CN201781248U - Hot-air maintenance device for isolated phase buses - Google Patents
Hot-air maintenance device for isolated phase buses Download PDFInfo
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- CN201781248U CN201781248U CN2010205003075U CN201020500307U CN201781248U CN 201781248 U CN201781248 U CN 201781248U CN 2010205003075 U CN2010205003075 U CN 2010205003075U CN 201020500307 U CN201020500307 U CN 201020500307U CN 201781248 U CN201781248 U CN 201781248U
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- motorized operation
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Abstract
The utility model discloses a hot-air maintenance device for isolated phase buses, which comprises a humidity probe, an air blower, an air heater, an electric valve I, an electric valve II, an electric valve III and a programmable logic controller, wherein air inlet pipelines of casings of three-phase isolated phase buses are connected in parallel to form a main air inlet pipeline; air return pipelines of the casings of the three-phase isolated phase buses are connected in parallel to form a main air return pipeline; the humidity probe is arranged in an optional one of the isolated phase buses; an air strainer I is arranged in front of an input end of the air blower; an output end of the air blower is connected with an input end of the air heater; an output end of the air heater is connected with the main air inlet pipeline sequentially by the air strainer and the electric valve I; and the main air return pipeline is communicated with air through the electric valve II. A blow-off pipe is further connected to the output end of the air heater in a bypass manner. The programmable logic controller controls the air blower, the air heater and the electric valves to start and stop according to signals of the humidity probe. The hot-air maintenance device for isolated phase buses can effectively reduce relative humidity of air, prevent condensation, and improve insulation performance of the isolated phase buses.
Description
Technical field
The utility model relates to a kind of isolated-phase enclosed bus drying device, and the anti-condensation hot-air drying device of especially a kind of isolated-phase enclosed bus belongs to electrical equipment technical field.
Background technology
Isolated-phase enclosed bus is the big current transmission device that is widely used in 500MW and above generator lead-out wire loop and station-service duplexure, isolated-phase enclosed bus is a kind of transmission of electricity closed conduit, when enclosed busbar moves, air themperature in the bus shell generally than ring mirror temperature high 30 ℃～50 ℃, after enclosed busbar is out of service, temperature can slowly descend, until reaching ambient temperature, be easy to generate condensation in this process, thereby reduce the insulation property of bus, if at this moment enclosed busbar puts into operation again, just might have an accident.For preventing condensation, mainly take three kinds of methods at present, i.e. pressure-fired aeration, dry maintenance method and hot blast maintenance method.The pressure-fired aeration is by charging into dry air in bus shell, make the bus shell internal pressure greater than ambient pressure, stop outside humid air to enter, this method is higher to the sealing requirements of bus shell, the plant maintenance workload is big, is difficult to reach the effect of working preferably.Dry maintenance method is that the isolated-phase enclosed bus two ends are connected with dried-air drier, removes airborne moisture in the bus shell by air circulation, makes air humidity reduction in the bus shell, and this method energy consumption is big, and noise is big during work.Existing hot blast care device complex structure is not easy to maintaining, and needs the special messenger to guard.
The utility model content
The purpose of this utility model provide a kind of simple in structure, be convenient to safeguard, can effectively reduce air humidity in the isolated-phase enclosed bus shell, prevent the isolated-phase enclosed bus hot blast care device that the condensation phenomenon takes place.
The utility model is achieved by the following technical programs:
A kind of isolated-phase enclosed bus hot blast care device, comprise moisture probe, blower fan, air heater, valve with electrically motorized operation I, valve with electrically motorized operation II, valve with electrically motorized operation III, Programmable Logic Controller, the air inlet pipeline of each phase shell of three-phase enclosed busbar also is unified into each phase shell outlet pipe of total inlet pipe road, three-phase enclosed busbar and is unified into total outlet pipe; Described moisture probe is arranged in any phase enclosed busbar, blower fan input front side is provided with air strainer I, the blower fan output is connected with described air heater input, the air heater output successively is connected with the total inlet pipe road by air strainer, valve with electrically motorized operation I, and described total outlet pipe leads to atmosphere by valve with electrically motorized operation II.Described air heater output is also other to connect blowdown pipe, and described blowdown pipe leads to atmosphere by valve with electrically motorized operation III.
The purpose of this utility model can also further realize by following technical measures.
Aforesaid isolated-phase enclosed bus hot blast care device, wherein said moisture probe holding wire links to each other with the PLC programmable controller by the relative humidity instrument, and described blower fan, air heater, valve with electrically motorized operation I, valve with electrically motorized operation II, valve with electrically motorized operation III link to each other with the PLC programmable controller by holding wire respectively.
The utility model is simple in structure, and instant effect is not high to three-phase enclosed busbar seal request, is easy to arrange and safeguard that equipment investment is less.The utility model as the major control amount, has fundamentally guaranteed the insulation property in the three-phase enclosed busbar with the relative humidity in the three-phase enclosed busbar.The switch of the commands for controlling electrically operated valve by PLC overcomes the shortcoming that the manual operation controlled valve is loaded down with trivial details, make mistakes easily, need not the special messenger guard, has realized the automation of whole process.
Advantage of the present utility model and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model comprises moisture probe 2, blower fan 4, air heater 5, valve with electrically motorized operation I9, valve with electrically motorized operation II10, valve with electrically motorized operation III30, Programmable Logic Controller 3, and the air inlet pipeline of three-phase enclosed busbar 1 each phase shell also is unified into the outlet pipe of total inlet pipe road 11, three-phase enclosed busbar 1 each phase shell and is unified into total outlet pipe 12.Moisture probe 2 is arranged in any phase enclosed busbar, and blower fan 4 input front sides are provided with air strainer I6, will be through filtered air input blower fan 4, and blower fan 4 outputs are connected with air heater 5 inputs.Air heater 5 outputs successively are connected with total inlet pipe road 11 by air strainer II40, valve with electrically motorized operation I9, to be divided into three the tunnel through the hot-air that filters once more imports respectively in three-phase enclosed busbar 1 each phase shell, pass the hot-air three tunnel of three-phase enclosed busbar 1 and become total outlet pipe 12 one tunnel, total outlet pipe 12 is driven away discharge by valve with electrically motorized operation II10 with the moisture in the bus, improve the temperature in the bus simultaneously, thereby reduced the relative humidity of air in the bus, played the effect of maintenance bus.Air heater 5 outputs also by the other blowdown pipe of connecting to atmosphere 20 of valve with electrically motorized operation III30, start blower fan 4, open valve with electrically motorized operation III30 and device body pipeline inner rust thing or dirt directly can be discharged, and the air of avoiding being blown into bus contains foreign material.
Moisture probe 2 holding wires link to each other with PLC programmable controller 3 by relative humidity instrument 8, and blower fan 4, air heater 5, valve with electrically motorized operation I9, valve with electrically motorized operation II10, valve with electrically motorized operation III30, platinum resistance 7 link to each other with PLC programmable controller 3 by holding wire respectively.
After Programmable Logic Controller 3 detects the compressor emergency shutdown signal; controlled humidity probe 2 detects the relative humidity of air in the enclosed busbar 1 automatically; after the relative humidity of air in the three-phase enclosed busbar 1 reaches set point; Programmable Logic Controller 3 instructions start blower fan 4 and air heater 5; open valve with electrically motorized operation I9; valve with electrically motorized operation II10; blower fan 4 constantly is blown into air to air heater 5; air heater 5 hot-blast outlet platinum resistance 7 detect outlet air temperature and feed back to Programmable Logic Controller 3; Programmable Logic Controller 3 heats air according to the just definite number that drops into the heating unit 51 of air heater 5 of temperature.Air after the heating divides three the tunnel to enter respectively in every phase enclosed busbar 1 shell by valve with electrically motorized operation I9, total inlet pipe road 11 along the direction of arrow in the figure, discharges by the total outlet pipe 12 of three-phase enclosed busbar 1 other end, valve with electrically motorized operation II10 again.Along with gas constantly enters, the wet gas in the three-phase enclosed busbar shell 1 is pulled away, and relative air humidity reduces.Prescribe a time limit when the relative air humidity value reaches under the set point, Programmable Logic Controller 3 control blower fans 4 and air heater 5 stop, and valve with electrically motorized operation I9, valve with electrically motorized operation II10, valve with electrically motorized operation III30 close, and finish a work period.
In addition to the implementation, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (3)
1. isolated-phase enclosed bus hot blast care device, it is characterized in that: comprise moisture probe, blower fan, air heater, valve with electrically motorized operation I, valve with electrically motorized operation I, valve with electrically motorized operation III, Programmable Logic Controller, the air inlet pipeline of each phase shell of three-phase enclosed busbar also is unified into the outlet pipe of total inlet pipe road, each phase shell of three-phase enclosed busbar and is unified into total outlet pipe; Described moisture probe is arranged in any phase enclosed busbar, blower fan input front side is provided with air strainer I, the blower fan output is connected with described air heater input, the air heater output successively is connected with the total inlet pipe road by air strainer II, valve with electrically motorized operation I, and described total outlet pipe leads to atmosphere by valve with electrically motorized operation II.
2. isolated-phase enclosed bus hot blast care device as claimed in claim 1 is characterized in that: described air heater output is also other to connect blowdown pipe, and described blowdown pipe leads to atmosphere by valve with electrically motorized operation III.
3. isolated-phase enclosed bus hot blast care device as claimed in claim 1, it is characterized in that: described moisture probe holding wire links to each other with the PLC programmable controller by the relative humidity instrument, and described blower fan, air heater, valve with electrically motorized operation I, valve with electrically motorized operation II, valve with electrically motorized operation III, platinum resistance link to each other with the PLC programmable controller by holding wire respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205003075U CN201781248U (en) | 2010-08-20 | 2010-08-20 | Hot-air maintenance device for isolated phase buses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205003075U CN201781248U (en) | 2010-08-20 | 2010-08-20 | Hot-air maintenance device for isolated phase buses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201781248U true CN201781248U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205003075U Expired - Lifetime CN201781248U (en) | 2010-08-20 | 2010-08-20 | Hot-air maintenance device for isolated phase buses |
Country Status (1)
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| CN (1) | CN201781248U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496895A (en) * | 2011-12-13 | 2012-06-13 | 华东宜兴抽水蓄能有限公司 | Drying device applied to pumped storage power station closed bus |
| CN102830738A (en) * | 2012-09-12 | 2012-12-19 | 江苏大全封闭母线有限公司 | Device for preventing moisture condensation of closed bus |
| CN104882837A (en) * | 2015-05-25 | 2015-09-02 | 镇江市高等专科学校 | Enclosed busbar micro-positive-pressure hot air maintenance apparatus |
| CN104923041A (en) * | 2015-04-30 | 2015-09-23 | 国家电网公司 | Drying device for closed busbar and closed container at outlet of generator and motor |
-
2010
- 2010-08-20 CN CN2010205003075U patent/CN201781248U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496895A (en) * | 2011-12-13 | 2012-06-13 | 华东宜兴抽水蓄能有限公司 | Drying device applied to pumped storage power station closed bus |
| CN102830738A (en) * | 2012-09-12 | 2012-12-19 | 江苏大全封闭母线有限公司 | Device for preventing moisture condensation of closed bus |
| CN104923041A (en) * | 2015-04-30 | 2015-09-23 | 国家电网公司 | Drying device for closed busbar and closed container at outlet of generator and motor |
| CN104882837A (en) * | 2015-05-25 | 2015-09-02 | 镇江市高等专科学校 | Enclosed busbar micro-positive-pressure hot air maintenance apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHENJIANG EAST CHINA ELECTRIC POWER EQUIPMENT FACT Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP ZHENJIANG EAST CHINA ELECTRIC POWER EQUIPMENT FACTORY Owner name: CHINA ENERGY ENGINEERING GROUP ZHENJIANG EAST CHIN Free format text: FORMER NAME: ZHENJIANG EAST CHINA ELECTRIC POWER EQUIPMENT FACTORY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Seven Austin 212017 Zhenjiang city of Jiangsu Province, Runzhou District Patentee after: ZHENJIANG EAST CHINA ELECTRIC POWER EQUIPMENT CO.,LTD. Address before: Seven Austin 212017 Zhenjiang city of Jiangsu Province, Runzhou District Patentee before: China Energy Engineering Group Zhenjiang East China Electric Power Equipment Factory Address after: Seven Austin 212017 Zhenjiang city of Jiangsu Province, Runzhou District Patentee after: China Energy Engineering Group Zhenjiang East China Electric Power Equipment Factory Address before: Seven Austin 212017 Zhenjiang city of Jiangsu Province, Runzhou District Patentee before: Zhenjiang East China Electric Power Equipment Factory |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |