CN112393841A - Double-scale pressure gauge for a pressurized fluid container - Google Patents
Double-scale pressure gauge for a pressurized fluid container Download PDFInfo
- Publication number
- CN112393841A CN112393841A CN202010830118.2A CN202010830118A CN112393841A CN 112393841 A CN112393841 A CN 112393841A CN 202010830118 A CN202010830118 A CN 202010830118A CN 112393841 A CN112393841 A CN 112393841A
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- CN
- China
- Prior art keywords
- graduated scale
- gas
- dial
- pressure
- dispensing
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 71
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 229940075473 medical gases Drugs 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/04—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges
- G01L7/043—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges with mechanical transmitting or indicating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/08—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
- G01L7/084—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type with mechanical transmitting or indicating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L2019/0053—Pressure sensors associated with other sensors, e.g. for measuring acceleration, temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a pressure gauge (1) comprising a dial (4) and a pointer (6) movable in rotation with respect to said dial (4), the dial (4) comprising a first graduated scale (10) displaying a pressure value. The dial (4) comprises a second graduated scale (11) displaying the gas volume value. A container (15) for a pressurized fluid, such as a gas cylinder, is equipped with a gas dispensing valve (14) to which the pressure gauge (1) is attached, and to the use of the container for storing or dispensing a gas, in particular a medical gas. Furthermore, the invention relates to a valve for dispensing a fluid, an assembly for dispensing a fluid and the use of the assembly for dispensing a fluid for storing and/or dispensing a pressurized gas.
Description
Technical Field
The present invention relates to a pressure gauge comprising a double-scale dial providing an indication of both the pressure and the volume of a gas, and to a pressurised fluid container, such as a gas cylinder, fitted with a dispensing valve to which the pressure gauge is attached. The invention also relates to the use of a pressurised fluid container for storing or dispensing a gas, in particular a medical gas.
Background
Industrial and medical gases are packaged in gas containers (e.g., gas cylinders) equipped with gas distribution valves (also referred to as valve units). Such a valve may or may not be of the type incorporating a built-in regulator, i.e. may be a simple valve of the open/close type for controlling the flow of gas, or may be a valve incorporating a gas regulator, also known as a regulating valve, which is capable of controlling the flow and pressure of the gas being delivered.
In order to measure the pressure of the gas in the container and thus be able to determine whether any gas is still contained in the container, a pressure measuring device (typically a dial/dial gauge with a movable hand that can be turned) is usually fitted to the valve unit.
The dial pressure gauge comprises a dial with a pressure scale, i.e. a scale corresponding to the pressure value, on which a rotatable pointer rests under the action of the gas pressure to indicate the measured pressure value corresponding to the pressure of the gas in the container.
In particular, fluidtight pressure gauges make use of the elasticity of a metal component whose deformation caused by the pressurized fluid, for example the deflection of its diaphragm or the change in curvature of a wound tube such as a bourdon tube, allows an accurate and reliable determination of the applied pressure difference and thus of the pressure of the fluid.
Therefore, the user can find the gas pressure value by observing the pressure value corresponding to the scale indicated by the pointer, and thus estimate the remaining amount of gas in the container. Such ｃA pressure gauge is described in EP- ｃA-3176558.
Now, some users, in particular caregivers, are not used to the pressure value and/or are not adapted to estimate the amount of residual gas based on the pressure value, which leads to interpretation or estimation errors.
WO-A-2012/047862 is also known and discloses A device with A dial-type movable pointer indicator with two scales, which is capable of displaying both air pressure and time of use.
Furthermore, FR- A-3044406 proposes A pressure gauge system comprising A pressure gauge, A two-dimensional code (QR code) type mark, and A digital screen for autonomously displaying the time or the amount of gas calculated based on the pressure measurement value, the datA encoded in the QR code, and the pointer position read by A smartphone or the like.
Disclosure of Invention
In view of this, it is a problem to propose an improved gauge with a rotatable pointer avoiding such errors.
The solution of the invention is a pressure gauge comprising a dial comprising a first graduated scale having a pressure value and a pointer capable of moving in a rotary manner with respect to said dial, characterized in that said dial comprises a second graduated scale having a gas volume value, arranged in parallel with said first graduated scale, so as to position a movable pointer simultaneously opposite to said first and second graduated scales.
According to circumstances, the gauge of the invention may comprise one or more of the following technical features:
the pointer can rotate (i.e. pivot) around an axis.
