Cooling water system for circulating water pump bearing

Abstract

Provided is a circulating water pump bearing cooling water system. According to an existing cooling mode, industrial water is introduced for cooling, a plurality of circulating water pumps need to be started for operation during operation, so that a large amount of industrial water is needed for cooling a cold bearing, and a large amount of industrial water is wasted. The device comprises an industrial water pipe and a plurality of groups of circulating water pumps, a water inlet pipe of each group of circulating water pumps is communicated with a high-level water tank, a water outlet pipe of each group of circulating water pumps is communicated to a main water pipe, and the industrial water pipe is divided into a plurality of groups of water distribution pipelines. Each group of water distribution pipelines are communicated to a bearing cooling water pipeline of the circulating water pump; the bearing cooling water pipeline is communicated with a self-cooling pipeline, and the self-cooling pipeline is communicated to the front of the hydraulic control butterfly valve of the water outlet pipe; a water diversion pipeline is communicated between the front portion of the hydraulic control butterfly valve and the rear portion of the hydraulic control butterfly valve of the water outlet pipe, and a water filter is installed on the water diversion pipeline. The cooling device is used for cooling the circulating water pump bearing.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation, and in particular to a circulating water pump bearing cooling water system. Background Technology

[0002] The circulating water pump and circulating water pipeline are used for the water supply circulation of the refrigeration and heating station. Before the circulating water pump is started, cooling water needs to be introduced into the motor bearing for cooling. Currently, industrial water is used for cooling. Since multiple circulating water pumps need to be started and running during operation, a large amount of industrial water is required for cooling the bearing, which wastes a lot of industrial water. Utility Model Content

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a circulating water pump bearing cooling water system.

[0004] The above objectives are achieved through the following scheme:

[0005] A circulating water pump bearing cooling water system comprises an industrial water pipe and multiple sets of circulating water pumps. The inlet pipe of each set of circulating water pumps is connected to a high-level water tank, and the outlet pipe of each set of circulating water pumps is connected to a collection pipe, which is connected to a main water pipe. The industrial water pipe is divided into multiple branch water pipes, and each branch water pipe is connected to the bearing cooling water pipe of the circulating water pump.

[0006] The bearing cooling water pipeline is connected to the self-cooling pipeline, and the self-cooling pipeline is connected to the hydraulic control butterfly valve before the outlet pipe.

[0007] A water inlet pipe is connected between the front and rear of the hydraulically controlled butterfly valve of the water outlet pipe, and a water filter is installed on the water inlet pipe.

[0008] The circulating water pump bearing cooling water system includes a water intake pipeline comprising a main water intake pipeline and a water intake bypass pipeline, wherein the main water intake pipeline and the water intake bypass pipeline are connected in parallel, and valves are installed on both the main water intake pipeline and the water intake bypass pipeline.

[0009] The circulating water pump bearing cooling water system is described above, wherein an electrically controlled valve is installed on the self-cooling pipeline.

[0010] The circulating water pump bearing cooling water system is described above, wherein a check valve is installed on the water distribution pipeline. Beneficial effects

[0011] 1. By setting up a self-cooling pipeline, the bearing can be cooled by introducing water from the circulating water pump into the bearing cooling water pipeline during use, without having to continuously cool it with industrial water, thus preventing the waste of a large amount of industrial water.

[0012] 2. This utility model is equipped with a water inlet pipeline. Before the first circulating water pump is started, it is cooled by industrial water. Before the other circulating water pumps are started, the outlet water of the first circulating water pump can be led to the self-cooling pipeline through the water inlet pipeline and cooled by the circulating water of the first circulating water pump, thereby reducing the use of industrial water. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention;

[0014] Figure 2 for Figure 1 Enlarged view of part A;

[0015] In the diagram: 1. High-level water tank; 2. Circulating water pump; 3. Bearing cooling water pipeline; 4. Self-cooling pipeline; 5. Branch pipeline; 6. Industrial water pipeline; 7. Outlet pipeline; 8. Main water pipeline; 9. Hydraulic butterfly valve; 10. Electrically controlled valve; 11. Check valve; 12. Main water intake pipeline; 13. Valve; 14. Water filter; 15. Water intake bypass; 16. Inlet pipeline; 17. Cooling water outlet pipeline; 18. Manifold. Detailed Implementation

[0016] Reference Figures 1-2 A circulating water pump bearing cooling water system comprises an industrial water pipe 6 and multiple sets of circulating water pumps 2. The inlet pipe 16 of each set of circulating water pumps is connected to a high-level water tank 1. The outlet pipe 7 of each set of circulating water pumps is connected to a collection pipe, which is connected to a main water pipe 8. The industrial water pipe is divided into multiple branch water pipes 5, and each branch water pipe is connected to the bearing cooling water pipe 3 of the circulating water pump.

[0017] The bearing cooling water pipeline is connected to the self-cooling pipeline 4, and the self-cooling pipeline is connected to the hydraulic control butterfly valve 9 before the outlet pipe.

[0018] A water inlet pipe is connected between the front and rear of the hydraulic control butterfly valve of the water outlet pipe, and a water filter 14 is installed on the water inlet pipe.

[0019] The water intake pipeline includes a main water intake line 12 and a bypass water intake line 15. The main water intake line and the bypass water intake line are connected in parallel. A valve 13 is installed on both the main water intake line and the bypass water intake line.

[0020] An electrically controlled valve 10 is installed on the self-cooling pipeline.

[0021] A check valve 11 is installed on the water distribution pipeline.

[0022] Working principle: Before starting the first circulating water pump, industrial water pipes are used to supply bearing cooling water to this pump. The industrial water enters the bearing cooling water pipeline through the industrial water pipe and then enters the motor bearing of the circulating water pump. The water is discharged to the high-level water tank through the cooling water outlet pipeline. After the first circulating water pump starts, the industrial water supply is stopped, and the water from the outlet pipe is introduced into the bearing cooling water pipeline through the self-cooling pipeline to self-cool the bearing. Before starting other circulating water pumps, the valves on the priming main pipeline of the pumps to be started are opened, and the outlet pipes of multiple circulating water pumps converge at the main priming pipeline. Pipe 18: Water from the outlet pipe of the first circulating water pump to be started will be partially introduced into the outlet pipe of the circulating water pump to be started through the manifold. Since the hydraulic butterfly valve is closed before the circulating water pump is started, the water entering the outlet pipe of this circulating water pump will enter the outlet pipe before the hydraulic butterfly valve through the priming main pipe, and then enter the self-cooling pipeline. Finally, it will cool the circulating water pump to be started through the bearing cooling water pipeline. In this way, the circulating water of the already started circulating water pump is used for cooling, eliminating the need for industrial water, reducing industrial water consumption, improving the efficiency of circulating water utilization, and increasing the economic operation of the unit.

Claims

1. A circulating water pump bearing cooling water system characterized by: Its components include industrial water pipes and multiple sets of circulating water pumps. The inlet pipe of each set of circulating water pumps is connected to a high-level water tank, and the outlet pipe of each set of circulating water pumps is connected to a collection pipe, which is connected to a main water pipe. The industrial water pipes are divided into multiple branch water pipes, and each branch water pipe is connected to the bearing cooling water pipe of the circulating water pump. The bearing cooling water pipeline is connected to the self-cooling pipeline, and the self-cooling pipeline is connected to the hydraulic control butterfly valve before the outlet pipe. A water inlet pipe is connected between the front and rear of the hydraulically controlled butterfly valve of the water outlet pipe, and a water filter is installed on the water inlet pipe.

2. The circulating water pump bearing cooling water system according to claim 1, characterized in that: The water supply pipeline includes a main water supply line and a bypass water supply line. The main water supply line and the bypass water supply line are connected in parallel. Valves are installed on both the main water supply line and the bypass water supply line.

3. A circulating water pump bearing cooling water system according to claim 2, characterized in that: An electrically controlled valve is installed on the self-cooling pipeline.

4. A circulating water pump bearing cooling water system according to claim 3, characterized in that: A check valve is installed on the aforementioned water distribution pipeline.

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