CN107727203A - A kind of delicate flow instrument calibration device - Google Patents
A kind of delicate flow instrument calibration device Download PDFInfo
- Publication number
- CN107727203A CN107727203A CN201610655194.8A CN201610655194A CN107727203A CN 107727203 A CN107727203 A CN 107727203A CN 201610655194 A CN201610655194 A CN 201610655194A CN 107727203 A CN107727203 A CN 107727203A
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- China
- Prior art keywords
- tank
- water
- valve
- head
- passage
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Classifications
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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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
A kind of accurate run-off instrument calibration device, it includes：It is connected to the head-tank of water compensating valve；Connect the flow control valve of head-tank；Flow control valve connects calibrating passage, and calibrating passage is into U-shaped, and U-shaped section is equipped with and changes pipe joint, and accredited flowmeter is by changing pipe joint access calibrating passage；Examine and determine another termination magnetic valve of passage；Magnetic valve is connect with being connected to the cistern tube of liquid-level switch, and water tank is placed on electronic platform scale, and water tank is equipped with draining valve and receives collecting tank through draining valve；Liquid bath is collected to be connected to water-circulating pump and connect head-tank with pipeline by water-circulating pump.The present invention solves the accurate and convenient problem examined and determine flow instrument and calibrated, suitable for small-bore flow meter checking.
Description
Technical field
The present invention relates to the calibrating or verification of the instrumentation to measuring fluid flow, more particularly to a kind of delicate flow instrument
Table calibrating installation.
Background technology
Liquid meter is the important process in chemical industry production procedure and sales section, and flow instrument metering is inaccurate
When, it is heavy then may cause production process control failure, gently then cause production cost occur dispute and product quality can not meet visitor
Family is required, it is therefore desirable to often flow instrument is examined and determine and calibrated, enterprise, which does not require nothing more than, ensures the accurate of metering, also requires
Measuring instrument equipment is examined and determine convenient.Level meter gauge is the measurement instrument for being included in national compulsory calibrating catalogue.In order to solve
Flow meter checking and calibration problem, people have made many research, such as Chinese patent ZL200820105367.X " vehiculars
Small flow meter calibrating apparatus ", Chinese patent ZL200920052606.4 " a kind of device for calibrating liquid flowmeters " etc. all respectively has
Its advantage, but some deficiencies yet be present.
The content of the invention
The defects of the invention aims to overcome prior art, there is provided simple in construction, practical, effective a kind of accurate
Run-off instrument calibration device, it is accurate and convenient that flow instrument is examined and determine and calibrated with guarantee.
To achieve these goals, technical scheme is as follows：
A kind of delicate flow instrument calibration device, it includes：It is connected to the head-tank of water compensating valve；Connect the flow of head-tank
Control valve；Flow control valve connects calibrating passage, and calibrating passage is into U types, and U type sections, which are equipped with, changes pipe joint, and accredited flowmeter leads to
Cross and change pipe joint access calibrating passage；Examine and determine another termination magnetic valve of passage；Magnetic valve and the cistern tube for being connected to liquid-level switch
Connect, water tank is placed on electronic platform scale；Water tank is equipped with draining valve and receives collecting tank through draining valve；Collect liquid bath and be connected to water circulation
Pump simultaneously connects head-tank by water-circulating pump with pipeline.Flow control valve is for ensuring the continuity of fluid, stability, making
The measurement process of flow instrument is in stable without fluctuation status；Passage is examined and determine into U types, U types are curved to be ensure that in calibrating passage
Liquid keep full pipe condition, zero point correction and demarcation can also be carried out to accredited flow instrument in the static case；Quilt
Straight length should reach the requirement of 5D after preceding 10D before and after calibrating flow instrument, meet the straight tube segment standard of accredited flow instrument
；It is in order to realize the calibrating of different small-bore flow instruments, if the bore of accredited flow instrument is 1 inch to change pipe joint
During caliber, straight coupling is just selected；When the bore of accredited flow instrument is less than 1 inch pipe, then selection and tested constant current
The reducer union that amount instrument matches, so as to realize the calibrating of different small-bore flow instruments；Magnetic valve and liquid-level switch be for
Ensure will not to overflow in the water during calibrating in water tank.The precision of electronic platform scale should fully meet the essence of flowmeter
Degree requires.
The present invention solves the accurate and convenient problem examined and determine flow instrument and calibrated.
A kind of mouth path flow instrument precise test device provided by the invention, proved by actually using, reached pre-
Purpose is determined, suitable for small-bore flow meter checking.
Brief description of the drawings
Accompanying drawing is structural representation of the invention.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings：
Embodiment
Accompanying drawing illustrates the structure of the present invention, and a kind of accurate run-off instrument calibration device, it includes：
It is connected to the head-tank 2 of water compensating valve 1；Connect the flow control valve 3 of head-tank 2；It is logical that flow control valve 3 connects calibrating
Road 4, calibrating passage 4 is into U-shaped, and U-shaped section is equipped with and changes pipe joint 5, and tested constant flow 6 is by changing the access calibrating passage of pipe joint 5
4 ；Examine and determine another termination magnetic valve 7 of passage 4；Magnetic valve 7 is connect with being connected to the pipe of water tank 9 of liquid-level switch 8, and water tank 9 is put
On electronic platform scale 10, water tank 9 puts draining valve 11 and receives collecting tank 12 through draining valve 11；The water receiving of liquid bath 12 is collected to follow
Ring pump 13 simultaneously connects head-tank 2 with pipeline by water-circulating pump 13.First by tested constant flow when flow instrument is examined and determine
Meter 6 is installed on calibrating passage 4, carries out the weighing of tare weight to the water tank 9 being placed on electronic platform scale 10 first, and carries out
Reset this work：Flow control valve 3 and magnetic valve 7 are opened, when the inlet tube of water tank 9 has fluid outflow, is closed
Magnetic valve 7, open draining valve 11 and draining valve is closed into the emptying rate of liquid in water tank 9, the water inlet pipe no liquid outflow of confirmation water tank 9
11 ；Observation flow instrument whether there is instruction, because it should be no flow of fluid now to examine and determine in passage 4, and examines and determine passage 4
Inside remain the state that fluid is full of；If at this moment there is flow instruction, with regard to carrying out flow instrument zero point correction, it is ensured that the standard of zero point
True property, and work is zeroed out to electronic platform scale 10, it is ensured that electronic platform scale 10 is designated as zero；Again by accredited flowmeter
6 accumulated value is removed, it is ensured that accumulated value zero.Press and open water inlet button, opening flow control valve 3 and magnetic valve 7, in water tank 9
Start to intake, accredited flowmeter 6 proceeds by the accumulation work of flow measurement process.Electronic platform scale 10 proceeds by the matter of water
Amount weighs；Untill the liquid level for continueing to liquid in water tank 9 is reached the position of liquid-level switch 8 by this process, now control loop
Will Self-shut electromagnetic valve 7, block the water inlet of water tank 9.The data that electronic platform scale 10 weighs are read, the reading is this
The a cycle cumulant that accredited flowmeter 6 is examined and determine.By the accumulation data and electronic platform scale 10 that are accredited flowmeter 6
Weighing data calculates the error that this verification process is accredited flowmeter 6.
Claims (2)
1. a kind of accurate run-off instrument calibration device, including：Water compensating valve (1), head-tank (2), flow control valve
(3), examine and determine passage (4), change pipe joint (5), accredited flowmeter (6), magnetic valve (7), liquid-level switch (8), water tank
(9), electronic platform scale (10), draining valve (11), collection liquid bath (12), water-circulating pump (13), it is characterised in that：The high position
Pond (2) is connected to water compensating valve (1), and the water tank (9) is placed on electronic platform scale (10)；Case described in water (9) puts draining
Valve (11) simultaneously receives collecting tank (12) through draining valve (11)；Collection liquid bath (12) the water receiving circulating pump (13) is simultaneously
Head-tank (2) is connected with pipeline by water-circulating pump (13).
2. the accurate run-off instrument calibration device according to claim 1, it is characterised in that：The head-tank (2)
Provided with flow control valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610655194.8A CN107727203A (en) | 2016-08-11 | 2016-08-11 | A kind of delicate flow instrument calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610655194.8A CN107727203A (en) | 2016-08-11 | 2016-08-11 | A kind of delicate flow instrument calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107727203A true CN107727203A (en) | 2018-02-23 |
Family
ID=61199561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610655194.8A Pending CN107727203A (en) | 2016-08-11 | 2016-08-11 | A kind of delicate flow instrument calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107727203A (en) |
-
2016
- 2016-08-11 CN CN201610655194.8A patent/CN107727203A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |