799 results about "Orifice plate" patented technology

The invention provides a soil permeability test device suitable for gradient variable-temperature freeze-thaw cycle test, which comprises a temperature control cylinder formed by axially extending and combining a plurality of annular insulating cylinders with hollow structures, an insulating and heat-conducting soil sample cylinder is mounted in a central chamber formed by the temperature control cylinder, a water storage chamber is arranged on one side of the soil sample cylinder, and a water outlet is formed in the other side of the soil sample cylinder. A porous anode plate is arranged between the water storage chamber and the soil sample cylinder, a water collecting chamber is arranged on the other side of the soil sample cylinder, a porous cathode plate is arranged between the water collecting chamber and the soil sample cylinder, an orifice plate flowmeter is arranged between the water collecting chamber and the porous cathode plate, and the water storage chamber is connected with a water supply system; a pore pressure sensor and a temperature sensor are installed on the side wall of each annular insulating cylinder, and each annular insulating cylinder is connected with a refrigeration module and a heating module. The device can simulate a real environment to perform freezing and thawing and gradient temperature control on the sample, can effectively simulate a real geological environment in an alpine region, and provides a scientific basis for research on permeability of frozen soil under a gradient freezing and thawing cycle condition.

The utility model provides a two-stage jet flow reflection mixing flow guide distributor, a heat exchange device and refrigeration equipment. The two-stage jet flow reflection mixing flow guide distributor comprises a cavity, a liquid inlet pipe, a two-stage jet flow reflection mixing component and a plurality of branch pipes. The two-stage jet flow reflection mixing component comprises a first-stage reflection mixing plate, a second-stage jet flow hole plate and a second-stage reflection mixing plate which are sequentially distributed in the cavity at intervals in the flowing direction of the refrigerant. The first-stage reflecting and mixing plate is distributed opposite to the inflow end of the cavity so as to reflect and mix a refrigerant injected into the cavity from the liquid inlet pipe, and a plurality of overflowing holes are formed in the first-stage reflecting and mixing plate. The second-stage jet flow hole plate and the first-stage reflection mixing plate define a jet flow cavity, and a second-stage jet flow hole is formed in the jet flow cavity. The second-stage reflection mixing plate is opposite to the second-stage jet flow holes and is provided with a plurality of flow guide holes of which the number is the same as that of the shunting branch pipe holes; and each flow guide hole is basically coaxial with the corresponding shunting branch pipe hole. And the plurality of branch pipes are respectively welded and connected in the plurality of shunting branch pipe holes in the outflow end of the cavity.

The invention provides a turbine guider testing device comprising a main gas supply module used for adjusting and measuring main gas flow; the combustion heating module is connected to the downstream of the main gas supply module and comprises a combustion chamber and a throttling device arranged at an outlet of the combustion chamber; the flow field setting module is connected to the downstream of the combustion heating module and is used for carrying out flow field homogenization treatment on the high-temperature fuel gas; the guider test module comprises a guider test piece connected to the downstream of the flow field setting module and is used for installing a turbine guider to be tested; the cold air adjusting module comprises a cold air pipeline, a cold air inlet valve group, a cold air distribution tank, a multi-path cold air flow adjusting valve and a multi-path cold air flow orifice plate, the cold air distribution tank divides cold air into a plurality of independent channels, and the cold air flow is dynamically adjusted through the flow adjusting valve and the flow orifice plate of each channel; and the fuel oil control module is connected with the combustion chamber and comprises an oil supply pipeline, a main and auxiliary oil way fuel oil flow meter, a main and auxiliary oil way oil supply regulating valve and a proportional reversing valve.

The invention provides an air source heat pump system. The air source heat pump system comprises a compressor, a fin heat exchanger, a shell tube heat exchanger and a gas-liquid separator, wherein the shell tube heat exchanger comprises a gas tube, a liquid tube, a heat exchange tube and a liquid separating device, the air source heat pump system further comprises a four-way valve, the four-way valve is correspondingly communication with the compressor, the gas-liquid separator, the fin heat exchanger and the gas pipe, the fin heat exchanger is in communication with the liquid separating device through a orifice plate and a first one-way valve; the fin heat exchanger is in communication with the liquid tube through an expansion valve and a second one-way valve; the first one-way valve is used for the one-way conduction of the fin heat exchanger to the liquid separating device; the second one-way valve is used for the one-way conduction of the liquid pipe to the fin heat exchanger. By the adoption of the system, a liquid storage device of the liquid refrigerant does not need to be added in the system, so that the cost is saved; a large amount of liquid refrigerant cannot flow back to the compressor after defrosting is finished; during the refrigeration mode, the refrigerant running shell pass does not need to be subjected to suction superheat, so that the air suction pressure and the operation efficiency of the refrigeration mode are improved; and the overall use valve of the system is less, and the reliability is high.

The invention relates to the technical field of flow meters, and provides an orifice plate flow meter and an application method thereof.The orifice plate flow meter comprises a rear end pipe, an orifice plate and a front end pipe, the rear end pipe comprises a rear pipe body, a positioning ring and an inner turned edge, and the positioning ring is fixedly arranged in the rear pipe body; the inner curled edge is arranged in the rear pipe body, and one end of the inner curled edge and one end of the rear pipe body are integrally formed and continuously arranged; the hole plate is fixed between the positioning ring and the inner turned edge in an abutting mode. The front end pipe and the rear pipe body are coaxially arranged, and one end of the front end pipe is welded and fixed to the outer side of the inner curled edge. According to the orifice plate flow meter, the rear end pipe comprises the rear pipe body, the positioning ring and the inner turned edge, the orifice plate and the rear end pipe can be fixed firstly, then the rear pipe body and the front end pipe are connected, the orifice plate flow meter can be assembled conveniently, the mounting precision of the orifice plate can be guaranteed, and therefore the detection precision of the orifice plate flow meter is improved.

The invention relates to the technical field of compressors, in particular to a series-connection automobile towing compressor system and an automatic surge control method. The series-connection automobile towing compressor system comprises a plurality of stages of automobile towing compressors, a plurality of temperature reduction devices, a bypass return valve, a plurality of temperature reduction adjusting valves and a plurality of orifice plate flowmeters. The problems that in the prior art, cost is high, energy consumption is large and the control effect is not ideal are effectively solved, the multiple stages of automobile dragging compressors are arranged in series and matched with the temperature reducing device and the bypass backflow valve, effective circulation and temperature control of media are achieved, cost of independently using a surge backflow valve in the prior art is reduced, and meanwhile the control effect is good. Through the arrangement of the vortex shedding flowmeter, the pressure sensor, the temperature sensor and the rotating speed sensor, the inlet flow, pressure, temperature and rotating speed of each stage of compressor are accurately measured, in combination with theoretical surge pressure ratio calculation, the surge risk is pre-judged in advance and automatically controlled, and energy consumption increase caused by premature intervention of a bypass return valve at the low rotating speed is avoided.

The utility model discloses an on-line blowback device for an orifice plate flowmeter. The on-line blowback device comprises a flowmeter main body, connecting pipes are installed at the two ends of the flow meter body, a back flushing mechanism is installed at the bottom of the connecting pipe at one end of the flow meter body, a treatment box is installed at the bottom of the connecting pipe at the other end of the flow meter body, a filter screen is installed in the treatment box, and a treatment mechanism is installed on the side, close to the filter screen, in the treatment box. The treatment mechanism comprises a connecting pipe, a control valve, an air inducing pipe and a blowing pipe, and the connecting pipe is mounted on one side of the reverse blowing mechanism; according to the utility model, the connecting pipe, the control valve, the air inducing pipe and the blowdown pipe are matched for use, and the control valve on the outer side of the connecting pipe is opened, so that the blowback mechanism conveys air into the air inducing pipe through the connecting pipe, and when air is blown out from the inside of the blowdown pipe, impurities separated and adhered on the filter screen can be directly blown down and then discharged; therefore, later treatment by personnel is not needed, and use by the personnel is facilitated.

Variable Orifice Plate technology represents new physics for measuring fluids accurately over a dynamic range and obsoletes fixed orifice plates. Therefore, a new balancing procedure using an updated correction factor is needed to mitigate and calibrate for field systems effects. Architectures are provided that can leverage correction factor values (CFVs) that are determined from a third party device such as a TAB contractor in order to determine other CFVs for a fluid flow with a variable aperture. The fluid flow device can change state, which changes the area of the variable aperture and, accordingly, the fluid flow profile. Multiple CFVs can be determined from TAB measurements taken while the fluid flow device is in respective different states, while other CFVs for different states can be determined as a function of the known CFVs and associated states or other suitable data such as damper position, aperture area, or the like.

The invention relates to the technical field of flow measurement, in particular to an integrated differential pressure type orifice plate flowmeter which comprises a differential pressure transmitter, a filtering structure, a driving structure, a mounting structure, a fixing structure, a dismounting structure, a three-valve set, a pressure guide pipe and a mounting pipe. The arrangement of the filtering structure is convenient for intercepting and filtering a medium in the fluid channel, impurities can be prevented from entering a subsequent detection assembly to influence the detection effect, interference on flow detection is prevented, the driving structure is convenient for driving the guide block to drive the filter screen to reciprocate, and the relative position of the filter screen and the impurities is continuously changed. A first screw rod in the mounting structure drives a connecting ring to drive a plurality of abutting blocks to abut against a pipeline flange plate at the same time, so that particle impurities are not prone to adhering to the surface of a filter screen, the blocking risk is reduced, it is ensured that fluid smoothly passes through the filter screen, and a hole plate can be rapidly replaced without disassembling a plurality of components through drawing and inserting type mounting in the mounting structure, and the replacement efficiency is improved. And the installation efficiency of the flowmeter installation pipe is improved.

The utility model belongs to the technical field of flow meters, and provides an orifice plate flow meter which comprises a first pipeline, a second pipeline, a connecting seat, an orifice plate, a sealing ring and a driving mechanism. The first pipeline and the second pipeline are oppositely arranged, the lower end of the first pipeline and the lower end of the second pipeline are fixedly connected together through the connecting seat, and the pore plate is arranged between the first pipeline and the second pipeline; one end of the sealing ring is arranged on the first pipeline in a sleeving mode, the sealing ring and the first pipeline are kept sealed, and the driving mechanism is used for driving the sealing ring so that the sealing ring can tightly press the pore plate, and therefore the two ends of the pore plate can be kept sealed with the sealing ring and the second pipeline correspondingly. According to the utility model, the sealing ring can be far away from the pore plate for a certain distance, so that the pore plate can be directly taken down from the connecting seat, the pore plate can be quickly replaced, and the convenience is improved.

The invention relates to a spraying system detection method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring an equiaxed diagram of a spraying system in a nuclear power plant; according to the equiaxed diagram, the target orifice plate flow passing through a throttling orifice plate in the circulation pipeline is determined; under the condition that the target orifice plate flow belongs to the standard flow interval, a spraying pump is controlled to be started, and the pipeline flow in a circulating pipeline is detected; and when it is detected that the pipeline flow in the circulation pipeline is the preset flow, all the isolation valves are controlled to be opened in sequence, and the opening time of the isolation valves and the reliability of the circulation pipeline are detected. By adopting the method, the reliability detection of the spraying system can be simply, efficiently and comprehensively completed.

To provide a hydrogen gas leakage detection device and a leakage detection method that can easily detect hydrogen gas leakage from flanges of piping in an orifice assembly by using an orifice as a flowmeter capable of measuring a hydrogen gas flow rate under a high-pressure environment.SOLUTION: A hydrogen gas leakage detection device includes a first flange 302 in upstream-side piping of hydrogen gas piping with a predetermined diameter and a second flange 303 in downstream-side piping. An orifice plate 304 is clamped between the opposing first flange 302 and second flange 303. The device includes an orifice flowmeter unit 30 that measures a gas flow rate by measuring gas pressure on the upstream side and downstream side of the orifice plate 304. The device includes a leak port 307 that guides hydrogen gas leaking from between the first flange 302 and the second flange 303 to the outside. The device includes a hydrogen gas sensor 310 that detects the hydrogen gas guided from the leak port 307.SELECTED DRAWING: Figure 3

The present invention relates to a vaporizing device for a semiconductor process, comprising: a first atomizing unit for first atomizing a liquid source by using ultrasonic waves to vibrate the liquid source; a second atomization unit connected to the first atomization unit and configured to discharge the primarily atomized particles flowing in from the first atomization unit to a discharge port (orifice plate) at a carrier gas pressure to secondarily atomize the particles; and a vaporizing part which is connected to the second atomizing part and through which the secondary atomized particles flowing in from the second atomizing part pass and vaporize. Therefore, the atomization efficiency and the vaporization efficiency can be improved, the usage amount of liquid sources is reduced, and high-flow treatment is carried out.

The invention discloses a throttling orifice plate online deslagging and cleaning device based on bypass switching, and relates to the technical field of throttling orifice plate online cleaning, the throttling orifice plate online deslagging and cleaning device specifically comprises a medium pipeline and a bypass pipeline, the two sides of the medium pipeline communicate with the bypass pipeline, and a throttling plate assembly is installed on the medium pipeline; according to the invention, intelligent differential pressure monitoring and automatic control are carried out on the circulation of the throttling orifice pipeline, the differential pressure monitoring unit is used for detecting the pressure change of the fluid on the upstream side of the throttling orifice in real time, and the decision displacement unit in the controller is used for automatically judging the blockage degree and driving the hydraulic mechanism to work to complete bypass switching; by means of the design, full-process automation from detection to cleaning is achieved, the requirement for manual intervention is lowered, the cleaning efficiency and accuracy are improved, meanwhile, manual operation errors are reduced, and production safety, energy conservation and consumption reduction are further guaranteed.

A cap assembly, a battery, and a battery pack. The cap assembly includes an explosion-proof sheet including a main body and a protrusion provided on a first surface of the main body; an orifice plate including a first portion and a second portion that are connected, at least one first pressure relief hole being disposed between the first portion and the second portion, the first portion being disposed closer to a center of the orifice plate relative to the second portion; an insulating gasket disposed between the explosion-proof sheet and the orifice plate, where the insulating gasket being configured to cover at least a portion of the first portion.

The invention discloses a rocket attitude control method and related equipment, and relates to the technical field of attitude control, and the method comprises the steps: obtaining a rolling attitude angle of a rocket; generating a control instruction according to the deviation between the rolling attitude angle and the target attitude angle; and on the basis of the control instruction, electromagnetic valves of at least one pair of symmetrically-arranged cold air spray pipes are controlled to be opened and closed so that high-pressure gas can be released to generate thrust, the posture is adjusted to the target posture angle, the high-pressure gas is supplied through a pressure reducing valve, and a buffering electromagnetic valve and a buffering hole plate are arranged in front of the pressure reducing valve so that the pressure rise rate in front of the pressure reducing valve can be controlled not to exceed a preset threshold value. The combined structure of the buffer electromagnetic valve and the buffer pore plate is arranged in front of the pressure reducing valve, the pressure rise rate of high-pressure gas is dynamically adjusted, it is ensured that the pressure change of an inlet of the pressure reducing valve is always lower than the preset threshold value, and the pressure impact problem caused by rapid opening and closing of the electromagnetic valve is effectively restrained.

The present invention discloses a direct vibration fluidized bed, which relates to the technical field of fluidized beds and includes a mounting base. The top of the mounting base is provided with a fluidized bed main body through a plurality of vibration springs, and a vibration motor is installed on the side of the fluidized bed main body. In the present invention, when the vibration motor is started, the material moves from the upper orifice plate and the lower orifice plate towards the discharge hole. Then, the air inlet is connected to the hot gas inlet, and the air outlet is connected to the exhaust pipe, so that drying can be carried out during the material transportation process. By starting the leveling mechanism, the stirring mechanism is driven to stir the material about to leave the upper orifice plate, improving the drying effect. The thickness uniformity of the stirred material is different. After leaving the upper orifice plate, it falls onto the lower orifice plate, and the leveling mechanism flattens the material with different thickness uniformities, so that the material moves on the vertical plate with the same thickness, and the thickness of the material can be controlled.

The utility model relates to the technical field of coke oven heating, in particular to a coke oven gas heating combustion chamber temperature control device, which is characterized in that a gas header pipe adjusting unit is arranged at the front end of a single-hole combustion chamber adjusting unit and is connected with a coke oven gas main pipe, and each single-hole combustion chamber adjusting unit is connected with the coke oven gas main pipe; the output end of each single-hole combustion chamber adjusting unit is connected with the corresponding combustion chamber. And the gas main pipe adjusting unit comprises an adjusting valve C, a flow meter and a pressure transmitter, and the adjusting valve C, the flow meter and the pressure transmitter are sequentially arranged on the coke oven gas main pipe. The utility model has the advantages that: the regulating valve and the bypass regulating valve can completely replace the function of a pore plate box, so that the risk that a worker works in a dangerous area such as a gas basement is reduced; the loop A of the first adjusting branch pipe and the loop B of the second adjusting branch pipe are standby for each other, when one loop breaks down, the loop can be switched to the standby loop at any time, and the flow stability of heating gas is improved.

