3009results about "Glass making apparatus" patented technology

The utility model relates to a multi-stroke wire pushing rod mechanism of a wire drawing machine, which belongs to the technical field of wire drawing machines and comprises a wire drawing machine frame, a plurality of machine heads are arranged at the front end of the wire drawing machine frame, yarns which are wound with the machine heads to form a barrel are arranged on the machine heads, and composite wire feeding rings which are fixedly connected with the machine heads are arranged at the front ends of the machine heads. A yarn pushing rod mechanism fixedly connected with a rack of the wire drawing machine through bolts is arranged above the machine head, and the yarn pushing rod mechanism drives yarn to complete the creeling and head feeding process on the composite yarn feeding ring. The device has the characteristics of compact structure, good operation stability and high use efficiency. The problem that the amount of yarn falling into a deep groove is large is solved. The problem that large and small silk threads cannot be automatically fed and automatically reeled on the same drawing machine is solved. The front end of the wire pushing air cylinder is jacked, and any position control is achieved through the stroke positions of the two air cylinders.

The invention relates to the technical field of intelligent control, in particular to an intelligent control method and system for continuous basalt fiber drawing forming. The method comprises the following steps: acquiring temperature measurement point data including temperature data and flow data; temperature control, energy supply strategy adjustment and bushing partition heating parameter adjustment are conducted according to the collected temperature measurement point data, and a fuzzy self-tuning algorithm is adopted to conduct linkage adjustment on the temperature of an uptake, the temperature of an access and the temperature before bushing; dynamically adjusting an energy supply strategy based on the energy supply sequence; and the partition heating parameters of the bushing are adjusted by using a PID control algorithm. According to the invention, a longitudinal partition heating mode and accurate temperature control are adopted for the bushing, and a strategy of dynamically adjusting the wire drawing speed and the partition temperature according to the average value of the wire diameter is combined, so that the wire diameter of basalt fibers drawn by the whole bushing can be effectively ensured to be more uniform.

The invention discloses a basalt fiber multi-bushing wire drawing control method, system and equipment and a medium. The basalt fiber multi-bushing wire drawing control method comprises the following steps that the real-time temperature, the real-time viscosity and the melt flow of a target bushing and the target fiber diameter of the target bushing are obtained; inputting the real-time temperature, the real-time viscosity, the melt flow and the target fiber diameter into a preset dynamic equilibrium equation to obtain a dynamic equilibrium index; whether the dynamic balance index is larger than a preset index threshold value or not is judged, and if yes, the melt flow is input into a preset flow compensation equation to obtain a flow compensation value; after the wire drawing control process is guided to reach preset time based on the flow compensation value, whether the dynamic balance index is larger than a preset index threshold value or not is judged again; if yes, the real-time temperature is input into a preset temperature compensation equation to obtain a temperature compensation value, and the wire drawing control process is guided based on the temperature compensation value, and the wire drawing control method and device have the advantages that the priority sequence of regulation and control indexes can be reasonably planned, and the wire drawing regulation and control efficiency is improved.

The utility model relates to the technical field of glass fiber kiln wire drawing equipment, in particular to a two-way gas pipe for a numerical control wire drawing machine. The trachea comprises a trachea body; a main gas path, a main gas groove and an auxiliary gas groove are arranged on the gas pipe body; the main air groove is communicated to the main air path through the air hole; and the main gas tank and the auxiliary gas tank are isolated from each other. According to the double-path air pipe for the numerical control wire drawing machine, the main air path, the main air groove, the auxiliary air groove and other structures are arranged on the air pipe body, double-path isolated air supply can be achieved in one air path on the machine head main shaft, and the problem that in the prior art, due to the complex air path, the gravity center of the machine head main shaft shifts is solved.

The invention provides a low-dielectric glass fiber composition, a low-dielectric glass fiber and a preparation method thereof, and the low-dielectric glass fiber composition comprises the following components in molar percentage: 54 to 60 percent of SiO2, 21 to 32 percent of B2O3, 1.0 to 9.5 percent of Al2O3, 3 to 16 percent of alkaline earth metal oxide, 0.01 to 4.0 percent of ZrO2, 0.1 to 4.0 percent of TiO2, 0.01 to 2.0 percent of LiO2 and 0.5 to 5.0 percent of F2. Wherein the alkaline earth metal oxide comprises CaO and MgO, and according to the molar percentage, the CaO accounts for 0.01%-4.0%, and the MgO accounts for 0.5%-8.0%. According to the glass fiber, SiO2 and B2O3 are taken as main components of the glass, SiO2 can be taken as a network former of a glass structure, on one hand, part of B2O3 can form a [BO4] tetrahedral structure to enter a glass silica network structure so as to play a role in reinforcing a net, and on the other hand, B2O3 can effectively inhibit ion polarization so as to reduce the dielectric constant and dielectric loss of the glass fiber; according to the present invention, the specific type of the alkaline earth metal oxide is added, and the certain content of the Al2O3, the ZrO2, the TiO2, the LiO2 and the F2 is supplemented so as to further reduce the dielectric constant and the dielectric loss of the glass fiber, and the cooperative control of the components is beneficial to the improvement of the glass processing property and the guarantee of the glass fiber drawing stability.

The present disclosure is directed to various embodiments and methods for producing a hollow-core optical fiber. The methods may include heating a hollow-core preform having a cross-sectional area greater than 0.0013 m2. The hollow-core preform may include a substrate with an inner surface. The interior cavity may include a tube in contact with the inner surface. The method may also include drawing the hollow-core optical fiber from the hollow-core preform. The drawing may include elongating the tube to a capillary which may include a contact length with the inner surface of the substrate. The contact length may be a linear distance from a first contact point of the capillary with the inner surface of the substrate to a second contact point of the capillary with the inner surface of the substrate. The contact length may be less than or equal to 20% of a capillary outer diameter.

The invention relates to the field of optical fiber cable preparation, and discloses an optical fiber cable preparation method and a pressure control device.The method comprises the steps that an optical fiber preform is prepared, and a sleeve is coaxially assembled outside the optical fiber preform; extending the optical fiber preform and the sleeve through two extension pipes; a cavity between one ends of the two extension pipes is blocked through a blocking piece; performing wire drawing treatment on the optical fiber preform, and dynamically adjusting micro-positive pressure and negative pressure in the optical fiber preform and between the optical fiber preform and the sleeve at the same time; the device has the beneficial effects that the problem of low stacking efficiency of the hollow optical fiber caused by deformation of the capillary tube is avoided by setting the micro-positive pressure in the optical fiber preform 1 and the negative pressure between the optical fiber preform 1 and the sleeve 2, the manufacturing efficiency is improved, and the product quality is improved.

The invention relates to an optical fiber preform rod, a preparation method of an optical fiber and a high-bandwidth multimode optical fiber, a diffusion layer is deposited on a core layer in a deposition process to obtain an initial rod body, and then the initial rod body is directly fused and shrunk to obtain a solid preform rod; the viscosity of the rising layer of the diffusion layer is linearly reduced, and the refractive index of the rising layer is linearly increased; the viscosity of the descending layer of the diffusion layer is linearly increased, and the refractive index of the descending layer is linearly decreased; during melting shrinkage, the descending layer with the viscosity design serves as a passivation layer, and volatilization of germanium is reduced; the rising layer migrates high-concentration germanium to the falling layer under the action of thermal diffusion, and the diffusion layer is converted into an extremely narrow glass layer with a constant refractive index, so that the center distortion of a refractive index profile is avoided; a corrosion process is not needed in the melting shrinkage process, so that the cost and working hours are saved, and the production efficiency is improved; in addition, more than 80% of optical fibers manufactured by adopting the solid preform have no obvious refractive index profile center distortion, and the bandwidth performance of multimode optical fibers is improved.

The utility model relates to the technical field of glass fiber kiln wire drawing equipment, in particular to a yarn-cutting-free wire drawing machine capable of automatically feeding, replacing heads and pushing out transition yarns and a machine head of the yarn-cutting-free wire drawing machine. The wire drawing machine head comprises a machine head main shaft and an upper head-changing yarn pushing assembly; the upper head changing and yarn pushing assembly comprises an upper head changing transition ring, a yarn pushing mechanism, an upper head changing mechanism and a yarn pushing buffering mechanism. Through the cooperation between the machine head main shaft and the upper head-changing yarn pushing assembly, not only can the head-up and head-changing operations of the wire drawing machine be automatically completed, but also transition yarns formed in the head-up and head-changing processes can be automatically treated, so that the labor intensity is favorably reduced, the automation degree is improved, and the safety condition of man-machine cooperation is improved. Meanwhile, the whole circle of transition yarn can be recycled, the recovery value of the transition yarn is improved, and waste yarn and hairiness yarn are prevented from polluting the environment.

The invention discloses a method for preparing mineral wool from household garbage incineration fly ash through melting, and belongs to the technical field of incineration ash recycling. The method comprises the steps that the target fiber diameter daim and the target fiber length laim of the mineral wool are set; the method comprises the following steps: fully and uniformly mixing the incineration fly ash and an auxiliary additive, adding the mixture into a melting furnace for melting, detecting melt components, obtaining surface tension sigma, density rho and real-time viscosity mu of a melt, and substituting the melt components into a formula to calculate and obtain a rotating speed set value omega n of a centrifugal roller and a melting temperature control value Tx; the real-time temperature Ta of the melt is measured, and the melt temperature is adjusted by adjusting the power of the melting furnace to reach the melting temperature control value Tx; and introducing the molten glass into a centrifugal machine through a drainage groove, and adjusting the actual rotating speed of each roller to gradually reach a rotating speed set value omega n to prepare the mineral fiber cotton. According to the method, various complex process elements and key quality elements of the product in the process of preparing the mineral wool through incineration fly ash component blending and melting are accurately controlled, the quality of the mineral wool product is guaranteed, and the production cost is reduced.

The present invention discloses a wire drawing and plastic coating device for glass fiber production and processing, and specifically relates to the technical field of glass fiber production and processing, comprising a base, a first vertical frame is fixedly installed on one side of the top end of the base, a mounting seat is fixedly installed on the top end of the first vertical frame, a wire drawing mechanism is fixedly installed on the side of the mounting seat away from the first vertical frame, a second vertical frame is fixedly installed on the top end of the base close to the first vertical frame, a heating crucible used in conjunction with the wire drawing mechanism is fixedly installed on the top of the second vertical frame, a plastic coating part is fixedly installed on the bottom of the wire drawing mechanism, and a winding mechanism is fixedly installed on the top end of the base. The present invention, by arranging a wire drawing mechanism and using the plastic coating part and the winding mechanism in conjunction, performs wire drawing and plastic coating processing of glass fibers and performs continuous and uniform winding and winding of the glass fibers without stopping the machine, thereby reducing the generation of glass liquid accumulation, thereby improving the overall wire drawing efficiency of the glass liquid.

The invention belongs to the technical field of active optical fibers, and particularly relates to an anti-radiation erbium-ytterbium co-doped optical fiber core rod, a preform, an optical fiber and a preparation method thereof. The rare earth doped core rod of the anti-radiation erbium-ytterbium co-doped optical fiber provided by the invention comprises a rare earth doped fiber core and a step layer wrapping the fiber core, and the step layer contains a rare earth co-doped substance Ce2O3 and / or Nb2O5 besides a substrate SiO2 and co-doped substances GeO2 and P2O5. The variable-valence rare earth co-doped substance is doped in the step layer, part of rays are absorbed in advance in the Ce < 4 + > / Ce < 3 + > and / or Nb < 5 + > / Nb < 3 + > variable-valence balance process, the anti-radiation performance of the step layer is improved, part of rays are isolated in advance through the step layer to protect the fiber core, and then the overall anti-radiation performance of the optical fiber is improved.

The invention relates to an azimuth-angle-controllable anti-resonance hollow-core optical fiber and a preparation method thereof.The azimuth-angle-controllable anti-resonance hollow-core optical fiber comprises an outer cladding and an inner cladding, the inner cladding is composed of nested structure units, and the nested structure units are arranged in the circumferential direction of the inner wall of the outer cladding at intervals to form an air fiber core in the middle of an inner cavity; a filling layer is arranged between the inner wall of the outer wrapping layer and the nested structure units, the filling layer is formed by tightly arranging capillary tubes around the inner wall of the outer wrapping layer, and the nested structure units are located at the adjacent positions of the capillary tubes of the filling layer, or between the capillary tubes and the capillary rods, or between the capillary rods. In the optical fiber drawing process, the size of the capillary tube of the filling layer is adjusted in real time through pressure regulation, so that the azimuth angle of the nested structure unit is adjusted, the azimuth angle deviation of the nested structure unit is conveniently controlled on line, each nested structure unit is finally and accurately positioned in the inner cladding layer, and the transmission loss of the hollow-core optical fiber is reduced.

