CN108466007A - A kind of petrochemical pipe welding fixture - Google Patents
A kind of petrochemical pipe welding fixture Download PDFInfo
- Publication number
- CN108466007A CN108466007A CN201810469627.XA CN201810469627A CN108466007A CN 108466007 A CN108466007 A CN 108466007A CN 201810469627 A CN201810469627 A CN 201810469627A CN 108466007 A CN108466007 A CN 108466007A
- Authority
- CN
- China
- Prior art keywords
- collet
- connection
- rod
- block
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- B23K37/0533—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 external pipe alignment clamps
Abstract
The invention discloses petrochemical pipe welding fixtures,It include the collet for pipeline to be clamped,The fixing bolt of fixed chuck,Locking device,Connection is foxy,Slide bar,Collet includes front band,Lower catch hoop,Shaft,The side of the front band is equipped with upper mounted plate,Fixed plate is equipped with upper screwed hole,The lower face of the other side of the front band is equipped with connecting plate,Axis hole is equipped in the connecting plate,The side of the lower catch hoop is equipped with bottom plate,Threaded hole above and below the bottom plate,Lower threaded hole and upper screwed hole aligned in position,The fixing bolt is respectively at upper screwed hole,Lower threaded hole connection,The both ends of the other side upper surface of the lower catch hoop are equipped with link block,The shaft is set in axis hole,And both ends are connected respectively at link block,The locking device and collet screw-thread fit,The foxy side for being set to locking device of connection,Connection slippery fellow connect with front band,The slide bar is connected with slippery fellow is connect.
Description
Technical field
The present invention relates to pipeline jig technical field, specially a kind of petrochemical pipe welding fixture.
Background technology
In the pipe process such as petrochemical industry, since distance is very long, it is impossible to be a root long pipe, need many pipes
It links together, in the place that Guan Yuguan is connected, needs to weld together, in order to ensure the connected leakproofness of pipeline, due to this
A little pipelines are generally buried to need good leakproofness down below, could reduce leakage accident in this way, ensures transport.Current
Fixture is mostly complicated, troublesome in poeration, and can be slided in clamping process, causes weld seam too big, influences welding quality.
Invention content
The purpose of the present invention is to provide a kind of petrochemical pipe welding fixtures, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides the following technical solutions：
A kind of petrochemical pipe welding fixture includes the fixing bolt of collet for pipeline to be clamped, fixed chuck, locking
Device, connection slippery fellow, slide bar, the quantity of the collet is two, and collet includes front band, lower catch hoop, shaft, the front band
Side be equipped with upper mounted plate, fixed plate is equipped with upper screwed hole, sets on the lower face of the other side of the front band
There is connecting plate, axis hole is equipped in the connecting plate, the side of the lower catch hoop is equipped with bottom plate, and the bottom plate is equipped with
Lower threaded hole, lower threaded hole and upper screwed hole aligned in position, the fixing bolt are connect with upper screwed hole, lower threaded hole respectively, institute
The both ends for stating the other side upper surface of lower catch hoop are equipped with link block, and the shaft is set in axis hole, and both ends are respectively at link block
Connection, the locking device and collet screw-thread fit, the foxy side for being set to locking device of connection, connection slippery fellow and upper card
Hoop connection, the slide bar are connected with slippery fellow is connect.
Preferably, the quantity of the locking device is four, is respectively arranged in the front band and lower catch hoop of two collets
Portion, the locking device include rotational handle, threaded rod, jacking block, and the lower face of the rotational handle and the upper end of threaded rod connect
It connects, the lower face connection of the jacking block and threaded rod, the threaded rod coordinates with collet, and the rotational handle is set to the outer of collet
Side, jacking block are set to the inside of collet, and the jacking block is cylindric, and the end face diameter of jacking block is bigger 1-2cm than the diameter of threaded rod.
Preferably, the jacking block is made of hard rubber material, and the end face of the jacking block, which is equipped with, prevents pipe slides
Antiskid thread.
Preferably, the foxy quantity of the connection is two, is fixedly connected respectively with the front band of two collets, the company
It includes pilot pin, sliding block to connect foxy, and the pilot pin is threadedly coupled with sliding block, and pilot pin is set to the upper surface of sliding block, the cunning
The side of block is equipped with sets of holes, and the sets of holes are left and right through-hole, and the lower end of the pilot pin is set in sets of holes.
Preferably, the slide bar connect foxy connection with two, and the slide bar includes limited block, the body of rod, and the body of rod is thick
Degree coordinates with sets of holes, and the body of rod is equipped with mounting hole, and the mounting hole is evenly spaced on along body of rod axis, the mounting hole
Coordinate with pilot pin, the quantity of the limited block is two, and two limited blocks are respectively arranged on the both ends of the body of rod, and limited block is cylinder
Shape structure, limited block end face diameter are bigger 2-3cm than body of rod end face diameter.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the quantity of the petrochemical pipe welding fixture, the collet is two, locking device and collet screw-thread fit,
The side that slippery fellow is set to locking device is connected, connection slippery fellow connect with front band, and slide bar is connected with slippery fellow is connect, the clamp structure
Simply, easy to operate, and the clip position to pipeline can be chosen at random, and collet is consolidated by connecting slippery fellow
It is fixed, it prevents from sliding in clamping, makes fixation more firm, improve welding precision.
2. the side of the petrochemical pipe welding fixture, front band is equipped with upper mounted plate, the side of lower catch hoop is equipped with down
Fixed plate, fixing bolt are connect with upper screwed hole, lower threaded hole respectively, upper and lower clip are fixed by fixing bolt, fixation side
Formula is simply secured, easy to operation, and efficiency is higher, and the both ends of the other side upper surface of lower catch hoop are equipped with link block, and shaft is set to axis
In hole, and both ends are connected respectively at link block, and upper and lower clip is rotatablely connected by shaft, convenient for opening and closing, are saved
Manpower.
3. the petrochemical pipe welding fixture, threaded rod coordinates with collet, and rotational handle is set to the outside of collet, can be with
Pipeline is clamped as desired by rotational handle and is unclamped, easy to operate, jacking block is made of hard rubber material,
It prevents from scratching pipeline when jacking block and tube contacts, the end face of jacking block is equipped with the antiskid thread for preventing pipe slides, allows fixed clamp
More firm stable.
4. the petrochemical pipe welding fixture, it is two to connect foxy quantity, respectively with the front band of two collets
It is fixedly connected, collet progress position can be fixed by connecting slippery fellow, pilot pin is threadedly coupled with sliding block, easy to operate, just
In adjusting.
5. the petrochemical pipe welding fixture, body of rod rugosity coordinates with sets of holes, realizes connection slippery fellow and is sent out on the body of rod
Raw sliding, the body of rod are equipped with mounting hole, and mounting hole coordinates with pilot pin, can be positioned to collet when sliding into appropriate location,
It is not only easy to operate, but also save strength, it is therefore prevented that it is slided in welding process, improves welding precision, two limited blocks
The both ends of the body of rod are respectively arranged on, can prevent connection slippery fellow from skidding off the body of rod, make use safer.
Description of the drawings
Attached drawing 1 is overall structure of the present invention；
Attached drawing 2 is front view of the present invention；
Attached drawing 3 is left view of the present invention；
Attached drawing 4 is enlarged drawing at the A of Fig. 1；
Attached drawing 5 is the foxy structural schematic diagram of connection.
In figure, 1- collets；101- front bands；102- upper mounted plates；103- bottom plates；104- lower catch hoops；105- connections
Plate；106- shafts；107- link blocks；2- locking devices；201- rotational handles；202- threaded rods；203- jacking blocks；3- connections are slided
Head；301- pilot pins；302- sliding blocks；303- sets of holes；4- slide bars；401- limited blocks；The 402- bodies of rod；403- mounting holes；5- is fixed
Bolt；
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 shown in -5, a kind of petrochemical pipe welding fixture of the present embodiment, includes for pipeline to be clamped
The fixing bolt 5 of collet 1, fixed chuck, it is characterised in that：Locking device 2, connection slippery fellow 3, slide bar 4, the quantity of the collet 1
It it is two, collet 1 includes front band 101, lower catch hoop 104, shaft 106, and the side of the front band 101 is equipped with upper mounted plate
102, fixed plate 102 is equipped with upper screwed hole, and the lower face of the other side of the front band 101 is equipped with connecting plate
105, the connecting plate 105 is interior to be equipped with axis hole, and the side of the lower catch hoop 104 is equipped with bottom plate 103, the bottom plate
103 be equipped with lower threaded hole, lower threaded hole and upper screwed hole aligned in position, the fixing bolt 5 respectively with upper screwed hole, lower screw thread
Hole connects, and the both ends of the other side upper surface of the lower catch hoop 104 are equipped with link block 107, and the shaft 106 is set in axis hole,
And both ends are connected respectively at link block 107, the locking device 2 and 1 screw-thread fit of collet, the connection slippery fellow 3 is set to locking
The side of device 2, connection slippery fellow 3 connect with front band 101, and the slide bar 4 is connected with slippery fellow 3 is connect.
