Tank type transport vehicle for dangerous goods

Abstract

The invention relates to a hazardous article tank type transport vehicle which comprises a chassis, a tank body and a rear cabinet, and the tank body and the rear cabinet are arranged on the chassis. A suction system is accommodated in the rear cabinet; the suction system comprises a buffer tank, a vacuum pump and a centrifugal pump; the vacuum pump is connected with the buffer tank through a suction pipeline and can pump out gas in the buffer tank; the centrifugal pump is connected with the buffer tank and the tank body through a water inlet pipe and a water outlet pipe respectively, and liquid in the buffer tank can be conveyed into the tank body. The tank type transport vehicle for the dangerous goods can be suitable for collecting and transporting liquid media with high-corrosivity dangerous goods, safety and reliability in the vehicle operation process are achieved, and the whole vehicle is protected to the maximum extent.

Description

Technical Field

[0001] The invention relates to a dangerous goods tank transport vehicle, belonging to the technical field of special vehicles. Background Art

[0002] In the prior art, liquid hazardous goods are transported by tank vehicles. These liquid hazardous goods are usually corrosive. In order to prevent the tank from being damaged by corrosion, a protective layer of non-metallic material is usually required for the parts in contact with the liquid.

[0003] However, existing tank vehicles use a vacuum pump to directly draw vacuum from the tank body, and pressurize the liquid into the tank body through the pressure difference between the inside and outside of the tank body. Since the tank body is made of metal and the lining is non-metallic, the fit between the two materials will gradually become damaged because the tank body is in a vacuum state, and then corrode the tank body, affecting the service life of the tank body. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned technology and provide a dangerous goods tank transport vehicle which can significantly extend the service life of the tank body.

[0005] In order to solve the above technical problems, the technical solution proposed in the present invention is: a dangerous goods tank transport vehicle, comprising: a chassis, a tank body and a rear cabinet, the tank body and the rear cabinet are arranged on the chassis; the rear cabinet accommodates a suction system; the suction system comprises: a buffer tank, a vacuum pump and a centrifugal pump; the vacuum pump is connected to the buffer tank through a suction pipeline, and can extract the gas in the buffer tank; the centrifugal pump is connected to the buffer tank and the tank body through a water inlet pipe and a water outlet pipe respectively, and can deliver the liquid in the buffer tank to the tank body.

[0006] A further improvement of the above scheme is that: the buffer tank has a high liquid level sensor and a low liquid level sensor; the outputs of the high liquid level sensor and the low liquid level sensor control the start and stop of the centrifugal pump. When the liquid level in the buffer tank is lower than the position of the low liquid level sensor, the centrifugal pump stops, and when the liquid level in the buffer tank reaches the position of the high liquid level sensor, the centrifugal pump starts.

[0007] A further improvement of the above scheme is that: there is a breathing valve on the top of the tank body; there are guide grooves on both sides of the top of the tank body; the guide grooves can guide the liquid on the top of the tank body to the backflow pipe; the backflow pipe is connected to a storage tank arranged at the bottom of the tank body.

[0008] A further improvement of the above scheme is that the outer surface of the tank body has an anti-corrosion layer.

[0009] A further improvement of the above solution is that: the bottom of the tank body is provided with a drain port.

[0010] A further improvement of the above scheme is that: the tank body is provided with a ladder for climbing; the top of the tank body is provided with a foldable handrail, and the top of the tank body is also provided with a top cover.

[0011] A further improvement of the above scheme is that the power of the vacuum pump and the centrifugal pump is taken from the chassis.

[0012] A further improvement of the above solution is that a front cabinet is also arranged on the chassis.

[0013] The hazardous goods tank transport vehicle provided by the present invention can be used for the collection and transportation of highly corrosive hazardous goods liquid media, thereby ensuring the safety and reliability of the vehicle operation process and protecting the entire vehicle to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure inside the middle and rear cabinet.

[0017] Figure 3 yes Figure 2 Schematic diagram of the structure from a frontal perspective.

[0018] Figure 4 yes Figure 2 Schematic diagram of the structure from a top-down perspective.

[0019] Figure 5 yes Figure 1 Schematic diagram of the vacuum pump structure.

[0020] The numbers in the figure are as follows: 1-chassis, 2-front cabinet, 3-tank body, 4-rear cabinet, 5-handrail, 6-ladder, 7-buffer tank, 8-centrifugal pump, 9-electrical control cabinet, 10-water inlet pipe, 11-water outlet pipe, 12-backflow pipe, 13-liquid level gauge, 14-liquid inlet pipe, 15-liquid outlet pipe, 16-storage tank, 17-centrifugal pump motor, 18-vacuum pump, 19-vacuum pump motor, 20-suction pipeline, 21-breathing valve. DETAILED DESCRIPTION

[0021] Embodiment: The hazardous goods tank transport vehicle of this embodiment includes: a chassis 1, a front cabinet 2, a tank body 3 and a rear cabinet 4. The front cabinet 2, the tank body 3 and the rear cabinet 4 are arranged on the chassis 1 in order. The front cabinet 2 is used to load vehicle operating tools and hoses required for suction, the tank body 3 is used to load liquid hazardous goods, and the rear cabinet 4 is used to accommodate the suction system. A ladder 6 is installed on the side of the tank body 3 to facilitate personnel to go up and down; there is a foldable handrail 5 on the top, which can provide certain protection for personnel when operating or repairing the tank body. The foldable handrail 5 is folded and stowed when not in use to prevent the vehicle from being too high. Both the front cabinet 2 and the rear cabinet 4 have necessary doors to facilitate the use, maintenance, and repair of the equipment. The top of the tank body 3 also has a manhole and a top cover that closes the manhole, which is used to inspect the inside of the tank body 3.

[0022] The suction system includes: a buffer tank 7, a vacuum pump 18 and a centrifugal pump 8; the vacuum pump 18 is connected to the buffer tank 7 through a suction pipeline 20; the centrifugal pump 8 is connected to the buffer tank 7 and the tank body 3 through a water inlet pipe 10 and a water outlet pipe 11 respectively. The vacuum pump 18 is driven by a vacuum pump motor 19, and the centrifugal pump 8 is driven by a centrifugal pump motor 17. Both the vacuum pump motor 19 and the centrifugal pump motor 17 are hydraulic motors, which take power from the chassis 1 through the chassis power take-off. If the transport vehicle is a new energy vehicle, the vacuum pump motor 19 and the centrifugal pump motor 17 can use electric motors. The buffer tank 7 has a high liquid level sensor and a low liquid level sensor; the outputs of the high liquid level sensor and the low liquid level sensor control the start and stop of the centrifugal pump.

[0023] The rear cabinet 4 also has an electrical control cabinet 9 for controlling valves and pumps, and a liquid level meter 13 that can be communicated with the tank body 3 .

[0024] The vehicle suction operation process is as follows: the operator drives the vehicle to the designated position and stops it, and then connects the suction hose and other structures, and then operates through the electrical control cabinet 9; first, the vacuum pump 18 is started, and the buffer tank 7 is evacuated through the suction pipeline 20; a vacuum is formed inside the buffer tank 7, and the external liquid is sucked close to the buffer tank 7 through the liquid inlet pipe 14. As the liquid level rises, the liquid in the buffer tank 7 reaches the position of the high liquid level sensor, the high liquid level sensor is triggered and sends a signal, then the centrifugal pump 8 starts to work, and the liquid is discharged into the tank body 3 through the water inlet pipe 10 and the water outlet pipe 11, realizing the vehicle suction operation; the liquid in the buffer tank 7 gradually decreases and reaches a position below the low liquid level sensor. The low liquid level sensor stops triggering, and the centrifugal pump 8 stops operating, and so on and so forth until the operation is completed, or the liquid level in the tank body 3 reaches a full load state, and the suction system can be shut down.

[0025] When the vehicle is discharging liquid, control is achieved through the gas-controlled seabed valve at the bottom of the tank body 3. The gas-controlled seabed valve is connected to the liquid outlet pipe 15. The liquid outlet pipe 15 extends to the rear of the vehicle, and a discharge interface is installed at the outlet of the liquid outlet pipe 15. Fixed-point discharge is achieved through quick connection, thereby realizing a closed loop from vehicle collection to discharge.

