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Patent Searching and Data


Title:
BOILER SUPERHEATED STEAM TEMPERATURE CONTROL METHOD, DEVICE AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/165839
Kind Code:
A1
Abstract:
Provided are a boiler superheated steam temperature control method, device and system. The temperature control method comprises the following steps: step 1: acquiring an outlet temperature of a present-level desuperheater and an outlet temperature of a present-level superheater; step 2: calculating a temperature feedforward value of the present-level desuperheater; step 3: calculating a temperature deviation value of an outlet of the present-level superheater; and step 4: sending a result of adding the temperature feedforward value and the temperature deviation value to a PID controller, and controlling the water spray amount of the present-level desuperheater by means of the PID controller. By means of the method, the temperature change trend of superheated steam, after passing through a desuperheater, in a superheater system can be reflected more truly and accurately, so that a controller precisely prejudges and controls the water spray amount of the desuperheater, and finally, a superheated steam temperature is maintained within a range required for boiler operation.

Inventors:
ZHANG, Xi (Units 3306-12 33/F, Shui On Centre 6-8 Harbour Rd, Wanchai Hong Kong 7, 999077, CN)
GENG, Guo (Units 3306-12 33/F, Shui On Centre 6-8 Harbour Rd, Wanchai Hong Kong 7, 999077, CN)
PARKER, Simon Anthony (Units 3306-12 33/F, Shui On Centre 6-8 Harbour Rd, Wanchai Hong Kong 7, 999077, CN)
Application Number:
CN2018/124152
Publication Date:
September 06, 2019
Filing Date:
December 27, 2018
Export Citation:
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Assignee:
DP CLEANTECH (HONG KONG) LIMITED (Units 3306-12 33/F, Shui On Centre 6-8 Harbour Rd, Wanchai Hong Kong 7, 999077, CN)
International Classes:
F22G5/12; F22B35/00
Foreign References:
CN108386829A2018-08-10
CN102607006A2012-07-25
CN107506010A2017-12-22
CN105114931A2015-12-02
CN107218594A2017-09-29
CN205640875U2016-10-12
US4241701A1980-12-30
Attorney, Agent or Firm:
KINGSOUND & PARTNERS (11/F, Block B KingSound International Center,116 Zizhuyuan Road, Haidian District, Beijing 7, 100097, CN)
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