33results about How to "Judging the service life" patented technology

The invention provides a detection system and method for the service life of a membrane module, which belong to the technical field of micro-filtration or ultra-filtration. The system comprises a water inlet tank, a water inlet pump, a water inlet solenoid valve, a water outlet solenoid valve, a pressure gage, a heating unit and a control unit. The method disclosed by the invention comprises the following steps of: firstly, connecting the membrane module into the detection system; heating water in the water tank; opening the water inlet solenoid valve and closing the water outlet solenoid valve to ensure that impact pressure in the membrane module reaches specified pressure, and keeping the pressure in regulated time; then, opening the water outlet solenoid valve and closing the water inlet solenoid valve; rapidly discharging water and leaking pressure to zero; returning outlet water back to the water inlet tank; and circularly and alternatively carrying out pressure keeping operation and pressure leaking operation, wherein the cycle period is at least 100000 times. According to the detection system and method disclosed by the invention, a stressing condition of the membrane module under circulating impacting acting force in an application operation process can be simulated through alternative circulation of pressure keeping and pressure leaking periods of the impact pressure, and the sealing effect of a glue sealing end face of the membrane module is effectively evaluated, so that the service life of the membrane module is judged.

The invention discloses an automatic repairing device for wooden furniture in the field of furniture processing, comprising a workbench located below and a repairing box located above. The interior of the repairing box includes an upper transmission chamber and a lower ejection chamber, and the upper transmission chamber includes a vertical rotation The shaft, the surface of the rotating shaft is sleeved with a cylindrical cam, the cylindrical cam is in contact with the first rack during the rotation process, the first rack is meshed with a circular gear, one end of the circular gear is meshed with the first rack, and the other end of the circular gear is meshed with a The second rack, the bottom of the second rack is meshed with a disc cam, and the disc cam is in contact with the ejector group during the rotation stroke. In this technical solution, reciprocating contact compression is used, and the compression process is divided into compression ‑Re-pressing‑Retraction, the burrs generated by the repair are smoothed during the re-pressing process, and at the same time, they are rotated during the re-pressing process to scrape off the excess paint or glue surface.

The invention provides a torque motor based diamond cutting disc performance testing device and method, and relates to a testing device for detecting a diamond cutting disc performance. The testing device is provided with a support, an angle grinder, a diamond cutting disc, an angle grinder movement sliding block frame, a screw rod, a guide rail, a guide rail fixing frame, a torque motor, a coded disk, a diamond cutting disc outer diameter detector, a compute controller and a panel fixing frame; the angle grinder is fixedly connected with the angle grinder movement sliding block frame, the angle grinder is vertically arranged, the diamond cutting disc is vertically arranged on the angle grinder, the angle grinder movement sliding block frame is connected with one end of the screw rod and is in moving cooperation with the guide rail, the guide rail is horizontally arranged on the guide rail fixing frame, one end of an output shaft of the torque motor is connected with the other end of the screw rod, the other end of the output shaft of the torque motor is connected with the coded disk, the diamond cutting disc outer diameter detector is arranged at one end of the guide rail, and the angle grinder, the diamond cutting disc outer diameter detector, the torque motor and the coded disk are all electrically connected with the computer controller.

The present invention relates to a hinge bearing and testing equipment, comprising a first bracket mechanism; a rotating mechanism, which is rotationally connected with the bracket mechanism; a connecting shaft, which is drivingly connected with the rotating mechanism, and one end of the connecting shaft is It is fixedly connected with one end of the measured object; the rotation axis of the connecting shaft is perpendicular to the rotation axis of the rotating mechanism. When testing, the object under test bends downward, driving the connecting shaft to tilt downward to automatically adjust the angle, which can reduce the abnormal stress concentration at the connecting end of the object under test and the connecting shaft, and avoid affecting the test effect of the whole set of testing equipment.

The invention relates to a hydraulic system and alternating stress fatigue testing equipment, which includes a hydraulic oil tank for storing oil required by the hydraulic system; a first power system, whose input end communicates with the hydraulic oil tank, and the first power system includes a second An output branch and a second output branch, the first output branch communicates with the first oil cylinder mechanism of the deflection loading device, so that the first oil cylinder mechanism drives the measured object clamped by the deflection loading device to drop to the target position; the second The output branch communicates with the first motor mechanism of the deflection loading device, so that the first motor mechanism can lock the object to be measured after it is lowered to the target position; the second power system, its input end communicates with the hydraulic oil tank, and the second power system includes The third output branch, the fourth output branch, the fifth output branch and the sixth output branch; the circuit system, which is respectively connected with the first oil cylinder mechanism, the first motor mechanism, the fourth motor mechanism, the third motor mechanism, The return oil path of the second oil cylinder mechanism and the second motor mechanism is communicated.

The invention relates to a deflection loading device and testing equipment, including a supporting mechanism; a loading connection mechanism connected to the supporting mechanism for rotating and clamping the object to be measured, and the loading connection mechanism slides to the first position relative to the supporting mechanism. When in a first position, the object under test is bent to a target degree; a first driving mechanism, which is connected with the loading connection mechanism, is used to drive the loading connection mechanism to slide relative to the support mechanism. When the first driving mechanism drives the loading connection mechanism to slide to the first position relative to the support mechanism, the measured object is bent to the target degree, that is, a certain bending angle is formed, and the function of simulating the bottom-hole bending condition is realized.

The invention discloses a filtering device with automatic detection structure, which comprises a filter cylinder provided with an opening end, a filter cylinder cover that is matched with the liquid in a sealing way, and a filter core arranged in the filter cylinder, wherein the filter core, the filter cylinder cover and the filter cylinder are matched with each other to form a water inlet chamber and a filtering chamber; the filter cylinder cover is provided with a water inlet hole communicated with the water inlet chamber, and a water outlet hole communicated with the filtering chamber; thetop of the filter cylinder cover is provided with a first plunger piston cavity communicated with the water inlet chamber, and a second plunger piston cavity communicated with the filtering chamber; the first plunger piston cavity is sealed by liquid and is assembled with a first plunger piston capable of moving up and down, and the second plunger piston cavity is correspondingly assembled with asecond plunger piston; and the first plunger piston and the second plunger piston are touched and matched with a lever taking a rotating shaft as a supporting point, and can drive the lever to trigger a microswitch for converting a pressure signal into an alarm signal. The invention can be used for detecting the working state of the filter core in real time and accurately judging the blocking situation of the filter core, and has the characteristics of stable working performance, simple structure, sensitive action and the like.

The invention discloses a method for detecting critical failure of a battery. The detection method is as follows: Step 1: battery traceability. Before assembling the battery in a UPS, trace its manufacturer, production time, battery performance parameters and battery performance parameters through a battery two-dimensional code. The service life, store these data in the memory, step 2: install the detection memory, single-chip microcomputer and alarm, install the memory, single-chip microcomputer, alarm and wireless communication module in the UPS respectively, use it synchronously with the battery, and the single-chip microcomputer passes through The wireless communication module is connected with the CPU controller inside the UPS and the remote device. Step 3: Install current and voltage sensors and coulomb counters. The present invention monitors the battery surrounding temperature, dust concentration, charging and discharging current and voltage, battery capacity and charging time in real time, traces the source of the battery, understands its basic data, and infers the battery failure time according to the data and the detection data, and timely Repair and replace batteries.

A PEMFC bipolar plate life testing device and method, the device includes a bipolar plate, a flow field on the pole plate, a cover plate, a bottom plate, a microporous filter membrane, a flexible counter electrode, a heating film, a gas supply device, and a simulated PEMFC environmental cycle Liquid supply device; gas channels are provided at the fluid inlet and outlet positions of the pole plate; various fluid measuring instruments are installed on the gas supply device, and the liquid supply device includes a peristaltic pump and a flow meter. When in use, cover the test flow field of the bipolar plate with a microporous filter membrane and a flexible counter electrode, cover the back with a heating film, and fix it between the cover plate and the bottom plate; After reaching the corresponding potential, it will run for a long time, and the use of the bipolar plate can be judged by detecting the ion concentration in the circulating solution. The device solves the problem that the service life of the metal bipolar plate cannot be independently evaluated, and its testing method and evaluation means are simple and practical, and can accurately judge the service life of the bipolar plate, and is suitable for widespread promotion in the life test of the metal bipolar plate.