CN214673912U - Large-current air insulation switch cabinet - Google Patents
Large-current air insulation switch cabinet Download PDFInfo
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- CN214673912U CN214673912U CN202120330614.1U CN202120330614U CN214673912U CN 214673912 U CN214673912 U CN 214673912U CN 202120330614 U CN202120330614 U CN 202120330614U CN 214673912 U CN214673912 U CN 214673912U
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Abstract
The invention discloses a large-current air insulation switch cabinet which comprises a cabinet body, wherein a contact box mounting plate is arranged in the cabinet body, and the contact box mounting plate divides an inner cavity of the cabinet body into a front cabinet body and a rear cabinet body; a control chamber and a breaker chamber are arranged in the front cabinet body, and a first heat dissipation channel is arranged between the control chamber and the contact box mounting plate; a bus chamber and a cable chamber are arranged in the rear cabinet body, and a second heat dissipation channel is arranged between the bus chamber and the rear side plate of the cabinet body; a breaker supporting plate is arranged in the breaker chamber and divides the inner cavity of the breaker chamber into an upper compartment and a lower compartment from top to bottom; a first air inlet is formed in the cabinet door of the lower compartment, a second air inlet is formed in the lower portion of the rear side plate of the cabinet body, a first air outlet and a second air outlet are formed in the top of the cabinet body, a vent is formed in the circuit breaker supporting plate, and a first fan set is installed in the lower compartment; a third air outlet is formed in the upper portion of the rear side plate of the cabinet body, and a second fan unit is installed outside the cabinet body; the invention can carry out maintenance operation under the normal charged state.
Description
Technical Field
The invention relates to a high-current air insulation switch cabinet.
Background
Along with the development of a power grid, the improvement of equipment technology and the rapid increase of power load, in a 10kV and 35kV power system, a large number of high-current air-insulated switch cabinets are used in the power grid, the rated current of the switch cabinets is increasingly large, the load current of the 10kV side of some transformer substations reaches or even exceeds 3200A, the temperature rise of the switch cabinets in actual operation is increasingly high, the current high-current air-insulated switch cabinets in operation hardly meet the temperature rise requirement of national standards, the problem of excessive temperature rise is increasingly prominent, the temperature rise of the switch cabinets exceeds standard and directly influences the safe and stable operation of equipment, due to the requirement of the tightness of the switch cabinets, in some areas with heavy load, the internal overheating phenomenon of the switch cabinets becomes a common problem in the use of the switch cabinets, and the excessive temperature rise seriously influences the stability and the service life of the switch cabinets in operation; wherein, the interior sound contact cooperation department of contact box, circuit breaker utmost point post, circuit breaker contact arm and bus connection department in the cubical switchboard take place overheated phenomenon easily.
When the rated current level of the equipment reaches 3150A or above, forced air cooling measures are generally adopted, for example, heat dissipation materials are coated on the conductor or a heat conduction pipe is added on the conductor, although a certain cooling effect is achieved, the required cooling requirement cannot be met; if increase cooling fan, also can reduce the conductor temperature rise, but the structural style and the mounted position of fan also can influence the radiating effect of conductor, and when the fan broke down, because the fan is in the region that generates heat, and be close to the conductor, just can change after current cubical switchboard need the outage, the top at the cubical switchboard is installed to most fan current in addition, maintainer need scramble the top of cubical switchboard and maintain the operation, it is inconvenient to maintain, because main bus bar arranges in the bus-bar chamber of cubical switchboard, the bus-bar chamber generally is located the upper portion of cubical switchboard, maintainer steps on the roof of cubical switchboard, make the roof warp easily, the safe distance of conductor and roof reduces, lead to short-circuit fault, the incident appears even.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-current air insulation switch cabinet, which can replace and maintain a fan under the electrified state and meet the heat dissipation requirement, so that the convenience and the safety of the switch cabinet maintenance are improved.
The technical scheme adopted by the invention is as follows.
A large-current air insulation switch cabinet comprises a cabinet body, wherein a vertically arranged contact box mounting plate is arranged in the cabinet body, the contact box mounting plate is provided with a vent hole, and the contact box mounting plate divides an inner cavity of the cabinet body into a front cabinet body and a rear cabinet body; a control chamber and a circuit breaker chamber are sequentially arranged in the front cabinet body from top to bottom, and a first heat dissipation channel communicated with the circuit breaker chamber is reserved between the control chamber and the contact box mounting plate; a bus chamber and a cable chamber are sequentially arranged in the rear cabinet body from top to bottom, and a second heat dissipation channel communicated with the cable chamber is reserved between the bus chamber and the rear side plate of the cabinet body; a first contact box and a second contact box are mounted on the contact box mounting plate, holes are formed in the mounting position to communicate the front cabinet body and the rear cabinet body, the first contact box is located in the bus chamber, and the second contact box is located in the cable chamber; a breaker supporting plate which is horizontally arranged is arranged in the breaker chamber, the breaker supporting plate divides an inner cavity of the breaker chamber into an upper compartment and a lower compartment from top to bottom, and a lower compartment cabinet door is arranged on a front side plate of the cabinet body opposite to the lower compartment; the cabinet door of the lower compartment is provided with a first air inlet, the lower part of the rear side plate of the cabinet body is provided with a second air inlet, the top of the cabinet body is provided with a first air outlet communicated with the first heat dissipation channel, a second air outlet and a fourth air outlet communicated with the bus chamber, and the circuit breaker supporting plate is provided with a vent hole; and a third air outlet communicated with the second heat dissipation channel is further formed in the upper portion of the rear side plate of the cabinet body, and a second fan unit is installed outside the cabinet body rear side plate with the third air outlet.
On the basis of the technical scheme, the invention can be improved as follows:
according to the invention, an air supply pipe is connected between the first fan set and the circuit breaker supporting plate, the air inlet end face of the air supply pipe is inclined downwards, the first fan set is arranged on the air inlet end face of the air supply pipe through a connecting piece so that the air inlet of the first fan set points to the first air inlet, and the air outlet end of the air supply pipe is arranged towards the upper rear part.
The first air outlet, the second air outlet, the third air outlet and the fourth air outlet are respectively provided with a protective cover, the protective covers are arranged outside the cabinet body and are provided with heat dissipation holes, the second fan set is arranged in the protective cover at the third air outlet through a connecting piece, and the air outlet of the second fan set faces the upper rear direction.
The first air inlet and the second air inlet are formed by a plurality of small holes distributed in a matrix.
The first fan set and the second fan set respectively comprise at least two axial flow fans which are arranged at intervals.
A sealing plate is fixedly suspended at the top of the rear cabinet body, the bottom of the sealing plate is connected with one end of a middle bent plate with two bent ends, the other end of the middle bent plate is fixedly connected with the contact box mounting plate, and the sealing plate, the middle bent plate and the contact box mounting plate form the bus chamber.
Compared with the prior art, the technology of the invention has the following advantages:
(1) the high-current air insulation switch cabinet is provided with a first fan set and a second fan set, the first fan set is located in a lower compartment of a breaker chamber, a maintenance worker can maintain the first fan set only by opening a cabinet door of the lower compartment, the second fan set is located on the upper portion of a rear side plate of a cabinet body, and the maintenance worker can maintain the second fan set only by standing on the ground; moreover, because the first fan set and the second fan set are separated from the high-voltage and high-temperature electrified region of the switch cabinet, maintenance personnel can perform maintenance operation under the normal electrified state of the switch cabinet, thereby improving the convenience and the safety of the switch cabinet maintenance;
(2) according to the second fan set in the high-current air insulation switch cabinet, the air outlet of the second fan set is arranged towards the upper rear direction, so that hot air is blown obliquely upwards, and the hot air is prevented from scalding maintenance personnel head-on, so that the safety is further improved.
Drawings
The invention is described in further detail below with reference to the figures and the specific embodiments
FIG. 1 is a schematic side view of a high current air-insulated switchgear structure of the present invention;
FIG. 2 is a front view of the high current air insulated switchgear of the present invention;
FIG. 3 is a schematic perspective view of the front of the high current air insulated switchgear of the present invention;
FIG. 4 is a schematic perspective view of the rear of the high current air insulated switchgear of the present invention;
fig. 5 is a rear partial schematic view of the high-current air-insulated switchgear of the present invention.
Reference numbers on the drawings: 1-cabinet body, 2-contact box mounting plate, 3-control chamber, 4-breaker chamber, 5-first heat dissipation channel, 6-bus chamber, 7-cable chamber, 8-second heat dissipation channel, 9-first contact box, 10-second contact box, 11-breaker supporting plate, 12-lower compartment cabinet door, 13-first air inlet, 14-second air inlet, 15-first air outlet, 16-second air outlet, 17-first fan set, 18-third air outlet, 19-second fan set, 20-air supply pipe, 21-protective cover, 22-bus wire inlet terminal, 23-bus wire outlet terminal, 24-sealing plate, 25-middle bent plate, 26-fourth air outlet, 27-mounting plate, 28-sealing plate, 29-shutter, 30-power supply plug.
Detailed Description
Referring to fig. 1 to 5, the large-current air-insulated switchgear of the present embodiment includes a cabinet body 1, a vertically arranged contact box mounting plate 2 is arranged in the cabinet body, the contact box mounting plate 2 is provided with a plurality of vent holes, and the contact box mounting plate divides an inner cavity of the cabinet body 1 of the cabinet 2 into a front cabinet body and a rear cabinet body; a control chamber 3 and a circuit breaker chamber 4 are sequentially arranged in the front cabinet body from top to bottom, the control chamber 3 is arranged on the inner side of a front panel of the cabinet body, and a first heat dissipation channel 5 communicated with the circuit breaker chamber 4 is reserved between the rear wall of the control chamber 3 and the contact box mounting plate 2; a bus chamber 6 and a cable chamber 7 are sequentially arranged in the rear cabinet body from top to bottom, and a second heat dissipation channel 8 communicated with the cable chamber 7 is reserved between the bus chamber 6 and the rear side plate of the cabinet body 1; a first contact box 9 and a second contact box 10 are mounted on the contact box mounting plate 2, holes are formed in the mounting positions to communicate the front cabinet body and the rear cabinet body, the first contact box 9 is located in the bus chamber 6, and the second contact box 10 is located in the cable chamber 7; a horizontally arranged circuit breaker supporting plate 11 is arranged in the circuit breaker chamber 4, the circuit breaker supporting plate 11 vertically divides the inner cavity of the circuit breaker chamber 4 into an upper compartment and a lower compartment, and a lower compartment door 12 is arranged on a front side plate of the cabinet body 1 opposite to the lower compartment; a first air inlet 13 is formed in the lower compartment cabinet door 12, a second air inlet 14 is formed in the lower portion of the rear side plate of the cabinet body 1, a first air outlet 15 communicated with the first heat dissipation channel 5, a second air outlet 16 and a fourth air outlet 26 communicated with the bus chamber 6 are formed in the top of the cabinet body 1, a vent is formed in the circuit breaker supporting plate 11, a first fan set 17 is installed in the lower compartment, and the first fan set 17 is installed on the circuit breaker supporting plate 11; a third air outlet 18 communicated with the second heat dissipation channel 8 is arranged at the upper part of the rear side plate of the cabinet body 1, and a second fan set (19) is arranged outside the rear side plate of the cabinet body 1 with the third air outlet 18.
Because the first fan unit 17 is positioned in the lower compartment of the breaker chamber 4, a maintenance worker can maintain the first fan unit 17 only by opening the cabinet door 12 of the lower compartment, and the second fan unit 19 is positioned at the upper part of the rear side plate of the cabinet body 1, so that the maintenance worker can maintain the second fan unit 19 only by standing on the ground; in addition, the first fan set 17 and the second fan set 19 are both separated from the high-voltage and high-temperature electrified region of the switch cabinet, so that the high-current air-insulated switch cabinet in the embodiment can be maintained in a normal electrified state, and the convenience and the safety of switch cabinet maintenance are improved.
In this embodiment, an air supply pipe 20 is connected between the first fan unit 17 and the circuit breaker support plate 11, an air inlet end of the air supply pipe 20 is inclined downward, the first fan unit 17 is installed at the air inlet end of the air supply pipe 20 through a connecting piece, so that an air inlet of the first fan unit 17 points to a first air inlet, and an air outlet end of the air supply pipe 20 is arranged towards the upper rear portion, thereby improving the heat dissipation efficiency of the switch cabinet.
In the embodiment, the first air outlet 15, the second air outlet 16, the third air outlet 18 and the fourth air outlet 26 are all provided with a protective cover 21, the protective cover 21 is installed outside the cabinet body 1, the protective cover 21 is provided with heat dissipation holes, a second fan set 19 is installed in the protective cover 21 at the third air outlet 17 through an installation plate 27, the air outlet of the second fan set 19 is arranged in the upward direction, hot air is blown out obliquely upwards, and the situation that maintenance personnel are scalded by the hot air in the head-on direction is avoided, so that the safety of the switch cabinet is further improved; the protective cover 21 located at the third air outlet 17 is formed by connecting four end-to-end seal plates 28 and a shutter 29, and during maintenance, only the seal plate 28 on the left side or the right side of the protective cover is needed, the power supply plug 30 of the second fan set 19 is pulled out, and meanwhile, the bolt for fixing the mounting plate 27 is loosened, so that the second fan set and the mounting plate 27 can be detached simultaneously.
The first air inlet 13 and the second air inlet 14 in this embodiment are formed by a plurality of small holes distributed in a matrix, so that not only the ventilation area is increased, but also the overall strength of the plate body can be ensured.
The first fan set 17 and the second fan set 19 in this embodiment both include two axial fans arranged at intervals, and the number of the axial fans can be correspondingly increased to improve the heat dissipation efficiency according to the actual heat dissipation requirement;
the first air flow formed by the first fan unit 17 flows along the first heat dissipation channel 5 after sequentially passing through the first air inlet 13 and the vent, is exhausted from the first air outlet 15, discharges heat in the breaker chamber 4 from the first air outlet 15, can pass through an opening at the matching position of a moving contact and a fixed contact in the contact box and a vent hole on the contact box mounting plate 2 opposite to the bus chamber 6, is exhausted from the second air outlet 16, discharges heat in the bus chamber 6 from the second air outlet 16, and provides positive pressure for the contact box when the first air flow passes through the front side of the contact box;
a second air flow formed by blowing air by the second fan set 19 passes through the second air inlet 14 and then is exhausted from the third air outlet 18, heat in the cable chamber 7 is exhausted from the third air outlet 18 and the fourth air outlet 26, and a negative pressure is provided for the contact box when the second air flow passes through the rear side of the contact box;
under the combined action of positive and negative pressure difference, because the front side and the rear side of the contact box are communicated, more air flows are discharged from the third air outlet 18 and the fourth air outlet 26 after passing through the matching part of the breaker and the moving and static contacts in the contact box and the air vents on the contact box mounting plate 2 opposite to the cable chamber 7, so that the heat accumulated in the contact box is quickly discharged, the air flows pass through the inside and the outside of the contact box, and the effect of dual heat dissipation inside and outside is achieved.
The cabinet body 1 in this embodiment is equipped with bus incoming line terminal 22 and bus outgoing line terminal 23 outward, and the input and the bus incoming line terminal 22 of bus-bar room 6 are connected, and the output of bus-bar room 6 is connected through first contact box 9 with the input of circuit breaker room 4, and the input of cable chamber 7 passes through second contact box 10 with the output of circuit breaker room 4 to be connected, the output and the bus outgoing line terminal 23 of cable chamber 7.
The top of the rear cabinet body in this embodiment is hung and fixed with a closing plate 24, the bottom of the closing plate 24 is connected with one end of a middle bent plate 25 with two bent ends, the other end of the middle bent plate 25 is fixedly connected with the contact box mounting plate 2, and the closing plate 24, the middle bent plate 25 and the contact box mounting plate 2 form a bus chamber 6.
The above embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various modifications, substitutions or alterations made by the above structures of the present invention according to the above contents of the present invention can be made without departing from the basic technical idea of the present invention.
Claims (6)
1. A large-current air insulation switch cabinet comprises a cabinet body, wherein a vertically arranged contact box mounting plate is arranged in the cabinet body, the contact box mounting plate is provided with a vent hole, and the contact box mounting plate divides an inner cavity of the cabinet body into a front cabinet body and a rear cabinet body; a control chamber and a circuit breaker chamber are sequentially arranged in the front cabinet body from top to bottom, and a first heat dissipation channel communicated with the circuit breaker chamber is reserved between the control chamber and the contact box mounting plate; a bus chamber and a cable chamber are sequentially arranged in the rear cabinet body from top to bottom, and a second heat dissipation channel communicated with the cable chamber is reserved between the bus chamber and the rear side plate of the cabinet body; a first contact box and a second contact box are mounted on the contact box mounting plate, holes are formed in the mounting position to communicate the front cabinet body and the rear cabinet body, the first contact box is located in the bus chamber, and the second contact box is located in the cable chamber; a breaker supporting plate which is horizontally arranged is arranged in the breaker chamber, the breaker supporting plate divides an inner cavity of the breaker chamber into an upper compartment and a lower compartment from top to bottom, and a lower compartment cabinet door is arranged on a front side plate of the cabinet body opposite to the lower compartment; the cabinet door of the lower compartment is provided with a first air inlet, the lower part of the rear side plate of the cabinet body is provided with a second air inlet, the top of the cabinet body is provided with a first air outlet communicated with the first heat dissipation channel, a second air outlet and a fourth air outlet communicated with the bus chamber, and the circuit breaker supporting plate is provided with a vent hole; and a third air outlet communicated with the second heat dissipation channel is further formed in the upper portion of the rear side plate of the cabinet body, and a second fan unit is installed outside the cabinet body rear side plate with the third air outlet.
2. The high-current air insulation switch cabinet according to claim 1, wherein a blast pipe is connected between the first fan unit and the circuit breaker supporting plate, an air inlet end face of the blast pipe is inclined downward, the first fan unit is mounted on the air inlet end face of the blast pipe through a connecting piece so that an air inlet of the first fan unit is directed to the first air inlet, and an air outlet end of the blast pipe is arranged towards the upper rear.
3. A high current air-insulated switchgear as claimed in claim 2, wherein the first outlet, the second outlet, the third outlet and the fourth outlet are provided with protective covers, the protective covers are installed outside the switchgear, the protective covers are provided with heat dissipation holes, wherein the second fan set is installed in the protective cover at the third outlet through a connector, and the outlet of the second fan set is arranged in the upward direction.
4. A high current air insulated switchgear as claimed in claim 3, wherein said first air inlet and said second air inlet are formed by a plurality of small holes distributed in a matrix.
5. The high current air insulated switchgear of claim 4 wherein said first fan stack and said second fan stack each include at least two axial fans spaced apart.
6. A large-current air-insulated switchgear according to claim 5, wherein a sealing plate is suspended and fixed on the top of the rear cabinet body, the bottom of the sealing plate is connected with one end of a middle bent plate with two bent ends, the other end of the middle bent plate is fixedly connected with the contact box mounting plate, and the sealing plate, the middle bent plate and the contact box mounting plate form the bus chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330614.1U CN214673912U (en) | 2021-02-05 | 2021-02-05 | Large-current air insulation switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120330614.1U CN214673912U (en) | 2021-02-05 | 2021-02-05 | Large-current air insulation switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214673912U true CN214673912U (en) | 2021-11-09 |
Family
ID=78446383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120330614.1U Active CN214673912U (en) | 2021-02-05 | 2021-02-05 | Large-current air insulation switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214673912U (en) |
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2021
- 2021-02-05 CN CN202120330614.1U patent/CN214673912U/en active Active
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