CN211782064U - Anti-freezing device for buried pipe - Google Patents
Anti-freezing device for buried pipe Download PDFInfo
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- CN211782064U CN211782064U CN201922443122.9U CN201922443122U CN211782064U CN 211782064 U CN211782064 U CN 211782064U CN 201922443122 U CN201922443122 U CN 201922443122U CN 211782064 U CN211782064 U CN 211782064U
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- storage tank
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- water storage
- buried pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model discloses a buried pipe freeze-proof device, it belongs to ground source heat pump's technical field. The anti-freezing device is used for solving the problems of high anti-freezing cost, environmental pollution and the like of the small ground source heat pump unit. The anti-freezing device for the buried pipe is formed by connecting a water storage tank (6) with an exhaust pipe (4) and a water return pipe (3) with a water return port (10) through a water storage tank cover (5) at the top, connecting a submersible pump (7) arranged in the water storage tank (6) with a U-shaped buried pipe (1) with a water outlet port (9) through a water outlet pipe (8), and connecting the water return pipe (3) with an exhaust valve (2). The anti-freezing device for the buried pipe can be widely applied to anti-freezing work of a small ground source heat pump, and has the advantages of obvious energy-saving effect, no environmental pollution, low construction cost and convenience in later maintenance.
Description
Technical Field
The utility model relates to a buried pipe circulation return water device for among small-size ground source heat pump system, in particular to buried pipe freeze-proof device for small-size ground source heat pump set.
Background
The shallow geothermal energy is green low-carbon renewable clean energy and has the characteristics of abundant reserves, wide distribution, stability, reliability, low development cost and the like. The development and utilization of shallow geothermal energy are mainly realized by heat pump technology. The ground source heat pump technology is widely popularized, and the promotion of the development of the shallow geothermal energy industry has important significance for energy conservation and emission reduction in China.
When the conventional small ground source heat pump is applied to heating in the northern area, when the ground source heat pump system does not operate, the circulating water on the buried side is frozen because the external environment temperature is lower than zero, the system cannot be started again to operate, and even the pipeline can be burst. In order to prevent such a situation, an antifreezing medium is generally injected into the U-shaped pipe as a circulating heat exchange medium, and such a medium is generally glycerol, ethylene glycol, or the like. At present, the existing antifreezing medium has higher production cost, and the construction cost of a ground source heat pump system can be increased by using a large amount of antifreezing medium. Meanwhile, as the buried pipe heat exchanger is deeply buried underground, once circulating media leak in the using process, underground water and soil are inevitably polluted, and a series of serious environmental problems are caused.
In order to protect the natural environment, how to use water as a circulating heat exchange medium and prevent freezing is an urgent technical problem to be solved when a small ground source heat pump is popularized in a large scale in northern cold regions.
Disclosure of Invention
The utility model overcomes not enough among the prior art provides a ground pipe laying freeze-proof device that can only use water as circulation heat transfer medium.
In order to solve the problems of the prior art, the utility model discloses a realize through following technical scheme: the anti-freezing device of the buried pipe is characterized in that a water storage tank is connected with an exhaust pipe and a return pipe with a return port through a water storage tank cover at the top, and a submersible pump arranged in the water storage tank is connected with a U-shaped buried pipe with a return port through a water outlet pipe.
The utility model discloses also can realize through following technical scheme: the water return pipe is connected with the exhaust valve.
The utility model discloses also can realize through following technical scheme: the inner container and the outer container of the water storage tank are made of plastics, and the middle of the water storage tank is made of foaming heat-insulating materials.
The utility model discloses can also realize through following technical scheme: the water storage tank cover is made of plastics.
Compared with the prior art, the beneficial effects of the utility model are that: when the heat pump unit stops operating, hydroenergy as heat exchange medium flows into the aqua storage tank through the wet return, can effectually prevent that the aqueous medium in the surface pipeline from freezing because of the temperature is low excessively to reach the purpose that reduces the cost of preventing frostbite and environmental protection.
Drawings
Fig. 1 is a schematic sectional structure of the present invention.
In the drawings: 1-U-shaped buried pipe, 2-exhaust valve, 3-water return pipe, 4-exhaust pipe, 5-water storage tank cover, 6-water storage tank, 7-submersible pump, 8-water outlet pipe, 9-water outlet and 10-water return port.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description: the anti-freezing device of the buried pipe is characterized in that the anti-freezing device of the buried pipe is composed of a water storage tank 6, a water storage tank cover 5 at the top is connected with an exhaust pipe 4 and a water return pipe 3 with a water return port 10, a submersible pump 7 arranged in the water storage tank 6 is connected with a U-shaped buried pipe 1 with a water outlet 9 through a water outlet pipe 8, the water return pipe 3 is connected with an exhaust valve 2, an inner container and an outer container of the water storage tank 6 are made of plastics, the middle of the inner container is made of foaming heat-insulating materials, and the water storage.
Use the utility model discloses before, earlier will the utility model discloses well U type ground buries pipe 1's delivery port 9 and small-size ground source heat pump unit's ground and buries the side water inlet and be connected, will the utility model discloses well return water 3's return water mouth 10 buries the side outlet with small-size heat pump unit's ground and is connected, accomplishes the utility model discloses with small-size ground source heat pump unit's linkage work.
The method comprises the following specific steps:
1. 1U-shaped buried pipe 1 made of PE material is placed into a buried drill hole;
2. the method comprises the following steps that a U-shaped buried pipe 1 with a water outlet 9 is made of PE materials, the water outlet 9 is in hot-melt connection with a buried side water inlet of the small ground source heat pump unit, and a water return port 10 is in hot-melt connection with a buried side water outlet of the small ground source heat pump unit;
3. placing the water storage tank 6 below a surface frozen soil layer;
4. the submerged pump 7 is arranged in the water storage tank 6, the inner container and the outer container of the water storage tank 6 are both made of plastics, the middle part is a foaming heat-insulating layer, and a water outlet pipe 8 made of PE material is connected with the submerged pump 7 through the side wall of the water storage tank 6;
5. connecting 1 water return pipe 3 made of PE material with a water storage tank cover 5 made of PE material, and connecting a water return port 10 at the other end with a water outlet at the buried side of the small ground source heat pump unit;
6. the highest position of the water return pipe 3 is provided with an exhaust valve 2;
7. connecting 1 exhaust pipe 4 made of PE material with a water storage tank cover 5 made of PE material;
8. a water storage tank cover 5 made of PE material is connected with a water storage tank 6.
When using the utility model discloses the time, at first bore hole and water storage slotted hole construction to ground. The drilling degree of depth should not be less than the utility model discloses 1 the biggest degree of depth 1 meters of U type buried pipe, the aperture should not be less than 1.5 times of burying 1 external diameter of U type buried pipe underground, with drilling under the U type buried pipe 1. The buried depth of the holes of the water storage tank 6 is not less than the sum of the height of the water storage tank 6 and the depth of the local frozen soil layer, the length and the width are not less than 1.5 times of the outer diameter of the water storage tank 6, and the water storage tank 6 is buried in the water storage tank holes. The submersible pump 7 is connected with the side part of the water storage tank 6 and the U-shaped buried pipe 1 through the water outlet pipe 8, the water outlet 9 is connected with a buried side water inlet of the small ground source heat pump unit, and the water return port 10 is connected with a buried side water outlet of the small ground source heat pump unit. The highest point of the water return pipe 3 is provided with an exhaust valve 2, an exhaust pipe 4 is connected with a water storage tank cover 5, and the water storage tank cover 5 is connected with the top of a water storage tank 6.
Before the device is used, the water storage tank 6 is filled with water as a heat transfer medium. When the small ground source heat pump unit starts to operate, the submersible pump 7 is started at the same time, the submersible pump 7 pumps low-temperature water from the water storage tank 6 to enter the U-shaped buried pipe 1, and the low-temperature water flows through the U-shaped buried pipe 1 to exchange heat with soil layers around the buried pipe, so that the water temperature is improved. After high-temperature water enters the small ground source heat pump unit for heat exchange, the formed low-temperature water flows back to the water storage tank 6 with the water storage tank cover 5 through the water return pipe 3, and underground temperature is extracted in a circulating reciprocating mode. When the small ground source heat pump unit stops operating, the submersible pump 7 stops working at the same time, the exhaust valve 2 is automatically opened, according to the pressure balance principle, a part of water in the buried side heat exchanger of the small ground source heat pump unit flows into the water storage tank 6 with the water storage tank cover 5 through the water return pipe 3, and the other part of water flows into the water storage tank 6 with the water storage tank cover 5 through the U-shaped buried pipe 1, the water outlet pipe 8 and the submersible pump. The water storage tank 6 with the water storage tank cover 5 is provided with heat preservation measures and is placed below the surface frozen soil layer, so that a good heat preservation effect is achieved, the water serving as a heat transfer medium can be effectively prevented from freezing due to too low temperature, and the purpose of preventing the freezing of the circulating water on the underground side is achieved. On the other hand, in the northern cold area, the small ground source heat pump unit is applied, when the system does not need to operate, in order to prevent the water in the buried pipe from freezing, a circulating pump is often required to be started, so that the aqueous medium in the buried pipe is circulated ceaselessly, a large amount of electric energy is consumed, the problem can be effectively solved by using the device, and the small ground source heat pump system is more energy-saving.
The utility model discloses a buried pipe freeze-proof device has solved the frozen problem of water of conventional small-size ground source heat pump set side as the circulating medium when the northern area is used. The device has the advantages of remarkable energy-saving effect, no environmental pollution, low construction cost and convenience in later maintenance, can be popularized in a large range in northern areas, can replace the use of an antifreezing medium, has good environmental benefit and social benefit, and has very good popularization value and application prospect.
Claims (5)
1. The utility model provides a buried pipe freeze-proof device for small-size ground source heat pump set which characterized in that: the water storage tank (6) is connected with the exhaust pipe (4) and the water return pipe (3) with the water return port (10) through a water storage tank cover (5) at the top, and a submersible pump (7) arranged in the water storage tank (6) is connected with the U-shaped buried pipe (1) with the water outlet port (9) through a water outlet pipe (8).
2. The buried pipe antifreeze apparatus of claim 1, wherein: the water return pipe (3) is connected with the exhaust valve (2).
3. A borehole freeze protection device according to claim 1 or 2, wherein: the inner container and the outer container of the water storage tank (6) are made of plastics, and the middle is made of foaming heat-insulating materials.
4. A borehole freeze protection device according to claim 1 or 2, wherein: the water storage tank cover (5) is made of plastics.
5. A borehole freeze protection device according to claim 3, wherein: the water storage tank cover (5) is made of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443122.9U CN211782064U (en) | 2019-12-19 | 2019-12-19 | Anti-freezing device for buried pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922443122.9U CN211782064U (en) | 2019-12-19 | 2019-12-19 | Anti-freezing device for buried pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211782064U true CN211782064U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922443122.9U Active CN211782064U (en) | 2019-12-19 | 2019-12-19 | Anti-freezing device for buried pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211782064U (en) |
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2019
- 2019-12-19 CN CN201922443122.9U patent/CN211782064U/en active Active
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