A positioning template tool for embedded plates of nuclear power safety containers

Abstract

The present invention discloses a positioning template tooling for embedded plates of nuclear power safety containers, comprising: an inner ring placement seat and an annular outer ring connecting seat arranged at intervals inside and outside, the outer ring connecting seat and the inner ring placement seat being detachably connected via a plurality of connecting rods arranged at intervals in the circumferential direction, the outer ring connecting seat being provided with a plurality of positioning connecting through holes which can respectively cooperate with the embedded through holes on each embedded unit plate in the upper and lower directions; after the outer ring connecting seat and the inner ring placement seat are connected by the plurality of connecting rods to form the positioning template tooling, the outer ring connecting seat and the inner ring placement seat cooperate to form a flush placement surface for stably placing each embedded unit plate, and then the embedded unit plates which are circumferentially flush placed on the flush placement surface and detachably connected to the positioning template tooling via the embedded bolts and the positioning connecting through holes are welded to form the embedded plate, so that the embedded plate welded by the positioning template tooling can meet the technical requirements of on-site assembly welding.

Description

Technical Field

[0001] The present invention relates to the technical field of safety containers in nuclear power plants, and in particular to a positioning template tool for positioning an embedded plate of an intermediate plate in the safety container. Background Art

[0002] For a long time, nuclear power plants have primarily used pressurized water reactors (PWRs) fueled by uranium-235 (U-235). These reactors use water as a coolant. These reactors employ a composite fluoride salt coolant. The containment vessel (FC) houses the reactor body and all equipment in the fuel-salt system of a thorium-based molten salt reactor (MSR) nuclear energy system. Its design is based on gas leak protection: in the event of an accident, it must isolate unacceptable radioactive materials from the environment and fulfill its safety function of preventing the spread of radioactive materials. Therefore, the containment vessel has strict sealing requirements. The containment vessel consists of an upper containment vessel, a lower containment vessel, and accessories. The upper containment vessel is a steel cylinder; the lower containment vessel is lined with concrete steel. An intermediate plate is installed between the upper and lower containments. To position and install the intermediate plate, an embedded plate is embedded in the lower containment vessel below the intermediate plate. Because the upper containment vessel is a steel cylinder, shielding steel plates are required around the perimeter to reduce radiation damage. These shielding plates include an outer shielding ring plate and an inner shielding ring plate, spaced from the inside out.

