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30results about How to "Play the role of compression" patented technology

Gas-type tensile testing machine used for rod-shaped metal

The invention discloses a gas-type tensile testing machine used for rod-shaped metal. The tensile testing machine comprises a main control housing; the bottom of the main control housing is provided with a support plate structure; the main control housing and the support plate structure are combined to form an integral structure; the bottom of the support plate structure is fixedly provided with a fixing plate; the internal part of the main control housing is provided with a moving space; a spacing hole structure is arranged on the main control housing on one side of the moving space; a sealing column is arranged on the main control housing on one side of the spacing hole structure; the center of one end surface of the sealing column is provided with a main sealing rubber pad. The gas-type tensile testing machine is taken as a technical measuring equipment of known metal mechanical properties; detection effect is achieved via preset of air pressure; when the air pressure is larger than a preset air pressure, further compression is avoided, so that accurate detection is realized using simple equipment at low cost; the gas-type tensile testing machine is relatively low in cost, long in service life, and relatively high in practicality.
Owner:安徽华科实业有限公司

Absorption refrigeration circulation system and working method thereof

The invention belongs to the field of absorption refrigeration circulation, and specifically discloses an absorption refrigeration circulation system and a working method thereof. The circulation system comprises a generator, a heat exchanger, a solution pump, an absorber, a first circulation unit and a second circulation unit. A gas-liquid separator is additionally arranged in the first circulation unit, and a first gas flow control valve is arranged on a pipeline for connecting an outlet of the generator with an inlet of a first ejector. An outlet of the gas-liquid separator is connected with an inlet of a second condenser through a circulating pipeline, and a second gas flow control valve is arranged on a circulation pipeline. A temperature sensor is arranged beside the first evaporator and the second evaporator, and the temperature sensor, the first gas flow control valve and the second gas flow control valve are connected with a control system. Refrigerant steam is introduced into the second condenser of the second circulation unit through the second gas flow control valve, directly exchanges heat with a refrigerant and acts on the second evaporator as a refrigerant working medium, and it is guaranteed that the refrigerant flow in the first circulation unit is not changed.
Owner:XI AN JIAOTONG UNIV

Aerodynamic radial foil bearing with forward and reverse rotation directions and dovetail-shaped structure

The invention discloses an aerodynamic radial foil bearing with forward and reverse rotation directions and a dovetail-shaped structure, belongs to the technical field of air bearings, and aims to solve the problems that the existing aerodynamic radial foil bearing rotates in one direction; when the bearing is installed, the rotating direction assembly error is generated, and the shaft system failure is easily caused, and the existing air dynamic pressure foil bearing has poorer stability during operation. According to the technical key points, at least one dovetail-shaped structure is formed in the inner wall of a bearing sleeve in the axial direction in a penetrating mode, a top foil is fixed by inserting the top foil into the dovetail-shaped structure, and the dovetail-shaped structure is characterized in that a dovetail-shaped boss is arranged in the middle of the dovetail-shaped structure, and two slender grooves allowing the top foil to be inserted are symmetrically formed in the two sides of the dovetail-shaped boss. By reducing the cross stiffness of the bearing during operation, the stability of the bearing during operation can be effectively improved, and moreover, as the two ends of the top foil are simultaneously inserted into the slender grooves in the two sides of the dovetail structure, and a corrugated foil is fixed below the top foil in a welding manner, the bearing can be suitable for the forward rotation direction and the reverse rotation direction of a rotor.
Owner:宙斯能源动力科技(大连)有限公司

Inhalation type anesthesia device and working method thereof

The invention discloses an inhalation type anesthesia device and a working method thereof, and particularly relates to the technical field of medical instruments. The inhalation type anesthesia device comprises an anesthesia inhalation cover, the top end of the anesthesia inhalation cover communicates with a connecting pipe, a linkage block is arranged on one side of the connecting pipe, and supporting linkage mechanisms are arranged on the two sides of the linkage block; and each supporting linkage mechanism comprises a limiting shaft ring arranged on one side of the linkage block, and one side of the limiting shaft ring is connected with a first extrusion spring. The supporting linkage mechanisms are adopted, three-axis positioning operation is achieved, position calibration is more convenient, meanwhile, after the anesthesia inhalation cover is attached, the effect of rapidly fixing the anesthesia inhalation cover is achieved under the action of extrusion force of a second extrusion spring and a first extrusion spring, three-axis linkage adjustment is achieved, timely adjustment and timely fixation are achieved, the anesthetic inhalation cover does not need to be held by a medical worker for a long time, the problems of shaking and overflowing of the anesthetic inhalation cover are avoided, and the stable anesthetic input amount is increased.
Owner:牡丹江医学院附属红旗医院

Image encryption method based on new chaotic mapping and compressed sensing

The invention discloses an image encryption method based on new chaotic mapping and compressed sensing. The method comprises the steps: S1, constructing a novel chaotic structure, and generating new chaotic mapping; S2, in a message sending process, calculating an interference parameter and an interference number, and calculating a row cyclic shift key and a column cyclic shift key; S3, interfering the to-be-transmitted image by using the interference parameter and the interference number; S4, constructing a measurement matrix used during compressed sensing by using the new chaotic mapping, and performing compressed encryption on the interference image through the measurement matrix; S5, performing cyclic shift encryption in the row direction by using the row cyclic shift key; S6, performing cyclic shift encryption in the column direction by using the column cyclic shift key, and transmitting a key generation parameter through a secure channel; S7, in a message receiving process, generating a decryption key through the key generation parameter, and finishing decryption of the to-be-transmitted image through the decryption key. According to the method disclosed in the invention, thesecurity in the image storage and transmission process can be effectively improved.
Owner:HENAN POLYTECHNIC UNIV

A Dovetail Structure Aerodynamic Radial Foil Bearing with Forward and Reverse Rotation

ActiveCN112855747BImprove stabilityIncrease installation clearanceSliding contact bearingsAir bearingClassical mechanics
A dovetail-shaped structure aerodynamic radial foil bearing with forward and reverse rotation directions belongs to the technical field of air bearings. In order to solve the problem that the rotation direction of the existing aerodynamic foil bearing is unidirectional, the rotation occurs when the bearing is installed. Incorrect assembly can easily lead to shaft failure, and the existing aerodynamic foil bearing has the problem of poor operating stability. Technical points: At least one dovetail-shaped structure runs through the inner wall of the bearing sleeve along its axial direction, and the top foil is fixed by inserting the top foil into the dovetail-shaped structure. The dovetail-shaped structure is: the middle part is a dovetail-shaped protrusion. The dovetail-shaped projection is symmetrically provided with two elongated slots on both sides that allow the top foil to be inserted. By reducing the cross stiffness of the bearing during operation, the stability of the bearing during operation can be effectively improved, and since both ends of the top foil are inserted into the elongated grooves on both sides of the dovetail structure at the same time, and the bottom of the top foil passes through The corrugated foil is fixed by welding, so that the bearing can be applied to the forward and reverse directions of the rotor.
Owner:宙斯能源动力科技(大连)有限公司

Novel ecological floating island for agricultural non-point source pollution prevention and control

The invention discloses a novel ecological floating island for agricultural non-point source pollution prevention and control, and belongs to the technical field of agricultural non-point source pollution prevention and control. Oxygen generated by photosynthesis of plants is adsorbed by utilizing the adsorption capacity of the carbon nanotubes to the oxygen, an electromagnet is used for controlling a magnet block to move up and down to convey the oxygen into a water body, the oxygen is separated from a carbon nano tube by utilizing the pressure intensity generated when the magnet block movesdownwards to compress the gas, oxygen content in the water body is increased, the self-purification capability of the water body is improved, and a certain help is provided for restraining the eutrophication phenomenon. Microorganisms capable of degrading blue-green algae are cultured through a monitoring piece, when a large amount of blue-green algae begins to appear, the monitoring piece can float up to the water surface along with the large consumption of microorganisms and the reduction of the mass of the monitoring piece so as to send an early warning signal to the outside, and response measures can be conveniently taken in time. Compared with the prior art, the purification effect of the ecological floating island can be further improved, and meanwhile the early warning function is achieved.
Owner:周代远

Gas type tensile testing machine for rod metal

The invention discloses a gas type tensile testing machine for rod metal. The gas type tensile testing machine comprises a main control shell body, wherein a supporting plate structure of an integrated structure with the main control shell body is arranged at the bottom of the main control shell body, a fixed plate is fixed to the bottom of the supporting plate structure, a movement space is arranged in the main control shell body, a limiting hole structure is arranged on the main control shell body and on one side of the movement space, a sealing column is arranged on the main control shell body and on one side of the limiting hole structure, and a main sealing pad is arranged in the center of one end face of the sealing column. The gas type tensile testing machine disclosed by the invention can be used as technical detection equipment of known metal mechanical properties; by means of presetting air pressure, a detection effect is achieved; when air pressure is larger than preset airpressure, a further compression effect is avoided; thus, an accurate detection effect can be achieved under the premise that equipment is simple and cost is low; furthermore, the gas type tensile testing machine has the advantages of lower use cost, higher long service life and stronger high practicability.
Owner:广州一恒科技有限公司

An absorption refrigeration cycle system and its working method

The invention belongs to the field of absorption refrigeration cycle, and specifically discloses an absorption refrigeration cycle system and a working method thereof. The cycle system includes a generator, a heat exchanger, a solution pump, an absorber, a first circulation unit and a second circulation unit ; A gas-liquid separator is added in the first circulation unit, and a first gas flow control valve is provided on the pipeline connecting the outlet of the generator with the inlet of the first injector; the outlet of the gas-liquid separator is connected with the circulation pipeline through the The inlet of the second condenser is connected, and the circulation pipeline is provided with a second gas flow control valve; a temperature sensor is provided beside the first evaporator and the second evaporator, the temperature sensor, the first gas flow control valve and the second gas The flow control valve is connected to the control system. It is introduced into the second condenser of the second circulation unit through the second gas flow control valve, and conducts direct heat exchange with the refrigerant, and acts as a refrigerant working medium in the second evaporator to ensure the refrigerant in the first circulation unit. Flow remains unchanged.
Owner:XI AN JIAOTONG UNIV

Aluminum alloy die casting

The invention relates to the technical field of die castings, in particular to an aluminum alloy die casting. The aluminum alloy die casting comprises a base and an amplitude reduction assembly, a heat dissipation copper block is fixedly embedded in the base, a plurality of trapezoidal cavities distributed at equal intervals are formed in the heat dissipation copper block, an area expanding assembly used for expanding the area of the heat dissipation copper block and a refrigeration assembly are installed on the heat dissipation copper block, and the amplitude reduction assembly used for reducing the amplitude of the base is installed in an installation cavity formed in the base. Hydraulic cylinders are started to push connecting rods to slide outwards, so that heat dissipation plates on the connecting rods slide out of the trapezoidal cavities, on one hand, the ventilation rate of the trapezoidal cavities is increased, on the other hand, the overall area of the heat dissipation copper block is increased, the heat dissipation rate of an installation element is increased, by opening semiconduction refrigeration sheets and a submersible pump in the refrigeration box body, cooling liquid continuously and circularly flows along with liquid storage boxes, heat absorption pipes, flow guide pipes and the refrigeration box body, the heat absorption pipes can absorb heat on the heat dissipation copper block, and the heat dissipation rate is further increased.
Owner:湖南徽宏五金有限公司

Gas type drawing machine for metallic rod

The invention discloses a gas type drawing machine for a metallic rod. The gas type drawing machine comprises a master control shell, wherein a supporting plate structure, which is of an integrated structure with the master control shell, is arranged at the bottom of the master control shell, a fixed plate is fixed at the bottom of the supporting plate structure, a working space is arranged insidethe master control shell, a limiting hole structure is arranged on the master control shell located at one side of the working space, a sealing column is arranged on the master control shell locatedat one side of the limiting hole structure, and a main sealing pad is mounted at the center of one end face of the sealing column. The gas type drawing machine is used as technical detection equipmentfor mechanical properties of known metals, a detection action is acted through presetting air pressure, and a compressing action cannot be further acted when air pressure is higher than the preset air pressure, so that a definite detecting action is achieved on the premise of simple equipment and low manufacturing cost; the service cost is relatively low, and the service life is relatively long,so that the gas type drawing machine has relatively high practicability.
Owner:广州一恒科技有限公司

Distillation reaction kettle with protective structure for chemical production

The invention provides a distillation reaction kettle with a protective structure for chemical production. The distillation reaction kettle comprises a main body, side pieces, a mounting head, a moving piece, a buffer piece, a connecting pipe, an overturning pipe, a supporting plate and a collecting bin, wherein the main body is a distillation reaction kettle body, and the bottom of the main body is of a plate-shaped structure with a convex middle part; the side pieces are located at the bottoms of the side edges of the main body, and the inner ends of bearing pieces of the side pieces are connected with the side edges of the main body. According to the distillation reaction kettle, when the internal air pressure of the main body is too high, the moving part can automatically compress the spring, so that the sealing plate can open the outer tank to release pressure, and if the pressure release degree needs to be adjusted, the supporting rod can be manually controlled to move up and down to drive the clamping plate to move; and the inner side of the bottom of the clamping plate can be inserted into the clamping groove in the proper position, then the pressing plate can be located in the fixed position to extrude the spring, and then the moving piece is pressed for use.
Owner:ZHEJIANG EUCHEM CHEM
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