CN218846112U

CN218846112U - High-pressure drainage water recovery device

Info

Publication number: CN218846112U
Application number: CN202320193722.8U
Authority: CN
Inventors: 徐卫军; 李通
Original assignee: Anji Wangneng Regeneration Resource Utilization Co ltd
Current assignee: Anji Wangneng Regeneration Resource Utilization Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-11
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a high-pressure drainage water recovery device, which comprises a fixed-row flash tank (2) and a drainage expansion tank (3) which are connected with a drainage water pipe (1) in parallel, wherein the drainage expansion tank (3) is connected with a drainage tank (4), and a reflux cooling pipe (5) and a drainage pump (6) are arranged between the drainage expansion tank (3) and the drainage tank (4); the drainage expansion tank (3) comprises an expansion tank body (7), a water inlet (8) connected with the drainage water pipe (1) is formed in the middle of the upper end of the expansion tank body (7), a double-layer cooling external member (9) is arranged in the water inlet (8), and a cooling inlet (10) connected with the backflow cooling pipe (5) is formed in the upper portion of the double-layer cooling external member (9). The utility model has the characteristics of can effectively improve noise reduction.

Description

High-pressure drainage water recovery device

Technical Field

The utility model relates to a boiler drainage system, especially a high pressure drainage water recovery unit.

Background

In thermal power plants, boilers are the most important production equipment. The boiler is operated at the same time in the boiler and the furnace, after water enters the boiler, the boiler heating surface in the steam-water system transfers the absorbed heat to water, so that the water is heated into hot water with certain temperature and pressure or generated steam, and the hot water is led out for application. In the process, the drainage water of the boiler is discharged and treated by a boiler drainage water recovery system; however, in the existing boiler drainage water recovery system, the boiler drainage water is directly discharged into the fixed-discharge flash tank, and the noise is large. In order to solve the problems, research and development personnel start to adopt a mode of combining a fixed-row flash tank and a drainage flash tank, and select corresponding discharge positions according to different vapor-phase liquid-phase proportions in substances in a drainage water pipe so as to reduce noise; the mode can reduce the noise of the fixed-displacement flash tank during working, but the drainage expansion tank still has certain noise in the cooling process; the overall noise reduction effect is not very ideal. Therefore, the prior art has the problem of unsatisfactory noise reduction effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high pressure drainage water recovery unit. The utility model has the characteristics of can effectively improve noise reduction.

The technical scheme of the utility model: the high-pressure drainage water recovery device comprises a fixed-discharge flash tank and a drainage expansion tank which are connected with a drainage water pipe in parallel, wherein the drainage expansion tank is connected with a drainage tank, and a reflux cooling pipe and a drainage pump are arranged between the drainage expansion tank and the drainage tank; the water draining expansion tank comprises an expansion tank body, a water inlet connected with the drainage water pipe is formed in the middle of the upper end of the expansion tank body, a double-layer cooling external member is arranged in the water inlet, and a cooling inlet connected with the backflow cooling pipe is formed above the double-layer cooling external member.

In the aforementioned high-pressure drain water recovery device, the double-layer cooling kit includes an inner kit and an outer kit, a cooling cavity is provided between the inner kit and the outer kit, and the cooling inlet is located at the upper end of the cooling cavity; a group of spray nozzles distributed in an annular shape are arranged below the cooling cavity, and spray outlets of the spray nozzles are distributed in an inclined manner towards the circle center.

In the aforementioned high-pressure drain water recovery device, a group of concentrically distributed annular cooling pipes is further disposed in the expansion tank, a conveying pipe is disposed between adjacent annular cooling pipes, a spraying pipe is further disposed between adjacent conveying pipes, and a spraying port is disposed on the spraying pipe; the annular cooling pipe on the outer side is connected with the inner wall of the expansion box body through a bracket; and a branch pipe connected with the reflux cooling pipe is arranged on the annular cooling pipe on the outer side.

Compared with the prior art, the utility model discloses a set up the double-deck cooling external member that links to each other with the backflow cooling pipe in the water inlet of hydrophobic expansion tank for carry out precooling to hydrophobic, then through the spray nozzle that double-deck cooling external member bottom slope distributes, carry out further spray cooling to hydrophobic, thereby can effectual improvement cooling effect and cooling rate, reduce the noise that produces in the hydrophobic expansion tank cooling process, improve noise reduction. Additionally, the utility model discloses still through the annular cooling tube that arranges a set of annular concentric circles and distribute in the expansion tank body, arrange conveying water pipe and shower between adjacent annular cooling tube, enlarge cooling range to improvement cooling effect that can be further, and then can the noise reduction, improve the noise reduction effect. To sum up, the utility model has the characteristics of can effectively improve noise reduction.

Drawings

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

FIG. 2 is a structural view of a hydrophobic expansion tank;

FIG. 3 is a top view of an annular cooling tube.

The labels in the figures are: 1-drainage water pipe, 2-fixed-row flash tank, 3-drainage expansion tank, 4-drainage tank, 5-reflux cooling pipe, 6-drainage pump, 7-expansion tank body, 8-water inlet, 9-double-layer cooling kit, 10-cooling inlet, 901-inner kit, 902-outer kit, 903-cooling cavity, 904-spray nozzle, 11-annular cooling pipe, 12-conveying pipe, 13-spray pipe and 14-branch pipe.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. The high-pressure drained water recovery device is shown in figures 1-3 and comprises a fixed-discharge flash tank 2 and a drain expansion tank 3 which are connected with a drained water pipe 1 in parallel, wherein the drain expansion tank 3 is connected with a drain tank 4, and a reflux cooling pipe 5 and a drain pump 6 are arranged between the drain expansion tank 3 and the drain tank 4; the hydrophobic expansion tank 3 comprises an expansion tank body 7, a water inlet 8 connected with the drainage water pipe 1 is formed in the middle of the upper end of the expansion tank body 7, a double-layer cooling external member 9 is arranged in the water inlet 8, and a cooling inlet 10 connected with the backflow cooling pipe 5 is formed above the double-layer cooling external member 9.

The double-layer cooling kit 9 comprises an inner kit 901 and an outer kit 902, a cooling cavity 903 is arranged between the inner kit 901 and the outer kit 902, and a cooling inlet 10 is positioned at the upper end of the cooling cavity 903; a group of annularly distributed spray nozzles 904 are arranged below the cooling cavity 903, and spray outlets of the spray nozzles 904 are distributed in an inclined manner towards the center of a circle.

A group of concentric annular cooling pipes 11 are arranged in the expansion box body 7, conveying pipes 12 are arranged between the adjacent annular cooling pipes 11, spraying pipes 13 are arranged between the adjacent conveying pipes 12, and spraying ports are formed in the spraying pipes 13; the annular cooling pipe 11 at the outer side is connected with the inner wall of the expansion box body 3 through a bracket; the outer annular cooling pipe 11 is provided with a branch pipe 14 connected with the return cooling pipe 5.

The upper end of the expansion box body is also provided with a safety air valve.

The hydrophobic expansion tank is vertically distributed, and the main body of the hydrophobic expansion tank is of a cylindrical structure.

The inner sleeve member 901 and the outer sleeve member 902 both comprise a connecting pipe 911, and a conical flaring 912 is arranged below the connecting pipe 911.

The water drainage pipe comprises a boiler water drainage pipe and a steam engine water drainage pipe.

A water flow parameter detector is arranged in the drainage water pipe and connected with an electromagnetic valve; the electromagnetic valves are respectively positioned at the joints of the drainage water pipe, the fixed-discharge flash tank and the drainage expansion tank. The water flow parameter detector is used for detecting the composition of substances in the drainage pipe and selecting corresponding discharge positions according to different vapor-liquid phase proportions. Thus, noise of the fixed-row flash tank can be reduced.

The spray pipe is communicated with the annular cooling pipes on the inner side and the outer side.

Cooling the hydrophobic expansion tank: the solenoid valve of hydrophobic expansion tank department is opened, and hydrophobic water drainage is discharged into the water inlet of hydrophobic expansion tank upper end through the drainage pipe, and it is internal to flow into the expansion tank from the internal member of double-deck cooling external member, carries out the heat exchange with annular cooling tube, conveyer pipe and the shower that is located the expansion tank internal, accomplishes the hydrophobic quick cooling of high pressure, the production of noise abatement.

When the high-pressure drain water flows through the inner sleeve, the high-pressure drain water and the cooling drain water in the cooling cavity can perform first heat exchange, and after heat exchange, the cooling drain water is sprayed out from the spraying nozzle of the cooling cavity and performs second heat exchange with the high-pressure drain water.

The reflux cooling pipe refluxes cooling drainage from the drainage box to the cooling inlet through the drainage pump, the inlet branch pipe refluxes to each annular cooling pipe, the conveying pipe and the spraying pipe, and partial cooling drainage is sprayed out from the spraying port and is cooled by contacting with high-pressure drainage.

Claims

1. The high-pressure drainage water recovery device comprises a fixed-discharge flash tank (2) and a drainage expansion tank (3) which are connected with a drainage water pipe (1) in parallel, wherein the drainage expansion tank (3) is connected with a drainage tank (4), and a reflux cooling pipe (5) and a drainage pump (6) are arranged between the drainage expansion tank (3) and the drainage tank (4); the method is characterized in that: the drainage expansion tank (3) comprises an expansion tank body (7), a water inlet (8) connected with the drainage water pipe (1) is formed in the middle of the upper end of the expansion tank body (7), a double-layer cooling external member (9) is arranged in the water inlet (8), and a cooling inlet (10) connected with the backflow cooling pipe (5) is formed in the upper portion of the double-layer cooling external member (9).

2. The high-pressure drain water recovery device according to claim 1, wherein: the double-layer cooling kit (9) comprises an inner kit (901) and an outer kit (902), a cooling cavity (903) is arranged between the inner kit (901) and the outer kit (902), and a cooling inlet (10) is positioned at the upper end of the cooling cavity (903); a group of spray nozzles (904) distributed in an annular shape are arranged below the cooling cavity (903), and spray outlets of the spray nozzles (904) are distributed in an inclined manner towards the circle center.

3. The high-pressure drain water recovery device according to claim 1, wherein: a group of concentric annular cooling pipes (11) are arranged in the expansion box body (7), conveying pipes (12) are arranged between the adjacent annular cooling pipes (11), spraying pipes (13) are arranged between the adjacent conveying pipes (12), and spraying openings are formed in the spraying pipes (13); the annular cooling pipe (11) at the outer side is connected with the inner wall of the expansion box body (7) through a bracket; a branch pipe (14) connected with the reflux cooling pipe (5) is arranged on the annular cooling pipe (11) at the outer side.