33412 results about "Nozzle" patented technology

The invention is suitable for the technical field of performance detection, and provides a method for detecting the ablation resistance of a burning-resistant nozzle and an arc contact, and the method comprises the steps: collecting a temperature field matrix, an arc image sequence, an electrical parameter time sequence and a surface displacement curve of an ablation region, and generating a multi-modal data set; based on the data set, extracting spatial features of the ablation core region through a cavity convolution layer and a channel attention mechanism; inputting a preset bidirectional LSTM network, fusing thermal stress data of the COMSOL simulation model to drive gating weight update, and extracting time sequence evolution characteristics; generating a space-time fusion feature vector containing the temperature field gradient, the arc form change rate and the surface roughness evolution feature; inputting the space-time fusion feature vector, the thermal stress distribution data and the material phase change threshold parameter into a constructed ablation prediction model for training; the ablation prediction model after training is completed is optimized; and a performance prediction result is generated in real time by using the optimized ablation prediction model, so that the detection accuracy is effectively improved.

An aircraft gas turbine engine includes a combustor, with a combustion chamber and fuel spray nozzles to inject fuel into the chamber. The nozzles include first and second subsets. The first subset of nozzles is supplied with fuel at a greater rate than each of the second subset. A ratio of nozzles in the first subset to the second subset is 1:3 to 1:6. A lean cruise nvPM emissions index ratio isEIcruise⁡(lean),SAFEIcruise⁡(lean),FF,where EIcruise(lean),SAF isEImaxTO,SAF+EIclimb,SAF2and EIcruise(lean),FF isEImaxTO,FF+EIclimb,FF2.EImaxTO,SAF is nvPM emissions index operating at 100% available thrust and EIclimb,SAF is the nvPM emissions index operating at 85% available thrust if fuel includes sustainable aviation fuel. EImaxTO,FF is the nvPM emissions index operating at 100% available thrust and EIclimb,FF is the nvPM emissions index at 85% available thrust if fuel is a fossil-based hydrocarbon. The lean cruise nvPM emissions index ratio is less than 1.

A gas turbine engine for an aircraft is disclosed. The gas turbine engine comprises: a combustor, comprising a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the combustion chamber, wherein the plurality of fuel spray nozzles comprises a first subset of fuel spray nozzles and a second subset of fuel spray nozzles, wherein the combustor is operable in a condition in which each of the fuel spray nozzles of the first subset of fuel spray nozzles is supplied with fuel at a greater fuel flow rate than each of the fuel spray nozzles of the second subset of fuel spray nozzles, wherein a ratio of the number of fuel spray nozzles in the first subset of fuel spray nozzles to the number of fuel spray nozzles in the second subset of fuel spray nozzles is in the range of 1:2 to 1:5. A thrust nvPM emissions index ratio is defined as:EImaxTO / FmaxTOEIidle / Fidlewhere: EIidle is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine if operating at around 7% available thrust for given operating conditions; EImaxTO is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine if operating at around 100% available thrust for the given operating conditions; FmaxTO is the thrust of the gas turbine engine at around 100% available thrust in kN for the given operating conditions; and Fidle is the thrust of the gas turbine engine at around 7% available thrust in kN for the given operating conditions. The thrust nvPM emissions index ratio is greater than 0.001. The gas turbine engine is configured to provide fuel comprising a sustainable aviation fuel (SAF) to the plurality of fuel spray nozzles. Also disclosed is a method of operating the gas turbine engine.

The invention relates to the technical field of smashing, and discloses a cerium oxide airflow smashing device and a production technology.The cerium oxide airflow smashing device comprises a base, four supporting legs arranged at equal angles are arranged on the base, a first tank is connected to the supporting legs, and an air injection mechanism used for spraying high-pressure airflow and driving materials to collide with one another to be smashed is installed in the first tank; a feeding pipeline positioned above the air injection mechanism is mounted on the first tank body; the inner wall of the first tank body is provided with four cooling assemblies which are arranged at equal angles, the upper port of the first tank body is connected with a second tank body through a flange, the second tank body is provided with a grading mechanism and a discharging pipeline corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover; according to the device, efficient production is achieved through multi-dimensional innovation, a double-layer S-shaped cooling flow channel dissipates heat quickly, and high-temperature agglomeration of materials is avoided so as to guarantee stable physicochemical properties; and the four groups of opposed nozzles form a vortex field, so that the particle size refining rate of the material is more than 90%, and the energy consumption is reduced by 35%.

A gas turbine engine for an aircraft is disclosed. The gas turbine engine comprises: a combustor, comprising a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the combustion chamber, wherein the plurality of fuel spray nozzles comprises a first subset of fuel spray nozzles and a second subset of fuel spray nozzles, wherein the combustor is operable in a condition in which each of the fuel spray nozzles of the first subset of fuel spray nozzles is supplied with fuel at a greater fuel flow rate than each of the fuel spray nozzles of the second subset of fuel spray nozzles, wherein a ratio of the number of fuel spray nozzles in the first subset of fuel spray nozzles to the number of fuel spray nozzles in the second subset of fuel spray nozzles is in the range of 1:3 to 1:6. A MTO nvPM emissions index ratio is defined as:EImaxTO,SAFEImaxTO,FFwhere: EImaxTO,SAF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for given operating conditions if a fuel provided to the plurality of fuel spray nozzles comprises a sustainable aviation fuel (SAF); and EImaxTO,FF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for the given operating conditions if a fuel provided to the plurality of fuel spray nozzles is a fossil-based hydrocarbon fuel. The MTO nvPM emissions index ratio of the gas turbine engine is less than 1. The gas turbine engine is configured to provide fuel comprising a SAF to the plurality of fuel spray nozzles. Also disclosed are methods of operating the gas turbine engine.

Disclosed are a press-type cup lid and a nozzle cup. The press-type cup lid includes a lid body, a press button movably mounted on the lid body, a suction nozzle fixed to the press button, and a suction pipe fixed to the lid body. The press button includes a first position and a second position. When the press button is in the first position, a channel of the suction nozzle communicates with a channel of the suction pipe. When the press button is in the second position, the channel of the suction nozzle is disconnected from the channel of the suction pipe.

A gas turbine engine for an aircraft. The gas turbine engine comprising: a combustor, comprising a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the combustion chamber, wherein the plurality of fuel spray nozzles comprises a first subset of fuel spray nozzles and a second subset of fuel spray nozzles, wherein the combustor is operable in a condition in which each of the fuel spray nozzles of the first subset of fuel spray nozzles is supplied with fuel at a greater fuel flow rate than each of the fuel spray nozzles of the second subset of fuel spray nozzles, wherein a ratio of the number of fuel spray nozzles in the first subset of fuel spray nozzles to the number of fuel spray nozzles in the second subset of fuel spray nozzles is in the range of 1:2 to 1:5. An MTO nvPM emissions index ratio-modified fuel flow is defined as:EImaxTO,SAFEImaxTO,FF×Wf,maxTOwhere: EImaxTO,SAF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for given operating conditions if a fuel provided to the plurality of fuel spray nozzles comprises a sustainable aviation fuel (SAF); EImaxTO,FF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for the given operating conditions if a fuel provided to the plurality of fuel spray nozzles is a fossil-based hydrocarbon fuel; and Wf,maxTO is the mass flow rate of fuel provided to the plurality of fuel spray nozzles in kg / s when the gas turbine engine is operating at around 100% available thrust for the given operating conditions. The MTO nvPM emissions index ratio-modified fuel flow of the gas turbine engine in kg / s is less than 2. The gas turbine engine is configured to provide fuel comprising a SAF to the plurality of fuel spray nozzles. Also disclosed is a method of operating the gas turbine engine.

A gas turbine engine includes a combustor with a combustion chamber and fuel spray nozzles to inject fuel into the combustion chamber. The nozzles include a first and second subset. Each of the nozzles of the first subset is supplied with fuel at a greater rate than each of the second subset. A ratio of nozzles in the first subset to nozzles in the second subset from 1:3 to 1:6. A fuel-flow nvPM emissions index ratio isEIidle×Wf,idleRImaxTO×Wf,maxTO.EIidle and EImaxTO are the system loss corrected nvPM emissions index in mg / kg operating at around 7% and 100% available thrust for the given operating conditions, respectively. Wf,idle and Wf,maxTO are the rate of fuel flow to the fuel spray nozzles in kg / s at around 7% and 100% available thrust for the given operating conditions, respectively. The fuel-flow nvPM emissions index ratio of the gas turbine engine is less than 0.3.

A gas turbine engine includes: a rich burn, quick quench, lean burn combustor having a number of fuel spray nozzles in the range 14-22 or a number of fuel spray nozzles per unit engine core size in the range 2 to 6. An nvPM emissions index ratio is defined as:EIidle×Wf,idleEImaxTO×Wf,maxTOwhere: EIidle and EImaxTO are respectively the nvPM emissions index in mg / kg of gas turbine engine if operating at around 7% or 100% available thrust for given operating conditions; Wf,idle and Wf,maxTO are respectively the rate of fuel flow to fuel spray nozzles in kg / s at around 7% or 100% available thrust for given operating conditions. The fuel-flow nvPM emissions index ratio is less than 0.08. The gas turbine engine is configured to provide fuel including sustainable aviation fuel to fuel spray nozzles. Also disclosed is a method of operating the gas turbine engine.

A gas turbine engine for an aircraft. The gas turbine engine comprising: a rich burn, quick quench, lean burn (RQL) combustor having a number of fuel spray nozzles in the range of 14-22 or a number of fuel spray nozzles per unit engine core size in the range 2 to 6. An MTO nvPM emissions index ratio is defined as:EImaxTO,SAFEImaxTO,FFwhere: EImaxTO,SAF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for given operating conditions if a fuel provided to the fuel spray nozzles comprises a sustainable aviation fuel (SAF); and EImaxTO,FF is the system loss corrected nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for the given operating conditions if a fuel provided to the fuel spray nozzles is a fossil-based hydrocarbon fuel. The MTO nvPM emissions index ratio of the gas turbine engine is less than 1. The gas turbine engine is configured to provide fuel comprising a SAF to the fuel spray nozzles. Also disclosed is a method of operating a gas turbine engine.

A gas turbine engine for an aircraft is disclosed. The gas turbine engine comprises: a combustor, comprising a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the combustion chamber, wherein the plurality of fuel spray nozzles comprises a first subset of fuel spray nozzles and a second subset of fuel spray nozzles, wherein the combustor is operable in a condition in which each of the fuel spray nozzles of the first subset of fuel spray nozzles is supplied with fuel at a greater fuel flow rate than each of the fuel spray nozzles of the second subset of fuel spray nozzles, wherein a ratio of the number of fuel spray nozzles in the first subset of fuel spray nozzles to the number of fuel spray nozzles in the second subset of fuel spray nozzles is in the range of 1:3 to 1:6. A MTO nvPM emissions index ratio is defined as:EImaxTO,SAFEImaxTO,FFwhere: EImaxTO,SAF is the nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for given operating conditions if a fuel provided to the plurality of fuel spray nozzles comprises a sustainable aviation fuel (SAF); and EImaxTO,FF is the nvPM emissions index in mg / kg of the gas turbine engine when operating at around 100% available thrust for the given operating conditions if a fuel provided to the plurality of fuel spray nozzles is a fossil-based hydrocarbon fuel. The MTO nvPM emissions index ratio of the gas turbine engine is less than 1. The gas turbine engine is configured to provide fuel comprising a SAF to the plurality of fuel spray nozzles. Also disclosed are methods of operating the gas turbine engine.

A gas turbine engine includes: a rich burn, quick quench, lean burn combustor having a number of fuel spray nozzles in range of 14-22 or a number of fuel spray nozzles per unit engine core size in range 2 to 6. An MTO nvPM emissions index ratio is:EImaxTO,SAFEImaxTO,FF×Wf,maxTOwhere: EImaxTO,SAF and EImaxTO,FF are respectively the nvPM emissions index in mg / kg when operating around 100% available thrust for given operating conditions if fuel provided to fuel spray nozzles includes either sustainable aviation fuel (SAF) or fossil-based hydrocarbon fuel; Wf,maxTO is mass flow rate of fuel provided to fuel spray nozzles in kg / s when gas turbine engine is operating at around 100% available thrust for given operating conditions. MTO nvPM emissions index is less than 2. The gas turbine engine is configured to provide fuel including SAF to fuel spray nozzles. Also disclosed is method of operating gas turbine engine.

A screen making machine includes a table, welder assembly, and actuation assembly. The welder assembly includes: a hot air nozzle, a pump, and a roller. The actuation system moves the welder assembly along the frame. Hot air from the nozzle elevates the temperature of the mesh and adjacent frame to an elevated temperature above a melt temperature of the surfaces of the mesh and frame. The roller presses the melted mesh surface against the melted frame surface, to melt fuse them together.

The invention provides an SMT patch correction system linked with AOI and a method thereof. The SMT patch correction system comprises a stokehole AOI detection module, a stokehole AOI detection module, a multi-dimensional sensing module, an intelligent data center module, an AI decision optimization module and a process simulation verification module. According to the method, the AOI detection data in front of and behind the furnace are fused through the intelligent data center module, the mapping relation of knowledge graph associated elements, the technology and offset data is constructed, a linkage closed loop is formed, and offset source tracing and full-process dynamic deviation correction are achieved; environmental parameters such as temperature, vibration and suction nozzle pressure are collected in real time through the multi-dimensional sensing module, and the environmental parameters are standardized through an intelligent data platform and then are included into correction logic of the AI decision optimization module, so that dynamic compensation of the influence of environmental factors on the mounting precision is realized; a deep learning and reinforcement learning cooperation strategy is adopted through the AI decision optimization module, parameters are dynamically optimized and corrected in combination with thermal deformation simulation and other multi-source information of the process simulation verification module, and the adaptability to different element types and production scenes is improved.

The invention relates to the technical field of aero-engines, in particular to a sealing and cooling structure and method for adjusting the axial force of an aero-engine rotor, which comprises a turbine disc provided with a rear baffle, and further comprises a low-pressure turbine guide vane arranged opposite to the turbine disc, a low guide front inner supporting ring and a low guide rear inner supporting ring are arranged in the middle of the low-pressure turbine guide vane; labyrinth teeth correspondingly matched with the low-guide front inner supporting plate are formed on the rear baffle, radial labyrinth tooth gaps are formed, and when airflow in an air collection cavity enters a rotor cavity from a low-pressure pre-rotation nozzle, the airflow is embedded into an air supply channel from a front pre-rotation hole at the same time; one part of airflow entering the air supply channel enters the disc rear cavity, and the other part of airflow enters the rotor cavity. By adjusting the sealing labyrinth structure, it is ensured that the axial force of the rotor does not exceed the allowable maximum value in the large-state working process and is not subjected to light load in the small-state working process, meanwhile, sealing gas used behind a turbine disc is ensured, turbine hot gas is prevented from flowing into an inner disc cavity from a main channel, and it is ensured that an engine works reliably.

A temperature-rainfall-reservoir water combined testing system for a permafrost landslide model includes a tempered glass case with a permafrost landslide model and reservoir water provided therein; a temperature control system provided on the tempered glass case and including an incubator temperature control module, a landslide mass rear edge water tank temperature control module and an air circulation temperature control module; a seepage control system configured to realize seepage of the permafrost landslide model, and form the reservoir water in front of a landslide mass; a rainfall control system including a water tube, a flow controller and a nozzle, where the nozzle is provided in the tempered glass case, and located above the permafrost landslide model; and a multi-field monitoring system including a temperature sensor, a pore water pressure gauge, a moisture meter and a grating strain gauge that are provided in the permafrost landslide model.

The invention relates to the technical field of surface defect detection, and discloses surface defect detection equipment for tread production, which comprises a detection table, a detection camera is arranged on the detection table, a cleaning box is fixed on the detection table, a rotatable cleaning seat is arranged on the cleaning box, a strip-shaped frame is fixed on the cleaning seat, and the strip-shaped frame is fixed on the detection table. A rotatable blowing nozzle is arranged on the strip-shaped frame, a wiping piece is arranged on the cleaning seat, and a plurality of flushing nozzles distributed at equal intervals and a rotatable extrusion plate are arranged on the cleaning seat; a wave abutting ring is arranged in the cleaning box, a first abutting rod is fixed to the wave abutting ring, and a first abutting frame is arranged in the cleaning box. And the cleaning seat continuously rotates, so that the wiping sheet automatically wipes and cleans the surface of the lens in all directions, the lens dust cleaning effect and the product surface defect detection precision of the detection camera can be greatly improved, and the cleaning process is time-saving, labor-saving, convenient and fast.

Ejection seat systems include an ejection seat and a propellant assembly mounted to the ejection seat. A nozzle assembly having an adjustable nozzle is moveably attached to the ejection seat and configured to receive propellant exhaust from the propellant assembly and exhaust through the adjustable nozzle. A first linear electric actuator is operably connected to the adjustable nozzle and arranged to adjust an orientation of the adjustable nozzle in a first direction and a second linear electric actuator is operably connected to the adjustable nozzle and arranged to adjust an orientation of the adjustable nozzle in a second direction. The second direction includes a directional component that is normal to the first direction. A control module is configured to control operation of the first linear electric actuator and the second linear electric actuator.

The invention provides an intelligent rapid tunneling system and a control method thereof, and relates to the technical field of tunneling device.The tunneling system comprises a tunneling anchor machine, a spraying system is arranged on the front side of the tunneling anchor machine, the spraying system comprises a first mechanical arm, a first nozzle is arranged at the tail end of the first mechanical arm, and the first mechanical arm is used for moving according to a first preset path; the coating is sprayed to the surfaces of the top plate and the side of the roadway, and the cured coating forms a supporting layer; the self-moving machine tail is arranged behind the miner-bolter; and the second mechanical arm is arranged on the rear side of the self-moving tail, a second nozzle is arranged at the tail end of the second mechanical arm, and the second mechanical arm is used for moving according to a second preset path and conducting supplementary spraying on the area which is not sprayed by the first mechanical arm. According to the tunneling system, automatic spraying and supporting of roadway surrounding rock can be achieved, the traditional procedure of manually laying an anchor net is effectively replaced, the construction efficiency is improved, the labor intensity of workers is relieved, the number of the workers is reduced, and the intelligent level of roadway supporting is improved.

The utility model discloses the field of agricultural machinery, and particularly relates to a spraying machine tool and an all-terrain spraying vehicle, the spraying machine tool comprises a hollow shell, a visual identification device and a spraying device are arranged on the two sides of the shell in the width direction respectively, the visual identification device comprises a supporting rod, the supporting rod extends in the height direction of the shell, and the spraying device is arranged on the supporting rod. A camera is arranged at one end of the supporting rod, the other opposite end of the supporting rod is connected with the shell, the spraying device comprises a water pipe, the water pipe extends in the height direction of the shell, a signal control switch valve is arranged on the water pipe, a spraying pipe is connected to the top of the water pipe, and a plurality of nozzles are arranged on the spraying pipe at intervals. According to the utility model, the visual identification device and the spraying device are arranged, and the visual identification device is used for judging whether spraying is carried out or not, so that the pertinence is stronger during spraying, the investment of labor cost can be reduced, the physical and psychological health of staff is greatly maintained, and the spraying device is simple in structure and convenient to popularize.

The invention discloses a flow-guiding-free laminar flow water column nozzle, a nondestructive testing system and application of the flow-guiding-free laminar flow water column nozzle, and belongs to the field of industrial manufacturing. The flow-guiding-free laminar flow water column nozzle comprises a nozzle body, a nozzle head is detachably installed at the front end of the nozzle body through a connecting flange, and a filter element capable of greatly increasing the length of a laminar flow water column is arranged in the nozzle body through a clamping base; at least two through holes communicated with an internal channel of the nozzle body are formed in the nozzle body, a first flow channel, a second flow channel, a third flow channel and a fourth flow channel are sequentially formed in the nozzle body and the internal flow channel of the nozzle head in the water flow spraying direction, the filter element comprises a middle section, and a net face section is arranged at the end, away from the nozzle head, of the middle section. The end, close to the nozzle head, of the middle section is provided with a sunken section. According to the flow-guide-free laminar flow column nozzle, the nondestructive testing system and the application thereof, the filter element matched flow channel streamline combination capable of greatly improving the length of a laminar flow column can be achieved, the filter element can be manufactured through 3D printing, and the fund cost and the time cost are reduced.

A horizontal nozzle welding machine reasonable in structure comprises a rack, a bag taking mechanism, a bag body horizontal conveying mechanism, a bag opening mechanism, a suction nozzle and bag body inserting mechanism, at least two heat sealing mechanisms and a finished product collecting mechanism. The machine is characterized in that a bag taking station, a bag opening station, an inserting station, at least one heat-sealing temporary parking station and a finished product collecting station are sequentially arranged on the rack along a bag body conveying path; the bag body horizontal conveying mechanism comprises a horizontal clamping conveying unit and a bag body machining process temporary clamping unit, all the heat sealing mechanisms are installed on the horizontal clamping conveying unit, and all the heat sealing mechanisms are in one-to-one correspondence with the inserting station and all the heat sealing temporary parking stations. The utility model has the beneficial effects that the bag body can be kept at an accurate position all the time, so that the working efficiency is improved; the number of the driving devices is effectively reduced, the energy utilization rate is greatly improved, the working efficiency is greatly improved, and the equipment cost and the production cost are greatly reduced.

The invention discloses a deep coal and rock gas horizontal well pressure drainage working system optimization method and system, and the method comprises the steps: building a dynamic relation between the pressure drop and the flow of an oil nozzle based on a Gilbert model, and predicting the change of the gas-water ratio at different stages in combination with a double logarithmic segmentation fitting formula of the flow-back rate and the gas-water ratio; constructing a fracture quasi-steady-state flowing substance balance equation, and deducing an inflow dynamic curve of the flowing bottomhole pressure and the water yield; a Gray multiphase flow model is adopted to calculate the wellbore pressure gradient, and an outflow dynamic curve of the flowing bottomhole pressure and the liquid production capacity is generated; a reservoir, a shaft and an oil nozzle pressure system are coupled through a node system analysis method, an inflow-outflow coordination point is matched, and the size range of the oil nozzle is dynamically optimized. The method realizes accurate prediction and real-time regulation and control of drainage and mining parameters, solves the problem of rapid attenuation of fracture conductivity caused by high stress sensitivity of coal rocks, reduces the risk of pulverized coal blockage, improves the gas recovery efficiency, and is suitable for efficient development of deep coal rock gas wells.

This invention discloses a dust suppression machine for building demolition, belonging to the technical field of building demolition. It includes a water storage base with a water pump inside, and a water supply pipe connected to one end of a dust suppression cylinder, with a motor installed inside the other end of the dust suppression cylinder. It also includes a first annular pipe fixed to the inner wall of the dust suppression cylinder near the water supply pipe, and the first annular pipe communicating with the water supply pipe; a support frame fixed to the upper surface of the water storage base, with the dust suppression cylinder rotatably mounted on the inner side of the support frame, and an expansion mechanism located in the middle of the dust suppression cylinder. This dust suppression machine for building demolition increases the spraying range by adding nozzles to the outside of the dust suppression cylinder. Compared to traditional methods of changing the spray angle and adjusting the horizontal position, it can further expand the spraying range, adjust the spraying distance, and recover liquid dripping near the dust suppression machine, reducing water waste.

The invention belongs to the technical field of fused salt heat storage tank leakage detection, and discloses a device for fused salt heat storage tank leakage detection and a working method thereof. According to the device for detecting the leakage of the fused salt heat storage tank, a rotary supporting assembly is rotatably mounted on a base, and an equipment mounting frame is further mounted on the base; a plurality of spray heads and a plurality of cameras are arranged on the equipment mounting rack; one end of the detection cylinder is provided with a detection pipe and an air inlet pipe, and the other end is provided with an air outlet; one end provided with the air outlet is provided with a distance sensor, and the other end provided with the air outlet is further provided with a piston plate through an elastic assembly; the control unit is used for controlling rotation of the rotary supporting assembly, controlling opening and closing of the spray head, obtaining data collected by the distance sensor and obtaining data collected by the camera. According to the technical scheme, bubble visual monitoring and pressure change monitoring are combined, and the sensitivity and accuracy of leakage detection are improved.

A spray head assembly includes an inlet assembly configured to receive a fluid, a body fluidly coupled with the inlet assembly, a head portion fluidly removably coupled with the body, and a filter assembly. The head portion includes a plurality of nozzles configured to discharge fluid from the spray head assembly. The body and the head portion define an interior chamber. The filter assembly is configured to filter the fluid supplied from the inlet assembly to the head portion. The filter assembly is configured to be received within the interior chamber.

The invention discloses a cutting device for a trolley frame and a production system of the cutting device, and relates to the technical field of laser cutting equipment.The cutting device comprises a clamping disc, a cutting head, a core rod and a transferring assembly; one end of the core rod is used for being inserted into a pipe fitting to do reciprocating motion, the core rod is coaxially sleeved with the slag scraping ring, the multiple separation nozzles are distributed around the core rod in the circumferential direction at intervals, a cooling channel is formed in the core rod, one end of the cooling channel communicates with the separation nozzles, and the other end of the cooling channel communicates with the separation nozzles. The slag scraping ring comprises a contact part with a soft outer ring, and can axially swing back and forth relative to the core rod; when the core rod extends into the pipe, the contact part swings in the direction close to the separation spray head and drives the opening of the separation spray head to horizontally face the direction deviating from the clamping disc; and when the core rod retreats from the interior of the pipe, the contact part swings in the direction away from the separation nozzle and drives the opening of the separation nozzle to outwards face the radial direction of the core rod. The aluminum alloy pipe fitting cutting device has the effect of improving the aluminum alloy pipe fitting cutting efficiency.

The utility model relates to the technical field of baby carriage tire injection molding processing, and discloses automatic injection molding equipment for processing baby carriage tires, which comprises a rack and a mold closing chamber, an injection bin is arranged on one side of the rack, the left end of the injection bin is connected with a feeding pipe, a feeding assembly is connected above the feeding pipe, and the left end of the feeding pipe is connected with a glue melting pipe. The left end of the glue melting pipe penetrates through the side wall of the mold closing chamber to be connected with an injection nozzle assembly, the injection nozzle assembly comprises an injection nozzle body and a dredging rod, the dredging rod is slidably sleeved with the injection nozzle body, the side wall of the injection nozzle body communicates with a storage barrel, and external threads are arranged on the outer wall of the right end of the horizontal part of the storage barrel; according to the utility model, after one-time injection molding action is completed, molten materials can be blocked and prevented from being drawn, meanwhile, the pressure in the mold can be maintained, the injection molding quality is effectively improved, meanwhile, the possible blockage of the injection nozzle body can be conveniently and quickly dredged, the downtime is reduced, and the production efficiency is improved.

The invention belongs to the technical field of tail gas treatment, particularly relates to a tail gas treatment device for difluoromethane preparation, and provides the following scheme aiming at the problem that the existing tail gas treatment device for difluoromethane preparation is not easy to maintain and upgrade: the tail gas treatment device comprises an absorption tank; the upper side of the fixed base is connected with the bottom of the absorption tank through a flange, a round hole is formed in the bottom of the fixed base, a conveying pipe is fixedly connected into the round hole, the upper side of the absorption tank is fixedly connected with a discharge pipe and a combustion bin, and the inner wall of the combustion bin is fixedly connected with the exterior of the discharge pipe; one end of the discharge pipe away from the absorption tank is fixedly connected with a nozzle. According to the tail gas treatment device for difluoromethane preparation, the tail gas treatment device can be designed into a filtering module and an alkali washing module, so that the tail gas treatment efficiency of the device can be improved under the condition that the overall complexity is not increased, and the tail gas treatment device is convenient to maintain and upgrade.

The dust falling device comprises a base, a fog gun barrel is installed above the base, a water tank is installed on one side of the base and communicates with the fog gun barrel through a pipeline, a plurality of spray heads are fixedly installed on one side of an inner cavity of the fog gun barrel, and an adjusting assembly is fixedly installed between the base and the fog gun barrel. A fan assembly is fixedly installed in an inner cavity of the fog gun barrel, a recycling assembly is installed above the water tank, the problem that water mist coalesces and falls off due to high-speed airflow of a traditional fog gun machine is solved through the recycling assembly, and a collecting plate is driven to be overturned and unfolded to form a funnel-shaped structure; the inclined flow guide face is used for receiving undiffused water mist which falls off due to disturbance of high-speed airflow of a draught fan and is close to a spraying opening of the mist gun barrel, the collected water mist is guided to return to the water tank through the collecting tray and the recycling pipe, efficient recycling of water resources which do not effectively participate in dust falling is achieved, and the water resource utilization efficiency of the device is improved. And the water resource consumption of dust falling operation of the device is reduced.