CN211452049U

CN211452049U - High-pressure blow washing device of rotary air preheater

Info

Publication number: CN211452049U
Application number: CN201922134328.3U
Authority: CN
Inventors: 寇鹏
Original assignee: Laicheng Power Plant Huadian International Power Co ltd
Current assignee: Laicheng Power Plant Huadian International Power Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-09-08
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to a rotary air preheater high pressure purging device, which comprises a plurality of medium conveying pipes arranged above an air preheater rotor in parallel, wherein the tail end of each medium conveying pipe is connected with a gun head, the plurality of gun heads are arranged along the radius direction of the air preheater rotor in sequence, and each gun head comprises a plurality of gun nozzles communicated with the medium conveying pipes; a pipe body support used for correspondingly mounting each medium conveying pipe is arranged above the air preheater rotor, each medium conveying pipe is in sliding connection with the corresponding pipe body support, and the relative positions of the medium conveying pipes and the pipe body supports are adjustable; one end of each medium conveying pipe, which is far away from the gun head, is connected with a conveying hose after being connected with a valve, and a plurality of conveying hoses are communicated with a common high-pressure medium conveying main pipe. Can keep high pressure, can reach good effect of blowing and washing, especially have good clearance effect to stubborn dirt.

Description

High-pressure blow washing device of rotary air preheater

Technical Field

The utility model relates to an air preheater cleaning equipment technical field especially relates to a rotation air preheater high pressure blasts device.

Background

In a thermal power plant, a rotary air preheater (air preheater for short) plays a role in transferring heat of smoke to wind. In order to ensure the normal heat transfer of the air preheater and the normal flow of smoke and wind, the rotor of the air preheater must be cleaned, so that the dust and dirt attached to the internal elements of the rotor need to be cleaned regularly.

At present, a common method is to use a low-pressure steam soot blower for blowing, and the cleaning mode has the defects of low pressure, insufficient blowing force and difficulty in blowing stubborn soot.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a rotation air preheater high pressure blasts device, can keep the high pressure, can reach good blast effect, especially have good effect of cleaing away to stubborn dirt.

The utility model is realized by the following technical scheme, a rotary air preheater high-pressure purging device is provided, which comprises a plurality of medium conveying pipes which are arranged above an air preheater rotor in parallel, the tail end of each medium conveying pipe is connected with a gun head, the plurality of gun heads are sequentially arranged along the radius direction of the air preheater rotor, and each gun head comprises a plurality of gun nozzles which are communicated with the medium conveying pipes; a pipe body support used for correspondingly mounting each medium conveying pipe is arranged above the air preheater rotor, each medium conveying pipe is in sliding connection with the corresponding pipe body support, and the relative positions of the medium conveying pipes and the pipe body supports are adjustable; one end of each medium conveying pipe, which is far away from the gun head, is connected with a conveying hose after being connected with a valve, and a plurality of conveying hoses are communicated with a common high-pressure medium conveying main pipe.

Preferably, a plurality of body supports are connected with common mounting bracket, and the mounting bracket is fixed connection with ground.

Preferably, the number of the medium conveying pipes above the rotor of the air preheater is 4, and the number of the pipe body supports corresponding to the medium conveying pipes is also 4.

Preferably, each pipe body support is provided with a T-shaped groove with one open end, each T-shaped groove consists of an upper accommodating groove and a lower guide groove which are communicated, the medium conveying pipe is positioned in the upper accommodating groove, and the gun mouths are positioned in the lower guide grooves and protrude out of the lower guide grooves.

The utility model has the advantages that:

1. when the rotary air preheater is used for blasting, because the high-pressure medium only flows through one medium conveying pipe at each time, the pressure drop amplitude is small, the high-pressure medium can be always sprayed out at high pressure, the impact force is strong, the good blasting effect can be achieved, and the rotary air preheater can be widely applied to the rotary air preheater of a thermal power plant.

2. The effective coverage of the running radius of the air preheater rotor is realized through the plurality of gun heads which are sequentially arranged along the radius direction of the air preheater rotor, and the cleaning dead angle is reduced to the greatest extent.

3. The medium conveying pipe and the gun nozzle are inserted into the T-shaped groove from the opening, and the inserting position can be adjusted according to the requirement of the cleaning position. And when the medium conveying pipe and the gun nozzle need to be replaced, the medium conveying pipe and the gun nozzle are directly drawn out from the T-shaped groove, so that the medium conveying pipe and the gun nozzle are convenient to replace.

4. Simple structure, low manufacturing cost, simple operation and high reliability. Due to the arrangement of the guide groove structure, the gun barrel and the gun nozzle can be conveniently drawn out and replaced.

Drawings

FIG. 1 is a schematic view of the top view structure of the utility model in use;

FIG. 2 is a schematic end view of the connection between the medium conveying pipe and the pipe body;

shown in the figure:

1. the air preheater rotor, 2, medium conveying pipe, 3, body support, 4, rifle head, 5, rifle mouth, 6, mounting bracket, 7, valve, 8, conveying hose, 9, high pressure medium conveying main pipe, 10, go up the holding tank, 11, lower guide slot.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1 and 2, the utility model discloses a set up a plurality of medium conveyer pipes 2 in air preheater rotor 1 top side by side, a rifle head 4 is all connected to every medium conveyer pipe 2's end, and a plurality of rifle heads 4 are arranged along air preheater rotor 1's direction of radius in proper order, and every rifle head 4 all includes a plurality of rifle mouths 5 with medium conveyer pipe 2 intercommunication, and the cleaning medium discharges through rifle mouth 5. And a pipe body support 3 used for correspondingly mounting each medium conveying pipe 2 is arranged above the air preheater rotor 1, each medium conveying pipe 2 is in sliding connection with the corresponding pipe body support 3, and the relative position of the medium conveying pipe 2 and the pipe body support 3 is adjustable. One end of each medium conveying pipe 2, which is far away from the gun head 4, is connected with a valve 7 and then is connected with a conveying hose 8, a plurality of conveying hoses 8 are communicated with a common high-pressure medium conveying main pipe 9, and the high-pressure medium conveyed by the high-pressure medium conveying main pipe 9 can be high-pressure steam or high-pressure water.

In this embodiment, the plurality of tubular supports 3 are connected to a common mounting frame 6, and the mounting frame 6 is fixedly connected to the ground.

In this embodiment, the number of the medium conveying pipes 2 above the air preheater rotor 1 is 4, and the number of the pipe supports 3 corresponding to the medium conveying pipes 2 is also 4.

In this embodiment, each pipe support 3 is provided with a T-shaped groove with an open end, the T-shaped groove is composed of an upper accommodating groove 10 and a lower guide groove 11 which are communicated with each other, the medium conveying pipe 2 is located in the upper accommodating groove 10, and the plurality of gun nozzles 5 are located in the lower guide groove 11 and protrude out of the lower guide groove 11. The medium conveying pipe 2 and the gun nozzle 5 are inserted into the T-shaped groove from the opening, and the insertion positions can be adjusted according to the requirement of the cleaning position.

This application has realized the effective cover to the operation radius of air preheater rotor 1 through a plurality of rifle heads 4 that arrange in proper order along 1 direction of radius of air preheater rotor, clean dead angle of furthest's reduction. The specific use steps are as follows: when the air preheater runs, the rotor rotates all the time, when the air preheater is cleaned, high-pressure media such as high-pressure steam or high-pressure water are introduced into the high-pressure medium conveying main pipe 9, a valve 7 on a medium conveying pipe 2 is opened firstly, the high-pressure media blow wash the rotor through a gun nozzle 5 of the medium conveying pipe 2, the rotor rotates for a certain number of turns, and the valve 7 is closed after the blow wash of the annular area is finished; in this way, the annular areas of flushing are superposed to cover the entire rotor until the valves 7 on all the media ducts 2 are opened and closed, and the flushing is completed. When the high-pressure medium is purged, the high-pressure medium only flows through one medium conveying pipe 2 at each time, so that the pressure drop amplitude is small, the high-pressure medium can be always sprayed out under high pressure, the impact force is strong, and a good purging effect can be achieved.

In addition to the above-mentioned combination, only one of the branch medium conveying pipes 2 can be used for cleaning, but the length of each pipe body support 3 is ensured to be not less than the radius of the rotor 1 of the air preheater, so as to ensure that the branch medium conveying pipe 2 has a sufficient adjusting range, the position of the gun nozzle 5 can be changed by adjusting the position of the medium conveying pipe 2 for a plurality of times, and the cleaning range of the position adjusting and purging can also cover the whole rotor.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a rotation air preheater high pressure blasts device which characterized in that: the air preheater comprises a plurality of medium conveying pipes (2) which are arranged above an air preheater rotor (1) in parallel, the tail end of each medium conveying pipe (2) is connected with a gun head (4), the plurality of gun heads (4) are sequentially arranged along the radius direction of the air preheater rotor (1), and each gun head (4) comprises a plurality of gun nozzles (5) communicated with the medium conveying pipes (2); a pipe body support (3) used for correspondingly mounting each medium conveying pipe (2) is arranged above the air preheater rotor (1), each medium conveying pipe (2) is in sliding connection with the corresponding pipe body support (3), and the relative positions of the medium conveying pipes (2) and the pipe body supports (3) are adjustable; one end of each medium conveying pipe (2) far away from the gun head (4) is connected with a valve (7) and then is connected with a conveying hose (8), and the plurality of conveying hoses (8) are communicated with a common high-pressure medium conveying main pipe (9).

2. The rotary type air preheater high pressure purging device as claimed in claim 1, wherein: a plurality of body support (3) are connected with common mounting bracket (6), and mounting bracket (6) and ground fixed connection.

3. The rotary type air preheater high pressure purging device as claimed in claim 2, wherein: the number of the medium conveying pipes (2) above the air preheater rotor (1) is 4, and the number of the pipe body supports (3) corresponding to the medium conveying pipes (2) is also 4.

4. The rotary type air preheater high pressure purging device as claimed in claim 1, wherein: all be equipped with one end open-ended T-slot on every body support (3), the T-slot comprises last holding tank (10) and lower guide slot (11) that are linked together, and medium conveyer pipe (2) are located holding tank (10) in, and a plurality of rifle mouths (5) are located guide slot (11) down and are just outstanding in guide slot (11) down.