CN218783458U

CN218783458U - Environment-friendly gas insulation ring main unit

Info

Publication number: CN218783458U
Application number: CN202222308140.8U
Authority: CN
Inventors: 唐超; 王强; 张红; 王源; 张耀文; 王植
Original assignee: Lianyungang Gangsheng Switch Manufacturing Co ltd
Current assignee: Lianyungang Gangsheng Switch Manufacturing Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-03-31
Anticipated expiration: 2032-08-30

Abstract

The utility model belongs to the technical field of the looped netowrk cabinet, especially, be environmental protection gas insulation looped netowrk cabinet, which comprises a housin, roof and inside wall position department install circuit breaker switch in the casing is located, the inlet wire pipe is installed at circuit breaker switch's up end interval. The utility model discloses a divide the management and control with circuit breaker switch and isolation earthing switch respectively through circuit breaker controller and isolation earthing controller, and install four above-mentioned part amalgamations in same casing, form whole symmetrical seal structure, can use under any harsh environment, even high altitude area, the whole installation space of equipment can also be dwindled simultaneously, and this net cabinet adopts and fills with nitrogen gas, dry air and CO are as the gaseous insulating medium of environment-friendly, carry out good insulation to this inside of net cabinet, can effectively replace traditional SF6 gas, the reliability of insulation has been increased so, simultaneously reduced the gaseous recovery difficulty of SF6 again, and to the problem of environmental impact and destruction.

Description

Environment-friendly gas insulation ring main unit

Technical Field

The utility model relates to a looped netowrk cabinet technical field specifically is environmental protection gas insulation looped netowrk cabinet.

Background

Along with the continuous development of society, the continuous progress of science, the use of insulating looped netowrk cabinet is more extensive, and the looped netowrk cabinet is a set of transmission and distribution electrical equipment, adorns in metal or non-metal insulating cabinet or makes the electrical equipment of assembling compartment looped netowrk power supply unit, and in order to make the inside electric insulation that can carry out of looped netowrk cabinet, generally will pour into insulating gas into the inside of looped netowrk cabinet, and in order to reduce the pollution of insulating gas to the environment, will adopt the insulating gas of environment-friendly, therefore just need an environmental protection gas insulation looped netowrk cabinet.

The SF6 gas is used as a medium in a large part of a gas insulation ring main unit in the current market, although SF6 has excellent insulation performance and cannot age and deteriorate, under the action of electric arc and corona, the SF6 gas can be decomposed to generate low-fluorine compounds, the low-fluorine compounds can cause damage to insulation materials, the low-fluorine compounds are extremely toxic gases and have great harm to human bodies, meanwhile, the SF6 gas is greenhouse gas for limiting emission, and the influence and damage to the environment cannot be ignored due to the difficulty in recycling and long-term use;

therefore, we propose an environmentally friendly gas insulated ring main unit to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an environmental protection gas insulation looped netowrk cabinet has solved the problem that proposes among the above-mentioned background art.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

environmental protection gas insulation looped netowrk cabinet, which comprises a housin, the casing is located interior roof and inside wall position department and installs circuit breaker switch, circuit breaker switch's up end interval installs the inlet wire pipe, install vacuum interrupter under circuit breaker switch, install the circuit breaker controller of switch-on between the inside wall that one side of circuit breaker switch and casing correspond, install isolation earthing switch under circuit breaker switch, isolation earthing switch's one side and be located and install the isolation earthing controller of intercommunication between the circuit breaker controller, isolation earthing switch is equipped with the ground lead of outside drawing forth through surperficial ground connection static contact, the terminal sleeve of looks adaptation has been cup jointed to ground lead on the surface, insert the arrester behind terminal sleeve's surface mounting, terminal sleeve's lower extreme is equipped with the play spool of butt joint, the surface mounting who goes out the spool has zero sequence transformer.

Further, be connected with the isolation frame of looks adaptation between circuit breaker switch and isolation earthing switch's the surface, the isolation frame is fixed between the interior roof and the inside wall of casing.

Furthermore, the inner bottom wall of the shell is fixedly connected with a support frame, and the top of the support frame is fixedly connected with the surface of the lead sleeve.

Furthermore, the support frame is fixedly connected with a positioning frame on one side corresponding to the outlet pipe, and the inside of the positioning frame is fixedly connected with the surface of the outlet pipe.

Furthermore, what isolation earthing switch adopted is the isolation earthing switch of three stations, vacuum interrupter's maximum breaking value is 25KA.

(III) advantageous effects

Compared with the prior art, the utility model provides an environmental protection gas insulation looped netowrk cabinet possesses following beneficial effect:

1. the utility model discloses, through separately managing and controlling breaker switch and isolation earthing switch through breaker controller and isolation earthing controller respectively, and install four above-mentioned parts amalgamation in same casing, form whole symmetrical seal structure, can use under any harsh environment, even high-altitude area, can also reduce the whole installation space of equipment simultaneously, and this net cabinet adopts and fills with nitrogen gas, dry air and CO are as the gaseous insulating medium of environment-friendly, carry out good insulation to this net cabinet inside, can effectively replace traditional SF6 gas, thus the reliability of insulation has been increased, simultaneously reduced the gaseous recovery difficulty of SF6 again, and to the problem of environmental impact and destruction.

2. The utility model discloses, through the vacuum interrupter who designs from crossing circuit breaker below, then be in order to guarantee that vacuum interrupter passes through the good insulating nature of intraductal vacuum, can put out the arc rapidly and suppress the electric current after making medium-high voltage circuit cut-off power supply, avoid accident and unexpected emergence, and insert the arrester after the installation on the pin bushing, mainly used restriction overvoltage is in order to protect electrical equipment, secondly, whether there is the electric leakage condition in the zero sequence transformer of play spool surface mounting can real-time detection circuit, through foretell multiple safety protection, help improving the holistic security performance of equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a housing; 2. a circuit breaker switch; 3. a wire inlet pipe; 4. a vacuum arc-extinguishing chamber; 5. a circuit breaker controller; 6. an isolation grounding switch; 7. an isolated ground controller; 8. a ground lead; 9. a lead wire sleeve; 10. inserting a lightning arrester at the back; 11. a wire outlet pipe; 12. a zero sequence transformer; 13. an isolation frame; 14. a support frame; 15. a positioning frame.

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 efforts all belong to the protection scope of the present invention.

Examples

As shown in fig. 1, the utility model relates to an embodiment provides an environmental protection gas insulation looped netowrk cabinet, including casing 1, casing 1 is located roof and inside wall position department and installs circuit breaker switch 2, inlet wire pipe 3 is installed at circuit breaker switch 2's up end interval, vacuum interrupter 4 is installed under circuit breaker switch 2, install the circuit breaker controller 5 of switch-on between the inside wall that circuit breaker switch 2's one side and casing 1 correspond, circuit breaker switch 2 installs isolation earthing switch 6 under, isolation earthing switch 6's one side and be located circuit breaker controller 5 install the isolation earthing controller 7 of intercommunication between under, isolation earthing switch 6 is equipped with the earthing lead 8 of outwards drawing forth through the earthing static contact on surface, earthing lead 8 cup joints the lead wire sleeve 9 of looks adaptation on the surface, insert arrester 10 behind lead wire sleeve 9's surface mounting, the lower extreme of lead wire sleeve 9 is equipped with the outlet pipe 11 of butt joint, outlet pipe 11's surface mounting has zero sequence mutual-inductor 12, through adopting with the environmental protection type nitrogen gas, dry air and CO are as the gas insulation medium of environment-friendly, mainly according to the insulating performance test research, the environmental protection gas insulation device and the effective gas collection of maintenance work of this gas insulation device that can better, thereby the SF replacement is to the effective gas insulation work of replacement of SF and the effective gas replacement of this SF and the maintenance work of the effective gas replacement of the maintenance of the effective gas insulation device under the SF.

As shown in fig. 1, in some embodiments, an adaptive isolation frame 13 is connected between the outer surfaces of the circuit breaker switch 2 and the isolation ground switch 6, the isolation frame 13 is fixed between the inner top wall and the inner side wall of the housing 1, the circuit breaker controller 5 and the isolation ground controller 7 are respectively and correspondingly switched on and isolated at the corresponding positions of the circuit breaker switch 2 and the isolation ground switch 6 through the isolation frame 13, which is mainly used for enhancing the insulation performance of the circuit breaker switch 2, and meanwhile, the overall structure is symmetrical, and the overall installation space of the device is also reduced.

As shown in fig. 1, in some embodiments, a supporting frame 14 is fixedly connected to the inner bottom wall of the casing 1, and the top of the supporting frame 14 is fixedly connected to the surface of the lead sleeve 9, and the supporting frame 14 is mainly used for fixedly supporting the lead sleeve 9, so as to help improve the stability of the lead sleeve 9 during use.

As shown in fig. 1, in some embodiments, a positioning frame 15 is fixedly connected to one side of the supporting frame 14 corresponding to the wire outlet pipe 11, an inner portion of the positioning frame 15 is fixedly connected to a surface of the wire outlet pipe 11, and the stability of the wire outlet pipe 11 in use is mainly improved by the positioning of the positioning frame 15 on the wire outlet pipe 11.

As shown in fig. 1, in some embodiments, the isolation grounding switch 6 is a three-position isolation grounding switch, the maximum cut-off value of the vacuum arc-extinguishing chamber 4 is 25KA, and the three-position isolation grounding switch is adopted because the switch has the use characteristics of cutting off a load and an isolation circuit and being capable of being grounded, and can meet the use requirements of the ring main unit load switch.

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 described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Environmental protection gas insulation looped netowrk cabinet, including casing (1), its characterized in that: casing (1) is located interior roof and inside wall position department and installs circuit breaker (2), inlet wire pipe (3) are installed at the up end interval of circuit breaker (2), vacuum interrupter (4) are installed to the under of circuit breaker (2), install the circuit breaker controller (5) of switch-on between the inside wall that one side of circuit breaker (2) and casing (1) correspond, isolation earthing switch (6) are installed to the under of circuit breaker (2), isolation earthing switch (7) of intercommunication are installed to one side of isolation earthing switch (6) and be located between the under of circuit breaker controller (5), isolation earthing switch (6) are equipped with outside ground lead (8) of drawing forth through the ground connection static contact on surface, the lead wire sleeve (9) of looks adaptation has cup jointed on the surface of ground lead (8), plug-in ware (10) after the surface mounting of lead wire sleeve (9), the lower extreme of lead wire sleeve (9) is equipped with outlet wire pipe (11) of butt joint, the surface mounting that goes out outlet wire pipe (11) has zero sequence mutual-inductor (12).

2. The ring main unit as claimed in claim 1, wherein: be connected with isolation frame (13) of looks adaptation between the surface of circuit breaker switch (2) and isolation earthing switch (6), isolation frame (13) are fixed between the interior roof and the inside wall of casing (1).

3. The ring main unit as claimed in claim 1, wherein: the inner bottom wall of the shell (1) is fixedly connected with a support frame (14), and the top of the support frame (14) is fixedly connected with the surface of the lead sleeve (9).

4. The environmentally friendly gas insulated ring main unit as claimed in claim 3, wherein: one side fixedly connected with locating rack (15) that support frame (14) are located play spool (11) and correspond, the inside of locating rack (15) is connected with the fixed surface of being qualified for the next round of competitions pipe (11).

5. The ring main unit as claimed in claim 1, wherein: the isolation grounding switch (6) adopts a three-position isolation grounding switch, and the maximum cut-off value of the vacuum arc-extinguishing chamber (4) is 25KA.