56results about How to "Consistent service life" patented technology

Devices and methods for control flow of formation fluids respect to one or more selected parameter relating to the wellbore fluid. In one embodiment, a flow control device for controlling fluid flow into the production tubular uses a flow restriction member that is actuated by a character change of the formation fluid, such as liquid to gas or oil to water. The flow restriction member can be sensitive to a change in density of the formation fluid. The flow restriction member is passive, self-regulating and does not need any power source or control signal to control fluid flow. In one embodiment, the flow control device automatically rotates into a predetermined orientation upon being positioned in the wellbore. A seal disposed on the flow control devices expands into sealing engagement with an enclosure after the flow control device assumed the desired predetermined position.

The invention discloses a filter element structure easy to replace. A filter element main body is installed in a filter element shell, the filter element main body consists of a plurality of filter element separation layers, a water inlet hole and a water outlet hole are formed in each filter element separation layer, and the water inlet hole and the water outlet hole are respectively communicated with a water flowing channel and a water discharging channel of each filter element separation layer; a water distributing rotation mechanism is installed on the filter element shell in a rotating manner, and a first water flowing hole and a second water flowing hole are formed in the water distributing rotation mechanism; the first water flowing hole is communicated with the water inlet hole of the filter core separation layer and the filter element water inlet end, and the second water flowing hole is communicated with the water outlet hole of the filter element separation layer and the filter element water outlet end; the water distributing rotation mechanism is rotated, the first water flowing hole and the second water flowing hole are gradually communicated with the water inlet hole and the water outlet hole of different filter element separation layers one by one, and the filter element separation layers are gradually connected into to a water route to filter the water one by one. According to the filter element structure, the plurality of filter element separation layers are integrated and integrally encapsulated, so that the material is saved; the novel filter element separation layers are automatically switched to be used, the moment for replacing the filter element is judged, and the moment for replacing the filter element is more accurate.

The present invention provide for solutions of a defined composition useful in a staining protocol, such as a hematoxylin and eosin staining protocol, when used at certain points of the staining protocol. The formulations of these defined solutions are such that carry-over of the solutions will not negatively impact, or preferably, will stabilize or favorably modify staining reagent solutions coming in contact with the solutions. In certain embodiments of the invention, solutions are buffered to maintain a specific pH that when carried-over—such as carried-over into hematoxylin—will not significantly influence the pH of the next staining reagent.

The invention relates to a locomotive network control system and in particular to a high-redundancy locomotive network control system to solve the poor reliable redundancy of an existing locomotive network control system. The high-redundancy locomotive network control system includes two VCUs and two or more RIOMs, wherein two VCUs are arranged on two back motherboards respectively; two power boards are integrated into each single back motherboard; and two power boards 1# and 2# are integrated into each RIOM. For the key digital quantity input signal of the locomotive, the key digital quantityinput signal of the locomotive and its redundant signal should be input into a digital quantity input board powered by the 1# power board and a digital quantity input board powered by the 2# power board of the RIOMs respectively. For the key output signal of the locomotive, the key output signal of the locomotive and its redundant command should be controlled by a digital quantity output board powered by the 1# power board and a digital quantity output board powered by the 2# power board.

The invention discloses a reactive compensation device and method for partially regulating voltages and capacitance of a three-phase four-wire power grid. The reactive compensation device comprises a U-phase voltage and capacitance regulating reactive compensation unit, a V-phase voltage and capacitance regulating reactive compensation unit, a W-phase voltage and capacitance regulating reactive compensation unit and a control unit. Each phase of voltage and capacitance regulating reactive compensation unit is mainly composed of a current detection element, a voltage detection element, a full-voltage compensation capacitor bank, an auto-transformer and a voltage-regulating capacitor bank. The control mode of independent reactive compensation in each phase is used in the three-phase four-wire power grid, total capacitance in each phase is uniform, the capacitance in each phase is evenly divided into n sets, wherein one set of the capacitance is subjected to voltage and capacitance regulation through the auto-transformer which totally has m levels of output voltages, each phase has n*m grades of compensation, and multi-level fine compensation for the power grid is achieved.

