CN203273100U - Heat-engine plant coal dropping tube sealing flange - Google Patents
Heat-engine plant coal dropping tube sealing flange Download PDFInfo
- Publication number
- CN203273100U CN203273100U CN 201320289658 CN201320289658U CN203273100U CN 203273100 U CN203273100 U CN 203273100U CN 201320289658 CN201320289658 CN 201320289658 CN 201320289658 U CN201320289658 U CN 201320289658U CN 203273100 U CN203273100 U CN 203273100U
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- Prior art keywords
- flange
- angle iron
- lower angle
- flange disc
- heat
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- Expired - Fee Related
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Abstract
The utility model relates to a heat-engine plant coal dropping tube sealing flange which comprises an upper angle iron flange disc, a lower angle iron flange disc, an industrial rubber sealing ring and an installation bolt hole. The upper angle iron flange disc and the lower angle iron flange disc are used in a matched mode, an inner steel ring boss same with the upper angle iron flange disc in shape is arranged between the inner edge of the working face of the upper angle iron flange disc and the installation bolt hole, an outer steel ring boss same with the lower angle iron flange disc in shape is arranged between the outer edge of the working face of the lower angle iron flange disc and the installation bolt hole, and the size of the inner steel ring boss is the same as that of the outer steel ring boss. According to the heat-engine plant coal dropping tube sealing flange, after the upper angle iron flange disc and the lower angle iron flange disc which correspond to each other are installed in a combined mode, the steel ring bosses at the inner edges and the outer edges of the working faces of the flange discs, gaps in the working faces of the flange discs and grooves in the working faces of the flange discs are matched to have the labyrinth sealing effect. Meanwhile, the heat-engine plant coal dropping tube sealing flange contributes to fixation of the industrial rubber sealing ring. Compared with a sealing ring, the inner steel ring boss has the advantages of being higher in abrasive resistance when being in direct contact with pulverized coal. The heat-engine plant coal dropping tube sealing flange has the advantages of being easy to manufacture and convenient to construct. The pulverized coal is effectively prevented from being leaked, the working environment in a forwarding station is improved, the service life of the flange is prolonged, and the operation cost is reduced.
Description
Technical field
The utility model belongs to the fuel dropping pipe field that is tightly connected, and is specifically related to a kind of thermal power plant fuel dropping pipe sealing flange.
Background technique
Domestic thermal power plant fuel dropping pipe adpting flange mainly adopts two angle steel flange dishes to connect at present, and pads certain thickness nonmetal diaphragm seal between two flange plate, is bolted connection at last.This Placement is fairly simple, but sealing effect is poor, its former because: 1) in coaling system when operation, can cause the fuel dropping pipe vibration, flange connected loosening; 2) nonmetal diaphragm seal intensity is low, and coal dust constantly weares and teares nonmetal diaphragm seal and causes coal dust to be revealed, and causes the working environment of producing waste and severe exacerbation workshop, increases labor cleaning's cost.
Summary of the invention
The purpose of this utility model is to provide a kind of durable and efficient thermal power plant fuel dropping pipe sealing flange, reduces the leakage of coal dust in running, improves working environment and reduces labor cleaning's workload.
The technical solution of the utility model is, a kind of thermal power plant fuel dropping pipe sealing flange, comprise and also be useful on the construction bolt hole that bolt fastener is installed on two matching used upper and lower angle steel flange dishes, industrial rubber seal ring, flange plate, be provided with the interior steel loop boss identical with the flange plate shape of working surface between the inward flange of upper angle steel flange dish working surface and construction bolt hole, also be provided with the outer steel loop boss identical with the flange plate shape of working surface between the outward edge of lower angle steel flange dish working surface and construction bolt hole, inside and outside steel loop boss measure-alike.Inside and outside steel loop boss adopts band steel to make.
In order to obtain better labyrinth seal effect, also be provided with the groove identical with the flange plate shape of working surface on upper and lower angle steel flange card and/or inside and outside steel loop boss face.
The utility model has the advantage of: after two corresponding upper and lower angle steel flange dish combinations are installed, the steel loop boss at the inside and outside edge of flange plate working surface and the gap of flange plate working surface have the labyrinth sealing effect, in order to obtain better labyrinth seal effect, also be provided with at least one groove identical with the flange plate shape of working surface on upper and lower angle steel flange card and/or inside and outside steel loop boss face in addition; The chamber of inside and outside steel loop boss and flange surface formation simultaneously also helps to fix two industrial rubber seal rings between flange plate.The steel loop boss of flange plate working surface inward flange is compared with seal ring, has when directly contacting coal dust stronger wear resistance is arranged.When coaling system moves, it is loosening that the fuel dropping pipe vibration makes flange be fastenedly connected, Speed Reduction in the steel loop boss of coal dust infiltration flange plate working surface inward flange and the gap of flange plate working surface, enlarge by the groove clearance volume, coal dust speed is further reduced, and then a part of coal dust sedimentation, form labyrinth seal effectively; The coal dust that another part oozes out still can effectively stop by the industrial rubber seal ring, and the coal dust of sedimentation and industrial rubber seal ring have been realized the selfsealings of flange jointly; The gap of outer steel loop boss and flange plate working surface is to prevent from that coal dust from revealing to play final guarantee.
The utility model is made simple, easy construction.Not only effectively prevent the coal dust leakage, improved working environment in transfer station; And can extend working life of flange, reduce operating cost.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 1 partial sectional view;
In figure: 1. fuel dropping pipe, 2. go up the angle steel flange dish, 3. descend the angle steel flange dish, 4. interior steel loop boss, 5. outer steel loop boss, 6. industrial rubber seal ring, 7 bolt fasteners, 8. construction bolt hole, 9 grooves.
Embodiment
Fuel dropping pipe 1 joint adopts angle steel flange dish 2 to connect by bolt fastener 7 with lower angle steel flange dish 3, respectively at the inward flange of upper angle steel flange dish 2 and construction bolt 8, the hole interior steel loop boss 4 that is welded with wide 10mm, thick 5mm; At the outward edge of lower angle steel flange dish 3 and construction bolt 8, the hole outer steel loop boss 5 that also is welded with wide 10mm, thick 5mm, also be provided with at least one groove 9 identical with the flange plate shape of working surface on upper angle steel flange card 2, lower angle steel flange card 3 and/or interior steel loop boss face 4, outer steel loop boss face 5; Simultaneously place the thick industrial rubber seal ring 6 of 5～6mm in the chamber that interior steel loop boss 4, outer steel loop boss 5 and flange plate form, be fastenedly connected with the sealing flange of bolt fastener 7 with this construction bolt hole 8 at last.
Interior steel loop boss 4, interior steel loop boss 5 adopt band steel to make.
Claims (2)
1. thermal power plant's fuel dropping pipe sealing flange, comprise and also be useful on the construction bolt hole that bolt fastener is installed on two matching used upper and lower angle steel flange dishes, industrial rubber seal ring, upper and lower angle steel flange dish working surface, it is characterized in that: be provided with the interior steel loop boss identical with the flange plate shape of working surface between the inward flange of upper angle steel flange dish working surface and construction bolt hole, also be provided with the outer steel loop boss identical with the flange plate shape of working surface between the outward edge of lower angle steel flange dish working surface and construction bolt hole, inside and outside steel loop boss measure-alike.
2. thermal power plant as claimed in claim 1 fuel dropping pipe sealing flange, is characterized in that: also be provided with the groove identical with the flange plate shape on upper and lower angle steel flange card and/or inside and outside steel loop boss face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289658 CN203273100U (en) | 2013-05-24 | 2013-05-24 | Heat-engine plant coal dropping tube sealing flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320289658 CN203273100U (en) | 2013-05-24 | 2013-05-24 | Heat-engine plant coal dropping tube sealing flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203273100U true CN203273100U (en) | 2013-11-06 |
Family
ID=49503510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320289658 Expired - Fee Related CN203273100U (en) | 2013-05-24 | 2013-05-24 | Heat-engine plant coal dropping tube sealing flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203273100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662579A (en) * | 2018-04-19 | 2018-10-16 | 东方电气集团东方锅炉股份有限公司 | The structure for preventing turbulent burner coal dust from revealing |
-
2013
- 2013-05-24 CN CN 201320289658 patent/CN203273100U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662579A (en) * | 2018-04-19 | 2018-10-16 | 东方电气集团东方锅炉股份有限公司 | The structure for preventing turbulent burner coal dust from revealing |
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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: 20131106 Termination date: 20160524 |