11results about How to "Guaranteed normal injection" patented technology

The invention discloses a two-section type rock core pressure flooding experiment device and method based on CT scanning. The device comprises a liquid supply system, a temperature control system, a two-section pressure control type core holder, a pressure loading system, a CT scanner and a metering device, the liquid supply system comprises a constant-speed constant-pressure pump and three intermediate containers, and the constant-speed constant-pressure pump is connected with the injection end of the two-section pressure control type core holder after being connected with the intermediate containers through a four-way valve; a core sample is arranged in the two-section pressure control type core holder, a front-end confining pressure injection hole and a rear-end confining pressure injection hole are formed in the side wall of the two-section pressure control type core holder, correspondingly connected with a confining pressure servo pump and a manual high-pressure pump and used for applying different confining pressures to the front section and the rear section of the core sample, and the outflow end of the two-section pressure control type core holder is connected with a metering device through a discharging pipeline. And a back-pressure valve and an outlet control valve which are communicated with the manual high-pressure pump connecting pipeline are arranged. The method truly restores the oil field on-site pressure driving construction crack forming process, and provides a basis for research on the change of cracks in a reservoir before and after pressure driving.

The utility model discloses a cooling type plasma cleaning machine nozzle which comprises a base, a nozzle body and a nozzle body. The cover body is arranged above the base; the electrode plate is arranged in the mounting cavity, and a cooling medium circulating cavity is formed in the electrode plate; the first electrode connecting pipe penetrates through the cover body and penetrates into the electrode plate, and the first electrode connecting pipe is communicated with the cooling medium circulating cavity; and the second electrode connecting pipe penetrates through the cover body and penetrates into the electrode plate, and the second electrode connecting pipe is communicated with the cooling medium circulating cavity. According to the utility model, the cooling medium circulating cavity is arranged in the electrode plate, so that the cooling effect on the electrode plate is realized, the membrane deformation caused by over-high temperature when the membrane is cleaned by the spray head is prevented, and the use effect of the electrode plate is ensured; and gas circulates in the mounting cavity, so that the spraying and cleaning effects of the spray head of the plasma cleaning machine are ensured, and the cooling effect on the interior of the spray head is further improved.

The utility model relates to the technical field of light guide devices, and particularly discloses a special-shaped light guide piece, a charging assembly and an artificial limb, the special-shaped light guide piece comprises a first light guide part, a second light guide part and a third light guide part, the end face of one end of the first light guide part is a first light inlet and outlet face; one end of the second light guide part is connected with the other end of the first light guide part, and the end surface of the other end of the second light guide part is a second light inlet and outlet surface; wherein the normal lines of the first light inlet and outlet surface and the second light inlet and outlet surface do not coincide, and the circumferential outer side surfaces of the first light guide part and the second light guide part are coated with silver coatings. According to the special-shaped light guide piece, the charging assembly and the artificial limb, the problem that when the normal lines of the light inlet face and the light outlet face do not coincide, the brightness of the light outlet face is low can be effectively solved.

The invention belongs to the technical field of seedling cultivation, and particularly relates to an intelligent irrigation device for forest seedling cultivation, which comprises a cultivation box, a self-checking and upward-moving assembly is arranged in the cultivation box, and the self-checking and upward-moving assembly comprises a cultivation bin arranged in the cultivation box; along with evaporation of water in the culture bin, the culture bin can move upwards under the action of a balancing weight and saline water, water flow directly irrigates rootstocks of saplings through a connecting pipe, a control pipe, a slow flow pipe, an embedded pipe and a plurality of water seepage openings in the surface of the embedded pipe, the normal water requirement for growth of the saplings is guaranteed, quantitative water injection irrigation can be achieved, and the water quality of the saplings is improved. The phenomenon that the seedlings are dry, poor in development and even withered due to the fact that the seedlings cannot be irrigated in time is avoided, the tooth-shaped soil loosening cone loosens the surface layer of the culture soil, the phenomenon that the soil texture of the surface layer of the culture soil becomes hard after water of the surface layer of the culture soil is lost is avoided, and normal growth of the seedlings is guaranteed.

An interlayer pressure difference state water injection process pipe column comprises an oil pipe, a hydraulic self-locking oil drainage anchoring device is installed on the oil pipe, and a plurality of step-by-step layered plugging tools and bridge type concentric profile control tools are installed on the oil pipe and located below the hydraulic self-locking oil drainage anchoring device. The number of the step-by-step layered plugging tools and the number of the bridge type concentric profile control tools are equal, the step-by-step layered plugging tools and the bridge type concentric profile control tools are alternately arranged up and down, a sliding plugging anti-overflow check valve is installed at the lower end of an oil pipe, after water injection is stopped, the hydraulic self-locking oil drainage anchoring device is still kept in an anchoring state, a water injection process pipe column is prevented from moving up and down, and it is guaranteed that the bridge type concentric profile control tools inject water into corresponding stratums; and the step-by-step layering plugging tool still keeps a plugging state, mutual circulation of water between stratums is prevented, and it is guaranteed that the pressure between the stratums is balanced.

The present invention provides a sound feedback system for an automatic injection device, the automatic injection device comprises a needle protection sleeve, a trigger sleeve, a return spring, a start sound component, and an end cover, an outer trigger structure is provided on the outer wall of the trigger sleeve, the outer trigger structure is provided with an outer trigger slope, and the inner surface of the start sound component is provided with a first trigger slope. When in use, the needle protection sleeve is pressed down to push the trigger sleeve, the outer trigger slope interacts with the first trigger slope, drives the trigger start sound component to rotate, and finally collides with the end cover to emit a sound signal of "start injection", the triggering of "injection" and the triggering of "sound of start injection" are completed by the same part, thereby ensuring that the sound feedback of start injection is synchronized with the actual start of injection action; the start sound component and the end sound component emit sound by colliding with the same end cover, that is, the two sound signals are homologous, and the feedback of start injection and end injection is clear to the patient.

The utility model discloses an exhaust aftertreatment system cooling liquid pipeline assembly which comprises a warm air water inlet steel pipe and a water inlet main pipeline, one end of the water inlet main pipeline is communicated with one end of the warm air water inlet steel pipe, and the other end of the water inlet main pipeline is communicated with a first port of a water inlet tee joint. A second port of the water inlet tee joint is communicated with one end of a urea nozzle cooling water inlet pipe, the other end of the urea nozzle cooling water inlet pipe is communicated with a urea nozzle of the exhaust postprocessor, and the urea nozzle is communicated with one end of a urea nozzle cooling water return pipe at the same time. According to the exhaust aftertreatment system cooling liquid pipeline assembly, the urea box heating water pipe and the urea nozzle cooling water pipe are integrated, the arrangement space of a whole vehicle is saved, and modularization of the whole vehicle is facilitated. Offline split charging of a urea box heating water pipe and a urea box can be achieved, off-line split charging of a urea nozzle cooling water pipe and a postprocessor is achieved, the production takt of a final assembly line is saved, and the assembly efficiency is improved.

The present invention belongs to the technical field of burners, and in particular relates to a burner for mixed combustion of natural gas and hydrogen, comprising a fan, a shell, a fuel nozzle and an igniter, wherein the fuel nozzle is penetrated into the shell, and when the switch is closed, the direction of rotation is controlled to drive the pawl to drive the ratchet to rotate synchronously, so that the ratchet can be controlled to drive the internal rotating disk, and if the switch is turned on and then reversed, the pawl can be controlled to abut against the ratchet without driving the ratchet to rotate, and when the blades are opened, the ratchet will be driven by the thrust of the spring to reset and rotate together with the ratchet, the pawl and the rotating rod, and after the driving spring elastic force disappears, the rotating rod continues to rotate and will not drive the ratchet to rotate, and keeps rotating separately, and if the blades need to adjust the angle separately, switch two controls the motor one to rotate in the same direction as when it is turned on, and the blades can rotate 360 ​​degrees to ensure that the rotating rod only rotates in one direction when switch two is turned on, and the adjustment effect can still be achieved.

The invention belongs to the technical field of combustors, and particularly relates to a combustor for mixed combustion of natural gas and hydrogen, the combustor comprises a fan, a shell, a fuel spray pipe and an igniter, the fuel spray pipe penetrates into the shell, and when a first switch is turned off, the rotation direction is controlled to drive a pawl to drive a ratchet wheel to rotate synchronously; when the blade is opened, the ratchet wheel drives the ratchet wheel, the ratchet wheel, the ratchet wheel and the rotating rod to reset and rotate together due to the thrust of the clockwork spring, and after the elastic force of the clockwork spring disappears, the ratchet wheel is driven to drive the ratchet wheel to rotate. If the angle of the blade needs to be adjusted independently, the second switch controls the first motor to rotate in the reverse direction the same as the reverse direction when the first motor is started, the blade can rotate by 360 degrees, it is guaranteed that the rotating rod only rotates in one direction when the second switch is started, and the adjusting effect can still be achieved.

This utility model provides a rapid concrete repair device, relating to the technical field of bridge maintenance equipment. It includes: a frame with a machine stand mounted on it; a material storage box mounted on the machine stand; a pump body mounted on the machine stand, located in front of the material storage box; a motor mounted on the machine stand, located below the material storage box; and a rotating disc below the motor. Through the cooperation of a splined shaft and a first splined sleeve, the rotating disc drives a brush to rotate, thereby cleaning the concrete surface. Utilizing the elasticity of a compression spring, the brush can fully contact the concrete surface, effectively cleaning large particles of sand and soil within cracks. This prevents residual impurities from affecting the adhesion of subsequent repair materials, ensuring repair quality. This invention solves the problem in existing bridge concrete surface damage repair equipment where incomplete cleaning of large particles of sand and soil within concrete cracks leads to residual impurities affecting the adhesion of subsequent repair materials and reducing repair quality.

The application discloses an ultrasonic vibration and laser-assisted combined ceramic matrix composite material drilling device and belongs to the field of composite material processing.The device comprises a laser, a main shaft laser channel, a compressed air channel, an optical path adjusting device, an ultrasonic vibration device, a fixing device, a drill bit and the like, wherein the laser is used for emitting laser light, the laser light is incident to the optical path adjusting device through the main shaft laser channel, the optical path adjusting device and the fixing device ensure that two beams of laser light emitted after light splitting are always irradiated by a drill bit through hole on the drill bit, and the function of heating and softening workpiece material is realized; the ultrasonic vibration device makes the end of the drill bit output the main shaft rotation movement and simultaneously output a longitudinal-torsional composite ultrasonic vibration with a certain amplitude, realizes an intermittent contact cutting drilling mode, and reduces cutting force and torque; compressed air blows away cutting chips through the compressed air channel and the drill bit through hole on the drill bit; longitudinal-torsional composite ultrasonic vibration, laser-assisted processing and drilling are organically combined, the damage of the air outlet and inlet is reduced, and the processing quality is improved.