Mistaken touch prevention mechanism for neutral knife switch of special transformer

Abstract

The utility model relates to the field of electric power, in particular to a special transformer neutral knife switch mistaken touch prevention mechanism which comprises a transformation plate. The transformer further comprises a mistaken touch prevention assembly and a buzzer, the mistaken touch prevention assembly is arranged at the upper end of the transformer plate, and the mistaken touch prevention assembly comprises a first groove body, a second groove body, a hole opening groove, a sliding rod, a limiting sleeve, a limiting groove, a rotating handle and an insulating separation blade. According to the utility model, in the use process, the disconnecting switch is blocked by the sliding rod, so that the disconnecting switch cannot be inserted into the wiring groove to perform the closing operation of a connected line, and in the use process, the rotating handle needs to be rotated and pushed to be placed in the limiting groove, so that the insulating separation blade is placed in the second groove body from the first groove body; the isolating switch is prevented from being blocked during rotation, reverse acting force can be applied to the sliding rod through the spring, so that the insulating separation blade abuts against the inner wall of the second groove body or the first groove body, and when the electric shock terminal is pressed, an alarm signal is emitted through the signal emitter and is transmitted to subsequent alarm equipment.

Description

Technical Field

[0001] This utility model belongs to the field of power, specifically relating to a special transformer neutral switch anti-accidental contact mechanism. Background Technology

[0002] The neutral point of a transformer is typically used for grounding or insulation to maintain system voltage stability and limit fault current. Neutral point grounding helps detect and isolate single-phase ground faults and prevent equipment damage. The system may need to switch between different grounding methods (such as direct grounding, resistor grounding, or no grounding) to adapt to different operating conditions.

[0003] In the use of existing transformer disconnectors, carelessness or misoperation by workers often leads to accidental activation of the disconnector, causing personnel working on site to be injured due to failure to evacuate in time, thus creating a series of safety hazards.

[0004] Therefore, a special transformer neutral switch anti-misoperation mechanism is proposed. The anti-misoperation component locks the switch under normal conditions, preventing it from being triggered. The protection mechanism needs to be unlocked first, and the protection mechanism is triggered by another linkage mechanism. This requires the operator to manually operate the switch once. During the operation, an additional buzzer alarm will be triggered, thus providing sufficient evacuation time. This solves the problem in the prior art that it is inconvenient to promptly remind other operators when the switch is pulled. Utility Model Content

[0005] To overcome the problem in existing technologies where it is inconvenient to promptly remind other personnel when the neutral switch is pulled, a special transformer neutral switch anti-accidental contact mechanism is proposed.

[0006] The technical solution of this utility model is as follows: a special transformer neutral switch anti-misoperation mechanism, including a transformer plate; it also includes an anti-misoperation component and a buzzer. The anti-misoperation component is provided at the upper end of the transformer plate. The anti-misoperation component includes a first groove, a second groove, an opening groove, a sliding rod, a limiting sleeve, a limiting groove, a rotating handle, an insulating baffle, a spring, and a contact terminal. The upper end of the transformer plate has three first grooves and second grooves. Two connected first grooves and second grooves form a group. An opening groove is provided through the right end of the transformer plate. The opening groove is interconnected with the first groove and the second groove. A sliding rod is slidably arranged on the opening groove. An insulating baffle is fixed to the outer wall of the sliding rod. The insulating baffle is adapted to the first groove and the second groove. The first groove is a right-angled triangular groove. A spring is fixed to the left end of the inner wall of the opening groove. The other end of the spring is in contact with the left end of the sliding rod. A contact terminal is fixed to the left end of the inner wall of the opening groove. The contact terminal is located inside the spring.

[0007] Preferably, the outer wall of the transformer plate is fixedly connected to a limiting sleeve, the inner wall of the limiting sleeve is fitted with the outer wall of the slide rod, the right end of the slide rod is fixedly connected to a rotating handle, and the outer wall of the limiting sleeve is provided with a limiting groove that is compatible with the rotating handle.

