52results about How to "Optimizing Flow Paths" patented technology

A micro-channel heat exchanger comprises an upper cover plate, a lower cover plate, a transverse heat exchange structure, a longitudinal heat exchange structure, a middle partition plate and working medium inlet/outlet units. The upper cover plate, the middle partition plate and the lower cover plate are sequentially arranged in parallel, and a transverse heat exchange piece unit is arranged between the upper cover plate and the middle partition plate; a longitudinal heat exchange piece unit is arranged between the middle partition plate and the lower cover plate; and the transverse heat exchange piece unit and the longitudinal heat exchange piece unit are each provided with one inlet/outlet working medium unit; the transverse heat exchange structure at least comprises a transverse heat exchange unit, and the longitudinal heat exchange structure at least comprises a longitudinal heat exchange unit. The flow process of each flow way can be designed to be the same, and a diffusion fusion welding structure can be adopted for connection of partition plates. According to the heat exchanger, multilayer cross flow, uniform heat exchange and flow disturbance can be achieved, the heat exchange efficiency of the heat exchanger can be further improved, and the running cost is reduced.

A continuously variable fluent control valve for controlling supersonic flow of gas. The valve has an upper plate with a very slightly angled physical control surface and a lower plate with a physical nozzle inlet. As the valve opens and closes during supersonic flow, a hydrodynamic pintle forms in the nozzle inlet just below the physical control surface. The hydrodynamic pintle provides a fluid control surface for redirecting flow from horizontal fllow to vertical flow through the nozzle and, depending on the expansion needs of the supersonic flow, the hydrodynamic pintle changes shape, expanding or shrinking in the axial direction of the valve. Because of the nearly flat physical control surface of the upper plate, matieral ablation is significantly reduced. The fluid-fluid boundary between the hydrodynamic pintle and the supersonic flow produces a flow through the nozzle with little or no recirculation.

The invention discloses a heat exchanger and an air conditioner, and belongs to the technical field of air conditioners. The heat exchanger comprises one or more crack fins and one or more flat platefins, wherein one or more through holes are formed in each crack fin and runs through heat exchange tubes, and the adjacent through holes are communicated through cracks so that air can circulate in the cracks of the adjacent crack fins; one or more through holes are formed in each flat plate fin and used for running through the heat exchange tubes, and each flat plate fin is arranged between theadjacent crack fins so that the crack fins between the adjacent flat plate fins can form an air circulation region. In the heat exchanger, the flat plate fins are inserted into the crack fins throughpenetrating, in this way, the flowing route of the air is optimized, the heat exchange effect of the heat exchanger is improved, and heat exchange efficiency is improved.

The invention relates to methods and apparatuses for producing Class A biosolids. In yet another embodiment, the invention relates to a method comprising digesting waste material by anaerobic digestion, and yielding Class A biosolids. In still yet another embodiment, the invention relates to a system for anaerobic digestion of waste material to produce Class A biosolids. In still yet another embodiment, the invention relates to a system for anaerobic digestion of waste material comprising a mixing chamber, a digester, a heating pit, and an effluent pit.

A heat exchanger comprising a plurality of heat transfer tubes adapted to transport heat transfer fluid from an inlet to an outlet, the heat transfer tubes comprising elongate hollow members adapted to receive the heat transfer fluid therein, the heat exchanger adapted to receive a flow of heat removal fluid flow between the heat transfer tubes, wherein the heat transfer tubes are arranged such that the heat removal fluid is caused to follow a substantially undulating path through the heat exchanger.

A gooseneck pipe includes a first pipe half having a first radiused centerline curve, and a second pipe half fixed to the first pipe half and having a second radiused centerline curve. The first and second pipe halves define a flow path. Cross-sectional diameters of the first and second pipe halves vary along the flow path. The varying diameters of the first and second pipe halves serve to mitigate pressure losses due in part to Dean vortices or secondary flow patterns in the flow path when a fluid is turned in the gooseneck pipe.

An electronic device comprises a chassis, a plurality of separation plates and a plurality of electronic modules; the plurality of separation plates are separately arranged in the chassis in a straddled mode; every electronic module is arranged between the two corresponding adjacent separation plates; the chassis comprises a front plate, a rear plate, two lateral plates and a base plate; the separation plates are separately arranged between the front plate and the rear plate in a parallel mode and perpendicularly connected with the two lateral plates; the bottom of the front plate is provided with an air inlet; a gap is formed between the bottom of every separation plate and the base plate; the air flow enters the chassis from the air inlet and flows between every two adjacent separation plates through the gap formed at the bottom of every separation plate to perform heat dissipation on the electronic module which is arranged between the two adjacent separation plates and the air flow after heat dissipation passes above the electronic module to flow out of the rear plate. According to the electronic device, a heat dissipation channel is formed between every two adjacent separation plates and accordingly the flow path of the air flow is improved, the division on the air flow is implemented, and the heat dissipation effect of the electronic device is improved.

The invention provides a heat dissipation system of a dry screw vacuum pump, belongs to the technical field of vacuum pumps and solves the problems that the heat generated when screws in the existingdry screw vacuum pump rotate cannot be dissipated and the heat dissipation of the pump body is poor. The heat dissipation system of the dry screw vacuum pump comprises an oil tank, an oil pump and anoil pipe I used for connecting the oil tank with the oil pump, wherein a shaft hole I is formed in a screw I; a shaft hole II is formed in a screw II; an oil pipe component used for transporting oil liquid to the shaft hole I and the shaft II is arranged in the outlet of the oil pump; an oil returning component I is arranged on the screw I; an oil returning component II is arranged on the screw II. The heat dissipation system of the dry screw vacuum pump has the advantages of reasonable structure design and good heat dissipation effect.

The invention provides a flue gas flow velocity adjusting structure of an SCR denitration device, and aims to reduce the flue gas flow velocity deviation of a denitration outlet and uniformize the flue gas flow velocity of the outlet. The structure comprises a first group of flow guide plates, a second group of flow guide plates, a third group of flow guide plates and a group of flow equalizing plates; an SCR denitration flue comprises a first corner flue, a first straight pipe flue, a second corner flue, a third corner flue, a third straight pipe flue and a fourth corner flue; the first group of flow guide plates are arranged in the fourth corner flue; the second group of flow guide plates are arranged in the second corner flue; the third group of flow guide plates comprises a drainage part and a flow guide part which are uniformly arranged at intervals in the height direction of the fourth corner flue, the drainage part is parallel to the upper and lower surfaces of the fourth corner flue, and the flow guide part is parallel to the diagonal surface of a connecting flue; the group of flow equalizing plates comprises a plurality of flow equalizing plates which are arranged at intervals in the length direction of the gas inlet end of a low-temperature economizer, and the flow equalizing plates are vertically connected with the gas outlet end of the flue and are parallel to the cross section of the fourth corner flue.

The invention discloses a remote-delivery bladeless ventilating system used in the gunpowder and explosive field. By the adoption of the remote-delivery bladeless ventilating system used in the gunpowder and explosive field, the problem that explosion risks are caused easily in an existing ventilating system due to friction and collision between gunpowder and explosive dust or gunpowder and explosive particles at a rotary bearing and an impeller in the gunpowder and explosive field is solved. The remote-delivery bladeless ventilating system comprises an air source (1), an air storage tank (2), an air pipe (3), a one-way valve (4), a throttling valve (5) and a ventilating frame (6). The air source (1), the air storage tank (2), the one-way valve (4), the throttling valve (5) and the ventilating frame (6) are connected in sequence through the air pipe (3). The air source (1) and the air storage tank (2) are installed in safe places in a gunpowder-free and explosive-free environment. The ventilating frame (6) is installed in a dangerous place in a gunpowder and explosive environment. The remote-delivery bladeless ventilating system is simple in structure and low in energy consumption, and friction and collision between the gunpowder and explosive powder or particles and movement components in the ventilating system in the dangerous place in the gunpowder and explosive field can be avoided.

The invention discloses a pipe joint and method for inducing cold flow through axial resultant force of asymmetric annular grooves, and relates to the technical field of pipe joints. The pipe joint comprises a pipe joint body, an inner hole is formed in the pipe joint body, the end of a guide pipe can enter the inner hole, and a plurality of annular grooves are formed in the inner hole; the annular grooves comprise the asymmetric annular grooves, the asymmetric annular grooves comprise groove bottoms, one sides of the groove bottoms are connected with first groove tops through first groove walls, the other sides of the groove bottoms are connected with second groove tops through second groove walls, included angles between the first groove walls and the axial direction of the inner hole and between the second groove walls and the axial direction of the inner hole are different, asymmetric arrangement is formed, axial pushing resultant force is formed for plastic deformation cold flow, cold flow is induced to generate directional flow, so that the radial extrusion load peak value is reduced, the geometric necessary dislocation density in the cold flow can be fully improved, a gradient high-strength nano microstructure is formed, and the connection reliability can be greatly improved. The connecting manufacturability of the pipe joint and the metal guide pipe can be improved, the connecting strength of the pipe joint is greatly improved, and the fatigue life of the pipe joint is greatly prolonged.