106 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 utility model belongs to a foundation vibration isolation structure suitable for being adjacent to a subway basement in the field of civil engineering, and adopts the technical scheme that the foundation vibration isolation structure comprises double bottom plates and an anti-vibration pad, the double bottom plates comprise an upper bottom plate and a lower bottom plate, and the anti-vibration pad is arranged between the upper bottom plate and the lower bottom plate; the basement outer wall and the enclosure wall form double walls, the basement outer wall is connected with the upper bottom plate, the enclosure wall is connected with the lower bottom plate, and the anti-vibration pad extends upwards to be laid between the basement outer wall and the enclosure wall; the pile head of the uplift pile is fixedly embedded in the lower bottom plate; a waterproof layer is arranged below the anti-vibration pad, and the waterproof layer is arranged between the double bottom plates and the double walls; after construction of the uplift piles and the enclosure wall is completed, a cushion layer, a lower bottom plate, a waterproof layer, an anti-vibration pad, an upper bottom plate and a basement outer wall are sequentially formed from bottom to top. While the anti-floating and waterproof requirements of the basement foundation slab are met, the problem of environmental vibration caused by subway operation is solved, the use space in a building is not affected, and meanwhile the construction cost and the construction difficulty are low.

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 present invention relates to a method for air-drying solid, plasticizable material for use in a device for producing a three-dimensional object by means of additive manufacturing with material preparation, and to a corresponding device for producing the three-dimensional object from solid, plasticizable material with at least one additive manufacturing unit. A heated gaseous substance is introduced via a cavity (10) of a double-walled material feed nozzle (5) arranged between a material reservoir (2) for the solid material and a material feed zone (7) of a plasticizing unit (1) for plasticizing the solid material.The heated gaseous substance then emerges from the cavity (10) of the double wall (8, 9) of the material feed nozzle (5) near the material feed zone (7) and rises through the material feed nozzle (5) to the material reservoir (2), flowing around the solid material.

The invention belongs to the technical field of pipe galleries, and particularly relates to an assembly type pipe gallery foundation pit structure and production equipment thereof. The pipe gallery comprises a pipe gallery body, the pipe gallery body comprises two vertical double-layer wall bodies and two horizontal double-layer wall bodies, the two vertical double-layer wall bodies are symmetrically arranged left and right, the two horizontal double-layer wall bodies are symmetrically arranged up and down in parallel, and containing grooves are formed in the side faces, facing the horizontal double-layer wall bodies, of the vertical double-layer wall bodies; connecting steel bars are arranged at the positions, corresponding to the containing grooves, of the horizontal double-layer wall body, and the containing grooves are filled with cement. According to the fabricated pipe gallery foundation pit structure, the two vertical double-layer wall bodies and the two horizontal double-layer wall bodies are separated for transportation, so that the two vertical double-layer wall bodies and the two horizontal double-layer wall bodies can be stacked on a transport vehicle, transportation is convenient, space is not occupied, construction time is not wasted on transportation, auxiliary splicing is achieved through an assembly vehicle, and efficiency is improved.

The utility model relates to the field of building construction engineering, in particular to a double-wall double-column structure of a basement civil air defense part. According to the technical scheme, a partition plate is included; the wall ribs are arranged on the two sides of the partition plate; the column ribs are arranged on the two sides of the partition plate; the transverse steel bars penetrate through the partition plate, and the transverse steel bars are fixedly connected with the corresponding column bars and the corresponding wall bars; the wall bodies are formed on the two sides of the partition plate in a pouring mode and are used for burying and fixing the corresponding wall reinforcements; the column bodies are formed on the two sides of the partition plate in a pouring mode, the corresponding column ribs are embedded and fixed, and the column bodies are connected with the corresponding ends of the wall body. The construction method has the beneficial effects that by arranging the partition plate, the partition plate is reserved in the pouring position after pouring is completed, and therefore the difficulty in dismantling is avoided.

The invention relates to the technical field of machining processes, in particular to a machining method for a high-precision large-diameter fluoroplastic sealing thin-wall workpiece, which aims at machining the fluoroplastic sealing thin-wall workpiece with the diameter of more than phi 200mm and the wall thickness of 0.2-0.7 mm, and comprises the following steps of: 1, blanking to form a fluoroplastic tubular blank; 2, a special tool is customized; 3, the fluoroplastic tubular blank is fixed to a spindle of a numerical control lathe; 4, a numerical control turning tool is configured, and a numerical control turning program is compiled; 5, an inner hole or an outer circle of the fluoroplastic sealing thin-wall workpiece, a matched molded surface and a sealing surface of the fluoroplastic sealing thin-wall workpiece and the O-shaped rubber ring are machined, and finish turning allowance is reserved according to the double wall thickness priority principle; 6, finish turning is conducted on the inner hole or the outer circle in the fluoroplastic sealing thin-wall workpiece and the matched profile of the O-shaped rubber ring; 7, the sealing face of the fluoroplastic sealing thin-wall workpiece is subjected to finish turning, and the wall thickness is guaranteed; and 8, the workpiece is cut off through a cut-off tool by means of a surface constant-speed and small-feed-rate turning method.

The invention relates to an anti-penetration box-plate assembled double-layer wall structure and a construction method. The double-layer wall structure comprises: an outer wall, comprising a flat straight steel plate, a T-shaped stiffening rib and a prestressed steel strand, wherein a plurality of T-shaped stiffening ribs are evenly arranged on the inner side of the flat straight steel plate, and the web of the T-shaped stiffening ribs is vertically welded and fixed to the flat straight steel plate, a cavity is formed between two adjacent T-shaped stiffening ribs, and the prestressed steel strands are symmetrically arranged on both sides of the web of the T-shaped stiffening ribs close to the flat straight steel plate; an inner wall, which is a corrugated steel plate, arranged opposite to the outer wall, and wherein the corrugations extend outward along an oblique line direction at a predetermined angle to the height direction of the outer wall, and the wave crests of the corrugated steel plate are in close contact with the flange plates of the T-shaped stiffening ribs, and correspondingly provided with connecting holes; an anti-penetration structural layer, which is arranged in each cavity and detachably connected to the adjacent T-shaped stiffening ribs; a connecting device, which is installed on the flange plates of the T-shaped stiffening ribs and is suitable for fixing the inner and outer walls through the connecting holes. The double-layer wall structure of the present invention has excellent anti-penetration capability and can provide sufficient safety performance in wartime and other scenarios.

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.

To stably fix a divided cover member of a faucet cover.SOLUTION: A faucet cover 10 includes a main cover 48 having an opening 47 at a fitting position P of a faucet handle 16 and covering a faucet body 2, and a collar 56 attached to the opening 47 of the main cover 48. Since the main cover 48 includes a first wall part 71 constituting an outer shell 70 of the main cover 48 and a second wall part 72 facing the first wall part 71, the first wall part 71 and the second wall part 72 form a double wall 45. The collar 56 includes an insertion fitting part 73 to a gap β of the double wall 45 directed in an opening direction of the opening 47 of the main cover 48.SELECTED DRAWING: Figure 7

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 utility model relates to a device (1) for attaching a movable element to a double wall consisting of a first wall (2) and a second wall (3), comprising: an attachment head (4) applied against and positioned so as to protrude from a front face (21) of the first wall (2), the head (4) extending in a longitudinal direction (X) by means of fastening means (5), the fastening device has a flexible clip (50, 50 ') passing through the two walls (2, 3) in the longitudinal direction (X); a locking pin (6) inserted through the attachment head (4), also through the two walls (2, 3), and positioned between the at least two flexible clips (50, 50 ') while the at least two flexible clips (50, 50') are removed in order to simultaneously fix the at least two flexible clips to the first wall (2) and the second wall (3), characterized in that the flexible clips (50, 50 ') are attached to the first wall (2) and the second wall (3). 50 ') comprises a first shape portion (54) engageable in abutment with a rear face (22) of the first wall (2) in order to push the attachment head (4) against the first wall (2), and a second shape portion (55) and a third shape portion (56) engageable in abutment with a front face (31) and a rear face (32) of the second wall (3) in order to push the attachment head (4) against the first wall (2), respectively, in order to push the attachment head (4) against the second wall (3). The first shape portion (54), the second shape portion (55), and the third shape portion (56) are arranged to maintain a predetermined space (IN) between the first wall (2) and the second wall (3).

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.

The present invention discloses a connection structure and construction method for precast double beams and precast double walls in a concrete modular building, including two juxtaposed precast beams, precast partition walls and composite slabs of adjacent module units. The precast part of the precast beam and the composite slab of each module unit are integrally prefabricated and formed, and the precast beam and the precast partition wall are connected by a semi-flexible connection structure. There is a joint between the two precast beams and the precast partition wall, and a waterproof rubber strip for sealing the joint is provided in the joint of the two precast beams. The cast-in-place layer of the composite slab and the beam-slab joint area are cast in place at the site at one time. In the present invention, the precast part of the precast beam and the composite slab are integrally prefabricated and formed, and the cast-in-place layer of the composite slab and the beam-slab joint area are jointly cast with concrete, so that two adjacent precast beams are combined into one beam, enabling good connection performance between two adjacent module units, ensuring the mechanical performance of the overall structure. At the same time, the precast beam and the precast partition wall are connected by a semi-flexible connection structure, which has good connection performance and improves the seismic performance.

A cooking pot 100, with a wall 110 and a base 120. The wall has thermal insulation, and the base does not. The wall may have a first layer 112 and a second layer 114, with the thermal insulation 116 i

The present invention discloses a phosphogypsum composite PVC outer square inner circle double-wall corrugated electric power pipe, comprising an outer square pipe, a corrugated pipe arranged inside the outer square pipe, and a fixing mechanism fixed at both ends of the outer square pipe, wherein the outer square pipe comprises a square pipe body and an upper fixing plate and a lower fixing plate fixed at the upper and lower ends of the square pipe body, wherein the lower end of the upper fixing plate is provided with a protruding seat inserted through the upper end opening of the square pipe body; the lower fixing plate is fixed in the rectangular opening, and the limit seat is clamped in the gap groove; the fixing mechanism comprises an upper fixing frame and a lower fixing frame, and the two ends of the corrugated pipe extend through and through between the upper and lower groups of the semicircular grooves, and the upper and lower groups of the semicircular grooves are clamped in the corresponding gap grooves. The outer square pipe of the present invention plays a protective role on the corrugated pipe; after the upper fixing plate and the lower fixing plate are disassembled, the corrugated pipe inside the outer square pipe can be inspected and repaired; the corrugated pipe can be tightly fixed to prevent the corrugated pipe from being displaced in the outer square pipe and causing wear and damage.

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 utility model discloses a quick-assembly partition board system, which relates to the technical field of building wallboard connection and comprises a male joint and a female joint, the male joint is fixedly mounted on one side of a double-layer wallboard, the female joint is fixedly mounted on the other side of the double-layer wallboard, and the male joint and the female joint are in snap fit and insertion connection; the male connector comprises a male connecting plate, the two ends of the male connecting plate are fixedly connected with male connecting supports through first male connecting screws, and the male connecting supports are fixedly installed on the inner side wall of the double-layer wallboard through second male connecting screws. The female connector comprises a female connecting plate, the two ends of the female connecting plate are fixedly connected with female connecting supports through second female connecting screws, and the female connecting supports are fixedly installed on the inner side wall of the double-layer wallboard through first female connecting screws. The male joint and the female joint are directly inserted through the inclined plane in the inserting process, the right-angle side is used for limiting after the inserting is completed, the stability of the joint connection is ensured, the quick-assembly partition wall system is customized in a factory and only needs to be spliced on site, and time and labor are saved.