CN101922592B - Internal-pressure self-sealing rotary tube joint - Google Patents
Internal-pressure self-sealing rotary tube joint Download PDFInfo
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- CN101922592B CN101922592B CN2010102435283A CN201010243528A CN101922592B CN 101922592 B CN101922592 B CN 101922592B CN 2010102435283 A CN2010102435283 A CN 2010102435283A CN 201010243528 A CN201010243528 A CN 201010243528A CN 101922592 B CN101922592 B CN 101922592B
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Abstract
The invention relates to an internal-pressure self-sealing rotary tube joint which comprises an inner tube (1) and an outer tube (2), and is characterized in that the outer tube (2) is formed by connecting a straight tube section (201) and a convex tube section (204); one end of the inner tube (1) is inserted into the convex tube section (204) and is provided with a ring-shaped boss (105); the external diameter of the ring-shaped boss (105) is matched with the internal diameter of the convex tube section (204); the end of the inner tube (1) inserted into the convex tube section (204) and the two ends of the ring-shaped boss (105) are respectively provided with a front sealing piece (3) and a rear sealing piece (5); the rear sealing piece (5) is close to the side of the straight tube section (201) of the outer tube (2); and the front sealing piece (3) and the rear sealing piece (5) are covered in the convex tube section (204). The internal-pressure self-sealing rotary tube joint has the advantages of simple structure, convenient manufacturing and low cost.
Description
The application is that application number is dividing an application of 200910027028.3 patent of invention.
Technical field
The present invention relates to a kind of pipe joint; Especially a kind of be used for ducted, can realize under the high pressure effect own that in pipeline the self-packing while can make inner and outer pipes relatively rotate from face again and realize the duct length swivel joint of compensation automatically, specifically a kind of internal-pressure self-sealing rotary tube joint.
Background technique
At present; Traditional bushing type, bellow type and steel ball type compensation of pipeline device are owing to exist complex structure; Reasons such as cost height, inconvenient installation and compensation rate are little progressively are rotated the formula compensator and replace, and it is simple in structure, easily manufactured that a large amount of at present uses have whirl compensator to have; The advantage that compensation rate is big sees Chinese patent ZL982270615, ZL022587098 for details.
But it is found that in actual use because the sealing configuration existing problems; Can produce face leakage; Especially when carrying high temperature, high-pressure medium; Especially leakage phenomenon can occur, Chinese patent ZL200610041301.4 advances targetedly sealing configuration is improved for this reason, and it can adapt to the user demand of high temperature, high-pressure delivery pipeline.
But find in the actual use of claimant that what really play seal action among the ZL200610041301.4 is high pressure resistant seal ring, and the conventional seals circle of wherein installing not only role is less; And the sealing circle is the compaction forces that acts on gland and sealing seat through turnbuckle; Play face seal, under such compaction forces, pipeline certainly will produce very big frictional force when expanding rotation; And want overcome friction to make it to rotate; Certainly will require intensity, rigidity and the support bracket fastened requirements at the higher level that are designed with of pipeline material, shorten complementary range, increase technical difficulty and cost of investment.And installing and locating inconvenience, make whole whirl compensator also need come the conventional seals circle is positioned through increasing sealing flange, increased structure and complexity and manufacture difficulty greatly, increased manufacture cost.
Summary of the invention
The objective of the invention is complex structure, have anchor ring frictional force during rotation, the problem that manufacture cost is high to existing whirl compensator existence; Design a kind of simple in structure; Make easy for installation, no anchor ring frictional force, the internal-pressure self-sealing rotary tube joint that number of spare parts is few; It can be used to replace existing whirl compensator, realizes that the length of pipeline compensates automatically.
Technological scheme of the present invention is:
A kind of internal-pressure self-sealing rotary tube joint; Pipe 1, outer tube 2 in comprising; It is characterized in that described outer tube 2 is linked to each other with protruding pipeline section 204 by straight length 201 forms, described in an end of pipe 1 insert in the protruding pipeline section 204, insert at interior pipe 1 on the end of protruding pipeline section 204 and be provided with annular boss 105; The internal diameter of the external diameter of said annular boss 105 and said protruding pipeline section 204 matches; Insert on the end of protruding pipeline section 204 at interior pipe 1, the both sides of said annular boss 105 are separately installed with preposition Sealing 3 and rearmounted Sealing 5, rearmounted Sealing 5 is near straight length 201 1 sides of outer tube 2, and described preposition Sealing 3 all is covered by in the protruding pipeline section 204 with rearmounted Sealing 5.
Between described protruding pipeline section 204 and the interior pipe 1 contacted anchor ring seal ring or ball 4 are installed.
Link to each other through the frustum 205 that has endoporus between the straight length 201 of described outer tube 2 and the protruding pipeline section 204, and the internal diameter of the endoporus aperture of frustum 205 and straight length 201 matches.
The present invention has the following advantages:
The present invention is under the prerequisite of having carried out a large amount of tests, through existing pipeline is found its complex structure with whirl compensator (being equivalent to pipe joint of the present invention) analysis, has anchor ring frictional force; Make very inconvenience is installed all, and the present invention is except the advantage that keeps existing compensator, because simple in structure; Solved the problem of anchor ring frictional force, manufacture cost can decline to a great extent, and has eliminated the very big frictional force that effect produced of original whirl compensator turnbuckle to the compaction forces of gland and sealing seat; Make pipeline when operation, no longer need overcome the frictional force when rotating, can make the compensation of pipeline distance bigger, the fixed support design is littler; Intensity, rigidity requirement to pipeline reduce; Increase Security and reduce cost of investment, owing to cancelled flange combination and face seal part, manufacture cost reduces greatly simultaneously.
The present invention utilizes the interior compacting of pipeline existing from motive sealing; When in the pipeline pressure being arranged, pressure acts on and produces the power that pipe separates with outer tube in the promotion on the small end face, and this Separating force finally acts on the seal ring; Make the seal ring extrusion and play good sealing effect; And the pipe internal pressure is high more, changes greatly more, and sealing effect is good more.As shown in Figure 1.
The present invention only needs three parts just to realize that effective connection of pipe joint also can relatively rotate, and therefore all has very big advantage from aspects such as cost of material, manufacture costs.
The present invention not only can be used for all spectra of original whirl compensator; Compensate (should use in pairs) like common line transportation fields of enterprise such as petrochemical industry, rock gas, crude oil, steam, logistics; And can be used for daily life fields such as running water pipe, further expanded the application of whirl compensator.
Description of drawings
Fig. 1 is one of structural representation of the present invention.
Fig. 2 is two of a structural representation of the present invention.
Fig. 3 is three of a structural representation of the present invention.
Fig. 4 is four of a structural representation of the present invention.
Embodiment
Following structure accompanying drawing and embodiment are further described the present invention.
Embodiment one.
Like Fig. 1, shown in 2.
A kind of internal-pressure self-sealing rotary tube joint; Mainly form by interior pipe 1, outer tube 2 and 3 three parts of preposition Sealing; Pipe 1 comprises straight length 101 and step section 102 wherein; The two ends of step section 102 are respectively equipped with large end face vertical with shaft axis 103 and small end face 104, and the outer surface of step section 102 is provided with conical surface section 105, also can be arranged to the structure that conical surface section adds the cylinder section during practical implementation; Described outer tube 2 is made up of outer straight length 201, Taper Pipe section 202 and end cap section 203; Taper Pipe section 202 outside between straight length 201 and the end cap section 203; Can be the whole structure that links to each other between Taper Pipe section 202 and the outer straight length 201, also can be welded structure, from easy for installation; Should adopt between the other end of Taper Pipe section 202 and the end cap section 203 to be weldingly connected, as shown in the figure.Taper Pipe section 202 matches with conical surface section 105 on the interior pipe 1 step section 102; Said end cap section 203 is sleeved on the straight length 101 of interior pipe 1; In described preposition Sealing 3 is sleeved on pipe 1 the straight length 101 and between the inner bottom surface of large end face 103 and end cap section 203; Can know that by Fig. 1 preposition Sealing 3 is positioned in the space that large end face surrounded by the interior end of outer tube end cap section, inwall and interior pipe straight length and interior pipe step section.Can not produce leakage for low pressure is not had under the condition of temperature rise, also can be between the straight length 101 of end cap section 203 and suit during practical implementation of the present invention seal ring of suit or ball 4.In order to strengthen resistance to pressure, during practical implementation, described preposition Sealing 3 can adopt by rigid backbone with through high pressure and be fixed on the high pressure resistant seal ring that the graphite material layer of rigid backbone outer surface and both ends of the surface is formed.In addition, also can be in outer tube 2 during practical implementation, the outside of described small end face 104 is equipped with rearmounted Sealing 5, as shown in Figure 2, the internal diameter of rearmounted Sealing 5 is identical with the internal diameter of outer tube straight length 201.
During practical implementation,, also can apply the coating that one deck is corrosion-resistant, temperature tolerance is good at the internal surface of the Taper Pipe section of outer tube in order to realize the selfsealings between the conical surface, also can be simultaneously or on the conical surface of interior pipe, apply the identical coating of one deck separately.
Embodiment two.
Like Fig. 3, shown in 4.
A kind of internal-pressure self-sealing rotary tube joint; Pipe 1, outer tube 2 in comprising; Described outer tube 2 is linked to each other with protruding pipeline section 204 by straight length 201 and forms, and an end of described interior pipe 1 inserts in the protruding pipeline section 204, on an end of the protruding pipeline section 204 of interior pipe 1 insertion, is provided with annular boss 105; The internal diameter of the external diameter of said annular boss 105 and said protruding pipeline section 204 matches; Insert on the end of protruding pipeline section 204 at interior pipe 1, the both sides of said annular boss 105 are separately installed with preposition Sealing 3 and rearmounted Sealing 5, rearmounted Sealing 5 is near straight length 201 1 sides of outer tube 2, and described preposition Sealing 3 all is covered by in the protruding pipeline section 204 with rearmounted Sealing 5.Between described protruding pipeline section 204 and the interior pipe 1 contacted anchor ring seal ring or ball 4 can be installed also.Between the end face of rearmounted Sealing 5 and protruding pipeline section 204, preferably leave certain axial clearance during practical implementation, 105 pairs of preposition Sealings 3 push the starting self sealing action so that the high pressure air physical efficiency gets into the promotion annular boss.In order to install; Protruding pipeline section 204 should be welded by two-part; And the cover adorn preposition Sealing 3 an end should from interior pipe 1 an end of band shape boss 105 be not enclosed within the pipe 1 on; And could weld mutually with the other end of protruding pipeline section 204 after covering on preposition Sealing 3 wherein, the other end of protruding pipeline section 204 can with the straight length 201 as a whole structures of outer tube, also can adopt welded structure.As shown in Figure 3.
In addition, during practical implementation, also can link to each other between the straight length 201 of described outer tube 2 and the protruding pipeline section 204, and the internal diameter of the endoporus aperture of frustum 205 and straight length 201 matches through the frustum 205 that has endoporus.As shown in Figure 4.
The present embodiment remaining part is all identical with embodiment one.
Pipe joint of the present invention should use when using in pairs, both can be used for surface duct and has carried out length compensation, also can be used for the length compensation of ground-burying type pipe.Because required component are few, the support during therefore concrete the installation also can be more simple, therefore can reduce greatly and make and installation cost.The principle of rotation compensation of the present invention is identical with existing whirl compensator.
All the identical existing technology that maybe can adopt realizes the linkage structures of the straight length that the present invention does not relate to part as the straight length of interior pipe and outer tube and corresponding conveyance conduit etc. with existing technology.
Claims (2)
1. internal-pressure self-sealing rotary tube joint; Comprise interior pipe (1) and outer tube (2); It is characterized in that described outer tube (2) is linked to each other with protruding pipeline section (204) by straight length (201) forms; An end of pipe (1) inserts in the protruding pipeline section (204) in described; Insert at interior pipe (1) on the end of protruding pipeline section (204) and be provided with annular boss (105), the internal diameter of the external diameter of said annular boss (105) and said protruding pipeline section (204) matches, and inserts on the end of protruding pipeline section (204) at interior pipe (1), the both sides of said annular boss (105) are separately installed with preposition Sealing (3) and rearmounted Sealing (5); Rearmounted Sealing (5) is near straight length (201) one sides of outer tube (2), and described preposition Sealing (3) and rearmounted Sealing (5) all are covered by in the protruding pipeline section (204); Between described protruding pipeline section (204) and the contacted anchor ring of interior pipe (1) seal ring or ball (4) are installed.
2. internal-pressure self-sealing rotary tube joint according to claim 1; Link to each other through the frustum (205) that has endoporus between the straight length (201) that it is characterized in that described outer tube (2) and the protruding pipeline section (204), and the internal diameter of the endoporus aperture of frustum (205) and straight length (201) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102435283A CN101922592B (en) | 2009-06-08 | 2009-06-08 | Internal-pressure self-sealing rotary tube joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102435283A CN101922592B (en) | 2009-06-08 | 2009-06-08 | Internal-pressure self-sealing rotary tube joint |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100270283A Division CN101576184B (en) | 2009-06-08 | 2009-06-08 | Internal pressure self-sealing swivel joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101922592A CN101922592A (en) | 2010-12-22 |
| CN101922592B true CN101922592B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102435283A Active CN101922592B (en) | 2009-06-08 | 2009-06-08 | Internal-pressure self-sealing rotary tube joint |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458852A (en) * | 2022-02-15 | 2022-05-10 | 宋章根 | Internal pressure self-sealing rotary compensator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038435A (en) * | 1978-12-22 | 1980-07-23 | Kubota Ltd | Slipping off preventing pipe joint |
| CN1047557A (en) * | 1989-05-23 | 1990-12-05 | 蓬塔穆松公司 | Sealing gasket, connect the cover and SEALING FITTING |
| CN1048445A (en) * | 1989-06-30 | 1991-01-09 | 蓬塔穆松公司 | The sealing gasket of leakproof locked joints |
| CN1109155A (en) * | 1993-09-25 | 1995-09-27 | 大韩铸物工业株式会社 | Fast joint type cast iron soil pipe jointing device |
| CN2410518Y (en) * | 2000-02-28 | 2000-12-13 | 重庆钢铁(集团)有限责任公司 | Rotating joint |
| CN1296143A (en) * | 2000-12-13 | 2001-05-23 | 梁世良 | Quick pipe joint and making method thereof |
-
2009
- 2009-06-08 CN CN2010102435283A patent/CN101922592B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038435A (en) * | 1978-12-22 | 1980-07-23 | Kubota Ltd | Slipping off preventing pipe joint |
| CN1047557A (en) * | 1989-05-23 | 1990-12-05 | 蓬塔穆松公司 | Sealing gasket, connect the cover and SEALING FITTING |
| CN1048445A (en) * | 1989-06-30 | 1991-01-09 | 蓬塔穆松公司 | The sealing gasket of leakproof locked joints |
| CN1109155A (en) * | 1993-09-25 | 1995-09-27 | 大韩铸物工业株式会社 | Fast joint type cast iron soil pipe jointing device |
| CN2410518Y (en) * | 2000-02-28 | 2000-12-13 | 重庆钢铁(集团)有限责任公司 | Rotating joint |
| CN1296143A (en) * | 2000-12-13 | 2001-05-23 | 梁世良 | Quick pipe joint and making method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-159182A 2001.06.12 |
| JP特开平11-94163A 1999.04.09 |
Also Published As
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| CN101922592A (en) | 2010-12-22 |
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Assignee: Jiangsu Hongxin Revolving Compensator Technology Co.,Ltd. Assignor: Song Zhanggen Contract record no.: 2012320000628 Denomination of invention: Internal-pressure self-sealing rotary tube joint Granted publication date: 20120111 License type: Exclusive License Open date: 20101222 Record date: 20120522 |