CN212625426U

CN212625426U - Electronic molded case circuit breaker

Info

Publication number: CN212625426U
Application number: CN202021993127.5U
Authority: CN
Inventors: 黄竹根; 张腾; 曾长发; 方刚; 高旭祥
Original assignee: ANDELI GROUP CO LTD
Current assignee: ANDELI GROUP CO LTD
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-02-26
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses an electronic molded case circuit breaker, which comprises an electronic release and a plurality of current transformers which are arranged on a base, a plurality of mounting grooves are formed in the base, the side wall of one mounting groove is provided with a fixed column for fixing the electronic release, the bottom surface of the mounting groove is provided with a yielding hole opposite to the bottom end of the fixed column, a mounting gap is formed between the fixed column and the yielding hole, the mounting groove is also internally provided with a metering mutual inductor which can be partially accommodated in the mounting gap, by adopting the technical scheme, under the condition that does not change the fixed column position, the design of stepping down through the fixed column makes the installation space just in time satisfy the required space of installation of measurement mutual-inductor in the mounting groove, can install current transformer and measurement mutual-inductor simultaneously in same mounting groove, realizes moulded case circuit breaker's measurement function, satisfies smart power grids's use needs, promotes the performance of product.

Description

Electronic molded case circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to electronic type moulded case circuit breaker.

Background

At present, along with the popularization of an intelligent power grid, an electronic molded case circuit breaker is widely used for infrequent switching and motor protection in a distribution line, has the functions of overload long delay inverse time, short delay time, short circuit instantaneous and under-voltage protection, and can protect the line and power supply equipment from being damaged.

The existing electronic molded case circuit breaker mainly comprises a base, a three-phase conductive copper bar, a contact mechanism, a plurality of current transformers, an electronic release, a control circuit board and the like, wherein the three-phase conductive copper bar is arranged on the base, the electronic release is arranged on the top of the base and erected above the three-phase conductive copper bar according to design requirements, a plurality of mounting cavities suitable for mounting current mutual inductance are arranged in the base, in order to reliably fix the electronic release, a fixed column is formed on the side wall of one mounting cavity, the fixed column vertically extends to the bottom of the mounting groove, a nut is embedded in the fixed column, the electronic release is fixed on the base when the nut is penetrated through by a bolt, the fixed column occupies a part of space of the mounting cavity, and the normal mounting of the current transformers is not influenced but limited by the mounting positions of the fixed column, the space of the installation cavity becomes narrower and more crowded, so that the installation cavity can not be provided with the types of mutual inductors with other functions, the electronic molded case circuit breaker is limited to develop towards a multifunctional direction, and the use performance of the product is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the installation cavity in the moulded case circuit breaker among the prior art and receiving the mounted position restriction of fixed column, makes the installation cavity space become more narrow and small crowded, leads to this installation cavity can't go the mutual-inductor type of installing other functions again, has restricted the problem of moulded case circuit breaker to multi-functional direction development.

For solving the technical problem, the utility model provides an electronic type moulded case circuit breaker, including the base, install in the electronic release and a plurality of current transformer of base, the shaping has to be fit for installing a plurality ofly in the base a plurality of mounting grooves of current transformer, one of them be provided with on the lateral wall of mounting groove and be used for fixing the fixed column of electronic release, the bottom surface of mounting groove seted up with the hole of stepping down that the fixed column bottom is relative, the fixed column with it is formed with the installation space to step down between the hole, still install in the mounting groove can partially hold in measurement mutual-inductor in the installation space.

As a preferred scheme, a fixing hole is formed in the fixing column, and the bottom end of the fixing column is higher than the metering transformer.

As a preferred scheme, the bottom of the base is provided with a bottom cover plate which covers the abdicating hole.

As a preferable scheme, the metering transformer and the current transformer are oppositely arranged in the mounting groove, and a three-phase conductor penetrating through the metering transformer and the current transformer is arranged in the base.

As a preferred scheme, be provided with spacing slot on the lateral wall of the both sides of mounting groove, current transformer is square structure, and its both sides are for being fit for inserting the iron core support in the spacing slot.

As a preferable scheme, the electronic release is installed on the top of the installation groove through a fixing structure and is connected with the current transformer.

Preferably, the fixing structure comprises a fixing plate mounted at the bottom of the electronic release, and a fastener penetrating through the fixing plate and fixedly connected in a fixing hole of the fixing column.

As a preferred scheme, the electronic release comprises a release body and an installation shell frame covering the outer side of the release body, and a plurality of installation buckles which are in matched clamping connection with a bottom cover plate of the installation shell frame are arranged on the fixed plate.

As a preferred scheme, the electronic release further comprises a driving rod driven by the release body to perform linear reciprocating motion, a driving groove is formed in one side of the driving rod, a traction rod is rotatably arranged on the base, and a release plate extending into the driving groove is arranged on the traction rod.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the electronic molded case circuit breaker provided by the utility model is used for installing and fixing the electronic release according to the arrangement of the fixed column on the side wall of the mounting groove, under the condition of not changing the position of the fixed column, the bottom surface of the mounting groove is provided with a abdicating hole corresponding to the fixed column, the die sinking forming of the fixed column is more convenient on the basis of the abdicating hole, so that the fixed column does not need to extend to the bottom surface of the mounting groove in the forming process, namely, the forming height of the fixed column is reduced, thereby a section of mounting gap suitable for accommodating the metering mutual inductor is formed between the fixed column and the abdicating hole, by adopting the technical scheme, the mounting gap just meets the mounting space required by the metering mutual inductor in the mounting groove through the abdicating design of the fixed column, thus the mounting of the metering mutual inductor can not be hindered, and the current mutual inductor and the metering mutual inductor, the metering function of the molded case circuit breaker is realized, the use requirement of the smart power grid is met, and the use performance of the product is improved.

2. The utility model provides an among the electronic type moulded case circuit breaker, install the fixed plate through the cooperation of installation shell frame and installation buckle with the electronic release earlier on, then pass through fixed knot structure with the fixed plate and fix on the predetermined mounted position at mounting groove top to it is fixed to realize the installation of electronic release on the base, the fixed plate provides mounting platform for the electronic release, and simple to operate is swift, and the cooperation is fixed reliable, and installation stability is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic molded case circuit breaker according to the present invention;

fig. 2 is a schematic view of an installation structure of the metering transformer in the base;

fig. 3 is a schematic cross-sectional view of the electronic molded case circuit breaker of the present invention;

fig. 4 is a schematic structural diagram of the electronic trip of the present invention;

description of reference numerals: 1-base, 11-mounting groove, 12-limiting slot, 13-trip plate, 2-fixing column, 3-abdicating hole, 4-mounting gap, 5-electronic trip, 51-mounting shell frame, 52-driving rod, 53-driving groove, 6-current transformer, 7-metering transformer, 8-fixing plate and 81-mounting buckle.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides an electronic molded case circuit breaker as shown in fig. 1-4, including base 1, install in electronic release 5 and a plurality of current transformer 6 of base 1, the shaping has a plurality of suitable installations current transformer's a plurality of mounting grooves 11 in base 1, one of them be provided with on the lateral wall of mounting groove 11 and be used for fixing electronic release's fixed column 2, the hole of stepping down 3 relative with fixed column 2 bottom is seted up to the bottom surface of mounting groove 11, fixed column 2 with be formed with installation space 4 between the hole of stepping down 3, still install in the mounting groove 11 can partially hold in measurement mutual inductor 7 in the installation space 4.

The above embodiment is a core technical solution of this embodiment, the electronic trip 5 is installed and fixed on the side wall of the installation groove according to the arrangement of the fixing column, under the condition that the position of the fixing column 2 is not changed, the bottom surface of the installation groove 11 is provided with the abdicating hole 3 corresponding to the fixing column, the open hole base of the abdicating hole is more convenient for the die sinking forming of the fixing column, so that the fixing column 2 does not need to extend to the bottom surface of the installation groove 11 in the forming process, i.e. the forming height of the fixing column is reduced, thereby forming the installation gap 4 suitable for accommodating the metering transformer 7 by hollowing between the fixing column 2 and the abdicating hole 3, by adopting the technical solution, the installation gap just meets the installation space required by the metering transformer in the installation groove through the abdicating design of the fixing column 2, so that the installation of the metering transformer 7 is not hindered, the current transformer 6 and the metering transformer 7 can be installed in the same installation groove at the same time, the metering function of the molded case circuit breaker is achieved, the use requirement of the intelligent power grid is met, and the use performance of products is improved.

As a preferred embodiment, be provided with the fixed orifices on fixed

column

2, 2 bottoms of fixed column are higher than measurement mutual-inductor 7 sets up, can make comparatively smooth and easy the packing into of measurement mutual-inductor installation space department effectively avoids measurement mutual-inductor 7 with 2 bottoms of fixed column take place to bump the phenomenon, and it is comparatively convenient to install, wherein, follow in order to prevent impurity such as outside dust, dew 3 positions of stepping down the hole enter into inside the base 1, the bottom of base 1 is installed and is sheltered from the end cover board in the hole of stepping down.

Referring to fig. 2-3, the metering transformer 7 and the current transformer 6 are arranged in the mounting groove 11 in tandem and oppositely, a three-phase conductor passing through the metering transformer 7 and the current transformer 6 is arranged in the base 1, the current transformer 6 is used for cooperating with an electronic release to act and cutting off a power supply of the circuit breaker when a circuit in the circuit breaker is short-circuited or has a leakage fault, the metering transformer 4 is used for realizing the metering function of the circuit breaker and cooperating with an intelligent power grid to timely master and monitor various parameters of the power grid operation, in order to reliably install the current transformer, the side walls on two sides of the mounting groove 11 are provided with limiting slots 12, the current transformer 6 is in a square structure, two sides of the current transformer are iron core supports suitable for being inserted into the limiting slots 12, and the limiting slots play a role in limiting and installing the current transformer, the installation stability is good.

The following describes the installation of the electronic trip unit in detail with reference to fig. 1 and 4:

the electronic release 5 is installed on the top of the installation groove 11 through a fixing structure and is connected with the current transformer 6, specifically, the fixing structure comprises a fixing plate 8 installed at the bottom of the electronic release 5 and a fastener penetrating through the fixing plate 8 and fixedly connected in a fixing hole of the fixing column 2, in addition, a fixing hole installed in a matching manner with the fixing plate 8 is further formed in the top of the base 1, the fixing plate 8 provides an installation platform for the electronic release 7, and installation stability of the electronic release 7 on the base 1 is guaranteed.

Further preferred setting, electronic release 5 includes the release body, and the cladding is in the installation rack 51 in the release body outside, be equipped with on the fixed plate 8 with a plurality of installation buckles 81 of the bottom cover cooperation joint of installation rack 51, through the above-mentioned structure setting, will first electronic release 7 is installed through the cooperation of installation rack 51 with installation buckle 81 on the fixed plate 8, then fixes fixed plate 8 through fixed knot structure on the predetermined position at mounting groove 11 top to realize that the installation of electronic release 7 on the base is fixed, can realize the modular assembly of product, simple to operate is swift, and the cooperation is fixed reliable, and installation stability is good.

As shown in fig. 4, the electronic release 5 further includes a driving rod 52 driven by the release body to perform linear reciprocating motion, a driving groove 53 is formed in one side of the driving rod 52, a traction rod is rotatably arranged on the base 1, a tripping plate 13 penetrating into the driving groove 53 is arranged on the traction rod, and when the traction rod is triggered, the internal operating mechanism of the circuit breaker is driven to perform tripping operation, so that tripping and tripping of the circuit breaker are realized.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides an electronic type moulded case circuit breaker, include base (1), install in electronic release (5) and a plurality of current transformer (6) of base (1), it is a plurality of suitable installation to form in base (1) a plurality of mounting groove (11) of current transformer, one of it is provided with on the lateral wall of mounting groove (11) and is used for fixing fixed column (2), its characterized in that of electronic release: the bottom surface of mounting groove (11) seted up with fixed column (2) bottom is relative hole of stepping down (3), fixed column (2) with it is formed with installation space (4) to step down between hole (3), still install in mounting groove (11) can partially hold in measurement mutual-inductor (7) in installation space (4).

2. The electronic molded case circuit breaker according to claim 1, wherein: the fixed column (2) is provided with a fixed hole, and the bottom end of the fixed column (2) is higher than the metering transformer (7).

3. The electronic molded case circuit breaker according to claim 1, wherein: the bottom of the base (1) is provided with a bottom cover plate which covers the abdicating hole (3).

4. The electronic molded case circuit breaker according to claim 3, wherein: the metering mutual inductor (7) and the current mutual inductor (6) are arranged in the mounting groove (11) oppositely, and a three-phase conductor penetrating through the metering mutual inductor (7) and the current mutual inductor (6) is arranged in the base (1).

5. The electronic molded case circuit breaker according to claim 4, wherein: be provided with spacing slot (12) on the both sides lateral wall of mounting groove (11), current transformer (6) are square structure, and its both sides are for being fit for inserting the iron core support in spacing slot (12).

6. The electronic molded case circuit breaker according to any one of claims 1 to 5, wherein: the electronic release (5) is installed at the top of the installation groove (11) through a fixing structure and is connected with the current transformer (6).

7. The electronic molded case circuit breaker according to claim 6, wherein: the fixing structure comprises a fixing plate (8) installed at the bottom of the electronic release (5), and a fastener penetrating through the fixing plate (8) and fixedly connected in a fixing hole of the fixing column (2).

8. The electronic molded case circuit breaker according to claim 7, wherein: the electronic release (5) comprises a release body and an installation shell frame (51) coated on the outer side of the release body, and a plurality of installation buckles (81) which are matched and clamped with a bottom cover plate of the installation shell frame (51) are arranged on the fixed plate (8).

9. The electronic molded case circuit breaker of claim 8, wherein: the electronic release (5) further comprises a driving rod (52) driven by the release body to do linear reciprocating motion, a driving groove (53) is formed in one side of the driving rod (52), a traction rod is rotatably arranged on the base (1), and a releasing plate (13) penetrating into the driving groove (53) is arranged on the traction rod.