CN105352210A - Shallow geothermal energy device with pumping and recharging in same well - Google Patents
Shallow geothermal energy device with pumping and recharging in same well Download PDFInfo
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- CN105352210A CN105352210A CN201510763761.7A CN201510763761A CN105352210A CN 105352210 A CN105352210 A CN 105352210A CN 201510763761 A CN201510763761 A CN 201510763761A CN 105352210 A CN105352210 A CN 105352210A
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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
A shallow geothermal energy device with pumping and recharging in the same well comprises a water permeable pipe and an inner water pipe. A water outlet pipe is arranged in the inner water pipe. A water inlet of the water outlet pipe is connected with a submersible pump. A water returning pipe is arranged in an annular cavity supporting the water permeable pipe and the inner water pipe. A high-pressure pipe is arranged in the annular cavity supporting the water permeable pipe and the inner water pipe. The surface of the outer circle of the inner water pipe is fixedly provided with n sealing ring sets. Each sealing ring set comprises a sealing ring, an upper pressing plate and a lower pressing plate, and the upper pressing plate and the lower pressing plate are arranged on the upper side face and the lower side face of the sealing ring. Each sealing ring is a hollow elastic annular ring. The upper pressing plates and the lower pressing plates are all fixedly arranged on the periphery of the inner water pipe in a sleeving manner. The portion, stretching into the sealing rings, of the high-pressure pipe is provided with a high-pressure pipe outlet. According to the shallow geothermal energy device with pumping and recharging in the same well, the sealing rings on the inner water pipe and the inner pipe wall supporting the water permeable pipe form a plurality of isolation layers and independent and closed water returning spaces, and therefore the water returning pipe can be pressed into the different water returning spaces, and the purpose of a plurality of water returning paths is achieved.
Description
Technical field
The water supply well that the present invention relates to geothermal energy heat pump central air conditioner technical field recharges problem, and especially a kind of shallow layer geothermal energy is with well backflow device.
Background technology
Geothermal energy heat pump central air conditioner (also known as " water-source heat-pump central air conditioner "), it is the Transfer Medium that is geothermal energy with the underground water that temperature is constant all the year round, by source pump, improve or reduce water temperature and reach refrigeration, heat object, for building provides the central air-conditioning of cold and heat source.Because its Energy Efficiency Ratio is high, than other traditional form central air-conditioning energy 40 ~ 60%, energy conservation and consumption reduction effects significantly and is progressively subject to the favor of government, office, business unit, reaches the accreditation of most user simultaneously.At present, the return water mode having implemented to install water-source heat-pump central air conditioner all adopts " many wells recharge " mode.Namely draw water from a bite water supply well, after the cold in water or heat being taken away by the heat exchanger of heat pump main frame, water is discharged, recharge to the water supply well of more than two mouthfuls or two mouthfuls.This mode advantage is that Energy Efficiency Ratio is high, but the water that there is discharge all cannot recharge the problem to underground in time.First, because backwater naturally trickles without pressure in well head open type, not only back-flow velocity is slow, and easily causes backwater to pollute.And the water of underground cannot be got back in time, can overflow from well head or directly be disposed to ground by pipeline.Long-term discharge, not only causes the waste of water resource, level of ground water also may be caused to decline even exhausted, and then have influence on the safety of surrounding building; Secondly, the well number that needs are beaten is more, and the land area that need take is large, cannot use in the groups of building (thing) that floor space is less.The above-mentioned shortcoming of " many wells recharge " mode, the power savings advantages of water-source heat-pump central air conditioner is cancelled, be promote at water-source heat-pump central air conditioner, implementing a bottleneck problem in the process of energy-saving and cost-reducing, environmental protect, is also the behavior that national hydraulic department is strictly forbidden.
Due to its drawback large area manifest, be mainly manifested in the underground water of taking and can not accomplish that 100% all recharges to underground, then discharge earthward, cause that thermal source well silts up, water level decreasing.This mode is while " taking " geothermal energy, and also " uses " underground water, the water resource causing preciousness wastes greatly, makes water-source heat-pump central air conditioner because of anhydrous available and cause whole system to be paralysed simultaneously.Therefore.The shortcoming of " many wells recharge " mode becomes the bottleneck of water-source heat-pump central air conditioner popularization and development.
Summary of the invention
For solving the problems of the technologies described above, the invention discloses a kind of shallow layer geothermal energy with well backflow device.
technical scheme of the present invention is:
A kind of shallow layer geothermal energy is with well backflow device, comprise one to be sleeved on the support water-permeable pipe inside water supply well and to be located at the inner conduit supported in water-permeable pipe, outlet pipe is provided with in inner conduit, the water inlet of outlet pipe connects immersible pump, the delivery port of outlet pipe connects geothermal heat pump unit, support in the toroidal cavity of water-permeable pipe and inner conduit and be provided with return pipe, the water inlet of return pipe connects the delivery port of geothermal heat pump unit, it is characterized in that: support in the toroidal cavity of water-permeable pipe and inner conduit and be also provided with high-voltage tube, described inner conduit outer round surface is fixed with n sealing ring group, described each sealing ring group comprises sealing ring and is pressed on the upper of sealing ring, the top board of downside and lower platen, described sealing ring is the elastic ring circle of hollow, what top board and lower platen were all fixing is set on the excircle of inner conduit, the part that described high-voltage tube stretches into sealing ring is provided with high-voltage tube outlet, one end that high-voltage tube exposes earth's surface is provided with high-voltage tube control valve, n sealing ring group is mated pressing with the inner tubal wall supporting water-permeable pipe and is sealed and form n separation layer, each return pipe delivery port lays respectively in the backwater space on the upside of n separation layer, n >=1 and be integer.
Preferably, described high-voltage tube is seamless steel pipe, and sealing ring is filled with water under high pressure or hydraulic oil or compressed air by high-voltage tube in sealing ring.
Preferably, described high-voltage tube exit is equipped with magnetic valve.
Preferably, described sealing ring is that quality of rubber materials makes.
Preferably, each sealing ring group is by two sealing rings, a lower platen and two top board compositions, and described sealing ring and upper and lower pressing plate interval are arranged.
Preferably, what described lower platen was fixed is set on the excircle of inner conduit, and described top board clamps fixing being set on inner conduit.
Preferably, between described inner conduit and outlet pipe, be provided with heat preservation sandwich layer, perfusion heat-barrier material in heat preservation sandwich layer.
Preferably, described heat preservation sandwich layer is air heat-insulation layer.
Preferably, the quantity of described return pipe is n, and the delivery port of each return pipe lays respectively in the backwater space on the upside of n separation layer; Or the quantity of return pipe is not more than n, and same return pipe has delivery port at adjacent backwater spatial placement.
Preferably, described immersible pump is located in inner conduit, and immersible pump is located in the ground the upper water level of water.
the invention has the beneficial effects as follows:
1. the present invention utilizes the sealing ring on inner conduit and the inner tubal wall supporting water-permeable pipe to form the backwater space organizing separation layer and autonomous closure more, thus return pipe can be made to be pressed into respectively in different backwater spaces, reaches many backwater path objects.Make the water outlet, the backwater that realize equivalent in same well, and utilize soil to carry out the use of sufficient heat exchange Posterior circle.Because underground water is closed, recycled in overall process, any pollution can not be caused to underground water, really accomplish only " taking " geothermal energy and not " use " groundwater resources, made environmental protection, cycles, economized economy is achieved.
2. sealing ring and the hermetically-sealed construction supporting the inner tubal wall of water-permeable pipe and form, in the cavity of sealing ring, be filled with water under high pressure or hydraulic oil or compressed air by high-voltage tube outlet and increase pressure in cavity, thus increase the contact area of the inner tubal wall of sealing ring and support water-permeable pipe, after pressure reaches setting pressure, high-voltage tube control valve high-voltage tube being exposed earth's surface is closed, thus reach best obturation effect, top board can be arranged to removablely clamp form, mounting and adjusting is very convenient, result of use is good, is very beneficial to promotion and implementation.
3., in backwater and outlet pipe tube wall contact process, do not produce new heat exchange with the water outlet reaching initial leaving water temperature, thus can significantly improve water source heat pump units efficiency.
4. immersible pump is located in inner conduit, and immersible pump is located in the ground the upper water level of water, when immersible pump needs to change or keep in repair, immersible pump can be extracted when not extracting inner conduit, it is easier to make replacing or keep in repair immersible pump, immersible pump is located in the ground the upper water level of water, saves the length of water pipe.
5. reasonable in design of the present invention, guarantees that individual well can complete whole backwater task.By means of annular permeable layer and soil horizon, reduce water return flow speed, so that backwater is being summarized in underground water after fully carrying out heat exchange by the high backwater of temperature and stratum, finally reach the object of same well water resources circulation.Meanwhile, effectively can avoid the waste of water resource, avoid level of ground water to decline because of mobile even exhaustion, guarantee that subsurface structure is stablized and the safety of surrounding building.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of a kind of structure of the present invention;
Fig. 2 is using state figure of the present invention;
Fig. 3 is the cross-sectional view of the another kind of structure of the present invention;
Fig. 4 is the cross-sectional view of another structure of the present invention;
Fig. 5 is the cross-sectional view of another structure of the present invention;
In figure: 1. immersible pump, 2. outlet pipe, 3. return pipe, 31. return branch one, 32. return branch two, 33. return pipe delivery ports, 4. inner conduit, 5. support water-permeable pipe, 6. top board, 7. sealing ring, 71. cavitys, 8. lower platen, 9. high-voltage tube, 91. high-voltage tubes outlets, 92. high-voltage tube control valves, 10. permeable section, 11. annular permeable layers, 12. well lids, 13. soil horizons, A. underground water space, B1. backwater space one, B2. backwater space two.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: a kind of shallow layer geothermal energy is with well backflow device, see Fig. 1, comprise one to be sleeved on the support water-permeable pipe 5 inside water supply well and to be located at the inner conduit 4 supported in water-permeable pipe, support in the cavity of water-permeable pipe 5 and inner conduit 4 and be provided with return pipe 6(or return branch) and high-voltage tube 9, outlet pipe 2 is provided with in inner conduit 4, the water inlet of outlet pipe connects immersible pump 1, is provided with heat preservation sandwich layer between inner conduit 2 and outlet pipe 4.Return pipe 3 is for being connected with high pressure water recovery apparatus, and high-voltage tube 9 is for being connected with high pressure water replanishing device.
In order to reach good backwater effect, the backwater space of multiple sealing can be set, carry out backwater and heat exchange by multiple passage.
In the outside of inner conduit 4 self and lower distribution is fixed with one or more groups sealing ring 7.Often organize sealing ring to comprise an inside and be provided with the sealing ring 7 of the telescopic circulus of cavity and be arranged on top board 6 and the lower platen 8 of the upper and lower side of sealing ring 7, on the cylindrical being set in inner conduit 4 that lower platen 8 is fixing, top board 6 can fix or activity the cylindrical being set in inner conduit 4 on.Corresponding sealing ring 7 mates pressing respectively with the inner tubal wall of support water-permeable pipe 5 and is sealed and forms one or more separation layer, and on the upside of each separation layer, space is backwater space.
The present embodiment is applied to that geothermal energy heat pump central air conditioner goes out with well, in water recovery apparatus, see Fig. 2, install well lid 12, can arrange sealant, can bear high pressure pressure of return water in well around well lid 12 at the wellhead sealing of same water supply well.Well lid 12 runs through simultaneously and is provided with an outlet pipe 2, high-voltage tube 9 and two return branch 31 and 32.Outlet pipe 2 gos deep into being communicated with underground water in the underground water space A in shaft bottom, and the water inlet of outlet pipe 2 lower end is connected with immersible pump 1, forms high pressure and goes out water passage.Return pipe 3 is communicated with 32 with two return branch 31 simultaneously, and applies pressure in return pipe, forms high pressure backwater path.In water supply well, coupling is set with and supports water-permeable pipe 5, high-voltage tube 9 is to moisturizing in sealing ring 7, sealing ring 7 and the contact area supporting water-permeable pipe 5 inner tubal wall is increased by the hydraulic pressure constantly increased in cavity 71, after hydraulic pressure reaches setting pressure, high-voltage tube control valve high-voltage tube being exposed earth's surface is closed, thus reach best sealing effectiveness, also can be located at magnetic valve in high-voltage tube outlet, be convenient to the switch directly controlling high-voltage tube outlet.Described outlet pipe 2, high-voltage tube 9, return branch 31 and return branch 32, and inner conduit 4 is made up of multistage sealing docking respectively.
Support water-permeable pipe 5 and comprise permeable section 10 and supporting section, permeable section 10 and supporting section are alternately distributed.Between support water-permeable pipe 5 and the soil horizon of the water source borehole wall, be provided with annular permeable layer 11, this annular permeable layer 11 contacts with the soil horizon 13 of the water source borehole wall.The frame mode of annular permeable layer 11 is various, such as can see the integral annular seepage material of Fig. 2.Annular permeable layer 11 also can arrange inside and outside supporting network and fill seepage material in inside and outside supporting network interlayer.Annular permeable layer 11 also can be filled in the gravel material supported between water-permeable pipe 5 and soil horizon 13.The outside of described outlet pipe 2 is set with inner conduit 4, and outlet pipe 2 and inner conduit 4 matched in clearance, form the interlayer of air heat insulation, prevent high-temperature tempering and low temperature drinking-water pipe 2 from heat exchange occurring.
Backflow arm 1 stretches in the B1 of backwater space one, and backflow arm 2 32 stretches in the B2 of backwater space two.Backwater in each backwater space enters in annular permeable layer 11 or soil horizon 13 respectively by permeable section 10 of sidewall under pressure and Gravitative Loads, converges after sufficient heat exchange Yu with well underground water.
Embodiment 2: see Fig. 3, content is substantially the same manner as Example 1, unlike: often organize sealing ring by two sealing rings, a lower platen and two top board compositions, described sealing ring and upper and lower pressing plate interval are arranged.
Embodiment 3: accompanying drawing is not drawn, content is substantially the same manner as Example 1, unlike: the quantity of return pipe is one, and this return pipe is all provided with delivery port in each backwater space.
Embodiment 4: see accompanying drawing 4, content is substantially the same manner as Example 1, unlike: immersible pump is located at the lower end of inner conduit.
Embodiment 5: see accompanying drawing 5, content is substantially the same manner as Example 2, unlike: immersible pump is located at the lower end of inner conduit.
Claims (10)
1. a shallow layer geothermal energy is with well backflow device, comprise one to be sleeved on the support water-permeable pipe inside water supply well and to be located at the inner conduit supported in water-permeable pipe, outlet pipe is provided with in inner conduit, the water inlet of outlet pipe connects immersible pump, the delivery port of outlet pipe connects geothermal energy source pump, support in the toroidal cavity of water-permeable pipe and inner conduit and be provided with return pipe, the water inlet of return pipe connects the delivery port of geothermal energy source pump, it is characterized in that: support in the toroidal cavity of water-permeable pipe and inner conduit and be also provided with high-voltage tube, described inner conduit outer round surface is fixed with n sealing ring group, described each sealing ring group comprises sealing ring and is pressed on the upper of sealing ring, the top board of downside and lower platen, described sealing ring is the elastic ring circle of hollow, what top board and lower platen were all fixing is set on the excircle of inner conduit, the part that described high-voltage tube stretches into sealing ring is provided with high-voltage tube outlet, one end that high-voltage tube exposes earth's surface is provided with high-voltage tube control valve, n sealing ring group is mated pressing with the inner tubal wall supporting water-permeable pipe and is sealed and form n separation layer, each return pipe delivery port lays respectively in the backwater space on the upside of n separation layer, n >=1 and be integer.
2. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: described high-voltage tube is seamless steel pipe, and sealing ring is filled with water under high pressure or compressed air by high-voltage tube in sealing ring.
3. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: described high-voltage tube exit is equipped with magnetic valve.
4. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: described sealing ring is that quality of rubber materials makes.
5. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: each sealing ring group is by two sealing rings, a lower platen and two top board compositions, and described sealing ring and upper and lower pressing plate interval are arranged.
6. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: what described lower platen was fixed is set on the excircle of inner conduit, and described top board clamps fixing being set on inner conduit.
7. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: be provided with heat preservation sandwich layer between described inner conduit and outlet pipe, perfusion heat-barrier material in heat preservation sandwich layer.
8. shallow layer geothermal energy according to claim 7 is with well backflow device, it is characterized in that: described heat preservation sandwich layer is air heat-insulation layer.
9. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: the quantity of described return pipe is n, and the delivery port of each return pipe lays respectively in the backwater space on the upside of n separation layer; Or the quantity of return pipe is not more than n, and same return pipe has delivery port at adjacent backwater spatial placement.
10. shallow layer geothermal energy according to claim 1 is with well backflow device, it is characterized in that: described immersible pump is located in inner conduit, and immersible pump is located in the ground the upper water level of water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510763761.7A CN105352210A (en) | 2015-11-11 | 2015-11-11 | Shallow geothermal energy device with pumping and recharging in same well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510763761.7A CN105352210A (en) | 2015-11-11 | 2015-11-11 | Shallow geothermal energy device with pumping and recharging in same well |
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| CN105352210A true CN105352210A (en) | 2016-02-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905759A (en) * | 2017-11-18 | 2018-04-13 | 滨州市甲力太阳能科技有限公司 | Thermal-insulating sealing module occluder |
| CN107965946A (en) * | 2017-12-16 | 2018-04-27 | 郑州驰骋信息技术有限公司 | A kind of adjustable earth source heat pump underground heat-exchange system of individual well |
| CN108412462A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(北京) | A method of it can with well recharge exploitation of geothermal |
| CN108507145A (en) * | 2018-05-29 | 2018-09-07 | 广东盛迎低碳技术研究有限公司 | A kind of hermetic seal individual well energy storage central air-conditioning heat-exchange system |
| CN112856839A (en) * | 2021-03-29 | 2021-05-28 | 青海九零六工程勘察设计院 | Geothermal mining and irrigating equipment special for geothermal energy |
| CN113340010A (en) * | 2021-06-08 | 2021-09-03 | 合肥工业大学 | Vacuum and pressure composite type groundwater source heat pump recharging device |
| CN113531929A (en) * | 2021-07-29 | 2021-10-22 | 青海省环境地质勘查局 | Geothermal single-well pressurizing and recharging device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905759A (en) * | 2017-11-18 | 2018-04-13 | 滨州市甲力太阳能科技有限公司 | Thermal-insulating sealing module occluder |
| CN107965946A (en) * | 2017-12-16 | 2018-04-27 | 郑州驰骋信息技术有限公司 | A kind of adjustable earth source heat pump underground heat-exchange system of individual well |
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| CN108507145A (en) * | 2018-05-29 | 2018-09-07 | 广东盛迎低碳技术研究有限公司 | A kind of hermetic seal individual well energy storage central air-conditioning heat-exchange system |
| CN112856839A (en) * | 2021-03-29 | 2021-05-28 | 青海九零六工程勘察设计院 | Geothermal mining and irrigating equipment special for geothermal energy |
| CN113340010A (en) * | 2021-06-08 | 2021-09-03 | 合肥工业大学 | Vacuum and pressure composite type groundwater source heat pump recharging device |
| CN113340010B (en) * | 2021-06-08 | 2022-02-11 | 合肥工业大学 | Vacuum and pressure composite type groundwater source heat pump recharging device |
| CN113531929A (en) * | 2021-07-29 | 2021-10-22 | 青海省环境地质勘查局 | Geothermal single-well pressurizing and recharging device and method |
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Application publication date: 20160224 |