CN110553278A - Follow-up sealing device for rotary air preheater - Google Patents
Follow-up sealing device for rotary air preheater Download PDFInfo
- Publication number
- CN110553278A CN110553278A CN201910946794.3A CN201910946794A CN110553278A CN 110553278 A CN110553278 A CN 110553278A CN 201910946794 A CN201910946794 A CN 201910946794A CN 110553278 A CN110553278 A CN 110553278A
- Authority
- CN
- China
- Prior art keywords
- air
- plate
- air preheater
- reference positioning
- rotary air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims 1
- 230000005489 elastic deformation Effects 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 39
- 230000008859 change Effects 0.000 description 10
- 238000005507 spraying Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 5
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2230/00—Sealing means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The follow-up sealing device for the rotary air preheater comprises a circular reference positioning disc (1) and an elastic supporting device, wherein an air injection pipe (2) is arranged near the end surface of the reference positioning disc (1), an air outlet of the air injection pipe (2) faces the end surface of the reference positioning disc (1), and an air inlet of the air injection pipe (2) is communicated with an air outlet of an air supply pipe (3); an inflation cavity (5) is arranged in the elastic supporting device, an air inlet of the air supply pipe (3) is communicated with a pressure relief opening of the inflation cavity (5), and the inflation cavity (5) can be elastically deformed under the action of external force. The follow-up sealing device for the rotary air preheater can keep the gap between the bottom end of the rotor and the cold end sector plate in an optimized state, effectively reduces the air leakage amount at the gap between the bottom end of the rotor and the cold end sector plate, obviously improves the heat exchange efficiency of the rotary air preheater, and greatly reduces the heat loss of exhaust smoke and the power loss of an induced draft fan.
Description
Technical Field
The invention relates to a follow-up sealing device for a rotary air preheater.
Background
The rotary air preheater can transfer the heat exchange in the hot flue gas discharged by boiler combustion to the air input into the boiler combustion chamber, when the rotary air preheater is in operation, the flue gas flows from top to bottom, and the air flows from bottom to top, so that the upper part of the rotor of the air preheater is high in temperature, the lower part of the rotor of the air preheater is low in temperature, and the rotor is deformed like mushroom, that is, when the rotary air preheater starts to work normally, the outer side of the bottom of the rotor which is originally horizontal can droop by about 50mm, and the droop amount can have a fluctuation range of 5 mm-16 mm in the normal operation process of the rotary air preheater, and the droop can change the gap between the bottom ends of the rotors relative to the cold end plates for dynamic sealing.
In order to reduce the gap between the bottom end of the rotor and the cold end sector plate for dynamic sealing, the inner end of the cold end sector plate of the existing rotary air preheater can be installed on a rack through a sector plate positioning pin shaft, the outer end of the cold end sector plate is fixed by using a long bolt and a lock nut, when a test is installed, the gap between the cold end sector plate and the outer end of the bottom of the rotor can be adjusted through the lock nut, after the height of the gap is reserved according to the maximum amount of mushroom-shaped deformation, the outer end of the cold end sector plate is fixed by using the long bolt and the lock nut, and therefore the problem of gap sealing caused by gap change caused by thermal deformation of the rotor is solved.
The height of the gap is reserved according to the maximum amount of mushroom-shaped deformation, the gap between the bottom end of the rotor and the cold end sector plate is large, air leakage at the gap is large, large energy loss can be caused, and the heat exchange efficiency of the rotary air preheater is remarkably reduced. If the gap is reduced to adapt to the deformation when the mushroom deformation is small, the friction between the bottom end of the rotor and the cold end sector plate can be caused when the mushroom deformation is maximum, and related components are damaged, so that the rotary air preheater can not normally operate.
The air leakage between the bottom end of the rotor and the cold end fan-shaped plate can increase the heat loss of exhaust smoke and the power consumption of an induced draft fan, and when the air leakage is serious, the air quantity fed into the boiler to participate in combustion is insufficient, so that the output of the boiler is directly influenced.
disclosure of Invention
The invention aims to provide a follow-up sealing device for a rotary air preheater, which can keep the gap between the bottom end of a rotor and a cold end sector plate in an optimized state, effectively reduce the air leakage rate at the gap between the bottom end of the rotor and the cold end sector plate, obviously improve the heat exchange efficiency of the rotary air preheater and greatly reduce the heat loss of exhaust smoke and the power loss of an induced draft fan.
The follow-up sealing device for the rotary air preheater comprises an annular reference positioning disc and an elastic supporting device, wherein an air injection pipe is arranged near the end surface of the reference positioning disc, an air outlet of the air injection pipe faces the end surface of the reference positioning disc, and an air inlet of the air injection pipe is communicated with an air outlet of an air supply pipe; the elastic support device is characterized in that an inflation cavity is arranged in the elastic support device, an air inlet of the air supply pipe is communicated with a pressure relief opening of the inflation cavity, the inflation cavity can be elastically deformed under the action of external force, and an inflation cavity air inlet is formed in the wall of the inflation cavity.
Preferably, the air inlet of the inflation cavity is communicated with a pressure air source through an air inlet gas circuit in series connection with a control valve, the axis of the reference positioning disc is located in the vertical direction, an air injection pipe is arranged above the end face of the reference positioning disc, an air outlet of the air injection pipe faces the upper end face of the reference positioning disc, and the top of the elastic supporting device can reciprocate in the vertical direction.
Preferably, the elastic supporting device comprises a bottom plate, the periphery of the bottom plate is connected with the bottom seal of the annular lower side plate, the top end of the lower side plate is connected with the bottom seal of the annular telescopic part, the top end of the telescopic part is connected with the bottom seal of the annular upper side plate, the top end of the upper side plate is connected with the top plate or the sector plate of the rotary air preheater in a sealing manner, the inflation cavity is formed by the bottom plate, the annular lower side plate, the annular telescopic part, the annular upper side plate and the top plate, or the inflation cavity is formed by the bottom plate, the annular lower side plate, the annular telescopic part, the annular upper side plate and the sector plate of the rotary air preheater.
Preferably, the control valve is a constant flow regulating valve, and the cross section of the air inflation cavity along the horizontal direction is fan-shaped or rectangular or circular.
Preferably, the telescopic part is made of elastic rubber or an arc-shaped spring piece.
Preferably, the reference positioning disc and the rotor of the rotary air preheater are coaxially arranged, the reference positioning disc is sleeved and fixed on the outer circumferential surface of the rotor, the air injection pipe is fixedly connected with the upper part of the elastic supporting device or a sector plate of the rotary air preheater, the outer end of the sector plate can do swinging motion around a sector plate positioning pin shaft, and the axis of the sector plate positioning pin shaft is positioned in the horizontal direction.
Preferably, the gas lance is a telescopic tube.
When the servo sealing device for the rotary air preheater is used, when a reference positioning disc fixed on a rotor starts to move close to an air outlet of an air injection pipe along with the mushroom-shaped deformation of the rotor, the air outlet of the air injection pipe is very close to the upper end surface of the reference positioning disc, the amount of pressure air sprayed out of the air outlet of the air injection pipe in unit time is reduced, so that the pressure in an air inflation cavity is increased, the top of an elastic supporting device is enabled to jack up the outer end of a sector plate until the outer end enters a stress balance state, and the servo sealing on the gap change caused by the mushroom-shaped deformation of the rotor is realized by adjusting the height of the outer end of the sector plate; when the reference positioning disc fixed on the rotor begins to move away from the gas outlet of the gas spraying pipe along with the mushroom-shaped deformation of the rotor, the gas outlet of the gas spraying pipe can be enabled to be synchronously away from the upper end face of the reference positioning disc, the amount of pressure gas sprayed out of the gas outlet of the gas spraying pipe in unit time can be rapidly increased, therefore, the pressure in the gas filling cavity can be reduced, the height of the top of the elastic supporting device is reduced under the pressing action of the outer end of the sector plate until the top of the elastic supporting device enters a stress balance state, and accordingly the follow-up sealing is achieved through the adjustment of the height of the outer end of the sector plate to the gap change caused by the mushroom-shaped deformation of. Therefore, the follow-up sealing device for the rotary air preheater can keep the gap between the bottom end of the rotor and the cold end sector plate in an optimized state, effectively reduce the air leakage rate at the gap between the bottom end of the rotor and the cold end sector plate, obviously improve the heat exchange efficiency of the rotary air preheater and greatly reduce the heat loss of exhaust smoke and the power loss of an induced draft fan.
Further details and features of the follower seal for a rotary air preheater according to the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings.
Drawings
FIG. 1 is a front sectional view of a schematic structure of a servo sealing device for a rotary air preheater according to the present invention;
FIG. 2 is a front sectional view of the follower sealing device for a rotary air preheater according to the present invention in an installed and used state.
Detailed Description
When the rotary air preheater is in operation, smoke flows from top to bottom, and air flows from bottom to top, so that the upper temperature of a rotor of the air preheater is high, the lower temperature of the rotor of the air preheater is low, and the rotor is deformed like mushroom, but the deformation process is slow, and the time from the start of the rotary air preheater to the completion of the deformation of the rotor due to uneven heating usually needs more than 24 hours. When the rotary air preheater starts to work normally, the outer side of the bottom of the rotor, which should be horizontal, sags about 50mm, and the sag amount has a fluctuation range of 5 mm-16 mm in the normal operation process of the rotary air preheater, the period of the fluctuation is usually more than 5 hours, and the sagging deformation can change the gap between the bottom end of the rotor and each cold end sector plate for dynamic sealing.
As shown in fig. 1 and 2, the follow-up sealing device for the rotary air preheater of the present invention comprises a circular reference positioning disk 1 and an elastic supporting device, wherein an air injection pipe 2 is arranged near the end surface of the reference positioning disk 1, the air injection pipe 2 is a telescopic pipe, the air outlet of the air injection pipe 2 faces the end surface of the reference positioning disk 1, the distance between the air outlet of the air injection pipe 2 and the upper end surface of the reference positioning disk 1 can be adjusted to be 1 mm-5 mm, and the air inlet of the air injection pipe 2 is communicated with the air outlet of an air supply pipe 3; an inflation cavity 5 is arranged in the elastic supporting device, an air inlet of the air supply pipe 3 is communicated with a pressure relief opening of the inflation cavity 5, the inflation cavity 5 can be elastically deformed under the action of external force, and an inflation cavity air inlet 6 is arranged on the wall of the inflation cavity 5.
When the servo sealing device for the rotary air preheater is used, the reference positioning disc 1 can be sleeved and fixed at the bottom end of the outer circumferential surface of a rotor 15 of the rotary air preheater, the air outlet of the gas injection pipe 2 positioned near the end surface of the reference positioning disc 1 faces the end surface of the reference positioning disc 1, the inner end of the sector plate 14 at the cold end of the rotary air preheater can be arranged on a frame through a sector plate positioning pin shaft, the outer end of the sector plate 14 is not fixed any more, the elastic supporting device is fixed on a bottom end supporting beam 18 of the rotary air preheater, the top of the elastic supporting device is tightly attached to the lower end surface of the sector plate 14 at the cold end of the rotary air preheater, pressure gas is filled into the inflatable cavity 5 through the inflatable cavity air inlet 6 arranged on the wall of the inflatable cavity 5, the elastic supporting device can jack up the sector plate 14 due to the pressure gas filled into the inflatable cavity 5, thereby, the sector plate 14 is supported by the elastic supporting device, and the pressure gas in the inflation cavity 5 flows out through the pressure relief opening of the inflation cavity 5, the gas supply pipe 3 and the gas injection pipe 2 and is injected onto the upper end surface of the reference positioning disc 1.
For the three-compartment rotary air preheater, the number of the sector plates at the cold end of the three-compartment rotary air preheater is 3, the external force downwards pressing the top of the elastic supporting device is mainly from the pressure of primary air and secondary air which pass through the rotor 15 and act on the sector plates 14 and the weight of the sector plates 14, and the resultant force of the actions forms the main acting force pressing the top of the elastic supporting device. Because the mushroom-shaped deformation speed of the rotor 15 is relatively slow, and the deformation amount is relatively small, the device of the invention can realize the follow-up sealing of the clearance change caused by the mushroom-shaped deformation of the rotor by adjusting the height of the outer end of the sector plate 14, and the specific working principle is as follows:
When the reference positioning disc 1 fixed on the rotor 15 starts to move close to the gas outlet of the gas spraying pipe 2 along with the mushroom-shaped deformation of the rotor, the gas outlet of the gas spraying pipe 2 is enabled to be very close to the upper end face of the reference positioning disc 1, the amount of pressure gas sprayed out of the gas outlet of the gas spraying pipe 2 in unit time is reduced, therefore, the pressure in the gas filling cavity 5 is enabled to rise, the top of the elastic supporting device is enabled to jack up the outer end of the sector plate 14 upwards until the outer end enters a stress balance state, and accordingly the follow-up sealing is achieved for the gap change caused by the mushroom-shaped deformation of the rotor by adjusting the height of the outer end of the sector plate 14.
When the reference positioning disc 1 fixed on the rotor 15 starts to move away from the gas outlet of the gas injection pipe 2 along with the mushroom-shaped deformation of the rotor, the gas outlet of the gas injection pipe 2 is enabled to be synchronously away from the upper end face of the reference positioning disc 1, the amount of pressure gas sprayed out of the gas outlet of the gas injection pipe 2 in unit time can be rapidly increased, therefore, the pressure in the gas-filled cavity 5 can be reduced, the top of the elastic supporting device can be lowered in height under the pressing action of the outer end of the sector plate 14 until the rotor enters a stress balance state, and accordingly the follow-up sealing of the gap change caused by the mushroom-shaped deformation of the rotor by adjusting the height of the outer end of the sector plate 14 is achieved.
When the reference positioning disc 1 fixed on the rotor 15 does not move, and the top of the elastic supporting device jacks up the outer end of the sector plate 14 only due to the pressure rise in the air inflation cavity 5, the air outlet of the air injection pipe 2 is enabled to be synchronously far away from the upper end face of the reference positioning disc 1, the amount of pressure air sprayed out from the air outlet of the air injection pipe 2 in unit time can be rapidly increased, so that the pressure in the air inflation cavity 5 can be reduced, the elastic supporting device can be enabled to be reduced in height under the pressing action of the outer end of the sector plate 14 until the elastic supporting device enters a stress balance state, and accordingly, the follow-up sealing can be performed on the gap change caused by the mushroom-shaped deformation of the rotor by adjusting the height of the outer end of the sector plate 14.
When the reference positioning disc 1 fixed on the rotor 15 does not move, and the top of the elastic supporting device is lowered under the pressing action of the outer end of the sector plate 14 only due to the pressure reduction in the inflatable cavity 5, the gas outlet of the gas spraying pipe 2 is enabled to be very close to the upper end face of the reference positioning disc 1, the amount of pressure gas sprayed out of the gas outlet of the gas spraying pipe 2 in unit time is reduced, so that the pressure in the inflatable cavity 5 is increased, the top of the elastic supporting device is enabled not to be lowered continuously, but enters a stress balance state, and accordingly the follow-up sealing of the gap change caused by the mushroom-shaped deformation of the rotor is achieved by adjusting the height of the outer end of the sector plate 14.
As a further improvement of the invention, an air inlet of the inflation cavity 5 is communicated with a pressure air source through an air inlet gas path 8 connected in series with a control valve 7, an axis of the reference positioning disc 1 is positioned in the vertical direction, an air injection pipe 2 is arranged above an end surface of the reference positioning disc 1, an air outlet of the air injection pipe 2 faces to the upper end surface of the reference positioning disc 1, and the top of the elastic supporting device can reciprocate along the vertical direction.
