CN109764698A - Liquid nitrogen refrigerant heat exchanger and its application method - Google Patents
Liquid nitrogen refrigerant heat exchanger and its application method Download PDFInfo
- Publication number
- CN109764698A CN109764698A CN201910145478.6A CN201910145478A CN109764698A CN 109764698 A CN109764698 A CN 109764698A CN 201910145478 A CN201910145478 A CN 201910145478A CN 109764698 A CN109764698 A CN 109764698A
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- heat exchanger
- liquid nitrogen
- shell
- exchanger tube
- supporting clapboard
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 67
- 239000003507 refrigerant Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 230000008676 import Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 229960004756 ethanol Drugs 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 229940082500 cetostearyl alcohol Drugs 0.000 claims description 4
- -1 cetostearyl alcohol palmitates Chemical class 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- OULAJFUGPPVRBK-UHFFFAOYSA-N tetratriacontyl alcohol Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCO OULAJFUGPPVRBK-UHFFFAOYSA-N 0.000 claims description 4
- 238000000861 blow drying Methods 0.000 claims description 3
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011257 shell material Substances 0.000 claims 13
- 206010013786 Dry skin Diseases 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000012546 transfer Methods 0.000 abstract description 8
- 230000004907 flux Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-M hexadecanoate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- UPBDXRPQPOWRKR-UHFFFAOYSA-N furan-2,5-dione;methoxyethene Chemical compound COC=C.O=C1OC(=O)C=C1 UPBDXRPQPOWRKR-UHFFFAOYSA-N 0.000 description 1
- UBHWBODXJBSFLH-UHFFFAOYSA-N hexadecan-1-ol;octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO.CCCCCCCCCCCCCCCCCCO UBHWBODXJBSFLH-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Abstract
The present invention relates to technical field of heat exchangers, a kind of liquid nitrogen refrigerant heat exchanger and its application method are disclosed, including enclosure interior is separated into inner cavity and inlet channel by shell, supporting clapboard, supporting clapboard, inner cavity lower end is connected with inlet channel lower end；It is provided in shell positioned at interior intracavitary heat exchanger tube, supporting clapboard is provided with the through-hole passed through for heat exchanger tube；Liquid nitrogen refrigerant heat exchanger further includes inlet exhaust gas, offgas outlet, leakage fluid dram.The present invention has the following advantages and effects: finned tube is used, heat exchange area is big, and the coefficient of heat transfer is high, is suitble to gas converting heat.Heat exchanger tube can be single tube, and arranged stacked after can also being connected with multitube facilitates intraluminal fluid nitrogen to be distributed, convenient for heat exchange.Interior intracavitary setting baffle plate one and baffle plate two reinforce gas turbulence, increase heat transfer effect.The liquid nitrogen import of heat exchanger tube, nitrogen outlet are located at shell the same side, and heat exchanger tube is not welded and fixed with supporting clapboard, few with shell contact point, reduce stress conflict, have many advantages, such as that flux is big, heat exchange is fast, stress is small, flexible layout, is not easy to plug.
Description
Technical field
The invention belongs to technical field of heat exchangers, in particular to a kind of liquid nitrogen refrigerant heat exchanger and its application method.
Technical background
The a small amount of low boiling point low melting point solvent contained in fixed gas, such as methanol, methylene chloride, low-carbon hydro carbons, when recycling
It needs to be recycled by condensing.Liquid nitrogen, that is, liquid nitrogen, liquid nitrogen temperature is -196 DEG C under normal pressure, and when vaporization largely inhales
Temperature when being used as cooling medium, can be reduced to -100 DEG C hereinafter, for ideal cooling medium by heat.
