A disconnecting isolation blocking device for power systems

Abstract

The application discloses a kind of disconnecting isolation locking device for power system, including shell, the inside of the shell is equipped with moving seat by quick reciprocating drive mechanism, the side of the moving seat is fixed with first fixed seat, first fixed seat is penetrated with electrically conductive column, the both ends of the electrically conductive column are fixed with electrically conductive head, the inside of the shell is equipped with first contact mechanism and second contact mechanism, the first contact mechanism includes mounting seat, electrically conductive plate, clamping block, first spring, electromagnet, sliding seat, the mounting seat is U-shaped, the inside of the mounting seat is equipped with clamping block by electromagnet on both sides, first spring is connected between the clamping block and mounting seat, the inside of the mounting seat is equipped with sliding seat, and the sliding seat is fixed with electrically conductive plate.The application is safe and reliable in operation, and is fast in response, and stable in connection.

Description

Technical Field

[0001] This invention relates to the field of power safety protection technology, and in particular to a disconnection, isolation, and interlocking device for power systems. Background Technology

[0002] In power systems, every component in the circuit breaker's opening and closing system is crucial, but isolation devices and grounding devices are particularly critical due to their performance and function. Isolation devices and grounding devices are two independent units. To achieve interlocking between them and between them and the circuit breaker, current practices mostly involve installing multiple sets of mechanical interlocking devices. For added safety and reliability, multiple sets of electrical interlocking devices are also installed. However, this approach causes the electrical interlocking devices to fail directly in the event of undervoltage or power failure.

[0003] The locking mechanism in mother-of-the-wood systems often uses a plug-in type pressure plate, mainly consisting of a base and a plug. The base has two sockets, and the plug has two corresponding conductive pins. Inserting or removing the plug controls the continuity of the circuits connected to the two sockets. During maintenance, the pressure plate must be removed, and insulating tape must be used to seal one side of the sockets for insulation. This process is cumbersome and has drawbacks such as easy detachment, high cost, and non-reusability. It only serves a warning function and cannot achieve forced locking of the pressure plate. To address these issues, we propose... Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a disconnection, isolation, and interlocking device for power systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A power system disconnection and interlocking device includes a housing. Inside the housing, a movable base is mounted via a rapid reciprocating drive mechanism. A first fixed base is fixed to the side of the movable base. A conductive post passes through the first fixed base, and conductive heads are fixed to both ends of the conductive post. Inside the housing, a first contact mechanism and a second contact mechanism are installed. The first contact mechanism includes a mounting base, a conductive plate, a clamping block, a first spring, an electromagnet, and a slide. The mounting base is U-shaped, and clamping blocks are mounted on both sides of the mounting base via electromagnets. A first spring connects the clamping blocks and the mounting base. Inside the mounting base, a slide is installed, and a conductive plate is fixed on the slide.

[0006] Furthermore, the side of the housing is provided with a center position indicator, a first contact conduction indicator, and a second contact conduction indicator.

[0007] Furthermore, an operating hole is provided on the side of the housing, a door panel is installed on the operating hole, and a sealing ring is provided between the door panel and the housing.

[0008] Furthermore, the movable seat is C-shaped, and a guide mechanism is installed on the movable seat.

[0009] Furthermore, the guiding mechanism includes a guide post and a limiting block. The guide post is fixed inside the housing and slides through the movable seat. One end of the guide post is fixed with a limiting block.

[0010] Furthermore, the rapid reciprocating drive mechanism includes a second fixed seat, a motor, a third fixed seat, a rack, a rotating shaft, a worm, a gear, and a worm wheel. The second fixed seat is fixed inside the housing, and the motor is mounted on the second fixed seat. The worm wheel is mounted on the output shaft of the motor. The third fixed seat is fixed to the side of the second fixed seat, and the rotating shaft is rotatably mounted on the third fixed seat. The worm and gear are mounted on the rotating shaft, and the rack is fixed on the movable seat.

[0011] Furthermore, the gear meshes with the rack for transmission, and the worm meshes with the worm wheel for transmission.

[0012] Furthermore, the first contact mechanism and the second contact mechanism have completely identical structures.

[0013] Furthermore, the mounting base has a sliding groove inside, and the sliding groove is connected to the slide block by a second spring.

[0014] Furthermore, the clamping block is L-shaped, and a first slider is fixed on the clamping block. The first slider is slidably mounted on the mounting base, and a second slider is fixed on both sides of the mounting base. The second slider is slidably mounted in the groove of the mounting base.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the motor drives the worm gear to rotate, and the worm gear can drive the worm to rotate through meshing with the worm. The worm gear is the driving wheel and the worm is the driven wheel. The worm rotates at a high speed, which can quickly drive the rotating shaft to rotate. The rotating shaft drives the gear to rotate quickly, and the gear drives the rack to move quickly, so the response is very fast. The guide post can improve the stability of the moving seat. 2. In this invention, when the conductive head is not connected to either the first contact mechanism or the second contact mechanism, it is in a neutral position, and the neutral position indicator light is on. When the conductive head is connected to the first contact mechanism, the first contact conduction indicator light is on. When conduction occurs, the conductive head moves and pushes the two clamping blocks to one side. When the conductive head is inserted between the two clamping blocks, it will be locked between the two clamping blocks under the action of the first spring. At this time, the conductive head is electrically connected to the conductive plate. Under the action of the second spring, the conductive head and the conductive plate can be kept in close contact, improving the stability of the connection. When the conductive head is connected to the second contact mechanism, the second contact conduction indicator light is on. 3. In this invention, the conductive head can only be connected to either the first contact mechanism or the second contact mechanism, and cannot be connected to both simultaneously, thereby achieving interlocking between the first contact mechanism and the second contact mechanism, ensuring reliable connection.

[0016] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained from the following description and the foregoing claims. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a power system disconnection and interlocking device proposed in this invention; Figure 2 This is a schematic diagram of the first contact mechanism of a power system disconnection and interlocking device proposed in this invention; Figure 3 This is a schematic diagram of the structure of a fast reciprocating drive mechanism for a power system switching isolation and interlocking device proposed in this invention; Figure 4 This is a schematic diagram of the guiding mechanism of a power system disconnection and isolation interlocking device proposed in this invention.

[0018] In the diagram: 1. Housing; 2. Neutral indicator light; 3. First contact conduction indicator light; 4. Second contact conduction indicator light; 5. Rapid reciprocating drive mechanism; 51. Second fixed seat; 52. Motor; 53. Third fixed seat; 54. Rack; 55. Rotating shaft; 56. Worm gear; 57. Gear; 58. Worm wheel; 6. Guide mechanism; 61. Guide post; 62. Limiting block; 7. Moving seat; 8. Sealing ring; 9. Door panel; 10. Conductive post; 11. First fixed seat; 12. Conductive head; 13. First contact mechanism; 131. Mounting seat; 132. Conductive plate; 133. Clamping block; 134. First spring; 135. Electromagnet; 136. First slider; 137. Slide seat; 138. Second spring; 139. Second slider; 14. Second contact mechanism. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In the description of this invention, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] like Figure 1 , Figure 2As shown, a power system disconnection and interlocking device according to this embodiment includes a housing 1. A movable seat 7 is mounted inside the housing 1 via a rapid reciprocating drive mechanism 5. A first fixed seat 11 is fixed to the side of the movable seat 7. A conductive post 10 passes through the first fixed seat 11, and conductive heads 12 are fixed to both ends of the conductive post 10. A first contact mechanism 13 and a second contact mechanism 14 are installed inside the housing 1. The first contact mechanism 13 includes a mounting base 131, a conductive plate 132, a clamping block 133, a first spring 134, an electromagnet 135, and a slide 137. The mounting base 131 is U-shaped. Clamping blocks 133 are mounted on both sides of the mounting base 131 via electromagnets 135. A first spring 134 connects the clamping blocks 133 and the mounting base 131. A slide 137 is installed inside the mounting base 131. A conductive plate 132 is fixed on the slide 137. The first contact mechanism 13 and the second contact mechanism 14 have the same structure. The mounting base 131 has a sliding groove inside. The sliding groove is connected to the slide 137 by a second spring 138. The clamping block 133 is L-shaped. A first slider 136 is fixed on the clamping block 133. The first slider 136 is slidably mounted on the mounting base 131. A second slider 139 is fixed on both sides of the slide 137. The second slider 139 is slidably mounted in the sliding groove of the mounting base 131. A neutral position indicator light 2, a first contact conduction indicator light 3, and a second contact conduction indicator light 4 are provided on the side of the housing 1. An operation hole is provided on the side of the housing 1. A door panel 9 is installed on the operation hole. A sealing ring 8 is provided between the door panel 9 and the housing 1. The movable base 7 is C-shaped. A guide mechanism 6 is installed on the movable base 7.

[0024] Reference Figure 4 The guiding mechanism 6 includes a guide post 61 and a limiting block 62. The guide post 61 is fixed inside the housing 1 and slides through the movable seat 7. One end of the guide post 61 is fixed with the limiting block 62.

[0025] Reference Figure 3 The rapid reciprocating drive mechanism 5 includes a second fixed seat 51, a motor 52, a third fixed seat 53, a rack 54, a rotating shaft 55, a worm 56, a gear 57, and a worm wheel 58. The second fixed seat 51 is fixed inside the housing 1. The motor 52 is mounted on the second fixed seat 51. The worm wheel 58 is mounted on the output shaft of the motor 52. The third fixed seat 53 is fixed to the side of the second fixed seat 51. The rotating shaft 55 is rotatably mounted on the third fixed seat 53. The worm 56 and the gear 57 are mounted on the rotating shaft 55. The rack 54 is fixed on the movable seat 7. The gear 57 meshes with the rack 54 for transmission, and the worm 56 meshes with the worm wheel 58 for transmission.

[0026] The working principle of this invention is as follows: In this invention, the motor 52 drives the worm gear 58 to rotate. The worm gear 58, through meshing with the worm 56, drives the worm 56 to rotate. The worm gear 58 acts as the driving gear, and the worm 56 acts as the driven gear. The worm 56 rotates at a high speed, which can quickly drive the rotating shaft 55 to rotate. The rotating shaft 55 drives the gear 57 to rotate quickly, and the gear 57 drives the rack 54 to move quickly, resulting in a very fast response. The guide post 61 can improve the stability of the movement of the moving seat 7. When the conductive head 12 is not connected to either the first contact mechanism 13 or the second contact mechanism 14, it is in the neutral position, and the neutral position indicator light 2 is lit. When the conductive head 12 is connected to the first contact mechanism 13, the first contact conduction indicator light 3 is lit. When conducting, the conductive head 12 moves and pushes the two clamping blocks 133 to one side. When the conductive head 12 is inserted between the two clamping blocks 133, it will be stuck between the two clamping blocks 133 under the action of the first spring 134. At this time, the conductive head 12 is electrically connected to the conductive plate 132. Under the action of the second spring 138, the conductive head 12 and the conductive plate 132 can be kept in close contact, improving the stability of the connection. When the conductive head 12 is connected to the second contact mechanism 14, the second contact conduction indicator light 4 is lit. The conductive head 12 can only be connected to one of the first contact mechanism 13 and the second contact mechanism 14, and cannot be connected to both at the same time, so that the first contact mechanism 13 and the second contact mechanism 14 can be locked and the connection is reliable.

[0027] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power system disconnection and interlocking device, comprising a housing (1), characterized in that, Inside the housing (1), a movable seat (7) is installed via a rapid reciprocating drive mechanism (5). A first fixed seat (11) is fixed to the side of the movable seat (7). A conductive post (10) passes through the first fixed seat (11). Conductive heads (12) are fixed to both ends of the conductive post (10). Inside the housing (1), a first contact mechanism (13) and a second contact mechanism (14) are installed. The first contact mechanism (13) includes a mounting base (131), a conductive plate (132), a clamping block (133), a first spring (134), an electromagnet (135), and a slide (137). The mounting base (131) is U-shaped. Clamping blocks (133) are installed on both sides of the inside of the mounting base (131) via electromagnets (135). A first spring (134) connects the clamping blocks (133) and the mounting base (131). The mounting base (131) has a slide (137) installed inside, and a conductive plate (132) is fixed on the slide (137); the rapid reciprocating drive mechanism (5) includes a second fixed base (51), a motor (52), a third fixed base (53), a rack (54), a rotating shaft (55), a worm (56), a gear (57), and a worm wheel (58). The second fixed base (51) is fixed inside the housing (1). The motor (52) is installed on the second fixed base (51). The output shaft of the motor (52) is equipped with a worm wheel (58). The third fixed base (53) is fixed on the side of the second fixed base (51). The rotating shaft (55) is rotatably installed on the third fixed base (53). The worm (56) and the gear (57) are installed on the rotating shaft (55). The rack (54) is fixed on the moving base (7).

2. The power system disconnection and interlocking device according to claim 1, characterized in that, The side of the housing (1) is provided with a center position indicator (2), a first contact conduction indicator (3), and a second contact conduction indicator (4).

3. The power system disconnection and interlocking device according to claim 1, characterized in that, An operating hole is provided on the side of the housing (1), and a door panel (9) is installed on the operating hole. A sealing ring (8) is provided between the door panel (9) and the housing (1).

4. The power system disconnection and interlocking device according to claim 1, characterized in that, The movable seat (7) is C-shaped, and a guide mechanism (6) is installed on the movable seat (7).

5. A power system disconnection and interlocking device according to claim 4, characterized in that, The guiding mechanism (6) includes a guide post (61) and a limiting block (62). The guide post (61) is fixed inside the housing (1). The guide post (61) slides through the movable seat (7). One end of the guide post (61) is fixed with the limiting block (62).

6. A power system disconnection and interlocking device according to claim 1, characterized in that, The gear (57) meshes with the rack (54) for transmission, and the worm (56) meshes with the worm wheel (58) for transmission.

7. A power system disconnection and interlocking device according to claim 1, characterized in that, The first contact mechanism (13) and the second contact mechanism (14) have the same structure.

8. A power system disconnection and interlocking device according to claim 1, characterized in that, The mounting base (131) has a sliding groove inside, and the sliding groove is connected to the slide block (137) by a second spring (138).

9. A power system disconnection and interlocking device according to claim 1, characterized in that, The clamping block (133) is L-shaped, and a first slider (136) is fixed on the clamping block (133). The first slider (136) is slidably mounted on the mounting base (131). A second slider (139) is fixed on both sides of the slide base (137). The second slider (139) is slidably mounted in the groove of the mounting base (131).

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