CN105355238A - Sodium fire pressure relieving device and method - Google Patents

Sodium fire pressure relieving device and method Download PDF

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Publication number
CN105355238A
CN105355238A CN201510931272.8A CN201510931272A CN105355238A CN 105355238 A CN105355238 A CN 105355238A CN 201510931272 A CN201510931272 A CN 201510931272A CN 105355238 A CN105355238 A CN 105355238A
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CN
China
Prior art keywords
sodium
cover plate
relieving
pressure ignition
pressure
Prior art date
Application number
CN201510931272.8A
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Chinese (zh)
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CN105355238B (en
Inventor
杜海鸥
石文涛
王荣东
王国芝
朴君
Original Assignee
中国原子能科学研究院
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Application filed by 中国原子能科学研究院 filed Critical 中国原子能科学研究院
Priority to CN201510931272.8A priority Critical patent/CN105355238B/en
Publication of CN105355238A publication Critical patent/CN105355238A/en
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Publication of CN105355238B publication Critical patent/CN105355238B/en

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Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C9/00Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • G21C9/04Means for suppressing fires Earthquake protection
    • Y02E30/34

Abstract

The invention relates to nuclear reactor safety equipment, and aims to solve the problem of no usable mature sodium fire pressure relieving measures in China. The invention also provides a sodium fire pressure relieving device and method. The sodium fire pressure relieving device comprises a decorative panel, a sealing cover plate and a cover plate frame; the decorative panel is fixedly connected with the cover plate frame by a wall body penetrating part; The upper edge of the sealing cover plate is connected with the upper frame of the cover plate frame by a connector; the sealing cover plate can rotate by taking the connector as a shaft to be opened and closed; a permanent magnet is arranged at the lower edge of the sealing cover plate; the lower frame of the cover plate frame is provided with an attracting material capable of attracting the permanent magnet. The sodium fire pressure relieving device and method adopt a passive design and are high in reliability; the airtightness is good, and the possibility that radioactive sodium aerosol leaks to the environment is effectively reduced; the damage to a fast reactor facility at the moment of the initial sodium fire is avoided and the safety of the fast reactor is ensured.

Description

A kind of sodium pressure ignition relieving apparatus and method

Technical field

The present invention relates to a kind of nuclear reactor safety equipment, particularly a kind of sodium pressure ignition relieving apparatus and method.

Background technology

Sodium fire safety is the important content of fast reactor security consideration.Because fast reactor sodium technology room adopts the design of blockade method, between technique, sealing property is better, and when therefore there is sodium fire accident, especially at the vaporific sodium fire initial stage, room temperature pressure can raise rapidly, may cause the destruction of the building enclosure such as wall, ventilating duct between technique.

In the world the instantaneous pressure of sodium fire initial stage (especially vaporific sodium fire) is all paid much attention to, but in disclosed document all not mentioned concrete pressure releasing method and equipment therefor.

At present, the existing fast reactor scheme of China adopts Pool sodium fire as design criteria, and primary Ioops sodium technology room is air atmosphere, is configured with nitrogen flood system for putting out sodium fire.But, China can directly apply owing to there is no ripe sodium pressure ignition mitigation strategy, in addition disclosed in also not having in the world, concrete technology can be for reference, in this case, to avoid the instantaneous pressure at sodium fire initial stage (especially vaporific sodium fire) to the havoc of fast reactor facility, farthest guarantee to pile up security when sodium fire accident occurs soon, just need a kind of effective sodium pressure ignition relieving apparatus of research and development and method.

Summary of the invention

For solve China there is no ripe sodium pressure ignition mitigation strategy can problem, avoid the instantaneous pressure at sodium fire initial stage to the destruction of fast reactor facility, improve the security of fast reactor, the invention provides a kind of sodium pressure ignition relieving apparatus and method.

Described sodium pressure ignition relieving apparatus comprises decoration panel, seal cover board and cover plate framework; Described decoration panel is fixedly connected with cover plate framework by body of wall penetration piece; Described seal cover board upper limb is connected with cover plate framework upper side frame by web member, and seal cover board can, with web member place for axle rotates, be opened with closed to realize it; Described seal cover board lower edge is provided with permanent magnet, and cover plate framework lower frame is provided with and with permanent magnet, the adhesive material that attracts can occurs.

It is preferred for described seal cover board being also provided with counterweight.

Described adhesive material preferably comprises the material of iron, cobalt or nickel.

Described adhesive material is preferably iron.

Adopt above-mentioned sodium pressure ignition relieving apparatus to alleviate a method for sodium pressure ignition, the method comprises the following steps: first, according to fast reactor designing requirement, offers the pressure release orifice of reasonable quantity on the body of wall top of the adjacent sodium technology room of fast reactor; Then, at each pressure release orifice place, described sodium pressure ignition relieving apparatus is installed, and makes the decoration panel of described sodium pressure ignition relieving apparatus be positioned at the sodium technology room side that the alleviation of sodium pressure ignition is carried out in requirement.

Sodium pressure ignition relieving apparatus of the present invention is in closed condition at ordinary times, when there is sodium fire accident, if pressure reaches the limit value preset in technique, the instantaneous pressure that accident produces will push decoration panel and seal cover board open, be discharged between adjacent process, thus effectively alleviate the thermokinetics consequence of vaporific sodium fire, prevent vaporific sodium fire instantaneous pressure to the destruction of the building enclosures such as building and ventilating duct.After in technique, pressure reduces, seal cover board is closed under gravity automatically, permanent magnet and the adhesive of adhesive material, with the leakproofness between guarantee accident technique, avoid the generation that fire-suppressant gas excessive bleed and fresh air such as to enter between accident technique in a large number at the negative issue, effectively can prevent the resume combustion of sodium fire, thus the coverage of sodium fire accident is limited in same fire compartment.

In sum, sodium pressure ignition relieving apparatus of the present invention and method adopt non-active design, and reliability is high; Good airproof performance, effectively reduces radiosodium gasoloid and to leak the possibility of environment; Good compatibility is had with sodium fire fire-fighting system; The instantaneous pressure avoiding the sodium fire initial stage, to the destruction of fast reactor facility, improves the protective capacities of sodium-cooled fast reactor in sodium fire accident, ensure that the security of fast reactor.

Accompanying drawing explanation

Fig. 1 sodium pressure ignition of the present invention relieving apparatus schematic diagram.

Fig. 2 sodium pressure ignition of the present invention relieving apparatus principle of work schematic diagram.

Fig. 3 sodium pressure ignition of the present invention relieving apparatus arrangement example.

Reference numeral: 1. decoration panel, 2. body of wall penetration piece, 3. seal cover board, 4. web member, 5. permanent magnet, 6. cover plate framework.

Embodiment

Below in conjunction with accompanying drawing, embodiments of the present invention are described further.

Embodiment 1

As shown in Figure 3, at fast reactor sodium technology room A and B, between B and C, arrange sodium pressure ignition relieving apparatus as shown in Figure 1 respectively.

When between technique, vaporific sodium fire accident occurs B, between technique, in B, pressure rises rapidly.When pressure increase is to when being greater than the opening pressure limit value of sodium pressure ignition relieving apparatus, decoration panel and seal cover board are open, and between technique, B carries out pressure release to A, C between adjacent process, and its principle as shown in Figure 2.Subsequently, when when between technique, in B, pressure is reduced within limit value, sodium pressure ignition relieving apparatus is closed automatically.

If in B, pressure is increased beyond the opening pressure limit value of sodium pressure ignition relieving apparatus again between technique, then sodium pressure ignition relieving apparatus opens pressure release again automatically, so until the interior pressure stability of accident technique is within limit value.

Claims (5)

1. a sodium pressure ignition relieving apparatus, is characterized in that: described sodium pressure ignition relieving apparatus comprises decoration panel, seal cover board and cover plate framework; Described decoration panel is fixedly connected with cover plate framework by body of wall penetration piece; Described seal cover board upper limb is connected with cover plate framework upper side frame by web member, and seal cover board can, with web member place for axle rotates, be opened with closed to realize it; Described seal cover board lower edge is provided with permanent magnet, and cover plate framework lower frame is provided with and with permanent magnet, the adhesive material that attracts can occurs.
2. sodium pressure ignition relieving apparatus as claimed in claim 1, is characterized in that: described seal cover board is also provided with counterweight.
3. sodium pressure ignition relieving apparatus as claimed in claim 1, is characterized in that: described adhesive material is the material comprising iron, cobalt or nickel.
4. sodium pressure ignition relieving apparatus as claimed in claim 1, is characterized in that: described adhesive material is iron.
5. the method adopting the sodium pressure ignition relieving apparatus as described in any one of claim 1-4 to alleviate sodium pressure ignition, it is characterized in that the method comprises the following steps: first, according to fast reactor designing requirement, offer the pressure release orifice of reasonable quantity on the body of wall top of the adjacent sodium technology room of fast reactor; Then, at each pressure release orifice place, described sodium pressure ignition relieving apparatus is installed, and makes the decoration panel of described sodium pressure ignition relieving apparatus be positioned at the sodium technology room side that the alleviation of sodium pressure ignition is carried out in requirement.
CN201510931272.8A 2015-12-15 2015-12-15 A kind of sodium pressure ignition alleviates device and method CN105355238B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510931272.8A CN105355238B (en) 2015-12-15 2015-12-15 A kind of sodium pressure ignition alleviates device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510931272.8A CN105355238B (en) 2015-12-15 2015-12-15 A kind of sodium pressure ignition alleviates device and method

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Publication Number Publication Date
CN105355238A true CN105355238A (en) 2016-02-24
CN105355238B CN105355238B (en) 2018-05-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105374406A (en) * 2015-11-11 2016-03-02 中国核电工程有限公司 Fast reactor sodium fire accident smoke-extraction ventilation method and system equipment
CN105374406B (en) * 2015-11-11 2020-06-23 中国核电工程有限公司 Ventilation method and system equipment for fast reactor sodium fire accident smoke discharge

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192344A (en) * 2010-03-19 2011-09-21 戴长虹 Drainage pipeline one-way valve core
CN202253732U (en) * 2011-09-30 2012-05-30 马骁勇 Automatic start and stop type anti-explosion device
CN203839051U (en) * 2014-03-07 2014-09-17 长江勘测规划设计研究有限责任公司 Passive filtering-discharging system of underground nuclear power station
CN104676246A (en) * 2015-02-05 2015-06-03 北京理工大学 Superconducting automatic opening and closing type pressure releasing explosion-proof door
CN204407019U (en) * 2015-01-28 2015-06-17 中科华核电技术研究院有限公司 A kind of depressurized system of nuclear power station
CN204662637U (en) * 2015-05-26 2015-09-23 潘力涛 A kind of magnetic encapsulate odour-proof floor drain
CN205334970U (en) * 2015-12-15 2016-06-22 中国原子能科学研究院 Device is alleviated to sodium fire pressure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192344A (en) * 2010-03-19 2011-09-21 戴长虹 Drainage pipeline one-way valve core
CN202253732U (en) * 2011-09-30 2012-05-30 马骁勇 Automatic start and stop type anti-explosion device
CN203839051U (en) * 2014-03-07 2014-09-17 长江勘测规划设计研究有限责任公司 Passive filtering-discharging system of underground nuclear power station
CN204407019U (en) * 2015-01-28 2015-06-17 中科华核电技术研究院有限公司 A kind of depressurized system of nuclear power station
CN104676246A (en) * 2015-02-05 2015-06-03 北京理工大学 Superconducting automatic opening and closing type pressure releasing explosion-proof door
CN204662637U (en) * 2015-05-26 2015-09-23 潘力涛 A kind of magnetic encapsulate odour-proof floor drain
CN205334970U (en) * 2015-12-15 2016-06-22 中国原子能科学研究院 Device is alleviated to sodium fire pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105374406A (en) * 2015-11-11 2016-03-02 中国核电工程有限公司 Fast reactor sodium fire accident smoke-extraction ventilation method and system equipment
CN105374406B (en) * 2015-11-11 2020-06-23 中国核电工程有限公司 Ventilation method and system equipment for fast reactor sodium fire accident smoke discharge

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