CN219868775U - Air separation device with nitrogen liquefier - Google Patents
Air separation device with nitrogen liquefier Download PDFInfo
- Publication number
- CN219868775U CN219868775U CN202321164926.5U CN202321164926U CN219868775U CN 219868775 U CN219868775 U CN 219868775U CN 202321164926 U CN202321164926 U CN 202321164926U CN 219868775 U CN219868775 U CN 219868775U
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- Prior art keywords
- nitrogen
- liquid
- air separation
- liquefier
- storage tank
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 132
- 238000000926 separation method Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 129
- 238000003860 storage Methods 0.000 claims abstract description 72
- 239000011229 interlayer Substances 0.000 claims abstract description 17
- 229920000742 Cotton Polymers 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 11
- 238000005253 cladding Methods 0.000 abstract description 8
- 238000005086 pumping Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses an air separation device with a nitrogen liquefier, and belongs to the field of air separation devices of nitrogen liquefiers. An air separation plant having a nitrogen liquefier, comprising: the device comprises a box body, wherein an access door is rotatably connected to the side edge of the box body, a control panel is arranged on the access door, a nitrogen liquefier body is arranged in the box body, and a storage box is connected to the nitrogen liquefier body through a liquid suction pipe; according to the liquid nitrogen liquid level control device, the liquid pump, the liquid level sensing assembly, the electromagnetic valve and the pressure gauge are arranged to be matched with each other, so that liquid nitrogen is pumped and liquid level control is realized, separation of liquid nitrogen and nitrogen is realized, and convenience is brought to operators for using the liquid nitrogen; the vacuum pump is started to perform vacuumizing operation on the interlayer by using the pump pipe, double heat preservation of heat preservation cotton in the outer cladding plate and the inner lining plate is utilized, and the heat loss of liquid nitrogen in the storage tank is further reduced by combining the vacuum environment of the interlayer, so that the stability of the liquid nitrogen in the storage tank is ensured.
Description
Technical Field
The utility model relates to the field of air separation devices of nitrogen liquefiers, in particular to an air separation device with a nitrogen liquefier.
Background
The nitrogen liquefier is a scientific instrument used in the fields of biology and pharmacy, the nitrogen liquefier liquefies nitrogen generated by the nitrogen generator by a cryogenic mixed working medium throttling refrigerator to generate liquid nitrogen, the liquid nitrogen can be continuously prepared for 24 hours in scientific research institutions or pharmaceutical enterprises with larger dosage, the trouble of recharging the liquid nitrogen is omitted, the use cost is reduced, the use efficiency is improved, the liquid nitrogen is an inert, colorless, odorless, noncorrosive and nonflammable gas with extremely low temperature, the nitrogen forms most of the atmosphere, wherein the volume ratio is 78.03 percent, the weight ratio is 75.5 percent, and the liquid nitrogen can be used for food refrigeration, metallurgical industry, washing and protecting gas, gas lasers, air content equipment, electric power transmission, waste treatment and the like.
Through retrieving, the patent number is CN206255841U, and the name is liquid nitrogen industrial production equipment, and this patent is through installing each part of liquid nitrogen production in a box in a concentrated way, and easy operation is nimble, and air purifier is used for filtering moisture and solid particulate matter in the air, then carries the separation nitrogen gas in the adsorption tower with the air after handling, and the nitrogen gas that separates carries out compression treatment through the compressor to in passing through steering valve and check valve to the high pressure storage tank.
However, in the above cited patent, there is a case that part of nitrogen is not completely liquefied in the process of compressing and liquefying nitrogen, and the separation of vaporized nitrogen from liquid nitrogen in the process of transporting or transferring liquid nitrogen is inconvenient, so that a certain loss may be caused to a subsequent user of liquid nitrogen, and thus, improvement of the defects and drawbacks of the prior art is needed.
Disclosure of Invention
The utility model aims to solve the problems that in the prior art, partial nitrogen is not completely liquefied in the compression liquefaction process of nitrogen, and the vaporized nitrogen is inconvenient to separate from liquid nitrogen in the transportation or transmission process of liquid nitrogen, so that certain loss is possibly caused to a subsequent user of liquid nitrogen, and provides an air separation device with a nitrogen liquefier.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an air separation plant having a nitrogen liquefier, comprising: the liquid level measuring device comprises a box body, wherein an access door is rotationally connected to the side edge of the box body, a control panel is arranged on the access door, a nitrogen liquefier body is arranged in the box body, a storage box is connected to the nitrogen liquefier body through a liquid suction pipe, a liquid pump is arranged on the liquid suction pipe, a liquid nitrogen lower discharge pipe is arranged at the bottom of the storage box and extends to the outside of the box body, and a liquid level sensing assembly is arranged at the top of the inner side of the storage box and used for measuring the liquid level height of liquid nitrogen in the storage box; the storage tank is provided with a pressure gauge, the upper side of the storage tank is connected with a filtering tank through an exhaust pipe, the exhaust pipe is provided with an electromagnetic valve, the top of the filtering tank is connected with a three-way valve through an exhaust pipe, the three-way valve is connected with an outer exhaust pipe and a branch pipe, the outer exhaust pipe extends to the outer side of the tank body, and the branch pipe is connected with a nitrogen storage tank in the direction away from the three-way valve.
When the device is used, the device is electrically connected with an external power supply, then a corresponding program and the air pressure upper limit value of a pressure gauge are set through a control panel, then a liquid pump is started through the control panel, liquid nitrogen in a nitrogen liquefier body is pumped into a storage tank through a liquid pumping pipe, when the liquid level of the liquid nitrogen in the storage tank reaches a certain height, the resistance of a sliding rheostat in a liquid level sensing assembly is triggered to change, so that the current passing through the liquid pump is changed, when the resistance in the sliding rheostat reaches the maximum value, the current state of the liquid pump is disconnected, the liquid nitrogen continues to be pumped into the storage tank, in the continuous change process of the liquid level in the storage tank, the liquid nitrogen is accumulated at the bottom in the storage tank, most of nitrogen floats on the upper surface of the liquid nitrogen, the pressure value of the pressure gauge is also continuously increased, when the air pressure value of the pressure gauge reaches a set threshold value, the electromagnetic valve on the air pumping pipe is automatically opened, the liquid nitrogen in the storage tank flows into a filter tank through the air pumping pipe, moisture and impurities in the nitrogen are absorbed by utilizing calcium chloride particles in the filter tank, the three-way valve is opened, the filtered nitrogen in the filter tank can be controlled to flow out through the air discharging pipe or a branch pipe, the nitrogen can be discharged outside the liquid nitrogen through the control valve, and the nitrogen can be discharged outside the storage tank through the control valve to the bottom of the storage tank.
Further, an outer cladding plate, an interlayer and an inner lining plate are sequentially arranged on the storage box from outside to inside.
Further, heat preservation cotton is filled in the outer cladding plate and the inner lining plate.
Further, a vacuum pump is arranged on the outer side of the storage box, and the vacuum pump is connected with the interlayer through a pump pipe.
The vacuum pump is started through the control panel, the pump pipe is used for vacuumizing operation in the interlayer on the storage box, double heat preservation of heat preservation cotton in the outer cladding plate and the inner lining plate is used, and the vacuum environment of the interlayer is combined, so that heat loss of liquid nitrogen in the storage box is further reduced, and the stability of the liquid nitrogen in the storage box is ensured.
Further, a heating resistance wire is arranged on the upper side of the connection part of the exhaust pipe and the storage box.
The heating resistance wire is electrified through the control panel, so that the connection part of the exhaust tube and the storage box is heated, and the frosting in the exhaust tube is effectively prevented when low-temperature nitrogen in the storage box is discharged to the filter tank through the exhaust tube upwards, thereby facilitating the rapid passing of the nitrogen in the exhaust tube after heating.
Further, be provided with the cavity on the liquid level response subassembly, cavity inboard top is provided with the slide rheostat, cavity bottom sliding connection has the slide bar, slide bar upper portion is connected with the slider, the slider is located slide rheostat under, the slide bar bottom is connected with the floater, the floater is located the outside of cavity.
Further, the control panel is respectively and electrically connected with the liquid pump, the electromagnetic valve, the heating resistance wire, the three-way valve, the vacuum pump, the pressure gauge and the liquid level sensing assembly.
Compared with the prior art, the utility model provides the air separation device with the nitrogen liquefier, which has the following beneficial effects:
1. through setting up the cooperation of the liquid pump and slide rheostat in the liquid level induction assembly, realized the automatic control to the liquid level of liquid nitrogen in the bin, when liquid level and atmospheric pressure change in the bin reach the upper limit value that the pressure gauge locates to presume, the electromagnetic valve opens automatically, the nitrogen gas of liquid nitrogen upper surface in the bin is discharged into the filtering tank by the exhaust tube and filtered, when the electromagnetic valve closes, can open the valve on the calandria under liquid nitrogen and discharge some liquid nitrogen and be used for food refrigeration, metallurgical industry, etc., repeat the above-mentioned step, can continue to realize the separation of liquid nitrogen and nitrogen gas;
2. the vacuum pump is started to perform vacuumizing operation on the interlayer by using the pump pipe, double heat preservation of heat preservation cotton in the outer cladding plate and the inner lining plate is utilized, and the heat loss of liquid nitrogen in the storage tank is further reduced by combining the vacuum environment of the interlayer, so that the stability of the liquid nitrogen in the storage tank is ensured.
Drawings
FIG. 1 is a schematic three-dimensional structure of an air separation plant with a nitrogen liquefier according to the present utility model;
FIG. 2 is a schematic diagram showing the internal structure of an air separation plant with a nitrogen liquefier according to the present utility model;
FIG. 3 is a schematic top view of a storage tank of an air separation unit with a nitrogen liquefier according to the present utility model;
FIG. 4 is a schematic cross-sectional view of a storage tank of an air separation unit with a nitrogen liquefier according to the present utility model;
FIG. 5 is a schematic view of the portion A of FIG. 4 illustrating an air separation unit with a nitrogen liquefier according to the present utility model;
fig. 6 is a schematic diagram of a portion B of the air separation unit with a nitrogen liquefier in fig. 4 according to the present utility model.
In the figure: 1. a case; 101. an access door; 102. a control panel; 2. a nitrogen liquefier body; 3. a liquid suction pipe; 31. a liquid pump; 4. a storage tank; 41. an outer cover plate; 42. an interlayer; 43. an inner liner; 5. an exhaust pipe; 51. an electromagnetic valve; 52. heating the resistance wire; 6. a filter tank; 7. an exhaust pipe; 8. a three-way valve; 81. an outer tube; 82. a branch pipe; 9. a nitrogen storage tank; 10. a vacuum pump; 11. a pump tube; 12. a liquid nitrogen discharging pipe; 13. a pressure gauge; 14. a liquid level sensing assembly; 141. a cavity; 142. a slide rheostat; 143. a slide bar; 144. a floating ball; 145. a sliding block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify 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.
Examples:
referring to fig. 1-6, an air separation plant with a nitrogen liquefier, comprising: the liquid nitrogen storage box comprises a box body 1, an access door 101 is rotatably connected to the side edge of the box body 1, a control panel 102 is arranged on the access door 101, a nitrogen liquefier body 2 is arranged in the box body 1, a storage box 4 is connected to the nitrogen liquefier body 2 through a liquid suction pipe 3, a liquid pump 31 is arranged on the liquid suction pipe 3, a liquid nitrogen lower drain pipe 12 is arranged at the bottom of the storage box 4 and extends to the outside of the box body 1, and a liquid level sensing assembly 14 is arranged at the top of the inner side of the storage box 4 and used for measuring the liquid nitrogen level height in the storage box 4; be provided with manometer 13 on bin 4, bin 4 upside is connected with filtration jar 6 through exhaust tube 5, is provided with solenoid valve 51 on the exhaust tube 5, and filtration jar 6 top is connected with three-way valve 8 through blast pipe 7, connects on the three-way valve 8 to be provided with outer calandria 81, branch pipe 82, and outer calandria 81 extends to the box 1 outside, and branch pipe 82 is kept away from three-way valve 8 direction and is connected with nitrogen gas storage jar 9.
Working principle: when the nitrogen liquefier is used, the device is electrically connected with an external power supply, a corresponding program and the air pressure upper limit value of the pressure gauge 13 are set through the control panel 102, then the liquid pump 31 is started through the control panel 102, liquid nitrogen in the nitrogen liquefier body 2 is pumped into the storage tank 4 through the liquid pumping pipe 3, when the liquid level of the liquid nitrogen in the storage tank 4 reaches a certain height, the resistance of the sliding rheostat 142 in the liquid level sensing assembly 14 is triggered to change, so that the current passing through the liquid pump 31 is changed, the current state of the liquid pump 31 is disconnected until the resistance in the sliding rheostat 142 reaches the maximum value, the continuous pumping of the liquid nitrogen into the storage tank 4 is automatically stopped, in the continuous changing process of the liquid level in the storage tank 4, most of the liquid nitrogen is stored at the inner bottom of the storage tank 4, the pressure value of the liquid nitrogen floats on the upper surface of the liquid nitrogen, the electromagnetic valve 51 at the pressure gauge 13 is also continuously increased, when the air pressure value of the pressure gauge 13 reaches the set threshold value, the electromagnetic valve 51 on the storage tank 5 is automatically started, the liquid nitrogen in the storage tank 4 flows into the filter tank 6 through the air pumping pipe 5, the calcium chloride particles in the filter tank 6 until the liquid nitrogen reaches the maximum value, the resistance in the filter tank is disconnected, the liquid nitrogen is discharged from the filter tank 6 through the filter tank 8, the nitrogen inlet pipe 82 is controlled to be discharged through the three-way valve 8, and the filter valve 8 is controlled to be opened, and the nitrogen can be discharged outside through the filter pipe 82, and the filter valve 8, and the filter tank is controlled to be discharged to the filter tank 82, and the nitrogen tank is discharged to the outside through the filter tank 9, and the filter tank 9.
The storage box 4 is provided with an outer cover plate 41, an interlayer 42 and an inner lining plate 43 in sequence from outside to inside.
The outer cladding plate 41 and the inner lining plate 43 are filled with heat-insulating cotton; by filling the heat-insulating cotton material in the outer cover plate 41 and the interlayer 42, the whole heat-insulating performance of the storage tank 4 is enhanced, and the temperature rise and change of liquid nitrogen in the storage tank 4 due to the influence of the ambient temperature can be prevented.
The outer side of the storage box 4 is provided with a vacuum pump 10, and the vacuum pump 10 is connected with an interlayer 42 through a pump pipe 11; the vacuum pump 10 is started at the position of the control panel 102 to perform vacuumizing operation on the upper interlayer 42 of the storage tank 4 by using the pump pipe 11, double heat preservation of heat preservation cotton in the outer cladding plate 41 and the inner lining plate 43 is utilized, and heat loss of liquid nitrogen in the storage tank 4 is further reduced by combining the vacuum environment of the interlayer 42, so that stability of the liquid nitrogen in the storage tank 4 is ensured.
A heating resistance wire 52 is arranged on the upper side of the connection part of the exhaust pipe 5 and the storage tank 4; the heating resistance wire 52 is electrified through the control panel 102, so that the connection part of the air extraction pipe 5 and the storage tank 4 is heated, and the frosting in the air extraction pipe 5 caused when low-temperature nitrogen in the storage tank 4 is discharged to the filter tank 6 upwards through the air extraction pipe 5 is effectively prevented, so that the rapid passing of nitrogen in the air extraction pipe 5 after heating is facilitated.
The liquid level sensing assembly 14 is provided with a cavity 141, the top of the inner side of the cavity 141 is provided with a slide rheostat 142, the bottom of the cavity 141 is connected with a slide rod 143 in a sliding manner, the upper part of the slide rod 143 is connected with a slide block 145, the slide block 145 is positioned under the slide rheostat 142, the bottom of the slide rod 143 is connected with a floating ball 144, and the floating ball 144 is positioned on the outer side of the cavity 141; as shown in fig. 4, when the liquid pump 31 is turned on, the liquid nitrogen in the nitrogen liquefier body 2 is pumped into the storage tank 4 through the liquid pumping pipe 3, when the liquid level of the liquid nitrogen in the storage tank 4 is higher, the liquid nitrogen contacts with the bottom of the floating ball 144 on the liquid level sensing assembly 14, the sliding rod 143 above the floating ball 144 is pushed up by the buoyancy of the liquid nitrogen, the sliding rod 143 slides at the bottom of the cavity 141 to drive the sliding block 145 to contact with the surface of the sliding rheostat 142, so that the resistance value of the sliding rheostat 142 is changed, namely, the resistance value of the sliding rheostat 142 is continuously increased along with the increase of the sliding distance of the sliding block 145 on the sliding rheostat 142, the current passing through the liquid pump 31 is continuously reduced, when the sliding block 145 moves to the uppermost end of the sliding rheostat 142, no current passes through the sliding rheostat 142, and the liquid pump 31 is closed, so that the liquid pumping pipe 3 stops liquid nitrogen pumping.
The control panel 102 is electrically connected with the liquid pump 31, the electromagnetic valve 51, the heating resistance wire 52, the three-way valve 8, the vacuum pump 10, the pressure gauge 13 and the liquid level sensing assembly 14 respectively.
According to the utility model, through the cooperation of the liquid pump 31 and the sliding rheostat 142 in the liquid level sensing assembly 14, the automatic control of the liquid level of liquid nitrogen in the storage tank 4 is realized, when the liquid level and the air pressure in the storage tank 4 continuously change to reach the upper limit value set at the pressure gauge 13, the electromagnetic valve 51 is automatically opened, nitrogen on the upper surface of the liquid nitrogen in the storage tank 4 is discharged into the filtering tank 6 by the air suction pipe 5 for filtering, when the electromagnetic valve 51 is closed, the valve on the liquid nitrogen lower discharge pipe 12 can be opened to discharge part of liquid nitrogen for food refrigeration, metallurgical industry and the like, and the steps are repeated, so that the separation of the liquid nitrogen and the nitrogen can be continuously realized; the vacuum pump 10 is started to perform vacuumizing operation on the interlayer 42 by utilizing the pump pipe 11, double heat preservation of heat preservation cotton in the outer cladding plate 41 and the inner lining plate 43 is utilized, and the heat loss of liquid nitrogen in the storage tank 4 is further reduced by combining the vacuum environment of the interlayer 42, so that the stability of the liquid nitrogen in the storage tank 4 is ensured.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. An air separation plant having a nitrogen liquefier, comprising: the liquid nitrogen storage box comprises a box body (1), wherein an access door (101) is rotationally connected to the side edge of the box body (1), a control panel (102) is arranged on the access door (101), a nitrogen liquefier body (2) is arranged inside the box body (1), a storage box (4) is connected to the nitrogen liquefier body (2) through a liquid suction pipe (3), a liquid pump (31) is arranged on the liquid suction pipe (3), a liquid nitrogen lower calandria (12) is arranged at the bottom of the storage box (4) and extends to the outside of the box body (1), and a liquid level sensing assembly (14) is arranged at the top of the inner side of the storage box (4) and used for measuring the liquid nitrogen liquid level height in the storage box (4);
be provided with manometer (13) on bin (4), bin (4) upside is connected with filtration jar (6) through exhaust tube (5), be provided with solenoid valve (51) on exhaust tube (5), filtration jar (6) top is connected with three-way valve (8) through blast pipe (7), connect on three-way valve (8) and be provided with outer calandria (81), branch pipe (82), outer calandria (81) extend to box (1) outside, branch pipe (82) are kept away from being connected with nitrogen gas storage jar (9) in three-way valve (8) direction.
2. An air separation plant with a nitrogen liquefier according to claim 1, characterized in that the storage tank (4) is provided with an outer cover plate (41), an interlayer (42) and an inner lining plate (43) in sequence from outside to inside.
3. An air separation plant with nitrogen liquefier according to claim 2, characterized in that the outer cover plate (41) and the inner liner plate (43) are filled with heat insulation cotton.
4. An air separation plant with a nitrogen liquefier according to claim 2, characterized in that the outside of the storage tank (4) is provided with a vacuum pump (10), which vacuum pump (10) is connected to an intermediate layer (42) by means of a pump pipe (11).
5. An air separation unit with nitrogen liquefier as claimed in claim 1, wherein a heating resistance wire (52) is arranged at the upper side of the connection part of the air extraction pipe (5) and the storage tank (4).
6. The air separation device with the nitrogen liquefier according to claim 1, wherein a cavity (141) is arranged on the liquid level sensing assembly (14), a sliding rheostat (142) is arranged at the top of the inner side of the cavity (141), a sliding rod (143) is connected to the bottom of the cavity (141) in a sliding mode, a sliding block (145) is connected to the upper portion of the sliding rod (143), the sliding block (145) is located right below the sliding rheostat (142), a floating ball (144) is connected to the bottom of the sliding rod (143), and the floating ball (144) is located on the outer side of the cavity (141).
7. The air separation device with the nitrogen liquefier according to claim 6, wherein the control panel (102) is electrically connected with the liquid pump (31), the electromagnetic valve (51), the heating resistance wire (52), the three-way valve (8), the vacuum pump (10), the pressure gauge (13) and the liquid level sensing assembly (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164926.5U CN219868775U (en) | 2023-05-15 | 2023-05-15 | Air separation device with nitrogen liquefier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321164926.5U CN219868775U (en) | 2023-05-15 | 2023-05-15 | Air separation device with nitrogen liquefier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219868775U true CN219868775U (en) | 2023-10-20 |
Family
ID=88343687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321164926.5U Active CN219868775U (en) | 2023-05-15 | 2023-05-15 | Air separation device with nitrogen liquefier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219868775U (en) |
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2023
- 2023-05-15 CN CN202321164926.5U patent/CN219868775U/en active Active
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