33results about How to "Large temperature control range" patented technology

The invention provides a temperature control cabinet of electronic equipment, comprising a cabinet body, wherein the outer side of the cabinet body is provided with a temperature adjusting device which is used for adjusting the temperature in the cabinet body; an air inlet is arranged at the lower part of one side surface of the cabinet body, and an air outlet is arranged at the upper part of the other side surface; and a fan is arranged at the position of an air opening. The temperature control cabinet also comprises a control device; and the control device comprises a detection module, a communication module and a control module. The temperature control cabinet provided by the invention has the beneficial effects that the electronic equipment with higher requirement for temperature is arranged by areas in a base station machine room, the small-power temperature adjusting device is utilized for independently carrying out temperature control on the electronic equipment, the operation time of a high-power air conditioner in the base station machine room is reduced, the energy-saving effect is achieved, the service life of the electronic equipment is prolonged, and the operating cost is reduced.

The invention belongs to the technical field of aero-engine test, and particularly relates to a low-temperature test temperature control system and method for an aero-engine nozzle oil source pump. Atpresent, low-power compressor units are often selected on test benches. However, in the case of high-power heating of the nozzle oil source pump, the refrigeration capacity of the low-power compressor units is difficult to balance the heat generation of the test piece. The invention provides the low-temperature test temperature control system and method for the aviation engine nozzle oil source pump, which adopt a liquid nitrogen-fuel heat exchange system to cool down the fuel and cooperate with a temperature control mechanism to achieve rapid response refrigeration, have the advantages of small space usage, large cooling power, wide temperature control range, less equipment investment and easy adaptability improvement, can achieve fast power follow-up, and are high in accuracy of fuel temperature control and small in temperature fluctuation when used for low-temperature performance test of the high-power nozzle oil source pump.

The invention provides a passive thermal-sensitive fire extinguishing starter. The fire extinguishing starter is provided with a housing; a magnetic power source consisting of a magnetic bar and an armature arranged on the neutral axis position of the housing; the magnetic bar can move relatively to the armature; a spring is mounted at the tail part of the magnetic bar; a pull rod is fixedly connected to the tail end of the magnetic bar; the tail part of the pull rod is extended from the upper end surface of the housing; and a fusible alloy locating structure capable of axially locating the pull rod is arranged at the extending part. The magnetic bar is located in an upper contracting position in the housing by the fusible alloy at the normal temperature; and when the ambient temperature reaches the preset temperature, the fusible alloy melts, so that the magnetic bar is released and moves downwards under the action of the spring, and then, the magnetic bar passes through the armature to generate the induction starting current, thereby completing the task of starting the passive thermal-sensitive fire extinguishment. The invention systematically integrates the fusible alloy and the magnetic power source, thereby not only expanding the temperature-control range of a starter, but also greatly simplifying the structure and further improving the operating reliability of a magnetic power source.

The invention belongs to a potentiometric titration system and specifically relates to an environment-controllable temperature control potentiometric titration system and an application method thereof. The environment-controllable temperature control potentiometric titration system comprises a liquid adding system, a determining system, a stirring system, a weighting system used for sensing the mass change of the liquid adding system, a temperature control system and a titration environment controlling system, wherein the temperature control potentiometric titration system comprises a titration cup used for mixing liquid; the liquid adding system and the determining system are both connected with the titration cup; the stirring system and the temperature control system are both arranged on the titration cup; and the titration environment controlling system comprises a visual environmental cabinet used for supplying a controllable environment. The environment-controllable temperature control potentiometric titration system disclosed by the invention has the advantages of wide temperature control scope, high stability, high applicability, convenient operation, simple equipment, low cost, and the like, and is especially suitable for the accurate temperature-control potentiometric titration for the colored, colloid or turbid liquid under specific environment, such as, anaerobic environment.

The invention discloses a large X-ray inspection system detector structure, and belongs to the field of security inspection equipment. The detector structure comprises three parts of a base assembly,a detection assembly and a heat dissipation/heating assembly, wherein the heat dissipation/heating assembly comprises an air channel loop consisting of an air inlet channel and an air outlet channel,a refrigeration/heating air conditioning unit arranged at the inlet of the air inlet channel, and an enhanced loop system mounted on the air channel loop. The main structure of the invention adopts analuminum alloy or a steel I-shaped beam, and an outer cover adopts a thin steel plate, so that the processing performance of the detector is improved, the weight of the detector structure is reduced,and the detector cost is lowered; the detector module can be independently adjusted, the two-nut fastening is adopted in a separate adjusting structure, and the maintainability of the detector is improved; and the enhanced loop system is installed on the air channel loop, so that the fluidity of air in the elongated air channel is improved, the temperature control effect is better, and the environment adaptability is higher.

The invention provides a tuning fork resonant type measurement device and method for platelet contractile force. The tuning fork resonant type measurement device comprises a constant temperature sealing bin, a metal shielding case arranged inside the constant temperature sealing bin, a tuning fork sensor mounted in the metal shielding case, an injection hole, communicated with the interior of themetal shielding case, for blood to be detected and a reagent, a tuning fork driving and detection circuit connected with the tuning fork sensor, a temperature control circuit connected with the constant temperature sealing bin, a microcontroller controlling the tuning fork driving and detection circuit and the temperature control circuit for communication, and an intelligent terminal communicatedwith the microcontroller. The device can accomplish the accurate measurement on the platelet contractile force by only using a trace amount of blood.

The invention relates to a silicon oil fan clutch, comprising a shell, an oil storage cover, a front cover, a main drive shaft and a main drive plate arranged on the main drive shaft, wherein, the front cover is connected with the shell in a sealing way, the oil storage cover is arranged at the front end of the front cover and forms an oil storage cavity with the front cover, and the main drive plate, the front cover and the shell form a gearing cavity; besides, the front cover is provided with an oil outlet channel; an oil inlet end arranged at the oil outlet channel is provided with a valve plate which is arranged at the end surface of the front cover by an elastic work piece, and the valve plate can open the oil outlet channel as force is imposed upon the valve plate by the elastic work piece; the middle part of the front cover is provided with a through hole, a guide tube end is arranged in the through hole by a guide tube bearing, a thimble is arranged in the guide tube end and pushes against the valve plate, and a guide tube joint is externally connected with a fluid source controlled by an engine control unit. Compared with the prior art, the silicon oil fan clutch of the invention has the advantages of high precision, quick response and wide range of temperature control.

The invention provides a quartz glass tube rod production furnace and a quartz glass tube rod production method. The quartz glass tube rod production furnace comprises a quartz smelting furnace, a base metal fixing assembly, a receiving mechanism and a central positioning system, wherein a lifting device is mounted above the quartz smelting furnace; the base metal fixing assembly can be installed on the lifting device after being connected with the quartz base metal so as to hoist the quartz base metal above the quartz smelting furnace, and the base metal fixing assembly comprises a replaceable connecting piece which can be replaced according to the specification of the quartz base metal to be connected; the receiving mechanism is positioned below the quartz smelting furnace and is used for receiving the quartz glass tube rod output by the quartz smelting furnace and slowly pulling out the quartz glass tube rod at a constant speed; and the central positioning system is arranged below the quartz smelting furnace and is used for positioning the formed quartz glass tube rod. According to the structure, the production of various types of quartz glass tube rods can be realized by replacing the replaceable connecting piece. The quartz base material is not in contact with the crucible, so that the quartz smelting furnace can realize discontinuous and small-batch production, and the purity and the performance of the quartz glass tube rod are improved.

The invention discloses a phase-change material and metal micro-expansion-based dual-drive space thermal switch for a spacecraft. The dual-drive space thermal switch comprises a heat sink plate, a phase-change material storage shell, a phase-change material, a storage shell cover plate and a support shell, the heat sink plate is installed at the lower end of the supporting shell, the upper end ofthe phase-change material storage shell is connected with the upper end of the supporting shell, and the lower end of the phase-change material storage shell is located in the supporting shell. The phase-change material is positioned in the phase-change material storage shell; the storage shell cover plate is hermetically mounted on an opening in the upper end of the phase-change material storageshell and is sealed; the outer diameter below the upper end of the phase-change material storage shell is smaller than the inner diameter of the supporting shell; the phase-change material storage shell is filled with the phase-change material; the lower end of the heat sink plate is tightly attached to the inner side end of a heat dissipation panel of the spacecraft spaceborne instrument; and thephase-change material storage shell and the storage shell cover plate are tightly attached to the outer side hot end face of a heating device in the spacecraft spaceborne instrument. According to theinvention, the problem of insufficient driving force in the existing equipment is effectively solved, and higher thermal conductivity when the thermal switch is switched on and lower thermal conductivity when the thermal switch is switched off can be ensured.

The invention provides a miniature test clamp used for a disk laser device for controlling shell temperature. The miniature test clamp comprises a set of double-row fourteen-pin disk laser device clamps, a standard thermistor, a thermoelectric refrigerating device, a thermal conducting copper block, a thermal insulation gasket, a DB25 pin interface, a red and green LED indicating lamp and a set of control circuit board. The device is compact in structure and small in size, shell temperature of the laser device can be accurately controlled and temperature control range exceeds that of a conventional water cooling device. Meanwhile, conventional welding of LD pins is substituted by pressing of the LD pins so that the power-up process of the laser device is simplified, and the risk of damage to the laser device caused by welding can be reduced. Besides, great protection measures can be taken on the disk laser device under temperature control by the device so that an emergency protection function performed on the disk laser device under measurement for power-up misoperation of the disk laser device under measurement and out of control of a temperature control system when shell temperature does not reach the set temperature can be avoided.

The invention relates to the technical field of alloy manufacturing, in particular to a preparation method of a NiMnGaCoCu memory alloy thin strip. The method comprises the steps: (1) melting, specifically, pure Ni, Mn, Ga, Co and Cu metal raw materials are selected and placed in a copper mold with a water cooling device in a vacuum smelting furnace, and after vacuumizing, the copper mold is filled with inert gas, then the metal raw materials are overturned and smelted under the protection of the inert gas, and full cooling is carried out on a stirred uniform alloy solution in the water cooling copper mold to obtain a NiMnGaCoCu alloy ingot; (2) first heat treatment; (3) rapid quenching, specifically, the heat-treated NiMnGaCoCu alloy ingot in a melting belt throwing furnace with the rotating speed of 10 m/s-30 m/s is rapidly quenched to prepare an alloy thin strip; and (4) secondary heat treatment is performed on the alloy thin strip to obtain the NiMnGaCoCu memory alloy thin strip. The prepared memory alloy thin strip has the characteristics of high toughness, ordered columnar grain arrangement and adjustable lattice torsion resistance.

The invention discloses an arrangement structure of an electric heating plate, which comprises a heating plate, and a plurality of rows of first S-shaped grooves are formed in the back surface of theheating plate in an array manner; an S-shaped right-angle wire column heating pipe is mounted in each first S-shaped groove; a cast aluminum gland is fixed on the top surface of each first S-shaped groove through a screw; the cast aluminum gland is provided with a second S-shaped groove opposite to the first S-shaped groove; the S-shaped right-angle wire column heating pipe is clamped in a cavityformed by the first S-shaped groove and the second S-shaped groove; two open grooves are formed in one side of the cast aluminum gland; the two ends of the S-shaped right-angle wire column heating pipe are led out from the open grooves; the arrangement mode of the electric heating plate specifically comprises the following steps that firstly, the heating plate is arranged, and secondly, the cast aluminum gland is arranged; thirdly, the S-shaped right-angle wire column heating pipe is installed; and finally, a temperature control system is arranged. According to the arrangement structure of theelectric heating plate, the manufacturing cost of equipment is reduced, the manufacturing, mounting and overhauling processes are simplified, and the temperature control precision is improved.