Valve control device of transport vehicle and transport vehicle

Abstract

The utility model relates to a valve control device of a transport vehicle and the transport vehicle. The control device comprises a PLC, a relay control unit, a button control unit, a first change-over switch and a power module. The relay control unit is used for controlling connection and disconnection between the power supply module and the first change-over switch according to a control signal output by the PLC; the button control unit is used for controlling connection and disconnection between the power supply module and the first change-over switch according to external control operation; the first change-over switch is used for controlling the relay control unit and the button control unit to be connected and disconnected with the switch valve according to external switching operation. According to the control system, automatic control over the switch valve on the transport vehicle is achieved through linkage of the PLC and the relay control unit, switching between automatic control and manual control is achieved through the first change-over switch, the control system can adapt to various application scenes, and the loading and unloading safety of the transport vehicle is improved.

Description

Technical Field

[0001] The present application belongs to the field of valve control, and specifically relates to a valve control device for a transport vehicle and a transport vehicle. Background Art

[0002] Transport vehicles are vehicles used for the storage and transportation of liquefied gas, including liquefied gas tank trucks, liquefied gas tank containers and horizontal liquefied gas storage tanks. Currently, manual control valves are used in the loading and unloading processes of transport vehicles, which poses a great safety hazard in the event of an emergency.

[0003] It can be seen that how to improve the loading and unloading safety of transport vehicles is an issue that needs to be solved urgently. Summary of the invention

[0004] The present application provides a valve control device for a transport vehicle and a transport vehicle, which realizes automatic control of a switch valve on the transport vehicle through the linkage of a PLC controller and a relay control unit, and realizes switching between automatic control and manual control through a first switching switch. It can not only adapt to a variety of application scenarios, but also improve the loading and unloading safety of the transport vehicle.

[0005] In a first aspect, the present application provides a valve control device for a transport vehicle, which is connected to a switch valve for loading and unloading fluid in a tank container, and the device includes: a PLC controller, a relay control unit, a button control unit, a first switching switch and a power module; a first end of the relay control unit is connected to a control end of the PLC controller, a second end of the relay control unit is connected to an output end of the power module, and a third end of the relay control unit is connected to a first end of the first switching switch, for controlling the on-off between the power module and the first switching switch according to a control signal output by the PLC controller; a first end of the button control unit is connected to the output end of the power module, and a second end of the button control unit is connected to a second end of the first switching switch, for controlling the on-off between the power module and the first switching switch according to an external control operation; a third end of the first switching switch is connected to a control end of the switch valve, for controlling the on-off of the relay control unit and the button control unit, respectively, with the switch valve according to an external switching operation.

[0006] Optionally, the device also includes: a second switching switch, a potentiometer and an isolator; the output end of the potentiometer is connected to the first end of the second switching switch through the isolator, and is used to output a corresponding adjustment signal according to an external adjustment operation; the second end of the second switching switch is connected to the control end of the PLC controller, and the third end of the second switching switch is connected to the opening control end of the regulating valve, and is used to control the on and off of the PLC controller, the potentiometer and the regulating valve respectively according to the external switching operation.

[0007] Optionally, the relay control unit includes a first relay and a second relay, and the button control unit includes a first button switch and a second button switch; the first switching switch includes a first sub-switch, a second sub-switch, a third sub-switch and a fourth sub-switch; the first end of the coil of the first relay is connected to the control end of the PLC controller, the second end of the coil of the first relay is connected to the output end of the power module, the first end of the switch of the first relay is connected to the output end of the power module, the second end of the switch of the first relay is connected to the first end of the first sub-switch, and the second end of the first sub-switch is connected to the opening control end of the switch valve; the first end of the coil of the second relay is connected to the control end of the PLC controller, and the second relay The second end of the coil is connected to the output end of the power module, the first end of the switch of the second relay is connected to the output end of the power module, the second end of the switch of the second relay is connected to the first end of the third sub-switch, and the second end of the third sub-switch is connected to the closing control end of the switch valve; the first end of the first button switch is connected to the output end of the power module, the second end of the first button switch is connected to the first end of the second sub-switch, and the second end of the second sub-switch is connected to the opening control end of the switch valve; the first end of the second button switch is connected to the output end of the power module, the second end of the second button switch is connected to the first end of the fourth sub-switch, and the second end of the fourth sub-switch is connected to the closing control end of the switch valve.

[0008] Optionally, the first sub-switch and the third sub-switch have the same on-off state, the second sub-switch and the fourth sub-switch have the same on-off state, and the first sub-switch and the second sub-switch have opposite on-off states.

[0009] Optionally, the device also includes: a first remote control switch, wherein the first end of the first remote control switch is connected to the output end of the power module, and the second end of the first remote control switch is connected to the opening control end of the switch valve, and is used to open the switch valve when a first remote control signal is received; a second remote control switch, wherein the first end of the second remote control switch is connected to the output end of the power module, and the second end of the second remote control switch is connected to the closing control end of the switch valve, and is used to close the switch valve when a second remote control signal is received.

[0010] Optionally, the second switching switch includes a fifth sub-switch and a sixth sub-switch, the first end of the fifth sub-switch is connected to the control end of the PLC controller, and the second end of the fifth sub-switch is connected to the opening control end of the regulating valve; the first end of the sixth sub-switch is connected to the output end of the potentiometer through the isolator.

[0011] Optionally, the power module includes: a power relay, a charger, a battery and an AC-DC converter; the input end of the charger is connected to the AC output end, and the output end of the charger is connected to the battery, for charging the battery with external AC power; the input end of the AC-DC converter is connected to the AC output end, for converting external AC power into target DC power; the first end of the coil of the power relay is connected to the input end of the AC-DC converter, the second end of the coil of the power relay is grounded, and the first end of the normally closed switch of the power relay is connected to the output end of the battery; wherein the second end of the normally closed switch of the power relay and the output end of the AC-DC converter are the output ends of the power module.

[0012] Optionally, the device also includes: at least one sensor module, connected to the PLC controller, for real-time monitoring of environmental parameters within the transport vehicle; or / and, a positioning module, connected to the PLC controller, for real-time monitoring of positioning information of the transport vehicle; or / and, a wireless communication module, connected to the PLC controller, for enabling communication between the PLC controller and an external terminal.

[0013] Optionally, the device further includes: a display device connected to the PLC controller, and used to display parameters output by the PLC controller.

[0014] In a second aspect, the present application provides a transport vehicle, wherein the transport vehicle comprises the valve control device of the transport vehicle described above.

[0015] The technical solution provided by this application has at least the following beneficial effects:

[0016] The present application realizes automatic control of the switch valve on the transport vehicle through the linkage of the PLC controller and the relay control unit, realizes manual control of the switch valve through the button control unit, and realizes switching between automatic control and manual control through the first switching switch; therefore, the present application can select the corresponding control method for the valve according to the actual scenario during loading and unloading, which is suitable for a variety of application scenarios while ensuring the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0018] Figure 1Shown is a schematic structural diagram of a valve control device for a transport vehicle provided in an embodiment of the present application.

[0019] Figure 2 Shown is a schematic structural diagram of another valve control device for a transport vehicle provided in an embodiment of the present application.

[0020] Figure 3 Shown is a schematic diagram of electrical connections of a valve control device for a transport vehicle provided in an embodiment of the present application;

[0021] Figure 4 The figure is a schematic diagram of an application scenario of a valve control device for a transport vehicle provided in an embodiment of the present application;

[0022] Figure 5 Shown Figure 4 Enlarged view of the control box.

[0023] Description of reference numerals:

[0024] 100, valve control device of transport vehicle; 110, PLC controller; 120, relay control unit; 130, button control unit; 140, first switching switch; 150, power module; 151, charger; 152, battery; 153 AC / DC converter; 154, wiring terminal; 160, second switching switch; 170, potentiometer; 180, isolator; 200, switch valve; 300, regulating valve;

[0025] KA, power relay; KA1, first relay; KA2, second relay; KA3, third relay; KA4, fourth relay; SB1, first push button switch; SB2, second push button switch; S1, first sub-switch; S2, second sub-switch; S3, third sub-switch; S4, fourth sub-switch; YC1, first remote control switch; YC2, second remote control switch; K1, switch valve; G1, isolator; D1, potentiometer; J1, regulating valve; SC, control switch; Z1, check valve;

[0026] P, pressure sensor; T, temperature sensor; LT, liquid level sensor; SD, temperature and humidity sensor; HMI, touch screen; L, indicator light; KZX, control box. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0028] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0030] Figure 1 FIG. 1 is a structural block diagram of a valve control device for a transport vehicle provided in an embodiment of the present application; Figure 1 As shown, the valve control device 100 of the transport vehicle is connected to the switch valve 200 for loading and unloading the tank container fluid, and the control device specifically includes:

[0031] A PLC controller 110, a relay control unit 120, a button control unit 130, a first switch 140 and a power module 150;

[0032] The first end of the relay control unit 120 is connected to the control end of the PLC controller 110, the second end of the relay control unit 120 is connected to the output end of the power module 150, and the third end of the relay control unit 120 is connected to the first end of the first switch 140, and is used to control the on-off between the power module 150 and the first switch 140 according to the control signal output by the PLC controller 110;

[0033] The first end of the button control unit 130 is connected to the output end of the power module 150, and the second end of the button control unit 130 is connected to the second end of the first switch 140, for controlling the on-off between the power module 150 and the first switch according to an external control operation;

[0034] The third end of the first switching switch 140 is connected to the control end of the switch valve 200, and is used to control the on and off of the relay control unit 120, the button control unit 130 and the switch valve 200 according to an external switching operation.

[0035] It should be noted that the button control unit 130 in this embodiment is a manual operation unit. When the button control unit 130 is in the first working state, the power module 150 is connected to the first switching switch 140; when the button control unit 130 is in the second working state, the power module 150 is disconnected from the first switching switch 140.

[0036] In this embodiment, the PLC controller 110 can be connected to an external terminal, receive a signal input by the external terminal, and output a corresponding control signal; for example, when the external terminal is a touch screen connected to the PLC controller 110, the user inputs a control instruction to open the valve or clicks a button to open the valve on the touch screen, and the PLC controller 110 outputs a first control signal based on the received control instruction to open the valve; wherein the external terminal can also be a mobile terminal, a remote server, etc.

[0037] In this embodiment, the power module 150 can not only provide power to the PLC controller 110, the relay control unit 120 and the switch valve 200, but also output a corresponding trigger signal to the switch valve 200, so that the switch valve 200 is opened or closed according to the corresponding trigger signal.

[0038] In this embodiment, the first switching switch 140 can be a mechanical switch controlled manually or an electronic switch controlled remotely; it includes two working states. When the first switching switch 140 is in the first working state, the relay control unit 120 is controlled to be connected with the switch valve 200, and the button control unit 130 is disconnected from the switch valve 200; when the first switching switch 140 is in the second working state, the button control unit 130 is controlled to be connected with the switch valve 200, and the relay control unit 120 is disconnected from the switch valve 200; that is, at the same time, the first switching switch 140 selects one control unit from the relay control unit 120 and the button control unit 130 to connect to the switch valve 200, thereby realizing the switching between automatic control and manual control of the switch valve 200; wherein, in this embodiment, the automatic control of the switch valve 200 is realized by the PLC controller 110 and the relay control unit 120, and the manual control of the switch valve 200 is realized by the button control unit 130.

[0039] The working principle of the valve control device for the transport vehicle provided in this embodiment is: when the first switching switch 140 is in the first working state (i.e., the automatic control state) through an external switching operation, the PLC controller 110 outputs a first control signal to the relay control unit 120, controls the relay control unit 120 to be turned on, so that the first power trigger signal output by the power module 150 passes through the relay control unit 120 and the first switching switch 140 to the switch valve 200; when the switch valve 200 receives the first power trigger signal, the valve is opened; further, when the switch valve 200 receives the second power trigger signal output by the power module 150, the valve is closed.

[0040] In addition, through external switching operation, the first switching switch 140 is placed in the second working state (i.e., the manual control state), and the button control unit 130 is manually operated to control the button control unit 130 to be turned on, so that the first power trigger signal output by the power module 150 passes through the button control unit 130 to the switch valve 200; when the switch valve 200 receives the first power trigger signal, the valve is opened; when the switch valve 200 receives the second power trigger signal output by the power module 150, the valve is closed.

[0041] Compared with the prior art, the technical solution provided by this embodiment has the following beneficial effects:

[0042] The present application realizes automatic control of the switch valve on the transport vehicle through the linkage of the PLC controller and the relay control unit, realizes manual control of the switch valve through the button control unit, and realizes switching between automatic control and manual control through the first switching switch; therefore, the present application can select the corresponding control method for the valve according to the actual scenario during loading and unloading, which is suitable for a variety of application scenarios while ensuring the safety of the operator.

[0043] In another embodiment of the present application, Figure 2 As shown, the valve control device 100 of the transport vehicle further includes:

[0044] A second switch 160, a potentiometer 170 and an isolator 180;

[0045] The output end of the potentiometer 170 is connected to the first end of the second switch 160 through the isolator 180, and is used to output a corresponding adjustment signal according to an external adjustment operation;

[0046] The second end of the second switching switch 160 is connected to the control end of the PLC controller 110, and the third end of the second switching switch 160 is connected to the opening control end of the regulating valve 300, which is used to control the on and off of the PLC controller 110, the potentiometer 170 and the regulating valve 300 according to the external switching operation.

[0047] It should be noted that the switch valve has only two states, open and closed, and cannot adjust the flow rate of the liquid or the pressure of the gas. The flow rate or pressure is then adjusted by adjusting the opening of the regulating valve 300; wherein the switch valve and the regulating valve 300 are arranged in series on the pipeline.

[0048] In this embodiment, there are two modes of regulating and controlling the regulating valve 300: manual and automatic. The manual control mode is composed of the potentiometer 170 and the isolator 180. The PLC controller 110 outputs the corresponding opening signal to realize the automatic control of the regulating valve 300. The switching between manual control and automatic control is realized by the second switching switch 160. The working principle of the second switching switch 160 is the same as that of the first switching switch, which will not be described here. In addition, the potentiometer 170 is a sliding rheostat that can be adjusted manually. The isolator 180 converts the analog signal output by the potentiometer 170 into a digital signal that can be recognized by the PLC controller 110.

[0049] In another embodiment of the present application, Figure 3 As shown, the relay control unit includes a first relay KA1 and a second relay KA2, the button control unit includes a first button switch SB1 and a second button switch SB2; the first switching switch includes a first sub-switch S1, a second sub-switch S2, a third sub-switch S3 and a fourth sub-switch S4;

[0050] The first end of the coil of the first relay KA1 is connected to the control end of the PLC controller, the second end of the coil of the first relay KA1 is connected to the output end of the power module 150, the first end of the switch of the first relay KA1 is connected to the output end of the power module 150, the second end of the switch of the first relay KA1 is connected to the first end of the first sub-switch S1, and the second end of the first sub-switch S1 is connected to the opening control end of the switch valve K1; the first end of the coil of the second relay KA2 is connected to the control end of the PLC controller, the second end of the coil of the second relay KA2 is connected to the output end of the power module 150, the first end of the switch of the second relay KA2 is connected to the output end of the power module 150, the second end of the switch of the second relay KA2 is connected to the first end of the third sub-switch S3, and the second end of the third sub-switch S3 is connected to the closing control end of the switch valve K1; wherein, Figure 3 The switch valve K1 in the Figure 1 The switch valve 200 in.

[0051] The first end of the first button switch SB1 is connected to the output end of the power module 150, the second end of the first button switch SB1 is connected to the first end of the second sub-switch S2, and the second end of the second sub-switch S2 is connected to the opening control end of the switch valve K1; the first end of the second button switch SB2 is connected to the output end of the power module 150, the second end of the second button switch SB2 is connected to the first end of the fourth sub-switch S4, and the second end of the fourth sub-switch S4 is connected to the closing control end of the switch valve K1.

[0052] The first sub-switch S1 and the third sub-switch S3 have the same opening and closing states, the second sub-switch S2 and the fourth sub-switch S4 have the same opening and closing states, and the first sub-switch S1 and the second sub-switch S2 have opposite opening and closing states.

[0053] It should be noted that if Figure 3 In the first switching switch shown in the figure, when the first switching switch is in the first working state, the first sub-switch S1 and the third sub-switch S3 are closed, and the second sub-switch S2 and the fourth sub-switch S4 are opened; Figure 3 The state of the first switching switch in the figure is named as the second working state. This embodiment takes the first working state as an example. Since the first sub-switch S1 and the third sub-switch S3 are in the closed state, the switch valve K1 is currently connected to the relay control unit 120, so the current mode is automatic control; the specific working process is: the PLC controller outputs a low level to the first end of the coil of the first relay KA1, the first relay KA1 is energized, and the normally open switch is attracted, so that the opening control end of the switch valve K1 is connected to the output end of the power module 150, and the first trigger signal output by the power module 150 is received, thereby opening the valve; in addition, the PLC controller outputs a low level to the first end of the coil of the second relay KA2, the second relay KA2 is energized, and the normally open switch is attracted, so that the closing control end of the switch valve K1 is connected to the output end of the power module 150, and the valve is closed when the second trigger signal output by the power module 150 is received.

[0054] Further, when the user operates the first switching switch to switch the first switching switch from the first working state to the second working state, the first sub-switch S1 and the third sub-switch S3 are disconnected, the second sub-switch S2 and the fourth sub-switch S4 are closed, and the switch valve K1 is connected to the button control unit, and the switch valve K1 is controlled by the button control unit; wherein the button control unit includes a first button switch SB1 for opening the switch valve K1, and a second button switch SB2 for closing the switch valve K1; when the first button switch SB1 is pressed, the opening control end of the switch valve K1 is connected to the output end of the power module 150, and the valve is opened when the first trigger signal output by the power module 150 is received; when the second button switch SB2 is pressed, the closing control end of the switch valve K1 is connected to the output end of the power module 150, and the valve is closed when the second trigger signal output by the power module 150 is received.

[0055] In one embodiment of the present application, the device further comprises:

[0056] A first remote control switch YC1, wherein a first end of the first remote control switch YC1 is connected to an output end of the power module 150, and a second end of the first remote control switch YC1 is connected to an opening control end of the switch valve K1, and is used to open the switch valve K1 when receiving a first remote control signal;

[0057] The second remote control switch YC2, the first end of the second remote control switch YC2 is connected to the output end of the power module 150, and the second end of the second remote control switch YC2 is connected to the closing control end of the switch valve K1, and is used to close the switch valve K1 when receiving a second remote control signal.

[0058] It should be noted that the first remote control switch YC1 and the second remote control switch YC2 can be wireless receiver switches, such as infrared receiver switches, Bluetooth receiver switches or radio frequency receiver switches; when the first remote control switch YC1 receives the first remote control signal (i.e., the opening signal), it is in a closed state, so that the opening control end of the switch valve K1 receives the opening trigger signal (i.e., the first trigger signal) output by the power module 150, and opens the valve; further, when the second remote control switch YC2 receives the second remote control signal (i.e., the closing signal), it is in a closed state, so that the closing control end of the switch valve K1 receives the closing trigger signal (i.e., the second trigger signal) output by the power module 150, and closes the valve.

[0059] It should be noted that, in this embodiment, the switch valve K1 includes an opening control end and a closing control end. When the opening control end receives an opening trigger signal (i.e., a first trigger signal), the valve is opened; when the closing control end receives a closing trigger signal (i.e., a second trigger signal), the valve is closed; therefore, the opening and closing of the switch valve K1 are controlled independently of each other, that is, after the opening control end receives an opening trigger signal and opens the valve, the valve can only be closed by sending a closing trigger signal to the closing control end; in addition, after the opening control end receives an opening trigger signal, if the state of the switch valve K1 needs to be changed, the opening trigger signal needs to be eliminated and then a new trigger signal needs to be sent, and then the state of the switch valve will change.

[0060] In actual application scenarios, there may be multiple switch valves in a liquefied gas transport vehicle, and the control principle of each switch valve is the same, such as Figure 3 As shown: the three switch valves K1 are independently controlled by a PLC controller, three relay control units, and three button control units.

[0061] The first switching switch corresponding to each switch valve may be a switch independent of each other, or may be an integrated switch, that is, when the first switching switch is in the first working state, the three switch valves K1 are in automatic control mode.

[0062] In an embodiment of the present application, the second switching switch includes a fifth sub-switch S5 and a sixth sub-switch S6, the first end of the fifth sub-switch S5 is connected to the control end of the PLC controller, and the second end of the fifth sub-switch S5 is connected to the opening control end of the regulating valve; the first end of the sixth sub-switch S6 is connected to the output end of the potentiometer D1 through the isolator G1.

[0063] It should be noted that the second switch can be a mechanical switch controlled manually or an electronic switch controlled remotely; it includes two working states. When the second switch is in the first working state, Figure 3 As shown, the fifth sub-switch S5 is in a closed state and the sixth sub-switch S6 is in an open state; on the contrary, when the second switching switch is in the second working state, the fifth sub-switch S5 is in an open state and the sixth sub-switch S6 is in a closed state, thereby realizing the switching between the PLC controller and the potentiometer, and achieving the purpose of switching between automatic and manual control of the regulating valve opening.

[0064] In practical applications, there may be multiple situations in which the regulating valve is adaptively adjusted according to the number of switch valves. The phase potentiometers and isolators correspond to the number of regulating valves, that is, one potentiometer is connected to one isolator, and one isolator is connected to one regulating valve, such as Figure 3As shown: three potentiometers D1 and three isolators G1 are connected to three regulating valves J1 one by one through the second switching switch; however, the specific form of the second switching switch can exist in the following two situations:

[0065] (1) Each regulating valve can be controlled one by one by a second switching switch: that is, the second switching switches corresponding to each regulating valve are independent of each other.

[0066] (2) All regulating valves are controlled by a second switching switch: that is, when the second switching switch is in the first working state, the three regulating valves T1 are in the automatic regulation mode.

[0067] In one embodiment of the present application, the power module 150 includes:

[0068] Power relay KA, charger 151, battery 152 and AC / DC converter 153;

[0069] The input end of the charger 151 is connected to the AC power output end, and the output end of the charger 151 is connected to the battery 152, so as to charge the battery 152 through external AC power;

[0070] The input end of the AC / DC converter 153 is connected to the AC power output end, and is used to convert the external AC power into the target DC power;

[0071] A first end of the coil of the power relay KA is connected to the input end of the AC / DC converter 153, a second end of the coil of the power relay KA is grounded, and a first end of the normally closed switch of the power relay KA is connected to the output end of the battery 152;

[0072] The normally closed switch second end of the power relay KA and the output end of the AC / DC converter 153 are the output ends of the power module.

[0073] It should be noted that the working principle of the power module in this embodiment is as follows: when there is AC output at the external AC output terminal, the power relay KA is energized to release the normally closed switch, disconnecting the path between the battery 152 and the subsequent load, so that the AC-DC converter 153 converts the 220V AC into DC of various voltage values ​​to power the subsequent load. At the same time, the external input AC also charges the battery 152 through the charger 151; this power supply mode is mainly used when the transport vehicle is parked at gas stations, charging stations, loading and unloading stations and other places with AC input. When there is no AC output at the external AC output terminal, the power relay KA loses power and closes the normally closed switch, so that the battery 152 supplies power to the subsequent load; this power supply mode is mainly used in the normal driving process of the transport vehicle; therefore, this embodiment provides automatic switching between two power supply modes to ensure the normal operation of the valve control device.

[0074] In another embodiment of the present application, the power module further includes a control switch SC and a wiring terminal 154, the first end of the control switch is connected to the second end of the normally closed switch of the power relay KA, the second end of the control switch is connected to the wiring terminal 154, and the control switch is a manual switch, mainly to ensure the power safety of the battery 152. The wiring terminal 154 in this embodiment includes multiple terminals, such as instrument power supply terminals, valve power supply terminals, trigger signal output terminals, etc., and different terminals can correspond to different output voltages; the power module further includes a voltage conversion unit, which is used to convert the voltage output by the battery 152 and the AC / DC converter 153 into multiple voltages, so that different wiring terminals 154 output different voltages.

[0075] In one embodiment of the present application, the device further includes: at least one sensor module, connected to the PLC controller, for monitoring environmental parameters in the transport vehicle in real time.

[0076] It should be noted that if Figure 3 As shown, the at least one sensor module includes but is not limited to a pressure sensor P, a temperature sensor T, a liquid level sensor LT and a temperature and humidity sensor SD, and the number of sensors of each type is unlimited, and each sensor is connected to the PLC controller through an isolator G1, so that the PLC controller controls the closing and opening of the switch valve according to the temperature parameters, humidity parameters, pressure parameters and liquid level parameters in the transport vehicle, and can automatically control the loading and unloading of the liquid when the environmental parameters in the transport vehicle are abnormal, avoiding safety hazards.

[0077] In one embodiment of the present application, the device also includes a positioning module, which is connected to the PLC controller and is used to monitor the positioning information of the transport vehicle in real time, so that the PLC controller can control the valve only when the vehicle arrives at the loading and unloading station according to the positioning information of the transport vehicle, thereby effectively avoiding possible misoperation outside the loading and unloading station.

[0078] In one embodiment of the present application, the device further includes a wireless communication module connected to the PLC controller for enabling the PLC controller to communicate with an external terminal, so that the PLC controller can receive vehicle rental information input by the external terminal and automatically control the valve according to the current rental status; that is, in the abnormal rental state, the control program, control box door and rear box door will be automatically locked, and filling and unloading are prohibited. Rental anomalies include: 1. The lease of tank trucks and tank containers expires and is not renewed; 2. Tank trucks and tank containers are not used within the specified area; 3. They are not handed over to the lessor for regular inspection within the specified time, etc.

[0079] In one embodiment of the present application, the device further includes a display device connected to the PLC controller for displaying the parameters output by the PLC controller; wherein the display device may be a touch screen HMI or a digital display.

[0080] In one embodiment of the present application, the device also includes a third relay KA3 and a fourth relay KA4, the coil end of the third relay KA3 and the coil end of the fourth relay KA4 are respectively connected to the output end of the switch valve, and the switch ends of the third relay KA3 and the fourth relay KA4 are respectively connected to the indicator light L and the PLC controller, so that the opening feedback signal and the closing feedback signal output by the switch valve are fed back to the indicator light L and the PLC controller through the third relay KA3 and the fourth relay KA4.

[0081] In one embodiment of the present application, a transport vehicle is provided, the transport vehicle comprising the valve control device of the transport vehicle described in the above embodiment; Figure 4 and Figure 5 As shown, the transport vehicle includes 2 unloading branches and 1 filling branch, each of which includes a check valve Z1, a switch valve K1 and a regulating valve J1; wherein the check directions of the check valves in the unloading branch and the filling branch are different. A temperature and humidity sensor SD and a smart door lock MS are arranged at the rear of the vehicle, and multiple temperature sensors T and multiple pressure sensors P are arranged at different places in the vehicle compartment. The valve control device also has a control box KZX, on which a touch screen HMI, a digital display SXB, multiple indicator lights L for displaying the status of the switch valve and the regulating valve, multiple groups of button switches SB1 and SB2, and multiple groups of switching switches SW1 and SW2 are arranged. Each button switch controls and the switching switch controls the corresponding switch valve or regulating valve respectively.

[0082] The transport vehicle provided in this embodiment can effectively monitor and display the data such as pressure, temperature and liquid level in the tank in real time during filling, unloading, transportation and leasing. When the data is abnormal or the instrument data is invalid, an alarm will be given in time to give warning signals to the driver, operator and monitoring platform; two sets of manual and automatic control modes are provided on the control box, and the two sets of control modes do not interfere with each other and are isolated from each other by rotary switches and intermediate relays. The automatic control mode can be realized in the PLC and HMI systems, and the loading and unloading mode and the loading and unloading value (pressure) can be quickly set according to the actual situation; in manual operation, most of the functions in the automatic mode can be realized by rotating switches and buttons; feedback indicator lights and valve opening digital displays are set, and the status of each valve and instrument can be effectively confirmed in both manual and automatic modes.

[0083] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third" may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0084] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A valve control device for a transport vehicle, connected to a switch valve for loading and unloading fluid in a tank container, characterized in that: The device comprises: A PLC controller, a relay control unit, a button control unit, a first switching switch and a power module; The first end of the relay control unit is connected to the control end of the PLC controller, the second end of the relay control unit is connected to the output end of the power module, and the third end of the relay control unit is connected to the first end of the first switch, and is used to control the on-off between the power module and the first switch according to the control signal output by the PLC controller; The first end of the button control unit is connected to the output end of the power module, and the second end of the button control unit is connected to the second end of the first switch, for controlling the on-off between the power module and the first switch according to an external control operation; The third end of the first switching switch is connected to the control end of the switch valve, and is used to control the on and off of the relay control unit and the button control unit respectively with the switch valve according to an external switching operation.

2. The valve control device for a transport vehicle according to claim 1, characterized in that: The device also includes: a second switching switch, a potentiometer and an isolator; The output end of the potentiometer is connected to the first end of the second switch through the isolator, and is used to output a corresponding adjustment signal according to an external adjustment operation; The second end of the second switching switch is connected to the control end of the PLC controller, and the third end of the second switching switch is connected to the opening control end of the regulating valve, which is used to control the on and off of the PLC controller, the potentiometer and the regulating valve respectively according to the external switching operation.

3. The valve control device for a transport vehicle according to claim 1, characterized in that: The relay control unit includes a first relay and a second relay, the button control unit includes a first button switch and a second button switch; the first switching switch includes a first sub-switch, a second sub-switch, a third sub-switch and a fourth sub-switch; The first end of the coil of the first relay is connected to the control end of the PLC controller, the second end of the coil of the first relay is connected to the output end of the power module, the first end of the switch of the first relay is connected to the output end of the power module, the second end of the switch of the first relay is connected to the first end of the first sub-switch, and the second end of the first sub-switch is connected to the opening control end of the switch valve; the first end of the coil of the second relay is connected to the control end of the PLC controller, the second end of the coil of the second relay is connected to the output end of the power module, the first end of the switch of the second relay is connected to the output end of the power module, the second end of the switch of the second relay is connected to the first end of the third sub-switch, and the second end of the third sub-switch is connected to the closing control end of the switch valve; The first end of the first button switch is connected to the output end of the power module, the second end of the first button switch is connected to the first end of the second sub-switch, and the second end of the second sub-switch is connected to the opening control end of the switch valve; the first end of the second button switch is connected to the output end of the power module, the second end of the second button switch is connected to the first end of the fourth sub-switch, and the second end of the fourth sub-switch is connected to the closing control end of the switch valve.

4. The valve control device for a transport vehicle according to claim 3, characterized in that: The first sub-switch and the third sub-switch have the same opening and closing states, the second sub-switch and the fourth sub-switch have the same opening and closing states, and the first sub-switch and the second sub-switch have opposite opening and closing states.

5. The valve control device for a transport vehicle according to claim 1, characterized in that: The device also includes: a first remote control switch, wherein a first end of the first remote control switch is connected to an output end of the power module, and a second end of the first remote control switch is connected to an opening control end of the switch valve, and is used to open the switch valve when a first remote control signal is received; A second remote control switch, wherein the first end of the second remote control switch is connected to the output end of the power module, and the second end of the second remote control switch is connected to the closing control end of the switch valve, and is used to close the switch valve when a second remote control signal is received.

6. The valve control device for a transport vehicle according to claim 2, characterized in that: The second switching switch includes a fifth sub-switch and a sixth sub-switch, the first end of the fifth sub-switch is connected to the control end of the PLC controller, and the second end of the fifth sub-switch is connected to the opening control end of the regulating valve; the first end of the sixth sub-switch is connected to the output end of the potentiometer through the isolator.

7. The valve control device for a transport vehicle according to claim 1, characterized in that: The power module comprises: Power relays, chargers, batteries and AC / DC converters; The input end of the charger is connected to the AC power output end, and the output end of the charger is connected to the battery, so as to charge the battery through external AC power; The input end of the AC / DC converter is connected to the AC power output end, and is used to convert external AC power into target DC power; A first end of the coil of the power relay is connected to the input end of the AC / DC converter, a second end of the coil of the power relay is grounded, and a first end of the normally closed switch of the power relay is connected to the output end of the battery; Wherein, the normally closed switch second end of the power relay and the output end of the AC / DC converter are the output ends of the power module.

8. The valve control device for a transport vehicle according to claim 1, characterized in that: The device also includes: At least one sensor module, connected to the PLC controller, for real-time monitoring of environmental parameters within the transport vehicle; Or / and, a positioning module, connected to the PLC controller, for real-time monitoring of the positioning information of the transport vehicle; Or / and, a wireless communication module, connected to the PLC controller, for enabling the PLC controller to communicate with an external terminal.

9. The valve control device for a transport vehicle according to claim 1, characterized in that: The device also includes: The display device is connected to the PLC controller and is used to display the parameters output by the PLC controller.

10. A transport vehicle, characterized in that: The transport vehicle comprises the valve control device for a transport vehicle according to any one of claims 1-9.

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