CN202238245U - Compound sealing component for coal cinder door of coal mill in power plant - Google Patents
Compound sealing component for coal cinder door of coal mill in power plant Download PDFInfo
- Publication number
- CN202238245U CN202238245U CN2011203016323U CN201120301632U CN202238245U CN 202238245 U CN202238245 U CN 202238245U CN 2011203016323 U CN2011203016323 U CN 2011203016323U CN 201120301632 U CN201120301632 U CN 201120301632U CN 202238245 U CN202238245 U CN 202238245U
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- China
- Prior art keywords
- elastic body
- compound
- composite elastic
- power plant
- cinder door
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- Expired - Fee Related
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Abstract
The utility model relates to a compound sealing component for a coal cinder door of a coal mill in a power plant, which is square in shape. Inner and outer layers of square parts are tightly clung, wherein a compound elastic seal 6 which is made of elastic materials is arranged on the outer layer; a compound elastic seal enhancing layer 7 is tightly clung to an inner layer of the compound elastic seal 6; and a plurality of compound elastic seal lips 8 are arranged on peripheral walls inside the compound elastic seal 6. The compound sealing component is the compound elastic seal which is provided with a notch and is made of the elastic materials, so that the compound sealing component can be conveniently disassembled and assembled; a compound high-temperature resistance elastic material is adopted, so that the service life of the compound sealing component for the coal cinder door of the coal mill is greatly prolonged and the maintenance cost is lowered; and the phenomena of powder leakage, ash leakage and air leakage of the coal cinder door during the use and adjusting process are eliminated, and the pollution situation of the production environment is thoroughly improved.
Description
Technical field
The utility model relates to a kind of sealing article technical field, is specifically related to a kind of seal that is used for power plant coal.
Background technology
The raw coal of steam power plant is processed into coal dust through coal pulverizer processing with raw coal, uses high temperature, high-pressure blast through the hot blast air channel coal dust to be transported to the boiler combustion Indoor Combustion.Some cinder and gangue are handled the back through coal pulverizer and are got into coal pulverizer scraper plate chamber, enter the cinder case through the cinder door again.Because of the cinder door links to each other with coal pulverizer, the hot-air of HTHP and the mixture of coal dust are arranged in the coal pulverizer; The graphite packing that existing cinder door sealing adopts; And the switch of cinder door is that (switch of controlling the cinder door is extracted and inserted to 10 ~ 30mm) rectangle plate out through the certain thickness that has on the cinder door; Very easily cause the leakage of the mixture of hot-air and coal dust; Particularly when cinder is regulated, reveal more serious.Some can directly have coal dust outwards to spray, the severe contamination production environment, and infringement staff's health, because the leakage wear equipment of coal dust causes equipment scrapping, and with the excessive loss of heat energy and kinetic energy, the maintenance that need are frequent influences the efficient of equipment.
Summary of the invention
The purpose of the utility model will overcome the above problems exactly, provide a kind of good sealing effect, long service life, easy maintenance quick, regulate power plant coal cinder door composite seal flexible, easy for installation.
The technical scheme of the utility model is achieved like this: a kind of power plant coal cinder door composite seal; Be characterized in: it is flat " mouth " font; Be close together by inside and outside two-layer " mouth " word; Outer composite elastic body sealing 6 for being processed by elastomeric material is glued with composite elastic body sealing enhancement Layer 7 at the nexine of composite elastic body sealing 6; Wall is provided with multiple tracks composite elastic body seal lip 8 around the inboard of composite elastic body sealing 6.
Because the utility model is the composite elastic body seal of being processed by the elastomer that has otch, so dismounting, easy for installation; Owing to used the complex fire resistant elastomeric material, improved the service life of coal pulverizer cinder door composite seal greatly, reduced maintenance cost; Stop the leakage powder that the cinder door can cause when using and regulate, leaked ash and leak out, fundamentally improved the pollution level of production environment.
Description of drawings
Fig. 1 is the configuration state cutaway view of existing cinder door with the graphite packing.
Fig. 2 is the user mode sketch map after Fig. 1 inserts cinder door plate.
Fig. 3 is the configuration state cutaway view of the graphite packing in the utility model alternate figures 1.
Fig. 4 is the right view of Fig. 3.
Fig. 5 is the user mode sketch map after Fig. 3 inserts cinder door plate.
Fig. 6 is the right view of Fig. 5.
Fig. 7 is the longitudinal section of the utility model.
Fig. 8 is the right view of Fig. 7.
Among the figure: 1, differential; 2, adpting flange; 3, hold-down bolt; 4, cinder door plate; 5, graphite packing; 6, composite elastic body sealing; 7, composite elastic body sealing enhancement Layer; 8, composite elastic body seal lip; 9, " return " the font cavity; 10, normal temperature and pressure district; 11, high pressure coal dust and hot-air mixed zone; 12, otch.
The specific embodiment
Like Fig. 1, shown in Figure 2; Present cinder door sealing is divided into " going back to " font cavity 9 places by cinder door plate 4 and fills out graphite packing 5 between differential 1 and adpting flange 2; The cinder door is provided with several hold-down bolts 3; Act on differential 1 through hold-down bolt 3, to regulate the tightness of sealing.Hold-down bolt 3 acts on differential 1 and compresses graphite packing 5 to reach the purpose of sealing.Because of packing does not have compensation ability; Again because of the hot-air of high temperature, high pressure and the mixture of coal dust are arranged in the cinder door; When the off-centre of cinder Men Youxiao or 4 actions of cinder door plate; Very easily cause ash, the powder of high pressure coal dust and hot-air mixed zone 11 to drain to normal temperature and pressure district 10, and cause great amount of heat energy, kinetic energy rejection and environmental pollution.
Visible from Fig. 3 and Fig. 4, the utility model that will be flat " mouth " font is inserted " returning " font cavity 9 places replacement graphite packing 5 between existing differential 1 and the adpting flange 2, uses a plurality of hold-down bolts 3 that they are compressed and is one.The utility model is close together by inside and outside two-layer " mouth " word, and outer composite elastic body sealing 6 for being processed by elastomeric material is glued with composite elastic body sealing enhancement Layer 7 at the nexine of composite elastic body sealing 6; Around " mouth " word inboard of composite elastic body sealing 6, be provided with some roads composite elastic body seal lip 8.
Visible from Fig. 5, Fig. 6; Cinder door plate 4 is inserted in " mouth " word of the utility model, the composite elastic body of the utility model nexine sealing enhancement Layer 7 can stop the bigger impurity of particle in the mixture of hot-air and coal dust of the interior high temperature in high pressure coal dust and hot-air mixed zone 11, high pressure; The interior sidewall surface lip of the outer field composite elastic body sealing 6 of the utility model is close to four walls of cinder door plate 4; 3 pairs of the utility model of hold-down bolt apply extruding force; Make composite elastic body seal four walls that 6 inboard some roads composite elastic body seal lips 8 are held slag door plate 4 more closely tightly, guarantee that high pressure coal dust and hot-air mixed zone 11 are isolated with normal temperature and pressure district 10.The outer wall dimension of the utility model is than the undersized of " returning " font cavity 9; The inwall size of composite elastic body sealing 6 is more smaller than the sectional dimension of cinder door plate 4.Under the effect of interior pressure, reach the effect of positiver sealing; Even under situation such as cinder door off-centre, wearing and tearing, all can realize not leaking ash, do not leak powder, not leak out, sealing effectiveness is fine, does not need frequent maintenance, has improved working environment, has reduced energy consumption.
Visible from Fig. 7, Fig. 8, for the ease of suit, on the utility model, have otch 12.The composite elastic body sealing enhancement Layer 7 of the utility model nexine can be processed by metal or nonmetallic materials; Composite elastic body sealing enhancement Layer 7 also can be provided with multilayer.The disconnected cross section of composite elastic body sealing 6 can be shapes such as " one " font, " X " font, " 7 " font, " C " font.Composite elastic body seals 6 outer side surfaces can be irregular, and composite elastic body seals 6 interior sidewall surface and can be cylinder, inner concave arc surface, U-shaped face, V-arrangement face, W shape face or other on-plane surfaces; Composite elastic body seals 6 outer side surfaces also can be the conical surface.Composite elastic body seal lip 8 can be U-shaped face, V-arrangement face.Composite elastic body sealing 6 and composite elastic body sealing enhancement Layer 7 at the utility model have the otch of being convenient to suit.
Claims (8)
1. power plant coal cinder door composite seal; It is characterized in that: it is flat " mouth " font; Be close together by inside and outside two-layer " mouth " word; Outer composite elastic body sealing (6) for processing by elastomeric material, the nexine that seals (6) at composite elastic body is glued with composite elastic body sealing enhancement Layer (7); Wall is provided with multiple tracks composite elastic body seal lip (8) around the inboard of composite elastic body sealing (6).
2. a kind of power plant coal cinder door composite seal according to claim 1 is characterized in that: described composite elastic body sealing (6) and composite elastic body sealing enhancement Layer (7) have the otch of being convenient to suit.
3. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: the disconnected cross section of described composite elastic body sealing (6) is " one " font.
4. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: the disconnected cross section of described composite elastic body sealing (6) is " X " font.
5. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: the disconnected cross section of described composite elastic body sealing (6) is " 7 " font.
6. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: described composite elastic body sealing (6) interior sidewall surface is a cylinder.
7. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: described composite elastic body sealing (6) outer side surface is the conical surface.
8. a kind of power plant coal cinder door composite seal according to claim 1 and 2 is characterized in that: described composite elastic body sealing enhancement Layer (7) is provided with multilayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203016323U CN202238245U (en) | 2011-08-18 | 2011-08-18 | Compound sealing component for coal cinder door of coal mill in power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203016323U CN202238245U (en) | 2011-08-18 | 2011-08-18 | Compound sealing component for coal cinder door of coal mill in power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202238245U true CN202238245U (en) | 2012-05-30 |
Family
ID=46099550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203016323U Expired - Fee Related CN202238245U (en) | 2011-08-18 | 2011-08-18 | Compound sealing component for coal cinder door of coal mill in power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202238245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709825A (en) * | 2020-12-23 | 2021-04-27 | 栾彦岭 | Composite sealing element for coal slag door of coal mill of power plant |
-
2011
- 2011-08-18 CN CN2011203016323U patent/CN202238245U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709825A (en) * | 2020-12-23 | 2021-04-27 | 栾彦岭 | Composite sealing element for coal slag door of coal mill of power plant |
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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: 20120530 Termination date: 20140818 |
|
| EXPY | Termination of patent right or utility model |