36results about How to "Accurate sampling volume" patented technology

An air pollution sampling system and a method thereof applied to a wide-area air sampling are revealed. Air is forced into an air sampling unit by movement of a vehicle, for performing an active air sampling without a power source. An air sampling unit includes a plurality of baffle plates so as to adjust air sampling rate and avoid interference caused by turbulence generated during the movement of the vehicle. A positioning device provides geographic coordinates, vehicle speed and time. An information processing device integrates sampling flow and positioning information from the positioning device, collects information generated by the sampling system, and computes statistics of the accumulated samples and relative sampling positions. By the collected sampling positions, time and flow rate, the sampling amount is obtained through data processing and calculation. In combination with the display of positioning data, the geographic area represented by the air samples could be understood more clearly.

The invention provides a soil constant-volume sampling device comprising a cylinder body in which a cavity is arranged. The soil constant-volume sampling device is characterized in that a piston push rod provided with a piston plate at the bottom and a handle at the top is arranged in the cavity of the cylinder body; the lower part of the cylinder body is movably connected with a drill provided with saw teeth at the end part; a vertical groove extending to the wall of the drill is arranged on the wall of the cylinder body; a fixed bolt is arranged in the vertical groove; a constant-volume bayonet is arranged at the lower end of the cylinder body; and a constant-volume chuck is arranged in the constant-volume bayonet along the section of the cylinder body. A sampling cylinder can be conveniently pressed into soil, and an obstruction can be cut off and smashed through the drill at the lower end of the cylinder body; soil samples are filled in the cavity of the cylinder body while the sampling depth is reached; after being taken out, the soil samples can be pushed out of the cylinder through the piston push rod; and constant-volume soil with different depths can be intercepted through the constant-volume chuck in the constant-volume bayonet without damaging the soil samples. The soil constant-volume sampling device has the characteristics of simple structure, accurate sampling volume, little damage to a sample area and the like, and is convenient to operate.

The invention provides a liquid collector, which comprises a liquid fetch piece, a connecting piece and a liquid storage pipe. The liquid fetch piece and the liquid storage pipe are detachably connected through the connecting piece. The liquid fetch piece is provided with a liquid fetch cavity. The connecting piece comprises a connecting pipe. The liquid storage pipe is provided with a liquid storage cavity. The liquid fetch cavity and the liquid storage cavity are communicated with each other through the connecting pipe. According to the liquid collector, the liquid fetch cavity of the liquid fetch piece receives a liquid, and the liquid flows into the liquid storage cavity of the liquid storage pipe through the connecting pipe. The liquid fetch process requires no manual liquid pouring. The operation is simple, and sprinkling and leakage of the liquid are avoided so as to avoid from polluting the outer wall of the liquid storage pipe. After the liquid is collected, the liquid storage pipe and the liquid fetch piece are separated, and the liquid storage pipe is then sent for detection. The liquid collector is very convenient. In addition, with the setting of a quantitative control piece, it is very convenient to obtain a quantitative amount of liquid, and reserved sample amount of the liquid is accurate. Thus, it is convenient for subsequent detection.

The invention discloses a high-level radioactive waste liquid sampling rod for accurate sampling based on servo control, which includes a sampling work box, the upper end of the sampling work box is provided with a fixing seat and an installation seat, and the upper end of the fixing seat is provided with a suspender positioning pull rope Displacement sensor, the upper end of mounting seat is provided with electric servo lifting device; The upper end of described sampling working box is provided with stay rope sensor steel wire rope, steel wire rope A and steel wire rope B; The upper end of described sampling working box is provided with suspender module unit, suspender The front end of the modular unit is provided with a buckle-type quick-change mechanical interface device and a sampler. The sampler set with the high-level radioactive waste liquid sampling rod based on servo control and accurate sampling performs sampling of each layer of organic phase, clear liquid phase and mud phase for quantitative and accurate sampling; pull rope sensor steel wire rope and boom positioning pull rope displacement sensor , to achieve real-time position monitoring and control of accurate sampling; the overall structure is stable, the sampling point is positioned accurately, and the sampling volume is accurate.

The invention relates to a field enrichment device for volatile organic compounds in underground water, belonging to the technical field of environmental monitoring. The enrichment device comprises an upper tank body and a lower tank body connected in a threaded connection manner, wherein a vertically communicated first sample injection hole, a gas inlet hole and a gas outlet pipe are arranged on the upper tank body; a second communicated sample injection hole is formed in the lower tank body; and a drying device and an adsorption device are arranged in the gas outlet pipe. The operating method of the device comprises the following steps: immersing the enrichment device in a sampling water body in a rope tying or handheld manner, introducing nitrogen via the gas inlet hole after the water body sample is completely collected, drying organic matters in the drying device, adsorbing the organic matters by the adsorption device, and finishing the collection process. According to the enrichment device, loss of the volatile organic compounds in the collection process and sample transfer process can be avoided, the organic matters in the samples are completely collected, the detection result is closer to the true situation, the reference property can be greatly improved, and the device is applied to be popularized and applied in related fields.

The invention discloses a crude oil quantitative sampling device which comprises a sampling probe which stretches into a raw oil pipeline, wherein the sampling probe is connected with a manual ball valve, a circulation pump, a filter, a first check valve, a first pneumatic three-way valve and a second check valve in sequence through a circulation pipeline; the second check valve is communicated with a crude oil pipeline through another circulation pipeline; the circulation pipeline between the first check valve and the pneumatic three-way valve is connected with a sampling pipeline; a pneumatic ball valve, a quantitative tank and a second pneumatic three-way valve are sequentially arranged on the sampling pipeline and is finally connected with a sample receiving bottle; the first pneumatic three-way valve and the second pneumatic three-way valve are connected through a pipeline; a lifting platform is arranged below the sample receiving bottle. The crude oil quantitative sampling device solves a series of problems of a conventional automatic sampling device and is reasonable in structure, accurate in sampling amount and good in working property.

The invention discloses a sample feeding device for measuring a trace target substance in blood sample. The sample feeding device comprises a detection channel, a sample feeding channel, an auxiliary channel, a detection pipeline unit, a sample feeding pipeline unit set, a detection pump, a sampling pump set and a control unit, wherein one section of the detection channel at the downstream is configured into a detection region and a detection window is arranged on the detection region; the sample feeding channel is connected with the upstream section of the detection channel to form a sample feeding bypath; the auxiliary channel is connected onto the detection channel between a connection point of the sample feeding channel and the detection region to form a sample feeding and leaking bypath; the detection pipeline unit is matched and connected with the detection channel and is provided with a control valve; the sample feeding pipeline unit set is matched and connected with the sample feeding channel and the auxiliary channel and is provided with a control valve set; the detection pump is connected into the upstream end of the detection channel by the detection pipeline unit and the corresponding control valve and is used for pumping a detection auxiliary solution; the sampling pump set is connected into the sample feeding channel by the sample feeding pipeline unit set and the corresponding control valve set and is used for correspondingly pumping a sample feeding liquid set; the control unit is connected with the detection pump, the sample feeding pump, the control valve and the control valve set and is used for logically controlling movement sequences of the detection pump, the sample feeding pump set and the matched control valve, and the control valve set.