Test mold for nuclear island steam generator compartment
By designing a combination structure of curved walls and flat walls to simulate the irregular shape and complex structure of the steam generator compartment, the problem of test result deviation caused by existing molds was solved, and higher test accuracy and compartment structure safety were achieved.
Patent Information
- Application Number
- CN202422655900.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing concrete test molds have relatively regular size and shape standards, resulting in large differences between the molded test blocks and the steam generator compartments. The concrete test results have large deviations and it is difficult to accurately reflect the actual working conditions of the compartments.
A test mold consisting of curved walls and flat walls was designed. Multiple inclined steps were set on the curved wall, and multiple straight steps were set on the flat wall to simulate the irregular shape and complex structure of the steam generator compartment. A complex casting cavity was formed by connecting the curved walls and the flat walls to simulate the influence of various structures on the compartment.
The accuracy of concrete test results is improved, ensuring the quality and safety of the steam generator compartment structure. The test mold can more accurately simulate the complex geometry and structure of the compartment, improving the accuracy of the test.
Smart Images
Figure CN223343670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuclear power plant construction, in particular to a test mold for a nuclear island steam generator compartment. Background Art
[0002] The nuclear island steam generator is a key component of a nuclear power plant's nuclear steam supply system. Located within the nuclear island, its primary function is to transfer heat generated by the reactor to the water on the secondary side, heating it and generating steam. The steam generator compartment is large and typically has an irregular geometric shape to accommodate the installation and operation of a variety of equipment. To ensure the stable and safe operation of this large, irregular concrete structure, concrete testing is required prior to construction. Existing concrete test molds typically have relatively regular size and shape standards. Test blocks formed using these regular test molds differ significantly from the steam generator compartment, resulting in significant deviations in the concrete test results, making it difficult to accurately reflect the actual working conditions of the steam generator compartment. Utility Model Content
[0003] The main purpose of this utility model is to propose a test mold for the nuclear island steam generator compartment, aiming to solve the technical problem that the existing concrete test molds in the prior art usually have relatively regular size and shape standards, and the test blocks formed by such regular test molds are quite different from the compartments, resulting in large deviations in the concrete test results.
[0004] To achieve the above-mentioned purpose, the test mold of the nuclear island steam generator compartment proposed in the utility model includes a curved wall and a plane wall, the curved wall is hollow to form a first pouring cavity for pouring concrete, and a plurality of spaced inclined steps are formed on each of the curved walls, and each of the inclined steps protrudes toward the side away from the first pouring cavity to form an inclined surface; the plane wall is hollow to form a second pouring cavity for pouring concrete, and a plurality of spaced straight steps are provided on the plane wall; the curved wall is connected to the plane wall at an angle, and the first pouring cavity and the second pouring cavity are connected to each other.
[0005] In one embodiment, the straight steps include a plurality of first steps and a plurality of second steps, each of the first steps protrudes outward along the length direction of the planar wall, and the protrusion lengths of each first step are different, and each of the second steps protrudes outward along the width direction of the planar wall, and the protrusion lengths of each second step are different.
[0006] In one embodiment, a plurality of first steps are spaced apart along the height direction of the plane wall, and the protrusion lengths of the spaced apart first steps decrease from top to bottom to form an inverted step shape.
[0007] In one embodiment, the plurality of inclined steps are spaced apart along the height direction of the arc-shaped wall, and the protruding lengths of the plurality of inclined steps are different, and the inclination angles of the inclined surfaces are different.
[0008] In one embodiment, the curved wall includes two curved plates with the same curvature and spaced apart from each other and a first end plate connected between the two curved plates, and the first end plate and the two curved plates together enclose the first casting cavity; the plane wall includes two plane plates arranged at intervals and a second end plate and a third end plate connected between the two plane plates, and the second end plate and the third end plate are respectively connected to the two ends of the two plane plates, and the second end plate, the third end plate and the two plane plates together enclose the second casting cavity; the two curved plates are connected to one of the plane plates.
[0009] In one embodiment, each of the curved plates and each of the flat plates is a steel plate, and a side of each of the curved plates facing the first casting cavity and a side of each of the flat plates facing the second casting cavity are both provided with pegs.
[0010] In one embodiment, a plurality of embedded parts are provided on the plane plate facing away from the curved wall, and each of the embedded parts is located on a side of the plane plate facing away from the second casting cavity.
[0011] In one embodiment, a cantilever beam is connected between the end of the curved wall away from the planar wall and the planar wall, a cantilever cavity is formed inside the cantilever beam, and both ends of the cantilever cavity are respectively connected to the first casting cavity and the second casting cavity.
[0012] In one embodiment, a hole is opened on the planar wall, and the hole runs through the width direction of the planar wall.
[0013] In one embodiment, a vent hole is formed on the lower wall of the hole.
[0014] The test mold for the nuclear island steam generator compartment proposed by the utility model simulates the overall shape of the steam generator compartment by arranging interconnected curved walls and plane walls, simulates the influence of the inclined structure on the steam generator compartment by arranging multiple inclined steps on the curved wall, and simulates the influence of structures with different cross-sectional sizes on the steam generator compartment by arranging multiple straight steps on the plane wall. Various structures on the steam generator compartment are simulated by the curved wall, the plane wall and the inclined steps and straight steps thereon, so that the test mold proposed by the utility model integrates a variety of complex structures of different shapes and sizes. The test blocks formed by the test mold better fit the complex geometric shape of the steam generator compartment, so that the concrete test results are closer to the actual working conditions of the steam generator compartment, the accuracy of the test results is improved, and it helps to ensure the quality and safety of the nuclear island steam generator compartment structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0016] Figure 1 A schematic structural diagram of an embodiment of a test mold for a nuclear island steam generator compartment provided by the present invention at one viewing angle;
[0017] Figure 2 A schematic structural diagram of an embodiment of a test mold for a nuclear island steam generator compartment provided by the present invention, viewed from another perspective;
[0018] Figure 3 This is a schematic top view of the structure of an embodiment of a test mold for a nuclear island steam generator compartment provided by the present invention.
[0019] Description of Figure Numbers:
[0020] 10. Curved wall; 11. Curved plate; 12. First end plate; 13. First casting cavity; 14. Inclined step; 20. Plane wall; 21. Plane plate; 22. Second end plate; 23. Third end plate; 24. Second casting cavity; 25. Straight step; 251. First step; 252. Second step; 26. Embedded part; 27. Hole; 271. Vent hole; 30. Stud; 40. Cantilever beam.
[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0025] In this utility model, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are as follows: Figures 1 to 3 The directions shown are for reference only and are used to explain the Figures 1 to 3 The relative positional relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.
[0026] Steam generator compartments are large and often have irregular geometries to accommodate the installation and operation of a variety of equipment. To ensure the stable and safe operation of these large, irregular concrete structures, concrete testing is required prior to construction. Existing concrete test molds typically have relatively standardized sizes and shapes. Test blocks formed using these molds differ significantly from the compartments themselves, leading to significant deviations in concrete test results and making it difficult to accurately reflect the actual operating conditions of the compartments.
[0027] The utility model proposes a test mold for a nuclear island steam generator compartment, comprising a curved wall 10 and a plane wall 20. The curved wall 10 is hollow to form a first pouring cavity 13 for pouring concrete. A plurality of spaced-apart inclined steps 14 are formed on each curved wall 10, and each inclined step 14 protrudes toward a side away from the first pouring cavity 13 to form an inclined surface. The plane wall 20 is hollow to form a second pouring cavity 24 for pouring concrete. A plurality of spaced-apart straight steps 25 are provided on the plane wall 20. The curved wall 10 and the plane wall 20 are connected at an angle, and the first pouring cavity 13 and the second pouring cavity 24 are communicated with each other.
