33results about How to "Increase sampling depth" patented technology

The invention relates to a sampling device for soil monitoring, and belongs to the technical field of soil monitoring. The sampling device for the soil monitoring comprises a machine frame; sliding rails are mounted in the machine frame; a sliding plate is arranged on the sliding rails; the sliding plate is provided with a hydraulic driving device and a rotating motor; a screw rod with a drill bitis mounted at the lower end of the rotating motor; an annular post is mounted outside the screw rod; a cutter head is mounted at the lower end of the annular post. According to the sampling device for soil monitoring, the pressure of the annular post entering soil is greatly reduced by matching the screw rod with the drill bit with the rotating motor and the hydraulic driving device; the samplingspeed and the sampling depth are improved; through an electric telescopic rod and a sampler which is rotationally connected with the electric telescopic rod, the required soil at various depths can be taken out at one time conveniently; the sampling error caused by mutual contaminating of the soil at different depths is avoided; and the work efficiency is improved.

The invention relates to a submarine sampling device and aims at providing a bolt-free gravity piston type long cylindrical sediment fidelity sampler. The sampler comprises a fidelity sampling barrel, a stream guidance cabin, an accumulator, a hermetic cabin, a movement weight mechanism, a hanging bracket, and the like. The stream guidance cabin is sleeved with the upper end of a fidelity barrel body; and the hermetic cabin is movably sleeved with the fidelity barrel body and separated from the stream guidance cabin. The hanging bracket comprises plywood, a piston, a main cable and a hermetic cabin cable, wherein the main cable penetrates through the plywood and connects with the piston positioned in a bushing; and the hermetic cabin cable penetrates through the plywood and connects with the upper end of the hermetic cabin. The bolt-free gravity piston type long cylindrical sediment fidelity sampler based on sampling caliber optimization increases the sampling depth. The sampler scheme of a bolt-free mechanism avoids sample pressure maintaining failure caused by the miswork of a bolt. Based on a water flushing technology on the wall of a cofferdam, the sampler enhances the sealing property of the lower seal of the lower hermetic cabin.

The invention discloses a cyclone type jetting drill bit. The drill bit comprises a drill bit body with a hollow cavity, wherein the middle of the end part of the drill bit body is provided with a sampling port communicated with the hollow cavity, the end part of the drill bit body is provided with a cutting tool bit used for drilling and sampling, the position on the wall of the drill bit body, which is close to the cutting tool bit, is provided with an eddy-flow jetting hole communicated with the hollow cavity, and the central line of the eddy-flow jetting hole and the axis of the drill bit body are mutually staggered in the space. According to the cyclone type jetting drill bit disclosed by the invention, coal dust is pressed into a sampling passage by jetting out rotary compressed air so as to achieve the aim of quickly and accurately carrying out the operation of sampling; and moreover, the sampling time can be saved, the sampling time is reduced to about 2 to 5 minutes, the increase of the sampling depth reaches more than 100 meters, the working efficiency and the safety of the sampling of a coal mine are enhanced, and the disaster accident of gas is lowered.

The invention discloses a grain quantitative sampler which comprises a body. A negative-pressure device, a sampling chamber, a splitting device and a sampling mechanism are arranged on the body. The negative-pressure device is connected to the sampling chamber and used for generating negative pressure in the sampling chamber, the wall surface of the sampling chamber is provided with a sampling port connected with a sampling tube, the bottom of the sampling chamber is provided with a discharging port, and a sampling switch mechanism is arranged at the discharging port which is connected to thesplitting device. An outlet of the splitting device is connected to the sampling mechanism, and the sampling mechanism comprises a sampling hopper for sample receiving and a weighing device for bearing the sampling hopper. The grain quantitative sampler has advantages that sampling is performed by vacuum suction, sampled samples are proportionally split through the splitting device and weighed inreal time through the weighing device, sampling quality of each layer of grains can be accurately controlled, and sample representativeness is guaranteed.

The invention discloses an anti-sloughing hole reverse circulation sampling bit comprising a bit body with an inner cavity and a hollow annular ejector arranged in the bit body. One end of the bit body is provided with inner, middle and outer cutter heads from interior to exterior, a sampling port is arranged on the inner cutter head, a clearance groove used for slagging is arranged between the middle and outer cutter heads, an annular ejector is fixedly arranged in the cavity of the bit body and forms an annular cavity with the inner wall of the bit body, and the sampling port is communicated with the hollow annular ejector; the bit body is provided with an ejecting hole correspondingly, and the ejecting hole is communicated with the annular inner cavity. The bit is easy to operate and is capable of sampling from soft and outburst seams rapidly and accurately, the sampling time is saved, the sampling depth is increased, the mine sampling efficiency and safety are improved, and the rate of gas accidents is decreased.

The invention relates to a sampling calculating method of tobacco-planting soil acidification degree. The method includes steps of (1), confirming a testing point; (2), excavating a sampling pit; (3), confirming a sampling level; (4), sampling every sampling layer; (5), testing pH value of the soil sample; (6), determining every level of sample above the middle part of the pit as the sample of a plough layer; taking the sampling layer in the middle part of the pit as the sample of the transition layer, and taking samples as the reference data; taking the sample of every sampling layer beneath the middle part of the pit as a bottom layer sample; (7), calculation of acidification layer. Through classifying the sample of every soil layer, the influence ranges of ecological condition, farming, fertilizing and other change factors on pH value are confirmed, the influence range of soil mother rock, vegetation type and other fixing factors on the pH value are determined, thereby providing exact basis for the calculation of the acidification layer. Compared with the regular method such as sampling calculating method or testing method in calendar years, the application method is more exact, and more capable of preventing and controlling soil acidification.

The invention discloses a helical dual-tube tailing area slag sampling device and a method thereof. The sampling device comprises an outer tube and an inner tube, wherein the outer tube main body is an outer tube body; an outer wall of the outer tube body is provided with a thread; an outer side of an upper part of the outer tube body is provided with a beeline handle; the beeline handle is provided with an outer tube fixing hole, and matched with an L-shaped fixing bolt; a lower part of the outer tube body is provided with a sampling door opening and a conical head; the inner tube main body is an inner tube body; an outer side of an upper part of the inner tube body is provided with a cross-shaped handle; the cross-shaped handle is provided with an inner tube fixing hole; the side edge ofthe lower part of the inner tube body is provided with a sampling door; and the sampling door is connected with the inner tube body through a spring hinge. The helical dual-tube tailing area slag sampling device has the advantages of simple structure, low cost, durability, convenience in carrying, high sampling efficiency, wide applicability and the like.

The invention discloses a sampling device. The sampling device comprises a main sampling pipe and at least one accessory sampling pipe; the accessory sampling pipe and the main sampling pipe are connected via a locking assembly; the locking assembly comprises a locking female joint and a locking male joint; the locking female joint is provided with a locking groove, and the locking male joint is provided with a locking key capable of realizing matched clamp connection with the locking groove; the locking assembly also comprises a locking buckle used for preventing slipping of the locking key from the locking groove. According to the sampling device, the sampling device is provided with the locking assembly, so that when the main sampling pipe and the accessory sampling pipe are inserted into a grain heap, the whole sampling device is capable of realizing anticlockwise and clockwise moving, losening of the connection part of the main sampling pipe with the accessory sampling pipe is avoided, sampling depth of the sampling pipes are increased effectively, downward movement efficiency of the sampling pipes in sampling process is increased, the reliability of the connection part of the sampling pipes is improved, the service life of the sampling device is prolonged, and rapid connecting and detaching of the main sampling pipe with the accessory sampling pipe can be realized, and sampling time is shortened.

The invention discloses a D-PMU device-based power distribution network fault accurate positioning method. The method comprises the steps of 1) establishing a fault diagnosis model according to a D-PMU configuration condition of a power distribution network; acquiring and uploading measurement data based on real-time communication of the D-PMU; 2) arranging measurement data before and after a fault occurs; judging whether T-connection lines exist at the two ends of the fault position or not, if yes, executing the step 3), and if not, executing the step 4); 3) identifying a faulty line and a non-faulty line, and combining the measurement information of the non-faulty line; 4) solving the power distribution network fault diagnosis model by using the measurement data before and after the fault, and 5) performing calculating and sorting to complete fault positioning. According to the power distribution network fault diagnosis method, the position of the fault is obtained, the accurate position of the fault of the power distribution network is determined, and the requirements in practical application are met.

The invention belongs to the technical field of sediment sampling equipment and relates to an undisturbed high-frequency vibration sediment sampler. The sampler comprises an outer bin; an inner bin is arranged on the upper portion of the interior of the outer bin; an eccentric motor is installed in the inner bin; the output end of the bottom of the eccentric motor is connected with an inner pipe; an outer pipe is arranged on the outer side of the inner pipe; a sampling mechanism is installed at the bottom end of the inner pipe; side holes are formed in the outer walls of the two sides of the outer bin; fixing rods are detachably connected to the outer walls of the two sides of the inner bin; a base is installed at the bottom of the outer bin; each fixing rod is of an L-shaped structure; The outer bin of the undisturbed high-frequency vibration sediment sampler can perform high-frequency vibration, so that a continuous sediment sample is obtained; undisturbed collection of seabed sediments is ensured; the internal sampling mechanism extends into the sample to perform sampling, so that the sampling depth can be increased, the structure of the sediment sample is prevented from being damaged, and the sediment sampling quality is improved.

The invention provides a slurry field sampling device in a goaf filling process and a use method thereof, and belongs to the technical field of mine filling sampling. The device comprises an outer sleeve, an inner sleeve, a cover plate and L-shaped steel plate supports; the outer sleeve is provided with an outer sleeve guide rail, the inner sleeve is provided with an inner sleeve sliding rail and a sliding groove, the inner sleeve sliding rail is aligned with the outer sleeve guide rail, the inner sleeve is inserted into the outer sleeve, the cover plate can be inserted into the sliding groove, and the outer sleeve is fixed through a pair of L-shaped steel plate supports and a bottom plate fixing expansion bolt. The device adopts a separated sleeve structure, can be flexibly assembled according to sampling requirements, and is simple in structure and quick to mount. The inner sleeve can be reused, the cost is reduced, the outer sleeve is reserved in filling bodies and can serve as a reinforcing structure, and the overall strength of the filling bodies is improved. The sampling depth is large, typical representativeness is achieved, and the sampling success rate is high. According to production requirements, filling slurry can be taken out in situ, and filling bodies of different ages can also be taken out, so that different production inspection and test requirements are met.

The invention discloses an undisturbed deep-scale sampling system for a seabed sedimentary layer, which comprises a sampling pipe mechanism, and the sampling pipe mechanism comprises a guide floral pipe, a heavy hammer, a sampling pipe, a lining pipe, a petal-type elastic sheet assembly and a knife edge; the lowering and recycling mechanism comprises a mooring rope connected with the heavy hammer; and the lowering and recycling mechanism drags the heavy hammer through the cable to lower the sampling pipe mechanism to the seabed and then release the traction force. The undisturbed deep-scale sampling system for the seabed sedimentary layer is simple and reasonable in structure and convenient to install and use. During sampling, disturbance to seabed sediment samples is small, and sample disturbance can be reduced or non-disturbance sampling can be achieved. The sampling depth is large, the rod-shaped heavy hammer strikes for 1-2 times during sampling each time, the sampling length can be controlled to be about 1m at one time, and the sampling depth can reach 40m after the operation is repeated. The length of the sample can be automatically calculated through the meter recording assembly. And large-area popularization and application are worthy.

The invention belongs to the technical field of integrated circuits, and particularly provides an FPGA logic test method and device. The method comprises the following steps: based on a to-be-tested signal bandwidth and a sampling depth of a to-be-tested logic source code, determining a required resource storage amount required for testing the to-be-tested logic source code; if the required resource storage amount is smaller than the residual storage amount of the FPGA on-chip memory, determining that the storage mode is on-chip storage, otherwise, determining that the storage mode is off-chip storage, wherein the memory corresponding to the on-chip memory is an FPGA on-chip memory, and the memory corresponding to the off-chip memory is an external memory; and testing the to-be-tested logic source code based on the kernel of the embedded logic analyzer, and storing sampling data generated by the test into a corresponding memory according to the determined storage mode. According to the invention, the problem of low sampling depth caused by an internal storage space during FPGA testing can be avoided, so that the sampling depth during testing is effectively improved.

The invention discloses engineering geology deep soil sampling equipment, and relates to the technical field of soil sampling, the engineering geology deep soil sampling equipment comprises a support, a sampling straight pipe is arranged in the middle of the support, the outer end of the sampling straight pipe is respectively connected with a moving frame and a shell from inside to outside, and the bottom end of the sampling straight pipe is provided with a base; the lower end of the base is slidably connected with a plurality of evenly-distributed soil scraping supports, the soil scraping supports can move to the outer side of the base in the direction away from the center position of the base, a vertically-through inclined groove is formed in the middle of each soil scraping support, and a soil scraping tool with the bottom end extending to the lower side of the corresponding soil scraping support is arranged in each inclined groove. The soil scraping device has the technical effects that the soil scraping support in an unfolded state can bear downward acting force applied by soil above the soil scraping support, so that upward counter-acting force borne by the soil scraping support in the soil cutting process is resisted, and the situation that equipment jumps and inclines due to the counter-acting force in the soil cutting process is avoided.

The invention discloses deep sampling equipment for geological detection, relates to the technical field of geological detection sampling detection, and mainly solves the problems that an existing geological detection sampling device is complex in structure, large in sampling rod size and inconvenient to carry. The device comprises a fixed column; a step table is arranged on the fixed column; a damping spring is arranged on the step table; a mounting plate is mounted on the fixed column; the mounting plate is connected with a damping spring through a locking nut; a motor is arranged on the mounting plate; the motor is connected with the output shaft; a driving gear is mounted on the output shaft; the driving gear is meshed with the driven gear; the driven gear is connected with a limitingframe; the limiting frame is connected with a connecting frame through a connecting column; the connecting frame is arranged to be in an L shape; a transmission rod is inserted into the driven gear; the transmission rod is connected with an extension rod; and the extension rod is connected with a drill bit. Large-depth sampling is achieved through the transmission rod, the extension rod and the drill bit.