40results about How to "Eliminate explosion" patented technology

A system and method for visualizing data in two-dimensional time-space diagrams including generating multi-dimensional program trace files, converting and merging them into interval trace files, and generating multiple time-space diagrams (multiple Gantt charts) to visualize the resulting multi-dimensional interval trace files. The needed events and trace information required to form multi-dimensional event traces are described in event trace files typically gathered from running programs, such as parallel programs for technical computing and Web server processes. The method includes converting event traces into interval traces. In one selectable design, the two-dimensional time-space diagrams includes three discriminator types (thread, processor, and activity) and six discriminator-legend combinations, capable of producing seven possible views. The six discriminator-legend combinations are thread-activity, thread-processor, processor-thread, processor-activity, activity-thread, and activity-processor. Each discriminator-legend combination corresponds to one time-space diagram, except that the thread-activity combination has two possible views: Thread-Activity View and Connected Thread-Activity View.

Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.

The invention provides a U+I type ventilation system for a work surface of top coal caving, which is an improvement of the arrangement of the U type, the U+L type and the E type or B type laneways and the ventilation systems in the prior art. An air intake way and an air return way of the work surface of top coal caving are arranged along a bottom board of a coal bed, and a regulation air door is arranged on the part of the air return way close to a big air return lane to control the reasonable ventilating parameter of the U+I type ventilating system. The invention is mainly characterized in that air exhausting lanes of top boards are arranged in parallel along the air return way with the parallel outward-staggered distance of 0 m to 5 m from the air return way to form the U+I type ventilating system of a one-intake and two-return mode. The invention fundamentally solves the problem of the accumulation of gas and coal dust on the upper section, the upper spatial angle and the gob area of the work surface of top coal caving, in particular the problem of the accumulation of the gas and the coal dust of the upper space of the upper gob area, provides a safe and high-effect ventilating system, and creates an excellent mechanical environment for realizing the exploitation of the top coal caving of small coal pillars and increasing the recovery rate of coal.

The invention discloses a configuration optimization system and method for a Sybase ASE database, pertaining to the field of database configuration. The method comprises following steps: expressing expert knowledge configured by the Sybase ASE database through a configuration library, a rule base, a case library for benchmark tests; starting, stopping and dynamically adjusting parameters by configuring a loading and executing module to directly drive the Sybase ASE database; utilizing the case library for benchmark tests to test performance of the case library under specific workload; obtaining a group of configuration parameter combination in accord with the user requirement by continuously adjusting input of the configuration library and the rule base for performance analyses; and eliminating the explosion of number for parameter combinations caused by simple permutation and combination by generating combinations of configuration parameters via guidance of rules in order to greatly decrease workload for configuration of the Sybase ASE database, reduce configuration difficulty and provide guiding effect of optimizing performance of the ASE database.

The invention discloses a method for producing super active carbon. The method comprises the following steps of: mixing a carbon raw material and KOH and continuously introducing an inert gas into a reaction system; raising the temperature of the reaction system to 400 to 500 DEG C, adjusting reaction pressure to be 2 to 8 atmospheric pressures and continuously heating to activation temperature; cooling the reaction system to below 150 DEG C after the activation is finished, stopping introduction of the inert gas and continuously introducing air; and after the reaction system is cooled to below 100 DEG C, taking the activated material out and dissolving KOH and K2O in the activated material with water to realize recovery of KOH. The invention also discloses a device used by the productionmethod. By using the method and the device, the problem of serious production safety caused by production and releasing of monomer potassium in the process of producing the super active carbon by KOHactivation can be solved, so that industrial production of the super active carbon by applying the KOH activation method comes true.

The invention discloses a discharge method of a waste lithium ion battery. The lithium ion battery is soaked in salt water being 3-5% in mass concentration for 10-15 days with stirring for one time per 2-3 days; then the lithium ion battery is taken out and washed by water and is dried, and is placed in a battery case in the bottom of a needle punching machine; a needle head of the needle punching machine is pierced into the interior of the middle of the lithium ion battery and then is pulled out after the needle head stays at the interior of the lithium ion battery for at least half an hour. The discharge method only includes two steps, is simple and safe and can discharge the battery completely.

Provided is a coal mine gas prevention method for eliminating coal mine gas explosion, burst and exceeding by injecting nitrogen from the ground to discharge and mine coal bed gas. The method comprises the steps that wells are drilled from the ground, the high pressure nitrogen is injected into one or more coal beds from the multiple nitrogen injection wells, desorbing of the coal bed gas is reinforced, the desorbed gas is driven to be transported to the production wells from the nitrogen injection wells, the gas or mixed gas of the gas and the nitrogen is obtained from the multiple production wells, the coal bed gas content is decreased, the risks of coal mine gas explosion, burst and exceeding are eliminated, the utilization rate of the coal mine gas is increased, the gas discharged to the atmosphere during coal mine mining is reduced, and the atmosphere environment is protected. By adoption of the method, the coal bed gas content can be effectively decreased to be lower than the residual gas content set according to the coal mining safety requirements, and the gas produced by the production wells through the method can be fully utilized basically.

The invention discloses a horniness metal cutting coal teeth for mine, including the taper head, the taper head is equipped with some convex thread of the same rotary direction, there is concave thread with the same rotary direction between the convex thread. After the cutting coal teeth is installed on the roller of the development machine, when constructing, the convex thread on the cutting coal teeth comes in for the continuing impact and compression resistance of the terrane, it will bring the whole cutting teeth, along screw thread the opposite rotary direction axial rotation in roller upper seat, to avoid a part of head face of cutting coal teeth has always contact with the rock and abraded, resulting in cutting coal teeth fracture. The concave thread can be used as the access for heat, rock powder and gas, to absorb the dust water that the tooth seat insufflation, to protect the teeth sharp at low temperature of the rock cutting efficiency and the overall endure milling capability of the teeth.

A flame-free aromatizer burner is fastened at an aromatherapy essence ceramic core using the ceramic core fixing assembly; the electrothermal device is joined with a control circuit board; and the electrothermal device and the control circuit board heat up the ceramic core to 1100 degrees Centigrade. Essence particles in the aromatherapy essence ceramic core are aerosolized by a high temperature to produce an aroma, and a power supply is automatically cut off when having completed a heating process. The structure is capable of aerosolizing essence particles without requiring a flame, thereby eliminating potential explosions caused by igniting the ceramic core using a flame.

The invention discloses a process and a system for continuous preparation of phenylenediamine. With the process provided by the invention, benzene is used as a raw material; a solid acid catalyst is adopted; meanwhile, mixed acid is added; two-stage continuous nitration is performed; obtained mixed dinitrobenzene is directly subjected to two-stage continuous hydrogenation reduction without being separated; thus, the phenylenediamine is obtained. According to a scheme of the invention, a large amount of nitrobenzene and dinitrobenzene is not needed to be stored in the process; meanwhile, by adoption of a continuous pipeline reaction, a material is not accumulated, so possibility of sudden explosion is fundamentally eliminated; and the process is an intrinsically-safe preparation process forthe phenylenediamine.

A dehydrogenation method of CO2 charge gas for synthesizing urea includes the following steps: firstly, using active carbon or iron oxide normal-temp. desulfurizer to remover H2S from CO2 charge gas,then using the normal-temp. hydrolyst to hydrolyze orgnaic sulfur at 40-100 deg.C, then using active carbon or iron oxide refined desulfurizer to make desulfurization up to total sulfur content in the gas be less than 0.5 ppm, then using dehydrogenation catalyst containing Pt-Pd dual noble metals or TH-3 type rare earth metal element-contained Pt-Pd dual noble metals dehydrogenation catalyst to mare dehydrogenation, removing H2 from CO2 charge gas and making H2 content be less than 300 ppm under the conditions of that its inlet temp. is 120-250 deg.C and pressure is les sthan 20 MPa. The saidmethod is applicable to urea plant using coal or heavy oil to produce gas, can eliminate the hazard due to accumulation of H2, and can prolong catalyst life to about 5 years.

Disclosed herein is a connector terminal. The connector terminal has a coupling terminal unit including upper and lower coupling terminal parts each of which contacts a connection terminal unit and a connection body terminal unit at two or more contact points, respectively. The two or more contact points include at least two inside contact points formed at each of the upper and lower coupling terminal parts of the coupling terminal unit such that the at least two inside contact points protrude inward of the coupling terminal unit and at least two outside contact points formed at each of the upper and lower coupling terminal parts of the coupling terminal unit such that the at least two outside contact points protrude outward of the coupling terminal unit.

The invention discloses a switch cabinet which is applied to the input side and the output side of a high-voltage frequency converter; the switch cabinet is characterized in that: a contactor (K1) for controlling the switch of the input side of the high-voltage frequency converter, a contactor (K2) for controlling the switch of the output side thereof and a contactor (K3) for power frequency switching over are arranged in the switch cabinet; two separating trolley type high-voltage separating switches (QS1, QS2) are arranged at the outer sides of the contactor (K1) of the input side and the contactor (K2) of the output side; the two separating trolley type high-voltage separating switches (QS1, QS2) are respectively composed of three fixed contacts and three moving contacts; six pairs of switch contacts can be arranged in a smaller space by adopting the structure; when maintaining the switch cabinet, the trolley is pulled out, and obvious visual break point exists in a high-voltage loop, thus realizing electric isolation between the high-voltage output side and the cabinet output side and the high-voltage frequency conversion and ensuring maintenance work to be safe.

A bullet projectile is described with an internal magnetic hammer providing electromagnetic induction upon impact.

The invention discloses a rotary kiln, comprising a rotary kiln main body used for stirring raw materials fed to the interior, and injected with gas; and a main support unit connected to rotate the rotary kiln main body, and possessing a changeable sealing portion correspondingly changing with the rotary path of the rotary kiln main body.

Belonging to the technical field of environmental protection treatment, the invention relates to metal dust centralized recovery and treatment equipment. The equipment comprises a plurality of recovery pools, reservoirs and a sewage filter. The sewage filter comprises a filter frame, a filter screen, a filter screen drive mechanism, a metal dust scraper and a back flushing water tank. The system provided by the invention performs centralized recovery and treatment on metal powder, can separate metal dust in real time and can reduce oxidation loss, the whole process realizes complete automation, the metal dust recovery efficiency is greatly enhanced, and the pollution rate of metal processing workshops can be reduced. Metal powder is recovered by water flow, and the water spraying speed is controlled by the blower negative pressure water pressure, thus eliminating dust explosion, and also enhancing the safety of metal processing workshops. The equipment provided by the invention can eliminate the production halt standby defect and improve the production efficiency.

The present invention discloses an automatic optimization configuration method and system of a database, applied to a DB2 database. The method comprises: establishing a configuration base, a rule base, and a benchmark test case base according to a rule of the DB2 database; obtaining a configuration parameter of the configuration base according to a category in the configuration base; selecting a running benchmark test case from the benchmark test case base; setting a parameter value according to the rule base, and forming a configuration parameter combination according to a permutation and combination strategy; modifying a DB2 database startup configuration file according to each configuration parameter combination, and running the benchmark testing case, to obtain a test result of each configuration parameter combination, and performing analysis by using the test result of each configuration parameter combination according to work load corresponding to each configuration parameter combination, to obtain an analysis result; and obtaining an optimized configuration parameter combination of the DB2 database according to the analysis result. According to the automatic optimization configuration method, the configuration difficulty can be reduced.