CN113482144A - Nuclear reactor cabin, framework mechanism and forming method thereof - Google Patents

Nuclear reactor cabin, framework mechanism and forming method thereof Download PDF

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Publication number
CN113482144A
CN113482144A CN202110845821.5A CN202110845821A CN113482144A CN 113482144 A CN113482144 A CN 113482144A CN 202110845821 A CN202110845821 A CN 202110845821A CN 113482144 A CN113482144 A CN 113482144A
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China
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assembly
annular
plate
rib
section
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CN202110845821.5A
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CN113482144B (en
Inventor
陈岩
孙运轮
陈景
王友刚
刘颖
罗胜
李晓红
杨明山
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CHINERGY CO LTD
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CHINERGY CO LTD
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

The invention discloses a nuclear reactor cabin, a framework mechanism and a forming method thereof, wherein three blocks are assembled and formed in the forming method: when a bottom plate structure of a nuclear reactor cabin is formed, a bottom pre-embedded plate in a first pre-embedded module can be supported on a bottom cabin wall section through the connecting assembly, then the screen cold water pipe assembly and a second pre-embedded module are supported on the first pre-embedded module, when concrete is poured, a supporting plate part of the bottom pre-embedded plate can be directly used as a bearing foundation of the concrete, and after the concrete is formed, partial pipe sections of the first pre-embedded module, the second pre-embedded module and the screen cold water pipe assembly are formed into an integrated structure with the concrete without dismounting any part.

Description

Nuclear reactor cabin, framework mechanism and forming method thereof
Technical Field
The invention relates to the technical field of nuclear reaction equipment, in particular to a nuclear reactor cabin, a framework mechanism and a forming method thereof.
Background
Currently, the bottom plate of the nuclear reactor cabin is usually made of reinforced concrete, and because the bottom plate is higher than the preset height of the foundation, a formwork support with a certain height needs to be erected before the bottom plate is poured, and the main function of the formwork support is to support the bottom formwork. And after the formwork support is finished, binding reinforcing steel bars above the bottom template, installing screen cold water pipes, pouring concrete, and removing the bottom template and the formwork support after the concrete is formed.
The existing bottom plate forming technology mainly has the following problems:
first, the formwork support is usually built for many horizontal poles, vertical pole and down tube to form, and the cabin space is narrower and small, and it is very difficult to accomplish the building of formwork support, and the erection time is also longer.
Secondly, the installation of the screen cold water pipes needs to be completed on site one by one, the number of the screen cold water pipes is large, the installation and welding space is limited, the screen cold water pipes are also related to the pressure test, acceptance check and other work, and the construction period is long.
And thirdly, the reinforcing steel bars are usually required to be provided with three layers, except for the bottom reinforcing steel bar, the middle layer reinforcing steel bar and the upper layer reinforcing steel bar are required to be installed alternately after the screen cold water pipe is installed and pressure test is completed, the screen cold water pipe is required to be protected in the installation process, the installation efficiency is low, and the construction period is long.
Therefore, how to improve the molding efficiency of the bottom plate of the nuclear reactor compartment by overcoming one of the above drawbacks is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a method for forming a nuclear reactor cabin skeleton mechanism, which is characterized by comprising the following steps of:
preparing a first discharging barrel section, a second discharging barrel section, a bottom layer embedded plate, a first rib component, a second rib component, a top layer embedded plate, a connecting component and a plurality of screen cold water pipes in advance;
assembling and fixing the first unloading barrel section, the bottom layer embedded plate and the first rib assembly to form a first pre-assembly module; assembling and fixing the second unloading barrel section, the top layer embedded plate and the second rib assembly to form a second pre-assembly module; assembling the screen cold water pipes to form a screen cold water pipe assembly; when the bottom cabin wall section of the nuclear reaction cabin is poured, the connecting assembly is fixed on the bottom cabin wall section;
firstly, supporting a bottom layer embedded plate of a first pre-installed module on the connecting assembly, then fixedly supporting the screen cold water pipe assembly on the first pre-installed module and fixing a second discharging barrel section of a second pre-installed module with a first discharging barrel section;
and pouring concrete on the bottom embedded plate, wherein the first preassembled module, the second preassembled module and the screen cold water pipe assembly form a concrete structure bottom plate layer structure through the concrete.
In the invention, a framework mechanism of a nuclear reactor cabin is assembled in advance to form three blocks: when a bottom plate structure of a nuclear reactor cabin is formed, a bottom pre-embedded plate in a first pre-embedded module can be supported on a bottom cabin wall section through the connecting assembly, then the screen cold water pipe assembly and a second pre-embedded module are supported on the first pre-embedded module, when concrete is poured, a supporting plate part of the bottom pre-embedded plate can be directly used as a bearing foundation of the concrete, and after the concrete is formed, partial pipe sections of the first pre-embedded module, the second pre-embedded module and the screen cold water pipe assembly are formed into an integrated structure with the concrete without dismounting any part.
