CN100520144C - Metal pipe connection structure with multiple steps - Google Patents
Metal pipe connection structure with multiple steps Download PDFInfo
- Publication number
- CN100520144C CN100520144C CNB2007100290216A CN200710029021A CN100520144C CN 100520144 C CN100520144 C CN 100520144C CN B2007100290216 A CNB2007100290216 A CN B2007100290216A CN 200710029021 A CN200710029021 A CN 200710029021A CN 100520144 C CN100520144 C CN 100520144C
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- CN
- China
- Prior art keywords
- ring
- seal ring
- connecting head
- groove
- metal 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
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Abstract
A multi-step metal pipe connecting structure, it is characterized by: it consists of connecting pipe component main body with fluid channel, two or more adapters equipped with fluid channel and installed on the connecting pipe component main body and metal pipe sealed and connected in the adapter and its end is equipped with outer convex ring, the adapter end surface is equipped with ring groove which is equipped with two or more steps, the groove is equipped with sealing ring which is equipped with two or more steps corresponding with the steps in the ring groove, the adapter is equipped with nut cap which is equipped with metal pipe via hole, the nut cap thread is connected on the adapter, compression ring is installed between the nut cap and the sealing ring, the sealing ring end head inner wall is equipped with the ring which is closed to the end surface of groove, the lateral face of compression ring of the ring of corresponding sealing ring is equipped with fixing ring. Compared with prior technology, the invention has the advantages of the sealing ring can be closed to the convex ring of metal pipe tightly to seal the convex ring of the metal ring on the adapter of the connecting body even the water pressure is large.
Description
Technical field:
The present invention relates to a kind of link of metal tube.
Background technique:
Existing metal tube link generally is by the connecting body that has connecting head, be arranged on the seal ring in the connecting head, the set screw nut that is arranged on the connecting head constitutes, when being connected with metal tube, the metal tube that the termination is provided with bulge loop inserts in the connecting head, pass through nut then, seal ring forms the metal tube sealing and fixing on connecting head, this kind metal tube link, just can play seal action owing to need seal ring to have enough amount of deformation, therefore, the ratio broad of seal ring, but, the seal ring of broad is when hydraulic pressure is very big, be out of shape also very greatly, make on its bulge loop that can not be close to metal tube well the bulge loop on the metal tube is sealed on the connecting head of connecting body.
Summary of the invention:
Even goal of the invention of the present invention is to provide a kind of hydraulic pressure very big, seal ring also can be close to the metal pipe connection structure of the many steps on the connecting head that on the bulge loop of metal tube the bulge loop on the metal tube is sealed in connecting body well.
The present invention realizes like this, by the connection pipe fitting main body that has the fluid passage, be arranged on the two or more connecting heads that have the fluid passage on the connection pipe fitting main body, be sealedly connected on termination in the connecting head and have the metal tube formation of outer bulge loop, the connecting head end face is provided with circle shape groove, circle shape groove is provided with two-stage or two-stage with the level of appearing on the stage, be provided with seal ring in the groove, seal ring is provided with two-stage corresponding with the platform level in the circle shape groove or the platform level more than the two-stage, connecting head is provided with block, block is provided with the metal tube through hole, block is threaded on the connecting head, be provided with pressure ring between block and seal ring, seal ring termination madial wall is provided with the ring that abuts against the groove end face, and the side of the pressure ring of the ring of corresponding seal ring is provided with retaining ring.During use, the metal tube that end face is had outer bulge loop injects in the circle shape groove, puts seal ring and pressure ring respectively on metal tube, by block, pressure ring seal ring is pressed on the outer bulge loop of metal tube tightly.Because on the ring that is pressed on seal ring of the retaining ring of pressure ring, and the ring relative narrower, amount of deformation can be very not big, like this, press down at retaining ring,, also can not shrink and break away from the compacting of retaining ring even hydraulic pressure is very high, thereby pressure ring side and seal ring closely are adjacent to together, make seal ring play the effect of its sealing.
Here, the roomy downside inwall of seal ring is inner concavity.Adopt the downside inwall of inner concavity, make seal ring, guarantee that seal ring has good sealing effect easily toward the above-below direction distortion.
The present invention compared with the prior art, even it is very big to have hydraulic pressure, seal ring also can be close to the advantage on the connecting head that on the bulge loop of metal tube the bulge loop on the metal tube is sealed in connecting body well.
Description of drawings:
Fig. 1 is embodiments of the invention 1 structural representations;
Fig. 2 is embodiments of the invention 2 structural representations;
Fig. 3 is embodiments of the invention 3 structural representations.
Embodiment:
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
As shown in the figure, the present invention is by the connection pipe fitting main body 2 that has fluid passage 1, the two or more connecting heads 4 that have fluid passage 3 that are arranged on the connection pipe fitting main body 2 constitute, connecting head 4 end faces are provided with circle shape groove 5, circle shape groove 5 is provided with two-stage or two-stage with grade 5a that appears on the stage, be provided with seal ring 6 in the groove 5, seal ring 6 is provided with two-stage corresponding with platform level 5a in the circle shape groove 5 or the platform level 6a more than the two-stage, connecting head 4 is provided with block 7, block 7 is provided with metal tube through hole 8, so that having the metal tube 9 of outer bulge loop 10, end face 9a injects in the circle shape groove 5, block 7 is threaded on the connecting head 4, block 7 and 6 of seal rings are provided with pressure ring 11, seal ring 6 termination 6a madial walls are provided with the ring 6b that abuts against groove 5 end face 5a, and the side of the pressure ring 11 of the ring 6b of corresponding seal ring 6 is provided with retaining ring 11a.The roomy downside inwall 12 of seal ring 6 is inner concavity.Adopt the downside inwall 12 of inner concavity, make seal ring 6, guarantee that seal ring 6 has good sealing effect easily toward the above-below direction distortion.During use, the metal tube 9 that end face 9a is had outer bulge loop 10 injects in the circle shape grooves 5, puts seal ring 6 and pressure ring 11 respectively on metal tube 9, by block a shot 7, pressure ring 11 is pressed in seal ring 6 on the outer bulge loop 10 of metal tube 9 tightly.Block 7 is fixed together by internal thread (as shown in Figure 1) or outside thread (as shown in Figure 2) or screw rod, nut (as shown in Figure 3) and connecting head 4.
Claims (2)
1, a kind of metal pipe connection structure of many levels, it is characterized in that by the connection pipe fitting main body that has the fluid passage, be arranged on the plural connecting head that has the fluid passage on the connection pipe fitting main body, be sealedly connected on termination in the connecting head and have the metal tube formation of outer bulge loop, the connecting head end face is provided with circle shape groove, circle shape groove is provided with two-stage with the level of appearing on the stage, be provided with seal ring in the groove, seal ring is provided with the platform level more than the two-stage corresponding with the platform level in the circle shape groove, connecting head is provided with block, block is provided with the metal tube through hole, block is threaded on the connecting head, be provided with pressure ring between block and seal ring, seal ring termination madial wall is provided with the ring that abuts against outer bulge loop end face, and the side of the pressure ring of the ring of corresponding seal ring is provided with retaining ring.
2, the metal pipe connection structure of many levels according to claim 1 is characterized in that the roomy downside inwall of seal ring is inner concavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100290216A CN100520144C (en) | 2007-06-28 | 2007-06-28 | Metal pipe connection structure with multiple steps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100290216A CN100520144C (en) | 2007-06-28 | 2007-06-28 | Metal pipe connection structure with multiple steps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101086307A CN101086307A (en) | 2007-12-12 |
| CN100520144C true CN100520144C (en) | 2009-07-29 |
Family
ID=38937407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100290216A Expired - Fee Related CN100520144C (en) | 2007-06-28 | 2007-06-28 | Metal pipe connection structure with multiple steps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100520144C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146772B (en) | 2011-02-15 | 2013-04-17 | 宝鸡石油机械有限责任公司 | Rotary locking piece type drilling riser connector |
-
2007
- 2007-06-28 CN CNB2007100290216A patent/CN100520144C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101086307A (en) | 2007-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 10, No. 203 Dongsheng Street, Chancheng District, Foshan, Guangdong Patentee after: Feng Aizhu Address before: Sha Ping Town Heshan District Guangdong province Jiangmen city left here. No. 22 Hongxin accounting firm Patentee before: Feng Aizhu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20100628 |