44results about "Fluid pressure sealed joints" patented technology

A pipe fitting includes a fitting body defining an inner body surface, an outer body surface, a first axial fitting end, and a second axial fitting end, the inner body surface defining a fitting bore extending from the first axial fitting end to the second axial fitting end, and an assembly window extending through the fitting body from the outer body surface to the inner body surface.

A pipe belling process where a heated thermoplastic pipe end is forced over a sealing gasket on a forming mandrel, with the pipe being subsequently cooled to retain the gasket in an internal groove simultaneously formed in the pipe end. The sealing gasket is a two-component gasket with an elastic component and a plastic component. The elastic component is stretched over a portion of the plastic component during assembly with the plastic component acting as a belling ramp for the gasket during the subsequent pipe belling operation.

System for conveying at least one transport capsule comprising: - a pipe (2) comprising first and second trunk (21, 22) that are reciprocally assembled; - a coating (3) whose function is structural and of at least partially waterproofing the pipe (2) and comprising tensioned ribbon-shaped means (31) that wraps and compresses at least one portion of the pipe (2). The ribbon-shaped means (31 ) is made of fibre-resin composite material and comprises said fibres impregnated in said resin.

A stainless-steel corrugated pipe assembly, including a stainless-steel corrugated pipe, a water inlet connector connected to an end of the stainless-steel corrugated pipe, and a water outlet connector connected to another end of the stainless-steel corrugated pipe. A water inlet assembly is arranged in the water inlet connector, and a water outlet assembly is arranged in the water outlet connector; a transfer pipe is connected between the water inlet assembly and the water outlet assembly, and the transfer pipe is arranged in the stainless-steel corrugated pipe. In condition of the water outlet connector being in a turned-on state, high-pressure water entering the water inlet assembly opens the water outlet assembly through the transfer pipe; while the water inlet assembly and the water outlet assembly are connected to water, part of the stainless-steel corrugated pipe in the water inlet connector and the water outlet connector is further sealed.

A plurality of raised surfaces on the platform absorb the torque of fasteners that contact the surface while rotating relative to the platform. A significant disproportionate increase in torque compared to the associated increase in bolt stress is observed by the increase in torque felt when tightening the fastener. Raised surfaces are used on the knobs of mechanical pipe couplings to increase the fastener's resistance to damage when a power tool is used to apply torque to the fastener.

The application provides a spiral rib inner lining connecting piece of a clark pipe, relates to the technical field of pipelines and comprises a connecting pipe, the pipe opening of the connecting pipe and / or the clark pipe is provided with a matched outer wedge ring and inner wedge ring to form a wedge locking structure, an outer ring part is coaxially sleeved on the outside of the connecting pipe, a driving cavity is formed between the outer ring part and the connecting pipe, a movable push ring is arranged in the driving cavity, the inner wall of the outer ring part is provided with a communication channel communicated with the driving cavity and an annular gap, and an annular sealing capsule is embedded in the annular gap; when the clark pipe is connected by the wedge locking structure, the pipe opening of the clark pipe pushes the movable push ring to slide in the driving cavity, so that the fluid is pressed into the annular sealing capsule through the communication channel, the annular sealing capsule is expanded and sealed, and the gap among the outer ring part, the movable push ring and the pipe opening of the clark pipe is sealed; the application synchronously realizes sealing through the plugging action, significantly improves the connecting efficiency, sealing reliability and pull-out resistance, and is suitable for various buried and pressure-bearing pipeline works.

An annular gasket for a fitting assembly includes a gasket inner surface defining a gasket void and a central rib extending radially inward into the gasket void, a gasket axis extending centrally through the gasket void; a gasket outer surface defining a first gasket shoulder extending radially outward at a first axial end of the annular gasket and a second gasket shoulder extending radially outward at a second axial end of the annular gasket opposite the first axial end; a first sealing ridge extending radially inward at the first axial end of the annular gasket; and a second sealing ridge extending radially inward at the second axial end of the annular gasket, wherein the central rib is positioned axially between the first sealing ridge and the second.

The pipe fitting of the present invention comprises: an outer fitting pipe having a first inner circumferential surface on one axial side and a second inner circumferential surface on the other axial side, wherein the outer circumferential surface of a pipe is fitted from one axial side to the first inner circumferential surface; an inner fitting pipe having a first outer circumferential surface on one axial side that fits from the other axial side to the inner circumferential surface of the pipe, and a second outer circumferential surface on the other axial side that fits from the other axial side to the second inner circumferential surface, the end on the other axial side being connected to a fluid device; an annular sealing member disposed on the first outer circumferential surface to seal between the first outer circumferential surface and the inner circumferential surface of the pipe; a first limiting portion that fits with the first inner circumferential surface via the outer circumferential surface of the pipe, thereby limiting relative movement of the pipe relative to the first inner circumferential surface towards one axial side; and a second limiting portion that fits with the second inner circumferential surface via the second outer circumferential surface, thereby limiting relative movement of the inner fitting pipe relative to the second inner circumferential surface towards the other axial side.

The split housings 30A and 30B that hold the rubber ring 33 do not detach in the axial direction. [Solution] A bolt 15 is inserted into the first bolt opening 13 of the first flange 11A and the second bolt opening 14 of the second flange 12A, and the bolt 15 is tightened with a nut 16. The stopper washer 22 of the bolt-side washer 21 and the stopper washer 26 of the nut-side washer 25 engage with the side surfaces 32 of the split housings 30A and 30B, respectively.

A cap configured for engagement with a coupling can comprise an annular ring extending circumferentially around an outer portion of the cap, the cap defining an inner end and an outer end disposed opposite from the inner end, the annular ring defining a sealing surface between the inner end and the outer end, the annular ring defining a raised lip at the inner end, the raised lip extending radially outward from the sealing surface; and a web, the web enclosing the annular ring.

A device for connecting two pipe sections, comprising a connecting body (1) with a cylindrical bore (11) that transitions at both ends into an outwardly widening conical bore (12), two union nuts (2), each having a bore (21) for receiving a pipe section (5, 6) and provided with an internal thread (22) by which they can be screwed onto an external thread (13) arranged at each end of the connecting body (1), and two cutting rings (3) with a cutting element (33), wherein at least one radially circumferential groove (16) is arranged in the cylindrical bore (11) of the connecting body (1), in which a sealing ring (4) is arranged for sealing against a pipe section (5, 6) inserted into the bore (11). The invention further relates to a connection arrangement with such a device and to a method for connecting two pipe sections with such a device.

A fitting (100), comprising: a hollow body (102) that includes an opening at a first end; a sealing member (144) positionable on the hollow body; a hook shaped element (148) coupled to the sealing member; and a ramp element (138) including a sloped surface positioned against an inner face of a throat of the hook shaped element, the ramp element (138) configured to be actuated by a draw mechanism coupled to the hollow body such that the ramp element (138) moves relative to the hook shaped element, wherein the hook shaped element is engaged with the sloped surface of the ramp element (138) such that actuation of the ramp element (138) draws the hook shaped element and the sealing member in a direction parallel with a shaft of the hook element, thereby translating the sealing member from an open position to a connection sealing position, and wherein the inner face of the hook shaped element (138) includes a non-flat shape.

A hooked pipe coupling includes a first pipe coupling segment comprising a first arcuate body portion defining a first end and a second end opposite the first end, a first hook extending from the first end, and a first fastener lug extending from the second end, the first arcuate body portion defining a first sloped ledge surface; and a second pipe coupling segment comprising a second arcuate body portion defining a third end and a fourth end opposite the third end, a second hook extending from the third end, and a second fastener lug extending from the fourth end, the second arcuate body portion defining a second sloped ledge surface; wherein the first sloped ledge surface presses against the second sloped ledge surface in a tightened configuration of the hooked pipe coupling to prevent axial movement of the first pipe coupling segment relative to the second pipe coupling segment.

This utility model discloses a retractable hydraulic pipeline connection sealing device, relating to the field of pipeline connection sealing technology. The utility model includes a first connecting flange and a second connecting flange. The second connecting flange has a second mounting ring fixedly installed on its outer side, and several sealing grooves are axially and equidistantly formed on its outer side. The first connecting flange has a first mounting ring fixedly installed on its outer side, and a mounting groove is formed on one side of the first connecting flange. A sealing component is disposed inside the mounting groove, penetrating the inner surface of the first connecting flange. A control unit is disposed at the end of the first connecting flange near the mounting groove. The sealing component consists of a sealing airbag and a piston plate. By setting the sealing component, which consists of a sealing airbag, piston plate, etc., it is the core part of realizing the sealing function of the device. The sealing effect is ensured through the coordinated action of each component. The control unit is used to control the working state of the sealing component.

[Problem] Split housings 30A, 30B that hold a rubber ring 33 do not separate in an axial direction. [Solution] A bolt 15 is inserted into a first bolt opening 13 of a first flange 11A and a second bolt opening 14 of a second flange 12A, and the bolt 15 is tightened with a nut 16. A stopper washer 22 of a bolt-side washer 21 and a stopper washer 26 of a nut-side washer 25 engage with side surfaces 32 of split housings 30A, 30B, respectively.

A gasket (100) for sealing two mating surfaces is provided, the gasket comprising: a rigid non-metallic core (102) defining a bore (104), the core comprising a first face (106) extending away from the bore and a second face (122) opposite the first face; and at least one sealing layer (108), wherein the first face comprises a substantially planar inner region (112) defining a plane and a serrated region (110) comprising a plurality of serrations (118) extending substantially normal to the plane, wherein the substantially planar inner region is located between the bore and the serrated region, wherein the serrations are recessed from the first face such that the serrations do not pass through the plane, wherein the at least one sealing layer covers at least a portion of the serrated region of the first face.

The pipe connection device according to an embodiment of the present invention for achieving the above purpose comprises: a housing including: a front female thread portion formed on an inner surface of one end thereof; and a rear female thread portion formed on an inner surface of the other end thereof, and having a receiving space formed therein for receiving components; a housing nut inserted into the one end of the housing, having a pipe hole formed therein through which a refrigerant pipe passes in a forward direction; a first stopper positioned behind the housing nut in the receiving space to restrict reverse movement of the refrigerant pipe; an outer washer positioned behind the first stopper; one or more pipe O-rings positioned behind the outer washer; an inner washer positioned behind the one or more pipe O-rings; a second stopper positioned behind the inner washer to restrict the reverse movement of the refrigerant pipe; and a main packing positioned behind the second stopper to support the second stopper.

In a flow path joint structure, the sealing performance is maintained even when the tightening by the connecting member is loosened. [Solution] The sealing member 30 is provided with a cylindrical main body 31 having a communication hole 33 connecting a pair of flow path holes 10a and 20a, and annular insertion parts 32, 32 that protrude axially outward away from the main body 31 and are press-fitted into annular grooves 12, 22 formed at the connecting ends of the flow path holes 10a and 20a of one of the fluid devices. In the pre-press-fit state, the radial thickness of the insertion parts gradually increases toward the axial outward direction, and the radial size of the grooves gradually decreases toward the axial inward direction opposite to the axial outward direction. Since the radial thickness of the insertion parts is greater than the radial size of the grooves, in the post-press-fit state, the insertion parts are prevented from advancing axially inward relative to the grooves and are thus prevented from coming loose.

This invention relates to the field of column oven technology and provides a column oven for rapid column replacement, comprising a column oven body; connectors connected to both ends of the column; symmetrically slidable sliding frames on the surface of a support frame; adapters adapted to the connectors rotatably mounted on the sliding frames; rotating parts rotatably mounted between the inner walls of each clearance groove; curved grooves adapted to the rotating parts on the outer wall of the connectors; symmetrically slidable abutment parts adapted to the corresponding rotating parts on the surface of the support frame; and slidable driving parts adapted to the two abutment parts on the surface of the support frame. This column oven abandons the traditional threaded connection method and adopts an integrated structure of plug-in positioning and drive locking. Only by placing the column on the support frame and pushing the driving parts can the two ends be synchronously connected and fixed. It can be operated by a single person with one hand, significantly shortening the column replacement time, adapting to high-frequency, multi-batch testing scenarios, and improving column replacement efficiency.

An annular gasket for a fitting assembly includes a gasket inner surface defining a gasket void and a central rib extending radially inward into the gasket void, a gasket axis extending centrally through the gasket void; a gasket outer surface defining a first gasket shoulder extending radially outward at a first axial end of the annular gasket and a second gasket shoulder extending radially outward at a second axial end of the annular gasket opposite the first axial end; a first sealing ridge extending radially inward at the first axial end of the annular gasket; and a second sealing ridge extending radially inward at the second axial end of the annular gasket, wherein the central rib is positioned axially between the first sealing ridge and the second.

System for conveying at least one transport capsule comprising:a pipe (2) comprising first and second trunk (21, 22) that are reciprocally assembled;a coating (3) whose function is structural and of at least partially waterproofing the pipe (2) and comprising tensioned ribbon-shaped means (31) that wraps and compresses at least one portion of the pipe (2).The ribbon-shaped means (31) is made of fibre-resin composite material and comprises said fibres impregnated in said resin.

The utility model relates to the technical field of pipeline connection and fastening, and discloses an exhaust connecting pipe fastening assembly capable of adjusting the pipe diameter, which comprises an exhaust pipe, a rotary reducing clamping part and an inflation attaching sealing part, and a connecting pipe is arranged at one end of the exhaust pipe. Through the synergistic effect of related structures, adjustment can be conducted according to the actual pipe diameter of the exhaust pipe and the actual pipe diameter of the connecting pipe, stable clamping can be achieved no matter what difference exists in the pipe diameter, special clamping parts do not need to be independently arranged for different pipe diameters, and the pipe diameter adjusting device is suitable for various pipeline connecting scenes; all the components are matched with one another to generate uniform and continuous clamping force, so that the pipeline is firmly fixed, and the pipeline is prevented from loosening or displacing due to factors such as vibration and pressure change in the exhaust process. The stable clamping ensures the normal operation of the exhaust system.

The utility model provides a kind of injection mold cooling pipeline connecting structure, it is related to pipeline connecting technical field, comprising: connecting pipe fitting and cooling pipe fitting, the both ends of connecting pipe fitting are installed in the side end of cooling pipe fitting;The outside of connecting pipe fitting is equipped with two adjacent locating rings;The side end outside of connecting pipe fitting is equipped with locating piece;The outside of both ends of connecting pipe fitting is equipped with multiple movable grooves;Rotary mounting has rotating clamping plate in the inside of movable groove;The side of rotating clamping plate is equipped with slot, and the side end of rotating clamping plate is slidably installed in the outside of locating piece. By air injection into strong elastic sealing ring through inlet valve, air enters into weak elastic sealing ring through flow guide pipe, flat weak elastic sealing ring gradually expands to seal connecting pipe fitting and cooling pipe fitting, ensure the tightness of pipeline connection, solve the problem that pipeline can be deformed due to thermal expansion and contraction effect, and this deformation leads to gap in pipeline connection part.

The present invention relates to pipe joints. More specifically, it relates to a coupling assembly for connecting pipes and a manufacturing method therefor. The coupling assembly for connecting pipes according to an aspect of the present invention includes two or more couplers which are disposed to oppose each other to connect pipes that are arranged continuously along the axial direction, and a coupling assembly for connecting the pipes while a fastening member is provisionally assembled to a plurality of the couplers.

This relates to a clamping system for connecting the first and second pipes. [Solution] A clamp system for connecting two pipes having bearing surfaces protruding from their ends comprises a collar (10) and a washer (20), the collar including a belt (12) and the inner circumferential surface of the belt defining a recess into which the bearing surface can be inserted. The washer has an annular portion (22) positioned inside the belt and carries a support projection (30) having a hook (30A) configured to catch on the edge (13) of the belt and a connecting portion (30B) extending between the annular portion and the hook. The connecting portion is bent radially outward and carries at least one retaining wing (30D) having a retaining edge (30D'), the retaining wing (30D) having a width (l30D) measured axially, the width decreasing toward its free end (30D''), and the edge of the belt is housed in a space formed between the retaining edge and the hook.

This invention belongs to the technical field of pipeline connection equipment, specifically a sealing and docking device for coal mine gas pipelines and its usage method. This device addresses the problems of poor sealing and stability, cumbersome operation, and difficulty in disassembly associated with traditional docking methods. The technical solution is as follows: The coal mine gas pipeline sealing and docking device includes a connecting joint and pipeline bodies at both ends. The connecting joint is equipped with a fixing locking ring and a fixing inner locking ring. Through the cooperation of trapezoidal tenons and trapezoidal teeth in the limiting structure, and the cooperation of piston plate I, rubber sealing ring II, and annular air bag in the sealing structure, a stable connection and reliable sealing between the connecting joint and the pipeline body are achieved. Simultaneously, the driving structure controls the operation of the sealing structure, and the support structure facilitates the installation and fixation of the device. This device improves the sealing and stability of pipeline docking, is easy to operate, and facilitates disassembly and maintenance.