CN212804649U - Novel composite pipe fitting structure - Google Patents

Abstract

The utility model provides a novel compound pipe fitting structure, including first core pipe, first core pipe one end threaded connection has first sleeve, first telescopic one end is kept away from to first core pipe is equipped with second core pipe, the one end threaded connection that first core pipe was kept away from to second core pipe has the second sleeve, first core pipe is connected with second core pipe through keeping away from first telescopic one end, it sets up the draw-in groove that a plurality of is used for cooperating the curved spanner of crescent moon to be annular equidistance on the lock cap annular side, be equipped with the tetrafluoro gasket who plays sealed effect between first core pipe and the second core pipe, compared with the prior art, the utility model discloses following beneficial effect has: adopt the curved spanner of crescent to screw up, convenient operation, light and handy adopt the screw thread form to connect, than the effectual intensity and the reliability of having guaranteed the connection of preceding welding mode to use torque wrench to screw up and guaranteed the uniformity of product.

Description

Novel composite pipe fitting structure

Technical Field

The utility model relates to a novel compound pipe fitting structure belongs to the compound union coupling field of plastics.

Background

At present, plastic composite pipes used in the field of oil fields are all medium-high pressure pipes, and are all connected by metal joints. Because the oil field pipe construction site is basically in a remote deep mountain and the terrain is very complex, the operation convenience is the primary consideration. In the prior art, the pipe wrench is adopted to screw the locking cap tightly to connect the pipe fittings between the pipes during the construction of the composite pipe fittings with small specification and model, but the operation of connecting the pipe fittings in the groove by using the pipe wrench is very inconvenient; when the pipe fitting is used for large-diameter pipes, the pipe fitting has overlarge outer diameter, but the use size of the pipe wrench is limited, and the pipe wrench cannot be used any more. Meanwhile, the core pipe and the sleeve of the metal pipe fitting used in the market are mostly connected in a welding mode, the strength of the connection in the mode cannot be checked, whether the welded seam is effectively connected with the core pipe and the sleeve depends on the welding technical level of a welder master, and the manufactured product cannot guarantee the consistency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel compound pipe fitting structure to solve the problem that proposes in the above-mentioned background art, the utility model discloses a crescent spanner screws up, and convenient operation, light and handy adopt the screw thread form to connect, than the effectual intensity and the reliability of connecting of having guaranteed of preceding welding mode to use torque wrench to screw up the uniformity of having guaranteed the product.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a novel compound pipe fitting structure, includes first core pipe, first core pipe one end threaded connection has first sleeve, first telescopic one end is kept away from to first core pipe is equipped with second core pipe, the one end threaded connection that first core pipe was kept away from to the second core pipe has the second sleeve, first core pipe is connected with second core pipe through keeping away from first telescopic one end, it sets up the draw-in groove that a plurality of is used for cooperating the curved spanner of crescent to be annular equidistance on the lock cap annular side, be equipped with the tetrafluoro gasket that plays sealed effect between first core pipe and the second core pipe.

Further, first core pipe includes the first external screw thread pipe with first sleeve threaded connection, first external screw thread pipe one end is fixed with and lock nut threaded connection has screw portion, screw portion and first external screw thread pipe be the integrated into one piece structure.

Furthermore, a plurality of first keyways used for matching with a crescent wrench are arranged on the outer surface of one end, close to the first outer threaded pipe, of the threaded part at equal intervals in an annular mode.

Furthermore, an annular groove is formed in one surface, deviating from the first outer threaded pipe, of the threaded portion, and the tetrafluoro gasket is arranged in the annular groove.

Further, the second core pipe includes the second external thread pipe with second sleeve threaded connection, second external thread pipe one end is fixed with the spacing portion that is used for restricting the lock nut position, the one end external fixation who keeps away from the second external thread pipe of spacing portion has a spacing ring, lock nut internal surface one side edge is fixed with the retaining ring with spacing ring matched with, the retaining ring is the integrated into one piece structure with the lock nut, the spacing ring is the integrated into one piece structure with spacing portion, spacing portion and second external thread pipe are the integrated into one piece structure.

Furthermore, the outer surface of one end of the limiting part close to the second external thread is annular and provided with a plurality of second key grooves which are used for matching with the crescent spanner at equal intervals.

The utility model has the advantages that: 1. the connection position of the core pipe and the sleeve is connected by adopting a threaded structure instead of the traditional welding mode of the pipe fitting, the mode can perfectly avoid the risk and the problem existing in the welding mode, and meanwhile, the threaded structure can be screwed up by a torque wrench for torque control, so that the consistency and the strength reliability of the product pipe fitting are ensured.

2. The locking cap is provided with a plurality of clamping grooves matched with the half-tooth bent handles, and the crescent bent wrench is short and small, so that the operation is very convenient even in a groove of an oilfield pipe construction site, and the pipe fitting of the large-caliber pipe is also applicable.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a cross-sectional view of a novel composite pipe fitting structure of the present invention;

fig. 2 is an exploded view of the novel composite pipe fitting structure of the present invention;

fig. 3 is a cross-sectional view of a locking cap in a novel composite pipe fitting structure of the present invention;

in the figure: 1-a first core pipe, 2-a first sleeve, 3-a clamping groove, 4-a locking cap, 5-a second sleeve, 6-a second core pipe, 7-a tetrafluoro gasket, 11-a first external thread pipe, 12-a first key groove, 13-a thread part, 41-a retainer ring, 61-a second external thread pipe, 62-a second key groove, 63-a limiting part and 64-a limiting ring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a novel compound pipe fitting structure, including first core pipe 1, 1 one end threaded connection of first core pipe has first sleeve 2, the one end that first sleeve 2 was kept away from to first core pipe 1 is equipped with second core pipe 6, the one end threaded connection that first core pipe 1 was kept away from to second core pipe 6 has second sleeve 5, adopt the welded mode that the threaded structure replaced the pipe fitting in the past to connect, the risk and the problem that the welded mode exists are fallen in the evading that this mode can be perfect, avoid promptly and guarantee the degree of depth and the joint strength of welding seam by welding master's welding technique level when adopting the welding, the unable uniformity of guaranteeing the product of this connected mode just also has the risk that the pipe fitting rosin joint can't be detected out and lead to quality problems, adopt the available moment of torsion spanner of threaded structure to screw up simultaneously and carry out torque control, the uniformity and the intensity reliability of product pipe.

The first core tube 1 is connected to the second core tube 6 through the end away from the first sleeve 2 by the locking cap 4, and the locking cap 4 functions to connect the first core tube 1 and the second core tube 6.

The annular side surface of the lock cap 4 is provided with a plurality of clamping grooves 3 which are used for matching with the crescent wrench at equal intervals, the locking grooves 3 which are matched with the half-tooth bent handle are processed on the lock cap 4, the size of each clamping groove 3 refers to the specification of the groove size in GB/T812 + 1988 round nut standard, so that the specification of the crescent wrench on the current market is universal, the crescent wrench is short and small, the operation is very convenient even in a groove of an oilfield pipe construction site, and the pipe fitting of a large-caliber pipe is also applicable.

A PTFE gasket 7 for sealing is arranged between the first core tube 1 and the second core tube 6, and the PTFE gasket 7 is arranged between the first core tube 1 and the second core tube 6, so that the sealing property between the first core tube 1 and the second core tube 6 is improved.

The first core pipe 1 comprises a first external threaded pipe 11 in threaded connection with the first sleeve 2, a threaded part 13 in threaded connection with the lock cap 4 is fixed at one end of the first external threaded pipe 11, the threaded part 13 and the first external threaded pipe 11 are of an integrally formed structure, after the first external threaded pipe 11 is screwed into the first sleeve 2, the lock cap 4 sleeved on the second core pipe 6 is in threaded connection with the threaded part 13, and fixed connection of the first core pipe 1 and the second core pipe 6 is completed.

The outer surface of one end of the thread part 13 close to the first outer thread pipe 11 is provided with a plurality of first key grooves 12 which are used for matching with a crescent spanner at an annular equal interval, the thread part 13 is provided with the first key grooves 12, and the first core pipe 1 is convenient to twist by using the crescent spanner.

Screw thread portion 13 deviates from the one side of first external screw thread pipe 11 and has seted up the ring channel, and tetrafluoro gasket 7 sets up in the ring channel, and the ring channel provides installation space for tetrafluoro gasket 7.

The second core tube 6 comprises a second external threaded tube 61 in threaded connection with the second sleeve 5, one end of the second external threaded tube 61 is fixed with a limiting part 63 used for limiting the position of the lock cap 4, a limiting ring 64 is fixed on the outer surface of one end, far away from the second external threaded tube 61, of the limiting part 63, a retaining ring 41 matched with the limiting ring 64 is fixed on the edge of one side of the inner surface of the lock cap 4, the second sleeve 5 is screwed on the second external threaded tube 61 after the lock cap 4 is sleeved on the limiting part 63, and then the lock cap 4 is limited on the limiting part 63 under the combined action of the limiting ring 64, the retaining ring 41 and the second sleeve 5.

The retainer ring 41 and the lock cap 4 are of an integrally formed structure, the limiting ring 64 and the limiting part 63 are of an integrally formed structure, and the limiting part 63 and the second external threaded pipe 61 are of an integrally formed structure, so that the integrally formed structure is convenient to produce and process.

The limiting part 63 is provided with a plurality of second key grooves 62 which are used for being matched with a crescent spanner at the same annular distance from the outer surface of one end of the second external thread, the limiting part 63 is provided with the second key grooves 62, and the second core pipe 6 can be conveniently screwed by the crescent spanner.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a novel compound pipe fitting structure, includes first core pipe (1), its characterized in that: first core pipe (1) one end threaded connection has first sleeve (2), the one end that first sleeve (2) were kept away from in first core pipe (1) is equipped with second core pipe (6), the one end threaded connection that first core pipe (1) was kept away from in second core pipe (6) has second sleeve (5), first core pipe (1) is connected with second core pipe (6) through lock cap (4) through the one end of keeping away from first sleeve (2), be annular equidistance on lock cap (4) the annular side and offer draw-in groove (3) that a plurality of is used for cooperating the curved spanner of crescent moon, be equipped with tetrafluoro gasket (7) that play sealed effect between first core pipe (1) and second core pipe (6).

2. The novel composite pipe fitting structure of claim 1, wherein: first core pipe (1) include with first sleeve (2) threaded connection's first external screw thread pipe (11), first external screw thread pipe (11) one end is fixed with and lock cap (4) threaded connection has screw portion (13), screw portion (13) and first external screw thread pipe (11) are the integrated into one piece structure.

3. The novel composite pipe fitting structure of claim 2, wherein: the outer surface of one end of the threaded part (13) close to the first outer threaded pipe (11) is annular and equidistant, and is provided with a plurality of first key grooves (12) used for matching with a crescent wrench.

4. The novel composite pipe fitting structure of claim 2, wherein: the annular groove is opened on the face of screw thread portion (13) deviating from first external screw thread pipe (11), tetrafluoro gasket (7) set up in the annular groove.

5. The novel composite pipe fitting structure of claim 1, wherein: second core pipe (6) include with second sleeve (5) threaded connection's second external thread pipe (61), second external thread pipe (61) one end is fixed with spacing portion (63) that are used for restricting lock cap (4) position, the one end external fixation who keeps away from second external thread pipe (61) in spacing portion (63) has spacing collar (64), lock cap (4) internal surface one side edge is fixed with retaining ring (41) with spacing collar (64) matched with, retaining ring (41) and lock cap (4) are the integrated into one piece structure, spacing collar (64) and spacing portion (63) are the integrated into one piece structure, spacing portion (63) and second external thread pipe (61) are the integrated into one piece structure.

6. The novel composite pipe fitting structure of claim 5, wherein: the limiting part (63) is provided with a plurality of second key grooves (62) which are used for being matched with a crescent wrench at the same annular distance from the outer surface of one end of the second external thread.

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