CN214198749U - Combined type air preheater anti-corrosion joint - Google Patents
Combined type air preheater anti-corrosion joint Download PDFInfo
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- CN214198749U CN214198749U CN202022972267.0U CN202022972267U CN214198749U CN 214198749 U CN214198749 U CN 214198749U CN 202022972267 U CN202022972267 U CN 202022972267U CN 214198749 U CN214198749 U CN 214198749U
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- pipe
- connecting pipe
- flow guide
- air preheater
- guide plate
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a modular air preheater anticorrosion connects includes: the device comprises a connecting pipe, a flow guide branch pipe, a flow guide assembly and a butt flange, wherein the connecting pipe is inserted at one end of an empty pre-pipe, which is far away from a boiler, the flow guide branch pipe is inserted below the connecting pipe, the flow guide assembly is fixedly connected in the flow guide branch pipe, and the butt flange is sleeved at the other end of the connecting pipe; the flow guide assembly comprises: the guide plate is arranged inside the connecting pipe, and the guide groove is arranged in the connecting pipe; one side of the guide plate is communicated with an alkaline water micro-spray pipe; the hollow pre-pipe is of a horizontal structure; the flow guide groove is arranged at the bottom of the connecting pipe; the guide plate is arranged at the top of the connecting pipe. The utility model discloses a water conservancy diversion subassembly is to being in low temperature condensation sulphuric acid water smoke and carrying out neutralization and water conservancy diversion processing, and is assisted the sealing action again when avoiding sulphuric acid liquid excessive corrosion metal device.
Description
Technical Field
The utility model belongs to empty tub of anticorrosive pipeline field in advance, especially a modular air preheater anticorrosion connects.
Background
Present tubular air preheater is at the operation in-process, collect the flue gas in the boiler and absorb the heat, with heat transfer to cold air, improve the heat effect of fuel, reduce the emission of flue gas, present power plant's boiler's main fuel adopts coal, coal releases a large amount of steam and sulphide in the combustion process, steam and smog granule subside and condense on tubular air preheater's bottom and inner wall and form dew point corrosion's phenomenon after the heat transfer of high temperature flue gas in the heat transfer process, present air preheater pipe adopts anticorrosive material to make and avoids this phenomenon, but the sulphuric acid water smoke of condensation still can be in the same direction as the pipeline and flow out air preheater socle portion along the way, and then can lead to the fact the corruption to the metal crate on the air preheater pipe, reduce equipment life.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a modular air preheater anticorrosion connects to solve the above-mentioned problem that prior art exists.
The technical scheme is as follows: a modular air preheater corrosion protection fitting comprising: the device comprises a connecting pipe, a flow guide branch pipe, a flow guide assembly and a butt flange, wherein the connecting pipe is inserted at one end of an empty pre-pipe, which is far away from a boiler, the flow guide branch pipe is inserted below the connecting pipe, the flow guide assembly is fixedly connected in the flow guide branch pipe, and the butt flange is sleeved at the other end of the connecting pipe;
the flow guide assembly comprises: the guide plate is arranged inside the connecting pipe, and the guide groove is arranged in the connecting pipe;
one side of the guide plate is communicated with an alkaline water micro-spray pipe;
the hollow pre-pipe is of a horizontal structure; the flow guide groove is arranged at the bottom of the connecting pipe; the guide plate is arranged at the top of the connecting pipe.
In a further embodiment, the inside of the counterflange is made of a soft rubber material.
In a further embodiment, a metal hoop pipe is further arranged outside the splicing position of the connecting pipe and the hollow pre-pipe; the metal hoop pipe is used for fixing the tightness degree of the connection between the connecting pipe and the hollow pre-pipe through a locking screw.
In a further embodiment, the length of the baffle is greater than the diameter length of the connecting pipe and less than the sum of the diameter of the connecting pipe and the depth of the guide groove.
In further embodiments, the number of baffles is greater than one; the length of the guide plate is changed along with the guide groove; a plurality of staggered ventilating meshes are arranged between the guide plates.
In a further embodiment, the width of the guide groove is larger than the width of the whole guide plates, and the guide groove vertically corresponds to the whole guide plates.
In a further embodiment, the bottom of the flow guide groove is communicated with a capillary conduit.
Has the advantages that: the utility model discloses a water conservancy diversion subassembly is to being in low temperature condensation sulphuric acid water smoke and carrying out neutralization and water conservancy diversion processing, and then can accelerate the condensation rate of sulphuric acid water smoke in the flue gas, make the drop of water that condenses assemble into the rivers and flow in the water conservancy diversion recess, other uncoagulated sulphuric acid water smoke condenses into the drop of water on the guide plate when the guide plate in the pipeline simultaneously, assemble during the downward flow in water conservancy diversion recess, outside the capillary pipe derivation connecting tube of water conservancy diversion recess bottom, assist the sealing action again when avoiding sulphuric acid liquid excessive corrosion metal device.
Drawings
Fig. 1 is a perspective view of the anti-corrosion joint of the combined air preheater of the present invention.
Fig. 2 is a schematic structural view of the anti-corrosion joint of the combined air preheater of the present invention.
Fig. 3 is a schematic structural view of the flow guide assembly of the present invention.
The reference signs are: the device comprises an empty prefabricated pipe 1, a connecting pipe 2, a flow guide branch pipe 3, a flow guide assembly 30, a flow guide plate 300, a flow guide groove 301, a capillary guide pipe 302, a butt flange 4, a micro spray pipe 5 and a metal clamp pipe 6.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
The applicant finds that the existing tubular air preheater collects the heat absorbed by the flue gas in a boiler in the operation process, transfers the heat to cold air, improves the heat effect of fuel, and reduces the emission of the flue gas, the main fuel of the existing power plant boiler adopts coal, the coal releases a large amount of water vapor and sulfide in the combustion process, the water vapor and smoke particles are settled and condensed on the bottom and the inner wall of the tubular air preheater to form the dew point corrosion phenomenon after the high-temperature flue gas exchanges heat in the heat exchange process, the existing air preheater pipe is made of an anti-corrosion material to avoid the phenomenon, but the condensed sulfuric acid water mist still flows out of the bottom of the air preheater pipe along the pipeline, so that the metal frame on the air preheater pipe can be corroded, and the service life of equipment is shortened.
The combined type air preheater corrosion prevention joint shown in the figures 1 to 3 comprises: the device comprises an empty prefabricated pipe 1, a connecting pipe 2, a flow guide branch pipe 3, a flow guide assembly 30, a flow guide plate 300, a flow guide groove 301, a capillary guide pipe 302, a butt flange 4, a micro spray pipe 5 and a metal clamp pipe 6.
The connecting pipe 2 is inserted at one end of the hollow precast pipe 1 far away from the boiler, the guide branch pipe 3 is inserted below the connecting pipe 2, the guide component 30 is fixedly connected in the guide branch pipe 3 and the connecting pipe 2, and the butt flange 4 is sleeved at the other end of the connecting pipe 2; the flow guide assembly 30 includes: a guide plate 300 disposed inside the connection pipe 2, and a guide groove 301 disposed in the connection pipe 2; one side of the guide plate 300 is communicated with an alkaline water micro-nozzle 5; the hollow pre-pipe 1 is of a horizontal structure; the flow guide groove 301 is arranged at the bottom of the connecting pipe 2; the guide plate 300 is disposed on the top of the connection pipe 2. The alkaline water micro-spray pipe 5 humidifies the guide plate 300 at the top of the guide plate 300, firstly, sulfuric acid water mist entering the connecting pipe 2 is neutralized, secondly, the condensation speed of the sulfuric acid water mist in the pipeline is accelerated, water drops of the sulfuric acid water mist condensed on the guide plate 300 are guided into the guide groove 301 through the guide plate 300, and the guide groove 301 collects sulfuric acid liquid, so that the sulfuric acid liquid is prevented from flowing out of a connecting piece to corrode other equipment connected with the connecting piece; the interior of the butt flange 4 is made of soft rubber materials, so that the sulfuric acid water mist corrosion which is not completely neutralized can be avoided.
A metal hoop pipe 6 is arranged outside the splicing part of the connecting pipe 2 and the hollow pre-pipe 1; the tightness degree of the connection of the metal clamp pipe 6 and the hollow pre-pipe 1 is fixed through a locking screw, so that the impact of unstable air pressure can be resisted.
The length of the flow guide plate 300 is greater than the diameter of the connecting pipe 2 and less than the sum of the diameter of the connecting pipe 2 and the depth of the flow guide groove 301, so that water drops condensed on the flow guide plate 300 are gathered in the flow guide groove 301.
The number of the flow deflectors 300 is more than one; the length of the guide plate 300 is changed along with the guide groove 301; a plurality of staggered ventilating meshes are arranged between the guide plates 300, so that low-temperature flue gas can be enabled to quickly enter the discharge port through the connecting piece; the guide plate 300 is made of acid-resistant steel materials, and is strong in toughness and not easy to deform after long-term use.
The width of the diversion groove 301 is larger than the width of the whole diversion plates 300 and vertically corresponds to the whole diversion plates 300, so that the sulfuric acid water drops are prevented from falling to the outside of the diversion groove 301.
The bottom of the flow guide groove 301 is communicated with a capillary conduit 302, so that sulfuric acid water can be uniformly collected and guided out, and the sulfuric acid liquid is prevented from leaking.
The working principle is as follows:
high-temperature flue gas entering the air preheater tube 1 passes through the tail of the air preheater tube 1 after heat exchange, at the moment, the temperature of flue gas and tube wall of a heating surface section at the tail is lower, sulfuric acid steam in the high-temperature flue gas is lower than a dew point, then the flue gas is condensed at the tail end, the micro spray tube 5 is opened, then alkali water mist is sprayed into the connecting tube 2, the condensation speed of sulfuric acid water droplets is accelerated, the sulfuric acid water mist in the pipeline is neutralized, the flue gas passing through the guide plate 300 is neutralized, then the sulfuric acid water droplets condensed at the tube wall end at the tail end and the water droplets condensed on the guide plate 300 are accelerated by the alkali water mist to be uniformly converged into the flow guide groove 301 and discharged uniformly from the capillary guide pipe 302, and sulfuric acid liquid in the air preheater tube 1 is prevented from leaking to corrode metal elements
The utility model discloses a water conservancy diversion subassembly 30 is to being in low temperature condensation sulphuric acid water smoke and carrying out neutralization and water conservancy diversion processing, and then can accelerate the condensation rate of sulphuric acid water smoke in the flue gas, make the drop of water that condenses assemble into rivers and flow in water conservancy diversion recess 301, other non-condensation sulphuric acid water smoke condenses into the drop of water on guide plate 300 when guide plate 300 in the pipeline simultaneously, assemble during downwards inflow water conservancy diversion recess 301, outside capillary pipe 302 through water conservancy diversion recess 301 bottom derives connecting pipe 2, it is supplementary to the sealing action again to avoid sulphuric acid liquid excessive corrosion metal device when.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (7)
1. A modular air preheater anticorrosion connector, comprising: the device comprises a connecting pipe, a flow guide branch pipe, a flow guide assembly and a butt flange, wherein the connecting pipe is inserted at one end of an empty pre-pipe, which is far away from a boiler, the flow guide branch pipe is inserted below the connecting pipe, the flow guide assembly is fixedly connected in the flow guide branch pipe, and the butt flange is sleeved at the other end of the connecting pipe;
the flow guide assembly comprises: the guide plate is arranged inside the connecting pipe, and the guide groove is arranged in the connecting pipe;
one side of the guide plate is communicated with an alkaline water micro-spray pipe;
the hollow pre-pipe is of a horizontal structure; the flow guide groove is arranged at the bottom of the connecting pipe; the guide plate is arranged at the top of the connecting pipe.
2. The corrosion protection joint for combined air pre-heaters as claimed in claim 1, wherein the inside of the butt flange is made of soft rubber material.
3. The combined air preheater corrosion prevention joint according to claim 1, wherein a metal hoop pipe is further arranged outside the joint of the connecting pipe and the air preheater pipe; the metal hoop pipe is used for fixing the tightness degree of the connection between the connecting pipe and the hollow pre-pipe through a locking screw.
4. The combined air preheater corrosion protection joint according to claim 1, wherein the length of said deflector is greater than the diameter length of the connecting pipe and less than the sum of the diameter of the connecting pipe and the depth of the deflector groove.
5. The combined air preheater corrosion protection adapter according to claim 1, wherein the number of said baffles is more than one; the length of the guide plate is changed along with the guide groove; a plurality of staggered ventilating meshes are arranged between the guide plates.
6. The corrosion protection joint of claim 1, wherein the width of the diversion groove is larger than the width of the plurality of diversion plates and vertically corresponds to the plurality of diversion plates.
7. The combined air preheater corrosion protection joint according to claim 6, wherein the bottom of the flow guide groove is communicated with a capillary conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022972267.0U CN214198749U (en) | 2020-12-11 | 2020-12-11 | Combined type air preheater anti-corrosion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022972267.0U CN214198749U (en) | 2020-12-11 | 2020-12-11 | Combined type air preheater anti-corrosion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214198749U true CN214198749U (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022972267.0U Active CN214198749U (en) | 2020-12-11 | 2020-12-11 | Combined type air preheater anti-corrosion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214198749U (en) |
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2020
- 2020-12-11 CN CN202022972267.0U patent/CN214198749U/en active Active
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