1629results about "Joints with sealing surfaces" patented technology

A hose assembly for use with a tankless water heater. The hose assembly includes a flexible hose, a first connector assembly, and a second connector assembly. The first connector assembly is fluidly coupled with the flexible hose and includes a first fitting. The first fitting is rotatably coupled with the first connector assembly such that the first fitting is independently rotatable relative to the flexible hose. The second connector assembly is fluidly coupled with the flexible hose opposite to the first connector assembly.

A pipe connector for use in high temperature environments, such as those characteristics of molten salt reactors. The pipe connector can be used in any industry that uses pipe connectors, and in particular, can be used in a molten salt system including a reactor requiring a connection rated for a maximum of about 725° C. and about 15,000 psi. The pipe connector may comprise a pin, a seal ring, a retainer ring, a box, a locking nut, and a retaining nut.

The invention relates to the technical field of pipeline movable joint manufacturing, and discloses a movable joint which comprises a first joint, a second joint, a third joint and a fourth joint. A spherical surface is arranged at the end of the second joint, and the spherical surface is used for being matched with the conical sealing surface to form sealing; the locking nut is used for connecting the first connector and the second connector, an internal thread is formed in the inner side wall of the locking nut, and the internal thread is matched with the external thread; the sealing ring is mounted between the first joint and the second joint; through the structural design of the first joint and the second joint, a formed sealing structure is provided with at least two sealing structures after being matched with a sealing ring, the sealing performance of the movable joint can be effectively improved, and even if the first two layers of sealing structures fail, the connection mode of the locking nut can also prevent the movable joint from generating overlarge leakage rate, so that the sealing performance of the movable joint is improved. The movable joint is particularly suitable for high-temperature medium pipelines, and the safety performance of the movable joint is effectively improved.

To provide a pipe joint that has strong pipe withdrawal resistance, is excellent in durability, and has a home base-shape recessed groove.SOLUTION: A home base-shape recessed groove 9 formed in a compressive deformable sleeve 7 has a large straddle angle θ, where a deep part tip 9A has a round shape with a specified large radius R1.SELECTED DRAWING: Figure 5

In order to make it possible to ensure the axis alignment performance while reducing the processing cost, and to make a coupling structure compact to perform the coupling work and the detaching work of pipe members without difficulty even in a narrow work space, the coupling structure according to the invention includes a pipe coupling that couples a pair of pipe members each including a flange at an end portion in a state where the flanges of the pipe members face each other, an annular gasket interposed between the flanges of the pair of pipe members, and recesses formed individually in facing surfaces of the flanges facing each other, in which the annular gasket fitted into the respective recesses makes pipe axes of the pipe members and the annular gasket coincide with each other.

A pipe coupling has two segments with lugs adapted to receive adjustable fasteners to draw the segments together to join pipe elements. Each lug has an inner surface and a stop surface in spaced relationship. The stop surfaces on corresponding lugs contact each other when the adjustable fasteners are tightened.

A rotation sleeve grip structure for garden hoses or other tubings is provided. A hose assembly can include a hose tubing and a rotation sleeve installed over an outer surface of the hose tubing, where the rotation sleeve is constrained between first and second open ends of the hose tubing and comprises a hollow cylindrical shell configured to enclose a portion of the hose tubing along a longitudinal length. The rotation sleeve is rotatable through 360 degrees about a circumference of the outer surface of the hose tubing. An inner sleeve can be affixed to the outer surface of the hose tubing, and may be disposed between the hose tubing and the rotation sleeve. One or more circumferential rib protrusions and corresponding circumferential channels for receiving the rib protrusions can be provided between the inner sleeve and the rotation sleeve.

A valve connector includes a body having a first end adapted to attach to an American valve, a second end opposite the first end, and a through hole extending through both ends. A shoulder portion divides the through hole into a first accommodating portion and a second accommodating portion, with a sealing ring disposed on the second accommodating portion. A control member is movably disposed in relation to the body between a first and second position. The control member includes a body portion, a guiding hole, an abutting end, and a control end adapted to communicate with an air pump device. A venting portion is arranged between the abutting end and the control end, having a first cross-sectional area smaller than a second cross-sectional area.

A conduit coupling assembly for joining together two metal conduits includes a first fitting having a first end opposite a second end, wherein the first end is threadably attached to the conduit, and a first washer attached to the second end of the first fitting, wherein the first washer is non-metallic. The coupling may further include a second fitting in abutment with the first washer, a nut surrounding the first fitting and the second fitting, and a second washer disposed between the nut and the second fitting, wherein the second washer is non-metallic.

The present invention eliminates a dead space between a gasket and flanges and the present invention is an annular gasket 30 attached between planar seal surfaces 12x of opposing flange portions 12, in which steps 30d are formed between radially inner surfaces 30b continuous with an inner peripheral surface 30a and radially outer surfaces 30c, each radially inner surface 30b is located axially outward the corresponding radially outer surface 30c, the radially inner surface 30b and the radially outer surface 30c each have a planar shape orthogonal to an axial direction, and each radially outer surface 30c comes into contact with the corresponding seal surface 12x after each radially inner surface 30b comes into contact with the corresponding seal surface 12x.

The utility model discloses a solenoid valve joint butt joint fixing device, which belongs to the technical field of valve joint butt joint fixing devices, and comprises a solenoid valve main body, the pipe end of the solenoid valve main body is connected with a connecting plug, the connecting plug comprises an inserting pipe, an anti-torsion ring and a socket, the connecting plug comprises a lining pipe and an outer sleeve, and the locking cover is sleeved outside the connecting plug and can be in threaded connection with the outer sleeve. A butt joint groove is formed in the anti-torsion ring, and the outer sleeve is provided with a plurality of butt joint protruding blocks. According to the technical key points, during installation, only the insertion pipe needs to be inserted into the lining pipe and the outer sleeve, then the locking cover is tightened, the locking cover is in threaded connection with the outer sleeve, the insertion pipe can be effectively prevented from being disengaged from the insertion groove, in the process, when the insertion pipe is inserted, the butt-joint protruding block and the butt-joint groove can be combined to play a guiding and positioning role, and the insertion pipe can be prevented from being disengaged from the insertion groove. The situation that the valve body deviates is avoided, installation work is facilitated, meanwhile, the anti-torsion effect can be achieved through meshing of the butt-joint protruding blocks and the butt-joint grooves, and firmness of connector connection is ensured.

A twist-lock connector for coupling sections of a system for conveying gas includes a socket connector and a fitting connector. The socket connector includes a socket twist-lock. The fitting connector includes a fitting twist-lock. The socket connector receives the fitting connector to engage the fitting twist-lock and the socket twist-lock together by rotating the fitting connector about a connector axis relative to the socket connector.

The utility model relates to the technical field of gas pipelines, in particular to a variable-wave-pitch gas appliance connecting pipe. A variable-wave-pitch gas appliance connecting pipe comprises a corrugated pipe body, a coating layer and connector assemblies connected to the two ends of the corrugated pipe body. The corrugated pipe body is composed of a wide-wave-pitch section and two dense-wave-pitch sections, and the two dense-wave-pitch sections are connected to the two ends of the wide-wave-pitch section in the length direction respectively. The two ends of the variable-wave-pitch gas appliance connecting pipe are convenient to bend, the variable-wave-pitch gas appliance connecting pipe is convenient to install in a narrow space and a place where a pipeline needs to be bent, a connector is not prone to loosening after installation, the sealing effect is good, a right-angle elbow bent by 90 degrees does not need to be welded, cost is effectively reduced, a user can conveniently judge the position where the corrugated pipe is easy to bend, operation convenience is high, and practicability is high. The technical problems that when an existing corrugated pipe is installed in a narrow space, the end of the pipe needs to be bent in a hard mode, a connector is prone to loosening, the sealing effect is affected, and the cost is high when a 90-degree right-angle elbow is used are solved.

A method for manufacturing a tube fitting includes steps of: preparing the tube fitting; and forming a resin coating layer upon a coated region provided upon the surface of the tube fitting. Forming the resin coating layer includes: dipping the tube fitting into a coating material that includes as components a polyethylene based substance, a lubricant, and solid particles and having viscosity within a range of 4.24 to 5.27 mPa·s at 25° C., and adhering the coating material to the coated region; and, drying the coating material which is adhered to the coated region of the tube fitting. In the dipping step, the mass per unit area w is controlled within a range 0.79<w<10.07 by dipping the tube fitting while regulating a temperature of the coating material within a range of 30° C. to 40° C.

A fastener for connecting a coated conduit to a fitting or to another coated conduit includes a bushing and polymeric material coating and surrounding an external surface of the bushing. The bushing includes internal and external threading The polymeric material includes a central portion coating at least the first end of the bushing, a first flexible sleeve extending from the central portion in a first direction and creating a cavity, and a second flexible sleeve extending from the central portion in a second direction, opposite the first direction. The external threading of the bushing is configured to be threaded into a fitting or conduit such that the first flexible sleeve fits over a circumference of the fitting or a coated conduit, and the internal threading of the bushing is configured to be threaded onto coated conduit such that the second flexible sleeve fits over a circumference of the coated conduit.

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 provides a socket type drainage pipeline, and relates to the technical field of drainage pipelines. A connecting base is welded to the left side of the second pipeline, and a first pipeline is inserted into the connecting base. A connecting pipe is welded to the inner wall of the first pipeline and inserted into the second pipeline. According to the pipeline, through the arrangement of the connecting pipe and the auxiliary groove, on one hand, due to the fact that the connecting pipe is inserted into the second pipeline, after the first pipeline and the second pipeline are inserted, under the action of the connecting pipe, the strength of the joint of the first pipeline and the second pipeline can be improved; and on the other hand, through the arrangement of the auxiliary groove, the water flow resistance can be reduced, and the situation that water flow impacts the connecting position of the connecting pipe and the second pipeline, and leakage is caused is avoided. The blocking base is welded to the first pipeline, the right end face of the blocking base makes contact with the left end face of the connecting base, and in the using process, the sealing performance of the connecting position of the first pipeline and the second pipeline can be improved through contact of the right end face of the blocking base and the left end face of the connecting base.

A cable gland has first and second parts, which are mutually engageable, and a seal assembly that is housed within and between the first and second parts. The seal assembly has at least one carrier on each side of a cable seal. Each carrier seats a respective body seal. Each cable seal has an opening through which a cable can pass. In use the cable seal forms a seal about the cable. Each body seal is arranged to form a respective seal against the inner surface of the first. The cable seals provide water ingress protection about the cable, while the body seals provide water ingress protection between the inside of the first part and the seal assembly. The parts and, when engaged, are configured to apply a longitudinal compression to the seal assembly. This results in the carriers squeezing the cable seal therebetween into sealing contact with and about an outer surface of the cable. This, in combination with the action of the body seals provides water ingress protection.

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 provides a spherical contact type movable joint, and belongs to the field of high-pressure pipe fitting manufacturing. The connecting device comprises a main body, a joint and a connecting nut, a thread is arranged at one end of the main body, and the joint is clamped in the coupling nut; the coupling nut is connected with the thread, so that the joint is connected with the main body; a spherical plug is arranged at one end, facing the main body, of the joint, and an arc-shaped groove is formed in the main body; a sealing gasket is arranged in the groove; and the spherical plug is in contact with the groove through the sealing gasket. According to the utility model, the joint and the main body are directly designed to be in spherical contact and are sealed by the sealing gasket, so that the sealing effect is good, and leakage caused by vibration can be effectively avoided.

An end nut assembly comprising a nut body defining a first portion and a second portion, a first opening is adjacent the first portion and a second opening is adjacent the second portion, and an axial bore extends between the first opening and the second opening. A bite ring defines an outer ring and a plurality of teeth extends radially inwardly from the outer ring, and a spacer defines an inner surface and an outer surface, wherein the inner surface defines a cavity centrally located within the spacer. The end nut assembly does not contain an o-ring.

The invention relates to the technical field of connectors, and provides a system connector suitable for offshore oil and gas underwater production, the system connector comprises a mounting body and a connecting body, butt joint parts are arranged on the peripheral walls of the ends, close to each other, of two connected pipelines in a protruding mode, a sealing gap is formed between the two butt joint parts, and a sealing ring is embedded in the sealing gap; the two installation bodies are arranged corresponding to the two pipelines, each installation body is arranged on the peripheral wall of the corresponding pipeline in a sleeving mode, and the installation bodies are located on the sides, away from the sealing gaps, of the butt joint parts of the corresponding pipelines. The connecting body is arranged on the peripheral walls of the two mounting bodies in a sleeving mode so as to connect the two mounting bodies in series. According to the system connector suitable for offshore oil and gas underwater production, the installation convenience and sealing performance of the connector can be improved.

The invention discloses an external thread clamping sleeve joint, and particularly relates to the technical field of pipe joints, the external thread clamping sleeve joint comprises a butt joint nut, a first clamping sleeve, a second clamping sleeve and a hollow rubber ring, the hollow rubber ring is arranged in a limiting groove, and a cavity in the hollow rubber ring is filled with sealant; the first flow guide grooves are formed in the peripheral side wall of the second clamping sleeve in an array mode and used for guiding the sealant into a concave cavity generated when the connecting pipe is extruded after the second clamping sleeve deforms; in the screwing process of the external thread connector, the external thread connector can extrude and break the hollow rubber ring, so that a gap between the butt joint nut and the external thread connector is sealed through sealant firstly, and when the external thread connector is screwed till the lowest point of the chamfer of the second clamping sleeve crosses the lowest point of the first flow guide groove, the sealing effect is achieved. And finally, the sealant enters the concave cavity generated by extruding the connecting pipe after the deformation of the second clamping sleeve from the first flow guide groove, so that the sealing between the external thread joint and the connecting pipe is realized.

The invention relates to the technical field of double clamping sleeves, and discloses a high-pressure sealing self-locking anti-disengaging double clamping sleeve structure which comprises a front clamping sleeve and a rear clamping sleeve which are arranged on the outer wall of a steel pipe in a sleeving mode, the front clamping sleeve comprises a conical part, a straight barrel part and an abutting part which are sequentially connected, and the conical part is close to a connector; the inner wall of the end, close to the connector, of the conical part and the inner wall of the steel pipe form a first sealing face, the outer wall of the end, close to the connector, of the conical part and the inner wall of the connector form a second sealing face, the inner wall of the end, close to the conical part, of the straight barrel part and the outer wall of the steel pipe form a third sealing face, and the outer wall of the end, close to the conical part, of the straight barrel part and the inner wall of the connector form a fourth sealing face. The rear clamping sleeve can push the abutting part to enable the conical part and the straight barrel part to abut against the steel pipe and the connector. And four sealing surfaces are formed among the front clamping sleeve, the steel pipe and the structure, so that the sealing performance of the whole structure is greatly improved.

The utility model discloses a quick-assembly type pipe joint and a pipe drawing device, and relates to the technical field of pipeline joints, the quick-assembly type pipe joint comprises a pipe body assembly, the pipe body assembly comprises a circulation pipe body, the circulation pipe body comprises at least two ports, and joint pipe bodies with the diameter larger than that of the circulation pipe body are arranged on the ports of the circulation pipe body; the fastening assembly is located in the connector pipe body and comprises an elastic reset piece and a locking unit which is located at the end, away from the circulation pipe body, of the elastic reset piece and can transversely move in the connector pipe body; each locking unit comprises a locking lantern ring with the diameter gradually decreased from inside to outside and a plurality of locking clamping teeth located on the inner circumferential wall of the locking lantern ring, and each locking clamping tooth comprises a plurality of inward clamping tooth parts arranged in the axial direction of the locking lantern ring. The clamping teeth of the inward clamping tooth parts incline towards the flowing pipe body, and the extending lengths of the clamping teeth of the inward clamping tooth parts are sequentially decreased from inside to outside. And the inward clamping tooth parts can clamp the outer walls of the pipelines to be connected, so that the pipeline splicing efficiency is improved.

The miniature double-seal quick connector comprises a female connector, one end of the female connector is connected with a male connector in an inserted mode, the outer side of one end of the female connector is movably connected with a sliding sleeve in a sleeved mode, the male connector is provided with a limiting ring, and the outer diameter of the limiting ring is larger than that of the sliding sleeve; a first connecting groove is formed in one end of the female connector, a second connecting groove is formed in the female connector in a concave mode, a first threaded connection groove is formed in one end of the second connecting groove in a concave mode, a movable channel is connected between the second connecting groove and the first connecting groove, and a first movable sealing piece is movably connected into the second connecting groove. One end of the first sealing piece penetrates through the movable channel to reach the first connecting groove. Two groups of independent sealing structures are adopted, a sealing piece I and a sealing piece II of an axial O-shaped ring are sealed with the interiors of the female joint and the male joint, and a sliding sleeve is matched with the male joint to form another sealing, so that a redundant sealing mechanism is formed, and manual quick insertion and extraction are supported.

An axial force measurement device includes a frame, a tightening actuation unit that performs tightening operation upon a screw type tube fitting installed upon a tube upon which is formed an annular portion projecting in the radially outward direction from the tube, a testing member, and a mating member holding unit that holds the testing member into which the tube fitting is screwed and that is coupled to the tube. The tightening actuation unit and the mating member holding unit are provided to the frame in line along the direction of a reference axis that extends in the direction of the center line of the tube fitting and the tube axis of the tube. The testing member has a first part that engages with the tube fitting, and a second part against which the annular portion of the tube is pressed.

A system for coupling pipe segments endwise to each other comprise a tubular hub secured proximate to an end face of each pipe segment, each hub having a radially extending mounting block therearound, a seal extending around the hubs between the mounting blocks and a clamping ring sized to extend around the tubular hub, said clamping ring having a radially extending positioning lip at each end of wherein the positioning lips surround the mounting blocks.