Ammonium nitrate solution tank truck with automatic spraying system

Abstract

The utility model belongs to the field of safe transportation of hazardous chemicals, and discloses an ammonium nitrate solution tank truck with an automatic spraying system. A tank body is arranged on the tank car main body; the interior of the tank body is divided into three parts, namely an ammonium nitrate solution storage tank, a placement tank and a diluent storage tank; a pump is arranged in the placing tank, an inlet pipeline of the pump extends into the diluent storage tank, and an outlet pipeline of the pump is respectively connected to a spraying pipeline outside the tank body and a diluting pipeline at the bottom of the ammonium nitrate solution storage tank; a nozzle is arranged on the spraying pipeline, and a diluting and stirring device is arranged on the bottom diluting pipeline; a discharge port is formed in the ammonium nitrate solution storage tank. The structure of an existing ammonium nitrate solution tank car is improved, so that the tank car has high safety performance.

Description

Technical Field

[0001] The utility model belongs to the field of safe transportation of hazardous chemicals, and in particular relates to an ammonium nitrate solution tank truck with an automatic spraying system. Background Art

[0002] Ammonium nitrate (NH4NO3,) is a colorless, odorless, transparent crystal or white small granule, which is deliquescent. It is easily soluble in water, ethanol, acetone, and ammonia water, but insoluble in ether. It will explode when mixed with flammable and combustible materials or heated sharply. It is mainly used as fertilizer, analytical reagent, oxidant, refrigerant, fireworks and explosive raw materials. However, there are some potential safety hazards when ammonium nitrate exists in liquid state. The danger of ammonium nitrate solution mainly comes from the thermal decomposition of ammonium nitrate. The heated and molten liquid ammonium nitrate partially decomposes into ammonia and nitric acid, and the nitric acid further decomposes to produce nitrogen dioxide. Ammonia is oxidized by nitrogen dioxide and a violent redox reaction occurs. Therefore, it needs to be shipped separately during transportation, and during transportation, it is necessary to ensure that the container does not leak, collapse, fall or be damaged. During transportation, the transport vehicle should be equipped with the corresponding types and quantities of fire-fighting equipment. It is strictly forbidden to mix and transport with flammable (combustible) materials, reducing agents, acids, active metal powders, etc.

[0003] Since ammonium nitrate solution is easy to crystallize, the storage tank must provide necessary heating facilities and perform thermal insulation treatment on the tank body. In order to avoid the danger of excessive temperature of liquid ammonium nitrate, the temperature inside the storage tank needs to be monitored. Patent CN 217101429 U discloses an ammonium nitrate solution tank truck with an automatic discharge system, including a vehicle body and a tank body located on the vehicle body, the tank truck is provided with an automatic discharge system, the automatic discharge system includes an external temperature sensor, an internal temperature sensor, a discharge device and an alarm control device, multiple external temperature sensors and internal temperature sensors are provided on the outer walls of both sides of the tank body, ammonium nitrate solution discharge ports are provided on both sides of the tank body, and an automatic discharge device based on the solution temperature is embedded in the discharge port, the discharge device is used to connect the internal space of the tank body with the outside world in an emergency, and discharge the ammonium nitrate solution inside the tank body, and the alarm control device is arranged inside the cab of the vehicle body, and is respectively connected to the external temperature sensor, the internal temperature sensor and the discharge device. However, this patent only releases the ammonium nitrate solution inside the tank to the outside of the tank before the temperature gets out of control, and does not solve the problem of emergency disposal. The utility model proposes an ammonium nitrate solution tank truck with an automatic spraying system, which uses the automatic spraying system for emergency water injection and spraying the external tank, thereby diluting the solution and cooling the tank body to prevent the ammonium nitrate from exploding due to heat. Utility Model Content

[0004] The utility model overcomes the defects of the prior art and provides an ammonium nitrate solution tanker with an automatic spraying system. The utility model improves the structure of the existing ammonium nitrate solution tanker, so that the tanker has high safety performance.

[0005] The purpose of the present invention is achieved by at least one of the following technical solutions.

[0006] An ammonium nitrate solution tank truck with an automatic spraying system comprises a tank body on the tank truck body; the inner part of the tank body is divided into three parts: an ammonium nitrate solution storage tank, a placement tank and a diluent storage tank; a pump is arranged in the placement tank, the inlet pipe of the pump extends to the inside of the diluent storage tank, and the outlet pipe of the pump is respectively connected to a spray pipe outside the tank body and a dilution pipe at the bottom of the ammonium nitrate solution storage tank; a nozzle is arranged on the spray pipe, and a dilution stirring device is arranged on the bottom dilution pipe; a discharge port is opened on the ammonium nitrate solution storage tank.

[0007] Furthermore, a sealing door is provided on the discharge port.

[0008] Furthermore, the dilution and stirring device is composed of a stirring blade, a liquid outlet, a fan blade structure and a bearing; a liquid outlet is opened on the side of the dilution and stirring device, and a connecting rod is connected to the dilution and stirring device through a bearing, the top of the connecting rod extends out of the dilution and stirring device and is connected to the stirring blade, and the bottom of the connecting rod is connected to the fan blade structure.

[0009] Furthermore, a heat-insulating interlayer is provided on the wall surface of the tank body.

[0010] Furthermore, the thermal insulation interlayer is filled with polyurethane material or rock wool.

[0011] Furthermore, the thickness of the thermal insulation interlayer is 100-200 mm, preferably 100 mm.

[0012] Furthermore, the utility model also includes a temperature measuring device; the temperature measuring device is arranged on the top of the inner wall and the bottom of the side of the ammonium nitrate solution storage tank, and is used to detect the temperature inside the ammonium nitrate solution storage tank.

[0013] Furthermore, the ammonium nitrate solution storage tank is used to store ammonium nitrate solution.

[0014] Furthermore, the diluent storage tank is used to store desalted water or distilled water.

[0015] Furthermore, the spray pipe is connected with a valve.

[0016] Furthermore, the dilution pipeline is connected with a valve and a check valve.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) The utility model improves the existing tank trucks by adding spray equipment and dilution equipment, which effectively improves the safety performance of the tank trucks. In case of emergencies, it can respond and reduce losses.

[0019] (2) By modifying the dilution and stirring device, the dilution and stirring components are combined into one, which greatly simplifies the parts replacement process of the tank truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the internal structure of an ammonium nitrate solution tanker with an automatic spraying system according to the utility model;

[0021] Figure 2 This is a rear view of the tank truck;

[0022] Figure 3 It is a cross-sectional view of the tank;

[0023] Figure 4 It is a structural schematic diagram of the dilution and stirring device;

[0024] Figure 5 This is a schematic diagram of the fan blade structure.

[0025] The components in the figure are as follows: tank truck body 1, tank body 2, ammonium nitrate solution storage tank 2.1, placement tank 2.2, diluent storage tank 2.3, pump 3, nozzle 4, dilution stirring device 5, stirring blade 5.1, liquid outlet 5.2, fan blade structure 5.3, bearing 5.4, temperature measuring device 6, discharge port 7, thermal insulation interlayer 8, valve 9, check valve 10. DETAILED DESCRIPTION

[0026] The present invention is described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention but are not used to limit the scope of the present invention.

[0027] like Figure 1 As shown, an ammonium nitrate solution tank truck with an automatic spraying system has a tank body 2 disposed on the tank truck body 1; the interior of the tank body 2 is divided into three parts: an ammonium nitrate solution storage tank 2.1, a placement tank 2.2 and a diluent storage tank 2.3, wherein the interior of the ammonium nitrate solution storage tank 2.1 is used to store ammonium nitrate solution, and the interior of the diluent storage tank 2.3 is used to store desalted water or distilled water; a pump 3 is disposed in the placement tank 2.2, and the inlet pipe of the pump extends to the inside of the diluent storage tank 2.3, and the outlet pipe of the pump 3 is respectively connected to the spray pipe outside the tank body 2 and the dilution pipe at the bottom of the ammonium nitrate solution storage tank 2.1; a nozzle 4 is disposed on the spray pipe. Figure 1In the embodiment shown, a valve 9 is provided on the spray pipe to control whether the nozzle on the spray pipe sprays liquid to cool the tank. In order to avoid the danger of excessive temperature of liquid ammonium nitrate, the temperature in the storage tank needs to be monitored. When the temperature is higher than 130°C, an alarm will be sounded through the tweeter; when the temperature is higher than 135°C, the sprinkler switch needs to be turned on to automatically spray water for more than half an hour. Unless the water or power is cut off manually, the sprinkler cannot be turned off. In this embodiment, when the temperature is higher than 135°C, the controller controls the pump and the spray pipe to spray water to cool the tank.

[0028] In this embodiment, a dilution stirring device 5 is provided on the bottom dilution pipe, and a discharge port 7 is provided on the ammonium nitrate solution storage tank 2.1. Correspondingly, a sealing door is provided on the discharge port 7, and when the ammonium nitrate solution needs to be discharged, the sealing door can be opened to discharge the ammonium nitrate solution.

