CN1693746A - Thin wall tightening connector for motal pipe - Google Patents
Thin wall tightening connector for motal pipe Download PDFInfo
- Publication number
- CN1693746A CN1693746A CN 200510034664 CN200510034664A CN1693746A CN 1693746 A CN1693746 A CN 1693746A CN 200510034664 CN200510034664 CN 200510034664 CN 200510034664 A CN200510034664 A CN 200510034664A CN 1693746 A CN1693746 A CN 1693746A
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- pipe
- connector
- thin
- motal
- thin wall
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Abstract
The invention relates to a thin wall tightening collector for metal tube that uses rotating nut to make the tube cause plastic deformation of contracting and block into the dent groove circle of the joint to achieve the aim of connecting tube tightly. The feature of the connector is that it is easy to connect and sealing is reliable, and the pulling proof force would be equal to the stretching resistance of the tube material. The advantage of the invention is that: first, it solves the problem of having not enough pulling proof force of the existing thin wall metal tube connector; second, it needs not to be preprocessed; third, it reforms the connection process of the tube. Thus, the invention is especially suited for connecting the thin wall metal tube that is bearing high pressure.
Description
Technical field
The installation that the present invention relates to metal tube connects, and is used to the connection of carrying medium pipelines such as hot water or cold water, G﹠O to install.
Pipe will just can be mounted to pipeline and is used for conveying gas or liquid and other medium by connecting.The installation quality of the degree that the is connected firmly decision pipeline of pipe.Therefore, developing easy to connect, reliable sealing pipe connector, is to improve the pipe safety key in application.
Background technique
Metal tube so be the desirable tubing of conveying gas or liquid, particularly bears the pipeline of very high working pressure because intensity height, good toughness, anti-aging and anti-damage capability are strong.
The connection of metal tube mainly contains welding or the method that is threaded, and the enforcement that wherein is welded to connect will possess certain conditions, and difficulty of construction height, expense are big, so less employing in the pipeline of middle-size and small-size caliber connects; The easy construction that is threaded, but the end of pipe all needs to be processed into the interface with screw thread in advance, so also inconvenient.In order to reduce the cost of applied metal pipe, begun to use the metal tube of thin-walled at present both at home and abroad, as the copper pipe of thin-walled and the stainless steel pipe of thin-walled, the connection of the metal tube of these thin-walleds generally has: compression type connects (see figure 2), threaded sleeve connects (see figure 3) and is connected (see figure 4) with flange.These connect owing to all need in advance pipe end to be handled and could be connected, thus connection charge height not only, and application inconvenience again.As: the compression type of Fig. 2 connects, and pipe end need be processed evagination annulus 10 in advance and could connect; The thread bush pipeline of Fig. 3 connects, and the pipe end external thread sleeve 11 of will burn-oning in advance could connect; The flange of Fig. 4 connects, and the pipe end flange 12 of will burn-oning equally could connect.Therefore use trouble.
Summary of the invention
The purpose of this invention is to provide a kind of connector that the thin metallic tubd of straight body directly can be connected, its connection is not only simple and convenient, and sealing is very reliable, and can bear very high working pressure, also can use in very abominable construction environment.
A kind of thin wall tightening connector for motal pipe (see figure 1) of the present invention mainly is made up of circle convex annulus 8 in the outside thread 9 of the groove annulus 6 of pipe 1, nut 2, lap joint 3, cushion rubber pressure ring 4, pipe undergauge cushion rubber 5, clearance seal cushion rubber 7, lap joint 3, lap joint 3 and the pipe.
The catenation principle of connector of the present invention is to utilize the outside thread 9 of 2 pairs of lap joints 3 of nut to screw in, compress by 4 pairs of pipe undergauges of cushion rubber pressure ring cushion rubber 5, make cushion rubber 5 internal diameters dwindle, and the pipeline section in the 1 insertion lap joint 3 of compression pipe, and make its pipe circumference produce the plastic deformation of undergauge, and make the interior circle of the pipe convex annulus 8 that forms after its pipe undergauge plastic deformation snap in the groove annulus 6 of lap joint 3, but, can prevent that again pipe from taking off the purpose of mouth to reach both tight seal pipes.
Therefore connector of the present invention is fit to the connection use of the metal tube of thin-walled.Being particularly suitable for bearing very, the pipe of high workload pressure connects use.
Description of drawings
Fig. 1, thin wall tightening connector for motal pipe
1, pipe; 2, nut; 3, lap joint; 4, cushion rubber pressure ring; 5,, pipe undergauge cushion rubber; 6, the groove annulus of lap joint 3; 7, clearance seal cushion rubber; 8, circle convex annulus in the pipe; 9, the outside thread of lap joint 3.
Fig. 2, compression type connect
10, evagination annulus; 1, pipe
Fig. 3, thread bush tubular type connect
11, threaded sleeve; 1, pipe
Fig. 4, flange-type connect
12, flange; 1, pipe
Embodiment
If adopting thin wall tightening connector for motal pipe to connect external diameter is 20mm, wall thickness is the thin-wall stainless steel of 0.6mm.
Nut 2 (thread pitch is 2mm) (see figure 1), pipe undergauge cushion rubber 5 (the cushion rubber internal diameter is that 19mm, cushion rubber line directly are 2.5mm) and cushion rubber pressure ring 4 preface successively are inserted in the cylindrical of pipe 1 to be connected, clearance seal cushion rubber 7 is inserted in the inner, end of lap joint 3, again pipe 1 is packed into the end of lap joint 3, adopt spanner nut 2 to be screwed in the outside thread 9 of lap joint 3.The moment of torsion that screws nut 2 when spanner is during greater than 0.8kg-m, pipe undergauge cushion rubber 5 is under the axial compressing of cushion rubber pressure ring 4 and nut 2, the undergauge stress that makes cushion rubber 5 form greater than 70MPa, pipe 1 is under the undergauge stress of cushion rubber 5, the stress that its pipe wall material bears is greater than 900MPa (greater than stainless tensile strength 520MPa), so pipe 1 produces the plastic deformation of undergauge by the shape of the groove annulus 6 of lap joint 3, and make the pipe plastic deformation and the interior round convex annulus 8 that forms snaps in the groove annulus 6 of lap joint 3, to reach the purpose that restriction pipe 1 pulls in the connector, its anti-pulling-out force can equal the stretching resistance of tubing.Pipe 1 under the tight seal by pipe undergauge cushion rubber 5 and clearance seal cushion rubber 7, reaches non-leakage effect in connector simultaneously.By above step, finish and adopt the connection of thin wall tightening connector for motal pipe the thin-wall stainless steel pipe.
Claims (6)
1, a kind of thin wall tightening connector for motal pipe mainly is made up of thin metallic tubd, nut, lap joint, cushion rubber pressure ring, pipe undergauge and O-ring seal.
2, a kind of thin wall tightening connector for motal pipe is characterized in that by screwing nut, makes the undergauge cushion rubber force pipe to produce the plastic deformation of undergauge.
3, a kind of thin wall tightening connector for motal pipe is characterized in that after the thin-wall metal tube connector connected pipe, pipe its outer round surface in connector formed a groove annulus, and its internal circular surfaces forms a convex annulus.
4, according to claim 3, the footpath, the end of the outer round recessed annulus that forms after pipe connects is slightly littler than tube outer diameter, and the internal diameter of the interior round convex annulus of pipe connection back formation is slightly littler than ips.
5, a kind of thin wall tightening connector for motal pipe is characterized in that its pipe undergauge cushion rubber snaps in the groove annulus of pipe after the thin-wall metal tube connector connects pipe.
6, a kind of thin wall tightening connector for motal pipe is characterized in that after the thin-wall metal tube connector connected pipe, circle convex annulus snapped in the groove annulus of lap joint in its pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034664 CN1693746A (en) | 2005-05-23 | 2005-05-23 | Thin wall tightening connector for motal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034664 CN1693746A (en) | 2005-05-23 | 2005-05-23 | Thin wall tightening connector for motal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1693746A true CN1693746A (en) | 2005-11-09 |
Family
ID=35352830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510034664 Pending CN1693746A (en) | 2005-05-23 | 2005-05-23 | Thin wall tightening connector for motal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1693746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812754A (en) * | 2017-03-20 | 2017-06-09 | 姜永达 | Long stroke hydraulic cylinder |
-
2005
- 2005-05-23 CN CN 200510034664 patent/CN1693746A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812754A (en) * | 2017-03-20 | 2017-06-09 | 姜永达 | Long stroke hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |