CN105397396B - Welding method of the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe to device, jacket heat-exchanger and jacket pipe - Google Patents
Welding method of the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe to device, jacket heat-exchanger and jacket pipe Download PDFInfo
- Publication number
- CN105397396B CN105397396B CN201510923291.6A CN201510923291A CN105397396B CN 105397396 B CN105397396 B CN 105397396B CN 201510923291 A CN201510923291 A CN 201510923291A CN 105397396 B CN105397396 B CN 105397396B
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- Prior art keywords
- inner tube
- group
- jacket
- exchanger
- locator
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
Abstract
The invention discloses the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe to device, the welding method of jacket heat-exchanger and jacket pipe, the gapless group pair that the group is used for device between the inner tube of jacket pipe and the connection groove of its end coupling, its structure includes claw locator, rotating rod, locking nut and beat handle, one end of rotating rod wears the central axis of claw locator, and it is fixedly connected by bolt and nut, the other end of rotating rod sets and beats handle, it is spacing by locking nut to beat handle, the group uses device the inner side in chuck straight tube inner tube and connector groove, by group to device group pair, spot welding, solves the problems, such as the eccentric misalignment of pipe fitting during the two group pair, the concentricity of the two is controlled by controlling the linearity deviation of locator, the wrong variable of the two is controlled by controlling the outside diameter tolerance of locator；Group uses dismountable structure to device, simple readily removable；Group is all suitable for device recoverable, internal cast identical bushing type equipment.
Description
Technical field
The present invention relates to the group of the internally positioned shallower position of inner tube of the various chuck straight tubes in petrochemical equipment to skill
Welding method of the inner tube shallow bore hole weldering group of art, more particularly to jacket heat-exchanger jacket pipe to device, jacket heat-exchanger and jacket pipe.
Technical background
Rapid-cooling heat exchanger is the key equipment that manufacturability is very strong in ethylene cracker.It is out of breath from technique, cracking
Cold heat exchanger is broadly divided into one-level rapid-cooling heat exchanger and two level rapid-cooling heat exchanger, and three-level chilling is also used sometimes for gas raw material
Heat exchanger.
Bushing type rapid-cooling heat exchanger is typically in a row side by side by a plurality of sleeve pipe being made up of inner and outer pipe, and every sleeve pipe is outside
Inner and outer pipe is connected with upper and lower header by upper and lower connector at pipe both ends.Bushing type rapid-cooling heat exchanger mainly undertakes two
Function：One is 800 DEG C or so of Pintsch process gas is rapidly cooled to below secondary response temperature, olefin loss is reduced；Its
Second, reclaiming the high level heat of cracking gas as much as possible, 12.0MPa or so high steam is produced.Bushing type rapid-cooling heat exchanger
Tube side medium be HTHP cracking gas, and the weld seam of inner tube and connector, very close to cracking gas import, this is required
The weld seam of inner tube and connector has higher welding quality, just can guarantee that and will not be lacked after cracking gas enters equipment because of weld seam
Fall into and cause leakage so as to there is security incident, thus it is guaranteed that and it is highly important to improve the welding quality of this weld seam.
However, the quality of weld seam be unable to do without group pair and welding, when carrying out internal bore welding especially with interior U grooves, due to this
The manufacturing technology requirement that road weld seam is proposed by product design is after inner and outer pipe poling, first solder mask pipe, carries out inner sleeve afterwards
Welding, belong to sleeve pipe and close up seam, so cannot be directly viewed weld seam from outside, can only by the limited sighting distance in end come
Observation, the concentricity of inner tube and connector group pair directly influence welding quality with wrong variable, are bushing type rapid-cooling heat exchanger systems
A highly important ring during making.
To sum up, from source, invention is a kind of effectively to control inner tube and the concentricity of connector and wrong variable, for the road
The welding of weld seam provides best welding condition, has important engineering significance to improve the structures and methods of weldquality.
The content of the invention
An object of the present invention is to avoid weak point of the prior art and provide jacket heat-exchanger jacket pipe
Inner tube shallow bore hole weldering group adjusts the group of inner tube and end coupling to unfitness of butt joint and concentricity, for weldering by the group to device to device
Connect and best welding condition is provided, so as to control weldquality, ensure the quality of cracking gas entrance critical welding seams, prevent from setting
Standby leakage and its caused security incident.
The second object of the present invention is to avoid weak point of the prior art and provide jacket heat-exchanger, and the chuck changes
Device welding is connected using above-mentioned group between the inner tube of the jacket pipe of hot device and the connection groove of its end coupling.
The third object of the present invention be to avoid weak point of the prior art and provide jacket heat-exchanger jacket pipe with
The welding method of end coupling, it can ensure that by the welding method and provide best welding condition for welding, so as to control
Weldquality, ensure the quality of cracking gas entrance critical welding seams, prevent equipment leakage and its caused security incident, extend
The service life of jacket heat-exchanger.
The object above of the present invention is achieved through the following technical solutions respectively：
The inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe is provided to device, it is used for the interior of the jacket pipe of jacket heat-exchanger
Gapless group pair between the connection groove of pipe and its end coupling, described group includes claw locator, rotating rod, lock to device
Tight nut and handle is beaten, one end of the rotating rod wears the central axis of the claw locator and by bolt spiral shell
Mother is fixedly connected, and beats handle described in the other end setting of the rotating rod, the handle that beats passes through the locking nut
It is spacing.
Preferably, the claw locator includes the structure at least more than three-jaw, and the structure at least more than three-jaw
It is distributed along the even circumferential of the claw locator.
Preferably, the claw locator is three-jaw structure or four paws structure.
Preferably, the inside of the claw locator is arranged to hollow-core construction.
Preferably, the leading section of the claw locator is disposed as rounding corner structure with rearward end.
Preferably, the outer surface of the claw locator is provided with smooth abrasion-proof layer.
Preferably, it is described to beat band gap fit between handle and the rotating rod.
Jacket heat-exchanger, including the jacket pipe being made up of inner and outer tubes are additionally provided, and positioned at the jacket pipe two
The end coupling of end, wherein, by described above between the inner tube of the jacket pipe and the connection groove of its end coupling
Jacket heat-exchanger jacket pipe inner tube shallow bore hole weldering group to device welding connect.
The welding method of jacket heat-exchanger jacket pipe and end coupling is additionally provided, it comprises the following steps：
Step 1, after inner tube and outer tube poling, first weld the weld seam of end coupling and outer tube；
Step 2, the weld seam of above-mentioned end coupling and outer tube are carrying out the connection slope of inner tube and end coupling after welding
The welding of weld seam between mouthful；
The concrete operations of wherein step 2 are as follows：By the inner tube shallow bore hole weldering group pair of jacket heat-exchanger jacket pipe described above
Device fills in inner tube from the side of the weld seam between the connection groove of inner tube and end coupling, moves the group to the position of device extremely
Connect groove, position of the group to device is adjusted along before and after the central axial direction of inner tube, then rotate the group to the orientation of device so that
The pawl structure distribution of the claw locator is at the position without spot welding, and secondly, from the end of inner tube, adjustment welding gun stretches into inner tube,
Spot welding position is found accurately by illumination auxiliary device, then, uniformly spot welding is to reach group to point weldering on the circumference of connection groove, most
Afterwards, spot welding is completed, and is dismantled the group to device, is reused the weld seam connected between groove of welding gun completion inner tube and end coupling
Welding.
Preferably, the illumination auxiliary device is flashlight or camera.
Beneficial effects of the present invention：
For the inner tube shallow bore hole weldering group of the jacket heat-exchanger jacket pipe of the present invention to device, it is used for the jacket pipe of jacket heat-exchanger
Gapless group pair between the connection groove of inner tube and its end coupling, described group device is included claw locator, rotating rod,
Locking nut and handle is beaten, one end of the rotating rod wears the central axis of the claw locator and passes through bolt
Nut is fixedly connected, and beats handle described in the other end setting of the rotating rod, the handle that beats passes through the locking screw
It is female spacing.Compared with prior art, by group to device group to, spot welding, solve the inner tube of the jacket pipe of jacket heat-exchanger and its end
During the connection groove group pair of portion's connector the problem of the eccentric misalignment of pipe fitting, controlled by controlling the linearity deviation of locator
The concentricity of the two, control the wrong variable of the two by controlling the outside diameter tolerance of locator so that the present invention realizes inner tube
Between end coupling interior U grooves shallow bore hole weldering group pair and spot welding, solve the problems, such as shallow bore hole weldering from outside can not group to；It is real
Control of the group of the interior U grooves shallow bore hole weldering between inner tube and end coupling to parameter is showed, has efficiently controlled inner tube and connect with end
The group of fitting provides best welding condition to concentricity for welding；Realize the interior U grooves between inner tube and end coupling
Control of the group of shallow bore hole weldering to parameter, the group of inner tube and connector is efficiently controlled to unfitness of butt joint, is provided for welding best
Welding condition；The group realized between inner tube and end coupling plays positioning support and made to positioning, group to rear progress fixing point weldering
With, and the group is simple in construction to device, easy disassembly, recyclable recycling, and internally cast identical bushing type chilling
Heat exchange equipment is all suitable for, and application is extremely wide.
