CN102758976A

CN102758976A - Thin-wall metal pipe fitting and thin-wall metal pipe connection technical method

Info

Publication number: CN102758976A
Application number: CN2011101057520A
Authority: CN
Inventors: 庞浩辉
Original assignee: 庞浩辉
Current assignee: Guangdong Jian Technology Co., Ltd.
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2012-10-31
Anticipated expiration: 2031-04-25
Also published as: WO2012146069A1; CN102758976B

Abstract

The invention discloses a thin-wall metal pipe fitting and a thin-wall metal pipe connection technical method. The thin-wall metal pipe fitting comprises a thin-wall metal pipe body, a thin-wall pipe joint, a sealing ring and a top cylinder, wherein a salient point is pressed at the end part of the thin-wall metal pipe body; the pipe joint formed on the thin-wall metal pipe body expands in an insertion top opening, and then an insertion hole with the internal-external thread shape is rolled; a conical step is arranged at the bottom of the insertion hole; when in mounting connection, the top cylinder is sleeved in the pipe body; a salient point is pressed at the end part of the pipe body; the sealing ring is sleeved in front of the salient point of the pipe body; then all components are inserted into the insertion hole of the pipe joint; the sealing ring on the pipe body clings to the conical step at the bottom of the insertion hole of the pipe joint; the top cylinder is tightened clockwise by the external thread of the top cylinder along the internal thread of the pipe joint; the top cylinder pushes the salient point of the pipe body while pressing the sealing ring in front of the salient point; and when the sealing ring is pressed, the sealing ring forms firm sealing connection with the pipe body and the pipe joint. Through the technical method, the production cost of the pipe joint is greatly reduced, the construction is simple and quick, the labor intensity and the construction difficulty are remarkably reduced, the problem of the expensive pipe joint is perfectly solved, and the application prospect of the thin-wall metal pipe is wider.

Description

Thin-wall metal pipe and thin metallic tubd interconnection technique method

Technical field:

The present invention relates to liquid, gas transmission pipeline interconnection technique field, technological method particularly is tightly connected between thin metallic tubd and thin-wall metal pipe.

Background technique:

Traditional metal tube and pipe connector all are heavy walls, need need increase the wall thickness of tubing in order to cut with scissors worm tooth in the method for the port of tubing hinge screw thread; Cause the metallic material serious waste, cost of production is high, in recent years alternative by thin-wall stainless steel and pipe fitting gradually; Press Placement like at present more popular card, in thin-wall stainless steel pipe fitting joint socket, do not have seal ring, thin-wall stainless steel is injected the pipe joint joint socket after; From pipe fitting joint socket outside, firmly clamper tube spare and tubing inwardly become hexagon from circle together to making between the two with special tool; Thereby reach sealing effect, but because clamp-press type connecting part disposable use owned by France, can not dismantle that title " extremely connects " or " affixed "; Moreover card presses connecting means higher to workmen's quality and technical requirements, and frequent appearance card is pressed not in place, when perhaps tubing inserts the pipe fitting joint socket; The pipe end burr scratches the phenomenons such as seal ring in the pipe fitting easily, tubing with pipe fitting in case card is pressed when being connected the back discovery and leaking necessary sawed-off tubing retubing again; Both time-consuming, waste pipe fitting again.It is to adopt hinge worm tooth method that a kind of loose joint pipe fitting is arranged in recent years, because pipe fitting adopts precision casting to process, the big 4-6 of its wall ratio tube wall thickness doubly.Its cost of material and processing cost are higher, and be very expensive to the pipe fitting price that makes the hinge worm tooth, when applying, receives very big restriction, and these all find better interconnection technique method and cause.

Summary of the invention:

The objective of the invention is to overcome the fault of tradition and existing connecting means, but propose a kind of simple and easy, quick, the practical repeated disassembled and assembled (need not saw pipe) of saving economical, thin-wall metal pipe interconnection technique method that secure seal property is more excellent both used.

The objective of the invention is to realize through following technological scheme: thin-wall metal pipe and thin metallic tubd interconnection technique method include thin-walled body, thin walled tube joint, seal ring, the top tube.It also is that the thin metallic tubd system becomes that thin metallic tubd end of body pincers have been pressed salient point, pipe joint, and the roll extrusion after dilating of pipe joint port has the joint socket of internal and external threads shape; Have the type conical bench that to put seal ring in the bottom of joint socket, when assembling connects, in top collet inlet pipe body; Pressed salient point at body end pincers, packed into body end salient point front to seal ring, then them together in the insertion tube joint joint socket; The seal ring of tube opening is adjacent to the type conical bench of pipe joint joint socket bottom; With the internal thread of top tube, in the precession joint socket, tighten the top tube with handle more clockwise along the pipe joint joint socket; The seal ring in compressing salient point the place ahead in the time of top tube pushing body salient point, seal ring and pipe joint and body form the secure seal connecting means behind the pressurized at this moment.

Such connecting means has tangible advantage, and the metal body need not carry out damaging hinge worm tooth processing, need only press salient point at body end pincers; Pipe joint need not cut with scissors the damaging cutting of worm tooth equally; Need only dilate roll extrusion internal and external threads in back in the pipe joint end, can meet the secure seal purpose of connecting, this connecting means greatly reduces the consumptive material of pipe fitting; Processing cost significantly reduces; Advantages such as the manufacture cycle greatly reduces but also to have an installation simpler and easy quick, and installing/dismounting is more convenient, and the secure seal performance is better.

Description of drawings:

Accompanying drawing is an interconnection technique method schematic representation of the present invention.

The practical implementation method:

Referring to accompanying drawing, present embodiment is mainly by thin-wall stainless steel body 1, thin-wall stainless steel pipe joint 2, and rubber seal 3, top tube 4 constitutes.Specialization is that the end pincers of body 1 have been pressed salient point 11; Expand in the end of thin walled tube joint 2 to have and to put the socket joint hole 21 that body 1 and seal ring 3 have internal and external threads relatively into; The bottom in socket joint hole 21 has the type conical bench 22 that can put seal ring 3 into, and the outside thread 41 of top tube 4 can corresponding matching with joint internal thread 21.Install when connecting, will push up tube 4 earlier and pack in the body 1, pincers have been pressed salient point 11 in the end of body 1; Again seal ring 3 is packed into the front of body salient point 11; With them together in the internal and external threads socket joint hole 21 of insertion tube joint 2, the seal ring 3 of body 1 end is adjacent to pipe joint type conical bench 22, in the internal thread spinning in pipe joint 2 of outside thread 41 in pipe joint socket joint hole 21 of top tube 4 then; Tightened the top tube at 4 o'clock with handle; Compress salient point 11 the place ahead seal rings 3 in the time of the salient point 11 of top tube 4 pushing bodys, this moment be stressed back and body 1 of seal ring 3, pipe joint type conical bench 22 forms secure seal interconnection technique methods.

Certainly, just list here and lift a kind of preferred implementation, the present technique scheme can be done other and be equal to or variation roughly the same, no longer statement here, but they should belong to the protection domain of this patent.

Claims

1. thin-wall metal pipe and thin metallic tubd interconnection technique method include the thin-wall metal body, pipe joint; Seal ring, the top tube, thin metallic tubd end of body pincers have been pressed salient point; Pipe joint also is that the thin metallic tubd system becomes the roll extrusion after dilating of pipe joint port that the joint socket of internal and external threads shape is arranged, and the bottom of joint socket has can put the seal ring type conical bench, installs when connecting; In top collet inlet pipe body, pincers have been pressed salient point in the body end, pack into body salient point front to seal ring; Them together in the insertion tube joint joint socket, the seal ring of tube opening is adjacent to the type conical bench of pipe joint joint socket bottom, with the internal thread of top tube along the pipe joint joint socket then; In the precession joint socket, tighten the top tube with handle more clockwise, the seal ring in compressing salient point the place ahead in the time of top tube pushing body salient point; After seal ring is stressed and body, pipe joint forms secure seal interconnection technique method.

2. the salient point of body according to claim 1 end can be a bit or 2 points, and can big more distribution salient point is many more according to the size of body bore, can not be equally spaced around the salient point and the salient point of caliber, but can not on weld line, clamp the belling point.

According to the distance of the salient point of the said body of claim and pipe end smaller or equal to 60mm, the same salient point of body of wanting will equate to the distance between the mouth of pipe; This body external diameter of the height of salient point can not exceed 6mm.

4. be to process with thin metallic tubd according to the said connecting head of claim 1, the wall thickness of pipe joint is equal to or greater than the wall thickness of tubing, but can not be greater than 2.5 times of tube wall thickness.