CN217007427U

CN217007427U - High-voltage primary equipment grounding-based anti-misoperation device for electric power generation

Info

Publication number: CN217007427U
Application number: CN202220555174.4U
Authority: CN
Inventors: 吴恒; 章帅; 张鹏; 潘月贵; 韩雪琳; 宿端鹏; 李鸿扬; 沈甜甜
Original assignee: State Grid Jiangsu Electric Power Co ltd Suqian Power Supply Branch
Current assignee: State Grid Jiangsu Electric Power Co ltd Suqian Power Supply Branch
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-07-19
Anticipated expiration: 2032-03-15

Abstract

The utility model discloses a transformer substation high-voltage primary equipment grounding-based anti-misoperation electricity device, which is characterized in that: including shell, lifting device, pull wire, set up the metal contact of electroscope at the top of shell, lifting device sets up in the shell side, the pull wire setting on the bottom surface of shell. Set up in the shell and test electric circuit, test electric circuit include divider resistance, pilot lamp, power, test electric switch and bee calling organ, divider resistance, pilot lamp, power and test electric switch and establish ties in proper order, bee calling organ's other one end and metal contact are connected, test electric switch's other one end and pull wire one end and be connected, the other end of pull wire sets up the earthing terminal. The utility model can conveniently test the pulling-open or grounding wire dismantling condition of the high-voltage primary equipment grounding switch at a high position, and can freely adjust the length of the expansion joint according to the height of the high-voltage primary equipment to match, so that the application range of the expansion joint is wider.

Description

High-voltage primary equipment grounding-based anti-misoperation electricity-testing device for transformer substation

Technical Field

The utility model relates to the technical field of misoperation prevention devices for transformer substations, in particular to a high-voltage primary equipment grounding misoperation prevention electric testing device based on a transformer substation.

Background

All grounding wires on the power transmission equipment need to be removed and all grounding switches are pulled open when power is transmitted after the high-voltage equipment is overhauled, if the grounding wires on the overhauling equipment are not removed or the grounding switches are not pulled open before power is transmitted, the power transmission equipment is enabled to bear huge short-circuit current, normal operation of superior power equipment can be influenced, and safety of operators on the site cannot be guaranteed. Especially for large-scale equipment power transmission and outage sites, such as main transformers, bus equipment, long-distance power transmission lines and the like, due to the fact that space span of power transmission equipment is large, workers are large, an effective tool is not available for checking a grounding disconnecting link or a grounding wire on high-voltage maintenance equipment, operators are prone to missing before power transmission, and the actual state of the equipment is misjudged.

In recent years, the phenomenon that operators carry grounding wires or grounding disconnecting links to transmit power happens occasionally, the personal safety of operators and the safety of power grid equipment are seriously threatened, and therefore an anti-misoperation device for grounding detection based on high-voltage primary equipment of a transformer substation is needed, the high-voltage power transmission equipment is directly and effectively checked, no residual grounding disconnecting links or grounding wires are left on the high-voltage power transmission equipment, and the safety and the power transmission efficiency after the high-voltage equipment is overhauled are improved.

Disclosure of Invention

The utility model mainly aims to provide a grounding error-proof electricity testing device based on transformer substation high-voltage primary equipment so as to effectively solve the problems.

The utility model is realized by adopting the following technical means: the utility model provides a prevent mistake electroscope device based on transformer substation's high-pressure primary equipment ground connection, includes shell, lifting device, pull wire, sets up the metal contact of electroscope at the top of shell, lifting device sets up in the shell side, the pull wire setting on the bottom surface of shell.

Further, set up in the shell and test electric circuit, test electric circuit include divider resistance, pilot lamp, power, test electric switch and bee calling organ, divider resistance, pilot lamp, power and test electric switch and establish ties in proper order, bee calling organ's other one end and metal contact are connected, test electric switch's other one end and pull wire one end and be connected, the other end of pull wire sets up the earthing terminal.

Furthermore, the device also comprises an electroscope self-checking switch, one end of the electroscope self-checking switch is connected to the connecting point of the metal contact and the buzzer, and the other end of the electroscope self-checking switch is connected to the connecting point of the power supply and the electroscope switch.

Further, the pull wire winding on pull wire storage device, pull wire storage device set up in the shell bottom, pull wire storage device includes connecting rod, pivot and backplate, the connecting rod sets up two and is connected with the shell, sets up the pivot between two connecting rods, the backplate sets up in the pivot both sides, the earthing terminal of pull wire stretch out through connecting rod, pivot by the shell outward.

Furthermore, the connecting rod and the rotating shaft are hollow, the connecting rod is communicated with the rotating shaft, the corresponding position on the side surface of the rotating shaft is provided with an extending hole for extending the drawing lead, the two ends of the rotating shaft are provided with bearings, the inner ring of each bearing is in contact with the rotating shaft, and the outer ring of each bearing is in contact with the guard plate.

Furthermore, an insulating sheath is arranged on the side face of the guard plate, a rotation limiting device is arranged on the bearing, the rotation limiting device is a spring, the spring is divided into an accommodating limiting spring and a releasing limiting spring, and the accommodating limiting spring and the releasing limiting spring are both arranged on the bearings at the two ends of the rotating shaft.

Furthermore, the lifting device is an electricity testing type telescopic rod which is composed of a plurality of pull-type telescopic joints, the tops of the pull-type telescopic joints are fixedly connected with the shell, and the bottoms of the pull-type telescopic joints are provided with insulating sheaths.

The utility model can conveniently check whether the grounding disconnecting link of the high-voltage primary equipment at a high position is pulled open or the grounding wire is removed before the high-voltage equipment is powered on, and can freely adjust the length of the telescopic joint according to the height of the high-voltage primary equipment for matching, so that the application range of the telescopic joint is wider.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a schematic diagram of the circuit of the present invention;

FIG. 3 is a schematic view of a pull-out lead storage device according to the present invention;

FIG. 4 is a schematic view of the present invention at the spindle.

Wherein 1, the external loop of the high-voltage equipment; 2. a buzzer; 3. a voltage dividing resistor; 4. an indicator light; 5. a rechargeable battery; 6. an electroscope grounding body; 7. an electricity testing switch; 8. an electroscope self-checking switch; 9. drawing the lead; 10. a high-pressure primary device; 11. a high voltage primary equipment grounding body; 12. a grounding knife switch or a grounding wire of the high-voltage primary equipment; 13. a high voltage primary equipment electroscope contact point; 14. a metal contact; 15. a housing; 16. an electroscope buzzer mounting hole; 17. an electroscope indicator lamp mounting hole; 18. an electroscope self-checking switch button; 19. an electroscope electroscopic switch key; 20. the Type-c charging interface; 21. a connecting device; 22. an electroscope telescopic rod; 23. an insulating sheath; 24. a pull-out lead wire storage device; 25. a rotating shaft; 26. a rocker; 27. a bearing; 28. connecting a wire clamp; 29. a connecting device; 30. a connecting rod threading port; 31. a connecting rod; 32. a limiting spring is accommodated; 33. releasing the limiting spring; 34 telescopic joint.

Detailed Description

The utility model is described in further detail below with reference to the drawings of the specification:

the utility model relates to a high-voltage primary equipment grounding-based electricity mis-testing prevention device based on a transformer substation, which comprises a shell 15, a lifting device and a drawing lead 9, wherein a metal contact 14 of an electroscope is arranged at the top of the shell 15, the lifting device is arranged on the side surface of the shell 15, and the drawing lead 9 is arranged on the bottom surface of the shell 15.

Furthermore, an electricity testing circuit is arranged in the shell 15 and comprises a voltage dividing resistor 3, an indicator lamp 4, a power supply 5, an electricity testing switch 7 and a buzzer 2, the voltage dividing resistor 3, the indicator lamp 4, the power supply 5 and the electricity testing switch 7 are sequentially connected in series, the other end of the buzzer 2 is connected with the metal contact 14, the other end of the electricity testing switch 7 is connected with one end of the drawing wire 9, and the other end of the drawing wire 9 is provided with a grounding end. The grounding body 11 of the high-voltage primary equipment is a schematic graphic image description of the grounding of the high-voltage primary equipment 10.

Furthermore, the device also comprises an electroscope self-checking switch 8, wherein one end of the electroscope self-checking switch 8 is connected to the connection point of the metal contact 14 and the buzzer 2. The other end of the electroscope self-checking switch 8 is connected with the connection point of the rechargeable battery 5 and the electroscope switch 7.

In the utility model, an electroscope buzzer mounting hole 16, an electroscope indicator lamp mounting hole 17, an electroscope self-checking switch key 18 and an electroscope switch key 19 are arranged at corresponding positions of a shell 15 to expose corresponding elements in the shell, and a Type-c charging interface 20 is also arranged on the shell 15 to charge a rechargeable battery 5.

Further, pull wire 9 twine on pull wire storage device 24, pull wire storage device 24 set up in shell 15 bottom, pull wire storage device 24 includes connecting rod 31, pivot 25 and backplate, connecting rod 31 sets up two and is connected with shell 15, sets up pivot 25 between two connecting rods 31, the backplate sets up the both sides at pivot 25, pull wire 9's earthing terminal outwards stretch out through connecting rod 31, pivot 25 by shell 15.

Furthermore, the connecting rod 31 and the rotating shaft 25 are hollow, the connecting rod 31 is communicated with the rotating shaft 25, a stretching hole for stretching the drawing wire 9 is formed in the corresponding position of the side face of the rotating shaft 25, a connecting wire threading port 30 for stretching the drawing wire is formed in the top of the connecting rod 31, bearings 27 are arranged at two ends of the rotating shaft, inner rings of the bearings are in contact with the rotating shaft, and outer rings of the bearings are in contact with the guard plate.

Further, set up insulating sheath in the side of backplate, set up rotation stop device on the bearing, rotation stop device be the spring, the spring divide into and accomodate spacing spring 32 and release spacing spring 33, accomodate spacing spring 32 and release spacing spring 33 and all set up on the bearing 27 at pivot both ends.

Further, the lifting device be the electricity testing formula telescopic link 22, the electricity testing formula telescopic link comprises a plurality of pull telescopic joints 34, and connecting device 21 fixed connection is passed through with the shell at pull telescopic joint 34 top, sets up insulating sheath 23 in the bottom of pull telescopic joint.

In this embodiment, according to the working requirements of the national grid company electric power safety work rules, the grounding of the power transformation part is firstly connected with the grounding end, and then connected with the conductor end, the internal wire and the connecting clamp 28 of the pull wire storage device and the nearest electroscope grounding body 6 of the high-voltage primary equipment 10 to be tested are firstly fixed. Manually rotating rocker 26 again releases electroscope pull wire 9 by rotating it in a counterclockwise direction.

When specifically setting up, in order to guarantee the correctness that the high-voltage primary equipment grounding anti-misoperation device verifies that the high-voltage primary equipment 10 really has the high-voltage primary equipment grounding disconnecting link or grounding line 12 and is pulled open or not detached based on the substation high-voltage primary equipment grounding anti-misoperation device, firstly, on the premise that the loop of the high-voltage primary equipment grounding anti-misoperation device does not have a fault, the electroscope switch 7 is closed, an operator holds the insulating sheath 23 to lift the electroscope telescopic rod 22 upwards to contact the high-voltage primary equipment electroscope contact point 13 with the determined grounding device, and if the buzzer 2 rings down, the indicator lamp 4 flickers to show that the high-voltage primary equipment grounding anti-misoperation device can have the precondition that whether the high-voltage primary equipment grounding disconnecting link or grounding line 12 is pulled open or not detached or not.

It should be noted that the number of the telescopic parts 34 of the telescopic rod 22 is selected according to the height of the contact point 13 of the high voltage primary equipment electroscope so as to ensure that the operator holds the insulating sheath 23 of the telescopic rod of the electroscope to lift the telescopic rod 22 upwards until the metal contact 14 of the electroscope can be reliably contacted with the contact point 13 of the high voltage primary equipment electroscope.

This operating principle based on transformer substation's high-pressure primary equipment ground connection prevents mistake and tests electric installation:

when in use, the first step is as follows: and closing the self-checking switch 8 of the self-checking electrical appliance to switch on the buzzer 2, the divider resistor 3, the indicator lamp 4 and the rechargeable battery 5 to perform self-checking on the grounding anti-misoperation electrical device of the high-voltage primary equipment of the transformer substation. The second step is that: and fixing the connecting clamp 28 of the internal lead and the grounding body of the pull-out lead containing device and the grounding body 6 of the electroscope closest to the high-voltage primary equipment 10 to be tested. The third step: and (3) closing the electroscope switch 7, holding the electroscope drawing rod insulating sheath 23 by an operator, lifting the electroscope telescopic rod 22 upwards, and contacting the high-voltage primary equipment electroscope contact point 13 with the determined grounding device. The fourth step: the electroscope extension pole 22 is lifted until the electroscope metal contact 14 makes reliable contact with the high voltage primary equipment electroscope contact point 13. The fifth step: whether the grounding knife switch or the grounding wire 12 of the high-voltage primary equipment is pulled open or not is determined through the ringing of the buzzer 2 and the flickering of the indicator light 4.

Claims

1. The utility model provides an prevent mistake and test electric installation based on transformer substation's high-pressure primary equipment ground connection which characterized in that: the electroscope comprises a shell, a lifting device and a drawing lead, wherein a metal contact of the electroscope is arranged at the top of the shell, the lifting device is arranged on the side surface of the shell, and the drawing lead is arranged on the bottom surface of the shell.

2. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 1, wherein: set up in the shell and test electric circuit, test electric circuit include divider resistance, pilot lamp, power, test electric switch and bee calling organ, divider resistance, pilot lamp, power and test electric switch and establish ties in proper order, bee calling organ's other one end and metal contact are connected, test electric switch's other one end and pull wire one end and be connected, the other end of pull wire sets up the earthing terminal.

3. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 2, wherein: the electroscope is characterized by further comprising an electroscope self-checking switch, wherein one end of the electroscope self-checking switch is connected to a connection point of the metal contact and the buzzer, and the other end of the electroscope self-checking switch is connected to a connection point of the power supply and the electroscope switch.

4. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 1, wherein: the pull wire winding on pull wire storage device, pull wire storage device set up in the shell bottom, pull wire storage device includes connecting rod, pivot and backplate, the connecting rod sets up two and is connected with the shell, sets up the pivot between two connecting rods, the backplate sets up in the pivot both sides, the earthing terminal of pull wire stretch out through connecting rod, pivot by the shell outwards.

5. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 4, wherein: the connecting rod and the rotating shaft are hollow, the connecting rod is communicated with the rotating shaft, a stretching hole for stretching the drawing lead is formed in the corresponding position of the side face of the rotating shaft, bearings are arranged at two ends of the rotating shaft, the inner ring of each bearing is in contact with the rotating shaft, and the outer ring of each bearing is in contact with the guard plate.

6. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 5, wherein: an insulating sheath is arranged on the side surface of the guard plate, and a rotation limiting device is arranged on the bearing.

7. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device according to claim 6, characterized in that: the rotation limiting device is a spring, the spring is divided into an accommodating limiting spring and a releasing limiting spring, and the accommodating limiting spring and the releasing limiting spring are both arranged on bearings at two ends of the rotating shaft.

8. The substation high-voltage primary equipment grounding-based anti-misoperation electrical device of claim 1, wherein: the electric-testing telescopic rod is composed of a plurality of pull-type telescopic joints, the tops of the pull-type telescopic joints are fixedly connected with the shell, and insulating sheaths are arranged at the bottoms of the pull-type telescopic joints.