CN201858453U

CN201858453U - Socket connecting pipe fitting for connecting pipes

Info

Publication number: CN201858453U
Application number: CN2010205711844U
Authority: CN
Inventors: 蔡桂华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2011-06-08
Anticipated expiration: 2020-10-15

Abstract

The utility model discloses a socket connecting pipe fitting for connecting pipes, which comprise a connector. A hole-expanded section is arranged between ports of the connector, steel pipes to be connected are inserted to fit inside the hole-expanded section from the ports respectively, the inner wall of the hole-expanded section is provided with two or more circular grooves so that circular projections are formed on the surface of the hole-expanded section, and each circular groove is provided with an O-shaped seal ring inside. The circular grooves are arranged on the inner wall of the hole-expanded section of the connector, the cross section of each circular groove is rectangular, and groove depth is larger than radius of the O-shaped seal rings. The socket connecting pipe fitting solves the problems that press-fitting eccentricity and ease of pipe breakage in the prior art affect sealing reliability, seal rings are easy to push apart during pipe insertion in presence of semicircular seal grooves so as to result in press fitting failure and irreparability, and has the advantages of fine sealing performance, convenience in assembly and disassembly, simplicity in operation, high production efficiency and the like.

Description

The insertion pipe connection pipe fitting

Technical field:

The utility model relates to pipe connecting component, relates in particular to a kind of thin-wall stainless steel insertion pipe connection pipe fitting.

Background technique:

In the prior art, clamp-press type pipe with the connection of what thin-walled stainless steel tube plug-in type, in establish connecting body, there is one section reaming section on each port side, is connected two steel pipes and inserts two reaming sections respectively, and the connecting body port inner wall is established ring-type semi-circular recesses and O-ring seals, tube-surface forms the ring-type teat, after the inboard connecting body tube-surface of protuberance is used hydraulic tongs Ka Yaguanbi, become six prismatics, form the compression type sealing thus.There is following deficiency in this kind clamp-press type pipe: 1. the normal appearance in hydraulic tongs card pressure back is eccentric, makes these place's tubing wrinkle and breaks, and makes the compression of O type circle uneven; And because of being compression seal, and O type circle can not synchronous, all influences sealing reliability for this reason.2. the groove cross section is semicircle, need also must increase the protuberance height with big O type circle if will improve sealing for this reason; If groove is too shallow, circle is big, and O type circle is easily evaded during intubate.3. the tube wall after this kind pressed with the hydraulic tongs card, after card was pressed failure when installing, the joint can't be repaired.

Summary of the invention:

The purpose of this utility model provides a kind of insertion pipe connection pipe fitting, that the card that mainly solves clamp-press type pipe in the prior art is pressed is eccentric, tubing easily breaks, influence sealing reliability, and the problem such as can't repair of failing of pressing is easily evaded, blocks to seal ring during semicircle seal groove intubate.

The technical solution of the utility model is:

The insertion pipe connection pipe fitting, comprise connecting body, described connecting body port inboard is one section reaming section, connected tube inserts in the applying what reaming section from each port respectively, described reaming section inwall is provided with annular recess, form annular convex at reaming section tube-surface thus, be provided with O-ring seals in the described annular recess, the annular recess of described connecting body reaming section inwall setting is two or with on two, the cross section of described annular recess is a rectangle, and the radius of the big what O-ring seals of groove depth.

Described annular recess is two.

The beneficial effects of the utility model are good seal performance, and mounting or dismounting are convenient, easy and simple to handle, manufacturing efficiency is high: 1. use rectangular recess, and available than large size O type circle, form better sealing.This moment, O type circle was compressed in the groove fully, and formed the cylinder sealing between intubate.2. because of the big what O of groove depth type circle radius, O shape circle can not take to outside the groove because of frictional force when intubate was installed, and effectively guaranteed the intubate success.3. by hand can the inlet pipe intubate with Hydraulic power tools, because of the expander section is accurately to make with mould, so it is little all can to guarantee to insert both gaps, back, realization need not block the pressure mode and guarantee its sealability.4. the annular recess of connecting body reaming section inwall setting is two or with on two, is provided with O-ring seals in the annular recess, can be to being connected the sealing of steel pipe horizontal location conclusive evidence.5. the cross section of annular recess is a rectangle, and the radius of the big what O-ring seals of groove depth, can guarantee intubate after O type circle clamp-on entirely in the groove, have 3% above vacancy rate in the groove at least, can guarantee freely to stretch when seal ring expands with heat and contract with cold.

Description of drawings:

Fig. 1 the utility model embodiment's decomposing state structural representation.

Sequence number among the figure: 1, connecting body, 2, the reaming section, 3, annular recess, 4, annular convex, 5, O-ring seals, 6, connected tube.

Embodiment:

Below in conjunction with drawings and Examples, the utility model is described in further detail, but is not constituted any restriction of the present utility model:

Referring to Fig. 1, a kind of insertion pipe connection pipe fitting, comprise connecting body 1, described connecting body 1 port inboard is one section reaming section 2, and connected tube 6 inserts in the applying what reaming section 2 from each port respectively, described reaming section 2 inwalls are provided with annular recess 3, form annular convex 4 at reaming section 2 tube-surfaces thus, be provided with O-ring seals 5 in the described annular recess 3, described annular recess 3 is two, the cross section of described annular recess 3 is a rectangle, and the radius of the big what O-ring seals of groove depth.

Pipe joint various in style, commonly used having wait that (different) footpath leads directly to, elbow, threeway, four-way link or the like; They all can use structure of the present utility model to be connected with the pipe fitting that is complementary.

Embodiment is just for the ease of understanding the technical solution of the utility model; do not constitute restriction to the utility model protection domain; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present utility model above scheme being done that does not break away from technical solutions of the utility model all still belongs within the utility model protection domain.

Claims

1. insertion pipe connection pipe fitting, comprise connecting body (1), described connecting body (1) port inboard is one section reaming section (2), connected tube (6) inserts in the applying what reaming section (2) from each port respectively, described reaming section (2) inwall is provided with annular recess (3), form annular convex (4) at reaming section (2) tube-surface thus, be provided with O-ring seals (5) in the described annular recess (3), it is characterized in that: the annular recess (3) that described connecting body (1) reaming section (2) inwall is provided with is two or with on two, the cross section of described annular recess (3) is a rectangle, and the radius of the big what O-ring seals of groove depth.

2. insertion pipe connection pipe fitting according to claim 1 is characterized in that: described annular recess (3) is two.