Liquid dangerous chemical unloading controller and unloading control method thereof

Abstract

The application relates to a liquid dangerous chemical product loading and unloading controller and a loading and unloading control method thereof, and relates to the technical field of liquid dangerous chemical product conveying. The controller comprises a mounting table, a power pump arranged on the mounting table, a conveying pipeline connected and communicated with both ends of the power pump, and a sealing assembly arranged at both ends of the conveying pipeline. The sealing assembly comprises a sealing rubber tube, a tightness adjusting piece and a first air pressure sensor. One end of the sealing rubber tube is fixedly sleeved on the outside of the conveying pipeline. The tightness adjusting piece is arranged at the end of the sealing rubber tube away from the conveying pipeline. The tightness adjusting piece is used for adjusting the opening size of the end of the sealing rubber tube away from the conveying pipeline. The first air pressure sensor is arranged in the sealing rubber tube. The conveying pipeline comprises an inner tube and an outer tube. The inner tube and the outer tube are concentrically arranged and are sealingly connected. A second air pressure sensor is arranged between the inner tube and the outer tube. The controller has the effect that loading and unloading can be stopped in time when leakage occurs.

Description

Technical Field

[0001] This application relates to the field of liquid hazardous chemical transportation, and in particular to a liquid hazardous chemical loading and unloading controller and its loading and unloading control method. Background Technology

[0002] Hazardous chemicals, also known as hazardous materials, refer to highly toxic chemicals and other chemicals that possess properties such as toxicity, corrosiveness, explosiveness, flammability, and oxidizing properties, posing a threat to human health, facilities, and the environment. After production, hazardous chemicals are transported via hazardous chemical transport vehicles to their destination for storage and use. This process involves numerous connection points, increasing the risk of leaks. If a leak occurs and the loading and unloading of hazardous chemicals is not stopped promptly, it can easily lead to a large-scale spill and a major accident. Summary of the Invention

[0003] In order to stop loading and unloading in time in the event of a leak, this application provides a liquid hazardous chemical loading and unloading controller.

[0004] The technical solution adopted in this application for a liquid hazardous chemical loading and unloading controller is as follows:

[0005] A liquid hazardous chemical loading and unloading controller includes an installation platform. A power pump is installed on the installation platform. Both ends of the power pump are connected to and communicate with a delivery pipe. A sealing assembly is installed at each end of the delivery pipe. The sealing assembly includes a sealing rubber tube, a tension adjustment component, and a first pressure sensor. One end of the sealing rubber tube is sleeved and fixed outside the delivery pipe. The tension adjustment component is installed at the end of the sealing rubber tube away from the delivery pipe and is used to adjust the size of the opening at the end of the sealing rubber tube away from the delivery pipe. The first pressure sensor is installed inside the sealing rubber tube. The delivery pipe includes an inner pipe and an outer pipe, which are concentrically arranged and sealed together. A second pressure sensor is installed between the inner pipe and the outer pipe.

[0006] By adopting the above technical solutions, the sealing assembly can seal the connection of the conveying pipeline, reducing the probability of direct external leakage of liquid hazardous chemicals. At the same time, the first pressure sensor monitors the airtightness in real time and can promptly report when a leak occurs at the connection of the conveying pipeline, thereby reducing the probability of major accidents. The outer pipe can collect the leaked liquid hazardous chemicals when the inner pipe ruptures, reducing the probability of direct leakage of liquid hazardous chemicals. At the same time, the second pressure sensor monitors the airtightness in real time and can promptly report when the inner pipe of the conveying pipeline ruptures, thereby reducing the probability of major accidents.

[0007] Optionally, the tension adjustment component includes a rubber ring and a tension rope, wherein the rubber ring is integrally formed into the sealing rubber tube, and the tension rope is inserted inside the sealing rubber tube.

[0008] Optionally, both the inner and outer tubes are corrugated pipes, and a number of connecting rods are provided between the inner and outer tubes. One end of each connecting rod is fixed to the outer wall of the inner tube, and the other end is fixed to the inner wall of the outer tube.

[0009] Optionally, one end of the mounting platform is provided with a fixing component, and the mounting platform is fixedly installed on the hazardous chemical transport vehicle by the fixing component. The side of the mounting platform away from the hazardous chemical transport vehicle and facing the ground is provided with a support leg, which abuts against the ground. The mounting platform is a metal platform body, and the support leg is a metal rod.

