Professional equipment X necessary to talk about the body structure
The car, after 130 years of ups and downs, has changed too much. The steering wheel, suspension, transmission system, seats, etc., have lost sight of the original shadow. Perhaps the only thing that will remain unchanged is that A few wheels now. Of course, the automotive industry is also continuously improving, such as mass production, light weight, and platform production. The biggest advancement in the automotive industry is the establishment of a body structure system.
At present, the rapid development of the automobile industry is due in large part to the advancement of body manufacturing technology. In the field of passenger cars, passenger cars are mostly used; in the field of commercial vehicles, non-bearing cars are the world. However, the load-bearing body and the non-loaded body are only one collective name.
Non-bearing body, which is a structure in which the body and the frame are separated, wherein the frame is a total skeleton for the installation of the vehicle load-bearing, driving, transmission, etc., while the body is mounted on the frame for manned or loaded cargo. The general term for various box-shaped components and covers. The load-carrying body is an overall box structure that combines the frame and the body. Because there is no independent frame, so that the entire body (integral rigid frame made of bottom plate, skeleton, inner and outer skin, roof welding, etc.) is all involved in carrying, so called "bearing type body." It is mechanically a "stress shell structure."
Of course, the body structure can also be divided into the following types: (1) frame type frame; (2) trapezoidal frame; (3) X type frame; (4) backbone frame; (5) platform type vehicle (6) Part of the frame; (7) Space truss frame.
Frame type frame, trapezoidal frame, X type frame, backbone frame, etc. are mostly used in commercial vehicles. The utility model has the advantages of good vibration-damping performance, good safety, protection of the underbody, simple process, easy modification, convenient maintenance and good body rigidity, and is suitable for vehicles with relatively large loads or off-road types.
Platform-type frames, some frame (also called semi-loaded body), and space truss frame are mostly used on cars. Their advantages are light weight, good processability, compact structure, and good safety. Among them, the space truss type frame can achieve better body strength than other types of body when the body weight is the same, but correspondingly, the space utilization rate is not very good, so currently it is only used in sports cars that do not require high space. on.
It is the progress of the body manufacturing system that has developed so many body structures that are applicable to various models. They are used in cars with different mission requirements, enriching our automotive market and contributing to human development.
Boiler auxiliary equipment mainly includes water supply equipment, ventilation equipment, fuel supply, slag removal and dust removal equipment, steam and water pipes and accessories, detection instruments and automatic control equipment.
1. Water supply equipment
It is composed of water treatment equipment, water supply tank and feed pump 24. Water treatment equipment is used to remove impurities in water, such as oxygen, calcium and magnesium ions, to avoid scaling and corrosion on the inner wall of steam boiler, and to ensure the quality of boiler water supply. The treated boiler feed water is lifted by the feed water pump and then sent to the upper drum through the economizer.
2. Ventilation
The ventilation equipment includes air supply fan, induced draft fan and chimney. Its function is to provide air for mule fuel combustion and lead out combustion product flue gas from the boiler, so as to ensure the normal combustion, and make the flue gas wash the heating surface at the necessary flow rate of 7a68696466fe78988e69d8331333433626465 to strengthen heat transfer. Finally, the stack with a certain height will exhaust the smoke to the atmosphere to reduce the smoke pollution and improve environmental health.
3. Fuel supply, slag removal and dust removal equipment
This is for conveying fuel to boiler, removing ash and purifying flue gas. Belt conveyor, ash conveyor, ash truck and dust remover, etc. For boilers that need to be pre processed with fuel, fuel preparation such as screening, crushing and coal grinding shall also be included. In addition, the dust remover or flue gas desulfurization and denitrification device installed in the flue at the tail of the boiler is an indispensable auxiliary equipment to reduce the smoke pollution and protect the environment.
4. Check instruments and automatic control equipment
In addition to water level gauge, pressure gauge, safety valve and other instruments installed on the boiler body, in order to supervise, regulate and control the safe and economic normal operation of the boiler equipment, a series of instruments, automatic boiler feed water regulating device, automatic fuel combustion control device, etc. are often installed. Some boiler rooms are also equipped with industrial television and remote control device and even more modern automatic control system, more Scientific supervision. Control boiler operation.
Boiler auxiliary equipment, not every boiler is equipped completely, but with the boiler capacity, type, fuel characteristics and combustion mode as well as water quality characteristics and many other factors to adapt to local conditions, adapt to the times, more practical requirements and objective conditions.
Carbon Enamel Pipe,Steel Tubes For Boilers,Boiler Heating Element,Boiler Air Preheaters
Jinan Yuanda Power Equipment Co.,Ltd. , https://www.jnyuandaboilers.com