Floor "slow heat" Raiders
Summer wood floor "cooling heat" approach is probably the first three things to note: First of all, if the home has a wooden floor installed, be sure to stay, if it is true can not immediately stay, but also often insist on indoor ventilation, ventilation, cooling; Second, home As far as possible, the air conditioner should not blow against the floor. If it feels like the interior is boring, it can be properly humidified. In the end, when the owner goes out, he will probably have a good window and do not let the sun shine directly on the floor.
Floor "moisture proof" Raiders
To avoid the wooden floor swelling, deformation, and arching in the wet air during the dry season, consumers must first make a good first pass when purchasing floors. Professors in the industry pointed out that the scientific description of the raw materials and layout of high-quality wooden flooring can effectively avoid the problem of floor expansion and deformation caused by wet weather. For example, it has three layers of solid wood flooring. The top layer is made of solid wood, which is extremely good for abrasion resistance. The middle layer and the bottom layer are made of soft wood with soft texture and strong water absorption. Because it absorbs moisture very well, these corkboards greatly reduce the burden of the surface wood and then enable the surface of the wooden floor to remain strong, stable and beautiful in the dry season.
When moisture-proofing wood floors, in addition to the simple and timely closure of windows, often ventilated, there are two more professional methods: First, do more waxing maintenance. Wax can be applied about half a year, perhaps once a year, so that wood floors can be protected from the effects of moisture during the dry season and then they have the intention of extending their life. In addition, if the home is paved with solid wood flooring, you can think about adding a layer of clear varnish on the exterior, but the technical requirements for varnishing will be extremely high. If the construction team does not elaborate, it will have the opposite effect. Second, the exterior is covered with moisture-proof film. Nowadays, there are special moisture-proof membranes for the sale of wood flooring. This moisture-proof film for wood flooring can be applied to the exterior of wood flooring to prevent the appearance of wooden flooring from moisture. In addition, care should be taken not to allow moisture to enter the wooden floor when maintaining wooden floors. Such as mop to scrub the floor when wringing. When the wooden floor is found to have a moldy appearance on the outside, it can be timely mixed with a soft, bleaching water with a dilution ratio of :3, and then cleaned with a rag.
With the continuous development of drilling production, the use conditions of drilling rigs have become more and more diversified, and various types of drilling rigs have appeared accordingly. Factors affecting the type and composition of drilling rigs include drilling method, drilling depth, borehole size and drilling tool size, and drilling area conditions (such as electricity or fuel, transportation, and meteorological conditions).
1. According to drilling method
(1) Impact drilling rigs, such as wire rope impact drilling rigs (drilling rigs), vibration drilling rigs, etc.
(2) Rotary drilling rigs, such as those used in rotary drilling.
(3) Downhole power drilling tools, such as rotary drilling tools, turbo drilling tools, screw drilling tools, electric drilling tools, etc.
2. Divided by drilling depth
(1) Ultra-deep well drilling rig. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of more than 7000 meters, and a maximum hook load of more than 4,500 kN.
(2) Deep well drilling rig. The drill rod is 114 mm in diameter, the nominal drilling depth is 4000-7000 meters or more, and the maximum hook load is 2250-4500 kN or more.
(3) Drilling rigs for medium and deep wells. It adopts a drilling rig with a diameter of 114 mm drill pipe, a nominal drilling depth range of 1500-4000 meters or more, and a maximum hook load of 900-2250 kN or more.
Three, according to power equipment
(1) Diesel Engine-driven drilling rigs, which use diesel engines as power through mechanical transmission or hydraulic transmission.
(2) AC driven drilling rig, suitable for use in oil fields with industrial power grids.
(3) The drilling rig is driven by direct current, and the working unit is driven by a direct current motor.
Fourth, according to the driving mode
(1) Drive alone. Each working machine is driven by generators of different sizes, which are mostly used for electric drive. The transmission is simple and easy to install, but the power utilization rate is low and the total equipment mass is large.
(2) Unified drive. The three working units of drawworks, drilling Pump and turntable are driven by the same power unit. Most drilling rigs use this scheme. The unified drive can also include only one drilling pump, and the other drilling pump is driven separately. The unified drive drilling rig has high power utilization and can be adjusted mutually when the engine fails, but the transmission is complicated, installation and adjustment are troublesome, and the transmission efficiency is low.
(3) Group drive. The combination of power is between individual drive and unified drive. There are two options for three working machines. The power utilization rate of this kind of drilling rig is higher than that of a single drive, and the transmission ratio is simple to drive in a unified manner. Two sets of working machines can also be installed on different heights and scattered sites.
Oil Drilling Rigs,Mine Drilling Rigs,Water Well Drilling Rigs,Exploration Drilling Rigs
Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaous.com