53results about How to "Same flow rate" patented technology

The invention discloses a monitoring device and method for aerosol in a pipeline and a pipeline system. The monitoring device comprises a variable diameter mechanism, a detection circuit, a sampling mechanism, a backflow mechanism, a first detection mechanism, a second detection mechanism and a first control valve, wherein the variable diameter mechanism can control the opening of the pipeline; the detection circuit is provided with a measuring device for testing the aerosol concentration and the particle size distribution; the inlet end of the sampling mechanism is communicated with the pipeline positioned at the upstream of the variable diameter mechanism, and the outlet end of the sampling mechanism is communicated with an inlet of the detection circuit; the outlet end of the backflow mechanism is communicated with the pipeline positioned at the downstream of the variable diameter mechanism, and the inlet end of the backflow mechanism is communicated with an outlet of the detectioncircuit; the first detection mechanism is used for detecting the flow rate of gas in the pipeline; the second detection mechanism is used for detecting the flow rate of gas in the detection circuit; and the first control valve is used for controlling the flow rate of the gas in the detection circuit. The monitoring device disclosed by the invention has the benefit that the opening of the variablediameter mechanism can be dynamically adjusted, so that the flow rate of sample gas is the same as that of the gas in the pipeline, and the measuring accuracy is improved.

The invention discloses a method and a device for cleaning wafers. The method for cleaning wafers comprises the following steps: providing a platform for bearing and rotating a wafer, wherein the wafer is provided with a surface to be cleaned; arranging a nozzle above the wafer for spraying cleanout fluid on the surface to be cleaned; then cleaning: rotating the wafer; and moving the nozzle at non-constant velocity to a second set point from a first set point on the surface to be cleaned so that the time the first set point exposes to the cleanout fluid is same with the time the second set point exposes to the cleanout fluid. In addition, the nozzle moves slowly when close to the edge of the wafer, and moves faster when close to the centre of a circle of the wafer.

The invention relates to a radiation device with a wind scooper. Conventional radiators have the disadvantages of the low wind speed of a high-temperature area, the high wind speed of a low-temperature area and poor radiation effect. The radiation device with the wind scooper comprises a heat-conducting pedestal and a radiation fin set arranged on the heat-conducting pedestal. The radiation device is characterized in that: the TT-shaped wind scooper is sleeved on the periphery of the radiation fin set; and one end of the wind scooper is externally extended to form a wind inlet with an externally-extended surface, while the other end is provided with a TT-shaped wind outlet. The radiation device with the wind scooper has the advantages of making the flow speed of airflows flowing through the radiator higher than that of an external wind field, increasing the airflow and flow speed of the high-temperature area of the radiator, not decreasing the airflow and the flow speed of a downstream area of the radiator and improving radiation performance from three aspects.

The invention belongs to the technical field of waste gas treatment, and discloses a waterproof roll production workshop waste gas treatment device and a treatment process thereof. The treatment device comprises: a gas collection device, a pretreatment device, a speed reduction device and an adsorption device which are sequentially arranged in a waste gas circulation direction; the speed reductiondevice comprises a flow dividing buffer assembly, the shunting buffer assembly comprises a gas-guide tube, and a first flow dividing tube and a second flow dividing tube which are connected to one side of the gas-guide tube; the gas-guide tube is connected with the top of the pretreatment device, the flow dividing ratio of the first flow dividing tube to the second flow dividing tube is 1:4-2:3,the gas outlet end of the first flow dividing tube is bent to form a bent part, and the outlet end of the bent part faces the second flow dividing tube to form opposite gas outlet of the first flow dividing tube and the second flow dividing tube; in conclusion, based on the arrangement of the flow dividing buffer assembly, flow dividing and guiding of the waste gas are achieved, the waste gas after flow dividing forms flow velocity offset in an opposite guiding mode, and therefore, the speed reduction effect of the waste gas is effectively achieved.

The invention relates to the technical field of concentration measurement, and in particular relates to a gas extraction pipeline methane concentration detecting device. The device is arranged on a gas extraction pipeline, and comprises a branch pipeline, a laser emitting component, a laser receiving component, a control room and an air guiding mechanism. The branch pipeline has an upstream end and a downstream end. The upstream end and the downstream end are communicated with the extraction pipeline respectively. The laser emitting component is arranged on the branch pipeline to emit laser todetect methane. The laser receiving component and the laser emitting component are arranged on the branch pipeline oppositely, and the laser receiving component is used for receiving the laser. The control room is connected with the laser emitting component and the laser receiving component and is used for analyzing the methane concentration. The air guiding mechanism is arranged on the branch pipeline, is arranged outside the laser receiving component and the laser emitting component, and is used for introducing gas in the extraction pipeline into the branch pipeline to make the gas flow rate in the branch pipeline and the extraction pipeline the same. The gas extraction pipeline methane concentration detecting device provided by the invention has the advantages of high detection speed and accurate detection.

The invention discloses novel stuffing filling equipment and belongs to the technical field of food processing. The novel stuffing filling equipment comprises a machine frame, a conveying belt, a mashing and stuffing dividing integrated system and a stuffing filling system. The mashing and stuffing dividing integrated system comprises a storage inner cylinder, a masher, a sealing outer cylinder and a spiral storage channel, wherein the storage inner cylinder is provided with a storage cavity, the masher can work within the full-length range of the storage cavity, the outer surface of the storage inner cylinder is sleeved with the sealing outer cylinder, and the spiral storage channel is arranged between the storage inner cylinder and the sealing outer cylinder. The cylinder wall of the storage inner cylinder is provided with a plurality of stuffing outlets which communicate with the spiral storage channel and the storage cavity. Through the spiral storage channel, stuffing is divided into stuffing flows with a fixed sectional area, the flow speeds of the stuffing flows are made to be consistent under the same extrusion force in the storage cavity, and accordingly the effect that the flows are identical is ensured; and on that basis, the weights of all stuffing bodies are completely consistent through precise splitting of a splitting mechanism, and finally precise stuffing dividing is achieved.

The invention discloses a mud suction pipe of a single-pipe suction dredge. The mud suction pipe comprises a pipe body, baffles and circular holes, wherein the baffles connected with the inner side wall of the pipe body is arranged inside the pipe body; the baffles divide the internal part of the pipe body into an area I, an area II, an area III and an area IV; the plurality of horizontally arrayed circular holes are formed in the side wall of the pipe body in each area to enable the internal part of each area to be communicated with the outside. Through the adoption of the technical scheme, the areas in the pipe body are separated and not communicated, so that the independent operation of each area can be guaranteed, and further the mixed flow is avoided; the hole diameters of the circular holes are the same, and the hole pitches of the circular holes in the areas are the same, so that the processing is facilitated, the fact that the flow speeds of liquid entering the areas are the same is guaranteed, and the flowing stability of the liquid in the pipe body can be improved.

The invention relates to a radiation device with a wind scooper. Conventional radiators have the disadvantages of the low wind speed of a high-temperature area, the high wind speed of a low-temperature area and poor radiation effect. The radiation device with the wind scooper comprises a heat-conducting pedestal and a radiation fin set arranged on the heat-conducting pedestal. The radiation device is characterized in that: the TT-shaped wind scooper is sleeved on the periphery of the radiation fin set; and one end of the wind scooper is externally extended to form a wind inlet with an externally-extended surface, while the other end is provided with a TT-shaped wind outlet. The radiation device with the wind scooper has the advantages of making the flow speed of airflows flowing through the radiator higher than that of an external wind field, increasing the airflow and flow speed of the high-temperature area of the radiator, not decreasing the airflow and the flow speed of a downstream area of the radiator and improving radiation performance from three aspects.

The invention discloses a gas-liquid reaction method and a special device. During the reaction, a raw material liquid enters a tubular reactor from a raw material liquid inlet of the tubular reactor, and raw material gas is fully mixed with a reaction liquid or the raw material liquid at a mixed flow circulating pump inlet and subjected to a gas-liquid reaction in a circulating pipeline and the tubular reactor along the flow path; energy supplement is performed by the aid of a ripening reactor outer jacket at the initial stage of the reaction, and automatic energy supplement is set after the reaction system is stabilized; forced circulating reaction is adopted. The working performance is good, the yield is effectively increased, and byproducts are reduced or avoided.

The present invention relates to improvement of structure of homogeneous furnace capable of carrying out anti explosive treatment on toughened glass. The invention provides a homogeneous furnace for toughened glass which is energy-saving and highly production efficient. The homogeneous furnace comprises a furnace body, a furnace door and an air cooler being installed on both sides of the furnace body respectively. The structure of the furnace is characterized in that a temperature-insulating layer is installed on the periphery of the furnace body, thermal cycle ducts are installed at the two sides of the furnace body and at the temperature-insulating layer on the top, a heater and a circulating fan are installed at the bottom and the top of the thermal cycle duct respectively, and a cooling cycle duct is installed between the thermal cycle ducts on the top of the furnace body.

The invention discloses a fuel cell cooling flow field plate, wherein the outer wall of the flow field plate has a circular shape; a flow field plate outer ring is arranged on the periphery of the outer wall of the flow field plate; a variable-diameter inlet flow channel is arranged on the upper side of the flow field plate; a variable-diameter outlet flow channel is arranged on the lower side of the flow field plate; the width dimension of each variable-diameter structure is greater than that of the corresponding inlet or outlet flow channel; and a cylindrical cooling flow channel is arranged on one side in the cooling flow field plate. The inlet flow channel and the outlet flow channel are variable-diameter structures so as to avoid the negative pressure caused by the backflow of a coolant at an outlet. The regularly distributed cylindrical cooling flow channel is arranged inside the flow channel so that the coolant can be evenly distributed at various positions in the flow channel, achieves uniform heat exchange with various positions of a bipolar plate, and has low flow resistance. The fuel cell cooling flow channel provided by the invention can improve the cooling effect of the cooling flow field plate, improves the power generation efficiency and durability of a fuel cell, makes the distribution of the coolant uniform, reduces local hot spots, and reduces the flow resistance of the coolant.

The invention discloses a double-piston-cylinder constant flow output method. Each piston cylinder has a continuously circulating liquid suction stroke and a continuously circulating liquid discharge stroke; each liquid discharge stroke sequentially comprises an acceleration stage, a constant speed stage and a deceleration stage; the acceleration stage of one piston cylinder corresponds to the deceleration stage of the other piston cylinder, and the flow change rates of the two piston cylinders in the stage are the same; and the constant speed stage of one piston cylinder corresponds to the liquid discharge stroke of the other piston cylinder, and the sum of the liquid discharge flows of the two piston cylinders is constant at any moment. According to the double-piston-cylinder constant flow output method provided by the invention, the acceleration stage of one piston cylinder corresponds to the deceleration stage of the other piston cylinder, the constant speed stage of one piston cylinder corresponds to the liquid suction stroke of the other piston cylinder, and the flow change rates of the two piston cylinders are the same, so that the sum of the output flows of the two piston cylinders is a fixed value.

The invention discloses novel stuffing filling equipment and belongs to the technical field of food processing. The novel stuffing filling equipment comprises a machine frame, a conveying belt, a mashing and stuffing dividing integrated system and a stuffing filling system. The mashing and stuffing dividing integrated system comprises a storage inner cylinder, a masher, a sealing outer cylinder and a spiral storage channel, wherein the storage inner cylinder is provided with a storage cavity, the masher can work within the full-length range of the storage cavity, the outer surface of the storage inner cylinder is sleeved with the sealing outer cylinder, and the spiral storage channel is arranged between the storage inner cylinder and the sealing outer cylinder. The cylinder wall of the storage inner cylinder is provided with a plurality of stuffing outlets which communicate with the spiral storage channel and the storage cavity. Through the spiral storage channel, stuffing is divided into stuffing flows with a fixed sectional area, the flow speeds of the stuffing flows are made to be consistent under the same extrusion force in the storage cavity, and accordingly the effect that the flows are identical is ensured; and on that basis, the weights of all stuffing bodies are completely consistent through precise splitting of a splitting mechanism, and finally precise stuffing dividing is achieved.

The invention belongs to the field of environmental protection production automation control, and particularly relates to an automatic control device of an active coke adsorption tower flue gas balance system, which is characterized by comprising a gas flow meter and a flow transmitter arranged on a booster fan outlet main pipe, and a pressure transmitter arranged on an inlet branch pipe of an air inlet chamber of each adsorption unit, the pressure transmitter and the thermal resistor of each adsorption unit transition air chamber, the pressure transmitter on the outlet branch pipe of each adsorption unit air outlet chamber, the electric butterfly valve on the outlet branch pipe of each adsorption unit air outlet chamber, and the pressure transmitter, the thermal resistor and the electric butterfly valve at different positions of each adsorption unit are connected with the PLC system. The device is not affected by the steps of element machining, manufacturing, assembling, welding and the like of each adsorption unit, the resistance coefficient zeta of each adsorption unit is measured under the actual production working condition, and therefore the smoke flow of each adsorption unit is obtained, the smoke amount is controlled by adjusting an outlet electric butterfly valve, and automatic control over the tower-attached smoke balance system is truly achieved.

The invention relates to an automatic natural environment continuous waterflow simulation test device, which comprises a water conditioning system, a dilution table, a biological test culture cabinet, a temperature and illumination control system, a data monitoring and acquiring system, a wastewater collection system, a water storage system and the like. Compared with the prior art, the automatic natural environment continuous waterflow simulation test device has the advantages that the device is evidently effective in natural waterflow dynamic environment simulation, stable in long-time operation, high in safety, simple in regulation, high in automation level, easy to demount for washing and easy to replace. Whole-course automatic monitoring, tracking and recording of the whole test process by a computer can be realized, reliability and stability in operation of the long-term waterflow test can be guaranteed by the test device, and the test device is applicable to GLP (good laboratory practice) tests of short or long toxicity of various relevant aquatic organisms published by the OECD (organization for economic cooperation and development) and the EPA (environmental protection agency).