CN112325567A - Liquid nitrogen preparation system - Google Patents
Liquid nitrogen preparation system Download PDFInfo
- Publication number
- CN112325567A CN112325567A CN202011224394.0A CN202011224394A CN112325567A CN 112325567 A CN112325567 A CN 112325567A CN 202011224394 A CN202011224394 A CN 202011224394A CN 112325567 A CN112325567 A CN 112325567A
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- Prior art keywords
- assembly
- matching
- liquid nitrogen
- nitrogen
- liquefaction
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04109—Arrangements of compressors and /or their drivers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04642—Recovering noble gases from air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
Abstract
The invention discloses a liquid nitrogen preparation system which comprises a preparation support frame and a nitrogen separation structure, wherein a liquefaction structure is arranged inside the preparation support frame, a compressor is arranged below the liquefaction structure, the outer side of the compressor is connected with a conveying pipe, one end of the conveying pipe is connected with a condenser, the upper end of the liquefaction structure is connected with an air inlet pipe, the input end of the air inlet pipe is connected with a preparation cleaning structure, the nitrogen separation structure is arranged inside the air inlet pipe, and the right lower end of the liquefaction structure is connected with a matching output structure. According to the invention, the nitrogen separation structure can be used for conveniently separating nitrogen in the air, and the nitrogen separation membrane can be replaced by sliding and drawing, so that the convenience of maintenance and overhaul of the device can be improved; meanwhile, the joint of the matching sliding block and the matching groove rail keeps a high sealing effect, so that gas leakage can be avoided, and the practicability of the device is improved.
Description
Technical Field
The invention relates to the technical field of liquid nitrogen preparation, in particular to a liquid nitrogen preparation system.
Background
Liquid nitrogen is liquid nitrogen. The liquid nitrogen is inert, colorless, odorless, non-corrosive, non-combustible and extremely low temperature liquid. The frostbite is caused by a large amount of heat absorption contact during vaporization. Nitrogen has a boiling point of-196 c and at normal atmospheric pressure temperatures below this will form liquid nitrogen, which if pressurized can be obtained at higher temperatures. If the human body is contacted without protective measures, the skin is at risk of severe frostbite. If the nitrogen generated by vaporization under normal pressure is excessive, the oxygen partial pressure in the air can be reduced, and oxygen deficiency asphyxiation is caused. In industry, liquid nitrogen is obtained by air fractionation. Air is first purified and then liquefied in pressurized and cooled environment, and the components in the air are separated according to their different boiling points. Human skin is free of problems at the moment of direct contact with liquid nitrogen, and is frostbitten and irreversible in more than 2 seconds.
The potential safety hazard exists when using the output in current liquid nitrogen preparation system, and the liquid nitrogen of drippage can cause the injury to the user to still have clean inconvenient problem during the system nitrogen, still have the inconvenient problem of nitrogen gas separation maintenance simultaneously, the user demand of satisfying people that can not be fine carries out technical innovation on current liquid nitrogen preparation system basis to above-mentioned condition.
Disclosure of Invention
The invention aims to provide a liquid nitrogen preparation system, which aims to solve the problems that the existing liquid nitrogen preparation system in the background art has potential safety hazard during use and output, leaked liquid nitrogen can hurt users, and the cleaning is inconvenient during nitrogen preparation, and the separation and maintenance of nitrogen are inconvenient, so that the use requirements of people cannot be well met.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a liquid nitrogen preparation system, is including preparing braced frame and nitrogen gas isolating construction, the internally mounted of preparation braced frame has the liquefaction structure, and the below of liquefaction structure is provided with the compressor, the outside of compressor is connected with the conveyer pipe, and the one end of conveyer pipe is connected with the condenser, the upper end of liquefaction structure is connected with the intake pipe, and the input of intake pipe is connected with the clean structure of preparation, the nitrogen gas isolating construction sets up in the inside of intake pipe, the right lower extreme of liquefaction structure is connected with the matching output structure.
Preferably, the nitrogen separation structure comprises a nitrogen separation membrane, an assembly frame, a matching sliding block and a matching groove rail, the assembly frame is arranged on the outer side of the nitrogen separation membrane, the matching sliding block is connected to the outer side of the assembly frame, and the matching groove rail is arranged on the outer side of the matching sliding block.
Preferably, the assembly frame forms a sliding structure through the matching sliding block, the matching groove rail and the air inlet pipe, and the shape structures of the connecting part of the matching sliding block and the matching groove rail are matched with each other.
Preferably, the matching output structure comprises an output pipe, a fixing bolt, an assembly groove and a low-temperature assembly ring, the fixing bolt penetrates through the output pipe, the assembly groove is formed in the front end of the output pipe, and the low-temperature assembly ring is arranged in the assembly groove.
Preferably, the assembly groove and the low-temperature assembly ring are matched with each other, and the output pipe and the liquefaction structure are communicated with each other.
Preferably, the cleaning structure comprises a cleaning filter screen, an assembling block and a matching groove, the assembling block is arranged on the outer side of the cleaning filter screen, and the matching groove is arranged on the outer side of the assembling block.
Preferably, clean filter screen passes through the mutual block between assembly piece and the matching groove and the intake pipe, and the size of clean filter screen is the same with the internal diameter of intake pipe.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the nitrogen separation structure can be used for conveniently separating nitrogen in the air, and the nitrogen separation membrane can be replaced by sliding and drawing, so that the convenience of maintenance and overhaul of the device can be improved; meanwhile, the joint of the matching sliding block and the matching groove rail keeps a higher sealing effect, so that gas leakage can be avoided, and the practicability of the device is improved;
according to the invention, the output end can be conveniently sealed and protected by the arranged matching output structure, so that the tightness of a connecting part when liquid nitrogen is output can be ensured, the problem of liquid nitrogen leakage is avoided, and the problem of skin injury caused by low temperature freezing due to liquid nitrogen leakage can be avoided by the arrangement of the low-temperature assembly ring;
according to the invention, the air prepared by adsorption can be conveniently filtered through the arranged preparation cleaning structure, so that more impurities can be avoided during nitrogen preparation, the cleanness of the prepared nitrogen is ensured, meanwhile, the filtered impurities can be conveniently cleaned through the clamping of the assembling block and the matching groove, and the influence on the filtering effect caused by the mass accumulation of the impurities is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a side view of a matching output structure according to the present invention;
FIG. 3 is a schematic top view of a cleaning structure according to the present invention;
FIG. 4 is a schematic diagram of a side view of a nitrogen separation structure according to the present invention.
In the figure: 1. preparing a support frame; 2. a liquefied structure; 3. a compressor; 4. a delivery pipe; 5. a condenser; 6. an air inlet pipe; 7. a nitrogen separation structure; 701. a nitrogen separation membrane; 702. assembling the frame; 703. matching the sliding block; 704. matching the groove tracks; 8. matching the output structure; 801. an output pipe; 802. fixing the bolt; 803. assembling a groove; 804. a low temperature assembly ring; 9. preparing a cleaning structure; 901. cleaning the filter screen; 902. assembling the block; 903. a matching groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a liquid nitrogen preparation system, including preparation braced frame 1 and nitrogen gas separation structure 7, the internally mounted of preparation braced frame 1 has liquefaction structure 2, and the below of liquefaction structure 2 is provided with compressor 3, the outside of compressor 3 is connected with conveyer pipe 4, and the one end of conveyer pipe 4 is connected with condenser 5, the upper end of liquefaction structure 2 is connected with intake pipe 6, and the input of intake pipe 6 is connected with the clean structure 9 of preparation, nitrogen gas separation structure 7 sets up in the inside of intake pipe 6, the right lower extreme of liquefaction structure 2 is connected with and matches output structure 8.
In the invention: the nitrogen separation structure 7 comprises a nitrogen separation membrane 701, an assembly frame 702, a matching sliding block 703 and a matching groove rail 704, the assembly frame 702 is arranged on the outer side of the nitrogen separation membrane 701, the matching sliding block 703 is connected to the outer side of the assembly frame 702, the matching groove rail 704 is arranged on the outer side of the matching sliding block 703, the assembly frame 702 forms a sliding structure with the air inlet pipe 6 through the matching sliding block 703 and the matching groove rail 704, the appearance structures of the connecting part of the matching sliding block 703 and the matching groove rail 704 are matched with each other, the nitrogen separation structure 7 can be used for conveniently separating nitrogen in the air, and meanwhile, the nitrogen separation membrane 701 can be replaced through sliding and drawing, so that the convenience of maintenance and overhaul of the device can be improved; meanwhile, the joint of the matching sliding block 703 and the matching groove rail 704 keeps high sealing effect, so that gas leakage can be avoided, and the practicability of the device is improved.
In the invention: match output structure 8 and include output tube 801, fixing bolt 802, assembly groove 803 and low temperature assembly ring 804, and the inside of output tube 801 runs through there is fixing bolt 802, assembly groove 803 has been seted up to output tube 801's front end, and the internally mounted of assembly groove 803 has low temperature assembly ring 804, mutually support between assembly groove 803 and the low temperature assembly ring 804, and communicate each other between output tube 801 and the liquefaction structure 2, match output structure 8 through setting up can conveniently seal the protection processing to the output, so can guarantee the compactness of junction when liquid nitrogen exports, avoid the problem that the liquid nitrogen was revealed, can avoid the problem that the liquid nitrogen spills and lead to low temperature frostbite skin through setting up of low temperature assembly ring 804.
In the invention: preparation clean structure 9 is including clean filter screen 901, assembly block 902 and matching groove 903, and the outside of clean filter screen 901 is provided with assembly block 902, and the outside of assembly block 902 is provided with matching groove 903, clean filter screen 901 passes through assembly block 902 and matches mutual block between groove 903 and the intake pipe 6, and the size of clean filter screen 901 is the same with the internal diameter of intake pipe 6, can conveniently carry out filtration treatment to the air that adsorbs the preparation through the clean structure 9 of preparation that sets up, more impurity appears when so can avoiding preparing nitrogen gas, guarantee the cleanness of preparation nitrogen gas, the block through assembly block 902 and matching groove 903 can conveniently clean the impurity after filtering simultaneously, avoid a large amount of accumulations of impurity to influence the filter effect.
The working principle is as follows: firstly, the preparation supporting frame 1 can support and bear the whole device, external air can enter the liquefaction structure 2 through the air inlet pipe 6, the external air needs to be filtered by the cleaning filter screen 901 after entering, so that the cleanness of the air is ensured, the cleaned air can be separated by the nitrogen separation membrane 701, nitrogen at the separation position is separated, the nitrogen enters the liquefaction structure 2, the liquefaction structure 2 is communicated with the compressor 3 and the condenser 5 through the conveying pipe 4, so that the cooling liquid can be ensured to fully cool the nitrogen in the liquefaction structure 2, so that the nitrogen is fully liquefied, meanwhile, the arranged output pipe 801 is communicated with the liquefaction structure 2, so that the liquid nitrogen can be discharged from the output pipe 801, the output pipe 801 is mutually connected with an external liquid nitrogen storage device through the fixing bolt 802, and the sealing performance at the connection position can be ensured through the low-temperature assembling ring 804 arranged in the assembling groove 803, avoid appearing the danger that the liquid nitrogen was revealed, the clean filter screen 901 that sets up can be taken out from matching the groove 903 through assembly block 902, so can conveniently assemble the change processing to clean filter screen 901, improve the convenience that the device used, can follow through matching slider 703 and take out in matching the grooved rail 704 through assembly frame 702, so can conveniently maintain the processing to nitrogen gas separation membrane 701.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A liquid nitrogen preparation system, includes preparation braced frame (1) and nitrogen gas separation structure (7), its characterized in that: the internally mounted of preparation braced frame (1) has liquefaction structure (2), and the below of liquefaction structure (2) is provided with compressor (3), the outside of compressor (3) is connected with conveyer pipe (4), and the one end of conveyer pipe (4) is connected with condenser (5), the upper end of liquefaction structure (2) is connected with intake pipe (6), and the input of intake pipe (6) is connected with and prepares clean structure (9), nitrogen gas separation structure (7) set up in the inside of intake pipe (6), the right lower extreme of liquefaction structure (2) is connected with and matches output structure (8).
2. The liquid nitrogen production system according to claim 1, wherein: the nitrogen separation structure (7) comprises a nitrogen separation membrane (701), an assembly frame (702), a matching sliding block (703) and a matching groove rail (704), the assembly frame (702) is arranged on the outer side of the nitrogen separation membrane (701), the matching sliding block (703) is connected to the outer side of the assembly frame (702), and the matching groove rail (704) is arranged on the outer side of the matching sliding block (703).
3. A liquid nitrogen production system as set forth in claim 2, wherein: the assembly frame (702) forms a sliding structure with the air inlet pipe (6) through the matching sliding block (703) and the matching groove rail (704), and the shape structures of the connecting part of the matching sliding block (703) and the matching groove rail (704) are matched with each other.
4. The liquid nitrogen production system according to claim 1, wherein: match output structure (8) including output tube (801), fixing bolt (802), assembly groove (803) and low temperature assembly ring (804), and the inside of output tube (801) is run through and is had fixing bolt (802), assembly groove (803) have been seted up to the front end of output tube (801), and the internally mounted of assembly groove (803) has low temperature assembly ring (804).
5. The liquid nitrogen production system according to claim 4, wherein: the assembly groove (803) is matched with the low-temperature assembly ring (804), and the output pipe (801) is communicated with the liquefaction structure (2).
6. The liquid nitrogen production system according to claim 1, wherein: the preparation cleaning structure (9) comprises a cleaning filter screen (901), an assembly block (902) and a matching groove (903), wherein the assembly block (902) is arranged on the outer side of the cleaning filter screen (901), and the matching groove (903) is arranged on the outer side of the assembly block (902).
7. The liquid nitrogen production system according to claim 6, wherein: the cleaning filter screen (901) is clamped with the air inlet pipe (6) through the assembling block (902) and the matching groove (903), and the size of the cleaning filter screen (901) is the same as the inner diameter of the air inlet pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011224394.0A CN112325567A (en) | 2020-11-05 | 2020-11-05 | Liquid nitrogen preparation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011224394.0A CN112325567A (en) | 2020-11-05 | 2020-11-05 | Liquid nitrogen preparation system |
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| CN112325567A true CN112325567A (en) | 2021-02-05 |
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| CN202011224394.0A Pending CN112325567A (en) | 2020-11-05 | 2020-11-05 | Liquid nitrogen preparation system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117752A (en) * | 1992-10-01 | 1994-04-28 | Nippon Sanso Kk | Method and device for liquefaction and separation of air |
| CN103062990A (en) * | 2013-01-24 | 2013-04-24 | 成都深冷液化设备股份有限公司 | Novel liquid air separation device and process |
| CN110986483A (en) * | 2019-12-18 | 2020-04-10 | 陈翠平 | Mechanical air separation and purification equipment |
| CN210751935U (en) * | 2019-08-07 | 2020-06-16 | 镇江市恒利低温技术有限公司 | Liquid nitrogen extraction element convenient to get material |
| CN211346051U (en) * | 2019-11-04 | 2020-08-25 | 深圳市开迩文科技有限公司 | Nitrogen separation liquefaction device |
-
2020
- 2020-11-05 CN CN202011224394.0A patent/CN112325567A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117752A (en) * | 1992-10-01 | 1994-04-28 | Nippon Sanso Kk | Method and device for liquefaction and separation of air |
| CN103062990A (en) * | 2013-01-24 | 2013-04-24 | 成都深冷液化设备股份有限公司 | Novel liquid air separation device and process |
| CN210751935U (en) * | 2019-08-07 | 2020-06-16 | 镇江市恒利低温技术有限公司 | Liquid nitrogen extraction element convenient to get material |
| CN211346051U (en) * | 2019-11-04 | 2020-08-25 | 深圳市开迩文科技有限公司 | Nitrogen separation liquefaction device |
| CN110986483A (en) * | 2019-12-18 | 2020-04-10 | 陈翠平 | Mechanical air separation and purification equipment |
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Application publication date: 20210205 |