30results about How to "Reduced flow space" patented technology

The invention relates to a cloth negative pressure finishing singeing device, which comprises a frame, a cloth guide roller, a carding assembly and a negative pressure hair removal assembly. During the rotation, the fibers attached to the surface of the cloth are erected, adsorbed and pulled; there is a fluff shaping space between the negative pressure hair removal component and the cloth. And the adsorption holes and the deflectors and heating wires respectively arranged on both sides of the removal pores, the airflow flows along the hair removal chamber and is guided by the deflectors to form an airflow acceleration zone, and a negative pressure zone is formed between the deflectors and the adsorption holes; The carding component erects the fiber and shapes it, and then pulls the fiber with the adsorption force to contact the heating wire to realize singeing. At the same time, the broken fiber is collected by the airflow conduction separation component, which solves the problems existing in the prior art. Poor singeing effect and inconvenient dust removal technical problems.

A heat dissipating device includes a thermal conductive substance, a plurality of heat-radiating protrusions and a plurality of turbulence-generating structures. The thermal conductive substance has a first surface and a second surface opposite to the first surface. The heat-radiating protrusions are integrally formed with the thermal conductive substance on the first surface. At least one of the turbulence-generating structures is formed on the first surface of the thermal conductive substance in concaved manner, and arranged around a bottom periphery of the heat-radiating protrusions, so as to obstruct a development of a boundary layer around the bottom of the heat-radiating protrusions.

The invention discloses a plate-fin type heat exchanger baffle spray-head structure sealing head. The plate-fin type heat exchanger baffle spray-head structure sealing head comprises a sealing head main pipe, a shell disposed at the bottom of the sealing head main pipe and an outlet surface arranged at the bottom of the shell. A circular ring is welded to the bottom of the sealing head main pipe,a baffle spray-head structure is arranged on the circular ring, the baffle spray-head structure includes baffles I, baffles II and a baffle III, the baffles I are arranged on both sides of the baffleIII, and the baffles II are arranged at the positions between the baffles I and the baffle III. The plate-fin type heat exchanger baffle spray-head structure sealing head has the beneficial effects that inflowing high-pressure gas can be injected to corresponding outlet regions by additionally arranging the baffle spray-head structure at the tail end of the main pipe, and the uniformity of flow distribution at each outlet is effectively improved.

The invention relates to the technical field of sieve tube sand prevention well completion during oil and gas exploitation, in particular to a horizontal well sand and water production profile prediction method and a sand prevention and water control sieve tube optimization design method. According to easily obtained resistivity logging information, spontaneous potential logging information, natural gamma-ray logging information and interval transit time logging information, the stratum sand and water production cooperative relation is considered comprehensively, the high-speed inflow and sandproduction locations and region length at heterogeneous production intervals are identified, and the major designed target locations for sand and water control are determined. The problem of blindness of general water prevention and water control of a horizontal well is solved. The economic benefits are increased. Moreover, the method is simple, easy to realize and reliable in result.

The invention relates to a functional medical device (900) with a valve seat (803) for a non-return valve (1). In addition to a first position which is suitable for sterilizing gas, the non-return valve (1) is designed to assume a second functional position, in which the non-return valve (1) exerts a non-return function, by applying a force onto a portion of the non-return valve (1) and/or by moving the non-return valve. The non-return valve (1) is designed to remain in the second position after being successfully converted into the second position after the force and/or the moving element has been removed.

The invention relates to the field of air conditioners, in particular to a split wall hanging internal unit condensed water draining structure. The split wall hanging internal unit condensed water draining structure is provided with a draining outlet used for draining condensed water. A blocking component which is suitable for passing of water flow and can block dirt is arranged in the direction, facing towards the water flow, of the draining outlet. The technical problem that a draining outlet of a water-containing plate of a split wall hanging internal unit bottom shell is prone to being blocked in the prior art is solved, and then the split wall hanging internal unit condensed water draining structure long in cleaning cycle is provided.

The invention discloses a heating furnace for heating an annular component. The heating furnace comprises a furnace body, a heating medium driving component, a supporting piece, a flow guiding component and a hollow cylindrical body. A part of heat media in the heating furnace is sprayed on the outer peripheral surface of the annular component through the flow guiding component, and the other part of the heat media flows through an inner cavity of the hollow cylindrical body and is blown to the inner peripheral surfaces of bearings through a second heat medium channel on the hollow cylindrical body so that the inner peripheral surfaces of the bearings can be heated. Thus, the hollow cylindrical body has an effect of dividing a gas flow to a certain extent, and the upper end surface of the hollow cylindrical body is of a sealed structure, so that the flowing gas flow is completely converted into an effective heat exchange gas flow and limited in heat exchange spaces on the surfaces of the bearings. The high reynolds number of the gas flow in heat exchange areas of the bearings as well as the high heat exchange speed of the surfaces of the bearings and the gas flow are obtained, the flow speed is multiplied at the same volume flow rate, and the flowing gas flow is completely converted into the effective heat exchange gas flow; and at the same flow speed, the volume flow rate is decreased substantially, the temperature raising speed of the gas flow is multiplied, thus, the heating efficacy is improved, and the power of a electric heater is decreased greatly.

A pressure generator, wherein a piston 13 is stored in a cylinder 10 reciprocatingly in axial direction, a piston rod 14 fixed to the piston 13 is projected to the outside through a rod cover 12, check valves 31, 32 for negative pressure allowing air to flow into expansion and contraction chambers 21, 22 and stopping air to flow in reverse direction are installed in negative pressure feed passages 23, 24 connected between the expansion and contraction chambers 21, 22 and operating ports 5, 6, check valves 33, 34 for exhaust gas allowing air to flow from the expansion and contraction chambers 21, 22 to the outside and stopping air to flow in reverse direction are installed in exhaust gas flow passages 25, 26 for communicating the expansion and contraction chambers 21, 22 with the outside, and the negative pressure feed passages 23, 24 are brought into a vacuum state by the reciprocating motion of the piston 13.

The invention discloses an up-flow reactor and application thereof; the up-flow reactor comprises a reactor shell; a catalyst bed layer supporting grid and a catalyst bed layer are sequentially arranged in the reactor shell in the material flowing direction; an elastic supporting layer is arranged at the lower part of the catalyst bed layer and/or the upper part of the catalyst bed layer; the elastic supporting layer comprises a plastic elastomer bed layer and a ceramic ball supporting layer, the plastic elastomer bed layer comprises a plurality of plastic elastomer units, the plastic elastomer units internally comprise particles prepared from an elastic material, and gaps are formed between the plastic elastomer units and in the plastic elastomer units to serve as channels for fluid to flow through. The invention also provides an application of the up-flow reactor. The plastic elastomer bed layer in the up-flow reactor can deform synchronously along with expansion and contraction of the catalyst bed layer, bed layer pressure drop increase caused by particle abrasion in the floating process of a catalyst is prevented, and long-period stable operation of the up-flow reactor is guaranteed.

The invention relates to a shielding current eliminating device for a high-temperature superconducting coil. The device is composed of a framework, a cold head, a high-temperature superconducting strip, a stainless steel strip, binding posts, an alternating-current power source and a direct-current power source. The surfaces of the high-temperature superconducting strip and the stainless steel strip are not wrapped with an insulating material and are wound on the framework side by side; A groove is formed in the inner side of the framework; the groove at the inner side of the framework is provided with one binding post; round holes are formed in the outer side of the framework; the other binding post and the cold head are respectively mounted in the outer side of the framework. The inner sides of the high-temperature superconducting strip and the stainless steel strip share the binding post; the outer sides of the high-temperature superconducting strip and the stainless steel strip arerespectively connected with the independent binding posts; the high-temperature superconducting strip is connected with the direct-current power source to generate a static magnetic field in the center area of the coil; the stainless steel strip is connected with the alternating-current power source to provide current flowing between the layers of the high-temperature superconducting strip and the stainless steel strip to cause interlayer resistance heating, so that critical current in the high-temperature superconducting coil is reduced, and the influence of shielding current is eliminated.

The invention relates to an air adjusting device with gas-liquid mixing function and dual washing effects. The air adjusting device consists of an air purifying device, an air extracting device and a water supply device; a water tank consists of a first guide plate obliquely arranged, a horizontal second guide plate of which one end is connected to the bottom of the first guide plate, a third guide plate of which one end is connected to the other end of the second guide plate and obliquely arranged, and an adjustment plate covering on the second guide plate; one end of the adjustment plate is a fixed end hung on the first guide plate, while the other end is a movable end of which the high and low position can be movably adjusted; spaces into which filtered water flows are reserved between the adjustment plate and the first guide plate, between the adjustment plate and the second guide plate, and between the adjustment plate and the third guide plate; and the front end of the second guide plate is provided with an outlet for discharging the filtered water downwards.

The invention relates to an air flow channel assembly for a flow guide plate. The air flow channel assembly comprises a flow channel and an air blowing device, the flow channel comprises an air-inlet part and an air-outlet part, the air-inlet part and the air-outlet part form a communicating structure, an air blowing device is connected with the air-inlet part in a communicating mode, the cross section area, perpendicular to the axis of the flow channel, in the flow channel is gradually reduced from the air-inlet part to the air-outlet part, at least two flow guide plates are arranged in the flow channel, one end of each flow guide plate is located at the air-inlet part, the other end of each flow guide plate is located at the air-outlet part, and the flow channel is divided into a plurality of circulation spaces by the plane where the flow guide plates are located and the inner wall of the flow channel. According to the air flow channel assembly, the probability that negative ions move randomly in the flow channel, are combined with dust particles and are combined into large particles is reduced, the consumption of the negative ions in the flow channel is reduced, the content of the negative ions in air flowing out of the flow channel is increased, the flow guide plates are arranged, the effect of a reinforcing rib is achieved, and the stability of the flow channel structure is improved.

The invention discloses a mechanical seal cooling structure, and relates to the technical field of mechanical cooling. The structure comprises a shaft sleeve, a connecting seat and a throttling ring. The throttling ring is arranged in a hot water cavity between the shaft sleeve and the connecting seat, so that an overflowing gap is formed in the hot water cavity, the flowing space of the hot water cavity is reduced, firstly, the flowing volume of hot water is limited to achieve heat exchange and cooling of the hot water, and buffering cooling grooves distributed on the side of the throttling ring act; secondly, the hot water in the flowing gap can be buffered, the cooling time is prolonged, and the cooling effect is enhanced; and thirdly, when the throttling ring rotates, the buffering cooling grooves play a role in labyrinth sealing, that is, after the throttling ring rotates, the hot water passes through each buffering cooling groove when passing through, and the cooling time is further prolonged. The throttling ring for throttling is applied to a high-temperature hot water circulating pump, the throttling performance of the throttling ring is brought into full play, the effect of combining buffering and cooling is achieved, cooling is effective, and the problem that in the prior art, the cooling effect of the high-temperature hot water circulating pump is poor is solved.

The invention discloses a heat dissipation device for a notebook computer. The heat dissipation device is arranged in the notebook computer and is characterized by comprising a fan, a heat transfer pipeline and a heat conducting component, wherein the heat conducting component is in contact with a heating element in the notebook computer, the heat conducting component is arranged on the heat transfer pipeline, the heat transfer pipeline is connected with an air inlet end and an air outlet end of the notebook computer, and the fan connected with the heat transfer pipeline is arranged at the airinlet end.

The invention discloses fog gun equipment for large-area dust fall of a road. The fog gun equipment comprises a water treatment tank, a vacuum pump arranged on one side of the water treatment tank, a rotating disc, a fog gun barrel, human body infrared sensor seats and a distillation cavity, wherein the rotating disc is arranged above one side of the water treatment tank, a steering supporting seat is arranged at the lower end of the rotating disc, and a rotating seat is arranged above the steering supporting seat; the fog gun barrel is arranged above an angle adjusting telescopic rod and a supporting rod; the human body infrared sensor seats are symmetrically arranged at the two ends of one side of the fog gun barrel, and human body infrared sensors are arranged on the sides, which are away from the angle adjusting telescopic rod, of the human body infrared sensor seats; and the distillation cavity is formed in the water treatment box, a distilled water cavity is formed in one side of the distillation cavity, and a drainage pipe is arranged above the distillation cavity. According to the invention, tap water is purified, distilled water is extracted, air is not polluted, and the problem that aerial fog affects the body health of workers in engineering is effectively solved.