CN106989541A - A kind of multistage inner tube winterization system, freeze-proof heat exchanger and application - Google Patents
A kind of multistage inner tube winterization system, freeze-proof heat exchanger and application Download PDFInfo
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- CN106989541A CN106989541A CN201710392426.XA CN201710392426A CN106989541A CN 106989541 A CN106989541 A CN 106989541A CN 201710392426 A CN201710392426 A CN 201710392426A CN 106989541 A CN106989541 A CN 106989541A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000007710 freezing Methods 0.000 claims abstract description 15
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 230000008014 freezing Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011796 hollow space material Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000002528 anti-freeze Effects 0.000 abstract description 23
- 230000008961 swelling Effects 0.000 abstract description 7
- 230000009172 bursting Effects 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 12
- 229920001296 polysiloxane Polymers 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 108010053481 Antifreeze Proteins Proteins 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/006—Preventing deposits of ice
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of multistage inner tube winterization system, freeze-proof heat exchanger and application, belong to heat pump field, solve existing heat exchanger in the case of power failure can not utilize external heat, heat exchanger tube inner water tube causes by the technical problem of bursting by freezing because of icing.A kind of multistage inner tube winterization system of the present invention, including outer tube, outer tube are provided with inner tube, and described inner tube is hollow elastic hose, and internal tube is provided with more than one cut-off.In the case of water flowing, the swelling volume frozen is offset in the contraction frozen by inner tube, prevents outer tube because icing increase causes rupture.Described inner tube hollow part is full of inert gas, and air-tightness and watertightness are good, and gas is stable, and security and stability is good, can only be influenceed by external pressure.Inner tube one end is anchor tip, and the other end is sealed end, and anchor tip is fixed on outer tube, and sealed end stretches into outer tube.The present invention realizes high efficient heat exchanging and antifreeze, and simple in construction, cheap, easy for installation.
Description
Technical field
The present invention relates to heat pump air conditioner field, more specifically to a kind of multistage inner tube winterization system, freeze-proof heat exchanger
And application.
Background technology
The double-tube heat exchanger that air-conditioning is used all is the heat exchange between refrigerant and water to realize its function.Existing heat-pump hot-water
The double pipe heat exchanger of device is constituted by refrigerant pipe and sleeve pipe, and refrigerant pipe is arranged in sleeve pipe, refrigerant pipe outer wall and internal surface of sleeve pipe
Between surround water heating chamber jointly, sleeve pipe turns to coil-like, coil-like sleeve surface provided with heat-insulation layer together with refrigerant pipe.
During use, because double pipe heat exchanger is installed outdoors, when outdoor temperature is less than 0 DEG C, the water in sleeve pipe is to be possible to
Freeze, cause sleeve pipe and the easy bursting by freezing of refrigerant pipe.Because there is water in double-tube heat exchanger, just there is freezing danger, winter naturally
Shut down in air-conditioner set evening in season or the long-term not used time, under unit power-off, anti-frost protection failure conditions, such as not in heat exchanger
Water put only, then will be too low and freezing due to environment temperature.The heat exchange of prior art mostly by coolant to heat pump and air-conditioning
Device progress is antifreeze, but anti-icing fluid cost is high, and has certain service life, configures more complicated, pollutes huge.
Chinese patent application, application number 201410527136.8, discloses a kind of sleeve pipe at publication date on January 21st, 2015
Formula heat exchanger anti-freezing structure and its antifreeze method, its structure include refrigerant pipe, sleeve pipe, storage tank and control circuit, and refrigerant pipe is set
Put in sleeve pipe, surround water heating chamber between refrigerant pipe outer wall and internal surface of sleeve pipe jointly, water heating chamber one end is connected with storage tank；
It is characterized in that：Also include water circulating pump, outdoor temperature sensor and the water level switch being connected respectively with control circuit electrical；Institute
Water circulating pump is stated provided with water inlet and delivery port, water inlet is connected with water inlet pipe and storage tank respectively by electric three-way regulating valves
Connect, delivery port is connected with the water heating chamber other end；The water level switch is located in storage tank, and correspondence water level switch in storage tank
The moisture storage capacity of residing height and position is more than or equal to water heating chamber moisture storage capacity.Such double pipe heat exchanger anti-freezing structure can be by following
Ring water pump drives the water in water heating chamber to flow, so as to slow down the speed of its icing under necessarily slightly.This mode deicing requirements
Carried out in the case where needing to heat in water, under power failure or other harsh conditions, it is impossible to use.
Chinese patent application, application number 201420804459.2, discloses a kind of antifreeze at publication date on July 18th, 2015
Jacket heat exchange of heat pipe, the anti-freeze type double-tube heat exchanger, including refrigerant import, knockout, reinforced pipe, heat exchanger main body copper pipe, end
Lid, delivery port and main body steel pipe, the reinforced pipe are placed in heat exchanger main body copper pipe, and knockout is passed through between two reinforced pipes
Connection, knockout is connected to refrigerant import.The anti-freeze type double-tube heat exchanger also includes antifreeze temperature-sensitive blind pipe, the antifreeze temperature-sensitive
In blind pipe insertion main body steel pipe, antifreeze temperature-sensitive blind pipe is fixed on end cap；Antifreeze temperature-sensitive blind pipe one end closing, the other end is opened
Mouthful, antifreeze temperature-sensitive blind pipe is internally provided with antifreeze temperature-sensitive head.The real-time prison that the anti-freeze type double-tube heat exchanger passes through antifreeze temperature-sensitive head
Survey, it is ensured that the anti-frost protection of heat exchanging device.Such a heat exchanger is mainly detected by popping one's head in, it is ensured that protection, but still
Electricity is needed, under power failure or other harsh conditions, it is impossible to use.And do not provide and to make corresponding how at low temperatures
Improvement.
The content of the invention
1. the technical problem to be solved
Big for existing use anti-icing fluid cost height, pollution present in prior art, other modes can not power off operation
The problem of, the invention provides a kind of multistage inner tube winterization system, freeze-proof heat exchanger and application.When it can realize power-off pair
Pipeline progress is antifreeze, and cost is low, good freezing protection effect, it is easy to install.
2. technical scheme
The purpose of the present invention is achieved through the following technical solutions.
A kind of multistage inner tube winterization system, including outer tube, outer tube are provided with inner tube, and described inner tube is hollow bullet
Property flexible pipe, internal tube is provided with the cut-off of one or more.In the case of water flowing, the contraction frozen by inner tube is offset
The swelling volume of icing, prevents outer tube because icing increase causes rupture.The setting of cut-off causes inner tube to be set as in several
Empty position, when the situation of the damages such as rupture occurs for a position, remaining hollow part can play the swelling volume offset and frozen
Effect, security is good.
Further, described inner tube is silicone tube, rubber tube or pearl cotton pipe.Cost is low, easily makes.
Further, the sealing of described inner tube hollow part and gassy, this gas is air or inert gas, gas
Close property and watertightness are good, and inert gas security and stability is good.Inert gas can be nitrogen etc..
Inner tube non-tight, the hollow space close to connector is with managing outer air communication.
A kind of freeze-proof heat exchanger, including any of the above-described described outer tube and inner tube, wherein inner tube one end are anchor tip, separately
One end is sealed end, and anchor tip is fixed on outer tube, and sealed end stretches into outer tube.Anchor tip is to include connector, interior
Pipe sleeve is on connector, and connector is sealing or centre is connection, the connector of connection by inner tube in connector it is absolutely empty
Between be connected with outside air.
Further, the described side wall of outer tube one is provided with female through hole, and the anchor tip of inner tube is set
External screw thread is equipped with, and is matched with outer pipe through-hole internal thread.Inner tube is facilitated to be fixed, it is stable, and will not leak.
Further, sealed end is straight forming sealed end or is that hollow inner pipe end is plugged with sealing-plug.Can be with
Inner tube volume is facilitated to be compressed, it is ensured that relatively-stationary internal volume.
Further, inner tube exaggerated conditions in water freezing need to meet condition as follows：V1≧1/10V2, wherein V1For
Inner tube is badly deformed compressible volume, V1=(R2/2)2* wherein, R2 is inner tube inner hollow diameter to 3.14*L1, and L1 is inner tube length,
V2For outer tube volume, V2=(R3/2)2* 3.14*L2, R3 are outer tube diameter, and L2 is outer length of tube.Ensure compressible volume
The volume expanded more than ice, it is ensured that outer tube will not rupture.
Further, inner tube also needs to meet as follows：P1>P2, wherein P1Inner tube maximum of hoop stress, P2It is complete for inner tube
Full deformation design pressure, P1=P2D/2 δ, d are inner tube external diameter, and δ is inner tube wall thickness.It is right because internal tube shrinks volume needs control
It is also required to be limited in wall thickness.
Further, based on heat exchanger flow, caliber size also needs to meet:Q=CM △ T, wherein Q are heat exchanger system
Heat, C represents performance parameter 1.162, and M represents flow, and △ T represent that heat exchanger passes in and out water temperature difference, and flow M is M with caliber relation
=(V2-V1)/L1* (2/3) v1, v1For design current velocity.Because heat exchanger needs to control flow, the size of such inner hose is not
Can be too big, prevent flow too small, can not be too small, prevent that the volume of ice expansion can not be offset.
A kind of application of freeze-proof heat exchanger, includes air-conditioning, the heat pump of any of the above-described described freeze-proof heat exchanger.
3. beneficial effect
Compared to prior art, the advantage of the invention is that：
(1) this programme uses the inner tube that can be shunk as outer tube structure, and fault rate is small, in the case of water flowing,
The contraction frozen by inner tube, offsets the swelling volume frozen, prevents outer tube because icing increase causes rupture, it is not necessary to extraneous
There is provided heat antifreeze；The setting of cut-off causes inner tube to be set as several hollow parts, is damaged when rupture etc. occurs for a position
Situation, remaining hollow part can play the swelling volume effect offset and frozen, and security is good；
(2) inner tube that this programme is used is silicone tube, rubber tube or pearl cotton pipe, with good chemical stability and heat
Stability, air-tightness and watertightness are good, adapt to the water and thermal environment of heat exchanger, and cost is low, easily makes, simple in construction, processing
Cost is relatively low；
(3) this programme uses the inner tube full of inert gas, can only be influenceed by external pressure；Air-tightness and watertightness
Good, inert gas security and stability is good, and controllability is strong；
(4) this programme prevents double-tube heat exchanger because being frozen in pipe using a kind of freeze-proof heat exchanger, and causing water volume to expand makes
Double-tube heat exchanger bursting by freezing, damages whole unit, still has icing antifreeze function in heat pump main frame powering-off state, is heat pump master
Machine plays last one of antifreeze function；
(5) elastic hollow pipe meeting volume contraction when water body freezes has been used to avoid the increase of water body icing volume from causing sleeve pipe
Heat exchanger bursting by freezing, simple in construction, the anchor tip of inner tube is provided with external screw thread, and matches with outer pipe through-hole internal thread.Using
It is fast to twist straight-through locknut formula tab closure, when being installed, it is not moved, installs accurate, controllability is good, facilitates inner tube to carry out
It is fixed, it is stable, and will not leak；
(6) the elastic hollow pipe uses some similar materials such as silica gel, rubber, pearl cotton pipe, with good chemistry surely
Qualitative and heat endurance, air-tightness and watertightness are good, adapt to the water and thermal environment of heat exchanger；
(7) sealed end is straight forming sealed end or is that hollow inner pipe end is plugged with sealing-plug.Can disposably into
Type, can also can facilitate inner tube volume to be compressed, it is ensured that relatively-stationary internal volume according to demand in rear addition；
(8) limitation for inside and outside line size is passed through, it is ensured that compressible volume is more than the volume that ice expands, it is ensured that outer tube
It will not rupture, because heat exchanger needs to control flow, the size of such inner hose can not be too big, prevents flow too small, also not
Can be too small, prevent from that the volume of ice expansion can not be offset, it is ensured that being arranged within the scope of flow restriction for inner and outer pipes, smoothly enter
Row is antifreeze.
Brief description of the drawings
Fig. 1 is winterization system structural representation of the invention；
Fig. 2 is heat exchanger structure schematic diagram of the invention；
Fig. 3 is that anchor tip connects inner tube structure schematic diagram.
1st, outer tube；2nd, inner tube；201st, separate；3rd, sealed end；4th, anchor tip；401st, connector.
Embodiment
With reference to Figure of description and specific embodiment, the present invention is described in detail.
