A condenser throat support module and support arrangement

Abstract

The utility model discloses a condenser throat support module and support device thereof, condenser throat support module, including first layer module, second layer module, third layer module and pipe row, module is assembled with steel pipe outside conventional island factory building, after hoisting and introducing condenser throat to carry out the assembly condenser throat support device, and the work efficiency is greatly promoted, improves the support device installation quality, reduces the narrow space construction safety risk, and the pipe row steel pipe changes with the total height of condenser throat support device, makes first layer module, second layer module, third layer module have the commonality.

Description

Technical Field

[0001] This utility model belongs to the field of condenser throat support structure, specifically relating to a condenser throat support module and support device. Background Technology

[0002] Currently, the throat of a nuclear power plant condenser typically adopts a "well"-shaped internal support structure, which consists of multiple layers of horizontal and vertical support pipes supported on the condenser throat shell plate. During construction, the support pipes are hoisted to the throat and then assembled on-site by erecting scaffolding.

[0003] However, due to the narrow internal space of the throat, it is difficult to operate, and the overlapping of the throat internal parts results in a long construction period, which will inevitably affect the construction of other processes. To address this, a condenser throat support module and support device are proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a condenser throat support module and support device to solve the above-mentioned technical problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] First aspect: A condenser throat support module for assembling condenser throat support devices, comprising a first layer module, a second layer module, a third layer module, and a pipe bank.

[0007] Both the first-layer module and the second-layer module are frame structures formed by stacking and welding module units of the same or different lengths in the Z direction together in the Y direction.

[0008] The module unit is welded together by multiple X-direction steel pipes, Y-direction steel pipes and Z-direction steel pipes through multiple first connecting plates and second connecting plates.

[0009] The pipe bank includes multiple pipe bank units, each of which is welded together from a single steel pipe and two second connecting plates.

[0010] The third-layer module is a frame structure made up of multiple X-direction steel pipes, Y-direction steel pipes, Z-direction steel pipes and diagonal steel pipes welded together by multiple connecting plates. The X-direction steel pipes, Y-direction steel pipes and Z-direction steel pipes are welded together by the first connecting plate, and the X-direction steel pipes, Y-direction steel pipes or Z-direction steel pipes and diagonal steel pipes are welded together by the third connecting plate.

[0011] The X, Y, and Z directions are three mutually perpendicular directions in three-dimensional space. The two straight lines corresponding to the X and Z directions form a horizontal plane, and the Y direction is a vertical direction.

[0012] Furthermore, the first, second, and third layer modules each include two sub-modules symmetrical about the vertical plane. Each sub-module in the first and second layer modules is constructed by stacking and welding module units together along the Y-direction. Dividing large modules into smaller ones facilitates lifting, installation, and adjustment in confined spaces.

[0013] Furthermore, the vertical height of the tube bank steel pipe is determined by the total height of the condenser throat support device; both vertical end faces of the tube bank steel pipe are provided with "U"-shaped grooves, and two second connecting plates are symmetrically arranged in the "U"-shaped grooves and welded to them, and the ends of the second connecting plates are flush with the corresponding end faces of the tube bank steel pipe.

[0014] When the total height of the condenser throat support device is different, the height of the tube bank steel pipe can be changed to make the first layer module, the second layer module, and the third layer module universal.

[0015] Furthermore, in the module unit, the first connecting plate is a chamfered rectangular steel plate with through holes on its surface. The Z-direction steel pipe passes through the through holes and is welded to them. The X-direction steel pipe has "U"-shaped grooves on both ends, with its circumference tangent to the end face of the first connecting plate near the through holes, and is welded to it. The Y-direction steel pipe has "U"-shaped grooves on both ends. The end of the first connecting plate furthest from the through holes is inserted into the "U"-shaped groove on the lower end face of the Y-direction steel pipe and welded to it. The other end face of the Y-direction steel pipe has a second connecting plate inserted into the "U"-shaped groove and welded to it, with the upper end face of the second connecting plate flush with the upper end face of the Y-direction steel pipe. After assembly, when viewed from the X direction, the Y-direction steel pipe and the Z-direction steel pipe form a cross shape; when viewed from the Y direction, the X-direction steel pipe and the Z-direction steel pipe form a cross shape; when viewed from the Z direction, the X-direction steel pipe and the Y-direction steel pipe form a cross shape.

[0016] Furthermore, in the third layer module, the X-direction steel pipe, Y-direction steel pipe, and / or Z-direction steel pipe are connected to the oblique steel pipe through a third connecting plate. The third connecting plate is a polygonal steel plate with through holes on its surface. The Z-direction steel pipe passes through the through holes and is welded to them. The "U"-shaped grooves of the X-direction steel pipe and the Y-direction steel pipe are inserted into the third connecting plate and welded to them. The oblique steel pipe has "U"-shaped grooves on both ends, and two corresponding third connecting plates are inserted into the grooves and welded to them.

[0017] The second aspect: a condenser throat support device, which, in addition to the condenser throat support module of the first aspect, also includes a lowest layer support riser and a side plate.

[0018] On the condenser baffle plate of the lowest layer support riser, the first layer module, the pipe bank, the second layer module and the third layer module are sequentially stacked and welded on the lowest layer support riser.

[0019] The side plate has four sides, each side plate is an isosceles trapezoidal steel plate. The four side plates together form a square platform-shaped space, in which the condenser throat support module is located. The axial ends of the X-direction steel pipe or Z-direction steel pipe are welded to the inner wall of the side plate through connecting stiffeners.

[0020] Furthermore, through holes for pipes are provided in the side plates.

[0021] Furthermore, the connecting stiffeners are welded to the inner wall of the side plate, and the connecting stiffeners are inserted into the "U"-shaped groove at the axial end of the X-direction steel pipe or the Z-direction steel pipe, and then welded.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this application, by prefabricating the various modules of the condenser throat support outside the conventional island plant, and then hoisting them into the condenser throat for assembly and installation, it is not necessary to connect the support device in the narrow space of the condenser throat. This greatly improves the efficiency, enhances the installation quality of the support pipe, and reduces the safety risks of construction in narrow spaces.

[0024] 2. When the total height of the condenser throat support device changes, only the height of the tube bank steel pipe needs to be changed, so that the first layer module, the second layer module, and the third layer module have versatility. Attached Figure Description

[0025] Figure 1 Isometric drawing of the module unit;

[0026] Figure 2 for Figure 1 Enlarged view of point A;

[0027] Figure 3 Front view of the first sub-module of the first layer of the modular unit assembly;

[0028] Figure 4 This is a front view of the first and second sub-modules of the first layer module after assembly.

[0029] Figure 5 This is an isometric view of the pipe row unit;

[0030] Figure 6 This is a top view of the third-layer module;

[0031] Figure 7 This is a side view of the third-layer module;

[0032] Figure 8 This is a schematic diagram of the overall structure of the condenser throat support device;

[0033] Figure 9 Modular partitioning diagram;

[0034] Figure 10 A schematic diagram showing the connection between the lowest layer support riser 8 and the condenser diaphragm.

[0035] Figure 11 A schematic diagram showing insufficient space for the module to be fully in place;

[0036] Figure 12 This is a temporary schematic diagram of the side panels; only two side panels are shown in the diagram.

[0037] Figure 13 This is a schematic diagram showing the connection between the side plate and the supporting steel pipe.

[0038] In the diagram, 000 is the condenser diaphragm, 1 is the X-direction steel pipe, 2 is the Y-direction steel pipe, 3 is the Z-direction steel pipe, 4 is the first connecting plate, 5 is the second connecting plate, 6 is the third connecting plate, 7 is the inclined steel pipe, 8 is the lowest layer support riser, 10 is the module unit, 100 is the first layer module, 101 is the first sub-module of the first layer module, 102 is the second sub-module of the first layer module, 200 is the second layer module, 201 is the first sub-module of the second layer module, 202 is the second sub-module of the second layer module, 300 is the third layer module, 301 is the first sub-module of the third layer module, 302 is the second sub-module of the third layer module, 400 is the pipe row, 401 is the pipe row steel pipe, 500 is the side plate, 501 is the first side plate, 502 is the second side plate, 503 is the third side plate, 504 is the fourth side plate, and 505 is the connecting stiffener. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0040] The condenser throat support module uses overlapping support pipes to assemble the condenser throat support device. If the support pipes were to be overlapped on-site at the condenser throat, scaffolding would be required, and a large number of welders would need to work in a confined space, inevitably increasing management difficulty, affecting work efficiency, and introducing construction safety risks. Therefore, the condenser throat support pipes are assembled and welded into four modules outside the conventional island plant. These four modules are then hoisted into the condenser throat location for assembly. This significantly improves work efficiency, enhances the quality of support pipe installation, and reduces the safety risks associated with construction in confined spaces.

[0041] The four modules are: first layer module 100, second layer module 200, third layer module 300, and pipe array 400.

[0042] Please see Figure 4 and 11 Although divided into three layers of modules, each layer is still relatively large, and interference and collisions can still occur during hoisting to the condenser throat. Therefore, during prefabrication, each layer of modules is divided into two symmetrical sub-modules to prevent interference and collisions during hoisting. After being hoisted to the condenser throat, the two sub-modules are welded and assembled into a complete module. Specifically, the first layer module 100 includes the first sub-module 101 and the second sub-module 102; the second layer module 200 includes the first sub-module 201 and the second sub-module 202; and the third layer module 300 includes the first sub-module 301 and the second sub-module 302.

[0043] Please see Figure 3 Each sub-module of the first-layer module 100 and the second-layer module 200 is formed by stacking and welding multiple module units 10 in the Y direction. The Z-direction lengths of different module units 10 may be the same or different. Figure 3 The image only shows the first sub-module 101 of the first-layer module 100. The first-layer module 100 and the second-layer module 200 have similar sub-modules and structures.

[0044] Among them, the X, Y and Z directions are three mutually perpendicular directions in three-dimensional space. The lines corresponding to the X and Z directions form a horizontal plane, and the Y direction is a vertical direction.

[0045] Please see Figure 1 and 2 The module unit 10 is formed by welding multiple X-direction steel pipes 1, Y-direction steel pipes 2 and Z-direction steel pipes 3 together through multiple first connecting plates 4 and second connecting plates 5.

[0046] The first connecting plate 4 is a chamfered rectangular steel plate with through holes on its surface. The Z-direction steel pipe 3 passes through the through holes and is welded to them. "U"-shaped grooves are formed on both ends of the X-direction steel pipe 1, with their circumferences tangent to the end faces of the first connecting plate 4 near the through holes, and are welded to each other for fixation. "U"-shaped grooves are formed on both ends of the Y-direction steel pipe 2. The end of the first connecting plate 4 furthest from the through holes is inserted into the "U"-shaped groove on the lower end face of the Y-direction steel pipe 2 and welded to it for fixation. The second connecting plate 5 is inserted into the "U"-shaped groove on the upper end face of the Y-direction steel pipe 2 and welded to it for fixation, with the upper end face of the second connecting plate 5 flush with the upper end face of the Y-direction steel pipe 2. After assembly, when viewed from the X direction, steel pipe 2 in the Y direction and steel pipe 3 in the Z direction form a cross shape; when viewed from the Y direction, steel pipe 1 in the X direction and steel pipe 3 in the Z direction form a cross shape; and when viewed from the Z direction, steel pipe 1 in the X direction and steel pipe 2 in the Y direction form a cross shape.

[0047] In this application, each Z-direction steel pipe 3 and the plurality of Y-direction steel pipes 2 connected to it via the connecting plate 4 in the module unit 10 are referred to as "a row"; each X-direction steel pipe 1 and the plurality of Y-direction steel pipes 2 connected to it via the connecting plate 4 are referred to as "a column".

[0048] After the module units 10 are stacked and installed, when viewed vertically, the length of the steel pipe 3 in the Z direction decreases from bottom to top in each layer, and correspondingly, the number of columns in each layer decreases from bottom to top. In this embodiment, when viewed along the Y direction, the first layer of module 100 is composed of three stacked module units 10, with the bottom two layers each having 16 columns and the top layer having 14 columns.

[0049] The second layer module 200 is also composed of three module units 10 stacked together, with the bottom two layers each having 14 columns and the top layer having 12 columns.

[0050] Pipe bar 400 includes multiple pipe bar units. Each pipe bar unit includes a vertically arranged steel pipe 401 and second connecting plates 5 at both ends. Figure 5 As shown, the upper and lower ends of the steel pipe 401 are provided with "U"-shaped grooves. Two second connecting plates 5 are respectively installed in the corresponding "U"-shaped grooves and welded to them. The ends of the second connecting plates 5 are flush with the corresponding end faces of the steel pipe 401, increasing the welding area with other steel pipes.

[0051] The vertical height of the tube bank steel pipe 401 is designed and prefabricated based on the total height of the condenser throat support device. When the total height of the condenser throat support device changes, only the height of the tube bank steel pipe 401 needs to be changed, ensuring the versatility of the first layer module 100, the second layer module 200, and the third layer module 300.

[0052] Please see Figure 6 and 7The third-layer module 300 has reserved space to accommodate the exhaust pipe of the low-pressure heater. The third-layer module 300 is a frame structure welded together by steel pipes 1 in the X direction, 2 in the Y direction, 3 in the Z direction, and oblique steel pipes 7 via connecting plates. In this module, the connection relationship between steel pipes 1 in the X direction, 2 in the Y direction, and 3 in the Z direction is the same as that in the first-layer module 100 or the second-layer module 200, all using the first connecting plate 4 for connection.

[0053] X-direction steel pipe 1, Y-direction steel pipe 2, and / or Z-direction steel pipe 3 are connected to the oblique steel pipe 7 via a third connecting plate 6. An oblique steel pipe refers to a steel pipe whose angle with the X-direction steel pipe 1, Y-direction steel pipe 2, or Z-direction steel pipe 3 after assembly is an obtuse or acute angle. The third connecting plate 6 is a polygonal steel plate with through holes on its surface. The Z-direction steel pipe 3 passes through these through holes and is welded to them for fixation. The third connecting plate 6 is inserted into the through slot of the corresponding X-direction steel pipe 1 and welded to it for fixation. The third connecting plate 6 is inserted into the U-shaped slot of the corresponding Y-direction steel pipe 2 and welded to it for fixation. U-shaped slots are formed on both ends of the oblique steel pipe 7, and two corresponding third connecting plates 6 are inserted into these slots and welded to them for fixation. Example 2

[0054] This embodiment utilizes the condenser throat support module from Embodiment 1 to assemble a support device at the condenser throat. In addition to the condenser throat support module from Embodiment 1, this support device also includes a bottom-level support riser 8 and side plates 500 disposed on the periphery. The side plates 500 have four sides: a first side plate 501, a second side plate 502, a third side plate 503, and a fourth side plate 504.

[0055] Because the lowest-level support riser 8 is located on condenser diaphragm 000, it must be constructed on condenser diaphragm 000 and cannot be prefabricated. Please refer to [link / reference]. Figure 10 The lowest layer support riser 8 is welded to the condenser diaphragm 000 through the second connecting plate 5. The second connecting plate 5 is vertically welded to the condenser diaphragm 000. Multiple lowest layer support risers 8 are distributed in a rectangular array on the condenser diaphragm 000. Their distribution pattern corresponds to the distribution pattern of the Y-direction steel pipe 2 of the lowest layer of the first layer module 100.

[0056] After the lowest layer support riser 8 is welded, the first layer module 100 is hoisted into place and the corresponding positions of the lowest layer support riser 8 and the first layer module 100 are checked to ensure that all fillet welds meet the welding requirements and the resulting plane is as horizontal as possible.

[0057] Each side panel 500 is an isosceles trapezoid, and pipe through holes are provided on the side panel 500 for pipes to pass through. When the side panels 500 are closed, they form a square platform-shaped space. Prefabricated modules are introduced into its internal space and assembled into a support device. Due to the large area of ​​each side panel, each side panel is divided into three pieces, and a ground-based prefabrication method is adopted. A total of 12 separate small side panels are assembled.

[0058] Please see Figure 11 and 12 Because the space above the condenser neck is small while the space below is large, the internal adjustment space becomes increasingly smaller as the support modules are introduced, making hoisting difficult. With the condenser side panels fully in place, the prefabricated modules cannot be introduced, therefore the side panels cannot be fully positioned and must be temporarily removed while leaving adjustment space.

[0059] After the side panel 500 is temporarily thrown out, the first layer module 100 is hoisted in, followed by the first sub-module 101 and the second sub-module 102 of the first layer module. There is no specific order in which they are hoisted in. After the two sub-modules are introduced, their adjustment and assembly are performed first. Please refer to [link / reference needed]. Figure 3 While ensuring the Z-axis centerline, adjust the Z-axis steel pipe 3 alignment. Measure and adjust the alignment deviation of the Z-axis steel pipe 3 between the two modules. After the alignment deviation is uniform, weld the two sub-modules together. After assembling the two sub-modules into the first layer module 100, lift and raise the first layer module 100, place it on the lowest supporting riser 8, and weld it, thus completing the assembly of the lowest supporting riser 8 and the first layer module 100. Simultaneously with the assembly of the first layer module 100, install and weld the exhaust pipe.

[0060] After the first layer module 100 is assembled, the pipe row 400 is installed on the top layer of the first layer module 100. The support pipe of the top layer of the first layer module 100 is welded to the lower end face of the pipe row steel pipe 401. Since the pipe row unit 401 is small in size, it is convenient to hoist, adjust and weld. It can be installed row by row or all at the same time.

[0061] After the pipe bank 400 is installed, two sub-modules of the second layer module 200 are hoisted in, namely the first sub-module 201 and the second sub-module 202 of the second layer module. The support pipe of the lowest layer of the second layer module 200 is welded to the upper end face of the pipe bank steel pipe 401. The hoisting, adjustment and welding methods are similar to those of the first layer module 100.

[0062] After the second-layer module 200 is installed, two sub-modules, namely the first sub-module 301 and the second sub-module 302 of the third-layer module 300, are hoisted into the third-layer module 300. The hoisting, adjustment, and welding methods are similar to those used for the first-layer module 100. Simultaneously with the assembly of the third-layer module 300, the low-pressure heater extraction pipe is installed and welded.

[0063] After the first to third layer modules are assembled, remove the 500 temporary fixing plates and supports from the side panels. The four side panels are then welded together to form a square platform-shaped condenser throat. Please refer to [link / reference needed]. Figure 13 After enclosing, the support pipe is connected to the side plate by welding the connecting stiffener 505 to the X-direction steel pipe 1 or the Z-direction steel pipe 3.

[0064] Please see Figure 8 At this point, the condenser throat support device installation is complete. Next, other construction procedures will be carried out, such as the installation of the low-pressure heater and the installation of the top support pipe, until the condenser neck installation is completed.

[0065] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A condenser throat support module, characterized in that, Used for assembling the throat support device of the condenser, including the first layer module, the second layer module, the third layer module and the tube bank; Both the first-layer module and the second-layer module are frame structures formed by stacking and welding module units of the same or different lengths in the Z direction in the Y direction. The module unit is welded together from multiple X-direction steel pipes, Y-direction steel pipes and Z-direction steel pipes through multiple first connecting plates and second connecting plates; The pipe bank includes multiple pipe bank units, and each pipe bank unit is welded together from a single steel pipe and two second connecting plates. The third-layer module is a frame structure formed by welding multiple X-direction steel pipes, Y-direction steel pipes, Z-direction steel pipes and oblique steel pipes through multiple connecting plates. The X-direction steel pipes, Y-direction steel pipes and Z-direction steel pipes are welded together by the first connecting plate, and the X-direction steel pipes, Y-direction steel pipes or Z-direction steel pipes and oblique steel pipes are welded together by the third connecting plate. The X, Y, and Z directions are three mutually perpendicular directions in three-dimensional space. The two straight lines corresponding to the X and Z directions form a horizontal plane, and the Y direction is a vertical direction.

2. The condenser throat support module according to claim 1, characterized in that, The first, second, and third layer modules each include two sub-modules that are symmetrical about the vertical plane. Each sub-module of the first and second layer modules is formed by stacking and welding module units in the Y direction.

3. The condenser throat support module according to claim 2, characterized in that, The vertical height of the steel pipes in the tube bank is determined by the total height of the condenser throat support device; The two vertical end faces of the pipe-pile steel pipe are each opened with a "ㄩ"-shaped groove. Two second connecting plates are symmetrically set in the "ㄩ"-shaped grooves and welded to them. The ends of the second connecting plates are flush with the corresponding end faces of the pipe-pile steel pipe.

4. The condenser throat support module according to claim 3, characterized in that, In the module unit, the first connecting plate is a chamfered rectangular steel plate with through holes on its surface. The Z-direction steel pipe passes through the through holes and is welded to them. The X-direction steel pipe has "U"-shaped grooves on both ends, with its circumference tangent to the end face of the first connecting plate near the through holes, and is welded to it. The Y-direction steel pipe has "U"-shaped grooves on both ends. The end of the first connecting plate furthest from the through holes is inserted into the "U"-shaped groove on the lower end face of the Y-direction steel pipe and welded to it. The other end face of the Y-direction steel pipe has a second connecting plate inserted into the "U"-shaped groove and welded to it, with the upper end face of the second connecting plate flush with the upper end face of the Y-direction steel pipe. After assembly, when viewed from the X direction, the Y-direction steel pipe and the Z-direction steel pipe form a cross shape; when viewed from the Y direction, the X-direction steel pipe and the Z-direction steel pipe form a cross shape; when viewed from the Z direction, the X-direction steel pipe and the Y-direction steel pipe form a cross shape.

5. The condenser throat support module according to claim 4, characterized in that, In the third layer module, the X-direction steel pipe, Y-direction steel pipe and / or Z-direction steel pipe are connected to the oblique steel pipe through a third connecting plate. The third connecting plate is a polygonal steel plate with through holes on its surface. The Z-direction steel pipe passes through the through holes and is welded to them. The "U"-shaped grooves of the X-direction steel pipe and the Y-direction steel pipe are inserted into the third connecting plate and welded to them. The oblique steel pipe has "U"-shaped grooves on both ends, and two corresponding third connecting plates are inserted into the grooves and welded to them.

6. A condenser throat support device, characterized in that, The condenser throat support module according to claim 5 further includes a lowest layer support riser and a side plate. On the condenser baffle plate of the lowest layer support riser, the first layer module, the pipe bank, the second layer module and the third layer module are stacked and welded on the lowest layer support riser from bottom to top. The side plate has four sides, each side plate is an isosceles trapezoidal steel plate. The four side plates together form a square platform-shaped space, in which the condenser throat support module is located. The axial ends of the X-direction steel pipe or the Z-direction steel pipe are welded and fixed to the inner wall of the side plate through connecting stiffeners.

7. The condenser throat support device according to claim 6, characterized in that, The side plate has through holes for pipes to pass through.

8. The condenser throat support device according to claim 7, characterized in that, The connecting stiffener is welded to the inner wall of the side plate. The connecting stiffener is inserted into the "U"-shaped groove at the axial end of the X-direction steel pipe or the Z-direction steel pipe and welded to it for fixation.

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