CN202692117U - Refractory belt capable of reducing local temperature of boiler - Google Patents
Refractory belt capable of reducing local temperature of boiler Download PDFInfo
- Publication number
- CN202692117U CN202692117U CN 201220389935 CN201220389935U CN202692117U CN 202692117 U CN202692117 U CN 202692117U CN 201220389935 CN201220389935 CN 201220389935 CN 201220389935 U CN201220389935 U CN 201220389935U CN 202692117 U CN202692117 U CN 202692117U
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- pin
- boiler
- refracto
- wall
- water cooling
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Abstract
The utility model discloses refractory belts capable of reducing local temperatures of a boiler. The boiler has a structure of a rectangular cube. Sidewalls at a periphery inside the boiler are provided with water cooling pipes that are perpendicular to the ground and are used for heat absorption. Corners among four side surfaces inside the boiler are respectively provided with corresponding coal dust nozzles for injection of coal dust. Surrounding sidewalls of each coal dust nozzle are equipped with the refractory belts that are used for minimizing heat absorption of the water cooling pipes. The refractory belts are disposed around the coal dust nozzles, so that the amount of heat absorption by the water cooling pipes around the coal dust nozzles is reduced, and heat generated by coal dust can be diffused to wider areas. The refractory belts allow more heat to be used for heating flames, enable a temperature inside the boiler and combustion stability to be improved, enable chemical reaction velocity to be accelerated, and help to improve combustion and reduce carbon contents of fly ash.
Description
Technical field
The utility model relates to a kind of improvement structure of boiler, is specifically related to a kind of structure that the local heat absorption of boiler is too much set up wall with refractory lining, refracto that reduces.
Background technology
In recent years, enforcement along with power system reform and transferring electricity from the west to the east, after particularly coal is carried out the marketization in recent years, the production and operation pressure of coal-burning power plant increases severely every day, follow the propelling of national industrial policies adjustment work, Township Coal Mine is integrated and is closed down and puts more effort, New Built Mine speed lags behind again the development of electric power far away on the other hand, this background has been aggravated power plant's standard coal scene that supply falls short of demand, the relation between supply and demand of serious unbalance has also promoted the rise of price and the downslide of ature of coal greatly except the direct impact that has brought electric coal deficiency.In the situation that fuel cost significantly increases, thermal power plant's survival pressure is increasing, loss in various degree appears in the ground factory in most areas, some power plant begin to use instead the coal of brown coal or mud coal one class low combustion value, such as the caloric value of mud coal at 2000～2500kcal/kg, the boiler of former power plant use just can not adapt to new needs in this case, in use often flame-out, had a strong impact on the safety and economic operation of unit, in addition because the fuel value of brown coal or mud coal is low, when coal dust is directly absorbed by the water cooling tube around the coal dust spout by the heat that coal dust spout ejection after-combustion produces, cause heat can not be transmitted to other place of boiler, not only affected the interior whole water-cooling wall heat absorption circulation of boiler, and so that the water cooling tube heat absorption around the coal dust spout is too much, form coking phenomenon, and affect its service life.
The utility model content
Can not adapt to the low combustion value coal and cause the flame-out problem that reaches poor combustion stability in order to solve original boiler, the utility model provides a kind of wall with refractory lining, refracto that reduces the boiler local temperature, concrete scheme is as follows: a kind of wall with refractory lining, refracto that reduces the boiler local temperature, described boiler is the rectangle cube structure, be provided with the water cooling tube that is used for heat absorption perpendicular to the ground around in the boiler on the sidewall, angle between interior four sides of boiler is respectively arranged with the coal dust spout of corresponding injection coal dust, it is characterized in that, be provided with the wall with refractory lining, refracto that reduces the water cooling tube heat absorption around each coal dust spout on the sidewall.
For the water cooling tube temperature of avoiding the wall with refractory lining, refracto present position excessively low: described wall with refractory lining, refracto is independently defended the combustion piece by polylith and is formed, and respectively defends the distance of space self width 1/2 between the combustion piece.
To defend combustion piece and water cooling tube bonding firmly in order to make: be welded with pin on the described water cooling tube, described defending fired piece and is fixed by a pin on the water cooling tube.
For strengthening defending the stationarity of combustion piece: fixing every block of pin of defending the combustion piece is divided into upper, middle and lower-ranking at water cooling tube, wherein the arrangement mode of every water-ice Guan Shangsan layer pin is respectively single pin, double-pin nail, single pin or double-pin nail, single pin, double-pin nail, wherein single pin is vertically fixed on the axis of water cooling tube, and double-pin nail is symmetrical and be vertically fixed on its both sides respectively take single pin axis of living in as benchmark.
For improving the Area of bearing of pin: wherein each pin in the double-pin nail and single pin axis of living in are staggered and 30 spend.
Be affiliated to ability for rationally utilizing pin: wherein the spacing distance between each layer pin is the pin axial length.
For avoiding influencing each other between the pin: the arrangement mode that wherein distribution mode of three layers of pin is followed closely by single pin, double-pin nail, single pin and double-pin nail, single pin, double-pin on the adjacent water cooling tube staggers respectively.
For avoiding reducing the caloric receptivity of whole boiler: wherein the Area Ratio of the area of wall with refractory lining, refracto and boiler internal is 1:16.
The utility model arranges wall with refractory lining, refracto around the coal dust spout, reduce the caloric receptivity of the cold pipe of coal dust spout ambient water, the heat that coal dust firing is produced can be diffused in the larger scope, improved the heat absorption uniformity of boiler integral body, reduce the coking phenomenon of the cold pipe of coal dust spout ambient water, improved the heat utilization ratio of coal dust.The caloric receptivity that piece reduces regional area is fired in defending that the utility model utilization is interspersed, and has guaranteed that again this regional area recepts the caloric substantially simultaneously.Utilize three layers of pin that arranges respectively fixedly to defend the combustion piece, can improve the degree of stability of defending the combustion piece.The pin distribution mode of interlaced arrangement can be avoided influencing each other between the pin, and does not affect the stability of defending the combustion piece.The utility model makes more heat be used for adding thermal-flame, improves temperature levels and combustion stability in the stove, can accelerate chemical reaction velocity, improves burning, reducing unburned carbon in flue dust.
Description of drawings
The distribution schematic diagram of wall with refractory lining, refracto in Fig. 1 the utility model;
The fixed position schematic diagram of three layers of pin in Fig. 2 the utility model;
The top view of Fig. 3 three layers of pin shown in Figure 2.
Attached number in the figure explanation: 1-water cooling tube, 2-defend combustion piece, 3-pin.
The specific embodiment
Below reaching with reference to the accompanying drawings embodiment is further described the utility model.
As shown in Figure 1, the utility model reduces the wall with refractory lining, refracto of boiler local temperature, the boiler that relates to is the rectangle cube structure, sidewall is provided with the water cooling tube 1 that is used for heat absorption perpendicular to the ground around in boiler, circulation has recirculated water in the water cooling tube, angle between interior four sides of boiler is respectively arranged with the coal dust spout of corresponding injection coal dust, is provided with the wall with refractory lining, refracto that reduces the water cooling tube heat absorption around each coal dust spout on the sidewall.Wall with refractory lining, refracto forms independently to be defended combustion piece 2 by polylith, respectively defend the distance of space self width 1/2 between the combustion piece 2, respectively defend the combustion piece 2 be not neatly be distributed in the coal dust spout around, but accordingly in the out of order arrangement of this regional area, can avoid like this water cooling tube caloric receptivity of this regional area very few, thereby reduce the efficiency of cycle of whole boiler.Shown in Fig. 2,3, not firm with water cooling tube 1 adhesion for avoiding defending combustion piece 2, be welded with pin 3 on the water cooling tube 1, defend combustion piece 2 and be fixed on the water cooling tube 1 by pin 3.The pin 3 of fixing every wall with refractory lining, refracto 2 is divided into upper, middle and lower-ranking at water cooling tube, wherein the arrangement mode of every water-ice Guan Shangsan layer pin is respectively single pin, double-pin nail, single pin or double-pin nail, single pin, double-pin nail, wherein single pin is vertically fixed on the axis of water cooling tube 1, and is symmetrical and be vertically fixed on its both sides respectively take single pin axis of living in as benchmark in the double-pin nail.Wherein each pin in the double-pin nail and single pin axis of living in are staggered and 30 spend.For avoiding influencing each other between each pin on the adjacent water cooling tube, the arrangement mode that wherein distribution mode of three layers of pin is followed closely by single pin, double-pin nail, single pin and double-pin nail, single pin, double-pin on the adjacent water cooling tube 1 staggers respectively.For avoiding the caloric receptivity that the combustion piece affects the present position water cooling tube fully of defending around the coal dust spout, wherein the spacing distance between each layer pin is the pin axial length.For avoiding affecting the integral body caloric receptivity of boiler, wherein the Area Ratio of the area of wall with refractory lining, refracto and boiler internal is 1:16.
In this programme will by refractory material consist of defend the combustion piece be arranged on the coal dust spout around to form wall with refractory lining, refracto, wall with refractory lining, refracto reduces the caloric receptivity of the cold pipe of coal dust spout ambient water, so that the temperature that coal dust produces can extend to other position of boiler, provide the heat absorption of whole boiler internal harmonious, avoided simultaneously the cold pipe temperature of coal dust spout ambient water excessive, and boiler other local temperature is not up to standard or the problem that stove fire extinguishes, so that brown coal or mud coal also can well be burnt in this boiler, for the utilization of new energy resources mode provides a new direction.
The above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, anyly be familiar with the technical staff of this patent within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned prompting is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of the utility model scheme.
Claims (8)
1. wall with refractory lining, refracto that reduces the boiler local temperature, described boiler is the rectangle cube structure, be provided with the water cooling tube (1) that is used for heat absorption perpendicular to the ground around in the boiler on the sidewall, angle between interior four sides of boiler is respectively arranged with the coal dust spout of corresponding injection coal dust, it is characterized in that, be provided with the wall with refractory lining, refracto that reduces water cooling tube (1) heat absorption around each coal dust spout on the sidewall.
2. wall with refractory lining, refracto as claimed in claim 1 is characterized in that, described wall with refractory lining, refracto is independently defended combustion piece (2) by polylith and formed, and respectively defends the distance of space self width 1/2 between the combustion piece (2).
3. wall with refractory lining, refracto as claimed in claim 2 is characterized in that, is welded with pin (3) on the described water cooling tube (1), and the described combustion piece (2) of defending is fixed on the water cooling tube (1) by pin (3).
4. wall with refractory lining, refracto as claimed in claim 3, it is characterized in that, fixing every block of pin (3) of defending combustion piece (2) is divided into upper, middle and lower-ranking at water cooling tube (1), wherein the arrangement mode of the upper three layers of pin of every water-ice pipe (1) (3) is respectively single pin (3), double-pin nail (3), single pin (3) or double-pin nail (3), single pin (3), double-pin nail (3), wherein single pin (3) is vertically fixed on the axis of water cooling tube (1), and double-pin nail (3) is symmetrical and be vertically fixed on its both sides respectively take single pin axis of living in as benchmark.
5. wall with refractory lining, refracto as claimed in claim 4 is characterized in that, wherein each pin (3) in the double-pin nail (3) and single pin (3) axis of living in 30 degree that are staggered.
6. wall with refractory lining, refracto as claimed in claim 5 is characterized in that, wherein the spacing distance between each layer pin (3) is pin (3) axial length.
7. wall with refractory lining, refracto as claimed in claim 6 is characterized in that, wherein the distribution mode of the upper three layers of pin of adjacent water cooling tube (1) (3) staggers respectively by the arrangement mode of single pin, double-pin nail, single pin and double-pin nail, single pin, double-pin nail.
8. wall with refractory lining, refracto as claimed in claim 1 is characterized in that, wherein the Area Ratio of the area of wall with refractory lining, refracto and boiler internal is 1:16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389935 CN202692117U (en) | 2012-08-07 | 2012-08-07 | Refractory belt capable of reducing local temperature of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389935 CN202692117U (en) | 2012-08-07 | 2012-08-07 | Refractory belt capable of reducing local temperature of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692117U true CN202692117U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389935 Expired - Fee Related CN202692117U (en) | 2012-08-07 | 2012-08-07 | Refractory belt capable of reducing local temperature of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692117U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471131A (en) * | 2013-09-06 | 2013-12-25 | 哈尔滨工业大学 | Refractory belt arrangement structure arranged on W flame boiler lower hearth |
| CN104075339A (en) * | 2014-07-10 | 2014-10-01 | 国家电网公司 | Power station pulverized coal boiler heat insulation band and method for determining area and laying position of heat insulation band |
-
2012
- 2012-08-07 CN CN 201220389935 patent/CN202692117U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471131A (en) * | 2013-09-06 | 2013-12-25 | 哈尔滨工业大学 | Refractory belt arrangement structure arranged on W flame boiler lower hearth |
| CN104075339A (en) * | 2014-07-10 | 2014-10-01 | 国家电网公司 | Power station pulverized coal boiler heat insulation band and method for determining area and laying position of heat insulation band |
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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: 20130123 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |