System for improving circulating water efficiency of power plant
By designing a circulating water system, using the connecting pipeline and valve to achieve sharing and return of circulating water, the problem of the large number of circulating water pumps in winter is solved, the power plant's own electricity consumption is reduced, the normal water use demand of the generator set is ensured, and environmentally friendly and economical results are achieved.
Patent Information
- Application Number
- CN202422188156.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-09-06
AI Technical Summary
In winter, the circulating water pumps of the power plant have excessive or insufficient water due to changes in load and lower temperature, resulting in a large number of circulating water pumps running, which increases the power plant's own electricity consumption.
A system is designed to realize the sharing and return of circulating water through the connection pipes and valves between the circulating water pool and the circulating water pump, ensuring that the circulating water consumption of each generator set is met, and at the same time reducing the number of circulating water pumps.
By making full use of the circulating water volume of each circulating water pump, the number of circulating water pumps is reduced, the power plant's self-use power is reduced, and the normal water use demand for the generator set is ensured, achieving environmentally friendly and economical results.
Smart Images
Figure CN222936090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a system for improving the efficiency of circulating water in a power plant, belonging to the technical field of circulating water in a power plant. Background Art
[0002] Generally, each generating unit in a power plant is equipped with two circulating water pumps, and each circulating water pump is matched with a circulating water tank; due to the fact that the generating units are often in a variable load state and affected by seasons, the working conditions of the two circulating water pumps are as follows: in winter, the temperature is low and the water consumption of the equipment is small. If two circulating water pumps are started for each generating unit, the water output of the circulating water pumps is greater than the water consumption of the equipment, resulting in an excess of water; if only one circulating water pump is started, the water volume in the matching circulating water tank cannot meet the water consumption requirements of the generating unit. In view of the above working conditions, it is necessary to technically transform the existing equipment to reduce the number of operating circulating water pumps in winter on the premise of ensuring the water consumption of the generating unit. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a system for improving the efficiency of circulating water in a power plant, which makes full use of the circulating water volume of each circulating water pump, reduces the number of operating circulating water pumps of the unit and thus reduces the self - consumption electricity of the power plant, and solves the above - mentioned technical problems existing in the prior art.
[0004] The technical solution of the utility model is as follows:
[0005] A system for improving the efficiency of circulating water in a power plant includes a first circulating water tank, a second circulating water tank, a first circulating water pump, a first electric valve at the circulating water outlet, a first manual valve at the circulating water outlet, a second circulating water pump, a second electric valve at the circulating water outlet, a second manual valve at the circulating water outlet, an outlet connection electric valve, an outlet connection pipeline, a return water connection pipe, a first circulating water main pipe and a second circulating water main pipe. On the first circulating water main pipe of the first circulating water tank, a first circulating water pump, a first electric valve at the circulating water outlet and a first manual valve at the circulating water outlet are sequentially arranged; on the second circulating water main pipe of the second circulating water tank, a second circulating water pump, a second electric valve at the circulating water outlet and a second manual valve at the circulating water outlet are sequentially arranged. The first circulating water main pipe between the first electric valve at the circulating water outlet and the first manual valve at the circulating water outlet is connected to the second circulating water main pipe between the second electric valve at the circulating water outlet and the second manual valve at the circulating water outlet through an outlet connection pipeline, and an outlet connection electric valve is arranged on the outlet connection pipeline; a return water connection pipe is additionally arranged between the first circulating water tank and the second circulating water tank and is connected through the return water connection pipe.
[0006] A first flowmeter is arranged on the first circulating water main pipe at the outlet of the first electric valve at the circulating water outlet, and a second flowmeter is arranged on the second circulating water main pipe at the outlet of the second electric valve at the circulating water outlet.
[0007] The utility model makes full use of the circulating water volume of each circulating water pump, reduces the number of operating circulating water pumps and thus reduces the self - consumption electricity of the power plant.
[0008] With the adoption of the present utility model, the second circulating water pump stops working. The circulating water in the first circulating water pool of the generating set is sent through the first circulating water pump, the first electric valve at the circulating water outlet, the connecting electric valve at the outlet, the connecting pipeline at the outlet and the second manual valve at the circulating water outlet to connect the first circulating water main pipe and the second circulating water main pipe, and then is respectively sent to their respective power generation circulating water systems through the first circulating water main pipe and the second circulating water main pipe, and then returns to the first circulating water pool and the second circulating water pool respectively. Under the connection of the return water connecting pipe, the first circulating water pool and the second circulating water pool respectively maintain the water level balance of the circulating water, ensuring the water requirement for the generating set. While ensuring the circulating water volume, the operation of one circulating water pump can be saved, greatly reducing the self - consumption of electricity.