[0008] Preferably, the upper end of the transformer plate is provided with three sets of connectors, each connector including a conductive block, a wiring groove, a conductive base, a conductive sheet, a terminal block, a disconnecting switch, and a protective sleeve; three conductive blocks are fixedly connected to the upper end of the transformer plate, a wiring groove is fixedly connected to the upper end of the conductive blocks, three conductive bases are fixedly connected to the upper end of the transformer plate, a disconnecting switch is fixedly connected to the upper end of the three conductive bases, and a protective sleeve is fixedly connected to the upper end of the three disconnecting switches.

[0009] Preferably, the disconnecting switch and the wiring trough are compatible, and the width of the disconnecting switch and the width of the insulating baffle are the same.

[0010] Preferably, the conductive base has a conductive sheet at its rear end, and the conductive sheet has a terminal at its rear end. The transformer plate has two mounting slots at its upper end.

[0011] Preferably, an indicator light is fixedly connected to the upper end of the transformer plate, and a signal transmitter is fixedly connected to the upper end of the transformer plate.

[0012] Preferably, a buzzer is fixedly connected to the right end of the transformer plate, and the buzzer, signal transmitter and contact terminal are electrically connected.

[0013] The beneficial effects of this utility model are as follows: During use, the sliding rod blocks the isolating switch, preventing it from being inserted into the wiring slot for closing the circuit. During use, the rotating handle needs to be rotated and pushed into the limiting slot, allowing the insulating baffle to be placed from the first slot into the second slot, ensuring the isolating switch is not obstructed during rotation. A spring provides a reverse force to the sliding rod, causing the insulating baffle to press against the inner wall of the second or first slot. When the contact terminal is pressed, an alarm signal is emitted via a signal transmitter, which then transmits the signal to subsequent alarm devices. Attached Figure Description

[0014] Figure 1 The diagram shows a three-dimensional structural schematic of a special transformer neutral switch anti-accidental contact mechanism according to this utility model.

[0015] Figure 2 The diagram shows a three-dimensional structural schematic of a special transformer neutral switch anti-accidental contact mechanism according to this utility model.

[0016] Figure 3 The diagram shows a three-dimensional structural schematic of the anti-accidental contact component of a special transformer neutral switch anti-accidental contact mechanism according to this utility model.

[0017] Figure 4The diagram shown is a cross-sectional three-dimensional structural schematic of the anti-accidental contact component of a special transformer neutral switch anti-accidental contact mechanism according to this utility model.

[0018] The markings in the attached diagram are as follows: 1. Transformer plate; 101. First groove; 102. Second groove; 103. Opening groove; 104. Slide rod; 105. Limiting sleeve; 106. Limiting groove; 107. Rotating handle; 108. Insulating baffle; 109. Spring; 110. Contact terminal; 2. Indicator light; 3. Mounting groove; 4. Buzzer; 5. Conductive block; 6. Wiring groove; 7. Signal transmitter; 8. Conductive base; 9. Conductive sheet; 10. Wiring terminal; 11. Disconnecting switch; 12. Protective sleeve. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-4This utility model provides an embodiment: a special transformer neutral switch anti-misoperation mechanism, including a transformer plate 1; it also includes an anti-misoperation component and a buzzer 4. The upper end of the transformer plate 1 is provided with the anti-misoperation component, which includes a first groove 101, a second groove 102, an opening groove 103, a sliding rod 104, a limiting sleeve 105, a limiting groove 106, a rotating handle 107, an insulating baffle 108, a spring 109, and a contact terminal 110; the upper end of the transformer plate 1 is provided with three first grooves 101 and two second grooves 102, and two phases... The first groove 101 and the second groove 102 are connected as a group. A through-hole groove 103 is provided at the right end of the transformer plate 1. The through-hole groove 103 communicates with the first groove 101 and the second groove 102. A sliding rod 104 is slidably mounted on the through-hole groove 103. An insulating baffle 108 is fixed to the outer wall of the sliding rod 104. The insulating baffle 108 is adapted to the first groove 101 and the second groove 102. The first groove 101 is a right-angled triangular groove. A spring 109 is fixed to the left end of the inner wall of the through-hole groove 103. The other end of the spring 109 is connected to the sliding rod 104. The left ends are fitted together, and a contact terminal 110 is fixedly connected to the left end of the inner wall of the slot 103. The contact terminal 110 is located inside the spring 109. A limit sleeve 105 is fixedly connected through the outer wall of the transformer plate 1. The inner wall of the limit sleeve 105 fits against the outer wall of the slide rod 104. A rotating handle 107 is fixedly connected to the right end of the slide rod 104. A limit groove 106 is opened on the outer wall of the limit sleeve 105. The limit groove 106 and the rotating handle 107 are compatible. During use, the slide rod 104 blocks the disconnect switch 11, preventing the disconnect switch 11 from being inserted into the wiring slot. In step 6, the closed operation of the connecting line is performed. During use, the rotating handle 107 needs to be placed in the limiting groove 106 by rotating and pushing, so that the insulating baffle 108 is placed from the first groove 101 into the second groove 102, so that the disconnect switch 11 is not obstructed when rotating. The spring 109 can exert a reverse force on the slide rod 104, so that the insulating baffle 108 abuts against the inner wall of the second groove 102 or the first groove 101. When the contact terminal 110 is pressed, an alarm signal is emitted through the signal transmitter 7, which is then transmitted to the subsequent alarm equipment.

[0021] Please see Figures 1-4In this embodiment, the upper end of the transformer plate 1 is provided with three sets of connectors, including conductive blocks 5, wiring grooves 6, conductive bases 8, conductive sheets 9, terminals 10, disconnecting switches 11, and protective sleeves 12. Three conductive blocks 5 are fixedly connected to the upper end of the transformer plate 1, wiring grooves 6 are fixedly connected to the upper end of the conductive blocks 5, three conductive bases 8 are fixedly connected to the upper end of the transformer plate 1, disconnecting switches 11 are fixedly connected to the upper end of the three conductive bases 8, and protective sleeves 12 are fixedly connected to the upper end of the three disconnecting switches 11. The disconnecting switches 11 and wiring grooves 6 are compatible. The width of the disconnecting switches 11 is the same as the width of the insulating baffle 108. A conductive sheet 9 is provided at the rear end of the conductive base 8, and a terminal 10 is provided at the rear end of the conductive sheet 9. Two mounting slots 3 are opened at the upper end of the transformer plate 1. An indicator light 2 and a signal transmitter 7 are fixedly connected to the upper end of the transformer plate 1. When the disconnecting switch 11 is not inserted into the wiring groove 6, the indicator light 2 lights up to provide a reminder.

[0022] Please see Figures 2-3 In this embodiment, a buzzer 4 is fixedly connected to the right end of the transformer plate 1. The buzzer 4, the signal transmitter 7 and the contact terminal 110 are electrically connected. When the contact terminal 110 is pressed, the signal is transmitted to the signal transmitter 7, and then the buzzer 4 emits a sound to serve as a warning.

[0023] If the protective sleeve 12 is pulled down directly during use, the insulating baffle 108 will resist the disconnect switch 11 in the first groove 101, preventing the disconnect switch 11 from being inserted into the wiring groove 6 and allowing current to flow. During use, by rotating the rotating handle 107, the handle 107 is rotated and pushed / pulled, and then placed on the limiting groove 106. At the same time, the insulating baffle 108 on the slide rod 104 comes out of the first groove 101 and is pushed to the left into the second groove 102. Then, the spring 109 acts in the opposite direction. The insulating baffle 108 is pressed against the right end of the inner wall of the second groove 102 and fixed in place. While pushing, it makes contact with the contact terminal 110 through the left end of the slide rod 104, thereby sending a pre-closing signal to the buzzer 4 and other alarm devices through the signal transmitter 7 for 1 minute to remind the personnel who have not evacuated to operate the switch knife, thus providing a reminder and sufficient evacuation time. When the disconnect switch 11 is not inserted into the wiring groove 6, the indicator light 2 lights up to indicate the work.

Claims

1. A special transformer neutral switch anti-misoperation mechanism, comprising a transformer plate (1); characterized in that: It also includes an anti-accidental contact component and a buzzer (4). The upper end of the transformer plate (1) is provided with an anti-accidental contact component, which includes a first groove (101), a second groove (102), an opening groove (103), a slide rod (104), a limiting sleeve (105), a limiting groove (106), a rotating handle (107), an insulating baffle (108), a spring (109), and a contact terminal (110). The upper end of the transformer plate (1) is provided with three first grooves (101) and second grooves (102). Two connected first grooves (101) and second grooves (102) form a group. The right end of the transformer plate (1) is provided with an opening groove (103). The groove (103) and the first groove (101) and the second groove (102) are interconnected. A sliding rod (104) is slidably arranged on the opening groove (103). An insulating baffle (108) is fixed to the outer wall of the sliding rod (104). The insulating baffle (108) is adapted to the first groove (101) and the second groove (102). The first groove (101) is in the shape of a right-angled triangular groove. A spring (109) is fixed to the left end of the inner wall of the opening groove (103). The other end of the spring (109) is in contact with the left end of the sliding rod (104). A contact terminal (110) is fixed to the left end of the inner wall of the opening groove (103). The contact terminal (110) is located inside the spring (109).

2. The special transformer neutral switch anti-misoperation mechanism according to claim 1, characterized in that: A limiting sleeve (105) is fixedly connected to the outer wall of the transformer plate (1). The inner wall of the limiting sleeve (105) is in contact with the outer wall of the slide rod (104). A rotating handle (107) is fixedly connected to the right end of the slide rod (104). A limiting groove (106) is opened on the outer wall of the limiting sleeve (105). The limiting groove (106) and the rotating handle (107) are compatible.

3. The special transformer neutral switch anti-misoperation mechanism according to claim 1, characterized in that: The upper end of the transformer plate (1) is provided with three sets of connectors, including conductive blocks (5), wiring grooves (6), conductive bases (8), conductive sheets (9), wiring terminals (10), disconnecting switches (11) and protective sleeves (12); the upper end of the transformer plate (1) is fixed with three conductive blocks (5), the upper end of the conductive blocks (5) is fixed with wiring grooves (6), the upper end of the transformer plate (1) is fixed with three conductive bases (8), the upper ends of the three conductive bases (8) are all fixed with disconnecting switches (11), and the upper ends of the three disconnecting switches (11) are all fixed with protective sleeves (12).

4. The special transformer neutral switch anti-misoperation mechanism according to claim 3, characterized in that: The disconnecting switch (11) and the wiring groove (6) are compatible, and the width of the disconnecting switch (11) is the same as the width of the insulating baffle (108).

5. A special transformer neutral switch anti-misoperation mechanism according to claim 3, characterized in that: The conductive base (8) has a conductive sheet (9) at its rear end, and a terminal (10) is provided at the rear end of the conductive sheet (9). The transformer plate (1) has two mounting slots (3) at its upper end.

6. The special transformer neutral switch anti-misoperation mechanism according to claim 1, characterized in that: An indicator light (2) is fixedly connected to the upper end of the transformer plate (1), and a signal transmitter (7) is fixedly connected to the upper end of the transformer plate (1).

7. A special transformer neutral switch anti-misoperation mechanism according to claim 1, characterized in that: A buzzer (4) is fixedly connected to the right end of the transformer plate (1), and the buzzer (4), signal transmitter (7) and contact terminal (110) are electrically connected.

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