CN201350388Y - Adsorption dryer - Google Patents
Adsorption dryer Download PDFInfo
- Publication number
- CN201350388Y CN201350388Y CNU2008202052778U CN200820205277U CN201350388Y CN 201350388 Y CN201350388 Y CN 201350388Y CN U2008202052778 U CNU2008202052778 U CN U2008202052778U CN 200820205277 U CN200820205277 U CN 200820205277U CN 201350388 Y CN201350388 Y CN 201350388Y
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Abstract
The utility model relates to an adsorption dryer, comprising a first absorption tower, a second absorption tower, an intake air path switching device, an exhausting/ regenerating air path control device and a controller. The adsorption dryer is characterized in that the intake air path switching device is an integral combination valve which comprises a valve body, a left cylinder and a right cylinder, wherein the valve body is divided into four air chambers; a middle air chamber is provided with a slide valve plug, and a left air chamber and a right air chamber are respectively provided with a pressurized valve seat and a valve plug; and the two pressurized valve seat are connected by a pressurized pipe. One integral combination valve can be used to finish the switching of intake air paths, so the structure is simple and reliable. The controller is provided with a programmable controller, a man-machine interface, an analog module and a communication module, which can be used to detect the dew point temperature of air of finished products and the gas temperature of the gas outlet of a heater. The controller can be used for controlling according to the detection result, thereby achieving the purposes of accurate control and energy saving.
Description
Technical field
The utility model relates to a kind of compressed air treatment device, is specifically related to a kind of absorption compressed air drying device.
Background technology
The compressed air purification industry is to rise gradually and develop industry faster in China in recent years, under the situation of global available resources growing tension, utilize compressed air as power source general be applied in all trades and professions.But it is, also more and more higher to the requirement of product quality and manufacturing cost along with being growing more intense of market competition.
The structure of at present domestic most of compressed air treatment devices is more complicated all, and connecting tube is many, and therefore the valve that will control is also corresponding more.As a kind of traditional absorption drier of Fig. 1, its gas circuit switching part 21 has adopted four to disperse independently electrically-controlled valve 211,212,213,214, uses complicated relay circuit control, and poor reliability is installation, maintenance, it is all pretty troublesome to control.
In addition, present most absorption drier is not all established adsorbent heat drying device, and adsorbent can not fully dry in regenerative process, causes aridity to influence compressed air inadequately and handles; Though also have the minority absorption drier all to be provided with adsorbent heat drying device, there is defective in the function of heater, causes power consumption higher.
Summary of the invention
Basic task of the present utility model provides a kind of simple in structure and reliable absorption drier.
The further task of the utility model is to make described absorption drier not only simple in structure, reliable, and dry in the adsorbent reactivation process, drying effect is good, and power consumption is little.
Technical scheme of the present invention is as follows:
A kind of absorption drier, comprise first adsorption tower, second adsorption tower and controller, be connected with an air inlet gas circuit switching device shifter between the air inlet of first adsorption tower and second adsorption tower, air inlet gas circuit switching device shifter is provided with air inlet, be connected with an exhaust/regeneration gas circuit control device between the gas outlet of first adsorption tower and second adsorption tower, exhaust/regeneration gas circuit control device is provided with the outlet of finished product gas, and it is characterized in that: described air inlet gas circuit switching device shifter is the combination valve of integral type.
Described integral type combination valve comprises valve body, left cylinder, right cylinder, and valve body is divided into upper chamber, left air chamber, middle air chamber, right air chamber; Upper chamber and middle air chamber all are communicated with left air chamber, right air chamber respectively; Left side air chamber is provided with left pressurising valve seat, and right air chamber is provided with right pressurising valve seat, and left pressurising valve seat and right pressurising valve seat couple together by the pressurising pipe; Be provided with valve plug between the connected entrance of a left side air chamber and upper chamber and the left pressurising valve seat and link to each other with left cylinder; Be provided with valve plug between the connected entrance of right air chamber and upper chamber and the right pressurising valve seat and link to each other with right cylinder; Be provided with the slip valve plug between the connected entrance of middle air chamber and left air chamber and middle air chamber and the right air chamber connected entrance; Described air inlet links to each other with middle air chamber, and left air chamber is provided with left gas outlet, and the import of the left gas outlet and first adsorption tower is joined and connect, and right air chamber is provided with right gas outlet, and the import of the right gas outlet and second adsorption tower is joined, and upper chamber is provided with exhaust outlet.
Described controller is provided with Programmable Logic Controller, A/D modular converter, man-machine interface, communication module, and the control end of described left cylinder and right cylinder directly or indirectly is connected with an output of Programmable Logic Controller respectively.
Described exhaust outlet is connected with a silencer, reduces the noise that sends because of exhaust.
Described air inlet place is provided with low tension switch, and the output of low tension switch is connected with an input of described Programmable Logic Controller, and low tension switch is used to judge whether the operating pressure of absorption drier reaches lower limit.
Be connected with a dew-point temperature transmitter at described finished product gas outlet, the signal output part of dew-point temperature transmitter is connected with the input end of analog signal of described A/D modular converter, is used to detect the dew-point temperature of finished product gas.
Described exhaust/regenerating control device comprises first check valve, second check valve, bypass duct, restricting orifice; All outlet is connected with finished product gas in the gas outlet of first check valve and second check valve, and the air inlet of first check valve is connected with the gas outlet of first adsorption tower, and the air inlet of second check valve is connected with the gas outlet of second adsorption tower; The two ends of bypass duct are connected with the gas outlet of first adsorption tower with second adsorption tower respectively, and bypass duct is provided with restricting orifice.The absorption drier that adopts this exhaust/regenerating control device is not for the absorption drier of heater.
Described exhaust/regenerating control device comprises first check valve, second check valve, the 3rd check valve, the 4th check valve, heater; The gas outlet of first check valve and second check valve all is connected with finished product gas gas outlet, and the air inlet of check valve is connected with the gas outlet of first adsorption tower, and the air inlet of check valve is connected with the gas outlet of second adsorption tower; The air inlet of the 3rd check valve and the 4th check valve all is connected with the gas outlet of heater, and the gas outlet of the 3rd check valve is connected with the gas outlet of first adsorption tower, and the gas outlet of the 4th check valve is connected with the gas outlet of second adsorption tower; The air inlet of heater is connected with the outlet of finished product gas; The control end of heater is connected with an output of Programmable Logic Controller.The absorption drier that adopts this exhaust/regenerating control device is the absorption drier that has heater.The place is connected with a temperature transmitter in the heater gas outlet, and the signal output part of temperature transmitter is connected with the input end of analog signal of described A/D modular converter, is used to detect the gas temperature of heater gas outlet.
Be respectively equipped with Pressure gauge on described first adsorption tower and second adsorption tower, be convenient to the pressure condition that the staff observes first adsorption tower and second adsorption tower.
The utility model has the advantages that: simple in structure, installation, easy to maintenance; The reliability height, antijamming capability is strong, and precise control is energy-conservation; Perfect in shape and function can be operated by man-machine interface or network.
Description of drawings
Fig. 1 is traditional absorption drier schematic diagram;
Fig. 2 is one of the utility model absorption drier schematic diagram;
Fig. 3 is two of the utility model absorption drier schematic diagram;
The specific embodiment
Embodiment 1:
A kind of absorption drier, as shown in Figure 2, inferior absorption drier is not for the absorption drier of heater, comprise first adsorption tower 1, second adsorption tower 2 and controller 10, the air inlet 101 of first adsorption tower and second adsorption tower, be connected with an air inlet gas circuit switching device shifter 9 between 201, air inlet gas circuit switching device shifter 9 is provided with air inlet 901, the gas outlet 102 of first adsorption tower and second adsorption tower, be connected with an exhaust/regeneration gas circuit control device between 202, exhaust/regeneration gas circuit control device is provided with finished product gas outlet 14, and air inlet gas circuit switching device shifter 9 is combination valves of a kind of integral type.
Integral type combination valve 9 comprises valve body, left cylinder 912, right cylinder 913, and valve body is divided into upper chamber 905, left air chamber 906, middle air chamber 907, right air chamber 908; Upper chamber 905 and middle air chamber 907 all are communicated with left air chamber 906, right air chamber 908 respectively; Left side air chamber 906 is provided with left pressurising valve seat 909, and right air chamber 908 is provided with right pressurising valve seat 910, and left pressurising valve seat 909 and right pressurising valve seat 910 couple together by pressurising pipe 911; Be provided with valve plug 914 between the connected entrance of a left side air chamber 906 and upper chamber 905 and the left pressurising valve seat 909 and link to each other with left cylinder 912; Be provided with valve plug 915 between the connected entrance of right air chamber 908 and upper chamber 905 and the right pressurising valve seat 910 and link to each other with right cylinder 913; Be provided with slip valve plug 916 between the connected entrance of middle air chamber 907 and left air chamber 906 and middle air chamber 907 and right air chamber 908 connected entrances; Described air inlet 901 links to each other with middle air chamber 907, left side air chamber 906 is provided with left gas outlet 902, the import 101 of the gas outlet 902, a left side and first adsorption tower is joined and is connect, right air chamber 908 is provided with gas outlet, the left and right sides 903, the import 201 of the right gas outlet 903 and second adsorption tower is joined, upper chamber 905 is provided with exhaust outlet 904, and described exhaust outlet 904 is connected with a silencer 13.
Exhaust/regenerating control device comprises first check valve 3, second check valve 4, bypass duct 15, restricting orifice 16; The gas outlet of first check valve 3 and second check valve 4 all is connected with finished product gas outlet 14, and the two ends of bypass duct 15 are connected with the gas outlet 102,202 of first adsorption tower and second adsorption tower respectively, and bypass duct 15 is provided with restricting orifice 16.
Operation principle is:
1 absorption of first adsorption tower, 2 regeneration of second adsorption tower: the slip valve plug 916 of air chamber 907 is in the left side under the original state, left side cylinder 912 and right cylinder 913 all must not, the valve plug 914,915 that is driven by cylinder all is in the top, cuts off the connected entrance of upper chamber 905 and left air chamber 906, right air chamber 908 respectively.Air chamber 907 during compressed air enters by air inlet 901, part compressed air enters into second adsorption tower 2 by the import 201 of right air chamber 908, interface 903, second adsorption tower 2, part compressed air enters into first adsorption tower 1 by the import 101 of pressurising valve seat 910, pressurising pipe 911, pressurising valve seat 909, left air chamber 906, interface 902, first adsorption tower 1, through the pressure balance of first adsorption tower 1 after the corresponding time and second adsorption tower 2, pressurising this moment process is finished.Control lower cylinder 913 at controller gets, electric back drive valve plug 915 down moving handle pressurising valve seat 910 block, thereby cut off being communicated with and having opened the connected entrance of upper chamber 905 of left air chamber 906 and right air chamber 908 with right air chamber 908, right air chamber is connected with atmosphere by upper chamber 905, interface 904, silencer 13, therefore the air pressure moment decline of right air chamber 908, form certain pressure reduction with left air chamber 906, promotion sliding block 916 at pressure reduction moves right, the connected entrance of air chamber 907 and right air chamber 908 in blocking.Therefore the compressed air that enters into air chamber 907 all enters first adsorption tower 1, carrying out the most of air in dry back in first adsorption tower 1 discharges from finished product gas air inlet 14 by check valve 3 by the gas outlet 102 of first adsorption tower 1 more again, another part air enters second adsorption tower 2 and the adsorbent second adsorption tower 2 is dried up the import 201 that second adsorption tower 2 is passed through in the regeneration back by shunt valve 15 and restricting orifice 16 gas outlet 202 from second adsorption tower 2, right gas outlet 903, right air chamber 908, upper chamber 905, exhaust outlet 904, silencer 13 is discharged into atmosphere, recovers the drying capacity of second adsorption tower, 2 drier.
2 absorption of second adsorption tower, operation principle during 1 regeneration of first adsorption tower and 1 absorption of first adsorption tower, the operation principle of second adsorption tower, 2 regeneration is identical, and the person of an ordinary skill in the technical field is easy to according to adsorption tower 1 absorption, and the operation principle of second adsorption tower, 2 regeneration draws.
Embodiment 2:
As shown in Figure 3 be another kind of absorption drier, inferior absorption drier is the absorption drier that has heater, its structure and embodiment 1 described absorption drier are basic identical, and different is: its exhaust/regenerating control device comprises first check valve 3, second check valve 4, the 3rd check valve 5, the 4th check valve 6, heater 7; The gas outlet of first check valve 3 and second check valve 4 all is connected with finished product gas gas outlet 14, and the air inlet of first check valve 3 is connected with the gas outlet 102 of first adsorption tower, and the air inlet of second check valve 4 is connected with the gas outlet 202 of second adsorption tower; The air inlet of the 3rd check valve 5 and the 4th check valve 6 all is connected with the gas outlet of heater 7, and the gas outlet of the 3rd check valve 5 is connected with the gas outlet 102 of first adsorption tower, and the gas outlet of the 4th check valve 6 is connected with the gas outlet 202 of second adsorption tower; The air inlet of heater 7 is connected with finished product gas outlet 14, and the control end of heater is connected with an output of Programmable Logic Controller.Its controller 10 is provided with Programmable Logic Controller, A/D modular converter, man-machine interface, communication module.The control end of left side cylinder 912 and right cylinder 913 is connected with an output of Programmable Logic Controller respectively.Its exhaust outlet 904 is connected with a silencer 13.Air inlet 901 is provided with low tension switch 17, and the output of low tension switch 17 is connected with an input of described Programmable Logic Controller; Finished product gas exports 14 places and is connected with a dew-point temperature transmitter 11, and the signal output part of dew-point temperature transmitter 11 is connected with the input end of analog signal of described A/D modular converter; Place, heater 7 gas outlets is connected with a temperature transmitter 12, and the signal output part of temperature transmitter 12 is connected with the input end of analog signal of described A/D modular converter; Be respectively equipped with Pressure gauge 18,19 on first adsorption tower 1 and second adsorption tower 2.
Operation principle of this absorption drier and embodiment 1 described operation principle are basic identical.Different is: when the absorption of first adsorption tower 1, during 2 regeneration of second adsorption tower, the portion of air heater via 7 heating backs of finished product gas outlet 14 enter second adsorption tower 2 by the 4th check valve 6, and the adsorbent of second adsorption tower 2 is carried out drying; In like manner, when the absorption of second adsorption tower 2, during 1 regeneration of first adsorption tower, the portion of air heater via 7 heating backs of finished product gas outlet 14 enter first adsorption tower 1 by the 3rd check valve 5, and the adsorbent of first adsorption tower 1 is carried out drying.Gas is more remarkable to the drying effect of drier through the heating back.
In addition in this absorption drier course of work, when system pressure is crossed when low, low tension switch 17 actions, and signal is sent to Programmable Logic Controller, Controlled by Programmable Controller left side cylinder 912 and right cylinder 913 all must not, make valve plug 914 and valve plug 915 turn back to the top, all press again, carry out work more again after all pressure is finished by the time.
In this absorption drier course of work, when the dew-point temperature of finished product gas is lower than setting value, the switching time of Programmable Logic Controller meeting proper extension adsorption tower, save compressed air, and when finished product gas dew-point temperature greater than when setting value, Programmable Logic Controller can suitably shorten the switching time of adsorption tower, guarantees that finished product gas dew-point temperature drops in the required dew-point temperature.
In this absorption drier course of work, the Controlled by Programmable Controller heater heats when the gas temperature of heater gas outlet is lower than design temperature; When heater gas outlet gas temperature was higher than design temperature, the Controlled by Programmable Controller heater stopped heating, and the heater air outlet temperature is controlled in the required scope, and gas temperature is not only met the requirements but also saved power consumption.
In this absorption drier course of work, the staff can be led to the pressure condition that Pressure gauge on the adsorption tower is checked adsorption tower at any time.
Claims (10)
1, a kind of absorption drier, comprise first adsorption tower (1), second adsorption tower (2) and controller (10), the air inlet (101 of first adsorption tower and second adsorption tower, 201) be connected with an air inlet gas circuit switching device shifter (9) between, air inlet gas circuit switching device shifter (9) is provided with air inlet (901), the gas outlet (102 of first adsorption tower and second adsorption tower, 202) be connected with an exhaust/regeneration gas circuit control device between, exhaust/regeneration gas circuit control device is provided with finished product gas outlet (14), and it is characterized in that: described air inlet gas circuit switching device shifter (9) is the combination valve of integral type.
2, according to the absorption drier of claim 1, it is characterized in that: described integral type combination valve (9) comprises valve body, left cylinder (912), right cylinder (913), and valve body is divided into upper chamber (905), left air chamber (906), middle air chamber (907), right air chamber (908); Upper chamber (905) and middle air chamber (907) all are communicated with left air chamber (906), right air chamber (908) respectively; Left side air chamber (906) is provided with left pressurising valve seat (909), and right air chamber (908) is provided with right pressurising valve seat (910), and left pressurising valve seat (909) and right pressurising valve seat (910) couple together by pressurising pipe (911); Be provided with valve plug (914) between left side air chamber (906) and the connected entrance of upper chamber (905) and the left pressurising valve seat (909) and link to each other with left cylinder (912); Be provided with valve plug (915) between the connected entrance of right air chamber (908) and upper chamber (905) and the right pressurising valve seat (910) and link to each other with right cylinder (913); Be provided with slip valve plug (916) between the connected entrance of middle air chamber (907) and left air chamber (906) and middle air chamber (907) and right air chamber (908) connected entrance; Described air inlet (901) links to each other with middle air chamber (907), left side air chamber (906) is provided with left gas outlet (902), gas outlet, a left side (902) joins with the import (101) of first adsorption tower and connects, right air chamber (908) is provided with right gas outlet (903), right gas outlet (903) joins with the import (201) of second adsorption tower, and upper chamber (905) is provided with exhaust outlet (904).
3, according to the absorption drier of claim 2, it is characterized in that: described controller (10) is provided with Programmable Logic Controller, A/D modular converter, man-machine interface, communication module, and the control end of described left cylinder (912) and right cylinder (913) directly or indirectly is connected with an output of Programmable Logic Controller respectively.
4, according to the absorption drier of claim 2, it is characterized in that: described exhaust outlet (904) is connected with a silencer (13).
5, according to the absorption drier of claim 3, it is characterized in that: described air inlet (901) locates to be provided with low tension switch (17), and the output of low tension switch (17) is connected with an input of described Programmable Logic Controller.
6, according to the absorption drier of claim 3, it is characterized in that: locate to be connected with a dew-point temperature transmitter (11) in described finished product gas outlet (14), the signal output part of dew-point temperature transmitter (11) is connected with the input end of analog signal of described A/D modular converter.
7, according to described any one absorption drier of claim 1-6, it is characterized in that: described exhaust/regenerating control device comprises first check valve (3), second check valve (4), bypass duct (15), restricting orifice (16); The gas outlet of first check valve (3) and second check valve (4) all is connected with finished product gas outlet (14), the air inlet of first check valve (3) is connected with the gas outlet (102) of first adsorption tower, and the air inlet of second check valve (4) is connected with the gas outlet (202) of second adsorption tower; The two ends of bypass duct (15) are connected with the gas outlet (102,202) of first adsorption tower and second adsorption tower respectively, and bypass duct (15) is provided with restricting orifice (16).
8, according to described any one absorption drier of claim 1-6, it is characterized in that: described exhaust/regenerating control device comprises first check valve (3), second check valve (4), the 3rd check valve (5), the 4th check valve (6), heater (7); The gas outlet of first check valve (3) and second check valve (4) all is connected with finished product gas air inlet (14), the air inlet of first check valve (3) is connected with the gas outlet (102) of first adsorption tower, and the air inlet of second check valve (4) is connected with the gas outlet (202) of second adsorption tower; The air inlet of the 3rd check valve (5) and the 4th check valve (6) all is connected with the gas outlet of heater (7), the gas outlet of the 3rd check valve (5) is connected with the gas outlet (102) of first adsorption tower, and the gas outlet of the 4th check valve (6) is connected with the gas outlet (202) of second adsorption tower; The air inlet of heater (7) is connected with finished product gas outlet (14); The control end of heater (7) directly or indirectly is connected with an output of Programmable Logic Controller.
9, absorption drier according to Claim 8 is characterized in that: the place is connected with a temperature transmitter (12) in described heater (7) gas outlet, and the signal output part of temperature transmitter (12) is connected with the input end of analog signal of described A/D modular converter.
10, according to the absorption drier of claim 1, it is characterized in that: be respectively equipped with Pressure gauge (18,19) on described first adsorption tower (1) and second adsorption tower (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202052778U CN201350388Y (en) | 2008-12-15 | 2008-12-15 | Adsorption dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202052778U CN201350388Y (en) | 2008-12-15 | 2008-12-15 | Adsorption dryer |
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| Publication Number | Publication Date |
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| CN201350388Y true CN201350388Y (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202052778U Expired - Fee Related CN201350388Y (en) | 2008-12-15 | 2008-12-15 | Adsorption dryer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764570A (en) * | 2012-07-05 | 2012-11-07 | 杭州山立净化设备有限公司 | Controlling system of low-pressure compressed air adsorption type dryer |
| CN103405989A (en) * | 2013-08-19 | 2013-11-27 | 上海启元空分技术发展股份有限公司 | Control cabinet device of air type purifier device and control method thereof |
| CN103566717A (en) * | 2013-11-01 | 2014-02-12 | 蚌埠方正气体净化设备有限公司 | Integrated type one-way valve mounting plate for gas drying and purifying device |
| CN104122834A (en) * | 2014-07-25 | 2014-10-29 | 株洲高新技术产业开发区壹星科技有限公司 | Control method and device for heat-adsorption-free air drier |
| CN106594327A (en) * | 2016-12-30 | 2017-04-26 | 蚌埠方正气体设备有限公司 | High-pressure gas combined valve for adsorption type dryer |
| CN114159928A (en) * | 2021-12-17 | 2022-03-11 | 湖南卓誉科技有限公司 | Integrated air inlet and outlet valve and pressure swing adsorption gas path system |
| CN115784166A (en) * | 2022-12-13 | 2023-03-14 | 湖南卓誉科技有限公司 | Modularization system oxygen host |
-
2008
- 2008-12-15 CN CNU2008202052778U patent/CN201350388Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764570A (en) * | 2012-07-05 | 2012-11-07 | 杭州山立净化设备有限公司 | Controlling system of low-pressure compressed air adsorption type dryer |
| CN102764570B (en) * | 2012-07-05 | 2014-08-27 | 杭州山立净化设备有限公司 | Controlling system of low-pressure compressed air adsorption type dryer |
| CN103405989A (en) * | 2013-08-19 | 2013-11-27 | 上海启元空分技术发展股份有限公司 | Control cabinet device of air type purifier device and control method thereof |
| CN103405989B (en) * | 2013-08-19 | 2017-02-08 | 上海启元空分技术发展股份有限公司 | Control cabinet device of air type purifier device and control method thereof |
| CN103566717A (en) * | 2013-11-01 | 2014-02-12 | 蚌埠方正气体净化设备有限公司 | Integrated type one-way valve mounting plate for gas drying and purifying device |
| CN103566717B (en) * | 2013-11-01 | 2016-08-17 | 蚌埠方正气体设备有限公司 | A kind of integrated form check valve installing plate for gas drying purifier |
| CN104122834A (en) * | 2014-07-25 | 2014-10-29 | 株洲高新技术产业开发区壹星科技有限公司 | Control method and device for heat-adsorption-free air drier |
| CN106594327A (en) * | 2016-12-30 | 2017-04-26 | 蚌埠方正气体设备有限公司 | High-pressure gas combined valve for adsorption type dryer |
| CN114159928A (en) * | 2021-12-17 | 2022-03-11 | 湖南卓誉科技有限公司 | Integrated air inlet and outlet valve and pressure swing adsorption gas path system |
| CN115784166A (en) * | 2022-12-13 | 2023-03-14 | 湖南卓誉科技有限公司 | Modularization system oxygen host |
| CN115784166B (en) * | 2022-12-13 | 2024-04-12 | 湖南卓誉科技有限公司 | Modularized oxygen-making host |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20121215 |