CN217108728U - Butt joint component for deformable plastic composite pipe port and flange port - Google Patents
Butt joint component for deformable plastic composite pipe port and flange port Download PDFInfo
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- CN217108728U CN217108728U CN202220375730.XU CN202220375730U CN217108728U CN 217108728 U CN217108728 U CN 217108728U CN 202220375730 U CN202220375730 U CN 202220375730U CN 217108728 U CN217108728 U CN 217108728U
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Abstract
The utility model discloses a butt joint component of a deformable plastic composite pipe port and a flange port, which comprises a group of elastic sealing rings and an annular sealing sheet, wherein a circle of internal support connecting pipe of a connecting end ring is radially extended outwards from one end part; the inner wall of the annular structure is provided with a taper tightening disc and a plurality of tightening pieces, and the outer surface of each tightening piece is provided with a wedge-shaped structure; during installation, the elastic sealing ring is inserted into the plastic composite pipe along with the inner support connecting pipe until the connecting end ring abuts against, the plurality of tightening pieces evenly surround the outer wall of the port of the cladding pipe, the tightening disc ring is sleeved on the tightening pieces and moves towards the flange under the action of the bolt, the connecting end ring is driven to axially extrude the annular sealing piece, and the plastic composite pipe is evenly extruded through the tightening pieces to enable the plastic composite pipe to radially shrink and deform so as to extrude the elastic sealing ring to deform. The utility model discloses can realize more stable convenient butt joint to can strengthen the tensile of pipeline butt joint port position and pull out and sealing performance, the used each spare part of structure all is easy to produce manufacturing, and the cost is controllable, has wide market prospect and huge economic value.
Description
Technical Field
The utility model relates to a pipeline butt joint technique mainly is to the port butt joint technique of the compound pipe of plastics that can deform under the external pressure effect, specifically is the dock structural component that is used for the port and the flange of this type of pipeline.
Background
As the withstand voltage plastic composite pipe who transmits high-pressure fluid (oil, gas, water etc.), plastic composite pipe is the low-cost mainstream tubular product that has corrosion resistance, and is common including plastic steel wire composite pipe, the fine composite pipe etc. of plastics glass, tubular product will various materials that can strengthen pipeline strength compound in order to play the purpose of the withstand voltage ability of reinforcing pipeline in plastics, and these composite pipe have simultaneously and have the performance that can radial deformation compression under the effect of external pressure, the utility model discloses the scheme is just based on the deformation characteristics of this type of tubular product and a connection scheme of innovation.
During construction of pipelines, the pipelines need to be connected on site, including butt joint between pipeline ports and butt joint between the pipelines and flange ports, the quality of butt joint directly influences the overall pressure resistance and durability of the pipelines, and problems such as leakage of the pipelines often occur at butt joint parts; in addition, the convenience and detachability of the butt joint both have direct critical influence on the construction cost and efficiency of the pipeline.
For the butt joint between the pipeline and the flange port, the butt joint is more complex compared with the butt joint between the pipeline and the flange port, the flange port is a plane, the problems of sealing and pulling resistance between two different materials of the pipeline and the flange port need to be solved, and a corresponding butt joint piece needs to be used. In the prior art, a plurality of technologies for butt joint by matching connecting pieces with sealing rings and the like exist, but the connection modes basically do not comprehensively and better solve the technical problems that the radial stress of the pipe is uniform, the friction force of the drawing force is generated in a dispersing manner, stronger tensile strength and sealing performance are provided, the construction and installation are more convenient, and the like. The utility model discloses just based on this, the pertinence provides a butt joint scheme of synthesizing the innovation to acquire better butt joint effect.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a but compound pipe port of deformation plastics and butt joint component of flange port to realize more stable convenient butt joint, and can strengthen the tensile of pipeline butt joint port position and pull out and sealing performance.
In order to realize the technical purpose, the utility model discloses a scheme is: a deformable plastic composite pipe port and butt joint component of the flange port, the said flange is along equipartition to have axial bolt hole, the outer wall of the said plastic composite pipe port position is a flat wall, characterized by that to include a pack of elastic seal rings and a ring gasket, also include, a internal stay leads the connecting tube, the maximum external diameter of the tube body of the tube matches with internal diameter of the plastic composite pipe, one end of the tube body extends out radially and connects the end ring, the said ring gasket is set up between end ring of the connection and flange butt joint port; the pipe body of the internal-bracing connecting pipe is also provided with an inward-concave ring groove for sleeving an elastic sealing ring, and the maximum external diameter formed after the elastic sealing ring is sleeved in the inward-concave ring groove is smaller than the internal diameter of the plastic composite pipe; the tightening disc is of an annular structure, the inner wall of the tightening disc is provided with a taper, and axial bolt holes are uniformly distributed on the tightening disc and correspond to the bolt holes on the flange; the plurality of tension bolts are matched with the axial bolt holes to realize that the tightening plate moves towards the flange; the outer surface of each tightening piece is provided with a wedge-shaped structure matched with the taper of the inner wall of the tightening disc, the length of each tightening piece can cover an elastic sealing ring sleeved on the inner support guide connecting pipe in a sleeving manner, and the cross section of each tightening piece is in an arc shape; during installation, the internal-supporting connecting pipe sleeved with the elastic sealing ring is inserted into the plastic composite pipe until the connecting end ring butts against the port of the plastic composite pipe, the plurality of tightening pieces uniformly surround the outer wall of the port of the coated plastic composite pipe, the tightening disc is sleeved on the tightening piece in a ring mode, the tightening disc moves towards the flange under the action of the axial force of the bolt to drive the connecting end ring to axially extrude the annular sealing sheet, and the plastic composite pipe is uniformly extruded through the tightening piece to be radially contracted and deformed so as to extrude the elastic sealing ring to deform.
As a further improvement, the inner surface of the tightening sheet has a ring convex portion at a position corresponding to the elastic seal ring mounting portion; during assembly, the recessed ring groove, the elastic sealing ring and the ring protrusion are located at the same cross-sectional position.
As a further improvement, a plurality of parallel inward grooves are uniformly formed in the inner surface of each tightening piece along the axial direction, outward grooves are formed in the middle of the outer surface of each tightening piece corresponding to the adjacent inward grooves, and the outward grooves and the inward grooves are spaced and parallel to each other.
As a further improvement, the outer surface of the tightening piece is further provided with a positioning elongated slot, the tightening disc is provided with a plurality of positioning protrusions which are uniformly distributed in the radial direction, each positioning protrusion is matched with the corresponding positioning elongated slot of the tightening piece, and the positioning protrusions can axially move in the positioning elongated slots.
Preferably, the inner surface of the grip tab has a friction enhancing structure.
Preferably, the tightening pieces are four, five outward grooves and six inward grooves are formed in each tightening piece, one outward groove is formed in the axial center line of each tightening piece and serves as a positioning long groove, and four positioning protrusions correspondingly arranged on the tightening disc correspond to the four positioning long grooves respectively.
As a further improvement, both sides of the concave ring groove are provided with tensile enhancement inclined sinking surfaces, and the inner surface of the tightening sheet is provided with a tensile enhancement inclined convex surface matched with the inner surface at the position corresponding to the tensile enhancement inclined sinking surfaces.
Preferably, the internal support connecting pipe is formed by water expansion of a stainless steel pipe.
Preferably, the axial bolt hole on the tightening plate is a bolt countersunk hole.
The utility model has the advantages that:
the uniform extrusion of the radial shrinkage deformation of the pipe can be ensured by uniformly distributing a plurality of tightening pieces, the elastic sealing ring can be uniformly compressed, the whole ring is ensured to have no sealing weak part, and the stable pressure resistance of butt joint is realized; in particular, the inner surface and the outer surface of each tightening piece are uniformly provided with an axial inward groove and an axial outward groove, so that the cross section of each tightening piece is corrugated, the curvature of each tightening piece is favorably changed along with the radial shrinkage deformation of the pipe when the tightening pieces are extruded, and the radial uniform stress of the pipe is effectively ensured.
Compared with a mode of connecting only by the outer wall, the plastic composite pipe greatly enhances the tensile resistance of the butt joint port, improves the pressure resistance, effectively distributes the surface friction force for providing the tensile resistance, and is beneficial to prolonging the service life of the pipe port;
the scheme is particularly convenient to maintain, and when leakage occurs, the elastic sealing ring and the annular sealing sheet can be further compressed to improve the sealing property only by fastening the axial bolt;
only radial extrusion force generated by axial movement of the tightening disc and the tightening sheet on the plastic composite pipe exists during butt joint, and no rotary shearing force relative to the plastic composite pipe is generated, so that shearing damage to the pipeline is effectively avoided;
the internal support connecting pipe enables the port of the plastic composite pipe to be completely isolated from high-pressure fluid transmitted in the pipe, thereby effectively protecting the weakest part of the composite pipe and ensuring the stable pressure resistance of butt joint;
all in all, the utility model discloses can realize more stable convenient butt joint between the port of the compound pipe of deformable plastics and flange to can strengthen the anti-pulling of pipeline butt joint port position and sealing performance, the equal easy manufacturing of each spare part that the structure was used, the cost is controllable, has wide market prospect and huge economic value.
Drawings
FIG. 1 is an axial cross-sectional view of the preferred embodiment of the present invention after docking;
FIG. 2 is a perspective view of the preferred embodiment of the present invention after docking;
FIG. 3 is an exploded view of the preferred embodiment of the present invention in axial cross-section after docking;
fig. 4 is a perspective exploded view of the preferred embodiment of the present invention after docking;
FIG. 5 is a front view of the support conduit in the preferred embodiment of the present invention;
FIG. 6 is a longitudinal cross-sectional view of a tensioning sheet in a preferred embodiment of the invention;
FIG. 7 is a cross-sectional view of a stretch panel in a preferred embodiment of the invention;
FIG. 8 is a perspective view of a stretch panel in a preferred embodiment of the invention;
fig. 9 is a perspective view of the tightening plate in the preferred embodiment of the present invention.
Wherein:
10 is a tightening piece, 11 is an inward groove, 12 is an outward groove, 13 is a positioning long groove, 15 is an annular convex part, 16 is a tensile reinforced inclined convex surface, 17 is a friction reinforced structure, and 18 is a wedge-shaped structure;
20 is a supporting connecting pipe, 21 is an inner concave ring groove, 22 is a first tensile enhancement inclined sinking surface, 23 is a second tensile enhancement inclined sinking surface, and 24 is a connecting end ring;
30 is a plastic composite pipe;
40 is a tightening disc, 41 is a tapered inner wall, 42 is a positioning lug, and 43 is an axial bolt hole;
50 is an elastic sealing ring;
60 is a tension bolt;
70 is a flange, 71 is a flange channel, and 72 is an axial bolt hole;
and 80 is an annular sealing sheet.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary preferred embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
The utility model relates to a but compound pipe of deformation plastics, this kind of pipeline mainly use plastics to make, can be PE, PP, compound plastics etc. for the mechanical strength of reinforcing plastics, can realize need not to increase under the condition of plastics tubular product wall thickness, compound high strength material (such as steel wire, glass fibre etc.) promotes the resistant interior pressure performance of tubular product by a wide margin for plastics tubular product can be suitable for more resistant high interior pressure corrosion-resistant application scenes; the outer wall of the port part of the plastic composite pipe is a flat wall, which means that the inner wall and the outer wall of at least one section of pipeline of the butt joint port of the plastic composite pipe are smooth flat walls and have no ripples; pressure resistance means that the plastic composite pipe can be used for conveying high-pressure fluid, can bear extremely high internal pressure, has very strong drawing resistance, and cannot cause axial drawing crack of a pipe body due to internal pressure; the plastic composite pipe is deformable, namely the plastic composite pipe has the performance of radially deforming and compressing under the action of external pressure and has certain flexibility, but is not a rigid physical structure which can not be shrunk completely; the utility model discloses a butt joint structure is just based on the deformation characteristics of this type of tubular product and the connection scheme of innovation, in other words, this scheme is not applicable to the rigid pipeline that can not radial deformation.
As shown in fig. 1, 2, 3, 4, the utility model discloses a docking structure spare that is used for between compound pipe port of deformable plastics and flange port is used for connecting the port position of compound pipe 30 of plastics and the port position of flange 70, the utility model discloses well butt joint port of flange 70 who indicates generally is the plane, and the outer edge of flange has bolt hole 72, and the middle part is flange passageway 71, and in order to ensure the pressure resistance at connection position, has the high tensile and pulls out the nature and can effectively prevent the seepage, docking structure spare is at least including following component composition, specific:
the butt joint structural member comprises an inner supporting connecting pipe 20, the maximum outer diameter of the body part of the inner supporting connecting pipe 20 is matched with the inner diameter of the plastic composite pipe, as shown in fig. 5, a circle of connecting end ring 24 is radially extended out of one end part of the pipe body, the body part of the inner supporting connecting pipe 20 can be plugged into the port of the butted plastic composite pipe 30 until the port of the plastic composite pipe 30 is abutted against one side wall of the connecting end ring 24, and the other side wall of the connecting end ring 24 is connected with the flange port through an annular sealing sheet 80; when flowing through the butt joint position, the high-pressure fluid completely passes through the inner support connecting pipe and is guided to the flange channel 71, so that the butt joint port of the plastic composite pipe 30 is completely isolated from the high-pressure fluid, and the weak part is effectively protected; moreover, the inner support connecting pipe 20 is also used for fixing and supporting the elastic sealing ring 50; in the best embodiment, the internal stay connecting tube 20 can be formed by water expansion of a stainless steel tube;
the butt joint structural member further comprises a group of elastic sealing rings 50 which are sleeved on the pipe body of the inner support connecting pipe 20 and used for preventing high-pressure fluid from flowing out from the space between the inner wall of the plastic composite pipe 30 and the outer wall of the inner support connecting pipe 20;
the abutting structural member further includes a tightening plate 40, as shown in fig. 3, 4 and 9, the tightening plate 40 is an annular structure and the inner wall 41 has a taper (i.e., is trumpet-shaped), and axial bolt holes 43 are uniformly distributed on the tightening plate 40 and correspond to the bolt holes 72 on the flange; in addition, the butt joint structural part also comprises a plurality of tensioning bolts 60 which are matched with the axial bolt holes to tighten the disc to move towards the flange;
the butt joint structural part also comprises a plurality of (a plurality of) tightening pieces 10 which are respectively and independently separated, the outer surfaces of the left end and the right end of each tightening piece 10 are respectively provided with a wedge-shaped structure matched with the taper of the inner wall of the tightening plate, and the structure can convert axial force into radial force so that the action of screwing the tightening bolt 60 is converted into the extrusion action of the tightening plate on the tightening pieces 10; in order to ensure that the tightening piece 10 is extruded and is pressed to the elastic sealing ring 50 through the radial deformation of the pipe wall of the plastic composite pipe, the length of the tightening piece 10 can simultaneously cover all the elastic sealing rings 50 sleeved on the inner support connecting pipe 20, so as to ensure that the elastic sealing rings 50 can be fully extruded and compressed, and the sealing performance is improved along with the improvement of the compression ratio of the elastic sealing rings 50; in addition, in order to make the tightening piece 10 transmit the extrusion force to the plastic composite pipe sufficiently and uniformly and increase the friction force between the pipe wall of the plastic composite pipe and the tightening piece 10 (in order to improve the axial drawing resistance), the cross section of the tightening piece 10 is in a curved shape, preferably matched with the curvature of the radian of the pipe wall of the plastic composite pipe, so as to form the tight fit between the lower surface of the tightening piece and the pipe wall of the plastic composite pipe;
during assembly, as shown in fig. 1, 2 and 3, the elastic sealing ring 50 is sleeved on the body of the inner support connecting pipe 20, and then the body of the inner support connecting pipe 20 is inserted into the port of the plastic composite pipe to be butted until the connecting end ring 24 abuts against the port of the plastic composite pipe, further, the plurality of tightening pieces 10 are uniformly wrapped around the outer wall of the port part of the butted plastic composite pipe, and the port is wrapped in a circular ring formed by the tightening pieces 10; meanwhile, the tightening disc 40 is sleeved on the tightening sheet 10, the annular sealing sheet 80 is placed between the connecting end ring 24 and the flange port, and then the tightening bolt is threaded; the tightening disc 40 moves oppositely under the action of axial force generated by tightening the tightening bolt 60, the axial force is converted into radial pressure under the action of the inner tapered wall of the tightening disc and the wedge-shaped structure of the tightening piece while the annular sealing piece 80 is extruded, the radial pressure evenly extrudes the wall of the plastic composite pipe through the tightening piece 10 to force the part of the plastic composite pipe, which is positioned on the tightening piece, to contract and deform radially, and then the elastic sealing ring 50 is extruded to be compressed to reach a certain compression ratio so as to realize the sealing of the butt joint between the ports of the plastic composite pipe; meanwhile, due to the friction force between the tightening piece 10 and the outer wall of the plastic composite pipe 30 and the friction force between the inner support connecting pipe 20 and the inner wall of the plastic composite pipe 30, which are caused by extrusion, the plastic composite pipe is axially locked and has strong anti-pulling performance.
The inventor finds out in the long-term experimental test process that the elastic sealing ring 50 is the key part for stabilizing the sealing performance, and it is the most important factor to ensure that the elastic sealing ring 50 obtains a uniform and sufficient compression ratio, and if the compression ratio of the elastic sealing ring 50 is insufficient due to uneven compression on a certain arc section of the whole ring, the arc section is easy to leak high-pressure fluid. Therefore, in order to ensure the sealing performance, it is necessary to ensure that the elastic seal ring 50 can obtain a uniform and sufficient compression ratio, and therefore, the design of the tightening pieces that provide the radial pressing force to the elastic seal ring 50 is very important. In order to ensure a sufficient compression ratio, the inner surface of the tightening sheet 10 has annular convex portions 15 at mounting portions corresponding to the elastic seal ring 50, and the amount of deformation at the respective portions can be increased; in order to ensure more uniform extrusion, in addition to independently configuring the split tightening pieces 10 into the arc-shaped cross section design conforming to the curvature of the pipe wall of the plastic composite pipe, the curvature change of the plastic composite pipe generated when the plastic composite pipe is extruded and radially contracted and deformed is also considered, therefore, the tightening pieces 10 need to be configured into the structure capable of radially changing along with the curvature without affecting the axial rigidity of the tightening pieces, the utility model discloses a related structure is originally created, namely, a plurality of parallel inward grooves 11 are uniformly configured on the inner surface of the tightening pieces 10 along the axial direction, outward grooves 12 are arranged in the middle of the outer surface part of the tightening pieces 10 corresponding to the adjacent inward grooves, as shown in figures 6, 7 and 8, the outward grooves 12 and the inward grooves 11 are mutually spaced and parallel, so that the cross section of the tightening pieces 10 is corrugated, when the tightening discs 40 extrude the tightening pieces 10, the curvature of the tightening sheet 10 can change along with the radial shrinkage deformation of the plastic composite pipe 30, and the radial uniform stress of the pipe is effectively ensured. The advantage of this kind of structure is, can ensure evenly to extrude tubular product radial shrinkage deformation, can make elastic sealing ring by even compression, ensure that elastic sealing ring 50's whole ring does not have sealed weak part, realize the stable withstand voltage of butt joint.
At the pipe body position of internal stay pipe 20 that leads, construct and be equipped with the indent annular 21 that is used for the cover to establish elastic sealing ring 50, as shown in fig. 3 and 5, the biggest external diameter that elastic sealing ring 50 cover formed after locating indent annular 21 is less than the internal diameter of plastics composite pipe 30, elastic sealing ring 50 that just so can be smooth and easy to establish the cover fills in intraductally from plastics composite pipe port, be unlikely to lead to elastic sealing ring 50 to be blockked by plastics composite pipe port to fill in or scrape the damage, can protect elastic sealing ring can not receive the damage like this, elastic sealing ring's pressurized seal, accomplish when the deformation of later stage pressurized completely. Based on this, the elastic sealing ring 50 needs to be compressed to achieve sealing, so that the inner concave ring groove 21, the elastic sealing ring 50 and the ring protrusion 15 on the tightening piece which correspond to each other on the same side of the butt joint structural member are located at the same cross-sectional portion during assembly, that is, as shown in fig. 1, the ring protrusion 15 presses the deformed inner protrusion of the plastic composite pipe wall, and further presses the elastic sealing ring 50 located in the inner concave ring groove 21 to achieve a certain compression ratio, in the best implementation case, the elastic sealing ring 50 should be compressed to 2/3 of the original thickness, of course, the specific compression ratio is determined according to the fluid high pressure actually required to be borne by the plastic composite pipe, and the compression ratio of the elastic sealing ring 50 can be adjusted by tightening and loosening the tightening bolt 60.
In addition, because the tightening pieces 10 are independent pieces, in order to quickly, efficiently and accurately fit around the outer wall of the plastic composite pipe in a surrounding manner during construction and installation, preferably, as shown in fig. 7, 8 and 9, a positioning long groove 13 is further formed on the outer surface of each tightening piece 10, a plurality of positioning protrusions 42 are radially and uniformly distributed on the tightening disc 40, each positioning protrusion 42 is matched with the corresponding positioning long groove 40 of the tightening piece, and the positioning protrusions 42 can axially move in the positioning long grooves 13. The structure can enable construction workers to conveniently and accurately utilize the tightening disc 40 to annularly position and quickly assemble the plurality of tightening pieces. To improve the pull-out resistance of the pipe butt joint, it is necessary to increase the friction between the joint and the pipe contact, sufficient friction being able to prevent the plastic composite pipes being joined from being pulled away from the flanges by the high pressure fluid, and therefore, in the preferred embodiment, as shown in fig. 7, 8 and 9, there are also friction-enhancing structures 19 on the inner surface of tightening tab 10, which may be any known structure, such as teeth.
Because the utility model discloses provide the anti-drawing frictional force among the scheme and come from tightening sheet 10 and the compound pipe outer wall of plastics, also come from internal stay pipe 20 and the compound pipe inner wall of plastics, in order to further obtain bigger reinforcing tensile force, as further improvement the both sides of the interior concave ring groove 21 of internal stay pipe 20 constitute tensile reinforcing inclined sinking face 22 and tensile reinforcing inclined sinking face 23, as shown in fig. 4, 5, it is corresponding, the internal surface of tightening sheet 10 has the oblique convex surface 16 of tensile reinforcing who matches with it at the position that corresponds to this tensile reinforcing inclined sinking face, as shown in fig. 8. This design has the following beneficial effects: firstly, tensile enhancement inclined sinking surfaces 22 and 23 are arranged on two sides of an inner concave ring groove 21 and are matched with the extrusion of a tensile enhancement inclined convex surface 16 of a tightening sheet, so that the pipe wall of the plastic composite pipe is uniformly and inwardly protruded after being radially tightened by extrusion, and the formed concave-convex matching structure is favorable for greatly improving the bonding strength between the inner wall of the plastic composite pipe and an inner support connecting pipe 20 and can greatly improve the anti-pulling performance of connection; and (II) tensile reinforcing inclined sinking surfaces are arranged on two sides of the concave ring groove 21, so that the force application of the contraction of the pipe wall of the plastic composite pipe towards the elastic sealing ring 50 in the axial direction is more uniform, wide and solid, the inward convex part of the pipe wall can form a gentle but not sharp physical structure, the optimal surface contact (but not point contact) with the elastic sealing ring can be easily formed, and a better sealing effect can be achieved.
As a preferred embodiment, the tightening pieces 10 are provided in four pieces, each tightening piece is provided with five outward grooves 12 and six inward grooves 11, one outward groove 12 is provided at an axial center line position of the tightening piece and serves as a positioning long groove 13, and the tightening plate 40 is correspondingly provided with four positioning protrusions 42 corresponding to the four positioning long grooves of the four tightening pieces. Of course, in the application the utility model discloses during the scheme, can adjust the optimization to above-mentioned quantity according to particular case.
In order to facilitate the screwing of the tensioning bolt 60 and the uniform application of force at both ends, the axial bolt hole on the tightening plate 40 is designed as a bolt countersunk hole.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A deformable plastic composite pipe end opening and flange end opening butt joint component, axial bolt holes are evenly distributed on the outer edge of a flange, the outer wall of the end opening of the plastic composite pipe is a flat wall, and the component is characterized by comprising a group of elastic sealing rings, an annular sealing sheet and a group of elastic sealing rings,
the maximum outer diameter of the pipe body of the inner support connecting pipe is matched with the inner diameter of the plastic composite pipe, a circle of connecting end ring is radially extended out of one end part of the pipe body, and the annular sealing sheet is arranged between the connecting end ring and the flange butt joint port; the pipe body of the internal-bracing connecting pipe is also provided with an inward-concave ring groove for sleeving an elastic sealing ring, and the maximum external diameter formed after the elastic sealing ring is sleeved in the inward-concave ring groove is smaller than the internal diameter of the plastic composite pipe;
the tightening disc is of an annular structure, the inner wall of the tightening disc is provided with a taper, and axial bolt holes are uniformly distributed on the tightening disc and correspond to the bolt holes on the flange;
the plurality of tension bolts are matched with the axial bolt holes to realize that the tightening plate moves towards the flange;
the outer surface of each tightening piece is provided with a wedge-shaped structure matched with the taper of the inner wall of the tightening disc, the length of each tightening piece can cover an elastic sealing ring sleeved on the inner support guide connecting pipe in a sleeving manner, and the cross section of each tightening piece is in an arc shape;
during installation, the internal-supporting connecting pipe sleeved with the elastic sealing ring is inserted into the plastic composite pipe until the connecting end ring butts against the port of the plastic composite pipe, the plurality of tightening pieces uniformly surround the outer wall of the port of the coated plastic composite pipe, the tightening disc is sleeved on the tightening piece in a ring mode, the tightening disc moves towards the flange under the action of the axial force of the bolt to drive the connecting end ring to axially extrude the annular sealing sheet, and the plastic composite pipe is uniformly extruded through the tightening piece to be radially contracted and deformed so as to extrude the elastic sealing ring to deform.
2. The docking member as claimed in claim 1, wherein the inner surface of the tightening sheet has a ring protrusion at a position corresponding to the elastic seal ring installation position; during assembly, the recessed ring groove, the elastic sealing ring and the ring protrusion are located at the same cross-sectional position.
3. The butt joint member according to claim 2, wherein a plurality of inward grooves parallel to each other are uniformly formed in the inner surface of the tightening piece in the axial direction, outward grooves are formed in the middle of the outer surface portion of the tightening piece corresponding to adjacent inward grooves, and the outward grooves and the inward grooves are spaced from each other and parallel to each other.
4. The docking member according to claim 3, wherein the tightening piece further has a positioning slot formed on an outer surface thereof, the tightening plate has a plurality of positioning protrusions uniformly distributed in a radial direction, each positioning protrusion is matched with the corresponding positioning slot of the tightening piece, and the positioning protrusion can move axially in the positioning slot.
5. The docking member of claim 4 wherein the inner surface of the grip tab has a friction enhancing structure.
6. The docking member according to claim 5, wherein the tightening pieces are four, each tightening piece is provided with five outward grooves and six inward grooves, one outward groove is formed on an axial center line of the tightening piece and serves as a positioning long groove, and the tightening plate is correspondingly provided with four positioning protrusions corresponding to the four positioning long grooves.
7. A joint member according to claim 3, wherein said inner concave groove has a tensile enhancement inclined depressed surface on both sides thereof, and an inner surface of said tightening tab has a matching tensile enhancement inclined convex surface at a portion corresponding to the tensile enhancement inclined depressed surface.
8. A docking member according to any one of claims 1 to 7 wherein said internal stay conduit is water-swollen formed of stainless steel tube.
9. A docking member according to any one of claims 1 to 7 wherein the axial bolt holes on the tightening plate are bolt countersunk holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220375730.XU CN217108728U (en) | 2022-02-23 | 2022-02-23 | Butt joint component for deformable plastic composite pipe port and flange port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220375730.XU CN217108728U (en) | 2022-02-23 | 2022-02-23 | Butt joint component for deformable plastic composite pipe port and flange port |
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| Publication Number | Publication Date |
|---|---|
| CN217108728U true CN217108728U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220375730.XU Active CN217108728U (en) | 2022-02-23 | 2022-02-23 | Butt joint component for deformable plastic composite pipe port and flange port |
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| CN (1) | CN217108728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115608900A (en) * | 2022-12-16 | 2023-01-17 | 太原理工大学 | Metal clad material wave-flat radial forging composite equipment and method thereof |
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- 2022-02-23 CN CN202220375730.XU patent/CN217108728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115608900A (en) * | 2022-12-16 | 2023-01-17 | 太原理工大学 | Metal clad material wave-flat radial forging composite equipment and method thereof |
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