Industry firefighting: Infrared thermal imaging technology intelligent monitoring of oil depot pump room

I. Background Overview

The pump house is the heart of the oil depot. It is the power source for the transmission and reception of oil depots, and is the most frequent place for oil depot operations. Pump room equipment is used in many operations, and it is easy to produce oil products that run out of control. Run, run, drip and leak phenomena occur from time to time. If the oil vapor concentration reaches the explosive limit range, it will explode in the event of an ignition source, causing a fire and causing significant losses.

Second, the pump room fire hazard - oil vapor

The source of oil vapor in the pump room is divided into oil vapor generated under normal conditions and abnormal conditions. Under normal circumstances, the generation of oil vapor mainly includes leakage of the mechanical seal of the oil pump, allowable oil dripping of the valve packing, leakage of the wire mouth, flanges, joints of the fasteners, and drip of the rotating parts of the oil pump, valve, etc.; When the filter is cleaned, the oil pump is inspected, the valve is replaced, and the gasket is replaced, the residual oil and oil vapor in the equipment overflow.

Under normal circumstances, the generation of oil vapor mainly includes: due to an operation error, the gasket or equipment of the oil delivery system in the pump room is suddenly damaged, and the oil vapor formed by the leaked oil is detected; the concentration of oil vapor is not detected before and after the operation and is not performed in time. Mechanical ventilation.

In addition, oil vapor accumulation due to irrational design: vacuum system process design, equipment installation is not reasonable, the part of the oil vapor emitted during operation is discharged into the pump room, or forms a cycle into the pump room; there is no ventilation in the pump room A dead corner; improper selection of mechanical ventilation equipment, exhaust air volume can not meet the requirements of ventilation and so on.

On September 7, 2010, China Petroleum's Fushun Petroleum No. 3 Plant caused an explosion due to a leak from the sealing of the P-308 hot oil pump in the aromatics plant of the plant.

On September 18, 2013, a fire broke out at the Logan International Airport in Boston, Massachusetts.

On the morning of April 22, 2016, a fire broke out at a pumping station in the Jiangsu Xingang Park, Jingjiang City, Jiangsu Province. The fire site was a pipe that ignited an adjacent gasoline tank.

In the early morning of June 12, 2017, Ruixin Jinhua New Energy Technology Co., Ltd. accidentally broke the oil pump pipeline and caught fire.

Third, what are the current solutions

The main solutions at the moment are:

1. The temperature detector and smoke detector are installed on the top and side of the pump house, but the temperature detector can only monitor the temperature of the equipment installation point, and the overall monitoring of the entire space oil pump room lacks practicality. The smoke detector needs an alarm in case of smoke, which is an after-effect alarm and has little effect on the temperature monitoring function of the oil depot.

2. Video surveillance: Install a video surveillance device to monitor the status of the fuel tank through visible light monitoring. However, it is not possible to monitor the temperature situation. It is monitored after the incident and cannot be used for preventive monitoring. Night monitoring depends on supplemental light to expose the location of the monitoring equipment, and the concealment of the equipment is poor.

Fourth, infrared thermal imaging technology to help the oil depot fire

In the natural world, all objects radiate infrared radiation of different wavelengths. Therefore, a special detection device can be used to detect the infrared wavelengths between the monitoring target itself and the background, so that different infrared images can be obtained. The same target thermal image and visible light image is different, the thermal image is the target surface temperature distribution map, or infrared thermal image is the target surface temperature distribution map that the human eye cannot directly see, and the temperature distribution is abnormal to the monitoring area. Situation identification provides an important and favorable basis.

According to the " GB50160-2008 petrochemical enterprises I designed fire code", " GB50016-2014 building design fire code", " GB50183-2004 oil and gas project design fire code" and the actual situation of the oil depot pump room, infrared thermal image The application of this technology to the pump room's special oil and gas environment has the following advantages:

1 , fire alarm

Since the infrared thermal imager is an imaging device that reflects the surface temperature of an object, it can be used as an on-site monitor in addition to nighttime. It can also be used as an effective fire alarm device. In the early stages of all firefighting hazards, the hazards are often hidden. Fire triggered. With existing common methods, it is difficult to find such hidden fire signs. Infrared thermography technology can quickly and effectively find these hidden fires, and can accurately determine the location and scope of the fire, through the smoke found that the fire point, so that early warning, early prevention and early extinguishing.

2. Target monitoring at night and in adverse weather conditions

At night, devices that require visible light cannot work properly. If artificial lighting is used, the target is easily exposed. If low-vision night vision equipment is used, it also works in the visible light range and still requires external light illumination. The infrared thermal imager passively accepts the target's own infrared heat radiation, and can work normally both during the day and night and will not expose itself. Similarly, under the adverse weather conditions such as rain and fog, infrared rays have strong ability to penetrate rain and fog. Therefore, at night and in bad weather conditions, infrared thermal imaging monitoring equipment can still monitor various targets normally.

3 , fire rescue

Because in the oil and petrochemical production plant area, it is highly prone to cause fire, and when a fire breaks out, if life is saved, it becomes a very tricky thing. Because of the scene of smoke, firefighters cannot find the trapped person effectively and accurately, but when the time delays, The lives of trapped people are even more dangerous. The smoke penetration and fogging function of infrared thermal image technology just compensates for this shortage.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.