A tubing weld air cooling assembly and method

Abstract

The application discloses a tubing welding air cooling assembly and a cooling method. The tubing welding air cooling assembly comprises a cooling assembly and a supporting assembly. The supporting assembly is matched with the outer wall of the tubing to support the end of the tubing. The cooling assembly comprises a cooling box and connecting pipes. The connecting pipes are at least two. The connecting pipes are connected with the end of the tubing and the cooling box respectively, so that the tubing pipeline and the cavity in the cooling box are connected into a circulating passage. Through the design, the cooling assembly is connected with the tubing through the connecting pipes, so that the tubing pipeline, the connecting pipe pipeline and the cooling box of the cooling assembly form a circulating passage. The gas in the passage circulates to take away the heat generated during the welding of the tubing and the flange. The gas taking away the heat is cooled in the cooling box and then goes to cool the tubing again. The gas with low temperature makes the tubing cool down quickly. The gas is heated and exchanges heat with the cooling box to keep the gas at a low temperature, so that the cooling efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of oil pipe processing, and particularly relates to an air cooling assembly and cooling method for oil pipe welding. Background Technology

[0002] With social development, the number of fuel-powered machinery and vehicles is increasing, and the demand for oil pipes is also rising. Oil pipe manufacturers need to process oil pipes more efficiently. During the welding of flanges and after welding, the welded parts need to be cooled to ensure the quality of the weld. The current common practice is to directly blow air to cool the welded parts. However, air cooling at room temperature is inefficient, and the long cooling time for an oil pipe makes it difficult to improve the processing efficiency of oil pipes. Therefore, there is a need to provide an air cooling component and cooling method for oil pipe welding. Summary of the Invention

[0003] The purpose of this invention is to provide an air cooling assembly and cooling method for oil pipe welding, so as to solve the technical problems of low air cooling efficiency at room temperature and excessive cooling time for an oil pipe, which makes it difficult to improve the processing efficiency of oil pipe.

[0004] To achieve the above objectives, the specific technical solution of the present invention is as follows: An air cooling assembly and method for welding oil pipes are disclosed. The assembly clamps and cools the oil pipe, comprising a cooling assembly and a support assembly. The support assembly mates with the outer wall of the oil pipe to support it, suspending the end of the oil pipe. The cooling assembly includes a cooling box and connecting pipes. The cooling box reduces the temperature of the gas flowing through it. At least two connecting pipes are provided, each connecting the end of the oil pipe to the cooling box, forming a circulation path between the oil pipe and the cavity within the cooling box. With this design, after the oil pipe is supported by the support assembly, the cooling assembly, connected to the oil pipe via the connecting pipes, creates a circulation path between the oil pipe, the connecting pipes, and the cooling box. The gas continuously circulates within this path, carrying away the heat generated during welding of the oil pipe to the flange. The heat-carrying gas, after passing through the cooling box, cools down and then cools the oil pipe again. The lower gas temperature results in rapid cooling of the oil pipe, and the gas, after heating up, can exchange heat with the cooling box to maintain a consistently low temperature, greatly increasing cooling efficiency.

[0005] Furthermore, the cooling chamber includes a dust filtration chamber, an air inlet chamber, and a drying chamber, which are arranged sequentially according to the gas flow direction. A filter plate is installed between the dust filtration chamber and the air inlet chamber to isolate dust. A cooling fan is installed between the air inlet chamber and the drying chamber. The cooling fan includes a fan and an evaporator. The fan is located on the side closer to the air inlet chamber, and the evaporator is located on the side closer to the drying chamber. The airflow direction of the cooling fan is coordinated with the drying plate installed in the drying chamber. Due to the requirements for welding quality, the welded part must be kept dry during welding. If the gas in the cooling oil pipe contains moisture, water droplets will condense at the welded part. Therefore, the drying chamber is used to filter out the moisture carried by the gas.

[0006] Furthermore, the evaporator is equipped with an evaporation tube that extends out of the cooling box and connects to an air compressor outside the cooling box. Coolant flows through the evaporation tube, and the air compressor pressurizes the coolant delivered from the evaporation tube and sends it to the condenser tube of the external fan. With this design, the coolant, typically a liquid with a very low boiling point, absorbs heat during boiling and evaporation. Therefore, the coolant in the evaporation tube continuously evaporates and absorbs heat, lowering the temperature of the evaporation tube and the air flowing through it. After the coolant in the evaporation tube boils and absorbs heat, its temperature rises, and it enters the air compressor where it is compressed. The compressed coolant then enters the condenser tube, where its boiling point increases due to the high pressure, causing it to liquefy and release heat within the condenser tube, thus creating a cycle.

[0007] Furthermore, the connecting pipe connects one end of the oil pipe to the dust filter chamber, and the other connecting pipe connects the other end of the oil pipe to the drying chamber. With this design, the gas flow within the cooling box is from the dust filter chamber to the air inlet chamber and then to the drying chamber. Dust and moisture in the gas are removed before entering the oil pipe, ensuring the welding quality of the oil pipe.

[0008] Furthermore, the dust filtration chamber is also equipped with vents and a dust collection box. The vents are arranged in an array on the side wall of the dust filtration chamber opposite to the filter plate, and the dust collection box is detachably inserted into the bottom of the dust filtration chamber. With this design, the gas entering the dust filtration chamber is the gas after cooling the oil pipe, and its temperature is higher than room temperature. At this time, the vents on the dust filtration chamber can allow the gas outside the cooling box to pass in and neutralize the temperature. The external gas usually contains dust, which is filtered by the filter plate between the dust filtration chamber and the air inlet chamber, and then falls into the dust collection box due to gravity. The detachable dust collection box is easy to clean.

[0009] Furthermore, a drainage trough is provided below the drying chamber, which is matched with the position where the water droplets condensed on the drying plate fall. A leak is provided through the bottom of the drainage trough to drain the accumulated liquid.

[0010] Furthermore, the end of the connecting pipe that mates with the oil pipe is equipped with a chuck and a tapered guide head. The chuck has a pre-drilled hole in its center, and a bearing is nested within this hole. The oil pipe passes through this hole, and its outer wall mates with the bearing. The portion of the oil pipe passing through the hole is fixedly connected to the tapered guide head, the bottom of which abuts against the chuck. Before being placed on the support assembly, the oil pipe and flange are spot-welded. The chuck grips the flange, and the tapered guide head of the connecting pipe is inserted into the oil pipe. Since the flange and the tapered guide head abut against each other, when the chuck grips the flange, the tapered guide head is tightly inserted into the oil pipe. The bearing allows the oil pipe and flange to rotate during welding, facilitating the welding process.

[0011] Furthermore, the support assembly includes a base and a support head. The support head is fixedly mounted on the base and includes a U-shaped frame and a roller assembly. The U-shaped frame legs are fixedly connected to the base with an upward orientation, and the roller assembly is mounted on the U-shaped frame legs. The roller assembly cooperates with the oil pipe to roll. With this design, when the oil pipe needs to rotate while supported by the support head, the roller assembly makes the rotation of the oil pipe more convenient.

[0012] Furthermore, a drying blowpipe is movably mounted on the support head, and the air outlet direction of the drying blowpipe is matched with the welded part of the oil pipe. With this design, after the oil pipe is cooled, the oil pipe temperature is low, and condensation will occur at the welded part between the outer wall of the oil pipe and the flange, affecting the weld quality. The drying blowpipe can prevent the formation of condensation by blowing away the welded part of the oil pipe.

[0013] A method for cooling oil pipe welding includes the following steps: Step 1, Spot welding: Spot weld the flange and oil pipe to fix their positions; Step 2, Installation: Place the spot-welded oil pipe onto the support assembly; Step 3, Connection: Align the tapered guide head with the axial direction of the oil pipe, and use the chuck to connect the connecting pipe to the oil pipe; Step 4: Welding: Weld the flange to the fixed position of the oil pipe; Step 5: Cooling: Turn on the cooling system to cool the oil pipes; Step 6: Disassembly: Remove the welded oil pipe.

[0014] This process speeds up the welding efficiency of the oil pipes.

[0015] The beneficial effects of this invention are as follows: After the oil pipe is supported by the support assembly, the cooling assembly is connected to the oil pipe through the connecting pipe, so that the oil pipe, the connecting pipe and the cooling box of the cooling assembly form a circulation path. The gas in the path continuously circulates and carries away the heat generated when the oil pipe is welded to the flange. The gas that carries away the heat is cooled down after passing through the cooling box and then cools the oil pipe again. The lower temperature of the gas makes the oil pipe cool down quickly, and the gas can exchange heat with the cooling box after heating up to keep the gas at a low temperature, which greatly increases the cooling efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from the rear view. Figure 3 This is a schematic diagram of the cooling box without side plates and the air compressor structure of the present invention; Figure 4 This is a schematic diagram of the cooling box structure of the present invention; Figure 5 This is a schematic diagram of the mating structure of the chuck and some connecting pipes of the present invention; Figure 6 This is a schematic diagram of the cooling fan structure of the present invention; Figure 7 This is a schematic diagram of the support component structure of the present invention; Figure 8 for Figure 7 Enlarged schematic diagram of section A in the middle; Figure 9 This is a schematic diagram of the chuck structure of the present invention; The markings in the diagram are as follows: 1. Oil pipe; 2. Cooling box; 3. Connecting pipe; 4. Dust filter chamber; 5. Air inlet chamber; 6. Drying chamber; 7. Filter plate; 8. Cooling fan; 9. Fan; 10. Evaporator; 11. Evaporator tube; 12. Air compressor; 13. Drying plate; 14. Vent hole; 15. Dust collection box; 16. Drainage trough; 17. Leak; 18. Chuck; 19. Conical guide head; 20. Opening; 21. Bearing; 22. Base; 23. Support head; 24. U-shaped frame; 25. Roller assembly; 26. Support leg; 27. Drying blowpipe; 28. Flange; 29. ​​External fan; 30. Condenser tube. Detailed Implementation

[0017] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0018] Before the support components were placed, the oil pipes and flanges underwent spot welding to initially fix their positions.

[0019] like Figures 1 to 9 As shown: In a first aspect, embodiments of this application provide an air cooling assembly for oil pipe welding.

[0020] Example 1

[0021] An air cooling assembly and cooling method for welding oil pipes are disclosed. The assembly is used to clamp and cool the oil pipe 1. It includes a cooling assembly and a support assembly. The support assembly cooperates with the outer wall of the oil pipe 1 to support the end of the oil pipe 1 and suspend it in the air. The cooling assembly includes a cooling box 2 and connecting pipes 3. At least two connecting pipes 3 are provided. The connecting pipes 3 connect the ends of the oil pipe 1 to the cooling box 2 respectively, so that the oil pipe 1 and the cavity in the cooling box 2 form a circulation passage.

[0022] The above embodiments are implemented as follows: Oil pipe 1 and flange 28, after being spot-welded, are supported by the support assembly. Two connecting pipes 3 connect the two ends of oil pipe 1 to the front and rear ends of cooling box 2 respectively. At this time, the pipe of oil pipe 1, the pipe of connecting pipe 3 and the internal cavity of cooling box 2 are connected to form a passage. The temperature inside cooling box 2 is low, and the flow direction of gas is: cooling box 2 → connecting pipe 3 → oil pipe 1 → connecting pipe 3 → cooling box 2. This is one cycle.

[0023] The gas flowing through the cooling box 2 will have its temperature reduced by the cooling box 2. The low-temperature gas enters the oil pipe 1 through the connecting pipe 3 to cool the welding position between the oil pipe 1 and the flange 28, thereby improving the welding quality.

[0024] Example 2

[0025] The cooling chamber 2 includes a dust filter chamber 4, an air inlet chamber 5, and a drying chamber 6. The dust filter chamber 4, the air inlet chamber 5, and the drying chamber 6 are arranged sequentially according to the gas flow direction. A filter plate 7 is provided between the dust filter chamber 4 and the air inlet chamber 5 to isolate dust. A cooling fan 8 is provided between the air inlet chamber 5 and the drying chamber 6. The cooling fan 8 includes a fan 9 and an evaporator 10. The fan 9 is located on the side closer to the air inlet chamber 5, and the evaporator 10 is located on the side closer to the drying chamber 6. The air blowing direction of the cooling fan 8 is matched with the drying plate 13 provided in the drying chamber 6.

[0026] The above embodiment is implemented as follows: the dust filter chamber 4 has the function of filtering dust, the air inlet chamber 5 is responsible for sending the filtered gas into the cooling fan 8 for cooling, and the drying chamber 6 dries the gas sent by the cooling fan 8. After the gas passes through the dust filter chamber 4, the air inlet chamber and the drying chamber 6, the dust and water vapor in the gas are removed and the temperature is reduced.

[0027] Example 3

[0028] The evaporator 10 is equipped with an evaporation tube 11, which extends out of the cooling box 2 and is connected to an air compressor 12 outside the cooling box 2. Coolant flows inside the evaporation tube, and the air compressor pressurizes the coolant delivered from the evaporation tube and delivers it to the condenser tube of the external fan.

[0029] The above embodiments are implemented as follows: The coolant is usually Freon. Freon has a very low boiling point, and liquids absorb heat when they boil and evaporate. Therefore, the coolant in the evaporator tube 11 will continuously evaporate and absorb heat to reduce the temperature of the evaporator tube 11 and the air flowing through it. After the temperature rises due to boiling and heat absorption, the coolant in the evaporator tube 11 enters the air compressor 12 and is compressed. The compressed coolant then enters the condenser tube 30. The boiling point of the coolant increases due to the high pressure, causing the coolant to liquefy and release heat in the condenser tube 30. The external fan 29 blows away the heat from the condenser tube 30, and the cycle continues.

[0030] Example 4

[0031] The connecting pipe 3 connects one end of the oil pipe 1 to the dust filter chamber 4, and the other connecting pipe 3 connects the other end of the oil pipe 1 to the drying chamber 6.

[0032] The dust filter chamber 4 is also provided with vent holes 14 and dust collection box 15. The vent holes 14 are arranged in an array on the side wall of the dust filter chamber opposite to the filter plate 7. The dust collection box 15 is detachably inserted into the bottom of the dust filter chamber.

[0033] A drainage trough 16 is also provided below the drying chamber 6. The drainage trough 16 is matched with the position where the water droplets condensed on the drying plate 13 fall. A leak 17 is provided through the bottom of the drainage trough 16 to drain the accumulated liquid.

[0034] The above embodiments are implemented as follows: The gas entering the dust filter chamber is the gas that has been cooled by the oil pipe 1 and is at a temperature higher than room temperature. At this time, the vent 14 on the dust filter chamber 4 can allow the gas outside the cooling box 2 to pass in and neutralize the temperature. The external gas usually contains dust, which will be filtered by the filter plate 7 between the dust filter chamber 4 and the air inlet chamber 5 and then fall into the dust collection box 15 due to gravity. The detachable dust collection box 15 is easy to clean, and the water droplets accumulated on the drying plate 13 will fall with gravity until they fall into the drain trough 16 below and are discharged.

[0035] Example 5

[0036] The end of the connecting pipe 3 that is connected to the oil pipe 1 is provided with a chuck 18 and a tapered guide head 19. The chuck 18 has a pre-drilled hole 20 in the center. The hole 20 is nested with a bearing 21. The oil pipe 1 passes through the hole 20 and its outer wall is connected to the bearing 21. The portion of the oil pipe 1 that passes through the hole 20 is fixedly connected to the tapered guide head 19. The bottom of the tapered guide head 19 abuts against the chuck 18.

[0037] The above embodiments are implemented as follows: The chuck 18 clamps the flange 28, and the tapered guide head 19 of the connecting pipe 3 is inserted into the oil pipe 1. The flange 28 and the tapered guide head 19 are also in contact. When the chuck 18 clamps the flange 28, the tapered guide head 19 is tightly inserted into the oil pipe 1. The bearing 21 allows the oil pipe 1 and the flange 28 to rotate during the welding process, which facilitates welding.

[0038] Example 6

[0039] The support assembly includes a base 22 and a support head 23. The support head 23 is fixedly installed on the base 22. The support head 23 includes a U-shaped frame 24 and a roller assembly 25. The legs 26 of the U-shaped frame 24 are fixedly connected to the base 22 with their upward facing direction. The roller assembly 25 is installed on the legs 26 of the U-shaped frame 24 and rotates in cooperation with the oil pipe 1.

[0040] Implementation of the above embodiments: The two legs 26 of the U-shaped frame 24 face upwards, and the roller assembly 25 on the legs 26 supports the outer wall of the oil pipe 1. When the oil pipe 1 needs to rotate, the rotation of the roller assembly 25 can be controlled to achieve the rotation of the oil pipe 1.

[0041] Example 7

[0042] A drying blowpipe 27 is movably mounted on the support head 23, and the air outlet direction of the drying blowpipe 27 is matched with the welding part of the oil pipe 1.

[0043] The above embodiments are implemented as follows: After the oil pipe 1 is cooled, the oil pipe 1 will be at a low temperature. Condensation will occur at the weld between the outer wall of the oil pipe 1 and the flange 28, which will affect the welding quality. However, the drying blowpipe 27 can blow away the welded part of the oil pipe 1 to avoid the generation of condensation.

[0044] Secondly, embodiments of this application also provide a method for cooling oil pipe welding: Example 8

[0045] A method for cooling oil pipe welding, characterized by comprising the following steps: Step 1, Spot welding: Spot weld flange 28 to oil pipe 1 to fix their position; Step 2, Installation: Place the spot-welded oil pipe 1 onto the support assembly; Step 3, Connection: Align the tapered guide head 19 with the axial direction of the oil pipe 1, and use the chuck 18 to connect the connecting pipe 3 to the oil pipe 1. Step 4: Welding: Weld the flange 28 to the fixed position of the oil pipe 1; Step 5, Cooling: Turn on the cooling system to cool oil pipe 1; Step 6: Disassembly: Remove the welded oil pipe 1.

[0046] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An air cooling assembly for welding oil pipes, used to clamp oil pipes (1) and cool the oil pipes (1), characterized in that, The system includes a cooling assembly and a support assembly. The support assembly is fitted with the outer wall of the oil pipe (1) to support the end of the oil pipe (1) so that it is suspended. The cooling assembly includes a cooling box (2) and a connecting pipe (3). The cooling box (2) is used to reduce the temperature of the gas flowing through the cooling box (2). At least two connecting pipes (3) are provided. The connecting pipes (3) connect the ends of the oil pipe (1) to the cooling box (2) respectively, so that the oil pipe (1) and the cavity inside the cooling box (2) form a circulation path. The cooling box (2) includes a dust filter chamber (4), an air inlet chamber (5), and a drying chamber (6). The dust filter chamber (4), the air inlet chamber (5), and the drying chamber (6) are arranged in sequence according to the gas flow direction. A filter plate (7) is provided between the dust filter chamber (4) and the air inlet chamber (5) to isolate dust. A cooling fan (8) is provided between the air inlet chamber (5) and the drying chamber (6). The cooling fan (8) includes a fan (9) and an evaporator (10). The fan (9) is located on the side close to the air inlet chamber (5), and the evaporator (10) is located on the side close to the drying chamber (6). The blowing direction of the cooling fan (8) is matched with the drying plate (13) provided in the drying chamber (6). The evaporator (10) is equipped with an evaporation tube (11), which extends out of the cooling box (2) and is connected to the air compressor (12) outside the cooling box (2). Coolant flows inside the evaporation tube (11), and the air compressor (12) pressurizes the coolant delivered from the evaporation tube (11) and delivers it to the condenser tube (30) of the external fan (29). The connecting pipe (3) connects one end of the oil pipe (1) to the dust filter chamber (4), and the other connecting pipe (3) connects the other end of the oil pipe (1) to the drying chamber (6); The dust filter chamber (4) is also provided with vent holes (14) and dust collection box (15). The vent holes (14) are arranged in an array on the side wall of the dust filter chamber (4) opposite to the filter plate (7). The dust collection box (15) can be detachably inserted into the bottom of the dust filter chamber (4).

2. The air cooling assembly for oil pipe welding according to claim 1, characterized in that, A drainage trough (16) is also provided below the drying chamber (6). The drainage trough (16) is matched with the position where the water droplets condensed on the drying plate (13) fall. A leak (17) is provided through the bottom of the drainage trough (16) to drain the accumulated liquid.

3. The air cooling assembly for oil pipe welding according to claim 1, characterized in that, The end of the connecting pipe (3) that is connected to the oil pipe (1) is provided with a chuck (18) and a tapered guide head (19). The chuck (18) has a pre-drilled hole (20) in the center. The hole (20) is nested with a bearing (21). The oil pipe (1) passes through the hole (20) and the outer wall of the oil pipe (1) is connected to the bearing (21). The part of the oil pipe (1) that passes through the hole (20) is fixedly connected to the tapered guide head (19). The bottom of the tapered guide head (19) abuts against the chuck (18).

4. The air cooling assembly for oil pipe welding according to claim 3, characterized in that, The support assembly includes a base (22) and a support head (23). The support head (23) is fixedly installed on the base (22). The support head (23) includes a U-shaped frame (24) and a roller assembly (25). The legs (26) of the U-shaped frame (24) are fixedly connected to the base (22) with their legs facing upwards. The roller assembly (25) is installed on the legs (26) of the U-shaped frame (24). The roller assembly (25) rotates in cooperation with the oil pipe (1).

5. The air cooling assembly for oil pipe welding according to claim 4, characterized in that, A drying blowpipe (27) is movably installed on the support head (23), and the air outlet direction of the drying blowpipe (27) matches the welding part of the oil pipe (1).

6. A method for cooling oil pipe welding, characterized in that, The oil pipe welding air cooling assembly according to claim 4 or 5 includes the following steps: Step 1, Spot welding: Spot weld the flange (28) to the oil pipe (1) to fix their positions; Step 2, Installation: Place the spot-welded oil pipe (1) onto the support assembly; Step 3, Connecting: Align the tapered guide head (19) with the axial direction of the oil pipe (1), and use the chuck (18) to connect the connecting pipe (3) with the oil pipe (1); Step 4, Welding: Weld the flange (28) to the fixed position of the oil pipe (1); Step 5, Cooling: Turn on the cooling assembly to cool the oil pipe (1); Step 6: Disassembly: Remove the welded oil pipe (1).

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