Abstract:
The invention relates to monitoring and predicting the operation of a pump (30) arranged in a tank (3) for transporting a liquid product on board a ship (1), the pump (30) having a pump-head (31) arranged in the tank (3). A tripping risk parameter of the pump (30) is estimated at least as a function of a required net positive suction head of the pump (30), of the current filling level of the tank and of a current state of movement, which is a current sea state and/or a current state of movement of the ship, and a user is provided with an indication as a function of said tripping risk parameter. A particular application to ships for transporting a cold liquid product, more particularly to ships for transporting LNG of the type which consume the boil-off gas for their propulsion.
Abstract:
A hydrogen supplying device includes a liquid hydrogen pump, an evaporator, a pressure chamber configured to be filled with hydrogen gas flowing therein from the evaporator and to supply the filled hydrogen gas to a hydrogen engine, and a pump control unit configured to adjust a discharge flow rate of the liquid hydrogen pump based on both a flow rate of hydrogen to be supplied to the hydrogen engine and an actual pressure in the pressure chamber.
Abstract:
A hydrogen supplying device includes a liquid hydrogen pump, an evaporator, a pressure chamber configured to be filled with hydrogen gas flowing therein from the evaporator and to supply the filled hydrogen gas to a hydrogen engine, and a pump control unit configured to adjust a discharge flow rate of the liquid hydrogen pump based on both a flow rate of hydrogen to be supplied to the hydrogen engine and an actual pressure in the pressure chamber.
Abstract:
The invention relates to a fluid storage facility, the storage facility comprising a supporting structure (1) and a tank, the tank having at least one tank bottom wall fixed to the supporting structure (1), wherein the bottom wall has a structure with multiple layers superimposed in a direction of thickness, including at least one sealing membrane and at least one thermal insulation barrier arranged between the sealing membrane and the supporting structure (1), wherein the bottom wall has a sump structure (9) having a rigid container (10, 11) comprising a side wall (12), the container (10, 11) being arranged through the thickness of the bottom wall, and the sump structure (9) comprising at least one fixing means (15) designed to fix the rigid container (11) to the supporting structure (1) at a fixing point,
and wherein the at least one fixing means (15) is configured to allow the relative movement of the side wall (12) of the container (11) with respect to the supporting structure (1) in a transverse direction perpendicular to the side wall (12) at the fixing point of the container (11).
Abstract:
A method of preventing cross-contamination comprising providing a first tank having standard thread fittings, providing a second tank having reverse thread fittings, storing LPG in the second tank, and storing anhydrous ammonia in the first tank.
Abstract:
A fluid storage and pressurizing assembly includes a storage receptacle and a pump assembly. The storage receptacle includes an inner vessel defining a cryogen space for storing a fluid at a storage pressure and a cryogenic temperature, an outer vessel surrounding the inner vessel, and an insulated space between the inner vessel and the outer vessel, and a pump assembly. The pump assembly includes a pump having an inlet disposed within the cryogen space for receiving a quantity of the fluid from the cryogen space, and an outlet for delivering the fluid therefrom, and a pump drive unit for driving the pump, the pump drive unit being at least partially disposed within a space defined by the storage receptacle
Abstract:
Systems and methods for optimizing the recondensation of boiloff gas in liquid natural gas storage tanks are presented. In especially preferred aspects of the inventive subject matter, BOG from a storage tank is condensed using refrigeration content of a portion of LNG sendout in a direct or indirect manner, and the BOG condensate and LNG sendout portion are combined to form a subcooled stream that is then combined with the balance of the LNG sendout, to be fed to a high pressure pump. Contemplated recondensation operations advantageously occur without using otherwise needed large volume recondensers. Moreover, the condensing and subcooling operations are decoupled from the LNG sendout rate.
Abstract:
A drive system for a cryogenic pump is provided including a spool housing having a plurality of valves disposed therein about a pump axis and a tappet housing including a plurality of tappet bores, each tappet bore in communication with a respective one of the plurality of valves. A collection cavity collects hydraulic fluid from the tappet bores. A pump flange includes a fluid inlet and a fluid outlet. An inlet manifold directs hydraulic fluid received through the fluid inlet to each of the plurality of valves. An outlet manifold directs hydraulic fluid from each of the valves and the collection cavity to the fluid outlet.
Abstract:
A floating type LNG station floats on the sea and is used for refueling a ship or a marine structure using LNG. The floating LNG station comprises: a floating structure; an LNG tank which is prepared for storing LNG in the floating structure; an LNG line for discharging the LNG from the LNG tank to the ship or the marine structure; and an LNG pump which provides the LNG line with pumping force for discharging the LNG.
Abstract:
An apparatus, system and method for capture, utilization and sendout of latent heat in boil off gas (“BOG”) onboard a cryogenic storage vessel is described. A liquefied gas vessel comprises a cryogenic cargo tank onboard a liquefied gas vessel, the cargo tank comprising a liquefied gas and a BOG, a latent heat exchanger fluidly coupled to a stream of the liquefied gas and a stream of the BOG, wherein the latent heat exchanger transfers a heat between the BOG stream and the liquefied gas stream to produce a condensed BOG, means for combining the condensed BOG and the liquefied gas stream to obtain a combined stream, the means for combining the condensed BOG and the liquefied gas stream fluidly coupled to the latent heat exchanger, and a liquefied gas regasifier onboard the vessel and fluidly coupled to the combined stream, wherein the liquefied gas regasifier regasifies the combined stream.