5results about How to "Realize leak detection" patented technology

The utility model belongs to the technical field of ball valves, and particularly relates to a high-pressure ball valve sealing device which comprises a lubricating pipe, a through hole is formed in the lubricating pipe, a U-shaped pipe is connected to the outer wall of the lubricating pipe, a connecting pipe is connected to the middle end of the U-shaped pipe, a rod barrel is connected to one end of the connecting pipe, a movable rod is slidably installed at one end of the rod barrel in a penetrating mode, and a piston is fixedly connected to one end of the movable rod. A connecting plate is fixed to the other end of the movable rod, a telescopic rod is connected to the outer wall of the U-shaped pipe, the telescopic rod is opened, the acting end of the telescopic rod drives the connecting plate to move, and therefore the movable rod and the piston can be driven to reciprocate in the rod barrel, and in the telescopic rod shortening process, the piston can convey lubricating oil in the rod barrel into the lubricating pipe through the U-shaped pipe; and finally, the lubricating oil flows into the surface of the valve element through the through hole, so that the lubricating oil is uniformly smeared on the surface of the valve element, the friction force between the valve body and the valve element is reduced, and the sealing performance between the valve element and the valve body is improved.

The utility model discloses an ultrafiltration centrifugal tube sealing performance detection device which comprises an air inlet pipe used for injecting air into an ultrafiltration centrifugal tube, an air pressure detector used for detecting the air pressure of the air in the ultrafiltration centrifugal tube, and an air stop valve used for controlling the air inlet of the air inlet pipe, and the air stop valve and the air pressure detector are installed on the air inlet pipe. A gas outlet of the gas inlet pipe is connected with a silicon rubber plug used for sealing the open end of the ultrafiltration centrifugal tube, and the silicon rubber plug is provided with a through hole communicated with the gas outlet of the gas inlet pipe. According to the utility model, the sealing performance of the ultra-filtration centrifuge tube can be detected, whether the ultra-filtration centrifuge tube leaks or not is detected through the change of the air pressure of the air in the ultra-filtration centrifuge tube, and the detected ultra-filtration centrifuge tube can still be used.

This invention discloses a waterproof testing device for electrical control cabinets. The invention relates to the field of control cabinet testing technology and includes a base; a water tank filled with water is fixed to the left side of the top surface of the base; a frame with a concave structure is fixed to the top surface of the base, and a first hydraulic cylinder is fixed to the top surface of the inner wall of the frame. A base block with a rectangular block structure is fixed to the extended end of the first hydraulic cylinder, and two spring rods are fixed to the bottom surface of the base block. Multiple testing methods are combined to ensure comprehensive testing: a first testing component performs basic sealing tests by observing air bubbles after immersing the control cabinet in the water tank; a second testing component increases the pressure inside the water tank by connecting an air inlet pipe to an air pump, allowing for more in-depth leakage testing. The two testing methods work together to test the sealing of the control cabinet under different pressure environments, ensuring accurate and reliable test results.

The present invention discloses a sealing effect detection device and a quantitative evaluation method for a drainage borehole, which relates to the field of gas extraction detection technology. The quantitative evaluation method increases the pressure in the pipeline to a set value at the initial stage of extraction and then closes it. It determines whether there is air leakage in the hole by monitoring the change value of the air pressure in the hole, monitors the air flow outside the hole by a leak detection fan and a wind speed sensor, and determines whether the leakage type is crack leakage in the borehole or crack leakage outside the borehole. The extraction borehole is divided into zones, and the extraction probe detects the gas volume fraction and flow difference at different positions to accurately identify the location of the leakage. In the middle stage of extraction, by obtaining the leakage ratio of the extraction borehole during the extraction cycle, that is, taking the ratio of the average growth rate of the leakage volume in the extraction borehole to the gas extraction scalar attenuation fitting curve as an evaluation index, the borehole with leakage and repair value is identified, and the comprehensive quantitative evaluation of the repair value of the extraction borehole is achieved under the time effect, thereby establishing a complete new method system for accurate evaluation of the sealing effect.

The invention relates to the technical field of powder-liquid double-chamber bag detection, and discloses a powder-liquid double-chamber bag sealing detection device, comprising a detection box, a box cover is hingedly provided on the top of the detection box, a base for placing the powder-liquid double-chamber bag is arranged in the detection box, a pressure-supplying mechanism for applying pressure to the powder-liquid double-chamber bag on the base is provided on the box cover, a detection tray is provided at the bottom of the base, a waste liquid collecting mechanism, a drying mechanism and a cleaning mechanism are arranged in the detection box, the detection tray detects leaked liquid through a detector, the waste liquid collecting mechanism collects leaked liquid, the cleaning mechanism cleans the base and the waste liquid collecting mechanism, the drying mechanism cleans the base and the waste liquid collecting mechanism and then performs hot air drying, the device realizes multiple detection work of the powder-liquid double-chamber bag, including sealing detection of the finished powder-liquid double-chamber bag, sealing and penetration pressure detection of virtual welds, destructive detection of powder bags and liquid bags in different areas, and penetration pressure detection of virtual welds under simulated transportation conditions, and has strong practicality.