JPH0139024B2 - - Google Patents
Info
- Publication number
- JPH0139024B2 JPH0139024B2 JP3712382A JP3712382A JPH0139024B2 JP H0139024 B2 JPH0139024 B2 JP H0139024B2 JP 3712382 A JP3712382 A JP 3712382A JP 3712382 A JP3712382 A JP 3712382A JP H0139024 B2 JPH0139024 B2 JP H0139024B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- boiler
- hot water
- water
- outlet
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 86
- 239000007789 gas Substances 0.000 claims description 22
- 239000002918 waste heat Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/215—Temperature of the water before heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/238—Flow rate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
- F24H15/325—Control of valves of by-pass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/335—Control of pumps, e.g. on-off control
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【発明の詳細な説明】
本発明は、転炉排ガスのようにガスの流量が変
動する廃熱利用の温水ボイラに於ける出口温水温
度の制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling outlet hot water temperature in a hot water boiler utilizing waste heat in which the flow rate of gas such as converter exhaust gas fluctuates.
従来の第１図に示される廃熱利用の温水ボイラ
１に於ける膨張タンク２を備えた密閉サイクルの
給水系統３では、ボイラ１への給水入口温度を温
度検出器４にて検出し、その検出温度を制御器５
に送つて予め設定された給水入口温度との偏差に
よつて熱水タービン、フロンタービン等の温水利
用設備６を経由する冷水回路７の開閉弁８と、温
水利用設備６をバイパスする温水回路９の開閉弁
１０の開度を調節して循環ポンプ１１にてボイラ
１へ送る冷水の温度を一定に制御している。 In a conventional closed cycle water supply system 3 equipped with an expansion tank 2 in a hot water boiler 1 using waste heat shown in FIG. The detected temperature is controlled by the controller 5.
An on-off valve 8 of a cold water circuit 7 that passes through a hot water utilization equipment 6 such as a hot water turbine or a fluorocarbon turbine depending on a deviation from a preset water supply inlet temperature, and a hot water circuit 9 that bypasses the hot water usage equipment 6. The temperature of the cold water sent to the boiler 1 by the circulation pump 11 is controlled to be constant by adjusting the opening degree of the on-off valve 10.
しかし、ボイラ１で得られる温水の温度は、熱
源であるガス量の変動と共に変動し、一定になら
なかつた。従つて温水を温水利用設備６に有効に
利用させることができず、熱効率が低いものであ
る。 However, the temperature of the hot water obtained by the boiler 1 fluctuated with fluctuations in the amount of gas serving as the heat source, and was not constant. Therefore, the hot water cannot be effectively utilized by the hot water utilization equipment 6, resulting in low thermal efficiency.
本発明はかかる事情に鑑みなされたもので、熱
源であるガス量の変動を検出して、ボイラで得ら
れる温水の温度を一定に制御するようにした廃熱
温水ボイラに於ける出口温水温度の制御方法を提
供せんとするものである。 The present invention has been made in view of the above circumstances, and is a method for adjusting the temperature of hot water at the outlet of a waste heat hot water boiler, which detects fluctuations in the amount of gas as a heat source and controls the temperature of hot water obtained in the boiler to a constant level. The purpose is to provide a control method.
以下本発明による廃熱温水ボイラにおける出口
温水温度の制御方法を第２図によつて説明する。
図中第１図と同一符号は同一物を示すのでその説
明を省略する。ボイラ１に設けたガス流量計１２
にて排ガス流量を検出し、この排ガス流量を演算
制御器１３にボイラ給水の温度調節の演算信号と
して送り込む。またボイラ１の出口側に設けた温
度検出器１４にてボイラ１を出た温水の温度を検
出し、この温度を演算制御器１３にフイードバツ
ク信号として送り込む。一方演算制御器１３には
ボイラ１の入口側に設けた温度検出器４にてボイ
ラ１への給水入口温度が検出され、その検出温度
が送り込まれており、さらに温水利用設備６の出
口側に設けた温度検出器１５にて冷水の温度が検
出され、その検出温度が送り込まれている。 The method for controlling the outlet hot water temperature in the waste heat hot water boiler according to the present invention will be explained below with reference to FIG.
Since the same reference numerals in the figure as in FIG. 1 indicate the same parts, the explanation thereof will be omitted. Gas flow meter 12 installed in boiler 1
The exhaust gas flow rate is detected and sent to the arithmetic controller 13 as a calculation signal for temperature adjustment of boiler feed water. Further, a temperature detector 14 provided on the outlet side of the boiler 1 detects the temperature of the hot water exiting the boiler 1, and sends this temperature to the arithmetic controller 13 as a feedback signal. On the other hand, the temperature at the inlet of the water supply to the boiler 1 is detected by the temperature detector 4 installed on the inlet side of the boiler 1, and the detected temperature is sent to the arithmetic controller 13. The temperature of the cold water is detected by a temperature detector 15 provided, and the detected temperature is sent.
かくして演算制御器１３では、排ガス流量、ボ
イラ出口温水温度、ボイラ給水入口温度、温水利
用設備出口冷水温度により、排ガス流量に見合つ
たボイラ給水入口温度が演算され、この演算値に
よつて温水利用設備６を経由する冷水回路７の開
閉弁８と温水利用設備６をバイパスする温水回路
９の開閉弁１０の開度が調節され、循環ポンプ１
１にてボイラ１への給水温度がボイラ１の排ガス
流量に見合う温度に調節される結果、ボイラ１へ
送り込まれた冷水は排ガスによつて所要の温度に
上昇せしめられ、ボイラ１の出口温水温度は一定
に制御される。 In this way, the arithmetic controller 13 calculates the boiler feed water inlet temperature commensurate with the exhaust gas flow rate based on the exhaust gas flow rate, the hot water temperature at the boiler outlet, the boiler feed water inlet temperature, and the cold water temperature at the outlet of the hot water usage equipment. The opening degrees of the on-off valve 8 of the cold water circuit 7 passing through the hot water circuit 6 and the on-off valve 10 of the hot water circuit 9 bypassing the hot water utilization equipment 6 are adjusted.
1, the temperature of the water supplied to the boiler 1 is adjusted to a temperature that matches the flow rate of the exhaust gas of the boiler 1. As a result, the cold water sent to the boiler 1 is raised to the required temperature by the exhaust gas, and the temperature of the hot water at the outlet of the boiler 1 is increased. is controlled to be constant.
尚、上記実施例では、ガス流量計１２にて検出
した排ガス流量のみを、ボイラ給水の温度調節の
演算信号として演算制御器１３に送り込んでいる
が、ボイラ１にガス温度検出器を設けて排ガス温
度を検出し、この排ガス温度もボイラ給水の温度
調節の演算信号として演算制御器１３に送り込む
ようにしても良いものである。かくすることによ
りボイラ１への給水温度はより正確に調節され、
ボイラ１の出口温水温度は正確に一定に制御され
る。 In the above embodiment, only the exhaust gas flow rate detected by the gas flow meter 12 is sent to the calculation controller 13 as a calculation signal for temperature adjustment of the boiler feed water. It is also possible to detect the temperature and send this exhaust gas temperature to the calculation controller 13 as a calculation signal for temperature adjustment of the boiler feed water. By doing this, the temperature of the water supplied to the boiler 1 can be adjusted more accurately,
The hot water temperature at the outlet of the boiler 1 is precisely controlled to be constant.
以上詳記した通り本発明の廃熱温水ボイラにお
ける出口温水温度の制御方法は、熱源である排ガ
スの流量の変動を一早く検出してボイラ給水温度
を所要の温度に調節し、ボイラ出口温水の温度を
一定に制御できるので、得られる温水は熱水ター
ビン、フロンタービン等の温水利用設備に有効利
用することができて、熱効率が向上するという優
れた効果がある。 As described in detail above, the method for controlling the outlet hot water temperature in the waste heat hot water boiler of the present invention is to detect fluctuations in the flow rate of exhaust gas, which is a heat source, as soon as possible, adjust the boiler feed water temperature to the required temperature, and to control the boiler outlet hot water temperature. Since the temperature can be controlled to be constant, the obtained hot water can be effectively used in hot water utilization equipment such as hot water turbines and fluorocarbon turbines, which has the excellent effect of improving thermal efficiency.
第１図は廃熱温水ボイラにおける密閉サイクル
の給水系統を示す図、第２図は本発明の方法を実
施する廃熱温水ボイラにおける密閉サイクルの給
水系統を示す図である。
１……廃熱温水ボイラ、２……膨張タンク、３
……給水系統、４……給水入口温度検出器、５…
…制御器、６……温水利用設備、７……冷水回
路、８……開閉弁、９……温水回路、１０……開
閉弁、１１……循環ポンプ、１２……ガス流量
計、１３……演算制御器、１４……ボイラ出口温
水温度検出器、１５……温水利用設備出口冷水温
度検出器。
FIG. 1 is a diagram showing a closed cycle water supply system in a waste heat hot water boiler, and FIG. 2 is a diagram showing a closed cycle water supply system in a waste heat hot water boiler implementing the method of the present invention. 1... Waste heat hot water boiler, 2... Expansion tank, 3
...Water supply system, 4...Water supply inlet temperature detector, 5...
...Controller, 6...Hot water utilization equipment, 7...Cold water circuit, 8...Opening/closing valve, 9...Hot water circuit, 10...Opening/closing valve, 11...Circulation pump, 12...Gas flow meter, 13... ...Arithmetic controller, 14...Boiler outlet hot water temperature detector, 15...Hot water usage equipment outlet cold water temperature detector.
Claims (1)
利用設備を経由する密閉サイクルの給水系統にお
けるボイラ出口側より一部温水を温水利用設備を
バイパスする温水回路を通して抽出し、ボイラ給
水に混合してボイラ給水の温度調節を行うにおい
て、ボイラの入口側に設けた温度検出器にてボイ
ラへの給水入口温度を検出し、この給水入口温度
を演算制御器に送り込み、温水利用設備の出口側
に設けた温度検出器にて冷水の温度を検出し、こ
の冷水温度を前記演算制御器に送り込み、ボイラ
の排ガス流量をボイラに設けたガス流量計にて検
出し、この排ガス流量を前記演算制御器にボイラ
給水の温度調節の演算信号として送り込み、ボイ
ラの出口側に設けた温度検出器にてボイラの出口
温水温度を検出し、この出口温水温度を前記演算
制御器にフイードバツク信号として送り込み、演
算制御器でボイラ給水入口温度、温水利用設備出
口冷水温度、ボイラ排ガス流量、ボイラ出口温水
温度により、排ガス流量に見合つたボイラ給水入
口温水温度を演算し、この演算値により温水利用
設備を経由する冷水回路の開閉弁と温水利用設備
をバイパスする温水回路の開閉弁の開度を調節
し、ボイラへの給水温度をボイラ排ガス流量に見
合う温度に調節し、ボイラ出口温水温度を一定に
制御することを特徴とする廃熱温水ボイラにおけ
る出口温水温度制御方法。1 In a closed cycle water supply system that passes through the hot water usage equipment of a waste heat hot water boiler where the gas flow rate fluctuates, some hot water is extracted from the boiler outlet side through a hot water circuit that bypasses the hot water usage equipment and mixed with the boiler feed water. To adjust the temperature of boiler feed water, a temperature sensor installed at the inlet side of the boiler detects the temperature at the inlet of the water supply to the boiler, and this temperature is sent to the arithmetic controller, which is installed at the outlet side of the hot water utilization equipment. The temperature of the chilled water is detected by a temperature sensor, and the temperature of the chilled water is sent to the arithmetic controller.The flow rate of exhaust gas from the boiler is detected by a gas flow meter installed in the boiler, and the flow rate of the exhaust gas is sent to the arithmetic controller. It is sent as a calculation signal to adjust the temperature of the boiler feed water, the boiler outlet hot water temperature is detected by a temperature detector installed on the boiler outlet side, and this outlet hot water temperature is sent as a feedback signal to the calculation controller. The boiler feed water inlet hot water temperature commensurate with the exhaust gas flow rate is calculated using the boiler feed water inlet temperature, hot water usage equipment outlet cold water temperature, boiler exhaust gas flow rate, and boiler outlet hot water temperature. It is characterized by adjusting the opening degree of the on-off valve of the hot water circuit that bypasses the on-off valve and the hot water utilization equipment, adjusting the temperature of water supplied to the boiler to a temperature commensurate with the boiler exhaust gas flow rate, and controlling the hot water temperature at the boiler outlet at a constant level. A method for controlling outlet hot water temperature in a waste heat hot water boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037123A JPS58156147A (en) | 1982-03-09 | 1982-03-09 | Method of controlling hot water temperature at outlet of waste heat water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57037123A JPS58156147A (en) | 1982-03-09 | 1982-03-09 | Method of controlling hot water temperature at outlet of waste heat water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58156147A JPS58156147A (en) | 1983-09-17 |
| JPH0139024B2 true JPH0139024B2 (en) | 1989-08-17 |
Family
ID=12488820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57037123A Granted JPS58156147A (en) | 1982-03-09 | 1982-03-09 | Method of controlling hot water temperature at outlet of waste heat water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58156147A (en) |
-
1982
- 1982-03-09 JP JP57037123A patent/JPS58156147A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58156147A (en) | 1983-09-17 |
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