CN106595953B - Medical oxygen class measurement instrument metrological standard unit - Google Patents
Medical oxygen class measurement instrument metrological standard unit Download PDFInfo
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- CN106595953B CN106595953B CN201611190664.4A CN201611190664A CN106595953B CN 106595953 B CN106595953 B CN 106595953B CN 201611190664 A CN201611190664 A CN 201611190664A CN 106595953 B CN106595953 B CN 106595953B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Medical oxygen class measurement instrument metrological standard unit, belong to the field of medical instrument technology, it is greater than the oxygen bottle of 5MPa including bottle pressure, power supply and oxygen pipeline, the oxygen pipeline includes lowpressure stream meter calibrating verification pipeline, high pressure float flow meter calibrating verification pipeline, the mesohigh pressure gauge calibrating verification pipeline of 0-4MPa low pressure gauge calibrating verification pipeline below and 4-30MPa, the oxygen bottle is connect with intake interface, pipeline connects above-mentioned four calibratings verification pipeline after being drawn by air inlet pressure sensor, four calibratings verification pipeline is connected by parallel way, pressure calibration and flow standard device are combined into one by the present invention, realize detection integration, portability, using advanced electronic equipment, precision is higher and shatter-proof anti-topples over, exempt on-site assembly simultaneously, it substantially increases Working efficiency and convenience.
Description
Technical field
The present invention relates to medical oxygen class measurement instrument metrological standard units, specifically by pressure calibration and flow
Standard carries out integrated design, while the higher medical oxygen class measurement instrument metrological standard unit of precision, belongs to Medical treatment device
Tool technical field.
Background technique
At present for elastic element formula general purpose pressure gauge, buoy type oxygen absorber and medical oxygen used in the fields such as hospital
The measurement instruments such as gas inhalator are all included in state compulsion calibrating catalogue, each province, the existing standard in metering scientific research institutes of city point
It is not independent pressure calibration and independent flow standard device, pressure calibration portability difference used and on-site assembly time
Long, pointer precision pressure gauge replacement trouble, flow standard device used is suspended body flowmeter, and service life is short, often to be replaced,
The precision of standard utensil is high simultaneously, and when carrying cannot have vibration and topple over, and brings many inconvenience to the verification at scene.
Summary of the invention
In view of the above-mentioned deficiencies, the present invention provides medical oxygen class measurement instrument metrological standard unit, the medical oxygens
Pressure calibration and flow standard device are combined into one by class measurement instrument measuring accuracy calibration equipment, realize detection integration, just
Taking, using advanced electronic equipment, precision it is higher and it is shatter-proof it is anti-topple over, while exempting on-site assembly.
The present invention is achieved by the following technical solutions: medical oxygen class measurement instrument metrological standard unit, including bottle
Pressure be greater than 5MPa oxygen bottle, power supply and oxygen pipeline, the oxygen pipeline include lowpressure stream meter calibrating verification pipeline,
The middle height of high pressure float flow meter calibrating verification pipeline, 0-4MPa low pressure gauge calibrating verification pipeline and 4-30MPa below
Pressure pressure table calibrating verification pipeline, the oxygen bottle is connect with intake interface, after pipeline is drawn by air inlet pressure sensor
Above-mentioned four calibratings verification pipeline is connected, four calibratings verification pipeline is connected by parallel way, it is characterised in that:
In the lowpressure stream meter calibrating verification pipeline, 1 input terminal of pressure reducer connects air inlet pressure sensor, output end
Terminal pressure sensor is connected, terminal pressure sensor connects flowmeter terminal, and lowpressure stream meter uses inserted mode connection flow
The delivery outlet of meter terminal interface, lowpressure stream meter is connected to proving flowmeter import, proving flowmeter outlet and mark with dedicated pipe
The connection of constant current quantity sensor；
In the high pressure float flow meter calibrating verification pipeline, float flow meter pet valve input terminal connects admission pressure
Sensor, output end connect flowrator interface, and because high pressure float flow meter has included pressure reducer, operating pressure is
Between 1.0-15MPa, high pressure float flow meter connects flowrator interface using inserted mode, high pressure float flow meter
Delivery outlet is connected to proving flowmeter import with dedicated pipe, and proving flowmeter outlet is connect with calibrational capacity sensor；
High and low voltage exchange valve input terminal connects air inlet pressure sensor, and output end connects 0-4MPa low pressure below
The mesohigh pressure gauge calibrating verification pipeline of table calibrating verification pipeline and 4-30MPa；
In 0-4MPa low pressure gauge calibrating verification pipeline below, 2 input terminal of pressure reducer connects high and low crush-cutting
Valve is changed, output end connects low pressure and shows that sensor, low pressure show that sensor connects low-pressure meter pet valve, low-pressure meter examination
Valve connection low-pressure meter nominal pressure sensor is tested, low-pressure meter nominal pressure sensor output is separately connected low pressure meter connector and low
Press table vent valve；
In the mesohigh pressure gauge calibrating verification pipeline of the 4-30MPa, 3 input terminal of pressure reducer connects high and low crush-cutting
Valve is changed, output end connects pneumatic type gas booster, and pneumatic type gas booster connects high pressure energy accumulating buffer, and high pressure energy accumulating is slow
It rushes device connection boost pressure and shows that sensor, boost pressure show that sensor connects high pressure gauge pet valve, high pressure gauge pet valve connects
High pressure gauge nominal pressure sensor is connect, high pressure gauge nominal pressure sensor output is separately connected high pressure meter connector and high pressure gauge is put
Air valve.
Setting in standard set-up is verified, pressure precision includes 0.4 grade, 1.6 grades, 2.5 grades, 4 grades of totally four accuracy classes；Stream
Accuracy of measurement includes 1.6 grades, 2.5 grades, 4 grades of totally three accuracy classes.
Usefulness of the present invention is, compared with prior art, medical oxygen class measurement instrument measurement criteria of the invention
Pressure calibration and flow standard device are combined into one by device, are realized detection integration, portability, are set using advanced electronics
It is standby, precision it is higher and it is shatter-proof it is anti-topple over, while exempting on-site assembly, greatly improve work efficiency and convenience.
Detailed description of the invention
Attached drawing 1 is design schematic diagram of the present invention, and attached drawing 2 is air inlet pressure sensor partial enlarged view of the present invention.
In figure, 1, intake interface；2, air inlet pressure sensor；3, pressure reducer 1；4, terminal pressure sensor；5, flowmeter
Terminal interface；6, proving flowmeter import；7, calibrational capacity sensor；8, float flow meter pet valve；9, flowrator
Interface；10, high and low voltage exchange valve；11, pressure reducer 2；12, low pressure shows sensor；13, low-pressure meter pet valve；14, low
Press table nominal pressure sensor；15, low pressure meter connector；16, low-pressure meter vent valve；17, pressure reducer 3；18, pneumatic type gas boosting
Device；19, high pressure energy accumulating buffer；20, boost pressure shows sensor；21, high pressure gauge pet valve；22, high pressure gauge nominal pressure
Sensor；23, high pressure meter connector；24, high pressure gauge vent valve.
Specific embodiment
Medical oxygen class measurement instrument metrological standard unit is greater than oxygen bottle, power supply and the oxygen of 5MPa including bottle pressure
Pipeline, the oxygen pipeline include lowpressure stream meter calibrating verification pipeline, high pressure float flow meter calibrating verification pipeline, 0-
The mesohigh pressure gauge calibrating verification pipeline of 4MPa low pressure gauge calibrating verification pipeline below and 4-30MPa, the oxygen
Gas cylinder is connect with intake interface 1, and pipeline connects above-mentioned four calibratings and verifies pipeline, institute after being drawn by air inlet pressure sensor 2
The four calibratings verification pipeline stated is connected by parallel way, it is characterised in that:
In the lowpressure stream meter calibrating verification pipeline, pressure reducer 1 (3) input terminal connects air inlet pressure sensor 2, defeated
Outlet connects terminal pressure sensor 4, and terminal pressure sensor 4 connects flowmeter terminal, and lowpressure stream meter uses inserted mode
Flowmeter terminal interface 5 is connected, the delivery outlet of lowpressure stream meter is connected to proving flowmeter import 6, proving flowmeter with dedicated pipe
Outlet is connect with calibrational capacity sensor 7, pressure needed for the acquisition of terminal pressure sensor 4 and display lowpressure stream meter,
The acquisition of calibrational capacity sensor 7 and display actual standard flow, reads phase with actual standard flow and lowpressure stream meter
Compare, whether qualified can examine and determine and verify measured stream meter；
In the high pressure float flow meter calibrating verification pipeline, 8 input terminal of float flow meter pet valve connects air inlet pressure
Force snesor 2, output end connects flowrator interface 9, because high pressure float flow meter has included pressure reducer, operating pressure
Between 1.0-15MPa, high pressure float flow meter connects flowrator interface 9, high pressure buoy flow using inserted mode
The delivery outlet of meter is connected to proving flowmeter import 6 with dedicated pipe, and proving flowmeter outlet is connect with calibrational capacity sensor 7, institute
The acquisition of calibrational capacity sensor 7 stated and display actual standard flow, with actual standard flow compared with lowpressure stream meter reading
Compared with whether qualified can examining and determine and verify measured stream meter；
10 input terminal of high and low voltage exchange valve connects air inlet pressure sensor 2, and output end connects 0-4MPa low pressure pressure below
The mesohigh pressure gauge calibrating verification pipeline of power table calibrating verification pipeline and 4-30MPa；
In 0-4MPa low pressure gauge calibrating verification pipeline below, the connection of pressure reducer 2 (11) input terminal is high and low
Switching valve 10 is pressed, output end connects low pressure and shows that sensor 12, low pressure show that sensor 12 connects low pressure watch test
Valve 13, low-pressure meter pet valve 13 connect low-pressure meter nominal pressure sensor 14,14 output end of low-pressure meter nominal pressure sensor point
Not Lian Jie low pressure meter connector 15 and low-pressure meter vent valve 16, switch the high and low voltage exchange valve 10 to low-pressure side, described in adjusting
Pressure reducer 2 (11), pressure is adjusted to 0-4MPa, the low pressure shows the acquisition of sensor 12 and display low pressure gauge
Required pressure is filled to low pressure gauge on the low pressure meter connector 15, opens the low-pressure meter pet valve 13, described
The acquisition of low-pressure meter nominal pressure sensor 14 and display actual standard low pressure, adjust the low-pressure meter vent valve 16, can
Low pressure gauge is set to examine and determine and verify on each pressure stage, with actual standard low pressure compared with low pressure meter reading
Compared with whether qualified can examining and determine and verify the pressure gauge；
In the mesohigh pressure gauge calibrating verification pipeline of the 4-30MPa, the connection of pressure reducer 3 (17) input terminal is high and low
Switching valve 10 is pressed, output end connects pneumatic type gas booster 18, and pneumatic type gas booster 18 connects high pressure energy accumulating buffer
19, high pressure energy accumulating buffer 19 connects boost pressure and shows that sensor 20, boost pressure show that sensor 20 connects high pressure gauge examination
Valve 21 is tested, high pressure gauge pet valve 21 connects high pressure gauge nominal pressure sensor 22,22 output end of high pressure gauge nominal pressure sensor
It is separately connected high pressure meter connector 23 and high pressure gauge vent valve 24, switches the high and low voltage exchange valve 10 to high-pressure side, adjusts institute
The pressure reducer 3 (17) stated is increased pressure in the high pressure energy accumulating buffer 19 using the pneumatic type gas booster 18
It is depressed into 4-30MPa, to meet the calibrating and verification condition to 30MPa or less high pressure gauge, the boost pressure display sensor
Pressure needed for the high-pressure manometer of 20 acquisitions and display pressurization, is filled to high-pressure manometer on the high pressure meter connector 23, opens
Open the high pressure gauge pet valve 21, the acquisition of high pressure gauge nominal pressure sensor 22 and display actual standard high pressure pressure
Power adjusts the high pressure gauge vent valve 24, high-pressure manometer can be made to examine and determine and verify on each pressure stage, use actual standard
The pressure gauge can be examined and determine and be verified to high-pressure whether qualified compared with high-pressure meter reading.
Setting in standard set-up is verified, pressure precision includes 0.4 grade, 1.6 grades, 2.5 grades, 4 grades of totally four accuracy classes；Stream
Accuracy of measurement includes 1.6 grades, 2.5 grades, 4 grades of totally three accuracy classes, selects pressure gauge and flowmeter respectively in calibrating and verification
Marked accuracy class, embedded-type electric brain system can the automatic discrimination pressure gauge that is accredited and verifies and flowmeter whether close
Lattice, built-in printer will get label automatically, and system automatically saves the data for examining and determine and verifying pressure gauge and flowmeter, with
It is for future reference.
Usefulness of the present invention is, compared with prior art, medical oxygen class measurement instrument measurement criteria of the invention
Pressure calibration and flow standard device are combined into one by device, are realized detection integration, portability, are set using advanced electronics
It is standby, precision it is higher and it is shatter-proof it is anti-topple over, while exempting on-site assembly, greatly improve work efficiency and convenience.
For the ordinary skill in the art, introduction according to the present invention, do not depart from the principle of the present invention with
In the case where spirit, changes, modifications that embodiment is carried out, replacement and variant still fall within protection scope of the present invention it
It is interior.
Claims (2)
1. medical oxygen class measurement instrument metrological standard unit is greater than oxygen bottle, power supply and the oxygen hose of 5MPa including bottle pressure
Road, the oxygen pipeline include lowpressure stream meter calibrating verification pipeline, high pressure float flow meter calibrating verification pipeline, 0-4MPa
The mesohigh pressure gauge calibrating verification pipeline of low pressure gauge calibrating verification pipeline and 4-30MPa below, the oxygen steel
Bottle is connect with intake interface (1), and pipeline connects above-mentioned four calibratings and verifies pipeline, institute after being drawn by air inlet pressure sensor (2)
The four calibratings verification pipeline stated is connected by parallel way, it is characterised in that:
In the lowpressure stream meter calibrating verification pipeline, pressure reducer 1 (3) input terminal connects air inlet pressure sensor (2), output
End connection terminal pressure sensor (4), terminal pressure sensor (4) connect flowmeter terminal, and lowpressure stream meter uses insertion side
Formula connects flowmeter terminal interface (5), and the delivery outlet of lowpressure stream meter is connected to proving flowmeter import (6) with dedicated pipe, demarcates
Flowmeter outlet is connect with calibrational capacity sensor (7)；
In the high pressure float flow meter calibrating verification pipeline, float flow meter pet valve (8) input terminal connects admission pressure
Sensor (2), output end connects flowrator interface (9), because high pressure float flow meter has included pressure reducer, work pressure
Power is between 1.0-15MPa, and high pressure float flow meter is using inserted mode connection flowrator interface (9), high pressure buoy
The delivery outlet of flowmeter is connected to proving flowmeter import (6) with dedicated pipe, proving flowmeter outlet and calibrational capacity sensor (7)
Connection；
High and low voltage exchange valve (10) input terminal connects air inlet pressure sensor (2), and output end connects 0-4MPa low pressure pressure below
The mesohigh pressure gauge calibrating verification pipeline of power table calibrating verification pipeline and 4-30MPa；
In 0-4MPa low pressure gauge calibrating verification pipeline below, pressure reducer 2 (11) input terminal connects high and low crush-cutting
It changes valve (10), output end connects low pressure and shows sensor (12), and low pressure shows sensor (12) connection low-pressure meter examination
It tests valve (13), low-pressure meter pet valve (13) connects low-pressure meter nominal pressure sensor (14), low-pressure meter nominal pressure sensor
(14) output end is separately connected low pressure meter connector (15) and low-pressure meter vent valve (16)；
In the mesohigh pressure gauge calibrating verification pipeline of the 4-30MPa, pressure reducer 3 (17) input terminal connects high and low crush-cutting
It changes valve (10), output end connects pneumatic type gas booster (18), and pneumatic type gas booster (18) connects high pressure energy accumulating buffering
Device (19), high pressure energy accumulating buffer (19) connect boost pressure and show sensor (20), and boost pressure shows sensor (20) even
It connects high pressure gauge pet valve (21), high pressure gauge pet valve (21) connects high pressure gauge nominal pressure sensor (22), high pressure gauge calibration pressure
Force snesor (22) output end is separately connected high pressure meter connector (23) and high pressure gauge vent valve (24).
2. medical oxygen class measurement instrument metrological standard unit as described in claim 1, which is characterized in that verification standard set-up
Interior setting, pressure precision include 0.4 grade, 1.6 grades, 2.5 grades, 4 grades of totally four accuracy classes；Flow accuracy includes 1.6 grades, 2.5
Grade, 4 grades of totally three accuracy classes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611190664.4A CN106595953B (en) | 2016-12-21 | 2016-12-21 | Medical oxygen class measurement instrument metrological standard unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611190664.4A CN106595953B (en) | 2016-12-21 | 2016-12-21 | Medical oxygen class measurement instrument metrological standard unit |
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| CN106595953A CN106595953A (en) | 2017-04-26 |
| CN106595953B true CN106595953B (en) | 2019-01-29 |
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| CN201611190664.4A Active CN106595953B (en) | 2016-12-21 | 2016-12-21 | Medical oxygen class measurement instrument metrological standard unit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328571A (en) * | 2017-08-24 | 2017-11-07 | 淮安市计量测试所 | A kind of oxygen inhalation apparatus detector and detection method |
| CN108709687A (en) * | 2018-06-06 | 2018-10-26 | 青岛海纳光电环保有限公司 | A kind of petroleum vapor recovery detector calibrating installation and calibration method |
| CN110319973A (en) * | 2019-08-01 | 2019-10-11 | 红旗仪表（长兴）有限公司 | A kind of integration air pressure calibration equipment and method |
| CN110987111B (en) * | 2019-12-05 | 2020-12-22 | 山东省医疗器械产品质量检验中心 | System for testing flow control characteristics of infusion apparatus under dynamic and static conditions |
| CN111121869A (en) * | 2019-12-25 | 2020-05-08 | 南京信息职业技术学院 | Oxygen inhaler calibration detection device |
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| CN102410904A (en) * | 2011-08-10 | 2012-04-11 | 南车石家庄车辆有限公司 | CO2 pressure reducer overall calibration method |
| CN102435268A (en) * | 2011-11-02 | 2012-05-02 | 中国核工业二三建设有限公司 | Calibration device for gas flow meter and method thereof |
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