CN207413701U - A kind of liquid nitrogen nozzle defroster - Google Patents
A kind of liquid nitrogen nozzle defroster Download PDFInfo
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- CN207413701U CN207413701U CN201721035218.6U CN201721035218U CN207413701U CN 207413701 U CN207413701 U CN 207413701U CN 201721035218 U CN201721035218 U CN 201721035218U CN 207413701 U CN207413701 U CN 207413701U
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- liquid nitrogen
- import
- reversal valve
- nozzle
- defroster
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Abstract
The utility model discloses a kind of liquid nitrogen nozzle defrosters, belong to aircraft defroster design field.Including：Liquid nitrogen container, reversal valve, liquid nitrogen nozzle and nitrogen cylinder；Reversal valve is set there are two import and one outlet, when reversal valve is in running order, an import and one outlet is kept to be in opening state, another import is closed；The import connection of liquid nitrogen container and reversal valve, another import connection of nitrogen cylinder and reversal valve；The outlet of reversal valve is connected with liquid nitrogen nozzle import, and the outlet of liquid nitrogen nozzle is connected with cryogenic pipe；Liquid nitrogen container holds liquid nitrogen, and nitrogen cylinder is contained with high-pressure gaseous nitrogen.The utility model liquid nitrogen nozzle defroster, under the percussion of high pressure draught, the vapor in cryogenic pipe cannot inversely flow into liquid nitrogen nozzle, be unlikely resident, congeal into ice herein, from ensuring the unobstructed of liquid nitrogen nozzle；Its is simple in structure, cheap, is easily achieved, and antifreezing effect is notable.
Description
Technical field
The utility model belongs to aircraft defroster design field, and in particular to a kind of liquid nitrogen nozzle defroster.
Background technology
The low temperature control of the temperature fatigue experiment of military aircraft component is substantially former mainly using liquid nitrogen refrigerating technology at present
Reason is that liquid nitrogen is sprayed into cryogenic pipe by nozzle to cycle, and the principle largely absorbed heat using liquid nitrogen gasification is cooled down.But exist
Following defect：
When out-of-date there is no liquid nitrogen stream in liquid nitrogen nozzle, the vapor in cryogenic pipe at this time, inversely into liquid nitrogen nozzle,
It congeals into ice under the cooling of residual liquid nitrogen, since liquid nitrogen nozzle is frozen in, it is necessary to when spraying liquid nitrogen again, liquid nitrogen also can not be from
Liquid nitrogen nozzle flows out.
Utility model content
The purpose of this utility model：To solve the above-mentioned problems, the utility model proposes a kind of antifreeze dresses of liquid nitrogen nozzle
It puts, uninterruptedly sprays into nitrogen to nozzle by the way of additional gas sources, prevent the gas of cryogenic pipe from entering nozzle and icing.
A kind of liquid nitrogen nozzle defroster of the technical solution of the utility model, which is characterized in that including：Liquid nitrogen container, commutation
Valve, liquid nitrogen nozzle and nitrogen cylinder；
The reversal valve is set there are two import and one outlet, when the reversal valve is in running order, is kept for one
Import and one outlet are in opening state, another import is closed；
The liquid nitrogen container is connected with an import of the reversal valve, and another import of the nitrogen cylinder and the reversal valve connects
It connects；
The outlet of the reversal valve is connected with the liquid nitrogen nozzle import, the outlet of the liquid nitrogen nozzle and the cryotronl
Road connects；
The liquid nitrogen container holds liquid nitrogen, and the nitrogen cylinder is contained with high-pressure gaseous nitrogen.
Preferably, the liquid nitrogen container is connected by vacuum liquid nitrogen pipe with the import A of the reversal valve, and the nitrogen cylinder passes through
High-pressure air pipe is connected with the import B of the reversal valve.
Preferably, the nitrogen cylinder is connected by high-pressure air pipe with the import A of the reversal valve, and the liquid nitrogen container passes through true
Empty liquid nitrogen pipe is connected with the import B of the reversal valve.
Preferably, the liquid nitrogen nozzle is connected by vacuum liquid nitrogen pipe with the outlet C of the reversal valve.
Preferably, be provided with temperature sensor in the cryogenic pipe, the temperature sensor by controller with it is described
Reversal valve connects.
Preferably, the nitrogen pressure of the nitrogen cylinder is more than the gas pressure of the cryogenic pipe.
The advantageous effects of technical solutions of the utility model：The utility model liquid nitrogen nozzle defroster, in high pressure gas
Under the percussion of stream, the vapor in cryogenic pipe cannot inversely flow into liquid nitrogen nozzle, be unlikely resident, condense into herein
Ice, from ensuring the unobstructed of liquid nitrogen nozzle；Its is simple in structure, cheap, is easily achieved, and antifreezing effect is notable.
Description of the drawings
Fig. 1 is the structure diagram of a preferred embodiment of the utility model liquid nitrogen nozzle defroster；
Wherein, 1- liquid nitrogen containers, 2- reversal valves, 3- liquid nitrogen nozzles, 4- nitrogen cylinders, 5- vacuum liquid nitrogen pipes, 6- high-pressure air pipes.
Specific embodiment
To make the purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model
Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.In the accompanying drawings, from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Described reality
It is the utility model part of the embodiment to apply example, instead of all the embodiments.Below with reference to the embodiment of attached drawing description
It is exemplary, it is intended to for explaining the utility model, and it is not intended that limitation to the utility model.It is new based on this practicality
Embodiment in type, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.The embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structure composition schematic diagram of the utility model liquid nitrogen nozzle defroster；
A kind of liquid nitrogen nozzle defroster, including：Liquid nitrogen container 1, reversal valve 2, liquid nitrogen nozzle 3 and nitrogen cylinder 4；
Reversal valve 2 is set there are two import and one outlet, when reversal valve 2 is in running order, keep an import and
One outlet is in opening state, another import is closed；
Liquid nitrogen container 1 is connected with an import of reversal valve 2, and nitrogen cylinder 4 is connected with another import of reversal valve 2；
The outlet of reversal valve 2 is connected with 3 import of liquid nitrogen nozzle, and the outlet of liquid nitrogen nozzle 3 is connected with cryogenic pipe；
Liquid nitrogen container 1 holds liquid nitrogen, is beaten when the import and the outlet of reversal valve 2 that reversal valve 2 is connected with liquid nitrogen container 1 are in
Open state, when another import is closed, the liquid nitrogen in liquid nitrogen container 1 is ejected into through liquid nitrogen nozzle 3 in cryogenic pipe.
Nitrogen cylinder 4 is contained with high-pressure gaseous nitrogen, is wanted when the temperature in the cryogenic pipe to be cooled down has met cooling
It asks, when should stop to cryogenic pipe injection liquid nitrogen, the import that reversal valve 2 is connected with liquid nitrogen container 1 should be closed, and open reversal valve
2 imports being connected with nitrogen cylinder 4 are opened, and liquid nitrogen nozzle 3 and the gas pressure of cryogenic pipe junction is made to be more than cryogenic pipe
Gas pressure prevents that the gas containing vapor enters liquid nitrogen nozzle 3 in cryogenic pipe.
In the present embodiment, reversal valve 2 is two-bit triplet solenoid valve, is provided with import A, import B and one outlet C, energy
Enough realize the automatic switchover of two kinds of mode of communicating (A → C or B → C).
It is to be appreciated that：Reversal valve 2 can carry out import A, import B, the closing for exporting C or opening manually, exist respectively
Import A, import B, outlet C set shut-off valve, and connection in a cavity, realizes intercommunication to three shut-off valves jointly.
In the present embodiment, liquid nitrogen container 1 is connected by vacuum liquid nitrogen pipe with the import A of reversal valve 2, and liquid nitrogen nozzle 3 is by true
Empty liquid nitrogen pipe is connected with the outlet C of reversal valve 2；
Vacuum liquid nitrogen pipe has good heat insulation effect, makes liquid nitrogen during transmission, will not absorb external heat
Liquid nitrogen temperature is raised, keeps its good cooling-down effect.
Vacuum liquid nitrogen pipe makes liquid nitrogen in transportational process, keeps avoiding icing phenomenon there is no vapor in liquid nitrogen
Occur.
In the present embodiment, nitrogen cylinder 4 is connected by high-pressure air pipe with the import B of reversal valve 2, because since nitrogen cylinder is stored
Gases at high pressure, gases at high pressure, which can be quickly sent in nitrogen cylinder, to be sprayed, and arrives at the junction of hydraulic pressure nozzle 3 and cryogenic pipe,
To prevent common pipeline from occurring the phenomenon that booster in use, therefore high-pressure air pipe is selected to improve device as connecting line
Reliability.
It is appreciated that：Another scheme that nitrogen cylinder 4 and liquid nitrogen container 1 are connected with reversal valve 2：Nitrogen cylinder 4 passes through height
The import A connections of air pipe and reversal valve, liquid nitrogen container 1 pass through the import B connections of vacuum liquid nitrogen pipe and reversal valve, such connection side
Formula does not influence the anti-refrigerating effect of liquid nitrogen nozzle 3.
In the present embodiment, temperature sensor is provided in cryogenic pipe, temperature sensor passes through controller and two-bit triplet
Solenoid valve connects；
The target temperature of setting cryogenic pipe in controller, when in temperature sensor acquisition pipeline actual temperature and controller
Target temperature comparison after, controller sends the switching of the mode of communicating of corresponding order control two-bit triplet solenoid valve.
In the present embodiment, the nitrogen pressure of nitrogen cylinder 4 is more than the gas pressure of cryogenic pipe, prevents the water of cryogenic pipe from steaming
Gas enters liquid nitrogen nozzle 3 and generates icing phenomenon.
It is appreciated that：The nitrogen pressure of nitrogen cylinder 4 can be suitable with the gas pressure of cryogenic pipe.
The present apparatus is as follows using process：
After temperature-fall period in cryogenic pipe is opened, the coil of 23 three-way electromagnetic valves is powered, and liquid nitrogen is flowed out from liquid nitrogen container 1,
Liquid nitrogen nozzle 3 is flowed into through 23 three-way electromagnetic valves, is ejected into cryogenic pipe and realizes temperature-fall period.
After temperature-fall period, the coil blackout of 23 three-way electromagnetic valves, high pressure nitrogen is flowed out from nitrogen cylinder 4, logical through 23
Solenoid valve sprays into liquid nitrogen nozzle 3.
Under the percussion of air-flow, the vapor in cryogenic pipe cannot inversely flow into liquid nitrogen nozzle, unlikely exist
This is resident, congeals into ice, from ensuring the unobstructed of liquid nitrogen nozzle.
When temperature of the previous liquid nitrogen nozzle in cryogenic pipe is down to less than 0 DEG C, what freezing just occurred in liquid nitrogen nozzle shows
As liquid nitrogen can not be sprayed.After employing liquid nitrogen nozzle defroster, when temperature is down to -100 DEG C in cryogenic pipe, liquid nitrogen nozzle
Still keep clear.
The utility model liquid nitrogen mouth defroster is simple in structure, it is cheap, be easily achieved, antifreezing effect is notable.
It is last it is to be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System.Although the utility model is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should manage
Solution：It can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the utility model
The spirit and scope of technical solution.
Claims (7)
1. a kind of liquid nitrogen nozzle defroster, which is characterized in that including：Liquid nitrogen container (1), reversal valve (2), liquid nitrogen nozzle (3) and
Nitrogen cylinder (4)；
The reversal valve (2) is set there are two import and one outlet, when the reversal valve (2) is in running order, keeps one
A import and one outlet are in opening state, another import is closed；
The liquid nitrogen container (1) is connected with an import of the reversal valve (2), and the nitrogen cylinder (4) is another with the reversal valve (2)
One import connects；
The outlet of the reversal valve (2) is connected with the liquid nitrogen nozzle (3) import, the outlet of the liquid nitrogen nozzle (3) and low temperature
Pipeline connects；
The liquid nitrogen container (1) holds liquid nitrogen, and the nitrogen cylinder (4) is contained with high-pressure gaseous nitrogen.
2. liquid nitrogen nozzle defroster as described in claim 1, it is characterised in that：The reversal valve (2) is two-bit triplet electricity
Magnet valve is provided with import A, import B and one outlet C.
3. liquid nitrogen nozzle defroster as claimed in claim 2, it is characterised in that：The liquid nitrogen container (1) passes through vacuum liquid nitrogen
Pipe is connected with the import A of the reversal valve (2), and the nitrogen cylinder (4) passes through high-pressure air pipe and the import B of the reversal valve (2)
Connection.
4. liquid nitrogen nozzle defroster as claimed in claim 2, it is characterised in that：The nitrogen cylinder (4) passes through high-pressure air pipe
It is connected with the import A of the reversal valve (2), the liquid nitrogen container (1) passes through vacuum liquid nitrogen pipe and the import B of the reversal valve (2)
Connection.
5. liquid nitrogen nozzle defroster as claimed in claim 2, it is characterised in that：The liquid nitrogen nozzle (3) passes through vacuum liquid
Nitrogen pipe is connected with the outlet C of the reversal valve (2).
6. liquid nitrogen nozzle defroster as claimed in claim 2, it is characterised in that：Temperature biography is provided in the cryogenic pipe
Sensor, the temperature sensor are connected by controller with the two-bit triplet solenoid valve.
7. liquid nitrogen nozzle defroster as described in claim 1, it is characterised in that：The nitrogen pressure of the nitrogen cylinder (4) is big
In the gas pressure of the cryogenic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035218.6U CN207413701U (en) | 2017-08-18 | 2017-08-18 | A kind of liquid nitrogen nozzle defroster |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035218.6U CN207413701U (en) | 2017-08-18 | 2017-08-18 | A kind of liquid nitrogen nozzle defroster |
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| CN207413701U true CN207413701U (en) | 2018-05-29 |
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| CN201721035218.6U Active CN207413701U (en) | 2017-08-18 | 2017-08-18 | A kind of liquid nitrogen nozzle defroster |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483513A (en) * | 2021-09-07 | 2021-10-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Water-absorbable ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
| CN113483511A (en) * | 2021-09-07 | 2021-10-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
-
2017
- 2017-08-18 CN CN201721035218.6U patent/CN207413701U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483513A (en) * | 2021-09-07 | 2021-10-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Water-absorbable ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
| CN113483511A (en) * | 2021-09-07 | 2021-10-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
| CN113483511B (en) * | 2021-09-07 | 2021-11-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
| CN113483513B (en) * | 2021-09-07 | 2021-11-09 | 中国空气动力研究与发展中心低速空气动力研究所 | Water-absorbable ice-shaped cutter, ice-shaped measuring device and ice-shaped measuring method |
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