CN115338510A - Welding device for pipelines - Google Patents
Welding device for pipelines Download PDFInfo
- Publication number
- CN115338510A CN115338510A CN202211027780.XA CN202211027780A CN115338510A CN 115338510 A CN115338510 A CN 115338510A CN 202211027780 A CN202211027780 A CN 202211027780A CN 115338510 A CN115338510 A CN 115338510A
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- China
- Prior art keywords
- welding device
- annular
- control valve
- pipeline
- flame spray
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Classifications
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- 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
- B23K5/00—Gas flame welding
-
- 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
- B23K5/00—Gas flame welding
- B23K5/22—Auxiliary equipment, e.g. backings, guides
Abstract
The invention provides a pipeline welding device, and relates to the technical field of pipeline welding. The welding device of pipeline includes cyclic annular pipe fitting, and the interval arrangement has a plurality of flame spray nozzles on the cyclic annular pipe fitting, and a plurality of flame spray nozzles extend towards cyclic annular pipe fitting's central direction, and a plurality of flame spray nozzles limit the space that is used for placing the pipeline of waiting to weld, and a plurality of flame spray nozzles set up to be controlled to be lighted simultaneously to treat that the pipeline of welding welds. According to the technical scheme, the plurality of flame spray heads are arranged at intervals, so that the pipeline can be heated uniformly when the pipeline is welded, and good welding quality is guaranteed.
Description
Technical Field
The invention relates to the technical field of pipeline welding, in particular to a pipeline welding device.
Background
The refrigerating mode of the household refrigerator mainly depends on heat release and heat absorption of a system pipeline to achieve the purpose of cooling the space of the refrigerator. In order to facilitate the batch production of the refrigerator, the pipeline of the system needs to be connected after being installed in sections. The pipeline joint needs to be brazed, the pipeline joint is heated by means of a high-temperature flame gun, and during welding, the welding flux is added to be melted to fill a gap at the pipeline joint, so that the pipeline is sealed, the problems of leakage and the like can be avoided when the refrigerant circularly flows in the system pipeline, the refrigerator can be in a stable working state for a long time, and the using requirements are met.
The existing welding equipment is a single-head flame gun and a double-head flame gun, in the process of using the welding equipment in practice, welded pipelines are often heated in a local concentrated mode, the pipelines are oxidized seriously, pipeline welding leakage is easy to occur, and the situation that products are not evacuated badly is caused, so that the performance of the refrigerator is not up to standard and the refrigerator needs to be repaired in batches. In addition, in the actual use process of the existing welding equipment, the pipelines are produced in batches, the yield needs to be ensured, and if ignition is repeated, much time needs to be wasted. Therefore, in order to save production time, the welding equipment needs to ensure that the flame spray head is always in a burning state, so that resources such as oxygen and natural gas/acetylene are wasted. In addition, because the refrigerator function trend is diversified, the electrical part and the pencil in the refrigerator cabin are also more and more, and the pipeline welding point also mostly is located the cabin space, and current welding equipment during operation, flame length is longer can burn out electrical apparatus part and cable.
To sum up, the welding equipment used in the current production line has the following disadvantages when welding the pipeline:
1. the welded pipeline is heated unevenly, so that the phenomenon of pipeline welding leakage or local overburning is easy to occur, the product is pumped out badly, the performance of the refrigerator is not up to the standard, and the refrigerator needs to be repaired in batches;
2. when the existing welding equipment is used for batch work, the equipment always keeps flame combustion, and resources, particularly oxygen, natural gas or acetylene and the like are wasted;
3. because the space of the refrigerator cabin is limited, electrical parts and cables are often burnt and damaged due to long flame length when the existing welding equipment works.
Disclosure of Invention
The invention aims to provide a pipeline welding device, which solves the technical problem of uneven heat received by pipeline welding in the prior art.
According to the purpose of the invention, the invention also provides a pipeline welding device, which comprises an annular pipe fitting, wherein a plurality of flame spray heads are arranged on the annular pipe fitting at intervals;
the plurality of flame spray heads extend towards the center direction of the annular pipe fitting, and define a space for placing pipelines to be welded, and the plurality of flame spray heads are arranged to be controlled to be simultaneously ignited so as to weld the pipelines to be welded.
Optionally, the method further comprises:
the gas channel is communicated with the annular pipe fitting and is used for conveying ignition gas to the annular pipe fitting;
and the control valve is arranged at the gas channel and used for controlling the on-off of the gas channel.
Optionally, the fire-proof device further comprises an annular fire-proof sheet arranged on the periphery of the annular pipe fitting.
Optionally, the annular firestop sheet has first and second opposed ends arranged to be controllably separated and closed, the annular firestop sheet being configured to be continuous annular when the first and second ends are closed;
the first and second ends are configured to send a disconnect signal to the control valve when disconnected such that the control valve controls the gas passage to be disconnected;
the first and second ends are configured to send a close signal to the control valve when closed such that the control valve controls the gas passage conductance.
Optionally, the annular firestop sheet comprises a first portion having the first and third ends and a second portion having the second and fourth ends, the third and fourth ends being slidably connected.
Optionally, the method further comprises:
and the movable handle is connected with the second part and used for driving the fourth end of the second part to slide along the third end of the first part under the action of external force, so that the first end of the first part is separated from or closed with the second end of the second part.
Optionally, the gas channel is connected to the first portion near the third end;
the movable handle is connected to the second portion proximate the fourth end and is disposed adjacent the gas passage.
Optionally, the method further comprises:
and the control module is connected with the control valve and used for controlling the opening and closing of the control valve.
Optionally, the method further comprises:
the pressure sensor is provided with a first sensing piece and a second sensing piece and is connected with the control module, the first sensing piece is arranged at the first end, the second sensing piece is arranged at the second end, and the control module is configured to control the control valve to be opened when the first sensing piece and the second sensing piece are closed and to be closed when the first sensing piece and the second sensing piece are separated.
Optionally, the method further comprises:
and one end of the elastic piece is connected with the movable handle, and the other end of the elastic piece is connected with the gas channel.
The welding device for the pipelines comprises an annular pipe fitting, wherein a plurality of flame spray heads are arranged on the annular pipe fitting at intervals, the flame spray heads extend towards the center direction of the annular pipe fitting, the flame spray heads define a space for placing the pipelines to be welded, and the flame spray heads are controlled to be ignited simultaneously so as to weld the pipelines to be welded. According to the technical scheme, the plurality of flame sprayers are arranged at intervals, so that the pipelines to be welded are uniformly heated when the pipelines to be welded are welded, and good welding quality is guaranteed.
Further, the pressure sensor of the invention is provided with a first sensing piece and a second sensing piece, and is connected with the control module, the first sensing piece is arranged at the first end, the second sensing piece is arranged at the second end, and the control module is configured to control the control valve to be opened when the first sensing piece and the second sensing piece are closed, and to control the control valve to be closed when the first sensing piece and the second sensing piece are separated. Above-mentioned technical scheme realizes the switching of control valve through pressure-sensitive to the purpose of control flame shower nozzle flame projecting and closing fire, it is more convenient to control, and can reach the effect of energy saving.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
FIG. 1 is a schematic block diagram of a welding apparatus for piping according to an embodiment of the present invention in which a first end and a second end of a ring-shaped fire stop piece are separated;
FIG. 2 is a schematic block diagram of a welding apparatus for piping according to an embodiment of the present invention in which first and second ends of a ring-shaped fire stop piece are closed;
fig. 3 is a schematic structural view of a circular pipe member in a welding apparatus for piping according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. When a feature "comprises or comprises" a or some of its intended features, this indicates that other features are not excluded and that other features may be further included, unless expressly stated otherwise.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.
