A vaporizer apparatus for vaporizing liquefied natural gas (LNG) into vapor-phase natural gas for injection into an oil or gas well, comprises a blower assembly, a burner section, a heat exchanger section, and at least one flammable gas concentration sensor. The blower assembly comprises a primary blower configured to move air along an air flow path through the vaporizer apparatus and a flame arrestor configured to allow passage of the air into the vaporizer apparatus and impede passage of a flame out of the vaporizer apparatus. The burner section comprises an enclosure having an upstream end coupled to the blower assembly and a downstream end, and a burner inside the enclosure and in the air flow path for heating the air. The heat exchanger section comprises an enclosure having an upstream end coupled to the downstream end of the burner section enclosure and a downstream end, and at least one LNG heat exchange tube inside the enclosure and in the air flow path, and thermally communicable with the air heated by the burner. The at least one flammable gas concentration sensor is in the air flow path upstream of the burner and is configured to detect whether a concentration of a flammable gas in the air is above a flammable gas concentration set point.

A Dewar system is configured to liquefy a flow of fluid, and to store the liquefied fluid. The Dewar system is disposed within a single, portable housing. Disposing the components of the Dewar system within the single housing enables liquefied fluid to be transferred between a heat exchange assembly configured to liquefy fluid and a storage assembly configured to store liquefied fluid in an enhanced manner. In one embodiment, the flow of fluid liquefied and stored by the Dewar system is oxygen (e.g., purified oxygen), nitrogen, and/or some other fluid.

An electrical harness for a composite object comprises a first electrical layer mainly embedded in the composite of the object, a second electrical layer mainly outside the composite of the object, and a connection device electrically connecting the first layer and the second layer.

According to some embodiments, a cryogenic storage tank includes a manway formed in a body of the cryogenic storage tank. An inner manway lid is coupled to an inner wall of the cryogenic storage tank and disposed over at least a portion of the manway. An outer manway lid is coupled to an outer wall of the cryogenic storage tank and disposed over at least a portion of the manway. The inner and outer manway lids are configured to retain pressure within the cryogenic storage tank.

According to some embodiments, a cryogenic storage tank includes a manway formed in a body of the cryogenic storage tank. An inner manway lid is coupled to an inner wall of the cryogenic storage tank and disposed over at least a portion of the manway. An outer manway lid is coupled to an outer wall of the cryogenic storage tank and disposed over at least a portion of the manway. The inner and outer manway lids are configured to retain pressure within the cryogenic storage tank.

A device and to a process supply a patient-side coupling unit (9) with a gas mixture. The patient-side coupling unit is connectable to a patient (Pt). A first duct (K.1) guides a first gas component (air) from a first source (2) to a mixing point (8). A second source (20) provides a second gas component, which is guided to a front pressure inlet (V.3) of a pressure reducer (1). The pressure reducer provides the second gas component (O2) at a back pressure outlet (V.2). A time course of pressure at the back pressure outlet follows a time course of pressure at a reference point (11, 28.1) in the first duct. A second duct (K.2) guides the second gas component from the back pressure outlet to the mixing point. An inhalation duct (K.30) guides the gas mixture from the mixing point to the patient-side coupling unit.

A storage tank includes a tank roof and a tank sidewall. At least one opening is located in at least one of the tank roof or the tank sidewall. A pipe extends through the at least one opening, the pipe having a sleeve assembly positioned around the pipe. The sleeve assembly also extends through the opening. The sleeve assembly includes a sleeve, at least one layer of insulation, and an inner flange. The inner flange is located on a first end of the sleeve and is coupled to the pipe. The sleeve, in turn is coupled to the tank such that the inner flange is located within the storage tank. The at least one layer of insulation is positioned in an annulus between the pipe and the sleeve.

An LNG tank is a single-shell LNG tank having one shell and at least one pipe extending from the LNG tank to a tank connection space of the LNG tank. The shell of the LNG tank is substantially surrounded by insulation. The LNG tank has at least one bellow connection surrounding at least part of the length of the at least one pipe for connecting the at least one pipe extending from the LNG tank to the tank connection space. A system for connecting at least one pipe between an LNG tank and a tank connection space thereof is also provided. At least one pipe extends from the LNG tank to the tank connection space and which LNG tank is a single-shell tank having one shell. The at least one pipe is connected between the LNG tank and the tank connection space by at least one bellow connection.

A cryogenic tank arrangement includes a tank body enclosing a storage space for storing liquefied gas. The tank arrangement has a safety valve arrangement in which at least one pressure relief valve is directly connected to the storage space of the tank body. There is a pressure relief valve arranged directly connected to at least two locations on a same face of the tank body.

A portable cryogenic container includes a porous material configured to absorb a cryogenic coolant such as liquid nitrogen. The coolant-absorbing material at least partially defines a storage cavity in the container that is configured to accept and support a cassette or other type of contents container in which a product to be cryogenically stored is contained. With cryogenic coolant absorbed into the container, the temperature within the storage cavity can be maintained sufficiently close to the boiling point of the cryogenic coolant to preserve post-thaw viability of the stored product for several hours.