CN106885089B - A kind of cold heat bidirectional protective device and method for jet chimney - Google Patents
A kind of cold heat bidirectional protective device and method for jet chimney Download PDFInfo
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- CN106885089B CN106885089B CN201710121359.8A CN201710121359A CN106885089B CN 106885089 B CN106885089 B CN 106885089B CN 201710121359 A CN201710121359 A CN 201710121359A CN 106885089 B CN106885089 B CN 106885089B
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- 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
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of cold heat bidirectional protective device and methods for jet chimney.Described device, which is applied to conveying pipe, to be prevented from condensing and overheating technical field simultaneously.Including insulation material layer, phase-change material layers, memory alloy layer, memory alloy wire, phase-change material capsule.Reduce influence of the ambient temperature to pipeline and steam using insulation material layer；It keeps pipeline and steam temperature-resistant under long-time low temperature environment using phase-change material layers solidification heat release, prevents steam condensate corrosion pipeline；It absorbs heat with strengthening heat transfer and the rapid, high volume in heating region using the memory-alloy mesh for being attached to pipeline outer wall and the phase-change material capsule being connected with memory-alloy mesh via memory alloy wire, avoids superheating phenomenon.Solves steam stable conditions sex chromosome mosaicism while effectivelying prevent steam to condense and overheat.
Description
Technical field
The invention belongs to conveying pipes to prevent from condensing and overheating technical field simultaneously, and in particular to one kind being used for jet chimney
Cold heat bidirectional protective device and method.
Background technology
Steam is widely used in various mechanical devices and energy transmission occasion, for example, aircraft carrier ejector, for heat and generating power
Deng.Steam would ordinarily be encountered in transportational process caused by heat dissipation condensation, the hot-spot caused by various factors and by
The problems such as condensing and crossing the fluctuation of operating conditions of thermal initiation.Either steam condensation or overheat can all damage conveying pipe.
And the fluctuation of steam operating mode can cause to seriously affect to the stability of system and safety.Prevent steam condensation, overheat and with
The fluctuation of operating conditions of generation have a very important significance.
At present for the common means of steam condensation problem be in pipeline outer wrapping heat-insulating material, but work as external environment temperature
When degree continues too low, the phenomenon that steam condenses in pipeline still can not be avoided.And the problem of for hot-spot, due to heat spot
It can not accurately prejudge, it is difficult to find effective solution.The case where condensation and problems of excessive heat all can not be solved effectively
Under, the fluctuation problem of steam operating mode can not also avoid naturally.
Invention content
Present invention difficult point in view of the above technology, it is proposed that a kind of for the cold heat bidirectional protective device of jet chimney and side
Method reduces influence of the ambient temperature to pipeline and steam using insulation material layer；It is protected using phase-change material layers solidification heat release
It is temperature-resistant under long-time low temperature environment to hold pipeline and steam, prevents steam condensate corrosion pipeline；Using being attached to outside pipeline
The memory-alloy mesh of wall and the phase-change material capsule being connected with memory-alloy mesh via memory alloy wire strengthen heating region
It conducts heat and simultaneously absorbs heat to rapid, high volume, avoid superheating phenomenon.Solves steaming while effectivelying prevent steam to condense and overheat
Vapour stable conditions sex chromosome mosaicism.
A kind of cold heat bidirectional protective device for jet chimney, it is characterised in that including insulation material layer, phase-change material
Layer, memory alloy layer, memory alloy wire, phase-change material capsule；The insulation material layer is process by heat-insulating material, with one heart
It is wrapped in jet chimney periphery；The phase-change material layers are higher than the solid-liquid phase change material structure of steam condensation temperature by solidification point
At full of between insulation material layer and jet chimney outer wall；The memory-alloy mesh is attached to jet chimney outer wall surface, by
Transition temperature is process less than the marmem of steam superheating temperature, when steam heats up and triggers transition temperature, note
Recall alloy network contraction distortion, when temperature recurrence is normal, memory-alloy mesh restores to the original state；The memory alloy wire is closed with memory
The material identical of gold net；The phase-change material capsule has the film package fusing point of high thermal conductivity coefficient low by metal or graphene etc.
It is made, is connected with memory-alloy mesh by memory alloy wire, with memory-alloy mesh and note in the phase-change material of steam superheating temperature
Recall the deformation of B alloy wire and moves.
The workflow of described device includes：When pipeline for a long time under the low temperature environment when, insulation material layer temperature by
Gradually reduce, until the setting temperature of triggering phase-change material layers, phase-change material layers solidify heat release and keep pipeline and vapor (steam) temperature constant,
Steam condensate corrosion pipeline is prevented, when environment temperature is gone up, phase-change material layers are endothermic melting, restore defencive function；Work as part
When steam heats up and triggers transition temperature, the memory-alloy mesh being attached on jet chimney outer wall and the memory being attached thereto are closed
Contraction distortion is pulled a large amount of phase-change material capsule to be enriched in the region of steam heating by spun gold, strengthens the heat transfer in heating region
And rapid, high volume absorb heat, avoid superheating phenomenon, when temperature returns it is normal when, memory-alloy mesh and memory alloy wire restore
Original state.
