CN210129025U

CN210129025U - Direct current grounding detection device of transformer substation

Info

Publication number: CN210129025U
Application number: CN201920376843.XU
Authority: CN
Inventors: 骆津海
Original assignee: Tianjin Foreshore Electric Power Engineering Co Ltd
Current assignee: Tianjin Foreshore Electric Power Engineering Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-03-06
Anticipated expiration: 2029-03-22

Abstract

The utility model discloses a transformer substation's direct current ground connection detection device, including insulating casing, dry battery, direct current air switch, warning light and intelligent display screen, the dry battery is installed to insulating casing's bottom, and it has two warning lights to inlay on the insulating casing lateral wall of dry battery position department, insulating casing's mid-mounting has the memory, is equipped with regulating switch on the insulating casing lateral wall of memory position department, install the intelligent display screen on the lateral wall at insulating casing top, insulating casing's top is equipped with the singlechip, the inside direct current air switch that is fixed with of insulating casing of singlechip top, direct current air switch's bottom is connected with the input electricity of singlechip. The utility model discloses not only improve the convenience when detection device uses, improved detection device's practicality, guaranteed the relative safety when detection device uses moreover.

Description

Direct current grounding detection device of transformer substation

Technical Field

The utility model relates to a ground connection detection device technical field specifically is a direct current ground connection detection device of transformer substation.

Background

In the operation process of a power grid of a transformer substation, a fault of a direct current system may cause a corresponding protection circuit to be abnormal, so that a protection device is subjected to misoperation or failure, therefore, in actual operation, a direct current grounding condition needs to be periodically searched, a main detection process of the method is to judge the polarity of a grounding fault through a corresponding detection device, and then subdivide the cause of the fault.

However, the existing transformer substation direct current grounding detection device still has certain problems, and the specific problems are as follows:

1. the general detection device lacks a convenient adjusting and detecting mechanism, and the operation process is relatively complex and the applicable environment is narrow in the using process of the detection device;

2. the prior detection device lacks intelligent display and storage functions, so that the practical performance of the detection device has defects;

3. the inside of a general detection device is lack of an effective insulation protection structure, and the relative safety of the detection device in use is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer substation's direct current ground connection detection device to the detection flow of proposing the device in solving above-mentioned background art is inconvenient relatively, practicality has the defect, has the potential safety hazard problem.

In order to achieve the above object, the utility model provides a following technical scheme: a transformer substation direct current grounding detection device comprises an insulating shell, a dry battery, a direct current air switch, a warning lamp and an intelligent display screen, a dry battery is arranged at the bottom of the insulating shell, two warning lamps are embedded on the outer side wall of the insulating shell at the position of the dry battery, the middle part of the insulating shell is provided with a memory, the outer side wall of the insulating shell at the position of the memory is provided with an adjusting switch, an intelligent display screen is arranged on the outer side wall of the top of the insulating shell, a singlechip is arranged on the top of the insulating shell, the output end of the singlechip is respectively and electrically connected with the memory, the warning light and the input end of the intelligent display screen, the input end of the singlechip is electrically connected with the output end of the regulating switch, and a direct current air switch is fixed in the insulating shell above the single chip microcomputer, and the bottom end of the direct current air switch is electrically connected with the input end of the single chip microcomputer.

Preferably, the top of the insulating housing is provided with a conductive wire, two ends of the conductive wire are both provided with insulating contacts, and one end of each insulating contact penetrates through the insulating housing and is electrically connected with the top end of the direct current air switch.

Preferably, one side of the insulating shell is provided with a grab handle, and the bottom end of the grab handle is fixedly connected with the other end of the insulating contact.

Preferably, the inside of grab handle is equipped with the copper alloy conducting layer, and the copper alloy conducting layer is connected with insulating contact electricity, and the parcel has the polymer insulation layer on the lateral wall of copper alloy conducting layer simultaneously, is fixed with the ceramic protective layer on the lateral wall of polymer insulation layer.

Preferably, the inside central point department of putting of grab handle is equipped with the cavity passageway, and the internally mounted of cavity passageway has the conducting rod, and the lateral wall of conducting rod and the inside wall of copper alloy conducting layer contact each other, and the top of conducting rod extends to the top of grab handle and welds the pothook simultaneously.

Preferably, a push block is fixed on the outer side wall of the bottom of the conductive rod, a limiting sliding groove is formed in the side wall of the grab handle, and one end of the push block penetrates through the limiting sliding groove and extends to the outside of the grab handle.

Compared with the prior art, the beneficial effects of the utility model are that: the direct current grounding detection device of the transformer substation not only improves the convenience of the detection device in use and the practicability of the detection device, but also ensures the relative safety of the detection device in use;

1. the adjusting switch is arranged on the outer side wall of the insulating shell, the conductive wire and the grab handle are arranged at the top of the insulating shell, the copper alloy conductive layer, the conductive rod and the limiting sliding groove are arranged in the grab handle, the grab hook is welded at the top end of the conductive rod, and the push block is fixed at the bottom of the conductive rod, so that the functions of the detection device, such as convenience in adjustment and detection, are realized, and the convenience in use of the detection device is improved;

2. the warning lamp and the intelligent display screen are arranged on the outer side wall of the insulating shell, the memory is arranged in the middle of the insulating shell, and the singlechip is arranged at the top of the insulating shell, so that the intelligent display and automatic storage functions of the detection device are realized, and the practicability of the detection device is improved;

3. through the inside fixed direct current air switch at insulating casing, the both ends installation insulation contact of conductor wire to establish polymer insulating layer, ceramic protective layer through the inside at the grab handle, realized the inside multiple insulation protection's of detection device structure, thereby guaranteed the relative safety when detection device uses.

Drawings

Fig. 1 is a schematic sectional front view structure diagram of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of the handle of the present invention;

fig. 4 is a schematic diagram of the system framework structure of the present invention.

In the figure: 1. an insulating housing; 2. dry batteries; 3. a memory; 4. a single chip microcomputer; 5. a direct current air switch; 6. a conductive wire; 7. a hook; 8. a handle; 9. a conductive rod; 10. a hollow channel; 11. an insulated contact; 12. a warning light; 13. an adjustment switch; 14. an intelligent display screen; 15. a limiting chute; 16. a push block; 17. a ceramic protective layer; 18. a polymer insulating layer; 19. a copper alloy conductive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a transformer substation direct current grounding detection device comprises an insulating shell 1, dry batteries 2, a direct current air switch 5, warning lamps 12 and an intelligent display screen 14, wherein the dry batteries 2 are installed AT the bottom of the insulating shell 1, two warning lamps 12 are embedded on the outer side wall of the insulating shell 1 AT the positions of the dry batteries 2, the types of the warning lamps 12 can be AD16-22D, a storage 3 is installed in the middle of the insulating shell 1, the type of the storage 3 can be AT24C04, an adjusting switch 13 is arranged on the outer side wall of the insulating shell 1 AT the position of the storage 3, the type of the adjusting switch 13 can be B3AL-1001P, the intelligent display screen 14 is installed on the outer side wall of the top of the insulating shell 1, the type of the intelligent display screen 14 can be FC1440, a single chip microcomputer 4 is arranged AT the top of the insulating shell 1, the type of the single chip microcomputer 4 can be SH69P25, and the output end of the, The warning light 12 is electrically connected with the input end of the intelligent display screen 14, the input end of the singlechip 4 is electrically connected with the output end of the regulating switch 13, the insulating shell 1 above the singlechip 4 is internally fixed with a direct current air switch 5, the model of the direct current air switch 5 can be DZ47-63, the bottom end of the direct current air switch 5 is electrically connected with the input end of the singlechip 4, the top of the insulating shell 1 is provided with a conducting wire 6, two ends of the conducting wire 6 are both provided with insulating contacts 11, one end of each insulating contact 11 penetrates through the insulating shell 1 and is electrically connected with the top end of the direct current air switch 5 for transmitting electric signals, one side of the insulating shell 1 is provided with a grab handle 8, the bottom end of the grab handle 8 is fixedly connected with the other end of the insulating contact 11 for convenient holding, a copper alloy conducting layer 19 is arranged inside the grab handle 8, and the copper alloy, a current path consisting of the insulated contact 11, the copper alloy conductive layer 19 and the conductive rod 9 is formed, used for detection, the outer side wall of the copper alloy conducting layer 19 is wrapped with a polymer insulating layer 18, the outer side wall of the polymer insulating layer 18 is fixed with a ceramic protective layer 17, used for internal power connection and double protection, a hollow channel 10 is arranged at the central position inside the grab handle 8, a conductive rod 9 is arranged inside the hollow channel 10, the outer side wall of the conductive rod 9 is contacted with the inner side wall of the copper alloy conductive layer 19, meanwhile, the top end of the conductive rod 9 extends to the upper part of the grab handle 8 and is welded with the hook 7, used for contacting with the grounding current, a push block 16 is fixed on the outer side wall of the bottom of the conducting rod 9, a limit sliding groove 15 is arranged on the side wall of the grab handle 8, and one end of the push block 16 passes through the limit sliding groove 15 and extends to the outside of the grab handle 8, so that the length of the conducting rod 9 can be conveniently adjusted.

The working principle is as follows: when in use, firstly, the detection device is in the maximum measurement range by operating the adjusting switch 13, then, a user can push the push block 16 according to actual needs, so that the conducting rod 9 fixedly connected with the push block 16 extends out of the top of the handle 8 along the hollow channel 10 by a corresponding length, thereby facilitating the mutual contact of the hook 7 and the near or far transformer substation direct current grounding equipment and circuits, at the moment, grounding current is conveyed to the inside of the singlechip 4 for analysis processing through the hook 7, the conducting rod 9, the copper alloy conducting layer 19, the conducting wire 6 and the direct current air switch 5, at the moment, the user can operate the adjusting switch 13 again, so that the measurement precision is gradually improved, meanwhile, the singlechip 4 inputs the analysis result into the memory 3 for storage, and dynamically displays through the intelligent display screen 14, if the detection is qualified, the green warning lamp 12 lights up, on the contrary, the red warning lamp 12 is turned on, in addition, the ceramic protective layer 17, the polymer insulating layer 18 and the insulating contacts 11 at the two ends of the conductive wire 6 inside the grab handle 8 form a multiple insulation protection structure, if the grounding current exceeds the maximum range, the direct current air switch 5 is automatically cut off, and meanwhile, the buzzer inside the single chip microcomputer 4 automatically gives an alarm, so that safety accidents are avoided, and finally, all the work of the direct current grounding detection device of the transformer substation is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which 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.

Claims

1. The utility model provides a transformer substation's direct current ground connection detection device, includes insulating housing (1), dry battery (2), direct current air switch (5), warning light (12) and intelligent display screen (14), its characterized in that: the dry battery (2) is installed at the bottom of the insulating shell (1), two warning lamps (12) are embedded on the outer side wall of the insulating shell (1) at the position of the dry battery (2), a memory (3) is installed in the middle of the insulating shell (1), an adjusting switch (13) is arranged on the outer side wall of the insulating shell (1) at the position of the memory (3), an intelligent display screen (14) is installed on the outer side wall of the top of the insulating shell (1), a single chip microcomputer (4) is arranged at the top of the insulating shell (1), the output end of the single chip microcomputer (4) is respectively electrically connected with the input ends of the memory (3), the warning lamps (12) and the intelligent display screen (14), the input end of the single chip microcomputer (4) is electrically connected with the output end of the adjusting switch (13), and a direct current air switch (5) is fixed inside the insulating shell (1, and the bottom end of the direct current air switch (5) is electrically connected with the input end of the singlechip (4).

2. The substation direct current grounding detection device of claim 1, wherein: the top of insulating casing (1) is equipped with conductor wire (6), and insulating contact (11) are all installed at the both ends of conductor wire (6), and the one end of insulating contact (11) passes insulating casing (1) and is connected with the top electricity of direct current air switch (5).

3. A substation dc ground detection device according to claim 2, characterized in that: one side of the insulating shell (1) is provided with a grab handle (8), and the bottom end of the grab handle (8) is fixedly connected with the other end of the insulating contact (11).

4. A substation dc ground detection device according to claim 3, characterized in that: the inside of grab handle (8) is equipped with copper alloy conducting layer (19), and copper alloy conducting layer (19) are connected with insulating contact (11) electricity, and the parcel has polymer insulation layer (18) on the lateral wall of copper alloy conducting layer (19) simultaneously, is fixed with ceramic protective layer (17) on the lateral wall of polymer insulation layer (18).

5. A substation direct current grounding detection device according to claim 4, characterized in that: the utility model discloses a grab handle, including grab handle (8), grab handle (8) and conducting rod (9), the inside central point department of putting of grab handle (8) is equipped with hollow channel (10), and the internally mounted of hollow channel (10) has conducting rod (9), and the lateral wall of conducting rod (9) and the inside wall of copper alloy conducting layer (19) contact each other, and the top of conducting rod (9) extends to the top of grab handle (8) and welds pothook (7) simultaneously.

6. A substation direct current grounding detection device according to claim 5, characterized in that: the conducting rod is characterized in that a push block (16) is fixed on the outer side wall of the bottom of the conducting rod (9), a limiting sliding groove (15) is formed in the side wall of the grab handle (8), and one end of the push block (16) penetrates through the limiting sliding groove (15) and extends to the outside of the grab handle (8).