22results about How to "Increased ring stiffness" patented technology

The utility model discloses a corrosion-resistant metal lining socket type multilayer pipe, which belongs to the technical field of pipes and comprises an inner pipe, a middle layer and an outer pipe which are sequentially sleeved from inside to outside, steps and / or grooves are arranged on the inner wall of a socket end, and the inner pipe, the middle layer and the outer pipe are adhered to form the pipe or compressed to form the pipe. The outer pipe comprises a socket end, a pipe body and a spigot end which are connected in sequence, the outer pipe is made of metal, the inner pipe is made of a corrosion-resistant material, each end of the pipe is provided with a sealing layer and a lining ring made of a corrosion-resistant metal material, and the length of each lining ring extending into the pipe is not less than 20mm. The anti-corrosion pipeline is good in anti-corrosion effect, and the water conveying efficiency of the pipeline is improved. The corrosion-resistant metal lining ring prevents each layer of material from being stripped; and the strength and the deformation resistance of the pipe are improved.

The invention discloses an HDPE (high-density polyethylene) double-wall corrugated pipe reinforced master batch, which belongs to the technical field of high polymer materials and comprises the following materials in parts by weight: 50-70 parts of UHMWPE (ultrahigh molecular weight polyethylene), 30-40 parts of modified inorganic fiber and 5-10 parts of polyethylene wax. The molecular weight of the UHMWPE is 0.5 to 1.5 million; in the preparation process of the enhanced master batch, the length-diameter ratio of a twin-screw extruder is greater than or equal to 48: 1, and the temperature of an extruded melt is 220-240 DEG C. By adopting an ultra-high molecular weight polyethylene molecular chain entanglement regulation and control technology, an ultra-long molecular chain of UHMWPE is unwound under melt extrusion, the molecular chain is wound on the surface of the modified columnar inorganic fiber, the degree of freedom of the ultra-long molecular chain is constrained and limited, the creep retraction capability of the composite material is reduced, the ring stiffness is greatly improved, and the performance of the composite material is improved. And the impact performance is improved.

The utility model discloses a high-modulus square buried structural wall pipe which comprises a pipe body, the pipe body is of a square structure, a pipe wall is arranged on the edge of the pipe body, corrugations are arranged on the pipe wall, a plurality of sets of corrugations are distributed on the surface of the pipe wall, corners of the pipe wall are vertically downward, arc angles are arranged on the edges of the corrugations, a pipe opening is formed in the pipe body, and the pipe opening is communicated with the pipe body. The pipe opening is a square opening, and a second arc angle is arranged at the corner of the pipe opening. The utility model has the advantages that the stability, the flow passing capacity and the construction convenience of the pipeline are improved.

The utility model relates to a kind of high trapezoidal multi-hole high cavity reinforced structure wall pipe, including pipeline main body, reinforcing rib is formed with spiral winding in pipeline main body outer end face, it is hollow, and cross-sectional shape is set to trapezoidal;Reinforcing rib outer end face spiral winding is formed with reinforcing pipe, reinforcing pipe is hollow tubular structure, its cross-sectional shape is circular, the outer diameter of reinforcing pipe is not greater than the maximum width of reinforcing rib;Reinforcing frame is arranged in the cavity of reinforcing rib, and it is tightly arranged with the inner wall of reinforcing rib, corrugated pipe is arranged in reinforcing pipe, and it is tightly arranged with the inner wall of reinforcing pipe.Compared with the defect that existing circular reinforcing rib is prone to depression, cracking under asymmetric load, the structure wall pipe is designed through trapezoidal cross-section reinforcing rib, utilizes the advantage that trapezoidal structure stress dispersion is uniform, lateral pressure resistance is strong, efficiently transfers external force such as soil pressure, ground load to pipeline main body, avoids local stress concentration.

This utility model belongs to the field of drainage pipe technology, specifically relating to a PVC sewage drainage pipe with a noise reduction structure. It includes a floor slab layer, a shock-absorbing layer fixedly connected to the inner wall of the floor slab layer, a heat insulation layer fixedly connected to the inner wall of the shock-absorbing layer, reinforcing ribs fixedly connected to the inner wall of the heat insulation layer, a thermal insulation layer fixedly connected to the inner wall of the thermal insulation layer, an inner pipe fixedly connected to the inner wall of the thermal insulation layer, and multiple protruding rods fixedly connected to the inner wall of the inner pipe. A protective device for the drainage pipe is provided on the top of the floor slab layer. The protective device includes two protective plates, the bottoms of which are both located on the top of the floor slab layer. This utility model solves the problem that the noise reduction design of the device sacrifices the overall rigidity of the pipe material. While a softer material layer can effectively absorb sound energy, it has weak resistance to instantaneous external forces, making it prone to dents, cracks, or even breakage. This invention enhances rigidity and improves resistance.

The utility model discloses a corrugated high-temperature-resistant cable protection tube, which belongs to the technical field of cable protection tubes and comprises an inner tube body, and a honeycomb tube body is wrapped on the outer wall of the inner tube body. The outer pipe body wraps the side, away from the inner pipe body, of the honeycomb pipe body, a corrugated pipe body is spirally wound on the outer wall of the outer pipe body, air holes are formed in the corrugated pipe body, flange rings are arranged at the two ends of the outer pipe body, and mortises are formed in the sides, away from each other, of the flange rings. Through the arrangement of the corrugated pipe body matched with the arrangement of the honeycomb pipe body, the overall pressure resistance of the cable protection pipe can be greatly improved, and meanwhile through the auxiliary improvement of the buffering effect, the impact resistance effect of the pipe body is further improved, so that the ring stiffness of the cable protection pipe is further improved, and the service life of the cable protection pipe is prolonged. And the situation that the pipe body is pressed to deform or crack due to insufficient ring stiffness is effectively reduced.

The utility model relates to the technical field of corrugated pipes, in particular to a large and small double-wave reinforced Y-shaped reinforced pipeline which comprises a pipeline body, a plurality of large wave crests are fixedly connected to the outer wall of the pipeline body, the large wave crests are arranged in a pairwise clinging mode, reinforcing ribs are fixedly connected to the inner walls of the large wave crests, and the reinforcing ribs are arranged on the outer wall of the pipeline body. A plurality of small wave crests are fixedly connected to the outer wall of the pipeline body, the small wave crests and the large wave crests are arranged in a staggered mode, an annular groove is formed in the outer wall of the left end of the pipeline body, an annular protruding block is fixedly connected to the outer wall of the right end of the pipeline body, and the annular protruding block corresponds to the annular groove in position. According to the utility model, the bearing capacity of the pipeline can be greatly enhanced, the impact resistance and the ring stiffness of the pipeline main body can be enhanced, meanwhile, the bearing and pressure resistance of the pipeline main body during original soil backfilling are ensured, the impact resistance and the ring stiffness of the pipeline main body are improved, and the situation that water seepage is caused by the fact that the inner wall is broken by different stones is avoided.

This invention discloses a solid-wall spiral wound tube extrusion production equipment, belonging to the technical field of spiral wound tube forming equipment. It includes an injection molding machine body with a forming assembly mounted on it; a drive assembly includes a first gear rotatably mounted on the forming assembly and a second gear meshing with the first gear, the second gear being driven by a second motor; a feeding assembly includes an electric cylinder and a guide tube slidably connected to the first gear, a connecting plate mounted on the output end of the electric cylinder being rotatably connected to the guide tube, an electric gripper mounted on the guide tube, a driven roller rotatably mounted on one arm of the electric gripper, and a clamping rod fixedly mounted on the other arm. The driven roller of this invention, through its dual function of clamping and pressing, achieves seamless connection of molten material guidance, stable winding, and interface adhesion during the spiral wound tube production process; the top roller and the roller body work together to effectively prevent reverse slippage of the extruded material during winding, ensuring the continuity and stability of the winding process.

This invention relates to the field of power cable technology, specifically to a low-temperature resistant, crack-resistant protective conduit for communication and power cables. It includes a cable body with an inner insulation structure. The insulation structure includes a first positioning ring and a second positioning ring located inside the cable body. The outer wall of the second positioning ring has a heating wire groove, and the inner side of the heating wire groove has a heating wire body. An installation head is fixedly connected to the outer wall of the second positioning ring, and a connecting post is fixedly connected between the installation heads. The side wall of the connecting post has a wire-passing groove. The venting structure includes a venting ring fixedly fitted around the outer ring of the cable body, and multiple venting pipes are fixedly connected to the outer wall of the venting ring. This invention provides a low-temperature resistant, crack-resistant protective conduit for communication and power cables, which has the advantages of heating and insulation in low-temperature environments, automatic venting, and high overall cable stability and compressive strength.

This utility model relates to the field of power facility technology, and in particular to a PE and PVC blended structural wall pipe. The technical solution includes: a pipe body and an overhead ring. The pipe body is composed of a non-toxic bitter layer, a hardened layer, a composite layer, a core, and an antistatic coating. The non-toxic bitter layer, hardened layer, composite layer, core, and antistatic coating are arranged sequentially from the outside to the inside. The outer ring surface of the overhead ring is equidistantly fixed with ball seats, and rolling balls are rotatably mounted on the ball seats, rolling in contact with the inner wall of the pipe body. This utility model, through the synergistic design of a multi-layered composite protective pipe body and a ball-supported overhead ring, achieves an integrated cable protection structure that is rodent-proof, abrasion-proof, antistatic, and has high-strength compressive strength, significantly improving the safety and durability of cable laying.

The present invention discloses a pressure-resistant PVC-U pipe and a preparation method thereof, and relates to the technical field of PVC pipes. A pressure-resistant PVC-U pipe is provided with an inner pipe, a fiber-reinforced layer and an outer pipe in sequence from the inside to the outside, wherein the inner pipe and the outer pipe are both made by extrusion of PVC resin, and the fiber-reinforced layer includes silane-coupled modified glass fibers woven and wrapped around the outer surface of the inner pipe. By compounding a fiber-reinforced layer formed by weaving silane-coupled modified glass fibers in the PVC-U pipe, the ring stiffness and impact strength of the PVC-U pipe can be effectively improved, thereby improving the compressive performance of the PVC-U pipe.

This utility model discloses a multi-layer inner-lined flexible hose for in-situ repair of water supply and drainage pipelines. The utility model includes a first hose body, a second hose body, screws, and a compensating sealing assembly. A first connector is fixedly installed at the end of the first hose body, and a groove is formed at the top of the first connector. The second hose body is fixedly installed on top of the first hose body, and a second connector is fixedly installed at the end of the second hose body. The screw passes through a mounting hole and is threaded into a threaded groove. The compensating sealing assembly includes a first fixing ring inserted into the groove, a spring fixedly installed at the top of the first fixing ring, a second fixing ring fixedly installed at the top of the spring, a sealing ring bonded to the top of the second fixing ring, and sealant filled within the sealing ring. This utility model, by incorporating the first connector, second connector, screws, and compensating sealing assembly, significantly reduces obstruction from the connection and fixing structure, and achieves a good sealing effect.

The invention discloses a high-strength MPP cable protection tube, belongs to the technical field of cable processing, and is used to solve the technical problem that the strength and flame retardant performance of the MPP cable protection tube in the prior art need to be further improved; the invention comprises: a flame retardant shielding layer, and an MPP layer wrapped outside the flame retardant shielding layer, wherein a modified cross-linking agent is prepared, and a modified polypropylene is radiatively cross-linked to form a complex spatial structure, zeolite is modified to obtain a modified foaming aid having a large number of active sites, and a foaming agent is filled inside the modified foaming agent to obtain a modified foaming agent, and the cross-linked polypropylene is fully foamed through the gas slow release effect of the internal pores, and the cross-linked polypropylene is used as a heterogeneous nucleation site to form a β crystal form, thereby improving the strength of the material, and the protective tube has excellent flame retardant performance through the synergistic cooperation between the hierarchical structures, and finally a high-strength MPP cable protection tube with high ring stiffness, wear resistance, flame retardancy and high electromagnetic shielding effectiveness is obtained.

The utility model discloses a heat dissipation cable, and relates to the technical field of wires and cables. A heat dissipation cable comprises a heat dissipation section, the heat dissipation section comprises a cable core, a braid layer, an outer sheath and a heat dissipation frame made of a high-heat-conduction metal material, the heat dissipation frame comprises a guide pipe frame and heat dissipation wing plates which are located on a center shaft of the cable, the guide pipe frame is of a hollow tubular structure, and the heat dissipation wing plates are arranged on the peripheral side of the guide pipe frame in a surrounding mode. The cable cores are uniformly arranged between the adjacent heat dissipation wing plates, heat-conducting rubber materials are filled between the cable cores and the heat dissipation wing plates, and the braided layer and the outer sheath sequentially wrap the peripheral side of the heat dissipation frame. By arranging the heat dissipation frame made of the high-heat-conduction metal material in the heat dissipation section, the ring stiffness of the heat dissipation section can be improved, the compression resistance and impact resistance of the heat dissipation cable can be improved, the heat conduction efficiency and the heat dissipation efficiency in the heat dissipation section can be effectively improved, and the heat accumulation effect in the heat dissipation cable can be prevented.

The utility model discloses a buried or trenchless three-layer co-extrusion modified polypropylene power cable protection pipe, which consists of an outer pipe layer, a middle pipe layer and an inner pipe layer, and is characterized in that the outer pipe layer 1 and the inner pipe layer 3 are both of a flat-wall pipe structure, the middle pipe layer 2 is of a corrugated structure and comprises a convex annular cylinder 21 and a concave annular cylinder 22, and the convex annular cylinder 21 and the concave annular cylinder 22 are arranged on the outer pipe layer 1 and the inner pipe layer 3. The convex annular cylinders 21 and the concave annular cylinders 22 are alternately, circularly and continuously distributed; when horizontal directional drilling back-dragging is carried out, a pipe cap 4 is adopted to be connected with the buried or trenchless three-layer co-extrusion modified polypropylene power cable protection pipe through a pipe hoop 5, one end of a back-expanding head 6 is connected with the pipe cap 4, the other end of the back-expanding head 6 is connected with a drill rod 7, and a power head 8 is connected with the drill rod 7. And the back-expanding head 6 and the three-layer co-extrusion modified polypropylene power cable protection pipe are driven to perform reverse back-dragging movement at the same time until the three-layer co-extrusion modified polypropylene power cable protection pipe is dragged to a designated position, and pipeline laying construction is completed.

The application relates to a fiber-reinforced wave-absorbing pipe and belongs to the technical field of pipe materials. In order to solve the problem of poor electromagnetic shielding of existing pipes, the fiber-reinforced wave-absorbing pipe comprises an outer layer, a middle wave-absorbing functional layer and an inner layer, the middle wave-absorbing functional layer is located between the outer layer and the inner layer, and the middle wave-absorbing functional layer comprises the following components in mass percentage: high-density polyethylene: 70-85%; boron-doped SiC nanofiber: 10-28%; silane coupling agent: 0.1-1.5%; antioxidant: 0.15-0.3%; and dispersant: 0.2-0.5%. The fiber-reinforced wave-absorbing pipe can effectively absorb and attenuate electromagnetic waves in the frequency band of 8-18 GHz, the minimum reflection loss (RL min ) of the pipe material in the frequency band of 8-18 GHz (Ku band) reaches -45 dB to -60 dB, and the overall mechanical properties of the pipe material are better ensured.

The utility model relates to MPP cable protection pipe technical field, and disclose a kind of MPP cable protection pipe of convenient lap, including MPP cable protection pipe body, the surface of MPP cable protection pipe body is connected with first connecting ring, MPP cable protection pipe body inside is slidably connected with several connecting plates, the surface of MPP cable protection pipe body is slidably connected with second connecting ring, second connecting ring side is rotatably connected with several fixed bolts, several connecting plates side is provided with driving mechanism, several fixed bolts side is provided with synchronous rotating mechanism of driving several fixed bolts rotation, second connecting ring surface is provided with the stabilizing mechanism for the secondary firm of MPP cable protection pipe body, the equipment need not welding, it is convenient to connect MPP cable protection pipe body, reliable simultaneously firm, improve the tensile strength and ring stiffness of connecting place, avoid the risk of cracking or pulling off, so that the quality and safety of entire project are guaranteed.

The invention relates to the technical field of double-wall corrugated pipes, in particular to a polyolefin alloy material double-wall corrugated pipe which comprises a double-wall corrugated pipe body, a first connector and a second connector are arranged at the two ends of the double-wall corrugated pipe body respectively, the first connector comprises an inner cylinder arranged at a port of the double-wall corrugated pipe body in a communicating mode, and an outer cylinder is arranged on the outer side of the inner cylinder in a sleeving mode. An inner ring is arranged in an annular space defined by the outer cylinder and the inner cylinder in a sliding mode, a straight cylinder arranged on the inner cylinder in a sliding and sleeving mode is arranged on the inner ring, a conical opening is formed in an end opening of the straight cylinder, the second connector is a cylinder body installed on the end face of the other side of the double-wall corrugated pipe body, and threads are arranged on the outer wall of the cylinder body; when the second connector is connected with the first connector, the second connector is inserted into the outer cylinder and meshed with the inner wall of the outer cylinder in a threaded mode, when the second connector is connected with the first connector, due to the fact that the second connector pushes the conical opening, the inner ring moves inwards to stretch the spring, and the elastic force of the spring is utilized to enable the conical opening to be in contact with the inner wall of the second connector all the time.

The invention discloses a high-rigidity high-toughness anti-aging MPP material, a cable conduit and a preparation method and application thereof, and relates to the technical field of high polymer materials. The MPP material comprises the following components in parts by mass: 75-95 parts of polypropylene resin, 2-10 parts of a toughening agent, 2-6 parts of PE, 0.5-3 parts of anti-aging master batch and 2-10 parts of stiffening master batch. The reinforcing master batch is prepared from talcum powder, wollastonite and polypropylene in a mass ratio of (2.5-3.5): (0.8-1.2): (0.8-2). The polypropylene resin is used as matrix resin, the rigidity-increasing master batch is added to improve the ring stiffness of the material, the rigidity-increasing master batch can improve the rigidity and thermal stability of the material by using the talcum powder with a sheet structure, and the rigidity and hardness of the material can be improved by matching the wollastonite with a fibrous structure. Meanwhile, a small amount of PE, the flexibilizer and the anti-aging master batch are added, so that the toughness and the anti-aging property of the material can be synergistically improved.

The invention discloses a steel belt corrugated pipe which comprises a polyethylene coating layer, a steel belt, a polyethylene pipe body and a bonding resin layer. The whole cross section of the steel belt is in an arch bridge shape, the two sides of the steel belt horizontally extend to form fixing parts, the top ends of wave crests of the steel belt are vertically sunken downwards to form flat pits, and the bottom ends of the flat pits are horizontal and flush with the bottom faces of the fixing parts. The steel belt is spirally wound on the periphery of the polyethylene pipe body, the surface of the steel belt is coated with the bonding resin layer, the polyethylene wrapping layer covers the surfaces of the polyethylene pipe body and the steel belt, the flat pits are filled with the polyethylene wrapping layer to form a supporting interlayer, and the top ends of the flat pits are filled with the polyethylene wrapping layer to form a complete arch-bridge-shaped structure. A complete arch-bridge-shaped steel belt of an existing steel belt corrugated pipe is improved, the top ends of the wave crests of the steel belt corrugated pipe are downwards and vertically sunken to form the flat pits, and the supporting columns which vertically and downwards directly act on the peripheral wall of the polyethylene pipe body are arranged in the centers of the wave crests after forming, so that the overall ring stiffness of the pipe can be greatly improved, and the anti-pressure capacity of the pipe can be improved.

The invention relates to the technical field of non-pressure-bearing polyethylene drainage pipes, and discloses a non-pressure-bearing polyethylene drainage pipe which comprises a core layer, an inner layer is arranged in the core layer, and an outer layer is arranged outside the core layer. High-density polyethylene and low-density polyethylene are used as raw materials, the chemical resistance and impact resistance of the pipe are improved, the stability and long-term durability of a drainage system are ensured, and the production process comprises the steps of mixing the materials according to the proportion of 7: 3, heating to 170 DEG C for melting, extruding, drawing and forming, cooling to 20 DEG C, spraying codes and printing product marks, and detecting a semi-finished product after cutting. According to the method, the production process is optimized, the product quality is improved, the repair rate is greatly reduced, the production efficiency is improved, reasonable allocation of resources is realized, the production cost is reduced, the production efficiency is improved, the production cost is reduced, the production efficiency is improved, the production cost is reduced, the production cost is reduced, and the production efficiency is improved. And the waste in the production link is reduced.

The application belongs to the field of molecular composites, and discloses a multi-layer co-extrusion MPP cable protection pipe and a preparation method thereof. From inside to outside, the pipe comprises a conductive wear-resistant inner layer, a reinforcing and toughening intermediate layer and a weather-resistant and flame-retardant outer layer, and the three layers are combined and formed through a co-extrusion process. In view of the technical defects and industry common pain points in the prior art, such as the single function of the single-layer structure, the poor interlayer bonding force of the multi-layer structure, the poor conductive modification effect, the many drawbacks of the glass fiber reinforcement, the mechanical property decline caused by the flame-retardant modification and the like, the application provides a multi-layer co-extrusion MPP cable protection pipe and a preparation method thereof.