Guide head for fin tube penetration

Abstract

The utility model provides a guide head for fin tube penetration, which comprises a tube penetration guide head, a first threaded hole is arranged at the center of one end of the tube penetration guide head, and a second threaded hole communicated with the first threaded hole is arranged at the radial position of the tube penetration guide head; the inner supporting screw is in threaded connection with the first threaded hole of the pipe penetrating guide head, and a conical part is formed at the outer diameter of the outer end of the inner supporting screw; the jackscrew is installed in the second threaded hole and can abut against the inner supporting screw. The device is reasonable in design structure, can tightly connect the steel pipe to the guide head by utilizing the expandable inner support chuck, meets the connection requirements of the steel pipes with different inner diameters and sizes and the guide head, avoids the problem that the guide head falls off when shuttling back and forth in a fin group, has the advantages of simple structure, accuracy and rapidness in operation and safety in use, and is suitable for popularization and application. And the requirement for tube penetration of large-batch fins is met, the working efficiency is improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger fin group pipe -through technical field, concretely relates to a kind of for fin pipe -through guide head. BACKGROUND

[0002] Heat exchanger fin tube pipe -through technology is the process of assembling steel pipe with other components (such as tube sheet, fin etc.) of heat exchanger, specifically, steel pipe is inserted through the tube sheet or other support structure of heat exchanger, and is connected with fin component to form complete heat exchanger assembly.

[0003] At present, the existing fin group pipe -through method is to directly insert simple pipe -through guide head into steel pipe (as shown in Figure 8 Due to the unevenness of steel pipe inner diameter tolerance, simple pipe -through guide head is too loose in steel pipe, so that simple pipe -through guide head is easy to fall in fin group when shuttling, and it is difficult to take out simple pipe -through guide head fallen in fin group;Or simple pipe -through guide head is too tight with steel pipe, which causes installation inconvenience. This existing fin pipe -through method cannot meet the demand of mass fin pipe -through, and has the disadvantages of low work efficiency and high labor intensity. INVENTION CONTENTS

[0004] The utility model provides a kind of for fin pipe -through guide head, can utilize expandable inner support chuck to fasten connection steel pipe on guide head, meet the connection demand of different inner diameter size steel pipe and guide head, and avoid the problem of guide head falling when shuttling in fin group, with the advantages of simple structure, accurate and fast operation, safe use, to meet the demand of mass fin pipe -through, improve work efficiency, reduce cost.

[0005] The utility model adopts the technical scheme that a kind of for fin pipe -through guide head, comprising:

[0006] Pipe -through guide head, first threaded hole is opened in the center of one end, and second threaded hole is opened in the radial position of pipe -through guide head and is communicated with first threaded hole;

[0007] Inner support screw is threadedly connected at first threaded hole of pipe -through guide head, and taper portion is formed at outer diameter of outer end;

[0008] Jack screw is installed in second threaded hole, and can abut on inner support screw;

[0009] Inner support assembly is sleeved on the outside of inner support screw and one end is threadedly connected with inner support screw, a plurality of radial through openings are opened in the circumferential direction of one end close to taper portion of inner support screw, and taper hole matched with taper portion is arranged at the outer end of central hole of inner support assembly;

[0010] The steel pipe is sleeved outside the inner support assembly, the top screw is in a screwed state, the inner support screw is driven to rotate by rotating the pipe penetrating guide head, so that the inner support screw moves axially relative to the inner support assembly, and then the tapered hole is driven to open outward by the tapered part, so that the inner support assembly is tightly attached to the inner wall of the steel pipe, and the stable connection between the guide head and the steel pipe is realized.

[0011] The inner support assembly comprises:

[0012] The inner support clamp head is sleeved outside the inner support screw, and the tapered hole and the opening are arranged at one end of the inner support clamp head.

[0013] The inner support clamp head screw sleeve is fixedly connected with the inner support clamp head and is threadedly matched with the inner support screw.

[0014] The outer diameter of the inner support clamp head screw sleeve is greater than the outer diameter of the inner support clamp head, and the inner support clamp head screw sleeve is arranged to abut against one end of the inner support clamp head.

[0015] The four openings are uniformly distributed around the center of the inner support clamp head.

[0016] The outer wall of the pipe penetrating guide head and the inner support clamp head screw sleeve is provided with a clamping part convenient for a wrench to clamp.

[0017] The outer diameter of the inner support screw is formed with a square head, and the end of the top screw can abut against the plane of the square head.

[0018] Two second threaded holes are arranged on the pipe penetrating guide head, and the two second threaded holes are uniformly distributed around the center of the pipe penetrating guide head.

[0019] The other end of the pipe penetrating guide head away from the first threaded hole is in a sharp structure.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model discloses a design structure is reasonable, can utilize the inflatable inner support clamp head and can be fastened and connected on the guide head, satisfies the connection demand of different inner diameter size steel pipe and guide head, and avoids the problem that the guide head falls when shuttling in the fin group, and has the advantages of simple structure, accurate and quick operation, safe use, and is favorable to meet the demand of large quantities of fin pipe, improves work efficiency and reduces cost. DRAWINGS

[0022] Figure 1 It is the perspective view of the utility model;

[0023] Figure 2 It is the sectional view of the utility model;

[0024] Figure 3 It is the explosion view of the utility model;

[0025] Figure 4 It is the perspective view of the inner support chuck of the utility model;

[0026] Figure 5 It is the sectional view of the inner support chuck of the utility model;

[0027] Figure 6 It is the perspective view of the inner support screw of the utility model;

[0028] Figure 7 It is the working schematic view of the utility model;

[0029] Figure 8 It is the connecting structure schematic view of the guide head and the steel pipe in the prior art.

[0030] Among them:

[0031] 1, pipe guide head; 101, first threaded hole; 102, second threaded hole; 2, jackscrew; 3, inner support chuck threaded sleeve; 4, inner support chuck; 401, opening; 402, tapered hole; 5, inner support screw; 501, square head; 502, tapered part; 6, clamping part; 7, fin group; 8, steel pipe; 9, wrench. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] As shown in the figure, a kind of guide head for fin pipe, including pipe guide head 1, inner support screw 5, jackscrew 2 and inner support assembly.

[0034] Among them, pipe guide head 1, first threaded hole 101 is set in the center of one end, and second threaded hole 102 is set in the radial position of pipe guide head 1 and is communicated with first threaded hole 101, in the example, two second threaded holes 102 are set on pipe guide head 1, and two second threaded holes 102 are evenly distributed around the center of pipe guide head 1;The other end of pipe guide head 1 away from first threaded hole 101 is in the form of sharp structure, which can be used as guide structure to enter fin group 7.

[0035] Inner support screw 5 is threadedly connected at first threaded hole 101 of pipe guide head 1, and tapered part 502 is formed at the outer diameter of outer end, in the example, square head 501 is formed at the outer diameter position of inner support screw 5, and the end of jackscrew 2 can abut against the plane of square head 501.

[0036] The top screw 2 is installed in the second threaded hole 102 and can abut against the inner support screw 5. In this example, the end of the top screw 2 is flat. When the top screw 2 is tightened, the end of the top screw 2 can abut against the square head 501 region of the inner support screw 5, so that the top screw 2, the inner support screw 5, and the pipe penetrating guide head 1 are connected and fixed to form an integral structure. When the pipe penetrating guide head 1 is rotated, the inner support screw 5 can be synchronously rotated.

[0037] The inner support assembly is sleeved outside the inner support screw 5 and is threadedly connected to one end of the inner support screw 5. A plurality of radial through openings 401 are formed in the circumferential direction of one end of the inner support assembly close to the conical portion 502 of the inner support screw 5. The outer end of the central hole of the inner support assembly is provided with a conical hole 402 matched with the conical portion 502.

[0038] The steel pipe 8 is sleeved outside the inner support assembly. In the tightened state of the top screw 2, the inner support screw 5 can be rotated by rotating the pipe penetrating guide head 1, so that the inner support screw 5 moves axially relative to the inner support assembly, and then the position of the conical hole 402 is driven by the conical portion 502 to expand outward, so that the inner support assembly tightly abuts against the inner wall of the steel pipe 8, and the stable connection between the guide head and the steel pipe 8 is realized.

[0039] Specifically, the inner support assembly comprises:

[0040] The inner support chuck 4 is made of spring steel and is sleeved outside the inner support screw 5. The conical hole 402 and the opening 401 are arranged at one end of the inner support chuck 4. In this example, the number of openings 401 at the end of the inner support chuck 4 is four, and the four openings 401 are uniformly distributed around the center of the inner support chuck 4. When the inner support screw 5 moves axially relative to the inner support chuck 4, the end of the inner support chuck 4 can be expanded outward under the action of the conical portion 502 and the conical hole 402.

[0041] The inner support chuck threaded sleeve 3 is fixedly connected with the inner support chuck 4 and is threadedly connected with the inner support screw 5. In this example, the inner support chuck threaded sleeve 3 is tightly connected with the inner support chuck 4 in an interference fit manner. In other embodiments, the two can also be connected by welding or threaded connection. The outer diameter of the inner support chuck threaded sleeve 3 is greater than the outer diameter of the inner support chuck 4, and is arranged to abut against one end of the inner support chuck threaded sleeve 3. The purpose of arranging the inner support chuck threaded sleeve 3 is to enable the inner support screw 5 to move along the axial direction of the inner support chuck threaded sleeve 3 during the driving of the inner support screw 5 by the guide head, and then the inner support screw 5 moves axially relative to the inner support chuck 4.

[0042] Specifically, the pipe penetrating guide head 1 and the outer wall of the inner support chuck threaded sleeve 3 are both provided with clamping portions 6 for facilitating clamping by the wrench 9, so as to facilitate the wrench 9 to act on the pipe penetrating guide head 1 and the inner support chuck threaded sleeve 3, thereby realizing the relative rotation of the pipe penetrating guide head 1 and the inner support chuck threaded sleeve 3.

[0043] When the guide head for fin pipe penetrating is used, the inner support screw 5 is first penetrated into the inner support chuck 4, the inner support screw 5 is threadedly connected with the inner support chuck threaded sleeve 3 and is rotated out from the inner support chuck threaded sleeve 3 at one end, the pipe penetrating guide head 1 is then threadedly connected at the end of the inner support screw 5, and the jackscrew 2 is tightened to lock the inner support screw 5, thereby completing the overall assembly of the guide head. Then, the steel pipe 8 is sleeved outside the inner support chuck 4, and during the sleeving process, the end of the steel pipe 8 abuts against the end of the inner support chuck threaded sleeve 3 to form a limiting effect. At this time, two wrenches 9 are clamped on the clamping portions 6 of the pipe penetrating guide head 1 and the inner support chuck threaded sleeve 3 respectively, one of the wrenches 9 is rotated to rotate the pipe penetrating guide head 1, and when the pipe penetrating guide head 1 rotates, the inner support screw 5 inside can be driven to rotate relative to the inner support chuck threaded sleeve 3, so that the inner support screw 5 moves axially relative to the inner support chuck 4, and under the cooperation of the tapered portion 502 of the inner support screw 5 and the tapered hole 402 of the inner support chuck 4, the inner support chuck 4 expands outward at one end, so that the inner support chuck 4 tightly abuts against the inner wall of the steel pipe 8, thereby realizing the fastening effect of the entire guide head and the steel pipe 8. At this time, the guide head can be used as a guide piece to shuttle into the fin group 7, thereby completing the pipe penetrating operation.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pilot head for fin tube threading, characterized in that, The utility model relates to a kind of steel pipe guiding head and inner support assembly, including: Pipe penetrating guide head, first threaded hole is opened in the center of one end, and second threaded hole is opened in the radial position of pipe penetrating guide head and is communicated with first threaded hole; Inner support screw, which is threadedly connected to the first threaded hole of the pipe penetrating guide head, and a tapered portion is formed at the outer diameter of the outer end; Top wire, which is installed in the second threaded hole and can abut on the inner support screw; Inner support assembly, which is sleeved on the outer part of the inner support screw and one end is threadedly matched with the inner support screw, a plurality of radial through openings are opened in the circumferential direction of the end close to the tapered portion of the inner support screw, and a tapered hole matched with the tapered portion is arranged at the outer end of the central hole of the inner support assembly; Wherein, the steel pipe is sleeved on the outer part of the inner support assembly, and the top wire is in the state of being screwed, and the inner support screw can be rotated by rotating the pipe penetrating guide head, so that the inner support screw moves axially relative to the inner support assembly, and then the tapered portion drives the tapered hole position to open outward, so that the inner support assembly is tightly attached to the inner wall of the steel pipe, and the stable connection of the guide head and the steel pipe is realized.

2. A guide head for fin tube piercing as claimed in claim 1, wherein, The inner support assembly includes: Inner support chuck, which is sleeved on the outer part of the inner support screw, and the tapered hole and the opening are arranged at one end of the inner support chuck; Inner support chuck threaded sleeve, which is fixedly connected with the inner support chuck and threadedly matched with the inner support screw.

3. A guide head for fin tube piercing as claimed in claim 2, wherein, The outer diameter of the inner support chuck threaded sleeve is larger than the outer diameter of the inner support chuck, and is arranged to abut the end of the steel pipe on one end of the inner support chuck threaded sleeve.

4. A guide head for fin tube piercing as defined in claim 2, wherein The number of openings at the end of the inner support chuck is four, and the four openings are evenly distributed around the center of the inner support chuck.

5. A guide head for fin tube piercing as defined in claim 2, wherein The outer wall position of the pipe penetrating guide head and the inner support chuck threaded sleeve is provided with a clamping part for facilitating the clamping of wrench.

6. A guide head for fin tube piercing as defined in claim 1, wherein The outer diameter position of the inner support screw is formed with a square head, and the end of the top wire can abut on the plane of the square head.

7. A guide head for fin tube piercing as defined in claim 1, wherein Two second threaded holes are opened on the pipe penetrating guide head, and the two second threaded holes are evenly distributed around the center of the pipe penetrating guide head.

8. A guide head for fin tube piercing as defined in claim 1, wherein The other end of the pipe penetrating guide head away from the first threaded hole is in a sharp structure.

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