CN215496261U

CN215496261U - Winding leakage protection device of power system transformer

Info

Publication number: CN215496261U
Application number: CN202122070534.XU
Authority: CN
Inventors: 娄钊瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-11
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses a winding leakage protection device of a power system transformer, which comprises a connecting plate, wherein fire extinguisher placing boxes are respectively arranged at two ends of one side of the connecting plate, insulating layers are respectively arranged on the periphery inside the fire extinguisher placing boxes, a carbon dioxide fire extinguisher is arranged at the bottom end inside the fire extinguisher placing boxes, and a control valve is arranged at the output end of the carbon dioxide fire extinguisher. If the cooling device on the transformer is damaged due to electric leakage of the transformer, the winding in the transformer can be ignited due to high temperature, the temperature sensing probe is arranged on the connecting plate, when the temperature reaches a certain degree, the temperature sensing probe outputs a signal to the control panel, and the control panel starts the control valve after receiving the signal, so that the carbon dioxide fire extinguisher is opened, the oxygen content around the transformer is reduced, the fire is slowed down, people around the transformer can conveniently leave the site, casualties of people are avoided, and rescue time is provided for workers.

Description

Winding leakage protection device of power system transformer

Technical Field

The utility model relates to the technical field of leakage protection, in particular to a winding leakage protection device of a power system transformer.

Background

At present, a large number of power system transformers are used in a power system, windings in the transformers are also one of the most basic components of the transformers, the windings are circuit parts of the transformers and are generally wound by copper wires or aluminum wires wrapped by insulating paper, the windings connected to a high-voltage power grid are high-voltage windings, the windings connected to a low-voltage power grid are low-voltage windings, and large-scale power transformers adopt concentric windings. High and low voltage windings are concentrically sleeved on an iron core column, the low voltage winding is close to the iron core, and the high voltage winding is arranged on the outer side.

When the inside electric leakage phenomenon that appears of transformer winding, can cause the metal casing of transformer to electrically conduct, because the model of transformer is different, the mounting means of transformer is also different, there is direct mount subaerial, some then install on the wire pole, if install subaerial transformer the problem that electric leakage appears, especially in rainy day, can cause the casualty accident, and can cause the cooling device damage on the transformer, make the inside temperature of transformer rise, the staff has the processing in a long-time, can cause the transformer to catch fire, not only can cause the casualties of personnel, still can cause the transformer to burn out simultaneously.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a winding leakage protection device for a transformer in an electrical power system, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a winding leakage protection device of a power system transformer comprises a connecting plate, fire extinguisher placing boxes are respectively arranged at two ends of one side of the connecting plate, insulating layers are respectively arranged on the peripheries of the interiors of the fire extinguisher placing boxes, carbon dioxide fire extinguishers are arranged at the bottom ends of the interiors of the fire extinguisher placing boxes, control valves are arranged at the output ends of the carbon dioxide fire extinguishers, an electric box is arranged at the middle position of one side, close to the fire extinguisher placing boxes, of the connecting plate, a control panel is arranged at the middle position, far away from one side of the fire extinguisher placing boxes, of the outer surface of the electric box, a warning horn is arranged at the top of one side, far away from the fire extinguisher placing boxes, a high-temperature-resistant isolating layer is arranged at the periphery of the interiors of the electric boxes, a metal plate is arranged at the middle position, far away from one side of the electric boxes, of the connecting plate, a temperature sensing probe is arranged at the top of one side, far away from the electric boxes, of the connecting plate, the utility model discloses a temperature sensing device, including connecting plate, spout, fixing plate, support, warning loudspeaker and earth connection, the earth connection is installed to the bottom of connecting plate, the outer surface mounting of earth connection has insulating cover, the slide is all installed at the both ends that the connecting plate was kept away from electronic box one side, there is the fixed plate one side that the electronic box was kept away from to the slide through spout slidable mounting, the lug is installed to the one end that the connecting plate was kept away from to the fixed plate, the support is all installed to the both ends of connecting plate bottom and the bottom of fixed plate, electric connection between control panel and the temperature-sensing probe and the control valve.

Preferably, both ends of one side of the connecting plate, which is far away from the sliding plate, are provided with grooves, and the size of each groove in the connecting plate is matched with the size of the fire extinguisher placing box.

Preferably, a fixing groove is formed in the middle of one side, away from the sliding plate, of the connecting plate, and the size of the fixing groove in the connecting plate is matched with that of the electric box.

Preferably, the bottom of the control valve is connected with the output end of the carbon dioxide fire extinguisher, the top of the control valve is communicated with a pipeline, and the pipeline on the control valve penetrates through the fire extinguisher placing box and the connecting plate and extends to the outside.

Preferably, one side of the metal plate, which is close to the fire extinguisher placing box, is provided with a convex block, the convex block on the metal plate penetrates through the connecting plate and the electric box and extends to the inside of the electric box, and the grounding wire penetrates through the bottom of the connecting plate and the electric box and extends to the inside of the electric box to be connected with the convex block on the metal plate.

Preferably, the fixed plate is close to the intermediate position of electronic box one side and has seted up the spout, spout size and the size looks adaptation of slide plate on the fixed plate, the through-hole has all been seted up to the top and the bottom that the journal stirrup is close to electronic box one side, the one end that slide plate and fixed plate are close to the journal stirrup all is provided with the screw hole.

Compared with the prior art, the utility model has the beneficial effects that:

1. this winding earth leakage protection device of power system transformer through set up the metal sheet on the connecting plate, because the shell of metal sheet and transformer contacts, if the condition of electric leakage appears in the metal casing of transformer, the electric current can be along the earth connection on the metal sheet, with the leading-in underground of electric current, avoid appearing the casualties accident, the warning loudspeaker that is connected with the earth connection simultaneously also can sound, remind people around to let them inform the staff, let the staff maintain the transformer.

2. This winding earth leakage protection device of power system transformer if because the transformer leaks electricity, cause the cooling device on the transformer to damage, at this moment the inside winding of transformer can be because of high temperature is on fire, because be provided with temperature-sensing probe on the connecting plate, after the temperature reaches certain degree, temperature-sensing probe is to control panel output signal, after control panel received signal, start the control valve, make the carbon dioxide fire extinguisher open, reduce the oxygen content around the transformer, slow down the intensity of a fire, make things convenient for people around to withdraw the scene, avoid the casualties of personnel, and provide rescue time for the staff.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a front view of the internal structure of the connecting plate of the present invention;

fig. 5 is a side view of the internal structure of the fixing plate of the present invention.

In the figure: 1. a connecting plate; 2. a fire extinguisher placing box; 3. an insulating layer; 4. a carbon dioxide extinguisher; 5. a control valve; 6. an electric box; 7. a control panel; 8. a warning horn; 9. a high temperature resistant isolation layer; 10. a metal plate; 11. a temperature sensing probe; 12. an insulating sleeve; 13. a ground line; 14. supporting a lug; 15. a slide plate; 16. a fixing plate; 17. and (4) a bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.

Referring to fig. 1-5, an embodiment of the present invention is shown: a winding leakage protection device of a power system transformer comprises a connecting plate 1, fire extinguisher placing boxes 2 are respectively arranged at two ends of one side of the connecting plate 1, insulating layers 3 are respectively arranged on the peripheries of the interiors of the fire extinguisher placing boxes 2, carbon dioxide fire extinguishers 4 are arranged at the bottom ends of the interiors of the fire extinguisher placing boxes 2, control valves 5 are arranged at the output ends of the carbon dioxide fire extinguishers 4, an electric box 6 is arranged at the middle position, close to one side of the fire extinguisher placing boxes 2, of the connecting plate 1, a control panel 7 is arranged at the middle position, far away from one side of the fire extinguisher placing boxes 2, of the outer surface of the electric box 6, a warning horn 8 is arranged at the top part, far away from one side of the fire extinguisher placing boxes 2, of the outer surface of the electric box 6, a high-temperature resistant isolating layer 9 is arranged on the periphery of the interior of the electric box 6, a metal plate 10 is arranged at the middle position, far away from one side of the electric box 6, of the connecting plate 1, a temperature sensing probe 11 is arranged at the top part, far away from one side of the electric box 6, earth connection 13 is installed to the bottom of connecting plate 1, the outer surface mounting of earth connection 13 has insulating cover 12, slide 15 is all installed at the both ends that connecting plate 1 kept away from electronic box 6 one side, slide 15 keeps away from one side of electronic box 6 and has fixed plate 16 through spout slidable mounting, lug 14 is installed to the one end that connecting plate 1 was kept away from to fixed plate 16, support 17 is all installed to the both ends of connecting plate 1 bottom and the bottom of fixed plate 16, electric connection between warning loudspeaker 8 and earth connection 13, electric connection between control panel 7 and temperature-sensing probe 11 and the control valve 5.

In this implementation, the both ends that slide 15 one side was kept away from to connecting plate 1 all are seted up flutedly, and the recess size on the connecting plate 1 places the size looks adaptation of case 2 with the fire extinguisher, places case 2 through the recess on the connecting plate 1 with the fire extinguisher and stably firmly installs on connecting plate 1.

In this implementation, the fixed slot has been seted up to the intermediate position that connecting plate 1 kept away from slide 15 one side, and the fixed slot size on connecting plate 1 and the size looks adaptation of electronic box 6 are through the fixed slot on connecting plate 1 with the stable firm installation of electronic box 6 on connecting plate 1.

In this implementation, the bottom of control valve 5 is connected with the output of carbon dioxide fire extinguisher 4, and the top of control valve 5 and pipeline switch-on mutually, and the pipeline on the control valve 5 runs through the fire extinguisher and places case 2 and connecting plate 1 and extend to the outside, controls control valve 5 through control panel 7, discharges the carbon dioxide in the carbon dioxide fire extinguisher 4 from the pipeline, reaches the purpose that slows down the transformer fire.

In this implementation, the metal sheet 10 is close to the fire extinguisher and places one side of case 2 and be provided with the lug, lug on the metal sheet 10 runs through connecting plate 1 and electronic box 6 and extends to the inside of electronic box 6, earth connection 13 runs through the bottom of connecting plate 1 and electronic box 6 and extends to the inside of electronic box 6 and is connected with the lug on the metal sheet 10, because the shell of metal sheet 10 and transformer contacts, with the electric current on the transformer shell along the earth connection 13 on the metal sheet 10, make the electric current leading-in underground, avoid appearing the casualties accident.

In this implementation, the fixed plate 16 is close to the intermediate position of electronic box 6 one side and has seted up the spout, spout size on the fixed plate 16 and slide 15's size looks adaptation, the through-hole has all been seted up to the top and the bottom that journal stirrup 14 is close to electronic box 6 one side, slide 15 and fixed plate 16 are close to the one end of journal stirrup 14 and all are provided with the screw hole, the staff can be according to the size of transformer, then the staff can pass the spout on slide 15 and the fixed plate 16, realize the purpose of changing the device size, pass the screw hole on fixed plate 16 and the slide 15 with the bolt at last and fix, avoid the size of device to change.

The working principle is as follows: when the transformer is used, two connecting plates 1 can be installed on the transformer through the through holes on the support lugs 14 by bolts, meanwhile, the workers can pass through the sliding grooves on the sliding plate 15 and the fixing plate 16 and fix the connecting plates through the threaded holes on the fixing plate 16 and the sliding plate 15 by bolts, meanwhile, the workers can be connected with a support frame at the bottom of the transformer through the bracket 17, the device is stably and firmly installed on the support frame, because the metal plate 10 is contacted with the shell of the transformer, if the metal shell of the transformer has electric leakage, the current can be led into the ground along the grounding wire 13 on the metal plate 10, so that casualty accidents are avoided, meanwhile, the warning horn 8 connected with the grounding wire 13 can sound, because the transformer has electric leakage, the cooling device on the transformer is damaged, and at the moment, the winding inside the transformer can be ignited due to high temperature, because the temperature sensing probe 11 is arranged on the connecting plate 1, when the temperature reaches a certain degree, the temperature sensing probe 11 outputs a signal to the control panel 7, and after the control panel 7 receives the signal, the control valve 5 is started to open the carbon dioxide fire extinguisher 4, so that the oxygen content around the transformer is reduced, and the purpose of slowing down the fire is achieved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or scope of the present invention. Accordingly, the embodiments of the utility model are exemplary, but not limiting. The scope of the utility model is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a winding earth-leakage protection device of power system transformer, includes connecting plate (1), its characterized in that: the fire extinguisher cabinet is characterized in that fire extinguisher placing boxes (2) are installed at two ends of one side of a connecting plate (1), insulating layers (3) are installed around the inside of each fire extinguisher placing box (2), a carbon dioxide fire extinguisher (4) is installed at the bottom end of the inside of each fire extinguisher placing box (2), a control valve (5) is installed at the output end of each carbon dioxide fire extinguisher (4), an electronic box (6) is installed at the middle position, close to one side of each fire extinguisher placing box (2), of the connecting plate (1), a control panel (7) is installed at the middle position, far away from one side of each fire extinguisher placing box (2), of the outer surface of the electronic box (6), a warning horn (8) is installed at the top, far away from one side of each fire extinguisher placing box (2), a high-temperature resistant isolation layer (9) is installed around the inside of each electronic box (6), and a metal plate (10) is installed at the middle position, far away from one side of each electronic box (6), of the connecting plate (1), the top of one side of the connecting plate (1) far away from the electric box (6) is provided with a temperature sensing probe (11), the bottom of the connecting plate (1) is provided with a grounding wire (13), the outer surface of the grounding wire (13) is provided with an insulating sleeve (12), both ends of one side of the connecting plate (1) far away from the electric box (6) are respectively provided with a sliding plate (15), a fixed plate (16) is arranged on one side of the sliding plate (15) far away from the electric box (6) in a sliding way through a sliding chute, one end of the fixing plate (16) far away from the connecting plate (1) is provided with a support lug (14), both ends of the bottom of the connecting plate (1) and the bottom of the fixing plate (16) are provided with brackets (17), the warning horn (8) is electrically connected with the grounding wire (13), and the control panel (7) is electrically connected with the temperature sensing probe (11) and the control valve (5).

2. A winding leakage protection device for a transformer of an electric power system according to claim 1, characterized in that: the two ends of one side, away from the sliding plate (15), of the connecting plate (1) are provided with grooves, and the size of each groove in the connecting plate (1) is matched with the size of the fire extinguisher containing box (2).

3. A winding leakage protection device for a transformer of an electric power system according to claim 1, characterized in that: the middle position of one side, far away from the sliding plate (15), of the connecting plate (1) is provided with a fixing groove, and the size of the fixing groove in the connecting plate (1) is matched with that of the electric box (6).

4. A winding leakage protection device for a transformer of an electric power system according to claim 1, characterized in that: the bottom of the control valve (5) is connected with the output end of the carbon dioxide fire extinguisher (4), the top of the control valve (5) is communicated with a pipeline, and the pipeline on the control valve (5) penetrates through the fire extinguisher placing box (2) and the connecting plate (1) and extends to the outside.

5. A winding leakage protection device for a transformer of an electric power system according to claim 1, characterized in that: one side of the metal plate (10) close to the fire extinguisher placing box (2) is provided with a convex block, the convex block on the metal plate (10) penetrates through the connecting plate (1) and the electric box (6) and extends to the inside of the electric box (6), and the grounding wire (13) penetrates through the bottom of the connecting plate (1) and the electric box (6) and extends to the inside of the electric box (6) to be connected with the convex block on the metal plate (10).

6. A winding leakage protection device for a transformer of an electric power system according to claim 1, characterized in that: the utility model discloses a cable box, including fixed plate (16), fixing plate (16), the intermediate position that is close to electronic box (6) one side has seted up the spout, the spout size on fixed plate (16) and the size looks adaptation of slide (15), the top and the bottom that journal stirrup (14) are close to electronic box (6) one side have all seted up the through-hole, the one end that slide (15) and fixed plate (16) are close to journal stirrup (14) all is provided with the screw hole.