CN112002442B - Cross-wing control rod - Google Patents
Cross-wing control rod Download PDFInfo
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- CN112002442B CN112002442B CN202010761602.4A CN202010761602A CN112002442B CN 112002442 B CN112002442 B CN 112002442B CN 202010761602 A CN202010761602 A CN 202010761602A CN 112002442 B CN112002442 B CN 112002442B
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- cross
- wing
- shaped
- control rod
- absorption
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- 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
- G21C7/10—Construction of control elements
- G21C7/113—Control elements made of flat elements; Control elements having cruciform cross-section
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
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- 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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- General Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vibration Dampers (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention relates to the technical field of nuclear reactors, in particular to a cross-wing-shaped control rod which comprises a cross-wing assembly, wherein the cross-wing assembly comprises a cross-shaped support column and four absorption plates, the cross-shaped support column is provided with four ribs extending along the axial direction, the four ribs are distributed in a cross shape, and the four absorption plates are respectively fixed on the four ribs. The cross-shaped support column and the absorption plate form a structural form with a central shaft, so that the hoisting strength of the cross-shaped wing-shaped control rod can be better provided, the requirements of overall dimension, mechanical strength and rod drop impact are met, the assembly structure of the cross-shaped wing assembly reduces the manufacturing difficulty, the processing precision is ensured, the manufacturing of parts is ensured to meet the requirement of manufacturability realization, the engineering and the productization are realized, the engineering application of the built-in water pressure driving technology of the control rod on an advanced integrated small water reactor with the thermal power of less than 50MW is met, and the selection is provided for the engineering design of complex special-shaped structures in other industrial fields.
Description
Technical Field
The invention relates to the technical field of nuclear reactors, in particular to a cross-wing control rod.
Background
At present, the hydraulic drive technology of the control rod of the nuclear reactor is a built-in control rod drive technology, a drive mechanism of the control rod drive technology is arranged in a high-temperature, high-pressure and irradiation environment in a reactor pressure container, and three hydraulic cylinders for lifting, transferring and clamping are adopted to drive the transfer and clamp two sets of pin claw mechanisms to move in sequence, so that the functions of lifting, descending and dropping the control rod are realized.
Based on the operating principle of the driving mechanism and the structural characteristics of the advanced integrated small water reactor with thermal power less than 50MW, the driving mechanism needs to be arranged above the control rods to drive the control rods to move, so that the driving mechanism and the control rods form a hoisting connection state, but the existing control rods cannot meet the hoisting requirement due to limited structure and strength.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the cross-shaped wing control rod has the advantages that the cross-shaped support column and the absorption plate form a structural form with the middle shaft, the driving mechanism can be arranged above the cross-shaped wing control rod, the cross-shaped wing control rod and the driving mechanism can be connected in a hoisting state, the hoisting strength of the cross-shaped wing control rod can be better provided, the requirements of overall dimension, mechanical strength and rod drop impact are met, the assembly structure of the cross-shaped wing assembly reduces the manufacturing difficulty, the processing precision is guaranteed, the manufacturing of parts is guaranteed to meet the requirements of technological implementation, and the engineering and the productization are realized.
The cross wing type control rod according to the embodiment of the first aspect of the invention comprises a cross wing assembly, wherein the cross wing assembly comprises a cross-shaped support column and four absorption plates, the cross-shaped support column is configured with four ribs extending along the axial direction, the four ribs are distributed in a cross shape, and the four absorption plates are respectively fixed on the four ribs.
According to one embodiment of the invention, the absorption plate comprises a cladding plate and an absorption rod, the cladding plate is configured into a U-shaped plate, and the open end of the U-shaped plate is connected with the rib; the absorption rods extend along the axial direction of the cross-shaped supporting column and are sequentially arranged on the inner side of the U-shaped plate along the direction from the opening end to the closed end of the U-shaped plate.
According to one embodiment of the invention, the absorption rod comprises a tube body, a boron carbide pellet, an upper end plug and a lower end plug, helium gas is filled in the tube body, the boron carbide pellet is arranged in the tube body, a space for thermal expansion and helium gas escape is reserved in the tube body, and two ends of the tube body are respectively plugged by the upper end plug and the lower end plug.
According to one embodiment of the invention, the cladding plate is formed with opposing indentations towards the inside thereof, which indentations extend in the axial direction of the cross-shaped support post, the indentations forming a cladding on the side near the closed end for cladding the absorption bar at the edge.
According to an embodiment of the invention, the cross wing assembly further comprises two cross wing frames, the two cross wing frames are coaxially arranged at two ends of the cross-shaped supporting column respectively, and the four wing plates of each cross wing frame are connected with the four absorbing plates in a one-to-one correspondence manner.
According to one embodiment of the invention, the cross wing frames are provided with corresponding insertion holes, two ends of the absorption rod are respectively inserted into the insertion holes on the two cross wing frames, and the cladding plate is riveted with the wing plates of the cross wing frames.
According to one embodiment of the present invention, both side surfaces of each of the wing plates are provided with protrusions.
According to one embodiment of the invention, the wing-shaped supporting column further comprises two connecting components, the two connecting components are respectively arranged corresponding to the two cross-shaped wing frames, each connecting component comprises a connecting shaft and a shaft sleeve, the cross-shaped wing frames are provided with through holes along the axial direction of the cross-shaped supporting column, two ends of the cross-shaped supporting column are respectively provided with connecting holes extending axially on the axial line of the cross-shaped supporting column, and the connecting shafts sequentially penetrate through the shaft sleeves and the through holes to enter the connecting holes.
According to one embodiment of the invention, four reinforcing ribs are arranged on the shaft sleeve, extend along the axial direction of the shaft sleeve and are distributed in the circumferential direction of the shaft sleeve in a cross shape, and the four reinforcing ribs are arranged in one-to-one correspondence with the four wing plates of the cross wing frame.
According to one embodiment of the invention, the shaft sleeve and the corresponding cross-shaped wing frame are positioned through pins, and the cross-shaped wing frame and the cross-shaped supporting column are positioned through pins.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects: according to the cross-shaped wing control rod, the central position of the cross-shaped support column is a support column main body, the four ribs axially extend and circumferentially surround the support column main body and are uniformly distributed on the outer wall of the support column main body, so that the cross section of the cross-shaped support column is cross-shaped, the four absorption plates and the four ribs are correspondingly spliced and connected one by one, a cross-shaped wing assembly is formed, and the cross-shaped wing control rod is different from a traditional cross-shaped wing control rod in that the middle of each of two plate surfaces is formed in a slotted splicing mode.
The traditional cross wing type control rod cannot meet the requirement that a driving mechanism is connected with the control rod in a hoisting mode. According to the invention, the cross-shaped support column and the absorption plate form a structural form with a central axis, the driving mechanism can be arranged above the cross-shaped wing control rod, the cross-shaped wing control rod and the driving mechanism can be in a hoisting state, the hoisting strength of the cross-shaped wing control rod can be better provided, the requirements of overall dimension, mechanical strength and rod drop impact are met, the manufacturing difficulty is reduced by the assembly type structure of the cross-shaped wing assembly, the processing precision is ensured, the manufacturing of parts meets the requirements of manufacturability realization, the engineering and the productization are realized, the engineering application of the control rod built-in water pressure driving technology on an advanced integrated small water reactor with the thermal power of less than 50MW is met, and the selection is also provided for the engineering design of complex special-shaped structures in other industrial fields.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings or will be understood by the practice of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a cross-wing control rod according to an embodiment of the present invention;
FIG. 2 is a perspective view of a cross-wing control rod according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a cross support column of a cross-wing control rod in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a right side view of a cross support column of a cross-wing control rod in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of the cladding plate of the cross-wing control rod according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 5;
FIG. 7 is a schematic structural view of the cladding plate and absorber rods of the cross-shaped airfoil control rod of the embodiment of the invention in the assembled relationship at the concave position;
FIG. 8 is a schematic structural view of the cladding plate of the cruciform airfoil control rod in connection with the cruciform airfoil control rod in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of an absorber rod of a cross-wing control rod according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of an upper spider of a cruciform airfoil control rod according to an embodiment of the present invention;
FIG. 11 is a schematic view of the configuration of the projections of the spider of the cruciform airfoil control rod according to an embodiment of the present invention;
FIG. 12 is a schematic view of the structure of the lower spider of the cruciform airfoil control rod according to an embodiment of the present invention;
FIG. 13 is an enlarged view of detail A of FIG. 1;
FIG. 14 is an enlarged view of detail B of FIG. 1;
FIG. 15 is an enlarged view of detail C of FIG. 1;
FIG. 16 is an enlarged view of detail E of FIG. 1;
FIG. 17 is an enlarged view of portion F of FIG. 1;
FIG. 18 is a schematic structural view of an upper hub of a cruciform airfoil control rod in accordance with an embodiment of the present invention;
FIG. 19 is a schematic view of the structure of the lower hub of the cruciform airfoil control rod according to an embodiment of the present invention.
Reference numerals:
1: a cross-wing assembly; 11: a cross-shaped support column; 12: an absorbent sheet; 13: a cross-shaped wing frame; 110: connecting holes; 111: a rib edge; 112: a support post body; 121: a cladding plate; 122: an absorbent rod; 130: a jack; 131: a protrusion; 132: an upper cross-shaped wing frame; 133: a lower cross-shaped wing frame; 134: a through hole; 1211: recessing; 1212: cooling water holes; 1221: a pipe body; 1222: a boron carbide pellet; 1223: an upper end plug; 1224: a lower end plug;
2: a connecting assembly; 21: a connecting shaft; 22: a shaft sleeve; 211: an upper connecting shaft; 212: a lower connecting shaft; 221: an upper shaft sleeve; 222: a lower shaft sleeve; 223: reinforcing ribs;
3: a pin; 31: positioning holes;
4: riveting; 41: and (6) riveting holes.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples, which are provided for illustrating the present invention but are not intended to limit the scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only used for convenience in describing the embodiments of the present invention and for simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
As shown in fig. 1, 2, 3 and 4, a cross-type control rod according to an embodiment of the present invention includes a cross-type control rod assembly 1, where the cross-type control rod assembly 1 includes a cross-type support column 11 and four absorber plates 12, the cross-type support column 11 is configured with four ribs 111 extending along an axial direction, the four ribs 111 are distributed in a cross-type manner, and the four absorber plates 12 are respectively fixed on the four ribs 111.
In the cross-shaped wing control rod of the embodiment of the invention, the central position of the cross-shaped support column 11 is the support column main body 112, the four ribs 111 axially extend and circumferentially surround the support column main body 112 and are uniformly distributed on the outer wall of the support column main body 112, so that the cross section of the cross-shaped support column 11 is cross-shaped, and the four absorption plates 12 are correspondingly spliced and connected with the four ribs 111 one by one, so as to form the cross-shaped wing assembly 1.
The traditional cross wing type control rod cannot meet the condition that the drive mechanism is connected with the control rod in a hoisting mode. According to the invention, the cross-shaped support column 11 and the absorption plate 12 form a structural form with a central shaft, the driving mechanism can be arranged above the cross-shaped wing control rod, the connection between the cross-shaped wing control rod and the driving mechanism can be in a hoisting state, the hoisting strength of the cross-shaped wing control rod can be better provided, the requirements of overall dimension, mechanical strength and rod drop impact are met, the manufacturing difficulty is reduced by the assembly structure of the cross-shaped wing assembly 1, the processing precision is ensured, the manufacturing of parts meets the requirements of manufacturability realization, the engineering and the productization are realized, the engineering application of the built-in hydraulic driving technology of the control rod on an advanced integrated small water reactor with the thermal power of less than 50MW is met, and the selection is provided for the engineering design of complex special-shaped structures in other industrial fields.
According to one embodiment of the present invention, as shown in fig. 1, 5 and 8, absorber plate 12 includes a cladding plate 121 and absorber rods 122, cladding plate 121 is configured as a U-shaped plate, the open end of the U-shaped plate is connected to rib 111, and absorber rods 122 extend in the axial direction of cross-shaped support column 11 and are sequentially arranged inside the U-shaped plate along the open end toward the closed end of the U-shaped plate. In this embodiment, cladding plate 121 is a U-shaped plate, and a cross-shaped supporting column 11 is connected to an opening end of the U-shaped plate, that is, cladding plate 121 has a U-shaped cross section. The absorption rods 122 are accommodated in the inner space of the cladding plate 121, the absorption rods 122 are sequentially arranged in a direction parallel to the axial direction of the cross-shaped support column 11 to form a tube bank, the cladding plate 121 is integrally attached to the outer side of the tube bank after the tube bank is fixed, and the opening end of the edge of the cladding plate 121 and the rib 111 of the cross-shaped support column 11 are riveted and fixed into an integral structure through rivets 4. The composition and fixation of the absorption plate 12 and the cladding plate 121 structure realize the reasonable matching of the boron carbide absorption tube structure and the cross-shaped wing structure.
In this embodiment, the cladding plate 121 is provided with the rivet hole 41 at the edge correspondingly connected to the cross support post 11, and the rib 111 of the cross support post 11 is also provided with the rivet hole 41 correspondingly, so that the opening end of the edge of the cladding plate 121 is riveted with the rib 111 of the cross support post 11 by the rivet 4.
In this embodiment, the cladding plate 121 is further provided with cooling water holes 1212 for cooling water outside the cross-shaped airfoil control rod to circulate in the absorption plate 12 and pass through the absorption rods 122 for effective heat exchange.
According to an embodiment of the present invention, as shown in fig. 9, the absorber rod 122 includes a tube 1221, a boron carbide pellet 1222, an upper end plug 1223 and a lower end plug 1224, the inside of the tube 1221 is filled with helium gas, the boron carbide pellet 1222 is disposed inside the tube 1221, and the inside of the tube 1221 leaves a space for thermal expansion and helium gas escape, and both ends of the tube 1221 are respectively plugged by the upper end plug 1223 and the lower end plug 1224. In this embodiment, the absorber rod 122 is composed of an upper end plug 1223, a tube 1221, a boron carbide pellet 1222, and a lower end plug 1224, the boron carbide pellet 1222 is placed inside the tube 1221, and the upper end plug 1223 and the lower end plug 1224 are welded and sealed to the tube 1221. The inside of the tube 1221 is filled with helium gas, and a space for thermal expansion and helium gas escape is reserved.
In this embodiment, the cross-shaped wing control rod using the absorption rod 122 can control the reactor reactivity, meet the requirement of natural circulation heat transfer, use boron carbide which is sufficient in market supply and low in price as a material for absorbing neutrons, can move in a cross gap between fuel element assemblies, meet the requirement of small friction and wear, have certain manufacturability and mechanical strength, and meet the requirements of manufacturing and processing and rod drop impact.
According to one embodiment of the invention, as shown in fig. 5, 6, 7 and 8, cladding plate 121 is formed with opposing recesses 1211 towards its inside, recesses 1211 extending in the axial direction of cross-shaped supporting column 11, recesses 1211 forming a cladding on the side near the closed end for cladding absorption bars 122 at the edge. The U-shaped cladding plate 121 forms a cladding part at the closed end through the recess 1211, the absorption rod 122 farthest from the cross-shaped support column 11 is accommodated in the cladding part, the recess 1211 is uniformly formed inwards on the cladding plate 121 between the absorption rod 122 and the adjacent absorption rod 122, the cladding plate 121 is enabled to be tightly attached to the outermost absorption rod 122, the edge strength of the cladding plate 121 is enhanced, and the overall strength and the structural size of the cross-shaped airfoil control rod are guaranteed.
According to an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 10 and fig. 12, the cross wing assembly 1 further includes two cross wing frames 13, the two cross wing frames 13 are coaxially disposed at two ends of the cross-shaped supporting column 11, and the four wing plates of each cross wing frame 13 are connected with the four absorbing plates 12 in a one-to-one correspondence manner. In this embodiment, the cross-shaped wing frame 13 specifically includes an upper cross-shaped wing frame 132 and a lower cross-shaped wing frame 133, the upper end of the cross-shaped support column 11 is connected to the upper cross-shaped wing frame 132, and the lower end of the cross-shaped support column 11 is connected to the lower cross-shaped wing frame 133, so as to form an integral structure of the cross-shaped wing assembly 1. The upper cross wing frame 132 and the lower cross wing frame 133 are respectively provided with four wing plates, the four wing plates respectively correspond to the four absorption plates 12, namely the upper ends of the four absorption plates 12 are respectively connected with the lower ends of the four wing plates of the upper cross wing frame 132, and the lower ends of the four absorption plates 12 are respectively connected with the upper ends of the four wing plates of the lower cross wing frame 133, so that the connection strength of the integral structure of the cross wing frame 13 and the absorption plates 12 is further improved, and the wing plates of the upper cross wing frame 132, the absorption plates 12 and the wing plates of the lower cross wing frame 133 are positioned on the same plane.
