238 results about "Diffusion tube" patented technology

The invention relates to the technical field of liquid cooling, and discloses a flexible liquid cooling structure and a server, the flexible liquid cooling structure comprises a plurality of flexible substrates, a flexible connecting band is fixedly connected between two adjacent flexible substrates, the upper end surface of each flexible substrate is provided with a cooling groove, and the upper end surface of each flexible substrate is fixedly provided with a cover plate; the cooling groove and the cover plate form a cooling cavity; the jet flow assembly is arranged at the liquid inlet hole of the flexible liquid cooling structure, the flow speed of cooling liquid is effectively increased by utilizing the gradual shrinkage structures of the liquid inlet pipe part, the shrinkage pipe part and the diffusion pipe part of the jet flow assembly, when the cooling liquid passes through the shrinkage pipe part, the flow speed is obviously increased under the effect that the cross section of a channel is gradually reduced, and meanwhile, the cooling efficiency is improved. The air suction holes further guide air to be mixed into the cooling liquid through the negative pressure effect, a stronger jet flow effect is formed, the cooling liquid can rapidly flow through the whole cooling cavity, the problem of liquid retention caused by insufficient flow speed is effectively solved, and therefore uniform distribution of the cooling liquid is achieved.

The invention discloses a passivation method of a boron and phosphorus doped Poly layer, a passivation contact structure of the boron and phosphorus doped Poly layer and a battery. The passivation method comprises the following steps: firstly, growing a tunneling oxide layer with two thin and compact sides and a thick and loose middle on the surface of a silicon wafer by adopting a mode of combining low-temperature low-pressure oxidation, high-temperature normal-pressure oxidation and low-temperature normal-pressure oxidation, and then carrying out deposition and oxidation propulsion of boron atoms and / or phosphorus atoms by adopting a high-temperature diffusion tube, so that boron and phosphorus with a certain concentration are doped in a Poly silicon layer. According to the invention, through superposition of the oxide layers with different compactness, the overall thickness of the tunneling oxide layer is improved, so that the structure of the tunneling oxide layer is not obviously damaged in the subsequent boron and phosphorus diffusion process, and the passivation effect of the boron and phosphorus doped Poly layer is obviously improved. According to the passivation method disclosed by the invention, Poly silicon layers and doped polycrystalline silicon layers with different thicknesses can be obtained, and the passivation method can be applied to all batteries needing to use boron Poly and phosphorus Poly.

The invention discloses a pneumatic transmission type gas and dust joint removal device, and belongs to the technical field of mine underground safety equipment, the pneumatic transmission type gas and dust joint removal device comprises a shell, a gas and dust collection assembly, a gas decomposition assembly and a foam spraying assembly are arranged in the shell, and the gas and dust collection assembly comprises a first-stage throat pipe; the lower portion of the first-stage throat pipe is communicated with a first pressure ventilation pipe quick connector penetrating through the stainless steel shell, one side of the first-stage throat pipe is connected with a first-stage diffusion pipe, the upper portion of the first-stage diffusion pipe is communicated with a telescopic air suction arm, and the tail end of the telescopic air suction arm is communicated with a flexible rotating cover opening. According to the pneumatic transmission type gas and dust joint removal device, the telescopic air suction arm, the flexible rotary cover opening and the gas decomposition assembly are arranged, a dust source can be covered in all directions, gas and dust can be efficiently removed to prevent explosion, compressed air is adopted as a power source, spark generation can be avoided, and the device is convenient to use. The safety, reliability and applicability of underground use are improved, residues and waste liquid can be collected, and pollution to the working environment is avoided.

The invention discloses a water pump open-type impeller capable of inhibiting clearance cavitation and an open-type impeller pump, relates to the technical field of clearance cavitation inhibition of water pump impellers, and aims to solve the problem that a pump body vibrates due to the fact that blackspots and cracks appear on the surface of an existing water pump open-type impeller due to clearance cavitation, even the water pump open-type impeller falls off step by step in a spongy shape and generates noise. Comprising an impeller hub and blades, and the multiple blades are evenly arranged on the impeller hub in the circumferential direction. The side, directly facing the incoming flow of the water diversion pipe, of each blade is a water inlet edge, the side, corresponding to the downstream diffusion pipe, of each blade is a water outlet edge, the intersection point of each water inlet edge and the rim face is A, the intersection point of each water inlet edge and the hub face is B, and the impeller rim side wrap angle formed by the intersection point A and the vertical line and the longitudinal plane of the impeller hub axis is phi A, the impeller hub side wrap angle formed by the intersection point B and the vertical line and the longitudinal plane of the axis of the impeller hub is phi B, phi A is larger than phi B, and the difference value of phi A and phi B is 10-30 degrees.

The utility model discloses a venturi mixer which comprises a main body, a contraction cavity, a throat pipe and a diffusion pipe, the contraction cavity is arranged in the left end of the main body and forms a gas inlet cavity with the main body, the contraction cavity is a hollow cone, an air inlet is formed in the middle of the contraction cavity, and a plurality of small holes are uniformly distributed in the surface of the contraction cavity; the throat pipe is arranged in the middle of the main body, the throat pipe is connected with the right end of the shrinkage cavity, and a waste gas cavity is formed between the throat pipe and the main body; the diffusion pipe is arranged in the right end of the main body, an extension pipe expanding outwards is arranged at the left end of the diffusion pipe, and the extension pipe extends out of the right portion of the throat pipe to form an air channel with the throat pipe. The blade type mixer solves the problems that an existing blade type mixer has a mixing efficiency bottleneck, and when the existing blade type mixer is applied to a large-displacement engine, the mixing efficiency is low, the air inflow is insufficient, and the optimal value required by the engine cannot be achieved.

The invention relates to the technical field of lithium battery recovery, and discloses an explosion-proof crushing device for lithium battery recovery based on gas circulation, the explosion-proof crushing device comprises a crushing main body, a crushing device and an inert gas circulation conveying system, the crushing main body is provided with a feeding mechanism and a discharging mechanism, and the crushing device divides the crushing main body into two parts; the gas inlet end of the inert gas circulating conveying system communicates with the crushing body through a plurality of branch pipes, the gas outlet end of the inert gas circulating conveying system communicates with the recycling part of the crushing body through a pipeline, the branch pipes extending into the dissipation part are connected with diffusion pipes fixed to an inner cavity of the crushing body, and a gas outlet channel is formed in the top of the crushing body. According to the device, stability of the concentration in inert gas circulation is achieved through the inert gas circulation system and the gas outlet channel capable of automatically exhausting gas, and meanwhile, the inert gas circulation system can also be matched with the diffusion pipe to gather waste gas at a source at the gas outlet channel; and the exhaust gas discharging speed is increased.

An aeration system for a wastewater treatment tank, comprising a driving mechanism (1), which drives a downwardly-extending main shaft (2), wherein the main shaft (2) is divided into an upper section and a lower section, the upper section and the lower section respectively being provided with an upper spiral blade (31) and a lower spiral blade (32) which rotate in opposite clockwise directions; the outside of the main shaft (2) is further surrounded by a sleeve (4) coaxial with the main shaft (2), an upper spiral channel and a lower spiral channel respectively being formed between the inner wall of the sleeve (4) and the upper and lower spiral blades (31, 32); the sleeve (4) is fixed relative to a housing of the driving mechanism (1), and the upper end of the sleeve (4) is provided with an air inlet (40); the inside of the sleeve (4) is provided with a sealing plate (5) located between the upper and lower spiral blades (31, 32), the sealing plate (5) being provided with jet holes (50) in the axial direction of the main shaft (2); and below the sealing plate (5), the sleeve (4) is in lateral communication with two or more diffusion tubes (6), said diffusion tubes (6) being circumferentially uniformly distributed around the main shaft (2). The system can force air and wastewater to mix, and thus has a higher oxygen dissolution efficiency.

The embodiment of the invention provides a multifunctional wet-type dust removal device, and relates to the technical field of dust removal, the multifunctional wet-type dust removal device comprises a separator and a Venturi tube connected to a feed port of the separator, the Venturi tube sequentially comprises a shrinkage tube, a throat tube and a diffusion tube, the shrinkage tube is connected with a water inlet tube, the throat tube comprises an inner tube and connecting discs connected to the two ends of the inner tube, and the diffusion tube is connected with the inner tube. The connecting disc is detachably connected with the shrinkage pipe and the diffusion pipe, the inner pipe is made of elastic materials, a plurality of strip-shaped through holes are formed in the inner pipe, the throat pipe further comprises adjusting sliding blocks arranged at the positions of the strip-shaped through holes, the inner pipe is fixedly connected to the adjusting sliding blocks in a sealed mode, and the adjusting sliding blocks are connected with the connecting disc. The connecting disc is provided with a control mechanism which controls the adjusting sliding block to move in the radial direction of the inner pipe so as to control the inner diameter of the inner pipe. The Venturi tube has the effect that the size of the throat tube of the Venturi tube can be conveniently adjusted.

The invention discloses a continuous powder material spraying range-extending superfine grinding system, and belongs to the technical field of micro-nano-scale powder material grinding preparation. The powder material storage bin is connected with an outlet of the vacuum feeding machine; an outlet of the material storage bin is fixedly connected with a feeding rotary valve, a two-way micro-powder crusher and a double-helix feeding machine through flanges in sequence; the bidirectional micro powder crusher comprises a sleeve, an inner-layer crushing cylinder and an outer-layer crushing cylinder, wherein the inner-layer crushing cylinder and the outer-layer crushing cylinder are rotatably arranged in the sleeve; the high-speed airflow jet crusher comprises an incidence pipe, a jet nozzle, a mixing pipe, a throat pipe and a diffusion pipe which are sequentially connected, a mixing cavity is formed in the mixing pipe, an injection pipe is arranged on the mixing pipe, the diffusion pipe is provided with a diffusion cavity which is in a gradually-expanding shape, a pressurization connector is arranged on the diffusion pipe, and the diffusion pipe is a discharging port. And an injection port of the injection pipe is flexibly connected with an outlet of the double-helix feeding machine. According to the invention, millimeter-scale particle powder materials can be crushed to micro-nano scale in a bidirectional micro-powder crushing and high-speed airflow jet crushing manner.

A measurement device for a volute casing assembly is provided that takes into account the effects of circumferential asymmetry. [Solution] The system comprises a spiral passage (1), a diffuser pipe (2), an outlet extension (3) and a tongue (4) which are connected in series, and flow field measurement points (100, 200, 300) are spaced apart along the fluid flow direction within the spiral passage, the diffuser pipe and the outlet extension, and the diffuser pipe is connected to both the tongue and the outlet of the spiral passage, and the spacing between adjacent flow field measurement points in the region close to the tongue is smaller than the spacing between adjacent flow field measurement points in the region far from the tongue.

The invention relates to the technical field of gas-solid ejectors, in particular to an external through-flow gas-solid ejector which comprises a gas nozzle. The device further comprises a mixing chamber, a feeding channel, a throat pipe and a diffusion pipe. An inner cavity of the mixing chamber is designed to be of a diffusion-horizontal-convergence structure, materials can be conveyed out of the gas-solid ejector in time, a traditional nozzle built-in mode is improved, the gas nozzle and the mixing chamber are communicated to form an integral structure, and a sealing assembly is arranged on a flange plate, so that the mixing effect is improved. The contraction sealing piece can be rapidly expanded and contracted through adjustment of the control rod, the sealing performance is guaranteed, meanwhile, the problem that a conventional gasket is prone to being lost is effectively solved, a gas-solid injection and communication integrated structure is adopted in the device, ineffective space and a material retention area commonly existing in a traditional gas-solid injector are eliminated, and the service life of the gas-solid injector is prolonged. Not only is the performance of the gas-solid ejector optimized, but also the manufacturing cost and the use cost are remarkably reduced, and the reliability and the durability of equipment are improved.

The utility model belongs to the technical field of wallboard processing equipment, and particularly relates to a soot blower for a wallboard perforating machine, which comprises a workbench, a processing frame and a placing station for placing a wallboard are arranged on the top surface of the workbench, the wallboard is placed on the placing station, a second air cylinder drives a drilling cutter to perforate the wallboard, a first air cylinder pushes the second air cylinder, and the first air cylinder drives the second air cylinder to perforate the wallboard. A drilling cutter can drill a plurality of holes in a wallboard on the same straight line, after drilling is completed, a draught fan is driven, airflow generated by the draught fan sequentially passes through an air inlet pipe, a shrinkage pipe and a conveying pipe and is finally diffused through a diffusion pipe, dust on the wallboard is blown away by the airflow and blown into a material collecting box, and a fourth air cylinder can push a frame plate to drive a material blowing piece to move. A fourth air cylinder pushes a frame plate to do reciprocating motion once on a material cleaning frame, so that dust on the surface of the wallboard is better cleaned; compared with the prior art, the surface of a punched plate can be cleaned, and the punching quality can be improved.

The invention belongs to the technical field of wet dust removal devices, and particularly relates to a turbulence-enhanced efficient energy-saving wet dust removal device, and a Venturi condensation unit comprises a shrinkage pipe, an adjustable throat pipe and a diffusion pipe which are connected in sequence; the turbulent flow mixing and strengthening unit is connected between an outlet of the diffusion pipe and an inlet of the fiber grid condensation and filtration unit, and a static turbulent flow generator is arranged in the turbulent flow mixing and strengthening unit and used for enabling gas-liquid-solid multiphase flow from the Venturi condensation unit to generate rotation and turbulent flow; the fiber grid coagulation filtering unit comprises a shell and at least one layer of fiber grid plate arranged in the shell; the washing liquid circulation assembly comprises a liquid storage tank, a water pump and a first connecting pipeline and is used for conveying washing liquid in the liquid storage tank to the atomizing nozzles and the liquid distribution device. The system has the advantages of low-resistance operation, self-cleaning capability, intelligent adjustment and high system integration degree.

The invention discloses an adjustable lossless annular jet flow fish suction pump, which belongs to the technical field of fish suction equipment, and comprises a working water straight pipe, the outer wall of the working water straight pipe is communicated and connected with a working water inlet pipe, and one end of the working water straight pipe is connected with a conveying mechanism. The other end of the working water straight pipe is sequentially connected with a reducing pipe, a buffering assembly, a throat pipe and a diffusion pipe in a penetrating mode. The diameter of the end, close to the working water straight pipe, of the reducing pipe is larger than that of the other end. The size of the annular nozzle can be adjusted through the flow channel structure of the working water straight pipe, the reducing pipe, the buffer assembly, the throat pipe and the diffusion pipe in cooperation with the telescopic guide assembly. The guide assembly stretches and retracts inside to change the distance between the guide assembly and the inner wall of the reducing pipe, adjustment operation is easy and convenient, and then the width of the annular nozzle is adjusted; the nozzle is narrowed to increase the negative pressure and the conveying speed, and the efficient conveying requirement is met; and the nozzle is widened, so that the negative pressure is reduced to adapt to low-speed conveying of fragile live fish.

The application belongs to the technical field of jet pump equipment, and discloses a double-nozzle jet pump capable of improving pumping efficiency. The jet pump comprises a pump body, a sleeve pipe and a pump core. The pump body is provided with a working fluid channel, a transported fluid channel and the pump core. The sleeve pipe is sleeved on the pump body and forms a mixed fluid discharge channel with the sleeve pipe. The pump core comprises an inlet inner cavity connected with the working fluid channel, two nozzles symmetrically connected with the inlet inner cavity along the axial direction, a throat pipe arranged at intervals with the outlet of the nozzle, and a diffusion pipe connected with the outlet of the throat pipe. The diffusion pipe is connected with the mixed fluid discharge channel, and the transported fluid channel is connected with the nozzle. The working fluid enters the inlet inner cavity through the working fluid channel and enters the two nozzles at the same time. A low-pressure area is formed at the outlet of the nozzle, so that the transported fluid is sucked into the nozzle through the transported fluid channel, and then the working fluid and the transported fluid are mixed to form high-speed mixed fluid in the throat pipe. The high-speed mixed fluid is pressurized through the diffusion pipe and discharged through the mixed fluid discharge channel.

The utility model discloses a guideboard support and relates to the technical field of guideboards. The device comprises a base, a first square tube and a second square tube, the first square tube is detachably installed on the base, and the second square tube is arranged on the inner wall of the first square tube in a sliding mode. According to the utility model, the light-emitting components are arranged in the first square tube and the second square tube and are matched with the first square tube and the second square tube which are made of PC light diffusion tubes, so that the guideboard bracket is bright, colorful and dazzling in light, the display effect at night is improved, meanwhile, a charge pal or a mobile power supply can be directly used, and convenience is brought to outdoors, shopping malls and places without electricity; both can be used; by arranging the dismounting assembly, the first square tube can be conveniently fixed to the base or dismounted from the base, so that carrying is convenient, by arranging the adjusting assembly, the height of the second square tube can be freely adjusted, overall height adjustment of the guideboard support is achieved, and the flexibility of the guideboard support is improved.

The utility model provides a multi-nozzle ejector, which belongs to the technical field of ejectors and comprises an ejector main body, a low-pressure fluid pipeline is embedded into the side wall of the ejector main body, a high-pressure fluid pipeline is embedded into an inlet of the ejector main body, a nozzle is arranged at the outlet end of the high-pressure fluid pipeline, and a nozzle is arranged at the outlet end of the nozzle. A nozzle assembly used for adjusting fluid pressure is arranged at a nozzle opening of the spray head, a nozzle opening of the nozzle assembly faces the mixing chamber of the ejector body, and finally mixed fluid with the pressure higher than that of the low-pressure suction fluid but lower than that of the high-pressure movement fluid is discharged through the spray head, so that the mixed fluid enters the mixing pipe through the mixing chamber. The fluid is injected from the mixing pipe to the outside through the diffusion pipe, in the process of injecting the mixed fluid, the size of the injected fluid is adjusted through the nozzles of different specifications located on the spray head, adjustment is conducted according to the application environment, and therefore the fluid injection device can be suitable for fluid injection under different conditions, and the situation that the fluid is too large or too small, and the application process is affected is avoided.

The utility model relates to the field of sludge treatment equipment, in particular to a sludge spraying device. The sludge spraying device comprises a mounting cylinder; the diffusion pipe is connected with a pushing air cylinder; a sealing soft cover is arranged at the joint of the mixing pipe and the sludge injection pipe; the angle adjusting structure comprises a mounting frame mounted on the mixing pipe, a guide seat mounted on the sludge injection pipe, an adjusting seat in sliding connection with the guide seat, and a screw rod for driving the adjusting seat to move; the mounting frame and the sludge injection pipe are in hinged matched connection, and the adjusting seat is configured to slide in the direction of the lead screw and lift or pull down the sludge injection pipe. According to the sludge jet device, the length of the diffusion pipe extending into the mixing pipe is adjusted by the pushing cylinder, and the inclination angle of the sludge jet pipe is adjusted by the angle adjusting structure, so that a better mixing effect of compressed air and sludge is achieved under different working conditions.

The application discloses a concentration monitoring device for an aerosol deposition process, and relates to the technical field of aerosol detection.The concentration monitoring device comprises a casing and a speed regulation mechanism, the speed regulation mechanism comprises an aerosol inlet pipe and an aerosol outlet pipe, the aerosol outlet pipe is arranged above the aerosol inlet pipe, the axis of the aerosol inlet pipe and the aerosol outlet pipe are collinear, the cross-sectional radius of the inlet end of the aerosol outlet pipe is larger than the cross-sectional radius of the outlet end of the aerosol inlet pipe, a test area is arranged between the aerosol inlet pipe and the aerosol outlet pipe, the aerosol inlet pipe comprises a first diffusion pipe, the cross-sectional radius of the first diffusion pipe increases from bottom to top, the aerosol outlet pipe comprises a second contraction pipe, the cross-sectional radius of the second contraction pipe decreases from bottom to top, the inlet end of the aerosol inlet pipe penetrates through the bottom of the casing, and the outlet end of the aerosol outlet pipe penetrates through the upper end of the casing.The special structural design of the aerosol inlet pipe and the aerosol outlet pipe is used to realize accurate regulation of the flow speed of aerosol by arranging the speed regulation mechanism.

The utility model relates to a negative pressure mud discharge device, including a main drainage-aiding liquid pipeline and a plurality of mud discharge components, wherein the plurality of mud discharge components are connected to the main drainage-aiding liquid pipeline; the mud discharge components include a branch drainage-aiding liquid pipeline, a nozzle, a mixing tube, a diffusion tube, a mud guide pipe and a mud suction plate; the nozzle diameter is smaller than the branch drainage-aiding liquid pipeline diameter; the mud guide pipe includes a first tube body and a second tube body, one end of the first tube body is connected to the nozzle, one end of the second tube body is connected to the mud suction plate, and the other end of the first tube body and the other end of the second tube body are connected by a flange. The mud guide pipe includes a first tube body and a second tube body connected by a flange, which is convenient for connection and disassembly between the first tube body and the second tube body, is conducive to cleaning and replacement of the mud guide pipe, reduces the retention of sludge in the mud guide pipe, ensures the mud guide efficiency of the mud guide pipe, and is also convenient for selecting second tube bodies of different lengths according to actual needs to adapt to the mud discharge of sludge at different positions and improve the sludge discharge efficiency.

The utility model discloses an adjustable microorganism diffusion pretreatment device which comprises a box body, one side of the box body is inserted with a connecting pipe, the other end of the connecting pipe is sleeved with a fixed pipe, the top end of the fixed pipe is fixedly connected with a connecting plate, the top of the connecting plate is rotatably inserted with a threaded rod, and the outer wall of the threaded rod is in threaded connection with a sliding block. The bottom end of the sliding block is fixedly connected with two sliding rods, the bottom ends of the two sliding rods are provided with a composite pipe assembly, the composite pipe assembly slides in the fixed pipe, and the composite pipe assembly comprises a plurality of diffusion pipes. The threaded rod is screwed to enable the sliding block to move, so that the sliding rod and the diffusion pipe are driven to move, the area, exposed out of the fixed pipe, of the diffusion hole of the diffusion pipe is adjusted, meanwhile, the position of the sealing piston in the diffusion pipe is adjusted, and therefore the flowing-out speed of microbial strains is adjusted; therefore, the diffusion density can be adjusted according to different types of microbial strains, and the diffusion effect of microorganisms is improved.

The invention relates to a humidity control method and a fresh air conditioning system, and belongs to the technical field of air conditioning, the fresh air conditioning system comprises a shell, a multi-stage drying decompression device and a steam diffusion pipe, and the left end and the right end of the shell are provided with a steam inlet and a steam outlet respectively; the multi-stage drying and pressure reducing device is detachably arranged in the shell and used for receiving wet steam at the steam inlet, the multi-stage drying and pressure reducing device converts the wet steam into dry steam through the multi-stage throttling expansion effect of the multi-stage drying and pressure reducing device, and the dry steam is discharged through the steam outlet; the steam diffusion pipe is connected to a steam outlet of the shell and is used for diffusing the dry steam; the multi-stage drying and pressure reducing device has the beneficial effects that multi-stage pressure reducing and drying are carried out through the multi-stage drying and pressure reducing device, atmospheric pressure and dried steam are discharged from the steam outlet, and the air humidity in the environment can be well maintained.

An exhaust device, a mounting method thereof and a turbofracturing device. The exhaust device comprises a body, a fixing plate, a pressing plate and a diffusion pipe. The body comprises a side wall. The fixing plate is configured to be fixed to the side wall. The pressing plate is configured to be pre-fixedly connected with the fixing plate and fixedly connected. The diffusion pipe is configured to be fixed to the side wall through the pressing plate and the fixing plate. The fixing plate further comprises a first pre-installation part. The pressing plate further comprises a second pre-installation part. The second pre-installation part is cooperable with the first pre-installation part to realize pre-fixing of the diffusion pipe. In the assembly process of the diffusion pipe, the second pre-installation part and the first pre-installation part are cooperable to realize pre-fixing of the diffusion pipe, and then the diffusion pipe is fixed. Therefore, accurate connection of the diffusion pipe is realized, the assembly process is simplified and manpower is saved.

The invention relates to an asymmetric negative pressure quantitative adding foam generating device which comprises a high-pressure air inlet main pipe connected with an air pipe under a mine, a high-pressure water inlet main pipe connected with a sewer pipe of the mine, and a quantitative adding device connected with the high-pressure water inlet main pipe. The quantitative adding device comprises a shrinkage pipe, a throat pipe and a diffusion pipe, the length of the diffusion pipe is larger than that of the shrinkage pipe, the center line of the throat pipe deviates, the cross section of the throat pipe is in a special shape, a liquid outlet of the liquid storage tank is connected with the bottom of the throat pipe through a liquid suction pipe, and the liquid suction pipe is obliquely inserted in the tangential direction of the inner wall of the throat pipe opposite to the water flow direction of the throat pipe. A foam inlet of the distributor corresponds to a plurality of foam outlets; and each of the plurality of foam outlets of the distributor is connected with the spray head through a foam conveying pipeline. And gas-liquid mixing can be enhanced.

This application provides a quarrying device with the function of extracting bottom sediment without drilling, including a drill rod, a drill bit, and a sediment removal device. The sediment removal device includes, in sequence: a retrieval tool for retrieving and deploying the sediment removal device; a water pipe, which is a cylindrical structure open at both ends with a through-hole on the side; a nozzle, which is a cylindrical structure open at both ends; a nozzle seat, which is an annular structure with internal threads; a nozzle with a conical inner wall; a diffuser, which is a cylindrical structure open at both ends with a through-hole on the side wall; an inner tube, which is a hollow cylindrical shape open at both ends; a retaining spring, fixed to the head end inside the inner tube; a retaining spring seat, fixed to the head end inside the inner tube, with the tail end fixedly connected to the head end of the retaining spring; an annular seat ring, fixed to the inner wall of the drill rod; and an annular sealing ring, fixed to the outside of the sediment removal device, located on one side of the tail end of the through-hole. The advantage of this application is that it can remove rock sediment from the bottom of the hole, solving the problem of residual rock sediment.

The SF6 decomposed gas diffusion device comprises a decomposed gas cylinder and an upper computer, an outlet of the decomposed gas cylinder is fixedly communicated with a first pressure reducing valve, the first pressure reducing valve is fixedly communicated with a first electromagnetic valve, the first electromagnetic valve is fixedly communicated with a first controller, and the first controller is communicated with a fourth electromagnetic valve in series; an outlet of the fourth electromagnetic valve is fixedly communicated with an inlet of a gas chamber, an outlet of the gas chamber is fixedly communicated with a fifth electromagnetic valve, an outlet of the fifth electromagnetic valve is fixedly communicated with a third controller, an outlet of the third controller is fixedly communicated with a sixth electromagnetic valve, and an outlet of the sixth electromagnetic valve is fixedly communicated with a mixed gas injection port of a diffusion pipe. According to the device, the SO2 equilibrium concentration A, the instantaneous concentration C when the diffusion time is t and the SO2 sampling port distance x are measured through a plurality of measurement sampling ports when a GIL fault occurs, a diffusion time and displacement fitting formula of SO2 in the GIL in SF6 is obtained, and a GIL fault source is effectively and accurately traced and positioned through the fitting formula.

The invention relates to a post-intermediate-frequency thermal diffusion structure abnormity identification method, a sampling auxiliary device and a sampling method.The sampling auxiliary device comprises an MF front branching comb arranged at the front end of intermediate-frequency thermal diffusion equipment, and copper pipes arranged in the direction of a steel wire are arranged in a plurality of through holes in the MF front branching comb; the steel wire penetrates through a through hole in the MF front branching comb or the copper pipe and then enters the medium-frequency heat diffusion pipe; the copper pipe can be pushed into or drawn out of the medium-frequency heat diffusion pipe according to requirements; the sampling method comprises the step of sampling by adopting the sampling auxiliary device. The identification method comprises the following steps: arranging a plurality of positions on an alloy production line to carry out strength loss detection, respectively taking a plurality of samples for strength detection at each position through medium-frequency thermal diffusion and shielding medium-frequency thermal diffusion, and respectively marking the samples as a and a shielding, and calculating the strength loss of the position a before and after thermal diffusion and the strength loss of the production line after thermal diffusion. The sampling auxiliary device has the advantages of being low in manufacturing cost and convenient to disassemble and maintain; the sampling method has the advantages of simple operation and effective result.

The utility model provides a cooling section of a meteorological loop wind tunnel, which comprises a cooling cavity positioned in the loop wind tunnel, a water injection port arranged at the bottom of the cooling cavity, a water outlet arranged at the top of the cooling cavity and used for continuously adding cooling liquid; the multiple cooling pipes are evenly distributed in the cooling cavity, the two ends of each cooling pipe penetrate out of the side wall of the cooling cavity, one end of each cooling pipe faces the air inlet side of the cooling cavity, and the other end of each cooling pipe faces the air outlet side of the cooling cavity; the cooling pipe is formed by sequentially communicating multiple special-shaped pipelines, each special-shaped pipeline comprises a diffusion pipe and a contraction pipe, the diameter of each special-shaped pipeline is smaller than that of the diffusion pipe, the special-shaped pipelines are connected to the tail of the diffusion pipe, and the diffusion pipe is in smooth transition connection with the contraction pipe. According to the technical characteristics, the diameter of the pipe body is repeatedly changed through the diffusion pipe and the shrinkage pipe, so that the flowing speed of the air body is changed, the air body collides with the inner wall of the cooling pipe in a reciprocating mode, the contact frequency is improved, the heat exchange efficiency of the air body is also improved, and the heat dissipation efficiency of the air body is greatly improved.

A built-in diffusion combustion device and method for a fire tube type oil field heating furnace belongs to the technical field of fire tube type oil field heating furnace. The device and method include two fuel staging and three air staging. In the combustion stage of the fire tube, the primary fuel and the primary air burn in the primary combustion chamber. The secondary combustion transports the fuel to the depth of the fire tube through the diffusion tube, and after mixing with the secondary air and the tertiary air that complement each other, it slowly diffuses and burns in the direction away from the wall of the fire tube. The present invention lengthens the fuel combustion flame and reduces the combustion intensity, which can effectively reduce the concentrated thermal stress caused by the local high temperature of the fire tube and avoid the problem of equipment burning caused by high temperature. The process structure is simple and the diffusion combustion device is easy to replace and maintain. Compared with the traditional fire tube type oil field heating furnace combustion device, it reduces the combustion consumption and operating costs, and ensures the efficient and long-term operation of the fire tube type oil field heating furnace.

The invention provides an aeration method based on an efficient submersible jet aerator, which comprises the following steps: step 10, a water pump operates, and generated fluid flows into a first nozzle; step 20, the fluid flows in the first nozzle, the speed is gradually increased, most of the fluid is sprayed into the mixing chamber through an outlet of the first nozzle, and a small part of the fluid is sprayed into the mixing chamber through the first aeration hole group; negative pressure is formed in the mixing chamber, and air above the liquid level is sucked into the mixing chamber through the air inlet pipe and is mixed with the fluid to form steam-water mixed liquid; 30, the steam-water mixed liquid in the mixing chamber flows into a second nozzle; 40, the steam-water mixed liquid flows in a second nozzle, the speed is gradually increased, and the steam-water mixed liquid is sprayed into a throat pipe through an outlet of the second nozzle; and step 50, enabling the steam-water mixed liquid in the throat pipe to flow into a water body through a diffusion pipe, and carrying out an oxygen transfer process. According to the aeration method based on the efficient submersible jet aerator, the amount of aeration entering the mixing chamber can be increased, and the oxygen dissolving efficiency is improved.