CN102399964B - Steel pipe normalizing furnace - Google Patents
Steel pipe normalizing furnace Download PDFInfo
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- CN102399964B CN102399964B CN201110385736A CN201110385736A CN102399964B CN 102399964 B CN102399964 B CN 102399964B CN 201110385736 A CN201110385736 A CN 201110385736A CN 201110385736 A CN201110385736 A CN 201110385736A CN 102399964 B CN102399964 B CN 102399964B
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Abstract
The invention relates to a steel pipe normalizing furnace, which belongs to the technical field of metal pipe processing kilns and comprises a furnace body of an open flame continuous heat treatment furnace, wherein one end of a furnace hearth of the furnace body of the open flame continuous heat treatment furnace is a burning heating heat insulation region with a smoke discharge opening, the other end of the furnace hearth is a cooling region, and the burning heating heat insulation region and the cooling region are communicated through a narrow neck passage. The steel pipe normalizing furnace is characterized in that a preheating air heat exchange mechanism used for pre-heat-exchange purposes on high-temperature smoke gas from the smoke discharge opening is matched and connected onto the smoke discharge opening, a cooling smoke gas inlet pipe used for introducing the cooled smoke gas into the cooling region is arranged on the cooling region, and a smoke gas cooling mechanism is matched and connected onto the cooling smoke gas inlet pipe, is connected with the preheating air heat exchange mechanism and is used for receiving the preheated smoke gas from the preheating air heat exchange mechanism. The steel pipe normalizing furnace has the advantages that the steel pipe normalizing can be completed in the furnace, so the defect of environment influence can be overcome, and in addition, the steel pipe normalizing furnace also has the advantage that the resources and the energy sources are saved.
Description
Technical field
The invention belongs to metal pipe material processing kiln technical field, be specifically related to a kind of steel pipe normalizing stove
Background technology
normalizing; Claiming normalizing again, is that workpiece is heated to Ac3 or the above 30-50 of Accm ℃, behind the insulation certain hour; From stove, take out in air or water spray, spraying or blowing refrigerative metal heat treatmet technology, its purpose is to make grain refining and distribution of carbides homogenizing.Normalizing is that with the annealed difference normalizing speed of cooling is faster than the annealing speed of cooling, thereby normalized structure is thinner than annealed structure, and its mechanical and physical performance also increases.Free ferrite all changed austenitic finishing temperature into when aforementioned Ac3 was meant heating; Aforesaid Accm is the actual critical temperature line of pining for the hypereutectoid steel complete austenitizing that adds.
are present, and steel pipe's production manufacturer adopts traditional flaming heating to handle stove continuously to steel pipe normalizing usually.When carrying out steel pipe normalizing technology, generally adopt the high temperature air-cooled process of coming out of the stove to realize.Air-cooled have equipment of not taking and the high strong point of production efficiency though high temperature is come out of the stove; But there is following technical problem: the one, the surface quality of steel pipe is difficult to ensure; Because it is air-cooled that steel pipe is exposed to after the condition of high temperature is come out of the stove in the air dielectric; Be prone to cause the steel tube surface abrupt oxidization, and produce bark shape oxide debris, also be attended by oxidation foaming phenomenon when serious; The 2nd, cause the wasting of resources, for example wall thickness is the rectangular steel pipe of 4 ㎜, in stove outer air medium air-cooled after, two-sided (inside and outside wall) oxide thickness is generally 0.04 ㎜, thereby causes steel to consume 10 ‰ (10/1000ths); The 3rd, increase the subsequent disposal operation and be prone to cause environmental pollution; Because, need through the pickling process pickling in order to remove surface scale (zone of oxidation); After pickling, carry out reconditioning or shot peening; Thereby not only increased the cost of the technology of dealing with problems arising from an accident, and the pickling meeting undermines environment, and particularly that spent pickle liquor is discarded improper; The 4th, the steel pipe mechanical performance can not get guaranteeing; Consistence is poor; Because because steel pipe thermal treatment is many arrangements; Outer air-cooled the receiving of stove can not be controlled factor affecting such as wind-force size, nearly wind, wind far away, the back and sunny side, thereby objectively is difficult to ensure the consistence of the mechanical and physical performance of the steel pipe after the normalizing treatment; The 5th, waste energy, it is low to be embodied in the process waste heat utilization ratio, advocates saving type and energy-saving economic spirit is runed counter to the present whole society.
are certain; If with steel pipe normalizing treatment in the normalizing furnace that after the thermal treatment of flaming heating continuous heat treating furnace, changes configuration separately over to protective atmosphere (like nitrogen); So above-mentioned oxidative phenomena can effectively be contained, but selecting this mode can greatly increase processing cost.
are undoubted, in flaming heating continuous heat treating furnace, implement in the stove normalizing and can eliminate aforesaid 5 shortcomings fully, yet in disclosed patent and non-patent literature, all be not seen in accordingly or claim referential teachings.For this reason, the applicant has done useful exploration, has found the way of dealing with problems finally, and the technical scheme that will introduce below is based on producing under this background
Summary of the invention
task of the present invention is to provide a kind of steel pipe that can make in flaming heating continuous heat treating furnace, to accomplish normalizing and use and avoid because of stove the outer air-cooled surface oxidation that causes, waste the resource and the energy, influence the consistence of steel pipe physicals and avoid undermining environment because of follow-up cleanup acid treatment causes.
task of the present invention is accomplished like this, and a kind of steel pipe normalizing stove comprises flaming continuous heat treatment furnace body; One end of the burner hearth of this flaming continuous heat treatment furnace body is the burning heat tracing zone with smoke outlet, and the other end is the cooling zone, and burning is communicated with by the narrow neck road that contracts between heat tracing zone and the cooling zone; Be characterised in that: on described smoke outlet, connect the preheated air heat exchange mechanisms that is used for the preparatory heat exchange of high-temperature flue gas of coming from smoke outlet; Described cooling zone be provided with one be used for cooled smoke is introduced the cooling zone the cooled flue gas inlet pipe, on this cooled flue gas inlet pipe, connected a flue gas cooling body, this flue gas cooling body is connected with described preheated air heat exchange mechanisms; Be used to accept flue gas from after the preheating of preheated air heat exchange mechanisms; Described preheated air heat exchange mechanisms comprises preparatory heat exchange casing, first, second tube sheet, one group of first heat transfer tube and one first blower fan, and a side of heat exchange casing has one first interface and one second interface in advance, and the other end has one the 3rd interface; First, second tube sheet self is fixed in the case chamber of preparatory heat exchange casing accordingly; By first, second tube sheet the case chamber of preparatory heat exchange casing is divided into the hot blast chamber at top, the flue gas heat exchange chamber at middle part and the air-inlet cavity of bottom, wherein: the hot blast chamber is positioned at the top of first tube sheet, and the flue gas heat exchange chamber is between first, second tube sheet; And air-inlet cavity is positioned at the below of second tube sheet; Described first interface communicates with the hot blast chamber, and said second interface and the 3rd interface all communicate with the flue gas heat exchange chamber, and one group of first heat transfer tube is fixed between first, second tube sheet; The middle part of each first heat transfer tube is positioned at the flue gas heat exchange chamber; And the upper end communicates with the hot blast chamber, and the lower end then communicates with air-inlet cavity, and first blower fan and said air-inlet cavity are matched; Be used for introducing outside air to air-inlet cavity; Described first interface is connected with the burner that said flaming continuous heat treatment furnace body is disposed through pipeline, and second interface is connected with said smoke outlet, and described the 3rd interface is connected with described flue gas cooling body through the flue gas fairlead.
are in another concrete embodiment of the present invention; Described second, third interface forms the diagonal angle each other relation is set; Wherein, second interface is positioned at a side-lower in said flue gas heat exchange chamber, and the 3rd interface is positioned at the top of the opposite side in said flue gas heat exchange chamber.
are positioned at described first heat transfer tube on the outer wall in said flue gas heat exchange chamber and constitute first heat exchange fin in another concrete embodiment of the present invention.
are in another concrete embodiment of the present invention; Described flue gas cooling body comprises flue gas cooling casing, the 3rd, the 4th tube sheet, one group of second heat transfer tube and one second blower fan, and flue gas cooling casing has one the 4th interface and one the 5th interface towards a side of said preheated air heat exchange mechanisms, and opposite side has one the 6th interface; Three, the 4th tube sheet self is fixed in the case chamber of flue gas cooling casing accordingly; By the 3rd, the 4th tube sheet the case chamber that flue gas cools off casing is divided into the hot-water cavity at top, the flue gas cooling chamber at middle part and the cold water intake antrum of bottom, wherein: hot-water cavity is positioned at the top of the 3rd tube sheet, and the flue gas cooling chamber is between the 3rd, the 4th tube sheet; And the cold water intake antrum is positioned at the below of the 4th tube sheet; Described the 4th interface communicates with hot-water cavity, described the 5th interface and the 6th interface all with the flue gas communicating with cooling cavity, one group of second heat transfer tube is fixed between the 3rd, the 4th tube sheet; The middle part of each second heat transfer tube is positioned at the flue gas cooling chamber; The upper end communicates with hot-water cavity, and the lower end then communicates with the cold water intake antrum, and second blower fan and said the 6th interface connect; Described the 5th interface is connected with said cooled flue gas inlet pipe, and described the 4th interface is taken the place through pipeline and hot water and is connected.
also have among the concrete embodiment of the present invention; Described the 5th, the 6th interface forms the diagonal angle each other relation is set; Wherein, the 5th interface is positioned at a side-lower of said flue gas cooling chamber, and the 6th interface is positioned at the top of the opposite side of flue gas cooling chamber.
more of the present invention and among concrete embodiment, is positioned at described second heat transfer tube on the outer wall of said flue gas cooling chamber to constitute second heat exchange fin.
have connected a cold water inlet on described cold water intake antrum in of the present invention and then concrete embodiment, on the pipeline of this cold water inlet, be equipped with valve mechanism.
are of the present invention again more and among concrete embodiment; Described valve mechanism comprises first, second SV and the 3rd SV, and this first, second, third SV is not only independently of one another but also communicate with described cold water inlet separately.
are provided with director in described cooling zone and at the position corresponding to described cooled flue gas inlet pipe in again of the present invention and then concrete embodiment.
technical scheme provided by the invention is owing to connected the preheated air heat exchange mechanisms on the smoke outlet of burning heat tracing zone; Introduce connected and flue gas cooling body that be connected with the cooled flue gas inlet pipe of cooling zone by the flue gas of preheated air heat exchange mechanisms after with heat exchange; Get into cooling zone 12 through cooled smoke; Realize the normalizing atmosphere protection by the useless flue gas of refrigerative as the normalizing air cooled medium, because the oxygen level in the flue gas is tending towards consistent with the ordinary nitrogen oxygen level in 3 ‰-2% scope; Therefore can in stove, accomplish steel pipe normalizing; Thereby can avoid prior art outside stove to steel pipe normalizing caused such as surface oxidation, the drawback that influences mechanical and physical performance and in last handling process, environment is exerted an influence, in addition, also have the strong point that economizes on resources with the energy.
Description of drawings
Fig. 1 is the embodiments of the invention structure iron.
Embodiment
can be expressly understood technical spirit of the present invention and beneficial effect more for the inspector that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.
Fig. 1 is asked for an interview in
; Having provided flaming continuous heat treatment furnace body 1, is example (as follows) with present location status shown in Figure 1, and an end of the burner hearth of this flaming continuous heat treatment furnace body 1 is that left end is a burning heat tracing zone 11; And the other end is a right-hand member is cooling zone 12; Burning constitutes the narrow neck road 13 that contracts between heat tracing zone 11 and the cooling zone 12, that is to say, is communicated by neck road 13 between burn heat tracing zone 11 and the cooling zone 12.Undoubtedly, cooling zone 12 is being taken on the function of normalizing in fact.On burning heat tracing zone 11, be equipped with a smoke outlet 111, and on cooling zone 12, be equipped with cooled flue gas inlet pipe 121.
are as the technical essential of technical scheme of the present invention: on aforesaid smoke outlet 111, connected a preheated air heat exchange mechanisms 2; And on aforesaid cooled flue gas inlet pipe 121, connected a flue gas cooling body 3; The high-temperature flue gas that comes from smoke outlet 111 gets into preheated air heat exchange mechanisms 2; Because this preheated air heat exchange mechanisms 2 is connected (pipeline connection) with flue gas cooling body 3; Therefore after the 2 preparatory heat exchange of preheated air heat exchange mechanisms and flue gas that reduced temperature is introduced flue gas cooling body 3 and then cooling, makes flue gas be cooled to the required temperature of normalizing and introduces 12 pairs of illustrated steel pipe 5 normalizings in cooling zone.
aforesaid preheated air heat exchange mechanisms 2 comprises preparatory heat exchange casing 21,22,23, one group of first heat transfer tube 24 of first, second tube sheet and first blower fan 25; Heat exchange casing 21 is followed under user mode in aforesaid flaming continuous heat treatment furnace body 1 in advance; This preparatory heat exchange casing 21 is provided with one first interface 211 and one second interface 212 towards a side of flue gas cooling body 3; And opposite side is provided with one the 3rd interface 213; Self is corresponding and be arranged in the case chamber of preparatory heat exchange casing 21 for first, second tube sheet 22,23; By first, second tube sheet 22,23 the case chamber of preparatory heat exchange casing 21 is separated out hot blast chamber 214, flue gas heat exchange chamber 215 and air-inlet cavity 216; Hot blast chamber 214 is positioned at the top of first tube sheet 22, and flue gas heat exchange chamber 215 is at first, second tube sheet 22, between 23, and air-inlet cavity 216 is positioned at the bottom of second tube sheet 23; Aforesaid first interface 211 and hot blast chamber 214 are corresponding and communicate, and second interface 212 and the 3rd interface 213 all communicate with flue gas heat exchange chamber 215.Wherein: second interface 212 communicates with described smoke outlet 111; And this second interface 212 and the 3rd interface 213 form the diagonal angle each other relation are set; Promptly; Second interface 212 is positioned at the below of a side in flue gas heat exchange chamber 215, and the 3rd interface 213 is positioned at the top of the opposite side in flue gas heat exchange chamber 215.One group of first heat transfer tube 24 be arranged on first, second tube sheet 22, between 23, the upper end of each first heat transfer tube 24 communicates with hot blast chamber 214, the lower end communicates with air-inlet cavity 216, and the middle part of first heat transfer tube 24 is positioned at flue gas heat exchange chamber 215.Preferably, be positioned at each first heat transfer tube 24 that (on the outer wall of body) constitutes first heat exchange fin 241 on the body in flue gas heat exchange chamber 215, visible, first heat transfer tube 24 is an external finned tube.First blower fan 25 is connected with air-inlet cavity 216.
are in running order following at first blower fan 25; Introduce aforesaid flue gas heat exchange chamber 215 by the high-temperature flue gas of smoke outlet 111 in second interface 212 will burn heat tracing zone 11; First blower fan 25 is introduced air-inlet cavity 216 with outside air simultaneously; The air that enters in the air-inlet cavity 216 gets into hot blast chamber 214 behind the tube chamber of first heat transfer tube 24; First interface 211 by connecting with hot blast chamber 214 returns the air after the heat exchange (uncontaminated air) to the burner that draws to flaming continuous heat treatment furnace body 1 by pipeline, thereby can save energy.Enter into flue gas in the flue gas heat exchange chamber 215 after 24 heat exchange of first heat transfer tube from causing flue gas cooling body 3 with the 3rd interface 213 matched flue gas fairleads 2131.
preferably can coat preheating casing thermal insulation layer 217 on the outer wall of aforesaid preparatory heat exchange casing 21.
