CN101413622A - Dewar bottle - Google Patents
Dewar bottle Download PDFInfo
- Publication number
- CN101413622A CN101413622A CNA2008102194152A CN200810219415A CN101413622A CN 101413622 A CN101413622 A CN 101413622A CN A2008102194152 A CNA2008102194152 A CN A2008102194152A CN 200810219415 A CN200810219415 A CN 200810219415A CN 101413622 A CN101413622 A CN 101413622A
- Authority
- CN
- China
- Prior art keywords
- dewar vessel
- wall
- plastics
- dewar
- dewar flask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Packages (AREA)
Abstract
The invention discloses a Dewar flask, comprising a substrate which consists of an internal wall and an external wall; the surface of the internal wall is provided with a reflection material layer; the Dewar flask is characterized in that the substrate is made of plastic. Compared with the prior art, the Dewar flask has the advantages that the Dewar flask is easy to be formed and processed, has low cost and good heat insulation effect, is especially suitable for being designed as large-dimension opening structure, has light weight of plastic Dewar flask, has anti-impact strength which is far higher than the anti-impact strength of the glass and cost which is far lower than the cost of the metal Dewar flask, and is the opening low-temperature container which can be widely used.
Description
Technical field
The invention belongs to low-temperature (low temperature) vessel.
Background technique
Dewar vessel is the low-temperature (low temperature) vessel of using always, is mainly used in to deposit liquid nitrogen and as the container of the medium of low-temp reaction.
Dewar vessel is mainly as the container of the medium of low-temp reaction, metal organolithium in the organic synthesis and metal organic-magnesium (grignard reaction) often need react at-78 degree, this can realize low temperature by constantly add liquid nitrogen in ethanol, and Dewar vessel is exactly a container of displaying frozen ethanol.
Because the device of organic reaction is bigger, need the bigger container of opening.Have only glass Dewar vessel and metal Dewar bottle in the market, the glass Dewar vessel is frangible, difficult forming, metal Dewar bottle heaviness, costliness, the two all is difficult to make large-sized open containers, and the glass Dewar vessel and the diameter that almost do not have opening diameter to surpass 15 centimetres on the market surpass 20 centimetres metal Dewar bottle.Diameter is 20 centimetres a metal Dewar bottle (YDS-5-200 heavy caliber liquid nitrogen container), and price is up to thousands of units.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, the Dewar vessel that a kind of moulding is easy, cost is low is provided.
The technological scheme that realizes the object of the invention is as follows:
A kind of Dewar vessel comprises matrix, and matrix comprises inner and outer wall, and inner wall surface has one deck reflection material, it is characterized in that matrix is prepared from by plastics.
Further, in order can to vacuumize repeatedly, matrix is provided with and is used for valve that matrix is vacuumized.Further, described valve is arranged on the outer wall.
Further, described plastics are thermosetting plasticses such as thermoplastics such as polyethylene, polypropylene, polystyrene, ABS, PET polyester, polycarbonate (PC), polyamine ester or phenolic plastic, aminoplast, epoxy resin.
Further, described valve is made by plastics, metal, glass or stupalith.
Further, inwall is a sphere, and outer wall is cylinder type or sphere; Perhaps inwall, outer wall all are cylinder type.
Plastics thermal conductivity ratio glass is also little, and plastic processing becomes the pattern of Dewar vessel, can reach and surpass the insulation effect of glass Dewar vessel and metal Dewar bottle.
Compare with the glass Dewar vessel, plastics Dewar vessel shock resistance is strong, light weight, and machine shaping is convenient.
Compare with the metal Dewar bottle, plastics Dewar vessel cost is much lower.
Description of drawings
Fig. 1 is the schematic representation of the plastics Dewar vessel of vacuum-pumping.
Fig. 2 is that inwall is spherical, and outer wall is the Dewar vessel of cylinder type.
Fig. 3 is that the inwall outer wall all is the Dewar vessel of cylinder type.
Fig. 4 is that the inwall outer wall all is domed Dewar vessel.
Among the figure, the 1st, inwall, the 2nd, outer wall, the 3rd, valve.
Embodiment
Below in conjunction with accompanying drawing the present invention is done to describe further.
The plastics Dewar vessel has the essential characteristic of Dewar vessel as a kind of novel Dewar vessel:
1. plastics are basic thermoinsulation material.
2. the inwall of plastics Dewar vessel applies reflection materials such as silver color, white, reaches the purpose of reflective thermal radiation.
3. there is pore the inside of container wall, perhaps be vacuum state, but spare interface is to vacuumizing in the container wall.
4. the plastics Dewar vessel can be joined various vinyl covers, increases heat-shielding performance.
In order to realize these functions of plastics Dewar vessel, need to adopt corresponding processing, this processing with glass and metal Dewar bottle is different fully.Because the processing of plastic moulding is very convenient, can make various moulding.
