Power frequency cutter

Abstract

The utility model discloses a power frequency cutter which comprises a discharging ball, an insulating shell sleeved outside the discharging ball, a hollow structure arranged inside the discharging ball, a supporting column arranged inside the hollow structure, a second gap ball arranged inside the bottom of the discharging ball, a heating resistor arranged at the top end of the second gap ball, and a nail shooting pill arranged at the top of the heating resistor. According to the utility model, the cutter is connected in series in the gap of the voltage limiter, when a power frequency current generated by a fault of a voltage limiter body flows through the cutter, the heating resistor generates heat, and the power frequency current flows through the cutter, so that the power frequency current is cut off; when the voltage limiter is in use, the nail shooting pill is detonated, the product rotates along the hinge piece, the second gap ball is exposed, the gap of the voltage limiter is lengthened, the arc extinguishing effect is achieved, in addition, the distance of the lengthened gap can meet normal operation of an electric power circuit, continuous thunder and lightning energy can be discharged, and safe operation of the electric power circuit can be continuously guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of power safety guarantee, in particular to a power frequency cutter. Background Art

[0002] When a voltage limiter body fails, the stability of its internal structure will be seriously affected, especially in a working environment with high voltage and large current. At this time, the gap inside the voltage limiter may generate power frequency arc due to too high electric field intensity. Once this kind of arc appears, due to its high temperature and high energy characteristics, it will not only cause further damage to the voltage limiter itself, but also pose a serious threat to the surrounding power lines and equipment.

[0003] More specifically, after the power frequency arc is generated between the gaps, due to its high resistance and instability, it is often not easy to be extinguished. This will cause the arc to persist, further exacerbating the damage degree of the voltage limiter. At the same time, the high heat and electromagnetic radiation generated by the arc will also interfere with the surrounding power lines, causing abnormal fluctuations in the voltage and current on the lines. When this kind of fluctuation exceeds the bearing range of the line, it will trigger the protection mechanism of the line, resulting in the tripping of the power line.

[0004] The tripping of the power line will not only affect the normal operation of the power system, but also cause serious consequences such as power outage. Especially in some key fields and facilities, such as hospitals, transportation hubs, etc., the tripping of the power line may pose a serious threat to people's life and property safety.

[0005] Therefore, when the voltage limiter body fails, measures must be taken in time to prevent the generation and persistence of the power frequency arc. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a power frequency cutter to solve the problem that power frequency arc is easily generated when the voltage limiter body fails.

[0007] The power frequency cutter includes a discharge ball, an insulating shell is sleeved outside the discharge ball, the inside of the discharge ball is a hollow structure, a support column is arranged inside the hollow structure, a second gap ball is arranged inside the bottom of the discharge ball, a heating resistor is arranged at the top of the second gap ball, a nail shooting bullet is arranged at the top of the heating resistor, an inductance coil is arranged at the top of the nail shooting bullet, an outer sleeve is arranged outside the insulating shell, a base is arranged at the bottom of the second gap ball, and a mounting base is arranged at the bottom of the base.

[0008] Further, the base of the second gap ball is a columnar structure, and a semi-circular cap is arranged at the top of the structure.

[0009] Further, it also includes that hinge ears are arranged on the outer side of the mounting base, hinge ears are arranged on the outer side of the outer sleeve, and the hinge ears of the mounting base and the hinge ears of the outer sleeve are connected by a hinge plate.

[0010] Further, it also includes that a screw hole is opened at the center of the mounting base, and the screw hole allows the base of the second clearance ball to pass through.

[0011] Further, it also includes that ear holes are arranged on the hinge ears of the mounting base, and pins are arranged on the hinge ears of the outer sleeve.

[0012] Further, the insulating housing is a conical barrel-shaped housing with a smooth and narrowing top.

[0013] Further, inner clearances are reserved in advance on both sides of the second clearance ball.

[0014] The beneficial effects of the present utility model: By connecting the cutter in series in the gap of the voltage limiter, when the power frequency current generated by the failure of the voltage limiter body flows through the present application, the heating resistor generates heat, detonates the nail gun cartridge, causes the product of the present utility model to rotate along the hinge plate, exposes the second clearance ball, elongates the voltage limiter gap, and plays an arc extinguishing role. In addition, the distance of the elongated gap can meet the normal operation of the power line, without having to immediately cut off the power for maintenance, and can discharge the continuously occurring lightning energy, continuously ensuring the safe operation of the power line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the power frequency cutter;

[0016] Figure 2 is a schematic sectional view of the power frequency cutter structure;

[0017] Figure 3 is a schematic structural diagram of the mounting base of the power frequency cutter;

[0018] Figure 4 is a schematic structural diagram of the outer sleeve of the power frequency cutter.

[0019] In the figure: 1 - discharge ball, 2 - support column, 3 - heating resistor, 4 - second clearance ball, 5 - insulating housing, 6 - base, 7 - mounting base, 8 - hinge plate, 9 - outer sleeve, 10 - nail gun cartridge, 11 - inductance coil, 12 - screw hole, 13 - hinge ear of mounting base, 14 - ear hole, 15 - hinge ear of outer sleeve, 16 - screw rod, 17 - inner clearance, 18 - pin, 19 - bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model will be introduced in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this implementation manner. On the contrary, the purpose of introducing the utility model in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model pertains. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The terms such as "disposed", "connected", "coupled" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations. The orientation or positional relationship indicated by "upper", "lower", "left", "right", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] To make the purpose, technical solutions and advantages of the present utility model clearer, the implementation manners of the present utility model will be further described in detail below with reference to the drawings.

[0023] In this embodiment, as shown in the attached Figures 1-4As shown in the figure, the power frequency cut-off device includes a discharge sphere 1, an insulating housing 5 is sleeved outside the discharge sphere 1, the inside of the discharge sphere 1 is a hollow structure, a support column 2 is arranged inside the hollow structure, a second gap sphere 4 is arranged inside the bottom of the discharge sphere 1, a heating resistor 3 is arranged at the top of the second gap sphere 4, a nail gun cartridge 10 is arranged at the top of the heating resistor 3, an inductance coil 11 is arranged at the top of the nail gun cartridge 10, an outer sleeve 9 is arranged outside the insulating housing 5, a base 6 is arranged at the bottom of the second gap sphere 4, and a mounting base 7 is arranged at the bottom of the base 6.

[0024] Further, the base of the second gap sphere 4 is a columnar structure, and a semi-circular cap is arranged at the top of the structure.

[0025] Further, it also includes a mounting base hinge ear 13 arranged outside the mounting base 7, an outer sleeve hinge ear 15 arranged outside the outer sleeve 9, and the mounting base hinge ear 13 and the outer sleeve hinge ear 15 are connected by a hinge plate 8. When the nail gun cartridge 10 explodes and ejects, causing the insulating housing 5 to separate from the base 7, the insulating housing 5 can rotate along the hinge plate 8 to prevent it from falling off and hitting other objects.

[0026] Further, it also includes a screw hole 12 opened at the center of the mounting base 7, and the screw hole 12 allows the base of the second gap sphere 4 to pass through.

[0027] Further, it also includes an ear hole 14 arranged on the mounting base hinge ear 13 and a pin 18 arranged on the outer sleeve hinge ear 15.

[0028] Further, the insulating housing 5 is a conical barrel-shaped housing with a smooth and shrinking top.

[0029] Further, inner gaps 17 are reserved in advance on both sides of the second gap sphere 4.

[0030] The specific working principle of this application is as follows:

[0031] The lightning current flows into the interior of this application through the discharge sphere 1, and the current passes through the inductance coil 11 in sequence to cut the peak and continue the current, the nail gun cartridge 10, the second gap sphere 4, the screw 16, and the base 7, and then discharges the current through the base 7. Since the power frequency arc duration is longer than the lightning strike discharge time, the heating resistor 3 generates heat, detonating the nail gun cartridge 10. The nail gun cartridge 10 explodes and ejects, causing the insulating housing 5 to separate from the base 7, and the insulating housing 5 rotates along the hinge plate 8, exposing the second gap sphere 4.

[0032] Advantages of the present utility model: By connecting the cutter in series with the gap of the voltage limiter, when the power frequency current generated by the failure of the voltage limiter body flows through the present application, the heating resistor 3 generates heat, detonates the nail gun cartridge 10, causes the product of the present utility model to rotate along the hinge piece 8, exposes the second gap ball 4, elongates the voltage limiter gap, and plays an arc extinguishing role. In addition, the distance of the elongated gap can meet the normal operation of the power line, without the need for immediate power outage for maintenance, and can discharge the continuous lightning energy, continuously ensuring the safe operation of the power line.

[0033] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. Power frequency cut-off device, characterized in that, It includes a discharge ball (1), an insulating housing (5) is sleeved outside the discharge ball (1), the inside of the discharge ball (1) is a hollow structure, a support column (2) is arranged inside the hollow structure, a second gap ball (4) is arranged inside the bottom of the discharge ball (1), a heating resistor (3) is arranged at the top of the second gap ball (4), a nail shooting bullet (10) is arranged at the top of the heating resistor (3), an inductor coil (11) is arranged at the top of the nail shooting bullet (10), an outer sleeve (9) is arranged outside the insulating housing (5), a base (6) is arranged at the bottom of the second gap ball (4), and a mounting base (7) is arranged at the bottom of the base (6).

2. The power frequency cut-off device according to claim 1, wherein The base of the second gap ball (4) is a columnar structure, and a semi-circular cap is arranged at the top of the structure.

3. The power frequency cut-off device according to claim 1, characterized in that, It also includes a mounting base hinge ear (13) arranged outside the mounting base (7), an outer sleeve hinge ear (15) arranged outside the outer sleeve (9), and the mounting base hinge ear (13) and the outer sleeve hinge ear (15) are connected by a hinge piece (8).

4. The power frequency cutter according to claim 3, characterized in that, It also includes a screw hole (12) opened at the center of the mounting base (7), and the screw hole (12) allows the base of the second gap ball (4) to pass through.

5. The power frequency cut-off device according to claim 3, characterized in that, It also includes an ear hole (14) arranged on the mounting base hinge ear (13) and a pin (18) arranged on the outer sleeve hinge ear (15).

6. The power frequency cut-off device according to claim 1, characterized in that, The insulating housing (5) is a conical barrel-shaped housing with a smooth and shrinking top.

7. The power frequency cut-off device according to claim 1, characterized in that, It also includes inner gaps (17) reserved in advance on both sides of the second gap ball (4).

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