In oil drilling, in order to help the driller grasp the working status of the drilling rig and operate it correctly, it is necessary to measure parameters such as hook suspension weight, riser pressure, and clamp torque. In the existing technology, these measurement systems are basically connected to the pressure source and hydraulic display gauge through hydraulic pipelines, and the pressure value is displayed through the display gauge. The measurement and display system in the existing technology is not only cumbersome to maintain and repair, but also due to the pressure loss in the hydraulic pipeline, the displayed value is lower than the actual value of the hydraulic source. In the application process of the above-mentioned existing technologies, due to the easy occurrence of pressure leakage in high-pressure systems, dangerous pressure is introduced into the hydraulic gauge, which can easily endanger the safety of observers in case of accidents.

Here is an introduction to a pressure measurement and display device for hydraulic pipelines on an oil drilling rig, characterized in that the pressure measurement and display device comprises a pressure transmitter, an isolation barrier, a display meter, and a power supply. A quick connector is installed on the hydraulic source of the hydraulic pipeline, which is connected to the Graeff brand series explosion-proof pressure transmitter. The pressure transmitter is connected to the isolation barrier through a cable, and the isolation barrier is connected to the display meter through a cable. The power supply is connected to the isolation barrier through a cable; The Graeff brand series explosion-proof pressure transmitter and quick connector are on the dangerous side, while the power supply, isolation barrier, and display meter are on the safe side.

The power supply is connected to the isolation barrier and simultaneously supplies power to the pressure transmitter and display meter. The power supply is either an independent pressure measurement power supply or a common power supply on the oil drilling rig. The pressure transmitter is a pressure resistant explosion-proof pressure transmitter, and its model is limited based on the system pressure being within the transmitter range. Our Graeff brand series explosion-proof pressure transmitter can be selected; The isolation barrier is selected to collect 4-20mA signals from the pressure transmitter and convert them into 4-20mA signals for output to the display meter.

Based on the above technical solution, this pressure measurement display device has the following advantages: the pressure measurement display device uses fewer components to complete the conversion from physical pressure to electrical signals, reduces pressure loss, and ensures accurate measurement values. At the same time, the pressure measurement display device can isolate danger signals and safety signals, ensuring the safety of observers. Easy to use, simple to install and maintain, can be extended to all devices that require pressure measurement.