GIS equipment isolation grounding manual operation electromagnetic locking structure

Abstract

The utility model relates to a GIS equipment isolation grounding manual operation electromagnetic locking structure comprising a mounting sleeve located on a manual operation tool insertion path, and the mounting sleeve is sequentially provided with a locking switch assembly, a telescopic electromagnet and a microswitch CKB along the manual operation tool insertion direction. The locking switch assembly comprises a microswitch CKA and a microswitch CKC, and the trigger end of the microswitch CKB, the trigger end of the microswitch CKA, the trigger end of the microswitch CKC and a telescopic shaft of the telescopic electromagnet all extend to the moving path of the manual operation tool in the mounting sleeve. When the manual operation rod is inserted, the manual operation rod can automatically check whether the operation meets a five-prevention mechanism or not, a mechanism action loop is disconnected during manual operation, and the manual operation rod is simple in structure, high in reliability, low in cost, small in resistance and not prone to being burnt out due to heating; overall modularization of the electromagnetic locking structure can be achieved, universality is good, structure standardization of different products under different working conditions is achieved, and new equipment and old equipment can be additionally installed conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment, specifically refers to a GIS equipment isolated ground manual operation electromagnetic lock structure. BACKGROUND

[0002] In the power system, electrical operators usually need to operate step by step according to the five-prevention mechanism during electrical operation, if there is a misoperation during the operation process, it may cause damage to the equipment, power interruption, power loss, or even cause power grid accidents and personal injury accidents, which is very serious, has a great impact and serious consequences. In general, interlocking logic is added to the secondary circuit in GIS equipment to avoid such misoperations during operation. However, if the knife switch mechanism fails, such as motor burnout or transmission jam, manual operation is required to open and close the knife switch. However, since the manual operation position of the knife switch mechanism usually does not have a locking structure, manual misoperation cannot be avoided. Or the locking device structure is complex, manual unlocking is required, operation is difficult, and it is difficult to accurately determine whether the five-prevention mechanism is met. Or a rotating electromagnet is used, which is high in cost and has high resistance, and is easy to heat and burn out.

[0003] Therefore, it is necessary to design a locking structure for manual operation, so that the interlocking condition circuit is connected (that is, the five-prevention mechanism is met) and manual operation can be performed. And when manually operating, the mechanism action circuit is disconnected to prevent mechanical or electrical damage when manually operating the electrical circuit. UTILITY MODEL CONTENTS

[0004] The utility model provides a GIS equipment isolated ground manual operation electromagnetic lock structure in view of the deficiency of prior art, compact structure, modularization, standardization, simple operation, automatic check whether the operation meets the five-prevention mechanism when the manual operation lever is inserted, and uses a direct-acting electromagnet, which is low in cost and small in resistance and not easy to heat.

[0005] The utility model is realized through the following technical schemes, and provides a GIS equipment isolated ground manual operation electromagnetic lock structure, which comprises a mounting sleeve located on the insertion path of a manual operation tool. A locking switch assembly, a telescopic electromagnet and a micro switch CKB are sequentially arranged on the mounting sleeve along the insertion direction of the manual operation tool. The locking switch assembly comprises a micro switch CKA and a micro switch CKC. The trigger end of the micro switch CKB, the trigger end of the micro switch CKA, the trigger end of the micro switch CKC and the telescopic shaft of the telescopic electromagnet all extend to the movement path of the manual operation tool in the mounting sleeve.

[0006] As an optimization, the micro switch CKC is a normally closed switch and is connected in series with the mechanism action circuit.

[0007] As optimization, the telescopic electromagnet, the micro switch CKB and the micro switch CKA are connected in series with the interlocking condition loop, the micro switch CKB is a normally closed switch, and the micro switch CKA is a normally open switch.

[0008] As optimization, the micro switch CKB, the micro switch CKA and the micro switch CKC are connected with the mounting sleeve in a threaded mode.

[0009] As optimization, the micro switch CKA and the micro switch CKC are respectively arranged on two sides of the mounting sleeve.

[0010] As optimization, the telescopic electromagnet comprises an electromagnetic coil fixed outside the mounting sleeve, a moving iron core radially sliding on the mounting sleeve, and a reset spring for pushing the moving iron core to move towards the mounting sleeve.

[0011] As optimization, a coil mounting plate is bolted outside the mounting sleeve, and the electromagnetic coil is connected with the coil mounting plate through bolts.

[0012] The GIS device isolation grounding manual operation electromagnetic locking structure has the advantages that the manual operation tool can be automatically detected whether the interlocking condition is met when the manual operation tool is inserted, the interlocking condition needs to be met when the manual operation handle is inserted during manual operation, manual misoperation can be prevented, a direct-acting electromagnet is adopted, the structure is simple, the reliability is high, the cost is lower, the resistance is small, and the electromagnet is not easy to heat and burn out, the electromagnetic locking structure is modularized as a whole, has good universality, realizes structure standardization under different products and different working conditions, and is convenient for new and old equipment to be additionally installed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a front view of the utility model;

[0014] Figure 2 is a right view of the utility model;

[0015] Figure 3 is an electric circuit principle diagram of the utility model;

[0016] Figure 4 is an insertion schematic view of the manual operation tool under the interlocking condition;

[0017] Figure 5 is an insertion schematic view of the manual operation tool under the interlocking condition;

[0018] In the drawings:

[0019] 1, mounting sleeve, 2, micro switch CKA, 3, micro switch CKB, 4, micro switch CKC, 5, electromagnetic coil, 6, reset spring, 7, moving iron core, 8, coil mounting plate, 9, manual operation tool. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of the scheme, the scheme will be described below through specific embodiments.

[0021] As shown in Figures 1-5 The utility model discloses a GIS equipment isolated ground manual operation electromagnetic lock structure, including the installation sleeve 1 of being located on the insertion path of manual operation tool 9, the installation sleeve 1 fixed setting, the installation sleeve 1 can be set in the insertion hole front of manual operation tool 9, also can be the insertion hole original mechanism piece of manual operation tool 9. When using, manual operation tool 9 needs to insert installation sleeve 1 after can further insert inside and start to carry out manual switching operation.

[0022] The installation sleeve 1 is equipped with lock switch assembly, telescopic electromagnet and microswitch CKB3 in turn along the insertion direction of manual operation tool 9, the lock switch assembly includes microswitch CKA2 and microswitch CKC4, the trigger end of microswitch CKB3, the trigger end of microswitch CKA2, the trigger end of microswitch CKC4 and the telescopic shaft of telescopic electromagnet all extend to the movement path of manual operation tool 9 in installation sleeve 1.

[0023] Microswitch CKA2 and microswitch CKC4 are installed on the both sides of installation sleeve 1 respectively, thereby reducing the forward stroke of manual operation tool 9, make compact structure.

[0024] When manual operation tool 9 inserts installation sleeve 1, first pass through microswitch CKA2 and microswitch CKC4, then pass through telescopic electromagnet, finally pass through microswitch CKB3. Telescopic electromagnet is retracted under the energized state, allows manual operation tool 9 to insert, and manual operation tool 9 cannot continue to insert under the insertion of installation sleeve 1 in the de-energized state of telescopic electromagnet.

[0025] Microswitch CKB3, microswitch CKA2 and microswitch CKC4 are all in threaded connection with installation sleeve 1, so that the screwing depth can be adjusted.

[0026] The telescopic electromagnet includes the electromagnetic coil 5 fixed on the outside of installation sleeve 1, the movable core 7 radially slidingly connected on installation sleeve 1 and the reset spring 6 for pushing the movable core 7 to move into installation sleeve 1. The coil mounting plate 8 is bolted to the outside of the installation sleeve 1, and the electromagnetic coil 5 is connected to the coil mounting plate 8 by bolts.

[0027] When the electromagnetic coil 5 is energized, the movable core 7 is retracted backward by magnetic force, and when the electromagnetic coil 5 is de-energized, the movable core 7 is pushed inward into the installation sleeve 1 by the reset spring 6.

[0028] The micro switch CKC4 is a normally closed switch and is connected in series with the mechanism action circuit.

[0029] The telescopic electromagnet, the micro switch CKB3 and the micro switch CKA2 are all connected in series with the interlocking condition circuit, the micro switch CKB3 is a normally closed switch, and the micro switch CKA2 is a normally open switch. Therefore, when the manual operating tool 9 is not inserted, because the micro switch CKA2 is a normally open switch, the whole circuit is disconnected, and the telescopic electromagnet cannot be powered, when the manual operating tool 9 is inserted and triggers the micro switch CKA2, the whole circuit is connected, and the telescopic electromagnet is powered, so that the manual operating tool 9 can continue to be inserted, when the manual operating tool 9 triggers the micro switch CKB3, the whole circuit is disconnected, so that the telescopic electromagnet is powered off, preventing long-term power-on from causing failure.

[0030] The use method of the utility model discloses:

[0031] When the micro switch CKB3, the micro switch CKA2 and the micro switch CKC4 are screwed into the mounting sleeve 1, the screwing depth needs to be ensured, too deep screwing depth may cause the manual operating tool 9 to be stuck by the micro switch compression column when being inserted, and the manual operating tool 9 cannot be smoothly inserted, too shallow screwing depth may cause the manual operating tool 9 to be unable to reliably compress the micro switch compression column, so that the micro switch contact is not switched.

[0032] When manual operation is needed for the isolation grounding knife switch mechanism, the manual operating tool 9 is inserted into the center hole of the mounting sleeve 1, and the micro switch CKA2 and the micro switch CKC4 are compressed first, because the micro switch CKC4 is a normally closed switch and is connected in series with the mechanism action circuit, the CKC4 contact disconnects the mechanism action circuit, preventing the electrical circuit from starting when manually operating from causing mechanical injury or electrical injury.

[0033] At the same time, the CKA2 contact is connected, if the operation meets the interlocking condition, the interlocking condition circuit is connected, because the micro switch CKB3 has not been triggered and is in a normally closed state, therefore Figure 2 The circuit in the formula (1) is connected, the telescopic electromagnet is powered on, the moving iron core 7 is attracted and leaves the position of the center hole of the mounting sleeve 1, the manual operating tool 9 can continue to be inserted and compress the micro switch CKB3, the normally closed contact of the micro switch CKB3 is disconnected, so that the telescopic electromagnet is powered off, preventing the telescopic electromagnet from being powered on for a long time and causing failure, and the manual operating tool 9 continues to be inserted and starts manual opening and closing operation.

[0034] If the interlocking condition is not satisfied, the interlocking condition loop is open, the telescopic electromagnet cannot be electrified, the moving iron core is always blocked in the center hole of the mounting sleeve, the manual operating tool 9 cannot continue to be inserted, and misoperation is prevented.

[0035] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model. The utility model has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model and should also belong to the protection scope of the claims of the utility model.

Claims

1. A GIS device isolation ground manual operation electromagnetic latching structure, characterized in that: The installation sleeve (1) is located in the insertion path of the manual operating tool (9), and the installation sleeve (1) is sequentially provided with a locking switch assembly, a telescopic electromagnet and a micro switch CKB (3) in the insertion direction of the manual operating tool (9), the locking switch assembly comprises a micro switch CKA (2) and a micro switch CKB (4), and the triggering end of the micro switch CKB (3), the triggering end of the micro switch CKA (2), the triggering end of the micro switch CKB (4) and the telescopic shaft of the telescopic electromagnet all extend to the movement path of the manual operating tool (9) in the installation sleeve (1).

2. The GIS device isolated ground manual operating electromagnetic lock structure according to claim 1, characterized in that: The micro switch CKB (4) is a normally closed switch and is connected in series with the mechanism action circuit.

3. The GIS device isolated ground manual operating electromagnetic latching structure according to claim 1, characterized in that: The telescopic electromagnet, the micro switch CKB (3) and the micro switch CKA (2) are all connected in series with the interlocking condition circuit, the micro switch CKB (3) is a normally closed switch, and the micro switch CKA (2) is a normally open switch.

4. The GIS device isolated ground manual operating electromagnetic lock structure according to claim 1, characterized in that: The micro switch CKB (3), the micro switch CKA (2) and the micro switch CKB (4) are all threadedly connected with the installation sleeve (1).

5. The GIS device isolated ground manual operating electromagnetic latching structure according to claim 1, characterized in that: The micro switch CKA (2) and the micro switch CKB (4) are respectively arranged on the two sides of the installation sleeve (1).

6. The GIS device isolated ground manual operating electromagnetic latching structure according to claim 1, characterized in that: The telescopic electromagnet comprises an electromagnetic coil (5) fixed to the outer side of the installation sleeve (1), a moving iron core (7) radially slidingly connected with the installation sleeve (1) and a reset spring (6) for pushing the moving iron core (7) to move into the installation sleeve (1).

7. The GIS device isolated ground manual operating electromagnetic latching structure according to claim 6, characterized in that: The outer side of the installation sleeve (1) is boltedly connected with a coil mounting plate (8), and the electromagnetic coil (5) is connected with the coil mounting plate (8) through bolts.

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