CN202586220U - Anti-condensation device for enclosed busbar - Google Patents
Anti-condensation device for enclosed busbar Download PDFInfo
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- CN202586220U CN202586220U CN 201220207165 CN201220207165U CN202586220U CN 202586220 U CN202586220 U CN 202586220U CN 201220207165 CN201220207165 CN 201220207165 CN 201220207165 U CN201220207165 U CN 201220207165U CN 202586220 U CN202586220 U CN 202586220U
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- enclosed busbar
- air
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- bus
- condensation device
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Abstract
The utility model discloses an anti-condensation device for an enclosed busbar. The anti-condensation device comprises an air filtering and drying system, a control system, an air supplying pipeline and an air return pipeline. The enclosed busbar comprises three phase busbars arranged parallelly. The air supplying pipeline includes a first air supplying pipeline and a second air supplying pipeline. One end of the first air supplying pipeline is communicated with the output end of the air filtering and drying system, and the other end of the first air supplying pipeline is respectively communicated with casings of two phase busbars of the three phase busbars. The second air supplying pipeline is a three-way pipe which enables the casings of the three phase busbars to be communicated with each other. One end of air return pipeline is communicated with a casing of another phase busbar of the three phase busbars, and the other end of the air return pipe is communicated with the input end of the air filtering and drying system. An air compressor is utilized to perform enclosed circulating dehumidification in a casing of the enclosed busbar, so that requirements for moisture condensation or ice formation can not be met in the casing of the enclosed busbar in cold winter.
Description
Technical field
The utility model relates to the anti-condensation technical field, particularly a kind of anti-condensation device of enclosed busbar.
Background technology
Enclosed busbar is a kind of big current transmission device that is widely used in power plant, electric substation, industry and civilian power supply.As shown in Figure 1, enclosed busbar generally include A mutually 101, B mutually 102 and C 103 three-phases mutually, the shell of this three-phase enclosed busbar spacing of being separated by laterally arranges.
Anti-condensation device is as the servicing unit of enclosed busbar safe operation; Cataclysm appears in, temperature big at ambient humidity, the unit start and stop are frequent and shut down between turn(a)round; For air ambient good in the closure that guarantees bus with keep higher electric insulation level and play a part crucial; Especially for jumbo thermoelectricity, water power and nuclear power generating sets, the anti-condensation device of selecting to be suitable for power station environment and operation characteristic is even more important.
The method of the at present domestic anti-condensation of generally using is for going into the drying after filtering through the pressure-fired device, clean air to three-phase enclosed busbar envelope filled respectively; And make air pressure in the shell of enclosed busbar a little more than external atmosphere pressure; Thereby avoid extraneous malaria and dust to get in the shell of enclosed busbar, to play the effect of anti-condensation.
Thermoelectric unit with China the Northeast is an example, and energy output is little when heating in the winter time, and the conveying electric current of enclosed busbar is well below the rated current of design, and the temperature rise that on enclosed busbar conductor and shell, produces is very little.The outdoor environment temperature often reaches below the subzero twenty or thirty degree simultaneously, and then about 20 degree above freezing, the not only indoor external environment temperature difference is very big, and the temperature difference of indoor outer bus is also very big for temperature in the factory building.When adopting common pressure-fired device, because the pressure-fired apparatus arrangement is in factory building, if the dehumidifying effect of pressure-fired equipment is poor; The dew point temperature of dry back gas can not be lower than the temperature of outdoor bus; Then charge into the air in the outdoor part bus shell through the pressure-fired device, after air mixed in the former bus shell, the situation of outdoor bus self-temperature may appear being higher than in the dew point temperature of gas; Then still can cause in the bus moisture to exist and accumulate with non-gaseous; After moisture accumulation arrives to a certain degree, may cause bus insulation parts flashover or short circuit, unit is non-to stop thereby cause.
In addition in compressor emergency shutdown maintenance back or before starting first, maybe humidity in the bigger situation Down Highway of wet weather or the temperature difference bigger, insulation resistance be low, causes difficulty to unit starting, but original pressure-fired device but can not address this problem.
To sum up; Pressure-fired apparatus features of the prior art is that equipment is simple; But can't form a circulatory system, not have dehumidification function, not have effect for the situation of dewfall; The dewfall of (the gas aridity that charges into bus is not enough) even aggravation bus under opposite extreme situations, thus short circuit accident caused.
The utility model content
The utility model provides a kind of enclosed busbar anti-condensation device; It utilizes air compressor machine in the enclosed busbar shell, to carry out enclosed circulating dehumidification work, and (more than 40 ℃) guarantee do not possess dewfall or icing condition in the enclosed busbar shell under the condition of weather cold in the winter time.
The technical scheme that its technical problem of solution of the utility model is adopted is:
A kind of enclosed busbar anti-condensation device, said enclosed busbar comprises the three-phase bus that laterally arranges, it comprises:
Be used to provide the air filtration drying system of the pressure-fired gas that is delivered to enclosed busbar; Be used for starting or stoping the control system of said air filtration drying system according to the gas pressure in the enclosed busbar; With the steam line of pressure-fired gas delivery to the enclosed busbar of said air filtration drying system output, and with the return-air duct of the gas delivery in the said enclosed busbar to said air filtration drying system;
Said steam line comprises first steam line and second steam line,
One end of said first steam line is communicated with the output of said air filtration drying system, its other end respectively with said three-phase bus in wherein two mutually the enclosure of bus be communicated with,
Said second steam line is the three-way pipe with the enclosure connection of said three-phase bus,
In one end of said return-air duct and the said three-phase bus other one enclosure of bus mutually is communicated with, and its other end is communicated with the input of said air filtration drying system.
Preferably, the other end of said first steam line respectively with said three-phase bus in wherein two mutually the enclosure of the head end of bus be communicated with,
Said second steam line is communicated with the enclosure near end of said three-phase bus,
In one end of said return-air duct and the said three-phase bus other one enclosure of the head end of bus mutually is communicated with; Perhaps
The other end of said first steam line respectively with said three-phase bus in wherein one mutually the enclosure of the head end of bus be communicated with; Said second steam line is communicated with near the enclosure of end said three-phase bus, the other two enclosure connections of the head end of bus mutually in an end of said return-air duct and the said three-phase bus.
Preferably; Said air filtration drying system comprises: the air compressor that is used to provide the pressure-fired gas that is delivered to enclosed busbar; With the air accumulator that the output of said air compressor is communicated with, air cleaner, and the drying device that is used to reduce the humidity of said pressure-fired gas;
One end of said first steam line is communicated with the output of said absorption machine.
Preferably, further comprise sampling sensor, said sampling sensor is arranged at the enclosure of said enclosed busbar, and the sampled signal of said sampling sensor exports said control system to;
Said sampling sensor comprises the pressure sensor that is used to monitor the gas pressure in the enclosed busbar, the temperature sensor of the temperature in the monitoring enclosed busbar, and the dew point transducer that is used to monitor dew point in the enclosed busbar.
Preferably, said gas pressure sensor has the first threshold and second threshold value,
Said first threshold is 300Pa, and said second threshold value is 2500Pa.
Preferably, said air filtration drying system is arranged in the indoor environment.
Preferably, said air compressor is a screw air compressor.
Said drying device is heatless regeneration formula absorption machine.
Preferably, comprise that further the touch LCD that is used to show said sampled signal and control said control system shields.
Preferably, said temperature sensor comprises and is used to measure the infrared thermometry device of enclosed busbar conductor and enclosed busbar conductor tab temperature and the platinum resistance temperature sensor that is used to measure skin temperature.
Described screw-rod air compressor is a split-type structural, and it comprises compressor head, heat abstractor and the control device that separates setting, and said control system is controlled the startup of this compressor head and stopped.
Steam line and the return-air duct of the enclosed busbar anti-condensation device of the utility model through being connected with tail end with the head end of three-phase enclosed busbar respectively; In the shell of three-phase enclosed busbar, formed the pressure-fired gas passage of a circulation; Can be constantly in enclosed busbar, feed dry pressure-fired gas, thereby prevent the situation of the low even dewfall of the insulation resistance that causes owing to high humidity in the enclosed busbar.
Further; The enclosed busbar anti-condensation device of the utility model is through being provided with the dehumidifying filtration system; Humidity is bigger in the shell of enclosed busbar; Or carry out dehumidifying work in can be in compressor emergency shutdown maintenance back or before starting first, thereby can solve the condensation trouble of enclosed busbar to enclosed busbar.
Description of drawings
Fig. 1 is the structural representation of enclosed busbar.
Fig. 2 is the structural representation of the enclosed busbar anti-condensation device of the utility model.
Fig. 3 is the line sketch map of the enclosed busbar anti-condensation device of the utility model.
Embodiment
The utility model provides a kind of enclosed busbar anti-condensation device; It utilizes air compressor machine in the enclosed busbar shell, to carry out enclosed circulating dehumidification work, and (more than 40 ℃) guarantee do not possess dewfall or icing condition in the enclosed busbar shell under the condition of weather cold in the winter time.
Fig. 2 is the structural representation of the enclosed busbar anti-condensation device of the utility model.As shown in Figure 2, enclosed busbar comprises the three-phase bus that laterally arranges, be respectively A mutually 101, B mutually 102 and C mutually 103.The enclosed busbar anti-condensation device of the utility model comprises: the air filtration drying system 201 that is used to provide the pressure-fired gas that is delivered to enclosed busbar; Be used for starting or stoping the control system (not shown) of air filtration drying system 201 according to the gas pressure in the enclosed busbar; With the steam line of pressure-fired gas delivery to the enclosed busbar of said air filtration drying system output, and with the return-air duct 202 of the gas delivery in the enclosed busbar to air filtration drying system 201.
Wherein, steam line comprises first steam line 203 and second steam line 204.One end of first steam line 203 is communicated with the output of air filtration drying system 201, its other end respectively with three-phase bus in wherein two mutually the enclosure of bus be communicated with.Shown in Fig. 2 for respectively be positioned at B mutually the bus both sides A mutually 101 with C mutually 103 enclosure be communicated with.
Be communicated with the enclosure of three-phase bus through steam line and return-air duct, between enclosed busbar and air filtration drying system 201, formed the peripheral passage of a pressure-fired gas.That is, air filtration drying system 201 is under the start-up control of control system, and output is through the pressure-fired dry gas of filtration in the shell of phase enclosed busbar.This gas is from the output output of air filtration drying system 201; Through first steam line 203 feed A mutually 101 with C mutually in 103 the shell; And feed B mutually in 102 the shell through second steam line 204 that three-phase bus is communicated with, then through with B mutually the return-air duct 202 of 102 the shell connection input that is back to air filtration drying system 201 filter once more, dehumidify.
The enclosed busbar anti-condensation device of the utility model carries out enclosed circulating dehumidification work in the shell of enclosed busbar; Can guarantee the environment of enclosed busbar inner drying; Get rid of dewfall or icing condition from the source, solved the halfway shortcoming of the dehumidifying that existing once through system had.
Further; In order in enclosed busbar, to form a reasonable circulation route; As shown in Figure 2; First steam line 203 should with three-phase bus in wherein two mutually the head end of bus be communicated with, promptly with A mutually 101, C mutually 103 head end be communicated with, and second steam line 204 should with this two tail end connection of bus mutually.Simultaneously, return-air duct 202 should with other one mutually the head end of bus be communicated with, promptly with B 102 head end connection mutually.The pressure-fired gas that then inputs in the enclosed busbar is imported from the head end of A phase 101, C phase 103; Second steam line 204 from A phase 101, C phase 103 tail ends gets into B phase 102; And from B mutually the return-air duct 202 of 102 head ends be delivered to the air filtration drying system; Thereby make the gas circulation path in enclosed busbar, not have blind spot, reduce the humidity in the enclosed busbar better.
Perhaps, first steam line 203 can with three-phase bus in one mutually the head end of bus connect 204 of second steam lines and this tail end connection of bus mutually.Simultaneously, return-air duct 202 should with two outer two mutually the head end of bus be communicated with.Such connection can realize the gas passage of circulating equally.
Air filtration drying system in the utility model has the effect that pressure-fired gas, drying, filtration are provided; This air filtration drying system comprises: the air compressor that is used to provide the pressure-fired gas that is delivered to enclosed busbar; The air accumulator that is communicated with the output of this air compressor; Air cleaner, and the absorption machine that is used to reduce the humidity of pressure-fired gas.
Preferably, air compressor can be screw air compressor.Screw-rod air compressor is a split-type structural, and it comprises compressor head, heat abstractor and the control device that separates setting, and control system is controlled the startup of this compressor head and stopped.
Preferably; Control system adopts Mitsubishi's programmable logic controller (PLC) (PLC); And adopted touch-screen to show and control, to the operation conditions of bus anti-condensation device fault detect, warning and remote signaling output are provided, and have possessed the function that detects the bus leakage rate.
Fig. 3 shows the line sketch map of the enclosed busbar anti-condensation device of the utility model.As shown in Figure 3; Air compressor 301 is with pressure-fired gas delivery to air accumulator 302; Filter through filter 303 then; Behind the adsorption and dehumidification of absorption machine 304, export to through first steam line in the shell of A phase 101, B phase 102, C phase 103, the cooled via return air pipeline is back to air compressor 301 then.Also may further include the additional source of the gas 308 that is used for make-up gas, it can carry gas in air compressor 301 or steam line.
Further, because the air filtration drying system in the utility model has comprised the absorption machine 304 that is used to dehumidify, therefore, dehumidify and dew point adjusting work in the time of can the dewfall situation having taken place in enclosed busbar or have the dewfall condition.Particularly, before can or starting first in compressor emergency shutdown maintenance back, start the work that the air filtration drying system dehumidifies by control system.Work efficiently phase in order to ensure the absorption captain, affiliated control system has also increased the adsorbent replacing prompt facility that expires.
For useful life of prolonging the air filtration drying system and be convenient to its maintenance, preferably, the air filtration drying system is arranged in the indoor environment 205.Because the air filtration drying system of the utility model has the function of dehumidifying, therefore, even the air filtration drying system is arranged at indoor environment, the generation of dewfall situation in the enclosed busbar that also can avoid causing owing to indoor/outdoor temperature-difference is excessive in the prior art.
In order more accurately the air situation in the enclosed busbar to be controlled; The enclosed busbar anti-condensation device of the utility model further comprises a plurality of sampling sensors; The enclosure that it is arranged at enclosed busbar is used to monitor many indexs such as the interior gas pressure of enclosed busbar, temperature, dew point, and exports its sampled signal to control system; Control system starts or stops the work of air filtration drying system according to sampled signal; And fault detect is provided, and report to the police and remote signaling output, detect the function of bus leak rate.
Wherein, as shown in Figure 3, sampling sensor comprises the pressure sensor 305 that is used to monitor the gas pressure in the enclosed busbar, the temperature sensor 306 of the temperature in the monitoring enclosed busbar, and the dew point transducer 307 that is used to monitor dew point in the enclosed busbar.
Wherein, can two control threshold values, i.e. pressure thresholds in the enclosed busbar be set to pressure sensor 305.For example, first threshold can be set to 300Pa, and second threshold value is set to 2500Pa.Then when the gas pressure of pressure sensor monitoring in enclosed busbar is lower than 300Pa; Control system starts the air filtration drying system and begins in enclosed busbar, to inflate; When the gas pressure of pressure sensor monitoring in enclosed busbar was higher than 2500Pa, control system stopped the inflation work of air filtration drying system.The first threshold and second threshold value can be adjusted according to the actual conditions of work.
Temperature sensor 306 can comprise and is used to measure the infrared thermometry device of conductor and conductor tab temperature and the platinum resistance temperature sensor that is used to measure skin temperature.
Simultaneously, the dew point temperature in the enclosed busbar also can be adjusted according to actual conditions.For example; Need the dew point temperature in the enclosed busbar be maintained-below 40 ℃; Then at first start the air filtration drying system and begin inflation cycle, and through the dew point in the dew point transducer monitoring enclosed busbar, the dew point in enclosed busbar is lower than-40 ℃ by control system.When dew point was undesirable, the air filtration drying system can keep operating state.
The control mode of the whole system operation of the enclosed busbar anti-condensation device of the utility model is optional, comprises 1. and controlling with enclosed busbar pressure inside value; 2. with the inner dew point temperature value control of enclosed busbar; 3. through controlling with the dew point temperature value of enclosed busbar inside and the comparative result of ambient temperature value; And the combination in any of above three kinds of modes.
Prove through real work, the enclosed busbar anti-condensation device of the utility model in 24 hours just can with dew point temperature in 70 cubic metres the bus test section from approximately+30 ℃ be reduced to-40 ℃ (relative humidity be reduced to < 1%).Drop into circulating dehumidification after 2,3 hours, can insulation in the test section brought up to more than 10000 megaohms from 0 megaohm.
Steam line and the return-air duct of the enclosed busbar anti-condensation device of the utility model through being connected with tail end with the head end of three-phase enclosed busbar respectively; In the shell of three-phase enclosed busbar, formed the pressure-fired gas passage of a circulation; Can be constantly in enclosed busbar, feed dry pressure-fired gas, thereby prevent the situation of the low even dewfall of the insulation resistance that causes owing to high humidity in the enclosed busbar.
Further; The enclosed busbar anti-condensation device of the utility model is through being provided with the dehumidifying filtration system; Humidity is bigger in the shell of enclosed busbar; Or carry out dehumidifying work in can be in compressor emergency shutdown maintenance back or before starting first, thereby can solve the condensation trouble of enclosed busbar to enclosed busbar.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the scope of the utility model protection.
Claims (12)
1. enclosed busbar anti-condensation device, said enclosed busbar comprises the three-phase bus that laterally arranges, and it is characterized in that, comprising:
Be used to provide the air filtration drying system of the pressure-fired gas that is delivered to enclosed busbar; Be used for starting or stoping the control system of said air filtration drying system according to the gas pressure in the enclosed busbar; With the steam line of pressure-fired gas delivery to the enclosed busbar of said air filtration drying system output, and with the return-air duct of the gas delivery in the said enclosed busbar to said air filtration drying system;
Said steam line comprises first steam line and second steam line,
One end of said first steam line is communicated with the output of said air filtration drying system, its other end respectively with said three-phase bus in wherein two mutually the enclosure of bus be communicated with,
Said second steam line is the three-way pipe with the enclosure connection of said three-phase bus,
In one end of said return-air duct and the said three-phase bus other one enclosure of bus mutually is communicated with, and its other end is communicated with the input of said air filtration drying system.
2. enclosed busbar anti-condensation device according to claim 1; It is characterized in that; The other end of said first steam line respectively with said three-phase bus in wherein two mutually the enclosure of the head end of bus be communicated with; Said second steam line is communicated with near the enclosure of end said three-phase bus, the other one enclosure connection of the head end of bus mutually in an end of said return-air duct and the said three-phase bus; Perhaps
The other end of said first steam line respectively with said three-phase bus in wherein one mutually the enclosure of the head end of bus be communicated with; Said second steam line is communicated with near the enclosure of end said three-phase bus, the other two enclosure connections of the head end of bus mutually in an end of said return-air duct and the said three-phase bus.
3. enclosed busbar anti-condensation device according to claim 1 and 2; It is characterized in that; Said air filtration drying system comprises: the air compressor that is used to provide the pressure-fired gas that is delivered to enclosed busbar; With the air accumulator that the output of said air compressor is communicated with, air cleaner, and the drying device that is used to reduce the humidity of said pressure-fired gas;
One end of said first steam line is communicated with the output of said absorption machine.
4. enclosed busbar anti-condensation device according to claim 3 is characterized in that, further comprises sampling sensor, and said sampling sensor is arranged at the enclosure of said enclosed busbar, and the sampled signal of said sampling sensor exports said control system to;
Said sampling sensor comprises the pressure sensor that is used to monitor the gas pressure in the enclosed busbar, the temperature sensor of the temperature in the monitoring enclosed busbar, and the dew point transducer that is used to monitor dew point in the enclosed busbar.
5. enclosed busbar anti-condensation device according to claim 4 is characterized in that, said gas pressure sensor has the first threshold and second threshold value.
6. enclosed busbar anti-condensation device according to claim 5 is characterized in that, said first threshold is 300Pa, and said second threshold value is 2500Pa.
7. enclosed busbar anti-condensation device according to claim 3 is characterized in that, said air filtration drying system is arranged in the indoor environment.
8. enclosed busbar anti-condensation device according to claim 3 is characterized in that, said air compressor is a screw air compressor.
9. enclosed busbar anti-condensation device according to claim 3 is characterized in that, said drying device is heatless regeneration formula absorption machine.
10. enclosed busbar anti-condensation device according to claim 3 is characterized in that, comprises that further the touch LCD that is used to show said sampled signal and control said control system shields.
11. enclosed busbar anti-condensation device according to claim 4; It is characterized in that said temperature sensor comprises and is used to measure the infrared thermometry device of enclosed busbar conductor and enclosed busbar conductor tab temperature and the platinum resistance temperature sensor that is used to measure skin temperature.
12. enclosed busbar anti-condensation device according to claim 8; It is characterized in that; Described screw-rod air compressor is a split-type structural, and it comprises compressor head, heat abstractor and the control device that separates setting, and said control system is controlled the startup of this compressor head and stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207165 CN202586220U (en) | 2012-05-09 | 2012-05-09 | Anti-condensation device for enclosed busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207165 CN202586220U (en) | 2012-05-09 | 2012-05-09 | Anti-condensation device for enclosed busbar |
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| Publication Number | Publication Date |
|---|---|
| CN202586220U true CN202586220U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220207165 Expired - Lifetime CN202586220U (en) | 2012-05-09 | 2012-05-09 | Anti-condensation device for enclosed busbar |
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Cited By (4)
| 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 |
| CN106051230A (en) * | 2016-07-20 | 2016-10-26 | 北京电力设备总厂有限公司 | Liquid safety valve for controlling internal pressure of metal-enclosed bus |
| CN106786268A (en) * | 2015-11-23 | 2017-05-31 | 江苏大全封闭母线有限公司 | Insulation bus shell thermometric mounting structure |
| CN111682478A (en) * | 2020-04-07 | 2020-09-18 | 福建福清核电有限公司 | Combined device and method for keeping micro-positive pressure of closed bus for nuclear power plant |
-
2012
- 2012-05-09 CN CN 201220207165 patent/CN202586220U/en not_active Expired - Lifetime
Cited By (5)
| 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 |
| CN106786268A (en) * | 2015-11-23 | 2017-05-31 | 江苏大全封闭母线有限公司 | Insulation bus shell thermometric mounting structure |
| CN106051230A (en) * | 2016-07-20 | 2016-10-26 | 北京电力设备总厂有限公司 | Liquid safety valve for controlling internal pressure of metal-enclosed bus |
| CN106051230B (en) * | 2016-07-20 | 2020-01-03 | 北京电力设备总厂有限公司 | Liquid safety valve for controlling internal pressure of metal enclosed bus |
| CN111682478A (en) * | 2020-04-07 | 2020-09-18 | 福建福清核电有限公司 | Combined device and method for keeping micro-positive pressure of closed bus for nuclear power plant |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING ELECTRIC POWER EQUIPMENT GENERAL FACTORY C Free format text: FORMER NAME: BEIJING POWER EQUIPMENT GENERAL PLANT |
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| CP01 | Change in the name or title of a patent holder |
Address after: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee after: Co., Ltd of Beijing Electrical Equipment Factory Address before: 102401 Beijing City, Fangshan District Liangxiang Haotian Street No. 12 Patentee before: Beijing Electric Power Equipment General Factory |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |