A device for recognizing the closing-in position of a pole shutter

Abstract

The application discloses a knife switch closing-in-place recognition device, and relates to the technical field of knife switch closing, which comprises a contact assembly; the recognition unit comprises a trigger assembly and an indication assembly. The device directly determines by installing the trigger assembly at the end of the knife switch closing movement path and near the actual contact position of the moving contact and the static contact, instead of the drive side of the operating mechanism away from the contact matching area, eliminates various errors caused by indirect detection, and greatly improves the closing-in-place determination accuracy. Secondly, the trigger assembly is directly connected with the indication assembly. After the knife switch is closed in place, the mechanical action is transmitted to the indication assembly through the trigger assembly, the indication assembly synchronously generates a visible state change, and the operator can immediately confirm the closing-in-place state after completing the closing, without additional detection operation or waiting for the result.

Description

Technical Field

[0001] This invention relates to disconnector closing technology, and in particular to a disconnector closing position identification device. Background Technology

[0002] The proper closing status of the disconnector directly affects the operational safety of the switchgear. If the circuit is energized before the disconnector is fully closed, it will lead to poor contact between the moving and stationary contacts, abnormally increased contact resistance, and potentially serious accidents such as contact overheating, arc erosion, or even electrical fires. Therefore, accurately determining whether the disconnector is fully closed after the switchgear has completed the closing operation is a necessary step to ensure the safe operation of the equipment.

[0003] Currently, fixed switchgear has a compact internal structure, and the contact points of the disconnectors are often obscured by other components or located deep within the cabinet, limiting visibility and making it difficult for operators to clearly identify the actual contact state. Some switchgear has mechanical position indicators on the transmission links or operating handles of the operating mechanism, indirectly reflecting the opening and closing status of the disconnectors through the position of the indicator. However, this method detects the movement position of the operating mechanism rather than the actual contact position of the contacts themselves. Factors such as pin clearance in the transmission chain, elastic deformation of the linkage, and wear of transmission components can all cause deviations between the indicator position and the actual contact position. This deviation becomes more significant after long-term operation and increased wear of transmission components, potentially leading to false indications such as the indicator showing "closed" when the contacts are not actually fully in position, posing a safety hazard. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: the problem that the existing disconnect switch cannot intuitively reflect whether the closing position is in place.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a knife switch closing position identification device, which includes a contact assembly installed on the mounting surface of the knife switch closing side; An identification unit is installed on one side of the contact assembly; The identification unit includes a trigger component disposed on one side of the contact component, and an indicator component connected to the trigger component; The triggering component is arranged in the direction of the disconnector closing movement, and the installation position of the triggering component corresponds to the end segment of the disconnector closing movement path; When the disconnector is closed, the triggering component is activated, and the indicating component subsequently undergoes a visible state change.

[0006] In a preferred embodiment of the switch closing position identification device of the present invention: the contact assembly includes a fixed base, a stationary contact hinged to the front end of the fixed base, and a moving contact cooperating with the stationary contact; The moving contact and the stationary contact work together to conduct electricity.

[0007] In a preferred embodiment of the disconnector closing position identification device of the present invention: the triggering component includes triggering elements fixedly disposed on opposite sides of the stationary contact, and limit switches correspondingly disposed below the triggering elements; When the stationary contact is closed to the position, the trigger element triggers the limit switch.

[0008] In a preferred embodiment of the disconnector closing position identification device of the present invention, the indicating component includes a housing fixedly disposed on one side of the fixed base, a control module disposed inside the housing, a power supply module disposed inside the housing, and an indicator light disposed at the end of the housing.

[0009] In a preferred embodiment of the switch closing position identification device of the present invention: the fixed base includes a hinge end protruding on one side; The stationary contact includes a rotating block hinged to one side of the hinge end, and a contact block fixed to one side of the rotating block; A torsion spring is provided between the hinge end and the rotating block.

[0010] In a preferred embodiment of the switch closing position identification device of the present invention: the triggering element includes a pressure rod fixedly disposed on both sides of the rotating block, and a limiting element disposed on one side of the pressure rod.

[0011] In a preferred embodiment of the switch closing position identification device of the present invention: the pressure rod includes an insulating sleeve disposed on its periphery; When the knife switch is closed, the insulating sleeve presses down on the limit switch.

[0012] In a preferred embodiment of the switch closing position identification device of the present invention: a photovoltaic panel is also provided on one side of the housing; the power supply module is a detachable power supply, and the photovoltaic panel is electrically connected to the power supply module.

[0013] In a preferred embodiment of the switch closing position identification device of the present invention: the limit switch is a micro switch; Pressing the pressure plate of the micro switch triggers the indicator light to produce a visible status change.

[0014] In a preferred embodiment of the switch closing position identification device of the present invention: the indicator light is a light-emitting diode; The control module includes a timing circuit, which is electrically connected to the limit switch and the indicator light, respectively, and drives the indicator light to flash when the limit switch is triggered.

[0015] The beneficial effects of this invention are as follows: By installing the triggering component at the end of the disconnector's closing movement path, near the actual contact position of the moving and stationary contacts, rather than on the transmission side of the operating mechanism far from the contact mating area, the detection reference point and the closing target point spatially coincide. When the contact is in position, the triggering component is triggered; if it is not in position, it remains in its initial state, achieving direct judgment and eliminating various errors caused by indirect detection, thus significantly improving the accuracy of closing position determination. Secondly, the triggering component is directly connected to the indicating component. After the disconnector is closed, the mechanical action is transmitted to the indicating component via the triggering component, and the indicating component synchronously generates a visible state change. After the operator completes the closing, they can immediately confirm the closing position without additional detection operations or waiting for results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the overall structure of the knife switch closing position identification device of the present invention is shown; Figure 2 A schematic diagram of the contact assembly and trigger assembly of the present invention is shown; Figure 3 A schematic diagram of the trigger component and indicator component of the present invention is shown; Figure 4 An exploded view of the triggering component and indicating component structure of the present invention is shown. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0019] Reference Figures 1-4 This embodiment provides a knife switch closing position identification device, including a contact assembly 1, which is installed on the mounting surface on the knife switch closing side; Identification unit 2 is installed on one side of contact assembly 1; The identification unit 2 includes a trigger component 21 disposed on one side of the contact component 1, and an indicator component 22 connected to the trigger component 21; The trigger component 21 is arranged in the direction of the disconnector closing movement, and the installation position of the trigger component 21 corresponds to the end section of the disconnector closing movement path; When the disconnector is closed, the trigger component 21 is triggered, and the indicator component 22 then produces a visible status change.

[0020] In this embodiment, the contact assembly 1 is mounted on the mounting surface of the disconnector on the closing side. The contact assembly 1 constitutes the load-bearing structure for the closing movement of the disconnector. When the disconnector moves along the closing direction and finally reaches its final position, it forms contact with the contact assembly 1. The identification unit 2 is mounted on one side of the contact assembly 1. The identification unit 2 and the contact assembly 1 are arranged spatially adjacent to each other, enabling the identification unit 2 to directly sense the closing movement of the disconnector relative to the contact assembly 1.

[0021] The identification unit 2 includes a triggering component 21 and an indication component 22.

[0022] The triggering component 21 is disposed on one side of the contact component 1, and is arranged facing the direction of the disconnector's closing movement. The installation position of the triggering component 21 corresponds to the end section of the disconnector's closing movement path, that is, near the final position reached by the disconnector's moving parts when the disconnector is closed. This positional relationship ensures that the triggering component 21 is only triggered when the disconnector moves to the closing end point, rather than being triggered at the beginning or middle of the closing stroke.

[0023] The indicating component 22 is connected to the triggering component 21. The indicating component 22 is arranged on one side of the triggering component 21 so that the mechanical action of the triggering component 21 when it is triggered can be directly transmitted to the indicating component 22. The position of the indicating component 22 should ensure that the visual changes in its state can be observed by the operator from outside the cabinet.

[0024] Preferably, the trigger component 21 employs an elastic pressing structure, including a pressing arm extending towards the closing direction of the disconnect switch and an elastic reset member. When the disconnect switch is fully closed, the moving component triggers the free end of the pressing arm, causing the pressing arm to overcome the resistance of the elastic reset member and generate displacement. This displacement is transmitted to the indicating component 22 via mechanical linkage. The indicating component 22 employs an electroluminescent structure, including a light-emitting element and a built-in power supply for powering the light-emitting element. The displacement action of the trigger component 21 connects the power supply circuit of the light-emitting element, causing the light-emitting element to change from an off state to a lit state, forming a visible state change. This visible state change is a transition "from no light to light".

[0025] Preferably, the triggering component 21 employs a lever mechanism, including a force-receiving end that receives the triggering action of the knife switch moving component and a driving end. When the knife switch is fully closed, the force-receiving end is triggered, and the driving end swings accordingly. The indicating component 22 employs a flip-up indicator structure, including an indicator that can flip around an axis and a return spring. The driving end of the triggering component 21 is connected to the indicator via a connecting rod. When the triggering component 21 is triggered, it drives the indicator to overcome the resistance of the return spring and flip, changing the indicator from a first visual state to a second visual state, thus creating a change in visual state. This change in visual state is a change in the posture of the mechanical component and requires no power supply.

[0026] Preferably, the triggering component 21 includes a permanent magnet that moves with the knife switch moving part and a fixedly installed magnetic sensor. When the knife switch is closed, the permanent magnet enters the detection range of the magnetic sensor, and the magnetic sensor outputs a trigger signal. The indicating component 22 includes a light-emitting element, a built-in power supply, and a switching circuit. The trigger signal output by the magnetic sensor controls the switching circuit to conduct, causing the light-emitting element to be energized and emit light, forming a visible state change.

[0027] When the closing motion of the disconnector is initiated, the disconnector moving component moves toward the contact assembly 1 along the closing direction. At the beginning and middle of the closing stroke, the disconnector moving component has not yet reached the installation position of the trigger assembly 21, the trigger assembly 21 remains in its initial state, and the indicator assembly 22 accordingly remains in its first visual state.

[0028] When the switch moving component continues to move to the end section, it contacts and triggers the triggering component 21. Upon triggering, the triggering component 21 changes state and transmits this state change to the indicating component 22 via the connection between the two. Upon receiving the transmitted action, the indicating component 22 changes from a first visual state to a second visual state, i.e., a visual state change occurs.

[0029] Once the operator observes the change in the visible status of the indicator component 22 through the cabinet observation window or inspection channel, they can confirm that the disconnector has been closed. Conversely, if the indicator component 22 maintains its initial visual state without change, it indicates that the disconnector has not yet been closed.

[0030] In this embodiment, the installation position of the trigger component 21 directly corresponds to the end segment of the disconnector's closing movement path, that is, near the final position where the contacts are actually closed. This design makes the detection reference point coincide with the closing target point in space, eliminating the accumulated error of intermediate links in the transmission chain and achieving accurate judgment of "what is detected is what is reached". At the same time, this design breaks through the technical prejudice that "detection devices should be kept away from high-voltage live areas", and through a reasonable structural layout, the trigger component 21 can reliably work in the vicinity of the high-voltage side.

[0031] Reference Figures 2-4As an optional embodiment, in one embodiment provided by the present invention, the contact assembly 1 further includes a fixed base 11, a stationary contact 12 hinged to the front end of the fixed base 11, and a moving contact 13 cooperating with the stationary contact 12. The moving contact 13 and the stationary contact 12 work together to conduct electricity.

[0032] Furthermore, the trigger assembly 21 includes trigger elements 211 fixedly disposed on opposite sides of the stationary contact 12, and limit switches 212 correspondingly disposed below the trigger elements 211; When the stationary contact 12 is closed to the position, the trigger element 211 triggers the limit switch 212.

[0033] Furthermore, the fixing base 11 includes a hinge end 111 protruding from one side thereon; The stationary contact 12 includes a rotating block 121 hinged to one side of the hinge end 111, and a contact block 122 fixed to one side of the rotating block 121; A torsion spring 14 is provided between the hinge end 111 and the rotating block 121.

[0034] Furthermore, the trigger 211 includes a pressure rod 2111 fixedly disposed on both sides of the rotating block 121, and a limiting member 2112 disposed on one side of the pressure rod 2111.

[0035] Furthermore, the pressure bar 2111 includes an insulating sleeve 3 disposed on its periphery; When the knife switch is closed to the position, the insulating sleeve 3 presses down the limit switch 212.

[0036] In this embodiment, the fixing base 11 is fixedly installed on the mounting surface of the disconnector side, serving as the supporting base for the entire contact assembly 1. The fixing base 11 has a plate-like structure and is fixed to the mounting surface of the upper end of the insulator by fasteners. A hinge end 111 protrudes from the side of the fixing base 11 facing the disconnector closing direction. The hinge end 111 is a protruding column structure formed by protruding outward from the plate surface of the fixing base 11 in the horizontal direction, and its axis is perpendicular to the plane where the disconnector closing movement direction is located. The hinge end 111 provides a fulcrum for the rotation of the stationary contact 12, and the stationary contact 12 rotates around the hinge end 111 as a pivot.

[0037] The rotating block 121 is the main moving component of the stationary contact 12, with one end fitted onto the hinge end 111 to form a rotational fit. Specifically, the root of the rotating block 121 has a shaft hole that matches the outer diameter of the hinge end 111, and the hinge end 111 passes through the shaft hole, allowing the rotating block 121 to swing around the axis of the hinge end 111 within a certain angle range.

[0038] Contact block 122 is fixed to the side surface of rotating block 121 facing moving contact 13, serving as a conductive contact surface that directly contacts moving contact 13. Contact block 122 is made of conductive material, and its contact surface is arranged facing the closing movement direction of moving contact 13. When moving contact 13 moves to the closed position, the contact surface of moving contact 13 comes into contact with the contact surface of contact block 122, forming an electrical connection and realizing circuit conduction. Contact block 122 and rotating block 121 can be fixedly connected by bolts or welding.

[0039] Preferably, a torsion spring 14 is provided between the hinge end 111 and the rotating block 121. The torsion spring 14 is fitted around the outer periphery of the hinge end 111, with its first torsion arm abutting against the plate surface of the fixed base 11 and its second torsion arm abutting against the root side of the rotating block 121. The torsion spring 14 applies an elastic bias torque to the rotating block 121, so that the rotating block 121 maintains a preset initial position when no external force is applied. In this initial position, the contact surface of the contact block 122 is open in the direction of the closing movement of the moving contact 13, waiting for the arrival of the moving contact 13. When the moving contact 13 pushes the contact block 122, forcing the rotating block 121 to rotate, the torsion spring 14 is torsionally charged and stores energy. Its reaction force simultaneously provides contact pressure to the contact surface between the contact block 122 and the moving contact 13, ensuring reliable conduction.

[0040] Driven by the closing operating mechanism, the moving contact 13 moves linearly towards the stationary contact 12 in the closing direction. The contact surface of the moving contact 13 is positioned opposite to the contact surface of the contact block 122, and their contact surface geometries are compatible. When the moving contact 13 moves to the closing end position, its contact surface is pressed tightly against the contact surface of the contact block 122, achieving electrical connection. The direction of movement of the moving contact 13 during the closing process is parallel to the swing plane of the rotating block 121.

[0041] Preferably, the trigger element 211 is fixedly disposed on opposite sides of the stationary contact 12, that is, fixed on opposite side walls of the rotating block 121. The trigger elements 211 are symmetrically arranged on both sides of the rotating block 121 and move synchronously with the rotation of the rotating block 121 around the hinge end 111. When the rotating block 121 rotates due to the moving contact 13 pressing the contact block 122, the trigger elements 211 fixed on both sides of it will generate synchronous angular displacement.

[0042] Limit switch 212 is positioned below trigger element 211. Limit switch 212 is fixedly mounted on the mounting base 11, located below the movement trajectory of trigger element 211, ensuring accurate contact with the trigger end of limit switch 212 when trigger element 211 moves downwards with rotating block 121. The trigger end of limit switch 212 faces upwards and is vertically aligned with the lower end face of trigger element 211. Limit switch 212 has an initial release state and an activated state after being pressed; in the activated state, it outputs a trigger signal to indicator component 22.

[0043] Preferably, the pressure rod 2111 is fixedly disposed on opposite sides of the rotating block 121, extending downward from the side wall of the rotating block 121 to above the trigger end of the limit switch 212. The extension direction of the pressure rod 2111 is consistent with the movement direction of its free end when the rotating block 121 swings, so that the swinging motion of the rotating block 121 is converted into the linear displacement of the lower end of the pressure rod 2111. The length of the pressure rod 2111 satisfies the following: when the rotating block 121 is in the initial position, there is a gap between the lower end of the pressure rod 2111 and the trigger end of the limit switch 212; when the rotating block 121 swings to the closed position, the lower end of the pressure rod 2111 moves downward to press the trigger end of the limit switch 212.

[0044] The limiting member 2112 is a stop structure protruding from the side wall of the pressure rod 2111, located above the lower end of the pressure rod 2111. The limiting member 2112 cooperates with the corresponding stop surface on the fixed base 11: when the pressure rod 2111 descends to the point where the limiting member 2112 contacts the stop surface, the limiting member 2112 prevents the pressure rod 2111 from continuing to descend, thereby limiting the pressing depth of the pressure rod 2111 into the limit switch 212. This structure prevents the rotating block 121 from excessively pressing the pressure rod 2111 under the excessive push of the moving contact 13, thus avoiding damage to the limit switch 212 due to overtravel.

[0045] The insulating sleeve 3 is made of insulating material and is fitted onto the lower end of the pressure rod 2111 where it contacts the trigger end of the limit switch 212. The insulating sleeve 3 covers and isolates the metal body of the pressure rod 2111, ensuring that when the pressure rod 2111 presses down on the limit switch 212, the contact surface between them is the outer surface of the insulating sleeve 3, not the metal body of the pressure rod 2111. The insulating sleeve 3 cuts off the electrical conduction path from the high-voltage side rotating block 121 and contact block 122 through the pressure rod 2111 to the low-voltage side of the limit switch 212 and the identification unit 2, thus ensuring the electrical safety of the identification unit 2.

[0046] After the disconnector closing operation is initiated, the moving contact 13 moves towards the stationary contact 12 in the closing direction under the drive of the closing operation mechanism. At the beginning and middle of the closing stroke, the moving contact 13 has not yet contacted the contact block 122. At this time, the rotating block 121 maintains its initial position under the elastic bias torque of the torsion spring 14, and the contact surface of the contact block 122 is in an open state awaiting the arrival of the moving contact 13. The pressure rods 2111 fixed on both sides of the rotating block 121 are correspondingly in their initial high positions, with a gap maintained between their lower ends and the trigger end of the limit switch 212. The limit switch 212 is in its initial released state, and the indicating component 22 maintains its first visual state. When the moving contact 13 continues to move until its contact surface begins to contact the contact surface of the contact block 122, the moving contact 13 applies a pushing force to the contact block 122 in the closing direction. Since the contact block 122 is fixed to the rotating block 121, the thrust forces the rotating block 121 to overcome the elastic bias torque of the torsion spring 14 and swing around the axis of the hinge end 111 toward the closing position. The swing of the rotating block 121 drives the pressure rods 2111 fixed on both sides of it to move synchronously. The pressure rods 2111 move downward with the swing of the rotating block 121, and the insulating sleeve 3 sleeved on the lower end of the pressure rod 2111 moves downward accordingly. When the rotating block 121 swings to the closing position—that is, the contact surface of the moving contact 13 and the contact block 122 is completely pressed together and the circuit is reliably connected—the insulating sleeve 3 at the lower end of the pressure rod 2111 moves down to touch the trigger end of the limit switch 212. After the trigger end of the limit switch 212 is pressed down by the insulating sleeve 3, the limit switch 212 switches from the initial release state to the action state and outputs a trigger signal to the indicating component 22. After receiving the trigger signal, the indicator component 22 changes from the first visual state to the second visual state, resulting in a change in the visual state.

[0047] During the downward movement of the pressure rod 2111, when its downward displacement reaches a preset threshold, the limiting member 2112 contacts the stop surface on the fixed base 11, forming a mechanical stop. The limiting member 2112 prevents the pressure rod 2111 from continuing to move downward, thereby limiting the pressing depth of the pressure rod 2111 on the limit switch 212 within the rated stroke range of the limit switch 212, protecting the limit switch 212 from overtravel damage. During this stage, the torsion spring 14 is torsionally charged and stores energy, and its reaction torque acts simultaneously on the rotating block 121, providing continuous contact pressure between the contact surface of the contact block 122 and the moving contact 13, ensuring the reliability of circuit conduction.

[0048] Once the operator observes that the indicator component 22 changes from the first visual state to the second visual state, it can confirm that the moving contact 13 and the stationary contact 12 have closed in place and formed a reliable conductive connection. Conversely, if the indicator component 22 remains in the first visual state without change, it indicates that the moving contact 13 has not yet moved in place, the lever 2111 has not triggered the limit switch 212, and the closing has not been completed.

[0049] Reference Figures 3-4As an optional embodiment, in one embodiment provided by the present invention, the indicator component 22 further includes a housing 221 fixedly disposed on one side of the fixing base 11, a control module 222 disposed inside the housing 221, a power supply module 223 disposed inside the housing 221, and an indicator light 224 disposed at the end of the housing 221.

[0050] Furthermore, a photovoltaic panel 4 is also provided on one side of the housing 221; the power supply module 223 is a detachable power supply, and the photovoltaic panel 4 is electrically connected to the power supply module 223.

[0051] Furthermore, the limit switch 212 is a micro switch; Pressing the pressure plate 5 of the micro switch triggers the indicator light 224 to produce a visible status change.

[0052] Furthermore, indicator light 224 is a light-emitting diode; The control module 222 includes a timing circuit, which is electrically connected to the limit switch 212 and the indicator light 224 respectively. When the limit switch 212 is triggered, the indicator light 224 is driven to flash.

[0053] In this embodiment, the housing 221 is made of insulating material and has a closed receiving chamber inside. The housing 221 has a block-shaped structure, and one side of it is fixed to the plate surface of the fixing base 11. It is detachably connected by fasteners or a snap-fit ​​structure. The installation position of the housing 221 is selected on the side of the fixing base 11 away from the contact area between the moving contact 13 and the stationary contact 12, which avoids interference with the closing movement space and makes it easy for the operator to directly observe the indicator light 224 on the housing 221.

[0054] The control module 222 includes a circuit board and electronic components mounted on the circuit board. The circuit board is fixed to the inner wall of the housing 221 by studs or slots. The core of the control module 222 is a timing circuit, which is electrically connected to the limit switch 212 and the indicator light 224. Specifically, the timing circuit includes a timer chip and its peripheral resistive and capacitive components. The trigger input terminal of the timer chip is connected to the output terminal of the limit switch 212 via a wire, and the output terminal of the timer chip is connected to the indicator light 224 via a drive circuit. When the limit switch 212 is activated, its output terminal generates a level transition signal. This transition signal is input to the trigger input terminal of the timer chip. After being triggered, the timer chip outputs a periodic square wave signal from its output terminal. The square wave signal is amplified by the drive circuit and drives the indicator light 224 to periodically turn on and off at a square wave frequency, thereby achieving a flashing effect. The timer chip also has a timing unit inside, which starts timing from the trigger moment. When the timing reaches the preset duration, the timer chip stops outputting the square wave signal, and the indicator light 224 turns off.

[0055] The control module 222's circuit board is also equipped with wiring terminals, through which the connecting wires between the limit switch 212 and the control module 222 are connected to the circuit board. The connecting wires are introduced into the housing 221 through a wire hole. The power supply module 223 is located in a receiving chamber inside the housing 221, and is arranged separately from the control module 222 within the housing 221. The power supply module 223 is powered by a removable, independent battery pack. The trigger detection and indication functions of the identification unit 2 do not rely on the external power supply system of the switchgear. Even when the auxiliary power supply inside the cabinet fails or the switchgear is under power outage maintenance, the identification unit 2 can still operate normally, achieving self-powered independent operation of the identification device.

[0056] Indicator light 224 is a green light-emitting diode (LED). Indicator light 224 is electrically connected to the output terminal of control module 222 via a wire. The pins of indicator light 224 pass through mounting holes opened at the end of housing 221. The light-emitting surface of indicator light 224 faces the outside of housing 221, allowing the operator to observe the on / off state and flashing effect of indicator light 224 from outside the cabinet. Photovoltaic panel 4 is fixedly installed on the outer wall of housing 221 on the side opposite to the mounting base 11, i.e., on the outer surface of housing 221. Photovoltaic panel 4 uses thin-film photovoltaic cells or polycrystalline silicon photovoltaic cells, with its light-receiving surface facing the outside of housing 221, allowing ambient light to shine on the light-receiving surface of photovoltaic panel 4. Photovoltaic panel 4 is electrically connected to power supply module 223. The positive and negative output terminals of photovoltaic panel 4 are respectively introduced into the interior through the wall of housing 221 via wires, and connected to the charging terminal of power supply module 223. When photovoltaic panel 4 is exposed to ambient light, it generates DC power, which is transmitted to power supply module 223 via wires to supplement the charging of power supply module 223.

[0057] Limit switch 212 is a micro switch, which has a pressure plate 5. In this embodiment, the pressure plate 5 is arranged facing upwards and aligned vertically with the insulating sleeve 3 at the lower end of the pressure rod 2111. The pressure plate 5 is an elastic triggering component above the trigger end of the micro switch. One end of the pressure plate 5 is hinged to the housing of the micro switch, and the other end is a free end that tilts upwards, forming a force-bearing surface for triggering by external components. In its natural state, the pressure plate 5 maintains its initial tilted position. When subjected to a downward triggering force, it bends downwards, and the displacement of the pressure plate 5 is transmitted to the quick-acting mechanism inside the micro switch, driving the contact group to switch states.

[0058] When the disconnector closing operation is initiated, the moving contact 13 moves toward the stationary contact 12 in the closing direction. At the beginning and middle of the closing stroke, the moving contact 13 has not yet contacted the contact block 122, the rotating block 121 remains in its initial position, and the above-mentioned standby state remains unchanged.

[0059] When the moving contact 13 moves to contact the contact block 122 and continues to push, the rotating block 121 overcomes the elastic bias torque of the torsion spring 14 and swings around the hinge end 111, driving the pressure rod 2111 downward. The insulating sleeve 3 moves downward with the pressure rod 2111 to contact the pressure plate 5 of the micro switch and continues to press down on the pressure plate 5, causing it to bend downward. When the displacement of the pressure plate 5 reaches the operating stroke of the micro switch, the internal quick-acting mechanism of the micro switch moves rapidly, the contact group state switches instantaneously, and the output terminal of the micro switch generates a level transition signal.

[0060] The level transition signal is transmitted via a wire to the timing circuit trigger input of the control module 222, triggering the timer chip. The timer chip outputs a periodic square wave signal from its output terminal, which is amplified by the drive circuit and applied to the indicator light 224. The indicator light 224 is powered on and illuminates during the high-level range of the square wave signal and is powered off and extinguished during the low-level range, forming a green light signal flashing at a frequency of approximately 1Hz. That is, the indicator component 22 changes from the first visual state of no light to the second visual state of flashing green, producing a change in visual state.

[0061] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A device for identifying the closing position of a disconnect switch, characterized in that, include: Contact assembly (1) is installed on the mounting surface of the disconnector on the closing side; The identification unit (2) is installed on one side of the contact assembly (1); The identification unit (2) includes a trigger component (21) disposed on one side of the contact component (1) and an indicator component (22) connected to the trigger component (21). The trigger component (21) is arranged in the direction of the disconnector closing movement, and the installation position of the trigger component (21) corresponds to the end section of the disconnector closing movement path; When the disconnector is closed, the triggering component (21) is triggered, and the indicating component (22) then produces a visible state change.

2. The disconnector closing position identification device according to claim 1, characterized in that: The contact assembly (1) includes a fixed base (11), a stationary contact (12) hinged to the front end of the fixed base (11), and a moving contact (13) cooperating with the stationary contact (12). The moving contact (13) and the stationary contact (12) work together to conduct electricity.

3. The disconnect switch closing position identification device according to claim 2, characterized in that: The triggering component (21) includes a trigger element (211) fixedly disposed on opposite sides of the stationary contact (12), and a limit switch (212) correspondingly disposed below the trigger element (211). When the stationary contact (12) is closed, the trigger (211) triggers the limit switch (212).

4. The disconnect switch closing position identification device according to claim 3, characterized in that: The fixing seat (11) includes a hinge end (111) protruding from one side thereon. The stationary contact (12) includes a rotating block (121) hinged to one side of the hinge end (111) and a contact block (122) fixed to one side of the rotating block (121). A torsion spring (14) is provided between the hinge end (111) and the rotating block (121).

5. The disconnector closing position identification device according to claim 4, characterized in that: The trigger (211) includes a pressure rod (2111) fixedly disposed on both sides of the rotating block (121), and a limiting member (2112) disposed on one side of the pressure rod (2111).

6. The disconnector closing position identification device according to claim 5, characterized in that: The pressure bar (2111) includes an insulating sleeve (3) disposed on its periphery; When the knife switch is closed, the insulating sleeve (3) presses down the limit switch (212).

7. The disconnect switch closing position identification device according to claim 3, characterized in that: The indicator component (22) includes a housing (221), a control module (222) disposed inside the housing (221), a power supply module (223) disposed inside the housing (221), and an indicator light (224) disposed at the end of the housing (221).

8. The disconnector closing position identification device according to claim 7, characterized in that: A photovoltaic panel (4) is also provided on one side of the housing (221); the power supply module (223) is a detachable power supply, and the photovoltaic panel (4) is electrically connected to the power supply module (223).

9. The disconnector closing position identification device according to claim 8, characterized in that: The limit switch (212) is a micro switch; Pressing the pressure plate (5) of the micro switch triggers the indicator light (224) to produce a visible state change.

10. The disconnector closing position identification device according to claim 9, characterized in that: The indicator light (224) is a light-emitting diode; The control module (222) includes a timing circuit, which is electrically connected to the limit switch (212) and the indicator light (224) respectively, and drives the indicator light (224) to flash when the limit switch (212) is triggered.

Images