CN114440119A - Liquid nitrogen filling machine of float-type automatic control liquid level - Google Patents
Liquid nitrogen filling machine of float-type automatic control liquid level Download PDFInfo
- Publication number
- CN114440119A CN114440119A CN202210086168.3A CN202210086168A CN114440119A CN 114440119 A CN114440119 A CN 114440119A CN 202210086168 A CN202210086168 A CN 202210086168A CN 114440119 A CN114440119 A CN 114440119A
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- CN
- China
- Prior art keywords
- liquid nitrogen
- storage tank
- float
- liquid
- filling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/10—Arrangements for preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0391—Thermal insulations by vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/013—Single phase liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vacuum Packaging (AREA)
Abstract
The invention discloses a float-type liquid nitrogen filling machine capable of automatically controlling liquid level.A float valve seat is arranged at a liquid inlet position at the top end of a liquid nitrogen storage tank, and a communication port of the float valve seat is arranged in a conical opening manner towards the inside of the liquid nitrogen storage tank; a float bowl is arranged in the liquid nitrogen storage tank, and the outer side wall of the float bowl is arranged in a gap with the inner cavity wall of the liquid nitrogen storage tank; the upper surface of the float is provided with a float valve needle which is matched and sealed with a float valve seat. According to the invention, liquid nitrogen in the liquid nitrogen storage tank rises, and when the buoy rises to the top end due to buoyancy of the liquid nitrogen, the valve needle of the buoy is tightly combined with the valve seat of the buoy, the valve is closed, and liquid feeding is stopped. The liquid nitrogen in the liquid nitrogen storage tank descends, the buoy descends due to gravity, the buoy valve needle is separated from the buoy valve seat, and the valve is opened to supply the liquid nitrogen. Thereby achieving a mechanical liquid nitrogen filling machine capable of automatically controlling liquid level.
Description
Technical Field
The invention relates to the technical field of liquid nitrogen filling machines, in particular to a float-type liquid nitrogen filling machine capable of automatically controlling liquid level.
Background
In the industries of beverage food, oil products and seasoning products, liquid nitrogen is widely used for fresh keeping, pressurization, cooling and the like. In the industries, liquid nitrogen needs to be quantitatively and accurately added into a product container, and the oxygen content in the container is reduced to achieve the effect of preservation; after the liquid nitrogen is dripped into the container, the liquid nitrogen absorbs heat to vaporize and expand, so that the internal pressure is increased, the flat bottles are reduced, and the transportation is convenient. The gram weight of the container can also be reduced by increasing the internal pressure. In liquid nitrogen filling equipment, a float-type liquid nitrogen filling machine capable of automatically controlling liquid level is invented by utilizing the principle of mechanical lever.
Disclosure of Invention
The invention aims to provide a float-type liquid nitrogen filling machine capable of automatically controlling liquid level, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a float-type liquid nitrogen filling machine capable of automatically controlling liquid level comprises a nitrogen filling machine body, wherein a nitrogen filling machine liquid inlet, a liquid nitrogen storage tank and a nitrogen filling machine nitrogen filling head are arranged on the nitrogen filling machine body; a float bowl valve seat is arranged at the liquid inlet position at the top end of the liquid nitrogen storage tank, and a communication port of the float bowl valve seat is arranged in the liquid nitrogen storage tank in a conical opening manner; a float bowl is arranged in the liquid nitrogen storage tank, and the outer side wall of the float bowl is arranged in a gap with the inner cavity wall of the liquid nitrogen storage tank; the upper surface of the float is provided with a float valve needle which is matched and sealed with a float valve seat.
Furthermore, a vacuum layer is arranged between the nitrogen injection machine body and the liquid nitrogen storage tank, the liquid nitrogen storage tank is arranged in a covering mode of the vacuum layer, and the vacuum layer is used for preserving heat and insulating heat of the liquid nitrogen storage tank.
Furthermore, a vacuumizing port is arranged on the outer side of the nitrogen injection machine body and communicated with the inner cavity of the vacuum layer.
Furthermore, an exhaust port is arranged at the bottom of the nitrogen injection machine body and communicated with an inner cavity of the liquid nitrogen storage tank.
Furthermore, a self-temperature-control heater is sleeved on the outlet of the exhaust port and the liquid dropping port of the nitrogen injection head of the nitrogen injection machine respectively; the automatic temperature control heater is detachably arranged.
Compared with the prior art, the invention has the beneficial effects that: a float-type liquid nitrogen filling machine with automatic liquid level control is characterized by that the liquid nitrogen in liquid nitrogen storage tank is passed through, and when the float is floated up to its top end by the buoyancy of liquid nitrogen, the float valve needle is tightly combined with float valve seat, and the valve is closed, and the liquid feeding is stopped. The liquid nitrogen in the liquid nitrogen storage tank descends, the buoy descends due to gravity, the buoy valve needle is separated from the buoy valve seat, and the valve is opened to supply the liquid nitrogen. Thereby achieving a mechanical liquid nitrogen filling machine capable of automatically controlling liquid level.
Drawings
FIG. 1 is an external structural view of a float-type liquid nitrogen filling machine with automatic liquid level control according to the present invention;
FIG. 2 is a sectional view of the inside of the float-type liquid nitrogen filling machine with automatic liquid level control according to the present invention.
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 the drawings, the present invention provides a technical solution: a float-type liquid nitrogen filling machine capable of automatically controlling liquid level comprises a nitrogen filling machine body 1, wherein a nitrogen filling machine liquid inlet 2, a liquid nitrogen storage tank 3 and a nitrogen filling machine nitrogen filling head 4 are arranged on the nitrogen filling machine body 1, the liquid nitrogen filling machine liquid inlet 2 is communicated with the top of the liquid nitrogen storage tank 3, and the inner bottom of the liquid nitrogen storage tank 3 is communicated with the nitrogen filling head 4 of the nitrogen filling machine; a float valve seat 5 is arranged at the liquid inlet position at the top end of the liquid nitrogen storage tank 3, and a communication port of the float valve seat 5 opens into the liquid nitrogen storage tank 3 in a conical shape; a float bowl 6 is arranged in the liquid nitrogen storage tank 3, and the outer side wall of the float bowl 6 is arranged in a gap with the inner cavity wall of the liquid nitrogen storage tank 3; the upper surface of the float 6 is provided with a float valve needle 7, and the float valve needle 7 is matched with the float valve seat 5 in a sealing manner. Liquid nitrogen flows into a liquid nitrogen storage tank 3 of the liquid nitrogen filling machine through a liquid inlet 2 of the nitrogen filling machine and a float valve seat 5, when the liquid level of the liquid nitrogen rises, a float 6 rises due to the buoyancy of the liquid nitrogen, and when the float 6 rises to the top end, a float valve needle 7 is tightly combined and sealed with the float valve seat 5 to stop liquid inlet. Thereby realizing the function of automatically controlling the liquid level in the liquid nitrogen storage tank.
Be provided with vacuum layer 8 between notes nitrogen machine fuselage 1 and the liquid nitrogen storage tank 3, vacuum layer 8 cladding is provided with liquid nitrogen storage tank 3, annotate the nitrogen machine fuselage 1 outside and be provided with evacuation mouth 9, evacuation mouth 9 and the 8 inner chambers intercommunication settings of vacuum layer. Therefore, the vacuum layer 8 is used for preserving and insulating heat of the liquid nitrogen storage tank 3, and liquid nitrogen vaporization loss and water hanging and frosting on the surface of the body of the liquid nitrogen filling machine caused by heat conduction are prevented.
An exhaust port 10 is arranged at the bottom of the nitrogen injection machine body 1, and the exhaust port 10 is communicated with the inner cavity of the liquid nitrogen storage tank 3. The liquid nitrogen in the liquid nitrogen storage tank 3 is vaporized into nitrogen gas, and the internal pressure thereof is increased. In order to keep the liquid nitrogen storage tank 3 at normal pressure all the time and avoid the influence of internal pressure on the nitrogen injection effect, vaporized nitrogen is discharged from the exhaust port 10 of the nitrogen injection machine.
An outlet of the exhaust port 10 and a drip port of the nitrogen injection head 4 of the nitrogen injection machine are respectively sleeved with a self-temperature-control heater 11; the automatic temperature control heater 11 is detachably arranged; the self-temperature-control heater 11 is used for heating the outlet of the exhaust port 10 and the liquid dropping port of the nitrogen injection head 4 of the nitrogen injection machine in a temperature-control manner, so that the phenomenon that water is hung and frosted outside the outlet of the exhaust port 10 and the liquid dropping port of the nitrogen injection head 4 of the nitrogen injection machine when low-temperature nitrogen gas and liquid nitrogen are discharged is avoided.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" 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, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
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 (5)
1. A float-type liquid nitrogen filling machine capable of automatically controlling liquid level is characterized by comprising a nitrogen filling machine body (1), wherein a nitrogen filling machine liquid inlet (2), a liquid nitrogen storage tank (3) and a nitrogen filling machine nitrogen filling head (4) are arranged on the nitrogen filling machine body (1), the liquid nitrogen filling machine liquid inlet (2) is communicated with the top of the liquid nitrogen storage tank (3), and the inner bottom of the liquid nitrogen storage tank (3) is communicated with the nitrogen filling head (4) of the nitrogen filling machine; a float valve seat (5) is arranged at a liquid inlet position at the top end of the liquid nitrogen storage tank (3), and a communication port of the float valve seat (5) opens into the liquid nitrogen storage tank (3) in a conical shape; a float bowl (6) is arranged in the liquid nitrogen storage tank (3), and the outer side wall of the float bowl (6) is arranged in a gap with the inner cavity wall of the liquid nitrogen storage tank (3); the float bowl is characterized in that a float bowl valve needle (7) is arranged on the upper surface of the float bowl (6), and the float bowl valve needle (7) is matched with a float bowl valve seat (5) in a sealing mode.
2. The liquid nitrogen filling machine of claim 1, wherein: a vacuum layer (8) is arranged between the nitrogen injection machine body (1) and the liquid nitrogen storage tank (3), the liquid nitrogen storage tank (3) is coated on the vacuum layer (8), and the vacuum layer (8) is used for preserving heat of the liquid nitrogen storage tank (3) and insulating heat.
3. The liquid nitrogen filling machine of claim 2, wherein: a vacuum-pumping port (9) is arranged on the outer side of the nitrogen injection machine body (1), and the vacuum-pumping port (9) is communicated with the inner cavity of the vacuum layer (8).
4. The liquid nitrogen filling machine of claim 1, wherein: an exhaust port (10) is arranged at the bottom of the nitrogen injection machine body (1), and the exhaust port (10) is communicated with the inner cavity of the liquid nitrogen storage tank (3).
5. The liquid nitrogen filling machine of claim 4, wherein: an outlet of the exhaust port (10) and a dropping liquid port of the nitrogen injection head (4) of the nitrogen injection machine are respectively sleeved with a self-temperature-control heater (11); the temperature self-controlling heater (11) is detachably arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086168.3A CN114440119A (en) | 2022-01-25 | 2022-01-25 | Liquid nitrogen filling machine of float-type automatic control liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086168.3A CN114440119A (en) | 2022-01-25 | 2022-01-25 | Liquid nitrogen filling machine of float-type automatic control liquid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114440119A true CN114440119A (en) | 2022-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210086168.3A Pending CN114440119A (en) | 2022-01-25 | 2022-01-25 | Liquid nitrogen filling machine of float-type automatic control liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114440119A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59106782A (en) * | 1982-12-10 | 1984-06-20 | Miyairi Shoji Kk | Erroneous operation preventing device in valve for preventing overcharging of liquefied gas |
| CN101788105A (en) * | 2009-01-22 | 2010-07-28 | 中国国际海运集装箱(集团)股份有限公司 | Limit filling device used for cryogenic liquid container and cryogenic liquid container |
| CN101886738A (en) * | 2009-05-12 | 2010-11-17 | 南通中集罐式储运设备制造有限公司 | Limit-quantity charging device and low-temperature vessel comprising same |
| CN103591454A (en) * | 2013-11-15 | 2014-02-19 | 舟山市银奇轻工机械有限公司 | Liquid nitrogen filling machine |
| JP2018031436A (en) * | 2016-08-25 | 2018-03-01 | 大陽日酸株式会社 | Frost formation preventing device and frost formation preventing method |
| US20180274729A1 (en) * | 2015-12-18 | 2018-09-27 | Cryoshelter Gmbh | Overfill protection means |
| CN209834565U (en) * | 2019-03-11 | 2019-12-24 | 太和气体（荆州）有限公司 | Antifreezing fluid tank capable of emptying liquid nitrogen |
| CN210219309U (en) * | 2019-05-31 | 2020-03-31 | 益通天然气股份有限公司 | LNG vehicle bottle is with limit for charge device |
-
2022
- 2022-01-25 CN CN202210086168.3A patent/CN114440119A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59106782A (en) * | 1982-12-10 | 1984-06-20 | Miyairi Shoji Kk | Erroneous operation preventing device in valve for preventing overcharging of liquefied gas |
| CN101788105A (en) * | 2009-01-22 | 2010-07-28 | 中国国际海运集装箱(集团)股份有限公司 | Limit filling device used for cryogenic liquid container and cryogenic liquid container |
| CN101886738A (en) * | 2009-05-12 | 2010-11-17 | 南通中集罐式储运设备制造有限公司 | Limit-quantity charging device and low-temperature vessel comprising same |
| CN103591454A (en) * | 2013-11-15 | 2014-02-19 | 舟山市银奇轻工机械有限公司 | Liquid nitrogen filling machine |
| US20180274729A1 (en) * | 2015-12-18 | 2018-09-27 | Cryoshelter Gmbh | Overfill protection means |
| JP2018031436A (en) * | 2016-08-25 | 2018-03-01 | 大陽日酸株式会社 | Frost formation preventing device and frost formation preventing method |
| CN209834565U (en) * | 2019-03-11 | 2019-12-24 | 太和气体（荆州）有限公司 | Antifreezing fluid tank capable of emptying liquid nitrogen |
| CN210219309U (en) * | 2019-05-31 | 2020-03-31 | 益通天然气股份有限公司 | LNG vehicle bottle is with limit for charge device |
Non-Patent Citations (1)
| Title |
|---|
| 马元骥: "电冰箱", vol. 1955, 商务印书馆, pages: 59 - 62 * |
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