CN103940151A - Combined type ground source heat pump system and method for solving recharging of water source heat pump - Google Patents
Combined type ground source heat pump system and method for solving recharging of water source heat pump Download PDFInfo
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Abstract
The invention relates to the technical field of heating ventilation air conditioning industry ground source heat pumps and domestic hot water supplying, in particular to a combined type ground source heat pump system and a method for solving recharging of a water source heat pump. The combined type ground source heat pump system comprises a surface covering layer (1), a water bearing bed (2), a competent bed rock (3), a clay ball refilling layer (4), a gravel padding layer (5), a cement grouting layer (6), an upper casing pipe layer (7), a filtering pipe (8), a steel casing pipe (9), an open hole side wall (10), an immersible pump (11), a plate heat exchanger (12), a secondary side circulation pump (13), a ground source heat pump unit (14), a user side circulation pump (15), a user tail end (16), a diversion valve (17), a common inverted well (18) and a related pipeline. The combined type ground source heat pump system has the advantages that the water source heat pump recharging is thoroughly solved, and the single well circulation system thermal breakthrough is achieved. The heat exchanging efficiency is high, the occupied space is small, the construction period is short, the adaptability is high, the system cost is low, and the service life is long.
Description
Technical field
The present invention relates to HVAC industry earth source heat pump field and domestic hot-water supply technical field, a kind of method that combined-type ground source heat pump and solution water resource heat pump recharge specifically.
Background technology
In recent years, environmental problem was increasingly serious, the energy-conservation trend that become, and environmental protection has become irresistible trend.In building energy saving field, earth source heat pump, as the central air conditioner system of a kind of energy-saving and environmental protection, green, is more and more subject to people's attention.Yet, as everyone knows, it is domestic that at present main what adopt is perpendicularly buried pipe formula earth-source hot-pump system (GCHP) and water source heat pump system (GWHP), perpendicularly buried pipe system because of its initial cost higher, restricted further propagation and employment, to recharge difficulty large because of it for water source heat pump system, and geologic structure is had potential impact and develops limited.
Abroad, in knob, the region of subterranean strata densification adopts a kind of individual well circulatory system (SCW), and heat exchange efficiency is high, and boring number is few, has unique advantage.Yet, this system also has two aspect limitations, one use region is limited, and seriously (only suitable is competent bed in perforate, as being the area of competent bed under the areas such as granite, quartzy sandstone and cover layer not thick (in 30m) and cover layer), two there is the non-existent problem of perpendicularly buried pipe earth-source hot-pump system in it---and heat connects.
Summary of the invention
The object of the invention is to develop a kind of solution water resource heat pump and recharge, the method that the combined-type ground source heat pump that cost is low, the life-span is long, heat exchange efficiency is high and solution water resource heat pump recharge.
A kind of combined-type ground source heat pump provided by the invention, comprising: Surface mulch layer 1, water-bearing layer 2, competent bed basement rock 3, clay ball backfilling layer 4, gravel filling layer 5, cement injection layer 6, upper strata sleeve pipe 7, screen pipe 8, steel sleeve pipe 9, open hole sidewall 10, immersible pump 11, plate type heat exchanger 12, secondary side circulating pump 13, earth source heat pump unit 14, user's side circulating pump 15, user's end 16, by-pass valve 17, conventional inverted well 18 and associated conduit; In the space of Surface mulch layer 1, water-bearing layer 2, competent bed basement rock 3 interior 2-3m, described steel sleeve pipe 9, screen pipe 8, upper strata sleeve pipe 7 are upwards set successively, described upper strata sleeve pipe 7 and screen pipe 8 and steel sleeve pipe 9 are by screwed connection, in steel sleeve pipe 9 and competent bed basement rock 3 gaps, be provided with the cement injection layer 6 of 2-3m, cement injection layer 6 water-bearing layer, top is provided with gravel filling layer 5 in 2 gaps, in gravel filling layer 5 Surface mulch layer 1 gap, top, be provided with clay ball backfilling layer 4, until earth's surface;
Described open hole sidewall (10) is the cylindric type borehole wall that rig forms in competent bed basement rock (3) internal drilling, open hole sidewall (10) is positioned at below steel sleeve pipe (9), upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9), open hole sidewall (10) form a T-shape container successively downwards, described immersible pump (11) is arranged on T-shape container bottom, described conventional inverted well (18) is arranged in the space of Surface mulch layer (1), water-bearing layer (2), on competent bed basement rock (3); Described immersible pump (11) is connected with plate type heat exchanger (12) primary side water inlet end by pipeline, the backwater end of plate type heat exchanger (12) connects a threeway by water return pipeline, threeway one end is placed in T-shape container top, the threeway other end is connected with by-pass valve (17) one end, and by-pass valve (17) other end is connected to conventional inverted well (18) by pipeline; The secondary side of plate type heat exchanger (12) forms closed circuit after being connected by pipeline with the ground source of secondary side circulating pump (13), earth source heat pump unit (14) successively, and the load-side of described earth source heat pump unit (14) forms closed circuit after being connected by pipeline with described user's side circulating pump (15), user's end (16) successively.
Described water-bearing layer 2 thickness are no more than 50m, and described competent bed basement rock 3 deeply distance is 100m～500m.
The particle diameter of described clay ball backfilling layer 4 medium clay soil ball is 4-5cm, and clay ball backfilling layer 4 bed thickness are Surface mulch layer 1 thickness, and described gravel filling layer 5 adopts the gravel of diameter 5-10 mm to fill, and gravel filling layer 5 filling thickness are water-bearing layer 2 bed thickness; The filling thickness of described cement injection layer 6 is 2-3m.
Described upper strata sleeve pipe 7, screen pipe 8, steel sleeve pipe 9 calibers are 325mm.
Described immersible pump 11 is 5m with the distance of T-shape container bottom.
The aperture of described by-pass valve 17 is 0-limit aperture, and limit aperture is the aperture of the amount of recharging of conventional inverted well 18 by-pass valve 17 correspondences while reaching capacity.
Described conventional inverted well 18 is 30-60m with the horizontal range of described T-shape heat exchanger.
Described T-shape container can be arranged in parallel a plurality of, and T-shape container upper diameter is 325mm, is highly no more than 50m, and T-shape container lower diameter is 200mm, is highly 100-500m.
The present invention also provides a kind of method that water resource heat pump recharges that solves, and comprises the following steps:
A, employing water drilling rig pore-forming, aperture is 550～600mm, first rig penetrates Surface mulch layer 1, enter into afterwards water-bearing layer 2, expose behind water-bearing layer 2, rig enters competent bed basement rock 3, and entering competent bed basement rock 3 degree of depth is after 2～3m, to stop to bore, in boring, upwards set gradually steel sleeve pipe 9, screen pipe 8 and upper strata sleeve pipe 7, upper strata sleeve pipe 7 and screen pipe 8 and steel sleeve pipe 9 are by screwed connection;
B, the gap injected water mud in boring with steel sleeve pipe 9, inject the degree of depth 2～3m, solidifies rear formation cement injection layer 6;
C, after cement injection layer 6 solidifies, on cement injection layer 6 top, gravel fillings are installed, gravel filling finishes during 2 top 2-3m to water-bearing layer, forms gravel filling layer 5, clay ball backfilling layer 4 is installed above gravel filling layer 5, till earth's surface;
D, after completing above operation, again set up rig, in the middle of upper strata sleeve pipe 7, screen pipe 8 and steel sleeve pipe 9, continue boring downwards, boring aperture is 200mm, boring is goed deep into competent bed basement rock (3) distance for 100-500m, the T-shape container being comprised of upper strata sleeve pipe 7, screen pipe 8, steel sleeve pipe 9 and bottom open hole sidewall 10 of rear formation of having holed.Setting up rig apart from the place of T-shape container 30-60m, penetrate Surface mulch layer 1, enter into afterwards water-bearing layer 2 and drill through the conventional inverted well 18 of a bite;
E, to T-shape container, inject clear water, form a T-shape heat exchanger, at T-shape heat exchanger bottom installing submersible pump 11, by pipeline, immersible pump 11 is connected to the primary side of plate type heat exchanger 12, the secondary side of plate type heat exchanger 12 successively with secondary side circulating pump 13, after connecting, the ground source of earth source heat pump unit 14 forms closed circuit, the load-side of described earth source heat pump unit 14 successively with described user's side circulating pump 15, after connecting, user's end 16 forms closed circuit, on water return pipeline after plate type heat exchanger 12 heat exchange, threeway is set, threeway one end is connected to T-shape heat exchanger top, the threeway other end is installed by-pass valve 17, by-pass valve 17 is connected with conventional inverted well 18 by pipeline.
Described T-shape heat exchanger can be arranged in parallel a plurality of.
The method that a kind of combined-type ground source heat pump provided by the invention and solution water resource heat pump recharge, its advantage is:
1, thoroughly solved water resource heat pump and recharged problem, can accomplish that 100% recharges.
2, solved the problem that individual well circulatory system heat connects.
3, heat exchange efficiency is high, and pipe-buried type ground source heat pump efficiency height improves greatly more routinely, and the heat that T-shape heat exchanger can provide can reach 1500kW.
4, floor space is little, the construction period is short, applicability is strong.
5, system cost is low, the life-span is long, and the life-span can reach the more than 10 times of conventional water resource heat pump well life-span.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of combined-type ground source heat pump of the present invention.
The specific embodiment
As shown in Figure 1, a combined-type ground source heat pump, comprising: Surface mulch layer 1, water-bearing layer 2, competent bed 3, clay ball backfilling layer 4, gravel filling layer 5, cement injection layer 6, upper strata sleeve pipe 7, screen pipe 8, steel sleeve pipe 9, open hole sidewall 10, immersible pump 11, plate type heat exchanger 12, secondary side circulating pump 13, earth source heat pump unit 14, user's side circulating pump 15, user's end 16, by-pass valve 17, conventional inverted well 18 and associated conduit; In the space of Surface mulch layer 1, water-bearing layer 2, competent bed basement rock 3 interior 2-3m, steel sleeve pipe 9, screen pipe 8, upper strata sleeve pipe 7 are upwards set successively, upper strata sleeve pipe 7 and screen pipe 8 and steel sleeve pipe 9 are by screwed connection, in steel sleeve pipe 9 and competent bed basement rock 3 gaps, be provided with cement injection layer 6, cement injection layer 6 water-bearing layer, top is provided with gravel filling layer 5 in 2 gaps, in gravel filling layer 5 Surface mulch layer 1 gap, top, be provided with clay ball backfilling layer 4, until earth's surface;
Open hole sidewall (10) is the cylindric type borehole wall that rig forms in competent bed basement rock (3) internal drilling, open hole sidewall (10) is positioned at below steel sleeve pipe (9), upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9), open hole sidewall (10) form a T-shape container successively downwards, described immersible pump (11) is arranged on T-shape container bottom, described conventional inverted well (18) is arranged in the space of Surface mulch layer (1), water-bearing layer (2), on competent bed basement rock (3); Described immersible pump (11) is connected with plate type heat exchanger (12) primary side water inlet end by pipeline, the backwater end of plate type heat exchanger (12) connects a threeway by water return pipeline, threeway one end is placed in T-shape container top, the threeway other end is connected with by-pass valve (17) one end, and by-pass valve (17) other end is connected to conventional inverted well (18) by pipeline; The secondary side of plate type heat exchanger (12) forms closed circuit after being connected by pipeline with the ground source of secondary side circulating pump (13), earth source heat pump unit (14) successively, and the load-side of described earth source heat pump unit (14) forms closed circuit after being connected by pipeline with described user's side circulating pump (15), user's end (16) successively.
In the present embodiment, T-shape container can be arranged in parallel a plurality of, and T-shape container upper diameter is 325mm, is highly no more than 50m, and T-shape container lower diameter is 200mm, is highly 100-500m.
The present invention also provides a kind of method that water resource heat pump recharges that solves, and comprises the following steps:
A, employing water drilling rig pore-forming, aperture is 550～600mm, first rig penetrates Surface mulch layer 1, enter into afterwards water-bearing layer 2, expose behind water-bearing layer 2, rig enters competent bed basement rock 3, and entering competent bed basement rock 3 degree of depth is after 2～3m, to stop to bore, in boring, upwards set gradually steel sleeve pipe 9, screen pipe 8 and upper strata sleeve pipe 7, upper strata sleeve pipe 7 and screen pipe 8 and steel sleeve pipe 9 are by screwed connection;
B, the gap injected water mud in boring with steel sleeve pipe 9, inject the degree of depth 2～3m, solidifies rear formation cement injection layer 6; Cement injection layer 6 guarantees that steel sleeve pipe 9 embeds competent bed basement rock 3;
C, after cement injection layer 6 solidifies, on cement injection layer 6 top, gravel fillings are installed, gravel filling finishes during 2 top 2-3m to water-bearing layer, forms gravel filling layer 5, clay ball backfilling layer 4 is installed above gravel filling layer 5, till earth's surface;
D, after completing above operation, again set up rig, in the middle of upper strata sleeve pipe 7, screen pipe 8 and steel sleeve pipe 9, continue boring downwards, boring aperture 200mm, boring is goed deep into competent bed basement rock 3 for 100-500m, the T-shape container being comprised of upper strata sleeve pipe 7, screen pipe 8, steel sleeve pipe 9 and bottom open hole sidewall 10 of rear formation of having holed.Setting up rig apart from the place of T-shape container 30-60m, penetrate Surface mulch layer 1, enter into afterwards water-bearing layer 2 and drill through the conventional inverted well 18 of a bite;
E, to T-shape container, inject clear water, form a T-shape heat exchanger, at T-shape heat exchanger bottom installing submersible pump 11, by pipeline, immersible pump 11 is connected to the primary side of plate type heat exchanger 12, the secondary side of plate type heat exchanger 12 successively with secondary side circulating pump 13, after connecting, the ground source of earth source heat pump unit 14 forms closed circuit, the load cycle side of described earth source heat pump unit 14 successively with described user's side circulating pump 15, after connecting, user's end 16 forms closed circuit, on water return pipeline after plate type heat exchanger 12 heat exchange, threeway is set, threeway one end is connected to T-shape heat exchanger top, the threeway other end is installed by-pass valve 17, by-pass valve 17 is connected with conventional inverted well 18 by pipeline.
In the present embodiment, T-shape heat exchanger can be arranged in parallel a plurality of.
In the present embodiment: Surface mulch layer 1 thickness is local actual Surface mulch layer thickness.Water-bearing layer 2 thickness are no more than 50m.The rock stratum that competent bed basement rock 3 is difficult for caving in for quartzy sandstone, granite, siliceous limestone, the isopyknic chance water of siliceous cementing conglomerate.The particle diameter of clay ball backfilling layer 4 medium clay soil ball is 4-5cm, and bed thickness is Surface mulch layer thickness, adopts clay shutoff, is plugging material and method for blocking for conventional well.Gravel filling layer 5 adopts the gravel of diameter 5-10 mm to fill, and filling thickness is water-bearing layer thickness.Cement injection layer 6 adopts cement injection, and thickness is 2～3m, and slip casting is solidified rear steel sleeve pipe 9 and embedded competent bed basement rock 3.
Upper strata sleeve pipe 7 is steel pipe, Ф 325mm, and thickness 8mm, bottom and screen pipe 8 are by screwed connection.Screen pipe 8 is floral tube, adopts the steel pipe of Ф 325, and the circular mesh of Drilling or bar hole, be plum blossom-shaped and arrange in its surface, circle eye diameter 20mm, and longitudinally eye distance 60mm, lays some pad muscle at filter pipe outer wall, for ￠ 6-￠ 8mm, then wraps up 60 object nylon wires.Steel sleeve pipe 9 is steel pipe, Ф 325mm, and thickness 8mm, top and screen pipe 8 are by screwed connection.Competent bed basement rock 3 walls that open hole sidewall 10 forms for boring, Ф 200mm, open hole bottom is chosen as 400m with the actual range of steel sleeve pipe 9.
Immersible pump 11: be installed in 3 borings of competent bed basement rock, apart from competent bed basement rock 3 foot of hole 5m.Plate type heat exchanger 12 is conventional heat exchanger.Secondary side circulating pump 13 is clarified water pump.Earth source heat pump unit 14 is heat exchange unit.User's side circulating pump 15 is clarified water pump.User's end 16 is a kind of in fan coil, floor panel heating coil pipe, new blower fan group.
By-pass valve 17 is electric adjustable ratio adjusting valve, and valve opening is controlled in 10% at ordinary times, can greatly extend the heat exchanger life-span, and the life-span can be reached more than 30 years; By regulating the aperture of by-pass valve 17 can control the amount of recharging, when conventional inverted well 18 reaches maximum water recharge capacity, by-pass valve 17 has a corresponding aperture, and this aperture is limit aperture, and the aperture of by-pass valve 17 is in 0～limit aperture.Can progressively tune up by gradation the aperture of by-pass valve 17, the water level of observation inverted well 18, until the water level of conventional inverted well 18 will overflow when not overflowing and reaching balance again, now corresponding valve opening is limit aperture, now can guarantee that 100% recharges; The aperture that occurs the situation downward large shunt valve 17 that heat connects in this system, can make system recover very soon normally, thoroughly solves heat and connects.Conventional inverted well 18 is conventional well, the upper strata sleeve pipe 7 of inner Ф 325 and the screen pipe 8 of Ф 325, for shunt 10% with the recharging of interior water, apart from T-shape heat exchanger 30～60m.
The operation principle of the method that a kind of combined-type ground source heat pump provided by the invention and solution water resource heat pump recharge: immersible pump 11 draws water, through pipeline, water is sent to plate type heat exchanger 12 heat exchange from T-shape heat exchanger bottom, current after heat exchange are through threeway, part water is got back to T-shape heat exchanger top, under the swabbing action of immersible pump 11, water flows from top to bottom along T-shape heat exchanger, continuous and crag heat exchange in flow process, after arriving bottom, by immersible pump 11, be evacuated to plate type heat exchanger 12 heat exchange again, form first circulation, on first circulating backwater, be provided with threeway.Another part water after threeway is delivered to conventional inverted well 18 through by-pass valve 17.Due to shunting action, T-shape heat exchanger top water level declines, and ceaselessly supplementing water of screen pipe 8 can be passed through in water-bearing layer 2, the water balance of the amount of moisturizing and by-pass valve 17 shuntings.The ground source that the secondary side of plate type heat exchanger 12 is delivered to source pump 14 by secondary side circulating pump 13 by cold (heat) amount from primary side carries out cycle heat exchange, this is second circulation, the opposite side of source pump 14 is that load-side is sent to terminal temperature difference 16 by cold (heat) under the effect of user's side circulating pump 15, for user provides cold and hot service, this is the 3rd circulation.Through three circulations, this NEW TYPE OF COMPOSITE earth-source hot-pump system continues, stable, efficiently for user provides cold and hot service.
The advantage of the method that a kind of combined-type ground source heat pump provided by the invention and solution water resource heat pump recharge is:
1, thoroughly solved water resource heat pump and recharged problem, can accomplish that 100% recharges.
2, solved the problem that individual well circulatory system heat connects.
3, heat exchange efficiency is high, and pipe-buried type ground source heat pump efficiency height improves greatly more routinely, and the heat that T-shape heat exchange unit can provide can reach 1500kW.
4, floor space is little, the construction period is short, applicability is strong.
5, system cost is low, the life-span is long, and the life-span can reach the more than 10 times of conventional water resource heat pump well life-span.
Through facts have proved, this invention is at source, somewhere heat pump composite test platform through test of many times, and this invention effect of experiment results proved is good, with the obvious advantage.
Claims (10)
1. a combined-type ground source heat pump, it is characterized in that: comprise Surface mulch layer (1), water-bearing layer (2), competent bed basement rock (3), clay ball backfilling layer (4), gravel filling layer (5), cement injection layer (6), upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9), open hole sidewall (10), immersible pump (11), plate type heat exchanger (12), secondary side circulating pump (13), earth source heat pump unit (14), user's side circulating pump (15), user's end (16), by-pass valve (17), conventional inverted well (18) and associated conduit,
In Surface mulch layer (1), water-bearing layer (2), in the space of the interior 2-3m of competent bed basement rock (3), described steel sleeve pipe (9) is upwards set successively, screen pipe (8), upper strata sleeve pipe (7), described upper strata sleeve pipe (7) and screen pipe (8) and steel sleeve pipe (9) are by screwed connection, in steel sleeve pipe (9) and competent bed basement rock (3) gap, be provided with cement injection layer (6), cement injection layer (6) water-bearing layer, top (2) is provided with gravel filling layer (5) in gap, in gravel filling layer (5) top Surface mulch layer (1) gap, be provided with clay ball backfilling layer (4), until earth's surface,
Described open hole sidewall (10) is the cylindric type borehole wall that rig forms in competent bed basement rock (3) internal drilling, open hole sidewall (10) is positioned at below steel sleeve pipe (9), upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9), open hole sidewall (10) form a T-shape container successively downwards, described immersible pump (11) is arranged on T-shape container bottom, described conventional inverted well (18) is arranged in the space of Surface mulch layer (1), water-bearing layer (2), on competent bed basement rock (3); Described immersible pump (11) is connected with plate type heat exchanger (12) primary side water inlet end by pipeline, the backwater end of plate type heat exchanger (12) connects a threeway by water return pipeline, threeway one end is placed in T-shape container top, the threeway other end is connected with by-pass valve (17) one end, and by-pass valve (17) other end is connected to conventional inverted well (18) by pipeline; The secondary side of plate type heat exchanger (12) forms closed circuit after being connected by pipeline with the ground source of secondary side circulating pump (13), earth source heat pump unit (14) successively, and the load-side of described earth source heat pump unit (14) forms closed circuit after being connected by pipeline with described user's side circulating pump (15), user's end (16) successively.
2. a Ju a kind of combined-type ground source heat pump claimed in claim 1, is characterized in that: described water-bearing layer (2) thickness is no more than 50m; Described competent bed basement rock (3) deeply distance is 100m～500m.
3. a Ju a kind of combined-type ground source heat pump claimed in claim 1, it is characterized in that: the particle diameter of described clay ball backfilling layer (4) medium clay soil ball is 4-5cm, clay ball backfilling layer (4) bed thickness is Surface mulch layer (1) thickness, described gravel filling layer (5) adopts the gravel of diameter 5-10 mm to fill, and gravel filling layer (5) filling thickness is water-bearing layer (2) bed thickness; The filling thickness of described cement injection layer (6) is 2-3m.
4. a Ju a kind of combined-type ground source heat pump claimed in claim 1, is characterized in that: described upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9) caliber are 325mm.
5. a kind of combined-type ground source heat pump according to claim 1, is characterized in that: described immersible pump (11) is 5m with the distance of T-shaped container bottom.
6. a Ju a kind of combined-type ground source heat pump claimed in claim 1, is characterized in that: the aperture of described by-pass valve (17) is 0-limit aperture, and limit aperture is the aperture of the amount of recharging of conventional inverted well (18) by-pass valve 17 correspondences while reaching capacity.
7. a Ju a kind of combined-type ground source heat pump claimed in claim 1, is characterized in that: described conventional inverted well (18) is 30-60m with the horizontal range of described T-shape container.
8. a Ju a kind of combined-type ground source heat pump claimed in claim 7, it is characterized in that: described T-shape container can be arranged in parallel a plurality of, T-shape container upper diameter is 325mm, is highly no more than 50m, T-shape container lower diameter is 200mm, is highly 100-500m.
9. solve the method that water resource heat pump recharges, it is characterized in that: comprise the following steps:
A, employing water drilling rig pore-forming, aperture is 550～600mm, first rig penetrates Surface mulch layer (1), enter into afterwards water-bearing layer (2), expose behind water-bearing layer (2), rig enters competent bed basement rock (3), and entering competent bed basement rock (3) degree of depth is after 2～3m, to stop to bore, in boring, upwards set gradually steel sleeve pipe (9), screen pipe (8) and upper strata sleeve pipe (7), upper strata sleeve pipe (7) and screen pipe (8) and steel sleeve pipe (9) are by screwed connection;
B, the gap injected water mud in boring with steel sleeve pipe (9), inject the degree of depth 2～3m, solidifies rear formation cement injection layer (6);
C, after cement injection layer (6) solidifies, gravel filling is installed on cement injection layer (6) top, gravel filling finishes during (2) top 2-3m to water-bearing layer, form gravel filling layer (5), in gravel filling layer (5) top, clay ball backfilling layer (4) is installed, till earth's surface;
D, after completing above operation, again set up rig, in the middle of upper strata sleeve pipe (7), screen pipe (8) and steel sleeve pipe (9), continue boring downwards, boring aperture is 200mm, boring is goed deep into competent bed basement rock (3) distance for 100-500m, the T-shape container being comprised of upper strata sleeve pipe (7), screen pipe (8), steel sleeve pipe (9) and bottom open hole sidewall (10) of rear formation of having holed; Setting up rig apart from the place of T-shape container 30-60m, penetrate Surface mulch layer 1, enter into afterwards water-bearing layer 2 and drill through the conventional inverted well (18) of a bite;
E, to T-shape container, inject clear water, form a T-shape heat exchanger, at T-shape heat exchanger bottom installing submersible pump (11), by pipeline, immersible pump (11) is connected to the primary side of plate type heat exchanger (12), the secondary side of plate type heat exchanger (12) successively with secondary side circulating pump (13), after connecting, the ground source of earth source heat pump unit (14) forms closed circuit, described earth source heat pump unit (14) load-side successively with described user's side circulating pump (15), user's end (16) forms closed circuit after connecting by pipeline, on water return pipeline after plate type heat exchanger (12) secondary side heat exchange, threeway is set, threeway one end is connected to T-shaped heat exchanger top, the threeway other end is installed by-pass valve (17), by-pass valve (17) is connected with conventional inverted well (18) by pipeline.
10. a kind of method that water resource heat pump recharges that solves according to claim 9, is characterized in that: described T-shape heat exchanger can be arranged in parallel a plurality of.
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| CN111928534A (en) * | 2020-08-13 | 2020-11-13 | 四川锦城佳禾生态环保科技有限公司 | Water source heat pump recharging method for combined ground source heat pump system |
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