CN101806538B

CN101806538B - High temperature trolley type heating furnace

Info

Publication number: CN101806538B
Application number: CN200910025028XA
Authority: CN
Inventors: 杨思安; 黄泰康; 李中华; 李发明; 崔扬
Original assignee: Yangzhou Metallurgical Machinery Co Ltd
Current assignee: Yangzhou Metallurgical Machinery Co Ltd
Priority date: 2009-02-17
Filing date: 2009-02-17
Publication date: 2012-11-28
Anticipated expiration: 2029-02-17
Also published as: CN101806538A

Abstract

The invention discloses a high temperature trolley type heating furnace, which relates to improvement of a high temperature trolley type heating furnace structure, and comprises a hearth, a furnace door, a furnace door frame, a trolley, an ignition controller, a labyrinth device, an autoignition heat accumulating type combustion device and a self-circulation evaporation cooling furnace door frame device, wherein the trolley can get in and out of the hearth; the labyrinth device is used for side seal between the trolley and the hearth, and comprises a roundabout labyrinth channel, an upper sand seal device and a lower sand seal device, wherein the roundabout labyrinth channel is arranged at the upper part of the cross section of the moving corresponding surfaces of the trolley side surface and the hearth side wall; the upper sand seal device is arranged at the middle part; the lower sand seal device is arranged at the lower part; in the horizontal direction, the distance from the upper sand seal device to the center of the trolley is longer than the distance from the lower sand seal device to the center of the trolley; and the self-circulation evaporation cooling furnace door frame device comprises a steam drum device, a combined type furnace door frame, a down pipe and a ascending pipe. The invention has the advantages that by utilizing the high-power heat accumulating type and zoning combustion control technology, the furnace temperature can be quickly heated to be higher than 1300 DEG C, the flue gas afterheat can be fully utilized, and the furnace thermal efficiency and the production rate can be improved.

Description

A kind of high temperature trolley type heating furnace

Technical field

The present invention relates to the high temperature trolley type heating furnace device of major diameter alloy garden steel (steel pipe), relate in particular to the improvement of high temperature trolley type heating furnace structure.

Background technology

At present domestic low to high temperature trolley type heating furnace ubiquity intensity of hearth, use a large amount of noble metal heat resisting steel, sealing effectiveness difference or shortcomings such as seal structure complex is fragile, the distortion of firedoor frame easy burn-out, the thermal efficiency is low, the life-span is low.

State Intellectual Property Office's application number is " 200520025733.7 ", and name is called the patented technology of " car type furnace sand seal device ", for improving the side seal effect, has proposed a kind of sand seal device of double containment.It comprises ring-shaped sand sealing groove, double-deck sand sealing knife, and the labyrinth type double-layer sealing structure that constitutes through ring-shaped sand sealing groove and double-deck sand sealing knife improves the effect of sealing, thereby overcomes the too high problem of pallet bottom temperature.But in this patented technology, air line distance is very short between pallet bottom and the burner hearth, in above-mentioned short distance, only utilizes the sand sealing knife of pair of parallel to be difficult to form bigger temperature reduction gradient at burner hearth and pallet bottom.Be difficult to overcome the low technical problem of intensity of hearth.In addition, problems such as in high-temperature operation, firedoor frame is yielding, cost height do not have effective solution yet in the prior art.

Summary of the invention

The present invention is directed to above technical problem, a kind of efficient height, low, the high life of cost are provided, be specially adapted to the high temperature trolley type heating furnace of major diameter alloy garden steel (steel pipe) heating.

The technical scheme of patent of the present invention is: comprise burner hearth, fire door, firedoor frame, the chassis that can pass in and out burner hearth and ignition controller, it also comprises the labyrinth device that is used for side seal between chassis and the burner hearth, heat accumulating burner capable and the self-loopa vaporization cool furnace doorframe device of lighting a fire automatically; Described labyrinth device is included in chassis side and burner hearth sidewall the move circuitous shape labyrinth channel on obverse cross section top, the last sand seal device at middle part and the following sand seal device of bottom; In the horizontal direction, last sand seal device apart from the distance at chassis center greater than sand seal device down apart from the distance at chassis center; Described automatic igniting heat accumulating burner capable comprises heat accumulating type heater and igniter burner, and igniter burner is arranged on the burner hearth backing, and the heat accumulating type heater is arranged on the hearth biside wall, and the port of igniter burner omits the end in the outlet of heat accumulating type heater; Igniter burner is connected ignition controller respectively with the heat accumulating type heater; Described self-loopa vaporization cool furnace doorframe device comprises drum device, combined type firedoor frame, down-comer and tedge; The drum device is provided with hot gas inlet and cold air outlet, and the drum device places atmosphere outside; The combined type firedoor frame comprises condensation import, heat radiation outlet, and down-comer connects drum device and condensation import, and tedge connects drum device and heat radiation outlet.

On chassis, be provided with some prefabricated backing straps, described prefabricated backing strap is provided with the concave arc groove that is 90 ° of intersections each other, and some prefabricated backing straps are in array-like arrangement.

The described sand seal device of going up comprises sand sealing knife, goes up sand sealing groove; Described sand seal device down comprises sand sealing knife, following sand sealing groove down; Last sand sealing knife, following sand sealing knife are fixedly connected on the chassis side respectively; Last sand sealing groove, following sand sealing groove are fixedly connected on the burner hearth sidewall respectively.

Advantage of the present invention is: adopt high-power heat accumulating type and subregion combustion control technology, can furnace temperature be heated rapidly to more than 1300 degree, can make full use of fume afterheat again, improve furnace thermal efficiency and productivity ratio; Igniter burner adopts electronic ignition device, can realize igniting control automatically during switching-over.The dual measure of labyrinth structure and double-deck sand seal structure is adopted in side seal, labyrinth structure increased hot furnace gas stroke and with the heat exchange area of furnace side refractory material, make the furnace side form a thermograde, reduced the operating temperature of chassis frame and sand sealing groove (cutter); Double-deck sand seal structure can guarantee that then furnace gas seals tight nothing and leaks; Side seal is simple in structure, does not need extra power set, has improved the reliability of sealing; The chassis frame reaches goes up sand sealing groove (cutter) because operating temperature is lower; Do not use expensive high-temperature heat-resistance steel; Only adopt the heat resisting steel of the lower anti-middle high temperature of price; Following sand sealing groove (cutter) is common heat-resisting cast iron, and backing strap is a high strength arc prefabricated component, when not influencing stove service life, greatly reduces the stove manufacturing cost.Because of the orthogonal arc-shaped slot on the backing strap; Can the row of indulging or the flexible cloth of horizontally-arranged according to major diameter alloy garden steel (steel pipe) Workpiece length; Because of backing strap becomes array distribution on the chassis face, there is big gap to help air current flow and heat exchange in the burner hearth between the backing strap, improved the stove efficiency of heating surface; And prefabricated component is changed when damaging easily, and is easy to maintenance and maintenance cost is low.The firedoor frame structure adopts self-loopa vaporization cooling structure, prevents that firedoor frame receives high temperature deformation, make contact between fire door and the firedoor frame tight; Prevent the fire door runout; Improved the stove high temperature service life, drum is recovered steam automatically, needn't worry to cut off the water, having a power failure burns out firedoor frame; Its energy-conservation and water-saving benefit be remarkable, also saved facilities such as the required cooling tower of water-cooled, accident water tower.Good seal of the present invention, efficient are high, cost is low, the life-span is long.

Description of drawings

Fig. 1 is the structural representation of body of heater of the present invention

1 is the heat accumulating type heater among the figure, the 2nd, and igniter burner, the 3rd, burner hearth sidewall, the 4th, last sand sealing groove, the 5th, following sand sealing groove, the 6th, following sand sealing knife, the 7th, last sand sealing knife, the 8th, chassis frame, the 9th, chassis, the 10th, prefabricated backing strap.

Fig. 2 is the vertical view of Fig. 1

Fig. 3 is the structural representation of firedoor frame apparatus for vapour-cooling of the present invention

11 is drums among the figure, the 12nd, and firedoor frame, the 13rd, down-comer, the 14th, tedge.

The specific embodiment

The present invention is shown in Fig. 1-3; Comprise burner hearth, fire door, firedoor frame 12, can pass in and out the chassis 9 and the ignition controller of burner hearth, it also comprises the labyrinth device that is used for side seal between chassis 9 and the burner hearth, heat accumulating burner capable and the self-loopa vaporization cool furnace doorframe device of lighting a fire automatically.On chassis 9, be provided with some prefabricated backing straps 10, prefabricated backing strap 10 is provided with the concave arc groove that is 90 ° of intersections each other, and some prefabricated backing straps 10 are in array-like arrangement.

The labyrinth device is included in circuitous shape labyrinth channel, the last sand seal device at middle part and the following sand seal device of bottom on chassis 9 sides and the obverse cross section of burner hearth sidewall 3 motions top; In the horizontal direction, last sand seal device apart from the distance at chassis center greater than sand seal device down apart from the distance at chassis center; Last sand seal device comprises sand sealing knife 7, goes up sand sealing groove 4; Following sand seal device comprises sand sealing knife 6, following sand sealing groove 5 down; Last sand sealing knife 7, sand sealing knife 6 is fixedly connected on chassis 9 sides respectively down; Last sand sealing groove 4, sand sealing groove 5 is fixedly connected on respectively on the burner hearth sidewall 3 down.

Automatically the igniting heat accumulating burner capable comprises heat accumulating type heater 1 and igniter burner 2, and igniter burner 2 is arranged on the burner hearth backing, and heat accumulating type heater 2 is arranged on the hearth biside wall, and the port of igniter burner 2 omits the end in the outlet of heat accumulating type heater 1; Igniter burner 2 is connected ignition controller respectively with heat accumulating type heater 1.

Self-loopa vaporization cool furnace doorframe device comprises drum device 11, knockdown firedoor frame 12, down-comer 13 and tedge 14; Drum device 11 is provided with hot gas inlet and cold air outlet, and drum device 11 places atmosphere outside; Knockdown firedoor frame 12 comprises condensation import, heat radiation outlet, and down-comer 13 connects drum device 11 and condensation import, and tedge 14 connects drum device 11 and heat radiation outlet.

Following further explain the present invention.

Combustion system of the present invention mainly is made up of the high-power heat-accumulating burner in the body of heater both sides in a symmetrical arrangement (being heat accumulating type heater 2); Igniter burner 2 is positioned at stove tail wall; Adopt long-flame burners; According to the distance of first heat-accumulating burner of stove tail to igniter burner; As igniter burner, slightly two igniter burners use the automatic igniting of electronic ignition device to light each heat-accumulating burner of both sides according to this to the port of igniter burner to the design length of flame in the gas exit of heat-accumulating burner at the end greater than the long-flame burners of above-mentioned distance.

Chassis frame 8, last sand sealing knife 7, last sand sealing groove 4, following sand sealing knife 6 and following sand sealing groove 5 segmentation respectively are cast as the structure that contains dilatation joint; Go up (descending) joint, sand sealing knife two ends and also make concaveconvex shape; To prevent the gas leakage of sand sealing knife joint; To go up (descending) sand sealing groove and be fixed on wall bottom, furnace side through weld bolt; With chassis frame 8 through on the panel that is bolted to chassis 9; Go up (descending) sand sealing knife and then be fixed on chassis 9 both sides, the low cement deposit material (mark 3 indication positions among Fig. 1) of furnace wall both sides and the pours (position of mark 9 indications among Fig. 1) of chassis both sides are watered the concaveconvex shape that coincide each other through template, just constituted the S shape labyrinth seal of top, furnace side and the double-deck sand seal structure of below, furnace side.Backing strap 10 on the chassis face adopts the high strength refractory material prefabricated component; Can be prefabricated into different shape separately; Orthogonal two arc-shaped slots are processed on the surface that this example contacts with workpiece, can indulge arrange long material or the short material of horizontally-arranged cloth, several row slotted eyes of prefabricated three rows on the chassis face; Backing strap just is placed in the slotted eye, need not the high-temperature refractory steel backing strap.

Form self-loopa vaporization cooling structure by drum device 11, combined type firedoor frame 12 and pipeline among Fig. 3; Cooling water is got into through down-comer 13 by drum and is embedded in the pipeline in firedoor frame 12 refractory materials; The vaporization of being heated gets into drum drum device 11 along tedge 14; Drum device 11 and the automatic heat exchange of atmosphere, steam cooled Cheng Shui, so self-loopa can cool furnace doorframe 12.

Claims

1. high temperature trolley type heating furnace; Comprise burner hearth, fire door, firedoor frame, the chassis that can pass in and out burner hearth and ignition controller; It is characterized in that it also comprises the labyrinth device that is used for side seal between chassis and the burner hearth, heat accumulating burner capable and the self-loopa vaporization cool furnace doorframe device of lighting a fire automatically; Described labyrinth device is included in chassis side and burner hearth sidewall the move circuitous shape labyrinth channel on obverse cross section top, the last sand seal device at middle part and the following sand seal device of bottom; In the horizontal direction, last sand seal device apart from the distance at chassis center greater than sand seal device down apart from the distance at chassis center; Described automatic igniting heat accumulating burner capable comprises heat accumulating type heater and igniter burner, and igniter burner is arranged on the burner hearth backing, and the heat accumulating type heater is arranged on the hearth biside wall, and the port of igniter burner is a little less than the outlet of heat accumulating type heater; Igniter burner is connected ignition controller respectively with the heat accumulating type heater; Described self-loopa vaporization cool furnace doorframe device comprises drum device, combined type firedoor frame, down-comer and tedge; The drum device is provided with hot gas inlet and cold air outlet, and the drum device places atmosphere outside; The combined type firedoor frame comprises condensation import, heat radiation outlet, and down-comer connects drum device and condensation import, and tedge connects drum device and heat radiation outlet.

2. a kind of high temperature trolley type heating furnace according to claim 1 is characterized in that, on chassis, is provided with some prefabricated backing straps, and described prefabricated backing strap is provided with the concave arc groove that is 90 ° of intersections each other, and some prefabricated backing straps are in array-like arrangement.

3. a kind of high temperature trolley type heating furnace according to claim 1 and 2 is characterized in that, the described sand seal device of going up comprises sand sealing knife, goes up sand sealing groove; Described sand seal device down comprises sand sealing knife, following sand sealing groove down; Last sand sealing knife, following sand sealing knife are fixedly connected on the chassis side respectively; Last sand sealing groove, following sand sealing groove are fixedly connected on the burner hearth sidewall respectively.