Unless otherwise defined, all terms (including technical and scientific terms) used in the description of the present embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Fig. 1 is a schematic configuration diagram of a welding apparatus 100 for a piping according to an embodiment of the present invention in which a first end 131 and a second end 141 of a ring-shaped fire stop 15 are separated, fig. 2 is a schematic configuration diagram of a welding apparatus 100 for a piping according to an embodiment of the present invention in which a first end 131 and a second end 141 of a ring-shaped fire stop 15 are closed, and fig. 3 is a schematic configuration diagram of a ring-shaped pipe 10 of a welding apparatus 100 for a piping according to an embodiment of the present invention. As shown in fig. 1, 2 and 3, in a specific embodiment, the welding device 100 for a pipeline includes an annular pipe member 10, and a plurality of flame spray heads 11 are spaced apart from each other on the annular pipe member 10. The plurality of flame spray heads 11 extend towards the center of the ring-shaped pipe member 10, the plurality of flame spray heads 11 define a space for placing a pipeline to be welded, and the plurality of flame spray heads 11 are arranged to be controlled to be ignited simultaneously to weld the pipeline to be welded. Here, the annular pipe member 10 is further provided with an igniter 12 for igniting to ignite the plurality of flame spray heads 11 at the same time.
This embodiment is through setting up a plurality of flame shower nozzles 11 that a plurality of intervals were arranged, can make when treating the welding pipeline and weld and wait that the welding pipeline is heated evenly, guarantees good welding quality, avoids appearing treating the welding pipeline welding leakage, causes the product to find time the condition such as bad.
In this embodiment, the welding device 100 further comprises a gas passage 20 and a control valve 70, wherein the gas passage 20 communicates with the annular tube 10 for delivering ignition gas to the annular tube 10. A control valve 70 is provided at the gas passage 20 for controlling the opening and closing of the gas passage 20. The control valve 70 here is a solenoid valve.
Specifically, the gas passage 20 is connected to a gas pipe 21 and an oxygen pipe 22 for supplying gas and oxygen to the annular pipe 10, wherein the gas may be natural gas, acetylene, or other combustible gas. In the case of natural gas, a gas pipe 21 is used to feed natural gas into the annular pipe 10, and an oxygen pipe 22 is used to feed oxygen into the annular pipe 10. The electromagnetic valve can control the flow of gas in the gas pipe 21 and the oxygen pipe 22 into the annular pipe 10, thereby adjusting the length of the flame sprayed by the flame spray 11. Generally, the greater the flow of oxygen and natural gas into the annular pipe 10, the longer the length of flame spray 11, and the less the flow of oxygen and natural gas into the environmental pipe, the shorter the length of flame spray 11.
In this embodiment, the welding apparatus 100 further includes an annular fire deflector 15, and the annular fire deflector 15 is provided on the outer periphery of the annular tube member 10. The cross section of the annular fire blocking sheet 15 is arc-shaped, so that other parts can be prevented from being burnt by flame through the arc-shaped design.
In this embodiment, the annular firestop sheet 15 has opposite first and second ends 131 and 141, the first and second ends 131 and 141 being arranged to be controllably separated and closed, the annular firestop sheet 15 being configured to be continuous annular when the first and second ends 131 and 141 are closed and annular with a gap when the first and second ends 131 and 141 are separated. Wherein the first end 131 and the second end 141 are arranged to send a separation signal to the control valve 70 upon separation, such that the control valve 70 controls the gas channel 20 to be disconnected. The first end 131 and the second end 141 are arranged to send a closing signal to the control valve 70 when closed, so that the control valve 70 controls the gas channel 20 to conduct. The space defined by the plurality of flame spray heads 11 is circular to facilitate the passage of the conduit through the annular tube member 10. The length of the flame spray 11 can be set according to the diameter of the pipe. When the diameter of the annular pipe 10 is constant, the length of the flame spray 11 is shorter as the diameter of the pipe is larger, and the length of the flame spray 11 is longer as the diameter of the pipe is smaller.
In this embodiment, the number of the flame spray heads 11 is six, and six flame spray heads 11 are uniformly arranged on the annular pipe member 10. Preferably, the gap is created when the first end 131 and the second end 141 of the ring-shaped fire stop 15 are separated, that is, the distance between the two is not greater than the distance between two adjacent flame spray heads 11. In other embodiments, the number of flame spray heads 11 may be set according to specific design requirements, such as four, eight, or ten, etc.
Generally, the number of the flame spray heads 11 is determined according to the diameter of the annular pipe 10. The larger the diameter of the annular pipe 10, the larger the number of flame spray heads 11, and the smaller the number of annular pipe 10, the smaller the number of flame spray heads 11.
Specifically, the annular fire damper 15 includes a first portion 13 and a second portion 14, the first portion 13 having a first end 131 and a third end 132, the second portion 14 having a second end 141 and a fourth end 142, the third end 132 and the fourth end 142 being slidably connected. When the first end 131 and the second end 141 are closed, the third end 132 and the fourth end 142 may be disposed to overlap or not overlap. Most preferably, the third end 132 and the fourth end 142 are also in a closed state when the first end 131 and the second end 141 are closed, so that fire sprayed from the flame spray head 11 can be prevented from being sprayed from the annular fire blocking piece 15, other parts close to a pipeline can be prevented from being burnt, the safety of personnel can be ensured, and the personnel can be prevented from being burnt and injured. During the switching of the first end 131 and the second end 141 of the ring-shaped fire stop piece 15 from the closed state to the separated state, the fourth end 142 slides along the third end 132 to a position where they overlap.
In this embodiment, the welding apparatus 100 further includes a control module 60 connected to the control valve 70 for controlling the opening and closing of the control valve 70.
In this embodiment, the welding device 100 further comprises a pressure sensor having a first sensing tab disposed at the first end 131 and a second sensing tab disposed at the second end 141, and coupled to the control module 60, the control module 60 being configured to control the control valve 70 to open when the first and second sensing tabs are closed and to control the control valve 70 to close when the first and second sensing tabs are separated.
In this embodiment, the control valve 70 is opened and closed by pressure sensing to control the flame spray head 11 to spray fire and close fire, so that the control is more convenient, and the energy saving effect can be achieved.
In this embodiment, the welding device 100 further comprises a movable handle 30, wherein the movable handle 30 is connected to the second portion 14 and configured to slide the fourth end 142 of the second portion 14 along the third end 132 of the first portion 13 under an external force, so that the first end 131 of the first portion 13 is separated from or closed to the second end 141 of the second portion 14.
In this embodiment, the gas passage 20 is connected to the first portion 13 near the third end 132. The movable handle 30 is connected to the second portion 14 near the fourth end 142 and is disposed adjacent the gas passage 20.
In this embodiment, the welding device 100 further includes an elastic member 80 having one end connected to the movable handle 30 and the other end connected to the gas passage 20. When the user opens the movable handle 30, the movable handle 30 slides the second portion 14 along the first portion 13, so that the first end 131 and the second end 141 are closed, and the elastic member 80 is in an extended state. When the user releases the movable handle 30 and presses the movable handle 30, the elastic member 80 is compressed, so that the elastic member 80 is compressed, and the second portion 14 is driven to slide along the first portion 13, so that the first end 131 is separated from the second end 141, and the flame spray head 11 is extinguished. The elastic member 80 here is a pressure spring. In other embodiments, the elastic member 80 may be selected from other elastic members.
In this embodiment, the welding device 100 further includes a sleeve 90, which is disposed on the gas channel 20 and is fixedly connected to the gas channel 20. One end of the elastic member 80 is connected to the sleeve 90. In addition, the welding apparatus 100 further includes a switch 40 installed at the gas passage 20 for being turned on or off by an external force to put the welding apparatus 100 in a power-on state or a power-off state. Specifically, switch 40 is mounted on sleeve 90.
In this embodiment, welding device 100 also includes a power supply line 50 connected to control module 60 for providing power to welding device 100 when switch 40 is open and for ceasing power to welding device 100 when switch 40 is closed.
The use steps of the welding device 100 in this embodiment are as follows:
the method comprises the following steps: pressing switch 40 places welding apparatus 100 in an energized state;
step two: the flow of the electromagnetic valve is set through the control module 60, and the flame length of the flame nozzle 11 is adjusted;
step three: pressing the movable handle 30, thereby compressing the elastic member 80, separating the first end 131 from the second end 141 of the ring-shaped fire damper 15, thereby opening the passage for the pipe to be welded to enter the ring-shaped pipe 10;
step four: when the pipeline to be welded is located at the middle position of the flame nozzle 11, the movable handle 30 is opened, so that the first induction sheet and the second induction sheet at the two ends of the annular fire blocking sheet 15 are in contact, an induction feedback signal is generated and transmitted to the control module 60, the control module 60 controls the electromagnetic valve to open the gas channel 20, and the natural gas/acetylene in the gas pipe 21 and the oxygen in the oxygen pipe 22 are mixed and then are supplied to the annular pipe 10 according to a set flow; after delaying for 5s, the control module 60 gives an ignition instruction to enable the igniter 12 to send out ignition sparks so as to ignite the six flame nozzles 11, so that the six uniformly distributed flame nozzles 11 uniformly heat the pipeline to be welded, and when a worker adds a proper brazing material to the welding point, one pipeline welding is completed;
step five: after the pipeline is welded, the movable handle 30 is pressed again, so that the first induction sheet and the second induction sheet which are positioned at the two ends of the annular fire blocking sheet 15 are separated, an induction feedback signal is generated and sent to the control module 60, the control module 60 controls the electromagnetic valve to be closed so as to cut off the gas channel 20, the heating flame is automatically extinguished after the gas is cut off, and then the welded pipeline is moved out of the annular pipe fitting 10;
step six: if the welding device 100 needs to continue working, repeating the operations from the first step to the fifth step; when the welding apparatus 100 is not in use, the switch 40 is turned off, and the movable handle 30 is released, so that the elastic member 80 is reset.
The embodiment designs a welding device 100 for pipelines, and designs six flame spray heads 11 which are uniformly distributed along an annular pipe fitting 10, so that the pipelines can be uniformly heated when being welded, and good welding quality is ensured. And controls the welding device 100 to ignite and shut off the fire through pressure induction, thereby achieving the effect of saving energy. In addition, the flow of oxygen, natural gas/acetylene and the like is controlled by the electromagnetic valve, so that the flame length of the flame nozzle 11 is moderate, and the annular fire blocking piece 15 positioned on the outer ring of the welding device 100 can reduce the risk of burning electric devices and cables.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. The pipeline welding device is characterized by comprising an annular pipe fitting, wherein a plurality of flame spray heads are arranged on the annular pipe fitting at intervals;
the plurality of flame spray nozzles extend towards the center of the annular pipe fitting, and define a space for placing pipelines to be welded, and the plurality of flame spray nozzles are controlled to be simultaneously ignited to weld the pipelines to be welded.
2. The welding device of claim 1, further comprising:
the gas channel is communicated with the annular pipe fitting and is used for conveying ignition gas to the annular pipe fitting;
and the control valve is arranged at the gas channel and used for controlling the on-off of the gas channel.
3. The welding device of claim 2, further comprising an annular flame arrestor disposed at an outer periphery of the annular tube.
4. The welding device of claim 3, wherein the annular firestop sheet has first and second opposed ends, the first and second ends being configured to controllably separate and close, the annular firestop sheet being configured to be a continuous ring when the first and second ends are closed;
the first and second ends are configured to send a disconnect signal to the control valve when disconnected such that the control valve controls the gas passage to be disconnected;
the first and second ends are configured to send a close signal to the control valve when closed such that the control valve controls the gas passage conductance.
5. The welding device of claim 4, wherein the annular firestop plate comprises a first portion having the first end and a third end and a second portion having the second end and a fourth end, the third end and the fourth end being slidably connected.
6. The welding device of claim 5, further comprising:
and the movable handle is connected with the second part and used for driving the fourth end of the second part to slide along the third end of the first part under the action of external force, so that the first end of the first part is separated from or closed with the second end of the second part.
7. Welding device according to claim 6,
the gas channel is connected to the first portion near the third end;
the movable handle is connected to the second portion proximate the fourth end and is disposed adjacent the gas passage.
8. The welding device of claim 6, further comprising:
and the control module is connected with the control valve and used for controlling the opening and closing of the control valve.
9. The welding device of claim 8, further comprising:
the pressure sensor is provided with a first sensing piece and a second sensing piece and is connected with the control module, the first sensing piece is arranged at the first end, the second sensing piece is arranged at the second end, and the control module is configured to control the control valve to be opened when the first sensing piece and the second sensing piece are closed and to be closed when the first sensing piece and the second sensing piece are separated.
10. The welding device of claim 7, further comprising:
one end of the elastic piece is connected with the movable handle, and the other end of the elastic piece is connected with the gas channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211027780.XA CN115338510A (en) | 2022-08-25 | 2022-08-25 | Welding device for pipelines |
| PCT/CN2023/114001 WO2024041478A1 (en) | 2022-08-25 | 2023-08-21 | Welding device for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211027780.XA CN115338510A (en) | 2022-08-25 | 2022-08-25 | Welding device for pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115338510A true CN115338510A (en) | 2022-11-15 |
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ID=83954182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211027780.XA Pending CN115338510A (en) | 2022-08-25 | 2022-08-25 | Welding device for pipelines |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115338510A (en) |
| WO (1) | WO2024041478A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041478A1 (en) * | 2022-08-25 | 2024-02-29 | 合肥海尔电冰箱有限公司 | Welding device for pipeline |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0613142B2 (en) * | 1987-03-31 | 1994-02-23 | 勇治郎 玉木 | Gas welding equipment |
| JP2001330216A (en) * | 2000-05-25 | 2001-11-30 | Yamada Gas Assetsu Kogyo:Kk | Ring burner for gas pressure welding of reinforcing bar |
| CN202021412U (en) * | 2011-03-31 | 2011-11-02 | 郑奶谷 | Ring-pipe type heater |
| CN102139395A (en) * | 2011-03-31 | 2011-08-03 | 郑奶谷 | Annular tube type heater |
| KR20120129406A (en) * | 2011-05-20 | 2012-11-28 | 정환익 | The capture device spatter |
| CN202162515U (en) * | 2011-07-29 | 2012-03-14 | 安徽鸿路钢结构(集团)股份有限公司 | Heater used for preheating before welding |
| KR101899359B1 (en) * | 2017-01-23 | 2018-10-29 | 권영진 | Welding torch structure for pipe welding |
| CN210548726U (en) * | 2019-08-19 | 2020-05-19 | 广东澳森热交换系统有限公司 | Flame welding device |
| CN111570966B (en) * | 2020-06-03 | 2024-03-15 | 大连华锐重工特种备件制造有限公司 | High-power remelting ring for flame spray welding and assembly method thereof |
| CN111889846B (en) * | 2020-06-20 | 2021-12-24 | 安徽美博智能科技有限公司 | Handheld spray gun copper pipe welding device for air conditioner production |
| CN115338510A (en) * | 2022-08-25 | 2022-11-15 | 合肥海尔电冰箱有限公司 | Welding device for pipelines |
-
2022
- 2022-08-25 CN CN202211027780.XA patent/CN115338510A/en active Pending
-
2023
- 2023-08-21 WO PCT/CN2023/114001 patent/WO2024041478A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041478A1 (en) * | 2022-08-25 | 2024-02-29 | 合肥海尔电冰箱有限公司 | Welding device for pipeline |
Also Published As
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| WO2024041478A1 (en) | 2024-02-29 |
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