[0029] like Figure 4 and Figure 5 As shown, the dilution and stirring device 5 in this embodiment is composed of a stirring blade 5.1, a liquid outlet 5.2, a fan blade structure 5.3 and a bearing 5.4; a liquid outlet 5.2 is opened on the side of the dilution and stirring device 5, and a connecting rod is connected to the dilution and stirring device 5 through a bearing 5.4, the top of the connecting rod extends out of the dilution and stirring device and is connected to the stirring blade 5.1, and the bottom of the connecting rod is connected to the fan blade structure 5.3. When the concentration of the ammonium nitrate solution in the ammonium nitrate solution storage tank 2.1 of the dilution and stirring device needs to be diluted, the desalted water or distilled water in the dilution liquid storage tank 2.3 is pumped through the dilution pipeline, and the fan blade structure 5.3 is driven by the water flow, and then the connecting rod is driven to realize the rotation of the stirring blade 5.1. At the same time, the desalted water or distilled water can enter the tank body through the liquid outlet 5.2 for dilution. Figure 1 As shown, in this embodiment, a valve 9 and a check valve 10 are also provided on the dilution pipeline to control whether the dilution liquid (deionized water or distilled water) inside the dilution pipeline enters the ammonium nitrate solution storage tank 2.1, and to prevent the ammonium nitrate solution in the ammonium nitrate solution storage tank 2.1 from flowing back. In this embodiment, when the temperature inside the tank is higher than 135°C, dilution treatment is required.

[0030] Since ammonium nitrate solution is easy to crystallize, the concentration of ammonium nitrate solution in some areas will be different after crystallization, which has a certain impact on the preparation of the aqueous solution, so the tank body needs to be insulated during transportation. The concentration of liquid ammonium nitrate distributed by the manufacturer is controlled between 92% and 93%, and the crystallization point of ammonium nitrate solution is about 108°C, so the temperature in the tank should be controlled between 110°C and 125°C. In this embodiment, a thermal insulation interlayer 8 is provided on the wall of the tank body 2. The thermal insulation interlayer 8 is filled with polyurethane material or rock wool. The thickness of the thermal insulation interlayer 8 is 100~200mm, and 100 mm rock wool is used in this embodiment.

[0031] This embodiment also includes a temperature measuring device 6; the temperature measuring device 6 is arranged on the top of the inner wall surface and the bottom of the side of the ammonium nitrate solution storage tank 2.1, and is used to detect the temperature inside the ammonium nitrate solution storage tank 2.1, and the detection signal is transmitted to the cab. In order to avoid the danger of excessive temperature of liquid ammonium nitrate, it is necessary to monitor the temperature in the storage tank. When the temperature is higher than 130°C, an alarm will be issued through the tweeter. The cab needs to pay attention to whether the temperature rises. If it reaches 135°C, the pump, valve 9 and check valve 10 need to be opened to dilute and spray to cool down.

Claims

1. An ammonium nitrate solution tanker with an automatic spraying system, characterized in that: A tank body (2) is arranged on the tank truck body (1); the interior of the tank body (2) is divided into three parts: an ammonium nitrate solution storage tank (2.1), a placement tank (2.2) and a diluent storage tank (2.3); a pump (3) is arranged in the placement tank (2.2), an inlet pipe of the pump extends to the inside of the diluent storage tank (2.3), and an outlet pipe of the pump (3) is respectively connected to a spray pipe outside the tank body (2) and a dilution pipe at the bottom of the ammonium nitrate solution storage tank (2.1); The spray pipe is provided with a nozzle (4), and the bottom dilution pipe is provided with a dilution stirring device (5); The ammonium nitrate solution storage tank (2.1) is provided with a discharge port (7).

2. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: The discharge port (7) is provided with a sealing door.

3. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: The dilution stirring device (5) is composed of a stirring blade (5.1), a liquid outlet (5.2), a fan blade structure (5.3) and a bearing (5.4); a liquid outlet (5.2) is provided on a side of the dilution stirring device (5); a connecting rod is connected to the dilution stirring device (5) via a bearing (5.4); the top of the connecting rod extends outside the dilution stirring device and is connected to the stirring blade (5.1); and the bottom of the connecting rod is connected to the fan blade structure (5.3).

4. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: A heat-insulating interlayer (8) is provided on the wall surface of the tank body (2).

5. The ammonium nitrate solution tanker with an automatic spraying system according to claim 4, characterized in that: The thermal insulation interlayer (8) is filled with polyurethane material or rock wool.

6. The ammonium nitrate solution tanker with an automatic spraying system according to claim 4, characterized in that: The thickness of the thermal insulation interlayer (8) is 100-200 mm.

7. The ammonium nitrate solution tanker with an automatic spraying system according to claim 4, characterized in that: The thickness of the thermal insulation interlayer (8) is 100 mm.

8. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: It also includes a temperature measuring device (6); the temperature measuring device (6) is arranged on the top of the inner wall surface and the bottom of the side surface of the ammonium nitrate solution storage tank (2.1).

9. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: The spray pipe is connected to a valve (9).

10. The ammonium nitrate solution tanker with an automatic spraying system according to claim 1, characterized in that: The dilution pipeline is connected to a valve (9) and a check valve (10).

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