CN2643121Y - Screwthread selfadaptive sealing arrangement for wimble pipe - Google Patents
Screwthread selfadaptive sealing arrangement for wimble pipe Download PDFInfo
- Publication number
- CN2643121Y CN2643121Y CN 03218407 CN03218407U CN2643121Y CN 2643121 Y CN2643121 Y CN 2643121Y CN 03218407 CN03218407 CN 03218407 CN 03218407 U CN03218407 U CN 03218407U CN 2643121 Y CN2643121 Y CN 2643121Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- seal
- pipe
- bimetal
- composite bimetal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims description 32
- 238000003889 chemical engineering Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000000584 Calmodulin Human genes 0.000 description 1
- 108010041952 Calmodulin Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The model is a self-adaptive sealing device with cone type tube screw, which is provided with a thread joint at two ends of two bimetal-lined pipes. A metal lining is arranged in the thread joint of two bimetal-lined pipes. Two seal rings are fixed in the metal lining arranged between two bimetal-lined pipes. The model possesses advantages of simple structure, convenient operation, reliable sealing property, simple operation and low cost, etc. The device is applicable for self-adaptive sealing device of J site in all kinds of pipes, especially when cone type screw joint is applied in bimetal-lined pipes. The device is particularly applicable for oil tube with thread collar connection. The device is also applicable for extended application of the pipe connection in industries including chemical engineering, water supply and drainage, pharmacy and food, etc.
Description
Technical field
The utility model belongs to the device that fastening or fixed component or machine parts are used, and coupling or connection technique field are specifically related to interconnecting of bar or pipe.
Background technique
Composite bimetal pipe such as carbon steel/stainless steel composite pipe, carbon steel/copper composite pipe, carbon steel/aluminium composite pipe etc., because its price is low, Corrosion Protection is good and be used widely in industrial quarters.Under the in use many situations of pipeline by being threaded, as pipeline and being connected of threeway be by being threaded, the oil pipe that petroleum industry is used connects by threaded collar joint.
Lost efficacy in order to prevent that pipe end from answering back to cause connecting, and reserved certain space to machine between the tight pipe end plane at the box cupling central plane, this space is referred to as the J position, and after two straight tubes were tightened, box cupling intermediate thread exposed part length was 2J.For petroleum steel pipe, China's oil Gas Industry standard code J=12.7 ± 5.08mm, in view of the above, the scope of J value changes between 7.62-17.78mm, and in industries such as chemical industry, pharmacy, the excursion of J value also is very big.Corrosion protection is a major function of composite bimetal pipe, by the composite bimetal pipe that is threaded, its weak link is the J position of screw thread, blow-by, exposed screw thread and pipe end face can preferentially corrode, seal badly, intermetallic potential difference can quicken the corrosion of screw thread and pipe end face, causes to connect to lose efficacy.
At present, the method that solves the sealing of J position has two kinds: one, and the gasket seal of a fixed dimension of employing is because J value change at random in a larger size range, pipe end compression seal pad produces overcompression or the under-voltage phenomenon that contracts sometimes, so this method sealing reliability is poor; They are two years old, adopt the gasket seal of two groups of above sizes, match gasket seal according to the difference of J value at the construction field (site), though this method increases sealing reliability, but need manual measurement and apolegamy gasket seal at the construction field (site), be not easy to engineering and use, simultaneously, owing to be the grouping apolegamy, adjustment leeway is limited, it is best that the screw connection point seal parameters is difficult to reach, and therefore, it is relatively poor to bear the high pressure ability.In a word, the pipeline that employing is threaded, particularly adopt the bimetal compound pipeline that is threaded, but it is the extremely important extremely thin weak link of pipe-line system that the J position seals, the major technique difficulty that addresses this problem is that J value excursion is too big, and the sealing configuration that uses can't adapt to the variation of J value automatically now.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the shortcoming that above-mentioned composite bimetal pipe connects sealing, provide a kind of simple in structure, easy to use, sealability is reliable, easy and simple to handle, tapered pipe thread self-adapting seal device that cost is low.
Solving the problems of the technologies described above the technological scheme that is adopted is: be provided with threaded collar joint at the two ends of two composite bimetal pipes, between two composite bimetal pipes, be provided with metal lining in the threaded collar joint, between two composite bimetal pipes, be provided with two seal rings in the metal lining.
The span of chamfering α is in the outside of seal ring of the present utility model: 30 °≤α≤60 °.The span of the inboard outer undercut ss of seal ring of the present utility model is 30 °≤β≤60 °.The span of the outer ring tapering γ of seal ring of the present utility model is 1 °≤γ≤5 °.
Seal ring of the present utility model is a teflin ring.
The utility model is compared with the seal arrangement that present existing pipe thread connection part J value changes, between two composite bimetal pipes, be provided with metal lining in the scyewed joint hoop, between two composite bimetal pipes, be provided with two seal rings in the metal lining, can adapt to the J value in connection procedure automatically changes, it have simple in structure, easy to use, sealability is reliable, easy and simple to handle, low cost and other advantages, when can be used for various pipelines particularly bimetal compound pipeline adopting tapered being threaded, J position self-adapting seal device.The utility model is particularly suitable for adopting the petroleum oil of threaded collar joint connection, promote the use of in also can connecting at the pipeline of industries such as chemical industry, plumbing, pharmacy, food.
Description of drawings
Fig. 1 is the connection diagram of the utility model and two composite bimetal pipes.
Fig. 2 is the structural representation of seal ring 4,5 among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiments.
In Fig. 1,2, the tapered pipe thread self-adapting seal device of present embodiment is made of threaded collar joint 3, seal ring 4, seal ring 5, metal lining 6 connections.
Pass through scyewed joint threaded collar joint 3 at composite bimetal pipe 1, composite bimetal pipe 2 two ends, scyewed joint hoop inwall is equipped with metal lining 6 between composite bimetal pipe 1, composite bimetal pipe 2, seal ring 4, seal ring 5 are installed in the metal lining 6 between composite bimetal pipe 1, composite bimetal pipe 2, the geometrical shape of seal ring 4, seal ring 5 is identical, be to make with polytetrafluoroethylmaterial material, seal ring 4 is installed in the end of composite bimetal pipe 1, seal ring 5 is installed in the end of composite bimetal pipe 2, leaves the gap between seal ring 4 and the seal ring 5.
Chamfering α is 45 ° in the outside of the seal ring 4 of present embodiment, and the inboard outer undercut ss of seal ring 4 is 45 °, and the outer ring tapering γ of seal ring 4 is 3 °.
Embodiment 2
In the present embodiment, chamfering α is 30 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 30 °, and the outer ring tapering γ of seal ring 4 is 1 °, the connecting relation of other component and component and
Embodiment 1 is identical.
In the present embodiment, chamfering α is 60 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 60 °, and the outer ring tapering γ of seal ring 4 is 5 °, the connecting relation of other component and component and
Embodiment 1 is identical.
Embodiment 4
In the present embodiment, chamfering α is 30 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 30 °, and the outer ring tapering γ of seal ring 4 is 5 °, the connecting relation of other component and component and
Embodiment 1 is identical.
In the present embodiment, chamfering α is 30 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 60 °, and the outer ring tapering γ of seal ring 4 is 1 °, the connecting relation of other component and component and
Embodiment 1 is identical.
In the present embodiment, chamfering α is 60 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 30 °, and the outer ring tapering γ of seal ring 4 is 1 °, the connecting relation of other component and component and
Embodiment 1 is identical.
Embodiment 7
In the present embodiment, chamfering α is 30 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 60 °, and the outer ring tapering γ of seal ring 4 is 5 °, the connecting relation of other component and component and
Embodiment 1 is identical.
Embodiment 8
In the present embodiment, chamfering α is 60 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 30 °, and the outer ring tapering γ of seal ring 4 is 5 °, the connecting relation of other component and component and
Embodiment 1 is identical.
Embodiment 9
In the present embodiment, chamfering α is 60 ° in the outside of seal ring 4, and the inboard outer undercut ss of seal ring 4 is 60 °, and the outer ring tapering γ of seal ring 4 is 1 °, the connecting relation of other component and component and
Embodiment 1 is identical.
Working principle of the present utility model is as follows:
In composite bimetal pipe 1, composite bimetal pipe 2 rundown process, crush seal circle 4, seal ring 5 force seal ring 4, seal ring 5 to axially move.Because seal ring 4, seal ring 5 all have external taper, in moving axially process, along with reducing of threaded collar joint 3 tapered pipe thread hole internal diameters, the outer rim of seal ring 4, seal ring 5 is cut by the internal thread tooth of threaded collar joint 3, and the polytetrafluorethylepowder powder after the cutting enters in the thread gaps of composite bimetal pipe 1, composite bimetal pipe 2 and threaded collar joint 3 and produces the thread seal effect.When seal ring 4, seal ring 5 continue to move axially, seal ring 4, seal ring 5 can meet with metal lining 6, under the effect of screw threads for fastening power, seal ring 4, the end face of seal ring 5 is cut by metal lining 6, polytetrafluorethylepowder powder after the cutting is squeezed into the gap location of metal lining 6 and threaded collar joint 3, plays the calmodulin binding domain CaM seal action.After composite bimetal pipe 1, composite bimetal pipe 2 reach screw-down torque, seal ring 4, seal ring 5 are overlapped with metal inner lining cover 6, automatically form a sealing size, this size just is the twice of this looped pipeline joint J value, simultaneously, the end face of composite bimetal pipe 1, composite bimetal pipe 2, seal ring 4, seal ring 5 constitutes a radially citadel with metal inner lining cover 6, has played J value district seal action.
Claims (3)
1, a kind of tapered pipe thread self-adapting seal device, it is characterized in that: the two ends at two composite bimetal pipes [1,2] are provided with threaded collar joint [3], between two composite bimetal pipes [1,2], be provided with metal lining [6] in the threaded collar joint [3], between two composite bimetal pipes [1,2], be provided with two seal rings [4,5] in the metal lining [6].
2, according to the described tapered pipe thread self-adapting seal device of claim 1, it is characterized in that: the span of chamfering α is in the outside of said seal ring [4,5]: 30 °≤α≤60 °; The span of the inboard outer undercut ss of said seal ring [4,5] is 30 °≤β≤60 °; The span of the outer ring tapering γ of said seal ring [4,5] is 1 °≤γ≤5 °.
3, according to claim 1 or 2 described tapered pipe thread self-adapting seal devices, it is characterized in that: said seal ring [4,5] is a teflin ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218407 CN2643121Y (en) | 2003-01-07 | 2003-01-07 | Screwthread selfadaptive sealing arrangement for wimble pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218407 CN2643121Y (en) | 2003-01-07 | 2003-01-07 | Screwthread selfadaptive sealing arrangement for wimble pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2643121Y true CN2643121Y (en) | 2004-09-22 |
Family
ID=34290293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218407 Expired - Lifetime CN2643121Y (en) | 2003-01-07 | 2003-01-07 | Screwthread selfadaptive sealing arrangement for wimble pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2643121Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN108458173A (en) * | 2017-02-20 | 2018-08-28 | 新昌县广远管业有限公司 | The screw connection structure of liner two-phase stainless steel composite steel pipe |
-
2003
- 2003-01-07 CN CN 03218407 patent/CN2643121Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN101915064B (en) * | 2010-09-14 | 2015-05-20 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN108458173A (en) * | 2017-02-20 | 2018-08-28 | 新昌县广远管业有限公司 | The screw connection structure of liner two-phase stainless steel composite steel pipe |
| CN108458173B (en) * | 2017-02-20 | 2024-03-15 | 新昌县广远管业有限公司 | Threaded connection structure of lining stainless steel composite steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130107 Granted publication date: 20040922 |