Multifunctional fire-fighting conversion device for nuclear power plant

Abstract

The invention particularly provides a nuclear power plant multifunctional fire-fighting conversion device which comprises a conversion connector, a branch connector and a ball valve, the diameter of the conversion connector is DN40, and the conversion connector is connected with a standard fire-fighting connector on a fire-fighting system pipeline; the number of the branch connectors is two, the branch connectors are arranged to be different in size and model and connected with the conversion connector through Y-shaped communicating pipes, a ball valve is installed at the front end of each branch connector, and the ball valves can control the water supply condition of the device through opening and closing. Through the arrangement of the two different types of branch connectors, communication use of a standard fire-fighting connector and a national standard fire-fighting connector can be achieved, the structure is simple, and practicability is high; the device is suitable for most of domestic pressurized water reactor nuclear power plants such as an M310 unit and a Hualong No.1 unit, and is high in universality; and meanwhile, by adopting a detachable design, the device can be used as a tool to be carried by a firefighter, can also be fixedly mounted in a fire extinguishing system, and is convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of firefighting and rescue, and in particular to a multifunctional firefighting conversion device for a nuclear power plant which is compatible with a variety of firefighting interfaces. Background Art

[0002] Currently, domestic fire brigades use interfaces that match the openings of indoor and outdoor fire hydrants (commonly DN65 / DN80), employing bayonet connections or bayonet-to-quick-connect adapters. However, some nuclear power plants, such as the M310 / Hualong One nuclear island building (including the combined pump room), only have French POK fire hose reels installed in their buildings, rather than conventional domestic indoor fire hydrants. Due to the differences in the POK reel interface, existing domestic interfaces cannot be used.

[0003] Fuqing Nuclear Power previously invented a pressure-reducing and pressure-stabilizing fire-fighting conversion interface for the nuclear island (patent number ZL202022748107.8), but it requires the connection between the fire hose reel and the pipeline in the original building to be removed before it can be connected and used. This is inconvenient and loses the original fire hose reel function. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional fire protection conversion device for a nuclear power plant, which can solve the problem that the French standard fire protection interface and the national standard fire protection interface used in nuclear power plants are not universal.

[0005] The technical solution of the present invention is as follows: a multifunctional fire protection conversion device for a nuclear power plant, the conversion device comprising: a conversion interface, a branch interface, and a ball valve. The conversion interface has a DN40 caliber and is connected to a French standard fire protection interface on a fire protection system pipeline. There are two branch interfaces, which are connected to the conversion interface via a Y-shaped connecting pipe. A ball valve is installed at the front end of each branch interface. The ball valve can control the water supply of the device by opening and closing.

[0006] Furthermore, the size of the conversion interface matches the French standard fire interface on the fire protection system pipe, and the device is filled with water through the fire protection system pipe.

[0007] Furthermore, the interface end of the conversion interface is provided with a tightening clamp, which can ensure that it can be tightly connected to the fire protection system pipe standard interface.

[0008] Furthermore, the tap interface includes a DN40 tap interface and a DN65 tap interface, wherein the DN40 tap interface can be connected to a French standard POK fire hose reel; and the DN65 tap interface can be connected to a national standard fire hose.

[0009] Furthermore, the DN65 tap can be replaced with a tap of a different caliber such as DN80 according to actual conditions.

[0010] Furthermore, when it is necessary to use the French standard POK fire hose to supply water, open the ball valve at the DN40 branch interface and close the ball valve at the DN65 branch interface; when it is necessary to use national standard fire fighting equipment such as national standard fire hoses for water supply, open the ball valve at the DN65 branch interface and close the ball valve at the DN40 branch interface.

[0011] Furthermore, the conversion interface and the branch interface can be connected to the Y-shaped connecting pipe by threaded connection, welding, etc.

[0012] Furthermore, the connection points between the conversion interface and the branch interface and the Y-shaped connecting pipe are all provided with rubber sealing rings of corresponding calibers to prevent water leakage during use.

[0013] Compared with the existing technology, the advantages of the present invention are:

[0014] 1. Through the setting of two different types of sub-interfaces, the French standard fire protection interface and the national standard fire protection interface can be connected and used. It has a simple structure and strong practicality. It is also suitable for most domestic pressurized water reactor nuclear power plants such as M310 units and Hualong One units, with strong versatility.

[0015] 2. Through the detachable design, it can be carried by firefighters as a tool, or it can be fixedly installed in the fire protection system, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a multifunctional fire protection conversion device for a nuclear power plant provided by the present invention;

[0017] In the figure: 1. Conversion interface; 2. DN40 tapping interface; 3. DN65 tapping interface; 4. Ball valve; 5. Ball valve; 6. Y-type connecting pipe; 7. Tighten the clamp. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. 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.

[0019] like Figure 1As shown, a multifunctional fire protection conversion device for a nuclear power plant includes a conversion interface 1, a tap interface, and a ball valve. The conversion interface 1 has a DN40 caliber size and can be connected to a French standard fire protection interface on a fire protection system pipeline. A tightening clamp 7 is provided at the interface end to ensure a tight connection when connected to the French standard interface. Water is supplied to the device through the fire protection system pipeline. There are two tap interfaces, namely a DN40 tap interface 2 and a DN65 tap interface 3. The DN40 tap interface 2 can be connected to a French standard POK fire hose reel; the DN65 tap interface 3 can be connected to a national standard fire hose. The two tap interfaces are connected to the conversion interface 1 via a Y-shaped connecting pipe 6. A ball valve is installed at the front end of each tap interface. The ball valve can control the water supply of the device by opening and closing. At the same time, the DN65 tap interface 3 can be replaced with a tap interface of different calibers such as DN80 according to actual conditions. The conversion interface 1 and the branch interface can be connected to the Y-shaped connecting pipe 6 by threaded connection, welding, etc., and the connection between the conversion interface 1 and the branch interface and the Y-shaped connecting pipe 6 is provided with a rubber sealing ring of corresponding caliber to prevent water leakage during use.

[0020] When the French standard POK fire hose reel is needed to supply water, open the ball valve 5 at the DN40 tap 2 and close the ball valve 4 at the DN65 tap 3; when the national standard fire fighting equipment such as the national standard fire hose is needed to supply water, open the ball valve 4 at the DN65 tap 3 and close the ball valve 5 at the DN40 tap 2.

[0021] The multifunctional firefighting conversion device for a nuclear power plant in this embodiment operates as follows: When a firefighting water supply is required at the nuclear power plant, the conversion interface 1 is connected to the French firefighting interface on the firefighting system pipe and the tightening clamp 7 at the interface end is tightened. Different taps are then selected based on the actual firefighting situation. When a French POK fire hose is required, the ball valve 5 at the DN40 tap 2 is opened and the ball valve 4 at the DN65 tap 3 is closed. The device then supplies water via the French POK fire hose. When national firefighting equipment, such as a Chinese standard fire hose, is required, the ball valve 4 at the DN65 tap 3 is opened and the ball valve 5 at the DN40 tap 2 is closed. The device then supplies water via the Chinese standard firefighting equipment.

[0022] In the description of the present invention, it should be noted that the terms "left end", "right end", "above", "below", "outside", "inside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0023] Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] The above-described embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A multifunctional fire protection conversion device for a nuclear power plant, characterized in that: The device comprises: a conversion interface (1), a branch interface and a ball valve (4); the conversion interface (1) has a DN40 caliber and is connected to a French standard fire interface on a fire protection system pipeline; there are two branch interfaces, which are connected to the conversion interface (1) via a Y-shaped connecting pipe (6); and a ball valve is installed at the front end of each branch interface, and the ball valve can control the water supply of the device by opening and closing.

2. The multifunctional fire protection conversion device for a nuclear power plant according to claim 1, characterized in that: The size of the conversion interface (1) matches the French standard fire interface on the fire protection system pipeline, and the device is fed with water through the fire protection system pipeline.

3. The multifunctional fire protection conversion device for a nuclear power plant according to claim 2, characterized in that: The interface end of the conversion interface (1) is provided with a tightening clamp (7), which can ensure that it can be tightly connected to the standard interface of the fire protection system pipeline.

4. The multifunctional fire protection conversion device for a nuclear power plant according to claim 1, characterized in that: The branch interface comprises a DN40 branch interface (2) and a DN65 branch interface (3), wherein the DN40 branch interface (2) can be connected to a French standard POK fire hose reel; and the DN65 branch interface (3) can be connected to a national standard fire hose.

5. The multifunctional fire protection conversion device for a nuclear power plant according to claim 4, characterized in that: The DN65 tapping interface (3) can be replaced with tapping interfaces of different calibers such as DN80 according to actual conditions.

6. The multifunctional fire protection conversion device for a nuclear power plant according to claim 1, characterized in that: When the French standard POK fire hose reel is used for water supply, the ball valve (5) at the DN40 tap joint (2) is opened and the ball valve (4) at the DN65 tap joint (3) is closed; when the national standard fire fighting equipment such as the national standard fire hose is used for water supply, the ball valve (4) at the DN65 tap joint (3) is opened and the ball valve (5) at the DN40 tap joint (2) is closed.

7. The multifunctional fire protection conversion device for a nuclear power plant according to claim 1, characterized in that: The conversion interface (1) and the branch interface can both be connected to the Y-shaped connecting pipe (6) by threaded connection, welding, etc.

8. The multifunctional fire protection conversion device for a nuclear power plant according to claim 1, characterized in that: The connection points between the conversion interface (1) and the branch interface and the Y-shaped connecting pipe (6) are all provided with rubber sealing rings of corresponding calibers to prevent water leakage during use.

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