CN202373935U - Anti-condensation drying system for enclosed busbar - Google Patents
Anti-condensation drying system for enclosed busbar Download PDFInfo
- Publication number
- CN202373935U CN202373935U CN2011205260971U CN201120526097U CN202373935U CN 202373935 U CN202373935 U CN 202373935U CN 2011205260971 U CN2011205260971 U CN 2011205260971U CN 201120526097 U CN201120526097 U CN 201120526097U CN 202373935 U CN202373935 U CN 202373935U
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- drying chamber
- enclosed busbar
- valve
- drying
- pressure
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Abstract
The utility model discloses an anti-condensation drying system for an enclosed busbar. The anti-condensation drying system for the enclosed busbar comprises a slight positive pressure device and a hot air maintenance device, wherein the slight positive pressure device comprises drying tanks I and II in which a desiccant is placed, and one end of a solenoid valve is connected with an air inlet pipe; the other end of the solenoid valve is connected with an air inlet end of a water-separating gas filter, and an air outlet end of the water-separating gas filter is connected with one end of a pressure regulating valve and the bottom of the drying tank I; the other end of the pressure regulating valve is connected with the bottom of the drying tank II, and two-position three-way pneumatic solenoid valves are arranged between the drying tank I and the air outlet end of the water-separating gas filter and between the drying tank II and the pressure regulating valve; the tops of the drying tanks I and II are communicated, and the drying tanks I and II are commonly connected with an air inlet pipeline of the enclosed busbar; a pressure transmitter is connected onto an air return pipe, and a signal output terminal of the pressure transmitter is connected with a control coil of the solenoid valve; and the control coils of the two-position three-way pneumatic solenoid valves are connected with a contact switch of a time relay in series. The anti-condensation drying system for the enclosed busbar has the beneficial effects that the manufacturing cost is lower, the maintenance is simple and convenient, and the operation is convenient.
Description
Technical field
The utility model relates to the anti-condensation drying system of a kind of enclosed busbar.
Background technology
Conventional isolated phase bus stop in the generator during maintenance, enclosed bus system due to heat from running state gradually become cold state can easily place in a sealed bulkhead condensation, the temperature of the air inside the bus drop creates a vacuum, so the surrounding base on environment is easy to dust and moisture intrusion into enclosed bus enclosure, especially in face of rain or dust in the humid tropics, this invasion is even more obvious.This brings influence not only for the inner cleaning of enclosed busbar, the more important thing is that they will reduce the insulaion resistance intensity of enclosed busbar, even industrial frequency withstand voltage does not add sometimes, and normally starter-generator brings hidden danger for the operation in power plant.
Traditional cold dry type pressure-fired and hot blast care device are to lean on cooling driers system to carry out the freezing type drying, and sealing is female
Line is that heater produces dewfall easily at the plotted point place when operation, causes the enclosed busbar operation to have potential safety hazard.And enter into enclosed busbar inside owing to many reasons cause the bus external humidification, and reducing the insulation resistance intensity of enclosed busbar, this is that traditional cold dry type pressure-fired device is insurmountable.Add traditional pressure-fired device and adopt cooling driers to carry out drying, and present domestic cooling driers manufacturing technology and immature needs from external import, thereby cause maintenance difficult and fittings cost high.
Summary of the invention
Be technical deficiency more than solving, the utility model provides a kind of cost low, and effective enclosed busbar is prevented the condensation drying system.
The utility model is realized through following measure:
A kind of enclosed busbar of the utility model is prevented the condensation drying system, comprises pressure-fired device and hot blast maintenance dress
Put; Said pressure-fired device comprises air inlet pipe, muffler, electromagnetically operated valve, water-separating gas filter, pressure regulating valve and inner drying chamber I and the drying chamber II that all is placed with drier; Said electromagnetically operated valve one end connects air inlet pipe; The other end connects the inlet end of water-separating gas filter, and the outlet side of water-separating gas filter connects an end and the drying chamber I bottom of pressure regulating valve, and the other end of pressure regulating valve connects drying chamber II bottom; All be connected with the two-bit triplet air-operated solenoid valve between the outlet side of drying chamber I and water-separating gas filter and between drying chamber II and the pressure regulating valve; The drying chamber I is communicated with and is connected jointly enclosed busbar shell air inlet pipeline with drying chamber II top, said muffler connects enclosed busbar shell return line, is connected with pressure transmitter on the muffler; Said pressure transmitter signal output part connects the control coil of electromagnetically operated valve, and the control coil of said two-bit triplet air-operated solenoid valve is in series with the contact switch of the time relay.
Above-mentioned drying chamber I and the place of being connected, drying chamber II top are provided with flow-limiting valve, and drying chamber I and drying chamber II bottom are connected with muffler.
Be provided with safety valve and manual ball valve on the above-mentioned muffler.
The beneficial effect of the utility model is:
1. contrast cold dry type pressure-fired device, the enclosed busbar of the utility model is prevented condensation drying system manufacturing cost
Lower, easy maintenance is convenient to operation.
2. get rid of inner moisture through two drying chamber circulations, can solve condensation trouble preferably, avoided tradition
Cold dry type pressure-fired device enclosed busbar when operation heater produce dewfall at the plotted point place, influence the fail safe of bus.
3. the moisture of having avoided many reasons to cause enters into enclosed busbar inside, can not reduce the insulation resistance intensity of enclosed busbar.
Description of drawings
Fig. 1 is the structural representation of the pressure-fired device of the utility model.
Fig. 2 is the schematic diagram that is electrically connected of the utility model.
Among the figure: 1 air inlet pipe, 2 electromagnetically operated valve YV, 3 water-separating gas filters, 4 pressure regulating valves, 5 two-bit triplet air-operated solenoid valves, 6 drying chamber II, 7 drying chamber I, 8 flow-limiting valves, 9 safety valves, 10 pressure transmitters, 11 mufflers, 12 manual ball valves.
Embodiment
Like Fig. 1, shown in 2, a kind of enclosed busbar of the utility model is prevented the condensation drying system, comprises pressure-fired
Device and hot blast care device; The pressure-fired device comprises air inlet pipe 1, muffler 11, electromagnetically operated valve, water-separating gas filter 3, pressure regulating valve 4 and inner drying chamber I 7 and the drying chamber II 6 that all is placed with drier; Electromagnetically operated valve one end connects air inlet pipe 1; The other end connects the inlet end of water-separating gas filter 3, and the outlet side of water-separating gas filter 3 connects an end and drying chamber I 7 bottoms of pressure regulating valve 4, and the other end of pressure regulating valve 4 connects drying chamber II 6 bottoms; All be connected with two-bit triplet air-operated solenoid valve 5 between the outlet side of drying chamber I 7 and water-separating gas filter 3 and between drying chamber II 6 and the pressure regulating valve 4; Drying chamber I 7 is communicated with and is connected jointly enclosed busbar shell air inlet pipe 1 tunnel with drying chamber II 6 tops, muffler 11 connects enclosed busbar shell muffler 11 tunnel, is connected with pressure transmitter 10 on the muffler 11; Pressure transmitter 10 signal output parts connect the control coil of electromagnetically operated valve, and the control coil of two-bit triplet air-operated solenoid valve 5 is in series with the contact switch of the time relay.Drying chamber I 7 is provided with flow-limiting valve 8 with the place of being connected, drying chamber II 6 top, and drying chamber I 7 is connected with muffler with drying chamber II 6 bottoms.Be provided with safety valve 9 and manual ball valve 12 on the muffler 11.
Its operation principle is:
Compressed air from source of the gas gets into from air inlet pipe 1; Get into water-separating gas filter 3 through the electromagnetically operated valve YV2 in the cabinet then; Separate the airborne globule by water-separating gas filter 3; Get into drying chamber I 7 or drying chamber II 6 then,, and get into space in the enclosed busbar from enclosed busbar shell air inlet pipe 1 tunnel because the suction-operated of drying chamber internal desiccant is purified with further dry air.
Because drying chamber of long-term use; The suction-operated that can make jar internal desiccant because of the moisture absorption satisfy close ineffective; So the utility model adopts two drying chambers, in drying chamber I 7 and drying chamber II 6 bottoms two-bit triplet air-operated solenoid valve YA1, two-bit triplet air-operated solenoid valve YA2 are housed, two-bit triplet air-operated solenoid valve 5 is controlled by time relay KT; During normal the operation; A two-bit triplet air-operated solenoid valve 5 is opened, and another two-bit triplet air-operated solenoid valve 5 is closed, thereby makes the middle inflation in enclosed busbar of one of them drying chamber.In a drying chamber is in enclosed busbar, ventilate to another drying chamber through flow-limiting valve 8 in the inflation; Another drying chamber then through jar under muffler discharge the gas of minute quantity; Discharge the moisture effect thereby play, one-in-and-one-out hockets moisture absorption and dry run all the time between such two drying chambers.The dew point of handling back gas is lower than-40 oC, handles back gas and contains the dust diameter: < 0.05mm.
When the pressure-fired in the bus reaches setting (during higher limit), pressure transmitter 10 detected pressures signals are also controlled electromagnetically operated valve YV2 and are closed, and realize stopping air feed.Because the enclosed busbar body leaks when making the bus shell inner air pressure reduce to lower limit, and electromagnetically operated valve YV2 is opened, and resets work.
The hot blast care device is that air heater via with pressure is absorbed certain heat and gets into space in the enclosed busbar, advances terminal the discharge from head end.Its temperature realizes intelligent automatic control by the upper lower limit value of on intelligent control unit, setting.
Because this device cooperates the sealing voluntarily of bus; During generator outage; And when running into the heavy weather condition, this device charges into clean air or the hot blast through dry filter in enclosed busbar, makes the bus enclosure interior possess atmospheric pressure (300pa ~ 2500pa) to prevent the intrusion of external dust and moisture; Keep enclosed busbar inner cleaning and drying., thus the insulation resistance intensity of assurance enclosed busbar.This device can be measured automatically and control the air pressure and the temperature that charge in the enclosed busbar shell automatically.
The foregoing description is said to be in order to specify this patent; Though describe through specific term in the literary composition; But can not limit the protection range of this patent with this; The personage who is familiar with this technical field can change or revise it after the spirit of understanding this patent and principle and reach equivalent purpose, and this equivalence change and modification all should be covered by the claim scope and define in the category.
Claims (3)
1. an enclosed busbar is prevented the condensation drying system; Comprise pressure-fired device and hot blast care device; It is characterized in that: said pressure-fired device comprises air inlet pipe, muffler, electromagnetically operated valve, water-separating gas filter, pressure regulating valve and inner drying chamber I and the drying chamber II that all is placed with drier; Said electromagnetically operated valve one end connects air inlet pipe; The other end connects the inlet end of water-separating gas filter, and the outlet side of water-separating gas filter connects an end and the drying chamber I bottom of pressure regulating valve, and the other end of pressure regulating valve connects drying chamber II bottom; All be connected with the two-bit triplet air-operated solenoid valve between the outlet side of drying chamber I and water-separating gas filter and between drying chamber II and the pressure regulating valve; The drying chamber I is communicated with and is connected jointly enclosed busbar shell air inlet pipeline with drying chamber II top, said muffler connects enclosed busbar shell return line, is connected with pressure transmitter on the muffler; Said pressure transmitter signal output part connects the control coil of electromagnetically operated valve, and the control coil of said two-bit triplet air-operated solenoid valve is in series with the contact switch of the time relay.
2. enclosed busbar according to claim 1 is prevented the condensation drying system, it is characterized in that: said drying chamber I and the place of being connected, drying chamber II top are provided with flow-limiting valve, and drying chamber I and drying chamber II bottom are connected with muffler.
3. enclosed busbar according to claim 1 is prevented the condensation drying system, it is characterized in that: be provided with safety valve and manual ball valve on the said muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205260971U CN202373935U (en) | 2011-12-16 | 2011-12-16 | Anti-condensation drying system for enclosed busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205260971U CN202373935U (en) | 2011-12-16 | 2011-12-16 | Anti-condensation drying system for enclosed busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202373935U true CN202373935U (en) | 2012-08-08 |
Family
ID=46597626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205260971U Expired - Fee Related CN202373935U (en) | 2011-12-16 | 2011-12-16 | Anti-condensation drying system for enclosed busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202373935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375419A (en) * | 2015-10-27 | 2016-03-02 | 国家电网公司 | Intelligent micro positive pressure system |
| CN110530930A (en) * | 2019-09-12 | 2019-12-03 | 凯迈（洛阳）气源有限公司 | A kind of quick dew point measurement device |
-
2011
- 2011-12-16 CN CN2011205260971U patent/CN202373935U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375419A (en) * | 2015-10-27 | 2016-03-02 | 国家电网公司 | Intelligent micro positive pressure system |
| CN110530930A (en) * | 2019-09-12 | 2019-12-03 | 凯迈（洛阳）气源有限公司 | A kind of quick dew point measurement device |
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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: 20120808 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |