Integrated cold station cooling water system self-cleaning filtration energy recovery system

Abstract

The utility model relates to the technical field of integrated cold station, specifically disclose integrated cold station cooling water system self -cleaning filtration energy recovery system, including cooling tower, and the cooling tower bottom has the water tray, still include circulating water pump and centrifugal separator, the water tray is opened with the water outlet, and the water outlet of water tray is connected with the water inlet of centrifugal separator through first pipeline, and circulating water pump sets up on first pipeline, the water tray is equipped with the disturbing mechanism, is used for agitating the solid particle deposition of water tray bottom, to make solid particle with water body enter centrifugal separator and separate, the water outlet of centrifugal separator is backflowed to water tray through second pipeline, the utility model can effectively remove the solid particle in water body, reduce the cooling system scale, stabilize system operation energy efficiency, reduce operating cost, reduce the risk of bacterial microorganism breeding, avoid the equipment corrosion risk caused by the excessive chemical agent, comprehensive reduce the cooling system sewage discharge, reach energy recovery benefit.

Description

Technical Field

[0001] This utility model belongs to the field of integrated cooling plant technology, specifically relating to a self-cleaning filtration energy recovery system for integrated cooling plant cooling water systems. Background Technology

[0002] Integrated chiller plants (also known as combined chiller units) are core cooling units in modern district cooling, data centers, large commercial buildings, and industrial plants. Their primary purpose is to provide a stable cooling source for large-scale building complexes or processes in a centralized and efficient manner. This highly integrated system combines chiller units, circulating water pumps, cooling towers, chemical dosing, constant pressure water supply, and control systems into a single unit, aiming to achieve the core objectives of compact equipment, optimal energy efficiency, and simplified operation and management.

[0003] Currently, integrated cooling plant cooling water systems typically employ an open-loop design, where the cooling tower, as a key heat dissipation component, releases system heat through evaporative cooling via direct contact between the cooling water and air. However, this open structure introduces solid particles from the air, such as dust, insects, and leaves, which accumulate in the water pan at the bottom of the cooling tower. Furthermore, as the equipment operates, these solid particles deposit on the surfaces of critical heat exchange components, including the cooling tower packing, pipe walls, and condenser, leading to decreased heat exchange efficiency and increased energy consumption.

[0004] However, current cooling water systems primarily rely on the addition of chemical agents such as scale inhibitors, bactericides, algaecides, and corrosion inhibitors to suppress scaling and microbial growth. However, these chemical agents cannot remove solid particles from the water, and these particles can adsorb the chemicals to some extent, reducing their effective concentration in the water. To ensure treatment effectiveness, it is necessary to increase the dosage of these chemicals, which not only increases operating costs but also increases the risk of equipment corrosion due to excessive chemical dosage. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, the purpose of this invention is to provide an integrated self-cleaning filtration energy recovery system for cooling water systems in cold stations. This invention can effectively remove solid particles from water, reduce operating costs, avoid the risk of equipment corrosion caused by excessive chemical agents, comprehensively reduce the amount of wastewater discharged from the cooling system, and achieve energy recovery benefits.

[0006] The technical solution of this utility model is implemented as follows: The integrated cooling water system for chilled plants is a self-cleaning filtration energy recovery system, including a cooling tower with a water pan at the bottom; it also includes a circulating water pump and a centrifugal separator.

[0007] The water pan has an outlet, which is connected to the inlet of the centrifugal separator via a first pipeline. The circulating water pump is installed on the first pipeline. The water pan is equipped with a disturbance mechanism to agitate the solid particles deposited at the bottom of the water pan so that the solid particles enter the centrifugal separator with the water for separation. The outlet of the centrifugal separator returns to the water pan via a second pipeline.

[0008] Furthermore, it also includes a bag filter. The drain outlet of the centrifugal separator is connected to the inlet of the bag filter through a third pipeline, so that the water containing solid particles separated by the centrifugal separator enters the bag filter for filtration and interception. The outlet of the bag filter is connected to the middle of the second pipeline through a fourth pipeline, so that the water filtered by the bag filter is returned to the water pan.

[0009] Furthermore, the agitation mechanism includes a main pipe and several branch pipes, all of which are arranged side by side at intervals. The main pipe is located at the same end of all the branch pipes and is connected to all the branch pipes. The other ends of all the branch pipes are closed. One end of the main pipe is closed, and the other end is connected to a second pipeline so that water in the second pipeline can enter the agitation mechanism. At the same time, several nozzles are evenly distributed on each branch pipe. The nozzles of all the nozzles face downward or sideways to agitate the solid particles deposited at the bottom of the water pan.

[0010] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a disturbance mechanism within a water pan to agitate solid particles deposited at the bottom, suspending them in the water. These particles are then sequentially separated and filtered by a centrifugal separator and a bag filter under the action of a circulating water pump. This effectively removes solid particles from the water, preventing their deposition in the integrated cooling station's cooling water system, improving heat exchange efficiency, and reducing operating energy consumption. Simultaneously, it reduces the adsorption of chemical agents by solid particles, lowering operating costs and mitigating the risk of equipment corrosion due to excessive chemical dosage. The treated water is then returned to the disturbance mechanism via a second pipeline to agitate the remaining solid particles at the bottom of the water pan for reuse, reducing wastewater discharge and water replenishment. This achieves energy conservation, cost reduction, and environmental friendliness. Attached Figure Description

[0011] Figure 1 - A schematic diagram of the structure of this utility model.

[0012] Figure 2 -Structural diagram of the disturbance mechanism Figure 1 .

[0013] Figure 3 -Structural diagram of the disturbance mechanism Figure 2 .

[0014] Wherein: 1-Cooling tower; 2-Disturbance mechanism; 21-Main pipe; 22-Branch pipe; 23-Sprayer head; 3-Water pan; 4-Circulating water pump; 5-Centrifugal separator; 6-Bag filter; a-First pipeline; b-Second pipeline; c-Third pipeline; d-Fourth pipeline. Detailed Implementation

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

[0016] Because integrated cooling plant cooling water systems are open-designed, airborne solid particles such as dust, insects, and leaves can enter the system during operation. These particles accumulate on the cooling tower packing, pipe walls, and condenser surfaces, leading to decreased heat exchange efficiency and increased energy consumption. Existing cooling water systems primarily treat water by adding chemical agents to inhibit scale formation and microbial growth, but this cannot completely remove solid particles. Furthermore, the presence of solid particles can adsorb these chemical agents, reducing their concentration in the water. To maintain treatment effectiveness, this necessitates increasing the dosage of chemical agents. Increased dosage not only raises operating costs but also accelerates equipment corrosion. Excessive chemical dosage leads to elevated ion concentrations in the system, requiring the discharge of more wastewater to maintain cooling water system stability.

[0017] Based on this, the present invention provides an integrated self-cleaning filtration energy recovery system for chiller plant cooling water systems, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 The arrows on the pipeline in the diagram indicate the direction of water flow. The system includes a cooling tower 1 with a water pan 3 at the bottom; it also includes a circulating water pump 4 and a centrifugal separator 5.

[0018] The water pan 3 has an outlet, which is connected to the inlet of the centrifugal separator 5 via the first pipe a. The circulating water pump 4 is installed on the first pipe a to pump the water in the water pan 3 into the centrifugal separator 5. The water pan 3 is equipped with a disturbance mechanism 2 to agitate the solid particles deposited at the bottom of the water pan 1 so that the solid particles enter the centrifugal separator 5 with the water for separation. The outlet of the centrifugal separator 5 returns to the water pan 3 via the second pipe b.

[0019] Here, a disturbance mechanism is installed in the water pan to agitate the solid particles deposited at the bottom of the pan, suspending them in the water. Then, driven by a circulating water pump, the solid particles are separated in a centrifugal separator. These solid particles can be directly discharged with a small amount of water, thus preventing their deposition in the integrated cooling station's cooling water system, improving heat exchange efficiency, and reducing operating energy consumption. Simultaneously, it reduces the adsorption of chemical agents by solid particles, lowering operating costs and reducing the risk of equipment corrosion due to excessive chemical agents. The separated water is returned to the water pan for reuse, reducing wastewater discharge and water replenishment, thereby achieving energy conservation, consumption reduction, and environmental friendliness.

[0020] In specific implementation, it also includes a bag filter 6. The drain outlet of the centrifugal separator 5 is connected to the inlet of the bag filter 6 through the third pipe c, so that the water containing solid particles separated by the centrifugal separator 5 enters the bag filter 6 for filtration and interception. The outlet of the bag filter 6 is connected to the middle of the second pipe b through the fourth pipe d, so that the water filtered by the bag filter 6 is returned to the water pan 3.

[0021] In this way, the water containing solid particles separated by the centrifugal separator can enter the bag filter for secondary treatment. The solid particles are trapped inside the bag filter, which can then be manually cleaned periodically. The filtered water is also returned to the water tray, avoiding water waste and maximizing the utilization of water resources.

[0022] In practical implementation, water distribution nozzles can be installed in the water tray, and the water from the nozzles will agitate the solid particles deposited in the water tray. In this embodiment, the agitation mechanism 2 includes a main pipe 21 and several branch pipes 22. All branch pipes 22 are arranged side by side at intervals. The main pipe 21 is located at the same end of all branch pipes 22 and is connected to all branch pipes 22. The other end of all branch pipes 22 is closed. One end of the main pipe 21 is closed, and the other end is connected to the second pipeline b, so that the water in the second pipeline b enters the agitation mechanism 2. At the same time, several nozzles 23 are evenly distributed on each branch pipe 22. All nozzles 23 have their nozzles facing downward or sideways to agitate the solid particles deposited at the bottom of the water tray 3.

[0023] In this way, the pressurized water returning from the second pipeline agitates the solid particles deposited at the bottom of the water pan through the nozzle of the agitation mechanism. Without additional energy consumption, the solid particles can be agitated and efficiently enter the centrifugal separator and subsequent bag filter along with the water.

[0024] The agitation mechanism here is designed according to the shape and size of the water basin. The nozzles of adjacent branch pipes can be alternately arranged, and the nozzle orifices can be angled downwards or arranged laterally to ensure that the water from the agitation mechanism nozzles covers the entire water basin, effectively agitating the solid particles deposited at the bottom of the basin. Figure 2 This is a schematic diagram of the disturbance mechanism with the nozzle facing downwards. Figure 3 This is a schematic diagram of the disturbance mechanism on the side of the nozzle.

[0025] In use, this system is set to operate intermittently. When it is necessary to remove solid particles from the water pan, the circulating water pump is turned on. To facilitate equipment maintenance and repair, corresponding maintenance valves are installed on the first, second, third, and fourth pipelines, which is conceivable in this field and will not be elaborated upon here. Practical experience shows that using the system described in this invention to remove solid particles in a timely manner can reduce the amount of chemical reagents added by approximately 14%, reduce wastewater discharge from the cooling water system by approximately 80%, and allow for the basic recycling and reuse of water, achieving the goals of water conservation and energy recovery.

[0026] Finally, it should be noted that the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations and modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. An integrated cooling water system for chilled plants with self-cleaning filtration and energy recovery, comprising a cooling tower with a water pan at the bottom; characterized in that: Includes circulating water pumps and centrifugal separators; The water pan has an outlet, which is connected to the inlet of the centrifugal separator via a first pipeline. The circulating water pump is installed on the first pipeline. The water pan is equipped with a disturbance mechanism to agitate the solid particles deposited at the bottom of the water pan so that the solid particles enter the centrifugal separator with the water for separation. The water outlet of the centrifugal separator flows back to the water pan through a second pipeline.

2. The integrated chiller cooling water system self-cleaning filtration energy recovery system according to claim 1, characterized in that: It also includes a bag filter. The drain outlet of the centrifugal separator is connected to the inlet of the bag filter through a third pipeline, so that the water containing solid particles separated by the centrifugal separator enters the bag filter for filtration and interception. The outlet of the bag filter is connected to the middle of the second pipeline through a fourth pipeline, so that the water filtered by the bag filter is returned to the water pan.

3. The integrated chiller cooling water system self-cleaning filtration energy recovery system according to claim 1 or 2, characterized in that: The agitation mechanism includes a main pipe and several branch pipes. All branch pipes are arranged side by side at intervals. The main pipe is located at the same end of all branch pipes and is connected to all branch pipes. The other ends of all branch pipes are closed. One end of the main pipe is closed, and the other end is connected to a second pipeline so that water in the second pipeline can enter the agitation mechanism. At the same time, several nozzles are evenly distributed on each branch pipe. All nozzles face downward or sideways to agitate the solid particles deposited at the bottom of the water pan.

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