70results about How to "Difficult to conduct" patented technology

The invention discloses a novel airflow preheating device, which comprises a heating pipe and a stream guidance pipe, wherein the upper end of an opening at the lower end of the stream guidance pipe is sealed, both the upper end and the lower end of the heating pipe are opened; the stream guidance pipe is nested in the heating pipe; a spiral stream guidance blade is arranged on the outer wall of the stream guidance pipe; an airflow hole is formed in the wall of the lower end of the stream guidance pipe; a ventilation pipe is arranged inside the stream guidance pipe; the ventilation pipe is a hollow pipe which is provided with openings at both ends; the outer diameter of the ventilation pipe is less than the inner diameter of the stream guidance pipe, so that an airflow space is formed between the outer wall of the ventilation pipe and the inner wall of the stream guidance pipe; the maximum outer diameter of the spiral stream guidance blade on the outer wall of the stream guidance pipe is less than or equal to the inner diameter of the heating pipe; the ventilation pipe is supplied with air from lower end; an airflow enters the region between the inner wall of the stream guidance pipe and the outer wall of the ventilation pipe from the top end of the ventilation pipe, then enters a space formed between the outer wall of the stream guidance pipe and the inner wall of the heating pipe through the airflow hole in the wall of the stream guidance pipe and the airflow, guided by the spiral stream guidance blade, flows out from the top end of the stream guidance pipe from bottom to top. The airflow preheating device disclosed by the invention, by virtue of an optimized airflow passage, can avoid easy heating of the outer wall of an electronic cigarette.

A dynamic damper for damping vibration of a rotary shaft. The dynamic damper includes a tubular mass member and a rubber elastic member. The rubber elastic member includes an attachment tube press-fitted onto the rotary shaft and an arm. The attachment tube is disposed coaxially with the mass member but nearer to an axial center thereof than the mass member. The arm connects the attachment tube to the mass member. The attachment tube includes a tubular support portion connected to the arm, a tubular attachment portion, and a tubular coupling portion for coupling the tubular support portion with the tubular attachment portion. The tubular attachment portion has larger interference than the tubular support portion.

In the ion storage device 10 according to the present invention, an LC resonant circuit 40 for generating an RF voltage for trapping ions is connected to at least one of the electrodes 11, 12 and 13 surrounding the ion storing space 14. The LC resonant circuit 40 includes switching devices 46, 47 and resistances 48, 49 for stopping the RF voltage when the ions stored in the ion storing space 14 are ejected. The inductance L, the capacitance C and the resistance R of the LC resonant circuit are set to substantially satisfy the critical damping condition, which means that R=X / 2 where X=ω0L=(ω0C)−1. According to this configuration, the RF voltage damps fast when the RF voltage is stopped by the switching devices 46, 47, and the deterioration of the mass resolution of the mass analyzer or the peak shift in the mass spectrum is prevented.

The invention discloses a heating non-combustible type electronic cigarette set. The cigarette set comprises a shell and a support in the shell, and the support divides the space in the shell into a heating bin, a control bin and a battery bin which are vertical and mutually parallel; a heating tube used for mounting a cigarette in an inserting mode and heating the cigarette is arranged in the heating bin, a radial heat insulation tube is arranged outside the heating tube, a first heat insulating gap is formed in the portion between the heating tube and the radial heat insulation tube, and thelower surfaces of the heating tube and the heat insulating tube are together connected with a base; a half of the radial heat insulation tube in the radial direction is placed on the support, the other half of the radial heat insulation tube is covered with a heat insulation plate, supporting points are arranged on the inner walls of the support and the heat insulation plate to support the radialheat insulation tube, and a second heat insulation gap is formed in the portion between the support and the heat insulation plate and the radial heat insulation tube; a control circuit board and a suction sensor are arranged in the control bin. The heating non-combustible type electronic cigarette set has the advantages that through improvement of the structure, the cigarette set has excellent heat insulation effects on the heating tube and meanwhile can accurately judge the smoking states of users and calculate the smoking number to conveniently and sufficiently use the cigarette.

The invention discloses a magnetic type self-repairing cable protection pipe, and belongs to the field of cables. The scheme that an expansion repairing ball is extruded by impact force to trigger a repairing device of the expansion repairing ball is adopted to repair a damaged part at the outer end of a wrapping layer, so that the damage of the outer end of the wrapping layer is avoided. An arc-shaped top plate and a supporting plate buffer the impact force of the outer end of the wrapping layer, so damage caused by extrusion to the embedded cable is effectively reduced; when the expansion repair ball is triggered by extrusion, repair glue is extruded out of the hollow expansion ball and covers the damaged position of the wrapping layer; and when the outer end of a pre-buried cable is damaged due to excessive impact force, an electromagnetic field is generated, the electromagnetic field adsorbs the rubber magnetic particles in the fixing pipe, the insulating glue and the rubber magnetic particles are adsorbed to the outer side of the pre-buried cable through the release holes, and leakage current is not likely to be conducted while the rubber magnetic particles and the electromagnetic field are adsorbed to each other, so the safety after repair is improved.

The invention discloses a preparation method of pre-alloy powder of a ferrum-aluminum intermetallic compound Fe2Al5 with uniform components and fine granularity, which successively comprises the following steps: proportioning ferrum powder and aluminum powder according to the weight percent of Fe2Al5 and obtaining the uniform mixing powder through ball-milling, mixing and sieving; placing the mixing powder into a container to be flattened; heating the mixing powder to the reaction temperature of the main solid phase of ferrum-aluminum to be sintered at the vacuum or non-oxidative atmosphere; naturally cooling when maintaining the temperature for 4 to 8 hours; and grinding and sieving the obtained Fe2Al5 intermetallic pre-alloy to obtain the pre-alloy powder of the ferrum-aluminum intermetallic compound Fe2Al5. The preparation method of the invention has the advantages of simple technology, high efficiency and low cost.

The present invention is a method for synthesis of nucleic acids to amplify an intended nucleic acid in a region in which a GC content is rich, wherein a polyhydric alcohol and / or ammonium sulfate is present in an amplification reaction solution. According to the present invention, it is possible to amplify nucleic acids in a GC rich region efficiently and directly from a sample such as blood containing lots of PCR inhibitory substances without undergoing a process of isolating and purifying the nucleic acid, even though conducting PCR in the GC rich region tends to be difficult using conventional processes even if purified DNA is used.

A cooling structure for an electric motor includes: a motor case that houses a stator and a rotor therein, a groove opened on an end surface in an axis direction of the rotor being formed in the motor case; a motor control circuit attached to the motor case; and a terminal base that closes the groove to constitute the groove as a cooling water passage through which cooling water can flow, the terminal base connecting a power line of the motor to a power line of the motor control circuit.

The invention provides a method of manufacturing a relief printing plate having at least engraving an area which is in a relief forming layer of a relief printing plate precursor for laser engraving and is to be exposed by scanning exposure using a fiber-coupled semiconductor laser which emits laser beam with a wavelength of 700 nm to 1,300 nm. The relief printing plate precursor has at least a relief forming layer provided over a support, and the relief forming layer contains at least a binder polymer and a photo-thermal conversion agent. The invention further provides a relief printing plate precursor for laser engraving which can be used in the method of manufacturing a relief printing plate.

The invention discloses a shell for a portable constant-temperature box. The shell comprises a shell body, and a heating base, a circuit board, a second magnet, a coil and a first magnet arranged in the shell body from top to bottom; a wiring column is connected between the coil and the heating base; a wheel shaft is arranged at the bottom end of the shell body; the coil coats the wheel shaft; the wheel shaft penetrates through the shell body, and two ends of the wheel shaft are respectively connected with tires; the shell body is divided into an upper shell body for loading an insulation object and a lower shell body for loading a constant-temperature circuit and the coil by the heating base; and a box cover for covering the shell body is arranged at the top end of the upper shell body. The shell enables an insulation box to be used indoors and outdoors.

The invention discloses a dehumidifying storage cabinet, which is provided with at least one storage unit. Each storage unit comprises a plurality of plate base units used for encircling to form a holding space, and at least one plate base unit is platy integrally, and is provided with an electro-heating plate which is driven by an external power source to radiate heat energy to the holding spaces at least. The electro-heating plates are carbon fiber heating plates preferably. Metal plates with through holes can be stacked on a surface, which faces to the corresponding holding space, of each electro-heating plate at intervals, and a heat-insulation plate can be arranged on a surface, which is opposite to the corresponding holding space, of each electro-heating plate. The dehumidifying storage cabinet has the advantages of small occupied space, simple structure, low power consumption, good dehumidification effect, convenience in control and the like, and is suitable to be used as a household wardrobe.

The invention relates to a rock wool sandwich panel and a processing method thereof. The rock wool sandwich panel comprises a first panel, a second panel and a rock wool sandwich layer arranged between the first panel and the second panel, a first heat preservation layer, a sound insulation layer, a first fireproof layer and a waterproof layer which are sequentially distributed in the direction away from the rock wool sandwich layer are arranged between the rock wool sandwich layer and the first panel. A second heat preservation layer, a sound absorption layer and a second fireproof layer which are sequentially distributed in the direction away from the rock wool sandwich layer are arranged between the rock wool sandwich layer and the second panel. The sound insulation layer comprises twosound insulation plates, a sound insulation cavity is formed between the two sound insulation plates, and the peripheral edges of the two sound insulation plates are connected in a sealed mode. The rock wool sandwich panel has the effect of improving the sound insulation performance.

The invention discloses a multichannel loop type uniform temperature plate which comprises a heat-conducting main plate body. The main plate body is provided with a heat absorbing part and a heat radiating part; a heat absorbing cavity is arranged in the heat absorbing part; a liquid medium capable of absorbing heat is filled in the heat absorbing cavity; a heat radiating cavity is arranged in theheat radiating part; a liquid medium channel and a steam channel communicating with the heat absorbing cavity and the heat radiating cavity are arranged in the main plate body; the heat absorbing part can absorb external heat and transmits the heat to the liquid medium, and steam produced after the liquid medium absorbs heat can enter the heat radiating cavity through the steam channel; and the heat radiating part can absorb heat of the steam in the heat radiating cavity and radiates the heat to the external environment, and a liquid medium produced through heat radiating and condensing in the heat radiating cavity can return into the heat absorbing cavity through the liquid medium channel. The multichannel loop type uniform temperature plate provided by the invention can be beneficial toeffectively improving the heat transfer efficiency, and is simple in structure, small in size, wide in application range, and convenient to use.

The invention discloses a shelter shed good in stability and for ancient building restoration in the technical field of ancient building restoration. The shelter shed comprises supporting legs. Mounting strips are mounted at the tops of the supporting legs on the same side of the front and back sides. A ceiling is mounted at the tops of the mounting strips of the left set and the right set. Beforeassembling, the number of the supporting legs in the left-and-right direction and the front-and-back direction is adjusted according to the occupied area of a building, the whole building is wrappedin the shelter shed, and then the length of the stretching parts of landing legs is adjusted through locking bolts according to the height of the building; after adjusting of the height of the supporting legs is completed, arched supporting parts and the ceiling are fixed through lead screws, then T-shaped supporting blocks and the arched supporting parts are inserted into T-shaped grooves at thetops of the mounting strips, finally bolts are screwed into to fix the mounting strips and the ceiling to the tops of the supporting legs, and rainproof protection is carried out on the building; andshelter cloth can shelter one face of the ancient building, and good windproof, rainproof and sun-proof effects are achieved.

The invention discloses a landscape power cabinet comprising a power cabinet body. The power cabinet body is arranged under the ground. Elevating frames are connected on the bottom part of the power cabinet body. The two sides of the power cabinet body are provided with exhaust fans. The top part of the power cabinet body is the pointed top. The power cabinet body comprises a top cover and four walls. The periphery of the top cover downwardly extends to form rain shielding plates. The top cover is provided with a landscape steel grid frame which is connected with the top cover through supporting columns. The landscape steel grid frame is provided with a direction board which is provided with an elevating frame control switch. Draining ditches are arranged below the four walls. The beneficial effects of the landscape power cabinet are that the landscape power cabinet is reasonable in structure, simple in design, convenient and practical, economical in land use and insulating and fireproof and guarantees safe use of the power cabinet through the waterproof and draining design and can be hidden under the ground so as to become the development trend of urban planning.

A cooling structure for an electric motor includes: a motor case that houses a stator and a rotor therein, a groove opened on an end surface in an axis direction of the rotor being formed in the motor case; a motor control circuit attached to the motor case; and a terminal base that closes the groove to constitute the groove as a cooling water passage through which cooling water can flow, the terminal base connecting a power line of the motor to a power line of the motor control circuit.

The invention discloses an n-CdSxSe1-x film / graphene schottky junction solar cell, which comprises a substrate, a back electrode, a semiconductor film layer, an insulating layer, a front electrode and a grapheme layer superimposed sequentially, wherein through holes are formed in the insulating layer and the front electrode; the grapheme layer is contacted with the surface of the semiconductor film layer through the through holes to form a schottky junction; the semiconductor film layer is an n type CdSxSe1-x semiconductor film with the formula as shown in the figure. The solar cell has the advantages that the preparation method is simple, the cost is low, the incident light is fully absorbed, the generating efficiency is high, and the electrode is not easy to conduct through utilizing the CdSxSe1-x semiconductor film and the grapheme to form a solar cell device with a schottky junction structure.

The present invention provides a tunnel-effect type magnetoresistive head (120) which can prevent degradation of a tunnel-effect type magnetoresistive effect element caused by contact with a magnetic recording medium without degrading a shielding effect. In this tunnel-effect type magnetoresistive head (120), for the above purpose, an exposed surface area of a shield and electrode layer, which is viewed from an air bearing surface, is decreased, and a shield layer is also provided outside the shield and electrode layer.

Provided is technology with which organic compound steam generated inside a generating tank does not flow back into an inner connecting pipe through which organic compound is fed to the generating tank. An apparatus (1) for producing an organic thin film comprises a reservoir (31) in which organic materials are disposed, a generating tank (33) for heating the organic materials and generating steam from the organic materials, and a transport apparatus (32) for feeding the organic materials inside the reservoir (31) to the generating tank (33). The transport apparatus (32) has an outer connecting pipe (37), which forms an airtight connection between the atmosphere inside the reservoir (31) and the atmosphere inside the generating tank (33); a quartz inner connecting pipe (38), which is disposed inside the outer connecting pipe (37) and moves organic materials from the inside of the reservoir (31) to the inside of the generating tank (33); and a gas introduction port (42) for the introduction of gas into the inner connecting pipe (38).

The invention discloses a circuit board packaging structure and a manufacturing method thereof. The circuit board packaging structure comprises a substrate with opposite first and second surfaces, an annular magnetic element, an adhesive layer, a plurality of conductive parts and a plurality of conductive channels. The first surface and the second surface are provided with a plurality of first metal parts and a plurality of second metal parts, respectively. An annular groove is formed in a position, not covered with the first metal part, on the first surface. The annular magnetic element is arranged in the annular groove. The adhesive layer is located on the first surface and covers the first metal parts and the annular magnetic element. The conductive parts are formed on the adhesive layer and correspond to the second metal parts, respectively. The conductive channels penetrate through the conductive parts, the adhesive layer and the substrate, and are located in the inner wall and outside the outer wall of the annular groove, respectively. Each conductive channel is provided with a conductive film for electrically connecting each conductive part and the corresponding second metal part.

A light emitting device comprises: an LED; a LED holder having a LED mount, a radiation fin provided on a back side or a periphery of the LED mount, and an engaging part projecting from a center of the back side of the LED mount; a power circuit supplying drive power to the LED; and a body having an inner space for accommodating the power circuit, one end, and the other end where the LED holder is fixed, wherein the other end of the body has an engaged part engaged to the engaging part of the LED holder, and holding the LED mount and the radiation fin in a state of separation from the body; heat conductivity of the LED mount and the radiation fin is higher than that of the engaged part of the body.

The present disclosure relates to a smart water cup. The method includes: a water cup body and a water cup base; the water cup base includes a power module and a coil module, wherein the power module is used to supply power to the coil module, so that The coil module forms a magnetic field; the water cup body includes a water cup shell and a water cup liner located in the water cup shell, wherein the material of the water cup liner includes a metal material; wherein the water cup body is placed on the After the water cup base, the magnetic field formed by the coil module forms a transformer with the metal water cup liner, and the transformer generates heat energy in the water cup liner to heat the liquid in the water cup liner. This technical solution can directly heat the water cup liner in the water cup shell, and the water cup shell outside the water cup liner can improve the heat preservation effect of the smart water cup and reduce the waste of heating heat energy, and the user can contact the smart water cup by touching the water cup shell, which is convenient for users use.

Disclosed is a voltage transformer. The voltage transformer comprises a shell 1. The shell 1 is inflated with SF6, two E-type magnetic core columns 2 are arranged inside the shell, the two E-type magnetic core columns 2 are arranged oppositely to form an EE-type magnetic core column; each E-type magnetic core column 2 is hollowed and is filled with liquid nitrogen; a primary winding 3 and a secondary winding 4 are arranged on a middle magnetic core 7 of the EE-type magnetic core column, and the secondary winding 4 is connected with a supporting pipe insulator 5. According to the voltage transformer, the magnetic cores are hollow and filled with liquid nitrogen, when a break line fault appears, the current becomes larger, heat energy is rapidly absorbed, the phenomenon that the temperatureof the voltage transformer is excessively increased is relieved, the voltage transformer is prevented from breaking down, and therefore a zinc oxide lightning arrester is not likely to break down or be communicated; accordingly, failure of the lightning arrester is avoided, and possibly-caused severe results are effectively restrained.

The invention discloses a heat preservation nail for a tunnel in cold region. The heat preservation nail comprises a heat insulation disk, a reinforcing sleeve, a heat insulation sleeve, a heat insulation expansion sleeve and a screw. The heat insulation sleeve is fixed to the bottom of the heat insulation disk. The reinforcing sleeve is embedded in the heat insulation sleeve. The reinforcing sleeve is provided with a threaded hole. The heat insulation disk is provided with a through hole matched with the threaded hole. The bottom of the heat insulation sleeve is connected with the heat insulation expansion sleeve. The bottom of the heat insulation expansion sleeve is sealed. The heat insulation expansion sleeve is provided with a plurality of vertical separation grooves. The separation grooves penetrate through the sidewall of the heat insulation expansion sleeve. The screw is composed of a screw head and a rod body. The rod body penetrates through the through hole and the threaded hole from top to bottom to be inserted into the heat insulation expansion sleeve. The rod body is provided with a thread matched with the threaded hole. The outer diameter of the rod body is greater than the initial inner diameter of the heat insulation expansion sleeve. The heat preservation nail can be fixed more firmly and is not likely to get loose through cooperation of the reinforcing sleeve and a reinforcing disk.

The present invention discloses methods and systems for genetic malware analysis and classification using code reuse patterns. Methods include the steps of: upon receiving a target binary file, disassembling the target binary file into assembly code; extracting individually-identifiable code fragments from the assembly code; normalizing the individually-identifiable code fragments into target genes; and collating the target genes into a code genome database. Alternatively, the step of normalizing includes upon detecting a MOV instruction, corresponding to a command to move values to a register before performing a CALL instruction, normalizing the MOV instruction to a PUSH instruction in the target genes. Alternatively, the step of normalizing includes upon detecting a SUB instruction, corresponding to a command for a subtraction operation to be performed, normalizing the SUB instruction to an ADD instruction, corresponding to a command for an addition operation to be performed, in the target genes.

The invention relates to a supporting insulation structure for a refuge chamber of a deep well under high-temperature geological conditions. The supporting insulation structure comprises a concrete structure layer built around enclosing rock, and an insulation layer is arranged at the inner side of the concrete structure layer. The insulation layer has the thickness of 50-300 mm and is made from polyurethane insulation materials or foamed cement prefabricated building blocks. According to the supporting insulation structure for the refuge chamber of the deep well under the high-temperature geological conditions, heat of high-temperature rock is enabled to be difficultly transferred to the refuge chamber, so that the heat load of the refuge chamber required for being cooled through air conditioning is obviously reduced, and the condition that the indoor temperature of the chamber can be conditioned to the temperature acceptable to human bodies through a conventional cooling manner becomes possible.

The invention relates to a power semiconductor device anti-single particle burning method which is characterized in that a power semiconductor device drift region is evenly divided into two to four regions according to the transverse thickness, and minority carrier lifetime is shortened aiming to one of the regions; the power semiconductor device drift region is evenly divided into two to four regions according to the longitudinal thickness, and the minority carrier lifetime is shortened aiming to one of the regions.

The invention discloses a crystal melting device for honey. A heating and cooling assembly and a stirring assembly are arranged in a tank body; the heating and cooling assembly is made of a helically coiled pipeline to form a hollow cylindrical body; a space is formed between every two adjacent up-down layers of the pipeline to form pipeline spacing layers; the head part and the tail part of the pipeline extend out of the tank body; a first valve assembly is arranged on the head part of the pipeline so that the pipeline simultaneously communicates with an external high-temperature medium source and an external cooling medium source to enable high-temperature mediums to enter the pipeline during crystal melting / or enable cooling mediums to enter the pipeline after crystal melting; a space is reserved between the heating and cooling assembly and the inner wall surface of the tank body to form an outer chamber; a hollow part of the heating and cooling assembly forms an inner chamber; and the stirring assembly enables the honey to flow back and forth between the inner chamber and the outer chamber through the pipeline spacing layers to achieve rapid uniform crystal melting or rapid uniform cooling. The crystal melting device disclosed by the invention has the advantages of being simple and compact in structure, high in degree of intelligence, easy in operation and maintenance, and high in crystal melting efficiency, and the honey quality can be effectively guaranteed.