Ring main unit integrated operating mechanism

Abstract

Integrated operating mechanism for ring main unit. It mainly solves the problem that the three-station unit structure of the current integrated operating mechanism for ring main unit is relatively complex and requires a large installation space. The present invention provides an integrated operating mechanism for ring main unit, wherein the circuit breaker unit and the three-station operating unit are both arranged on the same mounting frame, and the three-station operating unit stores energy through elastic energy storage components for rapid disconnection. The three-station unit has a simple structure and does not require redundant components, thus reducing the required installation space. Preferably, the secondary components are all arranged on the outside of the mechanism for easy wiring, line checking, maintenance, replacement, etc.

Description

Technical Field

[0001] The invention relates to the field of high-voltage electrical appliances, and in particular to an integrated operating mechanism for a ring network cabinet. Background Art

[0002] Ring main unit is a group of electrical equipment (high voltage switchgear) installed in metal or non-metal insulated cabinet or assembled into interval ring main unit. Its core part uses load switch and fuse, which has the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, large public buildings, factories and enterprises and other load centers.

[0003] There is a kind of ring main unit on the market now, whose operating mechanism includes a circuit breaker unit and a three-station unit. The three-station unit has a relatively complex structure and requires a larger installation space. Summary of the invention

[0004] In order to overcome the shortcomings of the background technology, the present invention is designed to provide an integrated operating mechanism for a ring main unit, which mainly solves the problem that the three-station unit structure of the current integrated operating mechanism for a ring main unit is relatively complex and requires a larger installation space.

[0005] The technical solution adopted by the present invention is:

[0006] The integrated operating mechanism of the ring main unit comprises a mounting frame, on which a circuit breaker operating unit and a three-station operating unit are arranged, wherein the three-station operating unit comprises an isolating operating shaft and a grounding operating shaft rotatably mounted on the mounting frame,

[0007] The isolation operation shaft is provided with a first mounting plate that rotates synchronously.

[0008] The grounding operation shaft is provided with a second mounting plate which rotates synchronously.

[0009] It also includes an elastic energy storage member, one end of which is hinged to the first mounting plate, and the other end of which is hinged to the second mounting plate.

[0010] The mounting frame is also provided with a first stop pin and a second stop pin.

[0011] The isolation operating shaft includes a closing position when the first mounting plate is pressed against the first stop pin. When the isolation operating shaft is in the closing position, the elastic energy storage component contracts to store energy and applies force to press the first mounting plate against the first stop pin and press the second mounting plate against the second stop pin.

[0012] The elastic energy storage member includes a first rod and a second rod that are slidably matched, one end of the second rod extends into the second rod, the other end of the second rod is hinged to the second mounting plate, the first rod is hinged to the first mounting plate, and also includes an elastic member for applying force to the second rod in a direction away from the first rod.

[0013] The elastic member is a spring, which is sleeved outside the second rod. The first rod is provided with a first retaining wall, and the second rod is provided with a second retaining wall. The front end face of the spring is pressed against the first retaining wall, and the rear end face is pressed against the second retaining wall.

[0014] The first mounting plate comprises an upper plate and a lower plate, a connecting shaft is arranged between the upper plate and the lower plate, and a through hole which is gap-matched with the connecting shaft is arranged on the first rod.

[0015] The first mounting plate is provided with a groove corresponding to the first stop pin.

[0016] The mounting frame comprises a front plate, a middle plate and a mounting plate, and an energy storage travel switch and an energy storage motor are mounted on the front plate.

[0017] An opening coil and a closing coil are installed on the middle plate, a first avoidance groove is provided on the front plate corresponding to the opening coil and the closing coil, an auxiliary switch is also installed on the middle plate, and a second avoidance groove is provided on the front plate corresponding to the auxiliary switch.

[0018] The mounting frame is also provided with a hinged first interlock plate, one end of the first interlock plate is arranged corresponding to the auxiliary switch, and the other end is arranged corresponding to the isolation operating shaft. The auxiliary switch is provided with a first baffle rod, and the first baffle rod is used to press against the bottom of the first interlock plate when the circuit breaker is closed, so that one end of the first interlock plate is arranged corresponding to the front of the isolation operating shaft so that the operating shaft cannot be manually operated.

[0019] The front plate is also provided with a padlock plate, and the padlock plate is correspondingly arranged below the isolation operating shaft.

[0020] The mounting frame is also provided with a hinged second interlock plate, and the mounting frame is also provided with a closing knob. The closing knob is provided with a second baffle rod that rotates synchronously, and the isolation operating shaft is provided with a third baffle rod. One end of the second interlock plate is arranged corresponding to the second baffle rod, and the other end is arranged corresponding to the isolation operating shaft. When the isolation operating shaft is in the opening position, one end of the second interlock plate is pressed against the third baffle rod, and the other end is pressed against the second baffle rod, so that the closing knob cannot be rotated in the closing direction.

[0021] The beneficial effects of the present invention are as follows: the present invention provides an integrated operating mechanism for a ring main unit, wherein the circuit breaker unit and the three-station operating unit are both arranged on the same mounting frame, and the three-station operating unit stores energy through elastic energy storage components for rapid disconnection. The three-station unit has a simple structure, does not require redundant components, and reduces the required installation space. Preferably, the secondary components are all arranged on the outside of the mechanism to facilitate wiring, line checking, maintenance, replacement, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0023] Figure 2 It is a rear view schematic diagram of an embodiment of the present invention (mounting plate omitted).

[0024] Figure 3 It is a three-dimensional schematic diagram of an elastic energy storage member according to an embodiment of the present invention.

[0025] Figure 4 It is a cross-sectional schematic diagram of an elastic energy storage member according to an embodiment of the present invention.

[0026] Figure 5 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0027] Figure 6 It is a partial three-dimensional schematic diagram of an embodiment of the present invention.

[0028] Figure 7 It is a partial three-dimensional schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The invention is further described below in conjunction with the accompanying drawings: as shown in the figure, the integrated operating mechanism of the ring main unit includes a mounting frame 1, on which a circuit breaker operating unit 2 and a three-position operating unit 3 are provided, and the three-position operating unit includes an isolating operating shaft 31 and a grounding operating shaft 32 rotatably mounted on the mounting frame, the isolating operating shaft is provided with a first mounting plate 311 that rotates synchronously, and the grounding operating shaft is provided with a second mounting plate 321 that rotates synchronously, and also includes an elastic energy storage member 4, one end of the elastic energy storage member is hinged to the first mounting plate, and the other end is hinged to the second mounting plate, and the mounting frame is also provided with a first stop pin 16 and a second stop pin 17, the isolating operating shaft includes a closing position when the first mounting plate is pressed against the first stop pin, and when the isolating operating shaft is in the closing position, the elastic energy storage member contracts to store energy and applies force to press the first mounting plate against the first stop pin, and press the second mounting plate against the second stop pin.

[0030] When the isolation operating shaft is in the closed position (see Figure 2), the top of the first mounting plate is pressed against the first stop pin, and the elastic energy storage component provided between the first mounting plate and the second mounting plate contracts to store energy, and applies force to press the first mounting plate against the first stop pin, and press the second mounting plate against the second stop pin. At this time, the first mounting plate cannot rotate clockwise, the isolation operating shaft cannot rotate clockwise, and the second mounting plate cannot rotate counterclockwise, and the grounding operating shaft cannot rotate. The entire mechanism is in a stable state. When disconnection is required, the isolation operating shaft is rotated counterclockwise. After rotating a certain angle, the elastic energy storage component releases energy and disconnects quickly. The three-station unit has a simple structure, does not require redundant components, and reduces the required installation space.

[0031] In this embodiment, as shown in the figure, the elastic energy storage member includes a first rod 41 and a second rod 42 that are slidably matched, one end of the second rod extends into the second rod, the other end of the second rod is hinged to the second mounting plate, the first rod is hinged to the first mounting plate, and also includes an elastic member 43 for applying force to the second rod away from the first rod. When the elastic energy storage member contracts to store energy, the first rod is inserted into the second rod, and the spring contracts to store energy.

[0032] In this embodiment, as shown in the figure, the elastic member is a spring, the spring is sleeved outside the second rod, the first rod is provided with a first retaining wall 411, the second rod is provided with a second retaining wall 421, the front end face of the spring is pressed against the first retaining wall, and the rear end face is pressed against the second retaining wall. This structure is stable in use and simple in structure.

[0033] In this embodiment, as shown in the figure, the first mounting plate includes an upper plate 3110 and a lower plate, a connecting shaft 3112 is disposed between the upper plate and the lower plate, and a through hole 412 is disposed on the first rod to be loosely matched with the connecting shaft. The second mounting plate here can also adopt the same structure.

[0034] In this embodiment, as shown in the figure, the first mounting plate is provided with a groove 3113 corresponding to the first stop pin. After being in place, the first stop pin falls into the groove, which is more stable.

[0035] In this embodiment, as shown in the figure, the mounting frame includes a front plate 11, a middle plate 12 and a mounting plate 13, and the front plate is mounted with an energy storage travel switch 111 and an energy storage motor 112. The secondary components of the traditional ring network cabinet operating mechanism are usually set inside or in the middle, which is difficult to detect, plug in and repair. The present application is set on the front plate for easy maintenance.

[0036] In this embodiment, as shown in the figure, the middle plate is equipped with an opening coil 121 and a closing coil 122, the front plate is provided with a first avoidance groove 113 corresponding to the opening coil and the closing coil, the middle plate is also equipped with an auxiliary switch 123, and the front plate is provided with a second avoidance groove 114 corresponding to the auxiliary switch. Some secondary components arranged on the middle plate are provided with avoidance grooves on the front plate for maintenance and detection.

[0037] In this embodiment, as shown in the figure, the mounting frame is further provided with a hinged first interlock plate 5, one end of the first interlock plate is arranged corresponding to the auxiliary switch, and the other end is arranged corresponding to the isolation operating shaft. The auxiliary switch is provided with a first baffle 1231, and the first baffle is used to press against the bottom of the first interlock plate when the circuit breaker is closed, so that one end of the first interlock plate is arranged correspondingly in front of the isolation operating shaft so that the operating shaft cannot be manually operated. When the isolation operating shaft is operated, the operating handle can be inserted and rotated. When the circuit breaker is closed, one end of the first interlock plate is arranged in front of the isolation operating shaft so that the operating handle cannot be inserted and installed, thereby ensuring interlocking and making it safer to use.

[0038] In this embodiment, as shown in the figure, the front plate is further provided with a padlock plate 115, and the padlock plate is correspondingly arranged below the isolation operation shaft to control the rotation stroke of the first interlocking plate so that it cannot rotate excessively clockwise.

[0039] In this embodiment, as shown in the figure, a hinged second interlocking plate 6 is also provided on the mounting frame, a closing knob 61 is also provided on the mounting frame, a second baffle rod 611 that rotates synchronously is provided on the closing knob, a third baffle rod 316 is provided on the isolation operating shaft, one end of the second interlocking plate is arranged corresponding to the second baffle rod, and the other end is arranged corresponding to the isolation operating shaft. When the isolation operating shaft is in the opening position, one end of the second interlocking plate is pressed against the third baffle rod, and the other end is pressed against the second baffle rod, so that the closing knob cannot be rotated in the closing direction.

[0040] As an optional solution, when the circuit breaker is closed, the first interlock plate blocks the isolation operation hole, and the operating handle cannot be inserted for operation, to avoid forced misoperation; when the isolation is in the open position, the second interlock plate moves down to block the circuit breaker closing knob, and the circuit breaker cannot be closed. The isolation and grounding operation holes are interlocked by moving the padlock plate up and down, the isolation is closed, the grounding operation hole is blocked, and the grounding is closed, the isolation operation hole is blocked. The whole set of interlocking is simple and reliable, and has high error prevention.

[0041] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. An integrated operating mechanism for a ring main unit, comprising a mounting frame (1), on which a circuit breaker operating unit (2) and a three-station operating unit (3) are arranged, characterized in that: The three-station operating unit comprises an isolation operating shaft (31) and a grounding operating shaft (32) rotatably mounted on a mounting frame. The isolation operation shaft is provided with a first mounting plate (311) that rotates synchronously. The grounding operation shaft is provided with a second mounting plate (321) that rotates synchronously. The three-station operating unit further comprises an elastic energy storage member (4), one end of the elastic energy storage member being hinged to the first mounting plate, and the other end of the elastic energy storage member being hinged to the second mounting plate. The mounting frame is also provided with a first stop pin (16) and a second stop pin (17). The isolation operation shaft includes a closing position when the first mounting plate is pressed against the first stop pin. When the isolation operation shaft is in the closing position, the elastic energy storage member contracts and stores energy and applies force to press the first mounting plate against the first stop pin and the second mounting plate against the second stop pin; The first mounting plate is provided with a groove (3113) corresponding to the first stop pin; The mounting frame includes a front plate (11), a middle plate (12) and a mounting plate (13), and an energy storage travel switch (111) and an energy storage motor (112) are mounted on the front plate; An opening coil (121) and a closing coil (122) are mounted on the middle plate, a first avoidance groove (113) is provided on the front plate corresponding to the opening coil and the closing coil, an auxiliary switch (123) is also mounted on the middle plate, and a second avoidance groove (114) is provided on the front plate corresponding to the auxiliary switch; The mounting frame is also provided with a hinged first interlock plate (5), one end of the first interlock plate being arranged corresponding to the auxiliary switch, and the other end being arranged corresponding to the isolation operating shaft. The auxiliary switch is provided with a first blocking rod (1231), the first blocking rod being used to press against the bottom of the first interlock plate when the circuit breaker is closed, so that one end of the first interlock plate is arranged corresponding to the front of the isolation operating shaft so that the isolation operating shaft cannot be manually operated.

2. The integrated operating mechanism of the ring main unit according to claim 1 is characterized in that: The elastic energy storage member comprises a first rod (41) and a second rod (42) that are slidably engaged with each other. One end of the second rod extends into the first rod, the other end of the second rod is hinged to the second mounting plate, the first rod is hinged to the first mounting plate, and the elastic energy storage member further comprises an elastic member (43) for applying force to the second rod in a direction away from the first rod.

3. The integrated operating mechanism of the ring main unit according to claim 2 is characterized in that: The elastic member is a spring, which is sleeved outside the second rod. The first rod is provided with a first retaining wall (411), and the second rod is provided with a second retaining wall (421). The front end face of the spring is pressed against the first retaining wall, and the rear end face is pressed against the second retaining wall.

4. The integrated operating mechanism of the ring main unit according to claim 3 is characterized in that: The first mounting plate comprises an upper plate (3110) and a lower plate, a connecting shaft (3112) is provided between the upper plate and the lower plate, and the first rod is provided with a through hole (412) that is clearance-matched with the connecting shaft.

5. The integrated operating mechanism of the ring main unit according to claim 1 is characterized in that: The front plate is also provided with a padlock plate (115), and the padlock plate is correspondingly arranged below the isolation operation shaft.

6. The integrated operating mechanism of the ring main unit according to claim 5, characterized in that: The mounting frame is also provided with a hinged second interlocking plate (6), the mounting frame is also provided with a closing knob (61), the closing knob is provided with a second blocking rod (611) that rotates synchronously, the isolation operating shaft is provided with a third blocking rod (316), one end of the second interlocking plate is arranged corresponding to the second blocking rod, and the other end is arranged corresponding to the isolation operating shaft. When the isolation operating shaft is in the opening position, one end of the second interlocking plate presses against the third blocking rod, and the other end presses against the second blocking rod, so that the closing knob cannot be rotated in the closing direction.

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