CN208169990U - Mixed gas suitable for mass flow mixing method fills error-compensating apparatus - Google Patents

Mixed gas suitable for mass flow mixing method fills error-compensating apparatus Download PDF

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Publication number
CN208169990U
CN208169990U CN201820656841.1U CN201820656841U CN208169990U CN 208169990 U CN208169990 U CN 208169990U CN 201820656841 U CN201820656841 U CN 201820656841U CN 208169990 U CN208169990 U CN 208169990U
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China
Prior art keywords
gas
filling
switch gear
flow controller
tension switch
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Expired - Fee Related
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CN201820656841.1U
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Chinese (zh)
Inventor
丁五行
蔡洪波
李群
李宝明
舒广铭
王鑫
闫博
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • 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
    • 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
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • 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
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • 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
    • 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
    • F17C2250/03—Control means
    • 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
    • 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
    • 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
    • F17C2250/0447—Composition; Humidity
    • F17C2250/0452—Concentration of a product

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The utility model provides a kind of mixed gas filling error-compensating apparatus suitable for mass flow mixing method, by the way that entire filling process is divided into filling two stages of calibration phase and compensated stage, pressure is filled into high-tension switch gear with first gas aimed concn C in filling calibration phase and reaches preset filling calibration phase goal pressure P0And obtain the measured concentration C of the first gas in high-tension switch gear0, according to measured concentration C0And aimed concn C obtains filling correction factor k, and determine that the first gas of compensated stage fills concentration in compensated stage, and by controlling first gas and second gas mixture ratio after filling correction factor k amendment until being filled into pressure in high-tension switch gear reaches filling terminal pressure P, so that the concentration of the first gas in high-tension switch gear can be closer to aimed concn, it eliminates environment temperature, pressure and other factors in filling process and causes error, improve the accuracy of filling.

Description

Mixed gas suitable for mass flow mixing method fills error-compensating apparatus
Technical field
The utility model relates to power industry apparatus field more particularly to a kind of mixed gas suitable for mass flow mixing method Fill error-compensating apparatus.
Background technique
Sulfur hexafluoride (SF6) gas is optimal insulation and arc-extinguishing medium so far, but with modern science and technology Development and attention of the people to environmental problem, SF6Greenhouse effects get growing concern for, reduce SF to the greatest extent6Use at For the direction of high-voltage electrical equipment insulating gas research.Additionally, due to SF6The condensing temperature of gas is about -62 DEG C under normal pressure, When it is filled with high-voltage electrical equipment, gas pressure is 0.6MPa or so, at this pressure SF6Condensing temperature is about -25 DEG C.? Northern China, cold winter are likely to make SF6It liquefies, to reduce dielectric strength, influences high-voltage electrical equipment It works normally, or even causes peril.
Based on both the above reason, substitution SF is begun look for both at home and abroad6The Insulation Scheme of gas.Currently, it is believed that Finding for the previous preferable method of articles is to replace pure SF with mixed gas6Gas serves as dielectric, to reduce SF6Gas The dosage of body, while reducing the condensing temperature of insulating gas.Through development test, mixed gas can use SF6/N2Or SF6/CF4, Wherein SF6/N2With prospects for commercial application, development trend now is to reduce SF in mixed gas to the greatest extent6Content.Gaseous mixture The application of body, so that mixed gas filling device becomes necessary equipment in the construction and maintenance of substation's high-tension switch gear.
Current contains SF6The mixed gas filling device of mixed gas is all made of flow mixing method, by the flow for controlling gas Directly by SF6The each component gas of mixed gas fills in high-tension switch gear, but due to the density of gas by environment temperature, The influence of the factors such as pressure is very big, causes flow control there is also very big error, causes to fill mixed gas in high-tension switch gear Concentration error it is larger, be extremely difficult to aimed concn.
Utility model content
The utility model provides a kind of mixed gas filling error-compensating apparatus suitable for mass flow mixing method, so that right Concentration can reach aimed concn after high-tension switch gear filling mixed gas, reduce in filling process environment temperature, pressure with And other factors cause error, improve the accuracy of filling.
The utility model provides a kind of mixed gas filling error-compensating apparatus suitable for mass flow mixing method, including：
Surge tank is mixed, is provided with two inlet channels for being respectively used to be passed through first gas and second gas, described two First flow controller and second flow controller are respectively arranged on a inlet channel；The mixing surge tank is additionally provided with row Gas channel is connected to by supercharging device with high-tension switch gear；
Pressure sensor, for obtaining pressure in the high-tension switch gear；
Gas purity test device, for obtaining the concentration of first gas in the high-tension switch gear；
Control system, with the first flow controller, the second flow controller, the pressure sensor and institute State the connection of gas purity test device signal；
The control system can be controlled in filling calibration phase to the first flow controller and the second flow Device sends first control signal so that the first flow controller and the second flow controller are according to first control Signal fills the first gas and the second gas to mixing surge tank mixing with first gas aimed concn C High-tension switch gear is injected, until pressure reaches preset filling school from the high-tension switch gear that the pressure sensor is got Positive stage goal pressure P0；And the reality of the first gas in the high-tension switch gear is obtained from the gas purity test device Survey concentration C0；
The control system can also fill concentration according to the first gas of compensated stage in compensated stage and filling is corrected Coefficient k sends second control signal so that the first flow to the first flow controller and the second flow controller Controller and the second flow controller fill the first gas and the second gas according to the second control signal High-tension switch gear is injected after being charged to the mixing surge tank mixing, until setting from the high-voltage switch gear that the pressure sensor is got Standby middle pressure reaches filling terminal pressure P, wherein the filling correction factor k is according to the measured concentration C0And the target What concentration C obtained, the first gas filling concentration of the compensated stage is according to the measured concentration C0, the aimed concn C, The filling calibration phase goal pressure P0And filling terminal pressure P acquisition.
Further, described device further includes：
Constant temperature heating device is connect with the control system signal, and the constant temperature heating device is set to described first-class Before amount controller and second flow controller, make the first gas and the second gas respectively through the constant temperature heating device It is heated to entering the first flow controller and second flow controller after temperature is identical.
Further, described device further includes：
Temperature sensor is connect with the control system signal, is entered described in the constant temperature heating device for detecting The temperature of the temperature of first gas and the second gas, and be sent to the control system so that the control system according to The temperature of the temperature of the first gas and the second gas sends thermal control signals to the constant temperature heating device.
Further, the control system includes communication component, processor and memory；
The communication component and the first flow controller, the second flow controller, the pressure sensor with And the gas purity test device signal connection.
Further, the communication component is wireless communication components.
Further, the gas purity test device is set on the high-tension switch gear, and the gas purity Test device is provided with wireless communication module, is wirelessly connected with the communication component.
Further, the gas purity test device is additionally provided with rechargeable battery, for surveying to the gas purity Power supply is set in trial assembly.
Further, the constant temperature heating device is gas hot filtration apparatus.
Further, described device further includes：
Be loaded with two gas cylinders of the first gas and the second gas respectively, described two gas cylinders respectively with an institute State inlet channel connection.
Further, the first gas is SF6Gas, the second gas are N2Gas or CF4Gas.
Mixed gas provided by the utility model suitable for mass flow mixing method fills error-compensating apparatus, by will be entire Filling process is divided into filling two stages of calibration phase and compensated stage, in filling calibration phase with first gas aimed concn C Filling pressure into high-tension switch gear reaches preset filling calibration phase goal pressure P0And it obtains in high-tension switch gear First gas measured concentration C0, according to measured concentration C0And aimed concn C obtains filling correction factor k, and in compensated stage Determine the first gas filling concentration of compensated stage, and by controlling first gas and second gas after filling correction factor k amendment Mixture ratio reaches filling terminal pressure P until being filled into pressure in high-tension switch gear.The method of the utility model by Filling calibration phase obtains the measured concentration of the first gas in high-tension switch gear to obtain filling correction factor, is compensating Stage is modified with filling correction factor to filling concentration to reduce the error of compensated stage generation, and to filling calibration phase The concentration difference of middle generation compensates, so that the concentration of the first gas in high-tension switch gear can be closer to target Concentration eliminates environment temperature, pressure and other factors in filling process and causes error, improves the accuracy of filling.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that the mixed gas provided by the embodiment of the utility model suitable for mass flow mixing method fills error compensating method Flow chart；
Fig. 2 is that the mixed gas suitable for mass flow mixing method that an embodiment of the present invention provides fills error compensation dress The structure chart set；
Fig. 3 is that the mixed gas suitable for mass flow mixing method that another embodiment of the utility model provides fills error compensation The structure chart of device.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is that the mixed gas provided by the embodiment of the utility model suitable for mass flow mixing method fills error compensating method Flow chart.Present embodiments provide a kind of mixed gas filling error compensating method suitable for mass flow mixing method, this method tool Steps are as follows for body：
S101, filling calibration phase, inject high after being mixed first gas and second gas with first gas aimed concn C Voltage switching station, until pressure reaches preset filling calibration phase goal pressure P in the high-tension switch gear0；And obtain institute State the measured concentration C of the first gas in high-tension switch gear0, according to the measured concentration C0And the aimed concn C is obtained and is filled Fill correction factor k.
In the present embodiment, it is contemplated that environment temperature, pressure and other factors cause gas volume in filling process The error of variation or flow controller, so that first gas concentration can not accurately be filled into target rich in high-tension switch gear There are one since the presence of filling error causes in final high-tension switch gear first gas concentration with aimed concn for degree namely item Fixed concentration difference, therefore entire filling process is divided into two stages, namely filling calibration phase and compensation rank in the present embodiment Section obtains filling modification positive coefficient in filling calibration phase, and second stage produces filling calibration phase according to filling correction factor Raw concentration difference compensates, so that the concentration of the first gas in high-tension switch gear can be closer to target rich Degree, improves the accuracy of filling.In the present embodiment, the first gas is SF6Gas, the second gas are N2Gas or CF4Gas.Certainly, method provided in this embodiment can also be applied among the process for filling other mixed gas.
In the present embodiment, filling target is that first gas concentration reaches aimed concn C in high-tension switch gear, and height presses off It closes pressure in equipment and reaches filling terminal pressure P, it should be noted that the concentration in the utility model is concentration expressed in percentage by volume. Filling calibration phase filled first with aimed concn C, specifically, can be determined according to aimed concn C first gas and Second gas mixture ratio, such as it is 3 that aimed concn C, which is 30%, then first gas and second gas mixture ratio,:7, according to The flow of one gas and second gas mixture ratio control first gas and second gas, first gas and second gas are mixed After be filled into high-tension switch gear, until high-tension switch gear in pressure reach preset filling calibration phase goal pressure P0.Due to filling the presence of error, the measured concentration C of the first gas in high-tension switch gear is obtained after filling0It can Can and it be not equal to aimed concn C, according to measured concentration C0It is compared with aimed concn C, thus learn the size of filling error, And then filling process can be corrected according to the size of filling error, to can be realized setting in subsequent filling process Filling concentration can be filled with the concentration being closer to.The present embodiment especially by available filling correction factor k, with Filling concentration is modified according to filling correction factor k in compensated stage.Pass through measured concentration in high-tension switch gear simultaneously C0Comparison with aimed concn C can also get the concentration difference that filling calibration phase generates, and be also convenient in compensated stage to concentration Difference compensates.
S102, compensated stage, according to the measured concentration C0, the aimed concn C, the filling calibration phase target pressure Power P0And filling terminal pressure P, determine the first gas filling concentration of compensated stage, and with the filling of the first gas of compensated stage Concentration and the filling correction factor k inject the high-voltage switch gear after mixing the first gas and the second gas and set It is standby, until pressure reaches filling terminal pressure P in the high-tension switch gear.
In the present embodiment, although since pressure has reached filling correction in high-tension switch gear in filling calibration phase Phase targets pressure P0, but in high-tension switch gear first gas measured concentration C0And not up to aimed concn C, it is therefore desirable to It is compensated in the concentration difference that compensated stage generates the filling correction stage, it can be according to measured concentration C0, aimed concn C, fill Fill calibration phase goal pressure P0And filling terminal pressure P obtains the first gas filling concentration of compensated stage, further according to first Gas filling concentration and filling correction factor k determine first gas and second gas mixture ratio, by first gas and the second gas It is filled into high-tension switch gear after body mixing, until pressure reaches filling terminal pressure P in high-tension switch gear, by filling The correction of correction factor so that actual filling concentration more fills concentration close to first gas in the filling process of compensated stage, The concentration difference generated in filling calibration phase can be compensated so as to realize, while also reducing the error that compensated stage generates.
Mixed gas provided in this embodiment suitable for mass flow mixing method fills error compensating method, by will entirely fill The process of filling is divided into filling two stages of calibration phase and compensated stage, in filling calibration phase with first gas aimed concn C filling It is charged to pressure in high-tension switch gear and reaches preset filling calibration phase goal pressure P0And it obtains in high-tension switch gear The measured concentration C of first gas0, according to measured concentration C0And aimed concn C obtains filling correction factor k, and true in compensated stage Determine the first gas filling concentration of compensated stage, and is mixed by control first gas after filling correction factor k amendment and second gas Gas ratio reaches filling terminal pressure P until being filled into pressure in high-tension switch gear.Method provided in this embodiment by Filling calibration phase obtains the measured concentration of the first gas in high-tension switch gear to obtain filling correction factor, is compensating Stage is modified with filling correction factor to filling concentration to reduce the error of compensated stage generation, and to filling calibration phase The concentration difference of middle generation compensates, so that the concentration of the first gas in high-tension switch gear can be closer to target Concentration eliminates environment temperature, pressure and other factors in filling process and causes error, improves the accuracy of filling.
On the basis of the above embodiments, according to the measured concentration C described in S1010And the aimed concn C is obtained Correction factor k is filled, specifically may include：
The filling correction factor k is determined according to the following formula：
Fill correction factor k=C/C0。
Concentration and the filling correction factor k are then filled with the first gas of compensated stage described in S102, by described the The high-tension switch gear is injected after one gas and second gas mixing, is specifically included：
Filling concentration according to the first gas determines first gas and second gas mixture ratio for Q1:(100-Q1)；
With (Q1×k):(100-(Q1× k)) ratio control first gas and second gas flow, by first gas The high-tension switch gear is injected after body and second gas mixing.
In the present embodiment, concentration is filled to first gas by filling correction factor to be modified, it is mixed to be embodied in amendment In gas ratio, wherein the flow of control second gas is constant, it is corrected with filling correction factor k to the flow of first gas, So that actual concentrations reach first gas filling concentration in filling process.Such as first gas aimed concn C is 30%, fills school The measured concentration C of first gas after the positive stage in high-tension switch gear0Reach 28.5% namely first gas filling Practical filling underfed in the process, then fill correction factor k=C/C0Furthermore=30/28.5=1.053 determines the first gas It is, for example, 35% that body, which fills concentration, then first gas and second gas mixture ratio should be Q1:(100-Q1)=35:65, but due to The presence of error is filled, if pressing 35:The flow of 65 control first gas and second gas, then actually not with 35:65 carry out It fills, by with (Q in the present embodiment1×k):(100-(Q1× k))=(35 × 1.053):(100- (35 × 1.053))= 36.855:63.145 control first gas and second gas flow, at this time then first gas and second gas in filling process In actual ratio be 35:65, to reduce filling error.
As the further improvement of above-described embodiment, the compensated stage includes N number of sub-stage, and wherein N is whole greater than 0 Number；
Concentration C M is filled with first gas in i-th of sub-stageiAnd the filling correction factor k, by the first gas The high-tension switch gear is injected with after second gas mixing, until pressure reaches sub-stage mesh in the high-tension switch gear Mark pressure Pi, and obtain the measured concentration C of the first gas in the high-tension switch geari；
Wherein CMi=(Pi×C-Pi-1×Ci-1)/(Pi-Pi-1)
Wherein 1≤i≤N, PiFor i-th of sub-stage goal pressure, P0To fill calibration phase goal pressure, the sub- rank of n-th The goal pressure P of sectionNEqual to filling terminal pressure P；CiFor the actual measurement of the first gas in i-th of sub-stage high-tension switch gear Concentration, C0For the measured concentration of the first gas in filling calibration phase high-tension switch gear, C is first gas aimed concn.
In the present embodiment, compensated stage can only include a stage, also may include more than two sub-stages, wherein Preferably two sub-stages will only include a stage (namely N=1) with compensated stage respectively below and compensated stage includes two A stage (namely N=2) illustrates.
Example one
SF is filled for high-tension switch gear6And N2Mixed gas namely first gas be SF6, second gas N2, SF in high-tension switch gear6Aimed concn C is 30%, and filling terminal pressure P reaches 0.9MPa, setting filling calibration phase target Pressure P0For 0.3MPa, compensated stage goal pressure P1Equal to filling terminal pressure 0.9Mpa.
Calibration phase is filled, with SF6Aimed concn 30% determines SF6And N2Mixture ratio is 3:7, and be with mixture ratio 3:7 control flows inject high-tension switch gear after being mixed, until pressure reaches 0.3MPa in high-tension switch gear, examine at this time Survey SF in high-tension switch gear6Measured concentration C0It is 28.5%, then obtains filling correction factor k=C/C at this time0=30/28.5= 1.053。
Compensated stage, due to SF in the first stage6Measured concentration C0It is relatively low compared with aimed concn C, therefore needed in compensated stage The concentration difference generated to filling calibration phase compensates, and improves SF6Filling concentration, fill concentration C M1Following formula can be passed through It calculates：
CM1=(P1×C–P0×C0)/(P1-P0)=(0.9 × 30% -0.3 × 28.5%)/(0.9-0.3)=30.75%
Then according to filling concentration C M1Determine SF6And N2Mixture ratio is 30.75:69.25, then according to filling amendment system Number k is modified, SF after modification just6And N2Mixture ratio is (Q1×k):(100-(Q1× k))=(30.75 × 1.053): (100- (30.75 × 1.053))=32.38:67.62, and with mixture ratio for 32.38:After 67.62 control flows are mixed High-tension switch gear is injected, until pressure reaches 0.9Mpa in high-tension switch gear, filling process terminates.
Example two
SF is filled for high-tension switch gear6And N2Mixed gas namely first gas be SF6, second gas N2, SF in high-tension switch gear6Aimed concn C is 30%, and filling terminal pressure P reaches 0.9MPa, setting filling calibration phase target Pressure P0For 0.3MPa, compensated stage the first sub-stage goal pressure P1For 0.6Mpa, the second sub-stage goal pressure P2Equal to filling Fill terminal pressure 0.9Mpa.
Calibration phase is filled, with SF6Aimed concn 30% determines SF6And N2Mixture ratio is 3:7, and be with mixture ratio 3:7 control flows inject high-tension switch gear after being mixed, until pressure reaches 0.3MPa in high-tension switch gear, examine at this time Survey SF in high-tension switch gear6Measured concentration C0It is 28.5%, then obtains filling correction factor k=C/C at this time0=30/28.5= 1.053。
The first sub-stage of compensated stage fills concentration C M1It can be calculated by the following formula：
CM1=(P1×C–P0×C0)/(P1-P0)=(0.6 × 30% -0.3 × 28.5%)/(0.6-0.3)=31.5%
Then according to filling concentration C M1Determine SF6And N2Mixture ratio is 31.5:68.5, then according to filling correction factor K is modified, SF after modification just6And N2Mixture ratio is (31.5 × 1.053):(100- (31.5 × 1.053))=33.17: 66.83, and with mixture ratio for 33.17:66.83 control flows inject high-tension switch gear after being mixed, until height presses off It closes pressure in equipment and reaches 0.6Mpa, detect SF in high-tension switch gear at this time6Measured concentration C1It is 30.2%；
The second sub-stage of compensated stage fills concentration C M2It can be calculated by the following formula：
CM2=(P2×C–P1×C1)/(P2-P1)=(0.9 × 30% -0.3 × 30.2%)/(0.9-0.6)=29.6%
Then according to filling concentration C M2Determine SF6And N2Mixture ratio is 29.6:70.4, then according to filling correction factor K is modified, SF after modification just6And N2Mixture ratio is (29.6 × 1.053):(100- (29.6 × 1.053))=31.17: 68.83, and with mixture ratio for 31.17:68.83 control flows inject high-tension switch gear after being mixed, until height presses off It closes pressure in equipment and reaches 0.9Mpa, filling process terminates.
In above-mentioned example two, filling process is divided into filling calibration phase goal pressure P0And two sub-stages of compensated stage, It fills in total three times, the goal pressure in filling is respectively 0.3MPa, 0.6MPa, 0.9MPa three times, will also fill terminal Pressure P is divided into three parts, namely：
Fill calibration phase goal pressure P0It determines according to the following formula：
P0=P/ (N+1)；
I-th of sub-stage goal pressure P of the compensated stageiIt determines according to the following formula：
Pi=P × (i+1)/(N+1).
Each phase targets pressure is set using formula as above in filling process, can enable and fill calibration phase Accurately obtain the measured concentration C of the first gas in high-tension switch gear0, it is also convenient in each sub-stage of compensated stage The concentration difference in a filling process can be adequately compensated, the accuracy of control is improved.
As the further improvement of the various embodiments described above, injection high-voltage switch gear is set after first gas and second gas are mixed Before standby, further include：
Heated at constant temperature is carried out to the first gas and second gas, so that the temperature of the first gas and second gas It is identical.
It is each when first gas and second gas temperature difference in view of the volume and temperature of gas have substantial connection There is different variations from volume, at this time by being filled with scheduled flow, then there may be biggish filling error, because By carrying out heated at constant temperature to first gas and second gas in this present embodiment, protect the temperature of first gas and second gas Hold it is constant, so as to reduce temperature generation filling error, the stability contorting being also convenient in filling process.
It furthermore, can also be by artificial it should be noted that the process in above-described embodiment can be automatically performed by control system Operation is realized.
Specifically, when being automatically performed by control system, method provided by the above embodiment specifically may include：
It fills calibration phase and sends the first control letter from control system to first flow controller and second flow controller Number so that the first flow controller and the second flow controller according to the first control signal by first gas Body and the second gas inject high-tension switch gear after filling with first gas aimed concn C to mixing surge tank mixing, directly Reach preset filling calibration phase goal pressure P to pressure in high-tension switch gear is obtained by pressure sensor0；And pass through Gas purity test device obtains the measured concentration C of the first gas in the high-tension switch gear0；
Compensated stage is by the control system according to the measured concentration C0, the aimed concn C, the filling correct rank Section goal pressure P0And filling terminal pressure P, determine the first gas filling concentration of compensated stage；And according to the of compensated stage One gas fills concentration and filling correction factor k and sends second to the first flow controller and the second flow controller Signal is controlled so that the first flow controller and the second flow controller will be described according to the second control signal First gas and the second gas inject high-tension switch gear after filling to mixing surge tank mixing, until by described Pressure reaches filling terminal pressure P in the high-tension switch gear that pressure sensor is got.
Fig. 2 is that the mixed gas suitable for mass flow mixing method that an embodiment of the present invention provides fills error compensation dress The structure chart set.As shown in Fig. 2, the present embodiment provides a kind of mixed gas filling error compensation dresses suitable for mass flow mixing method It sets, including：
Surge tank 100 is mixed, two inlet channels for being respectively used to be passed through first gas and second gas are provided with, it is described First flow controller 210 and second flow controller 220 are respectively arranged on two inlet channels；The mixing surge tank 100 are additionally provided with exhaust passage, are connected to by supercharging device 300 with high-tension switch gear 900；
Pressure sensor 400, for obtaining pressure in the high-tension switch gear 900；
Gas purity test device 500, for obtaining the concentration of first gas in the high-tension switch gear 900；
Control system 600 is passed with the first flow controller 210, the second flow controller 220, the pressure Sensor 400 and 500 signal of gas purity test device connection；
The control system 600 can fill calibration phase to the first flow controller 210 and the second Amount controller 220 sends first control signal so that the first flow controller 210 and the second flow controller 220 The first gas and the second gas are filled with first gas aimed concn C to described mixed according to the first control signal It closes after surge tank 100 mixes and injects high-tension switch gear 900, until being set from the high-voltage switch gear that the pressure sensor 400 is got Pressure reaches preset filling calibration phase goal pressure P in standby 9000；And institute is obtained from the gas purity test device 500 State the measured concentration C of the first gas in high-tension switch gear 9000；
The control system 600 can also fill concentration according to the first gas of compensated stage in compensated stage and filling is repaired Positive coefficient k sends second control signal so that described to the first flow controller 210 and the second flow controller 220 First flow controller 210 and the second flow controller 220 according to the second control signal by the first gas and The second gas injects high-tension switch gear 900 after filling to the mixing surge tank 100 mixing, until from the pressure sensing Pressure reaches filling terminal pressure P in the high-tension switch gear 900 that device 400 is got, wherein the filling correction factor k is root According to the measured concentration C0And the aimed concn C acquisition, the first gas filling concentration of the compensated stage is according to institute State measured concentration C0, the aimed concn C, the filling calibration phase goal pressure P0And filling terminal pressure P acquisition.
In the present embodiment, the first gas can be SF6Gas, the second gas can be N2Gas or CF4Gas Body.Certainly, device provided in this embodiment can also be applied to fill other mixed gas.In the present embodiment, control system 600 Believe with first flow controller 210, second flow controller 220, pressure sensor 400 and gas purity test device 500 Number connection, can be wired connection can also be wireless connection.
Wherein, gas purity test device 500 is set in high-tension switch gear 900, and gas purity test device 500 Be provided with wireless communication module, built-in rechargeable battery is compact, light-weight, can independence and freedom be set to location to be checked It sets, controls measurement process by wireless communication, without being limited by distance, measurement accuracy fast and stable, and convenient for guaranteeing high pressure The air-tightness of switchgear 900.
More specifically, control system 600 includes communication component, processor and memory；Wherein communication component be used for The first flow controller, the second flow controller, the pressure sensor and the gas purity test device Signal connection, and the first control is sent to the first flow controller and the second flow controller in filling calibration phase Signal, from the high-tension switch gear that the pressure sensor is got pressure to judge whether to reach preset filling correction rank Section goal pressure P0And the actual measurement of the first gas in the high-tension switch gear is obtained from the gas purity test device Concentration C0, communication component is also used to send the to the first flow controller and the second flow controller in compensated stage Two control signals, from the high-tension switch gear that the pressure sensor is got pressure with judge whether to reach filling terminal pressure Power P, processor are used for according to the measured concentration C0And the aimed concn C obtains filling correction factor k, and according to described Measured concentration C0, the aimed concn C, the filling calibration phase goal pressure P0And filling terminal pressure P determines compensated stage First gas fill concentration, additionally for generating first control signal and second control signal.Memory is for storing State computer program performed by control system.
Wherein, between communication component and other equipment wired or wireless way communication, such as based on the wireless of communication standard Network is based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band (UWB) technology, bluetooth (BT) near-field communication of technology.Processor can be application specific integrated circuit (ASIC), digital signal processor (DSP), number Word signal handling equipment (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), microprocessor or its He realizes electronic component.Memory can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and light data and deposit Store up equipment etc..
Mixed gas filling error-compensating apparatus provided by the embodiment of the utility model suitable for mass flow mixing method can be with Specifically for realizing the process of embodiment of the method provided by above-mentioned Fig. 1, details are not described herein again for concrete function.
Further, as shown in figure 3, on the basis of the above embodiments, described device may also include：Constant temperature heating device 710 and 720, it is connect with 600 signal of control system, the constant temperature heating device 710 and 720 is respectively arranged at described first Before flow controller 210 and second flow controller 220, make the first gas and the second gas respectively through the constant temperature Heating device 710 and 720 enters the first flow controller 210 and second flow controller 220 after being heated to temperature identical.
First flow controller 210 and second flow controller are passed through in first gas and second gas in the present embodiment It is identical to temperature that heated at constant temperature carried out by constant temperature heating device 710 and 720 pair first gas and second gas before 220, makes the The temperature of one gas and second gas is kept constant, and so as to reduce the filling error of temperature generation, is also convenient for filling process In stability contorting.Further, since first gas and second gas can as shown in Figure 3 be released liquefied gas decompression by gas cylinder etc. It puts and is provided after being converted into gaseous state, constant temperature heating device 710 and 720 can be converted into gas process by liquid in gas and provide heat Amount avoids to make liquid that can not be converted into gaseous state when the shortage of heat that environment provides, so that liquid gas passes through inlet channel Into flow controller, flow controller damage is caused to cause bigger filling error.Constant temperature heating device can in the present embodiment To be respectively provided with one on the inlet channel of each gas in such as Fig. 3, it can also only be arranged one simultaneously to first gas and second Gas carries out heated at constant temperature.
Further, described device may also include：Temperature sensor is connect, for examining with 600 signal of control system The temperature for the first gas for entering the constant temperature heating device 710 and 720 and the temperature of the second gas are surveyed, and is sent To the control system 600, so that the control system 600 is according to the temperature of the first gas and the temperature of the second gas It spends to the constant temperature heating device 710 and 720 and sends thermal control signals.
In the present embodiment, the temperature of first gas and second gas is detected by temperature sensor and is sent to control system 600, control system 600 judges whether to reach preset temperature value (such as 20 DEG C), if not up to, generating thermal control signals, And it is sent to constant temperature heating device 710 and 720, so that constant temperature heating device 710 and 720 is according to thermal control signals to the first gas Body and second gas are heated, and both ensure that the consistency of intake air temperature, keep flow control more accurate, reduce filling error, Can prevent again at low ambient temperatures liquefied gas can not gasify, cause flow controller to damage, ensure that the normal work of equipment Make, keeps the use environment of the device of the present embodiment more adaptable.
In a specific example, the constant temperature heating device 710 and 720 is gas hot filtration apparatus, while heating Moisture in gas is adsorbed, moisture is avoided to enter in high-tension switch gear 900, is caused in high-tension switch gear 900 The failure of Mixed gas insulation effect.
Mixed gas filling error compensation provided in this embodiment suitable for mass flow mixing method is set, by will entirely fill Process is divided into filling two stages of calibration phase and compensated stage, in filling calibration phase with first gas aimed concn C filling Into high-tension switch gear 900, pressure reaches preset filling calibration phase goal pressure P0And obtain high-tension switch gear 900 The measured concentration C of interior first gas0, according to measured concentration C0And aimed concn C obtains filling correction factor k, and in compensation rank Section determines that the first gas of compensated stage fills concentration, and by controlling first gas and the second gas after filling correction factor k amendment Body mixture ratio reaches filling terminal pressure P until being filled into pressure in high-tension switch gear 900.Method provided in this embodiment By obtaining the measured concentration of the first gas in high-tension switch gear 900 in filling calibration phase to obtain filling amendment system Number is modified in compensated stage with filling correction factor to filling concentration to reduce the error of compensated stage generation, and to filling It fills the concentration difference generated in calibration phase to compensate, so that the concentration energy of the first gas in high-tension switch gear 900 It is enough closer to aimed concn, environment temperature, pressure and other factors in filling process is eliminated and causes error, improve filling Accuracy.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into Row combination and combination.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand：It is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of mixed gas suitable for mass flow mixing method fills error-compensating apparatus, which is characterized in that including：
Mix surge tank, be provided with two inlet channels for being respectively used to be passed through first gas and second gas, it is described two into First flow controller and second flow controller are respectively arranged on gas channel；It is logical that the mixing surge tank is additionally provided with exhaust Road is connected to by supercharging device with high-tension switch gear；
Pressure sensor, for obtaining pressure in the high-tension switch gear；
Gas purity test device, for obtaining the concentration of first gas in the high-tension switch gear；
Control system, with the first flow controller, the second flow controller, the pressure sensor and the gas The connection of body purity test device signal；
The control system can be sent out in filling calibration phase to the first flow controller and the second flow controller First control signal is sent so that the first flow controller and the second flow controller are according to the first control signal It is injected after the first gas and the second gas are filled with first gas aimed concn C to mixing surge tank mixing High-tension switch gear, until pressure reaches preset filling correction rank from the high-tension switch gear that the pressure sensor is got Section goal pressure P0；And the actual measurement that first gas in the high-tension switch gear is obtained from the gas purity test device is dense Spend C0；
The control system can also fill concentration and filling correction factor k according to the first gas of compensated stage in compensated stage Second control signal is sent to the first flow controller and the second flow controller so that the first flow controls Device and the second flow controller according to the second control signal by the first gas and the second gas fill to High-tension switch gear is injected after the mixing surge tank mixing, until from the high-tension switch gear that the pressure sensor is got Pressure reaches filling terminal pressure P, wherein the filling correction factor k is according to the measured concentration C0And the aimed concn What C was obtained, the first gas filling concentration of the compensated stage is according to the measured concentration C0, it is the aimed concn C, described Fill calibration phase goal pressure P0And filling terminal pressure P acquisition.
2. the apparatus according to claim 1, which is characterized in that further include：
Constant temperature heating device is connect with the control system signal, and the constant temperature heating device is set to the first flow control Before device processed and second flow controller, heat the first gas and the second gas through the constant temperature heating device respectively It is identical rear into the first flow controller and second flow controller to temperature.
3. the apparatus of claim 2, which is characterized in that further include：
Temperature sensor is connect with the control system signal, for detecting described first into the constant temperature heating device The temperature of the temperature of gas and the second gas, and it is sent to the control system, so that the control system is according to The temperature of the temperature of first gas and the second gas sends thermal control signals to the constant temperature heating device.
4. the apparatus according to claim 1, which is characterized in that the control system includes communication component, processor and deposits Reservoir；
The communication component and the first flow controller, the second flow controller, the pressure sensor and institute State the connection of gas purity test device signal.
5. device according to claim 4, which is characterized in that the communication component is wireless communication components.
6. device according to claim 5, which is characterized in that the gas purity test device is set to the height and presses off It closes in equipment, and the gas purity test device is provided with wireless communication module, is wirelessly connected with the communication component.
7. device according to claim 6, which is characterized in that the gas purity test device is additionally provided with chargeable electricity Pond, for powering to the gas purity test device.
8. the apparatus of claim 2, which is characterized in that the constant temperature heating device is gas hot filtration apparatus.
9. device according to claim 1-8, which is characterized in that the first gas is SF6Gas, described Two gases are N2Gas or CF4Gas.
10. device according to claim 9, which is characterized in that further include：
Be loaded with two gas cylinders of the first gas and the second gas respectively, described two gas cylinders respectively with described in one into The connection of gas channel.
CN201820656841.1U 2018-01-09 2018-05-03 Mixed gas suitable for mass flow mixing method fills error-compensating apparatus Expired - Fee Related CN208169990U (en)

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US8950419B2 (en) * 2012-02-16 2015-02-10 Praxair Technology, Inc. Hydrogen supply method and system
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CN113110629B (en) * 2021-04-13 2022-05-17 中国农业大学 Aquatic product microenvironment gas regulation and control method, system and device
CN113501485A (en) * 2021-06-29 2021-10-15 浙江中控技术股份有限公司 Batch controller for preventing excessive filling of liquid hazardous chemical substances

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