CN201681780U - Lightening-proof fuse with reliable alarming and surge overvoltage protection device thereof - Google Patents
Lightening-proof fuse with reliable alarming and surge overvoltage protection device thereof Download PDFInfo
- Publication number
- CN201681780U CN201681780U CN2010201979435U CN201020197943U CN201681780U CN 201681780 U CN201681780 U CN 201681780U CN 2010201979435 U CN2010201979435 U CN 2010201979435U CN 201020197943 U CN201020197943 U CN 201020197943U CN 201681780 U CN201681780 U CN 201681780U
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- electrode
- metal bar
- lightning protection
- insulated tube
- protection fuse
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Abstract
The utility model provides a lightening-proof fuse with reliable alarming and a surge overvoltage protection device thereof, which relates to a surge protector product. The lightening-proof fuse comprises the following components: an insulation tube, an electrode A, a wiring terminal of electrode B, a metal rod, a compression spring and a triggering device. The surge overvoltage protection device with the lightening-proof fuse comprises the following components: the lightening-proof fuse with reliable alarming, a voltage sensitive resistor and two pins. The surge overvoltage protection device can be the other structure which comprises the following components: the lightening-proof fuse with reliable alarming, a voltage sensitive resistor, a gas discharge tube and two pins. The beneficial effects of the lightening-proof fuse with reliable alarming are characterized in that: when the voltage sensitive resistor is shorted and the temperature increase is over-high, the surge overvoltage protection device designed through the pressure sensitive resistor can detach from conductive connection with a power supply system thereby preventing the caused fire disaster; the surge overvoltage protection device designed through the voltage sensitive resistor is free from a failure mode with alarming incapability as overlarge pulse current and voltage sensitive resistor burst.
Description
Technical field
The utility model relates to the Surge Protector product; more particularly; relate to a kind of when the Zinc-oxide piezoresistor short circuit was lost efficacy; cut off the electricity supply reliably the overvoltage surge protective device that provides the lightning protection fuse of alarm signal simultaneously and use this lightning protection fuse to design takes place with the fire that prevents to cause because of the piezo-resistance short circuit.It is widely used in the overvoltage surge protection at power-supply device, electrical installation, network system and communication equipment station etc.
Background technology
The overvoltage surge that is produced in order to prevent to be struck by lightning is to the destruction of being caused at power-supply device, electrical installation, network system and communication equipment station etc., and it is that surge protective device is SPD that lightning protection device generally is installed.
The power surge protective device SPD of prior art is mainly by piezo-resistance; components and parts such as gas discharge tube and air gap constitute; particularly the metal oxide piezo-resistance is widely used in the power supply phase line especially zero line and phase line is protected the overvoltage surge between the phase line; and there are two kinds of failure modes in piezo-resistance; under thunderbolt short pulse situation; when piezo-resistance can not be born its surge current peak value; piezo-resistance bursts; show as open failure; under power-supply system obstacle and frequent macro-energy switching overvoltage effect; the piezo-resistance thermal breakdown shows as short circuit and lost efficacy.The piezo-resistance short circuit was lost efficacy and designed irrational short circuit abating protection device is the immediate cause that causes power-supply system overvoltage surge protective device SPD breaking out of fire often.
Among the overvoltage surge protective device SPD of existing power supply system, the hot release unit of the piezo-resistance of design provides unreliable under the huge situation of current capacity in power-supply system.Market demand is a kind of to be provided under the huge situation of current capacity in power-supply system; reliably cut off the electricity supply when losing efficacy electric current and have the lightning protection fuse of warning function of piezo-resistance short circuit prevents power-supply system etc. because the fire that causes because of the piezo-resistance short circuit among the overvoltage surge protective device SPD takes place.
The utility model content
The utility model is intended to the above-mentioned deficiency and the market demand at prior art; release reliable alarm lightning protection fuse and overvoltage surge protective device thereof; this lightning protection insurance silk ribbon overcurrent fusing; desuperheating from and function such as warning; particularly it can allow the overcurrent that is produced by thunderbolt of certain value flow through; when the overcurrent of thunderbolt generation surpasses its rated value; this blown fuse is reported to the police; eliminating bursts the open loop failure mode that can not report to the police because of piezo-resistance; again can be during overheated and thermal breakdown short circuit to piezo-resistance; cut off the electricity supply reliably electric current and provide alarm signal; prevent because pulse current is excessive the piezo-resistance open failure that causes and can not report to the police and the piezo-resistance short circuit causes breaking out of fires such as power-supply system when losing efficacy.
To achieve these goals, finish above-mentioned task, the utility model reliable alarm lightning protection fuse and overvoltage surge protective device thereof adopt following technical scheme:
Construct the utility model reliable alarm lightning protection fuse, comprise binding post, metal bar, compression spring and the trigger equipment of insulated tube, A electrode, B electrode; The upper end of insulated tube is installed and be plugged in to the A electrode, and insulated tube is a hollow pipe, and metal bar puts in the insulated tube and can slide up and down in pipe along the length direction of insulated tube; Metal bar comprises excellent body and the socket that is overall shaped into one, and the diameter of described socket is littler than the diameter of described excellent body, and described socket is positioned at the upper end of leaning on of metal bar; Stretch out the through hole of the termination of described socket from the A electrode, and by termination and the A electrode welding of low melting point welding alloy with described socket; Be positioned at the described socket part overcoat Teflon insulating case of insulated tube, the described socket part in the insulated tube closely cooperated with insulated tube formation by the Teflon insulating case; The lower end of the described excellent body of metal bar is positioned at outside the insulated tube, the compression spring encloses the lower end that cover is installed on the described excellent body that is positioned at the metal bar outside the insulated tube, the upper end and the insulated tube of compression spring offset, and the lower end of compression spring offsets with the lower end that is positioned at the described excellent body of the metal bar outside the insulated tube; The binding post of B electrode is electrically connected at the lower end of metal bar; Trigger equipment is installed on the below of metal bar, between trigger equipment and metal bar, reserve when the described socket of metal bar melted disconnected or desuperheating from after the described rod of metal bar in compressing room from the spring force effect to lower slider that touch trigger equipment under.
Appearance brushing dielectric film at the described excellent body of metal bar reduces the dielectric strength of insulated tube to prevent metal bar in sliding process.
A electrode and insulated tube are fixed with epoxy resin.
Insulated tube and substrate are an integral body, and trigger equipment is anchored on the substrate, and fixing by epoxy resin layer 16.
Insulated tube is earthenware or glass tube.
Trigger equipment forms being connected of conducting or disconnection with warning device, and trigger equipment can be a sensitive switch.
The overvoltage surge protective device; comprise reliable alarm lightning protection fuse, piezo-resistance and two pins; piezo-resistance is series between the A electrode of described pin in two described pins and reliable alarm lightning protection fuse, and another the described pin in the binding post of the B electrode of reliable alarm lightning protection fuse and two the described pins electrically connects.
The binding post of the B electrode of reliable alarm lightning protection fuse is by the multiply that is flexible coupling of tape insulation layer
The described pin of in lead or elastic spring and two the described pins another electrically connects.
The overvoltage surge protective device; it also can be another structure; it comprises reliable alarm lightning protection fuse; piezo-resistance; gas discharge tube and two pins; a described pin in electrode of gas discharge tube and two the described pins electrically connects; an electrode of another electrode of gas discharge tube and piezo-resistance electrically connects; the A electrode of another electrode of piezo-resistance and reliable alarm lightning protection fuse electrically connects, another the described pin electric connection in the binding post of the B electrode of reliable alarm lightning protection fuse and two the described pins.。
The binding post of the B electrode of reliable alarm lightning protection fuse electrically connects by another described pin in be flexible coupling stranded conductor or elastic spring and two the described pins of tape insulation layer.
Mechanism of the present utility model is:
In two kinds of overvoltage surge protective devices that reliable alarm lightning protection fuse uses, if the temperature of piezo-resistance rises when making the termination of the described socket that low-temperature alloy can not the fixing metal rod, metal bar glides rapidly to breaking away to conduct electricity under the elastic force effect of compression spring and connects, when gliding rapidly, percussion trigger equipment such as sensitive switch, connect the warning device loop, sending the overvoltage surge protective device is the alarm signal that SPD lost efficacy; When pulse current overrate and the inefficacy of piezo-resistance instantaneous short circuit; the described socket place fusing of metal bar; metal bar glides rapidly to breaking away to conduct electricity under the elastic force effect of compression spring and connects; when gliding rapidly; percussion trigger equipment such as sensitive switch; connect the warning device loop; send the alarm signal that the overvoltage surge protective device lost efficacy; the size of its specified pulse current is by the cross-sectional area decision of the described socket of metal bar, the failure mode that can not report to the police in order to eliminate piezo-resistance to burst open failure.In a word, the utility model can eliminate that piezo-resistance bursts open failure and the failure mode that can not report to the police, again can be during overheated and thermal breakdown short circuit to piezo-resistance, cut off the electricity supply reliably and provide alarm signal, prevent because pulse current is excessive the open failure that causes and can not protect alert and cause breaking out of fire such as power-supply system during the piezo-resistance short circuit.
The advantage that has following several respects is at least put in the utility model reliable alarm lightning protection fuse and overvoltage surge protection thereof:
One makes by the overvoltage surge protective device of piezo-resistance design when piezo-resistance short circuit and temperature rise are too high, and this overvoltage surge protective device can break away from conduction with power-supply system reliably and be connected, and prevents the fire incident generation that causes thus.
Its two, make by the overvoltage surge protective device of piezo-resistance design and got rid of the failure mode that can not report to the police because the excessive piezo-resistance of pulse current bursts.
Its three, under the effect of spring, can break away from conduction rapidly when losing efficacy and connect by the overvoltage surge protective device of piezo-resistance design.
Its four because the elasticity of friction tight Teflon pipe exists and the excellent electric insulation performance, can not produce a large amount of metallic vapours during the fusing of fine line diameter wire, stop the extension of electric arc simultaneously reliably.
Its five, purposes is wide, the destruction that the overvoltage surge that being applicable to prevents to be struck by lightning is produced is caused power-supply device, electrical installation, network system and communication equipment station etc.
Description of drawings
Fig. 1 is a reliable alarm lightning protection fuse schematic perspective view;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A cut-away view;
Fig. 4 is the partial enlarged drawing of Fig. 3.
Fig. 5 is an overvoltage surge protective device schematic diagram;
Fig. 6 is the circuit connection diagram of Fig. 4;
Fig. 7 is the another kind of structural representation of overvoltage surge protective device;
Fig. 8 is the circuit connection diagram of Fig. 6.
Among the figure: 100, reliable alarm lightning protection fuse; 1, insulated tube; 2, A electrode; 3, the binding post of B electrode; 4, metal bar; 41, excellent body; 42, socket; 5, compression spring; 6, trigger equipment; 7, low melting point welding alloy; 8, Teflon insulating case; 9, room; 10, substrate; 11, dielectric film; 12, piezo-resistance; 13, gas discharge tube; 14, pin; 15, the be flexible coupling stranded conductor or the elastic spring of tape insulation layer; 16, epoxy resin layer.
Embodiment
Below, introduce embodiment of the present utility model in conjunction with the accompanying drawings.
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, construct the utility model reliable alarm lightning protection fuse 100, comprise binding post 3, metal bar 4, compression spring 5 and the trigger equipment 6 of insulated tube 1, A electrode 2, B electrode; The upper end of insulated tube 1 is installed and be plugged in to A electrode 2, and insulated tube 1 is a hollow pipe, and metal bar 4 puts in insulated tube 1 in along the length direction of insulated tube 1 and also can slide up and down in pipe; Metal bar 4 comprises excellent body 41 and the socket 42 that is overall shaped into one, and the diameter of described socket 42 is littler than the diameter of described excellent body 41, and described socket 42 is positioned at the upper end of leaning on of metal bar 4; Stretch out the through hole of the termination of described socket 42 from A electrode 2, and by termination and A electrode 2 welding of low melting point welding alloy 7 with described socket 42; Be positioned at the described socket 42 part overcoat Teflon insulating cases 8 of insulated tube 1, described socket 42 parts and insulated tube 1 formation in the insulated tube 1 closely cooperated by Teflon insulating case 8; The lower end of the described excellent body 41 of metal bar 4 is positioned at outside the insulated tube 1, compression spring 5 encloses the lower end that cover is installed on the described excellent body 41 of the metal bar 4 that is positioned at outside the insulated tube 1, the upper end and the insulated tube 1 of compression spring 5 offset, and the lower end of compression spring 5 offsets with the lower end that is positioned at the described excellent body 41 of the metal bar 4 outside the insulated tube 1; The binding post 3 of B electrode is electrically connected at the lower end of metal bar 4; Trigger equipment 6 is installed on the below of metal bar 4, between trigger equipment 6 and metal bar 4, reserve when the described socket 42 of metal bar 4 melted disconnected or desuperheating from after the described excellent body 41 of metal bar 4 compressing room 9 from the spring 5 elastic force effects to lower slider that touch trigger equipment 6 under.
Appearance brushing dielectric film 11 at the described excellent body 41 of metal bar 4 reduces the dielectric strength of insulated tube 1 to prevent metal bar 4 in sliding process.
A electrode 2 is fixing with insulated tube 1 usefulness epoxy resin layer 16.
As Fig. 5, shown in Figure 6; the overvoltage surge protective device; comprise reliable alarm lightning protection fuse 100, piezo-resistance 12 and two pins 14; piezo-resistance 12 is series at 2 at the A electrode of described pin 14 in two described pins 14 and reliable alarm lightning protection fuse 100, and another the described pin 14 in the binding post 3 of the B electrode of reliable alarm lightning protection fuse 100 and two the described pins 14 electrically connects.
The binding post 3 of the B electrode of reliable alarm lightning protection fuse 100 electrically connects by another the described pin 14 in be flexible coupling stranded conductor or elastic spring 15 and two the described pins 14 of tape insulation layer.
As Fig. 7; shown in Figure 8; the overvoltage surge protective device; it also can be another structure; it comprises reliable alarm lightning protection fuse 100; piezo-resistance 12; gas discharge tube 13 and two pins 14; a described pin 14 in electrode of gas discharge tube 13 and two the described pins 14 electrically connects; an electrode of another electrode of gas discharge tube 13 and piezo-resistance 12 electrically connects; the A electrode 2 of another electrode of piezo-resistance 12 and reliable alarm lightning protection insurance 100 electrically connects, another described pin 14 electric connections in the binding post 3 of the B electrode of reliable alarm lightning protection fuse 100 and two the described pins 14.
The binding post 3 of the B electrode of reliable alarm lightning protection fuse 100 electrically connects by another described pin 14 in be flexible coupling stranded conductor or elastic spring 15 and two the described pins 14 of tape insulation layer.
When installing on the spot, two described pins 14 are connected with corresponding circuit, and trigger equipment 6 and warning device electric connection are got final product, very easy.
Claims (10)
1. reliable alarm lightning protection fuse is characterized in that: the binding post (3), metal bar (4), compression spring (5) and the trigger equipment (6) that comprise insulated tube (1), A electrode (2), B electrode; The upper end of insulated tube (1) is installed and be plugged in to A electrode (2), and insulated tube (1) is a hollow pipe, and metal bar (4) puts in the insulated tube (1) and can slide up and down in pipe along the length direction of insulated tube (1); Metal bar (4) comprises excellent body (41) and the socket (42) that is overall shaped into one, and the diameter of described socket (42) is littler than the diameter of described excellent body (41), and described socket (42) is positioned at the upper end of leaning on of metal bar (4); Stretch out the through hole of the termination of described socket (42) from A electrode (2), and by termination and A electrode (2) welding of low melting point welding alloy (7) with described socket (42); Be positioned at described socket (42) the part overcoat Teflon insulating case (8) of insulated tube (1), described socket (42) part in the insulated tube (1) closely cooperated with insulated tube (1) formation by Teflon insulating case (8); The lower end of the described excellent body (41) of metal bar (4) is positioned at outside the insulated tube (1), compression spring (5) encloses the lower end that cover is installed on the described excellent body (41) of the metal bar (4) that is positioned at outside the insulated tube (1), the upper end and the insulated tube (1) of compression spring (5) offset, and the lower end of compression spring (5) offsets with the lower end that is positioned at the described excellent body (41) of the metal bar (4) outside the insulated tube (1); The binding post of B electrode (3) is electrically connected at the lower end of metal bar (4); Trigger equipment (6) is installed on the below of metal bar (4), between trigger equipment (6) and metal bar (4), reserve when the described socket (42) of metal bar (4) melted disconnected or desuperheating from after the described excellent body (41) of metal bar (4) compressing room (9) from spring (5) the elastic force effect to lower slider that touch trigger equipment (6) under.
2. reliable alarm lightning protection fuse according to claim 1 is characterized in that: the appearance brushing dielectric film (11) at the described excellent body (41) of metal bar (4), reduce the dielectric strength of insulated tube (1) to prevent metal bar (4) in sliding process.
3. reliable alarm lightning protection fuse according to claim 1 is characterized in that: A electrode (2) is fixing with epoxy resin layer (16) with insulated tube (1).
4. reliable alarm lightning protection fuse according to claim 1 (100) is characterized in that: insulated tube (1) is an integral body with substrate (10), and trigger equipment (6) is anchored on the substrate (10).
5. reliable alarm lightning protection fuse according to claim 1 is characterized in that: insulated tube (1) is earthenware or glass tube.
6. reliable alarm lightning protection fuse according to claim 1 is characterized in that: trigger equipment (6) forms being connected of conducting or disconnection with warning device, and trigger equipment (6) is a sensitive switch.
7. overvoltage surge protective device; it is characterized in that: comprise described any one reliable alarm lightning protection fuse (100) of claim 1-6, piezo-resistance (12) and two pins (14); piezo-resistance (12) is series between the A electrode (2) of described pin (14) in two described pins (14) and reliable alarm lightning protection fuse (100), and the binding post (3) of the B electrode of reliable alarm lightning protection fuse (100) electrically connects with another described pin (14) in two described pins (14).
8. overvoltage surge protective device according to claim 7 is characterized in that: the binding post (3) of the B electrode of reliable alarm lightning protection fuse (100) electrically connects by another the described pin (14) in be flexible coupling stranded conductor or elastic spring (15) and two the described pins (14) of tape insulation layer.
9. overvoltage surge protective device; it is characterized in that: comprise described any one reliable alarm lightning protection fuse (100) of claim 1-6; piezo-resistance (12); gas discharge tube (13) and two pins (14); the electrode and the described pin (14) in two described pins (14) of gas discharge tube (13) electrically connect; an electrode of another electrode of gas discharge tube (13) and piezo-resistance (12) electrically connects; the A electrode (2) of another electrode of piezo-resistance (12) and reliable alarm lightning protection fuse (100) electrically connects, and another the described pin (14) in the binding post (3) of the B electrode of reliable alarm lightning protection fuse (100) and two the described pins (14) electrically connects.
10. overvoltage surge protective device according to claim 9 is characterized in that: the binding post (3) of the B electrode of reliable alarm lightning protection fuse (100) electrically connects by another described pin (14) in be flexible coupling stranded conductor or elastic spring (15) and two the described pins (14) of tape insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201979435U CN201681780U (en) | 2010-05-20 | 2010-05-20 | Lightening-proof fuse with reliable alarming and surge overvoltage protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201979435U CN201681780U (en) | 2010-05-20 | 2010-05-20 | Lightening-proof fuse with reliable alarming and surge overvoltage protection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201681780U true CN201681780U (en) | 2010-12-22 |
Family
ID=43346816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201979435U Expired - Lifetime CN201681780U (en) | 2010-05-20 | 2010-05-20 | Lightening-proof fuse with reliable alarming and surge overvoltage protection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201681780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847858A (en) * | 2010-05-20 | 2010-09-29 | 曾献昌 | Lightning-protection fuse with reliable alarm and overvoltage surge protection device thereof |
| CN108573838A (en) * | 2017-03-09 | 2018-09-25 | 菲尼克斯电气公司 | Cutting member and overvoltage protective module |
-
2010
- 2010-05-20 CN CN2010201979435U patent/CN201681780U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847858A (en) * | 2010-05-20 | 2010-09-29 | 曾献昌 | Lightning-protection fuse with reliable alarm and overvoltage surge protection device thereof |
| CN101847858B (en) * | 2010-05-20 | 2012-09-05 | 曾献昌 | Lightning-protection fuse with reliable alarm and overvoltage surge protection device thereof |
| CN108573838A (en) * | 2017-03-09 | 2018-09-25 | 菲尼克斯电气公司 | Cutting member and overvoltage protective module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101222 Effective date of abandoning: 20120905 |