Anti-flying object explosion venting membrane window for nuclear power

Abstract

The utility model belongs to the technical field of explosion venting membrane windows, and particularly discloses a nuclear power flying object prevention explosion venting membrane window which comprises an outer window frame, an inner window frame and an explosion venting membrane, the outer window frame and the inner window frame are rotationally installed through a hinge, and locking fasteners are arranged on the sides, away from the hinge, of the outer window frame and the inner window frame. An explosion venting through cavity is formed in the inner side of the inner window frame, the explosion venting membrane is installed in the explosion venting through cavity of the inner window frame in a sealed mode through a plurality of locking pieces, and meanwhile a steel grating abutting against the end face of the explosion venting membrane is arranged on the inner side of the inner window frame. When high pressure occurs indoors, the explosion venting film is exploded to quickly release indoor pressure, damage to indoor equipment, instruments and meters caused by the fact that external flying objects are rolled up by tornado is prevented, and meanwhile damage to the indoor equipment, instruments and meters caused by pressure increase after indoor explosion is prevented. And meanwhile, follow-up workers can conveniently replace and install the explosion venting membrane.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion venting membrane windows, and particularly relates to an anti-projectile explosion venting membrane window for nuclear power plants. Background Art

[0002] The containment of a nuclear power plant needs to quickly relieve pressure during an accident (such as a pipe rupture), while preventing external projectiles from damaging the equipment, instruments and meters inside, and also needs to consider external projectiles. The existing explosion venting windows supporting nuclear islands and ancillary buildings have problems such as weak explosion venting reaction, inconvenient installation, and difficulty in replacing the explosion venting membrane, as well as weak anti-impact performance, resulting in a reduced service life of the explosion venting windows and bringing many difficulties to the maintenance and repair work of the devices after the nuclear power plant is put into operation. Therefore, we need to improve it. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and to propose an anti-projectile explosion venting membrane window for nuclear power plants.

[0004] To achieve the above purpose, the utility model provides an anti-projectile explosion venting membrane window for nuclear power plants, which includes an outer window frame, an inner window frame and an explosion venting membrane. The outer window frame and the inner window frame are rotatably installed through hinges, and a locking fastener is arranged on the side of the outer window frame and the inner window frame away from the hinge. An explosion venting cavity is arranged inside the inner window frame, and the explosion venting membrane is hermetically installed inside the explosion venting cavity of the inner window frame through a plurality of locking parts. At the same time, a steel grid for back-supporting the end face of the explosion venting membrane is arranged inside the inner window frame.

[0005] In the above technical solution, further, a plurality of the locking parts are evenly distributed around the periphery of the explosion venting membrane.

[0006] In the above technical solution, further, the locking part includes a bolt. Insertion through holes are formed in the periphery of the explosion venting membrane. The bolt sequentially passes through the inner window frame and the insertion through holes from the side away from the steel grid, and a nut is externally threadedly sleeved on the bolt.

[0007] In the above technical solution, further, a gasket structure is arranged between the bolt head and the explosion venting membrane. The gasket structure includes a gasket ring sleeved on the bolt. The outer diameters of the end parts of the gasket ring and the bolt head are smaller than the inner diameter of the insertion through hole. At the same time, a plurality of sector gaskets are equidistantly arranged on the outer side of the gasket ring. The sector gaskets are pressed on the surface of the explosion venting membrane. The sector gaskets and the gasket ring are of an integral metal structure.

[0008] In the above technical solution, further, protective members are provided between the four corners of the side of the explosion relief diaphragm away from the steel grating and the inner window frame. The protective member includes an installation sleeve fixedly installed at the side corner of the inner window frame. A tension spring is arranged inside the installation sleeve. One end of the tension spring is fixedly connected to the inner bottom end of the installation sleeve, and the other end of the tension spring is connected to a pull rope. The end of the pull rope away from the tension spring is fixedly connected to the explosion relief diaphragm through a pressing fixing member.

[0009] In the above technical solution, further, the pull rope is a high-toughness metal pull rope.

[0010] In the above technical solution, further, the design between the inner window frame and the outer window frame is an inward-opening type.

[0011] In the above technical solution, further, the inner window frame is assembled by a plurality of angle steels.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1) When an explosion occurs in the pipeline inside the factory building and the indoor air pressure reaches the designed explosion pressure, the explosion relief diaphragm quickly opens, timely releasing the indoor pressure and protecting the indoor equipment, instruments and meters.

[0014] 2) When an explosion occurs outdoors, since the explosion relief diaphragm is on the outer side of the window, the steel grating on the explosion relief diaphragm window fan plays a back-supporting role for the explosion relief diaphragm, and the explosion relief diaphragm will not burst, playing a role in resisting external explosions and protecting the indoor instruments, meters and equipment.

[0015] 3) When a disastrous weather such as a tornado occurs outdoors, when the flying objects rolled up by the tornado impact the explosion relief diaphragm, the explosion relief diaphragm and the steel grating can play a role in blocking the flying objects, preventing the flying objects from flying into the room and damaging the indoor equipment and instruments.

[0016] 4) Since the design between the inner window frame and the outer window frame is an inward-opening type, it is convenient for subsequent staff to replace the damaged explosion relief diaphragm indoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram proposed by the present utility model;

[0018] Figure 2 is a schematic structural diagram proposed by the present utility model;

[0019] Figure 3 is a schematic structural diagram proposed by the present utility model;

[0020] Figure 4 is a schematic structural diagram proposed by the present utility model;

[0021] Figure 5Structural schematic diagram proposed for the present utility model.

[0022] In the figure: outer window frame 1, inner window frame 2, explosion venting diaphragm 3, steel grille 4, nut 5, locking fastener 6, pull rope 7, installation sleeve 8, bolt 9, insertion through hole 10, cushion ring 11, tension spring 12, pressing and fixing member 13, sector gasket 14. Detailed implementation manners

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0024] As Figures 1-5 shown, an anti-projectile explosion venting membrane window for nuclear power plants includes an outer window frame 1, an inner window frame 2 and an explosion venting diaphragm 3. The inner window frame 2 is assembled by a plurality of angle steels. The outer window frame 1 and the inner window frame 2 are rotatably installed through hinges, and a locking fastener 6 is arranged on the side of the outer window frame 1 and the inner window frame 2 away from the hinge. A venting cavity is arranged inside the inner window frame 2, and the explosion venting diaphragm 3 is hermetically installed inside the venting cavity of the inner window frame 2 through a plurality of locking members. At the same time, a steel grille 4 for back-supporting the end face of the explosion venting diaphragm 3 is arranged inside the inner window frame 2.

[0025] When an explosion occurs in the pipeline inside the plant and the indoor air pressure reaches the designed explosion pressure, the explosion venting diaphragm 3 quickly opens to release the indoor pressure in time to protect the indoor equipment, instruments and meters; when an explosion occurs outdoors, since the explosion venting diaphragm 3 is on the outside of the window, the steel grille on the window fan of the explosion venting diaphragm 3 plays a role of back-supporting the explosion venting diaphragm 3, and the explosion venting diaphragm 3 will not explode, playing a role of resisting external explosions, protecting indoor instruments, meters and equipment, and at the same time playing a role of blocking projectiles rolled up by tornadoes. The production materials have stable mechanical properties and thermal stability.

[0026] A plurality of locking members are evenly distributed around the periphery of the explosion venting diaphragm 3. The locking members include bolts 9. Insertion through holes 10 are formed in the periphery of the explosion venting diaphragm 3. The bolts 9 sequentially pass through the inner window frame 2 and the insertion through holes 10 from the side away from the steel grille 4, and nuts 5 are threadedly sleeved on the outside.

[0027] By arranging the bolts 9 and nuts 5, the explosion venting diaphragm 3 can be firmly installed in the insertion through holes 10 inside the inner window frame 2, so as to seal and block the insertion through holes 10.

[0028] A pressing pad structure is arranged between the bolt 9 cap head and the explosion venting diaphragm 3. The pressing pad structure includes a cushion ring 11 sleeved on the outside of the bolt 9. The outer diameters of the end of the cushion ring 11 and the bolt 9 cap head are smaller than the inner diameter of the insertion through hole 10. At the same time, a plurality of sector gaskets 14 are equidistantly arranged on the outside of the cushion ring 11. The sector gaskets 14 are pressed on the surface of the explosion venting diaphragm 3. The sector gaskets 14 and the cushion ring 11 are of an integral metal structure.

[0029] Since the outer diameters of the ends of the spacer ring 11 and the bolt 9 cap head are smaller than the inner diameter of the insertion through hole 10, when the air pressure impacts the explosion relief diaphragm 3, the plurality of sector-shaped gaskets 14 will deform under the pushing of the explosion relief diaphragm 3 and then pass through the insertion through hole 10, so that the explosion relief diaphragm 3 can be separated from the bolt 9, facilitating the rapid pressure relief of the air pressure through the explosion relief cavity, thereby reducing the pulling damage of the impact force on the inner window frame 2.

[0030] There are protective parts between the four corners of the side of the explosion relief diaphragm 3 away from the steel grating 4 and the inner window frame 2. The protective parts include mounting sleeves 8 fixedly installed at the side corners of the inner window frame 2. A tension spring 12 is arranged inside the mounting sleeve 8. One end of the tension spring 12 is fixedly connected to the inner bottom end of the mounting sleeve 8, and the other end of the tension spring 12 is connected to a pull rope 7. The end of the pull rope 7 away from the tension spring 12 is fixedly connected to the explosion relief diaphragm 3 through a pressing fixing part 13; during the explosion relief process, the explosion relief diaphragm 3 will outwardly explode and separate under the action of the air pressure impact, and the arranged pull rope 7 and tension spring 12 can pull the exploded and separated explosion relief diaphragm 3 to prevent the explosion relief diaphragm 3 from flying out and causing potential safety hazards.

[0031] The pull rope 7 is a high-toughness metal pull rope, and the material of the metal pull rope can ensure the pulling strength on the explosion relief diaphragm 3 during the explosion relief process.

[0032] The inner window frame 2 and the outer window frame 1 are designed with an inward-opening type. The explosion relief diaphragm windows commonly seen in nuclear power plants are fixed types. The installation and replacement of the explosion relief diaphragm 3 can only be carried out outdoors. Since the installation height is relatively high, scaffolding needs to be erected, and the area is large, resulting in high costs. However, the installation form designed in this technical solution is an inward-opening type, and the installation can be directly completed indoors.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A projectile-proof explosion relief membrane window for nuclear power plants, comprising an outer window frame (1), an inner window frame (2) and an explosion relief membrane sheet (3), characterized in that, The outer window frame (1) is rotatably installed with the inner window frame (2) through a hinge, and a locking fastener (6) is provided on the side of the outer window frame (1) and the inner window frame (2) away from the hinge. A blast relief cavity is arranged inside the inner window frame (2). The blast relief diaphragm (3) is hermetically installed inside the blast relief cavity of the inner window frame (2) through a plurality of locking members. At the same time, a steel grating (4) for back-supporting the end face of the blast relief diaphragm (3) is arranged inside the inner window frame (2).

2. The anti-projectile explosion relief membrane window for nuclear power according to claim 1, characterized in that A plurality of the locking members are evenly distributed around the periphery of the blast relief diaphragm (3).

3. The explosion relief diaphragm window for nuclear power plants according to claim 2, characterized in that, The locking member includes a bolt (9). An insertion through-hole (10) is formed in the periphery of the blast relief diaphragm (3). The bolt (9) sequentially passes through the inner window frame (2) and the insertion through-hole (10) from the side away from the steel grating (4), and a nut (5) is threadedly sleeved outside.

4. A projectile-proof explosion relief membrane window for nuclear power according to claim 3, characterized in that, A pressing pad structure is arranged between the bolt head of the bolt (9) and the blast relief diaphragm (3). The pressing pad structure includes a pad ring (11) sleeved outside the bolt (9). The outer diameters of the end portions of the pad ring (11) and the bolt head of the bolt (9) are smaller than the inner diameter of the insertion through-hole (10). At the same time, a plurality of sector-shaped gaskets (14) are equidistantly arranged on the outer side of the pad ring (11). The sector-shaped gaskets (14) are pressed on the surface of the blast relief diaphragm (3). The sector-shaped gaskets (14) and the pad ring (11) are of an integral metal structure.

5. A projectile-proof explosion relief membrane window for nuclear power according to claim 1, characterized in that, Protective members are arranged between the four corners of the side of the blast relief diaphragm (3) away from the steel grating (4) and the inner window frame (2). The protective member includes an installation sleeve (8) fixedly installed at the side corner of the inner window frame (2). A tension spring (12) is arranged inside the installation sleeve (8). One end of the tension spring (12) is fixedly connected to the inner bottom end of the installation sleeve (8). The other end of the tension spring (12) is connected to a pull rope (7). One end of the pull rope (7) away from the tension spring (12) is fixedly connected to the blast relief diaphragm (3) through a pressing fixing member (13).

6. The explosion venting membrane window for nuclear power plants to prevent projectile as claimed in claim 5, wherein The pull rope (7) is a high-toughness metal pull rope.

7. A projectile-proof explosion relief membrane window for nuclear power according to claim 1, characterized in that, The inner window frame (2) and the outer window frame (1) are designed to open inwards.

8. The explosion relief membrane window for preventing flying objects in nuclear power according to claim 1, characterized in that, The inner window frame (2) is assembled by a plurality of angle steels.

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