CN213929928U - Centralized heat-supplementing intelligent circulating anti-freezing device of highway tunnel fire-fighting system - Google Patents
Centralized heat-supplementing intelligent circulating anti-freezing device of highway tunnel fire-fighting system Download PDFInfo
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- CN213929928U CN213929928U CN202022331247.5U CN202022331247U CN213929928U CN 213929928 U CN213929928 U CN 213929928U CN 202022331247 U CN202022331247 U CN 202022331247U CN 213929928 U CN213929928 U CN 213929928U
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Abstract
The utility model discloses a highway tunnel fire extinguishing system's concentrated concurrent heating intelligence circulation freeze-proof device, be responsible for including pond, hydrologic cycle heating mechanism, right lane tunnel, left lane tunnel, first electric butterfly valve, electric valve subassembly and fire control water supply, fire control water supply is responsible for and distributes in right lane tunnel and left lane tunnel, and with the pond is connected and is formed closed circulation circuit, hydrologic cycle heating mechanism parallel connection is on fire control water supply is responsible for, electric valve subassembly is responsible for with the fire control water supply that is located right lane tunnel and left lane tunnel and is connected, the entry end that fire control water supply is responsible for and is located right lane tunnel and left lane tunnel is connected with first electric butterfly valve. The utility model solves the problems that after the electric tracing system is damaged, the path needs to be sealed, the cover plate of the cable trench needs to be uncovered, the protective layer and the heat preservation layer are removed, and then the heat tracing cable needs to be replaced, so that the maintenance difficulty is large; the utility model has the advantages of simple structure, stable performance and longer service life.
Description
Technical Field
The utility model relates to an economize on electricity technical field especially relates to a highway tunnel fire extinguishing systems's concentrated concurrent heating intelligence circulation freeze-proof device.
Background
In highway tunnels in alpine regions, in order to prevent fire water from being frozen in pipelines and influencing the normal use of fire-fighting systems, the fire water in the pipelines is generally prevented from freezing by adopting an electric heat tracing and heat preservation mode at present. The electric heat tracing system can basically meet the anti-freezing requirement, and the main principle is that the heat of the electric heat tracing cable is transferred to a fire-fighting pipeline in a resistance heating mode, and the pipeline wall transfers the heat to fire-fighting water in the pipeline. The heating conversion rate of a general resistor is 70%, the heat transfer efficiency of the outer wall of the pipeline to fire water in the pipeline is 70%, and the comprehensive heat energy utilization rate is about 50%. In the actual operation process, the system also exposes some disadvantages: easy damage, large energy consumption, poor reliability, short service life of the system and large difficulty in construction and later maintenance and rectification.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a highway tunnel fire extinguishing systems's concentrated concurrent heating intelligence circulation freeze-proof device just aims at solving above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a centralized heat-supplementing intelligent circulation anti-freezing device of a highway tunnel fire-fighting system comprises a water pool, a water circulation heating mechanism, a right lane tunnel, a left lane tunnel, a first electric butterfly valve, an electric valve assembly and a fire-fighting water supply main pipe, wherein the fire-fighting water supply main pipe is distributed in the right lane tunnel and the left lane tunnel, and is connected with the water pool to form a closed circulation loop, the water circulation heating mechanism is connected in parallel with the fire-fighting water supply main pipe, the electric valve assembly is connected with the fire-fighting water supply main pipes positioned in the right lane tunnel and the left lane tunnel, the fire-fighting water supply main pipe is connected with a first electric butterfly valve at the inlet ends of the right lane tunnel and the left lane tunnel, the electric valve assembly and the first electric butterfly valve are used for adjusting the water flow in the fire-fighting water supply main pipe.
The utility model discloses preferred, fire control water supply main is responsible for and is located the originated end of inlet tube and establishes ties and be provided with second pipeline gate valve and first check valve, fire control water supply main is located the end of wet return and establishes ties and is provided with first pipeline gate valve and second check valve for open stop rivers in the fire control water supply main.
The utility model discloses it is preferred, water circulation heating mechanism including set up in heating element on the fire control water supply main pipe inlet tube with set up in third electric butterfly valve and third bayonet pipeline temperature sensor on the wet return of fire control water supply main pipe, heating element with first check valve is parallelly connected, connect in parallel after third electric butterfly valve and the series connection of third bayonet pipeline temperature sensor on the second check valve for detect and control flowing water and temperature in the wet return of fire control water supply main pipe.
The utility model discloses preferred, heating element includes electromagnetic boiler, second electric butterfly valve and fourth electric butterfly valve, the second end of second pipeline gate valve is established ties in proper order behind fourth electric butterfly valve, electromagnetic boiler and the second electric butterfly valve with the second end of first check valve is connected for carry out the heat that the concentrated heating supplyed the fire control water supply and is responsible for the normal water to the water of flowing through.
The utility model discloses preferred, the second end of second pipeline gate valve with be provided with the bayonet pipeline temperature sensor of fourth between the fourth electric butterfly valve, be used for detecting the temperature in the fire control water supply person in charge intake pipe.
The utility model discloses it is preferred, be provided with the pipe circulation between electromagnetic boiler and the second electric butterfly valve and increase the pump for carry out the pressure boost to the rivers after the heating, make the velocity of flow in the fire control water supply main pipe.
The utility model discloses preferred, second rivers sensor and the bayonet pipeline temperature sensor of second have connected gradually between the second end of second electric butterfly valve and first check valve, are used for detecting water velocity and temperature in the fire control water supply main pipe inlet pipe.
The utility model discloses preferred, the electrovalve group includes fifth electric butterfly valve and third pipeline gate valve, connect in the fire control water supply in the right lane tunnel and the left lane tunnel with being located after fifth electric butterfly valve and the third pipeline gate valve establish ties and be connected in the middle part of being responsible for, be used for adjusting rivers size in the fire control water supply main pipe.
The utility model discloses preferred, be located the fire control in right lane tunnel and the left lane tunnel feeds the water and is responsible for and establishes ties on has the flexible butterfly valve subassembly of a plurality of pipelines.
The utility model discloses preferred, the flexible butterfly valve subassembly of pipeline includes circulating pump and pipeline expansion bend, connect on the fire control water supply main pipe after circulating pump and the pipeline expansion bend are established ties, the circulating pump is used for improving the velocity of flow, the pipeline expansion bend is used for preventing that the fire control water supply main pipe from receiving expend with heat and contract with cold's phenomenon and fracture.
The beneficial effects of the utility model reside in that:
the utility model solves the problems that after the electric tracing system is damaged, the path needs to be sealed, the cover plate of the cable trench needs to be uncovered, the protective layer and the heat preservation layer are removed, and then the heat tracing cable needs to be replaced, so that the maintenance difficulty is large; the utility model has the advantages of simple structure, stable performance and longer service life.
Drawings
Fig. 1 is a schematic structural view of a concentrated heat-supplementing intelligent circulating anti-freezing device of a highway tunnel fire-fighting system according to the present invention;
fig. 2 is a schematic structural diagram of the water circulation heating assembly of the present invention;
fig. 3 is a schematic structural diagram of the electric butterfly valve of the present invention;
FIG. 4 is a schematic structural view of the motorized valve assembly of the present invention;
fig. 5 is a schematic structural diagram of the pipeline telescopic butterfly valve assembly of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-4: a centralized heat-supplementing intelligent circulation anti-freezing device of a highway tunnel fire-fighting system comprises a water pool 1, a water circulation heating mechanism 2, a right lane tunnel 7, a left lane tunnel 8, a first electric butterfly valve 3, an electric valve assembly 9 and a fire-fighting water supply main pipe 10, wherein the fire-fighting water supply main pipe 10 is distributed in the right lane tunnel 7 and the left lane tunnel 8, and is connected with the water pool 1 to form a closed circulation loop, the water circulation heating mechanism 2 is connected in parallel with the fire-fighting water supply main pipe 10, the water flow regulating valve is used for centrally heating flowing water to supplement heat of water in the fire water supply main pipe 10, the electric valve assembly 9 is connected with the fire water supply main pipe 10 located in the right lane tunnel 7 and the left lane tunnel 8, the inlet ends of the fire water supply main pipe 10 located in the right lane tunnel 7 and the left lane tunnel 8 are connected with the first electric butterfly valve 3, and the electric valve assembly 9 and the first electric butterfly valve 3 are both used for regulating the water flow in the fire water supply main pipe 10.
As shown in fig. 1 and 2, a second pipe gate valve 211 and a first check valve 206 are serially arranged on the beginning end of the water inlet pipe 101 of the fire-fighting water main 10, and a first pipe gate valve 210 and a second check valve 207 are serially arranged on the end of the water return pipe 102 of the fire-fighting water main 10 for starting and stopping the water flow in the fire-fighting water main 10.
As shown in fig. 1 and 2, the water circulation heating mechanism 2 includes a heating element disposed on the water inlet pipe 101 of the fire water main 10, and a third electric butterfly valve 208 and a third plug-in pipe temperature sensor 209 disposed on the water return pipe 101 of the fire water main 10, the heating element is connected in parallel with the first check valve 206, and the third electric butterfly valve 208 and the third plug-in pipe temperature sensor 209 are connected in series and then connected in parallel with the second check valve 207 for detecting and controlling the flowing water and temperature in the water return pipe 102 of the fire water main 10.
As shown in fig. 1 and 2, the heating assembly includes an electromagnetic boiler 201, a second electric butterfly valve 203 and a fourth electric butterfly valve 213, and a second end of the second pipe gate valve 211 is connected in series with the fourth electric butterfly valve 213, the electromagnetic boiler 201 and the second electric butterfly valve 203 in sequence and then connected with a second end of the first check valve 206, so as to intensively heat the water flowing through and supplement the heat of the water in the fire water main pipe 10.
As shown in fig. 1 and 2, a fourth plug-in type pipe temperature sensor 212 is disposed between the second end of the second pipe gate valve 211 and the fourth electric butterfly valve 213, and is configured to detect a temperature of the water inlet pipe 101 of the fire main 10.
As shown in fig. 1 and 2, a pipe circulation increasing pump 202 is disposed between the electromagnetic boiler 201 and the second electric butterfly valve 203 for increasing the pressure of the heated water flow, so that the flow rate of the water flow in the fire water main 10 is increased.
As shown in fig. 1 and 2, a second water flow sensor 204 and a second plug-in pipe temperature sensor 205 are sequentially connected between the second electric butterfly valve 203 and the second end of the first check valve 206, and are used for detecting the water flow speed and temperature in the water inlet pipe 10 of the fire water main.
As shown in fig. 1 and 4, the electric valve assembly 9 includes a fifth electric butterfly valve 91 and a third pipe gate valve 92, and the fifth electric butterfly valve 91 and the third pipe gate valve 92 are connected in series and then connected to the middle of the fire water main 10 located in the right lane tunnel 7 and the left lane tunnel 8, so as to adjust the water flow in the fire water main 10.
As shown in fig. 1 and 5, a plurality of pipeline expansion butterfly valve assemblies 4 are connected in series on the fire water main pipe 10 located in the right lane tunnel 7 and the left lane tunnel 8, each pipeline expansion butterfly valve assembly 4 comprises a circulating pump 41 and a pipeline expansion piece 42, the circulating pump 41 and the pipeline expansion piece 42 are connected in series and then connected to the fire water main pipe 10, the circulating pump 41 is used for increasing the flow rate of water, and the pipeline expansion piece 42 is used for preventing the fire water main pipe 10 from breaking due to expansion caused by heat and contraction caused by cold.
The working principle of the utility model is as follows:
as shown in fig. 1-4, in the early winter, when the first plug-in type pipeline temperature sensor 6 at the most unfavorable point and the main control point outside the tunnel displays that the water temperature in the fire water main pipe 10 is lower than 8 ℃ or the environmental temperature is lower than 5 ℃, the second electric butterfly valve 203, the third electric butterfly valve 208 and the fourth electric butterfly valve 213 are opened, the pipeline circulating pressure pump 202 is started after the first electric butterfly valve 3 and the fifth electric butterfly valve 91 are closed, so that the water in the fire water main pipe 10 flows along the direction marked by the arrow in fig. 1, and the anti-freezing function of the system is realized by using the heat in the tunnel and the underground water tank 1. When the water temperature in the fire water supply main pipe 10 is close to 5 ℃, the electromagnetic boiler 201 is started for heat compensation, so that the water temperature in the fire pipe network in winter is not lower than 5 ℃, and when the water temperature is higher than 8 ℃, the heat compensation is stopped, so that the economical efficiency, the safety and the reliability of operation are considered, and the system function is not influenced under the fire working condition.
In spring and summer, when the first plug-in type pipeline temperature sensor 6 at the most unfavorable point and the main control point outside the tunnel displays that the temperature of water in the pipeline is higher than 8 ℃ or the ambient temperature is higher than 5 ℃, the second electric butterfly valve 203, the third electric butterfly valve 208 and the fourth electric butterfly valve 213 are closed, the pipeline circulating pressure pump 202 is closed after the first electric butterfly valve 3 and the fifth electric butterfly valve 91 are opened, the water in the fire-fighting water supply main pipe 10 in the tunnel flows along the direction marked by the arrow in fig. 1, when the pressure in the fire-fighting water supply main pipe 10 in the tunnel is reduced and the water flow speed is reduced, the first check valve 206 is closed, the electromagnetic boiler 201 is closed, and the water in the fire-fighting water supply main pipe 10 is pressurized through the pipeline circulating pressure pump 202, so that the water flow speed is improved.
As shown in figures 1-4, the water temperature of the buried high-level water tank 1 which saves energy by utilizing terrestrial heat and water circulation is basically kept at 17 ℃, and the anti-freezing water temperature of fire water is not lower than 5 ℃ according to the design specification. Calculated in this way, 500m3The water in the water pool can provide heat of more than 6000000, and the heat of the high-level water pool 1 is circulated into the fire-fighting water supply main pipe 10, so that 8720KWh of electric energy can be saved, and the geothermal heat can be fully utilized in the whole winter. 1m3The temperature of water rises by 1 ℃ and needs 1000 heat of a large card, and 1KWh of electric energy can enable the electric tracing cable to generate 2880KJ of heat, which is equivalent to 688 of the large card;
as shown in fig. 1-4, compared with an electric tracing system, the electromagnetic boiler 201 with a higher electric energy utilization rate has a heat quantity difference of 86 kcal per KWh, and the electromagnetic boiler 201 directly heats the water medium, so as to reduce the intermediate loss, while the heat generation conversion rate of the electric tracing resistor is 70%, the heat transfer efficiency of the outer wall of the fire-fighting water supply main pipe 10 to the medium in the pipeline is 70%, the intermediate energy loss is almost half, so as to greatly reduce the energy loss, and 1KWh electric energy can enable the inductor to generate 3240KJ heat, which is equivalent to 774 kcal heat;
as shown in figures 1-4, degree of automation is high, the operation cost is low, the utility model discloses temperature sensor, rivers sensor possess the function of on-the-spot demonstration, wired network and wireless network transmission to workstation, can reflect various data and information that will gather in the pipe network directly perceivedly, through PLC logical operation and program setting, link with the fire control workstation, reduce the personnel's on duty's input, realize automatic operation.
And equipment is easy to replace in the operation process, and the problems that after an electric tracing system is damaged, a path needs to be sealed, a cable trench cover plate needs to be uncovered, a protective layer and a heat insulation layer need to be removed, then the heat tracing cable needs to be replaced, and the maintenance difficulty is high are solved.
The present invention can be implemented by various modifications without departing from the spirit and spirit of the present invention, and the above description is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the present invention, and all the equivalent structural changes made by using the contents of the present invention and the accompanying drawings are included in the scope of the present invention.
Claims (10)
1. A centralized heat-supplementing intelligent circulating anti-freezing device of a highway tunnel fire-fighting system is characterized by comprising a water pool, a water circulating heating mechanism, a right lane tunnel, a left lane tunnel, a first electric butterfly valve, an electric valve assembly and a fire-fighting water supply main pipe, wherein the fire-fighting water supply main pipe is distributed in the right lane tunnel and the left lane tunnel, and is connected with the water pool to form a closed circulation loop, the water circulation heating mechanism is connected in parallel with the fire-fighting water supply main pipe, the electric valve assembly is connected with the fire-fighting water supply main pipes positioned in the right lane tunnel and the left lane tunnel, the fire-fighting water supply main pipe is connected with a first electric butterfly valve at the inlet ends of the right lane tunnel and the left lane tunnel, the electric valve assembly and the first electric butterfly valve are used for adjusting the water flow in the fire-fighting water supply main pipe.
2. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 1, wherein a second pipeline gate valve and a first check valve are arranged in series on the beginning end of the water inlet pipe of the fire-fighting water supply main pipe, and a first pipeline gate valve and a second check valve are arranged in series on the end of the water return pipe of the fire-fighting water supply main pipe, and are used for starting and stopping water flow in the fire-fighting water supply main pipe.
3. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 2, wherein the water circulating heating mechanism comprises a heating component arranged on a water inlet pipe of the fire-fighting water supply main pipe, and a third electric butterfly valve and a third plug-in pipeline temperature sensor which are arranged on a water return pipe of the fire-fighting water supply main pipe, wherein the heating component is connected in parallel with the first check valve, and the third electric butterfly valve and the third plug-in pipeline temperature sensor are connected in series and then connected in parallel with the second check valve, so as to detect and control the flowing water and the temperature in the water return pipe of the fire-fighting water supply main pipe.
4. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 3, wherein the heating component comprises an electromagnetic boiler, a second electric butterfly valve and a fourth electric butterfly valve, and the second end of the second pipeline gate valve is connected with the second end of the first check valve after being sequentially connected with the fourth electric butterfly valve, the electromagnetic boiler and the second electric butterfly valve in series and is used for performing centralized heating on water flowing through to supplement heat of water in the fire-fighting water supply main pipe.
5. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 4, wherein a fourth plug-in type pipeline temperature sensor is arranged between the second end of the second pipeline gate valve and the fourth electric butterfly valve and is used for detecting the temperature in the water inlet pipe of the fire-fighting water supply main pipe.
6. The intelligent centralized heat-supplementing circulating anti-freezing device for the road tunnel fire-fighting system according to claim 5, wherein a pipeline circulation increasing pump is arranged between the electromagnetic boiler and the second electric butterfly valve and is used for pressurizing the heated water flow so as to increase the flow velocity of the water flow in the fire-fighting water supply main pipe.
7. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 6, wherein a second water flow sensor and a second plug-in pipeline temperature sensor are sequentially connected between a second electric butterfly valve and the second end of the first check valve and used for detecting the water flow speed and the temperature in the water inlet pipe of the fire-fighting water supply main pipe.
8. The intelligent centralized heat-supplementing circulation anti-freezing device for the highway tunnel fire-fighting system according to claim 7, wherein the electric valve set comprises a fifth electric butterfly valve and a third pipeline gate valve, and the fifth electric butterfly valve and the third pipeline gate valve are connected in series and then connected to the middle of a fire-fighting water supply main pipe positioned in a right lane tunnel and a left lane tunnel, and are used for adjusting the water flow in the fire-fighting water supply main pipe.
9. The intelligent centralized heat-supplementing circulating anti-freezing device for the road tunnel fire-fighting system according to claim 8, wherein a plurality of pipeline expansion butterfly valve assemblies are connected in series on the fire-fighting water supply main pipes in the right lane tunnel and the left lane tunnel.
10. The intelligent centralized heat-supplementing circulating anti-freezing device for the highway tunnel fire-fighting system according to claim 9, wherein the pipeline expansion butterfly valve assembly comprises a circulating pump and a pipeline expansion piece, the circulating pump and the pipeline expansion piece are connected in series and then are connected to the fire-fighting water supply main pipe, the circulating pump is used for increasing the flow velocity of water, and the pipeline expansion piece is used for preventing the fire-fighting water supply main pipe from being broken due to expansion caused by heat and contraction caused by cold.
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|---|---|---|---|
| CN202022331247.5U CN213929928U (en) | 2020-10-19 | 2020-10-19 | Centralized heat-supplementing intelligent circulating anti-freezing device of highway tunnel fire-fighting system |
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| CN202022331247.5U CN213929928U (en) | 2020-10-19 | 2020-10-19 | Centralized heat-supplementing intelligent circulating anti-freezing device of highway tunnel fire-fighting system |
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