The invention provides a large-pitch thread turning tool design method. According to the technical main points, the method comprises the steps of (1) determining a process scheme and a procedure cutting method according to structure characteristics of a processed large-pitch thread workpiece and setting a cutting tool with a basic tool structure suitable for turning the large-pitch thread workpiece, wherein the basic tool structure of the cutting tool comprises a tool cutting edge structure and parameters thereof; (2) carrying out tool cutting interference checking, if interference does not exist, determining a cutting experiment on the workpiece by using the cutting tool; (3) inputting a cutting scheme to turn the workpiece and obtaining a tool vibration signal and a rear tool surface abrasion image of the tool; and (4) evaluating the cutting scheme of the cutting tool by taking the dynamic load consistency of left and right edges of the cutting tool, the left, right and back tool surface abrasion consistency of the cutting tool, the processing precision of left and right thread surfaces of the workpiece and the processing surface quality consistency as design objectives. According to the large-pitch thread turning tool design method, the loads of the left and right edges of the tool are improved; the abrasion is reduced; the consistency is good; and the processing quality of the workpiece is improved.

A compound heat preservation plate is characterized in that the compound heat preservation plate is composed of silica aerogel, polycarbamate, cement, efficient flame retardant, flame retardant, antiager D and expanded perlite in an evenly mixing and stirring mode. The compound heat preservation plate comprises, by weight, 0.5-1.5 kilograms of silica aerogel, 25-35 kilograms of polycarbamate, 4-6 kilograms of cement, 2-3 kilograms of efficient flame retardant, 0.5-1 kilogram of flame retardant, 0.1-0.3 kilogram of antiager D and 25-35 kilograms of expanded perlite which are respectively placed into a stirring pot to be evenly stirred. After prefabricated foaming, the compound heat preservation plate is prepared through drying. The compound heat preservation plate is small in hygroscopicity, low in heat conductive coefficient, extensive in temperature range, light in material quality, firm, durable and convenient to use, and completely conforms nationally advocated requirements such as fireproofing, heat preservation, environmental protection and energy saving.

Disclosed are an integrated composite filter cartridge (200) and a water purifying system (300) having same. The integrated composite filter cartridge (200) comprises: an outer shell (20), wherein a chamber (21) is defined in the outer shell (20), and the outer shell (20) is provided with a raw water inlet (22), a pre-treated water outlet (23), a pre-treated water inlet (24), a purified water outlet (25) and a waste water outlet (26) which are in communication with the chamber (21); a pre-treatment filter cartridge (100); a central pipe (30); a filter membrane (40); and a control member, which is connected to the pre-treated water outlet (23) and the pre-treated water inlet (24). When the integrated composite filter cartridge (200) is used for the first time, the control member switches on the raw water inlet (22) and the pre-treated water outlet (23) and switches off the pre-treated water inlet (24).

The invention provides a hot press molding method for a spherical head made of 10CrNi3MoV steel and belongs to the field of machining and manufacturing methods of end sockets of sealing pressure structures of ship bathyscaphs. The problems that an existing spherical head cold machining and forming process is high in cost and machining stress is difficult to eliminate are solved, so that cost is reduced, and the service life of the spherical head made of the 10CrNi3MoV steel is prolonged. The method includes the round plate heating step, the die forming step, the quenching treatment step and the tempering treatment step. By the adoption of the method, the requirements for pressing die and stamping equipment are lowered, stamping forming is easy to control, quality is better, machining stress does not exist, it can be guaranteed that the mechanical performance of the spherical head made of the 10CrNi3MoV steel is identical to that of the 10CrNi3MoV steel plate, and therefore it is guaranteed that the service life of the spherical head made of the 10CrNi3MoV steel is identical to that of a ship.

The invention discloses a charge and discharge control method and system for a reconfigurable super capacitor stack based on temperature suppression. The method comprises the following steps: periodically acquiring the temperature of each super-capacitor monomer in a charge and discharge process, wherein the super-capacitor monomers are connected in series and in parallel through a controllable switch; 2, carrying out temperature suppression processing in real time according to the temperature of each super-capacitor monomer collected each time, wherein the temperature suppression process comprises the step: calculating the difference value between the currently collected temperature of each super-capacitor monomer and the average temperature; obtaining a reconstruction control signal of each super-capacitor monomer according to the difference value information; and controlling the on-off of a controllable switch of each super-capacitor monomer according to the reconstruction control signal of each super-capacitor monomer. According to the invention, the temperature suppression is realized by controlling access and cut-out of the super-capacitor monomers in the charging and discharging process, so that the service life of the whole super-capacitor stack is prolonged, and the service lives of all the single super-capacitor stacks are consistent.

The invention discloses a current sharing method of an IGBT parallel circuit. The current sharing method comprises the steps: obtaining IGBT temperature information; determining an IGBT circuit to beadjusted according to the IGBT temperature information; driving current and / or driving voltage adjustment is carried out on the IGBT circuit to be adjusted, wherein a difference value between the temperature of the IGBT circuit to be adjusted and the temperature of the reference IGBT circuit does not exceed a first threshold value. According to the method disclosed in the invention, the current inthe circuit is judged and compared through the temperature in the single IGBT circuit; the IGBT circuits to be adjusted are determined, the current flowing through the IGBT circuit to be adjusted ischanged, the temperature difference between the IGBT circuits is reduced, the working stability of the IGBT parallel circuit is ensured, and the service life of the IGBT parallel circuit is prolonged.The invention further provides a current sharing device and equipment of the IGBT parallel circuit, a computer readable storage medium and the IGBT parallel circuit, wherein the current sharing device and equipment have the beneficial effects.

The invention provides a composite filter core assembly and a water purification system, the composite filter core assembly comprises a bottle body (604) and multistage filter cores arranged in the bottle body, a pretreatment filter core, a fine filter core (203) and a post-treatment filter core group; wherein the post-treatment filter element group comprises a central pipe (602), and the centralpipe (602) is made of a filter material capable of allowing fluid to pass through; fluid sequentially passes through the pretreatment filter core, the fine filter core and the post-treatment filter core group to be filtered, and a descaling filter core (204) is further arranged between the pretreatment filter core and the fine filter core (203) in the flowing direction of the fluid. According to the invention, water to-be-treated is treated by the sintering carbon rod and then is treated by the descaling filter core before entering a reverse osmosis filter element; therefore, the possibility of scaling of the concentrated water in the composite filter element is greatly reduced, blockage in the composite filter core is effectively prevented, and the service life of the composite filter element is longer.

The invention discloses a winding method of heat-shrinkage adhesive tape used for a bent pipe. Three-stage heating processes are adopted, and the three-stage heating temperatures are strictly controlled. A pipe body is preheated in the first-stage heating process; the double faces of the heat-shrinkage adhesive tape are heated in the second-stage heating process; the pipe body wound with the heat-shrinkage adhesive tape is heated in the third-stage heating process, a rolling and grinding process is comprehensively utilized for rolling and grinding the bent pipe in a winding mode, and the feeding size of the bent pipe and the overlapping size of the heat-shrinkage adhesive tape are strictly limited, so that the purposes that the winding precision is high, the surface of a coating layer is flat and smooth and free of wrinkles, warping edges and bubbles, the coating layer overlapping position is flat, excessive glue is sufficient and uniform, and the service life of the heat-shrinkage adhesive tape is consistent with that of the pipe are achieved; and meanwhile, the problems that the labor intensity of manual winding is high, the heat-shrinkage adhesive tape is prone to winding deviation, and winding is not firm are solved.

The invention relates to a tool in the process of smelting molten iron, in particular to a spraying gun for jetting powder in the pretreatments of desulphurization, dephophorization and desilicification in the process of smelting the molten iron. The molten iron pretreatment spraying gun comprises an internal steel pipe (1) and a fireproof material layer (2) enwrapped on the outer surface, wherein the jetting end at the lower end of the steel pipe (1) is bended, the cross section of the outer surface of the fireproof material layer (2) is a regular polygon, and a layer of steel wire gauze (3) is bound between the steel pipe (1) and the fireproof material layer (2). The molten iron pretreatment spraying gun surely achieves the expectant purpose, lightens the weight of the spraying gun, reduces the manufacturing cost, and simultaneously reduces the factory building height in a molten iron pretreatment operational area, promotes the requirements on devices, prolongs the service life, and improves the effects of the desulphurization, the dephophorization and the desilicification.

The invention discloses a precious metal composite wire and a preparation method thereof. The composite wire comprises an inner-layer wire core and an outer coating layer coating the wire core. The outer coating layer is a nickel alloy layer. The inner-layer wire core is a precious metal wire core. The outer coating layer and the inner-layer wire core are combined to form the precious metal composite wire. When the precious metal composite wire is prepared, a nickel alloy material is prepared into a hollow bloom, a precious metal material is prepared into the wire core, finally, the wire core is embedded into the hollow bloom, and the precious metal composite wire is formed through drawing. According to the precious metal composite wire, the using amount of precious metal is effectively reduced, the production cost is greatly reduced, the performance and the service life of the precious metal composite wire coincide with those of precious metal for independent use, and the using requirement and technological requirement for a detecting electrode can be well met.

The invention relates to a power lithium-ion battery with a temperature equalizing connection function. The power lithium-ion battery comprises a battery cell which is provided with a battery anode connection portion and a battery cathode connection portion, the battery cell is covered with a heat equalizing material outside and is arranged inside a battery call casing, the heat equalizing material extends outside the battery call casing, and the heat equalizing material outside the battery call casing serves as a first outside connection portion. According to the power lithium-ion battery with the temperature equalizing connection function, the battery has a uniform temperature on the whole when used.

The invention relates to a multi-beltsaw drive mechanism and a working method thereof. The multi-beltsaw drive mechanism comprises a rack. The rack is provided with multiple upper belt wheels and lower belt wheels, wherein the upper belt wheels and the lower belt wheels are arranged coaxially, the diameters of the upper belt wheels and the lower belt wheels are increased gradually. Multiple beltsaw blades for forming a multi-circle ring-shaped structure are installed on the upper belt wheels and the lower belt wheels in a sleeving manner. The rack is provided with a drive rotating shaft located between the upper belt wheels and the lower belt wheels. Multiple belt wheels are installed on the drive rotating shaft in a sleeving manner, wherein the belt wheels correspond to the upper belt wheels or the lower belt wheels one to one, and the diameters of the belt wheels are reduced gradually. The belt wheels and the corresponding upper belt wheels or lower belt wheels are connected in a transmission manner through transmission belts. According to the multi-beltsaw drive mechanism, linear speeds of all the lower belt wheels can be consistent basically, it is ensured that all the beltsawblades can keep the consistent linear speeds to work, it is ensured that the service life of all the beltsaw blades tends to be consistent, the situation that due to the too high linear speed, the beltsaw blades on the belt wheels with the large diameters are scraped in advance, the shutdown overhaul frequency is reduced, the schedule of workpieces is ensured, and the economic benefits are increased.

The invention discloses a precise weighing and automatic sorting production process. The process comprises the steps that A, products are placed on a cleaning station to be cleaned; b, after being cleaned, the product is conveyed into a product runner through a vibration disc; c, the product falls to a precise damping weighing device from the product runner and then is weighed; d, the product is subjected to first-step buffering through a buffering device; e, buoyancy damping is conducted on the product through a water pressure buoyancy damping device; f, feeding into corresponding graded packaging bags according to different grades; by arranging the spring damping device, the supporting disc is buffered through damping of a mechanical spring, so that a product above the supporting disc is prevented from vibrating the supporting disc, and the weighing speed and the weighing stability are improved; and the water pressure buoyancy damping device is arranged, and the supporting disc can descend and ascend more slowly through water pressure buoyancy damping, so that reciprocating motion caused by damping is avoided, and the supporting disc can be better and rapidly stopped stably for weighing.

The invention provides a multi-stage serial connection spherical particle active electrode reaction device, which comprises an insulated reaction device case, wherein the top of the reaction device case is provided with an exhaust pipe and a water outlet pipe; the bottom of the reaction device case is provided with a mud collecting hopper; the bottom of the mud collecting hopper is provided with a water inlet pipe and a mud discharging pipe; a set of multi-stage serial connection spherical particle active electrode reaction system is fixed inside the reaction device through a positioning pin, and comprises spherical particle active electrodes in A row, B lines and C layers; the spherical particle active electrode carriers are spherical titanium metal spheres; a composite noble metal oxide coating is coated at the outer layer; three hole passages which pass through sphere cores and are mutually vertical are formed in the middle; a positioning insulation plastic rod respectively passes through each hole passage; A*B*C particle electrodes are fixed into A rows, B lines and C layers with equal distances, wherein the first spherical particle active electrodes are connected with a positive electrode of an external direct current power supply; the (A*B*C)-th spherical particle active electrode is connected with a negative electrode of the external direct current power supply; the current is enabled to flow through all spherical particle active electrodes.

The invention discloses a control method, a display screen and electronic equipment. The control method is used for the display screen. The display screen comprises a first display area and a second display area; a functional assembly is arranged below the second display area, and light emitted and / or received by the functional assembly penetrates through the second display area. The control method comprises the steps: acquiring the first brightness attenuation information of a first display area; acquiring second brightness attenuation information of a second display area; determining an attenuation difference according to the first brightness attenuation information and the second brightness attenuation information; determining preset display brightness according to the attenuation difference; and controlling the second display area to display at preset display brightness to enable the attenuation difference to be smaller than a preset attenuation difference. According to the controlmethod, the display screen and the electronic equipment, the brightness difference between the second display area and the first display area is small, and the service life of the second display areaand the service life of the first display area are basically consistent.

The invention discloses a container for placing toilet cleaning articles and prolonging the release period, relates to the technical field of toilet cleaning articles and the container comprises a left shell and a right shell, the left shell and the right shell are fastened to form a cavity for holding the toilet cleaning articles, a water inlet is arranged on the upper portion of the cavity, anda gap for discharging water is reserved after the left shell and the right shell are fastened. According to the invention, the size of the gap after buckling can be controlled; according to the toiletbowl, the width of the gap, the length of the gap in the buckling circumferential direction and the like are adjusted, so that the dripping speed of the effective solution is controlled, namely, therelease period of the effective solution is controlled, the release period is prolonged, most of the solution stays in the toilet bowl, the effective substance content of the toilet cleaner in the toilet bowl is guaranteed, waste is reduced, and the practical effect is improved.

The invention discloses a filtered water system which comprises a plurality of fine filtration filter elements connected in series in sequence, and a first on-off valve, a second on-off valve, a thirdon-off valve and a fourth on-off valve arranged on a series flow path. By switching on-off states of the four on-off valves, sometimes raw water sequentially flows from the first of the plurality offine filtration filter elements to the last of the plurality of fine filtration filter elements via a raw water inlet, and then sequentially flows from the last of the plurality of fine filtration filter elements to the first of the plurality of fine filtration filter elements via the raw water inlet sometimes. According to the filtered water system disclosed by the invention, positive water intake and reverse water intake of the raw water in the plurality of fine filtration filter elements can be realized, so that the plurality of fine filtration filter elements connected in series have roughly consistent service life, and the problem that the last few, particularly the last one in the plurality of fine filtration filter elements connected in series is frequently blocked and needs to be often replaced can be improved.

The invention discloses a power supply management system and a power supply management method. The method comprises the steps that a system power supply is monitored in real time; when the system power supply is powered off, a power supply device currently having the maximum total residual power is selected out of multiple power supply devices and the power supply device is controlled to discharge, and the next power supply device having the maximum total residual power is switched on to perform discharging after the end of discharging of the current power supply device; and when the system power supply is powered on, the power supply device currently having the maximum total residual power is selected out of multiple power supply devices and the power supply device is charged, and the next power supply device having the maximum total residual power is switched on to perform charging after the end of power charging of the current power supply device. Capacity expanding of a DC power supply system can be effectively realized through parallel use of multiple sets of power supply devices, and multiple sets of low-capacity old batteries can be utilized so that the capacity expanding cost can be greatly saved and the service life of all sets of battery packs is ensured to be consistent.

The invention discloses an anti-stripping castable at a kiln mouth and a method for using the same. Aluminum powder, 3-6 parts of calcium ferric aluminate powder, 0.01-0.03 parts of polypropylene fiber, 0.01-0.03 parts of dispersant and 4-6 parts of composite sol; using method: S1. The hot steel and heat-resistant steel are arranged longitudinally and radially, with a distance of 15-20cm and a height of 2 / 3 of the thickness of the casting layer; S2. Coating tar on the surface of the heat-resistant steel; S3. Mold support; S4. Titanoaluminic acid, spodumene, dispersible alumina powder, calcium ferric aluminate powder, polypropylene fiber, dispersant and composite sol are prepared in proportion, mixed and stirred evenly and poured into the mold for casting; S5. Demoulding Conservation, heating and baking, put into use. The invention improves the thermal shock resistance of the castable, avoids the cracking and peeling phenomenon caused by temperature fluctuation, has higher strength and wear resistance, and improves the service life.

The invention belongs to the technical field of power semiconductor devices, and particularly discloses a symmetrically-arranged full-bridge power module, and power chips form four bridge arms of a full-bridge circuit topology; the back surfaces of the power chips forming the two upper bridge arms are welded on the positive electrode metal layer of the insulating substrate, and the front surfaces of the power chips are connected with the corresponding metal layers of the insulating substrate through bonding wires; the back faces of the power chips forming the two lower bridge arms are welded to the two alternating current electrode metal layers of the insulating substrate, the front faces of the power chips are connected with the corresponding metal layers of the insulating substrate through bonding wires, and switch tube driving circuits of the power chips are connected through Kelvin. According to the power module, after the switch tube chip is removed and only the diode chip is reserved, the full-bridge rectification circuit topology can be realized. Through layout design of the copper layers, the power devices and the terminals, symmetry between the two half-bridge branches and symmetry between the two commutation loops of the same half-bridge branch are achieved, a small parasitic inductance value is achieved, and turn-off overvoltage and switch oscillation are reduced.

The invention relates to a bidirectional communication system with a transmission channel selection function, and the system comprises a receiving module which comprises a receiving unit and a first detection unit and is used for detecting the signal-to-noise ratio of received voice information; an output module which comprises a sending unit and a second detection unit, wherein the sending unit is used for coding the voice and then outputting the coded voice to other receiving ends through a transmission channel so as to detect the data length of the coded voice; and a processing module which is respectively connected with the first detection unit and the second detection unit, selects a transmission channel according to the signal-to-noise ratio detected by the first detection unit and the encoded data length when the output module performs voice transmission, and corrects channel selection according to the signal-to-noise ratio of the received voice information, in this way, the receiving module and the output module can correct the other using state according to the using state of one of the receiving module and the output module in the using process, and therefore the service life of the receiving module and the service life of the output module tend to be consistent.

The invention discloses a reactive compensation device and method for partially regulating voltages and capacitance of a three-phase four-wire power grid. The reactive compensation device comprises a U-phase voltage and capacitance regulating reactive compensation unit, a V-phase voltage and capacitance regulating reactive compensation unit, a W-phase voltage and capacitance regulating reactive compensation unit and a control unit. Each phase of voltage and capacitance regulating reactive compensation unit is mainly composed of a current detection element, a voltage detection element, a full-voltage compensation capacitor bank, an auto-transformer and a voltage-regulating capacitor bank. The control mode of independent reactive compensation in each phase is used in the three-phase four-wire power grid, total capacitance in each phase is uniform, the capacitance in each phase is evenly divided into n sets, wherein one set of the capacitance is subjected to voltage and capacitance regulation through the auto-transformer which totally has m levels of output voltages, each phase has n*m grades of compensation, and multi-level fine compensation for the power grid is achieved.