48results about How to "Decentralization smoothly" patented technology

The invention discloses a work method of a roller shutter door lock and relates to the technical field of roller shutter doors. The method includes the following steps that a roller shutter door motor drives a rotating shaft to rotate, a drive disc and a drive wheel are rotated along with the rotating shaft and drive a driven wheel to rotate; a disc is limited by a cylinder body and cannot rotate, and the driven wheel pushes the disc in the length direction of the rotating shaft; the end, provided with a roller, of a clutch lever moves towards a driven disc, so that the drive disc and the driven disc are close to each other and jointed, and at the moment, the driven wheel does not rotate along with the drive wheel; the driven disc rotates and coils an inhaul cable, a lock core is separated from a roller shutter door, and the roller shutter door lock can complete operation of unlocking or locking the roller shutter door independently. The roller shutter door lock has the advantages of being easy to operate, good in antitheft effect and the like.

The invention discloses an electric ignition layered gas injection valve and a layered electric ignition pipe column. The electric ignition layered gas injection valve comprises an outer pipe extending lengthwise, an inner pipe and a liner pipe. A first gas outlet hole is formed in the outer pipe; the inner pipe is slidably sleeved with the outer pipe, connected with the outer pipe through a shearpin, and a second gas outlet hole is formed in the inner pipe; the inner pipe is positioned on the first position where the second gas outlet hole and the first gas outlet hole communicate by the shear pin; the liner pipe is sleeved with the inner pipe; when the inner pipe is located on the first position, the liner pipe can drive the inner pipe to move to the second position under pushing of anelectric ignition device; and when the inner pipe is located on the second position, the second gas outlet hole does not communicate with the first gas outlet hole, and the liner pipe and the inner pipe are separated. According to the electric ignition layered gas injection valve and the layered electric ignition pipe column, a plurality of oil layers can be ignited in the fireflooding process.

The invention discloses a cage connection device suitable for sand control or well wall support of fishbone branch wells and its application method. The structure of the cage connection device is as follows: the boom passing through the drill bit is fixed on the suspension ring; the two sides of the lower end of the boom passing through the drill bit are respectively provided with rod bodies; the top end surface of the suspension joint forms a number of grooves I, and each groove I Blind hole Ⅰ and blind hole Ⅱ are respectively provided on the two inner walls of the shaft. The inner diameter of blind hole Ⅰ and blind hole Ⅱ is slightly larger than the outer diameter of the rod body, and the depth of blind hole Ⅱ is greater than that of blind hole Ⅰ; ;By the cooperation between the rod body and the blind hole I and blind hole II, the connection between the boom of the drill bit and the suspension joint is realized; when the spring is compressed, the rod body can escape from the blind hole I; the lower part of the suspension joint is connected to the easy-drilling pipe . All the components of the cage connection device of the present invention are composed of easy-to-drill materials. On the premise that the strength meets the requirements for safely hanging the sand control pipe string, the screen pipe can be easily released after it is put in place, and can be quickly drilled through and broken by the PDC drill bit to continue drilling.

The invention discloses a high-temperature blast hole temperature measuring device and a high-temperature blast hole temperature measuring method. The device includes an infrared temperature sensor, a cable, an air purging device, a heat-resistant pipe, an air pump, a display instrument and a heavy object. One end of the tube is connected to the air pump, and the other end is connected to the air purger. The infrared temperature sensor is fixed in the air purger, and the position of the infrared emission port of the infrared temperature sensor corresponds to the position of the purging port of the air purger. One end of the cable is connected to the display, the other end passes through the heat-resistant tube and is connected to the infrared temperature sensor, and the weight is fixed under the air blower. The invention adopts an infrared temperature sensor to improve the temperature measurement response time, and can quickly scan and measure the temperature of the hole wall at different depths of the blast hole, and continuously fill the heat-resistant tube with air through the air pump to monitor the cable and the infrared temperature sensor. To cool down, the dust or water vapor in the blast hole can be blown away by the air purger to measure the wall temperature of the blast hole.

The invention relates to the technical field of bridge lower structure construction, in particular to a jacket positioning device. The device comprises a guide frame, at least one locking female head, a locking male head, a vertical anti-collision support and a front anti-collision mechanism, wherein the guide frame is arranged on one side of a jacket, the at least one locking female head is arranged on the other side of the guide frame, each locking female head matches the corresponding locking male head, each locking female head is arranged on one side of the jacket to be connected, each locking female head is provided with the corresponding vertical anti-collision support, the vertical anti-collision support is arranged on the guide frame, located above the locking female heads and arranged on the outer sides of the locking female heads in a sleeving mode, the jacket to be connected is prevented from colliding with the locking female heads from the upper portion, each locking female head is provided with the corresponding front anti-collision mechanism, each front anti-collision mechanism is arranged on the outer side of the corresponding locking female head in a sleeving mode and connected with the guide frame, and the jacket to be connected is prevented from colliding with the locking female heads in the horizontal direction. The device can effectively solve the problem that in the prior art, a jacket is prone to collision and damage in a lowering process.

The invention discloses a low-specific-gravity high-performance wall protection mud material for long horizontal freezing drilling in silty clay and a preparation method. The mud material is composed of basic components and externally mixed components. The control index of the mud material is: the water loss of the mud <15mL, mud specific gravity <1.05, mud viscosity 20s~50s. The preparation method comprises the following steps: (1) determining the control index, (2) screening the basic formula, (3) testing and testing, (4) orthogonal testing, (5) testing and checking, (6) determining the basic component and the externally mixed group The distribution ratio. The wall protection mud material of the present invention forms a mud cake at the interface between soft and hard formations, which well supports the stability of the borehole wall, and controls the offset of the interface between soft and hard formations to keep it within 3‰. After the drill pipe is pulled out, the mud, mud cake, air and the borehole form an underpressure balance system in the borehole. This balance system can maintain stability for a long time, maintaining the stability of the borehole for more than 9 hours, and realizing the smooth release of the frozen pipe.