CN212902847U

CN212902847U - MGGH pressure drop difference system during operation

Info

Publication number: CN212902847U
Application number: CN202020431965.7U
Authority: CN
Inventors: 杨飞
Original assignee: Hunan Xiangtan Power Generation Co ltd
Current assignee: Hunan Xiangtan Power Generation Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-04-06
Anticipated expiration: 2030-03-30

Abstract

The utility model provides an MGGH falls differential pressure system in operation relates to MGGH and falls differential pressure system technical field, can be used to wash the ammonium bisulfate of adhesion on MGGH tube bank, reduces MGGH pressure differential. The utility model relates to a MGGH falls differential pressure system is including installing and be provided with a plurality of flanges and valve on MGGH tube bank and can stretch into the wash tub pipe in the MGGH tube bank through the flange hole. The MGGH differential pressure reduction system in operation is low in modification and operation cost, capable of reducing the MGGH differential pressure, simple and reliable in equipment and capable of meeting the requirement of reducing the MGGH differential pressure without shutdown flushing conditions.

Description

MGGH pressure drop difference system during operation

Technical Field

The utility model relates to a MGGH falls differential pressure system, concretely relates to MGGH falls differential pressure system in operation.

Background

Tube bank formula gas heater heats chimney exit flue gas more than 72 ℃ through the heat transfer, reach and improve exhaust gas temperature, eliminate chimney row mouth white steam purpose simultaneously, but in the unit long period operation, because of the super low row's demand of denitration, it leads to the generation of ammonium bisulfate to spout ammonia escape, the adhesion is on MGGH tube bank, it leads to MGGH differential pressure to rise to accumulate in the day and night, the unit need maintain the operation, can not shut down the washing, influence the stable safe operation of unit, increase the system energy consumption simultaneously.

In the prior art, the steam soot blowing technology is mainly adopted, but the steam blowing effect is poor because the ammonium bisulfate is a viscous substance, and the blowing pressure is reduced because the steam soot blowing pipeline and the sealing ring are overlooked and leaked, so that the blowing effect is poor; under continuous low load, the insufficient purge pressure is also the cause of poor purge capability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an MGGH falls differential pressure system in service through set up flange and valve on MGGH tube bank, adopts protractile to stretch into wash pipe and realizes washing the material in the flue. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

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

an MGGH pressure drop difference system in operation comprises a plurality of flanges, valves and flushing water pipes, wherein the flanges and the valves are arranged on an MGGH pipe bundle, and the flushing water pipes can extend into the MGGH pipe bundle through flange holes; wherein:

optionally or preferably, each of said flanges is mounted to the MGGH via a flange aperture;

alternatively or preferably, the flange is mounted on a flange aperture;

alternatively or preferably, the valve is mounted on a flange;

optionally or preferably, the flushing water pipe comprises a main flushing pipe and at least two branch flushing pipes;

optionally or preferably, each main flushing pipe is connected with a branch flushing pipe through a connecting hose;

optionally or preferably, each flushing branch pipe is further connected to the flushing main pipe through a movable connection.

Alternatively or preferably, the flush water pipe is connected to a flush water source through a pipe.

Alternatively or preferably, the flush pipe may be accessible to the inside of the MGGH tube bundle for flushing through a valve switch.

Alternatively or preferably, the flush water pipe is connected to a demister flush water pump outlet header pipe by a water pipe.

Alternatively or preferably, the flange is welded to the MGGH tube bundle.

Based on the technical scheme, the following technical effects can be generated:

the embodiment of the utility model provides a pair of MGGH falls differential pressure system in service is applicable to and washs the ammonium bisulfate that adheres in the MGGH tube bank. The utility model relates to an MGGH falls differential pressure system in service is through setting up flange and valve on MGGH tube bank, adopts protractile to stretch into wash pipe and realizes washing the material in the flue to solve the technical problem that the ammonium bisulfate that adheres in the MGGH tube bank is difficult to clear away. The utility model discloses reform transform simply, low cost, cleaning performance are showing and can effectively reduce the MGGH differential pressure, and can satisfy the unit and do not possess the shut down condition of washing and descend MGGH differential pressure requirement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view (the included angle A is 90 °) of the present invention;

fig. 2 is a schematic view of the structure of the flushing water pipe of the present invention (the included angle a is 180 °);

fig. 3 is a schematic side view of an MGGH tube bundle of the present invention;

in the figure: 1. an MGGH tube bundle; 2. a flange; 3. a valve; 4. flushing the water pipe; 4-1, washing the main pipe; 4-2, connecting a hose; 4-3, movably connecting; 4-4, washing the branch pipe; A. the angle between the main flushing pipe and the branch flushing pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1-3:

the utility model provides an MGGH differential pressure reduction system in operation, which comprises a plurality of flanges 2 and valves 3 which are arranged on an MGGH tube bundle 1, and a flushing water pipe 4 which can extend into the MGGH tube bundle 1 through a flange hole; wherein:

each flange 2 is installed on the MGGH pipe bundle 1 through a flange hole 1-1;

the flange 2 is arranged on the flange hole 1-1;

the valve 3 is arranged on the flange 2;

the flushing water pipe 4 comprises a flushing main pipe 4-1 and at least two flushing branch pipes 4-4;

each flushing main pipe 4-1 is respectively connected with a flushing branch pipe 4-3 through a connecting hose 4-2;

each flushing branch pipe 4-4 is also connected with the flushing main pipe 4-1 through a movable connection 4-3.

As an alternative embodiment, the flushing water pipe 4 is connected with a flushing water source through a pipeline.

As an alternative embodiment, the flush water pipe 4 can be opened or closed by a valve to flush the inside of the MGGH tube bundle 1.

As an alternative embodiment, the flushing water pipe 4 is connected with an outlet mother pipe of a flushing water pump of the demister through a water pipe.

As an alternative embodiment, the flange 2 is welded to the MGGH tube bundle 1.

As an alternative embodiment, the flushing branch pipe 4-3 can adjust the included angle A between the flushing branch pipe 2-3 and the flushing branch pipe through a movable connecting piece 4-4.

As an alternative embodiment, the movable range of the included angle A between the flushing branch pipe 4-3 and the flushing main pipe 4-1 is 90-180 degrees.

As an alternative embodiment, the size of the included angle A can be conveniently adjusted by adjusting the connecting hose 4-2.

The utility model relates to an operation MGGH falls differential pressure system's working process as follows: connecting an external water source pipe, opening a valve 3, extending into a flushing water pipe, enabling water flow to enter a flushing water pipe 4, and respectively entering flushing branch pipes 4-3 through a flushing main pipe 4-1 and connecting hoses 4-2 to flush ammonium bisulfate adhered in the MGGH pipe bundle; the movable range of the included angle A can be adjusted by adjusting the movable connecting piece 4-4, and the inner wall can be washed in a wider range.

Claims

1. An MGGH falls differential pressure system in operation, its characterized in that: comprises a plurality of flanges (2), valves (3) and a flushing water pipe (4) which is arranged on an MGGH tube bundle (1) and can extend into the MGGH tube bundle (1) through a flange hole; wherein:

each flange (2) is installed on the MGGH pipe bundle (1) through a flange hole (1-1);

the flange (2) is arranged on the flange hole (1-1);

the valve (3) is arranged on the flange (2);

the flushing water pipe (4) comprises a flushing main pipe (4-1) and at least two flushing branch pipes (4-4);

each flushing main pipe (4-1) is respectively connected with the flushing branch pipes (4-4) through connecting hoses (4-2);

each flushing branch pipe (4-4) is also connected with the flushing main pipe (4-1) through a movable connection (4-3).

2. An operating MGGH pressure drop differential system according to claim 1, wherein: the flushing water pipe (4) is connected with a flushing water source through a pipeline.

3. An operating MGGH pressure drop differential system according to claim 2, wherein: the flushing water pipe (4) can enter the MGGH pipe bundle (1) through a valve switch for flushing.

4. An operating MGGH pressure drop differential system according to claim 3, wherein: the flushing water pipe (4) is connected with an outlet main pipe of a flushing water pump of the demister through a water pipe.

5. An operating MGGH pressure drop differential system according to claim 4, wherein: the flange (2) is welded on the MGGH tube bundle (1).