CN205791410U - All insulation 35kV cable rod rising device - Google Patents
All insulation 35kV cable rod rising device Download PDFInfo
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- CN205791410U CN205791410U CN201620511490.6U CN201620511490U CN205791410U CN 205791410 U CN205791410 U CN 205791410U CN 201620511490 U CN201620511490 U CN 201620511490U CN 205791410 U CN205791410 U CN 205791410U
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Abstract
本实用新型涉及一种全绝缘35kV电缆登杆装置，包括电杆和三相电缆，三相电缆通过包设有耐张线夹绝缘罩的耐张线夹固定架设在电杆上，电杆上设有三相电缆下引线的横担支架，横担支架包括横担绝缘子，套设有绝缘套管的三相电缆下引线通过横担绝缘子搭接与包设有电缆接头绝缘罩的跨伞型电缆接头电连接，绝缘套管包括若干首尾衔接的绝缘套管单元，跨伞型电缆接头上方的电杆上设有横置式避雷器，横置式避雷器包括避雷器接地端和包设有避雷器绝缘罩的避雷器高压端，跨伞型电缆接头的上引线上设有包设接地挂环绝缘罩的接地挂环。本实用新型采用在高压线路上包设绝缘罩的方式提高高压线路的绝缘安全性，具有线路全绝缘，高压输电绝缘安全性能高的特点。
The utility model relates to a fully insulated 35kV cable pole climbing device, which includes a pole and a three-phase cable. The cross-arm bracket with the lower lead of the three-phase cable, the cross-arm support includes a cross-arm insulator, and the lower lead of the three-phase cable covered with an insulating sleeve is lapped by the cross-arm insulator and the cross-umbrella cable covered with a cable joint insulation cover The joints are electrically connected, and the insulating sleeve includes a number of insulating sleeve units connected end to end. A horizontal lightning arrester is installed on the pole above the umbrella-shaped cable joint. At the end, the upper lead of the umbrella-type cable joint is provided with a grounding ring wrapped with an insulating cover of the grounding ring. The utility model adopts the method of wrapping an insulating cover on the high-voltage line to improve the insulation safety of the high-voltage line, and has the characteristics of full insulation of the line and high insulation safety performance of high-voltage transmission.
Description
技术领域technical field
本实用新型涉及一种35kV电缆登杆装置，特别涉及一种全绝缘35kV电缆登杆装置，属于高压电缆登杆装置领域。The utility model relates to a 35kV cable climbing rod device, in particular to a fully insulated 35kV cable climbing rod device, which belongs to the field of high voltage cable climbing rod devices.
背景技术Background technique
35kV架空线路幅员辽阔、输送功率大，是配网输电的脊梁骨。由于35kV电压等级导线额定电压高，如同样采用10kV绝缘导线制造工艺在裸导线表面加绝缘层，导线重量将成倍增长，导致输电线路绝缘子抗弯强度、电杆抗拉强度同步成倍增长，从而造成目前架空输电线路结构无法承载的状态。正因为以上诸多原因，所以到目前为止，全国35kV及以上输电架空线路均仍采用裸导线。随着农村城镇化建设不断推进，原35kV架空输电线路旁出现大量道路基础建设、施工工地及高层建筑，从而造成近年来由于施工机具、高层抛物、风筝、气球等碰撞35kV架空裸导线引起触电、短路、跳闸等影响人身及输电安全的事故时有发生。给人民生活和电网安全带来重大危害。The 35kV overhead line has a vast territory and a large transmission power, and it is the backbone of the distribution network transmission. Due to the high rated voltage of the 35kV voltage level wire, if the same 10kV insulated wire manufacturing process is used to add an insulating layer to the surface of the bare wire, the weight of the wire will double, resulting in a double increase in the bending strength of the transmission line insulator and the tensile strength of the pole. As a result, the current overhead transmission line structure cannot bear the load. Because of the above reasons, so far, the national 35kV and above transmission overhead lines still use bare conductors. With the continuous advancement of rural urbanization, a large number of road infrastructure, construction sites and high-rise buildings have appeared next to the original 35kV overhead transmission line, which has caused electric shock, Accidents such as short circuit and tripping that affect personal safety and transmission safety occur from time to time. It will bring great harm to people's life and power grid security.
目前，35kV电缆登杆常规装置结构是：杆顶为上地线，依次往下为三相架空裸导线、裸露下引线、横担支架、绝缘子、避雷器及其安装平台和地下电缆接头固定架。电力通过三相架空裸导线从电源侧传输过来，经过线夹、裸露下引线连接到电缆接头、地下电缆，最终输送到用户。为了确保供电安全，中间必须用绝缘子加以支撑起到绝缘和连接作用，同时也必须配置避雷器，预防过电压对地下电缆的损害。从该结构方案看，35kV电缆登杆架空线路和地下电缆之间的连接方式属于敞开式结构。该敞开式电缆登杆装置离地较近，这一传统结构对于高层抛物、风筝、气球、蛇类等的防护能力较差，也容易造成裸露下引线与普通柱式避雷器的接线端子因异物碰线而导致短路跳闸，从而影响输电线路的安全可靠运行，而且由于一条35kV架空输电线路需给多条10kV输电线路输电，所以一旦一条35kV输电线路受损会造成社会及经济极大影响。At present, the structure of the conventional installation for 35kV cable climbing poles is: the top of the pole is the upper ground wire, followed by three-phase overhead bare wires, exposed lower leads, cross-arm brackets, insulators, lightning arresters and their installation platforms, and underground cable joint fixing frames. Power is transmitted from the power supply side through three-phase overhead bare wires, connected to cable joints and underground cables through clamps, exposed lower leads, and finally delivered to users. In order to ensure the safety of power supply, insulators must be used in the middle to support insulation and connection, and lightning arresters must also be configured to prevent damage to underground cables caused by overvoltage. Judging from the structural scheme, the connection mode between the 35kV cable boarding pole overhead line and the underground cable belongs to an open structure. The open cable climbing pole device is relatively close to the ground. This traditional structure has poor protection against high-rise parabolic objects, kites, balloons, snakes, etc., and it is also easy to cause the exposed lower lead wires to collide with the terminals of ordinary post arresters due to foreign objects. The short-circuit tripping of the line will affect the safe and reliable operation of the transmission line, and because a 35kV overhead transmission line needs to transmit power to multiple 10kV transmission lines, once a 35kV transmission line is damaged, it will cause great social and economic impact.
发明内容Contents of the invention
本实用新型全绝缘35kV电缆登杆装置公开了新的方案，采用在高压线路上包设绝缘罩的方式提高高压线路的绝缘安全性，解决了现有35kV架空线路采用裸导线敞开式结构绝缘安全性差，易发安全事故的问题。The utility model fully insulated 35kV cable climbing pole device discloses a new scheme, which improves the insulation safety of the high-voltage line by wrapping an insulating cover on the high-voltage line, and solves the poor insulation safety of the existing 35kV overhead line using an open structure with bare wires , prone to safety accidents.
本实用新型全绝缘35kV电缆登杆装置包括电杆和三相电缆，三相电缆通过耐张线夹固定架设在电杆上，耐张线夹上包设有耐张线夹绝缘罩，电杆的上端至下端依次设有三相电缆下引线的横担支架，横担支架包括横担绝缘子和横担底座架，横担底座架固定在电杆上，横担绝缘子固定在横担底座架上，三相电缆下引线通过横担绝缘子搭接与跨伞型电缆接头电连接，跨伞型电缆接头与负载端电缆电连接，三相电缆下引线上套设有绝缘套管，绝缘套管包括若干首尾衔接的绝缘套管单元，跨伞型电缆接头包设有电缆接头绝缘罩，跨伞型电缆接头上方的电杆上设有横置式避雷器安装支架，横置式避雷器安装支架上设有与三相电缆下引线对应的横置式避雷器，横置式避雷器包括避雷器接地端和避雷器高压端，横置式避雷器通过避雷器接地端与横置式避雷器安装支架形成横置式避雷器从横置状态到垂置状态的旋转可紧固铰接，避雷器高压端的外部包覆设有避雷器绝缘罩，横置式避雷器通过避雷器高压端与三相电缆下引线电连接形成与跨伞型电缆接头并联的电连接方式，跨伞型电缆接头的上引线上设有接地挂环，接地挂环上包设有接地挂环绝缘罩。The utility model fully insulated 35kV cable pole climbing device includes a pole and a three-phase cable. The three-phase cable is fixed and erected on the pole through a tension clamp. The tension clamp is covered with a tension clamp insulation cover. The pole The upper end to the lower end of the three-phase cable is provided with a cross-arm bracket in turn. The cross-arm bracket includes a cross-arm insulator and a cross-arm base frame. The cross-arm base frame is fixed on the pole, and the cross-arm insulator is fixed on the cross-arm base frame. The lower lead of the three-phase cable is electrically connected to the cross-umbrella cable joint through the lap joint of the cross-arm insulator, and the cross-umbrella cable joint is electrically connected to the load end cable. The lower lead of the three-phase cable is covered with an insulating sleeve, which includes several Insulating bushing unit connected from end to end, cable joint insulation cover is provided on the umbrella-type cable joint, horizontal arrester installation bracket is installed on the pole above the umbrella-type cable joint, and three-phase arrester installation bracket is installed on the horizontal arrester installation bracket. The horizontal arrester corresponding to the lower lead of the cable, the horizontal arrester includes the ground terminal of the arrester and the high voltage end of the arrester. Solid hinge, the outer cover of the high voltage end of the arrester is provided with an insulating cover of the arrester, and the horizontal arrester is electrically connected with the lower lead of the three-phase cable through the high voltage end of the arrester to form an electrical connection in parallel with the cross-umbrella cable joint. A grounding ring is arranged on the lead, and an insulating cover of the grounding ring is wrapped on the grounding ring.
本实用新型全绝缘35kV电缆登杆装置采用在高压线路上包设绝缘罩的方式提高高压线路的绝缘安全性，具有线路全绝缘，高压输电绝缘安全性能高的特点。The fully insulated 35kV cable climbing pole device of the utility model adopts the method of wrapping an insulating cover on the high-voltage line to improve the insulation safety of the high-voltage line, and has the characteristics of full insulation of the line and high insulation safety performance of high-voltage transmission.
附图说明Description of drawings
图1是本实用新型全绝缘35kV电缆登杆装置的示意图。Fig. 1 is a schematic diagram of a fully insulated 35kV cable climbing rod device of the present invention.
图2是绝缘套管的示意图。Fig. 2 is a schematic diagram of an insulating sleeve.
图2-1是图2中绝缘套管的首连接段A-A剖面示意图。Fig. 2-1 is a schematic cross-sectional view of the first connection section A-A of the insulating bushing in Fig. 2 .
图2-2是图2中绝缘套管的套管段B-B剖面示意图。Fig. 2-2 is a schematic cross-sectional view of the bushing section B-B of the insulating bushing in Fig. 2 .
图2-3是图2中绝缘套管的尾连接段C-C剖面示意图。Fig. 2-3 is a schematic cross-sectional view of the tail connection section C-C of the insulating sleeve in Fig. 2 .
图3是避雷器绝缘罩装配状态下的剖视示意图。Fig. 3 is a schematic cross-sectional view of the lightning arrester insulated cover assembled state.
图3-1是图3中避雷器绝缘罩改进型装配状态下的示意图。Fig. 3-1 is a schematic diagram of the improved assembly state of the insulating cover of the lightning arrester in Fig. 3 .
图3-2是图3-1中避雷器绝缘罩改进型装配状态下A-A剖面示意图。Figure 3-2 is a schematic cross-sectional view of A-A in the improved assembly state of the insulating cover of the arrester in Figure 3-1.
图4是耐张线夹绝缘罩装配状态下的剖视示意图。Fig. 4 is a schematic cross-sectional view of an assembled state of the insulation cover of the tension clamp.
图4-1是图4中耐张线夹绝缘罩装配状态下A-A剖面示意图。Figure 4-1 is a schematic cross-sectional view of A-A in the assembled state of the strain clamp insulation cover in Figure 4 .
图5是电缆接头绝缘罩装配状态下的剖视示意图。Fig. 5 is a schematic cross-sectional view of the assembled state of the insulating cover of the cable joint.
图5-1是图5中电缆接头绝缘罩装配状态下A-A剖面示意图。Fig. 5-1 is a schematic cross-sectional view of A-A in the assembled state of the cable joint insulation cover in Fig. 5 .
图6是接地挂环绝缘罩装配状态下的剖视示意图。Fig. 6 is a schematic cross-sectional view of the assembled state of the insulating cover of the grounding ring.
图6-1是图6中接地挂环绝缘罩装配状态下A-A剖面示意图。Figure 6-1 is a schematic cross-sectional view of A-A in the assembled state of the grounding ring insulation cover in Figure 6 .
其中，100是耐张线夹绝缘罩，110是耐张线夹绝缘罩包边甲，120是耐张线夹绝缘罩包边乙，130是防松条扣结构E，140是防松条扣结构F，200是绝缘套管，210是首连接段，211是尾连接段包边结构插槽腔，212是锁紧通孔结构，220是套管段，221是加强筋环，230是尾连接段，240是绝缘套管单元整体包边甲，250是绝缘套管单元整体包边乙，260是防松条扣结构A，270是防松条扣结构B，300是避雷器绝缘罩，310是跨伞端绝缘罩，320是引下线端绝缘罩，330是连接檐边甲，340引下线端绝缘罩外端部分的连接檐边乙，350是防松条扣结构C，360是防松条扣结构D，400是电缆接头绝缘罩，410是电缆下引线绝缘罩，420是跨伞段绝缘罩，430是电缆接头绝缘罩整体包边甲，440是电缆接头绝缘罩整体包边乙，450是防松条扣结构G，460是防松条扣结构H，500是接地挂环绝缘罩，510是电缆下引线绝缘罩，520是挂环绝缘罩，530是电缆下引线绝缘罩包边甲，540是电缆下引线绝缘罩包边乙，550是防松条扣结构I，560是防松条扣结构J。Among them, 100 is the insulating cover of the strain clamp, 110 is the edge A of the insulating cover of the strain clamp, 120 is the edge B of the insulating cover of the strain clamp, 130 is the anti-loose buckle structure E, and 140 is the anti-loose buckle Structure F, 200 is the insulating sleeve, 210 is the first connection section, 211 is the slot cavity of the tail connection section, 212 is the locking through hole structure, 220 is the sleeve section, 221 is the rib ring, 230 is the tail connection 240 is the overall wrapping A of the insulating bushing unit, 250 is the whole wrapping B of the insulating bushing unit, 260 is the anti-loose buckle structure A, 270 is the anti-loose buckle structure B, 300 is the insulating cover of the arrester, and 310 is 320 is the insulation cover of the down-conductor end, 330 is the connecting eave edge A, 340 is the connection eave edge B of the outer part of the down-conductor end insulation cover, 350 is the anti-loose buckle structure C, and 360 is the anti-loosening bar buckle structure C. Loose buckle structure D, 400 is the insulation cover of the cable joint, 410 is the insulation cover of the lower lead of the cable, 420 is the insulation cover of the umbrella section, 430 is the overall edge wrapping of the cable joint insulation cover, and 440 is the overall edge wrapping B of the cable joint insulation cover , 450 is the anti-loose buckle structure G, 460 is the anti-loose buckle structure H, 500 is the insulating cover of the grounding ring, 510 is the insulating cover of the lower lead of the cable, 520 is the insulating cover of the hanging ring, and 530 is the insulating cover of the lower lead of the cable Side A, 540 is the edge wrapping B of the cable lower lead insulation cover, 550 is the anti-loose bar buckle structure I, and 560 is the anti-loose bar buckle structure J.
具体实施方式detailed description
以下结合附图，对本实用新型作进一步说明。Below in conjunction with accompanying drawing, the utility model is further described.
如图1所示，本实用新型全绝缘35kV电缆登杆装置的示意图。全绝缘35kV电缆登杆装置包括电杆和三相电缆，三相电缆通过耐张线夹固定架设在电杆上，耐张线夹上包设有耐张线夹绝缘罩，电杆的上端至下端依次设有三相电缆下引线的横担支架，横担支架包括横担绝缘子和横担底座架，横担底座架固定在电杆上，横担绝缘子固定在横担底座架上，三相电缆下引线通过横担绝缘子搭接与跨伞型电缆接头电连接，跨伞型电缆接头与负载端电缆电连接，三相电缆下引线上套设有绝缘套管，绝缘套管包括若干首尾衔接的绝缘套管单元，跨伞型电缆接头包设有电缆接头绝缘罩，跨伞型电缆接头上方的电杆上设有横置式避雷器安装支架，横置式避雷器安装支架上设有与三相电缆下引线对应的横置式避雷器，横置式避雷器包括避雷器接地端和避雷器高压端，横置式避雷器通过避雷器接地端与横置式避雷器安装支架形成横置式避雷器从横置状态到垂置状态的旋转可紧固铰接，避雷器高压端的外部包覆设有避雷器绝缘罩，横置式避雷器通过避雷器高压端与三相电缆下引线电连接形成与跨伞型电缆接头并联的电连接方式，跨伞型电缆接头的上引线上设有接地挂环，接地挂环上包设有接地挂环绝缘罩。上述方案在传统裸导线的基础上，通过在高压线缆上及其相关部件上增设全覆盖绝缘部件，达到提高装置整体绝缘性能的目的，同时采用了横置的可旋转并加装跨伞绝缘罩的避雷器，解决了35kV及以上高压线路绝缘性能差的问题，同时便于装置维护，避免了由此导致的安全事故。As shown in Fig. 1, the schematic diagram of the fully insulated 35kV cable climbing pole device of the present invention. The fully insulated 35kV cable pole installation includes a pole and a three-phase cable. The three-phase cable is fixed and erected on the pole through a tension clamp. The lower end is provided with a cross-arm bracket for the lower lead of the three-phase cable in turn. The cross-arm bracket includes a cross-arm insulator and a cross-arm base frame. The cross-arm base frame is fixed on the pole, and the cross-arm insulator is fixed on the cross-arm base frame. The three-phase cable The lower lead is electrically connected to the cross-umbrella cable joint through the lap joint of the cross-arm insulator, and the cross-umbrella cable joint is electrically connected to the load end cable. The lower lead of the three-phase cable is covered with an insulating sleeve. Insulation bushing unit, the cable joint insulation cover is provided in the umbrella-type cable joint, the horizontal lightning arrester mounting bracket is installed on the pole above the umbrella-shaped cable joint, and the horizontal lightning arrester mounting bracket is provided with the lower lead wire of the three-phase cable. Corresponding to the horizontal arrester, the horizontal arrester includes the arrester grounding terminal and the arrester high-voltage end, and the horizontal arrester forms a fastening hinge for the horizontal arrester from the horizontal state to the vertical state through the arrester grounding end and the horizontal arrester mounting bracket. The outer cover of the high-voltage end of the arrester is provided with an insulating cover of the arrester. The horizontal arrester is electrically connected to the lower lead of the three-phase cable through the high-voltage end of the arrester to form an electrical connection in parallel with the cross-umbrella cable joint. The upper lead of the cross-umbrella cable joint is set There is a grounding ring, and the grounding ring is covered with an insulating cover for the grounding ring. On the basis of the traditional bare wires, the above scheme achieves the purpose of improving the overall insulation performance of the device by adding full-covering insulating parts on the high-voltage cables and related components. The lightning arrester with cover solves the problem of poor insulation performance of 35kV and above high-voltage lines, and at the same time facilitates device maintenance and avoids safety accidents caused by it.
架空线路绝缘化概念已经提出了较长时间，在10kV输配电架空线路上得到了广泛应用，也取得了比较理想的效果，但是在35kV输配电架空线路上的应用还处于摸索阶段。这主要是因为10kV输配电架空线路用的常规结构型式的绝缘罩在35kV输配电架空线路应用时有几个难点：一是由于运行电压的提高，要达到安全的绝缘性能，绝缘罩的厚度就要增加，随之而来的就是成本的增加和架空线路重量的大幅度增加，引起一连串的后续问题。二是随着电压的升高，发生沿面闪络的可能性远远大于击穿闪络，常规结构的绝缘罩不能满足这方面的要求。现有的10kV架空线路使用的绝缘套管是一个截面呈“Ω”形的开口套管结构，通过开口处的销钉旋紧锁闭。这种结构应用在35kV输电架空线路上的一个突出的问题就是绝缘套管的搭边较短，容易发生沿面闪络。为了解决这个问题，本方案采用了“回”形迷宫式绝缘套管。The concept of overhead line insulation has been proposed for a long time, and it has been widely used on 10kV transmission and distribution overhead lines, and has achieved relatively ideal results, but the application on 35kV transmission and distribution overhead lines is still in the exploration stage. This is mainly because the insulation cover of the conventional structure type used for 10kV transmission and distribution overhead lines has several difficulties in the application of 35kV transmission and distribution overhead lines: First, due to the increase in operating voltage, to achieve safe insulation performance, the insulation cover Thickness is about to increase, which is accompanied by an increase in cost and a substantial increase in the weight of overhead lines, causing a series of subsequent problems. Second, as the voltage increases, the possibility of flashover along the surface is far greater than that of breakdown flashover, and the insulating cover with conventional structure cannot meet the requirements in this respect. The insulating bushing used in the existing 10kV overhead line is an open bushing structure with an "Ω"-shaped cross section, which is screwed and locked by a pin at the opening. A prominent problem when this structure is applied to 35kV transmission overhead lines is that the overlapping edges of the insulating bushings are short, which is prone to flashover along the surface. In order to solve this problem, this scheme adopts the "back" shape labyrinth insulating sleeve.
如图2所示，本方案绝缘套管的解决方案，即绝缘套管单元包括首连接段、套管段和尾连接段，首连接段、套管段和尾连接段依次无缝连通形成绝缘套管单元整体。绝缘套管单元整体是侧面沿轴向开口的套管结构，绝缘套管单元整体的侧面开口的一端设有绝缘套管单元整体包边甲，绝缘套管单元整体的侧面开口的另一端设有绝缘套管单元整体包边乙，绝缘套管单元整体包边乙沿绝缘套管单元整体包边甲的边缘折叠包覆在绝缘套管单元整体包边甲外表面上形成“回”形迷宫式绝缘套管单元整体包边结构。绝缘套管单元整体包边乙与绝缘套管单元整体包边甲外表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构A，绝缘套管单元整体包边甲外表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构A，压钉条结构A与沉坑槽结构A压合形成防松条扣结构A。绝缘套管单元整体包边乙的套管段和尾连接段部分与绝缘套管单元整体包边甲的套管段和尾连接段部分的内表面结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构B，绝缘套管单元整体包边甲的套管段和尾连接段部分的内表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构B，压钉条结构B与沉坑槽结构B压合形成防松条扣结构B。如图2-1、2、3所示，上述“回”形迷宫式包边结构具体是一侧包边(较长边)翻折将另一侧包边(较短边)夹包在其中从而形成回转的结合面，这种包边结构并不限于图中示出的一层夹包，还可以是在一层夹包的基础上再次折叠形成多层夹包的结构，即将上述“回”形绝缘包边结构再次折叠形成多层迷宫式包边结构。上述“回”形包边结构增加了绝缘套管内表面长度，从而延长了沿面闪络长度，有效改善了绝缘套管的安全性能，而且还克服了现有10kV架空线路绝缘套管锁闭结构销钉孔处应力集中从而降低结构机械性能导致绝缘套管容易开裂的问题。上述“回”形绝缘包边结构可以采用绝缘胶粘合形成一次性的封闭结构，但是这种结构可维护性较差，无法拆卸维护，为了解决这个问题，本方案公开了上述防松条扣结构来实现包边的牢固结合，这种连续性的压合结构使得绝缘套管的封装操作近似拉链过程，既具有操作方便性，又提高了封装的密封性，同时封装结构稳定不易开缝脱落，从而改善了“回”形迷宫式绝缘包边结构的可维护性，使得安装和拆卸都比较方便，而且没有改变绝缘套管的套管本体结构。As shown in Figure 2, the solution of the insulating bushing of this scheme, that is, the insulating bushing unit includes the first connecting section, the bushing section and the tail connecting section, and the first connecting section, the bushing section and the tail connecting section are sequentially seamlessly connected to form an insulating bushing unit as a whole. The insulating bushing unit as a whole is a bushing structure with side openings along the axial direction. One end of the integral side opening of the insulating bushing unit is provided with an integral wrapping armor of the insulating bushing unit, and the other end of the integral side opening of the insulating bushing unit is provided with The overall wrapping of the insulating bushing unit B, the integral wrapping B of the insulating bushing unit is folded and covered on the outer surface of the integral wrapping A of the insulating bushing unit along the edge of the integral wrapping A of the insulating bushing unit to form a "back"-shaped labyrinth The overall wrapping structure of the insulating sleeve unit. Insulation bushing unit overall wrapping B and insulating bushing unit integral wrapping A outer surface coating joint surface is provided with a riding-shoe-shaped crimping strip structure A extending in the axial direction, and insulating bushing unit integral wrapping The outer surface of the armor is provided with a sinking groove structure A extending in the axial direction and having a horseshoe-shaped cross-section. The casing section and the tail connecting section of the insulating bushing unit integrally encased B are combined with the inner surface of the casing section and the tail connecting section of the insulating bushing unit A integrally encased. The nail-shaped strip structure B, the inner surface of the bushing section and the tail connecting section of the insulating sleeve unit as a whole is provided with a horseshoe-shaped sinking groove structure B extending in the axial direction, and the nail strip structure B is pressed together with sinkhole groove structure B to form anti-loosening bar buckle structure B. As shown in Figure 2-1, 2, and 3, the above-mentioned "back" shaped labyrinth wrapping structure is specifically that one side wrapping (longer side) is folded and the other side wrapping (shorter side) is sandwiched in it Thereby forming a turning joint surface, this hemming structure is not limited to the one-layer sandwich shown in the figure, and can also be folded again on the basis of a layer of sandwich to form a multi-layer sandwich structure, that is, the above-mentioned "back The "shaped insulation wrapping structure is folded again to form a multi-layer labyrinth wrapping structure. The above-mentioned "back"-shaped wrapping structure increases the length of the inner surface of the insulating bushing, thereby extending the length of flashover along the surface, effectively improving the safety performance of the insulating bushing, and also overcoming the locking structure of the existing 10kV overhead line insulating bushing. The stress concentration at the hole reduces the mechanical properties of the structure and leads to the problem that the insulating sleeve is easy to crack. The above-mentioned "back"-shaped insulating hemming structure can be bonded with insulating glue to form a one-time closed structure, but this structure has poor maintainability and cannot be disassembled for maintenance. In order to solve this problem, this solution discloses the above-mentioned anti-loosening bar structure to realize the firm combination of wrapping, this continuous pressing structure makes the packaging operation of the insulating sleeve similar to the zipper process, which not only has the convenience of operation, but also improves the sealing performance of the package, and at the same time the package structure is stable and not easy to crack and fall off , thereby improving the maintainability of the "back"-shaped labyrinth insulation wrapping structure, making installation and disassembly more convenient, and the casing body structure of the insulation casing is not changed.
为了满足35kV输电架空线路的绝缘全覆盖要求，本方案的绝缘套管采用了标准管套接的方案，即采用多根标准的绝缘套管相互首尾套接的方式实现线缆的全覆盖。为了实现上述技术目的，本方案的绝缘套管设计成可以首尾嵌套的方案，即首连接段的内径大于尾连接段的内径，绝缘套管单元整体包边乙的首连接段部分与绝缘套管单元整体包边甲的首连接段部分的内表面间设有尾连接段包边结构插槽腔，尾连接段包边结构插槽腔与绝缘套管单元的首连接段部分的内管腔形成首连接段内腔整体，绝缘套管单元的尾连接段部分的自由端可插入首连接段内腔整体的自由端形成密封连通的插接结构。这种插接结构使得绝缘套管可以根据实际需要无限延长，拆装方便，提高了整体线路绝缘套管的可维护性。在实际使用中，由于外部环境因素的影响，诸如大风、强降水等，架空电缆处于摇摆不定的工作状态，基于上述插接的套管结构容易在频繁的无序运动中产生松动甚至脱离，为了解决这个问题，本方案还公开了加强插接稳定性的方案，即绝缘套管单元整体包边甲的首连接段部分上设有锁紧通孔结构，锁紧通孔结构内设有锁紧螺丝，锁紧螺丝与锁紧通孔结构内部形成内外螺纹连接，锁紧螺丝通过锁紧通孔结构旋入或旋出尾连接段包边结构插槽腔，锁紧螺丝旋入尾连接段包边结构插槽腔抵紧插接在尾连接段包边结构插槽腔内的尾连接段部分形成锁紧结构，锁紧螺丝旋出尾连接段包边结构插槽腔脱离插接在尾连接段包边结构插槽腔内的尾连接段部分形成可拆卸的插接结构。锁紧通孔结构的引入加强了相邻套接的绝缘管的连接稳定性，同时便于拆卸，而且本方案的锁紧部件并不限于螺丝与螺纹的配合方式，还可以采用销钉拴紧的方式。In order to meet the requirements of full insulation coverage of 35kV transmission overhead lines, the insulating sleeve of this scheme adopts the scheme of standard tube socketing, that is, multiple standard insulating sleeves are socketed end-to-end to achieve full coverage of cables. In order to achieve the above-mentioned technical purpose, the insulating sleeve of this scheme is designed to be end-to-end nested, that is, the inner diameter of the first connecting section is larger than the inner diameter of the tail connecting section, and the insulating sleeve unit is integrally wrapped with the first connecting section of B and the insulating sleeve The inner surface of the first connecting section of the pipe unit as a whole is provided with a slot cavity of a tail connecting section wrapping structure, and the slot cavity of the tail connecting section is wrapped with the inner tube cavity of the first connecting section of the insulating sleeve unit. The inner cavity of the first connecting section is formed as a whole, and the free end of the tail connecting section of the insulating sleeve unit can be inserted into the free end of the inner cavity of the first connecting section to form a sealed and connected plug-in structure. This plug-in structure enables the insulating sleeve to be infinitely extended according to actual needs, and is convenient for disassembly and assembly, which improves the maintainability of the overall line insulating sleeve. In actual use, due to the influence of external environmental factors, such as strong winds, heavy precipitation, etc., the overhead cables are in a swaying working state, and the sleeve structure based on the above-mentioned plugging is easy to loosen or even detach during frequent disorderly movements. To solve this problem, this solution also discloses a solution to enhance the stability of plugging, that is, a locking through hole structure is provided on the first connecting section of the integral side armor of the insulating sleeve unit, and a locking through hole structure is provided in the locking through hole structure. Screw, the locking screw and the locking through-hole structure form an internal and external thread connection, the locking screw is screwed into or out of the slot cavity of the tail connection section through the locking through-hole structure, and the locking screw is screwed into the tail connection section bag The side structure slot cavity is tightly inserted into the tail connection section in the side structure slot cavity to form a locking structure, and the locking screw is unscrewed out of the tail connection section. A detachable plug-in structure is formed by the tail connecting segment part in the socket cavity of the segment wrapping structure. The introduction of the locking through-hole structure strengthens the connection stability of the adjacent socketed insulating tubes, and at the same time facilitates disassembly, and the locking parts of this solution are not limited to the matching method of screws and threads, and can also be fastened by pins .
现有的10kV架空线路绝缘套管以及其改型的应用在35kV输电架空线路上的同类型产品的套管内壁与裸导线是直接接触的，在外部作用力的扰动下，电缆产生不规则的摆动，导致绝缘套管内壁与裸导线表面产生频繁的摩擦，从而产生从绝缘套管内部开始的磨损甚至开裂，最终导致绝缘失效。为了解决这个问题，本方案在绝缘管内部设置了环状加强筋，如图2和2-2所示，即绝缘套管单元的套管段内壁上沿轴向设有若干加强筋环，加强筋环的内径大于裸导线的外径。这种采用若干加强筋套住裸导线的方案不仅加强了绝缘管本身的机械性能，而且将裸导线与绝缘套管内壁隔离，使得绝缘管内壁与裸导线间产生间隙，不仅防止了两者间的摩擦，而且还有利于间隙内的空气对流散热。为了满足电缆绝缘的要求，同时兼顾架设结构的承受能力，本方案的绝缘套管对组成的材质和产品的尺寸进行了优化，即35kV输电架空线路迷宫式绝缘套管的材质是厚度大于或等于2.5mm的硅橡胶材料。硅橡胶的介电强度很高，1mm厚的硅橡胶就能承受20kV的耐压试验，实验证明只要把硅橡胶绝缘罩的厚度设计成2.5mm以上就能满足实际使用的需要，而这个厚度相当于10kV用绝缘罩厚度。The existing insulating bushing for 10kV overhead lines and its modification applied to 35kV overhead lines have the inner wall of the bushing in direct contact with the bare wire, and the cable will produce irregular wires under the disturbance of external force Swinging will cause frequent friction between the inner wall of the insulating sleeve and the surface of the bare wire, resulting in wear and even cracking from the inside of the insulating sleeve, eventually leading to insulation failure. In order to solve this problem, this scheme sets a ring-shaped reinforcing rib inside the insulating tube, as shown in Figure 2 and 2-2, that is, the inner wall of the casing section of the insulating sleeve unit is provided with several reinforcing rib rings in the axial direction, and the reinforcing rib The inner diameter of the ring is larger than the outer diameter of the bare wire. This scheme of using several reinforcing ribs to cover the bare wire not only strengthens the mechanical properties of the insulating tube itself, but also isolates the bare wire from the inner wall of the insulating sleeve, creating a gap between the inner wall of the insulating tube and the bare wire, which not only prevents the gap between the two. friction, but also conducive to air convection heat dissipation in the gap. In order to meet the requirements of cable insulation and take into account the bearing capacity of the erection structure, the insulating sleeve of this scheme optimizes the material and product size, that is, the material of the labyrinth insulating sleeve for 35kV transmission overhead lines is thicker than or equal to 2.5mm silicone rubber material. The dielectric strength of silicone rubber is very high. Silicon rubber with a thickness of 1mm can withstand a 20kV withstand voltage test. The experiment proves that as long as the thickness of the silicone rubber insulating cover is designed to be more than 2.5mm, it can meet the needs of actual use, and this thickness is quite The thickness of the insulating cover is used at 10kV.
高压避雷器通常采用金属氧化锌避雷器(MOA)，是一种过电压保护装置，它由封装在瓷套内的若干非线性电阻阀片串联组成，其阀片以氧化锌为主要原料，并配以其它金属氧化物。目前，在35kV电力系统中，绝大部分挂网使用的金属氧化物避雷器(以下简称避雷器)，有的是以绝缘底座作为基座的立柱式避雷器，有的是以接地端作为机械悬挂连接的悬挂式避雷器。立柱式避雷器，一般安装于架空线下面，需要有一个至少由双横担构成的安装使用平台，其结构虽然简单，但必须构建一个水平面安置立柱式避雷器，占用空间较大，更容易引起高空勾物，给线路外破等提供了滋生的平台，由于更接近地面，或产生隐患。悬挂式避雷器，悬挂于架空线上端，所占的高空位置虽然避免了动物等的接触，但也使得人工维护避雷器等工作变得更加麻烦。为了解决上述问题，本方案采用了上述横置的可旋转并加装跨伞绝缘罩的避雷器，如图3所示，具体包括横担安装支架、避雷器安装底架、避雷器本体和避雷器跨伞绝缘罩，横担安装支架安装在电杆横担上，避雷器安装底架与横担安装支架形成可紧固铰接，避雷器本体包括避雷器接地端和避雷器高压端，避雷器接地端与避雷器安装底架固定连接，避雷器本体通过避雷器安装底架与横担安装支架形成避雷器本体从横置状态到垂置状态的旋转可紧固铰接，避雷器接地端设有避雷器接地电极，避雷器接地电极通过脱离器与横担底座接地端电连接，该线路上还可以串联避雷器动作监测装置，来掌握避雷器的工作状态，避雷器高压端设有避雷器高压接线柱，避雷器高压端的外部包覆设有避雷器跨伞绝缘罩，架空线引下线穿过避雷器跨伞绝缘罩与避雷器高压接线柱形成电连接。上述横置的避雷器简化了立柱式避雷器的横担平台结构，同时可以利用可旋转的结构在维护时将横置的避雷器调整至垂直的位置，便于操作，而且避雷器高压端采用了跨伞绝缘罩，提高了避雷器的安全性能。High-voltage surge arresters usually use metal zinc oxide surge arresters (MOA), which are overvoltage protection devices. other metal oxides. At present, in the 35kV power system, most of the metal oxide arresters (hereinafter referred to as arresters) used for hanging the grid, some are column arresters with insulating base as the base, and some are suspension arresters with the grounding terminal as the mechanical suspension connection. The column arrester is generally installed under the overhead line. It needs an installation and use platform composed of at least double cross arms. Objects provide a breeding platform for line breakouts, which may cause hidden dangers because they are closer to the ground. The suspended lightning arrester is suspended on the top of the overhead line. Although the high-altitude position occupied avoids contact with animals, it also makes manual maintenance of the lightning arrester more troublesome. In order to solve the above problems, this solution adopts the above-mentioned lightning arrester that can be rotated horizontally and equipped with a cross-umbrella insulation cover, as shown in Figure 3, which specifically includes the cross-arm mounting bracket, the arrester mounting frame, the arrester body and the arrester cross-umbrella insulation. The cover, the cross-arm mounting bracket is installed on the pole cross-arm, the arrester mounting base and the cross-arm mounting bracket form a fastening hinge, the arrester body includes the arrester grounding terminal and the arrester high-voltage end, and the arrester grounding end is fixedly connected to the arrester mounting base , the arrester body forms a fastening hinge for the rotation of the arrester body from the horizontal state to the vertical state through the arrester mounting base frame and the cross-arm mounting bracket. The arrester grounding end is provided with the arrester grounding electrode, and the arrester grounding electrode passes through the disconnector and the cross-arm base. The ground terminal is electrically connected, and the lightning arrester action monitoring device can also be connected in series on this line to grasp the working status of the lightning arrester. The downline passes through the lightning arrester across the umbrella insulating cover to form an electrical connection with the lightning arrester high-voltage terminal. The above-mentioned horizontal arrester simplifies the cross-arm platform structure of the column type arrester, and at the same time, the rotatable structure can be used to adjust the horizontal arrester to the vertical position during maintenance, which is convenient for operation, and the high-voltage end of the arrester adopts a cross-umbrella insulating cover , improve the safety performance of the arrester.
本方案的避雷器在工作时采用横置的方式，避雷器的高压接线柱直接与下行的架空线引下线连接，为了提高安全性，增加绝缘覆盖面积，在连接的部位增设了跨伞绝缘罩，跨伞绝缘罩将引下线与高压接线柱导通的部位包覆绝缘，如图3所示，具体是避雷器绝缘罩包括跨伞端绝缘罩和引下线端绝缘罩，跨伞端绝缘罩与引下线端绝缘罩无缝拼合形成三通套管结构，三相电缆下引线穿过引下线端绝缘罩与避雷器高压端的高压接线柱相交电连接，三通套管结构包括沿中截面对称扣合的半三通壳体结构甲和半三通壳体结构乙，半三通壳体结构甲边缘设有连接檐边甲，连接檐边甲上设有若干连接通孔，半三通壳体结构乙边缘设有连接檐边乙，连接檐边乙上设有若干连接通孔，上述对称扣合的半三通壳体结构甲和半三通壳体结构乙通过对应的连接通孔固定连接形成三通套管结构。上述由两部分扣合组成的绝缘罩拆装方便，不易脱落。The lightning arrester of this scheme adopts the horizontal way when working, and the high-voltage terminal of the lightning arrester is directly connected with the down-leading overhead line. In order to improve the safety and increase the insulation coverage area, a cross-umbrella insulation cover is added at the connection part The cross-umbrella insulation cover covers and insulates the conductive part of the down-conductor and the high-voltage terminal, as shown in Figure 3. Specifically, the lightning arrester insulation cover includes the cross-umbrella end insulation cover and the down-conductor end insulation cover, and the cross-umbrella end insulation cover It is seamlessly combined with the insulating cover of the down-conductor end to form a three-way bushing structure. The lower lead of the three-phase cable passes through the insulating cover of the down-lead end and is electrically connected to the high-voltage terminal of the high-voltage end of the arrester. The three-way bushing structure includes The semi-tee shell structure A and the half-tee shell structure B are symmetrically fastened. The edge of the half-tee shell structure A is provided with connecting eaves. The edge of the shell structure B is provided with a connecting eaves B, and a number of connecting through holes are provided on the connecting eaves B. The above-mentioned symmetrical half-tee shell structure A and half-tee shell structure B pass through the corresponding connecting through holes The fixed connection forms a three-way casing structure. The above-mentioned insulating cover composed of two fastened parts is easy to disassemble and is not easy to fall off.
本方案的避雷器在应用到35kV及以上的架空线路上时将会与高压线缆直接连接，由于35kV架空线路发生沿面闪络的可能性比较大，为了避免发生安全事故，配合35kV架空线路输电的要求和特点，避免发生沿面闪络，本方案的绝缘罩在引下线穿过的一侧壳体上进行了改进，如图3-1所示，具体是引下线端绝缘罩的外端部分的连接檐边乙沿连接檐边甲的边缘折叠包覆在连接檐边甲外表面上形成“回”形包边结构。引下线端绝缘罩外端部分的连接檐边乙与连接檐边甲外表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构C，连接檐边甲外表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构C，压钉条结构C与沉坑槽结构C压合形成防松条扣结构C。引下线端绝缘罩外端部分的连接檐边乙与连接檐边甲内表面结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构D，连接檐边甲内表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构D，压钉条结构D与沉坑槽结构D压合形成防松条扣结构D。如图3-2所示，上述“回”形包边结构具体是一侧包边(较长边)翻折将另一侧包边(较短边)夹包在其中从而形成回转的结合面，这种包边结构并不限于图中示出的一层夹包，还可以是在一层夹包的基础上再次折叠形成多层夹包的结构，即将上述“回”形绝缘包边结构再次折叠形成多层迷宫式包边结构。上述“回”形包边结构增加了绝缘套管内表面长度，从而延长了沿面闪络长度，有效改善了绝缘套管的安全性能。同样，上述“回”形绝缘包边结构可以采用绝缘胶粘合形成一次性的封闭结构，但是这种结构可维护性较差，无法拆卸维护，为了解决这个问题，本方案公开了上述防松条扣结构来实现包边的牢固结合，这种连续性的压合结构使得绝缘罩的封装操作近似拉链过程，既具有操作方便性，又提高了封装的密封性，同时封装结构稳定不易开缝脱落，从而改善了“回”形迷宫式绝缘包边结构的可维护性，使得安装和拆卸都比较方便，而且没有改变绝缘罩本体结构。When the arrester of this scheme is applied to overhead lines of 35kV and above, it will be directly connected with high-voltage cables. Since the possibility of flashover along the surface of 35kV overhead lines is relatively high, in order to avoid safety accidents, it is necessary to cooperate with 35kV overhead lines for power transmission. Requirements and characteristics, to avoid flashover along the surface, the insulating cover of this scheme is improved on the side shell where the down-conductor passes through, as shown in Figure 3-1, specifically the outer end of the insulating cover at the end of the down-conductor Part of the connecting eaves edge B is folded along the edge of the connecting eaves edge A and covered on the outer surface of the connecting eaves edge A to form a "back"-shaped wrapping structure. The connecting eaves B and the outer surface of the connecting eaves A of the outer end of the insulation cover of the down-lead end are combined with a nail strip structure C extending in the axial direction with a horseshoe-shaped cross-section, connecting the outer surface of the eaves A The surface is provided with an axially extending sunken groove structure C with a horseshoe-shaped cross-section, and the nail strip structure C is pressed together with the sunken groove structure C to form an anti-loosening buckle structure C. On the surface where the connecting eaves B and the inner surface of the connecting eaves A are combined on the outer end of the insulation cover of the down-lead end, there is a riding-shoe-shaped nailing strip structure D extending in the axial direction, and on the inner surface of the connecting eaves A There is a sunken groove structure D with a horseshoe-shaped section extending in the axial direction, and the nail strip structure D and the sunken groove structure D are pressed together to form the anti-loosening buckle structure D. As shown in Figure 3-2, the above-mentioned "back"-shaped hemming structure is specifically that one side of the hemming (longer side) is folded and the other side of the hemming (shorter side) is sandwiched in it to form a turning joint surface , this kind of wrapping structure is not limited to the one-layer wrapping shown in the figure, it can also be folded again on the basis of a layer of wrapping to form a multi-layer wrapping structure, that is, the above-mentioned "back" shaped insulating wrapping structure Fold again to form a multi-layer labyrinth binding structure. The above-mentioned "back"-shaped wrapping structure increases the length of the inner surface of the insulating sleeve, thereby prolonging the flashover length along the surface, and effectively improving the safety performance of the insulating sleeve. Similarly, the above-mentioned "back" shaped insulating hemming structure can be bonded with insulating glue to form a one-time closed structure, but this structure has poor maintainability and cannot be disassembled for maintenance. In order to solve this problem, this solution discloses the above-mentioned anti-loosening The strip buckle structure is used to realize the firm combination of the wrapping. This continuous pressing structure makes the sealing operation of the insulating cover similar to the zipper process, which not only has the convenience of operation, but also improves the sealing of the package. At the same time, the package structure is stable and not easy to open. Falling off, thereby improving the maintainability of the "back" labyrinth insulation wrapping structure, making installation and disassembly more convenient, and the structure of the insulation cover body is not changed.
为了满足避雷器安装、拆卸维护方便的要求，本方案采用了避雷器工作状态下呈横置状态，而维护拆卸时呈垂置状态的设计方案，因此避雷器在大多数情况下是呈横置状态设置的，为了进一步保证避雷器在工作状态下的稳定性，避免其在自身重力作用下产生松滑从而逐渐下转偏离，本方案在避雷器安装底架与横担安装支架形成可紧固铰接处增设了锁紧部件，如图3所示，即可紧固铰接是通过锁止螺栓与内螺纹通孔配合的内外螺纹连接形成的可固定旋转角度的铰接，在避雷器横置的状态下，只需拧紧锁止螺栓即可起到固定横置状态的要求。然而在电网实际运行过程中要面对各种复杂的外部因素，如大风、强降水等，线缆在外部因素的作用下经常不规则摇摆振动，因此带动避雷器发生松动的可能性增加，为了避免上述问题，本方案在上述紧固方案的基础上还增设了其它锁止部件，如图3所示，即避雷器安装底架上设有旋转锁止通孔I，横担安装支架上设有旋转锁止通孔II，避雷器本体在横置状态下通过设在旋转锁止通孔I和旋转锁止通孔II内的锁止销锁定避雷器本体的位置。锁止螺栓和锁止销的结合使用彻底避免了避雷器在横置状态下的松动，起到了良好的紧固作用。基于以上结构，避雷器的旋转拆卸机制是由横担安装支架、锁止螺栓、锁止销和避雷器安装底架四部分构成的，其中锁止销作为避雷器旋转至水平横装时的锁止紧固点，而锁止螺栓在平时避雷器水平安装运行时主要起固定紧固点作用，在需要拆卸更换避雷器时，拆卸避雷器跨伞绝缘罩，解开避雷器高压接线柱连接的高压引下线，旋松作为旋转支撑的锁止螺栓，并拆卸锁止销，避雷器从水平横装旋转到垂直向下，进行避雷器的更换工作。In order to meet the requirements of convenient installation, disassembly and maintenance of the arrester, this scheme adopts the design scheme that the arrester is in a horizontal state when it is working, and it is in a vertical state when it is maintained and disassembled. Therefore, the arrester is set in a horizontal state in most cases. In order to further ensure the stability of the arrester in the working state and prevent it from being loose and slippery under the action of its own gravity and thus gradually turning downwards and deviated, a lock is added at the fastening joint formed by the arrester installation chassis and the cross-arm installation bracket. As shown in Figure 3, the fastening hinge is a hinge that can fix the rotation angle formed by the internal and external thread connection of the locking bolt and the internal thread through hole. Only the stop bolt can meet the requirements of fixing the horizontal state. However, in the actual operation of the power grid, various complex external factors must be faced, such as strong winds, heavy precipitation, etc. Under the action of external factors, the cables often swing and vibrate irregularly, so the possibility of driving the arrester to loosen increases. In order to avoid For the above problems, this solution adds other locking components on the basis of the above fastening solution, as shown in Figure 3, that is, the arrester mounting base is provided with a rotation locking through hole I, and the cross-arm mounting bracket is provided with a rotation lock. In the locking through hole II, the arrester body locks the position of the arrester body through the locking pins arranged in the rotation locking through hole I and the rotation locking through hole II in the horizontal state. The combined use of the locking bolt and the locking pin completely avoids the loosening of the arrester in the horizontal state, and plays a good fastening effect. Based on the above structure, the rotating and dismounting mechanism of the arrester is composed of four parts: the cross-arm mounting bracket, the locking bolt, the locking pin and the arrester installation chassis, among which the locking pin is used as the locking and fastening when the arrester is rotated to horizontal installation point, and the locking bolt mainly serves as a fixed fastening point when the arrester is installed and operated horizontally at ordinary times. As the locking bolt of the rotating support, and the locking pin is disassembled, the lightning arrester is rotated from the horizontal horizontal installation to the vertical downward, and the replacement of the lightning arrester is carried out.
耐张线夹是用于固定导线，以承受导线张力，并将导线挂至耐张串组或杆塔上的金具，多用于转角、接续，及终端的连接。当电压等级较高时，对耐张线夹的绝缘性能要求也较高。为了满足高压线路对耐张线夹的绝缘性能要求，预防沿面闪络，本方案在耐张线夹上增设了绝缘罩。如图4所示，具体是耐张线夹绝缘罩是包设在耐张线夹上的侧面沿轴向开口的弯头套管结构，耐张线夹绝缘罩的侧面开口的一端设有耐张线夹绝缘罩包边甲，耐张线夹绝缘罩的侧面开口的另一端设有耐张线夹绝缘罩包边乙，耐张线夹绝缘罩包边乙沿耐张线夹绝缘罩包边甲的边缘折叠包覆在耐张线夹绝缘罩包边甲的外表面上形成“回”形迷宫式包边结构。耐张线夹绝缘罩包边乙与耐张线夹绝缘罩包边甲外表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构E，耐张线夹绝缘罩包边甲外表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构E，压钉条结构E与沉坑槽结构E压合形成防松条扣结构E。耐张线夹绝缘罩包边乙与耐张线夹绝缘罩包边甲内表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构F，耐张线夹绝缘罩包边甲内表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构F，压钉条结构F与沉坑槽结构F压合形成防松条扣结构F。上述全覆盖式绝缘方案有效提高了耐张线夹的整体绝缘性能，同时防止了鸟类和蛇类袭扰造成的外部损坏。同样，上述“回”形迷宫式包边结构具体是一侧包边(较长边)翻折将另一侧包边(较短边)夹包在其中从而形成回转的结合面，这种包边结构并不限于图中示出的一层夹包，还可以是在一层夹包的基础上再次折叠形成多层夹包的结构，即将上述“回”形绝缘包边结构再次折叠形成多层迷宫式包边结构。上述“回”形包边结构增加了绝缘罩内表面长度，从而延长了沿面闪络长度，有效改善了绝缘罩应用在35kV及以上高压架空线路上的安全性能。同样，上述“回”形绝缘包边结构可以采用绝缘胶粘合形成一次性的封闭结构，但是这种结构可维护性较差，无法拆卸维护，为了解决这个问题，本方案公开了上述防松条扣结构来实现包边的牢固结合，这种连续性的压合结构使得绝缘罩的封装操作近似拉链过程，既具有操作方便性，又提高了封装的密封性，同时封装结构稳定不易开缝脱落，从而改善了“回”形迷宫式绝缘包边结构的可维护性，使得安装和拆卸都比较方便，而且没有改变绝缘罩本体结构。The strain clamp is used to fix the wires to bear the tension of the wires and hang the wires to the tension strings or towers. It is mostly used for corners, connections, and terminal connections. When the voltage level is higher, the insulation performance requirements for the strain clamp are also higher. In order to meet the insulation performance requirements of the high-voltage line for the strain clamp and prevent flashover along the surface, an insulating cover is added to the strain clamp in this scheme. As shown in Figure 4, specifically, the insulation cover of the tension clamp is an elbow sleeve structure wrapped on the tension clamp with the side opening along the axial direction, and one end of the side opening of the insulation cover of the tension clamp is provided with a tension Edge A of the wire clamp insulating cover, the other end of the side opening of the insulating cover of the strain-resistant wire clamp is provided with edge B of the insulating cover of the strain-resistant wire clamp, edge B of the insulating cover of the strain-resistant wire clamp is wrapped along the edge of the insulating cover of the strain-resistant wire clamp The edge of the armor is folded and covered on the outer surface of the envelope armor of the insulation cover of the tension clamp to form a "back" shape labyrinth envelope structure. On the surface combined with the outer covering of the strain-resistant clamp insulating cover edge B and the outer surface of the strain-resistant clamp insulating cover wrapping A, there is a riding-shoe-shaped crimping strip structure E extending along the axial direction, and the strain-resistant clamp insulation The outer surface of the cover-wrapped armor is provided with an axially extending sunken groove structure E with a horseshoe-shaped cross-section. On the surface covered and combined with the inner surface of the tension clamp insulating cover wrapping B and the tension clamp insulating cover wrapping A, there is a horseshoe-shaped pressing nail strip structure F extending along the axial direction, and the tension clamp insulation The inner surface of the cover-wrapping armor is provided with a cross-section of a horseshoe-shaped sinking groove structure F extending in the axial direction, and the nail strip structure F and the sinking groove structure F are pressed together to form an anti-loosening buckle structure F. The above-mentioned full-cover insulation scheme effectively improves the overall insulation performance of the strain clamp, and at the same time prevents external damage caused by birds and snakes. Similarly, the above-mentioned "back" shaped labyrinth wrapping structure is specifically that one side wrapping (longer side) is folded and the other side wrapping (shorter side) is sandwiched therein to form a turning joint surface. The edge structure is not limited to the one-layer sandwich shown in the figure, and can also be folded again on the basis of a layer of sandwich to form a multi-layer sandwich structure, that is, the above-mentioned "back" shaped insulation wrapping structure is folded again to form a multi-layer sandwich structure. Layer labyrinth wrapping structure. The above-mentioned "back"-shaped wrapping structure increases the length of the inner surface of the insulating cover, thereby prolonging the flashover length along the surface, and effectively improving the safety performance of the insulating cover applied to high-voltage overhead lines of 35kV and above. Similarly, the above-mentioned "back"-shaped insulating wrapping structure can be bonded with insulating glue to form a one-time closed structure, but this structure has poor maintainability and cannot be disassembled for maintenance. In order to solve this problem, this solution discloses the above-mentioned anti-loosening The strip buckle structure is used to realize the firm combination of the wrapping. This continuous pressing structure makes the sealing operation of the insulating cover similar to the zipper process, which not only has the convenience of operation, but also improves the sealing of the package. At the same time, the package structure is stable and difficult to open. Falling off, thereby improving the maintainability of the "back" labyrinth insulation wrapping structure, making installation and disassembly more convenient, and the structure of the insulation cover body is not changed.
本方案的电缆接头与三相电缆下引线形成直接的电连接，因此在高压线路的接线处也应该设置绝缘罩，预防沿面闪络，如图5所示，具体是电缆接头绝缘罩包括电缆下引线绝缘罩和跨伞段绝缘罩，电缆下引线绝缘罩包覆在电缆下引线和电缆接头端上，跨伞段绝缘罩包覆在电缆接头伞裙部上，电缆下引线绝缘罩和跨伞段绝缘罩无缝拼合形成电缆接头绝缘罩整体。电缆接头绝缘罩整体是侧面沿轴向开口的套管结构，电缆接头绝缘罩整体的侧面开口的一端设有电缆接头绝缘罩整体包边甲，电缆接头绝缘罩整体的侧面开口的另一端设有电缆接头绝缘罩整体包边乙，电缆接头绝缘罩整体包边乙沿电缆接头绝缘罩整体包边甲的边缘折叠包覆在电缆接头绝缘罩整体包边甲的外表面上形成“回”形迷宫式包边结构。电缆接头绝缘罩整体包边乙与电缆接头绝缘罩整体包边甲外表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构G，电缆接头绝缘罩整体包边甲外表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构G，压钉条结构G与沉坑槽结构G压合形成防松条扣结构G。电缆接头绝缘罩整体包边乙与电缆接头绝缘罩整体包边甲内表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构H，电缆接头绝缘罩整体包边甲内表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构H，压钉条结构H与沉坑槽结构H压合形成防松条扣结构H。同样，上述“回”形迷宫式包边结构具体是一侧包边(较长边)翻折将另一侧包边(较短边)夹包在其中从而形成回转的结合面，这种包边结构并不限于图中示出的一层夹包，还可以是在一层夹包的基础上再次折叠形成多层夹包的结构，即将上述“回”形绝缘包边结构再次折叠形成多层迷宫式包边结构。上述“回”形包边结构增加了绝缘罩内表面长度，从而延长了沿面闪络长度，有效改善了绝缘罩应用在35kV及以上高压架空线路上的安全性能。同样，上述“回”形绝缘包边结构可以采用绝缘胶粘合形成一次性的封闭结构，但是这种结构可维护性较差，无法拆卸维护，为了解决这个问题，本方案公开了上述防松条扣结构来实现包边的牢固结合，这种连续性的压合结构使得绝缘罩的封装操作近似拉链过程，既具有操作方便性，又提高了封装的密封性，同时封装结构稳定不易开缝脱落，从而改善了“回”形迷宫式绝缘包边结构的可维护性，使得安装和拆卸都比较方便，而且没有改变绝缘罩本体结构。包覆在电缆接头伞裙部上的跨伞段绝缘罩形成的伞状结构绝缘面增加了沿面闪络的距离，应用在35kV及以上高压线路上具有更好的绝缘安全性能。The cable connector of this solution forms a direct electrical connection with the lower lead of the three-phase cable. Therefore, an insulating cover should also be installed at the connection of the high-voltage line to prevent flashover along the surface, as shown in Figure 5. Specifically, the insulating cover of the cable connector includes the lower lead of the cable. The insulation cover of the lead wire and the insulation cover of the umbrella section, the insulation cover of the lower lead of the cable is covered on the lower lead of the cable and the end of the cable joint, the insulation cover of the section of the umbrella is wrapped on the skirt of the cable joint, the insulation cover of the lower lead of the cable and the insulation cover of the umbrella The segmental insulating covers are seamlessly assembled to form a whole cable joint insulating cover. The overall cable joint insulation cover is a casing structure with side openings along the axial direction. One end of the overall side opening of the cable joint insulation cover is provided with an integral edge armor, and the other end of the overall side opening of the cable joint insulation cover is provided with The overall edge wrapping of the cable joint insulation cover B, the overall edge wrapping B of the cable joint insulation cover is folded along the edge A of the overall edge wrapping of the cable joint insulation cover and covered on the outer surface of the overall edge A of the cable joint insulation cover to form a "back" shaped labyrinth type wrapping structure. The integral edge wrapping of the cable joint insulating cover B and the outer covering of the cable joint insulating cover integral wrapping A are provided with a horseshoe-shaped crimping strip structure G extending in the axial direction, and the cable joint insulating cover is integrally edged The outer surface of the armor is provided with a sinking groove structure G extending in the axial direction and having a horseshoe-shaped cross-section. The overall wrapping of the cable joint insulating cover B and the inner surface of the cable joint insulating cover integral wrapping A are coated with a nail strip structure H extending in the axial direction with a horseshoe-shaped cross section, and the cable joint insulating cover is integrally wrapped The inner surface of the nail is provided with a sinking groove structure H extending in the axial direction and having a horseshoe-shaped cross-section. Similarly, the above-mentioned "back" shaped labyrinth wrapping structure is specifically that one side wrapping (longer side) is folded and the other side wrapping (shorter side) is sandwiched therein to form a turning joint surface. The edge structure is not limited to the one-layer sandwich shown in the figure, and can also be folded again on the basis of a layer of sandwich to form a multi-layer sandwich structure, that is, the above-mentioned "back" shaped insulation wrapping structure is folded again to form a multi-layer sandwich structure. Layer labyrinth wrapping structure. The above-mentioned "back"-shaped wrapping structure increases the length of the inner surface of the insulating cover, thereby prolonging the flashover length along the surface, and effectively improving the safety performance of the insulating cover applied to high-voltage overhead lines of 35kV and above. Similarly, the above-mentioned "back"-shaped insulating wrapping structure can be bonded with insulating glue to form a one-time closed structure, but this structure has poor maintainability and cannot be disassembled for maintenance. In order to solve this problem, this solution discloses the above-mentioned anti-loosening The strip buckle structure is used to realize the firm combination of the wrapping. This continuous pressing structure makes the sealing operation of the insulating cover similar to the zipper process, which not only has the convenience of operation, but also improves the sealing of the package. At the same time, the package structure is stable and not easy to open. Falling off, thereby improving the maintainability of the "back" labyrinth insulation wrapping structure, making installation and disassembly more convenient, and the structure of the insulation cover body is not changed. The umbrella-shaped insulating surface formed by the insulating cover covering the umbrella skirt of the cable joint increases the flashover distance along the surface, and has better insulation safety performance when applied to 35kV and above high-voltage lines.
本方案的接地挂环是方便检修工序中挂接地挂钩使用的部件，本方案为了满足35kV及以上高压线路的绝缘要求，预防沿面闪络，在接地挂环外部也增设了绝缘罩，如图6所示，具体是接地挂环绝缘罩包括电缆下引线绝缘罩和挂环绝缘罩，电缆下引线绝缘罩包覆在电缆下引线和挂环部件的连接端上，挂环绝缘罩包覆在挂环部件上，电缆下引线绝缘罩和挂环绝缘罩无缝拼合形成接地挂环绝缘罩整体。电缆下引线绝缘罩是侧面沿轴向开口的套管结构，电缆下引线绝缘罩的侧面开口的一端设有电缆下引线绝缘罩包边甲，电缆下引线绝缘罩的侧面开口的另一端设有电缆下引线绝缘罩包边乙，电缆下引线绝缘罩包边乙沿电缆下引线绝缘罩包边甲的边缘折叠包覆在电缆下引线绝缘罩包边甲的外表面上形成“回”形迷宫式包边结构。电缆下引线绝缘罩包边乙与电缆下引线绝缘罩包边甲外表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构I，电缆下引线绝缘罩包边甲外表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构I，压钉条结构I与沉坑槽结构I压合形成防松条扣结构I。电缆下引线绝缘罩包边乙与电缆下引线绝缘罩包边甲内表面包覆结合的表面上设有沿轴向延伸的截面呈马靴形的压钉条结构J，电缆下引线绝缘罩包边甲内表面上设有沿轴向延伸的截面呈马靴形的沉坑槽结构J，压钉条结构J与沉坑槽结构J压合形成防松条扣结构J。上述全覆盖式绝缘方案有效提高了接地挂环的整体绝缘性能，同时防止了鸟类和蛇类袭扰造成的外部损坏。同样，上述“回”形迷宫式包边结构具体是一侧包边(较长边)翻折将另一侧包边(较短边)夹包在其中从而形成回转的结合面，这种包边结构并不限于图中示出的一层夹包，还可以是在一层夹包的基础上再次折叠形成多层夹包的结构，即将上述“回”形绝缘包边结构再次折叠形成多层迷宫式包边结构。上述“回”形包边结构增加了绝缘罩内表面长度，从而延长了沿面闪络长度，有效改善了绝缘罩应用在35kV及以上高压架空线路上的安全性能。同样，上述“回”形绝缘包边结构可以采用绝缘胶粘合形成一次性的封闭结构，但是这种结构可维护性较差，无法拆卸维护，为了解决这个问题，本方案公开了上述防松条扣结构来实现包边的牢固结合，这种连续性的压合结构使得绝缘罩的封装操作近似拉链过程，既具有操作方便性，又提高了封装的密封性，同时封装结构稳定不易开缝脱落，从而改善了“回”形迷宫式绝缘包边结构的可维护性，使得安装和拆卸都比较方便，而且没有改变绝缘罩本体结构。The grounding link of this scheme is a component that is convenient for hanging the grounding hook in the maintenance process. In order to meet the insulation requirements of 35kV and above high-voltage lines and prevent flashover along the surface, an insulating cover is also added outside the grounding link, as shown in Figure 6 As shown, specifically, the insulating cover of the grounding ring includes the insulating cover of the lower lead of the cable and the insulating cover of the hanging ring. On the ring component, the insulation cover of the lower lead of the cable and the insulation cover of the hanging ring are seamlessly combined to form a whole of the insulating cover of the grounding hanging ring. The insulating cover of the lower lead of the cable is a casing structure with the side opening along the axial direction. One end of the side opening of the insulating cover of the lower lead of the cable is provided with a side armor of the insulating cover of the lower lead of the cable, and the other end of the insulating cover of the lower lead of the cable is provided with a The cable lower lead insulation cover edge B, the cable lower lead insulation cover edge B is folded along the edge of the cable lower lead insulation cover edge A and covered on the outer surface of the cable lower lead insulation cover edge A to form a "back" shaped labyrinth type wrapping structure. The cable lower lead insulation cover wrapping B and the cable lower lead insulation cover wrapping A outer covering surface are provided with a horseshoe-shaped crimping strip structure I extending in the axial direction, and the cable lower lead insulation cover wrapping The outer surface of the armor is provided with a sinking groove structure I extending in the axial direction and having a horseshoe-shaped cross-section. The cable lower lead insulation cover wrapping B and the inner surface of the cable lower lead insulation cover wrapping A are coated with a nail strip structure J with a horseshoe-shaped cross-section extending along the axial direction, and the cable lower lead insulation cover wrapping The inner surface of the nail is provided with a sinking groove structure J extending in the axial direction and having a horseshoe-shaped cross-section. The above-mentioned full-cover insulation scheme effectively improves the overall insulation performance of the grounding ring, and at the same time prevents external damage caused by birds and snakes. Similarly, the above-mentioned "back" shaped labyrinth wrapping structure is specifically that one side wrapping (longer side) is folded and the other side wrapping (shorter side) is sandwiched therein to form a turning joint surface. The edge structure is not limited to the one-layer sandwich shown in the figure, and can also be folded again on the basis of a layer of sandwich to form a multi-layer sandwich structure, that is, the above-mentioned "back" shaped insulation wrapping structure is folded again to form a multi-layer sandwich structure. Layer labyrinth wrapping structure. The above-mentioned "back"-shaped wrapping structure increases the length of the inner surface of the insulating cover, thereby prolonging the flashover length along the surface, and effectively improving the safety performance of the insulating cover applied to high-voltage overhead lines of 35kV and above. Similarly, the above-mentioned "back"-shaped insulating wrapping structure can be bonded with insulating glue to form a one-time closed structure, but this structure has poor maintainability and cannot be disassembled for maintenance. In order to solve this problem, this solution discloses the above-mentioned anti-loosening The strip buckle structure is used to realize the firm combination of the wrapping. This continuous pressing structure makes the sealing operation of the insulating cover similar to the zipper process, which not only has the convenience of operation, but also improves the sealing of the package. At the same time, the package structure is stable and difficult to open. Falling off, thereby improving the maintainability of the "back" labyrinth insulation wrapping structure, making installation and disassembly more convenient, and the structure of the insulation cover body is not changed.
本方案的新型全绝缘35kV电缆登杆装置采用在35kV及以上高压线路上包设绝缘罩的方式提高高压线路的绝缘安全性，预防沿面闪络，具体是采用“回”形迷宫式绝缘套管提高高压线缆的绝缘性能，采用横置的可旋转并加装跨伞绝缘罩的避雷器简化避雷器装置的结构，提高其可维护性和安全性，同时采用“回”形迷宫式避雷器绝缘罩提高避雷器的绝缘性能，采用“回”形迷宫式耐张线夹绝缘罩提高耐张线夹的绝缘性能，采用“回”形迷宫式电缆接头绝缘罩提高电缆接头的绝缘性能，采用“回”形迷宫式接地挂环绝缘罩提高接地挂环的绝缘性能，以及以上输电部件作为一个整体实现的装置整体高压防沿面闪络全绝缘的方案。基于以上特点，本方案的新型全绝缘35kV电缆登杆装置相比现有的方案具有实质性特点和进步。The new fully insulated 35kV cable pole climbing device of this scheme adopts the method of wrapping an insulating cover on the 35kV and above high-voltage lines to improve the insulation safety of the high-voltage lines and prevent flashover along the surface. For the insulation performance of high-voltage cables, the arrester is adopted to simplify the structure of the arrester device and improve its maintainability and safety. The insulation performance of the cable joint is improved by using the "back"-shaped labyrinth-type tension clamp insulation cover to improve the insulation performance of the tension clamp, and the "back"-shaped labyrinth cable joint insulation cover is used to improve the insulation performance of the cable joint. The "back"-shaped labyrinth is adopted The grounding ring insulation cover improves the insulation performance of the grounding ring, and the above power transmission components are integrated to realize the overall high-voltage anti-flashover full insulation scheme of the device. Based on the above characteristics, the new fully insulated 35kV cable pole climbing device of this scheme has substantial characteristics and progress compared with the existing scheme.
本方案的全绝缘35kV电缆登杆装置并不限于具体实施方式中公开的内容，实施例中出现的技术方案可以单独存在，也可以相互包含，本领域技术人员根据本方案结合公知常识作出的简单替换方案也属于本方案的范围。The fully insulated 35kV cable pole climbing device of this program is not limited to the content disclosed in the specific implementation. The technical solutions in the embodiments can exist independently or include each other. Those skilled in the art can make a simple solution based on this program and common knowledge. Alternatives are also within the scope of this proposal.
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| CN105846382A (en) * | 2016-05-31 | 2016-08-10 | 上海电瓷厂有限公司 | Full-insulated 35kV cable climbing pole device |
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| CN105846382A (en) * | 2016-05-31 | 2016-08-10 | 上海电瓷厂有限公司 | Full-insulated 35kV cable climbing pole device |
| CN105846382B (en) * | 2016-05-31 | 2017-12-26 | 上海电瓷厂有限公司 | All insulation 35kV cable rod rising devices |
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