CN101387533A - IC card gas Roots flowmeter measuring pocket and measuring method - Google Patents
IC card gas Roots flowmeter measuring pocket and measuring method Download PDFInfo
- Publication number
- CN101387533A CN101387533A CNA2007101646251A CN200710164625A CN101387533A CN 101387533 A CN101387533 A CN 101387533A CN A2007101646251 A CNA2007101646251 A CN A2007101646251A CN 200710164625 A CN200710164625 A CN 200710164625A CN 101387533 A CN101387533 A CN 101387533A
- Authority
- CN
- China
- Prior art keywords
- card
- flowmeter
- operation valve
- filtrator
- card controller
- 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.)
- Granted
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
- Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
Abstract
The invention relates to a measuring pocket for an IC card gas roots flowmeter consisting of a gas roots flowmeter and an IC card flowmeter, and a measuring method thereof. A filter and a roots flowmeter are positioned in the pocket body, and an air outlet of the filter is communicated with an air inlet of the roots flowmeter through an IC card controlling valve; a panel or side plate of the pocket body is provided with an IC card slot window and a meter reading window which are provided with a window sash separately, the IC card slot corresponds to the IC card slot window and is controlled by an IC card controller through a data wire, and a dial plate of the roots flowmeter corresponds to the meter reading window. The measuring pocket has the following advantages: firstly, the measuring pocket realizes recharging before supplying gas; and secondly, effective supervision and control of the difference between input pressure and output pressure of a liquid measuring pocket are realized, thereby ensuring no loss of interests of users.
Description
Technical field
The present invention relates to the flowmeter batch meter of the box-type of a kind of Roots's gas meter and IC-card flowmeter formation, be mainly used in the metering of coal gas and rock gas, belong to the flowmeter batch meter and make the field.
Background technology
All Granted publication CN200950068Y of the applicant, title " gauging box of Roots gas flowmeter ", be positioned at the filtrator gas outlet of casing and Roots in this gauging box of Roots gas flowmeter and show air intake opening and be communicated with by connecting leg, the air intake opening of filtrator and Roots show the gas outlet and are communicated with and the interface of valve inlet, outlet is positioned at outside the casing gas outlet of the air intake opening by valve and filtrator and Roots's table respectively.Blemish in an otherwise perfect thing be: the one, can only show the amount that fluid flows through, belong to first usefulness gas, after see table, again the payment mode, therefore exist the individual user to escape gas inevitably, steal phenomenon such as gas, particularly for stealing the gas phenomenon, its unsafe factor can't be evaded at all; The 2nd, with regard to gas consumption what, easily produce the deviation of checking meter, the inconvenience management; The 3rd, the fluid pressure differential between draft tube and escape pipe both can't show, and was also uncontrollable, made user's legitimate rights and interests both have no way of having looked into, more can not get guaranteeing.
Summary of the invention
Purpose of design: avoid the weak point in the background technology, design a kind of gas of supplementing with money earlier, use, two table meterings show, IC-card waist wheel (Roots) the gas flow flowmeter measuring pocket and the metering method of control automatically.
