Tube head guiding device for heat exchange tube penetration

Abstract

The invention relates to the technical field of heat exchanger installation, in particular to a heat exchange tube penetrating tube head guiding device which comprises a guiding assembly, the guiding assembly is of a conical circular truncated cone structure, an adjusting assembly is rotationally installed on the small-diameter side of the guiding assembly, one end of the adjusting assembly penetrates through the axis of the guiding assembly, and the other end of the adjusting assembly penetrates through the axis of the guiding assembly. One end of the adjusting assembly is provided with a guide assembly and extends to the outer side of the large diameter of the guide assembly, the heat exchange tube head is located on the large-diameter side of the guide assembly, the other end of the adjusting assembly is provided with a plurality of inner supporting assemblies capable of synchronously sliding inwards or outwards, and the inner supporting assemblies are used for abutting against the inner side face of the heat exchange tube head. According to the invention, while the installation of the heat exchange tube is ensured, the assembly difficulty and the machining precision are reduced, the working efficiency is greatly improved, the manufacturing cost is reduced, the guide device facilitates the replacement of the heat exchange tube head, the quick disassembly can be realized, the secondary utilization is facilitated, and the blind penetration efficiency can be greatly improved through the conical guide assembly.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchanger installation, and in particular to a pipe head guiding device for a heat exchange pipe to pass through the pipe. Background Art

[0002] In the petroleum refining, fine chemical, coal chemical, energy, medicine and other industries, there are generally heat exchangers, tube-in-tube reactors and other equipment, and there are situations where heat exchange (reaction) tubes need to be blindly penetrated.

[0003] With the development of large-scale equipment, the number of tubes in a single device will gradually increase (up to 10,000), the length of the tubes will continue to grow, and the number of support plates that the heat exchange tubes need to pass through will also increase. Due to the influence of processing accuracy and the bending of the tubes due to their own weight, higher requirements are put forward for the blind penetration of heat exchange tubes. As the length of the tubes increases, the dead weight causes bending, and the tube penetration work cannot be carried out accurately and quickly, affecting the efficiency of the blind penetration of the heat exchange (reaction) tubes.

[0004] Therefore, it is necessary to invent a tube head guiding device for passing a heat exchange tube through the tube to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a pipe head guiding device for the pipe threading of a heat exchange tube, which can reduce the construction cost, improve the construction efficiency and ensure the construction quality through modular setting.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a pipe head guiding device for a heat exchange pipe to pass through a pipe, comprising a guide assembly, the guide assembly being a conical truncated cone structure, an adjusting assembly being rotatably mounted on a small diameter side of the guide assembly, one end of the adjusting assembly passing through the axis of the guide assembly and extending to the outside of the large diameter thereof, the heat exchange pipe head being located on the large diameter side of the guide assembly, a plurality of inner support assemblies capable of synchronously sliding inward or outward being mounted on the other end of the adjusting assembly, the inner support assemblies being used to abut against the inner side surface of the heat exchange pipe head, and the adjusting assembly being used to control the opening and closing of the inner support assemblies by rotation; When the inner support assembly is opened, the inner support assembly expands outward to fix the heat exchange tube head; When the inner support assembly is closed, the inner support assembly shrinks inwardly, and the heat exchange tube head is separated from the inner support assembly.

[0007] As a preferred solution of a tube head guiding device for a heat exchange tube, the adjusting assembly is an extended adjusting rod, the inner supporting assembly is a threaded supporting assembly, the extended adjusting rod includes a threaded rod and a mounting bolt, the mounting bolt is fixedly connected to the threaded rod and is located on the side of the small diameter of the guiding assembly, the threaded rod is threadedly connected to the axis of the guiding assembly, and the threaded rod is located on the side of the large diameter and is threadedly connected to the threaded supporting assembly.

[0008] As a preferred solution of a pipe head guiding device for threading a heat exchange tube, the threaded support assembly comprises a fixed joint, a left swing arm, an ejection block, a right swing arm and a movable joint. A plurality of the fixed joints are fixedly installed on one side of the major diameter of the guide assembly. The fixed joints are arranged at equal distances along a ring. The movable joint is threadedly connected to the threaded rod and is located at the far end of the threaded rod. The two ends of the left swing arm are respectively hinged to the fixed joint and the ejection block, and the two ends of the right swing arm are respectively hinged to the ejection block and the movable joint. The hinge points of the fixed joint and the movable joint are in the same plane, and the end surface of the ejection block is provided with a plurality of anti-slip patterns for increasing friction.

[0009] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said adjusting assembly is an inwardly rotating adjusting rod, and said inner support assembly is a sliding support assembly. said inwardly rotating adjusting rod comprises a sliding shaft, a threaded locking block, a sliding block, a rotating shaft and an arc-shaped guide head. said sliding block is arranged on the outside of said sliding shaft, and said sliding shaft slides back and forth along the axis of said guide assembly. said end of said sliding shaft is fixedly connected with said sliding support assembly. said rotating shaft is located at the axis of said sliding shaft, one end of said rotating shaft is rotatably connected with said arc-shaped guide head, and one end of said arc-shaped guide head is fixedly connected with said threaded locking block. said curved surface of said arc-shaped guide head is provided with a plurality of disassembly slots for facilitating rotation. said guide assembly is provided with an annular threaded groove which can be threadedly connected with said threaded locking block, and is adapted to be provided with a plurality of slide rails for sliding said slide blocks. said conical surface of said guide assembly has the same inclination angle as that of said conical surface of said arc-shaped guide head.

[0010] As a preferred solution of a tube head guiding device for passing a heat exchange tube through a tube, the sliding support assembly comprises two fixed joints, two left swing arms, two ejection blocks, two right swing arms and two movable joints, the two fixed joints are fixedly installed on one side of the guide assembly, the two ends of the two left swing arms are respectively hinged to the two fixed joints and the two ejection blocks, the two ends of the two right swing arms are respectively hinged to the two ejection blocks and the two movable joints, the two movable joints are fixedly connected to the end of the sliding shaft, the two fixed joints are located on the outside of the axis of the guide assembly, and the two movable joints are located on the inside of the guide assembly; when the thread locking block is screwed into the annular thread groove, the two ejection blocks fix the heat exchange tube head; when the thread locking block is separated from the annular thread groove, the two ejection blocks are separated from the heat exchange tube head.

[0011] As a preferred solution of a tube head guiding device for threading a heat exchange tube, the guiding assembly is a guiding cone head 1, and the guiding cone head 1 includes a connecting rod and a limiting ring. An inner concave surface is provided at the large diameter of the guiding cone head 1, and a plurality of the connecting rods are fixedly connected with the limiting ring together, and the connecting rods and the limiting ring are used to limit the outer side of the heat exchange tube head.

[0012] As a preferred solution of a tube head guiding device for threading a heat exchange tube, the guiding component is a guiding cone head three, and a plurality of weight-reducing grooves are provided on the end surface of the guiding cone head three, and the weight-reducing grooves are provided at equal distances.

[0013] As a preferred solution of a tube head guiding device for threading a heat exchange tube, the guiding assembly is a guiding cone head four, and the guiding cone head four includes a hinge block, an arc-shaped guide plate and an ejection spring. The conical surface of the guiding cone head four is provided with a plurality of mounting grooves at equal distances, and the hinge block is fixedly installed inside the plurality of mounting grooves. The hinge block is hinged to one end of the arc-shaped guide plate, and an inclined surface is provided inside the mounting groove. The ejection spring is fixedly installed on the inclined surface, and the other end of the ejection spring is fixedly connected to the bottom end of the arc-shaped guide plate.

[0014] As a preferred solution of a tube head guiding device for a heat exchange tube to pass through the tube, the major diameter of the guide component is adapted to the size of the tube hole inside the heat exchanger.

[0015] The beneficial effects of the present invention are: while ensuring the installation of the heat exchange tube, the assembly difficulty and processing accuracy are reduced, the work efficiency is greatly improved, the manufacturing cost is reduced, the guide device is convenient for replacing the heat exchange tube head, and can be quickly disassembled for secondary use. The blind penetration efficiency can be greatly improved through the tapered guide component.

[0016] The present invention improves the internal support method of the heat exchange tube head through a specific form of structure. The guide device using an inner rotating adjustment rod can make the large diameter of the arc-shaped guide head fit with the small diameter of the guide component while fixing the heat exchange tube head, so that the end face of the guide device is tapered as a whole, which can ensure the effect of blind penetration. For the guide device using an extended adjustment rod, the left swing rod 1 and the right swing rod 1 in the threaded support assembly can slide inward synchronously, the end face of the ejection block 1 remains parallel to the axis of the threaded rod, and the anti-slip pattern on the top can fit tightly with the inner wall of the heat exchange tube head, so as to achieve a better fixing effect on the heat exchange tube head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required to be used in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a cross-sectional schematic diagram of an open state of an embodiment of the present invention.

[0019] Figure 2 It is a cross-sectional schematic diagram of a closed state of an embodiment of the present invention.

[0020] Figure 3 This is a schematic cross-sectional view of the second embodiment of the present invention in the open state. Figure 1 .

[0021] Figure 4 This is a schematic cross-sectional view of the second embodiment of the present invention in the open state. Figure 2 .

[0022] Figure 5 It is a cross-sectional schematic diagram of the closed state of the fifth embodiment of the present invention.

[0023] Figure 6 It is a cross-sectional schematic diagram of the open state of embodiment 5 of the present invention.

[0024] Figure 7 It is a schematic cross-sectional view of the arc-shaped guide head in embodiment five of the present invention.

[0025] Figure 8 It is a cross-sectional schematic diagram of the closed state of embodiment 3 of the present invention.

[0026] Fig. 9 It is a cross-sectional schematic diagram of the open state of the fourth embodiment of the present invention.

[0027] In the figure: 103. Tube hole; 2. Heat exchange tube head; 3. Inner support assembly; 30. Threaded support assembly; 301. Fixed joint 1; 302. Left swing rod 1; 303. Ejector block 1; 304. Anti-slip pattern; 305. Right swing rod 1; 306. Movable joint 1; 31. Sliding support assembly; 311. Fixed joint 2; 312. Left swing rod 2; 313. Ejector block 2; 314. Right swing rod 2; 315. Movable joint 2; 4. Guide assembly; 411. Annular thread groove; 40. Guide cone head 1; 401. Connecting rod; 402. Inner concave surface; 403. Limiting ring; 42. Guide cone head three; 421. Weight reduction groove; 43. Guide cone head 4; 431. Articulated block; 432. Arc guide plate; 433. Ejection spring; 434. Mounting slot; 5. Adjustment assembly; 50. Extension type adjustment rod; 501. Threaded rod; 502. Mounting bolt; 51. Inwardly rotating adjustment rod; 511. Sliding shaft; 512. Disassembly slot; 513. Thread locking block; 514. Sliding block; 515. Rotating shaft; 516. Arc-shaped guide head. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1:

[0032] This embodiment discloses a pipe head guiding device for passing a heat exchange pipe through a pipe, such as Figure 1 and Figure 2 As shown: it includes a guide component 4, the guide component 4 is a conical truncated cone structure, an adjustment component 5 is rotatably installed on the small diameter side of the guide component 4, one end of the adjustment component 5 passes through the axis of the guide component 4 and extends to the outside of its large diameter, the heat exchange tube head 2 is located on the large diameter side of the guide component 4, and the other end of the adjustment component 5 is installed with a plurality of inner support components 3 that can slide inward or outward synchronously, the inner support components 3 are used to form abutment with the inner side surface of the heat exchange tube head 2, and the adjustment component 5 is used to control the opening and closing of the inner support components 3 by rotation; When the inner support assembly 3 is opened, the inner support assembly 3 expands outward to fix the heat exchange tube head 2; When the inner support assembly 3 is closed, the inner support assembly 3 shrinks inward, and the heat exchange tube head 2 is separated from the inner support assembly 3 .

