Thin-wall light-weight carbon steel pipeline for fire-fighting gas

Abstract

According to the technical scheme, the thin-wall light-weight carbon steel pipeline is characterized in that the thin-wall light-weight carbon steel pipeline comprises an inner pipe, an outer pipe is arranged on the outer circle wall face of the inner pipe, the outer circle wall face of the outer pipe is fixedly connected with a first connecting disc in a sleeved mode, and the outer circle wall face of the outer pipe is fixedly connected with a second connecting disc in a sleeved mode; the butt joint assemblies are arranged at one end of the first connecting disc and one end of the second connecting disc correspondingly and used for conducting butt joint on the multiple sections of inner pipes and the multiple sections of outer pipes, each butt joint assembly comprises a plurality of connecting holes, the connecting holes are formed in one end of the first connecting disc and one end of the second connecting disc correspondingly, and the butt joint assemblies are used for conducting butt joint on the multiple sections of inner pipes and the multiple sections of outer pipes. Through mutual cooperation of the inner pipe, the outer pipe, the first connecting disc, the second connecting disc, the connecting hole, the fixing rod, the connecting rod, the connecting ring, the mounting pipe, the spring, the pressing plate and the connecting column, the effects that the weight of the carbon steel pipe is reduced, and a worker can conveniently conduct butt joint mounting on the multiple sections of carbon steel pipes are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon steel pipes, and particularly relates to a thin-wall lightweight carbon steel pipe for fire-fighting gas. Background Art

[0002] Carbon steel pipes are made by piercing steel ingots or solid round steel into seamless pipes, and then hot-rolling, cold-rolling or cold-drawing. Carbon steel pipes play an important role in the steel pipe industry in China. The raw material of carbon steel pipes is round tube blanks, which need to be cut by a cutting machine into blanks with a length of about 1 meter, and then sent to a furnace for heating by a conveyor belt. The steel billets are sent into the furnace for heating, and the temperature is about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is a key issue. After the round tube blanks are taken out of the furnace, they need to be pierced by a pressure piercing machine.

[0003] In the prior art, for a carbon steel pipe for fire-fighting gas, in order to prevent gas leakage or pipe deformation, the pipe wall thickness may need to be made thicker during the manufacturing process. As a result, the weight of the carbon steel pipe for fire-fighting gas may increase accordingly. Then, when the staff connects the carbon steel pipe for fire-fighting gas, the weight of the pipe may make it difficult for the staff to move the pipe for docking, which may affect the use effect of the carbon steel pipe for fire-fighting gas. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a thin-wall lightweight carbon steel pipe for fire-fighting gas, which solves the problem that for a carbon steel pipe for fire-fighting gas, in order to prevent gas leakage or pipe deformation, the pipe wall thickness may need to be made thicker during the manufacturing process. As a result, the weight of the carbon steel pipe for fire-fighting gas may increase accordingly. Then, when the staff connects the carbon steel pipe for fire-fighting gas, the weight of the pipe may make it difficult for the staff to move the pipe for docking, which may affect the use effect of the carbon steel pipe for fire-fighting gas.

[0005] The above technical object of the utility model is achieved by the following technical solutions:

[0006] A thin-wall lightweight carbon steel pipe for fire-fighting gas includes an inner pipe, an outer pipe is arranged on the outer circumferential wall surface of the inner pipe, a first connection disk is fixedly sleeved on the outer circumferential wall surface of the outer pipe, and a second connection disk is fixedly sleeved on the outer circumferential wall surface of the outer pipe; a docking component is respectively arranged at one ends of the first connection disk and the second connection disk and is used for docking multiple sections of the inner pipe and the outer pipe.

[0007] In order to dock multiple sections of inner pipes and outer pipes, the docking assembly includes: a number of connection holes, and a number of the connection holes are respectively opened at one end of the first connection disk and the second connection disk. A number of fixing rods are fixedly installed on the inner circumferential wall of the outer pipe. A number of connecting rods are fixedly installed between the number of fixing rods. Connection rings are fixedly installed at both ends of the number of fixing rods. The outer circumferential wall of the inner pipe is fixedly installed with the fixing rods, the connecting rods and the connection rings respectively. A number of installation pipes are fixedly installed on the inner circumferential wall of the outer pipe. A spring is movably sleeved on the inner circumferential wall of the installation pipe. One end of the spring is fixedly installed on the inner circumferential wall of the outer pipe. A pressing plate is movably sleeved on the inner circumferential wall of the installation pipe. The top surface of the pressing plate is fixedly installed with the spring. A connection column is fixedly installed on the bottom surface of the pressing plate. The bottom surface of the connection column is fixedly installed on the outer circumferential wall of the inner pipe.

[0008] In order to prevent dislocation between the pressing plate and the installation pipe, as a thin-walled lightweight carbon steel pipe for fire-fighting gas of the present utility model, preferably, a limiting ring is fixedly sleeved on the inner circumferential wall of the installation pipe, and the inner circumferential wall of the limiting ring is movably sleeved with the connection column.

[0009] In order to strengthen the airtightness after the butt joint of the carbon steel pipe, as a thin-walled lightweight carbon steel pipe for fire-fighting gas of the present utility model, preferably, a sealing groove is opened at one end of the first connection disk, a sealing ring is fixedly sleeved on the inner circumferential wall of the sealing groove, and an insertion ring is fixedly installed at one end of the second connection disk. The insertion ring is movably sleeved with the inner circumferential wall of the sealing groove.

[0010] In order to prevent gas from leaking through the butt joint of the carbon steel pipe, as a thin-walled lightweight carbon steel pipe for fire-fighting gas of the present utility model, preferably, an extension sleeve is fixedly sleeved on the inner circumferential wall of the inner pipe.

[0011] In order to protect the outer pipe, as a thin-walled lightweight carbon steel pipe for fire-fighting gas of the present utility model, preferably, a protective sleeve is fixedly sleeved on the outer circumferential wall of the outer pipe.

[0012] In order to improve the service life of the first connection disk and the second connection disk, as a thin-walled lightweight carbon steel pipe for fire-fighting gas of the present utility model, preferably, corrosion-resistant coatings are respectively applied on the surfaces of the first connection disk and the second connection disk.

[0013] In summary, the present utility model mainly has the following beneficial effects:

[0014] By the mutual cooperation of the inner pipe, outer pipe, first connection disk, second connection disk, connection holes, fixing rods, connecting rods, connection rings, installation pipes, springs, pressing plates and connection columns provided, the effect of reducing the weight of the carbon steel pipe and facilitating the docking installation of multiple sections of carbon steel pipes by workers is achieved. Brief Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the first connection disk of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the inner tube of the present utility model;

[0018] Figure 4 is a structural schematic diagram of the installation tube of the present utility model.

[0019] Reference numerals in the drawings: 1, inner tube; 2, outer tube; 3, first connection disk; 4, second connection disk; 5, protective sleeve; 6, connection hole; 7, embedding ring; 8, sealing groove; 9, sealing ring; 10, fixing rod; 11, installation tube; 12, extension sleeve; 13, spring; 14, pressing plate; 15, limiting ring; 16, connection column; 17, connecting rod; 18, connection ring. Detailed Description of the Preferred Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0021] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, A thin-walled lightweight carbon steel pipe for fire-fighting gas, including an inner pipe 1 made of PVP hose material. An outer pipe 2 is provided on the outer circumferential wall surface of the inner pipe 1, and the outer pipe 2 is made of polyimide material. A first connection disk 3 is fixedly sleeved on the outer circumferential wall surface of the outer pipe 2, and a second connection disk 4 is fixedly sleeved on the outer circumferential wall surface of the outer pipe 2. Docking components are respectively provided at one ends of the first connection disk 3 and the second connection disk 4 for docking multiple sections of the inner pipe 1 and the outer pipe 2. The docking components include a number of connection holes 6, and the number of connection holes 6 are respectively opened at one ends of the first connection disk 3 and the second connection disk 4. A number of fixing rods 10 are fixedly installed on the inner circumferential wall surface of the outer pipe 2. The fixing rods 10 are made of carbon steel material. A number of connecting rods 17 are fixedly installed between the number of fixing rods 10. The connecting rods 17 are made of carbon steel material. Connection rings 18 are fixedly installed at both ends of the number of fixing rods 10. The connection rings 18 are made of carbon steel material. The outer circumferential wall surface of the inner pipe 1 is fixedly installed with the fixing rods 10, the connecting rods 17 and the connection rings 18 respectively. A number of installation pipes 11 are fixedly installed on the inner circumferential wall surface of the outer pipe 2. A spring 13 is movably sleeved on the inner circumferential wall surface of the installation pipe 11. One end of the spring 13 is fixedly installed on the inner circumferential wall surface of the outer pipe 2. A pressing plate 14 is movably sleeved on the inner circumferential wall surface of the installation pipe 11. The top surface of the pressing plate 14 is fixedly installed with the spring 13. A connecting column 16 is fixedly installed on the bottom surface of the pressing plate 14. The bottom surface of the connecting column 16 is fixedly installed on the outer circumferential wall surface of the inner pipe 1. By providing the second connection disk 4 and the protective sleeve 5, during use, the staff aligns the first connection disk 3 of the next section of carbon steel pipe with the second connection disk 4 of the previous section of carbon steel pipe, and uses bolts and nuts to fix the two sections of carbon steel pipes through the connection holes 6, thereby docking and installing the two sections of carbon steel pipes. During this process, since only the fixing rods 10, the connecting rods 17 and the connection rings 18 are made of carbon steel during the manufacturing process of the carbon steel pipe, the overall weight of the carbon steel pipe is significantly reduced compared to ordinary gas carbon steel pipes. At the same time, during use, the carbon steel support part composed of the fixing rods 10, the connecting rods 17 and the connection rings 18 acts between the outer pipe 2 and the inner pipe 1, so the strength of the inner pipe 1 and the outer pipe 2 will not be significantly reduced during use. When the gas pressure inside the inner pipe 1 is relatively large, the inner pipe 1 made of PVP hose material will deform due to the pressure. At this time, the deformed part on the surface of the inner pipe 1 will drive the connecting column 16 and the pressing plate 14 to move, and then the pressing plate 14 will squeeze the spring 13. At this time, the resilience of the spring 13 will push the connecting column 16 and the inner pipe 1 to reset and offset the gas pressure inside the inner pipe 1, thereby preventing the inner pipe 1 from being damaged due to excessive pressure during use, thus achieving the effect of reducing the weight of the carbon steel pipe and facilitating the staff to dock and install multiple sections of carbon steel pipes. Embodiment 2

[0022] Based on the above-mentioned Embodiment 1, referring to Figure 2 、 Figure 3 and Figure 4, a limiting ring 15 is fixedly sleeved on the inner circular wall surface of the installation pipe 11, and the inner circular wall surface of the limiting ring 15 is movably sleeved with the connecting column 16. By providing the limiting ring 15, the dislocation between the pressing plate 14 and the installation pipe 11 is prevented. A sealing groove 8 is formed at one end of the first connecting disc 3, and a sealing ring 9 is fixedly sleeved on the inner circular wall surface of the sealing groove 8. An embedding ring 7 is fixedly installed at one end of the second connecting disc 4, and the embedding ring 7 is movably sleeved with the inner circular wall surface of the sealing groove 8. By providing the sealing ring 9, the airtightness after the butt joint of the carbon steel pipes is strengthened. An extension sleeve 12 is fixedly sleeved on the inner circular wall surface of the inner pipe 1. The extension sleeve 12 is made of PVP hose material. By providing the extension sleeve 12, when the staff butt joints multiple sections of carbon steel pipes, the extension sleeve 12 will be inserted into the inner pipe 1 of the next section of carbon steel pipe, thereby preventing gas from leaking through the butt joint of the carbon steel pipes. A protective sleeve 5 is fixedly sleeved on the outer circular wall surface of the outer pipe 2. The protective sleeve 5 is made of asphalt material. By providing the protective sleeve 5, the outer pipe 2 is protected. Corrosion-resistant coatings are respectively applied on the surfaces of the first connecting disc 3 and the second connecting disc 4. The corrosion-resistant coatings are epoxy corrosion-resistant coatings, which is convenient for improving the service life of the first connecting disc 3 and the second connecting disc 4.

[0023] Working principle: Please refer to Figures 1-4 As shown in the figure, by providing the second connecting disc 4 and the protective sleeve 5, during use, the staff aligns the first connecting disc 3 of the next section of carbon steel pipe with the second connecting disc 4 of the previous section of carbon steel pipe, and uses bolts and nuts to fix the two sections of carbon steel pipes through the connecting holes 6, thereby butt-jointing and installing the two sections of carbon steel pipes. During this process, since only the fixing rod 10, the connecting rod 17, and the connecting ring 18 are made of carbon steel during the manufacturing process of the carbon steel pipe, the overall weight of the carbon steel pipe is significantly reduced compared to ordinary gas carbon steel pipes. At the same time, during use, the carbon steel support part composed of the fixing rod 10, the connecting rod 17, and the connecting ring 18 acts between the outer pipe 2 and the inner pipe 1. Therefore, the strength of the inner pipe 1 and the outer pipe 2 will not be significantly reduced during use. When the gas pressure inside the inner pipe 1 is relatively high, the inner pipe 1 made of PVP hose material will deform due to the pressure. At this time, the deformed part on the surface of the inner pipe 1 will drive the connecting column 16 and the pressing plate 14 to move. Then, the pressing plate 14 will squeeze the spring 13. At this time, the resilience of the spring 13 will push the connecting column 16 and the inner pipe 1 to reset, and offset the gas pressure inside the inner pipe 1, thereby preventing the inner pipe 1 from being damaged due to excessive pressure during use, thus achieving the effect of reducing the weight of the carbon steel pipe and facilitating the staff to butt-joint and install multiple sections of carbon steel pipes.

[0024] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin-walled lightweight carbon steel pipe for fire-fighting gas, characterized in that, Including: An inner tube (1), an outer tube (2) is arranged on the outer circumferential wall surface of the inner tube (1), a first connection disk (3) is fixedly sleeved on the outer circumferential wall surface of the outer tube (2), and a second connection disk (4) is fixedly sleeved on the outer circumferential wall surface of the outer tube (2); A docking component, the docking component is respectively arranged at one end of the first connection disk (3) and the second connection disk (4) for docking multiple sections of the inner tube (1) and the outer tube (2).

2. A thin-walled lightweight carbon steel pipe for fire-fighting gas according to claim 1, characterized in that, The docking component includes: a plurality of connection holes (6), the plurality of connection holes (6) are respectively opened at one end of the first connection disk (3) and the second connection disk (4), a plurality of fixing rods (10) are fixedly installed on the inner circumferential wall surface of the outer tube (2), a plurality of connecting rods (17) are fixedly installed between the plurality of fixing rods (10), connection rings (18) are fixedly installed at both ends of the plurality of fixing rods (10), the outer circumferential wall surface of the inner tube (1) is fixedly installed with the fixing rods (10), the connecting rods (17) and the connection rings (18) respectively, a plurality of mounting tubes (11) are fixedly installed on the inner circumferential wall surface of the outer tube (2), a spring (13) is movably sleeved on the inner circumferential wall surface of the mounting tube (11), one end of the spring (13) is fixedly installed on the inner circumferential wall surface of the outer tube (2), a pressing plate (14) is movably sleeved on the inner circumferential wall surface of the mounting tube (11), the top surface of the pressing plate (14) is fixedly installed with the spring (13), a connection column (16) is fixedly installed on the bottom surface of the pressing plate (14), and the bottom surface of the connection column (16) is fixedly installed on the outer circumferential wall surface of the inner tube (1).

3. A thin-walled lightweight carbon steel pipe for fire protection gas according to claim 2, characterized in that: A limiting ring (15) is fixedly sleeved on the inner circumferential wall surface of the mounting tube (11), and the inner circumferential wall surface of the limiting ring (15) is movably sleeved with the connection column (16).

4. A thin-walled lightweight carbon steel pipe for fire protection gas, as claimed in claim 2, wherein: A sealing groove (8) is opened at one end of the first connection disk (3), a sealing ring (9) is fixedly sleeved on the inner circumferential wall surface of the sealing groove (8), an embedding ring (7) is fixedly installed at one end of the second connection disk (4), and the embedding ring (7) is movably sleeved with the inner circumferential wall surface of the sealing groove (8).

5. A thin-walled lightweight carbon steel pipe for fire protection gas, according to claim 2, characterized in that: An extension sleeve (12) is fixedly sleeved on the inner circumferential wall surface of the inner tube (1).

6. A thin-walled lightweight carbon steel pipe for fire-fighting gas according to claim 2, characterized in that: A protective sleeve (5) is fixedly sleeved on the outer circumferential wall surface of the outer tube (2).

7. The thin-walled lightweight carbon steel pipe for fire-fighting gas according to claim 2, characterized in that: Corrosion-resistant coatings are respectively applied to the surfaces of the first connection disk (3) and the second connection disk (4).

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