18 results about "Ice core" patented technology

The invention relates to an in-situ icicle collection and automatic layered cutting detection device used in a surface water freezing period, during working, a drilling cylinder rotates and descends to cut an ice body to drill icicles, a lifting mechanism lifts the icicles to a cutting station, and a cutting mechanism completes automatic layered cutting of the icicles through a cutting tool bit. The cut ice sample is conveyed to a detection position by the transfer mechanism, and the detection mechanism obtains physicochemical index data of the ice sample in real time through ice sample spraying and sensor analysis. The device integrates four functional modules of drilling, cutting, transferring and detecting, interference caused by sample transportation and laboratory treatment is avoided through a full-process in-situ operation mode, and primitiveness and accuracy of data are ensured. Mechanical disturbance and manual intervention are reduced through automatic operation, original structural characteristics of an ice layer are reserved, and working efficiency and sampling consistency are improved. The device provides reliable technical support for stratified collection of ice columns in the surface water freezing period and scientific research on physicochemical property change of pollutants in the freezing process.

The application discloses a polar drilling hole wall directional coring drill, which comprises a shell, an upper hot melting drill bit, a reverse torsion mechanism, a cable chamber, a control system, a hole positioning mechanism, a supporting mechanism, a reaming mechanism and a coring mechanism, wherein the upper hot melting drill bit is assembled at the top of the shell, the reverse torsion mechanism, the cable chamber, the control system, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism are sequentially assembled in the shell from top to bottom, and the control system is connected with the upper hot melting drill bit, the reverse torsion mechanism, the hole positioning mechanism, the supporting mechanism, the reaming mechanism and the coring mechanism respectively. The application has the advantages that the coring direction can be accurately controlled, the demand of polar scientific research can be met, the drill is provided with the reaming mechanism, the auxiliary time is greatly shortened, the ice core tube can be telescoped to store the ice core in real time, the loss of the ice core is avoided, the drill adopts the modular design, the structure is simple and compact, the burden of polar logistics guarantee is reduced, and the drill is suitable for coring drilling in a harsh environment.

The application relates to the sampling technical field and discloses a portable polar sea ice core rapid sampling device and method, which comprises a positioning frame. The sampling cutting plate is provided with a composite motion, feeds to the ice layer through self-rotation, is more efficient than traditional drilling, and can quickly complete ice core cutting; when the cutting plate is attached, the arc-shaped track automatically separates the bottom of the ice core from the ice layer, avoiding damage caused by secondary separation; meanwhile, when the vertical rod slides to the slope along the arc-shaped guide rail, the thrust drives the synchronous block to move upwards, the sampling cutting plate automatically carries the ice core to separate from the ice surface, realizes overall separation, does not need manual intervention, guarantees the continuity and stability of sampling, reduces manual operation cost, and through cooperation of the composite motion and the automatic structure, the efficiency and reliability of the polar ice core sampling are optimized.

The invention discloses a shear type supporting eccentric wedge for ice layer directional drilling, which comprises a guide mechanism, a driving motor, a supporting mechanism and a control mechanism, the driving motor is assembled at the bottom of the guide mechanism, the supporting mechanism is connected to the lower part of the driving motor, and the control mechanism is assembled in the guide mechanism. The control mechanism is connected with the driving motor and the supporting mechanism and controls the driving motor to drive the supporting mechanism to work. The eccentric wedge has the obvious advantages that the supporting force is strong, and the eccentric wedge is thoroughly prevented from being frozen in the hole. The supporting part can avoid the situation that the coring drilling tool moves downwards and deviates from the coring position due to unstable supporting when deflecting through the eccentric wedge, and an ice core at the designated depth cannot be obtained. A heating wire is arranged in the supporting arm, and the eccentric wedge can be prevented from being frozen in the hole and cannot be lifted out. The repeated coring precision is effectively improved, and in-hole accidents are avoided.

The present invention provides a thermal melting drilling device capable of collecting rock debris in ice holes during drilling, belonging to the technical field of polar ice sheet drilling. It includes an outer pipe, a drill bit body, a waterproof motor, a driving screw, a push rod, a first limit switch, a second limit switch, an upper cover, a drill bit body, a heat insulation liner, a core pipe, a hot water pipe, an electric heating drill bit and a joint; when the core pipe moves up to the upper limit position, the inclined surface of the electric heating drill bit just completely enters the heat insulation liner and blocks the internal channel of the heat insulation liner; when the core pipe moves down to the lower limit position, the inclined surface of the electric heating drill bit just completely exposes outside the heat insulation liner, opening the internal channel of the heat insulation liner. The ice core is used to provide thrust for the rock debris, enabling it to enter the core pipe and fall into the interior of the drilling device under the action of the inclined surface of the electric heating drill bit. The structure is simple, and it can collect the rock debris wrapped in the ice core with high efficiency of rock debris collection.

The present application relates to polar ice layer drilling technology field, disclose a kind of double-layer cutting hot melt chip removal large-diameter ice core coring drill. The drill includes cable suspension and electronic component system, melt chip pump suction system, anti-torque and driving system and coring system arranged coaxially in sequence;Melt chip pump suction system includes water tank, water suction pump, water suction pipe and melt chip resistance wire, melt chip resistance wire is arranged around the outside of drill bit body in coring system, melt chip resistance wire is electrified and heated during drilling, for cutting the solid ice chip generated in real time hot melt into liquid melt water, water suction pump is used to pump melt water at the bottom of borehole to the inside of water tank for storage by water suction pipe.The present application eliminates the sticking accident caused by the fact that the ice chip is not removed cleanly when obtaining large-diameter ice core from the root, reduces the space occupied by melting the ice chip into water, has the advantages of compact structure, good ice core quality, high drilling efficiency, etc., and is suitable for coring operation in polar, alpine glacier and other scenes.

The present invention discloses a device and method for simulating the eccentric snapping process of ice cores or rock cores. The simulation device includes an operating table, a bracket, a motor, and a control system, wherein the bracket and the control system are both assembled on the operating table, the motor is disposed on the base of the bracket, the output shaft of the motor is connected to a screw, the top end of the screw is pivotally connected to an end cap below the top horizontal plate of the bracket, and the motor can drive the screw to rotate. The method comprises the following steps: step 1, assembling the simulation device; step 2, changing the angle of the snapping device; step 3, tightening the adjustment nut; step 4, bringing the snapping device close to the ice core or rock core; step 5, transmitting the data to a programmable logic controller (PLC); step 6, the snapping device continues to descend at a uniform speed; step 7, displaying a snapping force data curve on a snapping force display; and step 8, determining the quality of the ice core or rock core. Beneficial effects: The device can provide a basis for the design of reverse circulation continuous coring drill tools for polar ice layers and subglacial bedrock layers, as well as for the automatic equal-length snapping of ice cores or rock cores on site.

The application discloses a device for continuous extraction of ice core gas and synchronous collection of water body and a use method. The device comprises a sample containing shell, a sample pushing mechanism is arranged on the closed end of the sample containing shell, a transparent cover is arranged on the open end, and a melting ice part is arranged in the cover. The sample sealing sleeve comprises a transparent soft sleeve, the closed end of the soft sleeve is arranged in the sample containing shell and connected with the sample pushing mechanism penetrating through the closed end of the sample containing shell, and the open end of the soft sleeve extends out. When the cover is buckled with the sample containing shell, the part of the soft sleeve in the sample containing shell forms a sealed cavity containing ice core with the cover. The ice core is moved to the melting ice part under the pushing of the sample pushing mechanism and is melted by the melting ice part. The sample containing shell and the cover are provided with a blowing pipe, a gas sampling pipe and a drainage pipe are arranged on the cover, and the drainage pipe is connected with a water body collecting member. The application realizes continuous extraction of gas samples and synchronous collection of water samples for the whole ice core.

This invention discloses a heat pipe-type insulated sampling drill bit and method for drilling polar ice cores and natural gas hydrates in terrestrial permafrost regions. The drill bit includes a double-walled drill rod, a refrigerant storage chamber, a direct-heating pipe, a spiral heat pipe, and a drill bit. The double-walled drill rod comprises an inner tube and an outer tube with an annular gap between them; the inner wall of the drill rod serves as a core sampler. The refrigerant storage chamber is located at the upper end of the drill rod and is filled with liquid nitrogen; a high-pressure air inlet is located at the upper end of the refrigerant storage chamber. The direct-heating pipe is located at the lower end of the refrigerant storage chamber and is situated within the annular gap of the drill rod. The spiral heat pipe is located at the lower end of the direct-heating pipe and is connected to it; the spiral heat pipe is situated within the annular gap of the drill rod and is filled with Freon. The drill bit is located at the lower end of the drill rod. This invention offers high sample collection efficiency and minimizes disturbance to the original state of ice cores and natural gas hydrates.

The utility model discloses a vortex type airflow ice conveying fixing seat which comprises a straight joint, an ice falling seat, a silica gel ring, an ice quantity shaft, a quick elbow and an ice falling core. When the ice falling device is used, compressed air is fed into the cavity of the ice falling seat through the quick elbow, dry ice enters the rotary V-shaped groove of the ice quantity shaft through the ice inlet groove, and the ice quantity shaft continuously rotates, so that the dry ice is crushed, and crushed ice is driven to enter the cavity of the ice falling seat; the conical seat is provided with the flow guide V-shaped groove, so that part of air flow is guided to directly and intensively rush to the corners of the ice quantity shaft, residual or adhered ice particles are blown off under the action of air pressure, and the falling ice particles are not easy to adhere and are sent out along two sides along with flowing of the air pressure due to the flow guide V-shaped groove, so that compared with an existing ice smoothening seat, the ice smoothening seat is convenient to use. According to the utility model, the phenomena of ice blockage and ice shortage can be greatly reduced. According to the utility model, the accumulation of ice particles is reduced through vortex type movement of airflow, and the risk of ice blockage is greatly reduced.

The utility model relates to the technical field of Sichuan science, in particular to an ice core water isotope continuous extracting and measuring device which comprises an ice core melting component, a defoaming component, an ice core water atomizing and heating component and an ice core water isotope measuring component, the defoaming component is connected with the ice core melting component, the ice core water atomizing and heating component is connected with the defoaming component, and the ice core water isotope measuring component is connected with the ice core water atomizing and heating component; when the isotope in the ice core water is extracted, an ice core only needs to be put into the ice core melting part to be melted, then the ice core is sequentially discharged into the defoaming part and the ice core water atomizing and heating part, the ice core water is subjected to defoaming, atomizing and sublimation treatment, the ice core water is discharged into the ice core water isotope measuring part, and the isotope is extracted and measured. The problems that in the existing ice core water isotope extraction and measurement process, the continuity degree is low, the accuracy is low, and pollution is prone to occurring are solved.

The invention provides a sound velocity modeling method for a small-porosity ice medium, and belongs to the technical field of polar region sea area detection. Comprising the following steps: S1, establishing a relationship between the Young modulus of an ice medium and the porosity in ice under the condition of small porosity; s2, establishing an in-ice longitudinal wave sound velocity and transverse wave sound velocity physical model by using the constitutive relationship; and S3, calculating the sound velocity profile of the ice layer by using the actually measured ice core temperature and salt density data according to the relationship among the temperature, salinity, density and porosity in the ice. Aiming at the problem that the sound velocity of the ice layer is difficult to obtain, the theoretical model of the sound velocity of the ice medium under small porosity is established, and construction of sound velocity distribution of the ice layer is realized.

The invention discloses a shallow ice and snow coring drilling tool, and belongs to the technical field of shallow ice and snow drilling equipment in polar regions and high mountain regions, the shallow ice and snow coring drilling tool comprises a rotary power mechanism and a coring assembly, and the rotary power mechanism is used for providing rotary power to drive the coring assembly to rotate; the coring assembly comprises a power switching part, an ice core pipe and a drill bit part which are sequentially, coaxially and detachably connected from top to bottom. The power switching part is matched with an output end hole shaft of the rotary power mechanism and is fixedly connected with the output end hole shaft through a quick-insertion self-locking pin. The power switching component and the ice core pipe are in hole-shaft clearance fit and are positioned and connected through a threaded pin; and the drill bit part and the ice core pipe are in hole-shaft clearance fit and are positioned and connected through a second bolt. The drilling tool is small in size, small in mass and simple in structure, continuous drilling can be achieved, single-person or double-person transportation and operation can be achieved, the difficulty of polar region and high mountain glacier site transportation and logistics supporting and the technical requirement for personnel operation are lowered, and the structural complexity and the production and manufacturing cost of drilling and coring equipment are lowered.

The invention relates to the technical field of mechanical detection, in particular to ice body strength in-situ rapid detection equipment and a detection method. The method comprises the following steps: obtaining ice body morphological characteristics and ice body structural characteristics corresponding to a target ice body area, and carrying out detection point division and ultrasonic propagation detection to obtain ice body ultrasonic propagation speed data corresponding to a detection point; a corresponding ice core sample is drilled at the ice body detection point, cutting and surface optimization treatment are carried out on the ice core sample, and meanwhile, a compression resistance-shear resistance mechanical strength test is carried out, so that ice body mechanical strength data corresponding to the detection point are obtained; the corresponding ice body ultrasonic propagation speed data and ice body mechanical strength data are repeatedly collected by replacing ice body detection points, an ultrasonic propagation-mechanical strength relation model is established, and meanwhile an ice body strength in-situ distribution diagram corresponding to the target ice body area is rapidly obtained. According to the invention, the high-precision and rapid detection process of the ice body strength can be realized.

The invention provides a frozen sample greenhouse gas collecting device. The method comprises the following steps: replacing headspace by using helium, indirectly unfreezing a frozen sample by using a temperature control water bath interlayer so as to release sealed greenhouse gas, and collecting headspace gas to analyze the greenhouse gas and other original design ideas, and a physicochemical collection device thereof. The collecting device comprises a main body and a top cover, the main body comprises an inner bin, a water bath clamping bin, inner and outer bin fixing columns, a water inlet and a water outlet and the like, the top cover is provided with an inflating and gas discharging / collecting port and is in threaded connection with the upper portion of the main body, and the air tightness is guaranteed through double silica gel ring pads. The device can systematically collect environment sample sealed greenhouse gas such as land ice cover or ocean ice cover ice core, frozen soil layer or sediment and soil collected by artificial freezing. A new method, new data and a new view angle are provided for related research on the composition of the frozen and sealed greenhouse gas, and the device has the characteristics of high-value commercial scientific research new equipment.

The invention discloses a portable drill rod assembled rotary-impact ultrasonic drilling tool system, which belongs to the technical field of high-altitude mountain glacier drilling equipment and comprises a T-shaped grip, at least one assembled drill rod and a rotary power module which are sequentially and detachably connected from top to bottom. The ice core sampling drill bit or the combined impact power module and the rock core sampling drill bit are selected according to a drilling object; a cable bundle is arranged in the T-shaped grip, the assembled drill rod, the rotary power module and the impact power module in a penetrating manner, and the cable bundle comprises a motor driving cable and a piezoelectric driving cable which are respectively used for supplying power to a motor in the rotary power module and transmitting signals to a piezoelectric transducer in the impact power module; the system is powered by an outdoor mobile power supply and is controlled by a controller. The novel drilling system can adapt to the extreme environment of high-altitude mountain glacier, has efficient and low-consumption drilling capacity, and can realize continuous transmission of underground power and signals.

The invention discloses a method and product for estimating density fluctuation characteristics of an ice cover accumulated snow layer based on multi-band ice-penetrating radar echoes, and the method comprises the steps: determining the frequency band of an ice-penetrating radar, and converting the observation value of the ice-penetrating radar echo intensity of the accumulated snow layer of a target region along with the time change into the depth distribution of the ice-penetrating radar echo intensity; establishing an accumulated snow layer density fluctuation characteristic empirical model containing to-be-estimated parameters; fitting depth distribution based on echo intensity to obtain a radar echo average change trend, and determining depth position parameters of the empirical model through least square regression; the method comprises the following steps of: calibrating system parameters in ice-penetrating radar echo forward simulation by combining actual measurement data of an ice core, adjusting undetermined density fluctuation parameters, performing forward simulation on depth distribution of echo intensity, and optimizing undetermined standard deviation parameters and related length parameters in an empirical model by fitting and actually measuring the depth distribution of the echo intensity of the ice-penetrating radar. And combining the depth position parameters to obtain accumulated snow layer density fluctuation characteristics of the target area.

The invention relates to the technical field of sampling, and discloses a portable polar region sea ice core rapid sampling device and method, and the portable polar region sea ice core rapid sampling device comprises a positioning frame. The device is provided with the sampling cutting plate in composite motion, through rotation and feeding to an ice layer, the device is more efficient than traditional drilling, and ice core cutting can be rapidly completed; when the cutting plates are attached, the bottom of the ice core is automatically separated from an ice layer through the arc-shaped track, and damage caused by secondary breaking is avoided; meanwhile, when the vertical rod slides to the slope along the arc guide rail, thrust drives the synchronous block to move upwards, the sampling cutting plate automatically carries the ice core to be separated from the ice surface, overall separation is achieved, manual intervention is not needed, sampling continuity and stability are guaranteed, and the manual operation cost is reduced; and the efficiency and the reliability of polar region ice core sampling are optimized.