CN204325840U - A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system - Google Patents
A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system Download PDFInfo
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- CN204325840U CN204325840U CN201420779398.9U CN201420779398U CN204325840U CN 204325840 U CN204325840 U CN 204325840U CN 201420779398 U CN201420779398 U CN 201420779398U CN 204325840 U CN204325840 U CN 204325840U
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Abstract
A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system that the utility model relates to.Existing roadbed air chimney system cooling-down effect is limited, and hot air can be introduced summer, improves roadbed temperature, is unfavorable for frozen earth stable.The transverse and longitudinal that includes the utility model intersects and the multiple tracks vent header interconnected and ventilation longitudinal tubule (L tubule), and the ventilation longitudinal tubule (L tubule) being positioned at both side ends is connected to the air intake and air outlet that stretch out roadbed transverse direction; Air intake arranges a place, is provided with air pumping equipment and temperature detect switch (TDS); Air outlet arranges many places longitudinally.The built in air pumping equipment of cold air by air intake is introduced by the utility model, discharged by air outlet after the circulation of ventilation longitudinal tubule (L tubule), vent header, air in piping inner cyclic process with roadbed generation interchange of heat, and then reach the effect reducing ground temperature, can only open lower than during roadbed temperature at outside air temperature, avoid summer fever air to enter, air quantity is controlled, and cooling effect is obvious.
Description
Technical field
the utility model belongs to transport development technical field, is specifically related to a kind of large scale frozen earth roadbed pressure diffuse type cooling duct system.
Background technology
China is third place in the world large frozen soil country, and the Area distribution exceeding area 22% permafrost of different-thickness, especially in Qinghai, Tibet, Inner Mongol, the ground such as northeast, frozen soil distribution is more concentrated.In recent years, along with the development of highway construction, these local highway mileages constantly increase, because the absorb heat this area's roadbed, the pavement disease problem that cause of dark-coloured pavement is outstanding day by day.Especially after listing national highway Planning Net at a high speed along with Qinghai-Tibet, how in highway construction district, protect the ever-frozen ground that underlies not melt, maintain subgrade stability, become the difficult problem that frozen soil scientific research personnel urgently solves.
Do not degenerate to protect Upper Limit of Permafrost, and then reach maintenance subgrade stability object, Domestic Scientific Research worker proposes series of measures and scheme, and carried out some row experimental projects at Qinghai-Tibet Highway and national highway G214 line: such as: Sun Hong, Ge Xiurun etc. are respectively to the Mechanism of thermal regulating of ventilation pipe foundation, ventilation pipe foundation is proposed, cool ambient air is introduced, but its problem is that air chimney is towards necessarily, can not change by box haul, this to a certain degree have impact on its cooling-down effect, and hot air can be introduced summer by ventilation pipe foundation, improve roadbed temperature, be unfavorable for frozen earth stable.Liu Zhiqiang, Lai Yuanming etc., by installing insulated door on ventilation pipe foundation, to a certain degree alleviating summer heat and entering the situation of roadbed, but thoroughly can not solve pipeline and wind direction can not on all four problem.Liu Zhiqiang, Ma Wei, Zhou Guoqing, Niu Fujun etc. by adopt chiller plant, simulate the effect that buried pipeline is lowered the temperature to roadbed in roadbed, but do not propose concrete pipe arrangement scheme, and in roadbed actual embedding manner.
Along with Economy of Western Areas development, Qinghai-Tibet high speed project is put into national planning, compared to original Qing Zanglu, Qinghai-Tibet high speed roadbed width of roadway increase nearly one times, wider road surface means higher caloric receptivity, wider roadbed then means that the measure that traditional air chimney, sheet block stone etc. only rely on natural wind to carry out ventilation parameters cooling can not blow through view picture roadbed completely, is therefore just badly in need of a kind of enforceable venting practice, to ensure the express highway roadbed cooling-down effect of wide cut.
Summary of the invention
The purpose of this utility model is to provide a kind of large scale frozen earth roadbed pressure diffuse type cooling duct system, introduces extraneous cold to greatest extent, avoids extraneous hot air to enter roadbed, and cooling-down effect is rapider, and cooling extent is controlled.
The technical scheme that the utility model adopts is:
A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Include transverse and longitudinal to intersect and the multiple tracks vent header interconnected and ventilation longitudinal tubule (L tubule), the ventilation longitudinal tubule (L tubule) being positioned at both side ends is connected to the air intake and air outlet that stretch out roadbed transverse direction.
Ventilation longitudinal tubule (L tubule) arranges twice along the longitudinal both sides of roadbed, between horizontally set be less than 8 road vent headers.
