CN106782680B - Inhibit the new structure of sloshing phenomenon in voltage-stablizer - Google Patents
Inhibit the new structure of sloshing phenomenon in voltage-stablizer Download PDFInfo
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- CN106782680B CN106782680B CN201611085151.7A CN201611085151A CN106782680B CN 106782680 B CN106782680 B CN 106782680B CN 201611085151 A CN201611085151 A CN 201611085151A CN 106782680 B CN106782680 B CN 106782680B
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- spacer
- voltage
- stablizer
- under
- sloshing phenomenon
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
- G21C1/08—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor
- G21C1/09—Pressure regulating arrangements, i.e. pressurisers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/024—Supporting constructions for pressure vessels or containment vessels
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention discloses a kind of new structure inhibiting sloshing phenomenon in voltage-stablizer, include the spacer and under spacer inside voltage-stablizer, spacer is in the tubular structure extended along the short transverse of voltage-stablizer under spacer, voltage-stablizer bottom is fixed in the lower end of under spacer, spacer is fixed on above under spacer and spacer is connected to under spacer, the radial dimension of spacer is more than the radial dimension of under spacer, and the upper end of spacer is opening-like.Voltage-stablizer inner space is separated into inside and outside two parts by upper and lower separator, to reduce space blade diameter length ratio, makes the more difficult generation of sloshing phenomenon；Fluid flow rate is limited radially simultaneously, protects chamber wall；Meanwhile, it is capable to ensure that voltage-stablizer bottom-heated stick will not be exposed；Furthermore it is ensured that in voltage-stablizer level measuring precision.As it can be seen that the utility model structure is conducive to improve npp safety, reliability and economy.
Description
Technical field
The present invention relates to nuclear power plant's main cooling system technical field more particularly to a kind of voltage-stablizer internal structures.
Background technology
Voltage-stablizer is used in nuclear reactor primary Ioops, is the important composition device of nuclear power plant's main cooling system, in primary Ioops
When generation accident leads to pressure rise or reduces, automatically adjust pressure to primary Ioops, to ensure the normal work of primary Ioops
Make.
Environment residing for the nuclear power plant of sea base is harsher with respect to continental rise nuclear power plant, external in wind, wave and ocean current etc.
Under the influence of condition, carry nuclear power plant maritime floating platform or ship can run-off the straight, the movements such as rise and fall, wave.At this point,
The water surface in nuclear power plant's voltage-stablizer will appear nonlinear sloshing phenomenon, in this case, the water slug voltage stabilizing in voltage-stablizer
Device chamber wall causes voltage-stablizer inner wall different degrees of surge.When surge is bigger, sloshing phenomenon is possible to
Directly jeopardize the structural intergrity of voltage-stablizer.Meanwhile surge caused by rocking can produce the level measuring in voltage-stablizer
Raw significantly to influence, when occurring sloshing phenomenon in voltage-stablizer, the water level of measurement is higher or lower than actual water level, in this feelings
Under condition, water level control system frequent movement is caused, it could even be possible to leading to the false triggering of safety signal.In addition, working as sloshing phenomenon
It when comparing violent, is likely to occur exposed at the top of the heating rod in voltage-stablizer, causes heating rod that cannot cool down and burn in time.Such as
Fruit cannot effectively inhibit the sloshing phenomenon in voltage-stablizer, safety, reliability and the economy of nuclear power plant that will all drop significantly
It is low.
To improve safety, reliability and the economy of nuclear power plant, it is necessary to which providing a kind of can inhibit sloshing phenomenon
Voltage-stablizer internal structure.
Invention content
The purpose of the present invention is to provide a kind of voltage-stablizer internal structures that can inhibit sloshing phenomenon.
To achieve the goals above, the present invention provides a kind of new structures of sloshing phenomenon in inhibition voltage-stablizer, including
Spacer inside voltage-stablizer and under spacer, spacer are prolonged in the short transverse along voltage-stablizer under spacer
Voltage-stablizer bottom is fixed in the lower end of the tubular structure stretched, under spacer, and spacer is fixed on above under spacer and under
Separator is connected to, and the radial dimension of spacer is more than the radial dimension of under spacer, and the upper end of spacer is opening-like.
Compared with prior art, the present invention inhibits the new structure of sloshing phenomenon in voltage-stablizer to has the following advantages：
One, the separator of tubular by the space that cooling water is accommodated in voltage-stablizer be divided within separator with except separator
Two parts.The blade diameter length ratio of known vessel is smaller, liquid therein be just less susceptible to occur sloshing phenomenon, and by spacer, under
The two-part blade diameter length ratio that separator isolates is both less than original space not being spaced in voltage-stablizer, therefore is sent out in this two parts
The probability at the raw scene of rocking is all lower, and the setting of separator effectively inhibits sloshing phenomenon.
Two, the presence of upper and lower separator limits the maximum flow rate that water in container radially flows, even if in severe ring
A degree of sloshing phenomenon is produced under the conditions of border, in voltage-stablizer, flow velocity radially is restricted, in such case
Under, impact force suffered by chamber wall makes the structure of voltage-stablizer be hardly damaged also than relatively limited.
Three, the entirety that spacer and under spacer form is the shape that upper end is big and lower end is small, this overall structure pair
The water of bottom plays the role of " suppressing " in voltage-stablizer, and voltage-stablizer bottom is made to be more difficult to sloshing phenomenon occur, it is ensured that even if in pole
It holds under harsh conditions, the heating rod positioned at voltage-stablizer bottom is all not in exposed situation, prevents heating rod from burning out.
Four, by inhibiting sloshing phenomenon, it is ensured that the water level measuring point in voltage-stablizer is unaffected, to improve level measuring
Precision.
To sum up, the present invention inhibits the new structure of sloshing phenomenon in voltage-stablizer that can improve the safety, reliable of nuclear power plant
Property and economy.
Preferably, the top of spacer is less than the normal work water level in voltage-stablizer.
Preferably, further including transition separator in hollow structure, the radial dimension of transition separator upper end is isolated on
The radial dimension of part is identical, and the radial dimension of transition separator lower end is identical as the radial dimension of under spacer, transition separator
Lower end be fixed on the upper end of under spacer, the upper end of transition separator is fixed in the lower end of spacer.
Preferably, being fixed with several heating rods positioned at bottom in voltage-stablizer, several heating rods are arranged into several circles, under
The top of separator is higher than the top of heating rod, and the radial dimension of spacer is more than the circle that outermost heating rod is surrounded
Circle.
Preferably, spacer is cylinder-like structure under spacer, the diameter of spacer is more than under spacer
Diameter.
Specifically, spacer and under spacer are in concentric setting with voltage-stablizer.
It is taken over preferably, the bottom of voltage-stablizer is provided with Surge line piping, under spacer is taken over Surge line piping and is connected to.
Specifically, under spacer is cylinder-like structure, and the diameter of under spacer is equal to the diameter that Surge line piping is taken over.
Description of the drawings
Fig. 1 is provided with the sectional view of the new structural voltage-stablizer of the present invention.
Fig. 2 is the sectional view in voltage-stablizer directions A along Fig. 1.
Fig. 3 is the sectional view in voltage-stablizer directions B along Fig. 1.
Fig. 4 is schematic diagram when liquid rocks in voltage-stablizer.
Specific implementation mode
Description is made to presently preferred embodiments of the present invention with reference to the Figure of description provided.
In conjunction with shown in Fig. 1 to Fig. 3, the present invention provides a kind of new structures of sloshing phenomenon in inhibition voltage-stablizer, including
Spacer 21, under spacer 22 inside voltage-stablizer 1 and transition separator 23.
Voltage-stablizer 1 includes cylindrical tube 11 and is fixed on the hemispheric upper cover 12 of 11 upper end of cylinder, is fixed on cylinder
The hemispheric low head 13 of 11 lower end of body.Be provided on upper cover 12 safety valve connecting pipe 121 being connected to the inside of voltage-stablizer 1,
Spray take over 122 and a manhole 123 for personnel's disengaging.It is correspondingly arranged on inside upper cover 12 and 122 company of spray take over
The spray head connect, spray take over 122 are fetched water from cold tube section, by spray head by the lower water spray of temperature in voltage-stablizer 1
The steam space in portion.The Surge line piping take over 131 that the centre position setting one of low head 13 is connected to 1 inside of voltage-stablizer, voltage-stablizer 1
It is connect with Surge line piping by Surge line piping take over 131, Surge line piping is connect with nuclear power plant primary Ioops.
The upper end of cylinder 11 is provided with several pressure-measuring-points 111 and several upper water level measuring points 112, several pressure-measuring-points
111 with several upper being circumferentially arranged rotating around cylinder 11 of water level measuring point 112, and the circle that wherein pressure-measuring-point 111 surrounds is located at upper
The top for the circle that water level measuring point 112 surrounds.The position of upper water level measuring point 112 is far above the normal work water level in voltage-stablizer 1
C, and ensure to rock the position that upper water level measuring point 112 is also not achieved in caused water-level fluctuation under the conditions of extreme external drive
It sets.The lower end of cylinder 11 is provided with several temperature points 113 and several lower water level measuring points 114, if several temperature points 113 with
Dry lower 114 being circumferentially arranged rotating around cylinder 11 of water level measuring point, the circle that wherein temperature point 113 surrounds are located at lower water level measuring point
The top of 114 circles surrounded, the position of lower water level measuring point 114 is as close to the bottom of cylinder 11.In the specific implementation, it presses
Power measuring point 111, upper water level measuring point 112, temperature point 113, lower water level measuring point 114 are all specifically to be opened in leading on cylinder 11
Hole, size are related with applicable sensor.By differential pressure pickup respectively with upper water level measuring point 112 and lower water level measuring point
114 are connected, and by the upper water level measuring point 112 of measurement and pressure, water temperature in the pressure difference and voltage-stablizer 1 of lower water level measuring point 114, obtain
To the actual water level in voltage-stablizer 1.The quantity of above-mentioned various measuring points in the present embodiment, which is subject to, disclosure satisfy that measurement demand, very
It extremely can only setting one.
Several heating rods 14 positioned at bottom are fixed in voltage-stablizer 1, several heating rods 14 are arranged into several circles, specifically
, the quantity of heating rod 14 is 16 in the present embodiment, wherein 8 heating rods 14 are arranged into one around the central axis of voltage-stablizer 1
A circle, in addition 8 heating rods 14 circle of another diameter bigger is arranged into around the central axis of voltage-stablizer 1.
Spacer 21 is in the cylinder extended along the short transverse of voltage-stablizer 1 under spacer 22, spacer 21
Diameter is more than the diameter of under spacer 22, and transition separator 23 is the hollow structure that outer profile is round platform, and transition separator 23
The diameter of upper end is equal to the diameter of spacer 21, and the diameter of 23 lower end of transition separator is equal to the diameter of under spacer 22.Under
The lower end of separator 22 is fixed on the middle position of 1 bottom of voltage-stablizer and is connected to Surge line piping take over 131, transition separator 23
The upper end of under spacer 22 is fixed in lower end, and the upper end of transition separator 23, spacer are fixed in the lower end of spacer 21
21 upper end is opening-like.Spacer 21 is connected to by transition separator 23 under spacer 22.
In the voltage regulator 1, spacer 21, under spacer 22 and transition separator 23 are all with voltage-stablizer 1 in concentric
Setting.Also, the top of under spacer 22 is higher than the top of heating rod 14, and the diameter of spacer 21 is more than the heating rod of outer layer
The diameter of 14 circles surrounded.The top of spacer 21 is less than the normal work water level C in voltage-stablizer 1.
Spacer 21, under spacer 22 and transition separator 23 be respectively adopted stainless steel molding after be welded into one it is whole
Body.The thickness of three separators need to ensure its mechanical strength under the conditions of rocking.
It is that the present invention inhibits different situations of the new structure of 1 inside sloshing phenomenon of voltage-stablizer under different operating modes below：
1) when without external drive condition.
When nuclear power plant is in normal operating condition, the water level in voltage-stablizer 1 maintains normal work water level C, by adding
Water in voltage-stablizer 1 is heated to be saturated by hot pin 14, and 1 top of voltage-stablizer is saturated vapor.Pass through the side of heating rod 14 and spray
Formula maintains primary Ioops pressure in normal operation pressure.Be not at this time sloshing phenomenon in voltage-stablizer 1.
The actual water level in voltage-stablizer 1 is obtained by differential pressure pickup, pressure sensor and temperature sensor, according to voltage stabilizing
1 pressure of device, actual water level are controlled, and maintain primary Ioops pressure and 1 water level of voltage-stablizer in normal operation range.
2) when nuclear power plant is in the normal operating condition under the conditions of external drive.
Under the conditions of external drive, voltage-stablizer 1 is moved with floating platform or ship, at this point, in spacer 21
Under the action of under spacer 22, fluctuation by a small margin occurs for the water level in voltage-stablizer 1, as shown in Figure 4.Upper water in voltage-stablizer 1
Position measuring point 112, lower water level measuring point 114 will not be influenced by the condition of rocking, and ensure nuclear power plant by monitoring 1 water level of voltage-stablizer
In safe operation state.
3) primary Ioops water filling process.
When needing to carry out water-filling to primary Ioops system, water in Surge line piping from entering in voltage-stablizer 1, in this process
Water level under spacer 22, spacer 21 is first begin to rise；When water level rises to 21 top of spacer, continue to fill
Water, water flow downwardly into 1 bottom of voltage-stablizer along spacer 21, until water level rises to the top outside spacer 21；Hereafter
Continue water-filling, until water level reaches the water level of needs, stopping water-filling.
Compared with prior art, the present invention inhibits the new structure of sloshing phenomenon in voltage-stablizer 1 to has the following advantages：
One, the separator of tubular by the space that cooling water is accommodated in voltage-stablizer 1 be divided within separator with separator it
Outer two parts.The blade diameter length ratio of known vessel is smaller, and liquid therein is just less susceptible to that sloshing phenomenon occurs, and by spacer
21, the two-part blade diameter length ratio that under spacer 22 isolates is both less than in voltage-stablizer 1 original space not being spaced, thus this two
The probability at the scene of being rocked in part is all lower, and the setting of separator effectively inhibits sloshing phenomenon.
Two, the presence of separator limits the maximum flow rate that water in container radially flows, even if in rugged environment item
Under part, a degree of sloshing phenomenon is produced in voltage-stablizer 1, flow velocity radially is restricted, and in this case, is held
Impact force suffered by wall makes the structure of voltage-stablizer 1 be hardly damaged also than relatively limited.
Three, spacer 21 is tied with the shape that the entirety that under spacer 22 forms is that upper end is big and lower end is small, this entirety
Structure plays the role of " suppressing " to the cooling water of bottom in voltage-stablizer 1, so that 1 bottom of voltage-stablizer is more difficult to sloshing phenomenon occur, really
Even if protecting in the case that exceedingly odious, the heating rod 14 positioned at 1 bottom of voltage-stablizer is all not in exposed situation, prevents from heating
Stick 14 is burnt out.
Four, by inhibiting sloshing phenomenon, it is ensured that the water level measuring point in voltage-stablizer 1 is unaffected, is surveyed to improve water level
The precision of amount.
Five, the present invention inhibits the new structure setting of sloshing phenomenon in 1 bottom of voltage-stablizer, will not be to 1 top of voltage-stablizer
Spray system impacts, and will not influence the heat exchange between shower water and steam.
The present invention inhibits the new structural maintenance of sloshing phenomenon in voltage-stablizer with reference to the attended operation of common voltage-stablizer, this
Also need to be detected upper and lower separator outside, such as burn into weld integrality.
Above disclosed is only the preferred embodiments of the present invention, effect be it is convenient it will be understood by those skilled in the art that
And implement according to this, of course, the scope of rights of the present invention cannot be limited by this, therefore according to made by scope of the present invention patent
Equivalent variations still fall within the range that the present invention is covered.
Claims (8)
1. a kind of new structure inhibiting sloshing phenomenon in voltage-stablizer, it is characterised in that：Include inside the voltage-stablizer
Spacer and under spacer, the spacer are in the tubular extended along the short transverse of the voltage-stablizer under spacer
The voltage-stablizer bottom is fixed in the lower end of structure, the under spacer, and the spacer is fixed in the under spacer
Under spacer described in Fang Bingyu is connected to, and the radial dimension of the spacer is more than the radial dimension of the under spacer, described
The upper end of spacer is opening-like.
2. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as described in claim 1, it is characterised in that：The spacer
Top less than the normal work water level in the voltage-stablizer.
3. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as described in claim 1, it is characterised in that：Further include in hollow
The radial dimension of the transition separator of structure, transition separator upper end is identical as the radial dimension of the spacer, institute
The radial dimension for stating transition separator lower end is identical as the radial dimension of the under spacer, and the lower end of the transition separator is solid
Due to the upper end of the under spacer, the upper end of the transition separator is fixed in the lower end of the spacer.
4. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as described in claim 1, it is characterised in that：In the voltage-stablizer
Several heating rods positioned at bottom are fixed with, several heating rods are arranged into several circles, and the top of the under spacer is high
In the top of the heating rod, the radial dimension of the spacer is more than the circle that the outermost heating rod is surrounded.
5. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as described in claim 1, it is characterised in that：The spacer
It is cylinder-like structure under spacer, the diameter of the spacer is more than the diameter of the under spacer.
6. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as claimed in claim 5, it is characterised in that：The spacer
It is in concentric setting with the voltage-stablizer under spacer.
7. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as described in claim 1, it is characterised in that：The voltage-stablizer
Bottom is provided with Surge line piping and takes over, and the under spacer is taken over the Surge line piping and is connected to.
8. inhibiting the new structure of sloshing phenomenon in voltage-stablizer as claimed in claim 7, it is characterised in that：The under spacer
For cylinder-like structure, and the diameter of the under spacer is equal to the diameter that the Surge line piping is taken over.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611085151.7A CN106782680B (en) | 2016-11-29 | 2016-11-29 | Inhibit the new structure of sloshing phenomenon in voltage-stablizer |
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| CN201611085151.7A CN106782680B (en) | 2016-11-29 | 2016-11-29 | Inhibit the new structure of sloshing phenomenon in voltage-stablizer |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109559834A (en) * | 2017-09-26 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Stable-pressure device and stable-pressure device group for nuclear reactor |
| CN107895599A (en) * | 2017-10-12 | 2018-04-10 | 中广核研究院有限公司 | A kind of voltage-stablizer water level measurement method and voltage-stablizer |
| CN108346476B (en) * | 2018-03-30 | 2024-03-22 | 中广核研究院有限公司 | Reactor and split-tank voltage stabilizer |
| CN109524136B (en) * | 2018-11-22 | 2022-05-20 | 西南石油大学 | Device and method for testing high-energy tube fracture whipping behavior |
| CN110706831A (en) * | 2019-11-14 | 2020-01-17 | 中核核电运行管理有限公司 | Bottom heat preservation and insulation device and method for primary circuit voltage stabilizer of nuclear power plant |
| CN113436768B (en) * | 2021-06-23 | 2022-05-20 | 中国核动力研究设计院 | Method for determining water level setting value of nuclear power plant voltage stabilizer |
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| CN206619397U (en) * | 2016-11-29 | 2017-11-07 | 中广核研究院有限公司 | Suppress the new structure of sloshing phenomenon in voltage-stablizer |
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| JP2013164340A (en) * | 2012-02-10 | 2013-08-22 | Hitachi-Ge Nuclear Energy Ltd | Jet pump |
| CN105059777A (en) * | 2015-08-11 | 2015-11-18 | 中船圣汇装备有限公司 | Swash plate structure suitable for movable type low-temperature liquid storage tank device |
| CN106024074A (en) * | 2016-05-11 | 2016-10-12 | 中广核研究院有限公司 | Nuclear power plant voltage stabilizer for inhibiting liquid level sloshing |
| CN105957565B (en) * | 2016-06-23 | 2018-05-29 | 中广核研究院有限公司 | Constrain pond and the containment with the constrain pond |
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| CN206619397U (en) * | 2016-11-29 | 2017-11-07 | 中广核研究院有限公司 | Suppress the new structure of sloshing phenomenon in voltage-stablizer |
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