In the present embodiment, the quantity of the locking device 2 is four, is respectively arranged on the front band of two collets and lower card
The middle part of hoop, the locking device 2 include rotational handle 201, threaded rod 202, jacking block 203, the lower end of the rotational handle 201
Face is connect with the upper end of threaded rod 202, and the jacking block 203 is connect with the lower face of threaded rod 202, the threaded rod 202 and folder
First 1 cooperation, the rotational handle 201 are set to the outside of collet 1, and jacking block 203 is set to the inside of collet 1, and the jacking block 203 is circle
The end face diameter of column, jacking block 203 is bigger 1-2cm than the diameter of threaded rod 202.
In the present embodiment, the jacking block 203 is made of hard rubber material, and the end face of the jacking block 203, which is equipped with, prevents
The only antiskid thread of pipe slides.
In the present embodiment, the quantity of the connection slippery fellow 3 is two, is fixed respectively with the front band of two collets 1 101
Connection, the connection slippery fellow 3 includes pilot pin 301, sliding block 302, and the pilot pin 301 is threadedly coupled with sliding block 302, pilot pin
301 are set to the upper surface of sliding block 302, and the side of the sliding block 302 is equipped with sets of holes 303, and the sets of holes 303 are left and right through-hole, institute
The lower end for stating pilot pin 301 is set in sets of holes 303.
In the present embodiment, the slide bar 4 connect foxy connection with two, and the slide bar 4 includes limited block 401, the body of rod
402,402 rugosity of the body of rod coordinates with sets of holes 303, and the body of rod 402 is equipped with mounting hole 403, and the mounting hole 403 is along bar
402 axis of body is evenly spaced on, and the mounting hole 403 coordinates with pilot pin 301, and the quantity of the limited block 401 is two,
Two limited blocks 401 are respectively arranged on the both ends of the body of rod 402, and limited block 401 is cylindrical-shaped structure, 401 end face diameter ratio of limited block
The big 2-3cm of 402 end face diameter of the body of rod.
In use, pipeline is clamped by collet 1 first, then upper and lower clip is fixed by fixing bolt 5, so
After be slidably connected slippery fellow 3, adjust the position of collet 1, after position is fixed, coordinated to collet 1 by pilot pin 5 and mounting hole 403
Position is fixed.The quantity of the petrochemical pipe welding fixture, the collet 1 is two, locking device 2 and 1 spiral shell of collet
Line coordinates, and connection slippery fellow 3 is set to the sides of locking device 2, and connection slippery fellow 3 connect with front band 101, slide bar 4 with connect foxy 3
Connection, the clamp structure is simple, easy to operate, and can choose at random the clip position to pipeline, and passes through connection
Foxy 3 pairs of collets are fixed, and prevent from sliding in clamping, make fixation more firm, improve welding precision.The oil
The side of chemical pipeline welding fixture, front band 101 is equipped with upper mounted plate 102, and the side of lower catch hoop 104 is equipped with bottom plate
103, fixing bolt 5 is connect with upper screwed hole, lower threaded hole respectively, upper and lower clip is fixed by fixing bolt 5, fixation side
Formula is simply secured, easy to operation, and efficiency is higher, and the both ends of the other side upper surface of lower catch hoop 104 are equipped with link block 107, shaft
106 are set in axis hole, and both ends are connected respectively at link block 107, and upper and lower clip is rotatablely connected by shaft 106, is convenient for
It opens and closes, save manpower.The petrochemical pipe welding fixture, threaded rod 202 coordinate with collet 1, and rotational handle 201 is set
In the outside of collet 1, pipeline can be clamped and unclamped as desired by rotational handle 201, easy to operate, jacking block
203 are made of hard rubber material, and pipeline is scratched when preventing jacking block 203 with tube contacts, and the end face of jacking block 203 is equipped with and prevents
