High-temperature-resistant pipe

Abstract

The utility model discloses a high-temperature-resistant pipe which comprises a pipe body and a flange piece. The flange pieces are installed on the two sides of the pipe, a plurality of screw holes are formed in the peripheries of the upper sides of the flange pieces, the pipe is composed of an outer-layer pipe and an inner-layer pipe, a filler cavity is formed between the outer-layer pipe and the inner-layer pipe, the filler cavity is filled with heat insulation filler, the outer-layer pipe is composed of an outer-layer base pipe and an outer high-temperature-resistant layer, and the outer-layer base pipe is composed of an outer-layer base pipe and an outer high-temperature-resistant layer. The outer high-temperature-resistant layer is attached to the outer side of the outer-layer base pipe, the inner-layer pipe is composed of an inner-layer base pipe and an inner high-temperature-resistant layer, and the inner high-temperature-resistant layer is attached to the inner side of the inner-layer base pipe. During use, the high-temperature resistance of the inner-layer pipe is improved through the inner high-temperature-resistant layer in the inner-layer pipe, the high-temperature resistance of the outer-layer pipe is improved through the outer high-temperature-resistant layer of the outer-layer pipe, the filler cavity is filled with the heat-insulating filler, and heat insulation is conducted between the inner-layer pipe and the outer-layer pipe through the heat-insulating filler; therefore, the heat insulation effect of the pipe groove can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature resistant pipes, in particular to a high-temperature resistant pipe. Background Art

[0002] Pipes are the materials used to make pipe fittings. Different pipe fittings require different pipe materials, and the quality of the pipe material directly determines the quality of the fitting. These pipes are commonly used in construction projects, power plants, chemical plants, and other applications.

[0003] Chinese patent number CN202021610493.8 discloses a fluid conveying device, specifically a high-temperature resistant pipe. The device comprises a tubular body. The body comprises a steel support tube, the inner surface of which is covered with a high-temperature resistant layer, and the outer surface of which is covered with a heat-insulating layer.

[0004] When the existing technology is used, the heat insulation layer is relatively thin, and the heat insulation effect is poor after long-term use. In addition, only the inside of the pipe can be treated to resist high temperature, and the outside cannot be treated to resist high temperature. Utility Model Content

[0005] The purpose of the utility model is to provide a high temperature resistant pipe to solve the problems raised in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant pipe, comprising a pipe and a flange; the flange is installed on both sides of the pipe, and a plurality of screw holes are provided around the upper side of the flange; the pipe is composed of an outer layer tube and an inner layer tube, and a stuffing cavity is provided between the outer layer tube and the inner layer tube, and the stuffing cavity is filled with a heat-insulating stuffing; the outer layer tube is composed of an outer layer base tube and an external high-temperature resistant layer, and the external high-temperature resistant layer is attached to the outside of the outer layer base tube; the inner layer tube is composed of an inner layer base tube and an internal high-temperature resistant layer, and the internal high-temperature resistant layer is attached to the inside of the inner layer base tube.

[0007] Preferably, a support plate is provided inside the filler cavity, and the support plate is installed outside the inner tube and inside the outer tube.

[0008] Preferably, a soft metal pad is provided on the outer side of the flange, and the soft metal pad is welded to one side of the flange.

[0009] Preferably, a slot is provided on one side of the flange at one end of the pipe, and a plug is installed on one side of the flange at the other end of the pipe, and the plug is inserted into the slot.

[0010] Preferably, an external corrosion-resistant layer is provided outside the external high-temperature resistant layer, and the external corrosion-resistant layer is attached to the outside of the external high-temperature resistant layer.

[0011] Preferably, an internal corrosion-resistant layer is provided outside the internal high-temperature resistant layer, and the internal corrosion-resistant layer is attached to the outside of the internal high-temperature resistant layer.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. When in use, the inner high temperature resistant layer inside the inner tube increases the high temperature resistance of the inner tube, and the outer high temperature resistant layer outside the outer tube increases the high temperature resistance of the outer tube. The heat insulation filler is filled in the filler cavity, and the heat insulation filler is used to insulate the inner and outer tubes, thereby effectively improving the heat insulation effect of the pipe groove;

[0014] 2. The support plate is used to support the inner and outer tubes to avoid deformation of the outer tube during use;

[0015] 3. When installing the pipes, insert the plug into the slot to increase the contact area between the flanges and increase the stability of the flanges during installation;

[0016] 4. The setting of the internal corrosion-resistant layer is used to increase the corrosion resistance of the inner tube, reduce the corrosion of the inner tube during use, and extend the service life of the inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a side structural diagram of the present utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the interior of the cross section of the present invention.

[0022] In the figure: 1. Pipe; 2. Outer pipe; 3. Screw hole; 4. Soft metal gasket; 5. Flange; 6. Inner pipe; 7. External corrosion-resistant layer; 8. External high-temperature resistant layer; 9. Outer base pipe; 10. Thermal insulation filler; 11. Inner base pipe; 12. Internal high-temperature resistant layer; 13. Internal corrosion-resistant layer; 14. Slot; 15. Plug; 16. Support plate; 17. Filler cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 In the embodiment of the present invention, a high-temperature resistant pipe includes a pipe 1 and a flange 5; the flange 5 is installed on both sides of the pipe 1, and a plurality of screw holes 3 are provided around the upper side of the flange 5. The pipe 1 is composed of an outer tube 2 and an inner tube 6. A filling cavity 17 is provided between the outer tube 2 and the inner tube 6. The filling cavity 17 is filled with a heat-insulating filler 10. The outer tube 2 is composed of an outer base tube 9 and an outer high-temperature resistant layer 8. The outer high-temperature resistant layer 8 is attached to the outside of the outer base tube 9. The inner tube 6 is composed of an inner base tube 11 and an inner high-temperature resistant layer 12. The inner high-temperature resistant layer 12 is attached to the inside of the inner base tube 11; a support plate 16 is provided inside the filling cavity 17. The support plate 16 is installed on the outside of the inner tube 6 and inside the outer tube 2. The support plate 16 is provided to support the inner tube 6 and the outer tube 2 to avoid deformation of the outer tube 2 during use.

[0025] A soft metal pad 4 is provided on the outside of the flange 5 and is welded to one side of the flange 5. The soft metal pad 4 is relatively soft in texture. When the flange 5 is installed, the soft metal pad 4 will be deformed under pressure to fill the gap between the flanges 5, making the installation between the flanges 5 tighter.

[0026] A slot 14 is provided on one side of the flange 5 at one end of the pipe 1, and a plug 15 is installed on one side of the flange 5 at the other end of the pipe 1. The plug 15 is inserted into the slot 14. When installing the pipes 1, the plug 15 is inserted into the slot 14, thereby increasing the contact area between the flanges 5 and increasing the stability of the flanges 5 during installation.

[0027] An external corrosion-resistant layer 7 is provided at the outer side of the external high-temperature resistant layer 8, and the external corrosion-resistant layer 7 is attached to the outer side of the external high-temperature resistant layer 8. The setting of the external corrosion-resistant layer 7 is used to increase the corrosion resistance inside the outer tube 2, reduce the corrosion suffered by the outer tube 2 during use, and extend the service life of the outer tube 2; an internal corrosion-resistant layer 13 is provided at the outer side of the internal high-temperature resistant layer 12, and the internal corrosion-resistant layer 13 is attached to the outer side of the internal high-temperature resistant layer 12. The setting of the internal corrosion-resistant layer 13 is used to increase the corrosion resistance inside the inner tube 6, reduce the corrosion suffered by the inner tube 6 during use, and extend the service life of the inner tube 6.

[0028] The working principle and usage process of the present invention are as follows: when the pipes 1 are connected, the flanges 5 between the adjacent pipes 1 are fixed by bolts, so that the pipes 1 can be fixed. When in use, the high temperature resistance of the inner pipe 6 is increased by the internal high temperature resistant layer 12 inside the inner pipe 6, and the high temperature resistance of the outer pipe 2 is increased by the external high temperature resistant layer 8 of the outer pipe 2. The heat insulating filler 10 is filled in the filler cavity 17, and the heat insulating filler 10 is used to insulate the inner pipe 6 and the outer pipe 2, thereby effectively improving the heat insulation effect of the pipe groove.

[0029] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-temperature resistant pipe, comprising a pipe (1) and a flange (5); characterized in that: The flange (5) is installed on both sides of the pipe (1), and a plurality of screw holes (3) are provided around the upper side of the flange (5). The pipe (1) is composed of an outer layer pipe (2) and an inner layer pipe (6). A stuffing cavity (17) is provided between the outer layer pipe (2) and the inner layer pipe (6), and the stuffing cavity (17) is filled with a heat-insulating stuffing (10). The outer layer pipe (2) is composed of an outer layer base pipe (9) and an outer high-temperature resistant layer (8), and the outer high-temperature resistant layer (8) is attached to the outer side of the outer layer base pipe (9). The inner layer pipe (6) is composed of an inner layer base pipe (11) and an inner high-temperature resistant layer (12), and the inner high-temperature resistant layer (12) is attached to the inner side of the inner layer base pipe (11).

2. The high temperature resistant pipe according to claim 1, characterized in that: A support plate (16) is provided inside the filler cavity (17), and the support plate (16) is installed outside the inner layer tube (6) and inside the outer layer tube (2).

3. The high temperature resistant pipe according to claim 1, characterized in that: A soft metal pad (4) is provided on the outside of the flange (5), and the soft metal pad (4) is welded to one side of the flange (5).

4. The high temperature resistant pipe according to claim 1, characterized in that: A slot (14) is provided on one side of the flange (5) at one end of the pipe (1), and a plug (15) is installed on one side of the flange (5) at the other end of the pipe (1), and the plug (15) is inserted into the slot (14).

5. The high temperature resistant pipe according to claim 1, characterized in that: An external corrosion-resistant layer (7) is provided outside the external high-temperature-resistant layer (8), and the external corrosion-resistant layer (7) is attached to the outside of the external high-temperature-resistant layer (8).

6. The high temperature resistant pipe according to claim 1, characterized in that: An internal corrosion-resistant layer (13) is provided outside the internal high-temperature resistant layer (12), and the internal corrosion-resistant layer (13) is attached to the outside of the internal high-temperature resistant layer (12).

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