CN2058476U - Automatic blow head of liquid nitrogen dewar bottle - Google Patents
Automatic blow head of liquid nitrogen dewar bottle Download PDFInfo
- Publication number
- CN2058476U CN2058476U CN 89208123 CN89208123U CN2058476U CN 2058476 U CN2058476 U CN 2058476U CN 89208123 CN89208123 CN 89208123 CN 89208123 U CN89208123 U CN 89208123U CN 2058476 U CN2058476 U CN 2058476U
- Authority
- CN
- China
- Prior art keywords
- dewar
- liquid nitrogen
- nozzle
- heatproof
- resistance wire
- 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.)
- Withdrawn
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to an automatic injector for a liquid nitrogen dewar, comprising a nozzle (1), a press cover (2), a conduit (3), a partition board plug (4), a resistance wire (6), a decompressing nozzle (9), a voltage regulator M, a decompressing valve P, etc. The nozzle has a supporting and inserting connection with a liquid nitrogen dewar bottle. The resistance wire (6) is switched on to heat, which can cause the liquid nitrogen evaporated, and the pressure in the dewar bottle is increased and then the liquid nitrogen is ejected out automatically from the nozzle. The voltage regulator M and the decompressing valve P can be used to control the temperature in a long distance, which has the advantages of convenient operation and high safety, and provides conditions for automatic temperature control.
Description
The utility model relates to a kind of novel Dewar container for liquefied nitrogen bottle automatic nozzle, belongs to refrigeration temperature control technique field.
In known technology, when metal or other material when doing the low-temperature physics performance test research, generally to adopt liquid nitrogen in refrigeration plant, to set up evenly constant low temperature environment.Liquid nitrogen is contained in the Dewar vessel (L).And liquid nitrogen from the method that Dewar vessel (L) is transported to refrigeration plant mainly is: Dewar vessel (L) is mixed sealing head, feed high-pressure air or load onto pump, give pressurization in the Dewar vessel (L), make liquid nitrogen be pressed into refrigeration plant: what also have adorns air exhauster in refrigeration plant, give and make negative pressure in the Dewar vessel (L), make liquid nitrogen be inhaled into refrigeration plant.These carry the method for liquid nitrogen that deficiency is all arranged: as utilize high-pressure air, source of the gas is difficult for obtaining, and the place to use is limited by high-pressure air source, and manual pump is given Dewar vessel (L) pressurization, can make pressure at any time changing, be unfavorable for temperature control; Air exhauster is carried, and has increased the structure and the volume of refrigeration plant, and cost is increased.
The purpose of this utility model is to provide a kind of can overcome above-mentioned deficiency, and liquid nitrogen is taken out and may command Dewar container for liquefied nitrogen bottle automatic nozzle in Dewar vessel (L) automatically.
Design of the present utility model is to utilize the nonconducting characteristic of liquid nitrogen, put resistance wire (6) in the Dewar vessel (L) connection power supply by the Dewar vessel automatic nozzle, make resistance wire produce heat, and then make liquid nitrogen vaporization, pressing in the Dewar vessel increases, and liquid nitrogen is gushed out automatically from the nozzle of Dewar vessel automatic nozzle.
Below in conjunction with accompanying drawing, further specify the implementation process of this Dewar container for liquefied nitrogen bottle automatic nozzle.
Fig. 1 is the main schematic representation of looking of Dewar container for liquefied nitrogen bottle automatic nozzle assembling.
Fig. 2 is that schematic representation is looked on a Dewar container for liquefied nitrogen bottle automatic nozzle assembling left side.
Fig. 3 is that the gland master looks schematic representation.
Fig. 4 is the gland schematic top plan view.
Fig. 5 is the B-B cross-sectional schematic.
Fig. 6 is that dividing plate chock plug master looks schematic representation.
Fig. 7 is a dividing plate chock plug schematic top plan view.
Fig. 8 is that the pipe box master looks generalized section.
Fig. 9 is that Dewar container for liquefied nitrogen bottle automatic nozzle sprays schematic representation.
Figure 10 is that Dewar container for liquefied nitrogen bottle automatic nozzle A is to partial schematic diagram.
Dewar container for liquefied nitrogen bottle automatic nozzle is by nozzle (1), gland (2), conduit (3), dividing plate chock plug (4), heatproof insulation tube (5), resistance wire (6), wire board (7), pressure is chewed (9), draw ring (10), sleeve pipe (11), barometer joint (12), barometer (12), heatproof spaghetti (15), head (16) is protected in the heatproof insulation, pressure governor M and Decompression valves portion form.
The nozzle (1) of Dewar container for liquefied nitrogen bottle automatic nozzle and gland (2) screwed connection; Dividing plate chock plug (4) and gland hole (23) close fit on soldering connecting duct (3) and the dividing plate chock plug (4), heatproof insulation tube (5) is contained on the hole (24) of dividing plate chock plug (4), and dividing plate chock plug 1-3mm slightly is longer than at two; Resistance wire (6) is drawn the lead riser of two strip adoption insulation processing from the endoporus of heatproof insulation tube (5); The about 0.1-0.5mm of resistance wire (6) diameter, make the spiral winding, screw diameter is φ 2-6 mm, long is 20-80mm, resistance is 10-60 ohm, supply voltage is less than 60 volts, resistance wire passes heatproof spaghetti (15), the resistance wire spiral part is exposed outside, the top puts the heatproof insulation and protects head (16), head (16) is protected in heatproof spaghetti (15), heatproof insulation tie together together with resistance wire (6) and conduit (3).
Hole (20) close fit on dividing plate chock plug (4) and the gland (2), hole (20) are divided into sky chamber (18) and jet chamber (19), pull out the lead riser of resistance wire (6) from empty chamber (18), be connected on the wire board (7), and with heatproof plastic material (14) fill plug seal that insulate, external pressure governor M is with the temperature of pressure governor M regulating and controlling resistance wire.
Insert movingly with the neck support of Dewar vessel with the hole (20) of (27) dividing plate chock plug lower end (25) close fit, lower end in hole with sleeve pipe (11) upper end, and the interior shoulder of Dewar bottleneck top and sleeve pipe (11) (30) grinds tight contact matching; Two holes (26) (28) of sleeve pipe (11) side are chewed (9) with barometer joint (12) pressure release respectively and are connected, barometer joint (12) is gone up barometer (13) is installed, pressure release is chewed (9) and is joined with conduit and pressure relief valve portion, when Dewar vessel (L) is connected with Dewar container for liquefied nitrogen bottle automatic nozzle, form pressure releasing chamber between Dewar bottleneck top and the dividing plate chock plug.
In order to ensure safety, this shower nozzle is pressed in also having barometer (13) indication Dewar vessel (L), also hook with hook C and shower nozzle draw ring (10), hook C is connected with Dewar vessel (L) handle with elastic component d, in case Dewar vessel (L) internal pressure surpasses setting pressure, Dewar container for liquefied nitrogen bottle automatic nozzle can have been dashed pressure release, and this shower nozzle can be withdrawn into original position by the elastic force of elastic component d after the pressure release.
Dewar container for liquefied nitrogen bottle automatic nozzle is compared with original technology, and major advantage is: replace high-pressure air source pump or air exhauster with resistance wire (6) heating, simple in structure, use flexible, safe and reliable; And owing to designed jet chamber (19) and pressure releasing chamber (31) temperature control is even; Dewar container for liquefied nitrogen bottle automatic nozzle and Dewar vessel (L) adopt the support inserting to close simultaneously, can be connected use with a plurality of Dewar vessels (L).
The utility model and the L of Shanghai Twilight machinery plant
15The Dewar vessel coupling, form DD-10-3 Low-Temperature Fracture Toughness testing apparatus, it is 0.3mm that resistance wire (6) is selected diameter for use, resistance is 27 ohm a nickel chrome wire, the coiled external diameter is the spiral winding of 4 mm, and length overall pulls into the 70mm heatproof insulating material and selects quartz tube for use.The packing material (14) of empty chamber (18) is selected the sealing of emery mix 502 glue for use.Grinding the institute thing chamber of grinding at the Taiyuan Iron and Steel Co. steel is applied.Surplus the Low-Temperature Fracture Toughness of successively having made steel grades such as D60,40 Mn Mo V, 14 Mn Nb B tests 5000.Facts have proved, with Dewar container for liquefied nitrogen bottle automatic nozzle the liquid nitrogen in the Dewar vessel (L) is transported in the refrigeration plant, voltage-regulation temperature control at a distance, easy to use flexible, safe and reliable, reach its intended purposes, and be the automation of refrigeration temperature control; Condition is provided.Has the value of applying.
Claims (2)
1, Dewar container for liquefied nitrogen bottle automatic nozzle, nozzle (1), conduit (3) are arranged, it is characterized in that this model utility includes also that gland (2), dividing plate chock plug (4), heatproof insulation tube (5) resistance wire (6), wire board (7), pressure release are chewed (9), draw ring (10), sleeve pipe (11) barometer joint (12), barometer (13), heatproof spaghetti (15), head (16), pressure governor M and Decompression valves P are protected in the heatproof insulation.
2, Dewar container for liquefied nitrogen bottle automatic nozzle according to claim 1 is characterized in that:
A, head (16) protected in heatproof spaghetti (15) heatproof insulation tie together together with resistance wire (6) and conduit (3),
B, gland (2) cooperate with dividing plate chock plug (4), constitute empty chamber (18) and jet chamber (19), and empty chamber (18) use sealing material (14) sealing then as the extraction mouth of resistance wire (6) lead riser,
When c, use, adopt support to insert with Dewar vessel (1) and be connected, and hook with hook c and draw ring (10), link up with (be connected with elastic component d and Dewar vessel (L) handle,
D, with Dewar vessel (L) when being connected, form between Dewar vessel (L) neck top and the dividing plate chock plug and drag pressure chamber (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208123 CN2058476U (en) | 1989-05-31 | 1989-05-31 | Automatic blow head of liquid nitrogen dewar bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208123 CN2058476U (en) | 1989-05-31 | 1989-05-31 | Automatic blow head of liquid nitrogen dewar bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058476U true CN2058476U (en) | 1990-06-20 |
Family
ID=4864858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89208123 Withdrawn CN2058476U (en) | 1989-05-31 | 1989-05-31 | Automatic blow head of liquid nitrogen dewar bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926082A (en) * | 2019-11-20 | 2020-03-27 | 安徽民祯活性包装材料有限公司 | Fresh-keeping box for remote transportation and continuous cold supply system |
| CN111595079A (en) * | 2020-05-15 | 2020-08-28 | Tcl家用电器（合肥）有限公司 | Fixing device and refrigerator |
-
1989
- 1989-05-31 CN CN 89208123 patent/CN2058476U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110926082A (en) * | 2019-11-20 | 2020-03-27 | 安徽民祯活性包装材料有限公司 | Fresh-keeping box for remote transportation and continuous cold supply system |
| CN111595079A (en) * | 2020-05-15 | 2020-08-28 | Tcl家用电器（合肥）有限公司 | Fixing device and refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: LI NINGGUI TO: LI SHOUGUI |
|
| CU01 | Correction of utility model patent |
Correction item: Designer Correct: Li Shougui False: Li Ninggui Page: The title page |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Designer Correct: Li Shougui False: Li Ninggui Number: 25 Page: 61 Volume: 6 |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |