CN1055049A - Multi-functional movable furnace arch for boiler - Google Patents

Abstract

A kind of boiler multifunction changable moving furnace arch, be suitable on the face arch of chain fire-gate boiler or industrial furnace, being provided with and specific rear arch, prop up arch or movable rear arch, prop up the mutually harmonious moving furnace arch device of arch, and these furnace arch devices have the arched door mechanism of simple and firm slip or rotation, twice aeration cooling or combustion-supporting mechanism, combustion space is increased, the chimney arch conveniently moving reaches and can not break because of coking, the movable position of boiler cove boiler cove is increased greatly, the pyrotechnics flow velocity can be controlled at 4 meter per seconds-30 meter per second than wide adjusting range, the completing combustion that adapts to more coals also can be economized on coal greatly, energy-conservation, and operation and safeguard also very convenient.

Description

Multi-functional movable furnace arch for boiler

The present invention relates to the chimney arch of boiler, especially be suitable for industry or life with traveling-grate stoker or adopt in the grate furnace of close principle moving furnace arch before and after the multifunctional adjustable.

The chimney arch of boiler has heat radiation and the mobile guide effect of flame.It can make burner hearth keep higher temperature, and helps lighting the coal seam and impel flammable volatile matter to mix the purpose that reaches burning with air.But the adaptability of effect of combustion and it is that shape and the structure with chimney arch has confidential relation.For example, in case after the stationary boiler chimney arch is built into, just can not change the coal that particular design is used, can not change the load of boiler again, certainly will exist the utilization rate of fuel low, operation inconvenience is burnt not saturating in these boilers and significant wastage that cause fuel to use with the reason fire coal.

For this reason, at the structural defective of said fixing formula boiler cove boiler cove, the inventor had once successively proposed to carry out improved two applications for a patent for invention at original boiler in 1988, wherein, application number be disclose among the CN88105468 part in the chimney arch is made movable, one or more levels moving furnace arch device of coordinating mutually with specific face arch or movable face arch especially is set on rear arch, this or these devices can be by changing the aperture between the chimney arch, reach and regulate the flame angle, combustion conditions and the heat radiation of controlling boiler and convection current situation etc. such as length, the thermal efficiency of boiler combustion is greatly improved and makes annual every saving coals from boiler reach 6-13%, have tangible economic benefit and energy-saving effect, the further improvement of activity being encircleed device on the basis of above-mentioned patent application is also disclosed in application number CN85105590, proposing the part chimney arch also can be in the mechanism of vertical direction lifting, the volume of boiler furnace is changed according to the burning needs, solved in the caused coking of situation lower part burner hearth of use fat coal and the control of having strengthened fire coal pyrotechnics flow velocity when burning.But, several moving furnace arch devices of being provided with on the boiler rear arch are only proposed in aforesaid patent application, also has its limitation the boiler of these numerous patterns in reality is used, aperture that moving furnace arch provided on the particularly former rear arch and position not enough, so pyrotechnics flow velocity control range is still narrow between chimney arch.In addition, moving furnace arch apparatus structure form is relatively more dull, and the manufacturing that has also bothers and can not bring into play the regulating action of preferable comprehensive burning.

Main purpose of the present invention is in order to overcome above-mentioned many disadvantages, and a kind of forward and backward moving furnace arch of multifunction changable of boiler is provided, and the harmonious moving furnace arch device of a kind of and specific rear arch or movable rear arch particularly is set on the face arch of boiler.

Another object of the present invention provide a kind of between front and back arches movably, not only can regulate face arch but also can regulate the moving type moving furnace arch device that rear arch opens and closes.

A further object of the present invention provides architecture advances such as an arch or an arch before and after the boiler activity and twice aeration is set, to improve coal-fired combustion conditions.

For achieving the above object, to among the present invention by the front and back chimney arch, in the traveling-grate stoker that drum, firebreak, feed hopper and coal lock air channel etc. are formed or the industrial furnace of siege, be provided with on described face arch and specific rear arch or the mutually harmonious moving furnace arch of the one-level at least device of movable rear arch, this device comprises that adjusting mouth on the face arch (arch mouthful) and is positioned to regulate and mouthful goes up and by opening and closing the movable arched door mechanism that adjustable size saves combustion conditions such as flame angle, length and controls boiler hot radiation and convection current.Adjusting mouth on the described face arch is along being provided with the gradient on the boiler longitudinal direction opposite face, and has an a pair of supporting base that is positioned near boiler setting, one described movable arched door mechanism is revolving, by fire-resistant arch bar be embedded in the arch bar one and hold to put on the shelf that pipe forms.Outside frame in arch bar is held pipe the part stretched out in, be shelved on the supporting base movably and can install at the one end and regulate mouthful cutting, the jack that open and close.

In preferable design, variable front and back of the present invention moving furnace arch can be arranged between face arch and the rear arch, and next directly is extended to the moving type moving furnace arch device of arch combustion conditions before and after the shared adjusting of rear arch from face arch.

In the design of the best, variable front and back of the present invention moving furnace arch is provided with stay pipe or frame and holds pipe and sound construction is provided and can realizes twice aeration or cooling in the movable arched door mechanism of forward and backward, hogging, and movable arched door mechanism is made assembly form and is convenient to control and transposing.

Because the multi-functional movable furnace arch of boiler of the present invention not only can be provided with on rear arch, but also can on face arch hogging, implement, the movable part of boiler cove boiler cove is increased greatly, thereby can be controlled in the 4 meter per seconds-30 meter per second scope the adjusting of the pyrotechnics flow velocity between each chimney arch.Like this, it makes boiler can help adapting to the completing combustion of more coals, for example when using fat coal and high load capacity, regulating variable active encircles to maximum and larger opening, control pyrotechnics is in low flow rates, when using the relatively poor and load of ature of coal hour promptly to regulate the variable active chimney arch to minimum and less aperture, control pyrotechnics is in high speed and moderate speed range.Impel pluralities of fuel when burning, to have enough heats and completing combustion in the short to the greatest extent time, thereby reach best economizing on coal or energy-conservation effect.

Below with reference to accompanying drawing the multi-functional front and back of boiler of the present invention moving furnace arch is explained in detail:

Fig. 1 represents the moving furnace arch device that the present invention is provided with on face arch, and the schematic diagram of the configuration that can combine with the moving furnace arch device on the rear arch;

Fig. 2 represents face arch of the present invention, an arch, the compages of rear arch and set moving furnace arch schematic representation of apparatus;

Fig. 3 be the A-A of Fig. 2 to view, an expression arch structure partly;

Fig. 4 be the B-B of Fig. 2 to view, the structure that the expression metal props up arch;

Fig. 5 be the C-C of Fig. 2 to view, represent the Arch Bar Structure of the movable arched door device of slidingtype partly;

Fig. 6 be the D-D of Fig. 2 to view, represent the Arch Bar Structure of rotary movable arched door device partly;

Fig. 7 represents the movable arched door schematic representation of apparatus of moving type of setting between the arch of front and back of the present invention;

Fig. 8 be the E-E of Fig. 7 to view, represent the polylith assembly unit Arch Bar Structure of portable movable arched door device partly;

Fig. 9 represents the partial schematic diagram of slidingtype moving furnace arch Unit Installation structure of the present invention.

See also Fig. 1, boiler multifunction changable moving furnace arch of the present invention is applicable to various Industrial Boilers, and generally these boilers are by boiler vessel 5, traveling-grate stoker or siege 8, firebreak 6, feed hopper airduct, coal lock (not drawing among the figure) and forward and backward arch 1,2 composition such as grade.Described variable active chimney arch comprises a rotary moving furnace arch device of offering on face arch 1, this device has an adjusting mouth that is arranged in face arch 1 (arch mouthful) 3 and and is installed in the movable arched door mechanism 4 that regulates mouthful.Movable in the present embodiment arched door mechanism 4 comprises that an arched door and a pair of being positioned at regulate mouthful two sides and near the supporting base on the boiler setting, one arch bar 7 and be embedded in more than one in the arch bar 7 and frame that arch bar is partly stretched out at its two is held pipe 9, described arched door mechanism 4 holds pipe 9 by frame and is shelved on the supporting base movably.And describedly regulate mouthfuls 3 and be generally rectangular and domatic 10 along being provided with on relative two walls of the longitudinal direction of boiler, but also can do squarely sometimes, oblique or circle etc. or on wall, can not establish domatic regulating mouth.The thorny train that can use by the routine that is installed on furnace wall and the arch bar 7 in the switching size degree of regulating movable arched door mechanism on mouthfuls 3 or other latch jack adjusting part are controlled or are regulated.In addition, moving furnace arch device on face arch of the present invention was except this paper introduced, in aforementioned two applications that propose of the applicant, movable arched door apparatus structure on those rear arches, activity assembly unit arch brick formula for example, slidingtype, the rotary and movable arched door mechanism that can change chimney arch aperture and size of burner hearth or volume by stage or elevating mechanism are equally applicable to the application of face arch.In a word, after offering the moving furnace arch device on the face arch, can increase the control of pyrotechnics in the anterior flow velocity size of boiler.

In Fig. 1, the moving furnace arch device that on face arch, is provided with, one-level or the above moving furnace arch device of one-level coordinated mutually with movable face arch also can be set on rear arch, among the figure secondary, in the rotary moving furnace arch device of one-level and the one-level slidingtype moving furnace arch device (relevant structure will describe in detail below).In the design and installation of these two devices, can not establish an arch in the rear arch.Like this, can increase moving furnace arch device on the rear arch greatly to the adjustable range of fired coal combustion operating mode with described device is structurally simplified.

Referring to Fig. 2 to Fig. 6, the front and back moving furnace arch can be made up of the moving furnace arch device on moving furnace arch device on the one-level face arch and the above rear arch of secondary in this embodiment.Wherein, one-level activity Shanghai arch device on the rear arch is contained between a fixing back arch 11 and the back tail arch 15, it adopts revolving, the adjusting mouth 14 of this device promptly is located between a back arch 11 and back tail and encircles 15, described movable arched door mechanism 12 comprises that an arch bar 20, is embedded in arch bar 20 and part is stretched out the arch bar two ends and can be held pipe 22 to the frame that arch bar sets aside on the described supporting base.Because the movable arched door mechanism among the present invention adopts frame to hold pipe and makes its designs simplification as the support member of arch bar.In addition, hold top or the bottom that pipe also can be arranged on described arch bar for this, in Fig. 2, respectively be provided with a frame and hold pipe 21 in the upper and lower, 23, frame is held pipe 21,23 can be in addition fixedly connected by the fixture that is provided with on the arch bar 34, and these settings of holding pipe also provide except playing fixation is convenient to moving and lifting arch bar.In addition, when burning needed, frame is held pipe also can be mounted to position-adjustable, so that changed according to operation and adjusting situation.The slidingtype moving furnace arch device that on the rear arch another grade moving furnace arch device also is provided with below a fixing back arch 11 and preceding arch 17, the movable arched door mechanism 15 of this device comprises the arch bar 16 of a curved arch, at least one 19, two or two pairs of curved arch stay pipe that are embedded in the arch bar is installed in tilting track 25 on 27 walls of air channel, boiler two wing furnace wall arch springing 26 below and two supporting arch bars 16 2 distolateral and middle Silel cast iron pin 28 or other high temperature resistant pin that can slippage on described tilting track respectively.The movable arched door of such slidingtype also can be arranged on the bottom or the front and back of comings and goings arched door device on the rear arch, and for example the prolongation of the movable arched door of slidingtype mechanism 15 by track can be arranged at side under the rotary moveable arched door mechanism 12 in Fig. 2.Simultaneously, the same with above-mentioned rotary arched door mechanism on the arch bar 16 of the movable arched door of slidingtype mechanism or below can arrange more than one or one with the similar stay pipe 18 of arch bar shape to support and to reinforce arch bar.The movable arched door arrangement of mechanism of slidingtype can be avoided as when the part coking appears in the arch bar internal face below a fixing rear arch or an arch, also unlikely breakage when being obstructed when the arch that slides is mobile.

In preferable design above-mentioned described various stay pipes and frame hold the pipe available hollow pipe do, they are communicated with airduct or blast main separately, can pass to refrigerating gas or fluid, for example air, steam or water cool off arch bar and parts on every side to increase the service life of these members or parts.In addition, these stay pipes and frame are held pipe and are gone up the boring bubbling air as twice aeration.In actual applications frame hold the pipe and the most handy resistant to elevated temperatures metal or alloy material of stay pipe do.In addition, the arch bar of above-mentioned slip or rotary movable arched door mechanism can be that monoblock is made, also can be by little arch bar more than 2 assembled removably (as shown in Figure 8), and this polylith assembly unit arch bar advantage is can partly change when damaging.Generally bigger with fritter assembly unit arch bar at the burner hearth that revolves stove formula activity arched door device, and can use the monoblock arch bar during less burner hearth.On the refractory material kind, preferably select excellent high-temperature refractory material or refractory for use.

Please continue to consult Fig. 2 and Fig. 3, if in boiler, have a hogging or an arch 17, for cooling off or promote the burning of fire coal to boiler component, described arch 17 can be made into fixing or slidingtype and add and put cooling duct 30, and this airduct 30 is drilled with more than one hole on wall, is provided with simultaneously overfiren air port 31 and is connected with hole on airduct 30 walls on a sidewall of arch.Described airduct 30 is connected with blast main usually.In design preferably overfiren air port 31 facing to face arch 1 below, send into the furnace flame district by air or fluid that blast main is sent here from overfiren air port, play combustion-supporting effect to face arch is coal-fired down.The slide mechanism that slidingtype props up arch is the same with slidingtype arched door mechanism mounting means.

As Fig. 2 and shown in Figure 4, prop up arch except building the system with refractory material, also available resistant to elevated temperatures difform metal tube or compo pipe are done, described metal tube props up arch 24, also can bore more than one aperture 32 on the pipe, refrigerating gas or fluid are gone in the road, also can be used as secondary wind during air in this way and play the adjusting combustion.In addition, because metal tube is little because of its cross section as when arch, thus can reduce the pyrotechnics resistance, and the lifting and the front and back that help movable arched door mechanism are regulated.

Consult Fig. 7 to Fig. 9, this is another embodiment of the present invention, the multifunction changable moving furnace arch of boiler is between the arch of front and back a moving type moving furnace arch device to be set in this example, the adjusting mouth of this device (arch mouth) 38 is positioned at the front end of face arch 1 bottom to rear arch 2, and the movable arched door mechanism 35 of device be can be in the described mouthful 38 moving types activity arched door mechanisms of sliding that regulate, it comprises the arch bar 16 of a curved arch, at least one curved arch stay pipe 19 that is embedded in the arch bar 16, and as shown in Figure 9 at least one pair of is placed in boiler two side arch springings respectively 26 times or wind path wall 27 on track 25 and two supporting arch bars 16 2 are distolateral and middle Silel cast iron pin 28 that can slippage on described track 25.In order to reinforce arch bar or described movable arched door mechanism slides freely, also one or an above stay pipe can be set in the upper and lower of arch bar 16, be to establish two stay pipes 36 in the arched door bottom in the present embodiment.Such moving furnace arch device has both two kinds of effects of movable face arch and rear arch.For example, before arch bar 16 slides to, become the part of face arch 1.At this moment face arch extends and forces down, and helps when the burning fat coal temperature under the face arch being reduced.After sliding to, become the part of rear arch 2.At this moment the rear arch lengthening is directed to fiery cigarette and forces forwards, helps burning of coal inferior.

In addition, arch bar 16 also can be assembled by little arch bar more than two 39 in the movable arched door of the moving type of this slip mechanism 35, and be dismountable, is convenient to install and change.If need further to regulate temperature in the combustion process, also can shed several little arch bars.

In addition, this moving type moving furnace arch device as the embodiment of Fig. 1 also can be rotary with one-level or the movable arch of slidingtype combine, enlarge the adjustable range of pyrotechnics flow velocity, adapt to the combustion requirements of more coals.

Claims (19)

1, a kind of multi-functional movable furnace arch for boiler, comprise by the front and back chimney arch, chain grate boiler or industrial furnace that boiler vessel, firebreak, feed hopper and coal lock etc. are formed, it is characterized in that on described face arch being provided with and specific rear arch or the mutually harmonious moving furnace arch of the one-level at least device of movable rear arch, this device comprises that one is opened in adjusting mouth and on the face arch and is positioned at the movable arched door mechanism that regulates combustion conditions such as mouthful going up and open and close by it adjustable size joint flame angle, length and control boiler hot radiation and convection current.

2, front and back according to claim 1 moving furnace arch, it is characterized in that adjusting mouth on the described face arch is domatic along being provided with on relative two walls of the longitudinal direction of boiler, movable arched door mechanism comprises that a pair of being positioned at regulate mouthful both sides and near the supporting base on the boiler setting on the described face arch, one arch bar and be embedded in more than one in the arch bar and the stay pipe of arch bar is partly stretched out at two, described arched door mechanism holds pipe by frame and is shelved on the supporting base movably.

3, front and back according to claim 2 moving furnace arch, the adjusting mouth that it is characterized in that the moving furnace arch device on the described rear arch is arranged between fixing back the arch and back tail arch, described movable arched door mechanism is a rotation arched door mechanism, it comprises an arch bar, and one is embedded in arch bar and part is stretched out the two ends of arch bar and can be held pipe to the frame that arch bar sets aside on the described supporting base.

4, front and back according to claim 3 moving furnace arch is characterized in that can being provided with in described arch bar upper and lower one or one and holds pipe to put on the shelf, and holding pipe for described can be mutually permanently connected by the fixture that is provided with on the arch bar.

5, front and back according to claim 4 moving furnace arch is characterized in that holding pipe for described can do the adjustable connection in position by the regulating part that is provided with on the arch bar.

6, front and back according to claim 5 moving furnace arch, it is characterized in that described arch bar by little arch bar more than 2 removably assembly unit constitute or constitute en bloc.

7, front and back according to claim 6 moving furnace arch, it is characterized in that moving furnace arch device on the described rear arch is the movable arched door mechanism that the slidingtype furnace arch device is set below back fixing arch and preceding arch, this mechanism comprises the arch bar of a curved arch, distolateral and the middle Silel cast iron pin that can slippage on described tilting track of tilting track at least one curved arch stay pipe that is embedded in the arch bar, the two pairs of wind path walls that are placed in boiler two wing furnace wall arch springings belows respectively and two supporting arch bars two.

8, the chimney arch of front and back activity according to claim 7 is characterized in that the movable arched door of described slidingtype mechanism also can be arranged on the bottom of the arched door device of comings and goings on the rear arch.

9, front and back according to claim 8 moving furnace arch, the curved arch arch bar that it is characterized in that the movable arched door of described slidingtype mechanism by little arch bar more than 2 removably and dress form.

10, front and back according to claim 9 moving furnace arch, but it is characterized in that described arch bar top, middle part or bottom fixed and arranged more than one or one with the similar stay pipe of arch bar shape.

11, front and back according to claim 10 moving furnace arch, the frame that it is characterized in that described movable arched door mechanism are held pipe and stay pipe for being hollow, and they are connected with airduct separately.

12, front and back according to claim 11 moving furnace arch is characterized in that holding in pipe and the stay pipe at described and can feed refrigerating gas or fluid, for example air, steam or water.

13, front and back according to claim 12 moving furnace arch is characterized in that described is held pipe and stay pipe is refractory metal or alloy material, and described arch bar is made by high temperature resistant refractory material or pottery.

14, according to claim 2 or 6 or 13 described front and back moving furnace arch, it is characterized in that to be provided with in the described rear arch arch that slides, be provided with cooling duct in described the arch, and be drilled with 2 above holes, the hole of being bored on an arch is provided with overfiren air port and described cooling duct on the sidewall is communicated with, and described cooling duct is connected with blast main.

15, front and back according to claim 14 moving furnace arch is characterized in that the arch hollow metal tube also can be set to be propped up arch and be drilled with 2 above apertures can introducing secondary wind on its tube wall between described arch and rear arch.

16, front and back according to claim 15 moving furnace arch is characterized in that described cooling duct and metal tube prop up arch and make by refractory metal or alloy.

17, a kind of multi-functional movable furnace arch for boiler, comprise by the front and back chimney arch, boiler vessel, firebreak, chain fire-gate boiler or industrial furnace that feed hopper and coal lock air channel etc. are formed, it is characterized in that being provided with between described face arch and the rear arch moving type moving furnace arch device, the adjusting mouth of described device is positioned at the front face that arrives rear arch under the part face arch, the movable arched door mechanism of described device is can be in described adjusting mouthful sliding transfer formula arched door mechanism, it comprises the arch bar of a curved arch, at least one curved arch stay pipe that is embedded in the arch bar, at least one pair of is placed on the boiler two side arch springings respectively or the track on the wind path wall and two supporting arch bars two are distolateral and middle Silel cast iron pin that can slippage on described track.

18, front and back according to claim 17 moving furnace arch, its feature is provided with one or an above stay pipe in the top or the bottom of described arch bar.

19, front and back according to claim 18 moving furnace arch, its feature is formed by dismountable little arch bar more than 2 and dress at described arch bar.

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