CN219454004U - Heat exchanger structure of boiler air preheater - Google Patents

Abstract

The utility model discloses a heat exchanger structure of a boiler air preheater. A boiler air preheater heat exchanger structure comprising: the air preheater comprises an air preheater main body, wherein a front end plate is arranged at one end of the air preheater main body, a protection plate is arranged at one side of the front end plate, a plurality of mounting holes are formed in the protection plate, a protection sleeve is arranged in each mounting hole, annular clamping grooves are formed in the periphery of each mounting hole, and clamping connectors matched with the clamping grooves are arranged on the protection sleeve. According to the heat exchanger structure of the boiler air preheater, the protection pipe sleeves are clamped with the protection plates, any one protection sleeve can be conveniently replaced and installed independently, the installation difficulty is low, the inlet of the air preheater is protected through the protection pipe sleeves, all the protection sleeves can be quickly detached through connecting the protection plates with the protection sleeves, and the whole protection sleeve can be conveniently and quickly replaced.

Description

Heat exchanger structure of boiler air preheater

Technical Field

The utility model relates to the technical field of boilers, in particular to a heat exchanger structure of a boiler air preheater.

Background

The air preheater is a device for improving the heat exchange performance of the boiler system. The main function of the air preheater is to collect heat in the flue gas exhausted by the boiler and transmit the heat to the air before entering the boiler. The air pre-heater has three main kinds, namely a plate air pre-heater, a rotary air pre-heater and a tubular air pre-heater. The tubular air preheater has the advantages of small volume, light weight, compact structure, large abrasion bearing allowance of the heat transfer element, good sealing performance, high heat transfer efficiency and easy manufacture and processing, and is therefore widely applied to power station boilers and industrial boilers. The tubular air preheater has the disadvantages of large volume, easy ash blocking, difficult cleaning and easy abrasion at the smoke inlet.

Through the search, the file of current authority bulletin number is CN218328244U, has disclosed a boiler air preheater heat exchanger structure, has the installation and changes the abrasionproof sleeve pipe simply, easily operation, can improve work efficiency's effect effectively.

However, in actual use, because the anti-wear sleeve is installed on the protection plate in a fixed mode, in the process of connecting the actual protection plate with the inlet end side plate of the air preheater, an integral butt joint insertion mode is adopted, the tail ends of all the anti-wear sleeves must be all aligned with the steel pipe of the air preheater, all the anti-wear sleeves must be parallel, the phenomenon of deflection and bending cannot occur, the precision requirement is high, otherwise, the correct connection of the protection plate and the inlet end side plate is difficult to realize, the installation difficulty is high, and the quick replacement of a single anti-wear sleeve cannot be realized.

Therefore, it is necessary to provide a heat exchanger structure of a boiler air preheater to solve the above technical problems.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects in the prior art, the utility model provides the boiler air preheater heat exchanger structure which can conveniently and independently replace and install any protective sleeve and has low installation difficulty.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a boiler air preheater heat exchanger structure comprising: the air preheater main part, the air preheater main part is the tubular, the front end board is installed to the front end of air preheater main part, and the rear end board is installed to the rear end, the guard plate is installed to one side of front end board, a plurality of mounting holes have been seted up on the guard plate, and the steel pipe hole of air preheater main part is aimed at to the mounting hole, and the diameter of mounting hole slightly is greater than the steel pipe internal diameter, install the protective sleeve in the mounting hole, the periphery of mounting hole is equipped with annular joint groove, be equipped with on the protective sleeve with joint of joint groove looks adaptation.

Preferably, a plurality of scraping strips are installed at one end of the protective sleeve, and a scraping ring is installed at one end of each scraping strip.

Preferably, clamping grooves are formed in two sides of the front end plate, and clamping columns matched with the clamping grooves are arranged on two sides of the protection plate.

Preferably, the guard plate is connected with the front end plate through bolts, and a plurality of bolts are arranged.

Preferably, a guide post is arranged at one end of the clamping post, the diameter of the front end of the guide post is small, and the diameter of the rear end of the guide post is the same as that of the guide post.

Preferably, the clamping column is provided with a plurality of protruding points, and the protruding points increase the pressure between the clamping column and the clamping groove.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the protection sleeve is clamped with the protection plate, so that any one protection sleeve can be conveniently replaced and installed independently, the installation difficulty is low, the entrance of the air preheater is protected through the protection sleeve, and all the protection sleeves can be quickly detached by connecting the protection plate with the protection sleeve, so that the whole protection sleeve is convenient to replace quickly;

(2) The utility model can conveniently scrape the ash on the inner wall of the steel pipe of the air preheater main body by arranging the scraping strips and the scraping rings, thereby facilitating the subsequent cleaning operation;

(3) According to the utility model, the clamping groove and the clamping column are arranged, so that the guiding effect can be realized, and the mounting holes on the protection plate are more easily aligned with the steel pipe inlet of the air preheater main body;

(4) According to the utility model, the protection plate is connected with the front end plate through the bolts, so that the connection stability of the end plate and the protection plate can be improved;

(5) According to the utility model, the guide post is arranged at one end of the clamping post, so that the clamping post can be guided into the clamping groove;

(6) According to the utility model, the convex points are arranged on the clamping columns, so that a certain fixing effect can be achieved, and the clamping columns are not easy to deviate from the clamping grooves.

Drawings

FIG. 1 is a schematic structural view of a heat exchanger structure of a boiler air preheater provided by the utility model;

FIG. 2 is a schematic view of the wear sleeve in the boiler air preheater heat exchanger configuration shown in FIG. 1;

FIG. 3 is a schematic view of the wear sleeve in the boiler air preheater heat exchanger configuration shown in FIG. 1;

FIG. 4 is a schematic view of the structure of a protection plate in the heat exchanger structure of the boiler air preheater shown in FIG. 1;

fig. 5 is a schematic diagram of a clamping column in the heat exchanger structure of the boiler air preheater shown in fig. 1.

Wherein, the names corresponding to the reference numerals are: the air preheater comprises a 1-air preheater main body, a 2-front end plate, a 3-protection plate, a 4-mounting hole, a 5-protection sleeve, a 6-clamping groove, a 7-clamping connector, an 8-scraping strip, a 9-scraping ring, a 10-front end plate, an 11-clamping column, 12-bolts, 13-guide columns and 14-salient points.

Detailed Description

The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.

Example 1:

as shown in fig. 1 to 5, the heat exchanger structure of the boiler air preheater provided by the utility model comprises: the air preheater main body 1, air preheater main body 1 is the tubular, front end board 2 is installed to the front end of air preheater main body 1, and the rear end board is installed to the rear end, guard plate 3 is installed to one side of front end board 2, a plurality of mounting holes 4 have been seted up on the guard plate 3, and the steel pipe hole of air preheater main body 1 is aligned to mounting hole 4, and the diameter of mounting hole 4 is slightly greater than (0.2-0.5 mm) steel pipe internal diameter, install protective sleeve 5 in the mounting hole 4, the periphery of mounting hole 4 is equipped with annular joint groove 6, be equipped with on the protective sleeve 5 with the joint 7 of joint groove 6 looks adaptation, at first, be connected guard plate 3 and front end board 2, then insert protective sleeve 5 to mounting hole 4, make the one end of protective sleeve 5 insert in the steel pipe through protective sleeve 5 to the air preheater entry, realize the joint with joint of joint groove 6 in proper order with protective sleeve 4 and 3 joint, can be the 3 and install 3 the protective sleeve 5 simultaneously and install the protective sleeve 5 simultaneously and can be the whole of the same as 3 is realized in a short distance from one to the same time, and the whole can be realized by the 3 is the 3, the whole can be realized by the quick change of the protective sleeve 5, and the whole can be broken down the protective sleeve is realized by the 3, and the whole can be replaced by the protective sleeve is easy to realize the 3 is replaced.

Carry out the joint with protection pipe box 5 and guard plate 3 through setting up, can be convenient carry out the individual change and the installation to arbitrary protection sleeve pipe 5, the installation degree of difficulty is lower, protects the entrance of air preheater through protection pipe box 5 to can be connected with protection sleeve pipe 5 through with guard plate 3, can pull down all protection sleeve pipes 5 fast, make things convenient for the whole quick replacement of protection sleeve pipe 5.

Example 2:

as shown in fig. 2-3, a plurality of scraping strips 8 are installed at one end of the protective sleeve 5, and a scraping ring 9 is installed at one end of the scraping strips 8, when in use, the protective sleeve 3 is rotated to enable the side cutting edge of the scraping strips 8 to scrape off soot on the inner wall of the steel pipe 5, and meanwhile, when the protective sleeve 5 is pulled out of the steel pipe, the scraping ring 9 cleans the inner wall of the steel pipe again, so that the subsequent cleaning operation of the air preheater main body 1 is facilitated.

Through setting up scraping strip 8 and scraping ring 9, the cigarette ash that can be convenient on the steel pipe inner wall of air preheater main part 1 is scraped off, makes things convenient for follow-up cleaning operation.

Example 3:

as shown in fig. 1, the two sides of the front end plate 10 are provided with clamping grooves 10, two sides of the protection plate 3 are provided with clamping columns 11 adapted to the clamping grooves 10, and when in use, the clamping columns 11 are aligned to the clamping grooves 10 to be inserted, so that the mounting holes 4 on the protection plate 3 are aligned to the steel pipe inlets of the air preheater main body 1.

By arranging the clamping groove 10 and the clamping column 11, the guiding effect can be achieved, so that the mounting holes 4 on the protection plate 3 are more easily aligned with the steel pipe inlet of the air preheater main body 1.

Example 4:

as shown in fig. 1, the guard plate 3 and the front end plate 2 are connected by bolts 12, and a plurality of bolts 12 are provided, and when in use, the front end plate 2 and the guard plate 3 are connected by the bolts 12, so that the connection of the two is more stable.

By providing the shield plate 3 and the front end plate 2 connected by the bolts 12, the connection stability between the end plate 2 and the shield plate 3 can be improved.

Example 5:

as shown in fig. 5, a guide post 13 is mounted at one end of the clamping post 11, the diameter of the front end of the guide post 13 is small, and the diameter of the rear end is the same as that of the guide post 11, when in use, the guide post 13 is easier to insert into the clamping groove 10 due to the small diameter of the front end, and the clamping post 11 is guided into the clamping groove 10.

By providing the guide post 13 at one end of the card post 11, the card post 11 can be guided into the card slot 10.

Example 6:

as shown in fig. 5, the protruding points 14 are provided on the clamping post 11, the protruding points 14 are plural, and the protruding points 14 increase the pressure between the clamping post 11 and the clamping groove 10, so that the clamping post 11 is not easy to be separated from the clamping groove 10, and a certain fixing effect is achieved.

By arranging the protruding points 14 on the clamping columns 11, a certain fixing effect can be achieved, and the clamping columns 11 are not easy to deviate from the clamping grooves 10.

When the air preheater is used, when the air preheater is installed, the protection plate 3 is connected with the front end plate 2, then the protection sleeve 5 is inserted in the alignment installation hole 4, one end of the protection sleeve 5 is inserted into the steel pipe along the installation hole 4, the air preheater inlet is protected through the protection sleeve 5, the clamping connector 7 is inserted into the clamping groove 6 to realize the clamping with the clamping groove 6, and the protection sleeve 4 and the protection plate 3 are sequentially clamped, so that the installation difficulty is greatly reduced because the protection sleeve 5 is independently and not integrally in butt joint installation, and the damaged protection sleeve 5 can be conveniently replaced rapidly;

if all the protective sleeves 5 need to be detached, the protective plates 3 are moved to the direction away from the air preheater main body 1 by detaching the protective plates 3, so that all the protective sleeves 5 are detached together with the protective plates 3, and the whole quick replacement of the protective sleeves 5 can be realized.

The above embodiment is only one of the preferred embodiments of the present utility model, and should not be used to limit the scope of the present utility model, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present utility model are still consistent with the present utility model, and all the technical problems to be solved are included in the scope of the present utility model.

Claims (6)

1. A boiler air preheater heat exchanger structure, comprising:

the air preheater comprises an air preheater main body, wherein a front end plate is arranged at one end of the air preheater main body, a protection plate is arranged at one side of the front end plate, a plurality of mounting holes are formed in the protection plate, a protection sleeve is arranged in each mounting hole, annular clamping grooves are formed in the periphery of each mounting hole, and clamping connectors matched with the clamping grooves are arranged on the protection sleeve.

2. The boiler air preheater heat exchanger structure of claim 1, wherein a plurality of scraping strips are mounted at one end of the protective sleeve, and a scraping ring is mounted at one end of the scraping strips.

3. The boiler air preheater heat exchanger structure according to claim 1, wherein clamping grooves are formed in two sides of the front end plate, and clamping columns matched with the clamping grooves are mounted on two sides of the protection plate.

4. A boiler air preheater heat exchanger structure as set forth in claim 1, wherein said shield plate is bolted to said front end plate.

5. A boiler air preheater heat exchanger structure as set forth in claim 3, wherein a guide post is mounted at one end of said clamping post.

6. A boiler air preheater heat exchanger structure as set forth in claim 3, wherein said clip is provided with bumps.