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Reinforcing device for refractory air duct for nuclear power and refractory air duct

A reinforcement device and fire-resistant technology, applied in the safety field of nuclear power plants, can solve problems such as difficult support, sunken or bent fireproof board 1', cracked collapse of fireproof board 1', etc., to ensure integrity, good overall strength, and stability sexual effect

Active Publication Date: 2022-02-18
SUZHOU NUCLEAR POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the upper fireproof board 1' is only supported by the fireproof boards 1' on both sides, when one side of the upper fireproof board 1' is longer, it is difficult for the fireproof boards 1' on both sides to effectively support the upper part. If there is no effective support inside the air duct, the upper fire-resistant board 1' is easily sunken or bent in the middle due to its own gravity, resulting in weakened overall strength of the upper fire-resistant air duct
In addition, the pressure inside the fire-resistant air duct is fluctuating in an unsteady state, which intensifies the risk of cracks or even collapse in the middle position of the upper fire-proof board 1', which will further weaken the strength of the fire-resistant air duct after long-term operation

Method used

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  • Reinforcing device for refractory air duct for nuclear power and refractory air duct
  • Reinforcing device for refractory air duct for nuclear power and refractory air duct
  • Reinforcing device for refractory air duct for nuclear power and refractory air duct

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This implementation example provides a reinforcement device 100 for a fire-resistant air duct for nuclear power.

[0028] The first thing to explain is that the fire-resistant air ducts involved in this implementation example are widely used in the important ventilation systems of nuclear power plants. At present, many domestic PWR nuclear power plants have fire-resistant air ducts of this material. According to on-site observation, this kind of PROMATECT-L500 large-section fire-resistant air duct is prone to cracks and collapse defects in the absence of internal reinforcement. The reinforcement device 100 provided in this implementation example can optimize this defect, so that the fire-resistant air duct can be effectively supported, the strength of the fire-resistant air duct can be guaranteed, and the integrity of the important ventilation system of the nuclear island can be ensured.

[0029] see figure 2 and image 3 , the reinforcing device 100 includes an uppe...

Embodiment 2

[0042] This implementation example provides a fire-resistant air duct 400 .

[0043] The fire-resistant air duct 400 includes a top wall (not shown), a bottom wall 42 and two side walls 43 connected between the top wall (not shown) and the bottom wall 42 , wherein the fire-resistant Multiple reinforcement devices 100 provided in Embodiment 1 are installed between the top wall (not shown) and the bottom wall 42 of the air duct 400 .

[0044] In this example, see Figure 4 , the length of the top wall (not shown) of the fire-resistant air duct 400 is 1200-2000 mm, and the fire-resistant air duct 400 has a row of reinforcing devices 100 arranged at equal intervals along the length direction, and two adjacent The spacing between the reinforcing devices 100 is less than or equal to 600mm.

[0045] In this embodiment, the fire-resistant air duct 400 has a better overall strength due to the installation of a row of reinforcement devices 100 between the top wall 41 and the bottom wa...

Embodiment 3

[0047] This implementation example provides a fire-resistant air duct.

[0048] The fire-resistant air duct includes a top wall, a bottom wall and two side walls connected between the top wall and the bottom wall, wherein a plurality of fire-resistant air ducts are installed between the top wall and the bottom wall The reinforcement device provided by Embodiment 1.

[0049] In this embodiment, the length of the top wall of the fire-resistant air duct is 2000-3000 mm, and there are two rows of reinforcement devices arranged at equal intervals along the length direction inside the fire-resistant air duct. The interval between the reinforcement devices is less than or equal to 600mm.

[0050] In this embodiment, two rows of reinforcing devices are installed between the top wall and the bottom wall of the fire-resistant air duct, so that the fire-resistant air duct has better overall strength, which can ensure the integrity of the important ventilation system of the nuclear islan...

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Abstract

A reinforcement device for a fire-resistant air duct for nuclear power and a fire-resistant air duct. The reinforcement device includes an upper top plate, a lower top plate, an upper support rod, a lower support rod, an intermediate connecting rod, an upper mounting plate, and a lower mounting plate; the upper end of the upper support rod is connected with the upper top plate, the lower end passes through the upper mounting plate and It is adjustable connected with the upper end of the intermediate connecting rod; the lower end of the lower support rod is connected with the lower top plate, the upper end passes through the lower mounting plate and is adjustable connected with the lower end of the intermediate connecting rod; the upper mounting plate is in at least one dimension The size on the top is greater than the size of the upper roof in the corresponding dimension; the size of the lower mounting plate in at least one dimension is greater than the size of the lower roof in the corresponding dimension; the upper roof and the lower roof are respectively connected with the fire-resistant air duct The top wall and the bottom wall abut; the upper mounting plate and the lower mounting plate are respectively fixed to the top wall and the bottom wall in the fire-resistant air duct. The reinforcement device enables the fire-resistant air duct to be effectively supported, strengthens the strength of the fire-resistant air duct, and ensures the integrity of the ventilation system.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant safety, in particular to the technical field of fire-resistant air ducts for nuclear power, and relates to a reinforcement device for fire-resistant air ducts for nuclear power and a fire-resistant air duct. Background technique [0002] At present, a fire-resistant air duct made of calcium carbonate is usually used in the ventilation system of the nuclear island of the domestic PWR nuclear power plant (such as DVC, DVE, DVG, DVH, etc.). The fire-resistant air duct has a certain fire resistance due to the material itself, so as to ensure that the ventilation system can remain intact within a certain fire time. This fire-resistant air duct is made of PROMATECT-L500 single-layer fireproof board 1', using "PROMACOL S" glue for joint sealing, and metal horse nails 3' for assembly (see figure 1 , figure 1 shows the structure of the refractory air duct). Wherein, the lower fireproof board...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/08
CPCF16L9/003F16L9/085
Inventor 金聪苏林白金川
Owner SUZHOU NUCLEAR POWER RES INST
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