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 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 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 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 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.

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.