CN202521102U - Low-pressure hammering union three-piece set - Google Patents
Low-pressure hammering union three-piece set Download PDFInfo
- Publication number
- CN202521102U CN202521102U CN201220021691XU CN201220021691U CN202521102U CN 202521102 U CN202521102 U CN 202521102U CN 201220021691X U CN201220021691X U CN 201220021691XU CN 201220021691 U CN201220021691 U CN 201220021691U CN 202521102 U CN202521102 U CN 202521102U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- low
- union
- pressure
- piece set
- 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 abstract description 17
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a low-pressure hammering union three-piece set for petroleum drilling and production. The low-pressure hammering union three-piece set comprises a male joint, a connecting female joint, an O-shaped sealing ring and a connecting ring. The low-pressure hammering union three-piece set is characterized in that the position of the male joint contacted with the sealing ring is provided with an arc-shaped groove structure; the position of the connecting nut contacted with the sealing ring is provided with a conical surface structure, the outward deformation space of the sealing ring is reduced and the inward extrusion force of the connecting nut to the sealing ring is increased, so that the inward deformation amount of the sealing ring is increased, and the sealing effect of the sealing ring with the male joint and the connecting pipe is improved; and the sealing is reliable only by hammering the female joint with a convex-wing structure for several times with a small hammer, and the sealing pressure can be 2.5MPa. The low-pressure hammering union three-piece set disclosed by the utility model has the advantages that the installation and the disassembly are convenient and the service life of the sealing ring is long.
Description
Technical field:
The present invention relates to connecting head, be used on the mud cleaning system of petroleum drilling operation.
Background technique:
The low-pressure line rapid pipe joint that is used in petroleum drilling operation at present has pneumatic tyre formula jointing, not with the forms such as hammering type jointing of pressure ring.The deficiency of pneumatic tyre formula jointing is that pneumatic tyre is prone to explosion or gas leakage, causes the pipeline seal failure, and changes the pneumatic tyre difficulty, and the mud loss is big.Distortion is little if band pressure ring, the shortcoming that has the hammering type jointing of pressure ring are seal ring, and material is wasteful, and sealing load is low.The shortcoming with the hammering type jointing of pressure ring is not the cone structure that in tool joint pin, has designed horn shape, when attaching nut's precession, and the seal ring breakage of can sliding, unclamping maybe seal failure when reusing.
Summary of the invention:
The object of the invention provides that a kind of dismounting is convenient, reliable sealing low-pressure line fast connecting joint.
In order to reach as above purpose, the present invention takes following technological scheme: the Contact Seal ring place of tool joint pin is provided with the arcuate furrow structure, is provided with cone structure at attaching nut's Contact Seal ring place.
The further technological scheme of the present invention is: the seal ring between arcuate furrow structure and the cone structure is " O " RunddichtringO.
The further technological scheme of the present invention is: the outer surface of the radian of said arcuate furrow structure and " O " RunddichtringO can tightly suit.
The further technological scheme of the present invention is: said attaching nut's cone structure can tightly suit with the outer surface of " O " RunddichtringO, and frictional force is little.
Further technological scheme of the present invention is: said attaching nut has the protruding wing structure that can be knocked.
Adopt the as above vertical union three-piece of hitting of low pressure of technological scheme; Has following beneficial effect: be applicable on the mud cleaning system of petroleum drilling operation, because of seal ring is big to internal strain, so its sealing is reliable; Sealing life is long; Sealing load is big, dismounting is convenient, can reduce the mud loss, improves installing/dismounting efficient.
Description of drawings:
In order to further specify the present invention, further describe below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of invention;
Fig. 2 is the local I enlarged view;
Wherein: 1. tool joint pin; 2. attaching nut; 3. " O " RunddichtringO; 4. connecting tube; 5. cone structure; 6. arcuate furrow structure.
Embodiment:
As depicted in figs. 1 and 2, fast connecting joint of the present invention comprises illustrated tool joint pin 1, attaching nut 2, " O " RunddichtringO 3.Its principle is an end and the container or the steel pipe welding of tool joint pin 1, and attaching nut 2 is connected with tool joint pin 1 through screw thread, during attaching nut's 2 precessions; Extruding " O " RunddichtringO 3; It is produced to internal strain, compress connecting tube 4, thereby reach being tightly connected of news of tool joint pin 1 and connecting tube 4.
The outer surface of the radian of said tool joint pin 1 arcuate furrow structure 6 and " O " RunddichtringO 3 can tightly suit, and has therefore reduced the outside deformation space of seal ring; Said attaching nut's 2 cone structure 5 has increased the inside extruding force of attaching nut to seal ring, thereby increases " O " RunddichtringO 3 to internal strain, has improved the sealing effect of seal ring and connecting tube; And seal ring can not push slip, and the seal ring damage probability reduces, and the life-span prolongs.
Said attaching nut 2 has the protruding wing structure that can be knocked, and the attaching nut is screwed reliably.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. low pressure is hung down and is hit the union three-piece, and it is characterized in that: the Contact Seal ring place of tool joint pin (1) is provided with arcuate furrow structure (6), and there is cone structure (5) at attaching nut's (2) Contact Seal ring place.
2. low pressure as claimed in claim 1 is hung down and is hit the union three-piece, and it is characterized in that: the seal ring between arcuate furrow structure (6) and the cone structure (5) is " O " RunddichtringO (3).
3. low pressure as claimed in claim 2 is hung down and hit the union three-piece, it is characterized in that: the outer surface of the radian of said arcuate furrow structure (6) and " O " RunddichtringO (3) can tightly suit.
4. low pressure as claimed in claim 2 is hung down and hit the union three-piece, it is characterized in that: said attaching nut's (2) cone structure (5) can tightly suit with the outer surface of " O " RunddichtringO (3).
5. low pressure as claimed in claim 1 is hung down and is hit the union three-piece, and it is characterized in that: said attaching nut (2) has the protruding wing structure that can be knocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220021691XU CN202521102U (en) | 2012-01-17 | 2012-01-17 | Low-pressure hammering union three-piece set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220021691XU CN202521102U (en) | 2012-01-17 | 2012-01-17 | Low-pressure hammering union three-piece set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521102U true CN202521102U (en) | 2012-11-07 |
Family
ID=47104054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220021691XU Expired - Lifetime CN202521102U (en) | 2012-01-17 | 2012-01-17 | Low-pressure hammering union three-piece set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521102U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644298A (en) * | 2013-11-27 | 2014-03-19 | 芜湖通和汽车管路系统有限公司 | Sensor mounting base structure |
| CN106958699A (en) * | 2017-05-25 | 2017-07-18 | 无锡市金羊管道附件有限公司 | A kind of shock-proof connector |
-
2012
- 2012-01-17 CN CN201220021691XU patent/CN202521102U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644298A (en) * | 2013-11-27 | 2014-03-19 | 芜湖通和汽车管路系统有限公司 | Sensor mounting base structure |
| CN106958699A (en) * | 2017-05-25 | 2017-07-18 | 无锡市金羊管道附件有限公司 | A kind of shock-proof connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent director of Baoji xinjiuding Petroleum Machinery Co.,Ltd. Document name: Notice of approval of right to request |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Patent of Baoji xinjiuding Petroleum Machinery Co.,Ltd. The person in charge Document name: Notice of expiration and termination of patent right |