Flue fire extinguishing device for VOCS (volatile organic compounds) oiling machine

Abstract

The utility model relates to a flue fire extinguishing device for a VOCS (volatile organic compounds) oiling machine, and belongs to the technical field of metallurgical mechanical equipment. Comprising a fire-extinguishing water supply pipeline, one end of the fire-extinguishing water supply pipeline is connected with a clean circulating water pipeline, and the fire-extinguishing water supply pipeline is connected with a plurality of branch pipelines; the branch pipelines are respectively connected with spray head units, a plurality of inner spray points are arranged in the flue, and the spray head units correspond to the inner spray points; a flame detector and a temperature sensing detector are arranged in the flue, the flame detector is used for detecting whether flames exist in the flue, and the temperature sensing detector is used for detecting the temperature in the flue; a deluge valve is arranged on the fire extinguishing water supply pipeline and is in signal connection with the flame detector and the temperature sensing detector; when the flame detector detects flames or the temperature sensing detector detects abnormal temperature, the deluge valve is opened, and the fire extinguishing water supply pipeline is in a conducting state. The system can extinguish fire in time, effectively control the flue fire, and guarantee safe and orderly production.

Description

Technical Field

[0001] This utility model relates to a method for treating VOCs. S The fire extinguishing device for the flue of the oiling machine belongs to the technical field of metallurgical machinery and equipment. Background Technology

[0002] In steel metallurgical enterprises, the application of hard film anti-rust paint to steel pipe surfaces is common. Typically, compressed air is used to atomize the paint, which is then sprayed onto the pipe surface through a mist nozzle. However, this process inevitably generates volatile gases. To address this, VOCs activated carbon adsorption + catalytic combustion devices are often installed to collect and treat the gases produced by paint volatilization. However, because the paint contains a certain proportion of thinner, some paint mist and mixtures will adhere to the inner wall of the pipes during waste gas treatment. If the pipes are not cleaned regularly, they can easily ignite upon contact with an open flame or due to aging and short circuits in the electrical wiring, potentially causing fires, equipment damage, and economic losses.

[0003] The internal layout of workshops in steel and metallurgical enterprises is typically quite compact, making it impossible to add separate fire pump rooms. Traditional fire extinguishing methods and equipment have many limitations in this specific scenario and cannot meet the actual needs. Under such environmental conditions, how to effectively control pipeline fires and ensure safe and orderly production has become a crucial problem that urgently needs to be solved. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a solution for VOCs, which is an improvement over the above-mentioned prior art. S The fire extinguishing device for the oiling machine flue can extinguish fires in a timely manner, effectively control flue fires, and ensure safe and orderly production.

[0005] The technical solution adopted by this utility model to solve the above problems is: a method for VOCs S A fire extinguishing device for a painting machine flue includes a fire extinguishing water supply pipe, one end of which is connected to a clean circulating water pipe. Several branch pipes are connected to the fire extinguishing water supply pipe. Sprinkler units are connected to each branch pipe. Several internal spray points are provided within the flue, and each sprinkler unit corresponds to one of the internal spray points. A flame detector and a temperature detector are installed within the flue. The flame detector detects the presence of a flame within the flue, and the temperature detector detects the temperature within the flue. A deluge valve is installed on the fire extinguishing water supply pipe, and the deluge valve is signal-connected to the flame detector and the temperature detector. When the flame detector detects a flame or the temperature detector detects an abnormal temperature, the deluge valve opens, and the fire extinguishing water supply pipe is in a continuous state. When the flame detector does not detect a flame or the temperature detector detects a normal temperature, the deluge valve closes, and the fire extinguishing water supply pipe is cut off.

[0006] The fire extinguishing water supply pipeline is equipped with a filter at the inlet end.

[0007] A pressure sensor is installed at the connection between the fire extinguishing water supply pipeline and the clean water circulation pipeline to monitor the supply pressure of the clean water circulation pipeline in real time.

[0008] Each nozzle unit includes multiple rain nozzles, which are evenly distributed circumferentially in the flue.

[0009] It is also equipped with an audible and visual alarm, which is connected to the flame detector and the temperature detector.

[0010] Compared with the prior art, the advantages of this utility model are: a method for VOCs S The fire extinguishing device for the oiling machine flue can extinguish fires in a timely manner, effectively control flue fires, and ensure safe and orderly production. Attached Figure Description

[0011] Figure 1 This invention provides an embodiment for VOCs. S Schematic diagram of the installation of the fire extinguishing device for the oiling machine flue;

[0012] Figure 2 This is a schematic diagram of the inside of the pipe;

[0013] Figure 3 This invention provides an embodiment for VOCs. S Schematic diagram of the fire extinguishing device for the flue gas duct of an oiling machine;

[0014] In the diagram: 1. Flue; 2. Fire extinguishing unit; 2.1 Fire extinguishing water supply pipe; 2.2 Y-type filter; 2.3 Deluge valve; 2.4 Branch pipe; 2.5 Deluge nozzle; 3. Internal spray point; 4. Flame detector; 5. Audible and visual alarm. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 , 2As shown in Figure 3, a fire extinguishing device for a VOCs oiling machine flue in this embodiment includes a fire extinguishing water supply pipe 2.1. One end of the fire extinguishing water supply pipe 2.1 is connected to a clean circulating water pipe. A Y-type filter 2.2 is installed at the inlet end of the fire extinguishing water supply pipe 2.1. The clean circulating water flowing out of the clean circulating water pipe is filtered by the Y-type filter 2.2 before entering the fire extinguishing water supply pipe 2.1 to remove any impurities that may be present in the clean circulating water. Several branch pipes 2.4 are connected to the fire extinguishing water supply pipe 2.1. Several internal spray points 3 are provided inside the flue 1. The branch pipes 2.4 are connected to nozzle units via high-pressure hoses. The nozzle units correspond to the internal spray points 3, thus forming a fire extinguishing unit 2. A flame detector 4 and a heat detector 5 are provided inside the flue 1. The flame detector 4 is used to detect whether there is a flame in the flue, and the heat detector 5 is used to detect the temperature inside the flue 1. A deluge valve 2.3 is provided on the fire extinguishing water supply pipe 2.1. The flame detector 4 and the heat detector 5 are respectively connected to the deluge valve 2.3 for signal transmission. When the flame detector detects a flame or the heat detector detects an abnormal temperature, the deluge valve opens, and the fire extinguishing water supply pipeline is in a conductive state. That is, the filtered water is distributed to each branch pipe through the fire extinguishing water supply pipeline, and then the sprinkler unit sprays water on the surface of the flue to extinguish the fire. When the flame detector does not detect a flame or the heat detector detects a normal temperature, the deluge valve closes, and the fire extinguishing water supply pipeline is in a cut-off state.

[0017] Pressure sensors are installed at the connection points between the fire extinguishing water supply pipeline and the clean circulating water pipeline to monitor the supply pressure of the clean circulating water in real time, ensuring that the supply pressure remains stable at 0.35 MPa. This meets the requirements for the working pressure of water mist nozzles in the "Technical Specification for Water Mist Fire Extinguishing Systems" GB50219-2014, ensuring that the deluge nozzles can effectively spray, forming a good fire extinguishing water mist to quickly reduce the temperature of the fire area and suppress the spread of fire. Utilizing the clean circulating water entering the workshop as the water source for the fire extinguishing water supply pipeline achieves efficient use of existing resources and avoids the high cost and space occupation of building a new fire pump room.

[0018] The sprinkler unit includes multiple deluge nozzles 2.5, which are evenly distributed circumferentially in the flue 1, greatly improving the fire suppression coverage and effectiveness, and enabling rapid and effective extinguishing of fire sources in various parts of the flue. The deluge nozzles are connected to branch lines via high-pressure hoses, which increases the system's flexibility and maintainability.

[0019] It is also equipped with an audible and visual alarm 5, which is connected to the flame detector and heat detector. When the flame detector or heat detector detects a fire signal, it immediately transmits the signal to the audible and visual alarm to issue an audible and visual alarm, and simultaneously transmits the signal to the control module. After receiving the signal, the control module quickly opens the deluge valve, enabling the fire alarm to be linked with the fire extinguishing operation. This allows for timely detection of the signal in the early stages of a fire and rapid activation of the fire extinguishing system, greatly improving the timeliness and effectiveness of fire extinguishing and minimizing fire losses.

[0020] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A method for VOCs S The fire extinguishing device for the flue of an oiling machine is characterized by: The system includes a fire extinguishing water supply pipeline, one end of which is connected to a clean circulating water pipeline. Several branch pipelines are connected to the fire extinguishing water supply pipeline. Sprinkler units are connected to each branch pipeline. Several internal spray points are provided within the flue, and the sprinkler units correspond to these internal spray points. A flame detector and a temperature detector are installed within the flue. The flame detector detects the presence of a flame within the flue, and the temperature detector detects the temperature within the flue. A deluge valve is installed on the fire extinguishing water supply pipeline, and the deluge valve is signal-connected to the flame detector and the temperature detector. When the flame detector detects a flame or the temperature detector detects an abnormal temperature, the deluge valve opens, and the fire extinguishing water supply pipeline is in a continuous state. When the flame detector does not detect a flame or the temperature detector detects a normal temperature, the deluge valve closes, and the fire extinguishing water supply pipeline is cut off.

2. A method for VOCs according to claim 1 S The fire extinguishing device for the flue of an oiling machine is characterized by: The fire extinguishing water supply pipeline is equipped with a filter at the inlet end.

3. A method for VOCs according to claim 1 S The fire extinguishing device for the flue of an oiling machine is characterized by: A pressure sensor is installed at the connection between the fire extinguishing water supply pipeline and the clean water circulation pipeline to monitor the supply pressure of the clean water circulation pipeline in real time.

4. A method for VOCs according to claim 1 S The fire extinguishing device for the flue of an oiling machine is characterized by: Each nozzle unit includes multiple rain nozzles, which are evenly distributed circumferentially in the flue.

5. A method for VOCs according to claim 1 S The fire extinguishing device for the flue of an oiling machine is characterized by: It is also equipped with an audible and visual alarm, which is connected to the flame detector and the temperature detector.

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