CN102339652B - Method and device for positioning fuel rods in fuel assembly or fuel rod storage container - Google Patents
Method and device for positioning fuel rods in fuel assembly or fuel rod storage container Download PDFInfo
- Publication number
- CN102339652B CN102339652B CN2011103099227A CN201110309922A CN102339652B CN 102339652 B CN102339652 B CN 102339652B CN 2011103099227 A CN2011103099227 A CN 2011103099227A CN 201110309922 A CN201110309922 A CN 201110309922A CN 102339652 B CN102339652 B CN 102339652B
- Authority
- CN
- China
- Prior art keywords
- fuel rod
- lattice cell
- fuel
- lattice
- symmetrically distributed
- 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.)
- Active
Links
Images
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
- Fuel Cell (AREA)
Abstract
The invention provides a method and a device for positioning fuel rods in a fuel assembly or a fuel rod storage container. The method comprises the following steps of: arranging a positioning plate above the fuel assembly or the fuel rod storage container, wherein the positioning plate is provided with q positioning circular holes; and rotating the positioning plate anticlockwise or clockwise for90 degrees, 180 degrees and 270 degrees around an origin, and installing the positioning plate for four times, so that all lattice cells for holding the fuel rods can be positioned, wherein the lattice cells are only positioned once. The device is the positioning plate arranged above the fuel assembly or the fuel rod storage container, the positioning plate is provided with q positioning circular holes, the diameter of each positioning circular hole is 1.5 to 2.5 times that of the cross section of the fuel rod, and the center distance between the adjacent positioning circular holes is 2 times that of the adjacent lattice cells. Because the positioning plate is provided with the positioning holes, the purposes of accurately positioning the fuel rods, facilitating the operation and reducing the operation error rate are fulfilled by calculating the distribution of the positioning holes.
Description
Technical field
The present invention relates to localization method and the device of fuel rod in fuel assembly or the fuel rod hold-up vessel, be specifically related to a kind of with fuel rod from fuel assembly or fuel rod hold-up vessel that symmetrical lattice cell distributes, screening and pinpoint method and device.
Background technology
PWR fuel assembly framework some grid spacers that distribute along its length, every layer of screen work is divided into some lattice cells by the band of square crossing, and fuel rod is inserted in these lattice cells.The fuel assembly framework also comprises conduit, and these conduits replace fuel rod to be inserted in some lattice cell of grid spacer, guarantee that grid spacer is fixed on along on the position of fuel assembly guide tube length distribution.These fuel rods and conduit closely spaced array have been formed fuel assembly jointly with grid spacer and upper and lower base.
When fuel rod being operated (for example carrying out the fuel assembly repair), need to use the container of storing fuel rod, in order to store and the fixed fuel rod, the lattice cell structure is adopted in the design of container equally, and fuel rod is packed into and is arranged in closely in these lattice cells behind the container.
In the storage of fuel assembly installation, dismounting, inspection, reparation and fuel rod, transportation, all might carry out extracting and the Plug Action of fuel rod, but because fuel rod termination diameter is less, dense arrangement, and need carry out remote-controlled operation under water to the operation of irradiated fuel assembly fuel rod, so very big to the accurate positioning difficulty of fuel rod.
Fuel assembly lattice cell or fuel rod hold-up vessel lattice cell all have following characteristics: the lattice cell that (1) places fuel rod is square, and the length of side approximates (being slightly larger than) fuel rod diameter of section; (2) lattice cell is closely arranged; (3) lattice cell that be used for to place fuel rod distributions that be centrosymmetric, and around the every half-twist of symcenter, the lattice cell distribution all overlaps with self.
Summary of the invention
The object of the present invention is to provide a kind of with fuel rod from fuel assembly or fuel rod hold-up vessel that symmetrical lattice cell distributes, screening and pinpoint a kind of method and device.
A kind of localization method for fuel assembly or fuel rod hold-up vessel fuel rod of the present invention, m fuel rod in its described fuel assembly or m fuel rod in the fuel rod hold-up vessel are positioned over respectively in the lattice cell that a * a is symmetrically distributed, a, m are integer, and m is less than or equal to a * a; Lattice cell is closely arranged, and each lattice cell is square; M fuel rod placement location in the lattice cell that a * a is symmetrically distributed satisfies around the every half-twist of symcenter, m fuel rod in the lattice cell of a * a symmetrical distribution the position with overlap before;
This method comprises the steps:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top, have q positioning round orifice on this location-plate, the diameter of each positioning round orifice is 1.5～2.5 times of fuel rod cross-sectional diameters, and adjacent positioned circular hole centre distance is 2 times of adjacent lattice cell centre distance;
(I) when a is odd number, a=2n+1, n are natural number.In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝0，2，4，……，2n；y＝2，4，6，……，2n}；
N
2＝{(x，y)|x＝1，3，5，……，2n+1；y＝2，4，6，……，2n}；
N
3＝{(x，y)|x＝1，3，5，……，2n+1；y＝1，3，5，……，2n+1}；
N
4＝{(x，y)|x＝0，2，4，……，2n；y＝1，3，5，……，2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
(II) when a be even number, a=2n, n are natural number.In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝3，7，11，……，4n-1；y＝3，7，11，……，4n-1}
N
2＝{(x，y)|x＝3，7，11，……，4n-1；y＝1，5，9，……，4n+1}
N
3＝{(x，y)|x＝1，5，9，……，4n+1；y＝1，5，9，……，4n+1}
N
4＝{(x，y)|x＝1，5，9，……，4n+1；y＝3，7，11，……，4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
(2) with the described location-plate of step (1) around initial point counterclockwise or turn clockwise 90 °, 180 °, 270 °, carry out the installation of No. four location-plates altogether, can position all lattice cells that is placed with fuel rod, and these lattice cells are positioned with and for once.
Aforesaid a kind of localization method for fuel assembly or fuel rod hold-up vessel fuel rod, it adopts compact arranged 15 * 15 lattice cell that is symmetrically distributed, totally 225 lattice cells; 204 fuel rods are placed in 204 fuel rod lattice cells one, and 21 conduits are placed in all the other 21 conduit lattice cells; Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one positions, 204 fuel rod lattice cell one positions with overlap before; The length of described location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, and offer 51 positioning round orifice one on this location-plate.
Aforesaid a kind of localization method for fuel assembly or fuel rod hold-up vessel fuel rod, it adopts compact arranged 14 * 14 lattice cell that is symmetrically distributed, totally 196 lattice cells; 132 fuel rods are placed in 132 fuel rod lattice cells two, and all the other lattice cells are white space; Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell two positions, 132 fuel rod lattice cell two positions with overlap before; The length of described location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, and offer 33 positioning round orifice two on this location-plate.
A kind of locating device for fuel assembly or fuel rod hold-up vessel fuel rod of the present invention, m fuel rod in m in a described fuel assembly fuel rod or the fuel rod hold-up vessel is positioned over respectively in the lattice cell of a * a symmetrical distribution, a, m are integer, and m is less than or equal to a * a; Lattice cell is closely arranged, and each lattice cell is square; M fuel rod placement location in the lattice cell that a * a is symmetrically distributed satisfies around the every half-twist of symcenter, m fuel rod in the lattice cell of a * a symmetrical distribution the position with overlap before;
This device is a location-plate that is installed in fuel assembly or fuel rod hold-up vessel top, have q positioning round orifice at location-plate, the diameter of each positioning round orifice is 1.5～2.5 times of fuel rod cross-sectional diameter, and the centre distance of adjacent positioned circular hole is 2 times of adjacent lattice cell centre distance;
(I) when a is odd number, a=2n+1, n are natural number.In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with the centre distance of adjacent lattice cell, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝0，2，4，……，2n；y＝2，4，6，……，2n}；
N
2＝{(x，y)|x＝1，3，5，……，2n+1；y＝2，4，6，……，2n}；
N
3＝{(x，y)|x＝1，3，5，……，2n+1；y＝1，3，5，……，2n+1}；
N
4＝{(x，y)|x＝0，2，4，……，2n；y＝1，3，5，……，2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
(II) when a be even number, a=2n, n are natural number.In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of the centre distance of adjacent lattice cell, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝3，7，11，……，4n-1；y＝3，7，11，……，4n-1}
N
2＝{(x，y)|x＝3，7，11，……，4n-1；y＝1，5，9，……，4n+1}
N
3＝{(x，y)|x＝1，5，9，……，4n+1；y＝1，5，9，……，4n+1}
N
4＝{(x，y)|x＝1，5，9，……，4n+1；y＝3，7，11，……，4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}
Aforesaid a kind of locating device for fuel assembly or fuel rod hold-up vessel fuel rod, it adopts compact arranged 15 * 15 lattice cell that is symmetrically distributed, totally 225 lattice cells; 204 fuel rods are placed in 204 fuel rod lattice cells one, and 21 conduits are placed in all the other 21 conduit lattice cells; Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one positions, 204 fuel rod lattice cell one positions with overlap before; The length of described location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, and offer 51 positioning round orifice one on this location-plate.
Aforesaid a kind of locating device for fuel assembly or fuel rod hold-up vessel fuel rod, it adopts compact arranged 14 * 14 lattice cell that is symmetrically distributed, totally 196 lattice cells; 132 fuel rods are placed in 132 fuel rod lattice cells two, and all the other lattice cells are white space; Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell two positions, 132 fuel rod lattice cell two positions with overlap before; The length of described location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, and offer 33 positioning round orifice two on this location-plate.
Effect of the present invention is:
Localization method of the present invention and device, be location-plate with a kind of device that can be fixed on fuel assembly or fuel rod hold-up vessel top, Design Orientation hole on location-plate, by the compute location pore size distribution, reach fuel rod accurately location, handled easily and reduce the purpose of error in operation rate.
The present invention has the following advantages:
(1) is applicable to that all lattice cells of placing fuel rod are fuel assembly or the fuel rod hold-up vessel of symmetrical distribution (around the every half-twist of symcenter, lattice cell distributes and overlaps with self).
(2) pilot hole centre distance is 2 times of adjacent lattice cell centre distance, by increasing the diameter of pilot hole, reduces location, operation easier to fuel rod, reduces error rate simultaneously.
(3) after each the installation, can accurately locate 1/4 fuel rod lattice cell.0 °, 90 °, 180 °, 270 ° of rotation location-plates carry out four times altogether and install.In four installation processes, pilot hole positions different lattice cells at every turn, finally covers all fuel rod lattice cells, and each fuel rod location number of times has and for once.
Description of drawings
Fig. 1 is certain Power Plant Fuel assembly schematic cross-section;
Fig. 2 is pilot hole distribution schematic diagram on the location-plate of fuel assembly shown in Figure 1 design;
Fig. 3 is certain Power Plant Fuel rod hold-up vessel;
Fig. 4 is pilot hole distribution schematic diagram on the location-plate of fuel rod hold-up vessel shown in Figure 3 design;
Among the figure: 1. the fuel rod lattice cell one; 2. conduit lattice cell; 3. positioning round orifice one; 4. the fuel rod lattice cell two; 5. white space; 6. positioning round orifice two.
Embodiment
Below in conjunction with the drawings and specific embodiments localization method and the device for fuel assembly or fuel rod hold-up vessel fuel rod of the present invention is further described.
Embodiment 1
As shown in Figure 1, certain Power Plant Fuel assembly is compact arranged 15 * 15 lattice cells that are symmetrically distributed, totally 225 lattice cells, and lattice cell is square, and the lattice cell length of side approximates (being slightly larger than) fuel rod diameter of section.
204 fuel rods are placed in 204 fuel rod lattice cells 1, and 21 conduits are placed in all the other 21 conduit lattice cells 2.Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one 1 positions, 204 fuel rod lattice cell one 1 positions with overlap before.
Adopt method of the present invention and device that the fuel rod lattice cell 1 of 204 fuel assemblies is positioned, specific as follows:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top.The length of this location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, offer 51 positioning round orifice 1 on this location-plate, the diameter of each positioning round orifice 1 is 2 times of fuel rod cross-sectional diameters, adjacent positioned circular hole centre distance is 2 times of adjacent lattice cell centre distance, as shown in Figure 2.
In 15 * 15 lattice cells that are symmetrically distributed, being initial point with the symcenter, is unit length with adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M (known collection) that 204 fuel rods are placed on 204 fuel rod lattice cell one 1 central points; The set of setting the central point of 51 positioning round orifice 1 is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝0，2，4，……，2n；y＝2，4，6，……，2n}；
N
2＝{(x，y)|x＝1，3，5，……，2n+1；y＝2，4，6，……，2n}；
N
3＝{(x，y)|x＝1，3，5，……，2n+1；y＝1，3，5，……，2n+1}；
N
4＝{(x，y)|x＝0，2，4，……，2n；y＝1，3，5，……，2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1；}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
(2) the described location-plate of step (1) is rotated counterclockwise 90 °, 180 °, 270 ° around initial point, carries out the installation of No. four location-plates altogether, can position all fuel rod lattice cells 1, and each fuel rod lattice cell 1 is positioned with and for once.
Consider the layout needs of other location on the location-plate or locking device, can move to other quadrants with the position of part positioning round orifice by rotate around symcenter, make the space layout more reasonable.
Embodiment 2
As shown in Figure 3, certain Power Plant Fuel rod hold-up vessel is compact arranged 14 * 14 lattice cells that are symmetrically distributed, totally 196 lattice cells, and lattice cell is square, and the lattice cell length of side approximates (being slightly larger than) fuel rod diameter of section.
132 fuel rods are placed in 132 fuel rod lattice cells 24, and all the other lattice cells are white space 5.Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell 24 positions, 132 fuel rod lattice cell 24 positions with overlap before.
Adopt method of the present invention and device that the fuel rod lattice cell 24 of 132 fuel rod hold-up vessels is positioned, specific as follows:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top.The length of this location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, offer 33 positioning round orifice 26 on this location-plate, the diameter of each positioning round orifice 26 is 2.5 times of fuel rod cross-sectional diameter, the centre distance of adjacent positioned circular hole is 2 times of adjacent lattice cell centre distance, as shown in Figure 4.
In 14 * 14 lattice cells that are symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M (known collection) that 132 fuel rods are placed on 132 fuel rod lattice cell one 1 central points; The set of setting the central point of 33 positioning round orifice 26 is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝3，7，11，……，4n-1；y＝3，7，11，……，4n-1}
N
2＝{(x，y)|x＝3，7，11，……，4n-1；y＝1，5，9，……，4n+1}
N
3＝{(x，y)|x＝1，5，9，……，4n+1；y＝1，5，9，……，4n+1}
N
4＝{(x，y)|x＝1，5，9，……，4n+1；y＝3，7，11，……，4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
(2) the described location-plate of step (1) is turned clockwise 90 °, 180 °, 270 ° around initial point, carry out the installation of No. four location-plates altogether, can position all fuel rod lattice cells 24, and each fuel rod lattice cell 24 is positioned with and for once.
Consider the layout needs of other location on the location-plate or locking device, can move to other quadrants with the position of part positioning round orifice by rotate around symcenter, make the space layout more reasonable.
Embodiment 3
As shown in Figure 1, certain Power Plant Fuel assembly is compact arranged 15 * 15 lattice cells that are symmetrically distributed, totally 225 lattice cells, and lattice cell is square, and the lattice cell length of side approximates (being slightly larger than) fuel rod diameter of section.
204 fuel rods are placed in 204 fuel rod lattice cells 1, and 21 conduits are placed in all the other 21 conduit lattice cells 2.Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one 1 positions, 204 fuel rod lattice cell one 1 positions with overlap before.
As shown in Figure 2, locating device of the present invention is a location-plate that is installed in fuel assembly or fuel rod hold-up vessel top, the length of this location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, offer 51 positioning round orifice 1 on this location-plate, the diameter of each positioning round orifice 1 is 2.5 times of fuel rod cross-sectional diameter, and the centre distance of adjacent positioned circular hole is 2 times of adjacent lattice cell centre distance.
In 15 * 15 lattice cells that are symmetrically distributed, being initial point with the symcenter, is unit length with adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M (known collection) that 204 fuel rods are placed on 204 fuel rod lattice cell one 1 central points; The set of setting the central point of 51 positioning round orifice 1 is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝0，2，4，……，2n；y＝2，4，6，……，2n}；
N
2＝{(x，y)|x＝1，3，5，……，2n+1；y＝2，4，6，……，2n}；
N
3＝{(x，y)|x＝1，3，5，……，2n+1；y＝1，3，5，……，2n+1}；
N
4＝{(x，y)|x＝0，2，4，……，2n；y＝1，3，5，……，2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1；}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}。
Adopt above-mentioned locating device that the fuel rod lattice cell 1 of 204 fuel assemblies is positioned, specific as follows:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top.
(2) the described location-plate of step (1) is rotated counterclockwise 90 °, 180 °, 270 ° around initial point, carries out the installation of No. four location-plates altogether, can position all fuel rod lattice cells 1, and each fuel rod lattice cell 1 is positioned with and for once.
As shown in Figure 3, certain Power Plant Fuel rod hold-up vessel is compact arranged 14 * 14 lattice cells that are symmetrically distributed, totally 196 lattice cells, and lattice cell is square, and the lattice cell length of side approximates (being slightly larger than) fuel rod diameter of section.
132 fuel rods are placed in 132 fuel rod lattice cells 24, and all the other lattice cells are white space 5.Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell 24 positions, 132 fuel rod lattice cell 24 positions with overlap before.
As shown in Figure 4, locating device of the present invention is a location-plate that is installed in fuel assembly or fuel rod hold-up vessel top, the length of this location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, offer 33 positioning round orifice 26 on this location-plate, the diameter of each positioning round orifice 26 is 1.5 times of fuel rod cross-sectional diameter, and the centre distance of adjacent positioned circular hole is 2 times of adjacent lattice cell centre distance.
In 14 * 14 lattice cells that are symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M (known collection) that 132 fuel rods are placed on 132 fuel rod lattice cell one 1 central points; The set of setting the central point of 33 positioning round orifice 26 is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1＝{(x，y)|x＝3，7，11，……，4n-1；y＝3，7，11，……，4n-1}
N
2＝{(x，y)|x＝3，7，11，……，4n-1；y＝1，5，9，……，4n+1}
N
3＝{(x，y)|x＝1，5，9，……，4n+1；y＝1，5，9，……，4n+1}
N
4＝{(x，y)|x＝1，5，9，……，4n+1；y＝3，7，11，……，4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1＝N
1∩M；P
2＝N
2∩M；P
3＝N
3∩M；P
4＝N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q＝{(x，y)|(x，y)∈P
1}∪{(-y，x)|(x，y)∈P
2}∪{(-x，-y)|(x，y)∈P
3}∪{(y，-x)|(x，y)∈P
4}；
Adopt above-mentioned locating device that the fuel rod lattice cell 24 of 132 fuel rod hold-up vessels is positioned, specific as follows:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top.
(2) the described location-plate of step (1) is turned clockwise 90 °, 180 °, 270 ° around initial point, carry out the installation of No. four location-plates altogether, can position all fuel rod lattice cells 24, and each fuel rod lattice cell 24 is positioned with and for once.
