Helium recovery plant for recovering helium from and redistributing helium to a helium-using equipment, the recovery plant being adapted to form a closed system together with the helium-using equipment and comprising: - a recovery module connectable to the helium-using equipment, said recovery module being adapted to collect helium-gas from such equipment, - a pressurized storage module connected to said recovery module, said storage module being adapted to filter and store the helium coming from the recovery module, - a purification module connected to the storage module, and adapted to remove all impurities from the helium that comes through a gas management module from the storage module before the helium reaches the liquefaction module, wherein the purification module comprises at least one purifier, the purifier being integrated with closed-cycle refrigerators of one or more stages - a liquefaction module comprising a number of liquefiers and being adapted for liquefying gas-phase helium coming from the purification module and generating liquid helium through the liquefiers at a liquefaction rate, and wherein the liquefiers comprise a container similar to a dewar and at least one compressor and one closed-cycle refrigerator of one or more stages arranged in the dewar, so that liquid helium is liquefied by the refrigerator inside said dewar, and means for regulation of the vapor pressure found in the dewar in thermal equilibrium with the liquid, the regulation means being configured for reaching a maximum efficiency of the liquefaction process by adapting the liquefaction rate to the gas recovery rate by an electronic control of the vapor pressure, said liquefaction module being connectable to the helium-using equipment and being adapted to redistribute liquid helium to said equipment - a set of target distribution management modules that integrate gas analyzers and distribution media, respectively located between the liquefaction module and the purifiers and between the storage module and the purifiers, and adapted to manage the distribution of helium which, respectively, flows from the purifiers and the liquefiers, - a number of gas management and distribution modules respectively, adapted to supply helium to the purification module and the liquefaction module using a system of valves and sensors, and - a tank of helium gas, which is located in parallel to the storage module, adapted for storing helium gas of high purity and providing such pure gas to the distribution management modules. - a recovery module connectable to the helium-using equipment, said recovery module being adapted to collect helium-gas from such equipment, - a pressurized storage module connected to said recovery module, said storage module being adapted to filter and store the helium coming from the recovery module, - a purification module connected to the storage module, and adapted to remove all impurities from the helium that comes through a gas management module from the storage module before the helium reaches the liquefaction module, wherein the purification module comprises at least one purifier, the purifier being integrated with closed-cycle refrigerators of one or more stages - a liquefaction module comprising a number of liquefiers and being adapted for liquefying gas-phase helium coming from the purification module and generating liquid helium through the liquefiers at a liquefaction rate, and wherein the liquefiers comprise a container similar to a dewar and at least one compressor and one closed-cycle refrigerator of one or more stages arranged in the dewar, so that liquid helium is liquefied by the refrigerator inside said dewar, and means for regulation of the vapor pressure found in the dewar in thermal equilibrium with the liquid, the regulation means being configured for reaching a maximum efficiency of the liquefaction process by adapting the liquefaction rate to the gas recovery rate by an electronic control of the vapor pressure, said liquefaction module being connectable to the helium-using equipment and being adapted to redistribute liquid helium to said equipment - a set of target distribution management modules that integrate gas analyzers and distribution media, respectively located between the liquefaction module and the purifiers and between the storage module and the purifiers, and adapted to manage the distribution of helium which, respectively, flows from the purifiers and the liquefiers, - a number of gas management and distribution modules respectively, adapted to supply helium to the purification module and the liquefaction module using a system of valves and sensors, and - a tank of helium gas, which is located in parallel to the storage module, adapted for storing helium gas of high purity and providing such pure gas to the distribution management modules.