WO2013120459A1 - Dispositif de raccordement de tuyau flexible et son procédé d'utilisation - Google Patents

Dispositif de raccordement de tuyau flexible et son procédé d'utilisation Download PDF

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Publication number
WO2013120459A1
WO2013120459A1 PCT/CN2013/071653 CN2013071653W WO2013120459A1 WO 2013120459 A1 WO2013120459 A1 WO 2013120459A1 CN 2013071653 W CN2013071653 W CN 2013071653W WO 2013120459 A1 WO2013120459 A1 WO 2013120459A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal bellows
flexible
connecting device
metal
bellows
Prior art date
Application number
PCT/CN2013/071653
Other languages
English (en)
Chinese (zh)
Inventor
刘阳
Original Assignee
北京兆阳能源技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 北京兆阳能源技术有限公司 filed Critical 北京兆阳能源技术有限公司
Publication of WO2013120459A1 publication Critical patent/WO2013120459A1/fr

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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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/22—Multi-channel hoses
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Definitions

  • the invention relates to a flexible connecting device for pipelines, in particular to a flexible connecting device for pipelines in the field of solar thermal utilization.
  • the hose is an important connecting member in engineering technology and is composed of a flexible pipe and a joint.
  • Hose is used as a compensating element, sealing element, connecting element and damping element in various gas and infusion piping systems as well as length, temperature, position and angle compensation systems. It is used in aerospace, petrochemical, mining electronics, mechanical shipbuilding. , health care, textile electronics, energy construction and other fields.
  • two parallel collector terminals need to connect two parallel collectors in series through a flexible connection of the pipeline to complete the collector working. Returning; or the output terminal of a single collector transports the heated flowing medium into the branch pipe. Due to the particularity of the groove tracking, the collector changes with the position of the sun, but the relative position of the branch is fixed. The two need to be connected to each other through a flexible connecting device.
  • the existing flexible connection is designed to three-dimensionally connect a spherical movable joint or a bellows structure.
  • the former has a complicated structure, is inconvenient to produce and install, and is costly, although there is no possibility of avoiding the possibility of leakage; the latter is connected by a bellows, although The structure is simple and easy to install, but it has the possibility of sudden leakage, that is, after repeated work for a certain period of time, after many times of fatigue and tortuosity, a certain part of the rupture occurs, and a sudden large-scale leakage occurs, which seriously affects the operation safety; At the same time, it is still difficult to achieve good insulation during the work process, and it is impossible to control the loss of system heat energy well.
  • the embodiment of the present invention overcomes the above problems existing in the prior art, and provides a flexible connecting device for a pipeline which can be applied to various fields, in particular, solar heat utilization.
  • the invention provides a flexible connecting device for pipelines.
  • the pipeline flexible connecting device comprises at least one set of pipeline flexible connecting device units, each set of device units comprising not less than two layers of interposed metal bellows and connecting members respectively located at two ends of the metal bellows, characterized in that At least one enclosed space is formed between the interposed metal bellows.
  • the metal bellows comprises a bellows structure and a straight length metal pipe of a certain length at the end.
  • the connecting member is a flange connector or a threaded connector or a welded connector.
  • the connecting member is a straight connecting piece or a vertical bending connecting piece or a corner connecting connecting piece.
  • the at least two layers of interposed metal bellows are respectively a first metal bellows and a second metal bellows arranged concentrically inside and outside.
  • At least one layer of the metal bellows is disposed with a reinforcing layer.
  • the reinforcing layer is woven by synthetic fiber or metal wire.
  • At least one enclosed space formed between the at least two layers of interposed metal bellows is in a vacuum state.
  • the space vacuum state is obtained by sealing after vacuuming or by continuous or intermittent vacuuming.
  • pipeline flexible connecting device can be applied to the flexible connection of the collector pipe in the field of solar heat utilization to obtain good safety performance.
  • At least one temperature sensor is disposed on the outer wall of the outermost bellows or the reinforcing layer wall of the layer of bellows to detect the operation of the flexible connecting device of the pipe.
  • the embodiment of the invention further provides a method for using a flexible connecting device of a pipeline, and the flexible connection of the pipeline
  • the device comprises not less than two layers of metal bellows and two connecting members respectively located at two ends of the metal bellows, wherein at least one enclosed space is formed between the mutually interposed metal bellows, and the metal of the flexible connecting device in the pipeline
  • At least one temperature sensor is disposed on the corrugated layer or the reinforcing layer wall, and the method includes monitoring the temperature during the running process, and determining the leaking alarm of the flexible connecting device of the pipeline by judging the obtained temperature change information.
  • the flexible connecting device of the pipeline of the embodiments of the present invention has the following advantages over the conventional flexible connecting device: 1. Low cost: simple structure and easy installation; 2. Long service life: multiple layers of corrugated structure, multiple anti-leakage Ability to avoid sudden large-scale leakage and maximize safety performance; 3. High strength: The outer wall of the metal bellows is arranged with at least one reinforcing layer to enhance the tensile resistance of the flexible connecting device and the ability to resist internal pressure.
  • FIG. 1 is a schematic structural view of a flexible connecting device for a pipe according to a first embodiment of the present invention
  • Figure 2 is a partially enlarged schematic view of the flexible connecting device of the pipe shown in Figure 1;
  • Figure 3 is a schematic view showing the bending state of the flexible connecting device of Figure 1;
  • FIG. 4 is a schematic structural view of a flexible connecting device for a pipe according to a second embodiment of the present invention.
  • Fig. 5 is a structural schematic view of a flexible connecting device for a pipe according to a third embodiment of the present invention. detailed description
  • FIG. 1 is a schematic view showing the structure of a flexible connecting device for a pipe according to a first embodiment of the present invention.
  • the pipeline flexible connecting device is composed of at least one set of pipeline flexible connecting device units, each set of device units is composed of not less than two layers of metal bellows and two end connecting members, and mutually formed metal bellows are formed between each other.
  • the metal bellows comprises a bellows structure and a straight metal pipe of a certain length at the end; wherein the at least two layers of the metal bellows are arranged outside the at least one metal bellows Enhancement layer.
  • the single set of device units of the flexible connecting device of the pipeline comprises a first metal bellows 1 , a first reinforcing layer 2 disposed adjacent to the outside of the first metal bellows 1 , and a concentric arrangement of the first reinforcing layer 2 .
  • the first metal bellows 1 and the second metal bellows 3 respectively comprise a bellows structure and a straight metal pipe of a certain length at the end (the first straight metal pipe 5 or the second straight metal pipe 6);
  • the outer diameter of the segment metal pipe 5 is smaller than the inner diameter of the second straight metal pipe 6.
  • the connecting member 8 of the first metal bellows 1 and the end of the second metal bellows 3 may be a flange connecting member or a threaded connecting member or a welded connecting member; specifically, a straight connecting member or a vertical bending connecting member or an angled portion Bend the connector.
  • the first reinforcement layer 2 is placed in close proximity to the outside of the first metal bellows 1 and by special means, for example by welding or other press-fitting
  • the manner is fixed to the outer wall of the first straight metal pipe 5.
  • the second reinforcement layer tube 4 is disposed adjacent to the outside of the second metal bellows 3, and is fixed to the outer wall of the second straight-section metal tube 6 by a special means, for example, by welding, to strengthen the outer metal bellows.
  • Mechanical strength such as tensile compressive strength.
  • the reinforcing layer (for example, the first reinforcing layer 2 and the second reinforcing layer 4) is woven by synthetic fiber or metal wire.
  • a support structure supporting the two between the first metal bellows 1 and the second metal bellows 3 is arranged at intervals It is also possible to obtain a vacuum state by vacuuming the space between the first metal bellows 1 and the second metal bellows 3 or by vacuuming continuously or intermittently to reduce the first metal bellows 1 to the second The convection of the metal bellows 3 is released.
  • a heat insulating material with low thermal conductivity is disposed outside the second reinforcing layer 4 or the second metal bellows 3 to reduce heat released from the flexible connecting device of the pipeline to the outside.
  • At least one temperature sensor is disposed on the outer wall of the outermost bellows or the reinforcing layer wall of the layer of bellows to detect leakage problems of the flexible connecting device of the pipeline, such as the flexible connecting device of the pipeline shown in FIG.
  • At least one temperature sensor 7 is arranged on the second metal bellows 3 or the second reinforcement layer 4.
  • the high temperature fluid medium flows into the space between the first metal bellows 1 and the second metal bellows 3, directly with the second metal corrugation.
  • the inner wall of the tube 3 is in contact, causing the temperature sensor 7 on the outer wall of the tube or its reinforcing layer to rise rapidly; further, when the second metal bellows 3 leaks, and the first metal bellows 1 does not leak, the outer portion Air will enter the enclosed space between the first metal bellows 1 and the second metal bellows 3 through the second metal bellows 3 to form convective heat conduction, and more heat is taken from the outer wall of the first metal bellows 1 The transfer to the inner wall of the second metal bellows 3 also causes the temperature sensor measurement on the wall to rise.
  • the two cases can be judged by analyzing the measured curve of the temperature parameter, providing a basis for further on-site inspection processing; and even if the two cases occur separately (the two situations may occur simultaneously) Very low), there is also one of the second metal bellows 3 or the first metal bellows 1 that does not leak, can play a sealing role, does not cause a large-scale leakage accident of internal fluids, and enhances operational safety; As long as the above leakage situation is detected on site and processed in time, the two-layer metal bellows structure can greatly improve the system operation safety.
  • the position of the temperature sensor 7 should be favorable for The above two leakage situations are found in time, for example, arranged near the lowest point of the gravity direction.
  • the single device unit of the flexible connecting device of the pipeline may comprise a plurality of metal bellows which are mutually sheathed, and the outer wall of the single metal bellows may be arranged with at least one reinforcing layer; In at least one enclosed space, at least one enclosed space is subjected to vacuuming; the flexible connecting device of the pipe can be applied to a flexible connection of a collector circuit in the field of solar thermal utilization.
  • FIG. 1 shows a first straight metal pipe 5 and a second straight metal pipe corresponding to the first metal bellows and the second metal bellows respectively. 6 , the two are connected to each other to form a closed space in the space of the first metal bellows and the second metal bellows.
  • Figure 3 is a schematic view showing the bending state of the flexible connecting device of Figure 1. As shown in FIG. 3, the entire first metal bellows 1 and the second metal bellows 3 exhibit a curved structure during operation, and an enclosed space is formed inside, and a temperature sensor 7 is disposed outside the flexible connecting device of the pipeline to Detect the operation of the flexible connecting device of the pipeline.
  • FIG. 4 is a schematic structural view of a flexible connecting device for a pipe according to a second embodiment of the present invention.
  • a plurality of first metal bellows 1 are disposed together in a second metal bellows 3, and at least one layer of the first reinforcing layer 2 is disposed on the outside of each of the first metal bellows 1.
  • the first straight segment metal pipe is arranged, the plurality of juxtaposed first straight segment metal pipes are connected to the header, and the other end of the header tank is connected to the second straight segment metal pipe, and the second straight segment metal pipe flows through After passing through the buffer of the header, the flowing medium flows through the first straight metal tubes juxtaposed into the first metal bellows 1 to complete the flow of the working medium.
  • the structure has good structural flexibility and is suitable for places with special flexibility requirements.
  • a temperature sensor 7 may be disposed on the wall of the second metal bellows 3 or its second reinforcing layer 4.
  • Fig. 5 is a structural schematic view showing a flexible connecting device for a pipe according to a third embodiment of the present invention.
  • the pipe flexible connecting device comprises a plurality of pipe flexible connecting device units, wherein each pipe flexible connecting device unit comprises a first metal bellows 1 which is disposed adjacent to the outside of the first metal bellows 1 a first reinforcing layer 2, a second metal bellows 3 concentrically arranged outside the first metal bellows 1, and a patch a second reinforcing layer 4 disposed outside the second metal bellows 3; wherein the first metal bellows 1 and the second metal bellows 3 respectively comprise a bellows structure and a first straight metal tube or a second end of a certain length Straight-section metal pipe; and the outer diameter of the first straight-section metal pipe is smaller than the inner diameter of the second straight-section metal pipe; the structure has better structural flexibility.
  • a temperature sensor is disposed on each of the second metal bellows 3 or each of the second reinforcing layers 4 walls.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)

Abstract

L'invention concerne un dispositif de raccordement de tuyau flexible, qui est formé d'au moins un groupe d'unités de dispositifs de raccordement de tuyau flexible. Chaque groupe d'unités de dispositifs est formé de deux ou plus tuyaux métalliques à soufflet emmanchés l'un dans l'autre et d'éléments de raccordement aux deux extrémités. Au moins un espace clos est formé entre les tuyaux métalliques à soufflet emmanchés l'un dans l'autre. Au moins un capteur de température est disposé sur la paroi d'une couche de soufflet métallique ou une couche d'amélioration du dispositif de raccordement de tuyau flexible. Pendant le fonctionnement, la température est contrôlée, et en analysant les informations de changement de température, l'alarme de fuite pour le dispositif de raccordement de tuyau flexible est mise en œuvre. Le dispositif est capable de fonctionner en toute sécurité et a un faible coût, une longue vie en service, une résistance élevée, une faible déperdition de chaleur, une gouvernabilité et une gouvernabilité de contrôle flexible souhaitable.
PCT/CN2013/071653 2012-02-17 2013-02-19 Dispositif de raccordement de tuyau flexible et son procédé d'utilisation WO2013120459A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210038010.5 2012-02-17
CN201210038010.5A CN103256440B (zh) 2012-02-17 2012-02-17 一种管路柔性连接装置及其使用方法

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Publication Number Publication Date
WO2013120459A1 true WO2013120459A1 (fr) 2013-08-22

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CN (1) CN103256440B (fr)
WO (1) WO2013120459A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN103912731A (zh) * 2014-04-18 2014-07-09 辽宁久大管业有限公司 管束泄露报警直埋预制保温层独立密封蒸汽管及制造方法
EP3567290A1 (fr) * 2018-05-08 2019-11-13 Witzenmann GmbH Système de surveillance permettant de surveiller les états de fonctionnement d'un composant en mouvement
EP3670997A1 (fr) * 2018-12-19 2020-06-24 Nexans Conduite flexible isolée sous vide

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EP3279543B1 (fr) * 2016-08-03 2019-02-27 Nexans Procede de fonctionnement d'une conduite
CN106870846A (zh) * 2017-04-22 2017-06-20 江苏亚星波纹管有限公司 一种多用型波纹管接头
CN111336328A (zh) * 2020-04-14 2020-06-26 中船重工鹏力（南京）超低温技术有限公司 一种具有减震功能的低温液体传输管
CN116625437B (zh) * 2023-07-21 2023-10-03 沈阳仪表科学研究院有限公司 一种多参数金属波纹管在线监测装置及方法

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CN101990618A (zh) * 2008-04-03 2011-03-23 阿文戈亚太阳能新技术公司 用于太阳能设备的接收管中玻璃与金属之间的机械密封连接装置
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CN103912731A (zh) * 2014-04-18 2014-07-09 辽宁久大管业有限公司 管束泄露报警直埋预制保温层独立密封蒸汽管及制造方法
EP3567290A1 (fr) * 2018-05-08 2019-11-13 Witzenmann GmbH Système de surveillance permettant de surveiller les états de fonctionnement d'un composant en mouvement
EP3670997A1 (fr) * 2018-12-19 2020-06-24 Nexans Conduite flexible isolée sous vide
JP2020101280A (ja) * 2018-12-19 2020-07-02 ネクサン 可撓性真空断熱ライン
US11796118B2 (en) 2018-12-19 2023-10-24 Nexans Flexible vacuum-insulated line
JP7495789B2 (ja) 2018-12-19 2024-06-05 ネクサン 可撓性真空断熱ライン

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