CN108534588A - Technique is taken over and its is realized in a kind of stretching of expansion-joint type clip - Google Patents
Technique is taken over and its is realized in a kind of stretching of expansion-joint type clip Download PDFInfo
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- CN108534588A CN108534588A CN201810330335.8A CN201810330335A CN108534588A CN 108534588 A CN108534588 A CN 108534588A CN 201810330335 A CN201810330335 A CN 201810330335A CN 108534588 A CN108534588 A CN 108534588A
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- bottom end
- take over
- over
- boss
- flange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of stretchings of expansion-joint type clip to take over and its two kinds of stretch forming process.Using stainless steel materials stretch forming process include stock, continuous stretching die stretch plank, top is taken in edger trimming, finish-milling takes over bottom end, rough mill take over top, spinning mold forming, flange die flange takes over bottom end, bottom end is taken in milling, cleaning expanded joint at, expanded joint, quality inspection process.Using stainless steel pipe stretch forming process includes stock, spinning mold forming, flange die flange take over bottom end, bottom end is taken in milling, flange die flange takes over top, top is taken in edger trimming, is cleaned at expanded joint, expanded joint, quality inspection process.The present invention, which has many advantages, such as to simplify, to be taken over more particularly to the processing technology with the stainless joint of clip butt welding, and raw material and mach cost are significantly reduced.
Description
Technical field
The present invention relates to a kind of taking over by new process processing, more particularly to the stainless joint with clip butt welding, applications
In on brazing plate type heat exchanger, main feature is a simplified the processing technology taken over, and significantly reduces raw material and machining
Cost.
Background technology
Plate heat exchanger is that liquid-liquid, liquid-vapour carry out the ideal equipment of heat exchange, high with heat exchanger effectiveness,
The series of advantages such as heat loss is small, advantages of compact and light structure, small, the service life length of floor space, thus be widely used in it is metallurgical,
The departments such as mine, oil, chemical industry, electric power, medicine, food, chemical fibre, papermaking, light textile, ship, heat supply.Also, it can be used for adding
The various situations such as heat, cooling, evaporation, condensation, sterilizing, waste heat recovery.Plate heat exchanger mainly has detachable and welding
Formula two major classes, in comparison, welding type heat exchanger have many advantages, such as to hold that temperature, bearing capacity are strong, and resistance to corrosion is good, thus weld
Formula heat exchanger use scope is more extensive.
Welding type heat exchanger can be divided into half welding type heat exchanger, full welding type heat exchanger, plate visitor's formula heat exchanger, brazing sheet again
Formula heat exchanger.Since soldering has, heating temperature is relatively low, connector is smooth, tissue and mechanical performance change small, workpiece size
The advantages that accurate, brazing plate type heat exchanger can be used as condenser and evaporator in refrigeration industry, can be used as alcohol in chemical industry
The operating temperature range of cooler ... the pricker welded type heat exchanger of fermentation etc. is -160 DEG C~+225 DEG C, and working pressure range is
0.01MPa~3.2MPa.
Have inlet and outlet on pricker welded type heat exchanger, frequently with welding or expanded joint mode by its with take over one end phase
Connection, the take over other end is with external water inlet pipe, outlet pipe frequently with welding or clamp connection.It is used on existing brazing plate type heat exchanger
Take over and be mostly processed on numerically controlled lathe by tubing or solid round steel, and clip is all and welding take over butt welding
Together；For bigbore welded pipe, a large amount of material can not only be wasted using above-mentioned traditional processing method, processed
Cost is also special height.Therefore, a kind of in the case where ensureing that the normal uses such as take over intensity require there is an urgent need for proposing, what is more simplified connects
Pipe processing technique, to reduce raw material and mach cost.
Invention content
The technical problem to be solved in the present invention is, for taking over using tubing on traditional brazing plate type heat exchanger
Or solid round steel is processed on numerically controlled lathe, and due to clip all with take over to being welded together, for heavy caliber
Welded pipe processing when can waste a large amount of material, the shortcomings of processing cost is also special height, and processing technology is cumbersome, carries
Go out two kinds of take over stretch forming process for more simplifying and greatly reducing processing cost.
The present invention solves the above problems designed take over material as stainless steel, has taken over top and bottom end and has distinguished, both ends
All it is flanging type boss, top is heavy caliber flange boss, and bottom end is small-bore flange boss, and the outer diameter of take over bottom boss
With depth dimensions at brazing plate type heat exchanger water-in and water-out nozzle counterbore it is equal sized, the two is connected using expanded joint mode.
Preferably, above-mentioned take over bottom boss outside diameter size range of taking over is 14~32mm, diameter of bore size model
It encloses for 10~28mm, boss thickness ranging from 1~3mm；
Preferably, it is 16~35mm to take over stage casing diameter of bore size range；
Preferably, above-mentioned connecting pipe length size range is 20~40mm；
Preferably, above-mentioned to take over top boss and take over bottom boss and identical, size range 1 of taking over stage casing wall thickness
~3mm.
Above-mentioned top of taking over is machined with boss structure, when external water pipe with take over connect using clamping hoop type when, take over top
Boss is linked together with clip by way of butt welding, take over the outer diameter of top boss, thickness should be with selected card
Hoop standard size matches.
Preferably, top boss thickness ranging from 1~3mm is taken over, top boss outside diameter size range is taken over
For 40~60mm.
The present invention also proposes above-mentioned two taken over kind manufacturing process comprising step in detail below：
(1) plate processing technology process
Stock：Prepare the stainless steel materials of 3mm thickness；
Continuous stretching die stretches plank：It will be passed through shown in stainless steel materials such as Fig. 3 (a), (b), (c) using stretching die continuous
It is b=24mm to be stretched to hole size, and take over outside diameter is d=28mm；
Top is taken in edger trimming：The above-mentioned tubing obtained after continuously elongated cut as shown in Fig. 3 (d)
In cross cutting to taking over a diameter of a=51mm of top boss；
Finish-milling takes over bottom end：Finish-milling takes over top until it is c=2mm to take over top boss thickness；
It rough mills and takes over top：By finish-milling cross take over bottom end on the basis of, butt tube bottom end rough mill until meet takes over
Length is L=32mm, as shown in Fig. 3 (e)；
Spinning mold forming：By taking over by the spinning block rotary press modelling as shown in Fig. 3 (f) to taking over after above-mentioned Milling Machining
Length is e=21.5mm；
Flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling tubing bottom end carry out flange be molded to
Take over bottom boss diameter of bore is h=16mm, outside diameter g=20mm, obtains taking over as shown in Fig. 3 (g)；
Bottom end is taken in milling：End face milling is carried out to the tubing bottom end after above-mentioned processing, milling to take over bottom boss thickness is f=
2mm obtains taking over as shown in Fig. 3 (h)；
It cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint using organic solvent cleaning,
Remove grease, oxide, dust etc.；
Expanded joint：As shown in Figure 5：It will take over the bottom ends A annular convex platform to stretch into brazing plate type heat exchanger B interface tubesheet holes, use
Tube expander squeezes the pipe ends stretched into tubesheet holes, and pipe end is made to be plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, when
After taking out tube expander, tubesheet holes elastic shrinkage, tube sheet just generates certain jam-packed pressure with pipe way, is closely attached to together,
Achieve the purpose that sealing is fastenedly connected；
Quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are worn
It is inserted in each manufacturing process.
(2) tubular object extruding technical process
Stock：Preparation internal diameter is 24mm, and thickness 2mm, length is the stainless steel pipe of 60mm；
Spinning mold forming：Stainless steel pipe shown in Fig. 4 (a) is passed through by the spinning block as shown in Fig. 4 (b) using spinning block
Rotary press modelling to connecting pipe length is 50mm；
Flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling tubing bottom end carry out flange be molded to
Take over bottom boss diameter of bore is h=16mm, outside diameter g=20mm, obtains taking over as shown in Fig. 4 (c)；
Bottom end is taken in milling：End face milling is carried out to the bottom end of taking over after above-mentioned processing, milling to take over bottom boss thickness is f=
2mm, as shown in Fig. 4 (d)；
Flange die flange takes over top：The top of taking over of above-mentioned processing is passed through by the flange as shown in Fig. 4 (e) using flange die
It is e=21.5mm to connecting pipe length；
Top is taken in edger trimming：The above-mentioned tubing obtained after flange die flange is carried out as shown in Fig. 4 (f)
Edger trimming is a=51mm to top boss outside diameter is taken over；
It cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint using organic solvent cleaning,
Remove grease, oxide, dust etc.；
Expanded joint：As shown in Figure 5：It will take over the bottom ends A annular convex platform to stretch into brazing plate type heat exchanger B interface tubesheet holes, use
Tube expander squeezes the pipe ends stretched into tubesheet holes, and pipe end is made to be plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, when
After taking out tube expander, tubesheet holes elastic shrinkage, tube sheet just generates certain jam-packed pressure with pipe way, is closely attached to together,
Achieve the purpose that sealing is fastenedly connected；
Quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are worn
It is inserted in each manufacturing process.
For taking the above-mentioned stretching manufactured by present invention process to take over, vibration-testing experiment has been carried out.As shown in Figure 6
Schematic diagram is tested for vibration-testing, A is pricker welded type heat exchanger, and B takes over to be above-mentioned, and C is clip, and D is external water pipe, and E is vibration
Testing stand, F are water pipe fixture.Bottom end is first will take over before experiment to connect with brazing plate type heat exchanger interface tubesheet holes progress expanded joint,
Top be will take over again with external water pipe and clip to being welded together, be used in combination clip to clamp, and fill 20kg compressed airs and carry out pressurize.
Then heat exchanger pedestal is bolted fixed on vibration mechine, while external water pipe is fixed on fixture.It surveys
Strip part：Vibration frequency is 30HZ, acceleration 10G, amplitude 5mm.After test result display vibration continues 500 hours, connect
Pipe No leakage shows that intensity and Fatigue Vibration fully meet requirement after vibration-testing.
Compared with the prior art, the advantages of the present invention are as follows：
It functionally will take over clip collection together in one, compared to traditional 1. the stretching of expansion-joint type clip is taken in the present invention
Joint pipe structure greatly simplifies, thus material cost substantially reduces.
It butt welding mode can be used connect clip with taking over 2. the stretching of expansion-joint type clip is taken in the present invention, two take over butt welding
Afterwards again by clip sealed clamping, system stability is good, and easy to maintenance.
3. expansion-joint type clip stretching tube can realize that process is relatively simple by plate stretch technique in the present invention, batch is raw
It produces at low cost.
4. expansion-joint type clip stretching tube also can realize that process is few by tubing flange, spinning process in the present invention, batch
It is high to measure production efficiency.
5. expansion-joint type clip stretching tube is 30HZ in vibration frequency in the present invention, acceleration 10G, amplitude is the item of 5mm
Continue 500h No leakages under part, thus product strength, antifatigue vibration performance are high.
6. expansion-joint type clip stretching tube is connect with brazing plate type heat exchanger interface tubesheet holes by expanded joint mode in the present invention,
The technological operation is simple, low cost, and since expanded joint intensity is small, just with maintenance.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention, and wherein A is brazing plate type heat exchanger, B is to stretch to take over.
Fig. 2 is that the half sectional view taken over is stretched in the present invention.
Fig. 3 is with sheet fabrication in the present invention into technical process schematic diagram when taking over.
Fig. 4 is with tubular object extruding in the present invention into technical process schematic diagram when taking over.
Fig. 5 is that the assembling schematic diagram taken over when carrying out expanded joint with brazing plate type heat exchanger interface is stretched in the present invention.
Fig. 6 is that take over vibration-testing tests schematic diagram in the present invention.
Specific embodiment
Below in conjunction with attached drawing, present invention is further described in detail.
The present invention proposes that a kind of expansion-joint type clip stretching is taken over, and the specific technical solution taken is：
It is respectively brazing plate type heat exchanger A and take over B from left to right, as shown in Figure 1.Described take over is drawn into use
The stainless steel tube that type technique is manufactured into.Top and the bottom end taken over is distinguished, and both ends are all flanging type boss, and top is big mouth
Diameter flange boss, bottom end are small-bore flange boss, and size is as shown in Figure 2：Top is taken over, with clip to being welded together,
Its outer diameter is to be matched with selected clip standard size, and it is a=51mm, endoporus to take over top flanging type boss outside diameter
A diameter of b=24mm, thickness c=2mm；It is small-bore annular convex platform, outside diameter g=20mm, endoporus to take over bottom end
A diameter of h=16mm, bottom boss thickness are f=2mm, are machined with and connect at brazing plate type heat exchanger water-in and water-out nozzle
The counterbore for the bottom boss corresponding size taken over, counter bore hole diameters 20mm, counterbore depth are 2mm；It is d=to take over stage casing outer diameter
28mm；Connecting pipe length is e=21.5mm.
Above-mentioned take over is connect with brazing plate type heat exchanger using expanded joint mode, and when assembly is as shown in Figure 5：It will take over the bottom ends A
Annular convex platform stretches into brazing plate type heat exchanger B interface tubesheet holes, and the pipe ends stretched into tubesheet holes are squeezed with tube expander, are made
Pipe end is plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, after taking out tube expander, tubesheet holes elastic shrinkage, tube sheet with
Pipe way just generates certain jam-packed pressure, is closely attached to together, achieve the purpose that sealing is fastenedly connected.
The present invention also proposes above-mentioned two taken over kind manufacturing process comprising step in detail below：
(1) plate processing technology process
Stock：Prepare the stainless steel materials of 3mm thickness；
Continuous stretching die stretches plank：It will be passed through shown in stainless steel materials such as Fig. 3 (a), (b), (c) using stretching die continuous
It is b=24mm to be stretched to hole size, and take over outside diameter is d=28mm；
Top is taken in edger trimming：The above-mentioned tubing obtained after continuously elongated cut as shown in Fig. 3 (d)
In cross cutting to taking over a diameter of a=51mm of top boss；
Finish-milling takes over bottom end：Finish-milling takes over top until it is c=2mm to take over top boss thickness；
It rough mills and takes over top：By finish-milling cross take over bottom end on the basis of, butt tube bottom end rough mill until meet takes over
Length is L=32mm, as shown in Fig. 3 (e)；
Spinning mold forming：By taking over by the spinning block rotary press modelling as shown in Fig. 3 (f) to taking over after above-mentioned Milling Machining
Length is e=21.5mm；
Flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling tubing bottom end carry out flange be molded to
Take over bottom boss diameter of bore is h=16mm, outside diameter g=20mm, obtains taking over as shown in Fig. 3 (g)；
Bottom end is taken in milling：End face milling is carried out to the tubing bottom end after above-mentioned processing, milling to take over bottom boss thickness is f=
2mm obtains taking over as shown in Fig. 3 (h)；
It cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint using organic solvent cleaning,
Remove grease, oxide, dust etc.；
Expanded joint：As shown in Figure 5：It will take over the bottom ends A annular convex platform to stretch into brazing plate type heat exchanger B interface tubesheet holes, use
Tube expander squeezes the pipe ends stretched into tubesheet holes, and pipe end is made to be plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, when
After taking out tube expander, tubesheet holes elastic shrinkage, tube sheet just generates certain jam-packed pressure with pipe way, is closely attached to together,
Achieve the purpose that sealing is fastenedly connected；
Quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are worn
It is inserted in each manufacturing process.
(2) tubular object extruding technical process
Stock：Preparation internal diameter is 24mm, and thickness 2mm, length is the stainless steel pipe of 60mm；
Spinning mold forming：Stainless steel pipe shown in Fig. 4 (a) is passed through by the spinning block as shown in Fig. 4 (b) using spinning block
Rotary press modelling to connecting pipe length is 50mm；
Flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling tubing bottom end carry out flange be molded to
Take over bottom boss diameter of bore is h=16mm, outside diameter g=20mm, obtains taking over as shown in Fig. 4 (c)；
Bottom end is taken in milling：End face milling is carried out to the bottom end of taking over after above-mentioned processing, milling to take over bottom boss thickness is f=
2mm, as shown in Fig. 4 (d)；
Flange die flange takes over top：The top of taking over of above-mentioned processing is passed through by the flange as shown in Fig. 4 (e) using flange die
It is e=21.5mm to connecting pipe length；
Top is taken in edger trimming：The above-mentioned tubing obtained after flange die flange is carried out as shown in Fig. 4 (f)
Edger trimming is a=51mm to top boss outside diameter is taken over；
It cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint using organic solvent cleaning,
Remove grease, oxide, dust etc.；
Expanded joint：As shown in Figure 5：It will take over the bottom ends A annular convex platform to stretch into brazing plate type heat exchanger B interface tubesheet holes, use
Tube expander squeezes the pipe ends stretched into tubesheet holes, and pipe end is made to be plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, when
After taking out tube expander, tubesheet holes elastic shrinkage, tube sheet just generates certain jam-packed pressure with pipe way, is closely attached to together,
Achieve the purpose that sealing is fastenedly connected；
Quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are worn
It is inserted in each manufacturing process.
For taking the above-mentioned stretching manufactured by present invention process to take over, vibration-testing experiment has been carried out.As shown in Figure 6
Schematic diagram is tested for vibration-testing, A is pricker welded type heat exchanger, and B takes over to be above-mentioned, and C is clip, and D is external water pipe, and E is vibration
Testing stand, F are water pipe fixture.Bottom end is first will take over before experiment to connect with brazing plate type heat exchanger interface tubesheet holes progress expanded joint,
Top be will take over again with external water pipe and clip to being welded together, be used in combination clip to clamp, and fill 20kg compressed airs and carry out pressurize.
Then heat exchanger pedestal is bolted fixed on vibration mechine, while external water pipe is fixed on fixture.It surveys
Strip part：Vibration frequency is 30HZ, acceleration 10G, amplitude 5mm.After test result display vibration continues 500 hours, connect
Pipe No leakage shows that intensity and Fatigue Vibration fully meet requirement after vibration-testing.
The foregoing is merely illustrative of the preferred embodiments of the present invention, and those skilled in the art know, is not departing from the present invention
Spirit and scope in the case of, various changes or equivalent replacement can be carried out to these features and embodiment.In addition, in this hair
Under bright introduction, it can modify to these features and embodiment to adapt to particular situation and material without departing from this hair
Bright spirit and scope.Therefore, the present invention is not limited to the particular embodiment disclosed, the power of fallen with the application
Embodiment in sharp claimed range belongs to protection scope of the present invention.
Claims (5)
1. a kind of expansion-joint type clip stretching is taken over, it is characterised in that：It is described to take over using stainless steel materials or drawing pipe molding
Technique；Above-mentioned top boss of taking over is connected with clip by butt welding mode；Above-mentioned take over bottom boss and brazing plate type heat exchanger
Interface tubesheet holes is connected using expanded joint mode.
2. a kind of expansion-joint type clip stretching according to claim 1 is taken over, it is characterised in that：Top and bottom end area are taken over
Point, both ends are all flanging type boss, and top is heavy caliber flange boss, and bottom end is small-bore flange boss；Take over top flange
Formula boss outside diameter size range is 40~60mm, and diameter of bore size range is 16~35mm, bore depth size range
For 16~38mm, boss thickness ranging from 1~3mm；Take over bottom boss outside diameter size range is 14~32mm, interior
Bore dia size range is 10~28mm, and boss thickness ranging from 1~3mm, bottom boss endoporus is through-hole, in brazing sheet
The counterbore with the bottom boss corresponding size of institute connecting tubes is machined at formula heat exchanger water-in and water-out nozzle；Connecting pipe length size
Ranging from 16~40mm；Take over stage casing wall thickness dimension ranging from 1~3mm；It takes over top boss and take over bottom boss and connects
Pipe stage casing wall thickness is identical.
3. a kind of expansion-joint type clip stretching according to claim 1 is taken over, it is characterised in that：Top is taken over clip to pass through
Butt welding links together, and takes over the outer diameter of top boss, thickness should be matched with selected clip standard size.
4. a kind of expansion-joint type clip as described in claim 1 stretches the manufacturing method taken over, it is characterised in that：The method packet
Include following steps：
(1) it stocks up：Prepare the stainless steel materials of corresponding size；
(2) continuous stretching die stretches plank：Use stretching die by stainless steel materials by it is continuously elongated to diameter of bore for 16~
35mm, take over outside diameter are 17~38mm；
(3) top is taken in edger trimming：The above-mentioned tubing that is obtained after continuously elongated is subjected to edger trimming to taking over
Top boss outside diameter is 40~60mm；
(4) finish-milling takes over bottom end：Finish-milling takes over top until it is 1~3mm to take over top boss thickness；
(5) it rough mills and takes over top：By finish-milling cross take over bottom end on the basis of, butt tube bottom end rough mill until meet take over length
It spends and adds 2~4mm that take over stage casing internal bore radius and short than target connecting pipe length；
(6) bottom end spinning mold forming is taken over：Bottom end will be taken over by spinning block rotary press modelling to take over length after above-mentioned Milling Machining
It is 16~40mm that degree, which is target connecting pipe length size,；
(7) flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling take over bottom end carry out flange be molded to
Take over bottom boss diameter of bore is 10~28mm, and outside diameter is 14~32mm；
(8) bottom end is taken in milling：To after above-mentioned processing take over bottom end carry out end face milling, milling to take over bottom boss thickness be 1~
3mm；
(9) it cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint, is gone using organic solvent cleaning
Except grease, oxide, dust etc.；
(10) expanded joint：It will take over bottom end annular convex platform to stretch into brazing plate type heat exchanger interface tubesheet holes, be stretched with tube expander extruding
Enter the pipe ends in tubesheet holes, pipe end is made to be plastically deformed, simultaneously flexible deformation occurs for tubesheet holes, when taking-up tube expander
Afterwards, tubesheet holes elastic shrinkage, tube sheet just generate certain jam-packed pressure with pipe way, are closely attached to together, it is tight to reach sealing
The purpose being solidly connected；
(11) quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are worn
It is inserted in each manufacturing process.
5. a kind of expansion-joint type clip as described in claim 1 stretches the manufacturing method taken over, it is characterised in that：The method packet
Include following steps：
(1) it stocks up：Prepare the stainless steel pipe of corresponding size；
(2) spinning mold forming：Using spinning block by stainless steel pipe bottom end by spinning block rotary press modelling to taking over bottom end varus
Edge lengths are smaller 2~4mm than pipe orifice radius length；
(3) flange die flange takes over bottom end：Using flange die by after above-mentioned rotary press modelling take over bottom end carry out flange be molded to
Take over bottom boss diameter of bore is 10~28mm, and outside diameter is 14~32mm；
(4) bottom end is taken in milling：End face milling is carried out to the take over bottom boss after above-mentioned processing, milling to take over bottom boss thickness is
1~3mm；
(5) flange die flange takes over top：Use flange die by above-mentioned processing take over top by flange to connecting pipe length for
16~40mm；
(6) top is taken in edger trimming：The above-mentioned top of taking over obtained after flange die flange is subjected to edger trimming
It is 40~60mm to top boss outside diameter is taken over；
(7) it cleans at expanded joint：It is taken at bottom end and brazing plate type heat exchanger interface tubesheet holes expanded joint, is gone using organic solvent cleaning
Except grease, oxide, dust etc.；
(8) expanded joint：It will take over bottom end annular convex platform to stretch into brazing plate type heat exchanger interface tubesheet holes, be stretched into tube expander extruding
Pipe ends in tubesheet holes, make pipe end be plastically deformed, and simultaneously flexible deformation occurs for tubesheet holes, after taking out tube expander,
Tubesheet holes elastic shrinkage, tube sheet just generate certain jam-packed pressure with pipe way, are closely attached to together, reach sealing fastening and connect
The purpose connect；
(9) quality inspection：By national standard or professional standard or company standard to above-mentioned take over carry out quality examination.Quality inspection links are interspersed
In each manufacturing process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018102458578 | 2018-03-23 | ||
| CN201810245857 | 2018-03-23 |
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| Publication Number | Publication Date |
|---|---|
| CN108534588A true CN108534588A (en) | 2018-09-14 |
| CN108534588B CN108534588B (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810330335.8A Active CN108534588B (en) | 2018-03-23 | 2018-04-13 | A kind of expansion-joint type clip stretches adapter tube and its realizes technique |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0449377A1 (en) * | 1990-03-26 | 1991-10-02 | Ferro Techniek B.V. | Method for welding enamelled metal objects and the obtained product |
| CN105855654A (en) * | 2015-01-19 | 2016-08-17 | 浙江三花制冷集团有限公司 | Gas-liquid separator and connecting pipe welding assembly |
| CN205784806U (en) * | 2016-05-30 | 2016-12-07 | 兰州兰石集团有限公司 | The attachment structure of heat-exchangers of the plate type titanium material adapter |
-
2018
- 2018-04-13 CN CN201810330335.8A patent/CN108534588B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0449377A1 (en) * | 1990-03-26 | 1991-10-02 | Ferro Techniek B.V. | Method for welding enamelled metal objects and the obtained product |
| CN105855654A (en) * | 2015-01-19 | 2016-08-17 | 浙江三花制冷集团有限公司 | Gas-liquid separator and connecting pipe welding assembly |
| CN205784806U (en) * | 2016-05-30 | 2016-12-07 | 兰州兰石集团有限公司 | The attachment structure of heat-exchangers of the plate type titanium material adapter |
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| Publication number | Publication date |
|---|---|
| CN108534588B (en) | 2019-08-16 |
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