CN2416379Y - Automatic adjustable cascade blades pulverized coal distributor - Google Patents
Automatic adjustable cascade blades pulverized coal distributor Download PDFInfo
- Publication number
- CN2416379Y CN2416379Y CN 00211364 CN00211364U CN2416379Y CN 2416379 Y CN2416379 Y CN 2416379Y CN 00211364 CN00211364 CN 00211364 CN 00211364 U CN00211364 U CN 00211364U CN 2416379 Y CN2416379 Y CN 2416379Y
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- CN
- China
- Prior art keywords
- rectangle frame
- cascade
- frame housing
- cascade axis
- axis
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an automatic pulverized coal distributor with adjustable cascade blades. An upper opening and a lower opening are arranged on a body frame shell of the distributor, and a reducing pipe is arranged under the frame shell; the reducing pipe has the structure that the upper part of the reducing pipe is square, and the lower part is round. At least one group of cascade axis assembly fixed with cascades is arranged in the body frame shell. Both ends of the cascade axis threads out from both side walls of the frame shell; when rotated, the cascade axis is supported by both of the two side walls of the frame shell. A crank piece which is hinged with a crank link mechanism is fixed with one end of the cascade axis, and the end of the cascade axis, threading out from the side wall, is suspended on the side wall of the frame shell; the crank link mechanism is driven by a motor. According to the condition of the combustion of a boiler, the cascades are regulated automatically by a microcomputer control system to improve the efficiency of the distribution of pulverized coal, and the boiler can be in a best state of combustion. The utility model is suitable for being used in a pulverized coal making system with direct feed pulverized coal-fan mill in a large thermal power plant.
Description
The utility model relates to a kind of automatic and adjustable leaf grating pulverized coal distributor, and particularly suitable uses in large-size thermal power plant direct feed pulverized coal-fan mill pulverized coal preparation system, belongs to the improvement of coal dust isolation technics.
The pulverized coal distributors that adopt carry out rationalization's boiler combustion and effective control temperature field in furnace more in the coal dust unit at present, improve the boiler operatiopn state.And baffle-type that usually adopts or straight guide-plate type pulverized coal distributor generally only are applicable to and use in the medium-speed pulverizer unit pulverized-coal system, and its gas, fixed double phase flow speed field and concentration field current-sharing weak effect, flow resistance is big, the distributor serious wear, research arranged in recent years a kind of to be the technology of differential expression coal dust divider be to fixedly install the coal dust divider of dividing equally lattice structure a kind of having, though dividing equally the more aforementioned divider effect of effect, it has greatly improved, but above-mentioned many dividers all can not be adjusted as required at any time automatically to the distribution of coal dust, to adapt to the needs of boiler combustion state, operating position can not be satisfactory.
The purpose of this utility model is the many weak points at above-mentioned existence, provides a kind of leaf grating can be according to boiler combustion situation needs, the automatic and adjustable leaf grating pulverized coal distributor that can adjust automatically at any time.
The purpose of this utility model is achieved in that a kind of automatic and adjustable leaf grating pulverized coal distributor, on its distributor body tool one, under shed, the top has the rectangle frame housing of flange, its below is connected with the Coal-disintegrating machine separator outlet through tool old name for the Arabian countries in the Middle East ground circle structure reducer pipe, its upper flange and an airduct road interlink, last, be provided with at least one group of cascade axis assembly that leaf grating is housed on it in the rectangle frame housing of under shed, rectangle frame housing sidewall that the vertical respectively break-through two in these cascade axis two ends is parallel to each other relatively and rotating support are on it, be provided with seal cover sealing cover on it respectively at the external part axle place that cascade axis passes rectangle frame housing two sidewalls, pass the rectangle frame housing at cascade axis, wherein a sidewall stretch out also be fixed with on the end axle of suspending one with the crank throw spare of the perpendicular setting of cascade axis, the end place that suspends on crank throw spare has through hole, be hinged through the vertical hinge in the big gap of apparatus and toggle on it by driven by motor, this motor is rotated by Control System of Microcomputer control, on the rectangle frame housing sidewall of corresponding position, crank throw spare place, also can be provided with a corner indicating dial, to show the adjustment angle value of cascade axis.The utility model pulverized coal distributor motor can be controlled by Control System of Microcomputer, can adjust control driven by motor leaf grating automatically by boiler combustion situation at that time rotates, advancing your change pulverized coal distributor distributes along the coal dust on the furnace height direction, with the needs of better adaptation boiler combustion, make boiler operatiopn in optimum state.
Description of drawings:
Fig. 1 is the utility model outward appearance front view.
Fig. 2 overlooks enlarged drawing for Fig. 1.
Fig. 3 is Fig. 1 left view.
Further illustrate the utility model automatic and adjustable leaf grating pulverized coal distributor structure technology feature below in conjunction with embodiment.
A kind of automatic and adjustable leaf grating pulverized coal distributor that in large-size thermal power plant, uses of embodiment
Present embodiment is a kind of embodiment of the present utility model, be applicable in the large-size thermal power plant direct feed pulverized coal-fan mill pulverized coal preparation system and use, be installed between separator for coal mill outlet and the burner, present embodiment automatic and adjustable leaf grating pulverized coal distributor tool one upper and lower opening has the rectangle frame housing (2) of flange, its below reducer pipe (1) Joint of flange (9) and tool old name for the Arabian countries in the Middle East ground circle structure, form distributor body frame shell, its below exports communications and liaison mutually with separator for coal mill; Flange (6) and airduct road communications and liaison are mutually then used in its top; Last, in the rectangle frame housing (2) of under shed along crossing and the boiler mouthful horizontal axis of place plane parallel of delivering coal becomes an angle of cut with plane, boiler mouth place, uniformly successively from the bottom to top in the plane that is provided be provided with 8 groups of cascade axis assemblies, on its 8 cascade axis that are parallel to each other (14), be connected with 8 leaf gratings that are parallel to each other (13), rectangle frame housing sidewall that the respectively vertical break-through two in cascade axis (14) two ends is parallel mutually and rotating support are on it, pass at cascade axis on the external part axle of rectangle frame housing two opposing sidewalls and be provided with seal cover (15), wherein a side projecting shaft suspend the end axle go up with its perpendicular same plane in also be connected with 8 respectively and move towards identical, the crank throw spare that is parallel to each other (7).The end corresponding position that suspends on 8 crank throw spares also has through hole, vertical hinge in the big gap of apparatus through connecting rod (3) respectively on it, be hinged in twos and fuse, the linkage operation, this connecting rod (3) also can be made into one and connects, drive motors (12) is hinged through crank linkage (11) and crank throw spare, this crank throw spare can be above-mentioned 8 crank throw spares that are parallel to each other one of them, also can establish in addition separately.On the rectangle frame housing wall of corresponding position, a cascade axis external part place, also be provided with dial (5), with pointer member (4) phase configuration setting affixed on this cascade axis external part axle, in order to show the adjustment rotational angle value of cascade axis, for strengthening the rigidity of distributor body, present embodiment also has been horizontally disposed with gusset (8) on rectangle frame hull outside wall, for overhauling conveniently, present embodiment also has manhole (10) and uses when being used for overhauling on the rectangle frame housing.The present embodiment motor is controlled through Control System of Microcomputer, can need to adjust leaf grating automatically by the actual conditions of boiler combustion and rotate.In the present embodiment deliver coal with boiler and become 63 ° of angles between mouthful plane, place in plane, 8 groups of leaf arbor places, can make present embodiment tool optimum Working.
During work, Control System of Microcomputer is carried out analyzing and processing to the feeder revolution, flue gas temperature of hearth outlet, active power value, the Control Stage of Steam Turbine pressure and other parameters value that are obtained by sensor, be transformed into corresponding control signal, driving motor through digital output current control servo amplifier rotates, advancing you makes leaf grating forward the coal dust amount that respective angles is adjusted each wind inlet automatically to, change the burner flame centre-height, make it operate in optimum state, adopt the automatic and adjustable leaf grating pulverized coal distributor of present embodiment can obtain following beneficial effect.
1. can effectively adjust along the Load Distribution of furnace height direction, change the flame kernel height, adjust furnace outlet gas temperature, advance you and adjust overheated temperature and hot gas temperature again.
2. can carry out deep or light separation to wind breeze airflow of whole stove, and realize regulating continuously,, reduce during underload and help fuel oil, satisfy the demand of regulating when load, coal, ature of coal etc. change to improve the flame holding of pulverized-coal fired boiler.
3. can realize whole fractional combustion, change cinder character, alleviate coking situation in the stove, and reduce NO greatly
xDischarge capacity.
Present embodiment automatic and adjustable leaf grating pulverized coal distributor uses proof through actual experiment, its coal dust that can effectively control position, burner upper, middle and lower distributes, realization is to the continuous adjusting of furnace flame centre-height, the furnace outlet temperature is obviously descended, overheated desuperheating water injected volume significantly reduces, and the reheater desuperheating water is not thrown substantially, and combustion chamber draft is normal, the stove internal combustion is stable, can improve the thermal efficiency about 1.3%.
