CN113848255A - Detection apparatus for pillar porcelain insulator - Google Patents
Detection apparatus for pillar porcelain insulator Download PDFInfo
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- CN113848255A CN113848255A CN202111107192.2A CN202111107192A CN113848255A CN 113848255 A CN113848255 A CN 113848255A CN 202111107192 A CN202111107192 A CN 202111107192A CN 113848255 A CN113848255 A CN 113848255A
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- porcelain insulator
- post porcelain
- post
- rotating ring
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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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
- G01N29/04—Analysing solids
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The application provides a detection device for post porcelain insulator, includes: the rotating mechanism comprises a motor, a transmission mechanism and a rotating ring, and when the rotating ring is sleeved on the post porcelain insulator, the motor drives the rotating ring to rotate along the circumferential direction of the post insulator through the transmission mechanism; the creeping wave probe is arranged on the rotating ring and is used for rotatably detecting the surface defects of the post porcelain insulator; the phased array probe is arranged on the rotating ring and used for rotatably detecting the internal defects of the post porcelain insulator; and the positioner is arranged on the rotating ring and is used for recording the displacement of the ultrasonic probe. This application can high-efficient detect pillar porcelain insulator's defect.
Description
Technical Field
The application relates to the field of power equipment detection, in particular to a detection device for a post porcelain insulator.
Background
The post porcelain insulator is an important part for ensuring the safe operation of electrical equipment in a power grid. The installation, maintenance, overhaul and operation processes of the post porcelain insulator are easily influenced by severe environment or other factors. Once the post porcelain insulator is failed and broken, the operation safety of the power grid is endangered. Therefore, effective detection and quality evaluation of the in-service post porcelain insulator in the power grid are enhanced, and the method is of great importance for ensuring safe and reliable operation of the power grid.
At present, when the maintenance work of the post porcelain insulator is carried out on an engineering site, a maintainer manually scans a circle of flange port accessories of the post porcelain insulator circumferentially by using a creeping wave method to realize the detection of the defects of the surface and the near surface of a cementing area; and then manually scanning the sawtooth shape along the circumferential direction by changing a small-angle longitudinal wave probe to find the defects of the inner part, the symmetrical side surface and the near surface of the insulator.
However, the above method has the following disadvantages:
1) the method can complete the detection of the post porcelain insulator by two steps. Detecting the near-surface defects of the post porcelain insulator by using a creeping wave probe for the first time; and selecting the lower angle longitudinal wave probe with the corresponding curvature according to the diameter of the post porcelain insulator for the second time to detect. The method has the advantages of multiple detection steps, high operation difficulty, high error rate and low detection efficiency.
2) When the method adopts a fixed small-angle longitudinal wave oblique incidence method for detection, only the defects in the fixed range of the incidence point of the probe can be detected, and the detection coverage range is small. If the whole pillar porcelain insulator needs to be detected, the probe needs to be used for detecting in the transverse direction and the longitudinal direction respectively, and the detection efficiency is low.
3) The method needs manual work, and the manual detection is very challenging to the technical level of a detector. For example, factors such as the adhesion degree of the probe and the insulator, the dosage of the coupling agent and the like influence the detection result, so that the detection result has no reproducibility, and the result verification is influenced.
Disclosure of Invention
To the problem among the prior art, this application provides a detection device of post porcelain insulator, can detect the defect of post porcelain insulator.
In order to solve the technical problem, the application provides the following technical scheme:
the application provides a detection device for post porcelain insulator, includes:
the rotating mechanism comprises a motor, a transmission mechanism and a rotating ring, and when the rotating ring is sleeved on the post porcelain insulator, the motor drives the rotating ring to rotate along the circumferential direction of the post insulator through the transmission mechanism;
the creeping wave probe is arranged on the rotating ring and is used for rotatably detecting the surface defects of the post porcelain insulator;
the phased array probe is arranged on the rotating ring and used for rotatably detecting the internal defects of the post porcelain insulator;
and the positioner is arranged on the rotating ring and is used for recording the displacement of the ultrasonic probe.
Further, the rotating ring comprises a chain and a locking mechanism for locking both ends of the chain.
Furthermore, the transmission mechanism is provided with a driving wheel and a plurality of driven wheels, the driving wheel drives the plurality of driven wheels to rotate through a conveyor belt under the driving of the motor, so as to drive the rotating ring to rotate along the circumferential direction of the post porcelain insulator.
Further, the creeping wave probe comprises a first ultrasonic vibration wafer for detecting the surface defect of the post porcelain insulator by emitting creeping waves.
Further, the phased array probe includes a second ultrasonic vibration wafer for detecting an internal defect of the post porcelain insulator by emitting ultrasonic waves covering a sector area.
Further, the positioner includes:
the grating disc is used for recording circumferential displacement optical signals of the ultrasonic probe on the post porcelain insulator;
and the photoelectric encoder is used for performing photoelectric conversion on the circumferential displacement optical signal and outputting a circumferential displacement electrical signal.
Further, the number of links constituting the chain rotating ring can be adjusted according to the diameter of the post porcelain insulator.
Further, the detection device for the post porcelain insulator further comprises: and the motor controller is used for controlling the forward rotation, the reverse rotation, the stop and the scanning speed regulation of the motor.
To the problem among the prior art, the detection device of pillar porcelain insulator that this application provided can carry out while automated inspection to the surface defect and the internal defect of pillar porcelain insulator, and the detection data has the continuity, and the reliability is high, and reproducibility is strong, and the follow-up maintenance analysis of being convenient for.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a detection device for post porcelain insulators in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a rotating mechanism in the embodiment of the present application;
FIG. 3 is a schematic diagram of a small angle longitudinal wave probe detection;
FIG. 4 is a schematic view of a sector scan of a phased array probe according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a positioner in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the present application provides a device for detecting post porcelain insulator, including: a rotating mechanism, a creeping wave probe 4, a phased array probe 5 and a positioner 6.
Wherein, rotary mechanism includes motor 1, drive mechanism 2 and rotatory ring 3, and when rotatory ring 3 suit was on post porcelain insulator, motor 1 passed through drive mechanism 2 drive rotatory ring 3 and rotated along post insulator circumference. That is to say, when the post porcelain insulator detection device provided by the present application is used to detect the defect of a post porcelain insulator, the rotating ring 3 of the post porcelain insulator detection device needs to be sleeved on the post porcelain insulator, and as the rotating ring 3 rotates along the circumferential direction of the post insulator, the creeping wave probe 4 mounted on the rotating ring 3 can rotate to detect the surface defect of the post porcelain insulator; the phased array probe 5 arranged on the rotating ring 3 can rotatably detect the internal defects of the post porcelain insulator; the positioner 6 mounted on the rotating ring 3 can record the displacement of the ultrasonic probe. Finally, the maintainer can determine the defects of the post porcelain insulator according to the detection signals output by the creeping wave probe 4 and the phased array probe 5 and the displacement signals output by the positioner 6.
In the case of detecting a post porcelain insulator, since the detection device of the post porcelain insulator needs to be fitted and locked to the post porcelain insulator, the rotating ring 3 includes a chain and a locking mechanism 7 for locking both ends of the chain, as shown in fig. 1. When using this post porcelain insulator detection device to detect, locking mechanism 7 need be with chain head and the tail both ends locking, can loosen when not detecting to take off this post porcelain insulator's detection device from post porcelain insulator.
In one embodiment, referring to fig. 1 and 2, the transmission mechanism has a driving wheel 8 and a plurality of driven wheels 9, the driving wheel 8 is driven by the motor 1 to drive the plurality of driven wheels 9 to rotate through the conveyor belt 10, so as to drive the rotating ring 3 to rotate along the circumferential direction of the post porcelain insulator. That is, the driven wheel 9 can form a rolling friction force on the surface of the post insulator to be detected, and the rolling friction force can rotate the rotating ring 3 in the circumferential direction of the post insulator.
In one embodiment, the creeping wave probe 4 may be fixed to the rotating ring 3 by a probe mounting frame provided on the rotating ring 3. The creeping wave probe 4 comprises an ultrasonic vibration wafer which can emit creeping waves to detect surface defects of the post porcelain insulator.
In one embodiment, the phased array probe 5 may be fixed to the rotating ring 3 by a probe mounting frame provided on the rotating ring 3. The phased array probe 5 includes an ultrasonic vibration wafer that can emit ultrasonic waves to detect internal defects of the post porcelain insulator, the ultrasonic waves covering a sector area.
It should be noted that, in the conventional small-angle longitudinal wave detection, the internal defect of the insulator is detected at a fixed angle, the detection range is limited to a specific angle range from the probe as the center to the inside of the insulator, and the detection range is beyond the specific angle range, which is shown in fig. 3. The probes shown in FIG. 3 include, but are not limited to, sheds 13, small angle longitudinal wave probes 14, and flanged cast iron 15. The phased array detection technology can control sound waves by controlling the excitation time of different wafers, form fan-shaped beams and influence to form and control ultrasonic waves. Therefore, the phased array probe can carry out sector scanning on the detection target, the scanning coverage is greatly improved compared with the detection of small-angle longitudinal waves with fixed angles, and the schematic diagram is shown in figure 4. The probes shown in FIG. 4 include, but are not limited to, sheds 16, phased array probes 17, and flanged cast iron 18.
In one embodiment, the positioner 6 comprises: a grating disk 11 and a photoelectric encoder 12.
The grating disc 11 is used for recording circumferential displacement optical signals of the ultrasonic probe on the post porcelain insulator; the photoelectric encoder 12 is configured to perform photoelectric conversion on the circumferential displacement optical signal and output a circumferential displacement electrical signal.
Structural schematic of the positioner 6 as can be seen in fig. 5, the positioner 6 can be fixed to the rotating ring 3 by a positioner mounting frame provided on the rotating ring 3. The main function is to record the positions of the column porcelain insulators with defects when the creeping wave probe 4 and the phased array probe 5 scan the column porcelain insulators in the circumferential direction. The grating disk can be divided into two types according to the direction of the grid line engraving: one is a radial grating, and the extension lines of the grid lines of the radial grating all pass through the circle center of the grating disc; the other is a tangential grating, where all the grating lines are tangent to a small circle concentric with the grating disk, with a diameter of only a few tenths of a millimeter or a few millimeters. The grating disk 11 rotates coaxially with the rotating ring 3 at the same speed, and can record the circumferential displacement information of the rotating ring 3. The photoelectric encoder 12 is a sensor that converts a mechanical geometric displacement amount on an output shaft into a pulse or a digital amount by photoelectric conversion. The grating disc 11 is coaxial with the motor of the photoelectric encoder 12, when the motor rotates, the grating disc 11 and the motor rotate at the same speed, a plurality of pulse signals can be output, and the displacement information of the detection device of the post porcelain insulator can be obtained through the displacement information of the pulse signal sound path encoder.
In one embodiment, the number of links of the chain constituting the rotating ring 3 can be adjusted according to the diameter of the post porcelain insulator, which is not limited in the present application.
In one embodiment, the device for detecting post porcelain insulator further comprises: and the motor controller is used for controlling the forward rotation, the reverse rotation, the stop and the scanning speed adjustment of the motor.
The motor controller can realize the speed regulation and the start and stop of the motor by regulating the current of the motor; the rotation direction of the motor can be adjusted by adjusting the current direction of the motor, so that forward rotation and reverse rotation are realized.
When using the pillar porcelain insulator detection device that this application provided to detect, can go on according to following step:
1) installing the post porcelain insulator detection device: the creeping wave probe 4 and the phased array probe 5 are respectively installed on the post porcelain insulator detection device. The external diameter of measuring pillar porcelain insulator selects the rectangular bag of suitable length to constitute and rotates ring 3. With this post porcelain insulator detection device's rotatory ring 3 around on post porcelain insulator, it is good to lock with locking mechanism 7 to guarantee that creeping wave probe 4 and phased array probe 5 and post porcelain insulator's surface in close contact with, and guarantee that locator 6 can smoothly accomplish the circumferential displacement.
2) Starting the post porcelain insulator detection device: if under the drive of motor 1, this pillar porcelain insulator detection device can the ring sweep look into pillar porcelain insulator, then can start normal detection.
3) And (3) detection: smearing coupling agent, adjusting the initial position of the positioner 6, connecting signal receiving and processing instruments matched with the creeping wave probe 4 and the phased array probe 5 respectively, starting the rotating mechanism, and starting the motor 1 to start annular scanning. The one-time detection of the surface, the near surface and the internal defects of the support porcelain insulator can be realized by rotating one circle along the circumferential direction of the support porcelain insulator, and the detection efficiency is greatly improved compared with the existing detection device.
As can be seen from the foregoing embodiments, the technical key points of the present application are:
1. the phased array probe replaces a small-angle longitudinal wave probe, and the detection range is wider in coverage.
2. Through installing creeping wave probe and phased array probe simultaneously on same detection device, can realize once only accomplishing the detection that needs twice operations to accomplish traditionally, improved detection efficiency greatly. The device provided by the application is used for detecting, so that the unreliability of the detection result caused by the difference of the artificial operation level can be avoided.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiment of the method implemented by the device, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to part of the description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (8)
1. The utility model provides a detection apparatus for post porcelain insulator which characterized in that includes:
the rotating mechanism comprises a motor, a transmission mechanism and a rotating ring, and when the rotating ring is sleeved on the post porcelain insulator, the motor drives the rotating ring to rotate along the circumferential direction of the post insulator through the transmission mechanism;
the creeping wave probe is arranged on the rotating ring and is used for rotatably detecting the surface defects of the post porcelain insulator;
the phased array probe is arranged on the rotating ring and used for rotatably detecting the internal defects of the post porcelain insulator;
and the positioner is arranged on the rotating ring and is used for recording the displacement of the ultrasonic probe.
2. The post porcelain insulator detection device of claim 1, wherein the rotating ring comprises a chain and a locking mechanism for locking both ends of the chain.
3. The device for detecting post porcelain insulators according to claim 1, wherein the transmission mechanism has a driving wheel and a plurality of driven wheels, the driving wheel is driven by the motor to rotate the plurality of driven wheels through a transmission belt, so as to drive the rotating ring to rotate along the circumferential direction of the post porcelain insulator.
4. The post porcelain insulator testing device according to claim 1, wherein said creeping wave probe comprises a first ultrasonic vibration wafer for detecting surface defects of said post porcelain insulator by emitting creeping waves.
5. The post porcelain insulator testing apparatus of claim 1, wherein the phased array probe comprises a second ultrasonic vibration wafer for testing for internal defects of the post porcelain insulator by transmitting ultrasonic waves covering a sector area.
6. The post porcelain insulator testing apparatus of claim 2, wherein the positioner comprises:
the grating disc is used for recording circumferential displacement optical signals of the ultrasonic probe on the post porcelain insulator;
and the photoelectric encoder is used for performing photoelectric conversion on the circumferential displacement optical signal and outputting a circumferential displacement electrical signal.
7. The apparatus for detecting post porcelain insulator according to claim 1, wherein the number of links constituting the chain rotation ring is adjustable according to the diameter of the post porcelain insulator.
8. The apparatus for detecting post porcelain insulator of claim 1, further comprising: and the motor controller is used for controlling the forward rotation, the reverse rotation, the stop and the scanning speed regulation of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107192.2A CN113848255A (en) | 2021-09-22 | 2021-09-22 | Detection apparatus for pillar porcelain insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107192.2A CN113848255A (en) | 2021-09-22 | 2021-09-22 | Detection apparatus for pillar porcelain insulator |
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| Publication Number | Publication Date |
|---|---|
| CN113848255A true CN113848255A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111107192.2A Pending CN113848255A (en) | 2021-09-22 | 2021-09-22 | Detection apparatus for pillar porcelain insulator |
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| CN (1) | CN113848255A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128605A (en) * | 2010-01-15 | 2011-07-20 | 华北电力科学研究院有限责任公司 | Insulator scanning device and system |
| CN104034799A (en) * | 2014-03-18 | 2014-09-10 | 国家电网公司 | Ultrasonic phased array detection method for strut porcelain insulator surface and near-surface defects |
| CN107589176A (en) * | 2017-10-31 | 2018-01-16 | 武汉泽旭科技有限公司 | A kind of detection method of insulator ultrasonic wave detecting system and the application system |
-
2021
- 2021-09-22 CN CN202111107192.2A patent/CN113848255A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128605A (en) * | 2010-01-15 | 2011-07-20 | 华北电力科学研究院有限责任公司 | Insulator scanning device and system |
| CN104034799A (en) * | 2014-03-18 | 2014-09-10 | 国家电网公司 | Ultrasonic phased array detection method for strut porcelain insulator surface and near-surface defects |
| CN107589176A (en) * | 2017-10-31 | 2018-01-16 | 武汉泽旭科技有限公司 | A kind of detection method of insulator ultrasonic wave detecting system and the application system |
Non-Patent Citations (1)
| Title |
|---|
| 张昕 等: "支柱瓷绝缘子表面缺陷振动声学法 检测的研究" * |
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