CN202659964U - Sealing air automatic changeover valve for flue gas baffle door - Google Patents
Sealing air automatic changeover valve for flue gas baffle door Download PDFInfo
- Publication number
- CN202659964U CN202659964U CN 201220319153 CN201220319153U CN202659964U CN 202659964 U CN202659964 U CN 202659964U CN 201220319153 CN201220319153 CN 201220319153 CN 201220319153 U CN201220319153 U CN 201220319153U CN 202659964 U CN202659964 U CN 202659964U
- Authority
- CN
- China
- Prior art keywords
- baffle door
- gas baffle
- sealing air
- rotatingshaft
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 6
- 239000003546 flue gas Substances 0.000 title abstract description 6
- 229920002635 polyurethane Polymers 0.000 claims description 14
- 239000004814 polyurethane Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a sealing air automatic changeover valve for a flue gas baffle door and belongs to an accessory device for a flue gas desulfurization device. The sealing air automatic changeover valve for the flue gas baffle door is characterized in that a column-shaped changeover valve casing with the section in a pentagonal shape is a tee, wherein an air outlet pipe is installed on a top flat plate of the tee, air inlet pipes are installed on two bottom sides of the tee respectively, and the included angle between the two bottom sides is 60 degrees. The air inlet pipes are perpendicular to the bottom sides, joints of the two bottom sides are in circular arc connection, a rotating shaft is installed in a circular arc, and a plane valve plate capable of rotating around the shaft is installed on the rotating shaft. The sealing air automatic changeover valve has the advantages that due to the fact that the automatic changeover valve replaces outlet electric valves of two original sealing fans, installed pipelines and affiliated workload are reduced, exhaust changeover of the two sealing fans is automatically finished by pressure of sealing air, and other additional operation is not required. The rotating shaft where the plane valve plate is installed is of a double safety rotating structure, and running reliability is guaranteed well.
Description
Technical field
The utility model belongs to the air-supplying valve of the sealing air that the accessory of desulphurization plant, particularly gas baffle door use.
Background technique
Coal-fired, sinter fume contains atmospheric pollutant sulfur dioxide, for the effluent concentration limit value that reaches country and place requires to increase upper fire coal, sintered flue gas desulfurization device.In flue gas desulfur device, gas baffle door is one of key equipment, need constantly to fill the air-isolation that is used for sealing toward the hollow separate cavities of gas baffle door in order to improve sealing, consider the significance of gas baffle door, every baffle door all disposes 2 of centrifugal seal blower fans (for subsequent use each other), and 1 seal fan automatically switches to working state in addition when 1 seal fan fault.
Generally be designed to: under the configuration of sealing air pressure measurement electricity instrument, PLC or DCS control system, in the outlet of every Fans 1 electric valve being installed switches, when 1 seal fan fault, air pressure are lower than setting value, corresponding seal fan, electric valve automatically stop, closing under the control of control system, and the switching for subsequent use of seal fan is opened, moved to realize to standby fan and outlet electric valve thereof automatically.See Fig. 1.This design needs to cause the cost of every cover gas baffle door to rise 15% with 2 of electric valves, 2～3 meters of air conduit increases, PLC or DCS input/output point 19 points, and the fault point in the simultaneity factor increases by 19, and the long-time running cost increases.
The model utility content
Need the high troublesome deficiency of two electric valve costs in order to overcome existing sealing air supply system, the utility model provides a kind of gas baffle door sealing air automatic transfer valve, this gas baffle door not only is easy to control with the sealing air automatic transfer valve, and the low operating cost of cost is low.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of gas baffle door sealing air automatic transfer valve, it is characterized in that: the cross section is that pentagonal cylindricality switching valve housing is that head slab is equipped with steam outlet pipe, two bottom sides are equipped with respectively the threeway of suction tude, two bottom side angles are 60 degree, suction tude is vertical with bottom side, two bottom side joints are that circular arc connects, and rotatingshaft is housed in the circular arc, and the plane valve plate that can pivot is housed on the rotatingshaft.
In the side that described suction tude front end stretches into, its periphery is equipped with polyurethane sealing ring.
Described polyurethane sealing ring by be welded on the steel frame on the suction tude outer wall and be filled in the suction tude outer wall and the steel frame between the polyurethane media assemblage.
Described rotatingshaft overcoat have be fixed on valve plate bottom, plane the valve plate axle sleeve, the housing axle sleeve that is fixed on the switching valve housing is housed between switching valve housing and the rotatingshaft.
Circlip is equipped with at described rotatingshaft two ends, and rotatingshaft inside is provided with the oil filler pipe towards each axle sleeve, and sleeve lining is provided with twin-feed spiral V-type oil guide slot, and forced filling oil cup is equipped with at the oil filler pipe two ends.
The beneficial effects of the utility model are that the beneficial effects of the utility model are: because the utility model is in 60 ° of cavitys of two suction tude interruption-formings, if plane valve plate that can dually freely rotate, during operation, the air that comes from a side-blown blows the plane valve plate to the offside air inlet mouth of pipe, form sealing with polyurethane sealing ring under the pressure of air, vice versa.Thereby replace original two seal fans outlet electric valve with an automatic transfer valve, installation pipeline and attached workload have been reduced, reduce I/O control point 19 points, reduced the long-time running rate of breakdown, with the cost 15% of every cover gas baffle door; The exhaust switching of two seal fans is finished automatically by the pressure of sealing air, does not need other additional operations; The rotatingshaft that the plane valve plate is housed adopts two-fold insurance design of the rotational struction: all rotatable between plane valve plate and rotatingshaft, rotatingshaft and automatic switchover valve chest, greatly reduced the generation of bite problem, between the three, all establish simultaneously tank filler sleeve and be used for regular grease up twin-feed spiral V-type oil guide slot, guaranteed better operational reliability.
Description of drawings
Fig. 1 is use phase diagram of the present utility model,
Fig. 2 is the prior art phase diagram,
Fig. 3 is structural representation of the present utility model.
Fig. 4 is that the A-A of Fig. 3 is to localized view.
Fig. 5 is the polyurethane sealing ring structural representation of Fig. 3.
Fig. 6 is rotation and the tank filler sleeve structural representation of Fig. 3.
Among the figure, 1. gas baffle door, 2. sealing air pipeline 3. automatic transfer valves, 31. automatic switchover valve chests, 32. suction tude, 33. steam outlet pipes, 34. plane valve plates, 35. the valve plate axle sleeve, 351. twin-feed spiral V-type oil guide slot, 36. housing axle sleeves, 37. rotatingshaft, 371. oil filler pipes, 372. forced filling oil cups, 38. polyurethane sealing ring, 381. steel frames, 382. polyurethane fillers, 39. circlip, 4. seal fan, 5. electric valve.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
The interior length of bottom side that described suction tude front end stretches into housing is 50mm, is equipped with in air inlet mouth of pipe periphery and establishes the high polyurethane sealing ring of 5mm 38.Polyurethane sealing ring by be welded on the steel frame 381 on the suction tude outer wall and be filled in the suction tude outer wall and the steel frame between polyurethane filler 382 form.
Described rotatingshaft overcoat have be fixed on valve plate bottom, plane valve plate axle sleeve 35, the housing axle sleeve 36 that is fixed on the switching valve housing is housed between switching valve housing and the rotatingshaft.
Circlip 39 is equipped with at described rotatingshaft two ends, and rotatingshaft inside is provided with the oil filler pipe 371 towards each axle sleeve, and sleeve lining is provided with twin-feed spiral V-type oil guide slot 351, and forced filling oil cup 372 is equipped with at the oil filler pipe two ends.
Claims (5)
1. gas baffle door sealing air automatic transfer valve, it is characterized in that: the cross section is that pentagonal cylindricality switching valve housing is that head slab is equipped with steam outlet pipe, two bottom sides are equipped with respectively the threeway of suction tude, two bottom side angles are 60 degree, suction tude is vertical with bottom side, two bottom side joints are that circular arc connects, and rotatingshaft is housed in the circular arc, and the plane valve plate that can pivot is housed on the rotatingshaft.
2. gas baffle door according to claim 1 sealing air automatic transfer valve, it is characterized in that: in the side that described suction tude front end stretches into, its periphery is equipped with polyurethane sealing ring.
3. gas baffle door according to claim 2 sealing air automatic transfer valve is characterized in that: described polyurethane sealing ring by be welded on the steel frame on the suction tude outer wall and be filled in the suction tude outer wall and the steel frame between the polyurethane media assemblage.
4. gas baffle door according to claim 1 sealing air automatic transfer valve, it is characterized in that: described rotatingshaft overcoat have be fixed on valve plate bottom, plane the valve plate axle sleeve, the housing axle sleeve that is fixed on the switching valve housing is housed between switching valve housing and the rotatingshaft.
5. gas baffle door according to claim 1 sealing air automatic transfer valve, it is characterized in that: circlip is equipped with at described rotatingshaft two ends, rotatingshaft inside is provided with the oil filler pipe towards each axle sleeve, and sleeve lining is provided with twin-feed spiral V-type oil guide slot, and forced filling oil cup is equipped with at the oil filler pipe two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319153 CN202659964U (en) | 2012-07-03 | 2012-07-03 | Sealing air automatic changeover valve for flue gas baffle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220319153 CN202659964U (en) | 2012-07-03 | 2012-07-03 | Sealing air automatic changeover valve for flue gas baffle door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659964U true CN202659964U (en) | 2013-01-09 |
Family
ID=47454873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220319153 Expired - Lifetime CN202659964U (en) | 2012-07-03 | 2012-07-03 | Sealing air automatic changeover valve for flue gas baffle door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659964U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748499A (en) * | 2012-07-03 | 2012-10-24 | 山东国舜建设集团有限公司 | Seal-air automatic switching valve for flue damper door |
| CN104930221A (en) * | 2015-06-24 | 2015-09-23 | 丁毅 | Three-way valve for large pipeline |
| CN106693597A (en) * | 2017-01-09 | 2017-05-24 | 湖南华润电力鲤鱼江有限公司 | Fan system |
-
2012
- 2012-07-03 CN CN 201220319153 patent/CN202659964U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748499A (en) * | 2012-07-03 | 2012-10-24 | 山东国舜建设集团有限公司 | Seal-air automatic switching valve for flue damper door |
| CN104930221A (en) * | 2015-06-24 | 2015-09-23 | 丁毅 | Three-way valve for large pipeline |
| CN106693597A (en) * | 2017-01-09 | 2017-05-24 | 湖南华润电力鲤鱼江有限公司 | Fan system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
|
| CX01 | Expiry of patent term |