CN108195446A - A kind of vehicle-mounted double water tank formula oil field water meter field calibration device and calibration method - Google Patents
A kind of vehicle-mounted double water tank formula oil field water meter field calibration device and calibration method Download PDFInfo
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- CN108195446A CN108195446A CN201810132509.XA CN201810132509A CN108195446A CN 108195446 A CN108195446 A CN 108195446A CN 201810132509 A CN201810132509 A CN 201810132509A CN 108195446 A CN108195446 A CN 108195446A
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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
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Abstract
The invention discloses a kind of vehicle-mounted double water tank formula oil field water meter field calibration devices and calibration method, calibrating installation to include：Standard water tank, handle, water tank, test pipeline, electronic scale, picking-up vehicle, shell, barretter and standard scale etc., the left and right sides of the standard water tank are equipped with reinforcing rib, handle is installed on the reinforcing rib, the water tank is fitted with electronic scale, external hose, barretter, standard scale, rear straight pipe, regulating valve, main valve, triple valve, hose and the preceding straight pipe pressure resistance 25MPa, the barretter are honeycomb orifice type.In a manner that method of standard table is combined with weight method, using method of standard table checklist is compared measurement in calibration method, using weight method to carrying out periodic calibration under the conditions of standard scale at the scene high pressure muddy water.The present invention solves the problems, such as that standard scale can not be carried out at the scene periodic calibration and tested oil field water meter can not accurately detected under site environment.
Description
Technical field
The present invention relates to oil field water meter detection field, more particularly to a kind of vehicle-mounted double water tank formula oil field water meter field calibration dress
It puts and calibration method.
Background technology
Water meter is measuring instrument important in DP technology, and at the scene such as water injection well in oil fields, pump house, dosage is big, it is wide to be distributed.
At present, there is dismounting trouble because being sent to laboratory inspection, need that backing sheet replacement is taken otherwise to influence the problems such as oil field normally produces,
Perfect not enough to the calibration of oil field water meter, many water meters are in the long-term state do not examined.
Although the water flow calibrating installation in current laboratory, technology maturation, its is bulky, and since Oil Field is handed over
Gating condition is severe, can not also reach Oil Field to being calibrated by water gauge.There are indivedual enterprise developments can be at the scene at present
To the device that water meter measures, but the standard scale on its device is still needed to be sent to metrological services at different levels and be calibrated, due to metering
The conditions such as water quality and pressure when being calibrated in department laboratory to standard scale can not simulate live high pressure, the condition of muddy water, number
According to accuracy, there are problems, can not realize and effectively trace to the source.It is therefore desirable to develop, a kind of measurement result is reliable, meets user demand
Oil field water meter field calibration device.
Invention content
In order to achieve the above object, the present invention provides a kind of vehicle-mounted double water tank formula oil field water meter field calibration device and schools
Quasi- method, periodic calibration can not be carried out at the scene to standard scale by solving, and can not carry out site environment to tested oil field water meter
The problem of lower accurate detection.
The technical solution adopted by the present invention is：
A kind of vehicle-mounted skid-mounted oilfield water meter field calibration device of double water tank formula, including：Liquid level tube, standard water tank are strengthened
Muscle, handle, standard water tank drainpipe, stainless steel lock seat, stainless steel lock, water tank, test pipeline, water tank drainpipe,
Standard water tank water inlet pipe, partition board, concave plate, accumulator, instrument panel, electronic scale, hanging ring, peep hole, standard water tank inlet valve,
Back door, standard water tank go out water valve, and water tank goes out water valve, picking-up vehicle, front door, shell, external hose, barretter, retainer ring, standard
Table, rear straight pipe, regulating valve, main valve, triple valve, hose, pipeline is fixed and preceding straight pipe, and the liquid level tube is mounted on standard
The upper surface of water tank, the left and right sides of the standard water tank are equipped with reinforcing rib, handle are equipped on the reinforcing rib,
Standard water tank drainpipe is installed, the handle both sides are equipped with stainless steel lock seat, described behind the standard water tank
Stainless steel lock seat and stainless steel lock match clamping standard water tank, the stainless steel is latched and is fixed on water tank,
The water tank is fitted with electronic scale, and the standard water tank is equipped with above electronic scale behind the water tank
Water tank drainpipe is equipped with standard water tank water inlet pipe, the standard water tank water inlet pipe and test before the standard water tank
Pipeline is connected, and the test pipeline is fixed on by pipeline on partition board, and concave plate is equipped with below the test pipeline,
The concave plate is equipped with accumulator on the shell by fixed below the concave plate, the partition board upper left side is pacified
Equipped with instrument panel, the upper surface of outer cover four corners are equipped with hanging ring, and the upper surface of outer cover is provided with peep hole, described
Shell behind equipped with back door, go out water valve equipped with standard water tank on the back door and water tank go out water valve, the standard water
Case goes out water valve and water tank goes out water valve and connect respectively with standard water tank drainpipe and water tank drainpipe, and the shell passes through solid
Determine ring to be fixed on picking-up vehicle, pass through hose and threeway equipped with front door, the standard water tank inlet valve before the shell
Valve connects, and triple valve one end is connect by pipeline with water tank, and triple valve one end is connect by pipeline with main valve, and main valve passes through pipe
Road is connect with regulating valve, and the regulating valve is connect by rear straight pipe with standard scale, standard scale left side and preceding straight tube
Section be connected, the preceding straight pipe is connected by barretter with external hose, the main valve, regulating valve, rear straight pipe,
Standard scale and preceding straight pipe form the test pipeline.
As a kind of preferred technical solution of the design, the external hose, barretter, standard scale, rear straight pipe,
Regulating valve, main valve, triple valve, hose and preceding straight pipe are resistance to MPa25 high pressures.
As a kind of preferred technical solution of the design, the barretter is honeycomb orifice type, the standard scale
Water inlet water outlet need the unstability that preceding straight pipe and rear straight pipe reduce flow, the barretter can be used as preceding straight tube
Section uses, and right side is connected by DN25 flanged joints with preceding straight pipe to be used cooperatively.
As a kind of preferred technical solution of the design, the present apparatus uses the detection of two water tank of standard water tank and water tank
Mode, water tank are when being detected using method of standard table to checklist, for storing the high pressure muddy water of discharge, standard water tank
It is when using weight method periodic calibration standard scale, can be lifted using handle, then coordinates electronic scale turbid to the high pressure at scene
Water is into the calibration of line density, and the standard water tank upper surface is ramped shaped, convenient for the bubble generated during access muddy water in babinet
Discharge.
A kind of vehicle-mounted double water tank formula oil field water meter field calibration method, using above device, the present apparatus using weight method with
The mode that method of standard table is combined measures checklist and standard scale in Oil Field, calibrates.Using method of standard table in oil
When field scene measures standard scale：Checklist is connected by external hose with test pipeline, and high pressure muddy water flows through standard
After table, water tank is finally flowed by the road, by the cumulative flow magnitude Q of standard scale at this time2With checklist cumulative flow magnitude Q2Compared
It is right, carry out the calibration to checklist；When being calibrated using weight method to standard scale：It first has to the close of the high pressure muddy water at scene
Degree is measured, and after electronic scale is packed under standard water tank, reads electronic scale initial value m0, high pressure muddy water pipeline stream after tested
Enter standard water tank, adjusting regulating valve makes standard scale reach common flow, when the liquid level of standard water tank reaches liquid level tube scale, closes
The injection of high pressure muddy water is closed, liquid level tube has a volume reading V at this timed, electronic scale has a quality readings md, and then can calculate
The density p of the high pressure muddy water at scene, empties standard water tank, repeats the above process again, the integrated flow for reading standard scale is initial
Value VB0, measure the indicating value m of electronic scale in the 1min times1With the integrated flow volume final value V of standard scaleB1, pass through (m1-m0)/ρ
Normal volume V can be obtained2, by (VB1-VB0) and V2It is compared, realizes the calibration to standard scale.And the electronic scale that the present apparatus uses
It all traces to the source to the standard set-up of metrological service with standard water tank, so as to all trace to the source the result of checklist, standard scale to country
Benchmark ensures the reliability of result.
The beneficial effects are mainly as follows：
1. the present apparatus can be used the vehicle-mounted whole Transporting of pick up and be tested to scene, compared to what is used in current laboratory
For device, practicability is more extensive, and the whole pipeline of the present apparatus is designed for high pressure resistant 25MPa, complies fully with Oil Field survey
The pressure requirements needed for pipeline are put in trial assembly.
2. due to existing vehicle-mounted water meter field calibration device, standard scale is calibrated in laboratory environments, with
The muddy water water quality and high pressure condition at scene are inconsistent, and there are problem, the present apparatus directly to be taken using weight method for data accuracy
The high pressure muddy water at scene determines water density ρ values, and precision is high, and returning laboratory without manual sampling carries out survey to density
Examination, time saving and energy saving, after solving under the conditions of the room temperature clear water of laboratory to standard scale data calibration, standard scale is used for live high pressure
The problem of result caused by being measured under muddy water environment is inaccurate.
3. the present apparatus is at work, measurement under high pressure muddy water environment is compared to checklist using standard scale, is worked
It is efficient, while periodic calibration is carried out to standard scale using weight method under the conditions of live high pressure muddy water, it ensure that standard scale data
Accurately and reliably.
Description of the drawings
Fig. 1 is the strabismus internal structure chart of the present invention；
Fig. 2 is the side view appearance assumption diagram of the present invention；
Fig. 3 be the present invention face appearance assumption diagram；
Fig. 4 is the checklist overhaul flow chart of the present invention；
Fig. 5 is the standard scale calibration flow chart of the present invention.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
In order to which technological means, creation characteristic, the purpose reached and effect for making the present invention are easy to understand, with reference to
It is specifically illustrating, the present invention is further explained.It should be noted that in the absence of conflict, embodiment and reality in the application
Applying the feature in example can be combined with each other.
As shown in Figure 1 to Figure 3, a kind of vehicle-mounted double water tank formula oil field water meter field calibration device, including：Liquid level tube 1, standard
Water tank 2, reinforcing rib 3, handle 4, standard water tank drainpipe 5, stainless steel lock seat 6, stainless steel lock 7, water tank 8, testing tube
Road 9, water tank drainpipe 10, standard water tank water inlet pipe 11, partition board 12, concave plate 13, accumulator 14, instrument panel 15, electronics
Scale 16, hanging ring 17, peep hole 18, standard water tank inlet valve 19, back door 20, standard water tank go out water valve 21, and water tank goes out water valve 22,
Picking-up vehicle 23, front door 24, shell 25, external hose 26, barretter 27, retainer ring 28, standard scale 29, rear straight pipe 30 are adjusted
Valve 31, main valve 32, triple valve 33, hose 34, pipeline fix 35 and preceding straight pipe 36, and the liquid level tube 1 is mounted on standard water
The upper surface of case 2, the left and right sides of the standard water tank 2 are equipped with reinforcing rib 3, handle are equipped on the reinforcing rib 3
Hand 4, the standard water tank 2 are equipped with standard water tank drainpipe 5 below, and 4 both sides of handle are equipped with stainless steel lock
Seat 6, the stainless steel latch seat 6 and clamping standard water tank 2 are matched with stainless steel lock 7, and stainless steel lock 7 is fixed
On water tank 8, the water tank 8 is fitted with electronic scale 16, and the standard water tank 2 is above electronic scale 16, institute
The water tank 8 stated is below equipped with water tank drainpipe 10, and 2 front of standard water tank is equipped with standard water tank water inlet pipe 11, institute
The standard water tank water inlet pipe 11 stated is connected with test pipeline 9, and the test pipeline 9 fixes 35 by pipeline and is fixed on partition board
On 12,9 lower section of test pipeline is equipped with concave plate 13, and the concave plate 13 is bolted on shell 25,
13 lower section of concave plate is equipped with accumulator 14, and 12 upper left side of partition board is equipped with instrument panel 15, and described is outer
25 upper surface four corners of shell are equipped with hanging ring 17, and 25 upper surface of shell is provided with peep hole 18, behind the shell 25
Equipped with back door 20, go out water valve 21 equipped with standard water tank on the back door 20 and water tank goes out water valve 22, the standard water tank
Go out water valve 21 and water tank goes out water valve 22 and connect respectively with standard water tank drainpipe 5 and water tank drainpipe 10, the shell
25 are fixed on by retainer ring 28 on picking-up vehicle 23, and 25 front of shell is equipped with front door 24, standard water tank water inlet
Valve 19 is connect by hose 34 with triple valve 33, and 33 one end of triple valve is connect by pipeline with water tank 8, and 33 one end of triple valve leads to
It crosses pipeline to connect with main valve 32, main valve 32 is connect by pipeline with regulating valve 31, and the regulating valve 31 passes through rear straight pipe 30
It is connect with standard scale 29,29 left side of standard scale is connected with preceding straight pipe 36, and the preceding straight pipe 36 passes through current stabilization
Pipe 27 is connected with external hose 26, and the connection is DN25 flanged joints.
