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35results about How to "Ensure long-term reliability" patented technology

Compression system with second vapor injection function, air conditioning system and judgment and control method of compression system

ActiveCN105371514AJudging whether there is liquid in the supplementary airAvoid dilutionMechanical apparatusCompression machines with non-reversible cycleEngineeringAir conditioning
The invention provides a compression system with a second vapor injection function. The compression system comprises a compressor (1), a second vapor injection pipeline (2) and a gulp valve (3) arranged on the second vapor injection pipeline (2), wherein according to the flow direction of a refrigerant, a first pressure detection device (4) and a first temperature detection device (5) are arranged at the inlet end of the gulp valve (3) on the second vapor injection pipeline (2); a second temperature detection device (6) is arranged at the outlet end; and the system further comprises a second pressure detection device (7) and a third temperature detection device (8) arranged on an exhaust pipeline (11) of the compressor (1). According to the invention, whether the second vapor injection of the compressor carries liquid or not and the situations that the vapor injection carries a small amount of liquid and the vapor injection carries a large amount of liquid can be accurately judged, so that the situations that the lubricating oil in the compressor is diluted, the compressor is abrased, and even liquid impact occurs due to the fact that the second vapor injection carries liquid are avoided. The invention further relates to an air conditioning system with the compression system and a judgment and control method.
Owner:GREE ELECTRIC APPLIANCES INC

High reflection gain type photovoltaic packaging glue film and application

The invention relates to a high reflection gain type photovoltaic packaging glue film and applications; the packaging glue film comprises a package layer and a reflection layer; the package layer is 200-500 micron in thickness, and comprises a first body resin, a modified auxiliary agent, a UV auxiliary agent, an anti-heat and oxygen aging agent and an initiator, wherein said materials are mixed and fused at 60-200 DEG C, thus forming the film through the film casting technology; the reflection layer is 5-200 micron in thickness, and comprises a second body resin, an auxiliary resin, a first filling, a second filling, a modified auxiliary agent, a diluents, a UV auxiliary agent, an anti-heat and oxygen aging agent and an initiator, wherein said materials are mixed and coated on the surface of the package layer, and solidified at the temperature of 30-150 DEG C so as to form the reflection layer. The preparation technology is simple and low in cost, and the product is excellent in performance, thus providing effective gain effect for a double-face crystal silicon cell assembly, providing basis for cost optimization of one side crystal silicon cell assembly gain type packaging material, and simultaneously providing stability and reliability of the crystal silicon photovoltaic assembly in outdoor long time applications.
Owner:HANGZHOU FIRST APPLIED MATERIAL CO LTD

Magnetic module as well as assembly method and rotor thereof

The invention provides a magnetic module as well as an assembly method and a rotor thereof. The magnetic module comprises a magnetic iron core, wherein a magnetic steel accommodating piece is connected to one side of the magnetic iron core through a connection piece, and magnetic steel is arranged between the magnetic iron core and the accommodating piece. The magnetic module buckles the magnetic steel on one side of the magnetic iron core through the magnetic steel accommodating piece, and the magnetic steel accommodating piece and the magnetic iron core are connected into a whole module through the connection piece, so that the structure is stable, the integrity is not affected by the temperature, longtime reliability of magnetic steel fixation is realized, leaked magnetism is small, and the genetic steel utilization rate is high. According to the magnetic module as well as the assembly method and the rotor thereof, the rotor comprises a rotor support, a plurality of positioning keys are fixed on the rotor support, a plurality of magnetic modules are connected to each positioning key, a positioning key groove matched with each positioning key is formed in the magnetic iron core of the magnetic module and is located in the middle position of one side, opposite to the magnetic steel accommodating piece, of the magnetic iron core, and the positioning keys are located in the positioning key grooves.
Owner:XINJIANG GOLDWIND SCI & TECH

Method for first-pulse optimization in Q-switched solid-state lasers and Q-switched solid state laser

The invention relates to a method for generating a pulse train (2) comprising a plurality of individual pulses (3) having a desired pulse characteristic of the individual pulses (3) by means of a Q-switched solid state laser (1) having a modulator (9) for influencing the pulse characteristic of the individual pulses (3), having the following process steps: generating the individual pulses (3) of a pulse train (2) with a pulse characteristic by applying a temporal initial modulation signal (16a) to the modulator (9); detecting the pulse characteristic of the individual pulses (3) of the generated pulse train (2), generating a modified modulation signal (16) based on the detected and desired pulse characteristic and generating a pulse train (2) having a modified pulse characteristic by applying the modified modulation signal (16) to the modulator (9); repeating the last process step until a predetermined break-off criterion has been fulfilled with regard to an optimal modulation signal (16); and generating a pulse train (2) with the desired pulse characteristic of the individual pulses (3) thereof by applying the optimal modulation signal (16) to the modulator (9). The invention further relates to a Q-switched solid state laser (1) suitable for performing said method.
Owner:TRUMPF LASER MARKING SYST

Local discharging sensor combining graphene diaphragm with micro optical fiber interference cavity and detection method based thereon

The invention discloses a local discharging sensor combining a graphene diaphragm with a micro optical fiber interference cavity and a detection method based thereon. The local discharging sensor comprises a tunable laser device (1), a laser device wavelength control module (2), an optical fiber circulator (3), monomode optical fiber (4), the micro optical fiber interference cavity (5), a photoelectric detector (6), a signal line (7), a filter (8) and a data collection card (9). A multilayer graphene membrane is adopted, so that detection sensitivity of the sensor is improved; on the basis ofstructure optimization design of the multilayer graphene membrane, the multilayer graphene membrane is enabled to adapt to local discharging detection frequency band requirements; a polyimide coatingis adopted to prolong service life of the multilayer graphene membrane; femtosecond laser is adopted to process the micro optical fiber interference cavity inside optical fiber, and a static-state working point is stabilized on the basis of laser device wavelength control. On the basis of optimization design of a detection device mounting mode, original working environment of electrical equipmentis unaffected during mounting of the local discharging sensor.
Owner:CHONGQING UNIV

Cured film and positive photosensitive resin composition

The invention provides a cured film and a positive type photosensitive resin composition unlikely to cause a decrease in light emission luminance or shrinkage of pixels and high in long term reliability.
[Solution] The invention provides a cured film comprising a cured product of a photosensitive resin composition including an alkali-soluble resin (a), a photoacid generating agent (b), at least one compound (c) selected from the group consisting of cyclic amides, cyclic ureas, and derivatives thereof, and a thermal crosslinking agent (d), the thermal crosslinking agent (d) containing an epoxy compound, oxetanyl compound, isocyanate compound, acidic group-containing alkoxymethyl compound, and/or acidic group-containing methylol compound, and the total content of the compound (c) in the cured film being 0.005 mass % or more and 5 mass % or less. The photosensitive resin composition comprises the alkali-soluble resin (a), photoacid generating agent (b), compound (c), thermal crosslinking agent (d), and an organic solvent (e), the compound (c) accounting for 0.1 part by mass or more and 15 parts by mass or less relative to 100 parts by mass of the alkali-soluble resin (a), and the organic solvent (e) accounting for 100 to 3,000 parts by mass relative thereto.
Owner:TORAY IND INC

Screening and detecting method for ultrasonic water flow detection transducers

The invention discloses a screening and detecting method for ultrasonic water flow detection transducers. The screening and detecting method includes the following steps: 1), pre-checking piezoelectric ceramic elements and connecting electrode outgoing wires in a short circuit way; 2), putting the piezoelectric ceramic elements into a thermostat, simulating environment temperature and disconnecting two electrode outgoing wires; 3), assembling the ultrasonic water flow detection transducers; 4), checking the ultrasonic water flow detection transducers and connecting the electrode outgoing wires in a short circuit way; 5), putting the ultrasonic water flow detection transducers into the thermostat, simulating the environment temperature and then taking out the ultrasonic water flow detection transducers to be fixed; 6), performing load tests to the ultrasonic water flow detection transducers; and 7), performing appearance and electrical property tests to the ultrasonic water flow detection transducers. Compared with the prior art, the screening and detecting method has the advantages that cumulative stress of piezoelectric ceramic pieces can be released in advance; and the large stress generated due to strain during assembly of the piezoelectric ceramic pieces can be released to guarantee working stability and long-term operational reliability of the ultrasonic water flow detection transducers.
Owner:NINGBO WATER METER

Ecological retaining structure of expansive soil slope and construction method

ActiveCN111809655AGuarantee the strength of the slopeReduce expansion and contraction damageArtificial islandsUnderwater structuresEnvironmental resource managementReinforced concrete
The invention discloses an ecological retaining structure of an expansive soil slope. The ecological retaining structure comprises rectangular retaining splicing blocks with a length-width ratio lessthan 1.5 to 1, a three-dimensional net, green plants, anchor rods and flexible connection structures, and the surface layer of the slope is covered with the three-dimensional net; the retaining splicing blocks are arranged above the three-dimensional net, and the anchor rods sequentially penetrate through the retaining splicing blocks and the three-dimensional net from top to bottom to anchor theretaining splicing blocks to the surface of the slope; the retaining splicing blocks are divided into reinforced concrete layers, rubber layers and water absorbing and moisturizing layers from top tobottom in the thickness direction, and vertical through holes are formed in the middles of the retaining splicing blocks; the green plants are planted in the through holes; and the flexible connectionstructures are arranged between the retaining splicing blocks and used for forming the flexible connection between the retaining splicing blocks. The invention further discloses a construction methodof the ecological retaining structure of the expansive soil slope. According to the ecological retaining structure, by changing the retaining form and connection mode, and combining with green vegetation, the strength of the slope can be ensured, and meanwhile the expansion and contraction damage easily caused by the engineering characteristics of the expansive soil is reduced.
Owner:CENT SOUTH UNIV +1

Magnetic pole module of rotor, assembly method thereof and rotor

The invention provides a magnetic pole module, an assembly method thereof and a rotor. The magnetic pole module provided by the present invention includes a magnetic pole core, a magnetic steel container is connected to one side of the magnetic pole core through a connecting piece, and a magnetic steel is arranged between the magnetic pole core and the magnetic steel container. The magnetic pole module provided by the present invention buckles the magnetic steel on one side of the magnetic pole core by using the magnetic steel containing part, and uses the connecting part to connect the magnetic steel containing part and the magnetic pole core to form an integral module. The structure is stable and the integrity is not affected by temperature. , It is beneficial to realize the long-term reliability of the magnetic steel fixing, the magnetic leakage is small, and the utilization rate of the magnetic steel is high. The rotor provided by the present invention includes a rotor bracket on which a plurality of positioning keys are fixed, and each positioning key is connected with a plurality of magnetic pole modules, and the magnetic pole core of the magnetic pole module is provided with positioning key slots matching the positioning keys , the positioning keyway is located in the middle of the side of the magnetic pole core opposite to the magnetic steel holder, and the positioning key is located in the positioning keyway.
Owner:XINJIANG GOLDWIND SCI & TECH
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