CN115406907A - Solid propellant combined charge inner surface detection device and method - Google Patents
Solid propellant combined charge inner surface detection device and method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 26
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Abstract
The invention discloses a device and a method for detecting the inner surface of solid propellant combined charge. The device can be provided with different numbers of branch probes according to different combined charge structures, reduces the operation times and steps of the endoscope in the combined charge propellant, improves the safety and reduces the damage probability of the combined charge propellant.
Description
Technical Field
The invention belongs to the technical field of solid propellants, and relates to a device and a method for detecting the inner surface of a solid propellant combined charge.
Background
In the propellant development process and test, no matter the screw pressing process, the granule casting process or the casting process, the defects of micro cracks, scratches, depressions, or good plasticization and the like can occur on the inner surface of the grain, the defects are not easy to be found in the conventional X-ray detection, but the defects seriously affect the combustion performance of the propellant, so that the working curve is abnormal, and even the propellant explodes.
From the technical means, the detection of the inner surface performance is completed by an industrial endoscope. At present, the method is mainly used for inspection of industrial pipelines, equipment inner cavities and closed containers at home and abroad. The domestic propellant industry is also only used for qualitative detection. By detecting the inner surface performance and measuring the quality of the propellant, the combustion performance can be estimated, and meanwhile, relevant measurement data is transmitted to a design and a developer so as to solve the quality problem which possibly occurs in the development process and influences the inner surface performance.
However, when the endoscope with a single probe is used for detecting the combined charges of the multi-star-hole engine, the operation time and the operation steps are long, each star-hole tooth needs to be sequentially inserted for detection, and in the operation process, the probe is completely operated manually, so that the inner surface of the propellant can be scratched, and the combustion performance of the combined charge propellant is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to detect the inner surface performance of the propellant charge by using a multi-probe endoscopic optical imaging detection technology, reduce the operation steps and the operation time in the detection process, reduce the probability of damage to the combined propellant, find various defects influencing the inner surface performance of the propellant charge, carry out qualitative and quantitative analysis on the defects and achieve the purpose of quality control in the development process of the propellant charge; therefore, the device and the method for detecting the inner surface of the solid propellant combined charge are provided.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the utility model provides a solid propellant combined charge internal surface detection device, sets up handheld machine connect the optic fibre transmission piece that sets up signal transmission usefulness on the handheld machine, optic fibre transmission piece tip sets up the switching dish, the switching dish on install at least one branch probe.
Optionally, the adapter plate is a disc member in which a plurality of optical fiber adapter ports are embedded.
Optionally, at least around the circumference, a plurality of optical fiber adapter ports are uniformly arranged on the adapter plate.
Optionally, an optical fiber adapter is further disposed at the center of the adapter plate.
Optionally, the branch probe comprises an optical fiber adapter, a branch optical fiber, a camera and an objective adapter which are sequentially connected.
Optionally, the optical fiber adapter is an ST optical fiber interface.
Optionally, the optical fiber transmission member is composed of a plurality of optical fibers corresponding to the adapter plate; the outer layer of the optical fiber is a tungsten wire braid layer, and the optical fiber body is wrapped in the optical fiber; one end of the optical fiber transmission piece is connected with the handset, and the other end of the optical fiber transmission piece is connected with the adapter plate.
Optionally, the adapter plate is of a cylindrical cavity structure and made of titanium alloy, a plurality of optical fiber adapter ports are embedded in the adapter plate, and the optical fiber adapter ports are FC optical fiber ports; the adapter disc adopts an FC protocol, and transmits image data captured by the branch probe through the optical fiber transmission piece.
The invention discloses a method for detecting the inner surface of a solid propellant combined charge, which is realized by adopting any device for detecting the inner surface of the solid propellant combined charge, and comprises the following steps:
the method comprises the following steps: installing unequal number of branch probes according to the medicine type structure of the combined charging propellant;
step two: shooting above a star hole of the combined charge propellant, and observing the damage condition of the mouth part of the star hole;
step three: extending the installed branch probe and the installed adapter plate into the center of the charge star hole, slowly pushing inwards, observing the flaw detection condition on a display screen of the hand-held machine, and marking an image;
step four: shooting the bottoms of star holes of the combined propellant, and observing the damage condition of the bottoms of the star holes; when defects are found in conventional detection and close-range observation is needed, the far-focus lens is replaced by the near-focus lens; and storing the shot pictures in the handheld machine and exporting the pictures.
Optionally, the result judgment is performed on the obtained image, and the steps are as follows:
(1) Importing the shot image into image analysis software in a JPG format, wherein the image is a black and white image and has gray distribution;
(2) Image analysis software automatically identifies the gray value of the picture and judges the types of defects of the propellant, including cracks, pits, bulges, scratches, foreign matters and dirt;
the crack defect is a strip defect with the width larger than 1mm, and the gray difference between the central line of the defect and the gray of 60% of the pixel points at the edge of the defect is more than 20%;
the pit defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are higher than the gray level of the edge of the defect by more than 30%;
the bulge defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are more than 30% smaller than the gray level of the edge of the defect;
the scratch defect is a strip defect with the width less than 1mm, and the gray level difference between the central line of the defect and 60% of the pixel points at the edge of the defect is more than 20;
the foreign matter defect is larger than 2mm in area 2 60% of pixel points in the defect and the gray level of the edge of the defect are higher than 30;
the dirt defect is that the area is larger than 2mm 2 60% of pixel points in the defect and the gray level of the edge of the defect are smaller by more than 30;
(3) The software exports the identified result, and secondary screening is carried out manually; when the inner surface detects that the crack defect exists, the dispensing column is removed; when pits, bulges and scratches are detected on the inner surface, the number of various defects can be counted according to the technical file requirements of specific products, the size of the collected defect image is measured, and the result is comprehensively evaluated; when the inner surface detects the foreign matters or dirt, whether the inner surface can be cleaned is determined, if the inner surface can be cleaned, the defect does not need to be judged, and if the inner surface cannot be cleaned, the result is evaluated according to the technical file requirements of specific products.
The invention has the following beneficial effects:
the invention discloses a multi-probe inner surface detection device and a detection method, wherein the structure and the number of probes are adjusted according to the type of a combined propellant charge, and the detection of all star-hole teeth of the combined propellant charge can be completed by one operation before detection, so that the operation steps and the operation time in the detection process are greatly reduced, the probability of damage to the combined propellant charge is reduced, and the quality stability and the safety of the operation process of the combined propellant charge are improved.
Drawings
FIG. 1 is a schematic diagram of a solid propellant combination charge inside surface detection device of the present invention;
FIG. 2 is a schematic view of the adapter plate of FIG. 1;
FIG. 3 is a schematic diagram of the branched probe of FIG. 1;
FIG. 4 is a schematic representation of a star hole for a combination charge propellant as described in examples 1 and 2 of the present invention, wherein FIG. a is example 1 and FIG. b is example 2;
figure 5 is a diagram of a scratch on the surface of the propellant produced using a solid propellant combination charge inside surface inspection device;
FIG. 6 is a graph of a solid propellant combination charge internal surface crack defect;
FIG. 7 is a diagram of a solid propellant combined charge having a surface dimple defect;
figure 8 is a diagram of a surface protrusion defect within a solid propellant combined charge;
FIG. 9 is a diagram of a solid propellant combination charge having internal surface foreign matter defects;
figure 10 is a graph of a surface contamination defect on a solid propellant combination charge;
the meaning of the individual reference symbols in the figures is: the system comprises a 1-handset, a 2-optical fiber transmission piece, a 3-switching disk, a 31-optical fiber switching interface, a 4-branch probe, a 41-optical fiber switching head, a 42-branch optical fiber, a 43-camera and a 44-objective lens switching head.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
With reference to fig. 1-3, the solid propellant combined charge inner surface detection device of the present invention is provided with a hand-held set 1, an optical fiber transmission member 2 for signal transmission is connected to the hand-held set 1, an adapter 3 is arranged at an end of the optical fiber transmission member 2, and at least one branch probe 4 is installed on the adapter 3. The handset 1 is provided with components such as an LCD display screen, function keys, an LED illuminating lamp and the like, correspondingly, the display screen on the handset 1 can be divided into labels according to the number of the branch probes 4, and images captured by each independent branch probe 4 can be displayed independently to realize accurate observation; the LED illuminating lamp is integrated in the handset 1, and the light source is conducted to the branch probe 4 by the optical fiber transmission piece 2; the butt joint between the adapter plate 3 and the branch probes 4 adopts optical fiber interfaces, a plurality of optical fibers corresponding to the branch probes 4 are arranged in the optical fiber transmission part 2, and image capture is respectively carried out on each branch probe 4; before detection, the structure and the number of the probes are adjusted according to the type of the combined propellant charge propellant, detection of all star-hole teeth of the combined propellant charge propellant can be completed through one operation, operation steps and operation time in the detection process are greatly reduced, the probability of damage to the combined propellant charge propellant is reduced, and the quality stability and the safety of the operation process of the combined propellant charge propellant are improved.
In the embodiment of the present disclosure, the adapter 3 is a disk member in which a plurality of optical fiber adapters 31 are embedded. For the quotation, can carry out the setting of optic fibre switching mouth 31 as required on it at the one end of switching dish 3, satisfy the measuring demand in multiple pore, simultaneously, carry out the setting of binding off by the other end of switching dish 3, collect a plurality of optic fibre by binding off department to easy to assemble and switching.
In the embodiment of the disclosure, at least around circumference, evenly set up a plurality of optic fibre adapter ports 31 on adapter plate 3, the entering of regular explosive column inner bore can be realized to peripheral setting, avoids mutual influence.
In the embodiment of the present disclosure, an optical fiber adapter 31 is further disposed at a central position of the adapter 31, and the optical fiber adapter 31 at the central position is mainly used for obtaining images of the bottom of a large channel at the center of a grain and obtaining images of the mouth of the grain at the beginning.
In the embodiment of the present disclosure, the branch probe 4 includes a fiber adapter 41, a branch optical fiber 42, a camera 43, and an objective adapter 44, which are sequentially connected. The length of the branch probe 4 is 200mm, the diameter of the branch optical fiber 42 is 6.1mm, a tungsten wire braid layer is arranged outside, an optical fiber adapter 41 is arranged at the upper end, and a camera 43 and an objective lens adapter 44 are arranged at the lower end; the optical fiber adapter 41 is an ST optical fiber interface, and the diameter of a ceramic ferrule of the ST optical fiber interface is 2.499mm; the picture data shot by the camera 43 is transmitted to the optical fiber transmission part 2 through an ST optical fiber interface and is stored by the handset 1; the objective adapter 44 includes a near focus adapter and a far focus adapter, and is made of titanium alloy.
In the embodiment of the present disclosure, the optical fiber transmission member 2 is composed of a plurality of optical fibers corresponding to the adapter 3; the outer layer of the optical fiber is a tungsten filament braid layer, and the optical fiber body is wrapped in the optical fiber; one end of the optical fiber transmission piece 2 is connected with the handset 1, and the other end is connected with the adapter plate 3. For example, the optical fiber has a length of 4.5m and a diameter of 6.1mm, and has a tungsten braid on the outside for protecting the electrical lines and the optical fiber.
In the embodiment of the present disclosure, the adapter plate 3 is a cylindrical cavity structure made of titanium alloy, a plurality of optical fiber adapter ports 31 are embedded in the adapter plate 3, and the optical fiber adapter ports 31 are FC optical fiber interfaces; the adapter 3 adopts FC protocol to transmit the image data captured by the branch probe 4 through the optical fiber transmission member 2. For example, the adapter 3 is a cylindrical structure with a diameter of 50mm and a thickness of 50mm, the material of the adapter is titanium alloy, the upper end of the adapter is connected with the optical fiber transmission part 2, the lower end of the adapter is provided with nine FC optical fiber interfaces, the diameters of the interfaces are 6.1mm, the interfaces are also arranged at the circle center of the adapter 3, and the interfaces in the circumferential direction are equidistantly distributed on a circle with the circle center interface as the circle center radius of 15 mm.
The method for detecting the inner surface of the solid propellant combined charge is realized by adopting the device for detecting the inner surface of the solid propellant combined charge, and comprises the following steps:
the method comprises the following steps: installing unequal number of branch probes 4 according to the medicine type structure of the combined charging propellant;
step two: shooting above a star hole of the combined charge propellant, and observing the damage condition of the mouth part of the star hole;
step three: the installed branch probe 4 and the adapter plate 3 are inserted from the center of the charge star hole and slowly pushed inwards, the flaw detection condition is observed on the hand-held machine 1, and the image is marked;
step four: shooting the bottoms of star holes of the combined propellant, and observing the damage condition of the bottoms of the star holes; when defects are found in conventional detection and close-range observation is needed, the far-focus lens is changed to the near-focus lens; the pictures taken are stored in the handset 1 and exported.
In addition, the result judgment is also carried out on the obtained image, and the steps are as follows:
(1) Importing the shot image into image analysis software in a JPG format, wherein the image is a black and white image and has gray distribution;
(2) Image analysis software automatically identifies the gray value of the picture and judges the types of defects of the propellant, including cracks, pits, bulges, scratches, foreign matters and dirt;
the crack defect is a strip defect with the width larger than 1mm, and the gray level difference between the central line of the defect and the pixel point of 60% of the edge of the defect is more than 20, as shown in fig. 6;
the pit defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are higher than the gray level of the edge of the defect by more than 30%, as shown in fig. 7;
the convex defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are smaller than the gray level of the edge of the defect by more than 30%, as shown in fig. 8;
the scratch defect is a strip defect with the width less than 1mm, and the gray difference between the central line of the defect and the gray of 60% of the pixel points at the edge of the defect is more than 20, as shown in fig. 5;
the foreign matter defect is larger than 2mm 2 The gray level of 60% of the pixel points and the edge of the defect is higher by more than 30, as shown in fig. 9;
the dirt defect is that the area is larger than 2mm 2 The gray scale of 60% of the pixel points and the edge of the defect is smaller than 30 or more, as shown in fig. 10;
(3) The software exports the identified result, and secondary screening is carried out manually; when the crack defect is detected on the inner surface, the propellant column is removed (because the depth and the trend of the crack have uncertainty, the combustion surface of the propellant with the crack defect can change greatly when the propellant works, the combustion performance of the propellant is seriously influenced, even the engine disintegration explosion accident occurs, so when the crack defect exists on the inner surface of the propellant, the propellant is directly judged to be unqualified); when the inner surface is detected to have pits, bulges and scratches, the number of various defects can be counted according to the technical file requirements of specific products, the size of the acquired defect image is measured, and the result is comprehensively evaluated; when the inner surface detects foreign matters or dirt, whether the inner surface can be cleaned or not is firstly determined, if the inner surface can be cleaned, the defect does not need to be judged, and if the inner surface cannot be cleaned, the result is evaluated according to the technical file requirements of specific products.
Example 1:
the star-hole structure of a certain combined charge propellant is schematically shown in fig. 4a, and is an octadentate star-hole charge structure used for inspecting the multi-probe inner surface detection device and method disclosed by the patent.
The implementation device is implemented by adopting the solid propellant combined charge inner surface detection device;
the detection method comprises the following steps:
the method comprises the following steps: numbering the propellant to be detected according to the specification, marking the propellant to be detected by using a proper method, cleaning the inner surface of the propellant to be detected, keeping the inner surface clean, and putting the propellant to be detected into a workbench;
step two: according to the medicine type structure of the large combined propellant charge, nine branch probes 4 are all arranged on the adapter plate 3, and debugging is carried out to confirm that the instrument is normal;
step three: shooting above a star hole of the combined charge propellant to observe the damage condition of the mouth part of the star hole;
step four: the installed branch probe 4 and the installed adapter plate 3 extend into the center of the charge star hole and slowly push inwards, flaw detection conditions are observed on a display screen of the hand-held machine, and images are marked;
step five: shooting the bottoms of star holes of the combined propellant, and observing the damage condition of the bottoms of the star holes;
step six: when defects are found in conventional detection and close-range observation is needed, the far-focus lens of the objective adapter 44 is switched to the near-focus lens;
step seven: storing the shot pictures in the handheld machine and leading out the pictures through a U disk;
step eight: and judging the result, and the steps are as follows:
and (3) importing the shot picture into image analysis software in a JPG format, and performing gray level analysis and identification to obtain the following results:
there were 1 pit defect with a diameter of 0.5mm as shown in fig. 7.
There were 1 protrusion defects with a diameter of 3mm as shown in fig. 8.
And (4) judging the defect number and the size are in a specified range according to the technical file requirement, and judging the defect number and the size are qualified.
Example 2:
the star-hole structure of a certain combined charge propellant is schematically shown in fig. 4b, and the star-hole structure is a four-tooth star-hole charge structure and is used for detecting the multi-probe inner surface detection device and method.
The following results were obtained:
there were 1 crack defect with a length of 5cm, as shown in FIG. 6.
And (5) judging the defect number and the size are not in the specified range according to the technical file requirement, and judging the defect number and the size to be unqualified.
The preferred embodiments were discussed in detail with preference to the above selection in conjunction with the accompanying drawings and are not intended to limit the invention. The specific technical features described above can be combined in any suitable form without contradiction, and the present invention is not described in detail. Any means that can be easily modified or modified by those skilled in the art, such as arbitrary combination or equivalent substitution, is adopted without departing from the scope of the technical solution, and the essence of the technical solution is not affected and still falls within the protective scope of the technical solution represented by each embodiment of the present invention.
Claims (10)
1. The utility model provides a solid propellant combination charge internal surface detection device, its characterized in that sets up handheld machine (1) connect the optic fibre transmission piece (2) that set up signal transmission and use on handheld machine (1), optic fibre transmission piece (2) tip sets up adapter plate (3), adapter plate (3) on install at least one branch probe (4).
2. The solid propellant combination charge inside surface detection device of claim 1, wherein the adaptor plate (3) is a disc member with a plurality of optical fiber adaptor ports (31) embedded therein.
3. A solid propellant combination charge inside surface detection device as claimed in claim 1 or 2 wherein a plurality of optical fibre adapter ports (31) are evenly arranged on the adapter disc (3) at least around the circumference.
4. A solid propellant combination charge inside surface detection apparatus as claimed in claim 3 wherein an optical fibre adaptor (31) is also provided centrally on the adaptor disc (31).
5. The solid propellant combination charge inner surface detection device according to claim 1 or 2, wherein the branch probe (4) comprises an optical fiber adapter (41), a branch optical fiber (42), a camera (43) and an objective lens adapter (44) which are sequentially connected.
6. A solid propellant combination charge inside surface detection apparatus as claimed in claim 5 wherein the optical fibre adapter (41) is an ST optical fibre interface.
7. A solid propellant combination charge inside surface detection device according to claim 1 or 2 wherein the optical fiber transmission member (2) is comprised of a plurality of optical fibers corresponding to the adaptor plate (3);
the outer layer of the optical fiber is a tungsten wire braid layer, and the optical fiber body is wrapped in the optical fiber;
one end of the optical fiber transmission piece (2) is connected with the handset (1), and the other end of the optical fiber transmission piece is connected with the adapter plate (3).
8. The solid propellant combined charge inner surface detection device as claimed in claim 1 or 2, wherein the adapter plate (3) is of a cylindrical cavity structure and is made of titanium alloy, a plurality of optical fiber adapter ports (31) are embedded in the adapter plate (3), and the optical fiber adapter ports (31) are FC optical fiber interfaces;
the adapter plate (3) adopts an FC protocol to transmit image data captured by the branch probe (4) through the optical fiber transmission piece (2).
9. A method for detecting the inner surface of a solid propellant composite charge, which is realized by using the device for detecting the inner surface of the solid propellant composite charge as claimed in any one of claims 1 to 8, and comprises the following steps:
the method comprises the following steps: installing unequal number of branch probes (4) according to the shape structure of the combined charge propellant;
step two: shooting above a star hole of the combined charge propellant to observe the damage condition of the mouth part of the star hole;
step three: the installed branch probe (4) and the adapter plate (3) are inserted from the center of the charge star hole and slowly pushed inwards, the flaw detection condition is observed on the hand-held machine (1), and the image is marked;
step four: shooting the bottoms of star holes of the combined propellant, and observing the damage condition of the bottoms of the star holes; when defects are found in conventional detection and close-range observation is needed, the far-focus lens is changed to the near-focus lens; the pictures taken are stored in the handset (1) and exported.
10. A method of testing the inside surface of a solid propellant combination charge as claimed in claim 9 wherein the images obtained are subjected to the following steps:
(1) Importing the shot image into image analysis software in a JPG format, wherein the image is a black and white image and has gray distribution;
(2) Image analysis software automatically identifies the gray value of the picture and judges the types of defects of the propellant, including cracks, pits, bulges, scratches, foreign matters and dirt;
the crack defect is a strip defect with the width larger than 1mm, and the gray difference between the central line of the defect and the gray of 60% of the pixel points at the edge of the defect is more than 20%;
the pit defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are higher than the gray level of the edge of the defect by more than 30%;
the bulge defect is a quasi-circular defect with the diameter larger than 1mm, and 60% of pixel points in the defect are more than 30% smaller than the gray level of the edge of the defect;
the scratch defect is a strip defect with the width less than 1mm, and the gray difference between the central line of the defect and the 60% of the pixel points at the edge of the defect is more than 20;
the foreign matter defect is that the area is larger than 2mm 2 60% of pixel points in the defect and the gray level of the edge of the defect are higher than 30;
the dirt defect is that the area is larger than 2mm 2 The gray scale of 60% of pixel points and the edge of the defect is smaller than 30;
(3) The software exports the result that is discerned, carry on the secondary screening by the manpower; when the inner surface detects that the crack defect exists, the dispensing column is removed; when pits, bulges and scratches are detected on the inner surface, the number of various defects can be counted according to the technical file requirements of specific products, the size of the collected defect image is measured, and the result is comprehensively evaluated; when the inner surface detects foreign matters or dirt, whether the inner surface can be cleaned or not is firstly determined, if the inner surface can be cleaned, the defect does not need to be judged, and if the inner surface cannot be cleaned, the result is evaluated according to the technical file requirements of specific products.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602793A (en) * | 2003-09-30 | 2005-04-06 | 奥林巴斯株式会社 | Inserting shape detecting probe |
| CN201107466Y (en) * | 2007-11-27 | 2008-08-27 | 北京晋科光技术有限公司 | Hand-hold electronic industry endoscope |
| US20110059016A1 (en) * | 2007-09-27 | 2011-03-10 | Nirmala Ramanujam | Optical assay system with a multi-probe imaging array |
| US20120075619A1 (en) * | 2008-12-05 | 2012-03-29 | Nieman Linda T | Fiber-optic probes and associated methods |
| CN202699100U (en) * | 2012-07-20 | 2013-01-30 | 深圳市斯尔顿科技有限公司 | Hand-held optical coherence tomography (OCT) probe and OCT measurement system |
| CN203376199U (en) * | 2013-08-16 | 2014-01-01 | 中国人民解放军第二军医大学 | Multi-probe ultrasonic processor |
| CN106324086A (en) * | 2016-09-29 | 2017-01-11 | 爱德森（厦门）电子有限公司 | Double-layer coaxial screw hole detection device and double-layer coaxial screw hole detection method |
| CN210221898U (en) * | 2019-03-07 | 2020-03-31 | 中国科学院金属研究所 | Probe and detector for detecting ferromagnetic blockage in austenitic stainless steel pipe |
| CN210625893U (en) * | 2019-06-22 | 2020-05-26 | 深圳阿珂法先进科技有限公司 | Optical fiber sensor switching disc for temperature measuring system of oil-immersed transformer |
| CN112857452A (en) * | 2021-01-25 | 2021-05-28 | 连铸 | Continuous detection probe main body |
| CN218321400U (en) * | 2022-08-28 | 2023-01-17 | 瑞德肝脏疾病研究(上海)有限公司 | Multi-probe temperature control ultrasonic crusher |
-
2022
- 2022-08-12 CN CN202210965363.3A patent/CN115406907A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602793A (en) * | 2003-09-30 | 2005-04-06 | 奥林巴斯株式会社 | Inserting shape detecting probe |
| US20110059016A1 (en) * | 2007-09-27 | 2011-03-10 | Nirmala Ramanujam | Optical assay system with a multi-probe imaging array |
| CN201107466Y (en) * | 2007-11-27 | 2008-08-27 | 北京晋科光技术有限公司 | Hand-hold electronic industry endoscope |
| US20120075619A1 (en) * | 2008-12-05 | 2012-03-29 | Nieman Linda T | Fiber-optic probes and associated methods |
| CN202699100U (en) * | 2012-07-20 | 2013-01-30 | 深圳市斯尔顿科技有限公司 | Hand-held optical coherence tomography (OCT) probe and OCT measurement system |
| CN203376199U (en) * | 2013-08-16 | 2014-01-01 | 中国人民解放军第二军医大学 | Multi-probe ultrasonic processor |
| CN106324086A (en) * | 2016-09-29 | 2017-01-11 | 爱德森（厦门）电子有限公司 | Double-layer coaxial screw hole detection device and double-layer coaxial screw hole detection method |
| CN210221898U (en) * | 2019-03-07 | 2020-03-31 | 中国科学院金属研究所 | Probe and detector for detecting ferromagnetic blockage in austenitic stainless steel pipe |
| CN210625893U (en) * | 2019-06-22 | 2020-05-26 | 深圳阿珂法先进科技有限公司 | Optical fiber sensor switching disc for temperature measuring system of oil-immersed transformer |
| CN112857452A (en) * | 2021-01-25 | 2021-05-28 | 连铸 | Continuous detection probe main body |
| CN218321400U (en) * | 2022-08-28 | 2023-01-17 | 瑞德肝脏疾病研究(上海)有限公司 | Multi-probe temperature control ultrasonic crusher |
Non-Patent Citations (1)
| Title |
|---|
| 芮延年: "《机电一体化系统设计 第2版》", vol. 2, 30 July 2021, 苏州大学出版社, pages: 220 - 223 * |
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