As a kind of preferred technical solution of the design, the external hose 26, barretter 27, standard scale 29, after
Straight pipe 30, regulating valve 31, main valve 32, triple valve 33, hose 34 and preceding straight pipe 36 are resistance to 25MPa high pressures.
As a kind of preferred technical solution of the design, the barretter 27 is honeycomb orifice type, the standard
The water inlet water outlet of table 29 needs preceding straight pipe 36 and rear straight pipe 30 reduces the unstability of flow, and the barretter 27 can
It is used as preceding straight pipe 36, right side is connected by DN25 flanged joints with preceding straight pipe 36 to be used cooperatively.
As a kind of preferred technical solution of the design, the present apparatus uses the inspection of 8 liang of water tanks of standard water tank 2 and water tank
Survey mode, water tank 8 are used, standard water tank 2 is being used when method of standard table is detected checklist as storage high pressure muddy water
It can be lifted during weight method using handle 4, then coordinate calibration of the electronic scale 16 to live high pressure muddy water into line density, it is described
2 upper surface of standard water tank for ramped shaped, the bubble discharge that is generated convenient for the liquid in babinet.
A kind of vehicle-mounted double water tank formula oil field water meter field calibration method, using such as above device, using weight method and standard
The mode that table method is combined calibrates standard scale in Oil Field.
If Fig. 4 is using the overhaul flow chart that checklist is calibrated during standard law, oil is carried out to checklist using method of standard table
During the in-site measurement of field：Checklist is connected by external hose 26 with test pipeline 9, after high pressure muddy water flows through standard scale 29, most
Water tank 8 is flowed by pipeline, by the cumulative flow magnitude Q of standard scale 29 at this time2With checklist cumulative flow magnitude Q1It is compared,
Carry out the calibration to checklist.
The overhaul flow chart using weight method calibration standard scale is illustrated in figure 5, standard scale 29 is carried out using weight method
During calibration：It first has to be measured the density of the high pressure muddy water at scene, after electronic scale 16 is packed under standard water tank 2, read
Take 16 initial value m of electronic scale0, pipeline 9 flows into standard water tank 2 to high pressure muddy water after tested, and adjusting regulating valve 31 reaches standard scale 29
To common flow, when the liquid level of standard water tank 2 reaches 1 scale of liquid level tube, the injection of high pressure muddy water is closed, at this time liquid level tube 1
Have a volume reading Vd, electronic scale 16 has a quality readings md, and then the density p of the high pressure muddy water at scene can be calculated, it empties
Standard water tank 2, repeats the above process again, reads the integrated flow initial value V of standard scale 29B0, measure electric in the 1min times
The indicating value m of sub- scale 161With the integrated flow volume final value V of standard scale 29B1, pass through (m1-m0)/ρ can obtain normal volume V2, will
(VB1-VB0) and V2It is compared, realizes the calibration to standard scale 29.And the electronic scale 16 and standard water tank 2 that the present apparatus uses are all
It traces to the source to the standard set-up of metrological service, so as to all trace to the source the result of checklist, standard scale 29 to National primary standard, ensures knot
The reliability of fruit.
According to the principle of weight method, the distribution of uncertainty between 2 volume of standard water tank and electronic scale 16,
Using partial derivative method, m and ρ partial uncertainty indexs are obtained, to meet the uncertainty index of V.
According to analyze come ρ uncertainty, then according to scene muddy water density p be to be determined according to above-mentioned method
, i.e. ρ=md/Vd, a partial derivative method is recycled, seeks md、VdUncertainty.Formula arrangement can be obtainedPoint
M, m are not obtainedd, VdInfluence of the three to whole uncertainty, by xiIt is caused to be measuredyStandard uncertainty component be
Combined standard uncertainty calculation formula is represented by
It can obtain the relations of distribution of uncertainty between 2 volume of standard water tank and electronic scale 16 respectively by above-mentioned calculating.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the description in above embodiments and description only illustrates the original of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (5)
1. a kind of vehicle-mounted double water tank formula oil field water meter field calibration device, including：Liquid level tube（1）, standard water tank（2）, reinforcing rib
（3）, handle（4）, standard water tank drainpipe（5）, stainless steel lock seat（6）, stainless steel lock（7）, water tank（8）, testing tube
Road（9）, water tank drainpipe（10）, standard water tank water inlet pipe（11）, partition board（12）, concave plate（13）, accumulator（14）, instrument
Panel（15）, electronic scale（16）, hanging ring（17）, peep hole（18）, standard water tank inlet valve（19）, back door（20）, standard water tank
Go out water valve（21）, water tank goes out water valve（22）, picking-up vehicle（23）, front door（24）, shell（25）, external hose（26）, barretter
（27）, retainer ring（28）, standard scale（29）, rear straight pipe（30）, regulating valve（31）, main valve（32）, triple valve（33）, hose
（34）, pipeline fixes（35）With preceding straight pipe（36）, it is characterised in that：The liquid level tube（1）Mounted on standard water tank（2）'s
Upper surface, the standard water tank（2）Left and right sides reinforcing rib is installed（3）, the reinforcing rib（3）On handle is installed
Hand（4）, the standard water tank（2）Standard water tank drainpipe is installed below（5）, the handle（4）Both sides are equipped with not
Become rusty steel lock seat（6）, described stainless steel lock seat（6）It is latched with stainless steel（7）Match clamping standard water tank（2）, it is described
Stainless steel lock（7）It is fixed on water tank（8）On, the water tank（8）It is fitted with electronic scale（16）, the standard
Water tank（2）Mounted in electronic scale（16）Above, the water tank（8）Water tank drainpipe is housed below（10）, the standard
Water tank（2）Front is equipped with standard water tank water inlet pipe（11）, the standard water tank water inlet pipe（11）With test pipeline（9）It is connected
It connects, the test pipeline（9）It is fixed by pipeline（35）It is fixed on partition board（12）On, the test pipeline（9）Pacify lower section
Equipped with concave plate（13）, the concave plate（13）By being fixed on shell（25）On, the concave plate（13）It installs lower section
There is accumulator（14）, the partition board（12）Upper left side is equipped with instrument panel（15）, the shell（25）Upper surface quadrangle
Place is equipped with hanging ring（17）, the shell（25）Upper surface is provided with peep hole（18）, the shell（25）After being equipped with below
Door（20）, the back door（20）It is upper to go out water valve equipped with standard water tank（21）Go out water valve with water tank（22）, the standard water
Case goes out water valve（21）Go out water valve with water tank（22）Respectively with standard water tank drainpipe（5）With water tank drainpipe（10）Connection,
The shell（25）Pass through retainer ring（28）It is fixed on picking-up vehicle（23）On, the shell（25）Front is equipped with front door
（24）, the standard water tank inlet valve（19）Pass through hose（34）With triple valve（33）Connection, triple valve（33）One end passes through
Pipeline and water tank（8）Connection, triple valve（33）The other end passes through pipeline and main valve（32）Connection, main valve（32）By pipeline with
Regulating valve（31）Connection, the regulating valve（31）Pass through rear straight pipe（30）With standard scale（29）Right side connects, the mark
Quasi- table（29）Left side and preceding straight pipe（36）It is connected, the preceding straight pipe（36）Pass through barretter（27）With external hose
（26）It is connected, the main valve（32）, regulating valve（31）, rear straight pipe（30）, standard scale（29）With preceding straight pipe（36）Structure
Into the test pipeline（9）.
2. a kind of vehicle-mounted double water tank formula oil field water meter field calibration device according to claim 1, it is characterised in that：It is described
External hose（26）, barretter（27）, standard scale（29）, rear straight pipe（30）, regulating valve（31）, main valve（32）, triple valve
（33）, hose（34）With preceding straight pipe（36）It is resistance to 25MPaHigh pressure.
3. a kind of vehicle-mounted double water tank formula oil field water meter field calibration device according to claim 1, it is characterised in that：It is described
Barretter（27）For honeycomb orifice type, the standard scale（29）Water inlet water outlet need preceding straight pipe（36）With rear straight tube
Section（30）Reduce the unstability of flow, the barretter（27）Preceding straight pipe can be used as（36）It uses, DN25 methods can be passed through
Orchid connection and preceding straight pipe（36）It is connected and is used cooperatively.
4. a kind of vehicle-mounted double water tank formula oil field water meter field calibration device according to claim 1, it is characterised in that：Using
Standard water tank（2）And water tank（8）The detection mode of two water tanks, water tank（8）It is that checklist is being carried out using method of standard table
During detection, for storing the muddy water emitted after tested, standard water tank（2）Handle is used when using weight method（4）
It is lifted, then coordinates electronic scale（16）To live high pressure muddy water into the calibration of line density, and in Oil Field height
Periodic calibration under pressure, muddy water environment to standard scale, the standard water tank（2）Upper surface is ramped shaped, convenient for being noted in babinet
Enter the bubble discharge generated during muddy water.
5. a kind of vehicle-mounted double water tank formula oil field water meter field calibration method, using device as described in claim 1, feature exists
In：Checklist and standard scale are measured in Oil Field, calibrated in a manner that method of standard table is combined using weight method；
Using method of standard table when Oil Field measures checklist：Checklist passes through external hose（26）With testing pipeline
（9）It is connected, high pressure muddy water flows through standard scale（29）Afterwards, water tank is finally flowed by the road（8）, will standard scale at this time（29）'s
Cumulative flow magnitudeQ 2 With checklist cumulative flow magnitudeQ 2 It is compared, carries out the calibration to checklist；
When being calibrated using weight method to standard scale 29：It first has to be measured the density of the high pressure muddy water at scene, it will be electric
Sub- scale（16）It is packed into standard water tank（2）After beneath, electronic scale is read（16）Initial valuem 0 , high pressure muddy water pipeline after tested（9）Stream
Enter standard water tank（2）, adjust regulating valve（31）Make standard scale（29）Reach common flow, work as standard water tank（2）Liquid level reach
Liquid level tube（1）During scale, the injection of high pressure muddy water is closed, at this time liquid level tube（1）Have a volume readingV d , electronic scale（16）Have
One quality readingsm d , and then the density of the high pressure muddy water at scene can be calculatedρ, empty standard water tank（2）, above-mentioned mistake is repeated again
Journey reads standard scale（29）Integrated flow initial valueV B0 , measure electronic scale in the 1min times（16）Indicating valuem 1And standard
Table（29）Integrated flow volume final valueV B1, pass through（m 1-m0）/ρNormal volume can be obtainedV 2, will（V B1-V B0 ）WithV 2It is compared,
It realizes to standard scale（29）Calibration；The electronic scale（16）And standard water tank（2）It all traces to the source to the standard dress of metrological service
It puts, thus by checklist, standard scale（29）Result all trace to the source to National primary standard, ensure the reliability of result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810132509.XA CN108195446B (en) | 2018-02-09 | 2018-02-09 | A kind of vehicle-mounted double water tank formula oil field water meter field calibration device and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810132509.XA CN108195446B (en) | 2018-02-09 | 2018-02-09 | A kind of vehicle-mounted double water tank formula oil field water meter field calibration device and calibration method |
Publications (2)
| Publication Number | Publication Date |
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| CN108195446A true CN108195446A (en) | 2018-06-22 |
| CN108195446B CN108195446B (en) | 2019-09-06 |
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| CN201810132509.XA Expired - Fee Related CN108195446B (en) | 2018-02-09 | 2018-02-09 | A kind of vehicle-mounted double water tank formula oil field water meter field calibration device and calibration method |
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| US20180010951A1 (en) * | 2013-04-15 | 2018-01-11 | OW Investors, LLC. (dba MARS Company) | Meter stablizer |
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2018
- 2018-02-09 CN CN201810132509.XA patent/CN108195446B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| KR20100090373A (en) * | 2009-02-06 | 2010-08-16 | 임재영 | Movable apparatus for testing a tap water meter |
| CN202092741U (en) * | 2011-06-18 | 2011-12-28 | 新乡航空工业(集团)有限公司 | Vehicle-mounted liquid flow standard device |
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| US20180010951A1 (en) * | 2013-04-15 | 2018-01-11 | OW Investors, LLC. (dba MARS Company) | Meter stablizer |
| CN204666231U (en) * | 2015-05-12 | 2015-09-23 | 上海恩德斯豪斯自动化设备有限公司 | For support body and the water system of flowmeter calibrating installation |
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| Publication number | Publication date |
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| CN108195446B (en) | 2019-09-06 |
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