CN202272927U - Tempering furnace - Google Patents
Tempering furnace Download PDFInfo
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- CN202272927U CN202272927U CN2011203818663U CN201120381866U CN202272927U CN 202272927 U CN202272927 U CN 202272927U CN 2011203818663 U CN2011203818663 U CN 2011203818663U CN 201120381866 U CN201120381866 U CN 201120381866U CN 202272927 U CN202272927 U CN 202272927U
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Abstract
The utility model provides a tempering furnace capable of tempering at low, medium and high temperature. The tempering furnace is equipped with a plurality of burners, each burner is connected with an air conduit and a gas conduit, and each air conduit is provided with an air automatic valve and an air manual valve, wherein a hot air jet pipe is led out from a connector located between the air automatic valve and the air manual valve of the air conduit which is connected with each burner, each burner body is provided with a through hole crossing a furnace wall at the middle upper or middle lower part, a nozzle is installed at one end of each through hole and each hot air jet pipe is located at the other end of the corresponding through hole, and a hot air automatic valve is arranged between each hot air jet pipe and each nozzle. The utility model has the advantages of improving temperature uniformity of tempering at low temperature, improving heating efficiency, and reducing investment cost as tempering at medium-high temperature and low temperature can be carried out with one furnace.
Description
Technical field
The utility model relates to the heat treatment technics field, and specifically, the utility model relates to a kind of tempering stove that can realize low-temperaturetempering, average tempering and high tempering.
Background technology
Usually, the heat-treatment production line of 4300mm Wide and Thick Slab has three of quenching furnance, normalizing furnace and tempering stoves, is generally roller hearth furnace.Quenching furnance and normalizing furnace adopt the radiator tube indirect heating, the band protective atmosphere.Tempering stove adopts the naked light heating, and interchanger is concentrated preheated-combustion-supporting wind.In general, tempering mode has these three kinds of modes of low-temperaturetempering, average tempering and high tempering.Yet, how in a tempering stove, to realize high temperature, these three kinds of tempering process of middle gentle low temperature, and heating quality can both reach requirement, also there is not the report of this respect at present.Be that a middle high tempering stove of construction and a middle low-temperaturetempering stove come to realize respectively low-temperaturetempering, average tempering and high tempering generally speaking.But middle low-temperaturetempering stove is because temperature is very low, and heat transfer type is by being that main changing into transmission of heat by convection is main with the radiative transfer; Therefore, if adopt the tempering mode of traditional tempering stove, then heating efficiency is low; Temperature homogeneity is difficult to reach assurance, can not develop high-precision end product.
It is reported that the U.S. has producer to adopt the mode that recirculation blower is set in tempering stove,, make temperature field in furnace even, thereby improve temperature homogeneity and improve the low-temperaturetempering level to increase the gas stream in the stove disturbance.Yet aforesaid way exists that facility investment is big, in the stove convection current can not evenly control, the unsettled shortcoming of temperature homogeneity, can not realize that low temperature and High Temperature Furnaces Heating Apparatus share.
Along with the exploitation of high-end products such as wear resisting steel, engineering machinery, the sheet material that the low-temperaturetempering after need quenching is handled (generally between 150 ℃～250 ℃) gets more and more.How the steel plate temperature difference is controlled at ± 5 ℃ in, the low-temperaturetempering stove is had higher requirement.
The utility model content
In order to solve the problems referred to above that exist in the prior art, the utility model provides a kind of tempering stove that can realize low-temperaturetempering, average tempering and high tempering.
The utility model provides a kind of tempering stove; Said tempering stove is furnished with a plurality of burners, and each burner is connected with gas line with air line, and air line is provided with air self-acting valve and air manual valve; Wherein, Draw the spray hot wind pipe from the air self-acting valve of the air line that is connected with burner and the interface between the air manual valve, in the side on the upper side of the burner body of each burner or on the lower side the side is provided with the through hole that passes furnace wall, and splash head is arranged on an end of through hole; The spray hot wind pipe is arranged on the other end of through hole, is provided with the hot blast self-acting valve between spray hot wind pipe and the splash head.
According to the utility model, the head of splash head is tapered, and the other end of splash head is connected with the hot-wind inlet of spray hot wind pipe through flange.
According to the utility model, for the top burner of said tempering stove, splash head is positioned at inclined to one side 40 °～50 ° position, top of the burner body of top burner.For the bottom burner of said tempering stove, splash head is positioned at inclined to one side 40 °～50 ° position, bottom of the burner body of bottom burner.
According to the utility model, splash head is sealed by encapsulating material.
According to the utility model; Through with the air ejection in the burner hot air duct in stove, strengthen the gas stream in the stove disturbance, realized realizing in the middle high tempering stove function of low-temperaturetempering; Improved temperature homogeneity; Thereby overcome in the conventional tempering heat treatment, the defective of Senior Three kind technological temperature has solved the problem of poor temperature uniformity in the low-temperaturetempering in can not on same seat stove, realizing hanging down.
