CN211480925U - Isolation lightning protection device - Google Patents

Abstract

The utility model discloses an isolation lightning protection device, which comprises an isolation suppression unit and a rear surge protector, wherein the isolation suppression unit outputs a first impedance value according to a first frequency value in a circuit; the rear-stage surge protector is connected with the output end of the isolation suppression unit to form an isolation lightning protection unit, and is connected with load equipment to discharge lightning current and reduce circuit voltage. The isolation lightning protection device of the utility model, the isolation suppression unit outputs impedance according to the circuit frequency to protect the load equipment, the energy matching problem before the front-stage and back-stage surge protectors and the decoupler can be ignored, the front-stage surge protector can be freely selected, and the lightning protection effect is not influenced; the volume and the weight are greatly reduced, the installation is convenient and flexible, and the installation cost and the labor cost are greatly reduced.

Description

Isolation lightning protection device

Technical Field

The utility model relates to a lightning protection design field, concretely relates to keep apart lightning protection device.

Background

With the coming of new-generation communication technology and the big data era of the internet of things, more and more communication base stations tend to be miniaturized or miniaturized, and meanwhile, the lightning protection device is required to be miniaturized, and the lightning protection device is flexible and convenient to install and select functions. At present, a two-port lightning protection box commonly adopted for lightning protection of an alternating current power supply port is very difficult to install due to large volume and weight, and can be installed only by more than two persons in a mutual matching way; and the selection and matching of the functional parameters are relatively fixed, so that the functional parameters need to be prepared at a manufacturer, and the functional parameters need to be replaced only by returning to the manufacturer. The prior art adopts two port lightning protection boxes, releases most thunder and lightning through preceding stage surge protector, and back stage surge protector further restricts the residual voltage residual current in the scope that can be born by protection equipment.

However, the starting voltage of the preceding surge protector, the inductance of the decoupler and the starting voltage of the subsequent surge protector need to be accurately calculated, and the optimal lightning protection effect cannot be achieved due to slight fluctuation of parameters; the volume of the decoupler is in direct proportion to the inductance and the rated current, so that the volume and the weight of the lightning protection box are large, the installation is difficult, and at least more than two persons are required to be installed in a matching way; the selection and matching of the functional parameters are relatively fixed, and the functional parameters need to be prepared at a manufacturer and can be replaced only by returning to the manufacturer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an keep apart lightning protection device aims at solving spare part energy cooperation, the great and inconvenient problem of spare part model parameter change of volume among the prior art.

In order to achieve the above purpose, the utility model provides an isolation lightning protection device, which comprises an isolation suppression unit and a rear-stage surge protector,

the isolation suppression unit outputs a first impedance value according to a first frequency value in the circuit;

the rear-stage surge protector is connected with the output end of the isolation suppression unit to form an isolation lightning protection unit, and is connected with load equipment to discharge lightning current and reduce circuit voltage.

Furthermore, the device also comprises an operating circuit formed by sequentially connecting an external power supply, the isolation suppression unit and the load equipment.

Furthermore, the isolation lightning protection device also comprises a preceding stage surge protector;

the external power supply, the preceding surge protector and a ground wire are connected in sequence, and lightning current isolated by the isolation and suppression unit is discharged through the ground wire.

Furthermore, the output end of the preceding stage surge protector is also connected with the input end of the following stage surge protector;

and the first voltage value output by the front-stage surge protector is subjected to voltage suppression processing by the rear-stage surge protector to output a second voltage value.

Further, the isolation suppressing unit includes an unsaturated inductor;

the unsaturated inductor core material is a composite magnetic core consisting of amorphous, nano-crystalline and silicon steel.

Further, when the first frequency value is the working frequency, the first impedance value is less than 1 ohm;

when the first frequency value is the lightning frequency, the first impedance value is greater than 1000 ohms.

Further, the ground wire is a lightning protection PE ground wire.

The isolation lightning protection device of the utility model, the isolation suppression unit outputs impedance according to the circuit frequency to protect the load equipment, the energy matching problem before the front-stage and back-stage surge protectors and the decoupler can be ignored, the front-stage surge protector can be freely selected, and the lightning protection effect is not influenced; the volume and the weight are greatly reduced, the installation is convenient and flexible, and the installation cost and the labor cost are greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of an isolation lightning protection device according to an embodiment of the present invention.

Fig. 2 is an external structural schematic view of an isolation lightning protection device according to an embodiment of the present invention.

Fig. 3 is a schematic view of an external structure of an isolation lightning protection device according to an embodiment of the present invention.

1. An isolation suppressing unit; 2. isolating the lightning protection unit; 3. a rear-stage surge protector; 4. a preceding stage surge protector; 5. a load device.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is also changed accordingly, and the connection may be a direct connection or an indirect connection.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, in an embodiment of the present invention, an isolation lightning protection device is provided, including an isolation suppressing unit 1 and a rear-stage surge protector 3, where the isolation suppressing unit 1 outputs a first impedance value according to a first frequency value in a circuit; the rear-stage surge protector 3 is connected with the output end of the isolation suppression unit 1 to form an isolation lightning protection unit 2, and is connected with load equipment 5 to discharge lightning current and reduce circuit voltage.

In this embodiment, the isolation and suppression unit 1 mainly functions to present a high impedance when a lightning surge flows through so as to achieve the purpose of isolating and suppressing a lightning current, and present a low impedance when a power frequency current flows through so as not to cause loss to the power frequency current. The rear-stage surge protector 3 limits the residual voltage to an extremely low range to protect the load device 5. In this embodiment, the isolation suppressing unit 1 is connected in series to a power supply line, and the post-surge protector 3 is connected in parallel to an output terminal of the isolation suppressing unit 1; the isolation lightning protection unit 2 is formed by integrating the isolation suppressing unit 1 and the rear-stage surge protector 3 in the same circuit integrated printed board by means of an integrated circuit, so that the volume and the weight are greatly reduced.

In this embodiment, an external power source, the isolation suppressing unit 1, and the load device 5 are connected in sequence to form an operating circuit.

In this embodiment, during normal power supply, the isolation suppressing unit 1 outputs a low impedance of several milliohms according to the power frequency current, which does not affect the power frequency power supply, and the external power supply, the isolation suppressing unit 1, and the load device 5 sequentially form a working loop.

In this embodiment, the isolation lightning protection device further includes a preceding surge protector 4; the external power supply, the preceding surge protector 4, and a ground line are connected in this order, and the lightning current isolated by the isolation and suppression unit 1 is discharged through the ground line. The ground wire is a lightning protection PE ground wire.

In this embodiment, the output terminal of the preceding surge protector 4 is further connected to the input terminal of the following surge protector 3; the first voltage value output from the preceding surge protector 4 is subjected to voltage suppression processing by the following surge protector 3 to output a second voltage value.

In the present embodiment, the isolation suppressing unit 1 includes an unsaturated inductor; the unsaturated inductor core material is a composite magnetic core consisting of amorphous, nano-crystalline and silicon steel.

In this embodiment, the core component of the isolation suppressing unit 1 is composed of a specially-made unsaturated inductor, and the magnetic core is a composite magnetic core composed of amorphous, nanocrystalline, silicon steel, etc. and has a good high impedance characteristic at the lightning frequency and a good low impedance characteristic at the power frequency current.

In this embodiment, when the first frequency value is the operating frequency, the first impedance value is less than 1 ohm; when the first frequency value is the lightning frequency, the first impedance value is greater than 1000 ohms.

In this embodiment, when a lightning surge occurs, the isolation and suppression unit 1 is in a high impedance kilohm level, which is different from a common decoupling in that the impedance of the passing lightning current is much higher than that of a common decoupler, so that the voltage at the port of the preceding stage surge protector 4 is instantly raised to several kilovolts to cause the preceding stage surge protector 4 to be turned on to discharge most of the lightning current through the lightning protection PE ground wire; the rear stage surge protector 3 outputs a second voltage value within an extremely low range in order to reduce the circuit voltage in order to protect the load device 5, in addition to the first voltage value output from the front stage surge protector 4.

Referring to fig. 2, in this embodiment, the appearance of the isolation lightning protection device may adopt a screw installation manner according to actual installation requirements. The screw mounting mode is convenient and simple, the fixation is convenient, and the applicability is strong.

In this embodiment, a lightning current isolation blocking plus bleeding technique is adopted; the lightning current can be effectively isolated and blocked; through the isolation lightning protection unit 2 composed of the isolation suppression unit 1 and the rear-stage surge protector 3, more than 95% of lightning current can be discharged to the ground through the front-stage surge protector 4 according to the actual requirements of users at the input end in cooperation with the corresponding front-stage surge protector 4, and the rear-stage surge protector 3 integrated inside the isolation lightning protection unit 2 can limit the residual voltage of the front-stage surge protector 4 in an extremely low range, so that the aim of isolating and blocking the lightning current is fulfilled. The preceding surge protector 4 can be freely combined according to the actual electromagnetic environment of a user, and the energy coordination of the preceding and following stages is not considered. The preceding stage surge protector 4 is removed, so that the volume and the weight are greatly reduced, and meanwhile, the device can be freely combined with the preceding stage of a user, the type selection is more free, and the installation is more convenient and easier.

Referring to fig. 3, in another embodiment, the appearance of the isolation lightning protection device may adopt a rail type installation manner according to actual installation needs. The guide rail type installation is that the existing open die in the market is selected, the price is low, the customer can freely select, and the universality is strong.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (7)

1. An isolation lightning protection device is characterized by comprising an isolation suppression unit and a post-stage surge protector,

the isolation suppression unit outputs a first impedance value according to a first frequency value in the circuit;

the rear-stage surge protector is connected with the output end of the isolation suppression unit to form an isolation lightning protection unit, and is connected with load equipment to discharge lightning current and reduce circuit voltage.

2. The isolated lightning protection device according to claim 1, further comprising an operating circuit formed by connecting an external power source, the isolation suppressing unit and a load device in sequence.

3. The isolated lightning protection device of claim 2,

the isolation lightning protection device also comprises a preceding surge protector;

the external power supply, the preceding surge protector and the ground wire are sequentially connected, and lightning stroke current isolated by the isolation and suppression unit is discharged through the ground wire.

4. The isolated lightning protection device of claim 3,

the output end of the front stage surge protector is also connected with the input end of the rear stage surge protector;

and the first voltage value output by the front-stage surge protector is subjected to suppression processing by the rear-stage surge protector to output a second voltage value.

5. The isolated lightning protection device of claim 1,

the isolation suppression unit comprises an unsaturated inductor;

the unsaturated inductor magnetic core material is a composite magnetic core consisting of amorphous, nano-crystalline and silicon steel.

6. The isolated lightning protection device of claim 2,

when the first frequency value is the working frequency, the first impedance value is less than 1 ohm;

when the first frequency value is the lightning frequency, the first impedance value is greater than 1000 ohms.

7. The isolated lightning protection device of claim 3,

the ground wire is a lightning protection PE ground wire.

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