CN204197893U - A kind of accurately Coal Blending System - Google Patents
A kind of accurately Coal Blending System Download PDFInfo
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- CN204197893U CN204197893U CN201420580836.9U CN201420580836U CN204197893U CN 204197893 U CN204197893 U CN 204197893U CN 201420580836 U CN201420580836 U CN 201420580836U CN 204197893 U CN204197893 U CN 204197893U
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- coal
- breaking device
- transhipment belt
- blending system
- frequency conversion
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Abstract
A kind of accurately Coal Blending System, described Coal Blending System comprises some cover coal bunkers and frequency conversion feeder, the frequency conversion feeder of supporting setting is connected with corresponding coal bunker, to produce coal speed for controlling this coal bunker, a kind of fuel only placed by each coal bunker, described Coal Blending System also comprises by transhipment belt, belted electronic balance, one-level sieve breaking device, the travel line of secondary sieve breaking device composition, the mouth of described frequency conversion feeder, one-level sieve breaking device, secondary sieve breaking device is connected by described transhipment belt successively, and by described transhipment belt, coal storage place is delivered in the output of described secondary sieve breaking device, described belted electronic balance be arranged on be positioned at described frequency conversion feeder mouth transhipment belt below, for measuring the coal output of each coal bunker, so that the running frequency of each described frequency conversion feeder of coal-fired proportioning adjustment according to this coal output and plan, each coal bunker coal-fired proportioning is according to schedule produced coal, realize accurate coal blending.
Description
Technical field
The utility model relates to a kind of belt Coal Blending System being applied in boiler power station.
Background technology
It is reported, in order to pursue maximum economic benefit, all there is larger difference with design fire coal in the fire coal that most CFB boiler and CFBB use.The fire coal of CFB boiler is at present or based on coal blending of manually grabbing bucket, and namely in the ratio of coal blending, first grab wherein a kind of fuel, then grab the rough mixing coal blending mode of another kind of fuel, in fire coal, the mixing uniformity of various fuel and the accuracy of proportioning all cannot ensure.Although adaptable to fire coal of CFB boiler, the fire coal of different calorific value is when joining burning, if mix uneven or proportioning is inaccurate, easily cause boiler operatiopn unstable, bed temperature, main vapour pressure fluctuate, and even cause the problems such as boiler extinguishment.
Utility model content
Goal of the invention of the present utility model is to provide that a kind of fire coal mixes, the accurate Coal Blending System of proportion speed.
Foregoing invention object of the present utility model is achieved through the following technical solutions: a kind of accurately Coal Blending System, it is characterized in that, described Coal Blending System comprises some cover coal bunkers and frequency conversion feeder, the frequency conversion feeder of supporting setting is connected with corresponding coal bunker, to produce coal speed for controlling this coal bunker, a kind of fuel only placed by each coal bunker, described Coal Blending System also comprises by transhipment belt, belted electronic balance, one-level sieve breaking device, the travel line of secondary sieve breaking device composition, the mouth of described frequency conversion feeder, one-level sieve breaking device, secondary sieve breaking device is connected by described transhipment belt successively, and by described transhipment belt, coal storage place is delivered in the output of described secondary sieve breaking device, described belted electronic balance be arranged on be positioned at described frequency conversion feeder mouth transhipment belt below, for measuring the coal output of each coal bunker, so that the running frequency of each described frequency conversion feeder of coal-fired proportioning adjustment according to this coal output and plan.
The coal output of each coal bunker of the utility model belted electronic balance accurate-metering, and the relation of coal-fired proportioning according to this coal output and plan, adjust the running frequency of each frequency conversion feeder timely, thus each coal bunker coal-fired proportioning is according to schedule produced coal, in addition, the utility model also makes the various uniform fuel mixing of planned coal-fired proportioning configuration by two-stage sieve breaking device, thus ensures to make the coal-fired proportion speed of feeding boiler, mix.
Described one-level sieve breaking device is made up of the vibrating grizzly be connected successively and primary mill, and described secondary sieve breaking device is made up of the vibrating grizzly be connected successively and type fine disintegrating machine.
Improve as to one of the present utility model: set up belted electronic balance in the below of the transhipment belt being positioned at described secondary sieve breaking device mouth, to judge that whether the belted electronic balance below the above-mentioned transhipment belt being positioned at described frequency conversion feeder mouth is accurate, be convenient to timely calibration, be conducive to the accuracy improving the coal-fired proportioning of the utility model.
As to further improvement of the utility model, described travel line is more than two, transhipment belt before the one-level sieve breaking device input end of different travel line switches baffle plate by first and connects together, coal bunker described in several is connected according to corresponding from different travel line after the grouping of travel line number, design like this, not only be conducive to improving coal-fired transport efficiency, and be conducive to the quantity reducing the coal bunker be directly connected with every strip transmission line, be conducive to saving cost.
Further improve as of the present utility model, the transhipment belt of the broken equipment output end of secondary sieve of every strip transmission line all connects the transhipment belt of whole travel line coal storage places input end by the second switching baffle plate, can adjust the amount of the fire coal exported by different travel line easily according to manufacturing program.
As preferred implementation of the present utility model, the transhipment belt of described coal storage place input end is provided with several coal ploughs, described coal storage place is several stokehold coal bunkers arranged along the transhipment belt of described coal storage place input end, coal plough described in several is divided into the top of each described stokehold coal bunker, to output to the amount of the fire coal of travel line different stokeholds coal bunker easily according to manufacturing program adjustment.
Relative to prior art, the utility model has following beneficial effect:
The utility model can utilize belted electronic balance accurate-metering to go out the coal output of each coal bunker, and the relation of coal-fired proportioning according to this coal output and plan, by changing the running frequency of each frequency conversion feeder, each coal bunker coal-fired proportioning is according to schedule produced coal, realize accurate coal blending, in addition, the utility model also makes the various uniform fuel mixing of planned coal-fired proportioning configuration by two-stage sieve breaking device, the condition of readiness of the coal quantity after also verifying mixture by the belted electronic balance after two-stage sieve breaking device, thus ensure the coal-fired proportion speed making feeding boiler, mix, prevent boiler because the fuel ratio of different calorific value various in fire coal is inaccurate or mix uneven, there is fluctuation of service, bed temperature, main vapour pressure fluctuates, the even problem such as boiler extinguishment.
Accompanying drawing explanation
Fig. 1 is the accurate Coal Blending System structural representation of the utility model preferred embodiment.
Detailed description of the invention
As shown in Figure 1, the accurate Coal Blending System of the present embodiment comprises four cover coal bunkers and frequency conversion feeder A and C-01A, B and C-01B, C and C-02A, D and C-02B, the frequency conversion feeder of supporting setting is connected with corresponding coal bunker and is arranged in indoor coal storage yard G, to produce coal speed for controlling this coal bunker.Fuel is put into each coal all by transporter grab crane 1 by the present embodiment, and a kind of fuel only placed by each coal bunker.The Coal Blending System of the present embodiment comprises two strip transmission line C-A and C-B, and wherein, coal bunker A and C outputs to travel line C-A, and coal bunker B and D outputs to travel line C-B.
Every strip transmission line is all sieved breaking device M2 formed by transhipment belt, belted electronic balance 5, one-level sieve breaking device M1, secondary, the mouth of frequency conversion feeder, one-level sieve breaking device M1, secondary sieve breaking device M2 are connected by transhipment belt successively, and two furnace bin V1,2 and two furnace bin V3,4 of CFB boiler 2# of CFB boiler 1# in coal storage place and the present embodiment are delivered in the output of by transporting belt secondary being sieved breaking device M2.
Belted electronic balance 5 be arranged on be positioned at frequency conversion feeder mouth transhipment belt C-1A, C-1B, C-2A, C-2B below, for measuring the coal output of each coal bunker, to adjust the running frequency of each frequency conversion feeder according to the coal-fired proportioning of this coal output and plan, reach the object that the planned coal-fired proportioning of coal bunker is produced coal.
Transhipment belt before the one-level sieve breaking device M1 input end of different travel line C-A or C-B switches baffle plate S by first and connects together, the utility model adopts many strip transmission lines to carry fire coal simultaneously, be conducive to improving coal-fired transport efficiency, and can switch by switching baffle plate between different travel line, make the fuel that every strip transmission line can configure whole coal bunker quantity kind, be conducive to the quantity reducing the coal bunker be directly connected with wall scroll travel line, thus be conducive to saving cost.Mixture is carried out as system in Fig. 1 can realize at most 2 ~ 4 kinds of different fuels.
One-level sieve breaking device M1 is made up of the vibrating grizzly 4 be connected successively and primary mill 6, and secondary sieve breaking device M2 is made up of the vibrating grizzly 7 be connected successively and type fine disintegrating machine 8.
Also belted electronic balance 5 is had additional in the below of transhipment belt C-5A and C-5B being positioned at secondary sieve breaking device M2 mouth, this belted electronic balance 5 can be used for calibrating the belted electronic balance 5 below transhipment belt C-2A and C-2B being positioned at frequency conversion feeder mouth, is conducive to the accuracy improving the coal-fired proportioning of the utility model further.
Transhipment belt C-5A or C-5B of the secondary sieve breaking device M2 mouth of every strip transmission line connects transhipment belt C-6A and C-6B of whole travel line C-A and C-B furnace bin input end by the second switching baffle plate S, can adjust the amount of the fire coal exported by different travel line easily according to manufacturing program.
Transhipment belt C-6A and C-6B of coal storage place input end is provided with 14 coal plough A1 ~ A7, B1 ~ B7,14 coal plough A1 ~ A7, B1 ~ B7 are divided into the top of each furnace bin that transhipment belt C-6A and C-6B along furnace bin input end is arranged, to output to the amount of the fire coal at the different coal storage place of travel line easily according to manufacturing program adjustment.
The utility model application example: after adopting present design transformation to come into operation from December, 2010 to petrochemical industry dynamics factory thermoelectricity two workshop, CFB bunker coal proportioning more than 3 times is monthly changed although average, Coal Blending System of the present utility model all achieves accurate coal blending, does not occur because of coal blending inaccuracy or mixes and unevenly cause boiler operatiopn fluctuation of operating conditions situation.
Claims (6)
1. an accurate Coal Blending System, it is characterized in that, described Coal Blending System comprises some cover coal bunkers and frequency conversion feeder, the frequency conversion feeder of supporting setting is connected with corresponding coal bunker, to produce coal speed for controlling this coal bunker, a kind of fuel only placed by each coal bunker, described Coal Blending System also comprises by transhipment belt, belted electronic balance, one-level sieve breaking device, the travel line of secondary sieve breaking device composition, the mouth of described frequency conversion feeder, one-level sieve breaking device, secondary sieve breaking device is connected by described transhipment belt successively, and by described transhipment belt, coal storage place is delivered in the output of described secondary sieve breaking device, described belted electronic balance be arranged on be positioned at described frequency conversion feeder mouth transhipment belt below, for measuring the coal output of each coal bunker, so that the running frequency of each described frequency conversion feeder of coal-fired proportioning adjustment according to this coal output and plan.
2. accurate Coal Blending System according to claim 1, is characterized in that, described one-level sieve breaking device is made up of the vibrating grizzly be connected successively and primary mill, and described secondary sieve breaking device is made up of the vibrating grizzly be connected successively and type fine disintegrating machine.
3. accurate Coal Blending System according to claim 1 and 2, is characterized in that, sets up belted electronic balance in the below of the transhipment belt being positioned at described secondary sieve breaking device mouth.
4. accurate Coal Blending System according to claim 3, it is characterized in that, described travel line is more than two, transhipment belt before the one-level sieve breaking device input end of different travel line switches baffle plate by first and connects together, and coal bunker described in several is connected according to corresponding from different travel line after the grouping of travel line number.
5. accurate Coal Blending System according to claim 4, is characterized in that, the transhipment belt of the broken equipment output end of secondary sieve of every strip transmission line all connects the transhipment belt of whole travel line coal storage places input end by the second switching baffle plate.
6. accurate Coal Blending System according to claim 5, it is characterized in that, the transhipment belt of described coal storage place input end is provided with several coal ploughs, described coal storage place is several stokehold coal bunkers arranged along the transhipment belt of described coal storage place input end, and coal plough described in several is divided into the top of each described stokehold coal bunker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420580836.9U CN204197893U (en) | 2014-10-09 | 2014-10-09 | A kind of accurately Coal Blending System |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420580836.9U CN204197893U (en) | 2014-10-09 | 2014-10-09 | A kind of accurately Coal Blending System |
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| CN204197893U true CN204197893U (en) | 2015-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646100A (en) * | 2019-11-25 | 2020-09-11 | 泰富重工制造有限公司 | Power supply system for long-distance belt conveyor |
| CN115610950A (en) * | 2022-11-09 | 2023-01-17 | 重庆钢铁股份有限公司 | Dry-based coal blending system and method |
-
2014
- 2014-10-09 CN CN201420580836.9U patent/CN204197893U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111646100A (en) * | 2019-11-25 | 2020-09-11 | 泰富重工制造有限公司 | Power supply system for long-distance belt conveyor |
| CN115610950A (en) * | 2022-11-09 | 2023-01-17 | 重庆钢铁股份有限公司 | Dry-based coal blending system and method |
| CN115610950B (en) * | 2022-11-09 | 2024-05-28 | 重庆钢铁股份有限公司 | Dry-base coal blending system and method |
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