CN201137957Y - Follow-up type flexible sealing device of rotary regenerative air pre-heater - Google Patents
Follow-up type flexible sealing device of rotary regenerative air pre-heater Download PDFInfo
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- CN201137957Y CN201137957Y CNU2007201172284U CN200720117228U CN201137957Y CN 201137957 Y CN201137957 Y CN 201137957Y CN U2007201172284 U CNU2007201172284 U CN U2007201172284U CN 200720117228 U CN200720117228 U CN 200720117228U CN 201137957 Y CN201137957 Y CN 201137957Y
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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 utility model relates to a rotary type air preheater passive flexible sealing device, which belongs to the technical field of heat exchanging equipment in a heat power plant boiler unit. The rotary type air preheater passive flexible sealing device comprises a radial passive flexible sealing device, an axial passive flexible sealing device and a hoop passive flexible sealing device, a flexible sealing plate is mounted in a rotor, a ring-shaped track is mounted, the flexible sealing element and the rotor are fixedly connected, a plurality of fan-shaped plates are connected into an integral passive fan-shaped plate by a flexible plate, an ear plate is mounted on the upper end of each fan-shaped block, a main rolling wheel and a secondary rolling wheel are mounted between the ear plates, a shaft passes through the ear plate, a cooling flexible pipe is connected on one end of a hollow shaft, the internal structure of the secondary rolling wheel is that a ventilation hole is drilled on rolling wheel spoke, a high-temperature resistant bearing is mounted on the center of the rolling wheel, a breather hole is drilled on the hollow shaft, the breather hole is arranged between the spoke and a dust-proof cover. The flexible passive sealing device has stronger capacity of automatically complementing sealing gap.
Description
Technical field
The utility model relates to a kind of rotary regenerative air preheater trailing type flexible seal device, is the trailing type flexible seal device in rotary regenerative air preheater specifically, belongs to the heat-exchange apparatus technical field in the heat power plant boiler unit.
Background technology
Rotary regenerative air preheater is to utilize the hot flue gas that the coal-burning boiler afterbody is discharged in the thermal power plant, with entering a kind of heat-exchange device of boiler auxiliary combustion after the cold air heating, is used widely on modern heavy duty boiler.Rotary regenerative air preheater is owing to rotatable parts are arranged, and is gapped between rotor and fanning strip and the rotor case, bigger pressure reduction arranged, the problem that this has just brought air to leak, the problem of promptly leaking out between the air side of preheater and the fume side in flue gas simultaneously.Leaking out of rotary regenerative air preheater can cause unit heating power operating mode relatively poor, quickens the cold end corrosion process, reduces generatine set heat efficiency, increases the ventilating machinary power consumption, and boiler efficiency is reduced, and then influences 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 big, and this makes problem such as leak out more outstanding.The air leak rate of air curtain of rotary regenerative air preheater generally requires to be not more than 10% in design, but practical application much is 20～30%, sometimes even up to 40%.The main cause that rotary air preheater air leak is big is that rotor varies with temperature irregular mushroom distortion takes place, and causes between apex seal and the fanning strip, the excesssive gap between axial seal sheet and the rotor case.Air leak rate of air curtain is to weigh an important indicator of rotary regenerative air preheater technical merit.Solve at present the problem of leaking out and be in advance by the hot shaping parameter of calculating, reserve seal clearance.But, be very inaccurate according to the hot shaping parameter of calculating because the hot shaping of rotary regenerative air preheater is subjected to the several factors influence.If it is excessive to reserve seal clearance, hot operating leak out just very big; The reservation seal clearance is too small, can make between rotor and shell, the fanning strip again and scratch, and influences the normal operation of equipment.
Summary of the invention
The utility model is in order to overcome the deficiency of above-mentioned rotary regenerative air preheater sealing state, this trailing type flexible seal device not only has automatic compensation sealing gap ability, and can compensate automatically effectively because the random seal clearance that the mushroom distortion of rotary regenerative air preheater etc. cause changes.
The technical solution of the utility model is to comprise radially trailing type flexible seal device, axial trailing type flexible seal device, hoop trailing type flexible seal device.
Radially the trailing type flexible seal device comprises top seal and lower seal, flexible apex seal is installed above the rotor that rotates around central shaft, radial ringed track is installed, flexible apex seal upper end and radial ringed track upper end are on a horizontal plane, flexible apex seal is fixedlyed connected with rotor, several fan-shaped plates are connected into the trailing type fanning strip of an integral body by flexible board, otic placode is installed in each fan-shaped plate upper end, main roller is installed in the middle of otic placode, standby roller, axle is through in the otic placode, cooling tube is connected hollow shaft one end, main roller, standby roller internal structure is to be drilled with air vent on the roller spoke, at the roller center high temperature resistant bearing is installed, in the spoke both sides, two dust caps of fixed installation on the roller sagittal plane, be drilled with venthole on the dust cap, on hollow shaft, be drilled with passage, passage is between spoke and dust cap, the main roller diameter is greater than standby roller diameter 0.1-8 millimeter, main roller is on radial ringed track, on fan-shaped plate, connecting plate is installed, be welded to connect plate in central upper portion truss lower end, connection flexibly connects plate between two connecting plates; Flexible apex seal is installed below the rotor that rotates around central shaft, radial ringed track is installed, flexible apex seal lower end and radial ringed track lower end are on a horizontal plane, flexible apex seal is fixedlyed connected with rotor, several fan-shaped plates are connected into the trailing type fanning strip of an integral body by flexible board, otic placode is installed in each fan-shaped plate upper end, main roller is installed in the middle of otic placode, standby roller, axle is through in the otic placode, cooling tube is connected hollow shaft one end, main roller, standby roller internal structure is to be drilled with air vent on the roller spoke, at the roller center high temperature resistant bearing is installed, in the spoke both sides, two dust caps of fixed installation on the roller sagittal plane, be drilled with venthole on the dust cap, on hollow shaft, be drilled with passage, passage is between spoke and dust cap, the main roller diameter is greater than standby roller diameter 0.1-8 millimeter, main roller is on radial ringed track, on fan-shaped plate, connecting plate is installed, be welded to connect plate in lower central truss upper end, between two connecting plates, connect and flexibly connect plate, at lower central truss upper end weld counterweight support bar, fan-shaped plate lower end welding pole, balancing weight is installed on the counterweight support bar by hinge, and the other end of balancing weight and pole bottom are connected through the hinge; Because the gravity of balancing weight is pressed in driving wheel on the radial ringed track tightly.
Axially the trailing type flexible seal device is flexible shaft to be installed to diaphragm seal in the outside of rotor, installation shaft is to circular orbit, flexible shaft to diaphragm seal outer end and axial circular orbit outer end on same vertical arcwall face, several arc plates are connected into the arc movable head of an integral body by the arc flexible board, otic placode is installed in each arc plate outer end, main roller is installed in the middle of otic placode, standby roller, axle is through in the otic placode, cooling tube is connected hollow shaft one end, main roller, standby roller internal structure is to be drilled with air vent on the roller spoke, at the roller center high temperature resistant bearing is installed, in the spoke both sides, two dust caps of fixed installation on the roller sagittal plane, be drilled with venthole on the dust cap, be drilled with passage on hollow shaft, passage is between spoke and dust cap, and the main roller diameter is greater than standby roller diameter 0.1-8 millimeter, main roller is on axial circular orbit, and spring is installed between arc plate and the mounting.
The flexible servo sealer of hoop comprises top seal and lower seal, rotor case upper inner weld counterweight support bar, angle type sealing plate, counterweight support bar and servo-actuated hollow shaft are connected through the hinge, main roller is installed in servo-actuated hollow shaft lower end, standby roller, cooling tube is connected hollow shaft one end, main roller, standby roller internal structure is to be drilled with air vent on the roller spoke, at the roller center high temperature resistant bearing is installed, in the spoke both sides, two dust caps of fixed installation on the roller sagittal plane, be drilled with venthole on the dust cap, on the servo-actuated hollow shaft, be drilled with passage, passage is between spoke and dust cap, the main roller diameter is greater than standby roller diameter 0.1-8 millimeter, at the inboard welding of servo-actuated hollow shaft annular pressing plate, the flexible bypass seal sheet of annular is by being bolted between each annular pressing plate, flexibly connecting sheet one end is connected with angle type sealing plate, the other end is connected with annular pressing plate, balancing weight is welded on the outside of servo-actuated hollow shaft, because the gravity of balancing weight is pressed in main roller on the rotor tightly; Rotor case lower inside weld counterweight support bar, angle type sealing plate, counterweight support bar and servo-actuated hollow shaft are connected through the hinge, main roller is installed in servo-actuated hollow shaft upper end, standby roller, cooling tube is connected servo-actuated hollow shaft one end, main roller, standby roller internal structure is to be drilled with air vent on the roller spoke, at the roller center high temperature resistant bearing is installed, in the spoke both sides, two dust caps of fixed installation on the roller sagittal plane, be drilled with venthole on the dust cap, on the servo-actuated hollow shaft, be drilled with passage, passage is between spoke and dust cap, the main roller diameter is greater than standby roller diameter 0.1-8 millimeter, at the inboard welding of servo-actuated hollow shaft annular pressing plate, the flexible bypass seal sheet of annular is by being bolted between each annular pressing plate, flexibly connect sheet one end and be connected with angle type sealing plate, the other end is connected with annular pressing plate, and balancing weight is welded on the inboard of servo-actuated hollow shaft.Because the gravity of balancing weight is pressed in main roller on the rotor tightly.
The beneficial effects of the utility model are: the flexible sealing fin and the sealing plate of trailing type flexible seal device remain best clearance, adapt to because the distortion of rotor mushroom, foozle, rotor rocks, swing, the irregular variation of seal clearance that reasons such as vibration cause, realized the gap optimal seal that rotary regenerative air preheater is in operation, obviously reduced inleakage, given full play to the ability in automatic compensation sealing gap, inleakage of the present utility model is 1/5～1/10 of a conventional seals, leakage loss descends significantly, simple in structure, construction, implement, transform easily.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model rotary regenerative air preheater trailing type flexible seal device circular orbit figure.
Fig. 2 is that the trailing type fanning strip structure on the top of the utility model rotary regenerative air preheater trailing type flexible seal device apex combustion seal is partly cutd open figure.
Fig. 3 is the utility model rotary regenerative air preheater trailing type flexible seal device apex combustion seal top trailing type fanning strip A-A cutaway view.
Fig. 4 is the bottom trailing type fanning strip cutaway view of the utility model rotary regenerative air preheater trailing type flexible seal device apex combustion seal.
Fig. 5 is the utility model rotary regenerative air preheater trailing type flexible seal device axial sealer structure chart.
Fig. 6 is the utility model rotary regenerative air preheater trailing type flexible seal device axial sealer B-B cutaway view.
Fig. 7 is the utility model rotary regenerative air preheater trailing type flexible seal device hoop sealing device upper junction composition.
Fig. 8 is the utility model rotary regenerative air preheater trailing type flexible seal device bypass seal device lower junction composition.
Fig. 9 is the utility model rotary regenerative air preheater trailing type flexible seal device apex combustion seal roller structure cutaway view Amplified image.
Among the figure 1, central shaft, 2, rotor, 3, rotor case, 4, the trailing type fanning strip, 5, radial ringed track, 6, flexible apex seal, 7, flexible shaft is to diaphragm seal, and 8, axial circular orbit, 9, fan-shaped plate, 10, main roller, 11, standby roller, 12, hollow shaft, 13, flexible board, 14, flexibly connect plate, 15, the center truss, 16, pole, 17, the counterweight support bar, 18, balancing weight, 19, main roller, 20, standby roller, 21, the counterweight support bar, 22, angle type sealing plate, 23, the servo-actuated hollow shaft, 24, flexibly connect sheet, 25, the flexible bypass seal sheet of annular, 26, annular pressing plate, 27, balancing weight, 28, fixed axis, 29 servo axis, 30, balancing weight, 31, main roller, 32, standby roller, 33, hollow shaft, 34, arc plate, 35, the arc flexible board, 36, spring, 37, mounting, 38, otic placode, 39, cooling tube, 40, high temperature resistant bearing, 41, dust cap, 42, venthole, 43, passage, 44, air vent, 45 connecting plates, 46, connecting plate, 47, otic placode, 48, cooling tube, 49, high temperature resistant bearing, 50, dust cap, 51, venthole, 52, air vent, 53, passage, 54, high temperature resistant bearing, 55, dust cap, 56, air vent, 57, passage, 58, cooling tube, 59, venthole.
The specific embodiment
Rotary regenerative air preheater trailing type flexible seal device comprises radially trailing type flexible seal device; Axial trailing type flexible seal device; Hoop trailing type flexible seal device.
Radially the trailing type flexible seal device comprises top seal and lower seal, see also Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9, above the rotor 2 that rotates around central shaft 1, flexible apex seal 6 is installed, radial ringed track 5 is installed, flexible apex seal 6 upper ends and radial ringed track 5 upper ends are on a horizontal plane, flexible apex seal 6 is fixedlyed connected with rotor 2, several fan-shaped plates 9 are connected into the trailing type fanning strip 4 of an integral body by flexible board 13, otic placode 38 is installed in each fan-shaped plate 9 upper end, main roller 10 is installed in the middle of otic placode 38, standby roller 11, hollow shaft 12 is through in the otic placode 38, cooling tube 39 is connected hollow shaft 12 1 ends, main roller 10, standby roller 11 internal structures are to be drilled with air vent 44 on the roller spoke, high temperature resistant bearing 40 is installed at the roller center, in the spoke both sides, two dust caps 41 of fixed installation on the roller sagittal plane, be drilled with venthole 42 on the dust cap 41, be drilled with passage 43 at hollow shaft 12, passage 43 is between spoke and dust cap, main roller 10 diameters are greater than standby roller 11 diameter 0.1-8 millimeters, main roller 10 is on radial ringed track 5, connecting plate 45 is installed on fan-shaped plate 9, be welded to connect plate 46 in central upper portion truss 15 lower ends, at two connecting plates 45, flexibly connect plate 14 by the bolt connection between 46; Below the rotor 2 that rotates around central shaft 1, flexible apex seal 6 is installed, radial ringed track 5 is installed, flexible apex seal 6 lower ends and radial ringed track 5 lower ends are on a horizontal plane, flexible apex seal 6 is fixedlyed connected with rotor 2, several fan-shaped plates 9 are connected into the trailing type fanning strip 4 of an integral body by flexible board 13, otic placode 38 is installed in each fan-shaped plate 9 upper end, main roller 10 is installed in the middle of otic placode 38, standby roller 11, hollow shaft 12 is through in the otic placode 38, cooling tube 39 is connected hollow shaft 12 1 ends, main roller 10, standby roller 11 internal structures are to be drilled with air vent 44 on the roller spoke, high temperature resistant bearing 40 is installed at the roller center, in the spoke both sides, two dust caps 41 of fixed installation on the roller sagittal plane, be drilled with venthole 42 on the dust cap 41, be drilled with passage 43 at hollow shaft 12, passage 43 is between spoke and dust cap, main roller 10 diameters are greater than standby roller 11 diameter 0.1-8 millimeters, main roller 10 is on radial ringed track 5, connecting plate 45 is installed on fan-shaped plate 9, be welded to connect plate 46 in lower central truss 15 upper ends, at two connecting plates 45, flexibly connect plate 14 by the bolt connection between 46, at lower central truss 15 upper end weld counterweight support bars 17, fan-shaped plate 9 lower ends welding pole 16, balancing weight 18 is installed on the counterweight support bar 17 by hinge, and the other end of balancing weight 18 and pole 16 bottoms are connected through the hinge.
Axially the trailing type flexible seal device sees also Fig. 1, Fig. 5, Fig. 6, Fig. 9, flexible shaft is installed to diaphragm seal 7 in the outside of the rotor 2 that rotates around central shaft 1, installation shaft is to circular orbit 8, flexible apex seal 7 outer ends and axial circular orbit 8 outer ends are on same vertical arcwall face, several arc plates 34 are connected into the arc movable head of an integral body by arc flexible board 35, otic placode 47 is installed in each arc plate 34 outer end, main roller 31 is installed in the middle of otic placode 47, standby roller 32, hollow shaft 33 is through in the otic placode 47, cooling tube 48 is connected hollow shaft 33 1 ends, main roller 31, standby roller 32 internal structures are to be drilled with air vent 52 on the roller spoke, high temperature resistant bearing 49 is installed at the roller center, in the spoke both sides, two dust caps 50 of fixed installation on the roller sagittal plane, be drilled with venthole 51 on the dust cap 50, be drilled with passage 53 at hollow shaft 33, passage 53 is between spoke and dust cap, main roller 31 diameters are greater than standby roller 32 diameter 0.1-8 millimeters, main roller 31 is on axial circular orbit 8, and spring 36 is installed between arc plate 34 and the mounting 37.
