71 results about "Double wall" patented technology

The utility model relates to a light-transmitting guide pipe structure of a light-transmitting concrete outer wall, which is used for being matched with construction of a non-contact double-layer outer wall and forming a light guide channel penetrating through the double-layer outer wall at the same time after the construction is completed. The light-transmitting guide pipe structure comprises a first sleeve, a second sleeve and a transparent light guide rod; one end of the first sleeve is connected to one end of the second sleeve in a sleeved mode, and a pipe cavity with the inner diameter decreasing from the first sleeve to the second sleeve is formed in the pipe. The length and the shape of the transparent light guide rod correspond to those of the tube cavity; the first sleeve and the second sleeve are sequentially matched with the double-layer wall body for construction and connection, while sequential construction of the double-layer wall body is not affected, a lateral light shielding channel is formed after the double-layer wall body is used, and then a light guide channel penetrating through the double-layer wall body at the same time is formed after the transparent light guide bar is inserted into the double-layer wall body; the limitation that a conventional light-transmitting rod can only be applied to a single-layer concrete wall is eliminated, and the application scene of the light-transmitting concrete wall is expanded.

The invention relates to the technical field of gas engines, and particularly discloses an anti-deformation and high-cooling-efficiency backflow combustion chamber large elbow, the sections of a first layer wall and a second layer wall of the large elbow are arc-shaped, the first layer wall is arranged outside the second layer wall, one end of the first layer wall and one end of the second layer wall are fixedly connected into a whole, and the other end of the first layer wall is arranged outside the second layer wall. The other end of the first layer wall and the other end of the second layer wall are clamped, a space capable of moving relative to each other is formed in the clamping position, a plurality of annular grooves facing the second layer wall are formed in the first layer wall, the annular grooves are attached to the side, facing the first layer wall, of the second layer wall, and a cavity between the first layer wall and the second layer wall is divided into a plurality of impact diffusion cavities through the annular grooves. According to the invention, the gap between the double walls is not changed, the problem of deformation caused by stress due to inconsistent swell capacity of the double walls is prevented, the cooling protection effect of the inner wall is enhanced, cracks caused by too high temperature of the large elbow are prevented, the overall stress is small, cracks are not easy to appear at welding joints, tight connection is realized, and air leakage is not easy.

The invention discloses an internal combustion type carbonization system based on material whole-course spiral propulsion, which comprises a carbonization furnace, a feeding auger, an ignition device, a first air blower and a second air blower, the carbonization furnace linearly extends along the left-right direction, and the right end of the carbonization furnace is provided with a carbon discharge port; a drying preheating area, a main carbonization spontaneous combustion area and a burnout carbon discharge area are sequentially formed in the hearth in the advancing direction of materials; through the partition design in the hearth and the whole-course penetrating layout of the feeding auger feeding pipe, materials are turned over, fed and carbonized in the pipe at the same time, and the problems of uneven carbonization and product quality fluctuation caused by static material accumulation or simple pushing of traditional external combustion type equipment are thoroughly solved; meanwhile, due to the internal combustion type design, pyrolysis gas can be spontaneously combusted in the furnace, heat directly acts on a feeding pipe and materials, heat loss caused by external combustion type double wall surface conduction is avoided, the heat utilization rate can be greatly improved, system self-circulation can be achieved under the condition that external continuous energy supply is not needed, and the operation cost is reduced.

An acoustic window including a convex surface that extends in an azimuth direction and contacts an examination target, and a first wall portion and a second wall portion that extend divergently from each other. At least a portion of the first wall portion is provided along an inner surface of the probe case, and the second wall portion has an outer surface that is contiguous with the convex surface.

A fluid assembly comprising: a first conduit extending in an axial direction and configured to carry a fluid, a double walled outer second conduit extending in the axial direction; the second conduit having an inner wall and outer wall and a first interspace between the inner and outer walls, wherein the first conduit is housed inside the second conduit to form a second interspace between the first conduit and the inner wall of the second conduit.

The invention provides a muddy water type pipe-jacking tunneling device adopting a double-channel cutterhead main shaft structure, which comprises a tunneling device shell, a main shaft seat, a cutterhead and a cutterhead main shaft, the tunneling device shell is of a cylindrical structure, the outer edge of the tail end of the tunneling device shell is provided with a bell and spigot for a bell and spigot pipeline, the main shaft seat is arranged at the rear half section of the tunneling device shell, and the cutterhead main shaft is arranged on the main shaft seat. The front half section of the tunneling device shell is a muddy water cabin; the cutter head is arranged at the front end of the tunneling device shell; the rear end of the cutterhead main shaft is arranged on the main shaft seat, and the front end is connected with the cutterhead; a plurality of hard alloy cutter blocks are arranged on the soil facing surface of the cutter head; the cutterhead main shaft adopts a large-diameter double-wall structure and consists of an outer shaft and a core tube, and the front end of the outer shaft is connected with the cutterhead and is responsible for driving the cutterhead to rotate; the front end of the core tube is closed, the core tube is fixedly arranged at the axis of the outer shaft, and the inner space of the outer shaft is divided into a core tube hole and a double-wall interlayer channel between the outer wall of the core tube and the inner wall of the outer shaft; the structure is extremely simple, and the technical risk is greatly reduced.

The application discloses a supporting device for double-layer wall construction, which comprises a supporting frame body, upper supporting pieces and a plurality of sets of connecting assemblies arranged on the supporting frame body, the double-layer wall comprises an inclined wall and an upper wall arranged above the inclined wall, and the plurality of sets of connecting assemblies are used for connecting the inclined wall formwork to the supporting frame body; the connecting assembly comprises a connecting rod, a lower supporting plate and an upper supporting plate, the connecting rod is vertically arranged and fixedly connected to the supporting frame body after penetrating through a lower formwork of the inclined wall downwards; the lower supporting plate is fixedly connected to the lower part of the connecting rod and used for supporting the lower formwork of the inclined wall; the upper supporting plate is fixedly connected to the upper part of the connecting rod and used for supporting an upper formwork of the inclined wall; the connecting rod is fixedly connected to the upper supporting piece after penetrating through the upper formwork of the inclined wall upwards, and the upper supporting piece is used for supporting the upper wall formwork; the supporting device has good integrity and stable structure, and can simplify the installation of the formwork; and a double-layer wall construction method is also disclosed, which greatly improves the construction efficiency.

Partition (1) with a double wall (2, 3) that is partially translucent or transparent, forming a passage (4) for ventilation and sound attenuation. A privacy space, for example within a passenger railway carriage, delimited by such a partition. Figure for the abbreviation: Fig. 3

This invention provides a modular abrasive particle size classification and screening device, belonging to the technical field of screening equipment. It includes a mounting base, an integrated cylindrical body, and multiple independent screening modules. The integrated cylindrical body is mounted on the mounting base, and the multiple independent screening modules are arranged vertically from top to bottom along the interior of the integrated cylindrical body. Each independent screening module includes a screen frame and a screen mesh, and the screen mesh aperture of each module gradually decreases from top to bottom to achieve particle size classification and screening of the abrasive. The outer ring of the screen frame has a double-wall structure, forming a closed annular cavity between the double walls. Multiple guide sleeves are vertically arranged inside the annular cavity, and each guide sleeve contains a cleaning ball that can reciprocate vertically within the guide sleeve. This device, through the integrated cylindrical body and independent screening modules, utilizes the gradual change in screen mesh aperture and vibration to classify the abrasive. The cleaning balls impact elastic impact plates to vibrate the screen, preventing clogging.

A leak and outgassing inspection system according to an embodiment of the present invention comprises: a vacuum transmitter configured to measure the pressure of an insulation space of a double wall of a liquefied gas storage tank; a vacuum pump mounted on a vacuum pipe connected to the insulation space of the double wall of the liquefied gas storage tank, and configured to operate when the pressure of the insulation space measured by the vacuum transmitter rises above a set pressure; and a determination unit analyzing a component of gas sampled during operation of the vacuum pump, and determining whether a cause of an increase in the pressure of the insulation space is any one of a leak or outgassing of the double wall on the basis of an analysis result.

A double wall (2) for a combustion chamber (1) of a gas turbine of an aircraft, the double wall (2) comprising an inner wall (21) configured to be in contact with a combustion reaction and an outer wall (22) kept at a distance from the inner wall (21), the outer wall comprising a plurality of openings (3) so as to allow the circulation of a cooling flow (F) outside the outer wall (22) so as to cool the inner wall (21), the inner wall (21) being free of perforations so as to prevent the circulation of the cooling flow (F) towards the center of the combustion chamber (1). The double wall (2) is characterized in that the inner wall (21) comprises a plurality of members (4) projecting towards the outer wall (22), each projecting member (4) comprising a foot (4a) and a cylindrical head (4b) having a circular cross section, the head (4b) extending into the opening (3) having a circular cross section so as to define an adjusted cross section area between the projecting member (4) and the opening (3), the cooling flow (F) being able to flow through the adjusted cross section area.

The present application belongs to the technical field of sound insulation of fabricated buildings, and specifically relates to a structure and method for improving the air sound insulation performance of a lightweight wall for a fabricated building, and specifically comprises: adding an elastic damping cushion layer, a sound insulation damping rubber layer or a metal damping keel on both sides of a lightweight wall framework; applying double-layer wall panels; filling glass wool or rock wool inside; treating the butt joint of the wall panels; applying a window with a sound insulation amount greater than 75% of the sound insulation amount of the wall; and setting an elastic damping rubber cushion layer around the window. The air sound insulation performance of the wall is tested and the sound insulation grade is evaluated. By not changing the conventional structure of the lightweight wall framework, the air sound insulation performance of the conventional lightweight wall is improved in the full frequency band, and measures for improving the sound insulation performance of the wall containing the window are proposed in view of the conventional window in the wall as a whole sound insulation short board. The present application ensures the advantages of high assembly efficiency, convenient and fast prefabrication, simple construction and low cost of the lightweight wall, and significantly improves the air sound insulation performance of the lightweight wall.

A compression molding system includes a first extruder configured to output melted plastic, a second extruder downstream from the first extruder and configured to mix the melted plastic with wood chips to output a composite material, a splitter downstream from the second extruder and configured to split a flow of the composite material between a first flow and a second flow, and an inner and outer block transfer valve downstream from the splitter and configured to receive the first flow and the second flow of the composite material. An inner block transfer valve and an outer block transfer valve may be configured to alternately direct the composite material between an inner block accumulator and an outer block accumulator.

The utility model relates to the technical field of non-excavation repair of drainage pipelines, and discloses a non-excavation repair device for a double-wall corrugated pipe with slight collapse deformation, which is characterized in that a fixed block is arranged at the end part of a fixed shaft; the center hole jack is arranged on the fixed shaft in a sleeving manner and is fixedly connected with the fixed block; a movable top block is arranged at the telescopic end of the center hole jack; the movable ejector block is hinged to the first end of the connecting rod set, and the second end of the connecting rod set is connected with the expansion plate. The pipeline supporting steel ring is used for being arranged on the expansion plate in a sleeving mode. The telescopic end of the center hole jack drives the movable ejector block to move along the fixed shaft, the movable ejector block drives the connecting rod set to expand in the radial direction, and the expansion plate expands the pipeline supporting steel ring to support an original pipeline. The expansion plate is driven by the center hole jack to expand outwards, the deformed pipeline is jacked to be round, the pipeline supporting steel ring is opened to be attached to the original pipeline synchronously, and local non-excavation repairing of the double-wall corrugated pipe with slight collapse deformation is achieved.

To provide a wall structure capable of improving heat insulation performance and sound insulation performance.SOLUTION: A wall structure is constituted by assembling a plurality of double wall members 10 having 2 plate members 11 having at least 3 layers of a porous body layer formed of a porous body, a fiber layer reinforcing the porous body layer, and a skin layer forming a surface, and a plurality of elongated joint members 12 interposed between the 2 plate members 11 and integrating the 2 plate members 11 with a predetermined interval.SELECTED DRAWING: Figure 2

The present application provides a subway interval tunnel smoke prevention system and a control method thereof, and relates to the technical field of subway tunnel fire safety. The system comprises a smoke prevention wall control device arranged at the connection of the station tunnel, a smoke prevention short wall made of flexible fireproof material, a smoke prevention long wall, a track top catenary, a control module and a metal framework. The smoke prevention wall control device drives the smoke prevention wall to rotate by 90 degrees to form a physical barrier through a servo motor driving gear and rack mechanism. The control method intelligently determines the evacuation direction based on the fire location, and controls the smoke prevention wall to open and close in time sequence: when the fire is at the front or the tail of the train, the double wall on the non-evacuation side and the long wall on the evacuation side are preferentially unfolded, and the short wall on the evacuation side is unfolded after the personnel evacuation is completed; when the fire is in the middle, the opening and closing sequence of the smoke prevention short wall is controlled according to the personnel evacuation time calculation value. The system effectively blocks the spread of smoke to the station, improves the smoke exhaust efficiency, ensures the safety of personnel evacuation, and solves the problems of response delay and wind waste of traditional tunnel fans.

The invention relates to the field of wall drawing and design, in particular to an automatic generation method for a double-row light steel keel wall and an automatic generation system based on Revit. An automatic generation method for a double-row light steel keel wall comprises the steps that the light steel keel wall is drawn according to a graph or in the forward direction, and wall body parameters of the light steel keel wall are defined; the method comprises the following steps: defining type parameters of different keel materials in a light steel keel wall, defining an alignment mode of the keels and the wall bodies and an offset and arrangement mode of the keels, creating a material library containing standard connection forms of the respective keels in adjacent wall bodies, matching corresponding standard connection components in the material library, and in connection of the L-shaped wall bodies, establishing a material library containing standard connection forms of the keels in the adjacent wall bodies. The double-wall inner side and the double-wall outer side are respectively connected with the double-wall inner side and the double-wall outer side which are matched with the double-wall inner side and the double-wall outer side, and in the T-shaped wall body, the double-wall inner side forms a linear part. Therefore, the problems of frequent construction errors, serious material loss and the like caused by long-term dependence on two-dimensional drawing and artificial experience on deepening design of a light steel keel partition wall system in the building decoration industry in the prior art are solved.

A compression molding system includes a first extruder to output melted plastic, and a second extruder downstream from the first extruder to mix the melted plastic with wood chips to output a composite material. A transfer valve alternately directs the composite material between inner block molds and outer block molds. Each inner block mold has an inner block press associated therewith to press the composite material into a desired shape of an inner block having an opening on one side. Each outer block mold has an outer block press associated therewith to press the composite material into a desired shape of an outer block having an opening on one side. A press assembly presses one of the inner blocks into the opening in one of the outer blocks to form a double wall block.

To provide a transport container that offers excellent operability when pulling and moving the transport container. [Solution] The transport container 1 is a transport container having a bottom plate portion 2 and a peripheral wall portion 3 erected from the periphery of the bottom plate portion 2, and handle holes 44, 54 that penetrate to the inside and outside of the container are formed in the upper plate portion 51 of the swing plate portion 4 and the bent plate portion 5 of the peripheral wall portion 3, and frame portions 45, 55 which project outward and are made of a double wall having a pair of wall portions are provided at least below the outer circumference of the handle holes 44, 54, and the frame portions 45, 55 have a structure in which the inside of the container is open and the outside of the container is closed by a closed surface portion, and the connecting portion between the pair of wall portions and the closed surface portion is curved in shape.

In order to improve three-dimensional (3D) printing a high-aspect-ratio three-dimensional metal structures, there is provided a printing method that builds a wall comprising a center part made out of a metal-containing material and left and right parts made out of a plastic material forming first and second supporting wall elements. The plastic support material may be used to enable the build-up of a high-aspect-ratio 3D structure. The proposed printing strategy may be applicable to a cost-effective 3D printing technology, such as fused deposition molding (FDM).

A compression molding system includes a first extruder to output melted plastic, and a second extruder downstream from the first extruder to mix the melted plastic with wood chips to output a composite material. A transfer valve alternately directs the composite material between inner block molds and outer block molds. Each inner block mold has an inner block press associated therewith to press the composite material into a desired shape of an inner block having an opening on one side. Each outer block mold has an outer block press associated therewith to press the composite material into a desired shape of an outer block having an opening on one side. A press assembly presses one of the inner blocks into the opening in one of the outer blocks to form a double wall block.

The utility model discloses a closed test silence room with a double-layer wall structure, which comprises a silence room outer shell, an expansion box communicated with the interior of the silence room outer shell is fixedly mounted on the front surface of the silence room outer shell, an external loose-leaf door is hinged to the front surface of the expansion box, and a storage groove is formed in the side wall of the expansion box. The double-layer wall structure of the metal outer wall and the glass fiber inner wall is adopted, the sound insulation cotton is filled between the metal outer wall and the glass fiber inner wall, external noise, especially low-frequency noise, is effectively blocked, the purity of the acoustic environment in the silence room is ensured, the shock pad can reduce interference of vibration of internal equipment on acoustic testing, and the testing accuracy is further improved. And meanwhile, leakproofness and convenience for people to go in and out are achieved through the design of the expansion box and the double doors, external noise can be prevented from permeating even in the testing process, air circulation in the mute room is achieved through the air exchange assembly arranged at the top, and it is ensured that interference cannot be introduced in the air exchange process.

The invention discloses a shear wall reinforcing method based on prestressed double wall pieces. The reinforcing method comprises the steps that tensioning force needed by prestressed steel bars in the prestressed double wall pieces is obtained; the position of a reinforcing hole of the shear wall is obtained, and the reinforcing hole is constructed; and pre-stressed double wall pieces are embedded into the reinforcing holes and fixed. The problem that in current shear wall reinforcement, reinforcement parameters are not accurately analyzed, and then the reinforcement effect on a wall body is poor after the shear wall is reinforced is solved. According to the method, the analysis on the reinforcing requirements of the shear wall is ensured, and the reinforcing parameters of the shear wall are accurately determined, so that the reinforcing effect of the shear wall is fully improved, and finally, the safe operation of the shear wall can be comprehensively ensured after the shear wall is reinforced.

A canal liner and method for installing a canal liner. The canal liner has a bottom portion, a first hollow sidewall and a second hollow sidewall. One or more of the sidewalls can have one or more weep holes to allow liquid to at least partially fill one or more internal voids thereof. The sidewalls can be coupled to the bottom portion via one or more hinges such that the canal liner can be transported in a substantially flat, planar shape and folded on-site and placed into the canal.

A vacuum heat insulating container that can be easily subjected to inspection work is provided. A vacuum heat insulating container (1) includes: a container main body (100) including an opening (40a) and an accommodating space (40b); and a lid body (101). The container main body (100) includes a heat insulating container body (40) including: a first outer covering member (41) which is a molded body made of a nonmetal material and has a gas barrier property and a double wall structure; a first core member (42); and a pressure sensor (43). The lid body (101) includes: a heat insulating lid body (50) including a second outer covering member (51) having a sack shape formed by a flexible film which includes a metal layer and has a gas barrier property and a second core member (52); and a window (61) by which a surface of the second outer covering member (51) is visually confirmable.

This application relates to a support device for a double-wall welded corrugated pipe, belonging to the field of corrugated pipe technology. It includes a support ring, outer support plates, inner support plates, a first driving mechanism, and a second driving mechanism. The outer diameter of the support ring is smaller than the inner diameter of the outer pipe, and the inner diameter of the support ring is larger than the outer diameter of the inner pipe. Multiple outer support plates are spaced apart on the outer side of the support ring. The first driving mechanism is mounted on the support ring and connected to the outer support plates, and is used to drive the multiple outer support plates to simultaneously move closer to or away from the support ring. Multiple inner support plates are spaced apart on the inner side of the support ring. The second driving mechanism is mounted on the support ring and connected to the inner support plates, and is used to drive the multiple inner support plates to simultaneously move closer to or away from the support ring. All the outer and inner support plates are concentrically arranged with the support ring. This application has the effect of facilitating the maintenance of the coaxiality of the inner and outer layers of the double-wall welded corrugated pipe.

A safety heat exchanger includes a first flow channel for a first medium, a second flow channel separated from the first flow channel by a double wall for a second medium, said double wall including a first wall and a second wall which delimit a leakage space between them, and an open-pored metal foam arranged in the leakage space and contacting the first and second walls.