JPS555436A - Reheated steam temperature controller - Google Patents

Reheated steam temperature controller

Info

Publication number
JPS555436A
JPS555436A JP7654178A JP7654178A JPS555436A JP S555436 A JPS555436 A JP S555436A JP 7654178 A JP7654178 A JP 7654178A JP 7654178 A JP7654178 A JP 7654178A JP S555436 A JPS555436 A JP S555436A
Authority
JP
Japan
Prior art keywords
temperature
steam
reheater
signals
spray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7654178A
Other languages
Japanese (ja)
Inventor
Eiichi Kaminaga
Makoto Kamazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7654178A priority Critical patent/JPS555436A/en
Publication of JPS555436A publication Critical patent/JPS555436A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To use a reheater spray control valve for controlling the ordinary temperature of steam reheated, by comparing deviation between set temperature based on the temperature of saturated steam computed from the quantity of main steam and the temperature of an outlet of a reheater with spray valve demand signals.
CONSTITUTION: The minimum temperature that does not reach the temperature of saturated steam is calculated from the output of a steam flow-rate transmission instrument 1 of an outlet of a reheater 19 of each load by means of a function computing element 4, the excessive charging preventive signals of a spray water are formed by computing deviation with the output of a steam temperature detector 3 of the outlet of the reheater 19, the observation of the temperature of steam reheated, by means of a proportional, integral computing element 5, and a spray valve 8 is controlled by selecting signals in low levels by means of a selector from said signals and the output signals of a proportional, integral computing element 10 for producing the demand signals of the spray valve 8 of the reheater. Thus, the oridinary temperature of steam reheated can be controlled by means of the spray valve 8 because the inflow of waterdrops to a burbine is obstructed.
COPYRIGHT: (C)1980,JPO&Japio
JP7654178A 1978-06-26 1978-06-26 Reheated steam temperature controller Pending JPS555436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7654178A JPS555436A (en) 1978-06-26 1978-06-26 Reheated steam temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7654178A JPS555436A (en) 1978-06-26 1978-06-26 Reheated steam temperature controller

Publications (1)

Publication Number Publication Date
JPS555436A true JPS555436A (en) 1980-01-16

Family

ID=13608121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7654178A Pending JPS555436A (en) 1978-06-26 1978-06-26 Reheated steam temperature controller

Country Status (1)

Country Link
JP (1) JPS555436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486306A (en) * 1990-07-31 1992-03-18 Toshiba Corp Combined cycle main steam temperature control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486306A (en) * 1990-07-31 1992-03-18 Toshiba Corp Combined cycle main steam temperature control device

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