A weld cooling device for large diameter nickel-iron based alloy piping and methods of use thereof

Abstract

This invention discloses a weld cooling device for large-diameter nickel-iron-based alloy pipes and its usage method, comprising an outer ring water pump, an outer ring water supply pipe, an outer ring support, an outer ring base, an outer ring body, a telescopic crossbeam, an outer ring clamp, an outer ring nozzle, an inner ring water supply pipe, an inner ring water pump, an inner ring body, an inner ring nozzle, an inner ring clamp, an inner ring support, an inner ring base, a core nozzle, a core water tank, a core pipe, a core pipe clamp, a core pipe support, a core base, a core water supply pipe, and a core water pump. This device employs synchronous water mist cooling of both the inner and outer walls, achieving synchronous, continuous, and uniform cooling of the weld's inner and outer walls. This effectively avoids localized overheating or uneven cooling, solving the problem of welding heat accumulation caused by the poor thermal conductivity of nickel-iron-based alloys. Furthermore, both the outer and inner rings are hollow structures except for the fixed positions of the connecting parts. After installation, the device can be used throughout the entire welding process until completion without needing to be removed midway, thus not interfering with the welding torch operation and significantly improving operational continuity.

Description

Technical Field

[0001] This invention belongs to the technical field of nickel-iron-based alloy welding equipment, specifically relating to a weld cooling device for large-diameter nickel-iron-based alloy pipelines and its usage method. Background Technology

[0002] Nickel-iron-based superalloys are widely used in pressure-bearing components such as large-diameter pipelines due to their excellent high-temperature strength, oxidation resistance, and corrosion resistance. However, these alloys generally have poor thermal conductivity (typically only 10-20 W / m·K at room temperature, far lower than the 40-50 W / m·K of ordinary carbon steel). During welding, the heat input is highly concentrated, and the alloy itself has difficulty in rapidly conducting and dissipating heat, causing a large accumulation of heat in the weld and heat-affected zone. This leads to coarse weld grains, decreased mechanical and creep resistance, and a tendency to develop hot cracks and liquefaction cracks, as well as problems such as local residual stress and welding deformation in the pipeline. Therefore, forced cooling measures must be taken during welding to remove excess heat from the weld area in a timely manner, control the peak temperature of the thermal cycle and the high-temperature residence time, thereby ensuring the microstructure and properties of the welded joint.

[0003] Given the poor thermal conductivity of nickel-iron-based alloys and the need for rapid cooling after welding, manual water cooling is currently the most common method used in engineering projects. This method is simple to implement and has some applicability in small-diameter pipe welding. However, for large-diameter pipes, manual water cooling has significant shortcomings: firstly, the cooling efficiency is low, as the long circumference of the pipe makes it difficult to ensure uniform cooling along the weld circumference, easily leading to localized overheating or uneven cooling; secondly, it is labor-intensive, requiring operators to work near high temperatures for extended periods, making them prone to improper cooling due to negligence; and thirdly, the flow rate and landing point of the cooling water are difficult to control precisely, and splashing water droplets may interfere with the welding arc and induce hydrogen-induced cracking. In some cases, mobile sprayers or compressed air water guns are used on-site, but these still rely on manual operation and cannot achieve continuous, uniform, and controllable cooling along the weld. Therefore, there is an urgent need to develop a device specifically designed for large-diameter nickel-iron-based alloy pipe welds that can achieve efficient and uniform forced cooling to replace the existing manual water cooling method. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a weld cooling device for large-diameter nickel-iron-based alloy pipes and its usage method. This invention can achieve continuous and uniform water mist cooling of the weld along the circumference of the pipe during the welding process, and the device does not need to be removed after installation until the welding is completed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A weld cooling device for large-diameter nickel-iron-based alloy pipes includes an outer ring water pump, an outer ring water pipe, an outer ring support, an outer ring base, an outer ring body, a telescopic crossbeam, an outer ring clamp, an outer ring nozzle, an inner ring water pipe, an inner ring water pump, an inner ring body, an inner ring nozzle, an inner ring clamp, an inner ring support, an inner ring base, a core nozzle, a core water tank, a core tube, a core tube clamp, a core tube support, a core base, a core water pipe, a core water pump, and an integrated switch. The outer ring body is an arc-shaped tube that serves as a guide and constraint in the ring structure; the inner ring body is sandwiched inside the outer ring body, and the arc-shaped wall that slides along the arc trajectory to complete the docking is the inner sliding component. The outer ring body is mounted on the outer ring base via an outer ring bracket, and the inner ring body is mounted on the inner ring base via an inner ring bracket; The outer ring body and the inner ring body are arc-shaped jacket sliding docking structures, which are fixed to the telescopic crossbeam by the outer ring clamp and the inner ring clamp respectively. The outer ring body is equipped with several outer ring nozzles, and the outer ring water pump is connected to the outer ring body through the outer ring water supply pipe. The inner ring body is equipped with several inner ring nozzles, and the inner ring water pump is connected to the inner ring body through the inner ring water supply pipe. The core water tank is equipped with several core nozzles. One end of the core tube is connected to the core water tank, and the other end is connected to the core tube clamp. It is also connected to the core water pump through the core water delivery pipe. The core tube clamp is set on the core base through the core tube bracket. The integrated switch is used to control the start and stop of the outer loop pump, inner loop pump, and core pump.

[0006] A further improvement of the present invention is that the outer ring body is a track-type semi-ring composed of two outer ring bends connected by a first bolt and an outer ring connector; the outer ring body is welded with the outer ring connector at three positions: 0°, 90° and 180° of the outer ring bend.

[0007] A further improvement of the present invention is that the inner ring body is a track-type semi-ring composed of an inner ring bend, an inner ring connector, and a second bolt.

[0008] A further improvement of the present invention is that the outer ring body and the inner ring body are respectively adjusted in width through the outer ring connector and the inner ring connector.

[0009] A further improvement of the present invention is that the outer ring nozzle, the inner ring nozzle, and the core nozzle are all spin-type nozzles of the same specification; the nozzles are connected to the corresponding positions of the corresponding pipes via external threads.

[0010] A further improvement of the present invention is that the spun nozzle includes a liquid filter, a filter base, a nozzle housing, a swirl core, a nozzle insert, and an atomizing nozzle. The liquid filter is threaded to the filter base, and the filter base is fixed to the upper part of the nozzle housing by threads; the swirl core is axially limited and assembled in the middle cavity of the nozzle housing; the nozzle insert is press-fitted into the center hole of the atomizing nozzle; and the atomizing nozzle is threaded to the lower part of the nozzle housing, thereby achieving axial positioning and pressing of the nozzle insert and the swirl core.

[0011] A further improvement of the present invention is that the core tube is a multi-segment sleeve to facilitate position adjustment.

[0012] A further improvement of the present invention is that, during the cooling process, the outer ring body and the inner ring body are first aligned with the weld seam to be cooled, and the core water tank is inserted into the weld seam position on the inner wall of the pipe to be cooled. The water pumps in each part are then started, so that the inner and outer walls of the weld seam can be cooled simultaneously.

[0013] A further improvement of the present invention is that, in use, multiple cooling devices can be used simultaneously for welds at different locations to achieve weld cooling for piping or other large equipment.

[0014] A method for using a weld cooling device for large-diameter nickel-iron-based alloy pipes includes: before welding, moving the outer ring base and inner ring base to the vicinity of the weld to be welded, adjusting the height of the outer ring support and inner ring support so that the distance between the outer ring body and the inner ring body and the weld to be welded is between 200 and 500 mm, and after the position is determined, according to the outer diameter of the butt welded pipe and the erection height, loosening the outer ring clamp and inner ring clamp, adjusting the telescopic beam to match the weld width, and at the same time pulling the outer ring body and inner ring body to unfold into a circle that completely covers the circumference of the weld, so as to ensure uniform cooling effect; When adjusting the device, move the core base to the straight pipe opening of the weld pipe, and align the core tube with the center of the weld pipe by adjusting the height of the core tube clamp and core tube support. After alignment, adjust the position of the core tube back and forth so that the core nozzle and core water tank can be aligned with the inner wall of the weld seam to be welded. After the cooling device is installed, welding begins. When the interlayer temperature exceeds the maximum temperature specified in the welding procedure document, the welder stops work and starts the outer ring water pump, inner ring water pump, and core water pump via an integrated switch. Cooling water is then fed into the corresponding nozzles through the outer ring water pipe, inner ring water pipe, and core water pipe to spray water mist and begin cooling. When the temperature drops to the minimum temperature at which welding can begin, the water pumps are turned off, the water spraying stops, and the welder continues welding. This cycle repeats continuously, achieving a "welding-cooling-welding" cycle.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: This invention discloses a weld cooling device and its application method for large-diameter nickel-iron-based alloy pipelines. It employs water mist cooling, with external and core nozzles arranged circumferentially along the pipeline weld seam to achieve synchronous, continuous, and uniform cooling of the inner and outer walls of the weld. This effectively avoids localized overheating or uneven cooling, solving the problem of welding heat accumulation caused by the poor thermal conductivity of nickel-iron-based alloys. The cooling efficiency of water mist is significantly higher than that of simple water cooling. Both the outer and inner ring bodies are hollow structures except for the fixed positions of the connecting parts. After installation, the device can be used throughout the entire welding process until completion without midway, thus not interfering with welding torch operation and significantly improving operational continuity. The design of the telescopic crossbeam and multi-section sleeve core tube allows for flexible adjustment of the width of the cooling ring and the position of the core nozzles, making it suitable for pipelines of different diameters. Multiple devices can be used simultaneously to meet the weld cooling needs of piping or large equipment. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the cross-section of the cooling water pipe; Figure 3 This is a schematic diagram of the cooling water pipe connections; Figure 4 This is a schematic diagram of the main body adjustment of the cooling device; Figure 5 This is a schematic diagram of a spinning water mist nozzle; Figure 6 This is a schematic diagram of a single cooling unit used for straight pipe butt welding; Figure 7 This is a schematic diagram of multiple cooling devices used for welding straight pipes and fittings.

[0018] Explanation of reference numerals in the attached figures: 1 Outer ring water pump, 2 Outer ring water pipe, 3 Outer ring bracket, 4 Outer ring base, 5 Outer ring body, 6 Telescopic crossbeam, 7 Outer ring clamp, 8 Outer ring nozzle, 9 Inner ring water pipe, 10 Inner ring water pump, 11 Inner ring body, 12 Inner ring nozzle, 13 Inner ring clamp, 14 Inner ring bracket, 15 Inner ring base, 16 Core nozzle, 17 Core water tank, 18 Core pipe, 19 Core pipe clamp, 20 Core pipe bracket, 21 Core base, 22 Core water pipe, 23 Core water pump; 51 Outer ring bend, 52 Outer ring connector, 53 First bolt, 8 Outer ring nozzle, 11 Inner ring body, 111 Inner ring bend, 112 Inner ring connector, 113 Second bolt; 81 Liquid filter, 82 Filter base, 83 Nozzle housing, 84 Swirl core, 85 Nozzle insert, 86 Atomizing nozzle. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] Example 1 like Figures 1-6As shown, the present invention provides a weld cooling device for large-diameter nickel-iron-based alloy pipes, comprising an outer ring water pump 1, an outer ring water supply pipe 2, an outer ring support 3, an outer ring base 4, an outer ring body 5, a telescopic crossbeam 6, an outer ring clamp 7, an outer ring nozzle 8, an inner ring water supply pipe 9, an inner ring water pump 10, an inner ring body 11, an inner ring nozzle 12, an inner ring clamp 13, an inner ring support 14, an inner ring base 15, a core nozzle 16, a core water tank 17, a core tube 18, a core tube clamp 19, a core tube support 20, a core base 21, a core water supply pipe 22, a core water pump 23, and an integrated switch 24; wherein the outer ring body 5 is an arc-shaped tube that serves as a guide and constraint in the annular component; the inner ring body 11 is sandwiched inside the outer ring body 5 and slides along an arc-shaped trajectory to complete the docking, which is an inner sliding component.

[0029] The outer ring body 5 is mounted on the outer ring base 4 via the outer ring bracket 3, and the inner ring body 11 is mounted on the inner ring base 15 via the inner ring bracket 14. The outer ring body 5 and the inner ring body 11 are arc-shaped jacket sliding docking structures, which are fixed to the telescopic crossbeam 6 by the outer ring clamp 7 and the inner ring clamp 13 respectively. The outer ring body 5 is provided with a number of outer ring nozzles 8, and the outer ring water pump 1 is connected to the outer ring body 5 through the outer ring water supply pipe 2. The inner ring body 11 is provided with a number of inner ring nozzles 12, and the inner ring water pump 10 is connected to the inner ring body 11 through the inner ring water supply pipe 9. The core water tank 17 is equipped with several core nozzles 16. One end of the core tube 18 is connected to the core water tank 17, and the other end is connected to the core tube clamp 19. It is also connected to the core water pump 23 through the core water supply pipe 22. The core tube clamp 19 is mounted on the core base 21 through the core tube bracket 20.

[0030] The outer ring body 5 is a track-type semi-ring composed of two outer ring bends 51 connected by a first bolt 53 and an outer ring connector 52; the outer ring body 5 has the outer ring connector 52 welded at three positions: 0°, 90° and 180° on the outer ring bends 51; the inner ring body 11 is a track-type semi-ring composed of an inner ring bend 111, an inner ring connector 112 and a second bolt 113.

[0031] The outer ring body 5 and the inner ring body 11 are respectively adjusted in width through the outer ring connector 52 and the inner ring connector 112.

[0032] The outer ring nozzle 8, inner ring nozzle 12, and core nozzle 16 are all spin-type nozzles of the same specification; the nozzles are connected to the corresponding positions of the corresponding pipes via external threads. The swirl nozzle includes a liquid filter 81, a filter base 8, a nozzle housing 83, a swirl core 84, a nozzle insert 85, and an atomizing nozzle 86.

[0033] The liquid filter 81 is threadedly connected to the filter base 82, and the filter base 82 is fixed to the upper part of the nozzle housing 83 by threads; the swirl core 84 is axially limited and assembled in the middle cavity of the nozzle housing 83; the nozzle insert 85 is press-fitted into the center hole of the atomizing nozzle 86, and the atomizing nozzle 86 is threadedly connected to the lower part of the nozzle housing 83, thereby achieving axial positioning and pressing of the nozzle insert 85 and the swirl core 84.

[0034] The core tube 18 is a multi-section sleeve to facilitate position adjustment.

[0035] When the large-diameter high-temperature alloy pipeline weld cooling device is used for cooling, the outer ring body 5 and the inner ring body 11 are first aligned with the weld to be cooled, and the core water tank 17 is inserted into the weld position on the inner wall of the pipeline to be cooled. The water pumps in each part are then started to achieve simultaneous cooling of the inner and outer walls of the weld.

[0036] The specific working process of this invention is as follows: Before welding nickel-iron alloy straight pipes with an OD466mm×70mm diameter, move the outer ring base 4 and inner ring base 15 to the vicinity of the weld seam to be welded. Adjust the height of the outer ring support 3 and inner ring support 14 so that the outer ring body 5 and inner ring body 11 are 200~500mm away from the weld seam to be welded. After the position is determined, according to the outer diameter of the pipe to be welded and the erection height, loosen the outer ring clamp 7 and inner ring clamp 13, adjust the telescopic beam 6 to match the weld seam width, and at the same time pull the outer ring body 5 and inner ring body 11 to unfold them into a circle that can completely cover the circumference of the weld seam to ensure uniform cooling effect.

[0037] When the core base 21 is outside the adjustment device, it can be moved to the straight pipe opening of the butt weld pipe. The core tube 18 is aligned with the center of the butt weld pipe by adjusting the height of the core tube clamp 19 and the core tube support 20. After alignment, the position of the core tube is adjusted back and forth so that the core nozzle 16 and the core water tank 17 can be aligned with the inner wall of the weld to be welded.

[0038] After the cooling device is installed, welding begins. When the interpass temperature exceeds the maximum temperature specified in the welding procedure document, the welder stops work and activates the outer ring water pump 1, inner ring water pump 10, and core water pump 23 via integrated switch 24. Cooling water is then supplied to the corresponding nozzles through the outer ring water pipe 2, inner ring water pipe 9, and core water pipe 22, spraying water mist to begin cooling. When the temperature drops to the minimum acceptable temperature for welding, the water pumps are turned off, stopping the water spray, and the welder continues welding. This cycle repeats continuously, achieving a "welding-cooling-welding" cycle. Example 2 like Figures 1-7As shown, the present invention provides a weld cooling device for large-diameter nickel-iron-based alloy pipes, comprising an outer ring water pump 1, an outer ring water supply pipe 2, an outer ring support 3, an outer ring base 4, an outer ring body 5, a telescopic crossbeam 6, an outer ring clamp 7, an outer ring nozzle 8, an inner ring water supply pipe 9, an inner ring water pump 10, an inner ring body 11, an inner ring nozzle 12, an inner ring clamp 13, an inner ring support 14, an inner ring base 15, a core nozzle 16, a core water tank 17, a core tube 18, a core tube clamp 19, a core tube support 20, a core base 21, a core water supply pipe 22, and a core water pump 23.

[0039] The outer ring body 5 is a track-type semi-ring composed of two outer ring bends 51 connected by a first bolt 53 and an outer ring connector 52. The outer ring body 5 has the outer ring connector 52 welded only at the 0°, 90°, and 180° positions of the outer ring bends 51; the other positions are open. The inner ring body 11 consists of an inner ring bend 111, an inner ring connector 112, and a second bolt 113, with the same structure as the outer ring. The outer ring body 5 and the inner ring body 11 are fixed to the telescopic crossbeam 6 by an outer ring clamp 7 and an inner ring clamp 13. Width adjustment can be achieved by combining the outer ring connector 52 and the inner ring connector 112.

[0040] The outer ring nozzle 8, inner ring nozzle 12, and core nozzle 16 are all spun-type nozzles of the same specification. It includes a liquid filter 81, a filter base 8, a nozzle housing 83, a swirl core 84, a nozzle insert 85, and an atomizing nozzle 86.

[0041] The outer ring body 5 and the inner ring body 11 are hollow except for the fixed position of their connecting parts, meaning that the device does not need to be disassembled after installation and before welding is completed.

[0042] The core tube 18 is a multi-section sleeve to facilitate position adjustment.

[0043] When the large-diameter high-temperature alloy pipeline weld cooling device is used for cooling, the outer ring body 5 and the inner ring body 11 are first aligned with the weld to be cooled, and the core water tank 17 is inserted into the weld position on the inner wall of the pipeline to be cooled. The water pumps in each part are then started to achieve simultaneous cooling of the inner and outer walls of the weld.

[0044] The specific working process of this invention is as follows: Before welding two OD833mm×72mm nickel-iron alloy straight pipes to a 90° elbow of the same specification, move the outer ring base 4 and inner ring base 15 to the vicinity of the weld seam to be welded. Adjust the height of the outer ring support 3 and inner ring support 14 so that the outer ring body 5 and inner ring body 11 are 200~500mm away from the weld seam to be welded. After the position is determined, according to the outer diameter of the pipe to be welded and the erection height, loosen the outer ring clamp 7 and inner ring clamp 13, adjust the telescopic beam 6 to match the weld seam width, and at the same time pull the outer ring body 5 and inner ring body 11 to unfold into a circle that can completely cover the circumference of the weld seam to ensure uniform cooling effect.

[0045] When the core base 21 is outside the adjustment device, it can be moved to the straight pipe opening of the butt weld pipe. The core tube 18 is aligned with the center of the butt weld pipe by adjusting the height of the core tube clamp 19 and the core tube support 20. After alignment, the position of the core tube is adjusted back and forth so that the core nozzle 16 and the core water tank 17 can be aligned with the inner wall of the weld to be welded.

[0046] After the cooling device is installed, welding begins. When the interpass temperature exceeds the maximum temperature specified in the welding procedure document, the welder stops work and activates the outer ring water pump 1, inner ring water pump 10, and core water pump 23 via integrated switch 24. Cooling water is then supplied to the corresponding nozzles through the outer ring water pipe 2, inner ring water pipe 9, and core water pipe 22, spraying water mist to begin cooling. When the temperature drops to the minimum acceptable temperature for welding, the water pumps are turned off, stopping the water spray. The welder then continues welding, repeating the cycle of "welding-cooling-welding".

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A weld cooling device for large-diameter nickel-iron-based alloy pipes, characterized in that, It includes an outer ring water pump (1), an outer ring water pipe (2), an outer ring bracket (3), an outer ring base (4), an outer ring body (5), a telescopic crossbeam (6), an outer ring clamp (7), an outer ring nozzle (8), an inner ring water pipe (9), an inner ring water pump (10), an inner ring body (11), an inner ring nozzle (12), an inner ring clamp (13), an inner ring bracket (14), an inner ring base (15), a core nozzle (16), a core water tank (17), a core tube (18), a core tube clamp (19), a core tube bracket (20), a core base (21), a core water pipe (22), a core water pump (23), and an integrated switch (24). The outer ring body (5) is an arc-shaped tube that serves as a guide and constraint in the ring structure; the inner ring body (11) is sandwiched inside the outer ring body (5), and the arc-shaped wall that slides along the arc trajectory to complete the docking is the inner sliding member; The outer ring body (5) is mounted on the outer ring base (4) via the outer ring bracket (3), and the inner ring body (11) is mounted on the inner ring base (15) via the inner ring bracket (14); The outer ring body (5) and the inner ring body (11) are arc-shaped jacket sliding docking structures, which are fixed to the telescopic crossbeam (6) by the outer ring clamp (7) and the inner ring clamp (13) respectively. The outer ring body (5) is provided with several outer ring nozzles (8), and the outer ring water pump (1) is connected to the outer ring body (5) through the outer ring water supply pipe (2). The inner ring body (11) is provided with several inner ring nozzles (12), and the inner ring water pump (10) is connected to the inner ring body (11) through the inner ring water supply pipe (9). The core water tank (17) is equipped with several core nozzles (16). One end of the core tube (18) is connected to the core water tank (17), and the other end is connected to the core tube clamp (19). It is connected to the core water pump (23) through the core water delivery pipe (22). The core tube clamp (19) is set on the core base (21) through the core tube bracket (20). An integrated switch (24) is used to control the start and stop of the outer ring pump (1), the inner ring pump (10) and the core pump (23).

2. The weld cooling device for large-diameter nickel-iron-based alloy pipelines according to claim 1, characterized in that, The outer ring body (5) is a track-type semi-ring composed of two outer ring bends (51) connected by a first bolt (53) and an outer ring connector (52); the outer ring body (5) has the outer ring connector (52) welded at three positions of 0°, 90° and 180° on the outer ring bends (51).

3. The weld cooling device for large-diameter nickel-iron-based alloy pipelines according to claim 2, characterized in that, The inner ring body (11) is a track-type semi-ring composed of an inner ring bend (111), an inner ring connector (112), and a second bolt (113).

4. A weld cooling device for large diameter nickel-iron based alloy pipe according to claim 3, characterized by The outer ring body (5) and the inner ring body (11) achieve width adjustment through the outer ring connector (52) and the inner ring connector (112), respectively.

5. The weld cooling device for large diameter nickel-iron based alloy pipes according to claim 1, characterized by, The outer ring nozzle (8), inner ring nozzle (12) and core nozzle (16) are all spinning nozzles of the same specification; the nozzles are connected to the corresponding positions of the corresponding pipes by external threads.

6. A weld cooling device for large diameter nickel-iron based alloy pipe according to claim 5, characterized by The swirl nozzle includes a liquid filter (81), a filter base (8), a nozzle housing (83), a swirl core (84), a nozzle insert (85), and an atomizing nozzle (86). The liquid filter (81) is threaded to the filter base (82), and the filter base (82) is fixed to the upper part of the nozzle housing (83) by threads; the swirl core (84) is axially limited and assembled in the middle cavity of the nozzle housing (83); the nozzle insert (85) is pressed into the center hole of the atomizing nozzle (86), and the atomizing nozzle (86) is threaded to the lower part of the nozzle housing (83), thereby realizing the axial positioning and pressing of the nozzle insert (85) and the swirl core (84).

7. A weld cooling device for large diameter ferronickel alloy pipes according to claim 1, characterized in that, The core tube (18) is a multi-section sleeve to facilitate position adjustment.

8. A weld cooling device for large diameter nickel-iron based alloy pipes as claimed in claim 1, wherein, When performing cooling work, first align the outer ring body (5) and the inner ring body (11) with the weld to be cooled, and at the same time insert the core water tank (17) into the weld position of the inner wall of the pipe to be cooled, and start the water pumps in each part to achieve simultaneous cooling of the inner and outer walls of the weld.

9. A weld cooling device for large diameter nickel-iron based alloy pipes as claimed in claim 1, wherein, When in use, multiple units of this cooling device can be used simultaneously for welds in different locations to achieve cooling of welds in piping or other large equipment.

10. A method of using a weld cooling device for large diameter nickel-iron based alloy pipe according to any one of claims 1 to 9, characterized in that, include: Before welding, move the outer ring base (4) and inner ring base (15) to the vicinity of the weld to be welded, adjust the height of the outer ring bracket (3) and inner ring bracket (14) so ​​that the outer ring body (5) and inner ring body (11) are 200~500mm away from the weld to be welded. After the position is determined, according to the outer diameter of the butt welded pipe and the erection height, loosen the outer ring clamp (7) and inner ring clamp (13), adjust the telescopic beam (6) to match the weld width, and at the same time pull the outer ring body (5) and inner ring body (11) to unfold into a circle that completely covers the circumference of the ring weld to ensure uniform cooling effect. When the adjustment device is outside, move the core base (21) to the straight pipe opening of the butt weld pipe, and use the height of the core pipe clamp (19) and the core pipe bracket (20) to align the core pipe (18) with the center of the butt weld pipe. After alignment, adjust the position of the core pipe back and forth so that the core nozzle (16) and the core water tank (17) can be aligned with the inner wall of the weld to be welded. After the cooling device is installed, welding begins. When the interlayer temperature exceeds the maximum temperature in the welding process document, the welder stops working and starts the outer ring water pump (1), inner ring water pump (10), and core water pump (23) through the integrated switch (24). Cooling water is fed into the corresponding nozzles through the outer ring water pipe (2), inner ring water pipe (9), and core water pipe (22) to spray water mist to start cooling. When the temperature drops to the lowest temperature at which welding can begin, the water pump is turned off and the water spraying stops. The welder continues welding, and the cycle of "welding-cooling-welding" is repeated.

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