82results about How to "Stability has no effect" patented technology

A stand column supporting fabric shade type dryer comprises a hot air generator, an air outlet shed provided with an air outlet, a stand column, a fabric shade, a longitudinal positioning device arranged on the stand column and spaced from the air outlet shed for a certain distance, and a piece-shaped isolation unit positioned above a lower bottom surface, made of a flexible material and provided with an air circulation part, wherein the peripheral edge of the isolation unit is connected to the longitudinal peripheral surface of the fabric shade; a through hole is formed in the middle of the isolation unit, and penetrates the stand column, and the middle part is positioned on the longitudinal positioning device; a drying room is arranged between the isolation unit and a top surface; and an isolation room is arranged between the isolation unit and the lower bottom surface. At the same time of providing the safe drying room, the peripheral edge of the isolation unit is collided by legs of an operator body to have no influence on stability maintenance of the dryer and to have no harm to collided skin surfaces of the operator body; and the isolation unit made of the flexible material can be rolled to various shapes along with the fabric shade, so that the packaging volume is basically not influenced; and the dryer further has the convenience in dismounting.

The invention discloses a self-adaptive ship-intercepting method. The method has the following advantages that: the method overcomes the problem that because buoys and intercepting cables can be pressed into water by ships in the past, the anti-collision intercepting facilities can fail; moreover, because buoys and intercepting nets normally horizontally float on the water surface and the lengthsof the buoys and the intercepting nets do not have affection on the stability of the whole system, the lengths of both the buoys and the intercepting nets are not limited, thereby the intercepting effect is ensured, and moreover, when the intercepting system used in the method normally horizontally floats on the water surface, sight on the sea surface cannot be affected; in addition, the intercepting system used in the method has the advantages of low construction cost, high economical efficiency, long service life and convenient replacement and maintenance; and moreover, the method can be flexibly transported to different places for use, and can change the arrangement position of the intercepting system.

The invention discloses an integrated multi-axis synchronous motion control system and a synchronous control method. The control system includes a feedback sampling module and an active module, the feedback sampling module is used to sample the operating current and operating position of the multi-axis servo motor, the main control module includes a SoC system, and the SoC system receives the feedback The sampling results of the sampling module are used for the feedback position detection and calculation of the multi-axis servo motor, the feedback current detection and calculation, and the realization of multi-axis synchronous current loop control, multi-axis timing synchronous scheduling and multi-axis response synchronous control. The invention solves the problem of poor synchronization performance, high cost, low degree of autonomy of core technology, non-whole-process timing-level synchronization, poor response-level synchronization, serious impact on system stability, low versatility, and computational complexity of existing multi-axis synchronous motion control methods. complicated issues.

The invention relates to cement paste used when a shale gas horizontal well is cemented, and a toughened additive added to the cement paste, and belongs to the technical field of oil-gas well cement engineering. A toughened anti-channeling agent for cement is prepared from butadiene styrene rubber powder and re-dispersible rubber latex powder at the mass ratio of 2 to 1 in a mixing manner, wherein the butadiene styrene rubber powder is subjected to treatment comprising the following steps before use: firstly, preparing a silane coupling agent solution with the mss percent content being 1.5%; adding butadiene styrene rubber powder, standing for 24 hours, and then filtering; and drying in the sun, wherein the system is stable in performance after the cement paste is prepared; the thickening time is easy to adjust; the water loss is smaller than 30ml; free fluid with an inclination angle of 45 degrees and the difference of densities are 0; the compressive strength at 50 DEG C for 24 hours is greater than 30MPa; the applicable temperature range is 50-120 DEG C; the thickening time is 110-240 minutes; and the toughened anti-channeling agent for cement is added to the toughened cement for cementing the shale gas horizontal well. The cement paste system disclosed by the invention is good in stability, and low in water loss and leakage, and can meet the requirements of multistage fracturing of the shale gas horizontal well on the cement paste system.