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39results about How to "Improve sampling productivity" patented technology

Tritium-containing exhaust gas discharge monitoring automatic sampling system

The invention provides a tritium-containing exhaust gas discharge monitoring automatic sampling system and belongs to the technical fields of radiation protection and environmental protection. The air inlet tube joint in the sampling system is connected with a flow control valve, solenoid valves, dust filters, a mass flow meter and a pressure meter through a gas tube and then is connected with the gas inlets of pumps, and the gas outlets of the pumps are connected with the joints of an exhaust tube through exhaust tubes; the gas inlet and the gas outlet of a total tritium sampler are connected with a gas collection tube and the exhaust tube through flexible tubes respectively; and the signal input end of an automatic control unit is in external connection with a chimney flow monitoring PLC controller, and the signal output end of the automatic control unit is connected with the total tritium sampler, the flow control valve, the solenoid valves, the mass flow meter, the pressure meter and pumps respectively. The sampling system which allows the sampling precision to be less than 1min has the advantages of intelligent regulation and control, strong practicality, improvement of the fragmentary discharge of a tritium effluent, improvement of the representativeness of a tritium monitoring sample when the concentration difference is large, mitigation of the labor intensity of an effluent monitoring sampling personnel, and improvement of the working efficiency.
Owner:INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF

Positive and negative pressure combined plug flow fixed-point sampling device

The invention discloses a positive and negative pressure combined plug flow fixed-point sampling device, which includes a double-wall drill rod, a drill bit, a four-way connector, a three-way connector, a negative pressure generator, a gas-solid gravity separator and a sample collection tank, as well as an annular nozzle ejector disposed in the drill bit. The rear end of the double-wall drill rod is sleeved with a two-channel faucet on the outside. The first channel of the two-channel faucet is connected to a first interface of the four-way connector, and the second channel of the two-channel faucet is connected to a first interface of the three-way connector. The second interface of the four-way connector is communicated with the second interface of the three-way connector. The third interface of the four-way connector is connected to the first air inlet of the negative pressure generator. During sampling, a material plug with a section of a sample and a section of compressed air is formed in a double-wall drill rod in-inner wall channel, and has small motion resistance in the double-wall drill rod in-inner wall channel. Driven by a negative pressure, the sample moves fast, and the sampling work has high efficiency. No plugging or drilling is needed in a sampling process, and the process is simple. Sampling can be performed at any drilling point, thus realizing fixed-point sampling.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD

Coal mine underground gas sampling device and method

A coal mine underground gas sampling device comprises a bag body, gas cylinders, rubber pipes, pipe orifice switchers and an air pump, wherein the gas cylinders are arranged in the bag body side by side, the two ends of each rubber pipe are connected with the corresponding gas cylinder and the corresponding pipe orifice switcher respectively, and the pipe orifice switchers are connected with the air pump. The gas collecting process includes the following steps that one pipe orifice switcher is adjusted to the target gas cylinder to collect a gas sample, and gas collection of the gas cylinder is completed when a gas bag inflates; gas collection of the next pipe is conducted; when the gas samples need to be collected continuously, the corresponding pipe orifice switcher is directly adjusted and sequentially collects the gas sample from other gas cylinders; when the gas samples need to be collected interruptedly, gas collection of the next pipe is conducted after the corresponding pipe orifice switcher exhausts residual gas inside, and collection of different gases is sequentially completed. The gas sampling device is convenient to carry and convenient to operate, effectively reduces the carrying size, ensures gas sample seal performance, meets the requirement of continuous sampling, improves working efficiency of underground safety monitoring staff, distinguishes the underground danger source in time and ensures life safety of staff and economic benefits of an enterprise.
Owner:LIAONING TECHNICAL UNIVERSITY

Positive and negative pressure combined plug flow fixed-point sampling device

The invention discloses a positive and negative pressure combined plug flow fixed-point sampling device, which includes a double-wall drill rod, a drill bit, a four-way connector, a three-way connector, a negative pressure generator, a gas-solid gravity separator and a sample collection tank, as well as an annular nozzle ejector disposed in the drill bit. The rear end of the double-wall drill rod is sleeved with a two-channel faucet on the outside. The first channel of the two-channel faucet is connected to a first interface of the four-way connector, and the second channel of the two-channel faucet is connected to a first interface of the three-way connector. The second interface of the four-way connector is communicated with the second interface of the three-way connector. The third interface of the four-way connector is connected to the first air inlet of the negative pressure generator. During sampling, a material plug with a section of a sample and a section of compressed air is formed in a double-wall drill rod in-inner wall channel, and has small motion resistance in the double-wall drill rod in-inner wall channel. Driven by a negative pressure, the sample moves fast, and the sampling work has high efficiency. No plugging or drilling is needed in a sampling process, and the process is simple. Sampling can be performed at any drilling point, thus realizing fixed-point sampling.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD

Device for removing cap from oil sample joint in substation oil sampling operation

The invention discloses a device for removing a cap from an oil sample joint in substation oil sampling operation. The device comprises a positioning bracket, an oil sample joint head cap rotating mechanism and an electric torque handle with a power source, wherein the positioning bracket comprises a bottom hexagonal socket sleeve and a top plate connected with the bottom hexagonal socket sleeve,the bottom hexagonal socket sleeve is matched with the hexagonal bottom of the oil sample joint to achieve tool positioning, and the middle position of the top plate is provided with a bearing installation hole in which a sunken bearing is installed; the oil sample joint head cap rotating mechanism comprises a structure frame, a sunken intermediate plug-in transmission gear connected to the structure frame and three geared pawl fingers arranged around the sunken intermediate plug-in transmission gear, the sunken intermediate plug-in transmission gear is in meshing transmission with the gearedpawl fingers, and the center of the sunken intermediate plug-in transmission gear is provided with a transmission hole; and the electric torque handle with the power source comprises a transmission rod, and the transmission rod penetrates through the sunken bearing on the top plate and is inserted in the transmission hole of the sunken intermediate plug-in transmission gear. The device can improvethe sampling working efficiency, reduce the sampling uncapping difficulty and improve the safety and reliability of one-site sampling uncapping work.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO +1

Automatic sampling and reducing device for limestone belt conveyor

The invention relates to an automatic sampling and reducing device for a limestone belt conveyor. The automatic sampling and reducing device comprises a belt conveyor, and an electric-control cabinet,and further comprises an automatic sampling unit and an automatic reducing unit, wherein the machine head of the belt conveyor is equipped with an unloading scraper-trough conveyer on a transfer station bracket of the belt conveyor; a material receiving belt is arranged below a discharge hole of the unloading scraper-trough conveyor; the automatic sampling unit comprises a first electric-hydraulic pushing rod pedestal, a first electric-hydraulic pushing rod and a turnover hopper; a feeding pipeline is arranged on the transfer station bracket of the belt conveyor; an upper-end charge hole of the feeding pipeline is formed in the lower portion of the turnover hopper; the automatic reducing unit is arranged below a lower-end discharge hole of the feeding pipeline; and the automatic reducingunit comprises a material collecting hopper, a second electric-hydraulic pushing rod pedestal, a second electric-hydraulic pushing rod, a sample separator, a sample box and a waste tank. The automaticsampling and reducing device is simple in structure, improves sampling and working efficiency, saves manpower and material resources, eliminates safety risk, and realizes automatic sampling and automatic reducing for large-particle-diameter materials.
Owner:唐山冀东启新水泥有限责任公司

Automatic powder supply trace detection equipment and powder supply method for extracting fingerprints by powder method at crime scene

An automatic powder supply and trace detection device for extracting fingerprints by means of crime scene powder method and powder supply method thereof; an air pump (3) is in electrical communication with a battery (1), and an air outlet end of the air pump (3) is in communication with a powder bottle (7); an ultra-microporous fluidised bed (10) is installed inside the powder bottle (7), the trace detection powder in the powder bottle (7) being accommodated above the ultra-microporous fluidised bed (10); pressurised air outputted by the air pump (3) passes through the ultra-microporous fluidised bed (10) from below the ultra-microporous fluidised bed (10), forming a plurality of independent air streams acting on the bottom of the trace powder, and producing a mixed gas on the surface of the trace detection powder; one end of an outer shell (22) is provided with a nozzle (20) having a nozzle opening, and a brush head (13) surrounds the nozzle opening, a mixed gas pipe (8) being hermetically connected to the nozzle opening being arranged inside the powder bottle (7), the mixed gas produced in the powder bottle (7) being conveyed to the brush head (13) of the nozzle opening by means of the mixed gas pipe (8), and the trace detection powder in the mixed gas coming into contact with a fingerprint trace and attaching to the surface of the fingerprint trace to form a clear image. The automatic powder supply and trace detection device improves the working environment of police officers, reduces the amount of powder used, and increases the efficiency of sampling work.
Owner:DALIAN SAMAT NEW MATERIAL CO LTD

Automatic powder supply trace detection equipment and powder supply method for extracting fingerprints by powder method at crime scene

The invention relates to a trace detection tool in the field of public security criminal investigation, in particular to an automatic powder trace detection device and a powder supply method for extracting fingerprints by powder method at a crime scene. The front cover and the rear cover and the base are respectively installed on the bracket , the air pump and the powder bottle are respectively housed in the inner space formed by the back cover and the bracket, the base and the bracket, and are installed on the bracket respectively, the spray tube is placed in the front cover, one end is hinged with the bracket, and the other end is installed with a fluffy brush; The fluidized bed is located below the powder contained in the powder bottle. The lower end of the powder bottle is connected to the air pump, and the upper end is connected to the spray barrel through the airflow conduit; the pressurized gas provided by the air pump is "boiling" the powder through the fluidized bed. The mixed gas with powder is sprayed onto the trace inspection working surface through the nozzle, the flowing powder touches the trace and is adsorbed on the surface of the trace to form a clear image. , the image after brushing is clearer and more stable.
Owner:DALIAN SAMAT NEW MATERIAL CO LTD

Sampling valve with labyrinth damping structure

The sampling valve with the labyrinth damping structure comprises a sampling valve shell, a water outlet pipe is fixedly connected to the right side of the sampling valve shell, a connecting flange is fixedly installed on the lower portion of the outer side of the sampling valve shell, a valve rod is movably installed at the top of the sampling valve shell in a penetrating mode, and a control knob is fixedly installed at the upper end of the valve rod. The lower end of the valve rod is located in an inner cavity of the sampling valve shell, a valve element is fixedly installed at the lower end of the valve rod, telescopic rods are fixedly installed on the left side and the right side of the lower surface of the valve element correspondingly, and a rotary blocking block is fixedly connected to the lower ends of the two telescopic rods jointly and movably installed at the bottom of the inner cavity of the sampling valve shell. A connecting groove is formed in the upper surface of the rotary blocking block, and three water inlet holes are formed in the surface of an inner cavity of the connecting groove. The pressure of the sampling liquid outlet can be conveniently adjusted, unnecessary troubles caused by liquid splashing are prevented, and the sampling valve can be effectively prevented from being blocked.
Owner:长春电子科技学院
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