Cooling system of thermal equipment

Abstract

The utility model belongs to a thermal equipment cooling system in the technical field of circulating water cooling. The first circulating water pool (1) is communicated with a heat exchange pipeline inlet of the heat exchanger (2), a heat exchange pipeline outlet of the heat exchanger (2) is communicated with a cooling pipeline inlet of the thermal equipment (3), a cooling pipeline outlet of the thermal equipment (3) is communicated with the first circulating water pool (1), and a water outlet of the second circulating water pool (4) is communicated with a heat exchange cavity inlet of the heat exchanger (2). A heat exchange cavity outlet of the heat exchanger (2) is communicated with a water inlet of the cooling tower (5), and a water outlet of the cooling tower (5) is communicated with the second circulating water pool (4). According to the thermal equipment cooling system, the thermal equipment is cooled, the problem of rapid attenuation of the heat transfer performance of the system is solved, and the heat transfer performance of the system is kept durable and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of circulating water cooling, and more specifically, relates to a cooling system for thermal equipment. Background Art

[0002] To meet the cooling requirements of thermal equipment, a closed-circuit circulating water system is often used. A closed cooling tower (hereinafter referred to as a closed tower) plays a crucial role in the closed-circuit circulating water system. However, during the use of the closed tower, scale forms on the inner and outer walls (especially the outer wall) of the internal coil, resulting in a rapid decline in the heat transfer performance of the system and making it difficult to meet the requirements of the production process. In addition, there are also disadvantages such as difficult maintenance in the closed cooling tower. Specifically, in the common heat transfer process of the closed-circuit circulating water system, the closed tower is a key device. In its heat transfer process, the circulating water in the coil transfers heat to the spray water and air outside the pipe through the pipe wall. While the spray water outside the pipe evaporates and takes away heat, scale will be left on the outer wall of the pipe. In addition, solid substances such as dust in the flowing air and organic substances in the spray water will also remain on the outer wall of the coil, mix with the scale, and form a hard covering layer on the outer surface of the coil, greatly reducing the heat transfer performance of the coil and causing the heat transfer performance of the entire system to decay rapidly.

[0003] There is a prior art with the name "Intermediate Cooling Closed-Circuit Cooling Water System for Calcium Carbide Furnace" and a publication (announcement) number of "CN103864074 B". This technology includes a water supply mechanism, a distributor, a cooling mechanism, a water collector, a degassing tank, a pressure stabilizing tank, a heat exchanger, a water replenishing mechanism, and a chemical dosing device. The water supply mechanism includes a circulating pump group and an inlet circulating cut-off valve and an outlet circulating cut-off valve respectively configured. The cooling mechanism includes a cooler for the cooling element of the calcium carbide furnace and a cooling cut-off valve respectively configured at its inlet and outlet. The inlet cooling cut-off valve is communicated with the outlet of the distributor, and the outlet cooling cut-off valve is communicated with the water collector. The outlet provided in the water collector is communicated with the degassing tank. The pressure stabilizing tank is connected to the degassing tank. The heat exchanger is respectively communicated with the degassing tank and the pressure stabilizing tank. The water replenishing mechanism includes a water tank, a water replenishing pump group, and cut-off valves for both in and out directions of the water replenishing pump group. The water replenishing mechanism is communicated with the water supply mechanism through a pipeline. The chemical dosing device is installed between the heat exchanger and the water supply mechanism and is communicated with it through a delivery pipe. This system has the good effects of small makeup water volume, high heat transfer efficiency, good cooling effect, low corrosion rate, good degassing and exhaust effects, and safety, energy conservation, and environmental protection.

[0004] However, this technology does not involve the technical problems and technical solutions of this application. Summary of the Utility Model

[0005] The technical problem to be solved by the present utility model is: in view of the deficiencies of the prior art, to provide a thermal equipment cooling system with a simple structure, which can effectively achieve the cooling of thermal equipment, solve the problem of rapid attenuation of the heat transfer performance of the system, and enable the system to maintain a lasting and stable heat transfer performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present utility model is as follows:

[0007] The present utility model is a thermal equipment cooling system. The first circulating water tank is connected to the inlet of the heat exchange pipeline of the heat exchanger. The outlet of the heat exchange pipeline of the heat exchanger is connected to the inlet of the cooling pipeline of the thermal equipment. The outlet of the cooling pipeline of the thermal equipment is connected to the first circulating water tank. The water outlet of the second circulating water tank is connected to the inlet of the heat exchange cavity of the heat exchanger. The outlet of the heat exchange cavity of the heat exchanger is connected to the water inlet of the cooling tower. The water outlet of the cooling tower is connected to the second circulating water tank.

[0008] The first circulating water tank is connected to the inlet of the heat exchange pipeline inside the heat exchanger through a first conveying pipeline. The outlet of the heat exchange pipeline inside the heat exchanger is connected to the inlet of the cooling pipeline of the thermal equipment through a second conveying pipeline. The outlet of the cooling pipeline of the thermal equipment is connected to the first circulating water tank through a third conveying pipeline.

[0009] The water outlet of the second circulating water tank is connected to the inlet of the heat exchange cavity of the heat exchanger through a fourth conveying pipeline. The outlet of the heat exchange cavity of the heat exchanger is connected to the water inlet of the cooling tower through a fifth conveying pipeline. The water outlet of the cooling tower is connected to the second circulating water tank through a sixth conveying pipeline.

[0010] A first water pump is arranged on the first conveying pipeline.

[0011] A second water pump is arranged on the fourth conveying pipeline.

[0012] The cooling tower is an open cooling tower.

[0013] The heat exchanger is a shell-and-tube heat exchanger (such as a plate heat exchanger, a shell-and-tube heat exchanger).

[0014] Adopting the technical solution of the present utility model, the working principle and beneficial effects are as follows:

[0015] The cooling system of the thermal equipment described in the present utility model, when structurally arranged, adopts a structure that combines a heat exchanger and an open cooling tower. The first circulating water tank stores hot water. The inlet of the heat exchange pipeline of the heat exchanger is connected to the first circulating water tank. The outlet of the heat exchange pipeline of the heat exchanger is connected to the inlet of the cooling pipeline of the thermal equipment. The outlet of the second circulating water tank is connected to the inlet of the heat exchange cavity of the heat exchanger. The second circulating water tank stores cold water. The cold water supplied by the second circulating water tank enters the heat exchanger and counter-currently exchanges heat with the hot water in the heat exchange pipeline supplied by the first circulating water tank. The hot water in the heat exchange pipeline becomes cold water and enters the cooling pipeline of the thermal equipment to cool the thermal equipment. The hot water flowing out from the outlet of the cooling pipeline of the thermal equipment is connected to the first circulating water tank through the third conveying pipeline to complete the water cycle. The outlet of the heat exchange cavity of the heat exchanger is connected to the inlet of the cooling tower. The outlet of the cooling tower is connected to the second circulating water tank. The hot water flowing out from the outlet of the heat exchange cavity of the heat exchanger enters the cooling tower for cooling and becomes cold water, which enters the second circulating water tank to realize the recycling of water. In the above structure, the plate heat exchanger has the advantages of small volume, not easy to scale, high heat transfer efficiency, its performance is not interfered by the outside, and it is convenient for equipment cleaning and maintenance. As an important equipment of the cooling system of the thermal equipment of the present utility model, the media on the hot side (heat exchange pipeline) and the cold side (heat exchange cavity) of the heat exchanger are both selected as circulating water. The cooling tower is an open cooling tower, which belongs to a direct contact heat transfer device, and its heat transfer performance and environmental tolerance are better than those of a closed cooling tower; the plate heat exchanger is a wall-type heat exchanger, and there is no water evaporation during the heat exchange process, which greatly slows down the scaling of the heat exchange surface. Brief Description of the Drawings

[0016] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:

[0017] Figure 1 It is a schematic structural diagram of the cooling system of the thermal equipment described in the present utility model;

[0018] The marks in the drawings are respectively: 1, the first circulating water tank; 2, the heat exchanger; 3, the thermal equipment; 4, the second circulating water tank; 5, the open cooling tower; 6, the first conveying pipeline; 7, the second conveying pipeline; 8, the third conveying pipeline; 9, the fourth conveying pipeline; 10, the fifth conveying pipeline; 11, the sixth conveying pipeline; 12, the first water pump; 13, the second water pump. Detailed Description of the Preferred Embodiment

[0019] The following further details the specific embodiments of the present utility model, such as the shapes, structures, mutual positions and connection relationships of the various components involved, the functions of each part and the working principles, etc., by describing the embodiments with reference to the drawings:

[0020] As shown in the attached Figure 1As shown in the figure, the utility model relates to a cooling system for thermal equipment. The first circulation water tank 1 is connected to the inlet of the heat exchange pipeline of the heat exchanger 2. The outlet of the heat exchange pipeline of the heat exchanger 2 is connected to the inlet of the cooling pipeline of the thermal equipment 3. The outlet of the cooling pipeline of the thermal equipment 3 is connected to the first circulation water tank 1. The water outlet of the second circulation water tank 4 is connected to the inlet of the heat exchange cavity of the heat exchanger 2. The outlet of the heat exchange cavity of the heat exchanger 2 is connected to the water inlet of the cooling tower 5. The cold water outlet of the cooling tower 5 is connected to the second circulation water tank 4. For the deficiencies in the prior art, the above structure proposes an improved technical solution. When setting the structure, a structure in which the heat exchanger 2 and the open cooling tower 5 are combined is adopted. The hot water is stored in the first circulation water tank 1. The first circulation water tank 1 is connected to the inlet of the heat exchange pipeline of the heat exchanger 2. The outlet of the heat exchange pipeline of the heat exchanger 2 is connected to the inlet of the cooling pipeline of the thermal equipment 3. The water outlet of the second circulation water tank 4 is connected to the inlet of the heat exchange cavity of the heat exchanger 2. The cold water is stored in the second circulation water tank 4. The cold water supplied by the second circulation water tank 4 enters the heat exchanger 2 and counter-currently exchanges heat with the hot water supplied to the heat exchange pipeline of the heat exchanger from the first circulation water tank 1. The hot water in the heat exchange pipeline becomes cold water and enters the cooling pipeline of the thermal equipment 3 to cool the thermal equipment 3. The hot water flows out from the outlet of the cooling pipeline of the thermal equipment 3 and is connected to the first circulation water tank 1 through the third conveying pipeline 8 to complete the water circulation. The outlet of the heat exchange cavity of the heat exchanger 2 is connected to the water inlet of the cooling tower 5. The water outlet of the cooling tower 5 is connected to the second circulation water tank 4. The hot water flowing out from the outlet of the heat exchange cavity of the heat exchanger 2 enters the cooling tower 5 for cooling and becomes cold water, which enters the second circulation water tank 4 to realize the recycling of water. For the above structure, the plate heat exchanger has the advantages of small volume, not easy to scale, high heat transfer efficiency, the performance is not interfered by the outside, and the equipment is convenient to clean and maintain. As an important equipment for the cooling system of the thermal equipment of the utility model, the media on the hot side (heat exchange pipeline) and the cold side (heat exchange cavity) of the heat exchanger 2 are both selected as circulating water. The cooling tower 5 is selected as an open cooling tower, which belongs to a direct contact heat transfer device, and its heat transfer performance and environmental tolerance are better than those of a closed cooling tower; the plate heat exchanger is a wall-type heat exchanger, and there is no water evaporation during the heat exchange process, which greatly slows down the scaling of the heat exchange surface. The cooling system for thermal equipment described in the utility model has a simple structure, effectively realizes the cooling of thermal equipment, solves the problem of rapid attenuation of the heat transfer performance of the closed circulating water cooling system, and enables the system to maintain a lasting and stable heat transfer performance.

[0021] The said first circulation water tank 1 is connected to the inlet of the heat exchange pipeline inside the heat exchanger 2 through the first conveying pipeline 6. The outlet of the heat exchange pipeline inside the heat exchanger 2 is connected to the inlet of the cooling pipeline of the thermal equipment 3 through the second conveying pipeline 7. The outlet of the cooling pipeline of the thermal equipment 3 is connected to the first circulation water tank 1 through the third conveying pipeline 8. For the above structure, the components of the system are connected through each pipeline to realize the water circulation between the first circulation water tank, the heat exchanger and the thermal equipment.

[0022] The water outlet of the second circulation pool 4 is connected to the inlet of the heat exchange cavity of the heat exchanger 2 through the fourth delivery pipeline 9. The outlet of the heat exchange cavity of the heat exchanger 2 is connected to the water inlet of the cooling tower 5 through the fifth delivery pipeline 10. The water outlet of the cooling tower 5 is connected to the second circulation pool 4 through the sixth delivery pipeline 11. With the above structure, the water circulation among the second circulation pool, the heat exchanger and the cooling tower is realized through the components of each pipeline connection system.

[0023] A first water pump 12 is arranged on the first delivery pipeline 6. With the above structure, the first water pump is connected to the control component and is used for pumping the water in the first circulation pool 1 to the heat exchange pipeline of the heat exchanger.

[0024] A second water pump 13 is arranged on the fourth delivery pipeline 9. With the above structure, the second water pump is connected to the control component and is used for pumping the water in the second circulation pool 4 to the heat exchange cavity of the heat exchanger.

[0025] The cooling tower 5 is an open cooling tower. With the above structure, the cooling tower 5 is a direct contact heat transfer device, and its heat transfer performance and environmental tolerance are better than those of a closed cooling tower. The heat exchanger 2 is a plate heat exchanger. With the above structure, the plate heat exchanger has the advantages of small volume, not easy to scale, high heat transfer efficiency, the performance is not easily interfered by the outside world, and it is convenient for equipment cleaning and maintenance.

[0026] For the cooling system of the thermal equipment described in the present utility model, when the structure is arranged, a structure combining a heat exchanger 2 and a cooling tower 5 is adopted. The hot water stored in the first circulation pool 1 is connected to the inlet of the heat exchange pipeline of the heat exchanger 2. The outlet of the heat exchange pipeline of the heat exchanger 2 is connected to the inlet of the cooling pipeline of the thermal equipment 3. The outlet of the second circulation pool 4 is connected to the inlet of the heat exchange cavity of the heat exchanger 2. The cold water stored in the second circulation pool 4 is supplied to the heat exchanger 2, and exchanges heat with the hot water supplied to the heat exchange pipeline of the heat exchanger from the first circulation pool 1. The hot water in the heat exchange pipeline becomes cold water and enters the cooling pipeline of the thermal equipment 3 to cool the thermal equipment 3. The hot water flowing out from the outlet of the cooling pipeline of the thermal equipment 3 is connected to the first circulation pool 1 through the third conveying pipeline 8 to complete the water circulation. The outlet of the heat exchange cavity of the heat exchanger 2 is connected to the water inlet of the cooling tower 5, and the outlet of the cooling tower 5 is connected to the second circulation pool 4. The hot water flowing out from the outlet of the heat exchange cavity of the heat exchanger 2 enters the cooling tower 5 for cooling and becomes cold water, which enters the second circulation pool 4 to realize the recycling of water. In the above structure, the plate heat exchanger is selected as an important device for the cooling system of the thermal equipment of the present utility model due to its advantages such as small volume, not easy to scale, high heat transfer efficiency, performance not easily affected by the outside, and convenient equipment cleaning and maintenance. The media on the hot side (heat exchange pipeline) and the cold side (heat exchange cavity) of the heat exchanger 2 are both selected as circulating water. The cooling tower 5 is a direct-contact heat transfer device, and its heat transfer performance and environmental tolerance are better than those of a closed cooling tower. The plate heat exchanger is a wall-type heat exchanger, and there is no water evaporation during the heat exchange process, which greatly slows down the scaling of the heat exchange surface. The present utility model effectively solves the problem of rapid attenuation of the heat transfer performance of the commonly used closed-circuit circulating water cooling system.

[0027] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A cooling system for thermal equipment, characterized in that: The first circulation water tank (1) is connected to the inlet of the heat exchange pipeline of the heat exchanger (2). The outlet of the heat exchange pipeline of the heat exchanger (2) is connected to the inlet of the cooling pipeline of the thermal equipment (3). The outlet of the cooling pipeline of the thermal equipment (3) is connected to the first circulation water tank (1). The water outlet of the second circulation water tank (4) is connected to the inlet of the heat exchange cavity of the heat exchanger (2). The outlet of the heat exchange cavity of the heat exchanger (2) is connected to the inlet of the cooling tower of the cooling tower (5). The outlet of the cooling tower of the cooling tower (5) is connected to the second circulation water tank (4).

2. The cooling system for thermal equipment according to claim 1, wherein: The first circulation water tank (1) mentioned above is connected to the inlet of the heat exchange pipeline inside the heat exchanger (2) through the first conveying pipeline (6). The outlet of the heat exchange pipeline inside the heat exchanger (2) is connected to the inlet of the cooling pipeline of the thermal equipment (3) through the second conveying pipeline (7). The outlet of the cooling pipeline of the thermal equipment (3) is connected to the first circulation water tank (1) through the third conveying pipeline (8).

3. The cooling system for thermal equipment according to claim 1 or 2, characterized in that: The water outlet of the second circulation water tank (4) mentioned above is connected to the inlet of the heat exchange cavity of the heat exchanger (2) through the fourth conveying pipeline (9). The outlet of the heat exchange cavity of the heat exchanger (2) is connected to the inlet of the cooling tower (5) through the fifth conveying pipeline (10). The outlet of the cooling tower (5) is connected to the second circulation water tank (4) through the sixth conveying pipeline (11).

4. The cooling system for thermal equipment according to claim 2, characterized in that: A first water pump (12) is provided on the first conveying pipeline (6).

5. The cooling system for thermal equipment according to claim 3, characterized in that: A second water pump (13) is provided on the fourth conveying pipeline (9).

6. The cooling system for thermal equipment according to claim 1 or 2, characterized in that: The cooling tower (5) is an open cooling tower.

7. The cooling system for thermal equipment according to claim 1 or 2, characterized in that: The heat exchanger (2) is a shell-and-tube heat exchanger.

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