A disconnector with a safety assembly

Abstract

This utility model relates to the field of high-voltage disconnect switch technology, specifically a disconnect switch with safety components. It includes a cabinet, a gate body fixedly installed on the inner wall of the cabinet, a right terminal fixedly installed on the top surface of the gate body, and a left terminal fixedly installed on the side of the top surface of the gate body away from the right terminal. A gate arm is rotatably installed on the inner wall of the right terminal, and a protective component is provided on the top of the gate body. This disconnect switch allows operators to control the closing and opening of the circuit from outside the cabinet, avoiding direct contact with the gate body and improving safety during use. Furthermore, the return spring ensures that the structure controlling the gate arm rotation is separated from the gate arm's rotation center when not in operation, preventing accidental disconnection. The cooperation between the locking block and the toothed groove also prevents accidental contact from affecting the circuit state, further enhancing safety during use.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage disconnect switch technology, specifically a disconnect switch with safety components. Background Technology

[0002] Disconnecting switches are the most commonly used electrical appliances in high-voltage switching equipment. As the name suggests, they play a role in isolating circuits. Their working principle and structure are relatively simple, and they are widely used in circuits.

[0003] According to a public announcement of a high-voltage disconnecting switch device with safety components (Announcement No.: CN222530299U), the aforementioned application allows the rotating rod to rotate by turning a knob, which in turn rotates the switch blade, thus achieving the purpose of controlling the power system switch. The screws and cover plate facilitate the disassembly and maintenance of the device. The contact sensor can detect whether the switch blade is in contact with the contact plate. The temperature sensor can detect the temperature at the bottom of the first and second support plates, preventing damage to the power system due to excessive temperature.

[0004] However, in actual use, the handle used to control the switch is always exposed, and the rotation of the handle controls the opening and closing of the switch in real time. This makes the disconnecting switch easily susceptible to accidental contact, affecting its closing function and thus the continuity of the circuit. Therefore, we propose a disconnecting switch with safety components. Utility Model Content

[0005] The purpose of this invention is to provide a disconnecting switch with safety components to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a disconnecting switch with a safety component, comprising a cabinet, a cabinet door hinged to the front of the cabinet, a gate body fixedly installed on the inner wall of the cabinet, a right terminal fixedly installed on the top surface of the gate body, a left terminal fixedly installed on the side of the top surface of the gate body away from the right terminal, a gate rod rotatably installed on the inner wall of the right terminal, a protective component provided on the top of the gate body, the protective component comprising a sleeve, the sleeve rotatably installed on the upper surface of the gate body, a pull rod movably connected to the inner wall of the sleeve, a pull ring fixedly installed at the end of the pull rod away from the sleeve, a contraction cavity formed in the inner wall of the sleeve, a return spring fixedly connected between the end of the pull rod and the inner wall of the contraction cavity, a protrusion fixedly installed on the arc-shaped inner wall of the contraction cavity, a straight groove formed on the arc-shaped outer wall of the pull rod, and a through hole formed in the inner wall of the cabinet door.

[0007] Preferably, a support plate is fixedly installed on the side wall of the gate body, and a toothed groove is opened on the outer wall of the support plate away from the gate body. A limiting disc is fixedly installed through the outer wall of the pull rod, and a locking block is fixedly installed on the outer wall of the limiting disc near the support plate.

[0008] Preferably, the inner diameters of the through hole and the contraction cavity are adapted to the outer diameter of the pull rod, and the side wall of the gate body is provided with a vertical plate, and the end of the sleeve is rotatably mounted on the side surface of the vertical plate.

[0009] Preferably, the number of the protruding strips is set to four sets, and the four sets of protruding strips are evenly distributed in a circumferential array on the arc-shaped inner wall of the contraction cavity. The number of the straight grooves is set to four sets, and the four sets of straight grooves are evenly distributed in a circumferential array on the arc-shaped outer wall of the pull rod. The size of the straight grooves is adapted to the protruding strips.

[0010] Preferably, an isolation cover is fixedly installed on the outer wall of the end of the gate arm away from the sleeve. The inner wall of the isolation cover has an arc-shaped groove, an inner isolation cavity and an outer isolation cavity, and a vent hole.

[0011] Preferably, the width of the arc-shaped groove is greater than the width of the left terminal, and the inner isolation cavity is disposed between the outer isolation cavity and the arc-shaped groove.

