161results about How to "Avoid service life" patented technology

The invention provides a device and a method for testing normal-temperature and high-temperature compression stress relaxation of rubber. The device mainly comprises an upper plate, a lower plate, a limiter, a pressure sensor, a pressure head and a flange. The upper plate is fixed to the lower plate through the limiter. The pressure sensor is fixed at a center position of the upper plate and is located between the upper plate and the lower plate. The pressure head is fixed at another end of the pressure sensor. A rubber sample is fixed at a center position of the lower plate by the flange and contacts with the pressure head. The method comprises the following steps of preparing an appropriate rubber sample, assembling the device, fixing exactly the appropriate rubber sample at the center of the lower plate, contacting the appropriate rubber sample with the pressure head, removing the flange, putting the device into an aging test box for an experiment, and after the experiment is finished, determining compression stress relaxation coefficients of the appropriate rubber sample. Through the device and the method, normal-temperature and high-temperature compression stress relaxation tests are realized; real-time monitoring of compression stress variation is realized; and the accuracy, the repeatability and the reproducibility of a life prediction result are guaranteed.

The utility model provides a life predicting model based on test equipment for room-temperature and high-pressure compression stress relaxation of rubber. The life predicting model comprises the following steps of: firstly, drawing stress relaxation change data acquired by the device into a diagram to obtain the relation between the stress relaxation condition and the ageing time and the relation between the speed constant and the ageing temperature; secondly, obtaining all coefficients in the equation by utilizing an approximation method, a linear regression method and MATLAB programming software, and judging the linear regression effect according to the related method; and finally, determining a rubber life predicting value after giving critical values of temperature and stress relaxation. The life predicting model has the advantages that the device for testing the compression stress relaxation of high-temperature rubber can be utilized for monitoring the change of the compression stress, so as to establish the life predicting model, and the accuracy, the repeatability and the reproducibility of a life predicting result are guaranteed.

The invention discloses a preparation method of a particle-reinforced metal matrix composite material, and belongs to the technical field of a novel material. The method comprises the following steps: firstly, putting reinforced particles and matrix powder into a ball grinder, so as to evenly mix; then putting the mixed powder into a graphite jig, putting into spark plasma sintering (SPS) equipment; setting a proper sintering parameter, and putting the sintered sample into a vacuum tube furnace to set heating temperature, so as to change a bonding interface between the reinforced particles and the matrix in the composite material, or prompt interface reaction. The reinforced particles in the composite material prepared by the method can be well evenly distributed inside a composite layer, so that the comprehensive properties of the materials are greatly improved, the composite material is even and single in texture, the mechanical property can be changed to a certain extent, and reference is provided for high-temperature wear-resisting fields, such as steel, metallurgy, coal and the like, parts under chilled and heated conditions or other researchers for researching the composite material performances.

Disclosed is a sterilization apparatus using hydrogen peroxide, which comprises a housing which has a sterilization chamber for accommodating to-be-sterilized objects; an evaporator connected with the sterilization chamber for supplying hydrogen peroxide vapor to the sterilization chamber for the purpose of sterilizing to-be-sterilized objects; a hydrogen peroxide supply apparatus connected with the evaporator for the purpose of supplying liquid hydrogen peroxide to the evaporator; an enrichment chamber connected with the evaporator for the purpose of evaporating moisture from the hydrogen peroxide supplied to the evaporator and sucking the evaporated moisture, thus enriching the hydrogen peroxide; a vacuum pump connected with the enrichment chamber for the purpose of providing a vacuum pressure to the enrichment chamber; a blower which includes a fan disposed in the interior of the sterilization chamber for forcibly flowing the air of the sterilization chamber and is a motor for driving the fan; and a fan heater disposed in the interior of the sterilization chamber for the purpose heating the air flowing by means of the fan. The sterilization apparatus using hydrogen peroxide according to the present invention makes it possible to enrich the hydrogen peroxide using an enrichment chamber, and the sterilization power with respect to the to-be-sterilized objects can be enhanced.

A battery pack including at least one secondary battery and supplying power to predetermined equipment is disclosed. In the battery pack, charging current to the secondary battery supplied from an external charging device is cut off to suspend charging the secondary battery until receiving a predetermined instruction from the external charging device. The battery pack may comprise a first communication circuit unit for communicating with the external charging device; a first switching circuit unit for cutting off the charging current from the external charging device to the secondary battery; and a control circuit unit for controlling the first switching circuit unit based on information received by the first communication circuit unit. The control circuit unit instructs the first switching circuit unit to cut off the charging current from the external charging device to the secondary battery and suspend charging the secondary battery until receiving the predetermined instruction from the external charging device via the first communication circuit unit.

The present invention is a cooling block that forms an electrode for generating a plasma for use in a plasma process, and includes a channel for a cooling liquid, the cooling block comprising: a first base material and a second base material respectively made of aluminum, at least one of the first and second base materials having a recess for forming a channel for a cooling liquid; and a diffusion bonding layer, in which zinc is diffused in aluminum, and an anti-corrosion layer of a zinc oxide film, the layers being formed by interposing zinc between the first and second base materials, and by bonding the first and second base materials with zinc interposed therebetween in a heating atmosphere containing oxygen.

Feeding method of biomass power plant feeding system is that a straw bulk is transported and enhanced delivery method, especially for the yellow straw broken, the material on the feeding method as follows: straw package grab crane (1) -> disport-platform (2) -> first board chain conveyor (3) -> second board chain conveyor (4) -> straw crusher (5) -> belt conveyor with corrugated wall ( 6) -> Front silo distributor (7) -> boiler feed screw conveyor (8) -> furnace, the system layout is compact, intermediate link small, high reliability, strong adaptability to different material characteristics.

The invention discloses a bending device and a display device. The bending device comprises first and second supporting portions composed of plate-shaped extensible structures and a bending portion inrotary connection with the first supporting portion and the second supporting portion, movement of the bending portion with respect to the first supporting portion and the second supporting portion is achieved through the extensible first and second supporting portions, accordingly change of bendable parts of the bending device is achieved, and the purpose of multiple-part bending of the bendingdevice is achieved. In addition, the bending device can achieve multi-part bending, so that the bent position of a flexible display panel is not fixed, and the problem is avoided that the same position of the flexible display panel is bent multiple times for a long time, accordingly the service life is likely shortened, and the reliability is likely reduced.

The invention relates to the field of preparation of synthetic gas through dry reforming of methane, and discloses a method for preparing synthetic gas through dry reforming of methane. The loading amount of an active metal component Ni in a catalyst in a catalyst bed of a dry reforming reaction of methane is controlled, and a Al2O3 carrier and/or a Al2O3 carrier modified with an auxiliary agent is adopted. Even in relatively high reaction velocity, temperature dispersion of the catalyst bed is basically uniform, and an area where carbon is easily thermodynamically accumulated can be avoided, so that the catalytic stability of a catalyst is greatly improved and the service life of the catalyst can be prolonged.

A printer system capable of reducing wasteful power consumption by apparatuses forming the printer system and preventing the service lives of the apparatuses from being shortened and capable of optimizing the capacity of power source. When power of the apparatuses of the printer system is on, a slave controller of each apparatus calculates a preparatory operation time of the apparatus, and transmits the calculated preparatory operation time to a master controller. Based on preparatory operation times indicated by data received from the slave controllers, the master controller determines start-up commencement times (start-up timings) of the slave controllers, and requests (instructs) the slave controllers to start operations upon elapsed of the determined start-up commencement times. In response to received operation start requests, the slave controllers start preparatory operations.

A method for fixing battery cells includes positioning each battery cell in a respective opening of a cell fixture; inserting a first side of each battery cell into a respective opening of a first cell carrier; inserting a second side, opposite to the first side, of each battery cell into a respective opening of a second cell carrier, such that the cell fixture is positioned between the first and second cell carriers; and pressing the first and second cell carriers together to compress the cell fixture.

The invention discloses a tension control method and device for a scraper conveyor. The tension control method includes the following steps that a parameter acquisition step is carried out, specifically, a tension control mode set by a user and torque of a machine tail driving motor are obtained; and a tension control step is carried out, the corresponding control is carried out according to the set tension control mode, the tension control mode is a stroke adjustment mode or a tension adjustment mode, the stroke adjustment mode adjusts stroke of a hydraulic cylinderaccording to the torque, and the tension adjustment mode adjusts tension according to the torque. According to the tension control method and device for the scraper conveyor, the load condition is directly reflected according to the torque of the machine tail driving motor, the tension or stroke of a tension cylinder is adjusted dynamically according to the load, so that the scraper conveyor is always kept at an appropriatetension value during transportation, finally a chain is kept in a reasonable deformation range, the problems of chain clamping, chain breaking or damage to a chain wheel are solved, and the problem of reducing the service life of the chain due to excessive tension is solved.

To prevent lowering and unstableness of magnetic force and trouble caused by influence of muddy water or the like entered between the magnetic encoder (21) and a magnetic sensor (6), a sealing apparatus (4) comprises an approximately C-shaped protecting annular member (11) fitted to one of an inner member (1) and an outer member (2), a first encoder member (12) having a cylinder portion (12a) fitted to the protecting annular member (11), a second encoder member (13) held between the protecting annular member (11) and the first encoder member (12), a seal annular member (14), and a seal member (15) which is vulcanized and bonded to the seal annular member (14) and has seal lips slidably contacting with the protecting annular member (11) and the encoder member (12).

The invention relates to a mechanical stirring device for production of manganese-iron alloy, and belongs to the technical field of iron alloy and casting production. The mechanical stirring device comprises a lifting motor, a lifting guide rod, an electric cabinet, a guide rail vertical column, a lifting wheel group, a lifting cross arm support, a rotating motor, a rotating guide wheel, a rotating frame and a stirring paddle, wherein the lifting cross arm support is arranged on the guide rail vertical column; the lifting system composed of the lifting motor, the lifting guide rod, the electric cabinet, the lifting wheel group, the lifting cross arm support and the like can lift the cross arm support so as to drive the stirring paddle to be lifted and lowered in a alloy liquid and a slag liquid; the rotating system composed of the electric cabinet, the rotating motor, the rotating guide wheel, the rotating frame, the stirring paddle and the like can enable the stirring paddle to rotate in the alloy liquid and the slag liquid. The mechanical stirring device has the advantages that the stirring paddle can accurately fall on the interface of the alloy liquid and the slag liquid, thus the solution stirring can be directly completed, the reaction efficiency is higher than that of the shaking ladle process, the power consumption is reduced, the recovery rate of manganese in the alloy is high, the mass fraction of manganese oxide in the final slag is far lower than that produced by using the shaking ladle process.

The invention provides an air guiding door power-on reset control method and device and an air conditioner. The control method comprises the steps that displacement parameters of an air guiding door within the preset time duration are obtained; the opening and closing state of the air guiding door is judged according to the displacement parameters; and when the air guiding door is in a closed state, the air guiding door is controlled to conduct first-angle resetting. Accordingly, the closing state of the air guiding door is judged, and if the air guiding door is in the closed state, the resetangle is set as the first angle instead of setting of the reset angle as the sum of the maximum aperture and the interference angle of the air conditioner air guiding door. Accordingly, the closing and jamming state time of the air guiding door can be very short, so that the problems that due to closing and jamming, an air guiding door is stressed and deforms, the service life of an air guiding motor is shortened, and reliability of the air guiding motor is lowered are solved.

The invention provides an air guiding door power-on reset control method and device and an air conditioner. The control method comprises the steps of obtaining open/closed state data of an air guidingdoor; according to the open/closed state data, judging the open/closed state of the air guiding door; and when the air guiding door is in the closed state, controlling the air guiding door to conductfirst angle reset. In this way, the closed state of the air guiding door is judged; if the air guiding door is in the closed state, a rest angel is set to be a first angle instead of the sum of the maximum open degree and an interference angle of the air guiding door of the air conditioner; and therefore, the closed stuck state of the air guiding door lasts for a short time, and furthermore, theproblems that due to the fact that an air guiding door is stuck in the closing process, the air guiding door is stressed to deform, the service life of an air guiding motor is shortened, and reliability is lowered are avoided.

A control method for a lithium ion secondary battery includes performing a charging step of charging the lithium ion secondary battery with a predetermined quantity of electricity when the battery voltage of the lithium ion secondary battery has decreased to a lower limit battery voltage that is set at a value that falls within a range higher than (B−C) V and lower than or equal to (B−C+0.2) V where a maximum value of a positive electrode potential of a flat portion in a discharge positive electrode potential curve is B (V) and a negative electrode dissolution potential is C (V). It is possible to suppress a dissolution of a negative electrode current collector of the lithium ion secondary battery to prevent the service life of the lithium ion secondary battery from shortening because of an internal short circuit.

The invention discloses a hydrotreatment method for coal tar. The method disclosed by the invention comprises the following steps of: pumping coal tar which is high in the contents of impurities, colloid, asphaltene, oxygen element and the like into a prehydrogenation reactor, and then performing hydrogenation pre-treatment; filtering to separate out tiny impurities suspended in the generated oil; sequentially performing hydrodemetallization reaction and deep hydrofining reaction; separating out water and light-weight components from the material flow generated by the reactions, and conveying the water and the light-weight components in a hydrocracking reactor; and then cutting out gasoline fraction, diesel oil and hydrocracking tail oil via a distillation device, wherein a magnetic catalyst is filled in the prehydrogenation reactor, and the operation is performed by means of a magnetically stabilized bed. Compared with the prior art, with the adoption of the method disclosed by the invention, the long-period stable running of the device can be ensured.

The invention relates to the technical field of vehicle fittings, and especially relates to a faucet lock, and a bicycle, an electric bicycle, and a motorcycle using the lock. The faucet lock comprises a lock bracket and a lock disk, and also comprises a power source, a push rod, a locking elastic element, and a release elastic element. The push rod is slidably arranged on the lock bracket. The power source is arranged on the lock bracket, and is connected with one end of the push rod in a transmission manner. The power source is used to drive the push rod to move toward a direction away from or close to the lock disk. The locking elastic element and the release elastic element are arranged between a lock bolt and the push rod. The locking elastic element is used to drive the lock bolt to move toward a direction close to the lock disk. The release elastic element is used to drive the lock bolt to move toward a direction away from the lock disk. When the lock bolt is stuck, since the lock bolt and the push rod are two components, the power source would continuously drive a sliding block to move toward a direction away from or close to the lock disk, and the release elastic element or the locking elastic element continuously deform in an elastic manner, so as to prevent the power source from being stuck and prevent service life of the power source from being impacted.