CN107201712A - A kind of method of spring balancing regulation subgrade heat convection - Google Patents
A kind of method of spring balancing regulation subgrade heat convection Download PDFInfo
- Publication number
- CN107201712A CN107201712A CN201610159689.1A CN201610159689A CN107201712A CN 107201712 A CN107201712 A CN 107201712A CN 201610159689 A CN201610159689 A CN 201610159689A CN 107201712 A CN107201712 A CN 107201712A
- Authority
- CN
- China
- Prior art keywords
- spring
- axis rod
- heat convection
- balancing
- axis
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of method of spring balancing regulation subgrade heat convection, this method refers to axis rod is fixed on ventilation tube wall first, and shaft sleeve is socketed on the axis rod；Then air door is fixed on the shaft sleeve；Finally limiter is set on the axis rod, and be symmetrical arranged memory alloy spring and balancing spring using the axis rod as symmetry axis at the center of the axis rod.The inventive method is simple, easy for installation, and stability is high, wide using scope, and Qinghai-Tibet extreme environment is adapted to completely, and meets engineering construction particular/special requirement, at utmost improves the cooling efficiency of ventilated embankment.
Description
Technical field
The present invention relates to frozen soil engineering technical field, more particularly to a kind of side of spring balancing regulation subgrade heat convection
Method.
Background technology
In Permafrost Areas such as China Qinghai-Tibet Platean, northeast, by long-term evolution, development and change, form thickness and reach
Several meters, even more than ten meters, the Thick Underground Ice of each tool form.With the change of climatic environment, the influence of Human dried bloodstains, lead
Frozen soil and ground ice is caused to degenerate and melt, so as to cause the generation of various engineering project disasters, to various Important Project structural stabilities
Produce material impact.
By the use of protection of permafrost engineering measure, active cooling frozen soil basis is to ensure frozen soil engineering long-term safety fortune
Battalion, stable critical path.And in these measures, the Convective Heat Transfer of Effective Regulation frozen soil engineering is protection of permafrost base
One type of the important engineering measure of plinth.Such measure by effectively facilitate under winter or cool night temperatures environmental condition basis with
The heat transfer process of external environment, effectively suppresses heat transfer process basic under warm season or daytime high ambient conditions, thus reaches cold
Continuous storage that can be inside roadbed, the continuous reduction of frozen soil ground temperature, stability of foundation constantly enhanced purpose.
In face of the appearance of national " 13 " strategical planning, Qinghai-Tibet highway will face build, still, highway
Compared with common road, common road Frozen soil problems compared with railway are all more prominent.There are some researches show（The such as Yu Qihao
China's Permafrost Area highway builds key issue research Chinese sciences（Technological sciences）, 2014,44（4）: 425 ~
432）, due to the strong endothermic of dark-coloured pavement, bituminous paving water proof and the influence for preventing moisture evaporation from radiating so that the same terms
The heat absorption intensity of roadbed of getting down the highway is railway more than 3 times, and the main path of roadbed heat absorption, is concentrated mainly on the center of embankment
Position, and be difficult to radiate to frozen soil around.And highway exacerbates the appearance of this kind of phenomenon compared with common road, more.When
During about 1 times of highway subgrade width increase, about 0.6 times of the heat absorption intensity increase of embankment bottom surface, roadbed heat absorption is further gathered in
The centre of roadbed, thus produces more obvious " heat build-up effect ", and cause frozen soil more quickly to be degenerated.In face of higher
Technical standard, broader highway pavement, the heat effect between highway and frozen soil is more notable, is built in Permafrost Area
Highway will be in face of more prominent Frozen soil problems and build technical barrier.Due to the root in terms of heat transfer path, intensity
This change, is difficult to directly apply in the expressway construction of Qinghai-Tibet by the successful experience of the acquisitions such as Qinghai-Tibet Railway, advanced technology.
Although existing analogous technical is regulated and controled to the heat convection of ventilation duct, Qinghai-Tibet Platean is high and cold extremely certainly
Right environment, special engineering condition, the stability, the sensitiveness of air door, air door that air door is all regulated and controled to ventilation duct is installed and O＆M mistake
Convenience of journey etc. is proposed higher requirement, and some existing technologies are difficult to fully meet actual demands of engineering.Such as：Yu Qihao
（Yu Qihao, Cheng Guodong, the automatic temperature control ventilator of the towering roadbeds of horse：China, 03218742.4 [P], 2004-8-18）Skill
Art, it is outer, it is necessary to sense sunlight irradiation that whole temperature induction unit is arranged on ventilation duct.Simultaneously control unit need by rod member with
Air door is connected in ventilation duct.Sensing unit, motor unit are not only subject to destruction, and connecting rod under extreme environment
Part easily fails, and causes the failure of whole device.Meanwhile, the installation of device is, it is necessary to individually drilling, the perforating, mistake on ventilation duct
Journey is cumbersome, inefficiency.The presence of these problems all causes this kind of technology use cost, O＆M difficulty to be significantly increased, to this
The popularization of the technology of kind causes extreme influence.And for example：Yu Qihao（Yu Qihao, Cheng Guodong, how be military be used for roadbed in ventilation duct every
Heat passes cold controlling switch：China, 200520004195.3 [P], 2006-9-13）, Yu Qihao（Yu Qihao, Cheng Guodong, horse Wei.Lu
The load-type hydraulic automatic temperature control ventilator of base：China, 03218744.0 [P], 2004-8-18）The hydraulic system of design,
Qinghai-Tibet extreme environment is difficult to effective work.Therefore, multi-angle research and development are needed badly and disclosure satisfy that the actual convection current regulation and control of engineering
Air door, meets Permafrost Area expressway construction needs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high spring of simple in construction, easy for installation, stability and put down
The method of weighing apparatus formula regulation subgrade heat convection.
To solve the above problems, a kind of method of spring balancing regulation subgrade heat convection of the present invention, it is special
Levy and be：This method refers to axis rod is fixed on ventilation tube wall first, and shaft sleeve is socketed in into the axle center
On bar；Then air door is fixed on the shaft sleeve；Finally limiter is set on the axis rod, and in the axis rod
Center be symmetrical arranged memory alloy spring and balancing spring using the axis rod as symmetry axis.
The memory alloy spring refers in Ti Ni binary systems, Ti Ni-X ternary systems, Cu bases, Fe base marmems
One kind, its regulate and control design temperature be -10 DEG C ~ 10 DEG C.
The balancing spring refers to the combination of one or both of common metal, plastics, rubber spring and the above.
The present invention has advantages below compared with prior art：
1st, it is simple in construction, easy for installation.
The present invention compared with prior art, the only combination of memory alloy spring, balancing spring and air door；And have with air door
Machine is combined into one.Overall structure is simple, makes facility, installs and easy to maintenance.
2nd, stability is significantly improved.
First, the present invention is all positioned over the inside of ventilation duct, is prevented effectively from extraneous extreme environment and corrodes and destroy
Influence, working life is significantly increased；Secondly, rotary power of the invention effect is direct, without any drive link, having stable behavior
Property significantly strengthens.
3rd, easy, sensitivity height is acted.
Memory alloy spring of the present invention is directly exposed among surrounding air, direct induced environment temperature change, and action rings
Also thus significantly shorten between seasonable.Therefore, whole device can with it is sensitive, accurate, be turned on and off air door in time.
4th, engineering cooling efficiency is effectively improved.
Due to regulation and control air door sensitivity, the raising of the degree of accuracy, not only ventilation pipe foundation under the conditions of Effective Regulation Various Seasonal
Convective Heat Transfer, and under Condition of Environment Changes round the clock, the Convective Heat Transfer to ventilation pipe foundation can also be carried out
Effective Regulation.Thus, at utmost the overall drop of ventilated embankment is further improved by inside the cold energy accumulation of nature to roadbed
Warm efficiency.
5th, on the further reduction of ventilation duct air flow process influence.
Because metal rod prevents take up the wind area excessively of ventilation process substantially, thus the influence of control device is dropped to most
It is low.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is side view of the invention.
Fig. 2 is front view of the invention.
In figure：1-air door, 2-axis rod, 3-shaft sleeve, 4-limiter, 5-memory alloy spring 6-balance
Spring.
Embodiment
As shown in Figure 1 and Figure 2, a kind of method of spring balancing regulation subgrade heat convection, this method refers to axle first
Core bar 2 is fixed on ventilation tube wall, and shaft sleeve 3 is socketed on axis rod 2；Then air door 1 is fixed on rotating shaft
On sleeve pipe 3；Limiter 4 is finally set on axis rod 2, and is that symmetrical axial symmetry is set with axis rod 2 at the center of the axis rod 2
Put memory alloy spring 5 and balancing spring 6.
Wherein：
Memory alloy spring 5 refers to one kind in Ti Ni binary systems, Ti Ni-X ternary systems, Cu bases, Fe base marmems,
It is -10 DEG C ~ 10 DEG C that it, which regulates and controls design temperature,.
Balancing spring 6 refers to the combination of one or both of common metal, plastics, rubber spring and the above.
Operation principle of the present invention is：
Memory alloy spring 5 is higher than austenite（Austenite）Under phase transition temperature Af environment, i.e., higher than memory alloy spring
Under the conditions of 5 design temperatures, memory alloy spring 5 has of a relatively high coefficient of elasticity.Less than martensite（Martenite）Phase
Under temperature Mf environment, i.e., memory alloy spring 5 has very low coefficient of elasticity relatively under relatively lower temp environmental condition.
And for common spring, its elastic force is not varied with temperature substantially, and with the reduction of temperature, instead elasticity increase.Therefore, air door 1
Be turned on and off, mainly by under varying environment temperature conditionss, the elastic force and torsion of memory alloy spring 5 and balancing spring 6
Relative size be controlled.
The opening process of air door 1.Under the conditions of environment temperature is less than design temperature, because memory alloy spring 5 is in horse
Family name's body state, the coefficient of elasticity of memory alloy spring 5 is very low, now, and the torsion of common balancing spring 6 is more than memory alloy spring
5 elastic force, air door 1 is under the torsional force urges of balancing spring 6, door opening, turns to the restriction site of horizontal limiting stopper 4.
The closing process of air door 1.With above-mentioned condition on the contrary, in environment temperature higher than under imposing a condition, at memory alloy spring 5
In austenitic state, the spring return of memory alloy spring 5, and it is more than the torsion of balancing spring 6, in the bullet of memory alloy spring 5
Under the promotion of power, air door 1 is rotated round about, and is rotated up to the vertical restriction site of limiter 4 of air door 1, is completed just
The closing of warm environmental condition lower wind door 1.
Claims (3)
1. a kind of method of spring balancing regulation subgrade heat convection, it is characterised in that：This method refers to axis rod first
（2）It is fixed on ventilation tube wall, and by shaft sleeve（3）It is socketed in the axis rod（2）On；Then by air door（1）Gu
Due to the shaft sleeve（3）On；Finally in the axis rod（2）Upper setting limiter（4）, and in the axis rod（2）In
The heart is with the axis rod（2）Memory alloy spring is symmetrical arranged for symmetry axis（5）With balancing spring（6）.
2. a kind of method of spring balancing regulation subgrade heat convection as claimed in claim 1, it is characterised in that：The note
Recall alloy spring（5）Refer to one kind in Ti Ni binary systems, Ti Ni-X ternary systems, Cu bases, Fe base marmems, it is adjusted
It is -10 DEG C ~ 10 DEG C to control design temperature.
3. a kind of method of spring balancing regulation subgrade heat convection as claimed in claim 1, it is characterised in that：It is described flat
Weigh spring（6）Refer to the combination of one or both of common metal, plastics, rubber spring and the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159689.1A CN107201712B (en) | 2016-03-17 | 2016-03-17 | Method for regulating and controlling roadbed convective heat transfer by spring balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159689.1A CN107201712B (en) | 2016-03-17 | 2016-03-17 | Method for regulating and controlling roadbed convective heat transfer by spring balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107201712A true CN107201712A (en) | 2017-09-26 |
| CN107201712B CN107201712B (en) | 2023-05-12 |
Family
ID=59904286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610159689.1A Active CN107201712B (en) | 2016-03-17 | 2016-03-17 | Method for regulating and controlling roadbed convective heat transfer by spring balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107201712B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478963A (en) * | 2003-04-02 | 2004-03-03 | 中国科学院寒区旱区环境与工程研究所 | Automatic temp-control and ventilation device of subgrade |
| CN201071733Y (en) * | 2007-07-27 | 2008-06-11 | 淄博矿业集团有限责任公司埠村煤矿 | Bidirectional opening wind pressure balance rotating air gate |
| CN102589102A (en) * | 2011-01-06 | 2012-07-18 | 金真洙 | Air door device for overpressure air exhaust of pressurized smoke control system |
| CN102923307A (en) * | 2012-11-16 | 2013-02-13 | 中国航空工业集团公司西安飞机设计研究所 | Two-way memory alloy flow control device |
| RU158032U1 (en) * | 2015-06-16 | 2015-12-20 | Открытое акционерное общество "РАО Энергетические системы Востока" | EARTH CANVAS |
-
2016
- 2016-03-17 CN CN201610159689.1A patent/CN107201712B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478963A (en) * | 2003-04-02 | 2004-03-03 | 中国科学院寒区旱区环境与工程研究所 | Automatic temp-control and ventilation device of subgrade |
| CN201071733Y (en) * | 2007-07-27 | 2008-06-11 | 淄博矿业集团有限责任公司埠村煤矿 | Bidirectional opening wind pressure balance rotating air gate |
| CN102589102A (en) * | 2011-01-06 | 2012-07-18 | 金真洙 | Air door device for overpressure air exhaust of pressurized smoke control system |
| CN102923307A (en) * | 2012-11-16 | 2013-02-13 | 中国航空工业集团公司西安飞机设计研究所 | Two-way memory alloy flow control device |
| RU158032U1 (en) * | 2015-06-16 | 2015-12-20 | Открытое акционерное общество "РАО Энергетические системы Востока" | EARTH CANVAS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107201712B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cheng et al. | Innovative designs of permafrost roadbed for the Qinghai-Tibet Railway | |
| Ma et al. | Remedying embankment thaw settlement in a warm permafrost region with thermosyphons and crushed rock revetment | |
| Bates | The windbreak as a farm asset | |
| JP6341752B2 (en) | Anti-frost / freezing device | |
| CN101818471A (en) | Application of transparent wall vent pipe-massive stone layer cooling and insulating composite road bed in wide road | |
| Oke et al. | Willy-willies in the Australian landscape: The role of key meteorological variables and surface conditions in defining frequency and spatial characteristics | |
| Johanneck et al. | Comprehensive evaluation of effect of climate in mechanistic–empirical pavement design GuidePredictions | |
| Saboundjian et al. | Air convection embankment for roadways: Field experimental study in Alaska | |
| Fujun et al. | Monitoring study on the boundary thermal conditions of duct-ventilated embankment in permafrost regions | |
| CN107201712A (en) | A kind of method of spring balancing regulation subgrade heat convection | |
| M-Lepage et al. | Thermal effectiveness of the mitigation techniques tested at Beaver Creek experimental road site based on a heat balance analysis: Yukon, Canada | |
| CN107201710A (en) | A kind of method of spring warpage formula regulation subgrade heat convection | |
| Lai et al. | Study of methods to control frost action in cold regions tunnels | |
| CN205576666U (en) | Spring balance formula regulation and control road bed heat convection's structure | |
| CN205474660U (en) | Spring warpage formula regulation and control road bed heat convection's structure | |
| JP2004229509A (en) | Method for controlling temperature of vegetation soil foundation | |
| CN204325841U (en) | A kind of for cooling the frozen earth roadbed cold wind harvester of speedway large scale | |
| CN106087636A (en) | Permafrost Area freeze thawing resistance heat accumulation horizontal proliferation ventilation curb structure | |
| Chen et al. | Cooling effect of crushed rock-based embankment along the Chaidaer-Muli Railway | |
| CN205576664U (en) | Structure from steady regulation and control road bed heat convection | |
| CN107201704B (en) | Self-stabilizing roadbed convective heat transfer regulating method | |
| JP7187290B2 (en) | Vegetation ground temperature control method | |
| CN107513915A (en) | A kind of method of intelligent and high-efficiency regulation subgrade heat convection | |
| CN104480823A (en) | Cold air collection device and cold air collection method for cooling large-scale frozen earth roadbed of highway | |
| Gu et al. | Qinghai-Tibet expressway experimental research |
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 |