CN209524205U - A kind of spigot-and-socket steel push pipe connector - Google Patents

Abstract

The utility model relates to a kind of spigot-and-socket steel push pipe connectors, bellmouth connector and socket connection including being respectively welded at steel pipe tube coupling both ends, socket connection inner surface is smooth and internal diameter is identical as steel pipe tube coupling, the multiple tapered ridges of appearance EDS maps of socket connection, the multiple tapered ridge form the first zigzag joint face in socket connection inner surface；Bellmouth connector smooth outer surface and outer diameter is identical as steel pipe tube coupling, the inner surface of bellmouth connector are spaced apart the multiple tapered ridges matched with socket connection, and the multiple tapered ridge forms the second zigzag joint face in bellmouth connector outer surface.The technical characterstic of the utility model is: 1, the welding of the interface is completed in factory, and jacking construction scene is transported to after the completion of welding and is directly assembled, can preferably guarantee the quality of welding, and the construction period at the scene of can reducing.2, after the completion of the interface, interface internal diameter and outer diameter and smooth degree are substantially consistent with standard tube coupling, are convenient for jacking construction.

Description

A kind of spigot-and-socket steel push pipe connector

Technical field:

The utility model patent is a kind of spigot-and-socket steel push pipe connector, can be used for the company of aqueduct and other conveyance conduits It connects.

Background technique:

Currently, the enlarging of China's water conveyance pipeline project, reparation and replacement are frequently necessary to especially exist using trenchless technology City and environmentally sensitive area, non-excavating construction process do not need large area excavated pavement, can be by social influence and environment shadow Sound minimizes.Compared to traditional digging mode, there are many advantages for no-dig technique mode, and not with technical level and mechanical equipment Break and develops and become more cost effective.

Push pipe is one kind of the most common aqueduct trenchless technology, and the selection of tubing can be mainly from following aspects Selection: mechanical property, interface connection type and performance, service life, difficulty of processing, difficulty of construction, transport difficulty.There are commonly Steel pipe, ductile iron pipe, Prestressed concrete cylinder pipe.

Traditional steel push pipe generally uses the connection type of site welding, although although the mechanical property of steel pipe is preferable, Tubing convenient transportation, but Steel Welded Joint can expend a large amount of human and material resources, financial resources and time cost, the quality of welding Difficult to control, the anti-corrosion way service life not up to standard that also will be greatly reduced tubing, and since connector is rigidity, flexible leeway Smaller, i.e., the leeway that can be rectified a deviation in construction is smaller.

Since traditional steel push pipe has the above deficiency, with the raising of engine request, occurs novel spheroidal graphite casting in the market Iron push pipe and PCCP push pipe.Novel spheroidal graphite cast-iron push pipe need to increase reinforced concrete in outer layer since interface is to extend out bell and spigot Native surrounding layer is consistent to guarantee entire body diameter, and that there are intensity is lower for the tubing, substance is big, tube coupling is short, interface is more, surrounding layer reinforcing bar The problems such as concrete quality is difficult to guarantee, large diameter pipeline (>=1000) cost is high, rigid connector docking difficulty is big.And PCCP Pipe equally exists above-mentioned similar problems, and in addition PCCP pipe is used for for many years in the U.S., but since nineteen ninety, the U.S. PCCP pipeline is frequently occurred since high tensile steel wire is broken caused pipe explosion accident, and U.S.'s regulatory authorities are proposed in this problem Before solution, pressure pipeline is not recommended to select PCCP pipe.

Compared to the country, the steel pipe of external bayonet joint is used for more than 60 years, for the spigot-and-socket of pipe-jacking project Joint steel pipe had also been used more than 20 years, equal operational excellence.In recent years, research of the China for the spigot-and-socket joint of steel pipe It is at the early-stage, but in small-scale test and improve the stage, also without corresponding design specification and standard, and it is directed to The research of spigot-and-socket steel push pipe is even more fewer and fewer.

In conclusion it is domestic it is necessary to carry out the application study to novel spigot-and-socket steel push pipe, and following skill should be met Art requirement:

1, the live concatenation of tube coupling connector should facilitate, efficiently.

2, connector, which is connected under the various load cases combinations such as external water and soil load, interior water ballast(ing), push pipe thrust, should be able to meet by force The design requirements such as degree, deformation, watertightness.

3, the jointing between adjacent tube coupling need to have a smooth and continuous outer surface, to reduce in jack-in process The gap between frictional force on tube coupling outer surface, and the outer surface and drill hole inner wall of reduction tube coupling is acted on, to avoid push pipe Obvious surface subsidence occurs above route, this is also the basic demand of trenchless technology.

4, the jointing between adjacent tube coupling need to have a smooth and continuous inner surface, to avoid fluid in pipeline Middle generation turbulent flow or cavitation phenomenon.

5, the jointing between adjacent tube coupling need to meet certain watertightness, should specifically meet design requirement.

6, the jointing between adjacent tube coupling should be able to reach certain bending angle, and can transmit between adjacent tubular segments Moment of flexure, should specifically meet design requirement.

Summary of the invention:

The purpose of the utility model is to overcome the deficiencies of current various push pipes, provide a kind of safe, economical, applicable, high The spigot-and-socket steel push pipe connector of effect.

The utility model is to solve a kind of above-mentioned technical problem: spigot-and-socket steel push pipe connector by the following technical programs, Bellmouth connector and socket connection including being respectively welded at steel pipe tube coupling both ends, it is characterised in that socket connection inner surface Smooth and internal diameter is identical as steel pipe tube coupling, the multiple tapered ridges of appearance EDS maps of socket connection, and the multiple tapered ridge is being inserted Mouth connector inner surface forms the first zigzag joint face；Bellmouth connector smooth outer surface and outer diameter is identical as steel pipe tube coupling, The inner surface of bellmouth connector is spaced apart the multiple tapered ridges matched with socket connection, and the multiple tapered ridge is in bellmouth Connector outer surface forms the second zigzag joint face.

Further, when two neighboring steel pipe tube coupling connects, the socket connection of a steel pipe tube coupling is pressed into another steel In the bellmouth connector of pipe tube coupling, to complete the connection of two sections of steel pipes, each tapered ridge of bellmouth connector and socket connection Tapered ridge is bonded to each other, to guarantee that the steel pipe tube coupling connecting node can transmit certain axial compressive force, moment of flexure.

Further, the inner surface of the outer surface of the socket connection and bellmouth connector smears sealing material or setting Sealing joint strip has reached the effect of sealing.

Further, the socket connection includes the socket welding ends for joint steel pipe tube coupling, and for connecting The socket end of another steel pipe tube coupling, the first zigzag joint face are located at socket end, and the first zigzag joint face includes Several sections are disconnected, and along socket welding ends to socket extreme direction, disconnected each section includes sequentially connected annular concave plane, annular vertical Face, convex annular plane, annular slope, and connection end annular is recessed flat after the annular slope for end of breaking near socket end segment Face；And along socket welding ends to socket extreme direction, save disconnected annular concave plane, annular vertical surface, convex annular plane section half Diameter is gradually reduced；

The bellmouth connector includes the bellmouth welding ends for joint steel pipe tube coupling, and for connecting another steel pipe The female end of section, the second zigzag joint face are located at female end, and the second zigzag joint face includes that several sections are disconnected, Along bellmouth welding ends to bellmouth extreme direction, each section is disconnected including sequentially connected annular slope, annular concave plane, annular vertical Face, convex annular plane, and recessed flat near the disconnected starting point setting of bellmouth welding end segment and the end annular of socket connection The starting point convex annular plane that face matches, and along bellmouth welding ends to bellmouth extreme direction, save disconnected annular concave plane, annular is hung down It faces directly, the section radius of convex annular plane is gradually increased.

Further, socket annular solder inclined-plane, socket annular welds are cut on the outside of the socket welding ends of socket connection It connects inclined-plane and passes through solder design to the end of steel pipe tube coupling；Bellmouth annular welds are cut on the outside of the bellmouth welding ends of bellmouth connector Inclined-plane is connect, bellmouth annular solder inclined-plane passes through solder design to the end of steel pipe tube coupling.

The technical characteristics of the utility model is

1, this interface is made of bellmouth connector and socket connection component.Bellmouth connector and socket connection can be in factories Steel pipe tube coupling to be spliced together both ends are welded to, can be directly assembled at the scene after being transported to scene, or combine push pipe jacking device Spliced, reduces the artificial of site welding work generation, equipment cost and time cost, can preferably guarantee the matter of welding Amount, and the construction period at the scene of can reducing.

2, the socket connection inner surface in this interface is smooth and internal diameter is the same as steel pipe tube coupling, bellmouth connector smooth outer surface And outer diameter is with steel pipe tube coupling, after the completion of bellmouth connector and socket connection splicing, that is, formed inner and outer surfaces it is smooth and Inside and outside diameter jointing identical with steel pipe tube coupling.After the completion of the interface, interface internal diameter and outer diameter and smooth degree are basic It is consistent with standard tube coupling, it is convenient for jacking construction.

3, before connector is assembled, sealing material (such as organic sealed silicone) is applied to the socket connection The inner surface of outer surface and bellmouth connector, or setting sealing joint strip, can not only play the lubricating action during assembly, but also can be Sealing function is played after sealing material solidification, and according to design requirement, examination water test is carried out before jacking, it is ensured that watertightness.

4, after the completion of bell socket connection, each tapered ridge of bellmouth connector and the tapered ridge of socket connection are answered It is bonded to each other, to guarantee that the node can transmit certain axial compressive force, moment of flexure.

Detailed description of the invention:

Fig. 1 is the perspective view of the utility model spigot-and-socket joint operating environment；

Fig. 2 is the A-A partial sectional view of the utility model spigot-and-socket joint in Fig. 1；

Fig. 3 is the partial sectional view after the completion of the utility model spigot-and-socket joint is assembled.

It include: the 1, first steel pipe tube coupling, the 2, second steel pipe tube coupling, 3, socket connection, 4, bellmouth connector, 5, top in figure Pipe hole, 6, upper pipe working well, the 7, first cylindrical outer surface, the 8, first cylindrical form interior surface, 9, bellmouth connector cylinder Outer surface, 10, bellmouth connector cylindrical form interior surface, the 11, first zigzag joint face, the 12, second zigzag joint face, 13, Second zigzag joint face right side, the 14, first zigzag joint face right side, the 15, second zigzag joint face left side, 16, the first zigzag joint face left side, 17, socket welding ends, the 18, first steel pipe tube coupling end, 19, socket annular solder it is oblique Face, 20, weld seam, 21, bellmouth welding ends, the 22, second steel pipe tube coupling end, 23, bellmouth annular solder inclined-plane, 24, weld seam, 25, The first annular concave plane of socket connection, 35, the annular concave plane of socket connection second, 45, socket connection third annular it is recessed Plane, 55, socket connection end annular concave plane, 26, the annular first convex flat face of socket connection, 36, socket connection the Second ring convex flat face, 46, socket connection third convex annular plane, 27, the first annular vertical plane of socket connection, 37, socket Connector ring the second shape vertical plane, 47, socket connection third annular vertical surface, 28, the first annular inclined-plane of socket connection, 38, the second annular slope of socket connection, 48, socket connection third annular slope, 31, bellmouth connector starting point convex annular Plane, 41, the first annular convex flat face of bellmouth connector, 51, bellmouth connector the second convex annular plane, 61, bellmouth connector Three annular convex flat faces, 32, the first annular inclined-plane of bellmouth connector, 42, the second annular slope of bellmouth connector, 52, bellmouth connection Part third annular slope, 33, the first annular concave plane of bellmouth connector, 43, the annular concave plane of bellmouth connector second, 53, hold Mouth connector third annular concave plane, 44, the first annular vertical plane of bellmouth connector, 54, the second annular vertical of bellmouth connector Face, 64, bellmouth connector third annular vertical surface.

Specific embodiment:

The utility model is described in further detail with reference to the accompanying drawings of the specification.

Fig. 1 is operating environment when the utility model spigot-and-socket joint is applied to jacking construction, the first steel pipe tube coupling 1 and the Two steel pipe tube couplings 2 are spelled in upper pipe working well 6 by the different types of socket connection 3 in its both ends, bellmouth connector 4 It connects, and heads into the soil body.It should be noted that this operating environment only represents the various engineer applications of the utility model in Fig. 1 One of, the utility model can be used for the connector of digging direct-buried steel pipe or as vertical jointing of load-bearing tubular pole etc..

The connection component of the utility model is made of socket connection 3 and bellmouth connector 4.Connector preferentially selects carbon Steel can also select the steel of the various grades such as stainless steel, but should be able to bear the loads such as connector splicing internal force, jacking forces in pipe-jacking and make With.Bellmouth connector and socket connection can be welded to steel pipe tube coupling to be spliced together both ends in factory can after being transported to scene It is directly assembled at the scene, or spliced in conjunction with push pipe jacking device, the artificial, equipment for reducing that site welding work generates at This and time cost, specifically the production method is as follows:

As shown in figure 3, radially, socket connection 3 is with table in the first cylindrical outer surface 7, the first cylinder Face 8 and the first zigzag joint face 11, the diameter in these three faces and the first steel pipe tube coupling 1 welded therewith it is identical.Along axis To direction, socket connection 3 has the socket welding ends 17 for joint steel pipe tube coupling, and for connecting another steel pipe tube coupling Socket end 16, be cut into socket annular solder inclined-plane 19, socket annular solder on the outside of the socket welding ends 17 of socket connection 3 The socket welding ends 17 of socket connection 3 is connected to the first steel pipe tube coupling end 18, the Welder by weld seam 20 by inclined-plane 19 Work can be completed in factory.

Socket connection 3 has the first zigzag joint face 11, extends to the from the first zigzag joint face right side 14 One zigzag joint face left side 16.It can be seen in the drawings that being distributed the different cone of multiple sizes in zigzag joint face 11 Shape ridge, size is gradually reduced from right to left, and foring multiple annular concave planes, (the first annular concave plane 25 of socket connection is inserted Mouth connector second annular concave plane 35, socket connection third annular concave plane 45, socket connection end annular concave plane 55, diameter is sequentially reduced), convex annular plane (the annular convex flat of the first socket connection convex annular plane 26, socket connection second Face 36, socket connection third convex annular plane 46, diameter is sequentially reduced), annular vertical surface (socket connection it is first annular hang down Face the second annular vertical surface of 27, socket connection 37, socket connection third annular vertical surface 47 directly, diameter is sequentially reduced), ring Shape inclined-plane (the first annular inclined-plane 28 of socket connection, the second annular slope of socket connection 38, socket connection third circular slanting Face 48).

Bellmouth connector 4 has the second cylindrical outer surface 9, the second cylindrical form interior surface 10 and the connection of the second zigzag Face 12, the diameter in these three faces and the second steel pipe tube coupling 2 welded therewith it is identical.Outside the bellmouth welding ends of bellmouth connector 4 Lateral incision is cut into bellmouth annular solder inclined-plane 23, and bellmouth annular solder inclined-plane 23 is connected the end of bellmouth connector 4 by weld seam 24 It is connected to the second steel pipe tube coupling end 22, which can complete in factory.

Bellmouth connector 4 has the second zigzag joint face 12, extends to second from the second zigzag joint face left side Zigzag joint face right side.It can be seen in the drawings that second is distributed the different cone of multiple sizes in zigzag joint face 12 Shape ridge, from left to right size is gradually reduced, and foring multiple annular slopes, (the first annular inclined-plane 32 of bellmouth connector, bellmouth connect The second annular slope of fitting 42, bellmouth connector third annular slope 52), convex annular plane (bellmouth connector starting point annular Convex flat face 31, the first annular convex flat face 41 of bellmouth connector, the second convex annular of bellmouth connector plane 51, bellmouth connector third Convex annular plane 61, diameter is sequentially reduced), annular concave plane (the first annular concave plane 33 of bellmouth connector, bellmouth connector the Second ring concave plane 43, bellmouth connector third annular concave plane 53, diameter is sequentially reduced), annular vertical surface (it is first annular hang down Face the 44, second annular vertical surface 54, third annular vertical surface 64 directly, diameter is sequentially reduced).

The tapered ridge of bellmouth connector is slightly less than the tapered ridge of socket connection, i.e., between two neighboring steel pipe tube coupling Tight fit is formed between socket connection and bellmouth connector, therefore two connectors can be completed by needing to apply certain pressing force Connection, the application process of pressing force, two connector steel are in elastic limits, are completed when the bell socket connects Afterwards, each tapered ridge of bellmouth connector and the tapered ridge of socket connection are bonded to each other, it is ensured that the node can transmit certain Axial compressive force, moment of flexure.

After the completion of this pipe joint is assembled, the of the first zigzag joint face 11 of socket connection 3 and bellmouth connector 4 The anchor ring that each tapered ridge of two zigzag joint face 12 is formed should be bonded to each other, to guarantee that the node can transmit certain axial pressure Power, moment of flexure, for example, the bellmouth of the corresponding fitting bellmouth connector 4 in the socket connection third annular concave plane 45 of socket connection 3 The first annular convex flat face 41 of connector, concrete condition is as shown in the table:

Table 1 holds, socket connection mapping table

Note: two faces of same row are bonded to each other after the completion of representing bell and spigot interface docking.

Due to holding, the manufacturing process of socket connection can have a certain error, may between the face being bonded to each other in upper table There can be minim gap, need that sealing material is taken to be filled.Before connector docking, connected in the zigzag of socket connection Uniformly smear sealing material on the zigzag joint face 45 of part 44 and bellmouth connector, for example, room temperature vulcanized organosilicon sealant or Other sealing materials, the sealing material can play lubricating action in docking operation, can seal after hardening.

Claims (5)

1. a kind of spigot-and-socket steel push pipe connector, the bellmouth connector including being respectively welded at steel pipe tube coupling both ends is connected with socket Part, it is characterised in that socket connection inner surface is smooth and internal diameter is identical as steel pipe tube coupling, the appearance EDS maps of socket connection Multiple tapered ridges, the multiple tapered ridge form the first zigzag joint face in socket connection inner surface；Outside bellmouth connector Surface is smooth and outer diameter is identical as steel pipe tube coupling, the inner surface of bellmouth connector be spaced apart matched with socket connection it is more A tapered ridge, the multiple tapered ridge form the second zigzag joint face in bellmouth connector outer surface.

2. the spigot-and-socket steel push pipe connector according to claim 1, it is characterised in that when two neighboring steel pipe tube coupling connects, The socket connection of one steel pipe tube coupling is pressed into the bellmouth connector of another steel pipe tube coupling, to complete the company of two sections of steel pipes It connects, each tapered ridge of bellmouth connector and the tapered ridge of socket connection are bonded to each other, to guarantee the steel pipe tube coupling connecting node Axial compressive force, moment of flexure can be transmitted.

3. the spigot-and-socket steel push pipe connector according to claim 1, it is characterised in that the outer surface of the socket connection Sealing material or setting sealing joint strip are smeared with the inner surface of bellmouth connector, to achieve the effect that sealing.

4. the spigot-and-socket steel push pipe connector according to claim 2, it is characterised in that the socket connection includes being used for The socket welding ends of joint steel pipe tube coupling, and the socket end for connecting another steel pipe tube coupling, the first zigzag connection Face is located at socket end, and the first zigzag joint face includes that several sections are disconnected, along socket welding ends to socket extreme direction, each Disconnected section includes sequentially connected annular concave plane, annular vertical surface, convex annular plane, annular slope, and near socket end End annular concave plane is connected after saving the annular slope of disconnected end；And disconnected annular is saved to socket extreme direction along socket welding ends Concave plane, annular vertical surface, convex annular plane section radius be gradually reduced；

The bellmouth connector includes the bellmouth welding ends for joint steel pipe tube coupling, and for connecting another steel pipe tube coupling Female end, the second zigzag joint face are located at female end, and the second zigzag joint face includes that several sections are disconnected, and edge is held For mouth welding ends to bellmouth extreme direction, each section is disconnected including sequentially connected annular slope, annular concave plane, annular vertical surface, ring Shape convex flat face, and match near the end annular concave plane of the disconnected starting point setting of bellmouth welding end segment and socket connection The starting point convex annular plane of conjunction, and along bellmouth welding ends to bellmouth extreme direction, save disconnected annular concave plane, annular vertical surface, The section radius of convex annular plane is gradually increased.

5. the spigot-and-socket steel push pipe connector according to claim 4, it is characterised in that the socket welding ends of socket connection Outside is cut into socket annular solder inclined-plane, and socket annular solder inclined-plane passes through solder design to the end of steel pipe tube coupling；Bellmouth Bellmouth annular solder inclined-plane is cut on the outside of the bellmouth welding ends of connector, bellmouth annular solder inclined-plane passes through solder design to steel The end of pipe tube coupling.