31results about How to "Increased shear strength" patented technology

The present application relates to the technical field of bamboo fiber composite material, in particular to a purification preparation method of bamboo fiber reinforced natural polymer composite material. The bamboo raw material is crushed and treated by steam explosion to obtain primary bamboo fiber; the primary bamboo fiber is sequentially subjected to organic solvent dewaxing treatment and oxidation system selective delignification treatment to obtain purified bamboo fiber; the purified bamboo fiber is treated in a tannin acid solution to form a polyphenol interface layer on the surface thereof; and a solution containing polyvalent metal ions is added to the treated bamboo fiber to form a coordination cross-linking interface layer on the surface of the bamboo fiber. The present application constructs a stable interface layer between the fiber and the natural polymer matrix. The interface layer can effectively transfer stress, significantly improve the tensile strength, bending strength and shear strength of the composite material, and solve the problem of weak interface and easy delamination of traditional natural composite materials.

This invention relates to transition layer materials and welding processes for welding dissimilar steel and aluminum materials, belonging to the field of welding technology. The transition layer material for welding dissimilar steel and aluminum materials of this invention comprises a copper layer, a copper alloy layer, and a zinc alloy layer arranged sequentially; the copper layer is adjacent to the steel base material, and the zinc alloy layer is adjacent to the aluminum base material; the copper content in the copper alloy layer is 62.0%-64.0%; the zinc content in the zinc alloy layer is 89.0%-91.0%; the mass ratio of the copper layer, copper alloy layer, and zinc alloy layer is (0.9-1.1):(2.3-2.7):(1.8-2.2). By sequentially setting the copper layer, copper alloy layer, and zinc alloy layer between the steel base material and the aluminum base material, a gradual transition from the steel base material to the aluminum base material is achieved, effectively avoiding the formation of brittle Fe-Al intermetallic compounds during direct welding, and enhancing the mechanical properties and durability of the welded joint.

The application provides a two-component polyurethane pouring sealant and a preparation method and application thereof. The two-component pouring sealant comprises an A component and a B component. The A component comprises propylene oxide modified lignin polyol and erythritol modified polyether polyol. The B component comprises cashew phenol based polyurethane prepolymer. The propylene oxide modified lignin polyol, the erythritol modified polyether polyol and the cashew phenol based polyurethane prepolymer have a synergistic effect, which can significantly improve the shear strength of the pouring sealant at high temperature, and the pouring sealant has good low-temperature bonding performance, aging resistance and impact resistance. Specifically, the shear strength at 60 DEG C is greater than 13 MPa, the shear strength remains above 12.5 MPa after aging in a double 85 environment, the attenuation rate is less than 7% compared with the shear strength at room temperature, the shear strength can remain above 13 MPa after high-low temperature impact test, the attenuation rate is less than 3%, and the pouring sealant meets the pouring requirements of power batteries in the field of new energy batteries.

This utility model discloses a quick-installation and quick-disassembly connection device for door and window sashes, including a first connecting seat for connecting the door and window sashes and a second connecting seat for connecting the hinges. The first connecting seat has a receiving cavity, and the second connecting seat has a limiting part that can extend into the receiving cavity. A locking member that can lock with the limiting part is movably connected in the receiving cavity, thereby connecting the second connecting seat and the first connecting seat. A pressing member that can drive the locking member to disengage from the limiting part is also movably connected in the first connecting seat. The locking member is elastically connected to the first connecting seat, thereby enabling the pressing member to reset and lock the locking member with the limiting part. The user only needs to press once to trigger the separation of the locking member from the limiting part, realizing the quick disassembly of the movable sash. After releasing the pressing member, the locking member can automatically reset under the drive of the elastic connection and re-lock with the limiting part. The entire process does not require the use of screwdrivers or other tools, greatly simplifying the operation steps, eliminating screw fixation, and improving installation efficiency and aesthetics.

This invention relates to the technical field of road engineering, and in particular to a method for converting old road structures into long-life pavement structures based on low-carbon cold recycling, comprising the following steps: S1, milling and recycling of the old pavement layer; S2, conversion of the semi-rigid base course system by vibratory compaction using a road roller to convert the semi-rigid base course into a granular flexible subbase course; S3, injection of a semi-flexible isolation layer; injection of a highly permeable slurry into the crushed base course to form a flexible recycled isolation layer; S4, forming of the flexible recycled base course; uniformly spreading a mixture of milled recycled material and new aggregate on the isolation layer, and simultaneously spraying and injecting bio-based modified emulsified asphalt; S5, laying of a low-carbon surface layer; spraying a modified emulsified asphalt tack coat onto the surface of the flexible recycled base course, followed by spreading a rubber asphalt concrete surface layer, and finally compacting it. The construction method of this invention solves the problems of "high carbon emissions, rapid recurrence of reflective cracks, and short lifespan" in traditional old road reconstruction and expansion.

This utility model relates to the field of paving brick technology and discloses a high-quality permeable paving brick made of natural sand, including a permeable skeleton layer, a bottom layer of high-quality natural sand permeable paving bricks at the bottom of the permeable skeleton layer, and a top layer of high-quality natural sand permeable paving bricks at the top of the permeable skeleton layer. In use, the corresponding conical drainage channels and through holes are coaxial and connected, achieving dual-effect permeability through siphoning and flushing. When water flows through the surface layer of the high-quality natural sand permeable paving bricks, the conical drainage channels increase the flow velocity and generate negative pressure suction. When the water flow is large, a high-speed jet forms in the channels to flush away sediment. The bricks are arranged in a honeycomb pattern during laying, and the corresponding arc-shaped male tenons and arc-shaped female tenons form an interlocking structure. The curved joints can automatically level the angle, and the interlocking structure increases the effective permeable joint width, thus improving permeability. The drainage channels in the interlocking area can form a dual drainage channel with the vertical infiltration holes.

This invention relates to the field of knife manufacturing technology and discloses a method for preparing a knife with antibacterial effects, comprising the following steps: smelting a nitrogen-containing antibacterial martensitic stainless steel blade blank; heating, cooling, and tempering the nitrogen-containing antibacterial martensitic stainless steel blade blank to obtain the blade; hot isostatic pressing of a pure titanium ingot to obtain a densified titanium metal handle; and connecting the blade to the densified titanium metal handle using a tin-silver-based brazing filler metal at 680°C to 750°C via induction heating. This invention solves the problems of decreased hardness and corrosion resistance caused by silver precipitation through the synergistic effect of nitrogen and silver, utilizing nitrogen solid solution strengthening and potential compensation mechanisms; and employs a low-temperature tin-containing brazing process to construct a physical barrier layer, blocking carbon diffusion to the titanium side and the formation of brittle phases, thus avoiding over-tempering softening of the blade substrate, resulting in a knife with high hardness, corrosion resistance, long-lasting antibacterial properties, and high connection strength.

The application discloses an epoxy resin composite Sn-Bi-Sb lead-free soldering paste and a preparation method thereof, and belongs to the field of soldering materials of metal materials and metallurgy. The epoxy resin composite Sn-Bi-Sb lead-free soldering paste is composed of 3-6% of a mixture of an epoxy resin, a curing agent and an accelerator, 1.5-5.0% of nano silver paste, and the balance of a commercial Sn-Bi-Sb soldering paste. In the mixture of the epoxy resin, the curing agent and the accelerator, the mass percentage of each component in the composition is epoxy resin: curing agent: accelerator = 100: 70-85: 4-9. The epoxy resin composite Sn-Bi-Sb lead-free soldering paste has good wetting and spreading performance, can significantly improve the shear strength and drop resistance of a soldering joint, and can be used for reflow soldering of some products in the electronic industry which have specific requirements for temperature and drop resistance.

This invention relates to the field of spring clip molding technology, and particularly to a spring clip molding mold and process based on long carbon fiber reinforcement. The mold includes an upper pressure plate, a lower pressure plate, and an upper pressure head. An upper mold cavity seat, a middle transition body, and a bottom support leg are vertically arranged between the upper and lower pressure plates. A push rod is provided on the inner side of the bottom support leg. A cylindrical mold cavity hole is provided inside the upper mold cavity seat, and two L-shaped side sliders and a central core assembly are arranged inside the cylindrical mold cavity hole. The process steps include: mixing long carbon fibers with a thermoplastic matrix, heating to obtain a melt, transferring the melt into a mold, closing the mold and applying pressure, and obtaining a hollow cylindrical blank after holding pressure and cooling. The hollow cylindrical blank is then cut and machined. This invention eliminates the prepreg preparation process, resulting in a shorter process flow, higher production efficiency, better uniformity of spring clip dimensions, continuous and intact fibers in the groove area, and significantly improved mechanical properties.

This application belongs to the field of metal composite plate preparation, specifically relating to a 304 stainless steel-high manganese steel composite plate and its preparation method. The preparation method includes the following steps: S1, obtaining 304 stainless steel slabs and high manganese steel slabs, stacking and welding the 304 stainless steel slabs and high manganese steel slabs to obtain a first composite slab; S2, heating the first composite slab to obtain a second composite slab; S3, rolling the second composite slab to obtain the 304 stainless steel-high manganese steel composite plate. This application solves the problem of "excessive thinning of the soft phase" caused by the hardness difference in "soft / hard" composite plates during rolling by introducing a thickness ratio compensation formula in the billet assembly stage. This significantly improves the thickness ratio accuracy of the final product. By dynamically adjusting the speed ratio, the rolling effect generated by "variable speed rolling" effectively offsets the internal bending moment caused by uncoordinated deformation, significantly reducing the warping and buckling phenomenon of the composite plate.

This application relates to the field of material sealing technology, and particularly to a high-performance insulating ceramic sealing method for neutron tubes. The method includes: sequentially performing organic solvent ultrasonic cleaning and argon plasma etching activation treatment on the sealing surface of a cylindrical high-purity alumina ceramic part, followed by magnetron sputtering deposition of a titanium transition layer to obtain a ceramic part with a titanium transition layer; acid washing to remove the oxide layer from the sealing surface of a Kovar alloy cylindrical flange, followed by cleaning and drying to obtain a metal sealing part; preparing an active brazing filler metal sheet; sequentially assembling the sheet to form a pre-assembled assembly; placing the pre-assembled assembly in a vacuum brazing furnace, applying axial preload to complete the sealing, followed by controlled cooling to form a sealing part with an airtight brazed joint; and annealing to obtain the finished sealing assembly. This method solves the problems of low dielectric strength, large differences in thermal expansion coefficients, and difficulty in controlling interface quality in existing technologies.

This utility model relates to the field of deep foundation pit construction technology, specifically a grouting device for deep foundation pit construction. It includes a base plate, a storage tank mounted on the base plate, a water pipe connected to the bottom of the storage tank, a water pump connected to one side of the water pipe, and a first screw installed within a fixed frame. This utility model, through the cooperation of the base plate, storage tank, water pipe, water pump, inlet, fixed frame, first screw, first drive motor, moving plate, nozzle, fixed frame, second screw, second drive motor, moving block, first electric telescopic rod, and clamping block, allows the grouting device to grout from the bottom of the deep foundation pit, simultaneously and evenly grouting the interior, ensuring effective reinforcement of the deep foundation pit, enhancing the bearing capacity of the foundation, and increasing the cohesion and shear strength of the foundation soil. This helps reduce foundation deformation and settlement, improving the overall stability of the foundation. In deep foundation pit engineering, the stability of the foundation is directly related to the safety and stability of the project.

This invention belongs to the field of oil and gas field development technology and discloses a temperature-pH dual-responsive smart fracturing proppant and its preparation method. The proppant adopts a three-layer core-shell structure, including a high-strength ceramic or quartz sand core, a polyvinyl alcohol crosslinking transition layer reinforced with nano-silica, and a poly(N-isopropylacrylamide-co-acrylic acid) copolymer smart response layer. In the low-temperature proppant carrying stage, the smart response layer hydrates and swells to form a gel layer, giving the proppant excellent suspension performance and friction reduction ability, realizing water fracturing. In the high-temperature reservoir environment, the phase transformation of the temperature-sensitive segment and the protonation of the pH-sensitive segment cause the smart response layer to shrink and detach rapidly, realizing autonomous gel breaking and aiding in fracturing. The nano-reinforced transition layer significantly improves the anti-fracture performance, reducing the fracture rate to 6% to 11% and increasing the long-term conductivity by 35% to 58%.

The application belongs to the technical field of electronic power device packaging interface materials, and specifically discloses a low-temperature sinterable copper-containing conductive paste as well as a preparation method and application thereof.The paste comprises the following components in percentage by weight: copper-containing particles 20-80%; nano silver flake 10-60%; nano silver particles 1-20%; and organic carrier 1-10%.The organic carrier comprises a solvent and a PEG homopolymer.The application uses copper-containing particles as the main conductive filler, combines the nano silver flake and nano silver particles of specific sizes to form a dense sintering network, and uses the reducing atmosphere generated by the pyrolysis of the PEG homopolymer during the sintering process to effectively inhibit copper oxidation, so that low-temperature sintering at 200-280 DEG C can be achieved.The paste preparation method is simple, the sintered paste has high conductivity, high thermal conductivity, high shear strength and good oxidation resistance, and can be used as a chip packaging and connecting material for power semiconductor devices.

This utility model relates to the field of bridge construction technology in water conservancy engineering, and discloses a hollow precast slab for a river sluice gate traffic bridge. It includes an upper slab with a support mechanism fixedly connected internally. Multiple ribs are fixedly connected to the bottom of the upper slab, and an assembly mechanism is fixedly connected to the bottom of each rib. The assembly mechanism includes a lower slab, the top of which is fixedly connected to the bottom of the ribs. Multiple protrusions are fixedly connected to one side of the lower slab, and multiple grooves are formed on the other side. Two sealing strips are fixedly connected to the opposite sides of two ribs. In this utility model, the protrusions and grooves are precisely engaged through a mortise and tenon joint, and then concrete is filled at the joint. The adhesive force of the concrete, combined with the mechanical interlocking force of the mortise and tenon structure, tightly bonds the slab into a whole, improving the shear strength of the joint.

The invention discloses a low-whitening ethyl cyanoacrylate adhesive composition and a preparation method thereof, and relates to the technical field of instant dry adhesives. The low-whitening ethyl cyanoacrylate adhesive composition is prepared from the following components in parts by weight: 80 to 88 parts of alpha-ethyl cyanoacrylate, 1.2 to 4.0 parts of a cyanoacetamide volatile anchoring agent, 5.0 to 12.0 parts of a low vapor pressure cyanoacrylate monomer, 0.055 to 0.38 part of a stabilizer and 2.0 to 7.0 parts of a thickening agent. According to the low-whitening ethyl cyanoacrylate adhesive composition provided by the invention, the whitening phenomenon can be remarkably reduced, and the main monomer is still alpha-ethyl cyanoacrylate, so that the quick positioning, high shear strength and good adhesive property to various substrates of the traditional ECA adhesive are maintained; the comprehensive performance is balanced.

The application discloses a ceramic powder forming machine and method for preparing a ceramic powder with a columnar skeleton structure, and mainly improves the shear strength of a layered ceramic material and solves the problems of multiple processes and low efficiency existing in a method for constructing a layered ceramic structure. In the layered ceramic, a columnar skeleton is constructed, the skeleton can not only prevent the layered structure from cracking, but also share the force and impact received by the layered material, and the shear strength of the layered ceramic material is improved. Meanwhile, a device required for preparing the structure is designed, the device is mainly composed of a workbench and a mold, the skeleton powder is pushed into by cooperation of upper and lower pressing heads, collapse of the matrix powder can be avoided, the integrity of the structure is ensured, the device can be replaced with accessories according to a design scheme, different design structures can be adapted, the preparation process is simple, and the preparation efficiency can be improved.

The application relates to the technical field of bridge expansion joints and discloses a super-high-strength resin elastic concrete for bridge expansion joints, which comprises three components A, B and C, the component A is a main agent, the component B is a curing agent, and the component C is an aggregate; the main agent is a graphene modified epoxy resin; the weight ratio of the component A to the component B is 60-100:30-60; and the total weight of the component A and the component B accounts for 10-15% of the weight of the component C. The super-high-strength resin elastic concrete has high mechanical strength, rut dynamic stability and shear strength with interface concrete, is more durable in use, can absorb impact stress, can be exempted from a steel structure, greatly shortens construction time, has short maintenance time, has no obvious car jumping when a vehicle drives through the expansion joint, has lower noise and is easy to maintain.

The application discloses a SnBiInTe alloy solder suitable for high-density packaging and a preparation method and application thereof, and belongs to the technical field of low-temperature brazing filler metal and preparation thereof. The application solves the problems of low tensile elongation and poor plasticity of the existing Sn-Bi eutectic solder. The application effectively improves the mechanical properties of the solder by adding 2.5% of In element in the Sn-Bi solder, so that the tensile strength of the solder and the shear strength of the joint are improved, and the application range of the Sn-Bi solder in the electronic packaging field is widened. Meanwhile, the mechanical properties of the solder are effectively improved by adding 1%-3% of Te element in the solder through the solid solution strengthening and second phase strengthening mechanism, and the reliability of the welded joint is greatly improved.

The utility model discloses a high -strength anti -deformation laminated board relates to laminated board technical field, including resin base layer, the outside of resin base layer is provided with the carbon fiber reinforced layer that can promote the rigidity of laminated board strength, and is provided with interlayer reinforcing structure between carbon fiber reinforced layer and resin base layer, and the enhancement of laminated board is realized to the anti -fracture of preventing through interlayer reinforcing structure, and resin base layer and carbon fiber reinforced layer each are provided with two groups. The high -strength anti -deformation laminated board, when the preliminary pressing of multiple resin base layers and carbon fiber reinforced layer between is completed, can butt joint to butt joint and place the groove position of fixed plate to carry out the pressing treatment to the carbon fiber needle of Z -pinning technique, and the carbon fiber needle is inserted to the butt joint hole, and the resin base layer, carbon fiber reinforced layer between is further fixed, through the carbon fiber needle in the shear strength between reinforcing layers, the weight of carbon fiber needle is small, and the defect of weight increase when using metal needle to fix is made up.

This invention discloses an energy-saving grinding component for a sand mill, comprising an equipment housing containing a cooling tank, a grinding chamber located above the equipment housing, a spiral cooling cavity within the grinding chamber, a feeding pipe and a discharge pipe on the grinding chamber, and a cover fixedly mounted on the top of the equipment housing on one side of the grinding chamber. This invention improves the contact shearing efficiency between the grinding chamber and the material and grinding media beads through the coordinated operation of a cam, hollow shaft, grinding drum, and pin, achieving material grinding. Heat exchange is achieved between the cooling water in the spiral cooling cavity and the grinding chamber, enabling temperature control while recycling water resources. It also allows the warm water after heat exchange to quickly and thoroughly mix with the low-temperature cooling water and cooling elements, agitating the water to break up temperature stratification, ensuring the low-temperature stability of the return cooling water, and continuously guaranteeing the cooling effect. The entire process is driven by a single power source, balancing cooling efficiency and energy saving.

This invention provides a fixing device for rocket engine nozzles, including a ring frame. Several connecting arms are evenly distributed around the center of the ring frame at its lower end. A support arm is provided at the upper end of the ring frame corresponding to each connecting arm. Each connecting arm includes an integrally formed docking portion and a connecting portion. The docking portion is vertically arranged, and the connecting portion extends outward from the ring frame, with a connecting corner piece installed at its free end. The docking portion is fixed to the ring frame by a connecting assembly. The support arm includes a fixing frame, with an arc-shaped support plate at one end extending outward from the ring frame. The support plate is inclined, gradually tilting towards the center of the ring frame from bottom to top, and has a heat insulation structure on its outer side. The ring frame includes a paper honeycomb core material, with a carbon fiber composite panel covering the outer wall of the paper honeycomb core material. This invention effectively achieves lightweight and high specific stiffness, integrating structural load-bearing and thermal protection, avoiding the weight increase caused by external heat insulation devices.

The application discloses a kind of based on aeolian genesis silt's anti-seepage material and preparation method thereof, belong to the field of water conservancy and hydropower engineering.It mainly includes the following weight parts of raw materials: aeolian genesis silt 48~54, gneiss aggregate 40~45 and modified bentonite 6~10.The anti-seepage material based on aeolian genesis silt of the embodiment of the application, gneiss aggregate, as the gravel component of anti-seepage material, is the support skeleton of anti-seepage material, and the particle strength is high, to increase the shear strength and deformation modulus, reduce shrinkage;Using modified bentonite, modified bentonite has stronger adsorption performance and bonding capacity, thereby improving the anti-seepage performance of anti-seepage material.The anti-seepage material based on aeolian genesis silt of the application has excellent anti-seepage effect and high mechanical strength.

The open-pit mine slope protection structure and method, which integrates drainage and micropile systems, includes a drainage system and a micropile system that work together. The drainage system comprises a drainage ditch at the bottom of a stepped slope, drainage holes and water pipes on the slope. The water pipes within the drainage holes have filter holes and are covered with a filter screen. A flexible water pipe connects the water pipe to the drainage ditch. The micropile system includes multiple cast-in-place piles embedded in the slope's soil and rock, and a pile top connection frame that connects the tops of the piles. The method for constructing the slope protection structure is divided into two stages and steps: a first stage of three steps for constructing the drainage system, and a second stage of three steps for constructing the micropile system. This method has the advantages of solving the problem of limited slope reinforcement due to the independent and poor coordination of drainage and retaining measures, while also significantly reducing costs.

A method for preparing and applying a carbon fiber phthalocyanine sizing agent is disclosed. The method involves synthesizing a liquid phthalocyanine monomer containing siloxane segments through hydrosilylation and nucleophilic addition reactions, and then formulating it into a dilute solution-type sizing agent. Compared with existing technologies, this invention overcomes the limitation of traditional sizing agents relying primarily on physical compatibility with the resin matrix. Through an integrated "structure-function" design, the sizing agent simultaneously performs the dual functions of interface modification and resin co-curing. This sizing agent can form an active interface layer on the carbon fiber surface, co-curing with the phthalocyanine resin to form a chemically bonded network, increasing the interlaminar shear strength of the composite material by more than 30% and achieving a temperature resistance of up to 400℃, making it suitable for manufacturing high-temperature components for aerospace applications. The presence of a multidimensional conductive network on the carbon fiber surface endows the composite carbon fiber material with excellent electromagnetic shielding properties, and also improves the strength, toughness, and wear resistance of the carbon fiber.

The application discloses an electrode rod welding structure and a manufacturing method, and belongs to the technical field of welding structure of electrode rod. The electrode rod welding structure comprises a ceramic electrode base, an electrode assembly and a threaded sleeve. The ceramic electrode base is provided with a threaded hole, and the bottom of the threaded hole is provided with a first assembly part. One end of the electrode assembly is provided with a second assembly part. The electrode assembly is installed in the threaded hole, and the second assembly part is installed in cooperation with the first assembly part. The outer circumferential side of the electrode assembly is formed with a first step part and a welding wire groove. The first step part is located between the second assembly part and the welding wire groove. The welding wire groove is used for placing a welding wire. The threaded sleeve is in a hollow structure. The inner side wall of the threaded sleeve is formed with a second step part matched with the first step part. The threaded sleeve is sleeved on the outer circumferential side of the electrode assembly, and the threaded sleeve is threadedly connected with the threaded hole, so that the electrode assembly is locked in the threaded hole. The application reduces the risk of cracking of the ceramic electrode base, has good sealing air tightness, and is not easy to be de-welded.

This application provides a nuclear-grade zirconium-hafnium dissimilar metal and a spark plasma pressure sintering bonding method. The spark plasma pressure sintering bonding method can complete the sintering process in a shorter time, significantly improving production efficiency. Furthermore, this invention is prepared by spark plasma pressure sintering of a hafnium metal block, an intermediate layer premixed powder, and a zirconium metal block. It allows for precise adjustment of the raw material ratio of the intermediate layer premixed powder and precise control of the sintering process, thereby preparing a zirconium-hafnium dissimilar metal with a specific composition and microstructure. This results in a zirconium-hafnium dissimilar metal with high bonding strength, while retaining the intrinsic properties of both zirconium and hafnium metals. The combination of these two properties enables optimized control of the nuclear reaction process.

The application discloses a polyurethane adhesive based on a mussel-biomimetic glue, which comprises A component and B component in a mass ratio of 1: (0.9-1.1), wherein the A component is a polyurethane prepolymer containing o-dihydroxybenzene, and the B component is a polyhydric alcohol containing metal ions; in use, the A component and the B component are mixed and coated on a substrate, and then are left to solidify. The application realizes room-temperature rapid solidification without special solidification conditions, and the adhesive layer after solidification still maintains excellent shear strength and bonding durability in a high-humidity environment, and the adaptability in a humid environment is significantly improved.

The utility model discloses a kind of stability of receiving plug, a kind of stability of receiving plug, receiving plug includes the insertion of each other and the mouth of pipe;The one end of insertion is provided with the first pipe connecting portion for being connected with pipeline, the other end is provided with insertion part, insertion part is provided with pressure test groove, the one end of mouth of pipe is provided with the second pipe connecting portion for being connected with pipeline, the other end is provided with receiving part;Two pressure test holes are equipped in the lateral wall of receiving part, and the inner surface of receiving part is provided with corrugated channel;Several invaginated reinforcing grooves are arranged in pressure test groove;Wherein, the position of corrugated channel after insertion corresponds with pressure test groove, and form continuous closed cavity, and pressure test hole is communicated with cavity for glue injection and stable receiving plug.The utility model is through channel cooperation and glue injection solidification, significantly improve the anti-falling property, sealing property and long-term stability of pipeline connection, with higher engineering practical value.