CN106247682B - Spring source terrestrial heat utilization system based on earth source heat pump - Google Patents
Spring source terrestrial heat utilization system based on earth source heat pump Download PDFInfo
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- CN106247682B CN106247682B CN201610770284.1A CN201610770284A CN106247682B CN 106247682 B CN106247682 B CN 106247682B CN 201610770284 A CN201610770284 A CN 201610770284A CN 106247682 B CN106247682 B CN 106247682B
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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
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Abstract
The invention belongs to geothermal utilization fields.Spring source terrestrial heat utilization system provided by the invention based on earth source heat pump, heat source well are arranged near spring source, the energy of spring in heat source well can be used in geothermal system.It is designed with heat exchanger in each heat source well, for collecting the thermal energy of spring, refrigerant and heating agent pass through multiple cycle heat exchange in heat exchanger, and heat transfer effect is more preferable.
Description
Technical field
The present invention relates to geothermal utilization fields, and in particular to the spring source terrestrial heat utilization system based on earth source heat pump.
Background technique
Spring is the place that earth's surface is exposed in the natural exposure of underground water to the place of earth's surface or underground reservoir.According to water flow
The difference of situation can be divided into intermittent spring and normal natural flow.If underground water does not form appreciable current after exposing earth's surface, referred to as seep
Water.According to water flow temperature, spring can be divided into hot spring and cold spring.Spring can be divided into eight grades according to its uninterrupted, the stream of level-one spring
Amount is more than 100 cubic feet per second (2800 liters), and the flow of second level spring is per second between 10 to 100 cubic feet, eight grades of currents of spring
Amount is then less than 1 pint per minute (8 milliliters per second).Spring provides ideal water source for the mankind, while can also constitute many sights
It appreciates landscape and tourist resources and drinks spring etc. such as physical therapy spring.China's spring sum it is countless, be widely distributed, type nor
Often abundant, each place name spring is too numerous to enumerate.
Since China's spring is widely distributed, quantity is unequal to its number, so the geothermal utilization of spring has become geothermal utilization
Recent studies on direction, but in the prior art and provide effective spring water utilization system.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of spring source terrestrial heat utilization system based on earth source heat pump,
It can be realized spring source geothermal utilization, spring source capacity usage ratio is high.
Spring source terrestrial heat utilization system based on earth source heat pump, including heat-exchange system, earth's surface pipeline and earth source heat pump system
System;Ground-source heat pump system includes compressor, evaporator, expansion valve and condenser;The entrance of evaporator respectively with heat-exchange system
Outlet connected with the outlet of earth's surface pipeline, the entrance of condenser connects with the outlet of heat-exchange system and the outlet of earth's surface pipeline respectively
Connect, the outlet of evaporator is connect with the entrance of the entrance of heat-exchange system and earth's surface pipeline respectively, the outlet of condenser respectively with change
The entrance of hot systems is connected with the entrance of earth's surface pipeline;The heat-exchange system includes that circulating pump, heat exchange valve, setting are attached in spring source
Close heat source well and heat exchanger;Heat exchanger is arranged in heat source well;Heat exchanger is successively connected with circulating pump and heat exchange valve;Describedly
Table pipeline is embedded in house indoor below ground;The heat exchanger includes heat exchanger tube and the heat exchange at heat exchanger tube both ends is arranged in enters
Mouth and heat exchange outlet;Heat exchanger tube include heat exchange inner tube and with heat exchange inner tube coaxial arrangement heat exchange outer tube, heat exchange inner tube it is interior
Chamber forms the cold water channel of connection heat exchange entrance and heat exchange outlet, and the chamber formation between heat exchange inner tube and heat exchange outer tube, which is connected to, changes
The hot water channel of hot entrance and heat exchange outlet;It is successively parallel to each other in heat exchange inner tube equipped with first partition, second partition and third
Cold water channel is divided into first chamber, second chamber, third chamber and the 4th chamber by partition;It further include the first connecting tube,
Two connecting tubes, third connecting tube and the 4th connecting tube;First connecting tube is arranged from first chamber across second chamber;Second connection
Pipe passes through third chamber from second chamber and protrudes into the 4th chamber, and wears back the setting of third chamber from the 4th chamber flex;Third
Connecting tube passes through second chamber and protrude into first chamber from third chamber to be arranged;Third connecting tube passes through the second chamber from first chamber
Room and third chamber protrude into setting in the 4th chamber.
Preferably, the heat exchange inner tube is made from a material that be thermally conductive.
Preferably, the end of first connecting tube, the second connecting tube, third connecting tube and the 4th connecting tube is equipped with list
To valve;Wherein the flap of check valve is opened along the direction for passing through second chamber from first chamber in the first connecting tube;Second connects
The flap that adapter tube is located at check valve in the end in second chamber is opened along the direction for passing through third chamber from second chamber, the
The flap that two connecting tubes are located at check valve in the indoor end of third chamber is beaten along from the direction that the 4th chamber passes through third chamber
It opens;The flap of check valve is opened along the direction for passing through second chamber from third chamber in third connecting tube;In 4th connecting tube
The flap of check valve is opened along the direction for passing through second chamber from first chamber.
Preferably, it is additionally provided with filter in the heat source well, filter includes:First level filtering device and secondary filtration dress
It sets, the two-stage filter is set in the first level filtering device;The first level filtering device includes base pipe, protection gear
Muscle and packet net, the base pipe are round tube, have been evenly arranged permeable hole on the basis tube wall, the protection block reinforcement is vertically welded
It connects in basic pipe outer wall, protection block reinforcement is equally spaced, and the packet net is wrapped in protection block reinforcement and basic pipe outer wall, packet net
The range vertically wrapped up is greater than the range of protection block reinforcement, and packet net external application iron wire is fastened in protection block reinforcement and basic pipe outer wall
On;The two-stage filter includes inner tube, outer tube, partition and filter core, and said inner tube and outer tube are round tube, inner and outer tubes
It is coaxially disposed, has been evenly arranged permeable hole on outer tube wall, outer tube top is provided with hanging ring, described partition one end and outer wall of inner tube
It is fixedly connected, the partition other end is fixedly connected with outer tube wall, and partition will be divided into multiple chambers between inner tube and outer tube, described
Filter core is filled in the cavity, and chamber upper and lower side is opening, for the water after filter element filtering to be discharged;The outer tube top is set
It is equipped with outwardly projecting annular outer tube excrescence, the base pipe is provided with excrescence and base on inwardly projecting ring foundation pipe
Excrescence under plinth pipe, the outer tube are passed down through excrescence inner circle on the base pipe, and outer tube excrescence is pressed on base pipe and dashes forward
Out on body, outer pipe bottom is pressed under the base pipe on excrescence, is padded between excrescence and outer tube excrescence on the base pipe
There is rubber mat, is lined with rubber mat between excrescence and outer pipe bottom under the base pipe.
Preferably, the filter core is stainless steel filter core, is provided on the outer wall and partition of said inner tube outwardly projecting solid
Determine part, the fixing piece is for fixing the stainless steel filter core.
Preferably, the cross-sectional area of each chamber is equal.
Preferably, the permeable hole of the base pipe is strip-shaped hole, and adjacent two rows mutually stagger the strip-shaped hole above and below.
Preferably, the protection block reinforcement uses antirust round steel, and the round steel diameter is 4mm, and round steel spacing is 20mm.
Preferably, the packet net is nylon yarn packet net.
Preferably, the iron wire uses galvanized wire, and it is 10mm that iron wire, which winds spacing,.
As shown from the above technical solution, the spring source terrestrial heat utilization system provided by the invention based on earth source heat pump, heat source
Well is arranged near spring source, and the energy of spring in heat source well can be used in geothermal system.It is designed in each heat source well
Heat exchanger, for collecting the thermal energy of spring, refrigerant and heating agent pass through multiple cycle heat exchange in heat exchanger, and heat transfer effect is more preferable.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the structural schematic diagram of the terrestrial heat utilization system provided in the present embodiment.
Fig. 2 shows the structural schematic diagrams of heat exchanger in the terrestrial heat utilization system provided in the present embodiment;
Fig. 3 is the schematic cross-sectional view of filter in the embodiment of the present invention;
Fig. 4 is the A-A cross-sectional view of Fig. 3;
Fig. 5 is the B-B cross-sectional view of Fig. 3;
Fig. 6 is the C-C cross-sectional view of Fig. 3;
Fig. 7 is structural schematic diagram of the base pipe of filter in the embodiment of the present invention in conjunction with two-stage filter;
Fig. 8 is the structural schematic diagram of the two-stage filter of filter in the embodiment of the present invention.
In attached drawing, 41- heat-exchange system, 42- ground-source heat pump system, 43- earth's surface pipeline, 21- first chamber, the second chamber of 22-
Room, 23- third chamber, the 4th chamber of 24-, 25- first partition, 26- second partition, 27- third partition, 30- heat exchange entrance,
31- heat exchange outlet, the first connecting tube of 32-, the second connecting tube of 33-, 34- third connecting tube, the 4th connecting tube of 35-.1- base pipe;
Excrescence on 11- base pipe;Excrescence under 12- base pipe;2- protects block reinforcement;3- packet net;4- iron wire;5- outer tube;The outer rostrum of 51-
Body out;52- hanging ring;6- inner tube;61- fixing piece;7- chamber;8- partition;9- permeable hole;28- hot water channel.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be intended only as example, and cannot be used as a limitation and limit protection of the invention
Range.
Embodiment:
Spring source terrestrial heat utilization system based on earth source heat pump, as shown in Figure 1, include heat-exchange system 41, earth's surface pipeline 43,
And ground-source heat pump system 42;Ground-source heat pump system 42 includes compressor, evaporator, expansion valve and condenser;Evaporator
Entrance is connect with the outlet of heat-exchange system and the outlet of earth's surface pipeline respectively, the entrance of condenser respectively with the outlet of heat-exchange system
It is connected with the outlet of earth's surface pipeline, the outlet of evaporator is connect with the entrance of the entrance of heat-exchange system and earth's surface pipeline respectively, cold
The outlet of condenser is connect with the entrance of the entrance of heat-exchange system and earth's surface pipeline respectively;The heat-exchange system includes circulating pump, changes
Thermal valve is arranged in the fontinal heat source well of spring and heat exchanger;Heat exchanger is arranged in heat source well;Heat exchanger successively with circulating pump
It connects with heat exchange valve;The earth's surface pipeline is embedded in house indoor below ground;The heat exchanger, as shown in Fig. 2, including heat exchange
Pipe and heat exchange entrance 30 and the heat exchange outlet 31 that heat exchanger tube both ends are set;Heat exchanger tube include heat exchange inner tube and with heat exchange
The heat exchange outer tube of inner tube coaxial arrangement, the inner cavity of heat exchange inner tube form the cold water channel of connection heat exchange entrance and heat exchange outlet, change
Chamber between hot inner tube and heat exchange outer tube forms the hot water channel for being connected to heat exchange entrance and heat exchange outlet;In heat exchange inner tube successively
It is parallel to each other and is equipped with first partition 25, second partition 26 and third partition 27, cold water channel is divided into first chamber 21, second
Chamber 22, third chamber 23 and the 4th chamber 24;It further include the first connecting tube 32, the second connecting tube 33,34 and of third connecting tube
4th connecting tube 35;First connecting tube is arranged from first chamber across second chamber;Second connecting tube passes through the from second chamber
Three chambers protrude into the 4th chamber, and wear back the setting of third chamber from the 4th chamber flex;Third connecting tube is worn from third chamber
It crosses second chamber and protrudes into setting in first chamber;Third connecting tube passes through second chamber and third chamber from first chamber and protrudes into the
Setting in four chambers.
Heating agent enters hot water channel from heat exchange entrance, and flows out from heat exchange outlet;Refrigerant enters cold water from heat exchange entrance and leads to
Road, and heating agent and refrigerant are realized from heat exchange outlet outflow by the thermally conductive and fluid of heat exchange inner tube wall surface in the convection current of wall surface
Heat exchange.Refrigerant from heat exchange entrance enter cold water channel after, part refrigerant rests in first chamber, the heating agent with hot water channel
Realize heat exchange, part refrigerant flows to second chamber from first chamber along the first connecting tube.Into the refrigerant of second chamber, part
Refrigerant rests in second chamber, realizes and exchanges heat with the heating agent of hot water channel, and part refrigerant is along the second connecting tube from the second chamber
Room flows to third chamber.Into the refrigerant of third chamber, part refrigerant is rested in third chamber, real with the heating agent of hot water channel
It now exchanges heat, part refrigerant flows to first chamber from third chamber along third connecting tube.Into the refrigerant of first chamber, part is cold
Matchmaker rests in first chamber, realizes and exchanges heat with the heating agent of hot water channel, and part refrigerant is along the 4th connecting tube from first chamber
The 4th chamber is flowed to, and is flowed out from heat exchange outlet.The refrigerant can realize repeatedly circulation and repeatedly heat exchange in energy converter, can
More efficiently realize heat exchange.The heat exchange inner tube is made from a material that be thermally conductive, and can preferably improve the heat exchange effect of heating agent and refrigerant
Fruit.
Under supplying thermal condition, the ground-source heat pump system is followed by entrance four-way reversing valve and outlet four-way reversing valve control
The flow direction of ring water makes outdoor recirculated water (both spring) be introduced into the evaporator heat release, transfers heat to heating agent, returns after cooling
It returns ground buried via hole to absorb heat again, forming chamber outer circulation.The ground-source heat pump system, will be in the evaporation by the compressor work
The heating agent that device has absorbed heat passes to the condenser, and the interior of completion heating agent and earth's surface pipeline is followed in the condenser
The heat exchange of ring water;After heating agent after heat transfer cooling is depressurized by the expansion valve, back flows back into the evaporator and absorbs heat again,
Form heat pump heat supply circulation.It is complete by earth's surface pipeline after the heat that indoor circulating water draws the condenser reaches heating temperature
Condenser is returned at indoor heat release, after cooling to absorb heat again, is formed indoor circulation, is reached indoor heating effect.
Under cooling condition, the outdoor recirculated water in heat-exchange system rejects heat to heat source well by the heat exchanger,
It is sent into the condenser of the ground-source heat pump system afterwards, absorbs the heat in refrigerant, then returns to release heat, is followed outside forming chamber
Ring.The ground-source heat pump system acting, will complete exothermic coolant transmission to the evaporator, and in institute in the condenser
State the heat that indoor circulating water in earth's surface pipeline is absorbed in evaporator;Refrigerant after heat absorption heating back flows back into the condenser again
Secondary heat release forms heat pump refrigeration cycle.The indoor circulating water to cool down through the evaporator heat release, by earth's surface pipeline suction chamber
Heat then returns to evaporator heat release again, completes indoor circulation, realizes the purpose of room temperature lowering.
The terrestrial heat utilization system, heat source well are arranged near spring source, can be used for ground for the energy of spring in heat source well
In hot systems.It is designed with heat exchanger in each heat source well, refrigerant and heating agent are through excessive in the thermal energy heat exchanger for collecting spring
Secondary cycle heat exchange, heat transfer effect are more preferable.
In order to utmostly exchange heat, reach better heat transfer effect.
Refrigerant return in order to prevent, the end of first connecting tube, the second connecting tube, third connecting tube and the 4th connecting tube
Portion is equipped with check valve;Wherein the flap of check valve is beaten along from the direction that first chamber passes through second chamber in the first connecting tube
It opens;Second connecting tube is located at the flap of check valve in the end in second chamber along the side for passing through third chamber from second chamber
To opening, the flap that the second connecting tube is located at check valve in the indoor end of third chamber passes through third chamber along from the 4th chamber
Direction open;The flap of check valve is opened along the direction for passing through second chamber from third chamber in third connecting tube;4th
The flap of check valve is opened along the direction for passing through second chamber from first chamber in connecting tube.
In above-mentioned connecting tube the setting of check valve ensure that refrigerant from heat exchange entrance enter first chamber after, through first connection
Pipe enters second chamber, enters third chamber using the second connecting tube, enters first chamber through third connecting tube, finally from
One chamber enter the 4th chamber after, from heat exchange outlet outflow, this ensure that refrigerant by repeatedly recycle and repeatedly exchange heat after
From heat exchange outlet outflow, heat transfer effect is more preferable.
Heat source well provides source of recycled water for entire ground-source heat pump system, is the important component of whole system, for heat
The filter of source well is mainly used for being filtered source of recycled water.But the filter of existing heat source well is relatively rough, it can only
The sand of a part of bulky grain is kept off, worry sand effect is poor, and silt is easily accessible in heat source well, and hoistway is caused to silt up, and immersible pump will contain
The water extraction of silt is utilized, and the damage of equipment is be easy to cause, and is influenced system operation, is caused heavy losses;If using existing
Some lesser accurate filters of filter opening, since filter opening is small, are easy blocking although filter effect is preferable, in well cleaning and
It is inconvenient, and there are contradictory relationships between the easy blocking of the good worry sand effect and filter opening of heat source well tube filter.
Thus in the present embodiment also provide be used for geothermal well filter, as shown in figures 3-8, including first level filtering device and
Two-stage filter, two-stage filter are set in first level filtering device;First level filtering device include circular base pipe 1,
Block reinforcement 2 and packet net 3 are protected, permeable hole 9 has been evenly arranged on 1 tube wall of base pipe, permeable hole 9 is strip-shaped hole, upper and lower adjacent two rows
It mutually staggers, protection block reinforcement 2 uses diameter for the antirust round steel of 4mm, is vertically welded on 1 outer wall of base pipe, its spacing is
20mm, packet net 3 are nylon yarn packet net 3, are wrapped on protection block reinforcement 2 and 1 outer wall of base pipe, the range that packet net 3 vertically wraps up is big
In the range of protection block reinforcement 2,3 external application galvanized wire 4 of packet net is fastened outside protection block reinforcement 2 and base pipe 1 with 10mm spacing
On wall;Two-stage filter includes inner tube 6, outer tube 5, partition 8 and filter core, and inner tube 6 and outer tube 5 are round tube, inner tube 6 and outer tube
5 are coaxially disposed, and permeable hole 9 has been evenly arranged on 5 tube wall of outer tube, and permeable hole 9 is round hole, and left and right two column mutually stagger, basis
The discharge area of the permeable hole 9 of pipe is greater than the discharge area of the permeable hole 9 of outer tube, the setting of 5 top of outer tube there are four hanging ring 52, every
8 one end of plate is fixedly connected with 6 outer wall of inner tube, and 8 other end of partition is fixedly connected with 5 inner wall of outer tube, and partition 8 is by inner tube 6 and outer tube 5
Between be divided into the equal chamber 7 of multiple cross-sectional areas, filter core uses stainless steel filter core, is filled in chamber 7, about 7 chamber
End is opening, for the water after filter element filtering to be discharged, is provided with outwardly projecting fixing piece on the outer wall and partition 8 of inner tube 6
61, fixing piece 61 for fixing stainless steel filter core, 1 surfaces externally and internally of base pipe, the surfaces externally and internally of inner tube 6, outer tube 5 surfaces externally and internally
Corrosion-resistant coating is coated with the surface of permeable hole 9;5 top of outer tube is provided with outwardly projecting annular outer tube excrescence 51, basis
Pipe 1 is provided on inwardly projecting ring foundation pipe that excrescence 12, outer tube 5 are passed down through base pipe under excrescence 11 and base pipe
Upper 11 inner circle of excrescence, outer tube excrescence 51 are pressed on base pipe on excrescence 11, and 5 bottom of outer tube is pressed in excrescence under base pipe
On 12, rubber mat is lined on base pipe between excrescence 11 and outer tube excrescence 51, under base pipe excrescence 12 and 5 bottom of outer tube it
Between be lined with rubber mat.
Filter of the present invention for heat source well includes first level filtering device and two-stage filter.Wherein by-pass filtration fills
It sets and silt is slightly considered, be mainly used for filtering out the sand of bulky grain;Bar shaped permeable hole has been evenly arranged on 1 tube wall of base pipe
9, upper and lower adjacent two rows mutually stagger, and permeable hole 9 is made to be more evenly distributed, and filtering enters the underground water of base pipe 1 also more evenly,
Nylon yarn packet net 3 is wrapped in outside pipe by protection 2 pad of block reinforcement, fixed with galvanized wire 4, and underground water will enter in heat source well,
Two layers of permeable hole 9 filtering by nylon yarn packet net 3 and base pipe is first had to, the sand of bulky grain is filtered out.Secondary filtration dress
It sets and smart worry is carried out to silt, be mainly used for filtering out tiny silt, two-stage filter includes inner tube 6, outer tube 5,8 and of partition
Filter core, inner tube 6 and outer tube 5 are coaxially arranged, and partition 8 is the connecting framework of inner tube 6 Yu outer tube 5, at the same by inner tube 6 and outer tube 5 it
Between space be divided into the equal chamber 7 of multiple cross-sectional areas, segmentation in this way filtering, each 7 water of chamber is uniform, can be promoted
The effect and efficiency of filtering, chamber 7 is interior to fill stainless steel filter core, and design in this way makes entire two-stage filter one
A entirety, sound construction;Meanwhile stainless steel filter core has good strainability, filtered underground water, which is able to satisfy system, to be made
With requiring, corrosion resistance, heat resistance, resistance to pressure, wearability are good, are able to satisfy severe underground environment, core stomata uniformly, it is accurate
Filtering accuracy, the flow of unit area is big, can improve the efficiency of essence worry, meet system water demand, can be with after cleaning
It reuses, it is free of replacement, it economizes on resources, reduces cost;Two-stage filter is mainly by 9 He of permeable hole being located on 5 tube wall of outer tube
Two layers of filter core filtering in chamber 7, left and right adjacent two column of permeable hole 9 mutually stagger, and so that permeable hole 9 is more evenly distributed, into chamber
The underground water of room 7 is also more evenly;The discharge area of the permeable hole 9 of base pipe is greater than the discharge area of the permeable hole 9 of outer tube, can protect
The thick worry of card provides enough waters for essence worry, promotes filter efficiency;The not set permeable hole 9 of inner tube 6,7 upper and lower end of chamber opening,
It after underground water enters chamber 7, flows to 7 both ends of chamber, is discharged from 7 upper and lower end of chamber, design in this way extends ground
It is lauched the flow path in filter core, improves filter effect, since in filter process, filter core is easy to happen displacement, conglomeration, Gu
Determine part 61 and fixed function risen to stainless steel filter core, when filtering, the flowing of water will not be such that filter core is subjected to displacement, filter core will not conglomeration,
To ensure that the normal work of filter core, filter effect is improved;The environment of underground is generally all relatively more severe, and corrosivity is stronger,
In the surface of 1 surfaces externally and internally of base pipe, the surfaces externally and internally of inner tube 6, the surfaces externally and internally of outer tube 5 and permeable hole 9 these and underground water
Or the part that soil directly contacts applies one layer of corrosion-resistant coating, can reduce the corrosion of filter component, prolong the service life.
First level filtering device filter opening is larger, is not easy to plug, and can filter out bulky grain sand, and two-stage filter filter opening is small,
Be easy blocking, tiny silt can be filtered out, by the way of this classified filtering, can more thoroughly filter out sand and
Reduce the probability of plugged filter.
Outer tube 5 is passed down through 11 inner circle of excrescence on base pipe, and outer tube excrescence 51 is pressed on base pipe on excrescence 11,
5 bottom of outer tube is pressed under base pipe on excrescence 12, by this dismountable mode by two-stage filter and by-pass filtration
Device is combined together, and in combination with rubber mat is lined between position, is compacted rubber mat, sealing by the self weight of two-stage filter
Effect is good, and silt will not be flowed out from gap;Two-stage filter and first level filtering device detachably separate, and can pass through outer tube 5
Two-stage filter is integrally lifted cleaning, maintenance or replacement by the hanging ring 52 of top setting, again will after cleaning, maintenance or replacement
Two-stage filter is hung in heat source well, is used in combination with first level filtering device, to solve good worry sand effect
The contradiction between blocking is easy with filter opening.
Filter for heat source well of the invention draw water it is different with the method for operation in recharge, it is specific as follows:
When drawing water, first level filtering device and two-stage filter collective effect are needed, secondary protection device is hung in into heat source
In well, outer tube 5 is passed down through 11 inner circle of excrescence on base pipe, and outer tube excrescence 51 is pressed on base pipe on excrescence 11, with
First level filtering device fits together, and the underground water containing silt flows through nylon yarn packet net 3, permeable through the bar shaped on base pipe 1
Hole 9 enters in heat source well, completes the by-pass filtration of silt by the filtering of nylon yarn packet net 3 and bar shaped permeable hole 9 outside well;Through
Underground water after crossing thick worry enters chamber 7 through the round permeable hole on outer tube 5, and the essence through stainless steel filter core is considered, from chamber 7,
Lower open mouth discharge, completes the secondary filtration of silt, to obtain the underground water source for meeting production requirement.
Recharge is that the water source after utilization is gone back to underground through heat source well irrigation to need to reduce the resistance of recharge by second level
Filter device is integrally hung out outside well, and recharge water is flowed out through the bar shaped permeable hole 9 on base pipe 1, is then flowed through nylon yarn packet net 3
Underground is returned to, with flow direction when filtering that draws water on the contrary, play the role of cleaning to first level filtering device, prevents filter hole from blocking,
Meanwhile after two-stage filter is hung out, it can be cleaned, repaired or be maintained.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that:Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (10)
1. the spring source terrestrial heat utilization system based on earth source heat pump, including heat-exchange system, earth's surface pipeline and earth source heat pump system
System;Ground-source heat pump system includes compressor, evaporator, expansion valve and condenser;The entrance of evaporator respectively with heat-exchange system
Outlet connected with the outlet of earth's surface pipeline, the entrance of condenser connects with the outlet of heat-exchange system and the outlet of earth's surface pipeline respectively
Connect, the outlet of evaporator is connect with the entrance of the entrance of heat-exchange system and earth's surface pipeline respectively, the outlet of condenser respectively with change
The entrance of hot systems is connected with the entrance of earth's surface pipeline;It is characterized in that, the heat-exchange system includes circulating pump, heat exchange valve, sets
It sets in the fontinal heat source well of spring and heat exchanger;Heat exchanger is arranged in heat source well;Heat exchanger successively with circulating pump and heat exchange
Valve series connection;The earth's surface pipeline is embedded in house indoor below ground;The heat exchanger includes heat exchanger tube and is arranged in heat exchanger tube
The heat exchange entrance at both ends and heat exchange outlet;Heat exchanger tube include heat exchange inner tube and with heat exchange inner tube coaxial arrangement heat exchange outer tube,
The inner cavity of heat exchange inner tube forms the cold water channel of connection heat exchange entrance and heat exchange outlet, the chamber between heat exchange inner tube and heat exchange outer tube
Room forms the hot water channel of connection heat exchange entrance and heat exchange outlet;It is successively parallel to each other in heat exchange inner tube equipped with first partition,
Cold water channel is divided into first chamber, second chamber, third chamber and the 4th chamber by two partitions and third partition;Further include
First connecting tube, the second connecting tube, third connecting tube and the 4th connecting tube;First connecting tube passes through second chamber from first chamber
Setting;Second connecting tube passes through third chamber from second chamber and protrudes into the 4th chamber, and wears back third from the 4th chamber flex
Chamber setting;Third connecting tube passes through second chamber and protrude into first chamber from third chamber to be arranged;Third connecting tube is from first
Chamber passes through second chamber and third chamber protrudes into setting in the 4th chamber.