The movable pointer changes angular position as it rotates and simultaneously indicates a pressure value on the first graduated scale and a corresponding volume value on the second graduated scale.
The overall shape of the first and second graduated scales is a circular arc.
The first graduated scale displays pressure values in bar or other units (e.g. psig or other units).
The first graduated scale has a pressure value of 0 to 300bar, preferably 0 to 250 bar, typically 0 to 200 bar.
The numbers on the first graduated scale are multiples of 25, such as 0, 25, 50, 75, 150 and 200.
The gas volume value of the second graduated scale is from 0 to 400L, preferably from 0 to 300L.
The second graduated scale displays in liters (L) or other units such as percentages (%) or Sm3Indicated volume values.
The number on the second graduated scale is a multiple of 50, e.g. 0, 50, 150, 300, 400 ….
The first graduated scale is positioned towards the centre of the dial and the second graduated scale is positioned towards the periphery of the dial, which means that the second graduated scale is sandwiched between the first graduated scale and the periphery of the dial.
The first and second graduated scales are engraved, printed, screen-printed or otherwise applied to the background of the dial.
The first and second graduated scales are separated from each other by a color band comprising a plurality of successive regions of different colors or different shades of colors, preferably green and red and/or different shades of these colors such as light green and dark green.
The background of the dial is light, in particular white.
The pointer is linear/elongated and dark, in particular black.
The pressure gauge comprises a housing, in which a dial and a pointer are arranged.
The case is closed by a transparent window positioned facing the dial.
The window section is made of glass or plastic (i.e. polymer).
The dial is circular.
The axis of rotation of the hands is (approximately) located in the centre of the dial.
The housing comprises a pressure-sensitive elastic inner mechanism cooperating with the rotationally movable pressure indicator.
The pressure-sensitive elastic internal mechanism is a bourdon tube or a diaphragm.
The housing has a circular cross section, i.e. it is cylindrical in its entirety.
The housing comprises a connecting end fitting for connection to a gas container, in particular a gas cylinder.
The connecting end fitting of the housing is threaded.
The housing is made of metal or polymer.
The invention also relates to a fluid dispensing valve for dispensing fluids, in particular gases, comprising a pressure gauge according to the invention, which is preferably a regulating valve for a fluid dispensing valve.
The invention also relates to a fluid dispensing assembly for dispensing a fluid, in particular a gas, comprising a gas container to which a fluid dispensing valve according to the invention is attached.
Preferably, the fluid dispensing valve is protected by a protective cover, in particular a rigid cover made of metal and/or polymer.
The fluid dispensing assembly according to the present invention may be used for storing and/or dispensing pressurized fluids, in particular gases, especially medical gases, in particular oxygen. The gas may be stored in the fluid dispensing assembly at pressures up to 350bar or more.
Drawings
The invention will now be better understood by means of the following detailed description, given by way of non-limiting illustration with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of one embodiment of a dial pressure gauge according to the present invention;
FIG. 2 is a face of the pressure gauge of FIG. 1; and
fig. 3 schematically shows a gas container with a gas distribution valve equipped with the pressure gauge of fig. 1.
Detailed Description
Fig. 1 is a schematic view of a gauge 1 that can be used to measure the pressure of a pressurized fluid, in particular a gas, such as pressurized oxygen, stored in a container such as a gas cylinder.
The pressure gauge 1 comprises a rigid casing 2, for example made of metal or polymer, the rigid casing 2 containing a pressure-sensitive elastic internal mechanism (not visible) cooperating with a pressure indicator, i.e. a pressure indicator usually an elongated pointer 6 movable in rotation about a rotation axis 7, usually located in the centre of a dial 4 in the form of a disc (i.e. with a circular periphery), having graduations 5, which dial, according to the invention, comprises a double (i.e. pressure and volume) measuring scale, as described below.
The dial 4 and the hands 6 are protected by a transparent window 8 covering them. The window 8 is attached to the housing 2. The window may be made of glass or of a polymer.
The background of the dial 4 is preferably light, in particular white, while the hands are dark, in particular black, in order to improve the visibility of the operator.
The measurement is performed at the end fitting 3. The elastic means sensitive to gas pressure are, for example, bourdon tubes or diaphragms. Elastic mechanisms of this type are commonly used in aneroid pressure gauges which utilize the elasticity of a metal component whose deformation caused by the pressurized fluid, for example the deflection of its diaphragm or the change in curvature of a wound tube such as a bourdon tube, allows the applied pressure difference, and thus the pressure of the fluid, to be determined accurately and reliably.
Typically, the pressure gauge 1 is attached, in particular by screwing, via a threaded attachment end fitting 3 carried by the housing 2, to a gas distribution valve 14, which gas distribution valve 14 may or may not have a built-in regulator, and which is itself mounted on a gas container 15, such as a gas cylinder, so as to be able to measure the pressure of the gas coming from the container and passing through the gas distribution valve, as shown in fig. 3.
Figure 2 schematically shows an embodiment of a dial 4 for a dual measuring scale pressure gauge 1 according to the invention. More specifically, the dial 4 comprises a first graduated scale 10 (in this case indicated in bars) having a pressure value and a second graduated scale 11 (in this case indicated in liters) having a gas volume value.
The second graduated scale 11 has the shape of a circular arc and is arranged parallel to the first graduated scale 10, the first graduated scale 10 also having the shape of a circular arc, so that the movable pointer 6 can be positioned simultaneously against said first and second graduated scales 10, 11, so as to indicate the air pressure (in bars) and its corresponding residual volume (in liters) by pointing it.
Assuming that the rotatable pointer 6 is positioned against the first and second graduated scales 10 and 11 by the gas pressure, the user can simultaneously read the gas pressure measured by the pressure gauge 1 and the residual amount or volume of gas in the gas cylinder (i.e., residual volume), etc., from the dial 4. This avoids any calculation error when the operator converts pressure to volume, as the two values are displayed in parallel.
In the embodiment shown, the first graduated scale 10 has in this case pressure values between 0 and 200bar, i.e. values of, for example, 0, 25bar, 50bar, 75bar, 150bar and 200bar, while the second graduated scale 11 has gas volume values between 0 and 400L, i.e. values of, for example, 0L, 50L, 150L, 300L, 400L. The first graduated scale 10 and the second graduated scale 11 are preferably related to the water content of the container in question.
The first graduated scale 10 is positioned towards the centre, i.e. towards the axis 7 of the dial 4, and the second graduated scale 11 is positioned towards the outer periphery 13 of the dial 4, which means that the second graduated scale 11 is sandwiched between the first graduated scale 10 and the outer periphery 13 of the dial 4.
Depending on the embodiment chosen, the first graduated scale 10 and the second graduated scale 11 may be engraved, printed, screen-printed or otherwise applied to the background of the dial 4.
In this case, the first graduated scale 10 and the second graduated scale 11 are separated from each other by a ribbon 12 comprising a plurality of successive zones 12a-12d of different colours or different shades of colour, so as to be able to provide the user with immediate and simple additional visual information about the condition of the gas container, i.e.: full or nearly full, nearly empty or about to empty.
For example, ribbon 12 includes four contiguous regions 12a-12d, including:
a greenish area 12b (i.e. 50L to 150L/25 to 75bar), indicating a container with a gas content of less than 50% of its maximum gas content;
a dark green zone 12c (i.e. 150L to 300L/75bar to 150bar), indicating a container with a gas content still greater than 50% (or above 50%) of its maximum gas content, in particular full or almost full; and
possibly white areas 12d (i.e. 300L to 400L/150bar to 200bar), which may correspond to portions not used in a given geographical location and/or in a particular application. This is because it is not always necessary to package more than 300L and/or more than 150bar of compressed gas.
Of course, other colors or shades may be selected and/or the color band 12 may be divided into more or less regions and/or the extent of the regions may also be different from that given here as an example, in particular wider or less wide.
Fig. 3 schematically shows a gas container 15 comprising a gas distribution valve 14, which gas distribution valve 14 is equipped with a pressure gauge 1 according to the invention, similar to the one shown in fig. 1, and with the dial 4 of fig. 2 on two scales.
In this case, the gas container 15 is a gas cylinder of overall cylindrical shape, for example made of steel or aluminium alloy, comprising a hollow internal volume in which the compressed gas is stored, typically at a pressure of up to 200 to 300 bar. The hollow interior volume may be up to 50L (in water equivalent), so that hundreds of litres of compressed gas may be stored therein. The gas cylinder comprises a neck 17 to which, by means of a threaded connection, a gas distribution valve 14, in particular with a built-in regulator, or regulating valve, is attached, the gas distribution valve being equipped with a pressure gauge 1 according to the invention, as shown in fig. 1 and 2.
Preferably, the gas distribution valve 14 is protected by a protective cover 16, in particular a rigid cover made of metal and/or made of polymer, which is arranged around said valve 14 to protect it from impacts, dirt, etc.
The gas distribution valve 14 includes an outlet coupling or end fitting 18 to allow gas to be supplied to a user. To this end, the user may connect the outlet connection or end fitting to a flexible tube that supplies a breathing interface (e.g., a mask or nasal tube) or a ventilator (e.g., a medical ventilator).
Such a gas container 15 is particularly suitable for packaging medical gases, i.e. gases of medical quality, in particular oxygen, air, N2O/O2，He/O2，NO/N2Or other mixtures. Thus, it can be used in a hospital environmentIn particular in emergency intervention units such as ambulances or any other medical structure.
Claims (10)
1. Pressure gauge (1) comprising a dial (4) and a movable pointer (6) able to move in rotation with respect to said dial (4), said dial (4) comprising a first graduated scale (10) displaying a pressure value, characterized in that said dial (4) comprises a second graduated scale (11) displaying a gas volume value, said second graduated scale (11) being arranged in parallel with said first graduated scale (10), so that said movable pointer (6) can be positioned simultaneously opposite to said first graduated scale (10) and said second graduated scale (11).
2. A gauge according to claim 1, characterized in that said movable pointer (6) changes angular position as it rotates and simultaneously indicates a pressure value on said first graduated scale (10) and a corresponding volume value on said second graduated scale (11).
3. A gauge according to any of the preceding claims, characterized in that said first graduated scale (10) and said second graduated scale (11) are entirely circular-arc shaped.
4. A gauge according to any of the preceding claims, wherein the first graduated scale (10) displays pressure values between 0 and 300 bar.
5. A gauge according to any of the preceding claims, characterized in that said second graduated scale (11) displays a gas volume value between 0 and 400L.
6. Pressure gauge according to any of the preceding claims, characterized in that it comprises a case (2) in which said dial (4) and said movable pointer (6) are arranged, said case (2) being closed by a transparent window (8) positioned facing said dial (4).
7. Valve (14) for dispensing a fluid, in particular a gas, comprising a pressure gauge (1) according to any one of the preceding claims.
8. Valve (14) for dispensing fluids according to claim 7, characterized in that it is a valve with built-in regulator (regulator valve).
9. Assembly (14, 15) for dispensing a fluid, in particular a gas, comprising a gas container (15) to which a valve (14) for dispensing a fluid according to claim 7 or 8 is attached.
10. Use of an assembly (14, 15) for dispensing a fluid according to claim 9 for storing and/or dispensing a pressurized gas, in particular oxygen, air, or N2O/O2、He/O2Or NO/N2And (3) mixing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1909268A FR3100063B1 (en) | 2019-08-19 | 2019-08-19 | Double scale manometer for pressurized fluid container |
| FR1909268 | 2019-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112393841A true CN112393841A (en) | 2021-02-23 |
Family
ID=68581991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010830118.2A Pending CN112393841A (en) | 2019-08-19 | 2020-08-18 | Double-scale pressure gauge for a pressurized fluid container |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112393841A (en) |
| FR (1) | FR3100063B1 (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB235155A (en) * | 1924-06-03 | 1925-08-20 | J.C. Eckardt Aktiengesellschaft | |
| GB267627A (en) * | 1925-12-22 | 1927-03-22 | British Launderers Res Ass | Improvements in bourdon pressure gauges |
| GB339264A (en) * | 1929-09-03 | 1930-12-03 | Humphrey Pendrell Smith | Improvements in or relating to pressure or volume gauges indicating pressure or volume in gas containers or cylinders |
| US4450721A (en) * | 1980-04-17 | 1984-05-29 | Energy Innovation Enterprises, Ltd. | Apparatus for indicating quantity of liquified gas contained in a storage container |
| KR19990039342A (en) * | 1997-11-12 | 1999-06-05 | 김덕중 | Mixed Instruments to Measure Pressure and Temperature |
| CN1732375A (en) * | 2002-11-25 | 2006-02-08 | 权宁斌 | Pressure-thermometer in same time |
| CA2684829A1 (en) * | 2009-11-06 | 2011-05-06 | Winners Products Engineering Ltd. | Gas cylinder residual gas volume indicator |
| WO2012047862A1 (en) * | 2010-10-04 | 2012-04-12 | Wilton Cahn Levine | Time remaining display assembly |
| CN203241190U (en) * | 2013-06-04 | 2013-10-16 | 安徽新力电业科技咨询有限责任公司 | Instrument pressure gauge capable of intuitively reading volume of gas in compressed gas cylinder |
| FR3016679A1 (en) * | 2014-01-22 | 2015-07-24 | Air Liquide | VALVE FOR PRESSURIZED FLUID BOTTLE AND CORRESPONDING BOTTLE |
| CN205262664U (en) * | 2016-01-03 | 2016-05-25 | 刘文霞 | Explosion -proof alarm pressure gauge of magnetic induction |
| CN205483391U (en) * | 2016-03-07 | 2016-08-17 | 无锡市凯丰压力表有限公司 | Mechanical type manometer |
| CN106289357A (en) * | 2015-06-25 | 2017-01-04 | Wika亚历山大·威甘德欧洲股份两合公司 | There is the measurement apparatus of the measured value output of expansion |
| FR3044406A1 (en) * | 2015-11-26 | 2017-06-02 | Air Liquide | OXYACETYLENE WORKING PLANT AND METHOD OF DETERMINING THE AUTONOMY OF SAID INSTALLATION |
| EP3176558A1 (en) * | 2015-12-03 | 2017-06-07 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Pressure gauge with bi-directional or distinctive marking affixed to the window thereof |
| CN106840506A (en) * | 2015-11-17 | 2017-06-13 | Wika亚历山大·威甘德欧洲股份两合公司 | Pressure-measuring system with the choke valve being automatically switched off |
-
2019
- 2019-08-19 FR FR1909268A patent/FR3100063B1/en active Active
-
2020
- 2020-08-18 CN CN202010830118.2A patent/CN112393841A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB235155A (en) * | 1924-06-03 | 1925-08-20 | J.C. Eckardt Aktiengesellschaft | |
| GB267627A (en) * | 1925-12-22 | 1927-03-22 | British Launderers Res Ass | Improvements in bourdon pressure gauges |
| GB339264A (en) * | 1929-09-03 | 1930-12-03 | Humphrey Pendrell Smith | Improvements in or relating to pressure or volume gauges indicating pressure or volume in gas containers or cylinders |
| US4450721A (en) * | 1980-04-17 | 1984-05-29 | Energy Innovation Enterprises, Ltd. | Apparatus for indicating quantity of liquified gas contained in a storage container |
| KR19990039342A (en) * | 1997-11-12 | 1999-06-05 | 김덕중 | Mixed Instruments to Measure Pressure and Temperature |
| CN1732375A (en) * | 2002-11-25 | 2006-02-08 | 权宁斌 | Pressure-thermometer in same time |
| CA2684829A1 (en) * | 2009-11-06 | 2011-05-06 | Winners Products Engineering Ltd. | Gas cylinder residual gas volume indicator |
| WO2012047862A1 (en) * | 2010-10-04 | 2012-04-12 | Wilton Cahn Levine | Time remaining display assembly |
| CN203241190U (en) * | 2013-06-04 | 2013-10-16 | 安徽新力电业科技咨询有限责任公司 | Instrument pressure gauge capable of intuitively reading volume of gas in compressed gas cylinder |
| FR3016679A1 (en) * | 2014-01-22 | 2015-07-24 | Air Liquide | VALVE FOR PRESSURIZED FLUID BOTTLE AND CORRESPONDING BOTTLE |
| CN106289357A (en) * | 2015-06-25 | 2017-01-04 | Wika亚历山大·威甘德欧洲股份两合公司 | There is the measurement apparatus of the measured value output of expansion |
| CN106840506A (en) * | 2015-11-17 | 2017-06-13 | Wika亚历山大·威甘德欧洲股份两合公司 | Pressure-measuring system with the choke valve being automatically switched off |
| FR3044406A1 (en) * | 2015-11-26 | 2017-06-02 | Air Liquide | OXYACETYLENE WORKING PLANT AND METHOD OF DETERMINING THE AUTONOMY OF SAID INSTALLATION |
| EP3176558A1 (en) * | 2015-12-03 | 2017-06-07 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Pressure gauge with bi-directional or distinctive marking affixed to the window thereof |
| CN205262664U (en) * | 2016-01-03 | 2016-05-25 | 刘文霞 | Explosion -proof alarm pressure gauge of magnetic induction |
| CN205483391U (en) * | 2016-03-07 | 2016-08-17 | 无锡市凯丰压力表有限公司 | Mechanical type manometer |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3100063B1 (en) | 2021-07-23 |
| FR3100063A1 (en) | 2021-02-26 |
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