CN202432531U - Bottom slag conveying device for high-slag-quantity coal-fired power plant - Google Patents
Bottom slag conveying device for high-slag-quantity coal-fired power plant Download PDFInfo
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- CN202432531U CN202432531U CN2012200017672U CN201220001767U CN202432531U CN 202432531 U CN202432531 U CN 202432531U CN 2012200017672 U CN2012200017672 U CN 2012200017672U CN 201220001767 U CN201220001767 U CN 201220001767U CN 202432531 U CN202432531 U CN 202432531U
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- slag
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- dragveyer
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Abstract
The utility model belongs to the technical field of bottom slag treatment for coal-fired generating set and particularly relates to a bottom slag conveying device for a large-slag-quantity power plant. A slag conveyer is arranged at the bottom of a boiler, the head part of the slag conveyer is arranged at the outer side of a boiler room, a slag bin is arranged under the head part, and the slag conveyer is structured in the following way: an oblique trough body is arranged on the head part of a horizontal trough body to form a slag conveying trough, a driving device is arranged at one end of the slag conveying trough, a driven shaft with a tensioning device is arranged at the other end of the slag conveying trough, a guide shaft is arranged at the corner in the middle of the slag conveying trough, chain wheels are arranged on the driving shaft, the guide shaft and the driven shaft, a chain transmission device is sleeved on the chain wheels, scraper blades are uniformly arranged on the chain transmission device at intervals, and a return trough of the chain transmission device is arranged on the lower part of the slag conveying trough. The utility model has the following advantages: the slag conveyer and the slag bin are in a one-step bin loading structure; the structure is simple, the reliability is high and the maintenance cost is low; the safety benefit, energy conservation and emission reduction benefit, the economical benefit and the comprehensive benefit are remarkable; and the bottom slag conveying device is suitable for the bottom treatment of the coal-fired generating sets.
Description
Technical field
The utility model belongs to slag processing technology field at the bottom of the coal fired power generation unit, refers in particular to a kind of end slag transport that adapts to the big quantity of slag in coal-burning power plant.
Background technology
The function of the end slag treatment system of coal fired power generation unit be with the furnace bottom slag that boiler combustion produces collect, cooling, and continuously end slag is delivered to the slag warehousing from furnace bottom and deposits, transports, at present; The end slag treatment system of general coal fired power generation unit mainly comprises dragveyer, slag crusher, two-stage scraper conveyer, slag storehouse etc., and this system adopts that two-step way removes the gred, defeated slag, and the slag that dragveyer generates coal dust firing in the stove is pulled out continuously and after the slag crusher fragmentation, is delivered to two slag storehouses by the two-stage scraper machine and through two-way belt feeder from burner hearth bottom; Its shortcoming is: two-stage scraper machine fault rate is high, has had a strong impact on electric weight completion rate and economic benefit, and slag crusher, two-stage scraper and two-way belt equipment dependability are poor; Two-stage scraper design inclination angle is bigger, and the head slag that falls is out of condition, and that scraper plate length is scraped board size more than dragveyer is little; Can not satisfy the treating capacity of dragveyer, two-stage scraper chain bar running speed is fast during operation, driving toothed plate, chain, serious wear such as device, scraper plate, glass cermaic plate in succession; The replacing spare part is frequent; Operating cost is high, and two-stage scraper drive end unit pulp water enters the bottom Bilge, and the separating effect of slag, water is relatively poor; Cause the bottom blow-down mouth often to stop up; The working site pulp water is seen everywhere, and needs manual work to clear up, the vivid extreme difference of carrying out production strictly in line with rules and regulations.
Summary of the invention
The purpose of the utility model provides a kind of furnace bottom slag that directly boiler combustion is produced and is delivered to the slag storehouse, can realize the end slag transport of dragveyer to the big quantity of slag in coal-burning power plant of the one-level conveying pattern in slag storehouse.
The purpose of the utility model is achieved in that
Adapt to the end slag transport of the big quantity of slag in coal-burning power plant, the head of dragveyer is arranged on the outside of boiler room, and lower head is provided with the slag storehouse; The concrete structure of dragveyer is: extended upward the skewed slot body at the head inclination of horizontal cell body and formed and drag for slag chute; Be provided with the driving shaft that drives with drive unit at an end that drags for slag chute, the other end is provided with the driven shaft of band tensioning apparatus, and middle part corner is provided with the axis of guide; Driving shaft, the axis of guide and driven shaft are provided with sprocket wheel; Be set with the chain conveyer on the sprocket wheel, be provided with scraper plate on the chain conveyer evenly and at intervals, the bottom of dragging for slag chute is provided with chain conveyer return slot.
Be set side by side with two slag storehouses on the slag storehouse fixed mount of above-mentioned dragveyer head downside, the top in the middle of two slag storehouses is provided with ship type electric three passes baffle plate, and the electric three passes baffle plate can be sent into the wet slag that dragveyer is delivered to top, slag storehouse in two slag storehouses at interval.
Described transport is provided with a plurality of video monitoring apparatus with the real-time teletransmission of operation picture to control room.
The above-mentioned sprocket wheel that is provided with on the axis of guide that drags in the slag chute of stating is a water seal type immersion wheel.
Oblique ascension angle≤35 of above-mentioned skewed slot body °, the bottom land of skewed slot body is provided with antiwear lining plate.
Above-mentioned tensioning apparatus is arranged on the afterbody of horizontal cell body, and tensioning apparatus comprises hydraulic auto tensioner and mechanical tensioning device.
The arranged outside of above-mentioned skewed slot body has the People's Bank of China's cat ladder with skewed slot body same slope, and the arranged outside of People's Bank of China's cat ladder has guardrail.
The utility model is compared the outstanding and beneficial technical effects of prior art:
1, the utility model adds the two-stage scraper machine with old dragveyer and carries pattern to change the one-level conveying pattern of dragveyer to the slag storehouse into to the two-stage in slag storehouse; Realized the upward technological transformation in storehouse of a step; Have advantages such as simple in structure, that reliability is high, maintenance cost is low, and the working site is clean and tidy, clean, need not artificial nurse, cleaning; The work of carrying out production strictly in line with rules and regulations is greatly improved, and greatly reduces potential safety hazard.
2, the utility model has directly reduced the spare part expense of upstream device and the power consumption of electrical equipment, has also practiced thrift a large amount of labour costs, safety benefit and energy-saving and emission-reduction remarkable benefit simultaneously.
3, the technology maturation of the utility model has reduced the fault rate of the two-way belt feeder of scraper plate and slag storehouse greatly, has ensured the operational efficiency and the operation stability of main frame, and economy and comprehensive benefit are obvious, and the end slag that is fit to the coal fired power generation unit is handled.
Description of drawings
Fig. 1 is the front view of the utility model.
Fig. 2 is the vertical view of the utility model.
Fig. 3 is the sketch map in the slag storehouse of the utility model.
Fig. 4 is the A-A cutaway view of this Fig. 1.
Among the figure: 1, dragveyer; 2, horizontal cell body; 3, tensioning apparatus; 4, chain conveyer return slot; 5, skewed slot body; 6, slag storehouse; 7, drive unit; 8, slag storehouse fixed mount; 9, skewed slot body bracing frame; 10, ground; 11, boiler water shrouding; 12, the axis of guide; The oblique ascension angle of X1, skewed slot body; 21, chain conveyer; 22, scraper plate; 23, antiwear lining plate; 30, electric three passes baffle plate; 31, big slag treatment trough; 41, oblique ascension section cover plate assembly; 42, guardrail; 43, cat ladder;
The specific embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-4;
The end slag transport that adapts to the big quantity of slag in coal-burning power plant; The head of dragveyer 1 is arranged on the outside of boiler room; Lower head is provided with slag storehouse 6, and the concrete structure of dragveyer 1 is: extended upward skewed slot body 5 at the head inclination of horizontal cell body 2 and formed and drag for slag chute, be provided with the driving shaft with drive unit 7 (for example motor) driving in the upper end of dragging for slag chute; Tail end is provided with the driven shaft of band tensioning apparatus 3; Middle part corner is provided with the axis of guide 12, and driving shaft, the axis of guide 12 and driven shaft are provided with sprocket wheel, are set with the chain conveyer on the sprocket wheel; Be provided with scraper plate 22 on the chain conveyer evenly and at intervals, the bottom of dragging for slag chute is provided with chain conveyer return slot 4.
The chain conveyer return slot 41 of dragveyer 1 is provided with enough spaces; To satisfy the maintenance needs of chain conveyer 21, scraper plate 22 etc.; Be provided with the measure that prevents that pulp water is excessive simultaneously; The both sides of chain conveyer return slot 41 are provided with inspection opening (window), so that can be at any time from the duty of visual examination chain conveyer 21, the bottom of chain conveyer return slot 41 be provided with cleaning accumulated slag device and drainage arrangement; Be used for flushing pollution discharge and accident draining, the afterbody of chain conveyer return slot 41 is provided with the pushing off the slag cover.
The tops that are set side by side with on the slag storehouse fixed mount of dragveyer 1 head downside in the middle of 6, two slag storehouses, two slag storehouses 6 are provided with ship type electric three passes baffle plate, and the electric three passes baffle plate can be sent into the wet slag that dragveyer 1 is delivered to top, slag storehouse in two slag storehouses 6 at interval.
The passage of mucking haulage of closed dump truck is left in the slag storehouse for 6 times; End slag is sent to an ash storage after the entrucking herein; Or outward transport comprehensive utilization; The overflow water of dragveyer 1 and slag storehouse 6 bleeds through raceway groove (pipeline) introduce be arranged near the dragveyer 1 the overflow pond in, be delivered to high-efficiency concentrator by the overflow water pump and carry out clarifying treatment.Through the water of precipitation process by system in set storage cistern collect, carry back in the dragveyer 1 through water pump, the cooling water as end slag recycles.
Above-mentioned drive unit is fluid pressure drive device or Vidacare corp; Fluid pressure drive device comprises low speed high torque hydraulic motor and Hydraulic Station; Hydraulic motor is the radial plunger type inner curve motor; Its output shaft directly links to each other with driving shaft, and Vidacare corp is motor and speed changer, and motor is through outputting power behind the speed changer.
Above-mentioned fluid pressure drive device is a closed-loop hydraulic system; Comprise a complete set of annexes such as alternating current generator, hydraulic pump, filter, cooler, monitoring sensor, fuel tank, control system; Hydraulic pump is a shaft orientation plunger variable pump, and with the stepless speed regulation of realization hydraulic motor, thereby the speed of service that realizes dragveyer 1 changes with load variations; And has a soft start function; The even running of assurance equipment reduces the impact to parts such as chain conveyer 21, scraper plates 22 simultaneously, and the startup output torque of hydraulic pump can guarantee dragveyer 1 operate as normal still under full-loading condition.
The oblique ascension angle X1 of above-mentioned skewed slot body 5≤35 °, the bottom land of skewed slot body 5 is provided with antiwear lining plate 23, helps slag dehydration, and the slag moisture content of discharging from the upper end of the skewed slot body 5 of dragveyer 1 is not higher than 20%.
The tensioning apparatus 3 that is arranged on horizontal cell body 2 afterbodys comprises hydraulic auto tensioner and mechanical tensioning device; Hydraulic auto tensioner can keep tensile force constant; And in time absorbing the increment after dragveyer drags 21 wearing and tearing of chain conveyer, tensioning apparatus is provided with guarantees the reliable unidirectional non-return device of tensioning.
Dragveyer 1 head slag notch is provided with big clinker separator and big clinker slag-drip opening; The slag notch of dragveyer 1 is provided with big slag double-edged fine-toothed comb and checkout gear; When occurring to surpass the big clinker of 400mm through the particle diameter of big slag double-edged fine-toothed comb; Checkout gear sends alarm signal and controls slag storehouse control panel big slag is discharged, and carries out fragmentation by manual work.
Dragveyer 1 also is provided with following interlock protection warning function: the alarm and protection of overcurrent, overload; Chain rupture, chain jamming, fall the alarm and protection of chain; Dragveyer 1 tach signal; Water temperature shows and overtemperature alarm; Water level has monitoring and control device; The warning of oil system, protection, interlocking and dragveyer blanking port putty warning (big clinker), electric three passes valve position signal and fault-signal thereof.
Be provided with the bleed element of the moisture of further sloughing in the wet slag in the slag storehouse 6, the bleed element adopts outlet structure, and porous nickel has enough rigidity and intensity.
Described transport is provided with a plurality of video monitoring apparatus with the real-time teletransmission of operation picture to control room.
The sprocket wheel that is provided with on the above-mentioned axis of guide 12 that drags in the slag chute (promptly dragging for the interior horizontal cell body of slag chute and the sprocket wheel of skewed slot body junction) is a water seal type immersion wheel 121.
The arranged outside of above-mentioned skewed slot body 5 has the People's Bank of China's cat ladder 43 with skewed slot body 5 same slope, and the arranged outside of People's Bank of China's cat ladder 43 has guardrail 42.
The foregoing description is merely the preferred embodiment of the utility model, is not the protection domain that limits the utility model according to this, so: the equivalence that all structures according to the utility model, shape, principle are done changes, and all should be covered by within the protection domain of the utility model.
Claims (8)
1. adapt to the end slag transport of the big quantity of slag in coal-burning power plant, it is characterized in that: the head of dragveyer is arranged on the outside of boiler room, and lower head is provided with the slag storehouse; The concrete structure of dragveyer is: extended upward the skewed slot body at the head inclination of horizontal cell body and formed and drag for slag chute; Be provided with the driving shaft that drives with drive unit at an end that drags for slag chute, the other end is provided with the driven shaft of band tensioning apparatus, and middle part corner is provided with the axis of guide; Driving shaft, the axis of guide and driven shaft are provided with sprocket wheel; Be set with the chain conveyer on the sprocket wheel, be provided with scraper plate on the chain conveyer evenly and at intervals, the bottom of dragging for slag chute is provided with chain conveyer return slot.
2. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant; It is characterized in that: be set side by side with two slag storehouses on the slag storehouse fixed mount of described dragveyer head downside; Top in the middle of two slag storehouses is provided with ship type electric three passes baffle plate, and the electric three passes baffle plate can be sent into the wet slag that dragveyer is delivered to top, slag storehouse in two slag storehouses at interval.
3. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant is characterized in that: described transport is provided with a plurality of video monitoring apparatus with the real-time teletransmission of operation picture to control room.
4. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant is characterized in that: the sprocket wheel that is provided with on the said axis of guide that drags in the slag chute is a water seal type immersion wheel.
5. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant is characterized in that: oblique ascension angle≤35 of described skewed slot body °, the bottom land of skewed slot body is provided with antiwear lining plate.
6. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant, it is characterized in that: described tensioning apparatus is arranged on the afterbody of horizontal cell body, and tensioning apparatus comprises hydraulic auto tensioner and mechanical tensioning device.
7. the end slag transport of the big quantity of slag in adaptation according to claim 1 coal-burning power plant is characterized in that: described drive unit is fluid pressure drive device or Vidacare corp.
8. according to the end slag transport of each big quantity of slag in described adaptation coal-burning power plant of claim 1-7, it is characterized in that: the arranged outside of described skewed slot body has the People's Bank of China's cat ladder with skewed slot body same slope, and the arranged outside of People's Bank of China's cat ladder has guardrail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200017672U CN202432531U (en) | 2012-01-05 | 2012-01-05 | Bottom slag conveying device for high-slag-quantity coal-fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200017672U CN202432531U (en) | 2012-01-05 | 2012-01-05 | Bottom slag conveying device for high-slag-quantity coal-fired power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432531U true CN202432531U (en) | 2012-09-12 |
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ID=46781972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200017672U Expired - Fee Related CN202432531U (en) | 2012-01-05 | 2012-01-05 | Bottom slag conveying device for high-slag-quantity coal-fired power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432531U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997257A (en) * | 2012-12-13 | 2013-03-27 | 河南华润电力首阳山有限公司 | Control method and system of submerged chain conveyor |
| CN103834443A (en) * | 2014-03-26 | 2014-06-04 | 青岛正大正电力环保设备有限公司 | Slag conveyor of powdered coal pressurizing gasifier |
| US10683178B2 (en) | 2016-09-12 | 2020-06-16 | Vermeer Manufacturing Company | Systems and methods for processing earthen slurries |
| CN112938348A (en) * | 2021-01-18 | 2021-06-11 | 中国能源建设集团广东省电力设计研究院有限公司 | Storage facilities is carried to slag at bottom of boiler |
-
2012
- 2012-01-05 CN CN2012200017672U patent/CN202432531U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997257A (en) * | 2012-12-13 | 2013-03-27 | 河南华润电力首阳山有限公司 | Control method and system of submerged chain conveyor |
| CN102997257B (en) * | 2012-12-13 | 2015-09-02 | 河南华润电力首阳山有限公司 | Dragveyer control method and system |
| CN103834443A (en) * | 2014-03-26 | 2014-06-04 | 青岛正大正电力环保设备有限公司 | Slag conveyor of powdered coal pressurizing gasifier |
| US10683178B2 (en) | 2016-09-12 | 2020-06-16 | Vermeer Manufacturing Company | Systems and methods for processing earthen slurries |
| CN112938348A (en) * | 2021-01-18 | 2021-06-11 | 中国能源建设集团广东省电力设计研究院有限公司 | Storage facilities is carried to slag at bottom of boiler |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20130105 |