[0003] In actual manufacturing, Figure 8 、 Figure 9 、 Figure 10 、 Figure 11As shown, the outer diameter of the middle plate 1 is φ7550mm, the plate thickness is 150mm, the outer diameter of the embedded plate 2 is φ7300mm, the plate thickness is 20mm, the outer diameter of the shielded outer ring plate 3 is φ7550mm, the plate thickness is 150mm, the outer diameter of the shielded inner ring plate 4 is φ5940mm, the plate thickness is 150mm, the shielded inner ring plate 3 and the shielded outer ring plate 4 are arranged on the middle plate 1 and are detachably connected to the middle plate 1, and the middle plate 1 is arranged on the embedded plate 2 and is detachably connected to the embedded plate 2 by embedded bolts. Due to the large diameters and thickness of the intermediate plate 1, embedded plate 2, shielded outer ring plate 3, and shielded inner ring plate 4, to facilitate manufacturing, transportation, and installation, these plates were divided into several sections and transported to the project site for assembly welding. The technical requirements for on-site assembly welding are as follows: 1. The flatness of the upper and lower surfaces of the intermediate plate 1, shielded outer ring plate 3, and shielded inner ring plate 4 after on-site assembly and welding is less than 5mm; 2. The diameter tolerance of the intermediate plate 1, shielded outer ring plate 3, and shielded inner ring plate 4 after on-site assembly is ±2mm; 3. The diameter tolerance of the bolt holes after on-site installation is ±2mm, and the hole spacing tolerance is ±1mm. Typically, the embedded plate 2, shielded outer ring plate 3, and shielded inner ring plate 4 are circumferentially divided into several unit sections. The intermediate plate 1 includes a central intermediate plate 11 for connecting to the equipment in the upper containment vessel, an intermediate outer ring plate 12 surrounding the central intermediate plate 11, and an intermediate outer ring plate 12 circumferentially divided into several intermediate arc plates 121. Since the middle plate 1 is formed by welding after positioning through the embedded plate 2, and the shielding outer ring plate 3 and the shielding inner ring plate 4 are formed by positioning through the welded middle plate 1, it is required that the embedded plate 2 after on-site welding and the embedded bolts 21 that pass through the embedded through holes on the embedded plate 2 and are used to connect to the middle plate 1 must meet the above-mentioned on-site welding technical requirements after embedding. Subsequently, the embedded plate 2 and the embedded bolts 21 can be used to directly or indirectly position the middle plate 1, the shielding outer ring plate 3, and the shielding inner ring plate 4, so that the welded middle plate 1, the shielding outer ring plate 3, and the shielding inner ring plate 4 meet the on-site welding technical requirements. It can be seen that the welded embedded plate 2 meeting the on-site welding technical requirements is a prerequisite for manufacturing qualified middle plates 1, shielding outer ring plates 3, and shielding inner ring plates 4. For the sake of convenience, the embedded plate 2 is divided into several pieces in the circumferential direction and is called embedded unit plates. Since the embedded plate 2 has a large diameter and thickness, and is formed by welding together several embedded unit plates, the current direct welding method will cause large welding deformation, so that the embedded plate 2 formed after direct welding cannot meet the above-mentioned on-site welding technical requirements, resulting in the on-site welded intermediate plate 1, shielding outer ring plate 3, and shielding inner ring plate 4 that are directly or indirectly positioned by the embedded plate 2 also finding it difficult to meet the on-site welding technical requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning template tool for the embedded plate of a nuclear power safety container, which can ensure that the embedded plate after welding meets the technical requirements of on-site welding.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a positioning template tooling for the embedded plate of the nuclear power safety container, comprising: an inner ring placement seat and an annular outer ring connecting seat arranged at intervals inside and outside, the outer ring connecting seat and the inner ring placement seat are detachably connected by a plurality of connecting rods arranged at intervals in the circumferential direction, and the outer ring connecting seat is provided with a plurality of positioning connecting through holes which can respectively cooperate with the embedded through holes on each embedded unit plate; the structure of the outer ring connecting seat and the inner ring placement seat and the number and position of the connecting rods meet the following requirements: the outer ring connecting seat and the inner ring placement seat are connected by a plurality of connecting rods to form a positioning template After the plate is installed, the outer ring connecting seat and the inner ring placing seat cooperate to form a flush placing surface for stably placing each embedded unit plate, so that each embedded unit plate can be placed circumferentially flush on the flush placing surface, and then each embedded bolt can pass through the corresponding embedded through hole on each embedded unit plate and the corresponding positioning connection through hole on the outer ring connecting seat respectively, so that each embedded unit plate can be positioned and detachably connected to the positioning template tooling, and then the embedded unit plates that are circumferentially flush placed on the flush placing surface and detachably connected to the positioning template tooling are welded to form an embedded plate, so that the welded embedded plate can meet the on-site assembly welding technical requirements.

[0006] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: the outer ring connecting seat includes: an inner ring plate and an outer ring plate arranged vertically inward and outward at intervals, the inner ring plate and the outer ring plate have the same height, the bottom of the inner ring plate and the outer ring plate are fixedly connected by a bottom plate ring, the bottom plate ring is formed by circumferential splicing of several bottom arc plates, the number of bottom arc plates is the same as the number of embedded unit plates, each bottom arc plate is provided with a number of bottom arc through holes, the number of which is the same as the number of embedded through holes on the corresponding embedded unit plate, and can respectively cooperate with the embedded through holes on the embedded unit plate up and down, a guide mechanism for constraining the direction of the embedded bolts is also provided between the inner ring plate and the outer ring plate, so that each bottom arc through hole can be conveniently and quickly connected with the corresponding embedded through hole up and down through the embedded bolts.

[0007] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: the guide mechanism includes: a guide plate is arranged between the inner ring plate and the outer ring plate above each bottom arc through hole, the guide plate is parallel to the bottom arc plate, and a guide through hole is arranged on the guide plate opposite to the bottom arc through hole up and down, and a vertical guide tube is arranged between the guide plate and the bottom arc plate; the corresponding guide through holes, guide tubes, and bottom arc through holes cooperate to form a positioning connecting through hole.

[0008] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: connecting angle steels are respectively provided at both ends of each bottom arc plate, the inner and outer ends of each connecting angle steel are respectively fixed to the inner ring plate and the outer ring plate, and the two adjacent bottom arc plates are connected by connecting angle steel bolts.

[0009] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: the vertical cross-section of the inner ring placement seat is "H"-shaped, including: a circular positioning plate and a number of connecting plates fixed on the side wall of the circular positioning plate at circumferential intervals and placed vertically, the number of connecting plates is the same as the number of connecting rods; the top end of each connecting plate cooperates with the top end of the inner ring plate and the top end of the outer ring plate to form a flush placement surface.

[0010] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: each connecting rod includes: a connecting pipe, and a mounting plate is respectively provided at the inner and outer ends of the connecting pipe; the mounting plate at the inner end of each connecting pipe is connected to the inner ring placement seat bolt, and the mounting plate at the outer end of each connecting pipe is connected to the annular outer ring connecting seat bolt.

[0011] Furthermore, in the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, a plurality of marking holes are circumferentially arranged on the inner ring placement seat to facilitate the installation of each connecting rod, and the number of the marking holes is the same as the number of the connecting rods; after each connecting rod is installed, each marking hole is located on an extension line of the direction of the corresponding connecting rod.

[0012] Furthermore, in the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, the connecting rods are evenly spaced around the circumference, and the number of the connecting rods is the same as the number of the embedded unit plates.

[0013] Furthermore, the aforementioned positioning template tooling for the embedded plate of a nuclear power safety container, wherein: a plurality of placement positioning through holes for quickly positioning and placing each embedded unit plate are arranged at intervals on the bottom plate ring, and the diameter of the placement positioning through hole is larger than the diameter of the bottom arc through hole.

[0014] The advantages of the present invention are: 1. After the outer ring connecting seat and the inner ring placing seat are detachably connected by a number of connecting rods arranged at circumferential intervals to form a positioning template tooling, the outer ring connecting seat and the inner ring placing seat cooperate to form a flush placement surface for stably placing each embedded unit plate. A number of positioning connecting through holes are circumferentially arranged on the outer ring connecting seat, which can respectively cooperate with the embedded through holes on each embedded unit plate up and down. The positioning template tooling of the above structure is convenient for manufacturing, transportation and installation. The positioning template tooling of this structure is used to position each embedded unit plate and then weld it. The embedded plate formed after welding can meet the on-site assembly welding technical requirements, thereby facilitating the positioning and welding of each unit block of the middle plate, the shielding outer ring plate and the shielding inner ring plate. 2. A further advantage of the present invention is that the outer ring connecting seat comprises: an inner ring plate and an outer ring plate arranged with vertical inner and outer intervals, the inner ring plate and the outer ring plate have the same height, the bottom of the inner ring plate and the outer ring plate are fixedly connected by a bottom plate ring formed by circumferential splicing of several bottom arc plates, and a guide mechanism for constraining the direction of the embedded bolts is also provided between the inner ring plate and the outer ring plate. The outer ring connecting seat of the above structure reduces the weight of the positioning template tooling while ensuring the rigidity of the positioning template tooling, and at the same time, the guide mechanism can make each bottom arc through hole conveniently and accurately docked with the corresponding embedded through hole through the embedded bolts up and down, further improving the accuracy of the position of the embedded through holes on the embedded plate after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic top view of the structural diagram of a positioning template tooling for an embedded plate of a nuclear power safety container according to the present invention;

[0016] Figure 2 yes Figure 1 AA cross-sectional structural diagram;

[0017] Figure 3 yes Figure 1 BB cross-sectional structure diagram;

[0018] Figure 4 yes Figure 1 Schematic diagram of CC cross-sectional structure;

[0019] Figure 5 yes Figure 1 A schematic diagram of the enlarged structure of part D;

[0020] Figure 6 yes Figure 2 Schematic diagram of the enlarged structure of part E;

[0021] Figure 7 yes Figure 2 Schematic diagram of the enlarged structure of part F;

[0022] Figure 8This is a top view of the structure of the embedded plate, middle plate, shielding outer ring plate, and shielding inner ring plate of the nuclear power safety container after installation, and the figure shows the position of the positioning template tooling and the embedded plate after coordination;

[0023] Figure 9 yes Figure 8 Schematic diagram of the GG cross-sectional structure when the center middle plate is not welded;

[0024] Figure 10 yes Figure 9 Schematic diagram of the enlarged structure of the H part;

[0025] Figure 11 yes Figure 8 Schematic diagram of the structure of the middle outer ring plate. Implementation Method

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, a positioning template tooling for the embedded plate of a nuclear power safety container includes: an inner ring placement seat 5 and an annular outer ring connecting seat 6 arranged at intervals inside and outside, the outer ring connecting seat 6 and the inner ring placement seat 5 are detachably connected by a plurality of connecting rods 7 arranged at intervals in the circumferential direction, and the outer ring connecting seat 6 is provided with a plurality of positioning connecting through holes 61 which can respectively cooperate with the embedded through holes on each embedded unit plate in the circumferential direction; the structure of the outer ring connecting seat 6 and the inner ring placement seat 5 and the number and position of the connecting rods 7 meet the following requirements: after the outer ring connecting seat 6 and the inner ring placement seat 7 are connected by the plurality of connecting rods 7 to form the positioning template tooling, the outer ring connecting seat 6 and the inner ring The placement seats 5 cooperate to form a flush placement surface for stably placing each embedded unit plate, allowing each embedded unit plate to be placed flush circumferentially on the flush placement surface. Subsequently, each embedded bolt 21 can be respectively inserted through the corresponding embedded through-holes on each embedded unit plate and the corresponding positioning and connection through-holes 61 on the outer ring connection seat, allowing each embedded unit plate to be positioned and removably connected with the positioning template tooling. The embedded unit plates, then placed flush circumferentially on the flush placement surface and positioned with the positioning template tooling, are then welded to form the embedded plate 2, thereby ensuring that the welded embedded plate 2 meets the requirements of on-site assembly welding. In this embodiment, the outer ring connection seat 6 and the inner ring placement seat 5 are removably connected by a number of connecting rods 7 arranged evenly spaced circumferentially. The number of connecting rods 7 is the same as the number of embedded unit plates, and there are eight connecting rods 7.

[0028] Since the embedded plate 2 has a large diameter and is relatively thick, in order to stably support each embedded unit plate, it is necessary to ensure the rigidity of the positioning template tooling. In this embodiment, in order to ensure the rigidity of the positioning template tooling while reducing the weight of the positioning template tooling, the outer ring connecting seat 6 includes: an inner ring plate 62 and an outer ring plate 63 arranged vertically inward and outward, the inner ring plate 62 and the outer ring plate 63 have the same height, and the bottom of the inner ring plate 62 and the outer ring plate 63 are fixedly connected by a bottom plate ring 64. In order to facilitate manufacturing and transportation, the bottom plate ring 64 is formed by circumferentially splicing several bottom arc plates 65. The number of bottom arc plates 65 is the same as the number of embedded unit plates. Each bottom arc plate 65 is provided with a number of bottom arc through holes 651, which is the same as the number of embedded through holes on the corresponding embedded unit plate and can respectively cooperate with the embedded through holes on the embedded unit plate up and down. In this embodiment, two bottom arc through holes 651 are arranged at intervals on each bottom arc plate 65, and a guide mechanism for constraining the direction of the embedded bolts 21 is also provided between the inner ring plate 62 and the outer ring plate 63, so that each bottom arc through hole 651 can be conveniently and accurately docked with the corresponding embedded through hole up and down through the embedded bolts.

