CN107201704A - A kind of method from steady regulation subgrade heat convection - Google Patents
A kind of method from steady regulation subgrade heat convection Download PDFInfo
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- CN107201704A CN107201704A CN201610152040.7A CN201610152040A CN107201704A CN 107201704 A CN107201704 A CN 107201704A CN 201610152040 A CN201610152040 A CN 201610152040A CN 107201704 A CN107201704 A CN 107201704A
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- bellows
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- gravitational equilibrium
- rotating shaft
- heat convection
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000033228 biological regulation Effects 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000005484 gravity Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/35—Foundations formed in frozen ground, e.g. in permafrost soil
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of method from steady regulation subgrade heat convection, this method refers to set rotating shaft at the middle part of air door first, limiter is then set in the rotating shaft, finally in the centrally disposed gravitational equilibrium bar of the rotating shaft；The gravitational equilibrium bar includes the housing of the closing built with bellows；Water is filled with the bellows, its one end is fixed on the housing by fixture, and its other end is connected by stroke multiplier with gravitational equilibrium block, and the gravitational equilibrium block extends axially through spring and is fixed on the housing.The present invention is simple in construction, and from into closed system, with the characteristics of stability is high, action is easy, sensitivity is high, 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 method from steady regulation subgrade heat convection.
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, meeting
Cause frozen soil and ground ice to degenerate and melt, so as to cause the generation of various engineering project disasters, stable are built to various Important Projects
Property 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, Chang little Xiao, money enter a kind of convection control air doors of ventilation duct Weight-balancing type of：China, 201020278498.5
[P], 2011-3-9）, because the devices such as hydraulic system are all placed on air door, the unfavorable air door of overweight weight it is long-term steady
It is fixed；Simultaneously as liquid is lighter, the moment of torsion of caused different directions is smaller, it is also difficult to effective, stable to open or close air door.
And for example：Yu Qihao（How Yu Qihao, Cheng Guodong, be that military is used for the cold controlling switch of duct insulation biography in roadbed：China,
[200520004195.3 P], 2006-9-13）, Yu Qihao（Yu Qihao, Cheng Guodong, the load-type hydraulic pressure automatic warm of horse Wei's roadbeds
Control ventilation unit：China, 03218744.0 [P], 2004-8-18）The hydraulic system of design is difficult in Qinghai-Tibet extreme environment
Effectively to work.Therefore, multi-angle research and development are needed badly and disclosure satisfy that the actual convection current regulation and control air door of engineering, Permafrost Area are met high
Fast highway construction needs.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high certainly steady tune of simple in construction, easy for installation, stability
The method for controlling roadbed heat convection.
To solve the above problems, a kind of method from steady regulation subgrade heat convection of the present invention, it is characterised in that：
This method refers to the middle part setting rotating shaft first in air door, limiter is then set in the rotating shaft, finally in the rotating shaft
Centrally disposed gravitational equilibrium bar；The gravitational equilibrium bar includes the housing of the closing built with bellows；In the bellows
Full water is filled, its one end is fixed on the housing by fixture, and its other end passes through stroke multiplier and gravitational equilibrium block
Connect, the gravitational equilibrium block extends axially through spring and is fixed on the housing.
The gravitational equilibrium bar includes the housing of the closing built with bellows；One end of the bellows passes through fixture
It is fixed on the housing, its other end extends axially through spring and is fixed on the housing；Filling full water in the bellows,
And gravity rod is placed, one end of the gravity rod and the top of the bellows are fixed, and its other end is moved freely.
The material of the housing and the bellows is metal or plastics.
The gravitational equilibrium block each means metal or stone material with the gravity rod.
The present invention has advantages below compared with prior art：
1st, it is simple in construction, easy for installation.
Compared with prior art, the only combination of gravitational equilibrium bar and air door is simple in construction by the present invention, makes convenient, peace
Fill and easy to maintenance.
2nd, stability is high.
First, the present invention, from into closed system, is not corroded and broken from steady power control unit by extraneous extreme environment
Bad influence, working life is significantly increased；Secondly, can to varying degrees by the use of metal gravity balance weight, amplification is opened
The effect of air door torsional moment is opened or closed, thus increases the action of airdoor control unit, the intensity of power, and increase action completion
Afterwards, the stability of air door status is maintained, to avoid the adverse effect that plateau strong wind is produced.
3rd, easy, sensitivity height is acted.
The present invention pushes directly on door opening or closing by the change of center of gravity inside gravitational equilibrium bar, and action is easy,
Thus the adverse effect that intermediate material conversion or power conversion are caused is avoided passing through.Meanwhile, hardware can be with sensitive sensing outside
The change of boundary's temperature, completes compulsory exercise under the conditions of design temperature in time.
4th, small is influenceed on ventilation duct air flow.
Due to the main axial direction distribution and cross section very little along ventilation duct of gravitational equilibrium bar, under ventilation duct opening,
The shared more other technologies of ventilation duct cross-sectional area ratio are smaller, and the influence of ventilation duct air flow is further effectively reduced.
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.
Fig. 3 is gravitational equilibrium bar structure I schematic diagram in the present invention.
Fig. 4 is gravitational equilibrium bar structure I I schematic diagrames in the present invention.
In figure：1-air door, 2-rotating shaft, 3-gravitational equilibrium bar 4-fixture, 5-bellows, 6-gravitational equilibrium block
7-spring, 8-stroke multiplier, 9-gravity rod, 10-limiter.
Embodiment
Embodiment 1 is as shown in Fig. 1 ~ 3, and a kind of method from steady regulation subgrade heat convection, this method refers to first in wind
The middle part of door 1 sets rotating shaft 2, limiter 10 is then set in rotating shaft 2, finally in the centrally disposed gravitational equilibrium bar of rotating shaft 2
3。
Gravitational equilibrium bar 3 includes the housing of the closing built with bellows 5；Filling full water in bellows 5, its one end passes through
Fixture 4 is fixed on housing, and its other end is connected by stroke multiplier 8 with gravitational equilibrium block 6, the edge of gravitational equilibrium block 6
It is fixed on axially through spring 7 on housing.
The material of housing and bellows 5 is metal or plastics.Gravitational equilibrium block 6 refers to metal or stone material.
Refer to can be with induced environment temperature change for air door 1 in the present invention, and reaches design temperature in variation of ambient temperature
Under condition, the device of air door 1 is automatically turned on or closed.
Operation principle of the present invention：
Air door 1 is turned on and off, mainly by being controlled from steady dynamic balance bar 3.Come from the power of steady dynamic balance bar 3
Balancing pole center of gravity is come from relative to the axle center both sides of air door 1, the different moments of torsion of diverse location formation.
The opening process of air door 1.Water is full of in gravitational equilibrium bar 3, in closed metal or plastic film capicitor 5 and close
Envelope.With the continuous decline of environment season or environment temperature, when temperature is less than 0 DEG C, what water body can occur in bellows 5 freezes.
In freezing process, due to the expansion for freezing to occur 9% volume of water body, by the restriction effect of the radial direction of bellows 5, water ---
The volume expanded in ice phase transition process, can only cause bellows 5 to axially expand, extend.Put down with gravity the one end of bellows 5
The weighing apparatus outer shell phase of bar 3 is fixed, and the other end can be moved freely, in expansion, elongation process, can be driven and be attached thereto gravitational equilibrium block
6 slide axially and offset.Thus, the overall center of gravity of gravitational equilibrium bar 3 is caused to carry out displacement and change vertically.Work as gravitational equilibrium
Bar 3 is suitable, when being placed on the axle center of air door 1, and in the process, the center of gravity of gravitational equilibrium bar 3 is just by the one of the relative axle center of air door 1
Side, is moved to the opposite side in relative axle center.Thus, opposite torque is generated with respect to axle center, air door 1 can be caused round about
Rotate, and be rotated up to the restriction site of 1 horizontal limiting stopper of air door 10, reach and air door 1 is opened under subzero temperature environmental condition
Purpose.
The closing process of air door 1.With the rise of environment temperature, and it is higher than under conditions of 0 DEG C, the ice body hair in bellows 5
Raw thawing, volume contraction, and under the elastic reaction of bellows 5, the shortening of length can radially occur for bellows 5.In ripple
In the presence of the pulling force of pipe 5 and the thrust of spring 7, gravitational equilibrium block 6 is moved and offset to other direction.And cause gravity to be put down
The center of gravity of weighing apparatus bar 3 returns to original opposite side by the side in the relative axle center of air door 1, movement.Under opposite moment loading, air door
1 rotates round about, and is rotated up to the vertical restriction site of limiter 10 of air door 1, reaches positive warm environmental condition ShiShimonoseki
Close the purpose of air door 1.
Stroke multiplier 8 is placed between above-mentioned bellows 5 and gravitational equilibrium block 6, one end of stroke multiplier 8 is consolidated
Due to closure and it is freely rotatable.The side near apart from axis of rotation connects with bellows 5, and remote side is put down with gravity
Weighing apparatus block 6 connects.So that the stroke of bellows 5 is amplified, and increases the displacement of gravitational equilibrium block 6, reaching more has
Imitate the purpose of control.
As shown in Figure 1, Figure 2, Figure 4 shows, a kind of method from steady regulation subgrade heat convection, this method refers to head to embodiment 2
Rotating shaft 2 first is set at the middle part of air door 1, then limiter 10 is set in rotating shaft 2, finally in the centrally disposed gravity of rotating shaft 2
Balancing pole 3.
Gravitational equilibrium bar 3 includes the housing of the closing built with bellows 5；One end of bellows 5 is fixed by fixture 4
In on housing, its other end extends axially through spring 7 and is fixed on housing；Filling full water in bellows 5, and place gravity rod 9,
Good seal.One end of the gravity rod 9 and the top of bellows 5 are fixed, and its other end is moved freely.
The material of housing and bellows 5 is metal or plastics.Gravity rod 9 refers to metal or stone material.
Refer to can be with induced environment temperature change for air door 1 in the present invention, and reaches design temperature in variation of ambient temperature
Under condition, the device of air door 1 is automatically turned on or closed.
Operation principle of the present invention：
On the basis of the operation principle of embodiment 1, with the freezing of the internal water of bellows 5, extend, or with bellows 5 inside
Thawing, the shortening of ice, internal gravity rod 9 move, thereby result in the change at the whole center of gravitational equilibrium bar 3, thus produce
It is raw, the torsion of air door 1 is turned on and off, air door 1 is turned on and off.
Claims (4)
1. a kind of method from steady regulation subgrade heat convection, it is characterised in that：This method refers to first in air door（1）Middle part
Rotating shaft is set（2）, then in the rotating shaft（2）Upper setting limiter（10）, finally in the rotating shaft（2）Centrally disposed gravity
Balancing pole（3）；The gravitational equilibrium bar（3）Including built with bellows（5）Closing housing；The bellows（5）Inside fill out
Full of water, its one end passes through fixture（4）It is fixed on the housing, its other end passes through stroke multiplier（8）It is flat with gravity
Weigh block（6）Connect, the gravitational equilibrium block（6）Extend axially through spring（7）It is fixed on the housing.
2. a kind of method from steady regulation subgrade heat convection as claimed in claim 1, it is characterised in that：The gravitational equilibrium
Bar（3）Including built with bellows（5）Closing housing；The bellows（5）One end pass through fixture（4）It is fixed on institute
State on housing, its other end extends axially through spring（7）It is fixed on the housing；The bellows（5）Interior filling full water, and
Place gravity rod（9）, the gravity rod（9）One end and the bellows（5）Top fix, its other end is moved freely.
3. a kind of method from steady regulation subgrade heat convection as claimed in claim 1, it is characterised in that：The housing and institute
State bellows（5）Material be metal or plastics.
4. a kind of method from steady regulation subgrade heat convection as claimed in claim 1, it is characterised in that：The gravitational equilibrium
Block（6）With the gravity rod（9）Each mean metal or stone material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152040.7A CN107201704B (en) | 2016-03-17 | 2016-03-17 | Self-stabilizing roadbed convective heat transfer regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610152040.7A CN107201704B (en) | 2016-03-17 | 2016-03-17 | Self-stabilizing roadbed convective heat transfer regulating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107201704A true CN107201704A (en) | 2017-09-26 |
| CN107201704B CN107201704B (en) | 2023-05-12 |
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ID=59903767
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610152040.7A Active CN107201704B (en) | 2016-03-17 | 2016-03-17 | Self-stabilizing roadbed convective heat transfer regulating method |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018329A (en) * | 1998-06-30 | 2000-01-18 | Unisia Jecs Corp | Flywheel |
| CN2526647Y (en) * | 2000-11-14 | 2002-12-18 | 顾锡璋 | Steam-blocking water-draining valve |
| CN201756668U (en) * | 2010-07-29 | 2011-03-09 | 中国科学院寒区旱区环境与工程研究所 | Gravitational equilibrium type convection control air door of vent pipe |
| CN104133487A (en) * | 2014-06-28 | 2014-11-05 | 苏州征之魂专利技术服务有限公司 | Gas-expansion-type temperature-light-sensitive thermotropic gravity center automatic adjustment device |
| CN104717324A (en) * | 2013-12-13 | 2015-06-17 | 区超洪 | Mobile phone with novel incoming call function |
-
2016
- 2016-03-17 CN CN201610152040.7A patent/CN107201704B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018329A (en) * | 1998-06-30 | 2000-01-18 | Unisia Jecs Corp | Flywheel |
| CN2526647Y (en) * | 2000-11-14 | 2002-12-18 | 顾锡璋 | Steam-blocking water-draining valve |
| CN201756668U (en) * | 2010-07-29 | 2011-03-09 | 中国科学院寒区旱区环境与工程研究所 | Gravitational equilibrium type convection control air door of vent pipe |
| CN104717324A (en) * | 2013-12-13 | 2015-06-17 | 区超洪 | Mobile phone with novel incoming call function |
| CN104133487A (en) * | 2014-06-28 | 2014-11-05 | 苏州征之魂专利技术服务有限公司 | Gas-expansion-type temperature-light-sensitive thermotropic gravity center automatic adjustment device |
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| Publication number | Publication date |
|---|---|
| CN107201704B (en) | 2023-05-12 |
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