GB1282315A - Stepping device - Google Patents

Stepping device

Info

Publication number
GB1282315A
GB1282315A GB46381/69A GB4638169A GB1282315A GB 1282315 A GB1282315 A GB 1282315A GB 46381/69 A GB46381/69 A GB 46381/69A GB 4638169 A GB4638169 A GB 4638169A GB 1282315 A GB1282315 A GB 1282315A
Authority
GB
United Kingdom
Prior art keywords
brake
clutch
tube
pressure
pistons
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
Application number
GB46381/69A
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
Brown Boveri und Cie AG Switzerland
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 BBC Brown Boveri AG Switzerland, Brown Boveri und Cie AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1282315A publication Critical patent/GB1282315A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/12—Means for moving control elements to desired position
    • G21C7/16—Hydraulic or pneumatic drive
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Braking Arrangements (AREA)
  • Actuator (AREA)

Abstract

1282315 Ratchet mechanisms; pipe couplings BROWN BOVERI & CO Ltd 19 Sept 1969 [21 Sept 1968] 46381/69 Heading F2G and F2Q [Also in Division G6] A linear friction ratchet for imparting stepped motion to an elongated member 4 connected to a regulator or shut-off rod 15 of a nuclear reactor, comprises a double-acting fluid operable piston 1 rigid with a tube 2 surrounding the member 4, a clutch 3 to connect the member 4 to the tube 2 during a drive stroke of the latter, and a brake 7 to hold the member 4 stationary during a return stroke of the tube 2. The clutch 3 and brake 1 comprise tubes coiled round the member 4 and inflatable by pressure fluid under the control of valves 6. The brake 7 is mounted in a fixed tube 8. To move the member 4 rapidly in an emergency, pressure is applied to a piston 10 rigid with the member 4, clutch 3 and brake 7 being released. To indicate the piston positions, permanent magnets 14 in the pistons 1, 10 actuate contacts (not shown) in a fixed central tube 13 as the pistons pass the contacts, to provide output signals. The valves 6 are connected to pipes leading to the clutch, the brake, and the pistons, by automatic sealing valves, Fig. 2, so that when a valve 6 is removed for maintenance, the withdrawal of its union 18 allows a spring 21 to bring a valve disc 19, having an annular gasket 23, against a seat 22 to prevent loss of pressure in the device. In place of the fluid-pressure operation of clutch 3 and brake 7, mechanical or electromagnetic actuation may be used.
GB46381/69A 1968-09-21 1969-09-19 Stepping device Expired GB1282315A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1789017A DE1789017C3 (en) 1968-09-21 1968-09-21 Drive device for a control rod of a nuclear reactor

Publications (1)

Publication Number Publication Date
GB1282315A true GB1282315A (en) 1972-07-19

Family

ID=5706760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46381/69A Expired GB1282315A (en) 1968-09-21 1969-09-19 Stepping device

Country Status (5)

Country Link
CH (1) CH494448A (en)
DE (1) DE1789017C3 (en)
FR (1) FR2019478A1 (en)
GB (1) GB1282315A (en)
SE (1) SE350868B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109830311A (en) * 2019-03-26 2019-05-31 四川华都核设备制造有限公司 Spindle drive chain for safe rod drive mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534074A1 (en) * 1985-09-25 1987-04-02 Bbc Brown Boveri & Cie Method for driving an absorber rod and device for carrying out the method
DE3546521A1 (en) * 1985-09-25 1987-08-06 Bbc Brown Boveri & Cie Device for the linear drive of rod-shaped members

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109830311A (en) * 2019-03-26 2019-05-31 四川华都核设备制造有限公司 Spindle drive chain for safe rod drive mechanism

Also Published As

Publication number Publication date
CH494448A (en) 1970-07-31
SE350868B (en) 1972-11-06
FR2019478A1 (en) 1970-07-03
DE1789017A1 (en) 1972-01-20
DE1789017C3 (en) 1975-08-28
DE1789017B2 (en) 1975-01-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees