CN109211926A - A kind of detection device and its method of laser two-way hollow fiber film assembly integrality - Google Patents
A kind of detection device and its method of laser two-way hollow fiber film assembly integrality Download PDFInfo
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- CN109211926A CN109211926A CN201811245558.0A CN201811245558A CN109211926A CN 109211926 A CN109211926 A CN 109211926A CN 201811245558 A CN201811245558 A CN 201811245558A CN 109211926 A CN109211926 A CN 109211926A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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Abstract
本发明公开了一种激光双路中空纤维膜组件完整性的检测装置，包括遮光外壳，进水口和出水口，有一遮光隔板将遮光外壳分为两个腔室，遮光外壳内自进水口至出水口连接有穿过遮光隔板的光学检测管；每个腔室内均设有一个光学检测器；两个光学检测器采用上下双向设置的激光发射器，可以对检测管上下两侧同时进行检测。通过微气泡和颗粒物碰撞穿过激光束引起光强的减小导致电压脉冲信号的下降来判定膜的完整性。同时双检测光路可避免检测过程中气泡粘附于检测管路上部或移动较慢引起检测精度下降的问题，检测装置可直接安装于膜组件出水管的简化设计，可有效节省系统安装空间。在膜过滤过程中实现了对膜组件完整性的方便快捷、实时在线、连续性的检测。
The invention discloses a detection device for the integrity of a laser dual-channel hollow fiber membrane module, which comprises a light-shielding casing, a water inlet and a water outlet, and a light-shielding partition divides the light-shielding casing into two chambers. The water outlet is connected with an optical detection tube that passes through the light-shielding baffle; each chamber is provided with an optical detector; the two optical detectors use laser emitters set up and down in both directions, which can detect the upper and lower sides of the detection tube at the same time. . The integrity of the membrane is judged by the drop in the voltage pulse signal caused by the reduction of light intensity caused by the collision of microbubbles and particles passing through the laser beam. At the same time, the double detection optical path can avoid the problem that the air bubbles stick to the upper part of the detection pipeline or move slowly during the detection process, which will cause the detection accuracy to drop. In the process of membrane filtration, convenient, fast, real-time online and continuous detection of the integrity of the membrane module is realized.
Description
Technical field
The present invention relates to a kind of on-line detecting systems of membrane filtration processes hollow fiber film assembly integrality.
Background technique
Membrane Separation for Water Treatment has stable water outlet, and operating pressure is low, and occupied area is small, and medicine consumption is few, is not likely to produce secondary
The advantages that pollution, is widely used in drinking water treatment, Treated sewage reusing, the fields such as sea water desalination.Hollow-fibre membrane is the current world
Surpass/micro-filter technology leading technology form in film field.But particle or sharp object and film surface friction, water in practical engineering applications
Stream percussion, membrane material aging etc. can all cause the breakage of membrane module, and module integrity of membrane, which is once destroyed, will cause seriously
Consequence, the larger molecular organics in raw water, colloid, bacterium, the microorganisms such as virus will enter water outlet side by damage location,
It influences effluent quality and threat is brought to human health.According to data, using organic film hollow fibre membrane systems, year fracture of wire (breakage)
Rate is more than 2-4 ‰, once film integrality is destroyed, water quality safety is by risk.Therefore quick, accurate, sensitive, company is developed
Continuous, easy film integrality online test method, has become the major issue of current precision application membrane technology.
Summary of the invention
For the prior art, the present invention provides on-line measuring device and its detection of a kind of hollow fiber film assembly integrality
Method detects quick, sensitive, easy to operate.Maximum simplify that detection device is realized is designed, and system peace can be effectively saved
ETL estimated time of loading.
In order to solve the above technical problems, the present invention proposes a kind of inspection of laser two-way hollow fiber film assembly integrality
Device, including shading shell are surveyed, the side of the shading shell is provided with water inlet, and opposite side is equipped with water outlet, described
One piece of shade curtain is equipped in shading shell and between the water inlet and the water outlet, thus by the shading shell
It is divided into two chambers, the first fluorescence detector and the second fluorescence detector is respectively equipped in two chambers；In the shading shell
The optical detection pipe across shade curtain is connected with from water inlet to water outlet；First fluorescence detector includes being arranged in institute
State the first laser transmitter and the first signal receiver on shading outer casing inner wall, first laser transmitter position and the first letter
Number receiver is located at the corresponding two sides of the optical detection pipe and position to just；Second fluorescence detector includes that setting exists
Second laser transmitter and second signal receiver on the shading outer casing inner wall, the second laser transmitter are located at described
On the opposite inner wall of first laser transmitter, the second signal receiver is located at the opposite inner wall of first signal receiver
On, the second signal receiver and the second laser emitter position are to just；First signal receiver includes from straight
Galvanic electricity source is and described to ground connection the first fixed resistance R11, the first variable resistance R12 and the first photo resistance RG1 that are sequentially connected in series
First fixed resistance R11 is parallel with first capacitor C1；The second signal receiver includes extremely being grounded successively from DC power supply DC
Concatenated second fixed resistance R21, the second adjustable resistance R22 and the second photo resistance RG2, with the second fixed resistance R21
It is parallel with the second capacitor C2；The first fixed resistance R11 and the second fixed resistance R21 are connected in parallel to an alarm indication system
System；The alarm display system include one for display system normal condition the first indicator light, one for showing that film is broken
Second indicator light of damage state, a buzzer H, simultaneously with the first fixed resistance R11 and the second fixed resistance R21
Liquid crystal display PLC in parallel.
In the present invention, the first laser transmitter and second laser transmitter are all made of 650nm red laser transmitter；
The vertical range of the first laser transmitter and second laser transmitter and the optical detection pipe is X, and 4cm≤X≤
The section of the Laser emission optical path of 10cm, the first laser transmitter and second laser transmitter be long axis be a, short axle is
The ellipse of b, the width of the optical detection pipe are c, a length of d, wherein a >=(1/2) c, and emit the section of optical path positioned at described
The location mid-shaft of optical detection pipe；The first laser transmitter and the second laser transmitter are located at the optics and examine
At test tube (1/2) d ± (1/4) d, d >=25b；Wherein, 0.5cm≤c≤2cm, 8cm≤d.
In the present invention, the optical detection pipe is horizontal positioned.The shading shell and shade curtain, which are all made of black, to be had
Machine glass material, the optical detection pipe is single cuboid detection pipe, and uses transparent organic glass material.
Using the detection device of laser two-way hollow fiber film assembly integrality of the present invention, detecting step is as follows:
Firstly, the detection device of laser two-way hollow fiber film assembly integrality of the present invention is mounted on doughnut
Membrane module water outlet；Then, starter, DC power supply DC provide voltage, and the first indicator light is bright, by adjusting second laser
The adjusting knob of transmitter and the adjusting knob of first laser transmitter change the first variable resistance R12 and second respectively can power transformation
The resistance value for hindering R22 stablizes voltage value within the scope of one, is shown as line pattern on liquid crystal display PLC；When film filters out
There are bubble and particulate matter to enter into and through the optical detection pipe by water inlet in waterpipe, so that second laser transmitter and
The laser beam that one laser emitter issues is blocked, and is irradiated to the light intensity drop of the first signal receiver and second signal receiver
Low, at the same time, the resistance value of the first photo resistance RG1 and the second photo resistance RG2 increase, first fixed resistance
The partial pressure of R11 and the second fixed resistance R21 reduce, and form voltage falling pulse and are shown on liquid crystal display PLC；At this point,
Buzzer H in alarm display system issues the sound, for prompting the second indicator light of film breakage to brighten.
Compared with prior art, the beneficial effects of the present invention are:
The present invention has carried out simplified design to detection device, can save part installation space, detection device is using double up and down
To the laser emitter of setting, using in osmotic flow when film breakage microbubble and particulate matter as test object, pass through microbubble
It collides the reduction for causing across laser beam light intensity with particulate matter, determines the complete of film so as to cause voltage pulse signal decline
Property.By the way that the microbubble and particulate matter double check in osmotic flow, there is higher detection sensitivity and detection accuracy.Together
When double light path can avoid in detection process bubble adhesion and cause detection accuracy to decline more slowly in signal piping top or movement
The problem of, it monitors the device whether normal operation, the real-time online to module integrity of membrane is realized in membrane filtration processes, is connected
The detection of continuous property.
In addition, it is out-of-date to flow through in water, the bubble meeting of generation using horizontal positioned sense channel in detection device of the present invention
As buoyancy rises to sense channel top, the probability for detecting bubble is increased, improves the sensitivity of detection.Water is logical
When crossing optical detection pipe, the particle of a part infiltration can fall to the lower part of optical detection pipe due to gravity, swash due to second
Optical transmitting set is mounted on the lower section of optical detection pipe, and after particle decline, which is able to detect that more particles are logical
It crosses, signal value variation is also more obvious, to further improve the sensitivity of detection.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of detection device of the present invention；
Fig. 2 is the left cross-sectional view of detection device shown in Fig. 1；
Fig. 3 is the circuit diagram of detection device of the present invention.
In figure: 1- shading shell, 2- water inlet, 3- water outlet, the first signal receiver of 4-, 5- second laser transmitter,
6- second signal receiver, 7- barn door, 8- second laser transmitter, 9- optical detection pipe, 10- alarm device control panel, 11-
Second laser transmitter adjusting knob, 12- first laser transmitter adjusting knob, 13- liquid crystal display PLC, 14- alarm device,
The normal indicator light of 15- system, 16- film breakage indicator light, DC- voltage source, the first fixed resistance of R11-, the fixed electricity of R21- second
Resistance, the first variable resistance of R12-, the first photo resistance of RG1-, R22- the second adjustable resistance, the second photo resistance of RG2-, GND- connect
Ground, C1- first capacitor, the second capacitor of C2-, LED- light emitting diode, H- buzzer.
Specific embodiment
Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific
Embodiment is only explained the present invention, is not intended to limit the invention.
The detection device of a kind of laser two-way hollow fiber film assembly integrality proposed by the present invention, such as Fig. 1 and Fig. 2 institute
Show, including shading shell 1, the side of the shading shell 1 is provided with water inlet 2, on the shading shell 1 with the water inlet
2 opposite sides are equipped with water outlet 3.One is equipped in the shading shell 1 and between the water inlet 2 and the water outlet 3
Block shade curtain 7, to the shading shell 1 be divided for two chambers, from water inlet 2 to water outlet 3 in the shading shell 1
It is connected with the optical detection pipe 9 across shade curtain 7.The shading shell 1 uses black acrylic material, outside the shading
Shell 1 primarily serves the effect for avoiding external light source interference pair, and the shading shell 1 is bonded, and the shade curtain 7 also uses
Black acrylic material prevents from generating interference between two detectors.The optical detection pipe 9 is the detection of single cuboid
Pipe, and use transparent organic glass material.
The first fluorescence detector, institute are equipped on the shading shell 1 between the shade curtain 7 and the water inlet 2
It states and is equipped with the second fluorescence detector on shading shell 1 between the shade curtain 7 and the water outlet 3.First optics
Detector includes the first laser transmitter 8 and the first signal receiver 4 being arranged on 1 inner wall of shading shell, and described
One laser emitter 8 is located at the side of the optical detection pipe 9, and first signal receiver 4 is located at the optical detection pipe 9
The other side and with 8 position of first laser transmitter to just.Second fluorescence detector includes being arranged in the shading
Second laser transmitter 5 and second signal receiver 6 on 1 inner wall of shell, the second laser transmitter 5 are located at described first
On the opposite inner wall of laser emitter 8, the second signal receiver 6 is located at the opposite inner wall of first signal receiver 4
On, the second signal receiver 6 is with 5 position of second laser transmitter to just.
As shown in figure 3, first signal receiver 4 includes the first fixed electricity being sequentially connected in series from DC power supply to ground connection
R11, the first variable resistance R12 and the first photo resistance RG1 are hindered, is parallel with first capacitor C1 with the first fixed resistance R11,
Play filter action；The second signal receiver 6 includes the second fixed resistance being sequentially connected in series from DC power supply DC to ground connection
R21, the second adjustable resistance R22 and the second photo resistance RG2 are parallel with the second capacitor C2 with the second fixed resistance R21,
In the second capacitor C2 equally play filter action.
The first laser transmitter 8 and the second laser transmitter 5 are connected to DC power supply DC；Described first swashs
Optical transmitting set 8 and second laser transmitter 5 have adjusting knob.
The first fixed resistance R11 and the second fixed resistance R21 are connected in parallel to an alarm display system.
The alarm display system includes the first indicator light 15, one for being used for display system normal condition for showing
Show 16, buzzer H of the second indicator light of film breakage state while consolidating with the first fixed resistance R11 and described second
Determine the liquid crystal display PLC13 of resistance R21 parallel connection, first indicator light 15 is connected with DC power supply DC, second instruction
It is that the liquid crystal display PLC13 is in parallel after lamp 16 and buzzer H series connection.It is shown on liquid crystal display PLC 13 double
Detection waveform, as long as two groups of fluorescence detectors wherein detect that the variation of signal can cause police instruction for one group.
In the present invention, the first laser transmitter 8 and second laser transmitter 5 are all made of the transmitting of 650nm red laser
Device；The vertical range of the first laser transmitter 8 and second laser transmitter 5 and the optical detection pipe 9 is X, and 4cm≤
The section of the Laser emission optical path of X≤10cm, the first laser transmitter 8 and second laser transmitter 5 be long axis be a,
Short axle is the ellipse of b, and the width of the optical detection pipe 9 is c, a length of d, for different water detection pipe alterable heights, wherein
A >=(1/2) c, and the section for emitting optical path is located at the location mid-shaft of the optical detection pipe 9；The first laser transmitter 8 with
The second laser transmitter 5 is located at (1/2) d ± (1/4) d of the optical detection pipe 9, d >=25b；Wherein,
0.5cm≤c≤2cm, 8cm≤d.
In the present invention, the laser emitter of upper and lower two-way setting is respectively adopted in the first, second two fluorescence detectors,
Two sides above and below detection pipe can be detected simultaneously.
The optical detection pipe 9 be it is horizontal positioned, can directly will test device and be installed on membrane module water outlet position.
Detection device of the present invention, which realizes, largely to be simplified, and system installation space is effectively saved, and can be mounted directly
On membrane module outlet pipeline.
The step of being detected using the detection device of laser two-way hollow fiber film assembly integrality of the present invention
It is as follows:
The detection device of laser two-way hollow fiber film assembly integrality of the present invention is mounted on hollow-fibre membrane
Component water outlet；Starter, DC power supply DC provide voltage, and the first indicator light 15 is bright, and when system normal operation, first refers to
It is bright to show that lamp 15 can keep growing.
Changed respectively by the adjusting knob 12 of the adjusting knob 11 and first laser transmitter that adjust second laser transmitter
The resistance value for becoming the first variable resistance R12 and the second adjustable resistance R22 makes voltage value stablize the liquid crystal display within the scope of one
Line pattern is shown as on PLC.
If particulate matter enters optics inspection across hollow fiber film assembly in hollow fiber film assembly breakage, bubble or water
After surveying device, the characterization voltage of feedback is reduced, and light emitting diode and buzzer issue alarm；Conversely, if hollow fiber film assembly is complete
It is whole, the voltage stabilization of feedback.
When thering is bubble and particulate matter to enter into and through the optical detection pipe 9 by water inlet 2 in film filtration effluent pipeline, make
It obtains the laser beam that second laser transmitter 5 and first laser transmitter 8 issue to be blocked, is irradiated to the first signal receiver 4
It is reduced with the light intensity of second signal receiver 6, at the same time, the electricity of the first photo resistance RG1 and the second photo resistance RG2
Resistance value increases, and the partial pressure of the first fixed resistance R11 and the second fixed resistance R21 reduce, and forms voltage falling pulse and shows
It is shown on liquid crystal display PLC13, passes through 13 real-time display two-way voltage oscillogram of liquid crystal display interwined dragon city.Work as voltage pulse
Lower than setting threshold value when, for prompting the second indicator light 16 of film breakage that can start to flash, alarm device 14 be buzzer H issue
Alarm voltage threshold and alarm song is adjusted by the alarm device control panel 10 being arranged on shading shell 1 in alarm sound
Sound size.
The present invention is based on photoelectric conversion using the features such as laser direction is good, brightness is high, monochromaticjty is strong and high-energy density
Technology realizes the on-line checking of doughnut film integrality, and detection pipe is using horizontal positioned mode；Systematic selection Double passage laser is same
When detect；First laser transmitter 8 is set to 1 top of shading shell, and second laser receiver 5 is set to 1 lower part of shading shell,
Two laser emitters are parallel and all perpendicular to detection pipe, and the laser beam center emitted is radiated at the center line of detection pipe
On, and received by corresponding first laser receiver 4 and second laser receiver 6, it realizes to detection pipe inside prepare liquid
Vertical cross-section covering detection, while the present invention simplifies detection device in the case where guaranteeing detection accuracy.Two sides screw thread
Interface design is convenient to be connect with pipeline.
Although above in conjunction with attached drawing, invention has been described, and the invention is not limited to above-mentioned specific implementations
Mode, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art are at this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to of the invention
Within protection.
Claims (5)
1. a kind of detection device of laser two-way hollow fiber film assembly integrality, including shading shell (1), the shading shell
(1) side is provided with water inlet (2), and opposite side is equipped with water outlet (3), which is characterized in that
One piece of shade curtain is equipped in the shading shell (1) and between the water inlet (2) and the water outlet (3)
(7), so that the shading shell (1) is divided into two chambers, the first fluorescence detector and second are respectively equipped in two chambers
Fluorescence detector；The optics across shade curtain (7) is connected with from water inlet (2) to water outlet (3) in the shading shell (1)
Detection pipe (9)；
First fluorescence detector includes that first laser transmitter (8) on shading shell (1) inner wall and the is arranged
One signal receiver (4), first laser transmitter (8) position and the first signal receiver (4) are located at the optical detection pipe
(9) corresponding two sides and position is to just；
Second fluorescence detector includes that second laser transmitter (5) on shading shell (1) inner wall and the is arranged
Binary signal receiver (6), the second laser transmitter (5) are located on the opposite inner wall of the first laser transmitter (8), institute
It states second signal receiver (6) to be located on the opposite inner wall of first signal receiver (4), the second signal receiver
(6) with second laser transmitter (5) position to just；
First signal receiver (4) includes the first fixed resistance R11 being sequentially connected in series from DC power supply to ground connection, first can
Power transformation hinders R12 and the first photo resistance RG1, is parallel with first capacitor C1 with the first fixed resistance R11；
The second signal receiver (6) includes the second fixed resistance R21 being sequentially connected in series from DC power supply DC to ground connection, second
Variable resistance R22 and the second photo resistance RG2 is parallel with the second capacitor C2 with the second fixed resistance R21；
The first fixed resistance R11 and the second fixed resistance R21 are connected in parallel to an alarm display system；
The alarm display system include one for display system normal condition the first indicator light (15), one for showing
The second indicator light (16) of film breakage state, a buzzer H, simultaneously with the first fixed resistance R11 and described second solid
Determine the liquid crystal display PLC (13) of resistance R21 parallel connection.
2. the detection device of laser two-way hollow fiber film assembly integrality according to claim 1, which is characterized in that described
First laser transmitter (8) and second laser transmitter (5) are all made of 650nm red laser transmitter；The first laser hair
The vertical range of emitter (8) and second laser transmitter (5) and the optical detection pipe (9) is X, 4cm≤X≤10cm, institute
State the Laser emission optical path of first laser transmitter (8) and second laser transmitter (5) section be long axis be a, short axle b
Ellipse, the width of the optical detection pipe (9) is c, a length of d, wherein a >=(1/2) c, and the section for emitting optical path is located at institute
State the location mid-shaft of optical detection pipe (9)；The first laser transmitter (8) and the second laser transmitter (5) difference position
At optical detection pipe (9) (1/2) d ± (1/4) d, d >=25b；Wherein, 0.5cm≤c≤2cm, 8cm≤d.
3. the detection device of laser two-way hollow fiber film assembly integrality according to claim 1, which is characterized in that described
Optical detection pipe (9) is horizontal positioned.
4. the detection device of laser two-way hollow fiber film assembly integrality according to claim 1, which is characterized in that described
Shading shell (1) and shade curtain (7) are all made of black acrylic material；The optical detection pipe (9) is single cuboid
Detection pipe, and use transparent organic glass material.
5. a kind of detection method of laser two-way hollow fiber film assembly integrality, which is characterized in that using as claim 1 to
The detection device of any laser two-way hollow fiber film assembly integrality, detecting step are as follows in 4:
The detection device of the laser two-way hollow fiber film assembly integrality any in Claims 1-4 is mounted on hollow
Fiber film component water outlet；Starter, DC power supply DC provide voltage, and the first indicator light (15) is bright, by adjusting second
The adjusting knob (11) of laser emitter and the adjusting knob (12) of first laser transmitter change the first variable resistance R12 respectively
With the resistance value of the second adjustable resistance R22, stablizes voltage value within the scope of one, be shown as rectilinear on liquid crystal display PLC
Shape；
When thering is bubble and particulate matter to enter into and through the optical detection pipe (9) by water inlet (2) in film filtration effluent pipeline, make
The laser beam for obtaining second laser transmitter (5) and first laser transmitter (8) sending is blocked, and is irradiated to the reception of the first signal
The light intensity of device (4) and second signal receiver (6) reduces, at the same time, the first photo resistance RG1 and the second photo resistance
The resistance value of RG2 increases, and the partial pressure of the first fixed resistance R11 and the second fixed resistance R21 reduce, and forms voltage and declines arteries and veins
It rushes and is shown on liquid crystal display PLC；At this point, the buzzer H in alarm display system issues the sound, for prompting film damaged
The second indicator light (16) brighten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245558.0A CN109211926A (en) | 2018-10-25 | 2018-10-25 | A kind of detection device and its method of laser two-way hollow fiber film assembly integrality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245558.0A CN109211926A (en) | 2018-10-25 | 2018-10-25 | A kind of detection device and its method of laser two-way hollow fiber film assembly integrality |
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| CN116448757A (en) * | 2022-01-14 | 2023-07-18 | 西克Ivp股份公司 | Straw inspection |
| CN116942941A (en) * | 2023-09-14 | 2023-10-27 | 苏州森斯缔夫传感科技有限公司 | Light intensity comparison sensor and light intensity comparison method |
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Application publication date: 20190115 |
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