Safety circuit breaker

Abstract

The utility model relates to the field of circuit breakers, in particular to a safety circuit breaker. Comprising a circuit breaker shell; the pivotal shaft is rotationally arranged on the front end surface of the circuit breaker shell; the energy storage device is arranged on the circuit breaker shell and is linked with the pivotal shaft; the contact mechanism is matched with the pivot shaft; the auxiliary switch is arranged on the circuit breaker shell and is matched with the contact mechanism; according to the utility model, through arranging the energy storage device, the molded case circuit breaker can be rapidly switched on.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a safety circuit breaker. Background Art

[0002] A circuit breaker is a mechanical switching device that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions.

[0003] There is an old type of molded case circuit breaker currently available, which does not have an energy storage device, and its opening and closing speeds are not fast enough and are time-consuming and labor-intensive.

[0004] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a molded case circuit breaker with fast closing function in view of the above-mentioned technical problems.

[0006] In view of this, the utility model provides a safety circuit breaker, characterized by comprising:

[0007] Circuit breaker housing;

[0008] A pivot shaft, the pivot shaft being rotatably disposed on a front end surface of the circuit breaker housing;

[0009] An energy storage device, which is mounted on the circuit breaker housing and is linked to the pivot shaft;

[0010] A contact mechanism, the contact mechanism cooperates with the pivot shaft;

[0011] Auxiliary switch: the auxiliary switch is arranged on the circuit breaker housing and cooperates with the contact mechanism.

[0012] Furthermore, a reserved space is provided above the energy storage device, and a plurality of reserved mounting holes for mounting shunt releasers are provided on the upper end surface of the energy storage device.

[0013] Furthermore, it also includes:

[0014] Intelligent controller,Intelligent controller is used to control and protect the power distribution network.

[0015] Furthermore, it also includes:

[0016] The motor is arranged on the circuit breaker housing and is used to adjust the energy storage device to an energy storage state.

[0017] Furthermore, it also includes:

[0018] A manual energy storage wrench is arranged on the energy storage device and is used to adjust the energy storage device to an energy storage state.

[0019] Furthermore, the auxiliary switch is provided with a plurality of auxiliary contacts.

[0020] Furthermore, it also includes: a closing electromagnet, which is arranged in a reserved space above the energy storage device and is arranged in coordination with the energy storage device.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model provides an energy storage device so that the molded case circuit breaker can be quickly closed.

[0023] 2. The utility model can add a shunt release to the reserved installation hole, and two shunt releases can be installed. When one of the shunt releases fails, one shunt release can be used as an emergency measure.

[0024] 2. The closing electromagnet provided in the utility model cooperates with the external circuit to prevent the circuit breaker from being mistakenly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of another direction of the utility model;

[0027] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of area A in .

[0030] The symbols in the figure are:

[0031] 1. Circuit breaker housing; 2. Limiting ring; 3. Pivot shaft; 4. Energy storage device; 5. Contact mechanism; 6. Reserved installation hole; 7. Intelligent controller; 8. Motor; 9. Manual energy storage wrench; 10. Arc extinguishing chamber; 11. Arc extinguishing cover; 12. Main contact; 13. Base; 14. Reserved hole; 15. Reserved space. Specific embodiments

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] Embodiment 1:

[0034] This embodiment provides a safety circuit breaker, characterized by comprising:

[0035] Circuit breaker housing 1;

[0036] A pivot shaft 3, the pivot shaft 3 is rotatably arranged on the front end surface of the circuit breaker housing 1;

[0037] An energy storage device 4, which is mounted on the circuit breaker housing 1 and is linked to the pivot shaft 3;

[0038] A contact mechanism 5, the contact mechanism 5 cooperates with the pivot shaft 3;

[0039] Auxiliary switch: the auxiliary switch is arranged on the circuit breaker housing 1 and cooperates with the contact mechanism 5.

[0040] The circuit breaker housing 1 is a square structure, and the front end surface of the circuit breaker housing 1 is a mounting surface. The energy storage device 4 is a prior art. The energy storage device 4 can stretch the closing or opening spring to make it have corresponding potential energy. The energy storage spring is connected to the closing or opening mechanism. When closing or opening, the closing or opening electromagnet is actuated, and after the switch is pulled (pressing the corresponding button), the closing or opening spring quickly closes or separates the moving contact of the circuit breaker. Its main purpose is to reduce the arc existence time of closing or opening (fast closing) to achieve the purpose of rapid arc extinguishing. The energy storage of some circuit breakers can be carried out manually or electrically.

[0041] The energy storage device adopts a five-link structure in the energy storage structure of the frame circuit breaker.

[0042] The pivot shaft 3 is a linkage mechanism used to move the contact mechanism 5 and the energy storage device toward the middle of the fit.

[0043] The limiting ring 2 is a semicircular structure, and the two ends of the limiting ring 2 are plate-shaped. Bolts penetrate the plate-shaped structure. The pivot shaft 3 is first installed in all the limiting rings 2 and then fixed on the circuit breaker housing 1.

[0044] The auxiliary switch is a part of the main switch. The specific structure of the auxiliary switch is not shown in the figure. The figure provides a base 13 for mounting the auxiliary switch. It is usually composed of a control circuit, a contact system and an operating mechanism. When the circuit breaker is in normal working state, the auxiliary switch transmits corresponding signals through the closing or opening of the contacts to realize the control and monitoring of the circuit breaker.

[0045] The contact system of the auxiliary switch is usually composed of normally closed contacts and normally open contacts. When the circuit breaker is in the closed state, the normally closed contacts are closed and the normally open contacts are open; when the circuit breaker is in the open state, the normally open contacts are closed and the normally closed contacts are open. By monitoring the status of these two sets of contacts, the opening and closing status of the circuit breaker can be obtained.

[0046] The control circuit of the auxiliary switch is responsible for receiving the status signal of the contact and then transmitting the signal to the control system to realize the control and monitoring of the circuit breaker.

[0047] A reserved space 15 is provided above the energy storage device 4 , and a plurality of reserved mounting holes 6 for mounting shunt releasers are provided on the upper end surface of the energy storage device 4 .

[0048] A reserved hole 14 for installing a closing electromagnet is provided at a front position on the upper surface of the energy storage device 4 .

[0049] Two reserved mounting holes 6 for mounting shunt releases are provided at the rear side of the upper surface of the energy storage device 4. The installation of shunt releases can improve the safety of the equipment. By providing a shunt release, it is actually a tripping coil. Applying a specified voltage or current to the shunt release can trip the circuit breaker. With the shunt release, remote tripping control can be achieved through a certain control loop. By providing the reserved mounting holes 6 and the reserved space 15, a shunt release can be added to the reserved mounting holes 6, and two can be installed. When one of the shunt releases fails, a shunt release can be used as an emergency measure.

[0050] The closing electromagnet and the shunt release not shown in the figure are prior art.

[0051] Embodiment 2:

[0052] This embodiment provides a safety circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] Also includes:

[0054] The intelligent controller 7 is used to control and protect the power distribution network.

[0055] The intelligent controller 7 is composed of three basic modules: data acquisition, intelligent identification and adjustment device. The intelligent identification module is the core of the intelligent control unit. The microcomputer control system composed of a microprocessor can automatically identify the state of the electrical equipment under the control of the circuit breaker according to the grid information collected before the operation and the operation signal sent by the main control room, protect the normal operation of the electrical equipment, determine the appropriate opening and closing movement characteristics according to the results of the circuit breaker simulation analysis, and send adjustment information to the actuator, and send the opening and closing signal after the adjustment is completed; the data acquisition module is mainly composed of new sensors, which provide the data of the electrical equipment in the form of digital signals to the intelligent identification module at any time for processing and analysis; the actuator is composed of components that can receive quantitative control information and drive actuators, which are used to adjust the parameters of the operating mechanism so as to change the movement characteristics during each operation. In addition, display modules, communication modules and various detection modules can be added as needed to expand the intelligent functions of the intelligent operation circuit breaker; the circuit breaker can be diagnosed and maintained, such as detecting the wear of the contacts and measuring the current size.

[0056] Embodiment 3:

[0057] This embodiment provides a safety circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] Also includes:

[0059] The motor 8 is arranged on the circuit breaker housing 1 and is used to adjust the energy storage device 4 to an energy storage state.

[0060] The output end of the motor 8 is connected to the energy storage shaft of the energy storage device 4 through a coupling, and the motor 8 is used to drive the shaft of the energy storage device 4 to rotate and store energy without manual operation, thereby realizing automatic energy storage of the energy storage device 4, and the motor 8 can be controlled by the intelligent controller 7, and the motor 8 is powered by an external power supply.

[0061] Also includes:

[0062] A manual energy storage wrench 9 is provided on the energy storage device 4 and is used to adjust the energy storage device 4 to an energy storage state.

[0063] By providing a manual energy storage wrench 9 connected to the energy storage shaft of the energy storage device 4, the shaft can be rotated manually to store energy, and when the motor 8 is damaged, the manual energy storage wrench 9 can be used as an emergency measure.

[0064] The contact mechanism 5 is arranged behind the intelligent control device and comprises a main contact 12 . The main contact 12 is arranged inside the intelligent control device.

[0065] It also includes: an arc extinguishing chamber 10, which is arranged on the upper end surface of the circuit breaker housing 1. The arc extinguishing chamber 10 includes a housing, grids and an arc extinguishing cover 11. A plurality of grids are arrayed inside a housing, and the arc extinguishing cover 11 is arranged on the top of the arc extinguishing chamber 10. When a strong current is disconnected, a large amount of high-temperature and high-pressure ionized gas will be generated along with the arc burning. These gases are quickly cooled, compounded, and deionized inside the arc extinguishing chamber 10 of the phase and are discharged from the arc extinguishing chamber 10 in time to prevent leakage through the surrounding gaps to the adjacent phase or contact with the grounded metal outside the circuit breaker, otherwise it will cause phase-to-phase and ground short-circuit faults, the arc cannot be extinguished, and the disconnection failure occurs.

[0066] The auxiliary switch is provided with a plurality of auxiliary contacts.

[0067] The auxiliary switch is provided with a plurality of auxiliary contacts, that is, a plurality of contact points, which are connected to different positions on the circuit according to different functions.

[0068] It also includes: a closing electromagnet, which is arranged in the reserved space 15 above the energy storage device 4 and is arranged in coordination with the energy storage device 4.

[0069] The closing electromagnet cooperates with the external circuit to prevent the circuit breaker from being connected by mistake. The closed normally open auxiliary point is connected in series to the circuit of the circuit breaker, and the circuit is not turned on before the closure becomes electrical. The piston rod of the circuit breaker lock electromagnet is installed next to the connection shaft. When it is not started, the piston rod will lock the connection mechanism to prevent the circuit breaker from being manually connected.

[0070] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which belong to the protection scope of the present application.

Claims

1. A safety circuit breaker, characterized in that: include: Circuit breaker housing (1); A pivot shaft (3), the pivot shaft (3) being rotatably arranged on the front end surface of the circuit breaker housing (1); An energy storage device (4), the energy storage device (4) is mounted on the circuit breaker housing (1) and is linked to the pivot shaft (3); A contact mechanism (5), the contact mechanism (5) cooperates with the pivot shaft (3); An auxiliary switch, the auxiliary switch being arranged on the circuit breaker housing (1) and cooperating with the contact mechanism (5); A reserved space (15) is provided above the energy storage device (4), and a plurality of reserved mounting holes (6) for mounting shunt releasers are provided on the upper end surface of the energy storage device (4); An intelligent controller (7), the intelligent controller (7) is used to control and protect the power distribution network; The electric motor (8) is arranged on the circuit breaker housing (1) and is used to adjust the energy storage device (4) to an energy storage state.

2. A safety circuit breaker according to claim 1, characterized in that: Also includes: A manual energy storage wrench (9) is arranged on the energy storage device (4) and is used to adjust the energy storage device (4) to an energy storage state.

3. A safety circuit breaker according to claim 1, characterized in that: The auxiliary switch is provided with a plurality of auxiliary contacts.

4. A safety circuit breaker according to claim 1, characterized in that: Also includes: A closing electromagnet is arranged in a reserved space (15) above the energy storage device (4) and is arranged in coordination with the energy storage device (4).

5. A safety circuit breaker according to claim 1, characterized in that: Also includes: The arc extinguishing chamber (10) is arranged on the upper end surface of the circuit breaker housing (1).

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