opening degree of the proportional flow valve 7, so that the flow speed regulation is realized, and the closed-loop flow speed regulation control is formed.

Tank 13 of the present invention may be a fixed tank 13.

In the scheme, the transfer control system and the transfer control method can realize full-automatic transfer control, effectively reduce the manual operation workload of personnel and reduce the misoperation risk of the personnel; the closed transfer injection of toxic volatile liquid can be completed, and the safety is effectively improved; the metering of the transfer amount is realized through liquid level monitoring and flow monitoring, and the precision of the transfer amount is improved. The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

In the description of the present invention, it is to be understood that the terms "upper", "one end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that the terms "provided with" and "connected" are to be interpreted broadly, unless explicitly stated or limited otherwise. For example, the connection can be fixed, detachable or integrated; may be directly connected or indirectly connected through an intermediate. The fixed connection can be common technical schemes such as welding, threaded connection and clamping. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.