CN105202188A - Sealing device with double flexible air pre-heaters - Google Patents
Sealing device with double flexible air pre-heaters Download PDFInfo
- Publication number
- CN105202188A CN105202188A CN201410286645.6A CN201410286645A CN105202188A CN 105202188 A CN105202188 A CN 105202188A CN 201410286645 A CN201410286645 A CN 201410286645A CN 105202188 A CN105202188 A CN 105202188A
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- plate
- high temperature
- temperature resistant
- fixed
- resistant composite
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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
Abstract
The invention provides a sealing device with double flexible air pre-heaters. The sealing device comprises a plurality of elastic steel plates. Sealing plates are arranged at one sides of the elastic steel plates in parallel. Movable plate devices are installed on the upper portions of the sealing plates. Each movable plate device comprises an L-shaped connecting plate. The horizontal ends of the L-shaped connecting plates are connected to the ends of the sealing plates. According to the sealing device, butterfly bolts are adopted for fixing a high-temperature-resistant composite plate to a fixing plate, and are provided with handles, an operator can fix the high-temperature-resistant composite plate to the fixing plate fast without using a tool, assembling time is greatly shortened, production efficiency is improved, and production cost is reduced.
Description
Technical field
The present invention relates to a kind of seal arrangement, specifically a kind of air preheater double-flexibility air pre-heating device sealing device.
Background technique
Air preheater utilizes the heat smoke that in thermal power plant, coal fired boiler afterbody is discharged, by a kind of heat-exchanger rig combustion-supporting in input boiler after cool air heating.Because the fume side of rotary regenerative air preheater and air side also exist temperature difference, the easy like this rotor that causes produces mushroom deformation, cause air preheat poorly sealed, flue gas is mixed with air, affect the heat generation rate of air, coal in boiler is caused to can not get Thorough combustion, increase production cost, therefore, the seal arrangement of transformation air preheater, to the energy-saving and emission-reduction of power plant, reduce the wastage significant.The high temperature resistant composite of existing double-flexibility air pre-heating device sealing device is bolted on dynamic timbering, operator need use instrument high temperature resistant composite sheet could be installed to dynamic timbering in the process installing and change high temperature resistant composite, considerably increase built-up time, reduce manufacturing efficiency, improve cost of production.Current seal arrangement is diaphragm seal individual layer, and sealing effect is poor.The diaphragm seal of individual layer can cause inleakage large in air preheater, and the combustion-supporting air quantity reducing burner hearth makes combustion instability, reduces boiler output, and fly ash combustible material increases, and the possibility that back-end ductwork and air preheater catch fire increases; Increase of leaking out makes air preheater heat exchange efficiency decline, and temperature of exhaust fume raises and reduces efficiency of boiler, and coal consumption increases; When leaking out large, heat transfer original paper block up grey express delivery accelerate, thus cause gas fan, the power consumption of machine of igniting, primary air fan increase, improve station service power consumption rate; Air preheater exiting flue gas increased flow capacity flow velocity improves the rate of wear adding upstream device, decrease in efficiency.
Summary of the invention
The object of this invention is to provide a kind of double-flexibility air pre-heating device sealing device, can solve double-flexibility air pre-heating device sealing device built-up time long, manufacturing efficiency is low, the problem that cost of production is high.
The present invention for achieving the above object, be achieved through the following technical solutions: a kind of double-flexibility air pre-heating device sealing device, comprise several spring steel plate, the side of spring steel plate be arranged in parallel sealing plate, sealing plate top dynamic panel assembly is installed, dynamic panel assembly comprises L-type connecting plate, the horizontal ends of L-type connecting plate connect sealing plate end, the side of the vertical end connection torsion spring of L-type connecting plate, the opposite side of torsion spring is connected and fixed plate, the side of fixed plate arranges angle seat, angle seat while parallel with fixed plate, the side of angle seat offers screw, screw installs butterfly bolt, the screw portion of butterfly bolt is towards fixed plate, high temperature resistant composite sheet is installed between angle seat and fixed plate, high temperature resistant composite sheet is fixed on fixed plate by butterfly bolt.
In order to realize object of the present invention further, can also by the following technical solutions: fixed cover is installed on the top of described high temperature resistant composite sheet, fixed groove is offered in the bottom of fixed cover, and fixed groove coordinates with high temperature resistant composite sheet, and the top of fixed cover arranges high temperature resistant compound bar.The screw mandrel end of described butterfly bolt arranges cushion pad.Described sealing plate bottom dynamic panel assembly is installed.
The invention has the advantages that: the present invention adopts butterfly bolt to be fixed on fixed plate by high temperature resistant composite sheet, butterfly bolt carries handle, high temperature resistant composite sheet just can be fixed on fixed plate without the need to utility by operator fast, greatly reduce built-up time, improve manufacturing efficiency, reduce cost of production.High temperature resistant composite sheet of the present invention has flexibility, the sector of air preheater of can fitting more closely.Fixed cover can fixedly secure the top in high temperature resistant composite sheet, and when change high temperature resistant compound bar, fixed cover can be removed together with high temperature resistant compound bar, and the high temperature resistant composite amount that high temperature resistant compound bar uses is less; When after high temperature resistant compound bar wearing and tearing, without the need to the high temperature resistant composite sheet of integral replacing, only high temperature resistant compound bar need be changed, greatly reduce the maintenance cost of double-flexibility air pre-heating device sealing device like this.Cushion pad of the present invention can protect high temperature resistant composite sheet not scratched by the screw mandrel of butterfly bolt, avoids the damage of high temperature resistant composite sheet in installation process.Project organization of the present invention is simple, and easy for installation, good sealing effect, can control directly to leak out effectively, reduces air leak rate of air curtain, extends the cycle of the stifled ash between hot crewman.The present invention also has advantage compact, cheap for manufacturing cost and easy to use simple for structure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention; Fig. 2 is the I partial enlargement structural representation of Fig. 1; Fig. 3 is the II partial enlargement structural representation of Fig. 1.
Mark illustrates: high temperature resistant compound bar 12 fixed cover 13 fixed groove of 1 high temperature resistant composite sheet 2 angle seat 3 fixed plate 4 torsion spring 5 spring steel plate 6L type connecting plate 7 sealing plate 8 butterfly bolt 9 cushion pad 10 screw 11.
Embodiment
Double-flexibility air pre-heating device sealing device, as Fig. 1, shown in Fig. 2 and Fig. 3, comprise several spring steel plate 5, the side of spring steel plate 5 be arranged in parallel sealing plate 7, dynamic panel assembly is installed on the top of sealing plate 7, dynamic panel assembly comprises L-type connecting plate 6, the horizontal ends of L-type connecting plate 6 connect sealing plate end, the side of the vertical end connection torsion spring 4 of L-type connecting plate 6, the opposite side of torsion spring 4 is connected and fixed plate 3, the side of fixed plate 3 arranges angle seat 2, angle seat 2 while parallel with fixed plate 3, the side of angle seat 2 offers screw 10, screw 10 is installed butterfly bolt 8, the screw portion of butterfly bolt 8 is towards fixed plate 3, high temperature resistant composite sheet 1 is installed between angle seat and fixed plate 3, high temperature resistant composite sheet 1 is fixed on fixed plate 3 by butterfly bolt 8.The present invention adopts butterfly bolt 8 to be fixed on fixed plate 3 by high temperature resistant composite sheet 1, butterfly bolt 8 carries handle, high temperature resistant composite sheet 1 just can be fixed on fixed plate 3 without the need to using instrument by operator fast, greatly reduce built-up time, improve manufacturing efficiency, reduce cost of production.High temperature resistant composite sheet 1 of the present invention has flexibility, the sector of air preheater of can fitting more closely.Project organization of the present invention is simple, and easy for installation, good sealing effect, can control directly to leak out effectively, reduces air leak rate of air curtain, extends the cycle of the stifled ash between hot crewman.Controlled about 4.5% in double-flexibility air pre-heating device sealing device 1 year, 5 years are no more than 7%, and Security is reliable, inhale, send, primary air fan electric current declines thereupon.Effectively improve boiler thermal output.Torsion spring adopts inconel286, Inconel286 alloy has following characteristic: below 700 DEG C, have good corrosion-resistant and oxidation resistance, less than 650 DEG C have higher intensity, less than 540 DEG C have relaxation property preferably, also have good corrosion-resistant and enter to compile rupture strength simultaneously, mechanical property is good, applies very extensive.High temperature resistant composite sheet is 304 spring steel materials, and 0.7mm is thick, torsion spring material is 286, diameter is high temperature resistant 650 DEG C of 3mm.Sealing original paper and sector form gap-free sealed, and on spindle motor drive affect very little, do not waste extra power of motor; Adopt elasticity interconnection technique, adapt to run in the rugged environment such as high temperature, many dust, sulfur-bearing; The distortion that sealing original paper produces at any load lower rotor part of unit after adopting elasticity connection, can adapt to automatically; Seal clearance is adjustable, and in system long-play, seal clearance keeps invariable; Project organization is simple and reliable does not change preheater original structure, only needs once mounting to adjust, can make system long-play; Seriation, modularization, large-scale production, simplify field installation process, shortens the transformation duration.Double-flexibility diaphragm seal installed by footpath, air preheater Zhuan Zi 48 road, axial dividing plate, the sealing effect under different temperatures can be met, greatly reduce the air leak rate of air curtain of preheater and the safe operation of air preheater, unit air leak rate of air curtain under any load can be effectively controlled.
Because high temperature resistant composite sheet 1 is easily worn, the high temperature resistant composite sheet 1 of integral replacing is needed after high temperature resistant composite sheet 1 is worn and torn, do the maintenance cost that greatly can improve double-flexibility air pre-heating device sealing device like this, in order to reduce maintenance cost, we are in the following ways: fixed cover 12 is installed on the top of described high temperature resistant composite sheet 1, fixed groove 13 is offered in the bottom of fixed cover 12, and fixed groove 13 coordinates with high temperature resistant composite sheet 1, and the top of fixed cover 12 arranges high temperature resistant compound bar 11.Fixed cover 12 can fixedly secure the top in high temperature resistant composite sheet 1, and when change high temperature resistant compound bar 11, fixed cover 12 can be removed together with high temperature resistant compound bar 11, and the high temperature resistant composite amount that high temperature resistant compound bar 11 uses is less; After high temperature resistant compound bar 11 weares and teares, without the need to the high temperature resistant composite sheet 1 of integral replacing, only high temperature resistant compound bar 11 need be changed, greatly reduce the maintenance cost of double-flexibility air pre-heating device sealing device like this.
The screw mandrel contacted with high temperature resistant composite sheet 1 due to butterfly bolt 8 is metal material, very easily when high temperature resistant composite sheet 1 is fixed by butterfly bolt 8 high temperature resistant composite sheet 1 is scratched, and causes unnecessary waste.In order to solve the problem: the screw mandrel end of described butterfly bolt 8 arranges cushion pad 9.Cushion pad 9 of the present invention can protect high temperature resistant composite sheet 1 not scratched by the screw mandrel of butterfly bolt 8, avoids the damage of high temperature resistant composite sheet 1 in installation process.
Under static state described, the dynamic panel assembly top on sealing plate 7 top exceeds the upper sealing panel 3-5cm of air preheater, and the dynamic panel assembly distance from bottom of sealing plate 7 bottom goes out the distance 3-5cm of the lower seal plate of air preheater.In air preheater running, rotor can be bent downwardly, and now the dynamic panel assembly of sealing plate 7 upper and lower coordinates with the upper sealing panel of air preheater and lower seal plate completely.
Technological scheme of the present invention is not restricted in the scope of embodiment of the present invention.The technology contents of the not detailed description of the present invention is known technology.
Claims (4)
1. double-flexibility air pre-heating device sealing device, it is characterized in that: comprise several spring steel plate (5), the side of spring steel plate (5) be arranged in parallel sealing plate (7), dynamic panel assembly is installed on the top of sealing plate (7), dynamic panel assembly comprises L-type connecting plate (6), the horizontal ends of L-type connecting plate (6) connect sealing plate end, the side of the vertical end connection torsion spring (4) of L-type connecting plate (6), the opposite side of torsion spring (4) is connected and fixed plate (3), the side of fixed plate (3) arranges angle seat (2), angle seat (2) while parallel with fixed plate (3), the side of angle seat (2) offers screw (10), screw (10) is installed butterfly bolt (8), the screw portion of butterfly bolt (8) is towards fixed plate (3), high temperature resistant composite sheet (1) is installed between angle seat and fixed plate (3), high temperature resistant composite sheet (1) is fixed on fixed plate (3) by butterfly bolt (8).
2. double-flexibility air pre-heating device sealing device according to claim 1, it is characterized in that: fixed cover (12) is installed on the top of described high temperature resistant composite sheet (1), fixed groove (13) is offered in the bottom of fixed cover (12), fixed groove (13) coordinates with high temperature resistant composite sheet (1), and the top of fixed cover (12) arranges high temperature resistant compound bar (11).
3. double-flexibility air pre-heating device sealing device according to claim 1, is characterized in that: the screw mandrel end of described butterfly bolt (8) arranges cushion pad (9).
4. double-flexibility air pre-heating device sealing device according to claim 1, is characterized in that: dynamic panel assembly is installed in the bottom of described sealing plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286645.6A CN105202188A (en) | 2014-06-25 | 2014-06-25 | Sealing device with double flexible air pre-heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286645.6A CN105202188A (en) | 2014-06-25 | 2014-06-25 | Sealing device with double flexible air pre-heaters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105202188A true CN105202188A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410286645.6A Pending CN105202188A (en) | 2014-06-25 | 2014-06-25 | Sealing device with double flexible air pre-heaters |
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| Country | Link |
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| CN (1) | CN105202188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623672A (en) * | 2021-06-24 | 2021-11-09 | 有能集团江苏威同电气设备有限公司 | Built-in smoke and air isolation system of plug board isolation door |
-
2014
- 2014-06-25 CN CN201410286645.6A patent/CN105202188A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623672A (en) * | 2021-06-24 | 2021-11-09 | 有能集团江苏威同电气设备有限公司 | Built-in smoke and air isolation system of plug board isolation door |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20151230 |