Novel coiled tubing quick coupling device

Abstract

The utility model discloses a novel coiled tubing quick coupling device, which comprises a pair of oppositely arranged metal jackets, a ball head core tube and an external thread core tube are arranged between the metal jackets, and a connecting nut is arranged at the joint of the ball head core tube and the external thread core tube. The novel continuous pipe quick connector device has the following advantages that 1, the short-tooth Ekem thread structure is adopted, the thread height is low, the structure is compact, the tensile and shearing resistance is high, and meshing is not prone to occurring in the assembly process; the short-tooth Akeb threads are directly arranged on the connector, so that the welding or threaded connection procedure is reduced, and the cost is reduced; 2, the O-shaped ring, the spherical surface and the taper hole are adopted for double sealing, so that the sealing is reliable; and 3, the pitch of the short-tooth Akeb thread is 3-4 teeth per inch, the number of the threads is 2-3, and the short-tooth Akeb thread is fastened by hammering a connecting nut hammer lug, so that the operation is simple and quick.

Description

Technical Field

[0001] The utility model relates to a pipeline connection device, more specifically, to a novel continuous pipe quick connector device. Background Art

[0002] Continuous pipe joints are generally connected by ordinary triangular threads and sealed by flat gaskets. This type of joint has a slow connection speed and requires an extended special wrench to tighten. It is inconvenient to operate in the pipe trench and difficult to disassemble. At the same time, if the thread torque is too small, the flat gasket end face is not sealed tightly. If the torque is too large, the flat gasket will fail under pressure and lose its elasticity, and it cannot be reliably sealed, causing pipeline leakage. Utility Model Content

[0003] Based on this, it is necessary to provide a new type of continuous pipe quick connector device to address the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A novel coiled tubing quick connector device, characterized in that the novel coiled tubing quick connector device comprises a pair of metal outer sleeves arranged opposite to each other, a ball head core tube and an outer thread core tube are arranged between the metal outer sleeves, and a connecting nut is arranged at the joint between the ball head core tube and the outer thread core tube.

[0006] The metal jacket comprises a tubular jacket body, the end of which is provided with a jacket claw, the setting direction of which is perpendicular to the jacket body, and the inner wall of which is provided with a plurality of jacket tooth rings.

[0007] The ball head core tube comprises a tubular first core tube body and a tubular first core tube matching body, a plurality of first limit tooth rings are arranged on the outer wall of the first core tube body, an annular first core tube clamping groove is arranged on the outer wall of the first core tube matching body, a matching spherical surface, a locking boss and an R-shaped groove are arranged on the head of the first core tube matching body, an O-ring is arranged in the R-shaped groove,

[0008] The outer wire core tube comprises a tubular second core tube body and a penetrating second core tube matching body, a plurality of second limiting tooth rings are arranged on the outer wall of the second core tube body, an annular second core tube clamping groove is arranged on the outer wall of the second core tube matching body, a matching conical surface is arranged on the head of the second core tube matching body, the matching conical surface matches with the matching spherical surface, and a plurality of external thread sections are arranged on the outer wall of the second core tube matching body.

[0009] The connecting nut comprises a cylindrical nut body, the inner wall of the nut body is provided with a plurality of internal thread sections, the internal thread sections cooperate with the external thread sections, one end of the nut body is provided with an annular nut locking ring, the extension direction of the nut locking ring is toward the radial direction of the nut body, and the nut locking ring cooperates with the locking boss.

[0010] As a preferred embodiment of the utility model, three hammer ears are provided on the outer wall of the nut body.

[0011] As a preferred embodiment of the utility model, the internal thread section and the external thread section are both short pitch Acme threads.

[0012] As a preferred embodiment of the utility model, the pitch of the internal thread segment and the external thread segment is 3 to 4 threads per inch, and the number of threads of the internal thread segment and the external thread segment is 2 to 3.

[0013] As a preferred embodiment of the utility model, the outer sleeve tooth ring, the first position-limiting tooth ring and the second position-limiting tooth ring are all triangular teeth.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a novel coiled tubing quick connector device, which has the following advantages:

[0016] 1. The short pitch Akem thread structure is adopted, with low thread height, compact structure, strong tensile and shear resistance, and less prone to buckling during assembly. The short pitch Akem thread is directly set on the joint to reduce welding or thread connection processes and reduce costs;

[0017] 2. Adopt O-ring, spherical surface and conical hole for double sealing, which is reliable;

[0018] 3. The pitch of the internal thread section and the external thread section is 3 to 4 threads per inch, and the nuts are fastened by hammering the lugs, which is simple and quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of a novel continuous pipe quick connector device of the utility model;

[0021] Figure 2 for Figure 1 A detailed enlarged schematic diagram of the A area of ​​the new type of continuous pipe quick connector device;

[0022] Figure 3 for Figure 1 A detailed enlarged schematic diagram of the B area of ​​the new type of continuous pipe quick connector device;

[0023] Figure 4 for Figure 1 A detailed enlarged schematic diagram of the C area of ​​the new type of continuous pipe quick connector device;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the ball head core tube;

[0025] Figure 6 for Figure 1 A schematic diagram of the structure of the outer wire core tube;

[0026] The markings in the figure are as follows: 1. Metal jacket; 11. Jacket body; 111. Jacket tooth ring; 12. Jacket claw; 2. Ball head core tube; 21. First core tube body; 211. First limit tooth ring; 22. First core tube matching body; 221. Matching spherical surface; 222. Locking boss; 223. R-shaped groove; 224. First core tube clamping groove; 3. Connecting nut; 31. Nut body; 311. Internal thread section; 32. Nut locking ring; 4. O-ring; 5. External thread core tube; 51. Second core tube body; 511. Second limit tooth ring; 52. Second core tube matching body; 521. Matching cone surface; 522. Second core tube clamping groove. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0028] like Figures 1 to 4 As shown, the novel continuous pipe quick connector device comprises a pair of metal jackets 1 arranged opposite to each other, a ball core tube 2 and an outer wire core tube 5 are arranged between the metal jackets 1, and a connecting nut 3 is arranged at the joint between the ball core tube 2 and the outer wire core tube 5.

[0029] The metal jacket 1 comprises a tubular jacket body 11 , a jacket claw 12 is disposed at the end of the jacket body 11 , and the jacket claw 12 is disposed perpendicularly to the jacket body 11 . A plurality of jacket tooth rings 111 are disposed on the inner wall of the jacket body 11 .

[0030] like Figure 5As shown, the ball head core tube 2 includes a tubular first core tube body 21 and a tubular first core tube matching body 22, a plurality of first limiting tooth rings 211 are provided on the outer wall of the first core tube body 21, an annular first core tube clamping groove 224 is provided on the outer wall of the first core tube matching body 22, a mating spherical surface 221, a locking boss 222 and an R-shaped groove 223 are provided on the head of the first core tube matching body 22, and an O-ring 4 is provided in the R-shaped groove 223.

[0031] like Figure 6 As shown, the outer wire core tube 5 includes a tubular second core tube body 51 and a penetrating second core tube fitting body 52, a plurality of second limiting tooth rings 511 are provided on the outer wall of the second core tube body 51, a ring-shaped second core tube clamping groove 523 is provided on the outer wall of the second core tube fitting body 52, a matching conical surface 521 is provided at the head of the second core tube fitting body 52, and the matching conical surface 521 matches with the matching spherical surface 221, and a plurality of external thread sections 522 are provided on the outer wall of the second core tube fitting body 52.

[0032] The connecting nut 3 includes a cylindrical nut body 31, and a plurality of internal thread segments 311 are provided on the inner wall of the nut body 31. The internal thread segments 311 cooperate with the external thread segments 522. An annular nut locking ring 32 is provided at one end of the nut body 31. The extension direction of the nut locking ring 32 is toward the radial direction of the nut body 31, and the nut locking ring 32 cooperates with the locking boss 222.

[0033] It should be noted that both the internal thread section 311 and the external thread section 522 are short pitch Acme threads. It should be noted that the pitch of the internal thread section 311 and the external thread section 522 is 3 to 4 threads per inch, and the number of threads of the internal thread section 311 and the external thread section 522 is 2 to 3. Due to the small number of threads, the connection speed is fast and the disassembly is convenient.

[0034] The outer sleeve tooth ring 111, the first position-limiting tooth ring 211, and the second position-limiting tooth ring 511 are all triangular teeth.

[0035] In addition, three hammer ears 33 are provided on the outer wall of the nut body 31 to facilitate hammering and tightening.

[0036] The following is an explanation of the working method of the novel coiled tubing quick connector device, including the following steps:

[0037] Step S1, chamfering the inner surface of the continuous pipe 6 to be connected to make it consistent with the outer taper of the joint core pipe, and the outer surface chamfer is 5×45°;

[0038] Step S2, respectively putting two metal jackets 1 on the outer surfaces of the coiled tubes 6 to be connected;

[0039] Step S3, inserting the connecting nut 3 into the outer surface of the ball head core tube 2;

[0040] Step S4: When the joint needs to be expanded internally, insert the internal expansion device from the left end of the ball head core tube 2 assembly;

[0041] Step S5, inserting the assembly of step S4 into the inner hole of the continuous tube 6;

[0042] Step S6: When the joint does not need to be expanded, the assembly in S3 is directly inserted into the inner hole of the coiled tube 6.

[0043] Step S7, moving the metal outer sleeve 1 so that the longitudinal position of the outer sleeve claw 12 is consistent with the longitudinal center position of the first core tube groove 224 of the ball head core tube 2;

[0044] Step S8, when the joint internal expansion is required, start the internal expansion device to perform the joint internal expansion; when the joint internal expansion is not required, skip this step and proceed to the next step;

[0045] Step S9, setting the crimping amount of the tube crimping machine, and crimping in sections;

[0046] Step S10, check the diameter of each section after crimping, if there is a diameter rebound, reset the crimping parameters of the tube crimping machine;

[0047] Step S11, after passing the inspection, remove the continuous pipe joint from the pipe locking device;

[0048] Step S12: When the joint needs to be internally expanded, insert the internal expansion device from the right end of the outer wire core tube 5;

[0049] Step S13, inserting the assembly of step S12 into the inner hole of another continuous tube 6;

[0050] Step S14: When the joint does not need to be expanded internally, the outer wire core tube 5 is directly inserted into the inner hole of another continuous tube;

[0051] Step S15, moving the metal outer sleeve 1 so that the longitudinal position of the outer sleeve claw 12 is consistent with the longitudinal center position of the second core tube slot 523 of the outer wire core tube 5;

[0052] Step S16: when the joint internal expansion is required, start the internal expansion device to perform the joint internal expansion; when the joint internal expansion is not required, skip this step and proceed to the next step;

[0053] Step S17, setting the crimping amount of the tube crimping machine, and crimping in sections;

[0054] Step S18, check the diameter of each section after crimping, if there is a diameter rebound, reset the crimping parameters of the tube crimping machine;

[0055] Step S19: After passing the inspection, remove the continuous pipe joint from the pipe locking device;

[0056] Step S20, inserting an O-ring 4 into the R-shaped groove 223 on the outer surface of the ball head core tube 2;

[0057] Step S21, move the composite tube at the end of the outer wire core tube 5 so that its matching conical surface 521 is in contact with the matching spherical surface 221 of the ball head core tube 2;

[0058] Step S22, rotating the connecting nut 3 to tighten;

[0059] Step S23, observe the position of the connecting nut 3, and use a hand hammer to hit the hammer ear 33 of the nut to tighten it, and the joint installation is completed.

[0060] The new type of continuous pipe quick connector has the following advantages:

[0061] 1. The short pitch Akem thread structure is adopted, with low thread height, compact structure, strong tensile and shear resistance, and less prone to buckling during assembly. The short pitch Akem thread is directly set on the joint to reduce welding or thread connection processes and reduce costs;

[0062] 2. Adopt O-ring, spherical surface and conical hole for double sealing, which is reliable;

[0063] 3. The pitch of the internal thread section 311 and the external thread section 522 is 3 to 4 threads per inch, and the number of threads is 2 to 3. The nuts are fastened by hammering the lugs, which is simple and quick to operate.

[0064] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope defined in the claims.

Claims

1. A new type of continuous pipe quick connector device, characterized in that: The novel continuous pipe quick connector device comprises a pair of metal outer sleeves (1) arranged opposite to each other, a ball head core tube (2) and an outer thread core tube (5) are arranged between the metal outer sleeves (1), and a connecting nut (3) is arranged at the joint between the ball head core tube (2) and the outer thread core tube (5). The metal jacket (1) comprises a tubular jacket body (11), a jacket claw (12) is provided at the end of the jacket body (11), the jacket claw (12) is arranged in a direction perpendicular to the jacket body (11), and a plurality of jacket tooth rings (111) are provided on the inner wall of the jacket body (11). The ball head core tube (2) comprises a tubular first core tube body (21) and a tubular first core tube matching body (22); a plurality of first limit tooth rings (211) are provided on the outer wall of the first core tube body (21); an annular first core tube clamping groove (224) is provided on the outer wall of the first core tube matching body (22); a matching spherical surface (221), a locking boss (222) and an R-shaped groove (223) are provided on the head of the first core tube matching body (22); an O-ring (4) is provided in the R-shaped groove (223); The outer wire core tube (5) comprises a tubular second core tube body (51) and a penetrating second core tube fitting body (52); a plurality of second limiting tooth rings (511) are provided on the outer wall of the second core tube body (51); an annular second core tube clamping groove (523) is provided on the outer wall of the second core tube fitting body (52); a matching conical surface (521) is provided on the head of the second core tube fitting body (52); the matching conical surface (521) matches with the matching spherical surface (221); a plurality of external thread sections (522) are provided on the outer wall of the second core tube fitting body (52); The connecting nut (3) comprises a cylindrical nut body (31), the inner wall of the nut body (31) is provided with a plurality of internal thread segments (311), the internal thread segments (311) cooperate with the external thread segments (522), an annular nut locking ring (32) is provided at one end of the nut body (31), the extension direction of the nut locking ring (32) is toward the radial direction of the nut body (31), and the nut locking ring (32) cooperates with the locking boss (222).

2. The novel continuous pipe quick connector device according to claim 1 is characterized in that: Three hammer ears (33) are provided on the outer wall of the nut body (31).

3. The novel continuous pipe quick connector device according to claim 1 is characterized in that: The internal thread section (311) and the external thread section (522) are both short pitch Acme threads.

4. The novel continuous pipe quick connector device according to claim 3 is characterized in that: The pitch of the internal thread section (311) and the external thread section (522) is 3 to 4 threads per inch, and the number of threads of the internal thread section (311) and the external thread section (522) is 2 to 3.

5. The novel continuous pipe quick connector device according to claim 1 is characterized in that: The outer sleeve tooth ring (111), the first position-limiting tooth ring (211), and the second position-limiting tooth ring (511) are all triangular teeth.

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