Vent header and ventilation longitudinal tubule (L tubule) are all made up of more piece short tube, are pvc pipe, concrete pipe or steel pipe;
Vent header and ventilation longitudinal tubule (L tubule) are connected by pipe connecting tee in length and breadth;
Ventilation longitudinal tubule (L tubule) is connected with into and out of air port connecting tee by longitudinal tubule (L tubule) with air outlet with air intake;
Vent header is connected by transverse tube connecting pipe hoop.
The ventilation longitudinal tubule (L tubule) termination of end is provided with the external plug of longitudinal tubule (L tubule).
Air intake arranges a place, air intake is provided with air pumping equipment and temperature detect switch (TDS);
Air outlet arranges many places longitudinally.
The internal diameter of vent header is not less than 10cm, and pipe thickness is not less than 1.2mm;
Ventilation longitudinal tubule (L tubule) internal diameter is not less than 20cm, and pipe thickness is not less than 6.0mm.
It is 0.8m that air intake and air outlet stretch out roadbed length.
The utility model has the following advantages:
The air chimney system that the utility model relates to is closed system, opens, can effectively avoid high temperature season external heat to enter when outside air temperature is lower, cold wind circulation is driven by air pumping equipment, ventilation effect is stronger, can be that the roadbed of more wide cut freezes, and air quantity is controlled.These cover system raw material sources are extensive, and cheap, and pipe fitting connects constructability operation, has higher operability and practicality.
Accompanying drawing explanation
Fig. 1 is the utility model structural layout plan.
Fig. 2 is the artwork of the utility model in roadbed.
In figure, 1-vent header, 2-ventilation longitudinal tubule (L tubule), 3-is pipe connecting tee in length and breadth, 4-longitudinal tubule (L tubule) with into and out of air port connecting tee, 5-transverse tube connecting pipe hoop, the external plug of 6-longitudinal tubule (L tubule), 7-air intake, 8-air outlet, 9-air pumping equipment and temperature detect switch (TDS), 10-roadbed, 11-ventilation system.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The utility model relates to a kind of large scale frozen earth roadbed pressure diffuse type cooling duct system, be embedded in the middle part of roadbed, distance roadbed border 1m, include transverse and longitudinal to intersect and the multiple tracks vent header 1 interconnected and ventilation longitudinal tubule (L tubule) 2, the ventilation longitudinal tubule (L tubule) 2 being positioned at both side ends is connected to the air intake 7 and air outlet 8 that stretch out roadbed transverse direction.The internal diameter of vent header 1 is not less than 10cm, and pipe thickness is not less than 1.2mm; Ventilation longitudinal tubule (L tubule) 2 internal diameter is not less than 20cm, and pipe thickness is not less than 6.0mm.It is 0.8m that air intake 7 and air outlet 8 stretch out roadbed length.
See Fig. 1, ventilation longitudinal tubule (L tubule) 2 arranges twice along the longitudinal both sides of roadbed, between horizontally set be less than 8 road vent headers 1, avoids because each transverse pipe windage difference is excessive and cause section of tubing calm, or pipeline too much causes wind speed in transverse pipe too low, Ru Sidao.The cooling radius of vent header 1 is about about 1.5m, and therefore vent header 1 spacing should not be greater than this distance, even if to ensure that section of tubing damages, also can ensure cooling effect within the scope of roadbed full width.Vent header 1 and ventilation longitudinal tubule (L tubule) 2 are all made up of more piece short tube, are pvc pipe, concrete pipe or steel pipe.Vent header 1 and ventilation longitudinal tubule (L tubule) 2 pass through pipe connecting tee 3 in length and breadth and are connected; Ventilation longitudinal tubule (L tubule) 2 is connected with into and out of air port connecting tee 4 by longitudinal tubule (L tubule) with air outlet 8 with air intake 7; Vent header 1 is connected by transverse tube connecting pipe hoop 5.Ventilation longitudinal tubule (L tubule) 2 termination of end is provided with the external plug 6 of longitudinal tubule (L tubule).The connectors such as all threeways and pipe collar, must smear marine glue before connection, seam crossing encapsulating again after connecting, and prevent subgrade moisture from infiltrating transverse tube, affect ventilation effect.
Air intake 7 arranges a place, air intake 7 is provided with air pumping equipment and temperature detect switch (TDS) 9.Air outlet 8 arranges many places longitudinally.Air pumping equipment is the small-power air pumping equipment that power is not more than 100W, utilizes extremely frigid zones night, feature that cold season temperature is low, is introduced in roadbed body by cold air, thus reach the effect reducing roadbed temperature, promote frozen soil upper limit by presetting pipeline.Cool ambient air is driven by the air pumping equipment being built in air intake 7, and through ventilation longitudinal tubule (L tubule) 2, vent header 1 is discharged by air outlet 8 after circulating.With roadbed generation exchange heat in cyclic process, reach the effect of cooling roadbed, air pumping equipment is controlled by temperature detect switch (TDS), only opens lower than during roadbed temperature in ambient temperature.The electric power of air pumping equipment can be provided by solar cell.
During construction:
(1) as roadbed filling about 0.5-1m above to natural surface, start at roadbed end face fluting, wherein translot width, each 20cm of thickness, each 40cm of the pipe tunnel width degree of depth.
(2) carry out stringing along the translot held successfully, pod, PVC pipe is connected by prefabricated pipe collar, threeway, connects front port place and carries out daub, carry out the glue cementation of fissures after having connected.
(3) horizontal pipeline lays spacing is 1.5m, and pipe tunnel distance side slope toe 1m, blast pipe, discharge pipe depths roadbed length are 0.8m.
(4) pipe tunnel four mouths of pipe arrange outer plug, by system lock.
(5) pipeline covers about 50cm to banket, by road roller static pressure 3-5 all over after can open vibrations and roll.
(6) air intake installs air pumping equipment and temperature detect switch (TDS), and lays solar recharging, electric energy storage device, to ensure system worked well.
Content of the present utility model is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading the utility model manual to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (7)
1. a large scale frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Include transverse and longitudinal to intersect and the multiple tracks vent header (1) interconnected and ventilation longitudinal tubule (L tubule) (2), the ventilation longitudinal tubule (L tubule) (2) being positioned at both side ends is connected to the air intake (7) and air outlet (8) that stretch out roadbed transverse direction.
2. a kind of large scale according to claim 1 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Ventilation longitudinal tubule (L tubule) (2) arranges twice along the longitudinal both sides of roadbed, between horizontally set be less than 8 road vent headers (1).
3. a kind of large scale according to claim 2 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Vent header (1) and ventilation longitudinal tubule (L tubule) (2) are all made up of more piece short tube, are pvc pipe, concrete pipe or steel pipe;
Vent header (1) and ventilation longitudinal tubule (L tubule) (2) pass through pipe connecting tee (3) in length and breadth and are connected;
Ventilation longitudinal tubule (L tubule) (2) is connected with into and out of air port connecting tee (4) by longitudinal tubule (L tubule) with air outlet (8) with air intake (7);
Vent header (1) is connected by transverse tube connecting pipe hoop (5).
4. a kind of large scale according to claim 3 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Ventilation longitudinal tubule (L tubule) (2) termination of end is provided with the external plug of longitudinal tubule (L tubule) (6).
5. a kind of large scale according to claim 4 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
Air intake (7) arranges a place, air intake (7) is provided with air pumping equipment and temperature detect switch (TDS) (9);
Air outlet (8) arranges many places longitudinally.
6. a kind of large scale according to claim 5 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
The internal diameter of vent header (1) is not less than 10cm, and pipe thickness is not less than 1.2mm;
Ventilation longitudinal tubule (L tubule) (2) internal diameter is not less than 20cm, and pipe thickness is not less than 6.0mm.
7. a kind of large scale according to claim 6 frozen earth roadbed pressure diffuse type cooling duct system, is characterized in that:
It is 0.8m that air intake (7) and air outlet (8) stretch out roadbed length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779398.9U CN204325840U (en) | 2014-12-12 | 2014-12-12 | A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system |
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| CN201420779398.9U CN204325840U (en) | 2014-12-12 | 2014-12-12 | A kind of large scale frozen earth roadbed pressure diffuse type cooling duct system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480822A (en) * | 2014-12-12 | 2015-04-01 | 中交第一公路勘察设计研究院有限公司 | Mandatory diffuse type cooling ventilating pipeline system for large-scale frozen earth roadbed and construction method thereof |
| CN110565466A (en) * | 2019-09-17 | 2019-12-13 | 青海省交通科学研究院 | Cooling structure of freeway roadbed slope in permafrost region |
-
2014
- 2014-12-12 CN CN201420779398.9U patent/CN204325840U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104480822A (en) * | 2014-12-12 | 2015-04-01 | 中交第一公路勘察设计研究院有限公司 | Mandatory diffuse type cooling ventilating pipeline system for large-scale frozen earth roadbed and construction method thereof |
| CN104480822B (en) * | 2014-12-12 | 2016-07-06 | 中交第一公路勘察设计研究院有限公司 | Large scale frozen earth roadbed pressure disperse formula cooling duct system and construction method |
| CN110565466A (en) * | 2019-09-17 | 2019-12-13 | 青海省交通科学研究院 | Cooling structure of freeway roadbed slope in permafrost region |
| CN110565466B (en) * | 2019-09-17 | 2021-05-14 | 青海大学 | Cooling structure of freeway roadbed slope in permafrost region |
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