aforesaid flue gas cooling body 3 comprises flue gas cooling casing 31,32,33, one group of second heat transfer tube 34 of the 3rd, the 4th tube sheet and second blower fan 35; Flue gas cooling casing 31 is followed under user mode in flaming continuous heat treatment furnace body 1; And preferred position corresponding to aforesaid cooling zone 12; This flue gas cooling casing 31 is provided with one the 4th interface 311 and one the 5th interface 312 towards a side of aforesaid preparatory heat exchange casing 21; And opposite side is provided with one the 6th interface 313; Three, self is corresponding and be arranged in the case chamber of flue gas cooling casing 31 for the 4th tube sheet 32,33, by the 3rd, the 4th tube sheet 32,33 the case chamber that flue gas cools off casing 31 is separated out hot-water cavity 314, flue gas cooling chamber 315 and cold water intake antrum 316, and hot-water cavity 314 is positioned at the top of the 3rd tube sheet 32; Flue gas cooling chamber 315 is at the 3rd, the 4th tube sheet 32, between 33, and cold water intake antrum 316 is positioned at the below of the 4th tube sheet 33.Aforesaid the 4th interface 311 and hot-water cavity 314 are corresponding and communicate; The 5th interface 312 and the 6th interface 313 all communicate with flue gas cooling chamber 315; And the 5th interface 312 and the 6th interface 313 form the diagonal angle each other relation are set, that is, the 5th interface 312 is positioned at the bottom of a side of flue gas cooling chamber 315; Connect with aforesaid cooled flue gas inlet pipe 12, and the 6th interface 313 is positioned at the top of the opposite side of flue gas cooling chamber 315.One group of second heat transfer tube 34 be arranged on the 3rd, the 4th tube sheet 32, between 33, the upper end of each second heat transfer tube 34 communicates with hot-water cavity 314, and the lower end communicates with cold water intake antrum 316, the middle part of second heat transfer tube 34 is positioned at flue gas cooling chamber 315.Preferably, be positioned at each second heat transfer tube 34 that (on the outer wall of body) constitutes first heat exchange fin 341 on the wall body of flue gas cooling chamber 315, visible, second heat transfer tube 34 is an external finned tube.Second blower fan 35 is connected with aforesaid the 6th interface 313, and particularly, the blast inlet of second blower fan 35 is connected with aforesaid flue gas fairlead 2131, and air outlet is connected with the 6th interface 313.On aforesaid water coolant intake antrum 316, connected cold water inlet 3161, cold water inlet 3161 is provided with valve mechanism 4.
are in running order down in aforesaid preheated air heat exchange mechanisms 2; And flue gas cooling body 3 is in running order following; Opening controlling valve mechanism 4; Cold water is introduced cold water intake antrum 316 through cold water inlet 3161, and the cold water that enters in the cold water intake antrum 316 gets into hot-water cavity 314 through the tube chamber of second heat transfer tube 34, causes hot water field of employment such as dining room and publilc baths or the like by the road by the 4th interface 311.Coming from the flue gas of the air outlet of second blower fan 35 reduces to the desired temperature of normalizing process with flue-gas temperature and draws 12 pairs of steel pipe 5 normalizings that get in the cooling zone 12 through cooled flue gas inlet pipe 121 introducing cooling zones from the 5th interface 312 through the 6th interface 313 introducing flue gas cooling chambers 315 after 34 heat exchange of second heat transfer tube.Hence one can see that, and the hot water that comes from hot-water cavity 314 can be used as domestic water or other use, and the flue gas of cooling gets into 12 pairs of steel pipe 5 normalizings in cooling zone, thereby obtain the technique effect of double gain.
preferably are provided with a director 122 in cooling zone 12 and in the position corresponding to cooled flue gas inlet pipe 121.And then, can coat thermal insulation layer 317 at the outer wall of aforesaid flue gas cooling casing 31.
aforesaid valve mechanism 4 comprises first, second SV 41,42 and the 3rd SV 43; Can know that by diagram first, second, third SV 41,42,43 that all is controlled by unit is not only independently of one another but also communicate with cold water inlet 3161 separately.By first SV, 41 controlled chilling flue-gas temperatures, by the second solenoid control water coolant leaving water temperature(LWT), by the furnace temperature of the 3rd solenoid control cooling zone 12.For example, when surpassing desired temperature, first SV 141 is opened, to keep normal cold flue gas temperature; When the water coolant leaving water temperature(LWT) surpasses set(ting)value, then open second SV 42, to keep normal flue gas cooling body 3 use temperatures; When the cooling zone temperature surpasses set(ting)value, open the 3rd SV 43.
In sum, technical scheme provided by the invention has overcome the shortcoming in the prior art, has reached goal of the invention, has embodied the described technique effect of applicant
Claims (9)
1.
a kind of steel pipe normalizing stove; Comprise flaming continuous heat treatment furnace body (1); One end of the burner hearth of this flaming continuous heat treatment furnace body (1) is for having the burning heat tracing zone (11) of smoke outlet (111); And the other end is cooling zone (12); The burning heat tracing zone (11) with cooling zone (12) between be communicated with by the narrow neck road (13) that contracts; It is characterized in that: on described smoke outlet (111), connect the preheated air heat exchange mechanisms (2) that is used for the preparatory heat exchange of high-temperature flue gas of coming from smoke outlet (111); Described cooling zone (12) be provided with one be used for cooled smoke is introduced cooling zone (12) cooled flue gas inlet pipe (121), on this cooled flue gas inlet pipe (121), connected a flue gas cooling body (3), this flue gas cooling body (3) is connected with described preheated air heat exchange mechanisms (2); Be used for accepting from the flue gas after preheated air heat exchange mechanisms (2) preheating; Described preheated air heat exchange mechanisms (2) comprises preparatory heat exchange casing (21), first, second tube sheet (22,23), one group of first heat transfer tube (24) and one first blower fan (25), and a side of heat exchange casing (21) has one first interface (211) and one second interface (212) in advance, and the other end has one the 3rd interface (213); First, second tube sheet (22,23) self is fixed in the case chamber of preparatory heat exchange casing (21) accordingly; By first, second tube sheet (22,23) the case chamber of preparatory heat exchange casing (21) is divided into the hot blast chamber (214) at top, the flue gas heat exchange chamber (215) at middle part and the air-inlet cavity (216) of bottom, wherein: hot blast chamber (214) are positioned at the top of first tube sheet (22), and flue gas heat exchange chamber (215) are positioned between first, second tube sheet (22,23); And air-inlet cavity (216) is positioned at the below of second tube sheet (23); Described first interface (211) communicates with hot blast chamber (214), and said second interface (212) and the 3rd interface (213) all communicate with flue gas heat exchange chamber (215), and one group of first heat transfer tube (24) is fixed between first, second tube sheet (22,23); The middle part of each first heat transfer tube (24) is positioned at flue gas heat exchange chamber (215); And the upper end communicates with hot blast chamber (214), and the lower end then communicates with air-inlet cavity (216), and first blower fan (25) is matched with said air-inlet cavity (216); Be used for introducing outside air to air-inlet cavity (216); Described first interface (211) is connected with the burner that said flaming continuous heat treatment furnace body (1) is disposed through pipeline, and second interface (212) is connected with said smoke outlet (111), and described the 3rd interface (213) is connected with described flue gas cooling body (3) through flue gas fairlead (2131).
2.
steel pipe normalizing stove according to claim 1; It is characterized in that described second, third interface (212,213) forms the diagonal angle each other relation is set; Wherein, Second interface (212) is positioned at a side-lower in said flue gas heat exchange chamber (215), and the 3rd interface (213) is positioned at the top of the opposite side in said flue gas heat exchange chamber (215).
3.
steel pipe normalizing stove according to claim 1 is characterized in that on described first heat transfer tube (24) is positioned at the outer wall in said flue gas heat exchange chamber (215), constituting first heat exchange fin (241).
4.
steel pipe normalizing stove according to claim 1; It is characterized in that described flue gas cooling body (3) comprises flue gas cooling casing (31), the 3rd, the 4th tube sheet (32,33), one group of second heat transfer tube (34) and one second blower fan (35); Flue gas cooling casing (31) has one the 4th interface (311) and one the 5th interface (312) towards a side of said preheated air heat exchange mechanisms (2); And opposite side has one the 6th interface (313); Three, the 4th tube sheet (32,33) self is fixed in the case chamber of flue gas cooling casing (31) accordingly; By the 3rd, the 4th tube sheet (32,33) the case chamber that flue gas cools off casing (31) is divided into the hot-water cavity (314) at top, the flue gas cooling chamber (315) at middle part and the cold water intake antrum (316) of bottom, wherein: hot-water cavity (314) is positioned at the top of the 3rd tube sheet (32), and flue gas cooling chamber (315) is positioned between the 3rd, the 4th tube sheet (32,33); And cold water intake antrum (316) is positioned at the below of the 4th tube sheet (33); Described the 4th interface (311) communicates with hot-water cavity (314), and described the 5th interface (312) and the 6th interface (313) all communicate with flue gas cooling chamber (315), and one group of second heat transfer tube (34) is fixed between the 3rd, the 4th tube sheet (32,33); The middle part of each second heat transfer tube (34) is positioned at flue gas cooling chamber (315); The upper end communicates with hot-water cavity (314), and the lower end then communicates with cold water intake antrum (316), and second blower fan (35) connects with said the 6th interface (313); Described the 5th interface (312) is connected with said cooled flue gas inlet pipe (121), and described the 4th interface (311) is taken the place through pipeline and hot water and is connected.
5.
steel pipe normalizing stove according to claim 4; It is characterized in that described the 5th, the 6th interface (312,313) forms the diagonal angle each other relation is set; Wherein, The 5th interface (312) is positioned at a side-lower of said flue gas cooling chamber (315), and the 6th interface (313) is positioned at the top of the opposite side of flue gas cooling chamber (315).
6.
steel pipe normalizing stove according to claim 4 is characterized in that on described second heat transfer tube (34) is positioned at the outer wall of said flue gas cooling chamber (315), constituting second heat exchange fin (341).
7.
steel pipe normalizing stove according to claim 4 is characterized in that on described cold water intake antrum (316), having connected a cold water inlet (3161), on the pipeline of this cold water inlet (3161), is equipped with valve mechanism (4).
8.
steel pipe normalizing stove according to claim 7; It is characterized in that described valve mechanism (4) comprises first, second SV (41,42) and the 3rd SV (43), this first, second, third SV (41,42,43) is not only independently of one another but also communicate with described cold water inlet (3161) separately.
9.
Steel pipe normalizing stove according to claim 1 is characterized in that in described cooling zone (12) and at the position corresponding to described cooled flue gas inlet pipe (121), being provided with director (122)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385736A CN102399964B (en) | 2011-11-29 | 2011-11-29 | Steel pipe normalizing furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385736A CN102399964B (en) | 2011-11-29 | 2011-11-29 | Steel pipe normalizing furnace |
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| Publication Number | Publication Date |
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| CN102399964A CN102399964A (en) | 2012-04-04 |
| CN102399964B true CN102399964B (en) | 2012-10-10 |
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| CN105318740A (en) * | 2015-11-12 | 2016-02-10 | 无锡市豫达换热器有限公司 | Compact heat exchanger adopting dust prevention and explosion prevention technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440427A (en) * | 2008-12-19 | 2009-05-27 | 攀钢集团成都钢铁有限责任公司 | Steel pipe normalizing method |
| CN201347444Y (en) * | 2008-12-19 | 2009-11-18 | 攀钢集团成都钢铁有限责任公司 | Flue gas protecting furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63169322A (en) * | 1987-01-06 | 1988-07-13 | Yoshiaki Yokoyama | Continuous heat-treating furnace |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440427A (en) * | 2008-12-19 | 2009-05-27 | 攀钢集团成都钢铁有限责任公司 | Steel pipe normalizing method |
| CN201347444Y (en) * | 2008-12-19 | 2009-11-18 | 攀钢集团成都钢铁有限责任公司 | Flue gas protecting furnace |
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| CN102399964A (en) | 2012-04-04 |
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