CN202765613U - Raw coal bunker outlet structure - Google Patents
Raw coal bunker outlet structure Download PDFInfo
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- CN202765613U CN202765613U CN 201220367018 CN201220367018U CN202765613U CN 202765613 U CN202765613 U CN 202765613U CN 201220367018 CN201220367018 CN 201220367018 CN 201220367018 U CN201220367018 U CN 201220367018U CN 202765613 U CN202765613 U CN 202765613U
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Abstract
The utility model discloses a raw coal bunker outlet structure. The raw coal bunker outlet structure is connected with a coal feeding belt and comprises a body. The cross section of the body is in a rectangular shape. The body is arranged with the long side being parallel with a coal conveying belt. The width of the bottom face of the body is matched with the width of the coal conveying belt. The length of the bottom face of the body is larger than the width of the coal conveying belt. The width of the body of the raw coal bunker outlet structure is matched with the width of the coal conveying belt. The length of the body is not limited. Different lengths can be set according to the needs of a user so that the area of the raw coal bunker outlet structure is enlarged, even on the condition that the inner wall of the body is stuck with fire coal, a sufficient reserved space is guaranteed so that fire coal supply cannot be affected. In addition, due to the fact that the size in one direction of the raw coal bunker outlet structure is enlarged, the included angle between the wall face of a raw coal bunker outlet and a horizontal plane is enlarged, and resistance generated by flowing of the fire coal is lowered.
Description
Technical field
The utility model relates to the coal combustion equipment field, refers in particular to a kind of run coal bin export structure.
Background technology
Run coal bin is component part important in the combustion systems, plays the buffer action of temporary transient fuel-in-storage, is requisite equipment in the coal-fired unit.The coal-fired coal supply belt that passes through is transported to the coal supply belt layer from coal yard, by being separated to run coal bin from the coal device, utilizes gravity fall to arrive feeder again, is transported to coal mill or directly enters burner hearth through feeder again.
Run coal bin mainly is divided into two kinds of cement concrete and steel coal hoppers, and effectively coal storage generally is 8～12 hours.Such as Fig. 1, the run coal bin outlet is generally the steel centrum, comprises the little coal bunker of terrace with edge and hyperbola.From the running condition of coal-burning power plant, the coal-fired smooth situation that flows of ubiquity coal bunker outlet is when serious even cause disconnected coal, blowing out.Properties of CFB particularly, the chute blockage situation is particularly serious, can say that ten power plant have nine power plant to have in various degree chute blockage problem, have had a strong impact on the available rate of unit.
For this problem, export a lot of measures at coal bunker, mainly comprise:
(1) discloses the coal hole.When chute blockage occurs, manually disclose coal through the aperture of coal bunker outlet side.The method can dredge coal stream, but can't fundamentally solve the chute blockage problem, and it is larger to consume manpower in the situation that chute blockage is not very serious.
(2) coal bucker loosener.This equipment is the scraper plate of strip, is installed in the coal bunker internal face, utilizes hydraulic efficiency gear to move up and down, and can clear up the fire coal that is bonded on the coal bunker internal face on the one hand, on the other hand coal cinder is played loose effect.Be not very wet at fire coal, when the chute blockage situation was not very serious, this equipment had certain effect to dredging coal stream, and does not need to expend too many manpower, can realize automatic control.But because this equipment is in the coal bunker exit, bear coal-fired static pressure, easily break down, come off such as scraper plate and stop up coal bunker outlet, hydraulic efficiency gear and leakage of oil occurs, take the shortcoming such as outlet.
(3) air bubble.This equipment utilization pressurized air is impacted coal cinder, plays the effect of transporting coal stream.This equipment is had relatively high expectations to the quantity of installing, air-flow angle, installation site etc., otherwise easily makes coal cinder more solid, makes on the contrary chute blockage more serious, has certain risk.Therefore, air bubble uses relatively less.
(4) rapping apparatus.This device is installed in coal bunker outlet outside wall surface, back and forth knocks coal bunker, dredging coal stream.Principle and coal bucker loosener are similar, and can only be applicable to equally chute blockage is not very serious situation, otherwise easily the more solid phenomenon of coal cinder is more vibrated in appearance, and effect is not satisfactory.
(5) center feeder.This device be the device of similar cage, with fire coal from being directed to gradually central tube all around, through the central tube coal supply to feeder.The direct transporting of method that this device adopts machinery is coal-fired, can alleviate the chute blockage phenomenon, and control coal-fired flow velocity, reduces simultaneously the height of coal supply belt layer.But owing to be rotating machinery, easily stuck when impurity occurring, and cost of equipment is more expensive.This device uses less in the coal-burning power plant.
Above five kinds of anti-blocking modes can be alleviated the chute blockage phenomenon to a certain extent, but shortcoming separately is also apparent in view, and the operations staff also passes different judgements on to its result of use.And, can find out, existing prevent blocking of coal bunker measure mostly is mechanical equipment, by rapping, loose, the mode such as feed initiatively, reduces coal-fired bonding at the coal bunker internal face, and then alleviates the chute blockage phenomenon.Yet relatively poor at the working environment in run coal bin exit: the coal column static pressure is larger, and the cohesiveness of raw coal is strong, has corrosive property etc.Therefore, the fault rate of rotary machine is higher, and blocking-proof result neither be clearly.
Summary of the invention
The purpose of this utility model provides a kind of run coal bin export structure, and the defective that it can overcome prior art prevents from occurring at run coal bin the phenomenon of chute blockage.
The purpose of this utility model is achieved in that
A kind of run coal bin export structure, described run coal bin export structure is connected with the coal supply belt, include body, the shape of cross section of described body is rectangle, and long limit and the coal conveyer belt of described body be arranged in parallel, the width of described body bottom surface matches with the width of coal conveyer belt, and its length is greater than the width of coal conveyer belt.
The width of the body of described run coal bin export structure matches with the width of coal conveyer belt, length is then unrestricted, can be according to user's needs, different length is set, the area of described run coal bin export structure is increased, even in the situation that the sticking glutinous coal of described inner body wall occurs, can guarantee that also leaving enough spaces satisfies coal supply.In addition, the in one direction size increasing of structure because described run coal bin is shuted up so can strengthen the angle of run coal bin outlet wall and horizontal surface, reduces the resistance of the coal-fired generation of flowing.
Among embodiment, the leaning angle of described body sidewall is greater than 70 degree therein.
Among embodiment, the leaning angle of the seamed edge that adjacent two sidewalls of described body are connected to form is greater than 70 degree therein.
Among embodiment, the inboard of adjacent two the sidewall junctions of described body is set to chamfering therein.
Among embodiment, be provided with the lining body that matches with described body in the described body therein, the material of described lining body is corrosion-resistant steel.
The utility model compared with prior art has following beneficial effect:
This run coal bin export structure with the size expansion of run coal bin outlet, increases the flow area of run coal bin export structure by the change to size and shape, guarantees to leave enough passages and satisfies coal-fired circulation.Be 70 degree by the angle that changes seamed edge and horizontal surface again, and in conjunction with stainless steel inner lining, reduce coal-fired cohesive resistance, to reach the possibility that significantly reduces chute blockage.And, because this run coal bin export structure is not to use external structure to improve the chute blockage phenomenon, do not need to set up attached mechanical device, can not increase initial cost, not only provide cost savings investment, the problem that does not more exist traditional clogging-preventing measures to bring.
Description of drawings
Fig. 1 is the structural representation of prior art run coal bin export structure;
Fig. 2 is the structural representation of the utility model run coal bin export structure;
Fig. 3 is the birds-eye view of the utility model run coal bin export structure.
