CN201306476Y - 2-position 3-way air reversing valve - Google Patents
2-position 3-way air reversing valve Download PDFInfo
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- CN201306476Y CN201306476Y CNU2008202303244U CN200820230324U CN201306476Y CN 201306476 Y CN201306476 Y CN 201306476Y CN U2008202303244 U CNU2008202303244 U CN U2008202303244U CN 200820230324 U CN200820230324 U CN 200820230324U CN 201306476 Y CN201306476 Y CN 201306476Y
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Abstract
The utility model relates to a 2-position 3-way air reversing valve, belonging to the technical field of valves, which comprises a reversing valve body, a valve plate and a pneumatic actuator. Three air chambers are arranged in the reversing valve body. An interface with a flange is arranged on each air chamber, and is connected with an external pipe. A half sandwich structure is used for the air chamber on the upper part of the valve body. Two lower air chambers are fully separated. Communicating interfaces are arranged on the upper air chamber and two lower air chambers. A valve plate is arranged at each communicating interface for opening and closing the communicating interface. The valve plate is arranged in the upper air chamber and connected with the pneumatic actuator through a valve stem. The pneumatic actuator is vertically installed on the top of the reversing valve body. The utility model has the advantages that the operation is stable, the tightness is favorable and the overall service life is long through adopting a double-valve-plate structure that two cylinders drive the corresponding valve plates to move linearly; the overall height is reduced, the paired arrangement of reversing valves on the top of the heating furnace is facilitated, the quantity of pipes arranged in the furnace area is reduced and the loss of coal gas is decreased through adopting a half sandwich structure for the upper air chamber.
Description
Technical field
The utility model relates to valve technology field, relates in particular to be applied to arrange in pairs in a kind of oven regenerative combustion system the two position three-way valve reversing arrangement that uses, be used for two kinds of variety classes gas commutation circulations.
Background technique
At present, be widely used on the oven of the metallurgical at home and mechanical industry of regenerative combustion technology, selector valve is mainly used in the commutation of air and flue gas or coal gas and flue gas as the key equipment of regenerative combustion technology.According to the difference of regenerative combustion system reversing mode, the selector valve that is used for the commutation of air or coal gas and flue gas can be divided into: two-position four way change valve and two position three way directional control valve.These two kinds of selector valves all adopt valve shaft to drive the valve plate action, divide the valve shaft rotation to drive and two kinds of structural types of valve shaft linear drives.Because the stability and the valve plate sealing problem of operation, the used selector valve major part of regenerative combustion system all adopts the structural type of valve shaft linear movement, the less use of rotary selector valve at present.Two-position four way change valve can use separately, a combustion heat supplying section to regenerative combustion system is carried out the commutation of air or coal gas and flue gas, its shortcoming is that the size of selector valve can only be arranged in oven one side more greatly, cause the asymmetric of stove both sides piping layout, thus bigger coal gas loss when forming stove both sides fire box temperature, the difference of ignition time and commutation.Two position three way directional control valve uses in regenerative combustion system in pairs, and two kinds of arrangements are arranged: 1) adopt the heavy caliber two position three way directional control valve that commutation is concentrated in combustion heat supplying section branch both sides, promptly commutation is concentrated in the segmentation both sides; 2) adopt combustion heat supplying section and many small-bore two position three way directional control valve is commutated separately to oven both sides burner arranged in pairs, form segmentation and disperse commutation.First kind of reversing mode generally can only be placed on the stove both sides because the selector valve volume is big, and the stove both sides need bigger pipeline and selector valve arrangement space, and because selector valve is long to the pipeline between burner, volume is big, the coal gas waste is big when causing commutation.Second kind of reversing mode cause the piping layout complexity, and the control point of selector valve is many because heat supply section need be arranged manyly to selector valve, and the fault point is also many, has increased the maintenance workload of combustion system greatly.
Summary of the invention
The utility model is for the two-position three way gas commutating valve that provides is provided, and one of its goal of the invention is to have reduced the length of height and the valve shaft and the cylinder of top air chamber, and the whole height of selector valve is reduced greatly;
Another purpose of its invention is a good airproof performance, and is stable.
For achieving the above object, the scheme that the utility model adopts is: the two-position three way gas commutating valve, it is characterized in that: it includes selector valve housing, valve plate, pneumatic actuator, the selector valve housing is a welded steel strueture, inner being separated to form by steel plate is three air chambers that " product " font is arranged, each air chamber externally is provided with flanged (FLGD) interface and is connected with external pipe; The air chamber that is positioned at valve body top adopts half sandwich structure, separate fully between the 2 air chambers of bottom, two air chambers of top air chamber and bottom are provided with and are communicated with interface, the connection jointing all is provided with valve plate and opens and closes, and valve plate is positioned at the top air chamber and is connected with the pneumatic actuator that is vertically mounted on the selector valve case top by valve rod.
Described valve plate adopts the spherical joint of suffering from one's own actions core structure to be connected with valve rod.
Described valve plate be communicated be provided with between interface the band rubber seal seal arrangement.
Described selector valve housing both sides are provided with access opening.
The beneficial effects of the utility model are: (1) upper strata air chamber adopts half sandwich structure, and height dimension is little, has shortened the length of valve shaft and cylinder, the whole height of selector valve is reduced greatly, be convenient to be installed in furnace roof, stove both sides piping layout is simple, the coal gas waste when having lowered commutation; (2) valve plate be communicated with the good airproof performance that interface is asked; (3) reduce selector valve and used logarithm, thereby reduced the electrical control point of reversing mechanism and the maintenance workload of combustion system.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is that the C of Fig. 1 is to side view;
Fig. 3 is A-A sectional view of Fig. 1;
Fig. 4 is B-B sectional view of Fig. 2;
Fig. 5 is adopting segmentation heat supply branch side to concentrate the pipe network system figure that uses on the recuperative heater of commutation for the utility model;
The sectional view that Fig. 6 uses on the recuperative heater that adopts the segmentation heat supply to divide side to concentrate commutation in pairs for wooden model utility.
Among the figure: 1-selector valve housing, 2-pneumatic actuator, 3-valve rod, the 4-spherical joint, 5-valve plate, 6 seal arrangements, 7-air chamber one, 8-air chamber two, 9-air chamber three, 10-is communicated with interface, 11-access opening, 12-oven, 13-two-position three way gas commutating valve, 14-heat-accumulating burner, 15-gas exhaust duct, 16-connects coal gas side induced draught fan gas exhaust duct
17-connects air side induced draught fan gas exhaust duct, one section of 18-combustion heat supplying, 19-air conduit, 20-gas pipe line, two sections of 21-combustion heat supplyings, 22-admission line.
Embodiment
In order to understand the utility model better, be described further below in conjunction with drawings and Examples.
Referring to Fig. 1 to Fig. 4:, be mainly used in the commutation circulation that is used for two kinds of variety classes gases in oven 12 regenerative combustion systems, and use in pairs according to the two-position three way gas commutating valve that the utility model is implemented.It includes selector valve housing 1, and selector valve housing 1 adopts the steel plate welding fabrication, and is separated to form three air chambers that are " product " font layout in enclosure interior by steel plate, and each air chamber externally is provided with flanged (FLGD) interface and is connected with external pipe.The air chamber 1 that is positioned at valve body top adopts half sandwich structure, has reduced the height of top air chamber above half.Separate fully between the 2 air chambers of bottom, two air chambers of top air chamber and bottom are provided with and are communicated with interface 10, be communicated with interface 10 places valve plate 5 all is set, and valve plate 5 is provided with the seal arrangement 6 of being with rubber seal with being communicated with 10 interfaces, guarantees excellent sealing.Valve plate 5 is positioned at the top air chamber and is connected with the pneumatic actuator 2 that is vertically mounted on selector valve housing 1 top by valve rod 3, move by air cylinder driven valve rod 3 alternatively up and down, top air chamber 1 alternately is communicated with air chamber 28, the air chamber 39 of bottom, thereby change the flow direction of two kinds of variety classes gases, realize that the commutation of gas is flowed.Because what adopt is the bivalve plate mechanism of each self-corresponding valve plate 5 moving linearly of two air cylinder driven, this selector valve operates steadily, good airproof performance, and bulk life time is long.Because air chamber 1 has adopted the structure of half interlayer, thereby reduced height and the stroke of valve plate 5 and the length of cylinder of top air chamber, the whole height of selector valve is reduced greatly, be convenient to selector valve and be arranged in oven 12 furnace roofs in pairs, simplify the layout of stove district pipeline 15, reduced the coal gas loss.Valve plate 5 adopts spherical joint 4 to be connected with valve rod 3, forms and suffers from one's own actions core structure, guarantees that valve plate 5 forms intact contacting and sealing with seal ring.The change valve both sides are provided with access opening 11, when need being used to seal arrangement 6, valve plate 5 are overhauled.