A plug-in orifice plate flowmeter is characterized by comprising an orifice plate flowmeter body, a connecting plate is fixedly arranged on the orifice plate flowmeter body, a fixing hole is formed in the connecting plate, a fixing rod is arranged in the fixing hole, and a wedge block is arranged on the fixing rod; a second pipeline is aligned with a connecting plate of an orifice plate flowmeter body, a first pipeline is attached to the orifice plate flowmeter body, the first pipeline is rotated, a fixing rod is connected and fastened with the first pipeline, then three limiting blocks of an adjusting plate are placed in sliding grooves, the limiting blocks abut against the fixing rod, and the position of the fixing rod is kept still; the adjusting plate is connected with the first pipeline through the lock catch, the orifice plate flowmeter body is connected with the pipelines, the two pipelines can be fixed to the orifice plate flowmeter body only by installing the nut on the pipeline at one end without locking and inserting and rotating the other pipeline, operation is convenient, and working efficiency is improved.

The invention discloses a low-temperature upper-stage power system, and relates to the field of spaceflight. Comprising a gas cylinder, a pressure supplementing electromagnetic valve, a pressure supplementing pore plate, a self-generation pressurizing electromagnetic valve, a self-generation pressurizing pore plate, a storage tank, an overflow valve, a storage tank pressure sensor, a pressure stabilizing valve, a circulating pump, a circulating control valve, a pump front valve, a Joule-Thomson throttling expansion valve, a heat exchanger and a branch supply control valve; the main engine subsystem comprises a pump, a turbine, an auxiliary valve, a fuel gas generator, a main valve, a precooling backflow valve, a main thrust chamber, an evaporator, a starting gas cylinder, a starting gas cylinder control valve, a main thrust chamber igniter and a fuel gas generator igniter. The attitude control engine subsystem comprises a plurality of attitude control engines; each attitude control engine comprises an attitude control thrust chamber, and an oxidant control valve, a fuel control valve and an attitude control thrust chamber igniter are arranged on each attitude control thrust chamber. Propellant supply of the main engine and the attitude control engine is achieved through the unified pressurization conveying system.

The invention relates to the technical field of wafer cutting, in particular to a wafer carrying table with a wafer flatness detection function and a wafer fixing method, and the wafer carrying table comprises a bottom plate, a driving device, a flatness detection device, a clamping assembly and a switching valve; the driving device comprises a lifting power assembly and four driving units; each driving unit comprises a driving rack; the flatness detection device comprises a detection body, a pore plate and a conductive disc. The detection body is provided with a groove and an annular air cavity; the conductive disc is arranged in the groove; the pore plate is arranged at the opening of the groove; a detection cavity is defined by the pore plate, the conductive disc and the detection body; an air pipe extends from each hole position of the pore plate; a conductive elastic film is arranged at the tail end of the air pipe; the clamping assembly comprises a bearing ring and four clamping units; the bearing ring is in transmission connection with the lifting power assembly; each clamping unit comprises a clamping arm; the clamping arm is provided with a gear part; and the switching valve is connected with the annular air cavity. According to the invention, flatness detection is carried out on the wafer unit before vacuum adsorption.

The utility model discloses a grain blasting bead forming device which comprises a forming box, a solid-liquid separation box is arranged on one side of the forming box, a cleaning assembly is arranged on the other side of the solid-liquid separation box, the solid-liquid separation box comprises a box body and a plurality of arc-shaped pore plates, and the arc-shaped pore plates are arranged on the box body. The box body is fixed to the portion, on one side of the narrow end of the forming cavity, of the outer wall of the forming box, the top end of the box body communicates with the forming cavity, the arc-shaped hole plates are fixed to the inner wall of the box body and longitudinally arranged in a staggered mode, the bead dripping mechanism is arranged at the top end of the forming box, the forming cavity is formed in the forming box, and the cleaning assembly comprises a protective cover and a conveying belt. The protective cover is arranged on one side of the bottom end of the box body, and the conveying belt is arranged on the inner wall of the protective cover. According to the utility model, through the arrangement of the arc-shaped pore plate, when the blasting beads are separated from the forming liquid, the blasting beads are repeatedly rolled and formed on the surface of the arc-shaped pore plate, so that the shapes of the blasting beads are uniform, and the forming quality of the blasting beads is improved.

The application relates to an integrated vacuum pump testing method and testing device, and relates to the technical field of vacuum pumps, and comprises the following steps: controlling a water inlet pipe ball valve and a water return pipe ball valve to be opened, and collecting a water pipe flow value; when the water pipe flow value is consistent with a reference flow value, controlling a power supply start button to be opened, and controlling a curve data collection device to collect a limit vacuum degree of a buffer tank in an empty state; when the limit vacuum degree reaches a planned vacuum degree, installing a test orifice plate with an initial aperture at an air inlet position of the buffer tank, and adjusting the aperture of the test orifice plate in different ways, controlling the curve data collection device to collect a vacuum pumping speed and working basic parameters of the measured pump; based on the vacuum pumping speed, the curve data collection device generates a pumping speed change curve, based on the working basic parameters, the basic parameter change curve is generated, and the pumping speed change curve and the basic parameter change curve are output. The application has the effect of improving the testing efficiency of the vacuum pump.

The invention provides a high-stability bearing seat based on elastic buffering, the axis of the high-stability bearing seat is in the vertical direction after installation, the high-stability bearing seat comprises a seat body, an annular cavity is formed in the seat body, a plurality of fan-shaped damping units which are evenly arranged in the circumferential direction are arranged in the annular cavity, and the fan-shaped damping units are filled with magnetorheological fluid. Each fan-shaped damping unit comprises an outer cavity and an inner cavity which are sequentially arranged from outside to inside in the radial direction, the outer cavities and the inner cavities are connected through radial straight-through flow channels, a plurality of honeycomb hole plates are arranged in the inner cavities, and honeycomb holes of the honeycomb hole plates are staggered in the radial direction so that labyrinth flow channels can be formed in the inner cavities. A connecting pipe is arranged between every two adjacent fan-shaped damping units so that a circumferential straight-through flow channel can be formed between the fan-shaped damping units, the inner side wall and the outer side wall of each fan-shaped damping unit have the micro-deformation capacity, the preset pre-deformation amount of the outer side wall is larger than that of the inner side wall, and the yield strength of the inner side wall is larger than that of the outer side wall.

The invention discloses a wet-type film forming structure and a wet-type fire-retardant smoke hood all-in-one machine with the same. The wet-type film forming structure comprises a pore plate assembly and a water circulation device for conveying water to the pore plate assembly. The pore plate assembly comprises a lower pore plate and an upper pore plate, and lampblack sequentially penetrates through the lower pore plate and the upper pore plate; the water circulation device continuously conveys water to the lower pore plate and forms a water film on the lower pore plate, the thickness of the water film is set to be 8-12 mm, and the flow speed of the oil fume penetrating through the lower pore plate is 8-12 m / s; saturated oil fume gas is in contact with the upper pore plate for cooling and water removal after being in contact with the water film of the lower pore plate for cooling and filtering, the lower pore plate and the upper pore plate are arranged, so that the oil fume purification effect is better, and meanwhile, the water circulation device is arranged to convey water to the lower pore plate and form the water film, so that the oil fume can be in contact with water all the time, and the oil fume is cleaned and cooled.

The inductor production tin immersion device comprises a tin immersion box, a storage cavity with a semicircular vertical section is arranged at the bottom in the tin immersion box, a stirring mechanism with one end extending into the tin immersion box above the storage cavity is arranged in the storage cavity, and a tin immersion mechanism driven by the stirring mechanism is arranged at the top in the tin immersion box; the stirring mechanism comprises a rotating shaft which is positioned in the storage cavity and is driven by a motor, and a plurality of groups of rectangular pore plates I are arranged on the outer wall of the rotating shaft in the storage cavity; the tin immersion mechanism comprises a filter frame, a strip-shaped plate is longitudinally arranged at the bottom of the filter frame, a supporting shaft with the tail end embedded into the side wall of the tin immersion box is further longitudinally arranged at the top of the filter frame, a sleeve is arranged on the portion, in the filter frame, of the supporting shaft in a sleeving mode, hole-shaped cover plates are arranged on the two sides of the sleeve, and an arc-shaped hole plate is arranged in the portion, below the cover plates, of the filter frame. The cover plate seals an opening in the top of the arc-shaped hole plate, and a rectangular hole plate II abutting against the inner arc wall of the arc-shaped hole plate is arranged on the outer wall of the bottom of the sleeve in the radial direction. The device is simple in structure and convenient to use.

The utility model discloses a protective atmosphere mixing device of a humidifier for oriented silicon steel decarburization production, which belongs to the technical field of oriented silicon steel decarburization devices and comprises a mixing tank, an air inlet pipe, an air outlet pipe and an air outlet pipe. The gas collecting hood is connected to the mixing tank and covers the opening of the mixing tank, and a gas outlet pipe is arranged on the gas collecting hood; a flow guide member; gas such as nitrogen and hydrogen enters the flow guide part from different gas inlet pipes, the direction of the gas is changed after the gas impacts the inner wall of the flow guide part, so that the gas is premixed in the flow guide part, the premixed gas enters the turbulent flow gaps, the direction of the gas is changed multiple times under the action of the turbulent flow plates, and the gas flow is uniform. According to the decarburization device, mixing of gas in the turbulent flow channel is achieved, the gas continues to flow, impacts the mixing pore plate and changes the direction, remixing of the gas is achieved, the mixed gas flows into the humidifier from the gas outlet pipe under the flow guiding effect of the gas collecting hood, uniform mixing of protective atmosphere is achieved, and the stability of the decarburization effect is guaranteed.

The utility model discloses a compressor shock absorption structure of a vehicle-mounted oxygen generator, which belongs to the technical field of compressor shock absorption and comprises a primary shock absorption structure and a secondary shock absorption structure, the primary shock absorption structure is connected to the upper end of the secondary shock absorption structure, and a compressor penetrates through the primary shock absorption structure and falls into the secondary shock absorption structure. The carrying pore plate located in the middle of the compressor is fixedly connected with the first-stage damping structure. The first-stage damping structure comprises a damping plate and first dampers, and the first dampers are evenly distributed on the side face of the damping plate. The second-stage damping structure comprises a damping frame and second dampers, an opening is formed in the upper end of the damping frame, the damping plate is arranged in the opening and connected with the upper end of the damping frame through the first dampers, the second dampers are evenly distributed at the bottom of the damping frame, and the damping frame is installed in the vehicle-mounted oxygen generator through the second dampers. The double-stage shock absorption compressor adapts to vehicle-mounted complex working conditions through a double-stage shock absorption layout and is particularly suitable for bumpy road surfaces or long-time operation scenes, and the service life of the compressor is remarkably prolonged.

The invention discloses a flue gas flow equalizing device for a turning flue of a compact boiler, and relates to the technical field of flue gas flow equalizing devices. The device comprises a flow guide plate arranged at an inlet of a turning flue and used for preliminary flow guide; the different-diameter flow equalizing pore plate is arranged at the downstream of the flow guide plate, and the flue gas flow speed is balanced through the differentiated design that small holes are formed in the high flow speed position and large holes are formed in the low flow speed position; and the rectifying grid is arranged at the downstream of the reducing flow equalizing pore plate so as to further optimize the uniformity of the flow field. Through a three-stage flow equalizing system formed by the guide plates, the different-diameter flow equalizing pore plates and the rectifying grids, the problem that the flue gas flow velocity at the turning flue of the compact boiler is not uniform is solved, and while the denitration efficiency is improved, the device has the advantages of being simple in structure, low in manufacturing cost, small in occupied space and the like.

The application discloses a kind of anti-overpressure self pressure relief type infusion pressurizing bag structure, more specifically relates to infusion pressurizing technical field, including pressurizing bag, one end of the pressurizing bag is communicated with exhaust cylinder, the inner wall of the exhaust cylinder is fixed with orifice plate;The inner wall of the orifice plate is provided with the aperture of the small hole, the medium hole and the large hole in order to increase;The side of the orifice plate is correspondingly contacted with small pad, medium pad and large pad for plugging small hole, medium hole and large hole respectively;The side of the small pad is equipped with ladder adjusting part.The application realizes three-stage ladder type dynamic pressure relief, greatly improves the adaptive adjustment ability of pressure relief area, and has the advantages that pressure relief response is more timely and efficient, thereby solving the problem that it is difficult to realize dynamic ladder adjustment of pressure relief area according to real-time pressure, greatly reducing the pressure relief adaptability of infusion pressurizing bag structure, and the problem that pressure relief response is relatively inefficient.