CN108593056A - A kind of digital gas meter calibrating installation and calibration method - Google Patents
A kind of digital gas meter calibrating installation and calibration method Download PDFInfo
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- CN108593056A CN108593056A CN201810401863.8A CN201810401863A CN108593056A CN 108593056 A CN108593056 A CN 108593056A CN 201810401863 A CN201810401863 A CN 201810401863A CN 108593056 A CN108593056 A CN 108593056A
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- gas meter
- digital gas
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- ultrasonic flowmeter
- connecting tube
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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)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of digital gas meter calibrating installations and method that digital gas meter examines and determine field,Device includes workbench,Workbench is equipped with supporting plate,Water tank is provided at the top of supporting plate,And the top of four groups of trays is disposed with air blower respectively from left side to right,First ultrasonic flowmeter,Digital gas meter to be examined and determine and the second ultrasonic flowmeter,Top at left and right sides of the T-shaped link is both provided with universal joint,The bottom of the universal joint is provided with nozzle,Flowing water mouth is offered on the workbench,The inner cavity activity of the flowing water mouth is plugged with filter device,Pass through the first ultrasonic flowmeter,The numerical value recorded on digital gas meter to be examined and determine and the second ultrasonic flowmeter judges whether the leakproofness of digital gas meter to be examined and determine is intact,The apparatus structure is simple,It is small,The leakproofness of digital gas meter can effectively be examined and determine,And maintenance personal is facilitated to carry,The leakproofness of calibrating digital gas meter in time,Investigate gas leakage point.
Description
Technical field
The present invention relates to digital gas meters to examine and determine field, specially a kind of digital gas meter calibrating installation and calibration method.
Background technology
With the improvement of living standards with the reinforcement of environmental consciousness, the daily fuel cooked of people is from firewood, coal
Etc. serious waste of resources, seriously polluted conventional energy resource be changed into using natural gas and coal gas, the even clean energy resourcies such as electricity.
Digital gas meter will play its effect herein, there is its automatic accumulating function so that those use natural gas or pipe
Road coal gas other, easily can know how much gas used, so as to can according to monthly consumption combustion gas cubic meter number pay the fees,
The phenomenon that being often able to encounter gas leakage in daily repair can only be with when used all methods but can not find out leak source
It is gas meter, flow meter leakage by means of working experience conjecture, needs replacing new gas meter, flow meter, carries out hanging pressure test again, due to not having a kind of needle
To digital gas meter whether the detection device of gas leakage, old digital gas meter needs to return to the calibrating of factory being sealed property and can only make
With the detection method of this replacement, therefore the working time is increased, and user is allowed to feel no sense of security, therefore, it is necessary to one kind
Digital gas meter calibrating installation and calibration method.
Invention content
The purpose of the present invention is to provide a kind of digital gas meter calibrating installation and calibration methods, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：A kind of digital gas meter calibrating installation, including work
Platform is both provided with stabilizer blade at left and right sides of the workbench bottom, and the bottom of stabilizer blade adjacent surface described in two groups is provided with supporting plate, institute
It states and is provided with water tank at the top of supporting plate, water pump is provided on the right side of the water tank cavity bottom, is connected on the right side of the water pump
Three water service pipes, the top of the workbench are linearly disposed with four groups of trays from left side to the right side successively, and four groups of trays
Top is disposed with air blower, the first ultrasonic flowmeter, digital gas meter to be examined and determine and the second surpasses respectively from left side to right
The air inlet of acoustic wave flow meter, the air outlet of the air blower and the first ultrasonic flowmeter is fixed by the first connecting tube to be connected
Connect, the gas outlet of first ultrasonic flowmeter is fixedly connected with the second connecting tube, and the other end of the second connecting tube with wait for
The air inlet flexible connection of digital gas meter is examined and determine, the gas outlet of the digital gas meter to be examined and determine is connected with third connection
Pipe, and the other end of third connecting tube is fixedly connected with the air inlet of the second ultrasonic flowmeter, after the bench-top
Side is provided with T-shaped link, and T-shaped link is located at the dead astern of digital gas meter to be examined and determine, the T-shaped link
Universal joint is both provided at the top of the left and right sides, the bottom of the universal joint is provided with nozzle, and the water inlet of nozzle and threeway
One end of water pipe connects, and the water outlet of the nozzle is arranged diagonally downward, and the water outlet of two groups of nozzles is respectively facing calibrating electricity
The junction of sub- gas meter, flow meter and third connecting tube and the second connecting tube offers flowing water mouth, the flowing water mouth on the workbench
Inner cavity activity be plugged with filter device, the bottom of the flowing water mouth is connected with outlet pipe, and the bottom of outlet pipe and water tank top
The opening in portion connects, and the bottom of stabilizer blade is provided with universal wheel.
Preferably, the filter device includes link, and the hanging groove to match with link is provided at the top of the flowing water mouth,
The bottom of the link inner cavity is provided with filter screen, and the top movable of the link inner cavity is provided with handle.
Preferably, the universal joint includes link block, and the bottom of the link block offers link slot, and the inner cavity of link slot is lived
It is dynamic to be provided with connected ball.
Preferably, it is arc-shaped at the top of the workbench vertical section, and circular arc, to lower recess, the flowing water mouth is located at circular arc
Positive bottom, the surrounding of the bench-top are both provided with side plate, and the front and rear sides of left and right sides side plate are respectively with front and back two
The adjacent surface of the side plate of side is tightly connected.
Preferably, the filter screen is cylinder, and the outside diameter of the filter screen is less than the diameter of flowing water mouth.
Preferably, the water tank is transparent cabinet, and graduation mark is provided on water tank.
Preferably, the height of tray described in four groups is linearly successively decreased successively from centre to both sides, and the top of four groups of trays
Positioned at same horizontal line.
Preferably, the nozzle is atomizer.
Preferably, steps are as follows for a kind of calibration method based on digital gas meter calibrating installation：
S1：It checks whether each structure of the device is intact, connects electronics combustion to be examined and determine with third connecting tube by the second connecting tube
The inner cavity of the air inlet of gas meter and gas outlet, water tank fills the liquid that children blow bubbles, and water pump is powered on, by liquid runs down threeway
Water pipe is sprayed from nozzle, and sprays to the junction that the second connecting tube connects digital gas meter to be examined and determine with third connecting tube；
S2：Air blower records the flow of air to the first ultrasonic flowmeter inner cavity air blast, and then air passes through the second connection
Pipe enters the inner cavity of digital gas meter to be examined and determine, the flow of digital gas meter record air to be examined and determine, and air is connected by third
Pipe enters the inner cavity of the second ultrasonic flowmeter, and the second ultrasonic flowmeter records air mass flow；
S3：If the second connecting tube connects the air inlet and gas outlet air blowing bubble of digital gas meter to be examined and determine with third connecting tube,
Then indicate calibrating digital gas meter air inlet connected with gas outlet it is not close, and by the first ultrasonic flowmeter, wait examining and determine
The numerical value recorded on digital gas meter and the second ultrasonic flowmeter judges whether the leakproofness of digital gas meter to be examined and determine is intact；
S4：If the numerical value recorded on the first ultrasonic flowmeter, digital gas meter to be examined and determine and the second ultrasonic flowmeter is identical,
Side digital gas meter to be examined and determine is not revealed, if the numerical value phase recorded on the first ultrasonic flowmeter and the second ultrasonic flowmeter
Together, but different from the numerical value recorded on digital gas meter to be examined and determine, side digital gas meter to be examined and determine is not revealed, but miscount,
If the numerical value recorded on the first ultrasonic flowmeter and the second ultrasonic flowmeter is different, side digital gas meter leakage to be examined and determine.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the apparatus structure is simple, easy to use, digital gas meter to be examined and determine is connected with third connecting tube by the second connecting tube
Air inlet and gas outlet, the liquid that blows bubbles of inner cavity dress children of water tank, water pump is powered on, by three water service pipe of liquid runs down
It is sprayed from nozzle, and sprays to the junction that the second connecting tube connects digital gas meter to be examined and determine with third connecting tube, if second connects
Take over the air inlet and gas outlet air blowing bubble that digital gas meter to be examined and determine is connected with third connecting tube, then it represents that calibrating electronics combustion
The air inlet of gas meter connects not close with gas outlet；
2. and the numerical value by being recorded on the first ultrasonic flowmeter, digital gas meter to be examined and determine and the second ultrasonic flowmeter is sentenced
Whether the leakproofness of disconnected digital gas meter to be examined and determine is intact, if the first ultrasonic flowmeter, digital gas meter to be examined and determine and second
The numerical value recorded on ultrasonic flowmeter is identical, and side digital gas meter to be examined and determine is not revealed, if the first ultrasonic flowmeter and
The numerical value recorded on two ultrasonic flowmeters is identical, but different from the numerical value recorded on digital gas meter to be examined and determine, and side waits examining and determine
Digital gas meter is not revealed, but miscount, if the numerical value recorded on the first ultrasonic flowmeter and the second ultrasonic flowmeter
Difference, side digital gas meter leakage to be examined and determine；
3. the apparatus structure is simple, small, the leakproofness of digital gas meter can be effectively examined and determine, and maintenance personal is facilitated to take
Band examines and determine the leakproofness of digital gas meter in time, investigates gas leakage point.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the portions A of the present invention structural schematic diagram；
Fig. 3 is universal joint schematic diagram of the present invention.
In figure：1 stabilizer blade, 2 supporting plates, 3 workbench, 4 water tanks, 5 water pumps, 6 three water service pipes, 7 air blowers, 8 first supersonic flows
Gauge, 9 digital gas meters to be examined and determine, 10 second ultrasonic flowmeters, 11 trays, 12 T-shaped links, 13 universal joints, 131
Link block, 132 link slots, 133 connected balls, 14 nozzles, 15 flowing water mouths, 16 filter devices, 161 links, 162 filter screens, 163
Hand, 17 outlet pipes, 18 universal wheels.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 shown in-Fig. 3, the present invention provides a kind of technical solution：A kind of digital gas meter calibrating installation, including
Workbench 3 is both provided with stabilizer blade 1 at left and right sides of 3 bottom of workbench, and the bottom of two groups of 1 adjacent surfaces of stabilizer blade is provided with supporting plate 2,
The top of supporting plate 2 is provided with water tank 4, and water pump 5 is provided on the right side of 4 intracavity bottom of water tank, and the right side of water pump 5 is connected with three water flowings
The top of pipe 6, workbench 3 is linearly disposed with four groups of trays 11, and the top of four groups of trays 11 successively from left side to the right side
It is disposed with air blower 7, the first ultrasonic flowmeter 8, digital gas meter to be examined and determine 9 and the second ultrasound respectively from left side to right
The air inlet of wave flowmeter 10, the air outlet of air blower 7 and the first ultrasonic flowmeter 8 is fixedly connected by the first connecting tube,
The gas outlet of first ultrasonic flowmeter 8 is fixedly connected with the second connecting tube, and the other end of the second connecting tube and waits for calibrating electricity
The air inlet of sub- gas meter, flow meter 9 is flexibly connected, and the gas outlet of digital gas meter 9 to be examined and determine is connected with third connecting tube, and the
The other end of three connecting tubes is fixedly connected with the air inlet of the second ultrasonic flowmeter 10, and the rear side at 3 top of workbench is provided with T
Font link 12, and T-shaped link 12 is located at the dead astern of digital gas meter 9 to be examined and determine, T-shaped link 12 or so two
Universal joint 13 is both provided at the top of side, the bottom of universal joint 13 is provided with nozzle 14, and the water inlet of nozzle 14 and three water flowings
One end of pipe 6 connects, and the water outlet of nozzle 14 is arranged diagonally downward, and the water outlet of two groups of nozzles 14 is respectively facing calibrating electronics
The junction of gas meter, flow meter 9 and third connecting tube and the second connecting tube, offers flowing water mouth 15 on workbench 3, flowing water mouth 15 it is interior
Chamber activity is plugged with filter device 16, and the bottom of flowing water mouth 15 is connected with outlet pipe 17, and the bottom of outlet pipe 17 is pushed up with water tank 4
The opening in portion connects, and the bottom of stabilizer blade 1 is provided with universal wheel 18, air blower 7 and water pump 5 and switchs electricity with external power supply by being oriented to
Property connection.
Wherein, filter device 16 includes link 161, and the top of flowing water mouth 15 is provided with the hanging groove to match with link 161,
The bottom of 161 inner cavity of link is provided with filter screen 162, and the top movable of 161 inner cavity of link is provided with handle 163, filter device
16 presence plays the role of that impurities in liquid is recovered by filtration；
Universal joint 13 includes link block 131, and the bottom of link block 131 offers link slot 132, and the inner cavity of link slot 132 is lived
It is dynamic to be provided with connected ball 133, it can be with the direction of 14 water outlet of adjusting shower nozzle with matching for connected ball 133 by link block 131；
It is arc-shaped, and circular arc, to lower recess, flowing water mouth 15 is located at the positive bottom of circular arc, works at the top of 3 vertical section of workbench
The surrounding at 3 top of platform is both provided with side plate, and the front and rear sides of left and right sides side plate are adjacent with the side plate of front and rear sides respectively
Face is tightly connected, and the top of workbench 3 is arc-shaped the collection that liquid is facilitated to lower recess, and the presence of side plate can prevent liquid
Surrounding outflow of the body from 3 top of workbench；
Filter screen 162 is cylinder, and the outside diameter of filter screen 162 is less than the diameter of flowing water mouth 15, makes the side of filter screen 162
It is not contacted with flowing water mouth 15, allows the better circulating liquid in the side of filter screen 162；
Water tank 4 is transparent cabinet, and graduation mark is provided on water tank 4, and the presence of graduation mark facilitates observation 4 inner cavity liquid of water tank
Capacity；
The height of four groups of trays 11 is linearly successively decreased successively from centre to both sides, and the top of four groups of trays 11 is located at same level
Line keeps the device more beautiful, and the presence of tray 11 avoids air blower 7, the first ultrasonic flowmeter 8, electronics to be examined and determine combustion
The bottom of gas meter 9 and the second ultrasonic flowmeter 10 is contacted with liquid；
Nozzle 14 is atomizer, and atomizer makes liquid sprinkling evenly.
Steps are as follows for a kind of calibration method based on digital gas meter calibrating installation：
S1：It checks whether each structure of the device is intact, connects electronics combustion to be examined and determine with third connecting tube by the second connecting tube
The inner cavity of the air inlet of gas meter 9 and gas outlet, water tank 4 fills the liquid that children blow bubbles, and water pump 5 is powered on, by liquid runs down
Three water service pipes 6 are sprayed from nozzle 14, and spray to the connection that the second connecting tube connects digital gas meter 9 to be examined and determine with third connecting tube
Place；
S2：Air blower 7 records the flow of air to the 8 inner cavity air blast of the first ultrasonic flowmeter, and then air connects by second
The inner cavity into digital gas meter 9 to be examined and determine is taken over, digital gas meter 9 to be examined and determine records the flow of air, and air passes through third
Connecting tube enters the inner cavity of the second ultrasonic flowmeter 10, and the second ultrasonic flowmeter 10 records air mass flow；
S3：If the second connecting tube connects the air inlet and gas outlet air blowing bubble of digital gas meter 9 to be examined and determine with third connecting tube,
It is not close then to indicate that the air inlet of calibrating digital gas meter 9 is connected with gas outlet, and passes through the first ultrasonic flowmeter 8, to be checked
The numerical value for determining to record on digital gas meter 9 and the second ultrasonic flowmeter 10 judges that the leakproofness of digital gas meter 9 to be examined and determine is
It is no intact；
S4：If the numerical value recorded on the first ultrasonic flowmeter 8, digital gas meter to be examined and determine 9 and the second ultrasonic flowmeter 10
Identical, side digital gas meter 9 to be examined and determine is not revealed, if being recorded on the first ultrasonic flowmeter 8 and the second ultrasonic flowmeter 10
Numerical value it is identical but different from the numerical value recorded on digital gas meter 9 to be examined and determine, side digital gas meter 9 to be examined and determine is not revealed, but
Miscount, if the numerical value recorded on the first ultrasonic flowmeter 8 and the second ultrasonic flowmeter 10 is different, calibrating electricity is waited in side
Sub- gas meter, flow meter 9 is revealed.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of digital gas meter calibrating installation, including workbench（3）, it is characterised in that：The workbench（3）The left and right of bottom
Both sides are both provided with stabilizer blade（1）, stabilizer blade described in two groups（1）The bottom of adjacent surface is provided with supporting plate（2）, the supporting plate（2）Top
Portion is provided with water tank（4）, the water tank（4）Water pump is provided on the right side of intracavity bottom（5）, the water pump（5）Right side connection
There are three water service pipes（6）, the workbench（3）Top from left side to the right side be linearly disposed with four groups of trays successively（11）,
And four groups of trays（11）Top be disposed with air blower respectively from left side to right（7）, the first ultrasonic flowmeter（8）, wait for
Examine and determine digital gas meter（9）With the second ultrasonic flowmeter（10）, the air blower（7）Air outlet and the first ultrasonic flow
Meter（8）Air inlet be fixedly connected by the first connecting tube, first ultrasonic flowmeter（8）Gas outlet be fixedly connected with
Second connecting tube, and the other end of the second connecting tube and digital gas meter to be examined and determine（9）Air inlet flexible connection, it is described to be checked
Determine digital gas meter（9）Gas outlet be connected with third connecting tube, and the other end of third connecting tube and the second ultrasonic wave
Flowmeter（10）Air inlet be fixedly connected, the workbench（3）T-shaped link is provided on rear side of top（12）, and T words
Shape link（12）Positioned at digital gas meter to be examined and determine（9）Dead astern, the T-shaped link（12）The top of the left and right sides
It is both provided with universal joint（13）, the universal joint（13）Bottom be provided with nozzle（14）, and nozzle（14）Water inlet and three
Water service pipe（6）One end connection, the nozzle（14）Water outlet be arranged diagonally downward, and two groups of nozzles（14）Water outlet point
Not towards calibrating digital gas meter（9）With the junction of third connecting tube and the second connecting tube, the workbench（3）On offer
Flowing water mouth（15）, the flowing water mouth（15）Inner cavity activity be plugged with filter device（16）, the flowing water mouth（15）Bottom connect
It is connected to outlet pipe（17）, and outlet pipe（17）Bottom and water tank（4）The opening at top connects, stabilizer blade（1）Bottom be provided with
Universal wheel（18）.
2. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：The filter device（16）Packet
Include link（161）, the flowing water mouth（15）Top be provided with and link（161）The hanging groove to match, the link（161）It is interior
The bottom of chamber is provided with filter screen（162）, the link（161）The top movable of inner cavity is provided with handle（163）.
3. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：The universal joint（13）Including
Link block（131）, the link block（131）Bottom offer link slot（132）, and link slot（132）Inner cavity activity set
It is equipped with connected ball（133）.
4. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：The workbench（3）It is perpendicular to cut
It is arc-shaped at the top of face, and circular arc is to lower recess, the flowing water mouth（15）Positioned at the positive bottom of circular arc, the workbench（3）
The surrounding at top is both provided with side plate, and the front and rear sides of left and right sides side plate are close with the adjacent surface of the side plate of front and rear sides respectively
Envelope connection.
5. a kind of digital gas meter calibrating installation according to claim 2, it is characterised in that：The filter screen（162）For
Cylinder, the filter screen（162）Outside diameter be less than flowing water mouth（15）Diameter.
6. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：The water tank（4）It is transparent
Babinet, and water tank（4）On be provided with graduation mark.
7. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：Tray described in four groups（11）'s
Height is linearly successively decreased successively from centre to both sides, and four groups of trays（11）Top be located at same horizontal line.
8. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：The nozzle（14）For atomization
Nozzle.
9. a kind of digital gas meter calibrating installation according to claim 1, it is characterised in that：One kind being based on digital gas meter
Steps are as follows for the calibration method of calibrating installation：
S1：It checks whether each structure of the device is intact, connects electronics combustion to be examined and determine with third connecting tube by the second connecting tube
Gas meter（9）Air inlet and gas outlet, water tank（4）The liquid that blows bubbles of inner cavity dress children, water pump（5）It is powered on, by liquid
Body is along three water service pipes（6）From nozzle（14）It sprays, and sprays to the second connecting tube and connect electronics combustion to be examined and determine with third connecting tube
Gas meter（9）Junction；
S2：Air blower（7）To the first ultrasonic flowmeter（8）Inner cavity air blast, and the flow of air is recorded, then air passes through
Two connecting tubes enter digital gas meter to be examined and determine（9）Inner cavity, digital gas meter to be examined and determine（9）Record the flow of air, air
Enter the second ultrasonic flowmeter by third connecting tube（10）Inner cavity, the second ultrasonic flowmeter（10）Record air stream
Amount；
S3：If the second connecting tube connects digital gas meter to be examined and determine with third connecting tube（9）Air inlet and gas outlet blow bubble
Bubble, then it represents that calibrating digital gas meter（9）Air inlet connected with gas outlet not close, and pass through the first ultrasonic flowmeter
（8）, digital gas meter to be examined and determine（9）With the second ultrasonic flowmeter（10）The numerical value of upper record judges digital gas meter to be examined and determine
（9）Leakproofness it is whether intact；
S4：If the first ultrasonic flowmeter（8）, digital gas meter to be examined and determine（9）With the second ultrasonic flowmeter（10）Upper record
Numerical value it is identical, side digital gas meter to be examined and determine（9）It does not reveal, if the first ultrasonic flowmeter（8）And second ultrasonic flow
Meter（10）The numerical value of upper record is identical, but with digital gas meter to be examined and determine（9）The numerical value of upper record is different, side electronics combustion to be examined and determine
Gas meter（9）It does not reveal, but miscount, if the first ultrasonic flowmeter（8）And second ultrasonic flowmeter（10）Upper record
Numerical value is different, side digital gas meter to be examined and determine（9）Leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401863.8A CN108593056B (en) | 2018-04-28 | 2018-04-28 | A kind of digital gas meter calibrating installation and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401863.8A CN108593056B (en) | 2018-04-28 | 2018-04-28 | A kind of digital gas meter calibrating installation and calibration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108593056A true CN108593056A (en) | 2018-09-28 |
| CN108593056B CN108593056B (en) | 2019-11-12 |
Family
ID=63620179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810401863.8A Active CN108593056B (en) | 2018-04-28 | 2018-04-28 | A kind of digital gas meter calibrating installation and calibration method |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823481A (en) * | 2019-12-18 | 2020-02-21 | 江苏擎邦机械有限公司 | Air tightness detection device for rubber tube of air expansion shaft |
| CN111121927A (en) * | 2019-12-16 | 2020-05-08 | 金卡智能集团股份有限公司 | Water inlet detection method of electronic gas meter |
| CN111982246A (en) * | 2020-07-30 | 2020-11-24 | 济宁市计量测试所 | Small gas flowmeter verification and calibration device |
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| CN205262555U (en) * | 2015-12-28 | 2016-05-25 | 新奥科技发展有限公司 | Gas flow detection device |
| CN208187508U (en) * | 2018-04-28 | 2018-12-04 | 金卡智能集团股份有限公司 | A kind of digital gas meter calibrating installation |
| US10301167B2 (en) * | 2016-08-03 | 2019-05-28 | Paul Johnson | Apparatus and method for automatically updating the relationship between measured storage tank depth and storage tank volume, and monitoring the accuracy of a dispenser flow meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203908745U (en) * | 2014-06-12 | 2014-10-29 | 渤海船舶重工有限责任公司 | Ship host machine oil return tube leak hunting device |
| CN205262555U (en) * | 2015-12-28 | 2016-05-25 | 新奥科技发展有限公司 | Gas flow detection device |
| US10301167B2 (en) * | 2016-08-03 | 2019-05-28 | Paul Johnson | Apparatus and method for automatically updating the relationship between measured storage tank depth and storage tank volume, and monitoring the accuracy of a dispenser flow meter |
| CN208187508U (en) * | 2018-04-28 | 2018-12-04 | 金卡智能集团股份有限公司 | A kind of digital gas meter calibrating installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121927A (en) * | 2019-12-16 | 2020-05-08 | 金卡智能集团股份有限公司 | Water inlet detection method of electronic gas meter |
| CN110823481A (en) * | 2019-12-18 | 2020-02-21 | 江苏擎邦机械有限公司 | Air tightness detection device for rubber tube of air expansion shaft |
| CN111982246A (en) * | 2020-07-30 | 2020-11-24 | 济宁市计量测试所 | Small gas flowmeter verification and calibration device |
| CN111982246B (en) * | 2020-07-30 | 2023-01-10 | 济宁市计量测试所 | Small gas flowmeter verification and calibration device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108593056B (en) | 2019-11-12 |
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