CN204517397U - A kind of Novel Lightning circuit breaker - Google Patents

Abstract

The utility model discloses a novel lightning circuit breaker. The novel lightning circuit breaker includes a gap discharge module, an inductance module, and a circuit breaker module. The inductance module is connected in series with the circuit breaker module, and the inductance module and the circuit breaker module are connected in parallel with the gap discharge module to form a novel lightning circuit breaker. The gap discharge module, inductance module, and circuit breaker module of the new lightning circuit breaker are packaged in the shell of the new lightning circuit breaker, and the shell of the new lightning circuit breaker is the same size as the ordinary circuit breaker of the same type. The lightning circuit breaker can realize the safe discharge of lightning current when a lightning strike occurs, and quickly disconnect when the power frequency current discharge value exceeds the rated current value, so as to ensure the safe operation of the equipment.

Description

A New Lightning Circuit Breaker

technical field

The utility model relates to a lightning circuit breaker for a storage tank with a floating roof, in particular to a novel lightning circuit breaker.

Background technique

The voltage-limiting surge protector is a thermal breakdown product that is prone to aging. Frequent lightning and overvoltage can cause the internal power frequency leakage current to gradually increase, and eventually thermal breakdown occurs. In order to reduce the above-mentioned failures of the voltage-limiting surge protector, the industry standard requires that a circuit breaker be connected in series with the voltage-limiting surge protector to prevent and reduce the occurrence of illegal power-off accidents caused by damage to the surge protector.

Since the industry standard does not clearly specify and standardize the technical category and parameters of the circuit breaker connected in series with the surge protector, there are currently two types of circuit breaker connected in series with the surge protector: miniature circuit breakers and fuses. In actual operation, many problems have arisen. The circuit breaker connected in series on the surge protector is broken because it cannot withstand the lightning impact, causing the surge protector to fail, or when a circuit breaker with a large flow rate is selected, it cannot be disconnected under power frequency current, causing the surge protector to generate heat. Breakdown, and even cause a fire accident. A reliable lightning circuit breaker is currently lacking.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a novel lightning circuit breaker. The lightning circuit breaker can realize the safe discharge of lightning current when a lightning strike occurs, and quickly disconnect when the power frequency current discharge value exceeds the rated current value, so as to ensure the safe operation of the equipment.

The utility model adopts the following technical solutions:

A novel lightning circuit breaker, comprising a gap discharge module, an inductance module, and a circuit breaker module, the inductance module is connected in series with the circuit breaker module, and the inductance module and the circuit breaker module are connected in parallel with the gap discharge module to form a novel lightning circuit breaker;

The gap discharge module, inductance module, and circuit breaker module of the new lightning circuit breaker are packaged in the shell of the new lightning circuit breaker, and the shell of the new lightning circuit breaker is the same size as the ordinary circuit breaker of the same type.

The utility model is a novel lightning circuit breaker. The gap discharge module includes a discharge gap with a very small gap to ensure that the lightning current passes through the gap discharge module.

The utility model is a novel lightning circuit breaker, the discharge gap is 2mm-25mm.

The utility model discloses a novel lightning circuit breaker, the circuit breaker module includes an overrun circuit breaker, the circuit breaker passes the power frequency current smaller than the rated current value, and the circuit breaker blocks the power frequency current greater than the rated current value.

The utility model discloses a novel lightning circuit breaker. A surge protector is connected in series at both ends of the novel lightning circuit breaker. The surge protector includes a discharge gap, an air-filled discharge tube, a piezoresistor, a suppression diode and a choke coil.

The utility model adopts the beneficial technical effects obtained by the above technical scheme:

A new type of lightning circuit breaker, including a gap discharge module, an inductance module, and a circuit breaker module. The inductance module is connected in series with the circuit breaker module and then connected in parallel with the gap discharge module to form a new type of lightning circuit breaker, which realizes lightning discharge and power frequency current discharge. quick switching.

Description of drawings

Figure 1 is a schematic diagram of the wiring of the new lightning circuit breaker.

Detailed ways

The specific embodiment of the utility model is further described in conjunction with accompanying drawing 1:

A novel lightning circuit breaker includes a gap discharge module, an inductance module 2, and a circuit breaker module 3. The inductance module 2 and the circuit breaker module 3 are connected in series with wires, and the inductance module 2 and the circuit breaker module 3 are connected in parallel with the gap discharge module to form a new lightning circuit breaker. The new lightning circuit breaker realizes the combination of lightning current discharge and power frequency current discharge Quick switch. The gap discharge module, inductance module, and circuit breaker module of the new lightning circuit breaker are packaged in the shell of the new lightning circuit breaker, and the shell of the new lightning circuit breaker is the same size as the shell of the ordinary circuit breaker of the same type. The housing of the new lightning circuit breaker is equipped with an air trip switch, which responds to the circuit breaker.

The gap discharge module includes a discharge gap 1 with a very small gap, the discharge gap is 2mm-25mm, which ensures that the lightning current passes through and discharges from the gap discharge module. When struck by lightning, the protection gap is firstly broken down due to overvoltage, and a large amount of lightning current is discharged, so that the overvoltage is greatly reduced, thereby protecting the circuit and electrical equipment.

The circuit breaker module 3 includes an overrun circuit breaker, the circuit breaker passes the power frequency current smaller than the rated current value, and the circuit breaker blocks the power frequency current greater than the rated current value. When the power frequency leakage current exceeds the rated current value, the circuit breaker will be disconnected immediately to ensure the safety of the equipment and realize the protection function of ordinary circuit breakers.

The inductance module 2 can pass current when there is a power frequency current, but the inductive reactance is very large when lightning strikes, and the lightning current cannot pass smoothly, so that the lightning current passes through the gap discharge module 1 .

Both ends of the new lightning circuit breaker are connected in series with surge protectors to protect the new lightning circuit breaker. A surge protector consists of a discharge gap, a gas-filled discharge tube, a varistor, a suppression diode, and a choke coil. When the external interference suddenly produces a peak current or a peak voltage, the surge protector can turn on the shunt in a very short time, thereby preventing the peak current or peak voltage from causing damage to the equipment in the circuit.

The new lightning circuit breaker is the same size as the ordinary circuit breaker of the same model and can be used as a direct replacement.

The above-mentioned new lightning circuit breaker is a single-pole single-connected lightning circuit breaker, which is connected in series in the circuit to be protected. The above-mentioned new lightning circuit breaker is a double-pole single-connected lightning circuit breaker, which is respectively connected in series in different circuits to be protected. The above-mentioned new lightning circuit breaker is a three-pole single-connected lightning circuit breaker, which are respectively connected in series in the three-phase circuit to be protected.

Of course, the above description is only a preferred embodiment of the utility model, and the utility model is not limited to the above-mentioned embodiments. Equivalent substitutions and obvious deformation forms all fall within the essential scope of this specification and should be protected by the utility model.

Claims (5)

1. A novel lightning circuit breaker, characterized in that it comprises a gap discharge module, an inductance module, and a circuit breaker module, the inductance module is connected in series with the circuit breaker module, and the inductance module and the circuit breaker module are connected in parallel with the gap discharge module after being connected in series New lightning circuit breaker; The gap discharge module, inductance module, and circuit breaker module of the new lightning circuit breaker are packaged in the shell of the new lightning circuit breaker, and the shell of the new lightning circuit breaker is the same size as the ordinary circuit breaker of the same type. 2. A novel lightning circuit breaker according to claim 1, characterized in that the discharge gap module includes a discharge gap with a very small gap to ensure that the lightning current passes through the gap discharge module. 3. A novel lightning circuit breaker according to claim 2, characterized in that the discharge gap is 2mm-25mm. 4. A new type of lightning circuit breaker according to claim 1, characterized in that the circuit breaker module includes an overrun circuit breaker, the circuit breaker passes a power frequency current less than the rated current value, and the circuit breaker blocks the current greater than the rated current value of power frequency current. 5. A novel lightning circuit breaker according to claim 1, characterized in that a surge protector is connected in series at both ends of the novel lightning circuit breaker, and the surge protector includes a discharge gap, an air-filled discharge tube, a pressure sensitive resistors, suppression diodes, and choke coils.