CN105889525B - A kind of online cleaning type butterfly valve for blast furnace gas pipeline - Google Patents
A kind of online cleaning type butterfly valve for blast furnace gas pipeline Download PDFInfo
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- CN105889525B CN105889525B CN201610452238.7A CN201610452238A CN105889525B CN 105889525 B CN105889525 B CN 105889525B CN 201610452238 A CN201610452238 A CN 201610452238A CN 105889525 B CN105889525 B CN 105889525B
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- arc
- valve
- wind pipe
- shape wind
- blast furnace
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of online cleaning type butterfly valves for blast furnace gas pipeline, including valve plate, valve seat, valve body and valve rod, two side flange of valve body is connect with blast furnace gas pipeline, the lower half portion inner wall of valve body inlet end is equipped with arc-shape wind pipe, arc-shape wind pipe is placed at the contact surface of valve plate and valve seat, the curved surfaces of arc-shape wind pipe are equipped with air holes, it is closed by end cap at the both ends of arc-shape wind pipe, the middle part of arc-shape wind pipe is equipped with straight air hose, straight air hose is connected to arc-shape wind pipe, straight air hose passes through the side wall of valve body, and it is connect with the source nitrogen outside valve body through connecting tube, pressure-regulating valve is equipped between source nitrogen and connecting tube.Main Basiss high pressure nitrogen of the present invention is blown afloat dust is deposited, and in pipeline under the mobilization of blast furnace gas, dust is sucked away, and is realized that high efficiency, automation, specific aim and the low cost of the interior deposition dust of blast furnace gas pipeline are online and is removed.
Description
Technical field
The invention belongs to blast furnace gas pipeline dust clearance technique fields, especially a kind of to be used for blast furnace gas pipeline,
Online cleaning type butterfly valve is carried out to pipeline inner sealing surface deposition dust.
Background technology
In ironmaking processes, the air by preheating is blown into from the air port positioned at bottom house, and the oxygen in air is in high temperature
Coke gasification reaction in lower and blast furnace generates CO, to remove the oxygen in iron ore and restore iron, and the gas after reacting
Referred to as blast furnace gas.The ingredient of blast furnace gas is mainly CO2, CO and N2, and contain vapor, dust（Main component Fe2O3）Deng
Substance.The ventilation quantity of blast furnace gas pipeline needs to be adjusted with metal sealing valve with pressure, usually three-eccentric-butterfly-valve, with true
Protect the maintenance of the normal production status of blast furnace.Dust in blast furnace gas is easily in pipeline butterfly valve seat sealing surface bottom deposit, in water
It is also easy to produce hardened phenomenon under the action of steam, causes the casey of butterfly valve plate, leads to the forfeiture of its pressure adjusting function, serious shadow
Ring the movable progress of blast furnace ironmaking.
At this stage, for the removing of blast furnace gas pipeline butterfly valve seat sealing surface bottom deposit dust, more traditional side
Method mainly has scraper plate scraping, artificial rapping, increase blast furnace periodical repair frequency etc., has low the degree of automation, inefficiency, manpower consumption
Fei Gao, the shortcomings of normal production procedure is influenced；Relatively advanced method mainly uses high gravity dedusting technology, but has dedusting
Complex procedures, it is of high cost, easily cause blast furnace gas pipeline corrosion the problems such as.203768385 U of utility model CN disclose one kind
Valve is arranged at nitrogen flow in pipes, controls nitrogen using nitrogen as working media for blast furnace gas pipeline dust blow device
Injection；The device can realize the efficient purging that dust is deposited to blast furnace gas pipeline, but the device is not sealed with butterfly valve seat
The deposition dust of face bottom is to clean object, and the specific aim that cannot achieve the area deposition dust is removed.
Above-mentioned existing blast furnace gas pipeline deposition dust clearance technique and device, can not achieve butterfly valve seat sealing surface
High efficiency, automation, specific aim and the low cost of bottom deposit dust are removed.Therefore, it is necessary to a kind of novel butterfly valve is developed,
Dust can be deposited to blast furnace gas pipeline butterfly valve seat sealing surface and carry out on-line automatic removing, solved the prior art and device is deposited
The problem of.
Invention content
The technical problem to be solved in the present invention is to provide a kind of online cleaning type butterfly valve for blast furnace gas pipeline, the butterflies
Valve can realize the high efficiency of deposition dust in blast furnace gas pipeline, automation, specific aim and the online removing of low cost.
In order to solve the above technical problems, the technical solution used in the present invention is：It is a kind of to exist for blast furnace gas pipeline
Line cleaning type butterfly valve, including valve plate, valve seat, valve body and valve rod, two side flange of valve body are connect with blast furnace gas pipeline,
It is characterized in that the lower half portion inner wall of the valve body inlet end be equipped with arc-shape wind pipe, the arc-shape wind pipe be placed in valve plate and
At the contact surface of valve seat, the curved surfaces of arc-shape wind pipe are equipped with air holes, and the both ends of arc-shape wind pipe are closed by end cap, arc wind
The middle part of pipe is equipped with straight air hose, and straight air hose is connected to arc-shape wind pipe, and the straight air hose passes through the side wall of valve body, and through connection
It manages and is connect with the source nitrogen outside valve body, pressure-regulating valve is equipped between source nitrogen and connecting tube.
Above structure is further qualified, the arc-shape wind pipe is stainless steel, the radius of curvature of arc-shape wind pipe
It is slightly less than the outer radii of valve plate, the radian of arc-shape wind pipe is 100-150 °, and arc-shape wind pipe is according to symmetrical point of perpendicular
Cloth.
Above structure is further qualified, the air holes includes more than two radial air holes and axial air holes, diameter
To air holes and the equal equidistantly distributed of axial air holes, the radial air holes is set to the smaller medial surface of arc-shape wind pipe curvature, and diameter
The axle center of valve body is directed toward to air holes, the axial air holes is equipped on the side of valve plate, and axial air holes be directed toward valve seat with
The intersection of valve body.
Above structure is further qualified, the radial air holes and axial air holes interlaced arrangement.
Above structure is further qualified, the pressure-regulating valve is equipped with the adjusting for adjusting the nitrogen amount of feeding
Handwheel is rotatably to coordinate between the adjusting handle and pressure-regulating valve, and pressure is equipped in the exit of pressure-regulating valve
Table.
Above structure is further qualified, is metal sealing between the straight air hose and body wall.
It is using advantageous effect caused by above-mentioned technical proposal：The present invention inside butterfly valve by being arranged arc wind
Pipe, arc-shape wind pipe are connect with external elevated pressure nitrogen air source, are blown afloat the deposition dust for accumulating in body base using high pressure nitrogen,
In pipeline under the mobilization of blast furnace gas, dust is sucked away, to achieve the effect that dust is removed automatically, the remove device
The problems such as cost consumption existing for existing dust clearance technique is high, dust-removing process is complicated can be solved, realizes butterfly valve seat sealing
High efficiency, automation, specific aim and the low cost of face bottom deposit dust are removed；In addition, remove device in the present invention can be with
Realize it is online remove dust, need to only the regulation handle of outside be utilized to adjust nitrogen pressure, can be realized when opening valve pair
Dust purging is deposited, pipeline or equipment downtime is not needed, avoids influencing normal production procedure.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the general structure schematic diagram of the present invention；
Fig. 2 is the schematic diagram of arc-shape wind pipe structure in the present invention；
In figure：1, arc-shape wind pipe；1-1, radial air holes；1-2, straight air hose；1-3, end cap, 1-4, axial air holes；2, it connects
Pipe；3, pressure-regulating valve；3-1, adjusting handle；4, source nitrogen；5, valve seat；6, valve plate；7, valve body；8, valve rod；9, blast furnace gas
Pipeline, 10, pressure gauge.
Specific implementation mode
Present invention relates particularly to a kind of online cleaning type butterfly valves for blast furnace gas pipeline, as shown in Fig. 1, the butterfly valve
Specifically include valve plate 6, valve seat 5, valve body 7, valve rod 8 and the automatic ash removing device on butterfly valve, 7 liang of side flanges of valve body with height
Producer gas pipeline 9 connects, and forms the connector of butterfly valve and blast furnace gas pipeline 9, and blast furnace gas can be controlled by butterfly valve.
The automatic ash removing device of the present invention includes arc-shape wind pipe 1, source nitrogen 4 and pressure-regulating valve 2, since the lower half portion of butterfly valve is easy
Dust is deposited, therefore arc-shape wind pipe 1 is set to the lower half portion of 7 inlet end of valve body, and is fixed on inner wall, arc-shape wind pipe 1
It is placed at the contact surface of valve plate 6 and valve seat 5, i.e. butterfly valve seat sealing surface.In order to realize towards blowout at butterfly valve seat sealing surface
High pressure nitrogen is equipped with air holes on the curved surfaces of arc-shape wind pipe 1, and the both ends of arc-shape wind pipe 1 are closed by end cap 1-3, arc
The middle part of air hose 1 is equipped with straight air hose 1-2, and straight air hose 1-2 is connected to arc-shape wind pipe 1, and straight air hose 1-2 passes through the side wall of valve body 7, and
And connect with the source nitrogen 4 outside valve body 7, it is equipped with pressure-regulating valve 3 between source nitrogen 4 and straight air hose 1-2.
It is that arc-shape wind pipe 1 supplies high pressure nitrogen by source nitrogen 4, since the position of arc-shape wind pipe is arranged in above structure
The exactly easy build-up areas of dust utilizes the elevated pressure nitrogen of the air port blowout of arc-shape wind pipe in this way in the case where valve plate 6 is opened
Gas blows afloat deposition dust, and in pipeline under the mobilization of blast furnace gas, dust is sucked away, to reach dust removing
Effect.In addition, the nitrogen pressure adjusting in the present invention is placed in outside valve body 7, adjusted manually by pressure-regulating valve 3, in this way
Normal operation in blast furnace gas pipeline can not be influenced, online ash removal may be implemented, avoids influencing normal production procedure, drop simultaneously
The failure rate of low butterfly valve.
Arc-shape wind pipe 1 in the present invention is stainless steel, and the radius of curvature of arc-shape wind pipe 1 is slightly less than the outer ring of valve plate 6
The radian of radius, arc-shape wind pipe 1 is 100-150 °, and arc-shape wind pipe 1 is according to the symmetrical distribution of perpendicular.Stainless steel
Arc-shape wind pipe 1 has high temperature resistant, corrosion resistant characteristic, for that in blast furnace gas, can improve service life.In addition, arc wind
The radian of pipe 1 is set, and is, when blast furnace gas is close to butterfly valve, to have the trend of sedimentation according to dust stratification aggregation zone in butterfly valve, because
Arc-shape wind pipe is arranged in the lower half portion of valve body 7 in this, and radian controls within the scope of 100-150 °, and both sides are symmetrical, can be with
It preferably to the dust stratification because of gravitational settling, is blown afloat under the action of high pressure nitrogen, avoids settling, to realize the purpose of deashing.
The dust stratification at butterfly valve seal face is cleared up in order to realize, avoids influencing valve opening and closing, to air holes
Structure is designed, and as shown in Fig. 2, air holes includes more than two radial direction air holes 1-1 and axial air holes 1-4, and diameter is aweather
Hole 1-1 and the axial direction equal equidistantly distributeds of air holes 1-4, radial air holes 1-1 are set to the smaller medial surface of 1 curvature of arc-shape wind pipe, and diameter
The axle center of butterfly valve is directed toward to air holes 1-1, axial air holes 1-4 is equipped on the side of valve plate 6, and axial air holes 1-4 is directed toward valve
The intersection of seat 5 and valve body 7.The dust stratification because of gravitational settling is blown afloat using radial air holes 1-1, utilizes axial air holes 1-4
Dust stratification at sealing surface is purged, lays air holes in two key positions in this way, while avoiding dust stratification sedimentation and product
Ash is to the stuck of valve.
It can also clearly see in fig 2, radial air holes 1-1 and axial air holes 1-4 interlaced arrangements, i.e., in two diameters
To an axial air holes 1-4 is arranged between air holes 1-1, it is to consider the structure of arc-shape wind pipe 1, and to be easy to add to be arranged so
Work.
In fig. 1, the adjusting handle 3-1 for adjusting the nitrogen amount of feeding, adjusting handle are equipped on pressure-regulating valve 3
It is rotatably to coordinate between 3-1 and pressure-regulating valve 3, pressure gauge 10 is equipped in the exit of pressure-regulating valve 3.Utilize pressure tune
Valve 3 is saved to control pressure size and the opening and closing of dedusting nitrogen, handwheel 3-1 is set, is used for the feeding of accuracy controlling pressure-regulating valve 3
Amount, that is, accurately control the size of dedusting nitrogen pressure.
Since the temperature of blast furnace gas is higher, the sealing pair between 8 side wall of straight air hose 1-2 and valve body cannot use common
Rubber seal, therefore metal sealing is selected, it is consolidated between straight air hose 1-2 and valve body 8, this avoid internal blast furnace gases not
Leakage, while ensureing service life.
Below in conjunction with the accompanying drawings, it by taking 600mm three-eccentric-butterfly-valves as an example, elaborates to the course of work of the present invention.
As shown in Figure 1 and Figure 2, core of the invention component is arc-shape wind pipe 1, is set as stainless steel, radius of curvature
For 290mm, radian is 120 °, and internal-and external diameter is respectively 20 mm and 26 mm；A diameter of 8mm of air holes 1-1, is spaced 15 °,
The even radial circular arc plane of symmetry both sides for being distributed in arc-shape wind pipe 1, share 8；The internal-and external diameter of straight air hose 1-2 be respectively 19 mm and
25 mm are distributed in inside and outside blast furnace gas pipeline 9, connect arc-shape wind pipe 1 and connecting tube 2；Arc-shape wind pipe end cap 1-3
In the both ends of arc-shape wind pipe 1, play the role of 1 both ends of closed arc-shape wind pipe.Arc-shape wind pipe 1 and straight air hose 1-2 pass through welding
Mode is fixed on butterfly valve upstream, the i.e. left side of butterfly valve plate 6, the inside of blast furnace gas pipeline 9, the spacing with sealing surface of seat 5
For 100 mm, wherein straight air hose 1-2 is through inside and outside blast furnace gas pipeline 9.
The blast furnace gas generated in ironmaking processes is emitted into blast furnace gas pipeline 9 by Top of BF, flows through butterfly valve plate 6
When, the dust mixed is hindered, gradually falls to the bottom in butterfly valve seal face 5.If removed not in time, in the effect of vapor
Under, easy to produce it is hardened, block butterfly valve plate 6 opening and closing campaign, lead to the failure of butterfly valve pressure adjusting function.According to blast furnace coal
Blast furnace gas pressure 0.25Mpa and dust pass through pressure in the settlement law of 5 bottom of butterfly valve plate sealing surface in feed channel 9
The outlet pressure of source nitrogen 4 is adjusted to 0.25~0.30MPa by regulating valve 3, every the set time（3 hours）, inflated with nitrogen 60S.
Under the percussion of high pressure nitrogen, the dust for being deposited on 5 bottom of butterfly valve plate sealing surface is broken up, and in the stream of blast furnace gas
Under action is used, butterfly valve is passed through, butterfly valve downstream is reached, to realize blast furnace gas pipeline butterfly valve seat sealing surface bottom deposit dust
Automatically the purpose removed.
