17 results about "Catastrophic failure" patented technology

The invention relates to the technical field of industrial process online monitoring, and discloses a digital twinning online quality control monitoring system for a stainless steel fastener production line, which comprises a data acquisition module for acquiring a high-dimensional process data vector, a feature projection module for generating a feature coordinate and a projection residual error based on a preset feature base vector, and a data processing module for processing the feature coordinate and the projection residual error; the state judgment module judges the catastrophic failure state or the quality drift state according to the residual priority, and the safety area self-adaption module updates the golden area center on the slow time scale based on qualified product coordinate statistics. The system can check the form of high-dimensional data in real time with low calculation cost, distinguish different failure modes, adaptively adjust the monitoring reference through slow time scale statistics, and avoid inherent contradictions among monitoring depth, real-time performance and long-term stability.

A heating, ventilation, air conditioning, and refrigeration (HVACR) system that is chargeable with a refrigerant in a closed refrigeration cycle includes an HVACR enclosure, a vent having a vent outlet fluidly coupled with the HVACR enclosure for discharging air from the HVACR enclosure, and a refrigerant retention device. The refrigerant retention device is positioned to contact air and escaped refrigerant that has been emitted from the closed refrigeration cycle prior to discharge of the air from the vent outlet, wherein the refrigerant retention device comprises a porous refrigerant retention material which passes air to the vent outlet and retains the escaped refrigerant. A sensor can be provided to detect the presence of refrigerant and a gas pump can be operated to pass the refrigerant through the refrigerant retention device. A method of operating an HVACR system is also disclosed.

A hydrophone may be deployed in a wellbore to collect sounds that may be used to identify whether a wellbore is safe to operate. This hydrophone may include acoustic sensors that sense noise generated by motion of the hydrophone and may sense noise indicative of a defect that could lead to catastrophic failure of a wellbore. Noise generated by movement of the hydrophone may be classified as "road noise" and noise associated with wellbore defects may be classified being "signals of interest." The presence of "road noise" may interfere with the collection of "signals of interest" and because of this, evaluations performed on data that includes "road noise" may result in inaccurate determinations and a decrease in safety. As such, systems and methods of the present disclosure are directed to improving safety of a wellbore by removing "road noise" more effectively while increasing quality of "signals of interest."

This invention provides a safety assurance method and system for unmanned aerial vehicles (UAVs) used for medical examinations of high-rise buildings in cities. The method includes: continuously monitoring the flight parameters of the UAV, sampling the flight parameter data at a frequency of ≥100Hz, and performing fusion processing using a Kalman filter algorithm; employing a fault diagnosis algorithm, based on a dual judgment mechanism of threshold and trend analysis, to analyze the collected flight parameter data in real time; comparing power redundancy and attitude stability indicators with preset thresholds to determine the fault level, and performing graded emergency handling according to the fault level, triggering corresponding handling and response strategies for non-catastrophic or catastrophic faults; after the UAV lands, confirming the safety of the landing point through visual SLAM or GPS positioning, and initiating onboard communication to report the status. This invention provides a complete solution from fault prevention to collision buffering through redundant design, graded emergency response, and dual-level protection, maximizing the protection effect and facilitating industrial implementation and verification.

This invention provides a shielded motor pump, comprising a pump casing and a drive unit. The drive unit includes a rotor and a stator located within the motor casing. The rotor is mounted on a rotor shaft, one end of which is inserted into the pump casing and connected to an impeller. The rotor shaft is composed of a hollow tube and plugs pressed into both ends of the hollow tube. Each plug has a through hole, which, together with the inner cavity of the hollow tube, forms a fluid channel. The cavity within the motor casing where the stator is mounted is called the stator cavity, which is filled with a composite thermally conductive material. This invention constructs a pilot-operated mechanical protection mechanism. When bearing wear leads to increased radial displacement of the rotor, the limiting component can contact the rotor and stator shielding sleeves beforehand, thereby providing an early warning to the system and physically limiting further displacement. This fundamentally prevents catastrophic failures such as shielding sleeve tearing and media leakage.

The invention provides a dynamic risk analyzer (DRA) that periodically assesses real-time or historic process data, or both, associated with a plant operation, such as a manufacturing, production or processing facility, and identifies hidden near-misses of such operation, when in real time the process data appears otherwise normal. DRA assesses process data to enable operating personnel including management at a facility, to have a comprehensive understanding of risk status and changes in alarm and non-alarm variables. Hidden process near-miss data may be analyzed alone or in combination with other process data and / or data resulting from prior near-miss situations, to identify strategic action to be taken to reduce the severity of, or avert, adverse incidents or catastrophic failure of a facility operation. The invention also provides autonomous learning and monitoring of historical inter variable relationships to distinguish normal multivariate behavior from anomalous departures indicative of undesirable process issues or sensor asynchronicity.

The present invention relates to a façade-cleaning robot with an integrated, safety- focused obstacle-crossing system. The system utilizes at least six wheels and two non-contact suction cups with flexible skirts to navigate small obstacles and gaps on vertical or near-vertical surfaces. A cam-based mechanism, driven by one or two actuators, precisely controls the sequential lifting and lowering of the wheels, ensuring at least four wheels maintain surface contact for stability. The flexible skirts on the suction cups minimize suction loss as they deform around obstacles. This enables the robot to continue its cleaning operation without interruption while crossing obstacles. The system is lightweight, energy-efficient, and designed to minimize moment loads by maintaining a level chassis. Furthermore, the components serve dual functions, providing inherent redundancy and resistance to catastrophic failure, thereby enhancing the robot's reliability and operational safety.

The disclosure of this method is intended for the predictive maintenance market, presenting an innovative method for detecting faults in hydraulic couplings, crucial components in power transmission systems across various industrial sectors. Slippage in hydraulic couplings, which is a loss of efficiency in torque transmission, can indicate wear, insufficient / excessive lubricant, or other problems, resulting in unplanned downtime and maintenance costs. The method uses metrics extracted from vibration signals to identify slippage, such as SFI (Slipping Frequency Indicator) and SNR (Signal-to-Noise Ratio). The combination of these metrics and other signal processing allows for accurate and reliable slippage detection, preventing catastrophic failures in industrial systems.

The application discloses a kind of NPC three-phase four-wire rectifier inner power tube open-circuit fault detection methods, it is related to the technical field of early warning, the method can realize on-line fault early warning, guide fault-tolerant technology and operation and maintenance strategy, prevent catastrophic failure occurs.The method comprises the following steps: determining the positive sampling mean and the negative sampling mean of each phase current, and determining whether the inner power tube fails; if it is detected that the inner power tube fails, then locate the fault phase according to the positive sampling mean and the negative sampling mean of each phase current; compare the positive sampling mean and the negative sampling mean of the fault phase to locate the fault inner power tube.The application is suitable for detecting the open-circuit fault of the inner power tube in the symmetric power NPC three-phase four-wire rectifier, and has the advantages of low calculation cost, good robustness and fast diagnosis speed.

An array of hydrophones may be deployed in a wellbore to collect sounds that may be used to identify whether a wellbore is safe to operate. This hydrophone array may include acoustic sensors that sense noises indicative of a defect that could lead to catastrophic failure of a wellbore and other noises that may be considered unwanted background noises. Techniques of the present disclosure may classify noises indicative of a defect as being “signals of interest.” The presence of “background noise” may interfere with the collection and / or evaluation of “signals of interest.” Because of this, evaluations performed on data that includes “background noise” and “signals of interest” may result in inaccurate determinations being made regarding the safety of a wellbore. As such, systems and methods of the present disclosure are directed to improving safety of a wellbore by removing “background noise” more effectively while increasing quality of “signals of interest.”

The invention represents a method of increasing the service life of structures with an initiated crack through the controlled treatment of the root of the crack leading to the generation of compressive stresses in its vicinity preventing its further growth. The danger of initial quasi-stable crack growth lies in the fact that tensile stresses acting at their roots promote propagation without normally recognizable manifestations. However, the gradual growth of such a crack will eventually result in a brittle fracture, which will cause an uncontrollable catastrophic failure of the structure. For the effective application of the invention, the existence of a method of identifying the presence of a crack in the structure and knowing the shape of the exact spatial localization of the crack are necessary conditions. To identify the presence of a crack in the structure (1), as well as to determine the spatial topography of the crack, there are several applicable technical solutions, the choice of which is at the discretion of the operator of the structure. The most important prerequisite for the safe use of a critical structure is a system for identifying the initiation, presence and propagation of a crack. Immediately after recognizing the presence of a crack (2) in the structure, it is necessary to identify its location. After identifying the spatial location and arrangement of the crack, it is possible, based on the invention, to generate a temperature increase located in the immediate vicinity of the crack root (3) through a system of multiple beams of pulsed penetrating coherent radiation (4). A narrowly localized significant increase in temperature in the immediate vicinity of the crack root leads to the attempt of the heated volumes to expand, which is prevented by the surrounding cold material. These opposing events create stresses that ultimately cause the stress at the crack root to transform from tensile (3) to compressive (6), resulting in the arrest of crack growth. By applying the invention, it is possible to significantly increase the service life of constructions in which hitherto known methods cannot be implemented in an efficient manner.

The invention belongs to the technical field of deep underground engineering and rock mechanics tests, and discloses a surrounding rock catastrophe failure characteristic evaluation test system and method considering in-situ conditions, and the system comprises a loading unit, a test piece and a monitoring unit; the test piece is in a vertically placed rectangular plate shape, any two opposite vertical side walls of the test piece are provided with holes, the axes of the holes are horizontally placed, and the two holes are symmetrically placed relative to a vertical plane; the test piece is placed in the loading unit, and the loading unit applies a vertical load to the upper end face and / or the lower end face of the test piece and limits horizontal movement and deformation of the upper end and the lower end of the test piece in the direction perpendicular to the axis of the hole; the problem that in the prior art, a real grotto geometric configuration and the subsequent load effect applied to the damaged surrounding rock by surrounding rock mass cannot be simulated at the same time in the test process is effectively solved, and the consistency and reliability of the surrounding rock catastrophe damage characteristic evaluation result and the in-situ engineering practice are remarkably improved.

The present application relates to a kind of silicon carbide matrix composite damage monitoring methods based on resistance change, belong to composite damage monitoring technical field, the probability model of fiber failure in the resistance model composite is coupled to obtain composite damage monitoring model, the damage state of composite is monitored and evaluated in real time based on the composite damage monitoring model, ensure the service safety and reliability of composite, effectively predict the remaining useful life of composite, prevent the occurrence of catastrophic failure.

The invention provides a dynamic risk analyzer (DRA) that periodically assesses real-time or historic process data, or both, associated with an operations site, such as a manufacturing, production, or processing facility, including a plant's operations, and identifies hidden near-misses of such operation, when in real time the process data appears otherwise normal. DRA assesses the process data in a manner that enables operating personnel including management at a facility to have a comprehensive understanding of the risk status and changes in both alarm and non-alarm based process variables. The hidden process near-miss data may be analyzed alone or in combination with other process data and / or data resulting from prior near-miss situations to permit strategic action to be taken to reduce or avert the occurrence of adverse incidents or catastrophic failure of a facility operation.

A hydrophone may be deployed in a wellbore to collect sounds that may be used to identify whether a wellbore is safe to operate. This hydrophone may include acoustic sensors that sense noise generated by motion of the hydrophone and may sense noise indicative of a defect that could lead to catastrophic failure of a wellbore. Noise generated by movement of the hydrophone may be classified as “road noise” and noise associated with wellbore defects may be classified being “signals of interest.” The presence of “road noise” may interfere with the collection of “signals of interest” and because of this, evaluations performed on data that includes “road noise” may result in inaccurate determinations and a decrease in safety. As such, systems and methods of the present disclosure are directed to improving safety of a wellbore by removing “road noise” more effectively while increasing quality of “signals of interest.”

An array of hydrophones may be deployed in a wellbore to collect sounds that may be used to identify whether a wellbore is safe to operate. This hydrophone array may include acoustic sensors that sense noises indicative of a defect that could lead to catastrophic failure of a wellbore and other noises that may be considered unwanted background noises. Techniques of the present disclosure may classify noises indicative of a defect as being "signals of interest." The presence of "background noise" may interfere with the collection and / or evaluation of "signals of interest." Because of this, evaluations performed on data that includes "background noise" and "signals of interest" may result in inaccurate determinations being made regarding the safety of a wellbore. As such, systems and methods of the present disclosure are directed to improving safety of a wellbore by removing "background noise" more effectively while increasing quality of "signals of interest."

The invention provides a shielding motor pump which comprises a pump shell and a driving part, the driving part comprises a rotor and a stator which are located in a motor shell, the rotor is installed on a rotor shaft, and one end of the rotor shaft is inserted into the pump shell to be connected with an impeller; the rotor shaft is formed by combining a hollow pipe and blocking pieces pressed into the two ends of the hollow pipe, through holes are formed in the blocking pieces, and the through holes and an inner cavity of the hollow pipe jointly form a fluid channel; a cavity for installing the stator in the motor shell is a stator cavity, and the stator cavity is filled with a composite heat conduction material. A pilot-operated type mechanical protection mechanism is constructed, when the radial displacement of the rotor is increased due to abrasion of the bearing, the limiting assembly can make contact with the stator and rotor shielding sleeves in advance, and therefore early warning is provided for the system, further displacement is physically limited, and disastrous faults such as shielding sleeve tearing and medium leakage are fundamentally prevented.