CN109058639B - Telescopic compensation interface of vacuum traffic pipeline - Google Patents
Telescopic compensation interface of vacuum traffic pipeline Download PDFInfo
- Publication number
- CN109058639B CN109058639B CN201811206267.0A CN201811206267A CN109058639B CN 109058639 B CN109058639 B CN 109058639B CN 201811206267 A CN201811206267 A CN 201811206267A CN 109058639 B CN109058639 B CN 109058639B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- annular soft
- soft sealing
- comb
- supporting plate
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 244000126211 Hericium coralloides Species 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Abstract
The invention provides a telescopic compensation interface of a vacuum traffic pipeline, which relates to the technical field of vacuum pipeline compensation of vacuum track traffic and comprises a pipeline straight port end and an expanded pipeline socket end of an adjacent pipeline, wherein a surface sealing layer is arranged on the outer wall of a connecting part of the pipeline straight port end, a hard supporting plate ring with a comb-shaped cross section is arranged on the inner wall of the pipeline of the connecting part of the pipeline socket end, annular soft sealing blades are arranged in comb-shaped gaps of the hard supporting plate ring, the outer diameter of each annular soft sealing blade is fixed with the inner diameter of the hard supporting plate ring, and the inner diameter end face of each annular soft sealing blade is in contact with the surface sealing layer of the pipe end. The inner surface of the toothed ring of the hard supporting plate ring is in clearance fit with a surface sealing layer at the straight port end of the pipeline. The comb tooth clearance of the hard supporting plate ring is larger than the thickness of the annular soft sealing blade plate. The inner diameter end face of the annular soft sealing blade plate is in contact with the surface sealing layer. Can be applied to the construction of vacuum traffic pipelines.
Description
Technical Field
The invention relates to the field of vacuum pipeline compensation devices for vacuum rail transit, in particular to a telescopic compensation interface of a vacuum pipeline.
Background
In the latter high-speed railway age, on one hand, rail trains applying the wheel-rail technology are more and more difficult to accelerate; on the other hand, with the increase of the speed, the vehicle runs at a high speed under the normal air pressure condition, the air resistance is larger and larger, and the energy consumption is also uneconomical. Under the condition, the vacuum pipeline technology is applied, so that the rail vehicle runs in the pipeline similar to the vacuum environment, and a plurality of purposes of improving speed, reducing resistance, saving energy, protecting environment and the like are achieved, and the rail vehicle is a new scientific research front in the technical field of rail traffic. The vacuum pipeline test line is built by the southwest traffic university of China and the Hyperloop One of the United states, and the research on the vacuum pipeline trains is started at home and abroad.
In practical application, the vacuum pipeline is under the condition of continuously changing temperature, the vacuum pipeline can expand with heat and contract with cold along with the change of temperature, the size of the pipeline body can continuously change, and the straight-mouth end part of the pipeline can generate displacement. Therefore, the vacuum pipeline is required to be provided with the compensation device, and the axial displacement generated by the pipeline is compensated by the expansion and contraction of the compensation device.
The compensation device for the vacuum traffic pipeline is not found at present, the existing compensation device is mainly used for a fluid conveying pressure pipeline, and the compensation technology has two modes of natural compensation and equipment compensation. For axial displacement of the vacuum traffic pipeline, natural compensation can lead to changes in the track line, which is an inapplicable way. The existing equipment compensation mode mainly comprises a sleeve type compensator and a corrugated expansion joint. The sleeve compensator consists of three parts, namely a sleeve, a cannula and sealing filler, and compensates the thermal deformation of a pipeline by the relative movement of the cannula and the sleeve, and has the defects that: the packing is not much, the sealing packing is easy to wear along with the back and forth expansion of the pipeline, and the packing cannot be compensated after the sealing packing is worn, so that the packing needs to be replaced frequently, and the sleeve compensator is easy to leak; when the pipeline is slightly displaced radially and angularly, the phenomenon that the sleeve is blocked is easily caused. The compensation amount of the corrugated expansion joint is smaller than the axial size of the corrugated expansion joint, the corrugated expansion joint with a long axial size can only compensate a relatively small displacement, the distance between two connected ends of the corrugated expansion joint is too large, the corrugated expansion joint is of a flexible corrugated structure, rails are not conveniently paved on the corrugated expansion joint, the distance between the rails inside the straight mouth ends of two adjacent pipelines is too large, and a vehicle cannot be light to cross. And, the cost of the bellows expansion joint is high. Therefore, the existing compensation method is not suitable for the displacement compensation of the vacuum traffic pipeline.
Disclosure of Invention
The invention aims to provide a telescopic compensation interface of a vacuum traffic pipeline, which can effectively solve the technical problem of telescopic compensation of the vacuum traffic pipeline.
The technical scheme adopted by the invention for achieving the purpose is as follows:
the utility model provides a flexible compensation interface of vacuum traffic pipeline, includes the straight mouth end of pipeline, the pipe socket end that the butt joint pipe was enlarged, is equipped with outer surface sealing layer of pipe on the connecting portion outer wall of the straight mouth end of pipeline, and the pipeline inner wall of pipe socket end connecting portion is equipped with the radial cross-section and is the hard layer board ring of broach form, is equipped with annular soft seal blade in the broach form clearance of hard layer board ring, and annular soft seal blade's external diameter is fixed with hard layer board intra-annular internal diameter, and annular soft seal blade's internal diameter terminal surface and outer surface sealing layer of pipe contact.
The inner surface of the comb-shaped ring of the hard supporting plate ring is in clearance fit with a sealing layer on the outer surface of the pipe body at the straight port end of the pipe.
The comb tooth clearance of the hard supporting plate ring is larger than the thickness of the annular soft sealing blade plate.
The inner diameter end face of the annular soft sealing blade plate is contacted with the sealing layer on the outer surface of the pipe body.
Two butted pipeline ports are arranged at the joint of the straight port end and the socket end of the pipeline, wherein one port is provided with an axial movable supporting point, and the other port is a fixed supporting point.
At least two comb-shaped plate gaps of the hard supporting plate ring are arranged, and corresponding annular soft sealing blades are arranged in each comb-shaped plate gap.
The included angle between the inner diameter end surface of the annular soft sealing blade and the sealing layer on the outer surface of the pipe body at the straight port end of the pipe is larger than 60 degrees. The beneficial effects of the invention are as follows: comb-shaped sealing rings are formed by adopting comb-shaped hard supporting plate rings which are arranged inside the enlarged straight mouth ends of the pipelines and a plurality of annular soft sealing blades which are embedded between comb-shaped plates of the comb-shaped hard supporting plate rings, and the comb-shaped sealing rings are contacted with sealing layers on the outer surfaces of the pipelines which are arranged on the outer walls of the pipeline ends to form a fit, so that gas paths are blocked, a labyrinth effect is formed, and the sealing is effectively realized by throttling layer by layer. Because the annular soft sealing blade plate can have larger elastic deformation, enough allowance is left during installation, even if a part of annular soft sealing blade plate or the sealing layer on the outer surface of the pipe body is worn, the annular soft sealing blade plate can compensate in time and keep contact with the sealing layer on the outer surface of the pipe body, so that effective sealing is formed. In addition, because the inside of the pipeline is in a vacuum environment, the outside of the pipeline is in a normal pressure environment, and the pressure difference exists between the inside and the outside of the pipeline, the annular soft sealing blade plate can be tightly attached to the sealing layer on the outer surface of the pipeline under the action of air pressure, so that the sealing effect of the annular soft sealing blade plate is enhanced. The method overcomes the defect that the packing of the sleeve compensator cannot be self-compensated after friction and abrasion to cause leakage, and avoids the defect that the distance between two connected pipeline ends of the corrugated expansion joint type compensator is too large and is far larger than the compensation amount of the corrugated expansion joint type compensator, so that the maximum distance of disconnection of the internal tracks of the two pipeline ends is basically equal to the compensation amount, and the method is beneficial to laying of the tracks and other equipment in the pipeline.
Drawings
FIG. 1 is a schematic illustration in semi-section of an interface structure of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example 1: FIG. 1 shows this embodiment
The straight pipe end 1 and the pipe socket end 5 are made of steel, or can be made of common carbon steel, stainless steel, weather-resistant steel or other materials capable of sealing gas. One of the two butted pipeline ends is fixed, and the other can move along the axial direction. The outer surface sealing layer 4 of the pipe body is laid along the outer diameter surface of the straight mouth end 1 of the pipe, and the outer surface sealing layer 4 of the pipe body needs to have certain wear resistance, elasticity and self-lubricating property. The sealing layer 4 on the outer surface of the tube body can be made of expanded graphite, carbon fiber reinforced polytetrafluoroethylene or the like. The expanded graphite has excellent performances such as good compressibility, rebound resilience, self-adhesion, low density and the like, and can be used for a long time under severe working conditions of high temperature and high corrosiveness; carbon fiber reinforced polytetrafluoroethylene is a dynamic sealing material with excellent performance. The hard pallet ring 3 needs to have a certain strength and rigidity, and can be made of steel or other materials capable of achieving similar performance. The hard pallet ring 3 is mounted inside the pipe socket end 5. The section of the hard supporting plate ring 3 is comb-shaped, and annular soft sealing blades 2 are also arranged in the gaps of the comb-tooth plates. The number of the comb plate gaps of the hard supporting plate ring 3 is plural, and the number of the annular soft sealing blades 2 correspondingly arranged is plural. The diameter of the inner annular surface of the annular soft sealing blade plate 2 is smaller than that of the inner annular surface of the hard supporting plate ring 3, so that the comb-shaped inner annular surface of the hard supporting plate ring 3 is in clearance fit with the sealing layer 4 on the outer surface of the pipe body, and all the annular soft sealing blade plates 2 can be in contact with the sealing layer 4 on the outer surface of the pipe body. The comb plate clearance of the hard support plate ring 3 is larger than the thickness of the annular soft sealing blade plate 2, so that the annular soft sealing blade plate 2 has enough elastic deformation after being installed, on one hand, the elastic force can enable the inner diameter of the annular soft sealing blade plate 2 to be tightly attached to the outer surface sealing layer 4 of the pipe body so as to achieve sealing, and on the other hand, the annular soft sealing blade plate 2 or the outer surface sealing layer 4 of the pipe body can be automatically compensated for elastic deformation after being worn, and leakage is prevented. The annular soft sealing blade plate 2 can be made of various materials such as rubber or polyurethane elastomer, and the performance of the annular soft sealing blade plate can be adjusted to ensure that the annular soft sealing blade plate has enough elasticity and plasticity to be tightly attached to the sealing layer 4 on the outer surface of the pipe body, and can also be properly elastically deformed and reserved. In addition, because the inside of the pipeline is in a vacuum environment, the outside of the pipeline is in a normal pressure environment, the pressure intensity of the outside of the pipeline is larger than that of the inside of the pipeline, and the inner diameter end face of the annular soft sealing blade plate 2 is also clung to the sealing layer 4 on the outer surface of the pipeline under the action of air pressure, so that the sealing effect of the annular soft sealing blade plate is enhanced.
The pipe socket end may also be a larger diameter joint pipe section attached to the pipe end.
The implementation process comprises the following steps: under the influence of the outside world, the movable pipeline port can generate axial displacement, so that the pipeline socket end relatively generates axial movement, the comb-shaped sealing structure formed by the comb-shaped hard support plate ring 3 and the annular soft sealing blade plate 2 which are arranged on the pipeline socket end 5 and the pipeline outer surface sealing layer 4 on the pipeline straight port end 1 relatively move, the annular soft sealing blade plate 2 overcomes the friction force generated by elastic contact with the pipeline end surface sealing layer 4 and slides on the contact surfaces of the two, and the pipeline outer surface sealing layer 4 has a self-lubricating function, so that the friction force is not too large. After the annular soft sealing blade plate 2 or the sealing layer 4 on the outer surface of the pipe body is worn, the elastic deformation compensation of the annular soft sealing blade plate 2 can be used for ensuring that the sealing structure is always kept in close contact. Under the action of different air pressure environments inside and outside the pipeline, the annular soft sealing blade plate 2 is also clung to the sealing layer 4 on the outer surface of the pipe body, so that sealing is better realized. The sealing structure with multiple contacts can also form a labyrinth effect, and the sealing effect is enhanced by throttling layer by layer. This process compensates for the displacement created by the tubing and also ensures sealing.
Claims (1)
1. The utility model provides a flexible compensation interface of vacuum traffic pipeline, includes pipeline straight mouth end (1), dock pipe enlarged pipeline bellmouth end (5), its characterized in that: the outer wall of the connecting part of the straight mouth end (1) of the pipeline is provided with a sealing layer (4) on the outer surface of the pipeline, the inner wall of the pipeline at the connecting part of the bell mouth end (5) of the pipeline is provided with a hard supporting plate ring (3) with a comb-tooth-shaped radial section, annular soft sealing blades (2) are arranged in comb-tooth-shaped gaps of the hard supporting plate ring (3), the outer diameter of each annular soft sealing blade (2) is fixed with the inner diameter of the hard supporting plate ring (3), and the inner diameter end face of each annular soft sealing blade (2) is in contact with the sealing layer (4) on the outer surface of the pipeline; the inner surface of the comb-shaped ring of the hard supporting plate ring (3) is in clearance fit with a sealing layer (4) on the outer surface of the pipe body of the straight port end (1) of the pipe; the comb tooth gaps of the hard support plate ring (3) are larger than the thickness of the annular soft sealing blade plates (2), at least two comb tooth plate gaps of the hard support plate ring (3) are arranged, and corresponding annular soft sealing blade plates (2) are arranged in each comb tooth plate gap; the annular soft sealing blade plate (2) is obliquely arranged along the extending direction of the straight port end (1) of the pipeline, and the comb-tooth-shaped ring of the hard supporting plate ring (3) is obliquely arranged along the extending direction of the straight port end (1) of the pipeline; the inside of the pipeline is in a vacuum environment, the outside of the pipeline is in a normal pressure environment, a pressure difference exists between the inside and the outside of the pipeline, and the annular soft sealing blade (2) can be tightly attached to the sealing layer on the outer surface of the pipeline under the action of air pressure; the maximum distance of the disconnection of the inner tracks of the two pipeline ends is equal to the compensation quantity, the track laying in the pipeline is facilitated, and the included angle between the inner diameter end surface of the annular soft sealing blade plate (2) and the sealing layer (4) on the outer surface of the pipeline body of the straight opening end of the pipeline is larger than 60 degrees; two butted pipeline ports at the joint of the pipeline straight port end (1) and the pipeline socket end (5), wherein one port is provided with an axial movable supporting point, and the other port is a fixed supporting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206267.0A CN109058639B (en) | 2018-10-17 | 2018-10-17 | Telescopic compensation interface of vacuum traffic pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206267.0A CN109058639B (en) | 2018-10-17 | 2018-10-17 | Telescopic compensation interface of vacuum traffic pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058639A CN109058639A (en) | 2018-12-21 |
| CN109058639B true CN109058639B (en) | 2024-01-26 |
Family
ID=64765050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811206267.0A Active CN109058639B (en) | 2018-10-17 | 2018-10-17 | Telescopic compensation interface of vacuum traffic pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058639B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780374B (en) * | 2019-03-20 | 2021-09-17 | 哈尔滨金凌科技有限公司 | High-strength polyethylene pipe for building |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7506525U (en) * | 1975-03-01 | 1980-09-11 | Jenaer Glaswerk Schott & Gen., 6500 Mainz | PIPE INTERFACE WITH BELLOWS |
| RU2046248C1 (en) * | 1991-01-18 | 1995-10-20 | Акционерное общество открытого типа "Магнитогорский институт по проектированию металлургических заводов" | Telescopic compensator |
| EP0860590A1 (en) * | 1997-02-25 | 1998-08-26 | FLEXIDER S.p.A. | A flexible tube with a corrugated wall for uncoupling motor-vehicle exhaust pipes |
| CN1603672A (en) * | 2004-11-02 | 2005-04-06 | 廖仲力 | Stainless steel piston type pipeline temperature compensator |
| CN2739456Y (en) * | 2004-11-02 | 2005-11-09 | 廖仲力 | Stainless steel piston type pipeline temperature compensating device |
| WO2006029601A1 (en) * | 2004-09-17 | 2006-03-23 | Fey Lamellenringe Gmbh & Co. Kg | Axial and radial play and angle compensation of a tolerating pipe connection |
| CN102128331A (en) * | 2010-01-20 | 2011-07-20 | 张耀平 | Setting of temperature stress relieving gaps of vacuum pipeline |
| WO2015039832A1 (en) * | 2013-09-20 | 2015-03-26 | Siemens Aktiengesellschaft | Pipe connection arrangement, high-pressure fluid line system of a double internal combustion engine, double internal combustion engine and use of a tension nut |
| CN105526453A (en) * | 2016-01-13 | 2016-04-27 | 江苏新方圆电气设备制造有限公司 | Novel high-temperature-resistant rotary compensator |
| GB201620711D0 (en) * | 2016-12-06 | 2017-01-18 | Teconnex Ltd | Coupling apparatus for method of use thereof |
| CN206988639U (en) * | 2017-07-05 | 2018-02-09 | 大连益多管道有限公司 | Non-maintaining super reinforcement level reciprocating hermetic sleeve expansion joint |
| CN207213467U (en) * | 2017-07-05 | 2018-04-10 | 大连益多管道有限公司 | Super reinforcement level reciprocating hermetic sleeve expansion joint can be safeguarded |
| CN209054234U (en) * | 2018-10-17 | 2019-07-02 | 西南交通大学 | A kind of flexible compensation interface of vacuum traffic pipeline |
-
2018
- 2018-10-17 CN CN201811206267.0A patent/CN109058639B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7506525U (en) * | 1975-03-01 | 1980-09-11 | Jenaer Glaswerk Schott & Gen., 6500 Mainz | PIPE INTERFACE WITH BELLOWS |
| RU2046248C1 (en) * | 1991-01-18 | 1995-10-20 | Акционерное общество открытого типа "Магнитогорский институт по проектированию металлургических заводов" | Telescopic compensator |
| EP0860590A1 (en) * | 1997-02-25 | 1998-08-26 | FLEXIDER S.p.A. | A flexible tube with a corrugated wall for uncoupling motor-vehicle exhaust pipes |
| WO2006029601A1 (en) * | 2004-09-17 | 2006-03-23 | Fey Lamellenringe Gmbh & Co. Kg | Axial and radial play and angle compensation of a tolerating pipe connection |
| CN1603672A (en) * | 2004-11-02 | 2005-04-06 | 廖仲力 | Stainless steel piston type pipeline temperature compensator |
| CN2739456Y (en) * | 2004-11-02 | 2005-11-09 | 廖仲力 | Stainless steel piston type pipeline temperature compensating device |
| CN102128331A (en) * | 2010-01-20 | 2011-07-20 | 张耀平 | Setting of temperature stress relieving gaps of vacuum pipeline |
| WO2015039832A1 (en) * | 2013-09-20 | 2015-03-26 | Siemens Aktiengesellschaft | Pipe connection arrangement, high-pressure fluid line system of a double internal combustion engine, double internal combustion engine and use of a tension nut |
| CN105526453A (en) * | 2016-01-13 | 2016-04-27 | 江苏新方圆电气设备制造有限公司 | Novel high-temperature-resistant rotary compensator |
| GB201620711D0 (en) * | 2016-12-06 | 2017-01-18 | Teconnex Ltd | Coupling apparatus for method of use thereof |
| CN206988639U (en) * | 2017-07-05 | 2018-02-09 | 大连益多管道有限公司 | Non-maintaining super reinforcement level reciprocating hermetic sleeve expansion joint |
| CN207213467U (en) * | 2017-07-05 | 2018-04-10 | 大连益多管道有限公司 | Super reinforcement level reciprocating hermetic sleeve expansion joint can be safeguarded |
| CN209054234U (en) * | 2018-10-17 | 2019-07-02 | 西南交通大学 | A kind of flexible compensation interface of vacuum traffic pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 超高速真空管道交通技术发展现状与趋势;金茂菁;黄玲;;科技中国(11);7-9 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109058639A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103557389B (en) | Rotary joint | |
| CN109058639B (en) | Telescopic compensation interface of vacuum traffic pipeline | |
| CN204099806U (en) | Anti-deformation double seal sleeve barrel compensator | |
| RU2431072C1 (en) | Bellows compensator for channel-free laying | |
| CN206958255U (en) | A kind of two-shot elastomer combination sealing | |
| CN104089041B (en) | The box-like hermetically-sealed construction of valve sets and method thereof | |
| CN103603954A (en) | Dynamical sealing system with heavy caliber in vacuum and low temperature environment | |
| CN209054234U (en) | A kind of flexible compensation interface of vacuum traffic pipeline | |
| CN207213467U (en) | Super reinforcement level reciprocating hermetic sleeve expansion joint can be safeguarded | |
| CN202109118U (en) | Sealing structure of sleeve compensator | |
| CN109058640B (en) | Vacuum traffic pipeline expansion compensation interface | |
| CN200940752Y (en) | High pressure resistance rotary compensator for pipeline | |
| CN211118097U (en) | Double-metal composite pipe for leakage-proof water delivery pipeline | |
| CN206988639U (en) | Non-maintaining super reinforcement level reciprocating hermetic sleeve expansion joint | |
| CN104006243B (en) | A kind of high-temperature high-speed rotary joint | |
| CN208982862U (en) | A kind of vacuum traffic pipeline extension compensation interface | |
| CN2872045Y (en) | Self-sealed compensator of straight-embedded socket | |
| CN207830809U (en) | A kind of polyurethane heat-insulation compensator | |
| CN203948678U (en) | The box-like sealing configuration of a kind of valve sets | |
| CN204512769U (en) | Telescopic expanded telescopic joint | |
| CN211398967U (en) | Pipeline compensator with damping rings | |
| CN203847868U (en) | Coal injection connecting pipe of rotary kiln and expansion joint for coal injection connecting pipe | |
| CN204403632U (en) | Contact-type joint seal arrangement | |
| CN102128331A (en) | Setting of temperature stress relieving gaps of vacuum pipeline | |
| CN201651622U (en) | Reducing special-shaped flexible rubber joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |