CN211605667U

CN211605667U - Secondary locking circuit of grounding vehicle

Info

Publication number: CN211605667U
Application number: CN202020456017.9U
Authority: CN
Inventors: 丁宁
Original assignee: Liaoning Huaxin Switch Electric Appliance Co ltd
Current assignee: Liaoning Huaxin Switch Electric Appliance Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-09-29
Anticipated expiration: 2030-04-01

Abstract

The utility model discloses a ground connection car secondary blocking circuit, open, block with electromagnetic lock return circuit including the little generating line of secondary, the little sky of direct current, electric shutting, the just closed mother (+ HM) of the little generating line of secondary opens and closes mother (-HM) with the burden of the little generating line of locking electromagnetic lock return circuit of direct current and control secondary in proper order, circuit breaker auxiliary point and handcart electromagnetic lock cooperation shutting. The utility model discloses an adopt inlet wire cabinet, female cabinet circuit breaker auxiliary contact and female isolation cabinet position point shutting grounding handcart that allies oneself with, the grounding handcart can not close a floodgate with female cabinet circuit breaker that allies oneself with again shutting the inlet wire when operating position simultaneously, and female isolation cabinet handcart that allies oneself with can not wave, is showing and is improving the security performance.

Description

Secondary locking circuit of grounding vehicle

Technical Field

The utility model relates to a ground connection car secondary locking circuit.

Background

When a power user maintains a 10KV centrally installed switchgear, a grounding wire is usually additionally arranged on a primary main bus of the centrally installed switchgear for field construction safety, and the grounding wire is connected to a primary ground grid, but a 10KV centrally installed switchgear bus chamber is closed, so that the additional arrangement of the grounding wire is complicated and inconvenient.

Disclosure of Invention

The utility model aims to solve the technical problem that a ground connection car secondary blocking circuit that can solve above-mentioned problem.

The utility model discloses a realize through following technical scheme: a secondary locking circuit of a grounding vehicle comprises a secondary small bus, a direct-current small air switch, an electromagnetic lock loop for locking, an electric lock and a handcart electromagnetic lock, wherein the electric lock and the handcart electromagnetic lock are matched with each other at a circuit breaker auxiliary point and a position state point; and a positive closing bus (+ HM) of the secondary small bus is sequentially connected with a direct-current small-space opening and locking electromagnetic lock loop and a negative closing bus (-HM) for controlling the secondary small bus, and the auxiliary point of the circuit breaker is matched with the electromagnetic lock of the handcart to be locked.

As the preferred technical scheme, the system also comprises an incoming line cabinet, a bus coupler cabinet breaker auxiliary contact, a bus coupler cabinet position point and a grounding handcart, wherein the incoming line cabinet is locked when the grounding handcart is at a working position, and the incoming line cabinet and the bus coupler cabinet breaker cannot be switched on.

The utility model has the advantages that: the utility model discloses simple structure, through adopting inlet wire cabinet, female cabinet circuit breaker auxiliary contact and female isolation cabinet position point shutting grounding handcart, the grounding handcart can not close a floodgate with female cabinet circuit breaker of shutting again when the operating position simultaneously, female isolation cabinet handcart can not wave, is showing and is improving the security performance; the method plays an important role in preventing electrical misoperation of the transformer substation for a technical prevention measure of misoperation prevention.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 circuit diagram 1 of the present invention;

fig. 2 is a circuit diagram 2 of the present invention;

fig. 3 is a circuit diagram 3 of the present invention;

fig. 4 is a circuit diagram 4 of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 4, the device comprises a secondary small bus, a direct-current small air switch, an electromagnetic lock loop for locking, an electric lock with a breaker auxiliary point and a position state point matched with each other, and a handcart electromagnetic lock; and a positive closing bus (+ HM) of the secondary small bus is sequentially connected with a direct-current small-space opening and locking electromagnetic lock loop and a negative closing bus (-HM) for controlling the secondary small bus, and the auxiliary point of the circuit breaker is matched with the electromagnetic lock of the handcart to be locked.

The grounding handcart is locked by the aid of the auxiliary contacts of the incoming line cabinet, the bus coupler cabinet circuit breaker and the bus coupler isolation cabinet position points, the grounding handcart is locked when in a working position, the incoming line and the bus coupler cabinet circuit breaker cannot be switched on, and the bus coupler isolation cabinet handcart cannot be shaken.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a ground connection car secondary blocking circuit which characterized in that: the device comprises a secondary small bus, a direct-current small air switch, an electromagnetic lock loop for locking, an electric lock with a breaker auxiliary point and a position state point matched with each other, and a handcart electromagnetic lock; and a positive closing bus (+ HM) of the secondary small bus is sequentially connected with a direct-current small-space opening and locking electromagnetic lock loop and a negative closing bus (-HM) for controlling the secondary small bus, and the auxiliary point of the circuit breaker is matched with the electromagnetic lock of the handcart to be locked.

2. The secondary latching circuit of claim 1, wherein: the grounding handcart is characterized by further comprising an incoming cabinet, a bus coupler cabinet breaker auxiliary contact, a bus coupler cabinet position point and a grounding handcart, wherein the incoming cabinet is locked when the grounding handcart is in a working position, and the incoming cabinet and the bus coupler cabinet breaker cannot be switched on.