30results about How to "Unblocked" patented technology

A mechanical completion string running tool is applied to running of a completion string for oil and gas well drilling. The lower end of an upper joint is in threaded connection with a guide sleeve; a minor-diameter cylindrical tube at the upper end of a rotating mandrel is placed inside a central hole at the lower end of the upper joint; a compression spring is sleeved at the upper end of the rotating mandrel; a plane bearing sleeve at the lower end of the rotating mandrel is located on the outer wall of the minor-diameter cylindrical tube of the rotating mandrel; an annular step is arranged on the inner wall of the guide sleeve, and an annular shaft shoulder which protrudes outwards at the upper end of a major-diameter cylindrical tube of the rotating mandrel is matched with the annular step on the inner wall of the guide sleeve; the major-diameter cylindrical tube of the rotating mandrel is arranged inside the guide sleeve; a helical groove is arranged on the outer wall of the major-diameter cylindrical tube of the rotating mandrel, and a guide pin is fixed inside a screw hole of the guide sleeve; and the lower end of the rotating mandrel is connected with a transitional short connector and a casing shoe with cutting teeth. The mechanical completion string running tool has the advantages that the completion string is lifted and put down to remove obstructions for the string in the process of removing obstructions for descending the string.

The invention relates to a monitoring system for debris flow disasters along railway tracks. The alarm system comprises a debris flow information acquisition system, a debris flow information analysis system and an alarm system. Alarm signals and / or intelligence information are / is emitted in one or more modes under the condition that the debris flow information analysis system determines occurrence of debris flow and / or grades of debris flow disasters.

The invention relates to a traditional Chinese medicine formula for treating male infertility. The traditional Chinese medicine formula consists of 16 traditional Chinese herbal medicines including male silkworm moth, baked pangolin scales, tortoiseshells, agilawood, antler tablets, unprocessed rehmannia glutinosa, dogwood, cistanche, herba epimedii, peony bark, golden cypress, semen plantaginis, lycium barbarum, paeonia lactiflora, yam rhizome and poria cocos. Pharmacology experiments show that the traditional Chinese medicine formula has the effects of nourishing yin and clearing heat, tonifying kidney and generating seminal fluid, tonifying spleen and removing dampness as well as activating blood and removing stasis, testis, epididymis seminal vesicle and prostate can be nourished, the amount of sperms is increased, and the testicular spermatogenic function is covered; the traditional Chinese medicine formula has a remarkable effect in treating kidney-yin deficiency type semen quality abnormity and semen volume abnormity, immune infertility and unknown cause infertility.

The invention discloses a site-establishing method for laser trackers used for digital measurement of an aircraft assembly fixture. The method includes a step(1) of determining site establishing standards; a step(2) of inputting parameters of the laser trackers; a step(3) of calculating a two-dimensional bounding box of a support plane; a step(4) of obtaining an initial searching input point; a step(5) of reading an optical target point and making judgments of light beam distances and included angles; a step(6) of conducting interference checking; a step(7) of obtaining minimum site number through a combination of a clustering algorithm and a simulated annealing algorithm; a step(8) of increasing the height of the fixture or the trackers and turning to the step (3) for executing searching in the next layer if the obtained minimum site number is zero and turning to a step(9) if the obtained minimum site number is not zero; and the step(9) of loading the laser trackers to the optical site-establishing positions. Therefore, minimum site numbers of different optical target points that can be measured are obtained. Through adoption of the site-establishing method for the laser trackers used for digital measurement of the aircraft assembly fixture provided by the invention, site-establishing positions of the laser trackers can be positioned quickly. A problem of optical path interference caused by that workers establish sites by experience in practical work is avoided effectively and a problem of measurement precision decrease caused by multiple times of station transfer is also avoided.

The invention discloses a transparent and air-permeable full-coverage protective headgear. The invention adopts the full-coverage transparent cover, which facilitates the work of the user, prevents the line of sight from being blocked when wearing it, and improves work efficiency. The protective shell cover covers the full-coverage transparent cover when the hood is not in use, so as to protect the full-coverage transparent cover from damage and improve the service life of the present invention. It is equipped with damping material, which not only facilitates the opening and closing of the protective case cover, but also does not reset itself after the protective case cover is opened and closed, avoiding the sight being blocked and affecting the work due to the reset of the protective case cover during use, and improving the use efficiency and use of the hood Convenience, the invention is an independent individual that can be used with different protective clothing. The hood and neck protection provided are sealed with strong magnetic suction, which facilitates the separation and sealing connection of the hood and protective clothing, and facilitates the putting on and taking off of the hood and protective clothing. , improve the efficiency of putting on and taking off.

The present invention provides a multi-zone marine environment comprehensive simulation test apparatus. According to the multi-zone marine environment comprehensive simulation test apparatus, a sample frame is arranged in the main body of an environment test bin, is connected to a power system, and is driven to rotate and lift by the power system; and in the power system, the positions of a horizontal contactor and a lifting motor matched to the horizontal contactor are fixed, a vertical contactor, an inner transmission shaft gear box, an outer transmission shaft gear box, an inner transmission shaft rotation motor and an outer transmission shaft rotation motor act along with the lifting of an inner transmission shaft and an outer transmission shaft, the an inner transmission shaft gear box, the outer transmission shaft gear box, the inner transmission shaft rotation motor and the outer transmission shaft rotation motor are matched to the vertical contactor, the outer transmission shaft is connected to the sample frame, and the inner transmission shaft is connected to a coaxial reverse rotation screw propeller. According to the present invention, the rotation and the lifting of the inner transmission shaft and the outer transmission shaft are controlled by the motor matched to the inner transmission shaft and the outer transmission shaft, such that the synchronous lifting and the separated rotation are achieved, and the sample frame and the coaxial reverse rotation screw propeller are respectively driven; and by combining the atmospheric environment simulation system and the solution environment simulation system, the automatic control and simulation test of the multi-zone marine environment can be achieved while a variety of test functions are integrated, such that the rapid test and the effective evaluation of the corrosion and the aging performance of the material in the tropical marine environment can be met.