Fig. 5 divides side to concentrate the recuperative heater combustion system figure of commutation for adopting two sections heat supplies.One section 18 of combustion heat supplying and combustion heat supplying are provided with four two-position three way gas commutating valves of implementing according to the utility model 13 for two section 21 among the figure, and two selector valves that oven about 12 is arranged are used for the commutation of air and flue gas or coal gas and flue gas as a pair of.During work, the heat-accumulating burner 14 of oven 12 1 sides sprays into air and the coal gas that is preheating to high temperature by heat retainer in the heat-accumulating burner 14 in burner hearth, and mixed combustion in burner hearth, the heat-accumulating burner 14 of opposite side is extracted the high-temperature flue gas in the burner hearth out burner hearth by the draft of induced draught fan, high-temperature flue gas heat when flowing through heat-accumulating burner 14 is absorbed by the heat retainer in the heat-accumulating burner 14, then with about 150 ℃ temperature through the burner preceding pipeline, two-position three way gas commutating valve 13, gas exhaust duct 15 reaches by connecing coal gas side induced draught fan gas exhaust duct 16 and connecing air side induced draught fan gas exhaust duct 17 and discharges from induced draught fan.The two position three way directional control valve of both sides commutates simultaneously after through an operation period, the working state of stove both sides heat-accumulating burner 14 changes, the heat-accumulating burner 14 that sprayed air or coal gas in the last operation cycle in burner hearth is outwards discharged fume, the burner of its offside heat retainer in burner hearth sprays into by heat-accumulating burner 14 is preheating to the air or the coal gas of high temperature, and mixed combustion in burner hearth.
Fig. 6 is seen in the application of this Regenerative Combustion System on oven.Two-position three way gas commutating valve 13 described in the utility model is arranged symmetrically on oven 12 furnace roofs in pairs, and it highly is no more than the height of furnace roof pipeline, and the layout of system can not be subjected to the influence of shop traveller.Stove district pipeline comprises that admission line 22 and gas exhaust duct 15 arrange succinctly, balanced, makes the furnace temperature of oven 12 burner hearth both sides even, has saved gas consumption simultaneously.The selector valve system operates steadily in long sampling action, and rate of fault is low, and maintenance is little.
Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalence of being done according to the utility model claim changes, and still belongs to protection domain of the present utility model.
Claims (4)
1. two-position three way gas commutating valve, it is characterized in that: it includes selector valve housing, valve plate, pneumatic actuator, the selector valve housing is a welded steel strueture, inner being separated to form by steel plate is three air chambers that " product " font is arranged, each air chamber externally is provided with flanged (FLGD) interface and is connected with external pipe; The air chamber that is positioned at valve body top adopts half sandwich structure, separate fully between the 2 air chambers of bottom, two air chambers of top air chamber and bottom are provided with and are communicated with interface, the connection jointing all is provided with valve plate and opens and closes, and valve plate is positioned at the top air chamber and is connected with the pneumatic actuator that is vertically mounted on the selector valve case top by valve rod.
2. two-position three way gas commutating valve according to claim 1 is characterized in that: described valve plate adopts the spherical joint of suffering from one's own actions core structure to be connected with valve rod.
3. two-position three way gas commutating valve according to claim 1 is characterized in that: described valve plate be communicated be provided with between interface the band rubber seal seal arrangement.
4. two-position three way gas commutating valve according to claim 1 is characterized in that: described selector valve housing both sides are provided with access opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202303244U CN201306476Y (en) | 2008-12-16 | 2008-12-16 | 2-position 3-way air reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202303244U CN201306476Y (en) | 2008-12-16 | 2008-12-16 | 2-position 3-way air reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306476Y true CN201306476Y (en) | 2009-09-09 |
Family
ID=41098941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202303244U Expired - Fee Related CN201306476Y (en) | 2008-12-16 | 2008-12-16 | 2-position 3-way air reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306476Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287564A (en) * | 2011-08-02 | 2011-12-21 | 新兴铸管股份有限公司 | Valve |
| CN103711948A (en) * | 2012-10-05 | 2014-04-09 | 江苏神通阀门股份有限公司 | High-safety regenerative heating furnace reversing device |
| CN104061364A (en) * | 2014-06-20 | 2014-09-24 | 内蒙古包钢钢联股份有限公司 | Two-position three-way reversing valve stem seal replacing method |
| CN110575796A (en) * | 2018-06-11 | 2019-12-17 | 中国石油天然气集团有限公司 | flue gas control system |
-
2008
- 2008-12-16 CN CNU2008202303244U patent/CN201306476Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287564A (en) * | 2011-08-02 | 2011-12-21 | 新兴铸管股份有限公司 | Valve |
| CN103711948A (en) * | 2012-10-05 | 2014-04-09 | 江苏神通阀门股份有限公司 | High-safety regenerative heating furnace reversing device |
| CN104061364A (en) * | 2014-06-20 | 2014-09-24 | 内蒙古包钢钢联股份有限公司 | Two-position three-way reversing valve stem seal replacing method |
| CN110575796A (en) * | 2018-06-11 | 2019-12-17 | 中国石油天然气集团有限公司 | flue gas control system |
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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: 20090909 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |