CN206817841U - A kind of novel energy-conserving liquid nitrogen refrigerating system - Google Patents
A kind of novel energy-conserving liquid nitrogen refrigerating system Download PDFInfo
- Publication number
- CN206817841U CN206817841U CN201720686724.5U CN201720686724U CN206817841U CN 206817841 U CN206817841 U CN 206817841U CN 201720686724 U CN201720686724 U CN 201720686724U CN 206817841 U CN206817841 U CN 206817841U
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- casing
- door body
- liquid nitrogen
- packing
- graphite
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 238000012856 packing Methods 0.000 claims abstract description 59
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 35
- 239000010439 graphite Substances 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000741 silica gel Substances 0.000 claims abstract description 28
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000002045 lasting effect Effects 0.000 description 4
- 229920000260 silastic Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Refrigerator Housings (AREA)
Abstract
The utility model discloses a kind of novel energy-conserving liquid nitrogen refrigerating system, including from supercharging liquid nitrogen container, filter, high-frequency impulse magnetic valve, capillary, chamber operating room and controller, and temperature inductor is provided with chamber operating room.Chamber operating room includes casing, door body and sealing structure, sealing structure includes the polytetrafluoroethylsealed sealed packing of graphite, silica gel sealing packing and self limiting temperature heating tape, casing is connected with door body and the polytetrafluoroethylsealed sealed packing of graphite is correspondingly provided with the inside of gap, and silica gel sealing packing is installed in door body and positioned at the outside in connection space.The utility model can be controlled in a cycle the time for opening and closing nitrogen, keep the constant of the temperature in chamber operating room, reduce liquid nitrogen consumption, and it is not required to heater heating balance, reduce energy consumption, chamber operating room can be effectively accomplished sealing effectiveness, be reduced energy consumption at low temperature using the polytetrafluoroethylsealed sealed packing of graphite and the inside and outside double-layer seal of silica gel sealing packing simultaneously.
Description
Technical field
It the utility model is related to environmental test equipment technical field, and in particular to a kind of novel energy-conserving liquid nitrogen refrigerating system.
Background technology
In environmental test equipment low-temperature test, common mechanical refrigeration single-stage can arrive -40 DEG C or so, and two-stage refrigeration can arrive -
80 DEG C or so, three-level refrigeration can arrive -120 DEG C or so.If needing lower temperature to test again, liquid nitrogen refrigerating, ability need to be just used
Reach requirement, minimum reachable -190 DEG C or lower of liquid nitrogen refrigerating, -196 DEG C of liquid nitrogen vaporization temperature under normal pressure, chamber in theory can
Approached -196 DEG C of temperature.
Because science and technology, the development of scientific experimentation, each R＆D institution, requirement of the military enterprise to temperature are more and more tighter
Extremely, low temperature requirements will reach less than -100 DEG C, until -190 DEG C, conventional liquid nitrogen refrigerating system, Fig. 1 and Fig. 2 are referred to, by increasing certainly
Press liquid nitrogen container 1 ', filter 2 ', the first magnetic valve 3 ', second solenoid valve 4 ', the first capillary 5 ', the second capillary 6 ', pipeline
7 ' form with experimental box operating room 8 ', described from supercharging liquid nitrogen container 1 ', filter 2 ', the first magnetic valve 3 ', the first capillary 5 '
First connection line is formed by pipeline 7 ' and chamber operating room 8 '.Certainly the supercharging liquid nitrogen container 1 ', filter 2 ', second
Magnetic valve 4 ', the second capillary 6 ' pass through pipeline 7 ' and chamber operating room, and ' 8 form Article 2 connection line, wherein first mao
The flow of tubule 5 ' is more than the second capillary 6 '.Its operation principle is：The liquid nitrogen of certain pressure is transferred out from supercharging liquid nitrogen container 1 ', is led to
Filter 2 ', the first magnetic valve 3 ' are crossed, after the reducing pressure by regulating flow of the first capillary 5 ' of big flow, liquid nitrogen will work in experimental box
The evaporative cooling of room 8 ', the lasting output of liquid nitrogen, temperature just lasting decline, when low temperature needed for temperature drops to, pass through and control system
System the first magnetic valve 3 ' of control is closed, and second solenoid valve 4 ' is opened, after the second capillary 6 ' throttling of low discharge, into experiment
The evaporative cooling of case operating room 8 ', but its flow does not accurately control, therefore, it is desirable to which temperature is constant, it is necessary to by setting
The electric heater 9 ' being placed in chamber operating room 8 ' heats, to balance the refrigerating capacity of liquid nitrogen, so as to reach the stabilization of temperature.
Temperature is under -100 DEG C~-190 DEG C of low temperature condition in chamber operating room 8 ', if chamber operating room 8 is using conventional pair
Layer silastic sealing strip 10 ' and the sealing of doorframe heating tape 11 ' preheating method, the minimum temperature that silastic sealing strip 10 ' is resistant to-
More than 80 DEG C, less than -80 DEG C silastic sealing strips 10 ', which will be hardened, to become fragile, and loses the effect of sealing.
In summary, there is problems with conventional liquid nitrogen refrigerating system：
1st, after being throttled due to the second capillary 6 ', its flow does not accurately control, therefore, it is desirable to which temperature is constant, just
Need to heat by the electric heater 9 ' being arranged in chamber operating room 8 ', to balance the refrigerating capacity of liquid nitrogen, therefore liquid nitrogen needs
Continual output is wanted, the consumption of liquid nitrogen can be caused very big, need electrical heating to balance when temperature is constant, so as to increase again
The consumption of the energy.
2nd, because the optimal seal temperature of silica gel sealing packing 10 ' is -70 DEG C, flexibility is good, and air-tightness is good, sealing effect
Fruit is good, increases the pre- hot function of heating tape doorframe, silastic sealing strip seal temperature most multipotency can be made to reach -100 DEG C, therefore,
The chamber operating room 8 ' uses the conventional sealing means of silica gel sealing packing 10 ', can not meet its seal request, due to
Required heating tape doorframe warm-up power is larger, has the consumption of considerable part refrigerating capacity in preheating, wastes the energy, and sealing effectiveness
It is not very good, causes cool air leakage, makes frosting between doorframe and gate, icing, condensate.
Utility model content
For above-mentioned deficiency, the purpose of this utility model is, there is provided a kind of novel energy-conserving liquid nitrogen refrigerating system, passes through temperature
Signal is passed to high-frequency impulse magnetic valve and controlled in a cycle by degree inductor induced test case work indoor temperature change generated in case
The interior time for opening and closing nitrogen, the constant of temperature in chamber operating room is kept, reduces liquid nitrogen consumption, and be not required to
Heater heating balance, reduces energy consumption, while the chamber operating room uses the polytetrafluoroethylsealed sealed packing of graphite and silica gel sealing
The inside and outside double-layer seal of packing, can be effectively accomplished sealing effectiveness at low temperature, improve the sealing effectiveness of chamber operating room,
Reduce energy consumption.
To achieve the above object, technical scheme provided by the utility model is：
A kind of novel energy-conserving liquid nitrogen refrigerating system, including supercharging liquid nitrogen container, filter, high-frequency impulse magnetic valve, capillary certainly
Pipe, chamber operating room and controller.It is described to pass through pipe from supercharging liquid nitrogen container, filter, high-frequency impulse magnetic valve and capillary
Road is sequentially connected and is linked into chamber operating room, and temperature inductor is provided with the chamber operating room.The experiment
Case operating room includes casing, door body and sealing structure, and the door body is articulated with casing by hinge.The sealing structure is set
In the connection gap of casing and the both sides of door body, the sealing structure includes the polytetrafluoroethylsealed sealed packing of graphite, silica gel sealing packing
With self limiting temperature heating tape, the casing connects with door body is correspondingly provided with the polytetrafluoroethylsealed sealed packing of the graphite, institute on the inside of gap
State silica gel sealing packing to be installed in door body and positioned at the outside in the connection space, the self limiting temperature heating tape is arranged at silica gel
On casing and door body at sealed packing.The high-frequency impulse magnetic valve and temperature inductor are electrically connected at the controller.
Preferably, the casing is enclosed and formed by casing housing and casing inside casing, and the company of casing housing and casing inside casing
Depression forms mounting groove upwards at the place of connecing, and the polytetrafluoroethylsealed sealed packing of the graphite is installed in mounting groove, the door body by door body outside
Frame and door body inside casing are enclosed and formed, and depression forms mounting groove, the graphite downwards for the junction of door body housing and door body inside casing
Polytetrafluoroethylsealed sealed packing is installed in mounting groove, when door body is closed, the polytetrafluoroethylsealed sealed packing of graphite and door of installing in the casing
The polytetrafluoroethylsealed sealed packing of graphite installed in vivo, which contacts with each other, to press together.
Preferably, it is respectively equipped with heat-insulation layer in the casing and door body.
Preferably, the sealing structure also includes multiple thermal insulation boards, the junction of the casing housing and casing inside casing it
Between be provided with the thermal insulation board, be provided with the thermal insulation board between the junction of the door body housing and door body inside casing.
Preferably, the junction of the casing and door body is set to stepped, flat including the first platform and second from inside to outside
Platform, the polytetrafluoroethylsealed sealed packing of graphite are arranged on the first platform, and the self limiting temperature heating tape and silica gel sealing packing are arranged at
On second platform.
The beneficial effects of the utility model are：
1st, the utility model is detected in chamber operating room by the temperature inductor set in the chamber operating room
Temperature change, and by signal pass to controller control high-frequency impulse magnetic valve the unlatching of nitrogen is controlled in some cycles when
Between and the shut-in time, to reach the flow entered in chamber operating room of control liquid nitrogen, so as to reach chamber work Indoor Temperature
Constant purpose is spent, reduces liquid nitrogen consumption, and is not required to heater heating balance, reduces energy consumption；
2nd, the polytetrafluoroethylsealed sealed packing of graphite that the chamber operating room uses can be resistant to minimum temperature can also protect for -200 DEG C
Flexibility is held, is hardened without becoming fragile, therefore using the polytetrafluoroethylsealed sealed packing of graphite as first layer sealing structure, chamber can be stopped
Interior most of cold air leakage, make casing and door body both sides connection space on the outside of temperature bring up to more than -80 DEG C, then
By being arranged at the silica gel sealing packing_seal in outside, and heated by self limiting temperature heating tape, and then the temperature in outside can reach
The optimal seal temperature of normal silica gel sealing packing, therefore, the utility model is close by the polytetrafluoroethylsealed sealed packing of graphite and silica gel
The double-layer seal design of closing disk root, can effectively ensure the sealing property of casing and door body, improve experiment under cryogenic
The sealing effectiveness of case operating room, reduces energy consumption.
Below in conjunction with the accompanying drawings with embodiment, the utility model is further illustrated.
Brief description of the drawings
Accompanying drawing is to be further understood for providing to of the present utility model, and a part for constitution instruction, and following
Embodiment be used to explain the utility model together, but do not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the structural representation of the liquid nitrogen refrigerating system of prior art.
Fig. 2 is the enlarged drawing at the silica gel sealing packing of liquid nitrogen refrigerating system described in Fig. 1.
Fig. 3 is a kind of structural representation of novel energy-conserving liquid nitrogen refrigerating system of the utility model.
Fig. 4 is the enlarged drawing at a kind of sealing structure of novel energy-conserving liquid nitrogen refrigerating system shown in Fig. 3.
Each description of reference numerals is as follows in figure.
From supercharging liquid nitrogen container -1 ', filter -2 ', the first magnetic valve -3 ', second solenoid valve -4 ', the first capillary
Manage the -5 ', second capillary -6 ', pipeline -7 ', experimental box operating room -8 ', electric heater -9 ', silica gel sealing packing -
10 ', from supercharging liquid nitrogen container -1, filter -2, high-frequency impulse magnetic valve -3, capillary -4, chamber operating room -5, case
Body -51, casing housing -511, casing inside casing -512, door body -52, door body housing -521, door body inside casing -522, sealing
Structure -53, polytetrafluoroethylsealed sealed packing -531 of graphite, silica gel sealing packing -532, self limiting temperature heating tape -533, thermal insulation board -
534th, hinge -54, pipeline -6, temperature inductor -7, heat-insulation layer -8, the first platform -9, the second platform -10.
Embodiment
To describe technology contents of the present utility model, construction feature, the objects and the effects in detail, below in conjunction with implementation
Mode simultaneously coordinates accompanying drawing to be explained in detail.
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope., it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " interior ", " outer " are based on orientation shown in the drawings or position
Relation, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Refer to Fig. 3 and Fig. 4, a kind of novel energy-conserving liquid nitrogen refrigerating system, including supercharging liquid nitrogen container 1, filter 2, height certainly
Frequency impulse electromagnetic valve 3, capillary 4, chamber operating room 5 and controller.Certainly the supercharging liquid nitrogen container 1, filter 2, high frequency arteries and veins
Magnetic valve 3 and capillary 4 is rushed to be sequentially connected and be linked into chamber operating room 5 by pipeline 6, and the chamber operating room
Temperature inductor 7 is provided with 5, controller control is passed to for detecting the temperature change in chamber operating room 5, and by signal
High-frequency impulse magnetic valve 3 controls the opening time and shut-in time of nitrogen in some cycles, enters to try to reach control liquid nitrogen
Flow in tryoff operating room 5, so as to reach the purpose that temperature is constant in chamber operating room 5.The chamber operating room 5 is wrapped
Casing 51, door body 52 and sealing structure 53 are included, the door body 52 is articulated with casing 51 by hinge 54.The sealing structure 53
Be arranged at the connection gap of the both sides of casing 51 and door body 52, the sealing structure 53 include the polytetrafluoroethylsealed sealed packing 531 of graphite,
Silica gel sealing packing 532 and self limiting temperature heating tape 533, the casing 51 and door body 52 connect and are correspondingly provided with institute on the inside of gap
State the polytetrafluoroethylsealed sealed packing 531 of graphite, when door body 52 is closed, in the casing 51 the polytetrafluoroethylsealed sealed packing 531 of graphite of installing with
In door body 52 the polytetrafluoroethylsealed sealed packing 531 of graphite of installing contact with each other press together can play the inside of chamber operating room 5 and
Outside sealing function.In the present embodiment, graphite PTFE can be resistant to minimum temperature can also keep flexibility for -200 DEG C,
It is hardened without becoming fragile, and then ensure that sealing effectiveness.The silica gel sealing packing 532 is installed in door body 52 and positioned at described
The outside in space is connected, the self limiting temperature heating tape 533 is arranged on the casing 51 and door body 52 at silica gel sealing packing 532.
In the present embodiment, because the material relative resilient and air-tightness of the polytetrafluoroethylsealed sealed packing 531 of the graphite of internal layer are poor, therefore by stone
The polytetrafluoroethylsealed sealed packing 531 of ink is used as first layer sealing structure, can stop most of cold air leakage in chamber operating room 5, make
Temperature on the outside of the connection space of the both sides of casing 51 and door body 52 brings up to more than -80 DEG C, then by being arranged at outside
Silica gel sealing packing 532 seals, and is heated by self limiting temperature heating tape 533, and then the temperature in outside can reach normal silica gel
The optimal seal temperature of sealed packing 532, therefore, the utility model pass through the polytetrafluoroethylsealed sealed packing 531 of graphite and silica gel sealing disk
The double-layer seal design of root 532, it can effectively ensure the sealing property of casing 51 and door body 52 under cryogenic.The high frequency
Impulse electromagnetic valve 3 and temperature inductor 7 are electrically connected at the controller.
Specifically, the casing 51 is enclosed and formed by casing housing 511 and casing inside casing 512, and casing housing 511 and case
Depression forms mounting groove upwards for the junction of internal frame 512, and the polytetrafluoroethylsealed sealed packing 531 of the graphite is installed in mounting groove.
The door body 52 is enclosed and formed by door body housing 521 and door body inside casing 522, and the connection of door body housing 521 and door body inside casing 522
Depression forms mounting groove downwards at place, and the polytetrafluoroethylsealed sealed packing 531 of graphite is installed in mounting groove.When door body 52 is closed, institute
State the polytetrafluoroethylsealed sealed packing 531 of graphite of installing and the polytetrafluoroethylsealed sealed phase mutual connection of packing 531 of graphite of installing in door body 52 in casing 51
Touch to press together and play the sealing effectiveness of first layer.
In the present embodiment, heat-insulation layer 8 is respectively equipped with the casing 51 and door body 52, completely cut off inside tryoff operating room 5
The transmission of temperature and external temperature, for ensureing the internal temperature of tryoff operating room 5, prevent cold air from consuming.
Further, the sealing structure 53 also includes multiple thermal insulation boards 534, the casing housing 511 and casing inside casing
The thermal insulation board 534 is provided between 512 junction, is provided between the junction of the door body housing 521 and door body inside casing 522
The thermal insulation board 534, reduce the heat transfer and door body housing 521 and door body inside casing of casing housing 511 and casing inside casing 512
522 heat transfer.
In the present embodiment, the junction of the casing 51 and door body 52 is set to stepped, flat including first from inside to outside
The platform 10 of platform 9 and second, the polytetrafluoroethylsealed sealed packing 531 of graphite are arranged on the first platform 9, the self limiting temperature heating tape 533
It is arranged at silica gel sealing packing 532 on the second platform 10.
Operation principle of the present utility model：The liquid nitrogen of certain pressure is transferred out from supercharging liquid nitrogen container 1, passes through filter 2, height
Frequency impulse electromagnetic valve 3, after the reducing pressure by regulating flow of capillary 4, liquid nitrogen is in the evaporative cooling of tryoff operating room 5, the lasting output of liquid nitrogen, temperature
Degree just lasting decline, when temperature drops to required low temperature, the temperature that temperature inductor 7 will be detected in chamber operating room 5 becomes
Change, and signal passed into controller control high-frequency impulse magnetic valve 3 and carries out opening/closing motion with a fixed cycle,
The time span that is turned on and off of the high-frequency impulse magnetic valve 3 in a cycle is controlled, enters tryoff to reach control liquid nitrogen
The flow of operating room 5, so as to reach the constant purpose of temperature.And pass through the polytetrafluoroethylsealed sealed packing 531 of graphite and silica gel sealing packing
532 double-layer seal design, it can effectively ensure the sealing property of casing 51 and door body 52 under cryogenic.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned realities
The mode of applying is changed and changed.Therefore, the utility model is not limited to embodiment disclosed and described above, right
Some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model.In addition, to the greatest extent
Some specific terms have been used in pipe this specification, but these terms are merely for convenience of description, not to the utility model
Any restrictions are formed, using same or similar other devices, in scope of protection of the utility model.
Claims (5)
- A kind of 1. novel energy-conserving liquid nitrogen refrigerating system, it is characterised in that：Including supercharging liquid nitrogen container (1), filter (2), high frequency certainly Impulse electromagnetic valve (3), capillary (4), chamber operating room (5) and controller, it is described from supercharging liquid nitrogen container (1), filter (2), high-frequency impulse magnetic valve (3) and capillary (4) are sequentially connected by pipeline (6) and are linked into chamber operating room (5), And temperature inductor (7) is provided with the chamber operating room (5), the chamber operating room (5) includes casing (51), door body (52) it is articulated with sealing structure (53), the door body (52) by hinge (54) on casing (51), the sealing structure (53) The connection gap of the both sides of casing (51) and door body (52) is arranged at, the sealing structure (53) includes the polytetrafluoroethylsealed sealed disk of graphite Root (531), silica gel sealing packing (532) and self limiting temperature heating tape (533), the casing (51) and door body (52) connection gap Inner side be correspondingly provided with the polytetrafluoroethylsealed sealed packing of the graphite (531), the silica gel sealing packing (532) is installed in door body (52) And it is arranged at the casing at silica gel sealing packing (532) place positioned at the outside in the connection space, the self limiting temperature heating tape (533) (51) and in door body (52), the high-frequency impulse magnetic valve (3) and temperature inductor (7) are electrically connected at the controller.
- A kind of 2. novel energy-conserving liquid nitrogen refrigerating system as claimed in claim 1, it is characterised in that：The casing (51) is by casing Housing (511) and casing inside casing (512) are enclosed and formed, and the junction of casing housing (511) and casing inside casing (512) is concave up Fall into and form mounting groove, and the polytetrafluoroethylsealed sealed packing of the graphite (531) is installed in mounting groove, the door body (52) is by door body housing (521) enclose and form with door body inside casing (522), and the downward concave shape in junction of door body housing (521) and door body inside casing (522) Into mounting groove, the polytetrafluoroethylsealed sealed packing of graphite (531) is installed in mounting groove, when door body (52) is closed, the casing (51) the polytetrafluoroethylsealed sealed packing of graphite (531) of installing and the polytetrafluoroethylsealed sealed packing of graphite (531) of installing in door body (52) are mutual in Contact squeeze is together.
- A kind of 3. novel energy-conserving liquid nitrogen refrigerating system as claimed in claim 2, it is characterised in that：The casing (51) and door body (52) heat-insulation layer (8) is respectively equipped with.
- A kind of 4. novel energy-conserving liquid nitrogen refrigerating system as claimed in claim 2, it is characterised in that：The sealing structure (53) is also It is provided with including multiple thermal insulation boards (534), between the casing housing (511) and the junction of casing inside casing (512) described heat-insulated Plate (534), the thermal insulation board (534) is provided between the door body housing (521) and the junction of door body inside casing (522).
- A kind of 5. novel energy-conserving liquid nitrogen refrigerating system as claimed in claim 1, it is characterised in that：The casing (51) and door body (52) junction is set to stepped, polytetrafluoroethylsealed sealed including the first platform (9) and the second platform (10), the graphite from inside to outside Packing (531) is arranged on the first platform (9), and the self limiting temperature heating tape (533) and silica gel sealing packing (532) are arranged at On two platforms (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686724.5U CN206817841U (en) | 2017-06-14 | 2017-06-14 | A kind of novel energy-conserving liquid nitrogen refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720686724.5U CN206817841U (en) | 2017-06-14 | 2017-06-14 | A kind of novel energy-conserving liquid nitrogen refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206817841U true CN206817841U (en) | 2017-12-29 |
Family
ID=60759983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720686724.5U Active CN206817841U (en) | 2017-06-14 | 2017-06-14 | A kind of novel energy-conserving liquid nitrogen refrigerating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206817841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709352A (en) * | 2018-05-29 | 2018-10-26 | 钱浩 | A kind of modified liquid nitrogen refrigerating system |
| CN114893108A (en) * | 2022-05-26 | 2022-08-12 | 中科赛凌(中山)科技有限公司 | A kind of liquid nitrogen test box door body sealing structure |
-
2017
- 2017-06-14 CN CN201720686724.5U patent/CN206817841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709352A (en) * | 2018-05-29 | 2018-10-26 | 钱浩 | A kind of modified liquid nitrogen refrigerating system |
| CN114893108A (en) * | 2022-05-26 | 2022-08-12 | 中科赛凌(中山)科技有限公司 | A kind of liquid nitrogen test box door body sealing structure |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 400052 Chongqing Yubei District Huixing Street Gemstone Branch No. 7 Huafu Chuncheng 3 2-6-8 Patentee after: Polytron Technologies Inc, Chongqing Address before: 400000 Chongqing Yubei District Huixing Street Gem Branch No. 7 Huafu Chuncheng 3 2-6-8 Patentee before: Chongqing Well Testing Instrument Co.,Ltd. |
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| CP03 | Change of name, title or address |