Seamless steel tube with high connection strength

Abstract

The utility model discloses a seamless steel tube with high connection strength, and aims to solve the problems that the traditional threaded connection mode is time-consuming and labor-consuming, and the operation is more difficult in some space-limited places. According to the technical scheme, the seamless steel pipe high in connection strength comprises a first pipe body and a second pipe body, a first connecting piece and a second connecting piece are arranged at the ends, close to each other, of the first pipe body and the second pipe body respectively, and the first connecting piece comprises a first fixing block fixedly arranged on the first pipe body in a sleeving mode; an annular positioning groove is formed in the first fixing block, and the second connecting piece comprises a second fixing block fixedly arranged on the second pipe body in a sleeving mode. According to the seamless steel pipe with the high connection strength, through the insertion matching of the annular positioning grooves and the annular positioning blocks and the locking function of the positioning rods, connection is firmer, the overall stability between steel pipes is guaranteed, the disassembly and assembly process is simpler and faster, and complex rotating operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, and more particularly to a seamless steel pipe with high connection strength. Background Art

[0002] Seamless steel pipes are widely used in various industrial applications due to their high strength, corrosion resistance, and excellent fluid transport performance. However, the manufacturing length of seamless steel pipes is often limited by production processes and equipment. This leads to the need to connect multiple steel pipes to meet specific length requirements in practical applications. This connection method is also convenient for maintaining the pipeline system, as only damaged sections of steel pipe need to be repaired separately.

[0003] The traditional method of connecting seamless steel pipes mainly relies on processing thread grooves on the surface of the steel pipe, and then screwing the two steel pipes together by rotation. Although this connection method ensures the strength of the connection to a certain extent, there are still some problems in actual operation. Especially during the maintenance of the pipeline system, if a section of steel pipe is damaged or needs to be replaced, the seamless steel pipe at one end needs to be rotated to the new steel pipe with the thread as a whole. Therefore, the traditional threaded connection method is not only time-consuming and labor-intensive, but also difficult to operate in some places with limited space. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a seamless steel pipe with high connection strength. Through the plug-in cooperation between the annular positioning groove and the annular positioning block, and the locking effect of the positioning rod, the connection is made firmer, the overall stability between the steel pipes is guaranteed, and the disassembly and assembly process is simpler and faster, without the need for complicated rotation operations.

[0005] The above technical objectives of the present utility model are achieved through the following technical solutions: A seamless steel pipe with high connection strength includes a first pipe body and a second pipe body, wherein the first pipe body and the second pipe body are respectively provided with a first connecting member and a second connecting member at one end thereof close to each other, the first connecting member including a first fixing block fixedly sleeved on the first pipe body, the first fixing block having an annular positioning groove defined therein, the second connecting member including a second fixing block fixedly sleeved on the second pipe body, the second fixing block having an annular positioning block pluggable therewith provided on the side thereof facing the annular positioning groove, a plurality of positioning rods passing through the first fixing block, the plurality of positioning rods being distributed in an annular array, the outer side of the annular positioning block being provided with an inclined surface that abuts against the positioning rods, a plurality of sleeves being provided on the outer side of the first fixing block, the other ends of the plurality of positioning rods being respectively located in the inner cavity of the corresponding sleeve, and the inner cavity of the sleeve being provided with an elastic member that abuts against the positioning rods, the annular positioning block having a positioning hole for inserting the positioning rods, the positioning rods being symmetrically provided with actuating rods, the sleeve having a through slot, the actuating rods protruding from the through slot and sliding along the through slot.

[0006] The utility model is further configured as follows: a plurality of protrusions are arranged in an annular array on the outer wall of the annular positioning block, and a groove for the protrusions to slide is opened on the inner wall of the annular positioning groove.

[0007] The present invention is further configured such that: when the first pipe member and the second pipe member abut against each other, the side of the first fixing block facing the second fixing block contacts the surface of the second fixing block.

[0008] The utility model is further configured as follows: a mounting groove is provided on the inner side of the annular positioning block, and a leak-proof gasket is provided in the mounting groove.

[0009] The utility model is further configured such that one end of the positioning rod which is engaged in the positioning slot is in a tapered structure.

[0010] In summary, the present invention has the following beneficial effects:

[0011] The plug-in cooperation between the annular positioning groove and the annular positioning block, as well as the locking effect of the positioning rod, makes the connection more secure, ensures the overall stability between the steel pipes, and makes the disassembly and assembly process simpler and faster without the need for complicated rotation operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall external structure of the first pipe fitting and the second pipe fitting of the utility model;

[0013] Figure 2 This is a schematic internal cross-sectional view of the first pipe and the second pipe of the present invention;

[0014] Figure 3 for Figure 2 A magnified schematic diagram of part A.

[0015] In the figure: 1. first tube body; 2. second tube body; 3. first fixing block; 4. annular positioning groove; 5. second fixing block; 6. annular positioning block; 7. positioning rod; 8. inclined surface; 9. sheath; 10. elastic member; 11. positioning hole; 12. lever; 13. through groove; 14. protrusion; 15. groove; 16. leak-proof gasket. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0017] 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 the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "sleeved / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.

[0019] The present invention will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figure 1-Figure 3A seamless steel pipe with high connection strength includes a first pipe body 1 and a second pipe body 2. The first pipe body 1 and the second pipe body 2 are respectively provided with a first connecting piece and a second connecting piece at one end close to each other. The first connecting piece includes a first fixing block 3 fixedly sleeved on the first pipe body 1. The first fixing block 3 is provided with an annular positioning groove 4. The second connecting piece includes a second fixing block 5 fixedly sleeved on the second pipe body 2. The second fixing block 5 is fixedly provided with an annular positioning block 6 that is plugged into and matched with the annular positioning groove 4 on one side thereof. The first fixing block 3 is provided with a plurality of The positioning rod 7 is a plurality of positioning rods 7 distributed in a circular array. The outer side of the annular positioning block 6 is provided with an inclined surface 8 that abuts against the positioning rod 7. The outer side of the first fixed block 3 is fixed with a plurality of sheaths 9. The other ends of the plurality of positioning rods 7 are respectively located in the inner cavity of the corresponding sheath 9, and the inner cavity of the sheath 9 is provided with an elastic member 10 that abuts against the positioning rod 7. The annular positioning block 6 is provided with a positioning hole 11 for inserting the positioning rod 7. The positioning rod 7 is symmetrically fixed with a shift rod 12. The sheath 9 is provided with a through groove 13. The shift rod 12 protrudes from the through groove 13 and slides along the through groove 13.

[0021] Additionally, a number of protrusions 14 are fixed in an annular array on the outer wall of the annular positioning block 6, and a groove 15 for the protrusions 14 to slide is provided on the inner wall of the annular positioning groove 4. During the plug-in process, the protrusions 14 will slide in the groove 15, thereby limiting the position in the circumferential direction to prevent the annular positioning block 6 from rotating in the annular positioning groove 4, ensuring that the inclined surface 8, the positioning groove and the positioning rod 7 are in the same straight line position.

[0022] When the first pipe fitting and the second pipe fitting are abutted against each other, the side of the first fixing block 3 facing the second fixing block 5 contacts the surface of the second fixing block 5. After the first pipe fitting and the second pipe fitting are connected, the first fixing block 3 and the second fixing block 5 are abutted against each other, which improves the tightness of the connection and makes the appearance more beautiful and compact.

[0023] An installation groove is provided on the inner side of the annular positioning block 6, in which a leak-proof gasket 16 is fixed. The leak-proof gasket 16 improves the sealing performance between the first pipe fitting and the second pipe fitting after connection, preventing liquid or gas leakage in the pipeline.

[0024] One end of the positioning rod 7 that is inserted into the positioning groove has a conical structure. The conical structure can guide itself, which helps the positioning rod 7 to be better reset, inserted and locked in the positioning hole 11 under the action of the elastic member 10.

[0025] Working principle: When in use, align the annular positioning block 6 on the second pipe fitting with the annular positioning groove 4 on the first pipe fitting and insert it. During the plug-in process, the inclined surface 8 on the outside of the annular positioning block 6 will contact the positioning rod 7. Due to the design of the inclined surface 8, the positioning rod 7 will be pushed outward, and at the same time, the elastic member 10 in the inner cavity of the sheath 9 will be compressed. When the annular positioning block 6 is fully inserted into the annular positioning groove 4, the positioning rod 7 will try to reset and insert into the positioning hole 11 on the annular positioning block 6 under the action of the elastic member 10, thereby locking the relative positions of the first tube body 1 and the second tube body 2. When the connection needs to be released, the lever 12 can be toggled through the through groove 13 on the sheath 9 to withdraw the positioning rod 7 from the positioning hole 11, thereby separating the first tube body 1 and the second tube body 2. Through the plug-in cooperation between the annular positioning groove 4 and the annular positioning block 6, and the locking effect of the positioning rod 7, the connection is more secure, the overall stability between the steel pipes is guaranteed, and the disassembly and assembly process is simpler and faster, without the need for complicated rotation operations.

[0026] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A seamless steel pipe with high connection strength, comprising a first pipe body (1) and a second pipe body (2), characterized in that: The first tube body (1) and the second tube body (2) are respectively provided with a first connecting member and a second connecting member at one end close to each other, the first connecting member comprises a first fixing block (3) fixedly sleeved on the first tube body (1), an annular positioning groove (4) is provided in the first fixing block (3), the second connecting member comprises a second fixing block (5) fixedly sleeved on the second tube body (2), an annular positioning block (6) plug-fitted with the annular positioning groove (4) is provided on the side of the second fixing block (5) facing the annular positioning groove (4), a plurality of positioning rods (7) are provided through the first fixing block (3), and the plurality of positioning rods (7) are distributed in an annular array. The outer side of the annular positioning block (6) is provided with an inclined surface (8) that abuts against the positioning rod (7); the outer side of the first fixing block (3) is provided with a plurality of sleeves (9); the other ends of the plurality of positioning rods (7) are respectively located in the inner cavity of the corresponding sleeves (9); and the inner cavity of the sleeves (9) is provided with an elastic member (10) that abuts against the positioning rod (7); the annular positioning block (6) is provided with a positioning hole (11) for inserting the positioning rod (7); the positioning rod (7) is symmetrically provided with a shifting rod (12); the sleeve (9) is provided with a through groove (13); the shifting rod (12) protrudes from the through groove (13) and slides along the through groove (13).

2. The seamless steel pipe with high connection strength according to claim 1, characterized in that: A plurality of protrusions (14) are provided in an annular array on the outer wall of the annular positioning block (6), and a groove (15) for the protrusions (14) to slide is provided on the inner wall of the annular positioning groove (4).

3. The seamless steel pipe with high connection strength according to claim 1, characterized in that: When the first pipe and the second pipe abut against each other, the side of the first fixing block (3) facing the second fixing block (5) contacts the surface of the second fixing block (5).

4. The seamless steel pipe with high connection strength according to claim 1, characterized in that: A mounting groove is provided on the inner side of the annular positioning block (6), and a leak-proof gasket (16) is provided in the mounting groove.

5. The seamless steel pipe with high connection strength according to claim 1, characterized in that: One end of the positioning rod (7) that is inserted into the positioning groove is in a tapered structure.

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