25 results about "Rapid rise" patented technology

The invention discloses a phase change integrated heat dissipation transformation method for improving the short-time overload capacity of ANPC topology. In order to solve the problems of high cost and poor compatibility caused by the fact that the overload capacity of the existing ANPC topology needs to depend on additional static redundancy capacity and additional devices, a phase change material integrated device is selected to be combined with a conventional device according to the loss characteristics of the devices at different positions. By utilizing the isothermal heat absorption characteristic of the phase change material at a specific temperature, the rapid rise of the junction temperature of the high-loss device during overload operation is effectively inhibited, the junction temperature ranges of the high-loss device and the low-loss device tend to be consistent, and the short-time overload operation capability of the system is remarkably improved.

The utility model discloses a drive circuit with fast rise time, which relates to the field of repetition frequency high-voltage pulse power supplies, and comprises a control signal unit used for transmitting a signal to a primary side of an isolation transformer, and the isolation transformer carries out electricity-magnetism-electricity conversion on a control signal and outputs the control signal to a drive unit; the beneficial effects of the utility model are that the energy storage capacitors C3 and C4 are arranged, so that an energy release path is shortened, and a faster opening signal rising edge can be generated; the triode Q1 is arranged to delay conduction, so that the leakage inductance limitation of the isolation transformer can be relieved, and the conduction or turn-off speed of the switch is improved; a resistance adjusting method is adopted, and the resistance value of R2 in the driving circuit is changed, so that the dead zone time is controllably adjusted; when the discharge switch tube Sdi is switched off, even if interference pulses exist, the MOS tube M2 can firmly clamp the grid electrode of the discharge switch tube Sdi at-10V, and the anti-electromagnetic interference performance of the drive circuit is improved.

The utility model discloses a stamping machine structure simulating manual stamping, which is provided with a guide slide block, a guide slide rail and a reset spring, during stamping, the guide slide rail and a stamping piece move downwards along the guide slide block, the reset spring shrinks, and after the operation is finished, the guide slide rail and the stamping piece move downwards along the guide slide block. Elastic stress generated when the reset spring recovers to the original shape can pull the guide sliding rail and the seal piece to rapidly rise, and the process simulates a stamp smashing mode in manual stamping, namely, the stamp is smashed to paper and rapidly separated from the paper face; according to existing automatic stamping equipment, a stamping piece needs to be driven to move upwards after stamping; according to the metal seal stamping device, a mode of simulating stamping is adopted, the problem that due to the fact that contact time is prolonged, stamp-pad ink is too much and blurring is caused is solved through higher impact force and rapid rebounding of the reset spring, and the mark definition after a metal seal is stamped is improved.

This invention relates to the field of heat pump control technology, and discloses a method, device, and air source heat pump unit system for controlling an enthalpy-increasing electronic expansion valve. The method includes: determining whether the enthalpy-increasing electronic expansion valve needs to be opened based on the operating status of the heat pump unit; when the enthalpy-increasing electronic expansion valve needs to be opened, detecting the ambient temperature and outlet water temperature of the heat pump unit's main equipment, and determining the initial opening degree of the enthalpy-increasing electronic expansion valve based on the ambient temperature and outlet water temperature; controlling the enthalpy-increasing electronic expansion valve to open at the initial opening degree and maintaining it for a preset time until the main equipment operates stably, then entering an adjustment mode to adjust the opening degree of the enthalpy-increasing electronic expansion valve according to the unit's operating status; if a preset special situation is detected during the maintenance period, entering the adjustment mode in advance to adjust the opening degree of the enthalpy-increasing electronic expansion valve. This invention can improve the response speed of the enthalpy-increasing electronic expansion valve and avoid the problems of excessively rapid rise in exhaust temperature or insufficient exhaust superheat of the heat pump unit.

The invention relates to the technical field of computers, and provides a rapid load adjustment decision method and system based on head water level prediction, and the method comprises the steps: collecting the head water level data and the current total load of a power system; determining a water level change mode based on the head water level change trend and the head water level change rate; the water level change mode comprises a rapid rising mode and a rapid falling mode; if the water level change mode is in a rapid rising mode, determining a non-critical area based on load information of each area associated with the power system, and executing a load grading reduction adjustment decision based on the non-critical area, the head water level change rate and the current total load; and if the water level change mode is in a rapid drop mode, a transferable load area and a standby power supply are obtained, and a load supplement adjustment decision is executed based on the head water level change rate, the current total load, the transferable load area and the standby power supply capacity of the standby power supply. According to the invention, the operation stability and economy of the power system are improved.

The present invention belongs to the technical field of elevators, and specifically relates to a safety clamp and an elevator. The safety clamp includes a clamp body and a sliding wedge installed on the clamp body, and also includes a lifting plate, which lifts the sliding wedge through a linkage pin; the lifting plate has a travel groove extending in the direction of lifting the sliding wedge, and the linkage pin can move along the travel groove. In the safety clamp and elevator of the present invention, when the lifting mechanism is excessively or prematurely limited within a certain amount, the sliding wedge and the linkage pin can still quickly rise a certain stroke in the travel groove of the lifting plate, so that the sliding wedge reaches the designed stroke. In addition, when the difference in the travel of the sliding wedges of the left and right safety clamps of the elevator is too large or the asynchronous movement is within a certain amount, the sliding wedge and the linkage pin can quickly rise a certain stroke in the travel groove of the lifting plate, reducing the probability of the two safety clamps being out of sync.

To provide a fully-continuous synthesis method of glyphosate.SOLUTION: In the present invention, high-purity glyphosate is prepared by using a fully-continuous system in which a feed pump, a plurality of micromixers, a plurality of microchannel reactors, a dynamic rotary reactor, a buffer tank, a back pressure valve, a continuous reaction-kettle-type reactor, and a continuous crystallizer are sequentially connected, in which glycine is used as a raw material.EFFECT: According to the present invention, stable fully-continuous industrial production is achieved, no external intervention is required during the process, the efficiency of time and space is high, the number of operators and the labor intensity are greatly reduced, the production cost is greatly reduced, complicated operations in the conventional reaction-vessel process, a rapid rise of temperature in the kettle and the risk of material ejection are avoided, production safety is improved, the quality of glyphosate products is ensured, the operation of the apparatus is stable, the reaction time is short, the reaction yield is high, and the quality of the product is stable.SELECTED DRAWING: Figure 1

The utility model particularly relates to a pipeline pup joint structure for reducing the pressure of a shortening production system, which comprises a quenching stirrer, a kneading stirrer and a small kneading stirrer, a port A1, a port A2, a port A3 and a port A4 of the quenching stirrer are sequentially connected through a plurality of pup joint pipes, and a port A4 of the quenching stirrer is connected with a port B1 of the kneading stirrer through a plurality of pup joint pipes. A port B1, a port B2, a port B3 and a port B4 of the quenching stirrer are sequentially connected through a plurality of short connecting pipes, and a port B4 of the kneading stirrer is connected with the small kneading stirrer through a plurality of short connecting pipes; the short connecting pipes are connected end to end, fixedly connected through the connector device and unlocked through the unlocking device. According to the utility model, the length of the pipeline is shortened through the short connecting pipe, and the number of the right-angle elbows and the number of the obtuse-angle elbows are reduced, so that the rapid rise of pressure in the pipeline is slowed down, re-production after shutdown and pressure reduction is avoided, the production efficiency is improved, and the vacancy time of a production system is reduced.

The invention discloses a method for producing a composite phase change material by adopting 3D printing. The method comprises the following steps: S1, preparing an outer layer material; s2, preparing an inner layer material; and S3, fusion 3D printing is carried out. The two composite phase change materials of the inner layer and the outer layer are combined to form a combined structure of a strip-shaped pod structure and a capsule column, the heat dissipation performance is improved through the outer layer material, the heat dissipation speed is balanced through the supporting performance and the auxiliary heat dissipation effect of the inner layer material, the instantaneous high heat load is absorbed, sudden temperature rise is avoided, the service life is prolonged, the overall structure is stable, and the cost is low. And the balance between the maximum heat dissipation and the deformation risk is realized.

The application discloses a phase change integrated heat dissipation transformation method for improving short-time overload capacity of an ANPC topology. In view of the problem that the existing ANPC topology needs to rely on additional static redundant capacity and extra devices to improve overload capacity, resulting in high cost and poor compatibility, the application selects a phase change material integrated device and a conventional device according to the loss characteristics of the devices at different positions. By utilizing the isothermal heat absorption characteristics of the phase change material at a specific temperature, the rapid rise of the junction temperature of the high-loss device during the overload operation is effectively inhibited, the junction temperature range of the high-loss device and the low-loss device is consistent, and the short-time overload operation capacity of the system is significantly improved.

