CN108196505B - Normal-temperature gaseous working medium quantitative filling system and filling method thereof - Google Patents
Normal-temperature gaseous working medium quantitative filling system and filling method thereof Download PDFInfo
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- CN108196505B CN108196505B CN201810024046.5A CN201810024046A CN108196505B CN 108196505 B CN108196505 B CN 108196505B CN 201810024046 A CN201810024046 A CN 201810024046A CN 108196505 B CN108196505 B CN 108196505B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a normal temperature gaseous working medium quantitative filling system, which comprises: a standard container; the gas outlet of the gas cylinder is connected with the high-purity gas inlet of the standard container through a decompression electromagnetic valve and a first stop electromagnetic valve in sequence; the vacuum pump is connected with the working medium filling outlet of the standard container through a second stop electromagnetic valve and a third stop electromagnetic valve in sequence; the molecular pump is connected in parallel on a pipeline between the second stop electromagnetic valve and the third stop electromagnetic valve through a fourth stop electromagnetic valve; the first port of the three-way reversing electromagnetic valve is connected with the working medium filling outlet of the standard container through a fifth stop electromagnetic valve, the second port of the three-way reversing electromagnetic valve is connected in parallel on a pipeline between the second stop electromagnetic valve and the third stop electromagnetic valve, and the third port of the three-way reversing electromagnetic valve is connected with a filling inlet of a workpiece to be filled with working medium. Its filling method is also disclosed. The invention effectively realizes quantitative gaseous filling of the low-boiling point working medium and high-purity filling of the working medium.
Description
Technical Field
The invention relates to the technical field of working medium filling equipment, in particular to a normal-temperature gaseous working medium quantitative filling system and a filling method thereof, which are suitable for filling high-purity gaseous working medium into heat transfer products, pipe bodies and equipment.
Background
At present, most two-phase heat transfer products need to be filled with working media, and the heat transfer characteristics of the products, such as heat pipes, loop heat pipes, VC and the like, are improved by utilizing the phase change of the working media. The existing working media of the two-phase heat transfer product mainly comprise water, acetone, freon and the like, and most of the working media are metered by a flowmeter and a weighing mode, but the working media with low boiling points such as ammonia, methane, ethane, propane, freon and the like are gaseous at normal temperature and normal pressure, and the working media can be metered by the volume of liquid unless the working media are guaranteed to be liquid under high pressure. Therefore, the applicant has conducted beneficial research and study, and invented a normal temperature gaseous working medium quantitative filling system to realize quantitative gaseous filling of low boiling point working medium and high purity filling of working medium, and the technical scheme to be described below is generated under the background.
Disclosure of Invention
One of the technical problems to be solved by the invention is as follows: aiming at the defects of the prior art, the normal-temperature gaseous working medium quantitative filling system for realizing quantitative gaseous filling of low-boiling-point working medium and high-purity filling of working medium has simple and reliable filling process, low equipment requirement, improved production efficiency and convenient control.
The second technical problem to be solved by the invention is: the filling method of the normal-temperature gaseous working medium quantitative filling system is provided.
As a first aspect of the present invention, a normal temperature gaseous working medium quantitative charging system includes:
the standard container is provided with a working medium filling inlet, a temperature detection port, a pressure detection port, a high-purity gas inlet and a working medium filling outlet, and the working medium filling inlet of the standard container is connected with working medium filling equipment;
a temperature sensor disposed on the temperature detection port of the standard container;
a pressure sensor disposed on the pressure sensing port of the standard container;
a filling flowmeter arranged on the working medium filling inlet of the standard container;
the gas outlet of the gas cylinder is connected with the high-purity gas inlet of the standard container through a decompression electromagnetic valve and a first stop electromagnetic valve in sequence;
the vacuumizing inlet of the vacuum pump is connected with the working medium filling outlet of the standard container through a second stop electromagnetic valve and a third stop electromagnetic valve in sequence;
the vacuumizing inlet of the molecular pump is connected in parallel with a pipeline between the second stop electromagnetic valve and the third stop electromagnetic valve through a fourth stop electromagnetic valve;
the first port of the three-way reversing electromagnetic valve is connected with the working medium filling outlet of the standard container through a fifth stop electromagnetic valve, the second port of the three-way reversing electromagnetic valve is connected in parallel on a pipeline between the second stop electromagnetic valve and a third stop electromagnetic valve, and the third port of the three-way reversing electromagnetic valve is connected with a filling inlet of a workpiece to be filled with working medium;
a gas flowmeter installed on the pipeline between the three-way reversing electromagnetic valve and the fifth cut-off electromagnetic valve; and
and the PLC is respectively connected with the standard container, the temperature sensor, the pressure sensor, the filling flowmeter, the vacuum pump, the molecular pump, the gas flowmeter, the decompression electromagnetic valve, the first, the second, the third, the fourth and the fifth cut-off electromagnetic valves and the three-way reversing electromagnetic valve.
The filling method of the normal-temperature gaseous working medium quantitative filling system as the second aspect of the invention comprises the following steps:
step S1, a PLC controller controls a vacuum pump to work and controls a second cut-off electromagnetic valve and a third cut-off electromagnetic valve to open, the vacuum pump vacuumizes a standard container, when the vacuum degree in the standard container is below 10pa, a fourth cut-off electromagnetic valve is controlled to open and controls a molecular pump to work, and when the vacuum degree in the standard container is up to 10pa -2 When pa is less than pa, the vacuum pump and the molecular pump are controlled to stop working, and the second stop electromagnetic valve, the third stop electromagnetic valve and the fourth stop electromagnetic valve are controlled to be closed;
s2, controlling the decompression electromagnetic valve and the first stop electromagnetic valve to be opened, and simultaneously opening a valve on a gas cylinder filled with high-purity gas, and introducing the high-purity gas in the gas cylinder into a standard container;
step S3, when the pressure sensor detects that the air pressure in the standard container reaches a set air pressure value, the PLC controls the first cut-off electromagnetic valve to be closed, controls the fifth cut-off electromagnetic valve and the three-way reversing electromagnetic valve to be opened on the other hand, at the moment, a first port and a third port in the three-way reversing electromagnetic valve are opened and communicated, and a second port is closed, so that the air in the standard container is discharged;
s4, repeating the steps S1 to S3 until the air in the standard container is exhausted completely, and then filling working medium into the standard container;
s5, placing a workpiece to be filled with working media on a filling platform, and tightly connecting a filling inlet of the workpiece to be filled with working media with a third port of the three-way reversing electromagnetic valve;
step S6, the PLC controls the three-way reversing electromagnetic valve to switch on one hand, so that the second port and the third port of the three-way reversing electromagnetic valve are opened and communicated, and on the other hand, controls the second cut-off electromagnetic valve to open and control the vacuum pump to work, and controls the fourth cut-off electromagnetic valve to open and control the molecular pump to work when the vacuum degree in a work piece to be filled with working medium reaches a molecular pump opening condition;
step S7, when the vacuum degree in the work piece to be filled with the working medium is below 1pa, the PLC controls the second stop electromagnetic valve and the fourth stop electromagnetic valve to be closed and controls the vacuum pump and the molecular pump to stop working, and controls the fifth stop valve to be opened and controls the three-way reversing electromagnetic valve to be switched, so that the first port and the third port of the three-way reversing electromagnetic valve are opened and communicated, the working medium in the standard container is filled into the work piece to be filled with the working medium, and the work piece to be filled with the working medium is refrigerated in the filling process, so that the internal pressure of the work piece to be filled with the working medium is always lower than the internal pressure of the standard container;
and S8, the gas flowmeter measures working medium filled into the workpiece, and when the working medium filled into the workpiece reaches a set filling amount, the PLC controls the fifth cut-off electromagnetic valve to be closed, so that the filling of the workpiece is completed.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention effectively realizes quantitative gaseous filling of low boiling point working medium and high purity filling of working medium, and the filling process is simple and reliable, has low equipment requirement, improves production efficiency and is convenient to control.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Referring to fig. 1, a normal temperature gaseous working medium quantitative filling system is shown, which comprises a standard container 100 with heating and refrigerating functions, a temperature sensor 210, a pressure sensor 220, a filling flowmeter 230, a gas cylinder 300, a vacuum pump 400, a molecular pump 500, a three-way reversing electromagnetic valve 600, a gas flowmeter 700 and a PLC controller (not shown).
The temperature sensor 210 is installed on the temperature detection port 120 of the standard container 100, and is used to detect the temperature value in the standard container 100 in real time. The pressure sensor 220 is installed on the pressure detection port 130 of the standard container 100 for detecting the pressure value in the standard container 100 in real time. A filling flow meter 230 is mounted on the pressure sensing port 130 of the standard container 100 for sensing the amount of working substance filled into the standard container 100 by the working substance filling device.
The gas cylinder 300 is filled with high purity gas, and the gas outlet of the gas cylinder 300 is connected to the high purity gas inlet 140 of the standard container 100 through the pressure reducing solenoid valve 810 and the shut-off solenoid valve 820 in sequence.
The vacuum suction inlet of the vacuum pump 400 is connected with the working medium filling outlet 150 of the standard container 100 sequentially through the cut-off solenoid valves 830 and 840.
The vacuum inlet of molecular pump 500 is connected in parallel to the tubing between shut-off solenoid valves 830, 840 through shut-off solenoid valve 850.
The first port 610 of the three-way reversing solenoid valve 600 is connected to the working medium filling outlet 150 of the standard container 100 through the shut-off solenoid valve 860, the second port 620 thereof is connected in parallel to the pipeline between the shut-off solenoid valves 830, 840, and the third port 630 thereof is connected to the filling inlet of the work piece 10 to be filled with working medium.
The gas flow meter 700 is installed on a pipeline between the three-way reversing solenoid valve 600 and the shut-off solenoid valve 860.
The PLC controller is connected to the standard container 100, the temperature sensor 210, the pressure sensor 220, the filling flow meter 230, the vacuum pump 400, the molecular pump 500, the gas flow meter 700, the depressurization solenoid valve 810, the shut- off solenoid valves 820, 830, 840, 850, 860, and the three-way reversing solenoid valve 600, respectively.
The filling method of the normal-temperature gaseous working medium quantitative filling system comprises the following steps:
step S1, the PLC controls the vacuum pump 400 to work, controls the cut-off solenoid valves 830 and 840 to open, the vacuum pump 400 vacuumizes the standard container 100, controls the cut-off solenoid valve 850 to open when the vacuum degree in the standard container 100 is below 10pa, and controls the molecular pump 500 to work, when the vacuum degree in the standard container 100 is 10pa -2 When pa is less, the vacuum pump 400 and the molecular pump 500 are controlled to stop working, and the cut-off solenoid valves 830, 840, 850 are controlled to be closed;
step S2, the PLC controls the opening of the pressure reducing solenoid valve 810 and the closing solenoid valve 820, and simultaneously opens the valve on the gas cylinder 300 filled with high-purity gas, and the high-purity gas in the gas cylinder 300 is introduced into the standard container 100;
step S3, when the pressure sensor 220 detects that the air pressure in the standard container 100 reaches the set air pressure value, the PLC controls the cut-off electromagnetic valve 820 to be closed on one hand, controls the cut-off electromagnetic valve 860 and the three-way reversing electromagnetic valve 600 to be opened on the other hand, at the moment, the first port 610 and the third port 630 in the three-way reversing electromagnetic valve 600 are opened and communicated, and the second port 620 is closed, so that the air in the standard container 100 is discharged;
step S4, repeating the steps S1 to S3 until the air in the standard container 100 is exhausted completely, filling working medium into the standard container 100, ensuring the pure high-pressure gas state in the standard container 100, and simultaneously detecting the temperature and pressure values in the standard container 100 in real time by the temperature sensor 210 and the pressure sensor 220;
step S5, placing the work piece 10 to be filled with the working medium on a filling platform, and tightly connecting a filling inlet of the work piece 10 to be filled with the working medium with a third port 630 of the three-way reversing electromagnetic valve 600 to prevent leakage under positive and negative pressure;
step S6, the PLC controls the three-way reversing electromagnetic valve 600 to switch on one hand, so that the second port 620 and the third port 630 of the three-way reversing electromagnetic valve 600 are opened and communicated, the first port 610 of the three-way reversing electromagnetic valve 600 is closed, and on the other hand, controls the cut-off electromagnetic valve 830 to be opened and controls the vacuum pump 400 to work, and when the vacuum degree in a work piece to be filled with working medium reaches a molecular pump opening condition, the PLC controls the cut-off electromagnetic valve 850 to be opened and controls the molecular pump 500 to work;
step S7, when the vacuum degree in the work piece 10 to be filled with the working medium is below 1pa, the PLC controls the cut-off solenoid valves 830 and 850 to be closed and controls the vacuum pump 400 and the molecular pump 500 to stop working, and controls the cut-off solenoid valve 860 and the three-way reversing solenoid valve 600 to be switched on so that the first port 610 and the third port 630 of the three-way reversing solenoid valve 600 are opened and communicated, and the second port 620 of the three-way reversing solenoid valve 600 is closed, the working medium in the standard container 100 is filled into the work piece 10 to be filled with the working medium, and the work piece 10 to be filled with the working medium is refrigerated in the filling process, so that the internal pressure of the work piece 10 to be filled with the working medium is always lower than the internal pressure of the standard container 100;
in step S8, the gas flowmeter 700 measures the working medium filled into the workpiece 10, and when the working medium filled into the workpiece 10 reaches the set filling amount, the PLC controller controls the stop solenoid valve 860 to close, thereby completing the filling of the workpiece 10.
In step S8, the temperature of the standard container 100 is set, the temperature of the standard container 100 is controlled, the pressure and temperature of the gas inside the standard container 100 are measured, the temperature and pressure parameters of the working medium are set in the program of the PLC controller, the filling amount is set, the volume of the standard container is known, the relation between the filling amount and the pressure is calculated by the system according to the ideal gas state equation, and after the working medium filled into the workpiece 10 reaches the set filling amount, the PLC controller controls the cut-off solenoid valve 860 to close, thereby completing the filling.
The filling amount calculating method is to calculate the volume of liquid and the volume of gas in the working state, and multiply the volume of liquid and the volume of gas by the corresponding densities respectively to obtain the filling amount m.
For example, the filling amount m of the heat pipe in the working state is calculated by the filling amount calculating method described above;
P 2 V 2 ＝m 2 R 2 T 2
P 3 V 2 ＝m 3 R 2 T 2
m＝m 3 -m 2 ＝(P 2 V 2 -P 3 V 2 )/R 2 T 2
wherein, the temperature of the standard container 100 is required to be controlled to be constant, the constant volume and the constant temperature are ensured to be filled, and the filling precision is ensured.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a normal atmospheric temperature gaseous state working medium ration filling system which characterized in that includes:
the standard container is provided with a working medium filling inlet, a temperature detection port, a pressure detection port, a high-purity gas inlet and a working medium filling outlet, and the working medium filling inlet of the standard container is connected with working medium filling equipment;
a temperature sensor disposed on the temperature detection port of the standard container;
a pressure sensor disposed on the pressure sensing port of the standard container;
a filling flowmeter arranged on the working medium filling inlet of the standard container;
the gas outlet of the gas cylinder is connected with the high-purity gas inlet of the standard container through a decompression electromagnetic valve and a first stop electromagnetic valve in sequence;
the vacuumizing inlet of the vacuum pump is connected with the working medium filling outlet of the standard container through a second stop electromagnetic valve and a third stop electromagnetic valve in sequence;
the vacuumizing inlet of the molecular pump is connected in parallel with a pipeline between the second stop electromagnetic valve and the third stop electromagnetic valve through a fourth stop electromagnetic valve;
the first port of the three-way reversing electromagnetic valve is connected with the working medium filling outlet of the standard container through a fifth stop electromagnetic valve, the second port of the three-way reversing electromagnetic valve is connected in parallel on a pipeline between the second stop electromagnetic valve and a third stop electromagnetic valve, and the third port of the three-way reversing electromagnetic valve is connected with a filling inlet of a workpiece to be filled with working medium;
a gas flowmeter installed on the pipeline between the three-way reversing electromagnetic valve and the fifth cut-off electromagnetic valve; and
and the PLC is respectively connected with the standard container, the temperature sensor, the pressure sensor, the filling flowmeter, the vacuum pump, the molecular pump, the gas flowmeter, the decompression electromagnetic valve, the first, the second, the third, the fourth and the fifth cut-off electromagnetic valves and the three-way reversing electromagnetic valve.
2. A filling method of a normal temperature gaseous working medium quantitative filling system according to claim 1, comprising the steps of:
step S1, a PLC controller controls a vacuum pump to work and controls a second cut-off electromagnetic valve and a third cut-off electromagnetic valve to open, the vacuum pump vacuumizes a standard container, when the vacuum degree in the standard container is below 10pa, a fourth cut-off electromagnetic valve is controlled to open and controls a molecular pump to work, and when the vacuum degree in the standard container is up to 10pa -2 pa or less, controlThe vacuum pump and the molecular pump stop working, and the second stop electromagnetic valve, the third stop electromagnetic valve and the fourth stop electromagnetic valve are controlled to be closed;
s2, controlling the decompression electromagnetic valve and the first stop electromagnetic valve to be opened, and simultaneously opening a valve on a gas cylinder filled with high-purity gas, and introducing the high-purity gas in the gas cylinder into a standard container;
step S3, when the pressure sensor detects that the air pressure in the standard container reaches a set air pressure value, the PLC controls the first cut-off electromagnetic valve to be closed, controls the fifth cut-off electromagnetic valve and the three-way reversing electromagnetic valve to be opened on the other hand, at the moment, a first port and a third port in the three-way reversing electromagnetic valve are opened and communicated, and a second port is closed, so that the air in the standard container is discharged;
s4, repeating the steps S1 to S3 until the air in the standard container is exhausted completely, and then filling working medium into the standard container;
s5, placing a workpiece to be filled with working media on a filling platform, and tightly connecting a filling inlet of the workpiece to be filled with working media with a third port of the three-way reversing electromagnetic valve;
step S6, the PLC controls the three-way reversing electromagnetic valve to switch on one hand, so that the second port and the third port of the three-way reversing electromagnetic valve are opened and communicated, and on the other hand, controls the second cut-off electromagnetic valve to open and control the vacuum pump to work, and controls the fourth cut-off electromagnetic valve to open and control the molecular pump to work when the vacuum degree in a work piece to be filled with working medium reaches a molecular pump opening condition;
step S7, when the vacuum degree in the work piece to be filled with the working medium is below 1pa, the PLC controls the second stop electromagnetic valve and the fourth stop electromagnetic valve to be closed and controls the vacuum pump and the molecular pump to stop working, and controls the fifth stop valve to be opened and controls the three-way reversing electromagnetic valve to be switched, so that the first port and the third port of the three-way reversing electromagnetic valve are opened and communicated, the working medium in the standard container is filled into the work piece to be filled with the working medium, and the work piece to be filled with the working medium is refrigerated in the filling process, so that the internal pressure of the work piece to be filled with the working medium is always lower than the internal pressure of the standard container;
and S8, the gas flowmeter measures working medium filled into the workpiece, and when the working medium filled into the workpiece reaches a set filling amount, the PLC controls the fifth cut-off electromagnetic valve to be closed, so that the filling of the workpiece is completed.
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| CN206708722U (en) * | 2017-05-08 | 2017-12-05 | 河钢股份有限公司邯郸分公司 | A kind of high-purity gas is bottled system automatically |
| CN207817510U (en) * | 2018-01-10 | 2018-09-04 | 北京微焓科技有限公司 | A kind of room temperature gaseous working medium quantifies charging system |
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