1569 results about "Main duct" patented technology

The invention discloses a refrigeration pipe welding positioning method and device. The method comprises the following steps that S1, branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the welding gun, and a branch pipe of the main pipeline moves to cross the welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.

The invention relates to the technical field of aviation electromechanics, in particular to an electric ducted fan of an integrated heat dissipation structure and an aircraft. An electric ducted fan of an integrated heat dissipation structure comprises a main duct unit, a static blade unit, a movable blade unit, a motor, a heat dissipation duct unit and a heat dissipation unit. The main duct unit comprises a main duct wall; a main duct channel is arranged in the main duct wall; the stationary blade unit comprises stationary blades; the movable blade unit comprises movable blades; each heat dissipation duct unit comprises a heat dissipation duct wall; the heat dissipation duct wall is annular; a heat dissipation duct channel is formed in the heat dissipation duct wall; the radiating unit comprises a radiator; a cooling liquid flow channel and an air flow channel are arranged in the radiator; the cooling liquid flow channel is used for conducting heat of the battery; the air flow channel penetrates through the radiator in the axial direction of the heat dissipation duct channel. Therefore, the problem that the heat dissipation efficiency and the flight performance of the battery in the aircraft are difficult to consider at the same time is solved.

The invention belongs to the technical field of flame-retardant coating preparation, and discloses a flame-retardant coating preparation device and a preparation method thereof.The flame-retardant coating preparation device comprises a reaction cylinder, a water inlet, a first discharging pipe and a mixing mechanism arranged in the reaction cylinder and further comprises a discharging assembly installed at the top of a cavity of the reaction cylinder; the discharging assembly comprises a discharging opening fixedly formed in the top of the reaction cylinder and a funnel, and the funnel is rotationally provided with a conveying roller. According to the scheme, a mixture of water and a solvent is injected into the reaction cylinder through the water inlet, meanwhile, the turbine and the mixing blades rotate through rotation of the motor, and the turbine rotates to convey a mixed solution in the reaction cylinder to the top of the mixing cavity through the main pipeline; and meanwhile, the powder raw materials and the mixed solution in the mixing cavity can be stirred and mixed at a high speed through rotation of the mixing blades, the mixed coating can be discharged through a second discharging pipe, operation is completed, and the situation that the powder coating is accumulated and agglomerated is avoided.

The invention relates to the technical field of welding cooling, and provides a liquid nitrogen spraying welded plate cooling device and a design method thereof.The cooling device comprises a liquid nitrogen source used for providing liquid nitrogen; the input end of the spraying module is connected with a liquid nitrogen source through a main pipeline, the output end of the spraying module is provided with a plurality of spraying holes corresponding to the surface of the welded plate, and the main pipeline is provided with a flow regulating valve; the temperature acquisition module comprises a plurality of temperature sensors which are arranged at temperature measuring points of a welding plate; the control module is electrically connected with the temperature acquisition module and the flow regulating valve respectively; the structure of the spraying device is optimized through flow field simulation, it is ensured that liquid nitrogen is evenly distributed to the surface of a welded plate, local supercooling or superheating is avoided, and uniform cooling of the welded plate is achieved; data are collected through the temperature sensor, closed-loop control is formed in cooperation with the PID controller and the multiple adjusting valves, the liquid nitrogen flow, the spraying area and the spraying time can be accurately regulated and controlled, the inter-channel temperature is effectively controlled, the temperature is prevented from being too high, and it is guaranteed that the welding process is continuously and stably carried out.

The invention relates to the technical field of wellhead protection, and particularly discloses an oil production wellhead pressure self-adaption protection device which comprises a protection shell, an indicator lamp is installed on the protection shell, the protection shell comprises a shell body, and a main pipeline is arranged on the inner side of the shell body. A partition cavity, a pressurizing groove and a pressure sensing groove are sequentially formed in the outer side of the main pipeline from top to bottom, the partition cavity is a multi-angle deep groove, a partition assembly is installed in the partition cavity, one end of the partition assembly is installed on a hydraulic input pipe, and the hydraulic input pipes are communicated through hydraulic oil communication holes; by arranging the partition assembly, when blowout occurs, a pressure sensor collects pressure information, an electric signal controls a hydraulic assembly to extend, the sharp ends of triangular fault blocks pierce the interior of a pipeline, multi-direction pressure synchronous operation is formed among the four triangular fault blocks, the pipeline is rapidly cut off, and the pipeline cannot transport oil again; and rapid and complete plugging in the pipeline is realized.

The invention discloses a well drilling fracturing device for oil field yield increase, and relates to the technical field of oil field collection, the well drilling fracturing device comprises a fracturing filtering mechanism and a bottom rotating bearing installed in the fracturing filtering mechanism, the bottom of the fracturing filtering mechanism is provided with a connection sealing mechanism, and the bottom of the connection sealing mechanism is provided with a main pipeline; the fracturing filtering mechanism comprises a filtering support, a plurality of sewage draining holes are formed in the outer side of the filtering support, a worm gear limiting cover is fixedly installed at the bottom of the filtering support, rotating supports are symmetrically installed on the side, close to the interior of the worm gear limiting cover, of the filtering support, and rotating motors are fixedly installed on the outer sides of the rotating supports; by utilizing the structural characteristics of the vortex cleaning impeller, when the vortex cleaning impeller rotates anticlockwise, the temporary plugging agent can move towards the inner side of the filter screen cylinder under the action of the groove in the vortex cleaning impeller, so that the conveying efficiency of the temporary plugging agent is improved, and meanwhile, the vortex cleaning impeller can clean the outer surface of the filter screen cylinder.

A blade and a sealing element forming an assembly for a turbomachine turbine. The blade includes an airfoil and a platform to which the sealing element is connected. An internal channel passes through the platform so as to draw off fluid circulating in a primary duct that it delimits and to inject the thus drawn-off fluid into an inter-lip cavity delimited by the sealing element.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A flow of working fluid may be adjusted to a percentage sufficient to maintain temperature of the flow of compressed gas within the selected operating temperature range.

The invention discloses an energy-saving control system for dust removal equipment. The energy-saving control system comprises production equipment, a suction pipe net, an air door assembly, an air door control module, an air pressure detection device, a suction device and a main control module. The production equipment is provided with a machining area and a workpiece detection module. The suction pipe net is composed of a main pipeline and branch pipelines, and the branch pipelines correspond to all devices and are provided with air door assemblies. The air door control module opens and closes an air door according to the workpiece detection signal; the air pressure detection device monitors the air pressure of the main pipeline, the main control module adjusts the power of the suction device accordingly, and the system achieves on-demand dust removal, accuracy, high efficiency and remarkable energy conservation.

The utility model provides a length-adjustable high-pressure grouting pipe, which belongs to the technical field of high-pressure grouting pipes, and comprises a main pipeline, a corrugated pipeline communicated with the outlet end of the main pipeline, an end pipeline communicated with the outlet end of the corrugated pipeline, a steel wire mesh wrapped on the outer side of the corrugated pipeline, and a fixing plate, the fixing plates are fixedly arranged at the ends, close to each other, of the main pipeline and the end pipeline in a sleeving mode. One end of the guide rod is fixedly arranged on the fixing plate on one side, and the other end of the guide rod penetrates through the fixing plate on the other side; the corrugated pipeline is sleeved with the multiple positioning rings, the multiple positioning rings are arranged at the folding protruding positions of the corrugated pipeline in a one-to-one correspondence mode, and the positioning rings are arranged on the guide rods in a sliding mode; each positioning ring is provided with a V-shaped elastic piece, one end of each V-shaped elastic piece is fixedly arranged on the corresponding positioning ring, and the other end of each V-shaped elastic piece is fixedly arranged on the steel wire mesh. According to the utility model, the length of the high-pressure grouting pipe can be conveniently adjusted on the basis of ensuring that the telescopic part of the grouting pipe is not easy to deform and damage.

The invention relates to the field of machining environment-friendly treatment, in particular to an atomized cutting fluid discharging and treating system and a control system and method thereof. The treatment system comprises a centralized exhaust system, a gas collecting hood, an induced draft fan, a wind pressure buffer device and an adjustable wind resistance structure in the buffer device. The induced draft fan is a frequency conversion fan, and the power can be automatically adjusted manually or through a state sensing device so as to adapt to the atomization state of the equipment. The air pressure buffering device is arranged between the induced draft fan and the main air pipe, airflow resistance is changed by adjusting an air resistance structure, and outlet air pressure stability is achieved. The control system comprises a plurality of sensors and is used for collecting wind pressure and flow speed in real time, and the controller generates a control instruction based on collected data and drives the wind resistance structure to dynamically respond to induced air changes. The system is high in adaptability, atomized cutting fluid gas generated by open-type equipment can be efficiently collected, the emission control effect is improved, and safe connection with a centralized exhaust system is guaranteed.

The utility model discloses underground water monitoring well washing sampling equipment, which relates to the technical field of well washing sampling equipment, and comprises a vehicle body, rollers and a main pipeline are arranged on the bottom surface of the vehicle body, a middle through hole is formed in the main pipeline, an elbow and a suction pipe are respectively arranged on the upper surface and the bottom surface of the main pipeline, and the elbow is communicated with the suction pipe through the middle through hole. And the suction pipe is fixedly communicated with a high-pressure air pipe. The sampling cavities are circumferentially designed in the main pipeline, a piston is slidably connected to the interior of each sampling cavity, and an adjusting screw rod is rotatably connected to each piston. The device is reasonable in design structure, adopts a structure that the sliding piston is matched with the adjusting screw rod, can control the piston to move up and down by manually rotating the adjusting screw rod after a main pipeline reaches a preset depth, realizes accurate sampling, avoids the problem of position deviation possibly caused by directly extracting a sample from a well bottom, and improves the sampling efficiency. And the authenticity and representativeness of the collected sample are ensured.

An adapter assembly relates to the technical field of adapter hoses. The adapter assembly includes a main pipeline and an adapter pipeline. The main pipeline configured to circulate gas or liquid. The adapter pipeline is provided with a near end and a far end opposite to the near end of the adapter pipeline. The near end of the adapter pipeline and the main pipeline are integrally formed. The far end of the adapter pipeline is configured to be connected to a liquid channel or a gas channel. After the adoption of the above technical solutions, an adapter pipeline is arranged on the main pipeline, and the other end of the adapter pipeline sleeves a liquid channel or gas channel. So that the main pipeline is not easily washed away by the water pressure or gas pressure, which can be applicable to gas channels or liquid channels in different shapes.

A control method is for a compressed air supply system with which a control device is associated. The method includes: receiving via the control device a supply demand, activating a compressed air generator to provide compressed air at a compressed air connection when the control device receives a supply demand, identifying a regeneration execution time depending on the supply demand and / or a degree of saturation of an air dryer, activating a switching valve to open a branch line when the control device identifies a regeneration execution time, and returning compressed air from the branch line counter to a filling direction through a pneumatic main line to regenerate the air dryer. A control device is for carrying out the method. A vehicle includes such a control device.

The invention relates to the technical field of intelligent temperature control, and discloses an intelligent temperature control system of an automatic spray cooling device of a large transformer, comprising: a spray unit comprising a spray main pipeline and a plurality of branch pipelines which are symmetrically arranged along the axial direction of a transformer radiator, the inlet end of the main pipeline is connected with a booster pump group with a water quality filtering function and a detachable water storage tank; a sensing unit; a control unit; according to the quick disassembly and assembly structure, a branch pipeline is made of a polypropylene random copolymer pipe, and a spray head is connected with a support through a polygonal rod rotation locking mechanism. A self-adaptive algorithm and a load rate-environment temperature-spraying intensity three-dimensional relation model are built in the embedded dynamic temperature control module, and a spraying strategy can be dynamically adjusted according to real-time data. And when the difference value between the environment temperature and the reference temperature exceeds 5 DEG C, the calculation of a spraying intensity compensation coefficient is triggered, and parameters are corrected in combination with the ratio of the load rate to the rated capacity, so that spraying control is realized.

The invention relates to a mixing apparatus (1) with a main line (3), in which a liquid (F) flows along a direction of flow (FR), and a secondary line (9). The main line (3) has an inlet (4), an outlet (5) for discharging the liquid (F) conducted through the main line (3), and a three-way valve (8) at a beginning (6) and at an end (7). The secondary line (9) is connected via the three-way valves (8) to the main line (3) and, together with the main line (3), forms a mixing circuit (MKL). The liquid (F) can be pumped with a pump (11) through the main line (3) and through the secondary line (9) in the mixing circuit (MKL). In addition, at least one additive inlet opening (26) is provided on the main line (3) for adding an additive into a mixing zone (M) of the main line (3). The mixing apparatus (1) furthermore has at least one swirling means (13) in the main line (3). The invention moreover relates to a washing machine having such a mixing apparatus (1) and to a method for intermixing an additive with a liquid (F).

The invention relates to a desulfurization and carbon removal method for a supergravity coupling impinging stream reactor, which is characterized in that a supergravity impinging stream device is driven by a motor to rotate, under the action of centrifugal force, an absorption liquid flows through a main pipeline and a sleeve outside the main pipeline to reach an impinging zone, and four groups of impinging streams are arranged in the impinging zone; the circle centers of the circular nozzles are distributed on the same circle, four groups of impinging streams are arranged in a surrounding manner to generate multiple impinging to form four primary impinging surfaces, every two radial jet flows collide with each other to form four secondary impinging surfaces, absorption liquid forms an atomized radial diffusion area under a non-immersion condition, and large-area atomized absorption liquid is generated. And the supergravity impinging stream device further stirs the flue gas and the atomized absorption liquid in the rotating process, so that the atomized absorption liquid in the shell is fully mixed and contacted with the gas, the gas-liquid absorption process is completed, and efficient desulfurization and carbon removal are realized.

The invention provides an inlet valve array, a cleaning method and a biosynthesis system based on the inlet valve array. A first connecting flow channel and a second connecting flow channel of the inlet valve array are connected with a cleaning main pipeline through pipelines; outlets of the first connecting flow channels of the two inlet valve arrays are connected with a first liquid inlet main pipeline through pipelines. A first connecting flow channel of one inlet valve array is connected with a second liquid inlet main pipeline through a pipeline, the first liquid inlet main pipeline and the second liquid inlet main pipeline are respectively connected with a column front input pipeline, and the column front input pipeline is connected with the input ends of a plurality of composite columns through a plurality of valves; an output end pipeline of each composite column is connected with an inlet of a post output pipeline through a corresponding valve; an outlet of the post-column output pipeline is connected with a discharge pipeline and a second liquid inlet main pipeline through valves; the device has the advantages that cross contamination generated when different materials are conveyed can be avoided, the synthesis purity is improved, and waste of the materials is reduced, so that the cost is reduced; and the pump can be switched without stopping.

The utility model discloses a liquid cooling heat dissipation module, which comprises a heat dissipation plate and a pressure liquid pump, at least one group of heat dissipation pipelines is arranged in the heat dissipation plate, each group of heat dissipation pipelines comprises a main pipeline and a plurality of branch pipelines, two ends of the main pipeline are respectively communicated with two ends of each branch pipeline, and liquid cooling working media are arranged in the main pipeline and the branch pipelines; and the pressure liquid pump is at least arranged on the main pipeline and is used for providing power for the liquid cooling working medium to circularly flow in the main pipeline and the branch pipelines. The liquid cooling mode is adopted, heat of a heat source can be taken away in time, the temperature equalizing effect of the heat dissipation plate can be effectively improved, the problems of uneven temperature distribution, untimely heat dissipation and the like caused by a long heat dissipation path are solved, the heat dissipation pipeline is divided into the main pipeline and the branch pipelines, the flow speed of a liquid cooling working medium can be increased, and the heat dissipation efficiency is improved. Therefore, the heat exchange efficiency is improved, and the heat dissipation capacity and competitiveness of products are improved. The utility model further discloses a liquid cooling heat dissipation device with the liquid cooling heat dissipation module and electronic equipment.

The conveying and injecting system comprises a main pipeline, a cooling device and a supercharging device, the main pipeline is used for receiving supercritical carbon dioxide from a carbon dioxide capturing device, and the other end of the main pipeline is connected with an inlet of the cooling device; the cooling device is used for cooling the supercritical carbon dioxide to a preset temperature, so that the supercritical carbon dioxide is converted into dense-phase carbon dioxide, an outlet of the cooling device is connected with an inlet of the pressurizing device, an outlet of the pressurizing device is used for being connected with an injection well, and the pressurizing device is used for pressurizing the dense-phase carbon dioxide to a preset pressure. According to the conveying and injecting system, carbon dioxide is conveyed to the vicinity of a sealing place in a supercritical phase state in a long distance in the main pipeline and then conveyed to the injecting well after being cooled and pressurized, and the pressure of supercritical carbon dioxide is smaller than that of dense-phase carbon dioxide, so that the risk that the main pipeline is broken can be reduced; and the stability and safety of carbon dioxide conveying are improved.

The invention discloses a ball mill centralized gas supply system and a pressure stabilization control method. The ball mill centralized gas supply system is composed of at least one ball mill unit, a gas source system unit, a main pipeline unit, a branch pipeline unit and a control system unit. The air source system unit supplies air to a pneumatic clutch and a gear lubricating device in the ball mill unit; the system comprises a first air compressor, a second air compressor and a third air compressor, the first air compressor is connected with a first air storage tank through a first air source pipeline, the first air source pipeline is connected with a first pressure transmitter and a first electric ball valve, and the second air compressor is connected with a second air storage tank through a second air source pipeline. A second air source pipeline is connected with a second pressure transmitter and a second electric ball valve, and a third air compressor is connected with a third pressure transmitter; and the PLC is connected with each electric control component in the gas source system unit and the branch pipeline unit through cables. Connecting pipelines are compactly arranged, the air supply efficiency is high, the energy-saving effect is remarkable, the pressure stabilizing effect is good, and efficient and stable operation of the ball mill can be guaranteed.

The invention relates to the technical field of medical equipment, and discloses an intelligent temperature control and flow control system for hemodialysis, which comprises a dialysis pipeline shunting shell; the two main pipelines are arranged in the dialysis pipeline shunting shell, and a plurality of slave pipelines are arranged between the two main pipelines; when the flow rate of the liquid is low, the slave pipeline is far away from the heating component, the temperature of the liquid cannot rise too fast under the condition that the flow rate is low, the knob part can move to the slave pipeline when controlling the valve component to increase the flow rate of the liquid, and the slave pipeline moves close to the heating component. The distance between the auxiliary pipeline and the temperature rising component is reduced, when the flow rate of liquid with large flow is high, the auxiliary pipeline gets close to the temperature rising component, heat generated by the temperature rising component can be better received by the auxiliary pipeline and conducted to the liquid, and the flow adjusting system and the temperature control system can cooperate to achieve the purpose that the flow adjusting system and the temperature control system work together. A preset temperature value can be provided for the dialysis liquid all the time when the flow is increased or decreased.

Support for liquid dispensers, which comprises a main body which can be coupled with a liquid dispenser and includes a main duct to allow a flow of liquids from the main body to the liquid dispenser, wherein the main body extends along a longitudinal axis from a rear side to a front side of the main body, wherein the main body is provided with a first coupling suitable to fix the support to a tube, wherein the first coupling comprises a seat suitable to surround a portion of the tube, so that the tube can move axially but not radially in the seat.

The utility model discloses an emergency cut-off device for natural gas leakage, which relates to the field of natural gas transportation and safety equipment, and comprises a main pipeline, a home-entry pipe, a monitoring cut-off mechanism and an active rapid cut-off mechanism, the main pipeline is fixedly communicated with the home-entry pipe, the monitoring cut-off mechanism is arranged on the home-entry pipe, and the active rapid cut-off mechanism is arranged on the main pipeline. According to the utility model, through the monitoring cut-off mechanism and the active rapid cut-off mechanism which are arranged on the home-entry pipe, real-time monitoring and rapid emergency processing of natural gas leakage are realized, and when the concentration monitor fails or is powered off, a user can manually pull down a pull ring on a fixing nail to cut off the natural gas leakage, so that the natural gas leakage can be timely monitored, and the service life of the natural gas leakage can be prolonged. The pull rope is released, the push rod is pushed to move upwards through resilience force of the spring, the push-pull valve is rapidly closed to cut off the gas source, the device has automatic and manual double cut-off functions, and the safety and emergency treatment capacity of natural gas use can be effectively improved.

The invention discloses a reactor coolant system flow monitoring device and a signal control method, and belongs to the technical field of reactor coolant systems.The reactor coolant system comprises at least three main loops, a first pressure tapping hole located in the outer wall is formed in a main pipeline transition section elbow of each main loop, and a second pressure tapping hole located in the outer wall is formed in the main pipeline transition section elbow of each main loop; the at least four second pressure tapping holes are formed in the inner wall; the flow monitoring device comprises at least four first differential pressure sensors and at least two second differential pressure sensors; the positive pressure ends of the at least four first differential pressure sensors are communicated with the first pressure tapping hole, and the negative pressure ends of the at least four first differential pressure sensors are communicated with the at least four second pressure tapping holes in a one-to-one correspondence mode. The at least two second differential pressure sensors are arranged in parallel, and the two ends of the at least two second differential pressure sensors communicate with an inlet pipeline and an outlet pipeline of the main pump on the main loop correspondingly.

The utility model relates to the technical field of urban rainwater recycling, and discloses an urban rainwater collecting and filtering device which comprises a rainwater filtering box body, a main pipeline is arranged on the rainwater filtering box body, a filtering element assembly is arranged in the rainwater filtering box body, and a water inlet is fixedly connected to the rainwater filtering box body. When a butterfly-shaped gear plate rotates in a reciprocating mode, the butterfly-shaped gear plate is meshed with two gears in the two slag discharging and filtering assemblies, the gears can drive rotating hoppers on a fixed shaft to rotate, the two rotating hoppers rotate oppositely at the moment, one rotating hopper can rotate towards the outer side till impurities attached to the rotating hopper in an intercepted mode can turn over and fall into a movable collecting bin, and therefore the impurities can be collected conveniently. And then reverse rotation of the other rotating hopper is just seamlessly connected and blocked in the main pipeline, leaves and impurities on the rotating hoppers can be effectively cleaned and collected through operation of the arranged power deslagging assembly, and the problem that the rainwater recycling efficiency is affected due to the fact that workers need to frequently clean the blocked leaves and impurities is solved.

The utility model provides a full-automatic multifunctional pilot platform system and a chromatographic system thereof. The platform system comprises a first input main pipeline with a first input pump and a second input main pipeline with a second input pump, the first input main pipeline is connected with a plurality of input pipelines, and on-off of the first input main pipeline is controlled through corresponding valves; the second input main pipeline is also respectively connected with the plurality of input pipelines, and the on-off of the second input main pipeline is controlled through corresponding valves; the outlet ends of the input pipelines are connected with liquid inlet ports of the corresponding movable installation modules respectively, and the movable installation modules are further provided with a plurality of backflow ports and a plurality of liquid outlet ports. The liquid outlet port is respectively connected with a plurality of collecting pipelines through output pipelines; according to the chromatographic system, an RTF column is mounted in a movable mounting module; during use, two tangential flow chromatographic columns are adopted and operate alternately: one is in a loading mode, and the other is in an elution mode; the multi-functional biological treatment device has the advantages that modularization is achieved, multiple functions are achieved according to different process requirements, and the downstream production process of biological medicine is met.

The utility model relates to the field of bowl steaming machines, in particular to a steam conveying structure for a steaming cabinet of a bowl steaming machine, which comprises a steam conveying pipe arranged on a steaming cabinet body, and a plurality of bin door structures used for placing steaming bowls are vertically arranged in the steaming cabinet body in an array mode. The steam conveying pipe comprises a main pipeline arranged on the steam cabinet body, a branch pipe arranged on the main pipeline in a communicating mode, a steam pipe arranged below the bin door structure and communicated with the branch pipe, and a control valve arranged on the branch pipe. The steam cabinet has the advantages that water vapor enters the branch pipes through the main pipeline and finally enters the steam cabinet body after being discharged from the steam pipe, and therefore the steam bowls placed on the bin door structure are steamed and heated; as the steam pipe is arranged below each layer of bin door structure, namely, each layer of steaming bowls are close to a steam source, the situation that the cooking time of the steaming bowls is inconsistent due to the fact that the upper layers and the lower layers of the steaming bowls are different is avoided.

The application belongs to the technical field of dust removal equipment, and discloses a spraying dust removal device for building engineering and a use method, wherein the spraying dust removal device comprises a main pipeline, a fan is installed in the inner cavity of the main pipeline, an annular plate is fixedly installed on the outer surface of the front end of the main pipeline, a plurality of movable pipes are uniformly and movably connected to the annular plate, an arc-shaped pipe is fixedly connected to the front end of each movable pipe, a plurality of first nozzles are installed on the arc-shaped pipe, a position adjusting assembly is arranged at the rear end of each movable pipe, an annular pipe is arranged at the inner cavity of the main pipeline close to the front end, a plurality of second nozzles are installed on the annular pipe, a water supply assembly is arranged on the outer wall of the main pipeline, a caliber adjusting assembly is arranged on the front end surface of the main pipeline, the caliber adjusting assembly is connected with the movable pipe, a support is movably installed on the main pipeline, a control box is installed on the front side wall of the support and a bottom plate is arranged at the bottom surface of the control box, and a driving assembly is arranged on the support; the spraying dust removal device can automatically adjust the spraying range, distance and position of water mist.

A system and method of controlling cabin air within a vehicle includes determining an elevated thermal level within a vehicle, opening a duct purge valve based on the elevated thermal level and communicating air through a primary duct to a purge duct through the purge valve.