27 results about "Air core" patented technology

The present application relates to the field of new energy vehicle thermal management technology, especially to an integrated thermal management module and a vehicle. The integrated thermal management module comprises: a flow channel for conveying coolant is formed inside a flow dividing member; a power assembly is used to provide power for the coolant flowing in the flow channel; a switching assembly is in communication with the flow channel and comprises a first four-way valve and a second four-way valve; a warm air core inlet, a heat exchanger inlet, a heat exchanger outlet, an electric drive system inlet, an electric drive system outlet, a radiator inlet, a radiator outlet, a heater inlet, a heater outlet, a battery water pump inlet and a battery outlet are arranged on the side wall of the flow dividing member and are in communication with the flow channel. The present application has the advantages of simple structure, small size and easy installation, thereby reducing the weight of the whole vehicle, reducing the parts of the whole vehicle, reducing the cost, reducing the pressure loss of the whole vehicle system, improving the thermal efficiency of the thermal management system, making the vehicle energy-saving and comfortable, and improving the cruising range.

The application belongs to the field of optical fiber cables, and specifically discloses a production method of a hollow-core fiber hybrid cable, a product and equipment thereof, and the production method comprises the following steps: S1, connecting a pressure filling device to the exposed end of a hollow-core fiber wound on a fiber reel, keeping the pressure of the pressure filling device within a set pressure range until the air pressure in the hollow core of the hollow-core fiber is balanced, ending the pressure filling, and then plugging the exposed end of the hollow-core fiber to obtain a pressure-filled hollow-core fiber; and S2, placing the fiber reel of the pressure-filled hollow-core fiber on a wire rack with a heating and heat preservation function, and releasing the pressure-filled hollow-core fiber into an extruder to perform cabling. The application further provides the above hollow-core fiber hybrid cable production equipment. The method and equipment can solve the pollution problem of the air core of the hollow-core fiber hybrid cable and improve the production quality of the hollow-core fiber.

The application discloses a kind of quasi-distributed gas monitoring device and method based on hollow anti-resonance optical fiber, the device includes the first laser and hollow anti-resonance optical fiber connected in turn, N micro-holes are provided on the hollow anti-resonance optical fiber;The micro-hole is set in the position to be monitored, and each micro-hole is close to the setting of N acoustic sensors with preset distance;The acoustic sensor is optical fiber film microcavity pressure sensor, adopts end face elastic diaphragm structure;The application utilizes acoustic sensor to detect the sound wave signal excited by the thermal effect of the gas molecules to be measured into the hollow core part of hollow anti-resonance optical fiber through micro-hole and absorb excitation light energy, solve the problem that the existing gas detection technology based on photoacoustic spectroscopy involves more complex acoustic sensing unit and higher manufacturing cost, signal transmission is susceptible to electromagnetic interference, it is difficult to realize the miniaturization, high sensitivity, long distance quasi-distributed gas detection.

The application discloses a self-winding hollow coil device, and relates to the technical field of mechanical automation, which comprises a machine base and a wire feeding unit, a lifting frame, a lifting cylinder, a core mold, a motor, a locking structure, a capturing unit, a wire end flattening unit, a coil pre-pressing unit, a wire cutting unit, a wire tail compacting unit and a discharging unit which are arranged on the machine base. The wire feeding unit is used for conveying copper wires, the locking structure can lock the copper wires, and the units work cooperatively to complete the manufacturing of the hollow coil. The application realizes automatic winding of the hollow coil, improves production efficiency, and guarantees product quality and consistency.

This application relates to the field of power equipment condition monitoring technology, specifically to a distributed voltage sensing probe, system, and method for dry-type air-core reactors. The probe includes: an annular insulating shell adapted to surround the reactor coil; an induction plate disposed inside the annular insulating shell for coupling with the electric field on the surface of the coil to form a coupling capacitor; and a signal processing module disposed inside the annular insulating shell, which includes a precision voltage-dividing capacitor forming a capacitive voltage divider circuit with the coupling capacitor. The probe, through the capacitive voltage divider circuit, proportionally converts the high voltage of the coil into a low-voltage signal characterizing the voltage of the coil relative to ground or between coils. This ability to proportionally convert the high voltage of the coil into a low-voltage signal characterizing its voltage relative to ground or between coils provides a direct voltage monitoring means for early fault detection inside the reactor, and the probe's adaptability design conforms to the shape of the coil, ensuring the stability of the voltage sensing.

The application discloses a kind of hollow core optical fiber internal gas pressure supplement device and method, the device includes: air generator, for outputting certain pressure clean air;Gas path;Gas path one end is connected air generator to access clean air, the other end is connected gas guide mechanism and hollow core optical fiber respectively;Gas guide mechanism is used to export part of gas in gas path to atmosphere.The device structure is simple, convenient to use, can conveniently and quickly realize the gas supplement of batch hollow core optical fiber.

The application discloses a hollow microstructure optical fiber with additive marks, a preform and a drawing detection method. The optical fiber comprises a cladding hollow sleeve and a plurality of anti-resonant microstructure units arranged and attached to the inner wall of the cladding hollow sleeve, and the anti-resonant microstructure units are used for forming an air core area with an inscribed circle size. The plurality of anti-resonant microstructure units are rotationally symmetrical. One or more additive mark units are arranged outside the core, so that the end face structure of the hollow microstructure optical fiber has asymmetry. The area of the additive mark unit accounts for 0.002% to 2% of the area of the cladding hollow sleeve. The hollow microstructure optical fiber with additive marks can mark and identify each anti-resonant microstructure unit in the drawing detection through the additive mark unit, judge the geometric uniformity of the hollow microstructure optical fiber, and provide reference and guidance for the production of the subsequent hollow microstructure optical fiber preform, and timely process adjustment and improvement.

This invention relates to a dual-hollow-core fiber polarization beamsplitter for terahertz communication. The fiber structure includes: an arc-shaped rectangular tube unit, an air core, an outer cladding tube, and a circular hollow-core nested tube. The arc-shaped rectangular tube unit on the x-axis is nested around the fiber core and connected to the inner wall of the outer cladding tube. The arc-shaped rectangular tube unit, the air core on the y-axis, and the outer cladding tube together constitute a dual-hollow-core fiber polarization beamsplitter for terahertz communication. This invention increases the asymmetry in the x and y directions by introducing the arc-shaped rectangular tube unit, thereby increasing birefringence. Furthermore, by designing a hybrid structure of nested tubes and arc-shaped rectangular tube units in the fiber cladding, the fundamental mode loss is reduced. The principle of suppressed coupling is used to confine light to the fiber core region. The effective optical path difference in the x and y directions is generated by the arc-shaped rectangular tube unit, thus introducing high birefringence. This enables low-loss light guiding of the hollow-core fiber in the terahertz band. The hybrid structure of "circular arc rectangular tube unit + circular nested tube" proposed in this paper for double hollow core anti-resonant fiber not only achieves high birefringence through geometric asymmetry, but also maintains extremely low transmission loss in the terahertz band. This performance combination is expected to solve the core contradiction of current terahertz hollow core fibers in achieving both polarization preservation and low-loss light guiding.

A hollow core fiber is provided. The hollow core fiber includes at least one cleaved fiber end-face and a dielectric coating. The dielectric coating is formed by a passivation layer of dielectric that is applied to the at least one cleaved fiber end-face such that a portion of an interior surface that defines a hollow core of the hollow core fiber adjacent to the at least one cleaved fiber end-face is coated with the dielectric coating.

The utility model discloses an inductor of electrically adjustable inductance, including air core coil and two magnetic cores of at least partial insertion in air core coil, two magnetic cores are symmetrically arranged, and the first base plate and the adjusting plate are fixed on two magnetic cores respectively, and the second base plate is arranged on the side of adjusting plate, and the electric governor of driving the magnetic core on adjusting plate is installed on the second base plate, and the drive part of electric governor is connected with adjusting plate. After the rotation driver (rotary motor) is energized, the rotation screw is driven to rotate, the rotation screw is matched with the threaded hole, the magnetic core on the adjusting plate is lifted and displaced, the air gap between a pair of magnetic cores is adjusted, or the motor or linear motor of electric linear push rod is energized to drive the magnetic core on the adjusting plate to lift and displace, the air gap between a pair of magnetic cores is adjusted, and the inductance adjustment of inductor is achieved.

This invention relates to the field of hollow-core optical fiber technology, and more particularly to a fluoride hollow-core antiresonant optical fiber and its fabrication method. The optical fiber comprises, from the inside out, an air core, an inner cladding, an outer cladding, and a protective coating; both the inner and outer cladding are made of fluoride glass free of monovalent alkali metal fluorides, and the refractive index of the fluoride glass is greater than that of the air core; the inner cladding is an array structure formed by multiple inner capillaries arranged in a ring-shaped periodic pattern around the air core; the outer cladding is a solid fluoride glass layer wrapped around the inner cladding; the inner and outer claddings are fixed together with epoxy resin; the fluoride glass includes ZrF4, ZnF2, BaF2, SrF2, CaF2, AlF3, and YF3. The advantages are: the use of deliquescent fluoride glass free of monovalent alkali metal fluorides solves the problems of easy moisture absorption and crystallization of traditional fluoride fibers, achieving low-loss transmission in the mid-infrared region at wavelengths of 2-5 μm and above.

This utility model relates to the field of heat pump technology, specifically to a heat pump system for a new energy power system. The system includes an electronic water pump assembly, a refrigeration unit assembly, an electronic expansion valve assembly, a three-way proportional valve assembly, a five-way proportional valve assembly, a cold air core, a warm air core, a radiator, a fan, a compressor, a blower, a water-cooled condenser, a gas-liquid separator, and an expansion tank assembly. Sensors monitor the temperature and operating conditions of the passenger compartment, battery pack, motor, and electronic control system. Based on this, the control system determines and selects an appropriate mode, activating corresponding actuators. The proportional valves and electronic expansion valves precisely regulate the flow rate and direction of the coolant and refrigerant. The system continuously monitors and returns to standby mode when preset exit conditions are met. It uses R290 refrigerant to meet low GWP requirements and reduce emissions; the proportional valves and heat exchange devices adapt to different operating conditions; and the dual-indirect heat exchange reduces safety hazards.

The embodiment of the application discloses a kind of automobile thermal management system and its control method, by setting first throttling valve in the first pipeline that the refrigerant outlet of compressor is connected with the refrigerant inlet of condenser, the exhaust pressure of compressor is increased, so as to increase the output power of compressor, improve the temperature of refrigerant, to realize the heating in the car under low temperature condition.And, the technical scheme of the application, in low temperature heating mode, the cooling liquid outlet of cooler is communicated with the cooling liquid inlet of condenser, so that cooling liquid absorbs the condensation heat of refrigerant gas condensation and is heated to reach the cooler after heat dissipation in warm air core, so that cooling liquid can provide heat for the evaporation of refrigerant in cooler, and cooling liquid is cooled after being heated in cooler and returns to condenser.It is guaranteed that refrigerant can be evaporated into gas in cooler after being output from compressor and return to compressor, so that evaporator does not need to work, so that under low temperature condition, heating in the car can also be realized.

The application discloses a hollow microstructure optical fiber with subtractive marks, comprising a cladding hollow sleeve and a plurality of anti-resonant microstructure units arranged and attached to the inner wall of the cladding hollow sleeve, the anti-resonant microstructure units are used for forming an air core area with an inscribed circle size; the plurality of anti-resonant microstructure units are rotationally symmetrical; one or more subtractive mark units are arranged outside the core, so that the end face structure of the hollow microstructure optical fiber has asymmetry; the subtractive mark unit is a groove or a through hole, and the area of the subtractive mark unit accounts for 0.002% to 2% of the area of the cladding hollow sleeve. The hollow microstructure optical fiber with subtractive marks can mark and identify each anti-resonant microstructure unit in the drawing detection, judge the geometric uniformity of the hollow microstructure optical fiber, provide reference and guidance for the production of the hollow microstructure optical fiber, and timely process adjustment and improvement.

The utility model provides a kind of one-way gas release device for oilfield pumping unit well casing pressure balance, including butt joint and air core;Butt joint is hollow structure, and the two ends of butt joint are used to connect with oilfield pumping unit well casing;Air core includes hollow body, and body is arranged in the hollow structure of butt joint, and is sealingly connected with butt joint;It also includes valve stem being threaded in body, and valve stem includes top end, stem body and base being arranged in sequence, and the outer diameter of stem body is less than the inner diameter of body;The top end of valve stem is threaded out one end of body, and there is elastomer between top end and one end of body;The base of valve stem is threaded out the other end of body, and the diameter of base is greater than the inner diameter of body and has sealing structure;Base and body are sealingly connected under normal state, and air passage is blocked;Under high-pressure gas, top end extrudes elastomer, stem body moves to base direction, so that gap is generated between base and body, and air passage is communicated.

The application discloses a kind of hollow core anti-resonant optical fiber and its preparation method and sensing system, it is related to optical fiber technical field, its technical solution main point is: including: air core;Quartz anti-resonant cladding microstructure, including a plurality of circumferentially arranged anti-resonant elements, a plurality of anti-resonant elements are enclosed and define air core, quartz anti-resonant cladding microstructure is used to limit optical field transmission in air core;Platinum alloy functional layer, it is coated on the outer surface of quartz anti-resonant cladding microstructure.The application improves the mechanical strength and extreme environment tolerance of optical fiber by platinum alloy functional layer, realizes the firm combination of quartz anti-resonant cladding microstructure and platinum alloy functional layer using integrated forming process, and with platinum alloy functional layer and air core as electrical temperature measurement and optical strain measurement channel respectively, realize distributed temperature and strain synchronous measurement, with the advantages of excellent mechanical performance, strong environmental adaptability, multiple functions.

The utility model discloses a kind of high enema devices, it is related to enema device field, including enema bag, liquid guide pipe, liquid injection pipe, moffett dropper and speed regulator;The liquid outlet of enema bag is connected with one end of liquid guide pipe, and the other end of liquid guide pipe is connected with liquid injection pipe;Moffett dropper and speed regulator are equipped on the liquid guide pipe;Between the liquid guide pipe and liquid injection pipe, it is detachably connected by thread;Expansion plug is sleeved on the liquid injection pipe;The expansion plug is composed of plug head, air bag and plug tail, air bag is fixedly connected between plug head and plug tail, and the tail end of air bag is equipped with air core;The center of plug head, air bag and plug tail is equipped with the through hole of intercommunication, and liquid injection pipe penetrates through the through hole;Water plug is equipped at the through hole of plug tail;The device can prevent pipeline from falling off during enema process, and can be left in anal after enema, to prevent liquid leakage.

The application discloses a kind of anti-resonant hollow optical fiber and its structural parameter determination method, optical communication system;The anti-resonant hollow optical fiber includes: outer sleeve, and air core and cladding located in the outer sleeve, the cladding is arranged around the air core;The cladding contains one or more anti-resonant components, wherein one or more anti-resonant components in the cladding satisfy: the dispersion-loss merit factor of the anti-resonant hollow optical fiber at working wavelength is greater than the first threshold value, the dispersion-loss merit factor is related to the dispersion coefficient and transmission loss coefficient of the anti-resonant hollow optical fiber.By cladding structure design, the application realizes the decoupling of dispersion and loss at resonance wavelength, can obtain high dispersion compensation with lower loss cost, and is suitable for dispersion management of long-distance, large-capacity optical communication system.

The application provides a low-loss anti-resonant hollow optical fiber, which is composed of three glass tubes in the form of inner cutting and nested splicing to form an anti-resonant unit, and at least three anti-resonant units are uniformly embedded along the air core circumferential ring in the inner cladding, and the axes of the glass tubes are parallel to the axis of the air core, so that the anti-resonant unit forms step-by-step accurate constraint on the light field, fully plays the anti-resonant effect, and can also enhance the structural strength of the unit itself, takes into account the overall structural symmetry of the optical fiber, effectively reduces the light field diffusion and reduces the light leakage loss of optical transmission. At the same time, the medium characteristics of the air core can greatly reduce the material loss, improve the stability and effectiveness of the light field constraint, and then efficiently control the overall optical transmission loss, finally realize the low-loss optical transmission of the optical fiber, so that it has excellent transmission performance, good structural stability and higher preparation feasibility.

The application discloses a spiral inductor assembly and a control method thereof, and relates to the technical field of inductors. The spiral inductor assembly comprises an inductor coil, a fixing assembly and a driving and adjusting assembly. The inductor coil is in a conical spiral structure, has a top end and a bottom end, and is configured as an air-core inductor structure. The fixing assembly is used for fixing the bottom end of the inductor coil. The driving and adjusting assembly is connected with the top end of the inductor coil and is configured to drive the top end of the inductor coil to move along an axial direction so as to change the pitch of the inductor coil. Based on the technical scheme disclosed by the application, the requirement of dynamic change of inductance values of different circuits under various working conditions can be met, the applicability and flexibility of the inductor assembly are greatly improved, the magnetic hysteresis loss and the eddy current loss can be effectively reduced, the occurrence of magnetic saturation can be avoided, and the quality factor can be improved.

The embodiment of the specification provides a reconfigurable magnetic field three-phase power generation system based on a suspension winding framework, which comprises a support framework, a power driving module, a stator, a rotor and a measurement and data acquisition system, the support framework adopts a vertical layered tower structure and comprises a bottom layer, a middle layer and a top layer from bottom to top; the power driving module is arranged on the bottom layer; the measurement and data acquisition system is arranged on the top layer; the stator is a suspension air-core stator arranged on the middle layer, which comprises a plurality of non-magnetic suspension columns and three-phase windings wound thereon, and the three-phase windings adopt star connection; the rotor is a modular reconfigurable rotor, which is coaxially arranged on a transmission shaft of the power driving module and located inside a cylindrical space surrounded by the columns of the suspension air-core stator, and the rotor is provided with a magnet mounting groove for detachably mounting magnets, so that the number of magnets, the number of pole pairs and the polarity arrangement mode can be self-defined.

The application discloses a coupling structure of a solid optical fiber and a hollow optical fiber and a fixing method thereof, and belongs to the technical field of optical communication. In the coupling structure, the end of the solid optical fiber is tapered to form a smooth tapered transition zone, and the transition zone is partially inserted into the central air core of the hollow optical fiber; the top end or the side wall surface of the tapered transition zone is provided with a light beam shaping structure (a microsphere lens coated with an anti-reflection film or a subwavelength microstructure array). The application actively regulates the outgoing light field through the light beam shaping structure, realizes accurate mode field matching with different core diameter hollow optical fibers, greatly reduces the echo loss, and improves the optical signal transmission efficiency. In addition, the application cooperates with fixing processes such as direct hot melting, external glass tube fusion or point glue curing, and realizes high-strength packaging of the coupling structure of the solid optical fiber and the hollow optical fiber.

This invention relates to a novel multi-nested anti-resonant optical fiber for reducing transmission loss in the terahertz band. The fiber structure includes: an air core, four sets of circular arc rectangular tube nested units, two sets of semi-circular arc hollow core nested tubes, and an outer cladding tube. The four sets of circular arc rectangular tube units are symmetrically connected to the inner wall of the outer cladding tube around the air core at an angle; the two sets of semi-circular arc hollow core nested tubes are symmetrically distributed about the x-axis and located between adjacent circular arc rectangular tube nested units. This invention introduces multi-layered nested negative curvature resonant units, utilizing the anti-resonance effect to confine terahertz waves within the air core for transmission. By optimizing the number of layers, size, and rotation angle of the circular arc rectangular tube nested units, as well as the layout of the semi-circular arc hollow core nested tubes, the transmission loss of the optical fiber is effectively reduced and higher-order modes are suppressed. This invention provides a waveguide solution for broadband, low-loss, single-mode transmission in the terahertz band, and has application potential in terahertz communication, imaging, and sensing fields.

This invention relates to a hollow waveguide structure based on the anti-resonance effect and its fabrication method, belonging to the field of waveguide optics, and solves the problems of large size, complex manufacturing process, and high cost of traditional hollow anti-resonant optical fibers. The hollow waveguide structure based on the anti-resonance effect includes: a first cladding layer, a core layer, and a second cladding layer stacked sequentially; wherein the core layer includes an air core and a plurality of capillary walls distributed symmetrically to both sides of the air core, wherein the thickness of the capillary walls is determined based on the anti-resonance condition, which is determined by the wavelength of the transmitted light, the effective refractive index of air, and the effective refractive index of the capillary wall material.

The utility model discloses a straightening machine with clamping structure includes workstation, including workstation, corrects the box and clamping structure, the workstation upper end fixed connection fixed block, the fixed block sets up corrects the box, clamping structure sets up in fixed block outside, clamping structure includes setting up the bottom plate 9 on the workstation, set up the stand on the bottom plate, the stand upper end swing arm, swing arm's one end is connected with the stand through swing arm axle, swing arm's other end is connected with drive cylinder, drive cylinder's output end is connected with chuck chuck, and the clamping surface of chuck chuck is opposite to corrects the box. Designed clamping structure, can adjust the height of chuck chuck through swing arm axle, can carry out end face clamping to hollow core tube and realizes rotation through chuck chuck simultaneously.

The margins of the coil components are adjusted to improve the filling rate of the coil's air core. [Solution] The coil component 1000 has a first side surface 101 and a second side surface 102 facing a first direction X, and a third side surface 103 and a fourth side surface 104 facing a second direction Y, and includes a body 101 containing a magnetic material, a coil 300 disposed inside the body and forming at least one turn, and lead frames 400 and 500 connected to both ends of the coil inside the body and disposed on the first and second side surfaces of the body, where My is the shortest distance between the coil and the third side surface of the body, and W is the length along the second direction of the body, then My / W is 0 or more and 0.1 or less.

The application provides a kind of stator winding and hollow cup motor, specifically relates to micro motor technical field, the stator winding includes: flexible printed circuit board, the flexible printed circuit board is wound, forms multilayer winding drum;The flexible printed circuit board includes substrate and multiple tracks formed on the substrate, each track includes multiple track segments connected in chain, any two connected track segments in the multiple track segments are distributed on different sides of the substrate;The distance between adjacent track segments on the same side of the substrate is consistent, the line width of the track segment is positively correlated with the radial curvature radius of the flexible printed circuit board at the track segment, so that the track segments on the multilayer winding drum are aligned one by one.The application positively correlates the line width of track segment with the radial curvature radius of flexible printed circuit board at the track segment, accurately offsets the cumulative effect of outer layer circumference when multilayer winding, and significantly improves slot fill rate.