CN217881364U

CN217881364U - Circuit breaker for protecting power system line

Info

Publication number: CN217881364U
Application number: CN202221503412.3U
Authority: CN
Inventors: 陈敏
Original assignee: Ceec Shaanxi Electric Power Design Institute
Current assignee: Ceec Shaanxi Electric Power Design Institute
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-22
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a circuit breaker for electric power system line protection belongs to circuit breaker technical field, including the circuit breaker, circuit breaker surface mounting has trip switch, the trip switch bottom is connected with alarm mechanism, alarm mechanism includes runner assembly, dust shell, alarm component, contact subassembly and reset assembly, the trip switch bottom is connected with contact subassembly through runner assembly, contact subassembly and reset assembly are all installed inside the dust shell, alarm component is installed to the dust shell bottom, alarm component includes battery compartment, buzzer siren, electric wire and dry battery, the utility model discloses alarm mechanism is installed to the trip switch bottom of circuit breaker for electric power system line protection, and when taking place serious transshipping or trouble automatic cutout circuit such as short circuit and under-voltage, trip switch trips downwards in the same time, triggers alarm mechanism, but buzzing early warning suggestion user, and the security performance is good.

Description

Circuit breaker for protecting power system line

Technical Field

The utility model relates to a circuit breaker field specifically is a circuit breaker for electric power system line protection.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. Have achieved wide application. The power distribution is an extremely important link in the generation, transmission and use of electricity. The distribution system comprises a transformer and various high-low voltage electrical equipment, and the low-voltage circuit breaker is an electrical appliance with a large use amount.

The existing circuit breaker for protecting the power system circuit can only automatically cut off the circuit when serious overload or short circuit, undervoltage and other faults occur, buzzing and early warning cannot be realized, a user cannot timely perceive the circuit breaker, and the safety is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker is used in electric power system circuit protection, the utility model discloses alarm device is installed to the trip switch bottom of circuit breaker is used in electric power system circuit protection, and when taking place serious transshipping or trouble automatic cutout circuit such as short circuit and under-voltage, trip switch trips downwards in the same time, triggers alarm device, but buzzing early warning suggestion user, and the security performance is good to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a circuit breaker for electric power system line protection, includes the circuit breaker, circuit breaker surface mounting has trip switch, the trip switch bottom is connected with alarm mechanism, alarm mechanism includes rotating assembly, dustproof shell, alarm assembly, contact subassembly and reset assembly, the trip switch bottom is connected with the contact subassembly through rotating assembly, contact subassembly and reset assembly are all installed inside dustproof shell, alarm assembly is installed to the dustproof shell bottom, alarm assembly includes battery compartment, buzzer siren, electric wire and dry battery, contact subassembly includes moving contact, slide bar, goes up static contact and lower static contact, slide bar sliding connection is on dustproof shell upper portion, the moving contact is installed to the slide bar bottom, the static contact is all installed at dustproof shell inside wall upper portion both ends, the static contact is all installed down at dustproof shell inside wall lower part both ends, the moving contact bottom is middle through reset assembly is connected with in the middle of dustproof shell inside wall bottom.

As a further aspect of the present invention: the rotating assembly comprises a connecting rod, a universal ball and a ball seat, the bottom of the tripping switch is connected with the universal ball through the connecting rod, the universal ball is rotatably installed on the inner side wall of the ball seat, and the ball seat is installed at the top of the sliding rod.

As a further aspect of the present invention: the dustproof shell comprises a rear shell, a cover plate and a bolt, wherein the cover plate is detachably connected to an opening in the front face of the rear shell through the bolt.

As a further aspect of the present invention: the reset assembly comprises a rectangular sheet and a spring, wherein the rectangular sheet is installed at the upper end and the lower end of the spring, and the rectangular sheet is connected with the middle of the bottom of the moving contact and the middle of the bottom of the inner side wall of the dustproof shell through the rectangular sheet respectively.

As a further aspect of the present invention: the lower static contact is connected with a dry battery and a buzzer alarm through electric wires.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses alarm mechanism is installed to trip switch bottom of circuit breaker for power system line protection, when taking place serious overload or fault automatic cutout circuit such as short circuit and under-voltage, trip switch trips downwards in the same time, dissolve the power of all the other directions through the runner assembly change, only decurrent power transmission gives the slide bar, slide bar pressurized gliding, the moving contact of its bottom also translates downwards along with it, reset assembly's spring pressurized shortens this moment, the moving contact truns into its bottom and lower static contact by its top and last static contact, make battery and buzzer siren form the route, trigger alarm mechanism, the dry battery power supply, buzzer siren can buzzing the warning voluntarily and indicate the unusual of user's circuit this moment, make the user in time come forward to handle, the security performance is good, after the circuit resumes normally, shift up trip switch makes it reset, spring resilience resets slide bar and moving contact translation upwards at this moment, make the moving contact leave the static contact, buzzer siren stops buzzing, solve current circuit breaker for power system line protection can only automatic cutout circuit when taking place serious overload or faults such as short circuit and under-voltage, can's unable buzzing, the early warning can's unable early warning, the problem that the security is often lower.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker for protecting a power system line according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural diagram of a circuit breaker for protecting a power system line according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic structural diagram at B in fig. 2.

In the figure: 1. a circuit breaker; 2. a trip switch; 3. an alarm mechanism; 301. a rotating assembly; 3011. a connecting rod; 3012. a universal ball; 3013. a ball seat; 302. a dust-proof housing; 3021. a rear housing; 3022. a cover plate; 3023. a bolt; 303. an alarm component; 3031. a battery compartment; 3032. a buzzer alarm; 3033. an electric wire; 3034. dry batteries; 304. a contact assembly; 3041. a moving contact; 3042. a slide bar; 3043. an upper static contact; 3044. a lower static contact; 305. a reset assembly; 3051. a rectangular sheet; 3052. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to fig. 1 to 4, in an embodiment of the present invention, a circuit breaker for protecting a power system circuit includes a circuit breaker 1, a trip switch 2 is installed on a surface of the circuit breaker 1, an alarm mechanism 3 is connected to a bottom of the trip switch 2, the alarm mechanism 3 includes a rotating component 301, a dust-proof housing 302, an alarm component 303, a contact component 304 and a reset component 305, the bottom of the trip switch 2 is connected to the contact component 304 through the rotating component 301, the contact component 304 and the reset component 305 are both installed inside the dust-proof housing 302, the alarm component 303 is installed at the bottom of the dust-proof housing 302, the alarm component 303 includes a battery compartment 3031, a buzzer alarm 3032, an electric wire 3033 and a dry battery 3034, the contact component 304 includes a moving contact 3041, a sliding rod 3042, an upper static contact 3043 and a lower static contact 3044, slide bar 3042 sliding connection is on dustproof shell 302 upper portion, moving contact 3041 is installed to slide bar 3042 bottom, and static contact 3043 is all installed at dustproof shell 302 inside wall upper portion both ends, and static contact 3044 is down all installed at dustproof shell 302 inside wall lower part both ends, is connected with in the middle of the dustproof shell 302 inside wall bottom through reset assembly 305 in the middle of the moving contact 3041 bottom, the utility model discloses alarm mechanism 3 is installed to trip switch 2 bottom of circuit breaker 1 for the electric power system circuit protection, when taking place serious overload or fault automatic cutout circuit such as short circuit and under-voltage, trip switch 2 trips downwards in the same time, triggers alarm mechanism 3, but buzzing early warning suggestion user, and the security performance is good.

The rotating assembly 301 comprises a connecting rod 3011, a universal ball 3012 and a ball seat 3013, the bottom of the trip switch 2 is connected with the universal ball 3012 through the connecting rod 3011, the universal ball 3012 is rotatably installed on the inner side wall of the ball seat 3013, the ball seat 3013 is installed on the top of the sliding rod 3042, when a circuit is automatically cut off due to serious overload or short circuit, undervoltage and other faults, the trip switch 2 trips downwards in the same time, the force in other directions is dissolved through the rotating assembly 301, only the downward force is transmitted to the sliding rod 3042, the sliding rod 3042 slides downwards under pressure, and the alarming mechanism 3 is triggered to buzz and alarm; the dustproof shell 302 comprises a rear shell 3021, a cover plate 3022 and a bolt 3023, the cover plate 3022 is detachably connected to an opening in the front of the rear shell 3021 through the bolt 3023, the dustproof effect is good, and the disassembly and the overhaul are convenient; the reset assembly 305 comprises a rectangular piece 3051 and a spring 3052, the upper end and the lower end of the spring 3052 are both provided with the rectangular piece 3051 and are respectively connected with the middle of the bottom of the moving contact 3041 and the middle of the bottom of the inner side wall of the dustproof shell 302 through the rectangular piece 3051, when the circuit is recovered to be normal, the trip switch 2 is moved upwards to reset, at the moment, the spring 3052 rebounds to reset the sliding rod 3042 and the moving contact 3041 to move upwards and horizontally, the moving contact 3041 is separated from the lower fixed contact 3044, and the buzzer 3032 stops buzzing; the lower static contact 3044 is connected with a dry battery 3034 and a buzzer 3032 through an electric wire 3033, when the moving contact 3041 is changed from the contact between the top of the moving contact 3043 and the upper static contact 3043 to the contact between the bottom of the moving contact 3044 and the lower static contact 3044, the battery and the buzzer 3032 form a passage to trigger the alarm mechanism 3, the dry battery 3034 supplies power, and the buzzer 3032 can automatically buzz and warn to prompt a user of the circuit abnormality at the moment.

The utility model discloses a theory of operation is: the utility model discloses alarm mechanism 3 is installed to trip switch 2 bottom of circuit breaker 1 for power system line protection, when taking place serious overload or fault automatic cutout circuit such as short circuit and under-voltage, trip switch 2 trips downwards in the same time, dissolve the power of other directions through rotating assembly 301, only downward power transmission gives slide bar 3042, slide bar 3042 is pressed and glides, moving contact 3041 of its bottom is also with it translation downwards, the spring 3052 pressurized of reset assembly 305 shortens this moment, moving contact 3041 changes into its bottom and lower static contact 3044 contact by its top and last static contact 3043 contact, make battery and buzzer alarm 3032 form the dry battery route, trigger alarm mechanism 3, 3034 supplies power, buzzer alarm 3032 can automatic buzzer warning suggestion user's circuit's the unusual this moment, make the user in time come forward to handle, the security performance is good, when the circuit resumes normally, move up with buzzer alarm 2 and make it reset, spring 3052 rebounds reset slide bar 3041 and moving contact 3041 translation upwards this moment, moving contact 3041 leaves lower static contact 3044, buzzer alarm 2 stops buzzer alarm 2 and current dry battery product (3034).

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a circuit breaker for power system line protection which characterized in that: the circuit breaker comprises a circuit breaker (1), a trip switch (2) is installed on the surface of the circuit breaker (1), an alarm mechanism (3) is connected to the bottom of the trip switch (2), the alarm mechanism (3) comprises a rotating component (301), a dustproof shell (302), an alarm component (303), a contact component (304) and a reset component (305), the bottom of the trip switch (2) is connected with the contact component (304) through the rotating component (301), the contact component (304) and the reset component (305) are installed inside the dustproof shell (302), the alarm component (303) is installed at the bottom of the dustproof shell (302), the alarm component (303) comprises a battery bin (3031), a buzzer alarm (3032), an electric wire (3033) and a dry battery (3034), the contact component (304) comprises a moving contact (3041), a fixed contact (3042), an upper fixed contact (3043) and a lower fixed contact (3044), the two ends (3042) of the sliding rod are connected to the upper portion of the dustproof shell (302), the moving contact component (302) is installed with the moving contact (3041), the inner side wall (3043), the middle inner side wall (3044) is connected with the lower side wall (3044), and the dustproof shell (3044) through the inner side wall (3041), and the inner side wall (3044) is connected with the middle portion of the dustproof shell (302), the lower side wall (3041) ) The middle of the bottom of the inner side wall.

2. The circuit breaker for protecting a line of an electric power system according to claim 1, wherein: the rotating assembly (301) comprises a connecting rod (3011), a universal ball (3012) and a ball seat (3013), the bottom of the tripping switch (2) is connected with the universal ball (3012) through the connecting rod (3011), the universal ball (3012) is rotatably installed on the inner side wall of the ball seat (3013), and the ball seat (3013) is installed on the top of a sliding rod (3042).

3. The circuit breaker for protecting a line of an electric power system according to claim 1, wherein: the dustproof shell (302) comprises a rear shell (3021), a cover plate (3022) and a bolt (3023), wherein the cover plate (3022) is detachably connected to the front opening of the rear shell (3021) through the bolt (3023).

4. The circuit breaker for protecting a line of an electric power system according to claim 1, wherein: the reset assembly (305) comprises a rectangular sheet (3051) and a spring (3052), wherein the rectangular sheet (3051) is arranged at the upper end and the lower end of the spring (3052) and is respectively connected with the middle of the bottom of the moving contact (3041) and the middle of the bottom of the inner side wall of the dustproof shell (302) through the rectangular sheet (3051).

5. The circuit breaker for protecting a line of an electric power system according to claim 1, wherein: the lower static contact (3044) is connected with a dry battery (3034) and a buzzer alarm (3032) through an electric wire (3033).