Liquid chlorine tank truck preheating liquid discharge device

Abstract

The utility model relates to a kind of liquid chlorine tank truck preheating liquid discharge device in liquid chlorine tank truck technical field, including the top canopy support and hot water pipe network of suspension in the upper of liquid chlorine tank truck, two spray water pipes are respectively arranged in the upper of tank body left and right sides, hot water pipe network is transported hot water to spray water pipe by connecting water pipe;Rain cloth folding and unfolding component includes two groups of reel mechanism for folding and unfolding waterproof rain cloth arranged in the upper of tank body, driving motor is arranged in the upper of top canopy support, for driving two groups of reel mechanism synchronous folding and unfolding two waterproof rain cloth, and when two groups of waterproof rain cloth are put down, it can be isolated between the outer wall of the left and right sides of tank body and two spray water pipes Covering. By adding the waterproof rain cloth that can be folded and unfolded between hot water spraying and tank body outer wall as isolation measure, hot water is avoided to cause corrosion to tank body, simultaneously still can utilize hot water to preheat liquid chlorine tank truck, make a small amount of liquid chlorine in tank vaporization, give tank pressure boost and then realize the unpowered liquid discharge of liquid chlorine tank truck.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquid chlorine tank trucks, specifically relating to a preheating and draining device for liquid chlorine tank trucks. Background Technology

[0002] Chlorinated paraffin is a chlorinated derivative of paraffin hydrocarbons, possessing advantages such as low volatility, flame retardancy, and electrical insulation. It can be used as a flame retardant, cable material, flooring material, hose, artificial leather, and auxiliary plasticizer for polyvinyl chloride (PVC). The production process of chlorinated paraffin mainly involves adding liquid paraffin to a reaction vessel and then introducing chlorine gas to carry out a chlorination reaction. Chlorine gas, as the main raw material for chlorinated paraffin preparation, is usually derived from the vaporization of liquid chlorine. Liquid chlorine is typically stored and transported using liquid chlorine tank trucks. After arriving at the site, the liquid chlorine needs to be transported through a liquid chlorine delivery pipeline to a vaporizer for vaporization. The vaporized chlorine gas then serves as the reaction raw material for chlorinated paraffin. The process of transporting liquid chlorine from the tank truck to the vaporizer can be done using a non-powered conveying method. This involves preheating the tank, causing a small amount of liquid chlorine near the inner wall of the tank to begin vaporization, increasing the pressure inside the tank, and allowing the liquid chlorine to flow automatically from the tank truck to the vaporizer. Currently, tank preheating utilizes hot water generated during the chlorination of paraffin (the chlorination reaction between paraffin and chlorine releases a large amount of heat, requiring circulating cooling water to cool the reaction vessel, which in turn generates a large amount of hot water). This hot water is directly sprayed onto the outer wall of the tank, and the heat is then conducted to the inner wall, causing the liquid chlorine to vaporize. However, prolonged spraying of the hot water generated during production onto the tank surface can cause corrosion to the outer wall. Since liquid chlorine is a highly toxic and hazardous material, a leak due to tank corrosion would have incalculable and serious consequences. Therefore, there is an urgent need to find a new preheating method that can ensure unpowered drainage of liquid chlorine from tank trucks, avoid tank corrosion, and achieve rapid preheating even in low winter temperatures. Utility Model Content

[0003] In response to the above situation, this utility model provides a preheating and draining device for liquid chlorine tank trucks. Without increasing the energy consumption cost of other heat sources, it can ensure the non-powered draining of liquid chlorine tank trucks and avoid corrosion of the tank body by hot water.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A liquid chlorine tanker preheating and discharge device includes a liquid chlorine tanker consisting of a tank and a vehicle body, and a spray preheating system for heating the tank. The spray preheating system includes a hot water spray assembly for spraying hot water onto the tank and a tarpaulin retraction assembly for covering the tank with a waterproof tarpaulin. The hot water spray assembly includes a canopy support suspended above the liquid chlorine tanker and a hot water pipe network laid above the canopy support. Two spray pipes extending in a front-to-back direction are respectively installed on the left and right sides above the tank. Each of the two spray pipes has several spray nozzles on its lower sidewall. The hot water network supplies hot water to the spray pipes through connecting pipes. The tarpaulin retraction assembly includes two sets of roller mechanisms arranged side by side above the tank for retracting the two waterproof tarpaulins. A drive motor is provided above the canopy support to drive the two sets of roller mechanisms to simultaneously retract the two waterproof tarpaulins. When the two sets of waterproof tarpaulins are lowered, they can isolate the left and right outer walls of the tank from the two spray pipes.

[0006] Furthermore, the roller mechanism includes a roller housing extending in the front-to-back direction and a rotating roller. The roller housing is fixedly connected to the lower part of the canopy support, and the rotating roller is rotatably disposed inside the roller housing. The upper ends of the two waterproof tarpaulins are correspondingly connected to the outer side walls of the two rotating rollers. The bottom of the roller housing has an opening for the waterproof tarpaulins to be put in and taken out.

[0007] Furthermore, each of the two waterproof tarpaulins has a water collection trough suspended at its lower end. The water collection trough is made of an arc-shaped water pipe with the upper half of the side wall cut off, which extends in the front-back direction and is used to collect the spray water flowing down with the waterproof tarpaulin. One end of the water collection trough is connected to a return water pipe.

[0008] Furthermore, the front and rear ends of the two rotating spools are rotatably extended through the two ends of the spool housing via bearings, and each of the two rotating spools is equipped with a driven wheel at one end. A driving wheel is installed on the output shaft of the drive motor. The driving wheel is connected to the driven wheel of the two rotating spools via a transmission belt. The transmission belt is preferably a synchronous belt, and the corresponding driving wheel and the two driven wheels are all synchronous pulleys, which facilitates the synchronous rotation of the two rotating spools.

[0009] Furthermore, a switch valve for controlling the on / off state of hot water is installed on the connecting water pipe, and the switch valve is preferably an electric regulating valve.

[0010] Furthermore, an electrical control box is installed below the canopy support, and the drive motor and the switch valve are electrically connected to the electrical control box to realize the control of the opening and closing of the waterproof tarpaulin and the on / off control of the hot water spray.

[0011] This utility model also includes other components that enable its normal use, all of which are conventional means in the field. In addition, devices or components not limited in this utility model, such as liquid chlorine tank trucks, roof supports, hot water pipe networks, waterproof tarpaulins and roller mechanisms, all adopt existing technologies in the field.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model provides a preheating and draining device for liquid chlorine tank trucks. By adding a retractable waterproof tarpaulin between the hot water spray and the outer wall of the tank as an isolation measure, the existing direct hot water spray is changed to indirect conduction heating. The hot water generated during the chlorination paraffin production process is still used to preheat the liquid chlorine tank truck. Without increasing the energy consumption cost of other heat sources, it ensures the non-powered draining of liquid chlorine tank trucks while avoiding corrosion of the tank body by hot water, thus reducing the safety hazards of liquid chlorine tank truck leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the preheating and draining device for the liquid chlorine tanker in the embodiment.

[0015] Figure 2 for Figure 1 A side view of the preheating and draining device for liquid chlorine tank trucks. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0017] It should be noted that the terms "up," "down," "front," "back," "left," "right," "inner," and "outer," which indicate directions or positional relationships, are based on the attached drawings and are used only for ease of description.

[0018] Example

[0019] like Figure 1-2 As shown, a liquid chlorine tanker preheating and draining device includes a liquid chlorine tanker consisting of a tank body 1 and a vehicle body 2, and a spray preheating system for heating the tank body. The liquid chlorine tanker is prior art, and its specific configuration will not be described in detail here.

[0020] The spray preheating system mainly consists of two parts: a hot water spray assembly for spraying hot water onto the tank, and a tarpaulin retraction assembly for covering the tank with a waterproof tarpaulin 3.

[0021] The hot water spray assembly includes a canopy support 4 suspended above the liquid chlorine tanker, and a hot water pipe network 5 laid above the canopy support. Two spray pipes 6 extending in a front-to-back direction are respectively installed on the left and right sides above the tank. Each of the two spray pipes has several spray nozzles 7 on its lower sidewall. The hot water pipe network supplies hot water to the spray pipes through connecting pipes 8. Each of the two connecting pipes is fixedly connected to the lower part of the canopy support by a connecting bracket 9. A switch valve 10 is installed on each connecting pipe. The switch valve is an electrically adjustable valve for easy electric control of the hot water flow. All of the above-described hot water spray assemblies can utilize existing hot water spray systems.

[0022] The tarpaulin deployment and retraction assembly includes two sets of roller mechanisms arranged side by side above the tank for deploying and retracting two waterproof tarpaulins. A drive motor 11 is provided above the canopy support for driving the two sets of roller mechanisms to simultaneously deploy and retract the two waterproof tarpaulins. When the two sets of waterproof tarpaulins are lowered, they can isolate the area between the outer walls of the left and right sides of the tank and the two spray pipes.

[0023] The roller mechanism includes a roller housing 12 extending in the front-to-back direction and a rotating roller 13. The roller housing is fixedly connected to the lower part of the canopy support. The rotating roller is rotatably disposed inside the roller housing. The upper ends of the two waterproof tarpaulins are correspondingly connected to the outer side walls of the two rotating rollers. The bottom of the roller housing has an opening 14 for the waterproof tarpaulins to be loaded and unloaded. A position switch 15 can be installed at the opening of the roller housing.

[0024] Each of the two waterproof tarpaulins has a water collection trough 16 suspended at its lower end. The water collection trough is made of an arc-shaped water pipe with the upper half of the side wall cut off, extending in the front-back direction, and is used to collect the spray water flowing down with the waterproof tarpaulin. One end of the water collection trough is connected to a return water pipe 17. When the rotating roller is winding up, the water collection trough can act as a limiting device. When the water collection trough at the lower end of the waterproof tarpaulin is engaged with the opening of the roller housing and the positioning switch is triggered, the rotating roller can stop winding up. When the rotating roller is unwinding, the water collection trough can also act as a counterweight device when the waterproof tarpaulin is lowered, so that the waterproof tarpaulin can automatically slide down the left and right side walls of the tank under the action of gravity when the rotating roller is unwinding.

[0025] The front and rear ends of the two rotating rollers are rotatably extended through the two roller housings via bearings. Each of the two rotating rollers has a driven wheel 18 installed at one end. A driving wheel 19 is installed on the output shaft of the drive motor. The driving wheel is connected to the driven wheel of the two rotating rollers via a transmission belt 20. The transmission belt is a synchronous belt. The corresponding driving wheel and the two driven wheels are all synchronous pulleys. The driving wheel and the two driven wheels are arranged in a triangle via the synchronous belt, and are connected in a one-to-two transmission to realize the synchronous rotation of the two rotating rollers. The two waterproof tarpaulins are wound in the same direction on the two rotating rollers, thereby realizing the synchronous opening and closing of the two waterproof tarpaulins.

[0026] An electrical control box (not shown in the figure) is installed below the canopy support. The drive motor and the switch valve are electrically connected to the electrical control box to control the raising and lowering of the waterproof tarpaulin and the switching on and off of the hot water spray. The electrical control box and its internal circuitry are existing technologies, and their specific details will not be described in detail here.