[0026] A breathing valve 21 is installed on the top of the tank body 3 to adjust the internal pressure of the tank body 3. The breathing valve 21 will inevitably produce some overflow, and if left unchecked, it will fall to the ground with rainwater, which may have an adverse impact on the environment. In the solution of this embodiment, there are guide grooves on both sides of the top of the tank body 3; the guide grooves can guide the liquid on the top of the tank body to the backflow pipe 12; the backflow pipe 12 is connected to the storage tank 16 arranged at the bottom of the tank body 3. In this way, overflow or rainwater is collected and processed to avoid any impact.

[0027] Considering that the tank body 3 is subjected to negative pressure for a long time, the rubber lining may deform and fall off, resulting in a greatly reduced service life of the tank body. In addition, the tank body 3 usually has a reinforcing rib structure, the rubber lining process is complicated and the bonding strength is not high.

[0028] Furthermore, there are also some problems with using a centrifugal pump directly. When a centrifugal pump is working, it needs to be filled with liquid first, and if the pumped liquid contains a large amount of gas during the operation of the centrifugal pump, the centrifugal pump will stop working.

[0029] The solution of this embodiment adds a buffer tank 7, and the liquid is introduced into the vacuum tank body by evacuating the buffer tank, thereby avoiding the problem of rubber lining falling off caused by the use of a vacuum pump in the tank body 3, and at the same time ensuring the stability of the centrifugal pump operation process and the continuity of the vehicle operation process.

[0030] In order to ensure the durability of the vehicle, an anti-corrosion layer may be lined on the outer surface of the tank body 3 to avoid indirect contact between the metal outer surface and the pumped medium, thereby increasing durability.

[0031] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementations. All technical solutions formed by equivalent replacement are within the protection scope required by the present invention.

Claims

1. A dangerous goods tank transport vehicle, comprising: A chassis, a tank body and a rear cabinet, wherein the tank body and the rear cabinet are arranged on the chassis; characterized in that: a suction system is accommodated in the rear cabinet; the suction system comprises: a buffer tank, a vacuum pump and a centrifugal pump; the vacuum pump is connected to the buffer tank through a suction pipeline and can extract the gas in the buffer tank; the centrifugal pump is connected to the buffer tank and the tank body through a water inlet pipe and a water outlet pipe respectively, and can deliver the liquid in the buffer tank to the tank body.

2. The dangerous goods tank transport vehicle according to claim 1, characterized in that: The buffer tank has a high liquid level sensor and a low liquid level sensor; the outputs of the high liquid level sensor and the low liquid level sensor control the start and stop of the centrifugal pump. When the liquid level in the buffer tank is lower than the position of the low liquid level sensor, the centrifugal pump stops, and when the liquid level in the buffer tank reaches the position of the high liquid level sensor, the centrifugal pump starts.

3. The dangerous goods tank transport vehicle according to claim 2, characterized in that: There is a breathing valve on the top of the tank body; there are guide grooves on both sides of the top of the tank body; the guide grooves can guide the liquid on the top of the tank body to the backflow pipe; the backflow pipe is connected to the storage tank arranged at the bottom of the tank body.

4. The dangerous goods tank transport vehicle according to claim 3, characterized in that: The outer surface of the tank body is provided with an anti-corrosion layer.

5. The dangerous goods tank transport vehicle according to claim 4, characterized in that: The bottom of the tank body passes through a drain port.

6. The dangerous goods tank transport vehicle according to claim 5, characterized in that: The tank body is provided with a ladder for climbing; the top of the tank body is provided with a foldable handrail, and the top of the tank body is also provided with a top cover.

7. The dangerous goods tank transport vehicle according to claim 6, characterized in that: The power of the vacuum pump and the centrifugal pump is taken from the chassis.

8. The dangerous goods tank transport vehicle according to claim 7, characterized in that: A front cabinet is also arranged on the chassis.

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