High-strength pressure-bearing spiral steel pipe

Abstract

The utility model discloses a high-strength pressure-bearing spiral steel pipe, which relates to the technical field of spiral steel pipes and comprises a spiral steel pipe outer pipe, a spiral steel pipe inner pipe is fixedly mounted in the spiral steel pipe outer pipe, and a transmission pipe groove is formed in the spiral steel pipe inner pipe. An expansion supporting connecting plate is fixedly connected between the spiral steel pipe outer pipe and the spiral steel pipe inner pipe. The supporting degree of the device can be improved by arranging an expansion supporting connecting plate between the spiral steel pipe outer pipe and the spiral steel pipe inner pipe, a first filling block and a second filling block are installed in a filling groove, the first filling block and the second filling block are directly connected through a connecting plate, a plurality of abutting force columns are installed in the connecting plate, and therefore the supporting degree of the device can be improved. And by arranging the first side face supporting column and the second side face supporting column at the top ends of the two sides of the force abutting column, the bearing degree of the outer spiral steel pipe and the inner spiral steel pipe after extrusion is improved again, and the extrusion strength is improved from the side face.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral steel pipes, in particular to a high-strength pressure-bearing spiral steel pipe. Background Art

[0002] Underground pipeline systems are an important part of urban infrastructure, responsible for transporting key materials such as water resources, natural gas, and petroleum. Spiral steel pipes are widely used in the construction of such underground pipeline systems due to their high strength, corrosion resistance, and economy. In actual construction, spiral steel pipes are usually connected by methods such as welding, plugging, and flange connection to ensure the integrity and tightness of the pipeline system. Spiral steel pipes are made of strip steel coils as raw materials, formed by cold extrusion at normal temperature, and welded into spiral-seam steel pipes by an automatic double-wire double-sided submerged arc welding process. During the processing of spiral steel pipes, generally, the strip steel is first fed into a welded pipe unit, and the strip steel is gradually rolled up by multiple sets of roller presses to form a circular pipe blank with an opening gap, thus completing the preliminary processing of the spiral steel pipe. Traditional spiral steel pipes will have the phenomenon of deformation of the pipe body caused by high pressure, which affects the service life of the pipe body and also affects the transmission efficiency of the device. Therefore, we redesigned a high-strength pressure-bearing spiral steel pipe. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-strength pressure-bearing spiral steel pipe.

[0004] To solve the above technical problems, the utility model provides the following technical solutions: a high-strength pressure-bearing spiral steel pipe, including a spiral steel pipe outer tube, a spiral steel pipe inner tube is fixedly installed inside the spiral steel pipe outer tube, a transmission pipe groove is opened inside the spiral steel pipe inner tube, an extended support connecting plate is fixedly connected between the spiral steel pipe outer tube and the spiral steel pipe inner tube, a limit connection groove is opened on one side surface of the extended support connecting plate, a filling groove is arranged between the spiral steel pipe outer tube and the spiral steel pipe inner tube, a first filling block is detachably installed inside the filling groove, a connecting plate is fixedly connected to one side surface of the first filling block, and a second filling block is fixedly connected to the top end of one side of the connecting plate.

[0005] Preferably, a resistance column is fixedly connected to the inside of one side of the connecting plate, a first side support column is fixedly connected to the top end of one side of the resistance column, and a second side support column is fixedly connected to the top end of the side of the resistance column away from the first side support column.

[0006] Preferably, the positions of the extended support connecting plates and the limit connection grooves correspond one by one, the number of the extended support connecting plates is several, and several of the extended support connecting plates are distributed in a circular pattern between the spiral steel pipe outer tube and the spiral steel pipe inner tube, the filling grooves are located on both sides of the extended support connecting plates, and the connecting plates are located inside the limit connection grooves.

[0007] Preferably, the first filling block and the second filling block are installed within adjacent extension support connecting plates, and the number of the resistance columns is several, and the several resistance columns are equally spaced inside the connecting plate.

[0008] Preferably, a plug rod is fixedly installed at the top end of one side of the first filling block, a plug connection groove is formed inside the plug rod, a connecting rod is fixedly connected to the bottom end of one side of the first filling block, an inner wall protection layer is fixedly installed inside the first filling block, a buffer plate layer is fixedly installed on one side of the inner wall protection layer, and an outer wall protection layer is fixedly installed on one side of the buffer plate layer.

[0009] Preferably, the positional relationship between the plug rod and the connecting rod is one-to-one correspondence, the connection relationship between the plug rod and the connecting rod is movable sleeving, and the structures of the first filling block and the second filling block are the same.

[0010] Compared with the related art, the high-strength pressure-bearing spiral steel pipe provided by the present invention has the following beneficial effects:

[0011] 1. The present invention provides a high-strength pressure-bearing spiral steel pipe. By setting the extension support connecting plate between the spiral steel pipe outer tube and the spiral steel pipe inner tube, the support degree of the device can be improved. The first filling block and the second filling block are installed in the filling groove. The first filling block and the second filling block are directly connected through the connecting plate, and multiple resistance columns are installed inside the connecting plate. By setting the first side support column and the second side support column at the top ends of both sides of the resistance column, the bearing degree of the spiral steel pipe outer tube and the spiral steel pipe inner tube after being squeezed is improved again, and the extrusion strength is improved from the side.

[0012] 2. The present invention provides a high-strength pressure-bearing spiral steel pipe. By setting the connecting rod between the first filling block and the second filling block to insert into the plug connection groove inside, the connection installation between multiple first filling blocks or the fixed connection between multiple second filling blocks is completed through the connection between the plug rod and the connecting rod. The inner wall protection layer, the buffer plate layer and the outer wall protection layer are arranged inside the first filling block and the second filling block, further improving the support strength of the first filling block and the second filling block, and ensuring the high-strength pressure-bearing strength of the spiral steel pipe outer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 is a connection structural schematic diagram of the spiral steel pipe outer tube and the spiral steel pipe inner tube of the present invention;

[0015] Figure 3 is a structural schematic diagram of the filling block connection mechanism of the present invention;

[0016] Figure 4 This is a schematic diagram of the internal material structure of the filling block of the present utility model.

[0017] Reference numerals in the figure: 1, outer spiral steel pipe; 2, inner spiral steel pipe; 3, transmission pipe groove; 4, extended support connecting plate; 5, limit connection groove; 6, filling groove; 7, first filling block; 8, connecting plate; 9, second filling block; 10, resistance column; 11, first side support column; 12, second side support column; 13, pin rod; 14, pin connection groove; 15, connecting rod; 16, inner wall protection layer; 17, buffer plate layer; 18, outer wall protection layer. Specific embodiments

[0018] Embodiment 1:

[0019] Please refer to Figures 1-4 , the present utility model provides a technical solution: a high-strength pressure-bearing spiral steel pipe, including an outer spiral steel pipe 1, an inner spiral steel pipe 2 is fixedly installed inside the outer spiral steel pipe 1, a transmission pipe groove 3 is opened inside the inner spiral steel pipe 2, an extended support connecting plate 4 is fixedly connected between the outer spiral steel pipe 1 and the inner spiral steel pipe 2, a limit connection groove 5 is opened on one side surface of the extended support connecting plate 4, a filling groove 6 is arranged between the outer spiral steel pipe 1 and the inner spiral steel pipe 2, a first filling block 7 is detachably installed inside the filling groove 6, a connecting plate 8 is fixedly connected to one side surface of the first filling block 7, a second filling block 9 is fixedly connected to the top end of one side of the connecting plate 8, a resistance column 10 is fixedly connected to the inside of one side of the connecting plate 8, a first side support column 11 is fixedly connected to the top end of one side of the resistance column 10, a second side support column 12 is fixedly connected to the top end of the side of the resistance column 10 away from the first side support column 11, the positions of the extended support connecting plate 4 and the limit connection groove 5 correspond one by one, the number of the extended support connecting plates 4 is several, and several extended support connecting plates 4 are distributed in a circular pattern between the outer spiral steel pipe 1 and the inner spiral steel pipe 2, the filling groove 6 is located on both sides of the extended support connecting plate 4, the connecting plate 8 is located inside the limit connection groove 5, the first filling block 7 and the second filling block 9 are installed inside adjacent extended support connecting plates 4, the number of the resistance columns 10 is several, and several resistance columns 10 are equidistantly distributed inside the connecting plate 8.

[0020] In an embodiment, the support degree of the device can be improved by setting the extended support connecting plate 4 between the spiral steel pipe outer tube 1 and the spiral steel pipe inner tube 2. The first filling block 7 and the second filling block 9 are installed inside the filling groove 6. The first filling block 7 and the second filling block 9 are directly connected through the connecting plate 8. A plurality of resistance columns 10 are installed inside the connecting plate 8. By setting the first side support column 11 and the second side support column 12 at the two top ends of the resistance column 10, the bearing degree of the spiral steel pipe outer tube 1 and the spiral steel pipe inner tube 2 after being extruded is improved again, and the extrusion strength is improved from the side.

[0021] Embodiment 2:

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: a high-strength pressure-bearing spiral steel pipe, including a plug rod 13 fixedly installed at the top end of one side of the first filling block 7. An insertion connection groove 14 is opened inside the plug rod 13. A connecting rod 15 is fixedly connected to the bottom end of one side of the first filling block 7. An inner wall protection layer 16 is fixedly installed inside the first filling block 7. A buffer plate layer 17 is fixedly installed on one side of the inner wall protection layer 16. An outer wall protection layer 18 is fixedly installed on one side of the buffer plate layer 17. The positional relationship between the plug rod 13 and the connecting rod 15 is one-to-one correspondence, and the connection relationship between the plug rod 13 and the connecting rod 15 is a movable socket connection. The structures of the first filling block 7 and the second filling block 9 are the same.

[0023] In an embodiment, by inserting the connecting rod 15 into the insertion connection groove 14 between the first filling block 7 and the second filling block 9, the connection between the plug rod 13 and the connecting rod 15 directly completes the connection and installation between multiple first filling blocks 7, or the fixed connection between multiple second filling blocks 9. An inner wall protection layer 16, a buffer plate layer 17 and an outer wall protection layer 18 are provided inside the first filling block 7 and the second filling block 9, further improving the support strength of the first filling block 7 and the second filling block 9, and ensuring the high-strength pressure-bearing strength of the spiral steel pipe outer tube 1.

[0024] Working principle:

[0025] The support degree of the device can be improved by setting the extended support connecting plate 4 between the spiral steel pipe outer tube 1 and the spiral steel pipe inner tube 2. The first filling block 7 and the second filling block 9 are installed inside the filling groove 6. The first filling block 7 and the second filling block 9 are directly connected through the connecting plate 8. A plurality of resistance columns 10 are installed inside the connecting plate 8. By setting the first side support column 11 and the second side support column 12 at the two top ends of the resistance column 10, the bearing degree of the spiral steel pipe outer tube 1 and the spiral steel pipe inner tube 2 after being extruded is improved again, and the extrusion strength is improved from the side;

[0026] By setting that between the first filling block 7 and the second filling block 9, a bolt is inserted into the inside of the bolt connection groove 14 through the connecting rod 15, the connection between the direct bolt rod 13 and the connecting rod 15 completes the connection and installation between multiple first filling blocks 7, or the fixed connection between multiple second filling blocks 9. An inner wall protective layer 16, a buffer plate layer 17 and an outer wall protective layer 18 are arranged inside the first filling block 7 and the second filling block 9, further improving the support strength of the first filling block 7 and the second filling block 9, and ensuring the high-strength pressure-bearing strength of the outer pipe 1 of the spiral steel pipe.

Claims

1. A high-strength pressure-bearing spiral steel pipe, comprising an outer spiral steel pipe (1), and an inner spiral steel pipe (2) fixedly installed inside the outer spiral steel pipe (1), characterized in that: A transfer pipe groove (3) is provided inside the inner pipe (2) of the spiral steel pipe. An extended support connecting plate (4) is fixedly connected between the outer pipe (1) of the spiral steel pipe and the inner pipe (2) of the spiral steel pipe. A limit connection groove (5) is provided on one side surface of the extended support connecting plate (4). A filling groove (6) is provided between the outer pipe (1) of the spiral steel pipe and the inner pipe (2) of the spiral steel pipe. A first filling block (7) is detachably installed inside the filling groove (6). A connecting plate (8) is fixedly connected to one side surface of the first filling block (7). A second filling block (9) is fixedly connected to the top end of one side of the connecting plate (8).

2. The high-strength pressure-bearing spiral steel pipe according to claim 1, wherein A resistance column (10) is fixedly connected inside one side of the connecting plate (8). A first side support column (11) is fixedly connected to the top end of one side of the resistance column (10). A second side support column (12) is fixedly connected to the top end of the side of the resistance column (10) away from the first side support column (11).

3. A high-strength pressure-bearing spiral steel pipe according to claim 1, wherein, The positions of the extended support connecting plate (4) and the limit connection groove (5) correspond one by one. The number of the extended support connecting plates (4) is several. Several of the extended support connecting plates (4) are distributed in a circular pattern between the outer pipe (1) of the spiral steel pipe and the inner pipe (2) of the spiral steel pipe. The filling groove (6) is located on both sides of the extended support connecting plate (4). The connecting plate (8) is located inside the limit connection groove (5).

4. The high-strength pressure-bearing spiral steel pipe according to claim 2, wherein The first filling block (7) and the second filling block (9) are installed inside adjacent extended support connecting plates (4). The number of the resistance columns (10) is several. Several of the resistance columns (10) are equally spaced inside the connecting plate (8).

5. A high-strength pressure-bearing spiral steel pipe according to claim 1, characterized in that, A plug pin rod (13) is fixedly installed at the top end of one side of the first filling block (7). A plug pin connection groove (14) is provided inside the plug pin rod (13). A connecting rod (15) is fixedly connected to the bottom end of one side of the first filling block (7). An inner wall protection layer (16) is fixedly installed inside the first filling block (7). A buffer plate layer (17) is fixedly installed on one side of the inner wall protection layer (16). An outer wall protection layer (18) is fixedly installed on one side of the buffer plate layer (17).

6. The high-strength pressure-bearing spiral steel pipe according to claim 5, characterized in that, The positional relationship between the plug pin rod (13) and the connecting rod (15) corresponds one by one. The connection relationship between the plug pin rod (13) and the connecting rod (15) is a movable socket connection. The structures of the first filling block (7) and the second filling block (9) are the same.

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