Quick-operation low-voltage switch for AI intelligent switch cabinet

Abstract

The utility model discloses a fast operation low-voltage switch used for an AI intelligent switch cabinet, which relates to the technical field of low-voltage switches and comprises a moving contact, a magnetic control shell is arranged on the moving contact, a magnetic control mechanism is arranged in the magnetic control shell, an opening handle used for rotating opening is arranged at the front end of the magnetic control shell, the magnetic control mechanism comprises a coil, and the coil is arranged in the magnetic control shell. The magnetic control operating mechanism comprises a coil, a magnetic yoke is arranged on the coil, a magnetic control semi-hard magnetic memory alloy is arranged on the circumferential surface of the magnetic yoke, a movable iron core is installed between the coil and the magnetic yoke in a sliding mode, and rapid closing or opening of the magnetic control operating mechanism can be achieved only by conducting current in a specific direction in the coil. Compared with a traditional molded case circuit breaker operating mechanism, the magnetic control operating mechanism is simple in structure, few in moving parts and high in mechanical reliability. Meanwhile, the magnetic control operating mechanism is short in opening and closing action time, the closing time is less than or equal to 10ms, and the opening time is less than or equal to 5ms, so that the breaking capacity is stronger, and the performance is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to low pressure switch technical field especially relates to a quick operation low pressure switch for AI intelligent switch cabinet. BACKGROUND

[0002] Low pressure switch is used for controlling and protecting the switch electric appliance of electrical equipment and circuit whose rated voltage is 1000V and below, can be divided into cut-off switch and grounding switch, generally controls through switch fuse, can also be subdivided into composite switch and fuse switch etc., can manually or automatically according to the need circuit is connected or disconnected, realizes the start-stop control of electrical equipment, such as controlling the power supply of motor, lighting fixture and other equipment;

[0003] In the low pressure switch technology of existing switch cabinet, there are the following problems:

[0004] Traditional low pressure switch has the problems of complex spring operating mechanism structure, low reliability, etc., resulting in large energy loss, high action complexity, affecting the response speed and reliability of switch, poor performance of contact material on static contact plate, weak oxidation resistance, weak ablation resistance, poor corrosion resistance, limited breaking capacity, low conductivity and short service life. UTILITY MODEL CONTENTS

[0005] Technical problem solved

[0006] In view of the deficiencies of prior art, the utility model provides a quick operation low pressure switch for AI intelligent switch cabinet, solves the problems of complex spring operating mechanism structure, low reliability, etc. of traditional low pressure switch, resulting in large energy loss, high action complexity, affecting the response speed and reliability of switch, poor performance of contact material on static contact plate, weak oxidation resistance, weak ablation resistance, poor corrosion resistance, limited breaking capacity, low conductivity and short service life.

[0007] Technical scheme

[0008] To achieve the above object, the utility model is realized by the following technical scheme:

[0009] A quick operation low pressure switch for AI intelligent switch cabinet, comprising a moving contact, a magnetic control shell is arranged on the moving contact, a magnetic control mechanism is arranged in the magnetic control shell, a disconnecting handle for rotating disconnecting is arranged at the front end of the magnetic control shell, the magnetic control mechanism comprises a coil, a magnetic yoke is arranged on the coil, a magnetic control semi-hard magnetic memory alloy is arranged on the circumferential surface of the magnetic yoke, and a moving iron core is slidably arranged between the coil and the magnetic yoke.

[0010] Preferably, the magnetic yoke is in the shape of a whole ring, and a part of the magnetic yoke is excavated to form a stepped shape with two sides symmetrically arranged.

[0011] Preferably, a support frame is arranged on the movable contact, a tripping torsion spring for tripping reset is arranged on the support frame, and a photosensitive sensor for detecting optical signals is arranged on the tripping handle.

[0012] Preferably, the movable iron core, the magnetically controlled semi-hard magnetic memory alloy, the magnetic yoke and the coil are arranged inside the magnetically controlled shell, a static contact plate is arranged at the lower end of the movable contact, and two groups of contacts are arranged on the static contact plate, and the two groups of contacts are made of normal-temperature high-conductivity graphene copper composite material.

[0013] Beneficial effects

[0014] In the novel magnetic control operating mechanism, only a current in a specific direction is passed through the coil, and then the magnetic control operating mechanism can be quickly tripped or closed. Compared with a traditional molded case circuit breaker operating mechanism, the magnetic control operating mechanism has simple structure, less moving parts and high mechanical reliability. Meanwhile, the magnetic control operating mechanism has short tripping and closing action time, the closing time is less than or equal to 10 ms, and the tripping time is less than or equal to 5 ms, so the breaking capacity is stronger, and the performance is more stable.

[0015] Secondly, the magnetic yoke has a stepped shape in cross section, which can reduce the weight of the magnetic yoke and the whole magnetic control mechanism, and reduce the contact area with the movable iron core, so that the resistance of the movable iron core during movement is reduced, the movement of the movable iron core is smoother, the operation performance of the switch is improved, the power consumption of the switch is reduced, and the operation cost is lower.

[0016] Secondly, the static contact plate uses normal-temperature high-conductivity graphene copper composite material contacts to replace the traditional copper silver-plated contacts of low-voltage switches, the oxidation resistance and ablation resistance of the contacts are improved by more than 50%, the corrosion resistance and breaking capacity are strong, the conductivity is improved by 5%, and the service life is improved by more than 20%. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the utility model can be implemented according to the content of the specification, the following is a preferred embodiment of the utility model and the detailed description of the drawings.

[0018] Figure 1 It is the structure diagram of the switch cabinet of the utility model.

[0019] Figure 2 It is the structure diagram of the magnetic control shell of the utility model.

[0020] Figure 3 It is the structure diagram of the low-voltage switch transmission mechanism of the utility model.

[0021] Legend: 11, moving iron core; 12, magnetic control semi-hard magnetic memory alloy; 13, magnetic yoke; 14, coil; 15, magnetic control shell; 21, moving contact; 22, opening torsion spring; 23, photosensitive sensor; 24, static contact plate; 25, opening handle. DETAILED DESCRIPTION

[0022] The embodiment of the application provides a quick operating low-voltage switch for an AI intelligent switch cabinet, effectively solves the problems of complex structure, low reliability and the like of a spring operating mechanism of a traditional low-voltage switch, and the technical problems of large energy loss, high action complexity, influence on response speed and reliability of the switch, poor performance of contact material on a static contact plate, weak oxidation resistance and ablation resistance, poor corrosion resistance, limited breaking capacity, low electrical conductivity and short service life. EMBODIMENT

[0023] As shown in Figure 1 , Figure 2 , in order to effectively solve the problems of complex structure, low reliability and the like of a spring operating mechanism of a traditional low-voltage switch, and the technical problems of large energy loss, high action complexity, influence on response speed and reliability of the switch, poor performance of contact material on a static contact plate, weak oxidation resistance and ablation resistance, poor corrosion resistance, limited breaking capacity, low electrical conductivity and short service life, the general idea is as follows:

[0024] In view of the problems in the prior art, the utility model provides a kind of quick operating low-voltage switch for AI intelligent switch cabinet, including moving contact 21, moving contact 21 is equipped with magnetic control shell 15, magnetic control shell 15 is equipped with magnetic control mechanism, the front end of magnetic control shell 15 is equipped with the opening handle 25 for rotating opening, and the opening handle 25 provides a kind of manual operation mode for operating personnel to make switch opening;

[0025] Magnetic control mechanism includes coil 14, by controlling the presence or absence and direction of current in coil 14, the state conversion of switch can be accurately controlled, and it is the key electronic components for realizing switch rotation;

[0026] Coil 14 is equipped with magnetic yoke 13, and the magnetic yoke 13 is used for magnetic flux transmission, provides a low-magnetic-resistance passage for magnetic field, guides magnetic field distribution, so that magnetic field can effectively act on moving iron core 11, guarantees that moving iron core 11 moves accurately in predetermined direction, and the utility model digs out a part from the magnetic yoke 13 to make the longitudinal section of the magnetic yoke 13 form a ladder shape which is symmetrically arranged on both sides;

[0027] The circumferential surface of the magnetic yoke 13 is provided with a magnetic control semi-hard magnetic memory alloy 12, which is a key material of the magnetic control operating mechanism. The magnetization magnetic force of the magnetic control semi-hard magnetic memory alloy 12 is controllable, so that when the coil 14 passes through a specific direction current, the magnetic control semi-hard magnetic memory alloy 12 can interact with the magnetic field to provide power for the movement of the moving iron core 11, thereby realizing the quick closing or opening operation of the switch.

[0028] The moving iron core 11 is slidingly installed between the coil 14 and the magnetic yoke 13. In the magnetic control operating mechanism, the moving iron core 11 is a component that directly responds to the change of the magnetic field and moves. When the coil 14 is powered to generate a magnetic field, the moving iron core 11, the magnetic control semi-hard magnetic memory alloy 12, the magnetic yoke 13 and the coil 14 are all arranged in the magnetic control shell 15.

[0029] The moving contact 21 is provided with a support frame, and the support frame is provided with an opening torsional spring 22 for opening reset. The opening torsional spring 22 provides additional power assistance during the opening process.

[0030] The opening handle 25 is provided with a photosensitive sensor 23 for detecting optical signals. The photosensitive sensor 23 is used to monitor some states of the switch, such as detecting the position of the moving contact 21 or the illumination of the surrounding environment of the switch, and converts the monitored information into an electrical signal to feed back to the control system.

[0031] The lower end of the moving contact 21 is provided with a static contact plate 24, and the static contact plate 24 is provided with two groups of contacts. Both groups of contacts are made of high-temperature high-conductivity graphene copper composite material.

[0032] Working principle: The magnetic control mechanism is composed of a magnetic control semi-hard magnetic memory alloy 12, a moving iron core 11, a magnetic yoke 13, a coil 14 and the like. When closing is needed, a specific direction current is passed through the coil 14 of the magnetic control operating mechanism. The current generates a magnetic field, which interacts with the magnetic control semi-hard magnetic memory alloy 12, so that the moving iron core 11 is subjected to magnetic force. The moving iron core 11 is driven by the magnetic force and moves quickly along the guide of the magnetic yoke 13, realizing the closing action. Since the magnetic control operating mechanism has simple structure, few moving parts and adopts direct action design, energy loss and action complexity are reduced, so the closing time can be controlled to ≤10ms, ensuring the quick closing operation;

[0033] When opening, the direction of the current in the coil 14 is changed (or the current is cut off, relying on the elastic force of the spring and other auxiliary components), the magnetic field changes, the moving iron core 11 is subjected to a reverse magnetic force or is quickly moved to the opening direction under the action of other auxiliary forces (such as the elastic force of the opening torsional spring 22), realizing the opening. The opening time is ≤5ms, which benefits from the quick response characteristics of the magnetic control operating mechanism and the low inertia brought by the few moving parts, so that the breaking capacity is stronger and the performance is more stable.

[0034] The static contact plate 24 adopts the room-temperature high-conductivity graphene copper composite material contact to replace the traditional low-voltage switch copper-plated silver contact, the oxidation resistance and the ablation resistance are improved by more than 50%, the corrosion resistance and the breaking capacity are strong, the conductivity is improved by 5%, and the service life is improved by more than 20%.

[0035] Finally, it should be noted that: Obviously, the above examples are merely for the purpose of clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A quick operating low voltage switch for an AI intelligent switchgear, comprising a moving contact (21), characterized in that: The moving contact (21) is provided with a magnetic control shell (15), and the magnetic control shell (15) is provided with a magnetic control mechanism; The front end of the magnetic control shell (15) is provided with a handle (25) for rotating and opening the switch. The magnetic control mechanism comprises a coil (14), the coil (14) is provided with a magnetic yoke (13), the circumferential surface of the magnetic yoke (13) is provided with a magnetic control semi-hard magnetic memory alloy (12), and a moving iron core (11) is slidably arranged between the coil (14) and the magnetic yoke (13).

2. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 1, characterized in that: The magnetic yoke (13) is in the shape of a whole ring, and a part of the magnetic yoke (13) is excavated to form a stepped shape in the longitudinal section of the magnetic yoke (13).

3. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 1, characterized in that: The moving contact (21) is provided with a support frame.

4. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 3, characterized in that: The support frame is provided with an opening spring (22) for opening and resetting.

5. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 4, characterized in that: The handle (25) is provided with a photosensitive sensor (23) for detecting optical signals.

6. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 5, characterized in that: The moving iron core (11), the magnetic control semi-hard magnetic memory alloy (12), the magnetic yoke (13) and the coil (14) are arranged in the magnetic control shell (15).

7. The quick operating low voltage switch for the AI intelligent switch cabinet according to claim 6, characterized in that: The lower end of the moving contact (21) is provided with a static contact plate (24), and the static contact plate (24) is provided with two groups of contacts, and the two groups of contacts are made of high-temperature high-conductivity graphene copper composite material.

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