The invention provides a high-performance glass fiber composition and a method for preparing glass fiber by using the high-performance glass fiber composition, and the high-performance glass fiber composition comprises the following components in molar percentage: 61 to 67 percent of SiO2, 7.0 to 16.0 percent of B2O3, 0.1 to 16.0 percent of Al2O3, 3.0 to 12.5 percent of MgO, 0.02 to 9.0 percent of CaO, 0.01 to 5.0 percent of ZnO, 0.1 to 5.0 percent of ZrO2, 0.1 to 4.0 percent of TiO2, 0 to 3.0 percent of F2 and 0 to 4.0 percent of P2O5. Wherein F2 and P2O5 are not 0 at the same time. According to the invention, a plurality of specific component oxides with high ion field intensity and low polarizability are combined, and the proportion and addition amount of each component are controlled, so that the elastic modulus of the glass fiber is improved under the condition that the dielectric constant and dielectric loss are not improved, and the processing property of the glass fiber is ensured; the dielectric constant of the glass fiber is not more than 4.75, the dielectric loss is not more than 0.0035, and the elasticity modulus of the glass is not less than 75 GPa.

An anti-resonance element preform for producing an anti-resonant hollow-core fiber, comprising a first longitudinal axis, an ARE outer element designed in a circular arc-like manner, and an ARE inner element, wherein the ARE outer element and the ARE inner element are connected to one another along two connecting lines, which are arranged essentially in parallel to the first longitudinal axis. It is provided that the ARE outer element has an inner space, which is at least partially limited by an ARE outer wall and into which the ARE inner element, designed in a circular arc-like manner, protrudes at least partially.

The invention relates to the field of optical fiber drawing production and manufacturing, in particular to optical fiber drawing cooling equipment. The optical fiber drawing cooling equipment provided by the invention comprises an equipment main body, a water circulation device, an air supply device and a heat dissipation assembly, the equipment main body comprises a shell and an inner container, the inner container is embedded in the shell, and optical fibers pass through the inner container; the water circulation device is communicated with the shell, and the water circulation device is configured to cool the gas in the inner container and the shell; the air supply device is communicated with the inner container, and the air supply device is configured to introduce air into the inner container; the heat dissipation assembly is arranged in the inner container, and the heat dissipation assembly is configured to cool air in the inner container. According to the optical fiber drawing cooling equipment, heat of gas in the inner container is absorbed through the heat dissipation assembly, the gas usage amount can be reduced, and the cooling efficiency is improved.

The utility model belongs to the technical field of glass fiber production equipment, and particularly relates to a novel sleeve-connection-method wire drawing machine head of a modular structure. The device comprises a machine head main shaft, an upper wire ring, a pull rod seat, a broken bridge type expansion sheet, an on-shaft aluminum rotary drum and a plurality of sections of sleeved aluminum rotary drums, telescopic mechanism installation positions are arranged between the upper wire ring and the sleeved connection type aluminum rotary drum, between the pull rod seat and the on-shaft aluminum rotary drum, between the on-shaft aluminum rotary drum and the sleeved connection type aluminum rotary drum and between every two adjacent sleeved connection type aluminum rotary drums, and expansion piece telescopic mechanisms are arranged in the telescopic mechanism installation positions. And the broken bridge type expansion sheets are connected to the on-shaft aluminum rotary drum and the sleeve type aluminum rotary drum in a clamping and embedding manner. According to the novel sleeve connection method wire drawing machine head with the modular structure, the technical problems that the machining difficulty of a super-long aluminum rotary drum and an expansion piece is large, the machining quality cannot be guaranteed, and disassembly and assembly are difficult during assembly and maintenance are solved; and meanwhile, the control precision and efficiency are improved, and the power consumption of the wire drawing machine is reduced.

The invention discloses a wiredrawing and plastic coating device for glass fiber production and processing, and particularly relates to the technical field of glass fiber production and processing, the wiredrawing and plastic coating device comprises a base, a first longitudinal frame is fixedly mounted on one side of the top end of the base, and a mounting seat is fixedly mounted at the top end of the first longitudinal frame; a wire drawing mechanism is fixedly mounted on the side, away from the first longitudinal frame, of the mounting base, a second longitudinal frame is fixedly mounted on the side, close to the first longitudinal frame, of the top end of the base, a heating crucible used in cooperation with the wire drawing mechanism is fixedly mounted on the top of the second longitudinal frame, and a plastic coating part is fixedly mounted at the bottom of the wire drawing mechanism; according to the glass fiber drawing and plastic coating device, the drawing mechanism is arranged, the plastic coating part and the winding mechanism are used in cooperation, drawing processing and plastic coating processing of glass fibers are carried out, continuous and uniform winding and winding are carried out on the glass fibers, shutdown is not needed, generation of molten glass accumulation is reduced, the production efficiency is improved, and the production cost is reduced. Therefore, the overall wire drawing efficiency of the molten glass is improved.

The invention relates to the technical field of optical fiber preparation, and provides a preparation method of an optical fiber preform, which comprises the following steps: respectively fixing a head tube and a tail tube at two ends of a deposition lathe through a clamp; the deposition pipe is placed between the head pipe and the tail pipe, at least one end of the opposite ends of the head pipe and the deposition pipe and / or at least one end of the opposite ends of the deposition pipe and the tail pipe are heated, the to-be-flared heating ends of the head pipe, the deposition pipe and the tail pipe are subjected to flaring operation through a flaring component, and the flaring part of the flaring component is in a cone shape; welding the opposite ends of the head pipe and the deposition pipe and the opposite ends of the tail pipe and the deposition pipe; then core layers are formed on the head pipe, the deposition pipe and the tail pipe, and a core rod is formed after rod shrinkage; and sleeving the core rod to form the optical fiber preform. According to the invention, the formed flaring end is good in symmetry, so that the welding concentricity of the head pipe, the deposition pipe and the tail pipe is improved, the deposition of a core layer is uniform, and the quality of the optical fiber preform is improved.

A hollow-core microstructured fiber with subtractive mark units (2). The fiber comprises a cladding hollow-core sleeve (3) and a plurality of anti-resonant microstructured units (1) arranged on and attached to an inner wall of the cladding hollow-core sleeve (3), wherein each anti-resonant microstructured unit (1) is used for forming an air fiber core region having the size of an inscribed circle; the plurality of anti-resonant microstructured units (1) are rotationally symmetrical; one or more subtractive mark units (2) are provided on an outer side of a fiber core, such that an end-face structure of the hollow-core microstructured fiber has asymmetry; each subtractive mark unit (2) is a trench or a through hole; and the area of each subtractive mark unit (2) accounts for 0.002%-2% of the area of the cladding hollow-core sleeve (3). By means of each subtractive mark unit (2), each anti-resonant microstructured unit (1) can be marked and identified during drawing detection, and the geometric uniformity of the hollow-core microstructured fiber is determined.

The utility model belongs to the technical field of glass fiber production equipment, and particularly relates to a simple and replaceable reversing end sleeve at the two ends of a spiral groove of a groove drum. The device comprises an end sleeve and a tube sleeve, the end sleeve comprises an outer end sleeve and an inner end sleeve. The end sleeves are assembled at the two ends of the groove drum, and the drum sleeve is assembled on the groove drum and close to the end sleeves. A large reversing groove and a small reversing groove are defined between the end sleeve and the barrel sleeve. The groove drum can be maintained by replacing the reversing end sleeve, the technical problem that the whole groove drum needs to be replaced once the groove section at the reversing position of an existing groove drum is damaged is solved, and the production cost is saved, the equipment maintenance difficulty is lowered, and the shutdown overhaul time is shortened.

The invention provides an inorganic mineral fiber based on water-quenched slag and a preparation method thereof, and belongs to the field of inorganic mineral fiber materials. Titanium oxide powder is synthesized through tetrabutyl titanate and compounded with lanthanum oxide, the high temperature resistance and corrosion resistance of the fiber are improved through the synergistic effect, and the thermal stability and structural integrity of the lanthanum oxide-titanium oxide composite powder are improved through calcination treatment. Meanwhile, the dispersity and the interface bonding force of the powder are optimized through plasma treatment and silane coupling agent modification, so that the mechanical property and the heat resistance of the fiber are enhanced. In addition, phosphate and zirconium oxide are introduced to coat zinc oxide, so that the zinc oxide shows better fluidity and dispersity in a high-temperature melting process; the fiber surface is treated through magnesium chloride and cerium chloride, so that the corrosion resistance and high-temperature stability are improved; the microwave heating technology improves the surface treatment efficiency, avoids the thermal degradation problem of a traditional method, and ensures the long-term stability and performance of the fiber in a severe environment.

The utility model belongs to the technical field of glass fiber production, and particularly relates to a half-shaft type transmission dual-purpose thick and thin yarn machine head reciprocating wire drawing machine. The machine head reciprocating wire drawing machine comprises a rack, a first machine head, a first machine head reciprocating supporting mechanism, a machine head reciprocating mechanism, a second machine head, a second machine head reciprocating supporting mechanism, a creeling mechanism, a guide mechanism and a control system. According to the half-shaft type transmission dual-purpose thick and thin yarn machine head reciprocating wire drawing machine and the control method thereof, reciprocating linear motion of the first machine head and the second machine head can be achieved, automatic feeding, creeling, yarn breaking and yarn discharging work of glass fiber yarn can be automatically completed under dispatching of an electric control system, and the production efficiency is improved. The completion quality of wire drawing and winding is improved, and the production capacity of the wire drawing machine is improved. Meanwhile, different machine head structures can be configured for the wire drawing machine, so that the production requirements of roving and spun yarn can be flexibly met.

The invention provides an anti-resonance hollow-core optical fiber preform positioning mold and an assembling method thereof, the anti-resonance hollow-core optical fiber preform positioning mold comprises a first group of rod molds, a second group of rod molds and a third group of rod molds, the first group of rod molds are arranged in the central area of a sleeve and are used for forming a fiber core part of an optical fiber; the second group of rod molds are arranged in an anti-resonance area of the cladding and are used for forming a specific structure in the cladding of the optical fiber; the first group of rod molds and the second group of rod molds extend in a conical shape along the longitudinal axis direction of the optical fiber, namely, the outer boundary sizes of the first group of rod molds and the second group of rod molds are gradually changed along the longitudinal axis direction of the optical fiber, so that the first group of rod molds and the second group of rod molds have different cross section sizes at different positions of the optical fiber preform rod. The anti-resonance hollow-core optical fiber preform positioning mold provided by the invention is simple in structure and convenient to assemble and operate, and solves the technical problems of low positioning precision, low manufacturing efficiency, low repeatability and the like of the anti-resonance hollow-core optical fiber preform.

The invention belongs to the technical field of functional fibers, and particularly relates to a lava fine fiber and a preparation method and application thereof. The preparation method comprises the following steps: mixing lava ore and functional ore, and melting to obtain a melt; the melt is subjected to spraying, throwing and blowing integrated fiber forming, and a fiber semi-finished product is obtained; and mixing the fiber semi-finished product with a surface treating agent, and curing to obtain the lava fine fiber. A spraying, throwing and blowing integrated fiber forming method is adopted, the automation degree of lava fine fiber production is high, and the production labor cost is reduced; the capacity of the lava fine fiber is more than 10 times that of the basalt fiber; the energy consumption of the lava fine fiber per ton of finished product fiber is about 30% of that of the basalt fiber; the cost of the lava fine fiber per ton of finished fiber is about 35% of that of the basalt fiber. The functional ore is adopted, so that the melting temperature of the melt, the viscosity of the melt and the uniformity of the temperature of the melt are kept relatively stable, no crystallization crystal nucleus exists in the fiber, and the mechanical strength and the temperature resistance of the lava fine fiber are improved.

The invention discloses a device and a method for detecting dissolved gas in transformer oil based on micro-nano optical fiber, and the device comprises a gas sensor based on micro-nano optical fiber, an interference phase demodulation unit, an inversion unit, a photothermal effect excitation unit for generating and amplifying excitation light, and a detection unit for detecting dissolved gas in transformer oil based on micro-nano optical fiber, the intensity modulation unit is used for applying sinusoidal modulation to the amplified excitation light; coupling the excitation light subjected to sinusoidal modulation into the gas sensor, exciting a fundamental mode and a first high-order mode, generating an evanescent field in a waist region, and exciting gas in oil to generate a photothermal effect to change phases of the fundamental mode and the first high-order mode so as to form a mode phase difference; the detection light generated by the interference phase demodulation unit has interference between a fundamental mode HE11 and a first high-order mode HE12 in the gas sensor, is subjected to phase modulation of different degrees, and converts a modulation phase into an interference signal peak-to-peak value; and the inversion unit performs inversion by adopting a fitting formula according to the interference signal peak-to-peak value to obtain the concentration of the gas in the oil.

The utility model belongs to the technical field of glass fiber wire drawing machines, and particularly relates to a rear-end disc type wire drawing machine head capable of automatically adjusting and avoiding a wire drawing resonance area on line. The device comprises a machine head main shaft, a bearing seat, a cylinder body, a piston, a front seat, a rear seat, a barrel replacing body and a vibration reduction component, when the machine head operates, the bearing seat, the cylinder body, the piston, the front seat, the rear seat, the barrel replacing body and the vibration reduction component form an online rigid adjusting mechanism for the soft support of the machine head. The vibration of the machine head can be detected in real time through the vibration sensor and fed back to the PLC for control, the gas flow and / or the gas pressure are / is adjusted through the proportional valve PID, online real-time data collection and exchange are achieved, dynamic closed-loop control over the machine head rigidity adjusting mechanism on the bearing seat is achieved, and the vibration of the machine head is controlled within an acceptable range all the time.

The invention relates to the technical field of illumination optical fiber manufacturing, in particular to a photoelectric separation safety illumination line, a preparation method thereof and an illumination system. The optical fiber comprises a core layer, a wrapping layer and a protective layer, the wrapping layer is coated on the outer surface of the core layer and adopts a resin coating layer, and the protective layer is arranged on the outer surface of the wrapping layer; the photoelectric separation lighting line which is low in energy consumption, safe, reliable and high in lighting brightness is provided, through the photoelectric separation design, optical fibers are connected to LED lamp beads, optical signals are received, safety and environmental protection are achieved, environmental protection is achieved, no electric spark is generated, no electromagnetic interference is generated, no heat is generated, and therefore the surrounding environment cannot be affected; potential safety hazards are avoided; wireless energy transmission between the power supply module and the light source is realized by adopting a magnetic resonance coupling or electromagnetic induction technology, so that the electric shock risk caused by traditional wire connection is eliminated, and the safety of installation and use is improved.

The invention discloses a cooling device and glass fiber production equipment, and relates to the technical field of glass fiber production, and the cooling device comprises a spray pipe, an air supply pipeline, a control valve and a control system. Wherein the spray pipe is provided with a plurality of air nozzles distributed at intervals along the longitudinal direction, the plurality of air nozzles are used for spraying air flow towards one side deviating from the bushing so as to form an air vortex capable of reducing the temperature of the bushing and the root of the glass fiber on one side deviating from the bushing of the spray pipe, and the air supply pipeline is connected with the spray pipe and is used for supplying the air flow to the spray pipe; the control valve is arranged on the air supply pipeline and used for controlling the flow of airflow in the air supply pipeline, and the control system is in communication connection with the control valve and used for controlling the opening degree of the control valve according to the wire drawing operation state. The cooling device can stabilize the temperature of the bushing plate when the wire drawing operation is interrupted or the machine head is switched, reduces the number of waste products, and meets the cooling requirement of the bushing plate with high hole number for producing small-diameter fibers, so that the productivity and the economic benefit of a wire drawing operation unit are improved.

The invention discloses a glass fiber with high strength and strong tensile property and a manufacturing method thereof, the glass fiber is composed of 10-15 parts by weight of pyrophyllite, 10-15 parts by weight of quartz sand, 10-15 parts by weight of limestone, 10-15 parts by weight of dolomite, 10-15 parts by weight of borocalcite, 10-15 parts by weight of szaibelyite, 10-15 parts by weight of bactericide, 10-15 parts by weight of anti-ultraviolet agent, 10-15 parts by weight of graphene, 10-15 parts by weight of Kevlar fiber, 10-15 parts by weight of PBO fiber, 10-15 parts by weight of titanium dioxide and 10-15 parts 8-12 parts of quartz sand; 3-8 parts of limestone; 4-8 parts of dolomite; 10 to 18 parts of borocalcite; 11 to 17 parts of szaibelyite; 2-6 parts of a bactericide; and 3-8 parts of an anti-ultraviolet agent. The titanium dioxide and the aluminum oxide are added into the raw materials, the overall strength of the prepared glass fiber can be effectively improved, the graphene, the Kevlar fiber and the PBO fiber are added into the raw materials, the overall tensile property of the prepared glass fiber can be effectively improved, and the bactericide is added into the raw materials, so that the service life of the glass fiber is prolonged. By adding the anti-ultraviolet agent into the raw materials, the overall antibacterial property of the prepared glass fiber can be effectively improved, and the overall anti-ultraviolet property of the prepared glass fiber can be effectively improved by adding the anti-ultraviolet agent into the raw materials.