The specific embodiment
The utility model run coal bin export structure, described run coal bin export structure is connected with coal conveyer belt.As shown in Figures 2 and 3, described run coal bin export structure includes body 11 and is arranged at the lining body 12 of described body 11 inside, and the shape of described lining body 12 and described body 11 are complementary.Described body 11 cross-sectional planes be shaped as rectangle, and long limit and the coal conveyer belt of this rectangle be arranged in parallel.The width B of described body 11 bottom surfaces matches with the width of coal conveyer belt, is slightly less than the width of coal conveyer belt, and described body 11 be able to be positioned on the described coal conveyer belt; The length L of described body 11 is then unrestricted, can make length L greater than the width of coal conveyer belt according to user's needs setting, improves coal-feeding quantity.
In the present embodiment, preferred described body 11 outlet sizes are B=900mm, L=1800mm, and the sectional area of run coal bin outlet therefore of the present utility model is S
2=0.9 * 1.8=1.62m
2And the diameter of the circular run coal bin outlet of prior art generally is no more than Φ 900mm, and its sectional area is S
1=3.14 * (0.9/2)
2=0.64m
2, S
2/ S
1=1.62/0.64=2.53, the flow area that is the utility model run coal bin exit mechanism is 2.5 times of traditional run coal bin export structure, like this, even in the situation that the sticking coal of run coal bin export structure limit wall occurs, also can guarantee to have enough passages and satisfy the supply of coal amount.
The leaning angle of described body 11 sidewalls is greater than 70 degree, and the leaning angle of the seamed edge 13 that described body 11 adjacent two sidewalls are connected to form is greater than 70 degree.Like this, in the situation that fire coal is wet, especially the relatively poor CFBB duff of flowing power has reduced coal-fired horizontal component of force from seamed edge 13, and then reduces consequent fire coal and the adhesive ability that serves as a contrast body 12.Further, the inboard of described body 11 adjacent two sidewall junctions (being the described seamed edge place that is arranged at described intrinsic lining body) is set to chamfering, to reduce the duff particle in the inboard bonding of seamed edge.
The material of described lining body 12 is corrosion-resistant steel.On the one hand, can reduce the friction drag of run coal bin export structure inboard, reduce the coal-fired bonding of wall within it; On the other hand, because fire coal contains certain free surface moisture and other acidic materials, have certain corrosive property, and the lining body 12 that corrosion-resistant steel is made can address the above problem, body 11 is played a protective role.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. run coal bin export structure, it is connected with the coal supply belt, it is characterized in that, it includes body, the shape of cross section of described body is rectangle, and long limit and the coal conveyer belt of described body be arranged in parallel, and the width of described body bottom surface matches with the width of coal conveyer belt, and its length is greater than the width of coal conveyer belt.
2. run coal bin export structure according to claim 1 is characterized in that, the leaning angle of described body sidewall is greater than 70 degree.
3. run coal bin export structure according to claim 1 and 2 is characterized in that, the leaning angle of the seamed edge that adjacent two sidewalls of described body are connected to form is greater than 70 degree.
4. run coal bin export structure according to claim 1 is characterized in that, the inboard of adjacent two the sidewall junctions of described body is set to chamfering.
5. according to claim 1 or 4 described run coal bin export structures, it is characterized in that, be provided with the lining body that matches with described body in the described body, the material of described lining body is corrosion-resistant steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367018 CN202765613U (en) | 2012-07-27 | 2012-07-27 | Raw coal bunker outlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367018 CN202765613U (en) | 2012-07-27 | 2012-07-27 | Raw coal bunker outlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202765613U true CN202765613U (en) | 2013-03-06 |
Family
ID=47772205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367018 Expired - Fee Related CN202765613U (en) | 2012-07-27 | 2012-07-27 | Raw coal bunker outlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202765613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151628A (en) * | 2015-08-11 | 2015-12-16 | 中冶赛迪工程技术股份有限公司 | Stock yard |
-
2012
- 2012-07-27 CN CN 201220367018 patent/CN202765613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151628A (en) * | 2015-08-11 | 2015-12-16 | 中冶赛迪工程技术股份有限公司 | Stock yard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20190727 |