33results about How to "Reduce major accidents" patented technology

The invention discloses a high-pressure controllable slide-valve type mechanical combined sealing system. The system comprises a controllable slide valve stationary seal assembly and a rotating mechanical seal assembly; the controllable slide valve stationary seal assemble comprises a slide valve gland (13), a slide valve (11) and a tapered shaft sleeve (12) sheathed on a shaft shoulder, the tapered shaft sleeve (12) is positioned inside the slide valve gland (13), the slide valve (11) which is partially positioned in a flange (16) is hermetically connected with the tapered shaft sleeve (12) in a sliding way, and the flange (16) is provided with a pressure source channel I (161) and a pressure source channel II (162) which are respectively used for controlling the slide valve (11) to slide leftwards or slide rightwards; the rotating mechanical seal assembly comprises a rotating seat (9) which is fixedly connected with a shaft sleeve (10), a rotating ring (17) and a stationary ring (7) which are closely jointed on a seal face and the like. The sealing system can help greatly reduce and avoid leakage of dangerous fluid and serious accidents.

The invention discloses an industrial flow equipment chain detection method for a distributed type wireless sensing network. The method comprises the following steps: based on a property of industrialflow equipment that a parameter space is dispersed and a time sequence is continuous, carrying out frequency difference variation space-time correlation signal sensing and transmission by adopting the distributed type wireless sensing network, and carrying out wireless sensing information interaction corroborative fault situation estimation on an industrial flow equipment chain; developing local-central two-grade distributed type fault chain construction and expert database self-learning. According to the industrial flow equipment chain detection method disclosed by the invention, wireless sensing node sensing and node communication functions, and industrial parameter sensing, equipment fault estimation and the expert database self-learning are combined; when industrial equipment state detection is carried out, predication of equipment faults is also realized in advance, so that the practicability and reliability of carrying out industrial flow equipment detection by utilizing the wireless sensing network are enhanced.

The invention belongs to the field of carrying tool application engineering, and discloses a vehicle independent risk avoiding system and method for an operation passenger car driver under the abnormal condition. By performing real-time collection data monitoring on the rotating angle of the rotating angle speed of a vehicle steering wheel, and performing calculation analysis on the collected data, whether a driver loses normal control for a car or not is judged, a signal instruction is sent out, and the car is controlled to steer and brake; meanwhile, alarm prompting is performed, and alarm information is sent to a monitoring center. After the vehicle driver is invaded by passengers and emergency diseases/damage or loses normal control over the car due to operation errors, according to the real-time traffic condition, the car is controlled to perform reasonable steering, braking and parking motions; an alarm can be given to passengers and surrounding cars; an alarm can be given to related departments through a GPS monitoring system to start an emergency plan in time, and the probability that operation cars have great accidents can be greatly lowered.

The invention discloses EPP (Expanded Polypropylene) packaging plastic foams and a preparation method thereof. The EPP packaging plastic foams are prepared from the following components in parts by weight: 150-220 parts of high melt strength polypropylene, 8-17 parts of foamer, 2-4 parts of polycarbonate, 0.5-1.5 parts of metal salt, 2-4 parts of ammonium polyphosphate, 1-5 parts of solidifying agent, 3-4 parts of compatibilizer, 2-6 parts of polyvinylidene chloride, 9-16 parts of EVOH (Ethylene Vinyl Alcohol Copolymer) resin, 2-6 parts of polyvinylidene chloride, 1-2.5 parts of polyvinyl alcohol, 3-6 parts of foam stabilizer and 15-20 parts of glass fiber. The invention relates to the technical field of EPP materials. The preparation method of the EPP packaging plastic foams comprises thefollowing steps of raw material preparation, primary expansion, premix mixing, material compression, feeding and demoulding. By adding the glass fibers, the metal salt, the polyvinylidene chloride, the polyvinylidene chloride and the EVOH resin in the EPP raw material, the whole flame retardant property of the material is remarkably improved, and major accidents caused by ignition of the materialare effectively reduced; and a product is good in self-cleaning property, liable to clean, difficult in breeding bacteria and very attractive in surface and is very suitable for being used as a packaging material.

The invention discloses a method for detecting equipment failure. For the inherent advantage that the wireless sensor network nodes themselves are capable of information communication in a distributedwireless sensor network, the information between adjacent nodes is interacted, a set of distributed wireless sensors in a given area collect data, and the use of the neighbor equipment and the equipment is reasoned based on the data of perception nodes of neighbor nodes, thereby increasing the probability of detecting hidden failures, and greatly reducing the probability of major accidents. Whenthe wireless sensing nodes detect local abnormal data, the wireless abnormal data control center is used to trigger all the equipment self-checking commands. At the same time, in the normal detectionprocess of the wireless sensor network, even if not perceiving that the parameter abnormity control center randomly command and timely command all the sensing nodes to upload the data, the detection effectiveness and reliability of the wireless sensor network are improved.

The invention belongs to the technical field of intelligent robots, and discloses a vehicle autonomous risk-avoidance control device in the case of driver abnormality. An environment sensing system isused for collecting real-time information that a vehicle driver loses normal control over a vehicle due to sudden illness/injury, malicious passenger interference, or misoperation; a vehicle operation control system is used for forming a signal instruction after calculating and analyzing the information transmitted by the environment sensing system, and controlling the vehicle to make reasonablesteering, braking and parking actions according to real-time traffic conditions; a vehicle steering/braking/parking control system is used for making corresponding vehicle steering, braking and parking actions; and an contingency plan processing terminal remotely controls the vehicle operation control system. The probability of major accidents of commercial vehicles can be decreased greatly, and quite high practical significance is achieved.

The invention provides a task delay processing method which comprises the following steps: when a task request is received, judging whether a return result corresponding to the task request is generated within a preset time or not, and when the return result corresponding to the task request is not generated within the preset time, obtaining reserved resources; And switching the task to the reserved resource for execution, and generating a return result corresponding to the task request by using the reserved resource. The invention further provides a task delay processing device, a computer device and a computer readable storage medium. When the task delay exceeds the preset time in the task execution process, the task is continuously executed by switching to the standby resource, so thatthe task delay is reduced, the user experience is improved, and meanwhile, major accidents can be effectively reduced.

The invention relates to a vibration reduction type new energy battery with a leakage alarm function. The vibration reduction type new energy battery comprises a main body, and further comprises an alarm mechanism and a vibration reduction mechanism, wherein the alarm mechanism comprises a detection tube, a piston block, a fixed rod, a supporting sleeve, a transmission rod, a second spring, a first contact, a second contact and a time delay assembly; the vibration reduction mechanism comprises a mounting plate and at least two buffering assemblies, wherein each buffering assembly comprises a supporting rod, a lifting sleeve and two first springs; and the time delay assembly comprises an oil cylinder, an oil conveying pipe, a one-way valve, a piston plate and an oil conveying hole. According to the vibration reduction type new energy battery with the leakage alarm function, the leakage state of a fuel cell can be detected through the alarm mechanism, and then an alarm signal is sent toan operator, so that the operator can carry out treatment in time, and the probability of major accidents is lowered; and by means of the vibration reduction mechanism, the impact force borne by the fuel cell in the running process of a vehicle is reduced, and the probability that the fuel cell is damaged is lowered.

The invention discloses a device used for a long-distance large-pipe-diameter pipeline water delivery pipeline tail end and having a function of removing a water hammer in a pipeline. The device comprises a pond, a pipeline water outlet front end, a pipeline water outlet tail end, a first service valve, a flow adjusting valve, a bypass pipe, a second service valve and a pressure fluctuation pre-check valve. The pipeline water outlet front end is connected with the pond, the first service valve and the flow adjusting valve are sequentially arranged on the pipeline water outlet tail end, the bypass pipe and the pipeline water outlet tail end are arranged in parallel, and the second service valve and the pressure fluctuation pre-check valve are sequentially arranged in the liquid flowing direction on the bypass pipe. Safe, stable and efficient running of water delivery system equipment can be ensured, the major accident of the water delivery and transfer pipeline system can be effectivelyreduced, the phenomenon of water source losing or damage to the surrounding ecological environment due to pipe blasting can be avoided, the water hammer generated by non-normal closing of a brake andother valves in the pipeline can be removed, manual intervention is reduced, and the automation degree is improved.

The invention discloses a lightning arrester residual voltage characteristic monitoring method based on wavelet transform. The method comprises the following steps: step 1, respectively acquiring current and voltage parameters of a zinc oxide lightning arrester during lightning overvoltage impact; step 2, processing the current and voltage parameters, performing data denoising and calculation by using wavelet transform, decomposing the acquired current and voltage parameters interfered by various factors on site in a time domain and a frequency domain by using wavelet transform, and separatingeffective signals from original signals containing noise, thus obtaining a residual voltage characteristic curve when the zinc oxide arrester is impacted by electric overvoltage; and 3, analyzing theobtained residual voltage characteristic curve, finding out the internal relation between the residual voltage characteristic change and the working condition of the zinc oxide lightning arrester, and determining the working condition of the zinc oxide lightning arrester. According to the method, the residual voltage characteristics of the zinc oxide arrester during lightning overvoltage can be rapidly and accurately monitored, and major accidents are reduced.