Anti-misoperation structure of grounding device of medium-voltage switch cabinet

Abstract

The utility model relates to the technical field of medium-voltage switch cabinets, and discloses an anti-misoperation structure of a grounding device of a medium-voltage switch cabinet, which comprises a fixed clamping ring, a connecting assembly movably mounted at one end of the fixed clamping ring, a universal slipknot fixedly mounted at one end of the connecting assembly, and a handcart blocking assembly movably mounted at one end of a stop block transmission assembly. The model number of a medium-voltage switch cabinet is KYN28-12, the fixing ring clamp is installed on a driving main shaft of a matched grounding JN15 of the switch cabinet, when the grounding device carries out switching-on operation, the fixing ring clamp rotates along with the grounding device, pushes the connecting long rod and pushes the inserting rod and the installation block to move through the universal slipknot, then the downwards-concave type stop block is vertically arranged to prevent a circuit breaker handcart from entering, and otherwise, the fixing ring clamp rotates along with the grounding device to push the inserting rod and the installation block to move through the universal slipknot. The fixing ring clamp rotates reversely, the connecting long rod is pulled, the inserting rod and the mounting block are driven through the universal slipknot, the concave stop block is horizontally arranged, a circuit breaker handcart can pass through the concave stop block, the thickness of the concave stop block is increased, a circuit breaker chassis can be effectively and directly blocked, and the circuit breaker is prevented from mistakenly transmitting power to a grounded switch cabinet.

Description

TECHNICAL FIELD

[0001] The utility model relates to medium voltage switch cabinet technical field, concretely is medium voltage switch cabinet grounding device prevents false structure. BACKGROUND

[0002] Medium voltage switch cabinet is mainly composed of cabinet and circuit breaker two parts, usually switch cabinet has overhead incoming and outgoing line, cable incoming and outgoing line, bus tie and so on, is used in power plant power transmission, electric power system and industrial and mining enterprise substation power receiving, distribution, switch cabinet can satisfy the requirement of GB3906, DL404, IEC-298 and so on, and has the " five -proof " function such as preventing false operation circuit breaker, preventing load push -and -pull handcart, preventing live closing proximity switch, preventing proximity switch when sending power in grounding position and preventing false entry live interval.

[0003] At present, switch cabinet has " prevent proximity switch when sending power in grounding position " device, and this false prevention is through the pressing down of grounding knife switch operating window's baffle, and the blocking piece of right side of switch cabinet is linked.When the circuit breaker handcart is pushed into " power transmission " position from " test " position, the right side angle iron of handcart chassis is prevented by blocking rod and prevents the circuit breaker handcart from being pushed into in the grounding device closing state, and in fact, since the blocking piece is designed to be small (thickness is about 5mm), the blocking ability is limited. It is easy to be deformed by impact, resulting in that the handcart chassis mechanism can continuously shake in, the handcart is sent into " work " position, and loses " prevent proximity switch when sending power in grounding position " function.

[0004] Therefore, the utility model provides a medium voltage switch cabinet grounding device false prevention structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a medium voltage switch cabinet grounding device false prevention structure to solve the above problems.

[0006] In order to realize the above object, the utility model provides the following technical scheme: a medium voltage switch cabinet grounding device false prevention structure, including fixed ring card, one end of the fixed ring card swing installation has the connecting component, one end of connecting component fixed mounting has universal slipknot, one end of universal slipknot swing installation has the fender block transmission component, one end of fender block transmission component swing installation has the handcart blocking component, and handcart blocking component and voice reminding system carry out electric connection.

[0007] Further, the connecting assembly comprises a connecting long rod and a hollow ring fixedly installed at one end of the connecting long rod, one end of the hollow ring is provided with a threaded pin, and one end of the threaded pin is provided with a fixing nut.

[0008] Further, the block transmission assembly comprises a square base and a T-shaped connecting block fixedly installed at one side of the upper end of the square base, and long pull rods are movably installed at both sides of one end of the outer wall of the T-shaped connecting block through movable shafts.

[0009] Further, the handcart blocking assembly comprises an insertion rod and a mounting block fixedly installed at one end of the insertion rod.

[0010] Further, one end of the mounting block is movably provided with a connecting shaft in the middle, and lower concave blocks are movably installed at both ends of the connecting shaft.

[0011] Further, the voice reminding system comprises a control circuit board module, a grounding device, a proximity switch, a grounding device auxiliary contact and a loudspeaker.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1, the model of the medium voltage switch cabinet is KYN28-12, the fixed ring clamp 1 is installed on the drive main shaft of the matched grounding JN15 of the switch cabinet, when the grounding device carries out the closing operation, the fixed ring clamp rotates, pushes the connecting long rod, moves the insertion rod and the mounting block through the universal slip knot, then the lower concave blocks are vertically arranged, the circuit breaker handcart is prevented from entering, on the contrary, the fixed ring clamp reversely rotates, pulls the connecting long rod, drives the insertion rod and the mounting block through the universal slip knot, and the lower concave blocks are horizontally arranged, so that the circuit breaker handcart can pass through, the thickness of the lower concave blocks is increased, the circuit breaker chassis can be directly blocked, and the circuit breaker is prevented from being misoperated to send power to the switch cabinet that has been grounded.

[0014] 2, the voice reminding system is composed of a proximity switch, a grounding device auxiliary contact, a loudspeaker and a control circuit board module, wherein the control circuit board module is powered by the direct current system of the switch cabinet, when the grounding device is not closed or the lower concave blocks are horizontally arranged, the loudspeaker does not sound, when the grounding device is in the closing state, the proximity switch and the grounding device auxiliary contact constitute the AND logic judgment, when the grounding device auxiliary contact is closed and the circuit breaker handcart moves to the inside of the switch cabinet, the control circuit board module acts, drives the loudspeaker to remind "the grounding switch is closed, and the handcart operation is prohibited", the operator is reminded through the voice, and the misoperation is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a connecting assembly three-dimensional structure schematic view of the utility model;

[0017] Figure 3 It is the block transmission assembly and the handcart blocking assembly three-dimensional structure schematic view of the utility model.

[0018] Figure 4 It is the voice reminding system three-dimensional structure schematic view.

[0019] In the drawing: 1, fixed ring card; 2, connecting assembly; 21, connecting long rod; 22, hollow ring; 23, threaded peg; 24, fixed nut; 3, universal slipknot; 4, block transmission assembly; 41, square base; 42, T-shaped connecting block; 43, long pull rod; 5, handcart blocking assembly; 51, insertion rod; 52, mounting block; 53, connecting shaft; 54, lower concave block; 6, voice reminding system; 61, control circuit board module; 62, grounding device; 63, proximity switch; 64, grounding device auxiliary contact; 65, loudspeaker. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment one: please refer to Figures 1-3 A kind of medium voltage switchgear grounding device prevents false structure, including fixed ring card 1, one end of fixed ring card 1 movably installs connecting assembly 2, one end of connecting assembly 2 fixedly installs universal slipknot 3, one end of universal slipknot 3 movably installs block transmission assembly 4, one end of block transmission assembly 4 movably installs handcart blocking assembly 5, handcart blocking assembly 5 and voice reminding system 6 are electrically connected.

[0022] Connecting assembly 2 includes connecting long rod 21 and hollow ring 22 fixedly installed at one end of connecting long rod 21, one end of hollow ring 22 passes through installation and is provided with threaded peg 23, one end of threaded peg 23 is threadedly connected with fixed nut 24.

[0023] Block transmission assembly 4 includes square base 41 and T-shaped connecting block 42 fixedly installed at one side of upper end of square base 41, long pull rod 43 is movably installed at both sides of one end of the outer wall of T-shaped connecting block 42 by movable shaft.

[0024] Handcart blocking assembly 5 includes insertion rod 51 and mounting block 52 fixedly installed at one end of insertion rod 51, connecting shaft 53 is movably installed at one end of the middle of mounting block 52, lower concave block 54 is movably installed at both ends of connecting shaft 53.

[0025] In the embodiment: the model of the medium voltage switch cabinet is KYN28-12, the fixed ring card 1 is installed on the drive main shaft of the matched grounding JN15 of the switch cabinet, when the grounding device 62 performs closing operation, the fixed ring card 1 rotates, pushes the connecting long rod 21, moves the insertion rod 51 and the mounting block 52 through the universal slip 3, then the lower concave block 54 is vertically arranged, which prevents the circuit breaker trolley from entering, on the contrary, the fixed ring card 1 rotates reversely, pulls the connecting long rod 21, drives the insertion rod 51 and the mounting block 52 through the universal slip 3, and the lower concave block 54 is horizontally arranged, so that the circuit breaker trolley can pass, the thickness of the lower concave block 54 is increased, which can effectively directly block the circuit breaker bottom plate and prevent the circuit breaker from being mistakenly powered to the grounded switch cabinet.

[0026] Embodiment two: the embodiment is improved on the basis of embodiment one, and details are shown in Figure 4 The voice reminding system 6 includes a control circuit board module 61, a grounding device 62, a proximity switch 63, a grounding device auxiliary contact 64 and a loudspeaker 65.

[0027] In the embodiment: the voice reminding system 6 is composed of the proximity switch 63, the grounding device auxiliary contact 64, the loudspeaker 65 and the control circuit board module 61, wherein the control circuit board module 61 is powered by the direct current system of the switch cabinet, when the grounding device 62 is not closed or the lower concave block 54 is horizontally arranged, the loudspeaker 65 does not sound; when the grounding device 62 is in the closed state, the proximity switch 63 and the grounding device auxiliary contact 64 constitute an AND logic judgment, when the grounding device auxiliary contact 64 is closed and the circuit breaker trolley moves to the inside of the switch cabinet, the control circuit board module 61 module acts, drives the loudspeaker 65 to remind that the grounding switch is closed, and the trolley operation is prohibited, which reminds the operator through voice, so as to prevent misoperation.

[0028] Working principle: the model of the medium voltage switch cabinet is KYN28-12, the fixed ring card 1 is installed on the drive main shaft of the matched grounding JN15 of the switch cabinet, when the grounding device 62 performs closing operation, the fixed ring card 1 rotates, pushes the connecting long rod 21, moves the insertion rod 51 and the mounting block 52 through the universal slip knot 3, then the lower concave block 54 is erected, the circuit breaker trolley is hindered to enter, on the contrary, the fixed ring card 1 rotates reversely, pulls the connecting long rod 21, drives the insertion rod 51 and the mounting block 52 through the universal slip knot 3, the lower concave block 54 is placed, the circuit breaker trolley can pass, the voice reminding system 6 is composed of the proximity switch 63, the grounding device auxiliary contact 64, the loudspeaker 65 and the control circuit board module 61, wherein the control circuit board module 61 is powered by the switch cabinet direct current system, when the grounding device 62 is not closed, or the lower concave block 54 is placed, the loudspeaker 65 does not sound; when the grounding device 62 is in the closed state, the proximity switch 63 and the grounding device auxiliary contact 64 constitute the "and" logic judgment, when the grounding device auxiliary contact 64 is closed and the circuit breaker trolley moves to the inside of the switch cabinet, the control circuit board module 61 module acts, drives the loudspeaker 65 to remind that "the grounding knife switch has been closed, the trolley operation is prohibited", to prevent misoperation.

[0029] The contents not described in detail in the specification belong to the prior art known to the person skilled in the art.

[0030] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A medium voltage switch cabinet grounding device anti-error structure, comprising a fixed ring clamp (1), characterized in that: One end of the fixed ring clamp (1) is movably mounted with a connecting assembly (2), one end of the connecting assembly (2) is fixedly mounted with a universal slipknot (3), one end of the universal slipknot (3) is movably mounted with a block transmission assembly (4), one end of the block transmission assembly (4) is movably mounted with a trolley blocking assembly (5), and the trolley blocking assembly (5) is electrically connected to the voice reminder system (6).

2. The anti-error structure of the grounding device of a medium voltage switch cabinet according to claim 1, characterized in that: The connecting assembly (2) comprises a connecting rod (21) and a hollow ring (22) fixedly mounted on one end of the connecting rod (21); a threaded nail (23) is installed through one end of the hollow ring (22); and a fixing nut (24) is threadedly connected to one end of the threaded nail (23).

3. The anti-error structure of the grounding device of a medium voltage switch cabinet according to claim 2, characterized in that: The block transmission assembly (4) comprises a square base (41) and a T-shaped connecting block (42) fixedly mounted on one side of the upper end of the square base (41); long pull rods (43) are movably mounted on both sides of one end of the outer wall of the T-shaped connecting block (42) via a movable shaft.

4. The anti-error structure of the grounding device of a medium voltage switch cabinet according to claim 3, characterized in that: The trolley blocking assembly (5) comprises an insertion rod (51) and a mounting block (52) fixedly mounted on one end of the insertion rod (51).

5. The anti-error structure of the grounding device of a medium voltage switch cabinet according to claim 4, characterized in that: A connecting shaft (53) is movably mounted in the middle of one end of the mounting block (52), and concave stoppers (54) are movably mounted at both ends of the connecting shaft (53).

6. The anti-error structure of the grounding device of a medium voltage switch cabinet according to claim 5, characterized in that: The voice reminder system (6) comprises a control circuit board module (61), a grounding device (62), a proximity switch (63), a grounding device auxiliary contact (64), and a speaker (65).

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