The antiskid thread of pipe slides, allows fixed clamp more firm stable.The petrochemical pipe welding fixture, connection slippery fellow's 3
Quantity is two, is fixedly connected respectively with the front band of two collets 1 101, can be by connecting foxy 3 pairs of collets 1 into line position
Fixation is set, pilot pin 301 is threadedly coupled with sliding block 302, easy to operate, convenient for adjusting.The petrochemical pipe welding fixture, bar
402 rugosity of body coordinates with sets of holes 303, realizes connection slippery fellow 3 and is slided on the body of rod 402, the body of rod 402 is equipped with mounting hole
403, mounting hole 403 coordinates with pilot pin 301, can be positioned to collet 1 when sliding into appropriate location, not only easy to operate,
And save strength, it is therefore prevented that slided in welding process, improve welding precision, two limited blocks 401 are respectively arranged on bar
The both ends of body 402 can prevent connection slippery fellow 3 from skidding off the body of rod 402, make use safer.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (5)
1. a kind of petrochemical pipe welding fixture includes the fixing bolt (5) for the collet of pipeline (1), fixed chuck to be clamped,
It is characterized in that：The quantity of locking device (2), connection foxy (3), slide bar (4), the collet (1) is two, collet (1) packet
Front band (101), lower catch hoop (104), shaft (106) are included, the side of the front band (101) is equipped with upper mounted plate (102), institute
It states upper mounted plate (102) and is equipped with upper screwed hole, the lower face of the other side of the front band (101) is equipped with connecting plate
(105), axis hole is equipped in the connecting plate (105), the side of the lower catch hoop (104) is equipped with bottom plate (103), under described
Fixed plate (103) be equipped with lower threaded hole, lower threaded hole and upper screwed hole aligned in position, the fixing bolt (5) respectively with upper spiral shell
Pit, the connection of lower threaded hole, the both ends of the other side upper surface of the lower catch hoop (104) are equipped with link block (107), the shaft
(106) it is set in axis hole, and both ends are connected respectively at link block (107), the locking device (2) and collet (1) screw-thread fit,
The connection foxy (3) is set to the side of locking device (2), connects foxy (3) and is connect with front band (101), the slide bar (4)
It is connected with foxy (3) are connect.
2. a kind of petrochemical pipe welding fixture according to claim 1, it is characterised in that：The locking device (2)
Quantity be four, be respectively arranged on the middle part of the front band and lower catch hoop of two collets, the locking device (2) includes rotation hand
Handle (201), threaded rod (202), jacking block (203), the lower face of the rotational handle (201) connect with the upper end of threaded rod (202)
It connects, the jacking block (203) connect with the lower face of threaded rod (202), and the threaded rod (202) coordinates with collet (1), described turn
Fixed handle (201) is set to the outside of collet (1), and jacking block (203) is set to the inside of collet (1), and the jacking block (203) is cylinder
The end face diameter of shape, jacking block (203) is bigger 1-2cm than the diameter of threaded rod (202).
3. a kind of petrochemical pipe welding fixture according to claim 2, it is characterised in that：The jacking block (203) is
It is made of hard rubber material, the end face of the jacking block (203) is equipped with the antiskid thread for preventing pipe slides.
4. a kind of petrochemical pipe welding fixture according to claim 1, it is characterised in that：The connection is foxy (3)
Quantity be two, be fixedly connected respectively with the front band (101) of two collets (1), connection slippery fellow (3) includes pilot pin
(301), sliding block (302), the pilot pin (301) are threadedly coupled with sliding block (302), and pilot pin (301) is set to sliding block (302)
The side of upper surface, the sliding block (302) is equipped with sets of holes (303), and the sets of holes (303) are left and right through-hole, the pilot pin
(301) lower end is set in sets of holes (303).
5. a kind of petrochemical pipe welding fixture according to claim 4, it is characterised in that：The slide bar (4) and two
The foxy connection of a connection, the slide bar (4) include limited block (401), the body of rod (402), the body of rod (402) rugosity and sets of holes
(303) coordinate, the body of rod (402) is equipped with mounting hole (403), and the mounting hole (403) is between the body of rod (402) axis is uniform
Every distribution, the mounting hole (403) coordinates with pilot pin (301), and the quantity of the limited block (401) is two, two limits
Block (401) is respectively arranged on the both ends of the body of rod (402), and limited block (401) is cylindrical-shaped structure, limited block (401) end face diameter ratio
The body of rod (402) big 2-3cm of end face diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469627.XA CN108466007A (en) | 2018-05-16 | 2018-05-16 | A kind of petrochemical pipe welding fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469627.XA CN108466007A (en) | 2018-05-16 | 2018-05-16 | A kind of petrochemical pipe welding fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108466007A true CN108466007A (en) | 2018-08-31 |
Family
ID=63260306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810469627.XA Withdrawn CN108466007A (en) | 2018-05-16 | 2018-05-16 | A kind of petrochemical pipe welding fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108466007A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109290712A (en) * | 2018-12-07 | 2019-02-01 | 涡阳县盛鸿科技有限公司 | A kind of frock clamp for cross column welding |
| CN109332975A (en) * | 2018-11-23 | 2019-02-15 | 安徽理工大学 | A kind of adaptable welding tooling |
| CN109488641A (en) * | 2018-12-28 | 2019-03-19 | 上海海事大学 | A kind of centrifugal compressor diffuser arrangement |
| CN109590575A (en) * | 2018-11-15 | 2019-04-09 | 燕卓君 | Cu-AL pipe wire bonding actuator and method |
| CN111266760A (en) * | 2020-03-23 | 2020-06-12 | 青岛科华钢结构有限公司 | Steel structure welding equipment and method |
| CN111467185A (en) * | 2020-04-23 | 2020-07-31 | 江西省人民医院 | Hemiplegia rehabilitation physiotherapy device of neurosurgery |
| CN111496458A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe connection auxiliary device and using method thereof |
| CN111496456A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe butt joint corrector and using method thereof |
| CN111745566A (en) * | 2020-07-06 | 2020-10-09 | 冯超 | Anti-deformation hardware clamping tool |
| CN112091483A (en) * | 2020-09-03 | 2020-12-18 | 海洋石油工程（青岛）有限公司 | Marine structure conduit vertical piece pipe group pair limiting device and limiting method |
| CN112643179A (en) * | 2020-12-08 | 2021-04-13 | 凯络文换热器（中国）有限公司 | Heat exchange tube welding position device |
| CN112720717A (en) * | 2018-10-24 | 2021-04-30 | 姚育晶 | Wood clamping system and method |
| CN112958989A (en) * | 2021-01-22 | 2021-06-15 | 南京工程学院 | Metal material processing and welding equipment and using method thereof |
| CN113864615A (en) * | 2021-09-02 | 2021-12-31 | 宏芯气体(上海)有限公司 | Monitoring system and method for gas purification |
-
2018
- 2018-05-16 CN CN201810469627.XA patent/CN108466007A/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720717A (en) * | 2018-10-24 | 2021-04-30 | 姚育晶 | Wood clamping system and method |
| CN112720717B (en) * | 2018-10-24 | 2022-04-01 | 淮北特致信息科技有限公司 | Wood clamping system and method |
| CN109590575A (en) * | 2018-11-15 | 2019-04-09 | 燕卓君 | Cu-AL pipe wire bonding actuator and method |
| CN109332975A (en) * | 2018-11-23 | 2019-02-15 | 安徽理工大学 | A kind of adaptable welding tooling |
| CN109290712A (en) * | 2018-12-07 | 2019-02-01 | 涡阳县盛鸿科技有限公司 | A kind of frock clamp for cross column welding |
| CN109488641A (en) * | 2018-12-28 | 2019-03-19 | 上海海事大学 | A kind of centrifugal compressor diffuser arrangement |
| CN111266760A (en) * | 2020-03-23 | 2020-06-12 | 青岛科华钢结构有限公司 | Steel structure welding equipment and method |
| CN111496458A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe connection auxiliary device and using method thereof |
| CN111496456A (en) * | 2020-04-08 | 2020-08-07 | 四川凯琳展科技有限公司 | Steel pipe butt joint corrector and using method thereof |
| CN111467185A (en) * | 2020-04-23 | 2020-07-31 | 江西省人民医院 | Hemiplegia rehabilitation physiotherapy device of neurosurgery |
| CN111745566A (en) * | 2020-07-06 | 2020-10-09 | 冯超 | Anti-deformation hardware clamping tool |
| CN112091483A (en) * | 2020-09-03 | 2020-12-18 | 海洋石油工程（青岛）有限公司 | Marine structure conduit vertical piece pipe group pair limiting device and limiting method |
| CN112643179A (en) * | 2020-12-08 | 2021-04-13 | 凯络文换热器（中国）有限公司 | Heat exchange tube welding position device |
| CN112958989A (en) * | 2021-01-22 | 2021-06-15 | 南京工程学院 | Metal material processing and welding equipment and using method thereof |
| CN113864615A (en) * | 2021-09-02 | 2021-12-31 | 宏芯气体(上海)有限公司 | Monitoring system and method for gas purification |
| CN113864615B (en) * | 2021-09-02 | 2023-08-22 | 宏芯气体(上海)有限公司 | Monitoring system and method for gas purification |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180831 |
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| WW01 | Invention patent application withdrawn after publication |