[0010] Optionally, the support leg includes a fixed part and a sliding part, the fixed part is rotatably mounted on the mounting platform, and the sliding part is inserted into the fixed part and slides along the length direction of the fixed part.

[0011] Optionally, the inner wall of the fixing part is provided with ratchet teeth, and the end of the sliding part inserted into the fixing part is provided with a pawl corresponding to the ratchet teeth. The ratchet teeth and pawl cooperate to restrict the sliding part from sliding towards the fixing part.

[0012] Optionally, both ends of the sliding part are provided with rings, and a linkage rod is provided between the two rings. The ring inserted into the fixed part drives the pawl to be housed in the sliding part.

[0013] Optionally, the fixing component includes a fixing rod and clamping blocks. The fixing rod is fixed on the mounting platform. There are two clamping blocks, both of which are slidably mounted on the fixing rod. The fixing rod is threaded, and adjusting nuts are threadedly connected to the opposite sides of the two clamping blocks.

[0014] A method for controlling the loading and unloading of liquid hazardous chemicals, comprising the following steps:

[0015] S1: Fixed mounting platform. Secure the mounting platform to the hazardous materials transport vehicle and ensure that the legs are grounded.

[0016] S2: Connects the two ends of the conveying process, connecting the hazardous chemical transport vehicle to the hazardous chemical input point or the hazardous chemical output point via a conveying pipeline;

[0017] S3: For transporting hazardous chemicals, start the power pump to transport the hazardous chemicals, and simultaneously start the first and second pressure sensors to monitor the airtightness in real time during the transport process. If the first or second pressure sensor detects an abnormal pressure, immediately stop the power pump;

[0018] S4: Disassemble the liquid hazardous chemical loading and unloading controller. After the transportation is completed, disassemble the liquid hazardous chemical loading and unloading controller to complete the loading and unloading of liquid hazardous chemicals.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The sealing assembly can seal the connection of the conveying pipeline, reducing the probability of direct external leakage of liquid hazardous chemicals. At the same time, the first pressure sensor monitors the airtightness in real time and can promptly report when a leak occurs at the connection of the conveying pipeline, thereby reducing the probability of major accidents. The outer pipe can collect the leaked liquid hazardous chemicals when the inner pipe ruptures, reducing the probability of direct leakage of liquid hazardous chemicals. At the same time, the second pressure sensor monitors the airtightness in real time and can promptly report when a leak occurs when the inner pipe of the conveying pipeline ruptures, thereby reducing the probability of major accidents.

[0021] 2. The legs are used to support the mounting platform. The mounting platform and metal rod, which are also conductive, can act as grounding wires, thereby reducing the probability of static electricity igniting flammable liquids when transporting them.

[0022] 3. The sliding part slides down to the ground under the action of gravity. At the same time, the presence of pawls and ratchet teeth restricts the storage of the sliding part, ensuring the support function of the legs. It can also adjust the height according to the actual situation of the mounting platform.

[0023] 4. By driving the ring inside the fixed part through the ring outside the fixed part, the pawl can be easily stored, which in turn makes it easy to store the sliding part after use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0025] Figure 2 yes Figure 1 A magnified view of section A in the middle.

[0026] Figure 3 This is a schematic diagram of the overall structure of an embodiment of this application from another perspective.

[0027] Figure 4 yes Figure 3 A magnified view of section B in the middle.

[0028] In the diagram, 1. Mounting platform; 2. Power pump; 3. Delivery pipeline; 31. Inner pipe; 32. Outer pipe; 4. Flange; 5. Sealing assembly; 51. Sealing rubber hose; 52. Tension adjustment component; 521. Rubber ring; 522. Tension rope; 53. First air pressure sensor; 6. Second air pressure sensor; 7. Connecting rod; 8. Fixing component; 81. Fixing rod; 82. Clamping block; 9. Support leg; 91. Fixing part; 92. Sliding part; 10. Elastic bandage; 11. Racket; 12. Pawl; 13. Spring; 14. Ring; 15. Linkage rod; 16. Thread; 17. Adjusting nut. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 The present application will be further described with reference to specific embodiments:

[0030] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] This application discloses a liquid hazardous chemical loading and unloading controller, referring to... Figure 1 and Figure 2The system includes a rectangular mounting platform 1, on which a power pump 2 is fixedly mounted by bolts. The power pump 2 is electrically connected to a control unit, which controls the opening and closing of the power pump 2. In this embodiment, the power pump 2 is a power pump for conveying liquid hazardous chemicals. Both ends of the power pump 2 are connected and connected to a conveying pipe 3. Both ends of the conveying pipe 3 are provided with flanges 4, which are connected and connected to the power pump 2. Both ends of the conveying pipe 3 are provided with sealing components 5. The sealing components 5 include a sealing rubber tube 51, a tension adjusting component 52, and a first pressure sensor 53. One end of the sealing rubber tube 51 is sleeved and fixed outside the conveying pipe 3, and the tension adjusting component 52 is installed at the end of the sealing rubber tube 51 away from the conveying pipe 3. The tension adjustment component 52 is used to adjust the opening size of the sealing rubber tube 51 at the end away from the conveying pipe 3. When the conveying pipe 3 is connected to a hazardous chemical transport vehicle or a hazardous chemical storage room via a flange, adjusting the opening size allows the end of the sealing rubber tube 51 away from the conveying pipe 3 to be sealed and fitted onto the object connected to the conveying pipe 3, thereby sealing the connection of the conveying pipe 3 through the sealing rubber tube 51. The first pressure sensor 53 is disposed inside the sealing rubber tube 51. In this embodiment, the first pressure sensor 53 is fixedly disposed on the flange 4 located inside the sealing rubber tube 51. The first pressure sensor 53 is preferably disposed in an area on the side wall of the flange 4 that does not affect the connection of the flange 4. The first pressure sensor 53 is electrically connected to the control unit. In this example, a wireless signal generator is installed on the first pressure sensor 53, which is electrically connected to the control unit via a radio signal to ensure the sealing of the rubber tube 51. The first pressure sensor 53 can monitor the air pressure inside the rubber tube 51 in real time and feed it back to the control unit via a radio signal. When a liquid hazardous chemical leaks from the connection of the conveying pipeline 3, the liquid hazardous chemical enters the sealed rubber tube 51, causing a change in the air pressure detected by the first pressure sensor 53, resulting in an increase in air pressure. The first pressure sensor 53 feeds back a first air pressure detection signal to the control unit. When the first air pressure detection signal is higher than a preset first warning value, the power pump 2 is controlled to shut down, stopping the delivery of the liquid hazardous chemical, thereby reducing the risk of the leak expanding and causing a major accident. The conveying pipeline 3 includes an inner pipe 31 and an outer pipe 32, which are concentrically arranged and connected to flanges 4 at both ends. The inner pipe 31 is connected to the power pump 2 through flanges 4. The inner pipe 31 and the outer pipe 32 are sealed together to form a closed space. A second pressure sensor 6 is installed between the inner pipe 31 and the outer pipe 32. The second pressure sensor 6 is electrically connected to the control unit. In this embodiment, the second pressure sensor 6 is equipped with a wireless signal generator, which is electrically connected to the control unit via radio signals to ensure the sealing between the inner pipe 31 and the outer pipe 32. The second pressure sensor 6 can monitor the air pressure between the inner pipe 31 and the outer pipe 32 in real time and feed it back to the control unit via radio signals. When the inner pipe 31 ruptures and there is a leak of liquid hazardous chemicals,The entry of liquid hazardous chemicals between the outer pipe 32 and the inner pipe 31 causes a change in the pressure detected by the second pressure sensor 6, resulting in an increase in pressure. The second pressure sensor 6 feeds back a second pressure detection signal to the control unit. When the second pressure detection signal exceeds a second warning value, the control unit shuts down the power pump 2, stopping the delivery of the liquid hazardous chemicals and thus reducing the probability of the leak escalating and causing a major accident.

[0032] Reference Figure 1 and Figure 2 The tension adjustment component 52 includes a rubber ring 521 and a tension rope 522. The rubber ring 521 is integrally formed on the sealing rubber tube 51, and the tension rope 522 is inserted into the sealing rubber tube 51. In this embodiment, the rubber ring 521 has several notches to facilitate the insertion of the tension rope 522. By tightening the tension rope 522, the opening deformation of the sealing rubber tube 51 can be driven to control the opening size of the sealing rubber tube 51, and it can be fixed by tying the tension rope 522. In this application, a higher strength steel wire rope can be used for the tension rope 522.

[0033] Reference Figure 1 and Figure 2 Both the inner tube 31 and the outer tube 32 are corrugated pipes made of rubber. Several connecting rods 7 are provided between the inner tube 31 and the outer tube 32. In this embodiment, there are several groups of four connecting rods 7. The groups of connecting rods 7 are evenly distributed along the length of the conveying pipe 3. One end of the connecting rod 7 is fixed to the outer wall of the inner tube 31 and the other end is fixed to the inner wall of the outer tube 32. The connecting rod 7 is a rubber tube integrally formed with the inner tube 31 and the outer tube 32. The corrugations of the inner tube 31 and the outer tube 32 are parallel, which facilitates simultaneous unfolding and folding. When unfolding or overlapping, the length of the connecting rod 7 remains unchanged. The connecting rod 7 can simultaneously drive the inner tube 31 and the outer tube 32 to fold and unfold, and can also ensure the concentricity of the inner tube 31 and the outer tube 32, while providing installation space for the second air pressure sensor 6.

[0034] Reference Figure 3 and Figure 4One end of the mounting platform 1 is provided with a fixing member 8. In this embodiment, two sets of fixing members 8 are provided. The fixing member 8 includes a fixing rod 81 and clamping blocks 82. The fixing rod 81 is vertically fixed to the upper surface of the mounting platform 1. Each set of fixing members 8 has two clamping blocks 82, and both clamping blocks 82 are slidably mounted on the fixing rod 81. The fixing rod 81 is threaded with a thread 16. Adjusting nuts 17 are threaded to the opposite side of the two clamping blocks 82 on the fixing rod 81. By rotating the adjusting nuts 17, the two clamping blocks 82 are driven to slide, and the two clamping blocks 82 are clamped and fixed to the hazardous chemical transport vehicle. At the same time, by adjusting the position of the two clamping blocks on the fixing rod 81, the mounting platform 1 can be adjusted in the hazardous chemical transport vehicle. The height of the chemical transport vehicle is adjusted to accommodate vehicles of different heights. The mounting platform 1 is fixedly installed on the chemical transport vehicle by fasteners 8. A support leg 9 is provided on the side of the mounting platform 1 facing the ground away from the chemical transport vehicle. The support leg 9 rests against the ground. The mounting platform 1 is a metal platform with conductive function, and the support leg 9 is a metal rod with conductive function. In this embodiment, both the metal platform and the metal rod are made of copper alloy. The support leg 9 is used to support the mounting platform 1. At the same time, the conductive mounting platform 1 and the metal rod can act as grounding wires, thereby reducing the probability of static electricity igniting flammable liquid hazardous chemicals when transporting them. In this embodiment, two support legs 9 are provided.

[0035] Reference Figure 3 and Figure 4The support leg 9 includes a fixed part 91 and a sliding part 92. In this embodiment, both the fixed part 91 and the sliding part 92 are rods. The fixed part 91 is rotatably mounted on the mounting platform 1 and is a hollow rod. The sliding part 92 is inserted into the fixed part 91 and slides along the length of the fixed part 91. An elastic bandage 10 is fixed on the mounting platform 1. The elastic bandage 10 is used to fix the support leg 9 and restrict its rotation when the support leg 9 rotates to a horizontal position. A ratchet 11 is provided on the inner wall of the fixed part 91. The sliding part 92 is inserted into the fixed part 91 and rotates to correspond to the ratchet 11. The device has a pawl 12 and a ratchet 11. The pawl 12 works together to restrict the sliding part 92 from sliding towards the fixed part 91. Two rows of ratchet 11 are arranged on the inner wall of the fixed part 91, and two pawls 12 are arranged corresponding to the ratchet 11. A spring 13 is arranged between the pawl 12 and the sliding part 92. The spring 13 drives the pawl 12 to rotate away from the sliding part 92. When the fixed part 91 rotates to a vertical position, the sliding part 92 slides down to the ground under the action of gravity. At the same time, the presence of the pawl 12 and the ratchet 11 restricts the sliding part 92 from sliding, ensuring the stability of the support leg 9. The sliding part 92 provides support and can also adjust its height according to the actual situation of the mounting platform 1. Both ends of the sliding part 92 are equipped with sliding rings 14, and a linkage rod 15 is provided between the two rings 14. In this embodiment, two linkage rods 15 are provided and embedded in the sliding part 92. The two linkage rods 15 are misaligned with the ratchet 11 and pawl 12. The ring 14 inserted into one end of the fixed part 91 drives the pawl 12 to compress the spring 13 and retract the pawl 12 into the sliding part 92. The ring 14 located outside the fixed part 91 drives the pawl 12 located outside the fixed part 91. The ring 14 inside 91 facilitates the storage of the pawl 12, thereby facilitating the storage of the sliding part 92 after use. The ring 14 is fixed to the sliding part 92 by friction. When the friction of the ring 14 is insufficient, the sliding part can be fixed by drilling holes in the ring 14 at the end away from the fixed part 91 and installing bolts. In order to ensure that the length of the support leg 9 is sufficient, an extension part for sliding can be added inside the sliding part 92. The connection structure between the extension part and the sliding part 92 is the same as the connection structure between the fixed part 91 and the sliding part 92.

[0036] A method for controlling the loading and unloading of liquid hazardous chemicals includes the following steps: S1: Fixing the mounting platform 1, clamping and fixing the mounting platform 1 to the hazardous chemical transport vehicle using the fixing component 8, and adjusting the height of the mounting platform 1 according to the inlet and outlet height of the hazardous chemical transport vehicle, then rotating the support leg 9 to a vertical position and grounding it by sliding the sliding part 92; S2: Connecting the two ends of the transport, connecting the hazardous chemical transport vehicle to the hazardous chemical input point or connecting the hazardous chemical transport vehicle to the hazardous chemical output point through the transport pipe 3, and simultaneously sealing the connection of the transport pipe 3 with the sealing component 5, and observing the connection after the connection is completed. S3: The detection values ​​of the first pressure sensor 53 and the second pressure sensor 6 are recorded as preset values; S4: Transporting hazardous chemicals, start the power pump 2 to transport hazardous chemicals, and at the same time start the first pressure sensor 53 and the second pressure sensor 6 to monitor the airtightness in real time during the transport process. When the first pressure sensor 53 or the second pressure sensor 6 detects that the air pressure is abnormal to the preset value, the power pump 2 is stopped immediately to eliminate the leakage fault; S5: Disassemble the liquid hazardous chemical loading and unloading controller. After the fault is eliminated or no fault occurs until the transport is completed, the liquid hazardous chemical loading and unloading controller is disassembled to complete the loading and unloading of liquid hazardous chemicals.

[0037] The implementation principle of this application embodiment is as follows: when loading liquid hazardous chemicals, the hazardous chemical transport vehicle and the hazardous chemical output point are connected through flange 4; when unloading liquid hazardous chemicals, the hazardous chemical transport vehicle and the hazardous chemical input point are connected through flange 4. Power is provided by the power pump 2 to transport the liquid hazardous chemicals. When a leak occurs at the connection of the transport pipeline 3, the leaked liquid hazardous chemicals enter the sealing rubber tube 51, causing a change in the air pressure inside the sealing rubber tube 51. After detecting the air pressure change, the first air pressure sensor 53 reports the leak and stops the operation of the power pump 2 to prevent further leakage. If a leak escalates and causes a major accident, the sealing rubber tube 51 can contain a small amount of leaked liquid hazardous chemicals, preventing the liquid hazardous chemicals from flowing out and polluting the environment. When the conveying pipeline 3 ruptures and leaks, the leaked liquid hazardous chemicals enter between the outer tube 32 and the inner tube 31, causing a change in the air pressure between the outer tube 32 and the inner tube 31. After the second air pressure sensor 6 detects the change in air pressure, it reports the leak and stops the operation of the power pump 2, preventing the leak from escalating and causing a major accident. At the same time, the outer tube 32 can contain a small amount of leaked liquid hazardous chemicals, preventing the liquid hazardous chemicals from flowing out and polluting the environment.

[0038] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A liquid hazardous chemical loading and unloading controller, characterized in that: The system includes an installation platform (1), on which a power pump (2) is installed. Both ends of the power pump (2) are connected to and connected to a conveying pipe (3). Both ends of the conveying pipe (3) are equipped with sealing components (5). The sealing components (5) include a sealing rubber tube (51), a tension adjusting component (52), and a first air pressure sensor (53). One end of the sealing rubber tube (51) is sleeved and fixed outside the conveying pipe (3), and the tension adjusting component (52) is installed... The sealing rubber tube (51) is installed at the end away from the conveying pipe (3). The tension adjustment component (52) is used to adjust the opening size of the sealing rubber tube (51) away from the conveying pipe (3). The first air pressure sensor (53) is installed inside the sealing rubber tube (51). The conveying pipe (3) includes an inner tube (31) and an outer tube (32). The inner tube (31) and the outer tube (32) are arranged concentrically and are sealed together. The inner tube (31) and the outer tube (32) are connected in a sealed manner. A second pressure sensor (6) is installed between (32). Both the inner tube (31) and the outer tube (32) are corrugated pipes made of rubber. The first pressure sensor (53) and the second pressure sensor (6) shut off the power pump (2) after detecting an increase in air pressure. A fixing part (8) is provided at one end of the mounting platform (1). The mounting platform (1) is fixedly installed on the hazardous chemical transport vehicle by the fixing part (8). A support leg (9) is provided on the side of the mounting platform (1) facing the ground away from the hazardous chemical transport vehicle. (9) Abutting against the ground, the mounting platform (1) is a metal platform, and the support leg (9) is a metal rod; the fixing component (8) includes a fixing rod (81) and a clamping block (82). The fixing rod (81) is fixed on the mounting platform (1). There are two clamping blocks (82). Both clamping blocks (82) are slidably set on the fixing rod (81). The fixing rod (81) is provided with a thread (16). The fixing rod (81) is threaded with an adjusting nut (17) on the opposite side of the two clamping blocks (82). The tension adjustment component (52) includes a rubber ring (521) and a tension rope (522). The rubber ring (521) is integrally formed on the sealing rubber tube (51), and the tension rope (522) is inserted inside the sealing rubber tube (51). The support leg (9) includes a fixed part (91) and a sliding part (92). The fixed part (91) is rotatably disposed on the mounting platform (1), and the sliding part (92) is inserted into the fixed part (91) and slides along the length direction of the fixed part (91). The inner wall of the fixing part (91) is provided with ratchet (11), and the sliding part (92) is inserted into the fixing part (91) and is provided with pawl (12) corresponding to the ratchet (11). The ratchet (11) and pawl (12) cooperate to restrict the sliding part (92) from sliding towards the fixing part (91).

2. The liquid hazardous chemical loading and unloading controller according to claim 1, characterized in that: Both the inner tube (31) and the outer tube (32) are corrugated pipes. The corrugations of the inner tube (31) and the outer tube (32) are parallel. Several connecting rods (7) are provided between the inner tube (31) and the outer tube (32). One end of the connecting rod (7) is fixed to the outer wall of the inner tube (31) and the other end is fixed to the inner wall of the outer tube (32).

3. A liquid hazardous chemical loading and unloading controller according to claim 1, characterized in that: Both ends of the sliding part (92) are provided with ring sleeves (14), and a linkage rod (15) is provided between the two ring sleeves (14). The ring sleeve (14) inserted into the fixed part (91) drives the pawl (12) to be stored in the sliding part (92).

4. A method for controlling the loading and unloading of liquid hazardous chemicals, used in the liquid hazardous chemicals loading and unloading controller according to any one of claims 1-3, comprising the following steps: S1: Fix the mounting platform (1), fix the mounting platform (1) to the hazardous chemical transport vehicle, and make the support legs (9) abut against the ground for grounding; S2: Connects the two ends of the conveying process, and connects the hazardous chemical transport vehicle to the hazardous chemical input point through the conveying pipeline (3) or connects the hazardous chemical transport vehicle to the hazardous chemical output point through the conveying pipeline (3); S3: When transporting hazardous chemicals, start the power pump (2) to transport the hazardous chemicals, and at the same time start the first pressure sensor (53) and the second pressure sensor (6) to monitor the airtightness in real time during the transport process. When the first pressure sensor (53) or the second pressure sensor (6) detects an abnormal air pressure, immediately stop the power pump (2); S4: Disassemble the liquid hazardous chemical loading and unloading controller. After the transportation is completed, disassemble the liquid hazardous chemical loading and unloading controller to complete the loading and unloading of liquid hazardous chemicals.

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