According to an embodiment of the invention, as shown in fig. 10, 12, 16 and 17, the cross-shaped wing frames 13 are provided with corresponding insertion holes 130, two ends of the absorption rod 122 are respectively inserted into the insertion holes 130 of the two cross-shaped wing frames 13, and the cladding plate 121 is riveted with the wing plates of the cross-shaped wing frames 13. In this embodiment, after the cross-shaped wing frame 13 is installed at two ends of the cross-shaped supporting column 11, the two ends of the absorbing rod 122 are placed into the insertion holes 130 of the cross-shaped wing frame 13 by using a certain bending deformation capability of the absorbing rod 122 itself, so as to fix the tube row. The upper end plug 1223 and the lower end plug 1224 of the absorbing rod 122 are inserted into the pipe 1221, and the other parts are respectively arranged in the insertion holes 130 on the upper cross wing frame 132 and the lower cross wing frame 133, so that the connection and the fastening with the cross wing frame 13 are realized. The upper end of the cladding plate 121 is riveted with the lower end of the wing plate of the upper cross-shaped wing frame 132 through a rivet 4, and the lower end of the cladding plate 121 is riveted with the upper end of the wing plate of the lower cross-shaped wing frame 133 through a rivet 4, so that the overall structural connection strength of the cross-shaped wing frame 13 and the absorption plate 12 is further improved, and the wing plate of the upper cross-shaped wing frame 132, the absorption plate 12 and the wing plate of the lower cross-shaped wing frame 133 are located on the same plane.
In this embodiment, cladding plate 121 is provided with rivet holes 41 at the edge corresponding to connecting cross-shaped wing frame 13, and wing plates of upper cross-shaped wing frame 132 and wing plates of lower cross-shaped wing frame 133 are also provided with corresponding rivet holes 41, so that the upper end of cladding plate 121 is riveted with the lower end of the wing plates of upper cross-shaped wing frame 132 by rivet 4, and the lower end of cladding plate 121 is riveted with the upper end of the wing plates of lower cross-shaped wing frame 133 by rivet 4.
According to one embodiment of the present invention, as shown in fig. 10, 11 and 12, both side surfaces of each wing plate are provided with protrusions 131. In this embodiment, each wing on the upper cross wing frame 132 and the lower cross wing frame 133 has a pair of protrusions 131, one protrusion 131 on one side of the wing and the other protrusion 131 on the other side of the wing. The cross wing assembly 1 carries out lifting movement in a cross fuel space, when the cross wing assembly 1 shakes or deflects in the moving process, the absorption plate 12 is easily in friction contact with the fuel element, the absorption plate 12 is abraded due to long-term reciprocating motion, the cross wing assembly 1 is only partially contacted with the fuel element due to the arrangement of the bulge 131 when the cross wing assembly 1 shakes in a deflection mode, the contact area between the cross wing assembly 1 and the fuel element is reduced or even avoided, the cross wing assembly is guided for the movement state of the cross wing control rod, and the friction abrasion between the cross wing control rod and the fuel element is reduced. In this embodiment, the protrusion 131 is manufactured by stamping, and a groove structure is stamped on the other side surface corresponding to the position of the protrusion 131, so that the protrusion 131 on the other side surface is formed.
According to an embodiment of the present invention, as shown in fig. 1, 2, 18 and 19, the cross-wing control rod further includes two connecting assemblies 2, the two connecting assemblies 2 are respectively disposed corresponding to the two cross-wing frames 13, each connecting assembly 2 includes a connecting shaft 21 and a bushing 22, the cross-wing frames 13 are provided with through holes 134 along an axial direction of the cross-shaped support column 11, both ends of the cross-shaped support column 11 are provided with connecting holes 110 extending axially on an axial direction thereof, and the connecting shaft 21 sequentially passes through the bushing 22 and the through holes 134 and enters the connecting holes 110. In this embodiment, the upper cross-shaped wing frame 132 and the lower cross-shaped wing frame 133 are provided with an axial through hole 134 at the central position, the two ends of the cross-shaped support column 11 are also provided with an axial connecting hole 110 at the central position, the connecting shaft 21 comprises an upper connecting shaft 211 and a lower connecting shaft 212, the shaft sleeve 22 also comprises an upper shaft sleeve 221 and a lower shaft sleeve 222, the upper connecting shaft 211 sequentially penetrates through the upper shaft sleeve 221 and the through hole 134 of the upper cross-shaped wing frame 132 from top to bottom and is in threaded connection with the connecting hole 110 at the upper end of the cross-shaped support column 11, and the lower connecting shaft 212 sequentially penetrates through the lower connecting sleeve and the through hole 134 of the lower cross-shaped wing frame 133 from bottom to top and is in threaded connection with the connecting hole 110 at the lower end of the cross-shaped support column 11, thereby realizing the structure and the connection of the cross-shaped control rod.
According to an embodiment of the present invention, four reinforcing ribs 223 are disposed on the shaft sleeve 22, the reinforcing ribs 223 extend along the axial direction of the shaft sleeve 22 and are distributed in a cross shape in the circumferential direction of the shaft sleeve 22, and the four reinforcing ribs 223 are disposed in one-to-one correspondence with the four wing plates of the cross-shaped wing frame 13. In this embodiment, four reinforcing ribs 223 extending outward are formed on the outer side of the shaft sleeve 22, the four reinforcing ribs 223 of the upper shaft sleeve 221 correspond to the four wing plates of the upper cross-shaped wing frame 132 respectively, and the four reinforcing ribs 223 of the lower shaft sleeve 222 correspond to the four wing plates of the lower cross-shaped wing frame 133 respectively, so as to play a role in supporting and fixing, and further strengthen the structural strength of the cross-shaped wing frame 13.
According to one embodiment of the invention, as shown in fig. 13, 14 and 15, the shaft sleeve 22 and the corresponding cross-shaped wing frame 13 are positioned by the pin 3, and the cross-shaped wing frame 13 and the cross-shaped support column 11 are positioned by the pin 3. In this embodiment, the lower end of the upper shaft sleeve 221 and the upper end of the upper cross-shaped wing frame 132 are respectively provided with a corresponding positioning hole 31, a pin 3 is placed in the positioning hole 31 for connection and positioning, the upper end of the lower shaft sleeve 222 and the lower end of the lower cross-shaped wing frame 133 are respectively provided with a corresponding positioning hole 31, and a pin 3 is placed in the positioning hole 31 for connection and positioning. The upper end of the cross-shaped support column 11 and the lower end of the upper cross-shaped wing frame 132 are respectively provided with a corresponding positioning hole 31, a pin 3 is placed in the positioning hole 31 for connection and positioning, the lower end of the cross-shaped support column 11 and the upper end of the lower cross-shaped wing frame 133 are respectively provided with a corresponding positioning hole 31, and the pin 3 is placed in the positioning hole 31 for connection and positioning.
In this embodiment, the upper connecting shaft 211 and the upper shaft bushing 221 are welded to prevent loosening, and the lower connecting shaft 212 and the lower shaft bushing 222 are welded to prevent loosening, so that the connecting shaft 21 and the shaft bushing 22 are prevented from loosening and separating, and the overall structure compactness and firmness of the cross-shaped airfoil control rod are enhanced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A cross wing section control rod is characterized in that: the cross wing assembly comprises a cross-shaped support column and four absorption plates, wherein the cross-shaped support column is provided with four ribs extending along the axial direction, the four ribs are distributed in a cross shape, and the four absorption plates are respectively fixed on the four ribs; the cross wing subassembly still includes two cross wing framves, two coupling assembling corresponds two respectively the cross wing frame sets up, every coupling assembling includes connecting axle and axle sleeve, the cross wing frame is followed the axial of cross support column is equipped with the through-hole, the both ends of cross support column all are equipped with axial extension's connecting hole on its axis, the connecting axle passes in proper order the axle sleeve with the through-hole gets into the connecting hole.
2. The cross-wing control rod as set forth in claim 1, wherein: the absorption plate comprises a cladding plate and an absorption rod, the cladding plate is in a U-shaped plate, and the open end of the U-shaped plate is connected with the rib; the absorption rods extend along the axial direction of the cross-shaped supporting column and are sequentially arranged on the inner side of the U-shaped plate along the direction from the opening end to the closed end of the U-shaped plate.
3. The cross-wing control rod set forth in claim 2, wherein: the absorption rod comprises a pipe body, boron carbide pellets, an upper end plug and a lower end plug, helium is filled in the pipe body, the boron carbide pellets are arranged in the pipe body, a space for thermal expansion and helium escape is reserved in the pipe body, and two ends of the pipe body are respectively plugged by the upper end plug and the lower end plug.
4. The cross-wing control rod as set forth in claim 2, wherein: the cladding plate is characterized in that opposite depressions are formed towards the inner side of the cladding plate, the depressions extend along the axial direction of the cross-shaped supporting column, a cladding part is formed on one side of each depression close to the closed end, and the cladding part is used for cladding the absorption rods positioned on the edge.
5. The cross-wing control rod as set forth in claim 2, wherein: the two cross wing frames are coaxially arranged at two ends of the cross supporting column respectively, and four wing plates of each cross wing frame are connected with the four absorbing plates in a one-to-one correspondence mode.
6. The cross-wing control rod set forth in claim 5, wherein: the cross-shaped wing frames are provided with corresponding insertion holes, two ends of the absorption rod are inserted into the insertion holes in the two cross-shaped wing frames respectively, and the cladding plate is riveted with the wing plates of the cross-shaped wing frames.
7. The cross-wing control rod as set forth in claim 5, wherein: and the surfaces of the two sides of each wing plate are provided with bulges.
8. The cross-wing control rod as set forth in claim 5, wherein: the shaft sleeve is provided with four reinforcing ribs, the reinforcing ribs extend along the axial direction of the shaft sleeve and are distributed in the circumferential direction of the shaft sleeve in a cross shape, and the four reinforcing ribs are arranged in one-to-one correspondence with the four wing plates of the cross wing frame.
9. The cross-wing control rod set forth in claim 8, wherein: the shaft sleeve and the corresponding cross-shaped wing frame are positioned through pins, and the cross-shaped wing frame and the cross-shaped support column are positioned through pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761602.4A CN112002442B (en) | 2020-07-31 | 2020-07-31 | Cross-wing control rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761602.4A CN112002442B (en) | 2020-07-31 | 2020-07-31 | Cross-wing control rod |
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| CN112002442A CN112002442A (en) | 2020-11-27 |
| CN112002442B true CN112002442B (en) | 2022-09-23 |
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| CN202010761602.4A Active CN112002442B (en) | 2020-07-31 | 2020-07-31 | Cross-wing control rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113409965A (en) * | 2021-06-17 | 2021-09-17 | 中国核动力研究设计院 | Integrated control rod assembly star frame and control rod assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214520A (en) * | 1997-08-22 | 1999-04-21 | 株式会社日立制作所 | Manufacturing method of control rod for boiling water reactor |
| CN1371102A (en) * | 2001-02-23 | 2002-09-25 | 株式会社日立制作所 | Control rod of boiling-water reactor |
| TWM259300U (en) * | 2004-07-06 | 2005-03-11 | Inst Nuclear Energy Res | Volume reduction compression device with cross-type control bar for boiling-water-type reactor |
| CN101178947A (en) * | 2007-12-11 | 2008-05-14 | 中国原子能科学研究院 | Boron carbide shielding assembly |
| TW200842898A (en) * | 2007-02-22 | 2008-11-01 | Toshiba Kk | Control rod for nuclear reactor and method of manufacturing control rod |
| CN110752044A (en) * | 2019-11-21 | 2020-02-04 | 中国核动力研究设计院 | Control rod with water flowing inside |
-
2020
- 2020-07-31 CN CN202010761602.4A patent/CN112002442B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1214520A (en) * | 1997-08-22 | 1999-04-21 | 株式会社日立制作所 | Manufacturing method of control rod for boiling water reactor |
| CN1371102A (en) * | 2001-02-23 | 2002-09-25 | 株式会社日立制作所 | Control rod of boiling-water reactor |
| TWM259300U (en) * | 2004-07-06 | 2005-03-11 | Inst Nuclear Energy Res | Volume reduction compression device with cross-type control bar for boiling-water-type reactor |
| TW200842898A (en) * | 2007-02-22 | 2008-11-01 | Toshiba Kk | Control rod for nuclear reactor and method of manufacturing control rod |
| CN101178947A (en) * | 2007-12-11 | 2008-05-14 | 中国原子能科学研究院 | Boron carbide shielding assembly |
| CN110752044A (en) * | 2019-11-21 | 2020-02-04 | 中国核动力研究设计院 | Control rod with water flowing inside |
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| Publication number | Publication date |
|---|---|
| CN112002442A (en) | 2020-11-27 |
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