32results about How to "Guaranteed hold time" patented technology

The invention provides a wavelength division multiplexing digital communication experiment teaching system which comprises a signal sending terminal machine, a first WDM (Wavelength Division Multiplexer), a second WDM and a signal receiving terminal machine, wherein the signal sending terminal machine is used for converting original analog signals into optical signals; the first WDM is used for coupling the optical signals into an optical fiber transmission link; the second WDM is used for separating the superposed optical signals in different wavelengths from the optical fiber transmission link and transmitting the separated optical signals in different wavelengths to the signal receiving terminal machine; the signal receiving terminal machine is used for restoring the optical signals from the second WDM into the original analog signals. An all non-programming system design structure is adopted by the wavelength division multiplexing digital communication experiment teaching system, so that the high-quality transmission of two paths of signals at low error code rate can be realized; the later maintenance is convenient and the cost is low; students can more directly understand the knowledge, such as pulse code modulation, generation of a group synchronization code set, operation of inserting the generated group synchronization code set into a frame header of each frame data, CMI coding and decoding, group synchronization and data grouping and pulse code demodulation; the teaching application value is ultrahigh.

An envelope fabric of an insulation board and a preparation process for the same are disclosed, wherein the envelope fabric of an insulation board comprises a glass fibre cloth layer, a first aluminium foil layer, a PET (polyethylene terephthalate) layer, a first nylon layer, a second aluminium foil layer, a second nylon layer and a PE (polyethylene) layer which are orderly compounded from outside to inside. The insulation board and the preparation process for the same disclosed by the invention have the following advantages that: the outmost side of the insulation board uses glass fibre cloth for acting important flame-retardant performance as well as scratch-resistant and puncture-resistant performances; and the insulation board is greatly enhanced in alkali resistance and ageing-resistant performance due to the utilization of the glass fibre cloth on the outmost side. The envelope fabric of an insulation board disclosed by the invention uses double-layer aluminium foil and double-layer nylon, thereby enhancing the air impermeability of the envelope fabric of an insulation board and ensuring the duration time of the vacuum degree of vacuum thermal insulation board. Thus, the service life of the vacuum thermal insulation board is ensured.

The invention provides a method and equipment thereof for producing a caramel pigment special for mature vinegar. The equipment for producing the caramel pigment comprises a material pre-melting pot, a blowing-heater, a laminar flow reaction vessel, a flash evaporation pot, a coking material preparing pot and a finished product pot, and the components are connected by pipelines in order, wherein, the flash evaporation pot comprises a plate and frame transferring pot, an evaporation transferring pot and a condensation transferring pot. Sugar-containing substances are heated by using the blowing-heater, several elongated laminar flow pots with combined main body are used for insulation, high temperature materials enter into the pot from the lower parts of the laminar flow ports and flow out from an upper part of the separate pot, and the insulation time of a coking reaction is controlled by controlling number and flow of pots for materials to flow out, so that the coking reaction is completed.

The invention provides a method and equipment thereof for producing a caramel pigment. The equipment for producing the caramel pigment comprises a material pre-melting pot, a blowing-heater, a laminar flow reaction vessel, a flash evaporation pot, a coking material preparing pot and a finished product pot, and the components are connected by pipelines in order, wherein, the flash evaporation pot comprises a plate and frame transferring pot, an evaporation transferring pot and a condensation transferring pot. Sugar-containing substances are heated by using the blowing-heater, several elongated laminar flow pots with combined main body are used for insulation, high temperature materials enter into the pot from the lower parts of the laminar flow ports and flow out from an upper part of the separate pot, and the insulation time of a coking reaction is controlled by controlling number and flow of pots for materials to flow out, so that the coking reaction is completed.

