CN221102784U - Novel low-voltage switchgear drawer structure - Google Patents

Abstract

The utility model relates to the technical field of low-voltage complete switch equipment, and particularly discloses a novel low-voltage switch cabinet drawer structure, which comprises a drawer metal sheet metal shell, wherein a wall-penetrating current transformer, a wire-penetrating fixing piece, a wire-penetrating copper bar and an insulating frame are arranged on the rear end face of the drawer metal sheet metal shell, a drawer interlocking button, a circuit breaker operation extension handle and an instrument are arranged on the front end face of the drawer metal sheet metal shell, a wire-penetrating connection bar, a molded case circuit breaker support, a molded case circuit breaker, a drawer propulsion interlocking mechanism, a circuit breaker operation interlocking mechanism, a manual operation mechanism, a wire-penetrating connection bar and a relay are arranged in the drawer metal sheet metal shell, the wire-penetrating copper bar, the wire-penetrating connection bar, the circuit breaker, the wire-penetrating connection bar and the wire-penetrating copper bar are sequentially connected, and the wire-penetrating copper bar can measure the current value of the wire-penetrating copper bar when the circuit breaker is closed. According to the utility model, through the adoption of the through-wall type current transformer, the space occupied by the current transformer arranged in the drawer is saved.

Description

Novel low-voltage switchgear drawer structure

Technical Field

The utility model relates to the technical field of low-voltage complete switch equipment, in particular to a novel low-voltage switch cabinet drawer structure.

Background

The low-voltage power distribution cabinet commonly used at present adopts a drawer type structure, namely, each drawer forms a low-voltage outlet loop. In order to achieve protection of the distribution system and the electrical loads, a current transformer needs to be arranged at each occurrence loop. At present, the power distribution system is continuously improving the intelligent level, and the power equipment is required to have the protection function, measurement and online monitoring functions, so that more current transformers are required to be added in a power supply loop. The drawers of the low-voltage power distribution cabinet also need to increase the number of current transformers in order to realize protection, monitoring and measurement functions.

On the other hand, as industry becomes more and more intense, some space-compact substations and substations are continuously appeared, which has a certain requirement on the size of the power equipment, and the design of the power equipment is required to be more compact and standardized. The drawers of the low voltage power distribution cabinet are repeatedly compressed resulting in no more space already being available for installing more current transformer equipment.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a novel low-voltage switch cabinet drawer structure, and a current transformer can be added for measurement or protection on the premise of not changing the integral structure of a low-voltage outlet cabinet drawer by adopting a wall-penetrating current transformer.

As a first aspect of the present utility model, a novel low-voltage switchgear drawer structure is provided, including a drawer metal sheet metal shell, a wall-penetrating current transformer, a wire-penetrating fixing piece, a wire-penetrating copper bar, a wire-outgoing copper bar and an insulation frame are installed on the rear end surface of the drawer metal sheet metal shell, a drawer interlocking button, a circuit breaker operation extension handle and an instrument are installed on the front end surface of the drawer metal sheet metal shell, a wire-penetrating connection bar, a molded case circuit breaker support, a molded case circuit breaker, a drawer push interlocking mechanism, a circuit breaker operation interlocking mechanism, a manual operation mechanism, a wire-outgoing connection bar and a relay are installed inside the drawer metal sheet metal shell, the wire-penetrating copper bar is connected with the molded case circuit breaker through the wire-penetrating connection bar, the wire-outgoing copper bar penetrates through the wall-penetrating current transformer, and when the molded case circuit breaker is closed, the wall-penetrating current transformer can measure a current value of the wire-outgoing copper bar; pressing the drawer interlocking button can trigger the drawer pushing interlocking mechanism to move so as to unlock the novel low-voltage switch cabinet drawer structure; the circuit breaker operation interlocking mechanism is used for unlocking the manual operation mechanism, and the manual operation mechanism can be driven to move by rotating the circuit breaker operation extension handle so as to realize the switching-on and switching-off operation of the molded case circuit breaker.

Further, the molded case circuit breaker support is used for installing the molded case circuit breaker.

Further, the incoming wire fixing piece is used for fixing the incoming wire copper bar.

Further, the insulating frame serves as an outer insulator of the through-wall current transformer.

Further, the secondary output terminal of the through-wall type current transformer is placed in the drawer metal sheet metal shell, and provides a current signal for the measurement of the instrument.

The novel low-voltage switch cabinet drawer structure provided by the utility model has the following advantages: the space occupied by the current transformer arranged in the drawer is saved, and the wall-penetrating current transformer is adopted, so that the current transformer can be added on the premise of not changing the integral structure of the drawer of the low-voltage outlet cabinet for measurement or protection.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model.

Fig. 1 is a front view of a novel low-voltage switchgear drawer structure provided by the utility model.

Fig. 2 is a top view of the novel low-voltage switchgear drawer structure provided by the utility model.

Fig. 3 is a rear view of the novel low voltage switchgear drawer structure provided by the utility model.

Fig. 4 is a schematic diagram of the novel low-voltage switchgear drawer structure provided by the utility model installed in a low-voltage outlet cabinet.

Reference numerals illustrate: 1-through-wall type current transformer, 2-inlet wire mounting, 3-drawer metal sheet metal shell, 4-inlet wire copper bar, 5-outlet wire copper bar, 6-insulating frame, 7-inlet wire connecting row, 8-plastic shell circuit breaker support, 9-plastic shell circuit breaker, 10-drawer push interlocking mechanism, 11-circuit breaker operation interlocking mechanism, 12-manual operation mechanism, 13-outlet wire connecting row, 14-relay, 15-drawer interlocking button, 16-circuit breaker operation extension handle, 17-instrument, 18-low voltage outlet wire cabinet.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description refers to the specific implementation, structure, characteristics and effects of a novel low-voltage switch cabinet drawer structure according to the utility model by combining the accompanying drawings and the preferred embodiment. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the explanation of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless otherwise indicated. For example, the connection may be a fixed connection, or may be a connection through a special interface, or may be an indirect connection via an intermediary. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the embodiment, as shown in fig. 1-3, the drawer structure of the novel low-voltage switch cabinet comprises a drawer metal sheet metal shell 3, a wall-penetrating type current transformer 1, a wire-in fixing piece 2, a wire-in copper bar 4, a wire-out copper bar 5 and an insulating frame 6 are installed on the rear end face of the drawer metal sheet metal shell 3, a drawer interlocking button 15, a circuit breaker operation extension handle 16 and an instrument 17 are installed on the front end face of the drawer metal sheet metal shell 3, a wire-in connection bar 7, a molded case circuit breaker support 8, a molded case circuit breaker 9, a drawer pushing interlocking mechanism 10, a circuit breaker operation interlocking mechanism 11, a manual operation mechanism 12, a wire-out connection bar 13 and a relay 14 are installed in the drawer metal sheet metal shell 3, the wire-in copper bar 4 is connected with the molded case circuit breaker 9 through the wire-out connection bar 13, the wire-out copper bar 5 penetrates through the wall-penetrating type current transformer 1, and when the wire-out copper bar 9 is in the molded case circuit breaker, the current transformer is measured, and the current transformer 5 can be further measured; pressing the drawer interlocking button 15 can trigger the drawer pushing interlocking mechanism 10 to move so as to unlock the novel low-voltage switch cabinet drawer structure; the breaker operation interlocking mechanism 11 is used for unlocking the manual operation mechanism 12, and rotating the breaker operation extension handle 16 can drive the manual operation mechanism 12 to move so as to realize the opening and closing operation of the molded case breaker 9.

In the present embodiment, the molded case circuit breaker bracket 8 is used for mounting the molded case circuit breaker 9.

In this embodiment, the incoming wire fixing member 2 is used for fixing the incoming wire copper bar 4.

In this embodiment, the insulating frame 6 serves as an outer insulator of the wall-penetrating current transformer 1.

In this embodiment, the secondary output terminal of the through-wall current transformer 1 is placed inside the drawer sheet metal housing 3 to provide a current signal for the measurement of the meter 17.

The secondary output terminal of the through-wall type current transformer 1 can be placed on the outer side of the drawer metal sheet metal shell 3 to provide current signals for an externally installed kilowatt-hour meter or other measuring equipment.

As shown in fig. 4, the novel low-voltage switchgear drawer structure is installed in the low-voltage outlet cabinet 18, and the drawer is pushed into the bottom of the low-voltage outlet cabinet 18, so that the outlet copper bar 5 contacts with a plug of the low-voltage outlet cabinet 18, and is used for forming an outlet of the low-voltage outlet cabinet 18. When the drawer metal sheet metal shell 3 is pushed to a closing position, the manual operation mechanism 12 is unlocked through the breaker operation interlocking mechanism 11, and at the moment, the manual operation mechanism 12 can be driven to move by rotating the breaker operation extension handle 16, so that the molded case circuit breaker 9 is closed, current is supplied through the incoming copper bar 4, the incoming connection bar 7, the molded case circuit breaker 9, the outgoing connection bar 13 and the outgoing copper bar 5, and the through-wall current transformer 1 can measure the current value of the outgoing copper bar 5, so that measurement and protection functions are realized; when the molded case circuit breaker 9 is operated to open, the current is disconnected. The relay 14 is used for outputting a switching-on/off signal of the molded case circuit breaker 9.

In this embodiment, the incoming copper bar 4 can be directly connected with the bus bar of the low-voltage outgoing line cabinet 18 in a plug-in manner, and the outgoing copper bar 5 can be directly connected with the feeder end of the low-voltage outgoing line cabinet 18.

Therefore, the novel low-voltage switch cabinet drawer structure provided by the utility model omits the space occupied by the current transformer arranged in the drawer, and the wall-penetrating current transformer is adopted, so that the current transformer can be added for measurement or protection on the premise of not changing the integral structure of the low-voltage outlet cabinet drawer. The drawer can be directly plugged and pulled under the condition of no power failure, and the drawer can be overhauled inside, so that the drawer can be plugged and pulled.

The present utility model is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalents and modifications can be made to the above-mentioned embodiments without departing from the scope of the utility model.

Claims (5)

1. The utility model provides a novel low tension switchgear drawer structure, its characterized in that includes drawer metal sheet metal housing (3), wall-through type current transformer (1), inlet wire mounting (2), inlet wire copper bar (4), wire copper bar (5) and insulating frame (6) are installed to the rear end face of drawer metal sheet metal housing (3), drawer interlocking button (15), circuit breaker operation extension handle (16) and instrument (17) are installed to the front end face of drawer metal sheet metal housing (3), the internally mounted of drawer metal sheet metal housing (3) has inlet wire connecting bar (7), moulded case circuit breaker support (8), moulded case circuit breaker (9), drawer impels interlocking mechanism (10), circuit breaker operation interlocking mechanism (11), manual operating mechanism (12), wire connecting bar (13) and relay (14), wire copper bar (4) are passed through inlet wire connecting bar (7) are connected moulded case circuit breaker (9), wire copper bar (5) are passed through wire connecting bar (13), wire copper bar (5) pass through when moulded case circuit breaker (1) current transformer (1) pass through wall-through type current transformer (1); pressing the drawer interlocking button (15) can trigger the drawer pushing interlocking mechanism (10) to move so as to unlock the novel low-voltage switch cabinet drawer structure; the circuit breaker operation interlocking mechanism (11) is used for unlocking the manual operation mechanism (12), and the circuit breaker operation extension handle (16) is rotated to drive the manual operation mechanism (12) to move so as to realize the switching-on and switching-off operation of the molded case circuit breaker (9).

2. The novel low-voltage switchgear drawer structure according to claim 1, characterized in that the molded case circuit breaker support (8) is used for mounting the molded case circuit breaker (9).

3. The novel low-voltage switch cabinet drawer structure according to claim 1, wherein the incoming wire fixing piece (2) is used for fixing the incoming wire copper bar (4).

4. The novel low-voltage switchgear drawer structure according to claim 1, characterized in that the insulating frame (6) serves as an outer insulator of the wall-penetrating current transformer (1).

5. The novel low-voltage switch cabinet drawer structure according to claim 1, wherein the secondary output terminal of the through-wall type current transformer (1) is placed inside the drawer metal sheet metal shell (3) and provides a current signal for the measurement of the instrument (17).