CN204241054U - A kind ofly detect the standard set-up that gases at high pressure fill mass rate - Google Patents

A kind ofly detect the standard set-up that gases at high pressure fill mass rate Download PDF

Info

Publication number
CN204241054U
CN204241054U CN201420517628.4U CN201420517628U CN204241054U CN 204241054 U CN204241054 U CN 204241054U CN 201420517628 U CN201420517628 U CN 201420517628U CN 204241054 U CN204241054 U CN 204241054U
Authority
CN
China
Prior art keywords
air cylinder
pressured air
gases
standard set
cylinder 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.)
Expired - Fee Related
Application number
CN201420517628.4U
Other languages
Chinese (zh)
Inventor
刘东升
赵普俊
刘缙林
邱东利
路炜
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.)
Flow Institute Of National Institute Of Measurement & Testing Technology
Original Assignee
Flow Institute Of National Institute Of Measurement & 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 Flow Institute Of National Institute Of Measurement & Testing Technology filed Critical Flow Institute Of National Institute Of Measurement & Testing Technology
Priority to CN201420517628.4U priority Critical patent/CN204241054U/en
Application granted granted Critical
Publication of CN204241054U publication Critical patent/CN204241054U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses and a kind ofly detect the standard set-up that gases at high pressure fill mass rate, comprise several high-pressured air cylinder group, electronic balance and jacking gears, all high-pressured air cylinder groups are connected in parallel by tracheae, jacking gear is used for high-pressured air cylinder group integral elevating, and tracheae is also provided with gas cylinder valve; Wherein jacking gear comprises load wagon, is located at several hydraulic jacks, the needle-valve of adjustable hydraulic oil mass, a threeway directional control valve and oil pump bottom load wagon.This standard set-up contrasts to judge whether measurand meets standard-required with measurand indicating value by the weighing of electronic balance to high-pressured air cylinder group is of poor quality, and its flow range is wider, and the accuracy of measuring is higher, and measuring repeatability is better; This standard set-up can connect CNG filling machine, CNG gas filler measurer, high-pressure gas flow meter respectively to carry out gauge check.

Description

A kind ofly detect the standard set-up that gases at high pressure fill mass rate
Technical field
The utility model relates to a kind of high-pressure gas flow meter amount field, particularly a kind ofly detects the standard set-up that gases at high pressure fill mass rate.
Background technology
According to the regulation of country's " measurement Law ", mandatory administration scope should be included in for the high-pressure gas flow meter amount instrument/device relating to trade settlement and security protection in accordance with the law, compulsory verification and periodic calibration first must be carried out, to judge whether it meets the measurement standard of Standard, to ensure the accurate measurement, reliable of high-pressure gas flow meter amount instrument.But there are the following problems for current high-pressure gas flow meter amount context of detection:
1. the gauge check of high-pressure gas flow meter measuring appratus instrument lacks technical equipment
At present, various types of high-pressure gas flow meter measuring appratus instrument is used widely in the links such as the construction of natural gas fields, production, conveying, storage, circulation, distribution, handing-over, monitoring, clearing, and its quantity is quite huge.But, owing to lacking required high-pressure gas flow meter amount standard set-up technological means, the calibrating of the high-pressure gas flow meter amount instrument of trade settlement and security protection is related to gases at high pressure mass flowmeter etc., calibration great majority adopt water to replace gases at high pressure matching standards table method to carry out test stone.Experiment shows, because calibrating is different with service condition, particularly used medium is different, and the impact of water and gas flow meter error is different.Such as, fail to be sold at auction that to determine high pressure mass flowmeter error be 0.2% with water is real, for gas medium timing signal, its error may just more than 0.5%, therefore adopts pressurized air than adopting water to high pressure mass flowmeter and demarcate more realistic condition of work.
2. the gauge check of compressed natural gas (CompressedNatural Gas is called for short CNG) filling machine lacks technical equipment
Compressed natural gas as clean energy resource is widely used as motor vehicle fuel, but the construction of CNG Filling Station still lags behind the development of gas-fueled vehicles, and especially the gauge check of autoamtic compressed gas filling machine seriously lags behind the development of gas-fueled vehicles.
Therefore, set up high-pressure gas flow meter amount calibrating installation and CNG filling machine test stone device, can be described as the task of top priority of current high-pressure gas flow meter amount work, not only can meet the domestic needs to the calibrating of high-pressure gas flow meter amount at present, accurate-metering for clean energy resource provides reliable pick-up unit, and provide strong detection means, simultaneously also for water, the impact of gas on high-pressure flowmeter, CNG filling machine error provide reliable research means for the fair and just metering of international rock gas trade settlement.
Utility model content
The error in dipping that the gauge check of high-pressure gas flow meter measuring appratus instrument existing for the purpose of this utility model is to overcome in prior art and the gauge check of autoamtic compressed gas filling machine adopt traditional water detection method to cause is larger, lack again the above-mentioned deficiency of relevant other detection techniques equipment simultaneously, provide a kind of and detect the standard set-up that gases at high pressure fill mass rate.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme:
A kind ofly detect the standard set-up that gases at high pressure fill mass rate, comprise several high-pressured air cylinder group, electronic balance and jacking gears, all described high-pressured air cylinder groups are connected in parallel by tracheae, described jacking gear is used for described high-pressured air cylinder group integral elevating, and described tracheae is also provided with gas cylinder valve.
Standard set-up described in the utility model, adopt gases at high pressure as flow detection medium, gases at high pressure are filled by one group of several high-pressured air cylinder group, be seated on electronic balance by the lifting of jacking gear or lower general who has surrendered's high-pressured air cylinder group, electronic balance weighs its gases at high pressure again and fills the of poor quality of front and back, the measured value of institute's detected object (as the CNG filling machine in the utility model, high-pressure gas flow meter, CNG gas filler measurer) is contrasted, measures its error amount and whether meet standard; The method overcome and utilize the uncertainty of original method of standard table filling machine device for on-site calibration to be difficult to the shortcoming improved, meet the demand for development of current high-pressure gas flow instrument, equipment calibrating business, its technical merit is compared with domestic similar standard set-up, flow range is wider, the accuracy of measuring is higher, measuring repeatability is better, and its expanded uncertainty reaches 0.05%, and reliability is high.
Preferably, described jacking gear comprises the load wagon with wheel can putting described high-pressured air cylinder group, several hydraulic jacks are provided with bottom described load wagon, the flexible pipe of each described hydraulic jack is provided with the needle-valve of adjustable hydraulic oil mass, and the flexible pipe of all described hydraulic jacks connects a threeway directional control valve and oil pump.
Jacking gear includes load wagon, is placed on load wagon, conveniently moving by high-pressured air cylinder group; The flexible pipe connecting tee directional control valve of all hydraulic jacks, can the direction of hydraulic control oil in single-acting system, adopts that the lifting of the jacking gear of hydraulic jack is stable, reliability is high.
Preferably, the high-pressured air cylinder group on described load wagon is six, be divided into two-layer, three every layer be fixed on described load wagon, the maximum working pressure (MOP) that each described high-pressured air cylinder is selected is 25MPa.
This high-pressured air cylinder group adopts 6 gas cylinders, to be connected in parallel on a main line and to be fixed on load wagon, on main line and each gas cylinder inflow point detection tensimeter and switch gas cylinder valve are all installed.According to the flow range of detected object, one or more gas cylinder can be selected.
Preferably, the range of weighing that described electronic balance is selected is 0-600kg, and reading scale division value is 1g.
Preferably, the gases at high pressure used in described high-pressured air cylinder group are pressurized air, and pressurized air cost is lower.
Utilize above-mentioned standard set-up can detect the carrying out of CNG filling machine gas flow, wherein CNG filling machine comprises filling machine body, gas admittance valve, flowmeter, tensimeter, solenoid valve and air filling gun valve, and use and a kind ofly detect the standard set-up that gases at high pressure fill mass rate as above, adopt following steps to detect:
Step one, described standard set-up is connected the air filling gun valve of tested CNG filling machine, described gas admittance valve connects high-pressure air source;
Step 2, by the electronic balance indicating value back to zero in described standard set-up, by the indicating value back to zero of described CNG filling machine;
Step 3, start described jacking gear, described high-pressured air cylinder group be placed on described electronic balance, obtain described high-pressured air cylinder group fill before quality initial value;
Step 4, the gas admittance valve opening CNG filling machine, air filling gun valve, open the gas cylinder valve of described high-pressured air cylinder group, high-pressure air source fills high-pressured air cylinder group;
After step 5, described high-pressured air cylinder group fill, electronic balance weighs described high-pressured air cylinder group, obtain the quality after filling end and fill value, thus obtain described high-pressured air cylinder group quality difference, obtain the flow indicating value of described CNG filling machine simultaneously, wherein fill and completely can be judged by the maximum allowble pressure whether reaching high-pressured air cylinder group;
Step 6, by contrast electronic balance quality difference compared with the flow indicating value of described CNG filling machine, whether meet actual metered standard by CNG filling machine described in the error judgment of the two value.
CNG filling machine described in the utility model (compressed natural gas dispenser, i.e. autoamtic compressed gas filling machine), refer to for filling (or drawing off) compressed natural gas to air container, and with the specialized equipment (being called for short CNG filling machine) of metering and the device such as valuation.Wherein maximum flow is not more than the filling machine of 30kg/min, is called low discharge filling machine; Maximum flow is greater than 30kg/min, and is not more than the filling machine of 70kg/min, is called middle flow filling machine; Maximum flow is greater than the filling machine of 70kg/min, is called large discharge filling machine; Above-mentioned middle flow filling machine, large discharge filling machine, also referred to as adding gas column or discharge column.
A kind ofly detect the standard set-up that gases at high pressure fill mass rate by above-mentioned CNG filling machine is detected, high-pressure air source is to before and after the inflation of CNG filling machine, the front and back difference of the metering indicating value that CNG filling machine carries, and before and after electronic balance, measure the difference of indicating value, error between both contrasts difference, gauge check can be carried out to CNG filling machine flow, the error of this detection can through repeatedly fill gases at high pressure difference to obtain mean value; Due to electronic balance metering method relatively tradition utilize water detection method, its precision is higher, accuracy error is less, can react the metering performance of CNG filling machine more really, the method is simple to operate, reliable and stable, cost is lower.
Utilize above-mentioned standard set-up can detect CNG gas filler measurer flow, wherein CNG gas filler measurer comprises calibrating installation body, inlet valve, mass flowmeter, pressure gauge, display and outlet valve, use and as described above a kind ofly detect the standard set-up that gases at high pressure fill mass rate, adopt following steps to detect:
Step one, described standard set-up is connected the outlet valve of tested described CNG gas filler measurer, described inlet valve connects high-pressure air source;
Step 2, by the electronic balance indicating value back to zero in described standard set-up, by the indicating value back to zero of described display;
Step 3, start described jacking gear, described high-pressured air cylinder group be placed on described electronic balance, obtain described high-pressured air cylinder group fill before quality initial value;
Step 4, the inlet valve opening CNG gas filler measurer, outlet valve, open the gas cylinder valve of described high-pressured air cylinder group, high-pressure air source fills high-pressured air cylinder group;
After step 5, described high-pressured air cylinder group fill, electronic balance weighs described high-pressured air cylinder group, obtain the quality after filling end and fill value, thus obtain described high-pressured air cylinder group quality difference, obtain the flow indicating value of described CNG gas filler measurer simultaneously;
Step 6, by contrast electronic balance quality difference compared with the flow indicating value of described CNG gas filler measurer, whether meet actual metered standard by CNG gas filler measurer described in the error judgment of the two value.
CNG gas filler measurer (full name verification facility by master meter method of compressed natural gas dispenser), it adopts method of standard table principle, the metrological standard unit of examining and determine autoamtic compressed gas filling machine or calibrating, this standard scale generally adopts coriolis mass flowmeters.The measurement standard of this CNG gas filler measurer is detected, is conducive to screening measuring accuracy higher CNG gas filler measurer and CNG filling machine is measured.
Utilize above-mentioned standard set-up can detect high-pressure gas flow meter flow, wherein high-pressure gas flow meter comprises flowmeter bodies, inlet valve, mass flowmeter, pressure gauge, display and outlet valve, use and as described above a kind ofly detect the standard set-up that gases at high pressure fill mass rate, adopt following steps to detect:
Step one, described standard set-up is connected the outlet valve of tested described high-pressure gas flow meter, described inlet valve connects high-pressure air source;
Step 2, by the electronic balance indicating value back to zero in described standard set-up, by the indicating value back to zero of described display;
Step 3, start described jacking gear, described high-pressured air cylinder group be placed on described electronic balance, obtain described high-pressured air cylinder group fill before quality initial value;
Step 4, the inlet valve opening high-pressure gas flow meter, outlet valve, open the gas cylinder valve of described high-pressured air cylinder group, high-pressure air source fills high-pressured air cylinder group;
After step 5, described high-pressured air cylinder group fill, electronic balance weighs described high-pressured air cylinder group, obtain the quality after filling end and fill value, thus obtain described high-pressured air cylinder group quality difference, obtain the flow indicating value of described high-pressure gas flow meter simultaneously;
Step 6, by contrast electronic balance quality difference compared with the flow indicating value of described high-pressure gas flow meter, whether meet actual metered standard by high-pressure gas flow meter described in the error judgment of the two value.
The high-pressure gas flow meter high-pressure gas flow be used in metering high-pressure air source crosses flow during high-pressure gas flow meter, the accurate measurement of high-pressure gas flow meter whether direct relation the flow error of gases at high pressure reality, detect the standard set-up that gases at high pressure fill mass rate by a kind of this high-pressure gas flow meter is examined and determine, can judge the accuracy of measuring of high-pressure gas flow meter, method is simple to operate, reliability is high.
Compared with prior art, the beneficial effects of the utility model:
1, described in the utility modelly a kind ofly detect the standard set-up that gases at high pressure fill mass rate, adopt gases at high pressure as flow detection medium, gases at high pressure are filled by one group of several high-pressured air cylinder group, be seated on electronic balance by the lifting of jacking gear or lower general who has surrendered's high-pressured air cylinder group, electronic balance weighs its gases at high pressure again and fills the of poor quality of front and back, come institute's detected object (as the CNG filling machine in the utility model, high-pressure gas flow meter, CNG gas filler measurer) measured value contrast, measure its error amount and whether meet standard, the method overcome and utilize the uncertainty of original method of standard table filling machine device for on-site calibration to be difficult to the shortcoming improved, meet the demand for development of current high-pressure gas flow instrument, equipment calibrating business, reliability is high, meet current and quite a while inner high voltage gas flow instrument, equipment calibrating business from now on demand for development, its technical merit is compared with domestic similar standard set-up, its flow range is wider, the accuracy of measuring is higher, measuring repeatability is better, its expanded uncertainty reaches 0.05%, and the key technical indexes is in current domestically leading level,
2, jacking gear described in the utility model includes load wagon, is placed on load wagon, conveniently moving by high-pressured air cylinder group; The flexible pipe connecting tee directional control valve of all hydraulic jacks, can the direction of hydraulic control oil in single-acting system, adopts that the lifting of the jacking gear of hydraulic jack is stable, reliability is high;
3, a kind ofly detect that standard set-up that gases at high pressure fill mass rate can connect CNG filling machine respectively, CNG gas filler measurer, high-pressure gas flow meter carry out gauge check to CNG filling machine, CNG gas filler measurer, high-pressure gas flow meter, precision is higher, simple to operate, reliable and stable, but also CNG filling machine can be connected simultaneously, CNG gas filler measurer, high-pressure gas flow meter synchronously detect, efficiency is higher.
Accompanying drawing illustrates:
Fig. 1 described in the utility modelly a kind ofly detects the operating diagram that gases at high pressure fill the standard set-up of mass rate;
Fig. 2 is the syndeton schematic diagram of jacking gear described in the utility model;
Fig. 3 is the structural front view of high-pressured air cylinder group described in the utility model;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is a kind of pipeline system connection diagram detected when standard set-up that gases at high pressure fill mass rate detects CNG filling machine;
Fig. 6 is a kind of pipeline system connection diagram detected when standard set-up that gases at high pressure fill mass rate detects CNG gas filler measurer;
Fig. 7 is a kind of pipeline system connection diagram detected when standard set-up that gases at high pressure fill mass rate detects high-pressure gas flow meter;
Fig. 8 is that a kind of gases at high pressure that detect fill the standard set-up of mass rate simultaneously to pipeline system connection diagram when CNG filling machine, CNG gas filler measurer, high-pressure gas flow meter detection.
Mark in figure:
1, standard set-up, 11, high-pressured air cylinder group, 12, electronic balance, 13, gas cylinder valve, 14, precision manometer, 15, flow indicator, 16, jacking gear, 161, load wagon, 162, hydraulic jack, 163, safety locking valve, 164, flexible pipe, 165, needle-valve, 166, oil path block, 167, tensimeter, 168, threeway directional control valve, 169, oil pump, 2, CNG filling machine, 21, gas admittance valve, 22, flowmeter, 23, air filling gun valve, 24, tensimeter, 25, solenoid valve, 3, CNG gas filler measurer, 31, inlet valve, 32, mass flowmeter, 33, outlet valve, 34, pressure gauge, 35, display, 4, high-pressure gas flow meter, 41, inlet valve, 42, mass flowmeter, 43, outlet valve, 44, pressure gauge, 45, display, 5, high-pressure air source, 6, compressor train, 71, low pressure well, 72, strong well, 8, draft tube, 91, stop valve, 92, switch board, 93, computer data processing system.
Embodiment
Below in conjunction with test example and embodiment, the utility model is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
Specific embodiment 1
As shown in Figure 1, a kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate, comprise several high-pressured air cylinder groups 11, electronic balance 12 and jacking gear 16, jacking gear 16 is as Fig. 2, be for by high-pressured air cylinder group 11 integral elevating, tracheae be also provided with gas cylinder valve 13, precision manometer 14 and flow indicator 15.
The concrete structure of jacking gear 16 as shown in Figure 2, select hydraulic synchronization apparatus for automatically lifting 16, include the load wagon 161 of the provided with wheels being convenient to fixing high-pressured air cylinder group 11, conveniently moving, four hydraulic jacks 162 are provided with bottom load wagon 161, the flexible pipe 164 of each hydraulic jack 162 is provided with safety locking valve 163, all flexible pipes 164 connect an oil path block 166, flexible pipe 164 is also provided with the needle-valve 165 of adjustable discrepancy oil cylinder hydraulic oil flow and the tensimeter 167 of hydraulic pressures can be shown, oil path block 166 connecting tee directional control valve 168, can the direction of hydraulic control oil in single-acting system, threeway directional control valve 168 provides power source by oil pump 169.The lifting of this hydraulic synchronization apparatus for automatically lifting 16 is stable, reliability is high.
As shown in Figure 3,4, high-pressured air cylinder group 11 on load wagon 161 is that six high-pressured air cylinders are connected in parallel on flexible pipe, be divided into two-layer, three every layer be fixed on load wagon 161, the maximum working pressure (MOP) that each high-pressured air cylinder is selected is 25MPa, on main line and each gas cylinder inflow point detection tensimeter and switch gas cylinder valve 13 are all installed, according to the flow range of detected object, one or more gas cylinder can be selected.In addition, the gases at high pressure used in high-pressured air cylinder group 11 are pressurized air, and pressurized air cost is lower.
The range of weighing that above-mentioned electronic balance 12 is selected is 0-600kg, and reading scale division value is 1g.
Utilize hydraulic synchronization apparatus for automatically lifting 16 and wide range pin-point accuracy electronic balance 12 realize high-pressure gas bottle group fill the automatic weighing of gases at high pressure, its principle of work is summarized as follows: in discharge high-pressured air cylinder inner high voltage gas to measuring method, each flow rate zone is to the Preliminary pressure-filled required by high-pressured air cylinder, remove frost and the water of gases at high pressure bottle surface, operation hydraulic synchronous lifting device 16 makes high-pressure gas bottle group load wagon 161 lift away from electronic balance 12 table top, electronic balance 12 makes zero, again operating hydraulic synchronous lifting device 16 makes high-pressure gas bottle group load wagon 161 be down to electronic balance 12 table top, record initial weighing value, open access point and fill gases at high pressure to rated pressure to high-pressured air cylinder group, disconnect access point, end of record weighing value, what the difference of twice weighing was gases at high pressure fills value.Repeat above-mentioned steps, the flow rate zone required according to measuring method and pendulous frequency thereof complete whole measurement successively.
Standard set-up 1 described in the utility model, adopt gases at high pressure as flow detection medium, gases at high pressure are filled by one group of several high-pressured air cylinder group 11, be seated on electronic balance 12 by the lifting of jacking gear 16 or lower general who has surrendered's high-pressured air cylinder group 11, electronic balance 12 weighs its gases at high pressure again and fills the of poor quality of front and back, the measured value of institute's detected object (as the CNG filling machine in the utility model, high-pressure gas flow meter, CNG gas filler measurer) is contrasted, measures its error amount and whether meet standard; The method overcome and utilize the uncertainty of original method of standard table filling machine device for on-site calibration to be difficult to the shortcoming improved, meet the demand for development of current high-pressure gas flow instrument, equipment calibrating business, its technical merit is compared with domestic similar standard set-up, flow range is wider, precision is higher, detect repeatability higher, its expanded uncertainty reaches 0.05%, and reliability is high.
Specific embodiment 2
As shown in Figure 5, the utility model additionally provides a kind ofly examines and determine the detection of gas flow rate method that object is CNG filling machine 2, wherein CNG filling machine 2 comprises filling machine body, gas admittance valve 21, flowmeter 22, tensimeter 24, solenoid valve 25 and air filling gun valve 23, and use and a kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate described above, adopt following steps to detect:
Step one, standard set-up 1 is connected the air filling gun valve 23 of tested CNG filling machine 2, gas admittance valve 21 connects high-pressure air source 5, selects pressurized air as high-pressure air source 5;
Step 2, by the electronic balance 12 indicating value back to zero in standard set-up 1, by the indicating value back to zero of CNG filling machine 2;
Step 3, start jacking gear 16, high-pressured air cylinder group 11 is placed on electronic balance 12, obtain high-pressured air cylinder group 11 fill before quality initial value;
Step 4, the gas admittance valve 21 opening CNG filling machine, air filling gun valve 23, open the gas cylinder valve 13 of high-pressured air cylinder group 11, and high-pressure air source 5 pairs of high-pressured air cylinder groups 11 fill;
After step 5, high-pressured air cylinder group 11 fill, electronic balance 12 pairs of high-pressured air cylinder groups 11 weigh, obtain the quality after filling end and fill value, thus obtain high-pressured air cylinder group 11 quality difference, obtain the flow indicating value of CNG filling machine 2 simultaneously, wherein fill and completely can be judged by the maximum allowble pressure whether reaching high-pressured air cylinder group 11;
Step 6, by contrast electronic balance 12 quality difference compared with the flow indicating value of CNG filling machine 2, whether meet actual metered standard by the error judgment CNG filling machine of the two value.
The wherein control methods of above-mentioned steps six, as follows in the method for operating of actual mechanical process:
1) when the maximum allowble pressure that charge pressure is in high-pressured air cylinder group 11 controls model, stop filling, record detected object indicating value, records the filling weight indicating value of high-pressure gas flow standard set-up 1 simultaneously;
2) error of indication E that the jth of detected object in R (i) flow district time is measured is calculated as follows ij:
E ij = Q ij - ( Q s ) ij ( Q s ) × 100 % - - - ( 1 )
In formula:
E ij---the error of indication that R (i) flow district jth time is measured, unit is %;
Q ij---R (i) flow district jth time measures the filling weight indicating value of detected object, and unit is kg;
(Q s) ij---the filling weight that R (i) flow district jth time measures high-pressure gas flow standard set-up 1 shows
Value, unit is kg;
I---flow district sequence number, i=1 ~ 3;
J---pendulous frequency sequence number, j=1 ~ 6;
3) error of indication E of detected object in R (i) flow district is calculated as follows i:
E i = 1 n Σ j = 1 n E ij - - - ( 2 )
In formula:
E i---the error of indication in R (i) flow district, unit is %;
N---pendulous frequency; N=6;
4) error of indication E of detected object is calculated as follows:
E=±|E i| max(3)
In formula:
The error of indication of E---detected object, unit is %.
5) according to the error of indication in each flow district, the measuring repeatability (E of detected object in R (i) flow district is calculated as follows r) i:
( E r ) i = Σ j = 1 n ( E ij - E i ) 2 n - 1 × 100 % - - - ( 4 )
In formula:
(E r) i---the measuring repeatability in R (i) flow district, unit is %;
6) the measuring repeatability E of detected object is calculated as follows r:
E r=[(E r) i] max(5)
In formula:
E r---the measuring repeatability of detected object, unit is %.
The judgment basis whether qualified to testing result is the corresponding national standard of detected object or national metrological verification regulations or calibrating standard.A kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate by above-mentioned CNG filling machine 2 is detected, before and after high-pressure air source 5 pairs of CNG filling machines 2 are inflated, the front and back difference of the metering indicating value that CNG filling machine 2 carries, and before and after electronic balance 12, measure the difference of indicating value, error between both contrasts difference, gauge check can be carried out to CNG filling machine 2 flow, the error of this detection can through repeatedly fill gases at high pressure difference to obtain mean value; Due to electronic balance 12 metering method relatively tradition utilize water detection method, its precision is higher, accuracy error is less, can react the measuring accuracy of CNG filling machine 2 more really, the method is simple to operate, reliable and stable, cost is lower.
Specific embodiment 3
As shown in Figure 6, the utility model additionally provides a kind ofly examines and determine the detection method that object is CNG gas filler measurer 3 flow, wherein CNG gas filler measurer 3 comprises calibrating installation body, inlet valve 31, mass flowmeter 32, pressure gauge 34, display 35 and outlet valve 33, use and as described above a kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate, adopt following steps to detect:
Step one, standard set-up 1 is connected the outlet valve 33 of tested described CNG gas filler measurer 3, described inlet valve 31 connects high-pressure air source 5;
Step 2, by the electronic balance 12 indicating value back to zero in standard set-up 1, by the indicating value back to zero of display 35;
Step 3, start jacking gear 16, high-pressured air cylinder group 11 is placed on electronic balance 12, obtain high-pressured air cylinder group 11 fill before quality initial value;
Step 4, the inlet valve 31 opening CNG gas filler measurer 3, outlet valve 33, open the gas cylinder valve 13 of high-pressured air cylinder group 11, and high-pressure air source 5 pairs of high-pressured air cylinder groups 11 fill;
After step 5, high-pressured air cylinder group 11 fill, electronic balance 12 pairs of high-pressured air cylinder groups 11 weigh, obtain the quality after filling end and fill value, thus obtain high-pressured air cylinder group 11 quality difference, obtain the flow indicating value of CNG gas filler measurer 3 simultaneously;
Step 6, by contrast electronic balance 12 quality difference compared with the flow indicating value of described CNG gas filler measurer 3, whether meet actual metered standard by the error judgment CNG gas filler measurer 3 of the two value.
The wherein control methods of above-mentioned steps six, method in the method for operating of actual mechanical process is as specific embodiment 2.
CNG gas filler measurer 3 (full name verification facility by master meter method of compressed natural gas dispenser), it adopts method of standard table principle, to the metrological standard unit 1 that CNG filling machine 2 is examined and determine or calibrated, this standard scale generally adopts coriolis mass flowmeters.The measurement standard of this CNG gas filler measurer 3 is detected, is conducive to the screening higher CNG gas filler measurer of measuring accuracy 3 pairs of CNG filling machines 2 and measures.
Specific embodiment 4
As shown in Figure 7, the utility model additionally provides a kind ofly examines and determine the detection method that object is high-pressure gas flow meter 4 flow, wherein high-pressure gas flow meter 4 comprises flowmeter bodies, inlet valve 41, mass flowmeter 42, pressure gauge 44, display 45 and outlet valve 43, use and a kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate described above, adopt following steps to detect:
Step one, standard set-up 1 is connected the outlet valve of tested high-pressure gas flow meter 4, inlet valve 41 connects high-pressure air source 5;
Step 2, by the electronic balance 12 indicating value back to zero in standard set-up 1, by the indicating value back to zero of display 45;
Step 3, start jacking gear 16, high-pressured air cylinder group 11 is placed on described electronic balance 12, obtain high-pressured air cylinder group 11 fill before quality initial value;
Step 4, the inlet valve 41 opening high-pressure gas flow meter 4, outlet valve 43, open the gas cylinder valve 13 of high-pressured air cylinder group 11, and high-pressure air source 5 pairs of high-pressured air cylinder groups 11 fill;
After step 5, high-pressured air cylinder group 11 fill, electronic balance 12 pairs of high-pressured air cylinder groups 11 weigh, and obtain the quality after filling end and fill value, thus obtain high-pressured air cylinder group 11 quality difference, obtain the flow indicating value of high-pressure gas flow meter 4 simultaneously;
Step 6, by contrast electronic balance 12 quality difference compared with the flow indicating value of high-pressure gas flow meter 4, whether meet actual metered standard by the error judgment high-pressure gas flow meter 4 of the two value.
The wherein control methods of above-mentioned steps six, in the method for operating of actual mechanical process as shown in specific embodiment 2.This high-pressure gas flow meter 4 high-pressure gas flow be used in metering high-pressure air source 5 crosses flow during high-pressure gas flow meter 4, the accurate measurement of high-pressure gas flow meter 4 whether direct relation the flow error of gases at high pressure reality, detect the standard set-up 1 that gases at high pressure fill mass rate by a kind of this high-pressure gas flow meter 4 is examined and determine, can judge the accuracy of measuring of high-pressure gas flow meter 4, method is simple to operate, reliability is high.
Specific embodiment 5
Except in above-mentioned specific embodiment 2-4, a kind ofly detect the standard set-up 1 that gases at high pressure fill mass rate and can connect CNG filling machine 2 respectively, CNG gas filler measurer 3, high-pressure gas flow meter 4 comes respectively to CNG filling machine 2, CNG gas filler measurer 3, high-pressure gas flow meter 4 carries out gauge check, precision is higher, simple to operate, reliable and stable, standard set-up 1 can also be connected CNG filling machine 2 simultaneously, CNG gas filler measurer 3, high-pressure gas flow meter 4 synchronously detects, as shown in Figure 8, compressor train 6 connects strong well 72 and low pressure well 71 respectively by two draft tube 8, high-pressure gas flow meter 4 and CNG gas filler measurer 3 is connected in parallel from low pressure well 71 draft tube 8 out, CNG filling machine 2 is connected from strong well 72 draft tube 8 out, connected by this stop valve 91 between two draft tube 8, all high-pressure gas flow meters 4, CNG gas filler measurer 3, CNG filling machine 2 connects above-mentioned standard set-up 1 simultaneously, by the control of switch board 92 pairs of stop valves 91, pressurized air can be opened separately or simultaneously and flow through high-pressure gas flow meter 4, CNG gas filler measurer 3, one or more in CNG filling machine 2, realize synchronous detection, the benefit of synchronous detection be can computer data handling system 93 to error amount mass simultaneous described above process, efficiency is higher.

Claims (5)

1. one kind is detected the standard set-up (1) that gases at high pressure fill mass rate, it is characterized in that, comprise several high-pressured air cylinder groups (11), electronic balance (12) and jacking gear (16), all described high-pressured air cylinder groups (11) are connected in parallel by tracheae, described jacking gear (16), for by described high-pressured air cylinder group (11) integral elevating, described tracheae is also provided with gas cylinder valve (13).
2. according to claim 1ly a kind ofly detect the standard set-up (1) that gases at high pressure fill mass rate, it is characterized in that, described jacking gear (16) comprises the load wagon with wheel (161) can putting described high-pressured air cylinder group (11), described load wagon (161) bottom is provided with several hydraulic jacks (162), the flexible pipe (164) of each described hydraulic jack (162) is provided with the needle-valve (165) of adjustable hydraulic oil mass, the flexible pipe (164) of all described hydraulic jacks (162) connects a threeway directional control valve (168) and oil pump (169).
3. according to claim 2ly a kind ofly detect the standard set-up (1) that gases at high pressure fill mass rate, it is characterized in that, high-pressured air cylinder group (11) on described load wagon is six, be divided into two-layer, three every layer be fixed on described load wagon (161), the maximum working pressure (MOP) that each described high-pressured air cylinder is selected is 25MPa.
4. according to claim 1ly a kind ofly detect the standard set-up (1) that gases at high pressure fill mass rate, it is characterized in that, the range of weighing that described electronic balance (12) is selected is 0 ~ 600kg, and reading scale division value is 1g.
5. according to claim 1ly a kind ofly detect the standard set-up (1) that gases at high pressure fill mass rate, it is characterized in that, the gases at high pressure used in described high-pressured air cylinder group (11) are pressurized air.
CN201420517628.4U 2014-09-10 2014-09-10 A kind ofly detect the standard set-up that gases at high pressure fill mass rate Expired - Fee Related CN204241054U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420517628.4U CN204241054U (en) 2014-09-10 2014-09-10 A kind ofly detect the standard set-up that gases at high pressure fill mass rate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420517628.4U CN204241054U (en) 2014-09-10 2014-09-10 A kind ofly detect the standard set-up that gases at high pressure fill mass rate

Publications (1)

Publication Number Publication Date
CN204241054U true CN204241054U (en) 2015-04-01

Family

ID=52770536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420517628.4U Expired - Fee Related CN204241054U (en) 2014-09-10 2014-09-10 A kind ofly detect the standard set-up that gases at high pressure fill mass rate

Country Status (1)

Country Link
CN (1) CN204241054U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180861A (en) * 2014-09-10 2014-12-03 中国测试技术研究院流量研究所 Standard device and measuring method using mass method for detecting high-pressure gas filling flow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180861A (en) * 2014-09-10 2014-12-03 中国测试技术研究院流量研究所 Standard device and measuring method using mass method for detecting high-pressure gas filling flow

Similar Documents

Publication Publication Date Title
CN101470016B (en) Apparatus for measuring volume by built-in method
CN106501155A (en) Rock core gas liquid two purpose permeability test device and reservoir damage evaluation method
CN102590016B (en) Measurement method of soil moisture characteristic curve measurement device
CN206479237U (en) A kind of water meter self-checking device
CN102937470A (en) Device and method for measuring container volume by using pipeline space
CN101526343B (en) Correction method for weighing results of hydraulic pressure test deflection of air bottle
CN104180861A (en) Standard device and measuring method using mass method for detecting high-pressure gas filling flow
CN201034763Y (en) Gas-actuated relay calibration stand
CN108050394A (en) Fuel gas pipeline leakage based on sound pressure signal identification detects positioning experiment platform
CN101476962B (en) Piston type or buoy type pressure meter effective area measuring method
CN102062629B (en) Double-tank weighing method for gas flow standard device by mass-time method
CN202002770U (en) Force sensor calibration and comparison device for engine dynamometer
CN204241054U (en) A kind ofly detect the standard set-up that gases at high pressure fill mass rate
CN105387339B (en) CNG on-site proving methods
CN103453968B (en) The measurement and examination method of liquefied natural gas aerating machine
CN111289064A (en) Online calibrating device and method for metering performance of hydrogenation machine
CN102889906B (en) Single-pipe gas relay detecting bench, centering clamping mechanism and detection method thereof
CN202836631U (en) Single-pipe buchholz relay detecting platform and centring clamping mechanism special for buchholz relay detection
CN207923246U (en) Multi-epitope is the same as inspection automatic water device for mark integrated system
CN206300877U (en) A kind of specific surface of rock measurement apparatus
CN206669335U (en) A kind of CNG filling machines magnitude tracing system
CN201408057Y (en) Rapid checking device of refueling machine
CN103411790B (en) Compressed air is as the method for autoamtic compressed gas filling machine detection medium
CN212030697U (en) Online calibrating device of hydrogenation machine measurement performance
CN207066556U (en) Low temperature mass flowmenter performance testing device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150401

Termination date: 20170910

CF01 Termination of patent right due to non-payment of annual fee