CN103421920B - Valve cover of hot blast valve - Google Patents
Valve cover of hot blast valve Download PDFInfo
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- CN103421920B CN103421920B CN201210148198.9A CN201210148198A CN103421920B CN 103421920 B CN103421920 B CN 103421920B CN 201210148198 A CN201210148198 A CN 201210148198A CN 103421920 B CN103421920 B CN 103421920B
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- side plates
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- top board
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Abstract
The invention discloses a valve cover of a hot blast valve. The valve cover includes two large side plates which are oppositely and longitudinally arranged, a top plate which is horizontally arranged and connected with the upper ends of the two large side plates, and two small side plates respectively connected with one side of one large side plate and one side of the other large side plate; the upper ends of the small side plates are both connected with the top plate; the large side plates, the top plate and the small side plates are each a single-layer steel plate; a square flange for being connected with the upper end of a valve body of the hot blast valve is arranged on the lower ends of the two large side plates and the small side plates; a space having an opening at the lower end is surrounded by the two large side plates, the top plate and the two small side plates and is used for accommodating a valve plate of the hot blast valve; the inner sides of the two large side plates, the top plate and the two small side plates are each provided with a refractory material, and the outer side of each of the two large side plates is provided with a plurality of rib plates. The valve cover of the hot blast valve has strong integral rigidity, high heat resistant strength, high thermal fatigue strength resistance and long service life, omits cooling water, and thereby saving electric energy of a water pump for providing the cooling water.
Description
Technical field
The present invention relates to a kind of valve gap, particularly relate to a kind of hot air valve cover, belong to the high temperature valve field be applied on metallurgical pipeline.
Background technology
Hot blast valve is requisite equipment in blast funnace hot blast stove pipeline.In blast furnace ironmaking, all hot blasts being sent to blast furnace all will through hot blast valve.At hotblast stove on air, hot blast valve is opened, and in the Combustion of Hot Air Furnace phase, hot blast valve cuts out, and hotblast stove and hot air duct are kept apart.Hot blast valve bears thermal convection and thermal radiation for a long time, temperatures as high 1200 DEG C ~ 1450 DEG C, and be one of worst equipment of Working environment in blast-furnace equipment, valve body is directly fixed on high-temperature pipe, bears hot stress alternation for a long time.On air, valve plate is promoted in valve gap, and valve gap medial surface toasts by high temperature valve plate, bears acid test.Therefore high performance hot air valve cover is developed, most important to the development of raising hot blast valve life-span, raising plant factor, minimizing blast furnace staying number of times, save energy, raising ironmaking efficiency, acceleration blast furnace system.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of integral rigidity is strong, high-temperature capability and heat resistive fatigue strength is high, long service life and remove water coolant, save the hot air valve cover of the energy.
In order to solve the problems of the technologies described above, present invention employs following technical scheme: a kind of hot air valve cover, comprise two pieces relatively and the large side plate longitudinally arranged, be connected to the horizontally disposed top board of two pieces of described large side plate upper ends and be connected to two blocks of little side plates of two pieces of described large side plate both sides, the upper end of two blocks of described little side plates is all connected with described top board; Described large side plate, top board and little side plate are individual layer steel plate; Two blocks of described large side plates arrange with the lower end of little side plate the square flange being used for being connected with the upper end of the valve body of hot blast valve; Two blocks of described large side plates, top board and two blocks of little side plates surround for accommodating hot blast valve valve plate and the space that lower end is uncovered; The inner side of two blocks of described large side plates, top board and two blocks of little side plates all arranges refractory materials, the multiple gusset of arranged outside of two blocks of described large side plates.
As preferably, the spacing of adjacent two the described gussets on large side plate described in every block is equal and be horizontally disposed with, and the outside surface of described gusset covers more than 2/3 of the outside surface of described large side plate.
As preferably, the cross section of described gusset is I-shaped or square hollow or rectangular hollow.
As preferably, two blocks of described large side plates are rectangle, and two blocks of described little side plates are also rectangle.
As preferably, two blocks of described large side plates are rectangle, and two blocks of described little side plates are arc, and the upper end of two blocks of described little side plates is all connected with described top board.
As preferably, two pieces of described large side plates, top boards and apply high temperature insulation layer and/or high-temperature fibre respectively between two blocks of little side plates and refractory materials.
As preferably, described refractory materials is middle fire resistant materials, and the inner side of two blocks of described large side plates, top board and two blocks of little side plates applies high temperature insulation layer, high-temperature fibre and middle fire resistant materials respectively successively.
As preferably, described refractory materials is lightweight refractory, and the inner side of two blocks of described large side plates, top board and two blocks of little side plates applies high temperature insulation layer and lightweight refractory respectively successively.
As preferably, the inner side of two blocks of described large side plates, top board and two blocks of little side plates arranges multiple high temperature alloy anchor nails for fixing described refractory materials respectively.
As preferably, the outside surface spraying high temperature insulation layer of described high temperature alloy anchor nails.
Compared with prior art, the beneficial effect of hot air valve cover of the present invention is:
1, the large side plate of hot air valve cover of the present invention, top board and two blocks of little side plates all adopt individual layer steel plate, and eliminate water coolant, thus save the electric energy of the water pump providing water coolant.Large size gusset is set outside valve gap, to strengthen rigidity and the heat radiation of valve gap.Compared with the mode simultaneously adding water coolant with the double-layer plate adopted in prior art, hot air valve cover of the present invention decreases weld seam quantity, thus reduces failure rate, substantially prolongs the work-ing life of valve gap and valve.
2, the inner side of two blocks of large side plates of hot air valve cover of the present invention, top board and two blocks of little side plates all arranges refractory materials, effectively stops heat to the transmission in valve gap, thus improves the work-ing life of valve gap.
3, when the little side plate of hot air valve cover of the present invention is arc, the setting of internal refractories is easy to; Also can increase valve gap outside surface area of dissipation simultaneously, be conducive to reducing valve cover surfaces temperature, be also beneficial to valve repair and maintenance; Also can increase the installing space between top board and the gear frame of valve in addition, be conducive to gear frame and install.
4, when the large side plate of hot air valve cover of the present invention and little side plate are rectangle, facilitate valve blanking, organize right, and convenient welding, easy handling.
5, hot air valve cover of the present invention adopts high temperature alloy anchor nails, effectively prevents the refractory materials caused because of anchor nails scaling loss from coming off, and improves the ability of valve gap opposing Under Thermal Fatigue Damage, thus improves the work-ing life of valve gap.
Accompanying drawing explanation
Fig. 1 is the part sectioned view of the embodiment one of hot air valve cover of the present invention;
Fig. 2 is the part sectioned view of the embodiment two of hot air valve cover of the present invention;
Fig. 3 is that the A-A of Fig. 1 is to fragmentary sectional view.
Description of reference numerals
1-large side plate 2-top board
3-little side plate 4-square flange
5-space 6-refractory materials
7-gusset 8-high temperature insulation layer
9-high-temperature fibre 10-anchor nails
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Embodiment one:
As shown in figures 1 and 3, a kind of hot air valve cover of embodiments of the invention, comprise two pieces relatively and the upper end of the large side plate 1 longitudinally arranged, the horizontally disposed top board 2 being connected to two pieces of large side plate 1 upper ends and two pieces little side plates, 3, two blocks of little side plates 3 of being connected to two pieces of large side plate 1 both sides be all connected with top board 2.Large side plate 1, top board 2 and little side plate 3 are individual layer steel plate.Two blocks of large side plates 1 arrange with the lower end of little side plate 3 square flange 4 being used for being connected with the upper end of the valve body of hot blast valve.Two blocks of large side plates 1, top board 2 and two pieces little side plates 3 surround for uncovered space 5, the lower end of the valve plate of accommodating hot blast valve.The inner side of two blocks of large side plates 1, top board 2 and two pieces little side plates 3 all arranges refractory materials 6, the multiple gusset 7 of arranged outside of two blocks of large side plates 1.Gusset 7 is preferably large size gusset, not only can strengthen the rigidity of valve gap but also play the effect of heat radiation.In order to play good heat radiation and really play the effect strengthening valve gap rigidity, as further preferred, the outside surface of gusset 7 covers more than 2/3 of the outside surface of large side plate 1.And the spacing of adjacent two gussets 7 on every large side plate of block 1 is equal and be horizontally disposed with.
In order to make up the problem not arranging the heat radiation deficiency that water coolant causes, the cross section of the gusset 7 of the present embodiment is I-shaped, thus adds the outside surface of gusset 7, also just adds area of dissipation, makes the radiating effect of valve gap good.Certainly, the cross section of gusset 7 can be also square hollow or rectangular hollow, also has the effect increasing heat radiation.
The hot air valve cover no-cooling-water of embodiment one, therefore saves the electric energy of the water pump providing water coolant, it also avoid the appearance of seepy question.And cause calorific loss owing to not having water coolant to take away heat, hot blast is improved on year-on-year basis by wind-warm syndrome during valve.Other two blocks of large side plates 1, top board 2 and two pieces little side plates 3 are individual layer steel plate, because this reducing weld seam quantity, reducing failure rate, substantially prolongs the work-ing life of valve gap and valve.
As shown in Figure 1, two blocks in embodiment one large side plates 1 are rectangle, and two pieces little side plates 3 are arc.The design of the little side plate 3 of arc has the following advantages: the setting being 1. easy to internal refractories 6; 2. increase the area of dissipation of valve gap outside surface, be conducive to reducing valve cover surfaces temperature, be also beneficial to valve repair and maintenance; 3. also can increase the installing space between top board 2 and the gear frame of valve in addition, be conducive to gear frame and install.
As shown in figures 1 and 3, as a kind of preferred version of embodiment one, apply high temperature insulation layer 8 or high-temperature fibre 9 respectively between two blocks of large side plates 1 and refractory materials 6, between top board 2 and refractory materials 6 and between two pieces little side plates 3 and refractory materials 6, also can apply high temperature insulation layer 8 and high-temperature fibre 9 simultaneously.The refractory materials 6 arranged in the present embodiment can be lightweight, also can be middle matter, and when adopting lightweight refractory, the inner side of large side plate 1, top board 2 and little side plate 3 is followed successively by high temperature insulation layer 8 and lightweight refractory.When adopt in fire resistant materials time, the inner side of large side plate 1, top board 2 and little side plate 3 is followed successively by high temperature insulation layer 8, high-temperature fibre 9 and lightweight refractory.
As shown in Figure 3, embodiment one be wherein coated with high-temperature fibre 9 between one block of large side plate 1 and refractory materials 6, be then coated with high temperature insulation layer 8 between the large side plate 1 of another block and refractory materials 6.As shown in Figure 1, high temperature insulation layer 8 is then coated with between little side plate 3 and refractory materials 6.
As the another kind of preferred version of embodiment one, the inner side of two blocks of large side plates 1, top board 2 and two pieces little side plates 3 arranges multiple anchor nails 10 for fixing refractory materials 6 respectively.Anchor nails 10, for grasping refractory materials 6, prevents refractory materials 6 from coming off.Anchor nails 10 adopts high temperature alloy to make, and effectively prevents coming off of the refractory materials 6 caused because of anchor nails 10 scaling loss, thus improves the ability of valve gap opposing thermal fatigue.
In addition; in the outside surface spraying high temperature insulation layer (not shown) of anchor nails 10, effectively stop high-temperature hot-air to the heat transfer of the large side plate 1 of valve plate, top board 2, little side plate 3 and anchor nails 10, improve wind pushing temperature on year-on-year basis; protect valve gap, extend the work-ing life of valve gap.
Embodiment two:
As shown in Figure 2, the large side plate 1 of embodiment two is different from the shape of the large side plate 1 in embodiment one and little side plate 3 with little side plate 3, and other structures are identical.In embodiment two, two blocks of large side plates 1 are rectangle, and two pieces little side plates 3 are also rectangle.Large side plate 1, top board 2 and little side plate 3 define the uncovered cubes in a lower end.This structure of large side plate 1 and little side plate 3 facilitate valve blanking, group to and welding, and easy handling.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (9)
1. a hot air valve cover, comprise two pieces relatively and the large side plate longitudinally arranged, be connected to the horizontally disposed top board of two pieces of described large side plate upper ends and be connected to two blocks of little side plates of two pieces of described large side plate both sides, the upper end of two blocks of described little side plates is all connected with described top board; It is characterized in that, described large side plate, top board and little side plate are individual layer steel plate; Two blocks of described large side plates arrange with the lower end of little side plate the square flange being used for being connected with the upper end of the valve body of hot blast valve; Two blocks of described large side plates, top board and two blocks of little side plates surround for accommodating hot blast valve valve plate and the space that lower end is uncovered; The inner side of two blocks of described large side plates, top board and two blocks of little side plates all arranges refractory materials, the multiple gusset of arranged outside of two blocks of described large side plates, the spacing of adjacent two the described gussets on large side plate described in every block is equal and be horizontally disposed with, and the outside surface of described gusset covers more than 2/3 of the outside surface of described large side plate.
2. hot air valve cover according to claim 1, is characterized in that, the cross section of described gusset is I-shaped or square hollow or rectangular hollow.
3. hot air valve cover according to claim 1, is characterized in that, two blocks of described large side plates are rectangle, and two blocks of described little side plates are also rectangle.
4. hot air valve cover according to claim 1, is characterized in that, two blocks of described large side plates are rectangle, and two blocks of described little side plates are arc, and the upper end of two blocks of described little side plates is all connected with described top board.
5. hot air valve cover according to claim 1, is characterized in that, two pieces of described large side plates, top boards and apply high temperature insulation layer and/or high-temperature fibre respectively between two blocks of little side plates and refractory materials.
6. hot air valve cover according to claim 5, it is characterized in that, described refractory materials is middle fire resistant materials, and the inner side of two blocks of described large side plates, top board and two blocks of little side plates applies high temperature insulation layer, high-temperature fibre and middle fire resistant materials respectively successively.
7. hot air valve cover according to claim 3, is characterized in that, described refractory materials is lightweight refractory, and the inner side of two blocks of described large side plates, top board and two blocks of little side plates applies high temperature insulation layer and lightweight refractory respectively successively.
8. hot air valve cover according to claim 1, is characterized in that, the inner side of two blocks of described large side plates, top board and two blocks of little side plates arranges multiple high temperature alloy anchor nails for fixing described refractory materials respectively.
9. hot air valve cover according to claim 8, is characterized in that, the outside surface spraying high temperature insulation layer of described high temperature alloy anchor nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148198.9A CN103421920B (en) | 2012-05-14 | 2012-05-14 | Valve cover of hot blast valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148198.9A CN103421920B (en) | 2012-05-14 | 2012-05-14 | Valve cover of hot blast valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103421920A CN103421920A (en) | 2013-12-04 |
| CN103421920B true CN103421920B (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210148198.9A Active CN103421920B (en) | 2012-05-14 | 2012-05-14 | Valve cover of hot blast valve |
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| Country | Link |
|---|---|
| CN (1) | CN103421920B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328519A (en) * | 2008-07-30 | 2008-12-24 | 世林（漯河）冶金设备有限公司 | Hot air valve cover |
| CN202766556U (en) * | 2012-05-14 | 2013-03-06 | 秦皇岛秦冶重工有限公司 | Valve cover of hot blast valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100840228B1 (en) * | 2002-07-10 | 2008-06-23 | 주식회사 포스코 | Valve for controling flux of a hot air |
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2012
- 2012-05-14 CN CN201210148198.9A patent/CN103421920B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328519A (en) * | 2008-07-30 | 2008-12-24 | 世林（漯河）冶金设备有限公司 | Hot air valve cover |
| CN202766556U (en) * | 2012-05-14 | 2013-03-06 | 秦皇岛秦冶重工有限公司 | Valve cover of hot blast valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103421920A (en) | 2013-12-04 |
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