61results about How to "Avoid risk of rupture" patented technology

A transfusion pump comprises a casing, a driving module, a piston, a pressure sensing module and a control module. The casing comprises a containing portion and a guide portion. The containing portion is used for containing a transfusion bag, and a liquid outlet is arranged in the lateral wall. The driving module is arranged at one end of the guide portion far away from the containing portion, and the driving end of the driving module can reciprocate along the guide portion. The piston is arranged in the casing and connected with the driving end. The pressure sensing module is arranged on the lateral wall of the piston far away from the driving module to obtain a pressure value between the transfusion bag and the piston. The control module, the driving module and the pressure sensing module are in communication connection. The control module receives the pressure value between the transfusion bag and the piston and measured by the pressure sensing module and controls the driving module according to the pressure value. When the pressure value is larger than preset pressure value, the control module controls the driving module to stop. When the pressure value is smaller than or equal to the preset pressure value, the control module controls the driving module to proceed at constant speed.

The invention discloses a system for monitoring reactor core parameters of a nuclear power plant. The system comprises measurement assemblies and a signal processing unit, wherein the measurement assemblies comprise multiple first measurement assemblies and multiple second measurement assemblies, each of the first measurement assemblies and the second measurement assemblies comprises multiple self-powered neutron detectors for collecting reactor core neutron-flux density in real time, and the multiple self-powered neutron detectors are distributed in the axial direction and/or radial direction along the periphery of the reactor core of the nuclear power plant; the signal processing unit comprises a reactor core neutron-flux density signal processing cabinet, and is used for receiving reactor core neutron-flux density signals collected by each self-powered neutron detector, processing the reactor core neutron-flux density signals and sending the reactor core neutron-flux density signals to a reactor core online monitoring system, so that the reactor core condition is monitored in real time. According to the system, the integrated measurement assemblies are adopted, so that the space occupied by equipment is reduced, and later maintenance and replacement are facilitated; real-time continuous monitoring for in-reactor neutron flux can be realized, measurement information is more reliable, and the accuracy rate is high.

The invention discloses a plastic casing and a preparation method. The preparation method of the plastic casing comprises the following steps that step 1, injection molding is performed, specifically,optical-grade transparent plastic is adopted, meanwhile, injection molding is performed by the aid of a textured metal mold core, and the plastic casing in a required shape is formed; step 2, functionalization treatment is performed; step 3, machining by the aid of a numerically-controlled machine tool is performed, specifically, the hardened plastic casing is subjected to shape machining by theaid of the numerically-controlled machine tool; step 4, film coating is performed, a reflecting layer is prepared, specifically, the inner surface of the plastic casing machined by the numerically-controlled machine tool is coated with the film in a magnetron sputtering, CVD or evaporation manner, and the reflecting layer is formed; step 5, a shading layer is prepared, specifically, the shading material completely covers the inner surface of the plastic casing with a related technology, and the shading layer is formed; and step 6, the required plastic casing is formed finally through steps 1 to 5. According to the method, a plurality of problems existing in a technology for producing the plastic casing from the optical-grade transparent plastic are solved.

The invention discloses a multi-layer net shaped staggered rib plate type hydrogen storage reaction device. The device is of a three-dimensional structure and comprises a housing, wherein the upper end and the lower end of the housing are correspondingly connected to an upper sealing head and a lower sealing head through flange structures in a sealing manner; a heat exchanging pipe is arranged inthe center of the housing; a plurality of layers of circumferential rib plates are sequentially arranged at the outer part of the heat exchanging pipe; a radial rib plate is arranged between two adjacent layers of circumferential rib plates; a reaction bed layer is arranged in each of the spaces formed by the radial rib plates and the circumferential rib plates; a tubular plate is arranged betweenthe upper sealing head and the housing, and an air phase buffering chamber is formed between the tubular plate and the upper sealing head; a heat exchanging liquid inlet which communicates with the heat exchanging pipe, an air phase inlet which is connected to the air phase buffering chamber and an air safety valve are arranged on the upper sealing head. The device is applicable to high reactionheat effect chemical reaction such as dehydrogenation or hydrogenation of metal hydride. The device has the advantages of being high in heat transfer rate, simple to operate, compact in structure, andconvenient to maintain.

The invention provides an infusion control system and method for adjusting an infusion amount based on a urine output. The infusion control system comprises a microprocessor unit, an infusion pump, a urine volume and urine flow velocity measuring unit, an infusion amount and infusion velocity measuring unit, an operation monitoring module, a man-machine interface and the like. The infusion pump acts on an infusion tube for controlling the infusion velocity; the microprocessor unit receives a measurement result from the urine velocity measuring unit, controls the infusion pump to adjust the infusion velocity according to the urine velocity in accordance with a body fluid intake and output balance principle; the urine volume and urine flow velocity measuring unit is applied to a urine bag and used for measuring a weight GN of the urine bag in real time and calculating to obtain a generated urine flow velocity VN; and the operation monitoring module is responsible for monitoring if the system works normally, as well as alarming and triggering protective actions in case of anomalies. By adopting the balanced infusion control system and method provided by the invention, a balance between the infusion amount and the urine output can be guaranteed.

The invention discloses a repair method for a graphite dusk. The method is characterized in that: first crack detection is performed on the surface of the graphite disk; when the first crack width ofthe surface of the graphite plate satisfying the first preset crack width is detected, a repair layer is prepared on the surface of the graphite plate, and repair is performed on the graphite plate. Detection is performed on the first crack of the graphite plate, repair is performed on the graphite plates which has the first crack, so that it is guaranteed that the first crack on the surface of the graphite disk can be covered and filled, the graphite plate being eroded by the graphite plate exposure is avoided, the quality of the product influenced by doping carbon is reduced, the preparing properties of the semi-conducting material is improved, the service life of the graphite plate can be prolonged simultaneously, and the risk of the crack of the graphite plate, which is caused by the stress accumulation is prevented.

The invention belongs to the technical field of cryoablation, and particularly relates to a cryoablation catheter. The cryoablation catheter comprises a catheter body, a handle, a balloon, a sealing assembly and a first spraying hole assembly arranged at the far end of an incoming flow cavity; a freezing spray pipe provided with a second spray hole assembly is arranged in the balloon, and the incoming flow cavity is arranged in a displaceable mode so as to drive the sealing assembly which is located in a connecting cavity of the freezing spray pipe and can be opened or closed to separate or communicate the incoming flow cavity and the connecting cavity of the freezing spray pipe. The incoming flow cavity is arranged in a displaceable manner, so that the cryoablation catheter has the same pipeline structure during precooling and freezing, the balloon is folded and is not frozen during precooling, and an air inlet pipeline is pushed into the frozen balloon during cryoablation to expand the frozen balloon for cryoablation.

The invention discloses a lifting device for bearing a wafer. The lifting device comprises a lifting platform which is used for bearing the wafer and can move up and down, wherein the lifting platformis provided with at least one first through hole and at least one second through hole which penetrate through the lifting platform, at least one first through hole forms an annular shape, the interior of the annular shape can accommodate the horizontally placed wafer, and at least one second through hole is located in the annular shape; a first wafer supporting piece which is located on the uppersurface of the lifting table and in the annular interior; a second wafer supporting piece which penetrates through the lifting table through the second through hole, wherein the lifting table can move up and down along the second wafer supporting piece, when the lifting platform descends, the wafer is supported by the second wafer supporting piece, and when the lifting platform is lifted, the wafer is supported by the first wafer supporting piece; and a limiting structure which penetrates through the lifting table through the first through hole, wherein the upper surface of the limiting structure is higher than the upper surface of the second wafer supporting piece, the lifting table can move up and down along the limiting structure, and the limiting structure surrounds the periphery of the wafer and is used for limiting horizontal movement of the wafer.

The invention discloses a display panel and a reinforcing method thereof, and a display device. The display panel comprises a substrate; at least one buffer layer arranged on one side of the substrate; a display function layer arranged on one side, far away from the substrate, of the buffer layer; a blocking function layer which is arranged on the side, away from the buffer layer, of the display function layer and covers the outer side face of the display function layer; and an adhesive layer arranged on the outer side surfaces of the substrate and the buffer layer. The problem that a thinned glass substrate is prone to generating microcracks in the cutting process can be solved, so that the edge strength of the flexible display panel is improved, and the curling reliability of the flexible display panel is improved.

The invention discloses a smelting furnace for producing copper products. The smelting furnace comprises a feeding box, a crucible and a furnace body. The furnace body is arranged below the feeding box. The crucible is fixedly connected into the furnace body. The outer side of the furnace body is fixedly connected with a furnace tilting rod. The furnace body is fixedly connected to a base. One end of the base is fixedly connected with a first sleeve, and a supporting frame is movably inserted into the first sleeve. The top end of the supporting frame is fixedly connected with the feeding box. The high-temperature smelting furnace for producing the copper products is simple in structure, the phenomenon that workers make close contact with the high-temperature smelting furnace is avoided by adding the combination of an electric resistance wire, a leaking net and a cam, uniform feeding is achieved, heating is conducted while stirring is performed, block-shaped materials which are added can be fully preheated rapidly, crushed materials can sink to the bottom through rotation of the cam and further leak out of the leaking net to enter the crucible, automatic screening in the feeding process is realized, and the crucible crushing danger caused by improper manual operation is avoided.

The invention relates to an aluminum shell PTC (positive temperature coefficient) brake resistor which comprises a PTC core, an upper contact piece, a lower contact piece, a contact plate, a leading-out conductor, a positioning frame, an aluminum shell and an insulation sleeve. The upper surface and the lower surface of the PTC core are fitted with the upper contact piece and the lower contact piece and electrically connected with the outside through the leading-out conductor welded at one end of the contact plate, the vertically laminated PTC core and the contact pieces are positioned and fixed by the positioning frame, the insulation sleeve sleeves the outer side of the PTC core, and then the PTC core is embedded into the aluminum shell and fixed. Compared with the prior art, the brake resistor has the advantages of compact part structure, easiness in machining, good mechanical performance and the like.

The invention discloses a combustor with glass and of a complex structure. The combustor with glass and of the complex structure comprises a bottom shell and an upper cover. The bottom shell and/or the upper cover are/is made of glass. An upper end opening of the bottom shell is covered with the upper cover. A flame distribution base made of metal and a flame cover made of metal are sequentially arranged between the bottom shell and upper cover from bottom to top. Air inlets exposed out of the bottom of the bottom shell are formed in the flame distribution base. An outer circular flame outletis formed between the bottom shell, the upper cover and the flame cover. An outer circular channel enabling the outer circular flame outlet to communicate with the air inlets are formed between the bottom shell, the flame distribution base and the flame cover. A central hole is formed in the upper cover. Inner circular flame outlets through which flames can come out of the central hole are formedbetween the flame distribution base and the flame cover. The flame distribution base communicates with the flame cover to form an inner circular channel enabling the inner circular flame outlets to communicate with the air inlets. The bottom shell and the upper cover are made of glass and located on the outer side. The combustor with glass and of the complex structure has the characteristics of being high in corrosion resistance, resistant to color changes and easy to clean, and an outer shell is formed to protect internal metal components.

The invention provides a stent conveying system. The stent conveying system comprises an inner pipe, an outer pipe and a guide rail lock assembly. A shifting piece assembly and a handle assembly sleeve the outer portion of the guide rail lock assembly. The tail end of the inner pipe is fixedly connected with the tail end of the guide rail lock assembly, and a rear release assembly and a flushing assembly are further arranged at the tail end of the guide rail lock assembly. The outer pipe is arranged at the front end of the inner pipe in a sleeving mode, and the tail end of the outer pipe is connected with a connecting rod in the shifting piece assembly through a detachable lock catch structure. The handle assembly sleeves the outer portion of the shifting piece assembly. Internal threads of a rotating handle in the handle assembly are meshed with external threads of a shifting piece in the shifting piece assembly. The stent conveying system is simple in structure and excellent and reliable in performance. In the release process of a covered stent, the covered stent can be stably and accurately released in the mode of combining rotary accurate release and sliding rapid release, andthe problem that due to the fact that the covered stent blocks blood flow for a long time, a blood vessel or an aneurysm is broken can be avoided; and meanwhile, the problem that the release accuracyof the stent is influenced by the wind bag effect can be avoided.

The invention relates to the field of vehicle accessories, and discloses a vehicle-mounted lock structure, which is used for installation and fixation between a display panel and a center console, including at least one buckle end and a rotating arm connected to the buckle end. arm, wherein the buckle end includes a buckle block, the back of the buckle block is provided with a buckle-in preload elastic arm, and the buckle-in preload spring arm is provided with an ejection spring arm. The adoption of the technical solution has a small assembly and disassembly force, can effectively avoid the risk of the display screen body being broken due to disassembly and assembly, and has a simple structure and low cost.

The invention relates to the technical field of medical instruments, and discloses a transcatheter interventional artificial valve. The artificial valve comprises a stent, a sealing membrane, a tissueleaflet, a skirt pocket frame and an outer skirt pocket, wherein the stent is of an annular structure capable of expanding and contracting in a radial direction; the sealing membrane is arranged on an inner surface of the stent; the tissue leaflet is arranged inside the stent, and an outer edge of the tissue leaflet is sewn on an inner surface of the sealing membrane; the skirt pocket frame is arranged on an outer side of the stent in a protruding mode; the outer skirt pocket is arranged on an outer surface of the stent, an upper end of the outer skirt pocket is sewn with the stent, a lower end of the outer skirt pocket is sewn with the skirt pocket frame, and the outer skirt pocket can be unfolded along with the skirt pocket frame in a valve releasing process. The artificial valve can effectively reduce valve perivalvular leakage and prevent backflow.

The invention discloses a colored plastic mobile phone rear cover manufacturing process, which is characterized in that compared with the prior art, a colored plastic mobile phone rear cover (6) produced by the colored plastic mobile phone rear cover manufacturing process is provided with a hole site (7) for mounting a camera, and four corners and four sides of the colored plastic mobile phone rear cover (6) are provided with fixedly connected reinforcing ribs (8); the reinforcing ribs (8) and the colored plastic mobile phone rear cover (6) are seamlessly and fixedly connected or integrally formed, the colored plastic mobile phone rear cover (6) sequentially comprises a shading layer (5), a reflecting layer (4), a shell layer (1), a texture layer (2) and a functional coating (3), and according to actual requirements, L * a * b * values of the colored plastic mobile phone rear cover (6) comprise a * and b * values of the shell layer (1) and L * values of the reflecting layer (4). A series of problems existing in the colored plastic mobile phone rear cover manufactured by the mobile phone shell rear cover manufacturing process are solved.

The invention provides a double-triangle polytetrafluoroethylene sealing O ring, the cross section of the polytetrafluoroethylene sealing O ring is a quadrangle formed by two isosceles triangles witha common bottom edge, the polytetrafluoroethylene material serving as the sealing O ring has the defect that the material is hard, due to the fact that the texture of a quartz window is brittle, if face sealing is used like a silica gel O ring, needed pressure is quite large, the quartz window can be easily crushed by the force, while two contact ends of the O ring are machined into triangles, thesurface contact is changed into the line contact, the pressure intensity is greatly increased under the same pressure, the window can be sealed without need of large force, and the problem that the window is crushed due to too large pressure is solved.