CN203585616U - Son and mother sealing ring for connecting smooth metal pipes - Google Patents
Son and mother sealing ring for connecting smooth metal pipes Download PDFInfo
- Publication number
- CN203585616U CN203585616U CN201320784636.0U CN201320784636U CN203585616U CN 203585616 U CN203585616 U CN 203585616U CN 201320784636 U CN201320784636 U CN 201320784636U CN 203585616 U CN203585616 U CN 203585616U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- sealing
- ring
- smooth metal
- pipe joint
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 claims description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 239000003949 liquefied natural gas Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
Images
Abstract
The utility model provides a son and mother sealing ring for connecting smooth metal pipes, and belongs to the technical field of pressure pipeline sealing. The son and mother sealing ring comprises a pipe joint, a screw cap, a son sealing ring and a mother sealing ring, wherein end part openings of the pipe joint are both in a conical shape, during the connection, metal pipes are inserted from the conical openings of the pipe joint, the mother sealing ring, the son sealing ring and the screw cap are sequentially sheathed and placed outside the metal pipe, the screw cap and the pipe joint are fastened through the screw cap pre-tightening, and meanwhile, the son sealing ring is extruded for tightly pressing the mother sealing ring, so the mother sealing ring tightly presses the surface of the conical opening of the pipe joint for forming two-stage sealing, and the reliable connection of the smooth metal pipes is finally realized. The son and mother sealing ring has the advantages that the connection and sealing of the smooth metal pipes without a flange or a ball head is realized, the dismounting is convenient, the repeated use can be realized, and the son and mother sealing ring is particularly suitable for the connection and sealing of liquid nitrogen, liquid oxygen and LNG (liquefied natural gas) cylinder accessories.
Description
Technical field
The utility model belongs to pressure piping technical field of sealing technology, is specifically related to the composite seal ring that a kind of smooth metal pipe connects use.
Background technique
The connection of pipeline is sealed with the modes such as joint seal of flanges, the seal with screwed joint of bulb cone match, welded joints seal.Joint seal of flanges and bulb cone match sealing convenient disassembly, but it requires metal tube connecting end must have flange plate or bulb, and smooth metal tube can not be realized above-mentioned Placement.Although can realizing smooth metal pipe, welded seal connects sealing, its non-dismountable reusing.
Model utility content
For the defect of prior art, the utility model provides a kind of smooth metal effective composite seal ring, and its object is, realizes the connection sealing without the smooth metal pipeline of bulb without flange plate, for convenience detach, reusable.
Smooth metal pipe connects a composite seal ring for use, comprises pipe joint, nut, sub-sealing-ring and female seal ring; The open-ended of pipe joint is taper, during connection, metallic conduit inserts from the taper mouth of pipe joint, the outside of metallic conduit is overlapped successively and is placed with female seal ring, sub-sealing-ring and nut, by nut pretension, make between nut and pipe joint fasteningly, push sub-sealing-ring simultaneously and compress female seal ring, make female seal ring press pipe joint cone shape hole surface, the sealing of formation two-stage, finally realizes the reliable connection of smooth metal pipeline.
Further, described sub-sealing-ring is wedge-shaped structure, and its end face contacting with nut is 45 ° of chamferings.
Further, described nut inner chamber is processed as 90 ° of conical surfaces, during assembling, coordinate with 45 ° of chamferings of described sub-sealing-ring, while being used for assembling, play the guiding role, the pressure of 45° angle surface of contact is resolved into axial force and radial force simultaneously, radial force makes sub-sealing-ring that micro-strain radially occur, and presses metal tube.
Further, the unthreaded hole diameter of described sub-sealing-ring and female seal ring is pressed
tolerance design.
Further, the conical surface angle of described pipe joint is 40 ° ± 3 ', two conical surface angles of described female seal ring are respectively 40.3 ° ± 3 ' and 60 ° ± 3 ', the conical surface angle of described sub-sealing-ring is 60.3 ° ± 3 ' and 60 ° ± 3 ', be conducive to distortion and form sealing strip.
Further, described female seal ring is wedge shape part, and position, intermediate portion is processed with the circular groove that a cross section is less than semicircle.
Further, described smooth metal pipe is not more than 0.8 in the position outer surface degree of finish that composite seal ring is installed.
Further, described pipe joint, nut are selected lead brass or stainless steel, and sub-sealing-ring and female seal ring are selected red copper.
Technique effect of the present utility model is embodied in:
The utility model is fastening by pipe joint and nut, and extruding sub-sealing-ring compresses female seal ring, and female seal ring compresses the pipe joint conical surface, makes seal ring and smooth metal pipe all produce distortion, smooth metal pipe is fastenedly connected, and forms two seals.Seal ring forms sealing with female seal ring in the effect of relative extruding, this sealing can form two seals, and sealing is reliable, is applicable to the connection sealing of smooth metal pipe, and convenient disassembly is reusable, be particularly suited for the connection sealing of liquid nitrogen, liquid oxygen, LNG cylinder accessories.
Further, sub-sealing-ring is designed to wedge-shaped structure, becomes cylindrical and gains in strength, 45 ° of chamferings of end face design with nut abutting end.Female seal ring is designed to the wedge shape part that wall thickness is thinner, the circular groove that one cross section is less than semicircle is designed in intermediate portion, can increase the amount of deformation of female seal ring, make female seal ring produce large deformation when being subject to sub-sealing-ring and nut extruding, to reach the reliable sealing of smooth metal pipe.Sub-sealing-ring and female seal ring unthreaded hole diameter are pressed
tolerance design, guaranteed assembling and be connected sealing.
Further, the key Design of nut is at Gewindefreistiche 90 ° of conical surfaces together with the design of unthreaded hole connection part, during assembling, coordinate with 45 ° of chamferings of sub-sealing-ring, while its objective is assembling, play the guiding role, the pressure of 45° angle surface of contact is resolved into axial force and radial force simultaneously, radial force makes sub-sealing-ring that micro-strain radially occur, with metal tube locking.
Further, in order to be applicable to the connection sealing of-196 ℃ of downforce pipelines, on material is selected, pipe joint, smooth metal pipe, nut can be selected lead brass and stainless steel, before selecting the moulding of stainless steel material requirement Finishing Parts Machining, must do cryogenic treatment, composite seal ring is selected red copper.Lead brass and stainless steel are corrosion-resistant, good mechanical properties, have good cryogenic property, are applicable to doing union piece, red copper is corrosion-resistant, normal temperature and low temperature ductility better, be applicable to doing low temperature seal part.
Further, smooth metal pipe requires to ask outer surface degree of finish to be not more than 0.8 in the position that composite seal ring is installed, and this is that high degree of finish can guarantee to get final product reliable sealing in the situation that of composite seal ring small deformation because flow of metal is relatively difficult.
Accompanying drawing explanation
Fig. 1 is seal arrangement schematic diagram;
Fig. 2 is pipe joint structure schematic diagram in the utility model;
Fig. 3 is the utility model neutron ring structure schematic diagram;
Fig. 4 is female ring structure schematic diagram in the utility model;
Fig. 5 is the utility model nut structure schematic diagram;
Mark in figure: pipe joint 1, smooth metal pipe 2, nut 3, sub-sealing-ring 4 and female seal ring 5.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, composite seal ring is comprised of pipe joint 1, nut 3, sub-sealing-ring 4 and female seal ring 5.The open-ended of pipe joint 1 is taper, during connection, metallic conduit inserts from the taper mouth of pipe joint 1, the outside of metallic conduit is overlapped successively and is placed with female seal ring 5, sub-sealing-ring 4 and nut 3, by nut 3 pretensions, make between nut 3 and pipe joint 1 fasteningly, push sub-sealing-ring 4 simultaneously and compress female seal ring 5, make female seal ring 5 press pipe joint cone shape hole surface, the sealing of formation two-stage, finally realizes the reliable connection of smooth metal pipeline.