2. the spring source terrestrial heat utilization system according to claim 1 based on earth source heat pump, which is characterized in that the heat exchange
Inner tube is made from a material that be thermally conductive.
3. the spring source terrestrial heat utilization system according to claim 1 based on earth source heat pump, which is characterized in that described first
Connecting tube, the second connecting tube, third connecting tube and the 4th connecting tube end be equipped with check valve;It is wherein single in the first connecting tube
It is opened to the flap of valve along the direction for passing through second chamber from first chamber;Second connecting tube is located at the end in second chamber
The flap of middle check valve is opened along the direction for passing through third chamber from second chamber, and it is indoor that the second connecting tube is located at third chamber
The flap of check valve is opened along the direction for passing through third chamber from the 4th chamber in end;The valve of check valve in third connecting tube
Valve is opened along the direction for passing through second chamber from third chamber;The flap of check valve is along from first chamber in 4th connecting tube
It is opened across the direction of second chamber.
4. the spring source terrestrial heat utilization system according to claim 1 based on earth source heat pump, which is characterized in that the heat source
Filter is additionally provided in well, filter includes:First level filtering device and two-stage filter, the two-stage filter are set to
In the first level filtering device;The first level filtering device includes base pipe, protection block reinforcement and packet net, and the base pipe is circle
It manages, has been evenly arranged permeable hole on the basis tube wall, the protection block reinforcement is vertically welded in basic pipe outer wall, protection gear
Muscle is equally spaced, and the packet net is wrapped in protection block reinforcement and basic pipe outer wall, and the range that packet net vertically wraps up is greater than protection
The range of block reinforcement, packet net external application iron wire are fastened in protection block reinforcement and basic pipe outer wall;The two-stage filter includes
Inner tube, outer tube, partition and filter core, said inner tube and outer tube are round tube, and inner and outer tubes are coaxially disposed, on outer tube wall uniformly
It is disposed with permeable hole, outer tube top is provided with hanging ring, and described partition one end is fixedly connected with outer wall of inner tube, the partition other end and outer
Inside pipe wall is fixedly connected, and partition will be divided into multiple chambers between inner tube and outer tube, and the filter core is filled in the cavity, chamber
Room upper and lower side is opening, for the water after filter element filtering to be discharged;The outer tube top is provided with outwardly projecting annular outer tube
Excrescence, the base pipe are provided on inwardly projecting ring foundation pipe excrescence, the outer tube under excrescence and base pipe
It is passed down through excrescence inner circle on the base pipe, outer tube excrescence is pressed on base pipe on excrescence, and outer pipe bottom is pressed in institute
It states under base pipe on excrescence, is lined with rubber mat on the base pipe between excrescence and outer tube excrescence, dashes forward under the base pipe
Rubber mat is lined between body and outer pipe bottom out.
5. the spring source terrestrial heat utilization system according to claim 4 based on earth source heat pump, it is characterised in that:The filter core
For stainless steel filter core, outwardly projecting fixing piece is provided on the outer wall and partition of said inner tube, the fixing piece is for fixing
The stainless steel filter core.
6. the spring source terrestrial heat utilization system according to claim 5 based on earth source heat pump, it is characterised in that:It is each described
The cross-sectional area of chamber is equal.
7. the spring source terrestrial heat utilization system according to claim 4 based on earth source heat pump, it is characterised in that:The basis
The permeable hole of pipe is strip-shaped hole, and adjacent two rows mutually stagger the strip-shaped hole above and below.
8. the spring source terrestrial heat utilization system according to claim 7 based on earth source heat pump, it is characterised in that:The protection
Block reinforcement uses antirust round steel, and the round steel diameter is 4mm, and round steel spacing is 20mm.
9. the spring source terrestrial heat utilization system according to claim 7 based on earth source heat pump, it is characterised in that:The packet net
For nylon yarn packet net.
10. the spring source terrestrial heat utilization system according to claim 9 based on earth source heat pump, it is characterised in that:The iron
Silk uses galvanized wire, and it is 10mm that iron wire, which winds spacing,.
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