CN213069135U

CN213069135U - External DC arrester on-line monitoring appearance

Info

Publication number: CN213069135U
Application number: CN202021981536.3U
Authority: CN
Inventors: 曹小锋; 冯冬
Original assignee: Shaanxi Shixiang Elec Tech Co ltd
Current assignee: Shaanxi Shixiang Elec Tech Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-04-27
Anticipated expiration: 2030-09-11

Abstract

The utility model belongs to the technical field of the arrester monitoring, concretely relates to external direct current arrester on-line monitoring appearance, include: the lightning arrester comprises a base, a detection assembly and an umbrella skirt, wherein the umbrella skirt is arranged above the base, the detection assembly is arranged between the umbrella skirt and the base, and a connecting piece is further arranged at the top of the umbrella skirt; the monitoring device comprises a monitoring body and a data acquisition assembly, wherein the data acquisition assembly is arranged inside the lightning arrester, the monitoring body is arranged outside the lightning arrester and fixed on the base, and the monitoring body is connected with the data acquisition assembly through a connecting wire. The arrester on-line monitoring appearance of this scheme of adoption has effectively solved among the prior art arrester on-line monitoring device when appearing the potential safety hazard the installation dismantle inconvenient and lead to work efficiency low, and the comparatively complicated problem of structure.

Description

External DC arrester on-line monitoring appearance

Technical Field

The utility model belongs to the technical field of the arrester monitoring, concretely relates to external direct current arrester on-line monitoring appearance.

Background

At present, a zinc oxide arrester is the most commonly used arrester, the performance of the zinc oxide arrester directly affects the safe operation of a power system, when the zinc oxide arrester (MOA) is in actual operation, after internal aging and moisture, resistive current can be greatly increased, the temperature of a valve plate of the zinc oxide arrester is increased, once overvoltage is generated in the system, the arrester can be subjected to thermal breakdown and even the arrester explodes, so that the arrester loses the protection effect, the aging of the MOA arrester is not enough to be found by one-year pretesting, even if the MOA arrester qualified in the pretesting is in operation, breakdown damage can be caused, the protection characteristic is reduced, an extremely serious result can be generated, and the operation state of the arrester needs to be monitored on line to ensure the safe operation of the MOA arrester.

In the existing online monitoring device, because a plurality of lightning arrester online monitors are included in a transformer substation, faults cannot be found in time through manual visual inspection, and further regular detection of all the lightning arrester online monitors cannot be realized, so that great potential safety hazards exist. And if all arrester on-line monitoring appearance are dismantled from ground return circuit, then transport arrester on-line monitoring appearance back and detect, then can waste a large amount of manpower and materials for work efficiency is low.

In view of the above, there is a need to improve an online monitoring device for an arrester in the prior art, so as to solve the problems of low working efficiency, complex structure and the like caused by inconvenient installation and disassembly when a potential safety hazard occurs in the online monitoring device for an arrester.

Disclosure of Invention

The utility model aims to solve among the prior art arrester on-line monitoring device and dismantle inconveniently and lead to work efficiency low when the potential safety hazard appears in the installation, and the comparatively complicated scheduling problem of structure provides an external direct current arrester on-line monitoring appearance.

Realize the utility model discloses the technical scheme of purpose as follows:

an external DC arrester on-line monitoring appearance includes:

the lightning arrester comprises a base, a detection assembly and an umbrella skirt, wherein the umbrella skirt is arranged above the base, the detection assembly is arranged between the umbrella skirt and the base, and a connecting piece is further arranged at the top of the umbrella skirt;

the monitoring device comprises a monitoring body and a data acquisition assembly, wherein the data acquisition assembly is arranged inside the lightning arrester, the monitoring body is arranged outside the lightning arrester and fixed on the base, and the monitoring body is connected with the data acquisition assembly through a connecting wire.

Furthermore, the detection assembly comprises a valve plate, an elastic piece and a flow guide strip, the flow guide strip is communicated with the elastic piece, the valve plate is arranged below the elastic piece, and the valve plate is fixed on the base.

Furthermore, the data acquisition assembly comprises an aluminum gasket and two electrodes, the two electrodes are respectively arranged on the upper end surface and the lower end surface of the valve plate, and the aluminum gasket is arranged between each electrode and the valve plate.

Furthermore, the base is provided with a fixed seat protruding outwards, and the monitoring body is fixed on the fixed seat.

Furthermore, the monitoring device also comprises a mounting bracket, the cross section of the mounting bracket is of an L-shaped structure, and the monitoring body is fixed on the fixed seat through the mounting bracket.

Furthermore, the monitoring body comprises a shell, a battery and a circuit board, wherein the battery and the circuit board are arranged in the shell, the battery supplies power to the circuit board, and the circuit board is connected with the electrodes through connecting wires.

Furthermore, still be provided with first fixed plate, spliced pole and second fixed plate in the casing, the battery is fixed in on the first fixed plate, the circuit board is fixed in on the second fixed plate, pass through spliced pole fixed connection between first fixed plate and the second fixed plate.

Furthermore, the outside of the detection component is surrounded by a sealed shell, aerial insertion elbows are arranged on the shell and the sealed shell, and two ends of the connecting wire respectively penetrate through the aerial insertion elbows on the shell and the sealed shell and are electrically connected with the monitoring body and the detection component.

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

(1) the utility model discloses an external direct current arrester on-line monitoring appearance, through at arrester internally mounted data acquisition subassembly, the leakage current of the inside zinc oxide resistance of arrester will detect under normal condition, the result that rethread monitoring devices's monitoring body will detect and detect the number of times record down, make things convenient for the staff in time to the maintenance of arrester and the understanding of life, it is external with monitoring facilities, can dismantle or install at any time when the potential safety hazard appears, and its simple structure, the installation is nimble, convenient to use and popularization.

(2) The utility model discloses an external direct current arrester on-line monitoring appearance sets up the data acquisition subassembly in the inside zinc oxide resistance valve block department of arrester, detects the valve block through upper and lower electrode pair, can be with increase area of contact, the leakage current of measurement zinc oxide resistance valve block that can be accurate again, and current resolution is high.

Drawings

Fig. 1 is a schematic structural view of an external dc arrester on-line monitor of the utility model;

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

FIG. 3 is a schematic view of the internal structure of the on-line monitor of the present invention;

wherein, 1, monitoring device; 101. a first fixing plate; 102. a battery; 103. connecting columns; 104. a second fixing plate; 105. a circuit board; 2. a fixed seat; 3. a base; 4. a detection component; 5. an umbrella skirt; 6. aerial plug elbows; 7. an upper electrode; 8. an aluminum gasket; 9. a valve plate; 10. a lower electrode; 11. a connecting wire; 12. and (7) mounting a bracket.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

As shown in fig. 1, the external dc arrester on-line monitor of this embodiment includes: the lightning arrester comprises a base 3, a detection assembly 4 and an umbrella skirt 5, wherein the umbrella skirt 5 is arranged above the base 3, the detection assembly 4 is arranged between the umbrella skirt 5 and the base 3, and a connecting piece is also arranged at the top of the umbrella skirt 5; monitoring devices 1, monitoring devices 1 include monitoring body and data acquisition subassembly, and the data acquisition subassembly sets up inside the arrester, and the monitoring body sets up in the arrester outside, and is fixed in on base 3, and the monitoring body passes through connecting wire 11 and is connected with the data acquisition subassembly.

Compare with prior art, the arrester on-line monitoring appearance of this scheme is external with monitoring devices 1, through at arrester internally mounted data acquisition subassembly, to the leakage current of the inside zinc oxide resistance of arrester under the normal condition will detect, the result that rethread monitoring devices 1's monitoring body will detect and the number of times record get off, make things convenient for the staff in time to the maintenance of arrester and the understanding of life, it is external with monitoring devices, can dismantle at any time or install when the potential safety hazard appears, and its simple structure, the installation is nimble, convenient to use and popularization.

As a further optimization of the scheme, as shown in fig. 2, the detection assembly 4 includes a valve sheet 9, an elastic member and a flow guide strip, the flow guide strip conducts the elastic member, the valve sheet 9 is disposed below the elastic member, and the valve sheet 9 is fixed on the base 3. When overvoltage passes through, the overvoltage is transmitted to the valve plate 9 through the elastic piece through the flow guide strip, then the overcurrent is grounded, the overvoltage is released, and the safe use of the power distribution equipment is ensured, wherein the elastic piece not only has a conductive function, but also plays a buffering role. Among them, the elastic member is preferably a spring.

The data acquisition subassembly includes aluminium gasket 8 and two electrodes, and two electrodes set up respectively in the up end and the lower terminal surface of valve block, and all are provided with aluminium gasket 8 between every electrode and the valve block 9. The two electrodes are respectively an upper electrode 7 and a lower electrode 10, the upper electrode 7 and the lower electrode 10 are respectively arranged on the upper end surface and the lower end surface of the valve plate 9, and aluminum gaskets 8 are respectively arranged between the upper electrode 7 and the upper end surface and between the lower electrode 10 and the lower end surface.

The data acquisition assembly is used for monitoring leakage current generated in a zinc oxide resistor in the lightning arrester and acquiring data. Because the zinc oxide resistor has excellent linear volt-ampere characteristics, under normal working voltage, only hundreds of microamperes of current pass through the resistor, when overvoltage invades, the current flowing through the resistor disc is rapidly increased, the amplitude of the overvoltage is limited, the overvoltage energy is released, and then the zinc oxide resistor returns to a high-resistance state to ensure the normal work of a power system. The leakage current of the zinc oxide resistor under normal conditions needs to be detected when the normal and safe operation of the arrester is required to be ensured, so that a data acquisition assembly is arranged in the arrester, upper and lower electrodes are arranged on the upper and lower end faces of a valve plate 9 made of zinc oxide, and the acquired leakage current information is transmitted to a monitoring body through a connecting wire 11 (namely a lead); in addition, set up aluminium gasket 8 between electrode and valve block 9, can play electrically conductive effect and can prevent the mutual wearing and tearing between electrode and the valve block 9, long-term use can ensure measuring accuracy.

As a further optimization of the scheme, with reference to fig. 3, the monitoring body includes a housing, a battery and a circuit board 105, the battery 102 and the circuit board 105 are disposed in the housing, the battery 102 supplies power to the circuit board 105, the circuit board 105 is connected with the electrodes through the connecting wires 11, and the battery 102 is electrically connected with the circuit board 105.

The casing is also internally provided with a first fixing plate 101, a connecting column 103 and a second fixing plate 104, the battery 102 is fixed on the first fixing plate 101, the circuit board 105 is fixed on the second fixing plate 104, and the first fixing plate 101 and the second fixing plate 104 are fixedly connected through the connecting column 103.

Wherein, be fixed in the casing with first fixed plate 101 on, then be fixed in first fixed plate 101 with battery 102 on, rethread spliced pole 103 is with first fixed plate 101 and second fixed plate 104 fixed connection, spliced pole 103 sets up on four angles of first fixed plate 101 and second fixed plate 104, and finally, be fixed in second fixed plate 104 with circuit board 105 again on, in order not to influence the normal work of circuit board 105, also be provided with spliced pole 103 on circuit board 105 edge, fix through spliced pole 103 and second fixed plate 104. So fixed, can guarantee when vibration or foreign object striking, each components and parts of monitoring body inside are not influenced, reduce the emergence probability of trouble, increase life.

Example 2

Compare in embodiment 1, the external direct current arrester on-line monitoring appearance of this embodiment, further, base 3 has outside convex fixing base 2, and the monitoring body is fixed in on fixing base 2, still includes installing support 12, and the cross section of installing support 12 is "L" shape structure, and the monitoring body is fixed in on fixing base 2 through installing support 12.

Specifically, the monitoring body is of a three-dimensional structure, and two vertical edges of the mounting bracket 12 of the "L" shaped structure are respectively fixed on the fixing base 2 and the monitoring body by bolts.

In the in-service use, fix the connection with connecting piece distribution equipment, all fix through the bolt between base 3, determine module 4 and the full skirt 5, wherein, base 3 designs for the triangle structure, and fixing base 2 can install and set up in arbitrary edge of base 3, then designs correspondingly between monitoring devices 1 and the inside connection of arrester, is applicable to direct current arrester for the track traffic.

Furthermore, the outer side of the detection component 4 is surrounded by a sealed shell, the aerial insertion elbow 6 is arranged on each of the shell and the sealed shell, and two ends of the connecting wire 11 respectively penetrate through the aerial insertion elbow 6 on each of the shell and the sealed shell and are electrically connected with the monitoring body and the detection component 4.

Specifically, as a further explanation of the present solution, aviation plugs are respectively installed on the housing of the monitoring body and the sealing shell of the detecting component 4, the aviation plugs are respectively installed with aviation plug elbows 6, both ends of the connecting wire 11 are respectively connected with the monitoring body and the detecting component 4, then both ends of the connecting wire 11 respectively penetrate through the housing and the aviation plug elbows 6 on the sealing shell, and the circuit board 105 and the electrodes are electrically connected. Through setting up aviation plug elbow 6, guaranteed that the connecting wire 11 that is located monitoring body and detecting component 4 department is difficult for taking place to buckle, increase life.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an external direct current arrester on-line monitoring appearance which characterized in that includes:

the lightning arrester comprises a base (3), a detection assembly (4) and an umbrella skirt (5), wherein the umbrella skirt (5) is arranged above the base (3), the detection assembly (4) is arranged between the umbrella skirt (5) and the base (3), and a connecting piece is further arranged at the top of the umbrella skirt (5);

monitoring devices (1), monitoring devices (1) are including monitoring body and data acquisition subassembly, the data acquisition subassembly set up in inside the arrester, the monitoring body set up in the arrester is outside, and be fixed in on base (3), the monitoring body pass through connecting wire (11) with the data acquisition subassembly is connected.

2. The external online monitor for the direct current arrester as claimed in claim 1, wherein the detection assembly (4) comprises a valve plate (9), an elastic member and a flow guide strip, the flow guide strip conducts the elastic member, the valve plate (9) is arranged below the elastic member, and the valve plate (9) is fixed on the base (3).

3. The external online monitor for the direct current arrester as claimed in claim 2, wherein the data acquisition assembly comprises an aluminum gasket (8) and two electrodes, the two electrodes are respectively arranged on the upper end surface and the lower end surface of the valve plate (9), and the aluminum gasket (8) is arranged between each electrode and the valve plate (9).

4. The external on-line monitoring instrument for the direct current arrester as claimed in claim 1, wherein the base (3) is provided with a fixing seat (2) protruding outwards, and the monitoring body is fixed on the fixing seat (2).

5. The external online monitor for the direct current arrester as claimed in claim 4, further comprising a mounting bracket (12), wherein the cross section of the mounting bracket (12) is of an L-shaped structure, and the monitoring body is fixed on the fixing base (2) through the mounting bracket (12).

6. The external online monitor for the direct current arrester as claimed in claim 3, wherein the monitoring body comprises a casing, a battery (102) and a circuit board (105), the battery (102) and the circuit board (105) are arranged in the casing, the battery (102) supplies power to the circuit board (105), and the circuit board (105) is connected with the electrodes through a connecting wire (11).

7. The external online monitor for the direct current arrester as claimed in claim 6, wherein a first fixing plate (101), a connecting column (103) and a second fixing plate (104) are further arranged in the housing;

the battery (102) is fixed on the first fixing plate (101), the circuit board (105) is fixed on the second fixing plate (104), and the first fixing plate (101) and the second fixing plate (104) are fixedly connected through a connecting column (103).

8. The external online monitor for the direct current arrester as claimed in claim 7, wherein the outside of the detecting assembly (4) is surrounded by a sealed housing, the housing and the sealed housing are both provided with aerial insertion elbows (6), and two ends of the connecting wire (11) respectively penetrate through the aerial insertion elbows (6) on the housing and the sealed housing and are electrically connected with the monitoring body and the detecting assembly (4).