WO2024041243A1 - 一种断路器防火壳体及其主输出轴角弧度监测系统 - Google Patents

一种断路器防火壳体及其主输出轴角弧度监测系统 Download PDF

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Publication number
WO2024041243A1
WO2024041243A1 PCT/CN2023/106587 CN2023106587W WO2024041243A1 WO 2024041243 A1 WO2024041243 A1 WO 2024041243A1 CN 2023106587 W CN2023106587 W CN 2023106587W WO 2024041243 A1 WO2024041243 A1 WO 2024041243A1
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WIPO (PCT)
Prior art keywords
circuit breaker
dry powder
housing
fireproof
heat dissipation
Prior art date
Application number
PCT/CN2023/106587
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English (en)
French (fr)
Inventor
宋庆林
张跃峰
李辉
代正元
白双全
董伟
彭晓宇
刘志洪
周瀛
陈海熙
Original Assignee
云南电网有限责任公司昆明供电局
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Publication of WO2024041243A1 publication Critical patent/WO2024041243A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C35/00Permanently-installed equipment
    • A62C35/02Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/10Containers destroyed or opened by flames or heat
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02Housings; Casings; Bases; Mountings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04Means for indicating condition of the switching device
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52Cooling of switch parts

Definitions

  • the utility model relates to the technical field of circuit breaker equipment, in particular to a circuit breaker fireproof housing and its main output shaft angle and radian monitoring system.
  • Circuit breakers are the most commonly used primary equipment in power systems, and the workload of inspection and maintenance is also very heavy.
  • the opening and closing coil is an important structure inside the circuit breaker. When it is working, it can remotely control the closing or opening electromagnet of the circuit breaker and drive the circuit breaker with electromagnetic force. Generally, when installing the opening and closing coil, it will Mount it directly on the bulkhead inside the circuit breaker with the help of bolts.
  • the temperature is high during opening and closing operation and cannot effectively dissipate heat; if sparks are generated, malfunctions may occur during long-term operation. If not discovered in time, there may even be a risk of fire.
  • circuit breakers are based on the work experience of maintenance personnel, using relatively single methods such as opening and closing action characteristics meters, multimeters, and listening to sounds; mainly judging whether the circuit breaker is jammed from the perspective of experience; Observation or a mechanical angle ruler is used to measure the rotation angle of the main output shaft to determine whether the opening and closing are in place, etc.
  • These scattered manual methods mentioned above can only roughly judge its status, without focus, and have a large workload, low efficiency, and slow speed.
  • the results of analysis and judgment are prone to deviations, and the quality of maintenance is also uneven.
  • circuit breakers The long-term opening and closing of circuit breakers is affected by factors such as large currents and strong electromagnetic forces. It is very common that the opening and closing are not in place and the rotating parts are stuck.
  • the problem to be solved by this utility model is how to provide a fireproof housing of a circuit breaker that can efficiently dissipate heat under normal circumstances and prevent fire under extreme circumstances.
  • a circuit breaker fireproof housing including a heat dissipation unit and a fire prevention unit; wherein the heat dissipation unit includes a main housing, and a group of the main housing A blast box is symmetrically arranged on the side, and a number of heat dissipation holes are symmetrically arranged on the other side of the blast box; the fire prevention unit is located on the top of the main housing and includes a dry powder layer, and a number of dry powder balls are arranged in the dry powder layer.
  • a plurality of first dust-proof nets are evenly arranged on the blast box, and a cooling fan is arranged in the blast box.
  • the heat dissipation hole is provided with a second dustproof net on one side close to the outer wall of the main housing, and the heat dissipation hole is provided on one side close to the inner wall of the main housing.
  • the adjusting member includes an adjusting rod and a fixed rod arranged in parallel, an elastic plate is provided between the adjusting rod and the fixed rod, and the fixed rod
  • the rods are symmetrically arranged on the inner wall of the main housing.
  • a telescopic tube is also provided between the adjusting rods, and the telescopic tube is filled with nitrogen.
  • a plurality of powder outlets are evenly opened at the bottom of the dry powder layer, and a plastic film is provided in the powder outlets.
  • the dry powder layer is provided with several layers, and the center of the powder outlet hole of each layer is in the same vertical direction.
  • the overall design of the blast box and heat dissipation holes ensures the overall ventilation and cooling of the circuit breaker housing, and the adjustment parts inside the heat dissipation holes can change the actual opening of the vents as the internal temperature rises, increasing ventilation. flow, accelerating cooling; in extreme cases of fire, the plastic film of the dry powder layer burns, causing the dry powder balls to fall into the fire area, thereby extinguishing the fire.
  • the multi-layer design makes the usage of dry powder balls controllable, economical and environmentally friendly.
  • Another problem to be solved by this utility model is how to provide a circuit breaker opening and closing coil current monitoring system that can timely and accurately detect whether the opening and closing are in place or whether the rotating parts are stuck.
  • a circuit breaker main output shaft angular arc monitoring system including the above-mentioned circuit breaker fireproof housing; and a monitoring unit located inside the main housing, which includes a measuring Acquisition conversion module, A/D conversion module, DSP digital signal processor, lithium battery charging management chip, human-machine display module and high-precision power supply module.
  • the measurement acquisition conversion module communicates with the DSP digital signal processor through the A/D conversion module Electrically connected, the calculation results of the DSP digital signal processor are transmitted to the human-machine display module for display.
  • the lithium battery charging management chip can control the charging and discharging of the lithium battery, and can transmit the state of the lithium battery to The human-machine display module displays.
  • the high-precision power module provides 5V to the A/D conversion module, DSP digital signal processor and lithium battery charging management chip respectively. , 3.3.V and 1.8V power supplies.
  • Figure 1 is a schematic diagram of the overall structure of the fireproof housing of the circuit breaker according to the present utility model
  • Figure 2 is a schematic diagram of the main housing and heat dissipation holes of the fireproof housing of the circuit breaker according to the present invention
  • Figure 3 is an enlarged view of the adjusting member at A in Figure 2;
  • Figure 4 is a schematic diagram of the blast box of the fireproof housing of the circuit breaker according to the present utility model
  • Figure 5 is a cross-sectional view of the dry powder layer of the fireproof housing of the circuit breaker according to the present invention.
  • Figure 6 is a schematic diagram of the working principle of the main output shaft angle and radian monitoring system of the circuit breaker according to the present invention.
  • one embodiment or “an embodiment” referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention.
  • “In one embodiment” appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.
  • a first embodiment of the present invention is provided.
  • This embodiment provides a circuit breaker fireproof housing, which includes a heat dissipation unit 100 and a main housing 101.
  • a set of side surfaces of the main housing 101 are symmetrically arranged.
  • a fire prevention unit 200 located on the top of the main housing 101, includes a dry powder layer 201, and a number of dry powder balls 201a are provided in the dry powder layer 201.
  • a number of first dust-proof nets 102a are evenly arranged on the blast box 102, and a cooling fan 102b is arranged inside the blast box 102.
  • a second dust-proof net 103a is provided on the side of the heat dissipation hole 103 close to the outer wall of the main housing 101, and an adjustment member 103b is provided on the side of the heat dissipation hole 103 close to the inner wall of the main housing 101.
  • the adjusting member 103b includes an adjusting rod 103b-1 and a fixed rod 103b-2 arranged in parallel.
  • An elastic plate 103b-3 is provided between the adjusting rod 103b-1 and the fixed rod 103b-2.
  • the fixed rod 103b-2 is symmetrically arranged on the main shell. on the inner wall of the body 101.
  • a telescopic tube 103b-4 is also provided between the adjusting rods 103b-1, and the telescopic tube 103b-4 is filled with nitrogen.
  • a first dust-proof net 102a and a second dust-proof net 103a are respectively installed on the air inlet and outlet holes, namely the blast box 102 and the heat dissipation hole 103, which will not affect ventilation but also prevent dust. Enter.
  • the fixed rod 103b-2 is fixed on both sides of a certain heat dissipation hole 103, while the adjusting rod 103b-1 and the elastic plate 103b-3 can move relatively.
  • the telescopic tube 103b-4 is filled with nitrogen, and the thermal expansion and contraction characteristics of the gas can be used to extend the telescopic tube 103b-4, making it possible to adjust the ventilation area.
  • the working principle of the heat dissipation unit 100 is:
  • the air inlet enters the blast box 102, then flows to the main housing 101, cooling the circuit breaker opening and closing coil, and leaves the main housing 101 through the heat dissipation holes 103 on both sides of the main housing 101, completing a large cycle; when the inside of the main housing 101
  • the telescopic tube 103b-4 on the inner wall of the main housing 101 stretches due to the expansion of nitrogen, pushing the adjusting rod 103b-1 and the elastic plate 103b-3 at both ends to move toward the fixed rod 103b-2, so that the ventilation and heat dissipation area increases. Large, accelerates cooling.
  • the fire protection unit 200 is located on the top of the main housing 101 and includes a dry powder layer 201.
  • a number of dry powder balls 201a are provided in the layer 201.
  • a number of powder outlet holes 201b are evenly opened at the bottom of the dry powder layer 201, and a plastic film 201b-1 is provided in the powder outlet holes 201b.
  • the dry powder layer 201 is provided with several layers, and the center of the powder outlet hole 201b of each layer is in the same vertical direction.
  • the heat dissipation unit 100 can ensure normal heat dissipation, it cannot be ruled out that continuous operation or failure or the opening and closing moment may cause a fire inside the circuit breaker, so the fire protection unit 200 is designed.
  • circuit breaker is an electrical device
  • dry powder fire extinguishing method is used.
  • the dry powder layer 201 is provided with several layers, and the centers of the powder outlets 201b of each layer are in the same vertical direction, so that the dry powder balls 201a can smoothly fall into the main housing 101 from top to bottom.
  • the working principle of the fire protection unit 200 is:
  • the high temperature inside the main casing 101 burns the plastic film 201b-1, and the dry powder ball 201a in the dry powder layer 201 closest to the main casing 101 falls into the main casing 101.
  • the high temperature burns the outer shell of the dry powder ball 201a, causing the dry powder inside it. Spray it out to extinguish the fire; generally, the amount of use of one layer of dry powder balls 201a is enough to extinguish the fire, but for safety reasons, other dry powder layers 201 are provided as backup, and the working principle is consistent with the above method.
  • a third embodiment of the present invention is shown. What is different from the first two embodiments is that this embodiment provides a circuit breaker main output shaft angle arc monitoring system: including the circuit breakers of Embodiments 1 and 2.
  • the fireproof shell of the device; and, the monitoring unit 300 is located inside the main shell 301, which includes a measurement acquisition conversion module 301, an A/D conversion module 302, a DSP digital signal processor 303, a lithium battery charging management chip 304, a human-machine The display module 305 and the high-precision power supply module 306.
  • the measurement acquisition conversion module 301 is electrically connected to the DSP digital signal processor 303 through the A/D conversion module 302.
  • the calculation results of the DSP digital signal processor 303 are transmitted to the human-machine display module 305 for display. .
  • the lithium battery charge management chip 304 can control the charging and discharging of the lithium battery 307, and can transmit the state of the lithium battery 307 to the human-machine display module 305 for display.
  • the high-precision power module 306 pairs the A/D conversion module 302, DSP digital signal processor 303 and lithium
  • the battery charging management chip 304 provides 5V, 3.3V and 1.8V power supplies respectively.
  • the measurement acquisition conversion module 301 is used to measure the rotation angle of the main rotation axis of the circuit breaker mechanism, filter the collected analog signals to filter out signals higher than 100kHZ, and transmit the filtered analog signals to the A/D conversion Module 302.
  • the A/D conversion module 302 is connected to the measurement acquisition conversion module 301 and is used to convert the analog signals transmitted from the measurement acquisition conversion module 301 into digital signals.
  • the DSP digital signal processor 303 is connected to the A/D conversion module 302 and the human-machine display module 305 respectively, and is used to calculate the digital signal of the rotation angle transmitted from the A/D conversion module 302, record the wave, and then record it. Compare and analyze the historical data stored in the DSP digital signal processor 303, and send the analysis results to the human-machine display module 305 for display; the DSP digital signal processor 303 is also used to store its calculation and analysis results.
  • the lithium battery charging management chip 304 is connected to the human-machine display module 305 and the lithium battery 307 respectively, and is used to manage the charge and discharge of the lithium battery 307, and sends the status of the lithium battery 307 to the human-machine display module 305 for display.
  • the high-precision power module 306 is connected to the lithium battery charging management chip 304, the A/D conversion module 302, and the DSP digital signal processor 303 respectively; and is used to control the working voltage supplied to the A/D conversion module 302 and the DSP digital signal processor 303.
  • the high-precision power module 306 provides 5V power to the A/D conversion module 302, and provides 3.3V and 1.8V power to the DSP digital signal processor 303 and lithium battery charge management chip 304 respectively.
  • the measurement acquisition conversion module 301 includes a high-precision Hall non-contact angle sensor, which is powered by 5V.
  • the angle sensor has a detection range of 0° to 360°, a detection accuracy of ⁇ 0.3% FS, a resolution of 0.088°, and a refresh speed of 0.2ms. Mechanical life >50 million revolutions.
  • the high-precision angle sensor is specifically the GT-E sensor.
  • the GT-E sensor is a high-performance non-contact Hall angle sensor that converts angles into electrical signals through the Hall effect principle.
  • the GT series angle sensor has the advantages of a non-contact angle sensor and uses imported lubricating bearings as rotating and sliding parts, so that the friction resistance during measurement is relatively small, and the measurement accuracy will not be reduced due to surface wear of the measuring parts.
  • the theoretical service life is Extremely long; this product has compact structure, small size, strong optionality, high resolution, smooth rotation, and small dynamic noise. It has excellent performance and can be applied to harsh industrial environments except for strong magnetic interference. It is a cost-effective contactless angle sensor.
  • the calculation content includes the spindle rotation angle and angle speed, combined with Fourier analysis to analyze the spectral characteristics of the angle change curve.
  • the DSP digital signal processor 303 also stores the judgment characteristics, contents and solutions of the faulty circuit breaker. When compared and analyzed with historical data, judgment will be made based on the stored fault judgment method, and the judgment results and corresponding results will be given. solution.
  • the display module 305 is a touch display screen.
  • This embodiment uses a common power adapter to provide DC12V, load current 2A power supply and charging for the device.
  • the specific work flow of the monitoring unit 300 is:
  • circuit breaker spindle rotation characteristics test icon module clicks the "Circuit breaker spindle rotation characteristics test" icon module to enter the test interface, set the calibration mode, and check the initial state of the sensor; select the mutation amount automatic or manual start mode.
  • the circuit breaker is opened and closed, and the device collects the angle sensor in real time. Parameters, synchronously record the angle, displacement, and spectrum characteristics of the circuit breaker.
  • the horizontal, vertical and standard database data are compared and judged. The singular point data is analyzed and judged to give the changing characteristics of the circuit breaker, which is reflected to the maintenance personnel and provides maintenance personnel with Maintenance recommendations.
  • the device analyzes the possible results based on the collected data and gives maintenance suggestions to the staff.
  • the analyzer of the present invention is not limited to the above structure. After reasonable expansion on the basis of the above structure, the products obtained are within the protection scope of the present invention. For example, you can add simulation interfaces, USB interfaces, debugging interfaces, etc. connected to the DSP digital signal processor; simulation interface: complete online function expansion debugging; USB interface: complete offline analysis of test data; debugging interface: online collaborative analysis and processing.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Breakers (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

一种断路器防火壳体及断路器主输出轴角弧度监测系统,涉及断路器设备技术领域。该防火壳体包括散热单元(100)和防火单元(200);其中散热单元包括主壳体(101),该主壳体的一组侧面对称设置有鼓风箱(102),其另一组侧面对称开设有若干散热孔(103);防火单元位于该主壳体的顶部,其包括干粉层(201),该干粉层内设置有若干干粉球(201a)。正常情况下,通过鼓风箱和散热孔的整体设计,保证断路器壳体的整体通风降温,而且散热孔内部的调节件能够随着内部温度升高而改变通风口的实际开度,加大通风流量,加速降温;在失火极端情况下,干粉层的塑料膜烧毁,使得干粉球落入失火区域,从而灭火,而且多层设计,使得干粉球使用量可控,经济环保。

Description

一种断路器防火壳体及其主输出轴角弧度监测系统 技术领域
本实用新型涉及断路器设备技术领域,特别是涉及一种断路器防火壳体及其主输出轴角弧度监测系统。
背景技术
电力系统中断路器是应用最多的一次设备,检修、维护工作量也非常大。分合闸线圈是断路器内部的重要结构,其在工作时能够远距离控制断路器合闸或者分闸的电磁铁,以电磁力驱动断路器,一般在对分合闸线圈进行安装时,会借助螺栓直接将其安装在断路器内部的隔板上。
分合闸工作时温度较高,不能有效散热;如果有火花产生,长期工作出现故障,如果发现不及时,甚至有火灾的危险。
此外,目前检修断路器都是凭检修人员工作经验作业,用分合闸动作特性仪、万用表,听声音等相对单一的方法来判断;主要还是从经验角度来判断断路器是否存在卡涩;用观测或机械角度尺来测量主输出轴的旋转角度来判断是否分合到位等等,上述这些分散的人工方法只能大概判断其状态,没有重点,且工作量大、效率低、速度慢。限于检修人员技能水平的高低,分析判断的结果容易出现偏差,检修的质量也就参差不齐。
断路器长期分合受大电流、强电磁力等因素的影响,分合闸不到位、转动部位卡涩非常常见,目前还没有一种动作特性分析装置能将分散的人工方法组合起来,综合测试断路器动作特性并对比计算、分析判断,图形化输出给检修人员,并辅助决策检修。
实用新型内容
本部分的目的在于概述本实用新型的实施例的一些方面以及简要介绍一些较佳实施例。在本部分以及本申请的说明书摘要和实用新型名称中可能会做些简化或省略以避免使本部分、说明书摘要和实用新型名称的目的模糊,而这种简化或省略不能用于限制本实用新型的范围。
因此,本实用新型所要解决的问题在于如何提供一种断路器防火壳体,能够在正常情况下高效散热,且极端情况下防止失火。
为解决上述技术问题,本实用新型提供如下技术方案:一种断路器防火壳体,包括散热单元和防火单元;其中散热单元包括主壳体,所述主壳体的一组 侧面对称设置有鼓风箱,其另一组侧面对称开设有若干散热孔;防火单元,位于所述主壳体的顶部,其包括干粉层,所述干粉层内设置有若干干粉球。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述鼓风箱上均匀设置有若干第一防尘网,所述鼓风箱内设置有散热风扇。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述散热孔靠近主壳体外壁一侧设置有第二防尘网,所述散热孔靠近主壳体内壁一侧设置有调节件。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述调节件包括平行布置的调节杆和固定杆,所述调节杆和固定杆之间设置有弹性板,所述固定杆对称布置在主壳体内壁上。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述调节杆之间还设置有伸缩管,所述伸缩管内填充有氮气。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述干粉层底部均匀开设有若干出粉孔,所述出粉孔内设置有塑料膜。
作为本实用新型所述断路器防火壳体的一种优选方案,其中:所述干粉层设置有若干层,每一层的出粉孔中心在同一竖直方向上。
本实用新型的断路器防火壳体的有益效果:
正常情况下,通过鼓风箱和散热孔的整体设计,保证断路器壳体的整体通风降温,而且散热孔内部的调节件能够随着内部温度升高而改变通风口的实际开度,加大通风流量,加速降温;在失火极端情况下,干粉层的塑料膜烧毁,使得干粉球落入失火区域,从而灭火,而且多层设计,使得干粉球使用量可控,经济环保。
本实用新型所要解决的另一个问题在于如何提供一种断路器分合闸线圈电流监测系统,能够及时准确发现分合闸是否到位,或者转动部件是否卡涩。
为解决上述技术问题,本实用新型提供还如下技术方案:一种断路器主输出轴角弧度监测系统,包括上述的断路器防火壳体;以及监测单元,位于主壳体的内部,其包括测量采集变换模块、A/D转换模块、DSP数字信号处理器、锂电池充电管理芯片、人机显示模块和高精度电源模块,所述测量采集变换模块通过A/D转换模块与DSP数字信号处理器电性相连,所述DSP数字信号处理器的计算结果传输到人机显示模块显示。
作为本实用新型所述的断路器主输出轴角弧度监测系统一种优选方案,其中:所述锂电池充电管理芯片能够控制锂电池的充放电,且其能够将锂电池的电量等状态传输到人机显示模块显示。
作为本实用新型所述的断路器主输出轴角弧度监测系统一种优选方案,其中:所述高精度电源模块对A/D转换模块、DSP数字信号处理器和锂电池充电管理芯片分别提供5V、3.3.V和1.8V电源。
本实用新型的断路器主输出轴角弧度监测系统的有益效果:
将测量电机电流的万用表、判断隔离开关本体是否存在卡涩的手动分合、测量主输出轴的旋转角度的机械角度尺集等集成起来,提供可视化测试、分析数据并提出检修建议,供检修人员参考,可大大提高工作效率,降低成本,作业风险大大降低。
附图说明
为了更清楚地说明本实用新型实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本实用新型的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。其中:
图1为本实用新型所述的断路器防火壳体的整体结构示意图;
图2为本实用新型所述的断路器防火壳体的主壳体与散热孔示意图;
图3为图2中A处的调节件放大图;
图4为本实用新型所述的断路器防火壳体的鼓风箱示意图;
图5为本实用新型所述的断路器防火壳体的干粉层剖面图;
图6为本实用新型所述的断路器主输出轴角弧度监测系统的工作原理示意图。
具体实施方式
为使本实用新型的上述目的、特征和优点能够更加明显易懂,下面结合说明书附图对本实用新型的具体实施方式做详细的说明。
在下面的描述中阐述了很多具体细节以便于充分理解本实用新型,但是本实用新型还可以采用其他不同于在此描述的其它方式来实施,本领域技术人员可以在不违背本实用新型内涵的情况下做类似推广,因此本实用新型不受下面公开的具体实施例的限制。
其次,此处所称的“一个实施例”或“实施例”是指可包含于本实用新型至少一个实现方式中的特定特征、结构或特性。在本说明书中不同地方出现的“在一个实施例中”并非均指同一个实施例,也不是单独的或选择性的与其他实施例互相排斥的实施例。
实施例1
参照图1~4,为本实用新型第一个实施例,该实施例提供了一种断路器防火壳体,包括散热单元100,包括主壳体101,主壳体101的一组侧面对称设置有鼓风箱102,其另一组侧面对称开设有若干散热孔103;防火单元200,位于主壳体101的顶部,其包括干粉层201,干粉层201内设置有若干干粉球201a。
鼓风箱102上均匀设置有若干第一防尘网102a,鼓风箱102内设置有散热风扇102b。
散热孔103靠近主壳体101外壁一侧设置有第二防尘网103a,散热孔103靠近主壳体101内壁一侧设置有调节件103b。
调节件103b包括平行布置的调节杆103b-1和固定杆103b-2,调节杆103b-1和固定杆103b-2之间设置有弹性板103b-3,固定杆103b-2对称布置在主壳体101内壁上。
调节杆103b-1之间还设置有伸缩管103b-4,伸缩管103b-4内填充有氮气。
防止灰尘杂质附着在断路器内部,所以在进出风孔即鼓风箱102和散热孔103上分别加装了第一防尘网102a和第二防尘网103a,既不影响通风,也能防止灰尘进入。
固定杆103b-2是固定在某一个散热孔103的两侧,而调节杆103b-1和弹性板103b-3可以相对移动。
伸缩管103b-4内填充有氮气,可以利用气体热胀冷缩的特性使伸缩管103b-4伸长,使得调节通风面积变为可能。
散热单元100的工作原理为:
正常情况下,启动散热风扇102b,内部形成负压,外部空气从鼓风箱102
的进风孔进入鼓风箱102,再流向主壳体101,冷却断路器分合闸线圈,从主壳体101两侧的散热孔103离开主壳体101,完成大循环;当主壳体101内部温度升高时,主壳体101内壁的伸缩管103b-4因为氮气膨胀而伸长,推动两端的调节杆103b-1和弹性板103b-3向固定杆103b-2运动,使得通风散热面积增 大,加速降温。
实施例2
参照图1、图2和图5,为本实用新型第二个实施例,其不同于第一个实施例的是:防火单元200,位于主壳体101的顶部,其包括干粉层201,干粉层201内设置有若干干粉球201a。
干粉层201底部均匀开设有若干出粉孔201b,出粉孔201b内设置有塑料膜201b-1。
干粉层201设置有若干层,每一层的出粉孔201b中心在同一竖直方向上。
虽然散热单元100可以保证正常散热,但是不排除连续工作或者故障又或者分合闸瞬间,引起断路器内部发生火灾,所以设计了防火单元200。
考虑到断路器为电气设备,所以采用干粉灭火的方法。
干粉层201设置有若干层,每一层的出粉孔201b中心在同一竖直方向上,这使得干粉球201a可以由上至下顺利掉入主壳体101。
防火单元200的工作原理为:
失火情况下,主壳体101内部高温烧毁塑料膜201b-1,最靠近主壳体101的干粉层201内的干粉球201a掉入主壳体101,高温烧毁干粉球201a外壳,使得其内部干粉喷洒出来,从而灭火;一般情况下,一层干粉球201a的使用量足以使得火灾被扑灭,但为安全起见,设置了备用的其他干粉层201,工作原理和上述方法一致。
实施例3
参照图6,为本实用新型第三个实施例,其不同于前两个实施例的是,该实施例提供了一种断路器主输出轴角弧度监测系统:包括实施例1和2的断路器防火壳体;以及,监测单元300,位于主壳体301的内部,其包括测量采集变换模块301、A/D转换模块302、DSP数字信号处理器303、锂电池充电管理芯片304、人机显示模块305和高精度电源模块306,测量采集变换模块301通过A/D转换模块302与DSP数字信号处理器303电性相连,DSP数字信号处理器303的计算结果传输到人机显示模块305显示。
锂电池充电管理芯片304能够控制锂电池307的充放电,且其能够将锂电池307的电量等状态传输到人机显示模块305显示。
高精度电源模块306对A/D转换模块302、DSP数字信号处理器303和锂 电池充电管理芯片304分别提供5V、3.3V和1.8V电源。
测量采集变换模块301,用于测量断路器机构主旋转轴旋转角度,并对采集到的模拟信号进行滤波,以滤除高于100kHZ的信号,并将滤波后的模拟信号传给A/D转换模块302。
A/D转换模块302,与测量采集变换模块301相连,用于将测量采集变换模块301传来的模拟信号转化为数字信号。
DSP数字信号处理器303,分别与A/D转换模块302、人机显示模块305相连,用于将A/D转换模块302传来的旋转角度的数字信号计算,并进行录波,之后将其与DSP数字信号处理器303内存储的历史数据进行比较分析,并将分析结果发送至人机显示模块305中显示;DSP数字信号处理器303还用于存储其计算和分析结果。
锂电池充电管理芯片304别与人机显示模块305、锂电池307相连,用于对锂电池307的充放电管理,并将锂电池307的状态发送至人机显示模块305进行显示。
高精度电源模块306分别与锂电池充电管理芯片304、A/D转换模块302、DSP数字信号处理器303相连;用于控制供给A/D转换模块302、DSP数字信号处理器303的工作电压。例如,高精度电源模块306对A/D转换模块302的提供5V电源,对DSP数字信号处理器303和锂电池充电管理芯片304分别提供3.3V及1.8V电源。
测量采集变换模块301包括高精度霍尔非接触角度传感器,采用5V供电,角度传感器的检测范围为0°~360°,检测精度为±0.3%FS,分辨率0.088°,刷新速度:0.2ms,机械寿命>5000万转。
高精度角度传感器具体为GT-E传感器,GT-E传感器是一款高性能非接触式霍尔角度传感器,通过霍尔效应原理,将角度转化成电信号的传感器。GT系列角度传感器具备非接触式角度传感器的优点,并使用进口润滑轴承做旋转滑动部件,使得其测量时摩擦阻力比较小,不会因为测量部件的表面磨损而导致测量精度下降,使用寿命理论上极长;该产品结构紧凑,体积小巧,可选性强,分辨率高,转动顺滑,动态噪声小的优良性能可适用于除强磁干扰外的恶劣的工业使用环境,是一款高性价比的无触点式角度传感器。
DSP数字信号处理器303进行计算时,计算的内容包括主轴旋转角度及角 速度,并结合傅里叶分析角度变化曲线的频谱特性。DSP数字信号处理器303内还存储有故障态断路器的判断特征、内容及解决方法,当与历史数据进行比较分析时,会根据存储的故障的判断方法进行判断,并给出判断结果及相应的解决办法。
显示模块305为触摸显示屏。
本实施例采取常见的电源适配器,为装置提供DC12V,负荷电流2A电源及充电。
监测单元300的具体工作流程为:
1、连接准备
1)根据待测断路器情况在主轴上安装同轴角度传感器,主轴上贴装5*2mm径向磁铁,传感器和磁体保持同心,且保持2mm左右的非接触距离。
2)将角度传感器一端接入主机相应USB方形接口。
3)安装好后将连接线插入相应方形装置USB接口。
2、测试准备
打开装置电源,点击“断路器主轴旋转特性测试”图标模块,进入测试界面,设置校准模式,检查传感器初始状态;选择突变量自动或手动启动模式,此时分合断路器,装置实时采集角度传感器各项参数,同步记录断路器角度、位移,及频谱特性,同时横向、纵向和标准数据库数据比对判断,将奇异点数据分析判断给出断路器变化特性,反映给检修人员,并为检修人员提供检修建议。
断路器分合的操作完成后,装置根据采集的数据分析出可能的结果,给出工作人员检修建议。本发明分析仪不限于上述结构,在上述结构基础上经过合理的扩展,所得到的产品均在本发明的保护范围内。如可增加与DSP数字信号处理器相连的仿真接口、USB接口、调试接口等;仿真接口:完成在线功能扩展调试;USB接口:完成测试数据离线分析;调试接口:在线联机协同分析处理。
应说明的是,以上实施例仅用以说明本实用新型的技术方案而非限制,尽管参照较佳实施例对本实用新型进行了详细说明,本领域的普通技术人员应当理解,可以对本实用新型的技术方案进行修改或者等同替换,而不脱离本实用新型技术方案的精神和范围,其均应涵盖在本实用新型的权利要求范围当中。

Claims (10)

  1. 一种断路器防火壳体,其特征在于:包括,
    散热单元(100),包括主壳体(101),所述主壳体(101)的一组侧面对称设置有鼓风箱(102),其另一组侧面对称开设有若干散热孔(103);
    防火单元(200),位于所述主壳体(101)的顶部,其包括干粉层(201),所述干粉层(201)内设置有若干干粉球(201a)。
  2. 如权利要求1所述的断路器防火壳体,其特征在于:所述鼓风箱(102)上均匀设置有若干第一防尘网(102a),所述鼓风箱(102)内设置有散热风扇(102b)。
  3. 如权利要求2所述的断路器防火壳体,其特征在于:所述散热孔(103)靠近主壳体(101)外壁一侧设置有第二防尘网(103a),所述散热孔(103)靠近主壳体(101)内壁一侧设置有调节件(103b)。
  4. 如权利要求3所述的断路器防火壳体,其特征在于:所述调节件(103b)包括平行布置的调节杆(103b-1)和固定杆(103b-2),所述调节杆(103b-1)和固定杆(103b-2)之间设置有弹性板(103b-3),所述固定杆(103b-2)对称布置在主壳体(101)内壁上。
  5. 如权利要求4所述的断路器防火壳体,其特征在于:所述调节杆(103b-1)之间还设置有伸缩管(103b-4),所述伸缩管(103b-4)内填充有氮气。
  6. 如权利要求1~5任一所述的断路器防火壳体,其特征在于:所述干粉层(201)底部均匀开设有若干出粉孔(201b),所述出粉孔(201b)内设置有塑料膜(201b-1)。
  7. 如权利要求6所述的断路器防火壳体,其特征在于:所述干粉层(201)设置有若干层,每一层的出粉孔(201b)中心在同一竖直方向上。
  8. 一种断路器主输出轴角弧度监测系统,其特征在于:包括如权利要求1~7任一所述的断路器防火壳体;以及,
    监测单元(300),位于主壳体(301)的内部,其包括测量采集变换模块(301)、A/D转换模块(302)、DSP数字信号处理器(303)、锂电池充电管理芯片(304)、人机显示模块(305)和高精度电源模块(306),所述测量采集变换模块(301)通过A/D转换模块(302)与DSP数字信号处理器(303)电性相连,所述DSP数字信号处理器(303)的计算结果传输到人机显示模块(305)显示。
  9. 如权利要求8所述的断路器主输出轴角弧度监测系统,其特征在于:所述锂电池充电管理芯片(304)能够控制锂电池(307)的充放电,且其能够将锂电池(307)的电量等状态传输到人机显示模块(305)显示。
  10. 如权利要求9所述的断路器主输出轴角弧度监测系统,其特征在于:所述高精度电源模块(306)对A/D转换模块(302)、DSP数字信号处理器(303)和锂电池充电管理芯片(304)分别提供5V、3.3V和1.8V电源。
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