8 results about "Ambient oxygen" patented technology

The invention discloses a sulfur hexafluoride gas cylinder inflation system, a sulfur hexafluoride gas cylinder transfer device and a sulfur hexafluoride gas cylinder transfer method.The sulfur hexafluoride gas cylinder inflation system comprises an inflation starting detection assembly, and the inflation starting detection assembly comprises an environment oxygen concentration detection part, an environment sulfur hexafluoride gas concentration detection part, an environment humidity detection part and an environment temperature detection part which are arranged on one side of a gas cylinder; the gas cylinder weight detection part is arranged at the bottom of the gas cylinder; the electromagnetic valve coil leakage current detection part is connected with the electromagnetic valve; the first gas density detection part is arranged at the outlet of the gas filling pipeline; according to the scheme, the electromagnetic valve is accurately controlled to be opened under the safety condition and the necessary inflation condition by monitoring multiple sets of environment data, gas cylinder data and data of the equipment to be inflated, the SF6 gas supplementing work quality is improved, and the safety of personnel and the equipment is guaranteed.

The present invention relates to a method for controlling exhaust gas recirculation of an engine, comprising: a detection step in which an oxygen concentration value is detected with a sensor; a comparison step in which the measured oxygen concentration value is compared with a first threshold value; a display step in which information indicating a comparison result of the comparison step is displayed on an operation interface, and under the condition that it is determined that the oxygen concentration value is lower than a first threshold value in the comparison step, the displayed information comprises a prompt about low environment oxygen concentration and a prompt that an operator needs to confirm or deny; a switching step of switching the engine from the normal operation mode to the exhaust gas recirculation correction mode when input information indicating that the operator has confirmed is received; and a correction step in which the flow rate of the exhaust gas recirculation gas is adjusted to ensure the flow rate of oxygen into the engine. The invention further relates to a control device for executing the method and a working machine comprising the control device.

The invention discloses a preparation process of an explosion-proof immersion liquid with high heat exchange rate, which belongs to the technical field of energy storage, and comprises the following steps: step 1, providing a basic liquid with the characteristics of high insulativity, high boiling point and low viscosity, step 2, uniformly dispersing at least one heat-conducting filler in the basic liquid to form a mixed liquid with high heat exchange rate, 3, at least one microencapsulated flame retardant is doped into the mixed solution, and a wall material of the microencapsulated flame retardant is configured to be broken and release internal flame-retardant substances when the temperature reaches a first preset temperature, 4, at least one oxygen-triggered curing component is doped into the mixed solution, and the oxygen-triggered curing component is prepared. The oxygen-triggered curing component is configured to be in contact with ambient oxygen. When local thermal runaway occurs, a fire extinguishing mechanism can be instantly started, and explosion suppression is effectively achieved. If leakage occurs in the system, the system can rapidly sense leakage and solidify and block the leakage point, self-healing is achieved, and the cooling function is prevented from losing efficacy.

This utility model discloses a reaction device for modifying amino active groups, relating to the field of amino active group modification reaction technology. It includes a reaction vessel, with an internal thread on the top of one side of the inner wall of the reaction vessel. A sealing top cover is detachably installed on the top of one side of the reaction vessel. A rotating handle is fixedly connected to the outer wall of the top of one side of the sealing top cover, and a sealing ring is fixedly connected to the bottom of one side of the sealing top cover. The internal thread and the external thread on the sealing ring cooperate to achieve a sealed connection between the sealing top cover and the top of the reaction vessel, effectively isolating ambient oxygen and preventing the reaction quality from being affected. Multiple rotating handles are provided on the surface of the sealing top cover for easy locking and installation, improving operational convenience. A stirring motor drives the stirring shaft to rotate, causing the stirring paddle on the rotating disk to stir the materials, ensuring uniform mixing and avoiding the problem of reduced reaction efficiency due to uneven mixing.

This invention discloses a variable multi-parameter chamber wire fire spread testing system. The system includes: a combustion chamber for providing a sealed testing space; an environmental parameter adjustment unit, including a temperature adjustment module, a pressure adjustment module, and an oxygen concentration adjustment module, for independently adjusting the ambient temperature, ambient pressure, and ambient oxygen concentration within the combustion chamber; an ignition unit, located within the combustion chamber, for igniting the wire under test; and a flow field velocity measurement unit for measuring the airflow velocity field and vortex structure during the wire fire spread process. This invention's variable multi-parameter chamber wire fire spread testing system can test the wire fire spread behavior under different environmental conditions such as temperature, pressure, and oxygen concentration, and record and analyze the wire characteristic parameters during the fire spread process under different environmental conditions to assess the fire hazard of wires under special environmental conditions.

This invention provides a method for measuring oxygen concentration in a barrier container. [Solution] The liquid-filled combination container 10L comprises a container 30 that contains liquid L in a containment section 31 and is oxygen-permeable, a barrier container 40 that contains the container and has oxygen barrier properties, at least one oxygen reagent 20 that can react with oxygen in the barrier container, and a fluorescent material 27 whose fluorescence time or fluorescence intensity differs depending on the ambient oxygen concentration. The oxygen reagent is fixed to at least one of the outer surface of the container and the inner surface of the barrier container. The fluorescent material is provided on the inner surface of the container at a fluorescent material installation position away from the containment section.

1. The name of the design product: oxygen-enriched air generating device. 2. The use of the design product: for injecting oxygen into air, increasing the oxygen concentration of the environment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a lithium battery thermal runaway oxygen source quantitative analysis method and system, and belongs to the technical field of lithium ion battery safety analysis. Based on the oxygen isotope labeling principle, the thermal runaway reaction of the lithium battery to be detected is triggered under the controllable atmosphere condition, isotope mass spectrometry is carried out on gas production components, and quantitative calculation of the contribution proportion of the thermal runaway reaction of the lithium battery to be detected including environment oxygen and positive electrode oxygen release is achieved. By adopting the embodiment of the invention, the participation degrees of the environmental oxygen and the lattice oxygen of the lithium battery positive electrode material to be detected in the thermal runaway combustion process are accurately distinguished, and the technical problem that the oxygen atom source of the combustion product is difficult to distinguish is solved.