Claims (6)
1. localization method that is used for fuel assembly or fuel rod hold-up vessel fuel rod,
M fuel rod in m in a described fuel assembly fuel rod or the fuel rod hold-up vessel is positioned over respectively in the lattice cell of a * a symmetrical distribution, and a, m are integer, and m is less than or equal to a * a; Lattice cell is closely arranged, and each lattice cell is square;
M fuel rod placement location in the lattice cell that a * a is symmetrically distributed satisfies around the every half-twist of symcenter, m fuel rod in the lattice cell of a * a symmetrical distribution the position with overlap before;
It is characterized in that: this method comprises the steps:
(1) location-plate is installed in fuel assembly or fuel rod hold-up vessel top, has q positioning round orifice on this location-plate; The diameter of each positioning round orifice is 1.5～2.5 times of fuel rod cross-sectional diameter, and adjacent positioned circular hole centre distance is 2 times of adjacent lattice cell centre distance;
(I) when a is odd number, a=2n+1, n are natural number; In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1={(x,y)|x=0,2,4,……,2n；y=2,4,6,……,2n}；
N
2={(x,y)|x=1,3,5,……,2n+1；y=2,4,6,……,2n}；
N
3={(x,y)|x=1,3,5,……,2n+1；y=1,3,5,……,2n+1}；
N
4={(x,y)|x=0,2,4,……,2n；y=1,3,5,……,2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1=N
1∩M；P
2=N
2∩M；P
3=N
3∩M；P
4=N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q={(x,y)|（x,y）∈P
1}∪{(-y,x)|（x,y）∈P
2}∪{(-x,-y)|（x,y）∈P
3}∪{(y,-x)|（x,y）∈P
4}；
(II) when a be even number, a=2n, n are natural number; In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of adjacent lattice cell centre distance, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1={(x,y)|x=3，7，11,……,4n-1；y=3，7，11,……,4n-1}
N
2={(x,y)|x=3，7，11,……,4n-1；y=1，5，9,……,4n+1}
N
3={(x,y)|x=1，5，9,……,4n+1；y=1，5，9,……,4n+1}
N
4={(x,y)|x=1，5，9,……,4n+1；y=3，7，11,……,4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1=N
1∩M；P
2=N
2∩M；P
3=N
3∩M；P
4=N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q={(x,y)|（x,y）∈P
1}∪{(-y,x)|（x,y）∈P
2}∪{(-x,-y)|（x,y）∈P
3}∪{(y,-x)|（x,y）∈P
4}；
(2) with the described location-plate of step (1) around initial point counterclockwise or turn clockwise 90 °, 180 °, 270 °, carry out the installation of No. four location-plates altogether, can position all lattice cells that is placed with fuel rod, and these lattice cells are positioned with and for once.
2. a kind of localization method for fuel assembly or fuel rod hold-up vessel fuel rod according to claim 1 is characterized in that: adopt compact arranged 15 * 15 lattice cell that is symmetrically distributed, 225 lattice cells totally; 204 fuel rods are placed in 204 fuel rod lattice cells one (1), and 21 conduits are placed in all the other 21 conduit lattice cells (2); Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one (1) positions, 204 fuel rod lattice cell one (1) positions with overlap before; The length of described location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, and offer 51 positioning round orifice one (3) on this location-plate.
3. a kind of localization method for fuel assembly or fuel rod hold-up vessel fuel rod according to claim 1 is characterized in that: adopt compact arranged 14 * 14 lattice cell that is symmetrically distributed, 196 lattice cells totally; 132 fuel rods are placed in 132 fuel rod lattice cells two (4), and all the other lattice cells are white space (5); Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell two (4) positions, 132 fuel rod lattice cell two (4) positions with overlap before; The length of described location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, and offer 33 positioning round orifice two (6) on this location-plate.
4. locating device that is used for fuel assembly or fuel rod hold-up vessel fuel rod,
M fuel rod in m in a described fuel assembly fuel rod or the fuel rod hold-up vessel is positioned over respectively in the lattice cell of a * a symmetrical distribution, and a, m are integer, and m is less than or equal to a * a; Lattice cell is closely arranged, and each lattice cell is square;
M fuel rod placement location in the lattice cell that a * a is symmetrically distributed satisfies around the every half-twist of symcenter, m fuel rod in the lattice cell of a * a symmetrical distribution the position with overlap before;
It is characterized in that: this device is a location-plate that is installed in fuel assembly or fuel rod hold-up vessel top, have q positioning round orifice at location-plate, the diameter of each positioning round orifice is 1.5～2.5 times of fuel rod cross-sectional diameters, and adjacent positioned circular hole centre distance is 2 times of adjacent lattice cell centre distance;
(I) when a is odd number, a=2n+1, n are natural number; In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with the centre distance of adjacent lattice cell, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile and Y-axis positive axis, set up four set N
1, N
2, N
3, N
4, wherein:
N
1={(x,y)|x=0,2,4,……,2n；y=2,4,6,……,2n}；
N
2={(x,y)|x=1,3,5,……,2n+1；y=2,4,6,……,2n}；
N
3={(x,y)|x=1,3,5,……,2n+1；y=1,3,5,……,2n+1}；
N
4={(x,y)|x=0,2,4,……,2n；y=1,3,5,……,2n+1}；
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1=N
1∩M；P
2=N
2∩M；P
3=N
3∩M；P
4=N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q={(x,y)|（x,y）∈P
1}∪{(-y,x)|（x,y）∈P
2}∪{(-x,-y)|（x,y）∈P
3}∪{(y,-x)|
（x,y）∈P
4}；
(II) when a be even number, a=2n, n are natural number; In the lattice cell that a * a is symmetrically distributed, being initial point with the symcenter, is unit length with 1/2 of the centre distance of adjacent lattice cell, sets up plane coordinate system XOY, in this XOY coordinate system, set up the set M that m fuel rod is placed on the fuel rod central point in the lattice cell that a * a is symmetrically distributed; The set of setting the central point of q positioning round orifice is Q;
In first quartile, set up four set N
1, N
2, N
3, N
4, wherein:
N
1={(x,y)|x=3，7，11,……,4n-1；y=3，7，11,……,4n-1}
N
2={(x,y)|x=3，7，11,……,4n-1；y=1，5，9,……,4n+1}
N
3={(x,y)|x=1，5，9,……,4n+1；y=1，5，9,……,4n+1}
N
4={(x,y)|x=1，5，9,……,4n+1；y=3，7，11,……,4n-1}
Set up P
1, P
2, P
3, P
4Four set, wherein:
P
1=N
1∩M；P
2=N
2∩M；P
3=N
3∩M；P
4=N
4∩M；
The set Q that tries to achieve q pilot hole central point distribution is
Q={(x,y)|（x,y）∈P
1}∪{(-y,x)|（x,y）∈P
2}∪{(-x,-y)|（x,y）∈P
3}∪{(y,-x)|（x,y）∈P
4}。
5. a kind of locating device for fuel assembly or fuel rod hold-up vessel fuel rod according to claim 4 is characterized in that: adopt compact arranged 15 * 15 lattice cell that is symmetrically distributed, 225 lattice cells totally; 204 fuel rods are placed in 204 fuel rod lattice cells one (1), and 21 conduits are placed in all the other 21 conduit lattice cells (2); Satisfy around the every half-twist of symcenter 204 fuel rod lattice cell one (1) positions, 204 fuel rod lattice cell one (1) positions with overlap before; The length of described location-plate, width equate with 15 * 15 lattice cell total length, the width that are symmetrically distributed, and offer 51 positioning round orifice one (3) on this location-plate.
6. a kind of locating device for fuel assembly or fuel rod hold-up vessel fuel rod according to claim 4 is characterized in that: adopt compact arranged 14 * 14 lattice cell that is symmetrically distributed, 196 lattice cells totally; 132 fuel rods are placed in 132 fuel rod lattice cells two (4), and all the other lattice cells are white space (5); Satisfy around the every half-twist of symcenter 132 fuel rod lattice cell two (4) positions, 132 fuel rod lattice cell two (4) positions with overlap before; The length of described location-plate, width equate with 14 * 14 lattice cell total length, the width that are symmetrically distributed, and offer 33 positioning round orifice two (6) on this location-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103099227A CN102339652B (en) | 2011-10-13 | 2011-10-13 | Method and device for positioning fuel rods in fuel assembly or fuel rod storage container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103099227A CN102339652B (en) | 2011-10-13 | 2011-10-13 | Method and device for positioning fuel rods in fuel assembly or fuel rod storage container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102339652A CN102339652A (en) | 2012-02-01 |
| CN102339652B true CN102339652B (en) | 2013-07-17 |
Family
ID=45515325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103099227A Active CN102339652B (en) | 2011-10-13 | 2011-10-13 | Method and device for positioning fuel rods in fuel assembly or fuel rod storage container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102339652B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705785A (en) * | 2016-11-22 | 2017-05-24 | 中核北方核燃料元件有限公司 | CNC horizontal projector end plug type component detection fixing device |
| CN109979630A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of fuel rod plug positioning device and method for fuel assembly reparation |
| CN117058220B (en) * | 2023-10-11 | 2024-01-26 | 天津施格自动化科技有限公司 | Fitting algorithm for measuring diameter and central point of metal rod by using distance sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751528A1 (en) * | 1995-06-29 | 1997-01-02 | Societe Franco-Belge De Fabrication De Combustibles Fbfc | Method and installation for welding a spacer grid of a nuclear reactor fuel assembly and apparatus for welding from the grid interior |
| CN201859662U (en) * | 2010-10-14 | 2011-06-08 | 中广核工程有限公司 | Spent fuel storage framework for pressurized-water reactor nuclear power station |
| CN202307166U (en) * | 2011-10-13 | 2012-07-04 | 秦山核电有限公司 | Positioning device for fuel rods in fuel assembly or fuel rod storing container |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2848328B1 (en) * | 2002-12-10 | 2005-08-19 | Framatome Anp | METHOD AND APPARATUS FOR LOADING A FUEL ASSEMBLY INTO THE HEART OF A NUCLEAR REACTOR |
| US9082519B2 (en) * | 2008-12-17 | 2015-07-14 | Westinghouse Electric Company Llc | Upper internals arrangement for a pressurized water reactor |
-
2011
- 2011-10-13 CN CN2011103099227A patent/CN102339652B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751528A1 (en) * | 1995-06-29 | 1997-01-02 | Societe Franco-Belge De Fabrication De Combustibles Fbfc | Method and installation for welding a spacer grid of a nuclear reactor fuel assembly and apparatus for welding from the grid interior |
| CN201859662U (en) * | 2010-10-14 | 2011-06-08 | 中广核工程有限公司 | Spent fuel storage framework for pressurized-water reactor nuclear power station |
| CN202307166U (en) * | 2011-10-13 | 2012-07-04 | 秦山核电有限公司 | Positioning device for fuel rods in fuel assembly or fuel rod storing container |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102339652A (en) | 2012-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102339652B (en) | Method and device for positioning fuel rods in fuel assembly or fuel rod storage container | |
| CN103474099B (en) | high thermal neutron fluence rate reactor core | |
| CN103712059A (en) | Positioning method for liquefied natural gas storage tank leakage area | |
| CN103517537B (en) | Two stripping film individual pen line outbound courses in compact cyclotron | |
| CN103926115A (en) | Automatic gas sample collection station for monitoring greenhouse gas emission flux | |
| CN202307166U (en) | Positioning device for fuel rods in fuel assembly or fuel rod storing container | |
| CN103474101A (en) | Nuclear reactor core arrangement of nuclear power station | |
| CN110441214B (en) | Coal sample crack penetration testing device and testing method thereof | |
| CN203301114U (en) | 110kV lightning arrester universal mounting base | |
| CN102680382A (en) | Under-deposit corrosion experiment bracket and method for experimenting by using same | |
| CN201927363U (en) | Top tube seat for low pressure drop fuel assembly | |
| CN211362069U (en) | Nuclear reactor is surveyed and is taken over seal assembly pre-installation adjusting device | |
| CN203452985U (en) | Anchor bolt type foundation of wind generating set | |
| CN202024759U (en) | Monitoring system for river-mouth seat observation platform put-in attitude | |
| CN102191872B (en) | Tower footing and tower body structure for space truss structure with constant strength and method for forming tower | |
| CN105564809A (en) | Composite pipeline inside supporting assembly | |
| CN205063495U (en) | Sea cable fixed bolster | |
| CN203903165U (en) | Transferring and storing device for electrostatic plate framework of transformer | |
| CN211012911U (en) | Subway safety assessment and early warning device | |
| CN102913029A (en) | Four-loop cable tower | |
| CN208923772U (en) | A kind of substation GIS pipe bus sliding supporting structure | |
| CN218957275U (en) | A simulation installation device for piling outer detector | |
| CN202650567U (en) | Pressurizer surge line for nuclear power plant | |
| CN202307174U (en) | Detachable movable fuel basket | |
| CN201616441U (en) | Solar panel support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |