121results about How to "Will not cause failure" patented technology

The invention relates to a parameter selection method adopting an onboard control moment gyroscope group vibration-isolating platform and belongs to the field of the attitude control and the vibration and shaking control of a spacecraft. (1) an idea of the cube vibration-isolating platform is adopted, the cube vibration-isolating platform is arranged between a configuration consisting of a plurality of control moment gyroscopes and a satellite body and the high frequency vibration caused by a plurality of control moment gyroscopes is isolated to the greatest extent; and (2) by reasonably selecting parameters of the onboard control moment gyroscope group vibration-isolating platform, the problem of effectiveness loss of other onboard systems, which is caused after the vibration-isolating platform is applied on a satellite, is avoided.

The invention discloses a multipurpose cap-shape valve respiratory valve, comprising a valve seat, a valve core and a fixed sleeve; the valve core is of cap shape and made of elastic rubber; the cap rim of the valve core is fixed between the valve seat and the fixed sleeve; the cap body is sheathed in the central hole of the valve seat or the fixed sleeve; furthermore, the top of the cap of the valve core is provided with at least two lancings so that at least one valve clack is formed at the top of the cap. the lancings are distributed all around in a radial pattern from the axle center projected at the top of the cap to form a taper angle shape valve clack, or a C shape, V shape, U shape or opening polygon shape valve clack to cause the end part projected at the top of the cap to form a flip-shell valve clack or cause the lateral side projected at the top of the cap to form at least two valve clacks. The invention has the advantages of simple structure, few faults, long service life, low manufacturing cost, multiple functions and extensive usage, is favorable for environment protection, and has good social and economical benefits.

The invention discloses an atomization device and an ultrasonic humidifier, wherein the atomization device comprises a transducer, an atomization enhancing part and a buoyancy part, wherein the atomization enhancing part is arranged in liquid above the transducer in a floating manner and comprises a guide cylinder with a through hole, an axial center line of the through hole is consistent to an axial center line of the transducer, and the buoyancy part is connected with the guide cylinder and can floats on the surface of the liquid above the transducer. According to the invention, the existing ultrasonic humidifier is revolutionarily improved, when the liquid above the transducer is at any liquid level height, the atomization device and the ultrasonic humidifier provided by the invention can generate good atomization effect, thereby being adapted to a use environment with any liquid level height, greatly increasing the atomization efficiency, and having the advantages of high adaptability, simple structure, low material consumption, low manufacture cost, convenience in installation, easiness in cleaning and the like.

The invention relates to an electro-pneumatic pressure regulation module (16) for electro-pneumatic brake systems of vehicles, designed as a unit, comprising at least two pressure regulation channels which can be regulated separately, wherein for each pressure regulation channel a regulated working pressure, which is present on at least one working pressure port (44, 46), is generated for at least one brake application device (48, 50) of the brake system based on working air that is derived from at least one compressed air supply (4, 6), depending on the brake demand signals of a braking power sensor (2). The invention includes a) that in order to create pressure regulation channels having separate pneumatic circuits, at least one dedicated supply pressure port (14, 24), which can be connected to a dedicated compressed air supply (4, 6), is assigned to each pressure regulation channel, wherein b) the pneumatic flow paths of each pressure regulation channel, at least starting from the respective supply pressure port (14, 24) to the respective working pressure port (44, 46), are designed pneumatically separate from the pneumatic flow paths of the respectively other pressure regulation channel.

This invention provides a method for forming a self-aligning metal silicide which forms an isolation zone, transistor grating structure and a light doped source / drain zone on a semiconductor base, and a grating gap wall on the grating side wall containing a silicon oxide layer and a silicon nitride layer on it then a heavy doped source / drain zone, and to form a blocking layer on the metal layer before forming metal silicide by heat annealing in the successive process of self-aligning metal silicide, utilizing the silicon nitride layer of the said grating gap wall and the said blocking layer to stop Si atoms and O actoms from diffusing to the side wall of the grating gap wall to avoid short circuit.

The invention discloses carboxymethyl chitosan nano medicament-carrying microspheres and a preparation method thereof. The preparation method comprises the following steps of: preparing aqueous solution of carboxymethyl chitosan, dissolving a medicament into the carboxymethyl chitosan solution, stirring the solution uniformly, adding calcium chloride solution, and performing one-time ion cross-linking pre-coating; adding surfactant into an oily component, stirring the surfactant and the oily component to obtain an oil phase mixture, adding the pre-coated mixed solution into the oil phase mixture, quickly stirring the solution to form a water-in-oil mixture, adding glutaraldehyde, performing secondary curing cross-linking reaction to obtain medicament-coated carboxymethyl chitosan microspheres, performing centrifugal separation on the two-phase mixture, cleaning the lower layer by using petroleum ether or ethanol solvent, washing with distilled water, drying, and thus obtaining the carboxymethyl chitosan nano medicament-carrying microspheres. Because the carboxymethyl chitosan with biocompatibility, safety, non-toxicity and capability of being safely metabolized in vivo is used as a coating material, the carboxymethyl chitosan nano medicament-carrying microspheres have the characteristics of small medicament-carrying granule, high medicament-carrying amount and coating rate, good sustained-release performance and capability of fully exerting the effect of the medicament.

The invention relates to a solar thermal collector and a heating system applying the thermal collector. The solar thermal collector can be used for drying clothes or heating water and comprises a solar thermal collecting tube, a unifying device and a heating system; wherein the solar thermal collecting tube is a duplicature vacuum tube, the two ends of the solar thermal collecting tube are all connected with the unifying device and are communicated with a semi-ring channel, thus forming a solar thermal collector; the heating system can be a clothes-drying system composed of a clothes-drying case, a condenser, a hanger, a fan and an air pipe and also can be a water heating system composed of a thermal storage tank, a steam outlet, a heating coil tube, a water tube, a tap and a superconductive liquid tube. The invention overcomes the defects of the existing solar thermal collector and provides a solar thermal collector capable of drying cloths or heating water as well as a heating system applying the solar thermal collector, manufacturing process is simple, starting is fast, cost is lower, use is reliable, thermal absorption area is wide, thermal utilization factor is high, and corrosion resistance can be achieved.

The invention provides a photovoltaic battery which comprises one or a plurality of material layers which are of micro-nano holographic optical structures. The micro-nano holographic structures are used as light-pervious layers, so that reflection of incident light on light incident planes is reduced and dependency of the photovoltaic battery on angles of the incident light is reduced. Light can be trapped and also transmitted. Action areas between light and active layer photoelectric conversion materials can be greatly increased on an action layer. A complete reflecting mirror structure is adopted on a back electrode, light transmitted to the back electrode can be reflected back to the photoelectric conversion materials, and meanwhile with surface plasmon polariton resonance effect applied, light intensity can be increased, so that useful effect of the light and the photoelectric conversion materials is increased and improved from one to more angles, and photoelectric conversion efficiency of the photovoltaic battery is increased by a large scale. With the above one or more functional structures adopted, various photovoltaic battery structures can be manufactured and the aim of improving the performance of the photovoltaic battery can be achieved.

The invention discloses a loading robot arm control multipoint mapping intelligent control method and system. The method comprises the first step of conducting grabbing training multiple times for a loading robot arm to obtain a grabbing sample set when a loading robot completes a grabbing task in different fixed grabbing points; the second step of conducting joint classification on the grabbing sample set according to the change amplitude a% of all arm joint control values to obtain various joint sample sets; the third step of using the joint sample sets obtained in the second step to construct a prediction model of loading robot arm joint control values; the fourth step of regarding the distance between a loading robot base and the edge of the bottom end of a grabbing table as an input value, and through a prediction model, obtaining control values of all joints respectively, and outputting the control values to complete the control over the grabbing task. According to the loading robot arm control multipoint mapping intelligent control method and system, by constructing the map between the distance of the robot base and the grabbing platform and a robot arm posture, complicated construction of a kinematical equation is avoided; accurate joint control values are obtained, and the joints are flexibly controlled.

The invention discloses an interface anti-static method, an anti-static protection circuit and electrical equipment. The circuit comprises a point discharge part, a photoelectric element and a current buffering unit, wherein the point discharge part is connected with an equipment interface and breaks down the air between the point discharge point and the reference ground in the equipment to discharge and generate light energy when the static voltage higher than the set first voltage threshold occurs at the equipment interface; the photoelectric element is matched with the point discharge part, acquires the light energy generated by the point discharge part, and generates breakdown current to control a switching element connected with the photoelectric element to disconnect a current path between the equipment interface and a protected component; and one end of the current buffering unit is connected with the point discharge part, the other end of the current buffering unit is connected with the switching element, and the current buffering unit is used for extending the arrival time of the current from the equipment interface to the protected component to ensure that the switching element can be disconnected before the static current arrives. The point discharge part is matched with the photoelectric element to prevent the protected component from being damaged by higher staticvoltage, the component with protective effect can not be damaged when the voltage is discharged, and the cost investment of static protection is saved.

The invention relates to a high-strength bamboo composite material dismountable board house. The high-strength bamboo composite material dismountable board house comprises a frame, a top board and side boards. The frame is composed of stand pillars and beams, wherein the number of the stand pillars is an even number greater than 2, and the number of the beams is half of that of the stand pillars; the stand pillars are perpendicularly arranged on the ground, and every two stand pillars are connected through one beam; the top plate is composed of a plurality of inserting boards inserted among the neighboring beams; the side plates are composed of a plurality of inserting boards inserted among the neighboring stand pillars. Compared with the prior art, the high-strength bamboo composite material dismountable board house replaces the boards used in existing board houses with the high-strength bamboo inserting boards, thereby achieving enclosure effects and meanwhile improving the structural anti-tilting capacity; the structure of the high-strength bamboo composite material dismountable board house can be changed into a multi-span mode as required and provided with windows and doors in different position to obtain arrangement flexibility; made of high-strength bamboo materials, the high-strength bamboo composite material dismountable board house obtain heat preservation performance better than that of the existing board houses, and the materials are green and environmentally friendly and have no damage to human and the environment.

The invention relates to a method for implementing the load migration in a pool area, comprising the following steps that: a target core network CN node receives migrated user identification; and the target CN node enables a migrated user to migrate to the target CN node and allocates local identification to the migrated user. At the same time, the invention also provides a system for implementing the load migration in the pool area and a CN node.

The invention relates to a mixotrophic culture method for producing polyunsaturated fatty acid and fucoxanthin by utilizing phaeodactylum tricornutum. The invention relates to application of mannitolin producing the polyunsaturated fatty acid and the fucoxanthin by mixotrophic culture of diatom and application of tea polyphenol or active ingredients of the tea polyphenol in producing the polyunsaturated fatty acid and the fucoidan by the mixotrophic culture of the diatom. According to the mixotrophic culture method disclosed by the invention, the mannitol is adopted as a mixotrophic carbon source for the first time; through experiments, the mannitol is found to have the advantage that the growth rate and the yield of the phaeodactylum tricornutum can be effectively improved when being compared with other carbon sources; in addition, mixotrophic culture has better synthesis efficiency than that of heterotrophic culture in pigment synthesis level of a photosynthetic system. Besides, according to the mixotrophic culture method for producing the polyunsaturated fatty acid and the fucoxanthin by utilizing the phaeodactylum tricornutum, disclosed by the invention, the tea polyphenol isused as a bioactive substance to culture the diatoms, and can effectively promote absorption and utilization of the carbon sources; through actual detection, the biomass of the phaeodactylum tricornutum can be increased by 108 percent, the content of the fucoxanthin is increased by 96 percent and the content of EPA is increased by 122 percent.

The invention discloses a sulfur hexafluoride gas density relay. According to the sulfur hexafluoride gas density relay, the shock resistance performance is higher, the contact point contact and electrical performance of a signal generator is better, the service life is long, and the precision is high. The sulfur hexafluoride gas density relay comprises a shell, a base, an end base, a Bourdon tube, a temperature compensating component, a machine core, a signal conditioning mechanism and a plurality of microswitchs, wherein the end base, the Bourdon tube, the temperature compensating component, the machine core, the signal conditioning mechanism and the microswitchs are arranged in the shell. The sulfur hexafluoride gas density relay is characterized by further comprising a misoperation preventing mechanism corresponding to contact operating arms of the microswitchs. The misoperation preventing mechanism comprises a fixing base, a rotary shaft, a rotary piece and a deflector rod, wherein the deflector rod abuts against the contact operating arm of each microswitch. When the gas density relay is impacted or vibrated, the deflector rod of the malfunction preventing mechanism swings through the rotary piece and deflects the contact operating arm of each microswitch to the pressure increasing direction, so that the signal generator is far away from the position where a misoperation occurs, the signal conditioning mechanism is prevented from mistakenly triggering the signal generator when the gas density is normal, and the shock resistance performance of the density relay is greatly improved.

The invention relates to a short-circuit protection circuit for switching power supply of a frequency converter, comprising a main power circuit. The main power circuit is respectively connected to an RCD absorbing circuit, a PWM controller and an output rectification circuit. A feedback circuit is respectively connected with the PWM controller and the output rectification circuit. The short-circuit protection circuit further comprises an overvoltage protection circuit connected with the PWM controller and the feedback circuit. In the +5V rectification output circuit of the output rectification circuit, a restorable fuse is serially connected between a 5V rectifier diode and a resistor. The beneficial effects of the invention are that the invention protects the output of any circuit and has perfect protection function; when short circuit appears, on-the-job accident of the frequency converter is not caused and failure of elements is not caused.

The invention provides a radio-frequency vertical connection circuit between two-dimensional millimeter wave modules, aiming at the radio-frequency vertical connection circuit with higher reliability and more convenient assembly and disassembly. The radio-frequency vertical connection circuit is implemented through the following technical scheme: an upper module metal structural member (2) and a lower module metal structural member (4) are fixed through a screwed way or the other detachable way, and the lower end of the upper module metal structural member and the upper end of a lower module two-dimensional multi-chip circuit board component (3) are in pressure fit; a coaxial connector (5) is welded in the upper module metal structural member, so that a vertical circuit connection between an upper module two-dimensional multi-chip circuit board component (1) and the lower module two-dimensional multi-chip circuit board component is realized; and a fuzz button (53) is coaxially connected to a probe (54) of a step cylinder structure, and a small end of the probe (54) is higher than an outer circle insulating layer (52) to be in contact with the lower module two-dimensional multi-chip circuit board component. The radio-frequency vertical connection circuit has the advantages of simple structure, small insertion and extraction force and easiness in assembly and disassembly.

The invention discloses a sulfur hexafluoride gas density relay. The sulfur hexafluoride gas density relay comprises a shell, a signal control part and an indicating value display part, wherein the signal control part and the indicating value display part are arranged in the shell and are relatively independent. The signal control part comprises a control base, a control end seat, a control Burdon tube, a control temperature compensation piece, a control connecting arm, a control signal regulating piece and a plurality of control microswitches serving as signal generators. The control microswitches are arranged in the mode that the width direction of operating handles of the control microswitches is perpendicular to the width direction of the Burdon tube. The indicating value display part comprises a display Burdon tube, a display temperature compensation piece, a display base, a display end seat, a display machine core, a pointer, a display connecting arm, a display signal regulating piece and a plurality of display microswitches serving as signal generators. The sulfur hexafluoride gas density relay can achieve overpressure alarming and control, the accuracy of dense relays is improved to the maximum extent, the thickness of the dense relays is reduced, the application range of the dense relays is enlarged, and the sulfur hexafluoride gas density relay is suitable for being applied to various occasions.

The invention provides an oil-based gel leak stopping slurry. The slurry comprises, by weight, 35-70 parts of base oil, 5-25 parts of a curing agent, 0.1-1 part of an activator, 0.5-4 parts of water and 0-60 parts of a weighting agent. The oil-based gel leak stopping slurry has the advantages of simple formula, onsite preparation and construction benefiting, effective inhibition of invasion of a stratum fluid, maintenance of the trend of gradual enhancement with time after leakage layer injection, improvement of the bearing ability of the leakage layer, solving of the loss problem of a loss return type loss well, and improvement of the one-time leak stopping success rate.

The present invention provides alternating current directly driving light emitting diode illuminator. It includes one or more series connected same polarity LED, series connected same polarity protective diode. The present invention uses diode for protecting light emitting diode without damage by negative voltage or static discharge (ESD), without adopting transformer, rectifying filter circuit and voltage regulator circuit complexity driving circuit, raising power supply change-over efficiency. The present invention also provides semi-revolution bidirectional and complete cycle bidirectional basic element circuit using above-mentioned single direction basic element circuit as basic.

The invention provides a power distribution cabinet with temperature and humidity control functions. The power distribution cabinet comprises a cuboid cabinet body, a cabinet door and a fan, the fan is arranged at the inner upper right corner of the cabinet body, a control system is arranged on a rear panel in the cabinet body, two temperature sensors are mounted on each of an upper panel and a lower panel in the cabinet body, another four temperature sensors are mounted on a right panel in the cabinet body, a humidity sensor is mounted on a left panel in the cabinet body, a dehumidifying device is arranged below the humidity sensor, and the control system controls operation of the fan according to a set temperature value of the interior of the cabinet body, and controls operation of the dehumidifying device according to a set humidity value of the interior of the cabinet body. The power distribution cabinet with the temperature and humidity control functions has the advantages that the power distribution cabinet is reasonable in structure and capable of monitoring temperature and humidity in the power distribution cabinet body in real time, the defects of single-point collecting temperature control of a traditional temperature and humidity controller are overcome, requirements on control precision are meet, control speed is increased obviously, and constant temperature and humidity in the power distribution cabinet body in an electric power system are guaranteed effectively.

The invention discloses an LED (light-emitting diode) tunnel lamp using a double-faced radiator structure, comprising an extrusion type double-faced radiator (103) which is extrusion-formed by a metal plate, wherein the extrusion type double-faced radiator (103) is provided with an LED bulb (102); the extrusion type double-faced radiator (103) is mounted on a mounting support seat (104); and the extrusion type double-faced radiator (103) is provided with more than one mounting interfaces for mounting the LED bulb (102). The LED tunnel lamp provided by the invention is featured with simple structure and low cost, is mounted, used and maintained fast, cheaply and conveniently, and is capable of not enlarging faults; and independence of bulbs, lamps and lighting control products of the LED lamp for production and use can be realized so as to greatly reduce production links, to realize batch production, and to be beneficial to application and industrial scale of the LED energy-saving lighting products. And the LED tunnel lamp can effectively reduce the problem of glare lighting in tunnels, and therefore, vehicles are driven more securely.

The invention discloses a thin sulfur hexafluoride gas density relay which has the advantages that anti-vibration performance is higher, contact and electric performances of contacts of a signal generator are better, the service life is long and the accuracy is high. The thin sulfur hexafluoride gas density relay comprises a shell, a base, an end base, a burdon tube, a temperature compensation sheet, a connecting arm, a clock mechanism, a signal adjuster and a plurality of micro-switches, wherein the base, the end base, the burdon tube, the temperature compensation sheet, the connecting arm, the clock mechanism, the signal adjuster and the plurality of micro-switches are arranged inside the shell. The thin sulfur hexafluoride gas density relay is characterized in that the micro-switches are arranged in the manner than the width direction of operation handles of the micro-switches is vertical to the width direction of the burdon tube. Due to adoption of the innovative design, the relative length of the connecting arm is reduced; therefore, the impact or vibration torque on the connecting arm is reduced when the gas density relay is shocked or vibrated, so that the impact or vibration force on the burdon tube is further reduced, the signal adjuster is prevented from triggering the micro-switches by mistake when the gas density is normal, and the anti-vibration performance of the density relay is greatly improved. Meanwhile, by adoption of the innovative design, the thickness of the density relay is reduced, the application range is expanded, and application to various places can be realized.

The invention discloses a method and an apparatus for transmitting a BFD message during LSP detection by BFD. The method comprises: an Ingress node setting a destination IP (internet protocol) to the local IP address in a BFD message, adding a tag to the BFD message, and transmitting the BFD message with the tag to an Egress node; the Egress node removing the tag after receiving the BFD message with the tag, and forwarding the BFD message to the Ingress node by using the destination address of the BFD message; and the Ingress node receiving the BFD message to detect the connectivity of the LSP. In the invention, the Egress node only needs to forward the BFD message without creating a BFD session, thereby effectively improving the utilization rate of the BFD session.

Under the existing technical conditions, the high resolutions and large breadths of images obtained by remote sensing satellites are mutually contradictory. The invention discloses a method for obtaining high-resolution and large-breadth remote sensing images by utilizing a small satellite group. According to the method, multiple satellites are grouped to be operated, so that high-resolution and large-breadth earth observation images can be obtained. By adoption of the method, each small satellite has a strict requirement for resolutions of observation instruments and the breadth requirement can be properly broadened; and after orbit injection, all the small satellites can be uniformly distributed on a same orbit plane, and also can be operated in a relatively concentrated way. When an observation task is carried out for each time, a large area is segmented, on and off moments of reasonable observation instruments are distributed for each satellite, lateral tilt angle and pitch angles of satellite attitudes are set, finally, images obtained by all the small satellites are spliced to realize one-time transition of the satellites and obtain high-resolution and large-breadth earth observation images, and if the quantity of the small satellites in the satellite group is more, the breadths of the images are larger. Moreover, by adoption of a satellite group design, the risk of causing the whole satellite task to lose efficacy due to the failure of individual satellites is reduced.

The invention is applicable to the technical field of photovoltaic power generation and provides a solar cell, a solar cell string and a lamination tile photovoltaic module. The lamination tile photovoltaic module comprises a plurality of solar cells, wherein accessory grid lines are arranged on back surfaces of the solar cells, the solar cells are connected in a lamination tile shape to form sub-cell strings, a front-surface main grid line of an arbitrary solar cell is in overlap joint with a back-surface main grid line of the adjacent solar cell, a plurality of sub-cell strings arranged in parallel are connected in parallel to form the cell string by a first parallel convergence strip and a second parallel convergence strip, the corresponding accessory grid lines in the plurality of sub-cell strings arranged in parallel are connected by conductive strips, and the plurality of cell strings arranged in parallel are connected in series by series convergence strips. When a solar cell piece is shielded, a current can pass by the shielded solar cell by the accessory grid lines, and a hot spot effect is prevented.

The invention discloses a marine multifunctional micro-plastic collecting device comprising a coarse particle filter tube, a fine particle collecting tube and a tail tube, wherein the coarse particlefilter tube, the fine particle collecting tube and the tail tube are sequentially connected from front to back; a flow guide cover is arranged at the front end of the coarse particle filter tube, andthe coarse particle filter tube is arranged at an opening part of the flow guide cover; a coarse particle filter screen is fixed in the rear part of the coarse particle filter tube; flow guide rings are arranged in the coarse particle filter screen; the flow guide rings are of an annular structure; a central concave hole of the flow guide cover is aligned to the middles of the flow guide rings; the flow guide rings are of a streamline structure; a channel between the central concave hole of the flow guide cover and the front ends of the flow guide rings forms a venturi tube shape with two thick ends and the fine middle; a circular channel between the flow guide rings and a channel between the flow guide rings and a shell of the coarse particle collecting tube also form a venturi tube shape; a fine particle filter screen is arranged between the fine particle collecting tube and the tail tube; and a venturi tube shape with two thick ends and a thin middle is formed between the tail partof the fine particle collecting tube and the tail tube. According to the marine multifunctional micro-plastic collecting device in the invention, the micro-plastic rubbish in the lake and the ocean can be collected.

The invention discloses a multi-lead-screw synchronous motor lifting rod. The multi-lead-screw synchronous motor lifting rod comprises a pipe body and a lead screw driving device of the pipe body. The lead screw driving device comprises a plurality of round pipe lead screws. The innermost round pipe lead screw is a bottom lead screw, the outermost round pipe lead screw is a top pipe lead screw, and the rest of round pipe lead screws are inner pipe lead screws. The lower end of the bottom lead screw and the lower ends of the inner pipe lead screws are connected with ring-shaped lower sleeves correspondingly. The lower end of the top pipe lead screw is connected with a nut in an engaged mode. The upper end of the bottom lead screw and the upper ends of the inner pipe lead screws are connected with ring-shaped upper sleeves. The outer circumferential walls of the ring-shaped upper sleeves are provided with guiding keys in the axial direction. The inner walls of the inner pipe lead screws and the inner wall of the top pipe lead screw are provided with axial guiding grooves matched with the guiding keys. The bottom lead screw and the inner pipe lead screws are matched with the adjacent inner pipe lead screws and the top pipe lead screw through the keys and the grooves, axial planes do not needed to be machined on the pipe wall of the bottom lead screw and the pipe walls of the inner pipe lead screws, nuts on the ring-shaped lower sleeves are not prone to abrading, so that the normal lifting operation of the multi-lead-screw synchronous motor lifting rod can be ensured.

The invention relates to a solar water heater with solar thermal collector pipes mounted above a hot water storage tank. The solar water heater comprises solar thermal collector pipes, a hot water storage tank, an intake pipe and a drainage pipe and is characterized in that each solar thermal collector pipe is a vacuum pipe comprising an inner pipe and an outer pipe, wherein the inner pipe is provided with internal fins and external fins, the solar thermal collector pipe is internally provided with superconducting fluid and capillaries, each capillary is provided with the fins, rubber heads are fixed at both ends of each capillary, and the solar thermal collector pipes are mounted above the hot water storage tank which is internally provided with a heat exchanger coil and a regenerative smoothing emulsion. The invention overcomes the defects of a traditional solar heat collector and has the advantages of simple manufacture process, rapid start, lower cost, reliable use, wide heat-absorbing area, high heat utilization rate and corrosion resistance, and the like.

The invention discloses a multiple crystal bar paralleled laser amplifier gain medium. A plurality of laser crystal bars are paralleled to amplify the area of the cross section of a laser grain medium, and the cooling and heat dissipation can be carried out through a central channel and slots among the plurality of laser crystal bars. The invention has the characteristics of good optical homogeneity, low cost and good heat dissipation performance in respect to a large-diameter solid round bar laser crystal; and the invention has the advantages of low cost and changeability of local damage in respect to a tubular laser gain medium formed by hollowing out the center of the large-diameter solid round bar laser crystal.

The invention provides a method for producing a core-pulling and resetting mechanism of an injection mould. The core-pulling and resetting mechanism comprises a fixed mould (4) and a movable mould (10), wherein the movable mould (10) is provided with a locating block (8), chutes (7) and a locking block (9); and the fixed mould (4) is provided with a core-pulling slider (1), a buckle (2) and a limited block (3). The core-pulling and resetting mechanism is characterized in that springs (5) and a cylinder (6) are arranged at the lower part of the fixed mould (4). By adopting the structure in the invention, when the movable mould and the fixed mould are closed, the locking block is tightly pressed on the inclined plane of the top end of the core-pulling slider; when the movable mould and the fixed mould are separated, the springs rebound and the core-pulling slider is pulled out toward the upper inclined part along the chutes, so that the core-pulling action can not fail, thus realizing the double-safety pulling mechanism based on the springs and buckle. Because of the addition of the cylinder, when the movable mould and the fixed mould are closed, the cylinder drives the core-pulling slider to reset along the chutes, thus realizing the double-safety resetting mechanism based on the cylinder and locking block.