[0027] The working principle of this utility model is as follows:

[0028] When no liquid chlorine tanker is parked under the canopy support, the quick-connect return water pipe can be disconnected from the device, and the two waterproof tarpaulins can be wound up into their respective housings via rotating rollers. When chlorine is needed for chlorinated paraffin production, after the liquid chlorine tanker is parked at the designated position under the canopy support, the conveying pipe between the liquid chlorine tanker and the vaporizer is connected. Then, the two rotating rollers can be controlled to lower the two waterproof tarpaulins to cover the left and right side walls of the tank. The return water pipe is connected via a quick-connect, and then the hot water spray is turned on, so that the hot water is sprayed onto the waterproof tarpaulins and flows into the lower water collection tank, and then discharged through the return water pipe. Through the isolation and protection of the waterproof tarpaulins, direct contact between the hot water and the tank is avoided, reducing the corrosion of the tank by the hot water. At the same time, the heat of the hot water has also been indirectly conducted to the liquid chlorine medium on the inner wall of the tank, causing a small amount of liquid chlorine in the tank to vaporize, increasing the pressure inside the tank, and causing the liquid chlorine in the tank to flow to the vaporizer through the conveying pipe. Without the assistance of a power pump, the liquid chlorine tanker can be discharged without power.

[0029] The technical solution of this utility model is not limited to the specific embodiments described above. Without departing from the scope and spirit of the described embodiments, many modifications and changes will be obvious to those skilled in the art. Any technical modifications made within the spirit and principles of this utility model shall fall within the protection scope of this utility model.

Claims

1. A liquid chlorine tank car preheating liquid discharge device, comprising a liquid chlorine tank car composed of a tank body and a car body, and a spray preheating system for heating the tank body, characterized in that: The spray preheating system includes a hot water spray assembly for spraying hot water onto the tank body, and a tarpaulin retraction assembly for covering the tank body with waterproof tarpaulins. The hot water spray assembly includes a canopy support suspended above the liquid chlorine tanker, and a hot water pipe network laid above the canopy support. Two spray pipes extending in the front-to-back direction are respectively arranged on the left and right sides above the tank body. The lower sidewalls of the two spray pipes each have several spray nozzles. The hot water pipe network supplies hot water to the spray pipes through connecting pipes. The tarpaulin retraction assembly includes two sets of roller mechanisms arranged side by side above the tank body for correspondingly retracting two waterproof tarpaulins. A drive motor is arranged above the canopy support to drive the two sets of roller mechanisms to synchronously retract the two waterproof tarpaulins. When the two sets of waterproof tarpaulins are lowered, they can isolate the outer walls of the left and right sides of the tank body from the two spray pipes.

2. The liquid chlorine tank car pre-bleed apparatus of claim 1, wherein: The roller mechanism includes a roller housing extending in the front-to-back direction and a rotating roller. The roller housing is fixedly connected to the lower part of the canopy support. The rotating roller is rotatably disposed inside the roller housing. The upper ends of the two waterproof tarpaulins are correspondingly connected to the outer side walls of the two rotating rollers. The bottom of the roller housing has an opening for the waterproof tarpaulins to be put in and taken out.

3. The liquid chlorine tank car pre-bleed apparatus of claim 2, wherein: Each of the two waterproof tarpaulins has a water collection trough suspended at its lower end. The water collection trough is made of an arc-shaped water pipe with the upper half of the side wall cut off, which extends in the front-back direction and is used to collect the spray water that flows down with the waterproof tarpaulin. One end of the water collection trough is connected to a return water pipe.

4. A liquid chlorine tanker preheating and draining device according to claim 2, characterized in that: The front and rear ends of the two rotating spools are rotatably extended through the two ends of the spool housing via bearings, and each of the two rotating spools has a driven wheel installed at one end. The output shaft of the drive motor has a driving wheel installed on it, and the driving wheel is connected to the driven wheel of the two rotating spools via a transmission belt.

5. A liquid chlorine tanker preheating and draining device according to claim 1, characterized in that: The connecting water pipe is equipped with a switch valve for controlling the on / off of hot water.

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