36results about How to "Adapt to complex working conditions" patented technology

The invention provides a glass kiln flue gas dust removal and denitration integrated process. According to the process, a high-temperature dust removal device and a denitration reaction device do not need to be independently arranged, and dust removal and denitration are organically combined in one device; flue gas is subjected to the dust removal and then is subjected to the denitration at a high temperature so that dust and nitric oxide can be removed at the same time; a denitration process is carried out in a pure flue gas environment so that a catalyst is prevented from being poisoned and corroded and the service life of the catalyst is prolonged; and a denitration purification device does not need to be independently arranged so that the process is relatively simple. The invention provides a glass kiln flue gas dust removal and denitration integrated device; the dust removal and denitration catalyst is arranged in a dust removal chamber; and the device has a simple structure and is convenient to mount and replace. The dust removal and the denitration are organically combined in one device and the device is convenient to mount and replace; an SCR reactor device does not need to be independently arranged so that the process is relatively simple and the investment cost and the operation cost of the system are reduced; and the catalyst woks in the pure flue gas environment so that the catalyst is prevented from being poisoned and corroded, and the service life of the catalyst is prolonged.

The invention discloses an online synchronous identification method for the heavy truck air resistance composite coefficient and mass. An online identification model under the drive and neutral gear sliding work condition is established through a differential driving equation, and combined online identification of the air resistance composite coefficient and the whole truck mass is achieved through a recursion two-parameter least squares algorithm. The influence of the rolling resistance calculation error on the identification precision can be eliminated by selecting the differential driving equation. Synchronous online two-parameter identification has the characteristic of self-adaptation changeable air resistance, and the obtained mass identification result is not affected by the air resistance coefficient or the truck windward area error. The stable and reliable air resistance composite coefficient and truck mass can be obtained under different carrying modes and different masses and under wind speed changes and other various complex work condition environments.

The invention provides a control method for a power transmission system of a novel gas-electric hybrid washing and sweeping vehicle. The control method comprises a transition control method and a sweeping control method. The transition control method is used for switching between different transition working modes, and the different transition working modes include a pure electric mode driven by amain motor during no-load, a coordinated drive mode of the main motor and an ISG motor under on-load transportation, a separate drive mode of an engine under on-load transportation and a combined drive mode of the engine and the main motor under on-load transportation. The sweeping control method is used for switching between two different sweeping working modes, and the sweeping working modes include a pure electric drive mode and an extended-range drive mode. The power transmission system includes a power device, a transmission device and a working device and a traveling device, and the power device transmits power to the working device and the traveling device through the transmission device. The control method for the power transmission system of the novel gas-electric hybrid washingand sweeping vehicle has the advantages of simple and compact structure and convenient arrangement, and realizes the matching between the changed vehicle speed and the sanitation sweeping operation speed when the vehicle runs.

The invention discloses a vehicle security anti-collision control method based on TTC of rolling optimization parameters. A control vehicle acquires position information, speed information and acceleration information of a target vehicle via a vehicle-mounted sensor, inputs owns information to a computing module to acquire information such as a distance between the two vehicles, a relative speed of the two vehicles, and the acceleration of the control vehicle, and performs rolling optimization computation, and thus the parameters with relatively good performance and relatively strong robustness are achieved under the affect of a target function and a constraint condition, and the parameters are input into a two-order TTC safety anti-collision time model for computing and judging. Accordingto the method, the optimized performance indexes are acquired via the rolling optimization algorithm, and compared with unoptimized performance indexes, the performance indexes after rolling optimization are more accordant with the actual condition under the effect of the target function and the constraint condition, motion of the target vehicle at the next moment can be predicted, the control vehicle acts correspondingly, and thus collision is avoided; higher accuracy is achieved, and a TTC value at the current moment can be well computed.

A cyclically used insulating shield is composed a main body consisting of internal layer, insulating layer, external layer and fire-proof layers on said internal and external layers, and the connecting mechanisms for the connection between said shields. It has high insulating, water-proof, fire-proof and oil-resistant functions.

The invention discloses a device for monitoring the abrasion amount of a mill lining plate in real time. The device includes a monitoring assembly, an information interaction assembly and a control mechanism; the monitoring assembly is provided with a detection bolt, one end of the detection bolt penetrates through a mill cylinder body and the mill lining plate in sequence and is flush with the inner edge of the mill lining plate, and the other end of the detection bolt extends outside the mill cylinder body; and the inner part of the detection bolt is of a hollow structure, and a sensor probeis fixed to the hollow structure part through an insulating castable in a sealing mode. According to the device for monitoring the abrasion amount of the mill lining plate in real time, the abrasionamount of the mill lining plate can be effectively and accurately monitored in real time without stopping a mill, so that the effective utilization of the mill lining plate is improved, and the mill production efficiency is improved.

The invention discloses a shape-followed runner radiator based on sheet laminated connection and a preparing method of the shape-followed runner radiator. A runner radiator part model is designed andbuilt in three-dimensional model design software, slice software is guided in to cut and layer the prepared part model according to the appointed thickness, a code file needed by laser machining is generated, a laser cutting system is guided in for cutting so as to obtain metal sheets, the metal sheets are sequentially overlapped, accumulated and clamped layer by layer according to the shape-followed runner sequence, and interlayer containing vacuum pressure thermal diffusion welding is carried out; and a sheet laminating connecting technology is adopted for directly manufacturing the complexrunner radiator with a complex inner cavity, the whole part deformation amount is smaller after manufacturing and molding, the continuity of the inner cavity is excellent, the product performance coincidence is good, meanwhile, the long-period and high-cost die opening process is saved, further optimization design of the runner radiator is facilitated, a runner can be accurately attached to the surface of a complex curve face part, and the molding accuracy and the radiating performance are further improved.

A combined front suspension for an engineering vehicle driving cab comprises a plate spring (1), a plate spring support (3), a rotating base (4) and a spiral spring (2). The upper end of the plate spring (1) and that of the spiral spring (2) are coaxially hinged, the bottom end of the plate spring (1) is fixedly connected with the plate spring support (3) through a bolt, the plate spring support (3) and the rotating base (4) are hinged through bolts, and the rotating base (4) is fixed on a vehicle frame. The plate spring (1) only serves as a guide element and does not participate in energy transduction during little displacement on a sound pavement, and energy buffering is performed mainly by the spiral spring (2); under poor working conditions, when the suspension moves and triggers limiting, the plate spring (1) starts to function and cooperate with the spiral spring (2) to participate in kinetic energy buffering so as to adapt to complex working conditions.

The invention discloses a high-frequency response servo proportional valve position control method. The method is based on a proportional valve position control system, when a low-frequency signal isgiven, a displacement given signal is compared with a valve element displacement feedback signal to obtain position deviation, the position deviation is divided into three sections according to the position deviation range, and position PID controller parameter setting is carried out on each section of position deviation; at the moment, the input current of a proportional electromagnet is determined by the output value of a displacement following part; and when a high-frequency signal is given, the displacement following part does not work, and at the moment, the input current of the proportional electromagnet is determined by the output values of a speed following part, a feedforward part and a differential leading part. The method has the advantages of rapidity and stability, the displacement of a valve core can be synchronously followed when the given signals are low-frequency and high-frequency, and the problem that one set of PID parameters cannot adapt to the high-frequency and low-frequency given signals at the same time is solved.

The invention relates to the field of rotary drilling rigs and discloses a mast, a rotary drilling rig, a partition plate for the mast and a mast manufacturing method. The mast comprises a front coverplate (1), a rear cover plate (2) and the partition plate (3). The front cover plate (1) and the rear cover plate (2) are welded to each other to form a box-shaped structure, the partition plate (3)is arranged in the hollow cavity of the box-shaped structure and comprises a partition plate body (33) and a connecting part (34) extending from the periphery of the partition plate body (33), and thepartition plate (3) is integrally connected with the front cover plate (1) and / or the rear cover plate (2) in an attached mode through the connecting part (34). The anti-bending and anti-torsion performance of the mast can be effectively improved, the partition plate can be conveniently connected to the front cover plate and the rear cover plate through fasteners, precise positioning is not needed in the manufacturing process, and the mast manufacturing efficiency can be improved conveniently.

The invention discloses a freezing type pipe shed and a construction method thereof. The construction method comprises the following steps that an orifice pipe is horizontally embedded into an underground diaphragm wall and is installed and fixed; a drill bit is used for continuously drilling and opening a hole so as to get through the underground diaphragm wall; a pipe shed body is placed in theorifice pipe, and the pipe shed body penetrates through the underground diaphragm wall and extends into the stratum; a freezing pipe is placed in the pipe shed body; an end head closing plate is installed at the tail end opening of the pipe shed body, a hole is formed in the tail end opening of the pipe shed body, a filling grouting pipe is placed in a gap between the pipe shed body and the freezing pipe through the hole, and filling grouting is carried out so as to form a cement mortar layer; and an end head cover plate is arranged at the tail end of the freezing pipe, a liquid supply pipe and a liquid return pipe penetrate through the end head cover plate and are placed in the freezing pipe, low-temperature saline water circulation is carried out in the freezing pipe through the liquid supply pipe and the liquid return pipe so as to freeze soil around the pipe shed body, and a reinforcing body combining the pipe shed body and frozen soil is formed. The freezing type pipe shed and theconstruction method thereof have the advantages that the respective advantages of the two reinforcing modes of the pipe shed body and the freezing pipe are fully exerted; the freezing type pipe shedand the construction method thereof are suitable for dealing with complex working conditions; and the safety is good.

The invention discloses a push-lean type rotary steering drilling system comprising a drill bit, a rotary shaft, a turning part, a push-lean assembly, a transmission and a control unit. The rotary shaft comprises an upper rotary shaft and a lower rotary shaft. The turning part is arranged on the outer side of the rotary shaft in a sleeving mode. The push-lean assembly comprises a plurality of push-lean parts arranged at intervals in the circumferential direction of the turning part. The transmission device comprises a transmission mechanism driving the push-lean parts to stretch out of the turning part. The transmission mechanism comprises a driving electromagnetic gear arranged on the upper rotary shaft, and a driven electromagnetic gear arranged on the turning part. A motion conversionunit is further included and converts rotary motion of the driven electromagnetic gear into liner motion of the push-lean parts. The control unit is used for modulating a magnetic field, so that the driving and driven electromagnetic gears achieve linkage through magnetic coupling and operate with an adjustable transmission ratio. According to the push-lean type rotary steering drilling system, circuits elements, conductive sockets and the like do not need to be arranged on the turning part, the structure of the turning part is simplified, the size of the turning part is reduced effectively, flexibility of underground feed motion is improved, and cost is lowered.

The invention provides an underwater local dry laser welding system and a welding method thereof. The system comprises an industrial personal computer, an underwater robot, a SiC laser welding power source, a laser welding head, a micro drainage device, a steam exhaust device, a shielding gas device, a water cooling device, an endoscope and a panoramic camera. The output end of the SiC laser welding power source is connected with the laser welding head; the panoramic camera, the laser welding head and the micro drainage device are arranged on the underwater robot; the laser welding head is positioned in the micro drainage device and is connected with the shielding gas device; the endoscope is positioned in a welding cavity of the micro drainage device; and the steam exhaust device is communicated with the welding cavity of the micro drainage device. According to the system and the method, a surrounding environment image and an internal image of the welding cavity can be obtained, the fine adjustment of a welding path is realized, the welding precision and the welding quality are improved, and the welding system can better adapt to the complex working conditions of nuclear power equipment repair and other underwater welding operations.

The invention provides a bolt connecting nut anti-loosening structure. The bolt connecting nut anti-loosening structure comprises a connecting bolt, a nut, a stop sleeve and a stop bolt; the connecting bolt comprises a head boss; a head plane consistent with the radial direction of the connecting bolt is arranged on one side of the head boss; a rod part, a threaded part and a tail part are sequentially arranged from the head plane; the nut is in threaded connection with the threaded part, and a mounting through hole sleeved with the tail part is formed in the stop sleeve; the stop bolt is used for fixing the stop sleeve on the tail part; and one end of the nut is circumferentially provided with a plurality of grooves, one end of the stop sleeve is circumferentially and uniformly provided with at least three plug-in mounting bosses, and the plug-in mounting bosses are axially clamped with the grooves in a matched manner. Compared with the prior art, the bolt connecting nut anti-loosening structure can be suitable for various working conditions under mechanical vibration complex loads, and can effectively avoid the phenomenon that the nut does not retreat.

The invention discloses a construction method of a steel plate concrete composite structure, which comprises the following steps of: combining a steel plate, a U rib and a stud to form a steel structure outer contour, pouring concrete on the steel structure outer contour part serving as a bottom template in stages to form a medium and small span steel plate concrete composite plate, and ensuring that the steel plate and the concrete do not slip through the stud. According to the technical scheme, the steel structure and the supporting structure work cooperatively, the steel structure cannot generate overlarge deflection due to the wet weight of concrete in the construction process by means of large rigidity of the steel structure and a mode of pouring concrete in batches, and therefore the purpose that a support does not need to be erected on the lower portion in the construction process is achieved. According to the structure, the defects that common small and medium span prefabricated simply-supported plates are weak in transverse connection, and cast-in-place simply-supported plate bridges are large in dead weight and inconvenient to construct are overcome, the dead weight of the structure is effectively reduced, a support does not need to be erected, construction and emergency repair of highway bridges under the condition that traffic is not affected are facilitated, the service life is longer than that of traditional simply-supported plate bridges, and the construction cost is reduced. And the later operation and maintenance cost is reduced.

The invention discloses a new energy automobile cruise mode control method and system, and the method comprises the steps: judging whether to enter a cruise mode or not, if so, entering constant-speedcruise, and starting a vehicle-mounted radar; judging whether a followed vehicle is detected by the vehicle-mounted radar or not, and if so, entering a vehicle following mode; selecting a vehicle following mode, obtaining the speed of the vehicle and the relative speed and the relative distance between the vehicle and the followed vehicle, calculating the vehicle following time interval, and controlling the vehicle following time interval according to the vehicle following mode. The method can solve the problems that in the prior art, a car following time distance calculation method is poor in adaptability, and a car following mode cannot be selected.

The invention discloses a waste heat recovery multiple-heat-source composite type heat pump hot water supply system. The system comprises a solar heat collection water supply system, a waste heat auxiliary system and an air source heat pump water supply system. The solar heat collection water supply system at least comprises a vacuum tube heat collector and a small water tank to constitute a main direct water supply pipeline, and then the solar heat collection water supply system and a plate-fin heat exchanger constitute an auxiliary heating circuit, so that heat exchanger defrosting is achieved. The waste heat auxiliary system is at least connected with a double-pipe heat interchanger in series, a preheating heat pump system works, the inlet temperature of a compressor is increased, the working efficiency of the compressor is improved, then the waste heat auxiliary system and the plate-fin heat exchanger constitute a defrosting loop, and heat exchanger defrosting can be achieved under the empty-illumination condition at night or on cloudy days. The air source heat pump water supply system at least comprises a compressor, a condenser, a liquid storage device, a dry filter, an expansion valve, a finned heat exchanger, a double-pipe heat exchanger and a gas-liquid separator and is used for absorbing air energy and heating cold water so that the water can be directly supplied to users. System valves control all the subsystems to be opened and closed, all-weather operation of the system can be achieved without season limitations, and the working temperature is lower than -10 DEG C.

The invention discloses a liquid-phase distribution self-cleaning device for an emulsion liquid pumping plant. The liquid-phase distribution self-cleaning device comprises an oil tank, a low-pressure filter system, an emulsion liquid pump system and a high-pressure filtering system, wherein the low-pressure filter system comprises a low-pressure filter I, a low-pressure filter II, a low-pressure filter III and a low-pressure filter V; the emulsion liquid pump system comprises an emulsion liquid pump I and an emulsion liquid pump II; and the high-pressure filter system comprises a high-pressure filter I and a high-pressure filter II, and further comprises a by-pass valve set. By adopting the two shunt-wound low-pressure filters, the cleaning cycle of the low-pressure filters can be lengthened to be synchronous with the high-pressure filters; by additionally arranging reverse-cleaning valve set pipelines between the liquid outlets of the emulsion liquid pumps and the liquid inlets of both the high-pressure filters and the low-pressure filters, the filtering and self-cleaning effect in a liquid supplying system of the emulsion liquid pumping plant can be realized; the starting and closing state of the reverse-cleaning valve set pipelines can be controlled only by two three-position three-way solenoid valves and two two-postion two-way solenoid valves, so that the power consumption of the system is low, and complex underground working condition can be adapted.

The invention discloses a liquid-phase distribution self-cleaning device for an emulsion liquid pumping plant. The liquid-phase distribution self-cleaning device comprises an oil tank, a low-pressure filter system, an emulsion liquid pump system and a high-pressure filtering system, wherein the low-pressure filter system comprises a low-pressure filter I, a low-pressure filter II, a low-pressure filter III and a low-pressure filter V; the emulsion liquid pump system comprises an emulsion liquid pump I and an emulsion liquid pump II; and the high-pressure filter system comprises a high-pressure filter I and a high-pressure filter II, and further comprises a by-pass valve set. By adopting the two shunt-wound low-pressure filters, the cleaning cycle of the low-pressure filters can be lengthened to be synchronous with the high-pressure filters; by additionally arranging reverse-cleaning valve set pipelines between the liquid outlets of the emulsion liquid pumps and the liquid inlets of both the high-pressure filters and the low-pressure filters, the filtering and self-cleaning effect in a liquid supplying system of the emulsion liquid pumping plant can be realized; the starting and closing state of the reverse-cleaning valve set pipelines can be controlled only by two three-position three-way solenoid valves and two two-postion two-way solenoid valves, so that the power consumption of the system is low, and complex underground working condition can be adapted.

The invention relates to the field of rotary drilling rigs and discloses a mast, a rotary drilling rig, a partition plate for the mast and a mast manufacturing method. The mast comprises a front coverplate (1), a rear cover plate (2) and the partition plate (3). The front cover plate (1) and the rear cover plate (2) are welded to each other to form a box-shaped structure, the partition plate (3)is arranged in the hollow cavity of the box-shaped structure and comprises a partition plate body (33) and a connecting part (34) extending from the periphery of the partition plate body (33), and thepartition plate (3) is integrally connected with the front cover plate (1) and / or the rear cover plate (2) in an attached mode through the connecting part (34). The anti-bending and anti-torsion performance of the mast can be effectively improved, the partition plate can be conveniently connected to the front cover plate and the rear cover plate through fasteners, precise positioning is not needed in the manufacturing process, and the mast manufacturing efficiency can be improved conveniently.

A double-wing-plate strong support pressure-reducing gate valve comprises a valve body, a lower valve rod, a stuffing box, stuffing, a stuffing gland, a valve rod supporting frame, a bracket, a flange, a bearing, a lubricating oil nozzle, an upper valve rod, a supporting ring, a supporting seat, a gate plate, a sampling hole, a parasol wing, a plate wing, a first step, a first arc part, a second step, a second arc part and a third arc part. A through hole is formed in the gate plate and internally provided with a pressure reducing valve. The pressure reducing valve has the following structuresthat the pressure reducing valve is arranged in the through hole and comprises the parasol wing located on the downstream side and the plate wing located on the upstream side, the parasol wing and the plate wing are connected through a rod, the diameter of the parasol wing is larger than the diameter of the plate wing, the upper end of the parasol wing is flush with the upper end of the plate wing and is in pivot connection with the gate plate, and the upper end of the plate wing is in sealed connection with the gate plate.

The invention belongs to the technical field of bridge manufacturing, and in particular relates to a steel plate-concrete composite slab bridge suitable for small-span bridges that are inconvenient for large-scale hoisting and cannot be constructed by a bracket method, which solves the problem of concrete cracking at the bottom of the bridge deck and the inconvenience of hoisting concrete precast slabs. The problem that the bracket method cannot be used for construction. The invention includes a bottom steel plate, two transverse partitions, several H-shaped steels, several inverted U ribs and several studs; two transverse partitions are welded on the top of the bottom steel plate, and several H-shaped steels are arranged in the shear resistance area and are equally spaced horizontally. Welded on the top of the bottom steel plate; a number of inverted U-ribs are arranged in the middle area and are transversely welded to the top of the bottom steel plate at equal intervals; the centerlines of the inverted U-rib and the H-shaped steel are located on a straight line, and the inner end of the H-shaped steel is connected to the diaphragm. The plate is welded and fixed, and the two ends of the inverted U-rib are welded and fixed with the diaphragm. The invention improves the bearing capacity, rigidity and overall working performance of the small-span simply supported slab bridge, and solves the problem of concrete cracking at the bottom of the bridge deck.

The invention discloses a pressure control system. The pressure control system comprises a pump, a first switch, a second switch, a first three-way valve, an energy accumulator, a hydraulic cylinder,a second three-way valve, an oil tank, an electromagnetic valve and a brake valve; liquid in the pump is connected with a first cavity of the hydraulic cylinder through a main circuit and connected with a second cavity of the hydraulic cylinder through an auxiliary circuit; the main circuit comprises the first switch, the brake valve and the first three-way valve; the auxiliary circuit comprises the electromagnetic valve; liquid released through decompression is delivered out from the brake valve and then connected to the energy accumulator through the first three-way valve, the downstream endof the energy accumulator is connected to the second three-way valve, and the three ends of the second three-way valve are connected with the main circuit, the energy accumulator and the oil tank; and the main circuit, a branch circuit including the energy accumulator and a branch including the second switch are connected in parallel.

The invention relates to the technical field of multi-degree-of-freedom motion platforms, in particular to a multi-degree-of-freedom motion platform capable of being greatly controlled in the vertical direction and a method, and the multi-degree-of-freedom motion platform comprises a six-degree-of-freedom motion platform used for multi-degree-of-freedom lifting and steering motion; the six-degree-of-freedom motion platform is used for supporting the six-degree-of-freedom motion platform, the three-degree-of-freedom motion base is used for achieving adjustment in a three-degree-of-freedom space and conducting auxiliary enhancement on the height and the angle of the six-degree-of-freedom motion platform, the bearing table is arranged between the six-degree-of-freedom motion platform and the three-degree-of-freedom motion base, and the top of the three-degree-of-freedom motion base supports the bearing table. A driving part of the six-degree-of-freedom motion platform is designed to be a transverse electric linear guide rail driven by double independent lead screws, and more space adjusting ranges can be provided in the vertical direction; the three-degree-of-freedom motion base is arranged below the six-degree-of-freedom motion platform for assistance, the deflection angle in the vertical direction is further expanded, and greatly controllable multi-degree-of-freedom simulation motion in the vertical direction is achieved.

The invention relates to a transmission device, in particular to a synchronous tooth-shaped rope transmission device. The device comprises a synchronous tooth-shaped rope and a synchronous tooth-shaped rope wheel, the synchronous tooth-shaped rope comprises a rope body and a belt tooth layer, the synchronous tooth-shaped rope wheel comprises a belt wheel body and tooth grooves formed in the belt wheel body, the belt tooth layer is a cylindrical surface, closed annular teeth are arranged on the inner circumferential surface of the cylindrical surface belt tooth layer at equal intervals, cylindrical surface grooves are formed in the outer circumferential surface of the belt wheel body of the synchronous toothed rope wheel, and arc-shaped teeth are arranged on the cylindrical surface groovesat equal intervals. The synchronous tooth-shaped rope transmission device has the traditional advantages of a traditional synchronous toothed belt, such as accurate transmission ratio, stable transmission, high transmission efficiency and the like, and also has the advantages of realization of transmission and speed change of axes at any angle, larger transmission power, long transmission distanceand the like.

The invention relates to a pressure-controlled drilling method and device with a single throttle channel adaptable to large flow changes, which are applied in the field of wellbore pressure and flow control in petroleum and natural gas drilling. The device is composed of standpipe measurement system, back pressure compensation manifold and flow measurement system, connection manifold, automatic throttle manifold, wellhead return flow measurement system, signal acquisition and logic control system, and can measure bottom hole pressure, wellhead Accurately measure vertical pressure, casing pressure, and pumped and returned flow of drilling fluid, and analyze the bottomhole working conditions through logic control system analysis, and then select closed-loop control or block experience mode to automatically adjust the choke manifold in real time Apply back pressure to the wellhead to achieve good wellbore pressure control, thus effectively solving complex downhole problems such as narrow density window and co-existence of blowout and leakage.