CN205207975U - Internal diameter couplings such as detachable - Google Patents

Abstract

The utility model discloses a detachable equal-inner-diameter pipe joint, which comprises a first sleeve socketed on the pipe end of the first connecting pipe and a second sleeve socketed on the pipe end of the second connecting pipe. The port is provided with multiple annular grooves, the port of the second sleeve is provided with multiple annular grooves, the first sleeve and the second sleeve are respectively provided with annular protrusions, and the outside of the first sleeve is The first threaded sleeve is sleeved, and the second threaded sleeve is sleeved outside the second sleeve. The first threaded sleeve and the second threaded sleeve are connected by threads. The annular protrusion of the first sleeve and the second An annular sealing ring is installed between the annular protrusions of the casing, and the annular sealing ring seals against the annular protrusion of the first sleeve and the annular protrusion of the second sleeve.

Description

A detachable equal inner diameter pipe joint

technical field

The utility model is a detachable equal inner diameter pipe joint, which is widely used in the field of gas and liquid delivery pipelines in the fields of aerospace, transportation, petrochemical industry, electric power system and the like.

Background technique

Existing pipe joint structures, such as CN202100849U disclosed "connection structure of spinning pipe fittings", its structure is composed of pipe joints, pipes and connecting nuts, the outer end inner ring of the pipe joints is provided with internal threads, and the connecting nuts The outer ring of the pipe is provided with an external thread matching the internal thread, the connecting nut is screwed into the pipe joint, the pipe is inserted into the pipe joint through the connecting nut, and the outer ring of the end of the pipe is provided with an annular protrusion. The end of the connecting nut is against the annular protrusion, and an annular groove is provided on the outer side of the annular protrusion, an O-shaped sealing ring is arranged in the annular groove, and a first annular slope is arranged on the inner ring of the pipe joint, O The type sealing ring is against the first annular slope.

The O-shaped sealing ring structure it adopts makes the inner diameter of the connecting pipe have a constricted part, which leads to turbulent flow when the entire connecting pipe joint is in use.

Another example is CN201152409Y disclosed "Metal Skeleton Reinforced Plastics Composite Pipe Network", its specific design scheme includes: there is an inner casing with a boss, and at least the outer circumference of the inner casing is connected with the plastic at the end of the metal skeleton reinforced plastic composite pipe. The inner layer is melted and connected, the pipe connector is melted and connected with the plastic outer layer at the end of the metal skeleton reinforced plastic composite pipe and the outer peripheral surface of the boss of the inner layer sleeve, and the pipe connector and the inner layer sleeve are melted and connected as one to form a Ring-shaped U-shaped socket, the ring-shaped U-shaped socket completely melts and covers the plastic outer layer and plastic inner layer of the end of the metal skeleton reinforced plastic composite pipe and the end surface of the pipe, and the composite pipe is formed by connecting the composite pipe with the pipe connector Pipe Network.

The problem with this technical solution is that after the inner sleeve (reference number 1) is connected to the pipe joints at both ends, the inner diameter of the inner sleeve is smaller than the inner diameter of the pipe joint, forming a sudden contraction of the inner diameter of the pipe, so that after the pipe is connected The inner diameter is discontinuous, which can easily cause turbulent flow, increase the pressure inside the pipeline, bring higher requirements to the sealing and pressure bearing capacity of the pipeline, and easily cause pipeline burst and leakage.

Another example is the "pipe joint" disclosed in CN101248305B, its specific design scheme includes: a clamping part with a sharp pipe pressing-in edge, and the pressing-in edge provides a seal between the pipe clamping part and the pipe. Another such fitting includes a pipe gripping member having a fitting body press-in edge that provides a seal between the pipe gripping member and the fitting body.

The problem with this technical solution is that the structure of the pipe interface is complicated, and there are also sudden contraction parts in the inner pipe diameter, so there are also problems of turbulent flow, pressure bearing and sealing.

Therefore, based on the above content, it is the technical problem to be solved by the utility model to design a connecting conduit with good sealing structure and small pipe wall resistance.

Utility model content

The purpose of this utility model is to provide a detachable equal inner diameter pipe joint, which adopts a detachable connection method, so that the connecting pipe structure is easy to install, disassemble and replace, and brings convenience to repair and maintenance.

The purpose of the utility model is realized through the following technical solutions:

A detachable pipe joint of equal inner diameter, which is applied to the connecting part of a first connecting pipe and a second connecting pipe butted against each other, including a first sleeve sleeved on the end of the first connecting pipe and a first sleeve sleeved on the second connecting pipe The second sleeve at the pipe end, the port of the first sleeve is provided with multiple annular grooves, the port of the second sleeve is provided with multiple annular grooves, the first sleeve and the second Ring-shaped protrusions are respectively provided on the outside of the casing, a first threaded sleeve is sleeved on the outside of the first sleeve, a second threaded sleeve is sleeved on the outside of the second sleeve, and the first threaded sleeve and the The second threaded sleeve is connected by thread, and an annular sealing ring is installed between the annular protrusion of the first sleeve and the annular protrusion of the second sleeve, and the annular sealing ring of the first sleeve is A sealed connection is formed between the protrusion and the annular protrusion of the second sleeve.

The annular sealing ring is located inside the second threaded sleeve, and the annular protrusions of the first sleeve and the second sleeve adopt elastic components, so that the first sleeve and the second sleeve can be ring-shaped The sealing ring is compressed.

The first threaded sleeve has internal threads, and the second threaded sleeve has external threads, so that the two threaded sleeves can be connected by threads.

The first sleeve and the first connecting pipe are formed through a spin-sealed connection, and the second sleeve and the second connecting pipe are formed through a spin-sealed connection.

Preferably, the first threaded sleeve and the first bushing are connected in a rotating and sliding manner, so that the first threaded bushing does not drive the first bushing to rotate together during rotation.

Preferably, the second threaded sleeve and the second sleeve are connected by a rotating and sliding connection, so that the second threaded sleeve does not drive the second sleeve to rotate together during rotation.

A detachable pipe joint of equal inner diameter described in the utility model adopts the method of spinning to connect the casing and the connecting pipe. After the two connecting pipes are connected, the inner wall between the connecting pipes is continuous, and there will be no The sudden increase or drop of the inner diameter makes the fluid flow unsmooth, and realizes the detachable connection between the two connecting pipes.

Description of drawings

Below according to accompanying drawing and embodiment the utility model is described in further detail

Fig. 1 is the structural representation of the equal inner diameter pipe joint of the present utility model;

Wherein: 1-the first connecting pipe, 11-the first casing, 12-the first threaded sleeve, 2-the second connecting pipe, 21-the second casing, 22-the second threaded sleeve, 3-annular groove, 4-annular protrusion, 5-annular sealing ring.

detailed description

The preferred embodiments of the present utility model are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

As shown in Figure 1, a detachable equal-inner diameter pipe joint described in the embodiment of the present invention is applied to the connecting parts of the first connecting pipe 1 and the second connecting pipe 2 that are docked with each other, including sleeves on the first connecting pipe The first sleeve 11 at the pipe end of the pipe 1 and the second sleeve 21 sleeved at the pipe end of the second connecting pipe 2, the port of the first sleeve 11 is provided with multiple annular grooves, the second The port of the casing 21 is provided with a plurality of annular grooves 3, the outside of the first casing and the second casing are respectively provided with annular protrusions 4, and the outside of the first casing is sleeved with a first threaded sleeve. 12. A second threaded sleeve 22 is sleeved on the outside of the second sleeve, and the first threaded sleeve and the second threaded sleeve are connected by threads. The annular protrusion of the first sleeve and the second sleeve An annular sealing ring 5 is installed between the annular protrusions of the pipe, and the annular sealing ring 5 seals the annular protrusions of the first sleeve and the annular protrusions of the second sleeve.

The annular sealing ring 5 is located inside the second threaded sleeve, and the annular protrusions of the first sleeve and the second sleeve adopt elastic components, so that the first sleeve and the second sleeve can be ring-shaped Compress the sealing ring.

The first threaded sleeve 12 has internal threads, and the second threaded sleeve 22 has external threads, so that the two threaded sleeves are connected by threads.

The first sleeve 11 and the first connecting pipe 1 are formed by spinning and sealed, and the second sleeve 21 and the second connecting pipe 2 are formed by spinning and sealing.

Preferably, the first threaded sleeve 12 is connected with the first sleeve 11 by a rotating and sliding connection, so that the first threaded sleeve does not drive the first sleeve to rotate together during the rotation.

Preferably, the second threaded sleeve 22 is connected to the second sleeve 21 by a rotating and sliding connection, so that the second threaded sleeve does not drive the second sleeve to rotate together during rotation.

A detachable pipe joint of equal inner diameter described in the utility model adopts the method of spinning to connect the casing and the connecting pipe. After the two connecting pipes are connected, the inner wall between the connecting pipes is continuous, and there will be no The sudden increase or drop of the inner diameter makes the fluid flow unsmooth, and realizes the detachable connection between the two connecting pipes.

The technical content and technical features of the utility model have been disclosed above, but those skilled in the art may still make various replacements and modifications based on the teaching and disclosure of the utility model without departing from the spirit of the utility model. Therefore, the protection of the utility model The scope should not be limited to the content disclosed in the embodiments, but should include various replacements and modifications that do not deviate from the utility model, and are covered by the claims of the utility model.

Claims (6)

1. A detachable equal inner diameter pipe joint, comprising a first sleeve (11) sleeved on the end of the first connecting pipe (1), a second sleeve (11) sleeved on the end of the second connecting pipe (2) 21), characterized in that the port of the first sleeve is provided with multiple annular grooves (3), the port of the second sleeve is provided with multiple annular grooves, the first sleeve and the outside of the second sleeve are respectively provided with annular protrusions, a first threaded sleeve (12) is sleeved on the outside of the first sleeve, and a second threaded sleeve (22) is sleeved on the outside of the second sleeve ), the first threaded sleeve and the second threaded sleeve are threadedly connected, and an annular sealing ring (5) is installed between the annular protrusion of the first sleeve pipe and the annular protrusion (4) of the second sleeve pipe ), the annular sealing ring forms a sealed connection between the annular protrusion of the first sleeve and the annular protrusion of the second sleeve. 2. A detachable equal inner diameter pipe joint according to claim 1, wherein the annular sealing ring is located inside the second threaded sleeve, and the first sleeve and the second sleeve The annular protrusion adopts an elastic component, so that the first sleeve and the second sleeve can compress the annular sealing ring. 3. A detachable equal-inner diameter pipe joint as claimed in claim 1, wherein the first threaded sleeve has an internal thread, and the second threaded sleeve has an external thread, so that there is a gap between the two threaded sleeves. Connected by thread. 4. A detachable pipe joint with equal inner diameters according to claim 1, characterized in that, the first sleeve and the first connecting pipe are formed by spinning and sealing connection, and the second sleeve and the first connecting pipe are formed by sealing. The second connecting pipes are connected and formed by spinning and sealing. 5. A detachable equal inner diameter pipe joint according to claim 1, characterized in that, the first threaded sleeve and the first sleeve are connected by rotating and sliding, so that the first threaded sleeve is in the process of rotating The middle will not drive the first casing to rotate together. 6. A detachable pipe joint of equal inner diameter as claimed in claim 1, characterized in that, the second threaded sleeve and the second sleeve are connected by rotating and sliding, so that the second threaded sleeve is in the process of rotating The middle will not drive the second casing to rotate together.