CN114033965B - Filling control system for single-component or multi-component gas - Google Patents
Filling control system for single-component or multi-component gas Download PDFInfo
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- CN114033965B CN114033965B CN202111344370.3A CN202111344370A CN114033965B CN 114033965 B CN114033965 B CN 114033965B CN 202111344370 A CN202111344370 A CN 202111344370A CN 114033965 B CN114033965 B CN 114033965B
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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
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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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
- F17C13/045—Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
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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
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/045—Methods for emptying or filling by vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/046—Methods for emptying or filling by even emptying or filling
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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
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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
- F17C2250/0439—Temperature
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a filling control system of single-component or multi-component gas, which comprises a PLC control system and a pipeline system, wherein the pipeline system comprises a plurality of air inlet pipelines, a filling pipeline, a filling busbar pipeline, a main emptying pipeline and a high-pressure gas cylinder which are connected in parallel; the air inlet pipeline is provided with a first automatic valve and a second automatic valve, the pipeline between the first automatic valve and the second automatic valve is communicated with an emptying pipe communicated with the atmosphere, and the emptying pipe is provided with a third automatic valve; the PLC control system is electrically connected with the first automatic valve, the second automatic valve and the third automatic valve. When the air inlet pipeline is in a non-inflation state, the first automatic valve and the second automatic valve on the air inlet pipeline are controlled to be closed, the third automatic valve is controlled to be opened, if other air inlet pipelines are inflating, the first automatic valve and the second automatic valve leak, and gas can be discharged outwards through the third automatic valve after passing through the second automatic valve, so that the problems of gas cross-contamination and cross-contamination of various component gases can be avoided.
Description
Technical Field
The invention relates to the technical field of gas filling equipment, in particular to a filling control system for single-component or multi-component gas.
Background
The intelligent system for filling the single-component or multi-component high-purity gas cylinder is specially used for a mixed filling system of the single-component or multi-component high-pressure gas cylinder. When the high-pressure gas cylinder is filled, low-temperature liquefied gas is stored in the low-temperature storage tank, and low-temperature liquid gas in the low-temperature storage tank is pressurized by the low-temperature booster pump, vaporized into gas by the air-temperature vaporizer, and then is filled into the steel cylinder after being controlled by the busbar with the valve bank. The mixed gas filling is that after one component is filled to a certain pressure, the gas filling of the other component is switched to a certain pressure until the filling of each component is completed. Along with the development of science and technology, the requirements on the automation degree and the safety of a factory are higher and higher, and an intelligent system with high intelligent degree, safety and stability is urgently needed.
At present, in an intelligent system for filling a multi-component gas cylinder in the technical field of high-pressure gas filling, the risk of mutual gas leakage and cross contamination exists among multi-component gas pipelines, so that the filling requirement of high-purity gas cannot be met.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of mutual gas cross-contamination and cross-contamination of the component gases in the multi-component gas cylinder filling intelligent system in the prior art, thereby providing a single-component or multi-component gas filling control system.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a filling control system for single-component or multi-component gas comprises a PLC control system and a pipeline system, wherein the pipeline system comprises a plurality of air inlet pipelines, filling bus pipelines, main emptying pipelines and high-pressure gas cylinders which are connected in parallel; one end of the air inlet pipeline is provided with a medium inlet, one end of the filling pipeline is communicated with the air outlet ends of the air inlet pipelines, the other end of the filling pipeline is communicated to the filling bus pipe pipeline, the high-pressure gas cylinder is connected to the filling bus pipe pipeline, and the main emptying pipeline is communicated with the filling bus pipe pipeline; the air inlet pipeline is sequentially provided with a first automatic valve and a second automatic valve from an air inlet end to an air outlet end, a pipeline between the first automatic valve and the second automatic valve is communicated with an emptying pipe communicated with the atmosphere, and the emptying pipe is provided with a third automatic valve; the PLC control system is electrically connected with the first automatic valve, the second automatic valve and the third automatic valve, and when the air inlet pipeline is in an inflation state, the PLC control system controls the first automatic valve and the second automatic valve to be opened and the third automatic valve to be closed; when the air inlet pipeline is in a non-inflation state, the PLC control system controls the first automatic valve and the second automatic valve to be closed and controls the third automatic valve to be opened.
Furthermore, a first pressure transmitter is arranged on the charging manifold pipeline; the first pressure transmitter is electrically connected with the PLC control system and used for detecting pressure signals in the filling confluence pipeline and uploading the pressure signals to the PLC control system.
Furthermore, the filling pipeline comprises a filling valve pipeline and a buffer valve pipeline which are arranged in parallel, a filling valve electrically connected with the PLC control system is arranged on the filling valve pipeline, and a buffer valve electrically connected with the PLC control system is arranged on the buffer valve pipeline; the PLC control system is used for controlling the opening of the filling valve and the opening and closing of the buffer valve, and controlling the filling valve or the buffer valve to be closed when the pressure value detected by the first pressure transmitter reaches a first preset value.
Further, the filling pipeline comprises a filling valve pipeline, a filling valve electrically connected with the PLC control system is arranged on the filling valve pipeline, and the PLC control system is used for controlling the opening degree of the filling valve and controlling the filling valve to be closed when the pressure value detected by the first pressure transmitter reaches a first preset value.
Furthermore, the main evacuation pipeline comprises an evacuation pipeline and a vacuum-pumping pipeline, one end of the evacuation pipeline is communicated with the filling confluence pipeline, the other end of the evacuation pipeline is communicated with the atmosphere, one end of the vacuum-pumping pipeline is communicated with the filling confluence pipeline, and the other end of the vacuum-pumping pipeline is communicated with a vacuum-pumping device; the evacuation pipeline is provided with a bleeding automatic valve which is electrically connected with the PLC control system, and the vacuum pumping pipeline is provided with a fourth automatic valve and a fifth automatic valve which are electrically connected with the PLC control system; when the pressure value detected by the first pressure transmitter is smaller than a second preset value, the PLC control system controls the automatic bleeding valve to be closed, and the fourth automatic valve and the fifth automatic valve to be opened; and when the pressure value detected by the first pressure transmitter is smaller than the vacuum set value, the PLC control system controls the fourth automatic valve and the fifth automatic valve to be closed.
Furthermore, a second pressure transmitter is arranged on the air inlet pipeline; the second pressure transmitter is electrically connected with the PLC control system and used for detecting a pressure signal in the air inlet pipeline and transmitting the pressure signal to the PLC control system; when the pressure difference value between the pressure value detected by the second pressure transmitter and the pressure value detected by the first pressure transmitter is larger than a third preset value, the PLC control system firstly controls the third automatic valve to be closed and then controls the first automatic valve and the second automatic valve to be opened; and when the pressure difference value between the pressure value detected by the second pressure transmitter and the pressure value detected by the first pressure transmitter is smaller than a third preset value, the PLC control system controls the opening of the filling valve to increase.
Further, the high-pressure gas cylinder temperature monitoring system further comprises a first temperature transmitter electrically connected with the PLC control system, and the first temperature transmitter is used for detecting a temperature signal of the high-pressure gas cylinder and uploading the temperature signal to the PLC control system.
Furthermore, be equipped with first manual valve on filling the confluence calandria way, be equipped with the right angle valve on the high pressure gas cylinder.
Furthermore, the periphery of the high-pressure gas cylinder is also provided with a heat preservation pipeline.
Furthermore, a check valve positioned between the second automatic valve and the filling pipeline is also arranged on the air inlet pipeline.
The technical scheme of the invention has the following advantages:
1. according to the filling control system for the single-component or multi-component gas, when the air inlet pipeline is in an inflation state, the PLC control system controls the first automatic valve and the second automatic valve on the air inlet pipeline to be opened and the third automatic valve to be closed. When the air inlet pipeline is in a non-inflation state, the PLC control system controls the first automatic valve and the second automatic valve on the air inlet pipeline to be closed and the third automatic valve to be opened, if other air inlet pipelines are inflating, the first automatic valve and the second automatic valve leak, gas can be discharged outwards through the third automatic valve after passing through the second automatic valve, and cannot flow to an air supply source through the first automatic valve, so that the problems of gas cross-contamination and cross-contamination of various component gases cannot exist.
2. The filling control system for the single-component or multi-component gas is integrated with a vacuumizing function, and during the filling process of the high-pressure gas cylinder, the filling bus bar and the high-pressure gas cylinder can be vacuumized at first, so that the purity of the gas filled in the high-pressure gas cylinder can be improved; and the two processes of vacuumizing and filling the gas cylinder can be carried out at the same station, and compared with the mode that the high-pressure gas cylinder in the prior art can only be respectively vacuumized and filled at different stations, the method saves the problems of carrying the high-pressure gas cylinder and repeatedly connecting filling a busbar pipeline, and is simpler and more convenient to operate.
3. According to the single-component or multi-component gas filling control system provided by the invention, in the gas filling process, the first temperature transmitter can detect the temperature of the high-pressure gas cylinder, and the filling pressure of the high-pressure gas cylinder detected by the first pressure transmitter is corrected and compensated according to the relation between the temperature and the pressure, so that the gas cylinder filling accuracy is improved, and the proportion deviation of each component is reduced if mixed gas is filled.
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 described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a system schematic of a single component or multi-component gas filling control system according to one embodiment of the present invention;
fig. 2 is a system schematic diagram of a single component or multi-component gas filling control system according to a second embodiment of the present invention.
Description of reference numerals: 1. an air intake line; 11. a first automatic valve; 12. a second automatic valve; 13. a third automatic valve; 14. emptying the pipe; 15. a one-way valve; 21. filling a valve pipeline; 22. a charging valve; 23. a cushion valve line; 24. a cushion valve; 3. filling a busbar pipeline; 41. evacuating the line; 42. a bleeding automatic valve; 43. a vacuum pumping pipeline; 44. a vacuum pumping device; 45. a fourth automatic valve; 46. a fifth automatic valve; 47. a three-way automatic regulating valve; 48. a safety valve; 5. a high pressure gas cylinder; 6. a first pressure transmitter; 7. a second pressure transmitter; 8. a first temperature transmitter; 9. a heat preservation pipeline.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The filling control system for single-component or multi-component gas shown in figure 1 comprises a PLC control system and a pipeline system. The pipeline system comprises a plurality of air inlet pipelines 1, filling pipelines, a filling busbar pipeline 3, a main emptying pipeline and a high-pressure gas cylinder 5 which are connected in parallel; one end of the air inlet pipeline 1 is provided with a medium inlet communicated with an air source, the air inlet end of the filling pipeline is communicated with the air outlet ends of the air inlet pipelines 1, the air outlet end of the filling pipeline is communicated to the filling busbar pipeline 3, the high-pressure air bottle 5 is connected to the filling busbar pipeline 3, and the main emptying pipeline is communicated with the filling busbar pipeline 3.
The air inlet pipeline 1 is sequentially provided with a first automatic valve 11 and a second automatic valve 12 from an air inlet end to an air outlet end, a pipeline between the first automatic valve 11 and the second automatic valve 12 is communicated with an emptying pipe 14 communicated with the atmosphere, and the emptying pipe 14 is provided with a third automatic valve 13; the PLC control system is electrically connected with the first automatic valve 11, the second automatic valve 12 and the third automatic valve 13, and when the air inlet pipeline 1 is in an inflation state, the PLC control system controls the first automatic valve 11 and the second automatic valve 12 to be opened and controls the third automatic valve 13 to be closed; when the air inlet pipeline 1 is in a non-inflation state, the PLC control system controls the first automatic valve 11 and the second automatic valve 12 to be closed and the third automatic valve 13 to be opened. The inlet line 1 is also provided with a non-return valve 15 between the second automatic valve 12 and the filling line.
A first pressure transmitter 6 is arranged on the charging busbar pipeline 3; first pressure transmitter 6 is connected with PLC control system electricity for detect fill pressure signal in busbar pipeline 3 and upload to PLC control system with pressure signal. And a first manual valve for controlling the on-off of the filling busbar pipeline 3 is also arranged on the filling busbar pipeline 3.
The filling pipeline comprises a filling valve pipeline 21 and a buffer valve pipeline 23 which are arranged in parallel, a filling valve 22 electrically connected with the PLC control system is arranged on the filling valve pipeline 21, and a buffer valve 24 electrically connected with the PLC control system is arranged on the buffer valve pipeline 23; the PLC control system is used for controlling the opening of the filling valve 22 and the opening and closing of the buffer valve 24, and controlling the filling valve 22 or the buffer valve 24 to be closed when the pressure value detected by the first pressure transmitter 6 reaches a first preset value.
The main evacuation pipeline comprises an evacuation pipeline 41 and a vacuum-pumping pipeline 43, one end of the evacuation pipeline 41 is communicated with the charging bus-bar pipeline 3, the other end of the evacuation pipeline is communicated with the atmosphere, one end of the vacuum-pumping pipeline 43 is communicated with the charging bus-bar pipeline 3, and the other end of the vacuum-pumping pipeline is communicated with a vacuum-pumping device 44; a bleeding automatic valve 42 electrically connected with the PLC control system is arranged on the emptying pipeline 41, and a fourth automatic valve 45 and a fifth automatic valve 46 electrically connected with the PLC control system are arranged on the vacuumizing pipeline 43; when the pressure value detected by the first pressure transmitter 6 is smaller than the second preset value, the PLC control system controls the automatic bleeding valve 42 to be closed and the fourth automatic valve 45 and the fifth automatic valve 46 to be opened; when the pressure value detected by the first pressure transmitter 6 is less than the vacuum set value, the PLC control system controls the fourth automatic valve 45 and the fifth automatic valve 46 to close. A three-way automatic regulating valve 47 is further arranged between the fourth automatic valve 45 and the fifth automatic valve 46, and the other end of the three-way automatic regulating valve 47 is communicated with the atmosphere. The evacuation line 43 is also provided with a safety valve 48 which is communicated with the atmosphere.
The air inlet pipeline 1 is provided with a second pressure transmitter 7; the second pressure transmitter 7 is electrically connected with the PLC control system and is used for detecting a pressure signal in the air inlet pipeline 1 and uploading the pressure signal to the PLC control system; when the pressure difference value between the pressure value detected by the second pressure transmitter 7 and the pressure value detected by the first pressure transmitter 6 is greater than a third preset value, the PLC control system firstly controls the third automatic valve 13 to close and then controls the first automatic valve 11 and the second automatic valve 12 to open; when the pressure difference between the pressure value detected by the second pressure transmitter 7 and the pressure value detected by the first pressure transmitter 6 is smaller than a third preset value, the opening degree of the filling valve 22 is controlled to increase by the PLC control system.
The periphery of gas cylinder 5 is equipped with the first temperature transmitter 8 of being connected with the PLC control system electricity, and first temperature transmitter 8 is used for detecting the temperature signal of gas cylinder 5 and uploads temperature signal to PLC control system. The periphery of the high-pressure gas cylinder 5 is also provided with a heat insulation pipeline 9, and the heat insulation pipeline 9 plays a role in protecting the temperature of the high-pressure gas cylinder 5 and prevents the temperature of the high-pressure gas cylinder 5 from being reduced to influence the inflation precision. The high-pressure gas cylinder 5 is also provided with a right-angle valve for controlling the on-off of the high-pressure gas cylinder 5.
The working principle of the filling control system of the single-component or multi-component gas is as follows:
pipeline replacement: during filling, the high-pressure gas cylinder 5 is connected to the filling bus-bar pipeline 3, and a manual valve on the filling bus-bar pipeline 3 is opened to replace and vacuumize gas in the filling bus-bar pipeline 3 and the connecting hose. Opening the first automatic valve 11 and the second automatic valve 12 on the air inlet pipeline 1 which is selectively filled with the medium gas, and closing the third automatic valves 13 on all the air inlet pipelines 1; opening the buffer valve 24 or the filling valve 22, closing the buffer valve or the filling valve when the first pressure transmitter 6 detects that the pressure in the filling bus pipe 3 reaches a first preset value, opening the automatic bleeding valve 42 to bleed until the pressure value detected by the first pressure transmitter 6 is lower than a second preset value, then closing the automatic bleeding valve 42, opening the fourth automatic valve 45 and the fifth automatic valve 46, vacuumizing the filling bus pipe 3 until the pressure value detected by the first pressure transmitter 6 is lower than a vacuum set value, closing the fourth automatic valve 45 and the fifth automatic valve 46, and repeating twice to complete the vacuumizing of the pipe.
