31 results about "Coupling (piping)" patented technology

The invention provides a mass flow meter measurement compensation method and system combined with pipeline stress perception, and relates to the technical field of instrument correction. The method comprises the steps that an original stress data set is obtained; constructing a stress characteristic parameter set; constructing a sensor parameter set; based on the stress characteristic parameter set and the sensor parameter set, calculating the stress variation of the pipeline in the axial direction, the radial direction and the torsion direction to obtain a stress variation data set; utilizing the stress change data set and the sensor parameter set to establish a coupling model of the pipeline stress change to the vibration frequency and the phase signal of the sensing pipe, and calculating a corrected mass flow value; according to the comparison result of the corrected mass flow value and the calibration point in the long-term operation process, a parameter optimization algorithm is applied to conduct self-adaptive adjustment on the coupling coefficient, and coupling model optimization is achieved. The technical problem of measurement deviation caused by external stress, structural deformation and dynamic load in the prior art is solved.

The application belongs to the technical field of control system, and particularly relates to a composite heating method and system for starting and running of a molten salt pipeline, which comprises a resistance electric heat tracing band evenly laid along the outer wall of a pipeline to be heated, and an electromagnetic induction heat tracing device arranged on a set pipe section of the outer wall of the pipeline at a specific interval; when the pipeline is in an empty pipe state, the resistance electric heat tracing band is started, and the whole pipeline is heated to a first preset temperature higher than a solidification point of molten salt according to a pipe wall temperature; when the whole pipeline temperature reaches the first preset temperature and is maintained for a set time, and the temperature field stability condition and the heat preservation duration condition are met, molten salt is injected into the pipeline, then the resistance electric heat tracing band is turned off, and the electromagnetic induction heat tracing device is started; at this time, the molten salt medium temperature at the outlet of the pipeline is taken as a control target, and the temperature of the molten salt in the pipeline is maintained at a higher second preset temperature by independently adjusting the power of each distributed electromagnetic induction heat tracing device. Through coupling of the heating mode and the medium state, a balance is achieved among safety, energy consumption and temperature control.

The utility model belongs to the technical field of automobile pipelines, and particularly relates to a pipe joint connection dismounting device which comprises a male plug, a female joint and a dismounting device body, a protrusion is arranged in the male plug, a clamp is arranged in the female joint, and the protrusion in the male plug penetrates through the clamp in the female joint to be fixed. The detachable pipe connector has the advantages that the male plug is smoothly pulled out by expanding the clamp through the detaching device, and physical damage to the pipe connector caused by forced detaching is avoided.

A main line (1) for distributing or collecting a medium, and in particular a temperature control medium, has a main pipe (2) and at least three outlets (3, 4). The outlets (3, 4) are connected to the main pipe (2), the main pipe (2) having an axis (A) and defining an axial direction. At least one of the outlets (3, 4) has a pipe connector (5) and a pipe section (6). A first end of the pipe section (6) is connected to the main pipe (2). A second end of the pipe section (6) is connected to the pipe connector (5). The first end and preferably the second end of the pipe section (6) are integrally connected to the main pipe (2).

The application provides a pipeline stress-aware mass flowmeter measurement compensation method and system, relates to the technical field of instrument correction, and the method comprises the following steps: obtaining an original stress data set; constructing a stress characteristic parameter set; constructing a sensor parameter set; calculating stress change amounts of the pipeline in axial, radial and torsional directions based on the stress characteristic parameter set and the sensor parameter set, and obtaining a stress change data set; establishing a coupling model of pipeline stress change on sensor vibration frequency and phase signal by using the stress change data set and the sensor parameter set, and calculating a corrected mass flow value; and according to the comparison result of the corrected mass flow value and a calibration point in a long-term operation process, applying a parameter optimization algorithm to adaptively adjust the coupling coefficient, so that the coupling model is optimized. The technical problem of measurement deviation caused by external stress, structural deformation and dynamic load in the prior art is solved.

To impart high bending resistance to piping at a low cost.SOLUTION: An underground laying pipe joint comprising: a cylindrical large-diameter portion extending in an axial direction; a cylindrical small-diameter portion having a diameter smaller than a diameter of the large-diameter portion and extending in the axial direction; and a deformation guiding portion connecting the large-diameter portion and the small-diameter portion, the deformation guiding portion being more deformable than other portions.SELECTED DRAWING: Figure 2

The utility model provides a water collector, an air conditioner indoor unit and air conditioning equipment. The water collector comprises a pipe joint, a cover plate and a plurality of water distribution pipes, and the pipe joint, the cover plate and the water distribution pipes are of a split type assembly structure. The pipe joint comprises a joint part and an expansion part, and the joint part is provided with a connecting part used for being connected with an external pipeline; one end of the expansion part is connected with one end of the connector part, and the circulation sectional area of the other end of the expansion part is larger than that of one end, connected with the connector part, of the expansion part; the cover plate seals and covers one end, far away from the connector part, of the expansion part and is connected with the expansion part, and the cover plate is provided with a plurality of piping holes communicated with the internal space of the pipe joint; and the plurality of water distribution pipes are inserted into the corresponding piping holes one by one and are fixedly connected with the cover plate. According to the scheme, the structure of the water collector is improved, the structure of the connector of the water collector is simplified, the machining amount is reduced, and the cost is reduced.

To provide a collective joint with no leak of drainage from a connection part at a low cost.SOLUTION: A collective joint 200 includes a collective part 210 that has a vertical pipe connection part 212 installed above, a horizontal pipe connection part 213 provided on the side, and a straight pipe connection part 211B provided below; and a straight pipe portion 220 connected to the straight pipe connection part 211B. The upper end of the straight pipe portion 220 has a receiving portion 220A with an enlarged diameter, and the straight pipe connection part 211B is arranged inside the receiving portion 220A.SELECTED DRAWING: Figure 2

The invention discloses a titanium steel penetration sleeve and a preparation method thereof, and belongs to the field of ship piping accessories. In order to solve the problems that an existing penetration pipe is high in cost and poor in performance, the preparation method of the titanium steel penetration sleeve comprises the steps that the two ends of a steel pipe are in threaded connection with titanium pipe joints, and an outer pipe is formed; an inner pipe is arranged in the outer pipe, and the inner pipe is welded with the titanium pipe joint in the outer pipe; the inner pipe is made of a titanium material; in the threaded connection process, the shape and size of a thread are determined according to the distribution of a stress concentration area of threaded connection of the steel pipe and the titanium pipe joint, and leakproofness simulation analysis is carried out. The titanium-steel composite through-cabin casing pipe is prepared without a complex process, the cost is low, the titanium-steel composite through-cabin casing pipe can be formed only through conventional machining, and operation is easy and convenient; through double fixation of thread pre-tightening and welding, the titanium steel penetration casing pipe forms a cabin crossing structure which is completely closed and has sealing and strength, adaptive connection between the titanium pipe and a ship plate is achieved, complex working conditions can be effectively coped with, and stability is high.

Furthermore, the present invention provides a manifold joint and piping structure with even higher sound insulation properties. [Solution] The manifold 10 comprises an upper connecting pipe 11 having a vertical pipe connection portion 13 located on the upper side and a horizontal pipe connection portion 14 provided on the vertical pipe connection portion 13, a tubular lower connecting pipe 12 connected to the upper connecting pipe 11 and decreasing in diameter from top to bottom, and a first sound insulation cover 20 that covers the upper connecting pipe 11 and the lower connecting pipe 12 from the outside, wherein the first sound insulation cover 20 has an upper cover 21 that covers the upper connecting pipe 11 from the outside and a lower cover 22 that covers the lower connecting pipe 12 from the outside, and the lower end of the lower cover 22 is located even lower than the lower end of the lower connecting pipe 12.

Traditionally, the main reciprocating transport pipes through which chilled and hot water circulates have been sealed piping systems using steel pipes (such as white pipes or internally lined steel pipes). However, due to the relative installation locations of the main transport pipes and air conditioning equipment, bending points are required when connecting the pipes. This posed a problem when using steel pipes, as it necessitated the use of elbows and flexible joints. [Solution] A high-pressure resistant resin pipe with an outer cross-linked polyethylene layer thickness of 1.5 mm and an inner cross-linked polyethylene layer thickness of 3.55 mm is used as the attached pipe, joined to a high-pressure resistant fitting, and used to connect the reciprocating transport main pipe and the air conditioning equipment (fan coil unit).

The utility model discloses a kind of pipe fitting connecting ornament cover, with body unit and pre-cut unit arranged on the body unit;The body unit has body part, and the body part has multiple side wall bodies;The pre-cut unit has multiple pre-cut parts, and the pre-cut part is arranged on the side wall body of the body part: by which the pipe fitting connecting ornament cover can be used for various pipe fitting piping elbow connecting place cover decoration, so as to improve the convenience of the pipe fitting piping project and effectively reduce the cost of the pipe fitting piping project.

A handle mechanism of a piping member includes an inner member turnably attached to a pipe body and connected to a valve member in a fluid passage of the pipe body, an outer member turnably disposed outside the pipe body, and a coupling pin coupling together a first coupling end portion of the inner member and a second coupling end portion of the outer member in the direction of turning. The pipe body has a support surface located around the second coupling end portion. When a force acts on the outer member in a direction of pivoting the outer member about a pivot axis, the second coupling end portion engages the support surface, thereby allowing the outer member to be supported by the pipe body in the direction of pivoting.

The utility model belongs to the technical field of metallurgical converter equipment, and particularly relates to a quick direct connection device for a converter trunnion and a rotary joint, which comprises a flange and a separated insertion tube, the converter trunnion is connected with the rotary joint through the flange, one end of the converter trunnion is connected with the left end of the flange through a bolt, and the right end of the flange is connected with the rotary joint through a bolt. A plurality of trunnion inner matching pipes are transversely arranged in the converter trunnion, a plurality of inserting holes are transversely formed in the rotary joint, a plurality of communicating holes are transversely formed in the flange in a penetrating mode, the trunnion inner matching pipes are inserted into the communicating holes from one side of the flange, and the diameter of the middle of each communicating hole is smaller than that of the two ends. And the communicating hole in the other side of the flange is fixedly connected with the inserting hole of the rotary joint through a separated inserting pipe. According to the direct connection device, the trunnion inner piping is connected and fixed through the flange, accurate positioning can be achieved, and installation is convenient; the flange and the rotary joint are connected and fixed through the separated inserting pipe, the efficiency is higher, the matching of a piping joint in the trunnion and the rotary joint is not needed, and the problems of leakage and piping breakage are avoided.

A method for performing a hydraulic fracturing operation includes providing a manifold assembly to deliver a fracturing fluid into a well bore. The manifold assembly has a low-pressure section and a high-pressure section. The high-pressure section includes first side inlets at a first side of the manifold assembly, second side inlets at a second side of the manifold assembly. The second side inlets face away from the first side inlets and the second side faces towards fracturing pumps. The method includes fluidly coupling piping assemblies to respective first side inlets. Each piping assembly, at least in part, extends laterally from the first side towards the second side and spans over the high-pressure section. The method includes fluidly coupling high-pressure discharge portions of the fracturing pumps with the piping assemblies such that, high-pressure discharge fluid flows from the fracturing pumps into the high-pressure section via the respective first side inlets.

1. Name of the product in this design: Right Angle Pipe Connector (135 degrees). 2. Application of this design: In automotive active damping suspension hydraulic piping systems, chassis hydraulic oil piping systems, air conditioning piping systems, battery liquid cooling piping systems, and motor oil cooling piping systems, the right-angle pipe connector is used to connect with metal rigid pipes and is fixed to the base through the right-angle pipe connector. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

1. Name of the product in this design: Right Angle Pipe Connector (180 degrees). 2. Application of this design: In automotive active damping suspension hydraulic piping systems, chassis hydraulic oil piping systems, air conditioning piping systems, battery liquid cooling piping systems, and motor oil cooling piping systems, the right-angle pipe connector is used to connect with metal rigid pipes and is fixed to the base through the right-angle pipe connector. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

A method for performing a hydraulic fracturing operation includes providing a manifold assembly to deliver a fracturing fluid into a well bore. The manifold assembly has a low-pressure section and a high-pressure section. The high-pressure section includes first side inlets at a first side of the manifold assembly, second side inlets at a second side of the manifold assembly. The second side inlets face away from the first side inlets and the second side faces towards fracturing pumps. The method includes fluidly coupling piping assemblies to respective first side inlets. Each piping assembly, at least in part, extends laterally from the first side towards the second side and spans over the high-pressure section. The method includes fluidly coupling high-pressure discharge portions of the fracturing pumps with the piping assemblies such that, high-pressure discharge fluid flows from the fracturing pumps into the high-pressure section via the respective first side inlets.

The invention provides a pipe joint. The pipe joint (10) connects two pipes (100f, 100s) for a CO2 refrigerant, and is provided with: a first module (12f); a second module (12s) that overlaps and is coupled to the first module (12f) in the first direction (Df); a pipe hole (14) which penetrates the first module (12f) and the second module (12s) and to which the two pipes (100f, 100s) are connected at both ends; a gasket (40) that is sandwiched between the first module (12f) and the second module (12s); a coupling bolt (82) that extends in the first direction (Df) and couples the first module (12f) and the second module (12s); and an engagement part (26) which is located on the opposite side of the coupling bolt (82) with the piping hole (14) therebetween, and which engages a part of the first module (12f) and a part of the second module (12s) in the first direction (Df).

This utility model discloses a ferrule-type pipe fitting, including a fitting body, a steel pipe, a ferrule, a nut, and a conical seal. The fitting body mates with the ferrule and nut via a fitting opening on its right end, and connects to an external valve block via an external threaded port on its left end. The conical seal is fitted onto the steel pipe and the ferrule, with its first annular surface abutting against the fitting opening and conforming to the inner surface of the nut, its conical surface conforming to the outer circumferential surface of the ferrule, and its second annular surface conforming to the outer circumferential surface of the steel pipe. This utility model, through the multi-faceted conforming design of the conical seal, achieves more convenient assembly and more reliable sealing, while extending its service life, and is suitable for various industrial piping systems.

A lubricating structure for a gear coupling, comprising a box body (5), a first mechanism, a second mechanism, and oil inlet pipe assemblies (14), wherein the first mechanism and the second mechanism are arranged opposite to each other; a lubricating oil groove (22) is arranged around the periphery of a first support bearing (6) and a second support bearing (20) to form an oil chamber; toothed sleeve connecting oil holes (4) are in communication with oil inlet holes (15), a first oil supply hole (3) and a corresponding second oil supply hole (23) are arranged side by side and are in communication with the corresponding toothed sleeve connecting oil hole, a first spray point (28) is provided at the end of each first oil supply hole distant from the corresponding toothed sleeve connecting oil hole, and a second spray point (27) is provided at the end of each second oil supply hole distant from the corresponding toothed sleeve connecting oil hole; the oil inlet pipe assemblies are mounted on the box body, and the oil inlet pipe assemblies are in communication with the oil inlet holes and are connected to external lubricating piping of a gearbox. The lubricating structure can mitigate the problems of wear and heat generation between inner teeth and outer teeth, and achieve the effects of lubricating and cooling.

The objective is to provide pipe fittings, manifold pipe fittings, rain gutters, and methods for manufacturing pipe fittings. [Solution] The pipe joint A has a curved pipe section 1 having a flow path inside and openings at both ends, an annular first connecting section 2 surrounding the opening at one end of the curved pipe section 1, and an annular second connecting section 3 surrounding the opening at the other end of the curved pipe section 1. It is a resin integral molded product and has a parting line from the molding process in the middle of the curved pipe section 1. It is preferable that the cross section of the curved pipe section 1 including the parting line is elliptical. It is preferable that the first connecting section 2 and the second connecting section 3 are connecting sections for connecting pipes with opposing ends.

This provides a piping structure that facilitates the connection of manifold joints to pipe materials. [Solution] The piping structure 1 comprises a joint body 24 having a vertical pipe connection portion 16 at its upper end that can be connected to a vertical pipe P1, a manifold joint 10 having a horizontal pipe connection portion 17 that protrudes from the outer surface of the joint body and can be connected to a horizontal pipe P3, an extension vertical pipe 30 connected to the lower end of the joint body, a joint cover 35 that covers the manifold joint, an extension cover 40 that covers the extension vertical pipe, and a floor slab 103 in which a through hole 103a is formed and at least a part of the joint cover and the extension cover as a whole is located inside, the lower end of the extension vertical pipe is flush with the lower surface of the floor slab or protrudes downward from the lower surface of the floor slab.

The utility model relates to the technical field of fire-fighting pipeline installation, and discloses a building fire-fighting pipeline quick connection pipe fitting which comprises an installation pipe, a first thread is arranged on the left side of the outer wall of the installation pipe, a second thread is arranged on the right side of the outer wall of the installation pipe, and an isolation sleeve is fixedly connected to the middle of the outer wall of the installation pipe. Twisting sleeves are arranged on the outer walls of the second threads and the first threads, positioning sleeves are arranged on the sides, away from each other, of the two twisting sleeves, a plurality of fixing blocks are fixedly connected to the sides, away from each other, of the mounting pipes, second rotating shafts are rotationally connected between the adjacent fixing blocks, and rotating plates are fixedly connected to the outer walls of the second rotating shafts. According to the utility model, after the connecting pipe is inserted to be attached to the mounting pipe, the connecting pipe moves to extrude the mounting pipe, and the C-shaped plate is clamped, so that the purpose of quick connection without the help of the outside is achieved, the practicability is improved, and the mounting efficiency is accelerated.

A tube-attached coupling structure is provided by using a piping coupling with good compatibility, workability and processability. A manufacturing method of the tube-attached coupling structure includes a step of preparing a photocurable gel-like body in a hollow cylindrical shape, a step of fitting the photocurable gel-like body in the attaching hole, a step of inserting an end portion of a connection tube into a hollow hole of the photocurable gel-like body, and a step of curing the photocurable gel-like body by irradiating the photocurable gel-like body with light.

A coupling for insulated piping is disclosed having first and second parts for forming the coupling. The first and second parts include an inner conduit portion for fluid communication with an inner tube of an insulated pipe and an outer conduit portion, the inner conduit portion and outer conduit portion forming therebetween a space for fluid communication with the insulating part of an insulated pipe. In use, cold liquid is transported in the inner conduit portions. The first and second parts comprise flanges. The inner conduit portion of the first part has a projection comprising a lower thermal expansion region. The second part has a projection-receiving portion for receiving the projection of the first part, the projection-receiving portion having a co-efficient of thermal expansion that is greater than the lower thermal expansion region of the projection.

This invention discloses a testing platform for ultimate vacuum and pumping speed of a vacuum pump after repair, relating to the field of vacuum pump testing. It includes a control box and a vacuum pump. A testing platform is fixedly installed on one side of the control box, and a movable plate is slidably installed on the testing platform. Multiple clamping mechanisms are movably installed on the movable plate to hold and drive the vacuum pump's hose connector to mate with the control box's ventilation interface. This invention, through the movable plate and elastic clamping structure, can quickly place and securely limit the vacuum pump hose connector. The transmission structure achieves automatic alignment and docking of the connector and ventilation interface, eliminating the tedious manual connection of the traditional piping, effectively reducing pre-test assembly time and the burden of manual operation. Simultaneously, the guiding structure ensures smooth and stable movement. The movable plate's movement, along with a pusher component, compresses the internal structure of the cylinder, driving gas into the sealing bladder to automatically seal the docking position. A clamping plate further limits the position of the clamping structure.

The utility model discloses a refrigeration machine pipeline installation positioning device relates to refrigeration machine pipeline installation technical field, including base, the top of base is provided with adjusting mechanism, the top of adjusting mechanism is provided with the placing plate, the right side fixed connection of placing plate has the folding plate, the top of placing plate is provided with self -adaptation clamping mechanism, self -adaptation clamping mechanism includes motor, motor fixed connection is in the left side of folding plate, the output of motor is fixedly connected with the rotating lever through the shaft coupling, and motor drives the rotation of carousel through the belt pulley group, and three groups of arc holes in carousel synchronous linkage fixed link, make mobile sleeve along the radial sliding of slide rail, drive the self -adaptation of abutting wheel and fit different diameter's refrigeration pipeline, realize stepless regulation clamping, replace traditional fixed hoop, significantly improve the versatility and installation efficiency, avoid the looseness or deformation of pipeline because of the size difference.

1. Name of the product in this design: Right Angle Pipe Fitting (Double-Ear Flange). 2. Application of this design: In automotive active damping suspension hydraulic piping systems, chassis hydraulic oil piping systems, air conditioning piping systems, battery liquid cooling piping systems, and motor oil cooling piping systems, the right-angle pipe connector is used to connect with metal rigid pipes and is fixed to the base through the right-angle pipe connector. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

A Luer connection is described between a first component (15) of a medical fluid piping system, in particular a CSTD component with a dry-break coupling, and a second component, such as a syringe, which can be connected to the first component (15) via a detachable screw connection (52) and a Luer connector (20). To create a Luer connection that reduces production and operating costs while minimizing operational safety risks, the Luer connector (20) is attached to the first component (15) such that it is rotationally fixed to the first component (15) in an initial operating state and, after applying a predetermined limit torque, can be moved into a second operating state in which it is freely rotatable relative to the first component (15) in at least one direction opposite to the thread direction of the detachable screw connection, preferably in both directions of rotation.