The Chinese patent application that publication No. is CN107940574A discloses a kind of liquid nitrogen cooling and dehumidifying device, including heat exchange
Device, heat exchanger include liquid nitrogen heat exchanger tube, liquid collecting room, liquid nitrogen inlet tube, the setting of liquid nitrogen heat exchanger tube vertical setting of types.Vertical pipe is in low temperature
Self-constriction ability is poor under operating condition, and the stress of generation be easy to cause heat exchanger tube and other component to disengage, and causes equipment fault, influences
Equipment operates normally.
Summary of the invention
The object of the present invention is to provide a kind of liquid nitrogen refrigerant heat exchanger, have the effect of that heat exchange is fast, stress is small.
Above-mentioned technical purpose of the invention has the technical scheme that liquid nitrogen refrigerant heat exchanger, including
Shell is set to the intracorporal supporting clapboard of the shell, and the enclosure interior is separated into inner cavity to the supporting clapboard and air inlet is led to
Road, the inner cavity lower end are connected with the inlet channel lower end；It is provided in the shell positioned at the interior intracavitary heat exchange
Pipe, the supporting clapboard are provided with the through-hole passed through for the heat exchanger tube；Liquid nitrogen refrigerant heat exchanger further includes logical with the air inlet
Inlet exhaust gas that road is connected, the offgas outlet being connected with the inner cavity upper end, the leakage fluid dram being set on the shell.
By using above-mentioned technical proposal, the enclosure interior of liquid nitrogen refrigerant heat exchanger be supported partition be separated into inner cavity and into
Gas channel, cooled medium enter in inlet channel from inlet exhaust gas, and flow downward along inlet channel, enter inner cavity
It is interior, and heat exchanger tube is touched, liquid nitrogen is flowed into from the liquid nitrogen import of heat exchanger tube, cold by flowing out after heat exchanger tube from nitrogen outlet
But medium contacts concurrent heat exchange with heat exchanger tube, and the low boiling point low melting point in cooled medium is condensed into after liquid under
Collect, is discharged from leakage fluid dram.
Heat exchanger tube is horizontally disposed can to use single tube, can also use multitube parallel, touring arrangement is laminated, facilitates in pipe
Liquid nitrogen distribution；Heat-dissipating pipe passes through the through-hole on supporting clapboard, is not welded and fixed between supporting clapboard, makes heat exchanger tube, branch
There is no internal stress conflict between support partition, has achieved the effect that heat exchange is fast, stress is small
The further setting of the present invention are as follows: described heat exchanger tube one end is liquid nitrogen import and the other end is nitrogen outlet, described
Liquid nitrogen import and the nitrogen outlet are located at described shell the same side.
By using above-mentioned technical proposal, heat exchanger tube and shell contact point are few, and inside is only in contact with supporting clapboard, reduce
Internal stress between heat exchanger tube and other component conflicts.
The further setting of the present invention are as follows: the inner walls are provided with baffle plate one, and the supporting clapboard is provided with folding
Flowing plate two.
By using above-mentioned technical proposal, baffle plate one is arranged in inner walls, and supporting clapboard is provided with baffle plate two, reinforces
Gas turbulence increases heat transfer effect.
The further setting of the present invention are as follows: the supporting clapboard upper end is slideably positioned in the horizontal direction in the shell
Wall.
By using above-mentioned technical proposal, supporting clapboard is adjusted in the sliding of shell, can adjust intracavity space and folding
The gap of flowing plate two and inner walls, and then the intracavitary residence time including cooled medium can be adjusted as needed, raising is changed
Thermal effect.
The further setting of the present invention are as follows: the installing port passed through for the baffle plate two is provided on the supporting clapboard,
The locating rod for being provided with regulating part, being set on the regulating part, the folding are above slided on the supporting clapboard along the vertical direction
Multiple location holes for locating rod insertion are provided in flowing plate two.
Baffle plate is adjusted after adjusting regulating part rising drive locating rod disengaging location hole by using above-mentioned technical proposal
Two with the gaps of inner walls, the intracavitary residence time including cooled medium can be adjusted as needed.
The further setting of the present invention are as follows: inclined bottom plate is provided in the shell, what the bottom plate was used to condense
Liquid guide flow is to leakage fluid dram.
The further setting of the present invention are as follows: heating tube is provided in the shell, described heating tube one end is hot water inlet
And the other end is hot water outlet.
By using above-mentioned technical proposal, heating tube is set in shell, is used for regular defrost.
The further setting of the present invention are as follows: the heat exchanger tube is finned tube, and the housing sidewall is provided with visor, the shell
Body upper end is provided with spare mouth.
By using above-mentioned technical proposal, finned tube heat exchange area is big, and the coefficient of heat transfer is high, suitable gas converting heat, on shell
Visor is installed, enclosure interior frosting situation is checked when to run.
The further setting of the present invention are as follows: the heat exchanger tube and the enclosure material are 304 stainless steels, the heat exchanger tube
Outer wall is provided with coating, and the coating production is as follows, step 1, by the pipe surface grinding process that exchanges heat；Step 2, chemistry are rotten
Erosion, the heat exchanger tube after polishing is placed in the HF solution of 40wt% and corrodes 30min, HF solution maintains the temperature at 30-35 DEG C；Step
Three, it prepares decorating liquid and takes 40 parts of ethyl alcohol, 15-25 parts of Gantrez AN-119 butyl esters, 5-15 parts of cetearyl alcohols in terms of mass fraction
Alcohol palmitate, 7-10 part carboxymethyl cellulose are uniformly mixed, and obtain decorating liquid；Step 4 is cleaned and dried, after taking chemical attack
Heat exchanger tube, cleaned with deionized water, dehydrated alcohol, with dry air blow drying after cleaning；Step 5, modification, will change
Heat pipe is placed in decorating liquid, and for adjustment temperature to 35-40 DEG C, constant temperature impregnates 2h；Step 6, drying, the heat exchanger tube after modification is set
It is dry in baking oven, 120 DEG C of constant temperature drying 2h are heated to, so that heat exchange pipe outer wall forms coating.
By using above-mentioned technical proposal, in the process of running, the moisture in cooled medium can also be condensed into water, when cold
Condensate will affect heat transfer effect after heat exchange pipe outer wall freezes.To realize that heat exchange pipe surface is ice-covering-proof, formed in heat exchange pipe outer wall
Ice-covering-proof coating after heat exchanger tube is polished first, with HF solution corrosion, removes the oxidation film of heat exchange pipe surface, then prepare and repair
Adorn liquid, dried after being modified with decorating liquid, Gantrez AN-119 butyl ester, cetostearyl alcohol palmitate, carboxymethyl cellulose it is mixed
The coating that object is formed in heat exchange pipe surface is closed, the hydrophobic performance of heat exchange pipe surface can not only be improved, reduce roll angle, improve contact
Angle, moreover it is possible to play the phase transformation for inhibiting water, and ice adhesion is small, greatly improve the ice-covering-proof ability of heat exchanger tube, reduce liquid nitrogen
Heat exchange pipe surface freezes when refrigerant heat exchanger is run.
The object of the invention is also to provide a kind of application methods of liquid nitrogen refrigerant heat exchanger, and liquid nitrogen is led from liquid nitrogen import
Enter, until liquid nitrogen is flowed out from nitrogen outlet, cooled medium is passed through from inlet exhaust gas, until the low-boiling-point substance in cooled medium
It is pooled on bottom plate after being condensed into liquid, and flows into leakage fluid dram along bottom plate.
The beneficial effects of the present invention are:
1, heat exchanger tube uses finned tube, and heat exchange area is big, and the coefficient of heat transfer is high, is suitble to gas converting heat.
2, heat exchanger tube can be single tube, arranged stacked after can also being connected with multitube, according to demand flexible design, and heat exchanger tube
Using being horizontally arranged, stacking is touring, and intraluminal fluid nitrogen is facilitated to be distributed, convenient for heat exchange.
3, shell uses squared design, facilitates heat exchanger tube arrangement and cold and hot stress release.
4, baffle plate one and baffle plate two are set, gas turbulence is reinforced, increases heat transfer effect.
5, the liquid nitrogen import of heat exchanger tube, nitrogen outlet are located at shell the same side, and heat exchanger tube is not welded with supporting clapboard
Fixation is connect, it is few with shell contact point, there is no internal stress conflict between heat exchanger tube, supporting clapboard.
6, heating tube is arranged in housing bottom, is used for regular defrost；
7, cooled medium circulates inside housings, only inlet exhaust gas, offgas outlet, and inside does not have sealing structure, no
There are leakage points.
8, visor is installed in housing sidewall, internal frosting situation is checked when to run.
9, shell, heat exchanger tube material are 304 stainless steels.
10, liquid nitrogen refrigerant heat exchanger has many advantages, such as that flux is big, heat exchange is fast, stress is small, flexible layout, is not easy to plug.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of embodiment 1.
Fig. 2 is the supporting clapboard structural schematic diagram of embodiment 1.
Fig. 3 is the connection relationship diagram of the supporting clapboard of embodiment 1, baffle plate two.
Fig. 4 is the heating-pipe structure schematic diagram of embodiment 1.
In figure, 1, shell；11, inner cavity；12, inlet channel；13, inlet exhaust gas；14, offgas outlet；15, leakage fluid dram；16,
Spare mouth；17, baffle plate one；2, supporting clapboard；21, through-hole；22, baffle plate two；221, location hole；23, installing port；24, it adjusts
Save part；25, locating rod；3, heat exchanger tube；31, liquid nitrogen import；32, nitrogen outlet；4, bottom plate；5, heating tube；51, hot water inlet；
52, hot water outlet；53, U-shaped anchor ear；6, thermometer mouth；7, visor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1: liquid nitrogen refrigerant heat exchanger, as shown in Figure 1 and Figure 2, including shell 1, the supporting clapboard in shell 1
2, shell 1 includes lower plate, the side plate for being fixed on lower plate surrounding, the top plate being fixed on side plate, lower plate, the side plate shape side of being
Shape.Supporting clapboard 2 will be separated into inner cavity 11 and inlet channel 12,12 lower end phase of 11 lower end of inner cavity and inlet channel inside shell 1
Connection.Heat exchanger tube 3 is provided in shell 1, heat exchanger tube 3 is finned tube, and heat exchanger tube 3 is horizontally disposed and is located in inner cavity 11.It changes
One end of heat pipe 3 is liquid nitrogen import 31, and the other end is nitrogen outlet 32, is provided with multiple through-holes 21, heat exchanger tube on supporting clapboard 2
3 are provided with multilayer and arranged stacked, and through-hole 21 is passed through for heat exchanger tube 3.
As shown in Figure 1, being additionally provided with the inlet exhaust gas 13 being connected with inlet channel 12 and 11 upper end of inner cavity on shell 1
The offgas outlet 14 being connected, cooled medium enters inlet channel 12 from inlet exhaust gas 13, then enters from inlet channel 12
To inner cavity 11, by being discharged again from offgas outlet 14 when inner cavity 11 and after 3 heat exchange of heat exchanger tube, the low boiling point in cooled medium
Collect after low melting point condensation under.Bottom in shell 1 is additionally provided with inclined bottom plate 4, the setting of 1 bottom side of the wall of shell
There is leakage fluid dram 15, the liquid of condensation is pooled on bottom plate 4, is flowed to leakage fluid dram 15 along bottom plate 4 and is discharged.1 upper end of shell is additionally provided with
The spare mouth 16 being connected with inner cavity 11,1 side wall of shell is provided with thermometer mouth 6, for installing thermometer.
