Fire extinguishing system for iodine removal unit

Abstract

The utility model discloses a fire-fighting system for an iodine removal unit, and particularly relates to the field of fire fighting, the fire-fighting system comprises a main pipe extending into the iodine removal unit, the end part of the main pipe is connected with a fire-fighting connecting pipe, and one end part of the fire-fighting connecting pipe is positioned outside the iodine removal unit and is provided with a fire-fighting joint communicated with an external fire extinguishing agent input pipe; the main pipe is composed of a plurality of combined pipes and telescopic pipe assemblies, the telescopic pipe assemblies are connected between any two adjacent combined pipes, the positions, located above the iodine adsorbers, of the two outer walls of each combined pipe are communicated with branch pipes, and a spray head is arranged at the end of each branch pipe. According to the utility model, during installation, adjustment and installation can be conveniently carried out according to the distance between two iodine adsorbers on the iodine removal unit, so that the position of the spray head can adapt to the positions of the iodine adsorbers, the adjustment is convenient, the applicability is strong, the assembly and disassembly are convenient, and the fire extinguishing precision is improved, so that quick fire extinguishing is realized, the loss is reduced, and the influence on the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of fire protection, and more specifically, to a fire protection system for an iodine removal unit. Background Art

[0002] In nuclear power plants and other industrial sectors involving radioactive iodine treatment, iodine removal units are critical equipment, tasked with absorbing and removing radioactive iodine from the air. Iodine adsorption units, core components within these units, typically use materials such as activated carbon as an adsorption medium to efficiently capture and immobilize iodine, thereby ensuring environmental and personnel safety. However, with increasing operating time and changes in the external environment, potential fire risks arise within the iodine adsorption units. This is especially true when combustible materials such as activated carbon ignite due to various factors (such as high temperatures or short circuits), posing a serious threat to the safe operation of the unit and the surrounding environment.

[0003] Currently, the firefighting method commonly used within iodine removal units is mainly the flooding fire extinguishing system. This type of system sprays a certain concentration of fire extinguishing agent (such as carbon dioxide, dry powder, etc.) into the protected area to achieve the purpose of fire extinguishing. Although the flooding fire extinguishing system can control the spread of fire to a certain extent, it has the following disadvantages in actual application:

[0004] 1. Slow fire extinguishing speed: The flooding fire extinguishing system takes a certain amount of time to reach a sufficient concentration of fire extinguishing agent to suppress the flame. During this process, the fire may have caused a certain degree of damage to the internal equipment of the unit;

[0005] 2. Low fire extinguishing efficiency: Due to uneven distribution of fire extinguishing agent or limited spray angle, some fire sources may not be covered in a timely and effective manner, resulting in poor fire extinguishing effect. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a fire protection system for an iodine removal unit.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a fire protection system for an iodine removal unit, comprising a main pipe extending into the interior of the iodine removal unit, an end of the main pipe being connected to a fire protection connecting pipe, one end of the fire protection connecting pipe being located outside the iodine removal unit and provided with a fire protection connector connected to an external fire extinguishing agent input pipe;

[0008] The main pipe is composed of several combined pipes and telescopic pipe assemblies. Any two adjacent combined pipes are connected by a telescopic pipe assembly. The two outer walls of each combined pipe are located above each iodine adsorber and are connected to branch pipes. The end of each branch pipe is provided with a nozzle.

[0009] As a further improvement of the technical solution of the present utility model, the fire-fighting connecting pipe, fire-fighting joint, combined pipe and branch pipe are all made of stainless steel.

[0010] As a further improvement of the technical solution of the present invention, a fixing frame is welded to the top outer wall of each combined tube, and the fixing frame is made of stainless steel.

[0011] As a further improvement of the technical solution of the present invention, first flanges are provided at both ends of each of the combined pipes, and the telescopic pipe assembly is connected to the combined pipe via flange bolts.

[0012] As a further improvement of the technical solution of the present invention, the telescopic tube assembly includes a telescopic hose, and both ends of the telescopic hose are provided with a second flange that matches the first flange structure.

[0013] As a further improvement to the technical solution of the present invention, flange holes for bolt connection are provided at corresponding positions inside the second flange and the first flange, and a sealing ring is provided at the inner edge of the second flange.

[0014] As a further improvement of the technical solution of the present invention, the angle between the two branch pipes on each of the combined pipes is 150°, and the nozzle and the branch pipe are connected by threads.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a spray structure above each iodine adsorber on the iodine removal unit, connects a telescopic tube assembly between two adjacent combined pipes, the telescopic tube assembly itself can be freely telescoped and adjusted, and is sealed with a flange connection to the combined pipe, which is convenient for installation according to the spacing between the two iodine adsorbers on the iodine removal unit, so that the position of the spray head can adapt to the position of the iodine adsorber, is easy to adjust, has strong applicability, is convenient for assembly and disassembly, improves fire extinguishing accuracy, and evenly covers the fire extinguishing agent in the fire source area through an efficient spraying method, thereby achieving rapid fire extinguishing, reducing losses and lowering the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 For this utility model Figure 1 Enlarged view of part A.

[0019] Figure 3 It is a structural schematic diagram of the telescopic tube assembly in the utility model.

[0020] Figure 4 This is a cross-sectional view of the installation of the nozzle in the utility model.

[0021] The accompanying drawings are marked as follows: 1. Fire connecting pipe; 2. Fire joint; 3. Combined pipe; 4. Branch pipe; 5. Telescopic pipe assembly; 6. Fixing bracket; 7. Sprinkler; 301. First flange; 501. Telescopic hose; 502. Second flange; 503. Sealing ring; 504. Flange hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] As attached Figure 1-4 The fire protection system for an iodine removal unit shown in the figure includes a main pipe extending into the interior of the iodine removal unit, the end of which is connected to a fire protection connection pipe 1. One end of the fire protection connection pipe 1 is located outside the iodine removal unit and is provided with a fire protection connector 2 connected to an external fire extinguishing agent input pipe;

[0024] The main pipe is composed of several combined pipes 3 and telescopic pipe assemblies 5. Any two adjacent combined pipes 3 are connected by a telescopic pipe assembly 5. The two outer walls of each combined pipe 3 are located above each iodine adsorber and are connected to branch pipes 4. The end of each branch pipe 4 is provided with a nozzle 7.

[0025] As attached Figure 1-4 As shown, the fire connection pipe 1, the fire joint 2, the combination pipe 3 and the branch pipe 4 are all made of stainless steel, which is convenient for improving the overall structural strength of the sprinkler fire protection system.

[0026] As attached Figure 1 As shown, a fixing frame 6 is welded to the top outer wall of each combined pipe 3. The fixing frame 6 is made of stainless steel, which facilitates the connection and fixation of the fixing frame 6, thereby facilitating the stable lifting effect of the main pipe installed inside the iodine removal unit.

[0027] As attached Figure 1-3 As shown, both ends of each combined pipe 3 are provided with a first flange 301, and the telescopic tube assembly 5 is connected to the combined pipe 3 by flange bolts. The telescopic tube assembly 5 includes a telescopic hose 501, and both ends of the telescopic hose 501 are provided with a second flange 502 that matches the structure of the first flange 301. The second flange 502 and the first flange 301 are provided with flange holes 504 for bolt connection at corresponding positions inside. A sealing ring 503 is provided on the inner edge of the second flange 502 to facilitate the installation of the telescopic tube assembly 5.

[0028] As attached Figure 1 and attached Figure 4 As shown, the angle between the two branch pipes 4 on each combined pipe 3 is 150°, and the nozzle 7 is connected to the branch pipe 4 through a threaded connection, which facilitates the installation of the branch pipe 4 and the nozzle 7.

[0029] Working principle: This utility model designs a fire protection system for iodine removal unit. The specific structure is as shown in the attached manual. Figure 1-4 As shown, in the present technical solution, the main pipe is extended into the interior of the iodine removal unit, and a combination pipe 3 is arranged above each iodine adsorber on the iodine removal unit, and each combination pipe 3 is provided with two branch pipes 4 with an angle of 150°, and a nozzle 7 for spraying is provided at the end of the branch pipe 4, that is, a spray structure is provided above each iodine adsorber on the iodine removal unit, and a telescopic pipe assembly 5 is connected between two adjacent combination pipes 3. The telescopic pipe assembly 5 itself can be freely telescopically adjusted, and a flange sealing connection is adopted between the combination pipe 3, which is convenient for adjustment and installation according to the distance between the two iodine adsorbers on the iodine removal unit during installation, so that the position of the nozzle 7 can adapt to the position of the iodine adsorber, is easy to adjust, has strong applicability, is convenient for assembly and disassembly, improves the accuracy of fire extinguishing, and evenly covers the fire extinguishing agent in the fire source area through an efficient spraying method, thereby achieving rapid fire extinguishing, reducing losses and reducing the impact on the environment.

[0030] The drawings of the embodiments disclosed in the present invention only relate to the structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. In the absence of conflicts, the same embodiment and different embodiments of the present invention may be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fire protection system for an iodine removal unit, characterized in that: It comprises a main pipe extending into the interior of the iodine removal unit, the end of the main pipe being connected to a fire connection pipe (1), one end of the fire connection pipe (1) being located outside the iodine removal unit and provided with a fire connector (2) connected to an external fire extinguishing agent input pipe; The main pipe is composed of a plurality of combined pipes (3) and telescopic pipe assemblies (5), and any two adjacent combined pipes (3) are connected to a telescopic pipe assembly (5). The two outer walls of each combined pipe (3) are located above each iodine adsorber and are connected to a branch pipe (4). The end of each branch pipe (4) is provided with a nozzle (7).

2. The fire protection system for the iodine removal unit according to claim 1, wherein: The fire-fighting connecting pipe (1), the fire-fighting joint (2), the combined pipe (3) and the branch pipe (4) are all made of stainless steel.

3. The fire protection system for the iodine removal unit according to claim 1, wherein: A fixing frame (6) is welded to the top outer wall of each combined tube (3), and the fixing frame (6) is made of stainless steel.

4. The fire protection system for the iodine removal unit according to claim 1, wherein: Both ends of each combined pipe (3) are provided with a first flange (301), and the telescopic pipe assembly (5) and the combined pipe (3) are connected via flange bolts.

5. The fire protection system for the iodine removal unit according to claim 4, characterized in that: The telescopic tube assembly (5) comprises a telescopic hose (501), and both ends of the telescopic hose (501) are provided with a second flange (502) that matches the structure of the first flange (301).

6. The fire protection system for the iodine removal unit according to claim 5, characterized in that: Flange holes (504) for bolt connection are provided at corresponding positions inside the second flange (502) and the first flange (301), and a sealing ring (503) is provided at the inner edge of the second flange (502).

7. The fire protection system for an iodine removal unit according to claim 1, characterized in that: The angle between the two branch pipes (4) on each combined pipe (3) is 150°, and the nozzle (7) is connected to the branch pipe (4) via a threaded connection.

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