CN202167303U

CN202167303U - Lightning-protection overvoltage protector

Info

Publication number: CN202167303U
Application number: CN2011203061070U
Authority: CN
Inventors: 刘敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-03-14
Anticipated expiration: 2021-08-22

Abstract

The utility model discloses a lightning-protection overvoltage protector and relates to the field of 10KV electricity utilization of electricity, telecommunication, railway and oil field. The lightning-protection overvoltage protector comprises a protector (1), a connecting plate A (2), a connecting plate B (3), an insulator (4) and an insulating conductor (5) and is characterized in that a lightning rod (6) is arranged at the upper end of the protector (1), the connecting plate B (3) is connected at the lower end of the protector (1) through a nut, the connecting plate A is connected at the lower end of the insulator (4) through a nut, the connecting plate A and the connecting plate B are connected through a nut, the insulating conductor (5) is fixedly connected with the upper end of the insulator (4) through a hoop (7), a static clearance ball (8) is connected with a position on the insulating conductor (5) near the lightning rod, and a clearance is reserved between the static clearance ball and the lightning rod. The lightning-protection overvoltage protector solves the problem of a bad discharging effect and the like and has the advantages of maintenance-free performance, long service life and good discharging effect.

Description

The lightning protection overvoltage protection device

Technical field

The utility model relates to electric power, telecommunications, railway, oil field 10KV and uses electrical domain, a kind of specifically lightning protection overvoltage protection device.

Background technology

The existing thunderbolt precautionary technology that is used for the distribution network insulated conductor mainly contains " dredging " and " obstruction " dual mode.So-called " dredging " is exactly with near the local bare wireization of the lead of becoming attached to the insulator; Making power frequency arc arc root shift or be fixed on the special gold utensil burns; Thereby guardwire avoids burn, and for example insulating barrier employing arc protection molded lines folder is peeled off at insulator and lead junction by Finland, and the Sweden and the U.S. peel off the insulated conductor of insulator both sides one section insulating barrier and install the preventing arc wire clamp additional; Simple to operate, the small investment of this type technology; But local exposed, the defective of existence sealing and insulation aspect, and line clamping device is easy to break down because of anti-seismic performance is relatively poor.So-called " obstructions " is exactly to stop the power frequency continued flow starting the arc, the for example a large amount of employing of Japan line insulator lightning protection overvoltage protection devices, i.e. sphere gap metal zinc oxide lightning arresters behind the lightning stroke flashover; But its complex structure; Cost is high, inconvenient installation, and sphere gap is regulated also cumbersome.

The pure clearance lightning-proof gold utensil of the puncture of present domestic like product anti-thunderbolt wire clamp: the gap discharge that just punctures does not have protection of arrester, and discharge effect is bad, does not have effect.In this transient process of atmospheric over-voltage; Different amplitudes and wavelength adopt " pure gap " protected mode system's decompression and relaying protection would trip in short-term can occur; Secondly " pure gap " discharge voltage dispersiveness is very big; Even played lightning-arrest effect under these circumstances, but be definitely disadvantageous, do not bring bigger problem and loss because solve existing issue to power supply quality.

Summary of the invention

The purpose of the utility model is for overcoming domestic similar deficiency, a kind of lightning protection overvoltage protection device is provided, mainly from natural electric field, being absorbed and storing energy by exciter.The lightning arrester needle point is in the equipotential state.So generally; Before lightning took place, electric field strength can rapidly increase, and the potential difference between exciter and the reactor roughly is equivalent to the current potential between thundercloud and the earth; Voltage drop between them increases sharply and can cause most advanced and sophisticated and the ball discharge sparking; And making most advanced and sophisticated ambient air ionization, the electric discharge phenomena that taper off to a point are accomplished discharge for the first time.Electric field between the central authorities of following two lightning rods collection bar and the exciter increases sharply and causes the most advanced and sophisticated air ionization that produces in extremely short and correct time, to discharge for the second time; Because of a large amount of electro-ionic existence; Thereby the Corona effect of nature is lowered; Generation one expection ascending charge passage can return thunder and lightning rapidly, safely and the insulator protector realization release for the third time of releasing safely is discharged into the earth through connecting struts plate and cross-arm.Finish whole discharge processes.

The utility model solves the technical scheme that its technical problem adopted: a kind of lightning protection overvoltage protection device; Comprise that protector 1, connecting plate A2, connecting plate B3, insulator 4 and insulated conductor 5 is characterized in that: said protector 1 upper end is provided with lightning rod 6; Protector 1 lower end is connected with connecting plate B3 through nut; Said insulator 4 lower ends are connected with connecting plate A through nut, and connecting plate A is connected through nut with connecting plate B, and said insulator 4 upper ends are fixedly connected with insulated conductor 5 through anchor ear 7; Be connected with quiet gap ball 8 near the lightning rod place on the said insulated conductor 5, leave the gap between said quiet gap ball and the lightning rod.

The height of said connecting plate B can through with connecting plate B between be connected and regulate.

Said protector main body 1 outer surface is provided with insulation crust, said insulation crust both ends open, and set inside has current limiting element

Description of drawings

Fig. 1 is the structure chart of the utility model.

1 is protector among the figure, the 2nd, and connecting plate A, the 3rd, connecting plate B, the 4th, insulator, the 5th, insulated conductor, the 6th, lightning rod, the 7th, anchor ear, the 8th, quiet gap ball.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified:

As shown in Figure 1; The utility model is a kind of lightning protection overvoltage protection device; Comprise that protector 1, connecting plate A2, connecting plate B3, insulator 4 and insulated conductor 5 is characterized in that: said protector 1 upper end is provided with lightning rod 6, and protector 1 lower end is connected with connecting plate B3 through nut, and said insulator 4 lower ends are connected with connecting plate A through nut; Connecting plate A is connected through nut with connecting plate B; Said insulator 4 upper ends are fixedly connected with insulated conductor 5 through anchor ear 7, are connected with quiet gap ball 8 near the lightning rod place on the said insulated conductor 5, leave the gap between said quiet gap ball and the lightning rod.

Hot-end component, discharge tube, negative electrode, anode, expanding with heat and contract with cold of escape pipe and thermal part base itself can cause the flexible of thermal part base.Owing to is connected through line slideway between the two ends of thermal part base and the optical substrate, so stretching of thermal part base can not seem angle through the relative position that optical mount has influence between two chamber mirrors (outgoing mirror and tail mirror).Thereby realized the stable of optics cavity mirror.Quiet gap discharge ball can be transformed into and can puncture and do not puncture, and the top of the bottom ball discharge of contact wire has individual adjustable screw to remove screw to puncture exactly, just do not puncture by tightening up a screw.The link front end is to be convenient to insert inside in insulator pressurized fashion about the about 30-45 degree of slope to conductive connection plates A in insulator bolt place; Conductive connection plates A and B conductive connection plates all become AB plate junction, 90 degree right angle to be used for these two bolts that conductive connection plates tightens together with being provided with, and conductive connection plates A and B conductive connection plates junction have one or two strip hole bolts can on two connecting plates, slide up and down any locking and regulate highly.Spray point or diameter resemble the drainage sphere of half table tennis size.The discharge lightning rod takes advanced foreign technology and technology specialty to process, and mainly from natural electric field, is absorbed and storing energy by exciter.The lightning arrester needle point is in the equipotential state.So generally; Before lightning took place, electric field strength can rapidly increase, and the potential difference between exciter and the reactor roughly is equivalent to the current potential between thundercloud and the earth; Voltage drop between them increases sharply and can cause most advanced and sophisticated and the ball discharge sparking; And making most advanced and sophisticated ambient air ionization, the electric discharge phenomena that taper off to a point are accomplished discharge for the first time.Electric field between the central authorities of following two lightning rods collection bar and the exciter increases sharply and causes the most advanced and sophisticated air ionization that produces in extremely short and correct time, to discharge for the second time; Because of a large amount of electro-ionic existence; Thereby the Corona effect of nature is lowered; Generation one expection ascending charge passage can return thunder and lightning rapidly, safely and the insulator protector realization release for the third time of releasing safely is discharged into the earth through connecting struts plate and cross-arm.Finish whole discharge processes.Strike sparks between drainage sphere and the quiet gap discharge ball, and make the ambient air ionization, form electric discharge phenomena, accomplish discharge for the first time.The protector main body comprises insulation crust, the both ends open of described insulation crust, and inside is the cavity of putting said current limiting element, and the protector upper and lower are installed with conducting connecting part, and the bottom is installed with screw rod and conducting bracket link.Top links with spray point or hemisphere profile.Line insulator lightning protection overvoltage protection device and line insulator, lead are parallelly connected, and the cooperation through the series gap between protector current limiting element, current limiting element lightning rod and the lead drainage ball reaches lightning-arrest purpose.When circuit receives Lightning Over-voltage; When induction overvoltage does not reach insulator arc-over as yet; Lead drainage ball and protector current limiting element drainage lightning rod gap begin discharge, and with the lightning current zinc oxide current limiting element that leads, lightning current discharges through the zinc oxide current limiting element afterwards; The then oxidized zinc current limiting element of power frequency continued flow blocks, and reaches the purpose of " taking shelter from the thunder ".When power-frequency overvoltage (Millisecond) appears in short-term in circuit; Even circuit is in weak insulation (power frequency withstand 38kV); Lightning arrester still guarantees discharge, plays a protective role, thereby prevents because of power frequency continued flow high temperature fusing insulated circuit (lightning-caused breaking and insulator arc-over); The protection insulated circuit is avoided breaking, insulator arc-over and the huge economic compensation that causes the loss of large-area power-cuts, electricity sales amount and cause great personal injury accident and cause thus.

Product is made up of several parts such as zinc oxide current limiting element nonlinear resistance part (protector-wrapped up by composite material), special external series gap (lightning rod, quiet gap ball, penetrating cable clamp and protective cover), lead drainage ball, connecting struts plate (height is adjustable), standing part (anchor ear, clamp nut), standard drainage sphere gap instruments jointly, need not divest the existing insulating barrier of insulated cable during installation.When circuit normally moves, the effect that the nonlinear resistor of product part is not born continuous power-frequency voltage.Only after sphere gap action under the lightning overvoltage effect of certain amplitude, the current limiting element body is just in running order, so its external insulation level can be lower than arrester without gaps for current limiting element.On the circuit of normal operation, the ability of enough tolerance switching overvoltages is arranged, can select gap length to avoid the action of switching overvoltage effect.The parameter designing of product has been considered the impulse flashover voltage of insulator under filthy condition, and therefore, also not before the flashover, protective device already moves, and reaches the protection purpose at insulator.Because of the effect of sphere gap, the mounting means and the mode of connection do not influence the normal operation of circuit.

Operation principle:

The discharge lightning rod takes advanced foreign technology and technology specialty to process, and mainly from natural electric field, is absorbed and storing energy by exciter.The lightning arrester needle point is in the equipotential state.So generally; Before lightning took place, electric field strength can rapidly increase, and the potential difference between exciter and the reactor roughly is equivalent to the current potential between thundercloud and the earth; Voltage drop between them increases sharply and can cause most advanced and sophisticated and the ball discharge sparking; And making most advanced and sophisticated ambient air ionization, the electric discharge phenomena that taper off to a point are accomplished discharge for the first time.Electric field between the central authorities of following two lightning rods collection bar and the exciter increases sharply and causes the most advanced and sophisticated air ionization that produces in extremely short and correct time, to discharge for the second time; Because of a large amount of electro-ionic existence; Thereby the Corona effect of nature is lowered; Generation one expection ascending charge passage can return thunder and lightning rapidly, safely and the insulator protector realization release for the third time of releasing safely is discharged into the earth through connecting struts plate and cross-arm.Finish whole discharge processes.Line insulator lightning protection overvoltage protection device and line insulator, lead are parallelly connected, and the cooperation through the series gap between protector current limiting element, current limiting element lightning rod and the lead drainage ball reaches lightning-arrest purpose.When circuit receives Lightning Over-voltage; When induction overvoltage does not reach insulator arc-over as yet; Lead drainage ball and protector current limiting element drainage lightning rod gap begin discharge, and with the lightning current zinc oxide current limiting element that leads, lightning current discharges through the zinc oxide current limiting element afterwards; The then oxidized zinc current limiting element of power frequency continued flow blocks, and reaches the purpose of " taking shelter from the thunder ".When power-frequency overvoltage (Millisecond) appears in short-term in circuit; Even circuit is in weak insulation (power frequency withstand 38kV); Lightning arrester still guarantees discharge, plays a protective role, thereby prevents because of power frequency continued flow high temperature fusing insulated circuit (lightning-caused breaking and insulator arc-over); The protection insulated circuit is avoided breaking, insulator arc-over and the huge economic compensation that causes the loss of large-area power-cuts, electricity sales amount and cause great personal injury accident and cause thus.

Claims

1. lightning protection overvoltage protection device; Comprise that protector main body (1), connecting plate A (2), connecting plate B (3), insulator (4) and insulated conductor (5) is characterized in that: said protector main body (1) upper end is provided with lightning rod (6); Protector main body (1) lower end is connected with connecting plate B (3) through nut; Said insulator (4) lower end is connected with connecting plate A through nut, and connecting plate A is connected through nut with connecting plate B, and said insulator (4) upper end is fixedly connected with insulated conductor (5) through anchor ear (7); Said insulated conductor (5) is gone up and is connected with quiet gap ball (8) near the lightning rod place, leaves the gap between said quiet gap ball and the lightning rod.

2. a kind of lightning protection overvoltage protection device according to claim 1 is characterized in that: the height of said connecting plate B can through with connecting plate B between be connected and regulate.

3. a kind of lightning protection overvoltage protection device according to claim 1 is characterized in that: said protector main body (1) outer surface is provided with insulation crust, said insulation crust both ends open, and set inside has current limiting element.