As shown in Figure 1,1 inner wall of shell is provided with baffle plate 1, baffle plate 2 22, baffling are provided on supporting clapboard 2
Plate 1 and baffle plate 2 22 are respectively positioned in inner cavity 11 and horizontally disposed.Baffle plate 1 and baffle plate 2 22 are located at heat exchanger tube 3
Each layer between, for reinforcing cooled medium turbulent flow, increase heat transfer effect.
As shown in Figure 1, Figure 3,1 upper end inner wall of shell is provided with two horizontal T-slots, and 2 threaded upper ends of supporting clapboard connect
It connects there are two T-slot bolt, T-slot is embedded in T-slot with bolt head, keeps supporting clapboard 2 sliding relative to shell 1
It is dynamic, installing port 23 is provided on supporting clapboard 2, baffle plate 2 22 passes through installing port 23.It is multiple fixed to be provided on baffle plate 2 22
Position hole 221, multiple location holes 221 are distributed along baffle plate length direction.Sliding is provided with adjusting along the vertical direction on supporting clapboard 2
Part 24, locating rod 25 is fixed on regulating part 24, and locating rod 25 is inserted into location hole 221.When adjusting the movement of supporting clapboard 2,
The size of inner cavity 11 and the gap of baffle plate 2 22 and 1 inner wall of shell can be adjusted, including capable of adjusting cooled medium as needed
The time being detained in chamber 11 can adjust baffle plate 2 22 and transport after pulling regulating part 24 that locating rod 25 is driven to be detached from location hole 221
The dynamic gap to adjust baffle plate 2 22 Yu 1 inner wall of shell, can also adjust the time that cooled medium is detained in inner cavity 11, to
Lower promotion regulating part 24 drives locating rod 25 to be inserted into location hole 221, and the position of baffle plate 2 22 is fixed.
As shown in Figure 3, Figure 4,1 side wall of shell is also equipped with visor 7, for observing frosting situation in shell 1.In shell 1
It is additionally provided with the heating tube 5 for being located at 3 lower section of heat exchanger tube, 3 lower section of heat exchanger tube is located in the middle part of heating tube 5, both ends are pierced by shell respectively
1, one end is hot water inlet 51, and other end hot water outlet 52, heating tube 5 is for defrost.Pass through U-shaped anchor ear 53 in the middle part of heating tube 5
It is hung on supporting clapboard 2.
Shell 1,3 material of heat exchanger tube are 304 stainless steels.3 outer wall of heat exchanger tube is additionally provided with coating, and coating is for putting icing.
The preparation method of coating is as follows, step 1, by 3 surface grinding process of heat exchanger tube；Step 2, chemical attack, by changing after polishing
Heat pipe 3, which is placed in the HF solution of 40wt%, corrodes 30min, and HF solution maintains the temperature at 30 DEG C；Step 3 prepares decorating liquid, with
Mass fraction meter takes 40 parts of ethyl alcohol, 15 parts of Gantrez AN-119 butyl esters, 5 parts of cetostearyl alcohol palmitates, 7 parts of carboxymethyl fibres
Dimension element is uniformly mixed, and obtains decorating liquid；Step 4 is cleaned and dried, the heat exchanger tube 3 after taking chemical attack, with deionized water, anhydrous
Ethyl alcohol is cleaned, with dry air blow drying after cleaning；Step 5, modification, heat exchanger tube 3 is placed in decorating liquid, adjustment temperature
For degree to 35 DEG C, constant temperature impregnates 2h；Heat exchanger tube 3 after modification is placed in drying in baking oven, is heated to 120 DEG C of perseverances by step 6, drying
Temperature drying 2h, so that 3 outer wall of heat exchanger tube forms coating.
The application method of liquid nitrogen refrigerant heat exchanger: liquid nitrogen is imported from liquid nitrogen import 31, until liquid nitrogen is from nitrogen outlet 32
Outflow, cooled medium is passed through from inlet exhaust gas 13, until the low-boiling-point substance in cooled medium is pooled to after being condensed into liquid
On bottom plate 4, and leakage fluid dram 15 is flowed into along bottom plate 4.
Embodiment 2: liquid nitrogen refrigerant heat exchanger, the difference from embodiment 1 is that, the preparation method of coating is as follows, step 1,
To exchange heat pipe surface grinding process；Heat exchanger tube after polishing is placed in the HF solution of 40wt% and corrodes by step 2, chemical attack
30min, HF solution maintain the temperature at 35 DEG C；Step 3 prepares decorating liquid and takes 40 parts of ethyl alcohol, 25 parts of PVM/ in terms of mass fraction
MA copolymer butyl ester, 15 parts of cetostearyl alcohol palmitates, 10 parts of carboxymethyl celluloses are uniformly mixed, and obtain decorating liquid；Step
Four, it is cleaned and dried, the heat exchanger tube after taking chemical attack is cleaned with deionized water, dehydrated alcohol, with dry sky after cleaning
Air-blowing is dry；Step 5, modification, heat exchanger tube is placed in decorating liquid, and for adjustment temperature to 40 DEG C, constant temperature impregnates 2h；Step 6 is dried
It is dry, the heat exchanger tube after modification is placed in drying in baking oven, is heated to 120 DEG C of constant temperature drying 2h, so that heat exchange pipe outer wall is formed and applied
Layer.
Coating performance test: 3 piece of 304 stainless steel steel disc is taken, the coating production in 1 piece of reference implementation example 1 is prepared
Containing cated stainless steel steel disc, 1 piece of reference implementation example, 2 weeks coating productions are prepared containing cated stainless steel steel
Piece, 1 piece as a control group.
Angle test is contradicted, with angle measuring instrument is contradicted, takes 3 differences to measure on each stainless steel steel disc surface and takes
The average value of its measured value, the deionized water that measurement is 5ml with drop list 3 pieces of test results in table 1.
Dynamic ice experiment: above-mentioned 3 pieces of stainless steel steel discs are taken, are placed in -5 DEG C of refrigerators, stainless steel steel disc tilt angle is
It 30 degree, takes infusion bag to inject deionized water, and install perfusion tube, adjusts water droplet drop speed as 2 drops/sec and drop onto stainless steel steel disc
On, the ice condition on 3 pieces of stainless steel steel discs is observed after 20min, and result is listed in table 1
1 coating performance test result of table
By the data of table 1 it is found that coating in embodiment 1 and embodiment 2, can be greatly improved dredging for 304 stainless steels
Aqueous energy and anti-icing performance.
Claims (10)
1. liquid nitrogen refrigerant heat exchanger, it is characterised in that: including shell (1), the supporting clapboard (2) being set in the shell (1),
The supporting clapboard (2) will be separated into inner cavity (11) and inlet channel (12), inner cavity (11) lower end inside the shell (1)
It is connected with the inlet channel (12) lower end；The heat exchanger tube in the inner cavity (11) is provided in the shell (1)
(3), the supporting clapboard (2) is provided with the through-hole (21) passed through for the heat exchanger tube (3)；Liquid nitrogen refrigerant heat exchanger further include with
Inlet exhaust gas (13) that the inlet channel (12) is connected, the offgas outlet (14) being connected with the inner cavity (11) upper end,
The leakage fluid dram (15) being set on the shell (1).
2. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: described heat exchanger tube (3) one end be liquid nitrogen into
Mouthful (31) and the other end are nitrogen outlet (32), and the liquid nitrogen import (31) and the nitrogen outlet (32) are located at the shell
(1) the same side.
3. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: shell (1) inner wall is provided with baffling
Plate one (17), the supporting clapboard (2) are provided with baffle plate two (22).
4. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: supporting clapboard (2) upper end edge is horizontal
Direction is slideably positioned in the shell (1) inner wall.
5. liquid nitrogen refrigerant heat exchanger according to claim 3, it is characterised in that: be provided with confession on the supporting clapboard (2)
The installing port (23) that the baffle plate two (22) passes through, upper sliding is provided with adjusting along the vertical direction on the supporting clapboard (2)
Part (24), the locating rod (25) being set on the regulating part (24) are provided with described in multiple confessions on the baffle plate two (22)
The location hole (221) of locating rod (25) insertion.
6. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: be provided in the shell (1) inclined
Bottom plate (4), the liquid guide flow that the bottom plate (4) is used to condense to leakage fluid dram (15).
7. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: be provided with heating tube in the shell (1)
(5), described heating tube (5) one end is hot water inlet (51) and the other end is hot water outlet (52).
8. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: the heat exchanger tube (3) is finned tube, described
Shell (1) side wall is provided with visor (7), and shell (1) upper end is provided with spare mouth (16).
9. liquid nitrogen refrigerant heat exchanger according to claim 1, it is characterised in that: the heat exchanger tube (3) and the outer shell material
Matter is 304 stainless steels, and heat exchanger tube (3) outer wall is provided with coating, and the coating production is as follows, step 1, will change
Heat pipe (3) surface grinding process；Heat exchanger tube (3) after polishing is placed in the HF solution of 40wt% rotten by step 2, chemical attack
30min is lost, HF solution maintains the temperature at 30-35 DEG C；Step 3 prepares decorating liquid and takes 40 parts of ethyl alcohol, 15- in terms of mass fraction
25 parts of PVM/MA copolymer butyl esters, 5-15 parts of cetostearyl alcohol palmitates, 7-10 parts of carboxymethyl celluloses are uniformly mixed, and are obtained
To decorating liquid；Step 4 is cleaned and dried, and the heat exchanger tube (3) after taking chemical attack is cleaned with deionized water, dehydrated alcohol,
With dry air blow drying after cleaning；Step 5, modification, heat exchanger tube (3) is placed in decorating liquid, adjust temperature to 35-40 DEG C,
Constant temperature impregnates 2h；Heat exchanger tube (3) after modification is placed in drying in baking oven, is heated to 120 DEG C of constant temperature dryings by step 6, drying
2h, so that heat exchanger tube (3) outer wall forms coating.
10. the application method of liquid nitrogen refrigerant heat exchanger, it is characterised in that: import liquid nitrogen from liquid nitrogen import (31), until liquid nitrogen
It is flowed out from nitrogen outlet (32), cooled medium is passed through from inlet exhaust gas (13), until the low-boiling-point substance in cooled medium is cold
It is pooled on bottom plate (4) after congealing into liquid, and flows into leakage fluid dram (15) along bottom plate (4).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112895A (en) * | 2021-04-19 | 2021-07-13 | 西安交通大学 | Electromagnetic induction heating gas heat exchange experimental device |
| CN113125498A (en) * | 2021-04-19 | 2021-07-16 | 西安交通大学 | Direct current heating single-channel gas heat exchange experimental device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294049A (en) * | 2002-11-26 | 2004-10-21 | Daikin Ind Ltd | Air heat exchanger and refrigerating apparatus |
| CN200955921Y (en) * | 2006-09-15 | 2007-10-03 | 韩军 | Heat exchanger |
| CN102549079A (en) * | 2009-09-25 | 2012-07-04 | 株式会社神户制钢所 | Resin composition exhibiting high performance in terms of inhibition of ice and frost formation, and laminated metal plate on which an ice/frost-formation inhibition layer is formed |
| CN203053273U (en) * | 2012-12-31 | 2013-07-10 | 上海远跃制药机械股份有限公司 | Double-tube-plate U-shaped heat exchanger |
| CN103673683A (en) * | 2013-12-30 | 2014-03-26 | 张家港市江南锅炉压力容器有限公司 | Multi-shell-pass recycle gas condenser |
| CN106257274A (en) * | 2016-07-12 | 2016-12-28 | 东南大学 | A kind of tubule bundle surface ultralow temperature frosting control method and device thereof |
| CN106482549A (en) * | 2016-10-21 | 2017-03-08 | 珠海格力电器股份有限公司 | A kind of full-liquid type case tube heat exchanger and the air-conditioner with it |
| CN106546111A (en) * | 2016-12-12 | 2017-03-29 | 北京广厦环能科技股份有限公司 | A kind of shell-and-tube heat exchanger |
| CN106807105A (en) * | 2015-12-02 | 2017-06-09 | 中国科学院大连化学物理研究所 | A kind of device and method containing iodine gas purification |
| CN107014229A (en) * | 2017-06-13 | 2017-08-04 | 山东农业大学 | A kind of sewage heat exchanger |
| CN107514842A (en) * | 2016-06-17 | 2017-12-26 | 杭州三花家电热管理系统有限公司 | A kind of heat exchanger |
| CN206959656U (en) * | 2017-07-04 | 2018-02-02 | 西南石油大学 | A kind of heat exchange gas device |
| CN209689430U (en) * | 2019-02-27 | 2019-11-26 | 浙江阿尔法化工科技有限公司 | Liquid nitrogen refrigerant heat exchanger |
-
2019
- 2019-02-27 CN CN201910145478.6A patent/CN109764698B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294049A (en) * | 2002-11-26 | 2004-10-21 | Daikin Ind Ltd | Air heat exchanger and refrigerating apparatus |
| CN200955921Y (en) * | 2006-09-15 | 2007-10-03 | 韩军 | Heat exchanger |
| CN102549079A (en) * | 2009-09-25 | 2012-07-04 | 株式会社神户制钢所 | Resin composition exhibiting high performance in terms of inhibition of ice and frost formation, and laminated metal plate on which an ice/frost-formation inhibition layer is formed |
| CN203053273U (en) * | 2012-12-31 | 2013-07-10 | 上海远跃制药机械股份有限公司 | Double-tube-plate U-shaped heat exchanger |
| CN103673683A (en) * | 2013-12-30 | 2014-03-26 | 张家港市江南锅炉压力容器有限公司 | Multi-shell-pass recycle gas condenser |
| CN106807105A (en) * | 2015-12-02 | 2017-06-09 | 中国科学院大连化学物理研究所 | A kind of device and method containing iodine gas purification |
| CN107514842A (en) * | 2016-06-17 | 2017-12-26 | 杭州三花家电热管理系统有限公司 | A kind of heat exchanger |
| CN106257274A (en) * | 2016-07-12 | 2016-12-28 | 东南大学 | A kind of tubule bundle surface ultralow temperature frosting control method and device thereof |
| CN106482549A (en) * | 2016-10-21 | 2017-03-08 | 珠海格力电器股份有限公司 | A kind of full-liquid type case tube heat exchanger and the air-conditioner with it |
| CN106546111A (en) * | 2016-12-12 | 2017-03-29 | 北京广厦环能科技股份有限公司 | A kind of shell-and-tube heat exchanger |
| CN107014229A (en) * | 2017-06-13 | 2017-08-04 | 山东农业大学 | A kind of sewage heat exchanger |
| CN206959656U (en) * | 2017-07-04 | 2018-02-02 | 西南石油大学 | A kind of heat exchange gas device |
| CN209689430U (en) * | 2019-02-27 | 2019-11-26 | 浙江阿尔法化工科技有限公司 | Liquid nitrogen refrigerant heat exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113112895A (en) * | 2021-04-19 | 2021-07-13 | 西安交通大学 | Electromagnetic induction heating gas heat exchange experimental device |
| CN113125498A (en) * | 2021-04-19 | 2021-07-16 | 西安交通大学 | Direct current heating single-channel gas heat exchange experimental device |
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|---|---|
| CN109764698B (en) | 2024-01-05 |
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