CN115127017A - Standard gas split charging device and method - Google Patents
Standard gas split charging device and method Download PDFInfo
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- CN115127017A CN115127017A CN202210757389.9A CN202210757389A CN115127017A CN 115127017 A CN115127017 A CN 115127017A CN 202210757389 A CN202210757389 A CN 202210757389A CN 115127017 A CN115127017 A CN 115127017A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000005429 filling process Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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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
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- 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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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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
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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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
Abstract
The invention relates to the technical field of gas split charging, in particular to a split charging device and a split charging method of standard gas, wherein a vacuumizing assembly is firstly utilized for vacuumizing, so that impurity gas in the split charging device can be removed; after the vacuumizing is finished, the standard gas in the master bottle enters the sealed cavity and the third pipeline, and the first valve is closed after the reading of the first pressure gauge is stable, so that the standard gas in the master bottle can be fully and uniformly mixed before being filled into the gas cylinder to be split by the aid of the buffer; the control piston moves downwards, when the indication number of the first pressure gauge reaches the preset pressure, the standard gas in the sealed cavity and the third pipeline is filled into the gas cylinder to be filled, the piston is continuously controlled to move downwards in the gas filling process, so that the indication number of the first pressure gauge is maintained at the preset pressure, the gas can be filled in a constant-pressure mode in the gas filling process, the uniformity of the standard gas can be fully guaranteed, and the accuracy of standard gas filling can be effectively improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of gas subpackage, in particular to a standard gas subpackage device and a standard gas subpackage method.
Background
The standard gas subpackaging device is used for subpackaging bottled standard gas into other gas cylinders to be subpackaged according to a certain operation process.
At present, the standard gas is usually dispensed by pressurizing with a booster pump (for example, the dispensing methods disclosed in the patents with publication numbers CN110173623A and CN 208074586U), that is, a master cylinder or a gas source containing the standard gas is pressurized into a gas cylinder to be dispensed by the booster pump. However, this method has low uniformity of the standard gas due to the reciprocating motion of the piston of the booster pump, and therefore has low dispensing accuracy for a small volume (for example, below 2L specification) of the gas cylinder to be dispensed.
Therefore, there is a need for a standard gas dispensing device and method to solve the above-mentioned problems.
Disclosure of Invention
In order to effectively improve the accuracy of standard gas subpackaging, the embodiment of the invention provides a standard gas subpackaging device and a standard gas subpackaging method.
In a first aspect, an embodiment of the present invention provides a standard gas split charging apparatus, including:
the gas-liquid separation device comprises a mother bottle, a gas-liquid separation device and a gas-liquid separation device, wherein the mother bottle contains standard gas and is provided with a first valve;
the buffer is internally provided with a piston capable of moving up and down, the piston and the buffer enclose a closed cavity for containing the standard gas, a first pipeline communicated with the closed cavity is connected between the buffer and the first valve, the buffer is connected with a first pressure gauge through a second pipeline, and the second pipeline is communicated with the closed cavity;
the gas distribution assembly comprises a third pipeline and a second valve arranged on the third pipeline, and the third pipeline is respectively communicated with the closed cavity and the gas cylinder to be split;
the vacuumizing assembly is used for vacuumizing the closed cavity, the first pipeline, the second pipeline, the third pipeline and the gas cylinder to be subpackaged before inflating the gas cylinder to be subpackaged;
closing the first valve and opening the second valve, and vacuumizing by using the vacuumizing assembly;
after the vacuumizing is finished, closing the second valve and opening the first valve, enabling the standard gas in the mother bottle to enter the closed cavity and the third pipeline, and closing the first valve after the reading of the first pressure gauge is stable;
after the first valve is closed, the piston is controlled to move downwards, and when the reading of the first pressure gauge reaches a preset pressure, the second valve is opened so as to charge the standard gas in the closed cavity and the third pipeline into the gas cylinder to be subpackaged; and continuously controlling the piston to move downwards in the process of inflating so as to maintain the reading of the first pressure gauge at the preset pressure.