Pipe joint, sub-sealing-ring and female seal ring design different conical surface angles, by nut threaded pre-tightening, sub-sealing-ring flat end face are applied to axial pressure, between the different conical surfaces, deform, and form sealing strip or sealing surface.
As shown in Figure 3, sub-sealing-ring 4 is designed to wedge-shaped structure, becomes cylindrical and gains in strength, 45 ° of chamferings of end face design with nut 3 abutting ends.Female seal ring 5 is designed to the wedge shape part that wall thickness is thinner, the circular groove (see figure 4) that one cross section is less than semicircle is designed in intermediate portion, can increase the amount of deformation of female seal ring, make female seal ring produce large deformation when being subject to sub-sealing-ring and nut extruding, to reach the reliable sealing of smooth metal pipe.Sub-sealing-ring and female seal ring unthreaded hole diameter are pressed
tolerance design, guaranteed assembling and be connected sealing.
Described nut 3 is the parts that apply pretightening force to composite seal ring, acts on six sides of nut make pipe joint, composite seal ring and metal tube locking by torque spanner, and stroke sealing strip reaches sealing.See Fig. 5, the key Design of nut is at Gewindefreistiche 90 ° of conical surfaces together with the design of unthreaded hole connection part, during assembling, coordinate with 45 ° of chamferings of sub-sealing-ring, while its objective is assembling, play the guiding role, the pressure of 45° angle surface of contact is resolved into axial force and radial force simultaneously, radial force makes sub-sealing-ring that micro-strain radially occur, with metal tube locking.
In order to be applicable to the sealing of-196 ℃ of downforce pipelines, on material is selected, pipe joint, smooth metal pipe, nut can be selected lead brass and stainless steel, must do cryogenic treatment before selecting the moulding of stainless steel material requirement Finishing Parts Machining, and composite seal ring is selected red copper.
Installation process of the present utility model is as follows:
(1) check, clean all parts;
(2) nut hand of spiral is enclosed within on smooth metal pipe outwardly;
(3) successively sub-sealing-ring and female seal ring are enclosed within on smooth metal pipe, both conical surfaces all outwardly;
(4) first by smooth metal pipe Inserting Tube joint, then by female seal ring and sub-sealing-ring moves to the pipe joint conical surface is combined position, then turn nut tight to band, finally pipe joint is fixed, apply 10Nm moment of torsion tightening nuts with torque spanner.
(5) if when need to change pipe joint or checking inner chamber fault, nut is twisted off, change or check complete direct assembling.
Claims (8)
1. smooth metal pipe connects a composite seal ring for use, it is characterized in that, comprises pipe joint (1), nut (3), sub-sealing-ring (4) and female seal ring (5); The open-ended of pipe joint (1) is taper, during connection, metallic conduit inserts from the taper mouth of pipe joint (1), the outside of metallic conduit is overlapped successively and is placed with female seal ring (5), sub-sealing-ring (4) and nut (3), by nut (3) pretension, make between nut (3) and pipe joint (1) fastening, push sub-sealing-ring (4) simultaneously and compress female seal ring (5), make female seal ring (5) press pipe joint cone shape hole surface, the sealing of formation two-stage, finally realizes the reliable connection of smooth metal pipeline.
2. smooth metal pipe according to claim 1 connects the composite seal ring of use, it is characterized in that, described sub-sealing-ring (4) is wedge-shaped structure, and its end face contacting with nut (3) is 45 ° of chamferings.
3. smooth metal pipe according to claim 2 connects the composite seal ring of use, it is characterized in that, described nut (3) inner chamber is processed as 90 ° of conical surfaces, during assembling, coordinate with 45 ° of chamferings of described sub-sealing-ring (4), while being used for assembling, play the guiding role, the pressure of 45° angle surface of contact is resolved into axial force and radial force, radial force makes sub-sealing-ring (4) that micro-strain radially occur to press metal tube simultaneously.
4. the composite seal ring that connects use according to the smooth metal pipe described in claim 1 or 2 or 3, is characterized in that, the unthreaded hole diameter of described sub-sealing-ring (4) and female seal ring (5) is pressed
tolerance design.
5. according to the smooth metal pipe described in claim 1 or 2 or 3, connect the composite seal ring of use, it is characterized in that, the conical surface angle of described pipe joint (1) is 40 ° ± 3 ', two conical surface angles of described female seal ring (5) are respectively 40.3 ° ± 3 ' and 60 ° ± 3 ', the conical surface angle of described sub-sealing-ring (4) is 60.3 ° ± 3 ' and 60 ° ± 3 ', be conducive to distortion and form sealing strip.
6. the composite seal ring that connects use according to the smooth metal pipe described in claim 1 or 2 or 3, is characterized in that, described female seal ring (5) is wedge shape part, and position, intermediate portion is processed with the circular groove that a cross section is less than semicircle.
7. the composite seal ring that connects use according to the smooth metal pipe described in claim 1 or 2 or 3, is characterized in that, described smooth metal pipe is not more than 0.8 in the position outer surface degree of finish that son, female seal ring are installed.
8. the composite seal ring that connects use according to the smooth metal pipe described in claim 1 or 2 or 3, is characterized in that, described pipe joint (1) and nut (30) are selected lead brass or stainless steel, and described sub-sealing-ring (4) and female seal ring (5) are selected red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784636.0U CN203585616U (en) | 2013-12-02 | 2013-12-02 | Son and mother sealing ring for connecting smooth metal pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784636.0U CN203585616U (en) | 2013-12-02 | 2013-12-02 | Son and mother sealing ring for connecting smooth metal pipes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585616U true CN203585616U (en) | 2014-05-07 |
Family
ID=50583531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784636.0U Expired - Lifetime CN203585616U (en) | 2013-12-02 | 2013-12-02 | Son and mother sealing ring for connecting smooth metal pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585616U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737250A (en) * | 2016-03-31 | 2016-07-06 | 安徽汇展热交换系统股份有限公司 | Vent pipe assembly for radiator |
| CN106644286A (en) * | 2016-12-23 | 2017-05-10 | 湖北三江航天红峰控制有限公司 | Low-temperature stop valve sealing fixing device |
| CN109876656A (en) * | 2019-03-28 | 2019-06-14 | 山东鑫澳节能环保科技有限公司 | Straight barrel type cartridge end sealing device, dedusting denitrification apparatus and its assembly method |
| CN111238989A (en) * | 2020-02-25 | 2020-06-05 | 西南石油大学 | Gravimetric method high temperature high pressure isothermal adsorption measuring device |
| CN114719111A (en) * | 2022-06-08 | 2022-07-08 | 中国航发四川燃气涡轮研究院 | Force-bearing oil supply structure behind aircraft engine turbine |
| CN114992414A (en) * | 2022-06-13 | 2022-09-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Hard tube cutting ferrule connecting device |
-
2013
- 2013-12-02 CN CN201320784636.0U patent/CN203585616U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737250A (en) * | 2016-03-31 | 2016-07-06 | 安徽汇展热交换系统股份有限公司 | Vent pipe assembly for radiator |
| CN106644286A (en) * | 2016-12-23 | 2017-05-10 | 湖北三江航天红峰控制有限公司 | Low-temperature stop valve sealing fixing device |
| CN106644286B (en) * | 2016-12-23 | 2019-01-18 | 湖北三江航天红峰控制有限公司 | A kind of cryogenic globe valve sealed fixing device |
| CN109876656A (en) * | 2019-03-28 | 2019-06-14 | 山东鑫澳节能环保科技有限公司 | Straight barrel type cartridge end sealing device, dedusting denitrification apparatus and its assembly method |
| CN111238989A (en) * | 2020-02-25 | 2020-06-05 | 西南石油大学 | Gravimetric method high temperature high pressure isothermal adsorption measuring device |
| CN114719111A (en) * | 2022-06-08 | 2022-07-08 | 中国航发四川燃气涡轮研究院 | Force-bearing oil supply structure behind aircraft engine turbine |
| CN114992414A (en) * | 2022-06-13 | 2022-09-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Hard tube cutting ferrule connecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |