CN204668874U - Micro-positive pressure of enclosed busbar hot-air maintenance device - Google Patents
Micro-positive pressure of enclosed busbar hot-air maintenance device Download PDFInfo
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- CN204668874U CN204668874U CN201520341746.9U CN201520341746U CN204668874U CN 204668874 U CN204668874 U CN 204668874U CN 201520341746 U CN201520341746 U CN 201520341746U CN 204668874 U CN204668874 U CN 204668874U
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- hot
- electrically operated
- operated valve
- enclosed busbar
- air
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Abstract
The utility model discloses a kind of micro-positive pressure of enclosed busbar hot-air maintenance device, comprise blower fan, air heater, control unit, temperature sensor, frequency converter, all controlled rectifier circuit, air pressure probe, hot wind inlet electrically operated valve, hot-blast outlet electrically operated valve, the entrance of hot wind inlet electrically operated valve is delivered in the output of described blower fan through air heater, the outlet of hot wind inlet electrically operated valve 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, described temperature sensor detects the temperature at hot wind inlet electrically operated valve place and temperature signal is delivered to control unit, described air pressure probe detects enclosed busbar inner air pressure and pressure value signal is delivered to control unit.The utility model continues to ensure the inner dry barotropic state of bus with little tolerance heating air after to enclosed busbar drying maintenance, consumes energy low, avoids bus secondary and make moist, reach maintenance fast and stable dry technique effect.
Description
Technical field
The utility model relates to a kind of enclosed busbar, particularly relates to a kind of care device of enclosed busbar, belongs 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 structure chart 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.
Utility model content
The purpose of this utility model is to provide a kind of micro-positive pressure of enclosed busbar hot-air maintenance device, and 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.
The purpose of this utility model 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.
The purpose of this utility model 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 beneficial effects of the utility model are:
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 utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
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 utility model 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 utility model, 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 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 (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 |
|---|---|---|---|
| CN201520341746.9U CN204668874U (en) | 2015-05-25 | 2015-05-25 | Micro-positive pressure of enclosed busbar hot-air maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520341746.9U CN204668874U (en) | 2015-05-25 | 2015-05-25 | Micro-positive pressure of enclosed busbar hot-air maintenance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668874U true CN204668874U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520341746.9U Expired - Fee Related CN204668874U (en) | 2015-05-25 | 2015-05-25 | Micro-positive pressure of enclosed busbar hot-air maintenance device |
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| CN (1) | CN204668874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-05-25 CN CN201520341746.9U patent/CN204668874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20210525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |