CN107842639A - A kind of electronic flowmeter and the flow control system with the flowmeter - Google Patents
A kind of electronic flowmeter and the flow control system with the flowmeter Download PDFInfo
- Publication number
- CN107842639A CN107842639A CN201711305864.4A CN201711305864A CN107842639A CN 107842639 A CN107842639 A CN 107842639A CN 201711305864 A CN201711305864 A CN 201711305864A CN 107842639 A CN107842639 A CN 107842639A
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- China
- Prior art keywords
- valve body
- electronic flowmeter
- adjusting spool
- stepper motor
- adjusting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flow Control (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention discloses a kind of electronic flowmeter and the flow control system with the flowmeter；The electronic flowmeter includes a valve body, is provided with air inlet and gas outlet, the inlet and outlet for gas；One stepper motor, it is fixed on the valve body, is received outer signals and is rotated fixed corresponding stroke；One adjusting spool, its one end are arranged in the valve body, and for adjusting the circulation aperture between the air inlet and the gas outlet, the other end is connected after passing the valve body with the output end of the stepper motor；The adjusting spool is connected by adjusting screw thread with the valve body, and axial displacement is produced in the valve body by the spinning movement of itself；The flow control system includes the electronic flowmeter.So, by setting stepper motor, the precision of Flow-rate adjustment can be greatly improved, and without adjusting manually；It is simple in construction, gas flow can be automatically controlled, gas flow can also be finely adjusted automatically, it is simply, convenient.
Description
Technical field
The present invention relates to flow measurement field, and in particular to a kind of electronic flowmeter and the flow with the flowmeter control
System.
Background technology
Oxygenerator industry generally uses traditional buoys flowmeter at present, and the flowmeter needs client to adjust manually, and due to
The error of float and scale, cause such flowmeter accuracy poor；In addition, traditional buoys flowmeter can not be carried out to gas flow
Monitoring, if gas flow has fuctuation within a narrow range, traditional buoys flowmeter can not be automatically to Flow-rate adjustment.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
The content of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of electronic flowmeter first, its
Including：
One valve body, is provided with air inlet and gas outlet, the inlet and outlet for gas；
One stepper motor, it is fixed on the valve body, is received outer signals and is rotated fixed corresponding stroke；
One adjusting spool, its one end are arranged in the valve body, for adjusting between the air inlet and the gas outlet
Circulation aperture, the other end is connected after passing the valve body with the output end of the stepper motor；
The adjusting spool is connected by adjusting screw thread with the valve body, by the spinning movement of itself in the valve body
Produce axial displacement；
The stepper motor is detachable, is so easy to repair and changes.
Preferably, the electronic flowmeter also includes a connecting shaft, its one end is connected with the output end of the stepper motor,
One end that the other end passes the valve body with the adjusting spool is connected, and the spinning movement of the stepper motor is passed to described
Adjusting spool.
Preferably, the output end and the connecting shaft, the connecting shaft and among the adjusting spool two at least one
It is individual to be in axial sliding connection.
Preferably, the output end of the connecting shaft and the stepper motor is in the radially fixed of the connecting shaft, in axial direction
It is slidably connected.
Preferably, the output end is flat column, one end that the connecting shaft is connected with the output end has
Link slot corresponding to shape；The output end inserts the link slot.
Preferably, the output end is fixedly connected with the connecting shaft, the connecting shaft is with the adjusting spool in axial direction
It is slidably connected.
Preferably, being additionally provided with bonnet on the valve body, the bonnet interior is provided with circular hole, and the adjusting spool passes through
The circular hole and the connection axis connection.
Preferably, the bonnet includes threaded cap and fixed part, the fixed part has external screw thread, and the valve body has interior
Screw thread, the bonnet, which is connected through a screw thread, to be fixed on the valve body；The threaded cap is arranged on the fixed part upper end and edge
Extend radially outwardly.
Preferably, being provided with opening in the valve body, the opening is connected with the air inlet, the gas outlet；
The adjusting spool lower end is provided with cynapse, and the cynapse is inserted in the opening.
Preferably, the air inlet is arranged on the both sides of the opening with the adjusting spool.
Secondly a kind of flow control system with electronic flowmeter described above is provided, it also includes：
Instruction inputting device, for inputting control instruction；
Processor, the control instruction is received, and be converted to corresponding pulsed quantity and send；
Described electronic flowmeter, the pulsed quantity is received, and corresponding actions are made by the stepper motor, control gas
Body flow；
Sensor, monitors the actual value of the gas flow flowed through, and is transferred to the processor；
The processor receives the actual value, and is compared with control instruction, if not being consistent, generates new described
Pulsed quantity is sent to the electronic flowmeter, the stepper motor is made corresponding modification action.
Preferably, the sensor is arranged on the electronic flowmeter rear end.
Compared with the prior art the beneficial effects of the present invention are：So, by setting stepper motor, can greatly improve
The precision of Flow-rate adjustment, and without adjusting manually；Screw thread is adjusted by setting, the rotary motion of adjusting spool is converted into straight line
Motion, the precision of regulation can be further improved on the basis of before, reaches the purpose accurately controlled；And the electronic flow
Compact-sized, small volume is counted, is easily installed and uses；In addition, compact volume so that the electronic flowmeter can be mounted
In the inside of oxygenerator etc., the issuable interference of outward appearance to oxygenerator etc. can be so excluded, makes the industry of product appearance
It is designed with bigger operating space；It is simple in construction, gas flow can be not only automatically controlled, gas flow can also be entered automatically
Row fine setting, eliminates the fluctuation of gas flow, and process is simple, convenient；And it can find that other reasonses etc. cause in time by monitoring
Gas flow change, to carry out latter step processing.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in various embodiments of the present invention
The accompanying drawing used is briefly described.
Fig. 1 is the structure chart of the electronic flowmeter of the present invention；
Fig. 2 is the profile of the electronic flowmeter of the present invention；
Fig. 3 is the fragmentary cross-sectional view one of the electronic flowmeter of the present invention；
Fig. 4 is the fragmentary cross-sectional view two of the electronic flowmeter of the present invention；
Fig. 5 is the structure chart one of the flow control system of the present invention；
Fig. 6 is the structure chart two of the flow control system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment 1
As shown in figure 1, it is the structure chart of the application electronic flowmeter；With reference to Fig. 2, wherein, the electronic flowmeter bag
Include：
One valve body 1, is provided with air inlet 12 and gas outlet 13, the inlet and outlet for gas；
One stepper motor 2, it is fixed on the valve body 1, is received outer signals and is rotated fixed corresponding stroke；
One adjusting spool 3, its one end are arranged in the valve body 1, for adjusting the air inlet 12 and the gas outlet
Circulation aperture between 13, the other end are connected after passing the valve body 1 with the output end 21 of the stepper motor 2；
The adjusting spool 3 is connected by adjusting screw thread 31 with the valve body 1, by the spinning movement of itself in the valve
Axial displacement is produced in body 1.
So, to the regulation of gas flow/flow velocity, actually to the opening between air inlet 12 and gas outlet 13
The size in footpath is adjusted；When needing that the circulation aperture between air inlet 12 and gas outlet 13 is adjusted, stepper motor 2
The Regulate signal in the external world can be received, and (characteristic of of stepper motor 2 itself is exactly can be with for angle according to corresponding to rotating Regulate signal
The rotation for the angle being determined, and precision is very high)；Because stepper motor 2 is connected with the adjusting spool 3, institute can be driven
State adjusting spool 3 and rotate identical angle；The adjusting spool 3 is connected with valve body 1 by adjusting screw thread 31, and its motion mode is
Screw, after adjusting spool 3 rotates, due to adjusting the effect of screw thread 31, the screw of adjusting spool 3 is converted to
Linear motion, wherein, the stepper motor 2 for driving adjusting spool 3 to rotate is fixed on valve body 1, can't be in the adjusting spool 3
Axis direction on produce displacement, therefore after adjusting spool 3 rotates, displacement can be produced in the axial direction；The adjusting spool 3
Moved into valve body 1, the aperture of supplied gas flowing in valve body 1 can be gradually blocked, conversely, can then expand the circulation aperture；This
Sample, by rectilinear movement of the adjusting spool 3 in valve body 1, the circulation aperture between air inlet 12 and gas outlet 13 can be adjusted
Size, and then adjust flow/flow velocity of gas.
So, by setting stepper motor 2, the precision of Flow-rate adjustment can be greatly improved, and without adjusting manually；Pass through
Regulation screw thread 31 is set, the rotary motion of adjusting spool 3 is converted into linear motion, can further be carried on the basis of before
The precision of top adjustment, reach the purpose accurately controlled.And the electronic flowmeter is compact-sized, small volume, is easily installed and makes
With.In addition, compact volume so that the electronic flowmeter can be installed in the inside of oxygenerator etc., can so exclude
The issuable interference of outward appearance to oxygenerator etc., makes the industrial design of product appearance have bigger operating space.
So, the rotation amount of stepper motor 2 controls to adjust the stroke up and down of valve element 3, and then the hole of the metering orifice of application valve body 1
Footpath size, finally realize the control to flow.
Embodiment 2
Electronic flowmeter as described above, the present embodiment are different from part and are that the electronic flowmeter also includes
One connecting shaft 4, its one end are connected with the output end 21 of the stepper motor 2, and the other end and the upper end of the adjusting spool 3 (are worn
Go out one end of the valve body 1) connection, the spinning movement of the stepper motor 2 is passed into the adjusting spool 3, makes the valve
Core does synchronous and angle identical with the output end 21 of the stepper motor 2 and rotated.
So, the stepper motor 2 and the adjusting spool 3 are connected, it is simple in construction, it is easy to connect.
Embodiment 3
Electronic flowmeter as described above, the present embodiment are different from part and are, the connecting shaft 4 and the stepping
The output end 21 of motor 2 is radially fixed the connecting shaft 4, and slide axially connection；So, the adjusting spool 3 is turning
Axial displacement can be produced when dynamic, the connecting shaft 4 is slidably connected in the axial output end 21 with the stepper motor 2, can disappeared
Except the axial displacement of adjusting spool 3, on interference caused by the output end 21, (interference can influence the axial direction of adjusting spool 3 in turn
Displacement), and then improve the accuracy of control.
Embodiment 4
Electronic flowmeter as described above, the present embodiment are different from part and are, the output end 21 is flat
Column, the connecting shaft 4 and one end that the output end 21 connects have the corresponding link slot 41 of shape；The output end 21
The link slot 41 is inserted, so as to drive the synchronous rotary of connecting shaft 4.
The cross section of the output end 21 is identical, and so, the output end 21 is with the link slot 41 in the connecting shaft 4
Axial direction can be with relative motion.
Preferably, the flat column can be cylindroid of the cross section for ellipse；Can also be that cross section is half
Round semicolumn；As long as it is not cylinder of the cross section for circle, connecting shaft 4 can be driven to rotate.
Embodiment 5
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 3, the output end
21 be cylinder, is provided with least one raised 43；One end that the connecting shaft 4 is connected with the output end 21 has connection
Groove 41, it is provided with the link slot 41 and is inserted with the raised 43 corresponding axially arranged inside groove 42, the output end 21
The link slot 41, described raised 43 slide axially along the inside groove 42.
So, when rotated, described raised 43 are stuck in corresponding inside groove 42 to the output end 21, drive the link slot 41
(connecting shaft 4) is rotated in (connecting shaft 4) radial action；After the adjusting spool 3 produces axial displacement, link slot 41
Produce axial displacement therewith, now, projection 43 along corresponding inside groove 42 in axial displacement, to eliminate the axial displacement of adjusting spool 3
Interference, improve the accuracy to pore size control.
Embodiment 6
Electronic flowmeter as described above, the present embodiment are different from part and are, the output end 21 has described
Link slot 41, the outwardly convex of connecting shaft 4, inserts the link slot 41.So, it is easy to use.
In the present embodiment, the setting of output end 21 and the junction of connecting shaft 4, with embodiment 4/5 on the contrary, so still having
There is elimination to disturb, improve the effect of accuracy, and it is easy to use.
Embodiment 7
Electronic flowmeter as described above, the present embodiment are different from part and are, the connecting shaft 4 and adjusting spool
3 in the radially fixed of the connecting shaft 4, and slide axially connection；So, the adjusting spool 3 can produce axial direction when rotating
Displacement, the connecting shaft 4 are slidably connected in axial direction and adjusting spool 3, can eliminate the axial displacement of adjusting spool 3 to the output
Interference (interference can influence the axial displacement of adjusting spool 3 in turn) caused by end 21, and then improve the accuracy of control.
Embodiment 8
Electronic flowmeter as described above, the present embodiment are different from part and are, the adjusting spool 3 passes described
One end of valve body 1 is flat column, and one end that the connecting shaft 4 connects with the adjusting spool 3 has shape corresponding
Link slot 41；The adjusting spool 3 inserts the link slot 41, so as to which the connecting shaft 4 drives the synchronous rotation of the adjusting spool 3
Turn.
The cross section that the adjusting spool 3 inserts one end of the link slot 41 is identical, so, the adjusting spool 3 with
The link slot 41 can be with relative motion in the axial direction of the connecting shaft 4.
Preferably, the flat column can be cylindroid of the cross section for ellipse；Can also be that cross section is half
Round semicolumn；As long as it is not cylinder of the cross section for circle, can be rotated under the drive of connecting shaft 4.
Embodiment 9
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 4, the regulating valve
One end that core 3 passes the valve body 1 is cylinder, is provided with least one raised 43；The connecting shaft 4 has link slot
41, it is provided with the link slot 41 and the raised 43 corresponding axially arranged inside groove 42, the adjusting spool 3 inserts institute
Link slot 41 is stated, described raised 43 slide axially along the inside groove 42.
So, when rotated, described raised 43 are stuck in corresponding inside groove 42 to the connecting shaft 4, drive the adjusting spool 3
In (connecting shaft 4) radial action, rotated；After the adjusting spool 3 produces axial displacement, projection 43 is along corresponding inside groove
42 in axial displacement, to eliminate the interference of the axial displacement of adjusting spool 3, improves the accuracy to pore size control.
Embodiment 10
Electronic flowmeter as described above, the present embodiment are different from part and are, the adjusting spool 3 passes described
One end of valve body 1 has the link slot 41, the outwardly convex of connecting shaft 4, inserts the link slot 41.So, user
Just.
In the present embodiment, the adjusting spool 3 passes one end of the valve body 1 and the setting of the junction of connecting shaft 4, with reality
Apply in example 4/5 on the contrary, so still having and eliminate interference, improve the effect of accuracy, and it is easy to use.
Embodiment 11
Electronic flowmeter as described above, the present embodiment are different from part and are, can be with the electronic flowmeter
Any one in situations below be present：
The output end 21 of the stepper motor 2 is fixedly connected with the connecting shaft 4, the connecting shaft 4 and the regulating valve
Core 3 slides axially connection；
The output end 21 of the stepper motor 2 slides axially with the connecting shaft 4 and is connected, the connecting shaft 4 with it is described
Adjusting spool 3 is fixedly connected；
The output end 21 of the stepper motor 2 slides axially with the connecting shaft 4 and is connected, the connecting shaft 4 with it is described
Adjusting spool 3 slides axially connection.
So, the influence that the axial movement of adjusting spool 3 is brought to final control accuracy can be eliminated.In other words,
The output end 21 is in axial sliding connection with the connecting shaft 4, the connecting shaft 4 with least one in the adjusting spool 3.
Embodiment 12
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in Fig. 2 on the valve body 1
Be additionally provided with bonnet 14, the bonnet 14 is internally provided with circular hole 143, the adjusting spool 3 through the circular hole 143 with it is described
Connecting shaft 4 connects.
So, convenient processing, assembly and disassembly.
The bonnet 14 includes threaded cap 141 and fixed part 142, and the fixed part 142 has external screw thread, with the valve body
1 has internal thread, and the bonnet 14, which is connected through a screw thread, to be fixed on the valve body 1；The threaded cap 141 is arranged on described solid
Determine the upper end of portion 142 and extend radially outward.So, aspect assembly and disassembly.
The contact surface of the threaded cap 141 and the valve body 1 is provided with static seal, so, can to the bonnet 14 with
The threaded connection place of the valve body 1 is sealed, and prevents from revealing.
Internal thread is provided with the circular hole 143 of the threaded cap 141, the side wall of the adjusting spool 3 is provided with external screw thread,
The internal thread is connected with the external screw thread, and the rotary motion of the adjusting spool 3 is converted into linear motion.
The lower end of adjusting spool 3 is surrounded with seal groove 32, and the dynamic sealing is arranged in the seal groove 32, will
The adjusting spool 3 prevents that the adjusting spool 3 is relatively described with being sealed at the inwall of circular hole 143 of the fixed part 142
Leakage is produced when fixed part 142 moves.
Opening 15 is provided with the valve body 1, the opening 15 connects with the air inlet 12, the gas outlet 13
Connect, circulated for the gas.
The opening is arranged on the lower end of the adjusting spool 3, and coaxial with the adjusting spool 3, the regulating valve
The lower end of core 3 is against the opening；As such, it is desirable to adjust the circulation aperture between the air inlet 12 and the gas outlet 13
When, it is only necessary to adjust the lower end of adjusting spool 3 and the distance of the opening.
The lower end of adjusting spool 3 is provided with cynapse 33, and the cynapse 33 is inserted in the opening, so, sealing effect
Fruit is more preferable.
Wherein, the air inlet 12 is arranged on the both sides of the opening 15, so, the tune with the adjusting spool 3
Space where section valve element 3 can obtain better seal effect.(in the case that generally, particularly opening 15 is closed,
The air pressure of air inlet 12 is greater than the air pressure of gas outlet 13, and adjusting spool 3 passes the valve body 1, it is necessary to additionally to passing portion
Divide and sealed, if adjusting spool 3 connects with air inlet 12, then the air pressure in space where it is just bigger, and sealing is wanted
The problems such as asking higher, and being more prone to leakage)
Wherein, the air inlet 12 and gas outlet 13 can also enter line replacement according to actual conditions, using air inlet as going out
Gas port, gas outlet use as air inlet.
Embodiment 13
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 5, it is；Wherein,
The flow control system includes：
Instruction inputting device 5, for inputting control instruction；
Processor 6, the control instruction is received, and be converted to corresponding pulsed quantity and send；
Electronic flowmeter described above, the pulsed quantity is received, and corresponding actions is made by the stepper motor 2,
Control gas flow；
Sensor 7, monitors the actual value of the gas flow flowed through, and is transferred to the processor 6；
The processor 6 receives the actual value, and is compared with control instruction, if not being consistent, generates new institute
State pulsed quantity and be sent to the electronic flowmeter, the stepper motor 2 is made corresponding modification action.
So, user inputs the flow value of oxygen/other gases of oneself demand, the flow by instruction inputting device 5
Value is transferred to processor 6 as control instruction；The processor 6 receives the control instruction, according in the control instruction
Flow value, electron flowmeter sends corresponding pulsed quantity；After stepper motor 2 in electronic flowmeter receives pulse, according to
Pulsed quantity according to the direction of setting rotates certain angle, and (signal that the processor 6 is sent to electronic flowmeter is when needed
Also include：Rotation direction and pulsed quantity), and then adjust the size of the gas flow by electronic flowmeter；The sensor 7 is examined
The actual value of the gas flow of flow measurement warp, and processor 6 is transferred data to, if flow value and client that sensor 7 feeds back are defeated
The flow value entered is consistent, then electronic flowmeter keeps current working condition, if the flow value that sensor 7 feeds back inputs with client
Flow value it is inconsistent, processor 6 then send corresponding to pulse/pulsed quantity electron flowmeter stepper motor 2 make correspondingly
Modification action.Then sensor 7 again reads off the actual value of gas flow and is transferred to processor 6 and compares, until actual flow
Untill value is consistent with client's inlet flow value.
It is so simple in construction, gas flow can be not only automatically controlled, (in actual treatment gas flow, due to machinery
The influence of problem etc., the actual value of gas flow have small fluctuation, cause actual flow to produce error, now also need to more
Secondary to manually adjust, process is cumbersome) gas flow can also be finely adjusted automatically, the fluctuation of gas flow is eliminated, process is simple,
It is convenient；And by monitoring can find other reasonses (mechanical failure) etc. in time caused by gas flow change, it is latter to carry out
Step processing.
So, user only need by input unit input target gas flow, system can automatically by flow adjust to
Desired value, it is not necessary to which user is frequently adjusted, simple and convenient；It is safe.
Wherein, the stepper motor 2 is the opened loop control motor that electric impulse signal is changed into angular displacement or displacement of the lines.
In the case of non-overload, the rotating speed of motor, the position stopped being solely dependent upon the frequency and umber of pulse of pulse signal, without being loaded
The influence of change, when step actuator receives a pulse signal, it rotates one with regard to Driving Stepping Motor 2 by the direction of setting
The angle of individual fixation, it is referred to as " step angle ", its rotation is run step by step with fixed angle.Can be by controlling arteries and veins
Number is rushed to control angular displacement, so as to reach the purpose being accurately positioned；Electricity can be controlled by controlling pulse frequency simultaneously
The speed and acceleration that machine rotates, so as to reach the purpose of speed governing.
Embodiment 14
Flow control system as described above, the present embodiment is different from part and is, as shown in fig. 6, the flow
Control system also includes an alarm modules 8, and the alarm modules 8 are connected with the processor 6, to described in the processor 6
The situation that actual value is not consistent with the control instruction is recorded, right after the number or be not consistent of not being consistent persistently reaches threshold value
Outgoing goes out alarm.
So, can externally be sent after there was a mechanical failure or waits reason to cause gas flow can not recover for a long time
Alarm, avoid more heavy losses.
The alarm modules 8 are also connected with the sensor 7, the actual value of gas flow of the sensor 7 in monitoring
After generation suddenly change, to the signal an alert of alarm modules 8, the alarm modules 8 externally send alarm.So, may be used
To find (because caused by mechanical reason or breakage etc.) anomalous variation of gas flow in time, so as to handle as early as possible, damage is reduced
Lose.
The alarm modules 8 can be siren, and externally sound the alarm sound；The alarm modules 8 can also be buzzing
Device；The alarm modules 8 can also be flash lamp, externally send alarm light；The alarm modules 8 can also have for other
The device of prompting function, as long as can externally be reminded；The alarm modules 8 can also be according to actual conditions, will be upper
Stating may integrated treatment.
Embodiment 15
Flow control system as described above, the present embodiment are different from part and are that the instruction inputting device 5 is
Display screen with operation interface, user input the gas flow values of demand in operation interface, and display screen is by the gas of input
Body flow value is sent to the processor 6 as control instruction.So, it is easy to use, it is easy to show.
Embodiment 16
Flow control system as described above, the present embodiment are different from part and are that the sensor 7 is arranged on institute
Electronic flowmeter rear end is stated, so, is easy to detect the gas flow of electronic flowmeter outflow, eliminates gas stream all
Flowed fluctuation caused by the reason for road etc., improve the accuracy of detection data.
Embodiment 17
Flow control system as described above, the present embodiment are different from part and are that the processor 6 is STM32
Chip, it is mainly used to handle various data according to the program of input, the driving chip of stepper motor 2 is ULN2003, the type of sensor 7
Number it is OCS-3F (ultrasonic wave oxygen concentration flow sensor 7).
In the application, the upper end, lower end, upper part, the bottom that use grade the noun of locality, are with the electron stream in described Fig. 1
The judgement carried out based on gauge vertical display；If after the electronic flowmeter is put according to other positions, the corresponding noun of locality
It can change, but the relative position of each component still keeps constant in electronic flowmeter, and those skilled in the art are to this Shen
Please in content when being understood, this kind of situation should be considered.
Presently preferred embodiments of the present invention is the foregoing is only, is merely illustrative for the purpose of the present invention, and it is non-limiting
's.Those skilled in the art understands, many changes can be carried out to it in the spirit and scope that the claims in the present invention are limited,
Modification, in addition it is equivalent, but fall within protection scope of the present invention.
Claims (10)
- A kind of 1. electronic flowmeter, it is characterised in that including：One valve body, is provided with air inlet and gas outlet, the inlet and outlet for gas；One stepper motor, it is fixed on the valve body, is received outer signals and is rotated corresponding stroke；One adjusting spool, its one end are arranged in the valve body, for adjusting the stream between the air inlet and the gas outlet Through hole footpath, the other end are connected after passing the valve body with the output end of the stepper motor；The adjusting spool is connected by adjusting screw thread with the valve body, is produced by the spinning movement of itself in the valve body Axial displacement；The stepper motor is detachable.
- 2. electronic flowmeter as claimed in claim 1, it is characterised in that the electronic flowmeter also includes a connecting shaft, its One end is connected with the output end of the stepper motor, and one end that the other end passes the valve body with the adjusting spool is connected, will The spinning movement of the stepper motor passes to the adjusting spool.
- 3. electronic flowmeter as claimed in claim 2, it is characterised in that the output end and the connecting shaft, the connection Axle is in axial sliding connection with least one among the adjusting spool two.
- 4. electronic flowmeter as claimed in claim 3, it is characterised in that the output end is fixedly connected with the connecting shaft, The connecting shaft slides axially with the adjusting spool and is connected.
- 5. the electronic flowmeter as described in any claim in claim 2-4, it is characterised in that also set up on the valve body There is bonnet, the bonnet interior is provided with circular hole, and the adjusting spool passes through the circular hole and the connection axis connection.
- 6. electronic flowmeter as claimed in claim 5, it is characterised in that the bonnet includes threaded cap and fixed part, described Fixed part has external screw thread, and the valve body has internal thread, and the bonnet, which is connected through a screw thread, to be fixed on the valve body；It is described Threaded cap is arranged on the fixed part upper end and extended radially outward.
- 7. the electronic flowmeter as described in any claim in claim 1-4, it is characterised in that be provided with the valve body Opening, the opening are connected with the air inlet, the gas outlet；The adjusting spool lower end is provided with cynapse, described Cynapse is inserted in the opening.
- 8. electronic flowmeter as claimed in claim 7, it is characterised in that the air inlet is arranged on institute with the adjusting spool State the both sides of opening.
- 9. a kind of flow control system of the electronic flowmeter with described in any of the above-described claim, it is characterised in that also wrap Include：Instruction inputting device, for inputting control instruction；Processor, the control instruction is received, and be converted to corresponding pulsed quantity and send；Described electronic flowmeter, the pulsed quantity is received, and corresponding actions are made by the stepper motor, control gas stream Amount；Sensor, monitors the actual value of the gas flow flowed through, and is transferred to the processor；The processor receives the actual value, and is compared with the control instruction, if not being consistent, generates new described Pulsed quantity is sent to the electronic flowmeter, the stepper motor is made corresponding modification action.
- 10. flow control system as claimed in claim 9, it is characterised in that the sensor is arranged on the electronic flow Count rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711305864.4A CN107842639A (en) | 2017-12-11 | 2017-12-11 | A kind of electronic flowmeter and the flow control system with the flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711305864.4A CN107842639A (en) | 2017-12-11 | 2017-12-11 | A kind of electronic flowmeter and the flow control system with the flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112768380A (en) * | 2021-01-18 | 2021-05-07 | 北京七星华创流量计有限公司 | Gas flow regulating device and semiconductor processing equipment |
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| CN207473420U (en) * | 2017-12-11 | 2018-06-08 | 常州中进医疗器材股份有限公司 | A kind of electronic flowmeter |
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| CN101799025A (en) * | 2009-05-15 | 2010-08-11 | 武汉科技学院 | Internal feedback type incremental hydraulic throttling digital valve |
| CN201916532U (en) * | 2011-01-06 | 2011-08-03 | 佛山市三俊电子股份有限公司 | High-precision numerical-control thermostatic valve |
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| CN112768380A (en) * | 2021-01-18 | 2021-05-07 | 北京七星华创流量计有限公司 | Gas flow regulating device and semiconductor processing equipment |
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Application publication date: 20180327 |