Safety protection plug for nuclear power facility

Abstract

The utility model discloses a safety protection plug for nuclear power facilities, which belongs to the technical field of protection plugs and comprises a firewall, first U-shaped plates are tightly attached to two sides of the inside of the firewall, second U-shaped plates are tightly attached to two ends of the inside of the firewall, and the first U-shaped plates and the second U-shaped plates are arranged in the firewall. Mounting mechanisms are arranged outside the first U-shaped plate and the second U-shaped plate, sealing mechanisms are arranged between the first U-shaped plate and the second U-shaped plate, and a dismounting and mounting mechanism is arranged between the sealing mechanisms. By arranging the mounting mechanism, the sealing mechanism and the detachable connecting part, quick separation and combination of the pipe cable and the sealing structure are realized, the maintenance efficiency is improved, the modularized sealing structure is convenient for local replacement and maintenance, the influence on the whole structure is reduced, the maintenance time and the labor cost are reduced, and the maintenance efficiency is improved. According to the utility model, the sealing mechanism and the dismounting mechanism are arranged, so that the connecting and dismounting processes of the sealing structure and the partition wall are simplified.

Description

Technical Field

[0001] This utility model relates to the field of protection and sealing technology, and in particular to a safety protection and sealing method for nuclear power facilities. Background Technology

[0002] Nuclear safety critical buildings are those within a nuclear power plant that possess vital safety functions. These include reactor buildings, containment structures, nuclear auxiliary buildings, and radioactive waste treatment facilities. The safety of these buildings is crucial for the normal operation of the nuclear power plant and for preventing the leakage of radioactive materials. Firestopping is one of the important measures to ensure the safety of nuclear facilities within nuclear safety critical buildings. It can effectively prevent the spread of fire, protect personnel safety, prevent the leakage of radioactive materials, and ensure the normal operation of facilities. The selection of firestopping materials should be based on factors such as the building's fire resistance rating, the operating environment, and construction conditions. Generally, firestopping materials should possess good fire resistance, airtightness, watertightness, mechanical properties, and durability. Common firestopping materials include fireproof bags, fireproof boards, fireproof adhesives, and modular cable and pipe penetration sealing systems.

[0003] The existing fireproof sealing structures for pipes penetrating the partition walls in nuclear power plants use a large amount of cement and mortar as fixing materials. During routine maintenance at a certain nuclear power plant, when it is necessary to inspect or replace the pipe sealing structures that penetrate the partition walls, the complex connection between the pipes and the sealing structures makes the disassembly and installation process time-consuming and labor-intensive. Moreover, the disassembly process can easily damage the sealing structures and pipes, which not only increases maintenance costs but may also affect the safe operation of the nuclear power plant.

[0004] Therefore, there is an urgent need to provide a safety protection and sealing solution for nuclear power facilities to address the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a safety protection and sealing solution for nuclear power facilities.

[0006] To solve the above-mentioned technical problems, the present invention provides a safety protection and sealing solution for nuclear power facilities, including a firewall. The firewall has a first U-shaped plate tightly attached to both sides of its interior and a second U-shaped plate tightly attached to both ends of its interior. An installation mechanism is provided on the outside of the first and second U-shaped plates. A sealing mechanism is provided between the first and second U-shaped plates, and a disassembly and assembly mechanism is provided between the sealing mechanisms.

[0007] Through the above technical solutions, the firewall can effectively prevent the spread of fire, protect personnel safety, prevent the leakage of radioactive materials, and ensure the normal operation of facilities. The first U-shaped plate and the second U-shaped plate reinforce the firewall openings.

[0008] The present invention is further configured such that: the installation mechanism includes a first connecting plate fixed to the outside of the first U-shaped plate, a second connecting plate fixedly installed on the outside of the second U-shaped plate, and a first fixing bolt threaded inside the second connecting plate and the first connecting plate.

