CN201190850Y

CN201190850Y - Double-sealed and double-secured double-cutting sleeve type pipe joint

Info

Publication number: CN201190850Y
Application number: CNU2008200342723U
Authority: CN
Inventors: 朱义芳; 匡红卫; 于志明; 耿成林
Original assignee: JIANGSU XINGHAI GROUP CO Ltd
Current assignee: JIANGSU XINGHAI GROUP CO Ltd
Priority date: 2008-04-22
Filing date: 2008-04-22
Publication date: 2009-02-04
Anticipated expiration: 2018-04-22

Abstract

The utility model relates to a dual ferrule pipe joint with dual seals and dual fixations, which comprises a joint body, a front ferrule, a back ferrule and a nut. The dual ferrule pipe joint is characterized in that the right end of the joint body is provided with a horn opening, the part near the inner side of the horn opening for plugging and connecting a pipe is provided with a cone tubular structure in the taper of 4-14 degrees, the periphery of the front ferrule is in a cone form whose right port is provided with a back inner cone angle of 76-85 degrees, the left port of the back ferrule is provided with a front outer cone angle of 66-75 degrees. The dual ferrule pipe joint has simple structure, reliable seal effect, simple use, repeated use and good assembly effect, and can improve the connecting strength of pipe system. When installs and connects a pipe, the pipe can be quickly positioned in a plughole to confirm linearity and improve the micro adjustment in the installment of the pipe. The front and the back ferrule can fasten and seal the pipe together, having dual seals and dual fixations.

Description

Double-sealing, the solid two Bite type fittingss of two-restriction

Technical field

The utility model is a kind of Bite type fittings of connecting tube, especially a kind of solid two Bite type fittingss of double-sealing, two-restriction that are used for oil, gas and general aggressive medium pipe-line system.

Background technique

Pipe-line system is the carrier of various flowing mediums, and along with science and technology development, the application area of pipe-line system is more and more wider, and the Placement between the pipeline is also constantly increasing and upgrading.Bite type fittings is a kind of coupling of convenient, reliable, the mesohigh pipeline that is easy to installing/dismounting, and it specifically is divided into two kinds of single deck tape-recorder shell type pipe joint and two Bite type fittingss.The deficiency of single deck tape-recorder shell type pipe joint is: no temperature difference compensation function, repeat easily to leak after the dismounting, and can not repeat to exchange and use, need the special tool assembling, the conformity of assembling is poor, and shock resistance vibrations poor performance.For overcoming the defective of single deck tape-recorder shell type pipe joint, the nineties in last century, many enterprises begin imitated external two Bite type fittingss, but product performance are still very bigger than the product gap of import, and its main deficiency is: (1) join strength is low; (2) anti-shake performance is poor; (3) high temperature high voltage resistant poor performance.

Summary of the invention

Technical problem to be solved in the utility model: be that a kind of double-sealing, the solid two Bite type fittingss of two-restriction will be provided, this pipe joint can not only increase substantially join strength, make pipe joint sealability be improved significantly, under high temperature and vibration environment, the join strength of pipeline and sealability can be significantly improved.

For solving the technological scheme that above technical problem adopts is such: the utility model partly is made up of fittings body, preceding cutting ferrule, back cutting ferrule, nut etc. four from left to right successively, it is characterized in that: the fittings body right-hand member has a horn mouth, be used for socket joint near the horn mouth inboard and connecting the part of pipe, be provided with the tapered tube shape structure, its tapering is 4 °～14 °, it is conical that the periphery of preceding cutting ferrule is, its right output port is provided with 76 °～85 ° back interior cone angle, and back cutting ferrule left port is provided with 66 °～75 ° preceding outside cone angle.Like this, installing and the connecting tube period of the day from 11 p.m. to 1 a.m, pipe is located in joint socket easily fast, guaranteed straightness accuracy, while has also increased the fine adjustment amount when pipe is installed, and the design of interior cone angle of preceding cutting ferrule and the preceding outside cone angle of back cutting ferrule, can greatly improve the variable and the moment of cutting ferrule.

Owing to adopt above technological scheme, produced beyond thought effect:

1, simple in structure, sealability is reliable, and is easy to use, it is good to exchange the dismounting performance repeatedly, has greatly improved the join strength of pipe-line system, and mounting torque reduces greatly, anti-shake performance be improved significantly, under high temperature and high pressure environment, the join strength and the sealability of pipe-line system obviously improve.

2, can be widely used in leading directly to, the connection of pipelines such as curved logical, threeway, four-way.

Description of drawings

Fig. 1 cuts open figure for the utility model structure office.

Fig. 2 is the structural profile enlarged view of preceding cutting ferrule 2 among Fig. 1.

Fig. 3 is the structural profile enlarged view of back cutting ferrule 3 among Fig. 1.

Fig. 4 is the structure enlarged view of I among Fig. 1.

Fig. 5 installs reference drawing for the utility model.

Among the figure: 1, fittings body 2, preceding cutting ferrule 3, back cutting ferrule 4, nut 5, preceding cutting ferrule top 6, cutting ferrule top, back

Embodiment

With reference to Fig. 1, the utility model partly is made of fittings body 1, preceding cutting ferrule 2, back cutting ferrule 3, nut 4 etc. four from left to right successively.Fittings body 1 right-hand member has a horn mouth, be used for socket joint near bell-mouthed inboard and connecting the part of pipe, the tapered tube shape structure is set, its tapering is 4 °～14 °, it is conical that the periphery of preceding cutting ferrule 2 is, cone angle in after its right output port is provided with 76 °～85 °, back cutting ferrule 3 left port are provided with 66 °～75 ° preceding outside cone angle.

As Fig. 5, at the connecting tube period of the day from 11 p.m. to 1 a.m, after inserting, pipe is easy to the location, both guaranteed the straightness accuracy of pipe, increased the fine adjustment amount when pipe is installed again, so mounting torque can reduce greatly.In addition, as can be seen from Figure 5, owing to the structure of outside cone angle before interior cone angle behind the preceding cutting ferrule and the back cutting ferrule, the forward and backward cutting ferrule twice while is fastening and seal up pipe, has played double-sealing, the effect that two-restriction is solid.

Claims

1, a kind of double-sealing, the solid two Bite type fittingss of two-restriction, it comprises fittings body (1), preceding cutting ferrule (2), back cutting ferrule (3), nut (4) from left to right successively, it is characterized in that: fittings body (1) right-hand member has a horn mouth, be used for socket joint near the horn mouth inboard and connecting the part of pipe, be provided with the tapered tube shape structure, its tapering is 4 °～14 °, it is conical that the periphery of preceding cutting ferrule (2) is, its right output port is provided with 76 °～85 ° back interior cone angle, and back cutting ferrule (3) left port is provided with 66 °～75 ° preceding outside cone angle.