CN201722400U - All-welded double-flow gas preheater with corrugated plates - Google Patents
All-welded double-flow gas preheater with corrugated plates Download PDFInfo
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- CN201722400U CN201722400U CN2010201955854U CN201020195585U CN201722400U CN 201722400 U CN201722400 U CN 201722400U CN 2010201955854 U CN2010201955854 U CN 2010201955854U CN 201020195585 U CN201020195585 U CN 201020195585U CN 201722400 U CN201722400 U CN 201722400U
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Abstract
The utility model relates to an all-welded double-flow gas preheater with corrugated plates, which comprises a gas inlet bell-mouth, a gas outlet bell-mouth, a smoke inlet bell-mouth, a smoke outlet bell-mouth, a connecting box, a first main heat exchange unit and a second main heat exchange unit. The all-welded double-flow gas preheater is characterized in that the two main heat exchange units respectively consist of a plurality of heat exchange unit modules, a corrugated expansion joint and a unit frame. The all-welded double-flow gas preheater with corrugated plates has the advantages that 1), a certain space is reserved between the two main heat exchange units to be used for overhaul so as to bring convenience for cleaning the heat exchange unit modules, 2), corrugated pipe expanded joints arranged in the all-welded double-flow gas preheater avoids temperature difference stress caused by thermal expansion of medium on two sides and avoids damage to equipment due to uneven thermal expansion of plate bundles and a box body, 3), main heat exchange unit frames, the smoke outlet bell-mouth and the connecting box adopt aluminum silicate internal heat-insulation structures, thereby not only saving material cost but reducing heat loss, and 4), novel corrugated plates are adopted to replace traditional heat transmission elements, can form turbulent flows under extremely low Reynolds number and increase heat transmission property of fluid.
Description
Technical field:
The utility model relates to a kind of heat exchanger, more specifically to a kind of all welded type double fluid journey waved plate gas preheating device.
Background technology:
Improving wind-warm syndrome is to reduce the most economical effective measures of blast furnace coke ratio, the reason that blast furnace air temperature is not high mainly is the coal gas that hotblast stove lacks higher calorific value, theoretical combustion temperature is not high, want to improve wind-warm syndrome, the just blast furnace gas preheating that need use hot blast stove burning, improve theoretical combustion temperature, and then improve wind-warm syndrome.Steel mill generally adopts shell and tube heat exchanger and heat pipe-type (heating agent) interchanger to utilize the hot-blast stove fume waste heat to come preheating gas at present.Shell and tube gas preheating device is because heat transfer property is poor, and corrosion easy to wear is bulky, involve great expense, and the easy dust stratification dirt of heat transfer tube, shortcoming such as maintenance capacity is big, and work-ing life is short is used fewer and feweri in Iron And Steel Industry.Heat pipe-type (heating agent) gas preheating device is the maximum a kind of preheater of present blast furnace ironmaking sector application, owing to there are factors such as heating agent loss, venting, heat pipe can lose efficacy because of vacuum tightness descends.Because heat pipe failure is difficult to judge, need generally speaking all heat pipes are vacuumized again or change, the maintenance cost height, the turnaround is long, causes bigger financial loss indirectly.The hot tube heat exchanger that is added with fin also has other some weakness, such as, row's number of heat pipe can not be excessive, and fin dust stratification and easy-clear have not only reduced the heat exchange effect, can stop up when serious, influence the ordinary production of hotblast stove.
The utility model content:
The purpose of this utility model is that a kind of simple in structure, heat transfer efficiency is high, easy cleaning, cost are low all welded type double fluid journey waved plate gas preheating device is provided at the prior art weak point.
The purpose of this utility model is to realize by following measure: a kind of all welded type double fluid journey waved plate gas preheating device, it comprises coal gas import and export loudspeaker, flue gas import and export loudspeaker, company's case, the first main heat exchange unit, the second main heat exchange unit, it is characterized in that: described two main heat exchange unit are formed by some heat exchange unit modules, bellow expansion joint, unit framework, wherein:
Described heat exchange unit module is made up of some groups of plate pipes, end plates, described plate pipe is by the full weld connection along its length of two phases heat transferring plate across a certain distance, the plate pipe is arrangement arranged side by side, heat transferring plate bending outside the mouth of pipe at each plate pipe mouth of pipe place, the heat transferring plate of plate pipe one side is connected with the heat transferring plate full weld of a side of adjacent panels pipe, the bending of described end plate outer rim is interior grooved, the end plate inner edge is connected with each tube holes on tube sheet free edge full weld of arranging side by side, and the heat exchange unit module segmentation is the outer gas flue of plate pipe inner gas passage and plate pipe;
Described some heat exchange unit modules are divided into two groups and place side by side in the unit framework, and each organizes the connection of heat exchange unit modular end plate full weld, and each is organized between heat exchange unit module board pipe inner gas passage outlet side and unit framework and is welded with bellow expansion joint;
The described first main heat exchange unit, the second main heat exchange unit strings connects in succession changes, unitary two groups of heat exchange unit modules of first main heat exchange and the unitary two groups of heat exchange unit modules of second main heat exchange leave certain spacing, the gas approach loudspeaker connect the first main heat exchange unit exhaust gases passes import, the exhanst gas outlet loudspeaker connect the second main heat exchange unit exhaust gases passes outlet, the gas inlet loudspeaker connect the second main heat exchange unit gas flue import, the gas exit loudspeaker connect the first main heat exchange unit gas flue outlet, the described case that connects connects the first main heat exchange unit gas flue import and the second main heat exchange unit gas flue outlet, and the gas preheating device forms by the straight exhaust gases passes of along continuous straight runs mobile and is the vertical direction double-current journey gas flue of turning back.
Described heat transferring plate lateral cross section and longitudinal cross-section are protruding, recessed alternate ripple.
Unitary two groups of heat exchange unit modules of described first main heat exchange and the unitary two groups of heat exchange unit modules of second main heat exchange leave a determining deviation, have access opening on the second main heat exchange unit framework wall.
Described coal gas import and export loudspeaker, flue gas import and export loudspeaker respectively connect case and each main heat exchange unit framework inboard all is coated with the pure aluminium silicate inside thermal conservation material.
Compared with prior art, the beneficial effects of the utility model are: 1) leave certain space as maintenance usefulness between two main heat exchange unit, made things convenient for the cleaning of heat exchanging unit module.2) in inside configuration bellows expansion joint is set, has avoided the media of both sides thermal expansion and the temperature stress that causes, and the temperature stress that causes of the thermal expansion inequality of plate bundle and casing is to the destruction of equipment.3) main heat exchange unit framework and exhanst gas outlet loudspeaker and even case employing pure aluminium silicate internal insulation structure had both been saved material cost, had reduced calorific loss again.4) adopt a kind of novel waved plate to replace traditional heat transfer element, because the runner section form of heat transferring plate longshore current body flow direction constantly changes, strengthen the fluidic disturbance greatly, thereby can under very low Reynolds number, form turbulent flow, thereby increased the fluidic heat transfer property.And the plate smooth surface has littler fouling resistance.Flue gas and coal gas fluid are cross flow in single main heat exchange unit, but make it near countercurrent heat-transfer by the coal gas double-current journey of turning back is set, and have improved heat transfer efficiency.
Description of drawings:
Fig. 1 is an example structure synoptic diagram that the utility model proposes.
Fig. 2 is a present embodiment heat exchange unit modular structure synoptic diagram.
Fig. 3 is Fig. 2 A-A diagrammatic cross-section.
Fig. 4 is the present embodiment second main heat exchange unit bellow expansion joint scheme of installation.
Fig. 5 is a present embodiment main heat exchange unit heat transferring plate structural representation.
Fig. 6 is Fig. 5 E-E diagrammatic cross-section.
Embodiment:
Below in conjunction with accompanying drawing embodiment is elaborated:
In an embodiment of the present utility model shown in Figure 1, a kind of all welded type double fluid journey waved plate gas preheating device, it comprises: gas inlet loudspeaker 1, gas exit loudspeaker 2, gas approach loudspeaker 3, exhanst gas outlet loudspeaker 4, company's case 5, the first main heat exchange unit 6, the second main heat exchange unit 7.Described two main heat exchange unit are formed by some heat exchange unit modules 61, bellow expansion joint 62, unit framework 63.
Fig. 2 is present embodiment heat exchange unit module 61 structural representations.Among the figure, described heat exchange unit module 61 is made up of some groups of plate pipes 611, end plate 613, described plate pipe 611 is by the full weld connection along its length of two phases heat transferring plate 612 across a certain distance, plate pipe 611 is arrangement arranged side by side, heat transferring plate 612 bending outside the mouth of pipe at each plate pipe mouth of pipe place, the heat transferring plate 612 of plate pipe 611 1 sides is connected with heat transferring plate 612 full welds of a side of adjacent panels pipe, described end plate 613 outer rim bendings are interior grooved, end plate 613 inner edges are connected with each tube sheet 611 mouth of pipe free edge full weld of arranging side by side, the local connection as shown in Figure 3.Heat exchange unit module 61 is divided into plate pipe inner gas passage 615 and the outer gas flue 616 of plate pipe, by full weld exhaust gases passes and gas flue is kept apart fully.
Fig. 4 is the present embodiment second main heat exchange unit bellow expansion joint scheme of installation.Among the figure, some heat exchange unit modules 61 are divided into two groups and place side by side in the unit framework 63, each is organized heat exchange unit module 61 end plates 613 full welds and connects, each is organized between heat exchange unit module 61 plate pipes, 611 inner gas passage outlet sides and unit framework and is welded with bellow expansion joint, and the use of expansion joint can remedy the temperature stress that the thermal expansion inequality of plate bundle and casing causes.The first main heat exchange unit bellow expansion joint installation situation and the second main heat exchange unit omit explanation equally.
The described first main heat exchange unit 6, the second main heat exchange unit, 7 serial connections connect changes, unitary two groups of heat exchange unit modules of first main heat exchange and the unitary two groups of heat exchange unit modules of second main heat exchange leave certain spacing 8, on the second main heat exchange unit framework wall, have access opening 81, the cleaning of heat exchanging unit module is convenient in the setting of spacing 8 and access opening 81, removes the laying dust in the tube sheet.Gas approach loudspeaker 3 connect the 6 exhaust gases passes imports of the first main heat exchange unit, exhanst gas outlet loudspeaker 4 connect the 7 exhaust gases passes outlet of the second main heat exchange unit, gas inlet loudspeaker 1 connect the 7 gas flue imports of the second main heat exchange unit, gas exit loudspeaker 2 connect the 6 gas flues outlet of the first main heat exchange unit, the described case 5 that connects connects 6 gas flue imports of the first main heat exchange unit and the outlet of the second main heat exchange unit, 7 gas flues, and the gas preheating device forms by the straight exhaust gases passes of along continuous straight runs mobile and is the vertical direction double-current journey gas flue of turning back.Make it near countercurrent heat-transfer by the coal gas double-current journey of turning back is set, improved heat transfer efficiency.
It is present embodiment main heat exchange unit heat transferring plate structural representation that the utility model is further taked following measure: Fig. 5, and Fig. 6 is Fig. 5 E-E diagrammatic cross-section.Among the figure, heat transferring plate 612 lateral cross section and longitudinal cross-section are protruding 613, recessed 614 alternate ripples, and after two heat transferring plates formed the plate pipe, protruding 613, recessed 614 alternate plate lines made the channel cross-section of gas change, easily form turbulent flow, increased the fluidic heat transfer property.At coal gas import and export loudspeaker, flue gas import and export loudspeaker connect case and each main heat exchange unit framework inboard and all are coated with the pure aluminium silicate inside thermal conservation material, have so both saved material cost, have reduced calorific loss again elsewhere.
The foregoing description does not constitute restriction of the present utility model, and all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (4)
1. all welded type double fluid journey waved plate gas preheating device, it comprises coal gas import and export loudspeaker, flue gas import and export loudspeaker, company's case, the first main heat exchange unit, the second main heat exchange unit, it is characterized in that: described two main heat exchange unit are formed by some heat exchange unit modules, bellow expansion joint, unit framework, wherein:
Described heat exchange unit module is made up of some groups of plate pipes, end plates, described plate pipe is by the full weld connection along its length of two phases heat transferring plate across a certain distance, the plate pipe is arrangement arranged side by side, heat transferring plate bending outside the mouth of pipe at each plate pipe mouth of pipe place, the heat transferring plate of plate pipe one side is connected with the heat transferring plate full weld of a side of adjacent panels pipe, the bending of described end plate outer rim is interior grooved, the end plate inner edge is connected with each tube holes on tube sheet free edge full weld of arranging side by side, and the heat exchange unit module segmentation is the outer gas flue of plate pipe inner gas passage and plate pipe;
Described some heat exchange unit modules are divided into two groups and place side by side in the unit framework, and each organizes the connection of heat exchange unit modular end plate full weld, and each is organized between heat exchange unit module board pipe inner gas passage outlet side and unit framework and is welded with bellow expansion joint;
The described first main heat exchange unit, the second main heat exchange unit strings connects in succession changes, unitary two groups of heat exchange unit modules of first main heat exchange and the unitary two groups of heat exchange unit modules of second main heat exchange leave certain spacing, the gas approach loudspeaker connect the first main heat exchange unit exhaust gases passes import, the exhanst gas outlet loudspeaker connect the second main heat exchange unit exhaust gases passes outlet, the gas inlet loudspeaker connect the second main heat exchange unit gas flue import, the gas exit loudspeaker connect the first main heat exchange unit gas flue outlet, the described case that connects connects the first main heat exchange unit gas flue import and the second main heat exchange unit gas flue outlet, and the gas preheating device forms by the straight exhaust gases passes of along continuous straight runs mobile and is the vertical direction double-current journey gas flue of turning back.
