CN1120322C - The extension section for pressure steel pipeline device - Google Patents
The extension section for pressure steel pipeline device Download PDFInfo
- Publication number
- CN1120322C CN1120322C CN98112442A CN98112442A CN1120322C CN 1120322 C CN1120322 C CN 1120322C CN 98112442 A CN98112442 A CN 98112442A CN 98112442 A CN98112442 A CN 98112442A CN 1120322 C CN1120322 C CN 1120322C
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- wave
- support ring
- corrugated pipe
- pipe segment
- pressure steel
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- Joints Allowing Movement (AREA)
Abstract
压力钢管伸缩节装置。两短管的接口端及与接口端连接的波纹管段5位于支撑环6内，波纹管段的外向波波顶接触或趋向于接触支撑环内壁面，内向波波腔内设有波芯体12，波芯体表面与波腔表面之间有一间隙，支撑环两端为自由端或其一端为自由端，另一端与短管连接，入水端的短管接口端设有抗磨环9，波纹管段的可伸缩性可满足压力钢管产生的轴向伸缩，波纹管段在承受径向压力时，支撑环和波芯体对其起刚性支撑作用，具有不泄漏、运行可靠的特点。
Pressure steel pipe expansion joint device. The interface ends of the two short pipes and the corrugated pipe section 5 connected to the interface ends are located in the support ring 6, the outward corrugated top of the corrugated pipe section contacts or tends to contact the inner wall of the support ring, and a corrugated core 12 is arranged in the inward corrugated cavity. There is a gap between the surface of the wave core body and the surface of the wave cavity. The two ends of the support ring are free ends or one end is a free end, and the other end is connected to the short pipe. The scalability can meet the axial expansion and contraction of the pressure steel pipe. When the bellows section bears radial pressure, the support ring and the corrugated core provide rigid support for it, which has the characteristics of no leakage and reliable operation.
Description
Technical field
The present invention relates to a kind ofly when laying penstock, be used for its pipe end piecing devices that connect, that have telescopicing performance, such as being used between the diversion steel pipe pipeline section of water power plant and diversion steel pipe and being connected of spiral case feed-water end etc.
Background technique
Number of patent application is 98230056.5, and the applying date is 980116 " pipeline expansion joint that does not leak is put ", and its structure is seen Fig. 1.This device has two short tubes (diagram short tube 1 and short tube 2) and sleeve pipe 3, the interface end of two short tubes is positioned at sleeve pipe, sleeve pipe 3 one ends are connected with the tube wall of a short tube (diagram short tube 1), sleeve pipe the other end internal face contacts with another short tube (diagram short tube 2) end outer wall cooperation, and has certain matching gap, be that sleeve pipe 3 the other ends are for to cooperate with short tube 2 outer wall, and can produce free end with respect to axial slip, flexible gap 4 is arranged between the interface end of two short tubes, should in the flexible gap corrugated pipe segment 5 be set, the corrugated pipe segment two ends are that sealing state is connected with the interface end of two short tubes respectively.
In addition, the patent No. is 93214138.2, the applying date is 930526 patent specification, disclose a kind of " the disposable corrugated expansion joint of direct-burried pipeline ", this corrugated expansion joint comprises short end pipe, long end pipe (the present invention is referred to as two short tubes), bellows (the present invention is referred to as corrugated pipe segment), outer sleeve (the present invention is referred to as support ring).The inner of described short end pipe, long end pipe all is positioned at outer sleeve, described bellows is located in short end pipe and the long flexible gap of holding between the interface tube end, the inner welding of pipe is held at the bellows two ends respectively with short end pipe, length, long end pipe can move axially with respect to the outer sleeve generation.
Above prior art, its effect one are to satisfy the defective that overcomes " leakage ", the 2nd, can satisfy pipeline because of the axial stretching that temperature effect produces, and effectively eliminate pipe temperature stress, technique effect is obvious.But still have the following disadvantages: when being used for the pressure piping of big caliber, higher pressure or high pressure, bellows (section) need bear corresponding big radial pressure, and the excessive corrugated pipe segment of wall thickness is difficult to realize on preparation process, in this case, the corrugated pipe segment of thin-shell construction will produce excessive outward bulge bulging deformation because of bearing excessive radial pressure, promptly so-called " unstability " causes its body or damages easily with the connection part of pipe end.
Summary of the invention
The purpose of this invention is to provide the slip joint device that a kind of penstock is used, this device neither produces and leaks when being used for the penstock of big caliber, higher pressure, has stable operational reliability again.
The object of the present invention is achieved like this, its structure comprises two short tubes and support ring, the interface end of two short tubes all is positioned at support ring, in the flexible gap between the interface end of two short tubes corrugated pipe segment is set, the two ends of this corrugated pipe segment are that sealing state is connected with the interface end of two short tubes respectively, satisfy not produce leakage; Between the two short tube interface end in the flexible gap, and be that the corrugated pipe segment that sealing state is connected all is positioned at support ring with two short tube interface end, support ring plays the radial support effect to corrugated pipe segment, the support ring two end part are free end, or the one end is connected with the short tube of this end, the other end is a free end, free end is arranged in the both ends or one end of support ring, short tube can be produced with respect to support ring to be moved axially, to satisfy the needs of penstock when the axial stretching, in the inward wave cavity in the described corrugated pipe segment wave core body is set, be provided with one between the surface in ripple chamber and the wave core body surface and satisfy the interior gap that only in regime of elastic deformation, produces distortion to the wave-wave body, the effect in this gap is when steel pipe produces axial stretching, to the wave-wave body corresponding flexible space is arranged in satisfying, the setting value in this gap also consider in to the wave-wave body when bearing big radial pressure, its distortion can only be in the regime of elastic deformation, the effect that wave core body is set is, bearing the big distortion that radial pressure produced when also being in the regime of elastic deformation when interior to the wave-wave body, top, inward wave cavity surface promptly contacts with the corresponding surface of wave core body, wave core body promptly plays the rigid support effect to interior to the wave-wave body, radial pressure is through transmitting, then bear, produce to the wave-wave body in avoiding that " unstability " and is unlikely destroyed by the support ring that is provided with sufficient intensity.Thereby possesses stable operational reliability.When using this device, the outer end by its two short tube is connected the formation conveyance conduit with adjacent steel tube end part respectively.
Because this device is provided with can be to the passive support ring of corrugated pipe segment, and setting can be to the interior wave core body that plays the rigid support effect to the wave-wave body in the inward wave cavity of corrugated pipe segment, and be provided with corrugated pipe segment required deformation space of its body when flexible, make the corrugated pipe segment of thin-shell construction have two kinds of actual motion effects, promptly when the penstock axial stretching, keep its intrinsic scalable ride quality, when bearing big radial pressure, then become the action effect of inferior rigid body member, has corresponding strength, can effectively avoid destroyed, significant technique effect is to have guaranteed that this device is being used for big caliber, operational reliability during higher penstock.
Description of drawings
Fig. 1 is the structural front view of background technique " the pipeline expansion joint device that does not leak ";
Fig. 2 is the structural front view of the embodiment of the invention 1;
Fig. 3 is a kind of enforcement structural front view of the wave core body of apparatus of the present invention;
Fig. 4 is the another kind of structural front view of implementing of the wave core body of apparatus of the present invention;
Fig. 5 is embodiment 2 a structural front view.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing.
Embodiment 1.Two short tubes are that the interface end of short tube 1 and short tube 2 all is positioned at support ring 6, in the flexible gap 4 between the two short tube interface end corrugated pipe segment 5 is set, corrugated pipe segment adopts stainless steel, and two ends are that sealing state is connected with the interface end of two short tubes respectively, and this example is welding.The quantity of the length of flexible gap size and line pipeline section, ripple joint is calculated according to penstock axial stretching amount, take all factors into consideration definite, Figure 2 shows that three ripple joints, the tube wall welding of the right part of support ring 6 and the short tube of this end 1 also can connect by other modes, makes both become rigid unitary, the left end of support ring is a free end, when the penstock generation moved axially, support ring 6, short tube 1 produced with respect to short tube 2 and move axially, and corrugated pipe segment is promptly thereupon by axial compression or stretching; Left end at support ring is that free end is provided with pressure ring 7, and pressure ring is connected with bolt with support ring, at the internal face place of its junction seal ring 8 is set.In addition, be on the short tube interface end face of water intake end wear-resistant ring 9 to be set at short tube 1, with of the wearing and tearing of effective minimizing medium to the corrugated pipe segment internal face, prolong and make the life-span, the working life and the penstock of thin-shell type corrugated pipe segment are adapted, the left end of wear-resistant ring is that the other end and short tube 2 are between the short tube interface end of waterexit end gapped 10, want to satisfy the displacement of penstock when extending axially, in the outer wall of wear-resistant ring and the corrugated pipe segment between the wave-wave top gapped 11, be out of shape required space to satisfy corrugated pipe segment its ripple joint when being compressed in radial direction, in the present embodiment, the export-oriented wave-wave top of corrugated pipe segment contacts with the internal face of support ring 6, when corrugated pipe segment was subjected to radial compression applied to trend towards being out of shape, support ring promptly played the rigid support effect to it.
This shows, when support ring and wave core body play rigid support to corrugated pipe segment, corrugated pipe segment is at the active state that bears the next Cheng Yagang body of radial pressure situation member, improved its effect stability widely, guaranteed its operational reliability effectively, and can reduce the wall thickness of corrugated pipe segment, improve stress to influence that it caused; Since wave core body surface and between surface, wave-wave chamber prefabricated gap, when the penstock axial stretching, make corrugated pipe segment still keep its intrinsic scalable performance, make this device possess reliable usability.
Claims (4)
1, the extension section for pressure steel pipeline device, two short tubes and support ring are arranged, the interface end of two short tubes all is positioned at support ring, be provided with corrugated pipe segment in the flexible gap between the two short tube interface end, the two ends of described corrugated pipe segment are that sealing state is connected with the interface end of two short tubes respectively, support ring plays the radial support effect to corrugated pipe segment, short tube can produce with respect to support ring and move axially, it is characterized in that being provided with wave core body in the inward wave cavity of described corrugated pipe segment, have one only in regime of elastic deformation, to produce the gap of distortion to the wave-wave body in satisfying between the surface of described inward wave cavity and the surface of wave core body.
2, according to the described extension section for pressure steel pipeline device of claim 1, it is characterized in that the two ends of described support ring (6) are free end, the internal face of support ring (6) is established groove (18), the bottom surface of the export-oriented wave-wave top contact groove of corrugated pipe segment.
3, according to claim 1 or 2 described extension section for pressure steel pipeline devices, it is characterized in that described wave core body (12) is made of rigid body (14) and two elastic components (15), two elastic components are located at respectively on the bi-side of rigid body.
4, according to claim 1 or 2 described extension section for pressure steel pipeline devices, it is characterized in that described wave core body (12) is made of rigid body (16) and soft formation body (17), the soft formation body is laid on the rigid body surface.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112442A CN1120322C (en) | 1998-04-21 | 1998-04-21 | The extension section for pressure steel pipeline device |
| CA002318466A CA2318466A1 (en) | 1998-01-16 | 1998-10-15 | A contractible joint device for metal conduit |
| JP2000540393A JP2002509232A (en) | 1998-01-16 | 1998-10-15 | Expansion joint device for metal conduit |
| PCT/CN1998/000246 WO1999036723A1 (en) | 1998-01-16 | 1998-10-15 | A contractible joint device for metal conduit |
| RU2000121550A RU2208194C2 (en) | 1998-01-16 | 1998-10-15 | Metal pipeline expansion joint |
| US09/600,353 US6422611B1 (en) | 1998-01-16 | 1998-10-15 | Contractible joint device for metal conduit |
| AU95285/98A AU9528598A (en) | 1998-01-16 | 1998-10-15 | A contractible joint device for metal conduit |
| EP98948671A EP1048886A4 (en) | 1998-01-16 | 1998-10-15 | A contractible joint device for metal conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112442A CN1120322C (en) | 1998-04-21 | 1998-04-21 | The extension section for pressure steel pipeline device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1232934A CN1232934A (en) | 1999-10-27 |
| CN1120322C true CN1120322C (en) | 2003-09-03 |
Family
ID=5222291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98112442A Expired - Fee Related CN1120322C (en) | 1998-01-16 | 1998-04-21 | The extension section for pressure steel pipeline device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120322C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7484773B2 (en) * | 2006-09-22 | 2009-02-03 | Kellogg Brown & Root Llc | Self purging expansion joint |
| CN109114334B (en) * | 2018-09-18 | 2020-06-30 | 贵州贵航飞机设计研究所 | Connecting mechanism and connecting method for special-shaped structural member |
| CN110701412B (en) * | 2019-10-17 | 2024-05-28 | 长沙东屋机电有限责任公司 | Hydropower station penstock sub-rigid structure expansion joint |
| CN111795249B (en) * | 2020-07-24 | 2021-11-19 | 济南新材料产业技术研究院 | Compensator and application thereof |
| CN111828753B (en) * | 2020-07-28 | 2021-09-21 | 温州安荷桥科技有限公司 | Pipeline connecting structure capable of horizontally displacing for building |
| CN113958790B (en) * | 2021-11-22 | 2025-10-21 | 长沙东屋机电有限责任公司 | Slipknot type sub-rigid structure expansion joint |
| CN117328981A (en) * | 2023-10-31 | 2024-01-02 | 广西玉柴机器股份有限公司 | Exhaust pipe sealing structure with folding sealing ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211336A (en) * | 1923-02-07 | 1924-02-21 | Max Gustav Hoffmann | Foot-pump |
| FR2471525A1 (en) * | 1979-12-03 | 1981-06-19 | Doryokuro Kakunenryo | Expansion joints esp. for reactor cooling systems - comprise concertina-tubes reinforced by steel rings |
| CN2165311Y (en) * | 1993-06-21 | 1994-05-18 | 谢忠民 | Bellows expansion joint with pressure tube |
| CN2176480Y (en) * | 1993-12-07 | 1994-09-07 | 卢秉刚 | Expansion joint with direction fixing support and position limiting and flow guide sleeve |
-
1998
- 1998-04-21 CN CN98112442A patent/CN1120322C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211336A (en) * | 1923-02-07 | 1924-02-21 | Max Gustav Hoffmann | Foot-pump |
| FR2471525A1 (en) * | 1979-12-03 | 1981-06-19 | Doryokuro Kakunenryo | Expansion joints esp. for reactor cooling systems - comprise concertina-tubes reinforced by steel rings |
| CN2165311Y (en) * | 1993-06-21 | 1994-05-18 | 谢忠民 | Bellows expansion joint with pressure tube |
| CN2176480Y (en) * | 1993-12-07 | 1994-09-07 | 卢秉刚 | Expansion joint with direction fixing support and position limiting and flow guide sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1232934A (en) | 1999-10-27 |
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Granted publication date: 20030903 Termination date: 20170421 |