Modular welding synchronous cooling device
The modular welding synchronous cooling device solves the problem of heat diffusion difficulties in welding austenitic stainless steel and titanium alloys, achieving a highly efficient and stable cooling effect. It is suitable for a variety of welded workpieces, avoids the introduction of hydrogen, and improves welding efficiency and operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-20
AI Technical Summary
During the welding process of austenitic stainless steel and titanium alloys, the heat dissipation is difficult, resulting in coarse weld grains. Furthermore, existing cooling methods are unstable and easily introduce hydrogen, making them particularly unsuitable for titanium alloys.
A modular welding synchronous cooling device is designed, which uses multiple cooling modules and connecting pipes to form a continuous cooling channel. The cooling medium is provided by a cooling medium source. The cooling modules are made of aluminum alloy, and the connecting parts are positioning pins and connecting plates. Flexible metal corrugated pipes are used for connection to adapt to different pipe diameters and welding areas.
It achieves efficient and stable welding cooling, avoids the introduction of hydrogen, is suitable for various welding scenarios, improves welding efficiency, suppresses grain coarsening, and improves the operating environment.
Smart Images
Figure CN224011502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding cooling technology, and in particular to a modular welding synchronous cooling device. Background Technology
[0002] Austenitic stainless steel, with its excellent high and low temperature performance and high resistance to hydrogen, is widely used in key components of hydrogen transportation pipelines, chemical reactors near hydrogen, and nuclear power units. Titanium alloys, due to their corrosion resistance and high specific strength, are widely used in the aerospace industry.
[0003] However, both of these materials share a common problem when welded: low thermal conductivity, making heat dissipation difficult and resulting in coarse weld grains. This affects the overall toughness of the final structure. Furthermore, austenitic stainless steels exhibit a tendency for intergranular chromium depletion between 450-850℃, leading to a near-complete loss of toughness and posing significant safety hazards to the welded areas. Therefore, controlling the material temperature during welding is crucial for the welding of these two types of materials.
[0004] Currently, common cooling methods include: 1. using a wet towel; 2. pouring cold water on the solidified material; 3. For some factory welding operations, after the root pass is completed, the container to be welded can be sealed and filled with water for cooling. However, all of these methods have limitations. The wet towel and cold water processes are unstable and greatly affected by the operator's experience and technique; water cooling requires easily sealable containers and cannot be used for pipes or large containers. Furthermore, all of these methods introduce hydrogen near the welding location, making them unsuitable for welding titanium alloys. Utility Model Content
[0005] This invention proposes a modular welding synchronous cooling device to address the shortcomings of the prior art. This modular welding synchronous cooling device has high cooling efficiency and stable process, and is suitable for welding cooling of most pipes, containers, and flat workpieces for in-plant welding and field welding. It also avoids the introduction of hydrogen and is suitable for welding titanium alloys.
[0006] The technical solution of this utility model is: a modular welding synchronous cooling device for welding cooling of workpieces, comprising:
[0007] Multiple cooling modules, each equipped with a coolant flow channel, are arranged side-by-side on the side of the workpiece weld.
[0008] Multiple connecting pipes are respectively arranged between two parallel cooling modules, and the two ends of each connecting pipe are respectively connected to the coolant flow channels of the two parallel cooling modules, so that the coolant flow channels in the multiple cooling modules form a continuous cooling channel.
[0009] A cooling medium source is connected to the coolant flow channel. The cooling medium source is used to introduce cooling medium into the coolant flow channel so that the cooling medium flows through the entire cooling channel.
[0010] In at least one embodiment of the present invention, the coolant flow channel in each cooling module is U-shaped or straight.
[0011] In at least one embodiment of this utility model, the cooling module is made of aluminum alloy, and the contact surface between the cooling module and the workpiece matches the outer surface of the workpiece.
[0012] In at least one embodiment of the present invention, two pairs of threaded holes are provided on both sides of the plurality of cooling modules, and two connectors are provided between two parallel cooling modules. The two connectors are located on both sides of the cooling modules respectively. The connectors include two positioning pins and connecting pieces. The two positioning pins are threaded into the threaded holes of two adjacent cooling modules respectively. The connecting pieces are provided with connecting tubes fitted on the positioning pins on both sides.
[0013] In at least one embodiment of this utility model, the connecting pipe is a flexible metal corrugated pipe.
[0014] In at least one embodiment of the present invention, the coolant channels on the plurality of cooling modules are perpendicular to the weld direction of the workpiece.
[0015] In at least one embodiment of this utility model, the overall flow direction of the coolant in the multiple cooling modules on both sides of the workpiece weld is the same as the welding advance direction of the workpiece.
[0016] In at least one embodiment of the present invention, a plurality of cooling modules are arranged side by side on one or both sides of the workpiece weld.
[0017] The beneficial effects of this utility model are:
[0018] This utility model provides a modular welding synchronous cooling device for welding austenitic stainless steel, titanium alloy and other low thermal conductivity materials that are not easy to quench. It is applicable to most in-plant and field welding modular welding synchronous cooling devices.
[0019] 1. This utility model, by setting up a cooling module, connecting pipe, and cooling medium source, allows the cooling module to be arranged on one or both sides of the weld seam on the workpiece surface during use. During the welding process, the cooling medium is introduced into the coolant channel through the cooling medium source, so that the cooling medium flows through the entire cooling channel, thereby removing the heat from the workpiece during welding. It can cool the workpiece over a wide area and achieve a better cooling effect. Due to its modular design, this welding synchronous cooling device is more flexible in its layout and is suitable for welding cooling of most pipes, containers, and flat workpieces that are welded in the factory or on-site. Furthermore, the cooling water does not come into direct contact with the workpiece during the welding process, avoiding the introduction of hydrogen, making it suitable for welding titanium alloys.
[0020] 2. In order to achieve better cooling effect when cooling pipes with small diameter, this utility model designs the contact surface between the cooling module and the workpiece to match the outer surface of the workpiece, so as to optimize the contact effect, increase the cooling effect, improve welding efficiency, suppress grain coarsening, reduce the residence time in the sensitive temperature range of chromium depletion between grains, and improve the working environment of welding operators.
[0021] 3. This utility model provides a connecting device consisting of positioning pins and connecting plates at both ends of the cooling module. When using this device, the corresponding cooling modules can be added or removed according to different pipe diameters or welding area lengths, and the cooling modules can be stably connected into one unit. The cooling modules can all rotate with the positioning pins as the pivot, so that the synchronous welding cooling device can be adapted to the welding cooling of various types of workpieces.
[0022] 4. This utility model connects the cooling modules with flexible metal shell corrugated pipes, which is not limited by rigid connections and is protected from damage by welding heat and spatter, ensuring free switching between different pipe diameters. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the U-shaped cooling module assembly structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the linear cooling module assembly structure of this utility model;
[0025] Figure 3 This is a schematic diagram of the U-shaped cooling module structure of this utility model;
[0026] Figure 4 This is a schematic diagram of the linear cooling module structure of this utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Workpiece; 2. Cooling module; 21. Cooling channel; 3. Connecting pipe; 4. Connecting component. Detailed Implementation
[0029] The accompanying drawings in this invention are not strictly drawn to scale; the specific dimensions and quantity of each structure can be determined according to actual needs. The drawings described in this invention are merely structural schematic diagrams.
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0031] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "inner," "outer," "upper," "lower," "far," "near," "front," and "rear" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0032] The commonly used cooling methods are as follows: 1. Cooling with a wet towel; 2. Cooling by splashing cold water after solidification; 3. For some welding in factories, after the root pass is completed, the container to be welded can be sealed and filled with water to cool it down.
[0033] Each of the above methods has its limitations. The wet towel and cold water pouring processes are unstable and greatly affected by the operator's experience and operating techniques. Water cooling requires a container that can be easily sealed, and this method cannot be used for cooling during the root pass welding. It is not suitable for pipes and large containers. In addition, all of the above methods will introduce hydrogen near the welding position, which is not suitable for welding titanium alloys.
[0034] In view of this, the present invention proposes a modular welding synchronous cooling device, which has high cooling efficiency and stable process. It can perform synchronous cooling while welding and is suitable for most pipes, containers, flat workpieces, etc., which are welded in the factory and on the field. Moreover, the device is a universal cooling module modular design, which is convenient for quick adjustment when changing workpiece specifications.
[0035] Combination Figures 1 to 4As shown, a modular welding synchronous cooling device is used for welding cooling of workpiece 1, comprising:
[0036] Each of the multiple cooling modules 2 is provided with a coolant flow channel 21, and the multiple cooling modules 2 are arranged side by side on the side of the weld of the workpiece 1; the multiple cooling modules 2 are arranged along the weld direction of the workpiece 1.
[0037] Multiple connecting pipes 3 are respectively arranged between two parallel cooling modules 2, and the two ends of each connecting pipe 3 are respectively connected to the coolant flow channels 21 of the two parallel cooling modules 2, so that the coolant flow channels 21 in the multiple cooling modules 2 form a continuous cooling channel.
[0038] The cooling medium source is connected to the coolant flow channel 21. The cooling medium source is used to introduce cooling medium into the coolant flow channel 21 so that the cooling medium flows through the entire cooling channel. The cooling medium of this device is water or other forms of cooling liquid.
[0039] As an alternative embodiment, the coolant flow channel 21 within each cooling module 2 is U-shaped or straight-lined. In use, the cooling module 2 is arranged perpendicularly to the weld seam on the surface of the workpiece 1 to be welded, causing the cooling water to flow back and forth in a serpentine pattern near the weld seam, increasing the cooling area and improving cooling efficiency. The inlet and outlet of the U-shaped cooling module 2 are both located away from the weld seam, while the pipe interfaces of the straight-line cooling module 2 are located at both ends. The water pipes are alternately arranged near and away from the weld seam, causing the cooling water to flow back and forth.
[0040] As an alternative embodiment, the cooling module 2 is made of aluminum alloy. The aluminum alloy cooling module 2 has good thermal conductivity and is relatively lightweight. The contact surface between the cooling module 2 and the workpiece 1 is matched with the outer surface of the workpiece 1 to optimize the contact effect, increase the cooling effect, improve welding efficiency, suppress grain coarsening, reduce the residence time in the sensitive temperature range of chromium depletion between grains, and improve the working environment of welding operators.
[0041] As an alternative embodiment, each of the multiple cooling modules 2 has two pairs of threaded holes on both sides, and two connectors 4 are provided between each pair of parallel cooling modules 2. The two connectors 4 are located on both sides of the cooling module 4. Each connector 4 includes two locating pins and a connecting piece. The two locating pins are threaded into the threaded holes of two adjacent cooling modules 2, and each connecting piece has a connecting tube fitted on both sides of the locating pin. The connector 4 can ensure a firm connection between the two cooling modules 2 while being able to rotate around a rotation axis to adapt to the matching requirements of different pipe diameters. When welding pipes with smaller diameters, in order to optimize the contact between the cooling module 2 and the workpiece 1 with a smaller radius of curvature, an inwardly concave arc surface can be machined on the contact surface.
[0042] As an alternative embodiment, the connecting pipe 3 is a flexible metal corrugated pipe to avoid damage to the water pipe from welding heat and splashes.
[0043] As an alternative embodiment, the coolant flow channels 21 on the multiple cooling modules 2 are perpendicular to the weld direction of the workpiece 1, so that a single cooling module 1 can stably remove more residual heat from the workpiece 1.
[0044] As an alternative embodiment, the overall flow direction of the coolant in the multiple cooling modules 2 on both sides of the weld of workpiece 1 is the same as the welding direction of workpiece 1. The low-temperature coolant can be used to cool the parts that are welded earlier and have lower temperatures, and the coolant temperature can be increased to cool the parts that are being welded and have higher temperatures.
[0045] As an alternative embodiment, multiple cooling modules 2 are arranged side by side on one or both sides of the weld of workpiece 1; workers can arrange them according to actual needs.
[0046] As an alternative embodiment, the cooling medium source includes a refrigeration system and a water circulation system, wherein the water circulation system may be a water pump and the refrigeration system may be a semiconductor refrigeration chip.
[0047] Use case of this embodiment:
[0048] Taking the welding of a 273mm pipe butt ring weld as an example, the pipe circumference is 857mm. Forty-two 40mm wide U-shaped cooling modules 2 are divided into two groups, left and right, and arranged on the left and right sides of the weld, respectively, so that the water pipe interfaces all face away from the weld. Without affecting the welding, the cooling modules 2 are positioned as close to the weld as possible. First, adjacent cooling modules 2 are connected and locked with pin holes in sequence. After connecting 21 cooling modules 2 on each side, they are fixed to the outer wall of the pipe. An adjustable-length tail-end locking device is used to connect and lock the first and last cooling modules, ensuring that the cooling water inflow and final outflow positions are in the welding direction.
[0049] Connect one end of the cold water pipe to the outlet of the cold source, and the other end to the first cooling module 2 at the weld initiation point. Then connect adjacent cooling modules 2 sequentially using short pipes until the last module. Connect the outlet of the last cooling module 2 to the return port of the cooling medium source using a return pipe. Repeat the above steps to connect the pipes on the other side of the weld.
[0050] Before welding begins, turn on the cooling system and water circulation system of the cooling medium source. Once the cooling water flow is stable, begin the welding operation. After welding, keep the cooling system running for a period of time until the workpiece has completely cooled down. Then, turn off the cooling system and water circulation system and release the tail-end locking device.
[0051] If it is necessary to continue welding pipe seams of the same specification, simply place the entire cooling module directly on both sides of the next weld seam, lock the tail end locking device, and turn on the cooling medium source and circulation system.
[0052] If other weld specifications are required, the corresponding cooling modules can be added or removed according to the perimeter, while other operations remain the same.
[0053] If the pipe diameter is small, such as an 89mm pipe, use 13 straight cooling modules with a width of 20mm on each side, alternately connecting the two ends to form a meandering flow path. The rest of the operation is the same as that of the U-shaped module.
[0054] The above embodiments are merely specific implementations of this utility model patent, used to illustrate the technical solution of this utility model patent, and not to limit it. The protection scope of this utility model patent is not limited thereto. Although this utility model patent has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions implemented by this utility model patent, and should all be covered within the protection scope of this utility model.
Claims
1. A modular welding synchronous cooling device for welding cooling of workpiece (1), characterized in that, include: Multiple cooling modules (2) are provided, each having a coolant flow channel (21); the multiple cooling modules (2) are arranged side by side on the side of the weld of the workpiece (1); Multiple connecting pipes (3) are respectively arranged between two parallel cooling modules (2), and the two ends of each connecting pipe (3) are respectively connected to the coolant flow channels (21) of the two parallel cooling modules (2) so that the coolant flow channels (21) in the multiple cooling modules (2) form a continuous cooling channel. A cooling medium source is connected to the coolant flow channel (21). The cooling medium source is used to introduce cooling medium into the coolant flow channel (21) so that the cooling medium flows through the entire cooling channel.
2. The modular welding synchronous cooling device as described in claim 1, characterized in that, The coolant flow channel (21) in each of the cooling modules (2) is U-shaped or straight.
3. The modular welding synchronous cooling device as described in claim 1, characterized in that, The cooling module (2) is made of aluminum alloy, and the contact surface between the cooling module (2) and the workpiece (1) is matched with the outer surface of the workpiece (1).
4. The modular welding synchronous cooling device as described in claim 1, characterized in that, Each of the multiple cooling modules (2) has two pairs of threaded holes on both sides. Two connecting pieces (4) are provided between two parallel cooling modules (2). The two connecting pieces (4) are located on both sides of the cooling module (2). The connecting piece (4) includes two positioning pins and a connecting piece. The two positioning pins are threaded into the threaded holes of two adjacent cooling modules (2). The connecting piece has a connecting tube fitted on the positioning pin on both sides.
5. A modular welding synchronous cooling device as described in claim 1, characterized in that, The connecting pipe (3) is a flexible metal corrugated pipe.
6. The modular welding synchronous cooling device as described in claim 1, characterized in that, The coolant channels (21) on the multiple cooling modules (2) are perpendicular to the weld direction of the workpiece (1).
7. A modular welding synchronous cooling device as described in claim 6, characterized in that, The overall flow direction of the coolant in the multiple cooling modules (2) on both sides of the weld of the workpiece (1) is the same as the welding direction of the workpiece (1).
8. A modular welding synchronous cooling device as described in claim 1, characterized in that, Multiple cooling modules (2) are arranged side by side on one or both sides of the weld of the workpiece (1).