阅读说明：本技术 一种基于x射线对复合避雷器内部检测的检查方法及装置 (Inspection method and device for internal detection of composite lightning arrester based on X-ray ) 是由 张科 郭磊 原会静 董曼玲 丁国君 刘阳 张懂 耿成舟 白俊丽 张笑颜 于 2020-04-02 设计创作，主要内容包括：本申请公开了一种基于X射线对复合避雷器内部检测的检查装置及检测方法,能够有效地检测复合避雷器腔隙内是否存在气隙,保证避雷器注胶工艺效果,从而有效判断避雷器是否存在内部缺陷。用于检测复合避雷器内部缺陷的X射线成像装置包括射线源,图像采集器,数据转换装置,数据传输、计算机图像处理和信息处理。具有结构简单、安全性好、传输速率快、图像清晰。对检测避雷器注胶情况直接有效,能够及早发现复合避雷器制造阶段的隐患和缺陷,具有良好的实际应用价值和市场前景。(The application discloses inspection device and detection method to compound arrester internal detection based on X ray can detect effectively whether there is the air gap in compound arrester lacuna, guarantees arrester injecting glue technology effect to effectively judge whether there is internal defect in the arrester. The X-ray imaging device for detecting the internal defects of the composite lightning arrester comprises a ray source, an image collector, a data conversion device, data transmission, computer image processing and information processing. The device has the advantages of simple structure, good safety, high transmission rate and clear image. The method is directly and effectively used for detecting the glue injection condition of the lightning arrester, can discover hidden dangers and defects of the composite lightning arrester in the manufacturing stage as soon as possible, and has good practical application value and market prospect.)

1. An inspection method for detecting the interior of a composite arrester based on X-rays is characterized by comprising the following steps:

step 1, irradiating a lightning arrester by using X-rays;

step 2, collecting an image formed by the lightning arrester after the X-ray irradiation by using an image collector;

step 3, converting the image collected by the image collector into a digital signal and transmitting the digital signal to a computer;

and 4, restoring the detected image on a display.

2. The method for inspecting the interior of a composite arrester based on X-rays according to claim 1, wherein in step 2, a hard flat panel detector is used to receive X-rays.

3. The method as claimed in claim 2, wherein in step 3, the crystal circuit covered on the flat panel detector directly converts the X-ray photon into digital current.

4. The method for inspecting the internal detection of the composite lightning arrester based on the X-ray according to the claim 3, characterized in that in the step 3, the digital signal of the image collector is transmitted to the computer by adopting optical fiber transmission.

5. The method for inspecting the internal detection of the composite lightning arrester based on the X-ray according to the claim 4, characterized in that in the step 3, the target optical fiber sensor is used for detecting the relevant data of the target object during the optical fiber transmission process, the intermediate sensor is used for detecting the data loss condition during the optical fiber data transmission process, and the information is transmitted to the terminal monitoring device in time.

6. The method for inspecting the internal detection of the composite lightning arrester based on the X-ray according to the claim 5, wherein in the step 3, an anti-interference shielding transmission box body is further arranged in the optical fiber transmission process to shield external interference signals in the optical fiber transmission process.

7. The method for inspecting the interior of a composite arrester based on X-rays according to any one of claims 1-6, characterized in that in step 4, the result of the inspection is determined by a computer program.

8. The method for inspecting the interior of a composite arrester based on X-rays according to any one of claims 1-7, characterized in that in step 1, the arrester is rotated 360 degrees.

9. The inspection method for the internal detection of the composite arrester based on the X-ray according to any one of claims 1 to 8, wherein in the step 1, the X-ray is generated by using a portable X-ray machine.

10. An inspection device for internal inspection of a composite arrester based on X-rays, comprising:

the ray source is used for providing X rays to irradiate the lightning arrester;

the image collector is arranged on an irradiation path of the ray source and used for receiving imaging of the lightning arrester under the irradiation of the X-ray;

the data conversion device is connected with the image collector and is used for converting the X-ray into a digital signal;

the optical fiber transmission system is connected with the data conversion device and is used for transmitting digital signals;

and the data imaging and analyzing system is connected with the optical fiber transmission system and can restore the received digital signals on a display in the form of images through a computer image processing technology and an information processing technology.

Technical Field

The application relates to the technical field of internal detection of composite arresters, in particular to glue injection process detection of a composite arrester.

Background

The lightning arrester is one of important devices for ensuring the safe operation of a power system. The lightning arrester is affected with damp and is a common defect in operating the lightning arrester, and once the lightning arrester is affected with damp, the leakage current is increased, so that the lightning arrester is developed into a fault.

For the composite arrester, because the valve plate and the epoxy insulating cylinder are bonded through the sealant, when the glue injection process is improper, bubbles can be caused in the sealant, the assembled arrester cannot find the defects when a factory test is carried out, but after the arrester operates for a period of time, the bubbles in the sealant can be separated out and adsorbed on the surface of the valve plate, so that the valve plate is affected with damp. Therefore, whether bubbles exist in the composite arrester sealant or not is detected, and the method is an effective measure for finding the hidden danger of the arrester in an early stage.

However, the existing arrester manufacturers do not carry out effective detection on whether bubbles exist in the composite arrester sealant, and only guarantee that the bubbles are removed through vacuumizing in the glue injection process. If the vacuumizing time is not enough or the process is not complete, the hidden danger of bubbles exists in the sealant.

The detection by the X-ray DR technology is mostly used for detecting metal pipelines and insulators of power systems, and is not used for detecting the interior of a composite lightning arrester. When the insulator is detected by X-ray, the internal structure, defect type and position of the composite insulator, the diameter of the core rod with the thickness of the sheath and the like can be displayed on an obtained X-ray imaging picture.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the device and the method for detecting the inside of the composite arrester based on the X-rays are provided for solving the problem that the glue injection quality of the inside of the assembled arrester is difficult to detect in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an inspection method for detecting the interior of a composite arrester based on X-rays comprises the following steps:

step 1, irradiating a lightning arrester by using X-rays;

step 2, collecting an image formed by the lightning arrester after the X-ray irradiation by using an image collector;

step 3, converting the image collected by the image collector into a digital signal and transmitting the digital signal to a computer;

and 4, restoring the detected image on a display.

Preferably, in the inspection method for detecting the interior of the composite lightning arrester based on the X-ray, in step 2, a hard flat panel detector is used for receiving the X-ray.

Preferably, in the inspection method for the internal detection of the composite lightning arrester based on the X-ray, in step 3, the crystal circuit covered on the flat panel detector directly converts the X-ray photon into the digital current.

Preferably, in the inspection method for detecting the interior of the composite lightning arrester based on the X-ray, in step 3, the digital signal of the image collector is transmitted to the computer by adopting optical fiber transmission.

Preferably, in step 3, in the method for inspecting the internal detection of the composite lightning arrester based on the X-ray, the target optical fiber sensor is used to detect the related data of the target object during the optical fiber transmission process, the intermediate sensor is used to detect the data loss condition during the optical fiber data transmission process, and the information is transmitted to the terminal monitoring device in time.

Preferably, in the inspection method for detecting the inside of the composite lightning arrester based on the X-ray, in step 3, an anti-interference shielding transmission box body is further arranged in the optical fiber transmission process to shield external interference signals in the optical fiber transmission process.

Preferably, in the inspection method for detecting the interior of the composite lightning arrester based on the X-ray, step 4, the detection result is determined by applying a computer program.

Preferably, in the inspection method for detecting the inside of the composite lightning arrester based on the X-ray, in step 1, the lightning arrester is rotated by 360 degrees.

Preferably, in the inspection method for detecting the interior of the composite lightning arrester based on the X-ray, in step 1, a portable X-ray machine is used to generate the X-ray.

An inspection device for internal inspection of a composite arrester based on X-rays, comprising:

the ray source is used for providing X rays to irradiate the lightning arrester;

the image collector is arranged on an irradiation path of the ray source and used for receiving imaging of the lightning arrester under the irradiation of the X-ray;

the data conversion device is connected with the image collector and is used for converting the X-ray into a digital signal;

the optical fiber transmission system is connected with the data conversion device and is used for transmitting digital signals;

and the data imaging and analyzing system is connected with the optical fiber transmission system and can restore the received digital signals on a display in the form of images through a computer image processing technology and an information processing technology.

The invention has the beneficial effects that: the composite lightning arrester can be subjected to internal detection on the premise of not disassembling, the X-ray DR technology with higher efficiency is adopted to perform perspective detection on the composite lightning arrester, the internal structure visual diagram of the composite lightning arrester at any detection position is quickly obtained, and personnel engaged in detection can perform field detection only by remote operation and diagnose the defects of the lightning arrester according to the X-ray imaging diagram. The lightning arrester detection device has the advantages of high detection efficiency, good safety, high transmission rate and low power consumption, can quickly find the hidden danger and defects of the composite lightning arrester, and can ensure the safe and reliable operation of the lightning arrester.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

Fig. 1 is a flowchart of a composite arrester detection processing flow of the present embodiment;

fig. 2A is a front view of an example of the arrester in the composite arrester detecting apparatus of the present embodiment;

fig. 2B is a plan view of an example of the arrester in the composite arrester detecting apparatus of the present embodiment;

fig. 2C is a partially enlarged view of an example of the arrester in the composite arrester detecting apparatus of the present embodiment.

The reference numbers in the figures are:

1, a lightning arrester valve plate group; 2, a gap is formed between the valve plate and the epoxy insulating cylinder; 3, epoxy insulating cylinder; 4, compounding an insulating outer sleeve; 5 injecting air bubbles at the glue position.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.