Present embodiment automatic and adjustable leaf grating pulverized coal distributor is owing to adopted Control Technique of Microcomputer, can adjust the corner of leaf grating according to the unit operation situation, and with digital angles of display control setting value, help follow-up investigations, the seasonable adjustment, output and warning function are handled, shown to real sampling, data when this Control System of Microcomputer had online preferably the setting.
Claims (4)
1. automatic and adjustable leaf grating pulverized coal distributor, it is characterized in that on the tool one, under shed, the top has the rectangle frame housing of flange, its below is connected with the Coal-disintegrating machine separator outlet through tool old name for the Arabian countries in the Middle East ground circle structure reducer pipe, its upper flange and an airduct road interlink, last, be provided with at least one group of cascade axis assembly that leaf grating is housed on it in the rectangle frame housing of under shed, rectangle frame housing sidewall that the vertical respectively break-through two in these cascade axis two ends is parallel to each other relatively and rotating support are on it, be provided with seal cover sealing cover on it respectively at the external part axle place that cascade axis passes rectangle frame housing two sidewalls, pass the rectangle frame housing at cascade axis, wherein a sidewall stretch out also be fixed with on the end axle of suspending one with the crank throw spare of the perpendicular setting of cascade axis, the end place that suspends on crank throw spare has through hole, is hinged through the vertical hinge in the big gap of apparatus and toggle by driven by motor on it.
2. according to the described distributor of claim 1, it is characterized in that tool one upper and lower opening has the rectangle frame housing (2) of flange, its below reducer pipe (1) Joint of flange (9) and tool old name for the Arabian countries in the Middle East ground circle structure, form distributor body frame shell, its below exports communications and liaison mutually with separator for coal mill; Flange (6) and airduct road communications and liaison are mutually then used in its top; Last, in the rectangle frame housing (2) of under shed along crossing and the boiler mouthful horizontal axis of place plane parallel of delivering coal becomes an angle of cut with plane, boiler mouth place, uniformly successively from the bottom to top in the plane that is provided be provided with 8 groups of cascade axis assemblies, on its 8 cascade axis that are parallel to each other (14), be connected with 8 leaf gratings that are parallel to each other (13), rectangle frame housing sidewall that the respectively vertical break-through two in cascade axis (14) two ends is parallel mutually and rotating support are on it, pass at cascade axis on the external part axle of rectangle frame housing two opposing sidewalls and be provided with seal cover (15), wherein a side projecting shaft suspend end axle go up with its perpendicular same plane in also be connected with 8 respectively and move towards identical, the crank throw spare that is parallel to each other (7), the end corresponding position that suspends on 8 crank throw spares also has through hole, vertical hinge in the big gap of apparatus through connecting rod (3) respectively on it, being hinged in twos fuses, and drive motors (12) is hinged through crank linkage (11) and crank throw spare.
3. according to claim 1 or 2 described distributors, it is characterized in that on the rectangle frame housing wall of corresponding position, a cascade axis external part place, also being provided with dial (5), with pointer member (4) phase configuration setting affixed on this cascade axis external part axle.
4. according to claim 1 or 2 described distributors, it is characterized in that plane, 8 groups of leaf arbor places and boiler are delivered coal and become 63 ° of angles between mouthful plane, place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211364 CN2416379Y (en) | 2000-04-05 | 2000-04-05 | Automatic adjustable cascade blades pulverized coal distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00211364 CN2416379Y (en) | 2000-04-05 | 2000-04-05 | Automatic adjustable cascade blades pulverized coal distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416379Y true CN2416379Y (en) | 2001-01-24 |
Family
ID=33578072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00211364 Expired - Lifetime CN2416379Y (en) | 2000-04-05 | 2000-04-05 | Automatic adjustable cascade blades pulverized coal distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416379Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822224A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Full automatic coal powder concentration regulator of coal grinder |
| CN104390227A (en) * | 2014-11-19 | 2015-03-04 | 中节环（北京）环境科技股份有限公司 | Device with pulverized coal separator between coal mill and burner |
| CN104676628A (en) * | 2013-12-03 | 2015-06-03 | 吉林省电力科学研究院有限公司 | Intelligent distribution system for medium-speed coal mill |
-
2000
- 2000-04-05 CN CN 00211364 patent/CN2416379Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676628A (en) * | 2013-12-03 | 2015-06-03 | 吉林省电力科学研究院有限公司 | Intelligent distribution system for medium-speed coal mill |
| CN103822224A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Full automatic coal powder concentration regulator of coal grinder |
| CN104390227A (en) * | 2014-11-19 | 2015-03-04 | 中节环（北京）环境科技股份有限公司 | Device with pulverized coal separator between coal mill and burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010124 |