CN205716144U - A kind of packing type extension section for pressure steel pipeline - Google Patents
A kind of packing type extension section for pressure steel pipeline Download PDFInfo
- Publication number
- CN205716144U CN205716144U CN201620360458.2U CN201620360458U CN205716144U CN 205716144 U CN205716144 U CN 205716144U CN 201620360458 U CN201620360458 U CN 201620360458U CN 205716144 U CN205716144 U CN 205716144U
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- corrugated tube
- trocar sheath
- penstock
- inner sleeve
- packing
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Abstract
This utility model relates to a kind of packing type extension section for pressure steel pipeline, it includes inner sleeve, trocar sheath, corrugated tube and wave core body, wherein: inner sleeve one end connects penstock, trocar sheath is sleeved on the inner sleeve other end and connects and be provided with the sealing structure being made up of packing and pressure ring between another penstock, and inside and outside sleeve pipe.Described corrugated tube one end is welded on the end of inner sleeve, and the other end is welded on the end of the penstock that trocar sheath connects, and the wave base of corrugated tube is placed on the inwall of trocar sheath, and described wave core body is arranged between corrugated tube and trocar sheath.The advantage that this utility model combines existing telescopic joint, the version of corrugated tube it is installed in addition with in using sleeve-type expansion joint, form a kind of sub-rigid body new construction, ensure not leak from structure, filler need not be changed, improve property safe and reliable to operation, and there is the ability that compensation penstock is deformed because of temperature and temperature depression.
Description
Technical field
This utility model relates to liaison of penstock parts, refers in particular to a kind of packing type extension section for pressure steel pipeline.
Background technology
Penstock is the important component part of hydroulic sturcture, and the telescopic joint safeguard construction that to be penstock important dress
Put.Existing telescopic joint is generally divided into: bushing type (material filling type), disc type (lens type), Wrinkled (corrugated).At present,
Generally using sleeve-type expansion joint and Wrinkled telescopic joint on China's hydraulic pipe, disc type telescopic joint is because of its axial bit shift compensation
Little and used by restriction.
Sleeve-type expansion joint has a bigger axial displacement compensation capability, and simple in construction is easy for installation, but easily leaks, and need through
Filler is changed in often maintenance, and operation maintenance workload is big.Wrinkled (corrugated) telescopic joint has certain axial bit shift compensation, does not lets out
Leakage, but security reliability is poor, particularly Large Diameter Pipeline, heavy wall steel plate forming technology difficulty very big, general engineering technology personnel are not
It is willing to use.
Summary of the invention
The purpose of this utility model is to be improved for shortcoming present in background technology and problem and innovate, it is provided that a kind of structure letter
Single, and penstock sealing and the packing type extension section for pressure steel pipeline of displacement demand can be met.
The technical solution of the utility model is to construct a kind of telescopic joint being connected between two penstocks, and it includes inner sleeve, overcoat
Pipe, corrugated tube and wave core body, wherein: described inner sleeve one end connects penstock, and it is another that described trocar sheath is sleeved on inner sleeve
One end also connects another penstock, and be provided with the sealing structure being made up of packing and pressure ring between described inside and outside sleeve pipe.
Described corrugated tube one end is welded on the end of inner sleeve, and the other end is welded on the end of the penstock that trocar sheath connects, and
The wave base of corrugated tube is placed on the inwall of trocar sheath, and described wave core body is arranged between corrugated tube and trocar sheath.
Advantage of the present utility model and beneficial effect:
This utility model combines the advantage of existing telescopic joint, is installed in addition with the version of corrugated tube in using sleeve-type expansion joint, is formed
A kind of sub-rigid body new construction, ensures not leak from structure, need not change filler, improve property safe and reliable to operation, and have benefit
Repay the ability that penstock is deformed because of temperature and temperature-depression.
Accompanying drawing explanation
Fig. 1 is this utility model cross-sectional view.
Detailed description of the invention
Structure and working principle of the present utility model:
Corrugated tube of the present utility model is containment member, is welded in two steel pipe gaps, and its outer layer has trocar sheath to support, and seals simultaneously
Corrugated tube is provided with steady ripple facility, is i.e. provided with wave core body between corrugated tube and trocar sheath, can effectively solve seal bellows due to
The destabilization problems that external pressure causes, makes whole corrugated tube, wave core body and trocar sheath form sub-rigid body structure.
When telescopic joint normally works, corrugated tube, by internal water pressure, produces and expands or other deformation, due to by trocar sheath and ripple
The support of core body, therefore, suffered on corrugated tube intrinsic pressure can be delivered on trocar sheath by trocar sheath and wave core body completely.Ripple
Stricture of vagina pipe, in addition to having sealing function, also acts as the effect of transmission internal force.
Under telescopic joint is operated in super not normal pressure condition, intrinsic pressure when being far longer than design pressure, owing to corrugated tube belongs to shell structure,
Under the effect of super not normal pressure, bellow seal pipe produces deformation comprehensively, quite completely contacts with wave core body, and act against trocar sheath
On, make whole retractor device become an entirety, be combined into rigid body, under the rigidity of trocar sheath ensures, retractor device is entirely capable of
Enough bear super not normal interior pressure.Separately it is designed to the least because of the gap between corrugated tube and wave core body, therefore, the deflection of corrugated tube
The most limited, when interior pressure big the most to a certain extent time, the interior pressure suffered by corrugated tube is fully transmitted on trocar sheath through wave core body,
Stress increase in corrugated tube also will not be the biggest, it is ensured that will not produce rupturing of corrugated tube, ensure that the peace of retractor device from structure
Full reliability.
For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is described more fully.In accompanying drawing
Give first-selected embodiment of the present utility model.But, this utility model can realize in many different forms, however it is not limited to
Embodiment described herein.On the contrary, provide the purpose of these embodiments be make disclosure of the present utility model more thorough
Comprehensively.
It should be noted that when element be considered as " setting " or " connection " on another element, it can be direct setting
Or be connected on another element or may be simultaneously present centering elements.
Unless otherwise defined, the technology people of all of technology used herein and scientific terminology and technical field of the present utility model
The implication that member is generally understood that is identical.Term used in the description is intended merely to describe concrete enforcement purpose, it is not intended that in limit
This utility model processed.
Embodiment:
As it is shown in figure 1, this telescopic joint includes inner sleeve 1, trocar sheath 2, corrugated tube 3, wave core body 4, packing 5, pressure ring 6, O
Shape sealing ring 8, flange 2-1.
Concrete, as it is shown in figure 1, a penstock is welded in inner sleeve 1 one end, trocar sheath 2 be sleeved on inner sleeve 1 other end,
And connect and between another penstock 7, and inside and outside sleeve pipe, be provided with the sealing structure being made up of packing 5 and pressure ring 6.Corrugated tube
3 one end are welded on the end of inner sleeve 1, and the other end is welded on the end of the penstock 7 that trocar sheath 2 connects, and corrugated tube 3
Wave base be placed on the inwall of trocar sheath 2.Described wave core body 4 is arranged between corrugated tube 3 and trocar sheath 2.
Concrete, it is connected as it is shown in figure 1, trocar sheath 2 one end is provided with flange 2-1 with the adpting flange 7-1 bolt of penstock 7,
Packing 5 and pressure ring 6 are arranged on trocar sheath 2 other end and are bolted.Further, described flange 2-1 and connection method
It is provided with O-ring seals 8 between blue 7-1 to seal.
Concrete, described corrugated tube is unicast light-wall pipe, or many ripples light-wall pipe.
Concrete, leave gap between described corrugated tube 3 and wave core body 4.
Embodiment described in the utility model is only the description carrying out preferred implementation of the present utility model, not to this practicality
Novel spirit and scope are defined, on the premise of without departing from this utility model design philosophy, and engineers and technicians couple in this area
Various modification that the technical solution of the utility model is made and improvement, all should fall into protection domain of the present utility model, this utility model
The technology contents being claimed, all records in detail in the claims.
Claims (4)
1. a packing type extension section for pressure steel pipeline, is connected between two penstocks, it is characterised in that include inner sleeve, trocar sheath, corrugated tube and wave core body, wherein:
Described inner sleeve one end connects penstock, and described trocar sheath is sleeved on the inner sleeve other end and connects another penstock, and being provided with the sealing structure being made up of packing and pressure ring between described inside and outside sleeve pipe；
Described corrugated tube one end is welded on the end of inner sleeve, and the other end is welded on the end of the penstock that trocar sheath connects, and the wave base of corrugated tube is placed on the inwall of trocar sheath, and described wave core body is arranged between corrugated tube and trocar sheath；
Described corrugated tube is unicast light-wall pipe.
Packing type extension section for pressure steel pipeline the most according to claim 1, it is characterised in that described trocar sheath one end is provided with flange and is connected with the adpting flange bolt of penstock, and described packing and pressure ring are arranged on the trocar sheath other end and are bolted.
Packing type extension section for pressure steel pipeline the most according to claim 2, it is characterised in that be provided with O-ring seals between described flange and adpting flange and seal.
Packing type extension section for pressure steel pipeline the most according to claim 1, it is characterised in that leave gap between described corrugated tube and wave core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360458.2U CN205716144U (en) | 2016-04-21 | 2016-04-21 | A kind of packing type extension section for pressure steel pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360458.2U CN205716144U (en) | 2016-04-21 | 2016-04-21 | A kind of packing type extension section for pressure steel pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205716144U true CN205716144U (en) | 2016-11-23 |
Family
ID=57293318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620360458.2U Active CN205716144U (en) | 2016-04-21 | 2016-04-21 | A kind of packing type extension section for pressure steel pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN205716144U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443619A (en) * | 2018-04-12 | 2018-08-24 | 中国葛洲坝集团股份有限公司 | Pressure steel pipe of hydropower station Bellows expansion joint installation method |
| CN110778821A (en) * | 2019-11-01 | 2020-02-11 | 王海飞 | Pipe fitting for enhancing sealing effect |
| CN112601444A (en) * | 2020-12-29 | 2021-04-02 | 西安永兴科技发展有限公司 | Novel composite material telescopic joint structure |
-
2016
- 2016-04-21 CN CN201620360458.2U patent/CN205716144U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443619A (en) * | 2018-04-12 | 2018-08-24 | 中国葛洲坝集团股份有限公司 | Pressure steel pipe of hydropower station Bellows expansion joint installation method |
| CN110778821A (en) * | 2019-11-01 | 2020-02-11 | 王海飞 | Pipe fitting for enhancing sealing effect |
| CN110778821B (en) * | 2019-11-01 | 2021-04-27 | 广东雄禹塑胶科技有限公司 | Pipe fitting for enhancing sealing effect |
| CN112601444A (en) * | 2020-12-29 | 2021-04-02 | 西安永兴科技发展有限公司 | Novel composite material telescopic joint structure |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |