High-precision sealed stainless steel seamless steel pipe

Abstract

The utility model discloses a high-precision sealing type stainless steel seamless steel pipe which comprises a pipe body, a connecting mechanism arranged at the end of the pipe body and an abutting mechanism arranged in the pipe body and used for improving the strength of the pipe body, and the end of the pipe body is sequentially provided with an outer sleeve and an inner sleeve towards the inner layer. The inner sleeve is sleeved with the outer sleeve, a gap is formed between the outer sleeve and the inner sleeve, a threaded structure is arranged on the inner wall of the outer sleeve, the connecting mechanism comprises a connector, and the connector is provided with a threaded sleeve which is in threaded connection with the outer sleeve. The product is connected with the pipe body by rotating the threaded sleeve, convenience and rapidness are achieved, the abutting piece and the connecting pipe are arranged to form the annular supporting structure, the abutting mechanism abuts against the pipe body to locally increase the bearing and supporting capacity of the pipe body, and the adjusting knob is arranged to change the size of the annular supporting structure so as to adapt to pipe bodies with different pipe diameters.

Description

Technical Field

[0001] The utility model belongs to the technical field of seamless steel pipes, and specifically relates to a high-precision sealed stainless steel seamless pipe. Background Art

[0002] Seamless steel pipe is made of a whole round steel through holes. There is no weld on the surface of the steel pipe, which is called seamless steel pipe. According to the production method, seamless steel pipe can be divided into hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, jacking pipe, etc. According to the cross-sectional shape, seamless steel pipe is divided into round and special-shaped. Special-shaped pipes have square, oval, triangle, hexagon, melon seed, star, winged pipe and many other complex shapes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

[0003] Most of the existing seamless stainless steel pipes are cylindrical sleeve structures. During installation, the connection and sealing of the end positions need to be carried out through the cooperation of multiple components. Not only is the efficiency of assembly low, but the sealing is also relatively poor. It is also difficult to fasten the end positions, and the cooperation accuracy during use is also relatively poor.

[0004] Moreover, the existing seamless steel pipe cannot increase the strength of a certain area when in use, so it needs to be changed. Utility Model Content

[0005] The utility model aims to provide a high-precision sealed stainless steel seamless pipe to solve the technical problems in the prior art that the stainless steel seamless pipe has poor assembly efficiency and requires the coordination of multiple components.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a high-precision sealed stainless steel seamless pipe, comprising a pipe body, a connecting mechanism arranged at the end of the pipe body, and an abutting mechanism arranged inside the pipe body to increase the strength of the pipe body;

[0008] The tube body is configured as a hollow structure, an outer sleeve and an inner sleeve are sequentially arranged inwardly from the end of the tube body, a gap is arranged between the outer sleeve and the inner sleeve, and a threaded structure is arranged on the inner wall of the outer sleeve;

[0009] The connecting mechanism comprises a connecting head, and the connecting head is provided with a threaded sleeve which is threadedly connected with the outer sleeve.

[0010] By providing a threaded structure on the inner wall of the outer sleeve to match the threaded sleeve, the product can be connected to the pipe body conveniently and quickly by rotating the threaded sleeve, and by providing an inner sleeve and a butt tube, the outer diameter of the butt tube is adapted to the inner diameter of the inner sleeve, so that the rotation of the threaded sleeve drives the butt tube to enter the interior of the pipe body and abut against the inner wall of the inner sleeve, thereby achieving a closed connection.

[0011] Optionally, the connector is further provided with an abutment tube, which is located in the inner circle of the threaded sleeve and has a gap with the threaded sleeve, and the outer diameter of the abutment tube is adapted to the inner diameter of the inner sleeve.

[0012] Optionally, the threaded sleeve connection is provided with a bearing seat connected to the connecting head, and the outer periphery of the bearing seat is connected with an adjustment block for controlling the rotation of the threaded sleeve. By providing a bearing and an adjustment block, the bearing drives the threaded sleeve to rotate by rotating the adjustment block to complete the threaded connection with the outer sleeve.

[0013] Optionally, the abutment mechanism includes a plurality of abutment plates connected in a ring shape, and a connecting tube for support is provided between the plurality of abutment plates. The connecting tubes are plurality and connected in a ring shape. Abutment plates and connecting tubes are provided to form an annular support structure, and the abutment mechanism is pushed into the interior of the tube body to locally increase the bearing support capacity of the tube body.

[0014] Optionally, an adjusting knob is provided at the end of each connecting pipe, and an adjusting rod is threadedly connected to the other end of the adjusting knob, and the adjusting rod is connected to the abutment sheet.

[0015] Optionally, the adjusting knob is connected to the outer wall of the connecting tube via a roller.

[0016] By setting an adjusting knob, the distance between the connecting pipe and the abutting piece is changed by turning the adjusting knob so as to change the size of the annular supporting structure so as to adapt to pipe bodies with different pipe diameters.

[0017] Beneficial effects and advantages of the utility model:

[0018] The high-precision sealed stainless steel seamless pipe is configured with a threaded structure on the inner wall of the outer sleeve to match the threaded sleeve, so that the product can be connected to the pipe body conveniently and quickly by rotating the threaded sleeve, and by providing an inner sleeve and an abutment tube, the outer diameter of the abutment tube is adapted to the inner diameter of the inner sleeve, so that the rotation of the threaded sleeve drives the abutment tube to enter the interior of the pipe body and abut against the inner wall of the inner sleeve to achieve a sealed connection, and by providing an abutment sheet and a connecting pipe to form an annular support structure, the abutment mechanism is abutted into the interior of the pipe body to locally increase the bearing support capacity of the pipe body, and by providing an adjusting knob, the adjusting knob is rotated to change the distance between the connecting pipe and the abutment sheet to change the size of the annular support structure to adapt to pipe bodies of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the pipe end structure of the utility model;

[0021] Figure 3 It is an enlarged structural diagram of the connection mechanism of the utility model;

[0022] Figure 4 It is an enlarged structural schematic diagram of the abutment mechanism of the utility model.

[0023] In the figure: 1-tube body, 11-outer sleeve, 12-inner sleeve, 2-connecting mechanism, 21-connecting head, 22-butting tube, 23-threaded sleeve, 24-bearing seat, 25-adjusting block, 3-butting mechanism, 31-butting sheet, 32-butting tube, 33-adjusting knob. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] An embodiment, such as Figures 1 to 4 As shown, this embodiment provides a high-precision sealed stainless steel seamless pipe, comprising a pipe body 1, a connecting mechanism 2 arranged at the end of the pipe body 1, and an abutting mechanism 3 arranged inside the pipe body 1 to increase the strength of the pipe body 1;

[0028] refer to Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the tube body 1 is preferably configured as a hollow structure, wherein the end of the tube body 1 is sequentially provided with an outer sleeve 11 and an inner sleeve 12 from the outside to the inside, and a gap is provided between the outer sleeve 11 and the inner sleeve 12, and in this embodiment, the inner wall of the outer sleeve 11 is preferably provided with a threaded structure;

[0029] In this embodiment, the connection mechanism 2 includes a connection head 21, wherein the end of the connection head 21 is provided with a threaded sleeve 23 and an abutting tube 22 in sequence from the outside to the inside, wherein the outer wall of the threaded sleeve 23 is provided with a threaded structure adapted to the outer sleeve 11, and in this embodiment, a gap is also provided between the threaded sleeve 23 and the outer sleeve 11, and the size of the gap is the thickness of the inner sleeve 12, and in this embodiment, the outer diameter of the abutting tube 22 is adapted to the inner diameter of the inner sleeve 12;

[0030] In this embodiment, the threaded sleeve 23 is connected with a bearing seat 24 and connected with the connecting head 21, wherein an adjusting block 25 is connected to the outer periphery of the bearing seat 24, wherein the adjusting blocks 25 are preferably arranged in an array in a plurality of numbers. Preferably, in this embodiment, a sealing ring is provided to fill the gap between the outer sleeve 11 and the inner sleeve 12, and a sealing ring is provided to fill the gap between the abutting tube 22 and the threaded sleeve 23. When in use, the threaded sleeve 23 is abutted against the gap between the outer sleeve 11 and the inner sleeve 12. At this time, the abutting tube 22 is located at the inner wall of the inner sleeve 12, and the adjusting block 25 is controlled to rotate. Under the action of the bearing, the threaded sleeve 23 is threadedly engaged with the inner wall of the outer sleeve 11 for connection and operation, and at the same time, the outer wall of the abutting tube 22 abuts against the inner wall of the inner sleeve 12 until the abutting tube 22 abuts against the inner wall of the gap between the outer sleeve 11 and the inner sleeve 12 or the inner sleeve 12 abuts against the inner wall of the gap between the abutting tube 22 and the threaded sleeve 23.

[0031] refer to Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the abutment mechanism 3 includes a plurality of abutment pieces 31 and connecting tubes 32, wherein the abutment pieces 31 and connecting tubes 32 are connected to form an annular structure. In this embodiment, the connecting tubes 32 are preferably three groups, each group is provided with a plurality of connecting tubes 32 that are connected after penetrating the side of the abutment piece 31 in an annular shape, and each connecting tube 32 is provided with an adjusting knob 33 at both ends to be connected with the adjacent abutment piece 31. In this embodiment, the adjusting knob 33 is preferably provided with an adjusting rod threadedly provided at one end, wherein the adjusting rod is fixed to the abutment piece 31, and the other end of the adjusting knob 33 is movably connected to the outer wall of the connecting tube 32 through a roller and a slide groove in the prior art. When in use, the abutment mechanism 3 is sent into the pipe body 1 through a rope or a push rod, and the support and bearing capacity of a certain position in the pipe body 1 are increased locally by movement. In this embodiment, the annular structure formed by the abutment mechanism 3 is adjusted in size by providing the adjusting knob 33, so as to adapt to pipe bodies 1 of different calibers.

[0032] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A high-precision sealed stainless steel seamless pipe, characterized in that: It comprises a tube body (1), a connecting mechanism (2) arranged at the end of the tube body (1), and an abutting mechanism (3) arranged inside the tube body (1) for increasing the strength of the tube body (1); The tube body (1) is configured as a hollow structure, an outer sleeve (11) and an inner sleeve (12) are sequentially arranged from the end of the tube body (1) toward the inner layer, a gap is provided between the outer sleeve (11) and the inner sleeve (12), and a threaded structure is provided on the inner wall of the outer sleeve (11); The connection mechanism (2) comprises a connection head (21), wherein the connection head (21) is provided with a threaded sleeve (23) threadably connected to the outer sleeve (11).

2. The high-precision sealed stainless steel seamless pipe according to claim 1, characterized in that: The connector (21) is further provided with an abutment tube (22), the abutment tube (22) being located in the inner circle of the threaded sleeve (23) and having a gap with the threaded sleeve (23), and the outer diameter of the abutment tube (22) being adapted to the inner diameter of the inner sleeve (12).

3. The high-precision sealed stainless steel seamless pipe according to claim 2, characterized in that: The threaded sleeve (23) is connected to a bearing seat (24) connected to the connector (21), and an adjustment block (25) for controlling the rotation of the threaded sleeve (23) is connected to the outer periphery of the bearing seat (24).

4. The high-precision sealed stainless steel seamless pipe according to claim 1, characterized in that: The abutment mechanism (3) comprises a plurality of abutment sheets (31) connected in a ring shape, a connecting pipe (32) for support is provided between the plurality of abutment sheets (31), and the connecting pipes (32) are a plurality of connected ring-shaped structures.

5. The high-precision sealed stainless steel seamless pipe according to claim 4, characterized in that: An adjusting knob (33) is provided at the end of each connecting tube (32), and an adjusting rod is threadedly connected to the other end of the adjusting knob (33), and the adjusting rod is connected to the abutment sheet (31).

6. The high-precision sealed stainless steel seamless pipe according to claim 5, characterized in that: The adjusting knob (33) is connected to the outer wall of the connecting tube (32) via a roller.

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