Design proposal: in order to realize above-mentioned purpose of design.1, being communicated with by the IC-card operation valve between the air intake opening of the gas outlet of filtrator and rotz flowmeter, is one of feature of the present invention.The purpose of doing like this is: after fluid filters through filter, want by rotz flowmeter to the user place, must be through the IC-card operation valve, and the IC-card operation valve is made of IC-card controller and operation valve on structural design, the IC-card controller is used for data (the supplementing amount with money) identification of IC-card and accepts, and according to the automatic load value data that subtracts the user of drawing of the Fluid Volume that the user consumed, when load value data is not enough to air feed, IC-card controller instruction control valve activator closed control valve, thereby realize supplementing with money earlier (paying earlier), the purpose of back usefulness gas with convenient management, is also blocked up effectively simultaneously and has been cut off the generation of stealing the gas behavior.2, being respectively equipped with pressure transducer or tensimeter and pressure transducer or tensimeter output signal with the tube wall of rotz flowmeter escape pipe on the tube wall of filtrator draft tube and being connected by the signal input part of data line with the IC-card controller, is two of feature of the present invention.The purpose of doing like this is: be positioned at rotz flowmeter and give vent to anger before the force value that the pressure of the pressure transducer on the tube wall sets less than the pressure transducer on the filtrator air inlet tube wall, display screen in the IC-card controller will show pressure differential, and send caution, remind user notification Gas Company that filtrator is cleaned, company does not clean filtrator if the user has circular gas, when and can guarantee that user's economic interests are not impaired, when rotz flowmeter is given vent to anger the force value that the pressure of the pressure transducer on the tube wall sets less than the pressure transducer on the filtrator air inlet tube wall, IC-card is by system device instruction control valve activator closed control valve, and is not impaired to guarantee user benefit.3, the flow in IC-card waist wheel (Roots) gas flow flowmeter measuring pocket adopts two display technique schemes, is three of feature of the present invention.The purpose of doing like this is: the one, can verify the throughput of fluid mutually, and guarantee accurate measurement; The 2nd, just in case one of them indication mechanism breaks down, can guarantee that still data do not lose.
Technical scheme 1:IC waist blocking wheel (Roots) gas flow flowmeter measuring pocket, filtrator and rotz flowmeter are positioned at casing, are communicated with by the IC-card operation valve between the gas outlet of described filtrator and the air intake opening of rotz flowmeter; The panel of described casing or side plate are provided with IC-card socket window and meter reading window and window and are respectively equipped with sash, and the IC-card socket is relative with IC-card socket window and be controlled by the IC-card controller by data line, and the rotz flowmeter dial plate is relative with the meter reading window.
Technical scheme 2:IC waist blocking wheel (Roots) gas flow flowmeter measuring pocket, filtrator and rotz flowmeter are positioned at casing, be communicated with by the IC-card operation valve between the gas outlet of described filtrator and the air intake opening of rotz flowmeter, be respectively equipped with pressure transducer or tensimeter and pressure transducer or tensimeter output signal with the tube wall of rotz flowmeter escape pipe on the tube wall of filtrator draft tube and be connected by the signal input part of data line with the IC-card controller, the signal output part of IC-card controller connects the operation valve driving circuit and is used to control opening or closing of operation valve; The panel of described casing or side plate are provided with IC-card socket window and meter reading window and window and are respectively equipped with sash, the IC-card socket is relative with IC-card socket window and be controlled by the IC-card controller by data line, and the signal output part of IC-card controller connects the operation valve driving circuit and is used to control opening or closing of operation valve; Described rotz flowmeter 5 dial plates are relative with the meter reading window.
IC-card after the metering method of technical scheme 3:IC waist blocking wheel (Roots) gas flow flowmeter measuring pocket will be supplemented with money inserts the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card (money), IC-card controller instruction control opening of valves, fluid is through filtrator, operation valve and rotz flowmeter flow to the user, when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, the IC-card controller instructs its driving circuit closed control valve, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.
The metering method of technical scheme 4:IC waist blocking wheel (Roots) gas flow flowmeter measuring pocket, IC-card after supplementing with money is inserted the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card, IC-card controller instruction control opening of valves, fluid is through filtrator, when operation valve and rotz flowmeter flow to the user, (1) pressure transducer on being positioned at filtrator air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during less than the value that sets, allow fluid to pass through operation valve, (2) pressure transducer on being positioned at filtrator air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during greater than the value that sets, do not allow fluid to demonstrate pressure difference by operation valve and IC controller, when (3) admission line pressure is greater than user pipe institute bearing pressure, the pressure transducer that is positioned on the filtrator air inlet tube wall feeds back to the IC-card controller with detecting pressure signal, IC-card controller instruction control valve closing, and report to the police simultaneously, (4) when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, the IC-card controller instructs its driving circuit closed control valve, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.
The present invention compares with background technology, and the one, make that the flowmeter measuring tank has been realized supplementing with money earlier, the purpose of back air feed; The 2nd, realized that the convection cell batch meter is imported, the effective monitoring and the control of output pressure pressure differential, not impaired to guarantee user benefit.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of IC-card automatic control flowmeter measuring tank.
Fig. 2 is the structural representation of filter assembly.
Fig. 3 is the structural representation of IC-card operation valve.
Fig. 4 is the structural representation of IC-card automatic control flowmeter measuring tank.
Embodiment
Embodiment 1: with reference to accompanying drawing 1～4.IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, described casing 4 adopts stainless steel or engineering plastics or galvanized sheet to make.Filtrator 1 and rotz flowmeter 7 are positioned at casing 4, between the air intake opening of the gas outlet of described filtrator 1 and rotz flowmeter 7 by IC-card operation valve 5 and 6 and it is communicated with pipeline, flange that the IC-card operation valve is complementary, that is to say, the air intake opening of the operation valve 6 in the gas outlet of filtrator 1 and IC-card operation valve 5 and 6 is communicated with, and the gas outlet of operation valve is communicated with the air intake opening of rotz flowmeter 7.The IC-card operation valve is made of IC-card controller 5 and operation valve 6, and operation valve 6 is opened or closed and is controlled by IC-card controller 5.The tube wall that is positioned at filtrator 1 draft tube is provided with pressure transducer 10 or tensimeter, and the tube wall that is positioned at rotz flowmeter 7 escape pipes is provided with pressure transducer 8 or tensimeter.The panel of described casing 4 or side plate are provided with IC-card socket window 11 and meter reading window 14 and window and are respectively equipped with sash 12 and 15, sash is provided with can be around the handle 13 of axle upset, when not drawing, the face of handle 13 and the face of sash are same plane, when drawing, to shake hands the top of face by advancing with finger, handle 13 that its handle upset formation hand can be held.The IC-card socket is relative with IC-card socket window and be controlled by IC-card controller 4 by data line, and rotz flowmeter 7 dial plates are relative with the meter reading window.Be provided with the digital flow display in the IC-card controller 6 in the IC-card operation valve 5 and 6.Rotz flowmeter 7 itself is provided with the flow register.Panel is provided with lock 16.Filtrator 1 is given vent to anger and is connected with gas outlet 3 by vent valve 2 on the tube wall, that is to say, can be equipped with on the batch meter structure and diffuse valve, and its function is an air in the discharge tube before the metering system ventilation, has guaranteed the normal operation of measuring apparatus.Be provided with Antitheft lead seal between casing and the door, it can prevent that not only other people from illegally stealing gas, and prevents that other people from arbitrarily opening the gas metering case.
IC-card controller in batch meter inside can be equipped with control alarm 9, that is to say, in the metering casing, draw cable, be connected with the control alarm that is placed on the outside, its function is to start automatically to report to the police when control system electric weight deficiency and valve closing, has guaranteed that a whole set of metering system better turns round, and can be equipped with gas leakage alarm 11 in the batch meter, its function is if the gas leak phenomenon takes place in operational process, produces and reports to the police, and has guaranteed safe metering.
Embodiment 2: on the basis of embodiment 1, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, filtrator 1 and rotz flowmeter 7 are positioned at casing 4, be communicated with by IC-card operation valve 5 and 6 between the air intake opening of the gas outlet of described filtrator 1 and rotz flowmeter 7, be respectively equipped with pressure transducer 8 or tensimeter and pressure transducer or tensimeter output signal with the tube wall of rotz flowmeter 7 escape pipes on the tube wall of filtrator 1 draft tube and be connected by the signal input part of data line with the IC-card controller, the signal output part of IC-card controller connects the operation valve driving circuit and is used to control opening or closing of operation valve; The panel of described casing 4 or side plate are provided with IC-card socket window and meter reading window and window and are respectively equipped with sash 12 and 15, the IC-card socket is relative with IC-card socket window and be controlled by IC-card controller 4, the signal output part operation valve driving circuit of IC-card controller by data line; Described rotz flowmeter 7 dial plates are relative with the meter reading window.
Embodiment 3: on the basis of embodiment 1, the metering method of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, IC-card after supplementing with money (spend money and buy coal gas or rock gas) is inserted the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card (data that recharged), the IC-card controller is by driving circuit instruction control opening of valves, fluid is through filtrator, operation valve and rotz flowmeter flow to the user, when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, the IC-card controller instructs its driving circuit closed control valve, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.
Embodiment 4: on the basis of embodiment 2, the metering method of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, IC-card after supplementing with money is inserted the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card, IC-card controller instruction control opening of valves, fluid is through filtrator, when operation valve and rotz flowmeter flow to the user, (1) pressure transducer on being positioned at filtrator 1 air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during less than the value that sets, allow fluid to pass through operation valve, (2) pressure transducer on being positioned at filtrator 1 air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during greater than the value that sets, do not allow fluid to demonstrate pressure difference by operation valve and IC controller, when (3) admission line pressure is greater than user pipe institute bearing pressure, being positioned at pressure transducer on the filtrator 1 air inlet tube wall will detect pressure signal and feed back to the IC-card controller, IC-card controller instruction control valve closing, and alarm 9 is reported to the police simultaneously, (4) when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, instruction of IC-card controller and drive control valve are closed, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.The fluid of the application's indication is coal gas, rock gas, liquefied gas.
What need understand is: though the foregoing description is to the present invention's detailed explanation of contrasting; but these explanations, just to simple declaration of the present invention, rather than limitation of the present invention; any innovation and creation that do not exceed in the connotation of the present invention all fall within the scope of protection of the present invention.
Claims (10)
1, a kind of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, filtrator and rotz flowmeter are positioned at casing, it is characterized in that: be communicated with by the IC-card operation valve between the gas outlet of described filtrator and the air intake opening of rotz flowmeter; The panel of described casing or side plate are provided with IC-card socket window and meter reading window and window and are respectively equipped with sash, and the IC-card socket is relative with IC-card socket window and be controlled by the IC-card controller by data line, and the rotz flowmeter dial plate is relative with the meter reading window.
2, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket according to claim 1, it is characterized in that: described IC-card operation valve is made of IC-card controller and operation valve, and operation valve is opened or is closed and is controlled by the IC-card controller.
3, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket according to claim 1, it is characterized in that: the tube wall that is positioned at the filtrator draft tube is provided with pressure transducer or tensimeter.
4, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket according to claim 1, it is characterized in that: the tube wall that is positioned at the rotz flowmeter escape pipe is provided with pressure transducer or tensimeter.
5, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket according to claim 1, it is characterized in that: described casing adopts stainless steel or engineering plastics or galvanized sheet to make.
6, IC-card waist according to claim 1 wheel (Roots) gas flow flowmeter measuring pocket is characterized in that: the air intake opening of the operation valve in the gas outlet of filtrator and the IC-card operation valve is communicated with, and the gas outlet of operation valve is communicated with the air intake opening of rotz flowmeter.
7, IC-card waist wheel (Roots) gas flow flowmeter measuring pocket according to claim 1 is characterized in that: be provided with the digital flow display in the IC-card controller in the IC-card operation valve.
8, a kind of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, filtrator and rotz flowmeter are positioned at casing, it is characterized in that: be communicated with by the IC-card operation valve between the gas outlet of described filtrator and the air intake opening of rotz flowmeter, be respectively equipped with pressure transducer or tensimeter and pressure transducer or tensimeter output signal with the tube wall of rotz flowmeter escape pipe on the tube wall of filtrator draft tube and be connected by the signal input part of data line with the IC-card controller, the signal output part of IC-card controller connects the operation valve driving circuit and is used to control opening or closing of operation valve; The panel of described casing or side plate are provided with IC-card socket window and meter reading window and window and are respectively equipped with sash, the IC-card socket is relative with IC-card socket window and be controlled by the IC-card controller, the signal output part operation valve driving circuit of IC-card controller by data line; Described rotz flowmeter dial plate is relative with the meter reading window.
9, a kind of metering method of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, it is characterized in that: the IC-card after will supplementing with money inserts the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card, IC-card controller instruction control opening of valves, fluid is through filtrator, operation valve and rotz flowmeter flow to the user, when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, the IC-card controller instructs its driving circuit closed control valve, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.
10, a kind of metering method of IC-card waist wheel (Roots) gas flow flowmeter measuring pocket, it is characterized in that: the IC-card after will supplementing with money inserts the IC-card socket that is positioned at cabinet panel or side plate, the data line that links to each other with the IC-card socket is input to the IC-card controller with the data in the IC-card, IC-card controller instruction control opening of valves, fluid is through filtrator, when operation valve and rotz flowmeter flow to the user, (1) pressure transducer on being positioned at filtrator 1 air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during less than the value that sets, allow fluid to pass through operation valve, (2) pressure transducer on being positioned at filtrator 1 air inlet tube wall and be positioned at rotz flowmeter and give vent to anger the pressure reduction of the pressure transducer on the tube wall during greater than the value that sets, do not allow fluid to demonstrate pressure difference by operation valve and IC controller, when (3) admission line pressure is greater than user pipe institute bearing pressure, the pressure transducer that is positioned on the filtrator air inlet tube wall feeds back to the IC-card controller with detecting pressure signal, IC-card controller instruction control valve closing, and report to the police simultaneously, (4) when the money of user memory in the IC-card controller is not enough to PayPal and crosses the gas money of rotz flowmeter, instruction of IC-card controller and drive control valve are closed, and digital flow display and the rotz flowmeter in the IC-card controller shows gases used value respectively simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101646251A CN101387533B (en) | 2007-12-25 | 2007-12-25 | IC card gas Roots flowmeter measuring pocket and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101646251A CN101387533B (en) | 2007-12-25 | 2007-12-25 | IC card gas Roots flowmeter measuring pocket and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101387533A true CN101387533A (en) | 2009-03-18 |
| CN101387533B CN101387533B (en) | 2011-06-15 |
Family
ID=40477087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101646251A Active CN101387533B (en) | 2007-12-25 | 2007-12-25 | IC card gas Roots flowmeter measuring pocket and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101387533B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634574B (en) * | 2009-08-24 | 2011-12-14 | 上海埃科燃气测控设备有限公司 | Valve control air Roots flowmeter and valve control air Roots flow metering box comprising same |
| CN105156898A (en) * | 2015-07-09 | 2015-12-16 | 罗美特（上海）自动化仪表股份有限公司 | Intelligent flow measurement centralized control device |
| CN107167204A (en) * | 2017-07-05 | 2017-09-15 | 上海埃科燃气测控设备有限公司 | Integrated IC card gas roots flowmeter measuring tank |
| CN107228695A (en) * | 2017-07-05 | 2017-10-03 | 上海埃科燃气测控设备有限公司 | Integrated gas rotz flowmeter measuring tank |
| CN109544802A (en) * | 2018-11-22 | 2019-03-29 | 宁波创盛仪表有限公司 | A kind of authentication type IC card intelligent controller |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185423Y (en) * | 1994-01-22 | 1994-12-14 | 于榕 | IC card type pipeline gas meter |
