CN111744337A - Capillary water absorption column assembly and application thereof in field of new energy automobiles - Google Patents

Capillary water absorption column assembly and application thereof in field of new energy automobiles Download PDF

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CN111744337A
CN111744337A CN202010644143.1A CN202010644143A CN111744337A CN 111744337 A CN111744337 A CN 111744337A CN 202010644143 A CN202010644143 A CN 202010644143A CN 111744337 A CN111744337 A CN 111744337A
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water absorption
water
mass
capillary
charging pile
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CN111744337B (en
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任中元
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Shenzhen Fuxin Industrial Technology Co ltd
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    • B01D53/26—Drying gases or vapours
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    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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Abstract

The invention relates to a capillary water absorption column assembly and application thereof in the field of new energy automobiles. The capillary water absorption column assembly is matched with the air-cooled cooling device to dissipate heat for the new energy automobile charging station. The capillary water absorption column assembly is matched with the air-cooled cooling device to be used for dissipating heat of a new energy automobile charging pile in a new energy automobile charging station, and the heat dissipation effect is good; charging pile shell in the new energy automobile charging pile can be designed into a fully-sealed structure, so that the technical defects of dust prevention, moisture prevention and poor salt mist prevention effect of the existing charging pile are overcome.

Description

Capillary water absorption column assembly and application thereof in field of new energy automobiles
Technical Field
The invention relates to a capillary water absorption column assembly and application thereof in the field of new energy automobiles, and belongs to the technical field of new energy automobiles.
Background
In the new energy automobile field, new energy automobile charging station belongs to one of indispensable hardware equipment. In a new energy vehicle charging station, a plurality of charging stations are provided. Compared with other power supplies, the system heat dissipation capacity of the charging pile is much larger, and the requirement on the thermal design of the system is extremely strict. To outdoor equipment, fill inside heat of electric pile and must need the discharge apparatus outside, otherwise will the ageing of accelerating equipment, need make waterproof dirt-proof processing simultaneously to prevent the condition that electronic equipment short circuit and signal are disorderly.
The purpose of building a new energy automobile charging station is to enable a vehicle to be charged to supplement more than 50-60% of electric energy in a short time, in practical application, a common electric automobile is charged quickly by direct current and can be charged within 1-2H, and the charging can be performed only in a slow charging mode for 6-8H. An important factor that new energy automobile can not promote is exactly the convenience of use, consequently is certainly as fast as is better to electric automobile charging demand, but along with the charging speed accelerates, current and voltage also can increase straightly, and this has just led to filling electric pile inductance module power increase. The heat of the components such as the inductance module and the power module is generated rapidly and in large quantity. Therefore, the charging pile can generate large heat in the charging process, and can cause great safety accidents if the heat is not dissipated in time, so that the heat dissipation problem is one of the difficult problems which must be solved in the popularization and construction of the charging pile system! | A
Fill the heat dissipation mode that electric pile conventionality adopted at present and mostly be radiator fan. The advantages are that: low cost, simple installation and less energy consumption. The disadvantages are as follows: outdoor dust easily enters the cabinet to pollute the precision components; if the heat dissipation of the heating element is not strong, heat is easy to accumulate in the heating element, and even if the external heat dissipation strength is larger, the effect is limited; is not conducive to lightweight integrated designs. And the air inlet and the air outlet of the box body bring interference of dust, corrosive gas, moisture and the like. The heat dissipation of the charging pile is divided into a module heat dissipation part and a case integral heat dissipation part, and the charging module is arranged in the case, so that protection measures are mainly embodied on the design of the case. The simplest and most economical design is that the air inlet and the air outlet of the box body are made into a louver type, then a fan is arranged at the air outlet, and heat exhausted by the module fan is pumped away.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a capillary water absorption column assembly and application thereof in the field of new energy automobiles, and the specific technical scheme is as follows:
the capillary water absorption column assembly comprises at least one capillary water absorption column and a water absorption layer matched with the capillary water absorption column.
Furthermore, the capillary water absorption column comprises a cylindrical outer barrel, a plurality of fifth through holes are formed in the lower portion of the outer barrel, a filter barrel is arranged inside the outer barrel, the capillary water absorption column is filled inside the filter barrel, a balance weight ring located above the capillary water absorption column is further arranged inside the filter barrel, and the upper end of the outer barrel is communicated with the lower end of the connecting pipe; the lower part of the water absorption layer covers the counterweight ring and the lower part of the water absorption layer is contacted with the upper end of the capillary water absorption column.
The preparation method of the filter barrel comprises the following steps of coating a layer of barrel-shaped first germ layer on the inner wall of an outer barrel by using first pug, coating a layer of barrel-shaped second germ layer on the inner wall of the first germ layer by using second pug after the first germ layer is dried, sintering in the nitrogen atmosphere after the second germ layer is dried, wherein the sintering temperature is 1600-; the first pug is prepared by mixing and stirring 100 parts by mass of clay, 52-56 parts by mass of volcanic rock particles with the particle size of less than or equal to 3mm, 15-20 parts by mass of sodium bicarbonate and 85-95 parts by mass of water; the second pug is prepared by mixing and stirring 120 parts by mass of diatomite, 60-65 parts by mass of rice husk and 100-110 parts by mass of water.
Further, the preparation method of the capillary water absorption column comprises the steps of mixing and stirring 100 parts by mass of clay, 33-36 parts by mass of high water absorption and moisture absorption fibers, 12-15 parts by mass of sintered balls with the particle size of less than 2mm and 60-70 parts by mass of water to form a first soil material, and hammering the first soil material for at least 1000 times by using a hammering machine to obtain a second soil material, wherein the hammering pressure of the hammering machine on the first soil material is 120 kg; and filling the second soil material into the interior of the filter vat, and hammering the second soil material for at least 60 times by using a hammering machine to obtain the capillary water absorption column, wherein the hammering pressure on the second soil material is 30 kg.
Furthermore, the water-absorbing layer is prepared by uniformly mixing water-absorbing resin, composite attapulgite, spherical sponge particles and high water-absorbing and moisture-absorbing fiber according to the mass ratio of (130-; the preparation method of the water-absorbent resin comprises the following steps: dissolving 1 part by mass of chitosan in 200 parts by mass of acetic acid solution, wherein the mass fraction of the acetic acid solution is 23-26%, heating to 60 ℃ under the nitrogen atmosphere, adding 0.5-0.6 part by mass of initiator to react for 10-15min, adding 2.3-3.1 parts by mass of acrylic acid and 6.6-7.2 parts by mass of active silica gel to perform graft copolymerization for 10h, adding 0.3-0.5 part by mass of cross-linking agent, 0.5-0.6 part by mass of ammonium chloride and 1.2-1.3 parts by mass of polyaluminium chloride, heating to 70 ℃ to react for 5h to obtain a crude product, and separating, washing, drying and crushing the crude product to obtain the water-absorbent resin; the initiator is potassium persulfate, and the cross-linking agent is N, N-methylene-bisacrylamide;
the preparation method of the active silica gel comprises the following steps: reacting 10 parts by mass of silica gel, 50 parts by mass of phosphoric acid solution and 3 parts by mass of fumed silica for 5 hours in an ultrasonic environment, wherein the reaction temperature is 85-88 ℃, and the mass fraction of the phosphoric acid solution is 17%; after the reaction is finished, filtering, washing and drying to obtain the active silica gel;
the preparation method of the composite attapulgite comprises the following steps: mixing acid modified attapulgite, alkali modified attapulgite and polyacrylamide aqueous solution with the mass fraction of 0.6% according to the proportion of 1: 3.3-3.6 to form slurry, airing the slurry to form a mud block, baking the mud block at the temperature of 187-189 ℃ for 3h, cooling and crushing to obtain coarse powder, baking the coarse powder at the temperature of 199-203 ℃ for 30min, cooling, crushing and sieving by a 20-mesh sieve to obtain the composite attapulgite; wherein, the attapulgite and a sulfuric acid solution with the mass fraction of 7.2-7.5% are stirred and mixed for 2 hours according to the mass ratio of 1: 8, the temperature during stirring and mixing is 88-90 ℃, and the acid modified attapulgite is obtained after drying and sieving with a 20-mesh sieve; stirring and mixing attapulgite and 10.6-11.1% potassium hydroxide solution according to the mass ratio of 1: 9.2 for 3h, wherein the temperature during stirring and mixing is 77-80 ℃, and sieving with a 20-mesh sieve after drying to obtain alkali modified attapulgite;
the particle size of the spherical sponge particles is less than or equal to 5 mm.
Still further, the outer diameter of the counterweight ring is smaller than the inner diameter of the lauter tub.
The capillary water absorption column assembly is applied to the field of new energy vehicles, and is matched with an air-cooled cooling device to dissipate heat for a new energy vehicle charging station.
Furthermore, the new energy automobile charging station comprises a plurality of new energy automobile charging piles, each new energy automobile charging pile comprises a charging pile body and a charging pile shell matched with the charging pile body, a heat exchange cavity is arranged between each charging pile shell and the corresponding charging pile body, insulating heat conduction oil which completely wraps the charging pile body is filled in each heat exchange cavity, and an insulating rod is arranged between each charging pile shell and the corresponding charging pile body; the air-cooled cooling device comprises a metal box positioned below a charging pile shell, the lower part of the charging pile shell is fixedly connected with the upper part of the metal box, an air inlet pipe is arranged on one side of the metal box, an air outlet pipe is arranged on the other side of the metal box, a first through hole communicated with the head end of the air inlet pipe is arranged at the top of the metal box, a second through hole communicated with the tail end of the air outlet pipe is further arranged at the top of the metal box, and an axial flow fan for supplying air to the interior of the air inlet pipe is arranged in the air inlet pipe; a connecting pipe is arranged below the metal box, a fourth through hole communicated with the upper end of the connecting pipe is formed in the bottom of the metal box, and the upper end of the capillary water absorption column is arranged inside the connecting pipe; the water absorbing layer penetrates through the fourth through hole, and the upper part of the water absorbing layer is positioned inside the metal box; the utility model discloses a solar heat collector, including a metal box, capillary water absorption post and electric pile body, be provided with a plurality of conducting strips between capillary water absorption post and the electric pile body of filling, the top of metal box still is provided with the third through-hole that supplies the conducting strip to get into, the lateral wall of conducting strip and the pore wall sealing connection of seventh through-hole, the lateral wall and the pore wall sealing connection of third through-hole of conducting strip, the upper end setting of conducting strip is in the inside of filling the electric pile shell, be provided with the clearance between the upper end of conducting strip and the lower extreme of filling the electric pile body, the lower extreme setting of conducting strip is in the inside of metal box, the upper portion on layer of absorbing water wraps up the lower extreme of conducting strip.
The invention has the beneficial effects that:
the capillary water absorption column assembly is matched with the air-cooled cooling device to be used for dissipating heat of a new energy automobile charging pile in a new energy automobile charging station, and the heat dissipation effect is good; charging pile shell in the new energy automobile charging pile can be designed into a fully-sealed structure, so that the technical defects of dust prevention, moisture prevention and poor salt mist prevention effect of the existing charging pile are overcome.
Drawings
FIG. 1 is a schematic structural diagram of a capillary water-absorbing column assembly without a water-absorbing layer;
FIG. 2 is a schematic connection diagram of a charging pile and a metal box of the new energy automobile;
FIG. 3 is a schematic diagram of the connection of the capillary water absorption column assembly and the air-cooled cooling device according to the present invention;
FIG. 4 is a schematic diagram of a water absorption and release test of the capillary water absorption column assembly;
FIG. 5 is a graph showing the water loss at different temperatures for the water-absorbent resin according to the present invention;
FIG. 6 is a schematic diagram of water absorption and water release tests performed on a capillary water absorption column and a capillary tube bundle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Carry out optimal design to the structure that has the electric pile that fills now. As shown in fig. 2 and 3, the new energy automobile charging station comprises a plurality of new energy automobile charging piles 10, each new energy automobile charging pile 10 comprises a charging pile body 15 and a charging pile shell 12 matched with the charging pile body 15, a heat exchange cavity is formed between each charging pile shell 12 and each charging pile body 15, insulating heat conduction oil 14 completely wrapping each charging pile body 15 is filled in each heat exchange cavity, an insulating rod 13 is installed between each charging pile shell 12 and each charging pile body 15, one end of each insulating rod 13 is fixedly connected with the inner wall of each charging pile shell 12, and the other end of each insulating rod 13 is fixedly connected with each charging pile body 15.
The insulating rod 13 is used for installing and supporting the charging pile body 15 so as to form a heat exchange cavity; insulating conduction oil 14 that heat transfer chamber inside was filled is used for carrying out the heat transfer to charging pile body 15, and 14 optional transformer oils of insulating conduction oil, transformer oil have insulating, heat dissipation, arc extinction effect, and the electric leakage can be avoided taking place to insulating nature.
The insulating heat conduction oil 14 completely wraps the charging pile body 15, so that the contact area is large, and the heat exchange effect is improved; in order to avoid leakage of the insulating heat conduction oil 14, the charging pile body 15 needs to be designed into a sealing structure, and as long as the heat dissipation problem is solved, the new energy automobile charging pile 10 has good sealing performance, and external dust and moisture cannot enter, so that after-sale workload is remarkably reduced, and meanwhile, the service life of the new energy automobile charging pile 10 is remarkably prolonged.
Example 2
In order to solve the heat dissipation problem of the new energy automobile charging pile 10, the capillary water absorption column assembly is matched with the air-cooled cooling device to dissipate heat for the new energy automobile charging station.
As shown in fig. 3, the air-cooled cooling device includes a metal box 20 located below a charging pile shell 12, a lower portion of the charging pile shell 12 is fixedly connected with an upper portion of the metal box 20, one side of the metal box 20 is provided with an air inlet pipe 25, the other side of the metal box 20 is provided with an air outlet pipe 24, a first through hole 22 communicated with a head end of the air inlet pipe 25 is arranged at a top of the metal box 20, the top of the metal box 20 is further provided with a second through hole 23 communicated with a tail end of the air outlet pipe 24, an axial flow fan 26 for supplying air to the inside of the air inlet pipe 25 is installed inside the air inlet pipe 25, a dust screen 27 is installed at the head end of the air outlet pipe 24, and a mesh cloth for preventing dust can be; a connecting pipe 29 is arranged below the metal box 20, a fourth through hole communicated with the upper end of the connecting pipe 29 is formed in the bottom of the metal box 20, and the upper end of the capillary water absorption column 50 is arranged inside the connecting pipe 29; the water absorbing layer 40 passes through the fourth through hole, and the upper part of the water absorbing layer 40 is positioned inside the metal box 20; the utility model discloses a solar heat collecting and charging pile, including metal box 20, capillary water absorption column 50 and charging pile body 15, be provided with a plurality of conducting strips 11 between, the top of metal box 20 still is provided with the third through-hole that supplies conducting strip 11 to get into, the lateral wall of conducting strip 11 and the pore wall sealing connection of third through-hole, the bottom of charging pile shell 12 is provided with the seventh through-hole that supplies conducting strip 11 to get into, the lateral wall of conducting strip 11 and the pore wall sealing connection of seventh through-hole, the upper end setting of conducting strip 11 is in charging pile shell 12's inside, be provided with the clearance between the upper end of conducting strip 11 and the lower extreme of charging pile body 15, the lower extreme setting of conducting strip 11 is in metal box 20's inside, the upper portion on layer 40 that absorbs water.
The metal case 20 may be made of a galvanized steel sheet, and in order to improve weather resistance, an anticorrosive paint may be coated on the surface of the galvanized steel sheet. The metal case 20 is installed at a foundation, preferably a concrete foundation, and the capillary suction column 50 is buried in the soil.
First, the axial flow fan 26 blows air into the air inlet duct 25, and then blows the air through the first through hole 22, the inside of the metal box 20, the heat exchange, the second through hole 23, and the air outlet duct 24 in sequence, and finally flows to the outside again. When the air flow passes through the inside of the metal case 20, the heat-conducting fins 11 can be radiated, and the heat-radiating area of the heat-conducting fins 11 can be increased.
As shown in fig. 1 and 3, the capillary absorbent column assembly comprises at least one capillary absorbent column 50 and an absorbent layer 40 matched with the capillary absorbent column 50.
The capillary water absorption column 50 is provided with a large number of capillaries and is buried in a high-water-content area, under the capillary action, the capillary water absorption column 50 can absorb water in soil, the water absorption layer 40 in contact with the upper end of the capillary water absorption column 50 can absorb the water, the water absorption layer 40 covers the lower end of the heat conduction sheet 11, after heat generated by the charging pile body 15 exchanges heat with the insulating heat conduction oil 14, the heat at the insulating heat conduction oil 14 is heated by the water absorption layer 40 after heat conduction of the heat conduction sheet 11, evaporation and heat absorption of the water in the water absorption layer 40 can be accelerated by heating, and therefore the heat dissipation efficiency can be further improved; air cooling is matched to blow away air with high humidity in the metal box 20 in time, so that sufficient evaporation rate can exist in the metal box 20; the evaporation process will cause the water-absorbing layer 40 to decrease in water content, allowing the water-absorbing layer 40 to "attract" water deep in the soil through the capillary suction column 50. The water absorption layer 40 and the capillary water absorption column 50 enable the lower end of the heat conduction sheet 11 to be in a wet state, and heat dissipation and temperature reduction are carried out on the interior of the metal box 20 through heating and evaporation; and forced air exhaust is utilized, so that the heat dissipation effect is further improved.
The capillary water absorption column 50 comprises a cylindrical outer barrel 51, a plurality of fifth through holes 511 are formed in the lower portion of the outer barrel 51, a filter barrel 52 which completely shields the fifth through holes 511 is arranged inside the outer barrel 51, the capillary water absorption column 53 is filled inside the filter barrel 52, a balance weight ring 54 which is positioned above the capillary water absorption column 53 is further arranged inside the filter barrel 52, and the upper end of the outer barrel 51 is communicated with the lower end of the connecting pipe 29; the lower portion of the water absorbent layer 40 covers the counter-weight ring 54 and the lower portion of the water absorbent layer 40 contacts the upper end of the capillary suction column 53.
In order to further improve the air circulation, the surface of the heat conducting sheet 11 is provided with a plurality of heat dissipating holes 111. The heat conductive sheet 11 may preferably be made of a copper alloy having excellent thermal conductivity, and may be subjected to an anticorrosive treatment by spraying an anticorrosive coating.
Further, when a water absorbing material such as Super Absorbent Polymer (SAP) or conventional silica gel is used as the water absorbing layer 40, the water absorption performance is excellent, but the water loss temperature is usually 100 ℃. The temperature inside the charging post body 15 is usually not more than 100 ℃, so that the material cannot lose water after water is saturated.
The charging pile body 15 can be a 60KW charging pile bare part of Shenzhen pole number charging and Internet of things technology Limited company, and the normal working temperature range is-20-70 ℃; when the ambient temperature is 38-40 ℃ in summer, the maximum temperature inside the charging pile bare piece can reach 70 ℃ (the time is not more than 1 h). The temperature of the thermally conductive sheet 11 during the high temperature period is usually 60 to 68 ℃.
Further, the water-absorbing layer 40 is prepared by uniformly mixing 130-150kg of water-absorbing resin, 230-260kg of composite attapulgite, 20-28kg of spherical sponge particles and 33-40kg of high water-absorbing and moisture-absorbing fiber. Wherein the particle size of the spherical sponge particles is less than or equal to 5 mm.
Further, a method for producing the water-absorbent resin: dissolving 1kg of chitosan in 200kg of acetic acid solution, wherein the mass fraction of the acetic acid solution is 23-26%, heating to 60 ℃ under the nitrogen atmosphere, adding 0.5-0.6kg of initiator to react for 10-15min, adding 2.3-3.1kg of acrylic acid and 6.6-7.2kg of active silica gel to graft-copolymerize for 10h, adding 0.3-0.5kg of cross-linking agent, 0.5-0.6kg of ammonium chloride and 1.2-1.3kg of polyaluminium chloride, heating to 70 ℃ to react for 5h to obtain a crude product, separating, washing with water, drying and crushing the crude product to obtain the water-absorbent resin; the initiator is potassium persulfate, and the cross-linking agent is N, N-methylene-bisacrylamide.
Further, the preparation method of the active silica gel comprises the following steps: reacting 10kg of silica gel, 50kg of phosphoric acid solution and 3kg of fumed silica for more than 5 hours under an ultrasonic environment, wherein the reaction temperature is 85-88 ℃, and the mass fraction of the phosphoric acid solution is 17%; and after the reaction is finished, filtering, washing and drying to obtain the active silica gel.
Further, the preparation method of the composite attapulgite comprises the following steps: mixing 1kg of acid-modified attapulgite, 1kg of alkali-modified attapulgite and 3.3-3.6kg of polyacrylamide aqueous solution with the mass fraction of 0.6% to form slurry, airing the slurry to form a mud block, baking the mud block at the temperature of 187-189 ℃ for 3 hours, cooling, crushing to obtain coarse powder, baking the coarse powder at the temperature of 199-203 ℃ for 30 minutes, cooling, crushing, and sieving with a 20-mesh sieve to obtain the composite attapulgite; wherein 10kg of attapulgite and 80kg of sulfuric acid solution with the mass fraction of 7.2-7.5% are stirred and mixed for 2 hours, the temperature during stirring and mixing is 88-90 ℃, and the mixture is dried and then sieved by a 20-mesh sieve to obtain the acid modified attapulgite; 10kg of attapulgite and 9.2kg of potassium hydroxide solution with the mass fraction of 10.6-11.1% are stirred and mixed for 3 hours, the temperature during stirring and mixing is 77-80 ℃, and the mixture is dried and sieved by a 20-mesh sieve to obtain the alkali modified attapulgite.
1. Measurement of conventional Water absorption
5g of a sufficiently dried water-absorbent resin was weighed, placed in a beaker containing 500ml of distilled water, left to stand for 24 hours, and then unabsorbed water was filtered off with a filter cloth and sucked dry with absorbent cotton, and then weighed, and the water absorption of the water-absorbent resin was (total weight after water absorption-dry weight before water absorption)/dry weight before water absorption. The term "water-absorbent resin after sufficient drying" means a state in which the total weight of the water-absorbent resin does not change after continuous drying in an oven at 120 ℃ for 1 hour. In this example, the water absorption of the water-absorbent resin was found to be 563 to 612%. The water absorption of the water-absorbent resin described in this example is superior to that of silica gel, but much lower than that of super absorbent resin (SAP); the super absorbent resin can absorb water hundreds times to thousands times of its own weight, has strong water retention, cannot be squeezed out even if pressurized water is applied, and can expand by several times after absorbing water.
Similarly, the water absorption of the composite attapulgite is 166-171 percent; the water absorption of the attapulgite is 79-88%.
2. Determination of the volume expansion ratio
With the liquid-drainage-side volume, a liquid which is immiscible with the water-absorbent resin and insoluble in water can be used, for example: benzene is adopted; volume expansion ratio (volume after water absorption-volume before water absorption)/volume before water absorption. The volume expansion of the water-absorbent resin measured in this example was 81% to 89%, which is much lower than that of a super absorbent resin (SAP).
3. Determination of Water loss on heating
A mass (e.g., 669.3g) of a water-absorbent resin saturated with water was placed in an air-drying oven, and the mass of the water-absorbent resin was weighed 1 time at intervals of 1 hour at a set temperature (e.g., 72 ℃, 66 ℃, 60 ℃). Water loss rate (total weight before heating-total weight after heating)/total weight before heating. As shown in fig. 5, when the dried product is dried at 72 ℃ for 12 hours, the water loss rate is stabilized to be more than 71%; when the dried product is dried at 66 ℃ for 12 hours, the water loss rate is stabilized to be more than 60 percent; when the product is dried at 60 ℃ for 12 hours, the water loss rate is stabilized at about 50 percent. The water-absorbent resin is completely dried, and the drying time needs to be more than 2 hours at 105 ℃. As is clear from FIG. 5, the water-absorbent resin can rapidly lose water by continuously heating at 60 to 72 ℃ after absorbing water, and the water loss rate can reach 46% or more at most by exceeding 30% when heated for 5 hours or more. According to the measurement, 1000g of the water-absorbent resin was heated at 60 ℃ for 3 hours after saturation in water absorption, and the average evaporation rate was 1.78 g/min; 1000g of the water-absorbent resin was saturated with water and then heated at 66 ℃ for 3 hours, and the average evaporation rate was 2.17 g/min.
Since the water-absorbent resin, the composite attapulgite, the spherical sponge particles and the high water-absorbent fibers in the water-absorbent layer 40 can be heated to lose water, after the water-absorbent layer 40 is saturated with water, 50kg of the water-absorbent layer 40 is heated at 66 ℃ for 1 hour, and the average evaporation rate is 126.1 g/min.
New energy automobile fills area of electric pile 10 and is 0.18m 28 new energy automobile charging piles 10 are arranged, and the length, the width and the height of the metal box 20 are 10.2m, 1.3m and 2m respectively. The metal case 20 has a volume of 23.8 cubic meters and accommodates 5355kg of the water-absorbing layer 40. The air inlet pipe 25 and the air outlet pipe 24 are respectively provided with 6. Since the remaining volume of the metal case 20 after the water-absorbing layer 40 is filled is far larger than the volume of the water-absorbing layer 40 that swells when absorbing water, the metal case 20 cannot be crushed even if the water-absorbing layer 40 swells completely when absorbing water. The water absorption layer 40 in the metal box 20 has a large volume and a large water absorption capacity, the evaporation rate of the water absorption layer can meet the use requirement, the highest heat dissipation temperature is not more than 70 ℃, and the cooling amplitude exceeds 20 ℃.
The high water absorption and moisture absorption fiber can adopt Hy type water absorption and moisture absorption fiber produced by Japan Unico of Yongzhou chemical industry, Inc., or Bell type fiber of Korea three stars; the Hy type water-absorbing and water-absorbing fiber has water-absorbing capacity 3.3-3.5 times of the self weight, and has water-absorbing property and water-discharging property; the fiber has better moisture absorbing and releasing capacity and moisture absorbing and releasing speed than natural fiber, and the moisture releasing speed is faster than the moisture absorbing speed. The high water-absorbing and moisture-absorbing fiber has the disadvantages that the cost is very high and is ten times of that of the water-absorbing resin; therefore, the content of the high water-absorbent and moisture-absorbent fibers cannot be excessively high.
Further, the inside of the metal box 20 is further provided with a metal filter screen 61 covering the water absorbing layer 40, the screen surface of the metal filter screen 61 is provided with a long hole for the lower end of the heat conducting strip 11 to enter, the inside of the metal box 20 is further provided with a grid plate 62 positioned above the metal filter screen 61, the grid plate 62 is provided with a plurality of rectangular holes for the lower end of the heat conducting strip 11 to enter, the inner wall of the metal box 20 is fixedly provided with a baffle 63, and the baffle 63 is arranged between the grid plate 62 and the top of the metal box 20.
The metal screen 61 and the grid plate 62 may be made of a metal material with a relatively high density, such as iron or lead, and may be treated with zinc plating or anti-corrosion paint for improving the corrosion resistance. The combination of the metal screen 61 and the grid plate 62 can always apply pressure to the water-absorbing layer 40, thereby ensuring that the water-absorbing layer 40 is compacted. In addition, the presence of the metal screen 61 and the grid plate 62 can also exert a heavy pressure on the water-absorbing layer 40 inside the metal box 20, thereby facilitating the water loss thereof.
Further, the air inlet pipe 25 and the air outlet pipe 24 are both arranged in an n-shaped structure. When in rainy or snowy weather, the air inlet pipe 25 and the air outlet pipe 24 of the structure can prevent a large amount of rainwater from being poured backwards, and can also prevent the axial flow fan 26 from being wetted.
The preparation method of the filter vat 52 comprises the following steps: coating a layer of barrel-shaped first germ layer on the inner wall of an outer barrel by using first pug, after the first germ layer is dried, coating a layer of barrel-shaped second germ layer on the inner wall of the first germ layer by using second pug, after the second germ layer is dried, sintering in the protection of nitrogen atmosphere, wherein the sintering temperature is 1600-1650 ℃, and compounding the sintered first germ layer and the sintered second germ layer into a filter barrel; the first pug is prepared by mixing and stirring 100kg of clay, 52-56kg of volcanic rock particles with the particle size less than or equal to 3mm, 15-20kg of sodium bicarbonate and 85-95kg of water; the second pug is prepared by mixing and stirring 120kg of diatomite, 60-65kg of rice husk and 100-110kg of water.
The rice hulls are calcined in a nitrogen protection atmosphere, so that oxygen is avoided, and carbonization, rather than oxidative combustion, of the rice hulls is facilitated. The first germ layer is mainly volcanic rock particles, the pore diameter of the volcanic rock particles is large, a large amount of gas generated by the thermal decomposition of sodium bicarbonate flows out of channels inside the volcanic rock particles, and the pore diameter of filter pores of the first germ layer after sintering is large. The rice hulls are carbonized and sintered with diatomite, gases such as water vapor, carbon dioxide and the like generated in the sintering process can also promote the rice hulls to form an activated carbon-like structure, the gases such as the water vapor, the carbon dioxide and the like can promote the carbonized rice hulls to be activated in the reaction process, and the pore volume of the first germ layer after final sintering is 0.60-0.85 ml/g; the specific surface of the second germinal layer after sintering is 750-900m2 Asahi, and the pore volume is 0.31-0.36 ml/g. If sodium bicarbonate is not added, the pore volume of the first germ layer after sintering is reduced by 33.1-37.5%, and the specific surface of the second germ layer after sintering is reduced by 60.6-71.2%. After the sewage mixed with soil at the bottom is subjected to double filtration of the sintered first germ layer and the sintered second germ layer, large-particle impurities such as soil are blocked outside the filter vat 52, and clear water can pass through the filter vat 52 to enter the filter vat 52 and is finally absorbed by the capillary water absorption columns 53.
The preparation method of the capillary water absorption column 53 comprises the following steps: mixing and stirring 100kg of clay, 33-36kg of high water absorption and moisture absorption fibers, 12-15kg of sintered balls with the particle size of less than 2mm and 60-70kg of water into a first soil material, and hammering the first soil material for at least 1000 times by using a hammering machine to obtain a second soil material, wherein the hammering pressure of the hammering machine on the first soil material is 120 kg; and filling the second soil material into the interior of the filter vat, and hammering the second soil material for at least 60 times by using a hammering machine to obtain the capillary water absorption column, wherein the hammering pressure on the second soil material is 30 kg.
The outer diameter of the weight ring 54 is smaller than the inner diameter of the lauter tub 52 to facilitate the up and down movement of the weight ring 54 inside the lauter tub 52. The clay is hammered to enable a large number of tiny capillaries to exist inside the clay, the number of capillaries inside the clay can be further increased due to the existence of the high water absorption and moisture absorption fibers, and meanwhile, the high water absorption and moisture absorption fibers have excellent water absorption and release performances. Zibobona scientific and technological development Limited company BQ type sintered ball has certain water absorption and water release capacity, and the water absorption rate can reach more than 35%. The counterweight ring 54 can be made of lead material, and the existence of the counterweight ring 54 enables the clay to keep compact structure for a long time, and a large number of capillaries are kept inside. The water absorption of the capillary water absorption column 53 does not drop more than 5.8% even after half a year of use. Due to the presence of a large number of capillary tubes, even if the height of the capillary suction column 53 exceeds 4 meters, water at the lower end of the capillary suction column 53 can be transported to the upper end of the capillary suction column 53.
According to the water-saving resource bulletin of Anhui in 2017, based on the cottage-sunny area of the combined fertilizer city and no underground water burial depth of the city second dam town, the actual measurement is carried out: in the two places, the soil 2 meters deep underground has the water content of 15 to 20 percent; the water content of the soil with the depth of 3 meters underground is 20 to 25 percent; the water content of soil 5m deep underground is above 35%. Because the height of the metal box 20 is set to be 2m, and the depth of the metal box 20 buried in the soil is 1m, the capillary water absorption column 50 is set to be more than 4m in length at the two places, the lower end of the capillary water absorption column 50 is guaranteed to be located in the depth of 5m underground, and the water resource at the place is very rich.
The capillary water absorption column assembly is used for being matched with the air-cooled cooling device to dissipate heat of the new energy automobile charging pile 10 in the new energy automobile charging station, the highest temperature inside the new energy automobile charging pile 10 is 41.7-50.5 ℃, the highest cooling amplitude can reach 18.6 ℃, and the cooling effect is good.
Example 3
The water absorption and release tests of the capillary water absorption column 53 in example 2 were performed, as shown in fig. 4, a water tank 94 was placed below the air-cooled cooling device, a water grate 95 was installed inside the water tank 94, a muddy soil layer 97 located above the water grate 95 was filled inside the water tank 94, water was filled into the water tank 94, a water storage layer 96 was present below the water grate 95, and the initial water content of the muddy soil layer 97 was over 50%.
The lower end of the capillary water absorption column 50 in the air-cooled cooling device is inserted into the water tank 94 until the lower end of the capillary water absorption column 50 is in contact with the water grate 95, and the height of the capillary water absorption column 50 is 4 m. The original new energy automobile charging pile 10 is replaced by an electric heating plate 10b, and the heating temperature of the electric heating plate 10b is 65-70 ℃. A temperature and humidity sensor 93 is installed inside the air outlet pipe 24, and the temperature and humidity sensor 93 can be a jiabo brand product of jiabo instrument science and technology limited, taizhou city.
The axial flow fan 26 works from 10 am to 7 pm, and the air quantity of the axial flow fan 26 is 250m3H is used as the reference value. Measuring the outside room temperature T every hour1Humidity RH1Temperature T at temperature/humidity sensor 932Humidity RH2The results are shown in table 1:
TABLE 1 (temperature in degrees Celsius, relative humidity in%)
10 o' clock 11 point 12 points 13 o' clock 14 points 15 points 16 points 17 point 18 points 19 points
T1 28.3 30.1 31.5 33.1 35.1 36.3 34.7 33.5 32.8 31.6
RH 1 63 62 61 60 59 60 61 61 62 63
T2 41-42 43-45 45-47 47-50 50-53 50-52 49-51 46-48 44-46 43-44
RH2 91 92 91 92 93 95 92 93 90 91
As can be seen from Table 1: t is2Greater than T1，RH2Greater than RH1And RH is2Greater than or equal to 90%, RH2The maximum value of (a) reaches 95%. Therefore, the capillary water absorption column 50 always absorbs the water in the water tank 94, and finally the water in the water absorption layer 40 is heated and evaporated, so that the humidity inside the air outlet pipe 24 is always higher than the outside humidity.
Example 4
Compared with the embodiment 2, in the embodiment, the capillary bundle is adopted to replace the capillary water absorption column 53 in the capillary water absorption column 50, the height of the capillary bundle is 4m, the capillary bundle is made of a plurality of metal capillary tubes, and the metal capillary tubes with the commonly used and cost-performance ratio and the inner diameter of 1mm are selected, for example, the metal capillary tubes made of 304 materials of the constant-pump precision hardware materials ltd, available in Dongguan, are smaller in the inner diameter and higher in cost; the cost of selecting a metal capillary having an inner diameter of 1mm is comparable to that of the capillary suction column 53.
The water absorbing and releasing ability was measured in the same manner as in example 3, and the test conditions were the same as in example 3. The axial flow fan 26 works from 10 am to 7 pm, and the air quantity of the axial flow fan 26 is 250m3H is used as the reference value. Measuring the outside room temperature T every hour3Humidity RH3Temperature T at temperature/humidity sensor 934Humidity RH4The results are shown in table 2:
TABLE 2 (temperature in degrees Celsius and relative humidity in%)
10 o' clock 11 point 12 points 13 o' clock 14 points 15 points 16 points 17 point 18 points 19 points
T3 27.9 28.6 29.1 30.2 31.5 30.8 29.6 28.1 26.9 25.9
RH3 67 65 63 61 59 60 62 63 65 66
T4 53-54 57-58 58-59 60-62 64-66 65-67 63-65 60-62 59-60 58-59
RH4 71 70 73 72 72 72 71 73 72 71
As can be seen from Table 2: t is4Greater than T3，RH4Greater than RH3And RH is4The maximum value of (a) does not exceed 73%; therefore, the capillary tube bundle has poor water-absorbing capacity due to the overlong length and the overlarge inner diameter, and has a limited humidifying effect on the inside of the metal box 20, so that the heat dissipation effect inside the metal box 20 is poor.
By comparing this example with example 3, it can be seen that: water drawing capacity of capillary tube bundleIs significantly inferior to the capillary suction column 53, which results in the failure to replenish the interior of the metal case 20 with sufficient moisture in time, is not conducive to heat dissipation, and results in T4Is significantly greater than T2，RH4Significantly less than RH2。
Example 5
Based on example 2, in summer, the axial flow fan 26 is usually operated from 10 am to 7 pm in the morning and the surface air temperature is higher than 30 ℃, and the air volume of the axial flow fan 26 in the period is 250m3And h, the relative humidity of the second through hole 23 and the first through hole 22 is always larger than 67%, the maximum value of the relative humidity is close to 90%, and the relative humidity is obviously higher than the external relative humidity.
Example 6
In this example, the active silica gel in example 2 was replaced with a control M, which is a silica gel having a content of 98% or more. Because the silica gel is not activated, the mass of the silica gel participating in the reaction is less than 30 percent, and the yield of the final finished product is lower than that of the example 2 by more than 60 percent.
Example 7
In this example, the composite attapulgite in example 2 was replaced with a control N, which was attapulgite. Since the attapulgite is not subjected to acid modification or alkali modification, the water absorption of the water-absorbent resin in acidic water is reduced by 50 to 65%, and the water absorption in alkaline water is reduced by 89 to 71%. Wherein, when the water absorption of the water-absorbent resin in acidic water is measured, a certain mass of dried water-absorbent resin is put into sodium dihydrogen phosphate solution, and the concentration is 0.09 mol/L; water absorption of Water-absorbent resin in alkaline Water was measured by placing a certain mass of dried water-absorbent resin in a calcium chloride solution at a concentration of 0.09 mol/L.
The water retention of the water-absorbent resin in the salt solution is affected because polyacrylamide is not added. The method for measuring the water retention rate comprises the following steps: after the water-absorbent resin absorbs water in a sodium chloride solution with the concentration of 0.09mol/L until the water-absorbent resin is saturated, the water-absorbent resin is sent into an oven to be baked, the weight of the water-absorbent resin does not change at a certain temperature, the difference between the total weight of the water-absorbent resin and the dry weight of the water-absorbent resin at the certain temperature is the water retention capacity of the water-absorbent resin at the certain temperature, and the water retention capacity divided by the dry weight of the water-absorbent resin is the water retention capacity of the water-absorbent resin at the certain temperature. If no polyacrylamide is added, the water retention of the water-absorbent resin in the salt solution is reduced by more than 36.9%; too low water retention affects the durability of the water-releasing property (water loss property by heating) of the water-absorbent resin, that is, the water-absorbent resin loses a large amount of water at the initial stage of heating, and the water loss at the latter stage is far lower than that at the former stage.
Example 8
Group A: as shown in FIG. 4, a water tank 94 was placed below the air-cooled chiller in example 2, and a water absorption and release test was conducted with the height of the capillary suction column 53 being 4 m. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, after the electric heating plate 10b is heated for 1.5h, the humidity RH at the temperature and humidity sensor 93 is measured5Then, the humidity at the temperature and humidity sensor 93 is measured every 1 h; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured6。
Group B: as shown in FIG. 4, a water tank 94 was placed below the air-cooled chiller in example 2, and a test of water absorption and water release properties was conducted with the height of the capillary suction column 53 being 5 m. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, electricityAfter heating for 1.5 hours on hot plate 10b, humidity RH at temperature and humidity sensor 93 is measured7Then, the humidity at the temperature and humidity sensor 93 is measured every 1 h; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured8。
Group C: as shown in FIG. 4, a water tank 94 was placed below the air-cooled chiller in example 2, and a water absorption and release test was conducted with the height of the capillary suction column 53 being 6 m. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, after the electric heating plate 10b is heated for 1.5h, the humidity RH at the temperature and humidity sensor 93 is measured9Then, the humidity at the temperature and humidity sensor 93 is measured every 1 h; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured10。
Group D: as shown in fig. 4, compare with group a, adopt capillary bundle to replace capillary water absorption column 53 among the capillary water absorption column 50 in this group, capillary bundle's height is 4m, capillary bundle is made by a plurality of metal capillary cluster, chooses for use and the internal diameter that the price/performance ratio is high for use to be 1 mm's metal capillary. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, after the electric heating plate 10b is heated for 1.5h, the humidity RH at the temperature and humidity sensor 93 is measured11Then measuring temperature and humidity sensing every 1hHumidity at vessel 93; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured12。
Group E: as shown in fig. 4, compare with group B, adopt capillary bundle to replace capillary water absorption column 53 among the capillary water absorption column 50 in this group, capillary bundle's height is 5m, capillary bundle is made by a plurality of metal capillary cluster, chooses for use and the internal diameter that the price/performance ratio is high for use to be 1 mm's metal capillary. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, after the electric heating plate 10b is heated for 1.5h, the humidity RH at the temperature and humidity sensor 93 is measured13Then, the humidity at the temperature and humidity sensor 93 is measured every 1 h; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured14。
And F group: as shown in fig. 4, compare with group C, adopt capillary bundle to replace capillary water absorption column 53 among the capillary water absorption column 50 in this group, capillary bundle's height is 6m, capillary bundle is made by a plurality of metal capillary cluster, chooses for use and the internal diameter that the price/performance ratio is high for use to be 1 mm's metal capillary. The water absorption layer 40 is heated by the electric heating plate 10b at 120 ℃ for more than 3h until the absolute value of the difference between the humidity value measured by the temperature and humidity sensor 93 and the humidity value of the external environment is not more than 2%. Then, the heating is stopped, the water-absorbing layer 40 is cooled to room temperature, and then water is added to the inside of the water tank 94 until the initial water content of the muddy soil layer 97 becomes 50.5%. Then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, starting the axial flow fan 26, and the air volume of the axial flow fan 26 is 200m3H, after the electric heating plate 10b is heated for 1.5h, the humidity RH at the temperature and humidity sensor 93 is measured15And then at the temperature and humidity sensor 93 every 1hHumidity; while measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured16。
The measurement results of the A-F groups are shown in Table 3:
TABLE 3 (relative humidity in%)
Figure BDA0002570123220000211
Figure BDA0002570123220000221
As can be seen from Table 3: the humidity measured by the temperature and humidity sensor 93 in each group is greater than the ambient humidity, so that whether the capillary water absorption column 53 or the capillary tube bundle is used together with the water absorption layer 40, even if the heights of the capillary water absorption column 53 and the capillary tube bundle exceed 4m, the capillary water absorption column 53 and the capillary tube bundle still have certain water absorption capacity.
Analyzing the groups A-C, the water drawing energy of the capillary water suction column 53 is reduced along with the extension of the height of the capillary water suction column 53; however, even if the height of the capillary suction column 53 reaches 6m, the humidity value measured at the temperature and humidity sensor 93 still exceeds 73%; the difference between the humidity value and the environmental humidity value is more than 16 percent, and the humidity difference can reach 21 percent at most. However, analysis of group D-F showed that the wicking energy of the capillary bundle decreased as the height of the capillary bundle increased; when the height of the capillary tube bundle reaches 6m, the difference between the humidity value measured by the temperature and humidity sensor 93 and the environmental humidity value is 3-5%, and is only slightly higher than the environmental humidity; this means that the capillary bundles have a limited water-absorbing effect on the soil layer 97, even with the water-absorbing layer 40, when the height of the capillary bundles is higher, which is much lower than the water-absorbing capacity of the capillary water-absorbing columns 53. Compared with the capillary tube bundle and the capillary water absorption column 53 with the same length, the water absorption capacity of the capillary water absorption column 53 is far larger than that of the capillary tube bundle.
Example 9
Group X: as shown in fig. 6, in comparison with the air-cooled type cooling apparatus of example 2, in this example, the water absorption layer 40 was not provided, and the height of the capillary water absorption column 53 was 4m, and water absorption and water release tests were performed. First to the inside of the water tank 94Adding water until the initial water content of the mud layer 97 is 70%, and then electrifying the electric heating plate 10b, wherein the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, the axial flow fan 26 is started, and the air volume of the axial flow fan 26 is 20m3H, after the electric heating plate 10b is heated, the humidity RH at the temperature and humidity sensor 93 is measured every 30min17(ii) a While measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured18。
Group Y: as shown in fig. 6, compared with the X group, the capillary suction column 53 in the capillary suction column 50 is replaced by the capillary bundle in the group, the height of the capillary bundle is 4m, the capillary bundle is made of a plurality of metal capillary tubes, and the metal capillary tubes with the inner diameter of 1mm, which are commonly used and have high cost performance, are selected. In the process of testing water absorption and water release performance, water is firstly added into the water tank 94 until the initial water content of the soil layer 97 is 70%, then the electric heating plate 10b is electrified, the heating temperature of the electric heating plate 10b is 68 +/-1 ℃, the axial flow fan 26 is started, and the air volume of the axial flow fan 26 is 20m3H, after the electric heating plate 10b is heated, the humidity RH at the temperature and humidity sensor 93 is measured every 30min19(ii) a While measuring the humidity at the temperature and humidity sensor 93, the primary environmental humidity value RH is measured20. The measurement results are shown in table 4:
TABLE 4 (relative humidity in%)
Figure BDA0002570123220000231
As can be seen from Table 4: in group X, the humidity at the temperature and humidity sensor 93 is almost the same as the ambient humidity in the first 2h, which means that it is difficult to spontaneously draw water upwards in the initial stage by the capillary water absorption column 50; at a later time, the capillary water absorption column 50 can spontaneously absorb water upwards, but the water absorption capacity is limited, and the humidity difference between the humidity at the temperature and humidity sensor 93 and the ambient humidity is only 17% at most, which is far lower than the group A in the embodiment 8; this indicates that: only when the capillary water absorption column 50 is used in combination with the water absorption layer 40, excellent water absorption performance can be exhibited.
In the group Y, the capillary tube bundle can draw water upwards only after 30-60 minutes, and the water drawing performance is started quickly; however, the water drawing capacity of the capillary tube bundle is limited, and the humidity difference between the humidity at the temperature and humidity sensor 93 and the ambient humidity reaches only 8% at most in 4-5h later, which is lower than that of the X group; furthermore, as time goes by, the moisture in the water tank 94 decreases more, and the humidity difference between the humidity at the temperature and humidity sensor 93 and the ambient humidity also decreases, which indicates that the capillary bundle does not have the water retention capability.
In the above embodiments, all the temperature measuring means preferably measure the temperature with a K-type thermocouple.
The capillary water absorption column assembly is matched with the air-cooled cooling device to be used for dissipating heat of the new energy automobile charging pile 10 in the new energy automobile charging station, and the heat dissipation effect is good; charging pile shell 12 in new energy automobile charging pile 10 can be designed into the totally enclosed structure to solve the technical defect that present charging pile's dustproof, dampproofing, salt proof fog effect is poor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. Capillary suction column subassembly, its characterized in that: comprises at least one capillary water absorption column and a water absorption layer matched with the capillary water absorption column.
2. The capillary suction column assembly of claim 1, wherein: the capillary water absorption column comprises a cylindrical outer barrel, a plurality of fifth through holes are formed in the lower portion of the outer barrel, a filter barrel is arranged inside the outer barrel, the capillary water absorption column is filled inside the filter barrel, a balance weight ring located above the capillary water absorption column is further arranged inside the filter barrel, and the upper end of the outer barrel is communicated with the lower end of the connecting pipe; the lower part of the water absorption layer covers the counterweight ring and the lower part of the water absorption layer is contacted with the upper end of the capillary water absorption column.
3. The capillary suction column assembly of claim 2, wherein: the preparation method of the filter barrel comprises the steps of coating a layer of barrel-shaped first germ layer on the inner wall of an outer barrel by using first mud, coating a layer of barrel-shaped second germ layer on the inner wall of the first germ layer by using second mud after the first germ layer is dried, sintering in the protection of nitrogen after the second germ layer is dried, wherein the sintering temperature is 1600-; the first pug is prepared by mixing and stirring 100 parts by mass of clay, 52-56 parts by mass of volcanic rock particles with the particle size of less than or equal to 3mm, 15-20 parts by mass of sodium bicarbonate and 85-95 parts by mass of water; the second pug is prepared by mixing and stirring 120 parts by mass of diatomite, 60-65 parts by mass of rice husk and 100-110 parts by mass of water.
4. The capillary suction column assembly of claim 2, wherein: the preparation method of the capillary water absorption column comprises the steps of mixing and stirring 100 parts by mass of clay, 33-36 parts by mass of high water absorption and moisture absorption fibers, 12-15 parts by mass of sintered balls with the particle size of less than 2mm and 60-70 parts by mass of water into a first soil material, hammering the first soil material for at least 1000 times by using a hammering machine to obtain a second soil material, wherein the hammering pressure of the hammering machine on the first soil material is 120 kg; and filling the second soil material into the interior of the filter vat, and hammering the second soil material for at least 60 times by using a hammering machine to obtain the capillary water absorption column, wherein the hammering pressure on the second soil material is 30 kg.
5. The capillary suction column assembly of claim 2, wherein: the water absorption layer is prepared by uniformly mixing water absorption resin, composite attapulgite, spherical sponge particles and high water absorption and moisture absorption fibers according to the mass ratio of (130-; the preparation method of the water-absorbent resin comprises the following steps: dissolving 1 part by mass of chitosan in 200 parts by mass of acetic acid solution, wherein the mass fraction of the acetic acid solution is 23-26%, heating to 60 ℃ under the nitrogen atmosphere, adding 0.5-0.6 part by mass of initiator to react for 10-15min, adding 2.3-3.1 parts by mass of acrylic acid and 6.6-7.2 parts by mass of active silica gel to perform graft copolymerization for 10h, adding 0.3-0.5 part by mass of cross-linking agent, 0.5-0.6 part by mass of ammonium chloride and 1.2-1.3 parts by mass of polyaluminium chloride, heating to 70 ℃ to react for 5h to obtain a crude product, and separating, washing, drying and crushing the crude product to obtain the water-absorbent resin; the initiator is potassium persulfate, and the cross-linking agent is N, N-methylene-bisacrylamide;
the preparation method of the active silica gel comprises the following steps: reacting 10 parts by mass of silica gel, 50 parts by mass of phosphoric acid solution and 3 parts by mass of fumed silica for 5 hours in an ultrasonic environment, wherein the reaction temperature is 85-88 ℃, and the mass fraction of the phosphoric acid solution is 17%; after the reaction is finished, filtering, washing and drying to obtain the active silica gel;
the preparation method of the composite attapulgite comprises the following steps: mixing acid modified attapulgite, alkali modified attapulgite and polyacrylamide aqueous solution with the mass fraction of 0.6% according to the proportion of 1: 3.3-3.6 to form slurry, airing the slurry to form a mud block, baking the mud block at the temperature of 187-189 ℃ for 3h, cooling and crushing to obtain coarse powder, baking the coarse powder at the temperature of 199-203 ℃ for 30min, cooling, crushing and sieving by a 20-mesh sieve to obtain the composite attapulgite; wherein, the attapulgite and a sulfuric acid solution with the mass fraction of 7.2-7.5% are stirred and mixed for 2 hours according to the mass ratio of 1: 8, the temperature during stirring and mixing is 88-90 ℃, and the acid modified attapulgite is obtained after drying and sieving with a 20-mesh sieve; stirring and mixing attapulgite and 10.6-11.1% potassium hydroxide solution according to the mass ratio of 1: 9.2 for 3h, wherein the temperature during stirring and mixing is 77-80 ℃, and sieving with a 20-mesh sieve after drying to obtain alkali modified attapulgite;
the particle size of the spherical sponge particles is less than or equal to 5 mm.
6. The capillary suction column assembly of claim 2, wherein: the outer diameter of the counterweight ring is smaller than the inner diameter of the filter vat.
7. Application of capillary water absorption column subassembly in new energy automobile field, its characterized in that: the capillary water absorption column assembly is matched with the air-cooled cooling device to dissipate heat for the new energy automobile charging station.
8. The application of the capillary water absorption column assembly in the field of new energy automobiles according to claim 7 is characterized in that: the new energy automobile charging station comprises a plurality of new energy automobile charging piles, each new energy automobile charging pile comprises a charging pile body and a charging pile shell matched with the charging pile body, a heat exchange cavity is arranged between each charging pile shell and each charging pile body, insulating heat conduction oil which completely wraps the charging pile bodies is filled in each heat exchange cavity, and an insulating rod is arranged between each charging pile shell and each charging pile body; the air-cooled cooling device comprises a metal box positioned below a charging pile shell, the lower part of the charging pile shell is fixedly connected with the upper part of the metal box, an air inlet pipe is arranged on one side of the metal box, an air outlet pipe is arranged on the other side of the metal box, a first through hole communicated with the head end of the air inlet pipe is arranged at the top of the metal box, a second through hole communicated with the tail end of the air outlet pipe is further arranged at the top of the metal box, and an axial flow fan for supplying air to the interior of the air inlet pipe is arranged in the air inlet pipe; a connecting pipe is arranged below the metal box, a fourth through hole communicated with the upper end of the connecting pipe is formed in the bottom of the metal box, and the upper end of the capillary water absorption column is arranged inside the connecting pipe; the water absorbing layer penetrates through the fourth through hole, and the upper part of the water absorbing layer is positioned inside the metal box; the utility model discloses a solar heat collector, including a metal box, capillary water absorption post and electric pile body, be provided with a plurality of conducting strips between capillary water absorption post and the electric pile body of filling, the top of metal box still is provided with the third through-hole that supplies the conducting strip to get into, the lateral wall of conducting strip and the pore wall sealing connection of seventh through-hole, the lateral wall and the pore wall sealing connection of third through-hole of conducting strip, the upper end setting of conducting strip is in the inside of filling the electric pile shell, be provided with the clearance between the upper end of conducting strip and the lower extreme of filling the electric pile body, the lower extreme setting of conducting strip is in the inside of metal box, the upper portion on layer of absorbing water wraps up the lower extreme of conducting strip.
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CN110466378A (en) * 2019-09-02 2019-11-19 华育昌(肇庆)智能科技研究有限公司 New-energy automobile charging pile
CN209692216U (en) * 2019-05-14 2019-11-26 北京通州开关有限公司 A kind of band cooling system box-type substation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101857311A (en) * 2010-05-13 2010-10-13 厦门市新绿之源环境工程有限公司 Multifunctional filter material for circulating water treatment and preparation method thereof
US20190091654A1 (en) * 2016-04-27 2019-03-28 Vittorio CECCARINI Highly absorbent and absorbent capillary hydrophobic polymer and corresponding manufacturing process
CN106679450A (en) * 2017-02-08 2017-05-17 苏州暖舍节能科技有限公司 Double-purpose radiating fin system for refrigeration and heating
CN208602342U (en) * 2018-07-03 2019-03-15 清远市敬威能源开发有限公司 A kind of radiator inside new-energy automobile charging pile
CN209692216U (en) * 2019-05-14 2019-11-26 北京通州开关有限公司 A kind of band cooling system box-type substation
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