535results about How to "Reduced sealing requirements" patented technology

The invention provides a proton exchange membrane water electrolysis device which is a small hydrogen / oxygen generating device. The proton exchange membrane water electrolysis device comprises two anode plates, a negative bipolar plate and a membrane electrode between two anode plates and the negative bipolar plate; moreover, an anode end plate and an insulation spacer are sequentially arranged at two ends of the anode plate, sealing gaskets are respectively arranged between the anode plate and the membrane electrode and between the membrane electrode and the negative bipolar plate, and screw rods and nuts are used for fastening into the sealing gaskets, the anode plate, the membrane electrode and the negative bipolar plate into one body. The adopted working medium is pure water, the proton exchange membrane water electrolysis device has the characteristics of mild working conditions and high electrolytic efficiency, the purity of the produced gas is high, the operation is simple, and the proton exchange membrane water electrolysis device can be combined with a solar cell and a fuel cell to form a high-efficiency renewable energy utilization system.

The invention relates to the field of liquid cooling, and provides an integrated liquid-cooling heat dissipation case. The integrated liquid-cooling heat dissipation case comprises a case body, a circuit board and a liquid-cooling heat dissipation system. A closed space composed of a plurality of wall boards is formed in the case body. The circuit board is arranged in the case body, and one or more heat emission devices are arranged on the circuit board. A liquid storage groove is formed in the bottom of the case body and used for storing cooling liquid. The liquid-cooling heat dissipation system comprises a pipeline, a heat dissipation mechanism, a pumping mechanism and a spraying mechanism. The pumping mechanism is used for pumping the cooling liquid in the liquid storage groove into the pipeline, the spraying mechanism is connected to one end of the pipeline and used for spraying the cooling liquid into the case body or directly spraying the cooling liquid to the heat emission devices, and the heat dissipation mechanism is arranged at the position, in front of the spraying mechanism, of the pipeline and used for transferring heat of the cooling liquid to the outside of the case body. By the adoption of the integrated structural design, the integrated liquid-cooling heat dissipation case can be used in hostile environments and is convenient to carry, reasonable in design, light in weight, high in heat exchange capability and low in cost.

The invention discloses a supercritical fluid dyeing machine. A horizontal type cylindrical dyeing kettle, a magnetomotive cloth lifting wheel, a spray cavity, a wave-shaped cloth guide passage in the dyeing kettle, a heat exchanger, a dye kettle or / and an entrainer kettle and a circulating pump are used as main components to form a dyeing circulation system; and both ends of a fan are respectively connected with fluid outlets under the spray cavity and the dyeing kettle and form a cloth feeding system together with the magnetomotive cloth lifting wheel, the spray cavity and an operating opening. A rope-shaped fabric realizes circulated dyeing under the common action of the fluid in the magnetomotive cloth lifting wheel and the spray cavity, and the fluid in the dyeing kettle carries out forced circulation by the circulating pump. The dye and the fluid can realize recycling by a separating and recycling system after dyeing, and the whole dyeing circulation system and the separating and recycling system are clean to achieve the requirement during color changing and dyeing. The supercritical fluid dyeing machine can realize anhydrous dyeing processing on the fabric in a loosening type tension-free state without the production and discharge of pollutants, and has the characteristics of ecology, environmental pollution, wide adaptability of fabric variety, and the like.

The invention relates to a method for adopting an industrial robot to carry out the ordinary sand mold milling processing, which pertains to the filed of the cross technology of casting, numeric control processing and the industrial robot. The steps of the method of the invention are that: a tool and a planned milling path are selected according to the shape of a sand mold to be processed, the generated NC code is translated into a control code of the robot according to a motion model of the industrial robot, thus realizing the gesture control of the robot during the processing process, carrying out the milling of a sand lump and finally carrying out the post-processing of the sand lump after the processing. Compared with the existing traditional casting mold processing method, the processing method of the invention can save the manufacturing link of the mold, reduce the processing procedure, shorten the production period and reduce the production cost; compared with the machine tool-based sand mold milling processing method, the processing method of the invention has larger processing range and higher processing flexibility, in particular to a motion guide track without the need of carrying out the strict sand control protection. The method of the invention is especially applicable to the single and small-batch processing and manufacturing of the large-scale sand mold.

The invention provides an electronic device utilizing liquid cooling heat radiation. The electronic device comprises a shell, a circuit board and a liquid cooling heat radiation module. The circuit board and the liquid cooling heat radiation module are arranged in the shell. The circuit board is provided with one or multiple heating devices. The liquid cooling heat radiation module comprises a liquid inlet pipeline and nozzles which are arranged on the liquid inlet pipeline. Cooling liquid is conducted into the shell from the outside of the shell by the liquid inlet pipeline. Cooling liquid is sprayed in a space formed by the shell by the nozzles to cool the heating devices. Cooling liquid steam after heat exchange is mixed with cooling liquid sprayed by the nozzles so that the cooling liquid steam is enabled to be condensed. Compared with an existing direct liquid cooling heat radiation device, the electronic device utilizing liquid cooling heat radiation has advantages of being low in demand for cooling liquid, low in weight, simple in system structure, high in heat exchange capability and high in environmental adaptability and has quite high application potential.

The invention discloses an engineering machine and a method for controlling the engineering machine. The engineering machine comprises an engine, a hydraulic pump, a hydraulic actuating mechanism and a control system, wherein the engine can drive the hydraulic pump which can supply high-pressure oil for the hydraulic actuating mechanism, the hydraulic actuating mechanism is used for driving corresponding components, the control system comprises an operating handle and a controller, and the hydraulic pump is a variable hydraulic pump; the controller can acquire the output power of the engine, external load and the adjustment range of the operating handle, and generate control signals according to a predetermined control policy; and the controller can adjust discharge capacity of the variable hydraulic pump through the control signals. The method for controlling the engineering machine comprises the following steps: firstly, acquiring the adjustment range of the operating handle, the external load and the output power of the engine; and secondly, adjusting the discharge capacity of the variable hydraulic pump according to actual working conditions. The engineering machine and the method for controlling the engineering machine can make load torque formed by the hydraulic pump matched with output torque of the engine.

In order to better and more efficiently assemble back contact solar cells into modules, the cell to cell soldering and other soldered connections are replaced by electro and / or electroless plating. Back contact solar cells, diodes and external leads can be first laminated to the module front glass for support and stability. Conductive materials are deposited selectively to create a plating seed pattern for the entire module circuit. Subsequent plating steps create an integrated cell and module metallization. This avoids stringing and tabbing and the associated soldering steps. This process is easier for mass manufacturing and is advantageous for handling fragile silicon solar cells. Additionally, since highly corrosion resistant metals can be plated, the moisture barrier requirements of the back side materials can be greatly relaxed. This can simplify and reduce the cost of the back side of the module.

The invention relates to an anchor rod / anchor cable with constant resistance and large deformation and a design method thereof. Aiming at the defects that the resistance of an existing anchor rod with large resistance is intermittently uncontinuous in the drawing process, the invention provides the anchor rod / anchor cable with constant resistance and large deformation. The product comprises a rod / cable body, a constant-resistance sleeve and a cutting tool, wherein the rod / cable body is in a ladder-shaped axial structural body and comprises a large outer diameter section and a small outer diameter section; the constant-resistance sleeve is in a cylindrical structure with one enclosed end and an opened end, and sleeves the large diameter section externally; the cutting tool is in an annular shape and is inserted in the external part of the small outer diameter section. The invention provides two specific structures, including a slotting way and a ridge bar type. The product provided by the invention can provide the design method of the anchor rod / anchor cable with constant resistance and large deformation, including the parameters of the design of slot depth h of the slotting type, the height h of the ridge bar type ridge bar, and a contact width b between the ridge bar and a knife edge. The design method is easy to realize the regulation of the consistent resistance and meet the demand of the working conditions on site.

The invention relates to the technical field of electroplating pretreatment, in particular to a process for carrying out vacuum cleaning, oil removal and wax removal by a modified hydrocarbon cleaner. The process comprises degassing ultrasonic cleaning, vacuum cleaning, vacuum steam flushing, vacuum drying and the like. A plurality of flows are carried out in the vacuum environment with a certain vacuum degree and are matched with a degassing ultrasonic cleaning and vacuum cleaning technology and the modified hydrocarbon cleaner. For the cleaning process, in the whole process, harmful substances of halogen and the like, such as trichloroethylene, methylene chloride, tetrachloroethylene and the like, cannot be used and additional drying equipment is not required. Particularly, the process has excellent cleaning effect on irregular articles with blind holes, joints, gaps, cracks and the like. Meanwhile, the defects of oil removal and wax removal of the conventional process are overcome.

A megawatt-level semi-direct driving wind generator comprises a wind wheel, a distance changer, a main axle, a speed accelerating box, a coupler, a generator, a cabin chassis, a bias motor and a control system. The chassis is fixed with the bias motor and the generator, the accelerating box is fixed with the side wall of the chassis, the accelerating box is first-stage planet accelerating gear box, and the motor is low-speed permanent magnetic three-phase synchronous generator. The invention can stabilize the transmission of transmitter, reduce impact, and reduce sealing demand or the like, with adjustable installed height, simple structure, high strength and accurate angle control on distance change as 0.1 degree, to output constant power.

The invention relates to a birotor self-powered damper based on magnetorheological elastomers. The birotor self-powered damper based on the magnetorheological elastomers comprises a power generating module, an energy module and a damping module which are integrated, the power generating module and the damping module are fixedly connected with a vehicle body, the power generating module is a birotor power generating device with a ball screw assembly as a driving part, the ball screw assembly drives dual rotors to rotate to generate power by means of up-and-down movement of the damping module when vehicle wheels meet road excitation, the electric energy is transmitted to the energy module to be stored, the energy module is provided with a battery and a controller, the battery is connected with the power generating module, the controller is connected with a vehicle control terminal, the damping module is a magnetofluid elastic device which comprises a piston and a piston rod, the piston rod is connected with the ball screw assembly, magnetofluid elastic components are arranged above and below the piston respectively, the magnetofluid elastic components are connected with the battery, and the battery is controlled by the controller to provide power for assigned magnetofluid elastic elements.

The invention relates to a cleaning agent for clearing away resins and soldering, comprising the following components in weight ratios: 20-60% alcohol-ether solvent, 0-5% rosin solvent, 0.001-0.01% corrosion inhibitor, 0.001-0.01% antioxidant, and a hydrocarbon solvent added to 100%. The cleaning agent has strong capability of dissolving resins, soldering and oil contaminations, and short in cleaning time, which only needs 10-15 min, and has no corrosion on an integrated circuit board; the used cleaning agent can be recycled through distillation; and more importantly, such an environment-friendly resin and soldering cleaning agent contains no halogenated hydrocarbons which are strong in toxicity and have damage influence on the atmosphere; therefore, the cleaning agent is a substitute product for the halogenated hydrocarbon cleaning agents.

The invention relates to a storage device and a refrigerator. The storage device comprises a drawer, a sealing device, a moisturizing module and a moisture adjustment device, wherein the moisturizing module is arranged at the sealing device and is used for improving or retaining moisture in a storage space; the moisture adjustment device controllably or operably changes the size of a gap between a moisturizing cover and the drawer so as to be matched with the moisturizing module to adjust the moisture in the storage space. Thus, according to the storage device, as the size of the gap between the moisturizing cover and the drawer is changed, the moisture adjustment range is large, and the structure of the storage device is simplified. When no gap exists between the moisturizing cover and the drawer, the inner part of the storage device retains the moisture corresponding to the fixed moisture permeable threshold value of the moisturizing module, and excessively high moisture is avoided. The invention further relates to the refrigerator which comprises the storage device and a box body, wherein at least one storage room is limited in the box body. The storage device can be taken out to be put in any storage room so as to provide the moisture-adjustable storage space for the refrigerator.

An extracorporeal blood processing system is disclosed which includes a variety of novel components and which may be operated in accordance with a variety of novel methodologies. For instance, the system includes a graphical operator interface which directs the operator through various aspects of the apheresis procedure. Moreover, the system also includes a variety of features relating to loading a blood processing vessel into a blood processing channel and removing the same after completion of the procedure. Furthermore, the system also includes a variety of features relating to utilizing a blood priming of at least portions of the apheresis system in preparation for the procedure. In addition, the system includes a variety of features enhancing the performance of the apheresis system, including the interrelationship between the blood processing vessel and the blood processing channel and the utilization of high packing factors for the procedure.

