4results about How to "Reduce gas content" patented technology

This application relates to the technical field of ring main units, and discloses a primary and secondary integrated ring main unit with an adaptive intelligent anti-condensation system. The unit includes a housing with a placement slot, a cable compartment, and a control compartment. A first heat dissipation hole communicating with the placement slot is located on the side of the housing. A fan is located within the placement slot. The control compartment communicates with the first heat dissipation hole. A movable pipe communicating with the placement slot is located within the cable compartment, with the opening of the movable pipe located on the side of the control compartment near the fan. This application utilizes the mixing of outside air with humid air from the cable compartment. On one hand, the humid air directly participates in the heat exchange of the heating elements in the control compartment, carrying away heat. On the other hand, water vapor in the mixed gas, when flowing past the heating elements, can also absorb some heat due to its phase change (if it occurs) or its high specific heat capacity, further improving the heat dissipation effect of the control compartment.

The application relates to the technical field of new energy automobile battery replacement, and specifically discloses a lock body mechanism for new energy automobile battery replacement, which comprises a fixed shell, a nut connected to the inner side of the lower end of the fixed shell through a bearing, and a clamping spring arranged in the inner side of the lower end of the fixed shell. A drop-proof ring is in contact with and supports the upper surface of the clamping spring. A supporting spring is arranged on the outer side of the nut between the upper surface of the drop-proof ring and the lower surface of the upper end of the nut. A pneumatic sealing mechanism is installed on the nut. The upper end of the fixed shell is fixedly connected with a guide pipe coaxial with the fixed shell. The inner side of the guide pipe is provided with guide grooves at equal angles. A fixing bolt penetrates through the guide pipe. The application can prevent dust and sand from entering the thread structure between the fixing bolt and the nut, thereby ensuring that the fixing bolt and the nut can stably and effectively work.

This invention relates to the field of gas control technology in the re-mining of abandoned coal resources. It proposes a gas control method for the underground layout of roadways in the mining of abandoned coal pillar resources. Before re-mining, a hierarchical analysis method is used to conduct a gas risk assessment, quantify the risk, and classify the gas control levels. During tunneling, inorganic flexible foamed materials are sprayed onto the surrounding rock of the roadway to achieve physical isolation. Simultaneously, the ventilation system is optimized, employing a one-master-multiple-slave local ventilation fan group control strategy based on gas concentration feedback. After the working face is formed, cross-layer boreholes are drilled for pre-extraction of gas before long-term mining. During long-term mining, high-level boreholes are arranged in the conveyor belt roadway to extract gas for decompression. Stepping-type extraction pipelines are installed in the return air corners to control corner gas. A safety monitoring system is installed throughout the process to monitor harmful gases, and high-pressure water jet slit cutting technology is prepared as a permeability enhancement measure. This effectively reduces gas content and pressure, prevents gas accumulation and explosion, and ensures the safe and efficient re-mining of abandoned coal pillar resources.

This utility model discloses an oil injection system for CT X-ray tubes, belonging to the field of medical device technology. The oil injection system includes an oil storage tank, an ultrasonic gas separator, a vacuum negative pressure device, and an oil circulation device. The oil storage tank stores insulating oil; the ultrasonic gas separator is connected to the oil storage tank and is configured to remove gas from the insulating oil; the vacuum negative pressure device has a movable CT X-ray tube inside its cavity, connected to the ultrasonic gas separator, and connected to a negative pressure generator, configured to reduce the gas content inside the CT X-ray tube; the oil circulation device forms an oil injection circuit by connecting the CT X-ray tube and the oil storage tank, allowing insulating oil to be injected into the CT X-ray tube. Before being injected into the CT X-ray tube, the insulating oil passes through the ultrasonic gas separator, which removes gas from the insulating oil, thereby reducing the gas content and improving the imaging geometric accuracy of the CT X-ray tube.