CN209993903U - Medium-voltage switchgear of dual protection - Google Patents
Medium-voltage switchgear of dual protection Download PDFInfo
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- CN209993903U CN209993903U CN201921108609.5U CN201921108609U CN209993903U CN 209993903 U CN209993903 U CN 209993903U CN 201921108609 U CN201921108609 U CN 201921108609U CN 209993903 U CN209993903 U CN 209993903U
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Abstract
The utility model belongs to the technical field of medium voltage switchgear, especially, be a medium voltage switchgear of dual protection, including outer cabinet, interior cabinet and fire control glass shower nozzle, outer cabinet with interior cabinet is nested rectangle box of each other, outer cabinet with the insulation support column who arranges through the equipartition between the interior cabinet is connected, the outside of the opening part of interior cabinet is connected with ring seal board, and interior cabinet passes through ring seal board sealing connection in the inner wall of outer cabinet, outer cabinet pass through ring seal board with interior cabinet constitutes sealed isolation chamber, and it has gaseous fire extinguishing agent to fill in the sealed isolation chamber, and the corner gomphosis of interior cabinet inner chamber is equipped with the fire control glass shower nozzle. The utility model discloses an outer cabinet, interior cabinet and annular seal board constitute sealed isolation chamber, fill gaseous state fire extinguishing agent in the sealed chamber, install fire control glass shower nozzle in the interior cabinet, alcohol or mercury in the fire control glass shower nozzle break through the glass container when taking place the condition of a fire, will seal isolation chamber and interior cabinet and switch on, emit gaseous state fire extinguishing agent, put out a fire the operation to the ignition.
Description
Technical Field
The utility model relates to a medium voltage switchgear technical field specifically is a medium voltage switchgear of dual protection.
Background
The medium-voltage switch cabinet is used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and plays roles of on-off, control or protection and the like, the medium-voltage switch cabinet is used as an electric appliance product with a voltage grade of 220V to 3.6kV, a medium-voltage isolating switch, a grounding switch, a medium-voltage load switch, a medium-voltage automatic coincidence and sectionalizer, a medium-voltage operating mechanism, a medium-voltage explosion-proof power distribution device, a medium-voltage switch cabinet and the like, and the medium-voltage switch cabinet is divided into a semi-closed medium-voltage switch cabinet, a box-type medium-voltage switch cabinet, a spaced medium-voltage switch cabinet and an armored medium-voltage switch cabinet according to the structure of the medium-voltage switch cabinet, and can be divided into an air-insulated medium-voltage switch cabinet, a composite insulated medium-voltage switch cabinet and an.
The prior medium-voltage switch cabinet has the following problems:
1. present medium-voltage switchgear can not automatic put out a fire when taking place the condition of a fire, can only receive the condition of a fire command by the manual work and open the cabinet body and put out a fire after, the electrical components in the cabinet have burnt almost always this moment, cause huge economic loss.
2. At present, most of medium-voltage switch cabinets are installed in closed or semi-closed areas, such as high-voltage electric wells, and when the medium-voltage switch cabinets are manually opened or closed, the medium-voltage switch cabinets can be switched on and off only by stretching a body into the medium-voltage switch cabinets, so that great potential safety hazards are caused to operators.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a medium voltage switchgear of dual protection has solved among the prior art medium voltage switchgear and can not be automatic put out a fire and cause the problem of very big potential safety hazard to operating personnel when taking place the condition of a fire.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a double-protection medium-voltage switch cabinet comprises an outer cabinet, an inner cabinet and a fire-fighting glass spray head, wherein the outer cabinet and the inner cabinet are mutually nested rectangular box bodies, the outer cabinet and the inner cabinet are connected through uniformly distributed insulating support columns, the outer side of the opening of the inner cabinet is connected with an annular sealing plate, the inner cabinet is connected with the inner wall of the outer cabinet in a sealing way through the annular sealing plate, the outer cabinet and the inner cabinet form a sealed isolation cavity through the annular sealing plate, the sealed isolation cavity is filled with gaseous extinguishing agent, the fire-fighting glass spray head is embedded in the corner of the inner cavity of the inner cabinet, the fire-fighting glass spray head is communicated and connected with the sealed isolation cavity and the inner cavity of the inner cabinet, the bottom end of the inner wall of the inner cabinet is connected with an electrical appliance mounting plate through a bolt, the front surface of the electric appliance mounting plate is provided with a medium-voltage circuit breaker, and the front surface of the medium-voltage circuit breaker is provided with a switch operating lever.
As a preferred technical scheme of the utility model, the top surface fixedly connected with guide rail of interior cabinet inner chamber, movable gomphosis is connected with the slider on the guide rail, the bottom of slider is connected with the lever through telescopic bracket, the one end of lever is equipped with the handle, the other end of lever is equipped with the U-shaped shift fork, the inside groove activity gomphosis of U-shaped shift fork the switch lever.
As an optimal technical scheme of the utility model, outer cabinet with the avris of interior cabinet all has the door that opens and shuts through the hinge mounting, explosion-proof glass window is installed to the gomphosis on the door that opens and shuts.
As an optimal technical scheme of the utility model, the both sides through connection on outer cabinet top has the wire to advance pipe and wire exit tube, the wire advance the pipe and the wire exit tube with outer cabinet with the handing-over department of interior cabinet is sealing connection.
As an optimal technical scheme of the utility model, the avris of outer cabinet is equipped with aerifys the interface, the top turn-on connection of outer cabinet has the barometer.
As an optimized technical proposal of the utility model, the inner cabinet is laminated with a flame-retardant layer, and the gaseous fire extinguishing agent is heptafluoropropane or carbon dioxide or pure nitrogen.
(III) advantageous effects
Compared with the prior art, the utility model provides a medium voltage switch cabinet of dual protection possesses following beneficial effect:
1. this medium-voltage switchgear of dual protection constitutes sealed isolation chamber through outer cabinet, interior cabinet and annular seal board, fills gaseous state fire extinguishing agent in the sealed chamber, installs fire control glass shower nozzle in the interior cabinet, and alcohol or mercury in the fire control glass shower nozzle break through the glass container when taking place the condition of a fire break through sealed isolation chamber and interior cabinet switch on, emit gaseous state fire extinguishing agent, put out a fire to the ignition operation.
2. This medium voltage switchgear of dual protection sets up the guide rail at interior cabinet top, gomphosis slider on the guide rail, drives telescopic bracket and lever nimble removal in the inner chamber of interior cabinet by the slider, and U-shaped shift fork gomphosis on the lever is opened or is shut off to medium voltage circuit breaker with toggle switch control lever to carry out independent opening or closing to each circuit breaker's operation position, not only efficient, and safe and reliable.
Drawings
FIG. 1 is a schematic view of the subjective structure of the present invention;
FIG. 2 is a schematic view of a half-section structure of the present invention;
fig. 3 is a schematic front sectional view of the present invention.
In the figure: 1. an outer cabinet; 2. an inner cabinet; 3. insulating support columns; 4. an annular seal plate; 5. sealing the isolation cavity; 6. a gaseous extinguishing agent; 7. a fire-fighting glass nozzle; 8. an electrical appliance mounting plate; 9. a medium voltage circuit breaker; 10. a switch lever; 11. a guide rail; 12. a slider; 13. a telescopic bracket; 14. a lever; 15. a handle; 16. a U-shaped shifting fork; 17. opening and closing the door; 18. an explosion-proof glass window; 19. leading a lead into a tube; 20. a lead outlet pipe; 21. an inflation interface; 22. a barometer.
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.
Examples
Referring to fig. 1-3, the present invention provides the following technical solutions: a double-protection medium-voltage switch cabinet comprises an outer cabinet 1, interior cabinet 2 and fire control glass shower nozzle 7, outer cabinet 1 and interior cabinet 2 are nested rectangle box each other, connect through the insulation support column 3 that the equipartition was arranged between outer cabinet 1 and the interior cabinet 2, the outside of the opening part of interior cabinet 2 is connected with ring seal board 4, interior cabinet 2 passes through ring seal board 4 sealing connection in the inner wall of outer cabinet 1, outer cabinet 1 passes through ring seal board 4 and constitutes sealed isolation chamber 5 with interior cabinet 2, it has gaseous fire extinguishing agent 6 to fill in the sealed isolation chamber 5, the corner gomphosis of interior 2 inner chambers of cabinet is equipped with fire control glass shower nozzle 7, fire control glass shower nozzle 7 turn-on connection seals isolation chamber 5 and the inner chamber of interior cabinet 2, there is electrical apparatus mounting panel 8 bottom of interior 2 inner walls through bolted connection, medium voltage circuit breaker 9 is installed in the front of electrical apparatus mounting panel 8, the front of medium voltage circuit breaker 9 is equipped with switch.
In this embodiment, when the temperature of the inner cabinet 2 is raised to exceed the critical operating point of the fire-fighting glass nozzle 7 due to fire or other reasons, the alcohol or mercury in the fire-fighting glass nozzle 7 breaks through the glass container to connect the sealed isolation chamber 5 with the inner chamber of the inner cabinet 2, and at this time, the gaseous extinguishing agent 6 stored in the sealed isolation chamber 5 will be sprayed into the inner chamber of the inner cabinet 2 from the fire-fighting glass nozzle 7 to extinguish the fire.
Specifically, a guide rail 11 is fixedly connected to the top surface of the inner cavity of the inner cabinet 2, a slide block 12 is movably embedded and connected to the guide rail 11, the bottom end of the slide block 12 is connected with a lever 14 through a telescopic support 13, a handle 15 is arranged at one end of the lever 14, a U-shaped shifting fork 16 is arranged at the other end of the lever 14, and an inner groove of the U-shaped shifting fork 16 is movably embedded with the switch operating rod 10.
In this embodiment, the switch lever 10 is used for manually opening or closing the medium voltage breaker 9, when the main body of the present invention is located in an area where manual contact is difficult or dangerous around, it is difficult to manually open or close the medium voltage breaker 9 through the switch lever 10, or the safety of a worker is affected when the opening or closing operation is performed, at this time, the U-shaped shift fork 16 can be embedded in the side of the switch lever 10, the handle 15 is pulled through the lever 14 by pulling the handle 15, the U-shaped shift fork 16 pulls the switch lever 10 to open or close the medium voltage breaker 9, because a plurality of breakers are installed in one cabinet body, the top surface of the inner cavity of the inner cabinet 2 is connected with the guide rail 11, the slider 12 is embedded in the guide rail 11, the slider 12 drives the telescopic bracket 13 and the lever 14 to flexibly move in the inner cavity of the inner cabinet 2, the operation part of each circuit breaker is conveniently and independently opened or closed, so that the efficiency is high, and the circuit breaker is safe and reliable.
Specifically, the sides of the outer cabinet 1 and the inner cabinet 2 are respectively provided with an opening and closing door 17 through hinges, and an explosion-proof glass window 18 is embedded and installed on the opening and closing door 17.
In this embodiment, the opening and closing door 17 is used for opening the outer cabinet 1 and the inner cabinet 2, and the explosion-proof glass window 18 is used for observing the inner cavity of the inner cabinet 2 and the working state of the medium voltage circuit breaker 9 in the closed state of the opening and closing door 17.
Specifically, both sides of the top end of the outer cabinet 1 are connected with a wire inlet pipe 19 and a wire outlet pipe 20 in a penetrating manner, and the joints of the wire inlet pipe 19 and the wire outlet pipe 20 with the outer cabinet 1 and the inner cabinet 2 are in sealing connection.
In this embodiment, the wire inlet pipe 19 is used for an input wire to be connected into a power grid, the wire outlet pipe 20 is used for an output wire to be connected into an electric appliance, and the joint of the wire outlet pipe 20 and the outer cabinet 1 and the inner cabinet 2 is in sealing connection, so that the gaseous fire extinguishing agent 6 in the sealed isolation cavity 5 is prevented from leaking outside.
Specifically, an inflation interface 21 is arranged on the side of the outer cabinet 1, and a barometer 22 is conductively connected to the top end of the outer cabinet 1.
In this embodiment, the inflation port 21 is used for filling or supplementing the gaseous extinguishing agent 6 into the sealed isolation cavity 5, the barometer 22 is used for detecting the pressure and the content of the gaseous extinguishing agent 6 in the sealed isolation cavity 5, and when the pressure and the content of the gaseous extinguishing agent 6 in the sealed isolation cavity 5 are insufficient, or after the fire-fighting glass nozzle 7 is used and replaced again, the inflation port 21 is used for supplementing the gaseous extinguishing agent 6 into the sealed isolation cavity 5, so that the fire-fighting and protection functions of the medium-pressure disconnecting switch 9 in the internal cabinet 2 can be continuously and stably maintained.
Specifically, a flame-retardant layer is attached to the inner cabinet 2, and the gaseous extinguishing agent 6 is heptafluoropropane or carbon dioxide or pure nitrogen.
In the embodiment, the three gases have good fire extinguishing performance, wherein heptafluoropropane is a clean gas mainly used for chemical fire extinguishing and has a physical fire extinguishing effect, does not pollute a protected object, does not damage properties and precision facilities, can reliably extinguish B, C-class fires and electric fires at a low fire extinguishing concentration, has a small storage space, a high critical temperature and a low critical pressure, does not contain particles or oily residues after release, does not damage an atmospheric ozone layer, and meets the requirement of environmental protection.
The gaseous fire extinguishing agent 6, the fire-fighting glass nozzle 7 and the medium-voltage circuit breaker switch are known technologies which are already disclosed and widely applied to daily life.
The utility model discloses a theory of operation and use flow: when the temperature of the inner cabinet 2 is raised to exceed the working critical point of the fire-fighting glass spray head 7 due to fire or other reasons, alcohol or mercury in the fire-fighting glass spray head 7 breaks through the glass container, the sealed isolation cavity 5 is communicated with the inner cavity of the inner cabinet 2, and at the moment, the gaseous fire extinguishing agent 6 stored in the sealed isolation cavity 5 flows into the inner cavity of the inner cabinet 2 from the fire-fighting glass spray head 7 to extinguish a fire point, when the main body of the utility model is in an area which is difficult to be manually contacted or has danger at the periphery, the manual operation is difficult to open or close the medium-pressure disconnecting switch 9 through the switch control lever 10, or the safety of workers is influenced when the operation is opened or closed, the U-shaped shifting fork 16 can be embedded at the side of the switch control lever 10, the handle 15 is pulled, the handle 15 pulls the U-shaped shifting fork 16 through the lever 14, and the U-shaped shifting switch control lever 10 pulls the switch control lever 10 to open or close the medium-pressure disconnecting, because a plurality of circuit-breaking switches are arranged in one cabinet body, the top surface of the inner cavity of the inner cabinet 2 is connected with the guide rail 11, the slide block 12 is embedded on the guide rail 11, the slide block 12 drives the telescopic bracket 13 and the lever 14 to flexibly move in the inner cavity of the inner cabinet 2, so that the operation part of each circuit-breaking switch can be independently opened or closed, the efficiency is high, and the safety and the reliability are high.
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 in the foregoing embodiments, 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 (6)
1. The utility model provides a medium voltage switchgear of dual protection, includes outer cabinet (1), interior cabinet (2) and fire control glass shower nozzle (7), its characterized in that: the outer cabinet (1) and the inner cabinet (2) are rectangular box bodies which are nested with each other, the outer cabinet (1) and the inner cabinet (2) are connected through insulating support columns (3) which are uniformly distributed and arranged, the outer side of an opening of the inner cabinet (2) is connected with an annular sealing plate (4), the inner cabinet (2) is connected to the inner wall of the outer cabinet (1) in a sealing way through the annular sealing plate (4), the outer cabinet (1) and the inner cabinet (2) form a sealing isolation cavity (5) through the annular sealing plate (4), a gaseous fire extinguishing agent (6) is filled in the sealing isolation cavity (5), fire-fighting glass nozzles (7) are embedded in corners of the inner cavity of the inner cabinet (2), the fire-fighting glass nozzles (7) are connected with the sealing isolation cavity (5) and the inner cavity of the inner cabinet (2) in a conduction way, and the bottom end of the inner wall of the inner cabinet (2) is connected with an electrical appliance mounting plate (8), the front surface of the electric appliance mounting plate (8) is provided with a medium-voltage circuit breaker (9), and the front surface of the medium-voltage circuit breaker (9) is provided with a switch operating lever (10).
2. A double-protection medium voltage switchgear, according to claim 1, characterized in that: the top surface fixedly connected with guide rail (11) of interior cabinet (2) inner chamber, movable gomphosis is connected with slider (12) on guide rail (11), the bottom of slider (12) is connected with lever (14) through telescopic bracket (13), the one end of lever (14) is equipped with handle (15), the other end of lever (14) is equipped with U-shaped shift fork (16), the inside groove activity gomphosis of U-shaped shift fork (16) switch lever (10).
3. A double-protection medium voltage switchgear, according to claim 1, characterized in that: the outer cabinet (1) with the avris of interior cabinet (2) all has opening and shutting door (17) through the hinge mounting, explosion-proof glass window (18) are installed to the gomphosis on opening and shutting door (17).
4. A double-protection medium voltage switchgear, according to claim 1, characterized in that: the both sides on outer cabinet (1) top run through and be connected with the wire and advance pipe (19) and wire exit tube (20), the wire advance pipe (19) and wire exit tube (20) with outer cabinet (1) with the handing-over department of interior cabinet (2) is sealing connection.
5. A double-protection medium voltage switchgear, according to claim 1, characterized in that: the avris of outer cabinet (1) is equipped with aerifys interface (21), the top switch on of outer cabinet (1) is connected with barometer (22).
6. A double-protection medium voltage switchgear, according to claim 1, characterized in that: the inner cabinet (2) is attached with a flame-retardant layer, and the gaseous extinguishing agent (6) is heptafluoropropane or carbon dioxide or pure nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108609.5U CN209993903U (en) | 2019-07-15 | 2019-07-15 | Medium-voltage switchgear of dual protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108609.5U CN209993903U (en) | 2019-07-15 | 2019-07-15 | Medium-voltage switchgear of dual protection |
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| Publication Number | Publication Date |
|---|---|
| CN209993903U true CN209993903U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921108609.5U Active CN209993903U (en) | 2019-07-15 | 2019-07-15 | Medium-voltage switchgear of dual protection |
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| CN (1) | CN209993903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398017A (en) * | 2020-10-30 | 2021-02-23 | 赵莉 | Electric power cabinet with monitoring warning pre-alarming function |
| CN114336310A (en) * | 2022-01-07 | 2022-04-12 | 重庆正信电器科技有限公司 | Explosion-proof distribution box |
-
2019
- 2019-07-15 CN CN201921108609.5U patent/CN209993903U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112398017A (en) * | 2020-10-30 | 2021-02-23 | 赵莉 | Electric power cabinet with monitoring warning pre-alarming function |
| CN112398017B (en) * | 2020-10-30 | 2023-08-22 | 国网江苏省电力有限公司滨海县供电分公司 | Electric power cabinet with monitoring, warning and pre-alarming functions |
| CN114336310A (en) * | 2022-01-07 | 2022-04-12 | 重庆正信电器科技有限公司 | Explosion-proof distribution box |
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