CN116593786A - A 35kv collector line safe lightning protection detection system - Google Patents
A 35kv collector line safe lightning protection detection system Download PDFInfo
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- CN116593786A CN116593786A CN202310510512.1A CN202310510512A CN116593786A CN 116593786 A CN116593786 A CN 116593786A CN 202310510512 A CN202310510512 A CN 202310510512A CN 116593786 A CN116593786 A CN 116593786A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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Abstract
Description
技术领域technical field
本发明涉及电力防雷测试技术领域,具体为用于35kv集电线路安全型防雷击检测系统。The invention relates to the technical field of electric lightning protection testing, in particular to a safe lightning protection detection system for 35kv collector lines.
背景技术Background technique
由于35kv集电线路架空设置,在雷雨天气极易受雷击侵害造成线路故障,因此目前的35kv集电线路通常采用架设避雷线的方式进行避雷,由避雷线连接引下线接地,为确保35kv集电线路的安全,电力规定引下线的冲击接地电阻应当小于10欧姆,接地电阻是防雷接地系统的主要测试内容,且是衡量杆塔接地状态是否良好的一个重要参数,因此必须定期对杆塔接地系统的接地电阻进行检测,对检测结果进行分析与综合判断,以便掌握杆塔防雷接地状态的安全性。Since the 35kv collector line is installed overhead, it is very vulnerable to lightning strikes in thunderstorm weather and cause line faults. For the safety of the electric line, the impact grounding resistance of the down conductor should be less than 10 ohms according to the electric power regulations. The grounding resistance is the main test content of the lightning protection grounding system, and it is an important parameter to measure whether the grounding state of the tower is good. Therefore, the tower must be grounded regularly The grounding resistance of the system is detected, and the detection results are analyzed and comprehensively judged in order to grasp the safety of the lightning protection grounding state of the tower.
目前对于35kv集电线路防雷接地的检测多采用接地电阻测试仪检测接地电阻的数值,在检测过程中,需人工佩戴绝缘手套将引下线从杆塔的塔材上拆卸下来,将接地电阻测试仪分别连接电流、电压与电阻测试线,电流、电压测试线末端连接接地探针打入地底,电阻测试线末端则连接拆卸下来的引下线,手动调整接地电阻测试仪的档位,在显示器上读取检测数据并记录。At present, for the detection of lightning protection and grounding of 35kv current collecting lines, the grounding resistance tester is mostly used to detect the value of the grounding resistance. Connect the current, voltage and resistance test lines to the tester respectively. The ends of the current and voltage test lines are connected to the grounding probes and driven into the ground, and the ends of the resistance test lines are connected to the removed down conductors. Read and record the test data.
目前用于35kv集电线路防雷接地电阻的检测过程中操作复杂,人工手动拆卸引下线存在触电的风险,且在检测完毕后还需手动安装复位;另外电流、电压与电阻测试线铺设范围广,在铺设与收卷过程中耗费过多的时间,造成接地电阻检测工作效率过低的问题;其次检测数值需人工自主读取,人工手动记录,而每个35kv集电线路杆塔所配备的引下线都不止一个,检测数据的记录工作量大,容易出现偏差与漏洞。At present, the detection process of the lightning protection and grounding resistance of the 35kv current collecting line is complicated, and there is a risk of electric shock when the down conductor is manually dismantled, and it needs to be manually installed and reset after the detection is completed; in addition, the laying range of current, voltage and resistance test lines Wide, it takes too much time in the process of laying and winding, resulting in the problem of low efficiency of grounding resistance detection; secondly, the detection value needs to be manually read and manually recorded, and each 35kv collector line tower is equipped with There is more than one down conductor, and the workload of recording test data is heavy, which is prone to deviations and loopholes.
发明内容Contents of the invention
本发明的目的在于提供一种35kv集电线路安全型防雷击检测系统,以解决上述背景技术中提出的问题。The purpose of the present invention is to provide a 35kv collector line safety type lightning protection detection system to solve the problems raised in the above-mentioned background technology.
为实现上述目的,本发明提供如下技术方案:一种35kv集电线路安全型防雷击检测系统,包括检测箱、接地盒与管理终端,所述检测箱内部放置有接地电阻测试仪,所述接地电阻测试仪一侧开设有凹槽,所述凹槽内部设置有绕线辊,所述绕线辊数量为三个,三个所述绕线辊上分别缠绕有电阻测试线、电流测试线与电压测试线,所述电流测试线与电压测试线远离绕线辊的一端连接有接地探针,所述检测箱内部还安装有中央处理器,所述接地盒内部设置有接地引下线。In order to achieve the above object, the present invention provides the following technical solutions: a 35kv collector line safety lightning protection detection system, including a detection box, a grounding box and a management terminal, a grounding resistance tester is placed inside the detection box, the There is a groove on one side of the ground resistance tester, and a winding roller is arranged inside the groove. The number of the winding rollers is three, and the resistance test line and the current test line are respectively wound on the three winding rollers. A grounding probe is connected to the end of the current testing line and the voltage testing line away from the winding roller, a central processing unit is installed inside the detection box, and a grounding down conductor is arranged inside the grounding box.
优选的,所述接地电阻测试仪通过电路与中央处理器输入端电性连接,所述接地电阻测试仪选用4105A型。Preferably, the ground resistance tester is electrically connected to the input terminal of the central processing unit through a circuit, and the ground resistance tester is a 4105A type.
优选的,所述中央处理器内包括:Preferably, the central processing unit includes:
数据库,用于接收中央处理器处理后通过网络协议传输过来的检测数据,检测数据即为接地电阻测试仪现场采集的电阻值;The database is used to receive the detection data transmitted through the network protocol after being processed by the central processor, and the detection data is the resistance value collected on site by the grounding resistance tester;
数据传输平台,用于读取数据库中的数据内容并进行数据共享,可在管理终端远程对检测数据进行查看、查询与分析。The data transmission platform is used to read the data content in the database and share the data. The detection data can be viewed, queried and analyzed remotely on the management terminal.
优选的,所述电阻测试线、电流测试线与电压测试线分别缠绕于三个绕线辊外侧,所述电阻测试线、电流测试线与电压测试线一端电性连接接地电阻测试仪,所述电流测试线与电压测试线另一端分别连接接地探针插入地底,所述电阻测试线另一端连接接地引下线。Preferably, the resistance test line, the current test line and the voltage test line are respectively wound on the outside of the three winding rollers, one end of the resistance test line, the current test line and the voltage test line are electrically connected to a grounding resistance tester, and the The other ends of the current test line and the voltage test line are respectively connected to the grounding probe and inserted into the ground, and the other end of the resistance test line is connected to the ground down conductor.
优选的,所述绕线辊中部贯穿设置有转轴,所述转轴底端连接有绕线齿轮,所述绕线齿轮数量为三个,分别对应三个绕线辊,处于最后侧的所述绕线齿轮一侧连接有驱动齿轮,所述驱动齿轮上方连接有绕线电机,所述检测箱上表面处于绕线电机的上方安装有绕线开关,三个所述绕线齿轮相互啮合形成转动连接。Preferably, a rotating shaft is provided through the middle of the winding roller, and a winding gear is connected to the bottom end of the rotating shaft. The number of the winding gears is three, corresponding to the three winding rollers respectively. A driving gear is connected to one side of the wire gear, and a winding motor is connected above the driving gear. A winding switch is installed on the upper surface of the detection box above the winding motor, and the three winding gears mesh with each other to form a rotational connection. .
优选的,所述转轴底部通过轴承与检测箱内壁转动连接,所述转轴侧壁连接绕线辊内壁,处于最后侧的所述绕线齿轮与驱动齿轮相啮合形成转动连接。Preferably, the bottom of the rotating shaft is rotatably connected to the inner wall of the detection box through bearings, the side wall of the rotating shaft is connected to the inner wall of the winding roller, and the winding gear at the rearmost side meshes with the driving gear to form a rotational connection.
优选的,所述接地盒上下两侧均贯穿设置有螺栓,所述接地盒内部设置有活动杆,所述活动杆一端内部开设有螺孔,所述螺孔内部设置有螺杆,所述螺杆远离活动杆的一端连接有驱动电机,所述接地盒前侧顶部安装有光伏供电系统,所述活动杆另一端连接有连接座,所述接地盒底部中心处开设有滑槽,所述滑槽内部设置有滑块,所述接地盒顶部贯穿设置有导电片,所述导电片上方套设有密封盖,所述接地盒材质为绝缘的PVC塑料,所述接地盒呈后侧开口的矩形盒状,所述接地盒上下两端通过螺栓安装于集电线路杆塔的塔材侧壁。Preferably, the upper and lower sides of the grounding box are provided with bolts, the grounding box is provided with a movable rod, and one end of the movable rod is provided with a screw hole, and the screw hole is provided with a screw rod, and the screw rod is far away from the One end of the movable rod is connected with a drive motor, a photovoltaic power supply system is installed on the top of the front side of the ground box, the other end of the movable rod is connected with a connecting seat, a chute is opened at the center of the bottom of the ground box, and the inside of the chute A slider is provided, and a conductive sheet is provided through the top of the grounding box, and a sealing cover is set on the top of the conductive sheet, and the material of the grounding box is insulating PVC plastic, and the grounding box is in the shape of a rectangular box with an opening on the rear side , the upper and lower ends of the grounding box are installed on the side wall of the tower material of the current collecting line tower through bolts.
优选的,所述活动杆呈内部中空的圆杆状,所述螺孔内径尺寸与螺杆外径尺寸相适配,所述活动杆一端与螺杆螺纹连接,所述活动杆另一端通过连接座与接地引下线前侧壁连接,所述连接座材质为绝缘的PVC塑料。Preferably, the movable rod is in the shape of a hollow round rod, the inner diameter of the screw hole matches the outer diameter of the screw, one end of the movable rod is threadedly connected to the screw rod, and the other end of the movable rod is connected to the screw through the connecting seat. The grounding down lead is connected to the front side wall, and the material of the connecting seat is insulating PVC plastic.
优选的,所述滑块内壁与接地引下线外侧壁连接,所述滑块宽度尺寸与滑槽内壁宽度尺寸相适配,所述滑块与滑槽内壁形成滑动连接。Preferably, the inner wall of the slider is connected to the outer wall of the grounding down conductor, the width of the slider matches the width of the inner wall of the chute, and the slider forms a sliding connection with the inner wall of the chute.
优选的,所述滑槽两侧内壁均开设有卡槽,所述滑块两侧连接有卡块,所述卡块与滑块一体连接,所述卡块卡于卡槽内形成滑动连接。Preferably, the inner walls on both sides of the chute are provided with locking slots, the two sides of the slider are connected with locking blocks, the locking blocks are integrally connected with the sliding block, and the locking blocks are locked in the locking slots to form a sliding connection.
与现有技术相比,本发明的有益效果是:Compared with prior art, the beneficial effect of the present invention is:
1、本35kv集电线路安全型防雷击检测系统,通过设置活动杆、螺杆与连接座,通过驱动电机带动螺杆转动,螺杆经螺孔驱动活动杆横向移动,活动杆经连接座带动接地引下线横向移动,使接地引下线朝向远离杆塔塔材的一侧移动,在检测完毕后驱动电机反转,驱动活动杆移动复位,推动接地引下线与塔材接触,改变了传统接地引下线与塔材栓接的方式,通过活动杆移动实现接地引下线的自动拆装,弥补了人工手动拆装存在触电威胁的缺陷,使防雷检测过程更加安全。1. This 35kv collector line safety type lightning protection detection system, by setting the movable rod, screw and connecting seat, drives the screw to rotate through the driving motor, the screw drives the movable rod to move laterally through the screw hole, and the movable rod drives the grounding lead through the connecting seat The downline moves laterally, so that the grounding downconductor moves toward the side away from the tower material. After the detection is completed, the drive motor is reversed, and the movable rod is driven to move and reset, and the grounding downconductor is pushed to contact the tower material, which changes the traditional grounding conductor. The down-conductor is bolted to the tower material, and the automatic disassembly and assembly of the grounding down-conductor is realized by moving the movable rod, which makes up for the defect of manual disassembly and assembly that poses the threat of electric shock, and makes the lightning protection detection process safer.
2、本35kv集电线路安全型防雷击检测系统,通过设置滑块与滑槽,接地引下线贯穿滑块,在受活动杆推拉过程中,接地引下线带动滑块卡于滑槽内横向移动,此时滑块既用于限制活动杆随螺杆转动,又用于增强接地引下线横向移动的稳定性。2. This 35kv current collector line safety type lightning protection detection system, by setting the slider and the chute, the grounding down conductor runs through the slider, and in the process of being pushed and pulled by the movable rod, the grounding down conductor drives the slider to be stuck in the chute Inward lateral movement, at this time, the slider is used not only to limit the rotation of the movable rod with the screw rod, but also to enhance the stability of the lateral movement of the grounding downconductor.
3、本35kv集电线路安全型防雷击检测系统,通过设置导电片,在接地引下线拆卸之前,先将电阻测试线末端夹持导电片顶部进行电性连接,然后由活动杆拉动接地引下线移动,使接地引下线不与杆塔塔材接触,此时接地引下线顶部与导电片接触,实现电阻测试线与接地引下线的导通,在此过程中,无需将电阻测试线与接地引下线直接接触连接,进一步增强接地电阻检测的安全性。3. This 35kv current collector line safety type lightning protection detection system, by setting the conductive sheet, before the grounding down-conductor is disassembled, first clamp the end of the resistance test line to the top of the conductive sheet for electrical connection, and then pull the ground by the movable rod The down-conductor moves so that the grounding down-conductor does not contact the tower material. At this time, the top of the grounding down-conductor is in contact with the conductive sheet to realize the conduction between the resistance test line and the grounding down-conductor. In this process, there is no need to connect the resistance The test line is directly connected to the grounding down-conductor, which further enhances the safety of grounding resistance detection.
4、本35kv集电线路安全型防雷击检测系统,通过设置绕线辊,三个绕线辊分别对应缠绕电阻测试线、电流测试线与电压测试线,在铺设测试线时由操作者牵引,在收卷测试线时,通过绕线电机带动驱动齿轮转动,驱动齿轮带动最后侧的一个绕线齿轮转动,该绕线齿轮带动另外两个绕线齿轮转动,使三个绕线辊同时转动收卷测试线,实现电阻测试线、电流测试线与电压测试线的自动收卷功能,缩短测试线收卷所需的时间,加快接地电阻检测的工作效率。4. This 35kv current collector line safety type lightning protection detection system, through the installation of winding rollers, the three winding rollers correspond to winding resistance test lines, current test lines and voltage test lines respectively, and are pulled by the operator when laying test lines , when winding the test line, the winding motor drives the driving gear to rotate, and the driving gear drives the last winding gear to rotate, and the winding gear drives the other two winding gears to rotate, so that the three winding rollers rotate at the same time The winding test line realizes the automatic winding function of resistance test line, current test line and voltage test line, shortens the time required for test line winding, and speeds up the work efficiency of grounding resistance detection.
5、本35kv集电线路安全型防雷击检测系统,通过设置中央处理器、数据库与数据传输平台,接地电阻测试仪检测的接地电阻数据传输至中央处理器,由中央处理器对检测数据进行处理、计算获取均值后通过网络协议上传至数据库中存储,通过数据传输平台读取数据库中的数据内容并进行数据共享,方便管理终端远程对检测数据进行查看、查询与分析,实现检测数据的自动处理、计算、记录与传输。5. This 35kv collector line safety lightning protection detection system, through setting up the central processing unit, database and data transmission platform, the grounding resistance data detected by the grounding resistance tester is transmitted to the central processing unit, and the detection data is processed by the central processing unit After processing and calculating the average value, upload it to the database for storage through the network protocol, read the data content in the database through the data transmission platform and share the data, which is convenient for the management terminal to view, query and analyze the detection data remotely, and realize the automatic detection of the detection data. Processing, calculation, recording and transmission.
附图说明Description of drawings
图1为本发明的整体连接结构示意图;Fig. 1 is a schematic diagram of the overall connection structure of the present invention;
图2为本发明的检测箱结构示意图;Fig. 2 is a schematic structural view of the detection box of the present invention;
图3为本发明的绕线辊连接结构示意图;Fig. 3 is the schematic diagram of the connection structure of winding rollers of the present invention;
图4为本发明的接地盒侧面结构示意图;Fig. 4 is a schematic diagram of the side structure of the grounding box of the present invention;
图5为本发明的引下线拆卸状态结构示意图;Fig. 5 is a schematic diagram of the structure of the dismantled state of the downconductor of the present invention;
图6为本发明的接地盒后侧结构示意图;Fig. 6 is a schematic diagram of the structure of the rear side of the ground box of the present invention;
图7为本发明的引下线连接结构示意图;Fig. 7 is a schematic diagram of the connection structure of the downconductor of the present invention;
图8为本发明的检测系统连接结构示意图;Fig. 8 is a schematic diagram of the connection structure of the detection system of the present invention;
图9为本发明的数据传输逻辑框图。FIG. 9 is a logical block diagram of data transmission in the present invention.
图中:1、检测箱;2、接地盒;21、螺栓;22、活动杆;23、螺孔;24、螺杆;25、驱动电机;26、光伏供电系统;27、连接座;28、滑槽;281、卡槽;29、滑块;291、卡块;210、导电片;211、密封盖;3、管理终端;4、接地电阻测试仪;5、凹槽;6、绕线辊;61、转轴;62、绕线齿轮;63、驱动齿轮;64、绕线电机;65、绕线开关;7、电阻测试线;8、电流测试线;9、电压测试线;10、接地探针;11、中央处理器;12、数据库;13、数据传输平台;14、接地引下线。In the figure: 1. Detection box; 2. Grounding box; 21. Bolt; 22. Movable rod; 23. Screw hole; 24. Screw; 25. Drive motor; 281, card slot; 29, slider; 291, card block; 210, conductive sheet; 211, sealing cover; 3, management terminal; 4, grounding resistance tester; 5, groove; 6, winding roller; 61. Rotating shaft; 62. Winding gear; 63. Driving gear; 64. Winding motor; 65. Winding switch; 7. Resistance test line; 8. Current test line; 9. Voltage test line; 10. Grounding probe ; 11, central processing unit; 12, database; 13, data transmission platform; 14, grounding down conductor.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中,需要说明的是,术语“上”、“下”、“内”、“外”“前端”、“后端”、“两端”、“一端”、“另一端”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“设置有”、“连接”等,应做广义理解,例如“连接”,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "set with", "connected", etc. should be understood in a broad sense, such as "connected", which may be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
如图1至图9所示,本实施例35kv集电线路安全型防雷击检测系统,包括检测箱1、接地盒2与管理终端3,检测箱1内部放置有接地电阻测试仪4,接地电阻测试仪4机在检测过程中由内部DC/AC变换器将直流变为交流的低频恒流,经过辅助接地极与接地引下线14组成回路,接地引下线14上产生交流压降,经辅助接地极送入交流放大器放大,再经过检测传输至表头显示,接地电阻测试仪4一侧开设有凹槽5,凹槽5内部设置有绕线辊6,绕线辊6数量为三个,三个绕线辊6均与检测箱1内壁转动连接,用于对电阻测试线7、电流测试线8与电压测试线9进行绕线收卷,三个绕线辊6上分别缠绕有电阻测试线7、电流测试线8与电压测试线9,电流测试线8与电压测试线9远离绕线辊6的一端连接有接地探针10,接地探针10用于连接电流测试线8与电压测试线9,并将电流测试线8与电压测试线9接地,检测箱1内部还安装有中央处理器11,接地盒2内部设置有接地引下线14。As shown in Figures 1 to 9, the 35kv collector line safety lightning protection detection system in this embodiment includes a detection box 1, a grounding box 2 and a management terminal 3, and a grounding resistance tester 4 is placed inside the detection box 1, and the grounding resistance tester 4 is placed inside the detection box 1. During the detection process of the resistance tester 4, the internal DC/AC converter converts the direct current into the low-frequency constant current of the alternating current, and forms a circuit through the auxiliary grounding electrode and the grounding down-conductor 14, and generates an AC voltage drop on the grounding down-conducting line 14, The auxiliary ground electrode is sent to the AC amplifier for amplification, and then transmitted to the meter display after detection. There is a groove 5 on one side of the ground resistance tester 4, and a winding roller 6 is arranged inside the groove 5. The number of winding rollers 6 is three. One, three winding rollers 6 are all rotatably connected with the inner wall of the detection box 1, and are used for winding and winding the resistance test line 7, the current test line 8 and the voltage test line 9, and the three winding rollers 6 are respectively wound with The resistance test line 7, the current test line 8 and the voltage test line 9, the end of the current test line 8 and the voltage test line 9 away from the winding roller 6 is connected with a grounding probe 10, and the grounding probe 10 is used to connect the current test line 8 and voltage test line 9, and ground the current test line 8 and the voltage test line 9, a central processing unit 11 is also installed inside the detection box 1, and a grounding down conductor 14 is arranged inside the grounding box 2.
具体的,接地电阻测试仪4通过电路与中央处理器11输入端电性连接,接地电阻测试仪4选用4105A型,接地电阻测试仪4检测的接地电阻数据传输至中央处理器11,接地电阻测试仪4需多档调节多次测试接地电阻,获取多个测试数据,由中央处理器11对检测数据进行处理、计算获取均值。Specifically, the grounding resistance tester 4 is electrically connected to the input terminal of the central processing unit 11 through a circuit, the grounding resistance tester 4 is of the 4105A type, and the grounding resistance data detected by the grounding resistance tester 4 is transmitted to the central processing unit 11. The instrument 4 needs to adjust multiple levels to test the grounding resistance multiple times to obtain multiple test data, and the central processing unit 11 processes the test data and calculates and obtains the average value.
进一步的,中央处理器11内包括:Further, the central processing unit 11 includes:
数据库12,用于接收中央处理器11处理后通过网络协议传输过来的检测数据,检测数据即为接地电阻测试仪4现场采集的电阻值;The database 12 is used to receive the detection data transmitted by the network protocol after being processed by the central processing unit 11, and the detection data is the resistance value collected by the ground resistance tester 4 on-site;
数据传输平台13,用于读取数据库12中的数据内容并进行数据共享,可在管理终端3远程对检测数据进行查看、查询与分析;The data transmission platform 13 is used to read the data content in the database 12 and perform data sharing, and the detection data can be viewed, inquired and analyzed remotely at the management terminal 3;
中央处理器11对检测数据进行处理、计算获取均值后通过网络协议上传至数据库12中存储,通过数据传输平台13读取数据库12中的数据内容并进行数据共享,方便管理终端3远程对检测数据进行查看、查询与分析,实现检测数据的自动处理、计算、记录与传输功能。The central processing unit 11 processes the detection data, calculates and obtains the mean value and uploads it to the database 12 for storage through the network protocol, and reads the data content in the database 12 through the data transmission platform 13 and performs data sharing, which is convenient for the management terminal 3 to remotely check the detection data. View, query and analyze, and realize the automatic processing, calculation, recording and transmission functions of detection data.
进一步的,电阻测试线7、电流测试线8与电压测试线9分别缠绕于三个绕线辊6外侧,三个绕线辊6分别对应缠绕电阻测试线7、电流测试线8与电压测试线9,电阻测试线7、电流测试线8与电压测试线9一端电性连接接地电阻测试仪4,电流测试线8与电压测试线9另一端分别连接接地探针10插入地底,电阻测试线7另一端连接接地引下线14,由电流测试线8与电压测试线9经接地探针10接地,电阻测试线7连接接地引下线14,形成测试回路。Further, the resistance test line 7, the current test line 8 and the voltage test line 9 are respectively wound on the outside of the three winding rollers 6, and the three winding rollers 6 are respectively wound on the resistance test line 7, the current test line 8 and the voltage test line 9. One end of the resistance test line 7, the current test line 8 and the voltage test line 9 are electrically connected to the ground resistance tester 4, and the other ends of the current test line 8 and the voltage test line 9 are respectively connected to the grounding probe 10 and inserted into the ground, and the resistance test line 7 The other end is connected to the grounding down conductor 14, the current testing line 8 and the voltage testing line 9 are grounded through the grounding probe 10, and the resistance testing line 7 is connected to the grounding down conductor 14 to form a test loop.
进一步的,绕线辊6中部贯穿设置有转轴61,转轴61底端连接有绕线齿轮62,绕线齿轮62数量为三个,分别对应三个绕线辊6,由于三个绕线齿轮62转动连接时的转动方向不同,因此三个绕线辊6上测试线的缠绕方向不同,需保持三个绕线齿轮62转动时同时处于收卷状态,处于最后侧的绕线齿轮62一侧连接有驱动齿轮63,驱动齿轮63上方连接有绕线电机64,绕线电机64轴端与驱动齿轮63连接,检测箱1上表面处于绕线电机64的上方安装有绕线开关65,通过绕线开关65实现绕线电机64的启停,检测箱1内带有移动电源,由移动电源为绕线电机64供电,三个绕线齿轮62相互啮合形成转动连接,在收卷测试线时,通过绕线电机64带动驱动齿轮63转动,驱动齿轮63带动最后侧的一个绕线齿轮62转动,该绕线齿轮62带动另外两个绕线齿轮62转动,需使三个绕线辊6同时转动收卷测试线,实现电阻测试线7、电流测试线8与电压测试线9的自动收卷功能,在铺设测试线时由操作者牵引,电流测试线8、电压测试线9与电阻测试线7拉动绕线辊6转动。Further, the middle part of the winding roller 6 is provided with a rotating shaft 61, and the bottom end of the rotating shaft 61 is connected with a winding gear 62, and the number of the winding gears 62 is three, corresponding to three winding rollers 6 respectively. Since the three winding gears 62 The direction of rotation is different when rotating and connecting, so the winding directions of the test lines on the three winding rollers 6 are different. It is necessary to keep the three winding gears 62 in the winding state at the same time when rotating, and the winding gear 62 on the rearmost side is connected There is a driving gear 63, the top of the driving gear 63 is connected with a winding motor 64, and the shaft end of the winding motor 64 is connected with the driving gear 63, and a winding switch 65 is installed on the upper surface of the detection box 1 at the top of the winding motor 64. The switch 65 realizes the start and stop of the winding motor 64. There is a mobile power supply in the detection box 1. The mobile power supplies power to the winding motor 64. The three winding gears 62 mesh with each other to form a rotational connection. The winding motor 64 drives the driving gear 63 to rotate, and the driving gear 63 drives a winding gear 62 on the rearmost side to rotate, and the winding gear 62 drives the other two winding gears 62 to rotate. Roll test line to realize the automatic winding function of resistance test line 7, current test line 8 and voltage test line 9. When laying the test line, it is pulled by the operator, and the current test line 8, voltage test line 9 and resistance test line 7 are pulled The winding roller 6 rotates.
进一步的,转轴61底部通过轴承与检测箱1内壁转动连接,转轴61侧壁连接绕线辊6内壁,通过转轴61机构轴承在凹槽5内转动,转轴61带动绕线辊6转动,处于最后侧的绕线齿轮62与驱动齿轮63相啮合形成转动连接,通过绕线电机64带动驱动齿轮63转动,驱动齿轮63带动最后侧的一个绕线齿轮62转动,实现转动传递。Further, the bottom of the rotating shaft 61 is rotationally connected with the inner wall of the detection box 1 through a bearing, the side wall of the rotating shaft 61 is connected to the inner wall of the winding roller 6, and the bearing of the rotating shaft 61 mechanism rotates in the groove 5, and the rotating shaft 61 drives the winding roller 6 to rotate, and is at the end The winding gear 62 on the side meshes with the driving gear 63 to form a rotational connection, and the driving gear 63 is driven by the winding motor 64 to rotate, and the driving gear 63 drives a winding gear 62 on the rearmost side to rotate to realize rotation transmission.
进一步的,接地盒2上下两侧均贯穿设置有螺栓21,通过螺栓21将接地盒2安装在杆塔塔材侧壁,接地盒2内部设置有活动杆22,活动杆22一端内部开设有螺孔23,螺孔23内部设置有螺杆24,螺杆24表面的螺纹与螺孔23相啮合,螺杆24远离活动杆22的一端连接有驱动电机25,驱动电机25实质为带有正反转电路的电机,驱动电机25轴端与螺杆24连接,带动螺杆24转动,接地盒2前侧顶部安装有光伏供电系统26,光伏供电系统26包括光伏组件、光伏支架、蓄电池与逆变器,用于为驱动电机25提供光伏供电,活动杆22另一端连接有连接座27,接地盒2底部中心处开设有滑槽28,滑槽28内部设置有滑块29,接地盒2顶部贯穿设置有导电片210,导电片210材质为铜金属,用于接地引下线14与电阻测试线7之间电性连接,由导电片210先手动与电阻测试线7连接,再自动与接地引下线14连接,无需将电阻测试线7与接地引下线14直接接触连接,进一步增强接地电阻检测的安全性,导电片210上方套设有密封盖211,密封盖211通过铰链与接地盒2顶部铰接,密封盖211用于对导电片210顶部进行密封,避免在不测试的时候导电片210暴露在空气中发生氧化、锈蚀,接地盒2材质为绝缘的PVC塑料,确保接地盒2自身的绝缘性,增加电阻测试线7连接的安全性,同时接地盒2对接地引下线14连接处进行防护,接地盒2呈后侧开口的矩形盒状,接地盒2上下两端通过螺栓21安装于集电线路杆塔的塔材侧壁,方便接地盒2的拆装。Further, the upper and lower sides of the grounding box 2 are provided with bolts 21, and the grounding box 2 is installed on the side wall of the tower material through the bolts 21. The grounding box 2 is provided with a movable rod 22, and one end of the movable rod 22 is provided with a screw hole. 23. There is a screw 24 inside the screw hole 23. The thread on the surface of the screw 24 is engaged with the screw hole 23. The end of the screw 24 away from the movable rod 22 is connected with a drive motor 25. The drive motor 25 is essentially a motor with a forward and reverse circuit. The shaft end of the drive motor 25 is connected to the screw 24 to drive the screw 24 to rotate. A photovoltaic power supply system 26 is installed on the top of the front side of the grounding box 2. The photovoltaic power supply system 26 includes photovoltaic modules, photovoltaic supports, batteries and inverters for driving The motor 25 provides photovoltaic power supply, the other end of the movable rod 22 is connected to a connecting seat 27, a chute 28 is provided at the center of the bottom of the grounding box 2, a slider 29 is arranged inside the chute 28, and a conductive sheet 210 is provided through the top of the grounding box 2. The conductive sheet 210 is made of copper metal, and is used for electrical connection between the grounding down conductor 14 and the resistance test line 7. The conductive sheet 210 is first manually connected to the resistance test line 7, and then automatically connected to the grounding down conductor 14. The resistance test line 7 is directly connected to the grounding down conductor 14 to further enhance the safety of grounding resistance detection. A sealing cover 211 is set above the conductive sheet 210, and the sealing cover 211 is hinged to the top of the grounding box 2 through a hinge. The sealing cover 211 It is used to seal the top of the conductive sheet 210 to avoid oxidation and corrosion of the conductive sheet 210 when it is not exposed to the air. The grounding box 2 is made of insulating PVC plastic to ensure the insulation of the grounding box 2 itself and increase the resistance test. The safety of the connection of line 7, at the same time, the grounding box 2 protects the connection of the grounding down conductor 14. The grounding box 2 is in the shape of a rectangular box with an opening on the rear side. The upper and lower ends of the grounding box 2 are installed on the tower of the current collecting line through bolts 21 The material side wall facilitates the disassembly and assembly of the grounding box 2.
进一步的,活动杆22呈内部中空的圆杆状,螺孔23内径尺寸与螺杆24外径尺寸相适配,活动杆22一端与螺杆24螺纹连接,通过驱动电机25带动螺杆24转动,螺杆24经螺孔23驱动活动杆22横向移动,活动杆22另一端通过连接座27与接地引下线14前侧壁连接,活动杆22经连接座27带动接地引下线14横向移动,使接地引下线14朝向远离杆塔塔材的一侧移动,取消接地引下线14与杆塔塔材的连接,改变了传统接地引下线14与塔材栓接的方式,通过活动杆22移动实现接地引下线14的自动拆装,弥补了人工手动拆装存在触电威胁的缺陷,使防雷检测过程更加安全,连接座27材质为绝缘的PVC塑料,连接座27用于连接活动杆22与接地引下线14,并阻断接地引下线14与活动杆22之间电流流通,避免对驱动电机25造成损坏。Further, the movable rod 22 is in the shape of a hollow round rod, the inner diameter of the screw hole 23 is compatible with the outer diameter of the screw 24, and one end of the movable rod 22 is threadedly connected with the screw 24, and the driving motor 25 drives the screw 24 to rotate, and the screw 24 Drive the movable rod 22 to move laterally through the screw hole 23, the other end of the movable rod 22 is connected with the front side wall of the grounding down conductor 14 through the connecting seat 27, and the movable rod 22 drives the grounding down conductor 14 to move laterally through the connecting seat 27, so that the grounding conductor The down wire 14 moves toward the side away from the tower material, cancels the connection between the ground down conductor 14 and the tower material, changes the traditional way of bolting the ground down conductor 14 and the tower material, and realizes the grounding through the movement of the movable rod 22. The automatic disassembly and assembly of the off-line 14 makes up for the defect that there is an electric shock threat in the manual disassembly and assembly, and makes the lightning protection detection process safer. down-conductor 14, and block the current flow between the grounding down-conductor 14 and the movable rod 22, so as to avoid damage to the driving motor 25.
新一步的,滑块29内壁与接地引下线14外侧壁连接,,接地引下线14贯穿滑块29并与滑块29内壁连接,滑块29宽度尺寸与滑槽28内壁宽度尺寸相适配,滑块29与滑槽28内壁形成滑动连接,在受活动杆22推拉过程中,接地引下线14带动滑块29卡于滑槽28内横向移动,此时滑块29既用于限制活动杆22随螺杆24转动,又用于增强接地引下线14横向移动的稳定性。In a new step, the inner wall of the slider 29 is connected to the outer wall of the grounding down conductor 14, the grounding down conductor 14 runs through the slider 29 and is connected to the inner wall of the slider 29, and the width of the slider 29 is suitable for the width of the inner wall of the chute 28 Matching, the slider 29 forms a sliding connection with the inner wall of the chute 28. During the push and pull process of the movable rod 22, the grounding down conductor 14 drives the slider 29 to be stuck in the chute 28 to move laterally. At this time, the slider 29 is used to limit The movable rod 22 rotates with the screw rod 24 and is used to enhance the stability of the lateral movement of the grounding downconductor 14 .
更进一步的,滑槽28两侧内壁均开设有卡槽281,滑块29两侧连接有卡块291,卡块291与滑块29一体连接,卡块291插入卡槽281内部,卡块291卡于卡槽281内形成滑动连接,通过卡块291增加滑块29在滑槽28内滑动的稳定性。Furthermore, the inner wall on both sides of the chute 28 is provided with a card slot 281, and the two sides of the slider 29 are connected with a card block 291. The sliding connection is formed by being stuck in the slot 281 , and the stability of the sliding block 29 sliding in the sliding slot 28 is increased through the locking block 291 .
本实施例的使用方法为:使用者在实际进行35kv集电线路杆塔防雷接地电阻检测的情况下,首先将检测箱1稳定放置于地面,打开检测箱1,拉动凹槽5中的电流测试线8,电流测试线8拉动绕线辊6转动,使该绕线辊6经绕线齿轮62带动另外两个绕线辊6转动,将电流测试线8、电压测试线9与电阻测试线7分别牵引铺设,将电压测试线9与电流测试线8铺设检测保持在一米以上,然后在电流测试线8与电压测试线9的末端分别连接两个接地探针10,并借用锤子将接地探针10打入地底,打入深度保持在4/5以上,然后打开接地盒2顶部的密封盖211,此时导电片210暴露出,将电阻测试线7末端连接导电片210顶部,然后启动驱动电机25,驱动电机25带动螺杆24转动,螺杆24经螺孔23驱动活动杆22横向移动,活动杆22经连接座27带动接地引下线14横向移动,此时滑块29受接地引下线14的推力卡于滑槽28内横向滑动,使接地引下线14朝向远离杆塔塔材的一侧移动,直至接地引下线14顶部接触导电片210,此时完成测试回路的连接,然后开启检测箱1电源,调节接地电阻测试仪4的档位多次检测接地电阻,接地电阻测试仪4的检测数据传输至中央处理器11,由中央处理器11对多个检测数据进行处理、计算获取均值后通过网络协议上传至数据库12中存储,通过数据传输平台13读取数据库12中的数据内容并进行数据共享,方便管理终端3远程对检测数据进行查看、查询与分析,检测完毕后由驱动电机25反转驱动活动杆22移动复位,推动接地引下线14与塔材接触,此时接地引下线14与导电片210分离,检测回路断开,然后取消电阻测试线7的连接,将接地探针10取出取消电流测试线8、电压测试线9的接地,按压绕线开关65,绕线电机64启动带动驱动齿轮63转动,驱动齿轮63带动最后侧的一个绕线齿轮62转动,该绕线齿轮62带动另外两个绕线齿轮62转动,使三个绕线辊6同时转动对电阻测试线7、电流测试线8与电压测试线9进行自动收卷,收卷完毕后关闭绕线开关65,绕线电机64停止转动,然后将接地探针10放置于凹槽5内,关闭检测箱1完成一次接地电阻检测。The method of use in this embodiment is as follows: when the user actually detects the lightning protection grounding resistance of a 35kv collector line tower, first place the detection box 1 stably on the ground, open the detection box 1, and pull the current test in the groove 5 Line 8, the current test line 8 pulls the winding roller 6 to rotate, so that the winding roller 6 drives the other two winding rollers 6 to rotate through the winding gear 62, and the current test line 8, the voltage test line 9 and the resistance test line 7 Pull and lay separately, keep the voltage test line 9 and the current test line 8 laying detection at more than one meter, then connect two grounding probes 10 to the ends of the current test line 8 and the voltage test line 9 respectively, and use a hammer to place the grounding probes Drive the needle 10 into the ground, keep the penetration depth above 4/5, then open the sealing cover 211 on the top of the grounding box 2, at this time the conductive sheet 210 is exposed, connect the end of the resistance test line 7 to the top of the conductive sheet 210, and then start the drive Motor 25, the drive motor 25 drives the screw rod 24 to rotate, the screw rod 24 drives the movable rod 22 to move laterally through the screw hole 23, the movable rod 22 drives the grounding down conductor 14 to move laterally through the connecting seat 27, and at this time, the slider 29 is driven by the grounding down conductor The thrust of 14 slides laterally in the chute 28, so that the grounding downconductor 14 moves toward the side away from the tower material until the top of the grounding downconductor 14 touches the conductive sheet 210. At this time, the connection of the test circuit is completed, and then it is turned on Check the power supply of the detection box 1, adjust the gear position of the ground resistance tester 4 to detect the ground resistance multiple times, and transmit the detection data of the ground resistance tester 4 to the central processing unit 11, and the central processing unit 11 processes and calculates multiple detection data. After the average value is uploaded to the database 12 for storage through the network protocol, the data content in the database 12 is read through the data transmission platform 13 and data sharing is performed, so that the management terminal 3 can remotely view, query and analyze the detection data. The motor 25 reversely drives the movable rod 22 to move and reset, and pushes the grounding downconductor 14 to contact the tower material. At this time, the grounding downconductor 14 is separated from the conductive sheet 210, the detection circuit is disconnected, and then the connection of the resistance test line 7 is canceled, and the The grounding probe 10 is taken out to cancel the grounding of the current test line 8 and the voltage test line 9, press the winding switch 65, the winding motor 64 starts to drive the driving gear 63 to rotate, and the driving gear 63 drives a winding gear 62 on the rearmost side to rotate. The winding gear 62 drives the other two winding gears 62 to rotate, so that the three winding rollers 6 rotate simultaneously to automatically rewind the resistance test line 7, the current test line 8 and the voltage test line 9, and close the winding after the winding is completed. Switch 65, the winding motor 64 stops rotating, then place the grounding probe 10 in the groove 5, close the detection box 1 to complete a grounding resistance detection.
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118937804A (en) * | 2024-10-15 | 2024-11-12 | 中建八局第一建设有限公司 | A construction engineering electrical grounding resistance detection device |
| CN119322227A (en) * | 2024-12-16 | 2025-01-17 | 甘肃安特防雷检测有限公司 | Lightning protection detection device for urban building |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526423A (en) * | 2016-11-16 | 2017-03-22 | 中国电力科学研究院 | Method and system for informatization management for transmission line tower grounding resistance data |
| CN207780117U (en) * | 2017-09-09 | 2018-08-28 | 广西电网有限责任公司电力科学研究院 | A kind of pole tower ground resistance measuring device of tower grounding downlead free of demolition |
| CN213517362U (en) * | 2020-10-09 | 2021-06-22 | 重庆睿虓电子科技有限公司 | Portable lightning protection detection device |
| CN113702671A (en) * | 2021-08-24 | 2021-11-26 | 国网河南省电力公司平顶山供电公司 | Tower grounding wire connecting device convenient for grounding resistance detection |
| CN218037066U (en) * | 2022-08-02 | 2022-12-13 | 刘艳玲 | A mobile building lightning protection detection device |
-
2023
- 2023-05-08 CN CN202310510512.1A patent/CN116593786A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526423A (en) * | 2016-11-16 | 2017-03-22 | 中国电力科学研究院 | Method and system for informatization management for transmission line tower grounding resistance data |
| CN207780117U (en) * | 2017-09-09 | 2018-08-28 | 广西电网有限责任公司电力科学研究院 | A kind of pole tower ground resistance measuring device of tower grounding downlead free of demolition |
| CN213517362U (en) * | 2020-10-09 | 2021-06-22 | 重庆睿虓电子科技有限公司 | Portable lightning protection detection device |
| CN113702671A (en) * | 2021-08-24 | 2021-11-26 | 国网河南省电力公司平顶山供电公司 | Tower grounding wire connecting device convenient for grounding resistance detection |
| CN218037066U (en) * | 2022-08-02 | 2022-12-13 | 刘艳玲 | A mobile building lightning protection detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118937804A (en) * | 2024-10-15 | 2024-11-12 | 中建八局第一建设有限公司 | A construction engineering electrical grounding resistance detection device |
| CN118937804B (en) * | 2024-10-15 | 2024-12-10 | 中建八局第一建设有限公司 | Building engineering electric ground resistance detection device |
| CN119322227A (en) * | 2024-12-16 | 2025-01-17 | 甘肃安特防雷检测有限公司 | Lightning protection detection device for urban building |
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