CN104213584A - Air door being automatically opened and closed - Google Patents
Air door being automatically opened and closed Download PDFInfo
- Publication number
- CN104213584A CN104213584A CN201310220012.0A CN201310220012A CN104213584A CN 104213584 A CN104213584 A CN 104213584A CN 201310220012 A CN201310220012 A CN 201310220012A CN 104213584 A CN104213584 A CN 104213584A
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- Prior art keywords
- door
- piston
- air
- air door
- pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The invention relates to an air door being automatically opened and closed. The air door being automatically opened and closed is characterized in that a connecting tube is embedded in a vent pipe, a screw is fastened to the vent pipe through a screw hole, the pipe mouth of the connecting pipe inclines outwards, the inclination angle is smaller than 95 degrees, the bottom end of the pipe mouth in the connecting pipe is provided with a door sheet which is connected through a hinge, the door sheet is connected with a piston rod in a piston cylinder, and the piston rod, a piston and a solution are arranged in the piston cylinder. The air door being automatically opened and closed is simple in structure and convenient and fast to install. The air door is automatically opened or closed through the change of pressure of gas released according to the solubility of the solution in the piston cylinder, and therefore the purpose of keeping a foundation stable is achieved.
Description
Technical field
[0001] the present invention relates to a kind of air door structure automatically opened by air pressure change, close.Be suitable for maintaining the stable of frozen soil basis.
Background technology
The ground such as Qinghai-Tibet Platean, the large Xiaoxinanlin Mountains, northeast, the Qilian mountains are dispersed with ever-frozen ground, account for 22.3% of territory land surface.Under climate warming trend and the increasing background of engineering activity, the stability of building is subject to frozen soil and melts the danger brought.Be subject to dangerous Important Project to comprise: Qinghai-Tibet Highway, Qinghai-Tibet Railway, China-Russia Crude Oil Pipeline etc.The large Xiaoxinanlin Mountains, northeast are the most violent regions of Permafrost Area mankind's activity, and a lot of house becomes high tower because frozen soil basis is melted.
Carrying out ventilation process to basis is one of important measures maintaining frozen soil base fixed at present, and climatic characteristic is in recent years that summer is hot, winter is cold, pours into hot blast and bring serious threat to the stable of basis in summer ventilation pipe.Although the existing patented technology about controlling pipeline air intake, fails to apply in practice because its effect is unsatisfactory at present.Therefore, for air chimney research and development a kind of summer to close, winter opens and air door easy to install and use is significant to maintenance base fixed.
Summary of the invention
In view of above-mentioned, the object of the present invention is to provide a kind of air door of automatic open and close, utilize the increase of solubilize degree in piston cylinder or reduce that release gas is many or few realizes opening and closing automatically of tube connector air door.
The object of the present invention is achieved like this:
An air door for automatic open and close, is installed on air chimney pipe end, and air door is by tube connector, the mouth of pipe, hinge, door-plate, piston rod, and piston, solution, piston cylinder, screw hole forms.Tube connector is nested in air chimney, screw by screw hole and air chimney fastening, the mouth of pipe of tube connector is outward-dipping, angle of inclination
be less than 95 °, the door-plate of gemel connection is equipped with in the bottom of pipe inner spout, and door-plate is connected with the piston rod in piston cylinder, has piston rod, piston and solution in piston cylinder.
Above-mentioned solution is that the soluble gas in water or other solvent is ammonia or is carbon dioxide.
The beneficial effect of advantage of the present invention and generation is:
1, easy construction, quick, little to environmental perturbation; Repair and replacement are convenient.
2, new construction and existing engineering maintenance can use;
3, can at utmost cold energy in winter be collected and be stored in basis, to maintenance the stable of frozen soil basis, there is important function.
Inclination angle is less than 95 °. and the design formulas promoting the thrust F that door-plate moves upward is:
F=G/n （Ⅰ）
In formula (I): n is the position of door-plate center of gravity on oval door-plate long axis direction; G is gravity suffered by door-plate.
In piston cylinder, gas expansion needs the thrust F produced
1design formulas is as follows:
F
1=P*S+F (Ⅱ)
Formula (II) P is on-the-spot atmospheric pressure, and S is that piston cross-section amasss.
Plunger rod strokes S
1design formulas is:
S
1 ≥
(Ⅲ)
In formula (III): d is door-plate long axis length,
for the angle at inclination angle.
Need after lysate variations in temperature in piston cylinder discharge gas volume calculate formula be:
V=S*S
1 (Ⅳ)
Lysate release volume design formulas:
(Ⅴ)
In above formula (V):
for being F at pressure
1changes in solubility amount under condition after the rising of lysate temperature under former and later two states, V
0for the volume of solvent.
pressure F
1gas density under condition, its design formulas is:
(Ⅵ)
In formula (VI): T
0, P
0,
for the temperature under standard state, pressure and density; T
1, P
1for the temperature after change and pressure.
The minimum volume that comprehensive above-mentioned formulae discovery goes out gas-solvent is:
(Ⅶ)
V
0under considering Site characteristic, panel material, rotational angle and solute characteristic condition, meet the minimum volume that door-plate can cut out completely.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the 3-D view of Fig. 1.
Fig. 3 air door close before air chimney and boundary temperature correlation curve figure, in figure: the little temperature curve that fluctuates is temperature in (cold season) air chimney before air door closedown; The large curve that fluctuates is boundary temperature curve.
Fig. 4 air door closes rear venting pipe and boundary temperature correlation curve figure, in figure: the little temperature curve that fluctuates is that temperature in rear (warm season) air chimney closed by air door; The large curve that fluctuates is boundary temperature curve.
Detailed description of the invention
For understanding the present invention better, be illustrated according to Qinghai-Tibet air pressure and Temperature Features:
As shown in Figure 1-2, an air door for automatic open and close, is installed on air chimney pipe end, and air door contains tube connector 1, the mouth of pipe 2, hinge 3, door-plate 4, piston rod 5, piston 6, solution 7, piston cylinder 8, screw hole 9, composition, tube connector 1 internal diameter 25cm, the long 30cm in the end, pushes up long 44.5cm, and material is polyethylene thick-walled pipe.Angle of slope, the mouth of pipe 2 cross section 10 is 60 °.The white acrylic board of anti-solar radiation selected by door-plate 4.Density 1.04g/cm
3, average thickness 0.6cm.Quality 353g, center of gravity is in oval geometric center.Piston 6 stroke 25cm.In piston cylinder 8, solution is ammoniacal liquor.In the nested air chimney of tube connector 2, screw is fastening by screw hole 9 and air chimney.The oval door-plate 4 that hinge 3 connects is equipped with in bottom in tube connector 2 pipe, and door-plate 4 is connected with the piston rod 5 in piston cylinder 8, has piston rod 5 in piston cylinder 9, piston 6 and solution 5.Piston cylinder 8 is embedded in soil layer, thickness of earth covering 2cm, surface coverage black heat absorption thin plate.
Warm season, temperature raises, when temperature rises to gradually in the process of 8 DEG C from 0 DEG C, in piston cylinder 8, ammonia solvent degree reduces, the ammonia that discharges promote piston 6 move upward, thereupon piston rod 5 promote door-plate 4 and move upward, until door-plate 4 closes with the mouth of pipe 2, isolated extraneous hot air is to the interference on frozen soil basis; Cold season, temperature reduce, in piston cylinder 8 ammonia solvent degree reduce, air pressure reduce, piston 6 moves downward, door-plate 4 under Gravitative Loads, piston rod 5 moves downward, until and earth surface.Reached the open and close of tube connector 1 air door by above two programs, achieve roadbed cold energy and effectively store, reach with this object maintaining base fixed.
For verifying the cooling-down effect of project organization, carry out field trial.Cooling-down effect is analyzed by the variation tendency in analysis air chimney with boundary temperature before and after air door is closed and accumulated temperature value.
Fig. 3 and Fig. 4 is that air chimney air door is closed in cross ventilation pipe and the temperature variation of external boundary.Data are measurement per hour.The temperature fluctuation of air chimney external boundary is very large, and the rate of temperature rise in winter is 0.352, and the rate of temperature rise in spring is 0.583; In air chimney, the rate of temperature rise in winter is 0.235, and this differs 0.117 with boundary temperature rate of change, and the rate of temperature rise after air chimney closedown is 0.356, differs 0.227 with external boundary temperature rate, and air chimney closes the rate of temperature rise difference about 10 times of front and back.Experimental period, the accumulated temperature of inner boundary temperature was-24601.9 DEG C, accumulated temperature in air chimney is-29072.3 DEG C, and both differ 4503.285 DEG C, and closing air door when this shows warm season can reduce the heat entering roadbed greatly, maintain the stable of frozen soil basis, Be very effective.
Claims (2)
1. the air door automatically opened and closed, be installed on air chimney pipe end, air door is by tube connector (1), the mouth of pipe (2), hinge (3), door-plate (4), piston rod (5), piston (6), solution (7), piston cylinder (8), screw hole (9), composition, it is characterized in that in tube connector (2) nested air chimney, screw is fastening by screw hole (9) and air chimney, outward-dipping at the mouth of pipe (2) of tube connector (1), angle of inclination
(10) be less than 95 °, the door-plate (4) that hinge (3) connects is equipped with in the bottom of pipe inner spout (2), and door-plate (4) is connected with the piston rod (5) in piston cylinder (8), has piston rod (5) in piston cylinder (8), piston (6) and solution (7).
2. the air door of a kind of automatic open and close according to claim 1, is characterized in that: above-mentioned solution (7) is for the soluble ammonia in water or other solvent or be carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220012.0A CN104213584A (en) | 2013-06-05 | 2013-06-05 | Air door being automatically opened and closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310220012.0A CN104213584A (en) | 2013-06-05 | 2013-06-05 | Air door being automatically opened and closed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104213584A true CN104213584A (en) | 2014-12-17 |
Family
ID=52095467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310220012.0A Pending CN104213584A (en) | 2013-06-05 | 2013-06-05 | Air door being automatically opened and closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104213584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110367A (en) * | 2022-04-07 | 2022-09-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Switch device of roadbed ventilation pipe and roadbed comprising switch device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181448A (en) * | 1978-09-25 | 1980-01-01 | Atlantic Richfield Company | Combination roadway and pipeline way in permafrost regions |
| CN2122939U (en) * | 1992-03-19 | 1992-11-25 | 王送寒 | Power source unit |
| CN1478964A (en) * | 2003-04-02 | 2004-03-03 | 中国科学院寒区旱区环境与工程研究所 | Hydraulic automatic temperature control and ventilation device of subgrade |
| CN101289830A (en) * | 2008-06-12 | 2008-10-22 | 中国科学院寒区旱区环境与工程研究所 | Duct-ventilated embankment with chimney |
| CN203363376U (en) * | 2013-06-05 | 2013-12-25 | 中国科学院寒区旱区环境与工程研究所 | Ventilation door capable of being automatically opened and closed |
-
2013
- 2013-06-05 CN CN201310220012.0A patent/CN104213584A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181448A (en) * | 1978-09-25 | 1980-01-01 | Atlantic Richfield Company | Combination roadway and pipeline way in permafrost regions |
| CN2122939U (en) * | 1992-03-19 | 1992-11-25 | 王送寒 | Power source unit |
| CN1478964A (en) * | 2003-04-02 | 2004-03-03 | 中国科学院寒区旱区环境与工程研究所 | Hydraulic automatic temperature control and ventilation device of subgrade |
| CN101289830A (en) * | 2008-06-12 | 2008-10-22 | 中国科学院寒区旱区环境与工程研究所 | Duct-ventilated embankment with chimney |
| CN203363376U (en) * | 2013-06-05 | 2013-12-25 | 中国科学院寒区旱区环境与工程研究所 | Ventilation door capable of being automatically opened and closed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110367A (en) * | 2022-04-07 | 2022-09-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Switch device of roadbed ventilation pipe and roadbed comprising switch device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |
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| WD01 | Invention patent application deemed withdrawn after publication |