Compared with prior art, the present invention having the advantages that：
(1) when pipeline is under low temperature environment for a long time, pipeline and steaming are kept using phase-change material layers solidification heat release
Vapour is temperature-resistant under long-time low temperature environment, prevents steam condensate corrosion pipeline.
(2) available to be attached to the memory-alloy mesh of pipeline outer wall and via memorial alloy when steam partial heats up
The phase-change material capsule that silk is connected with memory-alloy mesh absorbs heat with strengthening the heat transfer in heating region and rapid, high volume, avoids overheat existing
As occurring.
(3) described device solves steam stable conditions sex chromosome mosaicism while effectivelying prevent steam to condense and overheat.(4)
The present apparatus is not necessarily to consume any energy, and can unlimited cycle operation.
(5) present apparatus automatically and accurately orientation problem region and can realize cold heat bidirectional protective.
(6) organic phase change material is inexpensive, environmentally friendly, property is stable, long lifespan, fusing point are widely distributed, to job requirement and ring
Border is adaptable.
(7) can arbitrarily change insulation material layer, phase-change material layers, memory-alloy mesh and phase-change material capsule proportioning and
Specification is rationally designed and is allocated according to actual needs.
Description of the drawings
Fig. 1 is a kind of partial schematic diagram of cold heat bidirectional protective device for jet chimney
The working state figure of device when Fig. 2 is pipeline local heating
In attached drawing, each list of parts is as follows：
1：Insulation material layer 2：Phase-change material layers
3：Memory-alloy mesh 4：Memory alloy wire
5：Phase-change material capsule 6：Jet chimney.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
As shown in Figure 1, a kind of cold heat bidirectional protective device for jet chimney includes insulation material layer (1), phase transformation material
The bed of material (2), memory alloy layer (3), memory alloy wire (4), phase-change material capsule (5).The insulation material layer (1) is by heat conduction
The extremely low heat-insulating material of coefficient is process, and is wrapped in jet chimney (6) periphery with one heart；The phase-change material layers (2) are by coagulating
Solid point is constituted higher than the solid-liquid phase change material of steam condensation temperature, full of insulation material layer (1) and jet chimney (6) outer wall it
Between；The memory-alloy mesh (3) is attached to jet chimney (6) outer wall surface, by transition temperature less than steam superheating temperature
Marmem is process, when steam heats up and triggers transition temperature, memory-alloy mesh contraction distortion, when temperature returns
When normal, memory-alloy mesh restores to the original state；The material identical of the memory alloy wire (4) and memory-alloy mesh (3)；Described
Phase-change material capsule (5) is had the phase that the film package fusing point of high thermal conductivity coefficient is less than steam superheating temperature by metal or graphene etc.
Become material to be made, be connected with memory-alloy mesh (3) by memory alloy wire (4), with memory-alloy mesh (3) and memory alloy wire
(4) deformation and move.
As shown in Figure 1, under normal circumstances, phase-change material layers (2) are in molten state, phase-change material capsule (6) is uniform
It is dispersed in phase-change material layers (2), when pipeline is under low temperature environment for a long time, insulation material layer (1) temperature continuously decreases,
Until the setting temperature of triggering phase-change material layers (2), phase-change material layers (2) solidify heat release and keep pipeline (6) and vapor (steam) temperature not
Become, prevent steam condensate corrosion pipeline, when environment temperature is gone up, phase-change material layers (2) are endothermic melting, restore defencive function；
As shown in Fig. 2, when steam partial heats up and triggers transition temperature, the memory-alloy mesh that is attached on jet chimney (6) outer wall
(3) and the memory alloy wire (4) that is attached thereto is by contraction distortion, and a large amount of phase-change material capsule (6) is pulled to be enriched in steam
The region of heating absorbs heat, avoids superheating phenomenon with strengthening the heat transfer in heating region and rapid, high volume, when temperature returns normally
When, memory-alloy mesh (3) and memory alloy wire (4) restore to the original state.
Claims (2)
1. a kind of cold heat bidirectional protective device for jet chimney, it is characterised in that including insulation material layer (1), phase transformation material
The bed of material (2), memory-alloy mesh (3), memory alloy wire (4), phase-change material capsule (5), the insulation material layer (1) is by exhausted
Hot material is process, and is wrapped in jet chimney (6) periphery with one heart；The phase-change material layers (2) are higher than steam by solidification point
The solid-liquid phase change material of condensation temperature is constituted, full of between insulation material layer (1) and jet chimney (6) outer wall；The memory
Alloy network (3) is attached to jet chimney (6) outer wall surface, and the marmem by transition temperature less than steam superheating temperature adds
Work forms, and when higher than transition temperature, memory-alloy mesh contraction distortion, when temperature is less than transition temperature, memory-alloy mesh is extensive
Restore shape；The material identical of the memory alloy wire (4) and memory-alloy mesh (3)；The phase-change material capsule (5) is by gold
Belong to film or graphene film package fusing point is made less than the phase-change material of steam superheating temperature, phase-change material capsule (5) passes through memory
B alloy wire (4) is connected with memory-alloy mesh (3), is moved with the deformation of memory-alloy mesh (3) and memory alloy wire (4).
2. a kind of guard method for the cold heat bidirectional protective device of jet chimney, feature as described in claim 1 exist
In：
When pipeline is under low temperature environment for a long time, insulation material layer (1) temperature continuously decreases, until triggering phase-change material layers
(2) setting temperature, phase-change material layers (2) solidify heat release and keep pipeline (6) and vapor (steam) temperature constant, prevent steam condensate corrosion
Pipeline, when environment temperature is gone up, phase-change material layers (2) are endothermic melting, restore defencive function；When steam partial heats up and triggers
When transition temperature, the memory-alloy mesh (3) being attached on jet chimney (6) outer wall and the memory alloy wire (4) being attached thereto
By contraction distortion, a large amount of phase-change material capsule (6) is pulled to be enriched in the region of steam heating, strengthens the heat transfer in heating region simultaneously
It absorbs heat to rapid, high volume, avoids superheating phenomenon, when temperature recurrence is normal, memory-alloy mesh (3) and memory alloy wire (4)
It restores to the original state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710121359.8A CN106885089B (en) | 2017-03-02 | 2017-03-02 | A kind of cold heat bidirectional protective device and method for jet chimney |
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| CN201710121359.8A CN106885089B (en) | 2017-03-02 | 2017-03-02 | A kind of cold heat bidirectional protective device and method for jet chimney |
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| CN106885089A CN106885089A (en) | 2017-06-23 |
| CN106885089B true CN106885089B (en) | 2018-10-26 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109140063A (en) * | 2018-10-30 | 2019-01-04 | 湖北兴欣科技股份有限公司 | Steel band reinforced polyethylene spiral ripple pipe with heat insulation function |
| CN110360452B (en) * | 2019-08-28 | 2020-11-24 | 徐州诚凯知识产权服务有限公司 | Natural gas station gas transmission method |
| CN112980272A (en) * | 2019-09-26 | 2021-06-18 | 恒力盛泰（厦门）石墨烯科技有限公司 | Preparation method of water-based intelligent heat-insulating and heat-dissipating coating |
| CN110778919B (en) * | 2019-10-28 | 2021-07-16 | 青海盐湖工业股份有限公司 | Protection method and system for salt lake brine conveying pipeline |
| CN112856061B (en) * | 2020-12-30 | 2022-01-18 | 浙江大学 | Phase-change material pouring heat-preservation sealing pipeline joint convenient to disassemble and assemble and method thereof |
| CN114199063B (en) * | 2021-12-14 | 2023-01-03 | 浙江大学 | Shell-and-tube heat exchanger based on memory metal and method for realizing contact melting |
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| US4574837A (en) * | 1983-09-29 | 1986-03-11 | Exxon Production Research Co. | Method and apparatus for splitting two-phase gas-liquid flows having a known flow profile |
| CA2181158C (en) * | 1994-01-14 | 2004-11-23 | Ian Cridland | Method and apparatus for insulating |
| CN2550614Y (en) * | 2002-07-12 | 2003-05-14 | 南京菲尔特过滤材料有限公司 | Directly buried type steam pipeline heat insulation pipe |
| CN1621483A (en) * | 2004-10-22 | 2005-06-01 | 清华大学 | Microcapsule type phase change cold accumulation agent for air conditioner cold accumulation and method for preparing same |
| JP2008051123A (en) * | 2006-08-22 | 2008-03-06 | Ebara Ballard Corp | Stretchable thermal and noise insulation sheet and its manufacturing method |
| RU2529612C1 (en) * | 2013-07-30 | 2014-09-27 | Евгений Петрович ПАВЛОВ | Lining hose to apply coating onto internal pipeline surface using steam as heat carrier |
| CN104315293A (en) * | 2014-09-09 | 2015-01-28 | 上海科华热力管道有限公司 | Heat storage insulation pipe |
| KR20160145977A (en) * | 2015-06-11 | 2016-12-21 | 신진유지건설 주식회사 | Tube for pipe repairing and strengthen insert shape-memory alloy |
| CN105823108B (en) * | 2016-06-17 | 2018-11-30 | 南京苏夏工程设计有限公司 | A kind of overlength distance conveying jet chimney |
| CN106244114B (en) * | 2016-07-08 | 2019-02-15 | 浙江大学 | A kind of phase-change accumulation energy temperature-controlling system and method based on mobile foam metal |
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