CN210770836U - Composite pipe riveting and connecting device - Google Patents
Composite pipe riveting and connecting device Download PDFInfo
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- CN210770836U CN210770836U CN201920997775.9U CN201920997775U CN210770836U CN 210770836 U CN210770836 U CN 210770836U CN 201920997775 U CN201920997775 U CN 201920997775U CN 210770836 U CN210770836 U CN 210770836U
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Abstract
The utility model discloses a composite pipe riveting and connecting device, a preparation method and application, which is characterized in that the composite pipe body comprises inner layer plastic, a special hot melt adhesive layer, a winding steel wire mesh layer and outer layer plastic, and the end part of the composite pipe body is provided with a T-shaped outward turning structure; the two composite pipe bodies rivet and fix the wound steel wire mesh layer of the pipe through the connecting piece and the two high-strength riveting baffle rings, and the two high-strength riveting baffle rings are fixedly connected through the connecting piece; the utility model has the advantages that: the steel wire mesh framework plastic composite pipe connecting device has the advantages that the steel wire mesh layer at the joint of the steel wire mesh framework plastic composite pipe can be effectively riveted, deformed and fixed, the problem that the steel wire mesh layer cannot be effectively controlled in the existing connecting mode is solved, and the risk that the ends of the steel wire mesh framework polyethylene composite pipe are connected, pulled out and turned around is avoided.
Description
The technical field is as follows:
the utility model belongs to the technical field of the compound tubular product connection structure of wire net skeleton plastics, more specifically relates to a compound tubular product rivets solid connecting device.
Background art:
the steel wire mesh framework plastic composite pipe is favored by the pipeline engineering industry due to the excellent performance, and the specified pipe pressure in the Q/0881DHB008-2018 record enterprise standard is known to reach the nominal pressure of 7.0 MPa; the existing connection modes of the steel wire mesh framework plastic composite pipe comprise electric melting sleeve connection, hot melting butt welding and capacitance sleeve connection, electric melting flange connection, hot melting socket flange connection, buckling flange connection and buckling clamp connection.
The coexistence of the connection modes has the characteristics that the working pressure is lower than or equal to 3.5Mpa, and the connection modes cannot be matched with the highest bearing pressure of the existing steel wire mesh framework plastic composite pipe, and the reason is that the steel wire layer at the connection position cannot be completely isolated from the working liquid, particularly, the steel wire layer at the connection position has larger water supply form height difference in mountainous areas, and pipelines laid on slope surfaces are influenced by the conveyed liquid and self weight in the operation process, so that the water channeling of the steel wire layer is easily caused when the high pressure is borne, and the pulling-out of the connection position is finally caused, so that the damage and the failure of the.
The national invention patent with the patent number of 201710820772.3 discloses a joint structure of a steel wire mesh framework pipe and a manufacturing method of the joint structure, wherein the joint structure of the steel wire mesh framework pipe is arranged, an annular flanging accommodating groove is formed in the end face of a joint connecting part, and an annular lapping sealing groove is formed in the side face of the flanging accommodating groove; the end part of the steel wire mesh framework pipe is provided with an annular flange which is folded outwards; the pipe fitting sleeving part is sleeved on the steel wire mesh framework pipe, the annular flanging is located in the flanging accommodating groove, and the outer edge part of the inner pipe in the annular flanging is embedded into the lapping sealing groove. The joint structure is embedded into the lap joint sealing groove through the outer edge part of the inner pipe, so that the connection strength between the joint seat and the steel wire mesh framework pipe is ensured, and the phenomenon that the joint falls off is avoided.
Although the device utilizes firm joint design, but the PE layer embedding seal groove of pipe end turn-ups fringe portion that the design of its joint design can only realize, and the steel wire layer in the middle of the tubular product does not carry out effectual control, when steel wire mesh skeleton plastics composite pipe is bearing operating pressure, will frequent alternate production harmomegathus phenomenon, this structure is fixed by using flange and bolt to carry out outside connection, but the harmomegathus of pipe wall still can arouse the inside steel wire layer of tubular product to make a round trip to move in the pipe wall, because the steel wire layer is the turn-ups only, and do not carry out effectual fixed, will cause the pipe end turn-ups to pull out from keeping off the ring in the time.
The national invention patent with patent number 201811461225.1 and patent number 201811461225.1 discloses a connecting structure of steel wire mesh skeleton pipes, which is reformed on the basis of the previous patent, the connecting structure comprises a third gasket arranged between annular flanges in two steel wire mesh skeleton pipes, the third gasket is fixedly connected with the end surfaces of inner pipes in the annular flanges through melting and cooling, so that the outer sides of the two flanges are connected together through hot melting, compared with the flange structures in the 201710820772.3 national invention patent, the flange structures are mutually independent structures, the stability is improved,
however, the problem is not substantially solved, and the thermal expansion and contraction of the steel wire framework structure is greatly different from that of the outer plastic layer, but the flanging still pulls out from the retaining ring of the joint structure along with the increase of the service life.
The invention content is as follows:
for solving above-mentioned problem, overcome prior art not enough, the utility model provides a steel wire net skeleton plastics composite pipe's high compressive strength rivets solid connected mode, has solved scurrying water, pulling out quality problems such as taking off that the steel wire layer drunkenness arouses from the true sense.
The utility model provides a concrete technical scheme of above-mentioned technical problem does: the composite pipe riveting and connecting device comprises a composite pipe body wound with steel wire mesh plastics, a high-strength riveting retaining ring and a connecting piece, and is characterized in that the composite pipe body comprises inner-layer plastics, a special hot melt adhesive layer, a wound steel wire mesh layer and outer-layer plastics, and a T-shaped outwards-turned structure is arranged at the end part of the composite pipe body;
the two composite pipe bodies are used for riveting the wound steel wire mesh layer of the pipe through the connecting piece and the two high-strength riveting retaining rings, and the two high-strength riveting retaining rings are fixedly connected through the connecting piece.
Furthermore, the high-strength riveting retaining ring is of a circular structure made of metal materials, is arranged on the outer side of the T-shaped outwards-turned structure and comprises a buckling section, a necking section, an inwards-turned cladding section and a riveting section, buckling inverted teeth are arranged in the buckling section, and the buckling inverted teeth are buckled and pressed on the pipe body after the necking is deformed, so that the high-strength riveting retaining ring is connected with the outer-layer plastic of the pipe; the necking section and the inward-turning coating section are wrapped on the outer side of the T-shaped outward-turning structure, and arc-shaped coating is carried out on the T-shaped outward-turning structure and the steel wire mesh layer wound inside the T-shaped outward-turning structure through necking deformation and inward-turning coating under the action of pressure; the riveting section is embedded with inner-layer plastic of a T-shaped outwards-turned structure of the pipe end, the winding steel wire mesh layer is subjected to press-embedding riveting, pressurization is continued to enable the end of the riveting section to be embedded into the winding steel wire mesh layer for high-strength riveting, the winding steel wire mesh layer is of a U-shaped structure after riveting, the end of the retaining ring is embedded into the U-shaped structure after the winding steel wire mesh layer deforms, the winding steel wire mesh layer is effectively fixed, and therefore the effect of preventing the winding steel wire mesh layer from being pulled out is achieved.
Further, the connecting piece comprises a sealing structure and a connecting structure.
Further, the sealing structure is a rubber sealing gasket or an electric hot melting sealing gasket.
Furthermore, the connecting piece is any one of bolt connection, buckle connection, clamp connection, winding connection or fastening connection.
A method for manufacturing a composite pipe riveting connection device is characterized in that after plastic deformation of a high-strength riveting retainer ring, a steel wire mesh layer wound inside a pipe body is effectively jacked and fixed, and the manufacturing process comprises the following steps: a buckling step, a necking step, an inward turning coating step and a high-strength riveting step;
i, buckling and pressing: reducing the necking of the buckling section of the high-strength riveting retaining ring by using a buckling mould, and reducing the diameter of the buckling inverted tooth in the retaining ring to buckle and fix the pipe;
II, necking: the riveting die is used for applying pressure to the high-strength riveting baffle ring, the straight edge of the outer edge of the high-strength riveting baffle ring is subjected to necking deformation under the action of the die cavity of the riveting die, and the T-shaped outwards-turned structure is subjected to necking fixation;
III, turning over and coating: continuously applying pressure to the high-strength riveting baffle ring by the riveting die, deforming and turning inwards to coat the necking section of the high-strength riveting baffle ring under the action of the pressure, and performing arc-shaped coating on the T-shaped outwards-turned structure;
IV, high-strength riveting: the riveting die continuously applies pressure to the high-strength riveting retaining ring, the end part of the inward-turning cladding section of the high-strength riveting retaining ring is deformed and embedded into the plastic inner layer of the T-shaped outward-turning structure, the wound steel wire mesh layer is jacked and deformed to the U-shaped structure, the end part of the retaining ring riveting section is embedded into the U-shaped structure formed by deforming the wound steel wire mesh layer in the T-shaped outward-turning structure, and the T-shaped outward-turning structure and the internally wound steel wire mesh layer are subjected to high-strength riveting.
Furthermore, the riveting die is of a circular structure, an inward concave die cavity is arranged inside the riveting die, and the die cavity is an inner arc surface processed on the end face of the circular structure.
Furthermore, the T-shaped everting structure is formed by flanging the pipe end in a heating or normal-temperature processing deformation mode.
Further, the normal temperature processing deformation adopts a top pressure leveling die, the top pressure leveling die is an independent integrated die structure, and the top pressure leveling die comprises a positioning structure, a top pressure leveling structure and an inner support structure.
The composite pipe riveting and connecting device is characterized in that the device is used for connecting steel wire mesh framework plastic composite pipes and connecting the steel wire mesh framework plastic composite pipes with valves, tee joints and elbows, and is a high-pressure and high-strength connecting mode.
The utility model has the advantages that: the steel wire mesh framework plastic composite pipe connecting device has the advantages that the steel wire mesh framework plastic composite pipe connecting part can be effectively riveted, deformed and fixed, the problem that the steel wire mesh framework plastic composite pipe end is connected and pulled out to turn around is solved, and the problem that the steel wire mesh framework plastic composite pipe end cannot be effectively controlled in the existing connecting mode is solved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the length-fixing mold and the pressing mold of the present invention;
FIG. 3 is a schematic view of the fixed-length crimping process of the present invention;
FIG. 4 is a schematic view of the flaring die and the processing process of the present invention;
FIG. 5 is a schematic view of the structural state of the rear pipe end of the flaring of the present invention;
FIG. 6 is a schematic view of the processing procedure of the top pressure leveling mold of the present invention;
FIG. 7 is a schematic view of the usage of the top pressure leveling mold of the present invention;
FIG. 8 is a schematic view of the initial state of the riveting mold and the riveting process of the present invention;
FIG. 9 is a schematic view of the riveting mold and the pressing state during the riveting process of the present invention;
FIG. 10 is a schematic view of the riveting and connecting device of the present invention; in the drawings:
in the figure, 1, a composite pipe body; 2. a "T" shaped everting structure; 3. the baffle ring is riveted with high strength; 4. a rubber packing 4; 5. a flange plate; 6. fastening a bolt; 7. fastening a nut; 8. a fixed-length die; 9. buckling and pressing the die; 10. a flaring die; 11. pressing and leveling the mould; 12. riveting the die; 13. a buckling section; 14. a necking section; 15. an inverted cladding section; 16. and (6) riveting and fixing the section.
The specific implementation mode is as follows:
specific details are set forth in the description of the invention only to provide a thorough understanding of the embodiments of the invention, but as one skilled in the art will appreciate, the practice of the invention is not limited to these details. In other instances, well-known structures and functions have not been described or shown in detail to avoid obscuring the points of the embodiments of the present invention. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method for manufacturing a composite pipe riveting and connecting device comprises the following steps: a buckling step, a necking step, an inward turning coating step and a high-strength riveting step;
1. the buckling step section comprises the step of using a buckling mould 9 to deform a buckling section 13 of the high-strength riveting retaining ring 3 in a necking way, and buckling and fixing the pipe by reducing the diameter of a buckling inverted tooth in the retaining ring.
2. The necking step section comprises the steps that a riveting die 12 is used for applying pressure to the high-strength riveting retaining ring 3, the outer edge straight edge of the high-strength riveting retaining ring 3 is subjected to necking deformation under the action of a die cavity of the riveting die 12, and the T-shaped outwards-turned structure 2 is subjected to necking fixation;
3. the inward-turning coating step comprises the steps that the riveting die 12 is utilized to continuously apply pressure to the high-strength riveting baffle ring 3, the necking section 14 of the high-strength riveting baffle ring 3 deforms under the action of the pressure and is inward-turned and coated, and the T-shaped outward-turning structure 2 is coated in an arc shape;
4. the high-strength riveting step comprises the steps that the riveting die 12 is utilized to continuously apply pressure to the high-strength riveting retaining ring 3, the end part of the inward-turning cladding section 15 of the high-strength riveting retaining ring 3 is deformed and embedded into the T-shaped outward-turning structure 2, the wound steel wire mesh layer is jacked and deformed to the U-shaped structure, the end part of the retaining ring riveting section 16 is embedded into the U-shaped structure formed by the T-shaped outward-turning structure 2 and the wound steel wire mesh layer, and the T-shaped outward-turning structure 2 and the wound steel wire mesh layer inside are subjected to high-strength riveting.
The riveting die 12 is of a circular structure, an inward concave die cavity is arranged in the riveting die, and the die cavity structure is an inner arc surface processed on the end face of the circular structure.
In order to show more directly perceived the utility model discloses a high strength is riveted and is connected the advantage, carries out further detailed description:
specific example 1:
the T-shaped everting structure 2 is prepared by a normal-temperature processing deformation process by utilizing a flaring die 10 and a jacking and leveling die 11;
2. the T-shaped outward-turning structures 2 of the two composite pipe bodies 1 are subjected to plastic deformation through high-strength riveting retaining rings, and then the T-shaped outward-turning structures at the pipe ends and the steel wire mesh layers wound inside the T-shaped outward-turning structures are riveted;
3. the riveted connecting device is fixedly connected through a connecting piece which is arranged as a bolt, and is sealed by a rubber sealing gasket 4;
specific example 2:
the T-shaped everting structure 2 is prepared by a high-temperature processing deformation process of a conventional process;
2. the T-shaped outwards-turned structures 2 of the two composite pipe bodies 1 rivet and fix the wound steel wire mesh layers of the pipes through high-strength riveting retaining rings,
3. the riveted connecting device is fixedly connected through a connecting piece which is arranged as a bolt, and is sealed by a rubber sealing gasket 4;
specific example 3:
the T-shaped outward-turning structure 2 is prepared by a normal-temperature processing deformation process by utilizing a jacking leveling die 11;
2. the T-shaped outward-turning structures 2 of the two composite pipe bodies 1 are subjected to plastic deformation through high-strength riveting retaining rings, and then the T-shaped outward-turning structures at the pipe ends and the steel wire mesh layers wound inside the T-shaped outward-turning structures are riveted;
3. the riveted connecting device is fixedly connected through a connecting piece which is arranged into a bolt, and is sealed by hot melting;
specific example 4:
the T-shaped outward-turning structure 2 is prepared by a normal-temperature processing deformation process by utilizing a jacking leveling die 11;
2. the T-shaped outward-turning structures 2 of the two composite pipe bodies 1 are subjected to plastic deformation through high-strength riveting retaining rings, and then the T-shaped outward-turning structures at the pipe ends and the steel wire mesh layers wound inside the T-shaped outward-turning structures are riveted;
3. the riveted connecting device is connected and fixed through a connecting piece which is arranged into a hoop, and is sealed by utilizing a hot melting mode.
The specific operation steps are as follows:
specific example 1:
the steel wire mesh framework plastic composite pipe riveting and connecting device comprises a steel wire mesh framework plastic composite pipe body 1, a high-strength riveting retaining ring 3 and a connecting piece, wherein the composite pipe body 1 comprises a polyethylene inner layer, a bonding resin layer, a wound steel wire mesh layer and a polyethylene outer layer, and a T-shaped outwards-turned structure 2 is arranged at the end part of the composite pipe body 1;
the T-shaped outward-turning structures 2 of the two composite pipe bodies 1 are subjected to plastic deformation through high-strength riveting retaining rings, the T-shaped outward-turning structures at the pipe ends and the steel wire mesh layers wound inside the T-shaped outward-turning structures are riveted, and the two pipe bodies are fixedly connected through the connecting piece;
the high-strength riveting baffle ring 3 is of a metal structure, is arranged on the outer side of the T-shaped outward-turning structure 2 and comprises a buckling section 13, a necking section 14, an inward-turning coating section 15 and a riveting section 16, the necking section 14 is wrapped on the outer side of the T-shaped outward-turning structure, the T-shaped outward-turning structure is subjected to arc-shaped coating through necking deformation and inward-turning coating under the action of pressure, and the riveting section 16 is embedded into a steel wire layer which is deformed into a U-shaped structure through force application and is fixed through riveting connection.
The connecting piece comprises a sealing structure and a connecting structure; the sealing structure is a rubber sealing gasket 4, and the connecting piece is connected by a bolt.
The T-shaped everting structure 2 is prepared by flanging a flaring die 10 and a pressing and leveling die 11 under the condition of no heating and normal temperature. The flaring die 10 and the jacking and leveling die 11 are independent integrated structures, the flaring die 10 is of a cone structure, and the jacking and leveling die 11 is of a plurality of cylinder combined structures arranged along the axis direction.
The method comprises the following specific steps: firstly, after a steel wire mesh framework plastic composite pipe 1 to be processed and a high-strength riveting retaining ring 3 are assembled, the assembly is placed into a buckling and pressing mold 9, a fixed-length mold 8 is used for limiting the extending size of a pipe end, an oil press is used for applying pressure to the buckling and pressing mold 9, so that a buckling and pressing section 13 of the high-strength riveting retaining ring is contracted and deformed, the diameter of a buckling and pressing inverted tooth in the retaining ring is reduced, the pipe is buckled and fixed, and the process is as shown in FIG. 4, so that the structure as shown in FIG. 5 is obtained;
then, flaring the buckled pipe end with fixed length to a bell mouth shape by using a flaring die 10, wherein the process is as shown in figure 4, and the structure as shown in figure 5 is obtained;
finally, performing T-shaped jacking and leveling on the flared pipe end by using a jacking and leveling die 11, wherein the process is as shown in FIG. 6, and the structure as shown in FIG. 7 is obtained;
the high-strength riveting structure is prepared by applying pressure to the high-strength riveting retainer ring by using a riveting die 12 to deform the high-strength riveting retainer ring and wrapping and riveting the T-shaped outwards-turned structure 2. The riveting die 12 is of an integrated die cavity structure, and the high-strength riveting retainer ring 3 is of a metal circular ring structure and is arranged on the outer side of the T-shaped outwards-turned structure 2.
The method comprises the following specific steps: and (3) applying pressure to the high-strength riveting retaining ring 3 by using a riveting die 12 to enable the outer edge straight edge of the high-strength riveting retaining ring 3 to sequentially pass through the processes of a buckling step, a necking step, an inward-turning coating step and a high-strength riveting step under the action of a riveting die cavity, so that the end part of the high-strength riveting retaining ring is deformed and embedded into the T-shaped outward-turning structure 2, the wound steel wire mesh layer is pressed and deformed to the U shape for high-strength riveting, the process is shown in figure 8, figure 9, and finally the manufacturing of the high-strength riveting connecting device is completed, and the structure shown in figure 10 is obtained.
The high-strength riveting and connecting device can be used for connecting the steel wire mesh framework plastic composite pipes in front and connecting the steel wire mesh framework plastic composite pipes with valves, tee joints and elbows.
Specific example 2:
the difference from the example 1 is that the "normal temperature deformation mode" of the "T" type eversion structure 2 in the example 1 is replaced by the high temperature deformation mode;
specific example 3:
the same as example 1, except that "the seal structure is the rubber packing 4" in example 1 was replaced with the hot melt joining;
the hot melting connection comprises the following specific steps:
the difference from embodiment 1 is that the sealing gasket in the sealing structure in embodiment 1 is changed into a hot-melt connection mode, the hot-melt connection mode is that an electric heating fuse or an electric heating fuse rubber pad is placed between the end faces of the two composite pipe bodies 1, and after the two pipes are connected, the electric heating fuse is electrified to generate heat, so that the two end faces of the pipe are hot-melted together to achieve the effect of hot-melt sealing.
Specific example 4:
the difference from embodiment 3 is that "bolt connection" in embodiment 3 is replaced with clamp connection;
as is clear from the above embodiments: although the devices described in patent nos. 201710820772.3 and 201811461225.1 utilize a stable joint structure, the PE layer at the outer edge of the flange of the pipe end can only be embedded into the sealing groove by the design of the joint structure, and the steel wire net layer wound in the middle of the pipe is not effectively controlled, when the steel wire net framework plastic composite pipe bears the working pressure, the expansion and contraction phenomena are frequently and alternately generated, although the structure uses flanges and bolts to connect and fix the outside, the expansion and contraction of the pipe wall can still cause the steel wire net layer wound in the pipe to move back and forth in the pipe wall, because the steel wire net layer is only a flange, and is not effectively fixed, the flange of the pipe end can be pulled out of the retaining ring in time.
In summary, the following steps: the utility model discloses an use high strength riveting connection structure, carry out effectual riveting with the winding steel wire stratum reticulare of the compound union coupling of steel wire framework plastics, perfect realization the tubular product outer wall, the structure of turning up of pipe end "T" type and the effectual fixing of inside winding steel wire stratum reticulare, tubular product is when bearing operating pressure and frequent harmomegathus like this, the condition of the drunkenness of winding steel wire stratum reticulare inside the pipe wall to make a round trip just can not appear, thereby solved the unable difficult problem that will twine steel wire stratum reticulare effective control of connected mode now, the risk of pulling out the turn-around of steel wire framework plastics compound pipe end connection has been avoided.
Claims (4)
1. A composite pipe riveting and connecting device comprises a composite pipe body, a high-strength riveting retaining ring and a connecting piece, and is characterized in that the composite pipe body comprises inner-layer plastic, a special hot melt adhesive layer, a wound steel wire mesh layer and outer-layer plastic, and a T-shaped outwards-turned structure is arranged at the end part of the composite pipe body;
the T-shaped outwards-turned structures of the two composite pipe bodies rivet and fix the wound steel wire mesh layers of the pipes through the high-strength riveting baffle rings, and the two high-strength riveting baffle rings are fixedly connected through the connecting piece;
the high-strength riveting retaining ring is of a circular structure made of metal materials, is arranged on the outer side of the T-shaped outward-turning structure and comprises a buckling section, a necking section, an inward-turning cladding section and a riveting section, and buckling inverted teeth which are buckled on the pipe body after being deformed through necking are arranged in the buckling section to realize plastic connection between the high-strength riveting retaining ring and the outer layer of the pipe; the necking section and the inward-turning cladding section are wrapped on the outer side of the T-shaped outward-turning structure; the riveting section is arranged to be embedded into inner layer plastic of a T-shaped pipe end outwards-turning structure, and a winding steel wire mesh layer is pressed, embedded and riveted.
2. The composite pipe riveting connection device according to claim 1, wherein the connection piece comprises a sealing structure and a connection structure.
3. The composite pipe riveting connection device according to claim 2, wherein the sealing structure is a rubber gasket.
4. The composite pipe riveting connection device of claim 2, wherein the connection piece is any one of bolt connection, buckle connection, clamp connection, winding connection or fastening connection.
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| CN201920997775.9U CN210770836U (en) | 2019-06-29 | 2019-06-29 | Composite pipe riveting and connecting device |
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| CN201920997775.9U CN210770836U (en) | 2019-06-29 | 2019-06-29 | Composite pipe riveting and connecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185861A (en) * | 2019-06-29 | 2019-08-30 | 山东东宏管业股份有限公司 | A kind of composite pipe rivet clasp attachment device and preparation method and application |
| CN112431976A (en) * | 2020-12-01 | 2021-03-02 | 菏泽三垒塑业股份有限公司 | Composite pipe riveting and connecting device |
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2019
- 2019-06-29 CN CN201920997775.9U patent/CN210770836U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185861A (en) * | 2019-06-29 | 2019-08-30 | 山东东宏管业股份有限公司 | A kind of composite pipe rivet clasp attachment device and preparation method and application |
| CN112431976A (en) * | 2020-12-01 | 2021-03-02 | 菏泽三垒塑业股份有限公司 | Composite pipe riveting and connecting device |
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