CN207351522U - Piston type gas flow caliberating device - Google Patents
Piston type gas flow caliberating device Download PDFInfo
- Publication number
- CN207351522U CN207351522U CN201720571020.3U CN201720571020U CN207351522U CN 207351522 U CN207351522 U CN 207351522U CN 201720571020 U CN201720571020 U CN 201720571020U CN 207351522 U CN207351522 U CN 207351522U
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- gas flow
- piston
- caliberating device
- range
- glass pipe
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Abstract
The piston type gas flow caliberating device of the utility model, meters under test one end is connected by gas path pipe with air source inlet, the other end is connected by gas path pipe with source outlet, gas flow caliberating device is connected between meters under test and source outlet, gas flow caliberating device includes the ball valve, glass pipe type piston calibration cylinder, high-precision mass flow controller being connected in series；Minute gas flow measurement can be applied to by the different trips gas flow caliberating device of two tunnels parallel connection, cylinder is demarcated by glass pipe type piston and provides magnitude tracing standard set-up for minute gas flowmeter, using the deformation during the piston calibration cylinder prevention long-time use of glass material, it is easy to operate, it is unlikely to deform, measurement is accurate, and calibration effect is good, improves measurement accuracy.
Description
Technical field
It the utility model is related to a kind of piston type gas flow caliberating device for being used to measure gas flow.
Background technology
Pipeline bore in gas flow metering device of the prior art may be only available for flowing greatly generally in more than DN25
Measure the calibration of gas flowmeter；Minute gas flow measurement is generally using glass rotameter, soap film flowmeter, mass flow
Meter etc., such minute gas flowmeter does not have suitable standard set-up to carry out magnitude tracing for it, inconvenient for operation；It is and existing at present
There is gas piston caliberating device to use stainless steel sleeve mostly, processing coordinates accuracy to be difficult to improve, uses for a long time
Easily deform upon afterwards, jacket volume changes, and seriously affects calibration result.
The content of the invention
Technical problem to be solved in the utility model is to provide one kind and can be applied to minute gas flow metering,
It is easy to operate, it is unlikely to deform, measurement is accurate, the piston type gas flow caliberating device of high certainty of measurement.
The piston type gas flow caliberating device of the utility model, meters under test one end pass through gas path pipe and air source inlet
Connection, the other end are connected by gas path pipe with source outlet, and gas flow mark is connected between meters under test and source outlet
Determine device, it is characterised in that：The gas flow caliberating device include be connected in series ball valve, glass pipe type piston calibration cylinder,
High-precision mass flow controller；
The gas flow caliberating device is in parallel for two-way, wherein demarcating cylinder series connection all the way for big stroke glass pipe type piston
Large range high precision mass flow controller is formed, and another way is high-precision for small stroke glass pipe type piston calibration cylinder series connection small-range
Mass flow controller is spent to form；
The glass pipe type piston calibration cylinder accuracy is 0.35 grade, and big stroke glass pipe type piston demarcates cylinder range model
Enclose for 0~50slpm, accuracy ± 1%FS；Small stroke glass pipe type piston calibration cylinder range ability is 0~500sccm, accurate
Exactness ± 1%FS；
A large amount of range of flow high accuracy mass flow controller measurement ranges are 0~50slpm, and a small amount of range of flow are high-precision
It is 0~500sccm to spend mass flow controller measurement range, a large amount of range of flow high accuracy mass flow controllers, small-range stream
The accuracy of the high-precision mass flow controller of amount is all ± 1%FS；
Pressure sensor and ball valve in parallel is additionally provided between the gas flow caliberating device and meters under test.
The piston type gas flow caliberating device of the utility model, is demarcated by the different trips gas flow of two tunnels parallel connection
Device can be applied to minute gas flow measurement, and demarcate cylinder by glass pipe type piston provides value for minute gas flowmeter
Trace to the source standard set-up, it is easy to operate using the deformation during the piston calibration cylinder prevention long-time use of glass material, it is not easy
Deformation, measurement is accurate, and calibration effect is good, improves measurement accuracy.
Brief description of the drawings
Fig. 1 is the piston type gas flow caliberating device flow control system pneumatic diagram of the utility model embodiment.
Embodiment
As shown in the figure, a kind of piston type gas flow caliberating device, meters under test one end are entered by gas path pipe and source of the gas
Mouth connection, the other end are connected by gas path pipe with source outlet, and gas flow is connected between meters under test and source outlet
Caliberating device, gas flow caliberating device include the ball valve, glass pipe type piston calibration cylinder, high-precision mass flow being connected in series
Controller；Gas flow caliberating device is in parallel for two-way, wherein it is a large amount of to demarcate cylinder series connection all the way for big stroke glass pipe type piston
Journey high accuracy mass flow controller is formed, and another way demarcates cylinder series connection small-range high accuracy matter for small stroke glass pipe type piston
Flow controller is measured to form；The calibration cylinder accuracy of glass pipe type piston is 0.35 grade, and big stroke glass pipe type piston demarcates cylinder
Range ability is 0~50slpm, accuracy ± 1%FS；Small stroke glass pipe type piston calibration cylinder range ability for 0~
500sccm, accuracy ± 1%FS；A large amount of range of flow high accuracy mass flow controller measurement ranges are 0~50slpm, in a small amount
Range of flow high accuracy mass flow controller measurement range is 0~500sccm, a large amount of range of flow high accuracy mass flow controls
The accuracy of device, a small amount of range of flow high accuracy mass flow controllers is all ± 1%FS；Gas flow caliberating device and instrument to be measured
The pressure sensor and ball valve of parallel connection are additionally provided between table.
The utility model includes one big stroke glass pipe type piston calibration cylinder, supporting one high-precision mass flow control
Device, one small stroke glass pipe type piston demarcate cylinder, supporting one high-precision mass flow controller；Glass pipe type piston is demarcated
Cylinder does piston sleeve using glass, avoids because long-time is using the deformation occurred, and can Real Time Observation piston motion situation.Greatly
Stroke glass pipe type piston range ability (0~50) slpm, small stroke glass pipe type piston range ability (0~500) sccm are accurate
Exactness is 0.35 grade.
High-precision mass flow controller is used to fast, accurately set calibrational capacity point.Big stroke glass pipe type piston
Demarcate supporting high accuracy mass flow controller range ability (0~50) slpm, accuracy ± 1%FS of cylinder；Small stroke glass tube
Supporting high accuracy mass flow controller range ability (0~500) sccm, accuracy ± 1%FS of formula piston calibration cylinder.
The beneficial effects of the utility model are：Using glass sleeve, not only can real-time monitored piston motion situation, but also avoid
Because use for a long time deforms upon；Glass pipe type piston is demarcated cylinder and is matched with high-precision mass flow controller, realizes
Both glass pipe type piston calibration cylinder proving flowmeter can have been used, high-precision mass flow controller calibrational capacity can also be used
Meter；The high-precision mass flow controller of glass pipe type piston calibration cylinder calibration can be used, the moment ensures high-precision mass flow control
The metering performance of device processed.
The specific implementation of the utility model：Cylinder calibrational capacity timing is demarcated using glass pipe type piston, according to flowmeter
Range ability selection glass pipe type piston calibration cylinder, sets detection flows point, flow is steady using high-precision mass flow controller
After fixed, glass pipe type piston is run, flowmeter indicating value and glass pipe type piston indicating value is contrasted, obtains the error of indication of flowmeter.
Using high-precision mass flow controller calibrational capacity timing, high-precision mass flow control is selected according to flowmeter range ability
Device, sets detection flows point, and after stability of flow, contrast flowmeter indicating value and high-precision mass flow controller indicating value, are flowed
The error of indication of gauge.During calibration high accuracy mass flow controller, supporting glass pipe type piston calibration cylinder is selected, passes through setting
After high-precision mass flow controller, high-precision mass flow controller indicating value and glass pipe type piston indicating value are contrasted, obtains height
Accurate mass flow controllers correction value.
The piston type gas flow caliberating device of the utility model, is demarcated by the different trips gas flow of two tunnels parallel connection
Device can be applied to minute gas flow measurement, and demarcate cylinder by glass pipe type piston provides value for minute gas flowmeter
Trace to the source standard set-up, it is easy to operate using the deformation during the piston calibration cylinder prevention long-time use of glass material, it is not easy
Deformation, measurement is accurate, and calibration effect is good, improves measurement accuracy.
Measurement of gas flow field is the utility model is related to, is a kind of glass pipe type for minute gas meter proof
Piston gas flow standard device.The utility model is made using wide range glass pipe type piston and small-range glass pipe type piston group
For main standard, high-precision mass flow controller is matched, not only extends detection range, while realize both can be with
With glass pipe type piston proving flowmeter, and high-precision mass flow controller proving flowmeter can be used, glass can also be used
The high-precision mass flow controller of tubular type piston calibration.
The utility model provides a kind of glass pipe type piston for minute gas flow meter calibration and demarcates cylinder gas stream
Standard set-up is measured, the sleeve deformation after long-time use is avoided, solves gas flowmeter of the existing apparatus to tiny flow quantity
Magnitude tracing problem, realizes the alternative of scaling method, can use piston group proving flowmeter, can also use high-precision matter
Flow controller proving flowmeter is measured, while high-precision mass flow controller indicating value can also be calibrated with piston group.
Claims (5)
1. a kind of piston type gas flow caliberating device, meters under test one end is connected by gas path pipe with air source inlet, another
End is connected by gas path pipe with source outlet, and gas flow caliberating device is connected between meters under test and source outlet, its
It is characterized in that：The gas flow caliberating device includes the ball valve, glass pipe type piston calibration cylinder, high-precision quality being connected in series
Flow controller.
2. piston type gas flow caliberating device according to claim 1, it is characterised in that：The gas flow calibration dress
Two-way parallel connection is set to, wherein demarcating cylinder series connection large range high precision mass flow controller all the way for big stroke glass pipe type piston
Form, another way is demarcated cylinder series connection small-range high accuracy mass flow controller for small stroke glass pipe type piston and formed.
3. piston type gas flow caliberating device according to claim 2, it is characterised in that：The glass pipe type piston mark
Safety barrel accuracy is 0.35 grade, and big stroke glass pipe type piston calibration cylinder range ability is 0~50slpm, accuracy ± 1%
FS；Small stroke glass pipe type piston calibration cylinder range ability is 0~500sccm, accuracy ± 1%FS.
4. piston type gas flow caliberating device according to claim 2, it is characterised in that：A large amount of range of flow are high-precision
It is 0~50slpm to spend mass flow controller measurement range, and a small amount of range of flow high accuracy mass flow controller measurement ranges are 0
~500sccm, a large amount of range of flow high accuracy mass flow controllers, a small amount of range of flow high accuracy mass flow controllers it is accurate
Degree is all ± 1%FS.
5. piston type gas flow caliberating device according to claim 1, it is characterised in that：The gas flow calibration dress
Put and pressure sensor and ball valve in parallel is additionally provided between meters under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571020.3U CN207351522U (en) | 2017-05-22 | 2017-05-22 | Piston type gas flow caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571020.3U CN207351522U (en) | 2017-05-22 | 2017-05-22 | Piston type gas flow caliberating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207351522U true CN207351522U (en) | 2018-05-11 |
Family
ID=62361511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720571020.3U Active CN207351522U (en) | 2017-05-22 | 2017-05-22 | Piston type gas flow caliberating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207351522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099996A (en) * | 2018-09-13 | 2018-12-28 | 苏州市计量测试院 | A kind of minute gas flowmeter calibrating installation |
| CN112945359A (en) * | 2021-03-29 | 2021-06-11 | 开封市全盛流量计衬里有限公司 | Calibration device for flow testing tool of electromagnetic flowmeter |
-
2017
- 2017-05-22 CN CN201720571020.3U patent/CN207351522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099996A (en) * | 2018-09-13 | 2018-12-28 | 苏州市计量测试院 | A kind of minute gas flowmeter calibrating installation |
| CN112945359A (en) * | 2021-03-29 | 2021-06-11 | 开封市全盛流量计衬里有限公司 | Calibration device for flow testing tool of electromagnetic flowmeter |
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