306 results about "Metal bellows" patented technology

The invention provides an automatic leak detection method and system for a dynamic bending durability test of a metal corrugated pipe, and relates to the technical field of metal corrugated pipe performance tests.The method comprises the steps that a to-be-tested metal corrugated pipe is installed on a test station, and test working condition parameters are set through a PLC; the test working condition parameters comprise a bending motion mode, a load spectrum, an internal pressure type, a pressure value, a temperature condition and a test frequency; according to the bending motion mode and the load spectrum, a multi-degree-of-freedom bending motion mechanism is driven to apply a dynamic bending load to the metal corrugated pipe; and when the dynamic bending load is applied, internal pressure is applied to the interior of the metal corrugated pipe according to the internal pressure type and the pressure value, and a temperature environment is synchronously applied, so that a multi-factor coupling load is formed. According to the invention, on the basis of working condition setting, through multi-source data acquisition, correction and fusion determination, an automatic closed loop of test execution, abnormity alarm, helium detection quantification and report generation is realized.

The invention provides a metal corrugated pipe concave type forming device and method, and relates to the technical field of metal pipe non-cutting machining, and the metal corrugated pipe concave type forming method comprises the steps that a servo driving mechanism drives a first core mold to expand to the designed diameter in the radial direction, and the first core mold is pushed to move in the axial direction to be folded with a second core mold; the upper die and the lower die are driven by the first hydraulic cylinder to get close to each other for die assembly; a liquid medium is injected into the sealing cavity through the hydraulic assembly; the first hydraulic cylinder drives the upper die and the lower die to move away from each other; a servo driving mechanism drives a first core mold to radially contract and axially move, and a second hydraulic cylinder synchronously drives a second core mold to push formed corrugations; the servo driving mechanism drives the first core mold to axially move in the direction close to the second core mold for resetting, and the second hydraulic cylinder drives the second core mold to reset. The first core mold and the second core mold are adopted to move cooperatively for feeding, full-automatic continuous machining of the metal corrugated pipe is achieved, and the forming efficiency is remarkably improved.

The utility model discloses metal corrugated pipe manufacturing equipment which comprises a plurality of stamping parts, a plurality of stamping dies and an adjusting mechanism used for adjusting the pipe blank feeding amount, the stamping parts are annularly distributed on the inner side of a pipe blank, the stamping dies are annularly distributed on the outer side of the pipe blank, and the adjusting mechanism is used for adjusting the pipe blank feeding amount. And the stamping part and / or the stamping die can do internal and external telescopic motion. A manufacturing method of a metal corrugated pipe comprises a corrugation forming procedure, specifically, stamping parts synchronously extend outwards and / or stamping dies synchronously contract inwards, so that a corrugation is formed on a pipe blank; all the stamping parts synchronously contract inwards to reset and / or all the stamping dies synchronously extend outwards to reset, and the adjusting mechanism drives the pipe blank to ascend or descend by a set distance; or, the adjusting mechanism drives the stamping part and the stamping die to ascend or descend by a set distance, and preparation is made for forming the next corrugation. The device has the advantages of adaptability to various specifications, simplicity in operation, short processing time and the like.

The invention relates to the technical field of thermal control of spaceflight electronic equipment, and discloses a heat dissipation device based on a corrugated pipe liquid metal unit array and a manufacturing process, and the heat dissipation device comprises a plurality of metal corrugated pipe units, a radiator substrate located at the tops of the metal corrugated pipe units, and a unit bottom plate located at the bottoms of the metal corrugated pipe units; the number and the positions of the metal corrugated pipe units are matched with those of components on the component substrate, and each metal corrugated pipe unit comprises one or more metal corrugated pipes; one side of the metal corrugated pipe is in sealed connection with the radiator substrate, and the other side of the metal corrugated pipe is in sealed connection with the unit bottom plate; the metal corrugated pipe is filled with liquid metal and used for transferring heat. According to the invention, through independent elastic deformation of the metal corrugated pipe units, the height difference of electronic components below is compensated in a self-adaptive manner, pressure control and efficient heat conduction are realized, and the problems existing in the heat dissipation design of the spacecraft electronics box are solved.

The invention discloses a detection device for a metal corrugated pipe, and relates to the technical field of corrugated pipe detection, the device comprises a base, the left side and the right side of the upper end of the base are respectively and symmetrically fixed with a fixed plate I and a fixed plate II, and the upper ends of the fixed plate I and the fixed plate II are provided with surface detection structures for detecting the outer surface of a pipe fitting. According to the internal supporting structure, through a linkage mechanism of the internal supporting lead screw and the gear, stable fixation of the interior of the pipe fitting and synchronous rotation during detection are achieved; meanwhile, the surface detection structure utilizes a reciprocating screw rod to drive a detection piece to do linear reciprocating motion, and the outer surface of the pipe fitting is comprehensively scanned; therefore, the stability of the pipe fitting in the detection process is ensured, errors caused by shaking or displacement are avoided, and the detection precision is remarkably improved; omnibearing detection capability ensures that tiny defects on the surface of the pipe fitting are accurately found, and detection quality and reliability are further improved.

The invention relates to the field of metal corrugated pipe leakage detection, and discloses a fixing device for metal corrugated pipe leakage detection and a helium mass spectrum leakage detection system, and the fixing device comprises a first device body and a second device body which are opposite to each other in a first direction and are arranged in a spaced manner to form an assembly space, a first communication hole is formed in at least one of the first device body and the second device body; the adjusting mechanism is used for adjusting the spacing distance between the first device body and the second device body in the first direction so as to change the size of the assembly space in the first direction. Therefore, through cooperation of the first device body, the second device body and the adjusting mechanism, the size of the assembling space in the first direction can be changed, metal corrugated pipes of different length sizes can be assembled in the assembling space, and therefore the universality of the fixing device can be improved, and the fixing device is simple in structure and convenient to use. And the assembly efficiency of the fixing device is improved, so that the leak detection efficiency of the metal corrugated pipe is improved.

The invention discloses a variable-center-distance double-spindle main transmission mechanism, and relates to the technical field of numerical control machine tools. The fixed main shaft and the distance adjusting main shaft are arranged at the bottom of the box body, and the distance between the two main shafts is adjustable; gear transmission assemblies are arranged in the transmission cavity of the box body, a transition gear and a follow-up gear are adopted to keep the meshing transmission relation between the gear transmission assemblies in the center distance adjusting process, and in the center distance adjusting process, the leakproofness of the transmission cavity is continuously kept. The screw rod driving module drives the distance adjusting main shaft to move and is matched with a gear transmission structure, flexible adjustment of the center distance of the double main shafts is achieved, repeated disassembly, assembly and adjustment are not needed, time and labor are saved, and various machining requirements are met; the closed transmission cavity is formed by the metal corrugated pipe and the fixing ring, external scraps, cooling liquid and other pollutants are effectively prevented from entering, a gear transmission system is protected, the overall structure is compact and reliable, the transmission path is clear, and the device is suitable for the numerical control machine tool with the high precision and high reliability requirements.

The application belongs to the technical field of water quality filtering of heat exchange equipment, and particularly relates to a filtering device and method for water quality of wave disturbance flow cooling heat exchange equipment, which comprises a primary filtering tank with supporting feet, a primary filtering mechanism is arranged in the primary filtering tank, a backwashing filter is arranged below the primary filtering tank, an aggregation mechanism is arranged between the primary filtering tank and the backwashing filter, and a sterilization mechanism is arranged at the output end of the backwashing filter. The filtering device and method for water quality of wave disturbance flow cooling heat exchange equipment, through the booster pump for pressurizing the spray water entering the metal bellows, the instantaneous high-pressure water flow impacting the metal bellows can generate a longitudinal wave and compression, and then the micro-particles can be compressed into groups, and the two groups of reset ropes relatively reset the metal bellows, so that the spray water and the particles in the water are pushed forward to flow into the backwashing filter, so that the water flow passes through the filtering medium to filter out the solid particles and suspended matters in the water, thereby reducing the operation cost.

The utility model relates to the technical field of flat pipe machine, concretely to a flat pipe machine for metal bellows production and processing, the utility model discloses a workbench, the inner wall one side of workbench is provided with cleaning assembly, the other end of workbench is provided with cutting assembly, the inner wall rotationally connected of workbench has extruding roller, the front of workbench is provided with gear, gear and extruding roller are fixed, the front fixed connection of gear has pulley, the gear is engaged each other up and down, by setting cleaning assembly, when cleaning to metal bellows, metal bellows is placed to extruding roller between by the worker passing through the circular ring on installation rod, then by the first motor drive extruding roller makes metal bellows move forward, the brush on the installation ring contacts metal bellows to clean the small stone on its surface, and then as far as possible reach the effect that avoid the influence of small stone leading to the surface damage of metal bellows and the service life of extruding roller.

The utility model belongs to the technical field of metal corrugated oil conservators for transformers, and particularly relates to an internal oil type metal corrugated oil conservator with a pointer type oil level indicator, which comprises a conservator cover, a conservator seat, an expansion core, the pointer type oil level indicator and a transmission and detection component. The expansion core body expands and contracts up and down in the cabinet cover, the pointer type oil level gauge is installed on the cabinet cover, the up-and-down movement of the expansion core body is converted into rotation of an oil level gauge pointer through the transmission and detection assembly, oil level information is transmitted to a remote control terminal, and the functions of remotely monitoring the oil level height and giving an alarm when the oil level is too high or too low are achieved. The oil level indicating device is visual and accurate in oil level indication, convenient and fast in reading, smooth and reliable in transmission and detection assembly operation, free of clamping stagnation, high in universality, free of limitation of sealing performance, capable of achieving remote monitoring and capable of saving manpower and material resources.

The invention discloses a detection device for a metal corrugated pipe, and relates to the technical field of corrugated pipe detection, the device comprises a base, the left side and the right side of the upper end of the base are respectively and symmetrically fixed with a fixed plate I and a fixed plate II, and the upper ends of the fixed plate I and the fixed plate II are provided with surface detection structures for detecting the outer surface of a pipe fitting. According to the internal supporting structure, through a linkage mechanism of the internal supporting lead screw and the gear, stable fixation of the interior of the pipe fitting and synchronous rotation during detection are achieved; meanwhile, the surface detection structure utilizes a reciprocating screw rod to drive a detection piece to do linear reciprocating motion, and the outer surface of the pipe fitting is comprehensively scanned; therefore, the stability of the pipe fitting in the detection process is ensured, errors caused by shaking or displacement are avoided, and the detection precision is remarkably improved; omnibearing detection capability ensures that tiny defects on the surface of the pipe fitting are accurately found, and detection quality and reliability are further improved.

The utility model relates to the technical field of urea solution denitration, in particular to an incineration tail gas denitration auxiliary device. The incineration tail gas denitration auxiliary device comprises a liquid storage cylinder, a plurality of metal corrugated pipes which are annularly distributed are installed on the liquid storage cylinder, and a plurality of atomization nozzles are installed on the metal corrugated pipes. The bottom of the liquid storage cylinder is provided with an adjusting component used for adjusting the spraying angle of the atomizing nozzle. According to the incineration tail gas denitration auxiliary device provided by the utility model, the design of the annularly distributed metal corrugated pipes and the multi-angle atomizing nozzles is adopted, and the diversion branch pipes are matched, so that the vertical and horizontal two-way coverage of urea solution in the flue is realized, the mixing efficiency of the urea solution and flue gas is obviously improved, the denitration blind area is reduced, and the denitration efficiency is improved. And the angle of the atomizing nozzle on the metal corrugated pipe is adjusted through the adjusting component, so that the spraying range is expanded, and the denitration requirements under different working conditions are met.

The present invention relates to a composite-concrete-steel double-wall hollow pipe column assembled node, comprising a prefabricated column, a reinforced concrete foundation / cap beam, and a high-strength non-shrinkage mortar layer; the prefabricated column comprises a composite pipe, a steel pipe, and a concrete layer, the composite pipe is sleeved outside the steel pipe, the space between the composite pipe and the steel pipe is filled with concrete to form a concrete layer, and one end of the steel pipe extends from one end of the composite pipe; a metal bellows is embedded in the reinforced concrete foundation / cap beam; the end of the steel pipe extending from the composite pipe is inserted into the metal bellows, and high-strength non-shrinkage mortar is poured between the metal bellows and the steel pipe to form a high-strength non-shrinkage mortar layer. The present invention also relates to a construction method for a composite-concrete-steel double-wall hollow pipe column assembled node. The present invention has the advantages of a clear force transmission path, good ductility, high integrity, excellent seismic performance, and controllable node quality, and belongs to the technical field of combined structure assembled buildings.

The invention discloses a roadway support device with an energy-absorbing buffer device, which comprises a support top beam, a support column and an energy-absorbing buffer device, and the energy-absorbing buffer device comprises a hydraulic buffer unit and a metal yield buffer unit; the hydraulic buffer unit is fixedly connected with the metal yield buffer unit; the hydraulic buffer unit comprises a cylinder body, a piston rod and a damping hole, and the metal yield buffer unit is a metal corrugated pipe which is axially compressed and deformed. Compared with the prior art, the hydraulic buffer unit has the advantages that the hydraulic buffer unit can quickly dissipate high-frequency impact energy and effectively cope with instantaneous strong impact by virtue of the cooperation of the damping hole with the variable-diameter design, the energy accumulator and the safety valve; the metal yield buffer unit adopts a metal corrugated pipe which is axially compressed and deformed, residual energy is absorbed through plastic deformation under the limit load, the metal corrugated pipe and the metal yield buffer unit are in two-stage linkage, impact energy levels with different strengths can be covered, the energy absorption efficiency is greatly improved, and the limitation of a single energy absorption mechanism is avoided.

The utility model discloses a fluid seal sealer, which belongs to the technical field of sealers and comprises a sealing connecting pipe, two connecting ring blocks are fixedly arranged in the sealing connecting pipe, the section of each connecting ring block is L-shaped, and a sealing washer is fixedly arranged on one side of each connecting ring block. The connecting ring block, the sealing washer, the threaded ring block and the metal corrugated pipe are arranged in the sealing connecting pipe, efficient and reliable sealing connection is achieved, the L-shaped section design of the connecting ring block is combined with the sealing washer, the sealing performance of the threaded connection position of the threaded ring block is guaranteed, fluid leakage is effectively prevented, and the sealing effect is good. Meanwhile, mounting and dismounting are more convenient and faster through the threaded connection mode, the maintenance efficiency is improved, the sealer is good in elasticity and flexibility due to the arrangement of the metal corrugated pipe, the sealer can adapt to pipeline deformation and vibration under different fluid working conditions, and then damage and leakage caused by working condition changes are effectively prevented.

The present application relates to the technical field of seam welder, and discloses a multi-layer metal bellows matched end seam welding tool.The present application comprises: a machine body internally provided with a driving device and a transformer, an upper welding wheel mechanism and a lower welding wheel mechanism are arranged on the machine body support table, an upper extension guide column capable of axial extension is arranged on the upper welding wheel mechanism, and an upper additional electrode wheel is arranged at one end of the upper extension guide column; a lower extension guide column capable of axial extension is arranged on the lower welding wheel mechanism, and a lower additional electrode wheel is arranged at one end of the lower extension guide column; the tool further comprises a synchronous driving mechanism for driving the upper extension guide column and the lower extension guide column to synchronously extend and retract.The synchronous design of the upper additional electrode wheel and the lower additional electrode wheel is matched with the synchronous driving mechanism to realize the synchronous extension and positioning of the two end electrode wheels, and the seam welding work of the two ends of the metal bellows can be completed at one time, thereby improving the processing efficiency.

The invention discloses multi-channel shunting pile side uniform grouting equipment which comprises a grout box, a first grout pump is arranged at a grout outlet of the grout box, and two sets of main grouting pipes are arranged at a grout outlet of the first grout pump. The grouting device further comprises a second slurry pump fixedly arranged on the slurry box and a secondary grouting pipe fixedly arranged on a slurry outlet of the second slurry pump. Through cooperation of the first backflow pipe, the second backflow pipe and the pressure confrontation assembly, the effect of comparing the intensity of pressure in the two main grouting pipes is achieved; the force clinker in the two telescopic flexible metal corrugated pipes can be directly observed through a second limiting block and a first limiting block, and the effect of conducting the force of slurry in the telescopic flexible metal corrugated pipe of the stronger side in the pressure confrontation assembly is achieved through the force conduction assembly. And through cooperation of a rectangular limiting pipe, a first toothed plate, a gear and a second toothed plate, the effect that the moving directions of the second toothed plate and the first toothed plate are opposite is achieved.

The application discloses a kind of weld pipe weld seam strength detection devices for metal bellows, it is related to metal bellows detection technical field.This kind of weld pipe weld seam strength detection devices for metal bellows, including the electric box and switch control box being set on rack.This kind of weld pipe weld seam strength detection devices and method for metal bellows, by simulating the principle of pipe hydraulic forming, liquid medium forming is changed to soft solid rubber forming, by exerting axial tension to cause rubber deformation bulging, and then causing welded pipe to occur deformation, by calculating the proportion of deformation bulging to evaluate weld quality, when continuous welded pipe, it needs to be sampled after welding specified length Test, the device only needs to be debugged when expanding pipe for the first time, testing in subsequent continuous production, can be directly used, more convenient and fast than detection of i-shaped piece, in addition, by reducing mold size, detection range is larger, the device is more convenient than special tension testing machine.

The utility model discloses a detachable metal corrugated pipe assembly, which relates to the field of metal corrugated pipes and comprises two corrugated pipe bodies which are spliced with each other, two ends of each corrugated pipe body are respectively and fixedly provided with an end head I and an end head II which have the same structure, and the inner walls of the end head I and the end head II are respectively and fixedly provided with a positioning plate and a sleeve plate. The positions of the sleeve plates correspond to those of the positioning plates, and the three sleeve plates and the three positioning plates are annularly and evenly distributed. The two corrugated pipe bodies are preliminarily butted and fixed in a mechanical mode, and the problems that in the prior art, when the two corrugated pipe bodies are preliminarily positioned and butted, the two corrugated pipe bodies are preliminarily fixed in a magnet mode, and when the corrugated pipe bodies are used for conveying heating gas, the magnets are prone to losing magnetism slowly, and the service life of the corrugated pipe bodies is prolonged are solved. And therefore, the magnetic property of the magnet is reduced and loses efficacy, and the corrugated pipe body is not convenient to reinstall after being disassembled next time.

The utility model provides a welding device capable of preventing deviation. The welding device comprises a mounting bracket; the left side of the mounting sleeve is rotationally connected to the right side of the mounting bracket; and the left side of the fixing assembly is rotationally connected to the right side of the mounting sleeve, the fixing assembly comprises a rotating disc, the left side of the rotating disc is rotationally connected to the right side of the mounting sleeve, and the left side of the rotating disc penetrates through the left side of the mounting sleeve and extends into the mounting sleeve. According to the welding device capable of preventing deviation, the two clamping plates are driven to slide leftwards on the inner side of the mounting sleeve through movement of the screw block, the two metal corrugated pipes move leftwards through movement of the two clamping plates, the two metal corrugated pipes are tightly extruded together, and therefore the two metal corrugated pipes are clamped; the structure is simple and practical, the two metal corrugated pipes can be clamped very conveniently, and the two metal corrugated pipes can be prevented from deviating in the welding process.

The application provides a wave sheet blanking device for welding metal corrugated pipes, which comprises a supporting table, the upper surface of the supporting table is connected with a cutting machine, one side of the cutting machine is provided with an feeding mechanism, and the other side of the cutting machine is provided with an discharging mechanism; the feeding mechanism and the discharging mechanism are the same in structure, the feeding mechanism comprises a corrugated pipe chute which is slidably connected to the top end of the supporting table, a driving pushing assembly which is arranged outside the end of the corrugated pipe chute away from the cutting machine, and a driven assembly which is arranged at the other end of the corrugated pipe chute; a plurality of spiral pushing pieces are connected between the driving pushing assembly and the driven assembly, and the spiral pushing pieces are used for pushing the metal corrugated pipe. The metal corrugated pipe is stably conveyed and output in the corrugated pipe chute through the contact between the spiral pushing piece and the metal corrugated pipe, so that the cutting machine can conveniently cut the metal corrugated pipe.

The metal corrugated pipe connecting structure comprises a corrugated pipe, a connecting pipe and two stopping pieces, the connecting pipe comprises a pipe body, a sealing sleeve and a double-end clamping ring, the sealing sleeve is annularly arranged on the inner wall of the pipe body, the double-end clamping ring is arranged in the pipe body, the two stopping pieces are arranged at the two ends of the pipe body respectively, and each stopping piece comprises a mounting ring, a rotating baffle and a limiting block; the mounting ring is connected to one end face of the pipe body, the limiting block is fixed to the mounting ring, and the rotating baffle is rotationally connected to the side, facing the double-end clamping ring, of the limiting block; the two corrugated pipes are clamped to the two ends of the double-end clamping ring correspondingly, and the rotating baffles can be pushed by the corrugated pipes to rotate in the direction close to the inner wall of the pipe body when the corrugated pipes enter the pipe body and rotate into wave troughs of the corrugated pipes when the corrugated pipes are clamped to the double-end clamping ring. The double-end clamping ring is arranged to be used for clamping the end faces of the two corrugated pipes, the stopping piece is arranged to be used for being clamped in one wave trough of the corrugated pipes, and therefore splicing of the two corrugated pipes is achieved, the structure is simple, and installation is convenient.

The utility model discloses a steam pipeline drainage recycling device which is used for being connected to a main steam pipeline and comprises a drainage pipeline, a three-way pipe is arranged on the main steam pipeline, and the drainage pipeline is connected with the three-way pipe. A drainage pipeline is arranged at one end of the drainage pipe, a metal corrugated pipe is arranged on the drainage pipeline, the metal corrugated pipe is connected with a three-way pipe, a liquid collection cylinder is arranged at the other end of the drainage pipeline, a liquid recovery pipeline is arranged on the liquid collection cylinder, a liquid drainage pipeline is further arranged on the liquid collection cylinder, and a liquid level sensor is arranged in the liquid collection cylinder; the condensate water drainage device has the advantages that the metal corrugated pipe is arranged on the drainage pipeline, the liquid level sensor is used for monitoring the liquid level of condensate water in the liquid collecting cylinder in real time, when the liquid level of the condensate water reaches a preset alarm value, the liquid drainage pipeline is automatically opened, accurate drainage of the condensate water can be achieved, and the drainage effect is good. Condensate water is effectively prevented from being accumulated in the pipeline, and therefore the operation efficiency and safety of the main steam pipeline are improved.

This invention discloses a forming apparatus for graded pressing of thin-walled, large-angle corrugated ring segments, relating to the field of metal corrugated pipe forming. It includes a forming machine and pre-pressing components and forming pressing molds arranged on the forming machine. The pre-pressing component includes multiple pre-pressing molds arranged sequentially near the forming pressing molds. Each pre-pressing mold includes an upper pre-pressing mold and a lower pre-pressing mold. The top of the lower pre-pressing mold has a pre-pressed corrugated ring segment groove, and the bottom of the upper pre-pressing mold has a pre-pressed corrugated ring segment body fixed thereon. The forming pressing mold includes an upper forming mold and a lower forming mold. The top of the lower forming mold has a forming corrugated ring segment groove, and the bottom of the upper forming mold has a forming corrugated ring segment body fixed thereon. The large-angle corrugated ring segment blanks formed by the multiple pre-pressing molds gradually approach the standard large-angle corrugated ring segment. Through multi-stage progressive forming, the deformation of the arc-shaped blank is evenly distributed in each pressing stage, significantly reducing the incidence of defects such as corrugation cracking, circumferential wrinkling, and non-adherence to the mold.

The invention relates to the technical field of special storage equipment, and provides a chemical raw material anti-leakage storage tank which comprises a tank body. An inner container is fixedly mounted in the tank body, so that leakage of a single-layer tank body is prevented; a feeding hole is fixedly formed in the top of the inner container, and a discharging hole is fixedly formed in the bottom of the tank body; the top end of the feeding port and the bottom end of the discharging port are each fixedly provided with a three-stage sealing assembly, and chemical raw materials in the tank body are prevented from leaking from the connector. By means of a double-layer protection structure formed by the tank body and the inner container, physical isolation is formed on the main body portion of the tank body, even if the inner container is corroded by chemical raw materials or fatigued to generate tiny leakage, the chemical raw materials can be limited in a cavity between the inner container and the tank body and cannot directly leak to the external environment, and the connector can be preliminarily sealed through the annular sealing ring; axial, transverse and angular displacement between the tank body and the pipeline caused by temperature change, pressure fluctuation or external force can be compensated through the metal corrugated pipe.

The invention relates to a retractable air spring bellows (100) with an outer metal bellows hose (111) and an inner metal bellows hose (112), which are coupled by a connecting sleeve (120). In order to stabilize the movement, guide elements (161, 162) are provided, which limit the deviation of the movement of the inner and / or outer metal corrugated hose (111, 112) from the axial direction (X). The guide element may, for example, comprise spacer elements (161, 162) arranged between the connecting sleeve (120) on the one hand and the outer or inner metal corrugated hose on the other hand.

A grouting metal corrugated pipe with key teeth for steel bar anchoring comprises a corrugated pipe body and the key teeth located at wave troughs of the outer wall of the corrugated pipe body. The bottom of the corrugated pipe main body is closed, the top of the corrugated pipe main body is open, the opening is used for inserting a reinforcing steel bar extending from an adjacent connecting component, and the reinforcing steel bar inserted into the opening and the corrugated pipe main body form reliable anchoring through a grouting material; the key teeth are in a semi-conical shape, a double-semi-conical shape or a semi-cylindrical shape; the key teeth and the corrugated pipe main body are connected together through integral casting processing, welding or a connecting piece; when the corrugated pipe structure with the key teeth is used for grouting corrugated pipe connection, the bonding and anchoring performance of the corrugated pipe and common concrete can be improved, the problem of stress concentration is effectively solved, the anchoring length of the corrugated pipe is reduced, and the problem that when high-performance grouting materials are used, the service life of the corrugated pipe is prolonged is solved. And in addition, the structure and the method are simple in process, and the arrangement position is flexible.

The utility model belongs to the field of hoses, and particularly relates to a pressure-resistant hose and a pressure-resistant hose assembly. In order to avoid rapid failure of the pressure-resistant hose after the outer protective layer is damaged, the pressure-resistant hose comprises a metal corrugated pipe layer and the outer protective layer located outside the metal corrugated pipe layer, the metal corrugated pipe layer comprises a metal corrugated pipe, each wave crest of the metal corrugated pipe is in close contact with the inner wall of the outer protective layer, and the outer protective layer is located outside the metal corrugated pipe layer. The metal corrugated pipe layer further comprises sealing rings arranged outside all wave troughs of the metal corrugated pipe in a sleeving mode, and the sealing rings outside all the wave troughs are extruded and make close contact with the inner wall of the outer protection layer. The utility model further discloses a pressure-resistant hose assembly comprising the pressure-resistant hose. In the using process, when the outer protective layer is damaged, seawater enters the metal corrugated pipe layer from the crevasse, the sealing rings on the two axial sides of the crevasse can prevent the seawater from spreading in the metal corrugated pipe layer, and the whole metal corrugated pipe is prevented from being crushed.

The utility model discloses an inner oil type metal corrugated oil storage tank that can carry out positive pressure sealing test relates to metal corrugated oil storage tank technical field, including the shell body, the lower wall inner surface of shell body is equipped with the core body lower end plate, the inside of shell body is equipped with the core body upper end plate with the position of core body lower end plate corresponds, be equipped with the corrugated core body between core body upper end plate with core body lower end plate, the upper surface both ends of core body upper end plate are equipped with the crossbeam, the both ends of two crossbeams are equipped with the limit end, the lower of shell body with the limit end corresponding position of limit end is passed through and is connected with the sliding limit sleeve, the upper end of limit sleeve is equipped with the limit pin, the limit pin with limit end splices and inserts the connection, the inside of limit sleeve is sleeved with display rod, and the structure is simple, and the operation is convenient to wear pin pull rod, and the product cost of positive pressure resistant structure is reduced greatly.