CN214895718U - Zero sequence current on-line monitoring device - Google Patents

Zero sequence current on-line monitoring device Download PDF

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Publication number
CN214895718U
CN214895718U CN202120587734.XU CN202120587734U CN214895718U CN 214895718 U CN214895718 U CN 214895718U CN 202120587734 U CN202120587734 U CN 202120587734U CN 214895718 U CN214895718 U CN 214895718U
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China
Prior art keywords
sequence current
protective shell
monitoring device
audible
zero sequence
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CN202120587734.XU
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Chinese (zh)
Inventor
徐加增
徐学峰
司亚楠
董汉林
侯海波
姚树汾
宋辉
陈曦
贾存锋
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Shandong Hangze Electric Co ltd
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Shandong Hangze Electric Co ltd
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Abstract

The utility model discloses a zero sequence current on-line monitoring device relates to current monitoring technical field. The utility model discloses a base, mounting panel, protecting crust and latch device, the base both ends are provided with the mounting panel, and surface mounting has the protecting crust on the base, and protecting crust upper surface week side is provided with fastening bolt, and the protecting crust is connected with the base through fastening bolt. The utility model discloses a circuit breaker, audible-visual annunciator and camera structure, the condition to appearing zero sequence current that can be timely reacts, avoids the circuit to damage, and timely warning simultaneously passes through the camera and conveys, in time changes and maintains, through the latch device, makes things convenient for the change and the maintenance of audible-visual annunciator, current transformer and circuit breaker, reduces operating personnel's operating time, improves its work efficiency.

Description

Zero sequence current on-line monitoring device
Technical Field
The utility model belongs to the technical field of the current monitoring, especially, relate to a zero sequence current on-line monitoring device.
Background
When an electric shock or electric leakage fault occurs in the circuit, leakage current flows through the loop, the sum of three-phase current vectors passing through the mutual inductor is unequal to zero, and the sum of phasors is as follows: and Ia + Ib + Ic is I (leakage current, namely zero sequence current), so that an induced current exists in a secondary coil of the mutual inductor, the induced current is added to an electronic amplifying circuit of the detection part and is compared with a preset action current value of the protection area device, if the induced current is larger than the action current, the sensitive relay is actuated to act on an executing element to trip, the mutual inductor connected with the current inductor is called a zero sequence current mutual inductor, the sum of the three-phase current is not equal to zero, and the generated current is the zero sequence current.
The existing zero sequence current monitoring device is difficult to make quick and accurate response, the time is too long, the circuit is easy to damage, and disasters such as fire disasters are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an online monitoring device of zero sequence current, through circuit breaker, audible-visual annunciator and camera structure, can be timely to the condition of zero sequence current appearing make a response, avoid the circuit to damage, timely warning simultaneously conveys through the camera, in time change and maintenance, through latch device, make things convenient for audible-visual annunciator, the change and the maintenance of current transformer and circuit breaker, reduce operating personnel's operating time, improve its work efficiency, solve current function singleness and the slow problem of reaction.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a zero sequence current on-line monitoring device, which comprises a base, a mounting plate, a protective shell and a clamping device, wherein the mounting plate is arranged at two ends of the base;
the utility model discloses a protection shell, audible-visual annunciator, current transformer, audible-visual annunciator and circuit breaker, the inside two relative surfaces of protection shell all are provided with a plurality of latch devices, audible-visual annunciator is installed to the inside bottom surface of protection shell, current transformer is installed to audible-visual annunciator one side, current transformer installs the circuit breaker in one side, current transformer, audible-visual annunciator and circuit breaker respectively with circuit between electric connection, can be timely to the condition of zero sequence current of appearing react, avoid the circuit to damage.
Further, the camera is installed to the inside one end of protecting crust, conveys through the camera, in time changes and maintains, audible-visual annunciator, current transformer and circuit breaker double-phase are to the surface respectively with latch device between mutually supporting, make things convenient for the change and the maintenance of audible-visual annunciator, current transformer and circuit breaker, reduce operating personnel's operating time, improve its work efficiency.
Furthermore, a plurality of mounting holes are formed in one surface of the mounting plate, the mounting plate is connected with external equipment through the mounting holes, and the equipment is convenient to mount and fix.
Further, the protective housing upper surface is provided with a plurality of radiating grooves, protective housing one side is provided with a plurality of inputs, the protective housing opposite side is provided with a plurality of outputs.
Further, latch device includes spout, slide bar, slide, card post and reset spring, the spout sets up inside the protecting crust, spout internally mounted has two slide bars.
Further, the slide has been inlayed to slide bar week side cover, a slide surface mounting has the card post, install reset spring between another surface of slide and the inside bottom surface of spout, reset spring twines in slide bar week side.
The utility model discloses following beneficial effect has:
1. the utility model discloses a circuit breaker, audible-visual annunciator and camera structure, the condition to appearing zero sequence current that can be timely reacts, avoids the circuit to damage, and timely warning simultaneously conveys through the camera, in time changes and maintains.
2. The utility model discloses a latch device makes things convenient for the change and the maintenance of audible-visual annunciator, current transformer and circuit breaker, reduces operating personnel's operating time, improves its work efficiency.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an online zero-sequence current monitoring device of the present invention;
fig. 2 is a schematic diagram of a rear view structure of an online zero-sequence current monitoring device of the present invention;
fig. 3 is a schematic view of a top view structure of the zero sequence current online monitoring device of the present invention;
FIG. 4 is a schematic view of the internal structure of the middle protective shell according to the present invention;
fig. 5 is a schematic structural view of the middle latch device of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a base; 2. mounting a plate; 3. mounting holes; 4. a protective shell; 5. fastening a bolt; 6. an input end; 7. an output end; 8. a heat sink; 9. a camera; 10. an audible and visual alarm; 11. a current transformer; 12. a circuit breaker; 13. a clamping device; 14. a chute; 15. a slide bar; 16. a slide plate; 17. clamping the column; 18. a return spring.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-5, the utility model relates to a zero sequence current on-line monitoring device, which comprises a base 1, a mounting plate 2, a protective shell 4 and a clamping device 13, wherein the mounting plate 2 is arranged at two ends of the base 1, the protective shell 4 is arranged on the upper surface of the base 1, a fastening bolt 5 is arranged around the upper surface of the protective shell 4, and the protective shell 4 is connected with the base 1 through the fastening bolt 5;
a plurality of clamping devices 13 are arranged on two opposite surfaces inside the protective shell 4, the audible and visual alarm 10 is installed on the bottom surface inside the protective shell 4, the current transformer 11 is installed on one side of the audible and visual alarm 10, the circuit breaker 12 is installed on one side of the current transformer 11, the audible and visual alarm 10 and the circuit breaker 12 are electrically connected with the circuit respectively, the condition of zero sequence current can be timely responded, and circuit damage is avoided.
Camera 9 is installed to the inside one end of protecting crust 4, conveys through camera 9, in time changes and maintains, and audible-visual annunciator 10, current transformer 11 and circuit breaker 12 are double-phase to the surface respectively with latch device 13 between mutually supporting, make things convenient for audible-visual annunciator 10, current transformer 11 and circuit breaker 12's change and maintenance, reduce operating personnel's operating time, improve its work efficiency.
A plurality of mounting holes 3 are formed in the surface of the mounting plate 2, and the mounting plate 2 is connected with external equipment through the mounting holes 3, so that the equipment is convenient to mount and fix.
The upper surface of protective housing 4 is provided with a plurality of radiating grooves 8, and protective housing 4 one side is provided with a plurality of inputs 6, and protective housing 4 opposite side is provided with a plurality of outputs 7.
The clamping device 13 comprises a sliding chute 14, a sliding rod 15, a sliding plate 16, a clamping column 17 and a return spring 18, wherein the sliding chute 14 is arranged inside the protective shell 4, and the sliding chute 14 is internally provided with the two sliding rods 15.
The side surface of the periphery of the sliding rod 15 is sleeved with a sliding plate 16, a clamping column 17 is arranged on one surface of the sliding plate 16, a return spring 18 is arranged between the other surface of the sliding plate 16 and the bottom surface of the inside of the sliding chute 14, and the return spring 18 is wound on the side surface of the periphery of the sliding rod 15.
Referring to fig. 1-5, the utility model relates to a zero sequence current on-line monitoring device, which has the following usage: through circuit breaker 12, audible-visual annunciator 10 and camera 9 structure, can be timely to the condition of zero sequence current appearing react, avoid the circuit to damage, timely warning simultaneously conveys through camera 9, in time changes and maintains, through latch device 13, makes things convenient for audible-visual annunciator 10, current transformer 11 and circuit breaker 12's change and maintenance, reduces operating personnel's operating time, improves its work efficiency.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a zero sequence current on-line monitoring device, includes base (1), mounting panel (2), protecting crust (4) and latch device (13), its characterized in that: mounting plates (2) are arranged at two ends of the base (1), a protective shell (4) is mounted on the upper surface of the base (1), fastening bolts (5) are arranged on the periphery of the upper surface of the protective shell (4), and the protective shell (4) is connected with the base (1) through the fastening bolts (5);
the protection casing (4) inside two relative surfaces all are provided with a plurality of latch devices (13), audible-visual annunciator (10) are installed to the inside bottom surface of protection casing (4), current transformer (11) are installed to audible-visual annunciator (10) one side, circuit breaker (12) are installed to current transformer (11) one side, current transformer (11), audible-visual annunciator (10) and circuit breaker (12) respectively with between the circuit electric connection.
2. The zero sequence current online monitoring device according to claim 1, wherein a camera (9) is installed at one end inside the protective shell (4), and two opposite surfaces of the audible and visual alarm (10), the current transformer (11) and the circuit breaker (12) are respectively matched with the clamping device (13).
3. The zero sequence current online monitoring device according to claim 1, wherein a plurality of mounting holes (3) are formed in one surface of the mounting plate (2), and the mounting plate (2) is connected with external equipment through the mounting holes (3).
4. The zero sequence current online monitoring device according to claim 1, wherein the upper surface of the protective shell (4) is provided with a plurality of heat dissipation slots (8), one side of the protective shell (4) is provided with a plurality of input ends (6), and the other side of the protective shell (4) is provided with a plurality of output ends (7).
5. The zero-sequence current online monitoring device according to claim 1, wherein the clamping device (13) comprises a sliding groove (14), sliding rods (15), a sliding plate (16), a clamping column (17) and a return spring (18), the sliding groove (14) is arranged inside the protective shell (4), and two sliding rods (15) are arranged inside the sliding groove (14).
6. The zero-sequence current online monitoring device according to claim 5, wherein a sliding plate (16) is sleeved on the peripheral side surface of the sliding rod (15), a clamping column (17) is installed on one surface of the sliding plate (16), a return spring (18) is installed between the other surface of the sliding plate (16) and the inner bottom surface of the sliding chute (14), and the return spring (18) is wound on the peripheral side surface of the sliding rod (15).
CN202120587734.XU 2021-03-23 2021-03-23 Zero sequence current on-line monitoring device Active CN214895718U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120587734.XU CN214895718U (en) 2021-03-23 2021-03-23 Zero sequence current on-line monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120587734.XU CN214895718U (en) 2021-03-23 2021-03-23 Zero sequence current on-line monitoring device

Publications (1)

Publication Number Publication Date
CN214895718U true CN214895718U (en) 2021-11-26

Family

ID=79037833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120587734.XU Active CN214895718U (en) 2021-03-23 2021-03-23 Zero sequence current on-line monitoring device

Country Status (1)

Country Link
CN (1) CN214895718U (en)

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