26 results about "Cryostat" patented technology

The application discloses a multi-model adaptive low-temperature valve sealing performance testing device and method, and belongs to the technical field of valve detection. The device comprises: a first upper end cover of a low-temperature thermostat, wherein a to-be-tested low-temperature valve is installed on the first upper end cover through a valve support device; the valve support device is in flexible sealing cooperation with a bellows through an adjusting screw, so that the installation height and centering of the to-be-tested low-temperature valve are controlled, and low-temperature valves of different specifications are adapted; the low-temperature thermostat surrounds a first cold screen and a second cold screen; the bottom of the to-be-tested low-temperature valve is connected with one end of a cold-lead bridge through a pipe clamp and is surrounded by the first cold screen; a GM refrigerating machine comprises two-stage cold heads arranged in the low-temperature thermostat; the second cold screen surrounds the two-stage cold heads; the other end of the cold-lead bridge is connected with the two-stage cold heads; three helium supply devices are connected with the inlet and outlet of the to-be-tested low-temperature valve and the low-temperature thermostat respectively; and a vacuum pump unit is connected with the low-temperature thermostat. The application realizes rapid adaptation and accurate testing of low-temperature valves of multiple models.

Systems and techniques for facilitating scalable cryostats and cryogenic systems are provided. In one embodiment, the cryogenic system (300) may include a plurality of unit cells (304) coupled together, wherein each unit cell includes a trapezoidal frame (704) wherein the frames from adjacent unit cells are vacuum-sealed to form a continuous global vacuum enclosure, and wherein the unit cells are horizontally removable from or inserted into the plurality of coupled unit cells. Furthermore, each unit cell may include at least one temperature housing (508, 510, 512) wherein temperature housings from adjacent unit cells are coupled to form a continuous global temperature housing. Moreover, each unit cell may include at least one cryogenic payload (514) located within at least one temperature housing, which is cooled by at least one modified version of a standard dilution refrigeration unit.

This invention discloses a universal cryogenic valve heat leakage performance testing device and method, belonging to the field of valve testing technology. It includes: a cryogenic valve to be tested installed on the upper end of a cryogenic thermostat; the valve seat of the cryogenic valve to be tested connected to a valve heat exchanger via a pipe clamp; a first cold shield surrounding the valve seat; a valve support including a first flange adapted to different cryogenic valves to be tested; two cold shields installed inside the cryogenic thermostat, both with modular sidewall designs, flexibly adaptable to different cryogenic valves to be tested; two heaters connected to a temperature controller respectively installed on the heat sink and the pipe clamp; a GM refrigeration unit installed inside the cryogenic thermostat, including two-stage cold heads; a second cold shield surrounding the two-stage cold heads; a secondary cold head with a secondary heat exchanger connected to the valve heat exchanger; a helium supply device connected to the primary heat exchanger on the primary cold head; a helium recovery device connected to the valve heat exchanger; and a vacuum pump unit connected to the cryogenic thermostat. This invention improves testing efficiency and device utilization.

The application discloses a kind of low-temperature high-pressure environment under rock loading process longitudinal wave wave velocity measuring device and test method, belong to geotechnical engineering investigation test field, including press, force transmission cavity, cryostat, sleeve and confining pressure control system;The cryostat and press are fixedly connected with workbench;The inside of the cryostat is installed with the sleeve;The sleeve is connected with the confining pressure control system;The workbench is fixedly installed with pressure-bearing disc at the bottom of the cryostat;The anvil of the press and the pressure-bearing disc are all installed with force transmission cavity;Rock specimen is placed in sleeve in the application, and rock specimen is placed between two pressure columns;Adjust cryostat so that the internal temperature of cryostat reaches measurement requirement;Then control confining pressure control system to apply confining pressure, press drives force transmission cavity and pressure column to give rock specimen top pressure;The longitudinal wave wave velocity of rock specimen is detected by ultrasonic detector probe.

This invention discloses a conduction-cooled superconducting isochronous cyclotron accelerator, belonging to the technical field of superconducting isochronous cyclotron accelerators. It includes a main accelerator support, which is a base frame structure composed of several vertical supports. Vertically arranged hydraulic lifting systems are fixedly installed on the side walls of each set of vertical supports. A first magnetic yoke is fixedly installed on the top of the main accelerator support, and a second magnetic yoke is fixedly installed on the output end of the hydraulic lifting system. By employing direct conduction cooling technology using a cryostat to replace the traditional liquid helium immersion cooling system, the structural redundancy problem of superconducting cyclotron accelerators relying on complex liquid helium refrigeration units is solved. While maintaining the magnetic field strength, it completely eliminates bulky components such as liquid helium pools, recondensers, and multi-layered insulated pipelines. This not only significantly reduces the system height and sealing complexity but also avoids the high operation and maintenance costs caused by dependence on liquid helium resources.

This invention discloses a dual-rail device for a pathological cryostat, aiming to solve the problems of insufficient lubrication, accelerated wear, and decreased sectioning accuracy caused by low-temperature environments in existing technologies. The key technical points are: it includes a frame, a cryostat chamber, a feed module, and a reciprocating lifting mechanism. The feed module is fixed to a vertical guide seat, and its front end penetrates the cryostat chamber, with a sliding sealing component at the penetration point. The vertical guide seat has a left side, a right side, and a through groove connecting both sides. A left guide rail is provided on the left side, and a right guide rail is provided on the right side. A left slide rail is slidably mounted on the left guide rail, and a right slide rail is slidably mounted on the right guide rail. The sliding seat is divided into a left sliding seat, a right sliding seat, and a connecting rod. The left sliding seat is fixedly connected to the left slide rail, and the right sliding seat is fixedly connected to the right slide rail. The two ends of the connecting rod are respectively fixed to the left and right sliding seats and pass through the through groove.

Provided is a superconducting magnet that can be operated with AC in a state where AC loss is reduced. This superconducting magnet includes: a superconducting coil 102 that is housed in a cryostat 101; and a superconducting current transformer 103 that is housed in the cryostat 101 and includes a primary winding 104 connected to an AC power supply 109 and a secondary winding 105 connected to the superconducting coil 102. The superconducting coil 102 and the secondary winding 105 are configured by winding a superconducting cable 20 in which superconducting wires 10, 90 are spirally wound along the axis of a core material 9.

The utility model discloses a kind of stirling machine cryogenic box, including box, refrigeration assembly is arranged in box, foam layer and heat insulation layer are arranged in box, heat insulation layer is located in foam layer, and heat insulation layer is provided with an object frame in, and low-temperature cavity is formed in object frame;The output end of refrigeration assembly is through foam layer and heat insulation layer, and heat insulation layer is provided with conduction component between object frame, and the energy generated by refrigeration assembly is evenly conducted on object frame by conduction component;Conduction component includes conducting frame and heating plate, heating plate is set to the inside of conducting frame, object frame is located in conducting frame, and the bottom of its object frame is in contact with heating plate;Conducting frame is integrally formed structure and is overall frame structure, and conducting frame includes rectangular bottom plate, several conducting strips are fixed on the four outer sides of rectangular bottom plate, conducting strip has bending portion on it, and several conducting strips of the same end outside of rectangular bottom plate have the same gap between;Heating plate is placed in the cavity bottom formed by the inside of bottom plate and conducting strip.

This disclosure provides an assembly apparatus for an arc-shaped superconducting magnet, relating to the field of particle accelerator assembly. The assembly apparatus includes: a drive module for providing power to drive the arc-shaped superconducting magnet along a predetermined trajectory into a cryostat; a support module connected to the drive module for supporting the arc-shaped superconducting magnet; a sensing module disposed on the surface of the superconducting magnet for detecting operating parameters during the movement of the arc-shaped magnet; and a control module communicatively connected to the drive module and the sensing module for controlling the operating state of the drive module based on the operating parameters fed back by the sensing module. This method, through the coordinated operation of the drive module, sensing module, and control module, transforms the assembly process of the arc-shaped superconducting magnet from an invisible, feedback-free, and purely experience-based manual operation into an intelligent operation mode with full-process visual detection, significantly improving the assembly safety and positioning accuracy of large-scale cryogenic superconducting equipment.

In a general aspect, an assembly is configured for thermalizing quantum circuits at low temperature and providing them shielding from magnetic fields and infrared radiation. In some implementations, an assembly to house a component of a quantum processing unit in a cryogenic environment, includes a plate, a magnetic shielding structure, a first thermalization pathway, and a second, independent thermalization pathway. The plate is configured to reside in thermal contact with a thermalization stage of a cryostat. The magnetic shielding structure defines an interior volume to contain a component of a quantum processing unit. The component resides on a circuit board. A first thermalization pathway provides thermal contact between the plate and the magnetic shielding structure. The second, independent thermalization pathway provides thermal contact between the plate and the circuit board.

A magnetohydrodynamic propulsion device (MHD), having a superconducting magnet, a cryogenic refrigeration system adapted to cool the superconducting magnet, a vacuum cryostat surrounding the superconducting magnet, an electrode pair, and a housing adapted to mount the MHD to a vessel, wherein the superconducting magnet and the electrode pair are adapted to receive electrical power and generate a magnetic field, an electric field, and an electrode current density to produce thrust in an electrically conducting medium in contact with the MHD.

A superconducting magnet device includes a superconducting coil disposed in a cryogenic environment; and a protection diode disposed in the cryogenic environment and connected to the superconducting coil, the protection diode being disposed such that a direction of a magnetic field generated by the superconducting coil on a pn junction surface of the protection diode forms an angle within about 30 degrees with respect to a normal line of the pn junction surface.

The invention relates to an infrared radiation detector (10a) comprising: – a cryostat (11) equipped with a cold finger (12) and a window (13) transparent to the infrared radiation to be detected; – a cold plate (14) mechanically fixed and in heat exchange with the cold finger (12); – a detection block (15) in heat exchange directly or indirectly with the cold plate (14); and – a cold screen or diaphragm (16), mechanically fixed and in heat exchange with the cold plate (14), and suitable for limiting stray radiation; the cryostat (11) incorporating at least one zeolite material (17a-17d) having a pore opening of between 5 and 8 Ångströms, configured to maintain a vacuum of less than 10-2 mbar in the cryostat (11) continuously throughout the lifetime of the infrared radiation detector (10a), even when the cold finger (12) is not cooled. Figure for the summary: Fig 2

The present invention provides a cryostat end fitting adapted to provide a vacuum tight interface between components across which interface a cryogen flows, the cryostat end fitting comprising a cryostat including a thermoplastic inner conduit, a connector at an end of the inner conduit comprising a cylindrical sidewall secured to or formed integrally with the end of the inner conduit, the connector further comprising a cylindrical coupling having a compliant interface with the cylindrical sidewall.

The utility model discloses a temperature control structure of liquid freezer belongs to liquid freezer technical field, including evaporimeter barrel body, be provided with the barrel body opening on evaporimeter barrel body, be provided with fixed assembly on the barrel body opening, and be connected with temperature detector through fixed assembly, and temperature detector includes the detection head and connecting wire that are connected with each other, and the detection head is fixed in fixed assembly, and its detection end extends outward from the barrel body opening, and the connecting wire is placed in evaporimeter barrel body. This structure utilizes temperature detector to carry out temperature detection to guarantee the temperature of the smoothie made by the ice sand machine can maintain in certain range value, ensures the smoothie making effect, simultaneously, the setting of fixed assembly can strengthen the assembly stability of temperature detector, avoids the problem that temperature detector is impacted by the smoothie and falls off from evaporimeter barrel body, ensures the use stability of temperature detector.

Within the vacuum enclosure of the cryostat, multiple temperature stages form an ordered row in the main direction. These are cooled to their respective cryogenic cooling temperatures by stages of a stepwise cooling system. The first dilution refrigerator comprises a first distiller and a first mixing chamber, the first distiller being positioned on the first distiller flange and the first mixing chamber being positioned on the first mixing chamber flange. The second dilution refrigerator comprises a second distiller and a second mixing chamber, the second distiller being positioned on the second distiller flange and the second mixing chamber being positioned on the second mixing chamber flange. The first distiller flange is thermally isolated from the second distiller flange, and the first mixing chamber flange is thermally isolated from the second mixing chamber flange. The second dilution refrigerator is configured for a greater cooling capacity than the first dilution refrigerator.

An apparatus is provided for reel-to-reel assessment of superconducting tapes (for example, REBCO CC tape) at low temperatures (for example, less than or equal to 65K). For example, the apparatus may be a force magnetometer. The apparatus may include one or more reels and pulleys used to move the superconducting tape into and out of a cryostat. The apparatus may also include a permanent magnet or electromagnet provided at a low temperature proximate to the tape. The magnet induces screening currents in the tape. The apparatus may also include an electric motor used to drive movement of the tape relative to the magnet. A tension meter may be provided to measure a tension of the tape. Alternatively, a current provided to the motor may also be measured. The apparatus may be used to measure the critical current at various positions on the superconducting tape at the low temperatures.

This application relates to a cryogenic chamber for drop hammer impact testing, comprising: an insulated chamber body with an internal storage space and a clearance hole on its top surface; a removable cover movably mounted on the insulated chamber body, having a first position and a second position, wherein when the removable cover is in the first position, it covers the clearance hole to seal the storage space; and when the removable cover is in the second position, the clearance hole is open; a position adjustment component mounted on the insulated chamber body and connected to the removable cover, the position adjustment component being used to switch between the first and second positions of the removable cover; and a temperature control device mounted on the insulated chamber body for regulating the temperature within the storage space. This invention solves the problems of insufficient rigidity, time-consuming disassembly, large temperature fluctuations, and easy interference with the drop structure in existing cryogenic chambers during impact testing.

A high-speed global-shutter thermal imaging system includes a cryostat, the cryostat including a store of coolant and a detector assembly, a vacuum pump, and an output channel to a analog-to-digital converter (ADC).

This invention discloses a cryostat for stem cell exosomes used to improve premature ovarian failure. When the controller receives an instruction to retrieve a sample from the target storage cavity, it controls a three-dimensional electro-mechanical motion mechanism to move up, down, left, and right until the sample storage cabinet is directly opposite the target storage cavity. Then, the controller controls the three-dimensional electro-mechanical motion mechanism to move backward until the sample storage cabinet reaches its rear limit position, bringing it close to the target storage cavity. The controller then de-energizes the first electromagnetic lock, causing it to separate from the first magnetic adsorption sheet. Next, the controller controls an electro-mechanical pushing mechanism to push the sample holder out of the storage cavity and into the sample storage cabinet. The electro-mechanical pushing mechanism then resets backward. Finally, the controller controls the three-dimensional electro-mechanical motion mechanism to move forward to its front limit position, causing the sub-door corresponding to the target storage cavity to reset under gravity. The first electromagnetic lock is then energized and adsorbs the first magnetic adsorption sheet. Subsequently, after a set time, the controller de-energizes the second electromagnetic lock, causing it to separate from the second magnetic adsorption sheet, and the flip-top door opens to retrieve the sample.

A circulating refrigeration system without liquid helium consumption. The system comprises: a liquid-helium-free refrigerating machine (40); a copper shielding tube (10), one end of the copper shieldi