CN2747436Y - Position limiting sealed active connected thin wall stainless steel pipe - Google Patents
Position limiting sealed active connected thin wall stainless steel pipe Download PDFInfo
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- CN2747436Y CN2747436Y CN 200420032778 CN200420032778U CN2747436Y CN 2747436 Y CN2747436 Y CN 2747436Y CN 200420032778 CN200420032778 CN 200420032778 CN 200420032778 U CN200420032778 U CN 200420032778U CN 2747436 Y CN2747436 Y CN 2747436Y
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- steel pipe
- ring
- groove
- flange
- stainless steel
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Abstract
A position limited sealed loose jointed thin-wall stainless steel pipe belongs to a pipe connection or pipe fittings of engineering element. The position limited sealed loose jointed thin-wall stainless steel pipe is to solve the problems of that: the sealing life the existing stainless steel pipe with a rectangular ring structure using flanging compression is short, and the heat expansion of long pipeline brings about a seal break-off. The utility model uses flange braced by two join steel pipe coat screw wire rings and nut screws or a bolt. An I-shaped stainless steel circular ring is installed between vertical flanges of two steel pipes, which forms two concave grooves. The concave groove has an O-shaped ring. Or one end of the steel pipe has a flange, and the O-shaped ring is fixed in the concave groove of the screw wire ring end plane. The two structures of groove and ring have to combine selection of identical parameters, so as to make the flange and the side opening of the concave groove be compacted. The rubber ring is entirety embedded in the concave groove. The thermal expansion pressure of the steel pipe only effects the rigid circular ring or the screw wire ring, so the destruction of overcompression to sealing ring caused by thermal expansion is avoided, and the service life of the steel pipe is guaranteed. The position limited sealed loose jointed thin-wall stainless steel pipe can be widely used in stainless steelpipe systems as direct head, triplet, angle fitting, etc, especially when the steel pipe is somewhat long, a temperature change is large, and the thermal expansion is severe.
Description
(1) technical field: this patent connects in the book wall Stainless Steel Tube pipe-line system of pressure-bearing delivery fluid with what.Belong to pipe joint or pipe fitting (F16L) in the what engineering element.
(2) background technique: existing own disclosed loose joint book wall Stainless Steel Tube pipe fitting with nut, bolt, its structure is: establish intermeshing wire ring and nut and be enclosed within respectively by the two steel tube head cylindricals that connect; The steel tube head place all establishes vertical flange, places rectangular seal (can make of natural or synthetic rubber) between two flange.Traditional flange jointing also has the employing rectangular seal.Though this seal ring is simple and reliable, the life-span is not long.Especially connect steel pipe when very long, the swollen back of two pipe heat two flange all compress to the rectangular seal application of force of centre, transition compression one is to cause " squeezing the crack phenomenon " to make rubber osmosis go into the slit and might leak, the 2nd, the transition compression makes sealing gasket be subjected to permanent destruction and causes seal failure, and joint leaks.
(3) summary of the invention:
This patent is exactly will solve above-mentioned loose joint stainless steel pipe to cause the problem that seal ring destroys with short problem, particularly long pipeline thermal expansion of rectangular seal life-span.Its technological scheme is as follows:
A kind of spacing sealing loose joint thin-wall stainless steel pipe fitting has intermeshing wire ring and nut and is enclosed within two steel pipes 1 that connected and 2 or steel pipe 1 and pipe fitting steel pipe 2 respectively
9, 2
10The termination outer surface; Perhaps connected two outer surface of steel tube fastening flange respectively, and use the flange bolt tightening, it is characterized in that two steel tube heads are equipped with vertical flange 1.1 and 2.1, two flange ask and place the stainless steel annulus 5 of cross section for " worker " font that the grooves on two sides 5.1 of this annulus and 5.2 is asked with flange and is respectively equipped with the O-ring seals 6 that matches; Groove 5.1,5.2 cooperates parameter as follows with O-ring seals: i. seal ring sectional area V1 and the ratio η of groove sectional area V0 are 0.6-0.98, and ii. depth of groove H is 1.2-1.6 a times of seal ring radius R.
A kind of spacing sealing loose joint thin-wall stainless steel pipe fitting has intermeshing wire ring and nut and is enclosed within two steel pipes 1 that connected and 2 or pipe fitting steel pipe 1 respectively
9, 1
10With steel pipe 2 termination outer surfaces, it is characterized in that being established vertical flange 2.1 by a steel pipe 2 that connects, near the spill annular groove 3.2 that the wire ring end face is opened, the O-ring seals 6 that does not match in the groove, another root steel pipe 1 termination is the what wire ring fixedly; Groove 3.2 cooperates parameter as follows with O-ring seals: i. seal ring sectional area V1 and the ratio η of groove sectional area VO are 0.6-0.98, and ii. depth of groove H is 1.2-1.6 a times of seal ring radius R.
Above-mentioned O-ring seals material can adopt rubber or other to be with flexible sealing material.But above-mentioned groove 5.1,5.2,3.2 opening surface coating liquid silicone rubber 6.1 seal.Above-mentioned nut, wire ring, flange can adopt stainless steel, or copper or other metallic material.
This patent beneficial effect: 1. adopt above-mentioned two kinds of groove structures, the pipe fitting of the O-ring seals and the parameter that matches, in the connection procedure that fastening nut and wire ring are installed, two flange press with two grooves, 5.1,5.2 side opening faces or a flange presses with wire ring groove 3.2 sides, and O shape loop material all is embedded in the groove.Heat expansion makes flange can only act on upper and lower side of opening surface or wire ring groove 3.2 sides to the application of force of centre during work, limits the excess compression of heat expansion to sealing with this mode.Seal compression is not varied with temperature and keep the constant scope, make the motive sealing state that forms because of heat expansion become single static seal state, Sealing is not overtired, guarantees its working life.Ii. the opening surface coating liquid silicone rubber at various grooves seals, and makes rubber ring place what secluding air in the groove, locates the vacuum state that what no longer vulcanizes, and also will increase working life.
(4) description of drawings:
Fig. 1 embodiment 1 structural drawing (straight joint diagram)
Fig. 2 embodiment 2 structural drawing (embodiment's 1 structure diagram of what threeway)
Fig. 3 embodiment 3 structural drawing (embodiment's 1 structure diagram of what elbow)
Fig. 4 embodiment 4 structural drawing (straight joint diagram)
A place enlarged view among Fig. 5 embodiment 4
Fig. 6 embodiment 5 structural drawing (straight joint diagram)
Fig. 7 embodiment 6 structural drawing (embodiment's 5 structures diagram of what threeway)
Fig. 8 embodiment 7 structural drawing (embodiment's 5 structures diagram of what elbow)
(5) embodiment:
Embodiment 1: see Fig. 1.(respective rights requires 1 the technological scheme that the nut wire ring is arranged.)
The straight joint structure that connects two stainless steel pipes 1 and 2.If use outside thread 3.1 and internal thread 4.1 intermeshing wire ring 3 and nuts 4 respectively, wire ring 3 is enclosed within and is connect steel pipe 1 termination outer surface, nut 4 is enclosed within and is connect steel pipe 2 termination outer surfaces, establish " worker " font stainless steel annulus 5 between two steel tube heads, the two vertical flange 1.1 and 2.1, and formation grooves on two sides 5.1 and 5.2, place O shape rubber seal 6 in it respectively, it is as follows that it cooperates parameter to select: seal ring sectional area V1 and the ratio η of groove sectional area VO are 0.95.Depth of groove H is 1.5 times of seal ring radius R.Also can seal at the opening surface coating liquid silicone rubber 6.1 of groove 5.1,5.2.When install connecting, the fastening nut wire ring, until can not moving axially, this moment the seal ring full-filling in groove, the two flange what grooves on two sides top and bottom that tightly bond form spacing sealing.
Embodiment 2: see Fig. 2
The what threeway of embodiment's 1 structure.As different from Example 1: one of two steel pipe that connected are that outside quilt connects steel pipe 1, and another root is the steel pipe 2 of pipe fitting threeway 9
9, threeway herein must have three steel pipes that comprise port, connects steel pipe with three velamens of outside respectively and is connected.Each port steel pipe 2 of threeway
9Identical with embodiment 1 with linkage structure and feature between the outside steel pipe 1: promptly the outside is provided with between wire ring 3 and the vertical flange of nut 4, two steel pipes I-shaped stainless steel 5, forms two grooves and O-ring seals 6, and both cooperate parameter: η is 0.95, and H/R is 1.5.
Embodiment 3: see Fig. 3
Embodiment's 1 structure what elbow.As different from Example 1: one of two steel pipe that connected are that outside quilt connects steel pipe 1, and another root is the steel pipe 2 of pipe elbow
10, elbow must have the steel pipe of two ports herein, connects steel pipe with two velamens of outside respectively and is connected.Each port steel pipe 2 of elbow
10Identical with linkage structure and feature between the outside steel pipe 1 with embodiment 1.Here no longer be repeated in this description.
Embodiment 4: see Fig. 4, Fig. 5.(respective rights requires to have in 1 the technological scheme of flange, nut.)
The straight joint structure that connects two stainless steels 1 and 2.Be connected two steel pipes 1 and 2 termination outer surfaces fastening flange 7 respectively, and tighten up with flange bolt 8.(tighten structure with the nut wire ring in this alternate embodiment 1.)。And on end face of flange, offer and vertical flange 1.1 and 2.1 annular grooves that match 7.1.All the other structures are identical with embodiment 1: I-shaped stainless steel 5 is promptly arranged between the vertical flange of two steel pipes, form two groove 5.1,5.2 and O-ring seals 6, both cooperate parameter as follows: the ratio η in cross section is 0.95, and groove depth is 1.5 with the ratio H/R of radius.Also can seal at the opening surface coating liquid silicone rubber 6.1 of groove 5.1,5.2.
Embodiment 5: see Fig. 6.(respective rights requires 2 technological scheme.)
The straight joint structure that connects two stainless steel pipes 1 and 2.If use intermeshing wire ring 3 of outside thread and internal thread and nut 4 respectively.Nut 4 is enclosed within and is connect steel pipe 2 termination outer surfaces, and establishes vertical flange 2.1, near the spill annular groove 3.2 that wire ring 3 end faces are opened, establishes the O shape rubber seal 6 that matches in the groove.It is fixing at 1.2 places and wire ring 3 welding that another velamen connects steel pipe 1 termination.All the other structures are identical with embodiment 1: promptly spill annular groove 3.2 and O-ring seals 6 cooperate the ginseng placate as follows: O shape circle is 0.95 with the ratio η in groove cross section, and groove depth is 1.5 with the ratio H/R of radius.Also can seal at the opening surface coating liquid silicone rubber 6.1 of groove 3.2.Install when connecting, fastening nut, wire ring are until not moving axially, O-ring seals 6 is compressed into groove, when between two steel pipe heat expansion axial force distribution what spill annular grooves, 3.2 open side and the vertical flange 2.1, the swelling pressure power effect of not being heated of the seal ring 6 of compressing into groove forms spacing sealing thus.
Embodiment 6: see Fig. 7.
The what threeway of embodiment's 5 structures.As different from Example 5: one of two steel pipe that connected are that outside quilt connects steel pipe 2, and another root is the steel pipe 1 of pipe fitting threeway 9
9, threeway herein must have three steel pipes that comprise port, connects steel pipe with three velamens of outside respectively and is connected.Each port steel pipe 1 of threeway
9Identical with embodiment 5 with linkage structure and feature between the outside steel pipe 2: promptly the outside is provided with wire ring 3 and nut 4, nut 4 is enclosed within steel pipe 2 termination outer surfaces, and establish vertical flange, near the spill annular groove 3.2 that wire ring 3 end faces are opened, establish the O shape rubber seal 6 that matches in the groove.It is threeway steel pipe 19 that another velamen connects steel pipe, and its termination and wire ring 3 welding are fixing.Spill annular groove 3.2 and O-ring seals 6 cooperate the ginseng placate as follows: the ratio η in O shape circle and groove cross section is 0.95 groove depth and the ratio H/R of radius is 1.5.
Embodiment 7: see Fig. 8.
Embodiment's 5 structures what elbow.As different from Example 5: one of two steel pipe that connected are that outside quilt connects steel pipe 2, and another root is the steel pipe 1 of pipe elbow
10, elbow must have two steel pipes that comprise port herein, connects steel pipe with two velamens of outside respectively and is connected.Each port steel pipe 1 of elbow
10And linkage structure between the outside steel pipe 2 and feature and embodiment 5 are identical.Here no longer be repeated in this description.
Claims (5)
1. a spacing sealing loose joint thin-wall stainless steel pipe fitting has intermeshing wire ring and nut and is enclosed within respectively by two steel pipes (1) and (2) or steel pipe (1) and the pipe fitting steel pipe (2 that connect
9), (2
10) the termination outer surface; Perhaps connected two outer surface of steel tube fastening flange respectively, and use the flange bolt tightening, it is characterized in that two steel tube heads are equipped with vertical flange (1.1) and (2.1), placing the cross section between two flange is the stainless steel annulus (5) of " worker " font, is respectively equipped with the O-ring seals (6) that matches between the grooves on two sides of this annulus (5.1) and (5.2) and flange; Groove (5.1), (5.2) cooperate parameter as follows with O-ring seals: i. seal ring sectional area V1 and the ratio η of groove sectional area V0 are 0.6-0.98, and ii. depth of groove H is 1.2-1.6 a times of seal ring radius R.
2. a spacing sealing loose joint thin-wall stainless steel pipe fitting has intermeshing wire ring and nut and is enclosed within respectively by two steel pipes (1) and (2) or the pipe fitting steel pipe (1 that connect
9), (1
10) and steel pipe (2) termination outer surface; It is characterized in that being established vertical flange (2.1) by a steel pipe (2) that connects, near the spill annular groove (3.2) that wire ring (3) end face is opened, establish the O-ring seals (6) that matches in the groove, another root steel pipe (1) termination is the what wire ring fixedly; Groove (3.2) cooperates parameter as follows with O-ring seals: i. seal ring sectional area V1 and the ratio η of groove sectional area V0 are 0.6-0.98, and ii. depth of groove H is 1.2-1.6 a times of seal ring radius R.
3. by claim 1 or 2 described pipe fittings, it is characterized in that the O-ring seals material adopts rubber or is with flexible sealing material.
4. by claim 1 or 2 described pipe fittings, it is characterized in that groove (5.1), (5.2), (3.2) opening surface scribble liquid silastic (6.1) and seal.
5. by claim 1 or 2 described pipe fittings, it is characterized in that nut, wire ring, flange material adopt stainless steel or copper or metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032778 CN2747436Y (en) | 2004-02-11 | 2004-02-11 | Position limiting sealed active connected thin wall stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032778 CN2747436Y (en) | 2004-02-11 | 2004-02-11 | Position limiting sealed active connected thin wall stainless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747436Y true CN2747436Y (en) | 2005-12-21 |
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ID=35707975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032778 Expired - Fee Related CN2747436Y (en) | 2004-02-11 | 2004-02-11 | Position limiting sealed active connected thin wall stainless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747436Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108730634A (en) * | 2018-04-19 | 2018-11-02 | 中国核电工程有限公司 | A kind of nuclear power heat-shrinkable T bush seal gas device |
-
2004
- 2004-02-11 CN CN 200420032778 patent/CN2747436Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108730634A (en) * | 2018-04-19 | 2018-11-02 | 中国核电工程有限公司 | A kind of nuclear power heat-shrinkable T bush seal gas device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |