WO2024087879A1 - 用于变压器监测的声音检测装置 - Google Patents

用于变压器监测的声音检测装置 Download PDF

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Publication number
WO2024087879A1
WO2024087879A1 PCT/CN2023/116234 CN2023116234W WO2024087879A1 WO 2024087879 A1 WO2024087879 A1 WO 2024087879A1 CN 2023116234 W CN2023116234 W CN 2023116234W WO 2024087879 A1 WO2024087879 A1 WO 2024087879A1
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Prior art keywords
fixed
detection device
plate
sound detection
transformer
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PCT/CN2023/116234
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English (en)
French (fr)
Inventor
田昊洋
彭伟
高凯
黄玉
王枭
袁国刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Rhythm Electronic Technology Co Ltd
State Grid Shanghai Electric Power Co Ltd
East China Power Test and Research Institute Co Ltd
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Shanghai Rhythm Electronic Technology Co Ltd
State Grid Shanghai Electric Power Co Ltd
East China Power Test and Research Institute Co Ltd
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Application filed by Shanghai Rhythm Electronic Technology Co Ltd, State Grid Shanghai Electric Power Co Ltd, East China Power Test and Research Institute Co Ltd filed Critical Shanghai Rhythm Electronic Technology Co Ltd
Priority to AU2023266318A priority Critical patent/AU2023266318B2/en
Publication of WO2024087879A1 publication Critical patent/WO2024087879A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the other groups of this subclass

Definitions

  • the present application relates to the technical field of sound detection, for example, to a sound detection device for transformer monitoring.
  • a transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). The main functions of a transformer are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. According to their uses, they can be divided into: power transformers and special transformers. Transformers are important equipment for transmission, transformation, and distribution of electricity, and are widely used in industry, agriculture, transportation, urban power supply, and other fields.
  • transformers are used in substations, usually multiple transformers are placed together.
  • multiple parameters of the transformer are monitored, such as voltage, current, oil chromatography, partial discharge, vibration, sound, etc.
  • Sound monitoring has gradually become a major monitoring method.
  • the current related technologies mostly place one sound detection device for one transformer. If multiple measurement points are to be monitored, multiple devices need to be installed, which causes a sharp increase in costs. It is also inconvenient to change the monitoring location during monitoring, and it is inconvenient to replace the detection equipment.
  • the present application provides a sound detection device for transformer monitoring to overcome the defects of the above-mentioned related technologies.
  • the embodiment of the present application provides a sound detection device for transformer monitoring, which is configured to perform multi-point monitoring of the transformer;
  • the sound detection device includes a mobile structure arranged on the top or side of the transformer;
  • the mobile structure includes a bottom plate;
  • two vertical plates are symmetrically fixed at both ends of the bottom plate;
  • a rack is fixed in the middle of the two vertical plates;
  • two cross bars are symmetrically fixed on both sides of the rack;
  • two moving blocks are symmetrically sleeved on the two cross bars;
  • an N-shaped plate is fixed on the top of the two moving blocks, and a connecting plate is fixed on the side of one of the two moving blocks;
  • a servo motor is installed on the connecting plate, and the servo motor is configured to drive the moving structure to move along the length direction of the rack;
  • a rotating structure is fixed on the top of the N-shaped plate;
  • three clamping Structure the three clamping structures are mounted with a sound processor, and a microphone is fixed to one end
  • FIG1 is a schematic diagram of the overall appearance structure of a sound detection device for transformer monitoring according to the present application.
  • FIG2 is a schematic diagram of the connection structure of the mobile structure, the rotating structure and the three clamping structures of the present application;
  • FIG3 is an enlarged schematic diagram of part A in FIG2 ;
  • FIG4 is a detailed schematic diagram of the rotating structure of the present application.
  • FIG. 5 is an overall schematic diagram of the clamping structure of the present application.
  • a sound detection device for transformer monitoring is configured to monitor a transformer 1; transformer reinforcement ribs 2 are installed on both sides of the outer surface of the transformer 1, and a plurality of bushings 3 are installed on the top of the transformer 1; the sound detection device includes a movable structure 4 arranged on the top or side of the transformer 1, and the movable structure 4 is configured to move on the surface of the transformer 1 to achieve integrated monitoring.
  • the mobile structure 4 includes a bottom plate 41; two vertical plates 42 are symmetrically fixed at both ends of the upper surface of the bottom plate 41; a rack 44 is installed in the middle of the two vertical plates 42; two cross bars 43 are symmetrically arranged on both sides of the rack 44; two moving blocks 45 are symmetrically installed on the two cross bars 43; an N-shaped plate 46 is fixedly installed on the top of the two moving blocks 45; a rotating structure 5 is fixedly installed on the top of the N-shaped plate 46; three clamping structures 6 are installed on the top of the rotating structure 5; the two moving blocks 45 are fixedly installed with an N-shaped plate 46; the rotating structure 5 is fixedly installed with three clamping structures 6; A connecting plate 47 is fixedly installed on one side of the outer surface of one of the blocks 45; two L-shaped positioning blocks 48 are symmetrically fixed on the top of the connecting plate 47; the tops of the two L-shaped positioning blocks 48 are fixedly connected together through a half wheel protection frame 49; a servo motor
  • the rotating structure 5 comprises a base 51; a driven rod 52 is fixedly sleeved in the middle of the base 51, and the bottom of the driven rod 52 can be connected to the base 51 through a bearing assembly, which can ensure that the driven rod 52 rotates on the base 51 while reducing the rotational friction between the driven rod 52 and the base 51; a circular plate 53 is fixedly sleeved on the top of the driven rod 52; a plurality of evenly distributed gear teeth 54 are fixedly installed on the outer surface of the circular plate 53; a plurality of evenly distributed positioning holes 55 are provided on the circular plate 53; a middle wheel 56 is fixedly sleeved on the top of the driven rod 52; the outer surface of the middle wheel 56 is fixedly installed with a triangular rotating plate 57; there are three triangular rotating plates 57, which are symmetrically fixed on the outer surface of the middle wheel 56; the top of each triangular rotating plate 57 is fixedly connected with a 611 is used for limiting the
  • the three clamping structures 6 are respectively fixed on the three triangular rotating plates 57;
  • the clamping structure 6 includes a vertical layer box 61 with an opening on one side;
  • a bidirectional threaded rod 68 is rotatably installed through the inner cavity of the vertical layer box 61, and a rotating handle 67 is fixedly installed at one end of the bidirectional threaded rod 68;
  • two clamping assemblies for clamping and fixing the sound processor 611 are slidably connected in the vertical layer box 61, and the two clamping assemblies are both threadedly sleeved on the outer side wall of the bidirectional threaded rod 68, and a rotating handle 67 is fixedly connected at one end of the bidirectional threaded rod 68;
  • the clamping assembly includes a slider 66 threadedly sleeved on the outer side wall of the bidirectional threaded rod 68, and the slider 66 is connected to an L-shaped clamping block 610 through a fixing bolt 69;
  • the working process of the device of the present application is as follows: first, when the transformer 1 is sound-detected, the reducer 411 drives the driving gear 412 to rotate by starting the servo motor 410. At this time, the driving gear 412 moves on the rack 44 to drive the moving structure 4 to move on the top of the transformer 1, so that the transformer 1 is monitored at different positions, thereby effectively maintaining the function of monitoring different positions of the transformer 1; then, the asynchronous motor 59 is turned on to drive the driving gear 511 to engage with the gear teeth 54 on the circular plate 53, thereby driving the driven rod 52 to rotate, and the rotation of the driven rod 52 drives the middle wheel 56 to rotate. At this time, the triangular rotating plate 57 can rotate slowly, so that it can cooperate with the sound processor 611 to perform multi-point sound detection at different positions;
  • the sound processor 611 When the sound processor 611 needs to be installed, the sound processor 611 is placed between the two L-shaped clamping blocks 610, and the groove on the shell of the sound processor 611 is sleeved on the outer wall of the positioning wheel 58.
  • the two-way threaded rod 68 is rotated by rotating the handle 67, and the two L-shaped clamping blocks 610 are driven to move relative to each other until the shell of the sound processor 611 is clamped.
  • the rotating handle 67 is rotated in the opposite direction to drive the two-way threaded rod 68 to rotate in the opposite direction, and the two L-shaped clamping blocks 610 are adjusted to move in opposite directions.
  • the sound processor 611 can be replaced in time, ensuring the function of testing a variety of transformers.
  • the present application adopts the design of the mobile structure 4.
  • the reducer 411 drives the driving gear 412 to rotate.
  • the mobile structure 4 is moved on the top or side of the transformer 1.
  • the sound detector installed on the mobile structure 4 also moves accordingly, thereby performing mobile monitoring of the transformer 1, effectively switching different positions of the transformer 1, and realizing integrated monitoring.
  • the present application adopts the design of the rotating structure 5, and drives the driving gear 511 by starting the asynchronous motor 59. Since the driving gear 511 is meshed with the gear teeth 54 on the circular plate 53, the intermittent rotation of the asynchronous motor 59 can drive the intermittent rotation of the driven rod 52, so that the middle wheel 56 can rotate intermittently. At this time, the triangular rotating plate 57 can rotate intermittently, and finally cooperate with the sound processor 611 to perform multi-point sound detection at different positions.
  • the bidirectional threaded rod 68 can be rotated by starting the rotating handle 67, and the two L-shaped clamping blocks 610 can be adjusted to move relative to each other until the shell of the sound processor 611 is clamped.
  • the rotating handle 67 is rotated in the opposite direction to drive the bidirectional threaded rod 68 to rotate in the opposite direction, and the two L-shaped clamping blocks 610 are adjusted to move in opposite directions.
  • the sound processor 611 can be replaced in time, which ensures the function of detecting various transformers and meets the demand for timely replacement of the sound processor 611.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

一种用于变压器监测的声音检测装置，设置为对变压器进行监测；所述的声音检测装置包括设在变压器顶部或侧面的移动结构；所述的移动结构包括底板；所述的底板两端对称固定有两个竖板；两个所述的竖板中间位置固定有齿条；所述的齿条两侧对称固定有两个横杆；两个所述的横杆对称套接有两个移动块；所述移动块的顶部固定有N型板，两个所述移动块的其中一个的侧面固定有连接板；所述的连接板上安装有伺服电机，伺服电机设置为驱动移动结构沿着齿条的长度方向移动。

Description

用于变压器监测的声音检测装置
本公开要求在2022年10月24日提交中国专利局、申请号为202211305725.2的中国专利的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及声音检测技术领域，例如涉及一种用于变压器监测的声音检测装置。
背景技术
变压器是指利用电磁感应的原理来改变交流电压的装置，其主要构件是初级线圈、次级线圈和铁芯(磁芯)。变压器的主要功能有：电压变换、电流变换、阻抗变换、隔离、稳压(磁饱和变压器)等，按用途可以分为：电力变压器和特殊变压器。变压器是输、变、配电的重要设备，广泛应用于工业、农业、交通、城市供电等领域。
目前，变压器在变电站使用时，通常为多台变压器放置一起，为掌握变压器的运行状态会对变压器进行多参数的监测，如电压、电流、油色谱、局部放电、振动、声音等，声音监测逐成为一种主要的监测手段。而目前相关技术多为一台变压器安放一台声音检测设备，如监测多个测点则需安装多台设备，从而造成成本急剧上升，且监测时不便于更改监测位置，以及不便更换检测设备。
发明内容
本申请提供一种用于变压器监测的声音检测装置，以克服上述相关技术存在的缺陷。
本申请实施例提供一种用于变压器监测的声音检测装置，设置为对变压器进行多点监测；所述的声音检测装置包括设在所述变压器顶部或侧面的移动结构；所述的移动结构包括底板；所述的底板两端对称固定有两个竖板；两个所述的竖板中间位置固定有齿条；所述的齿条两侧对称固定有两个横杆；两个所述的横杆对称套接有两个移动块；两个所述移动块的顶部固定有一N型板，两个所述移动块中的其中一个的侧面固定有连接板；所述的连接板上安装有伺服电机，所述伺服电机设置为驱动所述移动结构沿着所述齿条的长度方向移动；所述的N型板的顶部固定有旋转结构；所述的旋转结构上对称固定有三个夹持 结构；三个所述的夹持结构上均安装有声音处理器，所述的声音处理器的外表面一端固定有传声器。
附图说明
图1为本申请一种用于变压器监测的声音检测装置的整体外观结构示意图；
图2为本申请的移动结构、旋转结构和三个夹持结构的连接结构示意图；
图3为图2中A部分的放大示意图；
图4为本申请的旋转结构的细节示意图；
图5为本申请的夹持结构的整体示意图。
图中标号所示为：
1、变压器；2、变压器加强筋；3、套管；4、移动结构；41、底板；42、竖板；43、横杆；44、齿条；45、移动块；46、N型板；47、连接板；48、L型定位块；49、半轮保护架；410、伺服电机；411、减速器；412、驱动齿轮；413、垫板；5、旋转结构；51、底座；52、从动杆；53、圆板；54、轮齿；55、定位孔；56、中轮；57、三角转动板；58、定位轮；59、异步电机；510、保护垫；511、主动齿轮；6、夹持结构；61、立层盒；66、滑块；67、旋转把手；68、双向螺纹杆；69、固定螺栓；610、L型夹持块；611、声音处理器；612、传声器。
具体实施方式
下面结合附图和实施例对本申请进行说明。
实施例
如图1所示，一种用于变压器监测的声音检测装置，设置为对变压器1进行监测；所述的变压器1的外表面两侧均安装有变压器加强筋2，所述变压器1的顶部安装有多个套管3；所述的声音检测装置包括设在变压器1顶部或侧面的移动结构4，所述移动结构4设置为在变压器1表面移动，实现一体化监测。
如图2和3所示，所述的移动结构4包括底板41；所述的底板41的上表面两端对称固定有两个竖板42；两个所述的竖板42中间位置安装有齿条44；所述的齿条44的两边对称设置有两个横杆43；两个横杆43上对称安装有两个移动块45；两个所述的移动块45的顶部固定安装有一N型板46；所述的N型板46的顶部固定安装有旋转结构5；所述的旋转结构5顶部安装有三个夹持结构6；两个所述移动 块45中的其中一个的外表面一侧固定安装有连接板47；所述的连接板47的顶部对称固定有两个L型定位块48；两个所述的L型定位块48的顶部通过一个半轮保护架49固定连接在一起；所述的半轮保护架49的底部固定安装有位于连接板47顶部的伺服电机410；所述的伺服电机410的输出轴一端固定套接有减速器411；所述的减速器411的输出轴一端贯穿于其中一个所述移动块45并延伸至另一个所述移动块45的内部；所述的减速器411的输出轴上固定套接有驱动齿轮412；所述的驱动齿轮412的底部与齿条44啮合安装；其中，所述的齿条44为固定安放，通过驱动齿轮412与齿条44啮合，从而为N型板46的移动提供驱动力。当启动伺服电机410时，移动块45会沿着横杆43的长度方向进行移动，且移动块45的活动距离只会在两个竖板42之间。
如图4所示，所述的旋转结构5包括底座51；所述的底座51的中部固定套接有从动杆52，从动杆52的底部可以通过轴承组件与底座51连接，可以保证从动杆52在底座51上转动的同时减少从动杆52与底座51之间的转动摩擦力；所述的从动杆52的顶端固定套接有圆板53；所述的圆板53的外表面固定安装有均匀分布的多个轮齿54；所述的圆板53上设置有均匀分布的多个定位孔55；所述的从动杆52的顶端固定套接有中轮56；所述的中轮56的外表面与三角转动板57固定安装；所述的三角转动板57的数量为三个，分别对称固定在中轮56外表面；每个所述三角转动板57的顶部都固定连接有用于对声音处理器611进行限位的定位轮58，所述声音处理器611的壳体上设置有与定位轮58匹配设置的限位凹槽；所述的夹持结构6固定在三角转动板57的顶部；所述N型板46的外表面一侧固定有垫板413；所述垫板413的上表面固定有异步电机59，所述异步电机59通过联动组件与从动杆52连接；所述联动组件包括固定套接在异步电机59输出轴外侧壁上的主动齿轮511，所述从动杆52的外侧壁上固定套接有圆板53，所述圆板53的外侧壁设置有与主动齿轮511进行啮合的多个轮齿54，多个所述轮齿54均匀分布在圆板53的侧壁上；所述异步电机59的底部通过保护垫510分别与N型板46和垫板413的顶部连接。
如图5所示，三个所述的夹持结构6分别固定在三个所述三角转动板57上；所述的夹持结构6包括一侧开口的立层盒61；所述立层盒61的内腔贯穿转动安装有双向螺纹杆68，所述双向螺纹杆68的一端固定安装有旋转把手67，所述立层盒61内滑动连接有两个用于对声音处理器611进行夹持固定的夹持组件，且两个所述夹持组件均螺纹套接在双向螺纹杆68的外侧壁上，所述双向螺纹杆68的一端固定连接有旋转把手67；所述夹持组件包括螺纹套接在双向螺纹杆68外侧壁上的滑块66，所述滑块66通过固定螺栓69连接有L型夹持块610；两个所述的L型夹持块610设置为夹持固定声音处理器611；所述的声音处理器611的顶端固定安装有传声器612。
本申请的装置工作过程为：首先，在对变压器1进行声音检测时，通过伺服电机410的启动使得减速器411带动驱动齿轮412进行旋转，此时通过驱动齿轮412在齿条44上的运动，带动移动结构4在变压器1的顶部进行移动，从而对变压器1进行不同位置的监测，从而可以有效保持对变压器1不同位置的进行监测的作用；之后，通过开启异步电机59驱动主动齿轮511与圆板53上的轮齿54啮合，从而带动从动杆52转动，从动杆52转动带动中轮56进行旋转，此时三角转动板57可以进行缓慢旋转，从而配合声音处理器611在不同位置可以很好的进行多点位声音检测；
需要安装声音处理器611时，将声音处理器611放置在两个L型夹持块610之间，且保证声音处理器611的壳体上的凹槽套接在定位轮58的外侧壁上，通过旋转把手67带动双向螺纹杆68转动，带动两个L型夹持块610相对运动直至对声音处理器611壳体进行夹紧。当需要更换声音处理器611时，反向转动旋转把手67带动双向螺纹杆68反向转动，调节两个L型夹持块610往相反的方向运动即可，可以及时更换声音处理器611，保证了对多种变压器进行检测的作用。
与相关技术相比，本申请至少包括以下有益效果：
一、本申请通过移动结构4的设计，通过伺服电机410的启动使得减速器411带动驱动齿轮412进行旋转，通过驱动齿轮412在齿条44上的运动，实现移动结构4在变压器1的顶部或侧面进行移动，安装在移动结构4上的声音检测器也相应的移动，从而对变压器1进行移动监测，有效对变压器1的不同位置进行转换位置，实现一体化监测。
二、本申请通过旋转结构5的设计，通过异步电机59的启动带动主动齿轮511，由于主动齿轮511与圆板53上的轮齿54啮合，因此，异步电机59间歇式转动可以带动从动杆52间歇式转动，从而使得中轮56进行间歇式旋转，此时三角转动板57可以进行间歇式旋转，最终配合声音处理器611在不同位置可以很好地进行多点位声音检测。
三、本申请通过夹持结构6的设计，在需要更换声音处理器611时，可以通过启动旋转把手67使得双向螺纹杆68转动，调节两个L型夹持块610相对运动直至对声音处理器611壳体进行夹紧，当需要更换声音处理器611时，反向转动旋转把手67带动双向螺纹杆68反向转动，调节两个L型夹持块610往相反的方向运动即可，可以及时更换声音处理器611，保证了对多种变压器进行检测的作用，且满足了及时更换声音处理器611的需求。

Claims (9)

  1. 一种用于变压器监测的声音检测装置，设置为对变压器(1)进行监测；所述的声音检测装置包括设在所述变压器(1)顶部或侧面的移动结构(4)；所述的移动结构(4)包括底板(41)；所述的底板(41)两端对称固定有两个竖板(42)；两个所述的竖板(42)中间位置固定有齿条(44)；所述的齿条(44)两侧对称固定有两个横杆(43)；两个所述的横杆(43)对称套接有两个移动块(45)；两个所述移动块(45)的顶部固定有一N型板(46)，两个所述移动块(45)中的其中一个的侧面固定有连接板(47)；所述的连接板(47)上安装有伺服电机(410)，所述伺服电机(410)设置为驱动所述移动结构(4)沿着所述齿条(44)的长度方向移动；所述的N型板(46)的顶部固定有旋转结构(5)；所述的旋转结构(5)上对称固定有三个夹持结构(6)；三个所述的夹持结构(6)上均安装有声音处理器(611)，所述的声音处理器(611)的外表面一端固定有传声器(612)。
  2. 根据权利要求1所述的用于变压器监测的声音检测装置，其中，所述的伺服电机(410)的输出端连接有减速器(411)；所述的减速器(411)的输出轴一端贯穿于其中一个所述移动块(45)并延伸至另一个所述移动块(45)的内部；所述的减速器(411)的输出轴上固定套接有驱动齿轮(412)；所述的驱动齿轮(412)的底部与所述齿条(44)啮合安装，所述驱动齿轮(412)设置为通过旋转带动所述移动结构(4)移动。
  3. 根据权利要求2所述的用于变压器监测的声音检测装置，其中，所述连接板(47)上安装有两个L型定位块(48)，两个所述L型定位块(48)分别固定在伺服电机(410)的两侧，两个所述L型定位块(48)上安装有一个用于对伺服电机(410)进行固定的半轮保护架(49)。
  4. 根据权利要求1所述的用于变压器监测的声音检测装置，其中，所述的旋转结构(5)包括底座(51)、从动杆(52)和圆板(53)；所述的底座(51)固定在所述的N型板(46)中间位置；所述的从动杆(52)的底部垂直且转动安装在底座(51)中间位置，所述从动杆(52)的顶部固定套接有中轮(56)；所述中轮(56)的侧壁等距固定连接有三个三角转动板(57)；
    所述N型板(46)的外表面一侧固定有垫板(413)；所述垫板(413)的上表面固定有异步电机(59)，所述异步电机(59)通过联动组件与从动杆(52)连接。
  5. 根据权利要求4所述的用于变压器监测的声音检测装置，其中，所述联动组件包括固定套接在异步电机(59)输出轴外侧壁上的主动齿轮(511)，所述从动杆(52)的外侧壁上固定套接有圆板(53)，所述圆板(53)的外侧壁设置有与主动齿轮(511)进行啮合的多个轮齿(54)，多个所述轮齿(54)均 匀分布在圆板(53)的侧壁上。
  6. 根据权利要求4所述的用于变压器监测的声音检测装置，其中，所述异步电机(59)的底部通过保护垫(510)分别与N型板(46)和垫板(413)的顶部连接。
  7. 根据权利要求4所述的用于变压器监测的声音检测装置，其中，所述三角转动板(57)的顶部固定连接有用于对声音处理器(611)进行限位的定位轮(58)，所述声音处理器(611)的壳体上设置有与定位轮(58)匹配设置的限位凹槽。
  8. 根据权利要求4所述的用于变压器监测的声音检测装置，其中，三个所述的夹持结构(6)分别固定在三个所述三角转动板(57)上；所述的夹持结构(6)包括一侧开口的立层盒(61)；所述立层盒(61)的内腔贯穿转动安装有双向螺纹杆(68)，所述双向螺纹杆(68)的一端固定安装有旋转把手(67)，所述立层盒(61)内滑动连接有两个用于对声音处理器进行夹持固定的夹持组件，且两个所述夹持组件均螺纹套接在双向螺纹杆(68)的外侧壁上，所述双向螺纹杆(68)的一端固定连接有旋转把手(67)。
  9. 根据权利要求8所述的用于变压器监测的声音检测装置，其中，所述夹持组件包括螺纹套接在双向螺纹杆(68)外侧壁上的滑块(66)，所述滑块(66)通过固定螺栓(69)连接有L型夹持块(610)。
PCT/CN2023/116234 2022-10-24 2023-08-31 用于变压器监测的声音检测装置 Ceased WO2024087879A1 (zh)

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