116results about How to "Increase the effective working area" patented technology

The invention relates to a magneto-rheological damper, in particular to a multistage extrusion-type magneto-rheological damper. The multistage extrusion-type magneto-rheological damper is suitable for the vibration isolation of an engine or other equipment. The damper comprises an upper end cover, an outer cylinder body, a piston rod, a sealing ring, a sealing bolt, a working cavity, a lower end cover and a piston head, and is characterized in that the damper also comprises a magnetic-isolation sleeve, a coil, an upper spacing spring, an auxiliary piston head, an inner cylinder body and a lower spacing spring, wherein the working cavity is divided into an inner working cavity and an outer working cavity by the inner cylinder body; the working cavity is filled with magneto-rheological liquid; the auxiliary piston head and the piston head connected to the piston rod respectively extrude the magneto-rheological liquid back and forth in the two working cavities to generate radial flowing so as to generate damping force; and the coil is arranged between the outer cylinder body and the magnetic-isolation sleeve to provide a magnetic field so as to regulate the magnitude of the damping force in real time. The output force of the multistage extrusion-type magneto-rheological damper is much more than that of a common magneto-rheological damper, and especially, the impact generated when the equipment is greatly and intensively vibrated under the severe environment can be avoided. The multistage extrusion-type magneto-rheological damper has the advantages of reasonability in design, simple construction, high efficiency, high response speed, high working reliability, good vibration damping effect and long service life.

The invention provides a built-in metal vibrator vibration and noise reduction dynamic vibration absorber structure of a steel rail. The structure is arranged on the two sides of a steel rail web between two adjacent fasteners and comprises coating body protecting layers, elastic damping bodies and metal mass bodies. Each elastic damping body is tightly attached and fixed to the steel rail and comprises a first elastic damping body and a second elastic damping body which are stacked and fixed into a whole, wherein the hardness of each first elastic damping body is larger than that of each second elastic damping body. Each metal mass body is made of multiple wriggling wavy metal plates which are nested in the corresponding elastic damping body at intervals. Each coating body protecting layer covers the exposed face of the corresponding elastic damping body. By the adoption of the structure, on the premise that the requirement for the sufficient strength of a damping material is met, thedamping effective working area is increased in a wriggling mode, the vibration transmission attenuation rate is increased, the damping material has two different degrees of hardness so as to meet thevibration reduction requirements in different frequency ranges, rail traffic operation noise can be effectively reduced from the position of a noise source, and utilization of the structure does notaffect maintenance of rail traffic original infrastructures and rails.

A design method of a wireless power transmission device includes: step A, under the condition that a receiving device and a transmitting device are aligned completely, measuring intrinsic electric parameters of each coil of the wireless power transmission device and measuring mutual inductance of each two coils to record as a coupled matrix M0; step B, under the condition that the receiving device deflects to a maximum designed deflection value relative to the transmitting device, remeasuring the intrinsic electric parameters of each coil of the wireless power transmission device and remeasuring mutual inductance of each two coils to record as a coupled matrix M1; step C, under the condition that the receiving device and the transmitting device are aligned completely, setting up a nonlinear programming optimization model by taking a maximum efficiency and an assigned power as objective functions, and working out an optimal capacitance value Copt0 of a resonance compensation capacitor by iteration; step D, in consideration of influences of deflection of relative positions of the receiving device and the transmitting device, optimizing the target functions to set up a new nonlinear programming model, and solving the optimization problem by taking the Copt0 as an initial value for iteration to obtain a final capacitance value Copt1 of the resonance compensation capacitor.

A dye-sensitized solar cell module, which belongs to the field of photoelectric conversion device technology, comprises a first electrode and a second electrode arranged correspondingly, wherein the peripheries of the first and the second electrodes are sealed to form a sealed cavity, and the cavity is filled with electrolyte; a nano porous semiconductor thin film soaked with a photosensitive material is arranged on the side of the work region of the first electrode; a catalyst layer is arranged on the side of the work region of the second electrode; and at least one of the first and the second electrode is transparent. The sealed structure is characterized in that one or more pinholes are provided on at least one electrode and sealed at the periphery; and a working current is guided to the electrode from the pinholes. The invention can increase the effective working area of the solar cell and lower the permeable corrosion possibility of electrolyte by obviating the protection of a metal gate electrode, thus greatly improving the safety factor of the solar cell and widening the selection range of sealing materials.

The invention discloses a round silicon thin film solar cell and a fabrication method thereof. The cell is composed of cell units connected in series, and takes a transparent substrate as a substrate, comprises a front electrode layer, a silicon thin film layer, a back electrode layer and a back paint layer which are stacked up in sequence. The round silicon thin film solar cell is characterized in that working faces of the cell units are formed by laser scribing, an external envelope takes an arc shape, a working face inside the cell is composed of n serially connected cell units which have equal effective area, n is not less than 2, at least two shielding lines and a laser scribing line or a dot-and-dash line which connects a positive electrode and a negative electrode are arranged between the positive electrode and the negative electrode of the cell, and the width between the positive electrode and the negative electrode is 0.03-0.10mm. The fabrication method adopts advanced laser marking technology, can scribe the cell units with fan-shaped or irregular figures, has high precision, and causes the width of an invalid region inside the solar cell to decrease from 0.5-1.8mm to 0.03-0.20mm, thus enlarging the effective working area of the cell.

The invention relates to a structure and a method for improving the current crowding effect of a microwave power transistor emitter region. The structure is characterized in that the emitter region isprovided with a polysilicon thin-layer distribution resistor which is parallel to the surface of a silicon substrate and an emitter junction for balancing a distribution resistor of a base region below the emitter region and improving the voltage consistency of the emitter junction so as to improve the current crowding effect of the emitter region; and the thin-layer distribution resistor of theemitter region is made of doped polysilicon and acquires a resistor value of the needed doped polysilicon resistor by controlling the thickness and the side undercutting depth of silicon dioxide forming a window of the emitter region. The invention has the advantages that the polysilicon thin-layer distribution resistor parallel to the surface of the silicon substrate and the emitter junction is led in the emitter region; and when a current of the emitter region flows by the distributed resistor, a generated voltage drop compensates the voltage drop of a base current on an inner base resistor,reduces the voltage drop differences of the emitter junction in different positions, improves the current crowding effect, expands the effective working area of the emitter junction and improves themicrowave output power of a chip unit area.

The invention belongs to support structures, in particular to a folding support plate. The folding support plate comprises a piston which is connected with a vehicle, two or more pull rod sliding bases are arranged on the side wall of the piston and can be slid up and down along the side wall of the piston, the pull rod sliding bases are hinged with pull rods, a base is arranged below the piston, a ball head of the piston is fixedly connected on the top surface of the base, slopes are arranged on the positions which are corresponding to the pull rods and arranged on the side wall of the base, lugs are arranged on the side wall below the slopes, folded plates are fixed on the lugs through rotary shafts and hinged with the pull rods through lower shafts, and the folded plates can be rotated by taking the rotary shafts as the shafts under the action of the pull rods. The folding support plate has the effects that: 1. the effective working area of the support plate can be increased through the folding mode, thereby allowing the vehicle to carry the larger support plate under the situation of not increasing the additional space, having no need of carrying a bulky stow wood and saving manpower and material resources; and 2. the support plate can realize the automatic one-time leveling of the ground slope by relying on the sliding bases.

The invention discloses a high full-voltage large-flow centrifugal blower with a slant-wheel disk front-bent impeller, and belongs to the technical field of blowers. The high full-voltage large-flow centrifugal blower is characterized in that: the high full-voltage large-flow centrifugal blower consists of a motor, a support, a rear side plate, the impeller, an exhaust volute, a front side plate, a conical arc inlet guide pipe, a protective screen and an inlet fairing, wherein the impeller has the slant wheel disk structure; the slant wheel disk is that the wheel disk is not vertical to a motor shaft in a front view; the inlet fairing is arranged on a hub; the impeller adopts 36 circular arc long blades; the mold line of the exhaust volute adopts a logarithmic spiral form; the front side plate is provided with a large hole; and the rear side plate is provided with a small hole. The centrifugal blower meets the running requirements of a cooling fan on high full-voltage and large flow; the special slant wheel disk also improves the air flowing condition inside a ventilator, so the flow loss and noise are all reduced; and compared with the traditional similar ventilators, the centrifugal blower has the advantage of simpler processing and manufacturing due to a small number of the blades of the impeller.

The invention discloses a high total pressure large-flow wheel disk side beveling type back-ward impeller fan, belonging to the technical field of fans. The fan is characterized by being composed of an angle iron flange, a wind scooper, an air intake barrel, a rotor cap, an impeller, the outer barrel of an air outlet barrel, the inner barrel of the air outlet barrel, a guide vane, a motor, a bracket and the like, wherein the inlet of the fan is provided with the wind scooper and extends into the inlet part of the impeller; the hub of the impeller is additionally provided with the rotor cap; the outlet of the impeller, i.e. the edge of the wheel disk, adopts a bevelling structure, and the impeller vane has two types of linear type and circular arc type; the joint assembly point of the air intake barrel and the air outlet barrel of the impeller, i.e. the wheel cover side of the impeller outlet, is provided with the baffle; the isopachous guide vane is welded between the inner barrel of the air outlet barrel and the outer barrel of the air outlet barrel; the side of the inner barrel and outer barrel of the air outlet barrel, which is near the wheel disk of the impeller, is opened; and the air outlet of the fan is divided into a main runner air outlet and a motor cooling flow air outlet. The invention not only satisfies the requirements of high total pressure and large flow operation of the cooling fan but also improves the air flowing situation in the fan to lower flowing loss and noise.

The special gamma spectrograph for moon exploration is provided with crystal scintillator connected to photomultiplier tube and data acquisition circuit successively and features that there are main detector and anticoincidence detector with scintillator connected to one other photomultiplier tube and that the photomultiplier tube of both the main detector and the anticoincidence detector are connected to the data acquisition circuit simultaneously. The data acquisition circuit has microprocessor. The novel gamma ray detection instrument has high sensitivity, low cost, optimal background radiation inhibiting effect and increased detector effective area. The optimal scheme has CsI (Ti) crystal in anticoincidence detector and crystal scintillator of several crystals adhered together.

The invention belongs to the field of vibration and noise reduction, and particularly relates to a constraint damping device capable of increasing the structure damping and achieving a good vibration and noise reduction function. A constraint damping noise reduction plate comprises a connecting plate and a constraint plate, wherein a connecting plate splicing rib and a constraint plate splicing rib are correspondingly arranged at spliced parts of the connecting plate and the constraint plate respectively; at least one of the connecting plate splicing rib and the constraint plate splicing rib is provided with a positioning groove in the mutually matched side face; an elastic isolating strip made of an elastic material is also arranged between the connecting plate splicing rib and the constraint plate splicing rib; the elastic isolating strip is partially embedded into the positioning groove; the connecting plate and the constraint plate are connected through an elastic isolating strip splicing buckle; the elastic isolating strip and a damping layer keep the connecting plate and the constraint plate elastically isolated. The constraint damping noise reduction plate is simple in structure and convenient to use, and can better block own vibration transfer, so as to achieve a better vibration and noise reduction effect.

The invention belongs to the fields of new energy and power generation, and relates to an overhanging type rotating generator based on piezoelectric cantilever mutual excitation. A left end cover and a right end cover are arranged at two ends of a casing provided with a balancing weight, first piezoelectric vibrators are connected between the left end cover, the right end cover and the casing, wherein bearings are embedded in the left end cover and the right end cover in a pressing mode, a rotating shaft provided with a web and a wheel edge is arranged on the left end cover and the right end cover through the bearings, and second piezoelectric vibrators are fixed on two sides of the wheel edge, the end portion of each first piezoelectric vibrator and the end portion of each second piezoelectric vibrator are respectively provided with a magnet, an inner ring of an electric brush and an outer ring of the electric brush are fixed on the rotating shaft and the right end cover respectively, the first piezoelectric vibrators and the second piezoelectric vibrators are connected with the outer ring of the electric brush and the inner ring of the electric brush through a first wire set and a second wire set, and the inner ring of the electric brush is connected with a binding post on a connection disc through a third wire set. The overhanging type rotating generator based on piezoelectric cantilever mutual excitation has the advantages that the generator does not need to be externally supported and fixed, the formed generator is an independent part, a rotating body structure does not need to be changed, and the generator is convenient to install and maintain, high in reliability and strong in power generating capacity and rotating speed adaptability.

The invention belongs to the field of alloy manufacturing, and particularly relates to a wear-resistant corrosion-resistant multi-element manganese-aluminum bronze brazing alloy and a preparation method thereof. The wear-resistant corrosion-resistant multi-element manganese aluminum bronze brazing alloy is prepared from the following components in parts by weight: 7-10% of Al; 8-11% of Mn; 1.5 to3.0% of Fe; 1.5 to 2.5% of Ni; 0.005-0.03% of B; 0.05 to 0.1 of Y; 0.08-0.20% of La, and the weight ratio of the three elements of B to Y to La is 1: 10: 15-1: 3: 6, and other impurities are less thanor equal to 0.5 percent. The balance is Cu. The wear-resistant corrosion-resistant multi-element manganese-aluminum bronze brazing alloy disclosed by the invention is composed of Al, Mn, Fe, Ni, B, Y, La and Cu, the casting temperature is equal to or lower than 1050 DEG C, and the mechanical property is good. The alloy material is used for cladding an inner wall of a cylinder in a hydraulic support, has bright surface, less deformation, hardness of more than HB240, good wear resistance and corrosion resistance, the operation up to now has always been 2 times of the life of the original material, and the alloy material is still normally used.

The invention relates to a method for integrating an internal humidifying proton exchange membrane fuel cell. The internal humidifying proton exchange membrane fuel cell comprises at least two groups of fuel cell stacks and a central current-collecting plate. The fuel cell stacks comprise a humidifying section and a power-generating section. The fuel cell stacks are arranged in the front / back / left / right positions or upper / bottom positions on two sides or on the same side of the central current-collecting plate. The humidifying section of the fuel cell stack is arranged close to the central current-collecting plate. An air inlet, a hydrogen inlet and a cooling water outlet are formed on the current-collecting plate. The air and the hydrogen enter the humidifying section from the central current-collecting plate, further enter the power-generating section after being humidified, then flow out of an end plate at the tail end of the power-generating section. The cooling water flows through a rear current-collecting end plate at the tail end of the power-generating section, cools the power-generating section by means of heat transfer, further flows into the humidifying section to humidify the air and the hydrogen therein, and finally flows out of the central current-collecting plate. Compared with the prior art, the internal humidifying proton exchange membrane fuel cell has the advantages of high effective working area, compact structure, etc.

A fan blade wheel comprises blades (1) and a hub (2), wherein the blades (1) are distributed on the hub (2), each of the blades (1) is provided with a wide outer chord (13) and a narrow inner chord (14), the blade (1) positioned at the position of the outer chord (13) is provided with a fairshaped flap (15) which begins to extend to the rear end of the outer chord (13) from the position where the blade tip extends into 3%-30% of the length of the outer chord (13), and the rear edge (12) of each of the blades (1) is in a sawtooth shape. The fan blade wheel is characterized in that the inner chord (14) comprises a first inner chord (141) and a second inner chord (142), wherein a concave portion (16) is arranged on the surface of the blade (1) close to the second inner chord (142), the back surface at the bottom of the concave portion protrudes outwards from the other surface of the blade, and a connection mechanism connected with the hub (2) is arranged on the concave portion (16). The fan blade wheel has the advantages of being reasonable in structural design, high in operation stability, long in service life and good in application effect. By means of the fan blade wheel, the strength of the blades is high, energy is saved, and noise is low.

The invention relates to a blueberry picking and sorting apparatus and a working method, and belongs to the technical field of planting machinery and equipment. The blueberry picking and sorting apparatus and the working method are in particular applicable to picking and preliminary sorting of dwarf blueberries in mountains. The apparatus includes a bottom frame and a machine frame arranged on thebottom frame. The machine frame is equipped with a picking device and a sorting device. The picking device is used for picking fruits. A collection bin is arranged on the bottom frame. The picked fruits are placed in the collection bin, and then sent to the sorting device by a conveyor belt for multi-level sorting. With the apparatus of the invention, the efficiency of blueberry picking operationcan be improved, the artificial labor intensity can be reduced, and multiple damage to blueberry vines can be reduced.

The invention discloses a shearing mode magnetorheological damper comprising an inner barrel, an outer barrel and a telescopic barrel located between the inner barrel and the outer barrel. The telescopic barrel and the inner barrel as well as the outer barrel are sealed by seal rings so as to form a closed cavity. The cavity is filled with magnetorheological fluid. A telescopic rod moving along with the telescopic barrel is arranged in the telescopic barrel. A coil base is fixed to the tail end of the telescopic rod. An annular coil groove is formed in the outer wall of the coil base. A coil is wound in the coil groove. A magnetic field is produced after the coil is electrified. Working clearances are reserved between the telescopic barrel and the inner barrel as well as the outer barrel.The magnetic field acts on the magnetorheological fluid in the working clearances. A small hole is formed in the bottom of the outer barrel. A compensating barrel is installed outside the small hole.The shearing mode magnetorheological damper has significant low-frequency large-damping characteristics, when a vehicle turns, quite large antiroll damping force can be provided, thus rolling of a vehicle body is effectively restrained, and curve trafficability and driving safety of the vehicle are improved.

The invention discloses an electric dry oven for a Chinese herbal medicine. The electric dry oven comprises a box body, a door and a temperature controller, wherein a hot air chamber consisting of heat insulation plates and an insulation plate is arranged in the middle in the box body; an air blower is arranged on the top of the hot air chamber; air outlets are uniformly formed on the heat insulation plates on the left side and the right side of the hot air chamber; and the insulation plate is provided with a plurality of electrothermal tubes from top to bottom. By the electric dry oven, the shortcomings of one-directional heat cycle, non-uniform heating range and non-uniform drying degree in the prior art are overcome; and the electric dry oven has the characteristics of low energy consumption, low cost, high efficiency and convenience for maintenance and regulation.

The invention relates to a sensor, in particular to a subcutaneous tissue interventional type needle glucose sensor and its preparation method. The sensor comprises a base, the bottom of the base is provided with a working electrode, a counter electrode and a reference electrode, and the working electrode, the counter electrode and the reference electrode form a split needle three-electrode system. The subcutaneous tissue interventional type needle glucose sensor and its preparation method have the advantages that the structure is compact, operating performance is improved and the service life is prolonged.

The invention discloses a closed-cycle circular yellow wine brewing method by squeezing yellow wine lees, and belongs to the technical field of yellow wind brewing. The method comprises the following steps: extruding the yellow wine lees after adding enzyme or not, mixing with yellow wine raw materials subjected to cooking pre-treatment of the traditional yellow wine brewing process, and then fermenting, wherein the obtained yellow wine lees as the secondary raw material are recycled according to the steps so as to form a well-behaved closed-cycle circular process. According to the method disclosed by the invention, the utilization rate and the liquor yield of the yellow wine lees are increased, the prepared yellow wine is unique in refreshing taste and rich in nutrient, and the high-valued recycling of the lees waste is realized.

The invention relates to a method for improving the cavitation-erosion performance of a centrifugal pump. According to the method for improving the cavitation-erosion performance of the centrifugal pump, through the reducing of a blade head impact angle, the impact of a blade and incoming flow is reduced, the impact condition of impeller head liquid flow and the blade is improved, and the adaptation to the incoming flow can be better achieved. The width of an impeller channel is increased, the curves of a front cover plate and a back cover plate are adjusted, the impact loss due to the fact that the liquid flow is absorbed into the impeller from an outlet position is reduced, the effective working area of the centrifugal pump is improved, and the energy waste is reduced. Through the above improvement, the speed of fluid in the pump is more even, the phenomenon of over low local pressure is improved, and therefore the cavitation-erosion performance of the centrifugal pump is improved.

The invention discloses a spiral hole way magnetorheological mud damper. Cylinder sealing covers (2) are arranged at two ends of a cylinder shell (4) of the damper; a piston (10) is arranged in the cylinder shell (4); two ends of the piston (10) are respectively connected with pull rods (1); the outer ends of the pull rods (1) penetrate through the cylinder sealing covers (2); and a magnet exciting coil (6) is arranged at the periphery of the cylinder shell (4). A spiral hole way (11) is formed in the piston (10); cavities (13) are respectively formed between the piston (10) and the cylinder sealing covers (2) at two ends of the cylinder shell (4); and magnetorheological mud is filled in the cavities (13) and the spiral hole way (11) of the piston (10). A magnetorheological mud channel ofthe spiral hole way magnetorheological mud damper is positioned in the piston, and an included angle thereof with a magnetic field is large to achieve good control effect; the magnet exciting coil iswound outside a cylinder without directly contacting with the piston and the magnetorheological mud to achieve convenience to replace and good durability; and the magnet exciting coils with differentturns numbers can be replaced according to the demands of actual conditions to achieve wide applicability. The magnetorheological mud is high in shearing yield strength and excellent in settlement resistance.

The invention provides a single-control vehicle brake device. The single-control vehicle brake device comprises a clutch hydraulic working cylinder, a brake hydraulic working cylinder, an integrated master pump and a single-control pedal, wherein the integrated master pump comprises a first oil cylinder and a second oil cylinder; the single-control pedal is connected with the integrated master pump; the second oil cylinder is connected with the clutch hydraulic working cylinder through a clutch oil circuit; the first oil cylinder is connected with the brake hydraulic working cylinder through a brake oil circuit; the first oil cylinder is equipped with an oil cup; the brake oil circuit is equipped with a control system for controlling on / off of the brake oil circuit; and the control systemis equipped with a control oil circuit. By utilizing the technical proposal, a brake pedal and a clutch pedal in the prior art can be integrated into a whole, namely the single-control pedal, and thesingle-control pedal and an integrated master cylinder work together to achieve the purposes of brake and clutch, thus misoperation can be effectively avoided and driving safety of a vehicle can be improved in the mode of separating the single-control pedal from a fuel pedal; and the single-control vehicle brake device is only provided with two pedals, thus being simple in operation.

The invention discloses a transparent Ga2O3 p-i-n heterostructure solar-blind ultraviolet light detector and a preparation method thereof. A Ga2O3 film is prepared, the structure of the solar-blind ultraviolet light detector is designed, and the detector is formed by stacking and assembling a substrate, a p-type NiO film, an i-layer Ga2O3 film, an n-type boron and gallium co-doped zinc oxide (BGZO) film and an Au electrode. Compared with a commercially used photomultiplier, the detector provided by the invention is simple in structure, excellent in performance, safe, non-toxic and suitable forlarge-scale solar-blind ultraviolet light detectors. Meanwhile, the width of a depletion region is expanded due to the design of the p-i-n type structure, the effective working region of photoelectric conversion is enlarged, and the response speed of the device is increased.

The invention discloses an impeller, a draught fan and a motor; the impeller (100) comprises a roughly-conical hub (11) and multiple blades (12) which are arranged on the outer circumference of the hub (11) at intervals in the circumferential direction; each blade comprises a front edge face on the inlet end and a rear edge face on the outlet end, the blades are flat plate twisted blades, and the blade front edge segments and the blade rear edge segments incline in a rotary twisted manner in the opposite directions in the circumferential direction; according to the impeller, the shape of the blades is optimized and designed, particularly, due to the fact that the blade front edge segments and the blade rear edge segments incline in the rotary twisted manner, convex faces and concave faces are formed on the same side faces of the blade front edge segments and the blade rear edge segments, fluid losses of the inlet ends and the outlet ends of the blades can be effectively reduced, the effective work range of the impeller is widened, and the work performance of the impeller is greatly improved.

The invention relates to the technical field of a heating rod, and discloses a novel double-hole carbon fiber heating rod. The novel double-hole carbon fiber heating rod includes a flat bottom quartz socket tube, wherein an insulation rubber cap sleeves the inlet of the flat bottom quartz socket tube; double-hole quartz tubes internally sleeve the flat bottom quartz socket tube; the upper and lower ends of each double-hole quartz tube are each clamping-sealed with a double-hole upper end clamping seal area and a double-hole quartz tube tail part clamping-seal area; the two ends, on which the double-hole upper end clamping seal area and the double-hole quartz tube tail part clamping-seal area arranged, of the double-hole quartz tube, are each sleeved with an insulation fixed plug; the internal of the double-hole quartz tube is divided into left and right tubes by the cutting opening; and the carbon fiber heating filaments in one of the double-hole quartz tube is penetrated through the cutting opening to the other double-hole quartz tube. The novel double-hole carbon fiber heating rod utilizes the single terminal wiring mode and can fully puts the whole heating rod in water, thus increasing the effective working area, reducing the volume of the heating rod, saving the resource, being quick and economic, and saving the cost.

The invention discloses a magnetorheological mud damper. The magnetorheological mud damper consists of a barrel-shaped cylinder body with a sealing cover, a piston located in the cylinder body and an iron core embedded in the piston and mutually accorded with the piston. The cylinder body is filled with magnetorheological mud. Magnet exciting coil is wound on the iron core. A through hole structure I penetrating through the iron core is arranged in the position, in the vertical direction of magnetic field generated by the iron core and the magnet exciting coil, of the iron core. The through hole structure I communicates with a through hole structure II of the piston to form a magnetorheological mud channel. The two sides of the piston are symmetrically provided with pulling rods. The pulling rods extend out of the cylinder body, and the connection position of the pulling rods and the sealing cover of the cylinder body is sealed. The magnet exciting coil on the iron core is connected with an outside power source through hole ducts in the pulling rods. According to the magnetorheological mud damper, the magnetorheological mud channel is located in the piston, the adjusting and controlling effect is good, the iron core can be replaced, the mechanical property of the damper can be adjusted, the iron core is not directly forced, the durability is good, the shear yield strength of the magnetorheological mud is high, and the precipitation-resistance performance is good.

The invention relates to the technical field of heat pump units, in particular to a heat pump unit and a gas-liquid two-phase uniform distribution method. The heat pump unit comprises a compressor, an oil separator communicating with the compressor, a condenser communicating with the oil separator, and a parallel two-phase flow distribution type evaporator communicating with the compressor; a first ball valve, a drying filter, an electronic expansion valve and a second ball valve are sequentially arranged between the condenser and the parallel two-phase flow distribution type evaporator to form a first loop; an oil return angular ball valve and an oil return filter are sequentially arranged between the oil separator and the compressor to form a second loop; an oil return electromagnetic valve, a jet pump and a compressor input end ball valve are sequentially arranged between the parallel two-phase flow distribution type evaporator and the compressor; and the jet pump communicates with the condenser to form a third loop. The heat pump unit has the beneficial effect that uniform distribution of expansion valve throttling gas-liquid two-phase refrigerants can be achieved.

The invention provides a flexible sensor. According to the flexible sensor provided by the invention, insulating reinforcing layers are added to the two sides of a flexible substrate layer, and the thicknesses of the substrate layer and the insulating reinforcing layers are accurately controlled, so that the flexible substrate with more excellent performance is prepared, and the flexible substrate can remarkably improve the adhesive force to a conductive layer / electrocatalytic layer, is soft in texture and rich in toughness, improves the overall bending resistance, and is more suitable for preparing the flexible sensor partially implanted into a human body. The flexible base material can be made into a single-piece double-sided flexible electrode, photoetching or screen printing and other technologies are not needed, layer-by-layer assembly insulation treatment is not needed, multi-piece splicing is not needed, compared with a single-piece single-face multi-electrode, the effective working area is larger, the service life of the sensor is prolonged, long-term implantation and use are facilitated, the processing technology can be effectively simplified, the production cost can be reduced, meanwhile, the implantation wound can be effectively reduced through the single-chip electrode structure, and the further prepared flexible sensor is more stable in detection result, small in batch-to-batch difference and high in sensitivity.