CN204905851U - Take fail safe's source defend thunder equipment - Google Patents
Take fail safe's source defend thunder equipment Download PDFInfo
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- CN204905851U CN204905851U CN201520682451.8U CN201520682451U CN204905851U CN 204905851 U CN204905851 U CN 204905851U CN 201520682451 U CN201520682451 U CN 201520682451U CN 204905851 U CN204905851 U CN 204905851U
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- lightning protection
- piezo
- power supply
- binding post
- fail safe
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Abstract
The utility model provides a take fail safe's source defend thunder equipment, includes terminal wiring formula shell, the shell front side is equipped with the left binding post and the right binding post of inside intercommunication, the shell rear side is equipped with ground terminal, is equipped with an installation guide rail card below ground terminal, the shell is inside to be equipped with piezo -resistor, the module of discharging and fusible link, the module of discharging and fusible link are parallelly connected to the conjuncted left and right binding post of a termination, another termination piezo -resistor's one end, piezo -resistor's the other end and ground terminal are connected, the module of discharging is cliied two contacts that discharge in inside with two plastics clamping pieces, a slice barrier film has been put to the centre of two contacts that discharge, there is a round hole in the middle of the barrier film for the exoelectric intensity of control lightning protection, the module of discharging and fusible link have constituted the protection circuit that prevents the piezo -resistor inefficacy, make source defend thunder equipment not need external fuse or air switch when the installation again, have practiced thrift the expense of power lightning protection.
Description
Technical field
The utility model relates to power lightning protection field, is specifically related to a kind of lightning protection for power supply with fail safe.
Background technology
Lightning protection for power supply, also known as surge protector, also can claim Surge Protector, and english abbreviation is SPD, with lightning rod, lighting proof strip is different with the device that the outdoors such as lower lead-in wire prevent " direct thunder " to destroy, lightning protection for power supply is a kind of device preventing " induced lightening " to invade and harass being arranged on indoor, its operation principle adopts the lightning protection components such as piezo-resistance to be attempted by between protected power circuit and the earth end, when after the high voltage and heavy current impact power circuit of induction lightening generation, utilize the nonlinear characteristic of piezo-resistance, between power line, voltage between power line and the earth end is limited in lower level of protection, lightning current on power circuit can be imported rapidly the earth by piezo-resistance simultaneously, thus protect the safety being connected on lightning protection device rear end power consumption equipment.
Then, for the 10/350 waveform power source lightning protection device that discharge capacity is larger, its lightning impulse through repeatedly big current or after exceeding useful life, losing efficacy or cracking likely appears in the lightning protection component of its inside, most typical is that piezo-resistance presents short-circuit condition, so just by causing the protection switch of power circuit to trip, have a strong impact on normal power supply; So generally end of incoming cables serial connection fuse or air switch all will be specified when installing lightning protection for power supply, prevent the fault of lightning protection device itself with this.But, by the method connecting fuse or air switch and prevent the short circuit of lightning protection for power supply own, add the cost of lightning-protection system configuration, also occupy the space of controller switching equipment arrangement in addition, bring much inconvenience to the installation of lightning protection for power supply.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of lightning protection for power supply with fail safe, its objective is the fuse or the air switch that no longer need external against short-circuit when making to install and use lightning protection device.
The utility model solves the technical scheme that its technical problem adopts:
With a lightning protection for power supply for fail safe, comprise terminal connections formula shell, described shell front side is equipped with the left binding post of inner connection and right binding post, on rear side of described shell, earth terminal is housed, is provided with a mounting guide rail card below earth terminal.
Preferably, described enclosure is equipped with piezo-resistance, discharge module and fusible link, described discharge module and fusible link parallel connection, the left binding post of a termination of doublet and right binding post, one end of another termination piezo-resistance, the other end of piezo-resistance is connected with earth terminal.
Preferably, described discharge module is made up of two Plastic clamping pieces, two electric discharge contacts, a slice barrier film, two electrical discharge wires, four trip bolts and four clamp nuts.
Preferably, two electric discharge contacts are clamped by described two Plastic clamping pieces, the centre of described two electric discharge contacts is placed with a slice barrier film, and the outside of described two electric discharge contacts is respectively connected with an electrical discharge wire, and described two Plastic clamping pieces are fixed to clamp by four trip bolts and four clamp nuts.
Preferably, in the middle of described barrier film, there is a circular hole, by the barrier film of selecting thickness different with regard to the discharging gap between regulating discharging contact, by the intensity selecting the size of circular hole in the middle of described barrier film can control discharging current.
Preferably, described Plastic clamping piece and barrier film all adopt and can the high temperature resistant and polytetrafluoroethylplastic plastic insulated process; Described electric discharge contact is that the tungsten-copper alloy materials processing of high temperature resistant and resistance to calcination forms.
Wherein, what in normal power supplies lightning protection device, increase discharge module is the fuse and the air switching device that instead of exterior arrangement with the effect of fusible link; When power circuit is subject to the impacting with high pressure of induction lightening, rapid conducting between a kind of lightning protection for power supply internal discharge module two contact with fail safe described in the utility model, makes lightning current flow through after piezo-resistance ground discharge; And when piezo-resistance itself occurs fission and lost efficacy, the power current on power circuit will flow through the piezo-resistance of fusible link and short circuit, causes fusible link to disconnect rapidly, thus avoids out of order lightning protection for power supply to affect the normal power supply of power circuit.
The utility model has the advantages that: adopt a kind of lightning protection for power supply with fail safe of the present utility model, the device of lightning protection electric discharge and against short-circuit is added in the inside of normal power supplies lightning protection device, make lightning protection for power supply can bear larger induction lightening to impact, impact on power circuit when lightning protection for power supply itself can be prevented again to lose efficacy, like this when installing lightning protection for power supply described in the utility model, just do not need external configuration fuse and air switch; Adopt a kind of lightning protection for power supply with fail safe of the present utility model; may be used for the lightning protection of 10/350 larger waveform of discharge energy; and when slightly increasing original lightning protection device price; the fund input of user to power lightning protection system can be saved on the one hand; the space of installing fuse or air switch and additionally taking can be saved on the other hand, be conducive to the promotion and application of lightning protection for power supply.
Accompanying drawing explanation
Fig. 1 is the contour structures schematic diagram of a kind of lightning protection for power supply with fail safe disclosed in the utility model embodiment;
Fig. 2 is the circuit theory schematic diagram of a kind of lightning protection for power supply with fail safe disclosed in the utility model embodiment;
Fig. 3 is the discharge module structural representation of a kind of lightning protection for power supply with fail safe disclosed in the utility model embodiment;
Fig. 4 is the discharge module exploded view of a kind of lightning protection for power supply with fail safe disclosed in the utility model embodiment;
Wherein, 1-shell, the right binding post of 2-, the left binding post of 3-, 4-earth terminal, 4a-ground hole, 5-guide rail card, 6-piezo-resistance, 7-discharge module, 7a-Plastic clamping piece, 7b-discharges contact, 7c-barrier film, 7d-electrical discharge wire, 7e-trip bolt, 7f-clamp nut, 8-fusible link.
Embodiment
In order to deepen, to understanding of the present utility model, to be described in further detail the utility model below in conjunction with drawings and Examples, this embodiment, only for explaining the utility model, not forming protection range of the present utility model and limiting.
Embodiment
As shown in Figure 1, it is the contour structures of a kind of lightning protection for power supply with fail safe of the present embodiment, the material of shell 1 is fire-resistant engineering plastics, described shell 1 adopts the modular structure of terminal connections, left binding post 3 and the right binding post 2 of inner connection are equipped with in the front side of described shell 1, and the rear side of described shell 1 is equipped with earth terminal 4, and described earth terminal 4 is below with ground hole 4a, a mounting guide rail card 5 is provided with, the U-shaped guide rail of clamping bottom during for installing below earth terminal 4; Because the left binding post 3 on front side of described shell 1 is communicated with right binding post 2 inside, when installing the product of the present embodiment, as long as be connected on by power line in one of them terminal, another is as binding post for subsequent use; When the lightning protection for single phase poaer supply circuit, with the product of two the present embodiment, left and right binding post on front side of a shell 1 is started to exchange fire line (L), left and right binding post connecting to neutral line (N) on front side of another shell 1, and the earth terminal 4 on rear side of two product casings 1 to be linked together by ground hole 4a with wire, and then be connected to outside the earth terminal with wire from ground hole 4a; When the lightning protection for three-phase power supply system, then with the product of 4 the present embodiment, the front side binding post of four products to be connect respectively the power line of three-phase and four-line during wiring, then the earth terminal 4 of four products is connected with outside the earth terminal, for lightning current being imported the earth during lightning protection.
As shown in Figure 2, the circuit theory diagrams of a kind of lightning protection for power supply with fail safe of the present embodiment, as can be seen from the figure: after left binding post 3 and right binding post 2 inside link together, be connected with one end of discharge module 7 and fusible link 8 doublet again, one end of another termination piezo-resistance 6 of doublet, the other end of piezo-resistance 6 is connected with earth terminal 4; In use, left (or right) binding post will be connected with the power circuit that outside may be subject to lightning impulse the product of the present embodiment, and earth terminal 4 will be connected with outside the earth end nearby; The operation principle of this circuit is: if when the high voltage of induction lightening is applied on the binding post of left and right, the discharge module 7 connected and piezo-resistance 6 will conductings, major part lightning current just flows to the earth along discharge module 7 to the path of piezo-resistance 6, the lightning current of very fraction is only had to flow through the less fusible link of capacity 8, therefore fusible link 8 can not be caused to disconnect, lightning current can be imported the earth and repeatedly can bear lightning impulse by such mode, thus protects the safety being connected on lightning protection for power supply rear end power consumption equipment; If the piezo-resistance 6 in this circuit lost efficacy after short circuit, the power-frequency voltage be applied on a left side (or right) binding post is not enough to disruptive discharge module 7, therefore short circuit current can only import the earth through fusible link and piezo-resistance, at this moment fusible link will be rapid quick-fried disconnected, immediately the lightning protection component of existing inefficacy is departed from power circuit, ensure that the normal power supply of power circuit.
As shown in Figures 3 and 4, structure with discharge module in the lightning protection for power supply of fail safe of the present embodiment a kind of and parts explosion, the skin of described discharge module 7 is two square Plastic clamping piece 7a, there is circular cavity the inner side of described Plastic clamping piece 7a, the contact 7b that discharges respectively is had in two cavitys, the centre of two electric discharge contact 7b accompanies one deck barrier film 7c, the outside of two described electric discharge contact 7b respectively connects an electrical discharge wire 7d, and the other two ends of described electrical discharge wire 7d are also connected on described fusible link 8; There is a circular hole in the middle of described barrier film 7c, for the size of controlled discharge electric current, by selecting the thickness of barrier film 7c, can discharging gap be regulated and set the puncture voltage of discharge module 7; The polytetrafluoroethylmaterial material that described electric discharge intermediate plate 7a and barrier film 7c adopts can be high temperature resistant 260 DEG C, and have very high dielectric strength and very strong corrosion resistance, can prevent the electric leakage of discharge module 7; Described electric discharge contact adopts tungsten-copper alloy material to have performance that is high temperature resistant, arc ablation resistance, can stand multiple discharge and can not carbonize, greatly can extend the useful life of discharge module 7.
The course of work of the present embodiment is: the discharge module 7 that configuration one is in parallel in common power lightning protection device and fusible link 8, plays lightning protection electric discharge and short-circuit protection two kinds effect; When power circuit is subject to induction lightening impact, the gap of electric discharge contact 7b in the middle of high pressure lightning current disruptive discharge module 7, by the piezo-resistance 6 pairs of ground discharges connected; When the core parts piezo-resistance 6 itself because of lightning protection device lost efficacy and occurred short circuit, the short circuit current that power-frequency voltage is formed forms loop by the piezo-resistance 6 of fusible link 8 and short circuit to the earth or other circuit, cause fusible link rapid quick-fried disconnected, thus make the lightning protection for power supply of inefficacy depart from power circuit immediately, avoid causing adverse influence to supply line.
Pass through technique scheme, a kind of lightning protection for power supply with fail safe of the present utility model, the lightning protection of 10/350 waveform compared with macro-energy can be adapted to, it is by the form of protection device built-in in lightning protection for power supply, the original lightning protection characteristic of lightning protection for power supply can be kept, can prevent again lightning protection for power supply itself from breaking down and the impact caused power circuit, need not additional configuration fuse or air switch when making to install and use lightning protection for power supply, decrease the fund input of user to power lightning protection system, and decrease in distribution board the space of installing thunder resisting equipment, not only be conducive to the universal of power lightning protection technology, also the promotion and application of lightning protection for power supply are conducive to.
Above-described embodiment should not limit the utility model by any way, and the technical scheme that the mode that all employings are equal to replacement or equivalency transform obtains all drops in protection range of the present utility model.
Claims (5)
1. the lightning protection for power supply with fail safe; it is characterized in that: it comprises terminal connections formula shell (1); left binding post (3) and the right binding post (2) of inner connection are equipped with in described shell (1) front side; described shell (1) rear side is equipped with earth terminal (4), is provided with a mounting guide rail card (5) in earth terminal (4) below.
2. a kind of lightning protection for power supply with fail safe according to claim 1; it is characterized in that: piezo-resistance (6), discharge module (7) and fusible link (8) are equipped with in described shell (1) inside; described discharge module (7) and fusible link (8) parallel connection; the left binding post of one termination (3) of doublet and right binding post (2); one end of another termination piezo-resistance (6), the other end of described piezo-resistance (6) is connected with earth terminal (4).
3. a kind of lightning protection for power supply with fail safe according to claim 2, is characterized in that: described discharge module (7) is made up of two Plastic clamping pieces (7a), two electric discharges contact (7b), a slice barrier film (7c), two electrical discharge wires (7d), four trip bolts (7e) and four clamp nuts (7f).
4. a kind of lightning protection for power supply with fail safe according to claim 3; it is characterized in that: two electric discharges contact (7b) are clamped by described two Plastic clamping pieces (7a); the centre of described two electric discharges contact (7b) is placed with a slice barrier film (7c); the outside of described two electric discharges contact (7b) is respectively connected with an electrical discharge wire (7d), and described two Plastic clamping pieces (7a) are tightened by four trip bolts (7e) and four clamp nuts (7f).
5. a kind of lightning protection for power supply with fail safe according to claim 3; it is characterized in that: in the middle of described barrier film (7c), have a circular hole; by the barrier film (7c) of selecting thickness different with regard to the discharging gap between regulating discharging contact (7b), by the intensity selecting the size of circular hole in the middle of described barrier film (7c) that discharging current can be controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682451.8U CN204905851U (en) | 2015-09-06 | 2015-09-06 | Take fail safe's source defend thunder equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682451.8U CN204905851U (en) | 2015-09-06 | 2015-09-06 | Take fail safe's source defend thunder equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905851U true CN204905851U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520682451.8U Active CN204905851U (en) | 2015-09-06 | 2015-09-06 | Take fail safe's source defend thunder equipment |
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| Country | Link |
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| CN (1) | CN204905851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300241A (en) * | 2016-08-28 | 2017-01-04 | 安徽普天电力科技有限公司 | A kind of combination type low voltage Surge Protector |
| CN113345770A (en) * | 2021-07-02 | 2021-09-03 | 洛克美森智能电气有限公司 | Circuit breaker protector and junction box thereof |
-
2015
- 2015-09-06 CN CN201520682451.8U patent/CN204905851U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300241A (en) * | 2016-08-28 | 2017-01-04 | 安徽普天电力科技有限公司 | A kind of combination type low voltage Surge Protector |
| CN113345770A (en) * | 2021-07-02 | 2021-09-03 | 洛克美森智能电气有限公司 | Circuit breaker protector and junction box thereof |
| CN113345770B (en) * | 2021-07-02 | 2022-12-06 | 洛克美森智能电气有限公司 | Circuit breaker protector and junction box thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |