42results about How to "Avoid destructive damage" patented technology

The invention relates to a fire detection, prevention and control system of an electronic control cabinet. The fire detection, prevention and control system comprises a data acquisition device, a fire extinguishing device and a main control device which are arranged in an electronic control cabinet body, wherein the data acquisition device is used for acquiring detection data of each detection node in the electronic control cabinet in real time, and transmitting the detection data to the main control device; the fire extinguishing device is used for accepting a control signal sent by the main control device, and carrying out fire control and processing on an area with a fire early warning; a fire extinguishing control module is used for sending a control signal to the fire extinguishing device according to the instruction of a CPU (central processing unit) core module. The invention further discloses a control method based on the system. The control method comprises the following steps: transmitting the CO and smoke concentration acquired in real time to the CPU core module; processing by a pre-detection data filter model to obtain a characteristic extraction value; if fire early warning standards are met, sending an early warning or starting the fire extinguishing device. The fire detection, prevention and control system and the control method disclosed by the invention are capable of performing real-time detection on a small space such as the electronic control cabinet, eliminating fire in the bud, and reducing the false alarm rate of fire early warning.

An electronic apparatus including a display module and a touch panel is provided. The display module has at least one first connector. The touch panel is disposed on the display module and has a second connector, in which the second connector is plugged into the corresponding first connector to make the touch panel assembled onto and electrically connected to the display module.

A platform floating on the sea surface and with the floating-sinking mechanism for avoiding huge wind and wave is composed of a platform body anchored to seabed via cables and such units under the platform body as floatage fixed unit, floatage adjustable unit and power system for controlling the floating or sinking of platform.

The invention discloses a method and a device for controlling battery charging and discharging current. The method and the device are used for solving the problem that the charging and discharging current of a battery cannot be effectively controlled in the prior art. The method comprises the following steps that after a mixed energy storage system is electrified, the charge state, the health state and the open circuit voltage of a battery in the mixed energy storage system and the work current of the mixed energy storage system are determined; the internal resistance of the battery is determined according to the charge state and the health state of the battery and the work current of the mixed energy storage system; according to the determined open circuit voltage and the internal resistance of the battery as well as the preset expected battery charging current and the expected battery discharging current, the voltage upper limit value and the voltage lower limit value of the battery are determined; a two-way DC-DC (direct current to direct current) converter is used for controlling the charging and discharging current of the battery according to the voltage upper limit value and the voltage lower limit value, so that the charging current of the battery is not higher than the expected battery charging current, and in addition, the discharging current is not higher than the expected battery discharging current.

The invention discloses an electric internal clamp for a pipeline. The electric internal clamp for the pipeline comprises a rack, a motor, a driving device and butt working portions, wherein the butt working portions and the driving portion are respectively connected with the motor; a braking portion connected with the motor is also arranged. The internal clamp disclosed by the invention is divided into a front portion and a rear portion; mainly by means of three sets of identical coaxial line butt tensioning mechanisms driven by the motor, the center line of the internal clamp is superposed with that of the pipeline; the electric internal clamp for the pipeline is simple and reasonable in structure, low in duty ratio, convenient to adjust, small in inertia, reliable in braking, good in control system robustness and high in butt precision, and is capable of directly utilizing electric energy; compared with hydraulic and pneumatic internal clamps, the electric internal clamp for the pipeline has the advantages that the construction cost can be reduced, and the construction efficiency can be improved.

The invention relates to an eccentric ring hammer coal crusher in coal crushing equipment. The crusher comprises an enclosure, a feeding hole formed at the upper part of the enclosure, a rotor in the enclosure, a rotor counterattack plate, a screening device, a discharge hole formed at the lower part of the shell, a reclamation hole and a power device on the lateral surface of the enclosure, wherein the rotating shaft of the rotor is arranged on the enclosure; the rotor and the screening device form a crushing cavity; the rotor comprises a bracket seat arranged on the rotating shaft and a ring hammer eccentrically arranged on the bracket seat; and the installation center and the geometric center of the ring hammer form an eccentric distance. The ring hammer is eccentrically arranged, once metal impurities such as iron blocks or other hard impurities are mixed into the coal, the ring hammer eccentrically arranged on the bracket seat applies a striking force to the impurities and then rotates in the striking counterforce normal direction, so that destructive damage of the screening device formed by the ring hammer and a tooth stick is avoided, and the service life of the coal crusher is protected and prolonged.

The invention discloses an electronic device which comprises a display module and a touch panel. The display module is provided with at least one first connector. The touch panel is configured on the display module and is provided with a second connector. The second connector is connected onto the corresponding first connector in inserting mode so as to lead the touch panel to be assembled and electrically connected onto the display module.

The invention provides an intelligent anti-theft door lock and relates to the technical field of safety and protection. The intelligent anti-theft door lock is used for solving the problems that the existing anti-theft door lock is unattractive in appearance, poor in anti-theft performance and inconvenient to disassemble. The intelligent anti-theft door lock comprises a lock body, an integrated circuit board and a plurality of sensors; the lock body comprises a lock casing, a transmission rod and a motor; a lock cylinder is fixed at one end of the transmission rod; the motor drives the transmission rod to move; the integrated circuit board is provided with a remote controller, an inductor and an alarm controller; the remote controller is connected with a key; the inductor is electrically connected with the alarm controller; the alarm controller controls an alarm which is connected with the alarm controller to give alarms; the sensors are arranged on doors and windows. The intelligent anti-theft door lock has the advantages of being simple in structure and convenient to install, being capable of simultaneously protecting the windows and doors, being automatic in alarming and being capable of automatically switching on illuminating lamps, automatically dialing communication tools and accordingly performing on-site and remote monitoring, alarming and crime evidence collection in real time.

The embodiment of the invention discloses a pressure-yielding annular support and a support method, which relate to the technical field of geotechnical engineering and can effectively prevent the support body from being destroyed or at least reduce the degree of damage to the support body. It includes: a ring body, the ring body includes a plurality of sections of arc arches, the arc arches are connected from end to end through arc arch feet, and the two connected arc arch feet are butted with As for the pressure release member, a connecting piece is provided on the circumferential periphery of the junction between the pressure relief member and the arc arch foot, and the connection between the arc arch bottom foot and the pressure relief member is strengthened through the connection piece. The invention is suitable for support projects involving tunnels, roadways and the like in mining, petroleum, subway construction and the like.

The invention relates to the technical field of assisted reproduction, and discloses a cryoprotectant and an application thereof, a sperm refrigerating fluid and a preparation method of the sperm refrigerating fluid. The sperm refrigerating fluid comprises a cryoprotectant, a composition and a basic culture solution, wherein the cryoprotectant comprises 0.3 to 1.1 mg / L of paclitaxel, 16 to 22 g / Lof trehalose, 7 to 13 g / L of cane sugar and 80 to 250 mL / L of glycerinum; the composition comprises 12 to 26 mg / L of resveratrol, 0.2 to 1.9 mg / L of reduced glutathione, 436 to 775 mg / L of lecithin, 0.5 to 1.6 mg / L of cholesterol, 9 to 17 mg / L of ATP sodium salt, 11 to 28 mg / L of heparin, 93 to 299 mg / L of phosphatidylserine and 5 to 25 mg / L of coenzyme Q10. The sperm refrigerating fluid can reduce damage of sperms in low-temperature freezing and freezing resuscitation processes, improve vitality of the sperms after freezing resuscitation, prolong survival time of the sperms after freezing resuscitation, promote sperm capacitation and enhance penetrating fertilization capacity of the sperms to egg cells. Thus, the fertilization success rate and blastocyst formation rate of the ova are improved, and finally the effect of improving the pregnancy success rate of the in-vitro fertilization assisted reproduction technology is achieved.

The invention relates to a wind driven generator with a folding function. The wind driven generator comprises a support mechanism, a power generation mechanism arranged on the support mechanism, and a drive mechanism arranged on the power generation mechanism. The support mechanism comprises a base, a vertical rod vertically arranged on the base, and a lifting assembly arranged in the vertical rod. The power generation mechanism comprises a rotary shaft, a stator and a rotor. The drive mechanism comprises a support seat and a drive assembly arranged on the support seat. The drive assembly comprises an adjusting unit and blades. The adjusting unit comprises a first motor, a lead screw and a loop bar. The wind driven generator with the folding function is a direct-drive type vertical-axis wind turbine, and the main design of the wind driven generator mainly aims at preventing catastrophic destruction to the wind driven generator due to direct impact of ultra-large type wind. When the ultra-large type wind occurs, the structure of the wind driven generator can be adjusted, and direct contact between the drive unit where the blades are located and the strong wind is avoided.

The invention belongs to the technical field of molecular biology detection, and relates to a detection method for drug resistance sites, in particular to a method and a kit for multiple detection ofthe drug resistance sites of neisseria gonorrhoeae. A provided specific primer for the multiple detection of the drug resistance sites of the neisseria gonorrhoeae selects drug-resistance-related genes of two drug combinations (ceftriaxone and azithromycin) as target genes for detection, and includes penA, ponA, porB, mtrR, and 23S rRNA. Based on high resolution melting curve analysis technique, the DNA demulsification process is monitored in real time through high resolution melting of PCR products, the mutation condition of the genes is analyzed according to the characteristic change of a melting curve, and thus a basis is provided for determining the drug-resistant condition of the neisseria gonorrhoeae.

The invention relates to the field of assisted reproductive technology, and discloses a composition and application thereof, and a sperm refrigerating fluid and a preparation method thereof. The spermrefrigerating fluid comprises a basic culture solution, the composition, a cryoprotectant, human serum albumin and a bactericide, wherein the composition is prepared from resveratrol with a concentration of 12 to 26mg / L, reduced glutathione with a concentration of 0.2 to 1.9 mg / L , lecithin with a concentration of 436 to 775 mg / L, cholesterol with a concentration of 0.5 to 1.6 mg / L, an ATP sodiumsalt with a concentration of 9 to 17 mg / L, heparin with a concentration of 11 to 28 mg / L, phosphatidylserine with a concentration of 93 to 299 mg / L and coenzyme Q10with a concentration of 5 to 25 mg / L; and the cryoprotectant comprises paclitaxel with a concentration of 0.3 to 1.1 mg / L of, trehalose with a concentration of 16 to 22 g / L, cane sugar with a concentration of 7 to 13 g / L and glycerol with a concentration of 80 to 250 mL / L. The sperm refrigerating fluid can reduce damage of sperms in low-temperature refrigeration and in freezing recovery, improve vitality of the sperms after freezing recovery, prolong the survival time of the sperms after freezing recovery, promote sperm capacitation and enhance penetrating fertilization capacity of the sperms to egg cells; and thus, the fertilization success rate and blastocyst formation rate of the ova are improved, and finally, the effect of improving the pregnancy success rate of an in-vitro fertilization assisted reproduction technologyis achieved.

This invention provides a location locking device of a breaker including: a dismountable operation piece, a drive restrict unit combining with the operation piece uniformly driving the breaker body to translate on the throat direction, a position display unit displaying the moving position of the breaker, a trigger unit for triggering with the position display unit, a position locking unit for locking the position of the drive restrict unit along the trigger action of the trigger unit and an unblock operation unit unblocking the position locking

The invention discloses a debris flow drainage and guide structure. The debris flow drainage and guide structure comprises a mountain body, a flow blocking mechanism arranged on the slope of the mountain body and a flow guide mechanism arranged at the bottom of the mountain body, wherein the flow blocking mechanism comprises at least two side walls perpendicular to the mountain body, and the sidewalls are anchored to the mountain body; and a plurality of inwards-concave energy dissipation grooves are transversely formed between the adjacent side walls. According to the debris flow drainage and guide structure, debris flow is blocked through the flow blocking mechanism, so that the potential energy of the sliding down of the debris flow is reduced, and the purpose of reducing the flow speed of the debris flow is achieved; then the debris flow sliding down from the flow blocking mechanism is guided to the designated positions on the two horizontal sides through the flow guide mechanism,and thus the destructive damage of the debris flow to building facilities or engineering facilities below the mountain body is avoided; and the energy dissipation grooves, blocking piles and blockingframes are adopted, the debris flow is better blocked under the triple measures, the potential energy and speed of the sliding down of the debris flow are reduced to the maximum extent, and the destructive damage of the debris flow to the building facilities and the engineering facilities below the mountain body is avoided.

The invention discloses an underground electric control water plugging production increasing switching device, and relates to the technical field of oil field underground tools. An upper connector, anouter barrel, a lower connector, a center pipe, a power module, a motor and a valve mechanism are included. The end, connected with the outer barrel, of the lower connector is provided with a gear groove. A combined shaft hole is formed in the groove bottom of the gear groove. The gear groove is internally provided with a gear. The center line of the gear is perpendicular to the center line of the outer barrel. The center of one side of the gear is provided with a shaft end in a protruding manner. The shaft end is inserted in the combined shaft hole. A wrench hole in which a six-ridge wrenchis inserted is formed in the center of the other side of the gear. A tooth disc engaged with the gear is machined at the lower end of the outer barrel. The combined shaft hole at least comprises two shaft holes in which the shaft end is inserted, the shaft holes are arranged along the straight line at equal intervals, and every two adjacent shaft holes are overlapped. Through the underground electric control water plugging production increasing switching device, an electric water plugging tool can be directly maintained in the well site and does not need to be transported back to a workshop, and the construction efficiency is greatly improved.

The invention discloses a self-generated type steam protection and fire extinguishing process. The process comprises the following steps that after the condition that a reaction cavity is on fire is discovered through a remote monitoring system, the operation of an anti-explosion electromagnetic valve is controlled through an upper computer system and a PLC control system in a remote operation mode; the water source is sprayed to an inner partition plate of the reaction cavity in a water mist mode through an atomizing nozzle in the reaction cavity; since a high-temperature oil gas is in the reaction cavity, the water mist can be instantly evaporated into steam, and the temperature of a combustible gas in the whole reaction cavity can be reduced by the steam and the concentration of the combustible gas and oxygen can be diluted; the spraying water amount can be controlled through the detection of oxygen content and temperature in the reaction cavity, meanwhile, the upper computer systemand the PLC system can carry out linkage control on the spraying water amount according to the oxygen content and send out alarm information; and the whole control system supplies power in an uninterruptible power supply and the continuous use can be met under the emergency situation of the field. The process has the advantages that the structure is simple, temeprature can be rapidly reduced forextinguishing fire, and fire caused by the ignition of an high-temperature flue gas in an indirect heating process of industrial and dangerous waste can be effectively extinguished.

The invention discloses an underground electric control water plugging production increasing switching device, and relates to the technical field of oil field underground tools. An upper connector, anouter barrel, a lower connector, a center pipe, a power module, a motor and a valve mechanism are included. The end, connected with the outer barrel, of the lower connector is provided with a gear groove. A combined shaft hole is formed in the groove bottom of the gear groove. The gear groove is internally provided with a gear. The center line of the gear is perpendicular to the center line of the outer barrel. The center of one side of the gear is provided with a shaft end in a protruding manner. The shaft end is inserted in the combined shaft hole. A wrench hole in which a six-ridge wrenchis inserted is formed in the center of the other side of the gear. A tooth disc engaged with the gear is machined at the lower end of the outer barrel. The combined shaft hole at least comprises two shaft holes in which the shaft end is inserted, the shaft holes are arranged along the straight line at equal intervals, and every two adjacent shaft holes are overlapped. Through the underground electric control water plugging production increasing switching device, an electric water plugging tool can be directly maintained in the well site and does not need to be transported back to a workshop, and the construction efficiency is greatly improved.

The invention discloses an energy automatic training method and system for an accelerator. The discharge ion current value is calculated through real-time measurement of a high voltage partial currentvalue, an acceleration tube current value, a total load current value and other signals. The value and an accelerator vacuum value determine whether an energy boost condition is met. After the condition is met and an energy retention time is maintained, automatic increase of an energy training step is carried out until the training reaches the end of energy and maintains a period of time in the energy period and an automatic energy training process is completed. The system comprises a parameter setting module, a boost module, a signal measurement module, a process judgment module, a fault detection alarm module and an energy retention module. According to the invention, the energy training of the accelerator can be carried out more orderly, which is beneficial to the protection of equipment and devices during the energy training process and prevents equipment from destructive damage caused by impact caused by human misoperations.

A platform floating on the sea surface and with the floating-sinking mechanism for avoiding huge wind and wave is composed of a platform body anchored to seabed via cables and such units under the platform body as floatage fixed unit, floatage adjustable unit and power system for controlling the floating or sinking of platform.

The invention relates to a bulletproof roof top plate capable of effectively preventing cannonballs from penetrating through the roof of a sentry post and a barrack to directly explode and a manufacturing method, one or more layers of aramid fiber III weaving cloth are coated and cured by high-strength, high-toughness and high-hardness water-based resin powder to form a bulletproof plate, and a high-hardness, high-toughness and high-elastic plate is compounded on one side of the bulletproof plate. The bulletproof roof has the advantages that through the design of the bulletproof roof top plate, shell top-penetrating explosion is changed into shell top-hitting rebound explosion, then a sentry post and a barrack are prevented from being destructively damaged, and through the design of the bulletproof plate in the bulletproof roof top plate, the situation that elastic pieces enter a room after the high-hardness, high-toughness and high-elastic plate is damaged is avoided.

The invention discloses a self-generated steam protection and fire extinguishing technology, which includes: through the remote monitoring system, after the fire in the reaction chamber is found, through the remote operation of the upper computer system and the PLC control system, the action of the explosion-proof electromagnetic valve is controlled, and the water source passes through the reaction chamber. The atomizing nozzle is sprayed onto the partition in the reaction chamber in the form of water mist. Because the reaction chamber contains high-temperature oil and gas, the water mist will evaporate instantly into steam, and the steam will reduce the temperature of the combustible gas in the entire reaction chamber. At the same time, the dilution can The concentration of gas and oxygen can be controlled by detecting the oxygen content and temperature in the reaction chamber to control the amount of spraying water. At the same time, the host computer system and the PLC system can control the amount of spraying water according to the oxygen content and issue an alarm message. The entire control system is powered Provides uninterruptible power supply for continuous use in emergency situations on site. The structure of the present invention has the advantages of simple structure, quick cooling and fire extinguishing, and can effectively extinguish fires caused by ignition of industrial and hazardous wastes by high-temperature flue gas during indirect heating.

The invention discloses a solar thermal insulation water tank with double steam exhaust functions for low temperature environment, which comprises a water tank shell, a water tank liner, a thermal insulation layer, a water inlet pipe, a water outlet pipe, a sewage pipe, and a heat collection pipe. There is an insulation layer between the water tank shell and the water tank liner. The end of the water tank shell is provided with a water inlet pipe and an outlet pipe that penetrates the insulation layer and communicates with the water tank liner. The bottom of the water tank shell is provided with a penetrating insulation layer and a water tank. The sewage pipe and the heat collecting pipe connected to the inner tank, among them, the steam exhaust device and the auxiliary steam exhaust device penetrating the water tank shell and the water tank inner tank are installed in the insulation layer on the top of the water tank. The structure of the device is stable and reasonable, and the installation of the steam exhaust pipe Reliable and stable, it can prevent the exhaust pipe from rusting, increase the service life of the exhaust pipe, reduce the cost of use, increase the insulation effect of the incubator, and reduce the loss of hot water heat. The set control valve can ensure the pressure balance in the water tank. Prevent the water tank from being destructively damaged by atmospheric pressure.

The invention discloses a connecting device of a hanging board in a deep foundation pit supporting structure, and belongs to the field of deep foundation pit supporting structures. The connecting device of the hanging board in the deep foundation pit supporting structure is compact in overall structure, the hanging board can be fixed effectively through a supporting mechanism in the using process,a lateral moving mechanism is driven by a transmission mechanism to move, therefore a lateral fitting mechanism is driven to fit the external left and right environments mutually, and the connectingdevice can be fixed well; in the using process, the transmission mechanism can drive a locating mechanism to move, therefore the connecting device is fixed in a pit better and can be effectively fixedwell, the connecting device is firm in connection, and circulation of freezing and thawing of pile spacing in the process of spraying concrete, large-area layering agglomeration and shedding, devastating damage and the problems that vertical surfaces forming pile spacing are quite irregular, and space and positions of expanded grooves are not occupied can be avoided; the cost is low, constructionand installing are convenient, and the construction period is shortened.

The invention discloses a disassembly mechanism of a matching component, which includes a support, a connecting plate, a stud and several pulling heads; Fitting; one end of the stud is sleeved with a nut, and the other end is fixedly connected to one end of the connecting plate through the stud hole opened on the upper layer of the support; one end of the puller is fixedly connected to the connecting plate, and the other end is connected to the parts to be disassembled. The operation is simple and convenient, does not occupy existing processing equipment resources, avoids scrapping damage to mating components by lathe processing, takes out parts to be disassembled without damage, effectively utilizes available resources, saves manufacturing costs for reprocessing, and shortens supporting cycle.

The invention relates to a method for detecting blade cracking of a wind generating set. When a blade cracks, the aerodynamic characteristics of the blade can change, the current of a variable pitch motor corresponding to the blade can increase correspondingly under the same external condition, and the change of the current of the variable pitch motor has a certain regular characteristic. According to the method, the current change of the variable pitch motor is analyzed and processed, and the current of the fan variable pitch motor , the blade azimuth angle, the hub rotating speed and the wind speed are analyzed, so that the influence of blade installation and the fault of the variable pitch motor on the current of the variable pitch motor is eliminated, the accuracy rate is high, whether the fan blade cracks or not can be pre-judged, and the state of the fan blade can be monitored in time, destructive damage to the blade is prevented, timely maintenance of the blade is facilitated, the maintenance cost of the fan is reduced, and the power generation loss is reduced.

The invention provides a highway energy dissipation speed reducer, speed reducing device and speed reducing system. The highway energy dissipation speed reducer comprises a pushing end head, a mounting section, a diffusion section, a reciprocating part and a high-pressure part, wherein the pushing end head can be installed in a front portion in a back and forth mode, and a rear portion is used forlimiting the pushing end head; the diffusion section communicates with the rear portion of the mounting section, and the inner diameter of the diffusion section is gradually expanded; the reciprocating part comprises a reciprocating section, a first porous plate, a second porous plate, a first elastic piece, a plurality of downstream reciprocating units and a plurality of backflow reciprocating units, a plurality of downstream holes are formed in a main body region of the first porous plate, and a plurality of backflow holes are formed in a peripheral region of the first porous plate, the second porous plate is the same as the structure of the first porous plate, the downstream reciprocating units comprise downstream blocking beads and downstream elastic pieces, the backflow reciprocatingunits comprise backflow blocking beads and backflow elastic pieces; and the high-pressure part comprises a high-pressure section, a separation pressing plate which can be movably arranged at the front portion of the high-pressure section in a reciprocating manner, and inert high-pressure gas filling high-pressure cavity defined by the high-pressure section and the separation pressing plate.

The invention discloses a method and a device for controlling battery charging and discharging current. The method and the device are used for solving the problem that the charging and discharging current of a battery cannot be effectively controlled in the prior art. The method comprises the following steps that after a mixed energy storage system is electrified, the charge state, the health state and the open circuit voltage of a battery in the mixed energy storage system and the work current of the mixed energy storage system are determined; the internal resistance of the battery is determined according to the charge state and the health state of the battery and the work current of the mixed energy storage system; according to the determined open circuit voltage and the internal resistance of the battery as well as the preset expected battery charging current and the expected battery discharging current, the voltage upper limit value and the voltage lower limit value of the battery are determined; a two-way DC-DC (direct current to direct current) converter is used for controlling the charging and discharging current of the battery according to the voltage upper limit value and the voltage lower limit value, so that the charging current of the battery is not higher than the expected battery charging current, and in addition, the discharging current is not higher than the expected battery discharging current.