CN211875409U - Water heat tracing system for preventing pipeline from freezing - Google Patents
Water heat tracing system for preventing pipeline from freezing Download PDFInfo
- Publication number
- CN211875409U CN211875409U CN201922401223.XU CN201922401223U CN211875409U CN 211875409 U CN211875409 U CN 211875409U CN 201922401223 U CN201922401223 U CN 201922401223U CN 211875409 U CN211875409 U CN 211875409U
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- water
- subsystem
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- pipe
- radiating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 238000007710 freezing Methods 0.000 title description 14
- 230000008014 freezing Effects 0.000 title description 6
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000001502 supplementing effect Effects 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000001034 Frostbite Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a water heat tracing system for pipeline freeze protection, which comprises a water supply subsystem, a hot water distributor, N radiating pipes, a backwater water collector and a backwater subsystem, wherein the water supply subsystem is connected with the water supply system of the existing heat source heat exchange station; the water supply subsystem is communicated with the N radiating pipes through a hot water distributor, and the hot water distributor distributes the fluid of the water supply subsystem to each radiating pipe; each radiating pipe is wound on a pipeline to be insulated, and medium-temperature water or low-temperature water flows in all the radiating pipes; the backwater collector collects backwater of each radiating pipe to the backwater subsystem; the water return subsystem is connected to a water return system of the existing heat source heat exchange station; the heat-insulating layer is arranged on the heat-insulated pipeline wound with the radiating pipes, and the radiating pipes are positioned between the heat-insulating layer and the heat-insulated pipeline. The utility model discloses the cooling tube that utilizes the current heat source of low price to adopt little pipe diameter realizes that the pipeline is frostproofing.
Description
Technical Field
The utility model relates to a pipeline field of preventing frostbite especially relates to a water companion thermal system for pipeline is frostproofing.
Background
In cold regions, some underground spaces of buildings are not heated integrally, but water supply pipelines such as indoor fire hydrant, spraying and the like are laid near local regions such as a very closed inlet region, a direct lighting open region, an exhaust and exhaust port and the like. According to the fire-fighting design specification, a wet system is adopted in a place with the indoor temperature not lower than 4 ℃ and not higher than 70 ℃.
In order to solve the problem of pipeline anti-freezing, an auxiliary heat tracing system is required to be designed under the condition that only heat preservation is carried out and the requirement cannot be met; in some outdoor pipeline laying areas with large-depth frozen soil layers, in order to reduce the pipeline laying depth or reduce the basement roof laying soil, auxiliary heat tracing anti-freezing treatment needs to be carried out on the outdoor pipelines.
The electric tracing is widely applied in northern areas at present, is usually used for preventing freezing of rooms in non-heating areas and outdoor (local) water supply and fire-fighting pipelines, and has higher investment cost for owners due to larger consumption in some actual projects at present.
Therefore, it is necessary to develop a water heat tracing system for preventing freezing of pipelines to solve the problem of high investment cost of electric heat tracing owners.
Disclosure of Invention
The utility model provides a water companion heat system for pipeline is frost-proof has municipal administration heat supply condition, waste heat recovery utilization condition or solar energy and assists the heat condition because of the northern region, utilizes these low-priced heat sources to adopt little pipe diameter low-temperature water companion heat to realize that the pipeline is frostproofing.
Realize the utility model discloses the technical scheme of purpose as follows:
a water tracing system for freeze protection of pipes comprising:
the system comprises a water supply subsystem, a heat source heat exchange station and a heat recovery subsystem, wherein the water supply subsystem is connected with a water supply system of the existing heat source heat exchange station, and the existing heat source heat exchange station is a heat exchange station configured by an existing self-built boiler room, a municipal heating system, a waste heat recovery system and a solar auxiliary heating system;
the hot water distributor is used for communicating the water supply subsystem with the N radiating pipes and distributing the fluid of the water supply subsystem to each radiating pipe;
each radiating pipe is wound on one insulated pipeline, and medium-temperature water or low-temperature water flows in all the radiating pipes;
the backwater water collector collects backwater of each radiating pipe to the backwater subsystem;
the water return subsystem is connected to a water return system of the existing heat source heat exchange station;
the heat-insulating layer is arranged on the heat-insulated pipeline wound with the radiating pipes, and the radiating pipes are located between the heat-insulating layer and the heat-insulated pipeline.
As a further improvement of the utility model, the cooling tube is a winding plastic cooling water tube with a minimum caliber.
As a further improvement of the utility model, the water supply subsystem comprises a water supply pipeline, and the water return subsystem comprises a water return pipeline;
the water supply pipeline is connected with a water supply system of the existing heat source heat exchange station, and the water return pipeline is connected with a water return system of the existing heat source heat exchange station.
As a further improvement of the utility model, the water-saving device also comprises a circulating subsystem, wherein the water outlet end of the circulating subsystem is connected with a return water collector, and the water inlet end of the circulating subsystem is connected with a hot water distributor;
and the backwater of the radiating pipe enters the radiating pipe again for recycling after exchanging heat with the heat source through the circulating subsystem.
As a further improvement of the utility model, the circulation subsystem comprises a circulation pipeline, a circulation pump and a one-way valve which are arranged on the circulation pipeline, and the one-way valve is arranged close to the water inlet end of the circulation pipeline;
the circulating pump sends the return water into the radiating pipe again through the circulating pipeline for recycling.
As a further improvement, the circulating subsystem further comprises a plate heat exchanger, and the circulating pump sends the return water into the plate heat exchanger through the circulating pipeline and then sends the return water into the cooling tube for recycling after the return water is heated.
As a further improvement of the utility model, the circulation subsystem further comprises a connecting pipe, a switch valve is arranged on the connecting pipe, and the connecting pipe is arranged between the water inlet end and the water return end of the plate heat exchanger;
opening a switch valve to close a valve connected with the plate heat exchanger on the circulating pipeline, and enabling return water to flow through a connecting pipe and enter the radiating pipe;
and closing the switch valve to open the valve, and enabling the backwater to enter the radiating pipe after entering the plate heat exchanger to be heated.
As a further improvement, the circulating pump is opened when the return water temperature of the radiating tube is lower than 40 ℃, and the circulating pump is closed when the return water temperature of the radiating tube is higher than 45 ℃.
As a further improvement, the utility model also comprises a water supplementing subsystem, the water supplementing subsystem is communicated with the circulating subsystem, and the water supplementing subsystem supplements water to the circulating subsystem.
As a further improvement, the water replenishing subsystem comprises a water replenishing pipe, a water replenishing pump and an expansion tank, the water replenishing pump is installed on the water replenishing pipe, and the expansion tank is communicated with the water replenishing pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. because of the northern regional municipal administration heat supply condition, waste heat recovery utilization condition or the solar energy auxiliary heating condition that has, the utility model discloses utilize the present heat source of low price to adopt the cooling tube of little pipe diameter to realize that the pipeline is frostproofing.
2. In order to guarantee the anti-freezing performance of the insulated pipeline, the utility model discloses in set up the heat preservation and realize minimum heat loss and lower heat consumption.
Drawings
FIG. 1 is a functional block diagram of a water tracing system;
FIG. 2 is a schematic heat exchange diagram of a water tracing system;
FIG. 3 is a schematic view of the heat pipe being wrapped around the pipe to be insulated;
fig. 4 is a schematic cross-sectional view illustrating the radiating pipe wound around the insulated pipe.
In the figure, 100, a water supply subsystem; 200. a radiating pipe; 300. a water return subsystem; 400. a circulation subsystem; 10. a pipe to be insulated; 20. and (7) an insulating layer.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
The traditional water heat tracing system is that thermal pipes such as heating pipes and steam pipes and pipelines with anti-freezing requirements are laid in a same ditch, so that the environmental temperature in the ditch is increased, and the anti-freezing effect is achieved. The water heat tracing system of the embodiment is characterized in that the existing municipal or independent heat source is utilized, a set of medium-low temperature heat exchange system is independently arranged, and the heat is provided by winding the radiating pipes in parallel to play a role in preventing freezing.
As shown in fig. 1, the present invention provides a water heat tracing system for preventing freezing of pipeline, which comprises a water supply subsystem 100, a hot water distributor, N radiating pipes 200, a backwater water collector and a backwater subsystem 300. Wherein:
the water supply subsystem 100 is connected with a water supply system of an existing heat source heat exchange station, the water return subsystem 300 is connected with a water return system of the existing heat source heat exchange station, and the existing heat source heat exchange station is a heat exchange station configured by an existing self-built boiler room, a municipal heating system, a waste heat recovery system and a solar auxiliary heat system.
The water supply subsystem 100 is communicated with the N radiating pipes 200 through a hot water distributor, and the hot water distributor distributes the fluid of the water supply subsystem 100 to each radiating pipe 200; each radiating pipe 200 is wound on one insulated pipeline 10, and medium-temperature water or low-temperature water flows in all the radiating pipes 200; the backwater collector collects the backwater of each radiating pipe 200 to the backwater subsystem 300.
Because of the northern regional boiler room condition of building oneself, municipal administration heat supply condition, waste heat recovery condition and solar energy auxiliary heating condition of having, the utility model discloses utilize the present heat source of low price to adopt the cooling tube 200 of little pipe diameter to realize that the pipeline is frostproofing. In addition, the embodiment utilizes the flowing medium for heat conduction, so that the running cost is low.
As shown in fig. 3 and 4, the pipe 10 to be insulated, around which the radiating pipe 200 is wound, is provided with the insulating layer 20, and the radiating pipe 200 is located between the insulating layer 20 and the pipe 10 to be insulated.
Since the backwater temperature of the backwater subsystem 300 is lower than 40 ℃, in order to ensure the anti-freezing performance of the insulated pipeline 10, the insulating layer 20 is arranged to realize the minimum heat loss and the lower heat consumption.
The first implementation mode comprises the following steps:
the embodiment provides a water heat tracing system for preventing pipelines from being frozen, which comprises a water supply subsystem 100, a hot water distributor, N radiating pipes 200, a backwater water collector and a backwater subsystem 300. Wherein:
the water supply subsystem 100 is connected to a water supply system of an existing heat source heat exchange station, the water return subsystem 300 is connected to a water return system of the existing heat source heat exchange station, and the existing heat source heat exchange station is a heat exchange station configured by an existing self-built boiler room, a municipal heating system, a waste heat recovery system and a solar auxiliary heat system.
The water supply subsystem 100 is communicated with the N radiating pipes 200 through a hot water distributor, and the hot water distributor distributes the fluid of the water supply subsystem 100 to each radiating pipe 200; each radiating pipe 200 is wound on one insulated pipeline 10, and medium-temperature water or low-temperature water flows in all the radiating pipes 200; the backwater collector collects the backwater of each radiating pipe 200 to the backwater subsystem 300.
The water supply subsystem 100 comprises a water supply pipeline, and the water return subsystem 300 in the water heat tracing system comprises a water return pipeline; the water supply pipeline is connected with a water supply system of the existing heat source heat exchange station, and the water return pipeline is connected with a water return system of the existing heat source heat exchange station.
Because of the northern regional boiler room condition of building oneself, municipal administration heat supply condition, waste heat recovery condition and solar energy auxiliary heating condition of having, the utility model discloses utilize the present heat source of low price to adopt the cooling tube 200 of little pipe diameter to realize that the pipeline is frostproofing. In addition, the embodiment utilizes the flowing medium for heat conduction, so that the running cost is low.
As shown in fig. 3 and 4, the pipe 10 to be insulated, around which the radiating pipe 200 is wound, is provided with the insulating layer 20, and the radiating pipe 200 is located between the insulating layer 20 and the pipe 10 to be insulated.
Since the backwater temperature of the backwater subsystem 300 is lower than 40 ℃, in order to ensure the anti-freezing performance of the insulated pipeline 10, the insulating layer 20 is arranged to realize the minimum heat loss and the lower heat consumption.
The second embodiment:
the embodiment provides a water heat tracing system for preventing pipelines from being frozen, which comprises a water supply subsystem 100, a hot water distributor, N radiating pipes 200, a backwater water collector and a backwater subsystem 300. Wherein:
the water supply subsystem 100 is connected to a water supply system of an existing heat source heat exchange station, the water return subsystem 300 is connected to a water return system of the existing heat source heat exchange station, and the existing heat source heat exchange station is a heat exchange station configured by an existing self-built boiler room, a municipal heating system, a waste heat recovery system and a solar auxiliary heat system.
The water supply subsystem 100 is communicated with the N radiating pipes 200 through a hot water distributor, and the hot water distributor distributes the fluid of the water supply subsystem 100 to each radiating pipe 200; each radiating pipe 200 is wound on one insulated pipeline 10, and medium-temperature water or low-temperature water flows in all the radiating pipes 200; the backwater collector collects the backwater of each radiating pipe 200 to the backwater subsystem 300.
As shown in fig. 2, the water heat tracing system includes a circulation subsystem 400 and a water supplement subsystem in addition to the water supply subsystem 100, the hot water distributor, the N radiating pipes 200, the backwater collector and the backwater subsystem 300.
Specifically, the circulation subsystem 400 is connected to a return water collector and a hot water distributor; the backwater of the radiating pipe 200 enters the radiating pipe 200 again through the circulation subsystem 400 for recycling. The water replenishing subsystem is communicated with the circulation subsystem 400, and the water replenishing subsystem replenishes water to the circulation subsystem 400.
The optimal circulation subsystem 400 comprises a circulation pipeline, a circulation pump and a one-way valve which are arranged on the circulation pipeline, and a plate heat exchanger, wherein the one-way valve is arranged close to the water inlet end of the circulation pipeline; the circulating pump sends the return water into the radiating pipe 200 again through the circulating line and recycles, and the circulating pump sends the return water into the plate heat exchanger through the circulating line and heats up and then sends into the radiating pipe 200 again and recycles.
The circulation subsystem 400 comprises a circulation pipeline, a circulation pump, a one-way heat exchanger and a plate heat exchanger, and also comprises a connecting pipe, wherein a switch valve is arranged on the connecting pipe, and the connecting pipe is arranged between the water inlet end and the water return end of the plate heat exchanger; opening a switch valve to close a valve connected with the plate heat exchanger on the circulating pipeline, and enabling return water to flow into the radiating pipe 200 through the connecting pipe; the switch valve is closed and the valve is opened, and the backwater enters the plate heat exchanger to be heated and then enters the radiating pipe 200. Preferably, the circulation pump is turned on when the backwater temperature of the radiating pipe 200 is lower than 40 deg.c, and the circulation pump is turned off when the backwater temperature of the radiating pipe 200 is higher than 45 deg.c.
The optimized water supplementing subsystem comprises a water supplementing pipe, a water supplementing pump and an expansion tank, wherein the water supplementing pump is installed on the water supplementing pipe, and the expansion tank is communicated with the water supplementing pipe.
The water heat tracing system of the embodiment is used for medium and low temperature heat tracing, the circulating pump is started when the return water temperature is lower than 40 ℃, and the circulating pump is stopped when the return water temperature is higher than 45 ℃.
The third embodiment is as follows:
on the basis of the first embodiment and the second embodiment, a specific application example is given in the embodiment.
The underground parking lot before a certain station, three underground layers, a negative layer are municipal traffic roads and public transport parking transfer areas, the number of normally open ports is more, and except pipelines behind the valve of the pre-acting spraying system, other water supply pipelines and fire fighting pipelines all need to be accompanied with heat, insulated and anti-freezing. The lowest environment temperature is-10 ℃, the highest environment temperature is 40 ℃, the temperature of the pipeline needs to be maintained at 5 ℃, and the heat-insulating material adopts rubber and plastic.
The embodiment adopts high-temperature heat medium water which is supplied in a municipal centralized way and is accessed to a parking lot-1F heat exchange station from an adjacent building basement, and the temperature of the heat medium water supply and return is 95-70 ℃. The heat exchange station has a building area of 20 square meters, and is internally provided with a plate heat exchanger, a heat tracing hot water circulating pump, a water collecting and distributing device and the like (as shown in figure 2). The heat tracing pipeline is a heat-resistant polyethylene pipe, the pipe diameter is DN15, the length is 3000 meters, a single heat tracing pipeline is wound and laid, the heat insulation layer 20 is a rubber-plastic pipe shell with the thickness of 30mm, and the heat dissipation capacity of the heat-insulated pipeline 10 is 7KW when the water temperature is not lower than 5 ℃; the temperature of the supply water and the return water of the radiating pipe 200 is 65-40 ℃, and the heat exchange quantity is 7.3KW (larger than the heat dissipation quantity). The water heat tracing is low-temperature heat tracing, the circulating pump is started when the return water temperature is lower than 40 ℃, and the pump is stopped when the return water temperature is higher than 45 ℃.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A water tracing system for freeze protection of pipes comprising:
the system comprises a water supply subsystem, a heat source heat exchange station and a heat recovery subsystem, wherein the water supply subsystem is connected with a water supply system of the existing heat source heat exchange station, and the existing heat source heat exchange station is a heat exchange station configured by an existing self-built boiler room, a municipal heating system, a waste heat recovery system and a solar auxiliary heating system;
the hot water distributor is used for communicating the water supply subsystem with the N radiating pipes and distributing the fluid of the water supply subsystem to each radiating pipe;
each radiating pipe is wound on one insulated pipeline, and medium-temperature water or low-temperature water flows in all the radiating pipes;
the backwater water collector collects backwater of each radiating pipe to the backwater subsystem;
the water return subsystem is connected to a water return system of the existing heat source heat exchange station;
the heat-insulating layer is arranged on the heat-insulated pipeline wound with the radiating pipes, and the radiating pipes are located between the heat-insulating layer and the heat-insulated pipeline.
2. The water tracing system of claim 1, wherein said heat pipe is a minimum diameter, wrappable plastic heat pipe.
3. The water tracing system of claim 1, wherein said water supply subsystem comprises a water supply conduit and said water return subsystem comprises a water return conduit;
the water supply pipeline is connected with a water supply system of the existing heat source heat exchange station, and the water return pipeline is connected with a water return system of the existing heat source heat exchange station.
4. The water heat tracing system of any one of claims 1-3, further comprising a circulation subsystem, an outlet end of the circulation subsystem being connected to a return water collector, an inlet end of the circulation subsystem being connected to a hot water distributor;
and the backwater of the radiating pipe enters the radiating pipe again for recycling after exchanging heat with the heat source through the circulating subsystem.
5. The water tracing system of claim 4, wherein the circulation subsystem comprises a circulation pipe, a circulation pump disposed on the circulation pipe, and a one-way valve mounted proximate to a water inlet end of the circulation pipe;
the circulating pump sends the return water into the radiating pipe again through the circulating pipeline for recycling.
6. The water heat tracing system of claim 5 wherein the circulation subsystem further comprises a plate heat exchanger, and the circulation pump feeds the return water through the circulation pipe into the plate heat exchanger to be heated and then fed into the radiating pipe again for circulation.
7. The water heat tracing system of claim 6, wherein the circulation subsystem further comprises a connecting pipe, a switch valve is arranged on the connecting pipe, and the connecting pipe is installed between the water inlet end and the water return end of the plate heat exchanger;
opening a switch valve to close a valve connected with the plate heat exchanger on the circulating pipeline, and enabling return water to flow through a connecting pipe and enter the radiating pipe;
and closing the switch valve to open the valve, and enabling the backwater to enter the radiating pipe after entering the plate heat exchanger to be heated.
8. The water heat tracing system of claim 7, wherein the circulation pump is turned on when the backwater temperature of the radiating pipe is lower than 40 ℃, and the circulation pump is turned off when the backwater temperature of the radiating pipe is higher than 45 ℃.
9. The water tracing system of claim 4, further comprising a water replenishment subsystem in communication with the circulation subsystem, the water replenishment subsystem replenishing the circulation subsystem with water.
10. The water tracing system of claim 9, wherein the water replenishment subsystem comprises a water replenishment pipe, a water replenishment pump mounted on the water replenishment pipe, and an expansion tank in communication with the water replenishment pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401223.XU CN211875409U (en) | 2019-12-27 | 2019-12-27 | Water heat tracing system for preventing pipeline from freezing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401223.XU CN211875409U (en) | 2019-12-27 | 2019-12-27 | Water heat tracing system for preventing pipeline from freezing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211875409U true CN211875409U (en) | 2020-11-06 |
Family
ID=73262403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922401223.XU Expired - Fee Related CN211875409U (en) | 2019-12-27 | 2019-12-27 | Water heat tracing system for preventing pipeline from freezing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211875409U (en) |
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2019
- 2019-12-27 CN CN201922401223.XU patent/CN211875409U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |