CN103133791A - Welding-free metal bellows - Google Patents
Welding-free metal bellows Download PDFInfo
- Publication number
- CN103133791A CN103133791A CN 201310047904 CN201310047904A CN103133791A CN 103133791 A CN103133791 A CN 103133791A CN 201310047904 CN201310047904 CN 201310047904 CN 201310047904 A CN201310047904 A CN 201310047904A CN 103133791 A CN103133791 A CN 103133791A
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- bellows
- joint
- net
- female connector
- connector
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Abstract
The invention relates to a welding-free metal bellows which comprises a bellows body, a net sleeve and a connector. The net sleeve is wrapped on the outer surface of the bellows body, an end of the bellows body is connected with the connector and provided with a connecting sleeve, threads are arranged on the inner surface of the connecting sleeve, one end of the connector is provided with threads matched with the connecting sleeve, the bellows body is connected with the connecting sleeve in sealing mode, and the connecting sleeve is connected with the connector through the threads. The connecting sleeve is wrapped on the end of the net sleeve, a sheath is arranged on the outer surface of the net sleeve, the sheath is pressed by outer force and deformed to connect the net sleeve, the connecting sleeve and the bellows body to form an integrated structure, and a stop nut is sleeved on the outer surface of the connector. Compared with the prior art, the end of the bellows body uses the connecting sleeve to be connected with the connector through the threads, welding process between the bellows body and the connector is omitted, a technical requirement of operating workers is reduced, and manufacture difficulty is reduced. Simultaneously, a procedure of turning or polishing on a welding face is omitted, production efficiency is high, and obtained products are reliable in connection and attractive in appearance.
Description
Technical field
The present invention relates to metal bellows, adopt the welded metal bellow of exempting from that is threaded between especially a kind of bellows and joint.
Background technique
Existing metal bellows generally comprises bellows, net and joint, and the outer surface of bellows is enclosed with metal net cover, and the end of bellows is provided with joint.At present, be all to adopt to be welded to connect usually between the end of existing bellows and joint, and then adopt the method for turning processing or polishing to process weld.This processing technology is comparatively complicated, welding operation is higher to workman's technical requirements, manufacture difficulty is large, even welding operation reaches standard fully, also need face of weld is carried out turning, polishing or polishing, the product design that obtains so still phenomenon attractive in appearance not can occur, and the material of face of weld changes, and easily gets rusty.
Summary of the invention
For the deficiency of above existing metal bellows, the purpose of this invention is to provide and adopt the welded metal bellow of exempting from that is threaded between a kind of bellows and joint.
The objective of the invention is by realizing by the following technical solutions:
Exempt from welded metal bellow, comprise bellows, net and joint, the outer surface of described bellows is enclosed with net, the end of bellows is connected with joint, the end of described bellows is provided with female connector, and the internal surface of female connector is provided with screw thread, and the outer surface of described joint one end is provided with the screw thread suitable with described female connector, described bellows and female connector are tightly connected, and female connector is connected and fixes with described joint by screw thread.
As the preferred technical solution of the present invention, described female connector is wrapped in the end of net, and the outer surface of net end is provided with sheath, after described sheath is out of shape by external force pressure, net and female connector and bellows is connected to form overall structure.
As the preferred technical solution of the present invention, described bellows and female connector are welded to connect.
As the preferred technical solution of the present invention, it is threaded end that described joint is established a threaded end, the other end is connecting end, the external diameter of described joint screw thread end is less than the external diameter of its connecting end, the outer surface of joint is arranged with the seam nut, the minimum-value aperture of described seam nut is greater than the external diameter of described joint screw thread end, less than the external diameter of joint connecting end.
As the preferred technical solution of the present invention, the end face of described joint connecting end is made as spheric structure.
As the preferred technical solution of the present invention, the end face of described joint connecting end is made as plane or cone structure.
The invention has the beneficial effects as follows: with respect to prior art, corrugated tube end of the present invention adopts female connector to be connected with joint by screw thread, removed the welding procedure between bellows and joint from, thereby the technical requirements to the operator reduces, and manufacture difficulty reduces, and has removed from simultaneously face of weld is carried out turning, polishing or polishing, manufacturing efficiency improves, the product that obtains not only connects reliably, and beautiful shape, is difficult for getting rusty.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is structural representation of the present invention;
Fig. 2 is fractionation structural representation of the present invention;
Fig. 3 is the schematic diagram that joint end face of the present invention is plane structure;
Fig. 4 is the schematic diagram that joint end face of the present invention is cone structure.
In figure: 1, bellows, 2, net, 3, sheath, 4, female connector, 5, the seam nut, 6, joint, 7, the spheric structure of joint end face, 8, the plane structure of joint end face, 9, the cone structure of joint end face.Embodiment
As depicted in figs. 1 and 2, exempt from welded metal bellow, comprise bellows 1, net 2 and joint 6, the outer surface of bellows 1 is enclosed with net 2, the end of bellows 1 is provided with female connector 4, and the internal surface of female connector 4 is provided with screw thread, and the outer surface of joint 6 one ends is provided with the screw thread suitable with female connector 4 internal surface screw threads, described bellows 1 is tightly connected with female connector 4, and female connector 4 is connected and fixes with joint 6 by screw thread.
In the present embodiment, described female connector 4 is wrapped in the end of net 2, and the outer surface of net 2 ends is provided with sheath 3, after sheath 3 is out of shape by external force pressure, net 2 and female connector 4 and bellows 1 is connected to form overall structure.Described bellows 1 is welded to connect with female connector 4, it is threaded end that joint 6 is established a threaded end, the other end is connecting end, the external diameter of described joint 6 threaded end is less than the external diameter of its connecting end, the outer surface of joint 6 is arranged with seam nut 5, the minimum-value aperture of seam nut 5 is greater than the external diameter of joint 6 threaded end, less than the external diameter of joint 6 connecting ends.The end face of the present embodiment joint 6 connecting ends is made as spheric structure 7.As mode of execution preferably, as shown in Figure 3 and Figure 4, the end face of described joint 6 connecting ends also can be made as plane structure 8 or cone structure 9, in order to be applicable to different Placements.
Claims (6)
1. exempt from welded metal bellow for one kind, comprise bellows, net and joint, the outer surface of described bellows is enclosed with net, the end of bellows is connected with joint, it is characterized in that: the end of described bellows is provided with female connector, and the internal surface of female connector is provided with screw thread, and the outer surface of described joint one end is provided with the screw thread suitable with described female connector, described bellows and female connector are tightly connected, and female connector is connected and fixes with described joint by screw thread.
2. the welded metal bellow of exempting from according to claim 1, it is characterized in that: described female connector is wrapped in the end of net, the outer surface of net end is provided with sheath, after described sheath is out of shape by external force pressure, net and female connector and bellows is connected to form overall structure.
3. the welded metal bellow of exempting from according to claim 2, it is characterized in that: described bellows and female connector are welded to connect.
4. the welded metal bellow of exempting from according to claim 1 and 2, it is characterized in that: it is threaded end that described joint is established a threaded end, the other end is connecting end, the external diameter of described joint screw thread end is less than the external diameter of its connecting end, the outer surface of joint is arranged with the seam nut, the minimum-value aperture of described seam nut is greater than the external diameter of described joint screw thread end, less than the external diameter of joint connecting end.
5. the welded metal bellow of exempting from according to claim 4, it is characterized in that: the end face of described joint connecting end is made as spheric structure.
6. the welded metal bellow of exempting from according to claim 4, it is characterized in that: the end face of described joint connecting end is made as plane or cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310047904 CN103133791A (en) | 2013-02-06 | 2013-02-06 | Welding-free metal bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310047904 CN103133791A (en) | 2013-02-06 | 2013-02-06 | Welding-free metal bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103133791A true CN103133791A (en) | 2013-06-05 |
Family
ID=48494008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310047904 Pending CN103133791A (en) | 2013-02-06 | 2013-02-06 | Welding-free metal bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103133791A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671081A (en) * | 2019-10-12 | 2020-01-10 | 中国石油集团渤海石油装备制造有限公司石油机械厂 | Perforating gun for horizontal well |
-
2013
- 2013-02-06 CN CN 201310047904 patent/CN103133791A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671081A (en) * | 2019-10-12 | 2020-01-10 | 中国石油集团渤海石油装备制造有限公司石油机械厂 | Perforating gun for horizontal well |
| CN110671081B (en) * | 2019-10-12 | 2022-06-07 | 中国石油天然气集团有限公司 | Perforating gun for horizontal well |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |