A tube head guiding device for a heat exchange tube

Abstract

This invention relates to the field of heat exchanger installation technology, specifically to a tube head guiding device for heat exchanger tube insertion. The device includes a guiding assembly, which is a conical frustum structure. An adjusting assembly is rotatably mounted on the smaller diameter side of the guiding assembly. One end of the adjusting assembly passes through the axis of the guiding assembly and extends to the outside of its larger diameter. The heat exchanger tube head is located on the larger diameter side of the guiding assembly. Multiple inner support assemblies capable of sliding synchronously inward or outward are mounted on the other end of the adjusting assembly. These inner support assemblies abut against the inner surface of the heat exchanger tube head. This invention, while ensuring heat exchanger tube installation, reduces assembly difficulty and processing accuracy, significantly improves work efficiency, and reduces manufacturing costs. The guiding device facilitates the replacement of heat exchanger tube heads, enabling quick disassembly and reuse. The conical guiding assembly significantly improves blind insertion efficiency.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger installation technology, and more specifically to a tube head guiding device for heat exchanger tube insertion. Background Technology

[0002] In industries such as petroleum refining, fine chemicals, coal chemicals, energy, and pharmaceuticals, there are common situations where heat exchangers, tube reactors, and other equipment require blind penetration of heat exchange (reaction) tubes.

[0003] As equipment becomes larger, the number of tubes in a single unit will gradually increase (reaching tens of thousands), and the tube length will continue to grow. This means that the number of support plates that the heat exchange tubes need to pass through during blind insertion is also increasing. Due to the influence of processing precision and the bending caused by the tubes' own weight, higher requirements are placed on the blind insertion of heat exchange tubes. With the increase in tube length, the weight causes bending, making it impossible to perform the insertion work accurately and quickly, thus affecting the efficiency of the blind insertion of heat exchange (reaction) tubes.

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

[0005] The purpose of this invention is to provide a tube head guiding device for heat exchanger tube insertion, which, through modular design, aims to reduce construction costs, improve construction efficiency, and ensure construction quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A tube head guiding device for heat exchanger tube insertion is provided, including a guiding assembly, which is a conical frustum structure. An adjusting assembly is rotatably mounted on the small diameter side of the guiding assembly. One end of the adjusting assembly passes through the axis of the guiding assembly and extends to the outside of its large diameter. The heat exchanger tube head is located on the side of the large diameter of the guiding assembly. A plurality of inner support assemblies capable of sliding synchronously inward or outward are mounted on the other end of the adjusting assembly. The inner support assemblies are used to abut against the inner surface of the heat exchanger tube head. The adjusting assembly is used to control the opening and closing of the inner support assemblies by rotation.

[0008] When the internal support assembly is opened, the internal support assembly expands outward to fix the heat exchange tube head;

[0009] When the inner support assembly is closed, it shrinks inward, and the heat exchange tube head separates from the inner support assembly.

[0010] As a preferred embodiment of a tube head guiding device for heat exchanger tubes, the adjusting component is an extended adjusting rod, and the inner support component is a threaded support component. The extended adjusting rod includes a threaded rod and a mounting bolt. The mounting bolt and the threaded rod form a fixed connection and are located on the side of the small diameter of the guiding component. The threaded rod and the axis of the guiding component form a threaded connection. The threaded rod is located on the side of the large diameter and forms a threaded connection with the threaded support component.

[0011] As a preferred embodiment of a tube-head guiding device for heat exchanger tube insertion, the threaded support assembly includes a fixed joint, a left swing arm, an ejector block, a right swing arm, and a movable joint. Multiple fixed joints are fixedly installed on one side of the guide assembly's large diameter. The fixed joints are evenly spaced along a ring. The movable joint is threadedly connected to the threaded rod and located at the distal end of the threaded rod. The two ends of the left swing arm are hinged to the fixed joint and the ejector block, respectively. The two ends of the right swing arm are hinged to the ejector block and the movable joint, respectively. The hinge points of the fixed joint and the movable joint are in the same plane. The end face of the ejector block has multiple anti-slip grooves to increase friction.

[0012] As a preferred embodiment of a tube-head guiding device for heat exchanger tubes, the adjusting component is an internally rotating adjusting rod, and the internal support component is a sliding support component. The internally rotating adjusting rod includes a sliding shaft, a threaded locking block, a slider, a rotating shaft, and an arc-shaped guide head. Multiple sliders are located outside the sliding shaft. The sliding shaft reciprocates along the axis of the guiding component. The end of the sliding shaft is fixedly connected to the sliding support component. The rotating shaft is located at the axis of the sliding shaft. One end of the rotating shaft is rotatably connected to the arc-shaped guide head. One end of the arc-shaped guide head is fixedly connected to the threaded locking block. Multiple disassembly slots for easy rotation are provided on the curved surface of the arc-shaped guide head. The guiding component has an annular threaded groove that can form a threaded connection with the threaded locking block, and multiple slide rails for slider sliding are adapted to be provided. The conical surface of the guiding component has the same inclination angle as the conical surface of the arc-shaped guide head.

[0013] As a preferred embodiment of a tube-head guiding device for heat exchanger tube insertion, the sliding support assembly includes a fixed joint two, a left swing rod two, a push-out block two, a right swing rod two, and a movable joint two. The fixed joint two is fixedly installed on one side of the guide assembly. The two ends of the left swing rod two are respectively hinged to the fixed joint two and the push-out block two. The two ends of the right swing rod two are respectively hinged to the push-out block two and the movable joint two. The movable joint two is fixedly connected to the end of the sliding shaft. The fixed joint two is located on the outer side of the guide assembly's axis, and the movable joint two is located on the inner side of the guide assembly. When the threaded locking block is screwed into the annular threaded groove, the push-out block two fixes the heat exchanger tube head. When the threaded locking block separates from the annular threaded groove, the push-out block two separates from the heat exchanger tube head.

[0014] As a preferred embodiment of a tube head guiding device for heat exchanger tube insertion, the guiding component is a guiding cone, which includes a connecting rod and a limiting ring. The guiding cone has an inner concave surface at its large diameter. Multiple connecting rods are fixedly connected to the limiting ring. The connecting rods and the limiting ring are used to limit the outer side of the heat exchanger tube head.

[0015] As a preferred embodiment of a tube head guiding device for heat exchanger tube insertion, the guiding component is a guide cone three, and the end face of the guide cone three is provided with multiple weight reduction grooves, which are equally spaced.

[0016] As a preferred embodiment of a tube-head guiding device for heat exchanger tubes, the guiding assembly is a guide cone four, which includes a hinge block, an arc-shaped guide plate, and an ejector spring. The cone surface of the guide cone four is provided with multiple mounting slots at equal intervals. The hinge block is fixedly installed inside the multiple mounting slots. The hinge block is hinged to one end of the arc-shaped guide plate. The inside of the mounting slot is provided with an inclined surface. The ejector spring is fixedly installed on the inclined surface. The other end of the ejector spring is fixedly connected to the bottom end of the arc-shaped guide plate.

[0017] As a preferred embodiment of a tube-head guiding device for heat exchanger tubes, the large diameter of the guiding component is adapted to the size of the internal tube holes of the heat exchanger.

[0018] The beneficial effects of this invention are: while ensuring the installation of heat exchange tubes, it reduces assembly difficulty and processing precision, greatly improves work efficiency, reduces manufacturing costs, and the guiding devices facilitate the replacement of heat exchange tube heads, enabling quick disassembly and easy reuse. The conical guiding components can significantly improve blind-penetration efficiency.

[0019] This invention improves the internal support method for heat exchanger tube heads through a specific structural design. The guide device, employing an internally rotating adjusting rod, ensures that the major diameter of the arc-shaped guide head aligns with the minor diameter of the guide assembly while simultaneously fixing the heat exchanger tube head. This results in an overall conical end face of the guide device, guaranteeing a blind-penetration effect. For the guide device using an externally extending adjusting rod, the left and right swing arms in the threaded support assembly slide inwards synchronously. The end face of the ejector block remains parallel to the axis of the threaded rod, and the anti-slip texture on the top ensures a tight fit against the inner wall of the heat exchanger tube head, achieving a better fixation effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a cross-sectional schematic diagram of the open state in Embodiment 1 of the present invention.

[0022] Figure 2 This is a schematic cross-sectional view of the closed state according to Embodiment 1 of the present invention.

[0023] Figure 3 This is a schematic cross-section of the open state in Embodiment 2 of the present invention. Figure 1 .

[0024] Figure 4 This is a schematic cross-section of the open state in Embodiment 2 of the present invention. Figure 2 .

[0025] Figure 5 This is a cross-sectional schematic diagram of the closed state in Embodiment 5 of the present invention.

[0026] Figure 6 This is a cross-sectional schematic diagram of the open state in Embodiment 5 of the present invention.

[0027] Figure 7 This is a schematic diagram of the cross-section of the arc-shaped guide head in Embodiment 5 of the present invention.

[0028] Figure 8 This is a schematic cross-sectional view of the closed state in Embodiment 3 of the present invention.

[0029] Figure 9 This is a cross-sectional schematic diagram of the open state in Embodiment 4 of the present invention.

[0030] In the picture:

[0031] 103. Tube hole; 2. Heat exchange tube head;

[0032] 3. Internal support assembly; 30. Threaded support assembly; 301. Fixed joint 1; 302. Left swing arm 1; 303. Ejector block 1; 304. Anti-slip texture; 305. Right swing arm 1; 306. Movable joint 1;

[0033] 31. Sliding support assembly; 311. Fixed joint two; 312. Left swing arm two; 313. Ejector block two; 314. Right swing arm two; 315. Movable joint two;

[0034] 4. Guide assembly; 411. Annular threaded groove; 40. Guide cone one; 401. Connecting rod; 402. Concave surface; 403. Limiting ring;

[0035] 42. Guide cone three; 421. Weight reduction groove;

[0036] 43. Guide cone four; 431. Hinge block; 432. Arc-shaped guide plate; 433. Ejection spring; 434. Mounting slot;

[0037] 5. Adjustment assembly; 50. Extended adjustment rod; 501. Threaded rod; 502. Mounting bolt;

[0038] 51. Internally rotating adjusting rod; 511. Sliding shaft; 512. Disassembly slot; 513. Threaded locking block; 514. Slider; 515. Rotating shaft; 516. Arc-shaped guide head. Detailed Implementation

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; 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 refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1:

[0043] This embodiment discloses a tube head guiding device for heat exchanger tube insertion, such as... Figure 1 and Figure 2 As shown: It includes a guide assembly 4, which is a conical frustum structure. An adjustment assembly 5 is rotatably mounted on one side of the small diameter of the guide assembly 4. One end of the adjustment assembly 5 passes through the axis of the guide assembly 4 and extends to the outside of its large diameter. The heat exchange tube head 2 is located on one side of the large diameter of the guide assembly 4. The other end of the adjustment assembly 5 is equipped with a plurality of inner support assemblies 3 that can slide synchronously inward or outward. The inner support assemblies 3 are used to form abutment with the inner surface of the heat exchange tube head 2. The adjustment assembly 5 is used to control the opening and closing of the inner support assemblies 3 by rotation.

[0044] When the inner support assembly 3 is opened, the inner support assembly 3 expands outward to fix the heat exchange tube head 2;

[0045] When the inner support assembly 3 is closed, the inner support assembly 3 shrinks inward, and the heat exchange tube head 2 separates from the inner support assembly 3.

[0046] The adjusting component 5 is an extended adjusting rod 50, and the inner support component 3 is a threaded support component 30. The extended adjusting 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 one 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 one side of the large diameter and is threadedly connected to the threaded support component 30.

[0047] The threaded support assembly 30 includes a fixed joint 301, a left swing arm 302, an ejector block 303, a right swing arm 305, and a movable joint 306. Multiple fixed joints 301 are fixedly installed on one side of the major diameter of the guide assembly 4. The fixed joints 301 are arranged at equal intervals along a ring. The movable joint 306 forms a threaded connection with the threaded rod 501 and is located at the distal end of the threaded rod 501. The two ends of the left swing arm 302 are hinged to the fixed joint 301 and the ejector block 303, respectively. The two ends of the right swing arm 305 are hinged to the ejector block 303 and the movable joint 306, respectively. The hinge points of the fixed joint 301 and the movable joint 306 are in the same plane. The end face of the ejector block 303 is provided with multiple anti-slip textures 304 to increase friction. The hinge points of the fixed joint 301 and the movable joint 306 are in the same plane, which ensures that when the mounting bolt 502 is separated from the minor diameter of the guide assembly 4 by rotation, multiple ejector blocks 303 are pushed outward simultaneously, 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 piercing of the heat exchange pipe, a step will appear between the threaded rod 501 and the minor diameter of the guide assembly 4, which may cause the step to get stuck at the pipe hole 103, affecting the blind piercing efficiency of the heat exchange pipe. Example 2:

[0048] like Figure 3 and Figure 4 As shown: The difference between this embodiment and Embodiment 1 is that the guide component 4 is a guide cone 40, which includes a connecting rod 401 and a limiting ring 403. The guide cone 40 has a concave surface 402 at its large diameter. Multiple 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. When the guide cone 40 is used, both the inner and outer end faces of the heat exchange tube head 2 can be fixed simultaneously. The ejection position of the ejector block 303 is located inside the limiting ring 403, effectively preventing the heat exchange tube head 2 from falling off during the tube insertion process. Example 3:

[0049] like Figure 8 As shown: The difference between this embodiment and Embodiment 1 is that the guide component 4 is a guide cone 3 42, and the end face of the guide cone 3 42 is provided with multiple weight-reducing grooves 421, which are equally spaced. The weight-reducing grooves 421 can significantly reduce the weight of the guide cone 3 42, effectively reducing the mass of the end of the heat exchange tube head 2 during the tube insertion process, reducing its descent, and thus improving the tube insertion effect. Example 4:

[0050] like Figure 9 As shown: The difference between this embodiment and Embodiment 1 is that the guide component 4 is a guide cone 43, which includes a hinge block 431, an arc-shaped guide plate 432, and an ejector spring 433. The cone surface of the guide cone 43 has multiple mounting slots 434 at equal intervals. The hinge block 431 is fixedly installed inside the multiple mounting slots 434. The hinge block 431 is hinged to one end of the arc-shaped guide plate 432. The inside of the mounting slot 434 is provided with an inclined surface. The ejector spring 433 is fixedly installed on the inclined surface. The other end of the ejector spring 433 is fixedly connected to the bottom end of the arc-shaped guide plate 432. With the hinge block 431, the arc-shaped guide plate 432, and the ejector spring 433, during the tube insertion process, when the arc-shaped guide plate 432 hits the tube hole 103, the ejector spring 433 will apply a reverse force to the tube hole 103, causing the axis of the guide assembly 4 to shift towards the axis of the tube hole 103, thereby improving the guiding effect and reducing the difficulty of blind insertion. The end of the arc-shaped guide plate 432 can be provided with a guide slope to prevent the end face of the arc-shaped guide plate 432 from being blocked by the tube hole 103 when the guide cone 43 is pulled back, thereby realizing the bidirectional sliding of the guide cone 43. Example 5:

[0051] like Figure 5 , Figure 6 and Figure 7 As shown: The difference between this embodiment and the previous embodiment is that: the adjusting component 5 is an inward-rotating adjusting rod 51, and the inner support component 3 is a sliding support component 31. The inward-rotating adjusting 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. Multiple sliders 514 are located outside 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. The rotating shaft 515 is located... At the axis of the sliding shaft 511, one end of the rotating shaft 515 is rotatably connected to the arc-shaped guide head 516, and one end of the arc-shaped guide head 516 is fixedly connected to the threaded locking block 513. The curved surface of the arc-shaped guide head 516 is provided with multiple disassembly slots 512 for easy rotation. The guide assembly 4 is provided with an annular threaded groove 411 that can be threadedly connected with the threaded locking block 513, and is adapted to provide multiple slide rails for sliding the slider 514. The conical surface of the guide assembly 4 has the same inclination angle as the conical surface of the arc-shaped guide head 516.

[0052] The sliding support assembly 31 includes a fixed joint 311, a left swing arm 312, a push-out block 313, a right swing arm 314, and a movable joint 315. The fixed joint 311 is fixedly installed on one side of the guide assembly 4. The two ends of the left swing arm 312 are hinged to the fixed joint 311 and the push-out block 313, respectively. The two ends of the right swing arm 314 are hinged to the push-out block 313 and the movable joint 315, respectively. The movable joint 315 is fixedly connected to the end of the sliding shaft 511. The fixed joint 311 is located on the outer side of the axis of the guide assembly 4, and the movable joint 315 is located on the inner side of the guide assembly 4. When the threaded locking block 513 is screwed into the annular threaded groove 411, the push-out block 313 fixes the heat exchange tube head 2. When the threaded locking block 513 is separated from the annular threaded groove 411, the push-out block 313 separates from the heat exchange tube head 2.

[0053] By adopting an internally rotating adjusting 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 assembly 3. The setting of the internally rotating adjusting rod 51 allows the end face of the arc-shaped guide head 516 to fit with the small diameter of the guide assembly 4 after the inner support assembly 3 is opened, forming a complete curved surface. During the guiding process, the problem of the step getting stuck at the pipe hole 103 as in Embodiment 1, which affects the blind penetration efficiency of the heat exchange pipeline, is avoided.

[0054] This invention, while ensuring the installation of heat exchange tubes, reduces assembly difficulty and processing precision, greatly improves work efficiency, and lowers manufacturing costs. The guiding devices facilitate the replacement of the heat exchange tube heads 2, enabling rapid disassembly and easy reuse. The conical guide assembly 4 significantly improves blind-penetration efficiency.

[0055] This invention improves the internal support method for the heat exchanger tube head 2 through a specific structural design. The guide device using an internally rotating adjusting rod 51 ensures that while fixing the heat exchanger tube head 2, the large diameter of the arc-shaped guide head 516 fits snugly with the small diameter of the guide assembly 4, making the end face of the guide device conical and guaranteeing a blind-penetration effect. For the guide device using an externally extending adjusting rod 50, the left swing rod 302 and right swing rod 305 in the threaded support assembly 30 slide inwards synchronously, the end face of the ejector block 303 remains parallel to the axis of the threaded rod 501, and the anti-slip texture 304 on the top fits tightly against the inner wall of the heat exchanger tube head 2, achieving a better fixing effect for the heat exchanger tube head 2.

[0056] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A tube head guiding device for heat exchanger tube insertion, characterized in that: Includes a guide assembly (4), which is a conical frustum structure. An adjustment assembly (5) is rotatably mounted on one side of the minor diameter of the guide assembly (4). One end of the adjustment assembly (5) passes through the axis of the guide assembly (4) and extends to the outside of its major diameter. The heat exchange tube head (2) is located on one side of the major diameter of the guide assembly (4). The other end of the adjustment assembly (5) is equipped with multiple inner support assemblies (3) that can slide synchronously inward or outward. The inner support assemblies (3) are used to form abutment with the inner surface of the heat exchange tube head (2). The adjustment assembly (5) is 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 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) separates from the inner support assembly (3); The adjustment component (5) is an extended adjustment rod (50), and the inner 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 one side of the minor 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 one side of the major diameter and is threadedly connected to the threaded support component (30). The adjusting component (5) is an internally rotating adjusting rod (51), and the internal support component (3) is a sliding support component (31). The internally rotating adjusting 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). Multiple sliders (514) are located outside the sliding shaft (511). The sliding shaft (511) slides back and forth along the axis of the guide component (4). The end of the sliding shaft (511) is fixedly connected to the sliding support component (31). The rotating shaft (515) is located on the sliding shaft (516). At the axis of 511), one end of the rotating shaft (515) is rotatably connected to the arc-shaped guide head (516), and one end of the arc-shaped guide head (516) is fixedly connected to the threaded locking block (513). The curved surface of the arc-shaped guide head (516) is provided with multiple disassembly slots (512) for easy rotation. The guide assembly (4) is provided with an annular threaded groove (411) that can form a threaded connection with the threaded locking block (513), and is adapted to provide multiple slide rails for sliding the slider (514). The conical surface of the guide assembly (4) has the same inclination angle as the conical surface of the arc-shaped guide head (516).

2. The tube head guiding device for heat exchanger tube insertion according to claim 1, characterized in that: The threaded support assembly (30) includes a fixed joint (301), a left swing arm (302), an ejector block (303), a right swing arm (305), and a movable joint (306). Multiple fixed joints (301) are fixedly installed on one side of the major diameter of the guide assembly (4). The fixed joints (301) are arranged at equal intervals along a ring. The movable joint (306) forms a threaded connection with 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 arm (302) are respectively hinged to the fixed joint (301) and the ejector block (303), and the two ends of the right swing arm (305) are respectively hinged to the ejector 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 face of the ejector block (303) is provided with multiple anti-slip textures (304) to increase friction.

3. The tube head guiding device for heat exchanger tube insertion according to claim 1, characterized in that: The sliding support assembly (31) includes a fixed joint two (311), a left swing arm two (312), a push-out block two (313), a right swing arm two (314), and a movable joint two (315). The fixed joint two (311) is fixedly installed on one side of the guide assembly (4). The two ends of the left swing arm two (312) are respectively hinged to the fixed joint two (311) and the push-out block two (313). The two ends of the right swing arm two (314) are respectively hinged to the push-out block two (313) and the movable joint two (315). The movable joint two (315) is fixedly connected to the end of the sliding shaft (511). The fixed joint two (311) is located on the outside of the axis of the guide assembly (4), and the movable joint two (315) is located on the inside of the guide assembly (4). When the threaded locking block (513) is screwed into the annular thread groove (411), the ejector block two (313) fixes the heat exchange tube head (2). When the threaded locking block (513) is separated from the annular thread groove (411), the ejector block two (313) separates from the heat exchange tube head (2).

4. A tube head guiding device for heat exchanger tube insertion according to claim 2 or 3, characterized in that: The guide assembly (4) is a guide cone (40), which includes a connecting rod (401) and a limiting ring (403). The guide cone (40) has a concave surface (402) at its large diameter. Multiple connecting rods (401) are fixedly connected with 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).

5. A tube head guiding device for heat exchanger tube insertion according to claim 2 or 3, characterized in that: The guide component (4) is a guide cone three (42), and the end face of the guide cone three (42) is provided with multiple weight reduction grooves (421), which are equally spaced.

6. A tube head guiding device for heat exchanger tube insertion according to claim 2 or 3, characterized in that: The guide assembly (4) is a guide cone four (43), which includes a hinge block (431), an arc-shaped guide plate (432), and an ejector spring (433). The cone surface of the guide cone four (43) is provided with multiple mounting slots (434) at equal intervals. The hinge block (431) is fixedly installed inside the multiple mounting slots (434). The hinge block (431) is hinged to one end of the arc-shaped guide plate (432). The mounting slot (434) is provided with an inclined surface. The ejector spring (433) is fixedly installed on the inclined surface. The other end of the ejector spring (433) is fixedly connected to the bottom end of the arc-shaped guide plate (432).

7. The tube head guiding device for heat exchanger tube insertion according to claim 1, characterized in that: The large diameter of the guide assembly (4) is adapted to the size of the internal tube hole (103) of the heat exchanger.

Images