47results about How to "Avoid vortex phenomenon" patented technology

The invention discloses a pipeline configuration structure of a triple-inlet air cooler system for hydrogenation reaction effluents. The pipeline configuration structure is characterized in that an inlet header pipe is perpendicularly downwardly communicated with a middle point of a first pipeline, two ends of the inlet header pipe are respectively communicated with a second pipeline and a third pipeline, and a plane formed by the second pipeline and the third pipeline is perpendicular to a plane formed by the inlet header pipe and the first pipeline; the tail end of the second pipeline and the tail end of the third pipeline are perpendicularly communicated with a fourth pipeline, two ends and the center point of the fourth pipeline are respectively perpendicularly communicated with a fifth pipeline, a seventh pipeline and a sixth pipeline, a plane formed by the fifth pipeline, the seventh pipeline and the sixth pipeline is perpendicular to a plane formed by the first pipeline, the second pipeline and the third pipeline, and the fourth pipeline is quartered by three joints along the length direction of the fourth pipeline and the three joints are formed by the fourth pipeline jointed with the second pipeline, the third pipeline and the sixth pipeline respectively and the tail end of the fifth pipeline, the tail end of the sixth pipeline and the tail lend of the seventh pipeline are perpendicularly communicated with an air cooler header and quarter the air cooler header. The pipeline configuration structure has the advantages that phenomena of multi-phase flow erosion corrosion, deposition and blockage of ammonium salt and under-deposit corrosion due to uneven distribution of flow parameters of existing air cooler tube bundles can be reduced, unintended shutdown accidents are reduced, and the safe operation cycle of the air cooler system for the hydrogenation reaction effluents is prolonged.

The invention discloses a 40.5kV switch equipment system. The system comprises a switch cabinet; an instrument chamber, a handcart chamber, a feeder line chamber and a bus chamber are formed in the switch cabinet; the feeder line chamber is arranged above the bus chamber, the handcart chamber is arranged at the left side of the feeder line chamber and the bus chamber, the instrument chamber is arranged at the left upper corner of the handcart chamber, and a circuit breaker module is arranged in the handcart chamber; an upper conductive connector on the circuit breaker module is connected withan upper contact box type current transformer outlet arranged at the feeder line chamber, the inlet of the upper contact box type current transformer is connected with an upper branch bus connector through a grounding switch; a lower conductive connector on the circuit breaker module is connected with a lower contact box type current transformer outlet arranged at the bus chamber, and the lower contact box type current transformer inlet is connected with a lower branch bus connector; and the circuit breaker module comprises a frame, a vacuum arc extinguish chamber, an operating mechanism, a connecting insulation pull rod and an insulating brace rod.

The invention belongs to the technical field of pipe joints, and particularly relates to an inner supporting device of a pipeline buckling joint and a full-bore buckling connection method. The inner supporting device is used for carrying out full-bore buckling connection on the pipe joint and a pipeline, and is particularly suitable for non-reducing type buckling connection of an oil conveying middle-high pressure composite pipeline and the pipe joint. According to the main technical scheme, the inner supporting device comprises a supporting body arranged in a joint core pipe, wherein the surface of the supporting body is attached to the inner wall of the joint core pipe; the supporting body is formed by splicing two or more supporting strips; and the supporting strips are provided with wedge-shaped splicing faces. The inner supporting device is simple in structure and convenient to use, and is arranged in the pipe joint, so that mounting and dismounting are facilitated; and by means of the buckling connection method of the inner supporting device, the joint core pipe cannot be radially contracted when the pipe joint and the pipeline are connected in a buckling manner, full-bore connection is achieved, and the beneficial effects of being firm in connection, tight in sealing, smooth in conveying and high in safety performance are achieved.

The invention discloses a prefabricated pump station. The prefabricated pump station comprises a prefabricated barrel, and a water inlet and a water outlet are formed in the prefabricated barrel. A pump barrel is arranged in the prefabricated barrel, and a water pump is arranged on the bottom section of the pump barrel. The upper end of the pump barrel communicates with the water outlet. Water flow falls into the bottom of the prefabricated barrel through the water inlet, is drawn into the pump barrel through the water pump located at the bottom of the prefabricated barrel and flows out through the water outlet, and a flow equalizing separation plate is arranged at the lower end of the water inlet. The flow equalizing separation plate is fixedly arranged on the inner wall of the prefabricated barrel and converts single-direction input water of the water inlet into annular water flow, and the annular water flow evenly falls onto the bottom of the prefabricated barrel. It is avoided thatthe water flow fixedly flows in a single direction at high flowing speed or impacts on the pump barrel, and consequently water flow turbulence is avoided. In particular, existing direct-in water flowis changed into the annular water flow, the flow equalizing separation plate is located around the barrel, water is drained downwards through water drainage openings evenly formed in the flow equalizing separation plate, the water flow rushing into the water inlet do not impact on the barrel directly, and therefore input water is equivalently and evenly drained downwards.

The present invention relates to a nozzle for a paint spraying device. More particularly, the nozzle relates to a nozzle for a paint spraying device. The nozzle atomizes a coating material supplied from the outside in a rotary dispersing unit for one time, and simultaneously the nozzle atomizes the coating material which is atomized in the rotary dispersing unit for one time for twice. The coatingmaterial can be micronized, the particle size of the finely divided coating particles can be ensured, thereby the coating quality is improved and the cleaning efficiency of the rotary dispersion unitis greatly improved.

The invention discloses a constant-radial-flow stable pressure clean room air supply system which comprises an air deflector, a slow flow layer, a filter screen layer and a flow equalizing plate. The air deflector is formed by splicing a plurality of grating plates. Positioning pieces are arranged on the front side of each grating plate in a protruding mode. Installation grooves are correspondingly formed in the rear side of each grating plate. The positioning pieces of each grating plate are inserted into the installation grooves of the adjacent grating plate. The slow flow layer is arranged at the lower end of the air deflector and is of a hollow bracket structure. The filter screen layer is arranged at the lower end of the slow flow layer, and the periphery of the filter screen layer and the periphery of a clean room are sealed. The flow equalizing plate is arranged at the lower end of the filter screen layer in an attached mode and arranged at the upper end of the clean room in a covering mode. The gridding density of the air deflector is gradually decreased from the center to the periphery. The air deflector with the gridding density being gradually deceased from the center to the periphery is adopted, the flow speeds of air flow in all positions of the air deflector are equalized, the technical problem that vortexes are generated in the clean room is solved, and the indoor cleanliness level is improved.

The invention provides a draught fan structure and an air-conditioner, and relates to the technical field of air-conditioners. The draught fan structure comprises a volute base and a volute cover. Thevolute base is detachably connected with the volute cover in the axis direction of the volute base, the volute cover is provided with a first cavity and a first volute tongue located in the first cavity, and the volute base is provided with a second cavity and a second volute tongue located in the second cavity, the first cavity and the second cavity are combined into an air passage, and the first volute tongue abuts against the second volute tongue. Compared with the prior art, the draught fan structure adopts the first cavity with the specific value range of 1/2-8/9 and the first volute tongue with the included angle range of 2-5 degrees, size parameters of the volute base and the volute cover are reasonably allocated, the vortex wind phenomenon is avoided, the generated noise can be effectively reduced, the noise pollution is avoided, and the practicability is high.

The invention provides high-gloss water-based paint and a preparation method thereof.The water-based paint is prepared from modified ethyl acrylate, a filler, a modified dispersing agent, an antifoaming agent, a thickener, a leveling agent, a wetting agent, a modified curing agent and water, and the preparation method comprises the steps that mixing the modified dispersing agent, the modified ethyl acrylate and the water to prepare a first mixed solution; and adding the filler, the antifoaming agent, the thickener, the leveling agent and the wetting agent into the first mixed solution to prepare a second mixed solution, adding the modified curing agent into the second mixed solution, and uniformly stirring to obtain the high-gloss water-based paint. According to the invention, the phenomenon that prickly heat easily occurs on the surface of a paint film of conventional water-based paint is overcome, and meanwhile, the improved water-based paint still has good surface performance and has good application prospect.

The invention belongs to the technical field of IT (Information Technology) industry, and particularly relates to a ZC intelligent differential pressure balancing flowmeter. The intelligent differential pressure balancing flowmeter comprises a pressure sensor, a temperature sensor and a display and is characterized in that a dual self-locking protection regulating valve is arranged at the front end of a throttling element; the front part and the rear part of the throttling element are respectively provided with a pressure tapping ring; the pressure sensor is arranged at the front end of the throttling element; the temperature sensor is arranged at the front end of the throttling element; a capacitance-type pressure difference capsule sensor is connected with the rear end of the throttling element; each parameter signal line is connected with a central processing unit; and the central processing unit is connected with the display. The invention can obviously eliminate the vortex phenomenon generated at both sides of the throttling element and is inimitable by other throttling elements. Moreover, the flowmeter has strong rot resistance and low purchasing cost and can realize bidirectional flow measurement. The high-intelligent meter integrating three elements of pressure, temperature and flow is powered by a lithium battery, does not generate pollution and realize bidirectional flow. The intelligent differential pressure balancing flowmeter has the precision up to 0.3 percent, reaches the world advanced level and fills the domestic blank.

The invention discloses a flue gas desulfurization absorption tower with a twin-stage air flow distribution device. The flue gas desulfurization absorption tower comprises a tower body, a slurry pondlocated at the bottom of the tower body and the twin-stage air flow distribution device, a spray pipe and a demister which are sequentially arranged at the position, above the slurry pond, in the tower body from bottom to top; the tower body is provided with an absorption tower inlet communicated with the slurry pond, and the top end of the tower body is provided with an absorption tower outlet. The flue gas desulfurization absorption tower achieves rectification and uniform distribution of smoke entering the tower through the twin-stage air flow distribution device, when the smoke passes through the twin-stage air flow distribution device, the air liquid generates the strong impact effect: in the falling process of absorption slurry drops, the drops are broken again by the smoke which isaccelerated to go up when the drops pass through the twin-stage air flow distribution device, a new mass transfer absorption surface is generated, which is amount to, a spray layer without a circulation pump is additionally arranged, thus the mass transferring efficiency and the absorption efficiency are increased, and the operation energy consumption is saved.

The invention provides a draught fan structure and an air-conditioner, and relates to the technical field of air-conditioners. The draught fan structure comprises a volute base and a volute cover. Thevolute base is detachably connected with the volute cover in the axis direction of the volute base, a first cavity is formed in the volute cover, a second cavity is formed in the volute base, and thefirst cavity and the second cavity are combined to form an air passage. Compared with the prior art, the draught fan structure adopts the first cavity with the specific value range of 1/2-8/9 and thesecond cavity with the specific value range of 1/9-1/2, size parameters of the volute base and the volute cover are reasonably allocated, the vortex wind phenomenon is avoided, the generated noise can be effectively reduced, the noise pollution is avoided, and the practicability is high.