The jacket heat-exchanger of the present invention, including the jacket pipe being made up of inner and outer tubes, and positioned at the jacket pipe two
The end coupling of end, wherein, by described above between the inner tube of the jacket pipe and the connection groove of its end coupling
Jacket heat-exchanger jacket pipe inner tube shallow bore hole weldering group to device welding connect.So that the jacket heat-exchanger welding quality is good,
Service life extends.
The jacket heat-exchanger jacket pipe of the present invention and the welding method of end coupling, it includes first wearing inner tube and outer tube
Guan Hou, first weld the weld seam of end coupling and outer tube；After welding between the connection groove of inner tube and end coupling is carried out
The welding of weld seam；The method of this welding disclosure satisfy that the precondition of above-mentioned welding, equally with weldering described above
Connect the features such as method is simple, easy to operate, and the weldquality of welding is good.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is structural representation of the inner tube shallow bore hole weldering group to device of the jacket heat-exchanger jacket pipe of the present invention.
Fig. 2 is structural representation of the inner tube shallow bore hole weldering group to the claw locator of device of the jacket heat-exchanger jacket pipe of the present invention
Figure.
Include in fig. 1 and 2：
1 --- beat handle, 2 --- locking nut, 3 --- rotating rod, 4 --- claw locator,
The weld seam of A --- end coupling, B --- inner tube, C --- outer tube, D --- end coupling and outer tube,
Weld seam between the connection groove of H --- inner tube and end coupling, E --- top, F --- bottom.
Embodiment
Further detailed description is done to the embodiment of the present invention below in conjunction with the accompanying drawings：
It should be noted that：The jacket heat-exchanger that the present invention refers to can be rapid-cooling heat exchanger, and the jacket heat-exchanger is by more
Individual jacket pipe composition, so-called jacket pipe refers to the less pipe sleeve of overall diameter to enter inside the larger pipe of interior diameter has pipe in the pipe of composition
Structure.
Embodiment 1
For the inner tube shallow bore hole weldering group of the jacket heat-exchanger jacket pipe of the present invention to device, it is used for the jacket pipe of jacket heat-exchanger
Gapless group pair between inner tube B and its end coupling A connection groove, described group includes claw locator 4, rotation drawing to device
Bar 3, locking nut 2 and beat handle 1, one end of the rotating rod 3 wear the central axis of the claw locator 4 and
It is fixedly connected by bolt and nut, beats handle 1 described in the other end setting of the rotating rod 3, the handle 1 that beats passes through
The locking nut 2 is spacing.Group between the claw locator 4 and rotating rod 3 of device to using bolt and nut to connect so that the group
To device for can dismountable head, without being fixed in equipment, easily assembly and disassembly, it is simple and convenient, to device fabrication without it is any not
Good influence, while also allow for storage and carry.Compared with prior art, by group to device group to, spot welding, solve jacket heat-exchanger
Jacket pipe inner tube B and its end coupling A connection groove group pair when pipe fitting eccentric misalignment the problem of, it is fixed by controlling
The linearity deviation of position device controls the concentricity of the two, controls the wrong of the two to become by controlling the outside diameter tolerance of locator
Amount so that the present invention realizes group pair and the spot welding of the interior U grooves shallow bore hole weldering between inner tube B and end coupling A, solves shallow bore hole
Weldering from outside can not group to the problem of；The group of the interior U grooves shallow bore hole weldering between inner tube B and end coupling A is realized to parameter
Control, inner tube B and end coupling A group is efficiently controlled to concentricity, best welding condition is provided for welding；Realize
Control of the group of interior U grooves shallow bore hole weldering between inner tube B and end coupling A to parameter, efficiently controls inner tube B and connector
Group to unfitness of butt joint, provide best welding condition for welding；The group between inner tube B and end coupling A is realized to positioning,
Group plays positioning supporting role to rear progress fixing point weldering, and the group is simple in construction to device, easy disassembly, recyclable sharp again
With, and inner tube Type B identical bushing type rapid-cooling heat exchanger equipment is all suitable for, application is extremely wide.
The installation method of the present invention, after first assembling rotating rod 3 and claw locator 4 by bolt and nut, then it will strike
Hired roughneck's handle 1 is locked after being installed in place with locking nut 2, during dismounting, is first unclamped locking nut 2, then unclamps bolt and nut, is beaten
Handle 1 can be assembled and disassembled together with rotating rod 3.
Specifically, the claw locator 4 includes the structure at least more than three-jaw, and the structure at least more than three-jaw
It is distributed along the even circumferential of the claw locator 4.Claw locator 4 can use axially symmetric structure, can also use endless
Full axial symmetry structure.
Specifically, the claw locator 4 is three-jaw structure or four paws structure.The bottom of claw locator 4 uses three
Pawl or four paws structure, enough spaces can be provided for welding gun spot welding, its bottom three-jaw or four paws are circumferentially uniformly distributed, can be with
Facilitate group to rotate device, be not limited to the group pair in a direction.
Specifically, the inside of the claw locator 4 is arranged to hollow-core construction.The inside of claw locator 4 is using hollow
Structure, on the one hand in order to mitigate weight of the group to device, on the other hand device is extracted out after use also for solution group and is stranded
The problem of difficult.
Specifically, the leading section of the claw locator 4 is disposed as rounding corner structure with rearward end.Claw locator 4
Top E and bottom F end carry out rounding slide angle, facilitate group into and out of inner tube B, to prevent group from being scraped to device to inner tube B device
Wound.
Specifically, the outer surface of the claw locator 4 is provided with smooth abrasion-proof layer.For the appearance of claw locator 4
Surface roughness requires smooth abrasion-proof, facilitates group to device into and out of inner tube B, while prevent group to device to inner tube B scratches.
Specifically, described beat band gap fit between handle 1 and the rotating rod 3.Beat handle 1 and rotating rod
Gap fit is used between 3 so that without that using the effect of other external force group can be made into and out of inner tube B, to prevent device device group
The effect of other external force is uneven to cause inner tube B to damage or can not take out situation generation of the group to device.
Embodiment 2
The jacket heat-exchanger of the present invention, including the jacket pipe being made up of inner tube B and outer tube C, and positioned at the jacket pipe
The end coupling A at both ends, wherein, by above-mentioned between the inner tube B and its end coupling A of the jacket pipe connection groove
The inner tube shallow bore hole weldering group of described jacket heat-exchanger jacket pipe connects to device welding.So that the jacket heat-exchanger welding quality
Good, service life extends.
Embodiment 3
The jacket heat-exchanger jacket pipe of the present invention and the welding method of end coupling, including step 1, by inner tube B and outside
After pipe C polings, end coupling A and outer tube C weld seam D is first welded；Step 2, above-mentioned end coupling A and outer tube C weld seam
D is carrying out the inner tube B and end coupling A welding for connecting the weld seam H between groove after welding, because road weld seam H is
After inner tube B, outer tube C polings, end coupling A and outer tube C weld seam D carries out weld seam H welding again after welding, belong to
Close up weld seam in sleeve pipe, so cannot be directly viewed weld seam H from outside, can only be grouped inside pipe.Claw is determined
The first-class rotating rod 3 of position device 4, locking nut 2 and beat and fill in inner tube B from close to weld seam H sides after handle 1, mobile group is to device
Position of the group to device is adjusted along before and after inner tube B central axial direction, then rotate group to device to connecting at groove in position
Orientation so that the pawl structure distribution of the bottom of claw locator 4 adjusts welding gun at the position without spot welding, from inner tube B ends, stretches
Enter inside pipe, spot welding position found accurately by flashlight or the first-class auxiliary equipment of shooting, on groove circumference 3 points of uniform spot welding or
Multiple spot, reach purpose of the two group to, spot welding.
After the completion of spot welding, dismounting group stretches into welding gun from inner tube B ends, carries out weld seam H welding, you can complete folder to device
The manufacture of sleeve pipe.The method of this welding disclosure satisfy that the precondition of above-mentioned welding, equally with welding side described above
The features such as method is simple, easy to operate, and the weldquality of welding is good.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent substitution, without departing from the reality of technical solution of the present invention
Matter and scope.For example, the present invention is mainly suitable for jacket heat-exchanger, however for other same types bushing type equipment similarly
It is applicable.
Claims (10)
1. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe is to device, it is characterised in that：Jacket pipe for jacket heat-exchanger
Gapless group pair between the connection groove of inner tube and its end coupling, described group device is included claw locator, rotating rod,
Locking nut and handle is beaten, one end of the rotating rod wears the central axis of the claw locator and passes through bolt
Nut is fixedly connected, and beats handle described in the other end setting of the rotating rod, the handle that beats passes through the locking screw
It is female spacing；Claw locator props up not being determined without spot welding part, jacket pipe in place of need to welding by claw for the madial wall of jacket pipe
Position device covering, and claw locator leaves the space stretched into internal tube for welding gun and welded.
2. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 1 is to device, it is characterised in that：The pawl
Formula locator includes the structure at least more than three-jaw, and circumference of the structure at least more than three-jaw along the claw locator
It is uniformly distributed.
3. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 2 is to device, it is characterised in that：The pawl
Formula locator is three-jaw structure or four paws structure.
4. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 1 is to device, it is characterised in that：The pawl
The inside of formula locator is arranged to hollow-core construction.
5. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 1 is to device, it is characterised in that：The pawl
The leading section of formula locator is disposed as rounding corner structure with rearward end.
6. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 1 is to device, it is characterised in that：The pawl
The outer surface of formula locator is provided with smooth abrasion-proof layer.
7. the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe according to claim 1 is to device, it is characterised in that：It is described to strike
Band gap fit between hired roughneck's handle and the rotating rod.
8. jacket heat-exchanger, including the jacket pipe being made up of inner and outer tubes, and positioned at the end at the jacket pipe both ends
Connector, it is characterised in that：Pass through claim 1 to 7 between the inner tube of the jacket pipe and the connection groove of its end coupling
The inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe described in middle any one connects to device welding.
9. the welding method of jacket heat-exchanger jacket pipe and end coupling, it is characterised in that comprise the following steps：
Step 1, after inner tube and outer tube poling, first weld the weld seam of end coupling and outer tube；
Step 2, the weld seam of above-mentioned end coupling and outer tube weld after between the connection groove of inner tube and end coupling is carried out
Weld seam welding；
The concrete operations of wherein step 2 are as follows：By the jacket heat-exchanger jacket pipe described in any one in claim 1 to 7
Inner tube shallow bore hole weldering group fills in inner tube to device from the side of the weld seam between the connection groove close to inner tube and end coupling, mobile to be somebody's turn to do
Group, to groove is connected, position of the group to device is adjusted along before and after the central axial direction of inner tube, then rotate the group to the position of device
Orientation to device is so that secondly the pawl structure distribution of the claw locator, is adjusted from the end of inner tube at the position without spot welding
Whole welding gun stretches into inner tube, and spot welding position is found accurately by illumination auxiliary device, then, connection groove circumference on uniformly spot welding with
Reach group to point weldering, finally, spot welding is completed, and is dismantled the group to device, is reused the company that welding gun completes inner tube and end coupling
Connect the welding of the weld seam between groove.
10. the welding method of jacket heat-exchanger jacket pipe according to claim 9 and end coupling, it is characterised in that：
The illumination auxiliary device is flashlight or camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923291.6A CN105397396B (en) | 2015-12-14 | 2015-12-14 | Welding method of the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe to device, jacket heat-exchanger and jacket pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510923291.6A CN105397396B (en) | 2015-12-14 | 2015-12-14 | Welding method of the inner tube shallow bore hole weldering group of jacket heat-exchanger jacket pipe to device, jacket heat-exchanger and jacket pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105397396A CN105397396A (en) | 2016-03-16 |
| CN105397396B true CN105397396B (en) | 2017-12-08 |
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| CN107855721A (en) * | 2017-09-20 | 2018-03-30 | 上海市安装工程集团有限公司 | The prefabricated platform and method for prefabricating of jacket pipe |
| CN109317896A (en) * | 2018-11-23 | 2019-02-12 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of thermal shock casing and safe end assemble fixed device |
| CN110449697B (en) * | 2019-08-06 | 2021-09-28 | 张家港市江南锅炉压力容器有限公司 | Inner pipe heating device for linear quencher and inner pipe welding method using same |
| CN110977132A (en) * | 2019-12-23 | 2020-04-10 | 东方电气集团东方汽轮机有限公司 | Welding structure and method of multilayer sleeve structure |
| CN114871532B (en) * | 2022-07-11 | 2022-10-11 | 四川空分设备(集团)有限责任公司 | Manual deep hole welding method for heat exchange tube and tube plate |
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| CN102608139A (en) * | 2012-03-04 | 2012-07-25 | 茂名重力石化机械制造有限公司 | Radiographic detection method for welding joint of outer tube sleeved with inner tube |
| CN202507022U (en) * | 2012-04-01 | 2012-10-31 | 河南中轴股份有限公司 | Axle tube assembly welding and locating tool |
| CN104339120B (en) * | 2014-10-31 | 2016-02-03 | 茂名重力石化机械制造有限公司 | The self-tightening type line-up clamp of rapid-cooling heat exchanger pipe splicing |
| CN205325095U (en) * | 2015-12-14 | 2016-06-22 | 茂名重力石化机械制造有限公司 | Jacket heat exchanger jacket sleeve's inner tube shallow bore hole welds group to ware and jacket heat exchanger |
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2015
- 2015-12-14 CN CN201510923291.6A patent/CN105397396B/en active Active
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