A dual path push type spark gap zero detector
Patent Information
- Application Number
- CN202610610385.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-06
- Publication Date
- 2026-08-18
AI Technical Summary
[0004]本发明的目的在于，现有火花间隙测零装置存在的人工劳动强度高、测量位置易偏移导致误差，以及仅能单路检测存在局限性的缺陷，提供设计一种双路推动式火花间隙检零装置，以解决上述技术问题
[0019]通过以上技术方案可以看出，本发明相对现有技术的有益效果为：首先，采用电动驱动装置配合绝缘伸缩杆实现自动伸缩，带动零值检测部件沿绝缘子串稳定滚动前进，将传统人工反复抬杆的费力操作转变为电动推动式测量，降低了作业人员的劳动强度，缩短了单基杆塔的检测时间，提升了带电作业的安全性与工作效率。其次，由圆形绝缘支撑板、环形绝缘支撑板、测量金属导体条及测量绝缘支撑条经螺栓固定构成的刚性框架结构，增强了整体机械稳定性，避免了传统探针易形变、连接头易旋转的技术缺陷；配合绝缘螺纹调距撑杆，可灵活调节并锁定测量间距，确保检测位置的一致性与可靠性。此外，测量金属导体条与火花间隙电极模板中弧形金属条的弹性压紧接触结构，形成了稳定、低阻抗的电气连接路径，从原理上消除了虚测、误测的隐患；火花间隙电极模板采用模块化可更换设计，能够依据待测绝缘子的不同电压等级快速选配对应规格的电极模板，无需借助专用工具即可完成现场更换，提升了装置的通用性与场景适应能力。最后，差速传动器能够在两路检测部件因绝缘子安装偏差或运行受力不同而产生转速差异时，自动调节输出转速，保证两路零值检测部件始终同步滚动，避免了因不同步导致的卡滞或漏测现象，实现了双路绝缘子零值的高效、平稳、同步检测，提升了检测结果的准确性与现场适应性，能够适用于耐张塔双串绝缘子的快速带电检测作业。
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Figure CN122591996A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power system testing equipment technology, and in particular to a dual-path push-type spark gap zero detection device. Background Technology
[0002] Zero-value insulator testing is a crucial routine inspection task during live-line operations of transmission lines. Spark gap zero-value measuring devices are currently the most commonly used zero-value measuring tools for inspecting the operating status of insulators on transmission lines. They have advantages such as simple structure, lightweight design, and durability, but they also have the following drawbacks: 1. When zeroing is performed using the ground potential method, the spark gap structure is installed on the top of the insulating operating rod of the corresponding voltage level. The operator needs to climb the tower to the edge of the crossarm, use his body as a fulcrum, and hold the end of the operating rod to repeatedly lift and lower it to complete the test. It is a labor-intensive lever structure with relatively high labor intensity, long time, and high risk factor. 2. The metal probes in contact with the insulators of traditional spark gap zero-measuring devices are prone to deformation, and the connectors are prone to rotation around the insulating rod as an axis. Moreover, the rotation angle is different for each tower, and the measurement position cannot be fixed, which can easily lead to false or incorrect contact measurements and measurement errors. Third, traditional spark gap zero-detection devices can only detect one porcelain insulator at a time, and cannot detect multiple insulators at the same time, which has certain limitations.
[0003] In view of this, it is very necessary to provide a dual-path push-type spark gap zero detection device to solve the above-mentioned defects in the prior art. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing spark gap zero-detection devices, such as high manual labor intensity, easy deviation of measurement position leading to errors, and limitations of only being able to detect in a single channel. This invention provides a dual-channel push-type spark gap zero-detection device to solve the above-mentioned technical problems.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is a dual-path push-type spark gap zero detection device, comprising a first zero-value detection component, a second zero-value detection component, a first mandrel insulating tube, a second mandrel insulating tube, a differential transmission, an insulating telescopic rod, and an electric drive device; the differential transmission has two power output ends, the first path connecting to the first zero-value detection component through the first mandrel insulating tube, and the second path connecting to the second zero-value detection component through the second mandrel insulating tube; the input end of the differential transmission is connected to the first end of the insulating telescopic rod; the second end of the insulating telescopic rod is connected to the electric drive device; both the first and second zero-value detection components are equipped with spark gap electrode templates corresponding to the voltage level of the insulator being measured; the second zero-value detection component and the first zero-value detection component are symmetrical about the differential transmission and have completely identical structures.
[0006] As a preferred implementation of a dual-path push-type spark gap zero detection device, the first zero-value detection component includes a circular insulating support plate, a measuring metal conductor strip, a measuring insulating support strip, an annular insulating support plate, an insulating threaded adjustable strut, and a spark gap electrode template. The circular insulating support plate and the annular insulating support plate are coaxially arranged. The first end of the measuring metal conductor strip is bolted to the edge of the circular insulating support plate at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate at a fixed angle and locked. The first end of the measuring insulating support strip is bolted to the edge of the circular insulating support plate at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate at a fixed angle and locked. The spark gap electrode template is embedded in the center of the annular insulating support plate. The first end of the insulating threaded adjustable strut is connected and locked to the center of the circular insulating support plate through a threaded structure, and the second end of the insulating threaded adjustable strut passes through the center of the annular insulating support plate and the center of the spark gap electrode template and is connected to the first mandrel insulating tube.
[0007] As a preferred implementation of a dual-path push-type spark gap zero-value detection device, the second zero-value detection component includes a circular insulating support plate, a measuring metal conductor strip, a measuring insulating support strip, an annular insulating support plate, an insulating threaded adjustable strut, and a spark gap electrode template. The circular insulating support plate and the annular insulating support plate are coaxially arranged. The first end of the measuring metal conductor strip is bolted to the edge of the circular insulating support plate at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate at a fixed angle and locked. The first end of the measuring insulating support strip is bolted to the edge of the circular insulating support plate at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate at a fixed angle and locked. The spark gap electrode template is embedded in the center of the annular insulating support plate. The first end of the insulating threaded adjustable strut is connected and locked to the center of the circular insulating support plate through a threaded structure, and the second end of the insulating threaded adjustable strut passes through the center of the annular insulating support plate and the center of the spark gap electrode template and is connected to the second mandrel insulating tube.
[0008] As a preferred implementation of a dual-path push-type spark gap zero detection device, multiple measuring metal conductor strips and multiple measuring insulating support strips are arranged alternately at equal angular intervals along the circumference of the annular insulating support plate. The multiple measuring metal conductor strips form an outer circle, and the multiple measuring insulating support strips form an inner circle. The measuring insulating support strips are fixed on the annular insulating support plate, which plays the role of insulating support and bearing force. The first end of the measuring metal conductor strip passes through the annular insulating support plate and is firmly fixed, and the second end is in close contact with the arc-shaped metal strip in the spark gap electrode template to form an electrical conductor connection.
[0009] As a preferred implementation of a dual-path push-type spark gap zero detection device, the spark gap electrode template includes multiple arc-shaped metal strips, which are arranged in a clockwise direction with the center of the cross-section of the insulating threaded pitch support rod as the center; each arc-shaped metal strip has a groove in the middle, and the number of measuring metal conductor strips is the same as the number of arc-shaped metal strips.
[0010] As a preferred implementation of a dual-path push-type spark gap zero detection device, the circular insulating support plate has a circular structure with a through hole in the center for the insulating threaded adjustable support rod to pass through; the edge of the circular insulating support plate is provided with multiple bolt connection holes at equal intervals along the circumference, which are used to connect the first end of the measuring metal conductor strip and the measuring insulating support strip to the connection holes set on the edge of the circular insulating support plate by bolts.
[0011] As a preferred implementation of a dual-path push-type spark gap zero detection device, the first mandrel insulating tube and the second mandrel insulating tube are both tubes made of high-strength insulating material, and their interiors are provided with a torque transmission structure extending along the axial direction, which is used to transmit the rotational power output by the differential transmission to the first zero-value detection component and the second zero-value detection component.
[0012] As a preferred implementation of a dual-path push-type spark gap zero detection device, the differential transmission is a planetary gear differential, with its power input end connected to the insulating telescopic rod, the first power output end connected to the first mandrel insulating tube, and the second power output end connected to the second mandrel insulating tube. When the first zero-value detection component and the second zero-value detection component have different rotational resistances due to insulator installation deviation or running force during the detection process, the differential transmission automatically adjusts the two output speeds to ensure that the two zero-value detection components always keep synchronous rolling forward.
[0013] As a preferred implementation of a dual-path push-type spark gap zero detection device, the insulating telescopic rod is a multi-stage sleeve telescopic structure rod body, and its telescopic stroke is controlled by an electric drive device; guide keyways are provided between each stage of the insulating telescopic rod to prevent relative rotation and ensure effective torque transmission.
[0014] As a preferred implementation of a dual-path push-type spark gap zero detection device, the measuring metal conductor strip is a conductor strip made of elastic metal material, and its second end is provided with a bent part. The bent part forms an elastic pressing contact with the arc-shaped metal strip groove in the spark gap electrode template to ensure the reliability of the electrical connection.
[0015] As a preferred implementation of a dual-path push-type spark gap zero detection device, the spark gap electrode template is a replaceable modular structure. According to the different voltage levels of the insulator to be tested, various specifications of spark gap electrode templates are provided. In each specification of spark gap electrode template, the gap distance between adjacent arc-shaped metal strips matches the normal distributed voltage of the insulator under the corresponding voltage level.
[0016] As a preferred implementation of a dual-path push-type spark gap zero detection device, the first end of the insulating telescopic rod is connected to the input end of the differential transmission via a plug-in connector and is equipped with a spring steel ball locking mechanism to achieve automatic locking during insertion and removal; the second end of the insulating telescopic rod is connected to the electric drive device via a plug-in connector and is also equipped with a spring steel ball locking mechanism to achieve automatic locking during insertion and removal; the plug-in connector connection specifically involves a quick-connect connector between the second end of the insulating telescopic rod and the electric drive device, the quick-connect connector having built-in electrical contacts, which automatically connect when the insulating telescopic rod is plugged into the electric drive device, achieving synchronous connection of power supply and control signals.
[0017] As a preferred implementation of a dual-path push-type spark gap zero detection device, the electric drive device includes a DC motor, a reduction mechanism, and a rechargeable battery pack. The DC motor is connected to the second end of the insulating telescopic rod through the reduction mechanism. A control switch is provided on the housing of the electric drive device for controlling the extension, retraction, and stopping of the insulating telescopic rod.
[0018] As a preferred implementation of a dual-path push-type spark gap zero detection device, the measuring insulating support strip is a support strip made of high-strength engineering plastic. Its two ends are fixedly connected to a circular insulating support plate and an annular insulating support plate, respectively. It is used to withstand the axial pressure exerted by the insulator sheet on the first zero-value detection component and the second zero-value detection component during the detection process, and plays a dual role of structural support and insulation isolation.
[0019] As can be seen from the above technical solutions, the beneficial effects of this invention compared to the prior art are as follows: First, the use of an electric drive device in conjunction with an insulating telescopic rod enables automatic extension and retraction, driving the zero-value detection component to roll steadily forward along the insulator string. This transforms the laborious operation of repeatedly lifting the rod manually into an electrically driven measurement, reducing the labor intensity of operators, shortening the detection time for a single tower, and improving the safety and efficiency of live-line work. Second, the rigid frame structure, consisting of a circular insulating support plate, an annular insulating support plate, a measuring metal conductor strip, and a measuring insulating support strip fixed by bolts, enhances the overall mechanical stability and avoids the technical defects of traditional probes being prone to deformation and connectors being prone to rotation. Combined with an insulating threaded adjustable support rod, the measurement spacing can be flexibly adjusted and locked, ensuring the consistency and reliability of the detection position. Furthermore, the elastic compression contact structure between the measuring metal conductor strip and the arc-shaped metal strip in the spark gap electrode template forms a stable, low-impedance electrical connection path, fundamentally eliminating the risk of false or incorrect measurements. The spark gap electrode template adopts a modular and replaceable design, allowing for quick selection of the corresponding specification electrode template based on the different voltage levels of the insulator under test. On-site replacement can be completed without the need for special tools, improving the device's versatility and adaptability to various scenarios. Finally, the differential drive automatically adjusts the output speed when the two detection components experience speed differences due to insulator installation deviations or varying operating forces, ensuring that the two zero-value detection components always roll synchronously. This avoids jamming or missed measurements caused by asynchrony, achieving efficient, stable, and synchronous detection of zero values for dual-channel insulators. This improves the accuracy of the test results and on-site adaptability, making it suitable for rapid live-line testing of double-string insulators on tension towers.
[0020] Furthermore, the design principle of this invention is reliable, the structure is simple, and it has a very wide range of application prospects.
[0021] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a dual-path push-type spark gap zero detection device of the present invention.
[0024] Figure 2 This is a schematic diagram of the zero-value detection component of the present invention.
[0025] Figure 3 This is a schematic diagram of the structure of the annular insulating support plate of the present invention.
[0026] Figure 4 This is a schematic diagram of the structure of the circular insulating support plate of the present invention.
[0027] Explanation of key figure labels: 101. First zero-value detection component; 102. Second zero-value detection component; 201. First mandrel insulating tube; 202. Second mandrel insulating tube; 3. Differential transmission; 4. Insulated telescopic rod; 5. Electric drive device; 6. Circular insulating support plate; 7. Measuring metal conductor strip; 8. Measuring insulating support strip; 9. Annular insulating support plate; 10. Insulated threaded adjustable strut; 11. Spark gap electrode template. Detailed Implementation
[0028] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0029] like Figure 1 As shown, the technical problem to be solved by the present invention is to address the deficiencies of the existing technology by providing a dual-path push-type spark gap zero detection device, including a first zero-value detection component 101, a second zero-value detection component 102, a first mandrel insulating tube 201, a second mandrel insulating tube 202, a differential transmission 3, an insulating telescopic rod 4, and an electric drive device 5; the power output end of the differential transmission 3 has two paths, the first path is connected to the first zero-value detection component 101 through the first mandrel insulating tube 201, and the second path is connected to the second zero-value detection component 102 through the second mandrel insulating tube 202; the input end of the differential transmission 3 is connected to the first end of the insulating telescopic rod 4; the second end of the insulating telescopic rod 4 is connected to the electric drive device 5; spark gap electrode templates 11 corresponding to the voltage level of the insulator being measured are installed on both the first zero-value detection component 101 and the second zero-value detection component 102; the second zero-value detection component 102 and the first zero-value detection component 101 are symmetrical about the differential transmission 3 and have completely identical structures.
[0030] like Figure 2As shown, the first zero-value detection component 101 includes a circular insulating support plate 6, a measuring metal conductor strip 7, a measuring insulating support strip 8, an annular insulating support plate 9, an insulating threaded adjustable strut 10, and a spark gap electrode template 11. The circular insulating support plate 6 and the annular insulating support plate 9 are coaxially arranged. The first end of the measuring metal conductor strip 7 is bolted to the edge of the circular insulating support plate 6 at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate 9 at a fixed angle and locked. The first end of the measuring insulating support strip 8 is bolted to the edge of the circular insulating support plate 6 at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate 9 at a fixed angle and locked. The spark gap electrode template 11 is embedded in the center of the annular insulating support plate 9. The first end of the insulating threaded adjustable strut 10 is connected and locked to the center of the circular insulating support plate 6 through a threaded structure, and the second end of the insulating threaded adjustable strut 10 passes through the center of the spark gap electrode template 11 and is connected to the first mandrel insulating tube 201.
[0031] The second zero-value detection component 102 includes a circular insulating support plate 6, a measuring metal conductor strip 7, a measuring insulating support strip 8, an annular insulating support plate 9, an insulating threaded adjustable strut 10, and a spark gap electrode template 11. The circular insulating support plate 6 and the annular insulating support plate 9 are coaxially arranged. The first end of the measuring metal conductor strip 7 is bolted to the edge of the circular insulating support plate 6 at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate 9 at a fixed angle and locked. The first end of the measuring insulating support strip 8 is bolted to the edge of the circular insulating support plate 6 at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate 9 at a fixed angle and locked. The spark gap electrode template 11 is embedded in the center of the annular insulating support plate 9. The first end of the insulating threaded adjustable strut 10 is connected and locked to the center of the circular insulating support plate 6 through a threaded structure, and the second end of the insulating threaded adjustable strut 10 passes through the center of the spark gap electrode template 11 and is connected to the second mandrel insulating tube 202.
[0032] like Figure 3 As shown, four measuring metal conductor strips 7 and four measuring insulating support strips 8 are arranged alternately at 45° intervals along the circumference of the annular insulating support plate 9. The four measuring metal conductor strips 7 form an outer circle, and the four measuring insulating support strips 8 form an inner circle. The measuring insulating support strips 8 are fixed on the annular insulating support plate 9 and play the role of insulating support and bearing force. The first end of the measuring metal conductor strip 7 passes through the annular insulating support plate 9 and is firmly fixed. The second end is in close contact with the arc-shaped metal strip in the spark gap electrode template 11 to form an electrical conductor connection.
[0033] like Figure 3As shown, the spark gap electrode template 11 includes multiple arc-shaped metal strips, which are arranged in a clockwise direction with the center of the cross-section of the insulating threaded pitch support rod 10 as the center; each arc-shaped metal strip has a groove in the middle, and the number of measuring metal conductor strips 7 is the same as that of the arc-shaped metal strips.
[0034] like Figure 4 As shown, the circular insulating support plate 6 has a circular structure, and its center has a through hole for the insulating threaded adjustable support rod 10 to pass through; the edge of the circular insulating support plate 6 is provided with a plurality of bolt connection holes at equal intervals along the circumference, which are used to connect the first end of the measuring metal conductor strip 7 and the measuring insulating support strip 8 to the connection holes provided on the edge of the circular insulating support plate 6 by bolts.
[0035] Both the first and second mandrel insulating tubes are tubes made of high-strength insulating material, and their interiors are provided with a torque transmission structure extending axially, which is used to transmit the rotational power output by the differential transmission 3 to the first zero-value detection component and the second zero-value detection component.
[0036] The differential transmission 3 is a planetary gear type differential. Its power input end is connected to the insulating telescopic rod 4, the first power output end is connected to the first spindle insulating tube 201, and the second power output end is connected to the second spindle insulating tube 202. When the first zero-value detection component 101 and the second zero-value detection component 102 have different rotational resistances due to insulator installation deviation or running force during the detection process, the differential transmission 3 automatically adjusts the two output speeds to keep the two zero-value detection components rolling forward synchronously.
[0037] The insulating telescopic rod 4 is a multi-stage sleeve telescopic structure rod body, and its telescopic stroke is controlled by an electric drive device 5; guide keyways are provided between each stage of the sleeve of the insulating telescopic rod 4 to prevent relative rotation and ensure effective torque transmission.
[0038] The measuring metal conductor strip 7 is a conductor strip made of elastic metal material, and its second end is provided with a bent part. The bent part forms an elastic pressing contact with the arc-shaped metal strip groove in the spark gap electrode template 11 to ensure the reliability of the electrical connection.
[0039] The spark gap electrode template 11 is a replaceable modular structure. Depending on the voltage level of the insulator to be tested, various specifications of spark gap electrode templates 11 are provided. In each specification of spark gap electrode template 11, the gap distance between adjacent arc-shaped metal strips matches the normal distributed voltage of the insulator under the corresponding voltage level.
[0040] The first end of the insulating telescopic rod 4 is connected to the input end of the differential transmission 3 via a plug-in connector and is equipped with a spring steel ball locking mechanism to achieve automatic locking during insertion and removal. The second end of the insulating telescopic rod 4 is connected to the electric drive device 5 via a plug-in connector and is also equipped with a spring steel ball locking mechanism to achieve automatic locking during insertion and removal. Specifically, the plug-in connector is provided between the second end of the insulating telescopic rod 4 and the electric drive device 5. The quick-connect connector has built-in electrical contacts. When the insulating telescopic rod 4 is plugged into the electric drive device 5, the electrical contacts are automatically connected to achieve synchronous connection of power supply and control signals.
[0041] The electric drive device 5 includes a DC motor, a reduction mechanism, and a rechargeable battery pack. The DC motor is connected to the second end of the insulated telescopic rod 4 through the reduction mechanism. A control switch is provided on the housing of the electric drive device 5 to control the extension, retraction, and stopping of the insulated telescopic rod 4.
[0042] The measuring insulating support strip 8 is a support strip made of high-strength engineering plastic. Its two ends are fixedly connected to the circular insulating support plate 6 and the annular insulating support plate 9, respectively. It is used to withstand the axial pressure exerted by the insulator sheet on the zero-value detection component during the detection process, and plays a dual role of structural support and insulation isolation.
[0043] Based on the above description, and in conjunction with Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the specific working process of the dual-path push-type spark gap zero detection device mentioned in this embodiment is as follows: Step 1: Before performing zero-value detection, configure the device according to the voltage level of the insulator to be tested: Select the corresponding spark gap electrode template 11 according to the required voltage level of the insulator and install it on the annular insulating support plate 9; adjust the gap between two adjacent arc-shaped metal strips in the spark gap electrode template 11 to meet the spark gap requirements of the voltage level; adjust the insulating threaded adjustable support rod 10 of the measuring part to adjust the distance between the measuring metal conductor strip 7 and the measuring insulating support strip 8 to meet the spacing of each porcelain insulator for different voltage levels; Step 2: After completing the device configuration, start the test: Place the zero-value detection component on the crossarm side of the insulator to be tested. The operator holds the tail of the insulating telescopic rod 4, connects the power supply, and the electric drive device 5 extends at a constant speed along the two insulators through the insulating telescopic rod 4, driving the zero-value detection component to roll forward and detect the zero value of each insulator. When two adjacent measuring metal conductor strips 7 simultaneously contact the metal parts at both ends of the same insulator, the two measuring metal conductor strips 7 form an electrical connection through the arc-shaped metal strip in the spark gap electrode template 11, forming a discharge circuit. If the distributed voltage of the insulator is within the normal range, a breakdown discharge phenomenon will occur in the discharge circuit, emitting a "buzzing" sound accompanied by a flash. If the insulator has a zero value or a low value, its distributed voltage is insufficient to break down the spark gap, and no discharge phenomenon will occur.
[0044] In summary, compared with the prior art, this invention addresses the shortcomings of the prior art and provides the following beneficial effects: By using an electric drive device to automatically extend and retract the insulating telescopic rod, the zero-value detection component is driven to roll steadily forward along the insulator string, realizing push-type measurement. This transforms the laborious operation of repeatedly lifting the rod manually into an electric push-type measurement, reducing the labor intensity of operators, shortening the detection time for a single tower, and improving the safety and efficiency of live-line work. It solves the problems of high labor intensity, time-consuming and laborious operations, and high risk factor in the prior art. By setting up a rigid frame structure consisting of a circular insulating support plate, an annular insulating support plate, a measuring metal conductor strip, and a measuring insulating support strip fixed by bolts, the overall mechanical stability is enhanced, avoiding the problems of easy deformation of traditional metal probes and easy rotation of connectors. Through the cooperation of the insulated threaded adjustable support rod, the measurement spacing can be flexibly adjusted and locked, solving the problem of the measurement position being unable to be fixed. By fixing both ends of the measuring metal conductor strip and ensuring close contact with the arc-shaped metal groove of the spark gap electrode template, a stable, low-impedance electrical connection is formed, solving the problems of false and mis-measured contacts. The spark gap electrode template adopts a modular and replaceable design, allowing for quick selection of the corresponding electrode template based on the different voltage levels of the insulator under test. On-site replacement can be completed without the need for special tools, improving the versatility and adaptability of the device. Through the differential transmission, when the two detection components have different rotational speeds due to insulator installation deviations or different operating forces, the output speed is automatically adjusted, enabling the two zero-value detection components to adaptively adjust their rotational speed during measurement. This ensures that the two zero-value detection components always roll synchronously, solving the distance error problem caused by installation deviations or operating forces of the dual insulators. It also avoids jamming or missed detection due to asynchrony, achieving efficient, stable, and synchronous detection of zero values of dual insulators, improving the accuracy of the test results and on-site adaptability.
[0045] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0047] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.
Claims
1. A dual-path push-type spark gap zero-detection device, characterized in that, include: The system comprises a first zero-value detection component (101), a second zero-value detection component (102), a first mandrel insulating tube (201), a second mandrel insulating tube (202), a differential transmission (3), an insulating telescopic rod (4), and an electric drive device (5). The differential transmission (3) has two power outputs. The first output is connected to the first zero-value detection component (101) via the first mandrel insulating tube (201), and the second output is connected to the second zero-value detection component (102) via the second mandrel insulating tube (202). The input of the differential transmission (3) is connected to the first end of the insulating telescopic rod (4). The second end of the insulating telescopic rod (4) is connected to the electric drive device (5). Spark gap electrode templates (11) corresponding to the voltage level of the insulator are installed on both the first zero-value detection component (101) and the second zero-value detection component (102). The second zero-value detection component (102) and the first zero-value detection component (101) are symmetrical about the differential transmission (3).
2. The dual-path push-type spark gap zero-detection device according to claim 1, characterized in that, The first zero-value detection component (101) includes a circular insulating support plate (6), a measuring metal conductor strip (7), a measuring insulating support strip (8), an annular insulating support plate (9), an insulating threaded adjustable strut (10), and a spark gap electrode template (11); the circular insulating support plate (6) and the annular insulating support plate (9) are coaxially arranged; the first end of the measuring metal conductor strip (7) is bolted to the edge of the circular insulating support plate (6) at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate (9) at a fixed angle and locked; the measuring... The first end of the insulating support bar (8) is bolted to the edge of the circular insulating support plate (6) at a fixed angle and locked, and the second end is bolted to the edge of the annular insulating support plate (9) at a fixed angle and locked; the annular insulating support plate (9) is embedded with a spark gap electrode template (11); the first end of the insulating threaded adjustable strut (10) is connected to the center of the circular insulating support plate (6) in a threaded structure and locked, and the second end of the insulating threaded adjustable strut (10) passes through the center of the spark gap electrode template (11) and is connected to the first mandrel insulating tube (201).
3. The dual-path push-type spark gap zero-detection device according to claim 2, characterized in that, On the annular insulating support plate (9), there are multiple measuring metal conductor strips (7) and multiple measuring insulating support strips (8) arranged alternately at equal angles along the circumference. The multiple measuring metal conductor strips (7) form an outer circle, and the multiple measuring insulating support strips (8) form an inner circle.
4. The dual-path push-type spark gap zero-detection device according to claim 3, characterized in that, The spark gap electrode template (11) includes multiple arc-shaped metal strips, which are arranged in a clockwise direction with the center of the cross-section of the insulating threaded pitch support rod (10) as the center; each arc-shaped metal strip has a groove in the middle, and the number of measuring metal conductor strips (7) is the same as that of the arc-shaped metal strips.
5. The dual-path push-type spark gap zero-detection device according to claim 4, characterized in that, The circular insulating support plate (6) has a circular structure and a through hole in the center for the insulating threaded adjustable support rod (10) to pass through. Multiple connecting holes are evenly spaced along the edge of the circular insulating support plate (6). The first end of the measuring metal conductor strip (7) and the measuring insulating support strip (8) are connected to the connecting holes on the edge of the circular insulating support plate (6) by bolts.
6. The dual-path push-type spark gap zero-detection device according to claim 5, characterized in that, The differential transmission (3) is a planetary gear differential. Its power input end is connected to the insulating telescopic rod (4), the first power output end is connected to the first spindle insulating tube (201), and the second power output end is connected to the second spindle insulating tube (202). When the first zero value detection component (101) and the second zero value detection component (102) have different rotational resistances due to insulator installation deviation or running force during the detection process, the differential transmission (3) adjusts the two output speeds.
7. The dual-path push-type spark gap zero-detection device according to claim 6, characterized in that, The spark gap electrode template (11) is a replaceable modular structure. Depending on the voltage level of the insulator to be tested, there are various specifications of spark gap electrode templates (11). In each specification of spark gap electrode template (11), the gap distance between adjacent arc-shaped metal strips matches the normal distributed voltage of the insulator under the corresponding voltage level.
8. The dual-path push-type spark gap zero-detection device according to claim 7, characterized in that, The first end of the insulating telescopic rod (4) is connected to the input end of the differential transmission by a plug-in connector and is equipped with a spring steel ball locking mechanism; the second end of the insulating telescopic rod (4) is connected to the electric drive device (5) by a plug-in connector and is equipped with a spring steel ball locking mechanism; the plug-in connector connection is specifically as follows: a quick-connect connector is provided between the second end of the insulating telescopic rod (4) and the electric drive device (5), and the quick-connect connector has built-in electrical contacts. When the insulating telescopic rod (4) is plugged into the electric drive device (5), the electrical contacts are automatically connected.
9. The dual-path push-type spark gap zero-detection device according to claim 8, characterized in that, The measuring insulating support strip (8) is a support strip made of high-strength engineering plastic, and its two ends are fixedly connected to the circular insulating support plate (6) and the annular insulating support plate (9) respectively.
10. The dual-path push-type spark gap zero-detection device according to claim 9, characterized in that, The measuring metal conductor strip (7) is a conductor strip made of elastic metal material, and its second end is provided with a bend. The bend forms an elastic pressing contact with the arc-shaped metal strip groove in the spark gap electrode template (11).