| GB2349972B (en) * | 1999-05-08 | 2003-07-16 | Siemens Metering Ltd | Method and apparatus for purchasing energy |
| CN2723809Y (en) * | 2003-12-30 | 2005-09-07 | 咸阳蓝天燃气设备有限公司 | Integrated intelligence IC card metering gas pressure regulating cabinet |
| CN100478653C (en) * | 2006-09-26 | 2009-04-15 | 上海埃科燃气测控设备有限公司 | Gauging box of Roots gas flowmeter |
| CN201170737Y (en) * | 2007-12-25 | 2008-12-24 | 上海埃科燃气测控设备有限公司 | Roots type self-control flow measuring pocket for IC card |
| CN201170736Y (en) * | 2007-12-25 | 2008-12-24 | 上海埃科燃气测控设备有限公司 | Roots type flow measuring pocket for IC card |
-
2007
- 2007-12-25 CN CN2007101646251A patent/CN101387533B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634574B (en) * | 2009-08-24 | 2011-12-14 | 上海埃科燃气测控设备有限公司 | Valve control air Roots flowmeter and valve control air Roots flow metering box comprising same |
| CN105156898A (en) * | 2015-07-09 | 2015-12-16 | 罗美特（上海）自动化仪表股份有限公司 | Intelligent flow measurement centralized control device |
| CN107167204A (en) * | 2017-07-05 | 2017-09-15 | 上海埃科燃气测控设备有限公司 | Integrated IC card gas roots flowmeter measuring tank |
| CN107228695A (en) * | 2017-07-05 | 2017-10-03 | 上海埃科燃气测控设备有限公司 | Integrated gas rotz flowmeter measuring tank |
| CN107167204B (en) * | 2017-07-05 | 2024-02-27 | 上海埃科燃气测控设备有限公司 | Integrated IC card gas roots flowmeter box |
| CN107228695B (en) * | 2017-07-05 | 2024-02-27 | 上海埃科燃气测控设备有限公司 | Integrated gas roots flowmeter box |
| CN109544802A (en) * | 2018-11-22 | 2019-03-29 | 宁波创盛仪表有限公司 | A kind of authentication type IC card intelligent controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101387533B (en) | 2011-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101387533B (en) | IC card gas Roots flowmeter measuring pocket and measuring method | |
| US11555549B2 (en) | Accuracy enhancing valve assembly and method | |
| EP2029975B1 (en) | A method and an apparatus for operating an electromagnetic valve associated to a gas meter | |
| CA2915565A1 (en) | Examination process and system for the in situ determination of rate of feeding an inhibitor into a gas pipeline for preventing hydrate formation | |
| CA2551961A1 (en) | Natural gas odorant injection system | |
| CN102650369A (en) | Liquefied natural gas filling pry | |
| CN105221935A (en) | Water-leakage protecting device and method thereof | |
| TW201843453A (en) | Devices and methods for fluid metering | |
| CN201170737Y (en) | Roots type self-control flow measuring pocket for IC card | |
| CN201170736Y (en) | Roots type flow measuring pocket for IC card | |
| CN202580627U (en) | Liquefied natural gas feeding pry | |
| CN205740325U (en) | A kind of portable quantitatively barrelling equipment | |
| CN108871485B (en) | Device for installation in a fluid line network | |
| CN205537806U (en) | Intelligent gas meter | |
| CN205655974U (en) | Leak testing appearance of relief valve | |
| JPH08128914A (en) | Leak detection device | |
| CN203444343U (en) | Fluid supply control apparatus | |
| CN110672173A (en) | Intelligent gas waist wheel flowmeter and use method thereof | |
| CN205679594U (en) | A kind of integral type water quality on-line measuring device | |
| CN206362395U (en) | A kind of intelligent opto-electrical direct-reading water meter | |
| JP5143458B2 (en) | Remaining usable time notification device and fluid supply system | |
| CN212334587U (en) | Full-automatic chlorine dioxide generator | |
| RU85553U1 (en) | REMOTE CONTROL DEVICE FOR GAS DISTRIBUTION PARAMETERS | |
| JP4990819B2 (en) | Gas meter and gas meter system | |
| KR102410143B1 (en) | Smart single channel particle counter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |