Abstract: A refrigerator includes a box body, a door body, a hinge assembly, and a mounting block. The door body is connected to the box body. The hinge assembly includes a first hinge shaft and a second hinge shaft. The mounting block includes a first trajectory groove and a second trajectory groove. During a process of the door body being rotated to open or close, the first hinge shaft moves relative to the first trajectory groove, and the second hinge shaft moves relative to the second trajectory groove. The first trajectory groove includes a curved groove segment. An end of the curved groove segment extends in a direction proximate to a first side edge, and a distance between the curved groove segment and the door side wall is decreased along a direction from a door rear wall to a door front wall.

Abstract: A refrigerator is provided, which includes a refrigerator body, a pair of door bodies, a turnover beam, a guide seat and a limiting block. The turnover beam is pivotally connected with one of the pair of door bodies, and the turnover beam includes a turnover beam body. The guide seat includes a guide seat body and a guide groove disposed in the guide seat body. The limiting block is rotatably connected with the guide seat body. When at least a portion of the guide block presses the limiting block through the front side opening of the guide groove, the limiting block is configured to pivot and exit the guide groove, and after the guide block enters the guide groove, the limiting block is configured to be reset by pivoting to limit the guide block.

Abstract: A refrigerator includes a box body, a hinge assembly, and a door body. The hinge assembly includes a plate body, a locking hook, and a blocking portion. A free end of the locking hook extends in a direction away from the plate body and is bent in a direction proximate to the plate body, so as to form an opening toward the plate body. In a case where the door body is in a closed state, the blocking portion is located in the opening. During a process from closing to opening of the door body, the locking hook is deformed under force to be disengaged from the blocking portion and unlocked.

Abstract: A refrigerator includes a refrigerator body and a door body. In a case where the door body is opened from a closed state to a first state, a first hinge shaft moves from a first positioning position to a second positioning position along a first positioning trajectory line with respect to a first trajectory slot, and a second hinge shaft moves from a first guiding position to a second guiding position along a first guiding trajectory line with respect to a second trajectory slot. In a case where the door body continues to be opened from the first state to a second state, the first hinge shaft moves from the second positioning position to a third positioning position along a second positioning trajectory line, the second hinge shaft moves from the second guiding position to a third guiding position along a second guiding trajectory line.

Abstract: Provided is a piston-type explosive loading and blasting structure for a hard rock cable pit. The structure includes a first-step cut provided at a center of an excavation section and second-step cuts provided on a periphery of the first-step cut; and piston-type explosive loading structures are used for explosives in the first-step cut and the second-step cuts. According to the piston-type explosive loading structures in the present disclosure, due to plastic plugging of stemming and fixed elastic plugging of two disc steel plates, time of energy such as stress waves and explosive gas generated after the explosives explode acting on surrounding rocks is obviously prolonged, rock mass is fully broken, and loose blasting is formed without throwing.

Abstract: A tunnel section subjected to grouting reinforcement is divided into two parts, that is, an upper half section and a lower half section, cutting vibration reduction holes used in coordination with cutting holes are formed in the upper half section, and the cutting vibration reduction holes are not charged and are filled with water bags only. According to the blast hole arrangement structure used for blasting for the rheological soft-weak surrounding rock tunnel of the invention, a cutting blasting effect is improved, excess energy is emptied and absorbed, propagation of shock waves and stress waves around is reduced, and vibration is reduced; and according to the invention, the purpose of forming vibration isolation holes in a tunnel excavation contour line of the upper half section is to prevent, absorb, reflect and refract the propagation of the blasting shock waves, stress waves and seismic waves.

Abstract: Provided is a piston-type explosive loading and blasting structure for a hard rock cable pit. The structure includes a first-step cut provided at a center of an excavation section and second-step cuts provided on a periphery of the first-step cut; and piston-type explosive loading structures are used for explosives in the first-step cut and the second-step cuts. According to the piston-type explosive loading structures in the present disclosure, due to plastic plugging of stemming and fixed elastic plugging of two disc steel plates, time of energy such as stress waves and explosive gas generated after the explosives explode acting on surrounding rocks is obviously prolonged, rock mass is fully broken, and loose blasting is formed without throwing.

Abstract: A refrigerator is provided, which includes a refrigerator body, a pair of door bodies, a turnover beam, a guide seat and a limiting block. The turnover beam is pivotally connected with one of the pair of door bodies, and the turnover beam includes a turnover beam body. The guide seat includes a guide seat body and a guide groove disposed in the guide seat body. The limiting block is rotatably connected with the guide seat body. When at least a portion of the guide block presses the limiting block through the front side opening of the guide groove, the limiting block is configured to pivot and exit the guide groove, and after the guide block enters the guide groove, the limiting block is configured to be reset by pivoting to limit the guide block.

Abstract: The present invention relates to a reinforcement system at a railway tunnel section passing through a karst cave with a large dip angle and a construction method. The reinforcement system of the present invention can solve the problems of downward mud filling, watertightness, etc. of a top through structures of an umbrella arch, a concrete layer, a flexible buffer layer and a protective layer at the top, at a karst cave, of a tunnel, solve the problem of upward mud inrush at a bottom through structures of an anchor cable, a ring beam and a foundation pad at the bottom of the tunnel, guarantee stability of an arch bridge by erecting “a triple arch bridge” in a middle and adding a vertical bearing wall under the arch bridge, and make a railway safely cross the mud-inrush karst cave by safely laying a ballastless track on the bridge.

Abstract: The present invention relates to a reinforcement system at a railway tunnel section passing through a karst cave with a large dip angle and a construction method. The reinforcement system of the present invention can solve the problems of downward mud filling, watertightness, etc. of a top through structures of an umbrella arch, a concrete layer, a flexible buffer layer and a protective layer at the top, at a karst cave, of a tunnel, solve the problem of upward mud inrush at a bottom through structures of an anchor cable, a ring beam and a foundation pad at the bottom of the tunnel, guarantee stability of an arch bridge by erecting “a triple arch bridge” in a middle and adding a vertical bearing wall under the arch bridge, and make a railway safely cross the mud-inrush karst cave by safely laying a ballastless track on the bridge.

Abstract: Disclosed are a composite absorbent and a method for using same in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate. The composite absorbent comprises an ionic liquid and ethylene carbonate, wherein the ionic liquid is an imidazole ionic liquid, a quaternary ammonium ionic liquid and a quaternary phosphonium ionic liquid. The composite absorbent is used for absorbing ethylene oxide and carbon dioxide, and is also used in the absorption and conversion of ethylene oxide for the coupling co-production of ethylene carbonate.

Abstract: An ionic liquid solvent and gas purification method using the same are provided. The ionic liquid solvent consists of a main absorbent, a regulator for the main absorbent, an auxiliary absorbent, an activator, an antioxidant and water. The ionic liquid involves a low synthetic cost, low viscosity and high absorption capacity, and can be easily regenerated and recycled. The method, compared with traditional processes, has advantages such as a greater absorption capability and lower operation cost.

Abstract: Disclosed is a process for producing ethylene glycol catalyzed by an ionic liquid, characterized in that the process includes the following three steps: (a) a carbonylation step of ethylene oxide and CO2 catalyzed by an ionic liquid composite catalyst comprising a hydroxyl functionalized ionic liquid and an alkali metal salt under an aqueous condition to produce ethylene carbonate and ethylene glycol; (b) a hydrolysis step of reacting the reaction solution containing ethylene carbonate and the ionic liquid composite catalyst obtained in step (a) with water to produce ethylene glycol; (c) a purification step of dehydrating and refining ethylene glycol from the aqueous solution containing ethylene glycol and the catalyst produced in step (b). The present process has the following advantages: the catalyst has high activity, high suitability, and good stability, the reaction condition is wild, the conversion of ethylene oxide is high, the selectivity of ethylene glycol is high, and the process is simple.

Abstract: An ionic liquid solvent and gas purification method using the same are provided. The ionic liquid solvent consists of a main absorbent, a regulator for the main absorbent, an auxiliary absorbent, an activator, an antioxidant and water. The ionic liquid involves a low synthetic cost, low viscosity and high absorption capacity, and can be easily regenerated and recycled. The method, compared with traditional processes, has advantages such as a greater absorption capability and lower operation cost.