Tank car filling control system, tank car and filling control method

Abstract

The invention provides a filling control system of a tank car, the tank car and a control method. The filling control system of the tank car comprises a connecting pipeline, a first control valve, detection equipment and a controller. And the connecting pipeline is communicated between the driving gas source and the emergency cut-off control valve group on the tank body, so that the driving gas source can drive the emergency cut-off control valve group to be switched on or switched off. Meanwhile, the first control valve is arranged on the connecting pipeline so as to control connection or disconnection of the connecting pipeline. The detection device is installed on the tank car and used for detecting safety signals. The controller is electrically connected with the detection equipment and the first control valve to receive the safety signal and control the first control valve to be switched off through the safety signal, and when the first control valve is switched off, the emergency cut-off control valve set is switched off, so that the safety of filling and discharging of the tank body is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile tank trucks, and in particular to a tank truck filling control system, a tank truck and a filling control method. Background Art

[0002] In the field of flammable and explosive gases, such as liquefied petroleum gas, LNG, etc., tank trucks used to fill the liquid or liquefied gas have complex working environments and operating conditions. In order to ensure the safety of the tank trucks and tank bodies, the tank trucks or tank bodies are equipped with emergency shut-off devices. When an emergency occurs during the loading and unloading process of the tank trucks or tank bodies, the emergency shut-off devices can close the filling valve in time to ensure the safety of the operation.

[0003] At present, a hand-pull emergency cut-off control system is often used on tank trucks, which drives a hand-pull brake line through a ratchet to emergency cut off the filling valve. An operation box is generally set on the tank truck, and a handle is set in the operation box. Under normal loading and unloading conditions, the handle can control the conduction or disconnection of the filling valve through the brake line. At the same time, a control handle that can control the filling valve is also configured at the rear of the tank truck, which is connected to the filling valve through the brake line to control the conduction or disconnection of the filling valve.

[0004] However, the wiring of the hand-pull emergency cut-off control system is complicated. If the wire is stuck in the middle, it will affect the conduction or disconnection of the filling valve. At the same time, the wire is easy to rust or break during use, and when the emergency cut-off control system is blocked by debris, it will cause the emergency cut-off control system to fail to work properly, thereby affecting the conduction or disconnection of the filling valve and affecting the efficiency and safety of tank truck loading and unloading operations. Summary of the invention

[0005] The object of the present invention is to provide a filling control system for a tank truck, which can control the on or off of a filling valve and avoid the influence of a gate line, so as to improve the safety of filling and discharging of a tank truck or a tank body.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, the present invention provides a filling control system for a tank truck, comprising: a connecting pipeline, one end of which is used to connect to a driving gas source, and the other end is used to connect to an emergency shut-off control valve group of a tank body; a first control valve, arranged on the connecting pipeline; a detection device, which is installed on the tank truck to detect a safety signal on the tank truck; the safety signal includes at least one of the speed of the tank truck and the gas concentration around the tank body; a controller, which is electrically connected to the detection device and is used to receive the safety signal detected by the detection device, and the controller is electrically connected to the first control valve and is used to control the first control valve to be shut off according to the safety signal to shut off the emergency shut-off control valve group.

[0008] In one embodiment of the present application, a control valve assembly is provided downstream of the first control valve; the control valve assembly includes a main control valve, a charging control valve, a discharge control valve and a gas phase control valve, the main control valve is connected to the first control valve, and the charging control valve, the discharge control valve and the gas phase control valve are respectively connected to the main control valve; the charging control valve is connected to the charging valve of the emergency cut-off control valve group, the discharge control valve is connected to the discharge valve of the emergency cut-off control valve group, and the gas phase control valve is connected to the gas phase valve of the emergency cut-off control valve group.

[0009] In one embodiment of the present application, two groups of control valve assemblies are arranged downstream of the first control valve, the two groups of control valve assemblies are respectively arranged on the main driving side and the co-driving side of the tank truck, and the two groups of control valve assemblies are connected to the emergency cut-off control valve group.

[0010] In one embodiment of the present application, the connecting pipeline is also provided with an air cylinder and an air source valve; the air cylinder is used to store the driving air source; the air cylinder is connected to the first control valve through the air source valve, so that the air source valve can cut off or open the pipeline between the air cylinder and the first control valve.

[0011] In one embodiment of the present application, the connecting pipeline is also provided with a one-way valve; the inlet end of the one-way valve is connected to the driving air circuit, and the outlet end of the one-way valve is connected to the air storage cylinder, so that the driving air source flows from the driving air circuit to the air storage cylinder in one direction.

[0012] In one embodiment of the present application, the connecting pipeline is further provided with a filter; the filter is connected upstream of the first control valve to filter the driving gas source.

[0013] In one embodiment of the present application, the connecting pipeline is further provided with a pressure regulator; the pressure regulator is connected upstream of the first control valve to adjust the output gas pressure of the connecting pipeline.

[0014] In one embodiment of the present application, the filling control system of the tank truck also includes a second control valve; the second control valve is connected between the first control valve and the control valve assembly, and is communicatively connected to a control console so that the control console can remotely control the opening or closing of the second control valve, and when the second control valve is closed, the emergency cut-off control valve group is closed.

[0015] The present application also provides a tank truck, which includes a tank body, a vehicle body, and a filling control system of any of the tank trucks; the tank body is installed on the vehicle body for storing a medium; the tank body is connected to the emergency cut-off control valve group for loading or discharging the medium; the filling control system of the tank truck is installed on the vehicle body and connected to the emergency cut-off control valve group to control the conduction or shutoff of the emergency cut-off control valve group.

[0016] In one embodiment of the present application, the tank truck also includes a driving cylinder; the driving cylinder is connected to the output end of the connecting pipeline so that the driving cylinder can be extended and retracted under the drive of the driving air source; the driving cylinder is installed on the emergency cut-off control valve group, and the output end of the driving cylinder is connected to the push rod of the emergency cut-off control valve group, so that the driving cylinder can drive the push rod to rotate and shut off the emergency cut-off control valve group.

[0017] The present application also provides a tank truck filling control method, which is applicable to any of the tank truck filling control systems; the control method comprises:

[0018] Providing a driving gas source to the emergency cut-off control valve group through the connecting pipeline;

[0019] The detection device detects a safety signal on the tank truck; the safety signal includes at least one of the speed of the tank truck and the gas concentration around the tank body;

[0020] The controller receives the safety signal detected by the detection device, and controls the first control valve to close according to the safety signal, thereby closing the emergency cut-off control valve group.

[0021] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0022] In the present invention, the filling control system of the tank truck includes a connecting pipeline, a first control valve, a detection device and a controller. Among them, the connecting pipeline is connected between the driving gas source and the emergency cut-off control valve group on the tank body, so that the driving gas source can drive the conduction or shutoff of the emergency cut-off control valve group. At the same time, the first control valve is arranged on the connecting pipeline to control the conduction or shutoff of the connecting pipeline. The detection device is installed on the tank truck for detecting safety signals. The controller electrically connects the detection device and the first control valve to receive the safety signal, and controls the shutoff of the first control valve through the safety signal, and when the first control valve is shut off, the emergency cut-off control valve group is shut off, thereby ensuring the safety of tank filling and discharge.

[0023] At the same time, the filling control system controls the supply of the driving air source, and then controls the conduction or shutdown of the emergency cut-off control valve group, thereby avoiding the problems of complicated gate line routing and gate line getting stuck in the middle of the hand-pull emergency cut-off control system, and ensuring the timeliness and safety of the emergency cut-off control valve group control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of a tank truck and a filling control system of the tank truck according to an embodiment of the present invention.

[0025] Figure 2 yes Figure 1 A partial schematic diagram of a tank truck.

[0026] Figure 3 yes Figure 1 Schematic diagram of the filling control system.

[0027] Figure 4 yes Figure 1 Schematic diagram of the filling valve of the emergency shut-off control valve group of the tank truck.

[0028] The following are the descriptions of the reference numerals:

[0029] 1-connecting pipeline; 2-tank; 3-emergency cut-off control valve group; 4-vehicle body; 11-first control valve; 12-control valve assembly; 13-air reservoir; 14-air source valve; 15-check valve; 16-filter; 17-pressure regulator; 18-second control valve; 30-driving cylinder; 32-charging valve; 33-discharge valve; 34-gas phase valve; 41-driver's side; 42-passenger's side; 121-main control valve; 122-charging control valve; 123-discharge control valve; 124-gas phase control valve; 301-push rod; 302-reset spring. DETAILED DESCRIPTION

[0030] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0031] In the description of the present invention, it is to be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0032] In addition, the terms "first" and "second" 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] At present, a hand-pull emergency cut-off control system is often used on tank trucks, which drives a hand-pull brake line through a ratchet to emergency cut off the filling valve. An operation box is generally set on the tank truck, and a handle is set in the operation box. Under normal loading and unloading conditions, the handle can control the conduction or disconnection of the filling valve through the brake line. At the same time, a control handle that can control the filling valve is also configured at the rear of the tank truck, which is connected to the filling valve through the brake line to control the conduction or disconnection of the filling valve.

[0034] However, the wiring of the hand-pull emergency cut-off control system is complicated. If the wire is stuck in the middle, it will affect the conduction or disconnection of the filling valve. At the same time, the wire is easy to rust or break during use, and when the emergency cut-off control system is blocked by debris, it will cause the emergency cut-off control system to fail to work properly, thereby affecting the conduction or disconnection of the filling valve and affecting the efficiency and safety of tank truck loading and unloading operations.

[0035] Therefore, a filling control system for a tank truck is proposed to solve the above problems.

[0036] The scheme is further illustrated by the following examples:

[0037] Figure 1 Schematic diagram of a tank truck and a filling control system of the tank truck according to an embodiment of the present invention. Figure 2 yes Figure 1 A partial schematic diagram of a tank truck.

[0038] See also Figure 1 and Figure 2 The tank truck of this embodiment may include a tank body 2, an emergency shut-off control valve group 3, a vehicle body 4 and a filling control system of the tank truck.

[0039] Among them, the tank body 2 is used to store media, such as LNG, petroleum gas, etc. The tank body 2 is installed on the vehicle body 4 so that the tank body 2 can move with the vehicle body 4 to complete the transportation of the medium. The tank body 2 is connected to the emergency cut-off control valve group 3 for loading or discharging the medium. Specifically, the emergency cut-off control valve group 3 may include a plurality of valves to facilitate the filling or discharge of the medium in the tank body 2. The filling control system of the tank truck is installed on the vehicle body 4 and is connected to the emergency cut-off control valve group 3 to control the conduction or shutoff of the emergency cut-off control valve group 3.

[0040] It should be noted that a cab is also provided at the front of the vehicle body 4 for controlling the driving of the vehicle body 4.

[0041] Figure 3 yes Figure 1 Schematic diagram of the filling control system.

[0042] See also Figure 3 The filling control system of the tank truck may include a connecting pipeline 1, a first control valve 11, a detection device and a controller.

[0043] Among them, one end of the connecting pipeline 1 is used to connect the driving gas source, and the other end is used to connect to the emergency cut-off control valve group 3 of the tank body 2, so that the connecting pipeline 1 can guide the flow of the driving gas source and enable the driving gas source to drive the emergency cut-off control valve group 3 to be turned on or off.

[0044] It should be noted that the driving air source can be supplied by the driving air circuit on the vehicle body 4 or by a separate air source tank to provide the driving air source to the connecting pipeline 1, so that the driving air source can drive the emergency cut-off control valve group 3 to be turned on or off.

[0045] In this embodiment, when the connecting pipeline 1 provides a driving gas source to the emergency cut-off control valve group 3 and forms pressure on the emergency cut-off control valve group 3, the emergency cut-off control valve group 3 is turned on. When the passage in the connecting pipeline 1 is cut off so that the driving gas source cannot form pressure on the emergency cut-off control valve group 3, the emergency cut-off control valve group 3 is turned off.

[0046] The first control valve 11 is disposed on the connecting pipeline 1 to control the connection or disconnection of the connecting pipeline 1 by turning on or off the first control valve 11 , thereby controlling the connection or disconnection of the emergency cut-off control valve group 3 .

[0047] It should be noted that the first control valve 11 can be configured as a solenoid valve or a pneumatic valve, so that the first control valve 11 can open or close the connecting pipeline 1 .

[0048] The detection device is installed on the tank truck to detect the safety signal on the tank truck. The controller is electrically connected to the detection device to receive the safety signal detected by the detection device. At the same time, the controller is electrically connected to the first control valve 11 to control the first control valve 11 to close according to the safety signal to close the emergency cut-off control valve group 3.

[0049] In this embodiment, the safety signal may include at least one of the speed of the tank truck and the gas concentration around the tank body 2, that is, the detection equipment may include a concentration sensor for detecting the gas concentration and a speed sensor for detecting the driving speed, and the safety signal may include a speed signal and a concentration signal.

[0050] Specifically, a plurality of concentration sensors may be provided, and they may be respectively provided on each valve of the emergency cut-off control valve group 3 to detect whether a medium leaks at the valve. Of course, the concentration sensor may also be provided on the peripheral side of the tank body 2 to detect whether a medium leaks on the peripheral side of the tank body 2. When the concentration signal value detected by the concentration sensor exceeds a preset value, the controller controls the first control valve 11 to be closed, and further controls the emergency cut-off control valve group 3 to be closed, so as to stop the filling or discharge of the tank body 2 and ensure the safety of the tank body 2.

[0051] In addition, the speed sensor can be installed on the vehicle body 4 or on the tank body 2 to detect the driving speed of the tank body 2 and the vehicle body 4. For example, when the driving speed is greater than 5 km / h, the speed sensor transmits the collected speed signal to the controller, and the controller controls the first control valve 11 to be closed through the speed signal, and then controls the emergency cut-off control valve group 3 to be closed to stop the filling or discharge of the tank body 2, thereby avoiding the risk of medium leakage caused by accidental movement of the vehicle during the filling and unloading process, and ensuring the safety of the tank body 2.

[0052] See also Figure 2 and Figure 3 A control valve assembly 12 may be provided downstream of the first control valve 11. The control valve assembly 12 is connected to the connecting pipeline 1 to control the connection or disconnection of the connecting pipeline 1.

[0053] Specifically, the control valve assembly 12 includes a main control valve 121, a charging control valve 122, a discharge control valve 123 and a gas phase control valve 124. The main control valve 121 is connected to the first control valve 11, and the charging control valve 122, the discharge control valve 123 and the gas phase control valve 124 are respectively connected to the main control valve 121, that is, the charging control valve 122, the discharge control valve 123 and the gas phase control valve 124 are all located downstream of the main control valve 121.

[0054] In this embodiment, the main control valve 121, the filling control valve 122, the discharge control valve 123 and the gas phase control valve 124 are all manual control valves, so that the operator can manually open or close the main control valve 121, the filling control valve 122, the discharge control valve 123 and the gas phase control valve 124.

[0055] In addition, the emergency shut-off control valve group 3 can be provided with a filling valve 32, a discharge valve 33 and a gas phase valve 34, wherein the filling valve 32 can be used to fill the tank body 2 with medium, the discharge valve 33 can be used to discharge the medium in the tank body 2, and the gas phase valve 34 can be used to balance the pressure in the tank body 2.

[0056] In this embodiment, the charging control valve 122 is connected to the charging valve 32 , the discharge control valve 123 is connected to the discharge valve 33 , and the gas phase control valve 124 is connected to the gas phase valve 34 .

[0057] Therefore, after opening the main control valve 121 and the charging control valve 122, the charging valve 32 can be turned on by the driving gas source in the connecting pipeline 1; after opening the main control valve 121 and the discharge control valve 123, the discharge valve 33 can be turned on by the driving gas source in the connecting pipeline 1; after opening the main control valve 121 and the gas phase control valve 124, the gas phase valve 34 can be turned on by the driving gas source in the connecting pipeline 1.

[0058] Similarly, when at least one of the main control valve 121 and the filling control valve 122 is shut off, the filling valve 32 is shut off due to the lack of driving air source for the filling valve 32; when at least one of the main control valve 121 and the discharge control valve 123 is shut off, the discharge valve 33 is shut off due to the lack of driving air source for the discharge valve 33; when at least one of the main control valve 121 and the gas phase control valve 124 is shut off, the gas phase valve 34 is shut off due to the lack of driving air source for the gas phase valve 34.

[0059] In this embodiment, two groups of control valve assemblies 12 may be provided downstream of the first control valve 11, and both groups of control valve assemblies 12 are connected to the emergency cut-off control valve group 3, that is, the charging control valve 122, the discharge control valve 123 and the gas phase control valve 124 in the two groups of control valve assemblies 12 are respectively connected to the charging valve 32, the discharge valve 33 and the gas phase valve 34, so that both groups of control valve assemblies 12 can control the conduction or shutoff of the emergency cut-off control valve group 3. Specifically, in the two groups of control valve assemblies 12, the two charging control valves 122 are connected to the same charging valve 32 through a shuttle valve, the two discharge control valves 123 are connected to the same discharge valve 33 through a shuttle valve, and the two gas phase control valves 124 are connected to the same gas phase valve 34 through a shuttle valve.

[0060] Specifically, two sets of control valve assemblies 12 are respectively arranged on the main driving side 41 and the co-driving side 42 of the tank truck, so that when the loading and unloading objects are located on different sides of the vehicle body, the operator can operate the control valve assembly 12 on the corresponding vehicle body side, thereby facilitating loading and unloading control, realizing operation on both sides, and improving work efficiency.

[0061] See also Figure 1 and Figure 3 The connecting pipeline 1 may also be provided with an air storage cylinder 13 and an air source valve 14.

[0062] The air cylinder 13 can be used to store the driving air source as a power source for connecting the pipeline 1. The air cylinder 13 is connected to the first control valve 11 through the air source valve 14, so that the air source valve 14 can shut off or conduct the pipeline between the air cylinder 13 and the first control valve 11. In addition, when the air source valve 14 is shut off, the driving air source in the air cylinder 13 can be prevented from leaking out.

[0063] In this embodiment, the air source valve 14 can be configured as a solenoid valve, or as a pneumatic valve or a manual valve.

[0064] It should be noted that the air cylinder 13 can be connected to the driving air circuit on the vehicle body 4, so that the driving air source is transferred from the driving air circuit to the air cylinder 13 and remains in the air cylinder 13. Of course, in some other embodiments, the air cylinder 13 can also be configured as a storage tank with a driving air source to provide a driving air source for the connecting pipeline 1.

[0065] See also Figure 1 and Figure 3 The connecting pipeline 1 may also be provided with a one-way valve 15. The inlet end of the one-way valve 15 is connected to the driving gas circuit, and the outlet end of the one-way valve 15 is connected to the air storage cylinder 13, so that the driving gas source flows from the driving gas circuit to the air storage cylinder 13 in one direction, and when the gas source valve 14 is closed, the driving gas source in the air storage cylinder 13 is prevented from flowing back into the driving gas circuit.

[0066] In this embodiment, after the driving gas source in the driving gas circuit on the vehicle body 4 flows into the gas cylinder 13 through the one-way valve 15, it can be retained in the gas cylinder 13 to serve as a power source for connecting the pipeline 1 to drive the emergency cut-off control valve group 3 to be turned on. At the same time, when the driving gas circuit of the vehicle body 4 is cut off, there is a sufficient amount of driving gas source and gas pressure in the gas cylinder 13 to drive the emergency cut-off control valve group 3 to be turned on, ensuring the smooth filling or discharge of the tank body 2.

[0067] See also Figure 1 and Figure 3 The connecting pipeline 1 may also be provided with a filter 16 and a pressure regulator 17. The filter 16 and the pressure regulator 17 are connected in sequence and connected upstream of the first control valve 11. Specifically, the filter 16 and the pressure regulator 17 are connected between the gas source valve 14 and the first control valve 11.

[0068] In this embodiment, the filter 16 can be used to filter the driving gas source to remove impurities in the driving gas source, ensure the cleanliness of the gas in the downstream connecting pipeline 1, and increase the service life of the downstream valves and other components. The pressure regulator 17 can be used to adjust the output gas pressure of the connecting pipeline 1 so that the output gas pressure of the connecting pipeline 1 remains stable.

[0069] See also Figure 1 , Figure 2 and Figure 3 The filling control system may further include a second control valve 18. The second control valve 18 is connected between the first control valve 11 and the control valve assembly 12, and is communicatively connected to the control console, so that the control console can remotely control the conduction or shutoff of the second control valve 18, and when the second control valve 18 is shut off, the connecting pipeline 1 is shut off, thereby shutting off the emergency cut-off control valve group 3.

[0070] In this embodiment, the second control valve 18 can be set as a solenoid valve, and the second control valve 18 can be connected to the control console for communication, so that after the second control valve 18 receives the shutdown signal, the second control valve 18 is automatically shut down, thereby realizing the function of remotely closing the emergency cut-off control valve group 3, so that in an emergency and when it is impossible to approach the tank body 2 or the vehicle body 4, the second control valve 18 can be remotely controlled to shut down, thereby shutting down the emergency cut-off control valve group 3.

[0071] Figure 4 yes Figure 1 Schematic diagram of the filling valve of the emergency shut-off control valve group of the tank truck.

[0072] See also Figure 4 The tanker can also include a driving cylinder 30. The driving cylinder 30 is connected to the output end of the connecting pipeline 1 so that the driving cylinder 30 can be extended and retracted under the drive of the driving gas source.

[0073] In this embodiment, the driving cylinder 30 is installed on the emergency cut-off control valve group 3, and the output end of the driving cylinder 30 is connected to the push rod 301 of the emergency cut-off control valve group 3, so that the driving cylinder 30 can drive the push rod 301 to rotate and close the emergency cut-off control valve group 3.

[0074] It should be noted that the driving cylinder 30 is installed one by one on the filling valve 32, the discharge valve 33 and the gas phase valve 34, so that the driving cylinder 30 can drive the push rod 301 of the filling valve 32, the discharge valve 33 and the gas phase valve 34, and then control the closing of the filling valve 32, the discharge valve 33 and the gas phase valve 34.

[0075] See also Figure 4The filling valve 32, the discharge valve 33 and the gas phase valve 34 can be set as valves of the same structure. At the same time, the filling valve 32, the discharge valve 33 and the gas phase valve 34 are all provided with a return spring 302, and the return spring 302 can drive the push rod 301 to rotate, so that the filling valve 32, the discharge valve 33 and the gas phase valve 34 remain in a closed state.

[0076] It should be noted that since the filling valve 32, the discharge valve 33 and the gas phase valve 34 are kept closed under the drive of the return spring 302, when the driving air source in the connecting pipeline 1 drives the driving cylinder 30 to extend, it can offset the elastic force of the return spring 302 and drive the push rod 301 to rotate, so that the filling valve 32, the discharge valve 33 or the gas phase valve 34 are turned on, thereby allowing the tank body 2 to be filled or discharged.

[0077] In addition, in this embodiment, under normal conditions, the first control valve 11, the air source valve 14, and the second control valve 18 are all kept in a conducting state, so that the connecting pipeline 1 is conducted. At the same time, when the first control valve 11 or the second control valve 18 is turned off, the connecting pipeline 1 can be cut off, so that the driving cylinder 30 loses the driving air source, and then the reset spring 302 drives the emergency cut-off control valve group 3 to be turned off, thereby ensuring the installation of the tank body 2.

[0078] In summary, after the operator controls the control valve assembly 12 to be turned on, the driving gas source in the connecting pipeline 1 can drive the driving cylinder 30 to extend, thereby driving the emergency cut-off control valve group 3 to be turned on, so that the tank body 2 can be filled or discharged. When the controller controls the first control valve 11 to be turned off according to the safety signal or remotely controls the second control valve 18 to be turned off, the connecting pipeline 1 is turned off, thereby causing the driving cylinder 30 to shrink, and the emergency cut-off control valve group 3 is driven by the reset spring 302 to return to the closed state, realizing the timeliness and safety of the control of the emergency cut-off control valve group 3, thereby ensuring the safety of the tank body 2.

[0079] The present application also discloses a tank truck filling control method, wherein the tank truck filling control method is applicable to the above-mentioned tank truck filling control system.

[0080] Specifically, the control method includes:

[0081] S1. Provide a driving gas source to the emergency cut-off control valve group 3 through the connecting pipeline 1 to conduct the emergency cut-off control valve group 3. Specifically, open the main control valve 121 in the control valve assembly 12, and at least one of the charging control valve 122, the discharge control valve 123 or the gas phase control valve 124, so that the connecting pipeline 1 can be connected to the emergency cut-off control valve group 3, so that the emergency cut-off control valve group 3 can be conducted.

[0082] S2. The detection equipment detects the safety signal on the tank truck, which includes at least one of the speed of the tank truck and the gas concentration around the tank body 2, so that when an emergency occurs between the tank body 2 and the vehicle body 4, the signal can be fed back to the controller in time.

[0083] S3. The controller receives the safety signal detected by the detection device, and controls the first control valve 11 to close according to the safety signal, and then closes the emergency cut-off control valve group 3, thereby ensuring the safety of filling or discharging the tank body 2.

[0084] Therefore, the control method can control the filling or discharging of the tank truck and ensure the safety during the filling or discharging process.

[0085] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A filling control system for a tank truck, characterized in that: include: A connecting pipeline, one end of which is used to connect to the driving gas source, and the other end is used to connect to the emergency cut-off control valve group of the tank; A first control valve, arranged on the connecting pipeline; A detection device installed on the tank truck for detecting a safety signal on the tank truck; the safety signal includes at least one of the speed of the tank truck and the gas concentration around the tank body; A controller is electrically connected to the detection device and is used to receive the safety signal detected by the detection device. The controller is electrically connected to the first control valve and is used to control the first control valve to shut down according to the safety signal so as to shut down the emergency cut-off control valve group.

2. The filling control system of a tank truck according to claim 1, characterized in that: A control valve assembly is arranged downstream of the first control valve; the control valve assembly includes a main control valve, a charging control valve, a discharge control valve and a gas phase control valve, the main control valve is connected to the first control valve, and the charging control valve, the discharge control valve and the gas phase control valve are respectively connected to the main control valve; the charging control valve is connected to the charging valve of the emergency cut-off control valve group, the discharge control valve is connected to the discharge valve of the emergency cut-off control valve group, and the gas phase control valve is connected to the gas phase valve of the emergency cut-off control valve group.

3. The filling control system of a tank truck according to claim 2, characterized in that: Two groups of control valve assemblies are arranged downstream of the first control valve, and the two groups of control valve assemblies are respectively arranged on the main driving side and the co-driving side of the tank truck, and the two groups of control valve assemblies are both connected to the emergency cut-off control valve group.

4. The filling control system of a tank truck according to claim 1, characterized in that: The connecting pipeline is also provided with an air cylinder and an air source valve; the air cylinder is used to store the driving air source; the air cylinder is connected to the first control valve through the air source valve, so that the air source valve can cut off or open the pipeline between the air cylinder and the first control valve.

5. The filling control system of a tank truck according to claim 4, characterized in that: The connecting pipeline is also provided with a one-way valve; the inlet end of the one-way valve is connected to the driving air circuit, and the outlet end of the one-way valve is connected to the air storage cylinder, so that the driving air source flows from the driving air circuit to the air storage cylinder in a one-way manner.

6. The filling control system of a tank truck according to claim 1, characterized in that: The connecting pipeline is further provided with a filter; the filter is connected to the upstream of the first control valve to filter the driving gas source.

7. The filling control system of a tank truck according to claim 1, characterized in that: The connecting pipeline is also provided with a pressure regulator; the pressure regulator is connected to the upstream of the first control valve to adjust the output gas pressure of the connecting pipeline.

8. The filling control system of a tank truck according to claim 1, characterized in that: It also includes a second control valve; the second control valve is connected between the first control valve and the control valve assembly, and is communicatively connected to the console so that the console can remotely control the opening or closing of the second control valve, and when the second control valve is closed, the emergency cut-off control valve group is closed.

9. A tank truck, characterized in that: The tank truck comprises a tank body, a vehicle body, and the filling control system of the tank truck as described in any one of claims 1 to 8; the tank body is installed on the vehicle body for storing a medium; the tank body is connected to the emergency cut-off control valve group for loading or discharging a medium; the filling control system of the tank truck is installed on the vehicle body and is connected to the emergency cut-off control valve group to control the conduction or shutoff of the emergency cut-off control valve group.

10. The tank car according to claim 9, characterized in that It also includes a driving cylinder; the driving cylinder is connected to the output end of the connecting pipeline so that the driving cylinder can be extended and retracted under the drive of the driving air source; the driving cylinder is installed on the emergency cut-off control valve group, and the output end of the driving cylinder is connected to the push rod of the emergency cut-off control valve group so that the driving cylinder can drive the push rod to rotate and shut off the emergency cut-off control valve group.

11. A tank truck filling control method, characterized in that: The tank truck filling control method is applicable to the tank truck filling control system according to any one of claims 1 to 8; the control method comprises: Providing a driving gas source to the emergency cut-off control valve group through the connecting pipeline; The detection device detects a safety signal on the tank truck; the safety signal includes at least one of the speed of the tank truck and the gas concentration around the tank body; The controller receives the safety signal detected by the detection device, and controls the first control valve to close according to the safety signal, thereby closing the emergency cut-off control valve group.

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