The invention relates to a cam-type axial rotary punching tool. The cam-type axial rotary punching tool comprises a rotation driving component and a punching component, wherein the rotation driving component comprises a driving shaft, and a rotation driving cylinder and a first cam block which are sequentially sleeved on the driving shaft and fixedly connected with each other; the punching component comprises a second cam block which is matched with the end surface of the first cam block, a first limiting structure in axial sliding connection with the second cam block, an elastic component sleeved on the driving cylinder, and a second limiting structure arranged at one end of the elastic component; the other end of the elastic component presses against the second cam block; and the driving shaft drives the first cam block to rotate through the rotation driving cylinder so as to drive the second cam block to move in the axial direction in the telescopic stroke of the elastic component for generating a punching acting force. The cam-type axial rotary punching tool can provide rotating and punching acting forces at the same time, has a relatively low requirement on sealing performance, and can be matched with a power drill for use.

The invention discloses a compressible rechargeable zinc-manganese battery and a battery-sensor integrated device based on the battery. The compressible rechargeable zinc-manganese battery comprises apositive pole, a negative pole and an electrolyte, wherein the negative pole is made from a zinc element based active material, and a positive pole active material is manganese dioxide; the electrolyte is a crosslinked polyacrylamide hydrogel electrolyte. The synthetic method for crosslinked polyacrylamide hydrogel electrolyte is as follows: 3-5 g of monomeric acrylamide, 25-35 mg of an ammoniumpersulfate initiator and 3-5 mg of N'N-dimethyl bis acrylamide are added into 15-25ml of deionized water, and stirring continues till clarification is achieved; then a clear solution is transferred to a glass watch glass and then is coated with tin foil paper, and reaction is executed at 50-70 DEG C for 50-70 minutes to obtain a hydrogel; finally, the hydrogel is fully soaked in 0.8-1.2 mol / L ofzinc sulfate and 0.05-0.15 mol / L of manganese sulfate electrolyte to obtain the crosslinked polyacrylamide hydrogel electrolyte. The battery can adapt to large compressive stress while maintaining energy storage performance, and flexibility and elasticity of an energy storage device can be achieved.

The invention relates to a bearing part cleaning device, in particular to a bearing part hydrocarbon cleaning device which comprises a main machine frame. The upper surface of the main machine frame is provided with a main conveying belt, a main transparent cover is arranged above the main machine frame, the inside of the main transparent cover is sequentially provided with an ultrasonic cleaning assembly, a spraying and rinsing assembly and a spraying and drying assembly, the tail end of the main machine frame is provided with an auxiliary machine frame, an auxiliary conveying belt is arranged on the auxiliary machine frame, an auxiliary transparent cover is arranged above the auxiliary machine frame, the inside of the auxiliary transparent cover is sequentially provided with a spraying rustproof assembly and a rustproof drying assembly, a vacuum ultrasonic cleaning tank is arranged in the ultrasonic cleaning assembly, a vacuum rinsing tank is arranged in the spraying and rinsing assembly, and a vacuum rustproof spraying tank is arranged on the spraying rustproof assembly, the main transparent cover and the auxiliary transparent cover are connected with a main air box and an auxiliary air box respectively, and the main air box and the auxiliary air box are used for absorbing mist. Manual work and automatic work are combined so that bearing part cleaning efficiency can be improved, requirements for sealing performance are lowered, and use adaptation and flexibility are improved.

The invention discloses an open-close deep-sea plug-and-pull photoelectric composite connector, which comprises a plug and a socket used for plug-and-match. The main body of the socket part is a socket opening and closing core, which is fixed on a rotating bracket through a hinge connection mode. When the plug and the socket are inserted, the socket opening and closing core can be opened under thepush of an umbrella-shaped curved surface of a plunger, the position of the largest opening angle is parallel to the central axis, and is connected with the photoelectric core inside the plug. The plug and the socket of the invention are respectively provided with a variable-volume bellows and a rubber bag as a pressure balancing device; The O-shaped sealing ring arranged in pairs is used for realizing the sealing in the inoperative state; The invention integrates optical signal and electric power transmission, fully considers internal and external pressure balance, has simple structure and simple insertion process, and can ensure reliable connection of deep water environment.

The invention discloses a hydraulic control mechanism for vanes. The hydraulic control mechanism for the vanes solves the problem that vanes can still extend to the outside of a rotor when the existing common vane pump does not work, so that the energy consumption of the vane pump is large. The vane pump structurally comprises a shell, a stator and a rotor, wherein the rotor is arranged in the stator in a rotatable mode, a plurality of vane grooves are radially arranged in the rotor, the vane grooves are internally provided with the vanes in a sliding way, and the vanes can partially extend out of the radial outside of the rotor, or retract into the rotor. A cavity is formed between the rotor and the stator, and is provided with a fluid suction zone, a fluid compression zone and a vane retraction zone, the shell is internally provided with a chamber communicated with the cavity, and the chamber is communicated with the outside through a fluid inlet and a fluid outlet. When the rotor is required to idle, pressure fluid is introduced into the chamber so as to enable the vanes to stably retract into the rotor.

The invention relates to a damping type rambling machine which comprises a treading plate, a connecting rod, a rotary shaft, a damper and a supporting frame. The treading plate is connected with the connecting rod, the connecting rod is connected with the rotary shaft, the rotary shaft is connected with the damper, and the damper is located inside the supporting frame and comprises a damping plate coaxial with the rotary shaft and shearing thickening liquid. The damping plate is a fan-shaped plate, one side of the damping plate is narrow, one side of the damping plate is wide, the surface of the damper protrudes, the shearing thickening liquid is filled in the damper, and the liquid level of the shearing thickening liquid is located under the rotary shaft. The damper is installed at the position of the rotary shaft, and the damping plate inside the damper and the shearing thickening liquid are utilized. When a person stretches her / his legs and takes high-speed exercises forward on the rambling machine, the damper has the damping effect on the motion and can simulate mountain climbing and other exercises; when the person draws back her / his legs and takes low-speed exercises, the damper has small resistance on the exercises, the person feels natural, the shearing thickening liquid can be thickened during high-speed exercise taking and be diluted during low-speed exercise taking, and good damping effect is played.

The invention discloses a pipe and plate connection piece. The pipe and plate connection piece comprises a circular connector at the upper part, a cavity in the middle part and a slot located at the lower part of the cavity, wherein the slot is internally and convexly provided with a row of square opening pipes; and the pipe and plate connection piece is mainly used for coupling air conduction channels in a core plate of a water discharging plate with a branch pipe of a vacuum pipeline when the plastic water discharging plate with double water discharging channels is used in a vacuum pre-pressing fastening soft base method. The circular connector is connected with the branch pipe of the vacuum pipeline; the square opening pipes are connected with inner holes of the pumping and discharging plastic water discharging plate with the double water discharging channels; the circular connector is further provided with a check valve. According to the pipe and plate connection piece disclosed by the invention, the loss of a vacuum degree in a process of transmitting the vacuum degree from a vacuum pipeline system to the water discharging pipe is reduced, and the transmission efficiency is improved; the loss of vacuum pressure in a sand cushion layer is reduced, and the requirements of sealing are reduced; topsoil and soil below a surface layer can be directly used as a covering and sealing layer; and the pipe and plate connection piece disclosed by the invention is simple to manufacture and can be produced in a factory in a large batch.

The invention discloses a solar-powered VM circulating heat pump system, which comprises a VM circulating heat pump system, a solar water heating system, a heat supply circuit and a cold energy supply circuit, wherein a heat source heat exchanger is arranged between a hot cylinder and a heat regenerator in the circulating heat pump system; the heat source heat exchanger and a water container in the solar water heating system form a heat exchange circulating system; and the energy transfer between the two systems is completed. When the system is used, solar can be used as driving energy to drive a VM circulating heat pump to work to cool or heat in order to meet an air conditioner cooling requirement. The solar is clean, safe and reliable, so energy shortage and environmental pollution are prevented. The system can be widely used in industrial, commercial and civil concentrated cooling and heating systems.

The present invention discloses a stressless space follower positioning equipment. It is characterized by that it has a base seat, the upper portion of said base seat is a cylindrical hollow cavity, the lower bottom surface of said hollow cavity is equipped with a plate-shaped heat-insulating layer, the inner wall of the cylindrical hollow cavity is equipped with a ring-shaped heat-insulating layer, in the heat-insulating layer interior a positioning sleeve is set, in the exterior of positioning sleeve an electric heater or electromagnetic coil is fixed, in the interior of said positioning sleeve a supporting bar is set, between the interior of positioning sleeve and supporting bar low-melting point metal or magnetorheologic fluid is filled, the supporting bar and bottom portion of said positioning sleeve are equipped with supporting spring respectively, in the upper portion of said supporting bar a heat-insulating plate and a supporting flange are fixed, and in the upper portion of said base seat an end cover is mounted.

The invention relates to an underground repetitive shock irritation device and shock irritation method for oil and gas well drilling. The underground repetitive shock irritation device is characterized by comprising an outer cylinder of which the middle part is provided with a shoulder, an upper connector is inserted inside the outer cylinder, and the upper connector is connected with an upper opening of the outer cylinder; a spring which is connected with an impact hammer is sleeved between the middle part of the upper connector and the outer cylinder, and a sleeve is clamped between the impact hammer and the outer cylinder in a sliding way; three structure slots on each of which an arc card is clamped are uniformly distributed on the upper part of the sleeve, and a thrust collar is sleeved at the lower part of each of the structure slots; a stop collar is arranged on the inner wall of the outer cylinder below the thrust collars; a circle of anvil is arranged at the middle part of the inner diameter of the sleeve, a plurality of communicating holes are arranged along the vertical direction of the anvil, an operating sleeve is sleeved on the inner diameter of low-half sleeve in a sliding way, and the operating sleeve is connected at the tail end of the upper connector; a circle of convex plate is arranged at the periphery of the upper opening of the operating sleeve; an external spline which is in sleeve connection with a connector of an internal spline is arranged at the outer diameter of the low-half sleeve, and a lower opening of the outer cylinder is fixedly connected with the connector of the internal spline; and the tail end of the external spline is connected with a lower connector. The repetitive shock irritation device and the shock irritation method disclosed by the invention can be widely used underground repetitive shock irritation in oil and gas well drilling operations in which signals are required.

The invention relates to an internal respiration air bag balanced type anti-explosion and anti-corrosion method of an anti-explosion electric apparatus. A loose air bag is connected to a sealing shell so as to ensure that the internal space of the sealing shell is isolated from the external environment without pressure difference. The invention also relates to an internal respiration air bag balanced type anti-explosion and anti-corrosion lamp which comprises a lamp body and is characterized in that the sealing shell of the lamp body is connected with the loose air bag to ensure that the internal space of the sealing shell is isolated from the external environment without pressure difference. The air bag is an external air bag, the inner cavity of the external air bag is communicated with the inner cavity of the sealing shell; or the air bag is an internal air bag, and the inner cavity of the internal air bag is communicated with the external environment through a connecting pipe. The invention can realize the free respiration with the external environment without pressure difference and does not have the problem of gas or dust fog exchange in the environment; and the air bag is used as a respirator arranged in the electric apparatus and has remarkable anti-exploration and anti-corrosion property.

The invention relates to an anti-seepage air bag for the bottom of a river channel, in particular to an on-site construction method for the anti-seepage air bag. According to the on-site construction method for the anti-seepage air bag, a breathable wall bag of an appropriate size and with an opening arranged at one end is selected according to the requirement of a river channel, rigid plates matched with the size of the breathable wall bag are selected and are fixed along the length direction and the width direction of the breathable wall bag to support the inside space of the breathable wall bag, the height of the rigid plates from the ground of the river channel is equal to the thickness of the breathable wall bag, anti-seepage particles are filled in the breathable wall bag to form the anti-seepage air bag, and the opening end is sealed. According to the on-site construction method for the anti-seepage air bag for the bottom of the river channel, the appropriate breathable wall bag can be selected according to the size and scale requirements of the reformed river channel, the anti-seepage breathable particles are filled on site through inflation to form the anti-seepage air bag, and the problem of long-distance transportation of sand bags in existing river bank transforming construction can be solved. In addition, the sand bags processed on site don't have high requirements on sealing of the breathable wall bag, and on-site construction is extremely convenient.

The invention discloses a self-adjustment magnetorheological fluid single prop. The self-adjustment magnetorheological fluid single prop comprises a hydraulic positioning system and a magnetorheological fluid support system, wherein the hydraulic positioning system comprises a base (1), a positioning block (2), a hydraulic cylinder body (3), a piston column (12), a guide ring (17), a return spring (18), a sealing ring III (19) and a bottom hydraulic oil inlet (20); and the magnetorheological fluid support system comprises a magnetorheological cylinder body (4), a coil (5), an end cover (6), a pressure sensor (7), a support block (8), a cylinder pin (9), a sealing ring I (10), a separation magnetic ring (11), a piston column (12), an upper magnetorheological fluid injecting port (13), a magnetorheological fluid (14), a sealing ring II (15) and a connecting steel wire (16). The self-adjustment magnetorheological fluid single prop needs no pump station to provide great support, has no need to mount a valve base of a three-purpose valve, is lower in processing requirements on sealing pieces and inner surfaces of mobile columns, and can preferably and automatically adjust the support strength when support loads are suddenly changed.

The invention relates to a capillary core performance testing device for a heat pipe and a testing method thereof and belongs to the technical field of heat pipes. The capillary core performance testing device comprises a to-be-tested capillary core (1), a weight testing system (2), a heating system (3), a working medium container (4) and a working medium (5), wherein one end of the to-be-tested capillary core (1) stretches into the working medium container (4) and is contacted with the working medium (5); the other end of the to-be-tested capillary core (1) is heated by adopting the heating system (3); when heated to a phase transformation point of the working medium, the working medium at the heated part is subjected to phase transformation and becomes vapor to diffuse outside, the capillary core (1) continuously sucks the working medium from the interior of the working medium container to supplement the heated part by virtue of a capillary action, and the suction rate is measured bythe weight testing system (2). The device disclosed by the invention is not provided with a condenser, a vapor line, a liquid pipeline and the like, the real-time working medium suction rate of the capillary core is tested by adopting a precision electronic balance, the equipment is simple and easy to operate, and the test results can really reflect the performance of the capillary core.

The invention relates to a device for preparing anhydrous magnesium chloride and a preparation method which uses the device. The device is a chlorination dehydration furnace and comprises a storage cabin, wherein the upper part of the storage cabin is a preheating zone; the middle part of the storage cabin is a double salt forming zone; the bottom of the storage cabin is an ammonium removing zone; the storage cabin is connected with an outlet and has certain sealing property. The preparation method comprises the following steps: uniformly mixing magnesium oxide and / or hydrated magnesium chloride and ammonium chloride, adding the mixture into the chlorination dehydration furnace, and heating, thereby preparing anhydrous magnesium chloride; and repeating the above operation steps when the anhydrous magnesium chloride is discharged out, thereby achieving continuous production. A method for preparing anhydrous magnesium chloride by using the rich magnesite and magnesium chloride hexahydrate resources in China is provided by the invention, continuous production of anhydrous magnesium chloride is achieved, the production efficiency is improved, the production cost is lowered, and the cost of environment protection is lowered; the prepared anhydrous magnesium chloride is high in purity, the content of the main impurity magnesium oxide in the anhydrous magnesium chloride can be controlled to be 0.5% or even less than 0.1%, and the anhydrous magnesium chloride can be used for preparing magnesium metal in an electrolysis manner and has very good industrial and commercial prospect.

The invention discloses a permanent magnet ball joint with a posture sensing function and a measuring method of the permanent magnet ball joint. The permanent magnet ball joint comprises a first permanent magnet, a second permanent magnet, a rotary shaft, a spherical shell, an upper base, a lower base and a Hall sensor. The first permanent magnet is sealed in the spherical shell. The second permanent magnet is fixedly arranged on the lower base. The Hall sensor is arranged on the second permanent magnet. A groove is formed in the lower base, and an opening of the groove faces upwards. One end of the spherical shell is embedded in the groove of the lower base. The other end of the spherical shell stretches out of the upper base to be fixedly connected with the rotary shaft. The rotary shaft drives the spherical shell to rotate relative to the upper base, the second permanent magnet and the lower base. By the adoption of the permanent magnet ball joint with the posture sensing function and the measuring method of the permanent magnet ball joint, multi-degree-of-freedom rotation of the rotary shaft is achieved, the polarization directions of the upper permanent magnet and the lower permanent magnet are opposite, part of gravity of the rotary shaft is counteracted by repulsive force, the positive pressure to a contact portion between the rotary shaft and a bearing is reduced, then the friction is reduced, the abrasion is reduced, the service life of the bearing is prolonged, and vibration and noise are reduced; a good lubricating function is achieved through magnetorheological fluid, and friction is reduced; the position of the rotary shaft can be obtained conveniently and rapidly through detection of the Hall sensor and the mapping relation.