Claims (4)
1. a kind of online cleaning type butterfly valve for blast furnace gas pipeline, including valve plate（6）, valve seat（5）, valve body（7）And valve rod
（8）, the valve body（7）Two side flanges are and blast furnace gas pipeline（9）Connection, it is characterised in that the butterfly valve is three eccentricity butterfly
Valve, the valve body（7）The lower half portion inner wall of inlet end is equipped with arc-shape wind pipe（1）, the arc-shape wind pipe（1）It is placed in valve plate
（6）And valve seat（5）Contact surface at, arc-shape wind pipe（1）Curved surfaces be equipped with air holes, arc-shape wind pipe（1）Both ends pass through
End cap（1-3）Closing, arc-shape wind pipe（1）Middle part be equipped with straight air hose（1-2）, straight air hose（1-2）With arc-shape wind pipe（1）Connection,
The straight air hose（1-2）Across valve body（7）Side wall, and through connecting tube（2）With in valve body（7）External source nitrogen
（4）Connection, in source nitrogen（4）And connecting tube（2）Between be equipped with pressure-regulating valve（3）；The arc-shape wind pipe（1）For stainless steel
Material, arc-shape wind pipe（1）Radius of curvature be slightly less than valve plate（6）Outer radii, arc-shape wind pipe（1）Radian be 100 °-
150 °, arc-shape wind pipe（1）According to the symmetrical distribution of perpendicular；The air holes includes more than two radial air holes（1-
1）With more than two axial air holes（1-4）, radial air holes（1-1）With axial air holes（1-4）Equal equidistantly distributed, the diameter
To air holes（1-1）Set on arc-shape wind pipe（1）The smaller medial surface of curvature, and radial air holes（1-1）It is directed toward valve body（7）Axle center,
The axial air holes（1-4）Equipped with close to valve plate（6）Side on, and axial air holes（1-4）It is directed toward valve seat（5）With valve body
（7）Intersection.
2. a kind of online cleaning type butterfly valve for blast furnace gas pipeline according to claim 1, it is characterised in that described
Radial air holes（1-1）With axial air holes（1-4）Interlaced arrangement.
3. a kind of online cleaning type butterfly valve for blast furnace gas pipeline according to claim 1, it is characterised in that described
Pressure-regulating valve（3）It is equipped with the adjusting handle for adjusting the nitrogen amount of feeding（3-1）, the adjusting handle（3-1）With
Pressure-regulating valve（3）Between be rotatably to coordinate, in pressure-regulating valve（3）Exit be equipped with pressure gauge（10）.
4. a kind of online cleaning type butterfly valve for blast furnace gas pipeline according to claim 1, it is characterised in that described
Straight air hose（1-2）With valve body（7）It is metal sealing between side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610452238.7A CN105889525B (en) | 2016-06-22 | 2016-06-22 | A kind of online cleaning type butterfly valve for blast furnace gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610452238.7A CN105889525B (en) | 2016-06-22 | 2016-06-22 | A kind of online cleaning type butterfly valve for blast furnace gas pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105889525A CN105889525A (en) | 2016-08-24 |
| CN105889525B true CN105889525B (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610452238.7A Active CN105889525B (en) | 2016-06-22 | 2016-06-22 | A kind of online cleaning type butterfly valve for blast furnace gas pipeline |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115350497B (en) * | 2017-01-19 | 2024-06-11 | 张家港市新贝机械有限公司 | Dehumidification crystallization system for shredding sheets |
| CN110274034A (en) * | 2019-07-03 | 2019-09-24 | 武汉策尔曼自动化设备有限公司 | A method of improving the blast furnace grain slag system butterfly valve service life |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1130340A (en) * | 1997-07-11 | 1999-02-02 | Kubota Corp | Butterfly valve provided with air intake function |
| JP3103069B1 (en) * | 1999-05-10 | 2000-10-23 | 東鉄工株式会社 | Butterfly valve |
| CN202220870U (en) * | 2011-07-29 | 2012-05-16 | 袁平仁 | Self-cleaning high-performance butterfly valve |
| CN203695542U (en) * | 2013-12-11 | 2014-07-09 | 北京志能祥赢节能环保科技有限公司 | Online cleaning device of butterfly valve flap sealing surface of dust removal pipeline |
| CN203906834U (en) * | 2014-06-26 | 2014-10-29 | 朱晓玲 | Butterfly valve for gas pipeline |
| CN203906833U (en) * | 2014-06-26 | 2014-10-29 | 朱晓玲 | Eccentric butterfly valve for gas pipeline |
| CN205689774U (en) * | 2016-06-22 | 2016-11-16 | 河北科技大学 | A kind of online cleaning type butterfly valve for blast furnace gas pipeline |
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2016
- 2016-06-22 CN CN201610452238.7A patent/CN105889525B/en active Active
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| CN105889525A (en) | 2016-08-24 |
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