CN204513445U - A kind of rotary regenerative air preheater flexible seal device - Google Patents
A kind of rotary regenerative air preheater flexible seal device Download PDFInfo
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- CN204513445U CN204513445U CN201520218645.2U CN201520218645U CN204513445U CN 204513445 U CN204513445 U CN 204513445U CN 201520218645 U CN201520218645 U CN 201520218645U CN 204513445 U CN204513445 U CN 204513445U
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- sealing plate
- fixed head
- supporting seat
- rod
- air preheater
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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 discloses a kind of rotary regenerative air preheater flexible seal device, comprise fixed head and sealing plate, fixed head is connected by a hinge axis with sealing plate, is provided with the punching bar cover with torque spring in hinge axis; The side of fixed head is provided with transverse slat, transverse slat is provided with supporting seat, supporting seat runs through and is provided with an adjusting screw(rod), the upper end of adjusting screw(rod) is provided with setscrew nut, lower end is provided with adjusting nut, the lower end of setscrew nut is provided with N-type holder, is provided with the limit spring be placed on adjusting screw(rod) between N-type holder and supporting seat; Sealing plate is obliquely installed towards setscrew nut, and is provided with one outside the top of sealing plate for the wear-resistant block with pre-sealed position elastic fit.The utility model reaches excellent sealing effect, effectively reduces the air leak rate of air curtain of air preheater, thus improves boiler efficiency, reduces energy consumption.
Description
Technical field
The utility model relates to a kind of rotary regenerative air preheater flexible seal device.
Background technology
Rotary regenerative air preheater is the heat-exchange energy-saving equipment of large-sized boiler, especially be widely used on thermal power station's boiler, it is the air that the flue gas heat utilizing boiler to discharge comes that preheating is about to enter boiler participation burning, by the burning of the airstrip back boiler of heating, thus improves the efficiency of boiler.Except thermal conversion efficiency, the air leak rate of air curtain of air preheater is another important indicator affecting boiler efficiency.The rotary air preheater air leak rate of excellent sealing is 5% ~ 8%, leaks out 20% ~ 30% during poor sealing.Air leak rate of air curtain is high to be sent reducing, the exerting oneself of air-introduced machine, and also reduces heat exchanger effectiveness simultaneously, affects boiler efficiency; Also can affect the reduction etc. of sulfide acid dew point, bring secondary harm.Therefore the air leak rate of air curtain effectively controlling air preheater is very necessary.Air preheater usually in working order under, rotor is partly because flue gas and airstrip walk the reciprocal change that the 200-300 degree temperature difference occurs heat, making rotor that so-called mushroom deformation occur because expanding with heat and contract with cold, can make gap between rotor and fanning strip that the reciprocal change of expansion and reduction occurs.The pressure-air that temperature is low enters flue gas system at gap.This change is rotated at air preheater and is produced once in a circle, and produce different gaps with the situation of exerting oneself of boiler and the operational situation of air preheater, when thermal power station's coal unit generally carries out desulphurization denitration, its multiple aggressive atmosphere, under ash content of coal and several work require, sealing problems faced becomes complicated.Therefore effective flexible sealing technology is the necessary means of following gap change and repairing sealing, and only having reasonably can the flexible sealing technology of permanently effective operation, could the effective air leak rate of air curtain controlling air preheater, improves boiler efficiency, reduces energy consumption.
The device regulated about sealing has multiple patented technology the sixth of the twelve Earthly Branches, but mostly cannot in response to complex environment in boiler, and the efficiency of sealing and life problems be not larger change all the time.We research and develop and release following flexible seal device on previous working foundation.
Utility model content
The utility model, in order to solve the above-mentioned deficiency of prior art, proposes a kind of rotary regenerative air preheater flexible seal device.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of rotary regenerative air preheater flexible seal device, comprise fixed head and sealing plate, described fixed head is connected by a hinge axis with sealing plate, is provided with the punching bar cover with torque spring in described hinge axis; The side of described fixed head is provided with transverse slat, described transverse slat is provided with supporting seat, described supporting seat runs through and is provided with an adjusting screw(rod), the upper end of described adjusting screw(rod) is provided with setscrew nut, lower end is provided with adjusting nut, the lower end of described setscrew nut is provided with N-type holder, is provided with the limit spring be placed on adjusting screw(rod) between described N-type holder and supporting seat; Described sealing plate is obliquely installed towards setscrew nut, and is provided with one outside the top of sealing plate for the wear-resistant block with pre-sealed position elastic fit.
Sealing plate in flexible seal device of the present utility model adopts weldering material that is embedding or that inlay corrosion-and high-temp-resistant activity to make, fixed head connects with sealing plate by hinge axis respectively, in hinge axis, punching bar cover adds torque spring and applies with pretightning force, pull two ends at stator and sealing, the power of value torque spring etc. realizes following the deformation in gap in the sealing of air preheater rotor-end and becoming.
In the back side device limit spring bolt group in sealing stiff end normal rotation direction, to limit and to compensate the improper motion of air preheater rotor, to ensure that the long-term stability of flexible seal system is run.
Compared with prior art, the rotary regenerative air preheater sealing of the most applicable large-sized boiler of the utility model uses, by the elastic deformation of limit spring, auto-compensation is carried out to the distortion of rotor, simultaneously when sealing plate rotates, self sealss plate rotates along slewing equipment outer arc tangential direction, effectively seals the gap between slewing equipment, reach excellent sealing effect, the air leak rate of air curtain of effective reduction air preheater, thus improve boiler efficiency, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, utility model is described in detail.
As shown in Figure 1, the rotary regenerative air preheater flexible seal device that the utility model proposes, comprises fixed head 1 and sealing plate 2, and fixed head 1 is connected by a hinge axis 3 with sealing plate 2, is provided with the punching bar cover with torque spring in hinge axis 3; The side of fixed head 1 is provided with transverse slat 4, and transverse slat 4 is provided with supporting seat 5, supporting seat 5 runs through and is provided with an adjusting screw(rod) 6, and the upper end of adjusting screw(rod) 6 is provided with setscrew nut 7, and lower end is provided with adjusting nut 8.
The lower end of setscrew nut 7 is provided with N-type holder 9, is provided with the limit spring 10 be placed on adjusting screw(rod) 6 between N-type holder 9 and supporting seat 5; Sealing plate 2 is obliquely installed towards setscrew nut 7, and is provided with one outside the top of sealing plate 2 for the wear-resistant block 12 with pre-sealed position 11 elastic fit.
Flexible sealing structure in the utility model, using hinge axis both as turning cylinder, also as applying the power source of following gap change.To the corrosion-and high-temp-resistant spring housing of inconel X750 nickel-base material of some circles etc. or ad eundem be had on the punching bar of hinge, and impose fixed head 1 and the two ends of sealing plate 2 that suitable pretightning force is fixed on hinge sealing, thus reach follow the cold and hot change of preheater and gap length change, form tight gapless sealing system.
In the back side device limit spring bolt group in sealing stiff end normal rotation direction, correct air preheater irregular operating and cause abnormal gap to change, compensate the elastic force of overload lower jaw torque spring.Weld at the top of sealing plate embedding or inlay high temperature resistant, anti abrasive Metal Substrate, containing MoS2, WS2, CaF2 self-lubrication alloy, reduces frictional force, reduces wear rate, improves service life.
Above-described embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the utility model patent and protection domain should be as the criterion with appended claims.
Claims (1)
1. a rotary regenerative air preheater flexible seal device, it is characterized in that: comprise fixed head (1) and sealing plate (2), described fixed head (1) is connected by a hinge axis (3) with sealing plate (2), is provided with the punching bar cover with torque spring in described hinge axis (3); The side of described fixed head (1) is provided with transverse slat (4), described transverse slat (4) is provided with supporting seat (5), described supporting seat (5) runs through and is provided with an adjusting screw(rod) (6), the upper end of described adjusting screw(rod) (6) is provided with setscrew nut (7), lower end is provided with adjusting nut (8), the lower end of described setscrew nut (7) is provided with N-type holder (9), is provided with the limit spring (10) be placed on adjusting screw(rod) (6) between described N-type holder (9) and supporting seat (5); Described sealing plate (2) is obliquely installed towards setscrew nut (7), and is provided with one outside the top of sealing plate (2) for the wear-resistant block (12) with pre-sealed position (11) elastic fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218645.2U CN204513445U (en) | 2015-04-13 | 2015-04-13 | A kind of rotary regenerative air preheater flexible seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218645.2U CN204513445U (en) | 2015-04-13 | 2015-04-13 | A kind of rotary regenerative air preheater flexible seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204513445U true CN204513445U (en) | 2015-07-29 |
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| CN201520218645.2U Active CN204513445U (en) | 2015-04-13 | 2015-04-13 | A kind of rotary regenerative air preheater flexible seal device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135466A (en) * | 2015-08-12 | 2015-12-09 | 航天科工哈尔滨风华有限公司 | Air preheater radial sealing control mechanism having over-moment protection device |
| CN105570462A (en) * | 2016-02-19 | 2016-05-11 | 江苏拓平密封科技有限公司 | Elastic contact type sealing device for rotary air preheater |
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
-
2015
- 2015-04-13 CN CN201520218645.2U patent/CN204513445U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135466A (en) * | 2015-08-12 | 2015-12-09 | 航天科工哈尔滨风华有限公司 | Air preheater radial sealing control mechanism having over-moment protection device |
| CN105570462A (en) * | 2016-02-19 | 2016-05-11 | 江苏拓平密封科技有限公司 | Elastic contact type sealing device for rotary air preheater |
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 331100 Torch Road 1, hi tech Industrial Park, Jiangxi, Fengcheng Patentee after: Jiangxi Kosen EnTech Co., Ltd. Address before: 331100 Fengcheng Industrial Park, Jiangxi, Yichun Patentee before: Scientific and technological environmental protection Co., Ltd is contained by Jiangxi Long Yuan section |