Passive cooling water tank assembling and transporting jig frame for CAP1000 nuclear power plant

Abstract

The invention discloses a CAP1000 nuclear power plant passive cooling water tank assembling and transporting jig frame which comprises a transporting base frame, a supporting base column, a support layer set, a plurality of outer buttress columns and a plurality of inner buttress columns. The supporting base column is vertically arranged in the middle of the top face of the conveying base frame. The support layer group comprises multiple layers of annular frames which are stacked from bottom to top and detachably and fixedly connected, the annular frames coaxially sleeve the supporting base column, the annular frame located on the lowest layer is detachably and fixedly connected with the transportation base frame and the supporting base column, the annular frame located on the uppermost layer is detachably and fixedly connected with the supporting base column, and the outer diameters of all the annular frames are gradually reduced from bottom to top; all the outer buttress columns are annularly and uniformly arranged in a surrounding manner by taking the supporting foundation column as a shaft; all the inner buttress columns are annularly and uniformly arranged in a surrounding mode with the supporting base column as the axis. The problems that an existing jig frame is complex in structure, large in size, heavy in weight, large in installation difficulty, low in installation precision and incapable of being repeatedly used can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of the assembly and transportation of passive cooling water tanks in nuclear power plants, and particularly relates to a passive cooling water tank assembly and transportation jig for a CAP1000 nuclear power plant. Background Art

[0002] In the assembly of the passive cooling water tank structure module of a CAP1000 nuclear power plant, the passive cooling water tank assembly and transportation jig of the CAP1000 nuclear power plant is located at the bottom of the passive cooling water tank structure module and plays an important role in supporting and fixing the module during the assembly and transportation processes. Due to the complex structure, large volume, heavy weight, and high assembly precision of the passive cooling water tank structure module, the requirements for the jig platform are extremely high. The existing assembly platforms cannot effectively support the precision requirements for the assembly of the passive cooling water tank of the CAP1000 nuclear power plant, and they are complex in structure, large in volume, heavy in weight, difficult to install, and generally cannot be reused, which increases the construction cost on the side. Summary of the Invention

[0003] The purpose of the present invention is to provide a passive cooling water tank assembly and transportation jig for a CAP1000 nuclear power plant, so as to solve the problems of the existing jig being complex in structure, large in volume, heavy in weight, difficult to install, low in installation precision, and unable to be reused.

[0004] The present invention is achieved by the following technical solutions:

[0005] A passive cooling water tank assembly and transportation jig for a CAP1000 nuclear power plant, comprising: a transportation base frame, the transportation base frame being in the shape of a horizontally hollowed-out plate; support base columns, the support base columns being vertically arranged in the middle of the top surface of the transportation base frame; a support frame layer group, the support frame layer group including multiple layers of ring frames that are stacked from bottom to top and detachably and fixedly connected, the ring frames being coaxially sleeved outside the support base columns, the ring frame at the bottommost layer being detachably and fixedly connected to the transportation base frame and the support base columns respectively, the ring frame at the topmost layer being detachably and fixedly connected to the support base columns, and the outer diameters of all the ring frames gradually decreasing from bottom to top, so that the support frame layer group is in a stepped layer shape; multiple outer wall support columns, all the outer wall support columns being evenly arranged in a ring around the support base columns, and the bottom ends of the outer wall support columns being detachably and fixedly connected to the transportation base frame; multiple inner wall support columns, all the inner wall support columns being evenly arranged in a ring around the support base columns, and the bottom ends of the inner wall support columns being detachably and fixedly connected to the ring frame at the topmost layer.

[0006] Optionally, the ring frame includes multiple radial beams, the radial beams being horizontally arranged along the radial direction outward with the axis of the support base column as the axis, and all the radial beams of each layer of the ring frame being evenly arranged on the same horizontal plane; adjacent layers of the ring frames are detachably and fixedly connected by multiple vertical beams.

[0007] Optionally, the number of the radial beams of each layer of the ring frame is the same and they correspond to each other one by one, and all the corresponding radial beams are located in the same vertical plane; two corresponding radial beams of adjacent two layers of the ring frame are detachably and fixedly connected through a plurality of vertical beams.