[0009] Through the above technical solution, the first fixing bolt fixes the second connecting plate and the first connecting plate, and the first U-shaped plate and the second U-shaped plate are assembled and connected through the second connecting plate and the first connecting plate.

[0010] The present invention is further configured such that: a limiting plate is provided between the two first U-shaped plates, and an mounting plate is fixedly installed on the outside of the two first U-shaped plates, and the two ends of the limiting plate are respectively fixed with second fixing bolts to the internal threads of the two mounting plates.

[0011] The above technical solution uses the second fixing bolt to fix the mounting plate and the limiting plate, so that the limiting plate is assembled and connected with the first U-shaped plate.

[0012] The present invention is further configured such that: the sealing mechanism includes a fixing block fixed to one side of the second U-shaped plate, a sealing lower shell is fitted and installed on the outside of the fixing block, and a connecting rod is fixedly installed on one side of the sealing lower shell.

[0013] The above technical solution involves installing the sealed lower shell using a fixing block.

[0014] The present invention is further configured such that: a sealing upper shell is fitted and installed on the outside of the connecting rod, a sealing ring is sealed between the sealing lower shell and the sealing upper shell, and a cable body is sealed inside the sealing ring.

[0015] Through the above technical solution, the sealing lower shell is assembled and connected to the sealing upper shell through the connecting rod, and the sealing lower shell and the sealing upper shell are sealed and installed on the cable body through the sealing ring.

[0016] The present invention is further configured such that: the disassembly and assembly mechanism includes a spacer shell that is tightly fitted between the two first U-shaped plates, and two telescopic blocks with one end penetrating through and extending into the interior of the sealing upper shell are slidably installed inside the spacer shell; and a slanted sliding plate is fixedly installed on one side of each of the limiting plates.

[0017] Through the above technical solution, the inclined slide moves telescopically inside the spacer shell, and the telescopic block moves telescopically inside the spacer shell.

[0018] The present invention is further configured such that: a shell groove is provided inside the spacer shell, and the inside of the shell groove is slidably connected to the outside of the inclined slide plate; a block groove is provided inside the telescopic block, and the inside of the block groove is adaptively slidably connected to the outside of the inclined slide plate.

[0019] Through the above technical solution, the inclined slide plate is slid and stored in the shell groove, while the inclined slide plate drives the telescopic block to extend and retract adaptively through the block groove.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model, by providing an installation mechanism and a sealing mechanism, and detachable connecting parts, enables the rapid separation and connection of the conduit and the sealing structure, improving maintenance efficiency. The modular sealing structure facilitates local replacement and maintenance, reduces the impact on the overall structure, and lowers maintenance time and labor costs.

[0022] 2. By incorporating a sealing mechanism and a disassembly mechanism, this utility model simplifies the connection and disassembly process between the sealing structure and the partition wall, reduces operational difficulty, avoids large-scale dismantling and damage, reduces material and equipment replacement costs, improves the safety and reliability of nuclear power plant maintenance, and ensures the normal operation of the nuclear power plant. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is an exploded structural diagram of the installation mechanism of this utility model;

[0025] Figure 3 This is an exploded structural diagram of the disassembly and assembly mechanism of this utility model;

[0026] Figure 4 This is a diagram showing the internal structure of the spacer shell of this utility model;

[0027] Figure 5 This is an exploded structural diagram of the sealing mechanism of this utility model.

[0028] In the diagram: 1. Firewall; 2. First U-shaped plate; 3. Second U-shaped plate; 4. Installation mechanism; 401. First connecting plate; 402. Second connecting plate; 403. First fixing bolt; 404. Limiting plate; 405. Mounting plate; 406. Second fixing bolt; 5. Sealing mechanism; 501. Fixing block; 502. Lower sealing shell; 503. Connecting rod; 504. Upper sealing shell; 505. Sealing ring; 506. Cable body; 6. Disassembly and assembly mechanism; 601. Spacer shell; 602. Telescopic block; 603. Slanted sliding plate; 604. Shell groove; 605. Block groove. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] Please see Figures 1-5 A safety protection and sealing system for nuclear power facilities includes a firewall 1. First U-shaped plates 2 are tightly fitted to both sides of the interior of the firewall 1, and second U-shaped plates 3 are tightly fitted to both ends of the interior of the firewall 1. An installation mechanism 4 is provided on the exterior of the first U-shaped plates 2 and the second U-shaped plates 3. The installation mechanism 4 includes a first connecting plate 401 fixed to the exterior of the first U-shaped plates 2, a second connecting plate 402 fixedly installed on the exterior of the second U-shaped plates 3, and first fixing bolts 403 threadedly fixed to the interior of the second connecting plate 402 and the first connecting plate 401. A limiting plate 404 is provided between the two first U-shaped plates 2, and installation plates 405 are fixedly installed on the exterior of both first U-shaped plates 2. The two ends of 4 are respectively fixed with second fixing bolts 406 to the internal threads of the two mounting plates 405. Firewall 1 can effectively prevent the spread of fire, protect personnel safety, prevent the leakage of radioactive materials, and ensure the normal operation of the facility. The first U-shaped plate 2 and the second U-shaped plate 3 reinforce the holes of firewall 1. The first fixing bolt 403 fixes the second connecting plate 402 and the first connecting plate 401. The first U-shaped plate 2 and the second U-shaped plate 3 are assembled and connected through the second connecting plate 402 and the first connecting plate 401. The mounting plate 405 and the limiting plate 404 are fixed through the second fixing bolt 406, so that the limiting plate 404 is assembled and connected with the first U-shaped plate 2.

[0031] like Figure 2 and Figure 5 As shown, a sealing mechanism 5 is provided between the first U-shaped plate 2 and the second U-shaped plate 3. The sealing mechanism 5 includes a fixing block 501 fixed to one side of the second U-shaped plate 3. A sealing lower shell 502 is fitted onto the outside of the fixing block 501. A connecting rod 503 is fixedly installed on one side of the sealing lower shell 502. A sealing upper shell 504 is fitted onto the outside of the connecting rod 503. A sealing ring 505 is sealed between the sealing lower shell 502 and the sealing upper shell 504. A cable body 506 is sealed inside the sealing ring 505. The sealing lower shell 502 is installed by the fixing block 501. The sealing lower shell 502 is assembled and connected to the sealing lower shell 502 by the connecting rod 503. The sealing lower shell 502 and the sealing upper shell 504 are sealed to the cable body 506 by the sealing ring 505, thereby sealing the hole in the firewall 1.

[0032] like Figure 3 and Figure 4As shown, a disassembly and assembly mechanism 6 is provided between the sealing mechanisms 5. The disassembly and assembly mechanism 6 includes a spacer shell 601 that is tightly fitted between the two first U-shaped plates 2. Two telescopic blocks 602, one end of which penetrates and extends into the upper sealing shell 504, are slidably installed inside the spacer shell 601. An inclined slide plate 603 is fixedly installed on one side of the limiting plate 404. A shell groove 604 is opened inside the spacer shell 601. The inside of the shell groove 604 is slidably connected to the outside of the inclined slide plate 603. A block groove 605 is opened inside the telescopic block 602. The inside of the block groove 605 is adaptively slidably connected to the outside of the inclined slide plate 603. The inclined slide plate 603 moves telescopically inside the spacer shell 601, and the telescopic blocks 602 move telescopically inside the spacer shell 601. The inclined slide plate 603 is slidably folded in through the shell groove 604. At the same time, the inclined slide plate 603 drives the telescopic blocks 602 to move adaptively through the block groove 605.

[0033] In use, the firewall 1 effectively prevents the spread of fire, protects personnel safety, prevents the leakage of radioactive materials, and ensures the normal operation of the facility. The first U-shaped plate 2 and the second U-shaped plate 3 reinforce the openings in the firewall 1. The first fixing bolt 403 fixes the second connecting plate 402 and the first connecting plate 401. The first U-shaped plate 2 and the second U-shaped plate 3 are assembled and connected via the second connecting plate 402 and the first connecting plate 401. The sealing lower shell 502 is installed via the fixing block 501. The sealing lower shell 502 is assembled and connected to the sealing upper shell 504 via the connecting rod 503. The sealing lower shell 502 and the sealing upper shell 504 are connected via the sealing ring 505. The cable body 506 is sealed and installed to block the hole in the firewall 1. The spacer shell 601 is inserted into the middle of the two first U-shaped plates 2. The inclined slide plate 603 is driven to move telescopically inside the spacer shell 601 by the limiting plate 404. The inclined slide plate 603 is slid and accommodated by the shell sliding groove 604. At the same time, the inclined slide plate 603 drives the telescopic block 602 to move adaptively through the block sliding groove 605. The telescopic block 602 moves telescopically inside the spacer shell 601, so that the telescopic block 602 fits and fixes one side of the sealing upper shell 504. The mounting plate 405 and the limiting plate 404 are fixed by the second fixing bolt 406, so that the limiting plate 404 is assembled and connected with the first U-shaped plate 2.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A safety protection and containment system for nuclear power facilities, comprising a firewall (1), characterized in that: The firewall (1) has a first U-shaped plate (2) tightly attached to both sides of its interior, and a second U-shaped plate (3) tightly attached to both ends of its interior. An installation mechanism (4) is provided on the outside of the first U-shaped plate (2) and the second U-shaped plate (3). A sealing mechanism (5) is provided between the first U-shaped plate (2) and the second U-shaped plate (3). A disassembly and assembly mechanism (6) is provided between the sealing mechanisms (5).

2. The nuclear power facility safety protection and sealing method according to claim 1, characterized in that: The installation mechanism (4) includes a first connecting plate (401) fixed to the outside of the first U-shaped plate (2), a second connecting plate (402) fixedly installed on the outside of the second U-shaped plate (3), and a first fixing bolt (403) threadedly fixed inside the second connecting plate (402) and the first connecting plate (401).

3. The nuclear power facility safety protection and sealing method according to claim 2, characterized in that: A limiting plate (404) is provided between the two first U-shaped plates (2), and an mounting plate (405) is fixedly installed on the outside of the two first U-shaped plates (2). The two ends of the limiting plate (404) are respectively fixed with the internal threads of the two mounting plates (405) by second fixing bolts (406).

4. The nuclear power facility safety protection and sealing method according to claim 3, characterized in that: The sealing mechanism (5) includes a fixing block (501) fixed to one side of the second U-shaped plate (3), a sealing lower shell (502) is fitted on the outside of the fixing block (501), and a connecting rod (503) is fixedly installed on one side of the sealing lower shell (502).

5. A safety protection and sealing method for nuclear power facilities according to claim 4, characterized in that: A sealing upper shell (504) is fitted onto the outside of the connecting rod (503), a sealing ring (505) is sealed between the sealing lower shell (502) and the sealing upper shell (504), and a cable body (506) is sealed inside the sealing ring (505).

6. A safety protection and sealing method for nuclear power facilities according to claim 5, characterized in that: The disassembly and assembly mechanism (6) includes a spacer shell (601) that fits tightly between the two first U-shaped plates (2). Two telescopic blocks (602) with one end penetrating through and extending into the interior of the sealing upper shell (504) are slidably installed inside the spacer shell (601). An inclined slide plate (603) is fixedly installed on one side of the limiting plate (404).

7. A safety protection and sealing method for nuclear power facilities according to claim 6, characterized in that: The spacer shell (601) has a shell groove (604) inside, and the inside of the shell groove (604) is slidably connected to the outside of the inclined slide plate (603). The telescopic block (602) has a block groove (605) inside, and the inside of the block groove (605) is adaptively slidably connected to the outside of the inclined slide plate (603).

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