40results about How to "Achieve self-sealing effect" patented technology

The invention discloses an underwater metal structure defect detecting probe based on an alternating current electromagnetic field. The underwater metal structure defect detecting probe mainly comprises a gland, a bottom cover, a cylinder, a seal joint, an O ring, a detection coil, an excitation circuit, a conditioning circuit, a U-shaped magnetic core, an excitation coil, a seal gasket and a top cover, wherein the detection coil is mounted in a central groove of the bottom cover and connected with the conditioning circuit; the conditioning circuit is mounted in a clamping groove I in the cylinder; the excitation circuit is mounted in a clamping groove II in the cylinder and connected with the excitation coil; the bottom cover is tightly pressed to the bottom of the cylinder by the gland; water isolation space is formed among the bottom cover, the O ring and the cylinder, and a self-sealing effect is realized. The underwater metal structure defect detecting probe has the benefits as follows: the probe for detecting defects of an underwater metal structure is designed by the aid of an alternating current electromagnetic field detection technology, the problem about underwater sealing and the problems of signal attenuation and the like can be solved effectively, and the defects of the underwater metal structure can be detected.

The invention discloses a metal seal three-eccentric center butterfly valve. The valve is characterized in that the inner diameter of a metal seal ring is larger than the diameter of a mounting boss,a floating space is formed between the metal seal ring and the mounting boss, two end faces of the metal seal ring are in sliding seal fit with a butterfly plate and a limiting part, and multiple through holes are formed in the limiting part, and communicate with the floating space. The butterfly valve has the advantages that due to the floating space, the metal seal ring can slightly move and elastically deform in the radial direction, the floating space can better adapt to a valve base seal face, when the floating space is in seal fit with the valve base seal face, the better seal effect isachieved, meanwhile, a medium can pass through a through hole to enter the floating space, medium pressure is provided for the metal seal ring, the self seal effect is achieved, the seal effect of thespace and the valve base seal face can be further ensured, dual-way seal is achieved, and no leakage exists.

The invention discloses a preparation method of a self-sealing planar solid oxide fuel cell, wherein the preparation method comprises the following steps: (1) processing a metal connecting pole having a gas passageway structure; (2) allowing a porous metal layer and the metal connection pole to form a whole; (3) trimming the upper surface of the whole formed by the porous metal layer and the metal connection pole, to obtain a surface for spraying; (4) preparing an anode layer on the surface of the porous metal layer by a spraying method; (5) preparing an electrolyte layer on the surface of the anode layer by a spraying method; and (6) preparing a cathode layer on the surface of the electrolyte layer by a spraying method. Because the battery connecting pole and the porous stainless steel substrate are subjected to edge sealing treatment in advance, the self-sealing effect is realized after preparation of a battery is completed, and the problem of the sealing of the battery is effectively overcome.

The invention relates to a narrow-deep type prefabricated drainage gutter, which comprises a main body and a cover plate which are mutually connected, wherein the main body comprises a tenon which is arranged at one end, and the other end of the main body is provided with a groove which is in corresponding to the tenon of an adjacent gutter; a groove, in which a cover plate is embedded, is formed in the top of the main body; and beams are arranged at two ends of the top. Compared with the prior art, the prefabricated drainage gutter disclosed by the invention has the advantages of being small in occupied area, high in construction speed, capable of achieving self-sealing and self-cleaning effects and the like.

The invention relates to a self-sealing instrument pipe fitting. The self-sealing instrument pipe fitting comprises an outer cylinder, the two ends of the outer cylinder are connected with a pipelinerespectively, the pipeline is inserted into the outer cylinder, a circle of abutting plate is arranged in the middle of the interior of the outer cylinder, and a sealing device is arranged on the inner wall, making contact with the pipeline, of the outer cylinder. The sealing device comprises a plurality of air bag films, a pressurizing device and a rubber sealing belt, the pressurizing device isused for inflating and deflating the air bag films, the air bag films are fixed to the inner wall of the outer cylinder, the rubber sealing belt is connected with the outer side faces of the air bag films, and every two adjacent air bag films are separated through a partition plate. The two ends of the outer cylinder are provided with non-closed sealing anti-disengaging rings, the two ends of thesealing anti-disengaging rings are connected through protruding connecting tables, and screw holes and tightening nuts are arranged on the connecting tables. Double sealing is conducted through the sealing device and the sealing anti-disengaging rings, operation is easy, and the sealing effect is good.

The invention discloses a light-transmitting box-type transformer, and belongs to the field of transformers. The light-transmitting box-type transformer comprises a transformer body with a top plate and a bottom plate respectively installed at the upper and lower ends. A sleeve is connected on the upper end of the transformer body. The sleeve comprises an insulating tube body and a plurality of insulating umbrellas. A photochemical layer is connected at the inner wall of each insulating umbrella. A light-transmitting layer wraps the surface of each insulating umbrella. The light-transmitting layer comprises a healing layer and a transparent layer. A transparent self-healing body is arrange in the healing layer. The photochemical layer and the light-transmitting layer are respectively arranged on the inner wall and the outer surface of the transformer sleeve, and the healing layer is arranged in the light-transmitting layer. When the inner wall of the transformer sleeve cracks and expands to the light-transmitting layer, the transparent self-healing body in the healing layer is utilized to fill the gap to achieve the self-sealing effect. In addition, the light beam emitted by the photochemical layer is emitted outward from the gap through the transparent self-healing body so that maintenance personnel can more easily observe the crack position and take maintenance measures in time.

The invention discloses a drainage pipeline. The drainage pipeline comprises a pipeline main body, one or more self seal assemblies are mounted on the pipeline main body, and are mounted in the lengthdirection of the pipeline main body, each self seal assembly comprises two seal devices, each seal device comprises a fixed ring and a movable ring, a compression air bag part is mounted between eachmovable ring and the corresponding fixed ring, and is provided with an air storage cavity, the fixed rings are fixedly mounted on the pipeline main body, the movable rings are mounted on the pipelinemain body in a sliding manner, the compression air bag parts wrap the pipeline main body, a limiting part is mounted between two seal devices, and is mounted on the pipeline main body in a wrapping manner, through the limiting part, the compression air bag parts are limited from recovering deforming, according to the drainage pipeline, after a gap appears in the pipeline, the pipeline can be sealed first time, the self seal aim is achieved, the resource waste can be greatly reduced, and the use is more environment-friendly.

The invention provides a bamboo joint tube type solid oxide fuel cell/electrolytic cell with one self-sealed end and a preparation method of a cell/electrolytic cell stack thereof, and the preparation method comprises the following steps: taking ceramic powder with different properties in a hydrogen environment as a raw material for preparing a support body to obtain a tubular metal ceramic support body blank with a closed end; and then preparing an insulating layer on the surface of the annular tube wall of the support body blank, and preparing a plurality of single batteries connected in series on the surface of the insulating layer, so that a plurality of single battery structures are prepared on the surface of the metal ceramic circular tube-shaped support body. By adopting the screen printing technology, the film forming speed of a plurality of single cell series structures on the support body is effectively improved, the preparation efficiency is effectively improved, the preparation method is simplified, the preparation cost is saved, and commercialized popularization of the solid oxide fuel cell is facilitated.

The invention discloses a preparation method of a modified cadmium telluride thin film solar cell, which comprises the following steps: (1) preparing a solar electrode slice; (2) covering the upper surface of the solar electrode slice prepared in step (1) with a back contact layer transition layer, and bonding a backplane to the back contact layer transition layer to get a prefabricated component,wherein the backplane is 2.5D toughened glass; and (3) laminating the prefabricated component at high pressure under vacuum, and removing a vacuum bag, thus obtaining a modified cadmium telluride thin film solar cell. The invention provides a preparation method of a modified cadmium telluride thin film solar cell. The cadmium telluride thin film solar cell prepared by the invention has the characteristics of good self-sealing effect, rounded corners, good overall visual effect, wide application range, low use cost, and the like.

The invention relates to the technical field of dust-discharging valves, and discloses a self-sealing type double-layer horizontal rotating disc dust-discharging valve, which comprises a dust-discharging valve body, a dust-discharging groove is formed in the top of the dust-discharging valve body, a first partition plate is fixedly mounted in the dust-discharging groove, a second partition plate located at the bottom of the first partition plate is fixedly mounted in the dust-discharging groove, the bottom of the dust-discharging valve body is fixedly connected with a discharging pipe communicating with the dust-discharging groove, the bottom of the discharging pipe is fixedly connected with a rotating motor, and an output shaft of the rotating motor is fixedly connected with a rotating shaft which sequentially penetrates through the dust-discharging valve body, the second partition plate and the first partition plate and extends to the top of the first partition plate. According to the self-sealing type double-layer horizontal rotating disc dust-discharging valve, the problems that a disc-type dust-discharging valve is simple in structure and small in occupied space, has high adaptability to the characteristics of dust and is wide in application range, however, the self-sealing performance of the existing disc-type dust-discharging valve is low, a sealing strip is abraded in the using process, and consequently, the sealing performance is reduced are solved.

The invention relates to a self-shearing pin for heat-insulation building formworks. The self-shearing pin is suitable to be used as a fixing connector for the heat-insulation building formworks and wood ridges of connecting formwork frames and comprises an iron pin, a modified ABS (acrylonitrile butadiene styrene) pin rod and an adhesive layer. The rear end of the iron pin is adhered with the front end of the modified ABS pin rod by the adhesive layer, a conical pin head is arranged at the front of the iron pin, and a conical connecting head is arranged at the rear end of the iron pin; a pin cap is arranged at the rear end of the modified ABS pin rod, a pin rod is arranged in the middle of the modified ABS pin rod, and a conical connecting fork is arranged at the front end of the modified ABS pin rod; water guide grooves are formed in the conical connecting fork; a center water guide hole is formed in the center of the pin rod and is communicated with the water guide grooves formed in the conical connecting fork.

The invention discloses a self-sealing loading unit and an open type load box structure based on the self-sealing loading unit. According to the self-sealing loading unit and the open type load box structure based on the self-sealing loading unit, an upper steel sleeve and a lower steel sleeve are welded, a bottom plate is welded to the bottom face of the lower steel sleeve, a sealing ring is arranged above the bottom plate, the edge of the sealing ring is arranged between the upper steel sleeve and the lower steel sleeve, the upper steel sleeve, the lower steel sleeve, the sealing ring and the bottom plate are combined to form a loading cavity, a lining is placed above the sealing ring, the bottom face of the lining is connected with the sealing ring, the sealing ring moves up and down to enable the loading cavity to ascend or descend, the lining is driven to ascend or descend, loading units, upper base plates installed above the loading units and lower base plates installed below the loading units are combined into loading unit assemblies, the multiple loading unit assemblies are annularly arranged, and reinforcing rings are welded to the upper portions and the lower portions of the loading unit assemblies. According to the self-sealing loading unit, the working stability of the loading units is improved, the modular structure of the open type load box is realized, the production and installation efficiency of the load box is improved, and the working stability and reliability of the load box in a self-balancing static load test system are ensured.

The invention discloses an anticorrosion structure of a return outlet of the trumpet tube. A parallel guide tube, an inclined guide tube and the trumpet tube form an electric communication whole body,the whole body is not in contact with a backflow groove, a channel for electrochemical corrosion between the trumpet tube and the backflow groove is cut off directly, by cooperation of a ceramic mounting plate, a first ceramic cushion block, a first rubber sealing pad, a carrying frame, a second rubber sealing pad and a second ceramic cushion block, mounting carrying, sealing protection and automatic reinforcing are carried out, the problem that a position where a trumpet tube is connected with a backflow groove in the prior art is corroded quite easily is solved, and purposes of relieving the corrosion rate of the position where the trumpet tube is connected with the backflow groove and reducing the maintaining and changing frequency are achieved.

The invention discloses a spliced type buried pipeline. The pipeline includes more than one cylindrical pipeline body, an elastic connecting part is arranged between every two adjacent pipeline bodies, the middle of each pipeline body is provided with a pipeline cavity, the two sides of each pipeline cavity are provided with openings, the two sides of each pipeline body form assembly convex partsrespectively, the assembly convex parts are fixed in the elastic connecting parts, the middle of each elastic connecting part is provided with a transition channel, and when the elastic connecting parts are in natural states, the middles of the transition channels are sealed. The pipeline is especially suitable for being buried in the ground, can move rapidly after being cut off and achieves automatic sealing, not only water can be prevented from flowing out continuously, but also the pipeline can be quickly away from an operation area, and the pipeline is safer.

The invention discloses an electromagnetic actuator and an electromagnetic actuating system, and belongs to the technical field of electromagnetic valves.The electromagnetic actuator comprises a valve body, a valve seat and a valve element, the valve body is provided with a mounting hole and a middle hole which are communicated, and the hole diameter of the mounting hole is larger than that of the middle hole; the valve seat is mounted in the mounting hole, and the valve seat is provided with a first through hole communicated with the middle hole; a valve element is movably arranged in the middle hole in a penetrating mode, and one end of the valve element can abut against the valve seat and seal the first through hole. A groove communicated with the first through hole is formed in the valve body and/or the valve element, the depth direction of the groove is parallel to the extending direction of the valve body, and the groove is used for containing high-pressure fluid so that the high-pressure fluid can extrude the valve element to abut against the valve body or extrude the valve body to abut against the valve element. The electromagnetic actuator and the electromagnetic execution system provided by the invention have good sealing performance, and the probability of leakage is reduced.

The invention relates to the technical field of casting material treatment and discloses an in-furnace heat adjusting system for a horizontal high-temperature kiln. The system comprises a furnace body, wherein a transverse sealing plate is arranged in the furnace body, the sealing plate divides the furnace body into a first chamber and a second chamber, the sealing plate is uniformly provided with a plurality of communicating pieces, a side part of the furnace body is provided with a communicating part, and the communicating part communicates with a first furnace body and a second furnace body. The communicating part comprises a closing box and a sand discharging pipe, and the sand discharging pipe communicates with the lower part of the closing box; the sand discharging pipe is provided with a partition plate along a length direction, the partition plate divides the sand discharging pipe into a sand discharging cavity and an air cavity, the air cavity communicates with an air source, the sand discharging cavity is internally provided with a plurality of exhaust parts, the exhaust part comprises an outer pipe and an inner pipe, the upper end of the outer pipe is closed, the inner pipe is located in the outer pipe and two ends of the inner pipe communicate with the outer pipe and the air cavity respectively, and an air outlet is formed in the side part of the outer pipe; a discharge opening is formed in the side part of the furnace body, and a communicating part is arranged at the discharge opening and the length of the sand discharging pipe is greater than three times of the height of the sand discharging pipe. By adopting the system, an effect of saving energy sources can be achieved.

The invention discloses a continuous cleaning glass instrument cleaning device for school experiments, and belongs to the field of experimental apparatuses, the continuous cleaning glass instrument cleaning device comprises a return conveying belt, a sliding guide rail and bearing tables, the return conveying belt is located on the left side of the sliding guide rail, the sliding guide rail and the return conveying belt are located on the same horizontal plane, and a plurality of bearing tables are placed on the sliding guide rail; a plurality of bearing tables can stably and horizontally move on a sliding guide rail, the tail end of the sliding guide rail is connected with a return conveying belt through an adapter plate, a blocking strip is installed on the top of the return conveying belt, the small support and the large support are good in compatibility, can be matched with most experimental instruments and can be matched with a spraying arm to conduct inside and outside cleaning and drying on the experimental instruments, and the cleaning effect is good; assembly line type operation is adopted, the number of the bearing tables can be increased according to needs, the bearing tables circulate anticlockwise on the whole equipment, and full-automatic continuous cleaning is achieved.