CN103277806A

CN103277806A - Communicating pipe air distribution grate

Info

Publication number: CN103277806A
Application number: CN201310228062.3A
Authority: CN
Inventors: 郭古金; 郭家源; 郭祥吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-09
Filing date: 2013-06-09
Publication date: 2013-09-04

Abstract

A communicating pipe air distribution grate belongs to the field of boilers. The whole grate is formed by welding a common carbon steel square pipe and a common carbon steel circular pipe through common electric arc welding. The communicating pipe air distribution grate comprises a blast inlet arc 90-degree elbow (1) with the circular cross section, an air distribution buffering pipe (2) with the rectangular cross section, an air distribution grate pipe (3) with the circular cross section, a secondary air buffering pipe (4) with the rectangular cross section, an air cap (5), a secondary air connector (6) and a horizontal air distribution small hole (7). A combustion improver is distributed in a hearth on the upper layer of ash in an equipressure mode through a grate inner cavity, air cushion flow for lifting fuel is formed, and a fluidized combustion effect is generated. Ash deposited on the grate separates the high-temperature fuel to protect the grate, the combustion improver blown by an air blower absorbs the heat of the grate portion and is heated while the grate is protected, and combustion efficiency of the boilers is improved.

Description

A kind of communicating pipe cloth wind furnace row

Technical field

A kind of communicating pipe cloth wind furnace row, belong to the Industrial Boiler field.

Background technology

Fire grate is the core component of boiler, play the double acting of carrying fuel and cloth wind, the retrieval relevant document finds that boiler grate has fixed bar shaped crack casting furnace grate, portable traveling-grate stoker, oscillatory type, reciprocating type etc., their air supply mode all is to enter from the fire grate bottom, enter boiler furnace by the fire grate crack, though the application of these fire grates is with a long history, reliable in structure, advantage such as stable, finds to have the following disadvantages in author's long practice: one; Air-flow passes through linearly cloth wind of fire grate crack, form straight line and disperse the anisobaric air-flow, stopped by fire grate and produce calm blind area, its two: the width of fire grate crack influences the combustion efficiency of fuel, the narrow oxygen-supplying amount deficiency of crack, it is not smooth to drain ashes, the wide thin buckwheat coal of crack is run away with coal ash whereabouts ashpit, cause waste, its three: air-flow enters combustion chamber on the fire grate by ashpit, the ashpit of disturbance simultaneously causes environmental pollution, its four: need in time clear ashes during boiler operatiopn, high-temperature fuel could be fully and air catalytic combustion, fire grate hot soak condition like this, shorten its service life, its five: complex structure also needs machine driving, and to its weak point, the present invention develops a kind of communicating pipe cloth wind furnace row in conjunction with the air distribution plate principle of CFBB.CFBB is experts and scholars' wide, state-of-the-art type of furnace of various performance parameters of efficient energy-saving and emission-reducing, fuel tolerance of generally acknowledging in the world, air distribution plate is the core component of CFBB, being transplanted to Industrial Boiler by the remodeling that develops gets on, not only avoid above-mentioned deficiency, also possessed every advantage of CFBB simultaneously.

Summary of the invention

The object of the invention is to overcome deficiency and the defective in the existing boiler grate technology, research and develop a kind of communicating pipe cloth wind furnace row according to the air distribution plate principle of CFBB, its air-flow enters the combustion chamber by connecting pipe, in burner hearth, form even air cushion, a large amount of air upwards lift and be wrapped in big and small solid fuel particle, make that its abundant after-flame is raised the efficiency, energy savings.

The present invention realizes by following technical approach, whole fire grate uses ordinary carbon steel to be welded, wherein wrap up the blast inlet pipe, air-flow buffering rectangular tube, the fire grate pipe, blast cap on the furnace grate tube, secondary wind buffering rectangular tube, the specific embodiment is as follows: the circular arc bend pipe that the air blast pipe is manufactured 90 degree, wide of other end, connection air blast air port welding air-flow buffering rectangular tube, the even welding fire grate pipe that distributes on the leptoprosopy perpendicular to air-flow buffering rectangular tube, leave wide suitable crack between the fire grate pipe, drain the usefulness of ashes, the other end of fire grate pipe and secondary wind separator tube join, uniform blast cap on the fire grate pipe, the horizontal cloth wind of branch apertures such as blast cap circumference, after air blast starts, air-flow enters the buffering rectangular tube along 90 degree circular arc bend pipes, and be full of each root furnace grate tube simultaneously and be covered with whole burner hearth by the blast cap horizontal apertures, also enter secondary wind buffering rectangular tube simultaneously, all be in isopiestic state in secondary wind and wind and the whole furnace grate tube.Air cushion stream is lifted in formation uniformly in the burner hearth; make the burning that fluctuates of the particle of fuel; its blast cap layout determines according to the burner hearth horizontal cross-section; spherical hearth can be adapted to and also rectangle furnace can be adapted to; but putting between blast cap and the blast cap can square also equilateral triangle; when the horizontal cloth wind of blast cap aperture during with the certain thickness ashes of deposit; play the effect of protection fire grate pipe; do not influence cloth wind combustibility in the burner hearth; the used combustion adjuvant of the present invention can be that air also can be air---the gaseous mixture of steam; when combustion adjuvant by whole communicating pipe inwall; fire grate is by cooling protection; also heated simultaneously combustion adjuvant and more be conducive to burning, as seen this fire grate is subjected to the double shielding of ashes and combustion adjuvant, and use carbon steel that therefore can be bold is welded; and do not make cylinder iron, simplify manufacturing process and reduced cost.

Description of drawings:

Fig. 1: facade structures schematic diagram

Fig. 2: A-A1 rectangle fire grate planar structure schematic diagram

The circular fire grate planar structure of Fig. 3: A-A2 schematic diagram

Figure: 4:B-B side structure schematic diagram

Further specify by reference to the accompanying drawings: as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the present invention includes cross section and be circular cloth wind furnace comb (3), secondary wind separator tube (4), blast cap (5), secondary wind joint (6), the horizontal cloth wind aperture (7) that cross section is rectangle for the blast inlet circular arc 90 degree bend pipes (1) of circle, cloth wind separator tube (2), the cross section that cross section is rectangle.The present invention's material ordinary carbon steel, the arc-welding of manufacturing process common electrical, with fire grate pipe and the uniform welding of 90 degree each other of air-flow buffering rectangular tube, secondary wind buffering rectangular tube and fire grate pipe other end be 90 degree welding each other, with blast cap be arranged in the burner hearth cross section geometry, can adapt to square burner hearth and also can adapt to spherical hearth, blast cap (5) is made with cored screw.What of the size of horizontal cloth wind aperture (7) diameter and quantity are the watt level of boiler determined.

Claims

One kind communicating pipe cloth wind furnace row, it is characterized in that cross section is that circular air intake 90 degree circular arc bend pipes (1), cloth wind separator tube (2), the cross section that cross section is rectangle are circular cloth wind furnace comb (3), the secondary wind separator tube (4) that cross section is rectangle, blast cap (5) and cloth wind aperture (7) weld with arc welding between each node.
2. according to cloth wind furnace row of described a kind of communicating pipe of claim 1, it is characterized in that cross section is that the cloth wind separator tube (2) of rectangle is parallel to secondary wind separator tube (4) that cross section is rectangle, parallel discharging cross section is circular wind-distributing pipe (3) and the mortar joint that unloads that stays equidistance between pipe (2) and pipe (4), pipe (3) is perpendicular to pipe (2) and manage (4).
3. According to claim 1 or 2 described a kind of communicating pipe cloth wind furnace row, it is characterized in that circular wind-distributing pipe (3) goes up vertically welding blast cap (5)Use hexagon hollow screw, Arranging between the blast cap (5) can be that isosceles triangle also can be square mode,Cloth wind aperture (7) is uniformly distributed along the circumference under wince, and hole diameter and uniform quantity are decided by boiler power.