CN221126563U

CN221126563U - Non-standard independent centrally-installed switchgear

Info

Publication number: CN221126563U
Application number: CN202323079038.6U
Authority: CN
Inventors: 王宏德; 李志勇; 安金喜
Original assignee: Baoji Keweier Electrical Appliance Co ltd
Current assignee: Baoji Keweier Electrical Appliance Co ltd
Priority date: 2023-11-15
Filing date: 2023-11-15
Publication date: 2024-06-11
Anticipated expiration: 2033-11-15

Abstract

The utility model provides a cabinet in nonstandard independence type is put to be equipped with in the inlet wire room with insulating support in inside inlet wire end copper bar lower extreme electric connection's circuit breaker upper contact box, high voltage fuse and voltage transformer, introduce its inside inlet wire cable terminal and inlet wire end copper bar upper end by inlet wire room upper end and be connected, voltage transformer's secondary end and the indoor instrument component electric connection of secondary instrument, current transformer passes through circuit breaker lower contact box and installs the circuit breaker handcart in the circuit breaker handcart, be equipped with the measurement voltage handcart in the PT handcart, locate the fuse on the measurement voltage handcart and with the measurement voltage transformer that the fuse is connected, the fuse is through locating the indoor PT handcart contact box of being qualified for next round of competitions and circuit breaker lower contact box electric connection. The utility model solves the problem that the standard in-built cabinet wire inlet and outlet mode and the operation power supply cannot meet the requirements of customers by optimizing the cabinet body internal structure, and meets the functions of live display, condensation prevention, metering, measurement and protection.

Description

Non-standard independent centrally-installed switchgear

Technical Field

The utility model belongs to the technical field of electrical equipment, and particularly relates to a nonstandard independent centrally installed switchgear.

Background

The middle-mounted cabinet is totally called as metal armoured movable middle-mounted closed switch equipment, belongs to high-voltage power distribution devices, and is mainly used for power transmission of power plants, small and medium-sized generators, power reception and transmission of secondary substation of power systems, power distribution of industrial and mining enterprises and institutions, starting of large-sized high-voltage motors and the like. At present, when a user supplies 10KV power, because power supply equipment is single and is independently installed in a power distribution room, a centrally installed switchgear which can be used for incoming lines and outgoing lines and is independently installed is required to be designed, the centrally installed switchgear is required to be designed to have a structure that both the incoming lines of cables and the appearance of the cables are also provided, and the self-powered operation power supply is provided with high-voltage power distribution equipment which is independently metered, measured and protected as a whole.

Disclosure of utility model

The utility model solves the technical problems that: the utility model provides a put cabinet in nonstandard independence formula, through optimizing cabinet body inner structure, adopt the inlet wire room inlet wire of cabinet body upper portion and the outlet wire room of lower part is qualified for the next round of competitions, provide operating power supply and for PT handcart room provides measurement, protection detection voltage for the circuit breaker is synthesized, possess trade machinery electric "five proofings" shutting function, satisfy simultaneously that electrified demonstration, anti-condensation, measurement, protect function, can be very big satisfy user's requirement function, satisfy security, reliability, economic nature, practicality requirement.

The utility model adopts the technical scheme that: the utility model provides a cabinet in independent formula of non-standard, includes the cabinet body, the cabinet body is inside to be divided into the upper left partial inlet wire room, upper right partial circuit breaker handcart room, lower left partial outlet wire room and lower right partial PT handcart room by the baffle, circuit breaker handcart room upper right part still separates through the baffle has the secondary instrument room, be equipped with in the inlet wire room with insulating support in the indoor circuit breaker upper contact box and the high-voltage fuse of inside inlet wire end copper bar lower extreme electric connection, and high-voltage fuse is connected with the indoor voltage transformer of inlet wire, by the inlet wire cable terminal and the inlet wire end copper bar upper end connection of its inside of inlet wire room upper end introduction, the secondary end and the indoor instrument component electric connection of secondary instrument of voltage transformer to provide required control power and operation power for instrument component, be equipped with current transformer, circuit breaker lower contact box, PT handcart contact box, earthing switch and arrester in the outlet wire room through circuit breaker lower contact box with install in the indoor circuit breaker handcart, the circuit breaker is connected with the meter and the meter of circuit breaker handcart by the inlet wire terminal and the inlet wire terminal is equipped with the meter of meter and the meter, and the meter is located in the indoor meter of circuit breaker handcart with the meter and the meter of the meter.

The wire inlet end copper bar is supported in the wire inlet chamber in an insulating manner through a wire inlet end live display sensor fixed in the wire inlet chamber, and the wire inlet end copper bar is electrically connected with the wire inlet end live display sensor.

Further, an outgoing line end live display sensor used for supporting the outgoing line end copper bar and electrically connected with the outgoing line end copper bar is arranged in the outgoing line chamber, the outgoing line end copper bar is electrically connected with the grounding switch, and the current transformer is connected with the outgoing line end copper bar, the lightning arrester and the outgoing line cable terminal.

Further, instrument elements in the secondary instrument room comprise a secondary microcomputer protection device, a relay, a metering device, a measuring instrument, an illuminating lamp, an indicating lamp, an operation switch, a control switch and an electrified display, and the incoming line end electrified display sensor and the outgoing line end electrified display sensor are respectively connected with the corresponding electrified display.

Further, insulation covers are arranged at the connection positions of the two ends of the fuse and the metering voltage transformer and the metering voltage handcart contact arm respectively.

Further, the top of the cabinet body is provided with a pressure release channel which is respectively communicated with the incoming line chamber, the breaker handcart chamber, the outgoing line chamber and the PT handcart chamber.

Compared with the prior art, the utility model has the advantages that:

1. According to the technical scheme, through optimizing the internal structure of the cabinet body, the inlet wire of the inlet wire chamber at the upper part of the cabinet body is adopted, and the outlet wire chamber at the lower part of the cabinet body is used for outlet wires, so that the requirement of a customer inlet wire and outlet wire mode is met;

2. The technical scheme is that the current transformer and the voltage transformer are arranged, so that the centrally installed switchgear has the function of having an operating power supply, provides the operating power supply for comprehensive protection of a circuit breaker, and provides metering, measuring and protection detection voltages for a PT handcart room;

3. The setting of this technical scheme earthing switch and double-deck handcart, when being convenient for operation maintenance, possess trade machinery electric "five proofings" shutting function, satisfy electrified demonstration, prevent condensation, measurement, protect function simultaneously, can be very big satisfy user's requirement function, satisfy security, reliability, economic nature, practicality requirement.

Drawings

FIG. 1 is a schematic diagram of the structural distribution of the present utility model.

Detailed Description

The technical solution in the embodiments of the present utility model will be clearly and completely described in the following with reference to fig. 1 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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 be within the scope of the utility model.

In this context, unless otherwise indicated, it is to be understood that: the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The nonstandard independent centrally installed switchgear comprises a cabinet body 1, wherein the interior of the cabinet body 1 is divided into an inlet wire chamber 1-1 at the upper left part, a circuit breaker handcart chamber 1-2 at the upper right part, an outlet wire chamber 1-3 at the lower left part and a PT handcart chamber 1-4 at the lower right part by a partition plate, the upper right part of the circuit breaker handcart chamber 1-2 is also divided into a secondary instrument chamber 1-5 by the partition plate, a circuit breaker upper contact box 4 and a high-voltage fuse 20 which are electrically connected with the lower end of an inlet wire end copper bar 5 which is supported in the interior in an insulating manner are arranged in the inlet wire chamber 1-1, the high-voltage fuse 20 is connected with a voltage transformer 3 in the inlet wire chamber 1-1, an inlet wire cable terminal 2 which is introduced into the interior by the upper end of the inlet wire chamber 1-1 is connected with the upper end of the inlet wire end copper bar 5, the secondary end of the voltage transformer 3 is electrically connected with instrument elements in the secondary instrument room 1-5, and provides a needed control power supply and an operation power supply for the instrument elements, a current transformer 6, a breaker lower contact box 7, a PT handcart contact box 16, a grounding switch 12 and a lightning arrester 10 are arranged in the outgoing line room 1-3, the current transformer 6 is connected with a breaker handcart 8 arranged in the breaker handcart room 1-2 through the breaker lower contact box 7, the lightning arrester 10 and the grounding switch 12 and an outgoing line cable terminal 9 introduced into the outgoing line room 1-3 from the lower end are connected with the output end of the current transformer 6 in parallel, a metering voltage handcart 13, a fuse 15 arranged on the metering voltage handcart 13 and a metering voltage transformer 14 connected with the fuse 15 are arranged in the PT handcart room 1-4, the fuse 15 is electrically connected with the lower contact box 7 of the circuit breaker through the PT handcart contact box 16 arranged in the outlet chamber 1-3, and the metering voltage transformer 14 provides metering voltage for the meter in the closing state of the circuit breaker handcart 8; in the structure, the requirement of a customer wire inlet and outlet mode is met by optimizing the internal structure of the cabinet body and adopting the wire inlet chamber 1-1 at the upper part of the cabinet body 1 to inlet wires and the wire outlet chamber 1-3 at the lower part to outlet wires; the current transformer 6 and the voltage transformer 3 are arranged, so that the centrally installed switchgear has the function of self-carrying an operating power supply, provides the operating power supply for the comprehensive protection of the circuit breaker and provides metering, measuring and protection detection voltages for a PT handcart room; the inlet wire side and the outlet wire side of the structure are respectively provided with a connecting point, so that independent setting and use can be realized, the structure of the centrally installed switchgear is simplified, the quantity of centrally installed cabinets and occupied sites which are arranged for meeting technical requirements are reduced, and customer requirements are met.

In order to detect the electrified condition of the wire inlet end, the wire inlet end copper bar 5 is supported in the wire inlet chamber 1-1 in an insulating manner through a wire inlet end electrified display sensor 17 fixed in the wire inlet chamber 1-1, the wire inlet end copper bar 5 is electrically connected with the wire inlet end electrified display sensor 17, and the wire inlet end electrified display sensor 17 is used for playing a role in insulating and supporting the wire inlet end copper bar 5 on one hand and detecting whether the wire inlet end copper bar 5 is electrified on the other hand.

In order to detect the electrification condition of the wire outlet, a wire outlet electrification display sensor 19 for supporting the wire outlet copper bar 18 and electrically connected with the wire outlet copper bar 18 is particularly arranged in the wire outlet chamber 1-3, the wire outlet copper bar 18 is electrically connected with the grounding switch 12, the current transformer 6 is connected with the wire outlet copper bar 18, the lightning arrester 10 and the wire outlet cable terminal 9, and the wire outlet electrification display sensor 19 is arranged to play a role of insulating and supporting the wire outlet copper bar 18 on one hand and is used for detecting whether the wire outlet copper bar 18 is electrified on the other hand.

The instrument element is specifically as follows: the instrument elements in the secondary instrument room 1-5 comprise a secondary microcomputer protection device, a relay, a metering device, a measuring instrument, an illuminating lamp, an indicating lamp, an operation switch, a control switch and an electrified display, and the incoming line end electrified display sensor 17 and the outgoing line end electrified display sensor 19 are respectively connected with the corresponding electrified display.

In order to ensure the safety and reliability in the PT handcart room 1-4, the insulation covers 11 are arranged at the connection positions of the two ends of the fuse 15 and the contact arms of the metering voltage transformer 14 and the metering voltage handcart 13 respectively, so that the high-voltage isolation function is achieved, accidents such as inter-phase breakdown discharge and short circuit are prevented, and the safety and reliability of power supply are improved.

The top of the cabinet body 1 is provided with a pressure release channel 22 which is respectively communicated with the incoming line chamber 1-1, the circuit breaker handcart chamber 1-2, the outgoing line chamber 1-3 and the PT handcart chamber 1-4; as shown in fig. 1, the outlet chamber 1-3 at the lower left part is L-shaped, the vertical section at the upper end is located in the area between the inner wall at the left side of the cabinet body 1 and the suspension plate 21 at the left side of the inlet chamber 1-1, the upper end of the outlet chamber 1-3 is communicated with the first pressure release channel 22 at the left side of the top of the cabinet body 1, the inlet chamber 1-1 at the upper left part is communicated with the pressure release channel 22 at the middle part of the top of the cabinet body 1, the circuit breaker handcart chamber 1-2 at the upper right part is communicated with the pressure release channel 22 at the right side of the top of the cabinet body 1, and the PT handcart chamber 1-4 is communicated with the inlet chamber 1-1 through the PT handcart contact box 16, so that the PT handcart chamber 1-4 is subjected to pressure release through the inlet chamber 1-1;

The scheme can also expand the lower inlet and lower outlet of the cable, and can also be changed into the scheme of upper common box type bus bridge incoming line and upper cable inlet and upper cable outlet.

The scheme meets the requirements of 'five prevention' and safety, reliability, economy and practicability of the high-voltage switch equipment.

The setting of this technical scheme earthing switch 12 and double-deck handcart, when being convenient for operation maintenance, possess trade machinery electric "five proofings" shutting function, satisfy electrified demonstration, prevent condensation, measurement, protect function simultaneously, can be very big satisfy user's requirement function, satisfy security, reliability, economic nature, practicality requirement.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a put cabinet in nonstandard independent formula, includes cabinet body (1), its characterized in that: the inside of the cabinet body (1) is divided into an inlet wire chamber (1-1) at the upper left part, a circuit breaker handcart chamber (1-2) at the upper right part, an outlet wire chamber (1-3) at the lower left part and a PT handcart chamber (1-4) at the lower right part by a partition plate, the upper right part of the circuit breaker handcart chamber (1-2) is further divided into a secondary instrument chamber (1-5) by the partition plate, an upper circuit breaker contact box (4) and a high-voltage fuse (20) which are electrically connected with the lower end of an inlet wire copper bar (5) which is supported in the inside in an insulating manner are arranged in the inlet wire chamber (1-1), the high-voltage fuse (20) is connected with a voltage transformer (3) in the inlet wire chamber (1-1), an inlet wire cable terminal (2) which is led into the inside by the upper end of the inlet wire chamber (1-1) is connected with the upper end of the inlet wire copper bar (5), the secondary end of the voltage transformer (3) is electrically connected with an instrument element in the secondary instrument chamber (1-5) by the partition plate, and provides a required control element and an outlet wire copper bar (5) for the instrument element, a current transformer (12) in the circuit breaker contact box (1-1), a current transformer (12) and a lightning arrester (12), and current transformer (6) are connected with circuit breaker handcart (8) of installing in circuit breaker handcart room (1-2) through circuit breaker lower contact box (7), arrester (10) and earthing switch (12) and lead into its inside wire cable terminal (9) by wire outlet room (1-3) lower extreme and current transformer (6) output parallelly connected, be equipped with measurement voltage handcart (13) and fuse (15) and measurement voltage transformer (14) that are connected with fuse (15) on measurement voltage handcart (13) in PT handcart room (1-4), and fuse (15) are connected with circuit breaker lower contact box (7) through PT handcart contact box (16) that are located in wire outlet room (1-3) to provide the measurement voltage for the strapping table by measurement voltage transformer (14) under circuit breaker handcart (8) combined floodgate state.

2. The nonstandard independent centrally installed switchgear of claim 1, wherein: the wire inlet end copper bar (5) is supported in the wire inlet chamber (1-1) in an insulating manner through a wire inlet end live display sensor (17) fixed in the wire inlet chamber (1-1), and the wire inlet end copper bar (5) is electrically connected with the wire inlet end live display sensor (17).

3. The nonstandard independent centrally installed switchgear of claim 2, wherein: the live display sensor (19) is arranged in the outgoing line chamber (1-3) and used for supporting the outgoing line end copper bar (18) and electrically connected with the outgoing line end copper bar (18), the outgoing line end copper bar (18) is electrically connected with the grounding switch (12), and the current transformer (6) is connected with the outgoing line end copper bar (18), the lightning arrester (10) and the outgoing line cable terminal (9).

4. The nonstandard independent centrally installed switchgear of claim 3, wherein: the instrument elements in the secondary instrument room (1-5) comprise a secondary microcomputer protection device, a relay, a metering device, a measuring instrument, an illuminating lamp, an indicator lamp, an operation switch, a control switch and an electrified display, and the incoming line end electrified display sensor (17) and the outgoing line end electrified display sensor (19) are respectively connected with the corresponding electrified display.

5. The non-standard independent centrally installed switchgear according to any one of claims 1-4, wherein: and insulation covers (11) are arranged at the connection positions of the two ends of the fuse (15) and the contact arms of the metering voltage transformer (14) and the metering voltage handcart (13) respectively.

6. The nonstandard independent centrally installed switchgear of claim 5, wherein: the top of the cabinet body (1) is provided with a pressure release channel (22) which is respectively communicated with the incoming line chamber (1-1), the circuit breaker handcart chamber (1-2), the outgoing line chamber (1-3) and the PT handcart chamber (1-4).