[0009] The beneficial effects of the technology of the present utility model are as follows: making full use of the circulating water volume of each circulating water pump, reducing the number of operating circulating water pumps of the unit and thus reducing the self - consumption of electricity in the power plant, ensuring the normal water requirement of each generating set while reducing one circulating water pump, and having no pollution in the energy utilization process, which is both environmentally friendly and economical. Brief Description of the Drawings
[0010] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model:
[0011] In the figure: the first circulating water pool 1, the second circulating water pool 2, the first circulating water pump 3, the first electric valve at the circulating water outlet 4, the first manual valve at the circulating water outlet 5, the second circulating water pump 6, the second electric valve at the circulating water outlet 7, the second manual valve at the circulating water outlet 8, the connecting electric valve at the outlet 9, the connecting pipeline at the outlet 10, the return water connecting pipe 11, the first circulating water main pipe 12, the second circulating water main pipe 13, the first flowmeter 14, the second flowmeter 15. Detailed Embodiment
[0012] The following further illustrates the present utility model through embodiments in conjunction with the drawings.
[0013] A system for improving the efficiency of circulating water in a power plant, comprising a first circulating water tank 1, a second circulating water tank 2, a first circulating water pump 3, a first electric valve 4 at the circulating water outlet, a first manual valve 5 at the circulating water outlet, a second circulating water pump 6, a second electric valve 7 at the circulating water outlet, a second manual valve 8 at the circulating water outlet, an outlet connection electric valve 9, an outlet connection pipeline 10, a return water connecting pipe 11, a first circulating water main pipe 12 and a second circulating water main pipe 13. On the first circulating water main pipe 12 of the first circulating water tank 1, a first circulating water pump 3, a first electric valve 4 at the circulating water outlet and a first manual valve 5 at the circulating water outlet are sequentially arranged; on the second circulating water main pipe 13 of the second circulating water tank 2, a second circulating water pump 6, a second electric valve 7 at the circulating water outlet and a second manual valve 8 at the circulating water outlet are sequentially arranged. The first circulating water main pipe between the first electric valve 4 at the circulating water outlet and the first manual valve 5 at the circulating water outlet is connected to the second circulating water main pipe between the second electric valve 7 at the circulating water outlet and the second manual valve 8 at the circulating water outlet through the outlet connection pipeline 10, and an outlet connection electric valve 9 is provided on the outlet connection pipeline 10; A return water connecting pipe 11 is additionally arranged between the first circulating water tank 1 and the second circulating water tank 2 and is connected through the return water connecting pipe 11.
[0014] A first flowmeter 14 is provided on the first circulating water main pipe at the outlet of the first electric valve 4 at the circulating water outlet, and a second flowmeter 15 is provided on the second circulating water main pipe at the outlet of the second electric valve 7 at the circulating water outlet.
[0015] The utility model makes full use of the circulating water volume of each circulating water pump, reduces the number of operating circulating water pumps, and thus reduces the self - consumption electricity of the power plant.
[0016] By adopting the utility model, the second circulating water pump 6 stops working. The circulating water in the first circulating water tank 1 of the generator set is sent through the first circulating water pump 3, the first electric valve 4 at the circulating water outlet, the outlet connection electric valve 9, the outlet connection pipeline 10 and the second manual valve 8 at the circulating water outlet to connect the first circulating water main pipe 12 and the second circulating water main pipe 13. Then it is sent to their respective power generation circulating water systems through the first circulating water main pipe 12 and the second circulating water main pipe 13, and then returns to their respective first circulating water tank 1 and second circulating water tank 2. The first circulating water tank 1 and the second circulating water tank 2 keep the water level balance of the circulating water under the connection of the return water connecting pipe 11, ensuring the water demand of the generator set. While ensuring the circulating water volume, it can save the operation of one circulating water pump and greatly reduce the self - consumption electricity.
Claims
1. A system for improving the circulating water efficiency of a power plant, characterized in that: The invention comprises a circulating water pool 1 (1), a circulating water pool 2 (2), a circulating water pump 1 (3), a circulating water outlet electric valve 1 (4), a circulating water outlet manual valve 1 (5), a circulating water pump 2 (6), a circulating water outlet electric valve 2 (7), a circulating water outlet manual valve 2 (8), an outlet communication electric valve (9), an outlet communication pipeline (10), a return water connecting pipe (11), a circulating water dam pipe 1 (12) and a circulating water dam pipe 2 (13). The circulating water pump 1 (3), the circulating water outlet electric valve 1 (4) and the circulating water outlet manual valve 1 (5) are arranged on the circulating water dam pipe 1 (12) of the circulating water pool 1 (1); the ... 2) is provided with a circulating water pump 2 (6), a circulating water outlet electric valve 2 (7) and a circulating water outlet manual valve 2 (8) in sequence on the circulating water pipe 1 (13); the circulating water pipe 1 between the circulating water outlet electric valve 1 (4) and the circulating water outlet manual valve 1 (5) is connected to the circulating water pipe 2 between the circulating water outlet electric valve 2 (7) and the circulating water outlet manual valve 2 (8) through an outlet communication pipe (10); an outlet communication electric valve (9) is provided on the outlet communication pipe (10); a return water communication pipe (11) is provided between the circulating water pool 1 (1) and the circulating water pool 2 (2), and the two are connected through the return water communication pipe (11).
2. A system for improving circulating water efficiency in a power plant according to claim 1, characterized in that: A flow meter 1 (14) is provided on the circulating water pipe 1 at the outlet of the circulating water outlet electric valve 1 (4), and a flow meter 2 (15) is provided on the circulating water pipe 2 at the outlet of the circulating water outlet electric valve 2 (7).