Why does auto ignition occur? The traffic police believes that the inherent causes of automobile auto-ignition are mainly engine oil pollution. When the vehicle is modified, it does not pay attention to the fire protection of the line, the aging of the electric wire and no timely maintenance, aging of the turn signal combination switch, and the occurrence of “run†in the oil circuit. , burr, drips, leaks, and carburetor tempering phenomenon, connectors loose or rain erosion and lead to bad wire contacts and so on. In general, old cars have more self-ignition accidents, but new cars also suffer from spontaneous combustion. The vast majority are due to modification. New car owners generally provide vehicles with anti-theft devices, high-end audio, and improved styling. Air conditioners, etc. will be added. If the installers have a limited level of technology, many hidden dangers will be buried and spontaneous combustion will be inevitable. In addition, the aerial vehicles travel long distances and are overloaded so that the engine components will continue to operate for a long time. Caused by the temperature rise, coupled with the hot weather, the engine ventilation equipment is not good, resulting in a short circuit power cord, but also easily lead to spontaneous combustion. Spontaneous combustion of a car generally has a process. At the beginning, the dashboard may start to emit black smoke and burnt. When the owner sees the smoke, he should immediately stop and turn off the power. The first time, he can find out exactly where the fire is and extinguish it with a fire extinguisher. If it is found to be relatively late and the fire is heavy, you should leave the scene as soon as possible and report the fire to the police as soon as possible. The driver should not hurry to rescue the vehicle’s belongings and prevent accidental burns. The aerial vehicle manufacturer reminds the driver that the fire extinguisher is the equipment that must be carried with the vehicle . If it is a dry powder fire extinguisher, it is best to go to the local fire equipment store once a year to see if it can be used normally. Reverse Circulation Water Well Drilling Rig Reverse circulation (or RC as it`s more commonly known) drilling is an essential tool in the mining industry. In addition to other oil rigs and drill rigs, reverse circulation drills assist in the productivity and accuracy in mining jobs.
It is the preferred method of mineral exploration, drilling and in-pit grade control because it is fast and cost-effective.
What is RC Drilling?
Reverse circulation drilling is the predominant technique based on a number of advantages.
Reverse Circulation drilling rig for water well investigation,mineral ores survey Henan YK Prospecting Machinery Co., Ltd , https://www.yydthdrillingrig.com
RC drilling is a drilling method involving a large rotary drill and Air Compressor that yields high quality mineral and rock samples, free from contamination and material interference.
Much like air core drilling, RC drilling returns cutting to the surface through an inner tube inside the rod. This is achieved by blowing air down the rods at a rate up to 1500 Pascals. This creates a pressure differential that pushes cuttings and water up via air lift.
The drilling component is powered by a pneumatic reciprocating piston (also known as the hammer), which drives a steel drill bit.
The two most commonly used drilling bits in RC systems are the fixed cutter and roller cone, both of which are advantageous depending on the project and geographical location of the site.
RC drilling is primarily used on large machinery and drill rigs and often goes to depths of 500 metres.
High quality RC equipment also has the ability to dry out the rock with large air compressors before the drill hits, which provides dry rock chips and, in turn, better samples.
.A higher percentage of uncontaminated cuttings
.Drilling rate similar to open hole drilling, but can often be faster and penetrate greater depths
.One of the most accurate drilling methods
.Quick retrieval of sample rates
.Dry samples allow for easier analysis
Dry and dry, easy to cause fire, hot summer is also a frequent occurrence of auto-ignition accidents, the owners and drivers of aerial vehicles should be careful. The traffic police department once analyzed the auto-ignition incident: in which the car fire is mostly, Occupying 40% or more; most of the fires in the vehicle's driving state are about 70%; the causes of the fire are mostly short-circuited wires, which account for more than 60%. The high-altitude vehicle manufacturers warn the drivers to carry fire extinguishers with them and check them regularly.