Portable discharging device for capacitor bank

Abstract

The utility model discloses a portable discharge device for a capacitor bank. The portable discharge device comprises a conductive tube, the end part of the vertical section of the conductive tube is screwed at the top end of the telescopic insulating rod, a through hole is formed in the side wall of the telescopic insulating rod, the wire is arranged in the telescopic insulating rod, and one end of the wire is connected with the bottom end, arranged in the telescopic insulating rod, of the conductive tube; one end of a grounding wire on the automatic recovery winder penetrates through the through hole and is connected with the other end of the wire. According to the distance between the positive electrode and the negative electrode of the capacitor, a worker unfolds the first folding rod, the second folding rod and the discharge folding rod, so that the distance between the two discharge heads reaches the distance between the positive electrode and the negative electrode of the capacitor; residual charges in the capacitor sequentially pass through the discharging folding rod, the first folding rod, the second folding rod, the conductive tube, the wire and the grounding wire and then are grounded, simultaneous discharging of the residual charges of the positive electrode and the negative electrode of the capacitor is achieved, discharging efficiency is improved, and the problems of safety operation hidden dangers and electric shock hidden dangers caused by incomplete discharging are solved.

Description

Technical field:

[0001] The utility model relates to the technical field of electric power equipment, in particular to a portable discharge device for a capacitor bank. Background technology:

[0002] At the moment the power capacitor stops running, the voltage is still very high, so there is still a lot of charge in the capacitor itself, and the terminal voltage is still very high. If the residual charge in the capacitor has no discharge channel, it will exist for a long time, which will cause the grid voltage and the residual charge to be superimposed together when it is used next time, forming a more serious voltage shock, which will then endanger the normal operation of related electrical equipment. In severe cases, it may directly cause damage to the capacitor or other equipment; in addition, if the maintenance personnel touch the charged power capacitor during daily inspections, it will cause electric shock accidents, which may endanger life in severe cases.

[0003] When inspecting and repairing high-voltage equipment such as power capacitors, in order to avoid harm to the human body caused by residual charge after power outage, workers need to discharge the capacitor through a high-voltage discharge device before operation. Currently, the known high-voltage discharge device includes a hook-shaped contact electrode, an insulating rod, a wire and a grounding body. The discharge process is to use the hook-shaped contact electrode to contact one of the poles of the capacitor and ground it through the grounding body, and the residual charge of the capacitor is discharged to the ground through the wire. However, in actual operation, when using the existing discharge device, the hook-shaped contact electrode needs to be hung on the positive and negative poles of the capacitor in turn, and discharge is carried out in turn, so as to finally ensure that the residual charge of the capacitor is completely released. The operation is cumbersome and the discharge efficiency is low. Utility model content:

[0004] The utility model aims to provide a portable capacitor bank discharge device which is simple to operate and is conducive to improving discharge efficiency.

[0005] The utility model is implemented by the following technical scheme: a portable discharge device for a capacitor bank, comprising a telescopic insulating rod, a first folding rod, a second folding rod, a conducting wire, an automatic retracting wire reel and a "T"-shaped conductive tube; one end of the first folding rod is slidably inserted into one end of the horizontal section of the conductive tube, and one end of the second folding rod is slidably inserted into the other end of the horizontal section of the conductive tube; the other end of the first folding rod and the other end of the second folding rod are both connected to a first discharge resistor, and the other ends of the two first discharge resistors are respectively connected to a discharge folding rod; the end of the vertical section of the conductive tube is screwed to the top of the telescopic insulating rod, a through hole is provided on the side wall of the telescopic insulating rod, the conducting wire is placed in the telescopic insulating rod, and one end of the conducting wire is connected to the bottom end of the conductive tube placed in the telescopic insulating rod; one end of the grounding wire on the automatic retracting wire reel passes through the through hole and is connected to the other end of the conducting wire, and a wire clamp is fixed to the other end of the grounding wire on the automatic retracting wire reel.

[0006] Furthermore, it also includes an acousto-optic electroscope fixed to the outer wall of the telescopic insulating rod, and the electroscope head of the acousto-optic electroscope passes through the telescopic insulating rod and is connected to the wire.

[0007] Furthermore, the conductive tube, the first folding rod, the second folding rod and the discharge folding rod are all conductors made of copper.

[0008] Furthermore, the first folding rod, the second folding rod and the discharge folding rod are all two connecting rods hinged by a pin shaft, one of the connecting rods is provided with a groove at the end, and the other connecting rod is fixed with a connecting block slidably inserted in the groove at the end, and the connecting block is connected to the side wall of the groove by passing the pin shaft.

[0009] Furthermore, a second discharge resistor is connected in series to the wire.

[0010] Furthermore, a discharge head with a spherical structure is fixed to the end of the discharge folding rod.

[0011] Furthermore, a rainproof insulating umbrella skirt is fixed to the outer wall of the telescopic insulating rod.

[0012] Furthermore, an insulating pipe joint is threadedly connected at the through hole.

[0013] The advantages of the utility model are as follows: when the utility model is used to discharge the capacitor, the wire clamp is used for grounding. According to the distance between the positive and negative electrodes of the capacitor, the staff unfolds the first folding rod, the second folding rod and the discharge folding rod, and adjusts the extension amount of the first folding rod and the second folding rod along the horizontal section of the conductive tube, so that the distance between the discharge heads at the ends of the two discharge folding rods reaches the distance between the positive and negative electrodes of the capacitor; then the staff holds the telescopic insulating rod to make the two discharge heads contact with the positive and negative electrodes of the capacitor respectively, and the residual charge in the capacitor is grounded after passing through the discharge folding rod, the first folding rod and the second folding rod, the conductive tube, the wire, and the grounding wire in sequence, so that the residual charge of the positive and negative electrodes of the capacitor is discharged at the same time, and the discharge efficiency is improved. Therefore, when the capacitor group is discharged for maintenance and repair, the utility model effectively and conveniently solves the hidden dangers of safe operation and the hidden danger of electric shock caused by incomplete discharge, and has certain social and economic benefits. Description of the drawings:

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 A partial enlarged view of .

[0016] The components in the accompanying drawings are marked as follows: telescopic insulating rod 1, through hole 1.1, first folding rod 2, second folding rod 3, wire 4, automatic recovery reel 5, conductive tube 6, first discharge resistor 7, discharge folding rod 8, wire clamp 9, sound and light electroscope 10, connecting rod 11, groove 11.1, connecting block 12, pin 13, second discharge resistor 14, discharge head 15, rainproof insulating umbrella skirt 16, insulating pipe joint 17. Specific implementation method:

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1 and Figure 2 As shown, the present embodiment provides a portable discharge device for a capacitor bank, which includes a telescopic insulating rod 1, a first folding rod 2, a second folding rod 3, a conductor 4, an automatic retracting reel 5 and a "T"-shaped conductive tube 6; one end of the first folding rod 2 is slidably inserted into one end of the horizontal section of the conductive tube 6, and one end of the second folding rod 3 is slidably inserted into the other end of the horizontal section of the conductive tube 6; the other end of the first folding rod 2 and the other end of the second folding rod 3 are both connected to a first discharge resistor 7, which plays an effective current limiting role to avoid damage to the capacitor due to excessive discharge current when the positive and negative poles of the capacitor are discharged at the same time; the other ends of the two first discharge resistors 7 are respectively connected to a discharge folding rod 8, and a discharge head 15 with a spherical structure is fixed at the end of the discharge folding rod 8; in the present embodiment, the conductive tube 6, the first folding rod 2, the second folding rod 3 and the discharge folding rod 8 are all copper conductors with good conductivity.

[0020] The first folding rod 2, the second folding rod 3 and the discharge folding rod 8 are two connecting rods 11 hinged by a pin 13, wherein a groove 11.1 is provided at the end of one of the connecting rods 11, and a connecting block 12 which is slidably inserted in the groove 11.1 is fixed at the end of the other connecting rod 11, and the connecting block 12 is connected to the side wall of the groove 11.1 by penetrating the pin 13; the connecting block 12 is tightly matched with the groove 11.1, and one of the connecting rods 11 can swing around the pin 13 on the other connecting rod 11 under the assistance of manual labor, so that when not in use, the first folding rod 2, the second folding rod 3 and the discharge folding rod 8 can be folded for easy carrying and storage; when the utility model is used to discharge a capacitor, according to capacitors of different models and sizes, the first folding rod 2, the second folding rod 3 and the discharge folding rod 8 are unfolded until the distance between the discharge heads 15 of the two discharge folding rods 8 is equal to the distance between the positive and negative electrodes of the capacitor, and can also be unfolded to different angles, so that the operator can discharge the two electrodes of the capacitor standing on the ground at the corresponding angle.

[0021] The end of the vertical section of the conductive tube 6 is screwed to the top of the telescopic insulating rod 1, and a through hole 1.1 is opened on the side wall of the telescopic insulating rod 1. The wire 4 is placed in the telescopic insulating rod 1, and one end of the wire 4 is connected to the bottom end of the conductive tube 6 placed in the telescopic insulating rod 1; one end of the grounding wire on the automatic recovery reel 5 passes through the through hole 1.1 and is connected to the other end of the wire 4, and the other end of the grounding wire on the automatic recovery reel 5 is fixed with a wire clamp 9. The automatic recovery reel 5 can be used to realize the access and automatic storage of the grounding wire.

[0022] When the utility model is used to discharge the capacitor, the wire clamp 9 is used for grounding. According to the distance between the positive and negative electrodes of the capacitor, the staff unfolds the first folding rod 2, the second folding rod 3 and the discharge folding rod 8, and adjusts the extension amount of the first folding rod 2 and the second folding rod 3 along the horizontal section of the conductive tube 6, so that the distance between the discharge heads 15 at the ends of the two discharge folding rods 8 reaches the distance between the positive and negative electrodes of the capacitor; then the staff holds the telescopic insulating rod 1, so that the two discharge heads 15 are in contact with the positive and negative electrodes of the capacitor respectively, and the residual charge in the capacitor is grounded after passing through the discharge folding rod 8, the first folding rod 2 and the second folding rod 3, the conductive tube 6, the wire 4, and the grounding wire in sequence, so that the residual charge of the positive and negative electrodes of the capacitor is discharged at the same time, and the discharge efficiency is improved. Therefore, when the capacitor bank is discharged for maintenance and repair, the utility model effectively and conveniently solves the hidden dangers of safe operation and the hidden danger of electric shock caused by incomplete discharge, and has certain social and economic benefits.

[0023] It also includes an acousto-optic electroscope 10 fixed to the outer wall of the telescopic insulating rod 1, and the electroscope head of the acousto-optic electroscope 10 passes through the telescopic insulating rod 1 and is connected to the wire 4; the discharge situation is detected in real time by the acousto-optic electroscope 10. When the acousto-optic electroscope 10 no longer alarms, it indicates that the residual charge of the capacitor has been released, further ensuring that the residual charge can be completely released.

[0024] A second discharge resistor 14 is connected in series to the conductor 4, which limits the current flowing into the conductor 4, allowing part of the electrical energy to be released in the form of heat energy. At the same time, it further protects the capacitor; a rainproof insulating umbrella skirt 16 is fixed to the outer wall of the telescopic insulating rod 1 to increase the insulation strength on rainy days; the through hole 1.1 is provided with an internal thread and is screwed with an insulating pipe joint 17. One end of the grounding wire on the automatic recovery reel 5 is inserted through the insulating pipe joint 17 and connected to the conductor 4, thereby playing an effective insulating role.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable discharge device for a capacitor bank, comprising a telescopic insulating rod, characterized in that: It also includes a first folding rod, a second folding rod, a conductor, an automatic retrieving reel and a "T"-shaped conductive tube; One end of the first folding rod is slidably inserted into one end of the horizontal section of the conductive tube, and one end of the second folding rod is slidably inserted into the other end of the horizontal section of the conductive tube; The other end of the first folding rod and the other end of the second folding rod are both connected to a first discharge resistor, and the other ends of the two first discharge resistors are respectively connected to a discharge folding rod; The end of the vertical section of the conductive tube is screwed to the top of the telescopic insulating rod, a through hole is provided on the side wall of the telescopic insulating rod, the conductive wire is placed in the telescopic insulating rod, and one end of the conductive wire is connected to the bottom end of the conductive tube placed in the telescopic insulating rod; One end of the grounding wire on the automatic wire reel passes through the through hole and is connected to the other end of the wire, and the other end of the grounding wire on the automatic wire reel is fixed with a wire clip.

2. The portable discharge device for capacitor bank according to claim 1, characterized in that: It also includes an acousto-optic electroscope fixed to the outer wall of the telescopic insulating rod, and the electroscope head of the acousto-optic electroscope passes through the telescopic insulating rod and is connected with the wire.

3. The portable discharge device for capacitor bank according to claim 1, characterized in that: The conductive tube, the first folding rod, the second folding rod and the discharge folding rod are all conductors made of copper.

4. The portable discharge device for capacitor bank according to claim 1, characterized in that: The first folding rod, the second folding rod and the discharge folding rod are two connecting rods hinged by a pin shaft, one of the connecting rods is provided with a groove at the end, and the other connecting rod is fixed with a connecting block slidably inserted in the groove at the end, and the connecting block is connected to the side wall of the groove by passing the pin shaft.

5. The portable discharge device for capacitor bank according to any one of claims 1 to 4, characterized in that: The wire is connected in series with a second discharge resistor.

6. The portable discharge device for capacitor bank according to claim 5, characterized in that: A discharge head with a spherical structure is fixed at the end of the discharge folding rod.

7. The portable discharge device for capacitor bank according to claim 5, characterized in that: A rainproof insulating umbrella skirt is fixed on the outer wall of the telescopic insulating rod.

8. The portable discharge device for capacitor bank according to claim 5, characterized in that: An insulating pipe joint is threadedly connected at the through hole.

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