CN104882837A - Enclosed busbar micro-positive-pressure hot air maintenance apparatus - Google Patents
Enclosed busbar micro-positive-pressure hot air maintenance apparatus Download PDFInfo
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- CN104882837A CN104882837A CN201510270408.5A CN201510270408A CN104882837A CN 104882837 A CN104882837 A CN 104882837A CN 201510270408 A CN201510270408 A CN 201510270408A CN 104882837 A CN104882837 A CN 104882837A
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Abstract
The invention discloses an enclosed busbar micro-positive-pressure hot air maintenance apparatus, comprising a blower fan, an air heater, a control unit, a temperature sensor, a frequency converter, a full-control rectification circuit, air pressure sensors, a hot air inlet motorised valve and a hot air outlet motorised valve. Output of the blower fan is sent to an inlet of the hot air inlet motorised valve via the air heater. Outlets of the hot air inlet motorised valve are connected with hot air inlets of a three-phase enclosed busbar respectively. Hot air outlets of the three-phase enclosed busbar are connected with the hot air outlet motorised valve. The temperature sensor detects the temperature at the hot air outlet motorised valve and sends temperature signals to the control unit. The air pressure sensors detect air pressure in the enclosed busbar and send pressure value signals to the control unit. According to the apparatus provided by the invention, a small amount of heated air is used to continuously ensure the internal of the busbar is dry and in the positive pressure state after the enclosed busbar is subjected to drying maintenance, the energy consumption is low, the busbar is prevented from being affected with damp again, and the technical effect of rapid maintenance and stable drying is achieved.
Description
Technical field
The present invention relates to a kind of enclosed busbar, particularly relate to a kind of care device of enclosed busbar, belong to electrical equipment technical field.
Background technology
In order to prevent high pressure enclosed busbar internal condensation, affect its safe operation, current a lot of power plants enclosed busbar have employed enclosed busbar hot-air maintenance device and carries out bus internal moisture removal.Existing enclosed busbar hot-air maintenance device blows away moisture in bus with adding hot-air in a large number thus improve bus built-in electrical insulation performance, drives damp speed soon, good and cheap, uses a large amount of in the hydroelectric station the most easily made moist and peak load stations enclosed busbar.
Be the schematic diagram of existing enclosed busbar hot-air maintenance device as shown in Figure 1, its operation principle is: 1. blower fan is blown into air heater after first sucking air by first order filter screen.2. after heater heated air temperature is out sampled by thermal resistance, deliver to control section circuit, control circuit is according to required temperature value grouping control two groups of heaters work.3. the air after heating is sent into enclosed busbar by hot blast controlled valve manually after the strainer filtering of the second level.4. hot-air takes hot blast air outlet moisture out of from enclosed busbar.5. equipment needs manually to close hot wind inlet and outlet after complete shutdown is maintained in drying.
But the shortcoming of existing enclosed busbar hot-air maintenance device is: 1. need after drying manually to close hot-wind inlet and outlet, complex operation; 2., after maintenance terminates to shut down, the barotropic state of enclosed busbar inside cannot be maintained, can not the bus that prevent of continuous and effective make moist, there is bus again by the risk that external humidification invades.
Summary of the invention
The object of the present invention is to provide a kind of micro-positive pressure of enclosed busbar hot-air maintenance device, solving prior art can not the bus that prevent of continuous and effective make moist, and needs the technical problem of manually closing hot-wind inlet and outlet after drying.
Object of the present invention is achieved by the following technical programs:
A kind of micro-positive pressure of enclosed busbar hot-air maintenance device, comprises blower fan 1, air heater 2, control unit 3, temperature sensor 4, frequency converter 5, all controlled rectifier circuit 6, air pressure probe 7, hot wind inlet electrically operated valve 8, hot-blast outlet electrically operated valve 9, three-phase enclosed busbar is respectively equipped with hot wind inlet, hot-blast outlet, described blower fan 1 is by frequency converter 5 adjusting rotary speed, and described air heater 2 regulates operating current by all controlled rectifier circuit 6, described frequency converter 5, all controlled rectifier circuit 6, hot wind inlet electrically operated valve 8, hot-blast outlet electrically operated valve 9 is controlled by control unit 3, the entrance of hot wind inlet electrically operated valve 8 is delivered in the output of described blower fan 1 through air heater 2, the outlet of hot wind inlet electrically operated valve 8 connects the hot wind inlet of three-phase enclosed busbar respectively, the hot-blast outlet of described three-phase enclosed busbar connects hot-blast outlet electrically operated valve 9, described temperature sensor 4 detects the temperature at hot wind inlet electrically operated valve 8 place and temperature signal is delivered to control unit 3, and described air pressure probe 7 detects enclosed busbar inner air pressure and pressure value signal is delivered to control unit 3.
Object of the present invention can also be realized further by following technical measures:
Aforementioned micro-positive pressure of enclosed busbar hot-air maintenance device, also comprise first order filter screen 10, second level filter screen 11, described first order filter screen 10 is positioned at the air inlet of blower fan 1, and described second level filter screen 11 is positioned at the entrance of hot wind inlet electrically operated valve 8.
Aforementioned micro-positive pressure of enclosed busbar hot-air maintenance device, also comprises emissions valve 12, and described emissions valve 12 is positioned in the bypass of entrance side pipeline of hot wind inlet electrically operated valve 8.
Aforementioned micro-positive pressure of enclosed busbar hot-air maintenance device, wherein temperature sensor 4 is thermal resistances.
Aforementioned micro-positive pressure of enclosed busbar hot-air maintenance device, wherein temperature sensor 4 is thermocouples.
Compared with prior art, the invention has the beneficial effects as follows:
Continue to ensure the inner dry barotropic state of bus with little tolerance heating air after to enclosed busbar drying maintenance, consume energy low, avoid bus secondary and make moist, reach maintenance fast and stable dry technique effect.
Accompanying drawing explanation
Fig. 1 is the structure chart of existing enclosed busbar hot-air maintenance device;
Fig. 2 is system construction drawing of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 2, micro-positive pressure of enclosed busbar hot-air maintenance device comprises blower fan 1, air heater 2, control unit 3, temperature sensor 4, frequency converter 5, all controlled rectifier circuit 6, air pressure probe 7, hot wind inlet electrically operated valve 8, hot-blast outlet electrically operated valve 9, first order filter screen 10, second level filter screen 11, emissions valve 12, three-phase enclosed busbar is respectively equipped with hot wind inlet, hot-blast outlet, described blower fan 1 is by frequency converter 5 adjusting rotary speed, and described air heater 2 regulates operating current by all controlled rectifier circuit 6, described frequency converter 5, all controlled rectifier circuit 6, hot wind inlet electrically operated valve 8, hot-blast outlet electrically operated valve 9 is controlled by control unit 3, the entrance of hot wind inlet electrically operated valve 8 is delivered in the output of described blower fan 1 through air heater 2, the outlet of hot wind inlet electrically operated valve 8 connects the hot wind inlet of three-phase enclosed busbar respectively, the hot-blast outlet of described three-phase enclosed busbar connects hot-blast outlet electrically operated valve 9, described temperature sensor 4 detects the temperature at hot wind inlet electrically operated valve 8 place and temperature signal is delivered to control unit 3, and described air pressure probe 7 detects enclosed busbar inner air pressure and pressure value signal is delivered to control unit 3.Described first order filter screen 10 is positioned at the air inlet of blower fan 1, and described second level filter screen 11 is positioned at the entrance of hot wind inlet electrically operated valve 8.Described emissions valve 12 is positioned in the bypass of entrance side pipeline of hot wind inlet electrically operated valve 8.Described temperature sensor 4 is thermal resistances.
Secondary moisture after micro-positive pressure of enclosed busbar hot-air maintenance device of the present invention solves the shutdown of traditional enclosed busbar hot-air maintenance device maintenance bus invades problem.Device is provided with the automatic valve of hot-wind inlet and outlet, is provided with the transducer detecting bus internal pressure, adds and controls the frequency converter of rotation speed of fan and all controlled rectifier circuit of control heater.
Large heat and Wind Volume rapid dry bus is first used during the work of this device, automatically hot-blast outlet is closed after drying, then equipment enters slight positive pressure state, Frequency Converter Control blower fan is to suitable rotating speed, control unit regulates all controlled rectifier circuit to reduce heater to suitable heating power, air pressure probe detects the pressure in bus and feeds back to control unit, and control unit controls blower fan to maintain the inner certain barotropic state of bus, and such external humidification just cannot invade enclosed busbar.
This device course of work is specially: 1. blower fan is blown into air heater after first sucking air by first order filter screen.2. after heater heated air temperature value is out sampled by thermal resistance, deliver to control section circuit, control circuit is by controlling all controlled rectifier circuit control heater operating power.3. the air after heating is sent into enclosed busbar by after the strainer filtering of the second level by hot wind inlet electrically operated valve.4. hot-air takes hot blast air outlet moisture out of from enclosed busbar, so just first by being blown into bus adding hot-air in a large number, takes away the moisture of bus inside fast.5. after drying, control unit controls automatically to close hot-blast outlet electrically operated valve, automatically reduces rotation speed of fan and reduce heater power equipment to make equipment enter slight positive pressure state.6. equipment obtains bus internal pressure value by constantly detecting bus pressure sensor, control fan delivery and heater heat guarantee that bus inner sustain is in certain positive pressuring drying state, such external humidification just cannot invade enclosed busbar, avoids bus secondary to make moist.
The problem that fundamentally can solve the rear bus secondary of original enclosed busbar hot-air maintenance device maintenance and make moist of the present invention, namely enclosed busbar hot-air maintenance device Wind Volume hot blast can be utilized to carry out rapid draing maintenance to enclosed busbar fast, the problem preventing external humidification and dust from invading can be reached again after maintenance, simultaneity factor automation and collection control operation level improve greatly, greatly reduce personnel labor intensity and system safety performance.
In addition to the implementation, the present invention 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 application claims.
Claims (5)
1. a micro-positive pressure of enclosed busbar hot-air maintenance device, it is characterized in that, comprise blower fan (1), air heater (2), control unit (3), temperature sensor (4), frequency converter (5), all controlled rectifier circuit (6), air pressure probe (7), hot wind inlet electrically operated valve (8), hot-blast outlet electrically operated valve (9), three-phase enclosed busbar is respectively equipped with hot wind inlet, hot-blast outlet, described blower fan (1) is by frequency converter (5) adjusting rotary speed, described air heater (2) regulates operating current by all controlled rectifier circuit (6), described frequency converter (5), all controlled rectifier circuit (6), hot wind inlet electrically operated valve (8), hot-blast outlet electrically operated valve (9) is controlled by control unit (3), the entrance of hot wind inlet electrically operated valve (8) is delivered in the output of described blower fan (1) through air heater (2), the outlet of hot wind inlet electrically operated valve (8) connects the hot wind inlet of three-phase enclosed busbar respectively, the hot-blast outlet of described three-phase enclosed busbar connects hot-blast outlet electrically operated valve (9), described temperature sensor (4) detects the temperature at hot wind inlet electrically operated valve (8) place and temperature signal is delivered to control unit (3), described air pressure probe (7) detects enclosed busbar inner air pressure and pressure value signal is delivered to control unit (3).
2. micro-positive pressure of enclosed busbar hot-air maintenance device as claimed in claim 1, it is characterized in that, also comprise first order filter screen (10), second level filter screen (11), described first order filter screen (10) is positioned at the air inlet of blower fan (1), and described second level filter screen (11) is positioned at the entrance of hot wind inlet electrically operated valve (8).
3. micro-positive pressure of enclosed busbar hot-air maintenance device as claimed in claim 1, it is characterized in that, also comprise emissions valve (12), described emissions valve (12) is positioned in the bypass of the entrance side pipeline of hot wind inlet electrically operated valve (8).
4. micro-positive pressure of enclosed busbar hot-air maintenance device as claimed in claim 1, it is characterized in that, described temperature sensor (4) is thermal resistance.
5. micro-positive pressure of enclosed busbar hot-air maintenance device as claimed in claim 1, it is characterized in that, described temperature sensor (4) is thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510270408.5A CN104882837A (en) | 2015-05-25 | 2015-05-25 | Enclosed busbar micro-positive-pressure hot air maintenance apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510270408.5A CN104882837A (en) | 2015-05-25 | 2015-05-25 | Enclosed busbar micro-positive-pressure hot air maintenance apparatus |
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| Publication Number | Publication Date |
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| CN104882837A true CN104882837A (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510270408.5A Pending CN104882837A (en) | 2015-05-25 | 2015-05-25 | Enclosed busbar micro-positive-pressure hot air maintenance apparatus |
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| CN (1) | CN104882837A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762737A (en) * | 2016-04-11 | 2016-07-13 | 北京良乡昊融电力设备有限公司 | Micro-positive pressure system for separated-phase enclosed busbar and micro-positive pressure implementation method |
| CN112944879A (en) * | 2021-02-02 | 2021-06-11 | 大唐贵州发耳发电有限公司 | Remove damp device to hot-blast insulation of box enclosed bus is altogether removed damp to high pressure |
| CN115333054A (en) * | 2022-10-13 | 2022-11-11 | 山东达驰阿尔发电气有限公司 | Closed bus state controller |
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| CN2571045Y (en) * | 2002-09-24 | 2003-09-03 | 镇江华东电力设备制造厂 | Isolated phase bus air circulation drying apparatus |
| CN200953451Y (en) * | 2005-09-22 | 2007-09-26 | 牡丹江市龙源电力设备有限公司 | Closed bus-bar micro-positive voltage controller |
| CN201781248U (en) * | 2010-08-20 | 2011-03-30 | 镇江华东电力设备制造厂 | Hot-air maintenance device for isolated phase buses |
| CN201838959U (en) * | 2010-08-20 | 2011-05-18 | 镇江华东电力设备制造厂 | Anti-condensation drying system of isolated-phase enclosed busbar |
| CN202586220U (en) * | 2012-05-09 | 2012-12-05 | 北京电力设备总厂 | Anti-condensation device for enclosed busbar |
| CN202648356U (en) * | 2012-06-28 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Closed type circulating drying system for isolated phase enclosed bus |
| CN202887030U (en) * | 2012-09-12 | 2013-04-17 | 江苏大全封闭母线有限公司 | Condensation-prevention device for enclosed bus |
| CN203339608U (en) * | 2013-06-18 | 2013-12-11 | 中国能源建设集团镇江华东电力设备制造厂 | An enclosed type refrigeration circulating drying apparatus of enclosed isolated-phase buses |
| CN203660463U (en) * | 2013-12-26 | 2014-06-18 | 镇江市高等专科学校 | Micro-positive pressure circulating drying device for enclosed busbars |
| CN204668874U (en) * | 2015-05-25 | 2015-09-23 | 镇江市高等专科学校 | Micro-positive pressure of enclosed busbar hot-air maintenance device |
-
2015
- 2015-05-25 CN CN201510270408.5A patent/CN104882837A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571045Y (en) * | 2002-09-24 | 2003-09-03 | 镇江华东电力设备制造厂 | Isolated phase bus air circulation drying apparatus |
| CN200953451Y (en) * | 2005-09-22 | 2007-09-26 | 牡丹江市龙源电力设备有限公司 | Closed bus-bar micro-positive voltage controller |
| CN201781248U (en) * | 2010-08-20 | 2011-03-30 | 镇江华东电力设备制造厂 | Hot-air maintenance device for isolated phase buses |
| CN201838959U (en) * | 2010-08-20 | 2011-05-18 | 镇江华东电力设备制造厂 | Anti-condensation drying system of isolated-phase enclosed busbar |
| CN202586220U (en) * | 2012-05-09 | 2012-12-05 | 北京电力设备总厂 | Anti-condensation device for enclosed busbar |
| CN202648356U (en) * | 2012-06-28 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Closed type circulating drying system for isolated phase enclosed bus |
| CN202887030U (en) * | 2012-09-12 | 2013-04-17 | 江苏大全封闭母线有限公司 | Condensation-prevention device for enclosed bus |
| CN203339608U (en) * | 2013-06-18 | 2013-12-11 | 中国能源建设集团镇江华东电力设备制造厂 | An enclosed type refrigeration circulating drying apparatus of enclosed isolated-phase buses |
| CN203660463U (en) * | 2013-12-26 | 2014-06-18 | 镇江市高等专科学校 | Micro-positive pressure circulating drying device for enclosed busbars |
| CN204668874U (en) * | 2015-05-25 | 2015-09-23 | 镇江市高等专科学校 | Micro-positive pressure of enclosed busbar hot-air maintenance device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762737A (en) * | 2016-04-11 | 2016-07-13 | 北京良乡昊融电力设备有限公司 | Micro-positive pressure system for separated-phase enclosed busbar and micro-positive pressure implementation method |
| CN105762737B (en) * | 2016-04-11 | 2018-07-17 | 北京良乡昊融电力设备有限公司 | A kind of the micro-positive pressure system and micro-positive pressure implementation method of isolated-phase enclosed bus |
| CN112944879A (en) * | 2021-02-02 | 2021-06-11 | 大唐贵州发耳发电有限公司 | Remove damp device to hot-blast insulation of box enclosed bus is altogether removed damp to high pressure |
| CN115333054A (en) * | 2022-10-13 | 2022-11-11 | 山东达驰阿尔发电气有限公司 | Closed bus state controller |
| CN115333054B (en) * | 2022-10-13 | 2023-01-24 | 山东达驰阿尔发电气有限公司 | Closed bus state controller |
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Application publication date: 20150902 |
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| RJ01 | Rejection of invention patent application after publication |