Transportation equipment for loading and unloading liquid dangerous goods

Abstract

The invention relates to cargo transportation equipment, in particular to transportation equipment for loading and unloading liquid dangerous cargos, and aims to solve the technical problems that most valves used by existing common tank containers are manually opened and closed and need to be manually operated during use, the operation risk is high, and the efficiency is poor. The oil gas recovery device comprises a gas phase pipeline, an oil gas recovery connector, an oil gas recovery connector interlocking valve, an oil gas recovery valve, a sideboard vent valve, a main control gas source connector and a main control switch, the oil gas recovery valve is connected with the oil gas recovery connector through the gas phase pipeline, one end of the sideboard vent valve is communicated with the atmosphere, and the other end of the sideboard vent valve is connected with the gas phase pipeline through a first tee joint; the oil and gas recovery joint interlocking valve is mounted on the oil and gas recovery joint and is in a normally-closed state; a main control switch air inlet is connected with the main control air source connector, an air outlet is connected with the air inlet end of the oil-gas recovery connector interlocking valve and the oil-gas recovery valve, and the air outlet end of the oil-gas recovery connector interlocking valve is connected with the side plate vent valve.

Description

Technical Field

[0001] This invention relates to a cargo transportation equipment, specifically a transportation equipment for loading and unloading liquid hazardous goods. Background Technology

[0002] Currently, most liquid dangerous goods are not permitted to be transported by rail. Traditional transportation methods mainly include bulk cargo shipping, railway tank cars, and road tank cars / tank cars. However, these methods are gradually revealing their limitations when facing the high demands of modern logistics for efficiency, safety, and flexibility. Railway tank cars are constrained by railway line layout and scheduling, making door-to-door transportation services impossible; while road tank cars offer high flexibility, they suffer from low per-vehicle capacity and high costs for long-distance transport. Tank containers are an internationally standardized multimodal transport container that can be separated from the means of transport, easily transferring between ships, trains, and trucks. This avoids the risks and costs of transshipment in traditional methods, solving the core problems of inflexible rail transport and high road transport costs.

[0003] Although tank containers offer new solutions for transporting liquid dangerous goods, most valves in existing ordinary tank containers are manually operated, requiring manual operation, which is not only risky but also inefficient. In addition, after filling with liquid, liquid may remain in the liquid phase pipeline of top-loading and top-unloading tank containers, resulting in mixed cargo. Furthermore, top-loading and top-unloading tank containers have a siphon effect during transportation, which affects transportation safety. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of the fact that most valves used in existing ordinary tank containers are manually operated, which requires manual operation, resulting in high operational risks and poor efficiency. In addition, after filling with liquid, liquid is easily left in the liquid phase pipeline of the top-loading and top-unloading tank container, and the top-loading and top-unloading tank container has a siphon effect during transportation, which affects transportation safety. Therefore, this invention provides a transportation equipment for loading and unloading dangerous liquid goods.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A transport equipment for loading and unloading liquid dangerous goods includes a frame assembly, a tank housed within the frame assembly, and a liquid phase pipeline assembly and a gas phase pipeline assembly mounted on the tank; its special feature is that: The vapor phase piping assembly includes a vapor phase piping, an oil-gas recovery connector, an oil-gas recovery connector interlock valve, and an oil-gas recovery valve and a side plate vent valve, all of which are pneumatic valves. The oil and gas recovery valve is located at the top of the tank, and its oil and gas inlet end is connected to the inside of the tank, while its oil and gas outlet end is connected to the oil and gas recovery connector through a gas phase pipeline. One end of the side plate vent valve is connected to the atmosphere; the other end of the side plate vent valve is connected to the gas phase pipeline through the first tee, and the connection position is close to the oil and gas recovery valve; or, the other end of the side plate vent valve passes through the top of the tank and is connected to the inside of the tank. The interlock valve of the oil and gas recovery connector is installed on the oil and gas recovery connector and is normally closed. It also includes a control panel; the control panel includes a main control air source interface and a main control switch; the main control air source interface is used to connect to an external air source; the air inlet of the main control switch is connected to the main control air source interface through an air pipe, and the air outlet is connected to the air inlet of the oil and gas recovery connector interlock valve and the control IN terminal of the oil and gas recovery valve through an air pipe respectively; the air outlet of the oil and gas recovery connector interlock valve is connected to the control IN terminal of the side plate vent valve through an air pipe; the side plate vent valve is normally open when its control IN terminal is not receiving air.

[0006] Furthermore, the liquid phase piping assembly includes a siphon, a loading / unloading valve, a liquid phase piping, and a loading / unloading connector; The loading and unloading valve is located at the top of the tank and is a pneumatic valve; the siphon pipe is located inside the tank and its upper end is connected to one end of the loading and unloading valve; the upper end of the liquid phase pipeline is connected to the other end of the loading and unloading valve, and the lower end of the liquid phase pipeline is connected to the loading and unloading joint. The control panel also includes a compartment switch. The air inlet of the compartment switch is connected to the control OUT terminal of the oil and gas recovery valve through an air pipe, and the air outlet of the compartment switch is connected to the air inlet of the loading and unloading valve through an air pipe, which is used to control the opening or closing of the loading and unloading valve.

[0007] Furthermore, the liquid phase pipeline assembly also includes a bottom valve, which is connected between the lower end of the liquid phase pipeline and the loading / unloading joint, for manual or pneumatic control of the connection and disconnection between the loading / unloading joint and the liquid phase pipeline.

[0008] Furthermore, it also includes a pressure equalization structure; the pressure equalization structure includes a pressure equalization pneumatic valve, one end of which is connected to the upper end of the siphon tube, and the other end is connected to the inside of the tank, used to balance the gas pressure in the gas phase space inside the siphon tube and the gas phase space inside the tank; the pressure equalization pneumatic valve is a pneumatic valve, and the air inlet of the pressure equalization pneumatic valve is connected to the air outlet of the compartment switch through an air pipe. The pressure equalization pneumatic valve is normally open when its air inlet is not receiving air.

[0009] Furthermore, the pressure equalization structure also includes a pressure equalization valve air pipe and a siphon pipe orifice valve seat; A through hole is provided near the upper end of the siphon tube. The siphon tube opening valve seat is fixedly connected to the through hole. One end of the pressure equalizing valve air pipe is connected to the siphon tube opening valve seat, and the other end is connected to one end of the pressure equalizing pneumatic valve. The pressure equalizing pneumatic valve is fixedly connected to the top of the tank.

[0010] Furthermore, it also includes a residual liquid drainage structure; the residual liquid drainage structure includes a drain pipe, a gas source pipe, and an air inlet pipe; One end of the drain pipe is connected to the top of the tank through the drain pipe flange, and the other end is connected to the lower end of the liquid phase pipeline; a first check valve is installed on the drain pipe, and the first check valve is located close to the drain pipe flange; the diameter of the drain pipe is smaller than the diameter of the liquid phase pipeline. The control panel also includes a gas source interface for the residual liquid drain line. One end of the gas source interface is used to connect to an external gas source, and the other end is connected to the upper end of the liquid phase line in sequence through the gas source line and the air inlet line. A second check valve is installed on the air inlet line.

[0011] Furthermore, the loading and unloading joint is located on the lower part of the outer side of the tank; the loading and unloading valve is a bottom valve; and the bottom valve is an API valve.

[0012] Furthermore, the control panel also includes a side panel vent valve indicator light, a main control indicator light, and a pressure gauge; the side panel vent valve indicator light is connected to the control OUT terminal of the side panel vent valve via an air pipe, the main control indicator light is connected to the air outlet of the main control switch via an air pipe, and the pressure gauge is connected in series between the main control air source interface and the main control switch.

[0013] Furthermore, the vapor phase pipeline assembly also includes a vapor phase hose, which connects the vapor recovery valve to the vapor phase pipeline; the vapor recovery connector is located on the lower side of the tank body.

[0014] Furthermore, it also includes an anti-static overflow probe, which is installed on the top of the tank; the control panel also includes an overflow protection plug, and the anti-overflow probe is connected to the overflow protection plug via a wire, which is used to connect to the overflow protection interface of the ground facility.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The transportation equipment for loading and unloading liquid dangerous goods of the present invention, by setting a side plate vent valve and an oil and gas recovery connector interlock valve, both of which are pneumatic valves, connects the outlet of the main control switch to the inlet of the oil and gas recovery connector interlock valve and the control IN terminal of the oil and gas recovery valve respectively. The oil and gas recovery connector interlock valve is pneumatically interlocked with the side plate vent valve. When oil and gas recovery is not required, the side plate vent valve is opened, and the gas in the tank can be discharged through the side plate vent valve. When oil and gas recovery is required, the ground oil and gas recovery facility is connected to the oil and gas recovery connector, which will trigger the switch of the oil and gas recovery connector interlock valve to open it. Then, when the main control switch is opened, the oil and gas recovery valve is opened, and at the same time, the gas reaches the side plate vent valve through the oil and gas recovery connector interlock valve, which will cause the side plate vent valve to close automatically. This realizes the automated operation of the oil and gas recovery process, significantly reduces the degree of manual intervention and operational risks, and improves the efficiency of operation. 2. The transport equipment for loading and unloading liquid dangerous goods of the present invention, by setting the loading and unloading valve as a pneumatic valve, and setting the air inlet of the compartment switch to be connected to the control OUT terminal of the oil and gas recovery valve through an air pipe, and the air outlet of the compartment switch to be connected to the air inlet of the loading and unloading valve through an air pipe, forms a pneumatic interlock between the compartment switch and the main control switch, which can reduce safety accidents caused by human error and significantly improve the safety and automation of the loading and unloading process; 3. The transportation equipment for loading and unloading liquid dangerous goods of the present invention solves the siphon effect problem in the transportation process of the top loading and unloading siphon structure by setting up a flat pressure structure, thus ensuring the safety and stability of the transportation process. In addition, by setting the air inlet of the flat pressure pneumatic valve and the air inlet of the loading and unloading valve to be connected to the air outlet of the compartment switch, a pneumatic interlock control is formed between the flat pressure pneumatic valve and the unloading valve. This not only reduces safety accidents caused by human error and improves the safety of the loading and unloading process, but also improves the efficiency of operation. 4. The transport equipment for loading and unloading liquid dangerous goods of the present invention, by setting a residual liquid discharge structure, can ensure that the liquid in the liquid phase pipeline can be completely drained and returned after the unloading operation is completed, effectively solving the problem of residual liquid in the liquid phase pipeline after the loading operation, avoiding the mixing of different batches of goods, ensuring the purity of transported goods, and also reducing the cost and environmental burden of cleaning residues. 5. The transport equipment for loading and unloading liquid dangerous goods of the present invention, by setting an anti-overflow probe with anti-static function, can prevent overflow accidents caused by overloading and installation accidents caused by electrostatic discharge, thereby enhancing safety and reducing potential threats to the environment and personnel. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention; Figure 2 This is a schematic diagram of the rear structure of a transportation equipment for loading and unloading liquid dangerous goods according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the top structure of a transport equipment embodiment for loading and unloading liquid dangerous goods of the present invention without showing the walkway; Figure 4 This is a schematic diagram of the liquid phase pipeline assembly in an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention; Figure 5 This is a schematic diagram of the flat pressure structure in an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention; Figure 6 This is a schematic diagram of the structure of the gas phase pipeline assembly in an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention; Figure 7This is a pneumatic control flowchart of an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention; Figure 8 This is a schematic diagram of the residual liquid discharge structure in an embodiment of a transport equipment for loading and unloading liquid dangerous goods according to the present invention.

[0017] The attached figures are labeled as follows: 1-Tank body, 2-Frame assembly, 3-Liquid phase pipeline assembly, 31-Siphon pipe, 32-Loading / unloading valve, 33-Liquid phase pipeline, 34-Liquid phase pipeline clamp, 35-Loading / unloading connector, 36-Bottom valve, 4-Pressure equalization structure, 41-Pressure equalization pneumatic valve, 42-Pressure equalization valve air pipe, 43-Siphon pipe orifice valve seat, 5-Gas phase pipeline assembly, 51-Oil / gas recovery valve, 52-Gas phase pipeline, 53-Oil / gas recovery connector, 54-Side plate vent valve, 55-Oil / gas recovery connector interlock valve, 56-First tee, 57-Gas phase pipeline clamp, 58-Gas phase pipeline flexible connector Pipe, 6-Control panel, 61-Side panel vent valve indicator light, 62-Overflow protection plug, 63-Pressure gauge, 64-Main control switch, 65-Compartment switch, 66-Main control indicator light, 67-Main control air source interface, 68-Residual liquid drain line air source interface, 7-Residual liquid drain structure, 71-Drain pipe flange, 72-Drain pipe, 73-First check valve, 74-Drain pipe clamp, 75-Air source line, 76-Second check valve, 77-Air inlet pipe, 78-Adapter, 8-Overflow prevention probe, 9-Manhole, 10-Safety valve, 11-External air source. Detailed Implementation

[0018] To make the objectives, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides a transport equipment for loading and unloading liquid dangerous goods, comprising a tank body 1, a frame assembly 2, a liquid phase pipeline assembly 3, a pressure equalization structure 4, a gas phase pipeline assembly 5, a control panel 6, and a residual liquid discharge structure 7.

[0021] The tank body 1 is fixedly mounted inside the frame assembly 2 by a pair of skirt supports. The top of the tank body 1 is equipped with a loading and unloading valve 32, an oil and gas recovery valve 51, an overflow prevention probe 8, a manhole 9, and a pair of safety valves 10, and is protected by a protective box. A walkway is provided on the top of the frame assembly 2.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the vapor phase pipeline assembly 5 includes a vapor phase pipeline 52, an oil-gas recovery connector 53, an oil-gas recovery connector interlock valve 55, a first tee 56, a vapor phase hose 58, and an oil-gas recovery valve 51 and a side plate vent valve 54, all of which are pneumatically operated. The oil-gas recovery valve 51 is welded to the top of the tank body 1 via a valve seat, and its oil-gas inlet end is connected to the interior of the tank body 1. Its oil-gas outlet end is connected to the upper end of the vapor phase pipeline 52 via the vapor phase hose 58. The oil-gas recovery valve 51 is normally closed when no gas is introduced at its control IN end, and opens after gas is introduced. The oil-gas recovery valve 51 is pneumatically controlled for opening and closing, and has the functions of oil-gas recovery, pressure regulation, and preventing foreign matter from entering the pipeline. The lower end of the vapor phase pipeline 52 is connected to the oil-gas recovery connector 53, which is located below the rear end of the tank body 1. One end of the side plate vent valve 54 is connected to the atmosphere, and the other end of the side plate vent valve 54 is connected to the gas phase pipeline 52 through the first tee 56, and the connection position is close to the oil and gas recovery valve 51. The side plate vent valve 54 is normally open when no air enters at its control IN end, and closes after air enters. The side plate vent valve 54 has the functions of adjusting air pressure balance and preventing dust and debris from entering. The oil and gas recovery connector interlock valve 55 is installed on the oil and gas recovery connector 53 and is normally closed. At this time, the inlet and outlet of the interlock valve 55 are not connected, but the inlet is connected to the exhaust port. Gas entering the inlet of the interlock valve 55 is discharged from the exhaust port. When the switch on the interlock valve 55 is activated, the interlock valve 55 is open. At this time, the inlet and outlet of the interlock valve 55 are connected, but the inlet is not connected to the exhaust port. Gas entering the inlet of the interlock valve 55 flows out from the outlet. In this embodiment, the gas phase pipeline 52 is fixed to the outside of the tank 1 by multiple spaced gas phase pipeline clamps 57. In other embodiments, the gas phase pipeline 52 can also be arranged inside the tank 1. In other embodiments, the side plate vent valve 54 can also be fixed to the top of the tank body 1, with one end of the side plate vent valve 54 communicating with the atmosphere and the other end of the side plate vent valve 54 communicating with the interior of the tank body 1.

[0023] like Figure 2 As shown, the control panel 6 is located below the rear end of tank 1. This design eliminates the need for operators to climb to heights, thus improving the safety of loading and unloading operations. Figure 6 and Figure 7As shown, the control panel 6 includes a main control air source interface 67 and a main control switch 64. The main control air source interface 67 is used to connect to an external air source 11. The air inlet of the main control switch 64 is connected to the main control air source interface 67 via an air pipe. The air outlet of the main control switch 64 is connected to the air inlet of the oil and gas recovery connector interlock valve 55 and the control IN terminal of the oil and gas recovery valve 51 via air pipes. The air outlet of the oil and gas recovery connector interlock valve 55 is connected to the control IN terminal of the side plate vent valve 54 via an air pipe. This configuration forms a pneumatic interlock between the oil and gas recovery connector interlock valve 55 and the side plate vent valve 54, which can significantly improve the safety and automation of the loading and unloading process and reduce safety accidents caused by human error.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment adopts a top-loading and top-unloading method. The liquid phase pipeline assembly 3 includes a siphon pipe 31, a loading / unloading valve 32, a liquid phase pipeline 33, a loading / unloading connector 35, a bottom valve 36, and multiple liquid phase pipeline clamps 34. The siphon pipe 31 is located inside the tank body 1. One end of the loading / unloading valve 32 is welded to the top of the tank body 1 via a valve seat and is connected to the upper end of the siphon pipe 31 by welding. The other end of the loading / unloading valve 32 is connected to the upper end of the liquid phase pipeline 33 by welding. The loading / unloading valve 32 is a pneumatic valve. The loading / unloading valve 32 is normally closed when no air is entering its air inlet and opens after air is introduced. The lower end of the liquid phase pipeline 33 is connected to one end of the bottom valve 36, and the other end of the bottom valve 36 is connected to the loading / unloading connector 35, which is located below the rear end of the tank body 1. The bottom valve 36 is a manual valve used to manually control the connection and disconnection between the loading / unloading joint 35 and the liquid phase pipeline 33. By setting the bottom valve 36, leakage-free bottom loading and unloading can be achieved. In this embodiment, the loading / unloading valve 32 is a bottom valve, the bottom valve 36 is an API valve, and the liquid phase pipeline 33 is fixed to the outside of the tank body 1 by multiple spaced liquid phase pipeline clamps 34 to prevent the liquid phase pipeline 33 from falling off due to vibration during transportation. In other embodiments, the liquid phase pipeline 33 can also be arranged inside the tank body 1. In other embodiments, the bottom valve 36 can also be a pneumatic valve.

[0025] like Figure 4 and Figure 7 As shown, the control panel 6 also includes a compartment switch 65. The air inlet of the compartment switch 65 is connected to the control OUT terminal of the oil and gas recovery valve 51 via an air pipe, and the air outlet of the compartment switch 65 is connected to the air inlet of the loading and unloading valve 32 via an air pipe, used to control the opening or closing of the loading and unloading valve 32. The compartment switch 65 can only be opened after the main control switch 64 is opened, so that the loading and unloading valve 32 can be opened. This setting can reduce safety accidents caused by human error and improve the safety of the loading and unloading process.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the pressure equalization structure 4 includes a pressure equalization pneumatic valve 41, a pressure equalization valve air pipe 42, and a siphon tube orifice valve seat 43. A through hole is provided near the upper end of the siphon tube 31, and the siphon tube orifice valve seat 43 is fixedly connected to this through hole by welding. One end of the pressure equalization valve air pipe 42 is connected to the siphon tube orifice valve seat 43, and the other end of the pressure equalization valve air pipe 42 is connected to one end of the pressure equalization pneumatic valve 41. The pressure equalization pneumatic valve 41 is welded to the top of the tank body 1 via a valve seat, and the other end of the pressure equalization pneumatic valve 41 communicates with the interior of the tank body 1. The pressure equalization pneumatic valve 41 is a pneumatic valve. The air inlet of the pressure equalization pneumatic valve 41 is connected to the middle of the air pipe between the compartment switch 65 and the loading / unloading valve 32 via a second three-way valve. The pressure equalization pneumatic valve 41 is normally open when no air is entering its air inlet and closes after air is introduced.

[0027] When tank 1 is full of liquid for transportation or storage, loading / unloading valve 32 is closed and equalizing pneumatic valve 41 is opened. At this time, the gas phase space inside tank 1 is connected to the gas phase space inside siphon pipe 31, and the pressures are equal. When tank 1 is unloading, loading / unloading valve 32 is opened and equalizing pneumatic valve 41 is closed. Liquid is drawn to the outside through siphon pipe 31. Closing equalizing pneumatic valve 41 at this time prevents liquid from flowing back into tank 1. By setting up equalizing structure 4, the siphon effect problem in the transportation process of top-loading and unloading structures can be solved, eliminating the unexpected siphon effect caused by shaking and pressure changes during road or rail transportation. This prevents abnormal changes in the cargo structure inside tank 1 and internal pressure imbalance, further improving the dynamic stability and safety of long-distance transportation. In addition, equalizing pneumatic valve 41 and loading / unloading valve 32 are pneumatically interlocked. This setting can not only reduce safety accidents caused by human error and improve the safety of loading and unloading processes, but also improve operational efficiency.

[0028] like Figure 7 As shown, the control panel 6 also includes a side panel vent valve indicator light 61, a main control indicator light 66, and a pressure gauge 63. The side panel vent valve indicator light 61 is connected to the control OUT terminal of the side panel vent valve 54 via an air pipe, allowing observation of the opening and closing status of the side panel vent valve 54. The main control indicator light 66 is connected to the air outlet of the main control switch 64 via an air pipe, allowing observation of whether the main control switch 64 is open. The pressure gauge 63 is connected in series between the main control air source interface 67 and the main control switch 64, allowing a direct view of the pressure of the external air source 11.

[0029] like Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the residual liquid discharge structure 7 includes a drain pipe flange 71, a drain pipe 72, a gas source pipe 75, and an air inlet pipe 77. The drain pipe flange 71 is welded to the top of the tank body 1, and one end of it communicates with the interior of the tank body 1. The drain pipe 72 is arranged along the liquid phase pipe 33 and is fixed to the liquid phase pipe 33 by multiple spaced drain pipe clamps 74. One end of the drain pipe 72 is connected to the other end of the drain pipe flange 71, and the other end of the drain pipe 72 is connected to the lower part of the liquid phase pipe 33 near the bottom valve 36. In order to discharge as much liquid as possible from the liquid phase pipe 33, the diameter of the drain pipe 72 is set smaller than the diameter of the liquid phase pipe 33. In order to prevent liquid backflow, a first check valve 73 is provided on the drain pipe 72, and the first check valve 73 is located near the drain pipe flange 71.

[0030] The control panel 6 also includes a residual liquid drain line gas source interface 68. One end of the residual liquid drain line gas source interface 68 is used to connect to an external gas source 11, and the other end of the residual liquid drain line gas source interface 68 is connected to the lower end of the gas source line 75. The upper end of the gas source line 75 is connected to one end of the air inlet pipe 77 via an adapter 78. The air inlet pipe 77 is arranged horizontally, and the other end of the air inlet pipe 77 is connected to the liquid phase line 33 near the loading and unloading valve 32. To prevent liquid from entering the gas source line 75, a second check valve 76 is installed on the air inlet pipe 77. Gas is introduced into the liquid phase line 33 through the gas source line 75. The gas will push the liquid in the liquid phase line 33 to flow towards the drain pipe 72, and finally allow the liquid to flow back into the tank 1 through the drain pipe 72. By setting up the residual liquid drainage structure 7, the problem of residual liquid in the liquid phase pipeline 33 after the loading operation is effectively solved, avoiding the mixing of different batches of goods, ensuring the purity of transported goods, and also reducing the cost and environmental burden of cleaning up residues.

[0031] like Figure 1 and Figure 3 As shown, this embodiment employs an anti-static overflow probe 8, which is welded and fixed to the top of the tank 1 via a valve seat. The control panel 6 also includes an overflow protection plug 62, to which the anti-overflow probe 8 is connected via a wire. The overflow protection plug 62 is used to connect to the overflow protection interface of ground facilities. During the process of filling liquid cargo into the tank 1, the anti-overflow probe 8 can monitor the liquid level and filling status in the tank 1 in real time and accurately. When the liquid level rises to a preset safe height, the anti-overflow probe 8 will trigger a signal to notify the operator to stop filling and prevent liquid overflow. In addition, when the anti-overflow probe 8 detects static electricity, it will trigger a signal to notify the operator to stop filling, thus improving safety. The anti-static overflow probe 8 can be a known structure with anti-static functionality.

[0032] If oil and gas recovery is not required at the loading and unloading site during filling operations, connect the loading and unloading pipeline of the ground facility to the loading and unloading connector 35, connect the external gas source 11 to the main control gas source interface 67, connect the overflow protection interface of the ground facility to the overflow protection plug 62, and then open the main control switch 64. One path of gas is discharged through the exhaust port of the oil and gas recovery connector interlock valve 55, and another path of gas enters the oil and gas recovery valve 51, causing the oil and gas recovery valve 51 to open. Then, the gas path reaches the compartment switch 65 through the oil and gas recovery valve 51. After opening the compartment switch 65, the gas path reaches the loading and unloading valve 32 and the flat pressure pneumatic valve 41 through the second three-way valve, causing the loading and unloading valve 32 to open and the flat pressure pneumatic valve 41 to close. Then, open the bottom valve 36, and the liquid is filled into the tank 1 through the liquid phase pipeline 33. During this process, although the oil and gas recovery valve 51 is open, because the oil and gas recovery connector 53 is not connected to the outside, the gas in the tank 1 will be discharged into the atmosphere through the side plate vent valve 54. During the filling process, the anti-overflow probe 8 automatically monitors whether the liquid in the tank 1 has risen to the preset safe height. When the liquid level rises to the preset safe height, the anti-overflow probe 8 automatically alarms and notifies the operator to stop filling. Then, the bottom valve 36 is closed first, followed by the compartment switch 65, which closes the loading and unloading valve 32 and opens the pressure-balancing pneumatic valve 41. After that, the main control switch 64 is closed, which closes the oil and gas recovery valve 51. Then, the external air source 11 is disconnected from the main control air source interface 67 and connected to the residual liquid draining pipeline air source interface 68. The gas enters the liquid phase pipeline 33 through the air source pipeline 75 and the air inlet pipe 77, blowing the residual liquid in the liquid phase pipeline 33 back into the tank 1. Finally, the external air source 11 is disconnected from the residual liquid draining pipeline air source interface 68, the connection between the loading and unloading pipeline of the ground facility and the loading and unloading connector 35 is disconnected, and the connection between the overflow protection interface of the ground facility and the overflow protection plug 62 is disconnected.

[0033] During unloading operations, if the loading / unloading station does not require the filling of tank 1 with pressure-balancing gas, connect the loading / unloading pipeline of the ground facility to the loading / unloading connector 35, connect the external gas source 11 to the main control gas source interface 67, and then open the main control switch 64. One path of gas is discharged through the exhaust port of the oil / gas recovery connector interlock valve 55, and another path of gas enters the oil / gas recovery valve 51, causing the oil / gas recovery valve 51 to open. Subsequently, this path of gas reaches the compartment switch 65 through the oil / gas recovery valve 51. After opening the compartment switch 65, this path of gas reaches the loading / unloading valve 32 and the leveling pneumatic valve 41 through the second three-way valve, causing the loading / unloading valve 32 to open and the leveling pneumatic valve 41 to open. 41 is closed, then the bottom valve 36 is opened, and the liquid flows out of the tank 1 through the siphon pipe 31 and the liquid phase pipeline 33. At the same time, the outside atmosphere enters the tank 1 through the side plate vent valve 54. After the liquid in the tank 1 is emptied, the bottom valve 36 is closed, then the compartment switch 65 is closed, so that the loading and unloading valve 32 is closed and the flat pressure pneumatic valve 41 is opened. Then the main control switch 64 is closed, so that the oil and gas recovery valve 51 is closed. Finally, the external air source 11 is disconnected from the main control air source interface 67, and the connection between the loading and unloading pipeline of the ground facility and the loading and unloading joint 35 is disconnected.

[0034] If oil and gas recovery is required at the loading and unloading site during filling operations, connect the loading and unloading pipeline of the ground facility to the loading and unloading connector 35, connect the external gas source 11 to the main control gas source interface 67, connect the overflow protection interface of the ground facility to the overflow protection plug 62, and connect the ground oil and gas recovery facility to the oil and gas recovery connector 53. At this time, the switch on the oil and gas recovery connector interlock valve 55 will be triggered, causing the oil and gas recovery connector interlock valve 55 to open. Then, the main control switch 64 will be opened, and one gas path will pass through the oil and gas recovery connector interlock valve 55 to the side plate vent valve 54, causing the side plate vent valve 54 to close. Another gas path will enter the oil and gas recovery valve 51, causing the oil and gas recovery valve 51 to open. Subsequently, this gas path will pass through the oil and gas recovery valve 51 to the compartment switch 65. After that, the compartment switch 65 will be opened, and this gas path will pass through the second three-way valve to the loading and unloading valve 32 and the flat pressure pneumatic valve 41, causing the loading and unloading valve 32 to open while the flat pressure pneumatic valve 41 closes. Then, the bottom valve 36 is opened, and liquid is filled into the tank 1 through the liquid phase pipeline 33. At the same time, because the side plate vent valve 54 is closed, the oil and gas in the tank 1 will be recovered to the ground oil and gas recovery facility through the oil and gas recovery connector 53. During the filling process, the overflow probe 8 automatically monitors whether the liquid in the tank 1 has risen to the preset safety height. When the liquid height rises to the preset safety height, the overflow probe 8 automatically alarms, notifying the operator to stop filling. Then, the bottom valve 36 is closed first, and then the compartment switch 65 is closed, so that the loading and unloading valve 32 is closed while the flat pressure pneumatic valve 41 is opened. Then, the main control switch 64 is closed, so that the oil and gas recovery valve 51 is closed while the side plate vent valve 54 is opened. Then, the external air source 11 is disconnected from the main control air source interface 67. Connect the gas source interface 68 of the residual liquid discharge pipeline to allow gas to enter the liquid phase pipeline 33 through the gas source pipeline 75 and the air inlet pipe 77, blowing the residual liquid in the liquid phase pipeline 33 back into the tank 1. Finally, disconnect the external gas source 11 from the gas source interface 68 of the residual liquid discharge pipeline, disconnect the connection between the loading and unloading pipeline of the ground facility and the loading and unloading connector 35, disconnect the connection between the overflow protection interface of the ground facility and the overflow protection plug 62, and disconnect the connection between the ground oil and gas recovery facility and the oil and gas recovery connector 53. At this time, the interlock valve 55 of the oil and gas recovery connector is closed.

[0035] During unloading operations, if the loading / unloading station needs to fill tank 1 with gas to balance the pressure, connect the loading / unloading pipeline of the ground facility to the loading / unloading connector 35, connect the external gas source 11 to the main control gas source interface 67, and connect the ground oil and gas recovery facility to the oil and gas recovery connector 53. At this time, the switch on the oil and gas recovery connector interlock valve 55 will be triggered, causing the oil and gas recovery connector interlock valve 55 to open. Then, the main control switch 64 is opened, and one path of gas passes through the oil and gas recovery connector interlock valve 55 to the side plate vent valve 54, causing the side plate vent valve 54 to close. Another path of gas enters the oil and gas recovery valve 51, causing the oil and gas recovery valve 51 to open. Subsequently, this path of gas passes through the oil and gas recovery valve 51 to the compartment switch 65. After opening the compartment switch 65, this path of gas passes through the second three-way valve to the loading / unloading valve 32 and the leveling pneumatic valve 41, causing the loading / unloading valve 32 to open while the leveling pneumatic valve 41 closes. Then, open the bottom valve 36, and the liquid flows out of the tank 1 through the siphon pipe 31 and the liquid phase pipeline 33. At the same time, the balanced pressure gas provided by the ground oil and gas recovery facility enters the tank 1 through the gas phase pipeline 52. After the liquid in the tank 1 is emptied, close the bottom valve 36, then close the compartment switch 65, so that the loading and unloading valve 32 is closed and the equalizing pressure pneumatic valve 41 is opened. Then close the main control switch 64, so that the oil and gas recovery valve 51 is closed and the side plate vent valve 54 is opened. Finally, disconnect the external air source 11 from the main control air source interface 67, disconnect the loading and unloading pipeline of the ground facility from the loading and unloading connector 35, disconnect the ground oil and gas recovery facility from the oil and gas recovery connector 53, and at this time the oil and gas recovery connector interlock valve 55 is closed.

[0036] Through the above structure, the transport equipment for loading and unloading liquid dangerous goods of the present invention realizes pneumatic automation of the loading and unloading process, greatly reduces the direct contact between operators and dangerous goods, significantly reduces reliance on manual labor and operational risks, reduces safety accidents caused by human error, thereby greatly improving the safety of loading and unloading operations and increasing loading and unloading efficiency.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the specific technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A transport equipment for loading and unloading liquid dangerous goods, comprising a frame assembly (2), a tank (1) disposed within the frame assembly (2), and a liquid phase pipeline assembly (3) and a gas phase pipeline assembly (5) disposed on the tank (1); characterized in that: The gas phase pipeline assembly (5) includes a gas phase pipeline (52), an oil and gas recovery connector (53), an oil and gas recovery connector interlock valve (55), an oil and gas recovery valve (51) which are all pneumatic valves, and a side plate vent valve (54). The oil and gas recovery valve (51) is located on the top of the tank (1), and its oil and gas inlet end is connected to the inside of the tank (1), and its oil and gas outlet end is connected to the oil and gas recovery connector (53) through the gas phase pipeline (52). One end of the side plate vent valve (54) is connected to the atmosphere; the other end of the side plate vent valve (54) is connected to the gas phase pipeline (52) through the first tee (56), and the connection position is close to the oil and gas recovery valve (51); or, the other end of the side plate vent valve (54) passes through the top of the tank (1) and is connected to the inside of the tank (1). The interlock valve (55) of the oil and gas recovery connector is installed on the oil and gas recovery connector (53) and is normally closed; It also includes a control panel (6); the control panel (6) includes a main control air source interface (67) and a main control switch (64); the main control air source interface (67) is used to connect to an external air source (11); the air inlet of the main control switch (64) is connected to the main control air source interface (67) through an air pipe, and the air outlet is connected to the air inlet of the oil and gas recovery connector interlock valve (55) and the control IN terminal of the oil and gas recovery valve (51) through an air pipe respectively; the air outlet of the oil and gas recovery connector interlock valve (55) is connected to the control IN terminal of the side plate ventilation valve (54) through an air pipe; the side plate ventilation valve (54) is normally open when its control IN terminal does not receive air.

2. The transport equipment for loading and unloading liquid dangerous goods according to claim 1, characterized in that: The liquid phase pipeline assembly (3) includes a siphon (31), a loading and unloading valve (32), a liquid phase pipeline (33), and a loading and unloading connector (35). The loading and unloading valve (32) is located at the top of the tank (1) and is a pneumatic valve; the siphon pipe (31) is located inside the tank (1) and its upper end is connected to one end of the loading and unloading valve (32); the upper end of the liquid phase pipeline (33) is connected to the other end of the loading and unloading valve (32), and the lower end of the liquid phase pipeline (33) is connected to the loading and unloading connector (35); The control panel (6) also includes a compartment switch (65). The air inlet of the compartment switch (65) is connected to the control OUT terminal of the oil and gas recovery valve (51) through an air pipe, and the air outlet of the compartment switch (65) is connected to the air inlet of the loading and unloading valve (32) through an air pipe, which is used to control the loading and unloading valve (32) to open or close.

3. The transport equipment for loading and unloading liquid dangerous goods according to claim 2, characterized in that: The liquid phase pipeline assembly (3) also includes a bottom valve (36), which is connected between the lower end of the liquid phase pipeline (33) and the loading / unloading joint (35) for manual or pneumatic control of the connection and disconnection between the loading / unloading joint (35) and the liquid phase pipeline (33).

4. The transport equipment for loading and unloading liquid dangerous goods according to claim 3, characterized in that: It also includes a pressure equalization structure (4); the pressure equalization structure (4) includes a pressure equalization pneumatic valve (41), one end of which is connected to the upper end of the siphon (31) and the other end is connected to the inside of the tank (1) to balance the gas pressure in the gas phase space of the siphon (31) and the gas phase space of the tank (1); the pressure equalization pneumatic valve (41) is a pneumatic valve, the air inlet of the pressure equalization pneumatic valve (41) is connected to the air outlet of the compartment switch (65) through an air pipe, and the pressure equalization pneumatic valve (41) is normally open when its air inlet is not inlet.

5. The transport equipment for loading and unloading liquid dangerous goods according to claim 4, characterized in that: The pressure equalization structure (4) also includes a pressure equalization valve air pipe (42) and a siphon pipe opening valve seat (43). The siphon tube (31) has a through hole near its upper end. The siphon tube opening valve seat (43) is fixedly connected to the through hole. One end of the equalizing valve air pipe (42) is connected to the siphon tube opening valve seat (43), and the other end is connected to one end of the equalizing pneumatic valve (41). The equalizing pneumatic valve (41) is fixedly connected to the top of the tank body (1).

6. The transport equipment for loading and unloading liquid dangerous goods according to claim 4, characterized in that: It also includes a residual liquid drainage structure (7); the residual liquid drainage structure (7) includes a drain pipe (72), a gas source pipe (75) and an air inlet pipe (77); One end of the drain pipe (72) is connected to the top of the tank (1) through the drain pipe flange (71), and the other end is connected to the lower end of the liquid phase pipeline (33); a first check valve (73) is provided on the drain pipe (72), and the first check valve (73) is located close to the drain pipe flange (71); the diameter of the drain pipe (72) is smaller than the diameter of the liquid phase pipeline (33); The control panel (6) also includes a residual liquid drain line gas source interface (68). One end of the residual liquid drain line gas source interface (68) is used to connect to an external gas source (11), and the other end is connected to the upper end of the liquid phase pipeline (33) in sequence through a gas source pipeline (75) and an air inlet pipe (77). A second check valve (76) is provided on the air inlet pipe (77).

7. The transport equipment for loading and unloading liquid dangerous goods according to claim 3, characterized in that: The loading and unloading joint (35) is located below the outside of the tank body (1); the loading and unloading valve (32) is a sea valve; the bottom valve (36) is an API valve.

8. The transport equipment for loading and unloading liquid dangerous goods according to claim 1, characterized in that: The control panel (6) also includes a side panel vent valve indicator light (61), a main control indicator light (66), and a pressure gauge (63); the side panel vent valve indicator light (61) is connected to the control OUT terminal of the side panel vent valve (54) through an air pipe, the main control indicator light (66) is connected to the air outlet of the main control switch (64) through an air pipe, and the pressure gauge (63) is connected in series between the main control air source interface (67) and the main control switch (64).

9. The transport equipment for loading and unloading liquid dangerous goods according to claim 1, characterized in that: The gas phase pipeline assembly (5) also includes a gas phase pipeline hose (58), which is connected between the oil and gas recovery valve (51) and the gas phase pipeline (52); the oil and gas recovery connector (53) is located below the outside of the tank body (1).

10. The transport equipment for loading and unloading liquid dangerous goods according to claim 1, characterized in that: It also includes an anti-overflow probe (8) with anti-static function, which is set on the top of the tank (1); the control panel (6) also includes an overflow protection plug (62), which is connected to the overflow protection plug (62) by a wire, and the overflow protection plug (62) is used to connect to the overflow protection interface of the ground facility.

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