JPS62259091A - Compressed gas feeder for hydraulic control unit - Google Patents
Compressed gas feeder for hydraulic control unitInfo
- Publication number
- JPS62259091A JPS62259091A JP61101973A JP10197386A JPS62259091A JP S62259091 A JPS62259091 A JP S62259091A JP 61101973 A JP61101973 A JP 61101973A JP 10197386 A JP10197386 A JP 10197386A JP S62259091 A JPS62259091 A JP S62259091A
- Authority
- JP
- Japan
- Prior art keywords
- gas supply
- control unit
- compressed gas
- pressure
- pipe
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 30
- 230000007423 decrease Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Earth Drilling (AREA)
- Air Transport Of Granular Materials (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は沸騰水型原子炉の制御捧駆動水圧系を構成する
水圧制御ユニットの圧縮ガス供給装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a compressed gas supply device for a hydraulic control unit constituting a control drive hydraulic system of a boiling water nuclear reactor.
（従来の技術）
一般に、沸騰水型原子炉の制御棒駆動機構を制御する水
圧制御ユニットには、空気作動弁からなるスクラム弁が
設けられている。このスクラム弁には、原子炉の通常運
転中圧縮空気が常時印加され、これによって平常時のス
クラム回路を非動作に保持している。(Prior Art) Generally, a water pressure control unit that controls a control rod drive mechanism of a boiling water reactor is provided with a scram valve that is an air-operated valve. Compressed air is constantly applied to this scram valve during normal operation of the nuclear reactor, thereby keeping the scram circuit inactive during normal operation.
従来上記した圧縮空気は、原子カプラント内に設置され
ている計装用圧縮空気供給装置から、その負荷の一つと
して供給されている。すなわち第４図に示すように、圧
縮機１、空気冷却器２、空気貯槽３、除湿装置４を順次
直列とした計装用圧縮空気供給装置５は、配管６を経由
して水圧制御ユニット７内のスクラム弁を含むスクラム
弁部８に接続されるとともに、図示を省略した原子カプ
ラント内の各種機器、計器類にも配管６Ａ・・・により
接続され、それぞれに圧縮空気を供給している。Conventionally, the above-mentioned compressed air is supplied as one of the loads from an instrumentation compressed air supply device installed in an atomic couplant. That is, as shown in FIG. 4, an instrumentation compressed air supply device 5 in which a compressor 1, an air cooler 2, an air storage tank 3, and a dehumidifier 4 are connected in series is connected to a water pressure control unit 7 via piping 6. It is connected to the scram valve part 8 including the scram valve, and is also connected to various devices and instruments in the atomic couplant (not shown) through piping 6A, and supplies compressed air to each of them.
（発明が解決しようとする問題点）
計装用圧縮空気供給装置５は、水圧制御ユニット７以外
にも池数の機器類に圧縮空気を供給しているため、多数
の枝配管６Ａ・・・が分岐していることもあり、これら
の配管からの空気漏洩その他の原因により空気圧が低下
した場合、スクラム弁への印加空気圧も低下する。(Problems to be Solved by the Invention) Since the instrumentation compressed air supply device 5 supplies compressed air to a number of devices in addition to the water pressure control unit 7, a large number of branch pipes 6A... Because they are branched, if the air pressure decreases due to air leakage from these piping or other causes, the air pressure applied to the scram valve will also decrease.
スクラム弁は、上述したとおり、印加空気圧が低下した
とき、水圧制御ユニット７にスクラム動作をおこなわせ
るようになっているので、計装用圧縮空気供給装置５系
統の空気圧低下に起因して不要なスクラムを誘発し、原
子炉が停止してしまうおそれがあった。As mentioned above, the scram valve is designed to cause the water pressure control unit 7 to perform a scram operation when the applied air pressure decreases. There was a risk that the reactor would shut down.
本発明は計装用圧縮空気供給装置の空気圧低下によって
スクラム機能が不所望に反応することを回避し、原子炉
の運転を継続することができる水圧制御ユニットの圧縮
ガス供給装置を提供することを目的とする。An object of the present invention is to provide a compressed gas supply device for a hydraulic control unit that can avoid an undesired reaction of the scram function due to a drop in air pressure in the instrumentation compressed air supply device, and can continue operation of a nuclear reactor. shall be.
（問題点を解決するための手段）
本発明においては、制御棒駆動機構を制御する水圧制御
ユニットにガス供給配管を経由してガス圧を供給する圧
縮ガス供給手段が設けられ、水圧制御ユニットに与えら
れるスクラム指令が在存せず、且つガス圧が存在すると
き、水圧制御ユニットに設けられたスクラム弁部を非作
動に保持するようにされた水圧制御ユニットの圧縮ガス
供給装置に、ガス供給配管に合流する第２の配管を経由
してガス圧を供給可能に設けられた第２の圧縮ガス供給
手段と、ガス供給配管の圧力検出手段と、この圧力検出
手段の検出値が設定値より低下したとき、第１の圧縮ガ
ス供給手段に代えて第２の圧縮ガス供給手段を供用させ
る切換手段とを設けた。(Means for Solving the Problems) In the present invention, compressed gas supply means is provided for supplying gas pressure via gas supply piping to the hydraulic control unit that controls the control rod drive mechanism. When there is no scram command given and gas pressure is present, gas is supplied to the compressed gas supply device of the hydraulic control unit which is adapted to hold the scram valve section provided in the hydraulic control unit inoperative. a second compressed gas supply means provided to be able to supply gas pressure via a second pipe that merges with the pipe; a pressure detection means for the gas supply pipe; and a detection value of the pressure detection means that is lower than a set value. A switching means is provided for making the second compressed gas supply means available in place of the first compressed gas supply means when the pressure decreases.
（作 用）
常態時には、第１の圧縮ガス供給手段を用いて水圧制御
ユニットが加圧されているので、スクラム弁部は、別途
にスクラム指令が与えられない限り作動しない。(Function) In normal conditions, the water pressure control unit is pressurized using the first compressed gas supply means, so the scram valve section does not operate unless a scram command is separately given.
第１の圧縮ガス供給手段の圧力が、何等がの原因で低下
するような非正常状態が発生した場合、この圧力低下は
圧力検出手段によって検知され、これが設定値より低下
したときは、第１の圧縮ガス供給手段からの供給は除外
され、代りに第２の圧縮ガス供給手段によって水圧制御
ユニットが加圧される。If an abnormal condition occurs in which the pressure of the first compressed gas supply means decreases for some reason, this pressure drop is detected by the pressure detection means, and when this decreases below the set value, the pressure of the first compressed gas supply means is detected. The supply from the second compressed gas supply means is omitted and instead the hydraulic control unit is pressurized by the second compressed gas supply means.
これによって第１の圧縮ガス供給手段の加圧力が失われ
ても、スクラム弁部の加圧機能は維持される。したがっ
て常に安全側に作用するように構成されているスクラム
弁部が、加圧力の喪失によって、不測の原子炉スクラム
を生起するようなことは防止される。As a result, even if the pressurizing force of the first compressed gas supply means is lost, the pressurizing function of the scram valve section is maintained. Therefore, the scram valve section, which is configured to always act on the safe side, is prevented from causing an unexpected reactor scram due to loss of pressurizing force.
（実施例）
以下第１図を参照しながら本発明の一実施例について説
明する。(Example) An example of the present invention will be described below with reference to FIG.
第１図において、計装用圧縮空気供給装置５は、水圧制
御ユニット７のスクラム弁部８と配管６によって接続さ
れている。まは配管６がら分岐した配管６Ａ・・・は、
図示を省略した計装用機器類に接続されている。配管６
には、計装用圧縮空気供給装置５側から開閉弁９．逆止
弁１０．アキュムレータ】ｌがこの順に介挿され開閉弁
９は常時開弁されている。計装用圧縮空気供給装置５と
は別に、圧縮ガス供給装置１２が設けられ、配管６の逆
止弁１０とアキュムレータ１１の間に配管１３によって
接続されている。配管１３には、圧縮ガス供給装置１２
側から順に開閉弁１４および逆止弁１５が介挿され開閉
弁１４は常時閉弁されている。アキュムレータ１１には
圧力検出器１Ｇが設けられ、この圧力検出器１６は、ケ
ーブル１フによって開閉弁９および１４と電気的に接続
され、圧力検出器１６の検出値が設定された値より低下
したとき、開閉弁９に開弁信号を送出し。In FIG. 1, an instrumentation compressed air supply device 5 is connected to a scram valve section 8 of a water pressure control unit 7 by a pipe 6. As shown in FIG. Well, the pipe 6A branched from the pipe 6...
It is connected to instrumentation equipment not shown. Piping 6
, the on-off valve 9. is connected from the instrumentation compressed air supply device 5 side. Check valve 10. The accumulator 1 is inserted in this order, and the on-off valve 9 is kept open at all times. A compressed gas supply device 12 is provided separately from the instrumentation compressed air supply device 5, and is connected between the check valve 10 of the pipe 6 and the accumulator 11 by a pipe 13. A compressed gas supply device 12 is connected to the pipe 13.
An on-off valve 14 and a check valve 15 are inserted in order from the side, and the on-off valve 14 is always closed. The accumulator 11 is provided with a pressure detector 1G, and this pressure detector 16 is electrically connected to the on-off valves 9 and 14 by a cable 1f, and the detected value of the pressure detector 16 is lower than the set value. At this time, a valve opening signal is sent to the on-off valve 9.
同時に開閉弁１４には開弁信号を送出するようになって
いる。At the same time, a valve opening signal is sent to the on-off valve 14.
次に作用を説明する。Next, the effect will be explained.
通常時、計装用圧縮空気供給装置５の送出する空気が、
配管６を通じ、開弁された開閉弁９．逆止弁１０．アキ
ュムレータ１１を経てスクラム弁部８を加圧している。Normally, the air sent out by the instrumentation compressed air supply device 5 is
An open/close valve 9 is opened through the pipe 6. Check valve 10. The scram valve section 8 is pressurized via the accumulator 11.
圧力検出器１６の検出値は設定値を超えており、圧縮ガ
ス供給装置１１２のガス圧は、開閉弁１４が閉弁してい
るので遮断され、アキュムレータ１１乃至はスクラム弁
部８に到達することはない。The detected value of the pressure detector 16 exceeds the set value, and the gas pressure of the compressed gas supply device 112 is cut off because the on-off valve 14 is closed, and the gas pressure does not reach the accumulator 11 or the scram valve section 8. There isn't.
配管６に接続されているアキュムレータ１１の圧力が低
下するような事態が発生し、圧力検出器１６の検出値が
設定値より低下すると、開閉弁９は閉止され開閉弁１４
を開放するので、送出圧力が低下した計装用圧縮空気供
給装置５に代って、圧縮ガス供給装置１２のガス圧が置
換され、スクラム弁部８を加圧する。When a situation occurs in which the pressure in the accumulator 11 connected to the pipe 6 decreases and the detected value of the pressure detector 16 falls below the set value, the on-off valve 9 is closed and the on-off valve 14 is closed.
is opened, the gas pressure of the compressed gas supply device 12 is replaced in place of the instrumentation compressed air supply device 5 whose delivery pressure has decreased, and the scram valve section 8 is pressurized.
なお圧縮ガス供給袋ｖ１１２としては例えば原子炉格納
容器調気系の窒素貯蔵タンクの出力を適宜減圧したもの
を用いることができる。もちろん別置の窒素貯蔵タンク
等を使用してもよい。As the compressed gas supply bag v112, for example, the output of the nitrogen storage tank of the reactor containment vessel air conditioning system can be appropriately reduced in pressure. Of course, a separate nitrogen storage tank or the like may also be used.
次に本発明の他の実施例を第２図を参照しながら説明す
る。Next, another embodiment of the present invention will be described with reference to FIG.
第２図においては、第１図における開閉弁９゜１４、逆
止弁１０．１５を廃止し、配管６と配管１３の合流点に
三方弁１８を設けた。三方弁１８は、通常時配管６の上
流側と７キユムレ一タ１１間が開通し、圧力検出器１６
の検出値が設定値より低下したとき、ケーブル１７の信
号により配管１３とアキュムレータ間が開通するように
なされている。 ・次に本発明のさらに他の
実施例を第３図を参照しながら説明する。In FIG. 2, the on-off valve 9.14 and the check valve 10.15 in FIG. 1 are eliminated, and a three-way valve 18 is provided at the junction of the pipe 6 and pipe 13. The three-way valve 18 is normally open between the upstream side of the piping 6 and the pressure detector 11, and the pressure detector 16
When the detected value falls below the set value, a signal from the cable 17 causes the connection between the pipe 13 and the accumulator to be opened. -Next, still another embodiment of the present invention will be described with reference to FIG.
第３図においては、第１図におけるアキュムレータ１１
を廃止して、圧力検出器１６を配管６上に直接設置し、
さらに開閉弁９と逆止弁１５を廃止しである。圧力検出
器１６の検出値が設定値より低下したとき、開閉弁１４
は開弁され、圧縮ガス供給装置１２の圧力がスクラム弁
部８に印加される。このガス圧は逆上弁１０の作用によ
り、低圧となった配管６の上流側に漏洩することはない
。In FIG. 3, the accumulator 11 in FIG.
is abolished, and the pressure detector 16 is installed directly on the piping 6,
Furthermore, the on-off valve 9 and check valve 15 are eliminated. When the detected value of the pressure detector 16 falls below the set value, the on-off valve 14
is opened, and the pressure of the compressed gas supply device 12 is applied to the scram valve section 8. Due to the action of the reverse valve 10, this gas pressure does not leak to the upstream side of the pipe 6 where the pressure has become low.
本発明によれば、制御棒駆動機構の水圧制御ユニットへ
の加圧力を中断することなく維持することが可能となり
、原子炉が所要外にスクラムする機会を低減して運転を
継続することができる。According to the present invention, it is possible to maintain the pressurizing force on the hydraulic control unit of the control rod drive mechanism without interruption, and it is possible to continue operation while reducing the chance of the reactor scramming unnecessarily. .
第１図は本発明の一実施例を示す系統図、第２図は本発
明の他の実施例を示す系統図、第３図は本発明のさらに
他の実施例を示す系統図、第４図は従来例を示す系統図
である。
５・・・計装用圧縮空気供給装置 ６・・・配管７・
・・水圧制御ユニット ８・・・スクラム弁部９・・
・開閉弁 １０・・・逆止弁１２・・・圧
縮ガス供給装置 １３・・・配管１４・・・開閉弁
１６・・・圧力検出器１８・・・三方弁
代理人 弁理士 則 近 憲 佑
同 三俣弘文
ん
第 １ 図
第 ２ 図
第 ３ 図
第 ４ 図FIG. 1 is a system diagram showing one embodiment of the present invention, FIG. 2 is a system diagram showing another embodiment of the invention, FIG. 3 is a system diagram showing still another embodiment of the invention, and FIG. The figure is a system diagram showing a conventional example. 5... Compressed air supply device for instrumentation 6... Piping 7.
...Water pressure control unit 8...Scram valve section 9...
・On-off valve 10...Check valve 12...Compressed gas supply device 13...Piping 14...On-off valve
16...Pressure detector 18...Three-way valve agent Patent attorney Noriyuki Chika Ken Yudo Mitsumata Hirofumi Figure 1 Figure 2 Figure 3 Figure 4
Claims (4)
ス供給配管を経由してガス圧を供給する圧縮ガス供給手
段が設けられ、前記水圧制御ユニットに与えられるスク
ラム指令が在存せず且つ前記ガス圧が存在するとき、前
記水圧制御ユニットに設けられたスクラム弁部を非作動
に保持するようにされた水圧制御ユニットの圧縮ガス供
給装置において、 前記ガス供給配管に合流する第２の配管を経由してガス
圧を供給可能に設けられた第２の圧縮ガス供給手段と、 前記ガス供給配管の圧力検出手段と、 この圧力検出手段の検出値が設定値より低下したとき、
第１の前記圧縮ガス供給手段に代えて前記第２の圧縮ガ
ス供給手段を供用させる切換手段と、 を設けた水圧制御ユニットの圧縮ガス供給装置。(1) A compressed gas supply means is provided for supplying gas pressure via a gas supply pipe to a hydraulic control unit that controls a control rod drive mechanism, and there is no scram command given to the hydraulic control unit, and In a compressed gas supply device for a water pressure control unit configured to hold a scram valve provided in the water pressure control unit inoperative when gas pressure is present, a second pipe that joins the gas supply pipe is provided. a second compressed gas supply means provided to be able to supply gas pressure via the gas supply pipe; a pressure detection means for the gas supply piping; and when the detected value of the pressure detection means falls below a set value;
A compressed gas supply device for a hydraulic control unit, comprising: a switching means for using the second compressed gas supply means in place of the first compressed gas supply means.
２の配管にそれぞれ設けられ前記圧力検出手段により制
御される開閉弁とした特許請求の範囲第１項に記載の水
圧制御ユニットの圧縮ガス供給装置。(2) Compressed gas supply for the water pressure control unit according to claim 1, wherein the switching means is an on-off valve that is provided in each of the gas supply piping and the second piping and is controlled by the pressure detection means. Device.
管の合流点に設けられ前記圧力検出手段により制御され
る三方弁とした特許請求の範囲第１項記載の水圧制御ユ
ニットの圧縮ガス供給装置。(3) The compressed gas of the water pressure control unit according to claim 1, wherein the switching means is a three-way valve provided at the confluence of the gas supply pipe and the second pipe and controlled by the pressure detection means. Feeding device.
止弁と前記第２の配管に設けられ前記圧力検出手段によ
り制御される開閉弁とした特許請求の範囲第１項に記載
の水圧制御ユニットの圧縮ガス供給装置。(4) Water pressure according to claim 1, wherein the switching means is a check valve provided in the gas supply pipe and an on-off valve provided in the second pipe and controlled by the pressure detection means. Compressed gas supply device for the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61101973A JPS62259091A (en) | 1986-05-06 | 1986-05-06 | Compressed gas feeder for hydraulic control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61101973A JPS62259091A (en) | 1986-05-06 | 1986-05-06 | Compressed gas feeder for hydraulic control unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62259091A true JPS62259091A (en) | 1987-11-11 |
Family
ID=14314809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61101973A Pending JPS62259091A (en) | 1986-05-06 | 1986-05-06 | Compressed gas feeder for hydraulic control unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62259091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015212565A (en) * | 2014-05-07 | 2015-11-26 | 大陽日酸株式会社 | Cylinder cabinet |
-
1986
- 1986-05-06 JP JP61101973A patent/JPS62259091A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015212565A (en) * | 2014-05-07 | 2015-11-26 | 大陽日酸株式会社 | Cylinder cabinet |
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