CN200953451Y - Closed bus-bar micro-positive voltage controller - Google Patents
Closed bus-bar micro-positive voltage controller Download PDFInfo
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- CN200953451Y CN200953451Y CN 200520122648 CN200520122648U CN200953451Y CN 200953451 Y CN200953451 Y CN 200953451Y CN 200520122648 CN200520122648 CN 200520122648 CN 200520122648 U CN200520122648 U CN 200520122648U CN 200953451 Y CN200953451 Y CN 200953451Y
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- automatically controlled
- electromagnetically operated
- operated valves
- valve
- controlled electromagnetically
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Abstract
A pressurized control device for enclosed bus is provided, which takes compressed air as the gas source and makes the air in the bus dry and clean through frozen drier and precise filter. With the double functions of pressurized operation and timed air charging, the utility model is applicable to all enclosed buses. Air charging is under the control of double-electromagnetic valve with the memory function. Three different protection functions are provided to avoid the over-pressure of enclosed buses and ensure the safe and reliable operation of equipment and the normal startup and working of power generators.
Description
Affiliated technical field
The utility model relates to a kind of enclosed busbar protective device, belongs to power equipment.
Background technology
At present, the enclosed busbar protection equipment of using in power plant has two types: one is a circulation drier.It two is an inflator.The former adopts the molecular sieve drying air, air pump circulation, because pressure is low, and can not secondary filter to air, dust still can enter enclosed busbar, influence bus insulation and dead angle in addition.The latter still adopts the molecular sieve drying air, and two drying chambers are used alternatingly, because its volume is less, and the electromagnetically operated valve frequent movement, failure rate is high, and is perfect not to the utmost to the enclosed busbar overvoltage protection.
Summary of the invention
In order to satisfy the electric field actual needs, overcome the deficiency of existing equipment, the utility model provides a kind of brand-new enclosed busbar protective device.The air cleaning index is dust granules 0.01 μ m, oil content 0.1mg/m
3, the air drought index is a pressure leak source (0-3) ℃.The utlity model has two kinds of functions,, adopt pressurized operation when the enclosed busbar air-tightness meets GB (GB/T8349-2000) when requiring, when air-tightness seriously descends, can adopt regularly aerification function in the time of can't setting up pressure-fired, therefore, the utility model is fit to all enclosed busbars.The utility model is applied to the double control electromagnetic valve in the ventilating control, and has solved the technical barrier of outage pass valve.The utlity model has three kinds of defencive functions, prevent the enclosed busbar overvoltage.
The technical scheme that its technical problem that solves the utility model adopts is: this enclosed busbar pressure-fired control device, mainly form by pipe fitting and electrical connection by two automatically controlled electromagnetically operated valves (5), cooling driers (7), safety valve (12), (13), little mist separator (8), pressure sensor (11) and electric cabinet (15).(A) of two automatically controlled electromagnetically operated valves (5) mouthful is connected with the inlet of cooling driers (7), the outlet of cooling driers (7) is connected with (B) mouth of two automatically controlled electromagnetically operated valves (5) by unidirectional valve, (C) of two automatically controlled electromagnetically operated valves (5) mouthful is connected with muffler (6), (P) of two automatically controlled electromagnetically operated valves (5) mouthful is communicated with source of the gas by main line filter (4), and (D) of two automatically controlled electromagnetically operated valves (5) mouthful is communicated with enclosed busbar (14) by little mist separator (8), speed-regulating valve (10).Like this with regard to realized with cooling driers dehumidify to charging into air in the enclosed busbar, drying, finish ventilating control with two automatically controlled electromagnetically operated valves, can when stopping to inflate, the compressed air in the cooling driers be drained again simultaneously, guarantee the normal running conditions of cooling driers.Two automatically controlled electromagnetically operated valves have memory function, and unexpected power failure then can not be closed when inflation, and is easily accidents caused.The utility model utilizes capacitor-discharge, and capacitor discharge is closed two automatically controlled electromagnetically operated valves during outage.Exhaust solenoid valve is connected with enclosed busbar by gas-filled tube, and pilot safety valve is connected with enclosed busbar by probe tube with mechanical safety valve.Electromagnetically operated valve exhaust when the pressure in the enclosed busbar reaches 3000Pa, pilot safety valve pressure release during 3500Pa, mechanical safety valve exhaust pressure relief during 10KPa.
The beneficial effects of the utility model are, for electric power system provides a kind of novel block protection equipment for busbar, this device is employed new technology, new material, new technology, make device have stable performance, reliable, safeguard characteristics such as simple and easy, energy-efficient.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is a schematic circuit of the present utility model
Fig. 2 is that the valve electrical schematic diagram is closed in outage of the present utility model
Among the figure 1, ball valve, 2, unidirectional valve, 3, Pressure gauge, 4, main line filter, 5, two automatically controlled electromagnetically operated valve, 6, muffler, 7, cooling driers, 8 little mist separators, 9 exhaust solenoid valves, 10, speed-regulating valve, 11, pressure sensor, 12, pilot safety valve, 13, mechanical safety valve, 14, enclosed busbar, 15, electric cabinet, 16 pairs of automatically controlled electromagnetically operated valves are opened end-coils, and 17, two automatically controlled closed electromagnetic valve end-coil, 18, energy-storing device.
