CN102162639A - Multistage plunger adjusting device for slag discharge of fluidized bed boiler - Google Patents
Multistage plunger adjusting device for slag discharge of fluidized bed boiler Download PDFInfo
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- CN102162639A CN102162639A CN 201110100250 CN201110100250A CN102162639A CN 102162639 A CN102162639 A CN 102162639A CN 201110100250 CN201110100250 CN 201110100250 CN 201110100250 A CN201110100250 A CN 201110100250A CN 102162639 A CN102162639 A CN 102162639A
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Abstract
The invention discloses a multistage plunger adjusting device for slag discharge of a fluidized bed boiler. The device comprises a slag discharge pipe 1, a plunger 2, a plunger 3 vertically intersected with the plunger 2, a sealing ring 4, an asbestos filler 5, a limit pin 6, a limit U-shaped ring 7, an operating handle jack 8 and an asbestos filler sealing gland 9. The plunger 2 and the plunger 3 are made of heat and abrasion resistant round steel, and the parts of the plungers exposed outside the slag discharge pipe are made of carbon steel. The plunger group of each stage consists of the plunger 2 and the plunger 3 which are mutually vertical. The plunger groups of multiple stages are combined into the multistage plunger adjusting device, and the flow of slag particles is adjusted by changing the number and the inserting depth of the plungers inserted into the slag discharge pipe. The flow of the slag particles is reduced by means of the plunger groups of multiple stages rather than only the flow of the slag particles is adjusted by changing the flow section. The two adjacent plunger groups are staggered up and down for 45 degrees in the horizontal direction. The dynamic and static clearances of the plungers are reliably sealed by the sealing ring 4, the asbestos filler 5 and the asbestos filler sealing gland 9.
Description
Technical field
The present invention relates to CFBB, especially relate to a kind of multistage plunger adjusting device that is used for the fluidized-bed combustion boiler deslagging.
Background technology
China uses the maximum country of CFBB (CFB boiler) in power plant in the world, the big or small recirculating fluidized bed station boiler that has moved has more than 3000, wherein the above large-size circulating fluidized bed station boiler of 410t/h has more than 140, and the above large-size circulating fluidized bed station boiler of 1025t/h has more than 20 (also having more than 50 builds).
The power station boiler hearth of circulating fluidized bed is that the bottom is that the cone middle and upper part is the four sides furnace wall structure of rectangular cylinder, and slag-drip opening is arranged in the position that the bottom cone is pressed close to bed surface.900 ℃ of deslagging temperatures, the about 2000-3000mm of Residue extraction pipeline vertical direction, the about 30mm of horizontal plane both direction swell increment, the about 9000-5000KPa of bed of material pressure is born on slag-drip opening top.Deslagging arrives slag cooler at bed of material pressure and gravity effect current downflow.The flowability of production practices proof slag when slag is thin is very strong, the flow that is the very low deslagging of slag cooler rotating speed is still very big, the flow of slag is difficult to control, the normal operation that this has influence on the control of the CFBB bed of material thereby has influence on boiler when slag is thin.
The deslagging flow slag cooler that equally also can cause out of control stops up.
Traditional control valve that changes the flow area size on a cross section all is not suitable for the adjusting of fluidized-bed combustion boiler deslagging, and the change of flow area size can cause bulky grain to stop up scum pipe or fit badly because of slag stream appears in slag inclusion.The deslagging flow of early stage CFBB is used cone valve mostly, blocks clinker easily in the gap of production practices proof cone valve but thin slag particle is still flowing, and causes the slag flow out of control or fit badly.The high ON-DATA of cone valve price seven, 800,000 yuan in addition.
Summary of the invention
The object of the invention is to provide a kind of multistage plunger adjusting device that is used for the fluidized-bed combustion boiler deslagging.
For achieving the above object, the present invention takes following technical proposals:
1. plunger is the round steel with the heat-resistance and wear-resistance steel material, and it is carbon steel that plunger is exposed at the outer part material of scum pipe.
2. multistage plunger group is combined into multistage plunger adjusting device, regulates the slag particle flow by changing the plunger quantity and the insertion depth that insert scum pipe.
3. each grade plunger group is made up of two mutually perpendicular plungers.
4. by multistage plunger group the slag particle flow velocity is reduced rather than only depend on and change flow area adjusting slag particle flow.
5. adjacent two plunger groups are up and down that 45 ° of stagger arrangement are in the horizontal direction arranged in stagger arrangement.
6. the asbestos packing sealing ring is set the dynamic and static gaps of plunger is carried out positiver sealing.
7. plunger inserts the pipeline section 4Si2 heat-resistance and wear-resistance steel in the scum pipe, can bear 1200 ℃ operating temperature, and is indeformable in the time of can guaranteeing work.
8. be provided with stopping means and prevent that mobile range from crossing ambassador rod and threading off.
The present invention seeks to design a kind of reliable apparatus that can regulate flow again that the bulky grain slag can not stop up scum pipe of running into.Multistage plunger adjusting device has solved this problem reliably, and this device only needs manually just can reliable operation.By multistage (promptly in a plurality of cross sections) so regulate the slag particle flow rather than only regulate the slag particle flow and can not stop up at an alternation of cross-section flow area.Multistage plunger repeatedly reduces the speed of slag particle thereby the deslagging flow significantly reduces and controlled.Can reduce the fluidized-bed combustion boiler user because of the deslagging harm to boiler operatiopn out of control.
Description of drawings
Fig. 1 is multistage plunger facade view.
Fig. 2 is a first order plunger cross section view.
Fig. 3 is a second level plunger cross section view.
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the multistage plunger adjusting device that is used for the fluidized-bed combustion boiler deslagging of the present invention, the plunger 3 that it comprises scum pipe 1, plunger 2, intersect vertically with plunger 2, sealing ring 4, asbestos packing 5, position-limitting pin 6, spacing U-loop 7, operator are jack 8, asbestos packing sealing gland 9.
Each grade plunger group is made up of two mutually perpendicular plungers 2, plungers 3.
Multistage plunger group is combined into multistage plunger adjusting device, regulates the slag particle flow by changing the plunger quantity and the insertion depth that insert scum pipe.Lean on multistage plunger group that the slag particle flow velocity is reduced rather than only depend on and change flow area adjusting slag particle flow.
Adjacent two plunger groups are up and down that 45 ° of stagger arrangement are in the horizontal direction arranged in stagger arrangement.
The dynamic and static gaps that sealing ring 4, asbestos packing 5,9 pairs of plungers of asbestos packing sealing gland are set carries out positiver sealing.
The pipeline section that plunger inserts in the scum pipe adopts the 1Cr20Ni14Si2 heat-resistance and wear-resistance steel, can bear 1200 ℃ operating temperature, and is indeformable in the time of can guaranteeing work.
Be provided with position-limitting pin 6, spacing U-loop 7 and prevent that mobile range from crossing ambassador's rod and threading off.
The various embodiments described above can not depart from the scope of the present invention down in addition some variations, thus more than explanation comprise and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit claim of the present invention.
Claims (8)
1. the multistage plunger adjusting device that is used for the fluidized-bed combustion boiler deslagging, as Fig. 1, Fig. 2, shown in Figure 3, the multistage plunger adjusting device that is used for the fluidized-bed combustion boiler deslagging of the present invention, the plunger 3 that it comprises scum pipe 1, plunger 2, intersect vertically with plunger 2, sealing ring 4, asbestos packing 5, position-limitting pin 6, spacing U-loop 7, operator are jack 8, asbestos packing sealing gland 9.
2. valve body 1 according to claim 1 is the skew T with the heat-resistance and wear-resistance steel material, and plunger 1 is the cylindrical piston with the heat-resistance and wear-resistance steel material.
3. plunger 1 according to claim 1 can have the effect of make and break pass that regulating action is arranged again under the driving of YE.
4. multistage plunger group according to claim 1 is combined into multistage plunger adjusting device, regulates the slag particle flow by changing the plunger quantity and the insertion depth that insert scum pipe.Lean on multistage plunger group that the slag particle flow velocity is reduced rather than only depend on and change flow area adjusting slag particle flow.
5. each grade plunger group according to claim 1 is made up of two mutually perpendicular plungers 2, plungers 3.Plunger 2, plunger 3 are the round steel with the heat-resistance and wear-resistance steel material, and it is carbon steel that plunger is exposed at the outer part material of scum pipe.The pipeline section that plunger inserts in the scum pipe adopts the 1Cr20Ni14Si2 heat-resistance and wear-resistance steel, can bear 1200 ℃ operating temperature, and is indeformable in the time of can guaranteeing work.
6. adjacent two plunger groups according to claim 1 are up and down that 45 ° of stagger arrangement are in the horizontal direction arranged in stagger arrangement.
7. the dynamic and static gaps that sealing ring 4, asbestos packing 5,9 pairs of plungers of asbestos packing sealing gland are set according to claim 1 carries out positiver sealing.
8. the position-limitting pin 6, spacing U-loop 7 of being provided with according to claim 1 prevents that mobile range from crossing ambassador's rod and threading off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101002509A CN102162639B (en) | 2011-04-21 | 2011-04-21 | Multistage plunger adjusting device for slag discharge of fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101002509A CN102162639B (en) | 2011-04-21 | 2011-04-21 | Multistage plunger adjusting device for slag discharge of fluidized bed boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102162639A true CN102162639A (en) | 2011-08-24 |
| CN102162639B CN102162639B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101002509A Expired - Fee Related CN102162639B (en) | 2011-04-21 | 2011-04-21 | Multistage plunger adjusting device for slag discharge of fluidized bed boiler |
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| CN (1) | CN102162639B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418921A (en) * | 2011-12-08 | 2012-04-18 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Kinetic energy coke knocker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646572Y (en) * | 2003-05-13 | 2004-10-06 | 国电热工研究院 | Grading adjustable clinker control valve |
| CN2901063Y (en) * | 2006-05-17 | 2007-05-16 | 毛鸿禧 | Pneumatic slag discharging valve |
-
2011
- 2011-04-21 CN CN2011101002509A patent/CN102162639B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646572Y (en) * | 2003-05-13 | 2004-10-06 | 国电热工研究院 | Grading adjustable clinker control valve |
| CN2901063Y (en) * | 2006-05-17 | 2007-05-16 | 毛鸿禧 | Pneumatic slag discharging valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418921A (en) * | 2011-12-08 | 2012-04-18 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Kinetic energy coke knocker |
| CN102418921B (en) * | 2011-12-08 | 2013-07-24 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Kinetic energy coke knocker |
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| Publication number | Publication date |
|---|---|
| CN102162639B (en) | 2012-08-22 |
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Address after: Jin Haiyi Chui Songshan Road No. 298 450051 Henan city of Zhengzhou province No. 2 unit 2 Building No. 3 Patentee after: Zhang Quansheng Address before: 100055, Beijing, Guang'an, No. 168 outside the main street, Lang International Building, block A, 5 Patentee before: Zhang Quansheng |
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Addressee: Zhang Quansheng Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20130421 |