Embodiment 1
As shown in figure 1, a kind of multistage inner tube winterization system, including outer tube 1, outer tube 1 is internally provided with inner tube 2, described
Inner tube 2 is hollow elastic tube.Inner tube 2 is internally provided with the cut-off 201 of one or more, and elastic tube hollow space passes through tube wall
Isolate with outside liquid, such as outside is water, then outside water is due to the impermeable role of elastic pipeline, it is ensured that will not be entered interior
Portion hollow part, it is ensured that the space of hollow part, the setting of cut-off 201 causes inner tube to be set as several hollow parts, when
The situation of the damages such as rupture occurs for one position, and remaining hollow part can play the swelling volume effect offset and frozen, safety
Property is good.
Elastic hose herein can be flexible pipe, and inner tube 2 is conveniently penetrated in outer tube 1, can conformed to according to demand certainly
The other kinds of elastic pipeline asked, in the case of water flowing, the swelling volume frozen is offset in the contraction frozen by inner tube,
Outer tube is prevented because icing increase causes rupture, described inner tube 2 is silicone tube, rubber tube or pearl cotton pipe, and cost is low, easily
Make.The described hollow part of inner tube 2 is full of inert gas, and air-tightness and watertightness are good, and inert gas security and stability is good.
The hollow part of inner tube 2 is sealed and gassy, and this gas is air or inert gas；Cost when full of air
It is low, and be conveniently filled with, when the hollow part of inner tube 2 is full of inert gas, air-tightness and watertightness are good, inert gas security and stability
It is good.
The situation of the hollow part non-tight of inner tube 2 can also be selected, the inner tube 2 of non-tight passes through UNICOM in water inlet
Joint so that the air in inner tube 2 close to junction portion hollow space is with managing outer air communication.
This programme need not use powered heating system, prevent antifreeze to pipeline progress, phase is directly set in the duct
Answer the compressible flexible pipe of size all can complete twin conduit it is antifreeze, convenient and swift, cost is low.
Embodiment 2
Heat exchanger is generally used in heat pump or field of air conditioning refrigerant and water, when in defrosting, refrigeration and relatively low winter temperature,
It is likely to result in heat exchanger water side heat exchanger caused by water freezing volumetric expansion freezing.Increase the silica gel of inflation inside heat exchanger
Or compressible pearl cotton pipe and other similar materials.When inside heat exchanger water side because of icing volumetric expansion, compressible inflation
Silicone tube or pearl cotton pipe and other similar materials.The pressure for being subject to heat exchanger water side reduces, so as to prevent heat exchanger spalling.
Above-mentioned winterization system is used in field of heat exchangers, as shown in Fig. 2 concentric inner tube and the bushing type of outer tube composition
Heat exchanger, this is outer tube 1, and outer tube 1 sets a compressible hollow elasticity pipe of sealing, i.e. inner tube 2, and wherein one end of inner tube 2 is
Anchor tip 4, the other end is sealed end 3, and anchor tip 4 includes connector 401, and inner tube 2 is placed on connector 401, connector
401 be sealing, and anchor tip 4 is fixed on outer tube 1, and sealed end 3 is stretched into inside outer tube 1.Inner tube 2 is compressible hollow to seal
Silicone tube, inside is air or inert gas.Inert gas can ensure the stability of silica gel hollow tube, under circumstances
It will not damage, air-tightness and watertightness are good, gas is stable, will not be changed because of environmental change and other factors intervention,
Security and stability is good.Silicone tube herein can also be rubber tube or pearl cotton pipe.
The described side wall of outer tube 1 one is provided with female through hole, and the anchor tip 4 of inner tube 2 is provided with outer spiral shell
Line, and match with the through hole internal thread of outer tube 1.Form fast twist and lead directly to locknut formula tab closure, facilitate inner tube to be fixed, surely
It is fixed, and will not leak.
Sealed end 3 is straight forming sealed end or is that the hollow end of inner tube 2 is plugged with sealing-plug.Interior tube body can be facilitated
Product is compressed, it is ensured that relatively-stationary internal volume.The Tube Sheet of Heat Exchanger of this programme, the inner tube set by inside, passes through letter
The setting of single elastic compression so that water pipe will not deform upon and damaged said inner tube 2 offset it is swollen when heat exchanger water pipe freezes
Swollen volume, and flow required during heat exchange can be met.
Embodiment 3
Embodiment 3 is substantially the same manner as Example 2, and difference is, as shown in figure 3, anchor tip 4 includes connector
401, inner tube 2 is placed on connector 401, is connection in the middle of connector 401, and the connector 401 of connection is by inner tube 2 close to connector
401 hollow space is connected with outside air.Operation, under normal circumstances, inner tube 2 are little due to hydraulic pressure, inner tube 2
Because pipe is by some strength, middle part keeps hollow, close to the hollow air of the hollow space of connector 401 and outside sky
Gas UNICOM, when the water in temperature reduction, pipe is freezed, water increases due to icing volume, the volume extruding inner tube 2 of increase, interior
The air of pipe 2, by being eated dishes without rice or wine in connector 401, is discharged in air, inner tube 2 reduces, it is ensured that outer tube 1 will not be extruded.
The hollow space of remainder is each independent to keep sealing state due to the effect of cut-off, can offset the volume of expansion.When one
Individual part is damaged, and its mass action is not influenceed.
Embodiment 4
Because heat exchanger needs that flow and heat exchange amount are limited and ensured, the size and volume for inner and outer pipes are also needed
Set and limited accordingly, heat exchanger heat exchange amount and the abundance of flow could be met, moreover it is possible to ensure that the volume frozen reaches
To required requirement.The exaggerated conditions in water freezing of inner tube 2 need to meet condition as follows：V1≧1/10V2, wherein V1It is complete for inner tube
Compressible volume, V are deformed entirely1=(R2/2)2* wherein, R2 is the inner hollow diameter of inner tube 2 to 3.14*L1, and L1 is inner tube length, V2To be outer
The internal volume of pipe 1, V2=(R3/2)2* 3.14*L2, R3 are the internal diameter of outer tube 1, and L2 is the length of outer tube 1, and pipe thickness can be set
For H.
Inner tube 2 also needs to meet as follows：P1>P2, wherein P1Inner tube maximum of hoop stress, P2It is badly deformed design for inner tube 2
Pressure, P1=P2D/2 δ, d are the external diameter of inner tube 2, and δ is the wall thickness of inner tube 2.P1>P2In the case of when being tied completely in double pipe heat exchanger pipe
During ice, silica gel hollow tube can be badly deformed.Also need to meet：Q=CM △ T, wherein Q are heat exchanger heating capacity, and C represents performance
Parameter 1.162, C performance parameter 1.162 is determined according to the specific heat capacity of water, and the C values of different liquid herein are according to its liquid
The specific heat capacity of body is changed, and M represents flow, and △ T represent that heat exchanger passes in and out water temperature difference, and flow M is M=(V2- with caliber relation
V1)/L1*(2/3)v1, v1For design current velocity.△ T can be set as follows：△ T=5 DEG C, design of heat exchanger flow velocity can be with v1For
0.8-2m/s。
According to formula Q=CM △ T, M=(V2-V1)/L1* (2/3) v1, try to achieve whether v1 meets design current velocity, to sum up institute
Whether state external diameter Ф R1, inner hollow diameter Ф R2 silicone tube can meet Ф R3 double-tube heat exchangers.By for inner and outer pipes track forces
Very little limitation, it is ensured that compressible volume is more than the volume that ice expands, it is ensured that outer tube will not rupture, because heat exchanger needs controlling stream
Amount, the size of such inner hose can not be too big, prevents flow too small, can not be too small, prevents that the body of ice expansion can not be offset
Product, it is ensured that being arranged within the scope of flow restriction for inner and outer pipes, is smoothed out antifreeze.
Embodiment 5
A kind of freeze-proof heat exchanger manufacture method in embodiment 2-4, step is as follows：
A, outer tube 1 required according to the model determination of required double-tube heat exchanger length；
B, the outer tube diameter and hollow diameters for calculating according to the inwall caliber of outer tube 1 inner tube 2；
C, inner tube 2 is sealed into one end filled in along double pipe heat exchanger water inlet in heat exchanger water pipe, the other end passes through
Fast stubborn straight-through locknut formula anchor tip 4 is closed on copper pipe.Joint herein can be welded into required structure on outer tube 1.This
Place can be set as being fixed on the water inlet of double pipe heat exchanger.
Wherein, the elastic hose manufacture craft of inner tube 2 is as follows：
(1) cephalic par of silica gel hollow tube one for closing, can directly one-shot forming, sealing can also be filled in a cephalic par
Plug, it is ensured that it is sealed；
(2) an other cephalic par by twisting straight-through locknut formula tab closure soon；
By calculating the design with structure, it is ensured that double-tube heat exchanger is provided with telescopic inner tube 2, without electric situation
Still can simply and easily it carry out down antifreeze.
Embodiment 6
According to a kind of double pipe heat exchanger of embodiment 2-5 actual designs, wherein, inner tube 2 is silicone tube, in the centre of inner tube 2
Sky, hose size selection is as follows：The outside dimension of inner tube 2 is Ф 8mm；Inner hollow diameter：Ф 6mm, inner tube 2 and double pipe heat exchanger etc.
Long, length is 1000mm；Elastic hollow pipe is badly deformed compression volume：V1=(6/2)2* 3.14*1000=28260mm3；Sleeve pipe
Formula inner tube of heat exchanger caliber Ф 19mm, pipe thickness is H=1mm, design pressure P1=10MPa, then double pipe heat exchanger inner tube
Volume is：
V2=(19/2)2* 3.14*1000=226865mm3
Exaggerated conditions V when meeting water freezing1≧1/10V2；
Elastic hose maximum of hoop stress is P1=10MPa, i.e. design pressure circumference stress formula P1=P2D/2 δ (formula
Middle P2- be badly deformed design pressure, and d is silicone tube external diameter, and δ is silica gel thickness of pipe wall) P2=2.5MPa.
That is P1>P2, when being frozen completely in double pipe heat exchanger pipe, silica gel hollow tube can be badly deformed；
Heat exchanger heat and discharge relation：Q=CM △ T, flow and caliber relation：M=(V2-V1)/L* (2/3) v1, its
Middle Q represents heat exchanger heat, and design heat exchanger heating capacity is Q=5kw, and C represents performance parameter 1.162, and M represents flow, △ T
Represent heat exchanger turnover water temperature difference △ T=5 DEG C, design of heat exchanger flow velocity v1For 0.8-2m/s, design current velocity foundation herein is changed
The design specification of hot device is set, and needs to meet the occasion of cooling in other field, and design stream can be set according to demand
Speed；According to formula Q=CM △ T, M=(V2-V1)/L* (2/3) v1, try to achieve v1=1.98m/s meets design current velocity.In summary
External diameter Ф 8mm, inner hollow diameter Ф the 6mm silicone tube of inner tube 2 can meet Ф 19mm double-tube heat exchangers.This programme uses this inner tube
2 had both met the requirement of flow, it is ensured that heat exchange efficiency, in turn ensure that heat exchanger will not be bursting at the collision in the frozen state, security
It is good.
Embodiment 7
Winterization system and freeze-proof heat exchanger described in above-described embodiment 1-6, can apply to a variety of heat energy fields, Yi Zhongfang
Freeze the application of heat exchanger, include the use of air-conditioning, the heat pump of the freeze-proof heat exchanger of this programme.
Schematically the invention and embodiments thereof are described above, the description does not have restricted, not
In the case of the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Institute in accompanying drawing
What is shown is also one of embodiment of the invention, and actual structure is not limited thereto, any attached in claim
Icon note should not limit involved claim.So, if one of ordinary skill in the art is enlightened by it, do not departing from
In the case of this creation objective, the frame mode similar to the technical scheme and embodiment are designed without creative, all should
Belong to the protection domain of this patent.In addition, the word of " comprising " one is not excluded for other elements or step, the word of " one " one before element
It is not excluded for including " multiple " element.The multiple element stated in claim to a product can also by an element by software or
Person hardware is realized.The first, the second grade word is used for representing title, and is not offered as any specific order.
Claims (10)
1. a kind of multistage inner tube winterization system, including outer tube (1), it is characterised in that：Outer tube (1) is internally provided with inner tube (2), institute
The inner tube (2) stated is hollow elastic tube, and inner tube (2) is internally provided with the cut-off (201) of one or more.
2. a kind of multistage inner tube winterization system according to claim 1, it is characterised in that：Described inner tube (2) is silica gel
Pipe, rubber tube or pearl cotton pipe.
3. a kind of multistage inner tube winterization system according to claim 1, it is characterised in that：Described inner tube (2) hollow bulb
Position sealing and gassy.This gas is air or inert gas；
Inner tube (2) non-tight, the hollow space close to connector (401) is with managing outer air communication.
4. a kind of freeze-proof heat exchanger, it is characterised in that：Including any described outer tubes (1) of claim 1-3 and inner tube (2), its
Middle inner tube (2) one end is anchor tip (4), and the other end is sealed end (3), and anchor tip (4) is fixed on outer tube (1), closed
It is internal that outer tube (1) is stretched at end (3)；Anchor tip (4) includes connector (401), and inner tube (2) is placed on connector (401), connects
Mouthful (401) are sealing or centre is connection, the connector (401) of connection by inner tube (2) close to connector (401) hollow space
It is connected with outside air.
5. a kind of freeze-proof heat exchanger according to claim 5, it is characterised in that：The described side wall of outer tube (1) one is set
Have with female through hole, the anchor tip (4) of inner tube (2) is provided with external screw thread, and with outer tube (1) through hole internal thread phase
Match somebody with somebody.
6. a kind of freeze-proof heat exchanger according to claim 5, it is characterised in that：The sealed end (3) is that straight forming is close
End-blocking is plugged with sealing-plug for hollow inner tube (2) end.
7. a kind of freeze-proof heat exchanger according to claim 4, it is characterised in that：Said inner tube (2) expands in water freezing
Condition needs to meet condition as follows：V1≧1/10V2, wherein V1It is badly deformed compressible volume, V for inner tube1=(R2/2)2*
Wherein, R2 is inner tube (2) inner hollow diameter to 3.14*L1, and L1 is inner tube length, V2For outer tube (1) internal volume, V2=(R3/2)2*
3.14*L2, R3 are outer tube (1) internal diameter, and L2 is outer tube (1) length.
8. a kind of freeze-proof heat exchanger according to claim 7, it is characterised in that：Said inner tube (2) also needs to meet as follows：
P1>P2, wherein P1For inner tube maximum of hoop stress, P2It is badly deformed design pressure, P for inner tube (2)1=P2D/2 δ, d are inner tube
(2) external diameter, δ is inner tube (2) wall thickness.
9. a kind of freeze-proof heat exchanger according to claim 8, it is characterised in that：Based on heat exchanger flow, caliber size is also
Need to meet:Q=CM △ T, wherein Q are heat exchanger heating capacity, and C represents performance parameter 1.162, and M represents flow, and △ T represent to change
Hot device passes in and out water temperature difference, and flow M is M=(V2-V1)/L1* (2/3) v with caliber relation1, v1For design current velocity.
10. a kind of application of freeze-proof heat exchanger, it is characterised in that：Include any described freeze-proof heat exchangers of claim 4-9
Air-conditioning, heat pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392426.XA CN106989541A (en) | 2017-05-27 | 2017-05-27 | A kind of multistage inner tube winterization system, freeze-proof heat exchanger and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392426.XA CN106989541A (en) | 2017-05-27 | 2017-05-27 | A kind of multistage inner tube winterization system, freeze-proof heat exchanger and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106989541A true CN106989541A (en) | 2017-07-28 |
Family
ID=59420181
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710392426.XA Pending CN106989541A (en) | 2017-05-27 | 2017-05-27 | A kind of multistage inner tube winterization system, freeze-proof heat exchanger and application |
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| Country | Link |
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| CN (1) | CN106989541A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678943A (en) * | 2018-08-03 | 2018-10-19 | 台州市路桥高远日用金属制品厂 | A kind of frost crack proof device of water pump |
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| CN105547016A (en) * | 2016-01-20 | 2016-05-04 | 马鞍山市博浪热能科技有限公司 | Anti-freezing device for double-pipe heat exchanger and manufacturing method of anti-freezing device |
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| CN2823344Y (en) * | 2005-05-18 | 2006-10-04 | 华群 | Defroster |
| CN202597934U (en) * | 2012-03-23 | 2012-12-12 | 梁强 | Water pipe with frost burst prevention function |
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| CN108678943A (en) * | 2018-08-03 | 2018-10-19 | 台州市路桥高远日用金属制品厂 | A kind of frost crack proof device of water pump |
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Application publication date: 20170728 |