CN201209718Y - Tube end structure for enhancing sealing performance and assembling performance - Google Patents
Tube end structure for enhancing sealing performance and assembling performance Download PDFInfo
- Publication number
- CN201209718Y CN201209718Y CNU2008200673980U CN200820067398U CN201209718Y CN 201209718 Y CN201209718 Y CN 201209718Y CN U2008200673980 U CNU2008200673980 U CN U2008200673980U CN 200820067398 U CN200820067398 U CN 200820067398U CN 201209718 Y CN201209718 Y CN 201209718Y
- Authority
- CN
- China
- Prior art keywords
- union nut
- pipe end
- end structure
- diameter
- pipe
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 14
- 230000002708 enhancing effect Effects 0.000 title 1
- 238000010276 construction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 235000002991 Coptis groenlandica Nutrition 0.000 description 2
- 244000247747 Coptis groenlandica Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 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
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Joints With Pressure Members (AREA)
Abstract
The utility model provides a pipe end structure which can improve the sealability and the assembling capability. The pipe end structure comprises a bell-mouthed pipe body and a union nut. The pipe end structure is characterized in that the back part of the bell mouth of the pipe body is provided with a guide segment which is matched with the bottom hole of the union nut; the diameter of the guide segment is larger than the diameter of the pipe body, and the length of the guide segment is at least 50 percent of the length of the bottom hole of the union nut. The design structure of the pipe end structure is improved; the axiality of the inner tapered surface of the union nut, the bell mouth and the joint are ensured during the assembly; the sealing reliability is improved; and firmer sealability is ensured. The pipe end structure solves the problems of ineffective sealing and difficult assembly in practical application.
Description
Technical field
The utility model relates to the connection area of transfer conduit, especially a kind of pipe end constructions that improves sealability and assembling capacity.
Background technique
Existing pipe end connects sealing technique, be to be that the union nut of taper-face ring is connected with joint screw thread by the pipe end bottom interior surface, its taper-face ring with tube-end forming but not the welded horn mouth and the joint conical surface compress, between body and joint, form sealing strip, realize to connect function with sealing.In actual applications, some bending points are arranged on the body usually, because there is certain curved ellipticity in bending, therefore the union nut bottom diameter must be greater than body bent flat part position maximum diameter, just can prolong body and move freely satisfied mounting or dismounting needs, form and the bigger gap of body simultaneously, disalignment when this gap causes the pipe end horn mouth and the joint conical surface to be fitted easily, can not form complete sealing surface, seal failure often occur.Moreover, union nut internal surface taper-face ring and horn mouth disalignment are also often caused in this gap, screw in the compaction process at union nut and joint, two sealing surfaces of the horn mouth and the joint conical surface are not to prolong axially progressively near fitting, but form local contact, cause the frictional force of the outer side-friction force of union nut and horn mouth on the one hand greater than the horn mouth internal surface and the joint conical surface, cause body when union nut screws, the body transfer, producing in enormous quantities in the assembling application, had a strong impact on efficiency of assembling such as automobile manufacture industry; Two sealing surfaces contact or because transfer causes the friction of sealing surface, sealing surface are damaged in the part earlier on the other hand, cause losing efficacy.
Summary of the invention
The purpose of this utility model is in order to connect in the seal form at pipe end, by improving project organization, union nut taper-face ring and horn mouth and joint three's coaxality in the raising assembly process, thereby raising sealing reliability and assembling capacity.
For this reason, the technical solution of the utility model is: a kind of pipe end constructions that improves sealability and assembling capacity, include bell-mouthed body, union nut, it is characterized in that: the horn mouth rear portion of body is provided with a guide section, cooperates with the base apertures of union nut.
Improvement to such scheme is: described guide section diameter is greater than pipe diameter, and length is at least 50% of union nut base apertures length.
Beneficial effect:
The utility model is provided with guide section at body horn mouth rear portion, cooperates with the base apertures of union nut; The guide section diameter is greater than pipe diameter, and length is at least 50% of union nut base apertures length, can guarantee the coaxality of horn mouth and joint effectively, can guarantee that sealability is more firm when assembling.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an application schematic representation of the present utility model.
Embodiment
As shown in Figure 1, (this guide section diameter is greater than pipe diameter for union nut 2 base apertures and pipe end belled tube-end horn mouth rear portion guide section 6 employing Spielpassung among the figure, length is greater than 50% of union nut base apertures length, less than the length of horn mouth root to crooked starting point).Nut can prolong axially at guide section and is free to slide, but can not Free Slosh.When union nut 2 and joint 1 screw thread begin to screw, pipe end guide section 6 progressively enters the union nut bottom outlet, pipe end begins to be directed to, and makes pipe end horn mouth sealing surface 7 prolong coupling head 1 bottom and compresses the conical surface 4, union nut 2, horn mouth sealing surface 7 assembled base fiducial axis 8 and move closer to final applying and compress.Wherein guide section 6 is established fillet R with horn mouth outside transition root, by appropriate design R value and union nut conical surface chamfering A value, guarantee that the horn mouth root does not form local the contact with union nut, thereby when union nut 2 and joint 1 are tightened, frictional force between union nut and the horn mouth is less than the frictional force between horn mouth and the joint 1, avoid body 9 in rundown process around reference axis 8 transfers.Guide section 6 diameters are greater than pipe diameter, nut is return after, its bottom outlet and pipe diameter form gap 2h, but this compensated bend position, gap 5 make nut easily prolong the body axis and move through because the pipe diameter of curved bandlet is local increases, convenient for assembly.The enforcement of the utility model scheme preferably resolves seal failure in actual applications, assembles difficult problem.
Claims (2)
1, a kind of pipe end constructions that improves sealability and assembling capacity includes bell-mouthed body, union nut, it is characterized in that: the horn mouth rear portion at body is provided with a guide section, cooperates with the base apertures of union nut.
2, a kind of pipe end constructions that improves sealability and assembling capacity according to claim 1 is characterized in that: described guide section diameter is greater than pipe diameter, and length is at least 50% of union nut base apertures length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200673980U CN201209718Y (en) | 2008-05-20 | 2008-05-20 | Tube end structure for enhancing sealing performance and assembling performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200673980U CN201209718Y (en) | 2008-05-20 | 2008-05-20 | Tube end structure for enhancing sealing performance and assembling performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209718Y true CN201209718Y (en) | 2009-03-18 |
Family
ID=40480454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200673980U Expired - Fee Related CN201209718Y (en) | 2008-05-20 | 2008-05-20 | Tube end structure for enhancing sealing performance and assembling performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209718Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269303A (en) * | 2010-06-02 | 2011-12-07 | 北汽福田汽车股份有限公司 | Automobile braking oil tube |
| CN103672184A (en) * | 2012-09-12 | 2014-03-26 | 芜湖源大管业有限公司 | Air conditioner connecting pipe and manufacturing and using method thereof |
| CN110496725A (en) * | 2019-08-15 | 2019-11-26 | 中国人民解放军第五七二一工厂 | A kind of catheter end head nut protection tool |
-
2008
- 2008-05-20 CN CNU2008200673980U patent/CN201209718Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269303A (en) * | 2010-06-02 | 2011-12-07 | 北汽福田汽车股份有限公司 | Automobile braking oil tube |
| CN103672184A (en) * | 2012-09-12 | 2014-03-26 | 芜湖源大管业有限公司 | Air conditioner connecting pipe and manufacturing and using method thereof |
| CN110496725A (en) * | 2019-08-15 | 2019-11-26 | 中国人民解放军第五七二一工厂 | A kind of catheter end head nut protection tool |
| CN110496725B (en) * | 2019-08-15 | 2024-02-27 | 中国人民解放军第五七二一工厂 | Catheter tip nut protection tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201209718Y (en) | Tube end structure for enhancing sealing performance and assembling performance | |
| CN204323330U (en) | A kind of air brake hose nipple assembly | |
| CN103591402A (en) | Novel two-ferrule tube fitting | |
| CN101275733B (en) | Clip convex type pipeline joint component | |
| CN201434163Y (en) | Pipeline connecting piece for stainless steel thin-walled pipe | |
| CN104455815A (en) | Tapered sealing pipe connector for excavator | |
| CN203614944U (en) | Compression thread bonding type pipe connecting piece | |
| CN219082539U (en) | High-voltage joint assembly | |
| CN2594593Y (en) | Sealed pipe joint without screw thread | |
| CN207687530U (en) | A kind of mechanical sleeves | |
| CN215805947U (en) | Multi-section welding product and damper | |
| CN201218380Y (en) | Fastener type connection elbow | |
| CN211779608U (en) | Accessory that conversion is moulded to butt fusion formula steel | |
| CN203560626U (en) | Novel pipe joint with double ferrules | |
| CN201074482Y (en) | Connection structure for sealing pipeline of circular ring and conus | |
| CN202360928U (en) | Press fitting adhered type pipeline connector of stainless steel thin walled pipe | |
| CN201141485Y (en) | High pressure oil pipe line structure of direction converter | |
| CN202001756U (en) | Flexible connecting pipe fitting | |
| CN201090855Y (en) | Inner lining clamping press composite tube connecting pieces | |
| CN219888925U (en) | Corrugated pipe structure for improving axial strength of corrugated pipe | |
| CN2505677Y (en) | Pipe joint with sleeve and socket | |
| CN222977721U (en) | A pipe plug specially used for PE corrugated pipe | |
| CN2499672Y (en) | Aluminium plastic composite pipeline joint | |
| CN223498985U (en) | Bundy pipe joint with good sealing performance | |
| CN219530169U (en) | EPDM pipe with high heat preservation performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20120520 |