Ball valve selection method: The working principle of the ball valve is to rotate the ball to make the valve clear or blocked. Ball valve switch is light, small size, can be made of large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and the spherical surface is often closed, easy to be media erosion, widely used in various industries. Ball valve can be roughly divided into 19 categories, there are floating ball valve, fixed ball valve, metal seal ball valve, V-type ball valve, wafer type ball valve, ball valve insulation, pipeline ball valve, ball valve, Three-way (Stone) ball valve, threaded ball valve, integral ball valve, low temperature ball valve, bellows ball valve, eccentric hemisphere valve, all-welded ball valve, special ball valve. O-type ball valve with floating structure, the core is precision castings, hard chrome plated appearance, the seat metal or reinforced PTFE material, the flow channel mouth and pipe the same caliber, great flow capacity, flow resistance is extremely small, off When no leakage, the general do switch valve use, especially for high viscosity, fiber, granular media. V-type ball valve with a fixed structure, the core opened with a V-shaped incision, proportional control can be achieved, the flow rate characteristics for the approximate percentage. Ball valve wide range of applications, ball valve can be applied to: 1, nominal diameter from 8mm to 1200mm. 2, the nominal pressure from the vacuum to 42MPa. 3, the working temperature from -204 ℃ ~ 815 ℃. Especially in the petroleum, chemical, metallurgical and other departments, the use of soft sealing ball valve in flammable, explosive media equipment and piping systems, but should pay attention to fire and fire. Normally, the sealing performance is strictly controlled at two positions, the mud, wear and contraction channels, rapid opening and closing movements (1/4 turn on and off), high pressure cutoff (large pressure drop), low noise, cavitation and gasification, A small amount of leakage to the atmosphere, the operating torque is small, the fluid resistance of small pipe systems, the recommended use of the ball valve. Ball valve is also suitable for light structure, low pressure cutoff (small pressure difference), corrosive medium piping system. Ball valves are also available in cryogenic (cryogenic) systems and piping systems. When required to have regulatory performance, the need to use a special structure with a V-shaped opening ball valve. In petroleum, petrochemical, chemical, electric power, urban construction, the working temperature above 200 ℃ piping system can choose metal to metal sealed ball valve. Oxygen piping systems in the metallurgical industry require the use of carefully degreased ball valves. In the oil pipeline and gas pipeline in the main line to be buried in the ground, you need to use full-bore welded ball valve. Ball valve is widely used in irrigation systems, mainly used in the branch pipe imports. Ball valve structure is simple, small size, resistance to water flow is also small, the disadvantage is that open or close too fast, will produce water hammer in the pipe (water pipe pressure suddenly changes in the pressure will rise). Therefore, the main pipe should not be used on the ball valve, can be used in the dry, branch or at the end for flushing purposes, flushing sewage effect is good. The main products are pneumatic valve pneumatic valve, pneumatic valve, pneumatic valve, pneumatic butterfly valve, electric butterfly valve Welcome to visit and buy. Search Keyword: Jiuding Automatic Control Equipment Co., Ltd.
Mutifunction Drilling Rig
Product Description
The water and air dual purpose series drilling rig is a multifunctional drilling rig that integrates water and air drills. This is the first one in China. The drilling rig adopts an AMT manual automatic transmission. Sensitive and convenient switching between positive and negative. Compared with hydraulic transmission, the power consumption is reduced by 35%, making it more efficient and energy-saving. The drilling rig has a fast speed and can be used in conjunction with a Mud Pump to solve the problem of difficult drilling with a soil gas down-hole hammer. The boring machine has high torque and can slide up and down. Deep hole drilling can be used for hard rock layers, gravel layers, and pebble layers below deep wells. Drill with a down-hole hammer. This drilling rig can be professionally engaged in drilling, monitoring wells, geothermal air conditioning drilling, diamond bit wired coring drilling, and engineering geological survey operations.
The main characteristics of the drilling rig:
1. The drilling rig is equipped with a hydraulic drill tower, hydraulic support legs, and a winch, and the power head can slide up and down. Hard rock can be used for DTH hammer drilling.
2. The drilling rig adopts a long stroke dual speed mechanism and mechanical power head, with a power head stroke of 3400mm, which is used to improve drilling efficiency and reduce the occurrence of blockage and burning accidents.
3. The drilling rig adopts dual oil pumps for oil supply. When feeding, a single pump is used, and when lifting the drill pipe, a dual pump combination is used; Low power loss and short auxiliary time.
4. The drilling rig has reserved some functional interfaces in the hydraulic system, which can be expanded according to the process requirements of different users.
Mutifunction Drilling Machine,Multi Purpose Drilling Rig,Multi Function Drilling Machine,Multipurpose Drilling Rig
JIANGSU XI TEC ENVIRONMENTAL&DRILLING EQUIPMENT COMPANY CO.LTD , https://www.sjxitecdrilling.com