CN212030697U - Online calibrating device of hydrogenation machine measurement performance - Google Patents

Online calibrating device of hydrogenation machine measurement performance Download PDF

Info

Publication number
CN212030697U
CN212030697U CN202020472286.4U CN202020472286U CN212030697U CN 212030697 U CN212030697 U CN 212030697U CN 202020472286 U CN202020472286 U CN 202020472286U CN 212030697 U CN212030697 U CN 212030697U
Authority
CN
China
Prior art keywords
hydrogenation
hydrogenation machine
electronic scale
mass
group
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.)
Active
Application number
CN202020472286.4U
Other languages
Chinese (zh)
Inventor
李海洋
江鲲
陈超
李雪菁
姚新红
沈琼
陈宇阳
陈琪
许骏龙
朱碧玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Measurement and Testing Technology
Original Assignee
Shanghai Institute of Measurement and Testing Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Measurement and Testing Technology filed Critical Shanghai Institute of Measurement and Testing Technology
Priority to CN202020472286.4U priority Critical patent/CN212030697U/en
Application granted granted Critical
Publication of CN212030697U publication Critical patent/CN212030697U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an online calibrating device of hydrogenation machine metering performance, including hydrogenation machine, static mass method device, data acquisition and processing mechanism, the hydrogenation machine includes the display screen, the valves that admit air, manometer, mass flowmeter, the valves that admit air links to each other with the air supply, valves, manometer and mass flowmeter that admit air connect gradually. The measuring principle of the utility model is based on the law of conservation of mass, and the electronic scale is taken as the measuring standard, so that the flow quantity value of the hydrogenation machine can be directly traced to the mass quantity value of the electronic scale; compared with the original standard table method hydrogenation machine calibration method which takes a higher-level standard table as a measurement standard, the method has the advantages of short traceability chain, few intermediate links, few uncertainty factors, high measurement accuracy and the like, can be applied in a laboratory and a field, improves the measurement accuracy while ensuring the detection convenience, and is worthy of great popularization.

Description

Online calibrating device of hydrogenation machine measurement performance
Technical Field
The utility model relates to a hydrogen energy measures technical field, especially relates to an online calibrating device of hydrogenation machine measurement performance.
Background
Hydrogen is used as an energy source, and the product of oxidation combustion only contains water, and the unit calorific value is higher, so the development and utilization of hydrogen energy are more and more emphasized by the society, and the development of hydrogen energy is enhanced in all main countries in the world, and the hydrogen energy cause is vigorously developed.
The hydrogenation machine is a special equipment for filling hydrogen gas into gas storage container and has the devices of metering and pricing, etc. Comprises a mass flow meter, an electronic controller, a quick cut-off valve, a hydrogenation gun and the like. As a measuring instrument for trade handover, the accuracy of the measuring performance of the hydrogenation machine is highly valued by government regulatory departments and various social circles.
Through retrieval, the Chinese patent No. CN110726459A discloses a hydrogenation machine on-site calibrating device, which comprises a computer, a high-pressure pipeline, a pressure gauge, an electromagnetic valve, a stop valve, a flow sensor and a flow transmitter, wherein one end of the high-pressure pipeline is provided with a hydrogenation gun interface, the other end of the high-pressure pipeline is provided with a gas cylinder interface, and the flow sensor, the pressure gauge, the electromagnetic valve and the stop valve are arranged on the high-pressure pipeline between the hydrogenation gun interface and the gas cylinder interface; the flow sensor is electrically connected with the flow transmitter, the computer is simultaneously in signal connection with the flow transmitter and the hydrogenation amount display module of the hydrogenation machine, and the computer can compare and analyze the actual hydrogenation amount sent by the flow transmitter with the hydrogenation amount displayed by the hydrogenation amount display module of the hydrogenation machine and judge whether the metering of the hydrogenation machine is accurate or not.
The calibration method provided by the prior art needs to determine the metering accuracy of the used standard flowmeter, and the tracing of the standard flowmeter mostly adopts a mass method and a standard table method to trace to the upper-level flow standard device, so that the tracing chain of the method is long, the uncertainty factor possibly introduced is more, and the accuracy of the standard flowmeter used in field calibration needs to be demonstrated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an online calibrating device for the metering performance of a hydrogenation machine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an online calibrating device of hydrogenation machine metering performance, includes hydrogenation machine, static mass method device, data acquisition and processing mechanism, the hydrogenation machine includes display screen, valves of admitting air, manometer, mass flowmeter, the valves of admitting air links to each other with the air supply, valves of admitting air, manometer and mass flowmeter connect gradually, the hydrogenation machine is installed and is added hydrogen the rifle, static mass method device includes hydrogenation rifle connector, instructs flowmeter, leading flow control valve, pressure sensor, gas cylinder valve group, electronic scale, gas bomb group, the hydrogenation rifle is connected with hydrogenation rifle connector through fast joint, hydrogenation rifle connector, instruction flowmeter, leading flow control valve, pressure sensor, gas cylinder valve group, gas bomb group connect gradually, gas bomb group places on the electronic scale, data acquisition and processing mechanism include computer, data acquisition and processing mechanism, And the data acquisition and control board card.
Further, the hydrogenation gun connector is provided with a plurality of quick-clamping connectors.
Further, the accuracy grade of the indicating flowmeter is not lower than grade 2.5, and the accuracy grade of the electronic scale is not lower than grade III.
Further, the gas cylinder valve group comprises 3 valves.
Further, the gas cylinder group comprises 3 gas cylinders.
Further, the computer controls the preposed flow regulating valve and the gas cylinder valve group at the same time, and the computer can realize the reading of the pressure sensor and the electronic scale.
A method for on-line calibrating the metering performance of a hydrogenation machine comprises the following steps: s1, dividing the flow range of the whole hydrogenation machine into a low flow area R (3), a middle flow area R (2) and a high flow area R (1);
s2, the computer collects or manually records the initial value and the final value of each measured electronic scale and the hydrogenation value displayed on a display screen of the hydrogenation machine, and the metering performance of the calibrated hydrogenation machine is comprehensively evaluated through a comparison method.
Further, in step S1, for the purpose of controlling the flow rate region during measurement, it is necessary to add hydrogen gas to the initial pressure of the hydrogen gas storage cylinder group respectively within a predetermined pressure range, and perform 3 measurements for each flow rate region.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the measuring principle of the utility model is based on the law of conservation of mass, and the electronic scale is taken as the measuring standard, so that the flow quantity value of the hydrogenation machine can be directly traced to the mass quantity value of the electronic scale; compared with the original standard table method hydrogenation machine calibration method which takes a higher-level standard table as a measurement standard, the method has the advantages of short traceability chain, few intermediate links, few uncertainty factors, high measurement accuracy and the like, can be applied in a laboratory and a field, improves the measurement accuracy while ensuring the detection convenience, and is worthy of great popularization.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of an overall structure of an online calibration device for the metering performance of a hydrogenation unit according to the present invention;
fig. 2 is a flow chart of an online calibration method for the metering performance of a hydrogenation machine according to the present invention.
In the figure: the device comprises a hydrogenation machine 1, a hydrogenation gun 2, a hydrogenation gun connector 3, an indication flowmeter 4, a preposed flow control valve 5, a pressure sensor 6, a gas cylinder valve group 7, an electronic scale 8, a gas cylinder group 9, a computer 10, a display screen 11, a gas inlet valve group 12, a pressure gauge 13 and a mass flowmeter 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, an on-line calibration device for the metering performance of a hydrogenation machine comprises a hydrogenation machine 1, a static mass method device and a data acquisition and processing mechanism, wherein the hydrogenation machine 1 comprises a display screen 11, an air inlet valve group 12, a pressure gauge 13 and a mass flow meter 14, the air inlet valve group 12 is connected with an air source, the air inlet valve group 12, the pressure gauge 13 and the mass flow meter 14 are sequentially connected, a hydrogenation gun 2 is installed on the hydrogenation machine 1, the static mass method device comprises a hydrogenation gun connector 3, an indication flow meter 4, a front flow control valve 5, a pressure sensor 6, a gas cylinder valve group 7, an electronic scale 8 and a gas cylinder group 9, the hydrogenation gun 2 is connected with the hydrogenation gun connector 3 through a quick connector, the hydrogenation gun connector 3, the indication flow meter 4, the front flow control valve 5, the pressure sensor 6, the gas cylinder valve group 7 and the gas cylinder group 9 are sequentially connected, the gas cylinder group 9, the data acquisition and processing mechanism comprises a computer 10 and a data acquisition and control board card.
The data acquisition and control refers to the reading acquisition of the electronic scale 8 and the pressure sensor 6 and the opening and closing control of the front flow regulating valve 5 and the gas cylinder valve group 7.
Further, the hydrogenation gun connector 3 is provided with various quick-snap joints.
Further, it is indicated that the accuracy grade of the flow meter 4 is not lower than grade 2.5, and the accuracy grade of the electronic scale 8 is not lower than grade III.
Further, the cylinder valve group 7 includes 3 valves.
Further, the gas cylinder group 9 includes 3 gas cylinders.
The gas storage cylinder is used for storing hydrogen flowing through the hydrogenation machine 1 and the detection pipeline in the verification process, each test of each flow area inflates one gas storage cylinder, and the pressure in the cylinder during inflation meets the requirement of the current flow area.
For a hydrogenation machine with the rated working pressure of 35MPa, when calibrating a low-flow region R (3), the pressure in a bottle is initially (21-22) MPa; when the middle flow area R (2) is calibrated, the pressure in the bottle is initially (11-12) MPa; when the convection current high area R (1) is calibrated, the pressure in the bottle is initially (1-2) MPa; for a hydrogenation machine with the rated working pressure of 70MPa, when calibrating a flow low region R (3), the pressure in a bottle is initially (55-58) MPa; when the middle flow area R (2) is calibrated, the pressure in the bottle is initially (28-31) MPa; in the calibration of the convection height region R (1), the pressure in the bottle should be initially (1-3) MPa.
Further, the computer 10 controls the front flow regulating valve 5 and the gas cylinder valve group 7 at the same time, and the computer 10 can realize the reading of the pressure sensor 6 and the electronic scale 8.
Referring to fig. 2, a method for on-line calibration of the metering performance of a hydrogenation machine, the method comprising the steps of: s1, dividing the flow range of the whole hydrogenation machine into a low flow area R (3), a middle flow area R (2) and a high flow area R (1);
s2, the computer collects or manually records the initial value and the final value of each measured electronic scale and the hydrogenation value displayed on a display screen of the hydrogenation machine, and the metering performance of the calibrated hydrogenation machine is comprehensively evaluated through a comparison method.
Further, in step S1, for the purpose of controlling the flow rate region during measurement, it is necessary to add hydrogen gas to the initial pressure of the hydrogen gas storage cylinder group respectively within a predetermined pressure range, and perform 3 measurements for each flow rate region.
The method uses an electronic measuring standard device to carry out measurement, and the mathematical expression of the measurement principle is
EHydrogenation machine=mIndication value-(mTerminate-mInitial)
Wherein E isHydrogenation machineM is an absolute indication error of the hydrogenation machine in one measurementIndication valueFor the hydrogenation value, m, displayed by the display device of the hydrogenation machine in one measurementTerminateM is the end value after hydrogenation of the electronic scaleInitialIs an indication value of the electronic scale before hydrogenation.
The detailed steps of the calibration method are as follows:
the method comprises the following steps: detecting a low flow region R (3); after the gas tightness of the detection pipeline is proved to be good, opening one of the preposed flow regulating valve 5 and the gas cylinder valve group 7 through the computer 10 and the data acquisition and control board card, starting the hydrogenation machine 1, starting a gas source, inflating the gas cylinder, observing a gas cylinder pressure indicator, reaching (21-22) MPa, closing all valves, stopping the hydrogenation machine, and stopping inflation; resetting the hydrogenation machine 1, and simultaneously recording the current value of the electronic scale 8 as mInitial
Step two: opening the preposed flow control valve 5 and the automatic valve in the process again, starting the hydrogenation machine 1, starting the gas source, inflating the gas storage cylinder, closing all the valves when the pressure indicating device of the gas storage cylinder reaches (34-35) MPa, stopping the hydrogenation machine, and stopping inflation; at the same time, reading the reading of the display 11 of the hydrogenation machine and the indication value m of the electronic scale 8 by manpower or a computerTerminate
Step three: comparing the reading displayed by the display 11 of the hydrogenation machine with the difference before and after hydrogenation of the electronic scale to obtain the absolute error of the indication value of the hydrogenation machine detected at one time in the low flow area R (3);
step four: replacing the gas storage cylinder of the hydrogen gas storage cylinder group 9, repeating the step one to the step three times, and taking the average value of 3 times of measurement as the indication value absolute error of the flow low region R (3);
step five: carrying out error measurement on the middle flow area R (2) and the high flow area R (1); repeating the first step to the fourth step, wherein when the flow middle area R (2) is measured, the initial pressure value of the gas storage bottle is (11-12) MPa; when the flow rate high region R (1) is measured, the initial pressure value of the gas storage cylinder is (1-2) MPa.
So far, the indication value errors of all flow areas of the hydrogenation machine 1 are detected. It should be noted that in the high, medium and low flow regions defined in the above examples, the initial pressure value of the gas cylinder needs to be determined according to the rated working pressure of the hydrogenation machine. At present, the rated working pressure of the domestic mainstream hydrogenation machine is 35MPa and 70 MPa. For a 70MPa hydrogenation machine, when the measurement performance of a high-medium-low flow area is detected, the initial pressure value of a gas storage cylinder is (1-3) MPa, (28-31) MPa, and (55-58) MPa.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the device has simple structure and convenient use, and is suitable for field calibration and laboratory calibration of the hydrogenation machine;
(2) the electronic scale is used as a measurement standard, so that the flow value is directly traced to a quality value, the tracing chain is short, uncertain factors are few, and the accuracy is high;
(3) the device can realize comprehensive detection from a high flow area to a low flow area of the hydrogenation machine, and can evaluate the metering performance of the tested oiling machine more comprehensively.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. An on-line calibration device for the metering performance of a hydrogenation machine comprises the hydrogenation machine (1), a static mass method device and a data acquisition and processing mechanism, wherein the hydrogenation machine (1) comprises a display screen (11), an air inlet valve group (12), a pressure gauge (13) and a mass flow meter (14), the air inlet valve group (12) is connected with an air source, the air inlet valve group (12), the pressure gauge (13) and the mass flow meter (14) are sequentially connected, and the hydrogenation machine (1) is provided with a hydrogenation gun (2), and the on-line calibration device is characterized in that the static mass method device comprises a hydrogenation gun connector (3), an indication flow meter (4), a front flow control valve (5), a pressure sensor (6), an air cylinder valve group (7), an electronic scale (8) and an air storage cylinder group (9), wherein the hydrogenation gun (2) is connected with the hydrogenation gun connector (3) through a quick connector, the device is characterized in that the hydrogenation gun connector (3), the indicating flow meter (4), the front flow regulating valve (5), the pressure sensor (6), the gas cylinder valve group (7) and the gas storage cylinder group (9) are sequentially connected, the gas storage cylinder group (9) is placed on the electronic scale (8), and the data acquisition and processing mechanism comprises a computer (10) and a data acquisition and control board card.
2. The on-line calibration device for the metering performance of the hydrogenation machine according to claim 1, wherein the hydrogenation gun connector (3) is provided with a plurality of quick-release connectors.
3. The on-line calibrating device for the metering performance of the hydrogenation machine according to claim 1, wherein the accuracy grade of the indicating flowmeter (4) is not lower than 2.5 grade, and the accuracy grade of the electronic scale (8) is not lower than III grade.
4. An on-line calibration device for the metering performance of a hydrogenation machine according to claim 1, characterized in that the gas cylinder valve group (7) comprises 3 valves.
5. An on-line calibration device for the metering performance of a hydrogenation unit as claimed in claim 1, wherein said gas cylinder group (9) comprises 3 gas cylinders.
6. The on-line calibrating device for the metering performance of the hydrogenation machine according to claim 1, wherein the computer (10) controls the preposed flow regulating valve (5) and the gas cylinder valve group (7) simultaneously, and the computer (10) can realize the reading of the pressure sensor (6) and the electronic scale (8).
CN202020472286.4U 2020-04-02 2020-04-02 Online calibrating device of hydrogenation machine measurement performance Active CN212030697U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020472286.4U CN212030697U (en) 2020-04-02 2020-04-02 Online calibrating device of hydrogenation machine measurement performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020472286.4U CN212030697U (en) 2020-04-02 2020-04-02 Online calibrating device of hydrogenation machine measurement performance

Publications (1)

Publication Number Publication Date
CN212030697U true CN212030697U (en) 2020-11-27

Family

ID=73489678

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020472286.4U Active CN212030697U (en) 2020-04-02 2020-04-02 Online calibrating device of hydrogenation machine measurement performance

Country Status (1)

Country Link
CN (1) CN212030697U (en)

Similar Documents

Publication Publication Date Title
CN201925716U (en) Metering calibration standard device for liquefied natural gas (LNG) dispenser
CN204346638U (en) A kind of pressure calibration/calibrating installation
CN201207013Y (en) Detecting machine for airtightness of oil tank
CN107941307B (en) Propellant flow field calibration system and method for conventional large-scale liquid engine
CN105387339B (en) CNG on-site proving methods
CN107478382B (en) Automatic detection device and detection method for pressure instrument
KR101597951B1 (en) water meter testing system and water meter testing using the system
CN104180861A (en) Standard device and measuring method using mass method for detecting high-pressure gas filling flow
CN102401235A (en) LNG (Liquefied Natural Gas) dispenser calibrating device
CN105021356A (en) Test method for detecting leakage of hydrogen system of hydrogen-cooled generator
US9429493B2 (en) Manifold assembly for a portable leak tester
CN109884263A (en) A kind of dissolved oxygen sensor experimental rig and its test method
CN202349591U (en) Calibration device of liquefied natural gas (LNG) dispenser
CN111289064A (en) Online calibrating device and method for metering performance of hydrogenation machine
CN212030697U (en) Online calibrating device of hydrogenation machine measurement performance
CN206657012U (en) Based on the oil dissolved gas monitoring device field test system for comparing analysis
CN214200535U (en) Valve leakage test system
CN102879037B (en) Verifying device for gas drainage comprehensive parameter tester
CN204241054U (en) A kind ofly detect the standard set-up that gases at high pressure fill mass rate
CN206772527U (en) A kind of pressure vessel detecting system
JP4281001B2 (en) Gas leak inspection device
CN207423442U (en) A kind of pressure sensor checking tool
CN214096281U (en) High-pressure angle type water meter mass method calibrating device
CN213842325U (en) Natural gas testing and verification integrated system
CN215065030U (en) Static pressure characteristic testing device of differential pressure transmitter

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant