JP3217927B2 - Makeup water supply system for power plant - Google Patents
Makeup water supply system for power plantInfo
- Publication number
- JP3217927B2 JP3217927B2 JP27351894A JP27351894A JP3217927B2 JP 3217927 B2 JP3217927 B2 JP 3217927B2 JP 27351894 A JP27351894 A JP 27351894A JP 27351894 A JP27351894 A JP 27351894A JP 3217927 B2 JP3217927 B2 JP 3217927B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- condenser
- makeup water
- main pipe
- make
- 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 - Fee Related
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- Engine Equipment That Uses Special Cycles (AREA)
- Pipeline Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発電プラントの補給水
供給システムに係り、特に複数軸から構成される複合発
電プラントの復水器部の補給水供給システムに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a make-up water supply system for a power plant, and more particularly to a make-up water supply system for a condenser section of a combined power plant comprising a plurality of shafts.
【０００２】[0002]
【従来の技術】複数軸から構成されるこの種複合発電プ
ラントについての文献としては、例えば「複合発電」
（火力原子力発電技術協会編，４４頁）が挙げられる。
複合発電プラントは、単なる火力プラントと異なり複数
のパワートレイン(軸)から成り立っている。すなわち、
ガスタービン，このガスタービンからの排ガスを熱源と
して蒸気を発生させる排熱回収ボイラ、それに排熱回収
ボイラで発生した蒸気により駆動される蒸気タービンと
から構成される複数のパワートレイン（軸）で構成され
ている。2. Description of the Related Art Documents on such a combined cycle power plant composed of a plurality of shafts include, for example, "combined cycle power".
(Thermal Nuclear Power Technology Association, p. 44).
A combined cycle power plant is made up of a plurality of power trains (axes) unlike a mere thermal power plant. That is,
Consists of a plurality of power trains (shafts) consisting of a gas turbine, an exhaust heat recovery boiler that generates steam using the exhaust gas from the gas turbine as a heat source, and a steam turbine driven by the steam generated by the exhaust heat recovery boiler Have been.
【０００３】このため、一般にユーティリティは共通設
備としており、復水器へ水を補給する補給水タンクおよ
び補給水母管も複数の軸で共用するシステムとしている
のが普通である。したがって、各軸の復水器への補給水
の供給も補給水母管から分岐し、供給する構成となって
いる。[0003] For this reason, the utility is commonly used as a common facility, and a system is commonly used in which a makeup water tank and a makeup water main pipe for supplying water to the condenser are shared by a plurality of shafts. Therefore, the supply of make-up water to the condenser of each shaft is also branched off from the make-up water main pipe and supplied.
【０００４】[0004]
【発明が解決しようとする課題】このように複数の復水
器に対して共通の補給水母管を設置し、この補給水母管
より分岐して各々の復水器へ補給水を供給する補給水系
統を有する発電プラントでは、その系統または配管構
成、あるいは補給水系統の運転条件によっては停止中の
復水器から運転中の復水器へ補給水母管を介して空気の
流出が起こり得る。As described above, a common makeup water main pipe is provided for a plurality of condensers, and the makeup water is branched from the makeup water main pipe to supply makeup water to each condenser. In a power plant having a system, outflow of air from a stopped condenser to a running condenser via a makeup water main pipe may occur depending on the system or piping configuration, or the operating conditions of the makeup water system.
【０００５】この空気が流出する条件としては、補給水
母管の流量増加による圧力損失増大に伴う補給水母管の
圧力低下が主な要因である。これにより、従来のこの種
プラントにおいては、停止中復水器から空気が流出して
運転中の復水器に流入し、運転中の復水器に真空トリッ
プを生じさせ、プラント稼働率の低下を招くきらいがあ
った。[0005] The main factor of this air outflow is a decrease in the pressure of the makeup water main pipe due to an increase in pressure loss due to an increase in the flow rate of the makeup water main pipe. As a result, in this type of conventional plant, air flows out of the condenser during stoppage and flows into the condenser during operation, causing a vacuum trip to the condenser during operation, thereby lowering the plant operation rate. I was inviting.
【０００６】本発明はこれに鑑みなされたもので、その
目的とするところは、構成簡単にして停止中の復水器か
ら運転中の復水器への補給水母管を介しての空気の流出
を回避し、運転中の復水器に真空トリップを生じさせる
ことのないこの種発電プラントの補給水供給システムを
提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and it is an object of the present invention to simplify the construction and to make the outflow of air from a stopped condenser to a running condenser through a makeup water main pipe. It is an object of the present invention to provide a make-up water supply system for such a power plant which avoids the above problem and does not cause a vacuum trip in the operating condenser.
【０００７】[0007]
【課題を解決するための手段】すなわち本発明は、複数
の復水器を備え、この夫々の復水器へ水を補給する補給
水系統が、補給水母管から分岐して供給されるように形
成されている発電プラントの補給水供給システムにおい
て、前記補給水母管と復水器との間に、停止中の復水器
から運転中の復水器へ空気が流出することを防止する逆
止弁を設けるようになし、所期の目的を達成するように
したものである。That is, the present invention comprises a plurality of condensers, and a makeup water system for supplying water to each of the condensers is provided so as to be branched from a makeup water main pipe. In the make-up water supply system of the formed power plant, between the make-up water main pipe and the condenser, a check to prevent air from flowing from the stopped condenser to the operating condenser. A valve was provided to achieve the intended purpose.
【０００８】[0008]
【作用】すなわちこのように形成された発電プラントの
補給水供給システムであると、補給水母管と復水器との
間に、停止中の復水器から運転中の復水器へ空気が流出
することを防止する逆止弁が設けられていることから、
両者間，すなわち停止中の復水器および運転中の復水器
間では、空気の流通は直接的に防止され、また補給水母
管と復水器間の補給水供給系に空気流通時にその流通を
防止する逆止弁が設けられるだけであり、その構成は非
常に簡素である。In other words, in the makeup water supply system of the power plant formed as described above, air flows from the stopped condenser to the operating condenser between the makeup water main pipe and the condenser. Is provided with a check valve to prevent
Between the two, that is, between the condenser being stopped and the condenser being operated, the air circulation is directly prevented, and the air circulation is made during the air circulation to the makeup water supply system between the makeup water main pipe and the condenser. Is merely provided with a check valve, and the configuration is very simple.
【０００９】[0009]
【実施例】以下、図示した実施例に基づいて本発明を詳
細に説明するが、その前に図８で復水器補給水系統の説
明および停止中の復水器から運転中の復水器への空気流
出の原理の説明をすると、復水器補給水系統は、補給
水を貯蔵・供給するための補給水タンク３、補給水タ
ンクから各軸の復水器へ補給水を分配するための補給水
母管４、補給水母管から分岐し各軸の復水器へ補給水
を供給するための補給水ライン５，６、復水器への補
給水の供給を調節するための自動弁７、蒸気タービン
（図示しない）から排出される蒸気を凝縮するための復
水器１，２、および補給水タンクから復水器へ補給水
を強制移送するための補給水ポンプ１１より構成されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiment. Prior to that, FIG. 8 shows a description of a condenser make-up water system and a condenser from a stopped condenser to an operating condenser. To explain the principle of air outflow to the condenser water supply system, the supply water tank 3 for storing and supplying makeup water, and the distribution of makeup water from the makeup water tank to the condensers of each axis. Make-up water main pipe 4, make-up water lines 5 and 6 for branching from the make-up water main pipe and supplying make-up water to the condensers of each axis, and an automatic valve 7 for adjusting supply of make-up water to the condenser And condensers 1 and 2 for condensing steam discharged from a steam turbine (not shown), and a makeup water pump 11 for forcibly transferring makeup water from a makeup water tank to the condenser. .
【００１０】復水器への補給水は、補給水タンク３より
補給水母管４および各軸の補給水ライン５，６を通って
復水器１，２に供給される。複合発電プラントでは複数
のパワートレイン（軸）から構成されているため復水器
も軸数と同数設置される。ユーティリティは共通設備と
しているため補給水母管４から各軸の復水器へ分岐する
構成となっている。なお、補給水ポンプ１１は補給水母
管４をいったんバイパスする構成で設置され、自動弁７
は各軸の補給水ラインに設置される。The make-up water to the condenser is supplied from the make-up water tank 3 to the condensers 1 and 2 through the make-up water main pipe 4 and the make-up water lines 5 and 6 of each axis. Since a combined cycle power plant is composed of a plurality of power trains (shafts), the same number of condensers are installed as the number of shafts. Since the utility is a common facility, it is configured to branch from the make-up water main pipe 4 to the condenser of each axis. The make-up water pump 11 is installed so as to once bypass the make-up water main pipe 4, and the automatic valve 7
Is installed in the makeup water line of each axis.
【００１１】図８では復水器１が運転中で真空状態、復
水器２が停止中で大気圧であることを示しており、補給
水は補給水タンク３の静水頭および復水器１の真空によ
り、補給水タンク３から復水器１に流れる。また、復水
器２は停止中であるが水漲りのため、補給水ライン６の
自動弁７は開していることを示している。FIG. 8 shows that the condenser 1 is operating and is in a vacuum state, the condenser 2 is stopped and is at atmospheric pressure, and make-up water is supplied from the hydrostatic head of the make-up water tank 3 and the condenser 1 Flows from the makeup water tank 3 to the condenser 1 due to the vacuum. In addition, the condenser 2 is stopped, but the automatic valve 7 of the make-up water line 6 is open due to water filling.
【００１２】なお、復水器は、蒸気タービン(図示しな
い)から排出される蒸気を凝縮するための機器であり、
凝縮水はボイラ(図示しない)に送られ再び蒸気になり、
蒸気タービンを駆動する。復水器への補給水はこのサイ
クルへの初期水漲り、および当該軸の蒸気の他軸への供
給によって喪失した蒸気（水）の補給のために使用され
る。ここで、復水器への初期水漲りは補給水ポンプ１１
で補給水を強制移送するが、喪失した水の補給は少量で
あるため、補給水タンクと復水器との水頭差だけで供給
することができ、補給水ポンプ１１は運転経費節約のた
め通常時は停止させている事ができる。The condenser is a device for condensing steam discharged from a steam turbine (not shown).
The condensed water is sent to a boiler (not shown) and turns into steam again.
Drive the steam turbine. The make-up water to the condenser is used for initial filling of the cycle and for replenishing steam (water) lost due to the supply of steam to the other shaft of the shaft. Here, the initial filling of the condenser is performed with the makeup water pump 11.
The make-up water is forcibly transferred, but the supply of lost water is small, so that it can be supplied only by the head difference between the make-up water tank and the condenser. Time can be stopped.
【００１３】今、復水器運転台数が増加、あるいは復水
器１が接続する軸の蒸気系統が他軸へ蒸気を供給する場
合、補給水母管４の補給水流量が増加する。この補給水
母管４の補給水流量増加により補給水母管４での圧力損
失が増大し、復水器１が補給水を真空で引いていること
と相まって、２１部での圧力が負側の圧力となる。Now, when the number of operating condensers increases, or when the steam system of the shaft connected to the condenser 1 supplies steam to another shaft, the flow rate of make-up water in the make-up water main pipe 4 increases. Due to the increase in the makeup water flow rate of the makeup water main pipe 4, the pressure loss in the makeup water main pipe 4 increases, and the condenser 1 draws the makeup water by vacuum. Becomes
【００１４】この２１部の圧力が２２部の水頭圧以下の
圧力になったとき、つまり２２部および２３部の圧力が
負側の圧力となったとき、復水器２内の空気が補給水ラ
イン６に流出し、補給水母管４を経由して、運転中で真
空の復水器１に引かれ、流入する。このため、復水器１
が接続する軸の蒸気タービンは、真空度低下でトリップ
し運転停止となってしまう。When the pressure of the 21 part becomes equal to or lower than the head pressure of the 22 part, that is, when the pressure of the 22 and 23 parts becomes a negative pressure, the air in the condenser 2 is supplied with make-up water. It flows out into the line 6 and is drawn into the vacuum condenser 1 during operation via the makeup water main pipe 4 and flows in. Therefore, condenser 1
The steam turbine of the shaft to which is connected is tripped due to a decrease in the degree of vacuum and stopped.
【００１５】ここで、補給水母管４（於、２１部）での
補給水流量と２１部での圧力との関係を図９を用いて説
明する。この図より母管（補給水）流量の増加に伴い補
給水タンク３から２１部に至る補給水母管の圧力損失が
増大し、２１部の圧力が低下することが分かる。例え
ば、２４部の水頭が３ｍであった場合、２１部での母管
流量が４０ｍ3／ｈ を超えると２１部での圧力が２４部
の水頭圧以下となり、停止中の復水器２から空気が流出
する。Here, the relationship between the flow rate of the makeup water in the makeup water main pipe 4 (21 parts) and the pressure in the 21 parts will be described with reference to FIG. From this figure, it can be seen that as the flow rate of the main pipe (supply water) increases, the pressure loss of the make-up water main pipe from the make-up water tank 3 to 21 parts increases, and the pressure of 21 parts decreases. For example, when the head of 24 parts is 3 m, if the mother pipe flow rate at 21 parts exceeds 40 m 3 / h, the pressure at 21 parts becomes less than the head pressure of 24 parts, and Air flows out.
【００１６】なお、２１部の圧力が２ｍから２１部での
母管流量の増加に伴い負側に転じるのは、補給水タンク
３と２１部との水頭差が２ｍであり（母管流量が０ｍ3
／ｈのとき)、流量増加に伴い補給水母管の圧力損失が
増大し、かつ運転を開始している復水器１の真空に引か
れるためである。The reason why the pressure at 21 parts turns to the negative side with the increase in the flow rate of the main pipe at 2 parts from 2 m is that the head difference between the make-up water tank 3 and 21 parts is 2 m (the flow rate of the main pipe is 0m 3
/ H), the pressure loss of the make-up water main pipe increases with the increase in the flow rate, and the vacuum of the condenser 1 that has started operation is drawn.
【００１７】そこで、まず図１の実施例は、空気の流出
する可能性のある復水器２の復水器補給水ライン６に逆
止弁９を設置し、停止中の復水器２からの空気流出を直
接防止するものである。また、逆止弁の下流側（復水器
２側）に２５部の配管容量を持たせ、復水器２に供給し
た残りの補給水を逆止弁でせき止め封水することによ
り、逆止弁の締切り性能を向上させる。さらに、逆止弁
は下流側が封水しやすい場所に設置するとともに、封水
容量（２５部の容量）は逆止弁のリーク量を考慮したも
のとする。本実施例によれば、逆止弁の設置により、停
止中の復水器から運転中の復水器への空気流出を直接防
止できる効果がある。Therefore, first, in the embodiment of FIG. 1, a check valve 9 is installed in the condenser make-up water line 6 of the condenser 2 from which air may flow out, and the condenser 2 is stopped. Directly prevents the air from flowing out. In addition, the check valve is provided with a pipe capacity of 25 parts on the downstream side (condenser 2 side) of the check valve, and the remaining make-up water supplied to the condenser 2 is blocked by the check valve and sealed. Improve valve shut-off performance. Furthermore, the check valve is installed in a place where the water is easily sealed on the downstream side, and the water sealing capacity (capacity of 25 parts) is determined in consideration of the leak amount of the check valve. According to this embodiment, the installation of the check valve has the effect of directly preventing the outflow of air from the stopped condenser to the operating condenser.
【００１８】図２に本発明の他の実施例を示す。系統構
成は図１の実施例と同様であるが本実施例の特徴は、図
１で封水する２５部に強制的に水を必要量供給できるよ
うに封水供給ライン１０を設置したものであり、逆止弁
下流の封水を確実にするものである。なお、封水の供給
は、連続または２５部の封水容量低下を検知することに
より行う。FIG. 2 shows another embodiment of the present invention. The system configuration is the same as that of the embodiment of FIG. 1, but the feature of this embodiment is that a sealed water supply line 10 is installed so that a required amount of water can be forcibly supplied to 25 parts of the sealed water in FIG. Yes, to ensure water sealing downstream of the check valve. In addition, the supply of the sealing water is performed by detecting a continuous or 25-part reduction in the sealing capacity.
【００１９】図３に本発明の他の実施例を示す。系統構
成は図１の実施例と同様であるが、本実施例の特徴は、
補給水母管４に圧力計１２を設置し、停止中の復水器２
から運転中の復水器１に空気が流出する圧力条件、つま
り図９で示す条件によれば２１部での母管流量が４０ｍ
3／ｈ を超えた場合に対応する圧力以下となったとき
に、圧力計１２により補給水母管４の圧力低下を検出
し、その検出信号を停止中の復水器２の補給水ラインの
自動弁７に送り、この自動弁７が全閉となり空気流出を
防止することである。FIG. 3 shows another embodiment of the present invention. Although the system configuration is the same as that of the embodiment of FIG. 1, the features of this embodiment are as follows.
A pressure gauge 12 is installed in the make-up water main pipe 4, and the condenser 2 is stopped.
According to the pressure condition at which air flows out of the condenser 1 during operation, that is, according to the condition shown in FIG.
When the pressure falls below 3 / h, the pressure gauge 12 detects a drop in the pressure of the make-up water main pipe 4, and the detection signal is sent to the automatic supply water line of the condenser 2 which is stopped. The automatic valve 7 is fully closed to prevent air outflow.
【００２０】図４に本発明のさらに他の実施例を示す。
系統構成は図１の実施例と同様であるが、本実施例の特
徴は、図３で示す圧力計１２の替わりに流量計１３を設
置し、停止中の復水器２から運転中の復水器１に空気が
流出する流量条件、つまり図９で示す条件によれば２１
部での母管流量が４０ｍ3／ｈ を超えたときに、流量計
１３により補給水母管４の流量増加を検出し、その検出
信号を停止中の復水器２の補給水ラインの自動弁７に送
り、この自動弁７が全閉となり空気流出を防止すること
である。FIG. 4 shows still another embodiment of the present invention.
The system configuration is the same as that of the embodiment of FIG. 1, but the feature of this embodiment is that a flow meter 13 is installed in place of the pressure gauge 12 shown in FIG. According to the flow rate condition at which air flows out to the water dispenser 1, that is, according to the condition shown in FIG.
When the flow rate of the main pipe in the section exceeds 40 m 3 / h, an increase in the flow rate of the make-up water main pipe 4 is detected by the flow meter 13, and the detection signal is sent to the automatic valve of the make-up water line of the condenser 2 which is stopped. 7, the automatic valve 7 is fully closed to prevent air outflow.
【００２１】図５にさらに本発明の他の実施例を示す。
系統構成は図１の実施例と同様であるが本実施例の特徴
は、補給水母管の流量増加により２１部の圧力が空気流
出の起こる条件、つまり図９で示す条件によれば２１部
での母管流量が４０ｍ3／ｈを超えた場合に対応する圧
力まで低下した場合に２１部の圧力を確保するため、圧
力計１２または流量計１３により補給水母管４の圧力低
下または流量増加を検出し、その検出信号を補給水ポン
プ１０に送り、その補給水ポンプ１０を起動するインタ
ーロックを設置し、このポンプの吐出圧力により補給水
母管４の圧力を高め２１部の圧力を確保し、空気流出を
防止することである。FIG. 5 shows another embodiment of the present invention.
The system configuration is the same as that of the embodiment shown in FIG. 1, but the feature of this embodiment is that the pressure of 21 parts increases due to the increase in the flow rate of the make-up water main pipe, and the outflow of air occurs, that is, 21 parts according to the condition shown in FIG. In order to secure a pressure of 21 parts when the flow rate of the main pipe of the above-mentioned main pipe drops to a pressure corresponding to a case where it exceeds 40 m 3 / h, the pressure of the make-up water main pipe 4 is reduced or increased by the pressure gauge 12 or the flow meter 13. Detecting, sending the detection signal to the makeup water pump 10, installing an interlock for starting the makeup water pump 10, increasing the pressure of the makeup water mother pipe 4 by the discharge pressure of this pump, and securing the pressure of 21 parts, It is to prevent air spill.
【００２２】図６にさらに本発明の他の実施例を示す。
系統構成は図１の実施例と同様であるが本実施例の特徴
は、２１部の圧力が考えられる圧力範囲で変動しても、
つまり補給水母管４で流量が運転中に考えられる最小流
量から最大流量の間で変動しても、空気が流出しないよ
う配管構成を考慮して水頭（２４部）を設置し、空気の
流出をこの水頭で防止することである。FIG. 6 shows still another embodiment of the present invention.
Although the system configuration is the same as that of the embodiment of FIG. 1, the feature of the present embodiment is that even if the pressure of 21 parts fluctuates in a possible pressure range.
In other words, even if the flow rate of the makeup water main pipe 4 fluctuates between the minimum flow rate and the maximum flow rate that can be considered during operation, a water head (24 parts) is installed in consideration of the piping configuration so that air does not flow out, and air outflow is prevented. The head is to prevent this.
【００２３】[0023]
【発明の効果】以上説明してきたように本発明によれ
ば、構成簡単にして停止中の復水器から運転中の復水器
への空気流出を防止し、運転中の復水器の真空トリップ
を防ぐことが可能となりプラント稼働率の低下を充分防
止することができる。As described above, according to the present invention, the structure is simplified to prevent air from flowing out of the condenser being stopped to the condenser being operated, and the vacuum of the condenser being operated is reduced. Trips can be prevented, and lowering of the plant operation rate can be sufficiently prevented.
【図１】本発明発電プラントの補給水供給システムの一
実施例を示す系統図である。FIG. 1 is a system diagram showing one embodiment of a makeup water supply system for a power plant according to the present invention.
【図２】本発明発電プラントの補給水供給システムの他
の実施例を示す系統図である。FIG. 2 is a system diagram showing another embodiment of the make-up water supply system of the power plant according to the present invention.
【図３】本発明発電プラントの補給水供給システムのさ
らに他の実施例を示す系統図である。FIG. 3 is a system diagram showing still another embodiment of the makeup water supply system of the power plant according to the present invention.
【図４】本発明発電プラントの補給水供給システムのさ
らに他の実施例を示す系統図である。FIG. 4 is a system diagram showing still another embodiment of the makeup water supply system of the power plant according to the present invention.
【図５】本発明発電プラントの補給水供給システムのさ
らに他の実施例を示す系統図である。FIG. 5 is a system diagram showing still another embodiment of the makeup water supply system of the power plant according to the present invention.
【図６】本発明発電プラントの補給水供給システムのさ
らに他の実施例を示す系統図である。FIG. 6 is a system diagram showing still another embodiment of the make-up water supply system of the power plant according to the present invention.
【図７】従来の発電プラントの補給水供給システムを示
す系統図である。FIG. 7 is a system diagram showing a make-up water supply system of a conventional power plant.
【図８】停止中の復水器から運転中の復水器に空気が流
出する原理を説明するための系統図である。FIG. 8 is a system diagram for explaining the principle of air flowing out of the condenser being stopped to the condenser being operated.
【図９】母管流量と圧力の関係を示す特性図である。FIG. 9 is a characteristic diagram showing a relationship between a mother pipe flow rate and a pressure.
１…運転中の復水器、２…停止中の復水器、３…補給水
タンク、４…補給水母管、５，６…補給水ライン、７…
自動弁、９…逆止弁、１０…封水供給ライン、１１…補
給水ポンプ、１２…圧力計、１３…流量計、２１，２
２，２３…空気流出条件のポイントとなる点、２４…水
頭、２５…逆止弁封水部。DESCRIPTION OF SYMBOLS 1 ... Condenser in operation, 2 ... Condenser while stopped, 3 ... Makeup water tank, 4 ... Makeup water main pipe, 5, 6 ... Makeup water line, 7 ...
Automatic valve, 9: check valve, 10: sealed water supply line, 11: makeup water pump, 12: pressure gauge, 13: flow meter, 21, 22
2, 23: points that are points of air outflow conditions, 24: head, 25: check valve sealing section.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 服部 洋市 茨城県日立市幸町三丁目２番１号 日立 エンジニアリング株式会社内 (56)参考文献 実開 昭60−95459（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F28B 1/00 - 11/00 F01K 9/00 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroshi Hattori 3-2-1, Sachimachi, Hitachi City, Ibaraki Prefecture Inside Hitachi Engineering Co., Ltd. ) Field surveyed (Int. Cl. 7 , DB name) F28B 1/00-11/00 F01K 9/00
Claims (7)
水を補給する補給水系統が、補給水母管から分岐して供
給されるように形成されている発電プラントの補給水供
給システムにおいて、 前記補給水母管と復水器との間に、停止中の復水器から
運転中の復水器へ空気が流出することを防止する空気流
出防止手段を設けたことを特徴とする発電プラントの補
給水供給システム。A makeup water system for a power plant, comprising a plurality of condensers, wherein a makeup water system for supplying water to each of the condensers is formed so as to be branched and supplied from a makeup water main pipe. In the supply system, between the make-up water main pipe and the condenser, air outflow prevention means for preventing air from flowing out of the condenser in operation to the condenser in operation is provided. Make-up water supply system for a power plant.
水を補給する補給水系統が、補給水母管から分岐して供
給されるように形成されている発電プラントの補給水供
給システムにおいて、 前記補給水母管と復水器との間に、停止中の復水器から
運転中の復水器へ空気が流出することを防止する逆止弁
を設けたことを特徴とする発電プラントの補給水供給シ
ステム。2. A make-up water system for a power plant, comprising a plurality of condensers, wherein a make-up water system for supplying water to each of the condensers is formed so as to be branched and supplied from a make-up water main pipe. In the supply system, a check valve is provided between the makeup water main pipe and the condenser to prevent air from flowing out of the condenser being stopped to the condenser being operated. Makeup water supply system for power plants.
リークを防止する封水部および封水を一定量以上維持す
る封水供給ラインを設けてなる請求項２記載の発電プラ
ントの補給水供給システム。3. A water-sealing portion for preventing valve leakage of the check valve and a water-sealing supply line for maintaining a predetermined amount or more of water on the condenser side of the check valve. Make-up water supply system for a power plant.
水を補給する補給水系統が、補給水母管から分岐して供
給されるように形成されている発電プラントの補給水供
給システムにおいて、 前記補給水母管に圧力計または流量計を設置するととも
に、前記補給水母管と復水器との間の補給水供給系に自
動弁を設け、前記圧力計または流量計の検出値が所定値
以下となる直前に前記自動弁を全閉するように形成した
ことを特徴とする発電プラントの補給水供給システム。4. A make-up water for a power plant, comprising a plurality of condensers, wherein a make-up water system for supplying water to each of the condensers is formed so as to be branched and supplied from a make-up water main pipe. In the supply system, a pressure gauge or a flow meter is installed in the makeup water main pipe, and an automatic valve is provided in a makeup water supply system between the makeup water main pipe and the condenser, and a detection value of the pressure gauge or the flow meter is provided. Wherein the automatic valve is fully closed immediately before the pressure becomes equal to or less than a predetermined value.
水を補給する補給水系統が、補給水母管から分岐して供
給されるように形成されている発電プラントの補給水供
給システムにおいて、 前記補給水母管に圧力計または流量計を設置するととも
に、前記圧力計または流量計の検出値が所定値以下とな
る直前に前記補給水母管の圧力を確保するように補給水
ポンプを起動するように形成したことを特徴とする発電
プラントの補給水供給システム。5. A make-up water system for a power plant, comprising a plurality of condensers, wherein a make-up water system for supplying water to each of the condensers is formed so as to be branched and supplied from a make-up water main pipe. In the supply system, a pressure gauge or a flow meter is installed in the makeup water main pipe, and a makeup water pump is configured to secure the pressure of the makeup water main pipe immediately before a detected value of the pressure gauge or the flow meter becomes equal to or less than a predetermined value. A makeup water supply system for a power plant, wherein the makeup water supply system is configured to be activated.
夫々の復水器へ水を補給する補給水系統が、補給水母管
から複数の復水器へ分岐・供給するように形成されてい
る発電プラントの補給水供給システムにおいて、 前記補給水母管と復水器との間の補給水供給系に、補給
水母管を介して停止中の復水器から運転中の復水器への
空気の流出を妨げる水頭を有する配管ルートを設けたこ
とを特徴とする発電プラントの補給水供給システム。6. A power plant having a plurality of condensers,
In a makeup water supply system of a power generation plant, a makeup water system for supplying water to each condenser is formed so as to branch and supply the makeup water from the makeup water main pipe to a plurality of condensers. The makeup water supply system between the water condenser and the makeup water supply system is provided with a piping route having a water head that prevents the outflow of air from the stopped condenser to the operating condenser through the makeup water main pipe. Make-up water supply system for a power plant.
夫々の復水器へ水を補給する補給水系統が、補給水母管
から複数の復水器へ分岐・供給するように形成されてい
る発電プラントの補給水供給システムにおいて、 前記補給水母管と復水器との間の補給水供給系を、補給
水母管を介して停止中の復水器から運転中の復水器への
空気の流出を妨げる水頭を有する補給水配管ルート構成
に形成したことを特徴とする発電プラントの補給水供給
システム。7. A power plant having a plurality of condensers,
In a makeup water supply system of a power generation plant, a makeup water system for supplying water to each condenser is formed so as to branch and supply the makeup water from the makeup water main pipe to a plurality of condensers. The makeup water supply system between the water condenser and the makeup water supply line is formed in a makeup water piping route configuration having a head for preventing the outflow of air from the stopped condenser to the operating condenser through the makeup water main pipe. A makeup water supply system for a power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27351894A JP3217927B2 (en) | 1994-11-08 | 1994-11-08 | Makeup water supply system for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27351894A JP3217927B2 (en) | 1994-11-08 | 1994-11-08 | Makeup water supply system for power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08136165A JPH08136165A (en) | 1996-05-31 |
| JP3217927B2 true JP3217927B2 (en) | 2001-10-15 |
Family
ID=17528980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27351894A Expired - Fee Related JP3217927B2 (en) | 1994-11-08 | 1994-11-08 | Makeup water supply system for power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3217927B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504081A (en) * | 2020-04-08 | 2020-08-07 | 中国电建集团河北省电力勘测设计研究院有限公司 | Many backpressure condenser vacuum pumping system of turbo generator set |
-
1994
- 1994-11-08 JP JP27351894A patent/JP3217927B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08136165A (en) | 1996-05-31 |
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