36results about How to "Reliable sampling" patented technology

The invention discloses a liquid pressure-maintaining and sampling tube which comprises a connector, two cavities and two sampling valves, wherein the two cavities are respectively connected with the two ends of the connector; a communicating hole is formed in the connector and communicated with the two cavities, and ladder-shaped through holes are an outer end hole, a sealing hole, a flow guide groove and a flow guide hole from outside to inside in sequence and are formed in the two cavities; each sampling valve is composed of a valve body, a sealing shaft and a valve rod which are connected in sequence, matched with the corresponding ladder-shaped through hole through threads and fixed in the ladder-shaped through hole, each sealing shaft is in close fit with the corresponding sealing hole, a ball is propped against the end part of each flow guide hole, and pistons are respectively arranged in the two cavities. The liquid pressure-maintaining and sampling tube disclosed by the invention can realize spontaneous sampling without an additional drive device, is simple in structure, convenient to operate, good in pressure-maintaining property and reliable in sampling and can be recycled.

The coal slurry reactant sampling device includes one sampling container connected through pipes with valves to the material conveying pipeline; solvent oil pipes with valve; hydrogen pipes; one gas sampling pipe in the upper part of the sampling container; one sampling pipe in the lower part of the sampling container; and one inert gas pipe communicated to the sampling container. The coal slurry reactant sampling device is accurate and reliable in sampling, convenient and safe in operation, and can sampling repeatedly.

A soil sampling system includes a rig for driving a drive casing, a sample barrel, and sample liners simultaneously into soil to be sampled. The rig includes mechanisms for driving the casing, barrel, and lining in three modes: hydraulic hammer, continuous pressure, and vibration. The three drive mechanisms can be operated singly or in any combination. After the casing, barrel, and liners are advanced a selected depth into the soil, the barrel and liners are removed. The drive casing remains in the soil. New sample liners are put into the sample barrel, and an inner rod is attached to the sample barrel. The sample barrel is then replaced into the drive casing, and extensions are attached to the drive casing. The drive casing, including extensions, and the sample barrels, along with sample liners and inner rod, are driven further down into the soil. The rig also includes a winch that can be coupled to the inner rod or sample barrel so that the casing and/or barrel (including sample liners) can be retrieved from the drive casing. A clamp system allows the sampler to be hydraulically retracted from the ground when sampling is finished.

The invention relates to an automatic sampling device of a dissolution tester. The automatic sampling device comprises a multi-channel valve group, wherein the multi-channel valve group comprises fivebranches; a power pump is connected with a public channel of the multi-channel valve group; a sampling needle is connected with the first branch of the multi-channel valve group; a dissolution cup isconnected with the second branch of the multi-channel valve group; a sample injection needle is connected with the third branch of the multi-channel valve group; a liquid supplementing groove is connected with the fourth branch of the multi-channel valve group through a liquid supplementing pipeline; the fifth branch of the multi-channel valve group is communicated with external air. According tothe automatic sampling device of the dissolution tester, provided by the invention, the power pump can be communicated with the corresponding pipeline under different conditions; in an automatic sampling process of a dissolution experiment, operation including automatic sampling, automatic liquid supplementing, automatic pipeline emptying, automatic pipeline washing and the like can be rapidly and accurately finished; sampling requirements of pharmacopeia on the dissolution experiment are met; accurate, reliable and efficient sampling is realized, and a condition that a sample is polluted byadjacent sampling points is avoided.

The invention relates to an apparatus and a method for cropping the ends of or for separating test pieces from rolled strip wound into bundles. An apparatus is disclosed which, by means of an outwardly pivotable bottom roller (2) and guide devices (5, 6, 7, 8, 13, 14) for guiding the strip end to the shears, also makes it possible to process strips which are thicker or of greater firmness and are wound into bundles (10). Furthermore, a method is specified, which allows a reliable sampling and, if appropriate, inspection of the sample from strips wound into bundles, a closed bundle being obtained again after sampling.

The invention discloses a water drill nondestructive sampling method of a cemented filling body. The method comprises the steps: firstly, a wedge-shaped groove is formed in the surface of the cemented filling body, then a cylinder sample is taken in the length direction of the wedge-shaped groove, and finally, the cylinder sample is taken out from the bottom of the wedge-shaped groove. The water drill nondestructive sampling method of the cemented filling body adopts a common tool, takes the sample in the surface of the filling body through the simple operation procedures, has the advantages of nondestructive and reliable sampling, good quality and high efficiency, and solves an industry difficult problem in the field.

Process for vaporizing purge liquid from a cryogenic liquid vaporizer, the liquid containing at least one impurity, in which the purge liquid is withdrawn from a bath of liquid surrounding the vaporizer or resulting from the vaporizer, all of the purge liquid is vaporized in a heater, characterized in that the content of the at least one impurity in at least one portion, or even all of the heated vaporized liquid is analysed and the flow rate of at least one portion, or even all of the heated vaporized liquid is measured.

The invention provides a sampling device and method for environmental monitoring. The sampling device comprises a grip, a telescopic rod connected with the grip and a sampler mounted on the telescopic rod, an opening is formed in the rear end of the sampler, a plurality of pistons are arranged in the sampler, a plurality of water inlets are sequentially formed in the sampler at intervals, and a water inlet cover is arranged at each water inlet; a piston hand wheel and a water inlet cover hand wheel are arranged below the grip, a linkage limiting mechanism is correspondingly arranged behind part of the water inlet covers, and the linkage limiting mechanism is arranged to gradually limit the pistons at intervals when the pistons move from front to back, so that a plurality of independent water storage spaces are formed in the sampler. The sampling device can be used for extracting water samples at a plurality of specified depths at one time, and can be filled with water when sinking to the water bottom, so that the problems that the sampling quality is influenced by bubbles and the like are solved.

The invention discloses an automatic unblocking system and an unblocking method for a sampling hole of a converter vaporization flue. One end of a purging pipeline, one end of a purging driving pipeline, one end of a sampling driving pipeline, one end of a poking needle driving pipeline and one end of a valve group driving pipeline are respectively connected with a nitrogen input pipeline, the other end of the purging pipeline is connected with a sampling pipeline, the other end of the purging driving pipeline is connected with the purging pipeline, the other end of the sampling driving pipeline is connected with the sampling pipeline, the other end of the poking needle driving pipeline is connected with a poking needle, the other end of the valve group driving pipeline is connected with a sampling hole control valve group, the poking needle is opposite to the sampling hole control valve group, and the other end of the sampling hole control valve group is connected with a converter vaporization flue sampling hole; The poking needle, the sampling hole control valve set and the converter vaporization flue sampling hole are located on the same axis, one end of the sampling pipeline is connected with the converter vaporization flue sampling hole, the other end of the sampling pipeline is connected with a PT detection instrument, and the purging driving pipeline, the sampling driving pipeline, the poking needle driving pipeline and the valve set driving pipeline are electrically connected with a control assembly.

The invention discloses an automatic dredging system and method for a converter vaporization flue sampling hole. The automatic dredging system comprises a valve group control pipeline, a dredging device control pipeline, a sampling hole control valve group, a dredging device (6) and a control assembly. One end of the valve group control pipeline is connected with a nitrogen input pipeline, and the other end of the valve group control pipeline is connected with the sampling hole control valve group. One end of the dredging device control pipeline is connected with the nitrogen input pipeline, the other end of the dredging device control pipeline is connected with the dredging device (6), the dredging device (6) is opposite to the sampling hole control valve group in position, the sampling hole control valve group is connected with the converter vaporization flue sampling hole, and the dredging device (6), the sampling hole control valve group and the converter vaporization flue sampling hole are located on the same axis. The valve group control pipeline, the dredging device control pipeline and the nitrogen input pipeline are electrically connected with the control assembly.

The invention discloses an oil-immersed current transformer live-wire sampling device and a sampling method based thereon; the oil-immersed current transformer live-wire sampling device comprises a sampling valve communicated with a current transformer oil tank, the current transformer oil tan is connected with the sampling valve through a connection pipe, the sampling valve is covered with a protective hood, and the sampling valve is completely positioned within the protective hood. The sampling position of the sampling valve is lowered through the connection pipe, and safe and reliable sampling is achieved; through the protective hood, it is effectively avoided that mistaken touch for the sampling valve leads to contamination of the sampling valve or that oil leaks from a port of the sampling valve, and sampling analysis data is more accurate.