[0033] The adjustment component 5 is an extended adjustment rod 50, and the internal support component 3 is a threaded support component 30. The extended adjustment rod 50 includes a threaded rod 501 and a mounting bolt 502. The mounting bolt 502 is fixedly connected to the threaded rod 501 and is located on the side of the small diameter of the guide component 4. The threaded rod 501 is threadedly connected to the axis of the guide component 4. The threaded rod 501 is located on the side of the large diameter and is threadedly connected to the threaded support component 30.

[0034] The threaded support assembly 30 includes a fixed joint 301, a left swing rod 302, an ejection block 303, a right swing rod 305 and a movable joint 306. A plurality of the fixed joints 301 are fixedly installed on one side of the major diameter of the guide assembly 4. The fixed joints 301 are arranged equidistantly along a ring. The movable joint 306 is threadedly connected to the threaded rod 501 and is located at the far end of the threaded rod 501. The two ends of the left swing rod 302 are respectively hinged to the fixed joint 301 and the ejection block 303. The two ends of the right swing rod 305 are respectively hinged to the ejection block 303 and the movable joint 306. The hinge points of the fixed joint 301 and the movable joint 306 are in the same plane. The end surface of the ejection block 303 is provided with a plurality of anti-slip patterns 304 for increasing friction. The hinge points of the fixed joint 301 and the movable joint 306 are in the same plane, which can ensure that when the mounting bolt 502 is separated from the small diameter of the guide component 4 by rotation, the multiple ejection blocks 303 are pushed outward synchronously, thereby supporting and fixing the inner diameter of the heat exchange tube head 2. However, if the mounting bolt 502 is loosened outward, the threaded rod 501 will be exposed. During the blind penetration of the heat exchange pipe, a step will appear between the threaded rod 501 and the small diameter of the guide component 4, which may cause the step to be stuck at the pipe hole 103, affecting the blind penetration efficiency of the heat exchange pipe. Embodiment 2:

[0035] like Figure 3 and Figure 4 As shown: The difference between this embodiment and the first embodiment is that the guide assembly 4 is a guide cone head 40, the guide cone head 40 includes a connecting rod 401 and a limiting ring 403, the large diameter of the guide cone head 40 is provided with an inner concave surface 402, a plurality of the connecting rods 401 are fixedly connected with the limiting ring 403, and the connecting rods 401 and the limiting ring 403 are used to limit the outer side of the heat exchange tube head 2. When the guide cone head 40 is used, the inner end face and the outer end face of the heat exchange tube head 2 can be fixed at the same time, and the ejection position of the ejection block 303 is located on the inner side of the limiting ring 403, which effectively prevents the heat exchange tube head 2 from falling off during the tube threading process. Embodiment three:

[0036] like Figure 8 As shown: The difference between this embodiment and the first embodiment is that the guide assembly 4 is a guide cone head 3 42, and the end surface of the guide cone head 3 42 is provided with a plurality of weight-reducing grooves 421, and the weight-reducing grooves 421 are provided at equal distances. The setting of the weight-reducing grooves 421 can greatly reduce the deadweight of the guide cone head 3 42, and effectively reduce the mass of the end of the heat exchange tube head 2 during the tube threading process, reduce the amplitude of its falling, and thus improve the effect of tube threading. Embodiment 4:

[0037] like Fig. 9 As shown: The difference between this embodiment and embodiment 1 is that: the guide assembly 4 is a guide cone head four 43, the guide cone head four 43 includes a hinge block 431, an arc-shaped guide plate 432 and an ejection spring 433, the cone surface of the guide cone head four 43 is provided with a plurality of mounting grooves 434 at equal distances, the hinge block 431 is fixedly installed inside the plurality of mounting grooves 434, the hinge block 431 is hinged to one end of the arc-shaped guide plate 432, the interior of the mounting groove 434 is provided with an inclined surface, the ejection spring 433 is fixedly installed on the inclined surface, and the other end of the ejection spring 433 is fixedly connected to the bottom end of the arc-shaped guide plate 432. By setting the hinge block 431, the arc-shaped guide plate 432 and the ejection spring 433, during the process of threading the pipe, when the arc-shaped guide plate 432 hits the pipe hole 103, the ejection spring 433 will exert a reverse force on the pipe hole 103, so that the axis center of the guide component 4 is offset toward the axis center of the pipe hole 103, thereby improving the guiding effect and reducing the difficulty of blind threading. A guiding slope can be set at the end of the arc-shaped guide plate 432 to avoid the end face of the arc-shaped guide plate 432 being blocked by the pipe hole 103 when the guide cone head four 43 is pulled back, thereby realizing the two-way sliding of the guide cone head four 43. Embodiment five:

[0038] like Figure 5 , Figure 6 and Figure 7 As shown: The difference between this embodiment and the previous embodiment is that: the adjustment component 5 is an inward-rotating adjustment rod 51, the inner support component 3 is a sliding support component 31, the inward-rotating adjustment rod 51 includes a sliding shaft 511, a threaded locking block 513, a slider 514, a rotating shaft 515 and an arc-shaped guide head 516, a plurality of sliders 514 are arranged on the outside of the sliding shaft 511, the sliding shaft 511 reciprocates along the axis of the guide component 4, the end of the sliding shaft 511 is fixedly connected to the sliding support component 31, and the rotating shaft 515 is located at the bottom of the sliding shaft 511. At the axis of the sliding shaft 511, one end of the rotating shaft 515 is rotatably connected with the arc-shaped guide head 516, and one end of the arc-shaped guide head 516 is fixedly connected with the threaded locking block 513. A plurality of disassembly slots 512 for facilitating rotation are provided on the curved surface of the arc-shaped guide head 516. The guide assembly 4 is provided with an annular thread groove 411 that can be threadedly connected with the threaded locking block 513, and is adapted to be provided with a plurality of slide rails for the sliding block 514 to slide. The conical surface of the guide assembly 4 has the same inclination angle as the conical surface of the arc-shaped guide head 516.

[0039] The sliding support assembly 31 includes a second fixed joint 311, a second left swing rod 312, a second ejection block 313, a second right swing rod 314 and a second movable joint 315. The second fixed joint 311 is fixedly installed on one side of the guide assembly 4. The two ends of the second left swing rod 312 are respectively hinged to the second fixed joint 311 and the second ejection block 313. The two ends of the second right swing rod 314 are respectively hinged to the second ejection block 313 and the second movable joint 315. The second movable joint 315 is fixedly connected to the end of the sliding shaft 511. The second fixed joint 311 is located on the outside of the axis of the guide assembly 4, and the second movable joint 315 is located on the inside of the guide assembly 4. When the thread locking block 513 is screwed into the annular thread groove 411, the second ejection block 313 fixes the heat exchange tube head 2. When the thread locking block 513 is separated from the annular thread groove 411, the second ejection block 313 is separated from the heat exchange tube head 2.

[0040] By adopting the inward-rotating adjustment rod 51, the sliding shaft 511 can be driven to slide by the rotation of the arc-shaped guide head 516, thereby realizing the opening and closing of the inner support component 3. The setting of the inward-rotating adjustment rod 51 can make the end face of the arc-shaped guide head 516 fit with the small diameter of the guide component 4 after the inner support component 3 is opened, and combine into a completed curved surface. During the guiding process, the problem of the step in Example 1 being stuck in the pipe hole 103, affecting the blind penetration efficiency of the heat exchange pipe, is avoided.

[0041] The present invention reduces the assembly difficulty and processing accuracy while ensuring the installation of the heat exchange tube, greatly improves the work efficiency, reduces the manufacturing cost, and the guide device is convenient for replacing the heat exchange tube head 2, which can be quickly disassembled and convenient for secondary use. The conical guide component 4 can greatly improve the blind penetration efficiency.

[0042] The present invention improves the internal support method of the heat exchange tube head 2 through a specific form of structure. The guide device using the inner rotating adjustment rod 51 can make the large diameter of the arc-shaped guide head 516 fit with the small diameter of the guide assembly 4 while fixing the heat exchange tube head 2, so that the end face of the guide device is tapered as a whole, which can ensure the effect of blind penetration. For the guide device using the extension adjustment rod 50, the left swing rod 302 and the right swing rod 305 in the threaded support assembly 30 can slide inward synchronously, the end face of the ejection block 303 is kept parallel to the axis of the threaded rod 501, and the anti-slip pattern 304 on the top can fit closely with the inner wall of the heat exchange tube head 2, so as to achieve a better fixing effect on the heat exchange tube head 2.

[0043] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A pipe head guiding device for a heat exchange pipe, characterized in that: The heat exchanger comprises a guide assembly (4), wherein the guide assembly (4) is a conical truncated cone structure, an adjusting assembly (5) is rotatably mounted on the small diameter side of the guide assembly (4), one end of the adjusting assembly (5) passes through the axis of the guide assembly (4) and extends to the outside of the large diameter thereof, the heat exchange tube head (2) is located on the large diameter side of the guide assembly (4), and the other end of the adjusting assembly (5) is mounted with a plurality of inner support assemblies (3) capable of synchronously sliding inward or outward, the inner support assemblies (3) being used to form abutment with the inner side surface of the heat exchange tube head (2), and the adjusting assembly (5) being used to control the opening and closing of the inner support assemblies (3) by rotation; When the inner support assembly (3) is opened, the inner support assembly (3) expands outwards to fix the heat exchange tube head (2); When the inner support assembly (3) is closed, the inner support assembly (3) shrinks inwards, and the heat exchange tube head (2) is separated from the inner support assembly (3).

2. A pipe head guiding device for passing a heat exchange pipe through a pipe according to claim 1, characterized in that: The adjustment assembly (5) is an extended adjustment rod (50), the inner support assembly (3) is a threaded support assembly (30), the extended adjustment rod (50) comprises a threaded rod (501) and a mounting bolt (502), the mounting bolt (502) and the threaded rod (501) are fixedly connected and are located on the side of the small diameter of the guide assembly (4), the threaded rod (501) is threadedly connected to the axis of the guide assembly (4), and the threaded rod (501) is located on the side of the large diameter and is threadedly connected to the threaded support assembly (30).

3. A pipe head guiding device for passing a heat exchange pipe through a pipe according to claim 2, characterized in that: The threaded support assembly (30) comprises a fixed joint (301), a left swing rod (302), an ejector block (303), a right swing rod (305) and a movable joint (306). A plurality of the fixed joints (301) are fixedly mounted on one side of the major diameter of the guide assembly (4). The fixed joints (301) are arranged at equal distances along a ring. The movable joint (306) is threadedly connected to the threaded rod (501) and is located at the far end of the threaded rod (501). At the end position, the two ends of the left swing rod 1 (302) are respectively hinged with the fixed joint 1 (301) and the ejection block 1 (303), and the two ends of the right swing rod 1 (305) are respectively hinged with the ejection block 1 (303) and the movable joint 1 (306), the hinge points of the fixed joint 1 (301) and the movable joint 1 (306) are in the same plane, and the end surface of the ejection block 1 (303) is provided with a plurality of anti-skid patterns (304) for increasing friction.

4. A pipe head guiding device for heat exchange pipe threading according to claim 1, characterized in that: The adjustment assembly (5) is an inwardly rotating adjustment rod (51), the inner support assembly (3) is a sliding support assembly (31), the inwardly rotating adjustment rod (51) comprises a sliding shaft (511), a threaded locking block (513), a slider (514), a rotating shaft (515), and an arc-shaped guide head (516), a plurality of sliders (514) are arranged on the outside of the sliding shaft (511), the sliding shaft (511) reciprocates along the axis of the guide assembly (4), the end of the sliding shaft (511) is fixedly connected to the sliding support assembly (31), and the rotating shaft (515) is located on the sliding shaft ( The guide assembly (4) is provided with an annular thread groove (411) capable of being threadedly connected to the threaded locking block (513), and a plurality of slide rails for sliding the slider (514) are provided thereon. The conical surface of the guide assembly (4) and the conical surface of the arc-shaped guide head (516) have the same inclination angle.

5. A pipe head guiding device for heat exchange pipe threading according to claim 4, characterized in that: The sliding support assembly (31) comprises a second fixed joint (311), a second left swing rod (312), a second ejection block (313), a second right swing rod (314) and a second movable joint (315); the second fixed joint (311) is fixedly mounted on one side of the guide assembly (4); the two ends of the second left swing rod (312) are respectively hinged to the second fixed joint (311) and the second ejection block (313); the two ends of the second right swing rod (314) are respectively hinged to the second ejection block (313) and the second movable joint (315); The second movable joint (315) is fixedly connected to the end of the sliding shaft (511); the second fixed joint (311) is located on the outside of the axis of the guide assembly (4); and the second movable joint (315) is located on the inside of the guide assembly (4); when the thread locking block (513) is screwed into the annular thread groove (411), the second ejection block (313) fixes the heat exchange tube head (2); when the thread locking block (513) is separated from the annular thread groove (411), the second ejection block (313) is separated from the heat exchange tube head (2).

6. A pipe head guiding device for heat exchange pipe threading according to claim 3 or 5, characterized in that: The guide assembly (4) is a guide cone head (40), and the guide cone head (40) comprises a connecting rod (401) and a limiting ring (403). An inner concave surface (402) is provided at the large diameter of the guide cone head (40), and a plurality of the connecting rods (401) are fixedly connected to the limiting ring (403). The connecting rods (401) and the limiting ring (403) are used to limit the outer side of the heat exchange tube head (2).

7. A pipe head guiding device for passing a heat exchange pipe through a pipe according to claim 3 or 5, characterized in that: The guide assembly (4) is a guide cone head three (42), and a plurality of weight-reducing grooves (421) are provided on the end surface of the guide cone head three (42), and the weight-reducing grooves (421) are provided at equal distances.

8. A pipe head guiding device for heat exchange pipe threading according to claim 3 or 5, characterized in that: The guide assembly (4) is a guide cone head four (43), and the guide cone head four (43) comprises a hinge block (431), an arc-shaped guide plate (432) and an ejection spring (433). The cone surface of the guide cone head four (43) is provided with a plurality of mounting grooves (434) at equal intervals. The hinge block (431) is fixedly installed inside the plurality of mounting grooves (434). The hinge block (431) is hinged to one end of the arc-shaped guide plate (432). An inclined surface is provided inside the mounting groove (434). The ejection spring (433) is fixedly installed on the inclined surface. The other end of the ejection spring (433) is fixedly connected to the bottom end of the arc-shaped guide plate (432).

9. A pipe head guiding device for heat exchange pipe threading according to claim 1, characterized in that: The major diameter of the guide assembly (4) is compatible with the size of the internal tube hole (103) of the heat exchanger.

Images