CN219041045U

CN219041045U - Climbing-free distribution transformer grounding device

Info

Publication number: CN219041045U
Application number: CN202223157331.5U
Authority: CN
Inventors: 杨仁万; 吴桂生; 纪树雄; 雷兴才
Original assignee: Wenshan Power Supply Branch of Yunnan Power Grid Co Ltd
Current assignee: Wenshan Power Supply Branch of Yunnan Power Grid Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-16
Anticipated expiration: 2032-11-28

Abstract

The application discloses exempt from distribution transformer earthing device of ascending a height, the device includes: the integrated power distribution box is internally provided with a circuit breaker, the grounding cabinet is provided with an installation door, the grounding cabinet is internally provided with a disconnecting switch, the circuit breaker is electrically connected with the disconnecting switch through three phase lines, the installation door is provided with an electromagnetic lock for detecting the closing state of the circuit breaker, and when the circuit breaker is disconnected, the electromagnetic lock is powered off, demagnetized and in an opening state; when the circuit breaker is closed or turned on due to failure, the electromagnetic latch is energized and in an off state. By adopting the device, the possibility of electric shock of a worker in the overhaul process is reduced due to the fact that the circuit breaker is still electrified due to other reasons after the circuit breaker is closed, and the safety degree of the maintainer in the overhaul process is improved.

Description

Climbing-free distribution transformer grounding device

Technical Field

The application relates to the field of distribution transformers, in particular to a climbing-free distribution transformer grounding device.

Background

Distribution transformer, abbreviated as "distribution transformer", refers to a static electric appliance in a distribution system for transmitting ac power by converting ac voltage and current according to the law of electromagnetic induction.

In the use process of the existing distribution transformer, the regular maintenance operation is required for the distribution transformer, so that the normal operation of the distribution transformer is ensured, and the distribution transformer is required to be disassembled and assembled to observe the working condition inside the distribution transformer in the maintenance process.

In existing distribution transformer overhaul schemes, the inventors found that there are at least the following problems: when the circuit breaker is attached, due to the fact that the circuit breaker is packaged well, whether the circuit breaker is in a working state or not cannot be judged through observing the circuit breaker, then, an operator is easy to attach in the working state of the circuit breaker, and then, the problem that the operator gets an electric shock is caused.

Disclosure of Invention

The utility model provides a distribution transformer earthing device exempts from to ascend a height to solve because the encapsulation of circuit breaker is intact, lead to unable mode through observing the circuit breaker to judge whether the circuit breaker is in operating condition, lead to then that the staff carries out the dress operation under circuit breaker operating condition easily, lead to then the problem that the staff electrocuted.

In a first aspect, an embodiment of the present application provides a no-climb distribution transformer grounding device, including: the ascending-free distribution transformer grounding device comprises: the integrated power distribution box is internally provided with a circuit breaker, the grounding cabinet is provided with an installation door, the grounding cabinet is internally provided with a disconnecting switch, the circuit breaker is electrically connected with the disconnecting switch through three phase lines, the installation door is provided with an electromagnetic lock for detecting the closing state of the circuit breaker, and when the circuit breaker is disconnected, the electromagnetic lock is powered off, demagnetized and in an opening state; when the circuit breaker is closed or turned on due to failure, the electromagnetic latch is energized and in an off state.

Through the technical scheme, when a worker needs to overhaul the distribution transformer, the worker can turn off the circuit breaker in the comprehensive distribution box first, and after the circuit breaker is turned off, the worker judges whether the circuit breaker is powered off or not through the electromagnetic locking state, so that the situation that the circuit breaker is still electrified due to other reasons after the circuit breaker is turned off is reduced, the possibility of electric shock of the worker in an overhaul process is improved, and the safety degree of the overhaul worker in the overhaul process is improved.

In a specific implementation manner, the comprehensive distribution box is provided with a plurality of hoops, the hoops are clamped on the electric pole, the grounding cabinet is provided with a plurality of hoops, and the hoops are clamped on the electric pole.

Through the technical scheme, the setting of staple bolt makes block terminal and earthing cabinet can preset on the pole for the staff need not to step on the pole and tests the electricity, install the work of earth connection, has reduced the staff and has stepped on the possibility of pole in-process weighing down the pole, thereby has promoted the security of staff at the maintenance in-process.

In a specific embodiment, the grounding cabinet is rotatably connected with a mounting outer door, and a mechanical lock is arranged on the mounting outer door.

Through the technical scheme, the safety performance of the electromagnetic lock is further enhanced by the mechanical lock, the possibility of short circuit damage of the electromagnetic lock caused by penetration of dust or rainwater into the electromagnetic lock in extreme weather is reduced, and therefore the service life of the electromagnetic lock is prolonged.

In a specific embodiment, the cabinet body, the mounting door and the mounting outer door of the grounding cabinet are made of stainless steel materials.

Through above-mentioned technical scheme, the setting of stainless steel material makes cabinet body and cabinet door not fragile under external environment erosion to further promoted the life of earthing cabinet and comprehensive switch board.

In a specific embodiment, the isolating switch is fixedly connected to the inner wall of the grounding cabinet through a plurality of bolts.

Through above-mentioned technical scheme, the connection stability between isolator and the earthing cabinet has been strengthened in the setting of bolt for isolator is difficult for falling from the earthing cabinet inner wall under the exogenic action, thereby has promoted isolator's stability.

In a specific implementation manner, the isolating switch is provided with a plurality of wiring holes, the isolating switch is connected with a plurality of fixing bolts in a threaded manner, and the three-phase line is abutted between the fixing bolts and the hole walls of the wiring holes.

Through the technical scheme, the three-phase line can be stably connected between the comprehensive power distribution cabinet and the grounding cabinet due to the arrangement of the wiring holes and the fixing bolts, so that the stability of three-phase line connection is improved

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a grounding device of a distribution transformer without ascending according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an isolating switch according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram for embodying a circuit breaker according to an embodiment of the present application.

1. A comprehensive distribution box; 2. a grounding cabinet; 3. a circuit breaker; 4. installing a door; 5. an isolating switch; 6. three phase lines; 7. electromagnetic locking; 8. a hoop; 9. installing an outer door; 10. mechanical locking; 11. a wiring hole;

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

The application provides a distribution transformer earthing device exempts from to ascend a height to solve among the prior art artifical maintenance distribution transformer's easy electric shock's problem.

Referring to fig. 1, 2 and 3, there is shown a no-climb distribution transformer grounding apparatus, the apparatus comprising: the comprehensive distribution box 1 and the grounding cabinet 2 are arranged in parallel, a breaker 3 is arranged in the comprehensive distribution box 1, an installation door 4 is arranged on the grounding cabinet 2, a disconnecting switch 5 is arranged in the grounding cabinet 2, the breaker 3 and the disconnecting switch 5 are electrically connected through three-phase lines 6, and an electromagnetic lock 7 for detecting the closing state of the breaker 3 is arranged on the installation door 4; when the breaker 3 is opened, the electromagnetic lock 7 is powered off and loses magnetism and is in an open state, and a worker can open the installation door 4; when the circuit breaker 3 is closed or turned on due to a fault, the electromagnetic latch 7 is electrified to be magnetized and is in an off state, and a worker cannot open the installation door 4. Therefore, when the maintenance operation is needed, a worker can firstly disconnect the circuit breaker 3 through the operating lever, then open the electromagnetic lock 7 through the operating lever, and when the electromagnetic lock 7 can be smoothly opened, the circuit breaker 3 is proved to smoothly disconnect the circuit, so that the worker can safely carry out the maintenance operation; when the electromagnetic lock 7 cannot be opened, it is proved that the circuit breaker 3 is not closed or fails to be closed, and then a worker is required to confirm the line again until the line is opened, and the electromagnetic lock 7 cannot be opened.

Referring to fig. 3, two anchor clamps 8 are fixedly connected with on the comprehensive distribution box 1, and two anchor clamps 8 evenly set up on the comprehensive distribution box 1 along vertical direction, and two anchor clamps 8 of fixedly connected with on the earthing cabinet, two anchor clamps 8 evenly set up on the earthing cabinet along vertical direction, and comprehensive distribution box 1 supports tightly on the pole through two anchor clamps 8, and the earthing cabinet also supports tightly on the pole through two anchor clamps 8. Therefore, the comprehensive power distribution cabinet and the grounding cabinet can be respectively arranged on the electric pole in advance, so that workers do not need to manually log on the electric pole to test electricity and install a grounding wire, the possibility that the workers fall from the electric pole is reduced, and the safety of the workers in the overhaul process is improved.

Referring to fig. 1 and 3, the grounding cabinet 2 is rotatably connected with an installation outer door 9, a mechanical door lock for fixedly installing the outer door 9 is fixedly connected with the installation outer door 9, the cabinet body, the installation door 4 and the installation outer door 9 of the grounding cabinet 2 are made of stainless steel materials, and the comprehensive distribution box 1 is made of stainless steel materials. Therefore, the arrangement of the mounting outer door 9 further increases the safety of the mounting door 4, so that the electromagnetic lock 7 on the mounting door 4 is not easily damaged by erosion of rainwater and dust, thereby improving the service life of the electromagnetic lock 7.

Referring to fig. 1, the isolating switch 5 is fixed on the inner wall of the grounding cabinet 2 through a plurality of bolts, a plurality of wiring holes 11 matched with the three-phase line 6 in size are formed in the isolating switch 5, a plurality of fixing bolts are connected to the isolating switch 5 in a threaded mode, and the fixing bolts penetrate through the wiring holes 11 so that the three-phase line 6 is abutted between the fixing bolts and the hole walls of the wiring holes 11. Therefore, the isolating switch 5 is not easy to fall off from the inner wall of the grounding cabinet 2 under the action of external force due to the arrangement of the bolts, so that the connection stability between the isolating switch 5 and the inner wall of the grounding cabinet 2 is improved; the arrangement of the fixing bolts further enhances the connection stability between the three-phase line 6 and the isolating switch 5, so that the three-phase line 6 can stably conduct current transmission operation.

The same or similar parts between the various embodiments in this specification are referred to each other. In particular, for the device embodiments, since they are substantially similar to the device embodiments, the description is relatively simple, and reference is made to the description in the device embodiments for the matters.

The foregoing detailed description has been provided for the purposes of illustration in connection with specific embodiments and exemplary examples, but such description is not to be construed as limiting the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications and improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of the application is defined by the appended claims.

Claims

1. The grounding device of the ascending-free distribution transformer is characterized by comprising a comprehensive distribution box (1) and a grounding cabinet (2), wherein a circuit breaker (3) is arranged in the comprehensive distribution box (1), an installation door (4) is arranged on the grounding cabinet (2), a disconnecting switch (5) is arranged in the grounding cabinet (2), the circuit breaker (3) is electrically connected with the disconnecting switch (5) through three-phase lines (6), an electromagnetic lock (7) for detecting the closing state of the circuit breaker (3) is arranged on the installation door (4), and when the circuit breaker (3) is disconnected, the electromagnetic lock (7) is powered off, demagnetized and in an opening state; when the circuit breaker (3) is closed or turned on by a fault, the electromagnetic latch (7) is energized and in an off state.

2. The device according to claim 1, characterized in that the comprehensive distribution box (1) is provided with a plurality of hoops (8), the grounding cabinet (2) is provided with a plurality of hoops (8), and the hoops (8) are clamped on the electric pole.

3. The device according to claim 1, characterized in that the grounding cabinet (2) is rotatably connected with a mounting outer door (9), and the mounting outer door (9) is provided with a mechanical lock (10).

4. A device according to claim 3, characterized in that the cabinet body, the mounting door (4) and the mounting outer door (9) of the earthing cabinet (2) are made of stainless steel material.

5. The device according to claim 1, characterized in that the disconnector (5) is fixedly connected to the inner wall of the earthing cabinet (2) by means of a number of bolts.

6. The device according to claim 1, characterized in that the isolating switch (5) is provided with a plurality of wiring holes (11), the isolating switch (5) is connected with a plurality of fixing bolts in a threaded manner, and the three-phase line (6) is abutted between the fixing bolts and the wall of the wiring holes (11).