CN205845821U - A panel interlocking device for combined electrical appliances - Google Patents

Abstract

The utility model relates to an interlocking device, in particular to a panel interlocking device for combined electric appliances, which belongs to the technical field of electrical equipment. The structure of the utility model includes an operation panel located on the side of the operating mechanism of the combined electrical appliance, an interlocking plate attached to the operating panel is provided between the operating panel and the operating mechanism, and an interlocking operation pin is placed on the interlocking plate; The surface of the operation panel is provided with a grounding switch operating hole, an isolating switch operating hole, an interlocking operation pin, a programmed operation instruction, and a load switch operating hole from bottom to top. The grounding switch corresponds to the grounding bushing, and the isolating switch corresponds to the isolation The shaft sleeve, the grounding shaft sleeve and the isolation shaft sleeve are all welded to the operation panel and its manual mechanism, and the side of the interlocking plate is provided with an isolating switch conversion microswitch assembled by the fixing plate. The beneficial effects of the utility model are: complete elimination of misoperation, high safety performance, small operating power and no mechanical damage.

Description

A panel interlocking device for combined electrical appliances

technical field

The utility model relates to an interlocking device, in particular to a panel interlocking device for combined electric appliances, which belongs to the technical field of electrical equipment.

Background technique

Vacuum load switch and fuse combined electrical appliance is a combined switchgear that is controlled by a load switch and protected by a fuse. Installed on the other side, the combined electrical appliance is divided into two independent units, namely the isolating switch part and the load switch part. Installed in the box transformer, the high-voltage room can be divided into the cable room and the load switch fuse room, so that the isolation fracture and the fuse In different intervals, when the isolation is opened, it can ensure safe fuse replacement, which is convenient for replacing the fuse of a load switch without affecting the operation of other units. The structural form and operation and maintenance conditions of this equipment require that it must have a complete and reliable "five-defense" interlock to prevent safety accidents caused by misuse. However, the current interlock device cannot meet the "five-defense" interlock requirements.

Utility model content

The purpose of this utility model is: aiming at the problems existing in the above-mentioned prior art, a panel interlocking device for combined electrical appliances is proposed, which is novel in design, easy to operate and use, small in operation power without mechanical damage, and completely prevents misoperation.

In order to achieve the above purpose, the structure of the present utility model includes a panel interlocking device for a combined electric appliance, including an operation panel located on the side of the operating mechanism of the combined electric appliance, and a joint that is attached to the operation panel is provided between the operation panel and the operating mechanism. Locking plate, the interlocking plate is equipped with an interlocking operation pin, and the displacement of the operating pin is controlled by an electromagnetic lock assembled on the panel; the surface of the operating panel is provided with a grounding switch operating hole and an isolating switch operating hole in sequence from bottom to top , interlocking operation pin, programmed operation instruction and load switch operation hole, the grounding switch corresponds to the grounding bushing, the isolating switch corresponds to the isolating bushing, the grounding bushing and the isolating bushing are welded to the operation panel and its manual mechanism, the operating panel and load switch operating shaft are cylindrical structures, one end is connected to the corresponding operating mechanism, and the other end is provided with a long waist hole, so that it can be opened and closed by the operating handle when it is not blocked by the interlocking plate ; The side of the interlocking plate is provided with an isolating switch changeover micro switch assembled by the fixing plate. Only after the isolating switch is closed, the interlock plate can slide down and press the micro switch to change from normally open to normally closed, the load switch closing circuit is connected, and the load switch can be electrically closed.

Further, the interlocking plate is made of stainless steel. By moving up and down, the operating hole of one of the load switch, isolating switch or grounding switch is located at the interlocking operation pin hole of the operation panel. The interlocking operation pin hole is provided with a vertical The four positions, the four positions are position one, the position of opening and closing the front door, position two, the position of operating the grounding switch, position three, the position of operating the isolating switch and position four, the position of operating the load switch, and then can make it through the operating handle The corresponding mechanism opens and closes.

The programmed operation instructions include sequence instructions and location instructions for power transmission operations and power failure operations, including opening and closing instructions for isolating switches, grounding switches, and load switches, and related warning operations.

The cylindrical pin is fixed on the operation panel, so that it can indicate its opening and closing state through the screen printing instructions on the panel. The cylindrical pin is mechanically interlocked with the interlocking plate. When the mechanism is not in the specified state, the stainless steel interlocking plate Cannot slide.

In the interlocking device of the present invention, when the power is off, the interlocking operation pin is located at position four, and only the hole of the load switch operating shaft is exposed on the operation panel. The point becomes a normally closed point, and the load switch closing circuit is connected.

When the load switch is opened, the operating shaft of the load switch rotates counterclockwise, driving the interlock plate of the load switch indication plate to rotate upward, and the interlock operation pin drives the interlock plate to move upward to position 3, and only the isolation sleeve operation panel is exposed on the operation panel The isolating switch mechanism is activated by operating the isolating switch operating panel; when the interlocking operation pin drives the interlocking plate upward to leave the operation panel position 4, the interlocking plate does not press the isolating switch to convert the micro switch, and the micro switch is normally closed The point becomes a normally open point, and the closing circuit of the load switch is not connected.

When the isolating switch is opened, the cylindrical pin on the operating panel of the isolating bushing rotates counterclockwise from the close position to the open position, and there is no power on the outlet side, the electromagnetic lock is powered on or manually unlocked, and the interlock operation pin drives the interlock plate upward. Move to position 2, only the hole of the grounding sleeve operation panel is exposed on the operation panel, and the grounding switch is activated by operating the operation panel of the grounding switch.

When the grounding switch is opened, the cylindrical pin on the operation panel of the grounding sleeve rotates counterclockwise from the closed position to the divided position, and the interlock operation pin drives the interlock plate to move upward to position one, and the interlock plate avoids the interlock board panel, and the cabinet door opens. The interlocking plate clamping plate is an L-shaped plate with notches installed on the cabinet door.

The beneficial effects of the utility model are: the opening and closing sequence of the isolating switch, the load switch, and the grounding switch are guaranteed by reliable electrical and mechanical interlocking procedures, so that it has a complete and reliable "five-proof" interlocking, completely eliminating misoperation and safety performance. High; and the utility model has the characteristics of low production cost, convenient operation and use, simple and easy-to-understand programmed operation instructions, small operation work and no mechanical damage.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Fig. 2 is a left side view of Fig. 1 .

detailed description

Embodiment one

The structure of this embodiment is shown in Figures 1 and 2. A panel interlocking device for combined electrical appliances includes an operating panel 1 located on the side of the operating mechanism of the combined electrical appliance. The interlocking plate 8 is connected, and the interlocking operation pin 3 linked with it is placed on the interlocking plate 8. The displacement of the operating pin 3 is controlled by the electromagnetic lock 4 assembled on the panel; Hole, operating hole of isolating switch, interlocking operation pin, programmed operation instruction 9 and operating hole of load switch, grounding switch corresponds to grounding bushing, isolating switch corresponds to isolating bushing, grounding bushing welding operation panel 7 and its manual mechanism, isolation The shaft sleeve welding operation panel 5 and its manual mechanism, the operation panel and the load switch operation shaft are all cylindrical structures, one end is connected with the corresponding operating mechanism, and the other end is provided with a long waist hole; the side of the interlocking plate 8 is provided with The isolating switch assembled through the fixed plate converts the micro switch 6. Only after the isolating switch is closed, the interlock plate can slide down and press the micro switch to change from normally open to normally closed, the load switch closing circuit is connected, and the load switch can be electrically closed. The interlocking plate is made of stainless steel. By moving up and down, the operating hole of one of the load switch, isolating switch or grounding switch is located at the interlocking operation pin hole of the operation panel. The interlocking operation pin hole is provided with four vertical positions, four The positions are position 1, the position of opening and closing the front door, position 2, the position of operating the grounding switch, position 3, the position of operating the isolation switch and position 4, the position of operating the load switch, and then the corresponding mechanism can be opened and closed by operating the handle. The programmed operation instructions include sequence instructions and location instructions for power transmission operations and power failure operations, including opening and closing instructions for isolating switches, grounding switches, and load switches, and related warning operations. The cylindrical pin is fixed on the operation panel, so that its opening and closing status can be indicated by the screen printing instructions on the panel. The cylindrical pin is mechanically interlocked with the interlocking plate. When the mechanism is not in the specified state, the stainless steel interlocking plate cannot slide.

When the power fails, the interlock operation pin 3 is located at position 4 of the operation panel 1. At this time, only the hole of the load switch operation shaft 2 on the interlock plate 8 is aligned with the hole on the operation panel 1, that is, only the load switch operation is exposed on the operation panel 1. The hole of axis 2 can only operate the load switch to operate axis 2 at this time, and the load switch mechanism can be operated manually; at this time, the interlock plate 8 presses the isolating switch conversion micro switch 6 installed on the panel to make the isolating switch changeover micro switch Switch 6 changes from the normally open point to the normally closed point, the load switch closing circuit is connected, and the load switch can also be electrically closed; only when the load switch is opened, the load switch operating shaft rotates counterclockwise, driving the load switch indicator to interlock Plate 10 rotates upwards, does not block interlocking plate 8, and only at this moment interlocking operation pin 3 can drive interlocking plate 8 to move upwards to position three, only can expose the hole of isolating axle sleeve welding operation plate 5 on the operation panel 1, here When the isolating switch operating panel 5 can only be operated to make the isolating switch mechanism act; when the interlocking operation pin 3 drives the interlocking plate 8 upward to leave the operation panel position 4, the interlocking plate 8 does not press the isolating switch to convert the micro switch 6, so that The isolating switch conversion microswitch 6 changes from a normally closed point to a normally open point, the load switch closing circuit is not connected, and the load switch cannot be electrically closed.

Only when the isolating switch is opened and the cylindrical pin welded on the welding operation panel of the isolating bushing rotates counterclockwise from the closed position to the divided position, and there is no electricity on the outlet side, the secondary side on the cabinet energizes the electromagnetic lock 4 to make the electromagnetic lock Unlock, or manually use the electromagnetic lock key to unlock the electromagnetic lock, only then the interlock operation pin 3 can drive the interlock plate 8 to move upward to the operation panel position 2, and only the grounding sleeve welding operation panel 7 can be exposed on the operation panel 1 hole, at this time only the grounding switch operation panel 7 can be operated to make the grounding switch act;

Only when the grounding switch is opened and the cylindrical pin welded on the grounding sleeve welding operation panel rotates counterclockwise from the close position to the open position, only then the interlock operation pin 3 can drive the interlock plate 8 to move upward to position 1, and the joint Lock plate 8 just can avoid the L-shaped plate that is used to block the notch of interlocking plate 8 on the cabinet door, just can open cabinet door maintenance.

On the contrary, the interlocking principle of the power transmission operation is the same as that of the power failure operation.

The programmed operation instructions 9 screen-printed on the operation panel 1 detail the power transmission and power failure operation sequence and position indication, including the indication of the isolating switch, the grounding switch and the load switch switching device and related warning operations, which are easy to understand and make the operation intuitive understanding.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (10)

1. A panel interlocking device for a combined electric appliance, comprising an operating panel positioned at the side of the operating mechanism of the combined electric appliance, characterized in that: an interlocking plate attached to the operating panel is provided between the operating panel and the operating mechanism, and the The interlocking operation pin is placed on the interlocking plate, and the displacement of the operation pin is controlled by the electromagnetic lock assembled on the panel; the surface of the operation panel is provided with the grounding switch operation hole, the isolating switch operation hole, and the interlocking operation pin in sequence from bottom to top. , programmed operation instructions and load switch operating holes, the grounding switch corresponds to the grounding bushing, the isolating switch corresponds to the isolating bushing, the grounding bushing and the isolating bushing are welded to the operation panel and its manual mechanism, the operation Both the disc and the operating shaft of the load switch are cylindrical structures, one end is connected with the corresponding operating mechanism, and the other end is provided with a long waist hole; the side of the interlocking plate is provided with a micro switch for isolating switch assembled by the fixing plate. 2. The panel interlocking device for combined electrical appliances according to claim 1, characterized in that: the interlocking plate is made of stainless steel, and the operating hole of one of the load switch, isolating switch or grounding switch is located at the joint of the operating panel by moving up and down. Lock operating pin hole. 3. The panel interlocking device for combined electrical appliances according to claim 2, characterized in that: the interlocking operation pin hole is provided with four vertical positions, and the four positions are position 1, opening and closing the front door position, Position 2, the position of operating the grounding switch, position 3, the position of operating the isolation switch and position 4, the position of operating the load switch. 4. The panel interlocking device for combined electrical appliances according to claim 1, characterized in that: the programmed operation instructions include sequence instructions and position instructions for power transmission operations and power failure operations, including opening and closing of isolating switches, grounding switches, and load switches. Instructions and related warning actions. 5 . The panel interlocking device for combined electrical appliances according to claim 1 , wherein a cylindrical pin is fixed on the operation panel, and the cylindrical pin is mechanically interlocked with the interlocking plate. 6. The panel interlocking device for combined electrical appliances according to claim 1, characterized in that: when the interlocking device is in a power failure state, the interlocking operation pin is located at position four, and only the hole of the load switch operating shaft is exposed on the operation panel. The interlock plate presses the isolating switch to convert the micro switch, the micro switch changes from the normally open point to the normally closed point, and the closing circuit of the load switch is connected. 7. The panel interlocking device for combined electrical appliances according to claim 6, characterized in that: when the load switch is opened, the operating shaft of the load switch rotates counterclockwise, driving the interlocking plate of the load switch indication plate to rotate upwards, and the interlocking operation pin Drive the interlock plate to move upward to position three, only the hole of the isolation sleeve operation panel is exposed on the operation panel, and the isolation switch mechanism is activated by operating the isolation switch operation panel; when the interlock operation pin drives the interlock plate upward to leave the operation panel position four , the interlock plate does not press the isolating switch to convert the micro switch, the normally closed point of the micro switch becomes the normally open point, and the closing circuit of the load switch is not connected. 8. The panel interlocking device for combined electrical appliances according to claim 6, characterized in that: when the isolating switch is opened, the cylindrical pin on the operating panel of the isolating bushing rotates counterclockwise from the closed position to the open position, and the outlet side If there is no electricity, the electromagnetic lock is energized and unlocked or manually unlocked. The interlock operation pin drives the interlock plate to move upward to position 2. Only the hole of the ground bushing operation panel is exposed on the operation panel, and the ground switch is activated by operating the ground switch operation panel. 9. The panel interlocking device for combined electrical appliances according to claim 6, characterized in that: when the grounding switch is opened, the cylindrical pin on the grounding bushing operation panel rotates counterclockwise from the closing position to the opening position, and the interlocking operation The pin drives the interlocking plate to move upwards to position one, the interlocking plate avoids the locking plate clamping plate, and the cabinet door is opened. 10 . The panel interlocking device for combined electrical appliances according to claim 9 , wherein the interlocking plate clamping plate is an L-shaped plate with a notch installed on the cabinet door. 11 .