1806results about "Pipe connection arrangements" patented technology

A fiber reinforced laminate pipe joint can include a first pipe, a second pipe, where the first pipe and the second pipe can be fiber reinforced laminate pipes, and a pipe joint insert. The pipe joint insert can be partially inserted inside the first pipe and can be partially inserted inside the second pipe. The pipe joint insert can be bonded to the first pipe and the second pipe, where the pipe joint insert can include a fiber reinforced laminate, where a bonding agent in the fiber reinforced laminate of the pipe joint insert can be distinct from a bonding agent used to bond the pipe joint insert to the first pipe.

Disclosed are chromatography systems employing a releasable coupling 100 for holding a fluid tubing to a spigot, the coupling comprising: a cylindrical inner component 110 for accepting a fluid tubing 30, said inner component including a resiliently deflectable portion 118 arranged to urge an outer surface of the tubing toward a spigot; and a cylindrical collar 130 having and internal through-aperture 132 for slideably accepting the inner component, the aperture and resilient portion having complementary surface formations which in a first position of the collar mounted to the inner component provide for said resilient deflection in use, and which in a second different position do not cause said deflection, the coupling being characterized in that the collar comprises a collar flange 134 extending outwardly away from the aperture of a size allowing manual manipulation of the collar between the first and second positions. Chromatography systems employing said couplings is disclosed also.

The invention relates to the technical field of pipe fitting connection, in particular to a plastic pipe fitting connecting structure which comprises a connecting mechanism used for connecting a first pipe fitting and a second pipe fitting, and annular threaded sections are arranged on the outer side of the first pipe fitting and the outer side of the second pipe fitting. According to the connecting mechanism, the threaded ring is in threaded connection with the pipe fitting; the locking piece is adopted for achieving mutual locking matching between the connecting piece and the fixing piece, the connecting reliability of the connecting piece and the fixing piece is improved, the pressing piece and the locking piece are matched to extrude the sealing gasket, the better sealing effect is achieved, the fixing piece is precisely limited through the limiting piece, and the sealing effect is improved. Meanwhile, the connecting stability of the two sets of connecting pieces is improved through mutual locking between the two semicircular hoop plates of the auxiliary piece, the overall stability of the connecting mechanism is synchronously improved, and the two pipe fittings are firmly and tightly connected together step by step under multi-stage mutual matching of the connecting pieces, the locking pieces, the fixing pieces, the locking pieces, the pressing pieces, the limiting pieces and the auxiliary piece.

The invention relates to the technical field of bamboo winding composite material pipelines, and discloses a bionic bamboo joint connector of a bamboo winding pressure pipeline and a processing technology of the bionic bamboo joint connector, the bionic bamboo joint connector is arranged at the connecting part of two sections of axially aligned bamboo winding pipelines, and the bionic bamboo joint connector sequentially comprises an inner lining layer and an outer lining layer from inside to outside, the embedded steel bar reinforcing layer consists of a reinforcing material and embedded steel bar glue; the film covering restraint layer is composed of fiber reinforced cloth and impregnating resin; the socket fastening layer is composed of a metal fastening piece which is connected with the two pipes in a bridging mode. A protective layer is poured, and the whole connector is wrapped with polymer modified cement mortar; the invention further provides a processing technology of the bionic bamboo joint connector. The processing technology comprises the following six steps of pretreatment, lining welding, embedded steel bar reinforcement, film covering constraint, socket fastening and pouring protection. Through the composite structure of crossed truss type embedded steel bars, polymer modified mortar pouring and socket fastening, the connector obtains high connection strength, excellent anti-drawing performance and long-term durability.

The utility model relates to the technical field of plastic valves, in particular to a pipeline connecting structure. Comprising a valve body connecting pipe part, a connecting pipe and a ball-in nut, thread pairs matched with each other are arranged between the valve body connecting pipe part and the ball-in nut so that the ball-in nut can be screwed on the valve body connecting pipe part, the ball-in nut is used for making the valve body connecting pipe part abut against the contact face of the connecting pipe, a ball-in is assembled on the inner side of the connecting pipe, and the ball-in nut can be screwed on the ball-in nut. One side of the inlet ball abuts against the outer circumferential face of the valve body pipe connecting part to form a first sealing structure, the other side of the inlet ball is tightly matched with the inner side face of the connecting pipe to form a second sealing structure, the pipeline connecting structure further comprises an anti-rotation sleeve, and the anti-rotation sleeve is used for locking the valve body pipe connecting part and the inlet ball nut. The utility model provides a pipeline connecting structure which prevents fluid leakage and ensures reliability and safety in the using process.

The utility model belongs to the technical field of municipal pipeline maintenance and relates to a municipal pipeline maintenance device which comprises a first connecting pipe and a second connecting pipe, the outer side wall of the right end of the first connecting pipe is in threaded connection with an adapting pipe, and an inserting pipe is fixedly arranged on the right side wall of the adapting pipe. An annular inserting groove matched with the inserting pipe in an inserted mode is formed in the left side wall of the second connecting pipe, and a first sealing ring is arranged in the annular inserting groove. When the maintenance device is used, the left end of a first connecting pipe and the right end of a new HDPE pipe can be subjected to hot melting welding, the left end of the new HDPE pipe and a cutting opening of a left pipeline are subjected to hot melting welding, the right end of a second connecting pipe and a cutting opening of a right pipeline are subjected to hot melting welding, and an adapting pipe is connected between the right end of the first connecting pipe and the left end of the second connecting pipe; when the new HDPE pipe and the left pipeline are subjected to hot-melt welding and the second connecting pipe and the right pipeline are subjected to hot-melt welding, the new HDPE pipe and the second connecting pipe can be moved in the axial direction, hot-melt butt joint extrusion force at a left pipeline cutting opening and a right pipeline cutting opening can be ensured, and the structural strength of the hot-melt welding position can be ensured.

The utility model discloses a quick mounting structure for a plastic pipe. The quick mounting structure comprises a first pipe body and a second pipe body, a connecting assembly is arranged between the first pipe body and the second pipe body and comprises a connecting sleeve fixedly connected with the end of the first pipe body, and the connecting assembly further comprises a butt joint sleeve fixedly connected with the end of the second pipe body. Wherein discs are fixedly connected to the interior of the connecting sleeve and the side, close to the connecting sleeve, of the butt joint sleeve, and barbs and trapezoidal strips are symmetrically and fixedly connected to the exteriors of the discs; limiting assemblies are symmetrically arranged on the outer portion of the butt joint sleeve. The barb penetrates through the neutral position and slides along the inclined faces of the trapezoidal strips, the barb can pull the two trapezoidal strips on the different sides to get close, then the two discs drive the sealing rings to get close and extrude, the two plastic pipes are in rapid butt joint, the sealing rings extruded mutually can prevent fluid from seeping out, and the sealing performance of the device is ensured.

A fitting nut made of a resin material includes: a hollow, large-diameter tube portion having a female thread formed on its inner peripheral wall; and a small-diameter tube portion that is continuous to the large-diameter tube portion and having a hollow cylindrical shape with a smaller diameter than the large-diameter tube portion. The small-diameter tube portion includes, in the outer peripheral wall thereof, a plurality of engagement grooves that are depressed inwardly in the diameter direction of the small-diameter tube portion and extend along the longitudinal direction that is orthogonal to the diameter direction.

The utility model relates to a vehicle hydrogen storage bottle opening sealing structure, which comprises a plastic inner container, a bottle valve seat, a joint and a locking nut, the bottle valve seat is positioned at the bottle opening of the plastic inner container, the joint is tightly connected in the bottle opening of the plastic inner container through a sealing structure, and the sealing structure and the plastic inner container are sealed by pressing the joint downwards through the locking nut and extruding the sealing structure. The metal connector, the sealing ring and the bottle opening of the plastic inner container are extruded to achieve sealing, the plastic inner container adopts the injection molding technology, the cylinder valve seat serves as an embedded part, the shoulder of the cylinder valve seat is wrapped in the plastic inner container, the binding force of the cylinder valve seat and the plastic inner container in the long-term working process of the gas cylinder is guaranteed, separation is avoided, and the service life of the gas cylinder is prolonged. The cylinder valve seat, the connector and the locking nut are simple in structure and easy to machine, the cylinder valve seat is fixed through the fixing tool, sealing can be achieved by screwing the locking nut through a tool wrench, and installation is convenient.

A grip ring includes a substantially frustoconical metal ring body defining a diameter that tapers from a first lateral end of the ring body to a second lateral end of the ring body opposite the first lateral end, the ring body further defining a first circumferential end, a second circumferential end opposite the first circumferential end, an inner surface defining a guide ring opening, and an outer surface opposite the inner surface; and a gap defined between the first circumferential end and the second circumferential end; wherein the ring body is configured to be compressed radially inward to reduce a width of the gap between the first circumferential end and the second circumferential end.

The utility model discloses a novel elbow joint, which belongs to the technical field of pipeline connecting structures and comprises an elbow body, one end of the elbow body is provided with a first connector, the other end of the elbow body is provided with a second connector, the second connector is connected with a hard pipe through a connecting piece, and the side wall of the second connector is circumferentially provided with an arc-shaped hole for the connecting piece to penetrate through. The first connector and the bent pipe body are of an integrated structure, and the second connector and the bent pipe body are connected through a detachable connecting structure. One end of the bent pipe body is connected with a hose through a first connector, the other end of the bent pipe body is connected with a hard pipe through a second connector, and the second connector and the hard pipe are fixed together through a connecting piece; the first connector and the elbow body are of an integrated structure, so that a hose can be conveniently and directly sleeved; the second connector is connected with the elbow body through a detachable connecting structure, so that the elbow is convenient and quick to mount and dismount, and is particularly suitable for operation in narrow space. The device is simple and compact in structure and convenient and fast to operate, and the convenience of installation is improved.

The utility model provides a steel-plastic conversion pipe fitting joint assembly, which relates to the technical field of pipe connecting structures, and comprises a connecting seat, a clamping and pressing mechanism is arranged outside the connecting seat, the clamping and pressing mechanism comprises four semi-circular blocks, one side surfaces, close to each other, of the two semi-circular blocks are respectively contacted with the upper surface and the bottom surface of the connecting seat, and the other side surfaces of the two semi-circular blocks are respectively contacted with the connecting seat. A rotating rod is rotationally connected into the connecting base, two sets of threaded grooves are formed in the outer surface of the rotating rod, the thread directions of the two sets of threaded grooves are opposite, two moving bases are slidably connected into the connecting base, and each moving base is in threaded connection with the rotating rod through the corresponding threaded groove. The side faces, close to each other, of the two semicircular blocks are fixedly connected with the upper surfaces and the bottom faces of the two movable bases correspondingly. And the two pipes are connected in a clamping and pressing mode, so that the connecting and detaching difficulty between the pipes is effectively reduced, and the use convenience of the pipe connecting mechanism is improved.

An irrigation fitting comprises a first fitting branch and a second fitting branch. The first fitting branch comprises a first planar region and a second planar region. The second fitting branch comprises a third planar region and a fourth planar region. The first planar region and the third planar region jointly comprise a first curved concave edge and a second curved concave edge. The second planar region and the fourth planar region jointly comprise a third curved concave edge and a fourth curved concave edge.

The utility model relates to an RTP pipe joint sealing structure for high-pressure gas gathering and transportation. The RTP pipe joint sealing structure comprises a joint core pipe, a sleeve and a pipe body. One end of the joint core pipe is provided with a sealed end, and the other end of the joint core pipe is connected by being embedded in the pipe body; external threads are arranged on the outer ring of the joint core tube; one end of the sleeve is provided with internal threads; the joint core pipe is in threaded connection with the internal thread through the external thread; the other end of the sleeve is nested outside the pipe body; an annular sealing groove is further formed in the outer wall of the connector core pipe. An O-shaped rubber sealing ring and a plastic check ring are mounted in the annular sealing groove; the cross section of the annular sealing groove is square or trapezoid, and the cross section of the plastic check ring is also arranged to be of a square or trapezoid or polygonal structure corresponding to the cross section of the annular sealing groove. According to the utility model, the assembly size is more accurately controlled, so that the assembly connection gap between the pipe and the joint is tighter, and the sealing effectiveness is fully ensured.

The present invention relates to a flexible joint of a large-diameter and high-pressure fiber-reinforced flexible composite pipe, belonging to the field of fiber-reinforced thermoplastic pipes. The technical solution is as follows: The reinforcement layer is formed by helically winding fiber tapes, and the reinforcement layer has at least two layers of structure, and the helical winding directions of the fiber tapes in adjacent layers are opposite; the filling layer is arranged between adjacent layers of the reinforcement layer, and the filling layer is composed of an elastic material that can be extruded and deformed; the fiber tapes extend a certain distance beyond the end of the inner lining layer. The present invention provides thicker fiber tapes, reduces the number of times of fiber tape winding, is beneficial to the processing of fiber-reinforced flexible composite pipes, and facilitates the flexible connection of pipes; it can avoid the problem of stress concentration in the reinforcement layer caused by metal joints, and at the same time solves the problem of insufficient strength of welded joints. The technical solution of the present invention can meet the needs of oil and gas pipeline transportation and other application scenarios.

To provide a resin joint capable of exhibiting an optimal fire spread prevention effect (attaining an intended fire resistant structure) even in a thin slab.SOLUTION: A resin joint 100 includes: a resin upper member 140 that has one or more branch pipes and projects to the upper side of a thin slab; a resin lower member 110 that is connected to the lower side of the upper member 140 and in which an upper part is embedded in the thin slab and a lower part projects to the lower side of the thin slab when the resin joint 100 is constructed on the thin slab; and a thermal expansion material. In the thermal expansion material, an upper thermal expansion material 711 and a lower thermal expansion material 712 are provided to vertically separate from each other on upper and lower two portions of an outer surface of the resin joint 100. The lower member 110 has a diameter contraction part 118 on the lower side, and the upper thermal expansion material 711 and the lower thermal expansion material 712 are provided on the upper side of the diameter contraction part 118. At least one of the upper thermal expansion material 711 and the lower thermal expansion material 712 is located at a position of the thin slab in an expandable manner.SELECTED DRAWING: Figure 3

The invention provides an anti-impact modified high-density polyethylene anti-leakage pipeline connecting device, and relates to the technical field of pipeline connecting devices.The anti-impact modified high-density polyethylene anti-leakage pipeline connecting device comprises a connecting sleeve, the two side ends of the connecting sleeve are each provided with a positioning mechanism, and the positioning mechanisms are used for covering the ends of a polyethylene pipeline; according to the pipeline connecting sleeve, the end of the pipeline is prevented from being damaged due to collision and friction in the connecting process, meanwhile, the fitting precision of the sealing face and the outer wall of the pipeline is guaranteed, the pipeline is preliminarily guided by means of the matching relation between the clamping jaws and the groove bodies, and the coaxiality of the pipeline and the connecting sleeve is adjusted in real time; when the pipeline continues to be inserted into the second-stage positioning groove, the round-head clamping jaw is connected with the groove body in a clamped mode under the elastic effect of the metal elastic piece, at the moment, the second-stage positioning groove can effectively buffer the insertion impact force borne by the clamping jaw, the stress load of the metal elastic piece is dispersed, and the sealing effect of the pipeline is improved. And the elastic sheet is prevented from overload deformation and loss of elastic reset capability due to overexertion in one-time insertion.

The utility model discloses a silicon nitride ceramic lining elbow which comprises an elbow body, a silicon nitride ceramic inner pipe is fixedly embedded in the inner wall of the elbow body, two blocking rings are fixedly connected to the inner wall of the elbow body, and the two ends of the silicon nitride ceramic inner pipe are fixedly connected with the side faces, close to the silicon nitride ceramic inner pipe, of the two blocking rings respectively. Three annular limiting grooves are formed in the inner wall of the bent pipe body, and the inner wall of each annular limiting groove is fixedly connected with a positioning ring. According to the device, through the arrangement of the bent pipe body, the silicon nitride ceramic inner pipe, the annular limiting groove, the positioning ring and the plugging ring, the silicon nitride ceramic inner pipe can be effectively fixed and limited, the silicon nitride ceramic inner pipe is more stably installed in the bent pipe body, stable use of the elbow is facilitated, and through the cooperation of the arranged material guiding slope plate and the plugging ring, the material guiding slope plate is more stable. And the end of the silicon nitride ceramic inner pipe can be protected, the impact force borne by the silicon nitride ceramic inner pipe is reduced, and the elbow can be stably used for a long time.

The utility model discloses a reducing pipe joint, relates to the technical field of pipeline fittings, and aims to solve the problems that in the prior art, a small-caliber part of an existing reducing pipe joint is thick in pipe wall, more materials are consumed, raw materials are wasted during mass production, and the reducing pipe joint is not environment-friendly enough to use. A small-caliber connector and a large-caliber connector are arranged in the connector body, a material-saving groove is formed in the position of the small-caliber connector, an inner wall is arranged between the material-saving groove and the small-caliber connector, reinforcing ribs are arranged in the material-saving groove, a dredging through opening is formed in the connector body, and a right-angle connector is arranged on the outer side of the connector body. The right-angle connector and the connector body are of an integrated structure, a fastening reinforcing groove is formed in the connecting metal head, a penetrating hole is formed in one side of the fastening reinforcing groove, a connecting reinforcing groove and a sealing groove are formed in the connecting metal head, and the connecting reinforcing groove and the sealing groove are connected with the right-angle connector in an embedded mode.

A tubing junction assembly may include a body, and a collar coupled to the body. The body may include a head portion, a base portion, and an intermediate portion. At least a portion of an outer surface of the body at the intermediate portion may define a cross-sectional width that tapers from the head portion to the base portion. The collar may have an inner surface defining a passage. A tubing may be stretched over the outer surface of the body with a proximal end portion of the tubing stretched over at least a portion of the outer surface of the body at the intermediate portion. The inner surface of the collar may be sleeved over a portion of the outer surface of the tubing and coupled to the collar such that the proximal end portion of the tubing is sandwiched and compressed between the body and the collar.

Adaptor devices, installation guide devices, and methods provide a fluid connection into a conduit section interior of a conduit section of a conduit through a sidewall thickness of a conduit section sidewall of the conduit section. A method includes coupling an installation guide device to the conduit, operating a drill bit device while the installation guide device is coupled to the conduit to cause the drill bit device to move longitudinally to a protrusion distance that is equal to or less than a particular protrusion distance defined by a protrusion stop structure to drill through the sidewall thickness of the conduit to form an access point opening through the sidewall thickness of the conduit into a conduit interior of the conduit, and coupling an adaptor device to the conduit section at the exposed access point opening, to establish fluid communication into the conduit section interior through the adaptor device.

An end fitting for connecting two sections of pipe to one another can comprise a first tubular member, and a second tubular member disposed coaxially about the first tubular member to delimit an annular gap therebetween for receiving an end portion of a pipe. A sleeve can be disposed coaxially about the first tubular member and within the annular gap such that a pressurised medium is receivable between the sleeve and one of first and second tubular members to move at least a portion of the sleeve radially and thereby clamp the end portion of the pipe between the first and second tubular members when received in the annular gap. The end fitting may have particular application in conveying oil and gas field fluids, including hydrocarbon fluids.

The invention relates to the technical field of pipe fittings, in particular to a polypropylene HFB corrugated pipe with a locking connector structure, which comprises two polypropylene HFB corrugated pipe bodies, the two polypropylene HFB corrugated pipe bodies are spliced end to end, the splicing position of the two polypropylene HFB corrugated pipe bodies is sleeved with a pipe connecting sleeve, a reserved groove is formed in the outer ring surface of the pipe connecting sleeve, and the locking connector structure is arranged in the reserved groove. Two groups of locking joints are inserted into the preformed groove; the polypropylene HFB corrugated pipe has the beneficial effects that connection is achieved through matching of the pipe connecting sleeve and the locking connector, the pipe connecting sleeve and the polypropylene HFB corrugated pipe body are tightly combined together, the gap between the locking connector and the positioning groove is filled with the rubber band, the locking connector is further prevented from swinging at will, the connection stability is effectively enhanced, and large external force can be borne; risks of connection loosening and falling caused by external force or environmental factors are reduced, and safe and stable operation of a pipeline system is guaranteed.

A tubing retention device for retaining a T-shaped tubing assembly includes a base member having a first tubing recess, a second tubing recess oriented perpendicular to the first tubing recess, and first and second relief shelves disposed at opposite ends of the first tubing recess and recessed relative to the bottom surface of the first tubing recess. A movable locking element is configured to move between an unlocked first position and a locked second position and is configured to lock a T-shaped tubing assembly in the tubing retention device in the locked second position. A fluid pump includes a housing and such a tubing retention device mounted to the housing. A T-shaped tubing assembly may be secured within a such a retention device by positioning the T-shaped tubing assembly in the first and second tubing recesses, and moving the locking element from the unlocked first position to the locked second position.

A pipe fitting (100) includes a tubular connecting part (101); the tubular connecting part being configured to be inserted into an expanded pipe end section (111) of a pipe (110) having a first circumferential intact sealing region (113) on the inner surface (112) of the pipe end section (111); the tubular connecting part comprising a first radially outwards extending circumferential sealing barb (105′) positioned for engaging, when in use, with the first circumferential intact sealing region during shrinkage of the pipe end section for forming a sealing between the pipe fitting and the pipe.

Devices for coupling to a first and second conduit and methods of manufacturing the same. The device may include a first member defining a channel having a first opening and second opening, and one or more threads located on an inner surface of the channel at the second opening, the first member configured to receive the first conduit at the first opening and the second conduit at the second opening, and the one or more threads engages one or more threads of the second conduit. The device may include a second member circumferentially disposed around a periphery of the first member and axially extending therefrom, the second member including an inner diameter configured based on an outer diameter of the second conduit to enable the second member to form a seal around the second conduit when the second conduit fully engages the first member.

The present invention provides a molded article of a vinyl chloride-based resin composition excellent in mechanical properties such as tensile elongation at break while containing two or more kinds of calcium carbonate materials having different characteristics as a filler. The molded article of a vinyl chloride-based resin composition according to the present invention is obtained by blending a vinyl chloride-based resin and a filler. The filler includes a first calcium carbonate material and a second calcium carbonate material having different aspect ratios. The first calcium carbonate material is preferably a pulverized product of scallop shells.

The invention relates to a pipe connection for the end-face connection of pipe elements and to methods for the production thereof. The pipe connection comprises a first pipe element (1) made of a metal material, a second pipe element (2) made of a ceramic material, a sleeve (3) which is made of a metal material, is connected to the first pipe element (1) completely in the circumferential direction and spans the outer lateral surface of the second pipe element (2) completely in the circumferential direction and at least partially in the longitudinal direction, and a reinforcing layer (4) arranged on the outer lateral surface of the sleeve (3), wherein the reinforcing layer (4) is manufactured from a ceramic fibre composite material and is connected both to the outer lateral surface of the first pipe element (1) and to the outer lateral surface of the second pipe element (2).

The utility model relates to a high-density polyethylene (HDPE) plastic steel winding pipe convenient to connect, which aims at solving the technical problems that the connection of the current plastic steel winding pipe needs to consume a large amount of time and energy, and pseudo soldering is easy to occur, and comprises a first pipe body, a second pipe body and a connecting ring, the outer side of the first pipe body is sleeved with a first limiting ring, and the outer side of the second pipe body is sleeved with a second limiting ring. A first limiting ring sleeves the outer side of the first pipe body, a second limiting ring sleeves the outer side of the second pipe body, threaded clamping grooves are formed in the inner sides of the first limiting ring and the second limiting ring, first bolts penetrate through the two sides of one end of the first limiting ring, and first nuts sleeve the outer sides of the two first bolts in a threaded mode; second bolts penetrate through the two sides of one end of the second limiting ring, second nuts are arranged on the outer sides of the two second bolts in a threaded and sleeved mode, the first pipe body and the second pipe body are pulled to move in the opposite directions to be in mutual extrusion butt joint in the connecting ring, and then the connecting efficiency of the HDPE plastic steel winding pipe is improved.