CN101333572B - External sealing valve cap of hot-blast valve - Google Patents
External sealing valve cap of hot-blast valve Download PDFInfo
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- CN101333572B CN101333572B CN2008101408506A CN200810140850A CN101333572B CN 101333572 B CN101333572 B CN 101333572B CN 2008101408506 A CN2008101408506 A CN 2008101408506A CN 200810140850 A CN200810140850 A CN 200810140850A CN 101333572 B CN101333572 B CN 101333572B
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- valve gap
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Abstract
The invention discloses an outside sealing valve cap of a hot-blast valve, which comprises a valve cap body and a valve cap floating seal device, and the valve cap body is composed of steel plate welding pieces such as long flanges, a broad and a narrow standing plate, a top cover plate, supporting ribs, shoulders, radiating ribs, etc., the floating seal device is separated from the valve cap body, and is arranged on the upper part of the valve cap body. The outer shell body of the floating seal device includes a packing gland, a packing box, a pressure ring and a packing box seat sequentially arrayed; and a seal ring, a sealing ring seat, a sealing ring, an oil ring, an annular cover and an annular spring are sequentially arrayed in the shell body. The internal surfaces of all steel plate welding pieces of the valve cap are welded with anchor nails and rammed with refractory liners. The outside sealing valve cap of the hot-blast valve obviously improves the cooling effects, and has advantages of optimized structure, simple making and reduced cost compared with the valve cap of the micro-water energy-saving hot-blast valve disclosed in CN1769501. The valve cap sealing device is separate with the valve cap body and is cooled by air, and a water cavity is eliminated for reducing hidden troubles. The valve plate can bear rather big thermal shock and thermal fluctuation, and will not be damaged when being started frequently, and the valve plate is safe and economical and can extend the service life of the whole hot-blast valve.
Description
Technical field
The present invention relates to a kind of energy-saving hot blast valve using little water of blast-furnace hot-air pipe applications, particularly a kind of external sealing valve cap of hot-blast valve.
Background technology
Blast furnace ironmaking is a successive process, in order to keep the continuous operation of blast furnace ironmaking, need continual in blast furnace drum send hot blast, so every blast furnace need be provided with 3～4 hotblast stoves, what several hotblast stoves did not stop is used alternatingly.Hot blast valve is installed on the hot blast manifold between blast-furnace hot-air main pipe line and the hotblast stove, be used for hot blast main road and hotblast stove being separated in the Combustion of Hot Air Furnace phase, so hot blast valve is the hotblast stove switching device, belong to the normally-open normally-close valve according to the principle of work hot blast valve of hot blast valve.General hot blast valve was opened air-supply after 1 hour, need close 2 hours, treated Combustion of Hot Air Furnace, accumulation of heat.When hot blast valve was opened, all hot blasts were sent to blast furnace by hot blast valve, and valve gap is subjected to the hot blast radiation; When hot blast valve cut out, hot blast valve bore very big thermal load towards the side that hot blast is responsible for.Hot blast valve mainly is made up of valve gap, valve body and valve plate three-major-items.Conventional lining hot air valve cover adopts welded-steel plate construction, wide riser, narrow riser are circular arc, making and the inconvenience of ramming refractory liner, especially valve gap lamina tecti are provided with two deep holes, place the valve stem seal element, owing to be subjected to the internal heat radiation, need the sealing element cooling of supplying water is designed water cavity, complex structure, manufacture difficulty is big, has the hidden danger of leaking.CN1769501 discloses a kind of energy-saving hot blast valve using little water, and it is obvious to save water coolant, but this valve does not see that with cooling change is arranged to the setting of valve stem seal element.For this reason, the structure of improvement valve gap is necessary.
Summary of the invention
In order to solve the technical problem that above-mentioned hot blast valve exists, intend improving the valve cover structure design, the valve bonnet seal device is separated with valve gap, place valve gap top, improve hot air valve cover work-ing life, thereby a kind of new external sealing valve cap of hot-blast valve is provided.
The present invention solves the technical scheme that the prior art problem adopted:
This external sealing valve cap of hot-blast valve comprises valve gap body and valve gap floating seal, and the valve gap body is made up of steel plate weldments such as regular way orchid, wide, narrow riser, lamina tecti, brace rod, holder shoulder and radiating ribs.The valve gap floating seal separates with the valve gap body, is installed in valve gap body top.
Described valve gap floating seal places place, lamina tecti upper valve rod hole, valve gap body top.The wide riser of described valve gap body, narrow riser change straight plate into by circular-arc, are convenient to make.
Described valve gap floating seal body skin comprises packing gland, stuffing box, pressure ring and the filler cassette holder that is arranged in order; Comprise the sealing-ring, seal ring seat, wear ring, oil ring, annular casing and the ring-spring that are arranged in order in the housing.
Each steel plate weldment internal surface of described valve gap is welded with anchor nails, and ramming has refractory liner.
This micro-water energy-saving hot air valve cover has obviously improved its cooling performance, compares with the disclosed micro-water energy-saving hot air valve cover of CN1769501, and composition optimizes, simple for production, reduced cost.The valve bonnet seal device separates with the valve gap body, is subjected to air cooling, and the cancellation water cavity has reduced hidden danger.Can bear big thermal shocking and heat fluctuation, frequent starting is unlikely impaired, and is safe, economical, and the hot blast valve bulk life time is improved.
Description of drawings
Fig. 1 is a front view of the present invention
Fig. 2 is the structural representation of valve gap floating seal
Embodiment
Introduce embodiments of the invention below in conjunction with accompanying drawing.
As shown in the figure: this external sealing valve cap of hot-blast valve, comprise valve gap body 1 and valve gap floating seal 11, valve gap body 1 is made up of steel plate weldments such as regular way orchid 2, wide, narrow riser 3,4, lamina tecti 5, brace rod 6, holder shoulder 7 and radiating ribs 8.Lamina tecti is provided with floating seal connecting thread hole near the 5 upper valve rod holes.Wide riser 3, narrow riser 4 change straight plate into by circular-arc, are convenient to make.Valve gap body 1 each steel plate weldment internal surface is welded with anchor nails 10, and ramming has refractory liner 9.
Valve bonnet seal device 11 separates with valve gap body 1, is installed in valve gap body 1 top.Valve gap floating seal 11 body skiies comprise packing gland 12, stuffing box 13, pressure ring 14 and the filler cassette holder 15 that is arranged in order; Comprise the sealing-ring 16, seal ring seat 17, wear ring 18, oil ring 19, annular casing 20 and the ring-spring 21 that are arranged in order in the housing.
Claims (2)
1. the external sealing valve cap of hot-blast valve used of a hot air duct, comprise valve gap body and valve gap floating seal, the valve gap body comprises regular way orchid, wide, narrow riser, lamina tecti, brace rod, holder shoulder and radiating ribs steel plate weldment, described valve gap floating seal separates with the valve gap body, be installed in valve gap body top, it is characterized in that: described valve gap floating seal body skin comprises packing gland, stuffing box, pressure ring and the filler cassette holder that is arranged in order; Comprise the sealing-ring, seal ring seat, wear ring, oil ring, annular casing and the ring-spring that are arranged in order in the housing.
2. external sealing valve cap of hot-blast valve according to claim 1 is characterized in that: wide riser, the narrow riser of described valve gap body adopt straight plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101408506A CN101333572B (en) | 2008-07-30 | 2008-07-30 | External sealing valve cap of hot-blast valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101408506A CN101333572B (en) | 2008-07-30 | 2008-07-30 | External sealing valve cap of hot-blast valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101333572A CN101333572A (en) | 2008-12-31 |
| CN101333572B true CN101333572B (en) | 2010-12-22 |
Family
ID=40196452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101408506A Active CN101333572B (en) | 2008-07-30 | 2008-07-30 | External sealing valve cap of hot-blast valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101333572B (en) |
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2008
- 2008-07-30 CN CN2008101408506A patent/CN101333572B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101333572A (en) | 2008-12-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Li Inventor after: Zhang Jin Inventor after: Guo Yu Inventor after: Guo Shiwei Inventor after: Zhang Songtao Inventor after: Teng Weiqiang Inventor before: Wang Yinhe Inventor before: Feng Li Inventor before: Yang Guoliang Inventor before: Li Pengfei Inventor before: Dang Yong Inventor before: Guo Yu Inventor before: Teng Weiqiang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG YINHE FENG LI YANG GUOLIANG LI PENGFEI DANG YONG GUO YU TENG WEIQIANGTO: FENG LI ZHANG JIN GUO YU GUO SHIWEI ZHANG SONGTAO TENG WEIQIANG |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |