CN220624445U - Cryogenic unit - Google Patents
Cryogenic unit Download PDFInfo
- Publication number
- CN220624445U CN220624445U CN202322379185.9U CN202322379185U CN220624445U CN 220624445 U CN220624445 U CN 220624445U CN 202322379185 U CN202322379185 U CN 202322379185U CN 220624445 U CN220624445 U CN 220624445U
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- Prior art keywords
- evaporator
- cold trap
- compressor
- refrigeration
- electromagnetic valve
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- 238000010257 thawing Methods 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection 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
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Abstract
The utility model relates to the technical field of cryogenic units, and provides a cryogenic unit, which comprises: the automatic switching device comprises a compressor, a cold trap double-refrigerating system, a cold trap double-defrosting system, a self-overlapping system, a first evaporator and a second evaporator, wherein the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-refrigerating system, the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-defrosting system, and the self-overlapping system is arranged in the cold trap double-refrigerating system.
Description
Technical Field
The utility model relates to the technical field of cryogenic units, in particular to a cryogenic unit.
Background
A cold trap is a device that prevents vapor or liquid from entering the measuring instrument from the system, or from the measuring instrument into the system. It provides a very low temperature surface on which molecules can agglomerate and can increase the vacuum level by one to two orders of magnitude.
The application number is as follows: the cryogenic unit structure disclosed in CN00208999.8 mainly comprises a high-temperature unit, a low-temperature unit, a refrigerant circulation system and the like, wherein the high-temperature refrigeration unit is formed by connecting a high-temperature compressor, a water condenser, an expansion valve and an evaporation condenser through refrigerant pipelines, the low-temperature refrigeration unit is formed by connecting a low-temperature compressor, an evaporation condenser, a low-temperature expansion valve and an evaporator through refrigerant pipelines, the refrigerant circulation system is formed by connecting an evaporator, a low-temperature circulation pump and a cooling station through refrigerant medium pipelines, and a water pre-cooler is arranged between the low-temperature compressor and the evaporation condenser of the low-temperature refrigeration unit.
However, when the existing cryogenic unit is used, when the cold trap is stopped, water vapor or other impurity gas in the vacuum system cannot be condensed on the surface of the cold trap, so that the vacuum degree of the system is reduced, the pollution risk of the vacuum pump set is improved, the production efficiency is reduced, and the maintenance cost of the vacuum pump set is increased.
Disclosure of Invention
In order to solve the problems that when the conventional cryogenic unit is used, when a cold trap is stopped, water vapor or other impurity gas in a vacuum system cannot be condensed on the surface of the cold trap, so that the vacuum degree of the system is reduced, the pollution risk of a vacuum pump set is increased, the production efficiency is reduced, and the maintenance cost of the vacuum pump set is increased.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
cryogenic unit, including: the refrigeration system comprises a compressor, a cold trap double-refrigerating system, a cold trap double-defrosting system, a self-overlapping system, a first evaporator and a second evaporator, wherein the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-refrigerating system, and the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-defrosting system, and the self-overlapping system is arranged in the cold trap double-refrigerating system.
Preferably, the cold trap dual refrigeration system comprises: the device comprises a condenser, a dry filter, a first refrigeration electromagnetic valve and a second refrigeration electromagnetic valve, wherein the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the dry filter, the output end of the dry filter is respectively connected with the first evaporator and the second evaporator through a self-overlapping system, and the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve are respectively arranged between the self-overlapping system and the first evaporator and the second evaporator.
Preferably, the cold trap double defrost system comprises: the compressor is connected with the first evaporator and the second evaporator through the first defrosting electromagnetic valve and the second defrosting electromagnetic valve respectively.
Preferably, the condenser adopts an air-cooled fin type condenser, and a high-efficiency anaerobic red copper threaded pipe is selected.
Preferably, an oil separator is arranged in front of the oil cooler of the compressor, the oil separator is of a fully-closed structure, the connecting pipe is subjected to copper plating treatment, and the outer coating is anti-corrosion epoxy split-charging paint.
Preferably, the method further comprises: and the PID controller is used for controlling the refrigeration trap double-refrigeration system, the cold trap double-defrosting system and the automatic overlapping system to enable the first evaporator and the second evaporator to automatically switch working states.
The utility model has the advantages that: the utility model adopts a one-standby use mode through two groups of cold traps consisting of the evaporator, the compressor and the condenser, and realizes the automatic switching function, namely, one cold trap is refrigerated while the other cold trap is defrosted, pollution discharge and standby, so that the normal operation of a vacuum system is not influenced, the pollution risk of a vacuum pump set is reduced, the production efficiency is improved, the maintenance cost of the vacuum pump set is reduced, and the cold trap has the defrosting and refrigerating functions by arranging the cold trap double refrigerating system and the cold trap double defrosting system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic structural view of the present utility model.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Embodiment one, described with reference to fig. 1:
cryogenic unit, including: the refrigeration system comprises a compressor, a cold trap double-refrigerating system, a cold trap double-defrosting system, a self-overlapping system, a first evaporator and a second evaporator, wherein the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-refrigerating system, and the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-defrosting system, and the self-overlapping system is arranged in the cold trap double-refrigerating system.
The automatic cascade system is adopted, the single machine automatic cascade refrigeration technology is utilized, the temperature is selectable from-50 ℃ to-150 ℃ according to the requirement, and the oil blockage cannot be caused.
The single-machine automatic cascade refrigeration technology has 15-30% higher energy efficiency than the traditional double-stage cascade or three-stage cascade technology, because the number of moving parts is small, the control is easy, the cost is reduced, the failure rate is greatly reduced, and the environment-friendly refrigerant is adopted in the compressor, thereby avoiding the pollution to the environment.
The cold trap dual refrigeration system comprises: the device comprises a condenser, a dry filter, a first refrigeration electromagnetic valve and a second refrigeration electromagnetic valve, wherein the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the dry filter, the output end of the dry filter is respectively connected with the first evaporator and the second evaporator through a self-overlapping system, and the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve are respectively arranged between the self-overlapping system and the first evaporator and the second evaporator.
The drying filter adopts a Danfoss DML series drying filter, and a 100% molecular sieve core body is the most perfect core body for a system which operates at a high condensation temperature and needs high drying capacity, so that the safe and stable operation of the system can be ensured.
The refrigeration solenoid valve adopts an Italian original inlet Kashituo solenoid valve, a nut with an O-shaped sealing ring ensures water resistance, and meanwhile, the connection of the simplified coil is carefully designed, thereby conforming to the CE161-1 standard and being capable of working continuously under the limit condition.
The cold trap dual defrost system includes: the compressor is connected with the first evaporator and the second evaporator through the first defrosting electromagnetic valve and the second defrosting electromagnetic valve respectively.
The first defrosting electromagnetic valve and the second defrosting electromagnetic valve are all defrosting electromagnetic valves, and the defrosting electromagnetic valves are of the prior art and are not described in detail herein.
The condenser adopts an air-cooled fin type condenser, so that the heat exchange system is high, the heat exchange coefficient is large, and the volume of the heat exchanger is reduced; the intermediate expansion connection is a special technology, and is convenient to maintain; the 410 high-efficiency anaerobic red copper threaded pipe is selected, and is welded under the protection of nitrogen, so that no oxide scale exists in the pipeline, and the filth blockage of a refrigerating system is avoided.
An oil separator is arranged in front of an oil cooler of the compressor, the oil separator adopts an EMERSON oil separator, the oil separator is of a fully-closed structure, a connecting pipe is subjected to copper plating treatment, and an outer coating is anti-corrosion epoxy split-charging paint.
Further comprises: and the PID controller is used for controlling the refrigeration trap double-refrigeration system, the cold trap double-defrosting system and the automatic overlapping system to enable the first evaporator and the second evaporator to automatically switch working states.
The control system adopts a PID controller, has high temperature control precision, full digital Chinese display, and is convenient, safe and reliable to operate, and the unmanned full-automatic operation is realized.
The control system has a plurality of protection measures such as over-high exhaust temperature shutdown, over-high exhaust pressure shutdown, current overload shutdown, overheat protection and the like.
The device is applied to the fields of capacitors, battery liquid injection, battery core drying production systems, scientific research units, aerospace, biopharmaceuticals, vacuum coating, electronic chemical industry and the like, and can also be used as a pre-cooling tank and a low-temperature tank.
The working principle of the utility model is as follows: the utility model adopts the compressor, the cold trap double refrigerating system, the cold trap double defrosting system, the self-overlapping system, the first evaporator and the second evaporator to be matched, and can effectively condense water vapor or other impurity gases in the vacuum system on the surface of the cold trap, thereby improving the vacuum degree of the system, protecting the vacuum pump set from being polluted, improving the production efficiency and saving the maintenance cost of the vacuum pump set.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model, but any minor modifications, equivalents, and improvements made to the above embodiments according to the technical principles of the present utility model should be included in the scope of the technical solutions of the present utility model.
Claims (6)
1. Cryogenic unit, its characterized in that includes: the refrigeration system comprises a compressor, a cold trap double-refrigerating system, a cold trap double-defrosting system, a self-overlapping system, a first evaporator and a second evaporator, wherein the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-refrigerating system, and the compressor is respectively connected with the first evaporator and the second evaporator through the cold trap double-defrosting system, and the self-overlapping system is arranged in the cold trap double-refrigerating system.
2. The cryogenic unit of claim 1, wherein the cold trap dual refrigeration system comprises: the device comprises a condenser, a dry filter, a first refrigeration electromagnetic valve and a second refrigeration electromagnetic valve, wherein the output end of the compressor is connected with the input end of the condenser, the output end of the condenser is connected with the input end of the dry filter, the output end of the dry filter is respectively connected with the first evaporator and the second evaporator through a self-overlapping system, and the first refrigeration electromagnetic valve and the second refrigeration electromagnetic valve are respectively arranged between the self-overlapping system and the first evaporator and the second evaporator.
3. The cryogenic unit of claim 1, wherein the cold trap dual defrost system comprises: the compressor is connected with the first evaporator and the second evaporator through the first defrosting electromagnetic valve and the second defrosting electromagnetic valve respectively.
4. The cryogenic unit of claim 2, wherein the condenser is an air-cooled fin condenser, and 410 high-efficiency anaerobic red copper threaded pipe is selected.
5. The deep cooling unit according to claim 2, wherein an oil separator is arranged in front of the oil cooler of the compressor, the oil separator is of a fully-closed structure, the connecting pipe is subjected to copper plating treatment, and the outer coating is anti-corrosion epoxy split-charging paint.
6. The cryogenic unit of claim 1, further comprising: and the PID controller is used for controlling the refrigeration trap double-refrigeration system, the cold trap double-defrosting system and the automatic overlapping system to enable the first evaporator and the second evaporator to automatically switch working states.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322379185.9U CN220624445U (en) | 2023-09-04 | 2023-09-04 | Cryogenic unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322379185.9U CN220624445U (en) | 2023-09-04 | 2023-09-04 | Cryogenic unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220624445U true CN220624445U (en) | 2024-03-19 |
Family
ID=90217226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322379185.9U Active CN220624445U (en) | 2023-09-04 | 2023-09-04 | Cryogenic unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220624445U (en) |
-
2023
- 2023-09-04 CN CN202322379185.9U patent/CN220624445U/en active Active
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