Embodiment
Compressed air enters main line filter (4) through ball valve (1) in Fig. 1, remove the above dust of 4 μ m, enter cooling driers (7) drying and dehydrating by two automatically controlled electromagnetically operated valves (5), and then enter little mist separator (8) by two automatically controlled electromagnetically operated valves (5), air quality further improves, reach below the dust granules 0.01 μ m, enter enclosed busbar (14) by speed-regulating valve (10) at last.Electromagnetically operated valve (9), pilot safety valve (12), unidirectional valve (13) are used for overvoltage protection.Ventilating control is realized by electric cabinet (15), when pressure sensor (11) detects pressure in the bus (14)≤500Pa, open two automatically controlled electromagnetically operated valves (6) and begin inflation, when the pressure in the bus (14) reaches 1500Pa, close two automatically controlled electromagnetically operated valves (7) and stop inflation and carry out pressurize.
On the panel of electric cabinet (15), establish a change over switch, can select pressurized operation still regularly to inflate working method.
In Fig. 2, when normal power supply, KM6 is in off-state all the time.During inflation, disconnect immediately after the KM1 closure, closing time 〉=0.1S, two automatically controlled electromagnetically operated valves unlatching end-coils (16) must be established by cable and open.When the pressure in the bus reaches setting pressure 1500Pa, disconnect immediately after the KM2 closure, closing time 〉=0.1S, two automatically controlled closed electromagnetic valve end-coils (17) get electric closing, and finish gas replenishment process one time.When sudden power for a certain reason, if be in inflated condition, there is not energy-storing device of the present utility model, can't stop inflation, can produce adverse consequences.C1, C2 all adopt 100 μ f/50v electrochemical capacitor, J= cu as calculated in the energy-storing device (18)
2Be 1.44J, and two automatically controlled electromagnetic valve coil rated current is 83mA, satisfies the energy that closes valve.D1 is for preventing shunting, and R1 limits discharging current simultaneously for proper extension discharge time.KM6 is closure when outage only, and energy-storing device (18) is linked into two automatically controlled closed electromagnetic valve end-coils (17), realizes the purpose of charge closing electromagnetically operated valve.
Claims (2)
1. enclosed busbar pressure-fired control device, mainly by two automatically controlled electromagnetically operated valves (5), cooling driers (7), safety valve (12), (13), little mist separator (8), pressure sensor (11) and electric cabinet (15) are by pipe fitting and be electrically connected composition, it is characterized in that: (A) of two automatically controlled electromagnetically operated valves (5) mouthful is connected with the inlet of cooling driers (7), the outlet of cooling driers (7) is connected with (B) mouth of two automatically controlled electromagnetically operated valves (5) by unidirectional valve, (C) of two automatically controlled electromagnetically operated valves (5) mouthful is connected with muffler (6), (P) of two automatically controlled electromagnetically operated valves (5) mouthful is communicated with source of the gas by main line filter (4), and (D) of two automatically controlled electromagnetically operated valves (5) mouthful by little mist separator (8), speed-regulating valve (10) is communicated with enclosed busbar (14).
2. according to right 1 described control device, it is characterized in that: exhaust solenoid valve (9) is communicated with enclosed busbar (14) by speed-regulating valve (10) and gas-filled tube, and liquid safe valve (12), mechanical safety valve (13) are communicated with enclosed busbar (14) by probe tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122648 CN200953451Y (en) | 2005-09-22 | 2005-09-22 | Closed bus-bar micro-positive voltage controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122648 CN200953451Y (en) | 2005-09-22 | 2005-09-22 | Closed bus-bar micro-positive voltage controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953451Y true CN200953451Y (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520122648 Expired - Fee Related CN200953451Y (en) | 2005-09-22 | 2005-09-22 | Closed bus-bar micro-positive voltage controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200953451Y (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 |
| CN103457211A (en) * | 2013-07-02 | 2013-12-18 | 大唐黑龙江发电有限公司哈尔滨第一热电厂 | Micro positive pressure device of 30MW generator enclosed busbar and working method of micro positive pressure device |
| 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 |
| CN105914682A (en) * | 2016-06-27 | 2016-08-31 | 大唐淮北发电厂 | Anti-condensation method and device for enclosed busbar of hydrogen-cooled generator |
-
2005
- 2005-09-22 CN CN 200520122648 patent/CN200953451Y/en not_active Expired - Fee Related
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 |
| CN103457211A (en) * | 2013-07-02 | 2013-12-18 | 大唐黑龙江发电有限公司哈尔滨第一热电厂 | Micro positive pressure device of 30MW generator enclosed busbar and working method of micro positive pressure device |
| 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 |
| CN105914682A (en) * | 2016-06-27 | 2016-08-31 | 大唐淮北发电厂 | Anti-condensation method and device for enclosed busbar of hydrogen-cooled generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Mudanjiang City Longyuan Electric Equipment Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Feng Baoyin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20130922 |