93results about How to "Reduce material requirements" patented technology

The invention discloses a high-stability iron-cerium flow battery and a preparation method of electrolyte, and belongs to the technical field of flow batteries. A positive electrolyte and a negative electrolyte are cerium salt and ferric salt, and are respectively mixed with nitrilotriacetic acid, ethylenediamine tetraacetic acid, trans-1, 2-cyclohexanediamine tetraacetic acid, 1, 3-propane diamine tetraacetic acid, N-(2-ethoxyl) ethylenediamine-N, N ', N'-triacetic acid, iminodiacetic acid, iminodisuccinic acid, succinic acid, N, N '-bis (2-hydroxyethyl)-N, N', N '-triacetic acid and N, N'-bis (2-hydroxyethyl)-N, N '-bis (2-hydroxyethyl)-N, N'-bis (2-hydroxyethyl)- N, N '-ethylenediamine disuccinic acid, aspartic acid or a derivative chemical thereof are coordinated to form an aqueous solution of the coordination compound. The positive electrolyte and the negative electrolyte are prepared from the same and equal chelating agent and supporting electrolyte, and the matching degree of the acid-base property of the positive electrolyte and the negative electrolyte is maintained; the auxiliary electrolyte is added, so that the viscosity difference between the positive electrolyte and the negative electrolyte is reduced, the transmembrane migration of water is reduced, and the conductivity is improved. The selected chelating agent is stably combined with iron and cerium, transmembrane transportation of active substances is inhibited, ion cross contamination among different electrolytes is reduced, and meanwhile side reactions are reduced. The price is low, and the charge-discharge performance and the cycle life of the iron-cerium flow battery are effectively improved at relatively low cost.

The utility model relates to the field of circuit protection, in particular to a contactor integrated with an excitation function, and an excitation ignition assembly, a first piston, a first conductive part, an auxiliary contact system, a push rod, a melt, an air passage, a second piston and an elastic part are integrated in the contactor. The melt and the auxiliary contact system are connected in series and then are connected in series between the two static contacts. In a normal working state, the auxiliary contact system is insulated and disconnected, when an overload current, a short-circuit current or an abnormal condition occurs, the ignition assembly is excited to act to drive the first piston and the first conductive piece to move, the first conductive piece enables the auxiliary contact system to be conducted and closed, and the melt is connected into a main loop in a parallel connection mode; and then the second piston and the elastic piece are driven to displace through the air passage, so that the contact system is switched off, the elastic piece generates irreversible deformation, and the first piston and the first conductive piece push the push rod to disconnect the melt. According to the invention, the power loss is low, zero-current cut-off of a main loop can be realized, and the breaking capacity and the breaking reliability are improved.

The invention belongs to the technical field of cables, and particularly relates to a high-temperature-resistant metallurgical vehicle-mounted flexible cable and a preparation method thereof. According to the high-temperature-resistant cable material, polyimide, polyphenylene sulfide and polybenzimidazole are matched, so that the high-temperature-resistant cable material is endowed with extremely high high temperature resistance, can resist the high temperature of 300 DEG C, and is extremely suitable for cable materials for metallurgy. Then, the flexibility of the material is improved by adding a flexible polyether-ether-ketone / nano silicon dioxide compound, and the surface of nano silicon dioxide is treated, so that the loading rate of polyether-ether-ketone can be increased, the phase separation phenomenon of polyether-ether-ketone in a blend is prevented, and uniform dispersion is promoted. And finally, the prepared high-temperature-resistant metallurgical vehicle-mounted flexible cable material is used as a filler and a sheath of the cable material, so that the cable structure is reduced, the production difficulty of the cable is reduced, the production process is simplified, and the material and process requirements are reduced, thereby achieving the purposes of reducing the cost and improving the production efficiency to a certain extent.

The invention belongs to the technical field of superconduction, and discloses a conduction cooling superconducting magnet and a processing method thereof.The conduction cooling superconducting magnet comprises a superconducting magnet framework, a superconducting coil and a cold conduction ring, the superconducting magnet framework is provided with a plurality of partition plates arranged at intervals, and the partition plates are provided with axial notches formed in the circumferential direction of the partition plates at intervals; the superconducting coil is wound on the superconducting magnet framework, the cold conduction rings are installed on the radial outer side of the superconducting coil, the multiple cold conduction rings are distributed in the circumferential direction of the superconducting coil at intervals, and each cold conduction ring is provided with an avoiding notch for the partition plate to penetrate out and provided with at least two external cold conduction connectors. While the superconducting coil winding and cold conduction functions are achieved, the superconducting coil winding and cold conduction structure installation efficiency is greatly improved, the manufacturing cost is reduced, and due to the fact that the cold conduction ring serving as the cold conduction structure is directly installed on the outer side of the superconducting coil, the good cold conduction effect is achieved.

The invention discloses a control method, a processor and a control device for a hybrid agricultural vehicle and the hybrid agricultural vehicle. The control method comprises the steps that it is determined that the hybrid agricultural vehicle is in a start allowing state; determining that the engine enters an engine starting mode; controlling a high-voltage power distribution unit to distribute electric energy of the power battery to a generator; controlling the generator to rotate and driving the engine to rotate; acquiring the actual rotating speed of the generator; comparing the actual rotating speed with a preset target rotating speed; and under the condition that the actual rotating speed reaches the preset target rotating speed, it is determined that the engine is in a starting completion state. The control method for the hybrid agricultural vehicle is simple and easy to operate, so that the hybrid agricultural vehicle can be better suitable for extreme environments such as low temperature and the like.

The invention discloses a process for continuously producing chloroethane by using byproduct hydrogen chloride, which belongs to the field of chloroethane production, and comprises the following steps: (1) catalytic reaction: fully mixing hydrogen chloride and ethylene, and feeding the mixture into a reactor for reaction to generate a gas phase and a liquid phase; (2) multi-stage condensation: after the gas phase of the reactor is subjected to first-stage circulating water cooling condensation and second-stage refrigerant cooling, most of chloroethane is cooled to a crude product tank, and a small amount of residual chloroethane and hydrogen chloride enter the reactor through a compressor; and (3) recycling hydrogen chloride: a gas phase obtained by secondary condensation mainly comprises hydrogen chloride, and is recycled to the bottom of the reactor for continuous reaction after being pressurized by a compressor, the process flow is simple, the purity of chloroethane is high, the production consumption is low, and recycling and continuous production of chloroethane are realized.

The invention provides a propane dehydrogenation reaction solvent absorption and separation method and system.The method comprises the steps that product gas of a propane dehydrogenation reaction is compressed and subjected to three-phase separation through shallow cooling, and a water-phase product, an oil-phase product and a gas-phase product are obtained; and treating the water-phase product as wastewater, drying the oil-phase product, then carrying out rectification separation, drying the gas-phase product, and then carrying out separation by a solvent absorbent. The system comprises a compression shallow cooling unit, a three-phase separation tank, an oil phase rectification separation unit and a gas phase solvent absorption separation unit. The novel separation system for separating and recovering propane and propylene in propane dehydrogenation reaction gas by adopting a shallow cooling and solvent absorption technology reduces a reaction gas cryogenic section and a cryogenic refrigeration system, and has the advantages of high propane and propylene recovery rate, small absorbent loss, short process flow, low energy consumption and the like.

The utility model discloses a needle knife with a plastic handle, and belongs to the field of medical instruments. The needle knife comprises a needle knife body and a plastic tube handle, the head end of the needle knife body is a needle knife edge, one end of the plastic tube handle is provided with a navigation structure, and the structural surface of the navigation structure and the edge surface of the needle knife edge face the same direction; the flat navigation structure can help a doctor determine the direction of the cutting edge of the needle knife, and the fixed end of the needle knife body is fixedly connected with the plastic tube handle through a condensation welding fixing structure or is fixedly connected with the plastic tube handle in a mechanical mode or a dispensing mode. In the high-temperature flattening process of the navigation structure, the contact section of the needle knife body and the high-temperature softened plastic pipe handle can be embedded into the inner wall of the plastic pipe handle, the axial inner hole shrinks to clamp the needle knife body in the inner hole, the needle knife body is fixedly connected with the plastic pipe handle, and continuous assembly automatic production can be achieved. According to the plastic handle needle knife produced in the assembly mode, the technical problems that an existing plastic handle needle knife manufactured in a one-time forming injection molding mode is high in cost, low in production efficiency and the like are solved.

The present invention provides a pulverized coal burner for ignition and stability and an ignition method, belonging to the technical field of thermal power generation, the pulverized coal burner for ignition and stability comprises an ignition gun, an inlet section, a pre-combustion chamber and a flame transmission tube; a combustion zone and a secondary air channel for sending secondary air into the combustion zone are arranged in the pre-combustion chamber; the front end of the inlet section extends into the pre-combustion chamber and is aligned with the combustion zone, and the rear end is located outside the pre-combustion chamber as a primary air inlet; the ignition gun is installed at the center of the front end of the inlet section, and the front end extends into the pre-combustion chamber and is aligned with the combustion zone; the rear end of the flame transmission tube is connected to the front end of the pre-combustion chamber, and is used to send the pulverized coal flame burning in the combustion zone to a preset position in the main burner, and meet with the pulverized coal airflow of the main burner. The present invention uses pulverized coal as fuel, which is consistent with the existing fuel of the power plant, can completely replace the oil burner and the plasma ignition device, can realize the ultra-low load stable combustion and flexibility adjustment function of the power plant boiler, and the thermal power plant does not need to use oil as fuel.

The invention belongs to the technical field of hydrodesulfurization, and particularly relates to a butyl phosphonic acid modified magnesium-based hydrodesulfurization material and a preparation method thereof. The magnesium-based hydrodesulfurization material is prepared from the following raw materials: magnesium, carbon black and butyl phosphonic acid, and the preparation method comprises the following steps: adding the magnesium into the carbon black for ball milling; carrying out hydrotreating on a solid product obtained by ball milling; adding the hydrotreated solid product into butyl phosphonic acid for ball milling; and carrying out heat treatment on a solid product obtained by ball milling in the previous step to prepare the butyl phosphonic acid modified magnesium-based hydrodesulfurization material. Magnesium hydride in the magnesium-based hydrodesulfurization material is used as a high-activity hydrogen source for hydrodesulfurization of dibenzothiophene in an anthracene oil liquid phase, and high temperature and high pressure are not needed in the hydrodesulfurization process; the surface of magnesium hydride is modified by butyl phosphonic acid, so that dibenzothiophene molecules stand and are adsorbed on the surface of magnesium hydride, a direct hydrogenolysis desulfurization reaction is carried out, and a benzene ring is not subjected to hydrogenation saturation, so that the selectivity of the hydrodesulfurization reaction can be improved.

The utility model discloses a heating assembly and a furnace body structure. The heating assembly comprises a heating pipe, a housing and two connecting pieces, wherein the housing is sleeved on the outer side of the heating pipe, and the two ends of the housing axially extend outwards into the side part of a furnace body; the two connecting pieces are respectively arranged at the two ends of the heating pipe; the connecting piece comprises an adapter column arranged on the outer side of the end of the heating pipe in a sleeving mode, a conductive column arranged on the outer side of the furnace body and axially extending into the adapter column and a fixing plate arranged on the outer side of the conductive column in a sleeving mode and fixed to the outer side of the furnace body, and a sealing ring making contact with the outer side wall of the furnace body is embedded in the side, facing the furnace body, of the fixing plate. According to the utility model, the sealing of the end part of the heating pipe is realized, and the assembly process is simplified.

A method for preparing a charged hydrogel polyamide double network reverse osmosis membrane, which relates to a method for preparing a reverse osmosis membrane. The purpose of the present invention is to solve the problem that the reverse osmosis membrane prepared by the existing method has multiple-step reactions and insufficient binding force of different structural and effective layers. The present invention constructs a charged hydrogel polyamide double network layer on the membrane surface through an interface-initiated free radical polymerization reaction, and enhances the electrical properties of the membrane through the presence of the charged hydrogel, thereby limiting the dissolution of ions in the water on the membrane surface and the diffusion of ions in the membrane, thereby reducing the number of ions passing through the membrane. At the same time, the hydrogel improves the hydrophilicity of the membrane, which is beneficial to the transmission of water molecules in the membrane and the improvement of the anti-pollution performance of the membrane. Method: 1. Prepare a polymer solution; 2. Prepare a reverse osmosis membrane; 3. Clean the membrane. The double network reverse osmosis membrane prepared by the present invention has a wide and uniform distribution of charged groups, which is beneficial to the efficient separation of salt and water. The present invention can obtain a charged hydrogel polyamide double network reverse osmosis membrane.

The present invention discloses a CO 2 A method for catalyzing the hydrolysis of waste PET polyester involves the comprehensive utilization of waste resources. The method uses high-pressure CO 2 Gas is used as a catalyst for the hydrolysis of waste PET polyester. 2 Carbonic acid is formed with water. After the reaction is completed, the carbonic acid is regenerated into CO 2 The gas is recycled, and the reaction obtains pure terephthalic acid (TPA) crystals and ethylene glycol (EG) aqueous solution, thereby realizing resource utilization of waste PET. The products of the method of the present invention are terephthalic acid and ethylene glycol aqueous solution. The present invention can be used for depolymerization and upgrading of waste PET polyester materials, and the obtained raw material monomer terephthalic acid can be used for recycling PET to realize system closed loop, and the ethylene glycol aqueous solution is used in the field of wastewater biological treatment as an external carbon source. In addition, the catalyst is cheap and easy to obtain, the catalyst has high catalytic efficiency in the reaction, is easy to recover, can be reused, and effectively reduces costs.

The present invention provides a dual-power steam turbine, which is composed of a steam turbine and a fuel engine. A heat exchanger is arranged on the fuel engine casing, the engine manifold, the outside of the engine cylinder, or any part of the engine exhaust outlet to convert the engine waste heat into high-pressure steam; the steam turbine air inlet is connected to the high-pressure steam outlet of the heat exchanger and the exhaust port of the fuel engine to form a dual-power steam turbine. The present invention increases the thermal efficiency of the fuel engine to more than 60%, saves more than 20% of fuel, and reduces exhaust emission pollution by more than 60%; it is not only applicable to ground engines but also to sea and air engines; it fundamentally solves the problems of low efficiency, high fuel consumption, and serious pollution of fuel engines; it makes the fuel engine an energy-saving and environmentally friendly engine.

A kind of fixed structure of side opening faucet valve core seat, the side opening water nozzle of main body shell is provided with internal thread;A valve core seat, the front end face forms two water inlet holes and a water outlet hole, the external of the main body part of the valve core seat is fixed with the metal support sheet that protrudes from the main body part;The side opening water nozzle of the main body shell is provided with the support end face that is partially or entirely circumferentially protruded inward, the support end face is not blocked in the space part of water nozzle, the front end of valve core seat and metal support sheet are suitable to pass through, and the rear wall of the main body part of metal support sheet protruding from the main body part is partially or entirely abutted on support end face, to provide a support force to valve core seat using support end face;A valve core sleeve is screwed with the internal thread of side opening water nozzle, while pressing valve core seat and support end face;A valve core is locked into valve core sleeve.In this patent, the problem that pulling pipe is not smooth due to limited product shape is overcome, the valve core seat has high applicability, can be directly applied to multiple products, and cost is reduced.

The application discloses a method and device for eliminating white smoke in wet desulfurization flue gas, which mixes hot air with reheated flue gas to eliminate white smoke in the flue gas, collects various temperature and humidity data, and finally calculates the critical heating temperature T of the hot air required for eliminating white smoke in the flue gas HCT , and then adjusts the amount of heat medium of the air heater in real time until the temperature T of the hot air is equal to the critical heating temperature T ah of the hot air HCT , and then the flue gas is discharged. The application can heat the flue gas after wet desulfurization by the intermediate wall heating, mix the flue gas with hot air, determine the critical heating temperature of the hot air for eliminating white smoke in the flue gas in real time, adjust the amount of heat medium in real time to control the temperature of the hot air, automatically control the amount of heat medium for mixed heating and eliminating white smoke, and thus eliminate white smoke and avoid unnecessary energy consumption of the device caused by the lack of theoretical basis for adjusting the temperature of the discharged flue gas by the operator.

The utility model provides a kind of civil aircraft suitcase hinge, comprising: rocker arm and base, rocker arm below is provided with mounting hole and camshaft, base below is rotatably installed with threaded adjusting shaft, another end of threaded adjusting shaft is rotatably installed in the middle of camshaft, the middle part of base is fixedly installed by rocker arm pivot through mounting hole, rocker arm forms four-bar linkage by camshaft and connecting rod, limiting block is integrated in base, set the minimum opening angle of case door.The hinge system of the utility model is through the innovative "axial compression+radial decoupling" design concept, combined with modular adjustable structure, while ensuring high reliability, realizes the accurate control of case door movement and the convenience of installation and maintenance, breaks through the technical bottleneck that aviation level hinge high reliability and small size are difficult to be compatible, has been successfully applied to multiple civil aircraft luggage compartment system, and has the technical versatility of extending to spacecraft hatch mechanism.

The present invention belongs to the field of massage equipment, and specifically discloses a drive mechanism of a variable amplitude fascia gun with better structural stability, and a variable amplitude fascia gun including the above-mentioned drive mechanism. The drive mechanism provided by the present invention can realize the switching of the eccentricity of the eccentric shaft between e1 and e2, so that the piston rod produces an amplitude of A1 or A2; and the drive mechanism adopts a bearing to tightly fit the rotating shaft, so there is basically no looseness, high stability, and less noise and jitter when the motor runs at high speed. In addition, the drive mechanism is composed of fewer parts, and the rotating shaft only rotates within the arc range of the rotating fixed arc groove, and the eccentricity can be switched without moving back and forth, so the structure is compact, the space occupied is small, and the material requirements for parts are low, which is conducive to cost saving.

The stop valve comprises a valve element, a valve rod, a valve body, a valve seat, a scraper and an inflation sealing ring, the valve element is provided with a valve element cooling cavity, the valve rod comprises a first valve rod body and a second valve rod body which are coaxially connected with the two ends of the valve element, the first valve rod body is provided with a first valve rod cooling cavity, and the second valve rod body is provided with a second valve rod cooling cavity. The first valve rod cooling cavity and the second valve rod cooling cavity are both communicated with the valve element cooling cavity, the valve element and the valve rod are rotatably arranged in the valve body, the valve body is provided with a valve body cooling cavity, the valve seat is connected with the valve body, the valve seat is provided with a valve seat cooling cavity, the scraper is connected with the valve seat and abuts against the valve element, and the inflation sealing ring is connected with the scraper and the valve seat. And when inflated and expanded, the valve rod abuts against the valve element. According to the stop valve, the valve rod, the valve element, the valve body and the valve seat are cooled through the cooling medium, and the sealing reliability can be improved in cooperation with the inflation sealing ring.

The utility model relates to the technical field of sealing devices, in particular to a sealing device and a sensor for a vacuum furnace, and the sealing device is provided with a first sealing assembly and a second sealing element, through tight sealing between a first sealing piece and a first sealing cavity, the outer wall of a second connecting piece and a first pressing piece, tight sealing between a second sealing piece and the inner walls of a second sealing cavity and a third sealing cavity and tight sealing between a second sealing piece and the end portion, arranged in the third sealing cavity, of a fifth connecting piece, it is guaranteed that when a protection tube of the sensor is broken, the vacuum degree of a vacuum furnace is not distorted, and the service life of the sensor is prolonged. Therefore, a heating body and a product in the hearth of the vacuum furnace are prevented from being damaged or scrapped; and the whole sealing structure is simple, is locked and fixed through threads, and is convenient to install.

The invention provides a method and a system for producing olefin by cracking wide-fraction hydrocarbon, which are characterized in that the wide-fraction hydrocarbon, primary diluted steam and a cooling medium are mixed and then enter a gas-liquid separator (7) to be mixed, and then first separation is performed to obtain a first gas-phase material and a first liquid-phase material; mixing the secondary diluted steam with a gas stripping aid to obtain a gas stripping medium, and enabling the gas stripping medium to enter a gas-liquid separator (7) to be in countercurrent contact with the first liquid-phase material to obtain a second gas-phase material and a second liquid-phase material; mixing the first gas-phase material with the second gas-phase material to obtain a third gas-phase material; the third gas-phase material is subjected to second heating and then enters a radiation section (5) of a steam cracking device to be subjected to steam cracking, and a product containing olefin is obtained. According to the method, the wide-fraction hydrocarbon can be flexibly used for directly cracking to produce the olefin, a pretreatment device arranged in a traditional oil refining device is greatly reduced, and the olefin is produced in the shortest process with low energy consumption to the maximum extent.

The present invention relates to a common cooling system for a converter station of an offshore flexible DC power transmission project. The purpose of the present invention is to provide a common cooling system for a converter station of an offshore flexible DC power transmission project to improve the reliability and stability of the operation of the entire converter station. The technical solution of the present invention is: a common cooling system for a converter station of an offshore flexible DC power transmission project, characterized in that it includes a seawater circulation module, a fresh water circulation module and a heating equipment circulation cooling module, a plurality of heat exchangers I for heat exchange between the seawater circulation module and the fresh water circulation module are provided between the seawater circulation module and the fresh water circulation module, and a plurality of heat exchangers II for heat exchange between the fresh water circulation module and the heating equipment circulation cooling module are provided between the fresh water circulation module and the heating equipment circulation cooling module. The present invention is applicable to the field of DC power transmission.

The invention relates to the technical field of material science and engineering, in particular to a method and device for measuring stress and strain of a concrete material through a double-machine-position DIC. The device comprises a tensile test frame, a first mechanical clamp, a second mechanical clamp, a third mechanical clamp, a standard test piece, a camera mounting frame, a first CCD industrial camera and a second CCD industrial camera, a standard test piece is connected between the first mechanical clamp and the second mechanical clamp, a concrete piece to be tested is connected between the second mechanical clamp and the third mechanical clamp, and the other end of the third mechanical clamp can move vertically. The method comprises the following steps: capturing and calculating the strain of a standard test piece, deducing the stress of the standard test piece by using the elastic modulus of the standard test piece, calculating and measuring the surface strain field of a to-be-tested concrete piece by using DIC, and finally obtaining a stress-strain curve and a 2D stress-strain cloud picture of the to-be-tested concrete piece. According to the invention, non-contact, high-precision and low-cost measurement of the mechanical properties of the concrete material is realized without a force sensor.

A mounting frame for reciprocating razor includes a frame body, a frame arm at the upper part of the frame body for supporting a reciprocating head, and a plurality of plug structures at the lower part of the frame body and corresponding to the receiving channels on the handle shell, the plug structure includes a notch plug protruding from the lower bottom surface of the frame body, a plug connector fixed to the lower bottom surface of the frame body or the lower part of the notch plug and extending downward to be inserted into the receiving channel, the plug connector is provided with a locking portion cooperating with the stopper in the receiving channel, and the plug connector has a movement guide position and a locking position when inserted into the receiving channel. The upper and lower functions are divided, the material requirement of the plug connector is reduced, that is, the plug connector and the frame body are not integrally formed, a metal material with wear resistance and high rigidity which is different from the material of the notch plug can be used, the plug connector of the metal material is shaped by stamping and bending during production, the production cost is low, the number of abrasives is reduced, the universal compatibility of the mounting frame is improved, and maintenance and adjustment are facilitated.

The present invention relates to an engine pressure relief protection system and a vehicle, which comprises: a hard pipe, a side wall of which is provided with a valve seat, and the valve seat is used to install a pressure relief valve; a first hose, one end of which is connected to one end of the hard pipe; a second hose, one end of which is connected to the other end of the hard pipe; a pressure relief valve, which is installed on the valve seat; a supercharger interface, one end of which is sleeved on the inner wall of one end of the first hose; a throttle interface, one end of which is sleeved on the inner wall of one end of the second hose. The first hose and the second hose can be bent according to the actual installation environment, and the path can be changed to adjust the trajectory to improve flexibility; the hard pipe can provide a stable and effective installation valve seat for the pressure relief valve; at the same time, when used as a skeleton, the material requirements of the first hose and the second hose can be reduced; and the air pressure resistance strength requirements in the engine pressure relief protection system can be guaranteed.

This utility model discloses a novel locking pop-out structure, relating to the technical field of locking buckle structures. The utility model includes a frame and a filter bottle disposed within the frame, and further includes: an unlocking pop-out part disposed on the frame for popping out the filter bottle; and a locking part installed on the frame and the filter bottle for fixing the filter bottle to the frame. The unlocking pop-out part automatically pops the filter bottle out of the frame after unlocking the locking part. The unlocking pop-out part includes an unlocking component disposed on the front side of the frame. This utility model, by incorporating an unlocking pop-out part, solves the problem of existing locking pop-out structures requiring the filter bottle to be rotated in the opposite direction during unlocking. The filter bottle rotates relative to the rotating mechanism at the bottom of the frame, and because of the sealing ring, rotation is laborious, wasting operator effort and affecting filter bottle replacement efficiency.

The invention provides a microscope objective turntable and a microscope, and the microscope objective turntable comprises a support, a rotating sleeve which is rotatably connected to the support, a turntable which is fixed on the rotating sleeve, and a supporting member which is respectively connected to the support and the turntable. The supporting piece comprises a first inner ring fixed to the support, a first outer ring which is fixed to the rotating disc and forms a first roller path with the first inner ring in an enclosing mode, and a plurality of first balls contained in the first roller path, and further comprises an annular retainer contained in the first roller path. The annular retainer is provided with a plurality of positioning holes distributed in the circumferential direction of the first roller path at intervals, and the first balls are assembled in the positioning holes in a one-to-one correspondence mode. The supporting piece is a four-point contact bearing, the precision and rigidity are higher, the precision of the microscope objective table can be higher, and the finished product performance of the microscope objective table is improved.

The present disclosure provides a thermal ablation catheter with a thermocouple, comprising: a thermocouple temperature measuring end, which is in a sandwich structure, including a first electrode, a second electrode and a sandwich weld, wherein the free ends of the first electrode and the second electrode face oppositely and are parallel to each other and close to each other, and are conductively connected through the sandwich weld; a liner, which is a hollow structure for accommodating a thermal ablation component, and the thermocouple temperature measuring end is arranged on the outer circumferential surface of the liner; a heating resistance wire, which is wound around the outer circumference of the liner in a helical shape; wherein the thermocouple temperature measuring end is arranged on the liner between two adjacent turns of the heating resistance wire, the outer surface of the thermocouple temperature measuring end and the outer surface of the heating resistance wire are on the same circumferential surface, the first electrode, the second electrode and the heating resistance wire are arranged in parallel, the thermocouple temperature measuring end is centrally symmetrical, and the first electrode and the adjacent thermal resistance wires, the second electrode and the adjacent thermal resistance wires are centrally symmetrical about the center point of the thermocouple temperature measuring end.

An underwater junction box assembly is characterized in that slidable end cover assemblies are arranged at ports of two sides of an outer shell, the slidable end cover assemblies are matched with the outer shell to form a first sealing cavity in a surrounding manner, a second sealing cavity is formed in one end, in contact with a cabin penetrating part, of the interior of an external cable, and the two sealing cavities are filled with liquid insulating materials; according to the scheme, the principle of independent sealing is adopted, the first sealing cavity, the second sealing cavity and the external seawater environment are divided into three different areas, the first sealing cavity achieves volume change through a slidable end cover assembly, and the second sealing cavity achieves volume change through deformation of an oil-filled hose elastomer in an external cable. Therefore, the effect of compressing liquid to generate pressure is achieved; the pressure in the sealing cavity and the external seawater pressure are balanced, at the moment, stress analysis is carried out on parts of all parts of the junction box, the pressure difference is very small, the requirements for materials and strength of metal structural parts are greatly reduced, and the product reliability is improved.

The utility model provides a thermal runaway flue gas treatment device and energy storage equipment, and mainly solves the problem of potential safety hazards caused by thermal runaway of an existing lithium battery. A liquid treatment tank of the thermal runaway flue gas treatment device is connected with a liquid inlet pipeline, the liquid inlet pipeline is used for introducing external water into the liquid treatment tank, and solid alkali in the liquid treatment tank is dissolved by water to form an alkali solution. When the battery works normally, only solid alkali is placed in the liquid treatment tank, the requirement of the solid alkali on the material of the liquid treatment tank is not high, so that the manufacturing cost of the device is relatively low, meanwhile, only solid alkali is placed in the liquid treatment tank, the weight of the whole liquid treatment tank is small, and the liquid treatment tank is very convenient to mount and dismount. When the thermal runaway of the battery occurs, the liquid inlet pipeline introduces external water into the liquid treatment tank to form an alkali solution, and the alkali solution effectively treats the thermal runaway flue gas.