The invention discloses a method for filling deep cooling container interlayer heat-insulating material, belonging to a method for placing diffluent solid material into a container and a device thereof, the method and the device for placing the solid material into a vacuum container in particular. The invention discloses a new technique in which nitrogen is used to replace air in a filling material storage tank and nitrogen pressure is used to fill heat-insulating material in the deep cooling container interlayer and discloses a specialized device matched with the technique. The bottom part of the filling material storage tank is of a conical structure, which facilitates filling the material. 0.2 MPa of nitrogen is infused into the store tank to prevent air from contacting with the filling material; the method of the invention ensures that in the process of filling, the filling material is not contacted with the air; meanwhile, multi-groups of store tanks can be filled simultaneously, thus filling speed and evenness are ensured; in addition, the method can replace the remaining air in the interlayer, ensuring future maintaining time of high vacuum in the interlayer; the method is simple and feasible and the equipment in the specialized device is easy to be manufactured.

The invention discloses a main kiln pipe of a rotary kiln. A kiln pipe is lengthened, the temperatures of a first heating group and the last heating group can be increased in consideration of thermal conduction of stainless steel under the condition that the heating groups are not added; by virtue of the heat conduction principle, the front end of the first heating group and the rear end of the last heating group are increasingly and slowly heated, so that temperature increment and temperature reduction speeds can be reduced, simultaneously time at maximum temperature is guaranteed, a broken phenomenon of a rolling material is prevented, and uniform pre-sintering is facilitated; and besides, striking devices are added in a plurality of positions, so that the phenomenon that powder sticks to the wall is greatly changed, the pre-sintering effect is guaranteed, and the difficulty of wall cleaning is reduced.

The invention relates to an automatic control system for use in the production process of caramel pigments. A central control system is arranged in a central control room, and flow meters and regulating valves are arranged on an in-out pipeline of a material pre-fusion tank and are connected with the central control system; a temperature sensor, a pressure sensor and a steam regulating valve are mounted on a heating pipeline of an ejection heater and are connected with the central control system; pH detectors are arranged in the material pre-fusion tank, a laminar flow reaction tank, a flash tank, a coking burdening tank and a finished product tank; the central control system comprises a PLC controller and a terminal computer. According to the automatic control system, the whole production operation control is finished in the central control room, so that the manual operating errors are avoided, and the operation accidents caused by human factors are reduced as much as possible.

An airtightness check method for a refrigeration and freezing device. A sealed space is provided inside a storage compartment of the refrigeration and freezing device; the sealed space is filled with nitrogen to fresh food therein. The check method comprises: measuring nitrogen concentration inside a sealed space (S302); determining a maintaining duration during which the nitrogen concentration inside the sealed space is maintained within a preset range of concentration to be measured (S304); calculating a duration difference between the maintaining duration and a preset statistical duration (S306); if the duration difference is greater than a preset threshold, determining that the airtightness of the sealed space does not satisfy a preset requirement (S310); and if the duration difference is smaller than or equal to the preset threshold, determining that the airtightness of the sealed space satisfies the preset requirement (S312). The check method can determine, on the basis of a duration required for a change in the nitrogen concentration in a sealed space, whether the airtightness of the sealed box satisfies a preset requirement, and can timely find out cases where sealed boxes are not tightly sealed. Also provided is a refrigeration and freezing device.

The invention relates to a quartz heating groove, comprising a quartz groove body and a thermocouple protecting pipe arranged in the quartz groove body, wherein the bottom of the quartz groove body is provided with a liquid discharging port; the quartz heating groove further comprises a heating resistance wire attached at the outer surface of the quartz groove body, a PP (polypropylene) plastic layer arranged at the periphery of the heating resistance wire and a quartz cotton layer filled between the heating resistance wire and the PP plastic layer; and the quartz heating groove further comprises a liquid discharging pipe which penetrates through the PP plastic layer, the quartz cotton layer and the heating resistance wire. In the quartz heating groove, the heat resistance wire is attached at the outer surface of the quartz groove body, and a quartz cotton insulating layer is also arranged at the outer surface of the quartz groove body, so that the insulating effect is good and the insulating time of a chip in the acid pickling process is guaranteed.

The invention provides a moisturizing essence which comprises the following raw material components: a phase A, a phase B and a phase C. The phase A comprises the following components: glycerol, 1, 3-propylene glycol, diglycerol, carbomer, xanthan gum, sodium hyaluronate, p-hydroxyacetophenone, 1, 2-hexanediol, ethylhexylglycerol, nicotinamide and the balance of deionized water, and the phase B comprises the following components: glycerol, 1, 3-propylene glycol, diglycerol, carbomer, xanthan gum, sodium hyaluronate, p-hydroxyacetophenone, 1, 2-hexanediol, ethylhexylglycerol, nicotinamide and the balance of deionized water. The phase B component is prepared from coconut oil alcohol-caprylate / caprate, propylene glycol laurate, ammonia-terminated polydimethylsiloxane, caprylic / capric triglyceride, meadowfoam seed oil, tocopheryl acetate, isononyl isononanoate and bis-diethoxy diglycol cyclohexane 1, 4-dicarboxylate; the C-phase component comprises arginine, a PEG / PPG-17 / 6 copolymer, castor oil, bergamot fruit oil, cedar bark oil, patchouli oil, squalane and Gangxi citrus peel oil; the invention provides moisturizing essence prepared from various natural plant extracts and a preparation method of the moisturizing essence.

A voltage stabilizing circuit with a holding time function, including a three-terminal integrated voltage regulator, an input filter capacitor and a rectifying diode. There is a holding time circuit connected in parallel between the input or output end of the three-terminal integrated voltage regulator and the common ground. The holding time circuit is composed of a charging resistor and a discharging diode connected in parallel and then connected in series with a charging and discharging capacitor for holding time. Two-terminal network, one end of which is the cathode of the discharge diode is connected to the input or output of the three-terminal integrated voltage regulator, the anode of the discharge diode is connected to the positive pole of the charging and discharging capacitor for the holding time, and the other end is the negative pole of the charging and discharging capacitor for the holding time. common connection. Realized the separation of the normal filter capacitor for the voltage stabilizing circuit and the charging and discharging capacitor for the holding time, and the charging and discharging capacitor for the holding time is an arbitrary capacity capacitor to ensure that the output voltage of the voltage stabilizing circuit meets the required holding time, effectively avoiding the power module due to selection The problem of difficult startup caused by large-capacity retention time capacitors.

The invention relates to a printing head substrate, a printing head, a printing head box and its printer, wherein the printhead substrate for inputting a data signal (DATA) in synchronization with a clock signal (CLK). The printing head substrate comprises: input terminals inputting the clock signal and data signal; shift registers inputting and maintaining the data signal in synchronization with the clock signal inputted from the input terminals; and a time lag adjuster arranged between an input terminal and the shift register to adjust a time lag of at least one of the clock signal or data signal. By virtue of adjusting the time lag by the time lag adjuster, setup time and hold time between the clock signal and the data signal inputted to the shift register is ensured.

The invention provides a compound moisturizing and repairing essence, which is characterized by comprising the following raw material components in percentage by mass: the A-phase component: 0.1-5% of tetrahydromethylpyrimidine carboxylic acid; the phase B component is prepared from the following components in percentage by weight: 0.1 to 5 percent of tea leaf extract, 1 to 6 percent of 1, 3-propylene glycol, 0.2 to 0.6 percent of p-hydroxyacetophenone, 0.3 to 0.7 percent of 1, 2-hexanediol, 0.01 to 0.2 percent of sodium hyaluronate, 0.1 to 2 percent of betaine and the balance of yeast green tea fermentation products; according to the compound moisturizing and repairing essence, the yeast green tea fermentation product is adopted to replace water in a traditional moisturizing essence process, the original nutritional effect of green tea is reserved, and the anti-oxidation effect of tetrahydromethylpyrimidine carboxylic acid is combined, so that the compound moisturizing and repairing essence has better moisturizing, anti-oxidation and anti-aging effects, promotes skin stability, and has a good moisturizing and repairing effect. The skin is in a healthy state for a long time.

The invention discloses a method for filling deep cooling container interlayer heat-insulating material, belonging to a method for placing diffluent solid material into a container and a device thereof, the method and the device for placing the solid material into a vacuum container in particular. The invention discloses a new technique in which nitrogen is used to replace air in a filling material storage tank and nitrogen pressure is used to fill heat-insulating material in the deep cooling container interlayer and discloses a specialized device matched with the technique. The bottom part of the filling material storage tank is of a conical structure, which facilitates filling the material. 0.2 MPa of nitrogen is infused into the store tank to prevent air from contacting with the filling material; the method of the invention ensures that in the process of filling, the filling material is not contacted with the air; meanwhile, multi-groups of store tanks can be filled simultaneously,thus filling speed and evenness are ensured; in addition, the method can replace the remaining air in the interlayer, ensuring future maintaining time of high vacuum in the interlayer; the method is simple and feasible and the equipment in the specialized device is easy to be manufactured.

The invention relates to an automatic control system for use in the production process of caramel pigments. A central control system is arranged in a central control room, and flow meters and regulating valves are arranged on an in-out pipeline of a material pre-fusion tank and are connected with the central control system; a temperature sensor, a pressure sensor and a steam regulating valve are mounted on a heating pipeline of an ejection heater and are connected with the central control system; pH detectors are arranged in the material pre-fusion tank, a laminar flow reaction tank, a flash tank, a coking burdening tank and a finished product tank; the central control system comprises a PLC controller and a terminal computer. According to the automatic control system, the whole production operation control is finished in the central control room, so that the manual operating errors are avoided, and the operation accidents caused by human factors are reduced as much as possible.

The invention discloses an aluminium alloy plate for a cartridge case, and a production method thereof. The aluminium alloy plate comprises the chemical elements: Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti and the balance Al; and the aluminium alloy plate containing the above elements is prepared through the procedures of smelting, casting, soaking treatment, face milling, hot rolling, annealing and the like.According to the aluminium alloy plate and the production method, the characteristics of low strength and high plasticity of aluminium alloy before solid solution heat treatment are utilized effectively; through high precision equipment and the rational processing technology of the aluminium alloy plate, the composition segregation of an aluminium alloy ingot is eliminated effectively, and the internal stress of the ingot is reduced; the chemical components are uniform; the produced aluminium alloy plate for an aluminium cartridge case is high in plasticity, strength and hardness, and the adverse effects of hydrogen and residues in metal materials are reduced and eliminated; and the high performance requirements for the cartridge case are met completely.

The invention discloses a high-strength carton without adhesive tape sealing, which includes a box body, a sealing mechanism, a connecting mechanism and a strengthening mechanism, wherein the bottom and top of the box body are provided with a sealing mechanism, and the sealing mechanism includes a sealing strip, a latch, a snap button and Fix the components, seal the top and bottom hinges of the straight line through the sealing mechanism, so that no glue and tape are needed for sealing, and the snap buttons can be set at the same time to ensure the tightness of the box seal, and can be disassembled and installed at any time, which is convenient for the recycling of the box use.

The invention discloses an aluminum alloy plate for a liquefied gas storage tank and a preparation method thereof. The aluminum alloy plate contains chemical elements such as Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, the balance Al, and the like. In the preparation method, an independent soaking treatment process is adopted, and through a good soaking control process, the composition segregation of a cast ingot is effectively eliminated, the inner stress of the cast ingot is reduced, and the chemical compositions are uniform; the aluminum alloy plate for liquefied natural gas prepared through the invention is an O-state finished product with the tensile strength reaching to 310 to 320 MPa, the ductility being 25 to 30 percent, the yield strength being 170 to 190 MPa, and the hardness being HV80 to 90; the aluminum alloy plate is good in roller arc performance, easy to cut and weld, free of cracking, attractive in surface after treatment, and free of quality defects such as pores and included slags in the thick plate.