Role of the water-gas dual-purpose valve:
1.Control the switching of water and gas:
During the operation of the water well drilling rig, water and gas are the two main working media. The water-gas dual-purpose valve can switch the flow of these two media through precise control. Usually, water is used to cool the drill bit, and gas (such as compressed air) is used to clean the debris in the borehole. The role of the valve is to select water or gas according to the needs of the operation to optimize the drilling efficiency and quality.
2.Keep the pressure stable:
The water-gas dual-purpose valve is also responsible for maintaining the water and gas pressure in the system to ensure that the hydraulic system can operate stably. If the pressure is unstable, it will cause the rig power system to be unbalanced, thereby affecting the drilling progress or causing equipment damage.
3.Prevent system shock:
Due to the different characteristics of water and gas, improper use may cause pressure shock in the system. The water-gas dual-purpose valve avoids excessive or low pressure in the hydraulic system through precise pressure regulation, thereby protecting the safe operation of the drilling rig.
4.Improve drilling efficiency: By switching the use of water and gas reasonably, the cleaning efficiency and cooling effect of the drill bit can be improved, thereby accelerating the drilling operation. Using water when the mud layer is thick and using gas in the rock layer or hard formation can improve the working efficiency of the drilling rig.
How to use the water-gas dual-purpose valve:
1.Select the medium according to the working conditions:
When drilling a water well, choose to use water or gas according to the geological conditions. When the drilling depth is shallow, the borehole diameter is small, and the mud layer is large, water is used to cool the drill bit and take away the debris; when drilling deep wells, hard rocks, or high-speed drilling is required, gas is used to clean the debris in the hole and provide additional pressure to help the drill bit cut into the formation more smoothly.
2.Adjust the valve pressure:
The water-gas dual-purpose valve is usually equipped with a pressure regulating device. When operating, the output pressure of the valve needs to be adjusted according to the specific work requirements. The pressure of water is usually low, but sufficient flow and cooling effect must be guaranteed; while the pressure of gas is usually high, and it is necessary to ensure that it is used within the appropriate range to avoid gas shock or system damage.
3.Switching media:
During the drilling process, when it is necessary to switch from water to gas or vice versa, the operator can switch through the water-gas dual-purpose valve. When switching, ensure that all connecting pipes and valves are well sealed to prevent leakage and equipment damage. When operating, stop the flow of water or gas before switching to avoid valve damage or improper operation.
5.Regular inspection and maintenance:
The service life of the water-gas dual-purpose valve is closely related to its maintenance. During use, the valve’s sealing and control accuracy must be checked regularly. Make sure that the valve seal is not worn, the valve body is not cracked, and the operating rod is not stuck. If an abnormality occurs, the machine should be shut down for inspection and maintenance in time to avoid equipment failure affecting the entire drilling progress.
6.Cleaning and preventing blockage:
The working environment of the water well drilling rig is complex, and the water may contain sand or other impurities, which are easy to accumulate inside the valve and cause blockage. To avoid this, clean the valve filter regularly to keep the flow smooth.
Summary:
The dual-purpose valve for water and gas plays a critical role in hydraulic water well drilling rigs. It ensures the smooth progress of drilling operations by accurately controlling the flow and pressure of water and gas. Operators need to be proficient in its use, including selecting appropriate media, adjusting pressure, switching media, regular inspections, etc., to ensure efficient and safe operation of the drilling rig.
