JPH07332018A - Reheat steam pipe device in nuclear power plant - Google Patents
Reheat steam pipe device in nuclear power plantInfo
- Publication number
- JPH07332018A JPH07332018A JP6125934A JP12593494A JPH07332018A JP H07332018 A JPH07332018 A JP H07332018A JP 6125934 A JP6125934 A JP 6125934A JP 12593494 A JP12593494 A JP 12593494A JP H07332018 A JPH07332018 A JP H07332018A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- moisture separation
- intermediate valve
- combination intermediate
- low
- 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.)
- Granted
Links
Landscapes
- Control Of Turbines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は原子力発電プラントの高
圧タ―ビン、湿分分離加熱器、低圧タ―ビン等における
抽気系統に係り、特に、組合わせ中間弁の試験中、湿分
分離加熱器で扱う蒸気量の増加を防止するようにした原
子力発電プラントの再熱蒸気管装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extraction system for a high pressure turbine, a moisture separation heater, a low pressure turbine, etc. of a nuclear power plant, and particularly to a moisture separation heating during a test of a combination intermediate valve. The present invention relates to a reheat steam pipe device for a nuclear power plant, which prevents an increase in the amount of steam handled by the reactor.
【０００２】[0002]
【従来の技術】図３に原子力発電プラントの抽気装置を
示す。原子炉（図示せず）で発生した蒸気は主蒸気管２
を通り、高圧タ―ビン１に入り、膨張を遂げて仕事を行
う。高圧タ―ビン１の排気蒸気はクロスアラウンド管３
ａ，３ｂを通り、湿分分離加熱器４ａ，４ｂに入る。こ
の湿分分離加熱器４ａ，４ｂ内では湿分が除去され、さ
らに別に供給される加熱蒸気によって過熱蒸気になるま
で加熱される。湿分分離加熱器４ａ，４ｂを出た蒸気は
蒸気管５ａ，５ｂを通って低圧タ―ビン６ａ，６ｂに入
り、さらに膨張して仕事を行う。低圧タ―ビン６ａ，６
ｂの排気は復水器（図示せず）へ入り、凝縮し、復水系
および給水系をへて再び原子炉へ給水される。2. Description of the Related Art FIG. 3 shows an extraction apparatus for a nuclear power plant. The steam generated in the reactor (not shown) is the main steam pipe 2
Go through the high pressure turbine 1 and expand to perform work. Exhaust steam from the high-pressure turbine 1 is a cross-around pipe 3
After passing through a and 3b, the moisture separation heaters 4a and 4b enter. Moisture is removed in the moisture separation heaters 4a and 4b, and the heated steam is further heated by separately supplied heating steam until it becomes superheated steam. The steam discharged from the moisture separation heaters 4a and 4b enters the low pressure turbines 6a and 6b through the steam pipes 5a and 5b, and further expands to perform work. Low pressure turbine 6a, 6
The exhaust gas of b enters a condenser (not shown), is condensed, and is fed to the reactor again through the condensate system and the water supply system.
【０００３】蒸気管５ａ，５ｂの経路には第１組合わせ
中間弁７ａ，７ｂ、第２組合わせ中間弁８ａ，８ｂが設
けられ、負荷急変時に蒸気の流入を防ぐと共に、過速状
態に陥るのを防止している。A first combination intermediate valve 7a, 7b and a second combination intermediate valve 8a, 8b are provided in the paths of the steam pipes 5a, 5b to prevent the inflow of steam when the load suddenly changes and fall into an overspeed state. Are prevented.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述の
原子力発電プラントにおいては第１，第２組合わせ中間
弁７ａ，７ｂ，８ａ，８ｂの試験時試験対象の弁と直接
連絡していない湿分分離加熱器４ａ，４ｂでは取扱う蒸
気量が増大するという問題がある。However, in the above-mentioned nuclear power plant, the moisture separation which is not in direct contact with the valve to be tested during the test of the first and second combination intermediate valves 7a, 7b, 8a, 8b. The heaters 4a and 4b have a problem that the amount of steam handled increases.
【０００５】第１組合わせ中間弁７ａの試験を具体例と
してこの現象を説明する。すなわち、試験される第１組
合わせ中間弁７ａを通過する蒸気量は、試験のために弁
体が閉じた時点から零となり、低圧タ―ビン６ａへ流入
する蒸気流量が一時的に約半分になる。低圧タ―ビン６
ａ，６ｂ内部の流動抵抗は、高圧タ―ビン１を出てから
クロスアラウンド管３ａ，３ｂ、湿分分離器４ａ，４
ｂ、蒸気管５ａ，５ｂ、第１，第２組合わせ中間弁７
ａ，７ｂ，８ａ，８ｂを通り、低圧タ―ビン６ａ，６ｂ
に入るまでの機器、配管の流動抵抗と比較してかなり大
きい。そのため、第１組合わせ中間弁７ａが試験により
閉まると、蒸気流量が零となり、低圧タ―ビン６ａに流
れ込む蒸気は第２組合わせ中間弁８ａにある蒸気管５ｂ
からだけとなる。つまり、低圧タ―ビン６ａに流れ込む
蒸気は一時的に約半分となり、低圧タ―ビン６ａの流動
抵抗が急激に減少する。This phenomenon will be described by taking a test of the first combination intermediate valve 7a as a specific example. That is, the amount of steam passing through the first combination intermediate valve 7a to be tested becomes zero when the valve body is closed for the test, and the flow rate of steam flowing into the low-pressure turbine 6a is temporarily halved. Become. Low pressure turbine 6
The flow resistance inside a and 6b is as follows.
b, steam pipes 5a, 5b, first and second combination intermediate valve 7
a, 7b, 8a, 8b, low pressure turbine 6a, 6b
It is considerably larger than the flow resistance of the equipment and piping before entering. Therefore, when the first combination intermediate valve 7a is closed by the test, the steam flow rate becomes zero, and the steam flowing into the low-pressure turbine 6a receives the steam pipe 5b in the second combination intermediate valve 8a.
Only from That is, the steam flowing into the low-pressure turbine 6a is temporarily halved, and the flow resistance of the low-pressure turbine 6a sharply decreases.
【０００６】高圧タ―ビン１の排気圧と、低圧タ―ビン
６ａ，６ｂの排気圧力は一定であるため、低圧タ―ビン
６ａ内の流動抵抗の減少に伴い高圧タ―ビン１からクロ
スアラウンド管３ｂ、湿分分離加熱器４ｂ、第２組合わ
せ中間弁８ａを通過し、低圧タ―ビン６ａに流れる系統
の蒸気流量が増加する。これに対し、高圧タ―ビン１か
らクロスアラウンド管３ａを通り、湿分分離加熱器４ａ
に流れ込む蒸気流量は減少する。第１，第２組合わせ中
間弁７ｂ，８ｂを通過する蒸気量は、試験前と整定後で
は変化は小さいが、第２組合わせ中間弁８ａを通過する
蒸気量は約２倍になる。こうして湿分分離加熱器４ａで
扱う蒸気量が第１組合わせ中間弁７ａの試験により減少
した分、湿分分離加熱器４ｂで取扱う蒸気量が増加す
る。Since the exhaust pressure of the high-pressure turbine 1 and the exhaust pressure of the low-pressure turbines 6a and 6b are constant, the high-pressure turbine 1 cross-arounds as the flow resistance in the low-pressure turbine 6a decreases. The steam flow rate of the system that passes through the pipe 3b, the moisture separation heater 4b, and the second combination intermediate valve 8a and flows to the low-pressure turbine 6a increases. On the other hand, the high-pressure turbine 1 passes through the cross-around pipe 3a and the moisture separation heater 4a.
The flow rate of steam flowing into is reduced. The amount of steam passing through the first and second combination intermediate valves 7b and 8b has little change before and after the settling, but the amount of steam passing through the second combination intermediate valve 8a is approximately doubled. In this way, the amount of steam handled by the moisture separator / heater 4a is reduced by the test of the first combination intermediate valve 7a, so that the amount of steam handled by the moisture separator / heater 4b is increased.
【０００７】図４に蒸気流量の各時間における変化を示
している。符号ｅ，ｆ，ｇ，ｈは第１，第２組合わせ中
間弁７ａ，７ｂ，８ａ，８ｂを通る蒸気量、ｉA ，ｉB
は低圧タ―ビン６ａ，６ｂに流入する蒸気量、ｊA ，ｊ
B は湿分分離加熱器４ａ，４ｂで扱う蒸気量の各時間で
の変化を示す。Ｑ1 は第１組合わせ中間弁７ａの試験開
始前に第１，第２組合わせ中間弁７ａ，７ｂ，８ａ，８
ｂに流れる蒸気流量、Ｑ2 は第１組合わせ中間弁７ａの
全閉後、流量が整定した後に低圧タ―ビン６ａに流入す
る蒸気量（＝整定後のｇ）、Ｑ3 は整定後湿分分離加熱
器４ｂで取扱う蒸気量（整定後のｇ＋ｈ）を示し、ｔ1
は試験開始時間、ｔ2 は全閉完了時間、ｔ3 は蒸気流量
が整定した時間を示す。第１組合わせ中間弁７ａを通る
蒸気流量ｅは、試験開始と同時に減少し始め、弁体が閉
じて零となる。それに伴い低圧タ―ビン６ａに流入する
蒸気流量ｉA （＝ｅ＋ｇ）は、当初の蒸気流量２×Ｑ1
（ｅ＝Ｑ1 ，ｇ＝Ｑ1 ）から急激に減少し、全閉完了後
第２組合わせ中間弁８ａを通過する蒸気流量ｇ（＝ｉ
A ）が増加してゆき、当初低圧タ―ビン６ａに流入して
いた蒸気流量（＝２Ｑ1 ）付近の流量Ｑ2 で整定する。
第１組合わせ中間弁７ｂの蒸気流量ｆは第１組合わせ中
間弁７ａが全閉しても、低圧タ―ビン６ｂ内部の流動抵
抗が大きいので、試験前の流量Ｑ1 よりも少し増加した
流量で整定する。こうして、高圧タ―ビン１から湿分分
離加熱器４ａへ流入する蒸気量もｊA （＝ｅ＋ｆ）も、
試験前の２Ｑ1 からＱ1 付近まで減少する。第１組合わ
せ中間弁８ｂの蒸気流量ｈは第２組合わせ中間弁８ａの
蒸気流量が増加したため、湿分分離加熱器４ｂに流入す
る蒸気量もｊB （＝ｇ＋ｈ）が増加し、流動抵抗が増加
したことにより減少し、試験前の流量Ｑ1 より少々減少
した流量で整定する。こうして、低圧タ―ビン４ｂの流
入蒸気量ｉB （＝ｇ＋ｈ）は全閉前後で大きな変化はな
く、湿分分離加熱器４ａの処理する蒸気量ｊA （＝ｅ＋
ｆ）組合わせ中間弁７ａが試験により全閉することによ
り当初の蒸気量２Ｑ1 よりＱ1 近くまで減少して整定し
たのに対し、湿分分離加熱器４ｂの処理する蒸気量ｊB
（＝ｇ＋ｈ）はＱ3 まで増加する。FIG. 4 shows changes in the vapor flow rate over time. Code e, f, g, h is the amount of steam passing through the first, second combinational intermediate valve 7a, 7b, 8a, 8b, i A, i B
Is the amount of steam flowing into the low-pressure turbines 6a, 6b, j A , j
B indicates the change in the amount of steam handled by the moisture separation heaters 4a and 4b at each time. Q 1 is the first and second combination intermediate valves 7a, 7b, 8a, 8 before the test of the first combination intermediate valve 7a is started.
The flow rate of steam flowing in b, Q 2 is the quantity of steam flowing into the low-pressure turbine 6a after the first combination intermediate valve 7a is fully closed and the flow rate is settled (= g after settling), and Q 3 is the humidity after settling. Indicates the amount of steam (g + h after settling) handled by the minute separation heater 4b, t 1
Indicates a test start time, t 2 indicates a fully closed completion time, and t 3 indicates a time when the steam flow rate is settled. The steam flow rate e passing through the first combination intermediate valve 7a starts decreasing at the same time as the start of the test, and the valve body closes to zero. Accordingly, the steam flow rate i A (= e + g) flowing into the low-pressure turbine 6a is the initial steam flow rate 2 × Q 1
(E = Q 1 , g = Q 1 ) The flow rate of steam g (= i) that sharply decreases and passes through the second combination intermediate valve 8a after the completion of full closure.
A ) increases and settles at the flow rate Q 2 near the steam flow rate (= 2Q 1 ) that was initially flowing into the low-pressure turbine 6a.
The steam flow f of the first combinatorial intermediate valve 7b be first combinational intermediate valve 7a is fully closed, the low pressure data - since a large flow resistance in the bottle 6b, and slightly increased than the flow rate to Q 1 before the test Settle at the flow rate. Thus, both the amount of steam flowing from the high-pressure turbine 1 into the moisture separation heater 4a and j A (= e + f)
Decrease from 2Q 1 before the test to the vicinity of the Q 1. As for the steam flow rate h of the first combination intermediate valve 8b, since the steam flow rate of the second combination intermediate valve 8a is increased, the amount of steam flowing into the moisture separation heater 4b is also increased by j B (= g + h) and the flow resistance is increased. Is decreased due to the increase, and the flow rate is settled at a flow rate slightly decreased from the flow rate Q 1 before the test. Thus, the inflowing steam amount i B (= g + h) of the low-pressure turbine 4b does not change largely before and after fully closing, and the steam amount j A (= e +) to be processed by the moisture separation heater 4a.
While f) Combination intermediate valve 7a is settled decreased to Q 1 closer than originally steam quantity 2Q 1 by fully closing the test, the amount of steam to process the moisture separator heater 4b j B
(= G + h) increases up to Q 3 .
【０００８】このように第１，第２組合わせ中間弁のい
ずれか１つを試験中、試験を対象となるものと直接連絡
していない湿分分離加熱器で取扱う蒸気量が増大するこ
とになる。この現象は低圧タ―ビンの数が少ないほど顕
著である。このため湿分分離加熱器４ａ，４ｂは、この
蒸気処理量を見込んで通常運転中の容量より大容量で設
計する必要があり、機器が大形化する原因となってい
る。As described above, during the test of any one of the first and second combination intermediate valves, the amount of steam handled by the moisture separation heater which is not in direct communication with the object of the test increases. Become. This phenomenon is more remarkable as the number of low pressure turbines is smaller. For this reason, the moisture separation heaters 4a and 4b need to be designed with a larger capacity than the capacity during normal operation in consideration of this steam treatment amount, which is a cause of enlargement of the equipment.
【０００９】本発明の目的は組合わせ中間弁の試験中、
試験対象にならない湿分分離加熱器で取扱う蒸気量が増
加するのを防止するようにした原子力発電プラントの再
熱蒸気管装置を提供することにある。The object of the present invention is to test the combination intermediate valve during
It is an object of the present invention to provide a reheat steam pipe device for a nuclear power plant, which prevents an increase in the amount of steam handled by a moisture separation heater that is not a test target.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に本発明は複数の湿分分離加熱器の出口から複数の低圧
タ―ビンの入口にかけての再熱蒸気系統を蒸気が各該湿
分分離加熱器からそれぞれの前記低圧タ―ビンに独立し
た第１，第２系統によって等量づつ供給されるように構
成し、この独立した第１および第２系統に第１および第
２組合わせ中間弁をそれぞれ設けてなる原子力発電プラ
ントにおいて、前記組合わせ中間弁の試験中前記湿分分
離加熱器から前記低圧タ―ビンにかけて等量の蒸気が流
れるように前記第１および第２系統と並列に該湿分分離
加熱器から該低圧タ―ビンに結ばれる第３および第４系
統を第３および第４組合わせ中間弁を介してそれぞれ設
けたことを特徴とするものである。In order to achieve the above object, the present invention provides a reheat steam system from the outlets of a plurality of moisture separation heaters to the inlets of a plurality of low-pressure turbines, in which steam is used for each moisture content. The separate heaters are configured to supply equal amounts to the respective low-pressure turbines by the independent first and second systems, and the first and second combined intermediates are provided to the independent first and second systems. In a nuclear power plant equipped with valves, in parallel with the first and second systems so that an equal amount of steam flows from the moisture separation heater to the low pressure turbine during a test of the combined intermediate valve. A third and a fourth system connected from the moisture separator / heater to the low-pressure turbine are provided via third and fourth combination intermediate valves, respectively.
【００１１】さらに、別の発明は第１および第２系統に
第１組合わせ中間弁の下流側および第２組合わせ中間弁
の下流側でそれぞれ連絡する第１連絡管および第２連絡
管を設けたことを特徴とするものである。Still another aspect of the present invention is to provide a first communication pipe and a second communication pipe in the first and second systems, which communicate with each other on the downstream side of the first combination intermediate valve and on the downstream side of the second combination intermediate valve, respectively. It is characterized by that.
【００１２】[0012]
【作用】本発明による原子力発電プラントの抽気装置で
は組合わせ中間弁の試験中追加した系統である蒸気管に
よって湿分分離加熱器から低圧タ―ビンへ流れる蒸気流
量が確保される。In the bleeder of the nuclear power plant according to the present invention, the flow rate of steam flowing from the moisture separation heater to the low pressure turbine is secured by the steam pipe which is a system added during the test of the combined intermediate valve.
【００１３】また、本発明においては組合わせ中間弁の
下流側で連絡する連絡管によって湿分分離加熱器から低
圧タ―ビンへ向かう蒸気流量が確保される。これにより
各湿分分離加熱器で扱う蒸気量が変動するのを防止する
ことができる。かくして、組合わせ中間弁の試験中も湿
分分離器で取扱う蒸気量が増加しないので、湿分分離加
熱器が大形化してしまうのを防ぐことができる。Further, in the present invention, the flow rate of steam flowing from the moisture separation heater to the low pressure turbine is secured by the connecting pipe connected downstream of the combination intermediate valve. As a result, it is possible to prevent the amount of steam handled by each moisture separation heater from fluctuating. Thus, the amount of steam handled by the moisture separator does not increase even during the test of the combined intermediate valve, so that the moisture separator / heater can be prevented from becoming large.
【００１４】[0014]
【実施例】以下、本発明の実施例の図１を参照して説明
する。なお、従来技術によって説明された構成には図３
と同一の符号を付して説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. It should be noted that the configuration described in the related art is shown in FIG.
The same reference numerals are given and explanations are omitted.
【００１５】図１において、湿分分離加熱器４ａと低圧
タ―ビン６ａ，６ｂとは２本の蒸気管（以下、第１蒸気
管と称する）５ａによって、また湿分分離加熱器４ｂと
低圧タ―ビン６ａ，６ｂとは２本の蒸気管（以下、第２
蒸気管と称する）５ｂによってそれぞれ結ばれて独立し
た系統が構成されている。In FIG. 1, the moisture separation heater 4a and the low-pressure turbines 6a and 6b are provided by two steam pipes (hereinafter referred to as the first steam pipes) 5a, and the moisture separation heater 4b and the low-pressure heater 4b. The turbines 6a and 6b are two steam pipes (hereinafter referred to as the second steam pipe).
Independent systems are formed by being connected to each other by steam pipes 5b).
【００１６】この系統に加えて本実施例は第１および第
２組合わせ中間弁７ａ，７ｂ，８ａ，８ｂに見合う第３
および第４組合わせ中間弁10ａ，10ｂ，11ａ，11ｂのた
めの第３蒸気管９ａおよび第４蒸気管９ｂを接続する。
第３蒸気管９ａには第３組合わせ中間弁10ａ，10ｂを設
け、第４蒸気管９ｂには第４組合わせ中間弁11ａ，11ｂ
を設ける。In addition to this system, the third embodiment is suitable for the first and second combination intermediate valves 7a, 7b, 8a, 8b.
And the third steam pipe 9a and the fourth steam pipe 9b for the fourth combination intermediate valve 10a, 10b, 11a, 11b are connected.
The 3rd combination intermediate valve 10a, 10b is provided in the 3rd steam pipe 9a, and the 4th combination intermediate valve 11a, 11b is provided in the 4th steam pipe 9b.
To provide.
【００１７】上記による各組合わせ中間弁７ａ，７ｂ，
８ａ，８ｂの試験は第３蒸気管９ａまたは第４補助蒸気
管９ｂに蒸気の流れを保って実施する。たとえば、第１
組合わせ中間弁７ａの試験においてその弁体が全閉され
たとき第３組合わせ中間弁10ａを全開に保って第３蒸気
管９ａから低圧タ―ビン６ａにかけての蒸気の流れを確
保する。このとき、流量は第１蒸気管５ａの流量を加え
て２倍となる。この流量の確保は他の第１および第２組
合わせ中間弁７ａ，７ｂ，８ａ，８ｂの試験においても
同様である。Each combination intermediate valve 7a, 7b,
The tests of 8a and 8b are carried out while keeping the flow of steam in the third steam pipe 9a or the fourth auxiliary steam pipe 9b. For example, the first
In the test of the combination intermediate valve 7a, when the valve body is fully closed, the third combination intermediate valve 10a is kept fully open to ensure the flow of steam from the third steam pipe 9a to the low pressure turbine 6a. At this time, the flow rate is doubled by adding the flow rate of the first steam pipe 5a. The securing of this flow rate is the same in the tests of the other first and second combination intermediate valves 7a, 7b, 8a, 8b.
【００１８】これにより試験開始前と同等な蒸気が確保
され、湿分分離加熱器４ａ，４ｂで扱う蒸気量は同等で
あり、機器が大形化するのを防止することができる。本
発明の他の実施例を図２を参照して説明する。As a result, the same amount of steam as before the start of the test is secured, the amount of steam handled by the moisture separation heaters 4a and 4b is the same, and it is possible to prevent the equipment from becoming large. Another embodiment of the present invention will be described with reference to FIG.
【００１９】それぞれ第１組合わせ中間弁７ａ，７ｂを
有する２本の蒸気管（以下、第１蒸気管と称する）５ａ
によって独立した系統が構成されている。また、第２組
合わせ中間弁８ａ，８ｂを有する２本の蒸気管（以下、
第２蒸気管と称する）５ｂによって独立した系統が構成
されている。本実施例は第１組合わせ中間弁７ａ，７ｂ
の下流側の第１蒸気管５ａを第１連絡管12ａによって、
また第２組合わせ中間弁８ａ，８ｂの下流側の第２蒸気
管５ｂを第２連絡管12ｂによってそれぞれ接続する。こ
の第１連絡管12ａには、第１連絡弁13ａを、また第２連
絡管12ｂには第２連絡弁13ｂをそれぞれ設ける。Two steam pipes (hereinafter referred to as first steam pipes) 5a each having a first combination intermediate valve 7a, 7b.
An independent system is constructed by. In addition, two steam pipes having the second combination intermediate valves 8a and 8b (hereinafter,
An independent system is configured by the second steam pipe 5b). In this embodiment, the first combination intermediate valve 7a, 7b is used.
The first steam pipe 5a on the downstream side of the
Further, the second steam pipe 5b on the downstream side of the second combination intermediate valve 8a, 8b is connected by the second connecting pipe 12b. The first communication pipe 12a is provided with a first communication valve 13a, and the second communication pipe 12b is provided with a second communication valve 13b.
【００２０】上記構成による各組合わせ中間弁７ａ，７
ｂ，８ａ，８ｂの試験は第１連絡管12ａまたは第２連絡
管12ｂに蒸気の流れを保って実施する。たとえば、第１
組合わせ中間弁７ａの試験では第１連絡弁13ａを全開し
て第１連絡管12ａから低圧タ―ビン６ａにかけての蒸気
の流れを確保する。Each combination intermediate valve 7a, 7 having the above structure
The test of b, 8a, 8b is carried out while maintaining the steam flow in the first connecting pipe 12a or the second connecting pipe 12b. For example, the first
In the test of the combination intermediate valve 7a, the first communication valve 13a is fully opened to ensure the flow of steam from the first communication pipe 12a to the low pressure turbine 6a.
【００２１】本実施例おいても、試験開始前と同様な蒸
気が確保され、湿分分離加熱器４ａ，４ｂで取扱う蒸気
量は同等に保たれる。したがって、これらの機器が大形
化するのを防ぐことができる。Also in this embodiment, the same vapor as before the start of the test is secured, and the vapor amount handled by the moisture separation heaters 4a and 4b is kept the same. Therefore, it is possible to prevent these devices from becoming large-sized.
【００２２】[0022]
【発明の効果】以上説明したように本発明は湿分分離加
熱器の出口から低圧タ―ビンの入口にかけての各再熱蒸
気系統と並列に湿分分離加熱器から低圧タ―ビンに結ぶ
系統を組合わせ中間弁を介して設けているので、組合わ
せ中間弁の試験中、湿分分離器から低圧タ―ビンへ流れ
る蒸気流量を確保することができ、湿分分離加熱器で扱
う蒸気量が各々同等に保たれ、湿分分離加熱器が大形化
するのを防止することが可能になる。As described above, the present invention is a system that connects the moisture separation heater to the low pressure turbine in parallel with each reheat steam system from the outlet of the moisture separation heater to the inlet of the low pressure turbine. Since it is provided via the combination intermediate valve, the steam flow rate from the moisture separator to the low-pressure turbine can be secured during the test of the combination intermediate valve. Are kept equal to each other, and it is possible to prevent the moisture separation heater from becoming large.
【００２３】また、各再熱蒸気系統に組合わせ中間弁の
下流側でそれぞれ連絡する連絡管を設けているので、組
合わせ中間弁の試験中、湿分分離器で扱う蒸気量が各々
同等に保たれ、湿分分離加熱器が大形化するのを防止す
ることができる。Further, since each reheat steam system is provided with a connecting pipe which communicates with the downstream side of the combined intermediate valve, the steam amount handled by the moisture separator is equal during the test of the combined intermediate valve. It is possible to prevent the moisture separation heater from increasing in size.
【図１】本発明による再熱蒸気管装置の一実施例を示す
系統図。FIG. 1 is a system diagram showing an embodiment of a reheat steam pipe apparatus according to the present invention.
【図２】本発明の他の実施例を示す系統図。FIG. 2 is a system diagram showing another embodiment of the present invention.
【図３】従来技術による装置の一例を示す系統図。FIG. 3 is a system diagram showing an example of a conventional device.
【図４】従来の流量と時間の関係を示す図。FIG. 4 is a diagram showing a relationship between a conventional flow rate and time.
４ａ，４ｂ…湿分分離加熱器、５ａ，５ｂ，９ａ，９ｂ
…蒸気管、６ａ，６ｂ…低圧タ―ビン、７ａ，７ｂ，８
ａ，８ｂ，10ａ，10ｂ，11ａ，11ｂ…組合わせ中間弁、
12ａ，12ｂ…連絡管、13ａ，13ｂ…連絡弁4a, 4b ... Moisture separation heater, 5a, 5b, 9a, 9b
... Steam pipes, 6a, 6b ... Low-pressure turbines, 7a, 7b, 8
a, 8b, 10a, 10b, 11a, 11b ... Combination intermediate valve,
12a, 12b ... communication pipe, 13a, 13b ... communication valve
Claims (2)
低圧タ―ビンの入口にかけての再熱蒸気系統を蒸気が各
該湿分分離加熱器からそれぞれの前記低圧タ―ビンに独
立した第１，第２系統によって等量づつ供給されるよう
に構成し、この独立した第１および第２系統に第１およ
び第２組合わせ中間弁をそれぞれ設けてなる原子力発電
プラントにおいて、前記組合わせ中間弁の試験中前記湿
分分離加熱器から前記低圧タ―ビンにかけて等量の蒸気
が流れるように前記第１および第２系統と並列に該湿分
分離加熱器から該低圧タ―ビンに結ぶ第３および第４系
統を第３および第４組合わせ中間弁を介してそれぞれ設
けたことを特徴とする原子力発電プラントの再熱蒸気管
装置。1. A reheat steam system from the outlets of a plurality of moisture separation heaters to the inlets of a plurality of low-pressure turbines has a steam independent from each of the moisture separation heaters to each of the low-pressure turbines. In a nuclear power plant in which the first and second systems are configured to be supplied in equal amounts and the independent first and second systems are provided with first and second combination intermediate valves, respectively. During the test of the intermediate valve, the moisture separation heater is connected to the low pressure turbine in parallel with the first and second systems so that an equal amount of steam flows from the moisture separation heater to the low pressure turbine. A reheat steam pipe apparatus for a nuclear power plant, wherein a third and a fourth system are provided via a third and a fourth combination intermediate valve, respectively.
低圧タ―ビンの入口にかけての再熱蒸気系統を蒸気が各
該湿分分離加熱器からそれぞれの前記低圧タ―ビンに独
立した第１，第２系統によって等量づつ供給されるよう
に構成し、この独立した第１および第２系統に第１およ
び第２組合わせ中間弁をそれぞれ設けてなる原子力発電
プラントにおいて、前記第１および第２系統に前記第１
組合わせ中間弁の下流側および前記第２組合わせ中間弁
の下流側でそれぞれ連絡する第１連絡管および第２連絡
管を設けたことを特徴とする原子力発電プラントの再熱
蒸気管装置。2. The reheat steam system from the outlets of the plurality of moisture separation heaters to the inlets of the plurality of low pressure turbines has a steam independent from each of the moisture separation heaters to each of the low pressure turbines. In a nuclear power plant in which the first and second systems are configured to be supplied in equal amounts, and the first and second independent intermediate valves are provided in the independent first and second systems, respectively. And the first to the second system
A reheat steam pipe apparatus for a nuclear power plant, comprising a first connecting pipe and a second connecting pipe that are connected to the downstream side of the combination intermediate valve and the downstream side of the second combination intermediate valve, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12593494A JP3638307B2 (en) | 1994-06-08 | 1994-06-08 | Reheat steam pipe device for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12593494A JP3638307B2 (en) | 1994-06-08 | 1994-06-08 | Reheat steam pipe device for nuclear power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07332018A true JPH07332018A (en) | 1995-12-19 |
| JP3638307B2 JP3638307B2 (en) | 2005-04-13 |
Family
ID=14922586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12593494A Expired - Fee Related JP3638307B2 (en) | 1994-06-08 | 1994-06-08 | Reheat steam pipe device for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3638307B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012077371A1 (en) | 2010-12-06 | 2012-06-14 | 三菱重工業株式会社 | Steam turbine, power plant, and operation method for steam turbine |
| JP2016528437A (en) * | 2013-08-23 | 2016-09-15 | シーメンス アクティエンゲゼルシャフト | Method for operating a steam turbine having two steam supply lines |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842201A (en) * | 1971-09-30 | 1973-06-20 | ||
| JPS5362001A (en) * | 1976-11-12 | 1978-06-03 | Westinghouse Electric Corp | Device for controlling temperature of low pressure turbine |
| JPS5773808A (en) * | 1980-10-24 | 1982-05-08 | Toshiba Corp | Steam drain discharging device |
| JPS57122104A (en) * | 1981-01-21 | 1982-07-29 | Hitachi Ltd | Combined reheat valve |
| JPS5948403U (en) * | 1982-09-24 | 1984-03-30 | 株式会社東芝 | Moisture separation reheating device |
| JPS5977205A (en) * | 1982-10-27 | 1984-05-02 | 株式会社日立製作所 | Water level controller |
| JPS59226205A (en) * | 1983-06-06 | 1984-12-19 | Toshiba Corp | Valve action testing device |
| JPS6017607A (en) * | 1983-07-08 | 1985-01-29 | 株式会社日立製作所 | Reheater |
| JPS6081209U (en) * | 1983-11-09 | 1985-06-05 | 株式会社日立製作所 | Combination intermediate valve test equipment |
| JPH02227504A (en) * | 1989-01-06 | 1990-09-10 | Stein Ind Sa | Method and device for protecting pipe to transfer steam from high pressure stage of turbine against erosion and corrosion |
| JPH04318206A (en) * | 1991-02-11 | 1992-11-09 | Westinghouse Electric Corp <We> | Steam turbine power generator |
-
1994
- 1994-06-08 JP JP12593494A patent/JP3638307B2/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842201A (en) * | 1971-09-30 | 1973-06-20 | ||
| JPS5362001A (en) * | 1976-11-12 | 1978-06-03 | Westinghouse Electric Corp | Device for controlling temperature of low pressure turbine |
| JPS5773808A (en) * | 1980-10-24 | 1982-05-08 | Toshiba Corp | Steam drain discharging device |
| JPS57122104A (en) * | 1981-01-21 | 1982-07-29 | Hitachi Ltd | Combined reheat valve |
| JPS5948403U (en) * | 1982-09-24 | 1984-03-30 | 株式会社東芝 | Moisture separation reheating device |
| JPS5977205A (en) * | 1982-10-27 | 1984-05-02 | 株式会社日立製作所 | Water level controller |
| JPS59226205A (en) * | 1983-06-06 | 1984-12-19 | Toshiba Corp | Valve action testing device |
| JPS6017607A (en) * | 1983-07-08 | 1985-01-29 | 株式会社日立製作所 | Reheater |
| JPS6081209U (en) * | 1983-11-09 | 1985-06-05 | 株式会社日立製作所 | Combination intermediate valve test equipment |
| JPH02227504A (en) * | 1989-01-06 | 1990-09-10 | Stein Ind Sa | Method and device for protecting pipe to transfer steam from high pressure stage of turbine against erosion and corrosion |
| JPH04318206A (en) * | 1991-02-11 | 1992-11-09 | Westinghouse Electric Corp <We> | Steam turbine power generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012077371A1 (en) | 2010-12-06 | 2012-06-14 | 三菱重工業株式会社 | Steam turbine, power plant, and operation method for steam turbine |
| US8857183B2 (en) | 2010-12-06 | 2014-10-14 | Mitsubishi Heavy Industries, Ltd. | Steam turbine, power plant and method for operating steam turbine |
| JP2016528437A (en) * | 2013-08-23 | 2016-09-15 | シーメンス アクティエンゲゼルシャフト | Method for operating a steam turbine having two steam supply lines |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3638307B2 (en) | 2005-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4191894B2 (en) | Method of operating gas / steam combined turbine facility and gas / steam combined turbine facility for implementing the method | |
| CN106887265B (en) | The start and stop shut-down system of one bulb bed modular high temperature gas cooled reactor | |
| KR880002362B1 (en) | Deaerator level control apparatus | |
| JPS58501953A (en) | Method and apparatus for regulating vapor flow from a flash tank | |
| JPS58172534A (en) | Sampling device for fluid of steam turbine system | |
| JP2004504538A (en) | Operating method of gas and steam combined turbine equipment and its equipment | |
| JPH07332018A (en) | Reheat steam pipe device in nuclear power plant | |
| JP2588243B2 (en) | Reheat steam stop valve operation test controller for steam turbine plant | |
| JPS582403A (en) | Control method and its equipment of steam separating reheater | |
| JPH0953414A (en) | Turbine steam extraction control device | |
| JPH0392507A (en) | Turbine bypass device for steam turbine | |
| JP3597683B2 (en) | Nuclear power plant | |
| JP3317536B2 (en) | Saturated drain discharge piping system | |
| JPH0814012A (en) | Control device for composite plant | |
| JPS5977394A (en) | Method and device for controlling steam rate in reheater vent for wet content separation | |
| JPH0250004A (en) | Control system of pressure inside deaerator | |
| JPH0842802A (en) | Device for controlling generating quantity of intermediate/low pressure steam in exhaust gas boiler | |
| JPH04358707A (en) | Feed water heating device for turbine plant | |
| JPS5977012A (en) | Reheating type steam turbine plant | |
| KR960032505A (en) | METHOD AND APPARATUS FOR EXTRACTING COOLANT EXHAUST GAS IN BOILING WATER RESPONSE | |
| JPS59110811A (en) | Steam turbine plant | |
| JPH0275705A (en) | Start and stop control device for moisture separation heater | |
| JPS6069218A (en) | Turbine bypass system | |
| JP2019178838A (en) | Drain recover system | |
| JPS6091108A (en) | Drain recovery device for feedwater heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20041012 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20050107 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050111 |
|
| LAPS | Cancellation because of no payment of annual fees |