CN113175619A - Method and device for monitoring residual quantity of filling liquefied gas - Google Patents
Method and device for monitoring residual quantity of filling liquefied gas Download PDFInfo
- Publication number
- CN113175619A CN113175619A CN202110571714.8A CN202110571714A CN113175619A CN 113175619 A CN113175619 A CN 113175619A CN 202110571714 A CN202110571714 A CN 202110571714A CN 113175619 A CN113175619 A CN 113175619A
- Authority
- CN
- China
- Prior art keywords
- liquefied gas
- propane
- gas
- tank
- butane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 113
- 239000007789 gas Substances 0.000 claims description 106
- 239000001294 propane Substances 0.000 claims description 59
- 239000001273 butane Substances 0.000 claims description 40
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 40
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 28
- 229920006395 saturated elastomer Polymers 0.000 claims description 22
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 230000000704 physical effect Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000009924 canning Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- HOWJQLVNDUGZBI-UHFFFAOYSA-N butane;propane Chemical compound CCC.CCCC HOWJQLVNDUGZBI-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
Classifications
-
- 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
- F17C3/00—Vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- 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
- F17C2205/0323—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- 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
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
-
- 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
- F17C2250/04—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
- F17C2270/00—Applications
- F17C2270/07—Applications for household use
Abstract
The invention provides a method and a device for monitoring the residual amount of filled liquefied gas, which are provided with a tank and a gas transmission pipe, wherein the tank is provided with an angle valve, the angle valve is connected with a signal acquisition unit, and the signal acquisition unit is used for acquiring the pressure and the temperature of the liquefied gas in the tank. The technical problem that a user cannot visually judge the gas amount in the tank in the use process of the existing liquefied gas, and inconvenience is brought to use is solved. The invention can be widely applied to the residual monitoring of the filling liquefied gas.
Description
Technical Field
The invention relates to a liquefied gas monitoring method and a device thereof, in particular to a method and a device for monitoring the residual quantity of a filled liquefied gas.
Background
Along with social development, liquefied gas has been widely used in industrial production and resident's life, generally adopts the mode of filling to use, needs the time of using by the merchant distribution, according to canning price collection money, the user is difficult to judge the true content of jar interior liquefied gas, easily eats the loss to, in the use of canning liquefied gas, can only discover that jar interior tolerance is not enough through the obvious reduction of firepower, need the gas filling, can't make the judgement in advance, influence the use.
The utility model discloses a "liquefied gas surplus real time monitoring device" (application number 201821306202.9, grant notice number CN208588456U), a controlling means who is equipped with weighing sensor through installing one set on the base is disclosed, put liquefied gas jar on the base, mode through weighing sensor measured weight data, then with data transmission display module demonstration on the controller, the actual liquefied gas volume of clear demonstration, simultaneously for the convenience of visualization and convenience, at wall mounting liquid crystal display device, surplus alarm device and automatic signalling device, in time remind resident surplus liquefied gas not enough and contact the person of delivering gas and send liquefied gas. When the air supplier puts a new air supply tank on the base of the device, the weighing sensor measures the weight data to prevent the bad merchants from falsifying. Although the problems in daily life of users are solved by the above mode, the device has high cost, complex installation, difficult adoption by common users and low popularization rate.
Disclosure of Invention
The invention provides a method and a device for monitoring the residual amount of filled liquefied gas, which can intuitively judge the content of the liquefied gas in a liquefied gas tank, have low cost and convenient use and aim at solving the technical problem that the use of the existing liquefied gas is inconvenient because a user cannot intuitively judge the gas amount in the tank in the use process.
Therefore, the technical scheme of the invention is that the device for monitoring the residual amount of the filled liquefied gas is provided with a tank and a gas conveying pipe, wherein an angle valve is arranged on the tank, a signal acquisition unit is connected to the angle valve, and the signal acquisition unit is used for acquiring the pressure and the temperature of the liquefied gas in the tank.
Preferably, the signal acquisition unit is mounted on the angle valve.
Preferably, the air pipe is provided with a pressure regulating valve, and the signal acquisition unit is arranged on the air pipe between the angle valve and the pressure regulating valve.
Preferably, the signal acquisition unit adopts a temperature sensor and a pressure sensor, or adopts a pressure sensor capable of measuring temperature.
A method for monitoring the residual quantity of a filling liquefied gas comprises the following specific steps:
(1) after the tank filled with liquefied gas is stably installed, the temperature T of the liquefied gas in the tank is measured by the information acquisition unitMeasuringAnd pressure PMeasuring；
(2) According to the temperature T of the liquefied gasMeasuringAnd pressure PMeasuringDetermining the ratio of propane to butane in the liquefied gas;
(3) and setting a margin alarm prompt according to the proportion of the propane in the liquefied gas.
Preferably, in the step (2), the temperature T of the liquefied gas is determined according to the temperature of the liquefied gasMeasuringAnd pressure PMeasuringDetermining the ratio of propane to butane in the liquefied gas, specifically: the relation between the saturated vapor pressure of the liquefied petroleum gas and the temperature is obtained by looking up a table.
Preferably, in the step (2), the temperature T of the liquefied gas is determined according to the temperature of the liquefied gasMeasuringAnd pressure PMeasuringThe specific method for determining the ratio of propane to butane in the liquefied gas comprises the following steps: respectively calculating saturated steam values P of pure propane and pure butane according to an antoin equationPropaneAnd PButaneThe propane ratio is deduced from the data, and the calculation formula of the propane ratio is as follows:
the butane ratio is calculated as follows:
preferably, the formula for calculating the saturated vapor value of pure propane and pure butane according to the antoin equation is:
lgP＝A-B/(T+C)
a, B, C is a physical property constant, and different substances correspond to different values of A, B, C;
p is the saturated vapor pressure of the pure liquid corresponding to the temperature T and the millimeter mercury column;
t-degree centigrade, DEG C.
Preferably, in the step (3), the remaining amount alarm prompt is set according to the proportion of propane in the liquefied gas, specifically:
if the initial percentage of propane is more than or equal to 95% after the tank is stably installed, judging that the gas in the tank is commodity propane, and when the percentage of propane is monitored to be less than 50%, starting to alarm that the margin is insufficient to remind of timely filling;
if the initial percentage of propane measured after the tank is stably installed is less than 95% and more than 5%, determining that the gas in the tank is a mixed gas of propane and butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference value is less than 2kpa, the alarm is started to give an alarm of insufficient margin, and prompt the timely filling is carried out;
if the initial percentage of propane measured after the tank is stably installed is less than or equal to 5%, determining that the gas in the tank is commodity butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference value is less than 2kpa, the alarm is started to alarm that the allowance is insufficient, and the filling is reminded in time.
Preferably, the mode of insufficient alarm margin can be that the controller transmits the data collected by the signal collection unit to the background, and the data is transmitted to the client or the gas supplier by the background for gas distribution.
The beneficial effects of the invention are that,
(1) the proportion of the gas which is not communicated in the tank is calculated by monitoring the pressure and the temperature of the liquefied gas in the tank and combining the saturated vapor pressures of different gases, and different alarm values are set according to the proportion condition, so that a user can be reminded of supplementing the liquefied gas more accurately without waste;
(2) the occupation ratio of propane and butane in the liquefied gas can be obtained by looking up a table according to the monitored pressure and temperature, so that the method is convenient and quick; the method can also be obtained by calculation through an antoin equation, and is more accurate;
(3) this application technical scheme simple structure, the transformation cost is lower, has avoided because the not enough condition that influences the use of jar interior liquefied gas volume, can also accurately detect the volume of jar interior liquefied gas in the filling back, adopts the cost in polar region to fully ensure user's interests.
Drawings
FIG. 1 is a schematic layout of an embodiment of the present invention.
The symbols in the drawings illustrate that:
1. a tank; 2. an angle valve; 3. a signal acquisition unit; 4. a pressure regulating valve; 5. a gas stove is provided.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1, the device for monitoring the residual amount of the filled liquefied gas is provided with a tank 1 and a gas pipe, wherein one end of the gas pipe is connected with the tank 1, and the other end of the gas pipe is connected with a gas stove 5. Be equipped with air-vent valve 4 on the gas-supply pipe, be equipped with angle valve 2 on jar 1, angle valve 2 goes up direct or indirect connection signal acquisition unit 3, signal acquisition unit 3 adopts temperature sensor and pressure sensor, also can adopt the pressure sensor of measurable quantity temperature, a pressure and the temperature for gather liquefied gas in jar 1, signal acquisition unit 3 can the direct mount on angle valve 2, also can establish on the gas-supply pipe between angle valve 2 and air-vent valve 4, signal acquisition unit 3 is last can also connect the controller, realize the transmission control of signal.
According to the national standard (GB 11174-2011), the composition and volatility of liquefied petroleum gas are divided into 3 varieties, namely, commodity propane (used when high volatility is required), commodity butane (used when low volatility is required), commodity propane-butane mixture (used when medium volatility is required), and liquefied petroleum gas with different mixing ratios has fixed saturated vapor pressure at a certain temperature. If the temperature and saturated vapor pressure of the medium can be measured, the ratio of propane in the mixed medium can be obtained.
A method for monitoring the residual quantity of a filling liquefied gas comprises the following specific steps:
(1) after the tank 1 filled with liquefied gas is installed, the temperature T of the liquefied gas in the tank 1 is measured by the information acquisition unit 3 after the temperature of the liquefied gas in the tank 1 and the outside reach a relative balance stateMeasuringAnd pressure PMeasuring；
(2) According to the temperature of the liquefied gasDegree TMeasuringAnd pressure PMeasuringDetermining the ratio of propane to butane in the liquefied gas, and looking up a table to obtain the ratio by using a liquefied petroleum gas saturated vapor pressure and temperature relation comparison table, wherein the table is detailed in a table 1; the saturated vapor value P of pure propane and pure butane can be respectively calculated by the Antorin equationPropaneAnd PButaneThe Antoine equation is derived from engineering empirical summary and is applicable to most compounds and is given by the following formula:
lgP＝A-B/(T+C) (1)
a, B, C is a physical property constant, and different substances correspond to different values of A, B, C;
p is the saturated vapor pressure of the pure liquid corresponding to the temperature T and the millimeter mercury column;
t-degree centigrade, DEG C.
The data A, B, C related to physical properties can be obtained from a table of vapor pressure constants of different substances at different temperatures calculated by the Antoine formula, and specific data of propane and butane are as follows:
| chemical substance | A | B | C |
| Propane | 6.83 | 813.2 | 248.0 |
| Butane | 6.83 | 945.9 | 240.0 |
Substituting into the formula (1) can obtain
Propane: lgPPropane＝6.83-813.2/(T+248) (2)
Butane: lgPButane＝6.83-945.9/(T+240) (3)
In the process of using the liquefied gas, propane is firstly gasified, and butane is gradually gasified along with the continuous reduction of propane.
Saturated vapor number P from pure propane and pure butanePropaneAnd PButaneDeducing the proportion of propane:
the calculation formula of the propane ratio is as follows:
the butane ratio is calculated as follows:
(3) according to the proportion of propane in liquefied gas, a margin alarm prompt is set, and the method specifically comprises the following steps:
if the initial percentage of propane measured after the tank 1 is stably installed is greater than or equal to 95%, determining that the gas in the tank 1 is commodity propane, and when the percentage of propane monitored is less than 50%, starting to alarm that the residual quantity is insufficient to remind to fill in time;
if the initial percentage of propane measured after the tank 1 is stably installed is less than 95% and more than 5%, determining that the gas in the tank 1 is a mixed gas of propane and butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference of (a) is less than 2kpa,alarming for insufficient allowance is started, and timely filling is reminded;
if the initial percentage of propane measured after the tank 1 is stably installed is less than or equal to 5%, determining that the gas in the tank 1 is commodity butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference value is less than 2kpa, the alarm is started to alarm that the allowance is insufficient, and the filling is reminded in time.
