CN219328073U - Device for reducing deaerator exhaust - Google Patents

Abstract

The utility model provides a device for reducing exhaust steam of a deaerator, which comprises a heat exchanger, wherein a water inlet of the heat exchanger is connected with a water supply pipe through a water inlet pipe, the water supply pipe supplies water to the deaerator and the heat exchanger, a first valve is arranged on the water inlet pipe, a steam exhaust port of the deaerator is connected with a steam inlet of the heat exchanger through a steam exhaust pipe, a second valve is arranged on the steam exhaust pipe, a water outlet of the heat exchanger is connected with the water supply pipe through a pipeline, the steam exhaust port of the heat exchanger is connected with the steam inlet of a water-steam separation box through a pipeline, a plurality of mesh plates are arranged in the water-steam separation box, a steam exhaust pipeline is arranged at the top of the water-steam separation box, and the bottom of the water-steam separation box is connected with a water tank through a connecting pipe. The device can fully reduce the discharge of steam, carries out recycle to the steam of discharge.

Description

Device for reducing deaerator exhaust

Technical Field

The utility model relates to the field of related equipment of deaerators of boilers, in particular to a device for reducing exhaust steam of deaerators.

Background

Steam boilers play a vital role in the production processes of concentration, bleaching, drying and the like in the papermaking industry. The deaerator is necessary equipment for boiler water treatment, and has the function of separating out dissolved oxygen, carbon dioxide and other corrosive gases which are dissolved in softened water and are harmful to the equipment, so that the electrochemical corrosion of boiler pipelines and boiler drums is avoided. The deaerator discharges a large amount of steam at the steam outlet in the production process, and direct emptying causes heat waste and water resource waste. The water vapor recovery device of the boiler water supply deaerator disclosed in CN208617412U can recover the water vapor exhausted by the deaerator, but the utilization of the water vapor is insufficient.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a device for reducing exhaust steam of a deaerator, which can fully reduce the exhaust of steam and recycle the exhaust steam.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a reduce device of deaerator exhaust, includes the heat exchanger, the water inlet of heat exchanger passes through inlet tube and water supply pipe connection, and the delivery pipe is supplied water deaerator and heat exchanger, is equipped with first valve on the inlet tube, and the exhaust port of deaerator passes through the exhaust pipe to be connected with the steam inlet of heat exchanger, is equipped with the second valve on the exhaust pipe, and the delivery port of heat exchanger passes through the pipeline to be connected with the delivery pipe, and the exhaust port of heat exchanger passes through the pipeline to be connected with the steam inlet of steam-water separation case, is equipped with a plurality of mesh plates in the steam-water separation case, and steam-water separation case top is equipped with the exhaust pipeline, and the bottom is connected with the water tank through the connecting pipe.

In the preferred scheme, the water tank is connected with the water supply pipe through the water return pipe and the water pump, and the connecting end of the water return pipe and the water supply pipe is close to the connecting end of the water supply pipe and the deaerator.

In the preferred scheme, the condensate drain outlet of the heat exchanger is connected with the water inlet of the water-vapor separation tank through a condensate pipe, and the water inlet of the water-vapor separation tank is positioned below the steam inlet of the water-vapor separation tank.

In the preferred scheme, the steam outlet of the deaerator is connected with the steam inlet of the water-steam separation box through a second steam outlet pipe, and a third valve is arranged on the second steam outlet pipe.

In a preferred scheme, the mesh plate is of an inverted V-shaped structure.

In the preferred scheme, the orifice plate upside is equipped with a plurality of guiding gutter, and the guiding gutter is unanimous with the inclination of orifice plate, and water vapor separation case inner wall is equipped with the water drainage tank that corresponds with the guiding gutter.

According to the device for reducing the exhaust steam of the deaerator, provided by the utility model, the steam exhausted by the deaerator is not directly exhausted, but is firstly exhausted into the heat exchanger through the steam exhaust pipe to cool and condense, the water supply pipe provides cooling water for the heat exchanger, after heat exchange, the cooling water is heated by utilizing the waste heat of the steam, the heated cooling water flows back into the water supply pipe to supply water for the deaerator, the heat exchanged steam is conveyed into the water-steam separation box again, the steam is blocked through the mesh plate, the separation of the steam and the water is facilitated, meanwhile, the exhausted steam can be subjected to pressure reduction and exhausted, the emission of the steam is reduced, the water resource is utilized, and the water resource waste is reduced.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples of implementation:

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

FIG. 2 is a schematic view of the installation of a mesh panel;

FIG. 3 is a schematic view of the internal structure of the water-vapor separator tank;

FIG. 4 is a schematic view of a preferred mesh panel;

in the figure: the heat exchanger 1, inlet tube 2, delivery pipe 3, deaerator 4, first valve 5, exhaust pipe 6, second exhaust pipe 7, second valve 8, steam-water separation case 9, mesh board 10, exhaust pipe 11, connecting pipe 12, water tank 13, wet return 14, water pump 15, third valve 16, condensate pipe 17, water drainage tank 901, guiding gutter 1001.

Detailed Description

As shown in fig. 1, a device for reducing deaerator exhaust steam comprises a heat exchanger 1, the water inlet of the heat exchanger 1 is connected with a water supply pipe 3 through a water inlet pipe 2, the water supply pipe 3 supplies water to the deaerator 4 and the heat exchanger 1, namely, water in the water supply pipe 3 is used as cooling water of the heat exchanger 1, a first valve 5 is arranged on the water inlet pipe 2, the exhaust steam outlet of the deaerator 4 is connected with the steam inlet of the heat exchanger 1 through a steam exhaust pipe 6, a second valve 8 is arranged on the steam exhaust pipe 6, the water outlet of the heat exchanger 1 is connected with the water supply pipe 3 through a pipeline, the steam outlet of the heat exchanger 1 is connected with the steam inlet of a steam separation box 9 through a pipeline, a plurality of mesh plates 10 are arranged in the steam separation box 9, through holes are uniformly distributed on the mesh plates 10, the top of the steam separation box 9 is provided with a steam exhaust pipeline 11, and the bottom is connected with a water tank 13 through a connecting pipe 12.

The deaerator 4 exhaust steam is not directly discharged, but is firstly discharged into the heat exchanger 1 through the steam discharge pipe 6 to cool and condense, the water supply pipe 3 supplies cooling water for the heat exchanger 1, after heat exchange, the waste heat of the steam is utilized to heat the cooling water, the heated cooling water flows back into the water supply pipe 3 to supply water for the deaerator 4, the heat exchanged steam is conveyed into the water-vapor separation box 9 again, a large amount of moisture is mixed in the steam, the steam is blocked through the mesh plate 10, the separation of the steam and the water is facilitated, meanwhile, the pressure reduction discharge of the exhaust steam is carried out, and the discharge amount of the steam is reduced.

Preferably, the water tank 13 is connected with the water supply pipe 3 through a water return pipe 14 and a water pump 15, and the connection end of the water return pipe 14 and the water supply pipe 3 is close to the connection end of the water supply pipe 3 and the deaerator 4.

The water separated by the water-vapor separation box 9 flows downwards to the water tank 13 for storage, and is conveyed to the water supply pipe 3 again for reuse through the water return pipe 14 and the water pump 15, thereby being beneficial to the recovery of water resources.

Preferably, the condensate drain outlet of the heat exchanger 1 is connected with the water inlet of the water-vapor separation tank 9 through a condensate pipe 17, and the water inlet of the water-vapor separation tank 9 is positioned below the steam inlet of the water-vapor separation tank 9.

The condensed water of the heat exchanger 1 is not directly discharged, but is conveyed to the water-vapor separation tank 9, on the one hand, the steam entrained in the condensed water overflows sufficiently, and on the other hand, the condensed water is collected in the water tank 13 for reuse.

The steam outlet of the deaerator 4 is connected with the steam inlet of the water-steam separation box 9 through a second steam outlet pipe 7, and a third valve 16 is arranged on the second steam outlet pipe 7.

When the heat exchanger 1 fails or needs to be shut down for maintenance, the second valve 8 on the steam exhaust pipe 6 is closed, the third valve 16 on the second steam exhaust pipe 7 is opened, and steam exhausted by the deaerator 4 is conveyed to the water-steam separation box 9 for separation through the second steam exhaust pipe 7.

Preferably, as shown in fig. 2, the mesh plate 10 has an inverted "V" shape. The mesh plate 10 is arranged into an inverted V-shaped structure, so that water separated and condensed on the mesh plate 10 can flow downwards conveniently, and the water can be collected in the water-vapor separation box 9.

Further, a plurality of diversion trenches 101 are arranged on the upper side of the mesh plate 10, the diversion trenches 101 are consistent with the inclination direction of the mesh plate 10, and a drainage trench 901 corresponding to the diversion trenches 101 is arranged on the inner wall of the water-steam separation box 9.

By providing the diversion trench 101, the discharge of the water separated and condensed on the mesh plate 10 is improved, and the water content in the steam is further reduced.

The device supplies water to the heat exchanger 1 and the deaerator 4 through the water supply pipe 3 at the same time, and as cooling water of the heat exchanger 1, steam discharged by the deaerator 4 exchanges heat with the cooling water, and the cooling water after heat exchange is conveyed to the water supply pipe 3 again to supply water to the deaerator 4, so that heat is fully utilized, and the steam is cooled and condensed at the same time, so that the steam emission is reduced; the steam through heat transfer carries to steam-water separation case 9 and carries out separation once more of steam and water, can reduce the water content in the steam, can further condense steam simultaneously, and the steam volume carries out further reduction, can reduce the pressure and discharge to the exhaust steam, reduces the emission of steam.

The device can reduce the discharge of steam, to the heat make full use of steam, utilizes the water resource simultaneously, reduces the water resource waste.

Claims (6)

1. The utility model provides a device for reducing deaerator exhaust, includes heat exchanger (1), its characterized in that: the water inlet of heat exchanger (1) is connected with delivery pipe (3) through inlet tube (2), delivery pipe (3) are supplied water to deaerator (4) and heat exchanger (1), be equipped with first valve (5) on inlet tube (2), the steam outlet of deaerator (4) is connected with the steam inlet of heat exchanger (1) through exhaust pipe (6), be equipped with second valve (8) on exhaust pipe (6), the delivery port of heat exchanger (1) is connected with delivery pipe (3) through the pipeline, the steam outlet of heat exchanger (1) is connected with the steam inlet of steam separation case (9) through the pipeline, be equipped with a plurality of mesh plates (10) in steam separation case (9), steam separation case (9) top is equipped with steam exhaust pipe (11), the bottom is connected with water tank (13) through connecting pipe (12).

2. The apparatus for reducing deaerator exhaust as set forth in claim 1, wherein: the water tank (13) is connected with the water supply pipe (3) through the water return pipe (14) and the water pump (15), and the connecting end of the water return pipe (14) and the water supply pipe (3) is close to the connecting end of the water supply pipe (3) and the deaerator (4).

3. The apparatus for reducing deaerator exhaust as set forth in claim 1, wherein: the condensate water outlet of the heat exchanger (1) is connected with the water inlet of the water-vapor separation box (9) through a condensate water pipe (17), and the water inlet of the water-vapor separation box (9) is positioned below the steam inlet of the water-vapor separation box (9).

4. The apparatus for reducing deaerator exhaust as set forth in claim 1, wherein: the steam outlet of the deaerator (4) is connected with the steam inlet of the water-steam separation box (9) through a second steam outlet pipe (7), and a third valve (16) is arranged on the second steam outlet pipe (7).

5. The apparatus for reducing deaerator exhaust as set forth in claim 1, wherein: the mesh plate (10) is of an inverted V-shaped structure.

6. The apparatus for reducing deaerator exhaust as set forth in claim 1, wherein: the water-vapor separation device is characterized in that a plurality of diversion trenches (1001) are formed in the upper side of the mesh plate (10), the diversion trenches (1001) are consistent with the inclination direction of the mesh plate (10), and drainage trenches (901) corresponding to the diversion trenches (1001) are formed in the inner wall of the water-vapor separation box (9).

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