In addition, the nuclear reactor cabin framework mechanism is assembled into three parts in advance, and the nuclear reactor cabin is in a modular design, so that the field building process of the nuclear reactor cabin is greatly simplified, and the building and forming efficiency is improved.
Optionally, coupling assembling includes annular section of thick bamboo section, and is fixed in the pre-buried anchor bar and the first annular horizontal support board of annular section of thick bamboo section outer wall and inner wall, coupling assembling is fixed in through following mode bottom deck wall section: when the bottom cabin wall section is poured by concrete, the embedded anchor bars are embedded in the concrete, and the first annular horizontal support plate is exposed outside the bottom cabin wall section.
Optionally, the annular support and the vertical support rod are prepared in advance, and the annular support and the vertical support rod are assembled to form a support assembly; and when the modules are assembled, the lower end of the vertical support rod of the support assembly is supported on the first pre-assembled module.
Optionally, the screen cold water pipe assembly is positioned and installed at a corresponding position of the first pre-installed module and the second pre-installed module, and before the screen cold water pipe assembly is positioned and installed at a corresponding position of the first pre-installed module and the second pre-installed module, a pressure test is performed on the screen cold water pipe.
Optionally, after the bottom pre-buried plate is supported on the first annular horizontal support plate of the connection assembly, a locking component is further used to fixedly connect the first annular horizontal support plate and the bottom pre-buried plate.
Optionally, before the concrete is poured on the bottom pre-embedded plate, the screen cold water header is fixed to the first pre-installed module and the vertical pipe section of the screen cold water pipe is fixed to the support assembly.
Optionally, after the concrete structure bottom plate layer is formed, concrete is poured on the bottom bulkhead section layer by layer to form a side wall of the nuclear reactor cabin, and meanwhile, the vertical pipe section of the cold water shielding pipe is pre-buried in the side wall.
In addition, the invention also provides a skeleton mechanism of the nuclear reactor cabin, which comprises a cold screen water pipe assembly, a connecting assembly and a skeleton module;
the framework module comprises a first pre-installed module and a second pre-installed module, wherein the first pre-installed module at least comprises a bottom layer pre-embedded plate and a first discharging barrel section which are fixedly connected; the bottom embedded plate comprises a supporting plate part which is positioned at the periphery of the first unloading barrel section and is used for supporting concrete in a pouring process, and the second pre-installed module at least comprises a top embedded plate and a second unloading barrel section which are fixedly connected; the first discharging barrel section and the second discharging barrel section are coaxially and fixedly connected to form a discharging barrel;
the screen cold water pipe assembly comprises a horizontal pipe section and a vertical pipe section which are assembled into a whole if the screen cold water pipe assembly is intervened; the screen cold water pipe assembly is supported on the first pre-installed module;
the connecting assembly is used for positioning the circumferential outer edge part of the bottom embedded plate on a pre-formed bottom cabin wall section of the nuclear reactor cabin.
Optionally, the system further comprises a first rib assembly and a second rib assembly, the first rib assembly, the bottom pre-embedded plate and the first unloading barrel section are fixedly connected to form the first pre-assembly module, the second unloading barrel section, the top pre-embedded plate and the second rib assembly are fixedly connected to form the second pre-assembly module, and the first unloading barrel section and the second unloading barrel section are fixedly connected to connect the pre-assembled first pre-assembly module and the second pre-assembly module to form a whole; at least part of the transverse pipe section of the screen cold water pipe assembly is supported on the first rib assembly or the second rib assembly.
Optionally, the first rib assembly includes a plurality of first radial ribs and a plurality of second radial ribs arranged in the radial direction, the inner end of each first radial rib is fixedly connected to the outer peripheral wall of the first discharge barrel section, each second radial rib is located at the periphery of each first radial rib, each first radial rib and each second radial rib are arranged at intervals in the circumferential direction, and the width of each second radial rib is greater than the width of each first radial rib.
Optionally, the first rib assembly further includes a first annular rib and a second annular rib, both of which are fixed to the upper surface of the bottom pre-buried plate, the second annular rib is located at the periphery of the first annular rib, the outer end of the first radial rib is fixed to the inner annular wall of the first annular rib, the inner end of the second radial rib is fixed to the outer annular wall of the first annular rib, and the outer end of the second radial rib is fixed to the second annular rib.
Optionally, part of the second radial rib includes an outer end section extending beyond the second annular rib, the outer end section is provided with lifting lugs, and the lifting lugs are uniformly arranged along the circumferential direction; and the outer end part is also provided with a fixed seat for connecting and fixing the bottom end of the vertical supporting rod of the cold water pipe assembly of the auxiliary supporting screen.
