CN201866970U - Same-floor geothermal energy cyclic utilization system - Google Patents

Same-floor geothermal energy cyclic utilization system Download PDF

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Publication number
CN201866970U
CN201866970U CN2010205686433U CN201020568643U CN201866970U CN 201866970 U CN201866970 U CN 201866970U CN 2010205686433 U CN2010205686433 U CN 2010205686433U CN 201020568643 U CN201020568643 U CN 201020568643U CN 201866970 U CN201866970 U CN 201866970U
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China
Prior art keywords
well
water
heat exchanger
communicated
pumped
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CN2010205686433U
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Chinese (zh)
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刘汉风
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刘汉风
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Priority to CN2010205686433U priority Critical patent/CN201866970U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Abstract

The utility model discloses a same-floor geothermal energy cyclic utilization system, which comprises a pumping well, a recharge well, a siphon, a water conduit, and the like, wherein the wellheads of both the pumping well and the recharge well are arranged in a sealed way, and a tube side outlet of an aboveground heat exchanger is communicated above the static liquid level of the recharge well through a return pipe; the two ends of the siphon penetrate the pumping well and the recharge well in a sealed way respectively, and are communicated below the dynamic liquid level of the well respectively; when in operation, heat exchange is conducted between the geothermal water and the cold liquid in the tube side and shell side of the aboveground heat exchanger, and the mixed water returns to the recharge well through the return pipe after the temperature is reduced; and as both the pumping well and the recharge well are both sealed, when the well liquid level is lowered, the water in the recharge well is pumped to the pumping well through the siphon after the hydraulic pressure of the recharge well is higher than the hydraulic pressure in the pumping well, and at the same time, as soon as the liquid level of the recharge well is lowered, and the inner cavity of the air section of the recharge well is in negative pressure, the geothermal water in the tub side of the aboveground heat exchanger can be automatically guided into the recharge well through the return pipe under the action of the negative pressure. The same-floor geothermal energy cyclic utilization system has low energy consumption and simple structure, and is highly safe and easy to realize.

Description

With layer underground heat cyclic utilization system
Technical field
It is recycling that the utility model relates to underground heat, particularly a kind of with layer underground heat cyclic utilization system.
Background technology
Geothermal energy resources are as the reproducible energy, though the status in whole energy resource structure is very little at present, but compare with solar energy, wind energy and tide energy etc., grade but is the highest, it is the most real feasible thermal source, if reasonably develop, will become a kind of inexhaustible, nexhaustible clean energy resource.Geothermal utilization approach and utilization ratio are the research emphasis of present energy field.
The hot spring bathing is the most original geothermal utilization mode, existing thousands of years history.Along with scientific and technological progress, the appearance of technology such as heat pump makes geothermal energy embody value in more wide field.For example utilize the heat-pump hot-water technology of geothermal energy resources to use in the family, floor heating, the supply of integral body hot water, the comprehensive installing just of summer air-conditioning utilization charging uses and the operation cost of use wants much energy-conservation than alternate manner, and next utilizes the high-temperature geothermal fluid power-generation to also become new trial.
Geothermal source mainly has several big characteristics: 1, water-mineralizing degree height, and strong to winning apparatus and corrosion of pipe, the not treated environment of hypergene attitude over the ground that just discharges of tail water does great damage; 2, large scale mining and the utilization to GEOTHERMAL WATER can cause shallow table body of groundwater water level to descend, and can not fill up the disappearance of this respect fully from replenishing of Atmospheric precipitation, local hot water by excessive exploitation after, produce the water body vacancy that reaches in the rock stratum under the rock stratum inevitably, cause the stability of the earth to be damaged.Especially containing at some has the coastal area of thermal resource in large quantities, and because of the huge thick unconsolidated formations of underground many depositions, its particle is thinner, and complex structure easilier brings out destruction such as surface subsidence because of geothermal water exploitation.
Comparatively effective and efficient manner is, to utilize underground heat tail water later to recharge, existing mode comprises a, the different layer of individual well recharges: be about to after the GEOTHERMAL WATER utilization in certain stratum from recharging in the same well to another stratum, this method major defect is: recharge water does not fully carry out exchange heat with shallow table soil, temperature does not return to initial temperature as yet, just drawn back, soil heat effect is utilized low, secondly, in same well, draw water simultaneously and recharge, the pump-out and the amount of recharging all reduce, and the ground heating effect is subject to considerable influence, once more, different layer recharges, must must ensure the water intaking layer and recharge water layer water quality to be similar to, otherwise, easily pollute recharging water layer, simultaneously, water intaking layer can't return because of tail water, the silt particle of taking out of during water intaking, clay can't be got back to the water intaking layer, causes this layer geologic structure to change year in year out; The different layer of b, different well recharges, and different well recycling mode has prolonged the flow process of tail water, is convenient to it with rock-soil layer carries out sufficient heat exchange, but equally easily causes the problem of water pollution and geologic structure variation; C, different well recharge with layer, and it is the wider mode that adopts at present that different well recharges with layer, have overcome many defectives of preceding dual mode.
But in the practical operation, the pressure reduction deficiency because of between recovery well and the inverted well liquid level usually runs into the situation that the amount of recharging significantly is lower than yield, must must pressurize and recharge, and strengthens and recharges dynamics, could ensure basic demand.It is big that energy consumption is recharged in pressurization, the security performance of system required high, and misoperation promptly can produce certain potential safety hazard.
Need overcome described defective, a kind of underground heat cyclic utilization system is provided, adopt different well to carry out geothermal utilization with a layer mode of recharging, need not pressurization when tail water recharges can satisfy the demands, and the recharge rate height recharges effectively, and energy consumption is low, system's security of operation.
Summary of the invention
In view of this, the purpose of this utility model provides a kind of with layer underground heat cyclic utilization system, adopts different well to carry out geothermal utilization with the mode that layer recharges, need not pressurization when tail water recharges, can satisfy the demands the recharge rate height, recharge effectively, energy consumption is low, system's security of operation.
Of the present utility model with layer underground heat cyclic utilization system, comprise pumped well, inverted well, ground heat exchanger, cold fluid transfer pipeline and heating pipe network, the pumped well bottom is communicated in layer underground heat water layer with the inverted well bottom, the pumped well bottom is provided with immersible pump, the delivery port of immersible pump is communicated with inverted well by the tube side of ground heat exchanger, the cold fluid transfer pipeline is communicated with the heating pipe network by the shell side of ground heat exchanger, on this basis, the utility model structure also comprises siphon pipe, aqueduct and return pipe, and pumped well well head and inverted well well head all seal setting; Aqueduct hermetically passing pumped well, the delivery port of immersible pump is communicated with the tube side inlet of ground heat exchanger by aqueduct, return pipe hermetically passing back water well, the tube side of heat exchanger outlet on the ground is communicated in inverted well hydrostatic level liquid level top by return pipe;
Siphon pipe one end hermetically passing pumped well is communicated in pumped well dynamic water level liquid level below, and other end hermetically passing back water well is communicated in back water well dynamic water level liquid level below;
GEOTHERMAL WATER flow line upper edge GEOTHERMAL WATER flow direction is provided with check valve.
Further, inverted well is at least two mouthfuls and circumferentially distribute along pumped well, on the ground heat exchanger is at least two covers and series connection successively, the delivery port of immersible pump by aqueduct and first cover on the ground the tube side inlet of heat exchanger is communicated with, the tube side that tail overlaps the ground heat exchanger exports and is communicated with the return pipe of each inverted well;
Further, on the aqueduct pipeline desander is set;
Further, pumped well sidewall and inverted well sidewall all are provided with the infiltration hole of running through well inwall and well outer wall below being positioned at each automatic water level liquid level;
Further, pumped well well head and inverted well well head are provided with by sealing gland sealing respectively, and aqueduct passes the sealing gland of pumped well well head along the pumped well longitudinal sealing, and return pipe passes the sealing gland of inverted well well head along the inverted well longitudinal sealing.
The beneficial effects of the utility model: the same layer underground heat cyclic utilization system of the utility model structure comprises siphon pipe, aqueduct and return pipe, and pumped well well head and inverted well well head all seal setting; The delivery port of immersible pump is communicated with the tube side inlet of ground heat exchanger by aqueduct, and the tube side of heat exchanger outlet on the ground is communicated in inverted well hydrostatic level liquid level top by return pipe; Siphon pipe one end hermetically passing pumped well is communicated in pumped well dynamic water level liquid level below, and other end hermetically passing back water well is communicated in back water well dynamic water level liquid level below; During immersible pump work, GEOTHERMAL WATER flow in the tube side of heat exchanger on the ground and with shell side in the cold fluid heat exchange, be transported to the heating pipe network after cold fluid heats up for user's heating, the GEOTHERMAL WATER (being tail water) of cooling is then got back in the inverted well by return pipe, is being heated once more in the thermosphere in the same manner; Because of pumped well and back water well all seal setting, one section air has been sealed in the two hydrostatic level liquid level top, after siphon pipe is set, immersible pump draws water, the pumped well liquid level reduces, inverted well hydraulic pressure is higher than hydraulic pressure in the pumped well, GEOTHERMAL WATER in the inverted well is pumped to pumped well by siphon pipe, meanwhile, the liquid level of inverted well descends, and the air section inner chamber of inverted well is the negative pressure attitude, GEOTHERMAL WATER in the heat exchanger tube side can import in the inverted well through return pipe under suction function automatically on the ground, GEOTHERMAL WATER flow line upper edge GEOTHERMAL WATER flow direction is provided with check valve, prevents that fluid from flowing backwards, and reduces operation risk; Based on this, the problem that the utility model must pressurize and recharge when efficiently solving traditional geothermal water reinjection is not having to have realized effectively recharging of tail water under the situation of pressue device, and the simultaneity factor energy consumption reduces, and processing safety improves.
Whole system is simple in structure, is easy to realize bright prospects and significance aspect the development and use of underground heat.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A portion enlarged drawing of Fig. 1.
The specific embodiment
Fig. 1 is a structural representation of the present utility model; Fig. 2 is the A portion enlarged drawing of Fig. 1.
As shown in the figure:
The same layer underground heat cyclic utilization system of present embodiment, comprise pumped well 1, inverted well 2, ground heat exchanger 3, cold fluid transfer pipeline 4, heating pipe network 12, siphon pipe 8, aqueduct 6 and return pipe 7, the pumped well bottom is communicated in layer underground heat water layer 13 with the inverted well bottom, the pumped well bottom is provided with immersible pump 5, the delivery port of immersible pump 5 is communicated with inverted well 2 by the tube side of ground heat exchanger, cold fluid transfer pipeline 4 is communicated with the heating pipe network by the shell side of ground heat exchanger, and pumped well well head and inverted well well head all seal setting; Aqueduct 6 hermetically passing pumped wells, the delivery port of immersible pump 5 is communicated with the tube side inlet of ground heat exchanger 3 by aqueduct 6, return pipe 7 hermetically passing back water wells, the tube side of heat exchanger 3 outlet on the ground is communicated in inverted well hydrostatic level liquid level top by return pipe 7; Siphon pipe 8 one end hermetically passing pumped wells are communicated in pumped well dynamic water level liquid level below, and other end hermetically passing back water well is communicated in back water well dynamic water level liquid level below; GEOTHERMAL WATER flow line upper edge GEOTHERMAL WATER flow direction is provided with check valve 9.
During immersible pump 5 work, GEOTHERMAL WATER is in aqueduct 6 flow to the tube side of ground heat exchanger 3, and with heat exchanger 3 shell sides on the ground of flowing through in the cold fluid heat exchange, after heating up, the cold fluid heat absorption is transported to the heating pipe network for user's heating, the GEOTHERMAL WATER (being tail water) of cooling is then got back in the inverted well by return pipe, is being heated once more in the thermosphere in the same manner; Because of being set, siphon pipe and pumped well and inverted well be sealing state, when immersible pump draws water, the pumped well liquid level reduces, hydraulic pressure is higher than hydraulic pressure in the pumped well in the inverted well, siphon pipe is pumped the interior GEOTHERMAL WATER of inverted well to pumped well, meanwhile, the liquid level of inverted well descends, the air section inner chamber of inverted well is the negative pressure attitude, GEOTHERMAL WATER in the heat exchanger tube side can import in the inverted well through return pipe under suction function automatically on the ground, GEOTHERMAL WATER flow line upper edge GEOTHERMAL WATER flow direction is provided with check valve 9, and in the present embodiment, check valve 9 can prevent that the fluid in the inverted well from flowing backwards, ensure the stable of its negative pressure attitude, in this scheme, pumped well does not limit to its quantity, one or morely all can.Wherein, heat exchanger can one or more sets on the ground, if overlap heat exchanger, overlap can be in parallel between the heat exchanger more, also can connect, and also can connect with all the other heat exchangers after a part of heat exchanger in parallel again more.
Preferred version as such scheme, inverted well 2 is at least two mouthfuls and circumferentially distribute along pumped well, the specific embodiment is that inverted well is two mouthfuls (only illustrate among the figure wherein flatly), and under pumped well drew water the certain situation of power, inverted well quantity increases can effectively improve the tail water recharge rate; Heat exchanger is at least two covers and series connection successively on the ground, the specific embodiment is two covers, the delivery port of immersible pump is communicated with by the tube side inlet of aqueduct with first cover ground heat exchanger, the tail cover tube side outlet of heat exchanger on the ground is communicated with the return pipe of each inverted well by water knockout drum 19, heat exchanger series connection makes the cold fluid can the more abundant heat that must absorb GEOTHERMAL WATER, improves system's heat exchanger efficiency.
On the basis of aforementioned structure, present embodiment further is provided with desander 11 on the aqueduct pipeline, and the earth that making draws water takes out of, sandstone obtain filtering, and reduce the risk of pipeline blockage, improve service life of equipment.
On the basis of aforementioned structure, present embodiment further is positioned at its dynamic water level liquid level below in the pumped well sidewall pumped well infiltration hole 111 of running through pumped well inwall and outer wall is set, the inverted well sidewall is positioned at its dynamic water level liquid level below the inverted well infiltration hole 112 of running through inverted well inwall and outer wall is set, and the infiltration of being convenient in the soil flows in the well.
On the basis of aforementioned structure, present embodiment further seals pumped well well head and inverted well well head by the sealing gland structure, aqueduct passes the sealing gland of pumped well well head along the pumped well longitudinal sealing, return pipe passes the sealing gland of inverted well well head along the inverted well longitudinal sealing, as shown in the figure, sealing gland comprises shut-in well flange well lid 18, shut-in well flange well lid 18 fixedly installs by pre-embedded anchoring bolts 14 and ground, be placed in the flexible pipe 16 in the lower end of shut-in well flange well lid 18 and well casing 15 upper ends are common, flexible pipe 16 cylindricals get final product by two clamp bandings, when aqueduct 6 passes sealing gland with return pipe 7, all can realize running through the sealing at position by ring structure, this is a prior art, seldom does elaboration at this.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (5)

1. one kind with a layer underground heat cyclic utilization system, comprise pumped well (1), inverted well (2), ground heat exchanger (3), cold fluid transfer pipeline (4) and heating pipe network, the pumped well bottom is communicated in layer underground heat water layer with the inverted well bottom, the pumped well bottom is provided with immersible pump (5), the delivery port of immersible pump (5) is communicated with inverted well (2) by the tube side of ground heat exchanger, cold fluid transfer pipeline (4) is communicated with the heating pipe network by the shell side of ground heat exchanger, and it is characterized in that: pumped well well head and inverted well well head all seal setting;
Also comprise siphon pipe (8), aqueduct (6) and return pipe (7);
Aqueduct (6) hermetically passing pumped well, the delivery port of immersible pump (5) is communicated with the tube side inlet of ground heat exchanger (3) by aqueduct (6), return pipe (7) hermetically passing back water well, the tube side of heat exchanger (3) outlet on the ground is communicated in inverted well hydrostatic level liquid level top by return pipe (7);
Siphon pipe (8) one end hermetically passing pumped wells are communicated in pumped well dynamic water level liquid level below, and other end hermetically passing back water well is communicated in back water well dynamic water level liquid level below;
GEOTHERMAL WATER flow line upper edge GEOTHERMAL WATER flow direction is provided with check valve (9).
2. according to claim 1 with layer underground heat cyclic utilization system, it is characterized in that: inverted well (2) is at least two mouthfuls and circumferentially distribute along pumped well, heat exchanger is at least two covers and series connection successively on the ground, the delivery port of immersible pump (5) is communicated with by the tube side inlet of aqueduct (6) with first cover ground heat exchanger, and the tail cover tube side outlet of heat exchanger on the ground is communicated with the return pipe of each inverted well.
3. according to claim 1 and 2 with layer underground heat cyclic utilization system, it is characterized in that: desander (10) is set on the aqueduct pipeline.
4. according to claim 3 with layer underground heat cyclic utilization system, it is characterized in that: pumped well sidewall and inverted well sidewall are positioned at each automatic water level liquid level below the infiltration hole of running through well inwall and well outer wall all are set.
5. according to claim 4 with layer underground heat cyclic utilization system, it is characterized in that: pumped well well head and inverted well well head are provided with by the sealing gland sealing respectively, aqueduct (6) passes the sealing gland of pumped well well head along the pumped well longitudinal sealing, and return pipe (7) passes the sealing gland of inverted well well head along the inverted well longitudinal sealing.
CN2010205686433U 2010-10-20 2010-10-20 Same-floor geothermal energy cyclic utilization system CN201866970U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679430A (en) * 2012-05-24 2012-09-19 天津格瑞供热有限责任公司 Geothermal heating system
CN103017388A (en) * 2012-12-19 2013-04-03 刘焓 Deep geothermal energy utilization device
CN105698419A (en) * 2016-03-10 2016-06-22 黑龙江省九0四环境工程勘察设计院 Geothermal energy exploitation device in cold regions
CN105698418A (en) * 2016-03-10 2016-06-22 黑龙江省九0四环境工程勘察设计院 Longhole heat exchanger for geothermal well
CN109595835A (en) * 2018-12-01 2019-04-09 湖南达道新能源开发有限公司 A kind of wellhead assembly for geothermal energy resources
CN110206525A (en) * 2019-04-30 2019-09-06 韩金井 A kind of heating heated well superstructure
CN110206506A (en) * 2019-06-10 2019-09-06 湖南达道新能源开发有限公司 A kind of geothermal drilling well head cover board
CN110243087A (en) * 2019-05-10 2019-09-17 湖南达道新能源开发有限公司 A kind of geothermal energy heat-exchanger rig
CN110603414A (en) * 2017-03-31 2019-12-20 三菱重工制冷空调系统株式会社 Geothermal utilization system and geothermal utilization method
CN111750554A (en) * 2020-05-29 2020-10-09 万江新能源集团有限公司 Deep heat exchange system of geothermal recharge well

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679430A (en) * 2012-05-24 2012-09-19 天津格瑞供热有限责任公司 Geothermal heating system
CN103017388A (en) * 2012-12-19 2013-04-03 刘焓 Deep geothermal energy utilization device
CN105698419A (en) * 2016-03-10 2016-06-22 黑龙江省九0四环境工程勘察设计院 Geothermal energy exploitation device in cold regions
CN105698418A (en) * 2016-03-10 2016-06-22 黑龙江省九0四环境工程勘察设计院 Longhole heat exchanger for geothermal well
CN110603414B (en) * 2017-03-31 2021-04-06 三菱重工制冷空调系统株式会社 Geothermal utilization system and geothermal utilization method
CN110603414A (en) * 2017-03-31 2019-12-20 三菱重工制冷空调系统株式会社 Geothermal utilization system and geothermal utilization method
CN109595835A (en) * 2018-12-01 2019-04-09 湖南达道新能源开发有限公司 A kind of wellhead assembly for geothermal energy resources
CN110206525A (en) * 2019-04-30 2019-09-06 韩金井 A kind of heating heated well superstructure
CN110243087A (en) * 2019-05-10 2019-09-17 湖南达道新能源开发有限公司 A kind of geothermal energy heat-exchanger rig
CN110206506A (en) * 2019-06-10 2019-09-06 湖南达道新能源开发有限公司 A kind of geothermal drilling well head cover board
CN111750554A (en) * 2020-05-29 2020-10-09 万江新能源集团有限公司 Deep heat exchange system of geothermal recharge well

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Granted publication date: 20110615

Termination date: 20121020