277results about How to "Improve intrinsic safety" patented technology

A method of scavenging power in a circuit having a power source generating electric current includes connecting a power scavenging device having an input terminal pair and an output terminal pair to the circuit via the input terminal pair, dynamically regulating a voltage drop across the input terminal pair of the power scavenging device, harvesting electrical energy available at the regulated voltage drop from the electric current flowing through the first input terminal pair of the power scavenging device, and providing the harvested electrical energy at the output terminal pair of the power scavenging device.

A bidirectional DC to DC converter having a first operational mode and a second operational mode includes a first terminal pair that has a positive terminal and a negative terminal and that connects the converter to a first electric circuit, a second terminal pair that has a positive terminal and a negative terminal and that connects the converter to a second electric circuit, an accumulation element for temporary accumulation of electric energy; and a switching circuit connected to the first terminal pair, the second terminal pair, and the accumulation element. Electric energy is transferred from the first electric circuit to the second electric circuit via the accumulation element in the first operational mode of the bidirectional DC to DC converter and, from the second electric circuit to the first electric circuit via the accumulation element in the second operational mode of the DC to DC converter.

The present invention provides for a process of separating hydrocarbons such as short chain paraffins and olefins from non-hydrocarbon gases using short-cycle time concentration swing adsorption processes. The hydrocarbons are adsorbed from the gaseous stream on highly siliceous nanoporous materials, e.g., such as of aluminum-deficient faujasite-type zeolites, by way of a pressure, vacuum or temperature swing adsorption, then desorbed from the adsorbent in the presence of steam. Optionally, the steam is desorbed from the adsorbent through the use of air or inert gas or a recycle of the waste gas effluent. The invention also provides for a new method of preparing novel shapes such as beads and monolithic structures of the highly sileceous nanoporous materials.

The invention belongs to the reactor design technology, and particularly relates to an active and passive combined heat removal device for containment. The active and passive combined heat removal device structurally comprises a containment spraying system and a passive containment heat leading-out system; one end of a pipeline of the containment spraying system is connected with a refueling water tank, and the other end of the pipeline of the containment spraying system is connected to a spraying header on the top of the containment by a spraying pump and a heat exchanger; and the passive containment heat leading-out system comprises a heat exchanger or heat exchanger set, the heat exchanger or heat exchanger set is arranged in the containment and is connected with a heat exchange water tank by a riser pipeline or a downcomer pipeline, and the heat exchange water tank is arranged on the outer portion of the containment, and is higher than the heat exchanger or heat exchanger set. The active and passive combined heat removal device has the advantages that dependence of the traditional nuclear power plant with an active safety system on a safety power source is changed, and intrinsic safety of a heat removal system of the containment of a nuclear power plant is improved.

The invention relates to the technical field of petroleum drilling safety, in particular to a safe monitoring and protection device for drilling and an intelligent protection system of the safe monitoring and protection device. The safe monitoring and protection device for drilling comprises a data acquisition unit, a control processing unit and a safe protection execution unit; the control processing unit comprises an PLC (programmable logic controller) and an industrial personal computer, the PLC is connected with the industrial personal computer through a serial port; various kinds of sensors of the data acquisition unit acquire on-site operation data and transmit the data to the PLC and the industrial personal computer in real time; the safe protection execution unit comprises a pumping pressure protection mechanism and a runner wagon protection mechanism; a pressure sensor mounted on a vertical pipe or a slurry pump, a winch sensor mounted on a winch barrel and a weight transducer mounted on a deadline anchor output signals to be connected with the PLC; the PLC is in control connection with the pumping pressure protection mechanism and the runner wagon protection mechanism. According to the safe monitoring and intelligent protection device for drilling, the safe protection execution unit comprises a pumping pressure protection sub-system which mainly adopts an active response type safe protection method, and when pumping pressure reaches a set protection value, the pump stops firstly and then pressure relief is performed.

The invention relates to an automatic electric detonator packaging machine which relates to an automatic packaging machine capable of automatically taking electric detonators out, reshaping the electric detonators and packing the electric detonators with a thermal sealing mode in the electric detonator production process. The automatic electric detonator packaging machine aims to solve the problems that in the prior art, the full-manual operation is low in efficiency and the safety can not be ensured. The technical scheme of the automatic electric detonator packaging machine is as follows: the operation of the automatic electric detonator packaging machine is entirely controlled by a PLC (programmable logic controller) control system, and comprises a mould conveying device, a pipe bagging device, a device for cutting two sealed ends, a side sealing device, a upper film feeding device and a lower film feeding device, wherein the mould conveying device, the pipe bagging device, the device for cutting two sealed ends and the side sealing device are positioned on a workbench according to the order of stations, the upper film feeding device is positioned above the workbench, and the lower film feeding device is positioned under the workbench. The automatic electric detonator packaging machine can prevent operators from directly contacting the dangerous electric detonators, enhances the internal safety, meets the automatic and isolate production requirements on the functions of the stations, and enhances the production efficiency. The automatic electric detonator packaging machine is mainly applied to the automatic packaging of the electric detonator and other objects of the similar structures.

The invention relates to the technical field of explosives, in particular to a process for charging and packing an industrial powder explosive cartridge and a vibratory charging machine. The process for charging and packing the industrial powder explosive cartridge is characterized by comprising a cartridge finishing and fixed connecting process, a cartridge charging process and a cartridge sealing process. The vibratory charging machine is characterized by comprising a stander; the stander is provided with a frame conveying mechanism, a charging station and a sealing station; the charging station is provided with a charging ramming mechanism and a compaction mechanism; and the sealing station is provided with a sealing mechanism. The process has the advantages of short flow, high safety performance, high working efficiency, good charging quality, and the like; and the vibratory charging machine has the advantages of high essential safety level, high product quality qualification rate, high automation degree, large capacity, compact and reasonable structure, little occupied area, few operation personnel at a dangerous area, and the like.

The invention provides a gas mixing and compounding method and a gas mixing and compounding system. The system comprises a gas inlet device, a gas mixing device and a gas regulating box. The gas mixing device comprises a gas mixing tank and a vacuum pump. The gas mixing tank is connected to one end, away from a gas supply bottle, of a gas conveying pipeline. The inlet of the vacuum pump is respectively connected to the gas mixing tank and the gas regulating box. The outlet of the gas mixing tank is connected to the inlet of the gas regulating box. The gas mixing tank is provided with a pressure controller, and the pressure controller is used for detecting gas pressure in the gas mixing tank. The method is capable of, according to a Dalton's law of partial pressure, changing a more difficultly measured volume variable into a more easily measured pressure variable, and according to a partial pressure of each gas in the gas mixing tank, determining a volume ratio of each gas component inan obtained mixed gas, thereby overcoming an error, of a traditional flowmeter or a double-linkage proportion regulating value, caused by the effects of gas density, a turbulence degree and the like,and improving stability of the whole gas mixing system.

The invention provides a temperature and humidity adjusting device for a chemical fire explosion safety test chamber system. The device provided by the invention comprises a temperature adjusting device and a humidity adjusting device. According to the chemical fire explosion safety test chamber system with the temperature and humidity adjusting device, harms of a runaway reaction, combustion explosion, decomposable explosion and the like which are generated during the process of large-scale chemical risk assessment test are eliminated, and simultaneously, effluents, exhaust gas and waste residues that are generated during collection test process undergo centralized processing. Inherent safety of the fire explosion risk test process is raised, and the effect of reducing environmental pollution is also achieved.

The invention provides an alkyl ester method produced glyphosate solvent recovery method. A diluted methanol solution collection tank is connected with the upper part of a primary rectifying tower through a pipeline, and the primary rectifying tower is connected with a return tank I through a condenser I; the return tank I is connected with a methyl alcohol methylal solution intermediate tank; themethyl alcohol methylal solution intermediate tank is connected with a secondary rectifying tank, a return tank II is connected to a methyl alcohol methylal finished product tank, and the secondary rectifying tank is connected to a methyl alcohol finished product tank. The recovery process comprises the following steps: enabling diluted methanol inside the diluted methanol solution collection tank to enter into the primary rectifying tower, enabling gas inside the primary rectifying tower to condense through the condenser to return back to the return tank, and feeding to the methyl alcohol methylal solution intermediate tank; feeding to the methyl alcohol finished product tank from a secondary rectifying tower extraction pump, condensing liquid at the bottom of the tower through the condenser and then feeding to the methyl alcohol finished product tank. According to the equipment and process provided by the invention, the defect that a traditional liquid-phase recovery process highlydepends on a graphite condenser and the problem that a traditional gas-phase recovery process is unstable in operation are solved, the process has the characteristics of energy saving and economical efficiency, and the steam consumption of glyphosate is 1.2t.

The invention relates to a low-melting-point thermoplastic solid propellant and a preparation method thereof, and belongs to the technical field of composite solid propellants. The propellant is prepared from the following components by mass percent: 55%-70% of oxidant, 10%-20% of thermoplastic elastomer binder, 10%-20% of plasticizer, 5%-20% of metal fuels and 3%-8% of auxiliaries. The prepared low-melting-point thermoplastic solid propellant has the advantages that melting mixing and forming of the thermoplastic propellant at a relatively low temperature lower than 95 DEG C can be realized,process safety of thermoplastic propellant preparation is greatly improved, a curing and cross-linking process in comparison with a thermoplastic propellant is cut out, process flow is shortened, production efficiency is improved, production cost is reduced and repeated processing of waste products can be realized.

The invention discloses a gel-type emulsion explosive and a method for preparing the same. The explosive is prepared by 75%-86% of ammonium nitrate, 4%-7% of emulsifier-compound grease, 0.5%-4% of crystal modifier and water balance, different models of coal permissible products are prepared by adding 3%-7% of flame reducer into the explosive. When preparation, the ammonium nitrate, crystal modifier, water and flame reducer are mixed, heated and dissolved to form an oxidant water solution as an aqueous phase solution, the emulsifier-compound grease is heated to form a combustible agent solution as an oil phase solution, the aqueous phase solution and oil phase solution are pumped into an open type emulsifier for emulsification after accurate measurement and are sensitized to finished products in a low speed mixing device by means of a belt device. The explosive energy of the product can be released to a maximum extent, the density can reach 1.4g/cm<3>, the explosion strength can reach 360ml and the detonation velocity can reach 6500m/s.

The invention relates to a method and a device for automatically detecting powder material accumulation density, relating to a device for detecting powder (granular) material accumulation density. The method comprises the following steps of: (1) connecting a material dividing hopper with an original spiral conveyer pipe; (2) opening a material dividing valve at the lower part of the material dividing hopper so that materials fall to a material weighing hopper supported by a weighing sensor; (3) scraping stacks at the top of the material weighing hopper through a material pushing scraping plate driven by a material pushing cylinder; (4) transmitting weight information of the material weighing hopper to a PLC (programmable logic controller) control system for calculating, comparing and displaying by the weighing sensor; (5) opening a material discharging valve at the lower part of the material weighing hopper so that the materials fall to a material receiving hopper and enter to a secondary spiral conveyer; and (6) pushing the materials falling from the material receiving hopper to be combined with the materials falling from an original spiral conveyer material discharging tube and sending to next procedure together by the secondary spiral conveyer. The device disclosed by the invention has the advantages of automatic identifying function, high accuracy, fast speed and high efficiency; and the device is capable of realizing full check, and effectively controlling the product quality.

The invention relates to a continuous production method and device for preparing propionic acid through air oxidation of propionaldehyde. The method comprises the steps that propionaldehyde enters a reactor through a liquid phase inlet in the bottom of a first-order oxidation reactor and makes contact with and is mixed with some compressed air, a majority of propionaldehyde in the raw material is converted into propionic acid through an oxidation reactor, a first-order oxidation product containing a small amount of propionaldehyde continuously enters a second-order or multi-order oxidation reactor and is continuously subjected to the oxidation reaction with the compressed air, and finally the propionic acid with the high-purity is generated. The device comprises two or more oxidation reactors connected in series, a condenser is arranged on the top of each oxidation reactor, and gas phase pipelines and backflow pipelines are arranged between the oxidation reactors for connection. A tail gas processing device is arranged behind each oxidation reactor. A gas phase pipeline is arranged between each condenser and the corresponding tail gas processing device for connection. The reaction conditions are mild, the product yield is high, the product quality is good, the propionaldehyde conversion rate is larger than 98.5%, the selectivity of the propionic acid is larger than 97.5%, and the product purity is larger than 99.5%.

The invention provides a machine for automatically assembling a detonator into a die, and relates to equipment for automatically assembling a detonator into a die, which aims to solve the problems of low manual operating efficiency and failure in security guarantee in the prior art. The machine can reliably realize operation of automatically assembling the packaged semi-finished detonator into the production die in an automatic production line of the detonator. In order to achieve the purpose, the technical scheme adopted in the invention is as follows: the machine comprises a case delivery cylinder and a detonator-fetching rotating device, wherein, the case delivery cylinder is used for pushing the detonator to be assembled to a rear-end station, the detonator-fetching rotating device is used for receiving the detonator to be delivered from the case delivery cylinder, overturning and then conveying the detonator to be assembled to the rear-end station, and the rear end of the detonator-fetching rotating device is connected with the device for assembling the detonator to be assembled into the designated die. The machine of the invention is mainly applied to automatically assemble the detonator in the civil explosion field.

The invention belongs to field of integrated modular pressurized water reactor technology, and concretely relates to an integrated modular pressurized water reactor with a 69 reactor core. A voltage-stablizer, multiple modular steam generators, multiple wet winding main pumps, and multiple groups of control rod drive mechanisms are totally and internally arranged in a reactor pressure vessel in order to integrate into an integrated pressurized water reactor module; The voltage-stablizer is also used as a top cover of the reactor pressure vessel, an inverted cap shaped double-layer stainless steel thermal insulation board with a composite structure and air interlayers is internally arranged in the voltage-stablizer, electric heating elements are circumferentially and uniformly and horizontally arranged in the voltage-stablizer, and the electric heating elements are arranged on the thermal insulation board; multiple groups of built-in control rod drive mechanisms are arranged below the thermal insulation board and above the reactor core by using a modular double layer assembling arrangement. The product better solves contradiction of safety and economical efficiency of small reactors with good engineering realizability.

The invention discloses a water-cooling wall, which relates to the technical field of nuclear safety. The water-cooling wall comprises a barrel-shaped side wall and a water-cooling tube arranged on the barrel-shaped side wall, wherein the upper end of the barrel-shaped side wall is communicated with an outlet header; the lower end of the water-cooling tube is communicated with an inlet header; the outlet header and an outlet main tube are communicated; and the inlet header and an inlet main tube are communicated. based on a non-dynamic safe concept, the water-cooling wall performs heat exchange only in natural circulation modes, such as thermal radiation, heat conduction, heat convection and the like, and the effect of an active part, such as a water pump and the like, is not required. A simplified system, less equipment and the mature technology are adopted so as to reduce influence of uncertain factors on system safety as much as possible and increase the inherent safety of a high temperature gas cooled reactor.

An improved intrinsic safety barrier arrangement for an electrical device or component. A method of intrinsic safety barrier operation for an electrical device or component is also disclosed.

The invention provides a method and a system for judging violation behaviors of an electric power operation site. The method comprises the following steps: acquiring a site video image through a video terminal, and analyzing the dressing and action states of field personnel in the image in real time; personnel positioning data are obtained through intelligent terminals carried by field personnel, and sensor detection values are obtained in real time through intelligent terminals distributed on a working site; a violation judgment rule analysis module performs comprehensive analysis according to a video analysis result in combination with personnel positioning data and sensor detection values transmitted by various intelligent terminals, and judges whether field personnel have violation behaviors and whether a working environment has risks in real time, if yes, a video terminal is linked to perform field snapshot and evidence obtaining, and if not, the video terminal is linked to perform field evidence obtaining. And the alarm description of the corresponding violation behavior or the operation environment risk is sent to the alarm module to give an alarm. According to the invention, the violation behaviors of the personnel are comprehensively judged based on the linkage cooperation of multiple types of intelligent terminal equipment, so that the safety supervision of operators is improved, and blind areas are eliminated.

The invention discloses a device for automatically detecting electric detonators and rejecting waste electric detonators, relating to a device for waste treatment. The invention aims to provide a device for automatically detecting whether electric detonator products are qualified or not and automatically rejecting the unqualified products. The device greatly improves the production efficiency, realizes man-machine isolation operation and has favorable safety. For achieving the aims, the invention adopts the technical scheme: the device for automatically detecting electric detonators and rejecting waste electric detonators is entirely installed on a bracket, the top of the bracket is a detecting table board, one side of the detecting table board is supported by a supporting frame and provided with a detection control device below which a detecting column is arranged, and a lead detecting part is just arranged below the detecting column when a detecting mould for fixing the lead detecting part in a limit fire tube mould is arranged on the detecting table board. The invention can be used for detecting electric detonators and products with similar structures and rejecting waste products.

The invention discloses a venturi circulation loop reactor for continuous production of ethephon.The reactor comprises a reactor body, a venturi mixer located at the upper end of the reactor body and a circulating heat exchanger.The venturi mixer comprises a venturi nozzle, a mixing chamber and a diffusion chamber which are sequentially connected from top to bottom.An induction chamber is arranged on the outer side of the venturi nozzle which extends out of the top of the reactor body.One end of the circulating heat exchanger is connected with the bottom end of the reactor body, and the other end of the circulating heat exchanger is connected with the venturi nozzle.The outer side of the induction chamber is connected with an air inlet.The outer side of the nozzle is connected with a raw material port.Compared with the prior art, energy consumption and equipment investment expenses can be greatly reduced, the occupied area can be reduced, and investment of capital construction is saved.The technical route is simple, equipment is compact, product quality is good, energy is saved, consumption is reduced, and the requirement for sustainable development is met.