11 results about "Helium" patented technology

The application provides a helium isotope low-temperature adsorption separation system and method, and relates to the technical field of isotope separation. The helium isotope low-temperature adsorption separation system comprises an adsorption column, a low-temperature control unit, an adsorbent regeneration unit, a helium isotope gas outlet control unit, a helium isotope gas inlet and recovery control unit and a system purging unit, and the low-temperature control unit comprises a refrigerator, a vacuum cover, a first-stage cold screen, a second-stage cold screen, a first-stage anti-radiation screen, a second-stage anti-radiation screen, an inlet pipe and an outlet pipe. The first-stage anti-radiation screen is arranged in the interior of the vacuum cover, the first-stage cold screen is arranged at the opening of the first-stage anti-radiation screen, and the first-stage cold screen is provided with a mounting hole. The helium isotope low-temperature adsorption separation system has the characteristics of precise temperature control in a wide temperature range, precise adsorption pressure control, fast rewarming desorption speed, high adsorption efficiency, gas recyclability, simple structure and convenient operation, and has great significance for the separation research of helium isotopes.

The invention provides a lunar surface trace helium-3 enrichment detection device and method.The lunar surface trace helium-3 enrichment detection device comprises a movable lunar rover, the lower end of the movable lunar rover is provided with a sampling enrichment drill bit, and the upper end of the movable lunar rover is provided with a detection device; the sampling and enriching drill bit is of an axis hollow structure, a plurality of small holes penetrating through the drill bit wall are formed in the bottom end of a drill bit blade, and the tail ends of the small holes are connected with a fine mesh screen for screening and enriching lunar soil fine particles with the particle size smaller than hundreds of microns; the fine mesh screen is communicated with the axis area of the drill bit, and a heating wire is arranged in the axis area. According to the enrichment detection device and method for the extremely trace helium-3 on the lunar surface, by integrating the heating, filtering and enriching functions and combining the mass spectrometer or the neutron detector, high-precision detection of the extremely trace helium-3 in lunar soil can be achieved, and the problem that low-concentration helium-3 is difficult to accurately measure in the traditional technology is solved. The functions of crushing, heating, filtering, enriching and detecting are integrated, the operation process is simplified, the equipment complexity and the failure rate are reduced, and the device is suitable for the extreme environment of the lunar surface.

The invention discloses a helium isotope abundance measurement device and method based on a static gas mass spectrum, and solves the technical problem that the measurement result of the existing measurement device has deviation. The measuring device comprises a main pipeline, a high-temperature purification device, a low-temperature cold trap device, a normal-temperature purification device, a mass spectrometer, a vacuum gauge and a molecular pump set, wherein a first closed volume is formed between the first valve and the second valve; the high-temperature purification device is connected with the main pipeline through a fourth valve; the vacuum gauge is connected with the main pipeline through the third valve, and a second closed volume is formed among the second valve, the third valve, the fourth valve and the fifth valve; the low-temperature cold trap device is connected with the main pipeline through a seventh valve, and the molecular pump set is connected with the main pipeline through a sixth valve; the normal-temperature purification device is arranged on the main pipeline and is positioned between the eighth valve and the ninth valve; and the mass spectrometer is a static gas mass spectrometer, is positioned at the tail end of the main pipeline and is connected with the main pipeline through a ninth valve.

The application relates to a filament fault diagnosis system for a helium mass spectrometry air tightness detection device, which comprises an ionization chamber arranged in a vacuum environment and a detector in communication with the ionization chamber, the ionization chamber comprises a filament and a permanent magnet, the filament generates electrons through electric current and is arranged in a magnetic field of the permanent magnet, the permanent magnet collides the electrons and combined molecules to form charged ions, the detector converts the charged ions into an electric signal, the system further comprises a gas analysis module and a signal analysis module, the gas analysis module is close to the filament and is used for detecting the metal vapor concentration released by the filament in real time, the signal analysis module is electrically connected with the detector and is used for monitoring the fluctuation of the electric signal in real time, when the metal vapor concentration released by the filament exceeds a preset first threshold value and the fluctuation of the electric signal exceeds a preset second threshold value, the system automatically diagnoses that the filament has a fault and reminds an operator, so that the fault source of the air tightness detection device, i.e. filament aging, can be found and diagnosed in time.

The invention provides a hydrogen-helium fusion quantum gravitational force control method of an atomic nucleus energy quark alternating magnetic field, and the method comprises the steps: constructing an alternating magnetic field to act on a hydrogen-helium fusion process, and employing a quantum gravitational field to carry out the regulation and control of phase space behaviors of energy quanta, including the deflection, spinning, entanglement and anti-particle behaviors of the energy quanta. The stability and controllability of energy release in the fusion process are achieved, the efficiency and controllability of hydrogen and helium fusion are remarkably improved by introducing the quark-level alternating magnetic field and quantum gravity regulation and control mechanism, accurate regulation and control of atomic nuclei in the phase space are achieved, and energy loss is reduced; quantum entanglement and energy quantum state conversion are induced through an alternating magnetic field, and the stability of fusion reaction is enhanced; the quantum gravitational field is utilized to carry out spatial distribution optimization on energy quantum, and the energy output density is improved; the system has good system integration and expansibility, and can be applied to a plurality of high-tech fields such as power systems, national defense industry, aerospace, ecological chemical industry and the like.

The invention discloses a helium bubble size and density analysis method based on slow positron beam chromatography, which comprises the following steps of: 1) measuring Doppler broadening (DBS) of a material to be measured by using a slow positron beam, and calculating a low momentum annihilation ratio S and a high momentum annihilation ratio W of each energy point in the DBS; 2) for the energy points with the helium bubbles, according to the life spectrum PALS of the corresponding energy points of the to-be-tested material, obtaining the life values of the helium bubbles in the to-be-tested material; 3) analyzing the depth distribution of each helium bubble in the to-be-tested material to obtain the average injection depth of each helium bubble; 4) calculating the type of helium bubbles in the material to be measured, and converting the radius of each helium bubble into a spherical radius to obtain the helium bubble size of the helium bubbles in the material to be measured, and 5) calculating the density of the helium bubbles to be solved at the corresponding injection depth through the two-state capture model according to the helium bubble size in the material to be measured, the matrix life of the material to be measured, the life value of the helium bubbles and the average life of the helium bubbles.

The invention relates to the technical field of application of helium optically pumped magnetometers for high-precision magnetic field measurement, in particular to a compensation method for light intensity matching of a radio frequency excitation light source of a helium optically pumped magnetometer. Applying high-voltage excitation to the helium lamp and the atomic gas chamber, adjusting the radio-frequency excitation frequency to enable the helium lamp and the atomic gas chamber to be in an impedance matching state, and recording a radio-frequency excitation frequency word at the moment; under the impedance matching frequency, adjusting the gain of the driving circuit, adjusting the light intensity of the helium lamp and the atomic gas chamber to a preset empirical value range, and recording a radio frequency excitation gain value at the moment; in a fixed magnetic field environment, the radio frequency excitation frequency and amplitude are adjusted through iteration, the magnetic field test noise level is monitored and reduced to the minimum, and the optimal radio frequency excitation parameter is recorded. According to the method, redundant and complex radio frequency excitation device parameter debugging work of each helium optically pumped magnetometer caused by the individual difference of the helium lamp and the atomic gas chamber can be avoided, and the adaptability of the helium optically pumped magnetometer to the individual difference of the helium lamp and the atomic gas chamber is improved.

This invention discloses a neutron measurement device using a helium-4 proportional counter tube, comprising: a helium-4 proportional counter tube, a proportional counter tube with helium-4 as the main gas and an internal gas pressure greater than or equal to 1 MPa, serving as a neutron detector and used to generate ionized particles; a neutron moderation collimator, enclosing the helium-4 proportional counter tube, used to scatter and moderate neutrons generated by its line-of-sight nuclear fusion device to achieve a collimation effect; an amplifier, used to amplify the output signal of the helium-4 proportional counter tube; a pulse height analyzer, used to receive the amplified output signal and output a pulse height spectrum; and a calculation module, used to receive the pulse height spectrum and fit the pulse height spectrum based on predetermined deuterium-deuterium neutron response energy spectra and deuterium-tritium neutron response energy spectra to obtain the ratio of the proportion of deuterium-deuterium neutrons to the proportion of deuterium-tritium neutrons in the output of the pulse height analyzer, and to calculate the ratio of deuterium-deuterium neutrons to deuterium-tritium neutrons. This invention does not rely on a photomultiplier tube, and the device is not easily affected by interference.

Provided in the present application are a helium-rich natural gas reservoir-forming efficiency evaluation method and system, an apparatus and a storage medium. The method comprises: acquiring geological data of a subsurface reservoir rock sample to be evaluated; on the basis of a dry weight nuclear magnetic resonance spectrum signal, a linear fitting slope of different volumes of a target fluid and nuclear magnetic signal quantities, and a nuclear magnetic resonance spectrum signal obtained after the target fluid has been vacuum-saturated, calculating the volume of the vacuum-saturated target fluid in said subsurface reservoir rock sample; on the basis of the volume of the vacuum-saturated target fluid in said subsurface reservoir rock sample, determining the gas drive efficiency and reservoir-forming pressure of said subsurface reservoir rock sample under different gas drive pressure; and, on the basis of the reservoir-forming pressure and the volume of the target fluid in said subsurface reservoir rock sample, evaluating the reservoir-forming efficiency of said subsurface reservoir rock sample. The present application simulates real geological historical conditions by means of analyzing change conditions under different pressure, thereby improving the accuracy of evaluation results of helium-rich natural gas reservoir-forming efficiency.

A compact and small size multichannel collimator for neutrons with energies up to 50 keV is provided. The collimator has a multichannel structure composed of collimating channels (in air, vacuum or in the non-interacting atmosphere of Helium-4) alternating with “full” channels made with absorbent materials for slow neutrons. The geometry of the individual collimating and absorbing channels can be arbitrary. The geometry with channels of square section, such as to create a perfect checkerboard, is preferred from the point of view of ease of construction.