CN220240439U - Stainless steel pipe welding cooling device - Google Patents
Stainless steel pipe welding cooling device Download PDFInfo
- Publication number
- CN220240439U CN220240439U CN202322241133.5U CN202322241133U CN220240439U CN 220240439 U CN220240439 U CN 220240439U CN 202322241133 U CN202322241133 U CN 202322241133U CN 220240439 U CN220240439 U CN 220240439U
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- blocking plate
- plate
- bearing
- stainless steel
- steel pipe
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- 238000003466 welding Methods 0.000 title claims abstract description 87
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 29
- 239000010935 stainless steel Substances 0.000 title claims abstract description 29
- 230000000903 blocking effect Effects 0.000 claims abstract description 81
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Arc Welding In General (AREA)
Abstract
A stainless steel pipe welding cooling device is provided with a first blocking plate and a second blocking plate which are circular, wherein the first blocking plate and the second blocking plate are connected and fixed through two or more strip-shaped connecting plates, the connecting plates are transversely arranged, one end of each connecting plate is welded and fixed with the first blocking plate, and the other end of each connecting plate is movably connected with the second blocking plate through a connecting piece. And continuous square grooves are formed in the outer sides of the first blocking plate and the second blocking plate and along the circumferential edges of the first blocking plate and the second blocking plate, and air bags are arranged in the square grooves. The first closure plate center is fixed with leading-in mechanism, and leading-in mechanism contains fastening base and turns, and entering pipeline, exhaust pipeline pass the turning center and get into inside the first closure plate, lie in between first closure plate, the second closure plate. The utility model can be arranged at two sides of the welding seam of the welded pipe body, additional reinforcement is not needed, the inflated air bag is closely contacted with the pipe to be welded, and the generated friction force can ensure that the device is stably fixed in the pipe to be welded.
Description
Technical Field
The utility model belongs to the technical field of welding processes, and particularly relates to a stainless steel pipe welding cooling device.
Background
In the austenitic stainless steel welding process, the temperature of a welding line can be increased to about 200 ℃ after 2-3 times of welding, and the intergranular corrosion resistance of a welding joint is seriously reduced when the temperature between the welding line layers is less than 150 ℃, so that intergranular corrosion can not be generated. Therefore, the control of the interlayer temperature in the welding process plays a critical role in judging whether the quality of the welding line is qualified, and the interlayer temperature is controlled mainly by the following method when the stainless steel is welded in the past:
method 1: and naturally cooling, namely, before the next welding seam is welded, waiting until the temperature of the welding seam is lower than 150 ℃ in a natural environment air cooling mode.
Method 2: and cooling by spraying water, namely, before the welding of the next welding line, directly spraying water to the welding line to be welded to reduce the temperature of the welding line to be welded to below 150 ℃.
In the prior art, a special cooling device for welding the stainless steel pipe does not exist, and the existing cooling method has the following defects:
firstly, because the heat conductivity coefficient of the stainless steel is smaller, heat generated by welding of a former welding line can not be rapidly dissipated through a natural cooling method before welding of a latter welding line, so that the interlayer temperature is reduced to be below 150 ℃ and the waiting time is very long, and the construction efficiency is greatly reduced for welding of the stainless steel pipe.
Secondly, before the welding of the subsequent welding line, the previous welding line is cooled by using a water spraying method, the field operation is complicated, water sprayed on the welding line cannot be effectively controlled and recovered, and meanwhile, the potential safety hazard of electric leakage caused by water contact of a cable exists.
Disclosure of Invention
In order to solve the problems, the utility model provides a stainless steel pipe welding cooling device, which aims to achieve the purpose of cooling a pipe fitting to be welded in the welding process, and adopts the following technical scheme:
a stainless steel pipe welding cooling device comprises a first blocking plate and a second blocking plate which are circular, wherein the first blocking plate and the second blocking plate are connected and fixed through two or more strip-shaped connecting plates, the connecting plates are transversely arranged, one end of each connecting plate is welded and fixed with the first blocking plate, the other end of each connecting plate is movably connected with the second blocking plate through a connecting piece, and the two or more connecting plates are arranged at equal intervals along the circumference of the blocking plate.
And continuous square grooves are formed in the outer sides of the first blocking plate and the second blocking plate and along the circumferential edges of the first blocking plate and the second blocking plate, air bags are placed in the square grooves, the openings of the square grooves are outwards, and the air bags are contacted with the inner surface of a pipe fitting to be welded.
The guiding mechanism comprises a fastening base and a rotator, one end of the rotator is provided with a limit stop, one end of the rotator, which is far away from the limit stop, sequentially passes through a first waterproof bearing, the fastening base, a second waterproof bearing and a nut, the guiding mechanism is fixed with the first blocking plate through the fastening base, and an inlet pipeline and an outlet pipeline pass through the center of the rotator and enter the first blocking plate to be located between the first blocking plate and the second blocking plate.
The stainless steel pipe welding and cooling device is characterized in that the end part of the connecting plate is provided with a square connecting hole, one end of the L-shaped connecting piece is welded with the second blocking plate, and the other end of the L-shaped connecting piece penetrates through the connecting hole to be fixed. When the first blocking plate and the second blocking plate are placed oppositely, the free end of the connecting piece is just aligned with the connecting hole formed in the connecting plate, the first blocking plate rotates relative to the second blocking plate, and the free end of the connecting piece is just inserted into the connecting hole to be fixed.
The stainless steel pipe welding and cooling device further comprises a fastening base and a first blocking plate, wherein the fastening base is connected with the first blocking plate through bolts, a circle of bolts are arranged along the circumferential edge of the fastening base, a through hole is formed in the center of the fastening base, and a rotator penetrates through the through hole and can rotate in the through hole.
The stainless steel pipe welding and cooling device is characterized in that the air bag is an air bag which is round in shape and is placed in the square groove, the air bag is provided with an inflating valve, a round hole is formed in the groove wall of the square groove, and the inflating valve penetrates out of the round hole.
The stainless steel pipe welding cooling device further comprises a first waterproof bearing, a first bearing outer ring and a first bearing inner ring, a second waterproof bearing, a second bearing outer ring and a second bearing inner ring, wherein the first bearing outer ring is rotatable relative to the first bearing inner ring, the second bearing outer ring is rotatable relative to the second bearing inner ring, the first bearing outer ring, the second bearing outer ring and the fastening base are fixedly connected, and the first bearing inner ring, the second bearing inner ring and the rotating body are fixedly connected. The first bearing inner ring can circumferentially rotate relative to the first bearing outer ring and the second bearing inner ring relative to the second bearing outer ring, the first bearing inner ring and the second bearing inner ring are fixedly connected with the rotating body, the first bearing outer ring and the second bearing outer ring are fixedly connected with the fastening base, and further the rotating body is driven to circumferentially rotate relative to the fastening base.
In the stainless steel pipe welding and cooling device, further, sealing gaskets are arranged between the fastening base and the first waterproof bearing and between the fastening base and the second waterproof bearing.
In the stainless steel pipe welding and cooling device, a sealing gasket is further arranged between the stop block and the second waterproof bearing.
In the stainless steel pipe welding and cooling device, 20-30cm exists between the first blocking plate and the second blocking plate.
A method for cooling and welding by using a stainless steel pipe welding and cooling device includes the steps of putting a first blocking plate and a second blocking plate into the stainless steel pipe from two ends of a pipe fitting to be welded respectively, rotating the first blocking plate and the second blocking plate in opposite directions until connecting pieces are in butt joint with connecting holes of connecting plates, inserting the connecting pieces into the connecting holes, connecting the connecting plates and the connecting pieces, and connecting and fixing the first blocking plate and the second blocking plate.
The welding seam is positioned at the center of the cooling device, and the air bag is inflated to expand until the welding seam is in contact with the inner pipe wall of the pipe to be welded and compresses the pipe to be welded, and the first blocking plate, the second blocking plate and the pipe to be welded form a sealing space.
The inlet pipeline is communicated with an argon gas supply pipeline, argon continuously enters the sealed space at a flow of 10L/min-15L/min, air is discharged from the discharge pipeline, when the purity of the argon gas in the sealed space is not more than 50ppm, welding is carried out, after 2-3 welding passes are welded, the inlet pipeline is replaced to be connected with a water inlet pipe, the discharge pipeline is connected with a water outlet pipe, cooling water is input into the sealed space, after cooling water circulation is formed in the sealed space, follow-up welding is carried out, and a circulating pump is connected to the water inlet pipe.
The utility model can be arranged at two sides of the welding seam of the welded pipe body, additional reinforcement is not needed, the inflated air bag is closely contacted with the pipe to be welded, and the generated friction force can ensure that the device is stably fixed in the pipe to be welded. During welding, cooling water is injected and discharged through a closed pipe cavity formed by the blocking plate and the welding pipe by using the peripheral circulating machine through the circulating water introducing device, and heat is circularly exchanged through the cooling effect of the circulating water, so that the aim of cooling weld metal is fulfilled, the temperature between welding layers is effectively reduced, the welding efficiency is improved, the welding quality is ensured, and the welding machine is particularly suitable for maintaining continuous welding when an automatic welding method that the welding pipe rolls on a rotating tire is adopted, and the welding efficiency is improved obviously.
Drawings
FIG. 1 is a schematic view of a cooling apparatus of the present utility model;
FIG. 2 is a schematic view of the structure of the circulating water pipe introduction apparatus;
FIG. 3 is a schematic diagram of a connection plate structure;
FIG. 4 is a schematic view of a first closure plate construction;
FIG. 5 is a schematic view of a second closure plate construction;
FIG. 6 is a schematic view of the front structure of the fastening base;
wherein: 100-first blocking plate, 101-second blocking plate, 102-square groove, 103-inflating valve, 104-airbag, 105-connecting piece, 106-metal round tube, 107-connecting hole, 300-circulating water pipe leading-in device, 301-swivel, 302-nut, 303-first waterproof bearing, 304-fastening base, 305-second waterproof bearing, 306-discharging pipeline, 307-entering pipeline, 309-limit stop and 400-pipe piece to be welded.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
The stainless steel pipe welding cooling device is shown in fig. 1, and is provided with a first round blocking plate 100 and a second round blocking plate 101, wherein the first blocking plate and the second blocking plate are connected and fixed through two strip-shaped connecting plates, the two connecting plates are arranged at equal intervals along the circumference of the blocking plate, the connecting plates are transversely placed, one end of each connecting plate is welded and fixed with the first blocking plate, the other end of each connecting plate is movably connected with the second blocking plate through an L-shaped connecting piece 105, a connecting hole (shown in fig. 3) is formed in the end part of each connecting plate, one end of each L-shaped connecting piece is welded with the second blocking plate, and the other end of each L-shaped connecting piece penetrates through the connecting hole to be fixed.
Outside the first and second closure plates, along the circumferential edges of the first and second closure plates, there are provided continuous square grooves (as shown in fig. 4 and 5) 102 in which air bags 104 are placed, the openings of the square grooves being outwardly directed, the air bags being in contact with the inner surface of the tubular member to be welded. The square groove is angle steel, the angle steel opening is outwards, and the outside direction that keeps away from the closure plate center here is, and the gasbag is whole circular gasbag, places in the square groove, and the gasbag has a valve 103, opens on the angle steel web and has a round hole, and the valve wears out in the round hole.
One of them closure plate center is fixed with leading-in mechanism, as shown in fig. 2, and leading-in mechanism includes fastening base 304 and swivel 301, and leading-in mechanism passes through fastening base and first closure plate to be fixed, and fastening base passes through bolted connection with first closure plate, is provided with round bolt along fastening base circumference edge (as shown in fig. 4, 6). One end of the rotator is provided with a limit stop 309, one end of the rotator far away from the limit stop sequentially passes through a first waterproof bearing 303, a fastening base 304, a second waterproof bearing 305 and a nut 302, an inlet pipeline 307 and an outlet pipeline 306 pass through the center of the rotator and enter the first blocking plate to be positioned between the first blocking plate and the second blocking plate, the first waterproof bearing is provided with a first bearing outer ring and a first bearing inner ring, the second waterproof bearing is provided with a second bearing outer ring and a second bearing inner ring, the first bearing outer ring is rotatable relative to the first bearing inner ring, the second bearing outer ring is rotatable relative to the second bearing inner ring, the rotator is fixedly connected with the first bearing inner ring and the second bearing inner ring, the fastening base is fixedly connected with the first bearing outer ring and the second bearing outer ring, and the rotator is rotatable relative to the fastening base. Because the welding seam of the welding pipe is an annular welding seam, the position of the welding gun is kept motionless, the welding pipe rotates on the rotating tire to realize continuous welding, and the rotating body has the function of realizing that the inlet pipeline and the outlet pipeline are relatively static when the welding pipe and the blocking plate rotate, so that the inlet pipeline and the outlet pipeline are prevented from winding. The first waterproof bearing, the second waterproof bearing and the fastening base are fixed through the nut and the check block in a matched mode, and the check block plays a limiting role. The inlet pipeline and the outlet pipeline are connected with a circulating pump, sealing gaskets are arranged between the fastening base and the first waterproof bearing and between the fastening base and the second waterproof bearing, and sealing gaskets are arranged between the stop block and the second waterproof bearing.
When the welding device is used, the first blocking plate and the second blocking plate are respectively placed from two ends of a pipe fitting to be welded, the first blocking plate and the second blocking plate are rotated in opposite directions, the first blocking plate and the second blocking plate are rotated until the connecting piece is in butt joint with the connecting hole of the connecting plate, the connecting piece is inserted into the connecting hole, and the first blocking plate and the second blocking plate are connected and fixed through the connecting plate and the connecting piece.
The welding seam is positioned at the center of the cooling device, and the air bag is inflated to expand until the welding seam is in contact with the inner pipe wall of the pipe to be welded and compresses the pipe to be welded, and the first blocking plate, the second blocking plate and the pipe to be welded form a sealing space.
The inlet pipeline is communicated with the argon gas supply pipeline, argon continuously enters the sealed space at a flow of 10L/min-15L/min, air is discharged from the discharge pipeline, when the purity of the argon gas in the sealed space is not more than 50ppm, welding is carried out at the moment, after 2-3 welding passes are welded, the inlet pipeline is replaced to be connected with the water inlet pipe, the discharge pipeline is connected with the water outlet pipe, cooling water is input into the sealed space through the water inlet pipe, the water is discharged from the water outlet pipe to form circulation, and after the cooling water circulation is formed in the sealed space, subsequent welding is carried out.
The inlet pipeline and the outlet pipeline of the circulating water pipe leading-in device are respectively connected with the inlet pipeline and the outlet pipeline of the circulating machine, cooling water is injected, the cooling water circulates in the closed cavity, and welding construction can be started after the circulating water is formed.
In order to achieve a controllable, adjustable cooling effect, this can be achieved by:
A. the rotating speed or the effective output displacement of the circulating machine is regulated and controlled.
B. And a cooling liquid with better cooling effect is adopted.
C. And adjusting the size of the plugging plate according to the size of the pipe fitting to be welded.
D. The diameters of the inlet and outlet lines are adjusted.
The device is applied to the welding simulation verification of stainless steel pipes, the test pipes with the diameter of 508mm and the wall thickness of 20mm are subjected to multi-layer multi-channel continuous welding, the interlayer temperature is controlled below 100 ℃, and the intergranular corrosion resistance of the welded joint is not reduced. The welding of the pipe with the thickness of 20mm needs to be carried out in multiple layers and multiple layers, and experiments prove that if the traditional natural cooling method is adopted, the pipe needs to be cooled to be lower than 150 ℃ for about 20-30 minutes after 2-3 times of welding, the welding is completed, the total time is about 5-6 hours, continuous and non-stop welding can be realized by adopting the device for cooling, the layer temperature can be controlled to be lower than 100 ℃, the total time is about 1.5 hours, and the efficiency is improved by about 3 times.
Claims (8)
1. A stainless steel pipe welding cooling device is characterized in that: the device comprises a first round blocking plate (100) and a second round blocking plate (101), wherein the first blocking plate and the second blocking plate are fixedly connected through two or more strip-shaped connecting plates (106), the connecting plates are transversely arranged, one end of each connecting plate is fixedly welded with the first blocking plate, the other end of each connecting plate is movably connected with the second blocking plate through a connecting piece (105), and the two or more connecting plates are arranged at equal intervals along the circumferential direction of the blocking plate;
a continuous square groove (102) is formed in the outer sides of the first blocking plate and the second blocking plate and along the circumferential edges of the first blocking plate and the second blocking plate, an air bag (104) is arranged in the square groove, the opening of the square groove faces outwards, and the air bag is in contact with the inner surface of a pipe fitting (400) to be welded;
the first closure plate center is fixed with leading-in mechanism (300), and leading-in mechanism contains fastening base (304) and turns (301), turns one end of turning and has limit stop (309), turns the one end that keeps away from limit stop and pass first waterproof bearing (303), fastening base, second waterproof bearing (305), nut (302) in proper order, and leading-in mechanism is fixed with first closure plate through fastening base, and entering pipeline (307), exhaust pipeline (306) pass the turning center and get into inside the first closure plate, lie in between first closure plate, the second closure plate.
2. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: the connecting plate tip is opened has square connecting hole (107), and the connecting piece is L type, and L type connecting piece one end and second closure plate welding, the other end passes the connecting hole and fixes.
3. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: the fastening base is connected with the first blocking plate through bolts, a circle of bolts are arranged along the circumferential edge of the fastening base, a through hole is formed in the center of the fastening base, and the rotator penetrates through the through hole and can rotate in the through hole.
4. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: the air bag is a circular air bag which is integrally arranged in the square groove and is provided with an inflating valve, a round hole (108) is formed in the wall of the square groove, and the inflating valve penetrates out of the round hole.
5. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: the first waterproof bearing is provided with a first bearing outer ring and a first bearing inner ring, the second waterproof bearing is provided with a second bearing outer ring and a second bearing inner ring, the first bearing outer ring is rotatable relative to the first bearing inner ring, the second bearing outer ring is rotatable relative to the second bearing inner ring, the first bearing outer ring and the second bearing outer ring are fixedly connected with the fastening base, and the first bearing inner ring and the second bearing inner ring are fixedly connected with the rotating body.
6. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: and sealing gaskets are arranged between the fastening base and the first waterproof bearing and between the fastening base and the second waterproof bearing.
7. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: a sealing gasket is arranged between the stop block and the first waterproof bearing.
8. A stainless steel pipe welding cooling apparatus according to claim 1, wherein: 20-30cm are arranged between the first blocking plate and the second blocking plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223265905 | 2022-12-07 | ||
| CN2022232659050 | 2022-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220240439U true CN220240439U (en) | 2023-12-26 |
Family
ID=89226800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322241133.5U Active CN220240439U (en) | 2022-12-07 | 2023-08-21 | Stainless steel pipe welding cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220240439U (en) |
-
2023
- 2023-08-21 CN CN202322241133.5U patent/CN220240439U/en active Active
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