Abstract: The present application relates to a liquid injection ring and a refrigerant lubricated bearing assembly, the liquid injection ring includes a ring body; the ring body is provided with a liquid storage chamber and a plurality of liquid guide holes; the liquid storage chamber is arranged in a circle around the axis of the ring body; the inlets of the liquid guide holes communicate with the liquid storage chamber; the outlets of the liquid guide holes face the end surface of a to-be-lubricated bearing; and the plurality of liquid guide holes are uniformly distributed in a spaced manner along the circumferential direction of the ring body.

Abstract: The present disclosure provides a refrigeration system and a refrigerated storage including the same, relating to the technical field of refrigeration equipment, and solving the technical problems of a high compressor pressure ratio, a reduced refrigeration coefficient and a high exhaust temperature in a refrigerated storage. The refrigeration system includes at least two sets of refrigerant compression devices, a refrigerant evaporation device and a flow path switching valve set, wherein all the refrigerant compression devices are fluidly connected to the flow path switching valve set; the flow path switching valve set is configured to control the refrigerant compression devices by switching the flow path switching valve set to supply a refrigerant to a refrigerant evaporation in an alternative manner or in series.

Abstract: Disclosed in the present invention are a zero-load output non-stop control method and apparatus, and a unit. The apparatus comprises: a three-way valve, provided at an exhaust port of a compressor; a mixing tank, provided between an air suction port of the compressor and a condenser and used for mixing a refrigerant discharged by the compressor with a refrigerant throttled by the condenser; a first electronic expansion valve, provided on a first pipeline from the condenser to the mixing tank and sued for controlling the amount of the refrigerant throttled by the condenser and entering the mixing tank; and an electromagnetic valve, provided on a second pipeline between the three-way valve and the mixing tank and used for controlling the amount of the refrigerant discharged by the compressor and directly entering the mixing tank.

Abstract: The present disclosure relates to a dual-stage compressor, a control method thereof, and an air conditioning unit. The dual-stage compressor includes a low-pressure stage; a high-pressure stage connected in series with the low-pressure stage; and a volume ratio adjustment mechanism arranged at the high-pressure stage and configured to adjust the volume ratio of refrigerant compression at the high-pressure stage. When the final compression pressure of the compressor is lower or greater than the exhaust pressure, the volume ratio adjustment mechanism is operated to increase or reduce the volume ratio of refrigerant compression at the high-pressure stage so that the final compression pressure of the compressor is equal to the exhaust pressure, and overcompression and undercompression are improved to adapt to changes in external conditions, increase the energy efficiency of the compressor, and reduce the noise of the compressor.

Abstract: A method reading memory using bi-directional sensing, including programming first memory cells coupled to a first word-line using a normal programming order; programming second memory cells coupled to a second word-line using a normal programming order; reading data from the first memory cells by applying a normal sensing operation to the first word-line; and reading data from the second memory cells by applying a reverse sensing operation to the second word-line. Methods also include receiving an error associated with reading data from the first memory cells; and then reading the data from the first memory cells by applying a reverse sensing operation to the first word-line. Method also include receiving an error associated with reading the data from the second memory cells; and then reading the data from the second memory cells by applying a normal sensing operation to the second word-line.

Abstract: The present disclosure is related to a slide valve, a slide valve adjustment mechanism and a screw compressor. The slide valve includes a static slide valve and a moving slide valve, wherein the static slide valve is fixedly installed in a slide valve cavity and provided with an axially-penetrating valve hole; a plurality of bypass holes communicating with the valve hole (110) are formed in the sidewall of the static slide valve, and an exhaust port is formed in the sidewall of one end of the static slide valve. The slide valve may avoid scraping between the slide valve and a screw rotor and the slide valve cavity. Gaps between the slide valve and parts which cooperate with same are reduced, so that the leakage is reduced while the energy efficiency of the compressor is increased.

Abstract: The present invention relates to a quality control method for a Chinese patent drug, and specifically relates to an identification method and a content measurement method for the pediatric compound Endothelium Corneum Gigeriae Galli chewable tablet. Identification is carried out by using specific thin-layer chromatographic identification conditions, and the content is measured by using specific high-performance liquid chromatographic conditions. Accordingly, the specificity and the accuracy are high, chemical components of the product can be fully reflected, the sensitivity is high, the reproducibility is high, the operations are simple, and the change condition of the product quality can be reflected more objectively, comprehensively and sensitively, so that the product quality is controlled on the whole, and comprehensive monitoring of the quality of the Chinese Drug is implemented.

Abstract: The present invention discloses an ocean surface water continuous sampling device, the device comprises a support that ascends and descends along the stern, on the support a sampling pipe for drawing and sampling the surface water, and hydraulic tanks for driving the support up and down to send the sampling pipe to where the surface water is are provided, and a buffer mechanism for avoiding damage due to constant water resistance to the sampling pipe during sailing is provided on the support too. Configuration of the depth transducer, control unit and hydraulic tanks, promises surface water accurate and continuous collection during research vessel travelling; the buffer mechanism works effectively in avoiding radial and axial damage to the sampling pipe due to continuous water current resistance, which successfully relieves the resistance, and prolongs sampling pipe life; and automatic surface water collection is realized with the automatic control design.

Abstract: Some embodiments of the disclosure provide a bearing installation and fixation structure and a compressor. The bearing installation and fixation structure includes: a rotatable shaft (7); a bearing (6), provided on the rotatable shaft (7) in a sleeving manner; and an axial locating member, provided on the rotatable shaft (7) in a sleeving manner and including a fixing connecting section (1) and an axial locating section (2) that are integrated with each other; the fixing connecting section (1) is detachably fixed on the rotatable shaft (7); and the axial locating section (2) limits a position of the bearing (6) axially.

Abstract: A method for memory program verification includes performing a write operation on memory cells of a memory device. The method also includes identifying memory strings associated with respective memory cells of the memory cells. The method also includes identifying a first memory string of the memory strings. The method also includes disabling a portion of a write verification for the first memory string. The method also includes enabling the portion of the write verification for other memory strings of the memory strings. The method also includes performing at least the portion of the write verification operation on write verification enabled memory strings.

Abstract: The present disclosure relates to a bearing supporting assembly and a machining method thereof, and a centrifugal compressor. The bearing supporting assembly includes: bearing supports, provided with through holes for mounting radial bearings; and a fixing plate, detachably mounted at one end of each of the bearing supports along an axial direction, sides, away from the bearing supports, of the fixing plates being configured to mount first thrust bearings.

Abstract: The present disclosure relates to a centrifugal compressor and air conditioning equipment. The centrifugal compressor includes: a main shaft; a diffuser, provided with a first thrust bearing at one end away from a diffusion surface; a supporting assembly, provided with a second thrust bearing at one end facing towards the diffuser; and a thrust disk, configured to rotate together with the main shaft, located between the diffuser and the supporting assembly along an axial direction and provided with a thrust portion, a clearance between one side of the thrust portion and the first thrust bearing and a clearance between the other side of the thrust portion and the second thrust bearing being limited through mutual abutting of the diffuser and the supporting assembly.

Abstract: The present disclosure provides a compressor rotor, a compressor and a refrigerant circulation system. The compressor rotor includes: a motor rotor including a plurality of rotor sections, a locking rod, a compression unit rotating part and a locking member. The rotor sections are fixedly connected in an axial direction and are provided with an axial through hole; and the locking rod penetrates through the axial through hole. The compression unit rotating part is located at the end part of the motor rotor and is connected to the locking rod. The locking member is configured to lock the compression unit rotating part on the locking rod. The locking rod, the compression unit rotating part and the locking member form a pressing structure which applies a pressure toward an axial inner side to the motor rotor.

Abstract: A three-dimensional memory device includes an alternating stack of insulating layers and electrically conductive layers located over a substrate, where the electrically conductive layers comprise word lines located between a source select gate electrode and a drain select gate electrode, a memory opening vertically extending through each layer of the alternating stack to a top surface of the substrate, a memory film and vertical semiconductor channel having a doping of a first conductivity type located in the memory opening, and an active region having a doping of a second conductivity type that is an opposite of the first conductivity type and adjoined to an end portion of the vertical semiconductor channel to provide a p-n junction. The end portion of the vertical semiconductor channel has a first thickness, and a middle portion of the vertical semiconductor channel has a second thickness which is less than the first thickness.

Abstract: The invention provides an air conditioner control method and device and an air conditioner. The air conditioner control device acquires a current temperature of a chilled water of a unit at a preset period; determine a target load of the unit, a target temperature of a chilled water and a target temperature of a cooling water based on a temperature of the chilled water set by a user and the current temperature of the chilled water; determine an evaporating parameter and a condensing parameter of the unit based on the target load of the unit, the target temperature of the chilled water and the target temperature of the cooling water; and determine operation parameters of a compressor based on the target load of the unit, the evaporation parameter and the condensation parameter. Therefore, the unit can operate based on the operation parameters.

Abstract: The disclosure relates to a centrifugal compressor and a diffuser; the diffuser includes a pressure drive mechanism, a first diffuser part, a second diffuser part and a movable diffuser part movable diffuser part being connected with the pressure drive mechanism and movably arranged on one of the first diffuser part and the second diffuser part; moreover, the movable diffuser part gets close to or leaves away from the other one of the first diffuser part and the second diffuser parts under the action of a pressure medium in the pressure drive mechanism so as to adjust a width of a pressure diffusion flow channel and prevent adverse phenomena such as gas flow stall and surging.

Abstract: The disclosure provides a method for biohydrogen production. The method includes: mixing a hydrogen production medium and a buffer solution Na2HPO4/NaH2PO4 having a pH value of 5-9, to yield a first mixture; adding corn stalk powder and cellulase to the first mixture and mixing, to yield a second mixture; adding a suspension of photosynthesis bacteria HAU-M1 at the late exponential phase to the second mixture, to yield a third mixture; and sealing the third mixture and allowing for photo-fermentation biohydrogen production under anaerobic fermentation conditions.

Abstract: The present disclosure is related to a slide valve, a slide valve adjustment mechanism and a screw compressor. The slide valve includes a static slide valve and a moving slide valve, wherein the static slide valve is fixedly installed in a slide valve cavity and an provided with an axially-penetrating valve hole; a plurality of bypass holes communicating with the valve hole (110) are formed in the sidewall of the static slide valve, and an exhaust port is formed in the sidewall of one end of the static slide valve. The slide valve may avoid scraping between the slide valve and a screw rotor and the slide valve cavity. Gaps between the slide valve and parts which cooperate with same are reduced, so that the leakage is reduced while the energy efficiency of the compressor is increased.

Abstract: The present application relates to a liquid injection ring and a refrigerant lubricated bearing assembly, the liquid injection ring includes a ring body; the ring body is provided with a liquid storage chamber and a plurality of liquid guide holes; the liquid storage chamber is arranged in a circle around the axis of the ring body; the inlets of the liquid guide holes communicate with the liquid storage chamber; the outlets of the liquid guide holes face the end surface of a to-be-lubricated bearing; and the plurality of liquid guide holes are uniformly distributed in a spaced manner along the circumferential direction of the ring body.

Abstract: The present application discloses a cooling system and a control method thereof; the cooling system includes a compressor unit, a condenser, a first solenoid valve, a second solenoid valve, a first throttle valve and a frequency converter; the second solenoid valve and the first throttle valve are connected with the first solenoid valve in parallel after being connected in series with each other; the compressor unit, the condenser, the first solenoid valve and the frequency converter are connected in series to form a first cooling loop; the compressor unit, the condenser, the second solenoid valve, the first throttle valve and the frequency converter are connected in series to form a second cooling loop; and the frequency converter is internally provided with a temperature detection module and a heat exchange module.