As a further improvement of the present invention, the elastic supporting device comprises a bottom plate 9, the periphery of the bottom plate 9 is connected with the bottom end seal of a lower annular plate 10, the top end of the lower annular plate 10 is connected with the bottom end seal of an annular telescopic part 11, the top end of the telescopic part 11 is connected with the bottom end seal of an upper annular plate 12, the top end of the upper annular plate 12 is connected with a top plate 13 or a sector plate 14 of the rotary air preheater in a sealing manner, and the inflation cavity 5 is formed by the surrounding of the bottom plate 9, the lower annular plate 10, the annular telescopic part 11, the upper annular plate 12 and the top plate 13, or the inflation cavity 5 is formed by the surrounding of the bottom plate 9, the lower annular plate 10, the annular telescopic part 11, the upper annular plate 12 and the sector plate 14 of the rotary air preheater.
As a further improvement of the invention, the control valve 7 is a constant flow regulating valve, and the cross section of the inflation cavity 5 along the horizontal direction is fan-shaped or rectangular or circular.
As a further improvement of the present invention, the extendable part 11 is made of elastic rubber or a curved spring plate.
As a further improvement of the invention, the reference positioning disk 1 and a rotor 15 of the rotary air preheater are coaxially arranged, the reference positioning disk 1 is sleeved and fixed on the outer circumferential surface of the rotor 15, the gas injection pipe 2 is fixedly connected with the upper part of the elastic supporting device or a sector plate 14 of the rotary air preheater, the outer end of the sector plate 14 can do swinging motion around a sector plate positioning pin shaft 17, and the axis of the sector plate positioning pin shaft 17 is positioned in the horizontal direction.
Claims (7)
1. The follow-up sealing device for the rotary air preheater is characterized by comprising a circular reference positioning disc (1) and an elastic supporting device, wherein an air injection pipe (2) is arranged near the end surface of the reference positioning disc (1), the air outlet of the air injection pipe (2) faces the end surface of the reference positioning disc (1), and the air inlet of the air injection pipe (2) is communicated with the air outlet of an air supply pipe (3); the utility model discloses a flexible support device, including elastic support device, be equipped with in the elastic support device and aerify cavity (5), the air inlet of air supply pipe (3) communicates with each other with the pressure release mouth of aerifing cavity (5), aerifys cavity (5) and can be elastic deformation under the effect of external force, is equipped with on the wall of aerifing cavity (5) and aerifys cavity air inlet (6).
2. The follow-up sealing device for the rotary air preheater according to claim 1, wherein an air inlet of the inflation cavity (5) is communicated with a pressure air source through an air inlet gas path (8) connected with a control valve (7) in series, an axis of the reference positioning disk (1) is located in a vertical direction, an air injection pipe (2) is arranged above an end surface of the reference positioning disk (1), an air outlet of the air injection pipe (2) faces to an upper end surface of the reference positioning disk (1), and the top of the elastic support device can reciprocate along the vertical direction.
3. A follow-up seal device for a rotary air preheater according to claim 2, wherein the elastic support means comprises a bottom plate (9), the periphery of the bottom plate (9) is sealingly connected to the bottom end of an annular lower side plate (10), the top end of the lower side plate (10) is sealingly connected to the bottom end of an annular telescopic portion (11), the top end of the telescopic portion (11) is sealingly connected to the bottom end of an annular upper side plate (12), the top end of the upper side plate (12) is sealingly connected to a top plate (13) or a sector plate (14) of the rotary air preheater, the inflation cavity (5) is defined by the bottom plate (9), the annular lower side plate (10), the annular telescopic portion (11), the annular upper side plate (12) and the top plate (13), or the inflation cavity (5) is defined by the bottom plate (9), the annular lower side plate (10), the annular telescopic portion (11), An annular upper side plate (12) and a sector plate (14) of the rotary air preheater are formed around.
4. Servo seal for a rotary air preheater according to claim 3, wherein the control valve (7) is a constant flow control valve and the cross section of the plenum chamber (5) in the horizontal direction is fan-shaped or rectangular or circular.
5. follow-up seal for rotary air preheaters according to claim 4, wherein the retractable part (11) is made of elastic rubber or curved spring leaf.
6. The servo sealing device for the rotary air preheater according to claim 5, wherein the reference positioning plate (1) is coaxially arranged with the rotor (15) of the rotary air preheater, the reference positioning plate (1) is fixed on the outer circumferential surface of the rotor (15) in a sleeved manner, the gas injection pipe (2) is fixedly connected with the upper part of the elastic supporting device or the sector plate (14) of the rotary air preheater, the outer end of the sector plate (14) can swing around the sector plate positioning pin shaft (17), and the axis of the sector plate positioning pin shaft (17) is located in the horizontal direction.
7. Follow-up seal for a rotary air preheater according to any one of claims 1 to 6, characterised in that the gas lance (2) is a telescopic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946794.3A CN110553278A (en) | 2019-10-07 | 2019-10-07 | Follow-up sealing device for rotary air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946794.3A CN110553278A (en) | 2019-10-07 | 2019-10-07 | Follow-up sealing device for rotary air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110553278A true CN110553278A (en) | 2019-12-10 |
Family
ID=68742250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910946794.3A Pending CN110553278A (en) | 2019-10-07 | 2019-10-07 | Follow-up sealing device for rotary air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110553278A (en) |
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|---|---|---|---|---|
| KR100969828B1 (en) * | 2010-04-30 | 2010-07-13 | 에이스테크(주) | Rotary valve assembly for voc heat recycling burning system and heat recycling burning system with it |
| CN103032884A (en) * | 2012-12-31 | 2013-04-10 | 黄辉 | Sealing device of rotary air pre-heater |
| CN206131050U (en) * | 2016-11-10 | 2017-04-26 | 济南华邦电力设备有限公司 | Regenerative air preheater's trailing type sector plate device |
| CN206145712U (en) * | 2016-08-31 | 2017-05-03 | 戴春喜 | Regenerative air preheater and seal structure thereof |
| CN207050554U (en) * | 2017-08-04 | 2018-02-27 | 四川大智工程技术有限公司 | A kind of air preheater gas film sealing device |
| RU183467U1 (en) * | 2017-10-24 | 2018-09-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | DEVICE FOR RADIAL SEALS OF REGENERATIVE AIR HEATERS |
| CN210568550U (en) * | 2019-10-07 | 2020-05-19 | 孟金来 | Follow-up sealing device for rotary air preheater |
-
2019
- 2019-10-07 CN CN201910946794.3A patent/CN110553278A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100969828B1 (en) * | 2010-04-30 | 2010-07-13 | 에이스테크(주) | Rotary valve assembly for voc heat recycling burning system and heat recycling burning system with it |
| CN103032884A (en) * | 2012-12-31 | 2013-04-10 | 黄辉 | Sealing device of rotary air pre-heater |
| CN206145712U (en) * | 2016-08-31 | 2017-05-03 | 戴春喜 | Regenerative air preheater and seal structure thereof |
| CN206131050U (en) * | 2016-11-10 | 2017-04-26 | 济南华邦电力设备有限公司 | Regenerative air preheater's trailing type sector plate device |
| CN207050554U (en) * | 2017-08-04 | 2018-02-27 | 四川大智工程技术有限公司 | A kind of air preheater gas film sealing device |
| RU183467U1 (en) * | 2017-10-24 | 2018-09-24 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петрозаводский государственный университет" | DEVICE FOR RADIAL SEALS OF REGENERATIVE AIR HEATERS |
| CN210568550U (en) * | 2019-10-07 | 2020-05-19 | 孟金来 | Follow-up sealing device for rotary air preheater |
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