[0012] Preferably, the number of vent holes is provided in three sets, and the three sets of vent holes are respectively located between the arc-shaped groove and the inner isolation cavity, between the inner isolation cavity and the outer isolation cavity, and between the outer isolation cavity and the outer surface of the isolation cover, and the inner diameter of the three sets of vent holes gradually increases from the arc-shaped groove outward.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the cooperation and transmission of the sleeve, pull rod, pull ring, return spring, through hole, protrusion, straight groove, support plate, tooth groove, limiting plate, and locking block, the operator can control the closing and closing of the gate arm from outside the cabinet, avoiding direct contact or proximity to the gate body, thus improving the safety of the disconnecting switch during use. Furthermore, under the action of the return spring, the structure controlling the rotation of the gate arm is separated from the rotation center of the gate arm itself when not in operation, preventing accidental contact that could lead to a disconnection. Moreover, due to the cooperation between the locking block and the tooth groove, the positional stability of the gate arm during closing and closing is ensured, preventing accidental contact from affecting the circuit connection / disconnection status, thus improving the safety of the disconnecting switch during use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the entire utility model; Figure 2 This is a schematic diagram of the cabinet door removal structure of this utility model; Figure 3This is a schematic diagram of the gate structure of this utility model; Figure 4 This is a schematic diagram showing the pull rod and sleeve of this utility model in a separated state; Figure 5 This is a schematic diagram of the tie rod structure of this utility model; Figure 6 This is a schematic diagram of the limiting disk structure of this utility model; Figure 7 This is a cross-sectional schematic diagram of the isolation cover of this utility model.

[0015] The components represented by each number in the attached diagram are listed below: 1. Cabinet body; 2. Cabinet door; 3. Gate body; 4. Right terminal; 5. Gate arm; 6. Left terminal; 7. Sleeve; 8. Pull rod; 9. Pull ring; 10. Return spring; 11. Through hole; 12. Raised strip; 13. Straight groove; 14. Support plate; 15. Toothed groove; 16. Limiting disc; 17. Locking block; 18. Isolation cover; 19. Arc groove; 20. Inner isolation cavity; 21. Outer isolation cavity; 22. Vent hole; 23. Contraction cavity. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-7 The diagram shows a disconnect switch with safety components, including a cabinet 1. A cabinet door 2 is hinged to the front of the cabinet 1. A gate body 3 is fixedly installed on the inner wall of the cabinet 1. A right terminal 4 is fixedly installed on the top surface of the gate body 3. A left terminal 6 is fixedly installed on the side of the top surface of the gate body 3 away from the right terminal 4. A gate rod 5 is rotatably installed on the inner wall of the right terminal 4. A protective component is provided on the top of the gate body 3. The protective component includes a sleeve 7, which is rotatably installed on the upper surface of the gate body 3. A pull rod 8 is movably connected to the inner wall of the sleeve 7. A pull ring 9 is fixedly installed at the end of the pull rod 8 away from the sleeve 7. A contraction cavity 23 is opened in the inner wall of the sleeve 7. A return spring 10 is fixedly connected between the end of the pull rod 8 and the inner wall of the contraction cavity 23. A protrusion 12 is fixedly installed on the arc-shaped inner wall of the contraction cavity 23. A straight groove 13 is opened on the arc-shaped outer wall of the pull rod 8. A through hole 11 is opened in the inner wall of the cabinet door 2.

[0018] Please see Figure 1 , Figure 2 , Figure 3The bottom of the gate body 3 is equipped with a support frame to allow it to be positioned at a relatively high level within the cabinet 1. A round hole is provided on the back of the cabinet 1 for external wiring connection. Terminal blocks are provided on the sides of both the left terminal 6 and the right terminal 4, allowing them to be connected to external circuits. This enables circuit connection and disconnection under the control of the gate arm 5. Ventilation slots are provided on both sides of the cabinet 1 to ensure proper airflow and heat dissipation within the cabinet. The inner side of the left terminal 6 is provided with a contact groove that matches the width of the gate arm 5, so that the gate arm 5 can be electrically connected to the left terminal 6 when it enters the contact groove. In addition, the pull ring 9 allows the operator to insert his finger through the through hole 11, then fasten the pull ring 9 and pull it outward to pull the pull rod 8 outward a certain distance from the through hole 11. The return spring 10 ensures that the pull rod 8 is retracted inside the cabinet 1 under normal conditions, so that the entire cabinet 1 can protect the gate arm 5 when it is closed and opened.

[0019] A support plate 14 is fixedly installed on the side wall of the gate body 3. The outer wall of the support plate 14 away from the gate body 3 has a toothed groove 15. A limiting plate 16 is fixedly installed through the outer wall of the pull rod 8. A locking block 17 is fixedly installed on the outer wall of the limiting plate 16 near the support plate 14.

[0020] Please see Figure 4 , Figure 5 , Figure 6 The support plate 14 is set on the side of the gate body 3 near the cabinet door 2, so as to ensure that the axis of the through hole 11, pull ring 9, pull rod 8, return spring 10 and sleeve 7 are all on the same straight line, and the axis of the above structure is parallel to the bottom inner surface of the cabinet body 1, so as to facilitate the staff to pull out and control the pull rod 8. At the same time, the size of the tooth groove 15 is matched with the size of the locking block 17, and the edges of the locking block 17 are all rounded to avoid jamming between the tooth groove 15 and the locking block 17. The number of tooth grooves 15 and locking blocks 17 is set in multiple sets, and multiple sets of tooth grooves 15 and locking blocks 17 are arranged in a circumferential array at the arc-shaped outer edge of the pull rod 8.

[0021] The inner diameters of the through hole 11 and the contraction cavity 23 are both adapted to the outer diameter of the pull rod 8, and the side wall of the gate body 3 is provided with a vertical plate, and the end of the sleeve 7 is rotatably mounted on the side surface of the vertical plate.

[0022] Please see Figure 3The vertical plate and the support plate 14 work together to ensure the stable sliding of the pull rod 8 in the horizontal direction. The vertical plate can provide support for the sleeve 7. The sleeve 7 is connected to the gate arm 5 through and fixedly. The stable rotation of the sleeve 7 can realize the stable control of the rotation of the gate arm 5, thereby realizing the closing and closing operations. Moreover, due to the setting of the through hole 11 and the contraction cavity 23, the pull rod 8 can move horizontally inside the through hole 11 and the contraction cavity 23, avoiding motion interference.

[0023] There are four sets of convex strips 12, and the four sets of convex strips 12 are evenly distributed in a circular array on the arc-shaped inner wall of the contraction cavity 23. There are four sets of straight grooves 13, and the four sets of straight grooves 13 are evenly distributed in a circular array on the arc-shaped outer wall of the pull rod 8. The size of the straight grooves 13 is adapted to the convex strips 12.

[0024] Please see Figure 4 , Figure 5 After the four sets of protruding strips 12 enter the straight groove 13, the pull rod 8 and the sleeve 7 can only slide horizontally without relative rotation. They rotate in the same direction and at the same speed. Specifically, in the initial state, under the influence of the elastic force of the return spring 10, the pull rod 8 retracts into the contraction cavity 23 opened in the sleeve 7. At this time, the protruding strips 12 and the straight groove 13 are in a disengaged state. When the pull rod 8 is pulled outward, after the pull rod 8 moves a certain distance, the protruding strips 12 enter the straight groove 13. At this time, the operator rotates the pull ring 9 and the pull rod 8, thereby driving the sleeve 7 to rotate, thus realizing the closing and closing actions of the control gate 5.

[0025] An isolation cover 18 is fixedly installed on the outer wall of the end of the gate arm 5 away from the sleeve 7. An arc-shaped groove 19 is opened on the inner wall of the isolation cover 18. An inner isolation cavity 20 and an outer isolation cavity 21 are opened on the inner wall of the isolation cover 18. A vent hole 22 is opened on the inner wall of the isolation cover 18.

[0026] Please see Figure 7 The isolation cover 18 is made of lightweight fireproof material, which reduces the stress on the gate arm 5 when it deflects, and at the same time shields and protects the electric sparks that may occur when the end of the gate arm 5 is closed with the left terminal 6, so as to avoid the sparks caused by closing the circuit from affecting the safety of the circuit inside the cabinet 1.

[0027] The width of the arc-shaped groove 19 is greater than the width of the left terminal 6, and the inner isolation cavity 20 is disposed between the outer isolation cavity 21 and the arc-shaped groove 19.

[0028] Please see Figure 3 , Figure 7The arc groove 19 is designed so that when the gate arm 5 and the left terminal 6 are closed, they can completely retract into the arc groove 19. Any electrical sparks that may be generated will only burst outward and come into contact with the arc groove 19, and fall downward to the upper surface of the gate body 3 under the guidance of the inner surface of the arc groove 19.

[0029] There are three sets of vent holes 22, and the three sets of vent holes 22 are respectively located between the arc groove 19 and the inner isolation cavity 20, between the inner isolation cavity 20 and the outer isolation cavity 21, and between the outer isolation cavity 21 and the outer surface of the isolation cover 18. The inner diameter of the three sets of vent holes 22 gradually increases from the arc groove 19 outward.

[0030] Please see Figure 7 The vent 22 ensures that the end of the gate arm 5 and the left terminal 6 are not completely closed when the gate arm 5 is closed, allowing heat dissipation through the vent 22. Furthermore, the vent 22 in the isolation cover 18, with its gradually increasing inner diameter from the inside out, combined with the cavity design of the inner isolation chamber 20 and the outer isolation chamber 21, prevents electrical sparks from flying directly outwards, thus providing both obstruction and protection. Simultaneously, it ensures effective heat dissipation near the terminals when the circuit is connected, preventing overheating and potential electrical hazards.

[0031] Working principle: Connect the left terminal 6 and right terminal 4 to the wires that enter the cabinet 1 through the round hole, and insulate the connection points. Then close the cabinet door 2. At this time, the ends of the pull ring 9 and the pull rod 8 are near the through hole 11. When it is necessary to close or disconnect the circuit, the operator inserts their finger into the through hole 11 from the outside of the cabinet 1 and hooks the pull ring 9. At this time, pull the pull ring 9 and the pull rod 8 outward, causing the end of the pull rod 8 away from the pull ring 9 to slide in the contraction cavity 23, thereby allowing the straight groove 13 and the protrusion 12 to align. Then rotate the pull rod 8 to... The sleeve 7 rotates in the same direction and at the same speed, thereby controlling the closing and opening of the control lever 5. After closing or opening, the operator gradually releases the pull ring 9. Under the elastic force of the return spring 10, the pull rod 8 retracts into the contraction chamber 23. At this time, the convex strip 12 and the straight groove 13 disengage, realizing the transmission separation of the pull rod 8 and the sleeve 7. Finally, the end of the pull rod 8 with the pull ring 9 is completely inserted into the through hole 11, so that the operator is in a relatively safe environment to operate before and after closing or opening, thus improving the safety of the disconnecting switch.

[0032] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disconnector with a safety assembly, comprising a cabinet (1), characterized in that: A cabinet door (2) is hinged to the front of the cabinet (1). A gate (3) is fixedly installed on the inner wall of the cabinet (1). A right terminal (4) is fixedly installed on the top surface of the gate (3). A left terminal (6) is fixedly installed on the side of the top surface of the gate (3) away from the right terminal (4). A gate arm (5) is rotatably installed on the inner wall of the right terminal (4). A protective component is provided on the top of the gate (3). The protective component includes a sleeve (7). The sleeve (7) is rotatably installed on the upper surface of the gate (3). A pull rod (8) is movably connected to the inner wall of the sleeve (7). A pull ring (9) is fixedly installed at the end of the pull rod (8) away from the sleeve (7). A shrinkage cavity (23) is opened on the inner wall of the sleeve (7). A return spring (10) is fixedly connected between the end of the pull rod (8) and the inner wall of the shrinkage cavity (23). A protrusion (12) is fixedly installed on the arc-shaped inner wall of the shrinkage cavity (23). A straight groove (13) is opened on the arc-shaped outer wall of the pull rod (8). A through hole (11) is opened on the inner wall of the cabinet door (2).

2. The disconnector with a safety assembly according to claim 1, characterized in that: A support plate (14) is fixedly installed on the side wall of the gate body (3). The outer wall of the support plate (14) away from the gate body (3) has a toothed groove (15). A limiting plate (16) is fixedly installed through the outer wall of the pull rod (8). A locking block (17) is fixedly installed on the outer wall of the limiting plate (16) near the support plate (14).

3. The disconnector with a safety assembly according to claim 1, characterized in that: The inner diameters of the through hole (11) and the contraction cavity (23) are adapted to the outer diameter of the pull rod (8), and the side wall of the gate body (3) is provided with a vertical plate, and the end of the sleeve (7) is rotatably mounted on the side surface of the vertical plate.

4. The disconnector with a safety assembly according to claim 1, characterized in that: The number of the protruding strips (12) is set in four groups, and the four groups of protruding strips (12) are evenly distributed in a circular array on the arc-shaped inner wall of the contraction cavity (23). The number of the straight grooves (13) is set in four groups, and the four groups of straight grooves (13) are evenly distributed in a circular array on the arc-shaped outer wall of the pull rod (8). The size of the straight grooves (13) is adapted to the protruding strips (12).

5. The disconnector with a safety assembly according to claim 1, characterized in that: An isolation cover (18) is fixedly installed on the outer wall of the end of the gate arm (5) away from the sleeve (7). An arc groove (19) is opened on the inner wall of the isolation cover (18). An inner isolation cavity (20) and an outer isolation cavity (21) are opened on the inner wall of the isolation cover (18). A vent hole (22) is opened on the inner wall of the isolation cover (18).

6. The disconnector with a safety assembly according to claim 5, characterized in that: The width of the arc groove (19) is greater than the width of the left terminal (6), and the inner isolation cavity (20) is disposed between the outer isolation cavity (21) and the arc groove (19).

7. A disconnecting switch with a safety component according to claim 5, characterized in that: The number of vent holes (22) is set in three sets, and the three sets of vent holes (22) are respectively set between the arc groove (19) and the inner isolation cavity (20), between the inner isolation cavity (20) and the outer isolation cavity (21), and between the outer isolation cavity (21) and the outer surface of the isolation cover (18). The inner diameter of the three sets of vent holes (22) gradually increases from the arc groove (19) outward.

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