489 results about "Water tightness" patented technology

The invention relates to the technical field of ship construction, and discloses a ship annular block assembly method, which comprises the following steps of: drawing a corresponding ship body center line, a ship body longitudinal section line, a ship body rib detection line and a ship body waterline in an overall design drawing of a ship body according to the actual segmentation condition of the ship body; marking is correspondingly drawn on the built bottom section, the built broadside section and the built transverse bulkhead section in sequence as the basis; a bottom center line, a bottom rib detection line, a broadside longitudinal section line, a broadside rib detection line, a transverse bulkhead center line and a transverse bulkhead rib detection line are used for alignment and adjustment to replace data measurement of closure openings in the prior art so as to achieve alignment and butt joint of the closure openings. The problem that the alignment precision is poor due to the fact that a closing opening data measuring instrument cannot be arranged due to the narrow total assembly site is solved, the total assembly precision is guaranteed, and then the structural strength, water tightness and overall precision of a ship body are guaranteed.

The utility model discloses a window system for numerical control equipment, which is applied to the numerical control equipment for observing the internal processing process and comprises a base mounted on a safety door, a ring cover rotatably sleeved on the base, a perspective window plate mounted on the end face of the ring cover and a driving component, the ring cover is of an annular structure, and the perspective window plate is transparent glass. One end of the driving assembly is fixed to the base, the other end of the driving assembly is connected with the perspective window plate, the driving assembly drives the ring cover and the perspective window plate to rotate relative to the base, the perspective window plate is located on the inner side of the safety door, the driving assembly selects a motor as a power source, and a plurality of tooth-shaped waterproof labyrinth ring grooves are formed in the connecting position of the ring cover and the base. The driving ring cover and the perspective window plate are driven to rotate, cutting fluid, metal filings and stains on the perspective window plate are thrown away through centrifugal force generated by rotation, the effect of automatically removing the cutting fluid, the metal filings and the stains on the perspective window plate is achieved, the visual field is clearly observed, and the water tightness is good, operation is stable, and noise is low.

The invention discloses a construction method for prefabricating and assembling a seabed energy storage tank through prestress, and belongs to the technical field of structural engineering. The energy storage tank comprises a plurality of sub-spherical shell units and prestressed reinforcements. The construction method comprises factory prefabrication and field assembly processes of the plurality of sub-spherical shell units. The sub spherical shell units are made of common concrete or ultra-high performance concrete or ultra-high toughness concrete, PVC or metal corrugated pipes used for allowing prestressed steel bars to penetrate through are pre-buried in the shell framework, and anchorage device positioning grooves are reserved in the edges of the shell framework. A plurality of sub spherical shell units are sequentially spliced on site, high-strength prestressed steel bars are arranged in a pipeline in a penetrating mode and are tensioned in a segmented mode, anchorage devices are installed at the ends of the steel bars for fixing, and an overall spherical structure is formed. And sprayed concrete materials are applied to the joints and the positioning grooves for sealing, so that a closed energy storage spherical tank structure is formed. The method is suitable for an energy storage system in a deep sea high-pressure environment, and has the characteristics of simple and convenient construction process and good structural integrity and water tightness.

The utility model belongs to the technical field of inflatable boats, and discloses a high-pressure rapid inflation system for an inflatable boat and the inflatable boat. The inflation system is applied to the inflatable boat, in the process of throwing the inflatable boat to the sea surface, the stop valve is triggered to open the first air supply pipeline, high-pressure air in the high-pressure air cylinder is released instantly, and the high-pressure air is conveyed to a boat body of the inflatable boat through the first air supply pipeline, a first air inlet connector of the diverter valve, an air outlet connector of the diverter valve and the inflation pipeline; the boat body of the inflatable boat can be quickly filled with air, so that the time is greatly shortened, and the rescue efficiency is improved; the inflatable boat basically floats on the sea surface after being launched, and the requirements for water tightness and air inlet design of the electric air supplementing pump part are low; the pressure transmitter monitors the gas pressure in real time, and when the pressure of the air chamber of the inflatable boat body is lower than a set value, the control unit triggers the electric air supplementing pump to start to supplement air to the air chamber of the boat body of the inflatable boat through the second air supply pipeline, the second air inlet connector of the diverter valve, the air outlet connector of the diverter valve and the inflation pipeline.

The invention discloses a subway station entrance and exit intelligent control anti-flooding protective airtight door, and relates to the technical field of civil air defense engineering protection, the subway station entrance and exit intelligent control anti-flooding protective airtight door comprises a door body, the door body comprises a door frame and a door leaf, the bottom of the door frame is opened, the door leaf is arranged in the door frame, and an electric airtight split hinge structure is arranged on the door frame; the electric closed split hinge structure is used for controlling the door leaf to be opened or closed, and a sealing structure is arranged on the door leaf and used for sealing the door body. Automatic opening or closing of the door leaf can be achieved, the convenience of opening and closing movement of the door leaf is enhanced, and meanwhile the watertight performance is further improved.

A doorsill-free waterproof air-tight door belongs to the related technical field of civil air defense equipment and comprises a door frame and a door leaf, the door leaf is hinged to the door frame and can be in water-tight contact with the two side edges and the top edge of the door frame in a closed state, and a door lock system is arranged on the door leaf and used for locking the door leaf on the door frame; a ground sealing assembly in linkage with the door lock system is further arranged on the door leaf, the ground sealing assembly comprises a ground sealing beam which is hinged to the door leaf and can turn over up and down relative to the door leaf, a sealing rubber strip which can deform under pressure is arranged on the bottom face of the ground sealing beam, and the ground sealing beam can make sealed contact with the door leaf and the ground at the same time. And the locking mechanism is linked with the ground sealing beam, so that the door can be quickly opened and closed, and extremely low leakage can be realized in a relatively long time. No matter at ordinary times or wartime, no threshold protruding out of the ground exists, a large number of people can pass through conveniently, a brand-new ground sealing mechanism is adopted for sealing the ground, and the threshold does not need to be moved or a door leaf does not need to be lifted.

The utility model discloses a door and window curtain wall watertight performance test device, which comprises a box body and a spraying assembly, one side surface of the box body is provided with a cross beam and a vertical column, the cross beam can move along a first direction, the vertical column can move along a second direction, and the cross beam and the vertical column can lock a curtain wall to be tested so as to be installed on the side surface of the box body; the spraying assembly is arranged in the box body, the spraying direction faces the to-be-detected curtain wall, the spraying assembly comprises a water pump and an adjusting valve, and the adjusting valve is used for adjusting the water spraying amount and the water flow pressure. According to the door and window curtain wall watertight performance test equipment provided by the utility model, the curtain wall to be tested is locked on one side surface of the box body through the cross beam capable of moving along the first direction and the vertical column capable of moving along the second direction, and then the watertight performance of the curtain wall to be tested is tested through the spraying assembly. And the water spraying amount and the water flow pressure of the spraying assembly are adjustable, so that a more severe environment can be simulated, and the watertight performance of the curtain wall can be tested.

The invention discloses a building decoration curtain wall construction quality monitoring method and system, and relates to the technical field of building curtain wall construction quality monitoring, and according to the method, through S1-S6, spatial data is obtained by using a three-dimensional laser scanning technology, accurate geometric deviation detection can be realized, and real-time early warning and repair are carried out according to a preset deviation threshold value. Through real-time monitoring of each construction stage, such as the installation quality of an embedded part, the stress state of vertical keel connection and the abutted seam deviation of panel installation, the stability, the air tightness and the water tightness of the building curtain wall are ensured, and the later problems caused by personal errors in traditional construction are avoided. Besides, archiving of each monitoring data, early warning instruction and strategy execution condition provides effective guarantee for tracing of later construction quality, so that construction management is more transparent and controllable. Through scientific and reasonable early warning and restoration strategies, high-cost restoration caused by error accumulation is reduced, and the later maintenance burden is reduced.

The utility model provides a cabin-penetrating cable tube assembly and a ship with the cabin-penetrating cable tube assembly, the cabin-penetrating cable tube assembly comprises a cabin-penetrating tube, two ends of the cabin-penetrating tube are both provided with first waterproof sealing members capable of expanding when encountering water, the first waterproof sealing members are used for filling a gap between a cable and the tube wall of the cabin-penetrating tube, and a filler cavity is defined by the cabin-penetrating tube and the two first waterproof sealing members; and the filling cavity is used for being filled with a waterproof sizing material, the waterproof sizing material located in the filling cavity forms a second waterproof sealing piece after being cured, and injection holes and exhaust holes which are distributed at intervals are formed in the pipe wall of the cabin penetrating pipe and communicate with the filling cavity. According to the cabin-penetrating cable pipe assembly and the ship with the cabin-penetrating cable pipe assembly, the watertight performance of the cabin-penetrating pipe is improved, meanwhile, the whole cabin-penetrating pipe does not need to be filled with filler, the using amount of the filler and the filling operation difficulty of the filler in the cabin-penetrating pipe are reduced, and then the waterproof sealing cost of the cabin-penetrating pipe is reduced.

The invention discloses a battery core wire connecting and sealing technology, and aims to provide a simple battery core wire connecting and sealing method which is characterized by comprising the following steps: S1, preparation work: removing insulating layers at one ends of two sections of battery core wires to be connected, exposing conductive parts, and welding the end parts of the conductive parts of the two sections of battery core wires through welding; s2, crimping sleeve connection: respectively connecting the battery core wires at the two ends with the crimping sleeve through a crimping tool; s3, crimping protection sleeve connection: after crimping is completed, the crimping point is sleeved with the crimping protection sleeve; s4, mounting a sealing rubber sleeve: mounting the sealing rubber sleeve outside the crimping point; s5, water tightness testing: after sealing is completed, water tightness detection is carried out, and whether the sealing effect reaches the standard or not is determined; s6, external packaging: adding a layer of high-strength packaging material, including but not limited to a polyurethane material, outside the sealing rubber sleeve, and performing final packaging; the invention is suitable for the technical field of battery core wire connection sealing.

Provided is a water shut-off structure, for a pipe joint, where component versatility can be improved without decreasing watertightness.　A rubber packing 3 comprises: an annular first rubber member 4 where an inner circumferential surface 41 contacts an outer circumferential surface 100a of a pipe 100; an annular second rubber member 5 stacked on an outer peripheral surface 42 of the first rubber member 4 in a pipe radial direction Y of the pipe 100; and stacking retention means 6 for retaining the stacked state of the first rubber member 4 and the second rubber member 5. The first rubber member 4 is made of a rubber material that is harder than the second rubber member 5. In the stacked state of the first rubber member 4 and the second rubber member 5, an end part 43 on a receptacle part side of the first rubber member 4 protrudes further in a pipe axial direction X of the pipe 100 than an end part 53 on the receptacle part side of the second rubber member, and a portion of a protruding part 43a of the end part 43 is disposed between an inner end part 21a of the receptacle part and the outer circumferential surface 100a of the pipe 100. The second rubber member 5 faces a tapered surface 21c of the receptacle part 21.

The invention discloses a racing boat flaw detection system, and relates to the technical field of data processing. The system comprises a water tank, a water tightness detection device, an ultrasonic flaw detector, a camera, a 3D scanning device and a data processing device, the water tank is used for placing a to-be-detected racing boat; the water tightness detection device is used for detecting the water tightness of the racing boat in the water tank; the ultrasonic flaw detector is used for judging whether the cabin body of the racing boat has flaws or not; the camera is used for shooting a surface image of the racing boat; the 3D scanning device is used for scanning the racing boat to obtain a boat body three-dimensional model of the racing boat; the data processing device is used for determining whether flaws exist on the surface of the racing boat or not according to the surface image and determining the shape deviation and the size precision of the racing boat based on the three-dimensional model of the boat body. According to the invention, the watertightness, the structural integrity and the dimensional precision of the racing boat can be comprehensively, automatically and efficiently evaluated, so that the detection accuracy and the operation convenience are remarkably improved, and the situation of missing detection of manual detection is reduced.

The utility model discloses a support and a photovoltaic panel mounting system. The support comprises a fixing piece; the lead screw penetrates through the fixing piece, and the first end is connected with the fixing piece; the base plate assembly is arranged on the lead screw in a sleeving mode, the distance between the base plate assembly and the fixing piece is adjustable, the base plate assembly comprises a supporting base plate, a sealing waterproof structure and a fixing base which are arranged in a stacked mode, and the base plate assembly is in water-tight connection with the lead screw through the sealing waterproof structure, the supporting base plate and the fixing base; the locking device is used for locking the fixed base to a preset position on the lead screw so that the fixed base can be tightly connected with the supporting chassis. According to the support and the photovoltaic panel mounting system provided by the embodiment of the invention, the supporting chassis can increase the contact area with the base surface and enhance the stabilizing effect of the fixed base, and the locking piece locks the fixed base at the preset position on the screw rod, so that the fixed base is tightly connected with the supporting chassis, the photovoltaic panel can be stably arranged on the support, and the photovoltaic panel mounting efficiency is improved. And the supporting chassis and the fixed base as well as the screw rod are in water-tight connection through a sealing waterproof structure.

Disclosed in the present utility model is a high-heat-preservation lift-and-slide door, comprising: inner and outer door leaves, upper and lower rails, and left and right side frames, wherein the inner and outer door leaves, the upper and lower rails and the left and right side frames each comprise profiles and double sealing strips; a heat-preservation rubber strip A is provided on the upper portion of the lower rail, a heat-preservation rubber strip B is provided on the inner side of each side frame, and the inner and outer door leaves are both provided with heat-preservation rubber strips C fitted with the heat-preservation rubber strip A and the heat-preservation rubber strip B; and a sealing assembly is mounted below a lap joint of interlocking edges of the inner and outer door leaves, and is embedded in a U groove of the lower rail, and a windproof member is mounted above the lap joint of the interlocking edges of the inner and outer door leaves, and is embedded in a U groove of the upper rail. In the present utility model, thermally insulated areas of the upper and lower rails, the side frames and the door leaves can be located on the same vertical heat-preservation line, thereby effectively stopping heat transfer and enhancing the heat-preservation performance; and quality problems, such as shrinkage and arching, caused by using plastic profiles at the interlocking edges can be effectively solved, and thus the airtight and watertight performances are enhanced in addition to thermal insulation and heat preservation being achieved.

The invention relates to a door and window safety performance detection device for constructional engineering, and belongs to the technical field of constructional engineering detection. The uniformly distributed load force application assembly can apply uniform or gradient change pressure to the whole surface of the door and window to simulate wind pressure; the concentrated load force application assembly can perform fixed-point impact on specific parts of doors and windows and simulate hard object impact or violent forcible entry; the wind pressure loading assembly applies uniform and gradient-adjustable wind pressure loads to the surfaces of doors and windows, simulates stress states under different wind levels and detects the air tightness of the doors and windows, and the rainfall simulation assembly simulates rainfall environments with different strengths to detect the water tightness of the doors and windows; the deformation of doors and windows, the stress of key parts of the doors and windows, the water leakage condition and the air leakage condition can be monitored, and the comprehensiveness and the real-time performance of detection data are ensured. The system can achieve the detection of multiple safety performance dimensions of the doors and windows of the constructional engineering, effectively improves the detection efficiency and precision, reduces the manual operation intervention, and provides a comprehensive and reliable data support for the safety performance evaluation of the doors and windows.

The utility model discloses a waterproof pressing rivet nut structure, which comprises a main body, a flange seat and a convex eave, the main body is provided with a central shaft hole, the central shaft hole is provided with an internal thread, the bottom of the central shaft hole is of a solid structure, the flange seat extends outwards from the middle of the main body, the inner side of the flange seat is provided with a limiting groove which is concavely arranged, and the convex eave is arranged in the limiting groove. The convex eaves are arranged on the peripheral wall of the upper end of the main body, the convex eaves are arranged above the limiting groove and are oppositely arranged, and a pressing interval is defined by the limiting groove and the convex eaves. In actual installation, the main body is placed in a riveting hole of a plate, then the plate is extruded and deformed through a riveting press and pressed between the limiting groove and the convex eave, and through the staggered pressing intervals, after the pressing rivet nut is fixed to the plate, a stepped staggered waterproof structure can be formed, firm combination is guaranteed, and the waterproof effect is improved. The water tightness of the pressing rivet nut after the pressing rivet nut is mounted on the plate is also ensured; the structure is simple and stable.

To provide drainage pipe joints with optimal vibration damping performance, vibration isolation performance, and sound insulation performance, as well as suitable water tightness.SOLUTION: A drainage pipe joint 100 comprises a pipe main body 110 that is placed in a through hole of a floor slab S when installed in a building, an upper riser pipe connection part 120 that connects a drainage riser pipe 520 that protrudes above the floor slab S and allows drainage water to flow in from the upper floor, a drainage pipe connection part 130 that connects a drainage riser pipe 530 that protrudes below the floor slab S and allows drainage water to flow out to the lower floor, and a horizontal branch pipe connection part 140 that connects a drainage horizontal branch pipe 510 above the floor slab S. An outer layer member 700 is provided so as to be wound around the outer periphery of the pipe main body 110, and the outer layer member 700 has a three-layer structure consisting of, from the inner layer, a vibration damping material 714, a vibration insulator 720, and a sound insulation cover 730, and the sound insulation cover 730 covers the entire length of the vibration insulator 720 in the vertical direction.SELECTED DRAWING: Figure 5

The invention discloses a container structure and a manufacturing method thereof. The container structure comprises a wall frame and a bottom frame. The underframe comprises a bottom side beam, an end bottom beam and a steel floor; the bottom side beam and the end bottom beam are respectively provided with a first connecting surface and a second connecting surface which extend along the horizontal direction; wherein the extension directions of the first connecting surface and the second connecting surface are opposite, and the second connecting surface extends towards the inner side direction of the wall body frame; the first connecting face and the second connecting face are used for being welded and fixed to the wall frame and the steel floor correspondingly. Through the arrangement, a bottom cross beam does not need to be arranged, so that the material cost of steel is correspondingly reduced, the number of welding beads can be reduced, the labor cost and operation difficulty of welding operation are reduced, the production efficiency is improved, meanwhile, the water leakage risk caused by welding bead sealing defects is effectively reduced, and the water tightness requirement of the water storage type container is met.

The utility model discloses a regenerated wrought aluminum alloy door and window, which comprises a door and window mechanism, a reinforcing mechanism and a sealing mechanism, and the door and window mechanism comprises a frame, glass arranged in the frame and the reinforcing mechanism, the reinforcing mechanism comprises a plurality of sealing plates clamped to the side edges of the frame, a plurality of memory alloy pieces attached to the inner side walls of the sealing plates and a plurality of abutting plates attached to the outer edge of the glass, and the abutting plates are attached to the inner sides of the memory alloy pieces correspondingly. According to the utility model, under high temperature weather, the memory alloy sheet increases the volume, and then when the abutting plate is extruded, the insertion rod is led to move and is inserted into the insertion hole, so that the insertion rod opens the rubber pad and the rubber pad is uniformly attached to the surface of the glass, and the dynamic compensation can timely sew and repair a gap, improve air-tight seal and water tightness and ensure the sealing effect.

The utility model relates to the technical field of building curtain wall accessories, and discloses a novel curtain wall unit plate sealing structure which comprises a rhombic plate frame composed of an upper triangular plate frame and a lower triangular plate frame which are distributed up and down. Bevel-shaped sealing strips are arranged at the three bevel positions of the inner sides of the sealing grooves of the upper triangular plate frame and the lower triangular plate frame, linear sealing strips are arranged between every two adjacent bevel-shaped sealing strips, butt joint protruding strips are fixedly arranged at the ends of the bevel-shaped sealing strips, butt joint grooves are formed in the ends of the linear sealing strips, and the butt joint protruding strips are fixedly connected with the butt joint grooves. By means of the curtain wall plate frame inner bevel joint sealing structure, the adaptation fitting degree can be enhanced when the curtain wall plate frame inner bevel joint is sealed, the sealing effect of the curtain wall plate frame inner bevel joint is improved, and the overall airtight and watertight performance of a curtain wall is guaranteed.

The invention relates to the technical field of building construction, in particular to a kitchen flue hole-lifting-free integrated construction method which comprises the following steps: S1, optimizing a flue hole; s2, the flue formwork is reinforced; s3, concrete pouring; s4, a flue is installed; s5, node sealing treatment is carried out; and S6, performing a closed water test. According to the method, the size of the reserved flue hole is optimized to be matched with the inner overall size of the finished flue, the finished flue can be directly placed on a building structure floor when being installed, and compared with traditional hole hanging method construction, the construction step of filling the fit clearance between the finished flue and the reserved flue hole with concrete is omitted, the construction efficiency is improved, and the construction cost is reduced. Therefore, the forming quality of concrete at the butt joint part of the reserved flue hole and the finished flue is higher, and the risk of leakage of a building floor is reduced.

The utility model relates to a special tool for testing water tightness of automotive foam, which belongs to the technical field of automotive foam testing and comprises a workbench and a support plate fixedly connected to the top of the workbench, and one side, far away from the workbench, of the support plate is fixedly connected with a top plate. A fixing structure extending to the top of the workbench to fix the automotive foam is arranged in the workbench, the fixing structure comprises a two-way threaded rod rotationally connected to the interior of the workbench, and the exterior of the two-way threaded rod is in threaded connection with a threaded sleeve. According to the special tool for testing the water tightness of the foam for the vehicle, a rocker is rotated to drive a bidirectional threaded rod to rotate, and then the bidirectional threaded rod simultaneously drives two threaded sleeves and placement seats to move relatively, so that the two placement seats can respectively drive two transparent clamping plates to move relatively; and by arranging the positioning stand columns, the worker can conveniently place the automotive foam on the transparent clamping plates, meanwhile, the automotive foam is made to form a U shape, and then the automotive foam is conveniently clamped and fixed.

The invention provides a washing machine which can reliably enable thread residues attached to a door corrugated pipe to fall off through a simple structure. A washing machine according to an embodiment includes: a housing having an inlet / outlet through which laundry can enter and exit in a front-rear direction; a water drum housed in the housing and having an opening facing the inlet / outlet; an annular water drum cover attached along the opening and centered on a central axis along the front-rear direction; and a door bellows that is attached along the circumferential direction of the water drum cover and that connects the inlet / outlet and the water drum cover in a watertight manner. The door bellows has a structure in which a bending portion formed by bending a part of the door bellows forward is formed along the circumferential direction. The water cylinder cover is provided with a spraying hole which is configured at a position opposite to the bending part and sprays water towards the bending part.

The invention discloses a water tightness testing device for an automobile door trim panel. The water tightness testing device comprises a water storage assembly, a drainage pipe and a water dripping assembly, the water storage assembly is used for storing watertight test liquid and conveying the watertight test liquid to the water dripping assembly through a drainage pipe; the water dripping assembly is arranged above the to-be-tested door trim panel, a preset number of dripping openings are formed in the bottom of the water dripping assembly, and the dripping openings correspond to the door trim panel, so that the water tightness testing liquid drips onto the door trim panel for water tightness testing. Through the technical scheme of the invention, the water tightness inspection of the door interior trim panel can be realized, the part-level waterproof test standard and the experimental method are developed, and a basis is provided for effectively improving the product quality.

The present invention relates to pipe clamps to which packing is coupled, wherein the pipe clamps are divided in two into upper and lower clamps (100, 200). Flanges (110, 210) are formed at both ends of the upper and lower clamps (100, 200), and the upper and lower flanges (110, 210) are provided with bolt holes (1) so that the upper and lower flanges (110, 210) can be coupled by bolts (2) or decoupled. Convex portions (10) and concave portions (20) are correspondingly formed on the abutting portions of the upper and lower flanges (110, 210) of the upper and lower clamps, thus ensuring secure fastening of the flanges. Furthermore, packing is installed inside the upper and lower clamps (100, 200) to prevent leakage. Also, the packing is made of rubber, the convex portions and concave portions are formed on the abutting surfaces of the upper and lower flanges of the pipe clamps, the fastening centers of the flange surfaces are securely aligned when the flanges are fastened, the mating of components is ensured even after the flanges are fastened, and the clamps can be assembled and disassembled quickly and easily. In addition, the packing member inside the clamp has a fluid accommodation portion, which is a space for accommodating fluid that leaks initially, and thus there is a complete absence of fluid leaking to the outside. Also, as the initially leaked fluid is accommodated in the fluid accommodation portion, the pressure exerted by the fluid increases, thereby increasing watertightness, and thus sustained fluid leakage can be prevented. The present invention has the remarkable effect that water tightness can be more efficiently maintained due to the fluid accommodation portions formed at both ends of the packing.

The invention relates to the technical field of external window water tightness testing, in particular to an external window water tightness testing method and an external window water tightness testing device. The external window water tightness testing method comprises the steps that S1, a hanging mechanism is installed on a fixing mechanism, a water conveying pipe of a sprayer is detachably and movably connected to the fixing mechanism, and the water conveying pipe of the sprayer is detachably connected to the upper portion of the hanging mechanism; s2, hanging a hanging mechanism at the top of a windowsill wall above the outer window to be detected, and enabling a spray head of a sprayer to face the outer side part of the outer window to be detected; s3, a water conveying pipe is communicated with a water supply device, then the water supply device is turned on, and a spraying head sprays water to the outer side of the to-be-detected outer window; s4, after preset time, the water supply device is closed, and then the water seepage condition of the inner side of the outer window to be detected is checked. The water tightness test result of the outer window water tightness test method is more accurate.

The invention discloses a method for replacing a ship candling copper pipe. The method comprises the steps that a water leakage copper pipe is determined; a rod with self-tapping threads is adopted to be inserted into one end of the to-be-replaced copper pipe, and the rod is drawn to repeatedly impact the to-be-replaced copper pipe till the to-be-replaced copper pipe is loosened; when the to-be-replaced copper pipe is loosened, the chain is connected with the other end of the to-be-replaced copper pipe, the rod is pulled, and the to-be-replaced copper pipe and the chain are pulled out together; a chain is connected with the new copper pipe, the chain is drawn, the new copper pipe is inserted into a flange hole of a ship cantor, and the chain is detached; and the water tightness is improved. According to the method, a damaged copper pipe located in a partition is found in a reverse back pressure mode, the damaged copper pipe is stably attached to the wall of a bobbin through self-tapping threads of a rod, then the rod is drawn, the copper pipe is separated from a hole in the end face of a flange through vibration, a new copper pipe is installed through a chain with a guiding function, and the task of replacing the copper pipe is safely and effectively completed; and the quality of the ship after replacement is ensured.

The invention belongs to the technical field of ocean engineering and bridge tunnel engineering, and relates to a connector dynamic water tightness test device and method for simulating the motion state of a floating tunnel, and the test device comprises fixed platforms located at the two ends and used for simulating a relatively stable section of the floating tunnel; the six-degree-of-freedom platform is positioned in the middle section and is used for simulating an unstable section of the floating tunnel; the flexible bag wraps the joint of the floating tunnel on the fixed platform and the floating tunnel on the six-degree-of-freedom platform, and a closed space is formed between the flexible bag and the joint of the two floating tunnels and used for simulating water pressure; and the motion control assembly is used for controlling the motion of the six-degree-of-freedom platform so as to simulate the motion state of the floating tunnel in the hydrodynamic environment. By means of the innovative structural design and test method, the motion state of the floating tunnel in the complex marine environment and the watertight performance of the connector of the floating tunnel can be efficiently simulated, and reliable experimental data support is provided for design and optimization of the floating tunnel.

The present invention relates to a multi-core watertight bulkhead fiber optic connector, which is characterized in that it includes a bulkhead socket and two plugs. The bulkhead socket and the plugs are guided through the cooperation of a key and groove connection structure and are inserted through the cooperation of a positioning pin and a positioning pin hole connection structure. After the bulkhead socket and the plugs are inserted, they are connected and locked through a threaded structure. The bulkhead socket is provided with an optical contact member and an optical connection end rubber member, and the plug is provided with a coupling sleeve. When the bulkhead socket and the plug are inserted, the optical contact member is inserted into the coupling sleeve to achieve optical path alignment and fiber connection. The optical connection end rubber member is located at the insertion end face between the optical contact member and the coupling sleeve. The plugs and the bulkhead socket of the present invention both have transverse watertight performance. After the plug and the bulkhead socket are connected and locked, the overall watertightness of the bulkhead fiber optic connector can be achieved, providing watertight protection on both sides of the bulkhead.

The invention discloses a roof middle gutter expansion joint node system structure and an installation method thereof. The roof middle gutter expansion joint node system structure comprises two supporting devices and a connecting device, each middle gutter extends in the length direction of the corresponding installation interval, and each middle gutter is arranged at the corresponding installation interval; turnups are arranged on the two sides of each middle gutter, and each turnup is installed on the upper surface of the corresponding purline; and the expansion joint connecting piece is arranged at the expansion joint and is connected with the two middle gutters in a welding manner, so that the two middle gutters are communicated. The two spaced middle gutters and the middle expansion joint connecting piece are connected together in a welding mode, namely a full-sealing installation and connection mode is adopted, the comprehensive waterproof performance of the middle gutter expansion joint node is improved, and the whole roof middle gutter expansion joint node system structure has excellent air tightness and water tightness.