The purpose of master's work.
The purpose of master's work is to study the jet absorber allows the discharged divert fluid from the valve control fluctuations in the generator outlet conduit.
Relevance of the topic
Along with oil and natural gas an important role in the fuel - energy balance - coal continues to play.
Large reserves of the successful solution of the tasks associated with the expansion of underground hydraulic coal mining, technical - economic indices is higher than with conventional technology. When the hydraulic method of labor productivity for the extraction of 1.5 times or more higher than the level achieved by the best teams of the industry, working with a mechanical body razrusheniya.
The high technical - economic indices, the decline in occupational injuries and labor intensity by the following main advantages of hydraulic technology:
- In the process of cleansing notch staff in the assigned space is at a distance no closer than 10 m from the bottom, which virtually eliminates the possibility of injury.
- The use of high-pressure water as a cutting tool eliminates the use of electricity and blasting in the slaughter of abatement, guarantees from the explosions of gas and coal dust.
- Hydraulic breaking of coal - the process of low operational and requires less labor.
- Excavation of the machine easier and less expensive machines used in the conventional technology.
- Dusty air close to the sanitary standards.
- Significantly reduced the risk of endogenous fires.
However, the construction of new hydraulic mines require large capital investments. It seems so promising direction of the positive qualities of hydraulic mining in the "dry" mines. One solution to this problem may be the use of hydraulic mining in the mines of the conventional technology.
Research Objectives, expected results
Ink absorber is provided for use in devices (gidroimpulsatorah) transforming a stationary fluid flow with the parameters of P up to 6.0 MPa (60 atm) and Q up to 0.05 m3 / s (200m3 / h) in the pulse, with increasing pressure at the outlet of the nozzle is operating at 2 - 2 , 5 times. The increase in pressure is due to the use of water hammer phenomenon.
These devices are designed to destroy the coal (as well as other solid materials) in the management of sewage and preparatory work as a hydraulic mines and the mines dry technology. To power these devices use pumps or central nervous system CNS 300x600 300H1040.
The water supply to these devices directly to the slaughter carried out by a flexible hose to an appropriate pressure, diameter of not less than 100 mm. In an elaborate hydraulic mine (or dropped from the discharge water) do not need to take on the second line, as It is used to transport coal to the soil recaptured. Technology in the mines dry, this water is discharged from the bottom. Typically, moisture of the coal transported on these mines should not exceed 9-10%. The constituent elements are gidroimpulsatora stroke pipeline gidropnevmoakkumulyator, oscillator, the executive body (the trunk of a nozzle). Commissioning gidroimpulsatora and stop by using the control valve is discharged into the atmosphere of different amounts of water (depending on paper) - from 5 to 8 m3 / h In order to remove the bottom of the unproductive part of the liquid flowing from the valve control oscillator (5 - 8 m3 / h), it became necessary to the direction of the pipe conveying water from the nozzle discarding.
This problem can be solved with the help of jet absorber calculations is directed to this work.