43results about How to "Realize safe operation" patented technology

The invention provides a CP III plane net measuring method. The method includes the steps that firstly, a total station is erected between two CP III points of a left line, CP III prisms are inserted in the CP III points for measurement, wherein each of a front line, a rear line, the left line and a right line of the total station is provided with n pairs of CP III points, namely 2n CP III points in total; secondly, after measurement of the station is finished, the most tail m prisms of the left line and the most tail m prisms of the right line are moved to the forefront side in the advancing direction of measurement, the total station is moved to the right line from the left line and advances to the position between a pair of spaced CP III points of the right line, a station is set again for measurement, and the total 2n CP III points in n pairs in each of the front line and the rear line are measured; thirdly, after measurement of the station is finished, the most tail m prisms of the left line and the most tail m prisms of the right line are moved to the forefront side in the advancing direction of measurement again, the total station is moved to the left line from the right line again and advances to the position between a pair of spaced CP III points of the left line, a station is set again for measurement, and the total 2n CP III points in n pairs in each of the front line and the rear line are measured; and the steps are repeated in this way, so that measurement of each CP III point is achieved. By the adoption of the measuring method, the requirement for the measuring accuracy of a rail can be met, and observation can be convenient.

The invention discloses a method and a system for predicating the collision possibility of a plurality of stackers-reclaimers in a stack yard as well as anti-collision control method and system. The method for predicating the collision possibility of the plurality of stackers-reclaimers in the stack yard comprises the following steps of: detecting the position information of a mobile station arranged in the large-machine rotary centre of each stacker-reclaimer and the large-arm head centre of the stacker-reclaimer based on a reference station; determining the minimum distance between the large arms of any two stackers-reclaimers in the plurality of stackers-reclaimers according to the detected position information of each stacker-reclaimer; and judging the collision possibility of the large arms of two stackers-reclaimers according to the minimum distance. Therefore, the invention can judge the collision possibility between the stackers-reclaimers so that operators can further process according to the possibility.

The invention provides a temperature-responsive self-degradation temporary plugging agent and a workover method, belonging to the technical field of oil and gas exploitation. Components comprising the following mass percentages: Components comprising the following mass percentages: 4% to 6% of vinyl-containing monomers, 0.1% to 1% of crosslinking agents, 0.1% to 1% of initiators , 0.05% to 0.5% of the degradation catalyst and the rest of the water, the cross-linking agent is polyethylene glycol diacrylate, the degradation catalyst is 2-amino-2-methyl-1-propanol or ethylene glycol Alcoholamine. In the present invention, polyethylene glycol diacrylate is used as a crosslinking agent, and 2-amino-2-methyl-1-propanol or ethylene glycol amine is used as a degradation catalyst. Maintain strength for a period of time, and then as time goes by, polyethylene glycol diacrylate will fail to cross-link under the action of a degradation catalyst, degrading the gel temporary plugging agent into a linear polymer, and finally reduce the viscosity to realize self-degradation of the gel .

The invention discloses an automatic assembly device for assembling a die-locking oil cylinder. The automatic assembly device comprises a rack, wherein one end of the rack is detachably connected with the die-locking oil cylinder; the other end of the rack is provided with a feed mechanism for assembling a pull rod of the die-locking oil cylinder; the feed mechanism comprises a slide mechanism slidably connected with the rack; the slide mechanism is controlled by a drive mechanism which is arranged on the rack; and the pull rod is fixed on the slide mechanism. Slide of the slide mechanism on the rack is realized through the drive mechanism, thus assembly work for the pull rod of the die-locking oil cylinder fixed on the rack is realized; and the existing manner of enabling the pull rod to penetrate through the die-locking oil cylinder by virtue of oblique-pulling of a travelling crane and pushing-pulling of a forklift is replaced by the manner, thus a safe operation in assembly for the pull rod of the die-locking oil cylinder is realized, the labour is reduced, and the effect of increasing the working efficiency is achieved.

The invention provides a multifunctional forestry wood cutting device, which includes a mobile platform, a support frame, a cutting device and two sets of clamping devices; the support frame is supported by the support device; the mobile platform passes through both sides of the support frame, and The drive moves along the length of the support frame; the cutting device includes a first motor and two synchronous pulleys; the two synchronous pulleys are respectively connected to the lower end of a first frame plate through a rotating shaft, and are synchronized by a metal belt; the metal belt A plurality of small sawtooths are evenly welded on the surface; each set of clamping devices includes two opposite jaws; the two clamping jaws of each set of clamping devices are respectively set Side; the installation platform is erected under the slide table through the lifting device, and is driven to move up and down by the lifting device; the curved splint is driven to expand and contract through the telescopic device. The device realizes the automatic cutting of wood, and can guarantee the stability and accuracy when cutting wood.

The invention discloses a data processing method and system based on downhole engineering parameter evaluation, and relates to the technical field of oil and gas exploitation; comprising the steps of: using a near-drilling sensor to obtain real-time drilling pressure, rotational speed, torque, displacement, and drill bit vibration in different time periods characteristic parameters, and send them to the control center to process the parameters, store the processed parameters in the register and use the extreme value search algorithm to establish an evaluation model for evaluation and analysis, establish a historical data scatter diagram through the evaluation model and comprehensive drilling experience, and judge the underground work. and feed back to the downhole drill bit. The invention can establish an evaluation model to evaluate and analyze the downhole working conditions by reading parameters such as drilling pressure, rotational speed, torque, displacement and bit vibration in the drilling process in real time, overcomes the hysteresis of uphole evaluation and analysis, and improves drilling efficiency. The safety and drilling efficiency are improved, and the drilling cost is reduced.

The invention discloses a blowout preventer of a rod type defueling pump. The blowout preventer comprises a coat of which two ends are provided with external taper threads and internal taper threads respectively, and is characterized in that: a positioning sleeve is fixedly connected in the coat, and the lower end of the positioning sleeve is closed and the side wall of the positioning sleeve is provided with an oil inlet port; the upper end of the positioning sleeve is provided with a bayonet pin connecting hole on which a hook-shaped bayonet pin is assembled; a cylindrical blowout prevention sliding sleeve is assembled in the positioning sleeve; the outer peripheral face of the blowout prevention sliding sleeve is provided with a symmetrical curve sliding chute; a pin head of the hook-shaped bayonet pin is inserted in the curve sliding chute; a compression spring is assembled between the blowout prevention sliding sleeve and the positioning sleeve; the upper end of the blowout prevention sliding sleeve is provided with an internal tapered unidirectional claw and a piston connecting plug; and the lower end of the piston connecting plug is provided with an external tapered unidirectional claw matched with the unidirectional claw on the upper end of the blowout prevention sliding sleeve. The blowout preventer is applicable to various defueling pumps, has a simple structure and convenient operation, and realizes safe operation and good blowout prevention effect.