The flexible servo sealer of hoop comprises top seal and lower seal, see also Fig. 7, Fig. 8, Fig. 9, rotor case 3 upper inner weld counterweight support bars 21, angle type sealing plate 22, counterweight support bar 21 is connected through the hinge with servo-actuated hollow shaft 23, main roller 19 is installed in servo-actuated hollow shaft 23 lower ends, standby roller 20, cooling tube 58 is connected servo-actuated hollow shaft 23 1 ends, main roller 19, standby roller 20 internal structures are to be drilled with air vent 56 on the roller spoke, high temperature resistant bearing 54 is installed at the roller center, in the spoke both sides, two dust caps 55 of fixed installation on the roller sagittal plane, be drilled with venthole 59 on the dust cap 55, be drilled with passage 57 at servo-actuated hollow shaft 23, passage 57 is between spoke and dust cap, main roller 19 diameters are greater than standby roller 20 diameter 0.1-8 millimeters, at servo-actuated hollow shaft 23 inboard welding annular pressing plates 26, the flexible bypass seal sheet 25 of annular is by being bolted between each annular pressing plate 26, flexibly connecting sheet 24 1 ends is connected with angle type sealing plate 22, the other end is connected with annular pressing plate 26, and balancing weight 27 is welded on the outside of servo-actuated hollow shaft 23; Rotor case 3 lower inside weld counterweight support bars 28, angle type sealing plate 22, counterweight support bar 28 is connected through the hinge with servo-actuated hollow shaft 29, main roller 19 is installed in servo-actuated hollow shaft 29 upper ends, standby roller 20, cooling tube 58 is connected servo-actuated hollow shaft 29 1 ends, main roller 19, standby roller 20 internal structures are to be drilled with air vent 56 on the roller spoke, high temperature resistant bearing 54 is installed at the roller center, in the spoke both sides, two dust caps 55 of fixed installation on the roller sagittal plane, be drilled with venthole 59 on the dust cap 55, be drilled with passage 57 at servo-actuated hollow shaft 29, passage 57 is between spoke and dust cap, main roller 19 diameters are greater than standby roller 20 diameter 0.1-8 millimeters, at servo-actuated hollow shaft 29 inboard welding annular pressing plates 26, the flexible bypass seal sheet 25 of annular is by being bolted between each annular pressing plate 26, flexibly connect sheet 24 1 ends and be connected with angle type sealing plate 22, the other end is connected with annular pressing plate 26, and balancing weight 30 is welded on the inboard of servo-actuated hollow shaft 29.
Claims (1)
1, a kind of rotary regenerative air preheater trailing type flexible seal device, comprise radially trailing type flexible seal device, axial trailing type flexible seal device, hoop trailing type flexible seal device, it is characterized in that: radially the trailing type flexible seal device comprises top seal and lower seal, around rotor (2) top that central shaft (1) rotates flexible apex seal (6) is installed, radial ringed track (5) is installed, flexible apex seal (6) upper end and radial ringed track (5) upper end are on a horizontal plane, flexible apex seal (6) is fixedlyed connected with rotor (2), several fan-shaped plates (9) are connected into the trailing type fanning strip (4) of an integral body by flexible board (13), otic placode (38) is installed in each fan-shaped plate (9) upper end, main roller (10) is installed in the middle of otic placode (38), standby roller (11), hollow shaft (12) is through in the otic placode (38), cooling tube (39) is connected hollow shaft (12) one ends, main roller (10), standby roller (11) internal structure is to be drilled with air vent (44) on the roller spoke, high temperature resistant bearing (40) is installed at the roller center, in the spoke both sides, fixed installation two dust caps (41) on the roller sagittal plane, be drilled with venthole (42) on the dust cap (41), be drilled with passage (43) at hollow shaft (12), passage (43) is between spoke and dust cap, main roller (10) diameter is greater than standby roller (11) diameter 0.1-8 millimeter, main roller (10) is on radial ringed track (5), go up installation connecting plate (45) at fan-shaped plate (9), be welded to connect plate (46) in central upper portion truss (15) lower end, at two connecting plates (45,46) flexibly connect plate (14) by the bolt connection between; In rotor (2) below of rotating flexible apex seal (6) is installed around central shaft (1), radial ringed track (5) is installed, flexible apex seal (6) lower end and radial ringed track (5) lower end are on a horizontal plane, flexible apex seal (6) is fixedlyed connected with rotor (2), several fan-shaped plates (9) are connected into the trailing type fanning strip (4) of an integral body by flexible board (13), otic placode (38) is installed in each fan-shaped plate (9) upper end, main roller (10) is installed in the middle of otic placode (38), standby roller (11), hollow shaft (12) is through in the otic placode (38), cooling tube (39) is connected hollow shaft (12) one ends, main roller (10), standby roller (11) internal structure is to be drilled with air vent (44) on the roller spoke, high temperature resistant bearing (40) is installed at the roller center, in the spoke both sides, fixed installation two dust caps (41) on the roller sagittal plane, be drilled with venthole (42) on the dust cap (41), be drilled with passage (43) at hollow shaft (12), passage (43) is between spoke and dust cap, main roller (10) diameter is greater than standby roller (11) diameter 0.1-8 millimeter, main roller (10) is on radial ringed track (5), go up installation connecting plate (45) at fan-shaped plate (9), be welded to connect plate (46) in lower central truss (15) upper end, between two connecting plates (45) (46), flexibly connect plate (14) by the bolt connection, at lower central truss (15) upper end weld counterweight support bar (17), fan-shaped plate (9) lower end welding pole (16), balancing weight (18) is installed on the counterweight support bar (17) by hinge, and the other end of balancing weight (18) and pole (16) bottom are connected through the hinge;
Axial trailing type flexible seal device, flexible shaft is installed to diaphragm seal (7) in the outside of the rotor (2) that rotates around central shaft (1), installation shaft is to circular orbit (8), flexible apex seal (7) outer end and axial circular orbit (8) outer end are on same vertical arcwall face, several arc plates (34) are connected into the arc movable head of an integral body by arc flexible board (35), otic placode (47) is installed in each arc plate (34) outer end, main roller (31) is installed in the middle of otic placode (47), standby roller (32), hollow shaft (33) is through in the otic placode (47), cooling tube (48) is connected hollow shaft (33) one ends, main roller (31), standby roller (32) internal structure is to be drilled with air vent (52) on the roller spoke, high temperature resistant bearing (49) is installed at the roller center, in the spoke both sides, fixed installation two dust caps (50) on the roller sagittal plane, be drilled with venthole (51) on the dust cap (50), be drilled with passage (53) at hollow shaft (33), passage (53) is between spoke and dust cap, main roller (31) diameter is greater than standby roller (32) diameter 0.1-8 millimeter, main roller (31) is on axial circular orbit (8), and spring (36) is installed between arc plate (34) and the mounting (37);
The flexible servo sealer of hoop comprises top seal and lower seal, rotor case (3) upper inner weld counterweight support bar (21), angle type sealing plate (22), counterweight support bar (21) is connected through the hinge with servo-actuated hollow shaft (23), main roller (19) is installed in servo-actuated hollow shaft (23) lower end, standby roller (20), cooling tube (58) is connected servo-actuated hollow shaft (23) one ends, main roller (19), standby roller (20) internal structure is to be drilled with air vent (56) on the roller spoke, high temperature resistant bearing (54) is installed at the roller center, in the spoke both sides, fixed installation two dust caps (55) on the roller sagittal plane, be drilled with venthole (59) on the dust cap (55), be drilled with passage (57) at servo-actuated hollow shaft (23), passage (57) is between spoke and dust cap, main roller (19) diameter is greater than standby roller (20) diameter 0.1-8 millimeter, at the inboard welding of servo-actuated hollow shaft (23) annular pressing plate (26), the flexible bypass seal sheet of annular (25) is by being bolted between each annular pressing plate (26), flexibly connecting sheet (24) one ends is connected with angle type sealing plate (22), the other end is connected with annular pressing plate (26), and balancing weight (27) is welded on the outside of servo-actuated hollow shaft (23); Rotor case (3) lower inside weld counterweight support bar (28), angle type sealing plate (22), counterweight support bar (28) is connected through the hinge with servo-actuated hollow shaft (29), main roller (19) is installed in servo-actuated hollow shaft (29) upper end, standby roller (20), cooling tube (58) is connected servo-actuated hollow shaft (29) one ends, main roller (19), standby roller (20) internal structure is to be drilled with air vent (56) on the roller spoke, high temperature resistant bearing (54) is installed at the roller center, in the spoke both sides, fixed installation two dust caps (55) on the roller sagittal plane, be drilled with venthole (59) on the dust cap (55), be drilled with passage (57) at servo-actuated hollow shaft (29), passage (57) is between spoke and dust cap, main roller (19) diameter is greater than standby roller (20) diameter 0.1-8 millimeter, at the inboard welding of servo-actuated hollow shaft (29) annular pressing plate (26), the flexible bypass seal sheet of annular (25) is by being bolted between each annular pressing plate (26), flexibly connecting sheet (24) one ends is connected with angle type sealing plate (22), the other end is connected with annular pressing plate (26), and balancing weight (30) is welded on the inboard of servo-actuated hollow shaft (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201172284U CN201137957Y (en) | 2007-10-19 | 2007-10-19 | Follow-up type flexible sealing device of rotary regenerative air pre-heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201172284U CN201137957Y (en) | 2007-10-19 | 2007-10-19 | Follow-up type flexible sealing device of rotary regenerative air pre-heater |
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| CN201137957Y true CN201137957Y (en) | 2008-10-22 |
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| CNU2007201172284U Expired - Fee Related CN201137957Y (en) | 2007-10-19 | 2007-10-19 | Follow-up type flexible sealing device of rotary regenerative air pre-heater |
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| CN102393025A (en) * | 2011-09-29 | 2012-03-28 | 岳阳钟鼎热工电磁科技有限公司 | Sealing device for continuous heat accumulating type preheater |
| CN102500868A (en) * | 2011-11-01 | 2012-06-20 | 上海锅炉厂有限公司 | Process for welding lugs on central cylinder body of horizontal preheater |
| CN102914206A (en) * | 2012-09-29 | 2013-02-06 | 江苏透平密封高科技有限公司 | Flexible contact sealing device applicable to air preheater |
| CN104534915A (en) * | 2014-12-25 | 2015-04-22 | 杨学让 | Seal equipment, rotary air pre-heater with same and seal method |
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| CN105972632A (en) * | 2016-05-06 | 2016-09-28 | 华电电力科学研究院 | System and process for protecting air preheater of coal-fired power plant from blockage and corrosion through hot-air counterflow |
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| CN106402926A (en) * | 2016-10-28 | 2017-02-15 | 中山大学 | Rotary air preheater and preheating method thereof |
| CN106439897A (en) * | 2015-10-13 | 2017-02-22 | 江苏鑫信润科技有限公司 | Air preheater automatic tracking reactive compensation three-way self-sealing device |
| 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 |
| CN110645359A (en) * | 2019-09-24 | 2020-01-03 | 航天科工哈尔滨风华有限公司电站设备分公司 | Mechanical self-correcting air preheater sealing device |
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2007
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| CN106439897A (en) * | 2015-10-13 | 2017-02-22 | 江苏鑫信润科技有限公司 | Air preheater automatic tracking reactive compensation three-way self-sealing device |
| CN105972632A (en) * | 2016-05-06 | 2016-09-28 | 华电电力科学研究院 | System and process for protecting air preheater of coal-fired power plant from blockage and corrosion through hot-air counterflow |
| CN105972632B (en) * | 2016-05-06 | 2018-08-07 | 华电电力科学研究院 | Air preheater hot wind adverse current in coal-burning power plant is anti-blocking and the system and its technique of corrosion |
| CN105937862A (en) * | 2016-06-21 | 2016-09-14 | 陕西益杰机电科技有限公司 | HDT thermal compensation follow sealing system for rotary heat exchanger |
| CN105937862B (en) * | 2016-06-21 | 2018-04-10 | 陕西益杰机电科技有限公司 | A kind of HDT thermal compensation Follow-up seal systems of heat wheel |
| CN106402926A (en) * | 2016-10-28 | 2017-02-15 | 中山大学 | Rotary air preheater and preheating method thereof |
| CN106402926B (en) * | 2016-10-28 | 2019-06-21 | 中山大学 | A kind of rotary regenerative air preheater and its pre-heating mean |
| 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 |
| CN110645359A (en) * | 2019-09-24 | 2020-01-03 | 航天科工哈尔滨风华有限公司电站设备分公司 | Mechanical self-correcting air preheater sealing device |
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Granted publication date: 20081022 Termination date: 20091119 |