33results about How to "Improve the level of intrinsic safety" patented technology

The invention provides a ground remote control system for downhole electric locomotives, and belongs to the technical field of downhole mining. The ground remote control system for the downhole electric locomotives comprises a dispatching and ore blending unit, a locomotive unit, an operation unit, an ore loading unit and an ore unloading unit. The dispatching and ore blending unit comprises a digital ore blending system and a digital locomotive dispatching system; the locomotive unit comprises a downhole electric locomotive transport system and an electric locomotive automatic protection system; the operation unit comprises a downhole narrow gauge signal concentrating locking control system, a control console system, a wireless communication system a 100 M network communication system and an uninterrupted power system; the ore loading system comprises a draw shaft remote ore loading system and a draw shaft remote ore loading video monitoring system; the ore unloading system comprises an automatic ore unloading system and an unloaded-ore automatic sweeping system. The ground remote control system for the downhole electric locomotives has the advantages that work of a downhole electric locomotive driver and work of an ore drawing worker are integrated, the working position is moved to the ground from the downhole, the intrinsic safety level is improved, occupational diseases are avoided, safe and efficient operation of the electric locomotives is ensured, operation is simplified, the operation ratio of the electric locomotives is improved, machine-hour efficiency of the electric locomotives is improved, production and organization efficiency is improved, and stability of the output grade 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 discloses a source network load storage coordination level evaluation method based on a risk thought. The source network load storage coordination level evaluation method is characterized in that a source-grid-load-storage coordination level evaluation model is provided under the background that the source-grid-load-storage coordination optimization mode becomes the development trendof the power system; the source-grid-load-storage coordination level evaluation model firstly analyzes internal and external uncertain factors affecting the coordination ability of the system based on the idea of risk identification, and then establishes an evaluation index system considering multi-agent interaction and layering; and secondly, the source-grid-load-storage coordination level evaluation model proposes a quantitative calculation method of quantitative indexes and a processing mode of qualitative indexes, establishes a source-network-load-storage coordination level evaluation model, and determines the weight of each level of indexes by using an analytic hierarchy process and a Delphi method in combination with an empowerment method. According to the constructed evaluation model, the source-grid-load-storage coordination level of the power system is scientifically and systematically evaluated for planning schemes of three areas of a certain province, and a decision reference is provided for planning and operation scheme optimization of the power department, and the intrinsic safety level of the system can be improved.

The invention discloses a whole lifecycle safety management and control and emergency system and a whole lifecycle safety management and control and emergency method of industrial explosives. The whole lifecycle safety management and control and emergency system of the industrial explosives comprises an industrial explosive RFID (radio frequency identification) tracing intelligent management and control system and a civil explosive emergency information platform, wherein the industrial explosive RFID tracing intelligent management and control system comprises an industrial control system, a video monitoring system and a civil explosive road transportation vehicle monitoring system, and the industrial control system, the video monitoring system and the civil explosive road transportation vehicle monitoring system carry out real-time communication with the civil explosive emergency information platform through an Internetwork. The whole lifecycle safety management and control and emergency system and the whole lifecycle safety management and control and emergency method of the industrial explosives have the advantages of safety, real time, reliability, high informatization and the like.

The invention provides an intelligent routing inspection method and system for a gas pipe network, and solves the technical problem that the existing intelligent routing inspection is lack of effectively sensing the complete information dimension of the environment space of the pipe network. The method comprises the following steps: segmenting a pipe network space to form design feature description of entity resources in a local space; continuously sampling physical attributes of the entity resources in the local space to form morphological feature description; continuously sampling environment attributes of the entity resources in the local space to form environment feature description; performing offset quantization through continuous morphological feature description and environment feature description to form objective situation description of a pipe network space; and obtaining subjective situation description of the entity resource according to the design feature description, and evaluating the operation state and the state trend of the entity resource according to the objective situation description and the subjective situation description. And obtaining rich objective description dimensions corresponding to the subjective description dimensions in the objective environment. Objective situation description based on objective environment performance data is formed, and the intrinsic safety level of gas enterprises is improved.

The invention discloses an intelligent interception key interlocking system, which consists of an intelligent key management and control system, an interception key interlocking system and an auxiliary hasp padlock system. The system comprises the following use steps: S1, obtaining authorization of the intelligent key management and control system; S2, taking out a corresponding authorization keyfrom the intelligent key cabinet; S3, inserting a key to cut off a power source, and releasing a safety key A; S4, inserting the safety key A, and replacing an access control key from an interlockingconverter; S5, inserting the access control key to open an access door; S6, entering a maintenance area and unlocking an internal control bolt lock; and S7, restarting the equipment, and correctly resetting the authorization key after quit of personnel. According to the invention, hierarchical and classified management and control of personnel entering a protection area can be standardized, mechanical protection and maintenance energy isolation are combined, the essential safety of an enterprise is improved, and the authorization management level of the enterprise is improved through the intelligent management and control specification.

The invention relates to a subsection intelligent controller for an underground electric locomotive string, which belongs to the technical field of controller structures and comprises a control switch. The input end of the control switch is connected with a power supply, a Hall current transformer is arranged between the power supply and the control switch, the control switch comprises a digital logic circuit and a transistor IGBT, the output end of the IGBT is connected with the string, a gate pole of the IGBT is connected with the output end of an oscillator and a rail connected with the ground, the output end of the oscillator is connected with an inductor which is connected with the string, a capacitor is installed in a locomotive on the rail, and the capacitor is connected with the string through an electric arc. The subsection intelligent controller is reasonable in circuit design and capable of shrinking string electrification range as much as possible, shortens string electrification time and greatly reduces accident incidence.

The invention discloses a mine intelligent permanent magnet vacuum circuit breaker, which comprises an intelligent permanent magnet vacuum circuit breaker, an upper computer, a driving board, an ARM interface and a photoelectric signal, and is characterized in that the intelligent permanent magnet vacuum circuit breaker comprises a digital signal processor (DSP) chip, an ARM processor chip, a PLC and an ARM interface, the input end of the intelligent permanent magnet vacuum circuit breaker is electrically connected with the output end of the digital signal processor (DSP) chip, and the input end of the intelligent permanent magnet vacuum circuit breaker is electrically connected with the output end of the ARM processor chip. According to the permanent magnet vacuum circuit breaker, intelligent components and reliable elements are adopted, and the permanent magnet vacuum circuit breaker has an online monitoring technology and an intelligent operation technology through a network communication technology, so that the breaking capacity and the service life of the intelligent circuit breaker are improved, and the overvoltage in the underground coal mine power gridand the interference of power grid harmonic waves are well inhibited so as to greatly improve the reliability and the service life of the circuit breaker and improve the breaking capacity of the circuit breaker.

The invention discloses a key operating vehicle safe operation early warning and emergency risk avoiding system, which comprises a basic information input unit, an identity verification unit, a vehicle inspection unit, a driver monitoring unit and a vehicle driving environment monitoring unit, and has the beneficial effects that the real-time video monitoring of the vehicle operation condition can be realized; the intrinsic safety level of vehicle operation can be improved, and the positive effect on reducing accident potential is achieved; monitoring personnel can send voice reminding information to a vehicle in real time, illegal behaviors such as smoking, calling and fatigue driving of a driver are corrected in time, and therefore accident potential is reduced, enterprise cost is indirectly reduced, internal management of an enterprise is refined, and quality of employees is improved; in addition, illegal behaviors of the driver can be captured in real time for evidence obtaining and uploaded to a city platform for storage, real, transparent and effective information data of transportation enterprises are provided for supervision departments, and the industry safety level can be improved.

The invention relates to the field of output rotating shaft angular velocity measurement of a to-be-measured object. The invention discloses a method for realizing multifunctional speed measurement of a rotating mechanism based on a logic controller. A coded disc is prepared according to the diameter of an output rotating shaft of a to-be-measured object; a proximity switch is installed on the to-be-measured object, a transmitting head and a receiving head of the proximity switch are aligned with the through hole circle of the coded disc, and the proximity switch is connected with a PLC; and the PLC receives signals of the proximity switch to form pulses, the total pulse number A is obtained in a time period T, the angular velocity [omega] of the output rotating shaft of the object to be measured is equal to 2[pi]*A/(T*N), N is the number of the through holes, and [pi] is the circumference ratio. Various defects existing in a complex industrial field environment when a traditional integrated pulse speed measuring device is used are overcome.

The invention discloses a method for robot safety level assessment. The method comprises the following steps that 1, according to an input module in a robot integrated system and a logical control module and an output module in a control cabinet, a minimum safety performance control unit PLs is determined; 2, the number of input units Nlow is determined; and 3, the overall safety performance level PLr is determined. According to the method, through assessment of the robot safety level, the robot safety level can be assessed in the design early stage, thus risks are reduced or eliminated in the design source, the intrinsic safety level of a machine is improved, and safe production of the manufacturing industry is facilitated. The integral safety level of a set of system can be assessed vividly and digitally, and a feasible assessment tool is provided for a designer.

The invention discloses an electric intelligent bracelet based field safety management and control system, which comprises multiple bracelet modules and a background server, wherein the bracelet modules are worn on hands of constructors; the background server is wirelessly connected with the bracelet modules; each bracelet module comprises a CPU module, a physiological sensor, a fingerprint sensor, a communication module and a GPS module; and the CPU modules are all electrically connected with the physiological sensors, the fingerprint sensors, the communication modules and the GPS modules. Byusing the system, an intelligent bracelet device and a background data analysis system are integrated; and an electric construction field is visualized through the identity identification, physiological characteristic monitoring and positioning function of a bracelet. The safety management in a conventional safety management module can be carried out separately; the deficiencies that a detail islacked and the beforehand early warning intervention is lacked in an operation process are improved; further, the conventional safety management is upgraded to a management mode which is transparent in operation process, controllable in critical operational node and predictable in safety effect; and the nipping-in-the-bud ability of an electric department is increased.

The invention relates to the field of heat exchangers, and discloses a heat exchange unit and a heat exchange reactor. The heat exchange unit comprises a base body (4), and a heat exchange medium channel (1) and reaction fluid channels (2) which are arranged in the base body (4), and is characterized in that the heat exchange medium channel (1) is positioned in a center of the heat exchange unit,the plurality of reaction fluid channels (2) are dispersedly wrapped outside the heat exchange medium channel (1), wherein the heat exchange medium channel (1) is parallel to the axial direction of the reaction fluid channels (2). For a strong exothermic reaction process with high risk, stable process parameter control and passive intrinsic safety level improvement can be realized.

According to the technical scheme, the automatic fire extinguishing system is characterized by comprising a central control module, an environment temperature monitoring module, a communication module, a flame monitoring module, an automatic fire extinguishing device and an outer end server, the environment temperature monitoring module is used for collecting the nearby environment temperature in real time, and the communication module is used for communicating with the central control module; the flame monitoring module is used for capturing a flame signal, setting a flame time monitoring threshold value, and feeding back the flame signal to the outer end server when the duration time of the flame signal exceeds the flame time monitoring threshold value; the central control module is used for receiving the environment temperature signal and the flame signal, and when the environment temperature signal and the flame signal coexist, the central control module sends a fire extinguishing signal to the automatic fire extinguishing device; the automatic fire extinguishing device performs fire extinguishing operation according to the fire extinguishing signal, and the automatic fire extinguishing system can integrate various monitoring and realize integrated monitoring operation, so that the effect is greatly improved, and the automatic fire extinguishing system can be repeatedly used.