When the angle valve 2 on the tank 1 is opened to start gas utilization, the temperature measured by the signal acquisition unit 3 is reduced under the influence of the scorched soup effect, and when the temperature is reduced for a short time by a certain threshold value, the gas utilization is judged to start; the propane ratio obtained at this time is larger than the actual propane ratio, and in this case, the temperature before the decrease and the maximum pressure in each 2 minutes before and after the decrease are used as reference values, and the propane ratio in the medium in the bottle at this time can be obtained by looking up a table.
In addition, signal acquisition unit 3 also can be connected with the controller to upload relevant alarm information to the platform, the cooperation uses the thing networking, conveys the customer end or gas supplier by the backstage and carries out the gas delivery, effectively improves gas supplier's delivery efficiency.
The proportion of the dead gas in the tank 1 is calculated by monitoring the pressure and the temperature of the liquefied gas in the tank 1 and combining the saturated vapor pressures of different gases, different alarm values are set according to the proportion, a user can be reminded of supplementing the liquefied gas more accurately, and waste is avoided; the occupation ratio of propane and butane in the liquefied gas can be obtained by looking up a table according to the monitored pressure and temperature, so that the method is convenient and quick; the method can also be obtained by calculation through an antoin equation, and is more accurate; this application technical scheme simple structure, it is lower to reform transform the cost, has avoided because the not enough condition that influences the use of jar internal liquefied gas volume in 1, can also accurately detect the volume of jar internal liquefied gas behind the filling, adopts the cost in polar region to fully ensure user's interests.
TABLE 1
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The device for monitoring the residual amount of the filled liquefied gas is characterized by being provided with a tank and a gas conveying pipe, wherein an angle valve is arranged on the tank, a signal acquisition unit is connected onto the angle valve, and the signal acquisition unit is used for acquiring the pressure and the temperature of the liquefied gas in the tank.
2. The apparatus for monitoring the level of a liquefied gas filled according to claim 1, wherein the signal acquisition unit is provided on the angle valve.
3. The device for monitoring the residual amount of filled liquefied gas as claimed in claim 1, wherein a pressure regulating valve is provided on the gas pipe, and the signal acquisition unit is provided on the gas pipe between the angle valve and the pressure regulating valve.
4. The apparatus for monitoring the level of a liquefied gas filled in a tank as claimed in claim 1, wherein the signal acquisition unit employs a temperature sensor and a pressure sensor, or a pressure sensor capable of measuring temperature.
5. A method of monitoring the level of a liquefied gas filling using the device according to any of claims 1 to 4, characterized by the specific steps of:
(1) after the tank filled with liquefied gas is stably installed, the temperature T of the liquefied gas in the tank is measured by the information acquisition unitMeasuringAnd pressure PMeasuring；
(2) According to the temperature T of the liquefied gasMeasuringAnd pressure PMeasuringDetermining liquefied gasThe ratio of propane to butane is medium;
(3) and setting a margin alarm prompt according to the proportion of the propane in the liquefied gas.
6. The method for monitoring the residual amount of liquefied gas filled according to claim 5, wherein in the step (2), the temperature T of the liquefied gas is determined according to the temperatureMeasuringAnd pressure PMeasuringDetermining the ratio of propane to butane in the liquefied gas, specifically: the relation between the saturated vapor pressure of the liquefied petroleum gas and the temperature is obtained by looking up a table.
7. The method for monitoring the residual amount of liquefied gas filled according to claim 5, wherein in the step (2), the temperature T of the liquefied gas is determined according to the temperatureMeasuringAnd pressure PMeasuringThe specific method for determining the ratio of propane to butane in the liquefied gas comprises the following steps: respectively calculating saturated steam values P of pure propane and pure butane according to an antoin equationPropaneAnd PButaneThe propane ratio is deduced from the data, and the calculation formula of the propane ratio is as follows:
the butane ratio is calculated as follows:
8. the method of monitoring the level of a liquefied gas filled according to claim 7, wherein the formula for calculating the saturated vapor values of pure propane and pure butane according to the anton equation is:
lgP＝A-B/(T+C)
a, B, C is a physical property constant, and different substances correspond to different values of A, B, C;
p is the saturated vapor pressure of the pure liquid corresponding to the temperature T and the millimeter mercury column;
t-degree centigrade, DEG C.
9. The method for monitoring the residual amount of the liquefied gas for filling according to claim 5, wherein in the step (3), the residual amount alarm prompt is set according to the proportion of propane in the liquefied gas, and specifically comprises the following steps:
if the initial percentage of propane is more than or equal to 95% after the tank is stably installed, judging that the gas in the tank is commodity propane, and when the percentage of propane is monitored to be less than 50%, starting to alarm that the margin is insufficient to remind of timely filling;
if the initial percentage of propane measured after the tank is stably installed is less than 95% and more than 5%, determining that the gas in the tank is a mixed gas of propane and butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference value is less than 2kpa, the alarm is started to give an alarm of insufficient margin, and prompt the timely filling is carried out;
if the initial percentage of propane measured after the tank is stably installed is less than or equal to 5%, determining that the gas in the tank is commodity butane, and setting when a saturated steam pressure value P is monitoredButaneAnd the measured pressure value PMeasuringWhen the difference value is less than 2kpa, the alarm is started to alarm that the allowance is insufficient, and the filling is reminded in time.
10. The method of claim 5, wherein the alarm of the insufficient gas level is performed by a controller to transmit the data collected by the signal collection unit to a background, and the data is transmitted from the background to a client or a gas supplier for gas distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110571714.8A CN113175619A (en) | 2021-05-25 | 2021-05-25 | Method and device for monitoring residual quantity of filling liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110571714.8A CN113175619A (en) | 2021-05-25 | 2021-05-25 | Method and device for monitoring residual quantity of filling liquefied gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113175619A true CN113175619A (en) | 2021-07-27 |
Family
ID=76928206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110571714.8A Pending CN113175619A (en) | 2021-05-25 | 2021-05-25 | Method and device for monitoring residual quantity of filling liquefied gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113175619A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073081A (en) * | 1996-12-19 | 2000-06-06 | Messer Griesheim Gmbh | Method and device for monitoring the filling of a cryotank |
| CN101706303A (en) * | 2009-11-03 | 2010-05-12 | 厦门大学 | Real-time detection method of dynamic liquid amount in closed body |
| CN204649219U (en) * | 2015-02-11 | 2015-09-16 | 刘易 | Gas, liquid gas supply and memory state surveillance |
| CN105822900A (en) * | 2016-05-16 | 2016-08-03 | 深圳市齐伟达电子有限公司 | System for monitoring amount of residual liquefied gas in gas cylinder |
| CN207421781U (en) * | 2017-10-26 | 2018-05-29 | 广东寰球广业工程有限公司 | Defeated system outside a kind of gasification of liquefied natural gas receiving station |
| CN207648446U (en) * | 2017-11-10 | 2018-07-24 | 广东铸辉钢瓶制造有限公司 | A kind of gas tank monitoring gas volume |
| CN109074241A (en) * | 2016-03-21 | 2018-12-21 | 恩威罗菲特国际股份有限公司 | LPG supply method and system |
| US20200203703A1 (en) * | 2019-10-07 | 2020-06-25 | South 8 Technologies, Inc. | Method and apparatus for liquefied gas solvent delivery for electrochemical devices |
-
2021
- 2021-05-25 CN CN202110571714.8A patent/CN113175619A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6073081A (en) * | 1996-12-19 | 2000-06-06 | Messer Griesheim Gmbh | Method and device for monitoring the filling of a cryotank |
| CN101706303A (en) * | 2009-11-03 | 2010-05-12 | 厦门大学 | Real-time detection method of dynamic liquid amount in closed body |
| CN204649219U (en) * | 2015-02-11 | 2015-09-16 | 刘易 | Gas, liquid gas supply and memory state surveillance |
| CN109074241A (en) * | 2016-03-21 | 2018-12-21 | 恩威罗菲特国际股份有限公司 | LPG supply method and system |
| CN105822900A (en) * | 2016-05-16 | 2016-08-03 | 深圳市齐伟达电子有限公司 | System for monitoring amount of residual liquefied gas in gas cylinder |
| CN207421781U (en) * | 2017-10-26 | 2018-05-29 | 广东寰球广业工程有限公司 | Defeated system outside a kind of gasification of liquefied natural gas receiving station |
| CN207648446U (en) * | 2017-11-10 | 2018-07-24 | 广东铸辉钢瓶制造有限公司 | A kind of gas tank monitoring gas volume |
| US20200203703A1 (en) * | 2019-10-07 | 2020-06-25 | South 8 Technologies, Inc. | Method and apparatus for liquefied gas solvent delivery for electrochemical devices |
Non-Patent Citations (1)
| Title |
|---|
| 陈敏恒等: "《化工原理》", 31 August 2013, 华东理工大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2358583C (en) | A method for filling a vehicle fuel tank with gas | |
| US4611294A (en) | Method of and apparatus for monitoring odorizer performance | |
| US10428289B2 (en) | Methods for making and distributing batches of butane-enriched gasoline | |
| EP3719383B1 (en) | Pumpless fluid dispenser | |
| US9267645B2 (en) | Pumpless fluid dispenser | |
| CN102985352A (en) | Volumetric measurement of beverage | |
| WO2018218869A1 (en) | Intelligent fully automatic medicated wine production method | |
| CA2834451C (en) | Metering system and method for cryogenic liquids | |
| US11592430B2 (en) | Method for estimating a combustion characteristic of a gas that may contain dihydrogen | |
| CN106123984A (en) | Hydrogen Fuel-cell Vehicles hydrogen-consuming volume real-time displaying device and detection method thereof | |
| CN113175619A (en) | Method and device for monitoring residual quantity of filling liquefied gas | |
| WO2005114113A2 (en) | Method and device for measuring the volume of air space in a container | |
| KR101639033B1 (en) | Temperature and Volume Measuring System of Fuel Tank at Vehicle by using Gas Pump | |
| CN105782716A (en) | Liquid density measurement method applied to LNG storage tank | |
| CN212458421U (en) | Temperature and pressure integrated transmitter constant-temperature online calibration device | |
| CN110077746B (en) | Liquid storage tank pressure maintaining device and method | |
| CN111380710A (en) | Organic liquid extinguishing agent extinguishing concentration test device and method | |
| CN220026949U (en) | Small batch metering and filling device for triisobutyl aluminum | |
| CN219002967U (en) | Defoaming agent configuration device | |
| EP3395752A1 (en) | Beer mixing system | |
| KR101663541B1 (en) | Temperature and Revised Volume Measuring System of Fuel Tank at Vehicle | |
| CN217490791U (en) | Batching system with accurate metering | |
| CN208775050U (en) | A kind of remote control type barreled hydrogen peroxide filling apparatus | |
| RU9007U1 (en) | SETTING REAGENT DOSAGE | |
| RU67939U1 (en) | DEVELOPMENT OF AUTOMATIC CORRECTION OF OIL PRODUCT VOLUME |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210727 |