CN210768910U - Anti-freezing device of cold region tunnel drainage system - Google Patents
Anti-freezing device of cold region tunnel drainage system Download PDFInfo
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- CN210768910U CN210768910U CN201921857454.5U CN201921857454U CN210768910U CN 210768910 U CN210768910 U CN 210768910U CN 201921857454 U CN201921857454 U CN 201921857454U CN 210768910 U CN210768910 U CN 210768910U
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- tunnel
- drainage system
- thermoelectric
- drainage
- cold region
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Abstract
The utility model provides an antifreeze device of cold district tunnel drainage system, including all setting up a plurality of thermoelectric heating system of group and a plurality of group control circuit below the tunnel road surface, every thermoelectric heating system of group includes a plurality of thermoelectric refrigeration piece and a DC power supply, all establishes ties between a plurality of thermoelectric refrigeration piece and a DC power supply and forms closed circuit, the hot junction of thermoelectric refrigeration piece all set up in the tunnel on the drain pipe wall in the drainage system, the drainage system be used for carrying the water in the drip district in the tunnel outside the tunnel; each group of control circuits comprises a plurality of direct current power supplies and a temperature control switch, and the direct current power supplies are connected in parallel and then connected in series with the temperature control switch to form a control circuit; the heating efficiency is high, and the heating efficiency is higher, heats cold district tunnel drain pipe in the icing phase, prevents to freeze in the drain pipe and guarantees the normal performance of its function to avoid guaranteeing the normal life of concrete simultaneously with reducing the influence of temperature stress to tunnel lining.
Description
Technical Field
The utility model belongs to cold district tunnel drainage system field of preventing frostbite specifically is a cold district tunnel drainage system's freeze-proof device.
Background
With the rapid development of tunnel engineering, China builds a large number of cold region tunnels in Tibet, Qinghai, Gansu and other places, the ice-forming period of these places is long, and due to the influence of low temperature, if tunnel drain pipes freeze, tunnel drainage efficiency is inevitably reduced, even blocked, further the development of cold region tunnel freeze injury is aggravated, concrete is further rapidly contracted, temperature stress is accelerated, so that the fatigue and the damage of concrete are aggravated, the service life of the concrete is shortened, even the lining is caused to have disasters such as distortion, cracking or sinking, and the service life of the tunnel is seriously influenced, and even the life safety of people is harmed.
For tunnels in cold regions, currently adopted active heating anti-freezing measures are an electric tracing system and a solar power generation system, and for the common electric tracing system, the heating cable of the system has obvious thermal resistance effect and good effect, and can ensure that the back of a lining reaches normal temperature and the temperature is basically stable; although the solar power generation system can meet the requirements of energy conservation and environmental protection, the heating power is greatly influenced by weather and cannot meet the requirement of stable heating.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a cold district tunnel drainage system's freeze-proof device constitutes simply, work efficiency is higher, safety, heating are stable, has avoided reducing the normal life-span that temperature stress guaranteed the concrete simultaneously to tunnel lining's influence.
The utility model discloses a realize through following technical scheme:
an anti-freezing device of a tunnel drainage system in a cold region comprises a plurality of groups of thermoelectric heating systems and a plurality of groups of control circuits which are all arranged below the pavement of a tunnel,
each group of thermoelectric heating systems comprises a plurality of thermoelectric refrigerating sheets and a direct-current power supply, the thermoelectric refrigerating sheets and the direct-current power supply are connected in series to form a closed loop, the hot ends of the thermoelectric refrigerating sheets are arranged on the wall of a drain pipe in a drainage system in the tunnel, and the drainage system is used for conveying water in a dripping area in the tunnel to the outside of the tunnel;
each group of control circuits comprises a plurality of direct current power supplies and a temperature control switch, and the direct current power supplies are connected in parallel and then connected in series with the temperature control switch to form the control circuit.
Preferably, the drainage system comprises a central drainage pipe and an open drainage pipe, the central drainage pipe is located under the center of the cross section of the tunnel, the open drainage pipe is located under two sides of the tunnel, the central drainage pipe and the open drainage pipe are used for conveying water in a dripping area in the tunnel to the outside of the tunnel, and the hot ends of the thermoelectric refrigeration pieces are arranged on the pipe walls of the central drainage pipe and the open drainage pipe.
Furthermore, the central drain pipe and the open type drain pipe are made of plastics.
Preferably, the distance between every two adjacent groups of thermoelectric heating systems is 5-10 m along the length direction of the drainage pipe in the drainage system.
Preferably, in each group of thermoelectric heating systems, 4-6 thermoelectric cooling fins are provided.
Preferably, the model of the thermoelectric refrigerating sheet is TEC 1-12703.
Preferably, in each group of thermoelectric heating systems, the total voltage of the direct current power supply is 48-72V.
Preferably, the hot end of the thermoelectric refrigerating sheet is adhered to the wall of a drain pipe in a drainage system.
Preferably, the temperature control switch is a KSD301-V series kick type temperature controller.
Preferably, in each group of control circuits, 3-5 direct current power supplies are provided.
Compared with the prior art, the utility model discloses following profitable technological effect has at least:
the utility model relates to an anti-freezing device of a tunnel drainage system in a cold region, the drainage system is used for conveying water in a dripping region in a tunnel to the outside of the tunnel, each group of thermoelectric heating systems, the hot ends of the thermoelectric refrigeration sheets are arranged on the wall of a drain pipe in the drainage system, a plurality of thermoelectric refrigeration sheets and a direct current power supply are connected in series to form a closed loop, a plurality of direct current power supplies are connected in parallel and then form a control circuit with the temperature control switch, the drainage pipe in the drainage system can be heated, the whole drainage system is controlled by the series circuit and the parallel circuit together, the heating efficiency is high, the heating efficiency is higher, the anti-freezing requirement of the tunnel drainage system can be met, the tunnel drain pipe in the cold region is heated in the icing period, the freezing in the drain pipe is prevented, the normal performance of the function is ensured, thereby avoiding the influence of temperature stress on the tunnel lining and ensuring the normal service life of the concrete; the equipment purchase and operation cost are low, the main equipment is a thermoelectric refrigerating sheet, the heat pump is widely adopted, the system has the characteristics of environmental protection and environmental protection, and the whole system has no emission and no pollution during operation.
Furthermore, the thermoelectric refrigerating sheet is the TEC1-12703 in model number, so that the heating efficiency is high and is always greater than 1, no moving part exists, and the reliability is high.
Furthermore, the temperature control switch is a KSD301-V series sudden-jump type temperature controller, the automation is high, the temperature control switch can automatically identify the temperature in the lining, when the temperature is lower than 1 ℃, the switch is automatically closed, the whole circuit starts to work, when the temperature is higher than 5 ℃, the switch is automatically opened, the whole circuit stops working, and meanwhile, the voltage of the open circuit and the voltage of the closed circuit can be manually controlled.
Drawings
Fig. 1 is a layout diagram of a drainage system in a tunnel according to the present invention.
Fig. 2 is a layout view of two sets of thermoelectric heating systems along the open type drain pipe and the central drain pipe in the length direction of the tunnel.
Fig. 3 is a layout diagram of two groups of thermoelectric heating systems on the cross section of the water drainage pipe of the present invention.
Fig. 4 is a parallel connection structure diagram of all dc power supplies according to the present invention.
In the figure: the device comprises an open type drain pipe 1, a central drain pipe 2, a thermoelectric refrigerating piece 3, a lead 4, a direct current power supply 5 and a temperature control switch 6.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
The utility model relates to an automatic anti-freezing device of a tunnel drainage system in cold regions, which comprises a drainage system, a thermoelectric heating system and a control circuit, which are explained in detail below,
as shown in fig. 1, drainage system is current design, the utility model discloses do not modify, it is to explain, drainage system includes central drain pipe 2 and open type drain pipe 1 in the tunnel, central drain pipe 2 is located tunnel cross section's road surface center under, open type drain pipe 1 is located tunnel's road surface both sides below, the design has the district that drips in advance in the tunnel, the water meeting in district that drips flows central drain pipe 2 and open type drain pipe 1, central drain pipe 2 and open type drain pipe 1 generally have 1% ~ 2% slope when arranging, they collect respectively with the region outside the tunnel of water drainage after the water, central drain pipe 2 and open type drain pipe 1's material is PE.
As shown in fig. 2, the thermoelectric heating system is a series circuit, each group of series circuits includes 4 to 6 thermoelectric cooling plates 3 and a dc power supply 5, the thermoelectric cooling plates 3 are semiconductor cooling plates, the model is TEC1-12703, the working voltage of each thermoelectric cooling plate 3 is 12V, the working current is 3A, the temperature difference that can be generated is 0 to 60 ℃, when the thermoelectric cooling system is used, the thermoelectric cooling system heats through a hot end, the heating efficiency is very high, which is always greater than 1, no moving part is provided, and the reliability is also high; 1 direct current power supply 5 and 4-6 thermoelectric refrigerating sheets 3 are connected in series by a wire 4, and each group of series circuits can maximize the heating efficiency of the thermoelectric refrigerating sheets in the same group and cannot influence the pipeline safety; the total voltage of the direct-current power supply is 48-72V, so that the efficiency can be improved, and the cost can be saved.
Thermoelectric heating system adopts the hot junction of the thermoelectric refrigeration piece 3 of transposition to preheat the drainage system and prevents frostbite, thermoelectric refrigeration piece 3's hot junction glues on central drain pipe 2 and open drain pipe 1's outer wall, as shown in fig. 3, every section includes two sets of thermoelectric heating system, along the length direction of central drain pipe 2 and open drain pipe 1, adjacent thermoelectric heating system interval of every group is 5 ~ 10m, thereby different DC power supply 4 adopts parallel connection to reduce the fault rate, thereby realize full system automatic control through temperature detect switch 6 control.
As shown in fig. 4, the control circuit includes a parallel circuit and a temperature control switch 6, the parallel circuit connects 3-5 dc power supplies 5 on the central drain pipe 2 or the open drain pipe 1 in parallel through a wire 4 and then connects the dc power supplies in series with the temperature control switch 6, and the temperature control switch 6 controls the whole control circuit. The temperature control switch is a KSD301-V series kick type temperature controller, is a small bimetallic strip temperature controller with a shell, is single-pole single-throw, and can manually control the lowest temperature of a switch-on circuit and the highest temperature of a switch-off circuit, for example, when the temperature is lower than 1 ℃, a power supply is automatically switched on to heat a drainage system so as to prevent freezing, and when the temperature is higher than 5 ℃, the power supply is automatically switched off so as to stop heating, and meanwhile, the voltage of the switch-off circuit and the voltage of the switch-on circuit can be manually set. The parallel circuit connects all the direct current power supplies 5 in parallel, so that no mutual influence exists among different groups, and the reliability of the system is further improved.
The maximum current that can be born by the wire 4 in the series circuit is 3-5A, the maximum current that can be born by the wire 4 in the parallel circuit is determined by the number of the branch circuits, the numerical value is the number of the series circuit multiplied by 3-5A, and specifically, when the number of the branch circuits is 4, the maximum current that can be born is 15-20A.
Claims (10)
1. An anti-freezing device of a tunnel drainage system in a cold region is characterized by comprising a plurality of groups of electric heating systems and a plurality of groups of control circuits which are all arranged below the road surface of a tunnel,
each group of thermoelectric heating systems comprises a plurality of thermoelectric refrigerating sheets (3) and a direct-current power supply (5), the thermoelectric refrigerating sheets (3) and the direct-current power supply (5) are connected in series to form a closed loop, the hot ends of the thermoelectric refrigerating sheets (3) are arranged on the wall of a drain pipe in a drainage system in the tunnel, and the drainage system is used for conveying water in a dripping area in the tunnel to the outside of the tunnel;
each group of control circuits comprises a plurality of direct current power supplies (5) and a temperature control switch (6), and the direct current power supplies (5) are connected in parallel and then connected in series with the temperature control switch (6) to form the control circuit.
2. The anti-freezing device of the tunnel drainage system in the cold region according to claim 1, wherein the drainage system comprises a central drainage pipe (2) and open drainage pipes (1), the central drainage pipe (2) is located under the center of the road surface of the cross section of the tunnel, the open drainage pipes (1) are located under the two sides of the road surface of the tunnel, the central drainage pipe (2) and the open drainage pipes (1) are used for conveying water in a dripping region in the tunnel to the outside of the tunnel, and the hot ends of the thermoelectric refrigeration sheets (3) are arranged on the pipe walls of the central drainage pipe (2) and the open drainage pipes (1).
3. The antifreeze apparatus for tunnel drainage system in cold region according to claim 2, wherein the central drain pipe (2) and the open drain pipe (1) are made of plastic.
4. The antifreeze apparatus for a drainage system of a tunnel in a cold region of claim 1, wherein a distance between adjacent thermoelectric heating systems is 5 to 10m along a length direction of a drainage pipe in the drainage system.
5. The anti-freezing device for the drainage system of the cold region tunnel according to claim 1, wherein in each group of thermoelectric heating systems, 4-6 thermoelectric cooling plates (3) are provided.
6. The antifreeze apparatus for the drainage system of the cold region tunnel as claimed in claim 1, wherein the model of said thermoelectric cooling plate (3) is TEC 1-12703.
7. The antifreeze apparatus for tunnel drainage system in cold region according to claim 1, wherein the total voltage of the DC power supply (5) in each group of thermoelectric heating system is 48-72V.
8. The antifreeze apparatus for tunnel drainage system in cold region of claim 1, wherein the hot end of the thermoelectric cooling plate (3) is adhered to the wall of the drainage pipe in the drainage system.
9. The antifreeze apparatus of the drainage system of the tunnel in the cold region of claim 1, wherein the temperature control switch is a KSD301-V series snap-action thermostat.
10. The antifreeze apparatus for tunnel drainage system in cold region according to claim 1, wherein there are 3-5 DC power supplies (5) in each set of control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921857454.5U CN210768910U (en) | 2019-10-31 | 2019-10-31 | Anti-freezing device of cold region tunnel drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921857454.5U CN210768910U (en) | 2019-10-31 | 2019-10-31 | Anti-freezing device of cold region tunnel drainage system |
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| Publication Number | Publication Date |
|---|---|
| CN210768910U true CN210768910U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921857454.5U Expired - Fee Related CN210768910U (en) | 2019-10-31 | 2019-10-31 | Anti-freezing device of cold region tunnel drainage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514343A (en) * | 2023-11-14 | 2024-02-06 | 中交一公局第五工程有限公司 | High-cold tunnel pilot tunnel anti-freezing structure and construction method thereof |
-
2019
- 2019-10-31 CN CN201921857454.5U patent/CN210768910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514343A (en) * | 2023-11-14 | 2024-02-06 | 中交一公局第五工程有限公司 | High-cold tunnel pilot tunnel anti-freezing structure and construction method thereof |
| CN117514343B (en) * | 2023-11-14 | 2024-06-04 | 中交一公局第五工程有限公司 | High-cold tunnel pilot tunnel anti-freezing structure and construction method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20201031 |