[0008] Optionally, the support layer group further includes a plurality of annular tension rods, the annular tension rods are coaxially arranged with the ring frame, and the annular tension rods are detachably and fixedly connected with the radial beams or the vertical beams.

[0009] Optionally, a support block is arranged at the outer end of the radial beam, and the top surface of the support block is arranged as an inclined surface so that the inner side of the top surface of the support block is higher than the outer side.

[0010] Optionally, the outer ends of all the radial beams included in the lowermost ring frame are detachably and fixedly connected with a pulling seat, and the pulling seat is detachably and fixedly connected with the transportation base frame; each outer buttress column corresponds to one pulling seat, and the bottom end of the outer buttress column is detachably and fixedly connected with the corresponding pulling seat.

[0011] Optionally, an anti-tilting rod is arranged on the outer side wall of the outer buttress column, and one end of the anti-tilting rod far away from the outer buttress column is detachably and fixedly connected with the corresponding pulling seat so that the outer buttress column, the anti-tilting rod and the pulling seat form a right triangle structure.

[0012] Optionally, the transportation base frame includes a plurality of cross beams, a plurality of longitudinal beams and a plurality of side beams; all the cross beams are horizontally arranged, parallel and evenly spaced; all the longitudinal beams are horizontally arranged, parallel and evenly spaced; the cross beams and the longitudinal beams are perpendicularly and detachably fixedly connected so that the cross beams and the longitudinal beams are in the same horizontal plane; the end of the side beam is detachably and fixedly connected with the end of the cross beam and / or the end of the longitudinal beam so that all the side beams are connected end to end to enclose a polygonal frame shape; the pulling seat is detachably and fixedly connected to the side beam.

[0013] Optionally, the side wall of the inner buttress column is detachably and fixedly connected with the side wall of the support base column through a plurality of tension rods, and the tension rods are arranged along the radial direction of the support base column; the middle part of the support base column is hollowed out so that the support base column is in a cylindrical shape.

[0014] Optionally, a plurality of supports or universal wheels are arranged at the bottom of the transportation base frame.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] A passive cooling water tank assembling and transporting jig for CAP1000 nuclear power plants provided by the present invention provides an installation foundation and vertical structural support by setting a transportation base frame. By setting support columns, the center of the transportation base frame is confirmed, and radial structural support is provided for the assembly of subsequent other components. By setting a bracket layer group, which includes multiple stacked ring frames, and the outer diameter of the ring frames gradually decreases from bottom to top. During assembly, the bottom layer is first assembled and fixedly connected to the transportation base frame, and then assembled layer by layer from bottom to top. The lower ring frame is used as the vertical support for the upper ring frame, and at the same time, the support column is used as the radial support, layer by layer construction, which is convenient for construction positioning. The formed bracket layer group is in a stepped layer shape to adaptively adjust the number of layers and the outer diameter of each layer according to the actual shape of the cooling water tank, so as to match the actual shape of the cooling water tank. By setting outer buttress columns and inner buttress columns, the cooling water tank is positioned and limited from the outer wall and the inner wall respectively, which is convenient for structural reference during the subsequent construction of the cooling water tank. By setting that the above-mentioned components are all connected by a detachable fixed connection method, it is convenient for assembly and disassembly, and the disassembled components can be recycled. Through the mutual cooperation of the above-mentioned features, the passive cooling water tank assembling and transporting jig for CAP1000 nuclear power plants can effectively solve the problems of the existing jig with complex structure, large volume, heavy weight, difficult installation, low installation accuracy, and inability to be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of a passive cooling water tank assembling and transporting jig for CAP1000 nuclear power plants provided by an embodiment of the present invention.

[0019] Marks in the drawings and corresponding component names:

[0020] 10 - Transportation base frame; 11 - Cross beam; 12 - Longitudinal beam; 13 - Side beam; 14 - Support; 20 - Support column; 30 - Outer buttress column; 31 - Anti - tipping rod; 40 - Inner buttress column; 41 - Tie rod; 50 - Radial beam; 51 - Support block; 52 - Pulling seat; 60 - Vertical beam; 70 - Ring - shaped tie rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present invention are only used to explain the present invention and do not constitute a limitation to the present invention.

[0022] Please refer to Figure 1, an embodiment of the present invention provides a passive cooling water tank assembling and transporting jig for a CAP1000 nuclear power plant, including: a transport base frame 10, the transport base frame 10 being in the shape of a horizontal hollow plate; secondly, support base columns 20, the support base columns 20 being vertically arranged in the middle of the top surface of the transport base frame 10; thirdly, a support frame layer group, the support frame layer group including multiple layers of ring frames stacked from bottom to top and detachably and fixedly connected, the ring frames being coaxially sleeved outside the support base columns 20, the ring frame at the lowermost layer being detachably and fixedly connected to the transport base frame 10 and the support base columns 20 respectively, the ring frame at the uppermost layer being detachably and fixedly connected to the support base columns 20, the outer diameters of all the ring frames gradually decreasing from bottom to top, so that the support frame layer group is in a stepped layer shape; fourthly, multiple outer wall support columns 30, all the outer wall support columns 30 being evenly arranged in a ring shape with the support base columns 20 as the axis, the bottom ends of the outer wall support columns 30 being detachably and fixedly connected to the transport base frame 10; fifthly, multiple inner wall support columns 40, all the inner wall support columns 40 being evenly arranged in a ring shape with the support base columns 20 as the axis, the bottom ends of the inner wall support columns 40 being detachably and fixedly connected to the ring frame at the uppermost layer.

[0023] The passive cooling water tank assembling and transporting jig for a CAP1000 nuclear power plant provided in this embodiment, by setting the transport base frame 10, provides an installation foundation and vertical structural support. By setting the support base columns 20, the center of the transport base frame 10 is confirmed, and radial structural support is provided for the subsequent assembly of other components; by setting the support frame layer group, which includes multiple layers of stacked ring frames, and the outer diameters of the ring frames gradually decrease from bottom to top. During assembly, first assemble the lowermost layer and fix it to the transport base frame 10, and then assemble layer by layer from bottom to top. Use the lower ring frame as the vertical support for the upper ring frame, and at the same time use the support base columns 20 as the radial support to build layer by layer, which is convenient for building positioning. The formed support frame layer group is in a stepped layer shape to adaptively adjust the number of layers and the outer diameter of each layer according to the actual shape of the cooling water tank to match the actual shape of the cooling water tank; by setting the outer wall support columns 30 and the inner wall support columns 40, position and limit the cooling water tank from the outer wall and the inner wall respectively, which is convenient for structural reference during the subsequent construction of the cooling water tank; by setting that all the above components are connected in a detachable and fixed connection manner, it is convenient for assembly and disassembly, and the disassembled components can be recycled; through the mutual cooperation of the above features, the passive cooling water tank assembling and transporting jig for a CAP1000 nuclear power plant can effectively solve the problems of the existing jig, such as complex structure, large volume, heavy weight, difficult installation, low installation accuracy, and inability to be reused.

[0024] It should be noted that in this embodiment, the above detachable connection is generally realized by screws and nuts, and in other embodiments, any multiple existing quick-connecting parts in the prior art can also be used to realize the detachable connection.

[0025] To further explain the specific structure of the support layer group, the ring frame includes a plurality of radial beams 50, the radial beams 50 are horizontally arranged radially outward with the axis of the support base column 20 as the axis, and all the radial beams 50 of each layer of the ring frame are evenly distributed on the same horizontal plane; adjacent two layers of the ring frames are detachably and fixedly connected by a plurality of vertical beams 60.

[0026] For the convenience of positioning and fixed connection, the number of the radial beams 50 of each layer of the ring frame is the same and they correspond one by one, and all the corresponding radial beams 50 are located in the same vertical plane; two corresponding radial beams 50 of adjacent two layers of the ring frames are detachably and fixedly connected by a plurality of vertical beams 60.

[0027] To further circumferentially reinforce and position the ring frame, the support layer group further includes a plurality of annular tie rods 70, the annular tie rods 70 are coaxially arranged with the ring frame, and the annular tie rods 70 are detachably and fixedly connected with the radial beams 50 or the vertical beams 60.

[0028] To further adapt to the shape of the cooling water tank, a support block 51 is provided at the outer end of the radial beam 50, and the top surface of the support block 51 is set as an inclined surface so that the inner side of the top surface of the support block 51 is higher than the outer side.

[0029] It should be noted that the angle of the support block 51 is adjustable to be adaptively adjusted according to the actual parameters of the cooling water tank.

[0030] To further improve the connection performance between the lowermost ring frame and the transport base frame 10 and optimize the force-bearing condition, the outer ends of all the radial beams 50 included in the lowermost ring frame are detachably and fixedly connected with a pulling seat 52, and the pulling seat 52 is detachably and fixedly connected with the transport base frame 10; each outer buttress column 30 corresponds to one pulling seat 52 respectively, and the bottom end of the outer buttress column 30 is detachably and fixedly connected with the corresponding pulling seat 52.

[0031] Through the above settings, the pulling seat 52 is fixed by the transport base frame 10 and the outer buttress columns 30 at the same time, and then the pulling seat 52 is used to pull the lowermost radial beam 50 radially from the end, and in cooperation with the fixed connection between the inner end of the radial beam 50 and the side wall of the support base column 20, so as to provide great structural fixation for the radial beam 50 in the length direction, so that when it bears a lateral force (i.e., a vertically downward force), it has sufficient structural support.

[0032] To structurally support the external buttress column 30 and prevent it from bending outward under stress, an anti-tilting rod 31 is provided on the outer sidewall of the external buttress column 30. One end of the anti-tilting rod 31 away from the external buttress column 30 is detachably and fixedly connected to the corresponding pulling seat 52, so that the external buttress column 30, the anti-tilting rod 31 and the pulling seat 52 form a right-angled triangle structure.

[0033] To further explain the specific structure of the transport base frame 10, the transport base frame 10 includes a plurality of cross beams 11, a plurality of longitudinal beams 12 and a plurality of side beams 13; all the cross beams 11 are arranged horizontally, parallel and at uniform intervals; all the longitudinal beams 12 are arranged horizontally, parallel and at uniform intervals; the cross beams 11 are perpendicularly and detachably fixedly connected to the longitudinal beams 12, so that the cross beams 11 and the longitudinal beams 12 are on the same horizontal plane; the end of the side beam 13 is detachably fixedly connected to the end of the cross beam 11 and / or the end of the longitudinal beam 12, so that all the side beams 13 are connected end to end to enclose a polygonal frame; the pulling seat 52 is detachably fixedly connected to the side beam 13.

[0034] Through the above settings, it is possible to further reduce the weight on the premise of ensuring the structural performance, and use fewer components for assembly, effectively improving the assembly efficiency.

[0035] To structurally support the internal buttress column 40 and prevent it from bending inward under stress, the sidewall of the internal buttress column 40 is detachably and fixedly connected to the sidewall of the support base column 20 through a plurality of tie rods 41. The tie rods 41 are arranged along the radial direction of the support base column 20; the middle part of the support base column 20 is hollowed out, so that the support base column 20 is in a cylindrical shape.

[0036] The support base column 20 is set in a cylindrical shape, which can effectively reduce the weight on the premise of ensuring the structural performance.

[0037] To reduce the support area or facilitate movement, a plurality of supports 14 or universal wheels are provided at the bottom of the transport base frame 10.

[0038] The above specific embodiments have further elaborated on the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CAP1000 nuclear power plant passive cooling water tank assembly and transportation frame, characterized in that: include: A transport base frame (10), wherein the transport base frame (10) is in the shape of a horizontal hollow plate; A supporting column (20), wherein the supporting column (20) is vertically arranged in the middle of the top surface of the transport base frame (10); A support layer group, the support layer group comprises a plurality of ring frames stacked from bottom to top and detachably fixedly connected, the ring frames being coaxially sleeved outside the support base column (20), the ring frames located at the bottom layer being detachably fixedly connected to the transport base frame (10) and the support base column (20), respectively, the ring frames located at the top layer being detachably fixedly connected to the support base column (20), the outer diameters of all the ring frames gradually decreasing from bottom to top, so that the support layer group is in a stepped layer shape; A plurality of external buttress columns (30), all of which are evenly arranged in a ring shape around the supporting base column (20) as an axis, and the bottom ends of the external buttress columns (30) are detachably fixedly connected to the transport base frame (10); A plurality of inner buttress columns (40) are arranged uniformly in a ring shape with the supporting base column (20) as an axis, and the bottom ends of the inner buttress columns (40) are detachably fixedly connected to the uppermost ring frame.

2. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 1 is characterized in that: The ring frame comprises a plurality of radial beams (50), the radial beams (50) being horizontally arranged radially outwardly with the axis of the supporting base column (20) as the axial direction, and all the radial beams (50) of each layer of the ring frame being evenly arranged on the same horizontal plane; The ring frames of two adjacent layers are detachably fixedly connected via a plurality of vertical beams (60).

3. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 2 is characterized in that: The number of the radial beams (50) of each layer of the ring frame is the same and corresponds one to one, and all corresponding radial beams (50) are located in the same vertical plane; The two radial beams (50) corresponding to the two adjacent layers of the ring frames are detachably fixedly connected via a plurality of vertical beams (60).

4. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 3 is characterized in that: The supporting layer group further comprises a plurality of annular tie rods (70), the annular tie rods (70) being coaxially arranged with the ring frame, and the annular tie rods (70) being detachably fixedly connected with the radial beams (50) or the vertical beams (60).

5. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 2 is characterized in that: A support block (51) is provided at the outer end of the radial beam (50), and the top surface of the support block (51) is arranged as an inclined surface so that the inner side of the top surface of the support block (51) is higher than the outer side.

6. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 2 is characterized in that: The outer ends of all the radial beams (50) included in the ring frame located at the bottom are detachably fixedly connected to a pulling seat (52), and the pulling seat (52) is detachably fixedly connected to the transport base frame (10); Each of the outer buttress columns (30) corresponds to a pulling seat (52), and the bottom end of the outer buttress column (30) is detachably fixedly connected to the corresponding pulling seat (52).

7. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 6 is characterized in that: An anti-roll bar (31) is provided on the outer side wall of the outer buttress column (30), and one end of the anti-roll bar (31) away from the outer buttress column (30) is detachably fixedly connected to the corresponding pulling seat (52), so that the outer buttress column (30), the anti-roll bar (31) and the pulling seat (52) form a right triangle structure.

8. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 6 is characterized in that: The transport base frame (10) comprises a plurality of cross beams (11), a plurality of longitudinal beams (12) and a plurality of side beams (13); All the cross beams (11) are arranged horizontally, parallelly and evenly spaced; All of the longitudinal beams (12) are arranged horizontally, parallelly and evenly spaced; The cross beam (11) and the longitudinal beam (12) are vertically detachably fixedly connected so that the cross beam (11) and the longitudinal beam (12) are located in the same horizontal plane; The end of the side beam (13) is detachably fixedly connected to the end of the cross beam (11) and / or the end of the longitudinal beam (12), so that all the side beams (13) are connected end to end to form a polygonal frame; The pulling seat (52) is detachably fixedly connected to the side beam (13).

9. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 1, characterized in that: The side wall of the inner buttress column (40) is detachably fixedly connected to the side wall of the supporting base column (20) via a plurality of tie rods (41), and the tie rods (41) are arranged along the radial direction of the supporting base column (20); The middle part of the support base column (20) is hollowed out so that the support base column (20) is cylindrical.

10. The CAP1000 nuclear power plant passive cooling water tank assembly and transportation cradle according to claim 1, characterized in that: The bottom of the transport base frame (10) is provided with a plurality of supports (14) or universal wheels.

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