CN214898155U

CN214898155U - Electromagnetic locking device for isolating switch

Info

Publication number: CN214898155U
Application number: CN202121551856.XU
Authority: CN
Inventors: 孙亚辉
Original assignee: Maintenance Branch of State Grid Fujian Electric Power Co Ltd
Current assignee: Maintenance Branch of State Grid Fujian Electric Power Co Ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-11-26
Anticipated expiration: 2031-07-08

Abstract

The utility model relates to an electromagnetic locking device for an isolating switch, belonging to the technical field of power system equipment, comprising an electromagnetic switch component, wherein the electromagnetic switch component comprises an upper shell and a lower shell which are detachably connected and mutually communicated from top to bottom, and also comprises an armature device and a coil device; the armature device comprises an armature body, the top end of the armature body movably extends out of the upper shell and is connected with a threaded sleeve, the bottom end of the armature body extends into the lower shell, the end part of the armature body is fixedly connected with a fixed piece, the armature body is sequentially sleeved with an upper contact piece and a lower contact piece in a sliding mode from top to bottom, and the lower contact piece is detachably fixed at the top end of the lower shell; an upper spring is arranged between the upper contact piece and the lower contact piece, and a lower spring is arranged between the lower contact piece and the fixed piece. The utility model relates to an integral type structure, the installation is dismantled simply, and is effectual to the control of the epaxial shutting dog of motor output, and the security is high.

Description

Electromagnetic locking device for isolating switch

Technical Field

The utility model relates to an electromagnetism blocking device for isolator belongs to power system equipment technical field.

Background

In order to prevent the situation that an isolating switch of GIS equipment automatically opens at a switch-on position or automatically closes at a switch-off position, a locking stop block is arranged on an output shaft of a motor, the locking stop block is controlled by driving a microswitch to act through an electromagnet, the start and stop of the motor are controlled through an auxiliary contact of the microswitch, and the electromagnet and the microswitch are two mutually independent components.

Because the electromagnet and the microswitch are two mutually independent components, the installation quality and the matching requirement between the electromagnet and the microswitch are strict, and particularly, the speed of the electromagnet for driving the microswitch to act and the gap between the driving parts of the electromagnet and the microswitch are strictly controlled. In the actual production, the accidents of abnormal opening and motor burnout caused by improper matching of the electromagnet and the microswitch occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome current electro-magnet and micro-gap switch and to install shortcomings such as the quality requirement height, electro-magnet and micro-gap switch cooperation easy production trouble, the utility model discloses an electromagnetism blocking device for isolator, its formula structure as an organic whole, the installation is dismantled simply, and is effectual to the control of the epaxial shutting dog of motor output, and the security is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electromagnetic locking device for an isolating switch comprises an electromagnetic switch assembly, an armature device and a coil device, wherein the electromagnetic switch assembly comprises an upper shell and a lower shell which are detachably connected from top to bottom and are mutually communicated; the armature device comprises an armature body arranged in the upper shell, the top end of the armature body movably extends out of the upper shell and is connected with a threaded sleeve, the bottom end of the armature body extends into the lower shell, the end part of the armature body is fixedly connected with a fixing piece, the armature body is sequentially sleeved with an upper contact piece and a lower contact piece in a sliding manner from top to bottom, and the lower contact piece is detachably fixed at the top end of the lower shell; an upper spring is arranged between the upper contact piece and the lower contact piece, and a lower spring is arranged between the lower contact piece and the fixed piece; the upper contact sheet and the lower contact sheet are fixed on the opposite surface of the upper contact sheet and the lower contact sheet, each pair of upper contacts is electrically connected through an insulated wire, the lower contact sheet is provided with a plurality of pairs of lower contacts corresponding to the plurality of pairs of upper contacts, and each lower contact is electrically connected with the motor control loop through an insulated wire.

Furthermore, the lower shell is a cylinder which is hollow inside and is provided with an opening at the top end, and the upper shell is a cylinder which is hollow inside and is provided with openings at two ends.

Further, the bottom end of the upper shell is provided with an annular groove.

Further, still including the cassette that is used for fixed electromagnetic switch subassembly, the cassette is including fixing on isolator backplate and fixing on the backplate and have the annular elasticity of breach and detain, and annular elasticity detains in the annular groove on last casing, and annular elasticity detains the bottom and still is provided with the elasticity flange of fixing on the backplate.

Further, the coil device comprises an iron core detachably fixed at the bottom end of the lower shell and a conductive coil wound on the iron core, and the conductive coil is electrically connected with the motor control loop.

Furthermore, four upper contacts arranged in an annular array are fixed on the upper contact sheet, and two pairs of upper contacts at opposite corners are electrically connected through insulated wires.

Further, the threaded sleeve is in threaded connection with the armature body.

Further, a locking screw for locking the screw sleeve is arranged on the outer side of the screw sleeve.

Furthermore, the upper spring and the lower spring are sleeved outside the armature body.

Further, the iron core bottom mounting has the fixed plate, and the fixed plate passes through screw detachable with lower casing bottom and is connected.

Compared with the prior art the utility model discloses there are following characteristics and beneficial effect:

the utility model discloses a setting of electromagnetic switch subassembly, make the armature device and the coil assembly integration setting of control shutting dog, resume or remove the armature body to the stopping of shutting dog through the upper and lower slip of coil assembly control armature body, the cooperation is more high-efficient, and control is more perfect, can solve the fault problem that leads to because of to the installation quality high among the prior art well; through the arrangement of the upper contact piece and the lower contact piece, the upper contact and the lower contact are connected in series, so that the motor can be ensured to operate only after the upper contact and the lower contact are closed, the safety of the starting process of the motor is ensured, and meanwhile, the blocking of the armature body to the locking stop block can be more accurately relieved or recovered; through the arrangement of the threaded sleeve, the threaded sleeve can be rotated to adjust the blocking height of the armature body to the locking stop block, so that the blocking failure caused by overlong or overlong short armature body is avoided; the clamping seat is detachably connected with the electromagnetic switch assembly, the clamping seat is tightly hooped in the annular groove of the upper shell through the annular elastic buckle so as to fix the electromagnetic switch assembly, the lower shell can be well propped by the elastic convex plate, so that the fixation is more stable, the annular elastic buckle is prevented from being broken due to overlarge stress, the electromagnetic switch assembly can be dismounted at any time after being damaged, and the maintenance and the replacement are convenient; through the setting of locking screw, can fix the swivel nut better, prevent that the swivel nut from deviating from.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the electromagnetic switch assembly in a latched state;

FIG. 3 is a schematic view of the insert in contact with the upper contact pad;

FIG. 4 is a schematic view of the electromagnetic switch assembly in an unlatched condition;

fig. 5 is a schematic structural diagram of the upper housing of the present invention;

fig. 6 is a schematic structural view of the lower housing of the present invention;

fig. 7 is a schematic structural view of the armature device of the present invention;

fig. 8 is a schematic structural diagram of the coil device of the present invention;

fig. 9 is a front view of the cartridge of the present invention;

figure 10 is a side view of the cartridge of the present invention;

fig. 11 is a circuit diagram of a motor control loop.

Wherein the reference numerals are:

1. an electromagnetic switch assembly; 11. a lower housing; 12. an upper housing; 121. an annular groove; 13. an armature device; 131. an armature body; 132. a threaded sleeve; 1321. locking the screw; 133. an upper contact pad; 134. a lower contact pad; 135. a fixing sheet; 136. an upper spring; 137. a lower spring; 138. an upper contact; 139. a lower contact; 14. a coil device; 141. an iron core; 142. a fixing plate; 143. a conductive coil; 2. a card holder; 21. a back plate; 211. mounting holes; 22. an annular elastic buckle; 23. an elastic convex plate.

Detailed Description

The present invention will be described in more detail with reference to the following examples.

As shown in fig. 1 to 10, the electromagnetic locking device for an isolating switch of the present embodiment includes an electromagnetic switch assembly 1 and a card seat 2 for fixing the electromagnetic switch assembly 1, the electromagnetic switch assembly 1 includes an upper housing 12 and a lower housing 11 detachably connected from top to bottom, and further includes an armature device 13 and a coil device 14, the lower housing 11 is a cylinder with a hollow interior and an open top, the upper housing 12 is a cylinder with a hollow interior and two open ends, and an annular groove 121 is disposed at the bottom end of the upper housing 12;

the armature device 13 comprises an armature body 131 arranged inside the upper shell 12, the top end of the armature body 131 extends out of the upper shell 12 and is connected with a threaded sleeve 132 in a threaded manner, the bottom end of the armature body 131 extends out of the upper shell 12 and extends into the lower shell 11, the end part of the armature body 131 is fixedly connected with a fixing piece 135, the armature body 131 is sequentially sleeved with an upper contact piece 133 and a lower contact piece 134 in a sliding manner from top to bottom, and the lower contact piece 134 is detachably fixed at the top end of the lower shell 11; an upper spring 136 is arranged between the upper contact sheet 133 and the lower contact sheet 134, and a lower spring 137 is arranged between the lower contact sheet 134 and the fixing sheet 135; four upper contacts 138 arranged in an annular array are fixed on one surface of the upper contact sheet 133 opposite to the lower contact sheet 134, two pairs of upper contacts 138 at diagonal positions on the upper contact sheet 133 are electrically connected through an insulated wire, two pairs of lower contacts 139 which correspond to the two pairs of upper contacts 138 electrically connected and are arranged in an annular array are arranged on the lower contact sheet 134, each pair of lower contacts 139 at diagonal positions are electrically connected through an insulated wire, and each pair of lower contacts 139 on the lower contact sheet 134 are electrically connected to the lower shell 11 through an insulated wire and then are electrically connected with a motor control loop through an insulated wire;

the coil device 14 includes a core 141 fixed to the bottom end of the lower case 11 and a conductive coil 143 wound around the core 141, and the conductive coil 143 is electrically connected to the motor control circuit.

In particular, the distance between the upper contact piece 133 and the top end face of the upper housing 12 when the armature body 131 is in the closed state is greater than the distance between the top end of the threaded sleeve 132 and the top end face of the upper housing 12 when the threaded sleeve 132 just contacts the upper contact piece 133, so that the upper contact 138 and the lower contact 139 can be contacted and closed to start the motor with electricity.

Further, the card seat 2 includes a rectangular back plate 21 fixed on the isolating switch and an annular elastic buckle 22 fixed on the back plate 21 and having a notch, the annular elastic buckle 22 is clamped in the annular groove 121 on the upper housing 12, and an elastic convex plate 23 fixed on the back plate 21 is further arranged at the bottom end of the annular elastic buckle 22.

Specifically, four mounting holes 211 are formed in the back plate 21, and the back plate 21 is fixed in the disconnecting switch mechanism by four screws.

Further, a locking screw 1321 for locking the screw boss 132 is provided outside the screw boss 132.

Further, the upper spring 136 and the lower spring 137 are both sleeved outside the armature body 131.

Further, a fixing plate 142 is fixed to a bottom end of the iron core 141, and the fixing plate 142 is detachably connected to a bottom end of the lower case 11 by a screw.

In particular, the method for assembling the electromagnetic locking device for the isolating switch specifically comprises the following steps:

s1: placing the assembled coil device 14 into the lower shell 11, fixing the fixing plate 142 at the bottom end of the lower shell 11 through a screw, and then leading out two ends of the conductive coil 143 to be electrically connected with a motor control loop;

s2: placing the assembled armature device 13 on the upper end surface of the lower shell 11, and fixing the lower contact piece 134 on the top end of the lower shell 11 through a screw;

s3: sleeving the upper shell 12 outside the armature device 13, locking the upper shell 12 and the lower shell 11 through screws, and after the upper shell 12 and the lower shell 11 are locked, leaving an annular groove 121 on the upper shell 12 to complete the assembly of the electromagnetic switch component 1;

s4: fix the cassette 2 on the corresponding position in the isolator mechanism through the screw, fill in annular groove 121 of electromagnetic switch subassembly 1 in the breach of annular elastic buckle 22 again and make annular groove 121 joint to annular elastic buckle 22 in, the bulge of joint in-process elasticity flange 23 withstands electromagnetic switch subassembly 1's lower casing 11, cooperates the joint effect of annular elastic buckle 22 to fix electromagnetic switch subassembly 1.

In the in-service use, what play the shutting effect is electromagnetic switch subassembly 1, so cassette 2 is difficult to damage, so when electromagnetic switch subassembly 1 damage the back, directly extract electromagnetic switch subassembly 1 from cassette 2 and change can again, the installation is dismantled all very conveniently, does not need complicated fixed mode, has improved work efficiency.

The utility model discloses a theory of operation: as shown in fig. 2 to 4, after the conductive coil 143 is electrically excited, the armature body 131 is attracted to move downward, the lower spring 137 is stretched, when the armature moves to a certain position, the threaded sleeve 132 contacts with the upper contact piece 133, then the armature body 131 continues to move downward, the upper contact piece 133 is pressed to move downward, the upper spring 136 is compressed, finally, the upper contact 138 on the upper contact piece 133 is in contact conduction with the lower contact 139 on the corresponding position of the lower contact piece 134, and at this time, the threaded sleeve 132 enters the interior of the upper housing 12 to release the locked state;

when the conductive coil 143 is de-energized and excited, the adsorption effect on the armature body 131 is lost, the armature body 131 moves upward under the action of the lower spring 137, the upper contact piece 133 moves upward under the action of the upper spring 136 and is gradually disconnected from the lower contact piece 134, and meanwhile, the threaded sleeve 132 also moves upward and is gradually separated from the upper contact piece 133, penetrates through the top opening of the upper shell 12, and the initial locking state is recovered.

In the actual control process, when the disconnecting switch is at the opening (or closing) position, a locking stop block (not shown) on an output shaft of a motor of the disconnecting switch is blocked by a threaded sleeve 132 of the electromagnetic switch assembly 1, and the motor cannot rotate, so that the disconnecting switch is always kept at the opening (or closing) position;

as shown in fig. 11, when the closing (or opening) operation of the disconnecting switch is required, after the motor control loop meets the starting condition, the conductive coil 143 (for convenience, indicated by Y in the control loop) is electrified and excited, the armature body 131 moves downward, the screw sleeve 132 also moves downward and enters the inside of the upper shell 12, the locking of the locking stop block is released, and meanwhile, in the process, two corresponding pairs of upper and lower contacts 138 and 139 (for convenience, indicated by Q1 and Q2 in the control loop) are closed, the motor is electrified and excited, and the motor starts to rotate;

when the closing (or opening) operation of the disconnecting switch is finished, the conductive coil 143 (i.e., Y in fig. 11) and the motor power supply are disconnected by a control contact (not shown), the conductive coil 143 (i.e., Y in fig. 11) and the motor lose power, the motor stops operating, the armature body 131 moves upward under the action of the lower spring 137, the two corresponding pairs of upper and lower contacts 138 and 139 (i.e., Q1 and Q2 in fig. 11) are disconnected, the screw sleeve 132 also moves upward, extends out of the upper housing 12, and blocks the blocking stopper again, so that the motor cannot rotate, and the disconnecting switch is always kept at the closing (or opening) position.

The utility model discloses control mode has utilized the double contact Q1, the Q2 series connection of the device self, and the guarantee is known and is removed shutting back motor and could move, has further improved the stability and the security of control.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; 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 according to specific situations by those skilled in the art.

It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. 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.

Claims

1. An electromagnetic latching device for a disconnector, characterized in that: the electromagnetic switch assembly comprises an electromagnetic switch assembly (1), wherein the electromagnetic switch assembly (1) comprises an upper shell (12) and a lower shell (11) which are detachably connected from top to bottom and are mutually communicated, and further comprises an armature device (13) and a coil device (14) which is electrically connected with a motor control loop and is used for adsorbing the armature device (13), wherein the coil device (14) is arranged below the armature device (13); the armature device (13) comprises an armature body (131) arranged in the upper shell (12), the top end of the armature body (131) movably extends out of the upper shell (12) and then is connected with a threaded sleeve (132), the bottom end of the armature body (131) extends into the lower shell (11) and is fixedly connected with a fixing piece (135) at the end part, the armature body (131) is sequentially sleeved with an upper contact piece (133) and a lower contact piece (134) in a sliding mode from top to bottom, and the lower contact piece (134) is detachably fixed at the top end of the lower shell (11); an upper spring (136) is arranged between the upper contact sheet (133) and the lower contact sheet (134), and a lower spring (137) is arranged between the lower contact sheet (134) and the fixing sheet (135); a plurality of pairs of upper contacts (138) are fixed on the opposite surface of the upper contact sheet (133) and the lower contact sheet (134), each pair of upper contacts (138) are electrically connected through an insulated wire, a plurality of pairs of lower contacts (139) corresponding to the plurality of pairs of upper contacts (138) are arranged on the lower contact sheet (134), and each pair of lower contacts (139) are electrically connected with the motor control loop through an insulated wire.

2. An electromagnetic latching device for a disconnector according to claim 1, characterized in that: the lower shell (11) is a cylinder which is hollow inside and is provided with an opening at the top end, and the upper shell (12) is a cylinder which is hollow inside and is provided with openings at two ends.

3. An electromagnetic latching device for a disconnector according to claim 2, characterized in that: an annular groove (121) is arranged at the bottom end of the upper shell (12).

4. An electromagnetic latching device for a disconnector according to claim 3, characterized in that: still including cassette (2) that are used for fixed electromagnetic switch subassembly (1), cassette (2) are including being used for fixing backplate (21) in isolator mechanism and fixing on backplate (21) and have annular elasticity of breach and detain (22), and annular elasticity detains (22) joint in annular groove (121) on last casing (12), and annular elasticity detains (22) bottom and still is provided with elasticity convex plate (23) of fixing on backplate (21).

5. An electromagnetic latching device for a disconnector according to claim 2, characterized in that: the coil device (14) comprises an iron core (141) detachably fixed at the bottom end of the lower shell (11) and a conductive coil (143) wound on the iron core (141), and the conductive coil (143) is electrically connected with the motor control loop.

6. An electromagnetic latching device for a disconnector according to claim 1, characterized in that: four upper contacts (138) arranged in an annular array are fixed on the upper contact sheet (133), and two pairs of upper contacts (138) at opposite corners are electrically connected through insulated wires.

7. An electromagnetic latching device for a disconnector according to claim 1, characterized in that: the screw sleeve (132) is in threaded connection with the armature body (131).

8. An electromagnetic latching device for a disconnector according to claim 7, characterized in that: and a locking screw (1321) for locking the screw sleeve (132) is arranged on the outer side of the screw sleeve (132).

9. An electromagnetic latching device for a disconnector according to claim 1, characterized in that: the upper spring (136) and the lower spring (137) are sleeved outside the armature body (131).

10. An electromagnetic latching device for a disconnector according to claim 2, characterized in that: the bottom end of the iron core (141) is fixed with a fixing plate (142), and the fixing plate (142) is detachably connected with the bottom end of the lower shell (11) through a screw.