CN202451282U - Small efficient reheater - Google Patents
Small efficient reheater Download PDFInfo
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- CN202451282U CN202451282U CN2011205313733U CN201120531373U CN202451282U CN 202451282 U CN202451282 U CN 202451282U CN 2011205313733 U CN2011205313733 U CN 2011205313733U CN 201120531373 U CN201120531373 U CN 201120531373U CN 202451282 U CN202451282 U CN 202451282U
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Abstract
The utility model discloses a small efficient reheater. The small efficient reheater comprises a joint, an inner wall and a heat exchange core assembly, wherein the heat exchange core assembly is formed by punching and intensively installing and welding a plurality of cooling fin units. After the technical scheme is adopted, the small efficient reheater has the technical advantage of being easy to process. Besides, according to the technical scheme, the small efficient reheater has good application effect in practice.
Description
Technical field
The utility model belongs to mechanical engineering gas turbine regenerator manufacturing technology, relates to the punching press of stainless steel foil band radiating fin, moulding welding technique.
Background technique
Regenerator is a kind of gas-gas type heat exchanger, can realize the backheat circulation, is installed in usually on the gas turbine (hereinafter to be referred as the combustion machine); To get into the firing chamber then, like this from the air heating of gas compressor; The preheating that absorbs is ability instead of part fuel just; Reach and improve the combustion machine thermal efficiency, fuel saving consumption improves the purpose of Economy.
Regenerator can be divided into two types of surface-type and regenerative; The surface-type regenerator can be divided into tubular type, board-like, plate and fin type and several kinds of different structures of original surface formula (New-type plate) again, and what can be used in small-sized combustion machine has rotary generative regenerator, plate and fin type and three kinds of structures of original surface formula.
Small-sized combustion machine is meant that power is the combustion machine below the 2000kW; According to combustion machine characteristics; Can be divided into below the 200kW again; 200-500kW, above three shelves of 500kW, the efficient regenerator of the original surface formula (New-type plate) that the utility model is discussed is mounted in the regenerator of using in 30kW miniature gas turbine power station (being called for short little power station regenerator).
Original surface type heat regenerator is a kind of novel compact efficient regenerator with space heat transfer curved surface that grows up the eighties; Compare with the plate and fin type regenerator; The main distinction is that it conducts heat through a heating surface; Like there not being dividing plate, amass the regenerator of building the plate and fin type that forms near fin on the structure.This regenerator has the efficient heat transfer surface, and the heat transfer area of per unit volume is bigger, reaches 3000m2/m3 approximately, and in light weight, volume is little, and maintenance is convenient, and regenerator effectiveness is high, can reach more than 90% working pressure 0.6MPa, 620 ℃ of operating temperatures.Its shortcoming is owing to diameter in the high regenerator effectiveness requirement runner water is little, requires mother metal very thin, less than 0.1mm; The production difficulty is big, expensive, and the template bus is space curve; The punching out difficulty is also big, and crushing is big, more is prone to stop up; Runner is imported and exported difficulty of interface section Design and Machining simultaneously, the domestic producer that produces this type of regenerator that do not find as yet.
The effect of regenerator mainly is to estimate from the angle of effective utilization of the energy and Economy; It can be a part of heat of high-temperature gas (500～650 ℃) of combustion machine discharging; Reclaim to process gas compressor air compressed and get into the firing chamber, thereby energy saving reduces and pollutes.Main is the thermal efficiency that can improve the combustion machine, reduces fuel consumption.
But the flow channel shape of existing regenerator and the material of radiating fin, thickness are various, and its effect is also had nothing in common with each other.
The model utility content
The utility model is directed against existing technology shortcoming really, and a kind of small-sized efficient regenerator is provided, and said regenerator has the advantage of easy processing.
It is following that the utility model solves the problems of the technologies described above the concrete technological scheme of being taked:
A kind of small-sized efficient regenerator comprises: joint, inwall and heat exchange core assembly, said heat exchange core assembly is formed by a plurality of fin unit punch formings and intensive assembly welding.
Further, preferred construction is, said fin unit by strip of paper used for sealing assembly, CW type corrugated sheet and guide plate respectively assembly welding form, wherein, said CW type corrugated sheet comprises intaglio plate and relief printing plate, and said CW type corrugated sheet thickness is 0.1mm.
Further, preferred construction is that said heat-sink unit is provided with 168 heat-sink units; Wherein, Said intaglio plate and relief printing plate CW type corrugated sheet are respectively equipped with 168, and wherein, the interior strip of paper used for sealing assembly in the said strip of paper used for sealing assembly, interior strip of paper used for sealing, last strip of paper used for sealing edge strip, following strip of paper used for sealing edge strip respectively are provided with 168; In addition, said guide plate is provided with 672.
The utility model has been taked after the technique scheme, has the technological merit of easy processing, and this scheme has effect preferably among practice.
Description of drawings
Below in conjunction with accompanying drawing the utility model is carried out detailed description, so that the above-mentioned advantage of the utility model is clearer and more definite.
Fig. 1 is the structural representation of a kind of small-sized efficient regenerator of the utility model;
Fig. 2 is the schematic representation of the press tool of the CW type corrugated sheet among the utility model;
Fig. 3 is the method schematic representation of the microbeam argon arc welding among the utility model;
Fig. 4 is the method schematic representation of the microbeam argon arc welding among the utility model;
Embodiment
Wherein, Fig. 1 is the structural representation of a kind of small-sized efficient regenerator of the utility model; As shown in the figure, said small-sized efficient regenerator comprises: joint, inwall and heat exchange core assembly, said heat exchange core assembly is formed by a plurality of fin unit punch formings and intensive assembly welding.
Wherein, said fin unit by strip of paper used for sealing assembly, CW type corrugated sheet and guide plate respectively assembly welding form, wherein, said CW type corrugated sheet comprises intaglio plate and relief printing plate, and said CW type corrugated sheet thickness is 0.1mm.
And said heat-sink unit is provided with 168 heat-sink units, wherein; Said intaglio plate and relief printing plate CW type corrugated sheet are respectively equipped with 168, and wherein, the interior strip of paper used for sealing assembly in the said strip of paper used for sealing assembly, interior strip of paper used for sealing, last strip of paper used for sealing edge strip, following strip of paper used for sealing edge strip respectively are provided with 168; In addition, said guide plate is provided with 672.
Further, according to the utility model, the CW type corrugated sheet that the utility model is taked is a kind of novel compact efficient radiating fin with space heat transfer curved surface; Other is to conduct heat through CW type corrugated sheet surface; Do not have dividing plate on the structure, only depend on corrugated sheet and strip of paper used for sealing to form regenerator, have the efficient heat transfer surface; The heat transfer area of per unit volume is maximum, and is in light weight, volume is little, heat radiation degree height.
But, in the existing technology, because the special construction requirement of itself; Regenerator effectiveness requires Flow diameter little, requires mother metal thin, and the production difficulty is big; Expensive, CW type corrugated sheet is 0.1mm, bus is space curve; Because of depth scale can't be realized with rolling depression method greatly,, also can't realize with mold pressing because of structural feature is that curve stretches.
Demonstration and the test a large amount of according to claimant's process are finally confirmed to adopt the pressing lap mode to realize, wherein, because the template bus is space curve, the punching out difficulty is big, more is prone to drawing crack, and crushing is big, and the while stamping Die Design is complicated, maintenance difficult, and die life is short.The external manufacturer of this CW type corrugated sheet is few, is domesticly still exploring.
Wherein, The claimant is through test of many times; Design punching template shown in Figure 2, comprising: move formpiston 21, decide formpiston 23 and upper punch 22, low punch 24 and former 25; Wherein, when designing mould, to consider: mold design structure, die material, life-span, maintenance, the workability of mould itself, Economy.
For example, in the selection of die material, owing to can satisfy hardness requirement with general mould material Cr12, CrWMn, but toughness is poor, bursts easily during work or loses, and die life is short.
Therefore, model utility people selected 65Mn that uses behind overtesting.And carry out hardness test and confirm HRC43-45, this material is difficult for bursting, lose, being out of shape in stamping process, can reach the requirement of hardness, toughness.
In addition, on the mould mechanical processing technique, but owing to ability machining (first machinery is processed again, and the heat treatment meeting deforms) after formpiston and the drift heat treatment.Because of hardness height, the high machining center of precision, Carving Machining method can't satisfy technical requirements.Therefore, must carry out split machining, by molybdenum wire cutting carrying out split processing, it is thick that drift thickness is merely 0.8mm.Fastening piece can not be assembled.As weld to be prone to produce and be out of shape, drift can not keep in repair after damaging, and can only scrap formpiston and drift.
In an embodiment, it is bonding with epoxy resin formpiston and drift to be carried out the high pressure anchor clamps, and bonding strength can satisfy job requirement through overtesting.When maintenance, can dismantle through high temperature, easy to maintenance, good economy performance.
In addition, but machining just after the former heat treatment.Because of hardness is high, precision is high, it is thick that drift thickness is merely 0.4mm.Machining center, Carving Machining method can't satisfy technical requirements, can't carry out integral body processing.
And formpiston is split as force block and low punch, assembles after machining.Pour into a mould fixing, soft mode with top board, low-melting alloy and press location, gap, cutting, sandblast chamfering.
The utility model adopts above technology to solve the difficult point in the course of working, and mould has been identified the rationality of stamping Die Design through use, and the mould low punch life-span can reach about 15000 times, and upper punch can reach about 50000 times.Mold repair is convenient, economical, meets project demand.
In addition, regenerator is by 168 good unit blocks of assembly welding, and wall is arranged by the involute mode outer tube, carries out gang welding thereupon, and totally 2022 part assembly weldings together.
At present; The home and abroad all encounters a difficulty in welding regenerator process; Because radiating fin too thin (only 0.1mm); Nearly 1011 of weld seams comprise that advanced electron beam welding, laser beam welding, vacuum brazing, argon arc welding, ultrasonic welding, energy storage seam weld and all can not accomplish weld seam under this structure, do not have good solution.
Main microbeam argon arc welding, the reservation surplus method composite welding process of adopting in the utility model scheme.Wherein, Fig. 3 and Fig. 4 are the method schematic representation of the microbeam argon arc welding among the utility model.Wherein, among Fig. 3, comprising: corrugated sheet 31, clamping lever 32, locating support 33, clamp 34 and following strip of paper used for sealing filler strip 35.
The concrete steps that below are directed against an embodiment of the utility model describe, and wherein, said step specifically comprises:
Step 1, compacting CW type corrugated sheet: choosing thickness is the stainless steel foil 0Cr18Ni11Nb of 0.1mm, is shaped to CW type corrugated sheet with die stamping, the oil hydraulic press tonnage: 200 tons.Stroke is not limit.
Step 4, supporting, the part of assembly welding to join full regenerator.
Step 5, tack welding.
Wherein, tack welding content: strip of paper used for sealing filler strip under the spot welding.With alcohol wash and dry up filler strip.Sealing tape edge under filler strip and the corrugated sheet is alignd, and clamp, locate 6 points with reserve energy spot welding machine.
In step 5, wherein, welding content: corrugated sheet and lower sid strip, filler strip argon arc welding.
Specifically comprise: strip of paper used for sealing edge strip under the spot welding, two, one of one of following strip of paper used for sealing discal patch and interior strip of paper used for sealing assembly parts.One of bar assembly parts.It is also clamped, locate with the pulse welding machine.
Step 6, the microbeam argon arc welding, welding machine: TIG180, at the uniform velocity welding, background current: 50A, the gas time-delay: 10S, pulse is closed, and does not add welding wire during welding.
Step 7 flattens, and clamps with flat board, and 50 tons of press machinees flatten the assembly that welds.
Step 8, die mould is pressed into the design shape with specialized mould with part.50 tons of press machinees.
Step 9, the unit is suppressed, and to the heat-sink unit bulge test, pressure: 1MPa, pressurize 20 minutes.Allow twice of repair welding.
Step 9, assembly welding is an one with 168 fin unit assembly weldings.Adopt the microbeam argon arc welding.
Step 10, assembly is suppressed, and the regenerator of welding fabrication is placed on special fixture suppresses pressure: 1MPa pressurize 20 minutes.Do not allow the passage string to press external leakage.Shunting is even, and runner is unobstructed, and outward appearance is clean and tidy.
The utility model has been taked after the technique scheme, has the technological merit of easy processing, and; This scheme has effect preferably among practice; Through development test, accomplished the welding of regenerator finally, and through combustion machine installation examination; Reach the designing requirement performance fully, this technology has been filled up domestic blank.
It should be noted that; Above-mentioned specific embodiment only is exemplary; Under the above-mentioned instruction of the utility model, those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description, and these improve or distortion drops in the protection domain of the utility model.It will be understood by those skilled in the art that top specific descriptions just in order to explain the purpose of the utility model, are not to be used to limit the utility model.The protection domain of the utility model is limited claim and equivalent thereof.
Claims (3)
1. small-sized efficient regenerator, comprising: joint, inwall and heat exchange core assembly is characterized in that said heat exchange core assembly is formed by a plurality of fin unit punch formings and intensive assembly welding.
2. small-sized efficient regenerator according to claim 1; It is characterized in that, said fin unit by strip of paper used for sealing assembly, CW type corrugated sheet and guide plate respectively assembly welding form, wherein; Said CW type corrugated sheet comprises intaglio plate and relief printing plate, and said CW type corrugated sheet thickness is 0.1mm.
3. small-sized efficient regenerator according to claim 2 is characterized in that, said heat-sink unit is provided with 168 heat-sink units; Wherein, Said intaglio plate and relief printing plate CW type corrugated sheet are respectively equipped with 168, and wherein, the interior strip of paper used for sealing assembly in the said strip of paper used for sealing assembly, interior strip of paper used for sealing, last strip of paper used for sealing edge strip, following strip of paper used for sealing edge strip respectively are provided with 168; In addition, said guide plate is provided with 672.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205313733U CN202451282U (en) | 2011-12-15 | 2011-12-15 | Small efficient reheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205313733U CN202451282U (en) | 2011-12-15 | 2011-12-15 | Small efficient reheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451282U true CN202451282U (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205313733U Expired - Fee Related CN202451282U (en) | 2011-12-15 | 2011-12-15 | Small efficient reheater |
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| CN (1) | CN202451282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562308A (en) * | 2011-12-15 | 2012-07-11 | 西安远航真空钎焊技术有限公司 | Small efficient heat regenerator and manufacturing method thereof |
-
2011
- 2011-12-15 CN CN2011205313733U patent/CN202451282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562308A (en) * | 2011-12-15 | 2012-07-11 | 西安远航真空钎焊技术有限公司 | Small efficient heat regenerator and manufacturing method thereof |
| CN102562308B (en) * | 2011-12-15 | 2015-09-23 | 西安远航真空钎焊技术有限公司 | A kind of small efficient heat regenerator and manufacture method thereof |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20171215 |