CN106370261A - Photoelectric meter with defoaming function and metering method - Google Patents
Photoelectric meter with defoaming function and metering method Download PDFInfo
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- CN106370261A CN106370261A CN201610712640.4A CN201610712640A CN106370261A CN 106370261 A CN106370261 A CN 106370261A CN 201610712640 A CN201610712640 A CN 201610712640A CN 106370261 A CN106370261 A CN 106370261A
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- liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
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- Measuring Volume Flow (AREA)
Abstract
The invention relates to a photoelectric meter which has a defoaming function and can be used for eliminating bubbles when being used for metering liquid volume and a metering method. The photoelectric meter comprises a control module, a power module and a metering pipe, wherein the power module is electrically connected with the control module; the power module is connected with the metering pipe; and the control module can be used for controlling the power module to generate positive and negative pressure to inhale to-be-metered liquid into the metering pipe or press bubbles in the to-be-metered liquid in the metering pipe out of the to-be-metered liquid. The metering method comprises the following steps: providing a metering pipe; applying negative pressure to the metering pipe to inhale the liquid into the metering pipe; applying positive pressure to the metering pipe to press bubbles in the to-be-metered liquid in the metering pipe out of the to-be-metered liquid; continuously applying negative pressure to the metering pipe to continuously inhale the to-be-metered liquid into the metering pipe until the to-be-metered liquid in the metering pipe rises to a required liquid level. The photoelectric meter with the defoaming function and the metering method have the advantage of eliminating bubbles in a liquid when the liquid volume is metered.
Description
[technical field]
The present invention relates to liquid meter field, can eliminate bubble during particularly to a kind of metering liquid volume possesses froth breaking
The photoelectric metering instrument of function and metering method.
[background technology]
Accurate measurement liquid volume, all plays an important role to many industries such as current environmental protection, water utilities, and in prior art,
Using machinery metering it is impossible to eliminate the bubble in liquid more than metering liquid volume, make metering inaccurate.
Therefore, solve metering liquid volume during bubble impact, become the key in liquid meter field！
[content of the invention]
During overcoming metering liquid volume, alveolate problem in liquid, the invention provides a kind of metering liquid
The photoelectric metering instrument possessing defoaming function of bubble in liquid can be eliminated during volume, and provide a kind of metering liquid volume
When can eliminate the metering method of bubble in liquid.
The scheme that the present invention solves technical problem is to provide a kind of photoelectric metering instrument possessing defoaming function, for measuring liquid
Body volume, the photoelectric metering instrument that this possesses defoaming function includes control module, power plant module and gauge line, power plant module and control
Module is electrically connected with, and power plant module and gauge line connect, and described control module controls power plant module to produce positive/negative-pressure, when described control
Molding block controls power plant module to produce negative pressure, and liquid to be batched is inhaled in gauge line, when described control module controls power mould
Block produces malleation, and the bubble in liquid to be batched in gauge line is forced out liquid to be batched.
Preferably, described control module controls power plant module to produce alternate positive/negative-pressure.
Preferably, the described photoelectric metering instrument possessing defoaming function also includes flow control part, described flow control part and control module
Connect, described flow control part is used for controlling the liquid in gauge line to flow in/out.
Preferably, the described photoelectric metering instrument possessing defoaming function includes detection module, and described detection module includes lighting
Device and light-receiving device, described luminous organ and light-receiving device are located at the both sides of described gauge line respectively, and described luminous organ sends light and passes through meter
The center of circle of the section circle of buret is received by light-receiving device, and whether detection module occurs liquid volume in refraction detection gauge line according to light
And/or the bubble in liquid.
Preferably, when the liquid in described gauge line has bubble, the illumination that described luminous organ sends is sent out after being mapped on bubble
Raw refraction, the light intensity of what described light-receiving device received come from luminous organ diminishes.
Preferably, in 0.5cm-2.5cm, the illumination that described luminous organ sends is mapped at highest liquid level described metering bore
Reflect, what described light-receiving device received come from luminous organ light intensity diminish.
Preferably, the pressure of the malleation that described power plant module produces is 10kpa-20kpa, and it is negative that described power plant module produces
The pressure of pressure is 10kpa-30kpa.
A kind of metering method, comprises the following steps: provides a gauge line；Negative pressure is applied to gauge line, makes liquid suck meter
In buret；Malleation is applied to gauge line, makes the bubble in liquid to be batched in gauge line extrude liquid；Continue gauge line is applied
Negative pressure, makes liquid to be batched continue to suck the liquid level needed for gauge line liquid to be batched in gauge line rises to.
Preferably, negative pressure is applied to gauge line, so that liquid is sucked in gauge line, and malleation is applied to gauge line, make metering
Bubble in liquid to be batched in pipe extrudes liquid alternately；Or first carry out and negative pressure is applied to gauge line, make liquid to be batched
Body continues to suck the liquid level needed for gauge line liquid to be batched in gauge line rises to, then executes to gauge line applying
Malleation, makes the bubble in liquid to be batched in gauge line extrude liquid.
Preferably, the pressure of described malleation is 10kpa-20kpa, and the internal diameter of described gauge line is 0.5cm-2.5cm, described
The speed that liquid enters gauge line is 2cm each second3-4cm3.
Compared with prior art, the photoelectric metering instrument possessing defoaming function of the present invention includes control module and power mould
Block, power plant module and control module are electrically connected with, and power plant module can produce the bubble that malleation removes in gauge line, removes bubble removing
Simple and convenient, the persistent ailment that when eliminating metering liquid volume, bubble exists, make metering more accurate, improve accurate measurement rate, and
Control module realizes Automated condtrol, decreases the use of manpower, saves the cost of detection liquid volume.
The control module of the present invention controls the negative pressure of power plant module generation and malleation to be alternately produced, and that is, power plant module makes metering
Liquid in pipe rises, and power plant module extrudes liquid alternately the bubble in the liquid in gauge line, can be liquid
In bubble remove more thorough, make detection liquid volume more accurate.
The present invention includes flow control part, and flow control part can control the liquid in gauge line to flow in/out, that is, control liquid energy
No flow to gauge line or can flow out from gauge line it is achieved that controlling circulation or the disconnection of liquid, and flow control part and control
Molding block connects, and can automatically control liquid communication or disconnection, increased the efficiency of detection liquid volume.
Luminous organ of the present invention sends the center that light passes through the section of gauge line, and light will not reflect, and light-receiving device position holds
Easily determine, luminous organ is installed and light-receiving device is more convenient.Liquid enters light in gauge line and reflects, with the refraction principle of light,
Whether refraction detection liquid volume is occurred according to light, does not use mechanical detection, machinery repeatability will not be produced, accuracy of detection is more
Height, and do not affected by the turbidity of metering liquid and colourity when detecting.
, in 0.5cm-2.5cm, liquid liquid level in gauge line is concave for the metering bore of the present invention, and the liquid level of depression makes
Light therethrough can reflect, so that simpler with light detection liquid volume.
The malleation that the power plant module of the present invention produces is 10kpa-20kpa, and moderate pressure can be complete the bubble in liquid
Remove, and the pressure suffered by gauge line will not be excessive, increase the service life of gauge line, the negative pressure that power plant module produces is
10kpa-30kpa, can make the liquid rate of climb moderate, and liquid rises will not be too fast, makes accuracy of detection higher, and liquid rises
Will not be excessively slow, detection efficiency improves.
Compared with prior art, the metering method of the present invention, method is simple, and there is bubble when eliminating metering liquid volume
Persistent ailment., in 0.5cm-2.5cm, liquid liquid level in gauge line is concave for metering bore, and the liquid level of depression makes therethrough
Light can reflect, so that simpler with light detection liquid volume.The pressure of malleation is 10kpa-20kpa, and pressure is fitted
In, the bubble in liquid can be removed completely, and the pressure suffered by gauge line will not be excessive, increase the service life of gauge line.
The speed that liquid enters gauge line is 2cm each second3-4cm3, speed is moderate, and detection liquid volume is accurate and detection efficiency is high.
[brief description]
Fig. 1 is the perspective view of the photoelectric metering instrument that the present invention possesses defoaming function.
Fig. 2 is the perspective view at another visual angle of photoelectric metering instrument that the present invention possesses defoaming function.
Fig. 3 is the main structure diagram of the photoelectric metering instrument that the present invention possesses defoaming function.
Fig. 4 is the backsight structural representation of the photoelectric metering instrument that the present invention possesses defoaming function.
Fig. 5 is the partial enlargement structural representation of the photoelectric metering instrument a part possessing defoaming function in Fig. 3.
Fig. 6 is the partial structurtes cross-sectional schematic of the gauge line of photoelectric metering instrument possessing defoaming function in Fig. 5.
Fig. 7 is the schematic flow sheet of the metering method of the present invention.
Fig. 8 be in Fig. 7 metering method the variant embodiment of step s2 details schematic flow sheet.
[specific embodiment]
In order that the purpose of the present invention, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only in order to explain the present invention,
It is not intended to limit the present invention.
Refer to Fig. 1 and Fig. 2, the present invention provides a kind of photoelectric metering instrument 10 possessing defoaming function, for metering liquid
Volume, it includes power plant module 12, liquid circuit module 14, detection module 16, and control module 18.Power plant module 12 and control module
18 are electrically connected with, and power plant module 12 and liquid circuit module 14 connect, and it is liquid circuit module 14 that control module 18 controls power plant module 12
Power is provided, so that the liquid in liquid circuit module 14 is moved, detection module 16 and control module 18 are electrically connected with, and control module 18 is controlled
Detection module 16 processed detects the liquid level of the metering liquid in liquid circuit module 14, and then calculates the volume of metering liquid.Can manage
Solution, detection module 16 control module 18 of can getting along well connects, and the uncontrolled module 18 of detection module 16 controls voluntarily detection metering
The volume of liquid.Liquid as herein described is metering one of liquid and cleanout fluid or two kinds.
Power plant module 12 can make to produce malleation or negative pressure in liquid circuit module 14, when producing negative pressure, can make in liquid circuit module 14
Liquid levels rise, the negative pressure of generation is 10kpa-50kpa, preferably 10kpa-30kpa, more preferably 20-
30kpa, more preferably 20kpa, 25kpa.When producing malleation, the liquid level in liquid circuit module 14 can be made to decline, the normal pressure of generation
For 10kpa-25kpa, preferably 10kpa-20kpa, more preferably 15kpa, 16 or 18kpa.When producing malleation, if fluid path
Relatively extraneous closing in module 14, that is, the liquid having been enter into liquid circuit module 14 cannot return, and now pressure acts on liquid, liquid
If there are bubble in body, because bubble is gas, density is far smaller than liquid, then bubble under pressure, bubbles burst, liquid
In bubble be forced out liquid remove, so overcome the impact that the First Astronautic Research Institute for Measurement and Test of bubble liquid volume brings.
Refer to Fig. 3 and Fig. 4, liquid circuit module 14 includes black box 144, gauge line 141, connectedness 142, flow control part
143.Power plant module 12 passes through black box 144 and gauge line 141 connects, and gauge line 141 connects with connectedness 142 further,
Connectedness 142 passes through pipeline and flow control part 143 connects, and pipeline extracts metering liquid and/or cleanout fluid from outside.Flow control part 143 is used
In the controlling stream liquid measure size measuring liquid and/or cleanout fluid by the road.Gauge line 141 inner hollow, is used for holding metering liquid.
Detection module 16 is located at the side of gauge line 141, the volume of the metering liquid that its detection is located in gauge line 141, specifically, detection
Module 16, according to the liquid level measuring liquid in gauge line 141, measures the volume of metering liquid.Black box 144 prevents gas leakage
Or leakage body.It is appreciated that also black box 144 can be not provided with, allow power plant module 12 directly to connect with gauge line 141, protect
Demonstrate,prove air tight or liquid-tight.As another kind of deformation, flow control part 143 can omit.As a kind of deformation, connectedness 142
Directly connect with flow control part 143, flow control part 143 is contacted with external metrology liquid and/or cleanout fluid by pipeline, thus controlling liquid
Circulation or disconnection.
Gauge line 141 is the hollow circuit cylinder bodily form, and liquid can flow from gauge line 141, and gauge line 141 can make light transmission,
Preferably gauge line 141 is transparent material.The internal diameter of gauge line 141 between 0.5cm-2.5cm, preferably 0.6cm-1.5cm, more
It is preferably 0.7cm-1.2cm, most preferably 0.8cm, 0.9cm.When liquid is in gauge line 141, liquid level concave downward, become recessed
Face.The section of gauge line 141 is circle.Preferably, the internal diameter of gauge line 141 is change, and internal diameter size is from one end to another
End is from large to small.
Connectedness 142 is a hollow circuit cylinder bodily form, and gauge line 141 and connectedness 142 top connect, tubular connection
Part 142 has relative first end 1425 and the second end 1426, and the bottom of gauge line 141 is connected with the top of connectedness 142
Connect, and link position offers multiple metering liquid imports 1421, metering liquid outlet on the second end 1426, connectedness 142
1422, cleanout fluid import 1423 and rinse liquid outlet 1424.Cleanout fluid import 1423 is located at the first end of connectedness 142
1425, metering liquid outlet 1422 is located at the second end 1426 of connectedness 142.Metering liquid import 1421 and rinse liquid outlet 1424
It is opened in the bottom of connectedness 142, rinse liquid outlet 1424 is arranged near the second end 1426, metering liquid import 1421 is near the
One end 1425 is arranged, and measures liquid import 1421 than gauge line 141 near first end 1425.Metering liquid import 1421 is at least
For one, in the present embodiment, metering liquid import 1421 is seven, arranges successively in connectedness 142 bottom.Metering liquid is from metering liquid
Import 1421 enters in connectedness 142.Measure liquid outlet 1422 to be used for discharging metering liquid, cleanout fluid import 1423 is used for entering clearly
Washing liquid, rinse liquid outlet 1424 is used for discharging cleanout fluid.It is appreciated that metering liquid import 1421, metering liquid outlet 1422, cleaning
The position of liquid outlet 1423 and rinse liquid outlet 1424 can phase double replacement.Preferably, the metering liquid in gauge line 141 is from metering liquid
When outlet 1422 is discharged, power plant module 12 can produce malleation, makes metering liquid accelerate speed from gauge line 141 and connectedness 142
Or be easier to discharge, further preferably, make the pressure that metering liquid is discharged be 5kpa-10kpa.As the presently preferred embodiments, connectedness
142 length are preferably 15-30cm, and inside diameter is preferably 1mm-7mm, more excellent for 2mm-5mm, most preferably 3mm or 4mm.Clearly
Washing liquid outlet 1424 with gauge line 141 be preferably separately positioned on connectedness 142 same in the radial direction.Gauge line 141 and company
The link position of logical part 142 away from connectedness 141 the second end distance preferably 1cm-8cm, more excellent for 2cm-6cm, optimum is
3cm.
Metering liquid enters connectedness 142 by the metering liquid import 1421 of connectedness 142, and then enters gauge line 141, possesses
The photoelectric metering instrument 10 of defoaming function measured metering liquid amass after, metering liquid by measure liquid outlet 1422 discharge；Cleanout fluid by
The cleanout fluid import 1423 of connectedness 142 enters connectedness 142 and connectedness 142 is carried out, or cleanout fluid is further by even
Logical part 142 enters gauge line 141, connectedness 142 and gauge line 141 is carried out, after cleaning, cleanout fluid is from cleanout fluid simultaneously
Outlet 1424 discharge.
Each of connectedness 142 measures liquid import 1421, metering liquid outlet 1422, rinse liquid outlet 1423 and cleanout fluid
Outlet 1424 all connects a flow control part 143, the circulation through the metering liquid/cleanout fluid of flow control part 143 for flow control part 143 controllable flow
Or disconnect, thus the liquid in controllable gauge line 141 flows in/out.As a kind of deformation, flow control part 143 omits.
Flow control part 143 preferably adopts electromagnetic valve, and electromagnetic valve is side-by-side, can form electromagnetic valve array.Flow control part 143 and control module
18 electric connections, control module 18 passes through to control unlatching and the closure of flow control part 143, thus controlling flow control part 143 place pipeline
The circulation of liquid or disconnection.When all flow control parts 143 all close, liquid circuit module 14 can form empty with respect to extraneous closing
Between.
Refer to Fig. 5, detection module 16 use light refraction principle in gauge line 141 measure liquid liquid level and/
Or the bubble in metering liquid is detected, detection module 16 includes the first detector 162 and the second detector 164, the first detection
Device 162 is arranged at the top of the second detector 164, and the first detector 162 and the second detector 164 are around outside gauge line 141
Side is arranged.First detector 162 and the second detector 164 are all electrically connected with control module 18 or independent of control module 18
Carry control function.Possess defoaming function photoelectric metering instrument 10 metering liquid volume when, need to first determine the body of required metering liquid
Long-pending, thus adjusting height at gauge line 141 for first detector 162, the height of the first detector 162 and liquid to be detected
The volume of body corresponds to；Then control module 18 controls power plant module 12 to produce negative pressure, and the liquid levels of volume to be detected rise, and arrive
Second detector 164 position liquid level continues to rise, and when liquid level reaches the first detector 162 position, control module 18 controls power
Module 12 is out of service, and now liquid level stops rising, you can obtain the liquid of respective volume.It is appreciated that the first detector 162
In the height of gauge line 141, user can manually adjust, and also (can be schemed not by control module 18 or a newly-increased travel mechanism
Depending on) need metering liquid long-pending control first detector 162 of metering mobile according to user.The light possessing defoaming function of the present invention
Electric gauge 10 is that the volume first determining and need to measuring liquid goes to measure again, is specifically as follows: after the volume of required liquid determines, because
The inside of gauge line 141 is hollow circuit cylinder, and diameter determines, can calculate the liquid level of required liquid, thus adjusting first
The position height of detector 162.
First detector 162 includes the first luminous organ 1622 and the first light-receiving device 1624, the first luminous organ 1622 and first
Light-receiving device 1624 is located at the relative both sides of gauge line 141 respectively, and the first luminous organ 1622 and the first light-receiving device 1624 are positioned at same
On individual horizontal plane.First luminous organ 1622 sends light, light transmission gauge line 141, and the center of circle through gauge line 141 section circle,
First light-receiving device 1624 can receive the light through gauge line 141.Second detector 164 and the first detector 164 construct identical,
Second detector 164 includes the second luminous organ 1642 and the second light-receiving device 1644, and the second detector 164 only position is than the first detection
Device 162 is low, and the second luminous organ 1642 of the second detector sends light, light transmission gauge line 141, also passes through 141 sections of gauge line
Received by the second light-receiving device 1644 behind the center of face circle, whether detection module 16 occurs in refraction detection gauge line 141 according to light
Bubble in liquid volume and/or liquid.
Refer to Fig. 6, the second luminous organ 1642 and the second light-receiving device 1644 are located at the relative both sides of gauge line 141, second
Line between luminous organ 1642 and the second light-receiving device 1644 is overlapped with gauge line 141 section diameter of a circle.When in gauge line 141
When not having liquid, the second luminous organ 1642 sends light and will not reflect through gauge line 141, and the second light-receiving device 1644 can receive
The partly light sending to the second luminous organ 1642.After liquid to be batched injects gauge line 141, liquid level rises to the second detector
When 164, the light that the second luminous organ 1642 sends, after gauge line 141 side wall, because measuring the highest liquid surface hollow of liquid, is passing through
Can reflect after metering liquid, dashed lines shown in (Fig. 6 upper dotted line), at this moment, the second light-receiving device 1644 connects refracted light
The light intensity coming from the second luminous organ 1644 receiving weakens significantly.If the metering liquid in gauge line 141 is further up, metering
The liquid level of liquid is more than the second detector 164, thus the light 1642 that now the second luminous organ 1641 sends will not reflect, thus
The light intensity that optical receiver receives is relatively stable, but, when having bubble in liquid to be batched (as shown in Fig. 7 lower dotted line),
The illumination that second luminous organ 1642 sends is mapped on bubble, and bubble surface can produce refraction to light, thus light was no longer along originally
Path advances into the second light-receiving device 1644, thus the light coming from the second luminous organ 1644 that the second light-receiving device 1644 detects
By force can be with respect to not having during bubble in liquid to be batched significantly to weaken.Both may determine that whether there is gas by detecting light intensity change
Bubble.When liquid level reaches the first detector 162, because liquid level concave downward, therefore, the light that the first luminous organ 1621 sends occurs
Reflect and the light intensity that the first light-receiving device 1622 receives substantially is weakened, this light intensity variable signal can stop as control metering liquid
Only enter the control signal of gauge line 141.It is appreciated that detection module 16 may include one or more groups of detectors, that is, detect mould
Block includes one, two or more luminous organs, one, two or more light-receiving devices, and luminous organ and light-receiving device quantity are equal.
When using, control module 18 controls the flow control part 143 being connected with metering liquid import 1421 to open, and goes out with metering liquid
The flow control parts 143 of mouthfuls 1422 connections, the flow control part 143 being connected with cleanout fluid import 1423 and being connected with rinse liquid outlet 1424
Flow control part 143 closes, and the second detector 164 runs, and the second luminous organ 1642 sends light, the second light-receiving device 1644 receiving light, control
Molding block 18 records light intensity i1 that the second light-receiving device 1644 receives, and this light intensity i1 can possess the photoelectric metering of defoaming function
Instrument 10 executes during detecting metering liquid every time, and as a kind of deformation, light intensity i1 can be with record storage, in detection metering next time
This parameter is directly transferred, certainly, the photoelectric metering instrument 10 possessing defoaming function can also be periodically to this ginseng during liquid
Number is corrected.Control module 18 controls power plant module 12 to run, and power plant module 12 makes to produce negative pressure in gauge line 141, thus
Metering liquid is made to be inhaled in gauge line 141, that is, metering liquor stream enters through connectedness 142 and enters flow control part after metering liquid import 1421
143 enter back into gauge line 141, and metering liquid simultaneously continues to rise in gauge line 141, when liquid level is through the second detector 164, the
Light intensity i2 that two light-receiving devices 1644 receive substantially weakens, and light intensity i2 is less than light intensity i1, and control module 18 detects and records to be worked as
Lower moment t, simultaneously the first detector 162 bring into operation, the first luminous organ 1622 sends light, the first light-receiving device 1624 receiving light,
Control module 18 records light intensity i3 that the first light-receiving device 1624 receives, and liquid level continues to rise, and after moment t, the second light-receiving device receives
Light intensity i4 arriving is stable, no longer changes, if control module 18 detects what the second light-receiving device 1644 received after moment t
Light intensity i5 weakens than light intensity i4, and control module 18 then thinks bubble, thus the control that closure is connected with metering liquid import 1421
Stream part 143, liquid to be batched can not flow to gauge line 141, and power plant module 12 no longer produces negative pressure simultaneously, but produces malleation,
Pressure is gradually increased to 12kpa-20kpa, and continues the 3-10 second, due to the metering flow control part 143 that is connected of liquid import 1421
Closure, liquid is under pressure and can not return, and liquid level can not decline, and in metering liquid, bubble density is lighter, bubble under pressure
Rupture, the bubble in liquid is forced out liquid and removes, and does not then have bubble in liquid, and after bubble eliminates, power plant module 12 produces negative
Pressure, the flow control part 143 being simultaneously connected with metering liquid import 1421 is opened, and the liquid levels in gauge line 141 continue to rise, if
Control module 12 is detected by the second detector 164 bubble in liquid, repeat aforesaid operations, until liquid level reaches the first inspection
Survey the position of device 162, the first light-receiving device 1624 detects light intensity i6 to be weakened, that is, i6 is less than i3, power plant module 12 is out of service, with
When close with the metering flow control part 143 that is connected of liquid import 1421, now can get accurate liquid volume.Control module 18 can
Control the flow control part 143 being connected with metering liquid outlet 1422 to open further, make metering liquid from metering liquid outlet 1422 discharge.Meter
After amount liquid is drained, during in order to avoid measuring other kinds of liquid, between metering liquid, produce cross-contamination, therefore need to be to connectedness
142 and/or gauge line 141 be carried out.Control module 18 controls the flow control part 143 being connected with metering liquid import 1421, with meter
The flow control part 143 of amount liquid outlet 1422 connection and the flow control part 143 being connected with rinse liquid outlet 1424 are closed, with cleanout fluid import
The flow control part 143 of 1423 connections is opened, and cleanout fluid is entered in connectedness 142 by cleanout fluid import 1423 and is carried out, and works as meter
When cleanout fluid liquid level in buret 141 is higher than the liquid level of photoelectric metering instrument 10 metering metering liquid possessing defoaming function, beat
Opening the flow control part 143 being connected with rinse liquid outlet 1424 makes cleanout fluid flow out.As a kind of deformation, during cleaning, control module 18
Control the flow control part 143 being connected with cleanout fluid import 1423 and the flow control part 143 being connected with rinse liquid outlet 1424 to open simultaneously
It is carried out.Metering liquid import 1421, metering liquid outlet 1422, cleanout fluid import 1423, rinse liquid outlet 1424 is non-cross,
Its shared connectedness 142, can be carried out to connectedness and/or gauge line 141, eliminate cross-contamination, therefore, the present invention possesses
The photoelectric metering instrument 10 of defoaming function is widely portable to the industries such as medical treatment, water quality detection.Cleanout fluid feed speed can be according to need
To be controlled by the size that power plant module 12 produces negative pressure, or external instrument produces pressure, coutroi velocity as needed to cleanout fluid.
As a kind of deformation, possessing detection module 16 and connectedness 142 of the photoelectric metering instrument 10 of defoaming function etc. can save
Slightly, the photoelectric metering instrument 10 that this possesses defoaming function includes control module 18, power plant module 12 and gauge line 141, power plant module
12 and control module 18 be electrically connected with, power plant module 12 and gauge line 141 connect, and contain liquid, control module in gauge line 141
18 control power plant modules 12 produce negative pressure makes liquid enter in gauge line 141, and power plant module 12 produces the gas in positive pressure handle liquid
Bubble extrudes liquid.
As a kind of deformation, power plant module 12 produces negative pressure makes the liquid level that liquid enters needed for reaching in gauge line 141 high
After degree, the bubble that power plant module 12 just produces in positive pressure handle liquid extrudes liquid.Liquid enters needed for reaching in gauge line 141
Liquid level, that is, liquid rise in gauge line 141, liquid level reaches the height of the first detector 162.
As a kind of deformation, possess defoaming function photoelectric metering instrument 10 metering liquid volume when, power plant module 12 produces
Alternate negative pressure and malleation, that is, power plant module 12 so that the liquid in gauge line 141 is increased, and 12 gauge lines 141 of power plant module
In liquid in bubble extrude liquid alternately.
Refer to Fig. 7, the present invention also provides a kind of metering method, the bubble in liquid can be eliminated, be divided into following
Step:
Step s1 a: gauge line is provided.
Step s2: negative pressure is applied to gauge line, makes liquid suck in gauge line；
Step s3: malleation is applied to gauge line, makes the bubble in liquid to be batched in gauge line extrude liquid；
Step s4: continue to apply negative pressure to gauge line, make liquid to be batched continue suction gauge line and treat in gauge line
Metering liquid rises to required liquid level.
As one kind preferably, the pressure applying malleation is 10kpa-20kpa.
Preferably, the internal diameter of gauge line is preferably 0.6cm-1.5cm, more preferably 0.7cm- between 0.5cm-2.5cm
1.2cm, most preferably 0.8cm, 0.9cm.
Preferably, the speed that liquid enters gauge line is 2cm each second3-4cm3.
As a kind of deformation, alternately or step s3 executes after step s4 for described step s2 and step s3.
As a kind of deformation, the liquid in gauge line in step s2 can be made to hold again after directly rising to required liquid level
Row step s3.
Refer to Fig. 8, as a kind of deformation, step s3 specifically includes step s31-s33:
Step s31: whether have bubble in the refraction principle detection liquid used up, have bubble then to carry out step s32, bubble-free
Then carry out step s33；
Step s32: malleation is applied to gauge line, makes the bubble in liquid to be batched in gauge line extrude liquid；
Step s33: detect whether liquid reaches required liquid level with anaclasis principle, reach required liquid level high
Degree then carries out step s4, and not up to required liquid level then carries out step s2.
Compared with prior art, the photoelectric metering instrument possessing defoaming function of the present invention includes control module and power mould
Block, power plant module and control module are electrically connected with, and power plant module can produce the bubble that malleation removes in gauge line, removes bubble removing
Simple and convenient, the persistent ailment that when eliminating metering liquid volume, bubble exists, make metering more accurate, improve accurate measurement rate, and
Control module realizes Automated condtrol, decreases the use of manpower, saves the cost of detection liquid volume.
The control module of the present invention controls the negative pressure of power plant module generation and malleation to be alternately produced, and that is, power plant module makes metering
Liquid in pipe rises, and power plant module extrudes liquid alternately the bubble in the liquid in gauge line, can be liquid
In bubble remove more thorough, make detection liquid volume more accurate.
The present invention includes flow control part, and flow control part can control the liquid in gauge line to flow in/out, that is, control liquid energy
No flow to gauge line or can flow out from gauge line it is achieved that controlling circulation or the disconnection of liquid, and flow control part and control
Molding block connects, and can automatically control liquid communication or disconnection, increased the efficiency of detection liquid volume.
Luminous organ of the present invention sends the center that light passes through the section of gauge line, and light will not reflect, and light-receiving device position holds
Easily determine, luminous organ is installed and light-receiving device is more convenient.Liquid enters light in gauge line and reflects, with the refraction principle of light,
Whether refraction detection liquid volume is occurred according to light, does not use mechanical detection, machinery repeatability will not be produced, accuracy of detection is more
Height, and do not affected by the turbidity of metering liquid and colourity when detecting.
, in 0.5cm-2.5cm, liquid liquid level in gauge line is concave for the metering bore of the present invention, and the liquid level of depression makes
Light therethrough can reflect, so that simpler with light detection liquid volume.
The malleation that the power plant module of the present invention produces is 12kpa-20kpa, and moderate pressure can be complete the bubble in liquid
Remove, and the pressure suffered by gauge line will not be excessive, increase the service life of gauge line, the negative pressure that power plant module produces is
42kpa-49kpa, can make the liquid rate of climb moderate, and liquid rises will not be too fast, makes accuracy of detection higher, and liquid rises
Will not be excessively slow, detection efficiency improves.
Compared with prior art, the metering method of the present invention, method is simple, and there is bubble when eliminating metering liquid volume
Persistent ailment., in 0.5cm-2.5cm, liquid liquid level in gauge line is concave for metering bore, and the liquid level of depression makes therethrough
Light can reflect, so that simpler with light detection liquid volume.The pressure of malleation is 12kpa-20kpa, and pressure is fitted
In, the bubble in liquid can be removed completely, and the pressure suffered by gauge line will not be excessive, increase the service life of gauge line.
The speed that liquid enters gauge line is 2cm each second3-4cm3, speed is moderate, and detection liquid volume is accurate and detection efficiency is high.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all former in the present invention
Any modification made within then, equivalent and improvement etc. all should comprise within protection scope of the present invention.
Claims (10)
1. a kind of photoelectric metering instrument possessing defoaming function, for metering liquid volume it is characterised in that: this possesses defoaming function
Photoelectric metering instrument include control module, power plant module and gauge line, power plant module and control module are electrically connected with, power plant module
Connect with gauge line, described control module controls power plant module to produce positive/negative-pressure, when described control module controls power plant module to produce
Raw negative pressure, liquid to be batched is inhaled in gauge line, when described control module controls power plant module to produce malleation, treats in gauge line
Bubble in metering liquid is forced out liquid to be batched.
2. possess the photoelectric metering instrument of defoaming function as claimed in claim 1 it is characterised in that: described control module controls dynamic
Power module produces alternate positive/negative-pressure.
3. possess the photoelectric metering instrument of defoaming function as claimed in claim 1 it is characterised in that: described possess defoaming function
Photoelectric metering instrument also includes flow control part, and described flow control part and control module connect, and described flow control part is used for controlling in gauge line
Liquid flows in/out.
4. possess the photoelectric metering instrument of defoaming function as claimed in claim 1 it is characterised in that: described possess defoaming function
Photoelectric metering instrument includes detection module, and described detection module includes luminous organ and light-receiving device, and described luminous organ and light-receiving device are respectively
Positioned at the both sides of described gauge line, described luminous organ sends light and passes through the center of circle of the section circle of gauge line to be received by light-receiving device, inspection
Survey whether module occurs to reflect the bubble in liquid volume and/or liquid in detection gauge line according to light.
5. possess the photoelectric metering instrument of defoaming function as claimed in claim 4 it is characterised in that: the liquid in described gauge line
When having bubble, illumination that described luminous organ sends reflects after being mapped on bubble, and what described light-receiving device received come from
The light intensity of light device diminishes.
6. possess the photoelectric metering instrument of defoaming function as claimed in claim 4 it is characterised in that: described metering bore exist
0.5cm-2.5cm, the illumination that described luminous organ sends is mapped to and reflects at highest liquid level, and what described light-receiving device received is derived from
In luminous organ light intensity diminish.
7. the photoelectric metering instrument possessing defoaming function as described in any one of claim 1-6 it is characterised in that: described power mould
The pressure of the malleation that block produces is 10kpa-20kpa, and the pressure of the negative pressure that described power plant module produces is 10kpa-30kpa.
8. a kind of metering method is it is characterised in that comprise the following steps: provides a gauge line；Negative pressure is applied to gauge line, makes liquid
Body sucks in gauge line；Malleation is applied to gauge line, makes the bubble in liquid to be batched in gauge line extrude liquid；Continue to meter
Buret applies negative pressure, makes liquid to be batched continue to suck the liquid level needed for gauge line liquid to be batched in gauge line rises to
Highly.
9. metering method as claimed in claim 8 it is characterised in that: to gauge line apply negative pressure, make liquid suck gauge line
In, and malleation is applied to gauge line, make the bubble in liquid to be batched in gauge line extrude liquid alternately；Or first carry out
Negative pressure is applied to gauge line, makes liquid to be batched continue to suck needed for gauge line liquid to be batched in gauge line rises to
Liquid level, then execute to gauge line applying malleation, make the bubble in liquid to be batched in gauge line extrude liquid.
10. metering method as claimed in claim 8 it is characterised in that: the pressure of described malleation be 10kpa-20kpa, described
The internal diameter of gauge line is 0.5cm-2.5cm, and the speed that described liquid enters gauge line is 2cm each second3-4cm3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610712640.4A CN106370261A (en) | 2016-08-24 | 2016-08-24 | Photoelectric meter with defoaming function and metering method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610712640.4A CN106370261A (en) | 2016-08-24 | 2016-08-24 | Photoelectric meter with defoaming function and metering method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610712640.4A Pending CN106370261A (en) | 2016-08-24 | 2016-08-24 | Photoelectric meter with defoaming function and metering method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109669027A (en) * | 2017-10-17 | 2019-04-23 | 中国石油天然气股份有限公司 | Detection device and detection method for vacuum anti-foaming performance of transformer oil |
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