CN204651113U - Lightning arrester - Google Patents

Lightning arrester Download PDF

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Publication number
CN204651113U
CN204651113U CN201520399646.1U CN201520399646U CN204651113U CN 204651113 U CN204651113 U CN 204651113U CN 201520399646 U CN201520399646 U CN 201520399646U CN 204651113 U CN204651113 U CN 204651113U
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CN
China
Prior art keywords
induction
lightning arrester
positioning
inductor
canned paragraph
Prior art date
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Active
Application number
CN201520399646.1U
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Chinese (zh)
Inventor
顾明宏
徐勇
胡俊
高晓宁
席晓波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yangzhou Xinshichuang Technology Co Ltd
State Grid Corp of China SGCC
Yangzhou Power Supply Co of Jiangsu Electric Power Co
Original Assignee
Yangzhou Xinshichuang Technology Co Ltd
State Grid Corp of China SGCC
Yangzhou Power Supply Co of Jiangsu Electric Power Co
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Publication date
Application filed by Yangzhou Xinshichuang Technology Co Ltd, State Grid Corp of China SGCC, Yangzhou Power Supply Co of Jiangsu Electric Power Co filed Critical Yangzhou Xinshichuang Technology Co Ltd
Priority to CN201520399646.1U priority Critical patent/CN204651113U/en
Application granted granted Critical
Publication of CN204651113U publication Critical patent/CN204651113U/en
Active legal-status Critical Current
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Abstract

Lightning arrester.Providing one, accurately to respond to lightning arrester breakdown, improves the lightning arrester of electric power safety and reliability.Comprise semi-conductive layer, insulating barrier, spool and disengaging actuating mechanism, described disengaging actuating mechanism comprises resistor disc, hot melt conductor, spring, disconnector and rear end cap, the bottom of described spool is located at by described resistor disc, described semi-conductive layer comprises the positioning section be connected, induction section and canned paragraph, the lateral surface of described induction section is inclined-plane, and described induction section is connected between described positioning section and canned paragraph, the diameter of described canned paragraph is less than the diameter of described positioning section, described rear end cap is located at described canned paragraph, also comprise induction installation, described induction installation comprises support and inductor, described is set up on described rear end cap, described inductor is located on described support, the induction contact of described inductor is depressed into the bottom of described positioning section.The utility model ensures the safety and reliability of electric power system.

Description

Lightning arrester
Technical field
The utility model relates to field of electrical equipment, particularly relates to a kind of lightning arrester.
Background technology
The ring main unit that the electric power system distribution of urban adopts is generally with the 10kV outdoor common box type ring main unit of SF6 on-load switch composition, for a deciliter load current, cut-offfing short circuit current and no-load transformer electric current, is the important switchgear that ring network power supply and terminal are powered.10kV outdoor box ring main unit, also known as ring network power supplying units (abbreviation ring main unit), each ring main unit is total to case by 3 to 6 way switch and forms, and the mode of connection is versatile and flexible, can meet the demand of different distribution network node.Switching device and hard bus are enclosed in same stainless steel metal shell, adopt SF6 as arc-extinguishing medium and dielectric, and switch adopts on-load switch or the circuit breaker of three-phase ganged, and its rated current is 630A, and short time withstand current can reach 20kA/3S.
Due to this special arrangement architecture, ring main unit is connected with cable and adopts shielded cable terminal plug to install with ring main unit coupling box the form be connected.Usually in the incoming line cabinet side of ring main unit, install one be assembled in shield type after the lightning arrester of plug-in cable terminating plug inside make it encroach on from overvoltage for the protection of the SF6 on-load switch of ring main unit and power cable.
The controller switching equipments such as lightning arrester can discharge thunder and lightning or switching overvoltage energy, protection ring main unit endanger from instantaneous overvoltage, can block again afterflow, the unlikely protective device causing system short-circuit, earth fault to occur.The lightning arrester installed in ring main unit is usually connected to live wire and protected equipment closely cooperates.When overvoltage value reaches the operation voltage of regulation, lightning arrester is action immediately, flows through electric charge, over-voltage amplitude, and proterctive equipment insulate; After magnitude of voltage is normal, lightning arrester restores to the original state rapidly again, to ensure system normal power supply.
Metal oxide arrester (MOA) is widely used in distribution net equipment because of its superior overvoltage protection characteristic; but the fault of MOA may cause it to explode; and involve the 10kV outdoor ring main unit coordinated with it, jeopardize and affect power distribution system secure operation.Therefore lightning arrester is provided with disconnector.Disconnector is as lightning arrester ancillary attachment, connect with lightning arrester and use, its objective is when abnormal breaking down appears in lightning arrester, utilize power frequency short circuit current by disconnector action, disconnector earth terminal is thrown off automatically, lightning arrester Accident prevention out of service expands further, and departs from mark to the lightning arrester that is out of order with observability, is convenient to attendant's Timeliness coverage fault point and carries out safeguarding and changing.And when lightning arrester is in normal operating conditions; disconnector is failure to actuate and is Low ESR (compared with lightning arrester); the not protective feature of the former operating state of influential system and lightning arrester, ensures uninterrupted power supply, makes lightning arrester really reach " non-maintaining " instructions for use.
Current distribution co-box type looped net cabinet only or cable branch box, cable vault adopts full-closed structure for preventing internal fault from injuring staff, in cable vault, the action situation of disconnector cannot intuitively be seen, therefore after disconnector comes off, be difficult to intuitively, timely find fault, affect Electrical Safety.And in prior art, though there is on-line monitoring technique, its cost of investment is high, the shortcomings such as maintenance cost is high.Owing to being high-tension electricity in distribution, monitor the operation conditions of lightning arrester according to display or annunciator (this is 220V voltage), how power taking is also technological difficulties.
Utility model content
The utility model is for above problem, and providing one, accurately to respond to lightning arrester breakdown, improves the lightning arrester of electric power safety and reliability.
The technical solution of the utility model is: comprise semi-conductive layer, insulating barrier, spool and disengaging actuating mechanism, described disengaging actuating mechanism is located on described spool, described insulating barrier wraps described spool and departs from actuating mechanism, described semi-conductive layer is located on the outer wall of described insulating barrier, described disengaging actuating mechanism comprises resistor disc, hot melt conductor, spring, disconnector and rear end cap, the bottom of described spool is located at by described resistor disc, described hot melt conductor is connected between described resistor disc and disconnector and described spring activity is located between described resistor disc and disconnector
Described semi-conductive layer comprises the positioning section, induction section and the canned paragraph that are connected, the lateral surface of described induction section is inclined-plane and described induction section is connected between described positioning section and canned paragraph, the diameter of described canned paragraph is less than the diameter of described positioning section, and described rear end cap is located at described canned paragraph;
Also comprise induction installation, described induction installation comprises support and inductor, and described is set up on described rear end cap, and described inductor is located on described support, and the induction contact of described inductor is depressed into the bottom of described positioning section.
Described support is provided with adjustment hole and some installing holes, and described adjustment hole comprises at least two and intersects the through hole arranged.
The gradient on the inclined-plane of described induction section is 1:2 ~ 1:16.
The utility model is provided with induction installation at the end that comes off of the afterbody of lightning arrester, after making lightning arrester breakdown, along with the Sports band departing from actuating mechanism moves the movement of sensor location, and then TouchSensor sends signal, make operating personnel the very first time can learn the operating mode that lightning arrester is breakdown, can repair in time or change lightning arrester, ensure the safety and reliability of electric power system.Meanwhile, because the lateral surface responding to section is inclined-plane, no matter make inductor when disengaging or displacement, all can touch inducing contact.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the structural representation of Fig. 1 medium-height trestle,
Fig. 3 be the utility model using state with reference to figure mono-,
Fig. 4 is that the utility model using state is with reference to figure bis-;
In figure, 1 is semi-conductive layer, and 11 is positioning sections, and 12 is induction sections, 13 is canned paragraphs, and 2 is insulating barriers, and 3 is spools, 4 is resistor discs, and 5 is hot melt conductors, and 6 is springs, 7 is disconnectors, and 8 is rear end caps, and 9 is induction installations, 91 is supports, and 911 is adjustment holes, and 9111 is through holes, 912 is installing holes, and 92 is inductors, and 921 is induction contact.
Embodiment
The utility model as Figure 1-4, comprise semi-conductive layer 1, insulating barrier 2, spool 3 and disengaging actuating mechanism, described disengaging actuating mechanism is located on described spool 3, described insulating barrier 2 wraps described spool 3 and departs from actuating mechanism, described semi-conductive layer 1 is located on the outer wall of described insulating barrier 2, described disengaging actuating mechanism comprises resistor disc 4, hot melt conductor 5, spring 6, disconnector 7 and rear end cap 8, the bottom of described spool 3 is located at by described resistor disc 4, described hot melt conductor 5 is connected between described resistor disc 4 and disconnector 7, and the activity of described spring 6 is located between described resistor disc 4 and disconnector 7,
Described semi-conductive layer 1 comprises the positioning section 11, induction section 12 and the canned paragraph 13 that are connected, the lateral surface of described induction section 12 is inclined-plane and described induction section 12 is connected between described positioning section 11 and canned paragraph 13, the diameter of described canned paragraph 13 is less than the diameter of described positioning section 11, described rear end cap 8 is located at described canned paragraph 13, for disconnector described in support 7;
Also comprise induction installation 9, described induction installation 9 comprises support 91 and inductor 92, and described support 91 is located on described rear end cap 8, and described inductor 92 is located on described support 91, and the induction contact 921 of described inductor 92 is depressed into the bottom of described positioning section 11.
Described support 91 is provided with adjustment hole 911 and some installing holes 912, described adjustment 911 hole comprises at least two and intersects the through hole 9111 arranged, for in limited installing space, regulate according to lightning arrester or inductor different model, after fixation, there is the phenomenons such as position slip in the adjustment hole also avoiding kidney-shaped shape.
The gradient on the inclined-plane of described induction section 12 is 1:2 ~ 1:16, when described inductor 92 has higher sensitivity, when avoiding inclined-plane excessive, hinders the disengaging of inductor 92 or causes the induction contact 921 of inductor 92 to produce larger displacement because shaking; When also avoiding gradient too small, after lightning arrester is breakdown, induction contact 921 displacement of inductor 92 is too small, affects the work of inductor 92, and then affects the reliability of this device.
When the utility model is installed, the induction contact of described inductor is pressed in the bottom of described positioning section in advance, and described spring is pressed between described resistor disc and disconnector in advance, in time puncturing, described hot melt conductor disconnects, described spring is released, described disconnector and rear end cap are ejected, thus make described induction contact depart from (as shown in Figure 3) from lightning arrester, or induction contact changes (as shown in Figure 4) in the position of Z axis and X-direction, no matter be depart from or displacement, described induction contact is relative to before breakdown, position all changes, thus TouchSensor, send signal.

Claims (3)

1. lightning arrester, comprise semi-conductive layer, insulating barrier, spool and disengaging actuating mechanism, described disengaging actuating mechanism is located on described spool, described insulating barrier wraps described spool and departs from actuating mechanism, described semi-conductive layer is located on the outer wall of described insulating barrier, described disengaging actuating mechanism comprises resistor disc, hot melt conductor, spring, disconnector and rear end cap, the bottom of described spool is located at by described resistor disc, described hot melt conductor is connected between described resistor disc and disconnector and described spring activity is located between described resistor disc and disconnector, it is characterized in that
Described semi-conductive layer comprises the positioning section, induction section and the canned paragraph that are connected, the lateral surface of described induction section is inclined-plane and described induction section is connected between described positioning section and canned paragraph, the diameter of described canned paragraph is less than the diameter of described positioning section, and described rear end cap is located at described canned paragraph;
Also comprise induction installation, described induction installation comprises support and inductor, and described is set up on described rear end cap, and described inductor is located on described support, and the induction contact of described inductor is depressed into the bottom of described positioning section.
2. lightning arrester according to claim 1, is characterized in that, described support is provided with adjustment hole and some installing holes, and described adjustment hole comprises at least two and intersects the through hole arranged.
3. lightning arrester according to claim 1, is characterized in that, the gradient on the inclined-plane of described induction section is 1:2 ~ 1:16.
CN201520399646.1U 2015-06-11 2015-06-11 Lightning arrester Active CN204651113U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520399646.1U CN204651113U (en) 2015-06-11 2015-06-11 Lightning arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520399646.1U CN204651113U (en) 2015-06-11 2015-06-11 Lightning arrester

Publications (1)

Publication Number Publication Date
CN204651113U true CN204651113U (en) 2015-09-16

Family

ID=54103832

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520399646.1U Active CN204651113U (en) 2015-06-11 2015-06-11 Lightning arrester

Country Status (1)

Country Link
CN (1) CN204651113U (en)

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