With the transformation and development of the country's economy, it has become an indisputable situation for machinery to replace manpower. Various kinds of mechanical equipment that replaces manpower are convenient and quick to appear. Multi-purpose small-scale excavation machinery and equipment are used more widely, and the most widely used wheeled excavators are used. The machine is a hot spot for the current construction machinery, but now the brand models are complicated and the configuration is more and more high-end. So, how do you pick a small wheeled excavator that suits you? I believe that different people have different ways. Next, Xiaobian talks about the basic selection methods and gives some suggestions for those who want to start new things. A look at the shape: like the first appearance of this device gives the impression that the first impression, the current good-looking shape design is often more attractive to consumers, simply to see whether the equipment is high-end atmosphere. Speaking of tall, by the way, the Baoding BD95W-9 is a multi-purpose wheel excavator grab machine. In appearance, the Baoding BD95W-9 wheeled excavator grabs a large body design, and the overall design is relatively round. At first glance, it is pleasing to the eye. On the body, Baoding BD95W-9 wheeled excavator grabs the length and width of 6369X2030X2710, and the wheelbase is 2330mm. Compared with other brands of equipment, the size advantage is obvious, ensuring the stability of the body during work. B Look at the chassis: Even if the novice does not know how to look at it, see if the chassis of the equipment is strong and see if it is strong. The robustness of the wheeled engineering machinery chassis is self-evident. Simply look at the robustness of the chassis and test drive to the uneven road. Feel the loose feeling of the chassis. C Check the power system: The engine is always one of the important components in the mechanical equipment, which is related to the power problem of the vehicle. When checking the engine, first look at the engine's brand configuration parameters and the engine's production time. It is very important to pay attention to the purchase when the engine is pressurized, whether it is EFI or direct injection (about wheel excavator grab engine power) The choice of spray or direct injection has already been explained in the front. Please refer to: Baoding BD95W-9 wheeled wood grabber model, two technical configurations, each feature introduction), look at the engine to see if there is any sign of idle speed, see Look at the exhaust pipe for obvious black smoke. æŽå¸¦ mention Baoding BD95W-9 wheeled excavator grab machine using EFI / direct injection two supercharged engines as power output components, to meet the needs of more users, the maximum power of 65 kilowatts boost, to meet the national three emissions demand. DView the brand of hydraulic system: This is more difficult for newcomers. At least you can check whether the brands of major hydraulic components such as hydraulic pump valve rotation are imported brands. At least you should know the tight parts like hydraulic system. It is more reliable to choose imported parts, and then simply try to see if the action of the whole vehicle is soft and stable, and there will be no feeling that the action is too hard and intermittent. EDetecting the cab: Check whether the various buttons, switches, etc. are valid against the manual. The adjustment of lighting, sound, air conditioning, seats, wipers, etc., must be patient, one by one test, and also look at the corresponding situation when the instrument works. It can be seen from the above that if you want to pick a suitable multi-purpose wheeled excavator grab machine, you must learn to look at it, manually, and listen to it, so that you can buy equipment that is cost-effective and you don’t regret it. The market usage of equipment can still be included in the reference opinion, but this is not the main basis, and the technology will improve again! (This article is from Baoding Machinery)
High flux tube is a kind of high efficiency heat exchanger tube which sinters a layer of porous surface with special structure on the inner surface of ordinary heat exchanger tube by powder metallurgy method.
High flux tube can be classified into three groups: Sintered high flux tube, Sprayed high flux tube and Machined high flux tube. Among them, sintered high flux tube is the most expensive for its complex processing method and high efficiency; machined high flux tube is applied to mediums with high surface tension, its performance is in between; sprayed high flux tube is the cheapest for its easy process and low efficiency.
Compared with the bare tube, the sintered surface porous tube has the following advantages:
(1) it can significantly enhance the boiling heat, reduce the heat transfer area of about half, and have broad application prospects in the chemical and petrochemical plants such as large ethylene and large aromatics.
(2) in a very small difference in the maintenance of boiling, low taste energy recovery and low temperature boiling heat transfer has a great value, can be used to reduce the temperature of the heating steam.
(3) the critical heat load is more than 50% higher than that of the ordinary pipe.
(4) has good scale inhibition performance.
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• The holes in the surface porous layer are connected with the holes, which can significantly enhance boiling heat transfer. With grooves on the outer surface, the heat transfer effect can be increased by more than 10 times.
• High Flux Tube is tube element with the highest heat transfer coefficient up to now.