Matched isolation type seamless steel pipe

Abstract

The utility model relates to the technical field of seamless steel tubes, in particular to a matched isolation type seamless steel tube. According to the technical scheme, the safety device comprises a steel pipe main body structure, the center of the steel pipe main body structure is of a main body hollow structure, an integrally-formed cylindrical isolation supporting matching column is arranged at the end of the steel pipe main body structure, and integrally-formed isolation combined safety columns which are evenly distributed in the circumferential direction are arranged on the outer cylindrical face of the isolation supporting matching column. The length of the isolation combination safety column is larger than that of the isolation supporting matching column, and the side, exceeding the isolation supporting matching column, of the isolation combination safety column and close to the hollow structure of the body is provided with an arc-shaped combination stop safety groove. The utility model has the advantages that firm matching connection can be carried out in a welding manner, the isolation structure is arranged at the connecting position, so that the isolation effect of the connecting position during use can be ensured, the heat resistance during use is better, and the safety during use is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a matched isolation type seamless steel pipe. Background Art

[0002] When seamless steel pipes are used to connect products of different diameters, the existing connection method is to directly fit the end faces together and then weld them together, or to use clamping auxiliary components for connection and matching. During use, the heat is relatively high, the heat resistance of the connection position is relatively poor, the matching strength of the connection position is also relatively poor, and the durability during use is relatively short, which cannot meet the matching needs of the connection position with relatively high strength requirements. Utility Model Content

[0003] The purpose of the utility model is to provide a matching isolation type seamless steel pipe, which can be combined and connected with mutually matching steel pipe products by arranging an isolation matching structure at the end of the steel pipe, and can be firmly matched and connected by welding. The connection position is provided with an isolation structure to ensure the isolation effect of the connection position when in use, and has better heat resistance during use, higher safety during use, and stronger bearing capacity of the connection position during use, which can meet the matching needs of the connection position with relatively high connection strength requirements.

[0004] The technical solution of the utility model is as follows:

[0005] A matching isolation type seamless steel pipe includes a steel pipe main structure, the center of the steel pipe main structure is a main hollow structure, and is characterized in that: the end of the steel pipe main structure is provided with an integrally formed cylindrical isolation support matching column, and the outer cylindrical surface of the isolation support matching column is provided with an integrally formed and circumferentially evenly distributed isolation combination safety column, the length of the isolation combination safety column is greater than the length of the isolation support matching column, the isolation combination safety column exceeds the position of the isolation support matching column and is close to the side of the main hollow structure. An arc-shaped combination stop safety groove is provided, and the center position of the end face of the isolation support matching column is provided with a combination connection matching hole communicated with the main hollow structure, and a fastening connection thread groove is provided inside the combination connection matching hole.

[0006] Furthermore, the outer side of the isolation combination safety column is a cylindrical structural surface, and coincides with the outer cylindrical surface of the steel pipe main structure.

[0007] Furthermore, the projection of the structure at the left side of the combined stop safety groove in the left-right direction is located within the area of the projection of the combined stop safety groove in the left-right direction.

[0008] Furthermore, a spare welding-matching stable connection groove is provided on the inner cylindrical surface of the combined stop safety groove, the central axis of which is parallel to the central axis of the combined stop safety groove.

[0009] Beneficial effects of the utility model:

[0010] The utility model provides an isolation matching structure at the end of the steel pipe, which can be combined and connected with mutually matching steel pipe products, and can be firmly matched and connected by welding. The connection position is provided with an isolation structure, which can ensure the isolation effect of the connection position when in use, has better heat resistance during use, is safer during use, and has a stronger bearing capacity at the connection position when in use. It can meet the matching needs of connection positions with relatively high connection strength requirements, and can provide smooth guiding matching for welding materials during welding matching, thereby ensuring higher efficiency during welding matching. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 It is a front schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the left side of the utility model;

[0014] Figure 4 It is a schematic diagram of the right side of the utility model;

[0015] Figure 5 It is a top view schematic diagram of the utility model;

[0016] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model in the second direction;

[0017] In the figure: 1. Steel pipe main structure, 2. Main hollow structure, 3. Isolation support matching column, 4. Isolation combination safety column, 5. Combination stop safety groove, 6. Combination connection matching hole. DETAILED DESCRIPTION

[0018] like Figures 1 to 6As shown, a matching isolation type seamless steel pipe includes a steel pipe main structure 1, the center of the steel pipe main structure 1 is a main hollow structure 2, and the end of the steel pipe main structure 1 is provided with an integrally formed cylindrical isolation support matching column 3, which can provide isolation support when the end is assembled. The outer cylindrical surface of the isolation support matching column 3 is provided with an isolation combination safety column 4 that is integrally formed and evenly distributed around the circumference, which can ensure the structural strength of the outer position. The length of the isolation combination safety column 4 is greater than the length of the isolation support matching column 3, and the position beyond which the steel pipes spliced during assembly can be welded, thereby ensuring the safety of the connection position. The isolation combination safety column 4 is provided with an arc-shaped combination stop safety groove 5 on the side beyond the position of the isolation support matching column 3 and close to the main hollow structure 2, which can be stopped with the end of the matching steel pipe product. At the same time, this structure can provide a smooth welding matching space for welding at the connection position, ensuring more convenient operation during welding and higher welding strength at the connection position. The center position of the end face of the isolation support matching column 3 is provided with a combination connection matching hole 6 that communicates with the main hollow structure 2. The interior of the combination connection matching hole 6 is provided with a fastening connection thread groove, which can enable the mutually matching steel pipes to be preliminarily connected and combined, and the operation during welding is also more convenient. By setting an isolation matching structure at the end of the steel pipe, it can be combined and connected with mutually matching steel pipe products, and can be firmly matched and connected by welding. By setting an isolation structure at the connection position, it can ensure the isolation effect of the connection position when in use, and has better heat resistance during use, higher safety during use, and stronger bearing capacity at the connection position during use, which can meet the matching needs of connection positions with relatively high connection strength requirements.

[0019] Preferably, the outer side of the isolation combination safety column 4 is a cylindrical structural surface, and coincides with the outer cylindrical surface of the steel pipe main structure 1, so that the flatness of the outer structure is better, the overall strength is higher, the durability during use is stronger, and the matching stability of the connection position can be further improved.

[0020] Preferably, the projection of the structure of the left side position of the combined stop safety groove 5 in the left-right direction is located within the area of the projection of the combined stop safety groove 5 in the left-right direction, so that when this position is welded, it can have an anti-loosening effect to the left after welding, making the strength of the connection position higher and the safety during later use more reliable.

[0021] Preferably, a spare welding-matching stable connection groove is provided on the inner cylindrical surface of the combined stop safety groove 5, and the central axis is parallel to the central axis of the combined stop safety groove 5. When welding, the welding space can be made larger, the fusion area of the welding material can be made larger, the overall welding firmness is better, the strength of the connection position can be further improved, and the bearing capacity during use is stronger.

[0022] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or substitutions can be made without departing from the principles described in the present invention. These improvements or substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A seamless steel pipe of a matched isolation type, comprising a steel pipe main structure (1), wherein the center of the steel pipe main structure (1) is a main hollow structure (2), characterized in that: The end of the steel pipe main structure (1) is provided with an integrally formed cylindrical isolation support fitting column (3), and the outer cylindrical surface of the isolation support fitting column (3) is provided with an integrally formed isolation combination safety column (4) that is evenly distributed around the circumference. The length of the isolation combination safety column (4) is greater than the length of the isolation support fitting column (3), and the isolation combination safety column (4) exceeds the position of the isolation support fitting column (3) and is provided with an arc-shaped combination stop safety groove (5) on one side close to the main hollow structure (2). The center position of the end face of the isolation support fitting column (3) is provided with a combination connection fitting hole (6) that is in communication with the main hollow structure (2), and the interior of the combination connection fitting hole (6) is provided with a fastening connection thread groove.

2. The insulated seamless steel pipe according to claim 1, characterized in that: The outer side of the isolation combined safety column (4) is a cylindrical structural surface, and coincides with the outer cylindrical surface of the steel pipe main structure (1).

3. The insulated seamless steel pipe according to claim 1, characterized in that: The projection of the structure at the left side of the combined stop safety groove (5) in the left-right direction is located within the area of the projection of the combined stop safety groove (5) in the left-right direction.

4. The matched isolation type seamless steel pipe according to claim 1, characterized in that: A spare welding matching stable connection groove is provided on the inner cylindrical surface of the combined stop safety groove (5), the central axis of which is parallel to the central axis of the combined stop safety groove (5).

Images