CN206505846U - A kind of interlock for improving latching electromagnet service life in switch cubicle - Google Patents

A kind of interlock for improving latching electromagnet service life in switch cubicle Download PDF

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Publication number
CN206505846U
CN206505846U CN201720182281.6U CN201720182281U CN206505846U CN 206505846 U CN206505846 U CN 206505846U CN 201720182281 U CN201720182281 U CN 201720182281U CN 206505846 U CN206505846 U CN 206505846U
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CN
China
Prior art keywords
switch
latching electromagnet
guide rod
pressing plate
interlock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201720182281.6U
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Chinese (zh)
Inventor
胡德兆
朱国基
马如海
曹锦滨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Baiyun Electric Equipment Co Ltd
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Guangzhou Baiyun Electric Equipment Co Ltd
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Filing date
Publication date
Application filed by Guangzhou Baiyun Electric Equipment Co Ltd filed Critical Guangzhou Baiyun Electric Equipment Co Ltd
Priority to CN201720182281.6U priority Critical patent/CN206505846U/en
Application granted granted Critical
Publication of CN206505846U publication Critical patent/CN206505846U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of interlock for improving latching electromagnet service life in switch cubicle, earthed switch, latching electromagnet and auxiliary switch are set in switch cubicle, the gathering hole of earthed switch is provided with cabinet face, the vertical pressing plate that can slide up and down is additionally provided with switch cubicle, gathering hole is sealed when sliding thereon;Latching electromagnet is controlled above and below vertical pressing plate, and auxiliary switch is connected on the power supply circuit of latching electromagnet, and when the primary circuit of switch cubicle is powered, auxiliary switch is off;When the primary circuit of the switch cubicle is not charged, auxiliary switch is in closure state;Interlock includes a microswitch being connected on the power supply circuit of the latching electromagnet, its pressing plate control break-make vertical by can slide up and down.The utility model is simple in construction, and efficiently solves the problem of latching electromagnet in the case of switch cubicle is uncharged is long-term powered.

Description

A kind of interlock for improving latching electromagnet service life in switch cubicle
Technical field
The utility model is related to the interlock in high pressure armoured removable type alternating, particularly relates to And a kind of interlock for improving latching electromagnet service life in switch cubicle.
Technical background
Required according to standard GB/T 3906-2006,3.6kV-40.5kV switch cubicles all should meet five anti-interlock requirements, Wherein it is to prevent powered conjunction earthed switch (hanging earthing conductor).3.6kV-40.5kV switch cabinet grounding switch is mainly used in In line cabinet scheme, when needing maintenance cable vault, earthed switch should be closed a floodgate, it is ensured that line side powers off and realizes safety ground, Ensure maintainer's personal safety.And there is a kind of situation to be noted that i.e. when outlet cabinet breaker disconnects, artificial thinks whole Individual transmission line circuit is not charged.But outgoing line side carries a variety of loads, it is understood that there may be the anti-situation powered.So it should be ensured that line Trackside does not have electric ability closed ground switch.Existing way is:Increase latching electromagnet in earthing switch operating mechanism.This is closed The powered display sensor formation of electromagnet and outgoing line side is locked to interlock, when detect outgoing line side it is powered when, latching electromagnet must not electricity. Now it is unable to operational grounding switch combined floodgate.It is another when detect outgoing line side it is not charged when, latching electromagnet obtains electric.It can now operate Earthed switch closes a floodgate.In conventional substation, it is understood that there may be many outgoing line cabinets are in stand-by state, now standby outgoing line cabinet circuit Side is not charged, and latching electromagnet is in long-term charging operation, causes latching electromagnet coil to burn out, ultimately results in ground connection Switch can not carry out closing operation, there is potential safety hazard.
Utility model content
Technical problem to be solved in the utility model, is just to provide one kind and can improve latching electromagnet in switch cubicle and use The interlock in life-span, its is simple in construction, and efficiently solves the long-term band of latching electromagnet in the case of switch cubicle is uncharged Electric the problem of.
Above-mentioned technical problem is solved, the technical solution adopted in the utility model is as follows:
Ground connection is set in a kind of interlock for improving latching electromagnet service life in switch cubicle, described switch cubicle to open It is provided with to be additionally provided with the gathering hole of earthed switch, switch cubicle on pass, latching electromagnet and auxiliary switch, cabinet face and can slide up and down Vertical pressing plate, gathering hole is sealed when sliding thereon;Described latching electromagnet is limited above and below vertical pressing plate, auxiliary switch series connection On the power supply circuit of latching electromagnet, when the primary circuit of the switch cubicle is powered, auxiliary switch is off;When When the primary circuit of the switch cubicle is not charged, auxiliary switch is in closure state;
It is characterized in that, the interlock includes:
One is connected on the microswitch on the power supply circuit of the latching electromagnet, its pressure vertical by can slide up and down Plate controls break-make.
Described interlock concrete structure includes:
One mounting bracket, is vertically fixed on the switch cubicle, and it is provided with two horizontal bending edges, two horizontal bending edges up and down On be provided with up and down corresponding through hole;
One guide rod, upper end is provided with spring limiting board, is interspersed in vertically in the through hole on horizontal bending edges, and its upper end is located at upper The top of the horizontal bending edges in face, the lower section for the horizontal bending edges that lower end is located below;
One spring, is placed on guide rod, and between spring limiting board and horizontal bending edges above, it is provided for guide rod Upward elastic force;
Described microswitch, is fixed on below guide rod, and the lower end of its triggering end and guide rod keeps certain triggering distance, When guide rod push stroke be more than or equal to triggering apart from when, the triggering end in contact of guide rod and microswitch, now microswitch In closure state;
The lower surface of the pressing plate is pressed on the upper surface of spring limiting board, and the iron core of the stretching of latching electromagnet is located at pressing plate Lower surface underface, the upper surface of iron core upper surface and spring limiting board keeps certain contact distance, and contact distance is big In triggering distance;
One end of auxiliary switch is connected with power sourced electric, and one end electrical connection of its other end and microswitch, fine motion is opened The other end of pass and one end of latching electromagnet are electrically connected, and the other end of latching electromagnet is connected with power sourced electric.
The spring limiting board lower surface is fixed with connecting screw rod, and guide rod upper surface is provided with screw thread corresponding with connecting screw rod Blind hole, connecting screw rod is twisted in, so as to which spring limiting board be fixed, being also screwed with connecting screw rod is used for the company of locking in tapped blind hole The nut of screw rod is connect, nut is located between spring limiting board and guide rod upper surface.
The interlock is additionally provided with normally closed switch, normally closed switch connect latching electromagnet loop in, when ground connection is opened Close in when opening a sluice gate state, normally closed switch is in closure state, when earthed switch is in "on" position, normally closed switch is in disconnected Open state.
The top of the pressing plate, which is provided with, is easy to the horizontal flanging that operated clamp is slided up and down.
Compared with prior art, the utility model has the advantages that:
The utility model is only when microswitch and auxiliary switch are in closure state simultaneously, and latching electromagnet is just in "on" position, therefore, even if the primary circuit of switch cubicle is in without electricity condition, also only when depressing pressing plate, locking electromagnetism Iron is just powered so that latching electromagnet will not be chronically at electriferous state, improves the service life of latching electromagnet.For example: When being provided with switch cubicle of the present utility model and being used as backup circuit breaker cabinet, switch cubicle is in long-term not charged, and now auxiliary is opened Close and be in long-term closure state, due to provided with microswitch, so that avoiding latching electromagnet is in long-term electriferous state.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the assembling structure schematic diagram of guide rod of the present utility model and spring limiting board;
Fig. 3 is the utility model and pressing plate and the assembly relation schematic diagram of latching electromagnet;
Fig. 4 is one of assembly relation schematic diagram of the utility model and switch cubicle;
Fig. 5 is the two of the assembly relation schematic diagram of the utility model and switch cubicle, and display microswitch is in closure state, Iron core is retracted latching electromagnet;
Fig. 6 is electrical schematic diagram of the present utility model;
Fig. 7 is the three of the assembly relation schematic diagram of the utility model and switch cubicle.
Reference implication in figure:
1- springs;The horizontal bending edges of 2-;3- guide rods;4- mounting brackets;5- microswitches;6- spring limiting boards;7- nuts; 8- latching electromagnets;The horizontal flanging of 9-;10- pressing plates;11- iron cores;12- connecting screw rods;13- tapped blind holes;14- gathering holes;15- Operation axis;16- earthed switches;19- auxiliary switches;20- triggers distance;21- contacts distance.
Embodiment
The utility model is further described with reference to embodiment.
As shown in Figure 6, Figure 7, earthed switch 16, latching electromagnet 8, auxiliary switch 19, the and of pressing plate 10 are provided with switch cubicle Interlock;The gathering hole 14 of earthed switch is provided with the cabinet face of switch cubicle, pressing plate 10, which can slide up and down, to be vertically installed on out Close on cabinet, when sliding thereon, top seals gathering hole 14, be provided with the top of pressing plate 10 and be easy to the level that operated clamp is slided up and down Flanging 9;When the primary circuit for detecting switch cubicle is powered, auxiliary switch 19 is off;When detecting switch cubicle When primary circuit is not charged, auxiliary switch 19 is in closure state.Switch cubicle detects whether primary circuit is powered by sensor, So as to control the closed and disconnected of auxiliary switch 19, the technology is existing technology.Interlock is installed in the one of switch cubicle Sideways, the lower section of the gathering hole and positioned at earthed switch.
As shown in Figure 1, Figure 2, a kind of shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 improves latching electromagnet service life in switch cubicle Interlock, it includes mounting bracket 4, guide rod 3, spring 1, microswitch 5.
Mounting bracket 4 is vertically fixed on switch cubicle, and it is opened provided with above and below on two horizontal bending edges 2, two horizontal bending edges 2 There is corresponding through hole up and down.Guide rod 3 is a round bar, and its upper end is provided with spring limiting board 6, and lower end is sophisticated, under spring limiting board 6 Surface is fixed with connecting screw rod 12, and the upper surface of guide rod 3 is provided with tapped blind hole 13 corresponding with connecting screw rod 12, and connecting screw rod 12 is twisted So that spring limiting board 6 be fixed in tapped blind hole 13, the spiral shell for locking connecting screw rod is also screwed with connecting screw rod 12 Mother 7, nut 7 is located between spring limiting board 6 and the upper surface of guide rod 3.During installation, connecting screw rod 12 is screwed to correct position, then Down turn nut 7, until nut 7 withstands the upper end face of guide rod 3 and tightened, so that connecting screw rod 12 be locked.Guide rod 3 is successively It is interspersed on through hole, its upper end top of horizontal bending edges 2 located above, the lower section of horizontal bending edges 2 that lower end is located below is led Bar 3 is in plumbness, and can slide up and down.Spring 1 is placed on guide rod 3, and positioned at spring limiting board 6 and level above It is that guide rod 3 provides upward elastic force between bending edges 2.
The fixed microswitch 5 below guide rod 3, the triggering end of microswitch 5 keeps certain with the lower end of guide rod 3 and touched Distance 20 is sent out, when guide rod 3 is when pushing stroke more than or equal to triggering distance 20, the triggering of guide rod 3 and microswitch 5 is terminated Touch, now microswitch 5 is in closure state.
The lower end of pressing plate 10 is pressed on the upper surface of spring limiting board 6, so as to form linkage, when pressing pressing plate 10, simultaneously Also guide rod 3 is pressed.The iron core 11 of the stretching of latching electromagnet 8 is located at the underface of the lower surface of pressing plate 10, and iron core 11 is stretching out State can block pressing plate 10 and push, but not block spring limiting board 6, the upper surface of iron core 11 and the upper surface of spring limiting board 6 Certain contact distance 21 is kept, contact distance 21 is more than triggering distance 20.When latching electromagnet 8 is in off-position, close The iron core 11 for locking electromagnet 8 is stretching state, and iron core 11 will block pressing plate 10 and push, and is only in and is powered in latching electromagnet 8 During state, pressing plate 10 can just continue to press down, so as to open the gathering hole 14 of earthed switch.
Electrical schematic diagram as shown in Figure 6, one end of auxiliary switch 19 is connected with power sourced electric, and its other end is opened with fine motion The one end for closing 5 is electrically connected, and the other end of microswitch 5 is electrically connected with one end of latching electromagnet 8, latching electromagnet 8 The other end is connected with power sourced electric.
Contact distance 21 needs to be more than the reason for triggering distance 20:In order to which pressing plate 10 is during pushing, in pressing plate 10 Lower surface touch before the iron core 11 of latching electromagnet, the triggering end in contact that the lower end of guide rod 3 can first with microswitch 5 is micro- Dynamic switch 5 is first closed.This ensure that when the primary circuit of switch cubicle is not charged, pressing plate 10 is pushed, in the lower end of pressing plate 10 Face is not touched also before the iron core 11 of latching electromagnet 8, and microswitch 5 is first closed, and latching electromagnet 8 is powered, and iron core 11 is retracted Lock in electromagnet 8, pressing plate 10 can smoothly continue to push.
Contact distance 21 and triggering distance 20 all need to select suitable size, and optimal selection is to push one in pressing plate 10 During segment, the lower end of guide rod 3 is the triggering end in contact with microswitch 5, is more convenient so in practical operation.
, can be by adjusting the depth that connecting screw rod 12 is screwed into tapped blind hole 13 in installation process of the present utility model It is shallow, so as to adjust the size of triggering distance 20.Nut 7 causes connecting screw rod 12 and the connection of tapped blind hole 13 not to use one Loosening is produced after the section time, so as to change the size of triggering distance 20.
In maintenance, now the primary circuit of switch cubicle is not charged, and auxiliary switch 8 is in closure state, need to be to switch cubicle Earthed switch 16 closed a floodgate, needed before being closed a floodgate to earthed switch 16 depress pressing plate 10, during pressing plate 10 is pushed, lead The triggering end in contact of bar 3 first with microswitch 5, microswitch 5 is closed first, and latching electromagnet 8 is powered, the retraction lock electricity of iron core 11 In magnet 8, continue to push pressing plate 10 so that gathering hole 14 is opened completely, earthed switch operation rocking bar is stretched into from gathering hole 14, and The operating side of the operation axis 15 of earthed switch 16 is inserted in, earthed switch operation rocking bar is rotated, so that earthed switch 16 closes a floodgate, When earthed switch 16 is in "on" position, pressing plate 10 is to be in locking state, will not up resilience, gathering hole 14 is constantly in Full open position.
In general, the time overhauled to switch cubicle is all shorter, so earthed switch 16 is in combined floodgate shape The time of state is also shorter, and for more preferable protection blocking electromagnet 8, can also set up normally closed switch, normally closed switch series connection In the loop for entering latching electromagnet, normally closed switch is associated with earthed switch.It is normally closed to open when earthed switch 16, which is in, opens a sluice gate state Close and be in closure state, can now connect latching electromagnet 8;When earthed switch 16 is in "on" position, at normally closed switch In off-state, now latching electromagnet 8 will power-off.Normally closed switch preferably extends the service life of latching electromagnet, often Make and break is closed and not showed in the diagram.
The utility model can operate with the switch cubicle of the cabinet type of switch with ground.

Claims (5)

1. in a kind of interlock for improving latching electromagnet service life in switch cubicle, described switch cubicle ground connection is set to open Close, latching electromagnet and auxiliary switch, be provided with cabinet face on the gathering hole of the earthed switch, the switch cubicle be additionally provided with can on The vertical pressing plate of lower slider, the gathering hole is sealed when sliding thereon;The described vertical pressing plate of latching electromagnet limitation Up and down, the auxiliary switch is connected on the power supply circuit of the latching electromagnet, when the primary circuit of the switch cubicle is powered When, the auxiliary switch is off;When the primary circuit of the switch cubicle is not charged, the auxiliary switch is in and closed Conjunction state;Characterized in that, the interlock includes:One fine motion being connected on the power supply circuit of the latching electromagnet is opened Close, its pressing plate control break-make vertical by can slide up and down.
2. interlock according to claim 1, it is characterised in that:The interlock concrete structure includes:
One mounting bracket, is vertically fixed on the switch cubicle, and it is opened provided with above and below on two horizontal bending edges, two horizontal bending edges There is corresponding through hole up and down;
One guide rod, upper end is provided with spring limiting board, is interspersed in vertically in the through hole on the horizontal bending edges, and its upper end is located at upper The top of the horizontal bending edges in face, the lower section for the horizontal bending edges that lower end is located below;
One spring, is placed on guide rod, and between the spring limiting board and horizontal bending edges above, it is described Guide rod provides upward elastic force;
Described microswitch, is fixed on below the guide rod, and its triggering end and the lower end of the guide rod keep certain triggering Distance, when the guide rod push stroke be more than or equal to the triggering apart from when, the guide rod and the microswitch are touched Originator contact, now the microswitch is in closure state;
The lower surface of the pressing plate is pressed on the upper surface of the spring limiting board, and the iron core of the stretching of the latching electromagnet is located at The underface of the lower surface of the pressing plate, the iron core upper surface keeps certain contact with the upper surface of the spring limiting board Distance, the contact distance is more than the triggering distance;
One end of the auxiliary switch is connected with power sourced electric, and one end of its other end and the microswitch is electrically connected, institute One end of the other end and the latching electromagnet of stating microswitch is electrically connected, the other end and power supply of the latching electromagnet Electrical connection.
3. interlock according to claim 2, it is characterised in that:The spring limiting board lower surface is fixed with connection spiral shell Bar, the guide rod upper surface is provided with tapped blind hole corresponding with the connecting screw rod, and the connecting screw rod is twisted blind in the screw thread So as to which the spring limiting board be fixed in hole, the spiral shell for locking the connecting screw rod is also screwed with the connecting screw rod Mother, the nut is located between the spring limiting board and the guide rod upper surface.
4. the interlock according to claims 1 to 3 any one, it is characterised in that:The interlock is additionally provided with often Make and break close, the normally closed switch connect the latching electromagnet loop in, when the earthed switch be in open a sluice gate state when, The normally closed switch is in closure state, when the earthed switch is in "on" position, and the normally closed switch, which is in, disconnects shape State.
5. interlock according to claim 4, it is characterised in that:The top of the pressing plate, which is provided with, to be easy to operate the pressure The horizontal flanging that plate is slided up and down.
CN201720182281.6U 2017-02-28 2017-02-28 A kind of interlock for improving latching electromagnet service life in switch cubicle Withdrawn - After Issue CN206505846U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720182281.6U CN206505846U (en) 2017-02-28 2017-02-28 A kind of interlock for improving latching electromagnet service life in switch cubicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720182281.6U CN206505846U (en) 2017-02-28 2017-02-28 A kind of interlock for improving latching electromagnet service life in switch cubicle

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CN206505846U true CN206505846U (en) 2017-09-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106876192A (en) * 2017-02-28 2017-06-20 广州白云电器设备股份有限公司 A kind of interlock for improving latching electromagnet service life in switch cubicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106876192A (en) * 2017-02-28 2017-06-20 广州白云电器设备股份有限公司 A kind of interlock for improving latching electromagnet service life in switch cubicle

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Granted publication date: 20170919

Effective date of abandoning: 20190712