The application relates to a kind of silica-polyurethane composite phase change microcapsules for water-based drilling fluid and a preparation method and application thereof, and belongs to the technical field of oilfield drilling fluid.The application successfully obtains a kind of phase change microcapsule with ternary nitrate / graphene composite phase change material as core material and silica-polyurethane composite material as shell material by sol-gel interface polymerization method.The phase change microcapsule of the application circulates to the bottom of well high-temperature stratum along with drilling fluid, when the temperature of system reaches its phase change temperature, the core material generates phase change endothermic behavior from solid to liquid, avoids the rapid rise of drilling fluid temperature, thereby improving the high-temperature stability of drilling fluid.When drilling fluid circulates into upper low-temperature stratum, microcapsule generates phase change exothermic behavior, realizes multiple cycle temperature control effect.

The utility model relates to the technical field of methanol recovery, and discloses a methanol recovery system which comprises a box body, a support arranged at the bottom of the box body and a partition frame arranged in the box body, the partition frame divides the interior of the box body into a first recovery cavity, a second recovery cavity and a heating cavity, the heating cavity is located below the first recovery cavity and the second recovery cavity, an air outlet pipe for communicating the heating cavity with the second recovery cavity is installed on the separation frame, and a condensation plate is arranged at the top of the second recovery cavity; a liquid collecting structure is further arranged in the middle of the second recycling cavity; through the arrangement of the liquid collecting structure, not only can the rapid rising of gas be promoted, the premature scattering of the gas be avoided, the rapid condensation of the gas is facilitated, but also water drops flowing down from the condensation plate and the inner wall of the box body can be received and collected, so that the recovery effect of methanol is greatly improved, and the efficient recovery of methanol is facilitated.

The present application belongs to the technical field of abnormal detection of expansion tank, and relates to an abnormal detection method of expansion tank, which checks the state identification channel of the expansion tank in time sequence, determines whether the state of the expansion tank is an operation and maintenance state, identifies that the pressure of the expansion tank rapidly rises and identifies a water replenishment state if in the operation and maintenance state, finds the maximum value of pressure again, identifies the abnormal characteristics that the pressure oscillates, and identifies abnormal decrease of the pressure of the expansion tank, so that the abnormality that the pressure of the expansion tank is unstable in the later period and cannot maintain constant pressure can be identified. The method mainly identifies the abnormality of the expansion tank through a data analysis method, avoids the operation and maintenance personnel from considering that it is a system water shortage problem, and only through the water replenishment method, although the pressure has a certain recovery in a short time, the abnormal state will return again after a longer time, the pressure abnormality of the system is not fundamentally solved, and the unit will continue to report faults in a short time.

The invention discloses a numerical simulation characterization method for flooding dominant channels of a thin-layer sandstone reservoir, which belongs to the field of numerical simulation of reservoir engineering, and adopts a non-structure + angular point mixed grid design method for flooding dominant channels of different water-containing stages of the reservoir, and optimizes the sizes, directions and proportions of different types of grids. The method solves the problem that the water content of a production well is rapidly increased due to directional water channeling which is difficult to fit by a common model, can effectively characterize the geometrical characteristics of a water-flooded channel in any form in an oil reservoir, simulates the characteristics of fluid channeling along the water-flooded channel, accurately reflects the phenomenon that the water content of the oil production well is rapidly increased, and has a good application prospect. The simulation water content coincidence rate is improved by 15% compared with that of a common model, and a reliable remaining oil distribution result is obtained.

The present invention relates to the technical field of high-speed, high-precision CNC machine tools, and discloses a method for designing a fractal heat conduction channel for a machine tool spindle. By simulating and experimentally comparing the maximum temperature and overall temperature distribution of the fractal heat conduction channel with those of a straight heat conduction channel and a structure without a heat conduction channel, it was found that the method of the present invention makes the temperature field distribution in the spindle region more uniform and reduces the maximum temperature. The method is capable of rapidly dissipating the heat generated by the machine tool's main heat source under steady-state conditions, wherein the temperature stabilizes after an initial rapid rise, indicating that the test model has reached thermal equilibrium. Using 95% of the maximum temperature as the criterion, the fractal heat conduction path model and the straight heat conduction path model require approximately 33 minutes and 51 minutes, respectively, to reach steady state. Under the same experimental conditions, the fractal heat conduction path model achieves thermal equilibrium more quickly. Compared with the straight heat conduction path model, the temperature measurement points of the fractal heat conduction path model have lower temperatures at the same locations.

To provide a connector capable of efficiently absorbing heat from a heat generation source and suppressing a rapid rise in temperature.SOLUTION: A connector 1 includes: a connection terminal 20 that is electrically connected to a mating terminal and has one of a female screw part and a male screw part (in the present embodiment, a female screw part 22); a wiring material terminal 30 that is provided at a terminal of a conductive wiring material W and has a hole part 32h that penetrates along an axial direction X of the connection terminal 20; and a heat storage material 40 that has the other of the female screw part and the male screw part (in the present embodiment, a male screw part 42). The connection terminal 20, the wiring material terminal 30, and the heat storage material 40 are fastened while sandwiching the wiring material terminal 30 between the connection terminal 20 and the heat storage material 40 by inserting the male screw part 42 into the hole part 32h along the axial direction X and screwing it into the female screw part 22 in a state where the wiring material terminal 30 is located between the connection terminal 20 and the heat storage material 40 with respect to the axial direction X.SELECTED DRAWING: Figure 3

The invention relates to the technical field of mountain torrent disaster risk analysis, in particular to a mountain torrent evolution and risk assessment method and system based on inducement characteristic changes. The scheme comprises the following steps: determining a key monitoring index according to a preset mountain torrent main inducement library; performing dynamic analysis according to the key monitoring index to form a volatility index, a cliff falling index and a rapid rising index; performing dynamic risk according to the fluctuation index, the cliff falling index and the rapid rising index to form a first influence factor, a second influence factor and a third influence factor; judging whether obvious change exists or not, and if so, setting a jump type influence factor; a pre-estimated natural attenuation disaster risk curve is formed, and the mountain torrent disaster probability change of each point location is automatically updated in combination with the jump influence factors; and performing plane display according to the mountain torrent disaster probability change of each point location. According to the scheme, a curve or a dynamic graph of mountain torrent evolution is formed by paying attention to the change condition of main inducements.

The present application relates to the field of ecological revetment in the field of hydraulic engineering, and particularly relates to a riprapping ecological revetment system suitable for water level drawdown. The system comprises an ecological soil base layer, a filter layer, a riprapping revetment, a simulated wood pile scour protection belt and a planting groove; the ecological soil base layer has a compaction degree of greater than or equal to 93%, providing a dense support; the filter layer ensures smooth seepage and prevents soil loss; the riprapping revetment is formed by stacking large-diameter block stones according to gradation, forming a rigid skeleton resistant to scour; the planting groove is fixed in the riprapping structure, providing space for vegetation and anchoring the surface riprapping. The present application forms a closed-loop protection system through the cooperation of the five, effectively solving the problems of traditional riprapping revetment, such as easy scouring and instability during water level drawdown, and high maintenance cost, and has the advantages of scour resistance, ecology and universality, and is suitable for water level rapid rise and fall scenes such as regulating and storing lakes, reservoir drawdown zones, tidal river shorelines and the like.

The invention relates to the technical field of physical simulation, monitoring and early warning of karst geological disasters, in particular to a quantitative description device capable of being used for researching karst collapse and a use method thereof, and the quantitative description device comprises a main body model, a karst pipeline simulation system, a hydrological process control system and a multi-parameter data monitoring and acquisition system. Through cooperative operation of the systems, the physical process of'differential pressure induced collapse 'induced by rapid rising and falling of the underground water level can be simulated, and quantitative data acquisition and fusion analysis of the whole process of intra-cavity differential pressure, soil internal stress and strain and earth surface deformation are realized by means of an integrated multi-dimensional synchronous monitoring network; the dynamic mechanism and the key threshold value of differential pressure collapse are disclosed, and a reliable experimental platform and a quantitative basis are provided for mechanism research, risk assessment and early warning prevention and control of karst collapse.

This invention proposes a conveyor mechanism for processing ultra-wide coated fabrics and its control method. The conveyor mechanism comprises a roller assembly consisting of multiple rollers. Along the conveying direction, the conveyor mechanism is divided into a feed stage, a first-stage lifting stage, an intermediate relaxation stage, an intermediate and later-stage under-relaxation stage, and a final-stage stress release stage. The roller heights in each stage vary according to a piecewise function curve, including a rapid rise, a horizontal stage, a gentle rise, and a slow descent. The roller assembly parameters are configured as follows: during the feed stage, the first-stage roller is aligned with the upstream material feed direction; the final-stage roller has the same diameter as the first-stage roller; the first-stage and secondary rollers are actively driven, with the secondary roller rotating at 0.9 times the speed of the first-stage roller. The intermediate-stage rollers are alternately driven with active and passive drives. The control method includes staged stress control, dynamic parameter adaptation, and forced convection heat transfer control. This conveyor mechanism and its control method can effectively improve coating processing quality, enhance adaptability, optimize temperature control, and increase production efficiency.

The embodiment of the invention provides an inverter heat dissipation mechanism control method and device, equipment, a medium and a product, and relates to the field of photovoltaic power generation, the method accurately characterizes the overall thermal state of an inverter through the coupling temperature formed by multi-region temperature fitting, and meanwhile, the temperature change rate is calculated by combining the coupling temperature of the front and back sampling periods, so that the heat dissipation mechanism of the inverter is obtained. The dynamic change trend of the temperature is captured, the thermal inertia compensation coefficient is calculated according to the temperature change rate, the reference duty ratio is corrected based on the compensation coefficient, the compensation intensity is increased along with the increase of the temperature rise rate during temperature rise so as to cope with the rapidly rising thermal load in advance, and the compensation intensity is reduced along with the increase of the temperature reduction rate during temperature reduction so as to cope with the rapidly rising thermal load in advance. Temperature rebound caused by premature speed reduction due to thermal inertia is avoided, the control logic and the physical thermal response characteristics of fast temperature rise and slow temperature reduction of the inverter are accurately coordinated, the contradiction of misalignment of the control logic and the dynamic thermal load characteristics in the prior art is solved, and the control efficiency of a heat dissipation mechanism of the inverter is improved.

The utility model discloses a mortar consistency detection device for environment-friendly mortar detection, which comprises a base, the top of the base is provided with a measuring assembly, and the measuring assembly is used for detecting the mortar consistency; a storage container is placed on one side of the top of the base; a striking mechanism located below the storage container is arranged in the base; a swing mechanism located on one side of the beating mechanism is arranged on the top of the base. An adjusting assembly is arranged at the bottom of the beating mechanism. According to the utility model, by utilizing the swinging mechanism, the striking mechanism can move downwards and be compressed, and after the swinging mechanism crosses, the striking mechanism quickly ascends under the action of elasticity to strike the storage container, so that the storage container vibrates; bubbles in the storage container are effectively eliminated, the upper surface of mortar in the storage container becomes flat, and the mortar consistency detection precision and effect are improved.

The invention discloses a construction method for a flood-control wide-top sub-dam of a fine-grain tailing reservoir, which belongs to the technical field of mine engineering and comprises the following steps of: laying and fixing geotechnical model bags, and building model bag unit bodies layer by layer to a preset dam height to form a film bag dam body; a film bag dam body is laid in the preset direction to construct a transverse embankment, it is guaranteed that a distance is reserved between the embankment foot of the transverse embankment and the beach top, and the distance is not smaller than the safe dry beach length required by the tailing reservoir; the transverse dike extends towards the mountain bodies on the two sides, notches are reserved in the connecting positions of the transverse dike and the mountain bodies on the two sides to form overflow ports, and the overflow ports are as high as the transverse dike. By optimizing the arrangement mode of the overflow port, the overflow port form which is easy to block is reserved for solving the problem that the water level is easy to quickly rise due to poor permeability of fine tailings in the later period; and meanwhile, the overall structural strength of the transverse dike is guaranteed, and structural instability of the transverse dike under the condition that the water level changes greatly is avoided.

The application relates to the computer technical field and provides a load rapid adjustment decision method and system based on a head water level prediction, which comprises the following steps: collecting head water level data and current total load of a power system; determining a water level change mode based on a head water level change trend and a head water level change rate; the water level change mode comprises a rapid rise mode and a rapid drop mode; if the water level change mode is in the rapid rise mode, determining a non-key region based on load information of each region associated with the power system, and performing a load hierarchical reduction adjustment decision based on the non-key region, the head water level change rate and the current total load; if the water level change mode is in the rapid drop mode, obtaining a transferable load region and a standby power supply, and performing a load supplement adjustment decision based on the head water level change rate, the current total load, the transferable load region and a standby power supply capacity of the standby power supply. The application improves the stability and economy of power system operation.

The present invention relates to the technical field of water pollution monitoring and sampling, and specifically to a water pollution monitoring and sampling device and a method of use, comprising a float and a driving assembly, wherein the float is a ship-shaped structure, the driving assembly is installed on the float, and the driving assembly is used to drive the float to move on the water surface. The device also comprises a sampling assembly, a positioning assembly and a floating assembly, wherein the sampling assembly comprises a sampling tank, which is detachably connected to the float, and the positioning assembly comprises a cable, an anchor and a winding mechanism, one end of the cable is mounted on the float through the winding mechanism, the cable passes through the kettle body and is slidably connected thereto, and the top of the anchor is fixedly connected to the other end of the cable. In order to facilitate use in bad weather, the present invention arranges the device in advance in the target water area when the weather is good, and submerges the sampling tank by the rapid rise of the water level during heavy rainfall, so that water flows into the sampling tank, thereby completing the sampling work, avoiding the safety risks posed to workers when performing water pollution monitoring and sampling in bad weather.