According to the utility model, through increase splash head through burner to the furnace injection preheated air, improved the temperature homogeneity of low-temperaturetempering greatly, improve heating efficiency, and high temperature and low-temperaturetempering can carry out on a stove fully, reduced cost of investment.
Description of drawings
Through the description of carrying out below in conjunction with accompanying drawing, the feature and advantage of the utility model will become apparent, wherein:
Fig. 1 shows according to the top burner of the tempering stove of the utility model embodiment and the structural representation of splash head;
Fig. 2 shows according to the bottom burner of the tempering stove of the utility model embodiment and the structural representation of splash head;
Fig. 3 shows the arrangement synoptic diagram according to the splash head of the utility model embodiment;
Fig. 4 shows according to the injection wind of the utility model embodiment and the steering logic figure between the burner.
[label declaration]
The 1-gas inlet; 2-air manual valve; 3-spray tube interface; 4-hot blast self-acting valve; 5-air self-acting valve; The 6-splash head; The 7-burner body; The 8-gas entry; 9-coal gas manual valve; The 10-differential pressure valve; The 11-PLC system; The 12-burner controller; The 13-hot-wind inlet; 14-furnace wall steel plate; The 15-refractory fibre; 16-furnace wall refractory materials; The 17-flange; 18-spray hot wind pipe.
Embodiment
To exemplary embodiment be described more fully with reference to accompanying drawing hereinafter, exemplary embodiment shown in the drawings.As those skilled in the art will recognize that, under the situation of spirit that does not all break away from the utility model or scope, can revise described embodiment with various mode.Accompanying drawing is considered to illustrative and nonrestrictive in fact with describing.In the accompanying drawings, identical label is represented components identical all the time.In the accompanying drawings, for the purpose of description and knowing, exaggerative, as to omit or schematically show each structure size and size.
In order in a tempering stove, to realize low-temperaturetempering, average tempering and high tempering simultaneously, the utility model centering high tempering stove improves.Specifically, the tempering stove that the utility model adopts is a high tempering stove in the spacious flame formula thermal treatment, and metallic recuperator is concentrated preheating of air.Through with the air ejection in the burner hot air duct in tempering stove, strengthen the flow perturbation in the tempering stove, thereby can in a tempering stove, realize the function of low-temperaturetempering, average tempering and high tempering simultaneously.
To combine accompanying drawing to describe improved middle high tempering stove in detail below according to the utility model.
Fig. 1 shows according to the top burner of the tempering stove of the utility model embodiment and the structural representation of splash head.Fig. 2 shows according to the bottom burner of the tempering stove of the utility model embodiment and the structural representation of splash head.Fig. 3 shows the arrangement synoptic diagram according to the splash head of the utility model embodiment.Fig. 4 shows according to the injection wind of the utility model embodiment and the steering logic figure between the burner.
Specifically, spacious flame formula tempering heat treatment stove and accessory has air heat exchanger, and is furnished with a plurality of (for example, 112) pulsed burner of heat supply up and down.Each burner is connected with gas line with air line, and wherein, air line and gas line are provided with self-acting valve and manual valve respectively, are used for controlling the amount of institute's air supplied and coal gas.It should be appreciated by those skilled in the art that opening the burner quantity of arranging in the flame formula tempering heat treatment stove and using can confirm according to actual needs.Usually, spacious flame formula tempering heat treatment stove utilizes convection type to realize low-temperaturetempering, but since during low temperature the flow pattern of gas stream in the stove limited, do not take to strengthen convection current and be difficult to realize low-temperaturetempering.
With reference to Fig. 4, according to the utility model, between the air manual valve 2 of the air line of each burner of spacious flame formula tempering stove and air self-acting valve 5, draw a pipeline, that is, spray hot wind pipe 18 (as depicted in figs. 1 and 2) is used for spraying hot blast.Self-acting valve 4 is set one on the spray hot wind pipe 18 of drawing, is used for controlling the amount of spray hot wind pipe 18 to the furnace injection hot blast.Be provided with the through hole (not shown) that leads in the stove the square on the upper side or square on the lower side of burner body 7, and a pipeline is set in the furnace wall hole of correspondence, wherein, the head of pipeline is tapered, as splash head 6.One end of splash head 6 is used for spraying hot blast, and the other end of splash head 6 is connected through the hot-wind inlet 13 of flange 17 (see figure 3)s with the spray hot wind pipe 18 of drawing from air line.Here, hot blast comes from the hot blast that provides through air line through air manual valve 2 from gas inlet 1 through the interchanger preheating.
In Fig. 4, just schematically show according to the improvement of the utility model to the nozzle structure of tempering stove, this improvement can be applied to all burners of tempering stove.To combine Fig. 1 to Fig. 3 to describe burner up and down and the structure of splash head of the tempering stove of the utility model below.
Fig. 1 shows the top burner of tempering stove and the structure of splash head.With reference to Fig. 1, in the high tempering stove, the gas inlet 1 of top burner is positioned at the top of burner body 7 in according to the spacious flame formula of the utility model, and gas entry 8 is connected with burner body 7 levels.Air manual valve 2 is arranged on the pipeline that is connected gas inlet 1 and burner body 7 with air self-acting valve 5, is used for controlling the amount that feeds the air (hot blast) in the burner body 7.According to the utility model; Air manual valve 2 is connected to spray tube interface 3 with air self-acting valve 5; And in spray tube interface 3, be provided with the opening (not shown); Spray hot wind pipe 18 is outwards drawn from the air manual valve 2 of burner and the opening of the spray tube interface 3 between the air self-acting valve 5, and is connected to splash head 6.Position spraying wind interface 3 seals welding, so that sealing each other between air self-acting valve 2, air manual valve and the hot blast self-acting valve 4.
According to the utility model, the burner body 7 that splash head 6 is arranged on the top burner is the position of 45 on the upper side.Specifically, splash head 6 is positioned at the top of the burner body 7 of top burner, and the center of splash head 6 becomes 45 ° ± 5 ° angles with the line of centres of burner body 7 with the horizontal axis of burner body 7.In the utility model; Consider distance and the height of burner hearth and the design factor between burner and the spray tube of spray tube and steel plate, the angle between the horizontal axis of the line of centres of the center of splash head 6 and burner body 7 and burner body 7 is controlled at 40 °～50 °.
As shown in Figure 3, hot-wind inlet 13 is connected with splash head 6 through flange 17.For the top burner of tempering stove, the furnace wall steel plate 14 of position, inclined to one side 45 ° ± 5 ° of angles, the top of burner body 7 is provided with the through hole (not shown), and through hole penetrates burner hearth, and wherein, the degree of depth of through hole in burner hearth is the thickness of furnace wall refractory materials 16.Splash head 6 is arranged on an end of through hole and is sealed by encapsulating material 15, thus splash head 6 and 16 insulation of furnace wall refractory materials.According to an embodiment of the utility model, encapsulating material 15 can be a tapetum fibrosum; Yet the utility model is not limited thereto.Need not weld between splash head 6 and the furnace wall steel plate 14, but utilize encapsulating material 15 closely to invest furnace wall refractory materials 16, so that splash head 6 freely expands.The end that splash head 6 puts in the burner hearth is tapered, to increase flow velocity.One end of tapered splash head 6 is used for spraying hot blast, and the other end passes through hole and is connected through flange 17 with spray hot wind pipe 18.Hot blast self-acting valve 4 is arranged between flange 17 and the spray tube interface 3, is used for controlling the amount of spraying wind and spraying wind that whether provides.
According to the utility model, the bottom burner of tempering stove and the position of top burner be symmetry up and down, therefore, for for simplicity, has omitted the description to same section.
Fig. 2 shows according to the bottom burner of the tempering stove of the utility model and the structural representation of splash head.With reference to Fig. 2, the air feed system of bottom burner (gas inlet 1, air self-acting valve 2 and air self-acting valve 5) is arranged on the bottom of burner, and gas entry 8, coal gas manual valve 9 and differential pressure valve 10 are arranged on the top of burner.Different with the position of the splash head 6 that is provided with for the top burner among Fig. 1, be arranged on the position at 45 ° on the lower side ± 5 ° of angles of burner body 7 for the splash head 6 of bottom burner setting.Specifically, splash head 6 is positioned at the bottom of burner body 7, and the center of splash head 6 becomes 45 ° ± 5 ° angles with the line of centres of burner body 7 with the horizontal axis of burner body 7.
According to the utility model, each burner of centering high tempering stove all is provided with splash head, and the position of splash head is different and different according to the position of burner.Specifically; Top burner for tempering stove; Splash head is arranged on the position at inclined to one side 45 ° ± 5 ° of angles, top of the burner body of top burner, and for the bottom burner of tempering stove, and splash head is arranged on the position at inclined to one side 45 ° ± 5 ° of angles, bottom of the burner body of bottom burner.Each burner through centering high tempering stove is provided with splash head; Splash head 6 under the control of hot blast self-acting valve 4 in tempering stove jet preheat air (hot blast); Intensification of Convection Heat Transfer in tempering stove, producing rough air, thereby makes the temperature in the tempering stove even; Heating efficiency can be improved, therefore tempering can be carried out at low temperatures.
According to the utility model, for satisfying the requirement of the temperature homogeneity of stove under the low temperature,, realized low-temperaturetempering through near each burner, setting up to the furnace injection preheated air to reach strengthening flow turbulent purpose.That is to say, on all burners of tempering stove, all be provided with in addition and be used for spraying hot blast as the launching site (that is splash head) that in stove, produces rough air.Because the spray hot wind pipe 18 of each burner is provided with automatically controlled valve (label 4), the switch signal of automatically controlled valve is delivered to the burner system, thereby controls air quantity and the wind speed that sprays wind flexibly through PLC (programmable logic controller) system 11.Therefore, improved temperature homogeneity, improved heating efficiency, can Senior Three kind tempering process in hanging down have been realized at same seat stove according to the tempering stove of the utility model.
To combine Fig. 4 that the concrete operations according to the injection wind system of the tempering stove of the utility model are described below.
With reference to Fig. 4, the PLC system 11 of computingmachine opens when being lower than a certain design temperature and sprays the fetch preface automatically according to the technological temperature requirement; When being higher than a certain design temperature, hot blast self-acting valve 4 is in closing condition.Whether air self-acting valve 5, differential pressure valve 10, hot blast self-acting valve 4 and information such as burner flame detection signal and furnace temperature are all imported in the burner controller, open through calculating back decision injection wind.In the time will carrying out low-temperaturetempering, burner does not burn, and in this case, opens the injection wind system of burner.Specifically, when needs carried out low-temperaturetempering, air self-acting valve 5 was in closing condition to stop to supply air and coal gas automatically with differential pressure valve 10; And air manual valve 2 is in open mode with the supply hot blast with hot blast self-acting valve 4; At this moment, to air line, feed hot blast from gas inlet 1, hot blast gets into splash head 6 through spray tube interface 3 and spray hot wind pipe 18 then; Thereby to tempering furnace injection hot blast, handle thereby can carry out low-temperaturetempering through splash head 6.
Therefore, according to the utility model, through advancing preheated air to furnace injection; Strengthened the flow perturbation in the stove; Be hot blast because of what be blown into again, temperature field in furnace is more stable, has improved temperature homogeneity; Overcome the problem of temperature of low-oven lack of homogeneity, thereby realized the function that low middle high tempering can be realized at a stove.
Above-mentioned is to the illustrating of the embodiment of the utility model, and is not interpreted as the restriction to the embodiment of the utility model.Though described the certain exemplary embodiment of the utility model, art technology should be understood easily, does not break away from itself under the situation of novel teachings and advantage of the utility model, can carry out many modifications to exemplary embodiment.Therefore, intention is included in all such modifications in the scope of the utility model that limits like claim.
Claims (5)
1. tempering stove; Said tempering stove is furnished with a plurality of burners; Each burner is connected with gas line with air line, and air line is provided with air self-acting valve and air manual valve, it is characterized in that drawing the spray hot wind pipe from the air self-acting valve of the air line that is connected with burner and the interface between the air manual valve; In the side on the upper side of the burner body of each burner or on the lower side the side is provided with the through hole that passes furnace wall; Splash head is arranged on an end of through hole, and the spray hot wind pipe is arranged on the other end of through hole, is provided with the hot blast self-acting valve between spray hot wind pipe and the splash head.
2. tempering stove as claimed in claim 1 is characterized in that the head of splash head is tapered, and an end of splash head is connected with the hot-wind inlet of spray hot wind pipe through flange.
3. tempering stove as claimed in claim 1 is characterized in that the top burner for said tempering stove, and splash head is positioned at inclined to one side 40 °～50 ° position, top of the burner body of top burner.
4. tempering stove as claimed in claim 1 is characterized in that the bottom burner for said tempering stove, and splash head is positioned at inclined to one side 40 °～50 ° position, bottom of the burner body of bottom burner.
5. tempering stove as claimed in claim 4 is characterized in that splash head sealed by encapsulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818663U CN202272927U (en) | 2011-10-10 | 2011-10-10 | Tempering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203818663U CN202272927U (en) | 2011-10-10 | 2011-10-10 | Tempering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202272927U true CN202272927U (en) | 2012-06-13 |
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ID=46193297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203818663U Expired - Fee Related CN202272927U (en) | 2011-10-10 | 2011-10-10 | Tempering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202272927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916323A (en) * | 2017-08-30 | 2018-04-17 | 湖南科技大学 | A kind of pipe-line system of tempering furnace burner |
-
2011
- 2011-10-10 CN CN2011203818663U patent/CN202272927U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916323A (en) * | 2017-08-30 | 2018-04-17 | 湖南科技大学 | A kind of pipe-line system of tempering furnace burner |
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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 |
Granted publication date: 20120613 Termination date: 20151010 |
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| EXPY | Termination of patent right or utility model |