[0029] In this embodiment, the vertical cross-section of the inner ring placement seat 5 is "H"-shaped, including: a circular positioning plate 51 and a number of connecting plates 9 fixed on the side wall of the circular positioning plate 51 at even circumferential intervals and placed vertically. The number of connecting plates 9 fixed on the circular positioning plate is the same as the number of connecting rods 7. In actual manufacturing, these connecting plates 9 are welded to the side wall of the circular positioning plate 51; the top end of each connecting plate 9 fixed on the circular positioning plate 51 cooperates with the top end of the inner ring plate 62 and the outer ring plate 63 to form a flush placement surface.

[0030] In this embodiment, the guide mechanism includes: a guide plate 66 is arranged between the inner ring plate 62 and the outer ring plate 63 above each bottom arc through hole 651, the guide plate 66 is arranged parallel to the bottom arc plate 65, and a guide through hole is provided on the guide plate 66 that is opposite to the bottom arc through hole 651 up and down, and a vertical guide tube 67 is provided between the guide plate 66 and the bottom arc plate; the corresponding guide through holes, guide tubes 67, and bottom arc through holes 651 cooperate to form a positioning connecting through hole 61.

[0031] In this embodiment, several bottom arc plates 65 are circumferentially spliced ​​together as follows: Connecting angle steels 652 are provided at each end of each bottom arc plate 65 . The inner and outer ends of each connecting angle steel 652 are respectively fixed to the inner ring plate 62 and the outer ring plate 63 . Two adjacent bottom arc plates 65 are bolted together via the connecting angle steels 652 . This circumferential splicing method increases the rigidity of the outer ring connecting seat 6 , thereby further increasing the rigidity of the entire positioning template assembly. During actual manufacturing, the inner and outer ring plates 62 , 63 are further fixedly connected by several spaced reinforcing angle steels 68 , further increasing the rigidity of the outer ring connecting seat 6 .

[0032] In this embodiment, each connecting rod 7 includes a connecting tube 71. In actual use, the connecting tube 71 is a square tube. Vertical mounting plates 72 are provided at the inner and outer ends of the connecting tube 71. The mounting plates 72 at the inner ends of each connecting tube 71 are bolted to the corresponding connecting plates 9 on the inner ring placement seat 5, and the connecting plates 72 at the outer ends of each connecting tube 71 are bolted to the inner ring plate 62. In this embodiment, the height of the mounting plates 72 is the same as that of the connecting plates 9, and the top ends of the mounting plates 72 at the inner and outer ends of each connecting tube 71 also form a flush placement surface.

[0033] In this embodiment, the circular positioning plate 51 is provided with a plurality of marking holes 52 spaced evenly around the circumference for facilitating the installation of the connecting rods 7. The number of marking holes 52 is the same as the number of connecting rods 7. After each connecting rod 7 is installed, each marking hole 52 is located on an extension line of the corresponding connecting rod 7. The provision of the marking holes 52 facilitates the one-to-one alignment and positioning of the bolt holes on the inner ring plate 62 with the corresponding bolt holes on the mounting plates 72, thereby improving the installation efficiency of the connecting rods 7.

[0034] In this embodiment, in order to quickly position and place each embedded unit board, a number of placement positioning holes 653 are spaced apart on the bottom plate ring 64. The diameter of the placement positioning holes 653 is larger than the diameter of the bottom arc through hole 651. In actual manufacturing, the placement positioning holes 653 can be set on several bottom arc plates 65. Correspondingly, pre-embedded placement positioning holes are also set on a corresponding number of embedded unit boards. When each placement positioning through hole 653 and the corresponding pre-embedded placement positioning through hole are vertically opposite, each positioning connection through hole 61 on the positioning template tooling can quickly be aligned with the corresponding pre-embedded through hole on each embedded unit board, thereby facilitating the connection between the positioning template tooling and each embedded unit board. In actual manufacturing, in order to facilitate the rapid positioning of the embedded unit board, the diameter of the placement positioning through hole 653 is 5-7 times the diameter of the bottom arc through hole 651.

[0035] Each embedded unit plate is placed flush on the flush placement surface of the positioning template tooling, and is positioned and detachably connected to the positioning template tooling through embedded bolts 21 and then welded to form an embedded plate 2. Then, the embedded plate 2 and embedded bolts 21 are embedded by grouting on site, and the positioning template tooling is separated from the embedded plate 2 and embedded bolts 21. In actual use, the embedded bolts 21 are anchor bolts. Figure 8 、 Figure 9 、 Figure 10 、 Figure 11As shown, when the intermediate plate 1 is welded, each intermediate arc-shaped plate 121 is placed flush with the pre-embedded plate 2 in the circumferential direction and connected to the pre-embedded plate 2 via pre-embedded bolts 21. After welding, each intermediate arc-shaped plate 121 forms the intermediate outer ring plate 12. The central intermediate plate 11 is placed on the embedded plate 2 surrounded by the intermediate outer ring plate 12 and welded to the intermediate outer ring plate. This allows for a convenient and efficient production of an intermediate plate 1 that meets the technical requirements for on-site welding. Before welding, the individual unit blocks of the shielding outer ring plate 3 and the shielding inner ring plate 4 can be positioned using the welded intermediate plate 1. This also allows for a convenient and efficient production of the welded shielding outer ring plate 3 and the shielding inner ring plate 4 that meet the technical requirements for on-site welding. It can be seen that obtaining high-quality embedded plates 2 that meet the technical requirements for on-site welding can greatly improve the manufacturing efficiency of the intermediate plate 1, the shielding outer ring plate 3, and the shielding inner ring plate 4.

[0036] The advantages of the present invention are: 1. After the outer ring connecting seat 6 and the inner ring placing seat 5 are detachably connected by a number of connecting rods 7 arranged at circumferential intervals to form a positioning template tooling, the outer ring connecting seat 6 and the inner ring placing seat 5 cooperate to form a flush placement surface for stably placing each embedded unit plate. A number of positioning connecting through holes 61 that can respectively cooperate with the embedded through holes on each embedded unit plate on the upper and lower sides are arranged at circumferential intervals on the outer ring connecting seat 6. The positioning template tooling of the above structure is convenient for manufacturing, transportation and installation. The positioning template tooling of this structure is used to position each embedded unit plate and then weld it. The embedded plate 2 formed after welding can meet the on-site assembly welding technical requirements, thereby facilitating the positioning and welding of each unit block of the middle plate 1, the shielding outer ring plate 3, and the shielding inner ring plate 4. 2. A further advantage of the present invention is that the outer ring connecting seat 6 includes: an inner ring plate 62 and an outer ring plate 63 arranged with vertical inner and outer intervals, the inner ring plate 62 and the outer ring plate 63 have the same height, the bottom of the inner ring plate 62 and the outer ring plate 63 are fixedly connected by a bottom plate ring 64 formed by circumferential splicing of several bottom arc plates 65, and a guide mechanism for constraining the direction of the embedded bolts 21 is also provided between the inner ring plate 62 and the outer ring plate 63. The outer ring connecting seat 6 of the above structure reduces the weight of the positioning template tooling while ensuring the rigidity of the positioning template tooling. At the same time, the guide mechanism can make each bottom arc through hole 651 conveniently and accurately docked with the corresponding embedded through hole through the embedded bolts up and down, further improving the accuracy of the position of the embedded through hole on the embedded plate 2 after welding.

Claims

1. A positioning template tool for the embedded plate of a nuclear power safety container, characterized by: include: The inner ring placement seat and the annular outer ring connecting seat are arranged at intervals inside and outside, and the outer ring connecting seat and the inner ring placement seat are detachably connected by a number of connecting rods arranged at intervals in the circumferential direction. The outer ring connecting seat is provided with a number of positioning connecting through holes that can respectively cooperate with the embedded through holes on each embedded unit plate up and down; the structure of the outer ring connecting seat and the inner ring placement seat and the number and position of the connecting rods meet the following requirements: after the outer ring connecting seat and the inner ring placement seat are connected by a number of connecting rods to form a positioning template tooling, the outer ring connecting seat and the inner ring placement seat cooperate to form a flush placement surface for stably placing each embedded unit plate, so that each embedded unit plate can be placed circumferentially flush on the flush placement surface, and then each embedded bolt can be respectively passed through the corresponding embedded through hole on each embedded unit plate and the corresponding positioning connecting through hole on the outer ring connecting seat, so that each embedded unit plate can be positioned and detachably connected to the positioning template tooling, and then the embedded unit plates that are circumferentially flush placed on the flush placement surface and detachably connected to the positioning template tooling are welded to form an embedded plate, so that the welded embedded plate can meet the on-site assembly welding technical requirements.

2. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 1 is characterized in that: The outer ring connecting seat includes: an inner ring plate and an outer ring plate arranged with vertical inner and outer intervals, the inner ring plate and the outer ring plate have the same height, the bottom of the inner ring plate and the outer ring plate are fixedly connected by a bottom plate ring, the bottom plate ring is formed by circumferential splicing of several bottom arc plates, the number of bottom arc plates is the same as the number of embedded unit plates, each bottom arc plate is provided with a number of bottom arc through holes which are the same in number as the number of embedded through holes on the corresponding embedded unit plates and can respectively cooperate with the embedded through holes on the embedded unit plates up and down, a guide mechanism for constraining the direction of the embedded bolts is also provided between the inner ring plate and the outer ring plate, so that each bottom arc through hole can be conveniently and quickly connected with the corresponding embedded through hole up and down through the embedded bolts.

3. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 2 is characterized by: The guide mechanism includes: a guide plate is arranged between the inner ring plate and the outer ring plate above each bottom arc through hole, the guide plate is parallel to the bottom arc plate, and a guide through hole is arranged on the guide plate and is opposite to the bottom arc through hole up and down, and a vertical guide tube is arranged between the guide plate and the bottom arc plate; the corresponding guide through holes, guide tubes, and bottom arc through holes cooperate to form a positioning connecting through hole.

4. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 3 is characterized by: Each bottom arc plate is provided with connecting angle steels at both ends. The inner and outer ends of each connecting angle steel are fixed to the inner ring plate and the outer ring plate respectively. The two adjacent bottom arc plates are connected by connecting angle steel bolts.

5. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 2 is characterized in that: The vertical cross-section of the inner ring placement seat is "H"-shaped, including: a circular positioning plate and several connecting plates fixed on the side wall of the circular positioning plate at circumferential intervals and placed vertically. The number of connecting plates is the same as the number of connecting rods; the top of each connecting plate cooperates with the top of the inner ring plate and the top of the outer ring plate to form a flush placement surface.

6. A positioning template tool for the embedded plate of a nuclear power safety container according to claim 1, 2, 3, 4, or 5, characterized in that: Each connecting rod includes: a connecting tube, with mounting plates provided at both inner and outer ends of the connecting tube; the mounting plate at the inner end of each connecting tube is bolted to the inner ring seat, and the mounting plate at the outer end of each connecting tube is bolted to the annular outer ring connecting seat.

7. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 6 is characterized by: The inner ring placement seat is circumferentially provided with a number of marking holes for facilitating the installation of each connecting rod, and the number of the marking holes is the same as the number of the connecting rods; after each connecting rod is installed, each marking hole is located on an extension line of the direction of the corresponding connecting rod.

8. The positioning template tooling for the embedded plate of a nuclear power safety container according to claim 6 is characterized by: The connecting rods are evenly spaced around the circumference, and the number of the connecting rods is the same as the number of the embedded unit plates.

9. A positioning template tool for the embedded plate of a nuclear power safety container according to claim 2, 3, 4 or 5, characterized in that: A plurality of positioning through holes for quickly positioning and placing each embedded unit board are arranged at intervals on the bottom plate ring, and the diameter of the positioning through holes is larger than the diameter of the bottom arc through hole.

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