4results about How to "Suitable for a wide temperature range" patented technology

The utility model discloses a kind of temperature and humidity test box temperature control system, including first refrigeration cycle unit, first temperature control cycle unit, second refrigeration cycle unit, second temperature control cycle unit and expansion cycle unit, second refrigeration cycle unit and first refrigeration cycle unit are connected in series, first temperature control cycle unit is connected and controls first refrigeration cycle unit, second temperature control cycle unit is connected and controls second refrigeration cycle unit, expansion cycle unit is connected on first, second refrigeration cycle unit.The utility model is suitable for wide temperature range, without heater-80~60 ℃ under condition;Temperature control precision is high, temperature fluctuation degree is ≤±0.02 ℃;Temperature rising speed is fast, compared with traditional mode and improve 10%~50%;Energy efficiency ratio is high, power consumption is small, maximum can save 50% power consumption.

This invention belongs to the field of spintronics technology, and specifically discloses a Hessler alloy with adjustable damping factor and its preparation method. The preparation method includes preparing a Hessler alloy thin film on a substrate; applying a voltage to a piezoelectric ceramic to put the piezoelectric ceramic in a stretched state; attaching the substrate with the Hessler alloy thin film to the stretched piezoelectric ceramic, with the easy magnetization axis direction [110] of the Hessler alloy thin film parallel to the stacking direction of the piezoelectric ceramic; removing the voltage to obtain a Hessler alloy with adjustable damping factor in a compressed state. This invention achieves low-power, reversible control of the damping factor of the Hessler alloy through piezoelectric strain, and is applicable to fields such as magnetic random access memory, spin logic devices, and flexible magnetic sensors.

The embodiment of the utility model provides a shaft sleeve, a shaft body kit and tufting equipment. The shaft sleeve comprises a connecting part and a deformation part, the connecting part is provided with a mounting hole, the mounting hole penetrates through the two opposite sides of the connecting part in the first direction, the shaft body penetrates through the mounting hole, and the radial size of the mounting hole is larger than that of the shaft body. The deformation part is connected to the connecting part, has flexibility or elasticity and is used for abutting against the shaft body. Wherein at least part of the deformation part is located outside the mounting hole, and the part, used for abutting against the shaft body, in the deformation part is located outside the mounting hole. According to the technical scheme, the requirement for the machining precision of the shaft body sleeve piece is lowered, the shaft body sleeve piece can operate normally, and using noise is reduced.

The invention discloses a polymer biological blocking remover and application thereof, and belongs to chemicals for oil fields. The polymer biological blocking remover is prepared from the following components in parts by weight: 0.1-5 parts of an organic acid coupling agent, 1-20 parts of a biocatalyst, 0.5-5 parts of an inducer, 0.01-5 parts of a bioactive aid and 65-98.39 parts of water. The gel breaker can rapidly degrade HPAM and related gel in a low-temperature environment of 50 DEG C or below, is high in gel breaking speed and small in dosage, and is suitable for oilfield sewage treatment and oily sludge treatment; the blocking remover does not contain dangerous components such as a strong oxidant and chlorobenzene, so that potential safety hazards such as fire, explosion, corrosion and highly toxic gas possibly caused by an oxidized blocking remover are avoided, and the blocking remover is safer and more environment-friendly; polymers are directly degraded through chemical action, and water-insoluble by-products are not generated like an oxidized blocking remover, so that secondary blocking of a stratum is effectively prevented; the product is good in stability, easy to store and transport, simple in field operation, simple in construction and suitable for large-scale application; the device is wider in applicable temperature range, lower in cost, higher in economic benefit and more beneficial to popularization and application.