The bottle cap of plastics Dewar vessel can be made up of a series of concentric circle, is used for the thermal insulation of the device of different size.Bottle cap adopts mobilizable bolt to connect, but convenient assembling and disassembling and add liquid nitrogen.
The plastics Dewar vessel that contains pore is meant that container adopts the expandable plastic once-through, because contain a large amount of gases, the heat-transfer coefficient of gas is lower in the expandable plastic, reaches adiabatic purpose.The machine shaping of this Dewar vessel is very simple, can adopt compression moulding and injection moulding once-through, and cost is low, the manufacturing efficiency height.
Adopt the method for electroplating or applying to cover silvery-white finish at inwall, reach the purpose of reflective thermal radiation.
Because the employing expandable plastic, the air in the bottle wall has certain heat-insulating property, but effect is not as vacuum.Introduce the making of several vacuum type plastics Dewar vessels below.
Embodiment's 2 vacuum type plastics Dewar vessels ()
Blowing is moulding means very efficiently, and die cost is low, is fit to the moulding of the plastics Dewar vessel of heavy caliber sphere.Fig. 4 is that opening diameter is two sphere plastics Dewar vessels of 20～30 centimetres, and the thickness of its inwall 1, outer wall 2 is generally 5～10mm, and the blow moulding and forming condition is as follows:
Resin adopts blowing level PET, the trade mark 8802.
By extruder, barrel zone temperature is about 280 ℃ of temperature with PET, and semi-finished product are made in cooling.The bottle embryo of moulding heats again, enters and carries out blowing in the blow mold, cooling, die sinking.The blowing mouth is processed into valve 3, is used to vacuumize.
Embodiment's 3 vacuum type plastics Dewar vessels (two)
Injection moulding can obtain accurate in size product, and the product strength height is not easy distortion.Injection mould cost height, and inwall 1 and outer wall 2 injection moulding processing respectively need be carried out adhesive solidification and just can be obtained finished product.The plastics Dewar vessel can be processed by injection moulding shown in Fig. 1～4.As Fig. 2 is that opening diameter is 20～30 centimetres a plastics Dewar vessel, and inwall 1 is a sphere, and outer wall 2 is cylindrical, and the thickness of its inwall 1, outer wall 2 is generally 5～10mm.The molding and forming condition is as follows:
Resin adopts injection grade HDPE, trade mark 2600J.
By double screw extruder, barrel zone temperature is about 210 ℃ of temperature with HDPE, and screw diameter 100mm adopts the vibration injection method, and injection pressure is 75Mpa, and vibration frequency is 1Hz.Inner and outer wall is made in cooling, and wherein valve 3 can once moulding on outer wall.
Inner and outer wall bondd be finished product.
Embodiment's 4 vacuum type plastics Dewar vessels (three)
The product intensity of thermosetting resin is very high, and deformation is little.Compression moulding does not need to use extruder, even can carry out hand pasting forming on mould.With inwall 1 and outer wall 2 difference compression moldings, carry out adhesive solidification again and just can obtain finished product.
As Fig. 3 is that opening diameter is 20～30 centimetres a plastics Dewar vessel, and inwall 1 and outer wall 2 all are cylindrical, and the thickness of its inwall 1, outer wall 2 is generally 5～10mm, and the molding and forming condition is as follows:
Resin adopts unsaturated resin, trade mark LY-191C.
Add curing agent in LY-191C after, hand is stuck with paste and is being scribbled on the mould of releasing agent, and room temperature is placed crosslinking curing after 6 hours, obtains inwall 1 and outer wall 2.Inwall 1 and outer wall 2 are bondd, at last valve 3 is bonded on the outer wall 2.
Be compared with the prior art, the advantage of plastics Dewar vessel is:
Be easy to shaping operation, with low cost, insulation effect is good.The plastics Dewar vessel especially is fit to be designed to large-sized hatch frame, and be difficult to find the Dewar vessel of this big opening on the market, the Dewar vessel price of 20 centimetres of bores is very high, this uses the low-temp reaction of big reaction device to cause difficulty to the laboratory, and the plastics Dewar vessel of big opening can be filled up this blank.Plastics Dewar vessel light weight, impact strength are far above glass, and cost is can widely used opening low-temperature (low temperature) vessel far below the metal Dewar bottle.
Practical application effect:
With the borate ester of 100ml tetrahydrofuran as the synthetic fluorenes of solvent, at the low-temp reactions 1 hour of-78 degree, adopt opening diameter be about 20 centimetres, the glass crystallising dish, plastic basin is as the ice bath container and adopt as shown in Figure 2 plastics Dewar vessel, metal Dewar bottle to compare.The result is as follows:
| Stainless steel basin | Glass dish | Plastic basin | The plastics Dewar vessel | The metal Dewar bottle | |
| The consumption of liquid nitrogen per hour | 10 liters | 8 liters | 5 |
1～1.3 |
1～1.2 liter |
| Outside frosting situation | A large amount of blooms | A large amount of blooms | A large amount of blooms | Almost do not have | Almost do not have |
| Price | ～20 | ～30 | ～10 | ～100 | ～1200 |
Claims (7)
1, a kind of Dewar vessel comprises matrix, and matrix comprises inner and outer wall, and inner wall surface has one deck reflection material, it is characterized in that matrix is prepared from by plastics.
2, Dewar vessel according to claim 1 is characterized in that: matrix is provided with and is used for valve that matrix is vacuumized.
3, Dewar vessel according to claim 2 is characterized in that: described valve is arranged on the outer wall.
4, Dewar vessel according to claim 3 is characterized in that described plastics are polyethylene, polypropylene, polystyrene, ABS, PET polyester, polycarbonate (PC), polyamine ester or phenolic plastic, aminoplast, epoxy resin.
5, Dewar vessel according to claim 3 is characterized in that described valve made by plastics, metal, glass or stupalith.
6, according to each described Dewar vessel of claim 1 to 5, it is characterized in that inwall is a sphere, outer wall is cylinder type or sphere.
7,, it is characterized in that inwall, outer wall all are cylinder type according to each described Dewar vessel of claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102194152A CN101413622A (en) | 2008-11-25 | 2008-11-25 | Dewar bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102194152A CN101413622A (en) | 2008-11-25 | 2008-11-25 | Dewar bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101413622A true CN101413622A (en) | 2009-04-22 |
Family
ID=40594285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102194152A Pending CN101413622A (en) | 2008-11-25 | 2008-11-25 | Dewar bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101413622A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168217A (en) * | 2010-10-14 | 2013-06-19 | 半导体器件-埃尔法特系统-拉法合伙公司 | Dewar assembly for IR detection systems |
| CN109003774A (en) * | 2018-06-26 | 2018-12-14 | 西南交通大学 | A kind of floating Dewar of high-temperature superconductor magnetic |
-
2008
- 2008-11-25 CN CNA2008102194152A patent/CN101413622A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103168217A (en) * | 2010-10-14 | 2013-06-19 | 半导体器件-埃尔法特系统-拉法合伙公司 | Dewar assembly for IR detection systems |
| CN103168217B (en) * | 2010-10-14 | 2015-01-14 | 半导体器件-埃尔法特系统-拉法合伙公司 | Dewar assembly for IR detection systems |
| CN109003774A (en) * | 2018-06-26 | 2018-12-14 | 西南交通大学 | A kind of floating Dewar of high-temperature superconductor magnetic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8430258B2 (en) | Synthetic resin hollow body | |
| CN102481702A (en) | Container, preform assembly and method and apparatus for forming containers | |
| CN110304331A (en) | The manufacturing method of clad vessel and clad vessel | |
| CN101413622A (en) | Dewar bottle | |
| CN101269548A (en) | Device and method for preparing composite material with resin transfer molding technique | |
| CN101593817B (en) | Cover plate of storage cell of commercial vehicle made of long glass fiber-reinforced polypropylene materials | |
| CN103240893A (en) | RTM (Resin transfer molding) technology for composite material molding | |
| CN108215249A (en) | A kind of composite laminated plate makes mold | |
| CN202208484U (en) | Anticorrosive lining of large glass fibre reinforced plastic storage tank | |
| CN1824486A (en) | Mould for water base pulp gel injection moulding | |
| CN204153131U (en) | The glass fibre reinforced plastics pressurized tank of a kind of new PE bladder layer and winding layer compound | |
| CN106115101A (en) | A kind of barrel-shaped container of large scale heavy caliber using fabricated structure | |
| CN101879780A (en) | Hot blow-suction molding device of plastic inspection well, and using method thereof | |
| CN202137957U (en) | RTM (resin transfer molding) soft mould | |
| CN213227343U (en) | Mould is used in production of good plastics bottle lid of heat dissipation | |
| CN105443751A (en) | Novel composite glass fiber reinforced plastic pressure tank composed of poly ethylene (PE) inner container layer and winding layer | |
| CN111216377B (en) | Forming method of composite material structural member | |
| CN211221841U (en) | No waste material changes notes forming die | |
| KR20180092594A (en) | Method for manufacturing container using carbon fiber structural material | |
| CN201728836U (en) | Hot blowing and suction molding device of plastic inspection well | |
| CN206013535U (en) | A kind of barrel-shaped container of the large scale heavy caliber of employing fabricated structure | |
| CN201206144Y (en) | Fibre reinforcement thermosetting resin base composite material methane discharging tank | |
| CN207028042U (en) | A kind of glue sealing structure of PDCPD material formings mould | |
| CN111906986A (en) | Forming method of power battery shell heat-insulating layer | |
| CN218083711U (en) | Glass steel product integral type forming die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090422 |