CN103236654A - Power switch cabinet - Google Patents
Power switch cabinet Download PDFInfo
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- CN103236654A CN103236654A CN2013101179512A CN201310117951A CN103236654A CN 103236654 A CN103236654 A CN 103236654A CN 2013101179512 A CN2013101179512 A CN 2013101179512A CN 201310117951 A CN201310117951 A CN 201310117951A CN 103236654 A CN103236654 A CN 103236654A
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- cabinet
- power switch
- electric power
- switch cubicle
- exhaust vent
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Abstract
The invention relates to a power switch cabinet which comprises a cabinet body. The cabinet body is provided with an air inlet and an air outlet. An exhauster is disposed at the air outlet. Since the cabinet body is provided with the air inlet and the air outlet and the exhauster is disposed at the air outlet, the exhauster operates to exhaust vapor in the cabinet body when the interior humidity of the cabinet reaches a set value. Dehumidification capacity is fine, arcing discharging in moving and fixed contacts is avoided, the service lives of power devices are prolonged, and maintenance cost is low.
Description
Technical field
The present invention relates to a kind of electric power equipment, relate to a kind of electric power switch cubicle specifically.
Background technology
Present employed electric power is generally the sealing design with switch cubicle, this is for preventing that toy from entering, damaging the consideration of electric power facility, because sealing is tighter, there is not obvious gap between the cabinet, almost be in complete stuffy state, cause the switch cubicle natural draft poor, hinder cross-ventilation, moisture can't in time be discharged, cause in the cabinet ambient humidity bigger, easily cause between the dynamic and static contact of switch and discharge, thereby cause the damage of electrical device.
Be example with the 35kV intermediate switchgear cabinet, because moisture can't be discharged in the cabinet, the dynamic and static contact of switch is burnt, and this contact is burnt, and dynamic and static contact arcing discharge causes because humidity in the cabinet causes more greatly in accident system.
The maintainer changes the wheelbarrow switch, insulating sleeve and the fixed contact that damage, and the group member has added up economic loss such as following table:
| Change classification | Wheelbarrow switch | Insulating sleeve | Fixed contact takes | Vehicle expense | Labour cost | Add up to |
| Expense/unit | 72000 | 3000 | 4100 | 200 | 500 | 79800 |
As seen from the above table, the renewal cost of electric power components and parts is very high, maintenance and maintenance cost height.
For the concrete condition of the existing dehydrating unit of deblocking enclosed switch cubicle, we on June 1st, 2011 between August 31, randomly draw institute and have jurisdiction over 6 the 35kV intermediate switchgear cabinets of standing, its moisture removal has been carried out statistical analysis, as following table:
Moisture removal: refer to the drop-out value of humidity in the air in confined space in the unit interval, room or zone, i.e. Q=(P1-P2)/Vh, unit: RH%/m
3H (cubic meter hour).
As can be seen from the above table, existing heating moisture separating device moisture removal only is 0.45H%/m
3H, effect on moisture extraction is undesirable, and moisture can not evaporate away by inner air and outer air exchange, causes the interior equipment operating environment humidity of cabinet higher, and the safe operation of equipment has been constituted very big threat.
Summary of the invention
The problem to be solved in the present invention is at above problem, provides that a kind of moisture removal is good, maintenance and the low electric power switch cubicle of maintenance cost.
For addressing the above problem, the technical solution adopted in the present invention is: the electric power switch cubicle, comprise cabinet, and described cabinet is provided with air inlet and exhaust vent, and described exhaust vent place is provided with air exhausting device.
As a kind of prioritization scheme, described exhaust vent is positioned at the top of cabinet.
As a kind of prioritization scheme, the top of described cabinet is provided with through hole, and described through hole is provided with cover plate, and described exhaust vent is positioned on the cover plate and with through hole and is communicated with.
By increasing cover plate, exhaust vent is positioned on the cover plate, and manufacturing process is simple, and split processing can not damage cabinet, and cost is low.
As a kind of prioritization scheme, the quantity of described exhaust vent is several.
As a kind of prioritization scheme, described air exhausting device is positioned at the top of exhaust vent.
Exhaust vent and air exhausting device are arranged on the top of cabinet, and effect on moisture extraction is better than the front and rear that exhaust vent is arranged on cabinet, and do not influence tour, meet safety regulations.
A kind of concrete prioritization scheme, described air exhausting device are axial fan.
A kind of concrete prioritization scheme, the distance of the center of described air exhausting device and cabinet top cross bottom is 251.2mm.
As a kind of prioritization scheme, described air inlet is positioned at the rear portion of cabinet.
Air inlet is arranged on the rear portion of cabinet, and effect on moisture extraction is better than top and the front portion that air inlet is arranged on cabinet, can not cause security threat to operating personnel, also satisfies safety requirements with equipment in cabinet distance.
As a kind of prioritization scheme, described air inlet is windproof blinds air inlet.
As a kind of prioritization scheme, be provided with humidity controlling unit and humidity sensor in the described cabinet, described humidity controlling unit is electrically connected with humidity sensor and air exhausting device respectively.
Work by humidity sensor and humidity controlling unit control air exhausting device and stopping, air exhausting device is controlled automatically, and control is accurately.
The present invention takes above technical scheme, have the following advantages: cabinet is provided with air inlet and exhaust vent, the exhaust vent place is provided with air exhausting device, when humidity reached set point in cabinet, the aqueous vapor in the cabinet was discharged in air exhausting device work, moisture removal is good, avoided dynamic and static contact arcing discharge, prolonged the useful life of electric power components and parts, maintenance and maintenance cost are low.
By experiment as can be known, the moisture removal of this switch cubicle is 8.1H%/m
3H is much higher than the moisture removal that has switch cubicle now.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing 1 is the structural representation that electric power is used switch cubicle in the embodiment of the invention;
Accompanying drawing 2 is the right view of accompanying drawing 1;
Accompanying drawing 3 is the structural representation of accompanying drawing 1 cover plate;
The schematic diagram that accompanying drawing 4 is selected for the air inlet pattern;
Accompanying drawing 5 is the schematic diagram of air exhausting device installation site;
Accompanying drawing 6 is air exhausting device installation site experimental test result schematic diagram for the first time;
Accompanying drawing 7 is air exhausting device installation site experimental test result schematic diagram for the second time.
Among the figure:
The 1-cabinet; The 2-support; The 3-supporting bracket; The 4-air exhausting device; The 5-exhaust vent; The 6-through hole; The 7-cover plate; The 8-air inlet.
Embodiment
Embodiment: as shown in Figures 1 and 2, the electric power switch cubicle comprises cabinet 1, and cabinet 1 is provided with air inlet 8 and exhaust vent 5, and exhaust vent 5 places are provided with air exhausting device 4.
Air inlet 8 is positioned at the rear portion of cabinet 1.
The selection of air inlet 8 positions:
As seen from the above table, air inlet 8 is positioned at the rear portion of cabinet 1, and effect on moisture extraction is best, the safe distance maximum.
Air inlet 8 is arranged on the rear portion of cabinet 1, and effect on moisture extraction is better than top and the front portion that air inlet 8 is arranged on cabinet 1, can not cause security threat to operating personnel, also satisfies safety requirements with equipment distance in the cabinet 1.
Air inlet 8 is windproof blinds air inlet.
The selection of air inlet 8 patterns: as shown in Figure 4.
The top of cabinet 1 is provided with through hole 6, and through hole 6 places are provided with cover plate 7, and exhaust vent 5 is positioned on the cover plate 7 and with through hole 6 and is communicated with.
Cover plate 7 is fixedlyed connected with cabinet 1 by screw bolt and nut.
The material of cover plate 7 is steel plate, and its intensity satisfies instructions for use, can avoid directly when the top of the cabinet 1 processing exhaust vent 5 damage to cabinet 1 by installing cover plate 7 additional, and manufacturing process is simple, can process separately, and cost is low.
As shown in Figure 3, the quantity of exhaust vent 5 is several, and several exhaust vents 5 distribute radially, adopts radial exhaust vent 5, can satisfy best instructions for use.
As shown in Figures 1 and 2, air exhausting device 4 is positioned at the top of exhaust vent 5, and air exhausting device 4 is axial fan.
Be fixedly connected with on the cover plate 7 at cabinet 1 top between 2, two supports 2 of two supports and be provided with supporting bracket 3, air exhausting device 4 is fixed on the supporting bracket 3.
Fixing by support 2 and supporting bracket 3, effect is best, and is as shown in the table:
By experiment as can be known, air exhausting device 4 is installed in the top of cabinet 1, effect on moisture extraction is best, and is as shown in the table:
The distance of the center of air exhausting device 4 and cabinet 1 top cross bottom is 251.2mm, and this installation site moisture removal effect is best, as shown in Figure 5.
Experimental test result for the first time, as shown in Figure 6.
Experimental test result for the second time, as shown in Figure 7.
Fixing point X3 with test draws, verify:
Be provided with humidity controlling unit and humidity sensor in the cabinet 1, humidity controlling unit is electrically connected with humidity sensor and air exhausting device 4 respectively.
Transform at available circuit, the work by humidity sensor and humidity controlling unit control air exhausting device 4 and stopping, air exhausting device 4 control automatically, and control is accurate.
From above statistical form as can be seen, the air exhausting device performance factor is 100% automatically.
The selection of axial flow blower, air inlet 8 and exhaust vent 5 specifications:
(1) selects L18(3 for use
6) orthogonal arrage, do 18 tests altogether, each factor is selected three position utmost points.
(2) formulate factor level (the position utmost point) table
Test result analysis:
Compare 18 humidity drop-out values, No. 2 tests, humidity drop-out value 16RH%/h, moisture removal 9.2RH%/h*m
3, A1, B2, C2, D2, E2, F2 combined result are best, and best of breed is defined as: A1, B2, C2, D2, E2, F2.。
Significance level and trend that each factor influences the result: can find out that from extreme difference R influencing humidity decline the biggest factor is power of fan, be rotation speed of fan secondly, and minimum is ventilation hole quantity.
The experiment of this switch cubicle in actual application.
Our company utilizes full station, 35kV Tai Feng station interruption maintenance chance in May, 2012, through the approval of safety supervision portion of company, the 35kV intermediate switchgear cabinet is installed air exhausting device, and between in June, 2012-August, moisture removal in 4 35kV intermediate switchgear cabinets of Tai Feng transformer station is added up, as following table:
The table of going up is arranged as can be known, the moisture removal of 35kV intermediate switchgear cabinet has reached 8.1H%/m
3H is much higher than the moisture removal that has switch cubicle now.
Performance analysis:
Claims (10)
1. the electric power switch cubicle comprises cabinet (1), it is characterized in that: described cabinet (1) is provided with air inlet (8) and exhaust vent (5), and described exhaust vent (5) locates to be provided with air exhausting device (4).
2. electric power switch cubicle as claimed in claim 1, it is characterized in that: described exhaust vent (5) is positioned at the top of cabinet (1).
3. electric power switch cubicle as claimed in claim 1, it is characterized in that: the top of described cabinet (1) is provided with through hole (6), and described through hole (6) locates to be provided with cover plate (7), and described exhaust vent (5) is positioned at cover plate (7) and goes up and be communicated with through hole (6).
4. electric power switch cubicle as claimed in claim 1 is characterized in that: the quantity of described exhaust vent (5) is several.
5. as one of them described electric power switch cubicle of claim 1-4, it is characterized in that: described air exhausting device (4) is positioned at the top of exhaust vent (5).
6. electric power switch cubicle as claimed in claim 5, it is characterized in that: described air exhausting device (4) is axial fan.
7. electric power switch cubicle as claimed in claim 5 is characterized in that: the distance of the center of described air exhausting device (4) and cabinet (1) top cross bottom is 251.2mm.
8. as one of them described electric power switch cubicle of claim 1-3, it is characterized in that: described air inlet (8) is positioned at the rear portion of cabinet (1).
9. as one of them described electric power switch cubicle of claim 1-3, it is characterized in that: described air inlet (8) is windproof blinds air inlet.
10. as one of them described electric power switch cubicle of claim 1-3, it is characterized in that: described cabinet is provided with humidity controlling unit and humidity sensor in (1), and described humidity controlling unit is electrically connected with humidity sensor and air exhausting device (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101179512A CN103236654A (en) | 2013-04-07 | 2013-04-07 | Power switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101179512A CN103236654A (en) | 2013-04-07 | 2013-04-07 | Power switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103236654A true CN103236654A (en) | 2013-08-07 |
Family
ID=48884679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101179512A Pending CN103236654A (en) | 2013-04-07 | 2013-04-07 | Power switch cabinet |
Country Status (1)
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| CN (1) | CN103236654A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579945A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | 10kV high-voltage switch cabinet |
| CN103812032A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN103812033A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN108832514A (en) * | 2018-07-16 | 2018-11-16 | 向荣集团有限公司 | A kind of electrical cabinet convenient for heat dissipation |
| CN112214939A (en) * | 2020-09-29 | 2021-01-12 | 国网福建省电力有限公司 | Switch cabinet heater installation mode optimization method based on orthogonal test design |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315656B1 (en) * | 1998-02-07 | 2001-11-13 | Rittal-Werk Rudolf Loh Gmbh & Co. Kg | Fan for mounting on a wall member of a control cabinet |
| CN1756012A (en) * | 2004-09-29 | 2006-04-05 | 达诺尔电气(集团)有限公司 | Waterproof and dustproof power distribution cabinet |
| CN101692530A (en) * | 2009-09-22 | 2010-04-07 | 山东电力集团公司烟台供电公司 | Exhausting device capable of automatically controlling temperature and humidity in high-voltage room of substation |
| CN201509021U (en) * | 2009-09-22 | 2010-06-16 | 山东电力集团公司烟台供电公司 | Condensation-proof combined box-type substation |
| CN102082398A (en) * | 2010-10-21 | 2011-06-01 | 江苏大全凯帆电器股份有限公司 | Mandatory cooling switch cabinet |
| CN201910978U (en) * | 2010-12-23 | 2011-07-27 | 福州新锐同创电子科技有限公司 | Intelligent control cabinet |
| CN202363754U (en) * | 2011-12-01 | 2012-08-01 | 河南省电力公司信阳供电公司 | Novel terminal box |
-
2013
- 2013-04-07 CN CN2013101179512A patent/CN103236654A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315656B1 (en) * | 1998-02-07 | 2001-11-13 | Rittal-Werk Rudolf Loh Gmbh & Co. Kg | Fan for mounting on a wall member of a control cabinet |
| CN1756012A (en) * | 2004-09-29 | 2006-04-05 | 达诺尔电气(集团)有限公司 | Waterproof and dustproof power distribution cabinet |
| CN101692530A (en) * | 2009-09-22 | 2010-04-07 | 山东电力集团公司烟台供电公司 | Exhausting device capable of automatically controlling temperature and humidity in high-voltage room of substation |
| CN201509021U (en) * | 2009-09-22 | 2010-06-16 | 山东电力集团公司烟台供电公司 | Condensation-proof combined box-type substation |
| CN102082398A (en) * | 2010-10-21 | 2011-06-01 | 江苏大全凯帆电器股份有限公司 | Mandatory cooling switch cabinet |
| CN201910978U (en) * | 2010-12-23 | 2011-07-27 | 福州新锐同创电子科技有限公司 | Intelligent control cabinet |
| CN202363754U (en) * | 2011-12-01 | 2012-08-01 | 河南省电力公司信阳供电公司 | Novel terminal box |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579945A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | 10kV high-voltage switch cabinet |
| CN103579945B (en) * | 2013-11-12 | 2016-06-29 | 宁格朗电气股份有限公司 | 10KV high-tension switch cabinet |
| CN103812032A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN103812033A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN108832514A (en) * | 2018-07-16 | 2018-11-16 | 向荣集团有限公司 | A kind of electrical cabinet convenient for heat dissipation |
| CN112214939A (en) * | 2020-09-29 | 2021-01-12 | 国网福建省电力有限公司 | Switch cabinet heater installation mode optimization method based on orthogonal test design |
| CN112214939B (en) * | 2020-09-29 | 2023-04-04 | 国网福建省电力有限公司 | Switch cabinet heater installation mode optimization method based on orthogonal test design |
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Application publication date: 20130807 |