Automatic exhaust device for internal circulation pipeline of closed cooling tower

Abstract

The utility model discloses an automatic exhaust device for an internal circulation pipeline of a closed cooling tower, belongs to the technical field of mine closed cooling towers, and solves the problems that an internal circulation pipeline of an existing closed cooling tower is low in exhaust efficiency and poor in accuracy, and normal work of the closed cooling tower is affected. The closed cooling tower internal circulation pipeline is provided with a water storage tank; the upper end of the water storage tank is connected with a pipeline; the pipeline is provided with an electric valve; the upper end of the pipeline is connected with a fine oil separator; and the pressure gauge and the electric valve are connected with a PLC (Programmable Logic Controller). The device is stable in operation, the operation efficiency of closed cooling tower equipment is effectively improved, the labor intensity of workers is reduced, the safety of the workers is protected, and the device has very high popularization value.

Description

Technical Field

[0001] This utility model belongs to the technical field of closed cooling towers in mining, specifically relating to an automatic exhaust device for the internal circulation pipeline of a closed cooling tower. Background Technology

[0002] Closed-circuit cooling towers achieve cooling through heat exchange between sprayed water and circulating water. The cooled circulating water then cools the compressed air from the air compressor to meet the air supply requirements of underground mines. Since the replenishment water in the internal circulation pipes of closed-circuit cooling towers mostly comes from tap water, a small amount of air inevitably gets mixed in. When this air accumulates to a certain pressure value, it will affect the circulating water volume in the cooling tower's internal circulation pipes, causing the internal circulating water to fail to reach the cooling temperature. This results in an increase in the temperature of the compressed air from the air compressor, and in severe cases, it can cause the air compressor to trip due to high temperature, affecting the normal air supply in underground mines.

[0003] Currently, the traditional method of venting air from the internal circulation pipeline of cooling towers still relies on manual venting. This involves installing a manual ball valve on the internal circulation pipeline, and personnel determine whether venting is necessary by observing the pressure reading on the internal circulation pipeline pressure gauge. This method is inefficient and inaccurate, easily causing the air compressor to overheat and trip, affecting the normal air supply in the mine. Furthermore, it involves high manual labor intensity, and the venting position is usually high (where air density is low), posing significant safety hazards to workers. Utility Model Content

[0004] This invention provides an automatic exhaust device for the internal circulation pipeline of a closed cooling tower, which solves the problems of low exhaust efficiency and poor accuracy of existing closed cooling tower internal circulation pipelines, thus affecting the normal operation of the closed cooling tower.

[0005] The technical solution of this utility model is: an automatic exhaust device for the internal circulation pipeline of a closed cooling tower, including an internal circulation pipeline of the closed cooling tower, a water storage tank provided on the internal circulation pipeline, a pipe connected to the upper end of the water storage tank, an electric valve installed on the pipe, an oil separator connected to the upper end of the pipe, an exhaust shell enclosed on the outside of the oil separator, an exhaust pipe installed at the upper end of the exhaust shell, a pressure gauge provided on the exhaust pipe, and the pressure gauge and the electric valve connected to a PLC controller.

[0006] As a further improvement of this utility model, an exhaust valve is provided on the exhaust pipe, and a drain pipe is connected to the lower end of the oil separator. A drain valve is provided on the drain pipe, and the drain valve and the exhaust valve are connected to the PLC controller.

[0007] As a further improvement of this utility model, a sealing gasket is provided between the oil separator and the exhaust shell to ensure that no internal circulating water enters the exhaust shell.

[0008] As a further improvement of this utility model, the top of the exhaust shell is provided with an end cap, which is connected to the exhaust shell by screws. The end cap ensures tight contact between the oil separator and the sealing gasket, ensuring that the cylindrical container of the exhaust section is effectively sealed without leakage, and at the same time, it facilitates the replacement of the oil separator.

[0009] As a further improvement of this utility model, the electric valve is an electric butterfly valve.

[0010] As a further improvement of this utility model, a baffle is provided inside the water storage tank.

[0011] The beneficial effects of this invention are as follows: This invention connects to a PLC controller via a pressure gauge and an electric valve. The PLC controller automatically controls the flow of gas from the pipeline into the exhaust casing through the electric valve, and the pressure gauge controls the automatic exhaust of gas from the closed-loop cooling tower's internal circulation system. Furthermore, the connection between the exhaust valve and the PLC controller enables precise and efficient gas exhaust from the closed-loop cooling tower's internal circulation system, eliminating the large errors, low efficiency, and safety risks associated with traditional manual exhaust, and preventing excessive pressure from affecting the normal operation of the closed-loop cooling tower. This invention also employs an oil-fine separator to separate water and gas. This device effectively separates the internal circulating water from the gas to be exhausted, preventing excessive internal circulating water from being discharged during the exhaust process, which would affect the cooling tower's heat exchange efficiency. This invention operates stably, effectively improving the operating efficiency of the closed-loop cooling tower equipment, reducing the labor intensity of employees, and protecting the safety of workers, making it highly valuable for widespread application. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a front view structural diagram of the present invention.

[0014] In the diagram: 1-Water storage tank; 2-Pipeline; 3-Electric valve; 4-Closed cooling tower internal circulation pipeline; 5-Drain pipe; 6-Drain valve; 7-Exhaust shell; 8-Oil separator; 9-Sealing gasket; 10-Exhaust pipe; 11-Exhaust valve; 12-End cap; 13-Pressure gauge. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-2 As shown, an automatic exhaust device for the internal circulation pipeline of a closed cooling tower includes an internal circulation pipeline 4 of the closed cooling tower.

[0017] An automatic exhaust device for the internal circulation pipeline of a closed cooling tower is provided. The internal circulation pipeline 4 of the closed cooling tower is provided with a water storage tank 1. The upper end of the water storage tank 1 is connected to a pipe 2. An electric valve 3 is installed on the pipe 2. The upper end of the pipe 2 is connected to an oil separator 8. An exhaust shell 7 is enclosed on the outside of the oil separator 8. An exhaust pipe 10 is installed on the upper end of the exhaust shell 7. A pressure gauge 13 is installed on the exhaust pipe 10. The pressure gauge 13 and the electric valve 3 are connected to a PLC controller.

[0018] An exhaust valve 11 is provided on the exhaust pipe 10, and a drain pipe 5 is connected to the lower end of the oil separator 8. A drain valve 6 is provided on the drain pipe 5, and the drain valve 6 and the exhaust valve 11 are connected to the PLC controller.

[0019] A sealing gasket 9 is provided between the oil separator 8 and the exhaust shell 7 to ensure that no internal circulating water enters the exhaust shell.

[0020] The top of the exhaust housing 7 is provided with an end cap 12, which is connected to the exhaust housing 7 by screws. The end cap 12 ensures that the oil separator 8 and the sealing gasket 9 are in close contact, ensuring that the exhaust housing 7 is effectively sealed and leak-free, while also facilitating the replacement of the oil separator 8.

[0021] Electric valve 3 is an electric butterfly valve.

[0022] The water storage tank 1 is equipped with a baffle.

[0023] During operation, electric valve 3 is normally open, and water and air in water tank 1 continuously flow into oil separator 8. The baffle in water tank 1 can divert water from the circulating pipe 4 in the cooling tower. In oil separator 8, gas passes through oil separator 8 and enters exhaust shell 7. When pressure gauge 13 in exhaust pipe 10 reaches the critical pressure value of 0.3MPa, it sends a signal to PLC controller. PLC controller controls electric valve 3 to close and drain valve 6 and exhaust valve 11 to open. Drain valve 6 can discharge the remaining water in oil separator, and exhaust valve 11 can discharge air in exhaust shell. When pressure gauge 13 detects pressure down to 0MPa, PLC controller controls exhaust valve 11 and drain valve 6 to close and electric valve 3 to open, thus circulating and venting the closed cooling tower circulating pipe 4, achieving fully automatic gas discharge in the cooling tower circulating pipe.

Claims

1. An automatic exhaust device for a closed-loop cooling tower internal circulation pipeline, comprising a closed-loop cooling tower internal circulation pipeline (4), characterized in that: The closed cooling tower has a water storage tank (1) on the internal circulation pipeline (4). The upper end of the water storage tank (1) is connected to a pipe (2). An electric valve (3) is installed on the pipe (2). An oil separator (8) is connected to the upper end of the pipe (2). An exhaust shell (7) is enclosed on the outside of the oil separator (8). An exhaust pipe (10) is installed on the upper end of the exhaust shell (7). A pressure gauge (13) is installed on the exhaust pipe (10). The pressure gauge (13) and the electric valve (3) are connected to the PLC controller.

2. The automatic exhaust device for the internal circulation pipeline of a closed cooling tower according to claim 1, characterized in that: The exhaust pipe (10) is equipped with an exhaust valve (11), and the lower end of the oil separator (8) is connected to a drain pipe (5). The drain pipe (5) is equipped with a drain valve (6), and the drain valve (6) and the exhaust valve (11) are connected to the PLC controller.

3. An automatic exhaust device for the internal circulation pipeline of a closed cooling tower according to claim 1 or 2, characterized in that: A sealing gasket (9) is provided between the oil separator (8) and the exhaust shell (7).

4. The automatic exhaust device for the internal circulation pipeline of a closed cooling tower according to claim 3, characterized in that: The exhaust housing (7) is provided with an end cap (12) on the top, and the end cap (12) is connected to the exhaust housing (7) by screws.

5. The automatic exhaust device for the internal circulation pipeline of a closed cooling tower according to claim 1, characterized in that: The electric valve (3) is an electric butterfly valve.

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