A heat exchanger structure and pipe threading mechanism

Abstract

The present invention discloses a heat exchanger structure and a pipe threading mechanism, which relate to the field of refrigeration equipment, including an outer tube body, wherein an inner flow tube is penetrated in the outer tube body, a heat exchange channel is formed between the inner wall of the outer tube body and the outer wall of the inner flow tube, and multi-way structural parts are respectively installed at both ends of the outer tube body, the multi-way structural parts include a first pipe part which is conductive with the conveying inner flow tube, and the multi-way structural parts also include a second pipe part which is conductive with the conveying heat exchange channel, and the liquid in the heat exchange channel can exchange heat with the liquid in the inner flow tube. The present invention timely exchanges heat with the refrigerant in the inner flow tube through the flow of liquid in the heat exchange channel, thereby having a heat conduction and cooling effect on the inner flow tube, reducing the influence of air fluidity on the heat dissipation effect, and further having an effective cooling effect on the refrigerant in the inner flow tube.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration equipment, in particular to a heat exchanger structure and a pipe threading mechanism. Background Art

[0002] Heat exchangers are commonly used in refrigeration equipment. Their main function in the entire refrigeration cycle is to exchange heat with the refrigerant.

[0003] Existing Chinese patent publication number: CN106482538B, the name of the patent is "heat exchanger", the patent includes "a plurality of heat exchange tubes arranged along a first direction; and a plurality of fins arranged along a second direction, each of the plurality of fins includes: a fin body, a fin slot formed in the fin body for arranging the heat exchange tube, the fin slot includes a first fin slot and a second fin slot, wherein in the plane of the fin body, the first fin slot opens toward a first side, and the second fin slot opens toward a second side opposite to the first side, wherein the plurality of fins are located at different positions or staggered with each other in the second direction".

[0004] In the existing heat exchanger structure, a plurality of heat dissipation fins are arranged on the tube body. Although the above solution has a certain heat dissipation effect, it also has certain requirements on the air flowability of the environment where the heat exchanger is located, and has certain limitations in practical application. Summary of the invention

[0005] The object of the present invention is to provide a heat exchanger structure and a pipe threading mechanism to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A heat exchanger structure includes an outer tube body, an inner flow tube passes through the outer tube body, a heat exchange channel is formed between the inner wall of the outer tube body and the outer wall of the inner flow tube, and multi-way structural components are respectively installed at both ends of the outer tube body, the multi-way structural component includes a first tube component that is connected to the conveying inner flow tube, and the multi-way structural component also includes a second tube component that is connected to the conveying heat exchange channel, and the liquid in the heat exchange channel can exchange heat with the liquid in the inner flow tube.

[0008] Preferably, a plurality of evenly distributed rods are provided on the circumferential surface of the outer wall of the inner flow tube.

[0009] Preferably, the heat exchanger structure prepared as described above includes a machine platform, on which a pipe fixing mechanism and a pipe inserting mechanism are provided, and the pipe inserting mechanism can insert the inner flow pipe into the outer pipe body on the pipe fixing mechanism.

[0010] Preferably, the tube fixing mechanism has a loose state and a clamping state, and the tube fixing mechanism can fix the outer tube body in the clamping state.

[0011] Preferably, the pipe fixing mechanism comprises a plurality of first supporting blocks, each of the first supporting blocks is provided with a first slot, and each of the first slots is fixed with an anti-slip gasket.

[0012] Preferably, the tube insertion mechanism includes a supporting component and a pushing component, and the pushing component includes a rotating roller capable of contacting the inner flow tube, and the rotating roller pushes the inner flow tube into the outer tube body on the tube fixing mechanism through friction when rotating.

[0013] Preferably, the supporting assembly includes a second supporting block, and the second supporting block is provided with a second card slot and a slot.

[0014] Preferably, both ends of the rotating roller are fixed to the machine platform via roller brackets.

[0015] Preferably, a transmission belt mechanism is provided on the machine platform, the pipe fixing mechanism and the second support block are both located on the carrier belt of the transmission belt mechanism, and the line between the first card slot and the second card slot is perpendicular to the moving direction line of the carrier belt.

[0016] Preferably, a supporting ball is rotatably mounted in the slot body of the second slot.

[0017] In the above technical scheme, the present invention provides a heat exchanger structure, in which an outer tube body is sleeved on the outside of the inner flow tube, thereby forming a heat exchange channel on the outer circumference of the inner flow tube. The liquid in the heat exchange channel flows to timely exchange heat with the refrigerant in the inner flow tube, thereby having a heat conduction and cooling effect on the inner flow tube, reducing the influence of air flowability on the heat dissipation effect, and then effectively cooling the refrigerant in the inner flow tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of a heat exchanger structure of the present invention;

[0020] Figure 2 A schematic diagram of a pipe threading mechanism of a heat exchanger structure of the present invention;

[0021] Figure 3 A schematic top view of another embodiment of a pipe threading mechanism of a heat exchanger structure of the present invention;

[0022] Figure 4A schematic diagram of a roller bracket of a tube threading mechanism of a heat exchanger structure of the present invention;

[0023] Figure 5 A side schematic diagram of a first bracket block of a pipe threading mechanism of a heat exchanger structure of the present invention;

[0024] Figure 6 A cross-sectional schematic diagram of a first bracket block of another embodiment of a pipe threading mechanism of a heat exchanger structure of the present invention;

[0025] Figure 7 A schematic diagram of a tube fixing mechanism of a tube threading mechanism of a heat exchanger structure of the present invention in a clamping state:

[0026] Figure 8 A partial cross-sectional schematic diagram of an axial rod of a pipe threading mechanism of a heat exchanger structure of the present invention:

[0027] Fig. 9 A schematic diagram of a track bar of a pipe threading mechanism of a heat exchanger structure of the present invention:

[0028] Fig.10 The present invention is a cross-sectional schematic diagram of a second support block of a pipe threading mechanism of a heat exchanger structure.

[0029] Description of reference numerals:

[0030] 1. Outer tube; 2. Inner flow tube; 2.1. Sealing ring; 3. Heat exchange flow channel; 4. Multi-pass structural member; 4.1. First tube; 4.2. Second tube; 5. Rod; 6. Machine; 6.1. Transmission belt mechanism; 6.2. Carrying belt; 6.3. Mounting port; 6.4. Belt roller; 6.5. Transmission shaft; 7. Fixing tube mechanism; 7.1. First bracket; 7.2. First card slot; 7.21. Insertion cavity; 7.22. Insert plate; 7.23. Spring; 7.24. Rubber strip; 7.25. Oblique opening; 7.26. Wedge-shaped protrusion; 7.27. Card limit strip; 7.28. Telescopic rod; 7.29. Long strip opening; 8. Insert Tube mechanism; 8.1, supporting assembly; 8.11, second supporting block; 8.12, second card slot; 8.13, slot; 8.14, supporting ball; 8.2, pushing assembly; 8.21, rotating roller; 8.211, roller shaft rod; 8.212, non-slip rubber soft sleeve; 8.213, annular groove; 8.22, roller bracket; 8.221, base frame; 8.222, support plate; 8.223, installation port; 9, shaft rod; 10, first gear; 11, second gear; 12, track bar; 12.1, raised section; 12.2, avoidance section; 13, toothed belt; 14, cylindrical protrusion; 15, magnet block; 16, bevel gear. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1-10 A heat exchanger structure provided by an embodiment of the present invention comprises an outer tube body 1, an inner flow tube 2 is passed through the outer tube body 1, a heat exchange channel 3 is formed between the inner wall of the outer tube body 1 and the outer wall of the inner flow tube 2, a multi-pass structural member 4 is respectively installed at both ends of the outer tube body 1, the multi-pass structural member 4 comprises a first pipe member 4.1 which is in communication with the inner flow tube 2, and the multi-pass structural member 4 also comprises a second pipe member 4.2 which is in communication with the heat exchange channel 3, and the liquid in the heat exchange channel 3 can exchange heat with the liquid in the inner flow tube 2;

[0033] Specifically, the outer tube body 1 and the inner flow tube 2 are both made of metal. A sealing ring 2.1 is sealed on the tube body of the inner flow tube 2. The sealing ring 2.1 is sealed and fixed to the tube mouth of the outer tube body 1. The sealing ring 2.1 can seal the end of the heat exchange channel 3. The second pipe 4.2 is fixedly penetrated through the sealing ring 2.1 and is connected to the heat exchange channel 3. The inner flow tube 2 is transported with refrigerant, and the heat exchange channel 3 is a circulating coolant. During use, the refrigerant in the heat exchange channel 3 area exchanges heat with the coolant flowing in the heat exchange channel 3, thereby achieving a heat conduction and cooling effect on the refrigerant in the inner flow tube, reducing the influence of air flow on the heat dissipation effect.

[0034] Among them, when the number of inner flow tubes 2 in the outer tube body 1 is multiple, for example, the number of inner flow tubes 2 in the outer tube body 1 is four, at this time, the heat exchange contact area between the refrigerant and the cooling liquid in the heat exchange channel 3 is increased, thereby improving the heat exchange efficiency.

[0035] In another embodiment provided by the present invention, a plurality of evenly distributed rods 5 are provided on the circumferential surface of the outer wall of the inner flow tube 2, and the axial extension lines of the rods 5 are perpendicular to the axial line of the inner flow tube 2. The rods 5 form a convex structure on the outer wall of the inner flow tube 2, thereby forming a supporting gap between the outer wall of the inner flow tube 2 and the inner wall of the outer tube body 1, so that the coolant can flow evenly in the heat exchange channel 3, which is conducive to sufficient heat exchange with the inner flow tube 2.

[0036] In another embodiment provided by the present invention, the heat exchanger structure prepared in the above-mentioned manner includes a machine platform 6, on which a pipe fixing mechanism 7 and a pipe inserting mechanism 8 are provided. The pipe inserting mechanism 8 can insert the inner flow pipe 2 into the outer pipe body 1 on the pipe fixing mechanism 7.

[0037] The pipe fixing mechanism 7 has a loose state and a clamping state. The pipe fixing mechanism 7 can fix the outer tube body 1 in the clamping state. The pipe fixing mechanism 7 includes a plurality of first brackets 7.1. Each first bracket 7.1 is provided with a first card slot 7.2. An anti-slip gasket 7.3 is fixed in each first card slot 7.2. The first card slot 7.2 is located at both ends of each first bracket 7.1. Preferably, the groove body of the first card slot 7.2 is a "V"-shaped structure or a "C"-shaped structure. The anti-slip gasket 7.3 is an elastic rubber gasket. The anti-slip gasket 7.3 When the spacing between two adjacent first brackets 7.1 on the groove surface where the first clamping groove 7.2 can contact the outer tube body 1 in the same horizontal plane is smaller than the clamping diameter of the outer tube body 1, the two opposite first clamping grooves 7.2 constitute a clamping structure capable of clamping the outer tube body 1, and the tube fixing mechanism 7 is in a clamping state. When the spacing between two adjacent first brackets 7.1 is larger than the clamping diameter of the outer tube body 1, the tube fixing mechanism 7 is in a loose state. When the tube fixing mechanism 7 is in the loose state, the outer tube body 1 can be detached from the tube fixing mechanism 7.

[0038] In another embodiment provided by the present invention, the tube insertion mechanism 8 includes a supporting component 8.1 and a pushing component 8.2, and the pushing component 8.2 includes a rotating roller 8.21 capable of contacting the inner flow tube 2, and the rotating roller 8.21 pushes the inner flow tube 2 into the outer tube body 1 on the tube fixing mechanism 7 by friction when rotating;

[0039] Specifically, the supporting assembly 8.1 includes a second bracket 8.11, on which a second card slot 8.12 and a slot 8.13 are provided, both of which are located at the top of the second bracket 8.11, a supporting ball 8.14 is rotatably installed in the slot body of the second card slot 8.12, the slot body of the second card slot 8.12 is a "U"-shaped structure, the slot depth value of the slot 8.13 is greater than the slot depth value of the second card slot 8.12, the roller body of the rotating roller 8.21 is located in the slot 8.13, both ends of the rotating roller 8.21 extend out of the slot 8.13, both ends of the rotating roller 8.21 are rotatably connected to a roller bracket 8.22 fixed to the machine table 6, the rotating roller 8.21 includes a roller shaft rod 8.211, the roller shaft rod 8.211 is a tooth column rod, and the rod body of the roller shaft rod 8.211 is sleeved with an anti-slip rubber soft sleeve 8.212;

[0040] In actual use, the inner flow tube 2 is placed in the second clamping groove 8.12, and the bottom of the inner flow tube 2 contacts the top of the rotating roller 8.21. When the rotating roller 8.21 rotates, the inner flow tube 2 moves toward the outer tube body 1 on the fixing tube mechanism 7 under the friction force of the anti-slip rubber soft sleeve 8.212.

[0041] In another embodiment provided by the present invention, a transmission belt mechanism 6.1 is provided on the machine 6, the pipe fixing mechanism 7 and the second bracket 8.11 are both located on the carrier belt 6.2 of the transmission belt mechanism 6.1, the line between the first card slot 7.2 and the second card slot 8.12 is perpendicular to the moving direction line of the carrier belt 6.2, the pipe fixing mechanism 7 is linearly arranged along the moving direction line of the carrier belt 6.2, thereby forming a pipe clamping line on the carrier belt 6.2, and the second bracket 8.11 is linearly arranged along the moving direction line of the carrier belt 6.2, thereby forming a pipe clamping line on the carrier belt 6.2. The carrying belt 6.2 forms a trust line, and the clamping line and the trust line are each provided with at least two groups. The axis line of the outer tube body 1 on the first clamping groove 7.2 and the axis line of the inner flow tube 2 on the second clamping groove 8.12 are on the same straight line. The outer tube body 1 and the inner flow tube 2 move synchronously with the carrying belt 6.2 on the horizontal plane. The outer tube body 1 and the inner flow tube 2 are relatively stationary in the moving direction of the carrying belt 6.2. During the movement, the inner flow tube 2 moves toward the inner side of the outer tube body 1 on the tube fixing mechanism 7 under the friction force of the rotating roller 8.21. The inner flow tube 2 moves synchronously with the second support block 8.11, so the inner flow tube 2 is subjected to the friction force of the rotating roller 8.21 and also undergoes axial rotation, so that the movement state of the inner flow tube 2 during the insertion of the outer tube body 1 is a spiral rotation inserted into the outer tube body 1, which is conducive to reducing the insertion resistance and making the entire insertion process smoother. When the plugged inner flow tube 2 and the outer tube body 1 reach the conveying end of the carrier belt 6.2, the fixing tube mechanism 7 and the second support block 8.11 are both facing the transmission belt machine. The inner tube body 1 and the outer tube body 1 are moved downwardly by the outer tube body 6.1, so that the tube fixing mechanism 7 is in a loose state, the rotating roller 8.21 is relatively separated from the second clamping groove 8.12 and the slot 8.13, and the plugged inner flow tube 2 and the outer tube body 1 are also detached from the machine table 6. During the whole process, the clamping and releasing of the outer tube body 1, and the movement and rotation of the inner flow tube 2 are automatically completed, so that the outer tube body 1 and the inner flow tube 2 are automatically plugged in, which improves the continuity of the plugging of the outer tube body 1 and the inner flow tube 2, and improves the degree of automation of the plugging and the work efficiency.

[0042] In another embodiment provided by the present invention, the roller bracket 8.22 includes a base frame 8.221 fixed to the machine table 6, the frame body of the base frame 8.221 is higher than the upper position of the loading belt 6.2, a support plate 8.222 is fixed to the top of the base frame 8.221, an annular groove 8.213 is provided on the rod body of the roller shaft rod 8.211, and a mounting opening 8.223 is provided on the side of the support plate 8.222, and the roller shaft rod 8.211 is rotatably connected to the mounting opening 8.223 through the annular groove 8.213.

[0043] In another embodiment provided by the present invention, a mounting opening 6.3 for accommodating a transmission belt mechanism 6.1 is provided on the top of the machine 6, a belt roller 6.4 of the transmission belt mechanism 6.1 is rotatably mounted on the side wall of the mounting opening 6.3, a transmission shaft 6.5 is rotatably mounted on the mounting opening 6.3, an axis of the transmission shaft 6.5 is skewed and perpendicular to the axis of the belt roller 6.4, the axis of the transmission shaft 6.5 is parallel to the horizontal plane, and a first gear 10 and a second gear 11 are fixed on the transmission shaft 6.5. The second gear 11 is meshed with the roller shaft 8.211 through the toothed belt 13 for transmission. A plurality of shaft rods 9 corresponding to the first brackets 7.1 are fixed on the belt body of the carrier belt 6.2. Both ends of the shaft rod 9 extend out of the side of the carrier belt 6.2. The shaft rod 9 forms a toothed structure that can mesh with the first gear 10 on the side of the belt body of the carrier belt 6.2. The length direction line of the shaft rod 9 is perpendicular to the moving direction line of the carrier belt 6.2. The bottom middle part of the first bracket 7.1 is hinged to the shaft rod 9.

[0044] In actual use, during the movement of the carrier belt 6.2, the carrier belt 6.2 at the end of the belt roller 6.4 meshes with the first gear 10 through the toothed structure formed by the shaft rod 9, thereby causing the transmission shaft 6.5 to rotate axially, and then the roller shaft rod 8.211 rotates under the transmission action of the second gear 11 and the toothed belt 13, thereby realizing that the transmission belt mechanism 6.1 provides driving force for the rotation of the roller shaft rod 8.211, and each of the parallel arranged roller shaft rods 8.211 can also be connected through the toothed belt 13.

[0045] In another embodiment provided by the present invention, a plug-in cavity 7.21 is provided on the groove body of the first card slot 7.2, and a plurality of stacked plug-in plates 7.22 are filled in the plug-in cavity 7.21, and the plug-in ends of each plug-in plate 7.22 are connected by a spring 7.23, and a rubber sleeve 7.24 is fixed to the protruding end of each plug-in plate 7.22, and the same side of each plug-in plate 7.22 is a rough edge surface composed of a plurality of wedge-shaped protrusions 7.26, and an oblique opening 7.25 connected to the plug-in cavity 7.21 is provided on the side of the first bracket 7.1, and a card-limiting strip 7.27 capable of engaging with the wedge-shaped protrusions 7.26 is provided in the oblique opening 7.25, and a plurality of cylindrical protrusions 14 are also fixed on the strip body of the card-limiting strip 7.27, and a telescopic rod 7.28 is movably inserted in one end of the shaft rod 9 close to the fixing tube mechanism 7, and a long strip through-hole 7.29 is provided on the rod body of the shaft rod 9, and the card-limiting strip 7. 27 is movable through the long strip opening 7.29, the bottom end of the limit strip 7.27 is fixed to the telescopic rod 7.28, a track bar 12 is provided on the top of the carrying belt 6.2, both ends of the track bar 12 are fixed to the machine 6, the side of the track bar 12 is located on the track line of the telescopic rod 7.28 in the moving direction of the carrying belt 6.2, the rod body of the telescopic rod 7.28 is slidably connected to the track bar 12, and the telescopic rod 7.28 can change the plug-in state on the shaft rod 9 according to the track change of the track bar 12. Specifically, the track bar 12 is an iron long strip body, the track bar 12 includes a raised section 12.1 and two avoidance sections 12.2, the two avoidance sections 12.2 are located at both ends of the raised section 12.1, and the extended end of the telescopic rod 7.28 is fixed with a magnet block 15 that can be attracted to the track bar 12. Preferably, the magnet block 15 is rotatably connected to the end of the telescopic rod 7.28;

[0046] In actual use, when the first bracket 7.1 is at the top of the carrying belt 6.2, each plugging plate 7.22 is in contact with the outer tube body 1 under the elastic action of the spring 7.23, so that a structure that is compatible with the outer contour specification and shape of the outer tube body 1 is formed in the first card slot 7.2, and the rubber sleeve 7.24 increases the friction between the plugging plate 7.22 and the outer tube body 1. During the movement of the first bracket 7.1 at the top of the carrying belt 6.2, when the telescopic rod 7.28 reaches the raised section 12.1 of the track bar 12, under the squeezing action of the raised section 12.1 of the track bar 12, the telescopic rod 7.28 is in a state of being inserted into the shaft rod 9, so that the card limit strip 7.27 fixed to the telescopic rod 7.28 moves synchronously, and the card limit strip 7.27 moves toward the rough edge surface of each plugging plate 7.22 until it is in contact with the same side surface of the plugging plate 7.22. The adaptable meshing limits the position of each plugging plate 7.22 in the plug-in cavity 7.21. At the same time, when the card limit strip 7.27 approaches the plugging plate 7.22, the cylindrical protrusion 14 on the bar body of the card limit strip 7.27 is squeezed with the inclined surface of the wedge-shaped protrusion 7.26, so that each plugging plate 7.22 moves toward the outer tube body 1, thereby applying further clamping force to the outer tube body 1 in the first card slot 7.2, thereby improving the stability of the outer tube body 1 in the first card slot 7.2; when the telescopic rod 7.28 reaches the avoidance section 12.2 of the track bar 12, at this time, under the pulling action of the magnet block 15, the telescopic rod 7.28 is in an extended state, and the card limit strip 7.27 is separated from each plugging plate 7.22, and the card limit strip 7.27 releases the limit lock on the plugging plate 7.22 until the telescopic rod 7.28 is separated from the track bar 12.

[0047] In another embodiment provided by the present invention, the transmission shaft 6.5 and the belt roller 6.4 can be connected to each other through two mutually meshing bevel gears 16.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pipe threading mechanism for a heat exchanger structure, comprising an outer pipe body (1) and an inner flow pipe (2), characterized in that: The machine platform (6) is provided with a tube fixing mechanism (7) and a tube inserting mechanism (8), wherein the tube inserting mechanism (8) is capable of inserting the inner flow tube (2) into the outer tube body (1) on the tube fixing mechanism (7), and the tube fixing mechanism (7) has a loose state and a clamping state, and the tube fixing mechanism (7) is capable of fixing the outer tube body (1) in the clamping state; The pipe fixing mechanism (7) comprises a plurality of first support blocks (7.1), each of the first support blocks (7.1) is provided with a first card slot (7.2), each of the first card slots (7.2) is fixed with an anti-slip pad (7.3), a slot body of the first card slot (7.2) is provided with a plug-in cavity (7.21), the plug-in cavity (7.21) is filled with a plurality of stacked plug-in plates (7.22), the plug-in ends of each of the plug-in plates (7.22) are connected via a spring (7.23), and each of the plug-in plates (7.22) is connected to the other by a spring (7.23). The protruding ends of the plug plates (7.22) are all fixed with rubber sleeves (7.24), the same side surface of each plug plate (7.22) is a rough edge surface formed by a plurality of wedge-shaped protrusions (7.26), an oblique opening (7.25) connected to the plug-in cavity (7.21) is provided on the side surface of the first support block (7.1), a clamping strip (7.27) capable of clamping and engaging with the wedge-shaped protrusions (7.26) is provided in the oblique opening (7.25), and a plurality of cylindrical protrusions (14) are fixed on the strip body of the clamping strip (7.27); The tube insertion mechanism (8) comprises a supporting component (8.1) and a pushing component (8.2); the pushing component (8.2) comprises a rotating roller (8.21) capable of contacting the inner flow tube (2); when the rotating roller (8.21) rotates, the inner flow tube (2) is pushed into the outer tube body (1) on the tube fixing mechanism (7) by friction; the supporting component (8.1) comprises a second supporting block (8.11); the second supporting block (8.11) is provided with a second card slot (8.12) and a slot (8.13); The machine platform (6) is provided with a transmission belt mechanism (6.1); the pipe fixing mechanism (7) and the second support block (8.11) are both located on the load-carrying belt (6.2) of the transmission belt mechanism (6.1); a line between the first card slot (7.2) and the second card slot (8.12) is perpendicular to a moving direction line of the load-carrying belt (6.2); a plurality of shaft rods (9) corresponding to the first support blocks (7.1) are fixed on the belt body of the load-carrying belt (6.2); a telescopic rod (7.28) is movably inserted into one end of the shaft rod (9) close to the pipe fixing mechanism (7); and a long strip opening (7.29) is provided on the rod body of the shaft rod (9). The limiting strip (7.27) movably passes through the long strip opening (7.29); the bottom end of the limiting strip (7.27) is fixed to the telescopic rod (7.28); a track strip (12) is provided on the top of the load-carrying belt (6.2); both ends of the track strip (12) are fixed to the machine platform (6); the side surface of the track strip (12) is located on the track line of the telescopic rod (7.28) in the moving direction of the load-carrying belt (6.2); the rod body of the telescopic rod (7.28) is slidably connected to the track strip (12); and the telescopic rod (7.28) can change the plugging state of the shaft rod (9) according to the track change of the track strip (12).

2. A pipe threading mechanism for a heat exchanger structure according to claim 1, characterized in that: Both ends of the rotating roller (8.21) are fixed to the machine platform (6) via roller brackets (8.22).

3. A pipe threading mechanism for a heat exchanger structure according to claim 2, characterized in that: A supporting ball (8.14) is rotatably mounted in the groove body of the second groove (8.12).

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