Cooling system applied to gas-liquid two-phase fluid

Abstract

The utility model relates to the technical field of nitrogen vulcanization cyclic utilization cooling, and provides a cooling system applied to gas-liquid two-phase fluid, which comprises an air cooler connected with a nitrogen recovery pipeline, the shell-and-tube heat exchanger is connected with the air cooler in series, an air inlet of the shell-and-tube heat exchanger is connected with the shell-and-tube heat exchanger through a pipeline, and an air outlet of the shell-and-tube heat exchanger is connected with the supercharger through a pipeline; and the shaping nitrogen storage tank is connected to a pipeline between the air cooler and the shell-and-tube heat exchanger. According to the utility model, the air cooler and the shell-and-tube heat exchanger connected in series with the air cooler are arranged, so that the heat dissipation of the recovered nitrogen is greatly reduced, the shaped nitrogen with higher temperature is provided, and the steam consumed in the tire shaping process is further reduced. Meanwhile, the cooling capacity of air is fully utilized through graded cooling of the air cooler and the shell-and-tube heat exchanger, the design capacity of the shell-and-tube heat exchanger, the design capacity of the normal-temperature cooling water pump and the design capacity of the cooling tower are reduced, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a cooling system applied to gas-liquid two-phase fluids. Background Art

[0002] The main vulcanization process for all-steel and semi-steel tires is mostly nitrogen vulcanization. The main heat source of the nitrogen vulcanization process is steam, and auxiliary nitrogen provides pressure. In order to reduce the energy consumption of the factory, after the vulcanization process, it is necessary to recover this part of the nitrogen as much as possible, and a part of the nitrogen is pressurized to become high-pressure nitrogen, and the other part can be used directly as fixed nitrogen. This part of the pressurized nitrogen is usually equipped with a supercharger to achieve supercharging. In order to reduce the energy consumption of the supercharger, it is necessary to reduce the temperature of this part of the nitrogen as much as possible.

[0003] In the prior art, since the recovered nitrogen contains saturated wet steam and tiny rubber particles, the current design is usually to cool the recovered nitrogen to 35°C in a water-cooled shell and tube heat exchanger after passing through a steam-water separation device, and then divide it into the above two parts for use. This process requires a large amount of cooling water, which increases the design capacity of the normal temperature cooling water pump and cooling tower. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model provides a cooling system for gas-liquid two-phase fluid, which includes:

[0005] Air cooler connected to the nitrogen recovery pipeline;

[0006] A shell and tube heat exchanger connected in series with the air cooler, wherein the air inlet of the shell and tube heat exchanger is connected to the air cooler through a pipeline, and the air outlet is connected to the supercharger through a pipeline;

[0007] A shaped nitrogen storage tank connected to the pipeline between the air cooler and the shell and tube heat exchanger.

[0008] In a preferred solution, a condensate discharge device is further provided on the pipeline between the air cooler and the shell and tube heat exchanger, and the condensate discharge device includes a steam trap and a control valve.

[0009] In a preferred solution, the air cooler is equipped with a variable frequency fan.

[0010] Furthermore, a temperature sensor electrically connected to the variable frequency fan is provided on the pipeline between the air cooler and the shell and tube heat exchanger.

[0011] In a preferred solution, the shell and tube heat exchanger is provided with a cooling water inlet pipeline, and a pneumatic regulating valve is provided on the cooling water inlet pipeline.

[0012] The beneficial effects achieved by the utility model are:

[0013] The utility model greatly reduces the heat dissipation of recovered nitrogen by providing an air cooler and a shell and tube heat exchanger connected in series with the air cooler, and provides high-temperature shaping nitrogen, thereby reducing the steam consumed in the tire shaping process. At the same time, the graded cooling of the air cooler and the shell and tube heat exchanger fully utilizes the cooling capacity of the air, reduces the design capacity of the shell and tube heat exchanger, the normal temperature cooling water pump and the cooling tower, and reduces the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Numbers in the figure:

[0016] 1. Air cooler; 2. Steam trap; 3. Temperature sensor; 4. Shell and tube heat exchanger; 5. Pneumatic control valve; 6. Variable frequency fan. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the utility model is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0018] Reference Figure 1 The utility model provides a cooling system for gas-liquid two-phase fluid, which includes an air cooler 1 connected to a nitrogen recovery pipeline, and a shell and tube heat exchanger 4 connected in series with the air cooler 1, wherein the air inlet of the shell and tube heat exchanger 4 is connected to the air cooler 1 through a pipeline, and the air outlet of the shell and tube heat exchanger 4 is connected to the supercharger through a pipeline; and also includes a shaped nitrogen gas storage tank connected to the pipeline between the air cooler 1 and the shell and tube heat exchanger 4.

[0019] A condensate discharge device is also provided on the pipeline between the air cooler 1 and the shell and tube heat exchanger 4 , and the condensate discharge device includes a steam trap 2 and a control valve.

[0020] The air cooler 1 is equipped with a variable frequency fan 6. A temperature sensor 3 electrically connected to the variable frequency fan 6 is provided on the pipeline between the air cooler 1 and the shell and tube heat exchanger 4. According to the temperature detected by the temperature sensor 3, the air volume of the variable frequency fan 6 can be controlled, thereby controlling the outlet temperature of the nitrogen recovered by the air cooler 1.

[0021] The shell and tube heat exchanger 4 is provided with a cooling water inlet pipeline, and a pneumatic regulating valve 5 is provided on the cooling water inlet pipeline to adjust the inlet amount of cooling water.

[0022] The recovered nitrogen first enters the air cooler 1 through the pipeline, and the temperature is reduced from 95°C to 50°C, and the condensed water is discharged through the steam trap 2. Most of the cooled recovered nitrogen enters the fixed nitrogen gas storage tank and is used as fixed nitrogen.

[0023] Another part of the nitrogen is cooled to 35°C through the shell and tube heat exchanger 4 and enters the booster.

[0024] The air cooler 1 is equipped with a variable frequency fan 6 to control the outlet temperature of the recovered nitrogen. The cooling water of the shell and tube heat exchanger 4 is equipped with a pneumatic regulating valve 5 to control the outlet temperature of the recovered nitrogen.

[0025] In addition, the air cooler 1 and the shell and tube heat exchanger 4 can be customized according to the flow rate of the recovered nitrogen. The air staged cooling capacity of the air cooler 1 and the shell and tube heat exchanger 4 can be used to reduce the design capacity of the shell and tube heat exchanger 4, the normal temperature cooling water pump and the cooling tower, thereby reducing the operation and maintenance costs.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling system for gas-liquid two-phase fluid, characterized in that: It includes: An air cooler (1) connected to a nitrogen recovery pipeline; A shell and tube heat exchanger (4) connected in series with the air cooler (1), wherein the air inlet of the shell and tube heat exchanger (4) is connected to the air cooler (1) via a pipeline, and the air outlet is connected to the supercharger via a pipeline; A shaped nitrogen gas storage tank is connected to the pipeline between the air cooler (1) and the shell and tube heat exchanger (4).

2. The cooling system for gas-liquid two-phase fluid according to claim 1, characterized in that: A condensate discharge device is also provided on the pipeline between the air cooler (1) and the shell and tube heat exchanger (4), and the condensate discharge device comprises a steam trap (2) and a control valve.

3. The cooling system for gas-liquid two-phase fluid according to claim 1, characterized in that: The air cooler (1) is equipped with a variable frequency fan (6).

4. The cooling system for gas-liquid two-phase fluid according to claim 3, characterized in that: A temperature sensor (3) electrically connected to the variable frequency fan (6) is provided on the pipeline between the air cooler (1) and the shell and tube heat exchanger (4).

5. The cooling system for gas-liquid two-phase fluid according to claim 1, characterized in that: The shell and tube heat exchanger (4) is provided with a cooling water inlet pipeline, and a pneumatic regulating valve (5) is provided on the cooling water inlet pipeline.

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