Automatic fire extinguishing device for leakage of propylene loading and unloading vehicle

Abstract

The utility model provides an automatic fire extinguishing device for leakage of a propylene loading and unloading vehicle, which comprises a fire-fighting main pipe and a movable fire extinguishing robot, a main gate valve is arranged on the fire-fighting main pipe, and an external branch pipe is arranged close to the main gate valve. And a signal valve, a wet alarm bell and a water spraying device are sequentially arranged on the fire-fighting main pipe. A pressure gauge and a gate valve are arranged on the fire-fighting main pipe close to the wet alarm bell; the water spraying device comprises a plurality of water spraying branch pipes connected with the fire-fighting main pipe, the two ends of each water spraying branch pipe are each provided with a water mist nozzle, a water flow indicator is arranged at the position, close to the rightmost side, of the water spraying branch pipe, and an automatic exhaust valve is arranged at the position, close to the water spraying device, of the water spraying branch pipe; the tail end of the fire-fighting main pipe is connected into a trench, and a tail end pressure gauge and a tail end water testing valve are arranged on the fire-fighting main pipe close to the position where the fire-fighting main pipe is connected According to the utility model, unmanned operation of on-site fire extinguishing can be realized, conditions are created for on-site emergency disposal, personnel investment is reduced, and casualties and property loss are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to an automatic fire extinguishing device for leakage of propylene loading and unloading vehicles. Background Art

[0002] Propylene, an organic compound with the molecular formula C3H6, is a colorless, odorless gas with a slightly sweet smell. It is flammable and produces a bright flame when burned. Its explosive limit in air is 2% to 11.1%. It is slightly soluble in water and readily soluble in ethanol and ether. Propylene leaks are common in chemical production, causing significant damage, serious losses, and widespread impact.

[0003] Currently, domestic propylene loading and unloading trucks utilize a universal connection for filling with a crane pipe and are equipped with a breakaway valve and an emergency liquid-phase shut-off valve. This can, to a certain extent, mitigate the losses caused by initial accidents. However, on June 5, 2017, a liquefied hydrocarbon tanker truck in the storage and transportation department of Jinyu Petrochemical Co., Ltd. experienced a liquefied gas leak during unloading operations, resulting in a major explosion and fire, sounding the alarm for loading and unloading safety.

[0004] At present, there is no automatic fire extinguishing device specifically for propylene loading and unloading platform leakage in China. It is particularly necessary to study the fire-fighting facilities for liquefied hydrocarbon loading and unloading in the loading and unloading area to reduce accident losses and personal injuries. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides an automatic fire extinguishing device for leakage of propylene loading and unloading trucks. The present utility model is implemented through the following technical solutions:

[0006] The invention discloses an automatic fire extinguishing device for leakage of a propylene loading and unloading truck, comprising a fire main pipe and a mobile fire extinguishing robot. The fire main pipe is provided with a main gate valve, and an external branch pipe is provided near the main gate valve.

[0007] The fire main is also provided with a signal valve, a wet alarm bell and a water spray device in sequence.

[0008] A pressure gauge and a gate valve are provided on the fire main near the wet alarm; the water spraying device includes several water spraying branches connected to the fire main, and a water mist nozzle is installed at each end of the water spraying branch. A water flow indicator is provided near the rightmost water spraying branch, and an automatic exhaust valve is provided near the water spraying device; the end of the fire main is connected to the trench, and a terminal pressure gauge and a terminal water test valve are provided near the connection between the fire main and the trench.

[0009] The mobile fire-fighting robot is equipped with a 360° panoramic explosion-proof high-definition camera, which is connected to a display screen via a wireless Bluetooth transmission system.

[0010] As a preferred solution, the model of the fire main is DN150.

[0011] As a preferred solution, the model of the water spray branch pipe is DN50, DN65 or DN40.

[0012] As a preferred solution, the model of the external branch pipe is DN65.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can realize unmanned operation of on-site fire extinguishing, create conditions for on-site emergency response, reduce personnel input, and reduce casualties and property losses; the use of mobile fire-fighting robots can flexibly grasp the on-site leakage situation, provide command personnel with first-hand leakage information, and provide a basis for decision-making. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 It is a schematic diagram of the connection structure of the present utility model. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] An automatic fire extinguishing device for leaks from propylene loading and unloading trucks comprises a fire main 1 and a mobile fire extinguishing robot 2. The fire main 1 is provided with a main gate valve 3, and an external branch pipe 4 is provided near the main gate valve 3. The external branch pipe 4 can be connected to a water hose as a backup facility for fire disposal. The fire main 1 is also provided with a signal valve 5, a wet alarm 6, and a water spray device 7 in sequence. A pressure gauge 8 and a gate valve 9 are provided on the fire main 1 near the wet alarm 6.

[0018] The water spray device 7 includes several water spray branches 71 connected to the fire main 1, and a water mist nozzle 72 is installed at each end of the water spray branch 71. A water flow indicator 10 is provided near the rightmost water spray branch 71, and an automatic exhaust valve 11 is provided near the water spray device 7.

[0019] The end of the fire main 1 is connected to the ditch 12. The fire main 1 is provided with a terminal pressure gauge 13 and a terminal water test valve 14 near the connection with the ditch 12. The terminal pressure gauge 13 is convenient for detecting the terminal water pressure, and the terminal water test valve 14 can drain the terminal low point to meet the requirements of anti-freezing in winter.

[0020] The mobile fire-fighting robot 2 is equipped with a 360° panoramic explosion-proof high-definition camera 15 , and the 360° panoramic explosion-proof high-definition camera 16 is connected to a display screen 16 via a wireless Bluetooth transmission system.

[0021] Furthermore, the model of the fire main pipe 1 is DN150.

[0022] Furthermore, the model of the water spray branch pipe 71 is DN50, DN65 or DN40.

[0023] Furthermore, the model of the external branch pipe 4 is DN65.

[0024] The signal valve 5 receives the signal from the DCS control system in the central control room. The combustible gas detector uploads the detected combustible gas concentration signal to the DCS control system in the central control room. The DCS control system in the central control room transmits the received signal to the DCS control system in the central control room.

[0025] During initial installation and commissioning, open the main gate valve 3 and gate valve 9 on the fire main 1, open the signal valve 5, and check whether the water flow indicator 10, wet alarm 6, and sprinkler 7 are functioning properly. Debug the video transmission of the mobile fire-fighting robot 2 under this operating condition.

[0026] When a propylene leak occurs on-site, the combustible gas concentration near the leak point increases. The combustible gas detector transmits the detected combustible gas concentration signal to the DCS control system in the central control room. When the combustible gas concentration reaches 50%, an alarm is triggered, and signal valve 5 controls the wet alarm 6 to sound. Mobile firefighting robot 2 is remotely controlled to the leak point, confirm the leak, and transmit the on-site image to the monitoring equipment for reference by the command personnel. Firefighters manually confirm the corresponding conditions. After receiving the signal from signal valve 5, firefighting water enters the fire main 1 from the trench 12. Non-essential personnel on-site are evacuated, and sprinkler system 7 is activated. Water mist nozzles 72 spray and dilute the leak point, creating conditions for emergency operations. At the same time, the material valves between the loading and unloading platform and the tank area are shut off. Mobile firefighting robot 2 is remotely controlled to the leak point. A 360° panoramic explosion-proof high-definition camera 15 records the scene in real time and transmits the image to display screen 16 via a wireless Bluetooth transmission system to confirm the leak and provide reference for the command personnel.

[0027] The above is a detailed description of the specific implementation of the present invention, but it is only used as an example. The present invention is not limited to the specific implementation cases described above, and equivalent modifications to the present invention are also within the scope of protection of the present invention.

Claims

1. An automatic fire extinguishing device for leakage of propylene loading and unloading trucks, characterized in that: It comprises a fire main pipe (1) and a mobile fire extinguishing robot (2); the fire main pipe (1) is provided with a main gate valve (3), and an external branch pipe (4) is provided near the main gate valve (3); The fire main pipe (1) is also provided with a signal valve (5), a wet alarm (6), and a water spray device (7) in sequence; A pressure gauge (8) and a gate valve (9) are provided on the fire main pipe (1) near the wet alarm (6); The water spray device (7) includes a plurality of water spray branch pipes (71) connected to the fire main pipe (1), and a water mist nozzle (72) is installed at each end of the water spray branch pipe (71). A water flow indicator (10) is provided near the rightmost water spray branch pipe (71), and an automatic exhaust valve (11) is provided near the water spray device (7); The end of the fire main pipe (1) is connected to the trench (12), and the fire main pipe (1) is provided with a terminal pressure gauge (13) and a terminal water test valve (14) near the connection with the trench (12); The mobile fire-fighting robot (2) is equipped with a 360° panoramic explosion-proof high-definition camera (15), and the 360° panoramic explosion-proof high-definition camera (15) is connected to a display screen (16) via a wireless Bluetooth transmission system.

2. The automatic fire extinguishing device for leakage of propylene loading and unloading vehicles according to claim 1 is characterized in that: The model of the fire main pipe (1) is DN150.

3. The automatic fire extinguishing device for leakage of propylene loading and unloading vehicles according to claim 1, characterized in that: The model of the water spray branch pipe (71) is DN50, DN65 or DN40.

4. The automatic fire extinguishing device for leakage of propylene loading and unloading vehicles according to claim 1, characterized in that: The model of the external branch pipe (4) is DN65.

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