Floor slab, manufacturing method thereof and installation method of cable in nuclear power plant

Abstract

The invention discloses a floor slab and a manufacturing method thereof, and a mounting method of a cable in a nuclear power plant, the floor slab comprises a floor slab main body which is made of concrete and is provided with a hole; the MCT frame is arranged in the hole so that a cable sealing unit can be installed in the MCT frame, a cable penetrating through the hole is fixed through the cable sealing unit, and the hole is sealed through the cable sealing unit; the floor slab body and the MCT frame are integrally formed through pouring. The MCT frame is a pre-embedded double-side MCT frame with a double-grid structure. According to the invention, the occupied area due to the additional use of a fixing device can be reduced, the interference risk between the MCT frame and the fixing embedded parts around the hole is reduced, the MCT assembly can be used in the hole, and the plugging effect of cable laying in a narrow space area is improved.

Description

Technical Field

[0001] The invention relates to a floor slab and a manufacturing method thereof, and a method for installing cables in a nuclear power plant. Background Art

[0002] After the cable is passed through the hole in the floor, in order to achieve airtightness, waterproofness, fire resistance and other requirements, an MCT component (MultiCable Transit) can be installed in the hole on site during construction to seal the hole. The MCT component includes an MCT frame and a cable sealing unit that can be installed on the MCT frame. The MCT frame provides an installation platform for hole sealing, and the cable sealing unit of the MCT frame is used to fix the cable and seal the hole.

[0003] By installing MCT components in the floor slab on site, the cables passing through the floor slab can be effectively fixed and the holes in the floor slab can be better sealed, thereby improving the sealing effect during the cable laying process.

[0004] In the prior art, when installing the MCT assembly in the floor, a fixing device is required in the MCT frame to fix the two ends of the MCT frame to the two sides of the floor. However, there are fixing embedded parts (such as panel embedded parts) arranged around the holes in the floor, and the space between the holes and the fixing embedded parts is narrow, while the fixing device occupies a large area of ​​the floor, resulting in interference between the MCT frame and the surrounding fixing embedded parts, and even making it impossible to install the MCT assembly in the hole, affecting the sealing effect of the cable layout. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a floor slab and a method for manufacturing the same, and a method for installing cables in a nuclear power plant in view of the above-mentioned deficiencies in the prior art. When the floor slab is installed, the floor slab body and the MCT frame are pre-molded as one piece by pre-embedded MCT frames, so that the area occupied by the fixing device can be reduced, and the risk of interference between the MCT frame and the fixing embedded parts around the hole can be reduced, so as to realize the use of MCT components in holes in narrow space areas, thereby improving the sealing effect of cable laying.

[0006] In a first aspect, the present invention provides a floor slab, comprising:

[0007] A floor slab body is made of concrete and has holes formed therein; and,

[0008] An MCT frame is arranged in the hole, so that a cable sealing unit can be installed in the MCT frame, and the cable passing through the hole can be fixed and the hole can be sealed by the cable sealing unit;

[0009] The floor slab body and the MCT frame are integrally formed by casting;

[0010] The MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0011] In some embodiments, the two ends of the MCT frame are respectively fixed at two openings at both ends of the hole.

[0012] In some embodiments, the double-sided MCT frame comprises:

[0013] The grid structure is used to install a cable sealing unit, through which the cable passing through the hole is fixed and the hole is sealed;

[0014] A sleeve, in which the grid structure is fixed, the outer contour of the sleeve is the outer contour of the double-sided MCT frame, and is used as a hole template during concrete pouring;

[0015] The wing plate is located on the outer side of the bottom of the sleeve and surrounds the sleeve. Anchor bars are connected to the upper part of the wing plate. The anchor bars are used to fix the position of the sleeve when pouring concrete.

[0016] In a second aspect, the present invention provides a method for manufacturing a floor slab, comprising:

[0017] S1. The MCT frame is placed at the first preset position of the floor model; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure;

[0018] S2. With the outer contour of the MCT frame as the boundary, concrete is poured on the floor slab model to form a floor slab body and an MCT frame fixed inside the floor slab body, thereby obtaining the floor slab.

[0019] In some embodiments, before step S1, the method further includes:

[0020] S01. Making a double-sided MCT frame; the double-sided MCT frame comprises a grid structure and a sleeve, the grid structure is fixed in the sleeve, and the cable passes through the inside of the grid structure; step S2, specifically comprising:

[0021] S21. Pour concrete into the floor slab model with the outer contour of the sleeve as the boundary.

[0022] In some embodiments, a decoration layer is provided above the main body of the floor; step S01 specifically comprises:

[0023] Determine a first dimension of the sleeve in a direction perpendicular to the floor slab according to the thickness of the floor slab body and the thickness of the finishing layer;

[0024] According to the first size, the double-sided MCT frame is manufactured.

[0025] In some embodiments, the double-sided MCT frame further includes wing plates and anchor bars.

[0026] The wing plate is connected to one side of the bottom of the sleeve, and the anchor bar is connected to the wing plate.

[0027] In some embodiments, the method further comprises:

[0028] According to the dimension of the fixed embedded part extending into the interior of the floor slab in the direction perpendicular to the floor slab, the second dimension of the anchor bar in the direction perpendicular to the floor slab is determined;

[0029] According to the second size, the double-sided MCT frame is manufactured.

[0030] In some embodiments, step S21 further includes:

[0031] A rib connecting the floor model and the sleeve is arranged at a third preset position to reduce the MCT frame deviation generated during concrete pouring.

[0032] In some embodiments, a fixed embedded part is provided at the second preset position of the floor model, and before step S1, the method further includes:

[0033] S02. Determine a first preset position according to the position of the fixed embedded part.

[0034] In a third aspect, the present invention provides a method for installing a cable in a nuclear power plant, the installation method comprising:

[0035] Laying the above-mentioned floor slab at the fourth preset position of the factory building;

[0036] A cable sealing unit is installed in the MCT frame, and the cable is passed through the MCT frame in the floor slab. The cable passing through the hole is fixed and the hole is sealed by the cable sealing unit; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0037] The floor slab of the present invention comprises a floor slab body and an MCT frame. Since a pre-buried double-sided MCT frame is adopted, in which the floor slab body and the MCT frame are integrally formed by casting, there is no need to use an additional fixing device to fix the MCT frame at the installation site, which can reduce the area occupied by the additional fixing device, reduce the risk of interference between the MCT frame and the fixing embedded parts around the hole, and realize the use of MCT components in holes in narrow space areas to improve the blocking effect of cable laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a floor provided by an embodiment of the present invention;

[0039] Figure 2A flow chart of a method for manufacturing a floor slab provided by an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of a top view of a pre-embedded double-sided MCT frame provided in an embodiment of the present invention;

[0041] Figure 4 for Figure 3 A schematic diagram of the main structure of a pre-buried double-sided MCT frame;

[0042] Figure 5 A flow chart of an application example of a method for manufacturing a floor slab provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make those skilled in the art better understand the technical scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only intended to explain the application, rather than to limit the application. For those skilled in the art, the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only for providing a better understanding of the application by illustrating the examples of the application.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] In the prior art, when installing the MCT component in the floor, the MCT frame is installed later, that is, the floor with reserved holes is pre-made, and then the MCT frame is installed on the floor, and the cables are laid and the holes are sealed. In the process of installing the MCT frame, a fixing device, such as a flange, is required to fix the two ends of the MCT frame on both sides of the floor. On the one hand, because the size of the flange is larger than the size of the hole, the flange occupies a large area of ​​the floor, and the MCT frame is easy to interfere with the fixed embedded parts around the hole (such as the panel embedded parts), and the MCT component cannot be installed in the hole, which affects the sealing effect of the cable laying, and the advantage of subsequent replacement or installation of cables is lost due to the inability to use the MCT component. On the other hand, because the MCT frame is installed in the floor after the floor is cast and formed, there are errors or even deformations in the holes reserved during the casting of the floor, resulting in a low matching degree with the MCT frame. The size of the MCT frame that can actually be installed in the hole after the floor slab is cast may be smaller than the size of the MCT frame that can be installed theoretically, resulting in the actual space for the cable to pass through being compressed, which makes it easy for the MCT blockage to be fully loaded.

[0046] The inventors have found through research that a composite floor is formed by pre-embedded MCT frames, that is, by casting a floor body with holes and an MCT frame arranged in the holes in the civil construction stage. For the floor, on the one hand, the area occupied by the use of additional fixing devices can be reduced, the risk of interference between the MCT frame and the fixing embedded parts around the holes can be reduced, and the use of MCT components in holes in narrow space areas can be achieved, thereby improving the blocking effect of cable laying. On the other hand, because the floor body and the MCT frame are integrally formed, the degree of matching between the two is high, the size of the MCT frame that can actually be installed is the same as the size of the MCT frame that can theoretically be installed, and the space where the cables can actually pass is the same as the space where the cables can theoretically pass, so as to increase the number of cables laid in the MCT frame.

[0047] Based on this, in order to solve the problems of the prior art, the present invention proposes a floor slab, a manufacturing method and system thereof, and an MCT frame. The floor slab body can be integrally formed with the MCT frame to reduce the area occupied by the fixing device and reduce the risk of interference between the MCT frame and the embedded fixing parts around the holes, so as to realize the use of MCT components in holes in narrow spatial areas and improve the sealing effect of cable laying.

[0048] Embodiment 1:

[0049] like Figure 1 As shown, this embodiment provides a floor slab, including:

[0050] The floor slab body a1 is made of concrete and has holes f; and,

[0051] The MCT frame a3 is arranged in the hole f, so that a cable sealing unit can be installed in the MCT frame, and the cable d passing through the hole f can be fixed by the cable sealing unit and the hole f can be sealed;

[0052] The floor slab body a1 and the MCT frame a3 are integrally formed by casting;

[0053] The MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0054] Here, the floor slab can be applied to fields with strict requirements for cable hole sealing. For example, the floor slab can be applied to factories (rooms) in scenes such as nuclear power plants, chemical industry, oil and gas industry, power industry, transportation, medical facilities, data centers, etc.

[0055] The main body of the floor slab includes the floor slab model in the civil construction stage and the concrete poured in the floor slab model. Among them, the floor slab model can be a model composed of steel bars in the civil construction stage. As a load-bearing structure, the main body of the floor slab can provide bearing capacity for the factory building.

[0056] The material of the MCT frame can be high-strength steel to provide structural strength and stability, ensuring that the MCT frame is not easily deformed or damaged during long-term use. In addition, the material of the MCT frame can also be at least one of stainless steel, galvanized carbon steel, etc.

[0057] The shape of the MCT frame can be a cuboid or a cylinder.

[0058] The interior of the MCT frame is a grid structure. Figure 3 A schematic diagram of a top view of a pre-embedded double-sided MCT frame provided in an embodiment of the present invention, as shown in FIG. Figure 3 As shown, the interior of the MCT frame a3 is a grid structure 1. On the one hand, the grid structure can provide an orderly path so that the cables can pass through the MCT frame according to a predetermined route. It can be understood that the grid structure is divided into a plurality of grids or channels, each grid can accommodate a certain number of cables, which is convenient for classifying and managing different types of cables.

[0059] Figure 4 for Figure 3 A schematic diagram of the main structure of a pre-embedded double-sided MCT frame, as shown in Figure 1 and Figure 4 As shown, the grid structure 1 comprises a top grid structure 11 and a bottom grid structure 12. By providing the top grid structure 11 and the bottom grid structure 12, it is convenient to fix and manage the cables passing through both sides of the floor.

[0060] It is understandable that the MCT frame is part of the MCT assembly, and the MCT assembly also includes a cable sealing unit. Specifically, the cable sealing unit specifically includes a partition plate and a clamping device. Among them, the partition plate includes an upper partition plate and a lower partition plate, and a hole that can accommodate a single row of cables is provided between the upper partition plate and the lower partition plate, so that the cables pass through the MCT frame through the partition plate. The clamping device may include a clamping rod and an adjusting nut, and the clamping rod may be a metal rod that applies pressure by rotating or moving. The adjusting nut is installed on the clamping rod, and the position and pressure of the clamping rod are adjusted by rotating the adjusting nut.

[0061] like Figure 4 As shown, of the upper and lower ends of the embedded double-sided MCT frame, the lower end has a wing plate 3, while the upper end is not provided with a wing plate, that is, the upper end does not have a fixing device used in the method of installing the MCT frame later. In this way, it can be applied to the area with narrow space above the floor slab to realize the use of MCT components in the holes in the narrow space area and improve the sealing effect of the cable laying.

[0062] In some other embodiments, there are no wing plates at both ends of the embedded double-sided MCT frame, and it can be applied to areas with narrow space above and below the floor, so that MCT components can be used in narrow space areas on both sides of the floor, thereby improving the sealing effect of cable laying.

[0063] The floor slab in this embodiment includes a floor slab body and an MCT frame. Since a pre-buried double-sided MCT frame is adopted, and the floor slab body and the MCT frame are integrally formed by casting, there is no need to use an additional fixing device to fix the MCT frame. Therefore, the area occupied by the use of additional fixing devices can be reduced, and the risk of interference between the MCT frame and the embedded fixings around the holes can be reduced. The MCT components can be used in holes in narrow space areas, thereby improving the sealing effect of cable laying.

[0064] In some embodiments, two ends of the MCT frame are respectively fixed to two openings at both ends of the hole (ie, the upper end and the lower end of the floor slab).

[0065] Combination Figure 1 and Figure 4 As shown, the end head with the wing plate 3 located at the bottom is fixed to the opening below the hole, and the end head without the wing plate located at the top is fixed to the opening above the hole. Because the end head located at the top is not provided with a wing plate, it can be applied to the narrow space area above the floor slab, so as to realize the use of MCT components in the hole in the narrow space area and improve the blocking effect of cable laying.

[0066] In the floor slab of this embodiment, the two ends of the MCT frame are respectively fixed at the two openings at both ends of the hole, so that MCT sealing can be performed on the upper and lower sides of the floor slab and both ends of the hole. While reducing the risk of interference between the MCT frame and the fixed embedded parts around the hole, the sealing effect of the cable laying can also be improved.

[0067] In some embodiments, Figure 1 and Figure 3 As shown, the double-sided MCT frame a3 includes:

[0068] The grid structure 1 is used to install a cable sealing unit, and the cable passing through the hole is fixed by the cable sealing unit and the hole is sealed;

[0069] Sleeve 2, grid structure 1 is fixed in sleeve 2, the outer contour of sleeve 2 is the outer contour of double-sided MCT frame a3, and is used as a hole template during concrete pouring;

[0070] The wing plate 3 is located outside the bottom of the sleeve 2 and surrounds the sleeve 2. An anchor bar 4 is connected to the upper part of the wing plate 3, and the anchor bar 4 is used to fix the position of the sleeve 2 when pouring concrete.

[0071] Here, the wing plate and anchor bar can be integrally formed with the grid structure and sleeve, or assembled by screws before pouring to form a Figure 3 and Figure 4 The bilateral MCT frame shown.

[0072] The double-sided MCT frame in this embodiment is located on the outside of the bottom of the sleeve and surrounds the wing plate of the sleeve. On the one hand, the wing plate is set when there is no interference from fixed embedded parts under the floor slab. On the other hand, the anchor bars connected to the wing plate can fix the MCT frame during the casting process, thereby improving the effect of integral casting of the floor slab body and the MCT frame.

[0073] Embodiment 2:

[0074] like Figure 2 As shown, this embodiment provides a method for manufacturing a floor slab, including steps S1 to S2:

[0075] Step S1. Place the MCT frame at a first preset position of the floor model; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0076] Here, the floor slab model may be a model made of steel bars during the civil construction phase.

[0077] The first preset position can be determined in the floor design stage to simulate the on-site environment, conduct early intervention on common interferences of items during construction, and create conditions for cable laying.

[0078] In some embodiments, a fixed embedded part is provided at the second preset position of the floor model, and before step S1, the method further includes:

[0079] Step S02: Determine a first preset position according to the position of the fixed embedded part.

[0080] Here, the fixed embedded part can be a panel embedded part, specifically, an embedded part used to fix electrical equipment (various control equipment, switchboard, etc.). The second preset position is the position where the fixed embedded part is located, which can be determined according to the position of the corresponding electrical equipment. Figure 1 As shown, the position of the fixed embedded part e is the second preset position P2.

[0081] During implementation, the first preset position is determined in the surrounding area of ​​the second preset position without interfering with the second preset position. The determined first preset position is convenient for laying cables corresponding to various electrical devices and passing through both ends of the floor.

[0082] In this embodiment, by determining the first preset position, interference between the MCT frame and the fixed embedded parts can be avoided, and the MCT components can be used in holes in narrow space areas, thereby improving the sealing effect of cable laying.

[0083] Step S2: Using the outer contour of the MCT frame as the boundary, pouring concrete on the floor slab model to form a floor slab body and an MCT frame fixed inside the floor slab body, thereby obtaining the floor slab.

[0084] Here, concrete is poured outside the MCT frame and between the floor slab forms, with the outer contour of the MCT frame as the boundary.

[0085] The shape of the MCT frame can be a cuboid or a cylinder, and the interior of the MCT frame can be holes or a grid structure.

[0086] In some embodiments, before step S1, the method further includes step S01:

[0087] Step S01. Make a double-sided MCT frame; the double-sided MCT frame includes a grid structure and a sleeve, the grid structure is fixed in the sleeve, and the cable passes through the inside of the grid structure.

[0088] Step S2 specifically includes:

[0089] S21. Pour concrete into the floor slab model with the outer contour of the sleeve as the boundary.

[0090] Here, if Figure 1 , Figure 3 and Figure 4 As shown, the double-sided MCT frame a3 includes a grid structure 1 and a sleeve 2 , and the grid structure 1 is fixed in the sleeve 2 .

[0091] In this embodiment, by making a double-sided MCT frame and pouring concrete, the outer contour of the sleeve of the double-sided MCT frame can be used as a hole template during concrete pouring to form a floor slab body and an MCT frame fixed in the floor slab body. This can reduce the area occupied by the use of additional fixing devices, reduce the risk of interference between the MCT frame and the fixed embedded parts around the holes, and realize the use of MCT components in holes in narrow spatial areas to improve the sealing effect of cable laying.

[0092] In some embodiments, Figure 1 As shown, a decoration layer a2 is arranged above the floor body a1; step S01 specifically comprises:

[0093] According to the thickness of the floor body a1 and the thickness of the decoration layer a2, the first dimension L1 of the sleeve 2 along the direction perpendicular to the floor is determined; according to the first dimension, the double-sided MCT frame is manufactured.

[0094] Here, the finishing layer is formed by leveling the upper surface of the floor slab. The first dimension L1 is equal to the thickness L11 of the floor slab body a1 and the thickness L12 of the finishing layer a2, so that the sleeve 2 extends out of the floor slab body a1 above the floor slab (i.e., one end close to the finishing layer) and extends to the surface of the finishing layer a2, so as to facilitate the installation of the cable sealing unit in the double-sided MCT frame.

[0095] In some embodiments, Figure 4 As shown, the double-sided MCT frame further includes a wing plate 3 and an anchor bar 4. The wing plate 3 is connected to one side of the bottom of the sleeve 2, and the anchor bar 4 is connected to the wing plate 3.

[0096] Exemplarily, the number of anchor bars can be determined according to the size of the MCT frame. Specifically, it can be determined according to the size of the MCT frame in the direction parallel to the floor slab. For example, the number of anchor bars is positively correlated with the size of the MCT frame in the direction parallel to the floor slab, so as to increase the contact surface between the MCT frame on both sides and the concrete, thereby increasing the bonding force between the MCT frame on both sides and the concrete.

[0097] In this embodiment, the double-sided MCT frame includes the wing plate 3 and the anchor bar 4, so that the bonding force between the double-sided MCT frame and the concrete can be increased after the concrete is poured.

[0098] In some embodiments, the method further comprises:

[0099] According to the third dimension L3 of the embedded fixing part extending into the interior of the floor slab in a direction perpendicular to the floor slab, the second dimension L2 of the anchor bar in a direction perpendicular to the floor slab is determined; according to the second dimension L2, a double-sided MCT frame is manufactured.

[0100] Here, if Figure 1As shown, the fixed embedded part e is integrally formed with the floor slab body and the MCT frame by pouring concrete. The third dimension L3 of the fixed embedded part extending into the floor slab along the direction perpendicular to the floor slab may be the dimension of the fixed embedded part along the direction perpendicular to the floor slab.

[0101] The dimension of the anchor bar 4 along the direction perpendicular to the floor slab is a second dimension L2, and the second dimension L2 is at least smaller than the thickness L11 of the floor slab body a1.

[0102] In some other embodiments, special-shaped anchor bars can also be provided, that is, to enhance the bonding force between the MCT frame and the main body of the floor slab, a longer anchor bar length can be provided, but the length of the anchor bar produced near the fixed embedded parts can be shortened to prevent interference with the fixed embedded parts above (when the length of the anchor bar is shortened, the number of anchor bars per unit wing plate area can be increased to meet the seismic performance of the anchor bar). Alternatively, no anchor bar is provided near the fixed embedded parts to prevent interference with the fixed embedded parts above. Alternatively, by optimizing the intervals between the anchor bars, the anchor bars produced near the fixed embedded parts can avoid interference with the fixed embedded parts in the horizontal direction.

[0103] In this embodiment, by connecting the wing plate on one side of the bottom of the sleeve and connecting a preset number of anchor bars above the wing plate, the contact area between the MCT frame and the main body of the floor slab can be increased, the bonding force between the MCT frame and the main body of the floor slab can be enhanced, and the sealing and safety of laying cables in the MCT frame can be improved. In addition, by limiting the second size to make a double-sided MCT frame, the risk of interference between the anchor bars and the fixed embedded parts in the direction perpendicular to the floor slab can be reduced.

[0104] In some embodiments, step S21 further includes:

[0105] A rib connecting the floor model and the sleeve is arranged at the third preset position P3 to reduce the MCT frame deviation generated during concrete pouring.

[0106] Here, if Figure 1 As shown, the third preset position P3 is between the upper outer side of the sleeve and the floor model. The rib plate b is connected to the MCT frame a3. During the civil construction stage, the rib plate b can be welded to the floor model and connected to the MCT frame a3 to prevent the MCT frame from deflecting or tilting during concrete pouring.

[0107] In this embodiment, the floor main body and the MCT frame fixed in the floor main body can be formed by placing the MCT frame and pouring concrete. The floor main body and the MCT frame are integrally formed by pouring, so the area occupied by the use of additional fixing devices can be reduced, and the risk of interference between the MCT frame and the fixed embedded parts around the holes can be reduced. The MCT components can be used in holes in narrow space areas to improve the sealing effect of cable laying.

[0108] Embodiment 3:

[0109] This embodiment provides a method for installing a cable in a nuclear power plant, including:

[0110] Laying the floor slab described in Example 1 at the fourth preset position of the factory building;

[0111] A cable sealing unit is installed in the MCT frame, and the cable is passed through the MCT frame in the floor slab. The cable passing through the hole is fixed and the hole is sealed by the cable sealing unit; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0112] Here, the fourth preset position is a position corresponding to the need for cable laying on any floor of the factory building, or on both sides of the floor slab, for example, a narrow space area on both sides of the floor slab where MCT components need to be used.

[0113] In this embodiment, by laying the floor slab and passing the cables through the MCT frame in the floor slab, the area occupied by the fixing device can be reduced, and the risk of interference with the embedded fixing parts around the holes can be reduced. The MCT components can be used in holes in narrow space areas to improve the sealing effect of the cable laying.

[0114] Embodiment 4:

[0115] This embodiment provides a floor slab manufacturing system, the system comprising:

[0116] A positioning device for placing the MCT frame at a first preset position of the floor model;

[0117] The casting equipment is used to cast concrete on the floor model with the outer contour of the MCT frame as the hole template to form the floor body and the MCT frame fixed in the floor body, so as to install the cable sealing unit in the MCT frame, and fix the cable passing through the hole and seal the hole through the cable sealing unit; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

[0118] Here, the pouring equipment is used in the civil construction stage. The embedded installation of the MCT frame is carried out after the wall panel reinforcement is completed, and it plays the role of hole support formwork when pouring concrete. At the same time, the embedded MCT frame and the reserved cable holes are realized, creating conditions for the implementation of double-sided MCT blocking on the floor slab.

[0119] In some embodiments, the system further comprises:

[0120] A manufacturing device for manufacturing a double-sided MCT frame; the double-sided MCT frame comprises a grid structure and a sleeve, the grid structure is fixed in the sleeve, and the outer contour of the sleeve is the outer contour of the double-sided MCT frame;

[0121] The casting equipment is also used to cast concrete on the floor slab model using the outer contour of the sleeve as a hole template during concrete casting, thereby forming the floor slab body and the MCT frame fixed in the floor slab body.

[0122] Here, the manufacturing equipment is used in the hole and frame funding stage. The cable hole and frame information is provided to the MCT plugging supplier and the design institute's structural department at the same time, which is used to carry out the prefabrication of the MCT frame and the design of the civil construction drawings. The above funding process can effectively shorten the MCT frame prefabrication and installation cycle, and is also the prerequisite for the pre-embedded frame construction.

[0123] In some embodiments, a fixed embedded part is provided at the second preset position of the floor model, and the system further comprises:

[0124] The design model is used to determine the first preset position according to the position of the fixed embedded part.

[0125] Here, the design model is applied in the hole and frame design stage. First, the panel equipment review is completed, the cable access area and cable situation of the panel equipment are confirmed, the hole position, hole size and MCT frame specifications are determined in combination with the structural characteristics of the installation site, and a three-dimensional model of the cable hole and MCT embedded frame is established. The above hole and frame design method can refine the installation conditions, simulate the on-site environment, and intervene in the common interference problems of items during construction in advance, creating good installation conditions for the site.

[0126] In this embodiment, through the floor manufacturing system composed of positioning equipment and casting equipment, the floor main body and the MCT frame can be formed in one piece through casting, so the area occupied by the use of additional fixing devices can be reduced, and the risk of interference between the MCT frame and the fixed embedded parts around the holes can be reduced. It can be realized that the MCT components can be used in holes in narrow space areas to improve the sealing effect of cable laying.

[0127] Embodiment 5:

[0128] The specific implementation process of the above method is described below in conjunction with specific application examples.

[0129] In nuclear power plants, silicone foam is generally used to seal the holes of cables after they pass through them to meet the requirements of airtightness, waterproofness, and fire resistance. However, since the cables are arranged in bundles in the holes, the gaps between the cables are difficult to be completely filled with sealing materials. Therefore, the boundaries of special areas such as the habitable areas of the main control room of nuclear power plants will use MCT components (MultiCable Transit) with better sealing performance to seal the holes on both sides. MCT sealing is a prefabricated standard component. After the MCT frame is installed, the cable is embedded in the MCT module and the interlayer board is installed when it passes through the frame grid structure. Finally, the cable gap is sealed by adjusting the clamping device to complete the installation of the MCT sealing.

[0130] In existing nuclear power plants, the double-sided MCT plugging is to use bolts to anchor independent MCT frames on both sides of the hole. However, since the habitable area of ​​the main control room is the lower incoming cable panel installed with embedded parts, the panel (the area where control equipment is concentrated or the installation platform of electrical equipment, mainly used to install various control equipment, distribution boards, etc.) has a complex internal structure and a large number of cables, resulting in a narrow space between the panel embedded parts and the cable holes. Therefore, there is often no condition for anchoring and installing the MCT frame on one side of the panel. In the past, similar situations often used a combination of MCT plugging and silicone foam plugging, that is, MCT plugging was used on the side of the hole away from the panel, and silicone foam plugging was used on the side close to the panel. However, this method reduces the plugging performance of the habitable boundary of the main control room, and also loses the advantage of MCT plugging in facilitating subsequent replacement or installation of cables. In addition, in order to avoid interference between the MCT frame and other installation items, its grid structure needs to be embedded in the hole. Therefore, in the method of installing the MCT frame later, the space that the cable can pass through will be compressed, and the MCT plugging is prone to full load. Based on the above problems, the present invention proposes a method for pre-embedded installation of an MCT frame and a frame structure.

[0131] The purpose of the present invention is to propose a method for pre-embedded installation of an MCT frame, which can complete the installation of the frame in place during the civil construction stage, solve the practical problem that the double-sided MCT blocking cannot be implemented in the space-constrained areas such as the habitable boundary of the main control room, and at the same time shorten the construction period and increase the space that the cables can pass through. That is, based on the logical relationship between the design, prefabrication, and construction of the MCT frame of a nuclear power plant, a process for pre-embedded installation of the frame is proposed, which mainly includes three-dimensional modeling of holes and frames, prefabrication, and pre-embedded installation. This process fully considers the construction characteristics of the nuclear power plant during the construction stage, so that the pre-embedded installation of the MCT frame can be implemented in actual projects, such as Figure 5 As shown, the specific technical solution includes the following S1 to S4:

[0132] S1. During the hole and frame design phase, the panel equipment review work is completed first, the equipment's accessible cable area and cable conditions are determined, the hole location, hole size, and MCT frame specifications are determined in combination with the structural characteristics of the installation site, and a three-dimensional model of the cable hole and MCT embedded frame is established. The above hole and frame design method can refine the installation conditions, simulate the on-site environment, and conduct early intervention on common item interference problems during construction, creating good installation conditions on site.

[0133] S2. During the hole and frame funding stage, the cable hole and frame information is provided to the MCT plugging supplier and the design institute's structural department for the prefabrication of the MCT frame and the design of the civil construction drawings. The above funding process can effectively shorten the MCT frame prefabrication and installation cycle, and is also the prerequisite for the pre-embedded frame construction.

[0134] S3. During the civil construction phase, the pre-embedded installation of the MCT frame is carried out after the wall panel reinforcement is tied, and it plays the role of hole support formwork during concrete pouring. At the same time, the pre-embedded MCT frame and reserved cable holes are realized, creating conditions for the implementation of double-sided MCT blocking of the habitable boundary of the main control room.

[0135] S4. During the cable laying phase, the subsequent installation work such as MCT modules, interlayer plates and clamping devices is carried out when the cables pass through the MCT frame, and finally the construction of double-sided MCT plugging is completed.

[0136] In addition, to realize the pre-embedded installation of MCT frame, such as Figure 1 , Figure 3 , Figure 4 As shown, a frame structure consisting of a grid structure 1, a sleeve 2, a wing plate 3 and an anchor 4 is proposed. In addition, an auxiliary installation area 5 is provided, in which a rib plate b can be installed to improve the stability and flatness of the pre-buried MCT frame, and a hole can be opened in the area to realize the connection between the pre-buried cable tube c and the cable hole, so as to further expand the application scenarios of the MCT frame.

[0137] The schematic diagram of the top view structure and the schematic diagram of the front view structure of the MCT frame in the present invention are respectively:

[0138] The grid structure 1 is fixed in the sleeve 2, and comprises a top grid structure 11 and a bottom grid structure 12, and is used for installing the MCT module, the interlayer plate and the clamping device when the cable passes through the frame, so as to achieve the double-sided MCT sealing of the cable hole.

[0139] The sleeve 2 is connected to the wing plate (flange) 3, and serves as a hole template to support the concrete pouring. At the same time, the MCT frame is pre-buried and the cable hole is reserved. The MCT frame is then installed by embedded installation after the hole pouring is completed. Therefore, under the condition of the same opening size, the pre-buried MCT frame method has more space for cables to pass through than the post-installed MCT frame method, which is more conducive to the cable laying work and the subsequent cable addition and modification.

[0140] The wing plate 3 is located at the bottom of the MCT frame and is used for plug welding the anchor bar 4.

[0141] The anchor bars 4 are used for installation and fixation when the MCT frame is embedded. The number and density of the anchor bars increase with the increase of the floor response spectrum of the installation site. At the same time, the size of the wing plate 3 can be designed according to the configuration of the anchor bars 4.

[0142] The auxiliary installation area 5 is arranged at the top of the sleeve 2. According to the actual installation environment on site, ribs can be welded between the auxiliary installation area 5 and the civil engineering reinforcement to reinforce the MCT frame to prevent the frame from shifting or tilting during concrete pouring. In addition, for panel equipment or holes that require buried pipes, holes can be drilled on site in the auxiliary installation area 5 to achieve the penetration of the pre-buried cable pipe c and the cable hole.

[0143] In addition, the MCT framework application and expansion installation diagram in the present invention are as follows Figure 1 As shown:

[0144] The civil engineering structure layer a1 (the main body of the floor) and the civil engineering decoration layer a2 (the decoration layer) are the basic structures for installing the MCT frame.

[0145] The rib b can be welded between the auxiliary installation area 5 and the civil engineering reinforcement to reinforce the MCT frame and prevent the frame from shifting or tilting during concrete pouring.

[0146] The cable pipe c is pre-buried in the civil construction decoration layer a2, and can be drilled on site in the auxiliary installation area 5 according to actual construction conditions to achieve the connection from the electrical equipment to the cable hole.

[0147] When laying, the cable d passes through the grid structure 1 (top grid structure 11 and bottom grid structure 12) of the MCT frame, and cooperates with the installation of the MCT module, the interlayer plate and the clamping device to complete the construction of the double-sided MCT plugging.

[0148] T-shaped embedded parts e are embedded in the front and rear sides of the platform, and the platform equipment is installed and fixed by welding or bolts.

[0149] In the above embodiment, by fully considering the construction process and structural characteristics of MCT plugging during the construction phase of a nuclear power plant, a method and frame structure for pre-embedded installation of an MCT frame are proposed, which can effectively solve the practical problem that the MCT frame cannot be installed in a narrow space, and create conditions for implementing double-sided MCT plugging at the habitable boundary of the main control room of a nuclear power plant, thereby improving the plugging performance of the habitable boundary of the main control room and creating favorable conditions for the subsequent renovation and expansion of the nuclear power plant.

[0150] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0151] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A floor slab, characterized in that: include: A floor slab body is made of concrete and has holes formed therein; and, An MCT frame is arranged in the hole, so that a cable sealing unit can be installed in the MCT frame, and the cable passing through the hole can be fixed and the hole can be sealed by the cable sealing unit; The floor slab body and the MCT frame are integrally formed by casting; The MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

2. The floor slab according to claim 1, characterized in that The two ends of the MCT frame are respectively fixed at the two openings at the two ends of the hole.

3. The floor slab according to claim 1, characterized in that: The bilateral MCT framework includes: The grid structure is used to install a cable sealing unit, through which the cable passing through the hole is fixed and the hole is sealed; A sleeve, in which the grid structure is fixed, the outer contour of the sleeve is the outer contour of the double-sided MCT frame, and is used as a hole template during concrete pouring; The wing plate is located on the outer side of the bottom of the sleeve and surrounds the sleeve. Anchor bars are connected to the upper part of the wing plate. The anchor bars are used to fix the position of the sleeve when pouring concrete.

4. A method for manufacturing a floor slab as claimed in any one of claims 1 to 3, characterized in that: include: S1. The MCT frame is placed at the first preset position of the floor model; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure; S2. With the outer contour of the MCT frame as the boundary, concrete is poured on the floor slab model to form a floor slab body and an MCT frame fixed inside the floor slab body, thereby obtaining the floor slab.

5. The method for manufacturing a floor slab according to claim 4, characterized in that: Before step S1, the method further includes: S01. Making a double-sided MCT frame; the double-sided MCT frame comprises a grid structure and a sleeve, the grid structure is fixed in the sleeve, and the cable passes through the inside of the grid structure; Step S2 specifically includes: S21. Pour concrete into the floor slab model with the outer contour of the sleeve as the boundary.

6. The method for manufacturing a floor slab according to claim 5, characterized in that: A decoration layer is arranged above the main body of the floor; step S01 specifically comprises: Determine a first dimension of the sleeve in a direction perpendicular to the floor slab according to the thickness of the floor slab body and the thickness of the finishing layer; According to the first size, the double-sided MCT frame is manufactured.

7. The method for manufacturing a floor slab according to claim 5, characterized in that: The double-sided MCT frame also includes wing plates and anchor bars. The wing plate is connected to one side of the bottom of the sleeve, and the anchor bar is connected to the wing plate.

8. The method for manufacturing a floor slab according to claim 7, characterized in that: The method further comprises: According to the dimension of the fixed embedded part extending into the interior of the floor slab in the direction perpendicular to the floor slab, the second dimension of the anchor bar in the direction perpendicular to the floor slab is determined; According to the second size, the double-sided MCT frame is manufactured.

9. The method for manufacturing a floor slab according to claim 7, characterized in that: Step S21 further includes: A rib connecting the floor model and the sleeve is arranged at a third preset position to reduce the MCT frame deviation generated during concrete pouring.

10. The method for manufacturing a floor slab according to claim 4, characterized in that: A fixed embedded part is arranged at the second preset position of the floor model. Before step S1, the method further includes: S02. Determine a first preset position according to the position of the fixed embedded part.

11. A method for installing cables in a nuclear power plant, characterized in that: The installation method comprises: Laying the floor slab according to any one of claims 1 to 3 at a fourth preset position of the factory building; A cable sealing unit is installed in the MCT frame, and the cable is passed through the MCT frame in the floor slab. The cable passing through the hole is fixed and the hole is sealed by the cable sealing unit; the MCT frame adopts a pre-buried double-sided MCT frame with a double grid structure.

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