An industrial equipment circulating cooling water supply system

Abstract

The utility model belongs to the industrial equipment circulating cooling water supply system of industrial equipment cooling technical field. First circulating water pool (4) and second circulating water pool (5) intercommunication new water pool (1), and new water pool (1) is connected with low temperature water equipment (9) through new water pipeline (21), and low temperature water equipment (9) is connected with second cooling tower (11), and second cooling tower (11) is connected with first circulating water pool (4) through first backwater pipeline (22), and second cooling tower (11) is connected with second circulating water pool (5) through second backwater pipeline (25). The industrial equipment circulating cooling water supply system, through the flow of the two-way water supply pipeline and the two-way backwater pipeline of low temperature water equipment, the utility model discloses the pollution of circulating water system is reduced as far as possible, realizes the stable, reliable, economic, environmental protection operation of whole circulating water system.

Description

Technical Field

[0001] This utility model belongs to the field of industrial equipment cooling technology, and more specifically, it relates to an industrial equipment circulating cooling water supply system. Background Technology

[0002] Industrial enterprises often have a large number of devices that require circulating water cooling. In systems using cooling towers to cool the circulating water, some water-using equipment (hereinafter referred to as "low-temperature water-using equipment") has a supply water temperature approaching its wet-bulb temperature. In such cases, if the ambient wet-bulb temperature is excessively high (e.g., exceeding the equipment's design value) or the cooling tower's cooling performance deteriorates, the system's supply water temperature may fail to meet the water requirements of the low-temperature water-using equipment, causing the equipment to malfunction or even become unusable. Production personnel are forced to maintain normal system operation by injecting large amounts of fresh water into the circulating water tank and simultaneously increasing the system's wastewater discharge (hereinafter referred to as the "increased wastewater discharge scheme"). This approach wastes water resources and circulating cooling water chemicals, leading to increased system operating costs and environmental pollution.

[0003] Specifically, the main technical problems in existing technologies are that the outlet water temperature of a cooling tower is related to the tower's cooling capacity, the operating environment, and the system's heat exchange capacity. When the ambient wet-bulb temperature is too high or the cooling tower's cooling performance deteriorates, resulting in a high outlet water temperature that cannot meet the needs of low-temperature water-using equipment, increasing the number of cooling towers cannot solve the problem (especially when the wet-bulb temperature is extremely high). While increasing the amount of wastewater discharged and replenishing with fresh water for a short period can indeed solve the problem without changing the system configuration, it often wastes a large amount of water resources and chemicals. According to the cooling principle of cooling towers, fresh water needs to be replenished during the operation of the circulating water system. The fresh water is added to the circulating water pool to maintain a constant liquid level in the pool. When using fresh water to supply water to low-temperature water-using equipment, the equipment's outlet water must have a suitable destination. Considering: (1) to achieve water conservation and emission reduction, this part of the water cannot be directly discharged; (2) the fresh water pool is used by the water station to store clean water, so this part of the water cannot return to the fresh water pool. This patent's approach of cooling the water before discharging it into the high-temperature circulating water pool is undoubtedly appropriate.

[0004] Existing technology includes a fully automatic water tank cooling system for various operating conditions, disclosed in publication (announcement) number "CN222634969U". This system comprises a vacuum water tank connected to the inlet pipeline of a cooling water pump. The inlet pipeline of the cooling water pump is connected to the inlet ends of both a low-temperature cooler and a high-temperature cooler. The outlet pipelines of both the low-temperature and high-temperature coolers are connected to the water supply pipeline on the tank side. A cooling water pump is installed on the inlet pipeline, and an electric ball valve is installed on the pump's inlet pipeline. A local pressure gauge and a remote pressure transmitter are installed on the pump's outlet pipeline. The inlets of the low-temperature and high-temperature coolers are connected to circulating cooling water pipelines. All electric valves and sensors are electrically connected to the control cabinet. The control system compares the real-time cooling water temperature with the system's set value, eliminating the need for manual valve operation and pump startup, thus achieving the function of regulating cooling water temperature and making it suitable for various operating conditions.

[0005] However, this technology does not address the technical issues and solutions of this application. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an industrial equipment circulating cooling water supply system that is simple in structure, can effectively guarantee the water supply temperature requirements of low-temperature water equipment, and does not require a large amount of circulating cooling water to be discharged, thus saving water resources and reducing environmental pollution, in order to address the shortcomings of the existing technology.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] This utility model is an industrial equipment circulating cooling water supply system. The first circulating water pool is connected to high-temperature water equipment, the second circulating water pool is connected to low-temperature water equipment, the first circulating water pool and the second circulating water pool are connected to a new water pool, the new water pool is connected to the low-temperature water equipment through a new water pipe, the low-temperature water equipment is connected to a second cooling tower, the second cooling tower is connected to the first circulating water pool through a first return water pipe, and the second cooling tower is connected to the second circulating water pool through a second return water pipe.

[0009] A new water pump is installed on the new water pipeline.

[0010] The high-temperature water equipment is connected to the first cooling tower, and the first cooling tower is connected to the first circulating water pool.

[0011] The new water tank is connected to a water replenishment pump, which is connected to the first circulating water tank via a first water replenishment branch pipe, and the water replenishment pump is connected to the second circulating water tank via a second water replenishment branch pipe.

[0012] A first circulating water pump is installed on the pipeline connecting the first circulating water tank and the high-temperature water equipment, and a second circulating water pump is installed on the pipeline connecting the second circulating water tank and the low-temperature water equipment.

[0013] A first valve is installed on the first water supply branch pipe, and a second valve is installed on the second water supply branch pipe.

[0014] A check valve and a third valve are installed on the new water pipeline connecting the new water pump and the low-temperature water equipment; a fourth valve is installed on the first return water pipeline; and a fifth valve is installed on the second return water pipeline.

[0015] The first cooling tower is installed on the pipeline connecting the high-temperature water equipment and the first circulating water pool, and the second cooling tower is installed on the pipeline connecting the low-temperature water equipment and the pipeline before the first return water pipeline and the second return water pipeline branch off at a T-junction. The first circulating water pump and the high-temperature water equipment are connected through a pipeline, and the second circulating water pump and the low-temperature water equipment are connected through a pipeline.

[0016] A sixth valve is installed on the circulating water supply pipeline of the low-temperature water equipment, which connects the second circulating water pump and the low-temperature water equipment. When the new water pipeline is connected to the low-temperature water equipment, it connects to the pipeline between the sixth valve and the low-temperature water equipment.

[0017] A first drain pipe is installed on the first circulating water tank, and a first drain valve is installed on the first drain pipe. A second drain pipe is installed on the second circulating water tank, and a second drain valve is installed on the second drain pipe.

[0018] The working principle and beneficial effects of this utility model are as follows:

[0019] The industrial equipment circulating cooling water supply system of this utility model has a first circulating water tank and a second circulating water tank connected to a new water tank via pipelines. Water from both tanks is supplied through the new water tank. When the low-temperature circulating water system operates independently and can meet the water supply temperature requirements of the low-temperature water-using equipment, the operating principle and process are as follows: The first circulating water tank is connected to the high-temperature water-using equipment, providing cooling water to it. The outlet water from the high-temperature equipment is cooled by a first cooling tower and then returned to the first circulating water tank, achieving water recycling. A temperature sensor for the high-temperature equipment monitors the temperature in real time and provides feedback on the real-time water temperature. The second circulating water tank is connected to the low-temperature water-using equipment, providing cooling water to it. The outlet water from the low-temperature equipment is cooled by a second cooling tower and then returned to the second circulating water tank, achieving water recycling. A low-temperature sensor for the low-temperature equipment monitors the temperature in real time and provides feedback on the real-time water temperature. To address the problem of unreliable water supply temperature for the low-temperature equipment, a new water tank is connected to the low-temperature equipment via a new water pipeline. A new water pump is installed on this pipeline to pump water to the low-temperature equipment. The low-temperature water supply equipment is connected to the second cooling tower. The second cooling tower is connected to the first circulating water pool via the first return water pipe, and the second cooling tower is connected to the second circulating water pool via the second return water pipe. When the water supply temperature of the low-temperature water supply equipment cannot meet the requirements, the fresh water pump is started to draw fresh water from the fresh water pool and supply it to the low-temperature water supply equipment through the fresh water pipe. After the fresh water in the fresh water pipe cools the low-temperature water supply equipment, it flows out of the low-temperature water supply equipment, is cooled by the second cooling tower, and then returns to the second circulating water pool through the second return water pipe. Under this operating condition, if the water replenishment of the high-temperature circulating water system exceeds the demand (resulting in natural overflow and sewage discharge) or the water supply temperature of the high-temperature circulating water system is too high, the second circulating water pump and the fresh water pump can be started to supply water to the low-temperature water supply equipment, provided that the water supply temperature and volume of both the high-temperature and low-temperature circulating water systems are met. By coordinating the control of the flow rates of the two water supply pipes (fresh water pipe and low-temperature water supply equipment circulating water supply pipe) and the two return water pipes (first return water pipe and second return water pipe), the sewage discharge of the circulating water system is minimized. Attached Figure Description

[0020] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0021] Figure 1 This is a schematic diagram of the industrial equipment circulating cooling water supply system described in this utility model;

[0022] The labels in the attached diagram are as follows: 1. New water tank; 2. Makeup water pump; 3. New water pump; 4. First circulating water tank; 5. Second circulating water tank; 6. First circulating water pump; 7. Second circulating water pump; 8. High-temperature water equipment; 9. Low-temperature water equipment; 10. First cooling tower; 11. Second cooling tower; 12. First makeup water branch pipe; 13. Second makeup water branch pipe; 14. First valve; 15. Second valve; 16. Third valve; 17. Fourth valve; 18. Fifth valve; 19. Sixth valve; 20. Check valve; 21. New water pipeline; 22. First return water pipeline; 23. First drain valve; 24. Second drain valve; 25. Second return water pipeline; 26. Circulating water supply pipeline for low-temperature water equipment. Detailed Implementation

[0023] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0024] As attached Figure 1As shown, this utility model is an industrial equipment circulating cooling water supply system. A first circulating water tank 4 is connected to a high-temperature water-using device 8, a second circulating water tank 5 is connected to a low-temperature water-using device 9, and both are connected to a fresh water tank 1. The fresh water tank 1 is connected to the low-temperature water-using device 9 via a fresh water pipe 21. The low-temperature water-using device 9 is connected to a second cooling tower 11. The second cooling tower 11 is connected to the first circulating water tank 4 via a first return water pipe 22, and to the second circulating water tank 5 via a second return water pipe 25. Temperature sensors are installed in both the high-temperature water-using device 8 and the low-temperature water-using device 9. To address the shortcomings of existing technologies, an improved technical solution is proposed. In this structural configuration, the first circulating water tank 4 and the second circulating water tank 5 are respectively connected to the fresh water tank 1 via pipelines, meaning that the water in both tanks is supplied through the fresh water tank 1. When the low-temperature circulating water system operates independently and can meet the water supply temperature requirements of the low-temperature water-using equipment, the operating principle and process of the water supply system are as follows: The first circulating water tank 4 is connected to the high-temperature water-using equipment 8, and is used to supply cooling water to the high-temperature water-using equipment 8. The outlet water of the high-temperature water-using equipment 8 is cooled by the first cooling tower 10 and then returned to the first circulating water tank 4, realizing the recycling of cooling water. The temperature sensor of the high-temperature water-using equipment 8 is used to monitor the water supply temperature in real time and provide feedback on the real-time water temperature. The second circulating water tank 5 is connected to the low-temperature water-using equipment 9, and is used to supply cooling water to the low-temperature water-using equipment 9. The outlet water of the low-temperature water-using equipment 9 is cooled by the second cooling tower 11 and then returned to the second circulating water tank 5, realizing the recycling of cooling water. The low-temperature sensor of the low-temperature water-using equipment 9 is used to monitor and provide feedback on the real-time water temperature. To solve the problem that the water supply temperature of the low-temperature water-using equipment cannot be guaranteed, the new water tank 1 is connected to the low-temperature water-using equipment 9 through the new water pipe 21. A new water pump 3 is installed on the new water pipe 21, and the new water pump 3 is used to pump new water to the low-temperature water-using equipment. The low-temperature water supply device 9 is connected to the second cooling tower 11. The second cooling tower 11 is connected to the first circulating water tank 4 via the first return water pipe 22, and to the second circulating water tank 5 via the second return water pipe 25. When the water supply temperature of the low-temperature water supply device 9 cannot meet the requirements, the fresh water pump 3 is started to draw fresh water from the fresh water tank 1 and supply it to the low-temperature water supply device 9 through the fresh water pipe 21. After the fresh water in the fresh water pipe 21 cools the low-temperature water supply device 9, it flows out of the low-temperature water supply device 9, is cooled by the second cooling tower 11, and then returns to the second circulating water tank through the second return water pipe. Under this operating condition, if the water replenishment of the high-temperature circulating water system exceeds the demand (resulting in natural overflow and sewage discharge) or the water supply temperature of the high-temperature circulating water system is too high, the second circulating water pump and the fresh water pump can be started to supply water to the low-temperature water supply device, provided that the water supply temperature and volume of both the high-temperature and low-temperature circulating water systems are met.By coordinating the flow rates of the two water supply pipes (new water pipe 21 and circulating water supply pipe 26) and two return water pipes (first return water pipe 22 and second return water pipe 25) of the low-temperature water equipment, the sewage discharge of the circulating water system is minimized. The industrial equipment circulating cooling water supply system described in this utility model has a simple structure. While ensuring the water supply temperature and volume of both high-temperature and low-temperature circulating water systems, it effectively reduces sewage discharge by coordinating the flow rates of the two water supply pipes (in project implementation, a variable frequency pump can be used to adjust the flow rate) and two return water pipes of the low-temperature water equipment, achieving stable, reliable, economical, and environmentally friendly operation of the entire circulating water system.

[0025] The high-temperature water-using equipment 8 is connected to the first cooling tower 10, and the first cooling tower 10 is connected to the first circulating water pool 4. In this structure, the water outlet of the high-temperature water-using equipment 8 enters the first cooling tower 10, is cooled, and then flows back to the first circulating water pool 4, realizing the recycling and cooling of circulating water.

[0026] The new water tank 1 is connected to a water replenishment pump 2, which is connected to a first circulating water tank 4 via a first water replenishment branch pipe 12, and to a second circulating water tank 5 via a second water replenishment branch pipe 13. With this structure, one water replenishment pump simultaneously pumps water to both the first and second water replenishment branch pipes 12 and 13, meeting the water replenishment needs of both the first and second circulating water tanks 4 and 5.

[0027] A first circulating water pump 6 is installed on the pipeline connecting the first circulating water tank 4 and the high-temperature water equipment 8, and a second circulating water pump 7 is installed on the pipeline connecting the second circulating water tank 5 and the low-temperature water equipment 9. In this structure, the first circulating water pump 6 is used to pump the cooling water from the first circulating water tank 4 to the high-temperature water equipment 8, thereby achieving reliable cooling of the high-temperature water equipment 8.

[0028] A first valve 14 is installed on the first water supply branch pipe 12, and a second valve 15 is installed on the second water supply branch pipe 13. This structure regulates the water supply to the first water supply branch pipe 12 by controlling the opening and closing of the first valve 14 and the water supply to the second water supply branch pipe 13 by controlling the opening and closing of the second valve 15. The first circulating water tank 4 is equipped with high-level and low-level water level sensors to monitor the water level, ensuring that the first circulating water tank 4 always has sufficient cooling water reserves. The second circulating water tank 5 is equipped with high-level and low-level water level sensors to monitor the water level, ensuring that the second circulating water tank 5 always has sufficient cooling water reserves.

[0029] A check valve 20 and a third valve 16 are installed on the new water pipeline 21 connecting the new water pump 3 and the low-temperature water equipment 9. A fourth valve 17 is installed on the first return water pipeline 22, and a fifth valve 18 is installed on the second return water pipeline 25. In this structure, the check valve is a one-way valve to prevent water backflow and contamination of the water source in the new water tank. The opening and closing of the third valve 16 and its opening degree are controlled to regulate the water supply of the new water pipeline 21, and the opening and closing of the fourth valve 17 and the fifth valve 18 are controlled to regulate the return water volume in the first return water pipeline 22 and the second return water pipeline 25.

[0030] The first cooling tower 10 is installed on the pipeline connecting the high-temperature water equipment 8 and the first circulating water tank 4. The second cooling tower 11 is installed on the pipeline connecting the low-temperature water equipment 9 and the second circulating water tank 5. The first circulating water pump 6 and the high-temperature water equipment 8 are connected by a pipeline, and the second circulating water pump 7 and the low-temperature water equipment 9 are connected by a pipeline. A fifth valve 18 is installed on the second return water pipeline 25 connecting the second circulating water tank 5 and the low-temperature water equipment 9. A sixth valve 19 is installed on the low-temperature water equipment circulating water supply pipeline 26 connecting the second circulating water pump 7 and the low-temperature water equipment 9. When the new water pipeline 21 connects to the low-temperature water equipment 9, it connects to the pipeline between the sixth valve 19 and the low-temperature water equipment 9. In the above structure, different components are connected through different pipelines to form an integrated water supply system.

[0031] A first drain pipe with a first drain valve 23 is installed on the first circulating water tank 4. A second drain pipe with a second drain valve 24 is installed on the second circulating water tank 5. In this configuration, the first drain valve 23 on the first drain pipe is normally closed, and when opened, it discharges wastewater from the first circulating water tank 4. Similarly, the second drain valve 24 on the second drain pipe is normally closed, and when opened, it discharges wastewater from the second circulating water tank 5.

[0032] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A circulating cooling water supply system for industrial equipment, characterized in that: The first circulating water tank (4) is connected to the high-temperature water equipment (8), the second circulating water tank (5) is connected to the low-temperature water equipment (9), the first circulating water tank (4) and the second circulating water tank (5) are connected to the new water tank (1), the new water tank (1) is connected to the low-temperature water equipment (9) through the new water pipe (21), the low-temperature water equipment (9) is connected to the second cooling tower (11), the second cooling tower (11) is connected to the first circulating water tank (4) through the first return water pipe (22), and the second cooling tower (11) is connected to the second circulating water tank (5) through the second return water pipe (25).

2. The industrial equipment circulating cooling water supply system according to claim 1, characterized in that: A new water pump (3) is installed on the new water pipe (21).

3. The industrial equipment circulating cooling water supply system according to claim 1 or 2, characterized in that: The high-temperature water equipment (8) is connected to the first cooling tower (10), and the first cooling tower (10) is connected to the first circulating water pool (4).

4. The industrial equipment circulating cooling water supply system according to claim 1 or 2, characterized in that: The new water tank (1) is connected to the water replenishment pump (2), the water replenishment pump (2) is connected to the first circulating water tank (4) through the first water replenishment branch pipe (12), and the water replenishment pump (2) is connected to the second circulating water tank (5) through the second water replenishment branch pipe (13).

5. The industrial equipment circulating cooling water supply system according to claim 3, characterized in that: A first circulating water pump (6) is installed on the pipeline connecting the first circulating water tank (4) and the high-temperature water equipment (8), and a second circulating water pump (7) is installed on the pipeline connecting the second circulating water tank (5) and the low-temperature water equipment (9).

6. The industrial equipment circulating cooling water supply system according to claim 4, characterized in that: A first valve (14) is installed on the first water supply branch pipe (12), and a second valve (15) is installed on the second water supply branch pipe (13).

7. The industrial equipment circulating cooling water supply system according to claim 1 or 2, characterized in that: A check valve (20) and a third valve (16) are installed on the new water pipe (21) connecting the new water pump (3) and the low-temperature water equipment (9). A fourth valve (17) is installed on the first return water pipe (22), and a fifth valve (18) is installed on the second return water pipe (25). One end of the first return water pipe (22) and the second return water pipe (25) are both connected to the second cooling tower (11).

8. The industrial equipment circulating cooling water supply system according to claim 5, characterized in that: The first cooling tower (10) is installed on the pipe connecting the high-temperature water equipment (8) and the first circulating water pool (4), and the second cooling tower (11) is installed on the pipe connecting the low-temperature water equipment (9) and the second circulating water pool (5). The first circulating water pump (6) and the high-temperature water equipment (8) are connected by a pipe, and the second circulating water pump (7) and the low-temperature water equipment (9) are connected by a pipe.

9. The industrial equipment circulating cooling water supply system according to claim 1 or 2, characterized in that: A sixth valve (19) is installed on the circulating water supply pipeline (26) of the low-temperature water equipment that connects the second circulating water pump (7) and the low-temperature water equipment (9). When the new water pipeline (21) connects to the low-temperature water equipment (9), it connects to the pipeline between the sixth valve (19) and the low-temperature water equipment (9).

10. The industrial equipment circulating cooling water supply system according to claim 1 or 2, characterized in that: The first circulating water tank (4) is equipped with a first sewage pipe and a first sewage valve (23). The second circulating water tank (5) is equipped with a second sewage pipe and a second sewage valve (24).

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