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A mine water blocking device
ActiveCN116084999Bensure safetyAchieve water blocking effectUnderground chambersClimate change adaptation
This application provides a mine water blocking device, including a triggering component, a supporting component, a locking component, and a main frame. The triggering component includes a trigger head, a trigger rod, and a counterweight rod. The counterweight rod is sleeved on the outside of the trigger rod, and the trigger rod can move along the inner wall of the counterweight rod. The main frame is hinged to the top of the counterweight rod. The supporting component includes a supporting bone and a movable disc. The supporting bone is connected to the main frame, and one end of the supporting bone is hinged to the edge of the movable disc. The movable disc is sleeved on the outer wall of the counterweight rod. The locking component is disposed inside the movable disc. The movement of the trigger rod triggers the locking component. The movable disc has an open state that unfolds the main frame and a closed state that retracts the main frame. The movement of the trigger head and the trigger rod unlocks the locking structure, causing the movable disc to move, the main frame to unfold, and a water blocking wall to be quickly formed. After the water blocking device is unfolded, the counterweight rod can fall at an angle to the water surface, allowing the main frame to form a skeleton structure, providing a higher support effect for the formation of the water blocking wall.
Owner:SHANDONG UNIV OF SCI & TECH
Motor waterproof structure of food material chopping machine
ActiveCN224249484Uavoid flowImprove waterproof performanceMechanical energy handlingSupports/enclosures/casingsElectric machineryStructural engineering
The utility model provides a motor waterproof structure of a food material chopper, and belongs to the technical field of machinery. The problem that an existing chopper motor is poor in waterproof performance is solved. According to the food material chopping machine, the food material chopping machine comprises a machine base with an inner cavity and a motor vertically arranged in the machine base, the motor comprises an upper end cover and a rotor shaft, a vertically-penetrating through hole is formed in the machine base, the upper end of the rotor shaft sequentially penetrates through a center hole of the upper end cover and the through hole, and the waterproof structure comprises an oil seal arranged in the through hole. Sealing is formed between the rotor shaft and the inner wall of the through hole through an oil seal, a water retaining ring sleeves and is fixed on the rotor shaft, the water retaining ring is positioned between the oil seal and the upper end cover, and the water retaining ring is not in contact with the upper end cover; the inner side wall of the water retaining ring is tightly contacted with the outer wall of the rotor shaft to form sealing, and the outer diameter of the water retaining ring is larger than that of the center hole of the upper end cover. The waterproof performance of the motor can be enhanced.
Owner:ZHEJIANG QIANJIAHUI ELECTRICAL EQUIP CO LTD
A geopolymer-modified grouting material and its preparation method
This invention discloses a geopolymer-modified grouting material and its preparation method. The invention utilizes a composite activator and modifier to disrupt, depolymerize, and repolymerize the structure of coal gangue, fully activating it and giving it strong cementitious properties. This results in a geopolymer-modified grouting material with a three-dimensional network structure. The mass ratio of coal gangue powder: desulfurized gypsum powder: microsilica powder: composite activator: modifier = 100:8:5:5:3. The test data of the prepared geopolymer-modified grouting material for water control and foundation grouting are as follows: The grout was prepared with a water-cement ratio of 1:1, and its properties were measured as follows: fluidity 260 mm; stone formation rate 99.8%; initial setting time 990 min, final setting time 2112 min; 3-day plastic strength 1211.6 kPa; 7-day compressive strength 8.82 MPa; free expansion rate 0.3%.
Owner:CHINA ENERGY CHEM JIANGSU MINING ECOLOGY RES INST CO LTD
Method for controlling the use of water shutoff agents in oil wells in bottom water reservoirs
This application discloses a method for controlling the use of water-blocking agents in wells of bottom-water reservoirs. The method includes: obtaining the reservoir properties and fluid seepage mechanism of the bottom-water reservoir, wherein the reservoir properties include at least formation porosity; establishing a mathematical model for the dosage of water-blocking agents based on the reservoir properties and the fluid seepage mechanism, and determining the total dosage of water-blocking agents for the wells of the bottom-water reservoir based on the mathematical model; determining the dosage of multiple water-blocking agent slugs based on the total dosage of water-blocking agents, and obtaining the concentration of water-blocking agents in the multiple water-blocking agent slugs, wherein the sum of the dosages of water-blocking agents in the multiple water-blocking agent slugs is equal to the total dosage of water-blocking agents. The technical solution provided by this application can improve the water-blocking effect of wells in bottom-water reservoirs.
Owner:CHINA NAT PETROLEUM CORP +1
A steel strip production accident shear water-blocking structure
ActiveCN117428010Bincrease flexibilityImprove fitRolling safety devicesWork heating devicesClassical mechanicsSteel belt
Owner:HUNAN VALIN LIANYUAN IRON & STEEL CO LTD
Lateral sliding door structure of shower room
ActiveCN224120128UGood water blocking effectHas buffering functionWing arrangementsWing suspension devicesStructural engineeringMechanical engineering
The utility model discloses a shower room side sliding door structure which comprises a movable glass door, a fixed glass door, a first sliding guide rail and a second sliding guide rail, the movable glass door and the fixed glass door are both vertically arranged, and the movable glass door is perpendicular to the fixed glass door; according to the structure, the first sliding guide rail and the second sliding guide rail are arranged, the first sliding part slides in the first sliding guide rail, the second sliding part slides in the second sliding guide rail, and the first sliding part and the second sliding part are hinged to the movable glass door, so that when the movable glass door moves to be opened, the movable glass door translates and swings; compared with a traditional side-hung glass door, the movable glass door with the structure has the advantages that the overall occupied space is saved after the movable glass door is opened, and the overall structure is practical and reliable.
Owner:ZHONGSHAN 0BETTER SANLTARY WARE CO LTD
Large-area underground concrete pouring structure
ActiveCN224092573UGuarantee the construction qualityReduce the risk of leakageArtificial islandsClimate change adaptationArchitectural engineeringStructural engineering
The utility model belongs to the technical field of pouring, and particularly relates to a large-area underground concrete pouring structure which comprises two groups of opposite concrete structural plates and a post-cast strip plate, and the post-cast strip plate is located between the two groups of concrete structural plates. First water retaining ridges are integrally arranged at the tops of the opposite ends of the two sets of concrete structural plates, U-shaped steel sealing plates are placed at the tops of the concrete structural plates, mortar smearing splayed corners are arranged at the joints of the U-shaped steel sealing plates and the concrete structural plates, and the inner side surfaces of the U-shaped steel sealing plates make contact with the outer side surfaces of the first water retaining ridges. According to the roof post-cast strip sealing structure, the measure cost (manual materials) before the roof post-cast strip is sealed can be reduced, and the water retaining effect can be improved; in addition, due to repeated utilization of the U-shaped steel sealing plate, leakage of the top plate post-cast strip is avoided, the labor cost can be saved, the hidden danger of leakage is reduced, and the construction quality of the post-cast strip can be guaranteed.
Owner:CSCEC STRAIT CONSTR & DEV
Splicing type water retaining device for hydraulic engineering construction
ActiveCN224119495UAvoid disconnection situationsImprove stabilityDamsDykesButt jointArchitectural engineering
The utility model discloses a splicing type water retaining device for hydraulic engineering construction, and relates to the technical field of hydraulic engineering. The water retaining device comprises a water retaining seat, a handle is fixedly connected to the top of the water retaining seat, a splicing assembly is arranged on the side face of the water retaining seat, the splicing assembly comprises a U-shaped butt joint seat and a butt joint insertion block which are fixedly connected to the side face of the water retaining seat, a fixing frame is fixedly connected to the top of the U-shaped butt joint seat, and a reinforcing rod is fixedly connected to the bottom of the fixing frame. By arranging the splicing assembly, specifically, when the two water retaining seats are in butt joint, the U-shaped butt joint seat is inserted from the top of the butt joint insertion block, at the moment, the reinforcing rod is inserted into the insertion hole, at the moment, the two water retaining seats are in butt joint rapidly, and the butt joint insertion block is inserted into the U-shaped butt joint seat, so that the stabilizing effect can be improved; and the reinforcing rods are inserted into the inserting holes and can be reinforced again, so that the situation that the two water retaining bases are disconnected is avoided, splicing can be efficiently completed through the splicing mode, and the working efficiency is improved.
Owner:赵长河
Water shutoff agent and preparation method thereof
ActiveCN119060701BImproved dilution capabilityExcellent resistance to water dilutionDrilling compositionCrosslinked polymersCross linker
The application provides a water plugging agent and a preparation method thereof. The preparation method of the water plugging agent comprises the following steps: 1) uniformly mixing water, a first chelating agent, a polymerization monomer, a primary crosslinking agent, an initiator and an accelerator to obtain liquid A; 2) uniformly mixing water, a second chelating agent, a crosslinked polymer, a secondary crosslinking agent and a stabilizer to obtain liquid B; and 3) uniformly mixing liquid A and liquid B to obtain the water plugging agent.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1