5 results about "Jet injection" patented technology

This invention provides a high-pressure jet injection lawn loosening machine, including a frame, wheel assembly, working unit, and control unit. The working unit includes an injection assembly, a water circuit assembly, and an air circuit drive assembly. The injection assembly includes an injection cylinder, a movable circular pressure plate sleeved on the lower end of the injection cylinder, and an injection tube fixed to the lower end of the injection cylinder and passing through the movable circular pressure plate. An elastic element is provided between the movable circular pressure plate and the cylinder seat of the injection cylinder. The water circuit assembly includes a water tank, a high-pressure pump, a high-pressure storage tank, and a switch valve. The outlet of the water tank is connected to the inlet of the high-pressure pump, and the outlet of the high-pressure pump is connected to the inlet of the high-pressure storage tank. The outlet of the high-pressure storage tank is connected to the injection tube via the switch valve. The air circuit drive assembly includes an air compressor, which is connected to the injection cylinder and used to drive the injection cylinder to move the injection tube in a reciprocating injection motion. This invention allows the site to be used immediately after operation without a recovery period and can be operated by a single person.

The present application relates to a kind of oxygen-removing device low-temperature reheat steam source pressure regulating system, including entity equipment and control hub in the technical field of thermal power plant cogeneration and boiler bypass heat supply stable pressure regulation and control, entity equipment includes feedforward perception matrix, acoustic muffling flash device, residual waveform sensing node, pneumatic damping valve array and porous jet pipe network.System acquires parameters through feedforward perception matrix, utilizes evolution prediction module to output the space coordinates and pressure wave frequency band of unvaporized water droplet induced flash expansion.Stable pressure intervention module adjusts the physical volume of acoustic muffling flash device according to prediction result and activates microwave phase change excitation field, eliminates pressure pulsation and promotes water droplet instantaneous phase change.At the same time, calculate the antiphase compensation waveform to drive pneumatic damping valve array to implement fluid interference cancellation, smooth steam passes through porous jet pipe network self-excitation oscillation jet injection, eliminate vacuum negative pressure area, prevent oxygen-removing device internal transient water hammer.

This invention discloses a two-stage alternative fuel pre-combustion furnace system, relating to the field of pre-combustion furnace technology. It includes a first pre-combustion furnace body and a second pre-combustion furnace body stacked vertically, a connecting device, and a jet injection system. The top of the first pre-combustion furnace body has a first top cavity, which has a first alternative fuel inlet and a first conventional fuel inlet. The top of the second pre-combustion furnace body has a second top cavity, which has a second alternative fuel inlet and a second conventional fuel inlet. The bottom of the first pre-combustion furnace body is connected to the inlet of a decomposition furnace. The connecting device connects the first and second pre-combustion furnace bodies. The inner walls of the first, second, and connecting devices are all provided with stepped hearths. The jet injection system is located below the stepped hearths.

This invention provides a method for adjusting turbine flow capacity based on casing jet injection, belonging to the field of turbine technology. A jet injection channel is provided in the casing, located near the throat. Airflow from the high-pressure compressor passes through the jet injection channel and enters the guide vane passage. When no jet injection is applied, the fluid near the endwall migrates towards the suction side due to the lateral pressure gradient, forming a channel vortex. By injecting jet injection into the casing, a flow separation zone is generated on the inner surface of the casing. Simultaneously, the aforementioned migrating flow is enhanced, and a portion of the mainstream flow downstream of the jet injection point is entrained by the high-momentum jet flow. The two flows mix, causing premature and extensive separation in the guide vane corner region. The low-energy fluid regions generated by these two separations affect the effective flow area of ​​the mainstream flow, altering the guide vane's flow capacity. This invention avoids the difficulties of applying existing geometric adjustments to high-pressure turbines and the increased complexity of the internal cooling structure of the blades caused by aerodynamic adjustments.