A gas cooling equipment is provided comprising a refrigerant storage device, a cooling processing device, and a dehydrating device. The dehydrating device is disposed on an air intake end of the cooling processing device for dewatering a high temperature gas. The invention is adopted to solve problems arising from the pressure increasing and the quartz cassettes breaking easily due to moisture in a low temperature portion of the high temperature gas discharged from a high temperature oven entering the cooling processing device, thereby improving manufacturing efficiency and reducing the manufacturing cost.

The invention provides a device for full-automatic, ultra-low pressure, fractionation-free and non-destructive extraction of water, including a control box, an extraction part, an ultra-low temperature cold trap and a transmission device, wherein the control box and the extraction part are located at the top of a cabinet, the ultra-low temperature cold trap is located inside the cabinet, a touch screen is arranged on the control box, a temperature control meter is arranged on a side face of the control box, the extraction part includes an upper layer plate, a middle layer plate, a bottom plate and a test tube, the bottom plate is fixedly installed on the cabinet, the test tube is accommodated in the ultra-low temperature cold trap, and the transmission device is fixedly installed on the bottom plate. The invention has the beneficial effects of being able to extract a plurality of samples at the same time, so the extraction efficiency is high; and no liquid nitrogen or organic solvent is required, thereby reducing the environmental pollution.

A helium management control system for controlling the helium refrigerant supply from a common manifold supplies cryogenic refrigerators with an appropriate helium supply. The system employs sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators depending on the computed aggregate cooling demand of all of the cryogenic refrigerators. An appropriate supply of helium is distributed to each cryopump by sensing excess and sparse helium and redistributing refrigerant accordingly. If the total refrigeration supply exceeds the demand, or consumption, excess refrigerant is directed to cryogenic refrigerators which can utilize the excess helium to complete a current cooling function more quickly. If the total refrigeration demand exceeds the total refrigeration supply, the refrigerant supply to some or all of the cryogenic refrigerators will be reduced accordingly so that detrimental or slowing effects are minimized based upon the current cooling function.

A helium management control system for controlling the helium refrigerant supply from a common manifold supplies cryogenic refrigerators with an appropriate helium supply. The system employs sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators depending on the computed aggregate cooling demand of all of the cryogenic refrigerators. An appropriate supply of helium is distributed to each cryopump by sensing excess and sparse helium and redistributing refrigerant accordingly. If the total refrigeration supply exceeds the demand, or consumption, excess refrigerant is directed to cryogenic refrigerators which can utilize the excess helium to complete a current cooling function more quickly. If the total refrigeration demand exceeds the total refrigeration supply, the refrigerant supply to some or all of the cryogenic refrigerators will be reduced accordingly so that detrimental or slowing effects are minimized based upon the current cooling function.

A regenerative refrigerator includes: a regenerator unit that precools a working gas; and an expander that cools the working gas by expanding the working gas precooled by the regenerator unit. The regenerator unit includes a zinc based regenerator member formed of zinc or an alloy containing zinc as a main component of the alloy. A first stage regenerator optionally includes a high temperature part including a first regenerator member and a low temperature part including a second regenerator member different from the first regenerator member. A second stage regenerator optionally includes a high temperature part including a second regenerator member and a low temperature part including a third regenerator member different from the second regenerator member. The second regenerator member optionally includes a zinc based regenerator member formed of zinc or an alloy containing zinc as a main component of the alloy.

A method of operating a cryopump includes: cooling a cryopanel from an initial temperature higher than a cryogenic temperature for a vacuum pumping operation to the cryogenic temperature by using a refrigerator; and after the cooling, initiating the vacuum pumping operation, in which the cooling includes providing a cooling relief effect selectively to a high-temperature stage of the refrigerator.

A method of operating a cryopump includes: cooling a cryopanel from an initial temperature higher than a cryogenic temperature for a vacuum pumping operation to the cryogenic temperature by using a refrigerator; and after the cooling, initiating the vacuum pumping operation, in which the cooling includes providing a cooling relief effect selectively to a high-temperature stage of the refrigerator.

In conventional structures, a space between a dual cooling tank is vacuum insulated, and a cooling part is cooled via a highly thermally conductive material connected to an inner container. Such structures are affected by heat infiltrating into the highly thermally conductive material and the cooling part. For instance, in cases when liquid nitrogen is used as a coolant, it takes approximately 30 minutes for the temperature to reach 120 C. Even in cases when a significant amount of time has been spent, the temperature only reaches approximately 150 C., and thus falls significantly short of the temperature of liquid nitrogen, namely 196 C. Accordingly, an anti-contamination trap and a vacuum application device according to the present invention are provided with a structure in which a device-internal cooling part in the vacuum application device is cooled, and are characterized by being provided with: a cooling tank filled with a coolant for cooling a cooling part; and a cooling pipe extending from the cooling tank to the vicinity of the cooling part. The anti-contamination trap and the vacuum application device are further characterized in that: the coolant is supplied to an end of the cooling part; and a tube for releasing air bubbles inside the cooling pipe is inserted so as to extend to the cooling part.

A cryogenic cooling apparatus comprises a supply gas line and a return gas line adapted to be coupled to a compressor. A coupling element is positioned in gaseous communication with the supply and return gas lines, the coupling element being adapted in use to supply gas to a mechanical refrigerator so that the pressure of said supplied gas is modulated by the coupling element in a cyclical manner. A sensing system is used to monitor the operational state of the mechanical refrigerator and a control system modulates the frequency of the cyclical gas pressure supplied by the coupling element in accordance with the monitored operational state. The mechanical refrigerator has a first cooled stage and a second cooled stage, the second cooled stage being adapted to be coupled thermally with target apparatus to be cooled. A selectively coupleable thermal link is provided for thermally coupling the first cooled stage of the mechanical refrigerator to the second cooled stage in dependence upon the operational state of the mechanical refrigerator. A method of use of the apparatus is also disclosed. The apparatus and method have particular application in a Magnetic Resonance Imaging system.

A heating assembly (100) for a chromatography system (1000) comprises primary and auxiliary heating tubes (110H, 120H) made of an electrically conductive material, and forming at least part of an inner and outer tube, respectively. The inner and outer tubes are mechanically and electrically interconnected. The primary and auxiliary heating tubes axially overlap at least along a subsection length (L) of the inner and outer tubes for transferring auxiliary heat from the auxiliary heating tube to the primary heating tube. The heating assembly comprises a pair of electrodes (130, 131), arranged for forming an electrical path (180) running in series through the primary and auxiliary heating tubes. The auxiliary heating tube comprises an extendible section (125) such as a bellows to axially extend or shorten for compensating any difference in thermally induced contraction or expansion, respectively, between the inner and outer tubes.