Rapid cooling device for elbow welding and elbow welding production line

Abstract

The utility model provides a rapid cooling device for elbow welding and an elbow welding production line, relates to the technical field of air conditioner production equipment, and solves the technical problem that in the prior art, after an elbow is welded, the cooling effect is not ideal due to the fact that natural cooling or air cooling is adopted. The rapid cooling device for elbow welding and the elbow welding production line comprise a refrigeration assembly, a supporting structure and a cooling spray head, the cooling spray head is arranged on the supporting structure and located above an elbow welding conveying line, the refrigeration assembly is connected with the cooling spray head, and a plurality of air spraying holes are formed in the cooling spray head. The utility model provides the quick cooling device for elbow welding and the elbow welding production line, which can improve the cooling effect and the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning production equipment, in particular to an elbow welding rapid cooling device and an elbow welding production line. Background Art

[0002] Elbow welding is a critical step in the production of air conditioning heat exchangers. However, the high temperature of the elbow after welding and the slow natural cooling rate not only affect production efficiency, but may also lead to insufficient strength and hardness of the welded parts, easily causing deformation and other problems, affecting product quality.

[0003] At present, the common cooling methods are mainly natural cooling or simple air cooling, but the cooling effect is not ideal and cannot meet the needs of efficient production. Utility Model Content

[0004] The purpose of this utility model is to provide a rapid cooling device for elbow welding and an elbow welding production line to address the technical problem in the prior art of unsatisfactory cooling effects of natural cooling or air cooling after elbow welding. The various technical effects of the preferred technical solution among the various technical solutions provided by this utility model are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a rapid cooling device for elbow welding, comprising a refrigeration component, a support structure and a cooling nozzle, wherein the cooling nozzle is arranged on the support structure and placed above the elbow welding conveying route, the refrigeration component is connected to the cooling nozzle, and a plurality of air injection holes are arranged on the cooling nozzle.

[0007] As an optional embodiment, the support structure includes a support column and a support rod, the support rod is arranged on the support column, the cooling nozzle is arranged at the first end of the support rod, and the refrigeration assembly is arranged at the second end of the support rod.

[0008] As an optional implementation, an adjustment assembly is provided between the support rod and the support column.

[0009] As an optional embodiment, the adjustment assembly includes a first clamp block and a second clamp block, the support rod is fixedly connected to the first clamp block, the second clamp block is provided with a through hole, the second clamp block is slidably set on the support rod through the through hole, and a fastener is connected to the first clamp block and the second clamp block to clamp the support column through the first clamp block and the second clamp block.

[0010] As an optional embodiment, the cooling nozzle is a hollow rectangular parallelepiped structure, and the air injection hole is provided on the bottom plate of the cooling nozzle;

[0011] And / or, the air jet holes are provided in at least four rows;

[0012] And / or, the air jet hole is a conical structure, and the small-diameter end of the conical structure faces the elbow on the elbow welding conveyor line.

[0013] As an optional implementation, the cooling nozzle is provided with an air inlet channel, and the refrigeration component is connected to the air inlet channel; the air inlet channel is arranged opposite to the air injection hole.

[0014] As an optional implementation manner, the air inlet channel is arranged in the middle of the cooling nozzle; and / or the air inlet channel is a herringbone structure.

[0015] As an optional implementation, the refrigeration component is a vortex tube refrigeration structure.

[0016] As an optional embodiment, the vortex tube refrigeration structure includes a compressed air nozzle, a vortex tube, a vortex chamber, an orifice plate and a control valve, the compressed air nozzle is connected to the vortex chamber, the vortex chamber is arranged in the middle of the vortex tube to divide the vortex tube into a cold air chamber and a hot air chamber, and the orifice plate is arranged between the vortex chamber and the cold air chamber.

[0017] As an optional implementation, a front-end temperature sensing component and a rear-end temperature sensing component are provided at both ends of the cooling nozzle.

[0018] An elbow welding production line comprises the elbow welding rapid cooling device as described above.

[0019] The beneficial effects of the present invention are as follows: the elbow welding rapid cooling device and elbow welding production line provided by the present invention include a refrigeration component, a supporting structure and a cooling nozzle, the cooling nozzle is connected to the refrigeration component, the refrigeration component is used to provide cold air to the cooling nozzle, and the cold air is blown through the cooling nozzle, thereby quickly cooling the elbow after welding, improving the cooling effect after elbow welding, increasing the hardness of the copper tube, and reducing abnormal quality of the elbow; the blowing component includes a supporting structure and a cooling nozzle, the cooling nozzle is arranged on the supporting structure, and the cooling nozzle is placed above the elbow welding conveying route through the supporting structure, so that the cold air is evenly sprayed onto the elbow from above the elbow through a number of air jet holes, and through continuous or intermittent spraying of cold air, rapid cooling can be achieved, the cooling effect is improved, and production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a three-dimensional diagram of the utility model elbow welding rapid cooling device;

[0022] Figure 2 This is a bottom view of the elbow welding rapid cooling device of the utility model;

[0023] Figure 3 This is a cross-sectional view of the utility model of the elbow welding rapid cooling device;

[0024] Figure 4 This is a partial structural cross-sectional view of the utility model elbow welding rapid cooling device;

[0025] Figure 5 It is a schematic diagram of the optional structure of the cooling nozzle of the utility model.

[0026] In the picture:

[0027] 100. Refrigeration components;

[0028] 101. Compressed air nozzle

[0029] 102. Vortex Tube

[0030] 103. Vortex Chamber

[0031] 104. Orifice Plate

[0032] 105. Control valve

[0033] 200, support structure;

[0034] 201. Support column

[0035] 202. Support rod

[0036] 203. First clamp

[0037] 204. Second clamp

[0038] 300, cooling nozzle;

[0039] 301, fumarole;

[0040] 302, air intake passage;

[0041] 400, front-end temperature sensing component;

[0042] 500. Rear-end temperature sensing component. DETAILED DESCRIPTION

[0043] Please refer to the following attached Figures 1-5 And the text content understands the content of the present invention and the difference between the present invention and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the present invention by means of the accompanying drawings and the enumeration of some optional embodiments of the present invention. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the present invention in this document, nor is it convenient for the implementation of each technical feature to emphasize that it is one of the multiple optional implementations. Therefore, those skilled in the art should know that: any technical means provided by the present invention can be replaced or any two or more technical means or technical features provided by the present invention can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the present invention. The scope of protection of the present invention should include any alternative technical solutions that can be thought of by those skilled in the art without paying creative work and new technical solutions obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0046] The utility model provides an elbow welding rapid cooling device and an elbow welding production line which can improve cooling effect and production efficiency.

[0047] The following combination Figures 1-5 The technical solution provided by the utility model is described in more detail.

[0048] The utility model provides a rapid cooling device for elbow welding, comprising a refrigeration component 100, a support structure 200 and a cooling nozzle 300. The cooling nozzle 300 is arranged on the support structure 200 and placed above the elbow welding conveying route. The refrigeration component 100 is connected to the cooling nozzle 300, and a plurality of air injection holes 301 are provided on the cooling nozzle 300.

[0049] The utility model provides a rapid cooling device for elbow welding, comprising a refrigeration component 100, a support structure 200 and a cooling nozzle 300. The cooling nozzle 300 is connected to the refrigeration component 100. The refrigeration component 100 is used to provide cold air to the cooling nozzle 300. Cold air is blown through the cooling nozzle 300, thereby quickly cooling the elbow after welding, improving the cooling effect after elbow welding, increasing the hardness of the copper tube, and reducing abnormal quality of the elbow; the blowing component comprises a support structure 200 and a cooling nozzle 300. The cooling nozzle 300 is arranged on the support structure 200. The cooling nozzle 300 is placed above the elbow welding conveying route through the support structure 200, so that cold air is evenly sprayed onto the elbow from above the elbow through a number of air jet holes 301. Through continuous or intermittent spraying of cold air, rapid cooling can be achieved, the cooling effect can be improved, and production efficiency can be improved.

[0050] It should be noted that the refrigeration component 100 is used to provide cold air to quickly cool the elbow after welding. After rapid cooling, the physical properties of the copper tube are changed, and the hardness of the copper tube is increased. This is because rapid cooling inhibits the diffusion of atoms, causing the crystal structure of the copper tube to change, resulting in a certain degree of work hardening, that is, the principle of heat treatment quenching of the copper tube, which allows the copper tube to better maintain its shape and increase its compressive resistance.

[0051] It can be understood that the cooling nozzle 300 is arranged on the support structure 200 and placed above the elbow welding conveying route, organically combining the elbow welding and elbow cooling processes, and starting cooling immediately after welding is completed to achieve seamless docking.

[0052] In some embodiments of the present invention, the support structure 200 includes a support column 201 and a support rod 202, the support rod 202 is arranged on the support column 201, the cooling nozzle 300 is arranged at the first end of the support rod 202, and the refrigeration assembly 100 is arranged at the second end of the support rod 202.

[0053] In some of the above-mentioned embodiments of the present invention, the support structure 200 includes a support column 201 and a support rod 202. The support rod 202 is arranged on the support column 201. The cooling nozzle 300 and the refrigeration component 100 are respectively arranged at both ends of the support rod 202. Cold air is transported to the cooling nozzle 300 through the refrigeration component 100. The refrigeration component 100 and the cooling nozzle 300 are respectively arranged at both ends of the support rod 202. The structure is simple and easy to adjust. The connecting pipe between the refrigeration component 100 and the cooling nozzle 300 is shorter, which is more conducive to ensuring the supply of cold air and completing the cooling process.

[0054] In some embodiments of the present invention, an adjustment assembly is provided between the support rod 202 and the support column 201. By providing the adjustment assembly between the support rod 202 and the support column 201, the adjustment assembly is used to adjust the distance between the cooling nozzle 300 and the elbows on the elbow welding conveyor line, thereby being able to select an appropriate height of cold air spray according to the needs of elbows of different thicknesses, ensuring that the quality of the elbows after cooling meets the requirements.

[0055] In some embodiments of the present invention, the adjustment assembly includes a first clamp block 203 and a second clamp block 204, the support rod 202 is fixedly connected to the first clamp block 203, the second clamp block 204 is provided with a through hole, the second clamp block 204 is slidably set on the support rod 202 through the through hole, and fasteners are connected to the first clamp block 203 and the second clamp block 204 to clamp the support column 201 through the first clamp block 203 and the second clamp block 204.

[0056] In some of the above-mentioned embodiments of the present invention, the adjustment assembly includes a first clamp 203 and a second clamp 204, and the second clamp 204 can slide along the support rod 202, so that the first clamp 203 and the second clamp 204 are clamped on the support column 201 by fasteners, so that the position of the support rod 202 on the support column 201 can be adjusted, so as to select the appropriate cold air spray height according to different elbows and improve the quality of the elbows.

[0057] In some embodiments of the present invention, the cooling nozzle 300 is a hollow rectangular parallelepiped structure, and the air injection hole 301 is provided on the bottom plate of the cooling nozzle 300 .

[0058] In some of the above-mentioned embodiments of the present invention, the cooling nozzle 300 is a hollow rectangular structure, which can be adapted to the movement trajectory of the nozzle on the conveyor line of the elbow. The cooling nozzle 300 can cool several nozzles on the conveyor line at the same time, thereby ensuring the cooling effect and cooling efficiency of the nozzle; it can better increase the cold air and elbow surface coverage, ensure uniform cooling, avoid local overheating or overcooling, and thus improve the overall quality of the heat exchanger; the jet hole 301 is arranged on the bottom plate of the cooling nozzle 300, and the cold air ejected from the jet hole 301 diffuses downward evenly, which can improve the cooling effect.

[0059] In some embodiments of the present invention, the air jet holes 301 are provided in at least four rows. The air jet holes 301 are provided in multiple rows, and at least four rows are provided, which can ensure that the cold air can cover the elbow surface, achieve efficient cooling, and improve the cooling effect.

[0060] It is understandable that the size, distribution or number of the air injection holes 301 can be optimized according to the cooling effect or flow rate, so as to ensure the cooling effect of the elbow.

[0061] In some embodiments of the present invention, the air injection hole 301 is a conical structure, and the small-diameter end of the conical structure faces the elbow on the elbow welding conveyor line.

[0062] In some of the above-mentioned embodiments of the present invention, the jet hole 301 is arranged into a conical structure, and the small aperture end of the conical structure faces the elbow, so that the ejected cold air can be properly accelerated to ensure that it has a certain ejection speed, so that the cold air can diffuse again when it reaches the vicinity of the elbow, thereby improving the cooling effect.

[0063] In some embodiments of the present invention, an air inlet channel 302 is provided on the cooling nozzle 300 , and the refrigeration assembly 100 is connected to the air inlet channel 302 ; the air inlet channel 302 is arranged opposite to the air injection hole 301 .

[0064] In some of the above-mentioned embodiments of the present invention, an air inlet channel 302 is provided on the cooling nozzle 300, the refrigeration component 100 is connected to the air inlet channel 302 through a pipeline, and the air inlet channel 302 is arranged opposite to the jet hole 301. The cold air output by the refrigeration component 100 is transported to the cooling nozzle 300 through the air inlet channel 302 and ejected from the jet hole 301, which can ensure the speed of the gas ejected from the jet hole 301 and ensure the cooling effect.

[0065] In some embodiments of the present invention, the air inlet channel 302 is disposed in the middle of the cooling nozzle 300 ; and / or the air inlet channel 302 is a herringbone structure.

[0066] In some of the above-mentioned embodiments of the present invention, the air inlet channel 302 is arranged in the middle of the cooling nozzle 300 to ensure that the cold air in the cooling nozzle 300 is diffused as evenly as possible and ejected from a number of jet holes 301; and it can ensure that the wind speed near the central area is faster, so that the elbow is blown through low wind speed, high wind speed, and low wind speed in sequence, thereby improving the cooling effect.

[0067] It should be noted that when the elbow is long, the air inlet channel 302 can be set to a herringbone structure so that the cold air at the front and rear ends of the elbow can be more evenly distributed to ensure the cooling effect.

[0068] In some embodiments of the present invention, the refrigeration assembly 100 is a vortex tube refrigeration structure.

[0069] In some of the above-mentioned embodiments of the present invention, by adopting a vortex tube refrigeration structure, compressed air is used to form a high-speed rotating vortex in the vortex tube 102, so that the airflow generates a vortex to separate the cold airflow, thereby achieving a cooling effect without the need for traditional refrigerants and complex refrigeration cycle systems.

[0070] Advantages include: simple structure, no moving parts, no need for lubrication and maintenance, reducing use costs and failure risks; easy to use, only needs to be connected to a compressed air source to work, and can quickly generate cold air, and satisfactory cooling parameters can be obtained by adjusting the valve at the hot air end; the working medium is common gases such as air, there is no need to worry about refrigerant leakage polluting the environment, and it is green and environmentally friendly; high safety, no electricity is required, and no electric sparks are generated, which has unique advantages for use in some flammable and explosive environments.

[0071] Furthermore, the vortex tube cooling structure is easy and quick to adjust, enabling precise control of the cooling rate. This can be adjusted based on the thickness of the copper tube material and the welding process. Because different copper tube specifications and wall thicknesses have varying tolerances to cooling rates, precise control of the cooling rate can prevent problems such as embrittlement and deformation caused by excessive cooling, while still achieving rapid cooling.

[0072] In some embodiments of the present invention, the refrigeration structure of the vortex tube 102 includes a compressed air nozzle 101, a vortex tube 102, a vortex chamber 103, an orifice plate 104 and a control valve 105. The compressed air nozzle 101 is connected to the vortex chamber 103. The vortex chamber 103 is arranged in the middle of the vortex tube 102 to divide the vortex tube 102 into a cold air chamber and a hot air chamber. The orifice plate 104 is arranged between the vortex chamber 103 and the cold air chamber.

[0073] In some embodiments of the present invention, a front-end temperature sensing component 400 and a rear-end temperature sensing component 500 are provided at both ends of the cooling nozzle 300 .

[0074] In some of the above-mentioned embodiments of the present invention, the front-end temperature sensing component 400 and the rear-end temperature sensing component 500 can detect the temperature change of the elbow in real time, and can adjust the cooling parameters in time according to the temperature change of the elbow to ensure the stability and effectiveness of the cooling process.

[0075] The front-end temperature sensing component 400 and the rear-end temperature sensing component 500 may adopt contact or non-contact temperature sensors, such as thermocouples, infrared thermometers, etc.

[0076] The present invention also includes a control system that receives temperature data from the temperature monitoring system and controls the operation of the refrigeration assembly 100 and cooling nozzle 300 according to a preset cooling program. The control system, which can be a microprocessor or programmable logic controller (PLC), provides automated control and parameter adjustment capabilities. For example, when the temperature exceeds a set upper limit, the control system increases the flow rate and pressure of the cooling gas to increase the cooling rate; when the temperature approaches the target value, the control system gradually reduces the cooling gas supply to prevent overcooling.

[0077] The utility model also provides an elbow welding production line, comprising the elbow welding rapid cooling device as described above.

[0078] Embodiment 1:

[0079] The utility model provides a rapid cooling device for elbow welding, including a support column 201, a support rod 202, a cooling nozzle 300 and a vortex tube refrigeration structure, wherein a plurality of air injection holes 301 are provided on the cooling nozzle 300, the support rod 202 is provided on the support column 201, the cooling nozzle 300 is provided at the first end of the support rod 202, the refrigeration assembly 100 is provided at the second end of the support rod 202, and the vortex tube 102 refrigeration structure is connected to the cooling nozzle 300 to transport cold air to the cooling nozzle 300, so that the cold air passes through the cooling nozzle 300 and is sprayed toward the elbow on the elbow welding conveyor line.

[0080] Specifically, the cooling nozzle 300 is a hollow rectangular parallelepiped structure, which extends along the conveying direction of the elbow welding conveyor line. The air injection holes 301 are provided on the bottom plate of the cooling nozzle 300 .

[0081] The refrigeration structure of the vortex tube 102 includes a compressed air nozzle 101, a vortex tube 102, a vortex chamber 103, an orifice plate 104 and a control valve 105. The compressed air nozzle 101 is connected to the vortex chamber 103. The vortex chamber 103 is arranged in the middle of the vortex tube 102 to divide the vortex tube 102 into a cold air chamber and a hot air chamber. The orifice plate 104 is arranged between the vortex chamber 103 and the cold air chamber.

[0082] Furthermore, an adjustment assembly is provided between the support rod 202 and the support column 201, and the adjustment assembly includes a first clamping block 203 and a second clamping block 204. The support rod 202 is fixedly connected to the first clamping block 203, and the second clamping block 204 is provided with a through hole. The second clamping block 204 is slidably provided on the support rod 202 through the through hole, and a fastener is connected to the first clamping block 203 and the second clamping block 204 to clamp the support column 201 through the first clamping block 203 and the second clamping block 204.

[0083] Furthermore, an air inlet channel 302 is provided on the cooling nozzle 300 , and the refrigeration assembly 100 is connected to the air inlet channel 302 ; the air inlet channel 302 is arranged opposite to the air injection hole 301 .

[0084] Optionally, the air inlet channel 302 is a herringbone structure. A front temperature sensing component 400 and a rear temperature sensing component 500 are provided at the front and rear ends of the cooling nozzle 300. The vortex tube cooling structure, the front temperature sensing component 400 and the rear temperature sensing component 500 are all connected to a control system.

[0085] The utility model also provides an elbow welding production line, comprising the elbow welding rapid cooling device as described above.

[0086] The workflow of this utility model is:

[0087] 1. After the heat exchanger elbow is welded, the cooling nozzle is placed above the elbow conveyor line to ensure that the cold air sprayed by the cooling nozzle can cover the elbow surface;

[0088] 2. Turn on the compressed air supply, and the vortex tube refrigeration structure will work, spraying the cooling gas onto the elbow surface at a certain pressure and flow rate. The cooling gas can be sprayed continuously or intermittently, and the specific method is determined according to the actual situation;

[0089] 3. The front-end temperature sensing component 400 and the rear-end temperature sensing component 500 monitor the temperature changes of the elbow in real time and transmit the data to the control system;

[0090] 4. The control system adjusts the cooling parameters according to the temperature data, such as the flow rate, pressure, and spraying time of the cooling gas, to ensure that the temperature of the elbow drops at an appropriate rate. When the temperature of the elbow drops to the set target temperature, the cooling gas supply is stopped and the cooling process is completed.

[0091] Throughout this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0092] Of course, the invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rapid cooling device for elbow welding, characterized in that: It includes a refrigeration component, a support structure and a cooling nozzle. The cooling nozzle is arranged on the support structure and placed above the elbow welding conveying route. The refrigeration component is connected to the cooling nozzle, and a plurality of air injection holes are arranged on the cooling nozzle.

2. The elbow welding rapid cooling device according to claim 1, characterized in that: The support structure includes a support column and a support rod, the support rod is arranged on the support column, the cooling nozzle is arranged at a first end of the support rod, and the refrigeration component is arranged at a second end of the support rod.

3. The elbow welding rapid cooling device according to claim 2, characterized in that: An adjustment component is provided between the support rod and the support column.

4. The elbow welding rapid cooling device according to claim 3, characterized in that: The adjustment assembly includes a first clamping block and a second clamping block, the support rod is fixedly connected to the first clamping block, the second clamping block is provided with a through hole, the second clamping block is slidably set on the support rod through the through hole, and a fastener is connected to the first clamping block and the second clamping block to clamp the support column through the first clamping block and the second clamping block.

5. The elbow welding rapid cooling device according to claim 2, characterized in that: The cooling nozzle is a hollow rectangular parallelepiped structure, and the air injection holes are arranged on the bottom plate of the cooling nozzle; And / or, the air jet holes are provided in at least four rows; And / or, the air jet hole is a conical structure, and the small-diameter end of the conical structure faces the elbow on the elbow welding conveyor line.

6. The elbow welding rapid cooling device according to any one of claims 1 to 5, characterized in that: The cooling nozzle is provided with an air inlet channel, and the refrigeration component is connected to the air inlet channel; the air inlet channel is arranged opposite to the air injection hole.

7. The elbow welding rapid cooling device according to claim 6, characterized in that: The air inlet channel is arranged in the middle of the cooling nozzle; and / or the air inlet channel is a herringbone structure.

8. The elbow welding rapid cooling device according to any one of claims 1 to 5, characterized in that: The refrigeration component is a vortex tube refrigeration structure.

9. The elbow welding rapid cooling device according to claim 8, characterized in that: The vortex tube refrigeration structure includes a compressed air nozzle, a vortex tube, a vortex chamber, an orifice plate and a control valve. The compressed air nozzle is connected to the vortex chamber. The vortex chamber is arranged in the middle of the vortex tube to divide the vortex tube into a cold air chamber and a hot air chamber. The orifice plate is arranged between the vortex chamber and the cold air chamber.

10. The elbow welding rapid cooling device according to any one of claims 1 to 5, characterized in that: A front-end temperature sensing component and a rear-end temperature sensing component are provided at both ends of the cooling nozzle.

11. An elbow welding production line, characterized in that: It comprises the elbow welding rapid cooling device as described in any one of claims 1-10.

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