CN220485382U

CN220485382U - Water seal overflow water recycling device

Info

Publication number: CN220485382U
Application number: CN202322100030.7U
Authority: CN
Inventors: 薛海峰; 刘晓刚; 韩平; 张明; 吕宝凤; 吴永斌
Original assignee: Shaanxi Changqing Energy & Chemical Co ltd
Current assignee: Shaanxi Changqing Energy & Chemical Co ltd
Priority date: 2023-03-23
Filing date: 2023-08-07
Publication date: 2024-02-13
Anticipated expiration: 2033-08-07

Abstract

The utility model discloses a water seal overflow water recycling device, which comprises a process deaerator (1) and a primary water seal barrel (4) connected through an overflow pipeline (16); the primary water seal barrel (4) is connected with the secondary water seal barrel (5) through a primary water seal overflow pipeline (17); the upper end of the secondary water seal barrel (5) is connected with a secondary water seal overflow pipeline (15); the secondary water seal overflow pipeline (15) is connected with the drainage expansion tank (13) through a water seal overflow water recycling pipeline (10). The utility model solves the problem of water resource waste caused by overflow of the water seal overflow water, and simultaneously solves the problem that the overflow water forms a moist environment on site, thereby avoiding equipment corrosion.

Description

Water seal overflow water recycling device

Technical Field

The utility model relates to the field of coal chemical industry, in particular to a water seal overflow water recycling device, and belongs to the field of environmental protection.

Background

At present, most boiler water supply systems in the coal chemical industry adopt thermal deoxidization, namely, steam is introduced into a deoxidizer, the water temperature is increased, the partial pressure of gas components is reduced, and the gas dissolved in the water escapes from the water, so that O is removed ₂ The purpose is to ensure the quality of boiler feed water. For the isolated air, the deaerator must keep certain pressure, therefore the deaerator is provided with water seal arrangement, and when deaerator work surpasses normal operating pressure, the water seal action, deaerator pressure release, in addition, desalted water also can overflow to the scene through the water seal in the deaerator, prevents deaerator liquid level too high. In the operation process, the desalted water is required to be continuously supplemented to the water sealing device, the redundant desalted water flows out through the overflow pipeline, so that the desalted water is wasted, meanwhile, overflow water flows to the sewage disposal system, and the sewage treatment load is increased. Therefore, through research, we solve the problem by adding a device with water seal overflow water recycling.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a water seal overflow water recycling device, wherein the overflow water of a process deaerator is recycled to a steam turbine drain expansion tank, so that the recycling of water resources is realized, and meanwhile, the overflow water is prevented from being discharged to sewage treatment through a sewage drainage system, and the sewage treatment load is reduced to a certain extent. The device has small investment and no operation cost, and can realize the recycling of the overflow water by utilizing the pressure difference of the system.

The utility model aims to solve the technical problems by the following technical scheme:

the water seal overflow water recycling device comprises a process deaerator and a first-stage water seal barrel connected through an overflow pipeline; the primary water seal barrel is connected with the secondary water seal barrel through a primary water seal overflow pipeline; the upper end of the secondary water seal barrel is connected with a secondary water seal overflow pipeline; the secondary water seal overflow pipeline is connected with the drainage expansion tank through a water seal overflow water recycling pipeline.

Preferably, a water seal overflow water recycling hand valve A, a drain valve, a water seal overflow pipeline liquid draining and draining hand valve B are sequentially arranged on the water seal overflow water recycling pipeline from the secondary water seal overflow pipeline to the drain expansion tank.

Preferably, the lower end pipelines of the primary water seal barrel and the secondary water seal barrel are connected with a water seal overflow water release pipeline; the water seal overflow water discharge pipeline is connected with the secondary water seal overflow pipeline through a water seal overflow water discharge valve.

Preferably, one side of the primary water seal barrel is also connected with a water seal water supplementing pipeline; and a water seal water supplementing valve is arranged on the water seal water supplementing pipe.

Preferably, the hydrophobic expansion tank is connected with a hydrophobic expansion tank valve pipeline.

Preferably, the overflow pipeline is directly inserted into the bottom of the primary water seal barrel; the primary overflow pipeline is inserted into the bottom of the secondary water seal barrel.

Through the technical scheme, the utility model has the following beneficial effects:

1. the water seal is characterized in that the water seal pressure is maintained by continuously supplementing desalted water, excessive desalted water overflows to the site to cause water resource waste, meanwhile, the overflowed water is discharged to a sewage treatment system, and the sewage treatment load is increased.

2. The water seal overflow water overflows to the site to form a humid environment, and can cause corrosion of field equipment for a long time.

3. After the water seal overflow water is recycled, the sewage load is reduced, the operation elasticity of sewage treatment is increased, and certain environmental protection benefits are achieved.

4. The water seal overflow water is desalted water, and the utility model can realize recovery of desalted water of 3 tons per hour, and the annual economic benefit is about 9 yuan.

5. The process deoxidization system water seal overflow water treatment and condensed gas type compressor turbine condensate system belongs to the field of coal chemical industry, and simultaneously, the water seal overflow water is recycled, so that the sewage treatment burden is lightened, the operation elasticity of the sewage treatment is increased, and favorable conditions are created for the operation of environmental protection facilities, so that the process belongs to the field of environmental protection.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model

Numbering in the figures: 1-process deaerator, 2-water seal water supplementing pipeline, 3-water seal water supplementing valve, 4-primary water seal barrel, 5-secondary water seal barrel, 6-water seal overflow water discharging pipeline, 7-water seal overflow water discharging valve, 8-water seal overflow water recycling manual valve A, 9-drain valve, 10-water seal overflow water recycling pipeline, 11-water seal overflow water recycling manual valve B, 12-water seal overflow pipeline liquid draining and guiding pipeline, 13-water drain expansion tank, 14-water drain expansion tank valve, 15-secondary water seal overflow pipeline, 16-overflow pipeline, 17-primary water seal overflow pipeline

Description of the embodiments

The water seal overflow water recycling device shown in fig. 1 comprises a process deaerator 1, a water seal water supplementing pipeline 2, a water seal water supplementing valve 3, a primary water seal barrel 4, a secondary water seal barrel 5, a water seal overflow water discharging pipeline 6, a water seal overflow water discharging valve 7, a water seal overflow water recycling hand valve A8, a drain valve 9, a water seal overflow water recycling pipeline 10, a water seal overflow water recycling hand valve B11, a water seal overflow pipeline liquid draining guide shower 12, a drain expansion tank 13, a drain expansion tank valve 14, a secondary water seal overflow pipeline 15, an overflow pipeline 16 and a primary water seal overflow pipeline 17.

The process deaerator 1 is connected with an overflow pipeline 16; the overflow pipeline 16 is directly inserted into the bottom of the primary water seal barrel 4; the primary water seal cylinder 4 is provided with a primary overflow pipeline 17; the primary overflow pipeline 17 is inserted into the bottom of the secondary water seal barrel 5; the secondary water seal 5 is provided with a secondary overflow pipeline 15; the secondary overflow pipeline 15 is provided with a water seal overflow water discharge valve 7; the overflow pipeline 15 is connected with the water seal overflow water recycling pipeline 10; the water seal overflow water recycling pipeline 10 is provided with a water seal overflow water recycling hand valve A8, a drain valve 9, a shower guide valve 12 and a water seal overflow water recycling hand valve B11; the overflow pipeline 10 is connected with a drainage expansion tank 13; the primary water seal barrel 4 is provided with a water seal water supplementing pipeline 2; the water seal supplementing pipeline 2 is provided with a water seal supplementing valve 3.

The operation principle of the utility model is as follows:

during normal operation, the primary water seal water supplementing valve 3 is opened to supplement water to the primary water seal barrel 4, when the primary water seal barrel 4 is full of liquid, desalted water overflows to the secondary water seal barrel through the primary overflow pipeline 17, and when the secondary water seal barrel 5 is full of liquid, desalted water overflows to the field sewage disposal system through the secondary overflow pipeline.

Firstly, closing the water seal overflow water discharge valve 7 on the secondary water seal overflow pipeline 15 to enable the secondary water seal overflow pipeline 15 to be filled with desalted water.

And opening a water seal overflow water recycling manual valve A8 on the water seal overflow water recycling pipeline 10 to fill water into the water seal overflow water pipeline, discharging gas in the pipeline, and preventing the influence on the vacuum degree of the steam turbine.

When the water seal overflow water pipeline 10 is fully filled with water, the hand valve B11 for water seal overflow water recovery on the water seal overflow water recovery pipeline is slowly opened, desalted water in the water seal overflow pipeline 15 is automatically recovered into the drainage expansion tank 13 through the level difference and the pressure difference, and water seal overflow water recovery is realized.

The drain valve 9 is arranged on the water seal overflow water recycling pipeline 10 to prevent the water seal overflow water from being too small, and air is strung into the drain expansion tank 13, so that the vacuum degree of the steam turbine is reduced.

The utility model solves the problem of water resource waste caused by overflow of the water seal overflow water, and simultaneously solves the problem that the overflow water forms a moist environment on site, thereby avoiding equipment corrosion.

Claims

1. The water seal overflow water recycling device is characterized by comprising a process deaerator (1) and a primary water seal barrel (4) connected through an overflow pipeline (16); the primary water seal barrel (4) is connected with the secondary water seal barrel (5) through a primary water seal overflow pipeline (17); the upper end of the secondary water seal barrel (5) is connected with a secondary water seal overflow pipeline (15); the secondary water seal overflow pipeline (15) is connected with the drainage expansion tank (13) through a water seal overflow water recycling pipeline (10).

2. The water seal overflow water recycling device according to claim 1, wherein a water seal overflow water recycling hand valve A (8), a drain valve (9), a water seal overflow pipeline liquid draining and draining hand valve (12) and a water seal overflow water recycling hand valve B (11) are sequentially arranged on the water seal overflow water recycling pipeline (10) from the secondary water seal overflow pipeline (15) to the drain expansion tank (13).

3. The water seal overflow water recycling device according to claim 1 or 2, characterized in that the lower end pipelines of the primary water seal barrel (4) and the secondary water seal barrel (5) are connected with a water seal overflow water discharge pipeline (6); the water seal overflow water discharge pipeline (6) is connected with the secondary water seal overflow pipeline (15) through a water seal overflow water discharge valve (7).

4. The water seal overflow water recycling device according to claim 3, wherein one side of the primary water seal barrel (4) is also connected with a water seal water supplementing pipeline (2); the water seal water supplementing pipeline (2) is provided with a water seal water supplementing valve (3).

5. The water seal overflow water recycling device according to claim 1 or 2, wherein the drain expansion tank (13) is connected with a drain expansion tank valve (14) pipeline.

6. The water seal overflow water recycling device according to claim 1 or 2, characterized in that the overflow line (16) is directly inserted into the bottom of the primary water seal barrel (4); the primary water seal overflow pipeline (17) is inserted into the bottom of the secondary water seal barrel (5).