CN209977478U

CN209977478U - Pipeline joint assembly

Info

Publication number: CN209977478U
Application number: CN201920169417.9U
Authority: CN
Inventors: 甘霞
Original assignee: Guangzhou Shipyard International Co Ltd
Current assignee: Guangzhou dragon Pipe Industry Co.,Ltd.
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-01-21
Anticipated expiration: 2029-01-30

Abstract

The utility model discloses a pipeline joint subassembly, including the first joint, cap nut and second joint, the first end of first joint and the first end butt that the second connects, be provided with the sealing washer between the two, cap nut revolves to twist outside first joint and second joint and shelters from the position that first joint and second articulate, run through in the first joint and set up the first through-hole that supplies first pipe fitting to pass through, run through in the second joint and set up the second through-hole that supplies the second pipe fitting to pass through, the second end of first joint and the outer wall welding of first pipe fitting, the second end of second joint and the outer wall welding of second pipe fitting. Contrast prior art, the utility model discloses a pipeline joint subassembly simple structure, the assembly is simple and convenient, and sealed effectual.

Description

Pipeline joint assembly

Technical Field

The utility model relates to a pipe connection technical field especially relates to a pipe joint subassembly.

Background

The existing high-pressure threaded joint is complex to machine, the use requirement of a helium nitrogen oxygen system cannot be met, the technical requirement of the installation of the joint on site construction personnel is high, the sealing effect of the joint is not ideal, the recommended gasket form is not favorable for sealing, the joint is repeatedly disassembled and assembled to cause serious tooth burning, the construction difficulty on site is increased, and the labor efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a pipeline joint subassembly, its simple structure, the assembly is simple, and is sealed effectual.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a pipeline joint subassembly, including first joint, cap nut and second joint, the first end of first joint with the first end butt of second joint is provided with the sealing washer between the two, cap nut revolves to twist first joint with the second connects the outer and shelters from first joint with the position that the second articulate, run through in the first joint and set up the first through-hole that supplies first pipe fitting to pass through, run through in the second joint and set up the second through-hole that supplies the second pipe fitting to pass through, the second end of first joint with the outer wall welding of first pipe fitting, the second end of second joint with the outer wall welding of second pipe fitting.

As a preferable scheme of the pipe joint assembly, a first step is annularly arranged on the outer periphery of the first joint, an external thread is arranged on the outer periphery of the second joint, the outer nut comprises a nut body, a step hole is formed in the nut body in a penetrating manner, the step hole comprises a first hole and a second hole which are communicated with each other, the diameter of the first hole is smaller than that of the second hole, a second step is formed between the first hole and the second hole, an internal thread is arranged in the second hole, when the outer nut is screwed on the first joint and the second joint, the first end of the first joint penetrates through the first hole and is abutted against the first step and the second step, and the first end of the second joint is inserted into the second hole and is screwed with the internal thread in the outer nut through the external thread.

As a preferable scheme of the pipeline joint assembly, the second joint comprises a joint body and a nut fixedly arranged at one end of the joint body, the joint body is screwed in the second hole, and the nut is exposed out of the second hole.

As a preferable mode of the pipe joint assembly, the first through hole includes a third hole and a fourth hole communicating with the third hole, the fourth hole is adjacent to the second joint, a diameter of the third hole is larger than a diameter of the fourth hole, a third step is formed between the third hole and the fourth hole, and an end of the first pipe abuts against the third step.

As a preferred embodiment of the pipe joint assembly, the sealing ring comprises an annular sealing body, the cross section of which is arc-shaped.

As a preferable scheme of the pipeline joint assembly, a groove is formed on one side of the sealing body, a protrusion is formed on the other side of the sealing body, one side of the sealing body, which is provided with the groove, faces the first joint, and the side, which is provided with the protrusion, of the sealing body is tightly attached to the end face of the first end of the second joint.

As a preferable scheme of the pipeline joint assembly, a circle of mounting groove is annularly formed at the first end of the first joint, and the sealing ring is arranged in the mounting groove and partially protrudes out of the mounting groove to be abutted against the end face of the first end of the second joint.

As a preferable mode of the pipe joint assembly, the notch of the groove of the sealing body faces the bottom of the mounting groove.

As a preferable scheme of the pipeline joint assembly, the material of the first joint is consistent with that of the first pipe fitting, and the material of the second joint is consistent with that of the second pipe fitting.

Preferably, the first fitting, the second fitting and the outer nut are all made of HMn58-2 wrought manganese brass.

The utility model discloses beneficial effect does: through the one end with first joint and the outer wall welding of first pipe fitting, the one end that the second connects and the outer wall welding of second pipe fitting, rethread overcoat nut threaded connection first joint and second connect, and set up the sealing washer between two joints, greatly increase the leakproofness between first pipe fitting and the second pipe fitting, also satisfy the reliability that pipe fitting and pipeline joint subassembly are connected simultaneously, and overcoat nut can effectively prevent that the sealing washer from taking place phenomenons such as dislocation, prevent that the sealing washer is sealed to become invalid, the requirement to manual construction skill has been reduced. Contrast prior art, the utility model discloses a pipeline joint subassembly simple structure, the assembly is simple and convenient, and sealed effectual.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic partial sectional view of a pipeline joint assembly according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a first joint in accordance with an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a cap nut according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of a seal ring according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of a second joint in accordance with an embodiment of the present invention.

In the figure:

1. a first joint; 11. a first step; 12. a first through hole; 121. a third aperture; 122. a fourth aperture; 13. a third step; 14. mounting grooves;

2. a nut is sleeved; 21. a nut body; 22. a stepped bore; 221. a first hole; 222. a second hole; 23. a second step; 24. an internal thread;

3. a second joint; 31. a second through hole; 32. an external thread; 33. a connector body; 34. a nut;

4. a seal ring; 41. a seal body; 42. a groove; 43. and (4) protruding.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 5, the utility model discloses a pipeline joint assembly, including first joint 1, cap nut 2 and second joint 3, the first end of first joint 1 with the first end butt that the second connects 3 is provided with sealing washer 4 between the two, cap nut 2 revolves soon first joint 1 with the second connects 3 outer and shelters from first joint 1 with the position that the second connects 3 to be connected, run through in the first joint 1 and offer the first through-hole 12 that supplies first pipe fitting to pass through, run through in the second joint 3 and offer the second through-hole 31 that supplies the second pipe fitting to pass through, the second end of first joint 1 with the outer wall welding of first pipe fitting, the second end of second joint 3 with the outer wall welding of second pipe fitting. Through the one end with first joint 1 and the outer wall welding of first pipe fitting, the second connects the one end of 3 and the outer wall welding of second pipe fitting, rethread 2 threaded connection first joints 1 and second of overcoat nut connect 3, and set up sealing washer 4 between two joints, greatly increase the leakproofness between first pipe fitting and the second pipe fitting, also satisfy the reliability that pipe fitting and pipeline joint subassembly are connected simultaneously, and overcoat nut 2 can effectively prevent that sealing washer 4 from taking place phenomenons such as dislocation, prevent that sealing washer 4 from sealing inefficacy, the requirement to manual construction skill has been reduced. Contrast prior art, the utility model discloses a pipeline joint subassembly simple structure, the assembly is simple and convenient, and sealed effectual.

In one embodiment, the outer circumference of the first joint 1 is provided with a first step 11, the outer circumference of the second joint 3 is provided with an external thread 32, the outer sleeve nut 2 comprises a nut body 21, a step hole 22 is arranged in the nut body 21 in a penetrating way, the stepped hole 22 includes a first hole 221 and a second hole 222 which are disposed in communication, the diameter of the first hole 221 is smaller than the diameter of the second hole 222, a second step 23 is formed between the first hole 221 and the second hole 222, an internal thread 24 is provided in the second hole 222, when the outer nut 2 is screwed to the first connector 1 and the second connector 3, the first end of the first connector 1 penetrates the first hole 221, and the first step 11 abuts against the second step 23, and the first end of the second joint 3 is inserted into the second hole 222 and screwed with the internal thread 24 in the outer nut 2 through the external thread 32. The outer sleeve nut 2 of the structure is limited by the step at one end, the other end is fixed by threads, when the first joint 1 and the second joint 3 are fixed, the outer sleeve nut 2 is firstly sleeved outside the first joint 1, then the first pipe fitting is inserted into the first joint 1, the second end of the first pipe fitting and the second end of the first joint 1 are welded, then the second pipe fitting is inserted into the second joint 3, the second end of the second pipe fitting and the second joint 3 are welded, then the sealing ring 4 is installed between the first joint 1 and the second joint 3, finally the outer sleeve nut 2 is screwed to the second joint 3, and the outer sleeve nut 2 continuously pulls the first joint 1 to be close to the second joint 3 in the screwing process until the first end of the first joint 1 and the first end of the second joint 3 abut against the sealing ring 4.

In one embodiment, the second connector 3 includes a connector body 33 and a nut 34 fixedly disposed at one end of the connector body 33, the connector body 33 is screwed into the second hole 222, and the nut 34 is exposed outside the second hole 222. The nut 34 is arranged at one end, exposed out of the outer sleeve nut 2, of the second connector 3, so that the second connector 3 is conveniently screwed with the outer sleeve nut 2, and the operation difficulty is reduced.

In an embodiment, the first through hole 12 comprises a third hole 121 and a fourth hole 122 communicating with the third hole 121, the fourth hole 122 is adjacent to the second joint 3, the third hole 121 has a diameter larger than that of the fourth hole 122, a third step 13 is formed between the third hole 121 and the fourth hole 122, and the end of the first pipe member abuts against the third step 13. By providing the third step 13 in the first joint 1, the position of insertion of the first pipe element into the first joint 1 can be defined.

In one embodiment, the sealing ring 4 includes an annular sealing body 41, and the cross section of the sealing body 41 is arc-shaped. The sealing ring 4 with the arc-shaped section has more contraction spaces and better sealing effect, and is more suitable for sealing the joint of the high-pressure system joint.

In this embodiment, one side of the sealing body 41 forms a groove 42, and the other side forms a protrusion 43, the side of the sealing body 41 provided with the groove 42 faces the first joint 1, and the side of the sealing body 41 provided with the protrusion 43 abuts against the end surface of the first end of the second joint 3. This structure makes the section of the sealing body 41 be an arc plate structure, the concave side is a groove 42 facing the first joint 1, and the convex side is a protrusion 43 facing the second joint 3.

In one embodiment, the first end of the first joint 1 is annularly provided with a circle of mounting groove 14, and the sealing ring 4 is arranged in the mounting groove 14 and partially protrudes out of the mounting groove 14 to abut against the end surface of the first end of the second joint 3. Through setting up mounting groove 14, can carry out position to sealing washer 4 and prescribe a limit to, prevent effectively that sealing washer 4 from taking place the position and removing, guarantee that sealed effect does not become invalid.

In this embodiment, the notch of the groove 42 of the sealing body 41 faces the groove bottom of the mounting groove 14.

In one embodiment, the material of the first joint 1 is the same as that of the first pipe, and the material of the second joint 3 is the same as that of the second pipe. The material that connects is unanimous with the material of pipe fitting and is convenient for select welding material, and the stress of the welding seam department after the welding is littleer, and the quality is better, and the utility model discloses a pipeline joint Assembly can realize the connection of different materials.

In this embodiment, the first joint 1, the second joint 3, and the outer nut 2 are all made of HMn58-2 wrought manganese brass. The HMn58-2 manganese brass is a metal material with high corrosion resistance, has high corrosion resistance in seawater, superheated steam and chloride, and is more suitable for high-pressure oil, water and gas systems which adopt copper pipes, such as a helium-nitrogen-oxygen high-pressure system, an oxyacetylene system and the like on a ship.

In this embodiment, the working pressure of the line joint assembly is 20MPa or less.

The utility model discloses a pipeline joint subassembly processing is simple, simple to operate, leakproofness are good, the security is high, and the installation technical ability requirement to the workman is not high, and the use of pipeline joint subassembly has improved work efficiency, has reduced manufacturing cost, provides more effective assurance for the air supply system of boats and ships rescue lifesaving operation in a dive, satisfies boats and ships copper pipe high-pressure system's demand completely.

In the description herein, references to the description of "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

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

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A pipeline joint assembly is characterized by comprising a first joint, a sleeve nut and a second joint, wherein the first end of the first joint is abutted against the first end of the second joint, a sealing ring is arranged between the first joint and the second joint, the sleeve nut is screwed outside the first joint and the second joint and shields the position where the first joint is connected with the second joint, a first through hole for a first pipe fitting to pass through is formed in the first joint in a penetrating manner, a second through hole for a second pipe fitting to pass through is formed in the second joint in a penetrating manner, the second end of the first joint is welded with the outer wall of the first pipe fitting, and the second end of the second joint is welded with the outer wall of the second pipe fitting;

the outer periphery of the first joint is annularly provided with a first step, the outer periphery of the second joint is provided with an external thread, the outer nut comprises a nut body, a step hole penetrates through the nut body, the step hole comprises a first hole and a second hole which are communicated with each other, the diameter of the first hole is smaller than that of the second hole, a second step is formed between the first hole and the second hole, an internal thread is arranged in the second hole, when the outer nut is screwed on the first joint and the second joint, the first end of the first joint penetrates through the first hole, the first step is abutted against the second step, and the first end of the second joint is inserted into the second hole and is screwed with the internal thread in the outer nut through the external thread;

the second connector comprises a connector body and a nut fixedly arranged at one end of the connector body, the connector body is screwed in the second hole, and the nut is exposed outside the second hole.

2. The line coupling assembly of claim 1, wherein the first through bore includes a third bore and a fourth bore in communication with the third bore, the fourth bore being adjacent to the second coupling, the third bore having a diameter greater than a diameter of the fourth bore, a third step being formed between the third bore and the fourth bore, the end of the first tubular abutting the third step.

3. The pipe coupling assembly of any one of claims 1 or 2, wherein said seal ring comprises an annular seal body having an arcuate cross-section.

4. The pipe coupling assembly of claim 3, wherein said sealing body defines a recess on one side and a protrusion on an opposite side, said sealing body defines said recess on a side facing said first coupling, and said sealing body defines said protrusion on a side abutting an end surface of said first end of said second coupling.

5. The line coupling assembly of claim 4, wherein the first end of the first coupling is annularly formed with a mounting groove, and the sealing ring is disposed within the mounting groove and partially protrudes from the mounting groove to abut the end surface of the first end of the second coupling.

6. The line coupling assembly of claim 5, wherein the notch of the groove of the seal body faces the floor of the mounting groove.

7. The line coupling assembly of any one of claims 1 or 2, wherein the first coupling is formed of a material consistent with the material of the first pipe element, and the second coupling is formed of a material consistent with the material of the second pipe element.

8. The pipe fitting assembly of claim 7 wherein said first fitting, said second fitting and said outer nut are each made of HMn58-2 wrought manganese brass.