2. all welded type double fluid journey waved plate gas preheating device according to claim 1 is characterized in that described heat transferring plate lateral cross section and longitudinal cross-section are protruding, recessed alternate ripple.
3. all welded type double fluid journey waved plate gas preheating device according to claim 1, it is characterized in that unitary two groups of heat exchange unit modules of described first main heat exchange and the unitary two groups of heat exchange unit modules of second main heat exchange leave a determining deviation, have access opening on the second main heat exchange unit framework wall.
4. all welded type double fluid journey waved plate gas preheating device according to claim 1 is characterized in that described coal gas import and export loudspeaker, and flue gas import and export loudspeaker respectively connect case and each main heat exchange unit framework inboard all is coated with the pure aluminium silicate inside thermal conservation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201955854U CN201722400U (en) | 2010-05-17 | 2010-05-17 | All-welded double-flow gas preheater with corrugated plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201955854U CN201722400U (en) | 2010-05-17 | 2010-05-17 | All-welded double-flow gas preheater with corrugated plates |
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| Publication Number | Publication Date |
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| CN201722400U true CN201722400U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201955854U Expired - Lifetime CN201722400U (en) | 2010-05-17 | 2010-05-17 | All-welded double-flow gas preheater with corrugated plates |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236350A (en) * | 2014-09-25 | 2014-12-24 | 德艾柯工程技术（上海）有限公司 | Vertical type evaporator |
| CN104236349A (en) * | 2014-09-25 | 2014-12-24 | 德艾柯工程技术（上海）有限公司 | Gas-gas heat exchanger |
| CN105973043A (en) * | 2016-06-30 | 2016-09-28 | 广州捷玛换热设备有限公司 | High-temperature gas-gas heat exchanger |
| CN109737443A (en) * | 2018-12-18 | 2019-05-10 | 包头钢铁（集团）有限责任公司 | A method of improving gas preheater service life and efficiency |
| CN110455103A (en) * | 2019-08-29 | 2019-11-15 | 福建立信换热设备制造股份公司 | A kind of low abrasion plate type preheater |
| CN110982976A (en) * | 2020-01-06 | 2020-04-10 | 宝钢湛江钢铁有限公司 | Plate type gas-gas heat exchanger |
-
2010
- 2010-05-17 CN CN2010201955854U patent/CN201722400U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236350A (en) * | 2014-09-25 | 2014-12-24 | 德艾柯工程技术（上海）有限公司 | Vertical type evaporator |
| CN104236349A (en) * | 2014-09-25 | 2014-12-24 | 德艾柯工程技术（上海）有限公司 | Gas-gas heat exchanger |
| CN105973043A (en) * | 2016-06-30 | 2016-09-28 | 广州捷玛换热设备有限公司 | High-temperature gas-gas heat exchanger |
| CN109737443A (en) * | 2018-12-18 | 2019-05-10 | 包头钢铁（集团）有限责任公司 | A method of improving gas preheater service life and efficiency |
| CN110455103A (en) * | 2019-08-29 | 2019-11-15 | 福建立信换热设备制造股份公司 | A kind of low abrasion plate type preheater |
| CN110982976A (en) * | 2020-01-06 | 2020-04-10 | 宝钢湛江钢铁有限公司 | Plate type gas-gas heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180425 Address after: 201611 Workshop 14, Lane 38, South Yao Road, Che Dun Town, Songjiang District, Shanghai Patentee after: Shanghai Industrial Equipment Co., Ltd. Address before: No. 558 Xinqiao Road, Xinqiao Town, Songjiang District, Shanghai City, Shanghai Patentee before: Shanghai Lalleen Engineering Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
|
| CX01 | Expiry of patent term |