In a possible design, the device further comprises a driving assembly and a control assembly, wherein the output end of the driving assembly is connected with the piston, the control assembly is electrically connected with the driving assembly, and the control assembly is used for controlling the driving assembly to act so that the driving assembly drives the piston to move up and down.
In one possible design, the output end is provided with a displacement sensor, and the control assembly is electrically connected with the displacement sensor and the first pressure gauge respectively;
the control component is used for executing the following operations: receiving displacement data detected by the displacement sensor and pressure data detected by the first pressure gauge; determining a current volume of the enclosed cavity based on the displacement data; controlling the output end to act based on the inflation state of the gas cylinder to be subpackaged, the pressure data and the current volume; wherein the inflation status comprises being inflated and not inflated;
when the gas cylinder to be subpackaged is in a non-gas charging state, when the pressure corresponding to the pressure data does not rise to a preset pressure and the current volume does not fall to a preset volume, the control assembly controls the output end to move downwards so as to enable the piston to move downwards;
when the inflation state of the gas cylinder to be subpackaged is not inflation, when the pressure corresponding to the pressure data is increased to a preset pressure and the current volume is not reduced to a preset volume, the second valve is opened, the inflation state of the gas cylinder to be subpackaged is changed into inflation, and the control assembly controls the pressure corresponding to the pressure data to be unchanged and the output end to move downwards;
when the current volume is reduced to a preset volume, the control assembly controls the output end to stop acting.
In one possible design, the control assembly includes a pressure display screen for displaying a pressure corresponding to the pressure data and a volume display screen for displaying the current volume;
when the pressure displayed by the pressure display screen does not rise to the preset pressure and the volume displayed by the volume display screen drops to the preset volume, the standard gas in the mother bottle is in an unfilled state.
In a possible design, the inner wall of the buffer is provided with a limit structure, the volume of the closed cavity below the horizontal plane where the limit structure is located is smaller than the preset volume, and the position where the first pipeline is connected with the buffer, the position where the second pipeline is connected with the buffer, and the position where the third pipeline is connected with the buffer are all located below the limit structure.
In a possible design, a pressure relief valve is further arranged in the buffer, and the position where the pressure relief valve is connected with the buffer is located below the limiting structure.
In one possible design, the vacuum pumping assembly includes a fourth pipeline, and a third valve, a vacuum gauge and a vacuum pump which are arranged on the fourth pipeline, the fourth pipeline is communicated with the sealed cavity, and the third valve and the vacuum gauge are arranged between the vacuum pump and the buffer.
In one possible design, the number of the second valves is two, the number of the third valves is two, the number of the vacuum gauges is two, and the fourth pipeline is further communicated with the third pipeline;
one end of the fourth pipeline, which is connected with the third pipeline, is arranged between the two second valves, one of the third valves and one of the vacuum meters are arranged between the vacuum pump and one end of the fourth pipeline, which is connected with the third pipeline, and the other of the third valves and the other of the vacuum meters are arranged between the vacuum pump and the buffer.
In a possible design, the third pipeline with the one end of treating the partial shipment gas cylinder is provided with the row of converging the gas including many branch roads, it is arranged that each of converging the gas the branch road all with one treat the partial shipment gas cylinder and be connected.
In a possible design, the third pipeline between the gas cylinder to be dispensed and the second valve closest to the gas cylinder to be dispensed is further connected with a second pressure gauge, and the second pressure gauge is used for measuring the pressure of the gas cylinder to be dispensed after the second valve is closed.
In a second aspect, an embodiment of the present invention further provides a standard gas split charging method, which is applied to any one of the standard gas split charging apparatuses described above, and the method includes:
and (3) vacuumizing: closing the first valve and opening the second valve, and vacuumizing by using the vacuumizing assembly;
gas mixing step: after the vacuumizing step is finished, closing the second valve and opening the first valve, enabling the standard gas in the mother bottle to enter the closed cavity and the third pipeline, and closing the first valve after the reading of the first pressure gauge is stable;
gas filling: after the gas mixing step is finished, controlling the piston to move downwards, and opening the second valve when the reading of the first pressure gauge reaches a preset pressure so as to fill the standard gas in the sealed cavity and the third pipeline into the gas cylinder to be split charged; and the piston is continuously controlled to move downwards in the process of inflation, so that the number of the first pressure gauge is maintained at the preset pressure.
The embodiment of the invention provides a standard gas split charging device and a split charging method, wherein a first valve is closed, a second valve is opened, and a vacuumizing assembly is used for vacuumizing, so that impurity gas in the split charging device can be removed; after the vacuumizing is finished, the second valve is closed and the first valve is opened, the standard gas in the master bottle enters the closed cavity and the third pipeline, and the first valve is closed after the reading of the first pressure gauge is stable, so that the standard gas in the master bottle can be fully and uniformly mixed before being filled into the gas cylinder to be split; after closing first valve, the control piston moves down, when the registration of first manometer reaches preset pressure, open the second valve, in order to fill the standard gas in airtight cavity and the third pipeline into waiting to adorn the partial shipment gas cylinder, continuous control piston downstream at the in-process of aerifing, so that the registration of first manometer maintains at preset pressure, can guarantee like this that gas fills the in-process gas and fills with the mode of constant voltage and fill, thereby can fully guarantee the degree of consistency of standard gas, and then can effectively improve the degree of accuracy of standard gas partial shipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a standard gas split charging apparatus according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a standard gas dispensing method according to an embodiment of the present invention.
Reference numerals:
1-mother bottle;
11-a first valve;
12-a first conduit;
2-a buffer;
20-sealing the cavity;
21-a piston;
22-a second conduit;
23-a first pressure gauge;
24-a limit structure;
25-a pressure relief valve;
3-a gas distribution assembly;
31-a third line;
32-a second valve;
33-gas collection row;
34-a second pressure gauge;
4-a vacuum-pumping assembly;
41-fourth line;
42-a third valve;
43-vacuum gauge;
44-a vacuum pump;
5-a drive assembly;
51-an output terminal;
6-a control component;
61-pressure display screen;
62-volumetric display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
Fig. 1 is a schematic structural diagram of a standard gas dispensing device according to an embodiment of the present invention. As shown in fig. 1, the split charging device comprises a mother bottle 1, a buffer 2, a gas distribution assembly 3 and a vacuum pumping assembly 4, wherein:
the master bottle 1 contains standard gas, and the master bottle 1 is provided with a first valve 11;
a piston 21 capable of moving up and down is arranged in the buffer 2, a closed cavity 20 used for containing standard gas is enclosed by the piston 21 and the buffer 2, a first pipeline 12 communicated with the closed cavity 20 is connected between the buffer 2 and the first valve 11, the buffer 2 is connected with a first pressure gauge 23 through a second pipeline 22, and the second pipeline 22 is communicated with the closed cavity 20;
the gas distribution assembly 3 comprises a third pipeline 31 and a second valve 32 arranged on the third pipeline 31, and the third pipeline 31 is respectively communicated with the closed cavity 20 and a gas cylinder to be split (not shown in the figure);
the vacuumizing assembly 4 is used for vacuumizing the closed cavity 20, the first pipeline 12, the second pipeline 22, the third pipeline 31 and the gas cylinder to be subpackaged before inflating the gas cylinder to be subpackaged;
closing the first valve 11 and opening the second valve 32, and performing vacuum pumping by using the vacuum pumping assembly 4;
after the vacuumizing is finished, the second valve 32 is closed and the first valve 11 is opened, the standard gas in the mother bottle 1 enters the closed cavity 20 and the third pipeline 31, and the first valve 11 is closed after the reading of the first pressure gauge 23 is stable;
after the first valve 11 is closed, the piston 21 is controlled to move downwards, and when the reading of the first pressure gauge 23 reaches a preset pressure, the second valve 32 is opened to charge the standard gas in the sealed cavity 20 and the third pipeline 31 into the gas cylinder to be split; wherein the piston 21 is continuously controlled to move downwards during the charging process so as to maintain the indication of the first pressure gauge 23 at the preset pressure.
In this embodiment, the first valve 11 is closed and the second valve 32 is opened, so that the vacuum pumping assembly 4 is used for vacuum pumping, thereby removing the impurity gas in the split charging device; after the vacuumizing is finished, the second valve 32 is closed and the first valve 11 is opened, the standard gas in the mother bottle 1 enters the closed cavity 20 and the third pipeline 31, and the first valve 11 is closed after the indication of the first pressure gauge 23 is stabilized, so that the standard gas in the mother bottle 1 can be fully and uniformly mixed before being filled into the gas cylinder to be split by the buffer 2; after closing first valve 11, control piston 21 moves down, when the registration of first manometer 23 reached preset pressure, open second valve 32 to fill the standard gas in airtight cavity 20 and third pipeline 31 into the gas cylinder of waiting to adorn, continuous control piston 21 moves down at the in-process of aerifing, so that the registration of first manometer 23 maintains at preset pressure, can guarantee like this that gas fills the in-process gas and fills with the mode of constant pressure, thereby can fully guarantee the degree of consistency of standard gas, and then can effectively improve the degree of accuracy of standard gas partial shipment.
In addition, the mode of gas split charging by the booster pump is adopted, and the pressure of the booster pump is uncontrollable due to the reciprocating motion of the booster pump. When the volume of waiting to divide the partial shipment gas cylinder is less, the pressure of waiting to divide the partial shipment gas cylinder risees at the excessive speed and uncontrollable, and this has just reduced the factor of safety of gaseous partial shipment in-process, so is unfavorable for staff's safety. However, the constant-pressure filling mode in the above embodiment can ensure the uniformity of the standard gas mixture and control the pressure rise rate of the gas cylinder to be dispensed, thereby improving the safety factor in the gas dispensing process.
In an embodiment of the present invention, the apparatus further includes a driving assembly 5 and a control assembly 6, an output end 51 of the driving assembly 5 is connected to the piston 21, the control assembly 6 is electrically connected to the driving assembly 5, and the control assembly 6 is configured to control the driving assembly 5 to move, so that the driving assembly 5 drives the piston 21 to move up and down.
In this embodiment, through setting up drive assembly 5 and control assembly 6, can make partial shipment of partial shipment device more convenient and intelligent.
In some embodiments, the driving assembly 5 may be driven by any one of an electric drive, a hydraulic drive and a pneumatic drive, and the specific driving manner of the driving assembly 5 is not limited herein. Wherein the output end 51 is a push rod.
In one embodiment of the present invention, the output end 51 is provided with a displacement sensor (not shown in the figure), and the control component 6 is electrically connected with the displacement sensor and the first pressure gauge 23 respectively;
the control assembly 6 is configured to perform the following operations: receiving displacement data detected by the displacement sensor and pressure data detected by the first pressure gauge 23; determining a current volume of the enclosed cavity 20 based on the displacement data; controlling the action of the output end 51 based on the inflation state, the pressure data and the current volume of the gas cylinder to be subpackaged; wherein the inflation state comprises being inflated and not inflated;
when the gas cylinder to be dispensed is not charged, when the pressure corresponding to the pressure data does not rise to a preset pressure (for example, 12MPa) and the current volume does not fall to a preset volume, the control component 6 controls the output end 51 to move downwards so as to move the piston 21 downwards;
when the gas charging state of the gas cylinder to be subjected to gas charging is non-charging, when the pressure corresponding to the pressure data is increased to the preset pressure and the current volume is not reduced to the preset volume, the second valve 32 is opened, the gas charging state of the gas cylinder to be subjected to gas charging is changed into charging, and the control assembly 6 controls the pressure corresponding to the pressure data to be unchanged and the output end 51 to move downwards;
when the current volume decreases to the preset volume, the control unit 6 controls the output 51 to stop.
In this embodiment, through the preset internal control logic of the control component 6, the output end 51 can be reasonably controlled based on the displacement data detected by the displacement sensor and the pressure data detected by the first pressure gauge 23, so that the air pressure in the sealed cavity 20 reaches the preset pressure; moreover, the piston 21 is continuously controlled to move downwards during the inflation process, so that the indication of the first pressure gauge 23 is maintained at the preset pressure, thereby being beneficial to ensuring that the gas is subpackaged in a constant pressure mode. Moreover, when the current volume decreases to the preset volume, this indicates that the gas in the sealed cavity 20 is not enough to complete the dispensing of all the gas cylinders to be dispensed, and therefore the control assembly 6 is required to control the output end 51 to stop.
In one embodiment of the present invention, the control assembly 6 includes a pressure display screen 61 and a volume display screen 62, the pressure display screen 61 is used for displaying the pressure corresponding to the pressure data, and the volume display screen 62 is used for displaying the current volume;
when the pressure displayed by the pressure display screen 61 does not rise to the preset pressure and the volume displayed by the volume display screen 62 falls to the preset volume, the standard gas in the mother bottle 1 is in an unfilled state.
In this embodiment, through setting up pressure display screen 61 and volume display screen 62, be favorable to the auxiliary staff to carry out the control to the gaseous state in mother's bottle 1, if the pressure that pressure display screen 61 shows does not rise to preset pressure and the volume that volume display screen 62 shows drops to preset volume, this shows that the gas in mother's bottle 1 has been insufficient to accomplish the partial shipment to all gas cylinders that await partial shipment (i.e. the standard gas in mother's bottle 1 is in the non-chargeable state), and this is that the staff needs to change new mother's bottle 1.
In an embodiment of the present invention, the inner wall of the buffer 2 is provided with a limiting structure 24, the volume of the closed cavity 20 below the horizontal plane where the limiting structure 24 is located is smaller than a preset volume, and the position where the first pipeline 12 is connected to the buffer 2, the position where the second pipeline 22 is connected to the buffer 2, and the position where the third pipeline 31 is connected to the buffer 2 are all located below the limiting structure 24.
In the embodiment, the limit structure 24 is arranged on the inner wall of the buffer 2, so that the piston 21 can be prevented from continuously moving downwards after reaching the position corresponding to the preset volume, which is possibly caused by program error of the control assembly 6; if the piston 21 continues to move downwardly, it may damage some of the line connections or valves provided at the bottom of the buffer 2 (e.g. the pressure relief valve 25 below).
In one embodiment of the present invention, a pressure relief valve 25 is further disposed in the buffer 2, and a position where the pressure relief valve 25 is connected to the buffer 2 is located below the limiting structure 24.
In this embodiment, the pressure relief valve 25 is provided to prevent the air pressure in the sealed cavity 20 from exceeding a preset pressure, so as to facilitate controlling the air pressure in the sealed cavity 20 and ensure certain personal safety.
In one embodiment of the present invention, the vacuum pumping assembly 4 comprises a fourth pipe 41, and a third valve 42, a vacuum gauge 43 and a vacuum pump 44 which are arranged on the fourth pipe 41, wherein the fourth pipe 41 is communicated with the sealed cavity 20, and the third valve 42 and the vacuum gauge 43 are arranged between the vacuum pump 44 and the buffer 2.
In this embodiment, the vacuum pumping of the dispensing device can be more conveniently achieved by providing the third valve 42, the vacuum gauge 43 and the vacuum pump 44.
In one embodiment of the present invention, there are two second valves 32, two third valves 42, two vacuum meters 43, and the fourth pipeline 41 is further communicated with the third pipeline 31;
one end of the fourth pipe 41 connected to the third pipe 31 is disposed between the two second valves 32, one third valve 42 and one vacuum gauge 43 are disposed between the vacuum pump 44 and one end of the fourth pipe 41 connected to the third pipe 31, and the other third valve 42 and the other vacuum gauge 43 are disposed between the vacuum pump 44 and the buffer 2.
In the present embodiment, by the above arrangement, the seal detection can be performed in the left and right portions of the vacuum pump 44 in fig. 1. For example, after the gas cylinder to be dispensed is connected to the third pipeline 31, the first valve 11 is closed and all other valves are opened, so that the whole dispensing device (including the sealed cavity 20, the first pipeline 12, the second pipeline 22, the third pipeline 31, the fourth pipeline 41 and the gas cylinder to be dispensed) is vacuumized by using the vacuum pump 44, and if the indication of the vacuum meter can reach a preset vacuum degree, the sealing performance of the whole dispensing device is proved to be good; otherwise, the sealing performance of the whole subpackaging device is proved to be poor. In order to be able to detect the sealing in the left-hand part and the right-hand part of the vacuum pump 44 in fig. 1, respectively, a second valve 32 and a third valve 42 are closed and a further second valve 32 and a further third valve 42 are opened. With this arrangement, it is possible to more accurately specify which region of the dispensing device has a problem of poor sealing performance.
In an embodiment of the present invention, a gas converging row 33 including multiple branches is disposed at one end of the third pipeline 31 and the gas cylinder to be dispensed, and each branch of the gas converging row 33 is connected to one gas cylinder to be dispensed.
In this embodiment, can carry out gaseous partial shipment to the waiting partial shipment gas cylinder that a plurality of volumes are the same through setting up the row of gathering the gas 33, the pipe diameter of each branch road is the same promptly.
In one embodiment of the present invention, a second pressure gauge 34 is further connected to the third pipeline 31 between the gas cylinder to be dispensed and the second valve 32 closest to the gas cylinder to be dispensed, and the second pressure gauge 34 is used for measuring the pressure of the gas cylinder to be dispensed after the second valve 32 is closed.
In this embodiment, the pressure of the gas cylinder to be dispensed after the second valve 32 is closed can be measured by providing the second pressure gauge 34, and generally speaking, after the first gas filling is completed and the pressure is stabilized, the reading of the second pressure gauge 34 is decreased a little, so that the preset pressure is usually slightly greater than the pressure required by the gas cylinder to be dispensed or the gas is filled for a few times.
Fig. 2 is a schematic flow chart of a standard gas dispensing method according to an embodiment of the present invention. As shown in fig. 2, the sub-packaging method is applied to the sub-packaging device for standard gas provided in any one of the above embodiments, and may specifically include:
s1, vacuumizing: closing the first valve 11 and opening the second valve 32, and performing vacuum pumping by using the vacuum pumping assembly 4;
s2, gas mixing step: after the vacuumizing step is finished, closing the second valve 32 and opening the first valve 11, allowing the standard gas in the mother bottle 1 to enter the closed cavity 20 and the third pipeline 31, and closing the first valve 11 after the reading of the first pressure gauge 23 is stable;
s3, gas filling step: after the gas mixing step is finished, the piston 21 is controlled to move downwards, and when the reading of the first pressure gauge 23 reaches the preset pressure, the second valve 32 is opened to fill the standard gas in the closed cavity 20 and the third pipeline 31 into the gas cylinder to be split; wherein the piston 21 is continuously controlled to move downwards during the charging process so that the indication of the first pressure gauge 23 is maintained at a preset pressure.
It should be noted that, since the dispensing method and the dispensing apparatus belong to the same inventive concept, the two have the same beneficial effects, and the beneficial effects of the dispensing method are not described herein again.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other similar elements in the process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A standard gas split charging device is characterized by comprising:
the gas generating device comprises a mother bottle (1), a gas generating device and a gas generating device, wherein standard gas is contained in the mother bottle (1), and the mother bottle (1) is provided with a first valve (11);
the buffer (2) is internally provided with a piston (21) capable of moving up and down, the piston (21) and the buffer (2) enclose a closed cavity (20) for containing the standard gas, a first pipeline (12) communicated with the closed cavity (20) is connected between the buffer (2) and the first valve (11), the buffer (2) is connected with a first pressure gauge (23) through a second pipeline (22), and the second pipeline (22) is communicated with the closed cavity (20);
the gas distribution assembly (3) comprises a third pipeline (31) and a second valve (32) arranged on the third pipeline (31), and the third pipeline (31) is respectively communicated with the closed cavity (20) and a gas cylinder to be split-packed;
the vacuumizing assembly (4) is used for vacuumizing the closed cavity (20), the first pipeline (12), the second pipeline (22), the third pipeline (31) and the gas cylinder to be subpackaged before the gas cylinder to be subpackaged is inflated;
closing the first valve (11) and opening the second valve (32) to perform vacuum pumping by using the vacuum pumping assembly (4);
after the vacuumizing is finished, closing the second valve (32) and opening the first valve (11), enabling the standard gas in the mother bottle (1) to enter the closed cavity (20) and the third pipeline (31), and closing the first valve (11) after the indication of the first pressure gauge (23) is stable;
after the first valve (11) is closed, the piston (21) is controlled to move downwards, and when the reading of the first pressure gauge (23) reaches a preset pressure, the second valve (32) is opened to charge the standard gas in the closed cavity (20) and the third pipeline (31) into the gas cylinder to be subpackaged; wherein the piston (21) is continuously controlled to move downwards during the inflation process, so that the indication of the first pressure gauge (23) is maintained at the preset pressure.
2. The standard gas split charging device according to claim 1, further comprising the driving assembly (5) and a control assembly (6), wherein the output end (51) of the driving assembly (5) is connected with the piston (21), the control assembly (6) is electrically connected with the driving assembly (5), and the control assembly (6) is used for controlling the driving assembly (5) to move so that the driving assembly (5) drives the piston (21) to move up and down.
3. The standard gas dispensing device according to claim 2, wherein the output end (51) is provided with a displacement sensor, and the control assembly (6) is electrically connected with the displacement sensor and the first pressure gauge (23), respectively;
the control assembly (6) is used for executing the following operations: -receiving displacement data detected by the displacement sensor and pressure data detected by the first pressure gauge (23); determining a current volume of the enclosed cavity (20) based on the displacement data; controlling the action of the output end (51) based on the inflation state of the gas cylinder to be subpackaged, the pressure data and the current volume; wherein the inflation status comprises being inflated and not inflated;
when the gas cylinder to be subpackaged is not charged, when the pressure corresponding to the pressure data does not rise to the preset pressure and the current volume does not fall to the preset volume, the control assembly (6) controls the output end (51) to move downwards so as to enable the piston (21) to move downwards;
when the inflation state of the gas cylinder to be subpackaged is not inflated, when the pressure corresponding to the pressure data is increased to a preset pressure and the current volume is not reduced to a preset volume, the second valve (32) is opened, the inflation state of the gas cylinder to be subpackaged is changed into inflation, and the control assembly (6) controls the pressure corresponding to the pressure data to be unchanged and the output end (51) to move downwards;
when the current volume is reduced to a preset volume, the control component (6) controls the output end (51) to stop acting.
4. The standard gas split charging device according to claim 3, wherein the control assembly (6) comprises a pressure display screen (61) and a volume display screen (62), the pressure display screen (61) is used for displaying the pressure corresponding to the pressure data, and the volume display screen (62) is used for displaying the current volume;
when the pressure displayed by the pressure display screen (61) does not rise to the preset pressure and the volume displayed by the volume display screen (62) drops to the preset volume, the standard gas in the mother bottle (1) is in an unfilled state.
5. The standard gas split charging device according to claim 3, wherein a limiting structure (24) is arranged on the inner wall of the buffer (2), the volume of the closed cavity (20) below the horizontal plane where the limiting structure (24) is located is smaller than the preset volume, and the position where the first pipeline (12) is connected with the buffer (2), the position where the second pipeline (22) is connected with the buffer (2), and the position where the third pipeline (31) is connected with the buffer (2) are all located below the limiting structure (24).
6. The standard gas split charging device according to claim 5, wherein a pressure relief valve (25) is further arranged in the buffer (2), and the position where the pressure relief valve (25) is connected with the buffer (2) is located below the limiting structure (24).
7. The standard gas split charging device according to any one of claims 1 to 6, wherein the vacuum pumping assembly (4) comprises a fourth pipeline (41), and a third valve (42), a vacuum gauge (43) and a vacuum pump (44) which are arranged on the fourth pipeline (41), the fourth pipeline (41) is communicated with the closed cavity (20), and the third valve (42) and the vacuum gauge (43) are arranged between the vacuum pump (44) and the buffer (2).
8. The standard gas dispensing apparatus according to claim 7, wherein the second valve (32) is two, the third valve (42) is two, the vacuum gauge (43) is two, and the fourth line (41) is further communicated with the third line (31);
one end of the fourth pipeline (41) connected with the third pipeline (31) is arranged between the two second valves (32), one third valve (42) and one vacuum gauge (43) are arranged between the vacuum pump (44) and one end of the fourth pipeline (41) connected with the third pipeline (31), and the other third valve (42) and the other vacuum gauge (43) are arranged between the vacuum pump (44) and the buffer (2).
9. The standard gas split charging device according to any one of claims 1 to 8, wherein a gas gathering row (33) comprising a plurality of branches is arranged at one end of the third pipeline (31) and one end of the gas cylinder to be split charged, and each branch of the gas gathering row (33) is connected with one gas cylinder to be split charged;
and/or the presence of a gas in the gas,
and the third pipeline (31) between the gas cylinder to be subpackaged and the second valve (32) closest to the gas cylinder to be subpackaged is also connected with a second pressure gauge (34), and the second pressure gauge (34) is used for measuring the pressure of the gas cylinder to be subpackaged after the second valve (32) is closed.
10. A method for dispensing a standard gas, which is applied to the standard gas dispensing apparatus according to any one of claims 1 to 9, the method comprising:
and (3) vacuumizing: closing the first valve (11) and opening the second valve (32) to perform vacuum pumping by using the vacuum pumping assembly (4);
gas mixing step: after the vacuumizing step is finished, closing the second valve (32) and opening the first valve (11), enabling the standard gas in the mother bottle (1) to enter the closed cavity (20) and the third pipeline (31), and closing the first valve (11) after the indication of the first pressure gauge (23) is stable;
gas filling: after the gas blending step is finished, controlling the piston (21) to move downwards, and opening the second valve (32) when the reading of the first pressure gauge (23) reaches a preset pressure so as to fill the standard gas in the closed cavity (20) and the third pipeline (31) into the gas cylinder to be split-packed; wherein the piston (21) is continuously controlled to move downwards during the process of inflation, so that the indication number of the first pressure gauge (23) is maintained at the preset pressure.
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| CN202210757389.9A CN115127017A (en) | 2022-06-30 | 2022-06-30 | Standard gas split charging device and method |
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| CN202210757389.9A CN115127017A (en) | 2022-06-30 | 2022-06-30 | Standard gas split charging device and method |
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