9 results about "Gas holdup" patented technology

The present application relates to gas-liquid mixing reaction technical field, specifically to a kind of gas-liquid jet bubbling reactor, including reactor, distribution unit one, distribution unit two and adjusting unit.The size ratio between branch pipe one and reactor diameter is set in the present application, and the uniformity of gas bubble after pumping out is improved by increasing the number of branch pipe two and the uniform distribution of gas outlet hole, the gas holdup in unit area is improved, the problems of bubble coalescence effect and low shearing bubble efficiency are reduced, so as to improve the mass transfer efficiency between final gas and liquid;By setting the angle of gas outlet hole to 45 degrees, an inverted V-shaped pumping area is formed in the front-to-back direction, which improves the gas coverage range, i.e., the gas holdup in unit area, and the angle of gas outlet hole can be adjusted to adapt to different reaction volume requirements, and the gas outlet holes are distributed staggered, reducing the probability of coalescence reaction between bubbles generated by adjacent gas outlet holes, improving the uniformity of bubble distribution and the final mass transfer efficiency.

The present application belongs to a kind of gas rate measuring device and measuring method, for the gas-liquid two-phase flow cross section gas rate measuring method in existing round pipe, to the high requirement of round pipe material, for the gas-liquid disturbance intense flow type such as slug flow, stirring flow, the gas rate measuring precision of lower, it is difficult to realize the technical problem of industrial application, provide a kind of gas-liquid two-phase flow cross section gas rate measuring device and measuring method in round pipe, main pipeline is connected at the cross section to be measured of the measured round pipe at both ends, under the condition that not affecting the gas-liquid two-phase fluid working condition in round pipe, can carry out real-time measurement to the cross section gas rate of gas-liquid two-phase fluid at cross section to be measured.Main pipeline is provided with flow pattern adjustment device, different flow pattern gas-liquid two-phase fluid can be adjusted to the annular flow or gas column flow of gas-liquid two-phase uniform distribution, then through infrared measuring device, different flow pattern incoming gas-liquid two-phase flow cross section gas rate can be realized on-line measurement, suitable for the cross section gas rate measuring demand of different incoming flow pattern.

A device and method for detecting the gas content of a two-phase flow of oil and gas using a halogen lamp light source are disclosed. The method includes the following steps: Step 1: Turn on the halogen lamp light source and inject the prepared two-phase flow of oil and gas to be tested into the pipeline through a three-way valve according to the pre-calibrated gas content. Step 2: Turn on the peristaltic pump to uniformly fill the pipeline with the two-phase flow of oil and gas to be tested, then turn off the peristaltic pump. A first collimating lens is connected to the halogen lamp light source via a first optical fiber to receive the incident light emitted by the halogen lamp light source. A spectrometer is connected to the second collimating lens via a second optical fiber to receive the outgoing light of the two-phase flow of oil and gas passing through the flow cell. The spectrometer records the spectral information in a computer. Step 3: Repeat steps 1 and 2 until the spectral information of all calibrated gas contents is obtained. Step 4: Establish a prediction model using the spectral information. Specifically, a principal component regression (PCR) model for detecting the gas content of the two-phase flow of oil and gas is established to predict the gas content of the two-phase flow.

This invention discloses a drilling fluid degassing efficiency determination device and method based on a multi-stage degassing-index cumulative first-efficiency method, belonging to the field of oil and gas exploration. The device includes a circulation tank system, a stirring system, and a suction pump system. The circulation tank system includes at least two circulation tanks for alternately storing and transporting gas-bearing drilling fluid. The circulation tank system and the stirring system are intermittently connected via a first valve group and another intermittently connected via a second valve group. The exhaust port of the stirring tank is connected to a chromatograph via a gas pipeline. The suction pump system includes a suction pump, which is connected to the circulation tank via a fifth valve. The method uses experimentally measured multi-stage degassing gas component content data to perform exponential curve fitting to determine the total gas content of the drilling fluid. The degassing efficiency of the degasser on the drilling fluid is determined by the ratio of the gas components degassed in the first stage to the total gas content. This invention can accurately determine the drilling fluid degassing efficiency, providing a basis for accurately evaluating formation gas content.

The present application belongs to the technical field of gas invasion monitoring of deepwater oil and gas field drilling, and particularly relates to a deepwater drilling gas invasion monitoring method. The monitoring method extracts the nonlinear dynamic characteristics of ultrasonic signals through multi-scale fuzzy divergence entropy, and obtains the gas holdup value based on the support vector machine model trained by samples, thereby realizing quantitative monitoring and early warning of the small change of gas holdup. Compared with the existing deepwater drilling gas invasion monitoring method, the present method has significant advantages in monitoring accuracy, dynamic response characteristics and anti-noise interference performance, and can realize accurate identification and real-time quantitative monitoring of early weak gas invasion signal. A deepwater drilling gas invasion monitoring method comprises the following steps: collecting ultrasonic echo signals of gas-liquid two-phase flow; extracting multi-scale fuzzy divergence entropy values in the ultrasonic echo signals; inputting the feature vectors in the multi-scale fuzzy divergence entropy values into the trained support vector machine classification model to obtain the gas holdup recognition result.

A device and method for detecting the gas content of an oil-gas two-phase flow using an LED light source are disclosed. In the device, a first collimating lens is connected to an LED light source via a first optical fiber to receive incident light emitted by the LED light source. A second collimating lens is positioned opposite the first collimating lens at intervals. A flow cell is disposed between the first and second collimating lenses, and the oil-gas two-phase flow to be detected is contained in the flow cell. The oil-gas two-phase flow includes lubricating oil and air. The flow cell, a peristaltic pump, and a three-way valve are connected via pipelines to form a flow loop. The three-way valve controls the opening and closing of the flow loop to add or remove the oil-gas two-phase flow into the flow loop. A spectrometer is connected to a second collimating lens via a second optical fiber to receive the emitted light of the oil-gas two-phase flow passing through the flow cell and to collect absorbance information of the oil-gas two-phase flow at various wavelength points. The host is connected to the spectrometer and calculates and obtains the gas content of the oil-gas two-phase flow based on the absorbance information.

The application relates to an aluminum alloy vacuum and rotor high-efficiency composite degassing equipment and a degassing process thereof, and belongs to the field of aluminum alloy smelting and refining. The equipment comprises a crucible furnace, a sealing cover which is combined above the crucible furnace and surrounds the crucible furnace to form a closed degassing chamber, a gas suction port and a rotor mounting hole which are arranged on the sealing cover, a vacuum pump which is connected with the gas suction port through a vacuum pipeline, a rotating shaft which is mounted in the rotor mounting hole through a high-temperature sealing bearing, a driving motor which is connected with the rotating shaft at the upper end and connected with a rotating degassing rotor at the lower end, the rotating degassing rotor which is inserted into the aluminum liquid below the liquid surface of the crucible furnace, a heating system which is arranged on the furnace wall of the crucible furnace, and a control system which is electrically connected with the driving motor, the vacuum pump and the heating system respectively. The application solves the technical problems of long degassing process time and high gas content in the prior art, has the advantages of high degassing efficiency, low energy consumption and simple operation, and can be widely applied to aluminum alloy casting production.

The utility model discloses a kind of gas-liquid separation type crude oil exploitation medium flow metering devices, it is related to oil-gas-water three-phase fluid measurement technical field, including base, the top of base is provided with gas-liquid filter separator and mixed medium metering mechanism, the gas-liquid filter separator is located in one side of mixed medium metering mechanism, the mixed medium metering mechanism includes gas metering assembly and liquid metering assembly, the gas metering assembly is connected with the upper end of gas-liquid filter separator, and real-time metering separated gas medium, the liquid metering assembly is communicated with the bottom of gas-liquid filter separator, the utility model carries out real-time detection to the flow rate flow of complex working condition liquid in pipeline, the water content of oil and gas volume by multiple sensing technology, and detected data is handled in real time by PLC to be calculated in real time, to obtain the oil content, water content, gas content of oil well, to provide data support for the calculation of exploitation amount in exploitation early stage.

The application provides a control method and device for canceling active exhaust of a reactor coolant main pump and a computer readable storage medium, and comprises: performing vacuumizing operation on a primary loop system of a nuclear power plant; filling water to the primary loop system after the vacuumizing operation is completed and developing static exhaust; monitoring the final gas content of the primary loop system, and if the final gas content meets a preset condition, controlling the low-pressure safety injection to operate in an SI mode; and after the low-pressure safety injection operates in the SI mode, directly starting the main pump to replace the execution of the active exhaust operation. The operation method, device and computer readable storage medium for canceling the active exhaust of the reactor coolant main pump can improve the technical problem of additional time limit.