[0028] See also Figure 1The curved wall 10 is curved and connected to the flat wall 20 at an angle. The first casting cavity 13 and the second casting cavity 24 are interconnected. The test blocks formed by this test mold have an overall shape similar to that of the nuclear island steam generator compartment. The curved wall 10 is provided with multiple inclined steps 14, each located at a different position on the curved wall 10. Each inclined step 14 can accurately reproduce the various complex inclined structures on the compartment and simulate the effects of inclined structures located at different positions on the compartment. The flat wall 20 is provided with multiple straight steps 25, which allows the test blocks formed by this test mold to have different cross-sectional dimensions, thereby simulating the effects of different cross-sectional dimensions on the steam generator compartment.
[0029] The test mold for the nuclear island steam generator compartment proposed by the utility model simulates the overall shape of the steam generator compartment by arranging an interconnected curved wall 10 and a plane wall 20, simulates the influence of the inclined structure on the steam generator compartment by arranging multiple inclined steps 14 on the curved wall 10, and simulates the influence of structures with different cross-sectional sizes on the steam generator compartment by arranging multiple straight steps 25 on the plane wall 20. Various structures on the steam generator compartment are simulated by the curved wall 10, the plane wall 20 and the inclined steps 14 and straight steps 25 thereon, so that the test mold proposed by the utility model integrates a variety of complex structures of different shapes and sizes. The test blocks formed by the test mold better fit the complex geometric shape of the steam generator compartment, so that the concrete test results are closer to the actual working conditions of the steam generator compartment, the accuracy of the test results is improved, and it helps to ensure the quality and safety of the nuclear island steam generator compartment structure.
[0030] In one embodiment, the straight steps 25 include a plurality of first steps 251 and a plurality of second steps 252, each first step 251 protrudes outward along the length direction of the planar wall 20, and the protruding lengths of each first step 251 are different, and each second step 252 protrudes outward along the width direction of the planar wall 20, and the protruding lengths of each second step 252 are different.
[0031] See also Figure 1 , Figure 1 The left and right directions in the figure are the length directions of the plane wall 20. Figure 1 The front-to-back direction is the width direction of the plane wall 20. Figure 1The vertical direction in the figure is the height direction of the planar wall 20. Each first step 251 protrudes outward along the length of the planar wall 20, and the protrusion lengths of each first step 251 are different. Thus, each first step 251 simulates the mechanical properties of structures of different lengths in the steam generator compartment. Each second step 252 protrudes outward along the width of the planar wall 20, and the protrusion lengths of each second step 252 are different. Thus, each second step 252 simulates the mechanical properties of structures of different widths in the steam generator compartment. By combining multiple first steps 251 and multiple second steps 252, a variety of combined structures of different lengths and widths can be formed, facilitating the simulation of various complex geometric shapes of different lengths and widths, more accurately simulating the complexity and irregularities of actual structures, and improving the accuracy of the test.
[0032] In one embodiment, the plurality of first steps 251 are spaced apart along the height direction of the plane wall 20 , and the protrusion lengths of the plurality of spaced apart first steps 251 decrease from top to bottom to form an inverted step shape.
[0033] Furthermore, the multiple first steps 251 are in the shape of inverted steps, that is, the first step 251 located at the top has the longest protrusion length, and the first step 251 located at the bottom has the shortest protrusion length, so that each first step 251 is cantilevered relative to the first step 251 below it, thereby facilitating the simulation of concrete structures of different lengths in the steam generator compartment.
[0034] In one embodiment, the plurality of inclined steps 14 are spaced apart along the height direction of the curved wall 10 , and the protruding lengths of the plurality of inclined steps 14 are different, and the inclination angles of the inclined surfaces are different.
[0035] It should be noted that each inclined step 14 protrudes outward and forms a ridge extending along the height of the curved wall 10, forming two inclined surfaces on either side of the ridge of the inclined step 14. The protrusion length of the ridge relative to the curved wall 10 of each inclined step 14 varies, and the inclination angle of each inclined surface varies. This allows the multiple inclined steps 14 to simulate inclined structures with a variety of different inclination angles. It should be noted that each inclined surface can be straight or curved, and the specific arrangement of each inclined surface depends on the actual structure of the steam generator compartment to be simulated.
[0036] In one embodiment, the curved wall 10 includes two curved plates 11 with the same curvature and spaced apart from each other, and a first end plate 12 connected between the two curved plates 11, and the first end plate 12 and the two curved plates 11 together enclose a first casting cavity 13; the plane wall 20 includes two plane plates 21 spaced apart and a second end plate 22 and a third end plate 23 connected between the two plane plates 21, and the second end plate 22 and the third end plate 23 are respectively connected to the two ends of the two plane plates 21, and the second end plate 22, the third end plate 23 and the two plane plates 21 together enclose a second casting cavity 24; the two curved plates 11 are both connected to one of the plane plates 21.
[0037] As can be understood, the two curved plates 11 have the same curvature and the same curvature direction. The first end plate 12 is located at the end of the curved wall 10 away from the planar wall 20 and is connected between the two curved plates 11. The second end plate 22 and the third end plate 23 respectively block the ends of the planar wall 20. An opening is formed in the middle of the planar plate 21, and the two curved plates 11 are respectively connected to either side of the opening, so that the curved wall 10 is connected to the middle of the planar wall 20, and the first casting cavity 13 and the second casting cavity 24 are interconnected. By enclosing the hollow curved wall 10 by the curved plates 11 and the first end plate 12, and the hollow planar wall 20 by the planar plate 21, the second end plate 22, and the third end plate 23, the test mold proposed by the present invention is easy to assemble and disassemble, and facilitates prefabrication.
[0038] In one embodiment, each curved plate 11 and each flat plate 21 is made of steel plates, and a bolt 30 is provided on the side of each curved plate 11 facing the first casting cavity 13 and on the side of each flat plate 21 facing the second casting cavity 24 .
[0039] See also Figure 3 The curved plate 11, flat plate 21, first end plate 12, second end plate 22, and third end plate 23 are all steel plates, welded together to provide them with high structural and connection strength, ensuring sufficient stability of the test mold during concrete pouring. By providing pegs 30 on the side of each flat plate 21 facing the first pouring cavity 13 and on the side of each curved plate 11 facing the second pouring cavity 24, the pegs 30 strengthen the connection between the concrete and the test mold, preventing the test mold from separating from the concrete and ensuring a tight connection between the concrete and various complex structures, thereby improving the quality of the test block.
[0040] In one embodiment, a plurality of embedded parts 26 are provided on the flat plate 21 facing away from the curved wall 10 , and each embedded part 26 is located on a side of the flat plate 21 facing away from the second casting cavity 24 .
[0041] See also Figure 2Embedded parts 26 are provided on the flat plate 21 not connected to the curved plate 11. Each embedded part 26 is provided on the side of the flat plate 21 facing away from the second casting cavity 24. The embedded parts 26 are integrally formed with the concrete in the second casting cavity 24. By providing embedded parts 26 of different sizes to simulate the actual situation of embedded parts 26 in the steam generator compartment, it is easier to determine the optimal installation position of the embedded parts 26 in the steam generator compartment.
[0042] In one embodiment, a cantilever beam 40 is connected between the end of the curved wall 10 away from the plane wall 20 and the plane wall 20, and a cantilever cavity is formed inside the cantilever beam 40, and the two ends of the cantilever cavity are respectively connected to the first pouring cavity 13 and the second pouring cavity 24.
[0043] It should be noted that the curved wall 10 and the planar wall 20 are connected at an angle, and a cantilever beam 40 is connected between the curved wall 10 and the planar wall 20. A cantilever cavity is formed within the cantilever beam 40. The cantilever cavity is cast together with the first casting cavity 13 and the second casting cavity 24. The cantilever beam 40 strengthens the overall stability between the curved wall 10 and the planar wall 20. In one embodiment, a cantilever plate is further provided between the curved wall 10 and the planar wall 20. The cantilever plate has a plate-like structure and can further enhance the overall stability of the curved wall 10 and the planar wall 20.
[0044] In one embodiment, a hole 27 is formed on the planar wall 20 , and the hole 27 runs through the width direction of the planar wall 20 .
[0045] As will be appreciated, hole 27 is located in the middle of planar wall 20 and extends through the width of planar wall 20. By providing hole 27, the test block formed by the test mold has a hole, thereby facilitating simulation of the structural strength and concrete pouring conditions at the hole location of the steam generator compartment, and facilitating research on the effect of the hole on the steam generator compartment structure. As will be appreciated, embedded part 26 is offset from the hole.
[0046] In one embodiment, a vent hole 271 is defined on the lower wall of the hole 27 .
[0047] Furthermore, the side walls of the hole 27 are blocked by wall panels, and exhaust holes 271 are provided on the wall panels for blocking the lower hole walls. The exhaust holes 271 ensure that the gas can be discharged smoothly during the concrete pouring process, reducing the formation of bubbles inside the concrete, thereby improving the density and structural strength of the concrete.
[0048] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A test mold for a nuclear island steam generator compartment, characterized in that: include: A curved wall, wherein the curved wall is hollow to form a first pouring cavity for pouring concrete, and each of the curved walls is formed with a plurality of spaced-apart inclined steps, each of the inclined steps protruding toward a side away from the first pouring cavity to form an inclined surface; A plane wall, wherein the plane wall is hollowed to form a second pouring cavity for pouring concrete, and the plane wall is provided with a plurality of straight steps arranged at intervals; The curved wall is connected to the plane wall at an angle, and the first pouring cavity and the second pouring cavity are communicated with each other.
2. The test mold for the nuclear island steam generator compartment according to claim 1, characterized in that: The straight steps include a plurality of first steps and a plurality of second steps, each of the first steps protrudes outward along the length direction of the planar wall, and the protrusion lengths of each first step are different, and each of the second steps protrudes outward along the width direction of the planar wall, and the protrusion lengths of each second step are different.
3. The test mold for the nuclear island steam generator compartment according to claim 2, characterized in that: The plurality of first steps are spaced apart along the height direction of the plane wall, and the protrusion lengths of the plurality of spaced apart first steps decrease from top to bottom to form an inverted step shape.
4. The test mold for the nuclear island steam generator compartment according to claim 1, characterized in that: The plurality of inclined steps are spaced apart along the height direction of the arc-shaped wall, and the protruding lengths of the plurality of inclined steps are different, and the inclination angles of the inclined surfaces are different.
5. The test mold for the nuclear island steam generator compartment according to claim 1, characterized in that: The curved wall includes two curved plates with the same curvature and spaced apart from each other, and a first end plate connected between the two curved plates, and the first end plate and the two curved plates together enclose the first casting cavity; the plane wall includes two plane plates arranged at intervals, and a second end plate and a third end plate connected between the two plane plates, and the second end plate and the third end plate are respectively connected to the two ends of the two plane plates, and the second end plate, the third end plate and the two plane plates together enclose the second casting cavity; the two curved plates are connected to one of the plane plates.
6. The test mold for the nuclear island steam generator compartment according to claim 5, characterized in that: Each of the arc-shaped plates and each of the plane plates is a steel plate, and a side of each of the arc-shaped plates facing the first casting cavity and a side of each of the plane plates facing the second casting cavity are both provided with bolts.
7. The test mold for the nuclear island steam generator compartment according to claim 6, characterized in that: A plurality of embedded parts are provided on the plane plate facing away from the curved wall, and each of the embedded parts is located on a side of the plane plate facing away from the second casting cavity.
8. The test mold for a nuclear island steam generator compartment according to any one of claims 1 to 7, characterized in that: A cantilever beam is connected between one end of the curved wall away from the plane wall and the plane wall, a cantilever cavity is formed inside the cantilever beam, and both ends of the cantilever cavity are respectively connected to the first casting cavity and the second casting cavity.
9. The test mold for a nuclear island steam generator compartment according to any one of claims 1 to 7, characterized in that: The plane wall is provided with holes, and the holes run through the width direction of the plane wall.
10. The test mold for a nuclear island steam generator compartment according to claim 9, characterized in that: An exhaust hole is provided on the lower hole wall of the hole.