CN207687517U - Spigot-and-socket flexible joint steel pipe - Google Patents

Abstract

The utility model discloses a kind of spigot-and-socket flexible joint steel pipes, belong to pipeline field.The spigot-and-socket flexible joint steel pipe includes tube body, one end in tube body is provided with socket, the other end of tube body is provided with bellmouth, socket is provided with load shoulder, load shoulder is adapted for insertion into the bellmouth of docking, it is provided with first annular groove on the outer wall of socket, first annular groove is arranged with the first sealing ring, the thickness of first sealing ring is more than the depth of first annular groove, when steel pipe be fitted to each other use and there is ambient pressure to act on load shoulder, ensure that the decrement of the first sealing ring will not change so that sealing effect is more preferable.

Description

Spigot-and-socket flexible joint steel pipe

Technical field

The utility model is related to pipeline field, more particularly to a kind of spigot-and-socket flexible joint steel pipe.

Background technology

With the development of economy, pipeline has become the most quick, economic of the media such as conveying water, oil, natural gas and can The method leaned on, and the main tubing of pipeline has plastic tube, pipe of cement and steel pipe etc. at present, and since steel pipe has intensity high, tough Property it is good, light-weight, voltage endurance capability is high the advantages that as preferred tubing.

Due to the requirement of delivered length, need to connect between steel pipe and steel pipe, the form of steel pipe interface mainly has at present Threaded connection, welding and setting bell socket etc. are a variety of, and bell socket mostly uses taper in setting and inserts in the prior art Mouthful, by the way that socket to be inserted into bellmouth, realize the connection between steel pipe and steel pipe.

In the process of implementing the utility model, designer has found that the existing technology has at least the following problems：

Bell socket in the prior art is tapered spigot, and the internal diameter of bellmouth is more than the outer diameter of socket so that socket It is inserted into bellmouth, when pipeline is by axial force, is also easy to produce axial float, reduces the compression ratio of sealing ring, easy to produce Leakage.

Utility model content

In consideration of it, the utility model provides a kind of better spigot-and-socket flexible joint steel pipe of sealing effect, for ensuring steel The leakproofness of pipe.

A kind of spigot-and-socket flexible joint steel pipe, the steel pipe include tube body, wherein

One end of the tube body is provided with socket, and the other end of the tube body is provided with bellmouth；

The socket is provided with load shoulder, and the load shoulder is adapted for insertion into the bellmouth of its docking；

It is provided with first annular groove on the outer wall of the socket, the first sealing is arranged in the first annular groove Circle, the thickness of first sealing ring are more than the depth of the first annular groove；And/or it is arranged on the inner wall of the bellmouth There is second annular groove, the second sealing ring is arranged in the second annular groove, the thickness of second sealing ring is more than institute State the depth of second annular groove.

Selectively, the bellmouth includes connected introduction segment and seal section, and the caliber of the introduction segment is more than described insert The caliber of mouth.

Selectively, the seal section is flat segments.

Selectively, the first annular groove or the second annular groove are mold compression moulding groove.

Selectively, the value range of the width of the first annular groove or the second annular groove be 10~ 20mm。

Selectively, the value range of the length of the tube body is 11~12m.

Selectively, the value range of the height of first sealing ring or second sealing ring is 20~30mm.

Selectively, the value range of the length of the socket and the bellmouth is 200~300mm.

Selectively, the material of the steel pipe is Q235 steel or Q345 steel.

The advantageous effect of technical solution that the utility model embodiment provides is：

The spigot-and-socket flexible joint steel pipe that the utility model embodiment provides is provided with socket by one end in tube body, The other end of tube body is provided with bellmouth, and socket is provided with load shoulder, and load shoulder is adapted for insertion into the bellmouth of docking, socket Outer wall on be provided with first annular groove, first annular groove is arranged with the first sealing ring, and the thickness of the first sealing ring is more than The depth of first annular groove use and has ambient pressure to act on load shoulder, ensures first close when steel pipe is fitted to each other Decrement at seal will not change so that sealing effect is more preferable.

Description of the drawings

It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is cross-section structure when a kind of spigot-and-socket flexible joint steel pipe connection that the utility model embodiment provides uses Schematic diagram；

Fig. 2 is first annular groove or second in a kind of spigot-and-socket flexible joint steel pipe that the utility model embodiment provides The structural schematic diagram of the making die apparatus of annular groove.

Reference numeral in figure indicates respectively：

1, tube body；

2, socket；

201, load shoulder；

202, first annular groove；

3, bellmouth；

301, introduction segment；

302, seal section；

4, the first sealing ring；

5, the first mold；

6, the second mold.

Specific implementation mode

To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing Mode is described in further detail.

The utility model embodiment provides a kind of spigot-and-socket flexible joint steel pipe, and the spigot-and-socket flexible joint steel pipe needs It wants several sections to link together two-by-two, forms pipeline and used.Therefore, in the utility model embodiment, each other with three It is described in detail for the connected lengths of steel pipes of docking, connecting, cross-sectional view when using is as shown in Figure 1.

Specifically, which includes tube body 1.

One end of tube body 1 is provided with socket 2, the other end of tube body 1 is provided with bellmouth 3.

Socket 2 is provided with load shoulder 201, and load shoulder 201 is adapted for insertion into the bellmouth 3 of its docking.

In a kind of realization method of the present embodiment, first annular groove 202, the first ring are provided on the outer wall of socket 2 The first sealing ring 4 is arranged in connected in star 202, the thickness of the first sealing ring 4 is more than the depth of first annular groove 202；Another In a kind of realization method, it is provided with second annular groove on the inner wall of bellmouth 3, the second sealing is arranged in second annular groove Circle, the thickness of the second sealing ring are more than the depth of second annular groove；In another realization method, it can use simultaneously above-mentioned Two kinds of realization methods.

Therefore, the spigot-and-socket flexible joint steel pipe of the utility model embodiment utilizes tube body 1, by one end of tube body 1 It is provided with socket 2, the other end of tube body 1 is provided with bellmouth 3, socket 2 is provided with load shoulder 201, and load shoulder 201 is suitable for It is inserted into the bellmouth 3 of its docking, first annular groove 202 is provided on the outer wall of socket 2, first annular groove 202 is arranged Have the first sealing ring 4, the thickness of the first sealing ring 4 is more than the depth of first annular groove 202, when steel pipe be fitted to each other use and There is ambient pressure to act on load shoulder 201, ensures that the decrement at the first sealing ring 4 will not change so that sealing Effect is more preferable.

Based on above-mentioned apparatus, the concrete structure of the spigot-and-socket flexible joint steel pipe of the utility model embodiment is arranged below It is described in detail：

For bellmouth 3, bellmouth 3 includes that connected introduction segment 301 and seal section 302, the caliber of introduction segment 301 are more than The caliber of socket 2, as shown in Figure 1.

Wherein, the effect of introduction segment 301 is in order to import socket 2, convenient for the cooperation between bellmouth 3 and socket 2；Seal section 302 effect is auxiliary the first sealing ring 4 or the second sealing ring so that, can also when socket 2 moves in limited distance on it Keep the sealing between socket 2 and the bellmouth 3 docked.

It should be noted that in the utility model embodiment, seal section 302 is flat segments, is arranged such, it can be ensured that When steel pipe is by axial force, seal section 302 can move axially in a certain range, without influence socket 2 with it is right Sealing effect between the bellmouth 3 connect, it is ensured that the leakproofness between socket 2 and the bellmouth 3 docked.

Further, it is provided with gap between bellmouth 3 and the socket 2 docked, as shown in Figure 1, realizing bellmouth 3 and docking Socket 2 between clearance fit, on the one hand, may insure the leakproofness between bellmouth 3 and the socket 2 docked；On the other hand, Can ensure between bellmouth 3 and the socket 2 docked may exist a certain range of corner, with adapt to construction, geology situations such as Variation.

For first annular groove 202 and/or second annular groove, first annular groove 202 or the second annular are recessed Slot is mold compression moulding groove, and the utility model embodiment provides the system of first annular groove 202 or second annular groove Make die apparatus, structural schematic diagram is incited somebody to action as shown in Fig. 2, when needing to form first annular groove 202 or second annular groove The socket 2 or bellmouth 3 of steel pipe are put between the first mold 5 and the second mold 6, according to preset first annular groove 202 or The size of second annular groove, by the first mold of forcing press pair 5 carry out pressure application, formed first annular groove 202 or Second annular groove.

For example, the outer wall of socket 2 is carried by the second mold 6, the first mold 5 is resisted against the inner wall of socket 2, then Apply pressure using the first mold of forcing press pair 5 so that the first mold 5 squeezes the inner wall of socket 2, forms first annular groove 202 or second annular groove.

Utilize the making die apparatus of the first annular groove 202 or second annular groove so that first annular groove 202 Or the precision higher of second annular groove compact dimensions, margin of tolerance smaller, meanwhile, the structure of the making die apparatus is simple, Low manufacture cost, good economy performance, suitable for first annular groove 202 or second annular groove are made in batches.

Further, the value range of the width of first annular groove 202 or second annular groove is 10~20mm, and the The width setting value of one annular groove 202 or second annular groove depends on the size of the thickness and caliber of steel pipe.

It is corresponding, it is arranged according to the width of first annular groove 202 or second annular groove, chooses the of suitable width One sealing ring 4 or the second sealing ring, ensure the first sealing ring 4 or the second sealing ring can fill in first annular groove 202 or In second annular groove.

Meanwhile first the value range of height of sealing ring 4 or the second sealing ring be 20~30mm, according to the thickness of steel pipe The size of degree, the depth of first annular groove 202 or second annular groove and steel pipe caliber is first close come determine actual use The height of seal 4 or the second sealing ring.

For example, the width of first annular groove 202 can be 15mm, and the width of the first sealing ring 4 can be 16mm, The height of first sealing ring 4 can be 22mm.

Based on above-mentioned, for the ease of the use of interface, the value range of the length of socket 2 and bellmouth 3 is 200~300mm, The length of socket 2 and bellmouth 3 can be selectively set, in the utility model embodiment, no according to the needs of actual production Make specific limit.

Those skilled in the art are it is understood that the laying of long-distance pipe needs the vehicles to transport the steel pipe for building pipeline Defeated arrive is laid with ground.For example, in actual transport, steel pipe generally relies on railway traffic and is transported, to save cost.

In the utility model embodiment, for tube body 1, since the length of the railroad car of transport steel pipe is 12.5m, in order to ensure the lossless transport of steel pipe, the value range of the length of general tube body 1 is 11~12m, preferably 12m, is used To increase the total length of the steel pipe of transport.

It should be noted that the material of steel pipe can be Q235 steel or Q345 steel.Since Q235 steel or Q345 steel are structure Steel has good plasticity, and forming ability is good, and has certain intensity, is suitable for the engineering structures such as bridge, building, practical Performance is good, and price is also relatively cheap, cost-effective, suitable for for making the spigot-and-socket flexible interface in the utility model embodiment Steel pipe.

In addition, the spigot-and-socket flexible joint steel pipe of the utility model embodiment is suitable for municipal water supply pipe-line construction, it can It, can be for giving passing through for flow in pipeline to form pipeline using several spigot-and-socket flexible joint steel pipes.

In specifically implementation process, first, steel pipe is transported.Pass through construction personnel's being somebody's turn to do calibers such as several sections of equal lengths Spigot-and-socket flexible joint steel pipe, which transports, is laid with place；

Secondly, joint steel pipe.Specifically, the bellmouth 3 of certain section of steel pipe is inserted into the socket 2 of steel pipe of docking, it is ensured that The outer wall of this section of bellmouth 3 is in contact with the first sealing ring 4 in the socket 2 of the steel pipe of docking to realize sealing；Another docking The bellmouth 3 of steel pipe is inserted into the socket 2 of certain section of steel pipe, the outer wall phase of the first sealing ring 4 and the bellmouth 3 of another steel pipe docked Contact is to realize sealing.

Finally, the operating process for repeating previous step, until the pipeline by all fastener for connection at preset length.

The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (9)

1. a kind of spigot-and-socket flexible joint steel pipe, which is characterized in that the steel pipe includes tube body (1), wherein

One end of the tube body (1) is provided with socket (2), and the other end of the tube body (1) is provided with bellmouth (3)；

The socket (2) is provided with load shoulder (201), and the load shoulder (201) is adapted for insertion into the bellmouth (3) of its docking It is interior；

It is provided with first annular groove (202) on the outer wall of the socket (2), is arranged in the first annular groove (202) First sealing ring (4), the thickness of first sealing ring (4) are more than the depth of the first annular groove (202)；And/or institute It states and is provided with second annular groove on the inner wall of bellmouth (3), be arranged with the second sealing ring in the second annular groove, described The thickness of two sealing rings is more than the depth of the second annular groove.

2. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that the bellmouth (3) includes connected Introduction segment (301) and seal section (302), the caliber of the introduction segment (301) are more than the caliber of the socket (2).

3. spigot-and-socket flexible joint steel pipe according to claim 2, which is characterized in that the seal section (302) is straight Section.

4. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that the first annular groove (202) Or the second annular groove is mold compression moulding groove.

5. spigot-and-socket flexible joint steel pipe according to claim 4, which is characterized in that the first annular groove (202) Or the value range of the width of the second annular groove is 10~20mm.

6. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that the length of the tube body (1) takes It is worth ranging from 11~12m.

7. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that first sealing ring (4) or institute The value range for stating the height of the second sealing ring is 20~30mm.

8. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that the socket (2) and the bellmouth (3) value range of length is 200~300mm.

9. spigot-and-socket flexible joint steel pipe according to claim 1, which is characterized in that the material of the steel pipe is Q235 steel Or Q345 steel.