CN203823797U - Rotary type air preheater for preventing mushroom-shaped deformation of rotor - Google Patents
Rotary type air preheater for preventing mushroom-shaped deformation of rotor Download PDFInfo
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- CN203823797U CN203823797U CN201420011336.3U CN201420011336U CN203823797U CN 203823797 U CN203823797 U CN 203823797U CN 201420011336 U CN201420011336 U CN 201420011336U CN 203823797 U CN203823797 U CN 203823797U
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- junction
- stereotyped
- dividing plate
- hot junction
- cold junction
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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 rotary type air preheater for preventing mushroom-shaped deformation of a rotor, in particular relates to a sealing device of a rotor and a sector plate in the rotary pipe air preheater, and belongs to the technical field of heat exchange equipment in the boilers of units of thermal power plants. The rotary type air preheater for preventing the mushroom-shaped deformation of the rotor comprises an independent heat-end transverse horizontal plate, a sealing spring piece, a separating bin separation plate, an independent cold-end transverse horizontal plate, etc. The rotary type air preheater for preventing the mushroom-shaped deformation of the rotor has the beneficial effects that a triangular air leakage area formed between a mushroom-shaped deformed rotor and the sector plate is effectively removed, and sealing fins at the heat end and the cold end of the rotor are kept in horizontal state all the time; in addition, the problems of the enlarged gap in the cold end and the raise of air leakage rate of the unit under low load are particularly solved, and the loss on leakage is greatly decreased; moreover, the structure is simple, and the manufacturing and restructuring construction is easily carried out.
Description
Technical field
The utility model relates to a kind of rotor the rotary regenerative air preheater that mushroom is out of shape does not occur, and relates to specifically the sealing device of rotary regenerative air preheater rotor and fanning strip, belongs to the heat-exchange apparatus technical field in the unit boiler of thermal power plant.
Background technology
Rotary regenerative air preheater is to utilize the hot flue gas that in thermal power plant, coal-burning boiler afterbody is discharged, and by entering a kind of heat-exchange device of boiler auxiliary combustion after cold air heating, on modern heavy duty boiler, is used widely.Rotary regenerative air preheater is owing to there being rotatable parts, gapped between rotor and fanning strip and rotor and arc, simultaneously between the air side of preheater and fume side, have larger pressure reduction, and this has just brought air to the problem of leaking in flue gas, i.e. Air Leakage.Leaking out of rotary regenerative air preheater can cause unit heating power operating mode variation, accelerates cold end corrosion process, reduces generatine set heat efficiency, increases ventilating machinary power consumption, and boiler efficiency is reduced, and then affects the economic benefit of unit overall operation.At present, along with the continuous increase of boiler capacity, rotary regenerative air preheater is also more and more large, and this problem such as make to leak out is more outstanding.The air leak rate of air curtain of rotary regenerative air preheater in design General Requirements is not more than 10%, but practical application is much 15～20%.To be rotor raise and irregular " mushroom distortion " occurs cause i.e. so-called " triangle leak out district " of excesssive gap between rotor and fanning strip with temperature the main cause that rotary air preheater air leak is large.The size of air leak rate of air curtain is to weigh an important indicator of rotary regenerative air preheater technical merit.Solve at present that the problem of leaking out is general adopts hard sealing, in advance by calculating hot shaping parameter, reserved seal clearance, from normal temperature---hot transitional processes, each portion gap diminishes gradually.But because the distortion between rotor and fanning strip has certain radian, preset clearance can not be too small, can produce clamping stagnation otherwise be in operation, can make to scratch between rotor and fanning strip, affect the normal operation of equipment; And a slot reservation is excessive, can not well seal again, make hot operating the leaking out will be very large.The rate of load condensate of fired power generating unit most of the time operation is 50～80%, and temperature rise does not reach predetermined value, and rotor deformation does not reach preset clearance amount, and between rotor cold junction and cold junction fanning strip, gap is large, and air leak rate of air curtain is high.
Summary of the invention
The purpose of this utility model is the deficiency in order to overcome above-mentioned rotary regenerative air preheater sealing state, there is not the rotary regenerative air preheater that mushroom is out of shape in the rotor that provides a kind of rotary regenerative air preheater hot end of rotor, cold junction diaphragm seal, with temperature rising, " mushroom distortion " do not occur, the rotary regenerative air preheater that mushroom distortion does not occur this rotor has the hot junction of making, cold junction diaphragm seal remains horizontal level state, the function that or not affected by rotor deformation.
The utility model solves the technical scheme that its technical problem adopts: the utility model comprises that to be independent of the hot junction of rotor horizontal dull and stereotyped, the horizontal dull and stereotyped grid frame in hot junction, hot junction diaphragm seal; Cold junction is horizontal dull and stereotyped, the horizontal dull and stereotyped grid frame of cold junction, cold junction diaphragm seal etc.Concrete structure is as follows:
Its structure is:
In the central tube side of rotor, hot junction horizontal stroke is dull and stereotyped and central tube is fixed and divide compartment dividing plate to be secured together by fixing hole and hot junction, between the horizontal flat board in hot junction, connects and an entirety of central tube formation by the horizontal dull and stereotyped grid frame in hot junction.Divide compartment dividing plate not to be connected from the horizontal flat board in the outside hot junction of fixing hole with hot junction, the horizontal flat board in hot junction self is in floating state; It is horizontal dull and stereotyped upper that hot junction diaphragm seal is fixed on hot junction by hot junction diaphragm seal fixed screw, and the no contact of compartment dividing plate is divided in hot junction; Hot junction divide compartment dividing plate by the horizontal dull and stereotyped through hole in hot junction divide compartment dividing plate grid frame to penetrate connecting rod with hot junction, hot junction divides compartment dividing plate grid frame to be connected, and forms an entirety with central tube; The Packing spring sheet filling of the gap between compartment dividing plate is divided in the horizontal flat board in hot junction and hot junction, prevents from leaking out; In the central tube side of rotor, cold junction horizontal stroke is dull and stereotyped and central tube is fixed and divide compartment dividing plate to be secured together by fixing hole and cold junction, between the horizontal flat board of cold junction, connects and an entirety of central tube formation by the horizontal dull and stereotyped grid frame of cold junction.Divide compartment dividing plate not to be connected from the horizontal flat board of the outside cold junction of fixing hole with cold junction, the horizontal flat board of cold junction self is in floating state; It is horizontal dull and stereotyped upper that cold junction diaphragm seal is fixed on cold junction by cold junction diaphragm seal fixed screw, and cold junction divides the no contact of compartment dividing plate; Cold junction divide compartment dividing plate by the horizontal dull and stereotyped through hole of cold junction divide compartment dividing plate grid frame to penetrate connecting rod with cold junction, cold junction divides compartment dividing plate grid frame to be connected, and forms an entirety with central tube; The horizontal flat board of cold junction and cold junction divide the Packing spring sheet filling of the gap between compartment dividing plate, prevent from leaking out.
The beneficial effects of the utility model are: by this device effectively eliminated the rotor that forms due to rotor " mushroom distortion " and fanning strip between " triangle leak out district ", rotor heat, cold junction diaphragm seal remain level, while particularly having solved unit underload, cold junction gap becomes problem large, that air leak rate of air curtain raises, leakage loss significantly declines, simple in structure, make rebuilding construction and easily implement.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model rotor overall structure schematic diagram.
Fig. 2 is the utility model rotor outboard structure enlarged diagram.
Fig. 3 is A-A cutaway view in the utility model Fig. 1.
Fig. 4 is B place enlarged diagram in the utility model Fig. 3.
In figure 1, central tube, 2, fixing hole, 3, hot junction fanning strip, 4, hot junction is horizontal dull and stereotyped, 5, the horizontal dull and stereotyped grid frame in hot junction, 6, hot junction diaphragm seal fixed screw, 7, hot junction diaphragm seal, 8, compartment dividing plate is divided in hot junction, 9, compartment dividing plate grid frame is divided in hot junction, 10, hot junction divides compartment dividing plate grid frame to penetrate connecting rod, 11, hot junction angle steel, 12, axially dividing plate, 13, axial seal sheet fixed screw, 14, cold junction angle steel, 15, cold junction divides compartment dividing plate grid frame to penetrate connecting rod, 16, cold junction divides compartment dividing plate grid frame, 17, cold junction divides compartment dividing plate, 18, cold junction diaphragm seal, 19, cold junction diaphragm seal fixed screw, 20, the horizontal dull and stereotyped grid frame of cold junction, 21, cold junction is horizontal dull and stereotyped, 22, cold junction fanning strip, 23, Packing spring sheet, 24, the horizontal dull and stereotyped through hole in hot junction, 25, the horizontal dull and stereotyped through hole of cold junction.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3, Figure 4, its structure is: in the hot junction of rotor central tube 1 side, the horizontal flat board 4 in hot junction and central tube 1 are fixing and divide compartment dividing plate 8 to be secured together by fixing hole 2 and hot junction, between hot junction horizontal dull and stereotyped 4, form an entirety by horizontal dull and stereotyped grid frame 9 connections in hot junction and central tube 1; From the outside hot junction of fixing hole 2, horizontal dull and stereotyped 4 divide compartment dividing plate 8 not to be connected with hot junction, and hot junction horizontal dull and stereotyped 4 self is in vacant state; Hot junction diaphragm seal 7 is fixed on hot junction horizontal dull and stereotyped 4 by hot junction diaphragm seal fixed screw 6, and no contact of compartment dividing plate 8 is divided in hot junction; Hot junction divide compartment dividing plate 8 by the horizontal dull and stereotyped through hole 24 in hot junction divide compartment dividing plate grid frame to penetrate connecting rod 10 with hot junction, hot junction divides compartment dividing plate grid frame 9 to be connected, and forms an entirety with central tube 1; Packing spring sheet 23 fillings of the gap between compartment dividing plate 8 are divided in hot junction horizontal dull and stereotyped 4 and hot junction, prevent from leaking out; In cold junction central tube 1 side of rotor, the horizontal flat board 21 of cold junction and central tube 1 are fixing and divide compartment dividing plate 17 to be secured together by fixing hole 2 and cold junction, between cold junction horizontal dull and stereotyped 21, form an entirety by horizontal dull and stereotyped grid frame 16 connections of cold junction and central tube 1.Divide compartment dividing plate 17 not to be connected from the outside cold junction of fixing hole 2 horizontal dull and stereotyped 21 with cold junction, cold junction horizontal dull and stereotyped 21 self is in vacant state; Cold junction diaphragm seal 18 is fixed on cold junction horizontal dull and stereotyped 21 by cold junction diaphragm seal fixed screw 19, and cold junction divides no contact of compartment dividing plate 17; Cold junction divide compartment dividing plate 17 by the horizontal dull and stereotyped through hole 25 of cold junction divide compartment dividing plate grid frame to penetrate connecting rod 15 with cold junction, cold junction divides compartment dividing plate grid frame 16 to be connected, and forms an entirety with central tube 1; Cold junction horizontal dull and stereotyped 21 and cold junction divide Packing spring sheet 23 fillings of the gap between compartment dividing plate 17, prevent from leaking out.
Working method is:
When cigarette temperature rises to 330 from normal temperature---400 DEG C of hot end of rotor divide compartment dividing plate 8 to produce " mushroom distortion ", when mushroom distortion occurs, hot junction horizontal dull and stereotyped 4 keeps level, hot junction divides compartment dividing plate 8, hot junction to divide compartment dividing plate grid frame 9, lattice storehouse, hot junction dividing plate grid frame to penetrate connecting rod 10 entirety to bottom offset, on the horizontal flat board in hot junction, have the horizontal dull and stereotyped through hole 24 in hot junction, the aperture of the horizontal dull and stereotyped through hole 24 in hot junction is greater than lattice storehouse, hot junction dividing plate grid frame and penetrates the downward displacement of connecting rod 10; Hot junction horizontal dull and stereotyped 4 and a point compartment dividing plate 8 are not connected, and hot junction horizontal dull and stereotyped 4 is in isothermal region, can not produce bending, so the hot junction diaphragm seal 7 being arranged on hot junction horizontal stroke flat board 4 is straight line all the time; Hot junction is divided between compartment dividing plate 8 and hot junction horizontal dull and stereotyped 4 Packing spring sheet 23; Cold junction situation is basically identical with it; When cigarette temperature is from 330---when 400 DEG C of warm areas drop to normal temperature, situation is contrary with above-mentioned situation.
Claims (1)
1. there is not the rotary regenerative air preheater that mushroom is out of shape in a rotor, comprise the horizontal flat board in hot junction, point compartment dividing plate, Packing spring sheet, the horizontal flat board of cold junction, it is characterized in that: in the hot junction of rotor central tube (1) side, hot junction horizontal dull and stereotyped (4) and central tube (1) fix and pass through fixing hole (2) and hot junction divides compartment dividing plate (8) to be secured together, and pass through the hot junction dull and stereotyped grid frame of horizontal stroke (9) connection and an entirety of central tube (1) formation between hot junction horizontal dull and stereotyped (4); Divide compartment dividing plate (8) not to be connected from the outside hot junction of fixing hole (2) horizontal dull and stereotyped (4) with hot junction, the horizontal flat board in hot junction (4) self is in vacant state; It is upper that hot junction diaphragm seal (7) is fixed on hot junction horizontal dull and stereotyped (4) by hot junction diaphragm seal fixed screw (6), and no contact of compartment dividing plate (8) is divided in hot junction; Hot junction divide compartment dividing plate (8) by the horizontal dull and stereotyped through hole in hot junction (24) divide compartment dividing plate grid frame to penetrate connecting rod (10) with hot junction, hot junction divides compartment dividing plate grid framves (9) to be connected, with an entirety of central tube (1) formation; Packing spring sheet (23) filling of the gap between compartment dividing plate (8) is divided in hot junction horizontal dull and stereotyped (4) and hot junction, prevents from leaking out; In cold junction central tube (1) side of rotor, cold junction horizontal dull and stereotyped (21) and central tube (1) fix and pass through fixing hole (2) and cold junction divides compartment dividing plate (17) to be secured together, and pass through the cold junction dull and stereotyped grid frame of horizontal stroke (16) connection and an entirety of central tube (1) formation between cold junction horizontal dull and stereotyped (21); Divide compartment dividing plate (17) not to be connected from the outside cold junction of fixing hole (2) horizontal dull and stereotyped (21) with cold junction, cold junction horizontal dull and stereotyped (21) self is in vacant state; It is upper that cold junction diaphragm seal (18) is fixed on cold junction horizontal dull and stereotyped (21) by cold junction diaphragm seal fixed screw (19), and cold junction divides no contact of compartment dividing plate (17); Cold junction divide compartment dividing plate (17) by the horizontal dull and stereotyped through hole of cold junction (25) divide compartment dividing plate grid frame to penetrate connecting rod (15) with cold junction, cold junction divides compartment dividing plate grid framves (16) to be connected, and forms an entirety with central tube 1; Cold junction horizontal dull and stereotyped (21) and cold junction divide Packing spring sheet (23) filling of the gap between compartment dividing plate (17), prevent from leaking out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011336.3U CN203823797U (en) | 2014-01-08 | 2014-01-08 | Rotary type air preheater for preventing mushroom-shaped deformation of rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011336.3U CN203823797U (en) | 2014-01-08 | 2014-01-08 | Rotary type air preheater for preventing mushroom-shaped deformation of rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823797U true CN203823797U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420011336.3U Expired - Fee Related CN203823797U (en) | 2014-01-08 | 2014-01-08 | Rotary type air preheater for preventing mushroom-shaped deformation of rotor |
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| Country | Link |
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| CN (1) | CN203823797U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087905A (en) * | 2017-12-19 | 2018-05-29 | 航天科工哈尔滨风华有限公司电站设备分公司 | Boiler air preheater umbrella rib type apex combustion seal |
| CN110762551A (en) * | 2018-07-25 | 2020-02-07 | 湖北金奥特节能环保科技有限公司 | Air preheater invariant constant rate of leaking out sealing device that warp |
-
2014
- 2014-01-08 CN CN201420011336.3U patent/CN203823797U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087905A (en) * | 2017-12-19 | 2018-05-29 | 航天科工哈尔滨风华有限公司电站设备分公司 | Boiler air preheater umbrella rib type apex combustion seal |
| CN108087905B (en) * | 2017-12-19 | 2019-07-05 | 航天科工哈尔滨风华有限公司电站设备分公司 | Boiler air preheater umbrella rib type apex combustion seal |
| CN110762551A (en) * | 2018-07-25 | 2020-02-07 | 湖北金奥特节能环保科技有限公司 | Air preheater invariant constant rate of leaking out sealing device that warp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |