CN206311156U - A kind of wide-range gas flowmeter - Google Patents
A kind of wide-range gas flowmeter Download PDFInfo
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- CN206311156U CN206311156U CN201621340652.0U CN201621340652U CN206311156U CN 206311156 U CN206311156 U CN 206311156U CN 201621340652 U CN201621340652 U CN 201621340652U CN 206311156 U CN206311156 U CN 206311156U
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- flow
- sensor
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- microcontroller
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Abstract
The utility model is related to a kind of wide-range gas flowmeter, including housing, housing top is provided with flow integrator, inner walls are provided with flow sensor and thermal acceleration degree sensor, flow integrator is electrically connected with temperature sensor and pressure sensor, temperature sensor and pressure sensor are arranged on measurement pipeline, flow integrator is also electrically connected with for the speed probe of measurement motor rotating speed and the valve element openness measuring device for measuring flow control valve aperture, and speed probe is arranged on motor.The utility model measures the aperture of regulating valve and the rotating speed of air compressor motor to judge to manage change and the size of flow of interior flow by setting valve element Measuring opening device and speed probe, according to testing result, selects the sensor of metering.Change of the utility model to flow is more sensitive, and the switching of sensor more accurately and timely, improves the accuracy and precision of the utility model metering.
Description
Technical field
The utility model is related to flowmeter technology field, more particularly to a kind of wide-range gas flowmeter.
Background technology
Flowmeter is a kind of measurement apparatus for being widely used in measurement gas or fluid flow, at present, the conventional instrument of in the market
, due to the limitation of flow measurement range, general range is all in 1: 30 or so, only thermal gas flowmeter and Roots's flow for table
The range ability of meter is relatively wide, typically 1: 200 or so.Due to the air-flow velocity in gas pipeline often occur it is too fast and excessively slow
Situation occur, more than the flow rates that instrument can be measured, the air-flow beyond measures range typically all can not be by flow instrument
Accurately record, especially less than the situation of Lower Range, or even sometimes basic just record is less than flow number, therefore width
The gas flowmeter of range receives the high praise of user.
But, the gas flowmeter of prior art wide-range is used flow sensor and the compound system of thermal acceleration degree sensor
The gas flowmeter made can according to the pressure value in the size of gas flow or pipeline, select by flow sensor element or
Thermal acceleration degree sensor element, due to gas flow control diversification in the prior art, the flow control of gas can be by changing
Become the motor operation frequency of air compressor machine or reconcile the modes such as flow control valve and control, therefore, to adapt to various workplaces, flow
Meter also needed in control mode it is further perfect, with improve flowmeter metering accuracy.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of variable accurately, the more perfect width of control mode
Span gas flowmeter.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of wide-range gas flowmeter, including shell
Body, the housing top is provided with flow integrator, and the inner walls are provided with flow sensor and thermal acceleration degree sensor,
The flow integrator is electrically connected with temperature sensor and pressure sensor, and the temperature sensor and pressure sensor are arranged on
On measurement pipeline, the flow integrator is also electrically connected with for the speed probe of measurement motor rotating speed and for measuring flow
The valve element openness measuring device of control valve opening, the speed probe is arranged on motor.
Used as preferred technical scheme, the flow integrator includes microcontroller, and the pressure sensor and temperature are passed
Sensor is electrically connected by amplifying circuit and A/D change-over circuits with the microcontroller, and the microcontroller is also electrically connected with gating electricity
Road, the gating circuit circuit is electrically connected with the flow sensor and thermal acceleration degree sensor.
Used as preferred technical scheme, the valve element openness measuring device is differential pressure pickup, the differential pressure pickup peace
Between the pipeline of the flow control valve both sides.
Used as preferred technical scheme, the microcontroller is electrically connected with signal processing circuit, the differential pressure pickup and
The speed probe is electrically connected by the signal processing circuit with the microcontroller.
Used as preferred technical scheme, the microcontroller is also electrically connected with wireless communication module, and the microcontroller leads to
Cross wireless communication module carries out radio communication with monitor terminal.
By adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model is by setting valve element
Measuring opening device and speed probe, measure the aperture of regulating valve and the rotating speed of air compressor motor to judge to manage the change of interior flow
Change the size with flow, according to testing result, select the sensor of metering.The utility model can be according to the detection knot of sensor
Fruit automatically selects flow sensor or the thermal acceleration degree sensor of wide-range is measured, by using valve element Measuring opening device
With the change size that speed probe can in time judge flow, microcontroller is sent control signal in time, select appropriate amount
The sensor of journey carries out flow measurement, and the selection of sensor is more accurate, and change of the utility model to flow is more sensitive, passes
The switching of sensor more accurately and timely, improves the accuracy and precision of the utility model metering.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of the utility model embodiment；
Fig. 2 is the theory diagram of flow integrator in Fig. 1.
Specific embodiment
As Fig. 1 and Fig. 2 jointly shown in, a kind of wide-range gas flowmeter, including housing, housing top is provided with flow product
Calculate instrument, inner walls are provided with flow sensor and thermal acceleration degree sensor, flow integrator be electrically connected with temperature sensor and
Pressure sensor, temperature sensor and pressure sensor are arranged on measurement pipeline, and flow integrator is also electrically connected with for surveying
Measure the speed probe and the valve element openness measuring device for measuring flow control valve aperture of motor speed, speed probe peace
On motor, it is easy to test the speed.
Flow integrator includes microcontroller, and pressure sensor and temperature sensor change electricity by amplifying circuit and A/D
Road electrically connects with microcontroller, and microcontroller is also electrically connected with gating circuit, gating circuit circuit by pre-amplification circuit with
Flow sensor and thermal acceleration degree sensor are electrically connected.
Microcontroller is also electrically connected with wireless communication module, and microcontroller is carried out by wireless communication module with monitor terminal
Radio communication, wireless communication module is used to carry out data communication with monitor terminal such as mobile terminal or intelligent terminal.
Microcontroller is also electrically connected with memory, for data storage.
Microcontroller is electrically connected with interface circuit for being connected with such as external equipment such as computer and instrument.
Interface circuit is used to be connected with equipment etc. computer including RS485 interfaces；D/A change-over circuits are used for and output equipment
Connection.
Microcontroller is also electrically connected with liquid crystal display drive circuit, and liquid crystal display drive circuit is electrically connected with LCDs.
In the present embodiment, valve element openness measuring device is differential pressure pickup, and differential pressure pickup is arranged on flow control valve two
Between the pipeline of side, during due to air-flow by flow control valve, the aperture of regulating valve can influence the flow of air-flow, by measurement stream
Pressure differential in the side ducts of adjustable valve two, judges control valve opening.
Microcontroller is electrically connected with signal processing circuit, differential pressure pickup and speed probe by signal processing circuit with
Microcontroller is electrically connected, and be amplified the signal that differential pressure pickup and speed probe are transmitted or A/D by the signal processing circuit
Microcontroller is sent to after conversion.
Operation principle of the present utility model is：When circuit goes up electricity for the first time, self-inspection is performed, thermal acceleration degree sensing is given tacit consent to after finishing
Device works, and performs intermittent scanning, decides whether that gating switching is conventional according to current operation result after flow velocity is detected
Flow sensor, or direct labor sets acquiescence sensor states on the premise of user understands flow.
During flow monitoring, when needing by carrying out speed governing to control flow to equipment such as air compressor machines, or
Needs are adjusted during flow by controlling the aperture of flow control valve, and microcontroller is by detecting motor speed or flow control valve
Aperture switched between flow sensor and thermal acceleration degree sensor：When the motor speed for detecting is less than threshold value, choosing
Circuit passband selection flow sensor is measured；When the motor speed for detecting is higher than threshold value, gating circuit selection thermal acceleration degree
Sensor carries out the metering method of wide-range；When the pressure difference that differential pressure pickup is detected is more than threshold value, flow control valve is judged
Aperture is smaller, and flow is small in pipe, and gating circuit selection flow sensor is measured；When the pressure difference that differential pressure pickup is detected is big
In threshold value, judge that the aperture of flow control valve is larger, flow is big in pipe, gating circuit selection thermal acceleration degree sensor is counted
Amount；When the aperture of motor speed and flow control valve is adjusted in loop simultaneously, the two can be detected simultaneously, or select one
Detection.
In the utility model, the valve element openness measuring device of flow control valve is not limited to differential pressure pickup, prior art
The sensor of the middle other Measuring openings for using, such as position sensor, are also applied for the utility model.
The utility model is also applied for various fluid flowmeters, and during detection, speed probe detection is water pump vane
The rotating speed of rotating speed or pump motor.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (5)
1. a kind of wide-range gas flowmeter, including housing, the housing top is provided with flow integrator, the inner walls
Flow sensor and thermal acceleration degree sensor are provided with, the flow integrator is electrically connected with temperature sensor and pressure sensing
Device, the temperature sensor and pressure sensor are arranged on measurement pipeline, it is characterised in that：The flow integrator is also electrically connected
It is connected to for the speed probe of measurement motor rotating speed and the valve element openness measuring device for measuring flow control valve aperture, institute
Speed probe is stated to be arranged on motor.
2. a kind of wide-range gas flowmeter as claimed in claim 1, it is characterised in that：The flow integrator includes micro-control
Device processed, the pressure sensor and temperature sensor are electrically connected by amplifying circuit and A/D change-over circuits with the microcontroller,
The microcontroller is also electrically connected with gating circuit, the gating circuit circuit and the flow sensor and thermal acceleration degree sensor
Electrical connection.
3. a kind of wide-range gas flowmeter as claimed in claim 1 or 2, it is characterised in that：The valve element aperture measurement dress
It is differential pressure pickup to put, and the differential pressure pickup is arranged between the pipeline of the flow control valve both sides.
4. a kind of wide-range gas flowmeter as claimed in claim 2, it is characterised in that：The microcontroller is electrically connected with letter
Number process circuit, the differential pressure pickup and the speed probe are by the signal processing circuit and microcontroller electricity
Connection.
5. a kind of wide-range gas flowmeter as claimed in claim 2, it is characterised in that：The microcontroller is also electrically connected with
Wireless communication module, the microcontroller carries out radio communication by wireless communication module and monitor terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621340652.0U CN206311156U (en) | 2016-12-08 | 2016-12-08 | A kind of wide-range gas flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621340652.0U CN206311156U (en) | 2016-12-08 | 2016-12-08 | A kind of wide-range gas flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206311156U true CN206311156U (en) | 2017-07-07 |
Family
ID=59250468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621340652.0U Expired - Fee Related CN206311156U (en) | 2016-12-08 | 2016-12-08 | A kind of wide-range gas flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206311156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827033A (en) * | 2020-12-29 | 2021-05-25 | 北京谊安医疗***股份有限公司 | Integrated display and control system of electronic flowmeter of anesthesia machine |
-
2016
- 2016-12-08 CN CN201621340652.0U patent/CN206311156U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827033A (en) * | 2020-12-29 | 2021-05-25 | 北京谊安医疗***股份有限公司 | Integrated display and control system of electronic flowmeter of anesthesia machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20191208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |