CN109085236B - Method for detecting bubble content in defoaming process of resin and curing agent by using ultrasonic waves - Google Patents
Method for detecting bubble content in defoaming process of resin and curing agent by using ultrasonic waves Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/024—Mixtures
- G01N2291/02433—Gases in liquids, e.g. bubbles, foams
Abstract
The invention discloses a method for detecting bubble content in a defoaming process of resin and curing agent by using ultrasonic waves, which comprises the steps of firstly detecting the bubble content of purified water in a static state by using an ultrasonic device, and determining an energy reference value by taking an energy value I captured by the ultrasonic device in the detection as a basis; and then detecting the bubble content in the defoaming process of the resin and/or the curing agent by using an ultrasonic device, comparing an energy value II captured by the ultrasonic device in the detection with an energy reference value, and judging that the bubble content in the resin and/or the curing agent reaches the standard when the energy value II is higher than the energy reference value and lasts for a preset time. The method can quickly and quantitatively reflect the content trend of the bubbles in the solution in the defoaming process of the resin and/or the curing agent, effectively avoid the defect that the wind power blade is whitened to form various grades due to bubble aggregation, and eliminate the hidden danger that the fan cannot normally operate or even the wind power blade is scrapped due to the defects.
Description
Technical Field
The invention relates to the technical field of wind power blade manufacturing, in particular to a method for detecting bubble content in a defoaming process of resin and curing agent by utilizing ultrasonic waves.
Background
The wind power blade is a thin-shell structure made of composite materials, structurally comprises a root part, a shell and a web plate, and is used for wind power generation. In order to obtain a stronger and more regular wind field environment, the installation of wind turbines has been shifted from land to sea at greater and greater distances from the coastline, and the shift places higher and higher requirements on the safety and reliability of wind power blades. In the large-scale manufacturing process of the wind power blade, the defect that the wind power blade is whitish to form various grades due to bubble aggregation often occurs, although the defects are maintained in a factory, hidden dangers of burying the defects can cause that a fan cannot normally operate and even the wind power blade is scrapped, and therefore huge maintenance cost or other economic losses are brought to a blade production factory and a host factory.
According to on-site investigation and analysis, one of the reasons for bubble aggregation in the production process of the wind power blade is that the main raw material epoxy resin and the curing agent thereof of the wind power blade or bubbles existing or generated in the mixing process of the epoxy resin and the curing agent thereof can be defoamed in the on-site production process, and whether bubbles exist is judged manually, but microbubbles in the mixed resin are difficult to identify visually. At present, the detection of the content of bubbles in matrix resin in the wind power blade industry is still in a blank stage, and after data is checked, a method for detecting bubbles by using ultrasonic waves is provided in the medical industry.
In the prior art, the patent application with the application number of CN201810083400.1 discloses an ultrasonic bubble detection method and system, which includes acquiring the bubble velocity and the maximum bubble volume threshold in a detection object; determining the interval time of detection nodes during bubble detection; at each detection node, the ultrasonic detection equipment transmits ultrasonic waves to a detection object, receives the ultrasonic waves reflected or transmitted by the detection object, and analyzes the received ultrasonic waves to judge whether the detection node detects bubbles; and counting the number of detection periods for continuously detecting the bubbles, and calculating the volume value of the bubbles according to the interval time of the detection nodes and the bubble speed. The invention patent application with the application number of CN201310020345.9 discloses a method for quantitatively analyzing the distribution of bubble defects in a casting blank. The method mainly includes the steps that slicing and sampling are conducted on a casting blank section, then bubble defects inside each slice are imaged through an X-ray diffractometer, and the size, the number and the distribution of the different bubble defects in a sliced sample are obtained; and finally obtaining the overall distribution rule of the size and the number of the bubble defects in the casting blank by summing up and counting the size and the position of the defects in the image. The above prior arts are not used for how to realize the rapid detection of the content of bubbles in the mixed resin on site in the wind turbine blade manufacturing process.
Disclosure of Invention
The invention provides a method for detecting bubble content in a defoaming process of resin and a curing agent by using ultrasonic waves, which can realize on-site rapid detection of the bubble content in a solution after the resin and the curing agent are mixed in a wind power blade manufacturing process.
The technical scheme of the invention is as follows: a method for detecting bubble content in the defoaming process of resin and curing agent by using ultrasonic waves comprises the steps of firstly detecting the bubble content of purified water in a static state by using an ultrasonic device, and determining an energy reference value according to an energy value I captured by the ultrasonic device in the detection; and then, detecting the bubble content of the resin and/or the curing agent in the defoaming process by using an ultrasonic device, comparing an energy value II captured by the ultrasonic device in the detection with an energy reference value to judge whether the bubble content of the resin and/or the curing agent reaches the standard, and judging that the bubble content of the resin and/or the curing agent reaches the standard when the energy value II is higher than the energy reference value and lasts for a preset time.
The method for detecting the bubble content in the defoaming process of the resin and the curing agent by using ultrasonic waves comprises the following steps of:
the method comprises the following steps: acquiring an energy reference value: preparing an ultrasonic detection system, wherein the ultrasonic detection system comprises an ultrasonic device and a control analysis module; detecting the bubble content of the purified water in a static state, obtaining an energy reference value, and storing the energy reference value in a control analysis module;
step two: detecting the bubble content of the resin and/or the curing agent, which specifically comprises the following steps:
s1: placing a probe: the probes are placed in resin and/or curing agent, so that the stable distance between the two probes is ensured and the probes do not shake in the detection process;
s2: ultrasonic detection: the resin and/or curing agent begin to be defoamed, the defoaming process comprises a stage I and
stage I, stage I is a stage in which the content of bubbles in the resin and/or the curing agent is gradually reduced,
the stage is that the content of air bubbles in the resin and/or the curing agent reaches the lowest value under the current air pumping state; meanwhile, starting an ultrasonic device to detect the bubble content of the resin and/or the curing agent in the defoaming process;
s3: collecting data: collecting data detected by the ultrasonic device through a data collection module: energy change data after attenuation of ultrasonic waves through resin and/or curing agent in stage I and
energy data reaching the peak period can be captured by the ultrasonic device in the stage;
s4: acquiring an ultrasonic detection energy map: the data collection module sends the collected data to the control analysis module, the control analysis module analyzes and processes the received data, and synchronously draws an ultrasonic detection energy curve graph in the defoaming process of the resin and/or the curing agent in real time and synchronously displays the ultrasonic detection energy curve graph in real time through the display module;
s5: observing an ultrasonic detection energy curve chart in the defoaming process of the resin and/or the curing agent
Step-in-step surpassAfter the energy value which can be captured by the sound wave device and reaches the peak period is in a certain numerical range and continues for a preset time, the defoaming of the resin and/or the curing agent is stopped, and the ultrasonic detection is stopped at the same time;
step three: and (3) comparison and judgment:
will be provided with
Comparing the energy value captured by the ultrasonic device with the energy reference value to judge whether the resin and/or the curing agent can be used for production, and if so, judging whether the resin and/or the curing agent can be used for production
When the energy value captured by the stage ultrasonic device is higher than the energy reference value, the resin and/or the curing agent can be used for production.
In the first step, when detecting the bubble content of the purified water in a static state, the probes are spaced at a predetermined distance, the maximum energy which can be captured by the ultrasonic device is 300000(mV ms)/S, and the energy reference value is determined to be 300000(mV ms)/S.
Installing a probe by adopting a tool; two probes of the ultrasonic device are respectively fixed on two sides of a tool, and the two probes are arranged oppositely.
The tool comprises a slide way assembly arranged on a device for containing resin and/or curing agent, a probe mounting seat arranged on the slide way assembly and a fixing piece arranged on the probe mounting seat, wherein the probe mounting seat can move along the slide way assembly and can be fixed on the slide way assembly through the fixing piece after being moved to a required position.
Detecting by adopting an ultrasonic detection system, wherein the ultrasonic detection system comprises an ultrasonic device, a data collection module, a display module, a storage module, a control analysis module and a tool for installing a probe; the ultrasonic device is connected with the data collection module, and the ultrasonic device, the data collection module, the display module and the storage module are all connected with the control analysis module; the ultrasonic device is used for transmitting and receiving ultrasonic waves; the data collection module is used for collecting data received by the ultrasonic device and transmitting the data to the control analysis module; the control analysis module is used for analyzing and processing the received data, drawing an energy curve graph to obtain a detection result, sending all the data to the storage module for storage, and sending the energy curve graph to the display module for display in real time; the storage module is used for storing all data, including an energy reference value, an energy value II and an energy curve graph; the display module is used for displaying the energy curve graph in real time and facilitating operation.
The ultrasonic device is an ultrasonic measuring instrument which comprises an ultrasonic generator, an ultrasonic transducer and an amplifying and filtering device.
A method for defoaming mixed liquid of resin and curing agent comprises the method for detecting the content of bubbles in the defoaming process of resin and curing agent by using ultrasonic waves; the bubble content of the mixed liquid of the resin and the curing agent is detected by the ultrasonic device in the defoaming process, so that the bubble content variation trend of the mixed liquid of the reaction resin and the curing agent in the defoaming process and the energy value captured by the ultrasonic device in the peak period are quickly quantified, the energy value reaches the standard for production by adopting the preset air extraction equipment, and the defect that the wind power blade is whitened due to bubble aggregation is overcome.
The defoaming process comprises a stage I and
stage I, the content of air bubbles in the mixed liquid of the resin and the curing agent is gradually reduced,
the stage is that the content of air bubbles in the mixed liquid of the resin and the curing agent reaches the lowest value under the current air pumping state; the resin is epoxy resin.
The invention has the beneficial effects that: the invention uses the ultrasonic device to detect the bubble content in the resin and the curing agent thereof in the wind power blade manufacturing industry for the first time, can quickly and quantitatively reflect the bubble content trend in the solution in the defoaming process of the resin and/or the curing agent, and is a detection method with great application value. The defects that the wind power blades are whitened to form various grades due to bubble aggregation are effectively avoided, the hidden danger that the fan cannot normally operate or even the wind power blades are scrapped due to the defects is eliminated, and huge maintenance cost or other economic losses brought to blade production plants and host plants are greatly reduced. The method is simple and reliable, and is suitable for matrix resin materials of wind turbine blades in the wind turbine blade industry.
Drawings
FIG. 1 is a graph showing ultrasonic detection energy during defoaming of a mixed solution of a standard capacity resin and a curing agent; fig. 2 is a schematic diagram of an ultrasonic device.
Detailed Description
The first embodiment is as follows:
referring to fig. 1 to 2, a method for detecting bubble content during defoaming of resin and curing agent by using ultrasonic waves first obtains an energy reference value by detecting the bubble content of purified water in a static state. The ultrasonic device is connected, and after the probe is fixed by the tool, the probe is placed in the purified water. Care is taken that the water does not contain particles, impurities or other contaminants. And starting the ultrasonic device and relevant data acquisition equipment and software thereof, keeping the tool still for a period of time, adjusting the position of the tool, and keeping the tool still to obtain a standard energy diagram. Stable data can be obtained when the probe is fixed at a certain position, but the energy value fluctuates greatly when the position of the probe is adjusted. The reason is that the detection method is sensitive to position, which is the reason for the detection method itself. The probe is spaced a suitable predetermined distance as desired, at which the maximum energy that can be captured by the ultrasound device is about 300000(mV ms)/S. The polynomial in fig. 1 is originally carried when the system machine forms a curve, and the waveform is converted into a curve represented by the polynomial in fig. 1 by a certain polynomial.
Then, the bubble content of the resin and/or curing agent solution is detected. The method comprises the following steps:
1. connecting the ultrasonic devices;
2. and (4) placing the probe. The two probes of the ultrasonic device are fixed on the tool, and the two probes are ensured to be opposite. The probes of the ultrasonic device are placed in the mixed liquid of the epoxy resin and the curing agent thereof, so that the stable spacing and no shaking of the probes in the detection process are ensured. This placement method requires care to protect the probe from contamination.
3. And obtaining an energy diagram of the epoxy resin and the curing agent thereof. And (3) putting the probe fixed on the tool into the solution to be treated, and paying attention to protect the probe from being polluted. And starting the ultrasonic device and data acquisition related equipment and software thereof. And starting the ultrasonic device and relevant data acquisition equipment and software thereof, and detecting the content of the bubbles in the epoxy resin and the curing agent thereof.
4. And (6) collecting and analyzing data. Fig. 1 shows an ultrasonic detection curve (ultrasonic detection energy curve in the defoaming process of a mixed solution of a standard capacity resin and a curing agent) in the defoaming process after mixing a certain brand of epoxy resin and the curing agent. In the I-stage defoaming process, the bubble content is lower and lower, and the energy of ultrasonic waves attenuated by passing through the glue solution is lower and lower, so that the energy curve is higher and higher; when arriving
And in the stage, the ultrasonic energy curve tends to be stable (namely fluctuates between a certain narrow numerical range near the peak value) when reaching the peak, and the content of the bubbles in the glue solution (the mixed solution of the epoxy resin and the curing agent) is indicated so as to reach the lowest value in the current air extraction state. Checking the stabilization phase by means of an energy curve (
Stage) is higher than 300000(mV ms/S), it is determined whether the mixed liquid (epoxy resin and curing agent mixed liquid) is available for production. When the energy captured by the ultrasonic device is higher than 300000(mV ms/S), the mixed liquid of the epoxy resin and the curing agent thereof can be used for production. If the standard can not be achieved, the air extraction equipment can be replaced or the air extraction force can be increased according to the requirement, and the defoaming treatment of the mixed liquid of the resin and the curing agent is continued until the standard is achieved.
The principle of the scheme is illustrated as follows. An ultrasonic apparatus (ultrasonic measuring instrument) is shown in FIG. 2.
The ultrasonic wave propagates in a straight line direction in a uniform medium, but when the ultrasonic wave reaches an interface or meets different media, the ultrasonic wave is reflected and refracted like a light wave and obeys the reflection and refraction laws similar to geometric optics, and according to the difference of absorption and attenuation of the ultrasonic wave in gas, liquid and solid, whether gas exists between an ultrasonic wave transmitting transducer and an ultrasonic wave receiving transducer is detected by a transmission method, so that the bubble content detection device is manufactured.
Detecting the content of bubbles in the glue solution, which is equal to the ultrasonic flaw detection of a continuous medium, wherein the bubbles in the glue solution can be regarded as internal defects of the liquid, and when no defect exists in the liquid, the attenuation of the energy of the ultrasonic wave passing through the liquid is small, and the energy of the ultrasonic wave received by the transducer is strong; when bubbles exist, most energy of the ultrasonic wave is absorbed by the gas, and the energy received by the ultrasonic transducer is very small.
The ultrasonic equipment transmits and receives ultrasonic waves, and the bubble content in the glue solution is represented by the energy received by the receiving transducer. The more resin bubbles, the more energy is lost through the resin, the less energy is ultimately received and the lower the amount of energy displayed on the software.
The method is characterized in that bubbles are not generated in the pure water basically in a static state, the energy which can be stably captured by ultrasonic waves in the pure water is used as an energy reference value, and when the energy which can be stably captured in the resin is higher than the energy reference value, the content of the bubbles in the resin is judged to reach the standard for production.
The scheme can be used for measuring the bubble content of other liquid substances. The frock in this scheme enlarges size or reduces the size.
Example two:
a method for detecting the content of bubbles in the defoaming process of resin and curing agent by using ultrasonic waves comprises the following steps:
the method comprises the following steps: acquiring an energy reference value: preparing an ultrasonic detection system, wherein the ultrasonic detection system comprises an ultrasonic device and a control analysis module; detecting the bubble content of the purified water in a static state, obtaining an energy reference value, and storing the energy reference value in a control analysis module; the probes are spaced apart by a predetermined distance at which the maximum energy that can be captured by the ultrasound device is 300000(mV ms)/S, and an energy reference value is determined to be 300000(mV ms)/S.
Step two: detecting the bubble content of the resin and/or curing agent solution in the defoaming process to obtain a second energy value which can be captured by the ultrasonic device;
s1: placing a probe: installing a probe by adopting a tool; two probes of the ultrasonic device are respectively fixed on two tools and are oppositely arranged; the tool comprises a slide way assembly arranged on a device for containing resin and/or curing agent solution, a probe mounting seat arranged on the slide way assembly and a fixing piece arranged on the probe mounting seat, wherein the probe mounting seat can move along the slide way assembly and can be fixed on the slide way assembly through the fixing piece after moving to a required position;
s2: ultrasonic detection: the resin and/or curing agent solution starts to be defoamed, the defoaming process comprises a stage I and
stage I, stage I is a stage in which the content of bubbles in the resin and/or curing agent solution is gradually reduced,
the stage is that the content of air bubbles in the resin and/or curing agent solution reaches the lowest value under the current air pumping state; meanwhile, starting an ultrasonic device to detect the bubble content in the process of defoaming the resin and/or the curing agent solution;
s3: collecting data: collecting data detected by the ultrasonic device through a data collection module: energy change data after attenuation of ultrasonic waves through resin and/or curing agent solution in stage I and
energy data reaching the peak period can be captured by the ultrasonic device in the stage;
s4: obtaining an ultrasonic detection energy chart of the resin and/or curing agent solution: the data collection module sends the collected data to the control analysis module, the control analysis module analyzes and processes the received data, and synchronously draws an ultrasonic detection energy curve diagram in the defoaming process of the resin and/or curing agent solution in real time, and synchronously displays the ultrasonic detection energy curve diagram in real time through the display module;
s5: observing an ultrasonic detection energy curve chart in the defoaming process of the resin and/or curing agent solution
In the stage, after an energy value (energy value two) which can be captured by the ultrasonic device and reaches the peak period is in a certain numerical range and continues for a preset time, the defoaming of the resin and/or the curing agent solution is stopped, and the ultrasonic detection is stopped at the same time;
step three: and (3) comparison and judgment:
will be provided with
Comparing the energy value captured by the ultrasonic device with the energy reference value to judge whether the resin and/or the curing agent solution can be used for production, and if so, judging whether the resin and/or the curing agent solution can be used for production
When the energy value captured by the stage ultrasonic device is higher than the energy reference value, the resin and/or the curing agent can be used for production. The determination is made by observing the energy profile in real time.
An ultrasonic detection system is adopted for detection, and the ultrasonic detection system comprises an ultrasonic device, a data collection module, a display module, a storage module, a control analysis module and a tool for installing a probe; the ultrasonic device is connected with the data collection module, and the ultrasonic device, the data collection module, the display module and the storage module are all connected with the control analysis module; the ultrasonic device is used for transmitting and receiving ultrasonic waves; the data collection module is used for collecting data received by the ultrasonic device and transmitting the data to the control analysis module; the control analysis module is used for analyzing and processing the received data, drawing an energy curve graph to obtain a detection result, sending all the data to the storage module for storage, and sending the energy curve graph to the display module for display in real time; the storage module is used for storing all data, including an energy reference value, an energy value II and an energy curve graph; the display module is used for displaying the energy curve graph in real time and facilitating operation. The ultrasonic device is an ultrasonic measuring instrument which comprises an ultrasonic generator, an ultrasonic transducer and an amplifying and filtering device.
A method for defoaming mixed liquid of resin and curing agent comprises the method for detecting the content of bubbles in the defoaming process of resin and curing agent by using ultrasonic waves; the bubble content of the mixed liquid of the resin and the curing agent is detected by the ultrasonic device in the defoaming process, so that the bubble content variation trend of the mixed liquid of the reaction resin and the curing agent in the defoaming process and the energy value captured by the ultrasonic device in the peak period are quickly quantified, the energy value reaches the standard for production by adopting the preset air extraction equipment, and the defect that the wind power blade is whitened due to bubble aggregation is overcome. The resin is an epoxy resin.
The above two embodiments, where they do not conflict or overlap, may be common or common to each other.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A method for detecting bubble content in the defoaming process of resin and curing agent by using ultrasonic waves is characterized in that an ultrasonic device is used for detecting the bubble content of purified water in a static state, and an energy reference value is determined according to an energy value I captured by the ultrasonic device in the detection; then, detecting the bubble content of the resin and/or the curing agent in the defoaming process by using an ultrasonic device, comparing an energy value II captured by the ultrasonic device in the detection with an energy reference value to judge whether the bubble content in the resin and/or the curing agent reaches the standard, and judging that the bubble content in the resin and/or the curing agent reaches the standard when the energy value II is higher than the energy reference value and lasts for a preset time;
the method for detecting the bubble content in the defoaming process of the resin and the curing agent by using ultrasonic waves comprises the following steps of:
the method comprises the following steps: acquiring an energy reference value: preparing an ultrasonic detection system, wherein the ultrasonic detection system comprises an ultrasonic device and a control analysis module; detecting the bubble content of the purified water in a static state, obtaining an energy reference value, and storing the energy reference value in a control analysis module;
step two: detecting the bubble content of the resin and/or the curing agent, which specifically comprises the following steps:
s1: placing a probe: the probes are placed in resin and/or curing agent, so that the stable distance between the two probes is ensured and the probes do not shake in the detection process;
s2: ultrasonic detection: the resin and/or curing agent begin to be defoamed, the defoaming process comprises a stage I and
stage I, stage I is a stage in which the content of bubbles in the resin and/or the curing agent is gradually reduced,
the stage is that the content of air bubbles in the resin and/or the curing agent reaches the lowest value under the current air pumping state; meanwhile, starting an ultrasonic device to detect the bubble content of the resin and/or the curing agent in the defoaming process;
s3: collecting data: collecting data detected by the ultrasonic device through a data collection module: energy change data after attenuation of ultrasonic waves through resin and/or curing agent in stage I and
energy data reaching the peak period can be captured by the ultrasonic device in the stage;
s4: acquiring an ultrasonic detection energy map: the data collection module sends the collected data to the control analysis module, the control analysis module analyzes and processes the received data, and synchronously draws an ultrasonic detection energy curve graph in the defoaming process of the resin and/or the curing agent in real time and synchronously displays the ultrasonic detection energy curve graph in real time through the display module;
s5: observing an ultrasonic detection energy curve chart in the defoaming process of the resin and/or the curing agent
In the stage, after the energy value which can be captured by the ultrasonic device and reaches the peak period is in a certain numerical range and continues for a preset time, the defoaming of the resin and/or the curing agent is stopped, and the ultrasonic detection is stopped at the same time;
step three: and (3) comparison and judgment:
will be provided with
Comparing the energy value captured by the ultrasonic device with the energy reference value to judge whether the resin and/or the curing agent can be used for production, and if so, judging whether the resin and/or the curing agent can be used for production
When the energy value captured by the stage ultrasonic device is higher than the energy reference value, the resin and/or the curing agent can be used for production.
2. The method for detecting bubble content during a defoaming process of resin and curing agent by using ultrasonic waves as claimed in claim 1, wherein in the step one, when the bubble content of the purified water in a static state is detected, the probes are spaced at a predetermined distance, the maximum energy which can be captured by the ultrasonic device is 300000(mV ms)/S at the predetermined distance, and the energy reference value is determined to be 300000(mV ms)/S.
3. The method for detecting the bubble content in the defoaming process of the resin and the curing agent by utilizing the ultrasonic waves as claimed in claim 1 or 2, wherein a tool is adopted for installing the probe; two probes of the ultrasonic device are respectively fixed on two sides of a tool, and the two probes are arranged oppositely.
4. The method for detecting the bubble content in the defoaming process of the resin and the curing agent by using the ultrasonic waves as claimed in claim 3, wherein the tool comprises a slide way assembly arranged on a device for containing the resin and/or the curing agent, a probe mounting seat arranged on the slide way assembly and a fixing piece arranged on the probe mounting seat, and the probe mounting seat can move along the slide way assembly and can be fixed on the slide way assembly through the fixing piece after being moved to a required position.
5. The method for detecting the bubble content in the defoaming process of the resin and the curing agent by using the ultrasonic waves as claimed in claim 1, wherein an ultrasonic detection system is adopted for detection, and the ultrasonic detection system comprises an ultrasonic device, a data collection module, a display module, a storage module, a control analysis module and a tool for installing a probe; the ultrasonic device is connected with the data collection module, and the ultrasonic device, the data collection module, the display module and the storage module are all connected with the control analysis module; the ultrasonic device is used for transmitting and receiving ultrasonic waves; the data collection module is used for collecting data received by the ultrasonic device and transmitting the data to the control analysis module; the control analysis module is used for analyzing and processing the received data, drawing an energy curve graph to obtain a detection result, sending all the data to the storage module for storage, and sending the energy curve graph to the display module for display in real time; the storage module is used for storing all data, including an energy reference value, an energy value II and an energy curve graph; the display module is used for displaying the energy curve graph in real time and facilitating operation.
6. The method for detecting the bubble content in the defoaming process of resin and curing agent by using ultrasonic waves as claimed in claim 1, wherein the ultrasonic wave device is an ultrasonic wave measuring instrument, and the ultrasonic wave measuring instrument comprises an ultrasonic generator, an ultrasonic transducer and an amplifying and filtering device.
7. A method for defoaming mixed liquid of resin and curing agent, which is characterized by comprising the method for detecting the content of bubbles in the defoaming process of resin and curing agent by using ultrasonic waves as claimed in claim 1; the bubble content of the mixed liquid of the resin and the curing agent is detected by the ultrasonic device in the defoaming process, so that the bubble content variation trend of the mixed liquid of the reaction resin and the curing agent in the defoaming process and the energy value captured by the ultrasonic device in the peak period are quickly quantified, the energy value reaches the standard for production by adopting the preset air extraction equipment, and the defect that the wind power blade is whitened due to bubble aggregation is overcome.
8. The method as claimed in claim 7, wherein the defoaming step comprises a step I and a step II
Stage I, the content of air bubbles in the mixed liquid of the resin and the curing agent is gradually reduced,
the stage is that the content of air bubbles in the mixed liquid of the resin and the curing agent reaches the lowest value under the current air pumping state; the resin is epoxy resin.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189509A (en) * | 2005-06-03 | 2008-05-28 | 弗雷泽纽斯医疗保健德国有限公司 | Method and device for monitoring a flow of liquid for the presence of air by means of ultrasound |
| CN101256171A (en) * | 2008-04-03 | 2008-09-03 | 华中科技大学 | Method and system for real time monitoring ultrasound wave during composite material curing process |
| EP2717026A2 (en) * | 2012-10-04 | 2014-04-09 | Sonotec Ultraschallsensorik Halle GmbH | Method of and apparatus for determining a flow rate of a fluid and detecting gas bubbles or particles in the fluid |
| CN104736200A (en) * | 2012-11-05 | 2015-06-24 | 皇家飞利浦有限公司 | Medical apparatus for determining a maximum energy map |
| WO2016029268A1 (en) * | 2014-08-27 | 2016-03-03 | Commonwealth Scientific And Industrial Research Organisation | A method and a device for acoustic estimation of bubble properties |
| JP2017106865A (en) * | 2015-12-11 | 2017-06-15 | ニプロ株式会社 | Fluid concentration measuring apparatus and bubble detecting apparatus |
| CN107238659A (en) * | 2017-05-25 | 2017-10-10 | 华中科技大学 | A kind of argoshield measuring method and device based on ultrasonic transducer |
| CN108088509A (en) * | 2016-11-21 | 2018-05-29 | 成都安特诺科技有限公司 | Supersonic reflectoscope, bubble detection and removal device and bubble removal device |
-
2018
- 2018-08-23 CN CN201810964639.XA patent/CN109085236B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189509A (en) * | 2005-06-03 | 2008-05-28 | 弗雷泽纽斯医疗保健德国有限公司 | Method and device for monitoring a flow of liquid for the presence of air by means of ultrasound |
| CN101256171A (en) * | 2008-04-03 | 2008-09-03 | 华中科技大学 | Method and system for real time monitoring ultrasound wave during composite material curing process |
| EP2717026A2 (en) * | 2012-10-04 | 2014-04-09 | Sonotec Ultraschallsensorik Halle GmbH | Method of and apparatus for determining a flow rate of a fluid and detecting gas bubbles or particles in the fluid |
| CN104736200A (en) * | 2012-11-05 | 2015-06-24 | 皇家飞利浦有限公司 | Medical apparatus for determining a maximum energy map |
| WO2016029268A1 (en) * | 2014-08-27 | 2016-03-03 | Commonwealth Scientific And Industrial Research Organisation | A method and a device for acoustic estimation of bubble properties |
| JP2017106865A (en) * | 2015-12-11 | 2017-06-15 | ニプロ株式会社 | Fluid concentration measuring apparatus and bubble detecting apparatus |
| CN108088509A (en) * | 2016-11-21 | 2018-05-29 | 成都安特诺科技有限公司 | Supersonic reflectoscope, bubble detection and removal device and bubble removal device |
| CN107238659A (en) * | 2017-05-25 | 2017-10-10 | 华中科技大学 | A kind of argoshield measuring method and device based on ultrasonic transducer |
Non-Patent Citations (2)
| Title |
|---|
| "Effect of bubble based degradation on the physical properties of Single Wall Carbon Nanotube/Epoxy Resin composite and new approach in bubbles reduction";Seyyed Alireza Hashemi，Seyyed Mojtaba Mousavi;《Composites：Part A》;20160817;457-469 * |
| "复合绝缘子注射成型及在线监测研究";胡培根;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;中国学术期刊（光盘版）电子杂志社;20160315;73-74 * |
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