CN212584994U - Device for improving corrosive wear of steel pipe at low temperature section of tubular air preheater - Google Patents
Device for improving corrosive wear of steel pipe at low temperature section of tubular air preheater Download PDFInfo
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- CN212584994U CN212584994U CN202020396904.1U CN202020396904U CN212584994U CN 212584994 U CN212584994 U CN 212584994U CN 202020396904 U CN202020396904 U CN 202020396904U CN 212584994 U CN212584994 U CN 212584994U
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- air preheater
- steel pipe
- pattern plate
- glass
- corrosive wear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a device for improving tubular air heater low temperature section steel pipe corrosive wear belongs to the heat transfer field. The air preheater comprises a pattern plate, wherein a plurality of holes are formed in the pattern plate, an air preheater steel pipe is welded in the holes, and one end of the air preheater steel pipe extends out of the pattern plate by 3-5 mm; the glass anti-abrasion sleeve is inserted into the air preheater steel pipe and extends out of the air preheater steel pipe, and a horn nozzle is arranged at the end, close to the pattern plate, of the glass anti-abrasion sleeve. The utility model discloses after the installation glass abrasionproof sleeve pipe, the flue gas can be washed glass abrasionproof sleeve pipe earlier, provides better protectiveness to the corrosive wear of air heater steel pipe. The stability of the air preheater in the operation of the boiler is further improved, the phenomena of corrosion and abrasion of the steel pipe of the air preheater in the operation of the boiler are reduced, and the service life of the air preheater is prolonged.
Description
Technical Field
The utility model relates to a device for improving tubular air heater low temperature section steel pipe corrosive wear belongs to the heat transfer field.
Background
The air preheater is the main auxiliary equipment of thermal power plant, and it is the heat exchange equipment which utilizes the waste heat of flue gas to heat the air required by boiler combustion. The air preheater works in the area with the lowest flue gas temperature in the boiler, recovers the heat of the flue gas, reduces the temperature of the flue gas, and therefore improves the boiler efficiency.
The air preheater is a key part of a boiler part, is particularly mainly arranged below a tail vertical shaft flue and consists of a plurality of steel pipes which are arranged in parallel or in a staggered way, and two ends of each steel pipe are welded with a pattern plate to form a cube with a certain heating surface. The tubular air preheater is divided into a vertical type and a horizontal type. In order to ensure that the heating surface supports the tube box of the air preheater on the frame of the preheater through a pattern plate, the frame of the preheater is connected with a boiler steel structure.
Taking a vertical air preheater channel as an example, the flue gas is flushed along the direction of the steel pipe, and the air is flushed along the direction vertical to the steel pipe. The coal-fired boiler, the flue gas contains vapor and sulphuric acid steam after the coal burns, when the flue gas enters the air preheater, because the flue gas temperature is reduced or the flue gas contacts the metal heating surface with lower temperature, when the wall temperature of the heating surface is close to or lower than the acid dew point of the flue gas, the sulphuric acid steam in the flue gas can be condensed on the metal surface, and the corrosive wear can be carried out on the joint of the air preheater pattern plate and the steel pipe. Corrosive wear can make air heater card and steel pipe junction rupture perforation, make the flue gas leak in the middle of the air, cause the burning in the stove to worsen, boiler efficiency reduces, influences the safe economic operation of boiler.
In view of the problems existing in the prior art, the utility model discloses combine many years 'design and experience of use in relevant field, assist too strong professional knowledge, the device that has designed and manufactured a low temperature section steel pipe corrosive wear's that is used for improving tubular air preheater is overcome above-mentioned defect.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a pair of a device for improving tubular air heater low temperature section steel pipe corrosive wear through at air heater steel pipe internally mounted glass abrasionproof sleeve pipe, the flue gas can be washed glass abrasionproof sleeve pipe earlier, provides better protectiveness to the corrosive wear of air heater steel pipe.
In order to realize the purpose, the utility model discloses a technical scheme as follows: a device for improving the corrosive wear of a steel pipe at the low temperature section of a tubular air preheater comprises a pattern plate, wherein a plurality of holes are formed in the pattern plate, the air preheater steel pipe is welded and connected in the holes, and one end of the air preheater steel pipe extends out of the pattern plate by 3-5 mm;
the glass anti-abrasion sleeve is inserted into the air preheater steel pipe and extends out of the air preheater steel pipe, and a horn nozzle is arranged at the end, close to the pattern plate, of the glass anti-abrasion sleeve.
As a preferred technical scheme, the air preheater steel pipe is connected with the glass abrasion-proof sleeve by adopting glue.
According to a preferable technical scheme, the outer sides of the end parts of the pattern plates and the steel pipes of the air preheater are in angle-type full welding.
The utility model discloses an useful part is:
after the glass abrasion-proof sleeve is installed, smoke can firstly flush the glass abrasion-proof sleeve, and better protectiveness is provided for the corrosive wear of the air preheater steel pipe. The stability of the air preheater in the operation of the boiler is further improved, the phenomena of corrosion and abrasion of the steel pipe of the air preheater in the operation of the boiler are reduced, and the service life of the air preheater is prolonged;
the utility model discloses glass abrasionproof sleeve pipe tip adopts the horn mouth structure, has not only blockked the direct erodeing of flue gas and air heater steel pipe, and the horn mouth structure can also improve the concentricity of glass abrasionproof sleeve pipe and air heater steel pipe when cooperating with air heater steel pipe tip moreover.
The utility model discloses a high temperature resistant glass glues and connects, paints glue and assembles with the air heater steel pipe again on glass abrasionproof sleeve pipe 3, and high temperature resistant glass glues sustainability and is in-60 ℃ to +1280 ℃ work, does not influence the performance, has advantages such as bonding strength height, sealing performance are good, corrosion-resistant, and its leakproofness is better moreover, and is more convenient.
Drawings
FIG. 1 is a schematic structural diagram of a device for improving the corrosive wear of a steel pipe at a low temperature section of a tubular air preheater.
In the figure, 1, a pattern plate, 2, an air preheater steel pipe, 3 and a glass anti-abrasion sleeve.
Detailed Description
The present invention is further described below to facilitate understanding by those skilled in the art.
As shown in fig. 1, a device for improving the corrosive wear of a steel pipe at a low temperature section of a tubular air preheater comprises a pattern plate 1, wherein a plurality of holes are formed in the pattern plate 1, air preheater steel pipes 2 are welded and connected in the holes, specifically, the pattern plate 1 and the outer sides of the end parts of the air preheater steel pipes 2 are welded in an angle shape, and the welding is guaranteed to have no quality defect, and one end of each air preheater steel pipe 2 extends out of the outer side of the pattern plate 1 by 3-5 mm;
the glass anti-abrasion sleeve 3 is inserted in the air preheater steel pipe 2 of the utility model, the air preheater steel pipe 2 and the glass anti-abrasion sleeve 3 are preferably connected by glue, and high-temperature-resistant glass cement is preferably selected, the cement is smeared on the glass abrasion-resistant sleeve 3 and then is assembled with the air preheater steel pipe 2, the high-temperature-resistant glass cement can continuously work at-60 ℃ to +1280 ℃, the performance is not influenced, and the high-temperature-resistant glass cement has the advantages of high bonding strength, good sealing performance, corrosion resistance and the like, the sealing performance is better and more convenient, the glass anti-abrasion sleeve 3 extends out of the air preheater steel pipe 2, the horn mouth is arranged at the end of the glass anti-abrasion sleeve 3 close to the pattern plate 1, the utility model adopts the horn mouth structure, not only the direct scouring of the smoke and the air preheater steel pipe 2 is blocked, and when the horn mouth structure is matched with the end part of the steel pipe 2 of the air preheater, the concentricity of the glass abrasion-proof sleeve 3 and the steel pipe 2 of the air preheater can be improved.
The utility model discloses an after installation glass abrasionproof sleeve pipe 3, the flue gas can be washed glass abrasionproof sleeve pipe 3 earlier, provides better protectiveness to the corrosive wear of air heater steel pipe 2. The stability of the air preheater in the operation of the boiler is further improved, the phenomena of corrosion and abrasion of the steel pipe 2 of the air preheater in the operation of the boiler are reduced, and the service life of the air preheater is prolonged.
For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.
Claims (3)
1. The utility model provides a device for improving tubular air heater low temperature section steel pipe corrosive wear which characterized in that: the air preheater comprises a pattern plate, wherein a plurality of holes are formed in the pattern plate, an air preheater steel pipe is welded in the holes, and one end of the air preheater steel pipe extends out of the pattern plate by 3-5 mm;
the glass anti-abrasion sleeve is inserted into the air preheater steel pipe and extends out of the air preheater steel pipe, and a horn nozzle is arranged at the end, close to the pattern plate, of the glass anti-abrasion sleeve.
2. The apparatus for increasing the corrosive wear of the steel tubes in the low temperature section of a tubular air preheater as recited in claim 1, wherein: the air preheater steel pipe and the glass abrasion-proof sleeve are connected by adopting glue.
3. The apparatus for increasing the corrosive wear of the steel tubes in the low temperature section of a tubular air preheater as recited in claim 1, wherein: and the outer sides of the end parts of the pattern plates and the steel pipes of the air preheater are fully welded in an angle shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020396904.1U CN212584994U (en) | 2020-03-25 | 2020-03-25 | Device for improving corrosive wear of steel pipe at low temperature section of tubular air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020396904.1U CN212584994U (en) | 2020-03-25 | 2020-03-25 | Device for improving corrosive wear of steel pipe at low temperature section of tubular air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212584994U true CN212584994U (en) | 2021-02-23 |
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ID=74655951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020396904.1U Active CN212584994U (en) | 2020-03-25 | 2020-03-25 | Device for improving corrosive wear of steel pipe at low temperature section of tubular air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212584994U (en) |
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2020
- 2020-03-25 CN CN202020396904.1U patent/CN212584994U/en active Active
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