Replacement and vacuum-pumping of the high-pressure gas cylinder 5: and (3) opening a right-angle valve of the high-pressure gas cylinder 5, if the pressure value detected by the first pressure transmitter 6 is higher than a first preset value, opening the automatic bleeding valve 42 to bleed until the pressure value detected by the first pressure transmitter 6 is lower than the first preset value, then closing the automatic bleeding valve 42, opening the fourth automatic valve 45 and the fifth automatic valve 46, vacuumizing the high-pressure gas cylinder 5 until the pressure value detected by the first pressure transmitter 6 is lower than a vacuum set value, and closing the fourth automatic valve 45 and the fifth automatic valve 46. And (3) opening the slow filling valve (or the filling valve 22), closing the slow filling valve (or the filling valve 22) when the pressure value detected by the first pressure transmitter 6 reaches a second preset value, opening the fourth automatic valve 45 and the fifth automatic valve 46, vacuumizing until the pressure value detected by the first pressure transmitter 6 is lower than a vacuum set value, closing the fourth automatic valve 45 and the fifth automatic valve 46, and completing the vacuumizing of the high-pressure gas cylinder 5.
High-pressure gas filling with a temperature compensation function: according to the type of the selected filling medium, such as the first filling medium, firstly detecting the pressure value on the air inlet pipeline 1, when the pressure difference between the pressure value detected by the second pressure transmitter 7 and the pressure value detected by the first pressure transmitter 6 is smaller than a third preset value, closing the normally open third automatic valve 13, then opening the first automatic valve 11 and the second automatic valve 12, the first filling medium enters the filling pipeline, opening the slow filling valve (or opening the filling valve 22 to a set smaller opening), the filling medium enters the high-pressure gas cylinder 5 through the filling bus pipeline 3, when the pressure difference between the pressure value detected by the second pressure transmitter 7 and the pressure value detected by the first pressure transmitter 6 is smaller than the third preset value, opening the filling valve 22, filling the high-pressure gas cylinder 5, and the temperature change of the high-pressure gas cylinder 5 during the filling process is detected by the first temperature transmitter 8, the filling pressure of the high-pressure gas cylinder 5 is corrected according to P1V1/T1 ═ P2V 2/T2. When the pressure value detected by the first pressure transmitter 6 reaches the required filling pressure, the filling valve 22 is closed, at this time, the pressure value detected by the first pressure transmitter 6 will drop, because the slow filling valve is in an open state, the filling medium will continue to enter slowly for a while, and when the pressure value detected by the first pressure transmitter 6 reaches the filling pressure again, the slow filling valve is closed, and the filling is completed.
In the case of mixed gas filling, the filling pressures of the components are distributed according to the set values of the components, and filling is performed at a time from the beginning of the low component ratio.
The design for preventing the mutual gas cross-contamination and cross-contamination of component gases comprises the following steps: the air inlet pipeline 1 of each medium is designed with three automatic valves, for example, the air inlet pipeline 1 filled with the first medium is designed, the third automatic valve 13 is normally opened, the first automatic valve 11 and the second automatic valve 12 are normally closed, if the first automatic valve 11 and the second automatic valve 12 leak, the leakage gas is diffused through the opened third automatic valve 13, and the gas cross-contamination and the cross-contamination of each component gas are effectively prevented.
Example two
The filling control system for single-or multi-component gases as shown in fig. 2 differs from the first embodiment in that the filling line only comprises a filling valve line 21 and a filling valve 22 arranged on the filling valve line 21, and the PLC control system is adapted to control the opening size of the filling valve 22 and to control the filling valve 22 to close when the pressure value detected by the first pressure transmitter 6 reaches a first preset value.
In summary, the filling control system for single-component or multi-component gas provided by the embodiment of the invention has the following beneficial effects:
firstly, when the air inlet pipeline 1 is in an inflation state, the PLC control system controls the first automatic valve 11 and the second automatic valve 12 on the air inlet pipeline 1 to be opened and the third automatic valve 13 to be closed. When the air inlet pipeline 1 is in a non-inflation state, the PLC control system controls the first automatic valve 11 and the second automatic valve 12 on the air inlet pipeline 1 to be closed and the third automatic valve 13 to be opened, if other air inlet pipelines 1 are inflating, the first automatic valve 11 and the second automatic valve 12 leak, gas can be discharged outwards through the third automatic valve 13 after passing through the second automatic valve 12, and cannot flow to an air supply source through the first automatic valve 11, so that the problems of gas cross-contamination and gas cross-contamination of various components cannot exist.
Secondly, the vacuum pumping function is integrated, so that the filling busbar and the high-pressure gas cylinder 5 can be pumped vacuum firstly in the filling process of the high-pressure gas cylinder 5, and the purity of gas filled in the high-pressure gas cylinder 5 is improved; and the two processes of vacuumizing and filling the gas cylinder can be carried out at the same station, and compared with the mode that the high-pressure gas cylinder 5 in the prior art can only be vacuumized and filled respectively at different stations, the problem of repeated connection of carrying the high-pressure gas cylinder 5 and filling the busbar pipeline 3 is solved, so that the operation is simpler and more convenient.
And thirdly, in the gas filling process, the first temperature transmitter 8 can detect the temperature of the high-pressure gas cylinder 5, and the filling pressure of the high-pressure gas cylinder 5 detected by the first pressure transmitter 6 is corrected and compensated according to the relation between the temperature and the pressure, so that the gas cylinder filling accuracy is improved, and the proportion deviation of each component is reduced if mixed gas filling is carried out.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (3)
1. The filling control system for the single-component or multi-component gas is characterized by comprising a PLC control system and a pipeline system, wherein the pipeline system comprises a plurality of air inlet pipelines (1), filling pipelines, a filling bus-bar pipeline (3), a main emptying pipeline and a high-pressure gas bottle (5) which are connected in parallel; one end of the air inlet pipeline (1) is provided with a medium inlet, one end of the filling pipeline is communicated with the air outlet ends of the air inlet pipelines (1), the other end of the filling pipeline is communicated to the filling bus-bar pipeline (3), the high-pressure gas cylinder (5) is connected to the filling bus-bar pipeline (3), and the main emptying pipeline is communicated with the filling bus-bar pipeline (3); a first automatic valve (11) and a second automatic valve (12) are sequentially arranged on the air inlet pipeline (1) from the air inlet end to the air outlet end, an emptying pipe (14) communicated with the atmosphere is communicated on a pipeline between the first automatic valve (11) and the second automatic valve (12), and a third automatic valve (13) is arranged on the emptying pipe (14); the PLC control system is electrically connected with the first automatic valve (11), the second automatic valve (12) and the third automatic valve (13), and when the air inlet pipeline (1) is in an inflation state, the PLC control system controls the first automatic valve (11) and the second automatic valve (12) to be opened and the third automatic valve (13) to be closed; when the air inlet pipeline (1) is in a non-inflation state, the PLC control system controls the first automatic valve (11) and the second automatic valve (12) to be closed and controls the third automatic valve (13) to be opened;
a first pressure transmitter (6) is arranged on the filling busbar pipeline (3); the first pressure transmitter (6) is electrically connected with the PLC control system and is used for detecting a pressure signal in the charging busbar pipeline (3) and uploading the pressure signal to the PLC control system;
the filling pipeline comprises a filling valve pipeline (21) and a buffer valve pipeline (23) which are arranged in parallel, a filling valve (22) electrically connected with the PLC control system is arranged on the filling valve pipeline (21), and a buffer valve (24) electrically connected with the PLC control system is arranged on the buffer valve pipeline (23); the PLC control system is used for controlling the opening of the filling valve (22) and the opening and closing of the buffer valve (24), and controlling the filling valve (22) or the buffer valve (24) to be closed when the pressure value detected by the first pressure transmitter (6) reaches a first preset value;
the main exhaust pipeline comprises an exhaust pipeline (41) and a vacuumizing pipeline (43), one end of the exhaust pipeline is communicated with the filling bus-bar pipeline (3), the other end of the exhaust pipeline is communicated with the atmosphere, one end of the vacuumizing pipeline (43) is communicated with the filling bus-bar pipeline (3), and the other end of the vacuumizing pipeline is communicated with a vacuumizing device (44); a bleeding automatic valve (42) electrically connected with the PLC control system is arranged on the emptying pipeline (41), and a fourth automatic valve (45) and a fifth automatic valve (46) electrically connected with the PLC control system are arranged on the vacuumizing pipeline (43); when the pressure value detected by the first pressure transmitter (6) is smaller than a second preset value, the PLC control system controls the automatic bleeding valve (42) to be closed, and the fourth automatic valve (45) and the fifth automatic valve (46) to be opened; when the pressure value detected by the first pressure transmitter (6) is smaller than the vacuum set value, the PLC control system controls the fourth automatic valve (45) and the fifth automatic valve (46) to be closed;
a second pressure transmitter (7) is arranged on the air inlet pipeline (1); the second pressure transmitter (7) is electrically connected with the PLC control system and is used for detecting a pressure signal in the air inlet pipeline (1) and uploading the pressure signal to the PLC control system; when the pressure difference value between the pressure value detected by the second pressure transmitter (7) and the pressure value detected by the first pressure transmitter (6) is larger than a third preset value, the PLC control system firstly controls the third automatic valve (13) to be closed and then controls the first automatic valve (11) and the second automatic valve (12) to be opened; when the pressure difference value between the pressure value detected by the second pressure transmitter (7) and the pressure value detected by the first pressure transmitter (6) is smaller than a third preset value, the PLC control system controls the opening of the filling valve (22) to increase;
the high-pressure gas cylinder temperature sensor is characterized by further comprising a first temperature transmitter (8) electrically connected with the PLC control system, wherein the first temperature transmitter (8) is used for detecting a temperature signal of the high-pressure gas cylinder (5) and uploading the temperature signal to the PLC control system;
a first manual valve is arranged on the filling busbar pipeline (3), and a right-angle valve is arranged on the high-pressure gas cylinder (5);
pipeline replacement: during filling, the high-pressure gas cylinder (5) is connected to the filling bus pipe (3), a manual valve on the filling bus pipe (3) is opened, and gas in the filling bus pipe (3) and the connecting hose is replaced and vacuumized; opening a first automatic valve (11) and a second automatic valve (12) on the air inlet pipeline (1) selectively filled with medium gas, and closing third automatic valves (13) on all the air inlet pipelines (1); opening a buffer valve (24) or a filling valve (22), closing the buffer valve or the filling valve when a first pressure transmitter (6) detects that the pressure in a filling busbar pipeline (3) reaches a first preset value, opening a bleeding automatic valve (42) to diffuse until the pressure value detected by the first pressure transmitter (6) is lower than a second preset value, then closing the bleeding automatic valve (42), opening a fourth automatic valve (45) and a fifth automatic valve (46), vacuumizing the filling busbar pipeline (3) until the pressure value detected by the first pressure transmitter (6) is lower than a vacuum set value, closing the fourth automatic valve (45) and the fifth automatic valve (46), and repeating twice to finish the vacuumizing of the pipeline;
and (3) replacing and vacuumizing the high-pressure gas cylinder (5): opening a right-angle valve of the high-pressure gas cylinder (5), if the pressure value detected by the first pressure transmitter (6) is higher than a first preset value, opening the automatic bleeding valve (42) to bleed until the pressure value detected by the first pressure transmitter (6) is lower than the first preset value, then closing the automatic bleeding valve (42), opening a fourth automatic valve (45) and a fifth automatic valve (46), vacuumizing the high-pressure gas cylinder (5) until the pressure value detected by the first pressure transmitter (6) is lower than a vacuum set value, and closing the fourth automatic valve (45) and the fifth automatic valve (46); opening the buffer valve (24) or the filling valve (22), closing the buffer valve (24) or the filling valve (22) when the pressure value detected by the first pressure transmitter (6) reaches a second preset value, opening the fourth automatic valve (45) and the fifth automatic valve (46), vacuumizing until the pressure value detected by the first pressure transmitter (6) is lower than a vacuum set value, and closing the fourth automatic valve (45) and the fifth automatic valve (46) to finish the vacuumizing of the high-pressure gas cylinder (5);
high-pressure gas filling with a temperature compensation function: firstly detecting the pressure value on the air inlet pipeline (1), closing a normally open third automatic valve (13) when the pressure difference between the pressure value detected by a second pressure transmitter (7) and the pressure value detected by a first pressure transmitter (6) is greater than a third preset value, then opening a first automatic valve (11) and a second automatic valve (12), enabling a filling medium to enter a filling pipeline, opening a buffer valve (24) or opening a filling valve (22) to a set smaller opening degree, enabling the filling medium to enter a high-pressure gas cylinder (5) through a filling bus pipeline (3), opening the filling valve (22) when the pressure difference between the pressure value detected by the second pressure transmitter (7) and the pressure value detected by the first pressure transmitter (6) is smaller than the third preset value, filling the high-pressure gas cylinder (5), and detecting the temperature change of the high-pressure gas cylinder (5) in the filling process by a first temperature transmitter (8), the filling pressure of the high-pressure gas cylinder (5) is corrected according to P1V 1/T1-P2V 2/T2; when the pressure value detected by the first pressure transmitter (6) reaches the required filling pressure, the filling valve (22) is closed, the pressure value detected by the first pressure transmitter (6) drops, the filling medium continues to enter slowly for a while because the buffer valve is in an open state, and when the pressure value detected by the first pressure transmitter (6) reaches the filling pressure again, the buffer valve (24) or the filling valve (22) is closed, and filling is completed.
2. The single-or multi-component gas filling control system according to claim 1, characterized in that the high-pressure gas cylinder (5) is further provided with a thermal insulation line (9) at its periphery.
3. Single-or multi-component gas filling control system according to claim 1, wherein the gas inlet line (1) is further provided with a non-return valve (15) between the second automatic valve (12) and the filling line.
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| DE4205126A1 (en) * | 1992-02-20 | 1993-08-26 | Messer Griesheim Gmbh | METHOD FOR PRODUCING A GAS MIXTURE |
| JP3622998B2 (en) * | 1994-09-13 | 2005-02-23 | 岩谷産業株式会社 | Filling method of trace gas |
| CN203500854U (en) * | 2013-10-16 | 2014-03-26 | 武汉钢铁(集团)公司 | Gas distributing device for liquefying toxic mixed gas |
| CN105090738B (en) * | 2015-07-09 | 2017-04-12 | 上海舜华新能源***有限公司 | Multi-functional natural gas and hydrogen mixing gas station and filling method |
| CN108119749B (en) * | 2017-12-20 | 2020-06-16 | 国网河北省电力有限公司电力科学研究院 | SF (sulfur hexafluoride)6And N2Mixed gas inflating device and accurate inflating method |
| CN208670585U (en) * | 2018-08-21 | 2019-03-29 | 济南德洋特种气体有限公司 | Compressed gas gas cylinder replacement Treatment and fill integrated apparatus |
| CN109268680B (en) * | 2018-10-18 | 2023-10-27 | 浙江海畅气体股份有限公司 | Automatic filling device for industrial gas |
| CN210511031U (en) * | 2019-07-17 | 2020-05-12 | 上海磊诺安防技术股份有限公司 | Industry mist fills dress structure |
| CN212869346U (en) * | 2020-08-06 | 2021-04-02 | 沈阳洪生气体有限公司 | Automatic filling device of binary gas mixture |
| CN212900918U (en) * | 2020-08-06 | 2021-04-06 | 沈阳洪生气体有限公司 | Multi-component gas mixture filling system |
| CN112856216A (en) * | 2021-02-02 | 2021-05-28 | 济南华信自动化工程有限公司 | Intelligent three-component mixed gas high-pressure gas cylinder filling system |
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