135 results about "Safety engineering" patented technology

The invention belongs to the field of oil and gas safety engineering and particularly relates to a device and a method for detecting the combustible gas leakage. The method belongs to a new method for realizing the fuel gas on-line detection and positioning in China, has the advantage of intermittent controllability and can also be used in process systems for gas taking detection and analysis on other gas. Through the arrangement of a first electromagnetic vacuum valve, a second electromagnetic vacuum valve, an automatic control proportion valve, a combustible gas detector and a gas pressure sensor, the goals of stable pressure in a continuous or intermittent control container and the combustible gas leakage detection are effectively realized. The device and the method have the advantages that the operation is convenient, the structure is simple, and the problems in two aspects including the on-line detection of the combustible gas and the stable pressure in a negative pressure container are mainly solved, and simultaneously, an automation control interface is also reserved for providing the possibility for the system full automation realization.

The invention relates to an experiment device and method for simulating gas-coal dust explosion in underworkings of a coal mine, and belongs to the technical field of safety engineering of the coal mine. Requirements on the experiment device and method for the gas-coal dust explosion in the underworkings of the coal mine are met. Gas-coal dust is poured into an explosion cavity, and when a pressure value in the explosion cavity is equal to that of outside atmospheric pressure, a high-energy ignition cabinet controls an ignition electrode on the explosion cavity to ignite, so that the explosion experiment of the gas-coal dust is realized, and exploded gas and the like are diffused through a gas explosion diffusion pipeline and gas explosion diffusion branches; pressure sensors and flame sensors are used for monitoring the pressure and the flame in the gas explosion diffusion pipeline during explosion in a real-time manner, and transmitting pressure data and flame data to a high-speed data acquisition unit, and the pressure data and the flame data are saved in an industrial computer. The experiment device and method disclosed by the invention are suitable for observing gas explosion of the coal mine.

The invention belongs to the technical field of mining and safety engineering and discloses a rock burst control method in a deep mining area of a coal mine. The method comprises the following steps: a, arranging a first coal mining face on an upper coal seam in a mining area uphill direction; b, arranging a mining area uphill preparation roadway group in a stress decreasing area below the gob; c, arranging an upper coal seam working face and a lower coal seam working face on two sides of the main system for performing stoping after the uphill preparation roadway group is formed; d, performing local pre-unloading treatment or rock burst danger releasing measures on a haulage way, a tail gate, an open-off cut and the like of the upper coal seam working face. The invention provides a method for effectively improving the rock burst control effect in the deep mining area of the coal mine.

The invention belongs to the field of oil gas safety engineering, and particularly relates to a device and method for monitoring natural gas pipeline leakage on line in real time through sensing cables. The method is a novel method for monitoring and positioning natural gas pipeline leakage through the sensing cables at present, and can be used for monitoring and positioning of other hydrocarbon medium pipeline leakage. The sensing cables 5, a resistance detector 1, a cable connector 4, a common cable 3, semi-permeable membrane detection tubes 6 and a front probe 2 are arranged, wherein the resistance detector and the common cable are connected, the common cable and the front probe are connected through the cable connector in an alternating mode, the front probe comprises a plurality of the sensing cables and a plurality of the semi-permeable membrane detection tubes, and the sensing cables are arranged in the semi-permeable membrane detection tubes, so that the aims of online real-time monitoring and positioning of natural gas pipeline leakage are effectively achieved. Accordingly, the device and method have the advantages of being simple in structure, high in flexibility, free of error alarms, long in use period and convenient to overhaul and replace.

The invention provides an efficient wood dust-removing and explosion-controlling safety engineering integrated system. The efficient wood dust-removing and explosion-controlling safety engineering integrated system comprises a dust-removing system, a dust collecting and conveying system, an environmental protection emission system of a secondary dust filtrating device, and a dust explosion-preventing, monitoring and alarming intelligent safety control system, wherein the dust collecting and conveying system is provided with a belt scraper-type dust conveying mechanism and a pneumatic dust conveying mechanism; the dust explosion-preventing, monitoring and alarming intelligent safety control system is provided with a wind pressure difference monitoring and alarming device, a temperature monitoring device, a dust cleaning device monitoring and alarming device, a dust discharging device monitoring and alarming device, a conveying device monitoring and alarming device and a fire detecting and alarming and automatic fire-extinguishing system for real-time online intelligent working condition safety monitoring. The efficient wood dust-removing and explosion-controlling safety engineeringintegrated system has the beneficial effects as follows: intelligent safety control on fault displaying and alarming, automatic fire extinguishing starting and protection, fault abnormality eliminating and resetting and system protection interlocking of each device and system can be achieved; the safety of wood dust removal and dust collection is guaranteed; dust explosion and fire accidents are avoided.

The invention relates to the field of gas explosion safety engineering and in particular relates to an ignition energy variable completely-transparent pipeline gas explosion experiment platform and method. The experiment platform comprises an experiment pipeline, a vacuum meter, a pressure meter, a vacuum pump, an air valve, a circulation pump, a gas valve, two pressure sensors, an ignition control box, a data acquisition instrument and a computer, wherein the experiment pipeline is a completely transparent quartz pipe. The experiment platform is capable of synchronously triggering acquisition and ignition in the completely transparent quartz pipe under the ignition energy variable condition, accurately measuring explosion pressure and recording the flame propagation condition, and is simple to operate, low in cost, convenient to mount, high in safety performance and easy to popularize.

The embodiment of the invention provides a fire safety training system, and belongs to the technical field of safety engineering and information. The fire safety training system comprises a model library used for constructing and storing a plurality of three-dimensional models for fire safety training; a course library used for storing training courses, and each training course has an associated three-dimensional model in the model library;a operation terminal used for displaying a training interface to a user; a training platform device which is applied to the operation terminal and used forconstructing a plurality of core function modules for fire safety training. Wherein the core function module is configured to call the training course from the course library in response to an operation of a user on the training interface, and display the training course on the training interface in a manner that the user can virtually operate in combination with the three-dimensional model associated with the called training course. The fire safety training system can effectively enrich the content of fire safety training and optimize the current fire drill mode and effect.

The invention discloses a method for determining minimum ignition energy of combustible gas in a semi-open space. The determination method disclosed by the invention is an up-and-down method. A comprehensive test device for the blasting characteristics of the combustible gas is mainly composed of a gas delivery and preparation system, a gas pre-mixing system, an explosion chamber, an ignition system and a data acquisition system. Main test items comprise a gas layered test, a gas concentration test, an explosion upper-limit and lower-limit test, an explosion pressure and temperature test, a minimum ignition energy test, an explosion process research, a combustible gas cloud formation and diffusion research, and an explosion suppression effect search. According to the method disclosed by the invention, the mixing of the combustible gas and air is relatively uniform; and the improved 20L gas explosion test device has the advantages of being practical, convenient, cheap and the like, and can be used as a standard test device and a demonstration device for scientific research and teaching in the safety engineering major and the fire and explosion protection major.

The invention provides a generalized approximate modeling method based on fitting sensitivity for aero-engine performance, and model application. The invention relates to a generalized approximate modeling method for aero-engine performance, and model application. The over-fitting and under-fitting problems in an existing model are solved. The generalized approximate modeling method comprises the steps of (1) establishing a generalized approximate model based on fitting sensitivity for aero-engine performance; and (2) solving parameters of the established generalized approximate model based on fitting sensitivity for aero-engine performance. The step (2) comprises the steps of (21) setting a value of p; (22) setting an adjusting coefficient [epsilon] of suppressing excessive under fitting; (23) setting an integral compression coefficient a for xk according to the generalized approximate model based on fitting sensitivity for aero-engine performance, and a compression coefficient b for xk according to |xk-yk|; and setting an integral migration amount c1 according to the step (21) to the step (23). The generalized approximate modeling method is used in the aero-engine operation, maintenance and safety engineering field.

The invention relates to the technical field of coal mine safety engineering, and discloses a supporting device for coal mine safety engineering protection. The supporting device comprises a first supporting fixed cone, and a supporting column is fixedly mounted at the top of the first supporting fixed cone. According to the supporting device for coal mine safety engineering protection, broken stones at the top are shielded through baffles and are prevented from hurting pedestrians, the baffles bear force from the broken stones, force is transmitted to a triangular bearing frame through bearing springs, a supporting plate is still in contact with the top of a channel due to tension effect of extension springs, and the triangular bearing frame descends; under the combined action of an air spring column, a pressure spring and a buffer spring, downward force is buffered, and a second magnet and a first magnet repel each other, so that the action of the force is further relieved; and therefore, broken stones above a coal mine channel are prevented from falling down and injuring workers, the situation that the service life of the baffles is shortened due to the fact that the baffles are damaged by the broken stones and coal mining work is not facilitated is avoided, and use by a user is facilitated.

The invention provides a high-gate structure and a high-gate machine, and relates to the technical field of safety engineering. The high-gate structure comprises a gate body and a rotating door; the gate body is provided with an opening, and a driving device drives the rotating door to be rotationally arranged on the gate body, so that the opening is opened or closed; a card reader is arranged on the gate body and used for transmitting card information to a controller; the high-gate structure further comprises the controller used for receiving the card information; the controller controls the driving device. In the high-gate structure, by means of the card reader for reading the card information, the controller controls the rotating door to be rotationally arranged on the gate body, and the opening can be opened or closed according to the card information. Once a signal is received, one person is allowed to pass through, and it can be automatically prevented that a plurality of people pass through, so that the high-gate structure has the advantages of being high in safety performance, convenient to use and the like.

The invention belongs to the field of software safety engineering of aeronautic equipment complex software engineering, and discloses a risk indicator indexing matrix-based aeronautic equipment software importance grading method. Through combining characteristics of domestic aeronautic engineering and considering operability of practical engineering application, the risk indicator indexing matrix-based aeronautic equipment software importance grading method is put forward; and according to the method, two factors in are considered when system risk analysis is carried out: a system risk severity grade and a system risk software control grade. Risk importance is considered from two aspects: influence on system safety (casualties, equipment damage and environment destroy), and influence on mission functions (flight missions and operational missions), so as to provide basis for aeronautic equipment mission system software importance grading. The factor of risk occurrence possibility whichis difficult to calculate or assessment in engineering is not considered, so that the practicability and operability of engineering application are improved.

An embodiment of the invention provides a safety simulation training system for petrochemical sales enterprises and belongs to the technical field of safety engineering techniques and information techniques. The safety simulation training system for petrochemical sales enterprises comprises: an operation practical training system including a plurality of physical operation regions set up by simulating production sites of petrochemical sales enterprises; and a virtual training system including a course library, an operating terminal and a training platform device, wherein the course library isused for storing training courses, the operating terminal displays the training courses in response to the user's operations for a training interface, the training platform device constructs multiplecore function modules for safety training of petrochemical sales enterprises, and the core function modules are configured to call the training courses from the course library and display the called training courses in a manner of being virtually operable to the user, wherein the training courses include simulation training courses for the physical training regions, and the core function modules include simulation training modules corresponding to the simulation training courses. The safety simulation training system for petrochemical sales enterprises can provide effectively improved enterprise safety raining efficiency and effect.

The embodiment of the invention provides a cloud platform device and system for team safety training, and belongs to the technical field of safety engineering and information. The cloud platform device adopts a layered architecture, and sequentially comprises an infrastructure layer, a cloud management layer, a group management layer and a group management layer from bottom to top, wherein the infrastructure layer is used for providing physical resources suitable for team safety training and carrying out virtualization processing and cloud management on the physical resources; The data servicelayer is used for providing data resources suitable for team safety training; The platform service layer is used for developing an application service and a management service suitable for team training by adopting a micro-service packaging mode based on the physical resources and the data resources; And the software packaging layer is used for packaging and releasing the training platform for the service developed by the platform service layer. The scheme of the invention can be used for carrying out team safety training activities in various forms, and can realize continuous updating of training contents in a cloud push mode.

The invention discloses a petrochemical enterprise emergency resource management and scheduling system and method, and particularly relates to the technical field of geographic information technologyand safety engineering. The petrochemical enterprise emergency resource management and scheduling system is based on a geographic information system technology, and comprises an emergency resource daily management module, an emergency resource scheduling module under an accident, a geographic information system module and a system maintenance module which are associated with one another, the emergency resource daily management module carries out unified management on information of emergency monitoring instruments and equipment, emergency rescue facilities, emergency communication equipment, emergency protection equipment, medical rescue facilities and emergency vehicles. The emergency resource scheduling module under the sudden accident is combined with an emergency command scheduling service under a petrochemical enterprise on-site sudden event, and is linked with an emergency command system of a petrochemical enterprise to obtain the geographic position of the accident, so that theemergency resource comprehensive scheduling under the sudden accident state is realized.

The invention relates to a preparation method of silica-based hybrid mesoporous material and a preparation method of a quartz crystal microbalance dimethyl methylphosphonate (DMMP) sensor coated by the silica-based hybrid mesoporous material, which belongs to fields of sensor technology and safety engineering. The method adopts the silica-based hybrid mesoporous material functionalizing hexafluoroisopropanol anilino group as gas sensing material for absorbing DMMP, not only sufficiently utilizes the advantages of large specific surface, good adsorptive property and uniform bore diameters of the mesoporous material, but also ensures that the gas sensing material has good selectivity through the functionalization of organo-functional group. The DMMP gas sensor prepared by the method of the invention has the characteristics of high sensitivity, high response speed, good repetitiveness, good selectivity, simple device manufacture process and the like.

The invention relates inter alia to an operator control device (30) for controlling a safety-engineering installation (10, 300), wherein the operator control device (30) has a computer device (50), a display device (60, 100) which is connected to the computer device (50) and which can display an operating state of the safety-engineering installation (10, 300) and is actuated by display control signals (AST) from the computer device (50), and an input device (60, 110), connected to the computer device (50), for an operator to input control commands (STB). According to the invention, the computer device (50) is configured to monitor the dynamics of the input behaviour by the operator and, if a prescribed measure of dynamics is undershot, request the operator to check the correct operation of the display device (60, 100).

A joint unit such as for mounting the vehicle control arm of a motor vehicle, is provided with a control arm-side housing (1), in which a pivot pin (2) is mounted pivotably by means of a spheroidal bearing surface (3), wherein the joint unit has a securing unit against the separation of the housing (1) from the pivot pin (2). The securing unit includes a securing bolt (9), arranged within the pivot pin (2) essentially in parallel to the central longitudinal axis of the pivot pin (2) and with a blocking element (12) at a free end. A securing mount (13) is located within the housing (1) or the pivot pin (2) and in this the blocking element (12) is mounted in a contactless manner in the mounted state of the joint unit. The securing mount (13) is part of the securing unit, and the securing bolt (9) is fixed to the component of the joint unit (housing (1) or pivot pin (2)) that is not provided with the securing mount (13). Redundant securing of a joint unit against separation of the housing (1) from the pivot pin (2), which is not visible from the outside and is thus advantageous from both a safety engineering viewpoint and a visual viewpoint is achieved.

The invention discloses a curing agent with higher curing ability and a use method thereof, and belongs to the technical field of solid waste disposal and resource utilization. The curing agent with higher curing ability is prepared from the following raw materials in parts by weight: 50 to 90 parts of active admixture, 0 to 5 parts of micro-silicon fume, 5 to 15 parts of cement, 5 to 15 parts ofa sulfate activator, 0 to 15 parts of calc-alkali and 1 to 2 parts of super absorbent resin. According to the curing agent disclosed by the invention, the defect of poorer early strength of a fillingbody in the existing iron tailing backfill technology is overcome and extremely-high dispersion can be maintained under a water-rich system; the curing agent is in full contact with the active admixture and provides a high PH alkaline environment for activating the active admixture, so that the activity of the active admixture is quickly activated and the early strength of the iron ore tailing filling body with high water content is effectively improved to meet the safety engineering requirements of filling.

The invention relates to a unilateral-control between-high-rise both-way traction rope system, belongs to the field of mechanical control and safety engineering projects and aims at achieving the technical purpose that professionals erect and operate the traction rope system between an stricken high-rise and a safety high-rise on the safety high-rise in an overall unilateral manner. The traction rope system mainly comprises a traction rope, traction rope hooks, a traction ring, both-way tractors, a pulley support with an anchor hook, a fixing base frame of the pulley support and a remotely-piloted vehicle. Firstly, the traction rope on the safety building is arranged on the pulley support with the anchor hook in a sleeving manner, then the remotely-piloted vehicle is controlled to convey and throw the pulley support to the fixing base frame of the stricken high-rise, the anchor hook is firmly clamped on the fixing base frame, and accordingly the system erected in a unilateral manner is finished. The both-way tractors on the safety between-high-rise are used, and the traction rope system can be operated unilaterally. Correctness and reliability in the erecting process of the system can be effectively guaranteed, a person does not need to worry about the traction power source failure of the stricken high-rise, and the problems of disorder and low efficiency of coordinated matching of both sides are solved.

The invention discloses repair wiring equipment used for urban electric power construction safety engineering and a use method thereof. The repair wiring equipment comprises a box body; a gear box ismounted on the top of the box body, and a rotary handle is mounted on one side of the gear box; a connecting rod rotationally mounted on the box body is mounted at the bottom of the gear box, and theconnecting rod is in transmission connection with the rotary handle; a winding wheel positioned in the box body is mounted at the bottom of the connecting rod, and the winding wheel adopts a hollow structure; the winding wheel is wound with a power transmission line; a movable terminal positioned on the outer side of the box body is mounted at the movable end of the power transmission line; and anupper clamping base is welded on one side, close to the movable terminal, of the box body. A rotating wheel disclosed in the invention can drive a lower clamping base to slide on the box body to enable a lower clamping groove in the lower clamping base and an upper clamping groove in the upper clamping base to jointly fix the power transmission line, so that loosening of the power transmission line in a use state on the winding wheel can be avoided.

An information safety engineering combined practice platform system includes the following five layers: an basic facility layer, a safety service function layer, a safety service management layer, an application layer and a user management layer, among which, the basic facility layer is the lowest one of the platform structure connected with the service function above it via hardware interface, the safety service management layer connected with the function layer downward is the core of the system connected with the application layer via the general service interface which is above the service management layer and the user manage layer is linked to the application layer via a man-machine interface characterizing: 1. opening structure, 2. extendable, 3. multifunction integration 4. forming itself complete safeguard system.

The invention relates to a steel shell and concrete combined structure member thermodynamic coupling loading test device and method and belongs to the technical field of safety engineering experiments. The test device comprises a force-bearing frame, a force sensor, a jack, a displacement meter, a thermal insulation cushion block and a test member, wherein multiple thermocouple temperature sensorsare installed inside the test member; on a plane of the test member, the thermocouple temperature sensors are uniformly arranged and are symmetric about a transverse partition plate and a longitudinal partition plate; and in the thickness direction of the test member, the thermocouple temperature sensors are arranged according to a certain gradient. Through the test device and method, mechanicalbehaviors of a steel shell and concrete combined structure under a fire and a high temperature can be obtained, wherein the mechanical behaviors include a member section temperature distribution law under the fire and the high temperature, a member deformation development law, damage evolution characteristics under the action of thermodynamic coupling and the like; and the bearing capacity changeof the steel shell and concrete combined structure under the fire condition can be obtained, and the influences of the fire and the high temperature on the member bearing capacity are assessed by comparing test results of member mechanical characteristics before and after a fire resistance test.