GB1513775A - Nuclear reactor installation including a control valve - Google Patents
Nuclear reactor installation including a control valveInfo
- Publication number
- GB1513775A GB1513775A GB26045/75A GB2604575A GB1513775A GB 1513775 A GB1513775 A GB 1513775A GB 26045/75 A GB26045/75 A GB 26045/75A GB 2604575 A GB2604575 A GB 2604575A GB 1513775 A GB1513775 A GB 1513775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- steam
- pressure
- piston
- open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
- G21D3/06—Safety arrangements responsive to faults within the plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/50—Preventing rotation of valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
- F16K1/523—Means for additional adjustment of the rate of flow for limiting the maximum flow rate, using a stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/52—Means for additional adjustment of the rate of flow
- F16K1/526—Means for additional adjustment of the rate of flow for limiting the maximum flow rate, using a second valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/042—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with locking or disconnecting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
1513775 Fluid-pressure servomotor systems KRAFTWERK UNION AG 18 June 1975 [26 June 1974 26 Sept 1974] 26045/75 Heading G3P [Also in Divisions F2 and G6] A safety valve 8, Figs. 1 and 2, in the live steam line 2 of a nuclear reactor installation, comprises a normally open valve-member 22 controlled by a mechanism sensitive to pressure to rapidly close or almost close the valve when the pressure falls below its normal operating value and to re-open the valve by at most half its fully-open throughflow cross-section if the pressure subsequently rises above a predetermined value in excess of the normal operating value. The valve 8 is located in a safety envelope 3 of the installation together with steam generator 1 and safety valve 13. Outside the envelope the line 2 is associated with a branch 16 having a further safety valve 17 and blow-off regulating valves 20. The valve, Fig. 2, is normally forced fully open by the steam pressure in line 2. However, should the steam-pressure fall, e.g. due to a fracture in the line, sensors would cause hydraulic pressure fluid to be supplied from an accumulator 50 to the space above piston 36 and thereby force the valve-member 22 to close. If, thereafter, the steam-pressure increases to a dangerous level, e.g. because the reactor is not shut-down quickly, it re-opens the valve-member 22 but only by an amount set by an adjustable stop 42. The amount is up to one-half, preferably 30%, of its fully-open flow cross-section. Additionally an adjustable stop 47 may be provided so that when the valve-member 22 is moved towards its closed position it is prevented from completely closing for a short time, e.g. 20 seconds. Alternatively, the final closing movement of the valve may be controlled by a clockwork timing mechanism. In an alternative valve, Fig. 6, the valve-member is actuated by a pair of pistons 116, 121 operating in a common cylinder, the steampressure upstream of the valve-member being communicable with opposite ends of the cylinder via two 2-3 way pressure-responsive valves 126, 128. In the event of damage to the steam system, steam is delivered through valve 128 to act upon piston 116 and close the valve-member 102 as shown. If steam-pressure thereafter rises to about 80 bars, the valve 126 switches to allow the steam to act on piston 121 which, assisted by steam-pressure acting on the valve-member, causes the latter to partially open until piston 121 abuts a stop 122. If the steam-pressure rises further to 88 bars then the valve 128 switches to exhaust the steam from above the piston 116 whereby the valve-member is further opened by an amount determined by stops 142. Complete closure of the valve-member can be effected by delivering compressed air through conduit 134. A pointer 145 and scale 146 indicate the position of the valve-member. Alternative reactor installations incorporating the valve are illustrated in Figs. 3 and 4 (not shown).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2430724A DE2430724C3 (en) | 1974-06-26 | 1974-06-26 | Controllable valve |
DE2446044A DE2446044C3 (en) | 1974-09-26 | 1974-09-26 | Controllable valve in a nuclear reactor plant |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1513775A true GB1513775A (en) | 1978-06-07 |
Family
ID=25767328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26045/75A Expired GB1513775A (en) | 1974-06-26 | 1975-06-18 | Nuclear reactor installation including a control valve |
Country Status (6)
Country | Link |
---|---|
JP (2) | JPS5117799A (en) |
CH (1) | CH580858A5 (en) |
FR (1) | FR2276666A1 (en) |
GB (1) | GB1513775A (en) |
NL (1) | NL7506517A (en) |
SE (1) | SE414978B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013019374A1 (en) | 2011-08-03 | 2013-02-07 | Westinghouse Electric Company Llc | Nuclear steam generator steam nozzle flow restrictor |
WO2022129948A1 (en) * | 2020-12-18 | 2022-06-23 | HydroHammer Limited | Electronic ram pump controller |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54153996A (en) * | 1978-05-25 | 1979-12-04 | Toshiba Corp | Sub-cooling sea water system for emergency |
JP2654236B2 (en) * | 1990-06-14 | 1997-09-17 | 株式会社東芝 | Main steam isolation valve |
CN115126552B (en) * | 2022-07-26 | 2024-06-04 | 中国船舶集团有限公司第七〇四研究所 | Flow valve group structure with safety valve arranged outside machine |
-
1975
- 1975-06-02 NL NL7506517A patent/NL7506517A/en not_active Application Discontinuation
- 1975-06-13 SE SE7506801A patent/SE414978B/en unknown
- 1975-06-16 FR FR7518740A patent/FR2276666A1/en active Granted
- 1975-06-18 GB GB26045/75A patent/GB1513775A/en not_active Expired
- 1975-06-19 CH CH797475A patent/CH580858A5/xx not_active IP Right Cessation
- 1975-06-24 JP JP50078560A patent/JPS5117799A/ja active Pending
-
1983
- 1983-03-14 JP JP1983036770U patent/JPS5937758Y2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013019374A1 (en) | 2011-08-03 | 2013-02-07 | Westinghouse Electric Company Llc | Nuclear steam generator steam nozzle flow restrictor |
EP2740126A1 (en) * | 2011-08-03 | 2014-06-11 | Westinghouse Electric Company LLC | Nuclear steam generator steam nozzle flow restrictor |
EP2740126A4 (en) * | 2011-08-03 | 2015-04-15 | Westinghouse Electric Corp | Nuclear steam generator steam nozzle flow restrictor |
US9091429B2 (en) | 2011-08-03 | 2015-07-28 | Westinghouse Electric Company Llc | Nuclear steam generator steam nozzle flow restrictor |
WO2022129948A1 (en) * | 2020-12-18 | 2022-06-23 | HydroHammer Limited | Electronic ram pump controller |
Also Published As
Publication number | Publication date |
---|---|
JPS58165699U (en) | 1983-11-04 |
JPS5937758Y2 (en) | 1984-10-19 |
SE7506801L (en) | 1975-12-29 |
NL7506517A (en) | 1975-12-30 |
FR2276666B1 (en) | 1983-02-25 |
JPS5117799A (en) | 1976-02-12 |
FR2276666A1 (en) | 1976-01-23 |
CH580858A5 (en) | 1976-10-15 |
SE414978B (en) | 1980-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |