CN220341761U - Low-voltage capacitance compensation cabinet - Google Patents
Low-voltage capacitance compensation cabinet Download PDFInfo
- Publication number
- CN220341761U CN220341761U CN202321861257.7U CN202321861257U CN220341761U CN 220341761 U CN220341761 U CN 220341761U CN 202321861257 U CN202321861257 U CN 202321861257U CN 220341761 U CN220341761 U CN 220341761U
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- fixedly connected
- main part
- power switch
- compensation cabinet
- main body
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- 238000004880 explosion Methods 0.000 claims description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 238000005266 casting Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000016507 interphase Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of capacitance compensation cabinets, and discloses a low-voltage capacitance compensation cabinet, which comprises a main body shell, wherein the bottom end of the inner wall of the main body shell is fixedly connected with a second fixing frame, the outer side of the second fixing frame is fixedly connected with a miniature circuit breaker, and the outer side of the second fixing frame is fixedly connected with a switching capacitance contactor; the group of normally open contacts are used for controlling a control power supply of the capacitance compensation cabinet; when any contact of the disconnecting link is not closed in place, the control power supply of the capacitance compensation cabinet is not electrified and does not work naturally, an operator can check the closing state of the disconnecting link and then take corresponding measures to eliminate the electric fire in the sprouting state, so that the safety of the device is improved.
Description
Technical Field
The utility model relates to the technical field of capacitance compensation cabinets, in particular to a low-voltage capacitance compensation cabinet.
Background
The low-voltage capacitance compensation cabinet is a complete set of devices which are formed by arranging a cabinet body, a power bus bar, a disconnecting link incoming line, a power disconnecting link, a disconnecting link outgoing line, a shunt line, a miniature circuit breaker, a switching capacitor contactor, a thermal overload protector, a capacitor and the like from top to bottom, and a disconnecting link arc extinguishing cover is usually arranged on the outer side of the power disconnecting link in the use process.
The prior art has the following defects: when arc light is generated, the arc-extinguishing cover cuts the arc light by a special structure, so that the arc light is rapidly dispersed and extinguished, but in actual operation, the knife switch is opened or closed by manual operation, and the knife switch is unbalanced in three-phase knife edge resistance due to mechanical ductility and mechanism looseness and the like, so that the following conditions often occur:
the method comprises the following steps: when the switch-on position of the disconnecting link is observed from the operation interface, the indication board displays switch-on in place; when the real state of the disconnecting link is watched from the rear of the capacitor cabinet, the disconnecting link is not switched on in place, the contact area is small, when a small amount of capacitors are put in, the running current is small, the disconnecting link can temporarily load, when the capacitors are all put in and the current is greatly increased, the disconnecting link generates heat, poor contact, virtual ignition, arc light and arc light high temperature melting disconnecting link column heads, and causes interphase arc light short circuit, namely metal powder and molten metal particles to fall above the miniature circuit breaker, short circuit and electric fire are continuously caused, and if the capacitors continue to fall, explosion and ignition of the capacitors are caused;
and two,: when the knife switch is in the above-mentioned closing state, although not in place completely, after the switch on, make the capacitor box start normally, have created precondition for the subsequent arc short-circuit accident;
and thirdly,: the disconnecting link is provided with a warning reminding device, and when an operator carelessly, the disconnecting link is provided with no interlocking guarantee measures.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a low-voltage capacitance compensation cabinet to solve the above-mentioned problems in the background art.
The utility model provides the following technical scheme: the low-voltage power supply compensation cabinet comprises a main body shell, wherein a first fixing frame is fixedly connected to the top end of the inner wall of the main body shell, a power supply disconnecting link main body is fixedly connected to the outer side of the first fixing frame, a second fixing frame is fixedly connected to the bottom end of the inner wall of the main body shell, a miniature circuit breaker is fixedly connected to the outer side of the second fixing frame, a switching capacitor contactor is fixedly connected to the outer side of the second fixing frame, a thermal overload protector is fixedly connected to the outer side of the second fixing frame, a disconnecting link knife rest is arranged on the surface of the power supply disconnecting link main body, limit switches are arranged on the top end of the surface of the power supply disconnecting link main body at equal intervals, a temperature monitor is fixedly connected to the middle part of the surface of the power supply disconnecting link main body, and an audible-visual alarm is fixedly connected to the front top end of the main body shell;
preferably, both ends of the two sides of the main body shell are fixedly connected with fixing blocks, both sides of the front side of the main body shell are movably connected with valve plates, and the surfaces of the valve plates are fixedly connected with buckles.
Preferably, the middle part fixedly connected with offset plate of main part shell inner wall, the offset plate is cast for insulating isolation fire-retardant rubber material and forms, the lower surface of offset plate is equipped with the reposition of redundant personnel busbar, the reposition of redundant personnel busbar is with the inner wall fixed connection of main part shell.
Preferably, the draw-in groove has been seted up to the back of power switch main part, the inner wall of draw-in groove and the outer wall fixed connection of first mount, the bottom equidistance on power switch main part surface is arranged there is the inlet wire contact, the top equidistance on power switch main part surface is arranged there is the outlet wire contact, the fixed surface of power switch main part is connected with the arc-extinguishing chamber, the top fixedly connected with water conservancy diversion busbar inlet wire row of power switch main part, the bottom fixedly connected with water conservancy diversion busbar outlet wire row of power switch main part.
Preferably, the top fixedly connected with insulation board of switch knife rest, one side fixedly connected with pull rod that the switch knife rest was kept away from to the insulation board, the equal fixedly connected with spacing bolt of one end that the switch knife rest kept away from the insulation board, the both ends of spacing bolt all with the inner wall fixed connection of inlet wire contact.
The utility model has the technical effects and advantages that:
1. the utility model is provided with the rubber plate, and the rubber plate is cast by insulating and isolating flame-retardant rubber materials, when the device is used, the rubber plate is not in direct contact with an outgoing line contact, a creepage gap of 2mm is reserved, and the condition of bus interphase short circuit can be prevented when the air humidity is large, so that the diffusion range of metal powder melted by an electric arc and the electric arc per se can be reduced, the electric fire overfire area can be controlled, and the stability of the device can be improved.
2. The limit switches are arranged right in front of the knife rest of the knife switch when the device is used, the number of the limit switches is three, the three limit switches are connected in series by adopting wires, a group of normally open contacts are reserved, and the normally open contacts are changed into normally closed contacts when the knife switch is in place; the group of normally open contacts are used for controlling a control power supply of the capacitance compensation cabinet; when any contact of the disconnecting link is not closed in place, the control power supply of the capacitance compensation cabinet is not electrified and does not work naturally, an operator can check the closing state of the disconnecting link and then take corresponding measures to eliminate the electric fire in the sprouting state, so that the safety of the device is improved.
3. According to the utility model, the temperature monitor is provided, when the device is used, the temperature monitor is provided with a group of normally-closed contacts which can be connected in series with the normally-open contacts of the limit switch, when the disconnecting link is in place, the normally-closed contacts are changed into normally-closed contacts, the temperature is normal, the audible and visual alarm has no moving signal and early warning signal, when the temperature reaches a set threshold value, the normally-closed contacts are changed into normally-open, the control power supply of the capacitance compensation cabinet is disconnected, the capacitance cabinet stops working, the temperature of the disconnecting link contacts is reduced, meanwhile, the device is provided with a group of normally-open contacts, when the temperature reaches the set threshold value, the normally-open contacts are changed into normally-closed contacts, the audible and visual alarm is connected, the operator is reminded of timely arriving at the scene to process the accident, the arc short-circuit accident caused by the disconnecting link fault is reduced, so that the electric fire is restrained, and the safe and efficient operation of the electrical equipment is protected to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic front view of the overall structure of the present utility model;
FIG. 3 is a schematic diagram of the miniature circuit breaker of the present utility model;
FIG. 4 is a schematic view of a partial structure of the present utility model;
FIG. 5 is a schematic view of the main structure of the power knife switch of the present utility model;
fig. 6 is a schematic view of a knife rest structure of the utility model.
The reference numerals are: 1. a main body housing; 101. a fixed block; 102. a shutter plate; 103. a handle is buckled; 104. a first fixing frame; 105. the second fixing frame; 106. a rubber plate; 107. a shunt bus bar; 2. a miniature circuit breaker; 201. a switching capacitor contactor; 202. a thermal overload protector; 3. a power knife switch main body; 301. a clamping groove; 302. a wire inlet contact; 303. an outgoing line contact; 304. an arc extinguishing cover; 305. a diversion bus line-in row; 306. a diversion bus outlet row; 4. a knife rest of a knife switch; 401. an insulating plate; 402. a pull rod; 403. a limit bolt; 5. a limit switch; 6. a temperature monitor; 7. an audible and visual alarm.
Detailed Description
The embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the present utility model, and the configurations of the structures described in the following embodiments are merely examples, and the low-voltage capacitance compensation cabinet according to the present utility model is not limited to the configurations described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any creative effort are within the scope of the present utility model.
The utility model provides a low-voltage power compensation cabinet, which comprises a main body shell 1, wherein the top end of the inner wall of the main body shell 1 is fixedly connected with a first fixing frame 104, the outer side of the first fixing frame 104 is fixedly connected with a power knife switch main body 3, the bottom end of the inner wall of the main body shell 1 is fixedly connected with a second fixing frame 105, the outer side of the second fixing frame 105 is fixedly connected with a miniature circuit breaker 2, the outer side of the second fixing frame 105 is fixedly connected with a switched capacitor contactor 201, the outer side of the second fixing frame 105 is fixedly connected with a thermal overload protector 202, the surface of the power knife switch main body 3 is provided with a knife switch knife rest 4, the top end of the surface of the power knife switch main body 3 is equidistantly arranged with a limit switch 5, the middle part of the surface of the power knife switch main body 3 is fixedly connected with a temperature monitor 6, the front top end of the main body shell 1 is fixedly connected with an audible and visual alarm 7, the back of the power knife switch main body 3 is provided with a clamping groove 301, the inner wall of the clamping groove 301 is fixedly connected with the outer wall of the first fixing frame 104, the bottom end of the surface of the power knife switch main body 3 is provided with wire inlet contacts 302 in an equidistant manner, the top end of the surface of the power knife switch main body 3 is provided with wire outlet contacts 303 in an equidistant manner, the surface of the power knife switch main body 3 is fixedly connected with an arc extinguishing cover 304, the top end of the power knife switch main body 3 is fixedly connected with a diversion bus wire inlet row 305, the bottom end of the power knife switch main body 3 is fixedly connected with a diversion bus wire outlet row 306, the top end of the knife switch knife rack 4 is fixedly connected with an insulating plate 401, one side of the insulating plate 401, which is far away from the knife switch knife rack 4, is fixedly connected with a pull rod 402, one end of the knife switch knife rack 4, which is far away from the insulating plate 401, is fixedly connected with a limit bolt 403, both ends of the limit bolt 403 are fixedly connected with the inner wall of the wire inlet contacts 302, and by being provided with a temperature monitor 6, the device can be connected in series with a normally open contact of the limit switch 5, when the disconnecting link is in place, the normally open contact is changed into a normally closed contact, when the disconnecting link operates normally, the temperature is normal, the audible and visual alarm 7 has no moving signal and early warning signal, when the temperature reaches a set threshold value, the normally closed contact is changed into normally open, the control power supply of the capacitance compensation cabinet is disconnected, the capacitance cabinet stops working, the temperature of the disconnecting link contact is reduced, meanwhile, the device leaves a group of normally open contacts, when the temperature reaches the set threshold value, the normally open contact is changed into the normally closed contact, the audible and visual alarm 7 is connected, an operator is reminded of timely arriving at the scene to treat accidents, arc short-circuit accidents caused by the disconnecting link faults are reduced, electric fires are restrained, and safe and efficient operation of electric equipment is protected to the maximum extent.
Further, both ends of main body housing 1 both sides are all fixedly connected with fixed block 101, the positive both sides of main body housing 1 all swing joint has valve board 102, the equal fixedly connected with of surface of valve board 102 is detained hand 103, the middle part fixedly connected with offset 106 of main body housing 1 inner wall, offset 106 is the casting of insulating isolation flame retardant rubber material and forms, offset 106's lower surface is equipped with shunt bus bar 107, shunt bus bar 107 and main body housing 1's inner wall fixed connection, through being equipped with offset 106, and offset 106 is the casting of insulating isolation flame retardant rubber material, during the use, offset 106 and contact 303 intersect the time of being qualified for next round of competitions, reserve 2 mm's creepage clearance, can prevent the condition that the bus interphase short circuit from taking place when air humidity is great, can reduce the metal powder of electric arc melting like this and the diffusion range of electric arc itself, control electric fire area excessively, be favorable to improving the stability of the device.
The working principle of the utility model is as follows: when the device is used, the glue plate 106 is formed by casting an insulating and isolating flame-retardant rubber material, when the device is used, the glue plate 106 is not in direct contact with an outgoing line contact 303, a creepage gap of 2mm is reserved, the condition that a bus is in short circuit is prevented when air humidity is large, the diffusion range of metal powder melted by an electric arc and the electric arc can be shortened, the area of an electric fire passing fire is controlled, the stability of the device is improved, and by arranging the limit switches 5, when the device is used, the limit switches 5 are positioned right in front of a knife rest 4, the number of the limit switches 5 is three, the three limit switches 5 are connected in series by adopting wires, and a group of normally open contacts are reserved, and when the knife switch is in place, the limit switches are changed into normally closed contacts; the group of normally open contacts are used for controlling a control power supply of the capacitance compensation cabinet; when the electric appliance is used, the temperature monitor 6 is provided with a group of normally closed contacts, the normally closed contacts can be connected in series with normally open contacts of the limit switch 5, when the electric appliance is closed in place, the normally closed contacts become normally closed contacts, the temperature is normal, the audible and visual alarm 7 has no moving signal and early warning signal, when the temperature reaches a set threshold value, the normally closed contacts become normally open, the control power supply of the capacitive compensation cabinet is disconnected, the electric appliance stops working, the temperature of the electric appliance contacts is reduced, meanwhile, the device leaves a group of normally open contacts, when the temperature reaches the set threshold value, the normally open contacts become normally closed contacts, the audible and visual alarm 7 is connected, the operator is reminded of timely arriving at the field to process accidents, arc short-circuit accidents caused by the electric appliance faults are reduced, so that the electric appliance is restrained, and the electric appliance is protected to operate safely and efficiently.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, other structures can refer to the general design, and the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (5)
1. The utility model provides a low-voltage capacitance compensation cabinet, includes main body shell (1), its characterized in that: the utility model discloses a power switch, including main part shell (1) and switch main part, top fixedly connected with first mount (104) of main part shell (1) inner wall, the outside fixedly connected with power switch main part (3) of first mount (104), the bottom fixedly connected with second mount (105) of main part shell (1) inner wall, the outside fixedly connected with miniature circuit breaker (2) of second mount (105), the outside fixedly connected with switch capacitor contactor (201) of second mount (105), the outside fixedly connected with thermal overload protector (202) of second mount (105), the surface of power switch main part (3) is equipped with switch knife rest (4), limit switch (5) are arranged to the top equidistance on power switch main part (3) surface, the middle part fixedly connected with temperature monitor (6) on power switch main part (3) surface, the positive top fixedly connected with audible-visual annunciator (7) of main part shell (1).
2. A low voltage power compensation cabinet according to claim 1, characterized in that: both ends of main body shell (1) both sides are all fixedly connected with fixed block (101), the positive both sides of main body shell (1) all swing joint has valve board (102), the surface of valve board (102) is all fixedly connected with buckle hand (103).
3. A low voltage power compensation cabinet according to claim 1, characterized in that: the middle part fixedly connected with offset plate (106) of main part shell (1) inner wall, offset plate (106) are cast for insulating isolation fire-retardant rubber material and form, the lower surface of offset plate (106) is equipped with reposition of redundant personnel busbar (107), reposition of redundant personnel busbar (107) and the inner wall fixed connection of main part shell (1).
4. A low voltage power compensation cabinet according to claim 1, characterized in that: draw-in groove (301) have been seted up at the back of power switch main part (3), the inner wall of draw-in groove (301) and the outer wall fixed connection of first mount (104), there is inlet wire contact (302) bottom equidistance on power switch main part (3) surface, there is outlet wire contact (303) on the top equidistance on power switch main part (3) surface, the fixed surface of power switch main part (3) is connected with explosion chamber (304), the top fixedly connected with water conservancy diversion busbar inlet wire row (305) of power switch main part (3), the bottom fixedly connected with water conservancy diversion busbar outlet wire row (306) of power switch main part (3).
5. A low voltage power compensation cabinet according to claim 1, characterized in that: the utility model discloses a switch knife rest, including switch knife rest (4), insulation board (401) are fixed connection on top, one side fixedly connected with pull rod (402) that switch knife rest (4) were kept away from to insulation board (4), the one end that switch knife rest (4) were kept away from insulation board (401) is all fixedly connected with stop cock (403), the both ends of stop cock (403) are all with the inner wall fixed connection of inlet wire contact (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861257.7U CN220341761U (en) | 2023-07-16 | 2023-07-16 | Low-voltage capacitance compensation cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861257.7U CN220341761U (en) | 2023-07-16 | 2023-07-16 | Low-voltage capacitance compensation cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220341761U true CN220341761U (en) | 2024-01-12 |
Family
ID=89456005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321861257.7U Active CN220341761U (en) | 2023-07-16 | 2023-07-16 | Low-voltage capacitance compensation cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220341761U (en) |
-
2023
- 2023-07-16 CN CN202321861257.7U patent/CN220341761U/en active Active
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