A power distribution transformer core grounding current remote state monitoring device

Abstract

The application discloses a kind of distribution transformer core grounding current remote state monitoring devices, it is related to transformer monitoring technical field.The distribution transformer core grounding current remote state monitoring device includes device main body, the inside of device main body is hollow and signal emitting device is embedded in bottom portion, the top of signal emitting device is provided with two electrical terminals, two electrical terminals are respectively fixed with the one end of two wires, the other end of two wires is respectively fixed and is arranged in the side of device main body.The distribution transformer core grounding current remote state monitoring device, by setting ground tab one, ground tab two and device main body, the grounding operation of transformer can be realized, setting signal emitting device can monitor the current flowing through ground tab one, ground tab two and device main body, when current is larger, signal will be sent, to remind staff to carry out rapid repair.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer monitoring, in particular to a power distribution transformer core grounding current remote state monitoring device. BACKGROUND

[0002] The transformer is one of the necessary components in the power supply circuit, which can convert high voltage into low voltage to realize the power supply operation of the residential area. In the installation process of the existing transformer, in order to prevent the intermittent discharge phenomenon caused by the potential difference between the core and the oil tank, the grounding wire is needed to ground the core in the transformer. The existing grounding operation is generally to connect one end of the grounding wire with any silicon steel sheet on the core, and then bury the other end of the grounding wire in the ground to realize the grounding function.

[0003] When the core is grounded, the current introduced into the ground by the grounding wire is weak and constant. However, after the transformer is used for a period of time, the internal components are subject to wear and tear, which causes the grounding wire to transmit a larger current. At this time, if the transformer is not repaired in time, the transformer will be damaged. Since the transformer is generally repaired periodically, the maintenance personnel cannot know the information when the grounding wire transmits a larger current, and the fault of the transformer cannot be quickly repaired, which leads to a large degree of damage to the transformer. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the present application provides a power distribution transformer core grounding current remote state monitoring device, which solves the problems raised in the background art.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the present application is realized by the following technical scheme: a power distribution transformer core grounding current remote state monitoring device, comprising a device main body, the inside of the device main body is hollow and the bottom is embedded with a signal emitting device, the top of the signal emitting device is provided with two electrical connection ends, one end of two wires is fixed respectively, the other end of the two wires is fixed respectively and penetrates through the side of the device main body, the left and right sides of the device main body are respectively provided with a grounding sheet one and a grounding sheet two, the grounding sheet one and the grounding sheet two are respectively electrically connected with the two wires, the setting of the wires can be used for the connection between the signal emitting device and the grounding sheet one and the grounding sheet two, when the transformer fails, the grounding sheet one and the grounding sheet two will have current, so that the signal emitting device in the device main body is powered on, so that the signal emitting device emits signals to the receiving end to remind the staff that the transformer is in a leakage state.

[0008] Preferably, the signal emitting device comprises an energizer and a signal emitter, in order to protect the energizer and avoid the device body affecting the signal emitting effect of the signal emitter, the energizer is located inside the device body, the signal emitter is located at the bottom of the energizer and the signal emitter is located outside the device body, and the top of the signal emitting device is electrically connected with a warning sounder.

[0009] Preferably, in order to improve the connection distance between the grounding piece one and the transformer when the device body is used, thereby improving the application range of the device, an extension device is arranged between the left side of the device body and the grounding piece one, the extension device comprises an extension cylinder, a fixed conductive block and a movable conductive block, the extension cylinder is fixed on the left side of the device body, the fixed conductive block is fixedly installed on the inner wall right side of the extension cylinder, and a wire is fixed on the right side of the fixed conductive block to realize the connection between the fixed conductive block and the signal emitting device, and the movable conductive block is movably sleeved on the inside of the extension cylinder and in contact with the inside of the extension cylinder, in order to facilitate the disassembly and connection effect of the movable conductive block and the grounding piece one, the right end of the grounding piece one is detachably installed on the left side of the movable conductive block.

[0010] Preferably, in order to protect the extension cylinder from being damaged by external force, the outside of the extension cylinder is fixedly installed in the inside of a protection sleeve, and the protection sleeve is fixed on the left side of the device body, in order to realize the detachable connection between the movable conductive block and the grounding piece one, the left side of the movable conductive block is fixed with a mounting piece, a positioning nut is threadedly connected on the mounting piece, the positioning nut is in abutment with the grounding piece one, and the mutual extrusion force and friction force between the positioning nut and the grounding piece one make the positioning nut and the grounding piece one present a stable connection state, and they are also relatively convenient to disassemble.

[0011] Preferably, in order to improve the stability of the movable conductive block during movement and fix the movable conductive block to prevent gaps from being generated between the movable conductive block and the inner wall of the extension cylinder during movement, and the fixation of the movable conductive block can improve the stability after adjustment, thereby avoiding movement of the movable conductive block, a stabilizing device is fixed in the inside of the extension cylinder, a limiting opening is formed in the movable conductive block, the stabilizing device is in contact with the inner wall of the limiting opening, and the top and bottom of the stabilizing device are in open state, the inner walls of the top and bottom of the stabilizing device are in close contact with a piston, a plurality of positioning plates are fixed on one side of the piston, the positioning plates are located outside the stabilizing device, and a control tab is slidably connected with the left end inner wall of the stabilizing device, and the control tab can be used to control the position of the piston.

[0012] Preferably, in order to realize the fixing effect of the two positioning plates on the movable conductive block, the stable limiting of the movable conductive block on both sides is realized, the distance between every two adjacent positioning plates is equal to the distance between the left and right sides of the movable conductive block, in order to realize the automatic reset effect of the control knob, a spring is arranged between the control knob and the inner wall of the stabilizing device.

[0013] Preferably, in order to avoid the influence of the device body on the sounding effect of the warning sounder, the front side and the rear side of the device body are provided with ventilation holes, in order to realize the closing effect of the ventilation holes when the temperature inside the device body rises, the front and rear sides of the inner wall of the device body are provided with self-adapting devices, the self-adapting device comprises two rotating shutters and a thin-walled rubber capsule, the rotating shutter is rotatably installed in the device body, the thin-walled rubber capsule is fixed on the two rotating shutters through the hard connecting blocks on both sides, and the inside of the thin-walled rubber capsule is provided with a gas which is easy to expand when heated, and when the temperature is higher than the normal temperature, the gas expands, thereby increasing the volume and making the thin-walled rubber capsule expand.

[0014] Preferably, in order to improve the temperature inside the device body when the warning sounder is powered on, the reaction speed of the self-adapting device is improved, and a resistor is arranged on the wire for connecting the warning sounder and the signal emitting device.

[0015] (Three) beneficial effects

[0016] The application provides a power distribution transformer core grounding current remote state monitoring device.

[0017] (1) The power distribution transformer core grounding current remote state monitoring device can realize the grounding operation of the transformer through the setting of the grounding sheet one, the grounding sheet two and the device body, the setting of the signal emitting device can monitor the current flowing through the grounding sheet one, the grounding sheet two and the device body, when the current is large, a signal will be sent, thereby reminding the staff to carry out rapid maintenance, the warning sounder will send a warning sound, thereby reminding the surrounding personnel to keep away from the transformer, and when a plurality of transformers are installed together, the warning sound of the warning sounder can also help the maintenance personnel to find the position of the transformer with faults.

[0018] (2) The power distribution transformer core grounding current remote state monitoring device can realize the adjustment of the length between the grounding sheet one and the device body through the setting of the extension cylinder, the fixed conductive block and the movable conductive block, thereby making the device applicable to more transformers in the environment, and preventing the length of the grounding sheet one from being insufficient to affect the use of the device.

[0019] (3), the power distribution transformer core grounding current remote state monitoring device, through the setting piston, positioning plate and control dial can realize the limiting effect to the movable conductive block, prevent movable conductive block moves in the process of rotation, also can play the fixed effect to movable conductive block, to improve the stability of movable conductive block after adjustment.

[0020] (4), the power distribution transformer core grounding current remote state monitoring device, through the setting rotating shield and thin-walled rubber capsule can utilize the elevated temperature to make the air hole open, improve the heat dissipation of device main body and the sound production effect of warning sounder. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the whole structure schematic diagram of the present application;

[0022] Figure 2 It is the device main body half sectional view in the present application;

[0023] Figure 3 It is the device main body multi-angle partial sectional view in the present application;

[0024] Figure 4 It is the protective sleeve partial sectional view in the present application;

[0025] Figure 5 It is the stabilizing device partial sectional view in the present application;

[0026] Figure 6 It is the A part enlarged structure schematic diagram in the present application Figure 3

[0027] In the drawing: 1, device main body;2, signal emitting device;21, wire;22, resistance;3, grounding piece one;4, grounding piece two;5, warning sounder;6, extension device;61, extension cylinder;62, fixed conductive block;63, movable conductive block;7, protective sleeve;8, stabilizing device;81, piston;82, positioning plate;83, control dial;9, self-adapting device;91, rotating shield;92, thin-walled rubber capsule. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] Please refer to Figures 1-6 ​The application provides a technical scheme: a power distribution transformer core grounding current remote state monitoring device, which comprises a device main body 1, the inside of the device main body 1 is provided in a hollow shape and a signal emitting device 2 is embedded at the bottom, two electrical connection ends are arranged at the top of the signal emitting device 2, one end of two wires 21 is fixedly connected with the two electrical connection ends respectively, the other end of the two wires 21 is fixedly connected with the device main body 1 arranged on the side, a grounding sheet one 3 and a grounding sheet two 4 are arranged on the left side and the right side of the device main body 1 respectively, the grounding sheet one 3 and the grounding sheet two 4 are electrically connected with the two wires 21 respectively, the two wires 21 can be used for connecting the signal emitting device 2 and the grounding sheet one 3 and the grounding sheet two 4, when the transformer fails, the grounding sheet one 3 and the grounding sheet two 4 have current, so that the signal emitting device 2 in the device main body 1 is electrified, so that the signal emitting device 2 emits signals to the receiving end, to remind the staff that the transformer is in a leakage state.

[0030] Preferably, in the embodiment, the signal emitting device 2 comprises an energizer and a signal emitter, in order to protect the energizer and avoid the influence of the device main body 1 on the signal emitting effect of the signal emitter, the energizer is arranged in the device main body 1, the signal emitter is arranged at the bottom of the energizer and the signal emitter is arranged outside the device main body 1, and the top of the signal emitting device 2 is electrically connected with a warning sounder 5.

[0031] Preferably, in the embodiment, in order to improve the connection distance between the grounding sheet one 3 and the transformer when the device main body 1 is used, thereby improving the application range of the device, an extension device 6 is arranged between the left side of the device main body 1 and the grounding sheet one 3, the extension device 6 comprises an extension cylinder 61, a fixed conductive block 62 and a movable conductive block 63, the extension cylinder 61 is fixedly arranged on the left side of the device main body 1, the fixed conductive block 62 is fixedly arranged on the inner wall right side of the extension cylinder 61, and one end of a wire 21 is fixedly arranged on the right side of the fixed conductive block 62, so as to realize the connection between the fixed conductive block 62 and the signal emitting device 2, the movable conductive block 63 is movably sleeved in the extension cylinder 61 and is in contact with the inner side of the extension cylinder 61, in order to realize the dismounting and connecting effect of the movable conductive block 63 and the grounding sheet one 3, the right end of the grounding sheet one 3 is detachably arranged on the left side of the movable conductive block 63.

[0032] Preferably, in the embodiment, in order to protect the extension cylinder 61 and prevent the extension cylinder 61 from being damaged by external force, the outer side of the extension cylinder 61 is fixedly arranged in a protection sleeve 7, the protection sleeve 7 is fixedly arranged on the left side of the device main body 1, in order to realize the detachable connection between the movable conductive block 63 and the grounding sheet one 3, the left side of the movable conductive block 63 is fixedly arranged with a mounting sheet, a positioning nut is threadedly connected with the mounting sheet, the positioning nut is in contact with the grounding sheet one 3, the mutual extrusion force and friction force between the positioning nut and the grounding sheet one 3 make the positioning nut and the grounding sheet one 3 in a stable connection state, and the mutual dismounting is relatively convenient.

[0033] Preferably, in order to improve the stability of the movable conducting block 63 during movement and to fix the movable conducting block 63 to prevent a gap between the movable conducting block 63 and the inner wall of the extension cylinder 61 during movement of the movable conducting block 63, and to improve the stability of the movable conducting block 63 after adjustment, thereby avoiding movement of the movable conducting block 63, a stabilizing device 8 is fixed inside the extension cylinder 61, a limiting hole is formed in the movable conducting block 63, the stabilizing device 8 contacts the inner wall of the limiting hole, the top and bottom of the stabilizing device 8 are open, the inner walls of the top and bottom of the stabilizing device 8 are in close contact with the piston 81, a plurality of positioning plates 82 are fixed on one side of the piston 81, the positioning plates 82 are located outside the stabilizing device 8, and a control tab 83 is slidably connected to the left end inner wall of the stabilizing device 8. The control tab 83 can be used to control the position of the piston 81.

[0034] Preferably, in order to achieve the fixing effect of the two positioning plates 82 on the movable conducting block 63, the stabilizing limiting effect on both sides of the movable conducting block 63 is achieved, the distance between every two adjacent positioning plates 82 is equal to the distance between the left and right sides of the movable conducting block 63, and in order to achieve the automatic reset effect of the control tab 83, a spring is arranged between the control tab 83 and the inner wall of the stabilizing device 8.

[0035] Preferably, in order to avoid the influence of the device main body 1 on the sound effect of the warning sounder 5, air holes are formed on the front and rear sides of the device main body 1, in order to achieve the closing effect of the air holes when the temperature inside the device main body 1 rises, self-adapting devices 9 are arranged on the front and rear inner walls of the device main body 1, the self-adapting devices 9 include two rotating shutters 91 and a thin-walled rubber capsule 92, the rotating shutters 91 are rotatably installed inside the device main body 1, the thin-walled rubber capsule 92 is fixed on the two rotating shutters 91 through hard connecting blocks on both sides, and a gas that expands easily under heat is arranged inside the thin-walled rubber capsule 92. When the temperature is higher than normal temperature, the gas expands, thereby increasing the volume and causing the thin-walled rubber capsule 92 to expand.

[0036] Preferably, in order to improve the temperature inside the device main body 1 when the warning sounder 5 is powered on, thereby improving the response speed of the self-adapting device 9, an electric resistance 22 is arranged on the wire used to connect the warning sounder 5 and the signal emitting device 2.

[0037] The working principle of the embodiment in the specific implementation process is that the grounding sheet one 3 is connected with a silicon steel sheet on the iron core, the grounding sheet two 4 is connected to the ground, and a small current will flow through the grounding sheet one 3, the grounding sheet two 4 and the device main body 1. At the same time, the current flowing through the grounding sheet one 3, the grounding sheet two 4 and the device main body 1 will flow to the signal emitting device 2 through the wire 21. The signal emitting device 2 is in an energized state and emits a corresponding current intensity signal. When the transformer fails and the current on the grounding sheet one 3, the grounding sheet two 4 and the device main body 1 increases, the signal emitting device 2 will send a signal with a larger current to remind the staff to repair the transformer in time to prevent greater damage to the transformer. At the same time, when the signal emitting device 2 flows through a larger current, the signal emitting device 2 will control the warning sounder 5 to emit a warning sound.

[0038] After the grounding sheet one 3 is connected with the transformer, the grounding sheet one 3 and the device main body 1 can be pulled. At this time, the grounding sheet one 3 drives the movable conductive block 63 to move inside the extension cylinder 61. When the movable conductive block 63 is adjusted to the desired position, the grounding sheet two 4 can be installed. The current on the grounding sheet one 3 will be conducted to the extension cylinder 61 and the fixed conductive block 62 through the movable conductive block 63, and then conducted to the wire 21 through the fixed conductive block 62, without causing power failure when the extension grounding sheet one 3 and the device main body 1 are pulled. When adjusting the movable conductive block 63, first manually pull the control tab 83 to move. The air pressure inside the stabilizing device 8 decreases during the movement of the control tab 83. Under the negative pressure state inside the stabilizing device 8, the two pistons 81 move towards each other and drive the positioning plate 82 to retract into the stabilizing device 8, preventing the positioning plate 82 from affecting the movement of the movable conductive block 63. After the movable conductive block 63 is adjusted, the control tab 83 is released. The control tab 83 is reset under the action of the spring and enters the stabilizing device 8. The air pressure inside the stabilizing device 8 increases and drives the two pistons 81 to move away from each other. At this time, the piston 81 drives the positioning plate 82 to remove the stabilizing device 8, and the two positioning plates 82 will be located on both sides of the movable conductive block 63 to fix the movable conductive block 63, preventing the movable conductive block 63 from moving inside the extension cylinder 61. Even if the movable conductive block 63 blocks the positioning plate 82 from moving to the side of the movable conductive block 63, the positioning plate 82 and the piston 81 can also move quickly under the action of the spring force and air pressure when the movable conductive block 63 moves under the action of external force, realizing the limiting of the positioning plate 82 to the movable conductive block 63.

[0039] When a stronger current flows through the device body 1, the signal transmitting device 2 and the warning sounder 5 generate more heat, which results in the temperature inside the device body 1 rising, and the resistance 22 also generates heat. The gas inside the thin-walled rubber capsule 92 expands under the effect of the rising temperature, and the thin-walled rubber capsule 92 expands and pushes the two rotating shutters 91 to rotate. The rotating shutters 91 are separated from the air hole, which not only improves the heat dissipation effect of the device body 1 when the temperature inside the device body 1 is high, but also improves the sound effect of the warning sounder 5. When the temperature is normal, the gas inside the thin-walled rubber capsule 92 contracts and drives the thin-walled rubber capsule 92 to contract and reset. The two rotating shutters 91 re-block the air hole, preventing dust from the outside from entering the device body 1.

[0040] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A remote state monitoring device for the core grounding current of a distribution transformer, comprising a device body (1), characterized in that: The interior of the device body (1) is hollow and a signal transmitter (2) is embedded in the bottom. Two electrical connection ends are provided on the top of the signal transmitter (2). The two electrical connection ends are respectively fixed to one end of two wires (21). The other ends of the two wires (21) are respectively fixed and penetrate the side of the device body (1). A grounding plate 1 (3) and a grounding plate 2 (4) are respectively provided on the left and right sides of the device body (1). The grounding plate 1 (3) and the grounding plate 2 (4) are respectively electrically connected to the two wires (21). The signal transmitting device (2) comprises a charger and a signal transmitter, the charger is located inside the device body (1), the signal transmitter is located at the bottom of the charger and the signal transmitter is located outside the device body (1), and the top of the signal transmitting device (2) is electrically connected to a warning sounder (5); An extension device (6) is provided between the left side of the device body (1) and the grounding plate (3), and the extension device (6) comprises an extension tube (61), a fixed conductive block (62) and a movable conductive block (63). The extension tube (61) is fixed to the left side of the device body (1), the fixed conductive block (62) is fixedly mounted on the right side of the inner wall of the extension tube (61), and the right side of the fixed conductive block (62) is fixed to a wire (21). The movable conductive block (63) is movably sleeved inside the extension tube (61) and contacts the inner side of the extension tube (61). The right end of the grounding plate (3) is detachably mounted on the left side of the movable conductive block (63). The outer side of the extension tube (61) is fixedly mounted inside the protective sleeve (7), the protective sleeve (7) is fixed to the left side of the device body (1), the left side of the movable conductive block (63) is fixed to the mounting plate, a positioning nut is threadedly connected on the mounting plate, and the positioning nut is in contact with the grounding plate (3); A stabilizing device (8) is fixed inside the extension tube (61), a limiting opening is provided on the movable conductive block (63), the stabilizing device (8) contacts the inner wall of the limiting opening, and the top and bottom of the stabilizing device (8) are open, the top and bottom inner walls of the stabilizing device (8) are in close contact with the piston (81), a plurality of positioning plates (82) are fixed on one side of the piston (81), the positioning plates (82) are located outside the stabilizing device (8), and a control paddle (83) is slidably connected to the inner wall of the left end of the stabilizing device (8); The distance between each two adjacent positioning plates (82) is equal to the distance between the left and right sides of the movable conductive block (63), and a spring is provided between the control paddle (83) and the inner wall of the stabilizing device (8); The front and rear sides of the device body (1) are both provided with ventilation holes, and the front and rear sides of the inner wall of the device body (1) are both provided with adaptive devices (9), the adaptive devices (9) comprising two rotating shielding plates (91) and a thin-walled rubber bag (92), the rotating shielding plates (91) being rotatably mounted inside the device body (1), and the two sides of the thin-walled rubber bag (92) being fixed to the two rotating shielding plates (91) by hard connecting blocks.

2. The remote state monitoring device for the core grounding current of a distribution transformer according to claim 1, characterized in that: A resistor (22) is provided on the wire used to connect the warning sounder (5) and the signal transmitting device (2).

Images