CN101576184B - Internal pressure self-sealing swivel joint - Google Patents
Internal pressure self-sealing swivel joint Download PDFInfo
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- CN101576184B CN101576184B CN2009100270283A CN200910027028A CN101576184B CN 101576184 B CN101576184 B CN 101576184B CN 2009100270283 A CN2009100270283 A CN 2009100270283A CN 200910027028 A CN200910027028 A CN 200910027028A CN 101576184 B CN101576184 B CN 101576184B
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Abstract
An internal pressure self-sealing swivel joint comprises an inner pipe (1), an outer pipe (2) and a preposed sealing element (3), and is characterized in that: the inner pipe (1) comprises a straight pipe section (101) and a step section (102), two ends of the step section (102) are respectively provided with a big end face (103) and a small end face (104) which are perpendicular to an axial lead,and the outer surface of the step section (102) is provided with a conical surface section (105); the outer pipe (2) consists of an outer straight pipe section (201), a taper pipe section (202) and a n end cover section (203), the taper pipe section (202) is positioned between the outer straight pipe section (201) and the end cover section (203) and is matched with the conical surface section (105) on the step section (102) of the inner pipe (1), and the end cover section (203) is sleeved on the straight pipe section (101) of the inner pipe (1); and the preposed sealing element (3) is sleeved on the straight pipe section (101) of the inner pipe (1) and positioned between the big end face (103) and the inner bottom surface of the end cover section (203). The internal pressure self-sealing swivel joint has the advantages of simple structure, convenient manufacture and low cost.
Description
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, installation inconvenience and compensation rate are little progressively are rotated the formula compensator and replace, it is simple in structure that a large amount of at present uses have whirl compensator to have, easily manufactured, 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 appear, 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, 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 by 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 the intensity of pipeline material, rigidity and support bracket fastened design have requirements at the higher level, shorten complementary range, increase technical difficulty and cost of investment.And installing and locating inconvenience, make that whole whirl compensator also needs to come the conventional seals circle is positioned by 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 at existing whirl compensator existence, there is anchor ring frictional force during rotation, the problem that manufacture cost is high, 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 and preposition Sealing 3 in comprising, it is characterized in that described interior pipe 1 comprises straight length 101 and step section 102, 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; 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, described Taper Pipe section 202 matches with conical surface section 105 on the interior pipe 1 step section 102, in described end cap section 203 is sleeved on pipe 1 the straight length 101, in described preposition Sealing 3 is sleeved on the straight length 101 of pipe 1 and between the inner bottom surface of large end face 103 and end cap section 203.
Seal ring or ball 4 are installed between the straight length 101 of described end cap section 203 and suit.
Connecting the large end face 103 of step section 102 and the outer surface between the small end face 104 is made up of the conical surface and cylinder.
Described preposition Sealing 3 is formed by rigid backbone with through the graphite material layer that high pressure is fixed on rigid backbone outer surface and both ends of the surface.
In outer tube 2, the outside of described small end face 104 is equipped with rearmounted Sealing 5.
The present invention has the following advantages:
The present invention is under the prerequisite of having carried out a large amount of tests, by existing pipeline is found its complex structure with whirl compensator (being equivalent to pipe joint of the present invention) analysis, there is anchor ring frictional force, it is all very inconvenient to make installation, and the present invention is except the advantage that keeps existing compensator, because it is simple in structure, solved the problem of anchor ring frictional force, manufacture cost can decline to a great extent, eliminated the very big frictional force that effect produced of original whirl compensator turnbuckle to the compaction forces of gland and sealing seat, frictional force when making pipeline no longer need to overcome rotation when operation can make the compensation of pipeline distance bigger, and the fixed support design is littler, intensity to pipeline, rigidity requirement reduces, 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, 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) as 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
The present invention is further illustrated for following structure drawings and Examples.
Embodiment one.
As shown in Figure 1, 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, 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 when specifically implementing; 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, described 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, as shown in Figure 1, preposition Sealing 3 be positioned in by the interior end, inwall and the interior pipe straight length of outer tube end cap section and in the space that large end face surrounded of 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 when the present invention specifically implements seal ring of suit or ball 4.In order to strengthen resistance to pressure, when specifically implementing, 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 when specifically implementing, 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 concrete enforcement,, 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.
Shown in Fig. 3,4.
A kind of internal-pressure self-sealing rotary tube joint, pipe 1 in comprising, outer tube 2, described outer tube 2 is linked to each other with protruding pipeline section 204 by straight length 201 and forms, an end of pipe 1 inserts in the protruding pipeline section 204 in described, on an end of the protruding pipeline section 204 of interior pipe 1 insertion, be provided with annular boss 105, the internal diameter of the external diameter of described annular boss 105 and described protruding pipeline section 204 matches, insert on the end of protruding pipeline section 204 at interior pipe 1, the both sides of described 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 tubes 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 interior pipe 1 contacted anchor ring seal ring or ball 4 can be installed also.Preferably leave certain axial clearance during concrete enforcement between the end face of rearmounted Sealing 5 and protruding pipeline section 204,105 pairs of preposition Sealings 3 push the starting self sealing action so that the high pressure air physical efficiency enters 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, when specifically implementing, 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 by 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.
The straight length of part that the present invention does not relate to such as interior pipe and the straight length of outer tube are realized with the prior aries that maybe can adopt all same as the prior art such as linkage structure of corresponding conveyance conduit.
Claims (5)
1. internal-pressure self-sealing rotary tube joint, comprise interior pipe (1), outer tube (2) and preposition Sealing (3), it is characterized in that described interior pipe (1) comprises straight length (101) and step section (102), the two ends of step section (102) are respectively equipped with large end face (103) vertical with the shaft axis of interior pipe (1) and small end face (104), and the outer surface of step section (102) is provided with conical surface section (105); 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) is positioned between outer straight length (201) and the end cap section (203), described Taper Pipe section (202) matches with conical surface section (105) on interior pipe (1) the step section (102), described end cap section (203) is sleeved on the straight length (101) of interior pipe (1), and the straight length (101) that described preposition Sealing (3) is sleeved on interior pipe (1) is gone up and is positioned between the inner bottom surface of large end face (103) and end cap section (203).
2. internal-pressure self-sealing rotary tube joint according to claim 1 is characterized in that being equipped with seal ring or ball (4) between the straight length (101) of described end cap section (203) and suit.
3. internal-pressure self-sealing rotary tube joint according to claim 1 is characterized in that connecting the large end face (103) of step section (102) and the outer surface between the small end face (104) and is made up of the conical surface and cylinder.
4. internal-pressure self-sealing rotary tube joint according to claim 1 is characterized in that described preposition Sealing (3) forms by rigid backbone with through the graphite material layer that high pressure is fixed on rigid backbone outer surface and both ends of the surface.
5. internal-pressure self-sealing rotary tube joint according to claim 1 is characterized in that in outer tube (2), the outside of described small end face (104) is equipped with rearmounted Sealing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270283A CN101576184B (en) | 2009-06-08 | 2009-06-08 | Internal pressure self-sealing swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270283A CN101576184B (en) | 2009-06-08 | 2009-06-08 | Internal pressure self-sealing swivel joint |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102435283A Division CN101922592B (en) | 2009-06-08 | 2009-06-08 | Internal-pressure self-sealing rotary tube joint |
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| CN101576184A CN101576184A (en) | 2009-11-11 |
| CN101576184B true CN101576184B (en) | 2010-12-01 |
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| CN2009100270283A Active CN101576184B (en) | 2009-06-08 | 2009-06-08 | Internal pressure self-sealing swivel joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106594845A (en) * | 2017-01-17 | 2017-04-26 | 天津大学 | Totally enclosed type heat accumulating type floor radiant heating pipe and manufacturing method thereof |
| CN107270001A (en) * | 2017-07-29 | 2017-10-20 | 江苏永力管道有限公司 | High pressure is double-current to whirl compensator |
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| CN101576184A (en) | 2009-11-11 |
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Assignee: Jiangsu Hongxin Revolving Compensator Technology Co.,Ltd. Assignor: Song Zhanggen Contract record no.: 2011320000296 Denomination of invention: Internal-pressure self-sealing rotary tube joint Granted publication date: 20101201 License type: Exclusive License Open date: 20091111 Record date: 20110317 |