CN110690026A

CN110690026A - Transformer with earth leakage protection structure

Info

Publication number: CN110690026A
Application number: CN201910898865.7A
Authority: CN
Inventors: 沈怀增
Original assignee: Anhui Hua Huan Electrical Equipment Co Ltd
Current assignee: Anhui Hua Huan Electrical Equipment Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-01-14

Abstract

The invention discloses a transformer with an electric leakage protection structure, which comprises a base station and a transformer body, wherein a concave cavity is arranged in the base station, a bottom plate is fixed at the bottom of the concave cavity, fixing plates are fixed at two ends of the bottom plate, a lead screw is rotatably arranged between the two fixing plates, two ends of the lead screw are connected with supporting seats through threads, two ends of each supporting seat are respectively hinged with the bottom end of an X-shaped support, the top end of the X-shaped support is respectively hinged with the lower surface of a top plate through a hinged support, and an insulating plate is fixed on the upper surface of the top plate. The invention can monitor leakage current and humidity information, when the detection data reach the set parameters, the motor is started to lift the transformer body upwards, the leakage current is cut off from being transmitted to the base station, the influence of the leakage phenomenon on the periphery of the base station is reduced, the influence caused by surface water accumulation is avoided, the influence on the surrounding environment when the transformer body leaks electricity is effectively avoided, and the safety of the transformer in use is improved.

Description

Transformer with earth leakage protection structure

Technical Field

The invention belongs to the technical field of transformer devices, and particularly relates to a transformer with a leakage protection structure.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core (magnetic core), wherein after the secondary of the transformer is connected with a load, the secondary of the transformer has current, and the primary of the transformer also induces a current. For an ideal transformer: the magnetic fluxes generated by the primary current and the secondary current are balanced with each other, and the main magnetic flux is unchanged. For an actual transformer: the two magnetic fluxes are not completely closed through the core, and a part of the two magnetic fluxes leak from the core, so that a reactance, namely a leakage reactance and an inductive leakage, are formed in the circuit. Capacitive currents to ground are also generated due to the presence of distributed capacitance of the windings. Therefore, all transformers in the market can generate leakage currents with different magnitudes.

The transformer is usually installed in a transformer room or at high altitude when installed. The transformer rooms are installed in a large number of areas such as communities, hospitals and factories, and leakage current can cause harm to pedestrians who pass by the transformer rooms on the ground. When an existing transformer is installed, the existing transformer is mostly fixed by adopting an insulating material. Along with the increase of live time, the condition that insulating properties descends can appear for be in danger area around the transformer, ponding or bottom surface humidity also can increase the harm of the electric leakage of transformer in addition, and at this moment, pedestrian and transformer management center all can't acquire the electric leakage situation of transformer substation fast, and the early warning in time can't take place to electrocute danger easily.

Disclosure of Invention

The present invention is directed to a transformer with leakage protection structure to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a transformer with earth leakage protection structure, includes base station and transformer body, the bottom of transformer body is fixed in the backup pad through insulating foot rest, the backup pad is placed on the base station surface, the inside of base station is equipped with the cavity, the cavity bottom is fixed with the bottom plate, the both ends of bottom plate are fixed with the fixed plate, two rotate between the fixed plate and install the lead screw, there is the supporting seat at the both ends of lead screw through threaded connection, every the both ends of supporting seat are articulated with the bottom of X type support respectively, the top of X type support is articulated with the roof lower surface through hank support respectively, the surface mounting has the insulation board on the roof, install first sensor assembly in the backup pad, second sensor assembly and alarm device are still installed on the surface of base station.

Preferably, the lead screw is a left-right rotating lead screw, the two supporting seats are respectively positioned at two sides of the lead screw, and one end of the lead screw is connected with a motor installed on the bottom plate.

Preferably, first sensor subassembly, second sensor subassembly, motor pass through the wire and are connected with alarm device and power, first sensor subassembly is current sensor, the second sensor subassembly includes current sensor and humidity transducer, the last antenna of installing of alarm device.

Preferably, a guide post is vertically fixed on the base station, and insulating sheaths are respectively fixed at four corners of the supporting plate and sleeved on the guide post.

Preferably, a sliding rod is further fixed between the fixing plates, the sliding rod is provided with two sides which are respectively located on the screw rod, and the sliding rod penetrates through the supporting seat in a sliding mode.

The invention has the technical effects and advantages that:

the invention monitors the magnitude of leakage current and ground humidity data in real time under the detection of a first sensor component and a second sensor component, when set parameters are reached, an alarm device sends out buzzing and light warning, and leakage alarm information is sent to a management center through an antenna, so that the transformer is managed in time, meanwhile, a motor is started to drive a screw rod to rotate, so that supporting seats on two sides are synchronously close, an X-shaped support horizontally pushes a top plate to rise, a supporting plate is lifted under the action of an insulating plate, the supporting plate is separated from a base station, the leakage current is cut off from being transmitted to the base station, the influence of leakage phenomenon on the periphery of the base station is reduced, after the height of the transformer body rises, the influence caused by ground water accumulation can be avoided, the safety performance of the transformer body is improved, and the influence on the periphery environment when the transformer body leaks electricity can be effectively, the safety of the transformer during use is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the base plate of the present invention;

fig. 3 is a schematic top view of the supporting plate of the present invention.

In the figure: the transformer comprises a base table 1, a first sensor assembly 2, a support plate 3, a second sensor assembly 4, a guide post 5, an alarm device 6, an insulating plate 7, a top plate 8, a support frame 9X, a motor 10, a lead screw 11, a bottom plate 12, a support seat 13, a fixing plate 14, a slide rod 15, an insulating sheath 16 and a transformer body 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, a transformer with a leakage protection structure includes a base 1 and a transformer body 17, the bottom of the transformer body 17 is fixed on the supporting plate 3 through an insulating foot stand, the supporting plate 3 is placed on the surface of the base station 1, a concave cavity is arranged inside the base platform 1, a bottom plate 12 is fixed at the bottom of the concave cavity, fixing plates 14 are fixed at two ends of the bottom plate 12, a screw rod 11 is rotatably arranged between the two fixing plates 14, two ends of the screw rod 11 are connected with supporting seats 13 through threads, two ends of each supporting seat 13 are respectively hinged with the bottom end of the X-shaped bracket 9, the top end of the X-shaped support 9 is hinged with the lower surface of the top plate 8 through a hinged support respectively, an insulating plate 7 is fixed on the upper surface of the top plate 8, the supporting plate 3 is provided with a first sensor assembly 2, and the surface of the base platform 1 is also provided with a second sensor assembly 4 and an alarm device 6.

The screw rod 11 is a left-right screw rod, the two supporting seats 13 are respectively positioned on two sides of the screw rod 11, and one end of the screw rod 11 is connected with the motor 10 installed on the bottom plate 12. The screw rod 11 is driven to rotate by the motor 10, so that the supporting seats 13 on the two sides are synchronously close to or far away from by the screw transmission of the screw rod 11, and the X-shaped support 9 is lifted or lowered.

First sensor module 2, second sensor module 4, motor 10 pass through the wire and are connected with alarm device 6 and power, first sensor module 2 is current sensor, second sensor module 4 includes current sensor and humidity transducer, alarm device 6 is last to install the antenna. The power supply adopts a power supply at the output end of a transformer body 17 and a storage battery, the endurance is stable, a first sensor component 2 is used for detecting whether leakage current is transmitted to a support plate 3 or not, a second sensor component 4 is used for detecting the magnitude of the leakage current on a base station 1 and humidity information on the base station 1, the first sensor component 2 and the second sensor component 4 transmit detection data to an alarm device 6, when the detection data reaches a set value, a motor 10 is controlled to start, so that the support plate 3 is lifted upwards to enable the support plate 3 to leave the base station 1, the leakage current is cut off and transmitted to the base station 1, the influence of leakage phenomena on the periphery of the base station 1 is reduced, after the height of the transformer body 17 is raised, the influence caused by ground water accumulation can be avoided, the safety performance of the transformer body 17 is improved, meanwhile, the leakage information is transmitted to a management center through an antenna, be convenient for in time manage the transformer, dispose bee calling organ and warning light on alarm device 6, be convenient for in time send out the police dispatch newspaper around to, warn the pedestrian and avoid being close to.

The base station 1 is also vertically fixed with a guide post 5, four corners of the supporting plate 3 are respectively fixed with an insulating sheath 16, and the insulating sheath 16 is sleeved on the guide post 5. By utilizing the guide post 5, the support plate 3 can be stabilized, the support plate 3 is prevented from inclining, the safety of the transformer body 17 is guaranteed, and leakage current is prevented from being transmitted to the guide post 5 under the protection of the insulating sheath 16.

A sliding rod 15 is further fixed between the fixing plates 14, two sliding rods 15 are respectively arranged on two sides of the screw rod 11, and the sliding rod 15 penetrates through the supporting seat 13 in a sliding mode. The support base 13 is slidably attached to the bottom plate 12, and the support base 13 can be guided in a limited manner by the slide bar 15, thereby improving the stability of the support base 13.

Specifically, when in use, under the detection of the first sensor component 2 and the second sensor component 4, the magnitude of leakage current and ground humidity data are monitored in real time, when set parameters are reached, the alarm device 6 sends out buzzing and light warning, and sends leakage alarm information to a management center through an antenna, so that the transformer is managed in time, meanwhile, the starting motor 10 drives the screw rod 11 to rotate, so that the supporting seats 13 on the two sides are synchronously close to each other, the X-shaped support 9 horizontally pushes the top plate 8 to rise, the supporting plate 3 is lifted under the action of the insulating plate 7, the supporting plate 3 is separated from the base station 1, the leakage current is cut off and transmitted to the base station 1, the influence of the leakage phenomenon on the periphery of the base station 1 is reduced, after the height of the transformer body 17 rises, the influence caused by ground water accumulation can be avoided, and the safety performance of the transformer body 17 is, the influence on the surrounding environment when the transformer body 17 leaks electricity can be effectively avoided, and the safety of the transformer in use is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a transformer with earth leakage protection structure, includes base station (1) and transformer body (17), its characterized in that: the bottom of the transformer body (17) is fixed on the supporting plate (3) through an insulating foot rest, the supporting plate (3) is placed on the surface of the base platform (1), a concave cavity is arranged inside the base platform (1), a bottom plate (12) is fixed at the bottom of the concave cavity, fixing plates (14) are fixed at two ends of the bottom plate (12), a screw rod (11) is rotatably arranged between the two fixing plates (14), two ends of the screw rod (11) are connected with supporting seats (13) through threads, two ends of each supporting seat (13) are respectively hinged with the bottom end of the X-shaped bracket (9), the top end of the X-shaped bracket (9) is respectively hinged with the lower surface of the top plate (8) through a hinge support, an insulating plate (7) is fixed on the upper surface of the top plate (8), a first sensor component (2) is arranged on the supporting plate (3), and a second sensor assembly (4) and an alarm device (6) are further mounted on the surface of the base platform (1).

2. A transformer with a leakage protection structure according to claim 1, wherein: the screw rod (11) is a left-right screw rod, the two supporting seats (13) are respectively positioned on two sides of the screw rod (11), and one end of the screw rod (11) is connected with a motor (10) installed on the bottom plate (12).

3. A transformer with a leakage protection structure according to claim 2, wherein: first sensor subassembly (2), second sensor subassembly (4), motor (10) pass through the wire and are connected with alarm device (6) and power, first sensor subassembly (2) are current sensor, second sensor subassembly (4) include current sensor and humidity transducer, install the antenna on alarm device (6).

4. A transformer with a leakage protection structure according to claim 1, wherein: the base station (1) is also vertically fixed with a guide post (5), four corners of the supporting plate (3) are respectively fixed with an insulating sheath (16), and the insulating sheaths (16) are sleeved on the guide post (5).

5. A transformer with a leakage protection structure according to claim 1, wherein: and a sliding rod (15) is further fixed between the fixing plates (14), two sliding rods (15) are arranged on two sides of the screw rod (11), and the sliding rods (15) penetrate through the supporting seat (13) in a sliding mode.