CN210662805U

CN210662805U - Boiler blow-off water comprehensive utilization device of thermal power plant

Info

Publication number: CN210662805U
Application number: CN201920823414.2U
Authority: CN
Inventors: 蒋文军
Original assignee: Datang Huayin Electric Power Co ltd; Zhuzhou Huayin Thermal Power Generation Co ltd
Current assignee: Datang Huayin Electric Power Co ltd; Zhuzhou Huayin Thermal Power Generation Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-06-02
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a boiler blow-down water comprehensive utilization device of thermal power plant, comprising a boiler, the boiler has even calandria mouth and decides the calandria mouth, even calandria mouth intercommunication upper portion three-way valve, decide calandria mouth intercommunication lower part three-way valve, the upper portion three-way valve with the lower part three-way valve is all through pipeline intercommunication holding water box, holding water box intercommunication water pipe, the bottom surface is fixed with the water pump under holding water box's the inside, the water pump passes through pipeline intercommunication heat-preserving container. The utility model has simple structure and convenient operation, and is only connected with the heat preservation water tank on the basis of the original boiler; the boiler waste water and tap water are mixed by adopting the heat-preservation water tank, and the tap water is heated to the required temperature, so that the energy is saved.

Description

Boiler blow-off water comprehensive utilization device of thermal power plant

Technical Field

The utility model discloses blowdown water cyclic treatment device, concretely relates to boiler blow off water comprehensive utilization device of thermal power plant.

Background

The utilization of the sewage of the power station boiler is relatively simple at present, and the main process comprises the following steps that the continuous sewage of the boiler is throttled and then subjected to expansion evaporation through a continuous sewage expansion tank, secondary steam after expansion is led to a deaerator, and the sewage after expansion is connected to a periodic expansion tank for further decompression and expansion. The periodic sewage of the boiler is generally directly connected to the periodic sewage flash tank for depressurization and flash expansion, flash steam is not used any more, and is directly discharged to the air, and the sewage and hot water at the bottom of the flash tank is discharged to the trench after being cooled by the sewage cooling tank. The traditional sewage and hot water treatment scheme not only wastes the heat contained in the sewage and hot water, but also wastes water resources and pollutes the environment because the drainage of the trench needs to be mixed with cold.

Disclosure of Invention

In order to solve the problem, the utility model provides a simple structure, the boiler blow off water comprehensive utilization device of thermal power plant of ability make full use of heat energy.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a thermal power plant's boiler blow off water comprehensive utilization device, includes the boiler, the boiler has even calandria and decides the calandria, even calandria intercommunication upper portion three-way valve, decide the calandria intercommunication lower part three-way valve, the upper portion three-way valve with the lower part three-way valve all communicates holding water box through the pipeline, holding water box intercommunication water pipe, the bottom surface is fixed with the water pump under holding water box's the inside, the water pump passes through pipeline intercommunication heat-preserving container.

Preferably, the water heater further comprises a thermometer fixed outside the heat preservation water tank and used for detecting water temperature, a pressure sensor fixed inside the heat preservation water tank and used for detecting pressure, and a flow sensor fixed inside the heat preservation water tank and used for detecting flow speed.

Preferably, a pipeline communicated with the upper three-way valve and the lower three-way valve enters from the lower part of the heat preservation water tank and is spirally arranged along the contour of the inner wall of the heat preservation water tank.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model has simple structure and convenient operation, and is only connected with the heat preservation water tank on the basis of the original boiler;

2. the utility model discloses a holding water tank mixes boiler waste water and running water, heaies up the running water to required temperature, energy saving.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the pipeline communicated by the upper three-way valve of the present invention.

Detailed Description

As shown in fig. 1 and 2, the device for comprehensively utilizing the sewage discharged by the boiler of the thermal power plant comprises a boiler 1, an upper three-way valve 2, a lower three-way valve 3, a heat-preservation water tank 4, a tap water pipe 5 and a water pump 6.

The boiler 1 is provided with a continuous discharge port 7 and a fixed discharge port 8, and continuous discharge (continuous discharge) of the boiler 1, also called surface discharge, is used for discharging grease and foam substances on the surface of boiler water. The fixed-discharge (periodic pollution discharge) of the boiler 1 is also called bottom pollution discharge, and is a better way to discharge water slag, mud and other bottom sediments and simultaneously has the function of reducing the concentration of water in the boiler. The bottom pollution discharge is carried out under the low load of the boiler 1 as much as possible, and water slag is easy to sink and is beneficial to discharge because the water circulation speed is low at the moment.

The continuous discharging port 7 is communicated with the upper three-way valve 2, the fixed discharging port 8 is communicated with the lower three-way valve 3, the upper three-way valve 2 and the lower three-way valve 3 are communicated with the heat preservation water tank 4 through pipelines, the heat preservation water tank 4 is communicated with the tap water pipe 5, and sewage from the boiler 1 flows into the heat preservation water tank 4 to be mixed with tap water to form hot water.

And a water pump 6 is fixed on the lower bottom surface inside the heat preservation water tank 4, and the water pump 6 is communicated with the heat preservation tank through a pipeline. Hot water is pumped into the heat-preserving tank through the water pump 6 and is supplied to users needing the hot water.

The main building of the heat preservation water tank 4 is a steel structure with the length of 10 meters, the width of 5 meters and the height of 3.5 meters.

The mixed hot water can also be conveyed by adopting a pipe network through the consideration of economical efficiency.

The water heater further comprises a thermometer fixed outside the heat preservation water tank 4 and used for detecting water temperature, a pressure sensor fixed inside the heat preservation water tank 4 and used for detecting pressure, and a flow sensor fixed inside the heat preservation water tank 4 and used for detecting flow speed.

When the water in the boiler 1 contains more impurities, the water enters from the lower part of the heat preservation water tank 4 by adopting a pipeline communicated with the upper three-way valve 2 and the lower three-way valve 3, is spirally arranged along the inner wall profile of the heat preservation water tank 4, then is sprayed out from the upper part of the heat preservation water tank 4, is filtered by a filter screen fixed on the upper part of the heat preservation water tank 4, and then returns to be mixed with tap water, and one of the two is arranged to uniformly heat the water; secondly, the water flow resistance is reduced; and the service life of the water pump 6 is prolonged to a certain degree.

The pipelines communicated with the upper three-way valve 2 and the lower three-way valve 3 respectively comprise an external pipeline 9, an internal spiral pipeline 10 and a pipeline 11 which sprays vertically upwards.

Claims

1. The utility model provides a thermal power plant's boiler blow off water comprehensive utilization device, includes the boiler, the boiler has even calandria and decides the calandria, its characterized in that, even calandria intercommunication upper portion three-way valve, decide the calandria intercommunication lower part three-way valve, the upper portion three-way valve with the lower part three-way valve all communicates holding water box through the pipeline, holding water box intercommunication water pipe, holding water box's inside bottom surface is fixed with the water pump down, the water pump passes through pipeline intercommunication heat-preserving container.

2. The device for comprehensively utilizing boiler blow-down water of a thermal power plant according to claim 1, further comprising a thermometer fixed outside the heat-insulating water tank for detecting water temperature, a pressure sensor fixed inside the heat-insulating water tank for detecting pressure, and a flow sensor fixed inside the heat-insulating water tank for detecting flow velocity.

3. The comprehensive utilization device for boiler blow-down water of a thermal power plant according to claim 1, wherein a pipeline communicating the upper three-way valve and the lower three-way valve enters from the lower portion of the holding water tank and is spirally arranged along the contour of the inner wall of the holding water tank.