Patents by Inventor Dai Q. Dau
Dai Q. Dau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9857077Abstract: A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. The curved vanes curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover that allows for easy access. The vanes are attached to a wear-resistant replaceable liner thus allowing them to be easily removed and replaced. The wear-resistant liner may be made from several parts for ease of removal and replacement.Type: GrantFiled: August 24, 2015Date of Patent: January 2, 2018Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Daniel J. Adam, Oliver G. Briggs, Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Publication number: 20170023243Abstract: A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. The curved vanes curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover that allows for easy access. The vanes are attached to a wear-resistant replaceable liner thus allowing them to be easily removed and replaced. The wear-resistant liner may be made from several parts for ease of removal and replacement.Type: ApplicationFiled: August 24, 2015Publication date: January 26, 2017Applicant: ALSTOM Technology LtdInventors: Daniel J. Adam, Oliver G. Briggs, Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Publication number: 20150362181Abstract: A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. The curved vanes curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover that allows for easy access. The vanes are attached to a wear-resistant replaceable liner thus allowing them to be easily removed and replaced. The wear-resistant liner may be made from several parts for ease of removal and replacement.Type: ApplicationFiled: August 24, 2015Publication date: December 17, 2015Applicant: ALSTOM Technology LtdInventors: Daniel J. Adam, Oliver G. Briggs, JR., Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Patent number: 9151493Abstract: A head assembly 52,152 for a pulverized coal nozzle includes a turning vane 54 or a curved vane 154 disposed within a pipe elbow. The vanes 54,154 are angled relative to the inlet port and the outlet port of the pipe elbow to redirect a stream of air and pulverized solid fuel particles from the inlet port 60,160 toward the outlet port 62,162. The coal rope-breaking vane 56 is pivotable about an axis to adjust an angle of the vanes relative to a stream of air and pulverized solid fuel particles from the inlet port 60,160. An adjustment bar 66 may connect to the vanes 56 and extend outward through the pipe elbow to allow the vanes 56 to be adjusted while the pulverized solid fuel particles flow through the head assembly 52. The pipe elbow may further include inspection ports 68,168 and a removable cover 70,170. The vanes may be attached to the removable cover 70,170 thus allowing them to be easily removed and replaced.Type: GrantFiled: July 17, 2009Date of Patent: October 6, 2015Assignee: ALSTOM Technology LtdInventors: Daniel J. Adam, Oliver G. Briggs, Jr., Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Patent number: 9151434Abstract: A head assembly 52, 152 for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes 54, 151, 153. The vanes 54, 151, 153 may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port 60, 160 toward the outlet port 62, 162. The curved vanes 151, 153 curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover 70, 170 that allows for easy access. The vanes are attached to a wear-resistant replaceable liner 185 thus allowing them to be easily removed and replaced. The wear-resistant liner 185 may be made from several parts 187, 189 for ease of removal and replacement.Type: GrantFiled: November 2, 2009Date of Patent: October 6, 2015Assignee: ALSTOM Technology LtdInventors: Daniel J. Adam, Oliver G. Briggs, Jr., Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Publication number: 20100154689Abstract: A head assembly 52, 152 for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes 54, 151, 153. The vanes 54, 151, 153 may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port 60, 160 toward the outlet port 62, 162. The curved vanes 151, 153 curve in two dimensions to evenly distribute the stream of air and pulverized solid fuel away from the outer surfaces reducing wear and corrosion. The pipe elbow has a removable cover 70, 170 that allows for easy access. The vanes are attached to a wear-resistant replaceable liner 185 thus allowing them to be easily removed and replaced. The wear-resistant liner 185 may be made from several parts 187, 189 for ease of removal and replacement.Type: ApplicationFiled: November 2, 2009Publication date: June 24, 2010Applicant: ALSTOM TECHNOLOGY LTDInventors: Daniel J. Adam, Oliver G. Briggs, Jr., Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills
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Publication number: 20100154688Abstract: A head assembly 52,152 for a pulverized coal nozzle includes a turning vane 54 or a curved vane 154 disposed within a pipe elbow. The vanes 54,154 are angled relative to the inlet port and the outlet port of the pipe elbow to redirect a stream of air and pulverized solid fuel particles from the inlet port 60,160 toward the outlet port 62,162. The coal rope-breaking vane 56 is pivotable about an axis to adjust an angle of the vanes relative to a stream of air and pulverized solid fuel particles from the inlet port 60,160. An adjustment bar 66 may connect to the vanes 56 and extend outward through the pipe elbow to allow the vanes 56 to be adjusted while the pulverized solid fuel particles flow through the head assembly 52. The pipe elbow may further include inspection ports 68,168 and a removable cover 70,170. The vanes may be attached to the removable cover 70,170 thus allowing them to be easily removed and replaced.Type: ApplicationFiled: July 17, 2009Publication date: June 24, 2010Applicant: ALSTOM TECHNOLOGY LTDInventors: Daniel J. Adam, Oliver G. Briggs, JR., Thomas J. Campanelli, Paul M. Colson, Christopher D. Curl, Dai Q. Dau, Wendell H. Mills