5554results about "Flanged joints" patented technology

The invention relates to the technical field of pipe connectors, in particular to an underwater pipeline elastic sealing end connecting device which comprises an outer pipe, a core pipe is inserted into one end of the outer pipe, a first flange plate is fixed to one end of the outer pipe, a pipe body of the core pipe is fixedly sleeved with a second flange plate, and bolt holes are formed in the surfaces of the first flange plate and the second flange plate. A limiting groove is formed in the outer ring face of the end, extending into the outer pipe, of the core pipe, a baffle is inserted into the outer wall of the outer pipe, one end of the baffle is inserted into the limiting groove, a first rubber cover is arranged on the inner wall of the outer pipe, one end of the first rubber cover is fixed to the surface of a lantern ring, and the lantern ring is slidably connected into the outer pipe. The beneficial effects of the invention are that the installation process is simplified by adopting a mode of combining plug-in connection and screw connection. The core pipe and the outer pipe are connected in an inserted mode, the first flange plate and the second flange plate are locked in a screwed mode through the first screw and the first nut, and bolt holes do not need to be accurately aligned. And the lantern ring, the spring and other components can be assembled in advance and then integrally mounted on the pipeline, so that the mounting efficiency is improved.

A fluid transfer system component for internally measuring fluid density in real- time. The component may be a flange comprising a base having a first face and a second face, a primary fluid passageway extending through the base from the first face to the second face, a secondary fluid passageway extending through the base from the first face to the second face, and an outside wall, a portion of which is configured to operably engage with a measuring device and comprises a third opening. The primary fluid passageway may have a non-circular cross-section allowing the secondary fluid passageway to be parallel to the primary fluid passageway. The third opening may be in fluid communication with the secondary fluid passageway allowing the measurement device to measure fluid data such as fluid density via the secondary fluid passageway.

The invention provides a chemical pipeline flange loosening leakage early warning method and system based on distributed optical fiber sensing, and relates to the technical field of chemical safety monitoring. According to the system, a double-parameter distributed optical fiber sensor is arranged on the outer circle of a flange in a spiral winding mode, temperature and vibration signals of the flange are collected in real time and preprocessed, and the real-time change value of the temperature difference between a leakage point and the environment and the vibration energy value of the 20-200 Hz frequency band are obtained. Establishing a multi-modal signal fusion criterion model which comprises a vibration criterion (the sudden increase of vibration energy is greater than or equal to 3dB) and lasts for more than 10 seconds, and calculating the looseness degree of the bolt according to the vibration criterion; the real-time change of the temperature criterion is greater than or equal to + / -0.5 DEG C and lasts for more than 10 seconds; and a gradient early warning mechanism is implemented through the data model. The technology fills the blank of flange looseness monitoring and leakage early warning, realizes the sensitivity and reliability of flange looseness and leakage monitoring, and ensures the safety of chemical production.

First and second pipe elements are joined end to end by a coupling. The first and second pipe elements have a circumferential groove at an end, and each of the grooves has a floor. A plurality of segments, each having oppositely disposed ends, and a respective connection member positioned at each end, form the coupling. A first end of each segment is connected to a second end of another of the segments such that said segments surround a central space for receiving the second pipe element.

The invention belongs to the technical field of smoke dust and flue gas sampling, and particularly relates to a smoke dust and flue gas sampling gun with a convenient-to-assemble and disassemble gun feeding support, the smoke dust and flue gas sampling gun comprises a sampling mechanism, the sampling mechanism comprises a sampling gun main body, a gun barrel and a smoke dust and flue gas sensor, the gun barrel is detachably sleeved with a centering fixing mechanism, a plugging mechanism and a pushing mechanism, the plugging mechanism penetrates through the centering and fixing mechanism and is fixedly connected with the centering and fixing mechanism, the pushing mechanism is fixedly connected with the plugging mechanism, and the centering and fixing mechanism is used for being fixedly connected with a flange plate of a flue and enabling the plugging mechanism and a sampling pipeline to be coaxially arranged. The device can be fixed on flange plates of different flues through the centering and fixing mechanism, the flange plates and the plugging mechanism can be always in a coaxial state, then sampling mechanisms of gun barrels with different pipe diameters can be pushed to move through the pushing mechanism, the position of a smoke dust and flue gas sensor in the flues can be accurately adjusted, and the sampling accuracy of the smoke dust and flue gas sensor is improved. And long-time manual supporting is not needed.

A union is used to join mating high pressure flow line components. The union comprises an abutment, an annular gland, a seal assembly, and a plurality of threaded connectors. The abutment is between bearing surfaces on the mating components. The gland is formed by alignment of rabbets on the mating components and extends axially across and radially inward of the bearing surface. The seal assembly is carried in the gland and comprises first and second elastomeric seals on each side of a metal backup ring. The threaded connectors extend through holes in the mating components and apply axial load to the abutment to form the union.

The invention relates to the technical field of ball valves, and discloses a ball valve butt joint structure which comprises two ball valve assemblies in coaxial butt joint, each ball valve assembly comprises a valve body, a valve element and a valve rod, each valve element is movably arranged in the corresponding valve body, one end of each valve rod penetrates through the corresponding valve body and is fixedly connected with the corresponding valve element, and the other end of each valve rod extends out of the corresponding valve body and is sleeved with a gear. The butt joint end face of each valve body is provided with a rack extending in the circumferential direction, and the rack of one ball valve assembly can be meshed with the gear of the other ball valve assembly. A limiting pin is elastically connected into at least one valve body, a limiting hole matched with the limiting pin is formed in the butt joint face of at least another valve body, the limiting pin can move between a locking position and an unlocking position in the axial direction relative to the valve bodies, the limiting pin is inserted into the limiting hole in the locking position, and the limiting pin is disengaged from the limiting hole in the unlocking position. According to the ball valve butt joint structure, locking and opening of the two ball valve assemblies can be completed only through two actions, and operation is rapid and convenient.

The hose joint includes: a nipple having conductivity and provided along an insertion space of the hose body; a sleeve deformable in a radial direction and provided so as to surround an outer circumference of the insertion space of the hose body formed along an outer peripheral surface of the nipple; a plurality of separated holders provided outside of the sleeve to cover an outer face of the sleeve in a circumferential direction and be separable in the radial direction; and a tightening member provided to extend across the plurality of separated holders so as to move the individual separated holders closer together in the radial direction and cause diameter reduction of the sleeve. The nipple having the conductivity has a grounding clip having conductivity, the grounding clip is locked to an outer circumference of the nipple, each of the separated holders having a holder extension part.

An assembly comprising: a first tube defining a first surface; a second tube defining a second surface, wherein the second surface is configured to contact the first surface at an interface; a fixation mechanism comprising: a first split flange disposed around the first tube; a second split flange disposed around the second tube; and one or more springs coupled to the first split flange and the second split flange, wherein the one or more springs are configured to transfer a relative force between the first tube and the second tube and towards the interface, and wherein the second split flange is configured to be disposed between the interface and the one or more springs.

The utility model discloses a non-welding detachable rotary flange which comprises a connector arranged at the end of a hose and used for installing the flange and further comprises a limiting assembly, the limiting assembly comprises at least one first limiting piece, at least one limiting groove is formed in the outer wall of the connector, the first limiting piece is located in the limiting groove, and the first limiting piece is located in the limiting groove. The flange is arranged outside the connector in a sleeving mode, and a second limiting piece is selectively arranged on the outer wall of the connector. In order to avoid the situation that a limiting screw mentioned in the prior art is cut off, multiple different implementation modes are provided for limiting the position of the flange in the axial direction, the position of the flange can be limited by optimizing the structure of the limiting assembly, and therefore the arrangement of the limiting screw is omitted; a second limiting piece can also be arranged on the outer wall of the connector, the end, away from the opening of the connector, of the flange can abut against the second limiting piece, and therefore the second limiting piece and the first limiting piece are matched with each other to limit the position of the flange in the axial direction.

A connection system for reinforced thermoplastic polymer (RTP) pipe includes a first pipe with a first end and a reinforced thermoset resin (RTR) coupler positioned adjacent to the first end of the first pipe. The RTR coupler has an annular body with a first socket extension extending into the first end of the first pipe and a first thermoplastic tie layer provided between the first socket extension and the first end of the first pipe. A first set of wedges is positioned around an outer surface of the first end of the first pipe, and a first flange is fitted around the first set of wedges, wherein the first set of wedges is wedged between the first end and the first flange.

The utility model provides a corrosion-resistant flange sealing ring for a high-speed railway pipeline, and relates to the technical field of sealing rings. The utility model comprises a flange body, a rubber ring is arranged on one side of the flange body, a fixing device is arranged on the arc surface of the rubber ring, the fixing device comprises two mutually symmetrical grooves, the two grooves are arranged on the arc surface of the rubber ring, a mounting groove is arranged on the flange body corresponding to the rubber ring, the size of the mounting groove is matched with the size of the rubber ring, the rubber ring is fixedly connected with a spring by means of the groove, one end of the spring is fixedly connected with a clamping block, a clamping groove is arranged on the flange body corresponding to the clamping block, the size of the clamping groove is matched with the size of the clamping block, and a triangular plate is fixedly connected to the end of the clamping block away from the rubber ring. The utility model achieves the effect of fixing the rubber ring and the flange body through the fixing device, and brings convenience to the staff to replace the rubber ring when the rubber ring is aged.

The utility model relates to the technical field of flanges, in particular to a high-compression-resistance flange which comprises a high-strength flange body, a plurality of bolt holes are formed in the surface of the high-strength flange body, steel sleeves are fixedly inserted into the bolt holes and used for being arranged between bolts and the bolt holes in a sleeved mode, rubber clamping strips are fixedly inserted into the surfaces of the steel sleeves, and the rubber clamping strips are used for being arranged between the bolts and the bolt holes in a sleeved mode. The rubber clamping strip is integrally formed on the surface of the rubber sleeve, and the rubber sleeve is fixedly arranged at the end of the steel sleeve in a sleeving mode. The flange with the high compression resistance has the advantages that the steel sleeves of the I-shaped round pipe structures are additionally arranged in the bolt holes, and the design of the reinforcing ribs is combined, so that the compression resistance of the bolt holes is remarkably improved. The steel sleeve and the reinforcing ribs of the steel sleeve form a firm supporting framework, deformation of the bolt holes under high pressure is effectively prevented, and the overall stability and safety of the flange are guaranteed.

The invention discloses an anti-blocking angular regulating valve of a horizontal runner, and belongs to the technical field of angular regulating valves, the anti-blocking angular regulating valve comprises a valve body and a filter plate arranged in the valve body and used for filtering and screening, a positioning frame is positioned and mounted in the valve body, and a first rotating shaft is rotatably mounted in the positioning frame; a water wheel is arranged at the left end of the first rotating shaft, an eccentric wheel is connected and mounted at the right end of the first rotating shaft, a collision block is mounted on the outer side face of the eccentric wheel, an arc-shaped block is correspondingly arranged above the collision block, and the arc-shaped block is mounted below the mounting plate. According to the anti-blocking angular regulating valve of the horizontal flow channel, the filter plate is arranged, the metal filter plate is installed in the inner cavity of the valve body, fluid impurities in conveyed sewage can be filtered and screened through the filter plate, and then the filtered and screened fluid impurities can be discharged out of the outer side of the bottom of the valve body through the discharging pipe; the sewage impurities can be taken and treated.

A pipe coupling has two segments with action surfaces in facing relationship. Attachment elements on each segment, in the form of lugs, accommodate adjustable fasteners which draw the segments together when tightened. Support surfaces on the lugs engage one another to visually indicate that a proper installation of the coupling has been achieved.

The invention relates to the technical field of valve detection, in particular to a valve with a leakage detection function, which comprises a valve body, the two sides of the valve body are respectively connected with the end parts of an input pipe and an output pipe, a valve core is rotatably sealed in the valve body, a through hole is formed in the middle of the valve core in a penetrating manner, and a detection hole is formed in the bottom of the through hole in a penetrating manner; the bottom of the valve body is in threaded connection with the input end of the pressure gauge through a detection pipe, a second valve element is rotationally sealed in the detection pipe, a second detection hole of the second valve element is perpendicular to the detection hole, and the valve body is in threaded connection with the input end of the pressure gauge through the detection pipe. And the accuracy of detecting the pressure in the pipeline structure by the pressure gauge is also improved.

The utility model discloses a special rotary joint for an ultralow-temperature fluid loading and unloading arm, and relates to the technical field of rotary joints. The connector comprises a connector body, a first flange plate is arranged at the top of the connector body, a second flange plate is arranged above the first flange plate, a plurality of mounting holes are formed in the first flange plate and the second flange plate, and mounting assemblies are arranged in the mounting holes in the second flange plate. And a driving mechanism is arranged in an inner cavity of the mounting assembly. When dismounting is needed, the driving mechanism is rotated reversely, thrust to the balls is reduced, the mounting holes in the first flange plate are obliquely arranged, the balls can retract, and then the tight connection state of the first flange plate and the second flange plate is relieved, so that tedious operation of traditional flange connection is avoided, and the dismounting efficiency is improved. The connecting and detaching efficiency of the loading and unloading arm and the external pipe is improved, time and labor cost is reduced, and convenience and reliability of the loading and unloading system are improved.

The utility model provides a valve capable of reducing scouring and wear of a valve plate, comprising: a valve body, a buffer mechanism, a secondary filter screen and a primary filter plate, wherein a valve body is arranged in the middle position of the valve body, and compared with the prior art, the utility model has the following beneficial effects: by adding a valve body and a buffer mechanism, a group of buffer mechanisms are arranged between a water source and the valve body, and are fixed by bolts, the buffer mechanism has a built-in buffer ridge 2 and a variable diameter conducting member, which can reduce the speed of the water flow, and two groups of buffer ridges 1 are arranged at the bending part of the conducting groove on the inner side of the left end of the valve body, which can reduce the flow rate of the water flow again before the water flow contacts the valve plate, thereby achieving the effect of reducing scouring and wear of the valve plate, and by adding a valve body, a buffer mechanism, a secondary filter screen and a primary filter plate, the primary filter plate is installed to the inner side of the second connecting flange at the left end, and the secondary filter screen is installed to the inner side of the second connecting flange at the right end, thereby filtering out debris.

The invention provides a valve sealing structure, a valve comprises a valve body, a valve cover installed on the valve body, a valve plate located in the valve body and a transmission mechanism used for enabling the valve plate to move linearly, a first static sealing structure is arranged between the valve plate and the valve body, and a valve plate cover located on the low-pressure side of the valve plate is detachable. A second static sealing structure is arranged between a connecting flange of the valve body and a pipeline flange used for being connected with a pipeline, a third static sealing structure is arranged between the valve cover and the valve body, and a third static sealing structure is arranged in the valve body. The transmission mechanism converts rotary motion from the outside of the valve deck into linear motion and transmits the linear motion to the valve plate, and a dynamic sealing structure is arranged between the transmission mechanism and the valve body.

A gasket 4 includes: a cylindrical body portion 10 having a communication hole 10a for providing communication between flow passage holes 2c, 2c formed in two fluid devices 2, 2, respectively; and an annular primary sealing portion 11 projecting from a radially inner side of an axially outer end portion of the body portion 10 toward an axially outer side and to be press-fitted into an annular primary sealing groove 2d formed in each fluid device 2. In a state before the primary sealing portion 11 is press-fitted into the primary sealing groove 2d, an entirety of an inner circumferential surface 10b of the body portion 10 is formed such that a diameter thereof gradually decreases from both axially outer ends thereof toward an axially inner side.

The utility model discloses a gate valve with improved bidirectional sealing performance, which comprises a valve body, baffle rings are symmetrically arranged in the valve body, the outer side surfaces of the baffle rings are fixedly connected with the inner wall of the valve body, a gate plate is arranged on the inner sides of the baffle rings, an auxiliary pipeline is arranged above the gate plate, and the auxiliary pipeline is fixedly connected with the side surface of the valve body. Annular grooves are symmetrically formed in the surfaces of the two sides of the gate plate, sealing rings are fixedly connected to the surfaces of the inner sides of the annular grooves, a guide pipe is fixedly connected to the upper surface of the gate plate, the lower end of the guide pipe communicates with the annular grooves, the upper end of the guide pipe penetrates through the auxiliary pipeline to be connected with a hydraulic mechanism, and a driving mechanism is installed at the upper end of the auxiliary pipeline. The connecting flange is fixedly connected with the valve body. The problem that in the using process of a traditional gate valve, abrasion of a sealing ring on the gate plate sealing face is more and more serious is solved, the situation that the gate valve leaks due to the fact that the sealing performance of the gate plate is reduced after long-time use is avoided, the using sealing performance of the gate valve is improved, and the service life of the gate valve and the gate plate is prolonged.

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 composite pipe includes a hollow, cylindrical liner, a flange end attachment comprising a flange and a cylindrical main body with a bore extending therethrough within which an end portion of the liner is disposed, and a thermoset outer layer comprising resin-impregnated filaments. The filaments of the thermoset outer layer are in contact with and wound about at least a portion of an external surface of the liner and at least a portion of an external surface of the cylindrical main body of the flange end attachment.

The utility model relates to the related technical field of mold inserts, in particular to a high-strength flange plate structure which comprises a flange plate, and a reinforcing shell is fixedly connected to the outer side surface of the flange plate. By arranging the flange plates, the reinforcing shell, the reinforcing layer, the through hole, the bolt, the first gasket, the second gasket, the nut, the gasket, the first limiting groove, the second limiting groove, the first sealing ring and the second sealing ring, the two flange plates are connected together in a butt joint mode, and then the first gasket is arranged on the outer side surface of the bolt in a sleeving mode and penetrates through the flange plates through the through hole; when the flange plates are spliced together, the second gasket sleeves the outer side of the bolt, then the nut is rotated to fix the flange plates together, and through the arrangement of the gasket, when the two flange plates are spliced together, the two flange plates can be spliced more tightly.

The utility model discloses a two-way sealing butterfly valve which comprises a sealing butterfly valve body, flange plates are fixedly connected to the two ends of the sealing butterfly valve body, a plurality of bolts penetrate through the outer sides of the flange plates, rubber rings are fixedly connected to the inner rings of the flange plates, and a limiting block is fixedly connected to one side of the middle of the interior of the sealing butterfly valve body. A limiting block is arranged on the outer side of the flow limiting plate, a limiting groove is formed in the outer side of the flow limiting plate and matched with the limiting block in a clamped mode, a flow limiting hole is formed in the flow limiting plate, a circulating hole is formed in the outer side of the middle of the flow limiting plate, and a conical pipe is arranged in the flow limiting hole in a sleeved mode. The sealing butterfly valve and the rubber ring are arranged, the sealing butterfly valve is connected with the pipeline, the rubber ring needs to be inserted into the pipeline in the connecting process, the sealing abutting effect is achieved, then the outer side of the rubber ring is sleeved with the sealing ring, and the sealing effect can be enhanced in the pipeline connecting process.

A compression sealing gasket and a sealing system of a gas-insulated portion of a voltage apparatus. The sealing system includes two components fastened together, wherein each component includes an assembly face, and a compression sealing gasket that is arranged axially between the assembly faces. The compression sealing gasket includes a ring-shaped main body having a main axis. The main body has a generally flat planar configuration that extends perpendicular to the main axis and includes an outer side, an inner side, and end faces which delimit the main body along the main axis and connect the sides. The gasket further includes a lip projecting upwards in axial direction parallel to the main axis. The lip is arranged in a distance to both sides and engages a ring-shaped fixation groove formed in an assembly face. The fixation groove receives the lip of the gasket with slight compression.

The utility model relates to the technical field of water purifiers, and in particular to a water purifier with an anti-drip function. When a filter element is installed in an integrated water circuit mechanism, a small cylindrical convex column can conflict with a water stop valve opening and closing structure and press down a piston rod of the water stop valve, so that the water stop valve opening and closing structure and the water stop valve are in an open state. At the same time, a water outlet push rod of the filter element is inserted into the small cylindrical convex column to open the water stop valve in the cylindrical convex column. When the filter element is disassembled from the integrated water circuit mechanism, the water stop valve piston rod loses the pressure of the filter element, and the water stop valve piston rod is reset under the action of a reset spring, so that the water stop valve and the water stop valve opening and closing structure are restored to a closed state. At the same time, the water stop valve in the cylindrical convex column loses the conflicting pressure of the filter element water outlet push rod, and the water stop valve is closed. Therefore, even if the water inlet source is not closed, it can prevent a large amount of water from dripping into the water purifier or onto the ground when the filter element is disassembled and assembled, thereby improving the automatic water stopping and anti-drip function of the water purifier and improving the convenience of disassembling and assembling and maintaining the water purifier.

A quick-connector assembly for joining abutting flanged ends of two tubular members includes first and second connector portions joined by a rotatable hinge having a hinge pin coupling the first connector portion and the second connector portion so that the first and second connector portions encircle about abutting flanged ends of the tubular members when the first and second connector portions are in a closed position. Further, a stand having a bracket with at least one hole for accommodating the hinge pin is designed to at least partially support the weight of the connector assembly and the flanged ends of the tubular members.

The invention belongs to the technical field of natural gas pipelines, and particularly relates to a self-compensation device for a metal sealing ring of a high-pressure natural gas pipeline. An outer connecting sleeve is fixedly connected to the exterior of a first pipeline, and a wear-resistant mechanism is mounted between a first inner connecting sleeve and a second inner connecting sleeve; the space between the first sealing ring and the packing sealing plate and the space between the second sealing ring and the packing sealing plate are filled with rigid packing, and the space between the first sealing ring and the second sealing ring is filled with flexible packing; a first toothed plate is fixedly connected to the exterior of the inserting plate, a sliding rod is slidably connected to the inner side of the translation groove, a clamping mechanism is installed at one end of the sliding rod, and a positioning mechanism is installed at the other end of the sliding rod; according to the device, rolling friction of balls is adopted to replace sliding contact, high-pressure vibration abrasion is greatly reduced, rigid-flexible double-filler combination elastically responds to deformation, continuous pressing of a sealing face is maintained, internal pressure impact is resisted through the right-angle toothed plate meshing self-locking design, and zero-leakage stable connection under the extreme working condition is achieved in combination with three-stage insertion rod positioning and bolt fastening.

A coupling for joining pipe elements has cast segments attached end to end surrounding a central space. The segments define a channel that receives a gasket. Side surfaces within the channel have angularly oriented capture surfaces which are engaged by bulbous rims on the gasket which prevent the gasket from being dislodged from the channel when at least one pipe element is inserted into the central space. Side surfaces may also have support surfaces between the capture surfaces. The gasket supports the segments in a preassembled state wherein the segments are in spaced relation sufficient to permit insertion of one or more pipe elements while the segments are attached end to end.