CN107539633B - Portable outdoor anhydrous oxygen environment obtains transfer device - Google Patents
Portable outdoor anhydrous oxygen environment obtains transfer device Download PDFInfo
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- CN107539633B CN107539633B CN201610801718.XA CN201610801718A CN107539633B CN 107539633 B CN107539633 B CN 107539633B CN 201610801718 A CN201610801718 A CN 201610801718A CN 107539633 B CN107539633 B CN 107539633B
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Abstract
the invention discloses a portable outdoor anhydrous oxygen environment obtaining transfer device which comprises a sealed transfer box, a vacuum air extractor, a nitrogen filling device and a power supply for supplying power to the sealed transfer box, wherein the sealed transfer box is vacuumized through the peripheral vacuum air extractor, then high-purity nitrogen is filled through the nitrogen filling device, an air filling fine adjustment valve on an air extraction pipeline of the vacuum air extractor is connected with a self-sealing joint matched with a nitrogen pipeline of the nitrogen filling device, the air filling fine adjustment valve and the self-sealing joint are switched for three times, and a micro-positive pressure high-purity nitrogen environment with water and oxygen contents within 1ppm is quickly formed in the sealed transfer box. According to the invention, after a sample is placed in the sealed transfer box and sealed, the sealed transfer box can be quickly connected with the vacuum air exhaust device and the nitrogen filling device to perform vacuum replacement on high-purity nitrogen, the nitrogen filling is performed until the strength and the sealing performance of the nitrogen filling box reach 1500Pa, the modular design is adopted, the weight of equipment is reduced, and the portability is improved.
Description
Technical Field
The invention belongs to the technical field of obtaining a vacuum environment, and particularly relates to a transfer device for quickly obtaining a stable anhydrous and oxygen environment around a transferred sample outdoors, so as to prevent the transferred sample from reacting due to long-time contact with the water and oxygen environment in the process of transferring to a laboratory, and the transfer device is suitable for transferring the sample sensitive to the water and oxygen environment.
Background
At present, for samples which are obtained outdoors and are not easy to contact with water and oxygen environments for a long time, the transportation protection method for transporting the samples to a laboratory generally comprises three methods: 1. directly putting the sample into a vacuum sealing bag, removing air by a vacuum method, and then sealing; 2. putting a sample into a sealed box body with an air charging and exhausting port, then charging nitrogen into the air charging port, and exhausting the mixed gas of background air and the nitrogen of the box body through the air exhausting port, so that after a period of time, a valve of the air charging and exhausting port is closed, and a relatively pure nitrogen environment can be formed in the sealed box; 3. the sample is put into a sealed box with a molecular sieve and copper catalase, and water and oxygen molecules in background air in the sealed box are removed by means of the molecular sieve and the copper catalase to form a relatively stable environment.
All three methods have certain problems. In the first method, the sample is extruded by the sealing bag under the atmospheric pressure to cause the deformation of the sample, the material pollution is caused when the sealing bag is extruded and contacted with the sample, in addition, the sealing bag and the sample cannot be completely attached, the air removal is not thorough, the concentration of water and oxygen is high, and the vacuum environment around the sample and the pressure difference in the sample also have influence on the sample; the method 2 has long environment establishment time, and the air flow movement in the internal inflation process can accelerate the influence on the sample; the 3 rd method also has a long environment build-up time and there is a release contamination after adsorbent saturation requiring maintenance regeneration and temperature increase.
therefore, there is a need for a gas environment acquisition transfer device for outdoor use that can quickly establish a long-term stable, reliable, extremely low water and oxygen concentration, and no extrusion and contamination of the product around the sample.
Disclosure of Invention
The invention aims to provide a gas environment acquisition and transportation device which is used outdoors and can quickly establish a long-term stable and reliable gas environment acquisition and transportation device with extremely low water and oxygen concentration and no extrusion and pollution to products around a sample.
The purpose of the invention is realized by the following technical scheme:
Portable outdoor anhydrous oxygen environment obtains transfer device, including sealed transfer box, vacuum air exhaust device, fill the nitrogen gas device and be used for the power supply for two device power supplies, sealed transfer box carries out the evacuation through outlying vacuum air exhaust device, then fill into high-purity nitrogen gas through filling the nitrogen gas device, the self sealss joint that the fine setting valve of aerifing on vacuum air exhaust device's the exhaust line pairs with the nitrogen gas pipeline that fills the nitrogen gas device is connected, both switch the cubic, form water fast in sealed transfer box, the oxygen content all is the high-purity nitrogen gas environment of pressure-fired within 1 ppm.
The sealed transfer box is a loading device for a sample transfer process, the main structure of the sealed transfer box comprises a box body, a box door/cover and a sealed space formed by a sealing ring, a sample mounting, fixing and buffering structure is arranged in the sealed transfer box, an inflation inlet is arranged outside the sealed transfer box, and a clamping device capable of quickly pre-tightening and locking the door/cover is arranged outside the sealed transfer box.
Further, the upper part of the sealed transfer box is also provided with a handle.
Further, the volume of the sealed transfer box is 1L-100L.
Wherein, vacuum air exhaust device mainly comprises vacuum pump, valve, manometer, pressure sensor, exhaust line, fills the nitrogen gas interface, and the vacuum pump passes through the vacuum pump exhaust valve and connects the cross, and the other three interface of cross connects bleed valve, aerifys trim valve and self sealss quick connector one through the pipeline respectively, and self sealss quick connector one is used for being connected with the inflation inlet of sealed transport case through the control valve, aerifys the other end of trim valve and the one end intercommunication of self sealss quick connector two.
Furthermore, a pressure sensor and a pressure gauge are arranged on the pipeline of the four-way joint and the self-sealing quick joint I.
The nitrogen filling device mainly comprises a nitrogen cylinder, a main cylinder valve, a pressure reducing valve, a filter and a safety valve, wherein the nitrogen cylinder is communicated with the other end of the self-sealing quick connector II through the main cylinder valve, the pressure reducing valve, the safety valve and the filter in sequence.
Wherein, the nitrogen cylinder is also provided with a gas supplementing valve which is used for being communicated with a nitrogen supplementing gas source.
wherein, the specification of vacuum pump and the volume phase-match of sealed transport case.
the power supply mainly comprises a colloid storage battery, an auxiliary connecting circuit and a panel and is used for supplying power to the vacuum air pumping device.
Further, the power supply belongs to a rechargeable mobile power supply.
Wherein, the vacuum air exhaust device, the nitrogen filling device and the power supply can be integrated in a box body.
Wherein, the volume and the pressure of the nitrogen bottle are selected according to 10 times of the ventilation volume of 3 times, and the nitrogen bottle with the concentration of more than or equal to 99.9995 percent is selected.
Wherein, the pressure reducing valve and the inflation trim valve are matched to control the micro-positive pressure in the sealed transfer box.
compared with the prior art, the portable outdoor anhydrous oxygen environment obtaining and transferring device can realize that a sealed transferring box can be quickly connected with a vacuum air extracting device and a nitrogen filling device for vacuum replacement of high-purity nitrogen after a sample is placed in the sealed transferring box for sealing, and can meet the requirements of strength and sealing performance (the leakage rate under vacuum and micro-positive pressure is less than or equal to 1 x 10 < -6 > Pa.m 3/s) when the interior is vacuumized to 1000Pa and the nitrogen filling is up to 1500Pa (gauge pressure). The invention adopts the modular design to reduce the weight of the equipment and improve the portability.
drawings
FIG. 1 is a schematic diagram of an in-situ testing system for spectral reflectance under a vacuum environment according to the present invention.
In the figure: 1-sealed transfer box, 2-vacuum pumping device, 2.1-vacuum pressure sensor, 2.2-vacuum pump exhaust valve, 2.3-vacuum pump, 2.4-air release valve, 2.5-self-sealed quick connector, 2.6-air exhaust pipeline, 2.7-vacuum pressure gauge, 2.8-air inflation fine adjustment valve, 3-nitrogen filling device, 3.1-filter, 3.2-safety valve, 3.3-pressure reducing valve, 3.4-gas cylinder main valve, 3.5-nitrogen cylinder, 3.6-air make-up valve and 4-power supply.
Detailed Description
The following is a description of the present invention, which is further illustrated by the following embodiments. The following detailed description, of course, is merely illustrative of various aspects of the invention and is not to be construed as limiting the scope of the invention.
Referring to fig. 1, fig. 1 is a structural composition diagram of a portable outdoor anhydrous oxygen environment acquisition and transfer device of the present invention, which comprises: the device comprises a sealed transfer box 1, a vacuum air extractor 2, a nitrogen filling device 3 and a power supply 4. 4 parts adopt modular structure to be convenient for personnel to carry and take, on-vehicle transportation, and the sample article can carry out anhydrous, oxygen environment replacement to sealed transfer box in after the scene is assembled, unpacks each module apart and transports after the environment replacement finishes. Particularly, portable outdoor anhydrous oxygen environment obtains transfer device, including sealed transfer box 1, vacuum air exhaust device 2, fill nitrogen gas device 3 and be used for the power supply 4 for two device power supplies, sealed transfer box 1 carries out the evacuation through outlying vacuum air exhaust device 2, then fill into high-purity nitrogen gas through filling nitrogen gas device 3, the self sealss joint connection that aerifys trim valve 2.8 on vacuum air exhaust device 2's the exhaust line and the nitrogen gas pipeline that fills nitrogen gas device 3 pairs, both switch the cubic, form water fast in sealed transfer box, the oxygen content all is the high-purity nitrogen gas environment of pressure-fired that is within 1 ppm. The sealed transfer box 1 is a loading device for a sample transfer process, the main structure of the sealed transfer box comprises a box body, a box door/cover and a sealed space formed by a sealing ring, a sample mounting, fixing and buffering structure is arranged in the sealed transfer box, an inflation inlet is arranged outside the sealed transfer box, and a clamping device capable of quickly pre-tightening and locking the door/cover is arranged outside the sealed transfer box. In a specific embodiment, the vacuum pumping device, the nitrogen filling device and the power supply can be integrated in a box body. The volume and pressure of the nitrogen cylinder are selected according to 10 times of the ventilation volume of 3 times, and the nitrogen cylinder with the concentration of more than or equal to 99.9995 percent is selected.
In a specific embodiment, the upper part of the sealed transfer box is also provided with a handle, and the volume of the sealed transfer box is 1L-100L. The sealed transfer box 1 can be designed according to the characteristics of the shape, size and the like of a transferred sample, the general appearance can be designed to be square or cylindrical, the box body can be made of stainless steel, aluminum alloy, glass, quartz glass, titanium alloy and other materials with certain strength, compactness and stable chemical/physical properties, and if the sample has higher requirement on non-magnetism, the general materials can be made of titanium alloy and non-magnetic stainless steel such as 316L. The transfer box is provided with a door/cover for entering and exiting samples and is sealed with the box body through a sealing gasket, the sealing gasket can be an O-shaped sealing ring made of materials such as fluororubber, nitrile rubber and the like, and the box body and the box cover are pre-tightened and sealed through an externally-mounted clamping pull buckle. A sample cushion pad/female die, a clamping device and an inlet anti-knocking edge are designed inside the transfer box. The vacuumizing and nitrogen filling interface can be designed to be one (shared), an external valve or an internal valve can be installed, and a self-sealing quick interface is installed on the valve. After the sealing transfer box is installedThe leak detection test of the tightness can be carried out according to the grade required by the tightness, the transfer box can be put into use after being qualified, the leak detection of the transfer box with higher requirement on the tightness can be carried out by adopting a helium mass spectrometry vacuum method or a suction gun method, and the leak rate is less than or equal to 1 multiplied by 10-6Pa · m 3/s. The transfer box is in the use pressure range: the sealing and strength requirements can be met from a vacuum environment with the absolute pressure of 1000Pa to a micro positive pressure with the gauge pressure of 1500Pa (the pressure is allowed to exceed 500 Pa).
As shown in fig. 1, the vacuum pumping device mainly comprises a vacuum pump 2.3, a valve, a vacuum pressure gauge 2.7, a pressure sensor 2.2, a pumping pipeline 2.6 and a nitrogen-filled interface, wherein the vacuum pump 2.3 is connected with a four-way through a vacuum pump pumping valve 2.2, the other three interfaces of the four-way are respectively connected with a release valve 2.4, an inflation fine-adjustment valve 2.8 and a self-sealing quick connector one 2.5 through pipelines, the self-sealing quick connector one 2.5 is connected with an inflation port of a sealed transfer box through a control valve, and the other end of the inflation fine-adjustment valve 2.8 is communicated with one end of the self-sealing quick connector two. And a vacuum pressure sensor 2.2 and a vacuum pressure gauge 2.7 are also arranged on a pipeline of the four-way joint and the self-sealing quick joint I2.5. The specification of the vacuum pump is matched with the volume of the sealed transfer box. The vacuum extractor 2 is designed to be relatively small, compact and integrated into an instrument safety box for portability for outdoor use, and can be integrally incorporated into the instrument safety box. The vacuum pump 2.3 of the core equipment of the vacuum pumping device has multiple choices, DC24V is generally selected for power supply, the vacuum diaphragm pump with the ultimate vacuum superior to 1000Pa is selected, the specification size of the vacuum pump is calculated and selected according to the conditions of the volume of the sealed transfer box and the like, the absolute pressure sensor 2.1 with the on-site display function is adopted as the vacuum pressure sensor, the vacuum pressure gauge 2.7 is made of stainless steel, and the vacuum pumping pipeline 2.6 and the valve 2.2/2.4/2.8 are made of stainless steel. The operation, display and power supply input ports and the pipeline connecting ports of the vacuum air pumping device are integrated on the stainless steel wire drawing panel, so that the operation is convenient. The vacuum pumping pipeline adopts a stainless steel corrugated pipe, and the connection with the sealed transfer box adopts a self-sealing joint 2.5.
The nitrogen filling device mainly comprises a nitrogen cylinder 3.5, a cylinder main valve 3.4, a pressure reducing valve 3.3, a filter 3.1 and a safety valve 3.2, wherein the nitrogen cylinder 3.5 is communicated with the other end of the self-sealing quick connector II through the cylinder main valve 3.4, the pressure reducing valve 3.3, the safety valve 3.2 and the filter 3.1 in sequence. The nitrogen cylinder is also provided with a gas supplementing valve 3.6 which is used for being communicated with a nitrogen supplementing gas source. Wherein, the pressure reducing valve and the inflation trim valve are matched to control the micro-positive pressure in the sealed transfer box. The nitrogen charging device 3 is also designed to be relatively small, compact and integrated into an instrument safety box for portability for outdoor use. The volume of a nitrogen cylinder 3.5 of core equipment of the nitrogen filling device is selected according to various specifications such as 2L, 4L, 8L, 10L, 15L and the like, the pressure is also selected according to various specifications such as 10MPa, 15MPa, 20MPa and the like, the materials can be selected from stainless steel, aluminum alloy and other materials, and the above and nitrogen concentration can be selected according to the actual nitrogen requirement. The pressure reducing valve 3.3 is selected according to the pressure of the gas cylinder, stainless steel is selected as a material, the filter 3.1 is a stainless steel T-shaped filter with a filter element capable of being replaced online, the safety valve 3.2 is a product with the bursting pressure of 0.5atm, the gas supplementing valve 3.6 is a high-pressure-resistant stainless steel manual stop valve, the nitrogen filling pipeline is a stainless steel corrugated pipe, and the nitrogen filling pipeline is connected with the gas filling fine adjustment valve and adopts a self-sealing joint. All connectors adopt the connection and sealing forms of high pressure resistant pipe threads, cutting sleeves, VCRs and the like.
The power supply mainly comprises a colloid storage battery, an auxiliary connecting circuit and a panel and is used for supplying power to the vacuum air pumping device. In a specific embodiment, the power source is a rechargeable mobile power source. The power supply 4 is also designed to be relatively small, compact and integrated into the instrument safety box for portability for outdoor use. The core equipment power supply of the power supply adopts two rechargeable storage batteries output by DC12V and connected in series for use, can provide DC24V electric energy output, and the electric capacity and the power are selected according to the vacuum air extractor, so that the normal use of the vacuum air extractor can be ensured, and certain margin is provided. Two storage batteries, an attached connecting circuit and an attached panel are arranged in the safety box. The panel is provided with a power switch, an output interface and a charging interface, and the interface connector is a Y2-4 type aviation plug. In order to monitor the output voltage of the power supply in real time and estimate the current residual power and the endurance time to display the current residual power and the endurance time to a user, a set of micro-processing unit based on a single chip microcomputer is arranged and matched with a dot-matrix liquid crystal display, the current output voltage value can be displayed on the liquid crystal display, and the residual power and the endurance time can be estimated according to the voltage value. The panel is made of bakelite.
When in use, the vacuum pump is used for vacuumizing the inside of the sealed transfer box, and background conditions are created for replacing nitrogen. After the vacuumizing replacement process is generally carried out for 3 times, the background air content in the sealed transfer box is 1/1000000, and the oxygen content in the air is 21 percent, the water content is less than 0.03 percent, the final oxygen concentration is less than 1ppm, and the water molecule concentration is lower. The time from single vacuum pumping to 1000Pa is generally controlled to be about 3min, and the required vacuum pump specification can be calculated according to the net space volume in the sealed transfer box.
The portable outdoor anhydrous oxygen environment obtaining and transferring device has the following beneficial effects:
(1) The sample can be rapidly processed on the outdoor site, a stable anhydrous and oxygen environment is obtained around the transferred sample, and the initial state of the sample is well maintained;
(2) The processing process does not cause the shape, the structure and the component pollution of the sample caused by the extrusion of other materials on the sample;
(3) the obtained environmental water and oxygen have low concentration;
(4) The environment establishment time is short, the efficiency is high, and the maintenance time is long;
(5) The sealed transfer box body has high strength, has a protection effect on a sample, and is internally provided with a buffering and clamping tool, so that the safety of the sample transfer process is ensured;
(6) The non-adsorptive material maintains the environment, the process is irreversible, and the pollution of released substances and regeneration maintenance work caused by saturation and temperature change do not exist;
(7) The sealed transfer box has simple structure and high reliability, and does not need continuous environment maintenance system work after the internal environment is established; the modular structure is convenient to carry, transport and carry.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the present invention, and that the resulting functional effects would still fall within the scope of the present invention without departing from the spirit of the present invention covered by the description and drawings.
Claims (7)
1. The portable outdoor anhydrous oxygen environment obtaining and transferring device comprises a sealed transferring box, a vacuum air extractor, a nitrogen filling device and a power supply for supplying power to the two devices, wherein, the sealed transfer box is vacuumized by a peripheral vacuum air extractor, then is filled with high-purity nitrogen by a nitrogen filling device, an inflation fine adjustment valve on an air extraction pipeline of the vacuum air extractor is connected with a self-sealing joint matched with a nitrogen pipeline of the nitrogen filling device, the two are switched for three times, a micro-positive pressure high-purity nitrogen environment with water and oxygen contents within 1ppm is quickly formed in the sealed transfer box, the sealed transfer box is a loading device in the sample transfer process, the main structure of the sealed transfer box comprises a sealed space formed by a box body, a box door/cover and a sealing ring, a sample mounting, fixing and buffering structure is arranged in the sealed space, an inflation inlet is arranged outside the sealed space, and a clamping device capable of quickly pre-tightening and locking the door/cover is arranged outside the sealed space; the vacuum air extractor mainly comprises a vacuum pump, a valve, a pressure gauge, a pressure sensor, an air extraction pipeline and a nitrogen filling interface, wherein the vacuum pump is connected with a four-way valve through the air extraction valve of the vacuum pump, the other three interfaces of the four-way valve are respectively connected with an air release valve, an air inflation fine adjustment valve and a self-sealing quick connector I through pipelines, the self-sealing quick connector I is used for being connected with an air inflation port of a sealed transfer box through a control valve, and the other end of the air inflation fine adjustment valve is communicated with one end of a self; the nitrogen filling device mainly comprises a nitrogen cylinder, a main cylinder valve, a pressure reducing valve, a filter and a safety valve, wherein the nitrogen cylinder is communicated with the other end of the self-sealing quick connector II through the main cylinder valve, the pressure reducing valve, the safety valve and the filter in sequence, and the pressure reducing valve and the inflation fine adjustment valve are matched to control the micro-positive pressure in the sealed transfer box.
2. The apparatus of claim 1, wherein the sealed transfer box is further provided with a handle at an upper portion thereof.
3. The device of claim 1, wherein the sealed transfer chamber has a volume of 1L to 100L.
4. The device of claim 1, wherein the pipeline of the four-way joint and the pipeline of the self-sealing quick connector I are also provided with a pressure sensor and a pressure gauge.
5. The apparatus of any one of claims 1 to 3, wherein the nitrogen cylinder is further provided with a make-up gas valve for communication with a source of make-up nitrogen gas.
6. The apparatus of any of claims 1-3, wherein the vacuum pump is sized to match the volume of the sealed transfer box.
7. A device as claimed in any one of claims 1 to 3, wherein the power supply consists essentially of a gel accumulator and associated connecting lines and panels for supplying power to the vacuum pumping means, the power supply being a rechargeable portable power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801718.XA CN107539633B (en) | 2016-09-05 | 2016-09-05 | Portable outdoor anhydrous oxygen environment obtains transfer device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610801718.XA CN107539633B (en) | 2016-09-05 | 2016-09-05 | Portable outdoor anhydrous oxygen environment obtains transfer device |
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| CN107539633A CN107539633A (en) | 2018-01-05 |
| CN107539633B true CN107539633B (en) | 2019-12-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769368A (en) * | 2004-11-02 | 2006-05-10 | 铼宝科技股份有限公司 | Vacuum transportation and purification apparatus |
| CN201162940Y (en) * | 2008-02-02 | 2008-12-10 | 河南中光学集团有限公司 | Automatic vacuum nitrogen filling box |
| CN103409314A (en) * | 2013-08-19 | 2013-11-27 | 连云港市产品质量监督检验中心 | Portable anaerobion sampling and strain transferring device |
| CN105730887A (en) * | 2016-05-10 | 2016-07-06 | 山东省农业科学院农业质量标准与检测技术研究所 | Portable preservation box for detecting and sampling apple pesticide residues |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112013002936B1 (en) * | 2010-08-06 | 2020-09-29 | Hospira Australia Pty Ltd | PREPARATION METHOD UNDERSTANDING A PLASTER OF BOTTLES |
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- 2016-09-05 CN CN201610801718.XA patent/CN107539633B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1769368A (en) * | 2004-11-02 | 2006-05-10 | 铼宝科技股份有限公司 | Vacuum transportation and purification apparatus |
| CN201162940Y (en) * | 2008-02-02 | 2008-12-10 | 河南中光学集团有限公司 | Automatic vacuum nitrogen filling box |
| CN103409314A (en) * | 2013-08-19 | 2013-11-27 | 连云港市产品质量监督检验中心 | Portable anaerobion sampling and strain transferring device |
| CN105730887A (en) * | 2016-05-10 | 2016-07-06 | 山东省农业科学院农业质量标准与检测技术研究所 | Portable preservation box for detecting and sampling apple pesticide residues |
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