Optionally, the second annular rib includes a plurality of relatively independent annular segments, and each annular segment is welded between adjacent second radial ribs.
Optionally, the second rib assembly includes a plurality of third radial ribs and at least one third annular rib, the annular rib is fixedly connected to all the third radial ribs, and during assembly, the outer edges of the third radial ribs are supported and fixed to the bottom-layer embedded plate and the second annular rib.
Optionally, the connecting assembly includes an annular cylinder section, an outer annular wall of the annular cylinder section is fixedly connected with a plurality of pre-buried anchor bars for being fixedly combined with the bulkhead section, and an inner annular wall of the annular cylinder section includes a first annular horizontal support plate extending inwards for supporting an outer edge of the bottom pre-buried plate.
Optionally, the connecting assembly further includes a locking component for locking the positions of the first annular horizontal supporting plate and the bottom layer embedded plate;
or/and the inner annular wall of the annular cylinder section is also provided with a plurality of ribbed plates which are arranged at intervals along the circumferential direction;
or/and the device also comprises an annular vertical plate, wherein the annular vertical plate is fixed at the inner edge of each first annular horizontal supporting plate;
or/and the second annular horizontal support plate is arranged in parallel with the first annular horizontal support plate and is close to the lower end face of the annular cylinder section.
In addition, the invention also provides a nuclear reactor cabin, which comprises the framework mechanism of the nuclear reactor cabin, wherein concrete is poured on the bottom pre-buried plate through a concrete pouring process, so that parts and components below the top pre-buried plate form a bottom plate structure together with the concrete, the upper surface of the top pre-buried plate is exposed out of the concrete, and the vertical pipe sections of the cold water screen pipe assembly are at least partially positioned out of the bottom plate structure;
or by the molding method of the nuclear reactor space skeleton mechanism described in any one of the above.
Optionally, the screen cooling water pipe assembly further comprises at least one annular supporting piece and at least one vertical supporting rod, each vertical pipe section of the screen cooling water pipe assembly is supported and fixed on the annular supporting piece together, each annular supporting piece is arranged at intervals along the vertical direction, the lower end of each vertical supporting rod is embedded in the bottom plate structure, and each annular supporting piece is fixedly supported on the vertical supporting rod.
The nuclear reactor compartment is formed by the method of forming the nuclear reactor compartment skeleton means or includes the above-described skeleton means, and therefore the nuclear reactor compartment also has the above-described technical effects of the nuclear reactor compartment skeleton means and the method of forming the same.
Drawings
FIG. 1 is a flow chart illustrating a method for forming a nuclear reactor nacelle framework according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the assembled first and second pre-assembled modules of one embodiment of the present invention;
FIG. 3 is a schematic illustration of a nuclear reactor cabin skeleton module according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a connecting assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of a cold water shield assembly according to an embodiment of the present invention;
FIG. 6 is an assembly schematic of an annular support member and vertical support rod for supporting a screen chilled water tube assembly in one embodiment of the invention.
Wherein, in fig. 2 to 6:
1 top layer embedded plate, 2 discharge pipes, 3 third radial ribs, 4 screens of cold water pipe supporting plates, 5 first radial rib plates, 6 first annular rib plates, 7 second radial rib plates, 71 outer end sections, 7' second annular rib plates, 8 screens of cold water headers, 9 bottom layer embedded plates, 21 screens of cold water headers, 22 screens of cold water headers, 221 vertical pipe sections, 222 horizontal pipe sections, 23 screens of cold water inlet pipes, 31 annular supporting pieces and 32 vertical supporting rods;
41 a first annular horizontal supporting plate, 42 a second annular horizontal supporting plate, 43 ribbed plates, 44 annular vertical plates, 45 annular cylinder sections, 46 pre-buried anchor bars and 51 locking components.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the structures, methods, drawings, and specific examples.
Referring to fig. 1 to 6, fig. 1 is a flow chart illustrating a method for forming a nuclear reactor cabin skeleton mechanism according to an embodiment of the present invention; FIG. 2 is a schematic view of the assembled first and second pre-assembled modules of one embodiment of the present invention; FIG. 3 is a schematic structural diagram of a nuclear reactor compartment skeleton module according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a connecting assembly according to an embodiment of the present invention; FIG. 5 is a schematic view of a cold water shield assembly according to an embodiment of the present invention; FIG. 6 is an assembly schematic of an annular support member and vertical support rod for supporting a screen chilled water tube assembly in one embodiment of the invention.
The invention provides a molding method of a nuclear reactor cabin skeleton mechanism, which comprises the following steps:
s1, preparing a first discharging barrel section, a second discharging barrel section, a bottom layer embedded plate 9, a top layer embedded plate 1, a connecting assembly and a plurality of screen cold water pipes 22 in advance;
that is, the background art discharge shaft is herein processed into a monolithic structure that includes a first discharge shaft section and a second discharge shaft section. The first and second discharge drum sections are not specifically indicated in the figures, but do not hinder the understanding and implementation of the solution herein by the person skilled in the art. The first rib component and the second rib component can comprise a plurality of rib plates with different structures, the shape of each rib plate can be determined according to the installation and use environment, and each rib plate can be a steel plate.
S2, assembling and fixing the first discharging barrel section and the bottom layer embedded plate 9 to form a first pre-assembled module; assembling and fixing the second discharging barrel section and the top layer embedded plate 1 to form a second pre-assembly module; assembling the screen cold water pipes to form a screen cold water pipe assembly; when the bottom cabin wall section of the nuclear reaction cabin is poured, the connecting assembly is fixed on the bottom cabin wall section;
the bottom-layer embedded plate 9 is fixedly connected to the bottom wall of the first unloading barrel section, and rib plates in the first rib assembly are fixedly installed on the outer wall of the first unloading barrel section or the bottom-layer embedded plate 9 is located on a supporting plate part on the periphery of the first unloading barrel section.
The top layer embedded plate 1 is fixed at the top of the second unloading barrel section, and each rib plate of the second rib assembly is fixed on the outer wall of the second unloading barrel section or the bottom wall of the top layer embedded plate 1.
Each screen cold water pipe 22 may include a horizontal pipe section 222 and a vertical pipe section 221, and the two pipe sections may be welded to form a complete screen cold water pipe 22.
That is to say, the framework module comprises a first pre-installation module and a second pre-installation module, wherein the first pre-installation module at least comprises a bottom pre-embedded plate 9 and a first discharging barrel section, and the second pre-installation module at least comprises a top pre-embedded plate 1 and a second discharging barrel section.
S3, supporting the bottom-layer embedded plate 9 of the first pre-installed module on the connecting assembly, fixedly supporting the screen cold water pipe assembly on the first pre-installed module, and fixing the second discharging barrel section of the second pre-installed module with the first discharging barrel section;
namely, after the first pre-installed module and the second pre-installed module are formed by assembling the corresponding parts, the first pre-installed module is installed on the bottom deck section which is already poured, namely, the bottom pre-embedded plate 9 of the first pre-installed module is supported on the connecting assembly, wherein the connecting assembly is positioned with the bottom deck wall section when the bottom deck section is formed, namely, the bottom deck section supports the connecting assembly, and the bottom pre-embedded plate 9 is indirectly supported on the bottom deck section through the connecting assembly. And then fixedly supporting the screen cold water pipe assembly on the first pre-assembly module, and finally, coaxially and fixedly connecting the second discharging barrel section of the second pre-assembly module with the first discharging barrel section.
S4, concrete is poured on the bottom pre-embedded plate 9, and the first pre-installed module, the second pre-installed module and the screen cold water pipe assembly are partially pre-embedded in the concrete to form a bottom plate structure.
The framework mechanism of the nuclear reactor cabin is assembled in advance to form three major parts: when a bottom plate structure of a nuclear reactor cabin is formed, a bottom pre-embedded plate in a first pre-embedded module can be supported on a bottom cabin wall section through the connecting assembly, then the screen cold water pipe assembly and a second pre-embedded module are supported on the first pre-embedded module, when concrete is poured, a supporting plate part of the bottom pre-embedded plate can be directly used as a bearing foundation of the concrete, and after the concrete is formed, partial pipe sections of the first pre-embedded module, the second pre-embedded module and the screen cold water pipe assembly are formed into an integrated structure with the concrete without dismounting any part.
In addition, the nuclear reactor cabin framework mechanism is assembled into three parts in advance, and the nuclear reactor cabin is in a modular design, so that the field building process of the nuclear reactor cabin is greatly simplified, and the building and forming efficiency is improved. And the cold water pipe assembly of the screen in the nuclear reactor cabin can be assembled on the framework module after being preassembled and completing a pressure test experiment, so that the construction time of the nuclear reactor cabin can be greatly shortened.
That is, the skeleton module in the present invention includes three modules before installation: the screen cold water pipe assembly comprises a first pre-installation module, a second pre-installation module and a screen cold water pipe assembly, wherein the first pre-installation module, the second pre-installation module and the screen cold water pipe assembly can be assembled at other assembly stations, then the three parts are fixedly connected, of course, the first pre-installation module can be supported and positioned on the lower cabin wall section through a connecting assembly, then the screen cold water pipe assembly and the second pre-installation module are fixed on the first pre-installation module, and of course, the integrated structure can be positioned on the cabin wall section through the connecting assembly after the first pre-installation module and the second pre-installation module are fixedly connected into a whole.
In the above embodiment, the framework module is divided into three relatively independent modules, each module can be pre-assembled respectively, the modules are assembled without mutual interference, and the assembled modules are assembled to form a whole, so that the molding efficiency of the framework module can be greatly improved.
The vertical pipe section of the screen cold water pipe is long in length, and in order to improve the installation stability of the screen cold water pipe and avoid damage to the screen cold water pipe, the following operations can be performed.
The screen cold water pipe assembly comprises a plurality of horizontal pipe sections 222 and vertical pipe sections 221 which are preassembled into a whole; the screen cold water tube assembly is supported on the first pre-assembly module. When forming the floor layer structure, the transverse pipe sections 222 are formed inside the concrete.
The nuclear reactor cabin framework mechanism further comprises a first rib component and a second rib component, each of the first rib component and the second rib component comprises a plurality of rib components, the first rib component, the bottom layer embedded plate 9 and the first unloading barrel section are fixedly connected to form a first pre-installation module, and the top layer embedded plate, the second rib component and the second unloading barrel section are fixedly formed into a second pre-installation module.
Each rib part can be fixed on at least one of the bottom pre-buried plate 9 or the top pre-buried plate 1 or the corresponding discharging barrel section through welding or other process means, namely at least one of the bottom pre-buried plate 9, the top pre-buried plate 1 or the discharging barrel 2 can provide a fixing base for installing the rib part.
Each part in the framework mechanism can be a steel structural part, and the using strength is relatively high.
During concrete placement, each rib part of first rib subassembly and second rib subassembly is combined inside the concrete, is overall structure with the common shaping of concrete, can improve floor structure's bearing capacity greatly to stripper, rib part and top layer pre-buried board 1 can be fixed in and form the skeleton module on the pre-buried board 9 of bottom, compare prior art and build steel bar structure on the die block board, and save time, laborsaving can further promote nuclear reactor cabin shaping efficiency.
In the above embodiments, the framework mechanism includes the first rib assembly including the first radial ribs 5 and the second radial ribs 7, which are radially arranged, the inner end of each first radial rib 5 is fixedly connected to the outer peripheral wall of the first discharge barrel section, each second radial rib 7 is located at the periphery of each first radial rib 5, each first radial rib 5 and each second radial rib 7 are circumferentially arranged at intervals, wherein the shape and the circumferential arrangement position of each first radial rib 5 and each second radial rib 7 can be considered comprehensively by combining the arrangement form of the cold water pipes 22, and interference between the first radial rib 5 and the cold water pipes 22 and between the second radial ribs 7 and the cold water pipes 22 is avoided.
As described above, each screen cold water pipe 22 of the screen cold water pipe assembly includes the horizontal pipe section 222 and the vertical pipe section 221 which are communicated, the inner end of each horizontal pipe section 222 is communicated with the screen cold water header 21 located at the periphery of the discharge cylinder, the outer end of each horizontal pipe section is extended outward in the radial direction to be communicated with the vertical pipe section 221, the horizontal pipe section 222 is pre-embedded in the concrete of the floor structure, and the vertical pipe section 221 is pre-embedded in the side wall of the reactor cabin.
The screen cold water pipe 22 is connected with a screen cold water inlet pipe 23.
Namely, after the concrete structure bottom plate layer is formed, concrete is poured on the bottom bulkhead section layer by layer to form the side wall of the nuclear reactor cabin, and meanwhile, the vertical pipe section of the cold water shielding water pipe is pre-buried in the side wall.
The first radial rib 5 and the second radial rib 7 which are relatively independent are arranged along the radial direction, so that the flexibility of rib arrangement can be improved, and the rib is prevented from being inconvenient to install due to overlarge size and being interfered with other ribs due to too dense arrangement.
The closer to the discharge drum the smaller the spacing between the transverse sections of the cold water pipes of the screens, i.e. the further from the discharge drum the greater the spacing between adjacent transverse sections, so that the width of the second radial ribs 7 in the above described embodiment may be greater than the width of the first radial ribs 5. Thus increasing the strength of the concrete structure after forming to a certain extent.
Specifically, the first rib assembly can further include a first annular rib 6 and a second annular rib 7 ', which are both fixed on the upper surface of the bottom-layer embedded plate 9, the second annular rib 7 ' is located on the periphery of the first annular rib 6, the outer end of the first radial rib 5 is fixed on the inner annular wall of the first annular rib 6, the inner end of the second radial rib 7 is fixed on the outer annular wall of the first annular rib 6, and the outer end of the second radial rib 7 is fixed on the second annular rib 7 '.
In the above embodiment, the first rib assembly includes the radial rib and the annular rib that are connected to each other, so that the strength of the formed concrete structure is greatly improved.
Both the first annular rib 6 and the second annular rib 7' can be complete annular structures, and can also be annular sections, and can be flexibly arranged according to the use environment.
In order to facilitate the mounting of the first pre-assembled module, part of the second radial ribs 7 comprises an outer end section extending beyond the second annular rib 7', the outer end section being provided with a lifting lug for engaging with an external hoisting device for hanging. When hoisting, only the lifting hook of the external hoisting equipment is hung on the lifting lug on part of the second radial rib 7, and the hoisting of the first pre-installed module can be realized.
Of course, in order to increase the hoisting stability, the lifting lugs may be uniformly arranged in the circumferential direction.
Further, in a particular embodiment, the second annular rib 7' comprises a plurality of relatively independent annular segments, each of which is welded between adjacent second radial ribs 7; in the above embodiment, the second annular rib 7 'is divided into a plurality of annular segments, so that the forming difficulty of the second annular rib 7' can be reduced, and the installation and transportation are convenient.
The screen cold water headers 21 need to be pre-buried inside the floor structure, so before the floor structure is poured with concrete, the screen cold water headers 21 need to be positioned inside the concrete pouring cavity.
Therefore, the support plate 8 for supporting the shield cold water header 21 is further provided in each of the above embodiments to increase the reliability of positioning and support of the shield cold water header 21.
Similarly, the second rib assembly also comprises a plurality of third radial ribs 3 and at least one third annular rib, the third annular rib is fixedly connected with all the third radial ribs 3, and the outer edges of the third radial ribs 3 are respectively supported and fixed on the first annular rib 6 and the second annular rib 7' during assembly.
Like this, third radial rib 3 and third annular rib can play the reinforcing action to the upper portion of floor structure to the first section of thick bamboo of unloading section of thick bamboo supports the tip fixed stay in the radial rib 3 of third, and first annular rib 6 and second annular rib 7' support the outer tip of the radial rib 3 of third, and the radial rib 3 installation stability of third is than higher, is favorable to forming stable structure.
In addition, the third annular rib may form the screen cold water pipe support plate 4, and at the same time, serves to support the screen cold water pipe.
Wherein the second annular rib 7' and the second radial rib 7 may be of the same structural form, for example both may be of T-bar construction. This can reduce the number of parts forming the frame mechanism as much as possible.
In the above embodiments, the connection assembly may include an annular cylinder section 45, the outer annular wall of the annular cylinder section 45 is fixedly connected with a plurality of embedded anchor bars 46 for being fixedly connected with the bulkhead section, and all the embedded anchor bars 46 are embedded inside the concrete of the bulkhead section. The inner annular wall of the annular cylinder section 45 includes a first annular horizontal support plate 41 extending inwardly for supporting the outer edge of the underlying embedment plate 9.
Further, the connecting assembly also comprises a locking part 51 for locking the positions of the first horizontal supporting plate 41 and the bottom pre-buried plate 9; the locking component 51 may be a bolt, a screw, a stud or the like, as long as relative fixation between the bottom-layer embedded plate 9 and the first horizontal support plate 41 can be achieved.
That is, after the bottom built-in panel is supported on the first annular horizontal support plate of the connecting assembly in the molding process, the first annular horizontal support plate 41 and the bottom built-in panel 2 are also fixedly connected using the locking member 51.
In the above embodiments, the inner annular wall of the annular cylinder section 45 is further provided with a plurality of ribs 43, and the ribs are arranged at intervals along the circumferential direction.
Or/and further comprises an annular vertical plate 44, wherein the annular vertical plate 44 is fixed on the inner edge of each first annular horizontal supporting plate 41;
or/and a second annular horizontal support plate 42 which is arranged in parallel with the first annular horizontal support plate 41 and is close to the lower end face of the annular cylinder section 45.
Through above mode, the joint strength of coupling assembling has been strengthened greatly.
Each part forming the skeletal mechanism may be of steel construction.
In addition, the invention also provides a nuclear reactor cabin, which comprises the framework mechanism of the nuclear reactor cabin, the framework mechanism of the nuclear reactor cabin is obtained by pouring concrete on the bottom pre-buried plate 9 through a concrete pouring process, so that parts and concrete below the top pre-buried plate form a bottom plate structure, the upper surface of the top pre-buried plate 1 is exposed out of the concrete, and at least part of the vertical pipe section 221 of the cold water screen pipe assembly is positioned out of the bottom plate structure.
The invention also provides a nuclear reactor cabin which is formed by the forming method of any one of the framework mechanisms.
Further, the nuclear reactor compartment may further comprise at least one annular support member 31 and at least one vertical support rod 32, the annular support member 31 and the vertical support rod 32 being assembled to form a support assembly, the modules being assembled to support the lower end of the vertical support rod of the support assembly on the first pre-assembled module.
The vertical pipe sections 221 of the screen cold water pipe assembly are supported and fixed on the annular supporting pieces 31 together, the annular supporting pieces 31 are arranged at intervals in the vertical direction, the lower ends of the vertical supporting rods 32 are embedded in the bottom plate structure, and the annular supporting pieces 31 are fixedly supported on the vertical supporting rods 32.
In addition, in each forming method, before the screen cold water pipe assembly is positioned and installed at the corresponding position of the first pre-installed module and the second pre-installed module, the screen cold water pipe is subjected to pressure test.
Specifically, the outer end section 71 of the partial second radial rib 7 provided with the lifting lug may further be provided with a fixing seat for connecting and fixing with the bottom end of the vertical support rod 32 of the auxiliary support screen cold water pipe assembly.
Since the nuclear reactor compartment includes the above-described skeleton mechanism, the nuclear reactor compartment also has the above-described technical effects of the skeleton mechanism. The nuclear reactor compartment is formed by the method for forming the nuclear reactor compartment skeleton means, and therefore the nuclear reactor compartment also has the technical effects of the method for forming the nuclear reactor compartment skeleton means.
The present invention provides a nuclear reactor cabin, a framework mechanism and a forming method thereof. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (13)

1. A method for forming a nuclear reactor cabin skeleton mechanism is characterized by comprising the following steps:
preparing a first discharging barrel section, a second discharging barrel section, a bottom embedded plate, a top embedded plate, a connecting assembly and a plurality of screen cold water pipes in advance;
assembling and fixing the first unloading barrel section and the bottom layer embedded plate to form a first pre-assembly module; assembling and fixing the second discharging barrel section and the top layer embedded plate to form a second pre-assembly module; assembling the screen cold water pipes to form a screen cold water pipe assembly; when the bottom cabin wall section of the nuclear reaction cabin is poured, the connecting assembly is fixed on the bottom cabin wall section;
firstly, supporting a bottom layer embedded plate of a first pre-installed module on the connecting assembly, then fixedly supporting the screen cold water pipe assembly on the first pre-installed module and fixing a second discharging barrel section of a second pre-installed module with a first discharging barrel section;
and pouring concrete on the bottom embedded plate, wherein the first preassembled module, the second preassembled module and the screen cold water pipe assembly form a concrete structure bottom plate layer structure through the concrete.
2. The method of forming a nuclear reactor bulkhead assembly of claim 1, wherein the connecting assembly comprises an annular barrel section, and embedded anchor bars and a first annular horizontal support plate secured to an outer wall and an inner wall of the annular barrel section, the connecting assembly secured to the underlying bulkhead section by: when the bottom cabin wall section is poured by concrete, the embedded anchor bars are embedded in the concrete, and the first annular horizontal support plate is exposed outside the bottom cabin wall section.
3. The method of forming a nuclear reactor bulkhead frame assembly of claim 1, further comprising preparing the ring support and the vertical support rod in advance, and assembling the ring support and the vertical support rod to form a support assembly;
when the modules are assembled, the lower end of the vertical support rod of the support assembly is supported on the first pre-assembled module;
or/and the screen cold water pipe assembly is subjected to pressure test before being positioned and installed at corresponding positions of the first pre-installed module and the second pre-installed module.
4. The method of forming a nuclear reactor nacelle skeleton assembly of any of claims 1 to 3, wherein the bottom embedment plate is supported on the first annular horizontal support plate of the connection assembly, and then the first annular horizontal support plate and the bottom embedment plate are fixedly connected by using a locking member;
or/and before concrete is poured on the bottom pre-embedded plate, fixing the screen cold water header to the first pre-installed module and fixing the vertical pipe section of the screen cold water pipe to the support assembly;
or/and after the concrete structure bottom plate layer is formed, pouring concrete on the bottom bulkhead section layer by layer to form the side wall of the nuclear reactor cabin, and meanwhile, pre-burying the vertical pipe section of the screen cold water pipe in the side wall.
5. The skeleton mechanism of the nuclear reactor cabin is characterized by comprising a cold water screen water pipe assembly, a connecting assembly and a skeleton module;
the framework module comprises a first pre-installed module and a second pre-installed module, wherein the first pre-installed module at least comprises a bottom layer pre-embedded plate and a first discharging barrel section which are fixedly connected; the bottom embedded plate comprises a supporting plate part which is positioned at the periphery of the first unloading barrel section and is used for supporting concrete in a pouring process, and the second pre-installed module at least comprises a top embedded plate and a second unloading barrel section which are fixedly connected; the first discharging barrel section and the second discharging barrel section are coaxially and fixedly connected to form a discharging barrel;
the screen cold water pipe assembly comprises a horizontal pipe section and a vertical pipe section which are assembled into a whole if the screen cold water pipe assembly is intervened; the screen cold water pipe assembly is supported on the first pre-installed module;
the connecting assembly is used for positioning the circumferential outer edge part of the supporting plate part of the bottom embedded plate on the pre-formed bottom cabin wall section of the nuclear reactor cabin.
6. The nuclear reactor bay backbone mechanism of claim 5, further comprising a first rib assembly and a second rib assembly, wherein said first rib assembly, said bottom embedment plate and said first dump barrel section are fixedly attached to form said first pre-assembly module, wherein said second dump barrel section, said top embedment plate and said second rib assembly are fixedly attached to form said second pre-assembly module, and wherein said first dump barrel section and said second dump barrel section are fixedly attached to integrally attach said pre-assembly first pre-assembly module to said second pre-assembly module; at least part of the transverse pipe section of the screen cold water pipe assembly is supported on the first rib assembly or the second rib assembly.
7. The nuclear reactor bay backbone mechanism of claim 6, wherein said first rib assembly includes a plurality of first radial ribs and a plurality of second radial ribs arranged radially, each of said first radial ribs having an inner end fixedly attached to said outer peripheral wall of said first dump barrel section, each of said second radial ribs being located peripherally of each of said first radial ribs, each of said first radial ribs and each of said second radial ribs being circumferentially spaced apart, said second radial ribs having a width greater than a width of said first radial ribs;
or/and the second rib assembly comprises a plurality of third radial ribs and at least one third annular rib, the third annular rib is fixedly connected with all the third radial ribs, and in the assembling process, the outer edges of the third radial ribs are supported and fixed on the bottom layer embedded plate and the second annular rib.
8. The nuclear reactor bay framework of claim 7, wherein the first rib assembly further comprises a first annular rib and a second annular rib, each of which is fixed to the upper surface of the bottom embedment plate, the second annular rib is located at the periphery of the first annular rib, the outer end of the first radial rib is fixed to the inner annular wall of the first annular rib, the inner end of the second radial rib is fixed to the outer annular wall of the first annular rib, and the outer end of the second radial rib is fixed to the second annular rib.
9. The nuclear reactor nacelle skeletal assembly of claim 8, wherein a portion of the second radial rib includes an outer end segment extending beyond the second annular rib, the outer end segment being provided with lifting lugs, and the lifting lugs being evenly circumferentially arranged; the outer end part is also provided with a fixed seat which is used for being connected and fixed with the bottom end of a vertical supporting rod of the cold water pipe assembly of the auxiliary supporting screen;
or/and the second annular rib comprises a plurality of relatively independent annular sections, and each annular section is welded between the adjacent second radial ribs.
10. The framing mechanism of any one of claims 5 to 9, wherein the connecting assembly comprises an annular cylindrical section, the outer annular wall of the annular cylindrical section having a plurality of pre-embedded anchor bars fixedly secured thereto for fixedly engaging the bulkhead section, and the inner annular wall of the annular cylindrical section having a first annular horizontal support plate extending inwardly for supporting the outer edge of the bottom pre-embedded plate.
11. The nuclear reactor bay backbone mechanism of claim 10, wherein said connection assembly further comprises a locking member for locking the position of said first annular horizontal support plate and said bottom pre-buried plate;
or/and the inner annular wall of the annular cylinder section is also provided with a plurality of ribbed plates which are arranged at intervals along the circumferential direction;
or/and the device also comprises an annular vertical plate), wherein the annular vertical plate) is fixed at the inner edge of each first annular horizontal supporting plate;
or/and the second annular horizontal support plate is arranged in parallel with the first annular horizontal support plate and is close to the lower end face of the annular cylinder section.
12. A nuclear reactor nacelle comprising the nuclear reactor nacelle skeleton assembly of any of claims 5-11, wherein the concrete is poured onto the bottom embedment plate by a concrete pouring process, such that the components and parts below the top embedment plate form a bottom plate structure with the concrete, wherein the upper surface of the top embedment plate is exposed out of the concrete, and wherein the vertical pipe sections of the cold water screen assembly are at least partially outside the bottom plate structure;
or by the method of molding a nuclear reactor space skeleton structure according to any one of claims 1 to 4.
13. The nuclear reactor compartment of claim 12 further comprising at least one annular support member and at least one vertical support rod, wherein the vertical tube segments of the screen cold water tube assembly are jointly supported and secured to the annular support member, wherein the annular support members are vertically spaced apart, wherein the lower end of each vertical support rod is pre-embedded in the floor structure, and wherein the annular support members are fixedly secured to the vertical support rod.
CN202110845821.5A 2021-07-26 2021-07-26 Nuclear reactor cabin, framework mechanism and forming method thereof Active CN113482144B (en)

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