JP2022166344A - Boiler device - Google Patents

Boiler device Download PDF

Info

Publication number
JP2022166344A
JP2022166344A JP2021071490A JP2021071490A JP2022166344A JP 2022166344 A JP2022166344 A JP 2022166344A JP 2021071490 A JP2021071490 A JP 2021071490A JP 2021071490 A JP2021071490 A JP 2021071490A JP 2022166344 A JP2022166344 A JP 2022166344A
Authority
JP
Japan
Prior art keywords
boiler
water supply
water
flow rate
feedwater
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
JP2021071490A
Other languages
Japanese (ja)
Inventor
孝太郎 藤原
Kotaro Fujiwara
卓哉 鈴木
Takuya Suzuki
正成 木下
Masashige Kinoshita
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.)
Hirakawa Corp
Original Assignee
Hirakawa Corp
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 Hirakawa Corp filed Critical Hirakawa Corp
Priority to JP2021071490A priority Critical patent/JP2022166344A/en
Publication of JP2022166344A publication Critical patent/JP2022166344A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

To achieve stabilization of water supply to a boiler, and to achieve high efficiency and high steam amount of a boiler device.SOLUTION: A boiler device includes a heat exchange device 13 which heats water supply to a boiler 11 by heat exchange with exhaust gas 14 from the boiler 11. Also, it has a water supply flow rate stabilization device for stabilizing the flow rate of water supply 17 which is supplied to the boiler 11 from the heat exchange device 13. The water supply flow rate stabilization device can be a form of an orifice 32 and can be a form of valves 33, 34, 35. Or the water supply flow rate stabilization device can be the one which includes a water supply pump for supplying water to the boiler, and a control device for controlling the operation of this water supply pump. This control device is the one that allows the water supply pump to operate continuously, and it changes the operation state of the water supply pump according to the water level fluctuation of the boiler.SELECTED DRAWING: Figure 1

Description

本発明はボイラ装置に関する。 The present invention relates to boiler equipment.

ボイラ装置の高効率化や高蒸発量化などを図る場合に、ボイラ単体でこれを実行することは困難である。このため、ボイラの燃焼排ガスを利用してエコノマイザなどにより給水を加温することや、系外からの熱により給水を加温することや、ユーザからの高温のドレンを回収し給水として再利用することで給水を加温することなどが行われている（たとえば特許文献１）。加温された給水は、ポンプに代表される給水装置によって、間欠的にボイラに圧送される。 When attempting to improve the efficiency of a boiler or increase the amount of evaporation, it is difficult to achieve this with a single boiler. For this reason, the boiler flue gas is used to heat the feed water with an economizer or the like, heat from outside the system is used to heat the feed water, or high-temperature drain from the user is collected and reused as feed water. The water supply is heated by heating the water (for example, Patent Literature 1). The heated feedwater is intermittently pumped to the boiler by a water supply device typified by a pump.

特開２０２０－１４８４４６号公報JP 2020-148446 A

このようにして給水を加温する場合において、たとえばエコノマイザなどの加熱装置を用いた場合には、その加熱装置の内部で給水が蒸発することがある。これは、上述のように給水はボイラへ間欠的に圧送されるのに対して、ボイラからの排ガスは連続的に排出されるため、圧送が行われていない間にエコノマイザの内部の給水が過熱状態になるためである。その結果、ボイラへの給水が気液混合流体となって、その体積が変化したり、水と蒸気とが分離状態で圧送されたりして、流量が不安定になってしまう。すると、ボイラの水位が変動し、水位が低下した場合には、ボイラ装置の低水位遮断機能が作動してボイラの運転を停止させることがあり、また水位が上昇すると、ボイラ内の水が蒸気とともにユーザ側に排出されるキャリーオーバを発生することがあり、いずれの場合もボイラの能力低下に繋がってしまう。 When the feed water is heated in this way, if a heating device such as an economizer is used, the feed water may evaporate inside the heating device. This is because the feed water is intermittently pumped to the boiler as described above, whereas the flue gas from the boiler is discharged continuously, so the feed water inside the economizer is overheated while pumping is not being performed. to be in a state. As a result, the water supplied to the boiler becomes a gas-liquid mixed fluid, and its volume changes, and the water and steam are pumped in a separated state, resulting in an unstable flow rate. As a result, the water level in the boiler fluctuates, and if the water level drops, the low water level cutoff function of the boiler equipment may operate to stop the operation of the boiler. At the same time, a carryover that is discharged to the user side may occur, and in either case, it will lead to a decrease in boiler performance.

そこで本発明は、このような問題点を解決して、ボイラへの給水の供給の安定化を図って、ボイラ装置の高効率化や高蒸発量化などを図るようにすることを目的とする。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve such problems, stabilize the supply of water to the boiler, and improve the efficiency and evaporation of the boiler.

この目的を達成するため本発明のボイラ装置は、ボイラからの排ガスとの熱交換によって、前記ボイラへの給水を加熱する熱交換装置を有し、かつ、前記熱交換装置からボイラへ供給される給水の流量を安定化させる給水流量安定化装置を有することを特徴とする。 In order to achieve this object, the boiler apparatus of the present invention has a heat exchange apparatus for heating feed water to the boiler by heat exchange with exhaust gas from the boiler, and feed water is supplied from the heat exchange apparatus to the boiler. It is characterized by having a water supply flow rate stabilizing device for stabilizing the flow rate of water supply.

本発明のボイラ装置によれば、給水流量安定化装置が、熱交換装置とボイラとの間に設けられたオリフィスであることが好適である。 According to the boiler apparatus of the present invention, it is preferable that the feed water flow rate stabilizing device is an orifice provided between the heat exchange device and the boiler.

本発明のボイラ装置によれば、給水流量安定化装置が、熱交換装置とボイラとの間に設けられた弁であることが好適であり、また給水流量安定化装置は複数の流量調整弁が並列に設けられたものであることが好適である。 According to the boiler apparatus of the present invention, the feed water flow stabilizing device is preferably a valve provided between the heat exchange device and the boiler. It is preferable that they are provided in parallel.

あるいは、本発明のボイラ装置によれば、給水流量安定化装置は、ボイラへの給水のための給水ポンプと、この給水ポンプの運転を制御するための制御装置とを有し、この制御装置は、給水ポンプを連続運転させるものであるとともに、ボイラの水位変動に応じて給水ポンプの運転状態を変更させるものであることが好適である。 Alternatively, according to the boiler apparatus of the present invention, the feedwater flow stabilizing device has a feedwater pump for supplying feedwater to the boiler and a control device for controlling the operation of the feedwater pump, and the control device comprises Preferably, the feedwater pump is operated continuously and the operating state of the feedwater pump is changed in accordance with fluctuations in the water level of the boiler.

本発明によれば、熱交換装置からボイラへ供給される給水の流量を安定化させる給水流量安定化装置を有するため、ボイラへの給水の流量を安定化させることができ、このためボイラ内の水位の変動を緩和して、ボイラ装置の高効率化や高蒸発量化などを図ることができる。 According to the present invention, since the feedwater flow stabilizing device for stabilizing the flowrate of feedwater supplied from the heat exchange device to the boiler is provided, the flowrate of feedwater to the boiler can be stabilized. Fluctuations in the water level can be mitigated to improve the efficiency of the boiler and increase the amount of evaporation.

本発明の実施の形態のボイラ装置の構成を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the boiler apparatus of embodiment of this invention. 従来技術に基づくボイラ水位の変動例を示す図である。FIG. 10 is a diagram showing an example of variation of the boiler water level based on the conventional technology; 図１のボイラ装置についてのボイラ水位の変動例を示す図である。2 is a diagram showing an example of boiler water level variation in the boiler apparatus of FIG. 1; FIG. 本発明の他の実施の形態のボイラ装置の構成を示す図である。It is a figure which shows the structure of the boiler apparatus of other embodiment of this invention.

図１に示すボイラ装置において、１１はボイラ、１０はボイラ１１からの蒸気送給路、１２はボイラ１１からの排ガス路である。排ガス路１２には熱交換装置としてのエコノマイザ１３が設けられており、ボイラ１１からの燃焼排ガス１４は、エコノマイザ１３を通過したうえで系外に排出されるように構成されている。 In the boiler apparatus shown in FIG. 1 , 11 is a boiler, 10 is a steam supply line from the boiler 11 , and 12 is an exhaust gas line from the boiler 11 . An economizer 13 as a heat exchange device is provided in the exhaust gas passage 12, and the combustion exhaust gas 14 from the boiler 11 is configured to pass through the economizer 13 and then be discharged outside the system.

１５はボイラ１１への給水を貯留する給水タンクで、ボイラ１１への給水路１６が接続されている。給水路１６は、エコノマイザ１３に連結されたうえでボイラ１１へ接続されている。このため、給水タンク１５からの給水１７は、エコノマイザ１３を通過したうえでボイラ１１へ導かれるように構成されている。給水路１６における給水タンク１５とエコノマイザ１３との間の部分には、上流側から順に、ストレーナ１８と、給水ポンプ１９と、逆止弁２０とが設けられている。 A water supply tank 15 stores water supply to the boiler 11 and is connected to a water supply line 16 to the boiler 11 . The water supply line 16 is connected to the economizer 13 and then to the boiler 11 . Therefore, the water supply 17 from the water supply tank 15 is configured to be guided to the boiler 11 after passing through the economizer 13 . A strainer 18 , a water supply pump 19 , and a check valve 20 are provided in order from the upstream side in a portion of the water supply path 16 between the water supply tank 15 and the economizer 13 .

図示は省略するが、蒸気送給路１０には気水分装置が設けられており、この気水分離装置からの高圧高温水のためのドレン回収路２４が、回収装置２５へ導かれている。回収装置２５には、回収したドレン水２６を給水として再利用するために給水路１６へ送るためのドレン供給路２７が接続されている。このドレン供給路２７は、給水路１６における逆止弁２０とエコノマイザ１３との間の部分に連結されている。またドレン供給路２７には、上流側から順に、回収装置２５からのドレン水２６を供給路１６に送り込むためにこのドレン水２６を加圧するためのブースタポンプ２８と、流量調整弁２９と、逆止弁３０とが設けられている。 Although not shown, the steam supply path 10 is provided with a steam/moisture device, and a drain recovery path 24 for high-pressure, high-temperature water from this steam/water separation device is led to a recovery device 25 . A drain supply path 27 is connected to the recovery device 25 for sending the recovered drain water 26 to the water supply path 16 for reuse as water supply. The drain supply passage 27 is connected to a portion of the water supply passage 16 between the check valve 20 and the economizer 13 . The drain supply path 27 includes, in order from the upstream side, a booster pump 28 for pressurizing the drain water 26 from the recovery device 25 so as to send the drain water 26 to the supply path 16, a flow control valve 29, a reverse A stop valve 30 is provided.

図１に示されるボイラ装置において、給水路１６におけるエコノマイザ１３とボイラ１１との間の部分には、特にボイラ１１の直前の部分には、給水流量安定化装置としてのオリフィス３２が設けられている。このオリフィス３２は、給水路１６を通ってボイラ１１へ送り込まれる給水１７の流量調整すなわち流量制限を行うためのものである。 In the boiler apparatus shown in FIG. 1, an orifice 32 is provided as a feed water flow rate stabilizing device in the portion between the economizer 13 and the boiler 11 in the feed water passage 16, particularly in the portion immediately before the boiler 11. . This orifice 32 is for adjusting the flow rate of the feed water 17 fed into the boiler 11 through the feed water passage 16, ie, limiting the flow rate.

このような構成において、ボイラ１１を運転する際には、給水ポンプ１９を間欠的に運転することによって、給水タンク１５からの給水１７を間欠的にボイラ１１に供給する。ボイラ１１では、図示を省略した燃焼装置がほぼ連続的に運転され、この燃焼装置の運転により発生した燃焼排ガス１４が排ガス路１２へ排出される。燃焼装置の運転により発生した蒸気は、蒸気送給路１０を経て利用先へ供給される。 In such a configuration, when the boiler 11 is operated, the water supply pump 19 is intermittently operated to intermittently supply the water supply 17 from the water supply tank 15 to the boiler 11 . In the boiler 11 , a combustion device (not shown) is operated substantially continuously, and flue gas 14 generated by the operation of this combustion device is discharged to an exhaust gas passage 12 . Steam generated by the operation of the combustion device is supplied to the user through the steam supply line 10 .

蒸気送給路１０に設けられた気液分離装置からの高温水は、ドレン回収路２４を経て回収装置２５に回収される。そして回収装置２５からの高温のドレン水２６は、すなわち熱回収を行った状態のドレン水２６は、必要に応じて、給水タンク１５からの給水１７と一緒に、給水１７としてエコノマイザ１３に供給される。そして、給水１７は、エコノマイザ１３を通過することによって、燃焼排ガス１４との熱交換により熱回収し、そのうえでボイラ１１に供給される。 The high-temperature water from the gas-liquid separation device provided in the steam supply path 10 is recovered by the recovery device 25 through the drain recovery path 24 . The high-temperature drain water 26 from the recovery device 25, that is, the drain water 26 in a state where heat recovery has been performed, is supplied to the economizer 13 as the water supply 17 together with the water supply 17 from the water supply tank 15 as needed. be. By passing through the economizer 13 , the feed water 17 recovers heat through heat exchange with the flue gas 14 and is then supplied to the boiler 11 .

これによれば、燃焼排ガス１４に含まれる熱エネルギと、気液分離装置から回収された高温のドレン水２６に含まれる熱エネルギとを給水１７により回収し、そのうえでこの給水１７がボイラ１１に供給される。その結果、ボイラ装置の高効率化、高蒸発量化を図ることができる。 According to this, the thermal energy contained in the flue gas 14 and the thermal energy contained in the high-temperature drain water 26 recovered from the gas-liquid separation device are recovered by the feed water 17, and then the feed water 17 is supplied to the boiler 11. be done. As a result, it is possible to increase the efficiency of the boiler and increase the amount of evaporation.

さらに、図示のボイラ装置においては、給水路１６におけるエコノマイザ１３とボイラ１１との間の部分にオリフィス３２が設けられているため、ボイラ１１に送られる給水１７の流量変動を低減させることができる。つまり、上述のように給水ポンプ１９は間欠的に運転されるものであるが、この給水ポンプ１９が運転を停止することで、エコノマイザ１３の内部で給水１７が流動せずに滞留している場合には、その滞留している給水１７は、連続運転しているボイラ１１からの燃焼排ガスによって常に熱を受けることになる。このため、エコノマイザ１３の内部で給水が蒸発することがあり、この蒸発が起こると給水路１６に気液混合流体が発生し、すなわち給水１７と蒸発した蒸気とを含む流体となって、給水ポンプ１９による圧送を行っただけでは流量が大きく変動することが避けられないが、本発明によれば、そのような場合であってもオリフィス３２によって給水流量の安定化を図ることができる。これによって、ボイラ１１の水位変動を緩和させることができ、それにもとづくボイラ装置のいっそうの高効率化、高蒸発量化を図ることができる。 Furthermore, in the illustrated boiler apparatus, since the orifice 32 is provided in the portion between the economizer 13 and the boiler 11 in the water supply passage 16, the flow rate fluctuation of the water supply 17 sent to the boiler 11 can be reduced. In other words, although the water supply pump 19 is intermittently operated as described above, when the water supply pump 19 stops operating, the water supply 17 does not flow and remains inside the economizer 13. In the meantime, the stagnant feed water 17 is always heated by the flue gas from the boiler 11 in continuous operation. For this reason, the feed water may evaporate inside the economizer 13, and when this evaporation occurs, a gas-liquid mixed fluid is generated in the feed water passage 16, that is, it becomes a fluid containing the feed water 17 and the evaporated steam, and the feed water pump Although it is unavoidable that the flow rate fluctuates greatly only by pumping by 19, according to the present invention, the orifice 32 can stabilize the flow rate of water supply even in such a case. As a result, fluctuations in the water level of the boiler 11 can be mitigated, and based on this, the efficiency of the boiler apparatus can be further improved and the amount of evaporation can be increased.

図２は、図１のボイラ装置からオリフィス３２を取り除いたときのボイラ１１の水位変動を例示する。横軸は給水している時間である。縦軸はボイラ１１内の水位変動であり、水位は設定水位（４００ｍｍ）をゼロとして表記し、変動値を設定水位から上下に目盛っている。図示のように大幅な水位変動が発生していることが理解される。 FIG. 2 illustrates water level fluctuations in boiler 11 when orifice 32 is removed from the boiler apparatus of FIG. The horizontal axis is the water supply time. The vertical axis represents the fluctuation of the water level in the boiler 11. The water level is expressed with the set water level (400 mm) as zero, and the fluctuation values are scaled upward and downward from the set water level. As shown in the figure, it is understood that a large water level fluctuation has occurred.

図３は、図１のボイラ装置すなわちオリフィス３２を設けたものについての、ボイラ１１の水位変動を例示するものである。図示のように、図２の場合に比べて水位の変動が効果的に抑制されていることを理解することができる。 FIG. 3 illustrates water level fluctuations in boiler 11 for the boiler apparatus of FIG. As shown in the figure, it can be understood that the fluctuation of the water level is effectively suppressed as compared with the case of FIG.

図４は、本発明の他の実施の形態のボイラ装置の要部の構成を示す。この図４の実施の形態においては、給水流量安定化装置として、図１の実施の形態のオリフィス３２に代えて複数の弁を有するものが示されている。図示の例では、エコノマイザ１３とボイラ１１との間における給水路１６の部分に、第１弁３３と、第２弁３４と、第３弁３５とが並列にすなわち互いに分岐した状態で、設置されている。 FIG. 4 shows the configuration of the essential parts of a boiler apparatus according to another embodiment of the present invention. In the embodiment of FIG. 4, a water supply flow stabilizing device is shown having a plurality of valves instead of the orifice 32 of the embodiment of FIG. In the illustrated example, a first valve 33, a second valve 34, and a third valve 35 are installed in parallel, that is, in a branched state, in the portion of the water supply passage 16 between the economizer 13 and the boiler 11. ing.

これらの弁３３、３４、３５を制御する方法は、次の通りである。すなわち、ボイラ１１が低燃焼の状態にあるときには、第１弁３３を開く。このとき、第２弁３４および第３弁３５は閉じている。すると、第１弁３３を通した少流量の給水１７がボイラ１１に供給され、ボイラの低燃焼状態に応じた適量の給水を行うことができる。ボイラ１１が中燃焼の状態にあるときには、第１弁３３と第２弁３４とを開くとともに、第３弁３５は閉じている状態を継続する。これによって、ボイラ１１が低燃焼の状態にあるときに比べて多量の給水１７をボイラに供給することができ、ボイラ１１の中燃焼状態に応じた適量の給水を行うことができる。ボイラ１１が高燃焼の状態にあるときには、すべての弁３３、３４、３５を開く。すると、ボイラ１１が中燃焼の状態にあるときに比べてさらに多量の給水１７をボイラ１１に供給することができ、ボイラ１１の高燃焼状態に応じた適量の給水を行うことができる。しかも、給水１７が弁３３、３４、３５を通過するものであるため、そのときに圧損が生じて、オリフィス３２を設けたときと同様に給水流量の安定化を図ることができる。しかも、上記のようにボイラ１１の燃焼状態に応じた最適な流量でボイラ１１に給水することができる。 The method of controlling these valves 33, 34, 35 is as follows. That is, when the boiler 11 is in a low combustion state, the first valve 33 is opened. At this time, the second valve 34 and the third valve 35 are closed. Then, a small flow rate of water 17 is supplied to the boiler 11 through the first valve 33, and an appropriate amount of water can be supplied according to the low combustion state of the boiler. When the boiler 11 is in the medium combustion state, the first valve 33 and the second valve 34 are opened, and the third valve 35 remains closed. As a result, a larger amount of water 17 can be supplied to the boiler than when the boiler 11 is in the low combustion state, and an appropriate amount of water can be supplied according to the medium combustion state of the boiler 11 . All valves 33, 34, 35 are open when the boiler 11 is at high firing. As a result, a larger amount of water 17 can be supplied to the boiler 11 than when the boiler 11 is in a medium combustion state, and an appropriate amount of water can be supplied according to the high combustion state of the boiler 11. - 特許庁Moreover, since the water supply 17 passes through the valves 33, 34, and 35, pressure loss occurs at that time, and the flow rate of the water supply can be stabilized in the same manner as when the orifice 32 is provided. Moreover, water can be supplied to the boiler 11 at an optimum flow rate according to the combustion state of the boiler 11 as described above.

なお、本発明によれば、上記したオリフィス３２や弁３３、３４、３５に代えて、給水流量を安定化させるための他の適宜の装置を設けることもできる。 According to the present invention, instead of the orifice 32 and the valves 33, 34, 35 described above, other suitable devices for stabilizing the water supply flow rate can be provided.

すなわち、本発明のさらに他の実施の形態について、以下に説明する。図示は省略するが、この実施の形態では、エコノマイザからボイラまでの給水路にはオリフィスも弁も設置しない。それに代えて、給水ポンプを制御するための制御装置が設けられる。この制御装置は、給水ポンプを連続運転させるとともに、ボイラからの蒸発量や、蒸気の発生によるボイラの水位の変動を検知し、その検知信号にもとづいてＰＩＤ制御などにより給水ポンプの運転状態を制御するものである。 That is, still another embodiment of the present invention will be described below. Although illustration is omitted, neither an orifice nor a valve is installed in the water supply passage from the economizer to the boiler in this embodiment. Alternatively, a controller is provided for controlling the water supply pump. This controller continuously operates the feedwater pump, detects the amount of evaporation from the boiler and changes in the water level of the boiler due to the generation of steam, and controls the operating state of the feedwater pump by PID control etc. based on the detection signal. It is something to do.

このような構成であると、制御装置によって給水ポンプを連続運転させるものであるため、連続的な給水が可能であり、このためエコノマイザにおいて給水が滞留することを原因とする蒸気の発生を防止することができて、ボイラへの給水量を安定化させることができ、しかも給水ポンプの運転状態を制御することで、燃焼状態に応じてボイラの水位を安定化させることもできる。 With such a configuration, since the water supply pump is operated continuously by the control device, continuous water supply is possible, and therefore the generation of steam caused by the water supply stagnation in the economizer is prevented. The amount of water supplied to the boiler can be stabilized, and by controlling the operating state of the water supply pump, the water level of the boiler can be stabilized according to the combustion state.

以上のように本発明によると、オリフィス３２や、弁３３、３４、３５や、図示を省略した制御装置などの給水流量安定化装置によって、ボイラ１１への給水の安定化を図ることができ、このためボイラのいっそうの高効率化や高蒸発量化を図ることができる。 As described above, according to the present invention, the orifice 32, the valves 33, 34, and 35, and the water supply flow rate stabilizing device such as the control device (not shown) can stabilize the water supply to the boiler 11. For this reason, it is possible to further improve the efficiency of the boiler and increase the amount of evaporation.

１１ ボイラ
１３ エコノマイザ（熱交換装置）
１４ 燃焼排ガス
１６ 給水路
１７ 給水
１９ 給水ポンプ
２６ ドレン水
３２ オリフィス（給水流量安定化装置）
３３ 第１弁（給水流量安定化装置）
３４ 第２弁（給水流量安定化装置）
３５ 第３弁（給水流量安定化装置） 11 boiler 13 economizer (heat exchange device)
14 flue gas 16 water supply channel 17 water supply 19 water supply pump 26 drain water 32 orifice (water supply flow rate stabilizing device)
33 1st valve (water supply flow rate stabilizer)
34 Second valve (water supply flow rate stabilizer)
35 Third valve (water supply flow rate stabilizer)

Claims (5)

ボイラからの排ガスとの熱交換によって、前記ボイラへの給水を加熱する熱交換装置を有し、かつ、前記熱交換装置からボイラへ供給される給水の流量を安定化させる給水流量安定化装置を有することを特徴とするボイラ装置。 A feedwater flow stabilizing device that has a heat exchange device that heats the feedwater to the boiler by heat exchange with the exhaust gas from the boiler, and stabilizes the flow rate of the feedwater that is supplied from the heat exchange device to the boiler. A boiler device characterized by comprising: 給水流量安定化装置が、熱交換装置とボイラとの間に設けられたオリフィスであることを特徴とする請求項１記載のボイラ装置。 2. The boiler apparatus according to claim 1, wherein the feedwater flow stabilizing device is an orifice provided between the heat exchange device and the boiler. 給水流量安定化装置が、熱交換装置とボイラとの間に設けられた弁であることを特徴とする請求項１記載のボイラ装置。 2. The boiler apparatus according to claim 1, wherein the feed water flow rate stabilizing device is a valve provided between the heat exchange device and the boiler. 給水流量安定化装置は、複数の流量調整弁が並列に設けられたものであることを特徴とする請求項３記載のボイラ装置。 4. The boiler apparatus according to claim 3, wherein the feed water flow stabilizing device is provided with a plurality of flow control valves in parallel. 給水流量安定化装置は、ボイラへの給水のための給水ポンプと、この給水ポンプの運転を制御するための制御装置とを有し、この制御装置は、給水ポンプを連続運転させるものであるとともに、ボイラの水位変動に応じて給水ポンプの運転状態を変更させるものであることを特徴とする請求項１記載のボイラ装置。 The feedwater flow rate stabilizing device has a feedwater pump for supplying feedwater to the boiler and a control device for controlling the operation of the feedwater pump, and the control device continuously operates the feedwater pump. 2. The boiler apparatus according to claim 1, wherein the operation state of the feed water pump is changed in accordance with fluctuations in the water level of the boiler.
JP2021071490A 2021-04-21 2021-04-21 Boiler device Pending JP2022166344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021071490A JP2022166344A (en) 2021-04-21 2021-04-21 Boiler device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021071490A JP2022166344A (en) 2021-04-21 2021-04-21 Boiler device

Publications (1)

Publication Number Publication Date
JP2022166344A true JP2022166344A (en) 2022-11-02

Family

ID=83851645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021071490A Pending JP2022166344A (en) 2021-04-21 2021-04-21 Boiler device

Country Status (1)

Country Link
JP (1) JP2022166344A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074209A (en) * 1993-06-17 1995-01-10 Toshiba Corp Steam generator
JPH07260103A (en) * 1994-03-23 1995-10-13 Miura Co Ltd High efficiency heat recovery system for waste heat recovery boiler
JPH08240301A (en) * 1995-03-03 1996-09-17 Toshiba Corp Drum type boiler water supply control device
JP2008196833A (en) * 2007-02-15 2008-08-28 Mitsubishi Heavy Ind Ltd Turbine equipment, exhaust heat recovering boiler apparatus and operation method for turbine equipment
JP2013148347A (en) * 2013-03-11 2013-08-01 Toshiba Corp Water supply control device, and water supply control method
JP2014190639A (en) * 2013-03-28 2014-10-06 Samson Co Ltd Feed water preheating boiler
JP2016183790A (en) * 2015-03-25 2016-10-20 三浦工業株式会社 Boiler device
JP2018194287A (en) * 2017-05-16 2018-12-06 株式会社サムソン Boiler for adjusting water supply amount

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074209A (en) * 1993-06-17 1995-01-10 Toshiba Corp Steam generator
JPH07260103A (en) * 1994-03-23 1995-10-13 Miura Co Ltd High efficiency heat recovery system for waste heat recovery boiler
JPH08240301A (en) * 1995-03-03 1996-09-17 Toshiba Corp Drum type boiler water supply control device
JP2008196833A (en) * 2007-02-15 2008-08-28 Mitsubishi Heavy Ind Ltd Turbine equipment, exhaust heat recovering boiler apparatus and operation method for turbine equipment
JP2013148347A (en) * 2013-03-11 2013-08-01 Toshiba Corp Water supply control device, and water supply control method
JP2014190639A (en) * 2013-03-28 2014-10-06 Samson Co Ltd Feed water preheating boiler
JP2016183790A (en) * 2015-03-25 2016-10-20 三浦工業株式会社 Boiler device
JP2018194287A (en) * 2017-05-16 2018-12-06 株式会社サムソン Boiler for adjusting water supply amount

Similar Documents

Publication Publication Date Title
EP2703609B1 (en) Steam turbine plant and control method of the same
JP5008134B2 (en) Water supply preheating boiler
KR102332878B1 (en) Oxy boiler power plant oxygen feed system heat integration
JP2022166344A (en) Boiler device
JP4876114B2 (en) Steam supply method and system for steamer
JP2008248808A (en) Power generation system
JP2008223701A (en) Control device of process steam utilizing steam turbine
JP4905941B2 (en) Waste heat recovery boiler and its steam pressure control method
JP2009275997A (en) Condensate recovery device
JP2622096B2 (en) Combined refuse power plant with controllable feedwater temperature
JP4266861B2 (en) Boiler deaerator
CN105626172B (en) A kind of steam turbine generating equipment
JP2013053823A (en) Supply water preheating boiler
JP2949287B2 (en) Auxiliary steam extraction method for waste heat recovery boiler
JP4127541B2 (en) Power generation / desalination complex plant and operation method thereof
JP2008223700A (en) Control device of process steam utilizing steam turbine
JPS60219404A (en) Stabilizing device of deaerator output
JP2008223702A (en) Control device of process steam utilizing steam turbine
JP2637194B2 (en) Combined plant startup bypass system and its operation method
JPH11344203A (en) Method for recovering steam air heater drain
JPH05240402A (en) Method of operating waste heat recovery boiler
JP2021116942A (en) Water supply device for boiler
JP6415219B2 (en) Boiler, combined cycle plant and boiler operation method
JP2000054808A (en) Combined power generation system
JP2015102258A (en) Steam generation system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20240411

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20241120

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20241210

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20250205

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20250513