CN113146145A - Welding-free steel pipe connecting process - Google Patents
Welding-free steel pipe connecting process Download PDFInfo
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- CN113146145A CN113146145A CN202110127243.1A CN202110127243A CN113146145A CN 113146145 A CN113146145 A CN 113146145A CN 202110127243 A CN202110127243 A CN 202110127243A CN 113146145 A CN113146145 A CN 113146145A
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- Prior art keywords
- steel pipe
- welding
- rubber block
- limiting groove
- concave limiting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/004—Shrunk pipe-joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/10—Adhesive or cemented joints
- F16L13/11—Adhesive or cemented joints using materials which fill the space between parts of a joint before hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a welding-free steel pipe connecting process, belonging to the field of steel pipes, wherein steel pipes are connected end to end in an extrusion way through extrusion matching of an outward convex rubber block and an inward concave limiting groove, the outward convex rubber block is partially melted and flows to a hemispherical snap ring to form a sealing layer by matching with heating operation, the sealing effect is effectively ensured, compared with the prior art, the welding operation is not needed, the connecting efficiency is higher, under the action of the uneven inward concave limiting groove, on one hand, the area of the outward convex rubber block in extrusion contact with the inward concave limiting groove is increased, the extrusion strength of the outward convex rubber block and the inward concave limiting groove is enhanced, on the other hand, a sharp prick penetrates a storage capsule to overflow metal quick-drying rubber, the connecting strength of the outward convex rubber block and the inward concave limiting groove is effectively enhanced, and part of the sharp prick into the outward convex rubber block, the outward convex rubber block is effectively limited from moving in the inward concave limiting groove, to sum up, the connection strength between two steel pipes is effectively guaranteed through multiple functions.
Description
Technical Field
The invention relates to the field of steel pipes, in particular to a welding-free steel pipe connecting process.
Background
Steel pipes are steel with a hollow cross section whose length is much greater than the diameter or circumference. The steel pipe is divided into round, square, rectangular and special-shaped steel pipes according to the shape of the cross section; the steel pipe is divided into a carbon structural steel pipe, a low-alloy structural steel pipe, an alloy steel pipe and a composite steel pipe according to the material quality; the steel pipes are divided into steel pipes for conveying pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment and the like according to the application; the production process includes seamless steel pipe and welded steel pipe, the seamless steel pipe includes hot rolling and cold rolling (drawing), and the welded steel pipe includes straight seam welded steel pipe and spiral seam welded steel pipe.
Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, but also are economical steels. The steel pipe is used to manufacture building structure net rack, support and mechanical support, and this can reduce weight, save metal by 20-40% and realize industrial mechanical construction. The steel pipe is used for manufacturing the highway bridge, so that steel can be saved, the construction is simplified, the area of a coating protective layer can be greatly reduced, and the investment and the maintenance cost are saved.
When carrying out long distance liquid transportation, the steel pipe often needs concatenation extension transport route each other, generally uses the welded mode among the prior art, connects two steel pipes, but this kind of mode operation is comparatively loaded down with trivial details relatively, and efficiency is lower, influences holistic efficiency of laying.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a welding-free steel pipe connecting process, which ensures that steel pipes are connected end to end in a pressing way through the pressing fit of an outward convex rubber block and an inward concave limiting groove, ensures that the outward convex rubber block is partially melted and flows to penetrate into a hemispherical snap ring to form a sealing layer by matching with the heating operation, effectively ensures the sealing effect, has higher connecting efficiency compared with the prior art without welding operation, increases the pressing contact area of the outward convex rubber block and the inward concave limiting groove and enhances the pressing strength of the outward convex rubber block and the inward concave limiting groove under the action of the uneven inward concave limiting groove, punctures a sharp point to break a storage capsule to overflow metal quick-drying rubber, effectively strengthens the connecting strength of the outward convex rubber block and the inward concave limiting groove, punctures part of the sharp point into the outward convex rubber block, effectively limits the outward convex rubber block to be difficult to move in the inward concave limiting groove, to sum up, the connection strength between two steel pipes is effectively guaranteed through multiple functions.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A welding-free steel pipe connecting process comprises the following steps:
s1, aligning the tail of one steel tube with the end of another steel tube;
s2, twisting one of the steel pipes to adjust the position, enabling the outer convex rubber block at the tail part to be staggered with the inner concave limiting groove at the end part, and then inserting the tail part into the end part until the tail part stops being inserted;
s3, rotating the tail part again to clamp the convex rubber block into the concave limiting groove;
and S4, heating the outer wall of the end part, rotating while heating, finishing heating after 2-3min, cooling, and filling glass cement into the gap between the end part and the tail part to complete connection.
Further, the heating temperature in the step S4 is 105-120 ℃, the elastic bump can be melted by heating to enable the elastic bump to have fluidity, so that the elastic bump overflows from the embedded groove to a position between the hemispherical snap ring and the inner wall of the end part of the steel pipe, a sealing layer is formed at the position, and the sealing effect of the joint of the steel pipe is effectively ensured by matching with the glass cement, and the steel pipe is erected during heating, wherein the erecting angle is not less than 60 degrees, so that the melted elastic bump flows towards the hemispherical snap ring conveniently.
Further, when heating in S4, a hot air blower is used to blow hot air into the gap between the tail portion and the end portion, so that the hot air can assist the elastic bumps to melt faster on the one hand, and on the other hand, the molten hot melt adhesive is effectively pushed to move toward the hemispherical snap ring, thereby accelerating the formation of the sealing layer.
Further, the indent limiting groove all is provided with a plurality ofly at steel pipe tip and evagination gluey piece at the steel pipe afterbody, and the distance between two indent limiting grooves is the same with the distance between two evagination gluey pieces, makes the two match each other, can the joint together to effectively restrict the intensity after two steel pipes link together, make the two be difficult for dropping each other.
Further, indent limiting groove inner wall is uneven structure, when the evagination is glued the piece and is entered into the indent limiting groove, with unevenness's part extrusion contact, thereby show the intensity that improves evagination and glue piece and indent limiting groove department, make this department difficult not hard up, effectively guarantee the joint strength of steel pipe, and a plurality of evenly distributed's of indent limiting groove inner wall fixedly connected with point thorn, when the evagination is glued the piece and is entered into the indent limiting groove, the point thorn can puncture and store up the capsule, make its inside metal fast dry glue spill over, and then glue piece and indent limiting groove department to the evagination, further improve the joint strength between the two, behind the evagination glue piece card income indent limiting groove, in part point pricks into gluey becomes the layer, can make the evagination glue the piece including the difficult not hard up of emergence position of concave limiting groove.
Further, steel pipe afterbody outer end fixedly connected with hemisphere snap ring, the afterbody has still dug the inner caulking groove, and the hemisphere snap ring is located the inner caulking groove left side, the inner caulking groove bottom including the outer evagination rubber block fixed connection, the evagination rubber block includes and becomes the layer and wrap up at the outer elasticity lug that becomes the layer with the inner caulking groove bottom fixed connection's glue, elasticity lug surface matches with inner caulking groove, it has a plurality of evenly distributed's infiltration liquid ball to glue the fixed embedding of the upper end on the layer that becomes.
Further, the elasticity lug is made for hot melt adhesive material, can melt when making it heat, presents certain mobility, is convenient for form the sealing washer in hemisphere snap ring department, effectively improves the intensity of two steel pipe junctions, it is made to glue the layer silicone rubber material, makes it receive and can take place certain deformation after the extrusion, and when the root inserted the tip, it can be inserted the steel pipe tip under the state of compression, makes its difficult grafting that influences the two.
Furthermore, the weeping ball comprises a mushroom-shaped top column, a bottom hemisphere fixedly connected to the lower end of the mushroom-shaped top column and a storage capsule fixedly connected between the edges of the mushroom-shaped top column and the bottom hemisphere, and the storage capsule is filled with metal quick-drying glue.
Further, store up the horizontal maximum span of capsule upper end and be 4-5 times of the horizontal span of root, store up the capsule upper end span and be not less than the weeping bulb radius, and mushroom-shaped fore-set and store up the capsule junction and be located outside the hemisphere, make the root insert the in-process of tip, weeping bulb department mainly is mushroom-shaped fore-set upper end atress, and it is difficult in the atress of inserting in-process effectively to protect and store up capsule department to effectively avoid storing up the condition emergence that capsule department cracked in advance.
Furthermore, mushroom-shaped fore-set and bottom hemisphere are the stereoplasm structure, make the evagination glue block when being extruded, ooze the liquid ball and when the tip inner wall contact, have certain bearing capacity, store up the capsule and make for elastic sealing material.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme ensures that the steel pipes are mutually connected in an extruding way by the extrusion matching of the outer convex rubber blocks and the inner concave limiting grooves, and the outer convex rubber blocks are partially melted into a flowing state by matching with the heating operation and then permeate into the hemispherical snap ring to form the sealing layer, thereby effectively ensuring the sealing effect, compared with the prior art, the method does not need welding operation and ensures higher connection efficiency, under the action of the uneven inner concave limiting groove, on one hand, the area of the outer convex rubber block in extrusion contact with the inner concave limiting groove is increased, the extrusion strength of the outer convex rubber block and the inner concave limiting groove is enhanced, on the other hand, the sharp pricks penetrate the storage capsule, so that the metal quick-drying rubber overflows, the connection strength of the outer convex rubber block and the inner concave limiting groove is effectively reinforced, and partial sharp pricks into the outer convex rubber block, effectively restricts the outer convex rubber block from moving in the inner concave limiting groove, combines multiple functions, and effectively ensures the connection strength between two steel pipes.
(2) The heating temperature in S4 is 105-120 ℃, the elastic lug can be melted by heating to enable the elastic lug to have fluidity, so that the elastic lug overflows from the embedded groove to a position between the hemispherical snap ring and the inner wall of the end part of the steel pipe, a sealing layer is formed at the position, the sealing effect of the joint of the steel pipe is effectively ensured by matching with glass cement, and the steel pipe is erected at the erecting angle not less than 60 ℃ during heating so as to facilitate the melted elastic lug to flow towards the hemispherical snap ring.
(3) When heating in S4, a hot air blower is used to blow hot air into the gap between the tail part and the end part, on one hand, the hot air can assist the elastic lug to melt more quickly, and on the other hand, the molten hot melt adhesive is effectively pushed to move towards the hemispherical snap ring, so that the formation of the sealing layer is accelerated.
(4) The indent limiting groove all is provided with a plurality ofly at steel pipe tip and evagination gluey piece at the steel pipe afterbody, and the distance between two indent limiting grooves is the same with the distance between two evagination gluey pieces, makes the two match each other, can the joint be in the same place to effectively restrict the intensity after two steel pipes link together, make the two be difficult for dropping each other.
(5) The inner wall of the concave limiting groove is of a rugged structure, when the outer convex rubber block enters the concave limiting groove, the outer convex rubber block is in extrusion contact with the rugged part, so that the strength of the outer convex rubber block and the concave limiting groove is obviously improved, the part is not easy to loosen, the connection strength of the steel pipe is effectively guaranteed, the inner wall of the concave limiting groove is fixedly connected with a plurality of uniformly distributed sharp spines, when the outer convex rubber block enters the concave limiting groove, the sharp spines can puncture the capsule, the metal inside the metal quick-drying rubber can overflow, the outer convex rubber block and the concave limiting groove are glued, the connection strength between the two is further improved, after the outer convex rubber block is clamped into the concave limiting groove, part of the sharp spines are punctured into the rubber variable layer, and the outer convex rubber block can not easily loose in the concave limiting groove.
(6) The steel pipe afterbody outer end fixedly connected with hemisphere snap ring, the afterbody has still dug the inner caulking groove, and the hemisphere snap ring is located the inner caulking groove left side, bottom in the inner caulking groove including the outer evagination rubber block fixed connection, the outer evagination rubber block include with inner caulking groove bottom end fixed connection glue become the layer and wrap up in gluing the elasticity lug that becomes the layer outward, elasticity lug surface and inner caulking groove phase-match, glue and become the fixed infiltration liquid ball that has a plurality of evenly distributed of layer upper end.
(7) Elastic bump makes for hot melt adhesive material, can melt when making it heat, presents certain mobility, is convenient for form the sealing washer in hemisphere snap ring department, effectively improves the intensity of two steel pipe junctions, and the rubber becomes layer silicon rubber material and makes, makes it can take place certain deformation after receiving the extrusion, and when the root inserted the tip, it can be inserted the steel pipe tip under the state of compression, makes its difficult grafting that influences the two.
(8) The liquid seepage ball comprises a mushroom-shaped top column, a bottom hemisphere fixedly connected to the lower end of the mushroom-shaped top column and a storage capsule fixedly connected between the edges of the mushroom-shaped top column and the bottom hemisphere, and metal quick-drying glue is filled in the storage capsule.
(9) The transverse maximum span of the upper end part of the storage capsule is 4-5 times of the transverse span of the root, the span of the upper end part of the storage capsule is not smaller than the radius of the liquid seepage ball, and the joint of the mushroom-shaped top column and the storage capsule is positioned outside the bottom hemisphere, so that the root is inserted into the end part, the liquid seepage ball is mainly stressed at the upper end part of the mushroom-shaped top column, the storage capsule is effectively protected from being stressed in the insertion process, and the condition that the storage capsule is broken in advance is effectively avoided.
(10) The mushroom-shaped top column and the bottom hemisphere are both hard structures, so that when the outer convex rubber block is extruded and the liquid seepage ball is contacted with the inner wall of the end part, the mushroom-shaped top column and the bottom hemisphere have certain bearing performance, and the storage capsule is made of an elastic sealing material.
Drawings
FIG. 1 is a schematic diagram of the main flow structure of the present invention;
FIG. 2 is a schematic structural view of a joint between two steel pipes according to the present invention;
FIG. 3 is a schematic structural view of an inner wall portion of an end portion of a steel pipe according to the present invention;
FIG. 4 is a schematic structural view of a root portion of a steel pipe according to the present invention;
FIG. 5 is a schematic view showing a part of the structure of the root of the steel pipe of the present invention when inserted into the end of the steel pipe;
FIG. 6 is a schematic structural view of a cross section of a liquid-permeable ball of the present invention.
The reference numbers in the figures illustrate:
1 hemisphere snap ring, 2 convex rubber blocks, 21 rubber variable layers, 22 elastic lugs, 3 concave limiting grooves, 4 sharp spines, 5 liquid seepage balls, 51 mushroom-shaped top columns, 52 bottom hemispheres and 53 capsules.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, in the drawing, a represents a steel pipe end, b represents a steel pipe tail, and the inner diameter of the steel pipe end is slightly larger than the outer diameter of the steel pipe tail, the welding-free steel pipe connection process comprises the following steps:
s1, aligning the tail of one steel tube with the end of another steel tube;
s2, twisting one of the steel pipes to adjust the position, enabling the outer convex rubber block 2 at the tail part to be staggered with the inner concave limiting groove 3 at the end part, and then inserting the tail part into the end part until the tail part stops being inserted;
s3, rotating the tail part again to clamp the convex rubber block into the concave limiting groove;
and S4, heating the outer wall of the end part, rotating while heating, finishing heating after 2-3min, cooling, and filling glass cement into the gap between the end part and the tail part to complete connection.
The heating temperature in S4 is 105-120 ℃, the elastic bump 22 can be melted by heating to enable the elastic bump to have fluidity, so that the elastic bump overflows from the embedded groove to a position between the hemispherical snap ring 1 and the inner wall of the end part of the steel pipe, a sealing layer is formed at the position, the sealing effect of the joint of the steel pipe is effectively ensured by matching with glass cement, the steel pipe is erected when heating, the erecting angle is not less than 60 degrees, the melted elastic bump 22 flows towards the hemispherical snap ring 1 conveniently, hot air is blown towards the gap between the tail part and the end part by using a hot air blower when heating in S4, the hot air can assist the elastic bump 22 to be melted more quickly on one hand, and on the other hand, the melted hot melt adhesive is effectively pushed to move towards the hemispherical snap ring 1, and the formation of the sealing layer is accelerated.
Referring to fig. 2, a plurality of concave limiting grooves 3 are arranged at the end part of the steel pipe and a plurality of convex rubber blocks 2 are arranged at the tail part of the steel pipe, and the distance between the two concave limiting grooves 3 is the same as the distance between the two convex rubber blocks 2, so that the two concave limiting grooves are matched with each other and can be clamped together, thereby effectively limiting the strength of the two steel pipes connected together and ensuring that the two steel pipes are not easy to fall off from each other, referring to fig. 3, the inner wall of the concave limiting groove 3 is of a rugged structure, when the convex rubber blocks 2 enter the concave limiting grooves 3, the convex rubber blocks are in pressing contact with the rugged part, thereby obviously improving the strength of the convex rubber blocks 2 and the concave limiting grooves 3, ensuring the connection strength of the steel pipes, and the inner wall of the concave limiting grooves 3 is fixedly connected with a plurality of evenly distributed sharp spines 4, when the convex rubber blocks 2 enter the concave limiting grooves 3, the sharp spines 4 can pierce the storage capsules 53, make its inside metal fast dry glue spill over, and then glue piece 2 and indent limiting groove 3 department to the evagination, further improve the joint strength between the two, behind the evagination was glued piece 2 card income indent limiting groove 3 in addition, partial spine 4 pricks into glues in becoming layer 21, can make the evagination glue piece 2 including difficult not hard up of emergence position in the indent limiting groove 3.
The outer end of the tail part of the steel pipe is fixedly connected with a hemispherical snap ring 1, the tail part is also provided with an inner embedded groove, the hemispherical snap ring 1 is positioned on the left side of the inner embedded groove, an outer convex rubber block 2 is fixedly connected with the inner bottom end of the inner embedded groove, the outer convex rubber block 2 comprises an adhesive change layer 21 fixedly connected with the inner bottom end of the inner embedded groove and an elastic lug 22 wrapped outside the adhesive change layer 21, the outer surface of the elastic lug 22 is matched with the inner embedded groove, the upper end part of the adhesive change layer 21 is fixedly embedded with a plurality of uniformly distributed liquid seepage balls 5, please refer to figures 4-5, the elastic lug 22 is made of hot melt adhesive material, can be melted when being heated and presents certain fluidity, a sealing ring is conveniently formed at the hemispherical snap ring 1, the strength of the joint of the two steel pipes is effectively improved, the adhesive change layer 21 is made of silicone rubber material, can generate certain deformation after being extruded, when the root part is inserted into the end part, the elastic lug can be inserted into the end part of the steel pipe under the compressed state, so that the plugging of the two is not easily influenced.
Referring to fig. 6, the weeping ball 5 includes a mushroom-shaped pillar 51, a bottom hemisphere 52 fixedly connected to a lower end of the mushroom-shaped pillar 51, and a storage capsule 53 fixedly connected between edges of the mushroom-shaped pillar 51 and the bottom hemisphere 52, the storage capsule 53 is filled with a metal quick-drying adhesive, a transverse maximum span of an upper end portion of the storage capsule 53 is 4-5 times of a transverse span of a root portion, a span of an upper end portion of the storage capsule 53 is not smaller than a radius of the weeping ball 5, and a connection portion of the mushroom-shaped pillar 51 and the storage capsule 53 is located outside the bottom hemisphere 52, so that in a process of inserting the root portion into the end portion, the weeping ball 5 is mainly stressed on the upper end portion of the mushroom-shaped pillar 51, thereby effectively protecting the storage capsule 53 from being stressed in an inserting process, and effectively avoiding a situation of premature rupture of the storage capsule 53, both the mushroom-shaped pillar 51 and the bottom hemisphere 52 are of a hard structure, so that when the outer convex rubber block 2 is extruded, the weeping ball 5 is in contact with an inner wall of the end portion, has certain bearing capacity, and the storage capsule 53 is made of elastic sealing material.
The steel pipes are connected with each other in an extrusion way through the extrusion matching of the outer convex rubber block 2 and the inner concave limiting groove 3, the outer convex rubber block 2 is partially melted and flows to the hemispherical snap ring 1 by matching with the heating operation, so that a sealing layer is formed between the gap of the outer convex rubber block and the inner concave limiting groove, the sealing effect is effectively ensured under the action of glass cement, compared with the prior art, the welding operation is avoided, the operation is simple, the connection efficiency is higher, under the action of the concave limiting groove 3 with the concave surface, on one hand, the area of the outer convex rubber block 2 in extrusion contact with the inner concave limiting groove 3 is increased, the extrusion strength of the outer convex rubber block and the inner concave limiting groove 3 is enhanced, on the other hand, the sharp pricks 4 prick the storage capsule 53, the metal quick-drying rubber overflows, the connection strength of the outer convex rubber block 2 and the inner concave limiting groove 3 is effectively enhanced, and the partial sharp pricks 4 prick into the outer convex rubber block 2, so that the outer convex rubber block 2 is effectively limited from not easily moving in the inner concave limiting groove 3, to sum up, the connection strength between two steel pipes is effectively guaranteed through multiple functions.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. A welding-free steel pipe connecting process is characterized in that: the method comprises the following steps:
s1, aligning the tail of one steel tube with the end of another steel tube;
s2, twisting one of the steel pipes to adjust the position, enabling the outer convex rubber block (2) at the tail part to be staggered with the inner concave limiting groove (3) at the end part, and then inserting the tail part into the end part until the tail part stops being inserted;
s3, rotating the tail part again to clamp the convex rubber block into the concave limiting groove;
and S4, heating the outer wall of the end part, rotating while heating, finishing heating after 2-3min, cooling, and filling glass cement into the gap between the end part and the tail part to complete connection.
2. The welding-free steel pipe connection process according to claim 1, wherein: the heating temperature in the S4 is 105-120 ℃, and the steel pipe is erected with the erection angle not less than 60 ℃ during heating.
3. The welding-free steel pipe connection process according to claim 2, wherein: in the heating in S4, a hot air blower is used to blow hot air into the gap between the tail and the end.
4. The welding-free steel pipe connection process according to claim 1, wherein: the inner concave limiting grooves (3) are formed in the end portions of the steel pipes and the outer convex rubber blocks (2) are arranged at the tail portions of the steel pipes, and the distance between the two inner concave limiting grooves (3) is the same as the distance between the two outer convex rubber blocks (2).
5. The welding-free steel pipe connection process according to claim 1, wherein: the inner wall of the concave limiting groove (3) is of a rugged structure, and the inner wall of the concave limiting groove (3) is fixedly connected with a plurality of evenly distributed spines (4).
6. The welding-free steel pipe connection process according to claim 1, wherein: steel pipe afterbody outer end fixedly connected with hemisphere snap ring (1), the afterbody has still dug the inner caulking groove, and hemisphere snap ring (1) is located the inner caulking groove left side, bottom in the inner caulking groove including outer protruding rubber block (2) fixed connection, outer rubber block (2) include with inner caulking groove inner bottom fixed connection glue become layer (21) and parcel in glue become layer (21) outer elastic convex block (22), elastic convex block (22) surface matches with the inner caulking groove, it has a plurality of evenly distributed's infiltration liquid ball (5) to glue to become fixed the inlaying of layer (21) upper end.
7. The welding-free steel pipe connection process according to claim 6, wherein the welding-free steel pipe connection process comprises the following steps: the elastic bump (22) is made of a hot melt adhesive material, and the adhesive change layer (21) is made of a silicon rubber material.
8. The welding-free steel pipe connection process according to claim 7, wherein: the liquid seepage ball (5) comprises a mushroom-shaped top column (51), a bottom hemisphere (52) fixedly connected to the lower end of the mushroom-shaped top column (51) and a storage capsule (53) fixedly connected between the mushroom-shaped top column (51) and the edge of the bottom hemisphere (52), wherein the storage capsule (53) is filled with metal quick-drying glue.
9. The welding-free steel pipe connection process according to claim 8, wherein: the transverse maximum span of the upper end of the storage capsule (53) is 4-5 times of the transverse span of the root, the span of the upper end of the storage capsule (53) is not smaller than the radius of the liquid seepage ball (5), and the connection part of the mushroom-shaped top column (51) and the storage capsule (53) is positioned outside the bottom hemisphere (52).
10. The welding-free steel pipe connection process according to claim 9, wherein: the mushroom-shaped top pillar (51) and the bottom hemisphere (52) are both hard structures, and the storage capsule (53) is made of elastic sealing materials.
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| CN202110127243.1A CN113146145A (en) | 2021-01-29 | 2021-01-29 | Welding-free steel pipe connecting process |
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| CN202110127243.1A CN113146145A (en) | 2021-01-29 | 2021-01-29 | Welding-free steel pipe connecting process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389953A (en) * | 2021-08-17 | 2021-09-14 | 南通市正中钢管有限公司 | Long-time-effect stainless steel pipe sealing joint |
| CN113389954A (en) * | 2021-08-18 | 2021-09-14 | 江苏钜水建设工程有限公司 | Steel pipe with integral type connection structure |
| CN114198663A (en) * | 2021-11-05 | 2022-03-18 | 东莞市翰娅汽车配件有限公司 | Wash pinup subassembly |
| CN114541580A (en) * | 2022-03-17 | 2022-05-27 | 曾顺义 | Assembled building steel structure overlap joint component |
| CN115012674A (en) * | 2022-07-04 | 2022-09-06 | 中建二局装饰工程有限公司 | Arc-shaped glass stair installation device and construction method thereof |
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| GB758535A (en) * | 1953-12-10 | 1956-10-03 | Pirelli General Cable Works | Improvements in or relating to pipe couplings |
| CH409552A (en) * | 1961-08-16 | 1966-03-15 | Montaplast Gmbh | Pipe connection and method of making the pipe connection |
| CN1916470A (en) * | 2006-04-21 | 2007-02-21 | 阎金波 | Injecting glue type connection method for sealing stainless steel pipe in thin wall |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389953A (en) * | 2021-08-17 | 2021-09-14 | 南通市正中钢管有限公司 | Long-time-effect stainless steel pipe sealing joint |
| CN113389953B (en) * | 2021-08-17 | 2021-10-15 | 南通市正中钢管有限公司 | Long-time-effect stainless steel pipe sealing joint |
| CN113389954A (en) * | 2021-08-18 | 2021-09-14 | 江苏钜水建设工程有限公司 | Steel pipe with integral type connection structure |
| CN113389954B (en) * | 2021-08-18 | 2021-10-29 | 江苏钜水建设工程有限公司 | Steel pipe with integral type connection structure |
| CN114198663A (en) * | 2021-11-05 | 2022-03-18 | 东莞市翰娅汽车配件有限公司 | Wash pinup subassembly |
| CN114198663B (en) * | 2021-11-05 | 2024-02-27 | 江门市新域新材料制造有限公司 | Wash pinup subassembly |
| CN114541580A (en) * | 2022-03-17 | 2022-05-27 | 曾顺义 | Assembled building steel structure overlap joint component |
| CN115012674A (en) * | 2022-07-04 | 2022-09-06 | 中建二局装饰工程有限公司 | Arc-shaped glass stair installation device and construction method thereof |
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Application publication date: 20210723 |