Epoxy resin coating composite steel pipe with wear-resistant inner wall

Abstract

The utility model discloses an epoxy resin coating composite steel pipe with an abrasion-resistant inner wall, which comprises a pipe body, a lining pipe is arranged on the inner side of the pipe body, epoxy resin layers are respectively sprayed and solidified inside and outside the pipe body and the lining pipe, and a slot is arranged on the inner side of the pipe body. According to the epoxy resin coating composite steel pipe with the wear-resistant inner wall, when the epoxy resin coating composite steel pipe is installed and used, the multiple sets of inserting strips fixed to the outer side of the lining pipe can correspond to the inserting grooves in the inner side of the pipe body, and after the lining pipe is inserted into the pipe body, when a pipeline is installed and used, through the double-layer structure of the lining pipe and the pipe body, the inner wall of the lining pipe is not abraded; the thickness of the steel pipe can be increased, the interior of the steel pipe is subjected to wear-resistant treatment, the service life of the steel pipe is prolonged, the inner lining pipe can be replaced during use, the interior of the composite steel pipe is conveniently subjected to wear-resistant treatment, and the problem that the interior of the composite steel pipe is not convenient to be subjected to wear-resistant treatment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipes, in particular to a composite steel pipe with an epoxy resin coating whose inner wall is wear-resistant. Background Art

[0002] Epoxy resin composite steel pipe is a steel-plastic composite product with steel pipe as the base pipe and plastic powder as the coating material. A plastic layer is melt-coated on the inner surface and a plastic layer or other material anti-corrosion layer is melt-coated on the outer surface. The epoxy resin coating can make it have excellent corrosion resistance and is widely used.

[0003] However, when the epoxy resin coated composite steel pipe is in use, when the fluid containing particles and other foreign matter circulates inside the steel pipe, it will cause gradual wear to the inside of the composite steel pipe. After a long period of use, it will cause certain wear to the inside of the steel pipe, resulting in a reduction in the life of the steel pipe. There are shortcomings, and it is not convenient to perform wear-resistant treatment on the inside of the composite steel pipe.

[0004] Now, a novel composite steel pipe with epoxy resin coating having wear-resistant inner wall is proposed to solve the above-mentioned shortcomings. Utility Model Content

[0005] The utility model aims to provide an epoxy resin coated composite steel pipe with a wear-resistant inner wall, so as to solve the problem in the above-mentioned background technology that it is inconvenient to carry out wear-resistant treatment on the inside of the composite steel pipe.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a composite steel pipe with an epoxy resin coating having a wear-resistant inner wall, comprising a pipe body, an inner lining pipe being arranged on the inner side of the pipe body, the inside and the outside of the pipe body and the inner lining pipe being respectively sprayed and cured with an epoxy resin layer, a slot being provided on the inner side of the pipe body, and an insert being welded and fixed on the outer side of the inner lining pipe.

[0007] Preferably, the slots and the inserts are arranged in a plurality of groups at equal intervals in a ring shape on the inner side of the tube body and the outer side of the liner tube, respectively, and the inserts run through the interior of the slots.

[0008] Preferably, the liner pipe runs through the interior of the pipe body.

[0009] Preferably, a first protective cover is sleeved on the left side of the outside of the tube body, and a second protective cover is sleeved on the right side of the outside of the tube body.

[0010] Preferably, a threaded hole is opened inside the right side of the second shield, a screw is provided on the right side of the second shield, and a connector is provided on the left side of the screw, a locking ring is connected to the external thread of the screw, six groups of the screws are evenly spaced in a ring on the right side of the second shield, a socket is opened inside the left side of the first shield, and six groups of the sockets are evenly spaced in a ring inside the left side of the first shield, and the screw passes through the inside of the socket.

[0011] Preferably, a heat insulating jacket is provided on the outside of the tube body, and a connecting belt is fixed to the top of the heat insulating jacket, a fixing belt is fixed to the bottom of the rear end of the heat insulating jacket, and a fixing frame is movably connected to the fixing belt.

[0012] Preferably, the connecting belts and the fixing frames are arranged in multiple groups at equal intervals.

[0013] Preferably, mounting flanges are respectively welded and fixed on both sides of the exterior of the tube body, and a plurality of groups of through holes are provided at equal intervals inside the mounting flanges.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the epoxy resin coating composite steel pipe with wear-resistant inner wall not only realizes the convenience of wear-resistant treatment of the inside of the composite steel pipe, realizes the convenience of waterproofing and dustproofing the connection of the steel pipe, but also realizes the convenience of heat insulation protection of the outside of the steel pipe;

[0015] (1) By providing a pipe body, a slot, an insert and an inner liner, when the epoxy resin coated composite steel pipe is installed and used, the multiple groups of inserts fixed on the outer side of the inner liner can be placed in the slots on the inner side of the pipe body. After the inner liner is inserted into the pipe body, when the pipeline is installed and used, the thickness of the steel pipe can be increased by the double-layer structure of the inner liner and the pipe body. At the same time, the epoxy resin layer provided on the steel pipe also has good wear resistance. The two can be used together to perform wear resistance treatment on the inner wall of the steel pipe, thereby extending the service life of the steel pipe. The inner liner can be replaced during use, which is convenient for performing wear resistance treatment on the inside of the composite steel pipe.

[0016] (2) By providing a tube body, a first shield, a second shield, a threaded hole, a connector, a socket, a screw and a locking ring, after the two sets of steel pipes are connected and fixed, the first shield and the second shield can be respectively moved inwards at the connection to engage, and the provided screw will be simultaneously inserted into the inside of the socket, and then the locking ring can be respectively screwed into the outside of the screw on the right side of the first shield and locked, and the first shield and the second shield can be auxiliary fixed to the outside of the connection between the two sets of tube bodies. The first shield and the second shield can be provided to seal the external auxiliary outer cover of the mounting flange and the connecting bolt member, so as to be waterproof and dustproof, and reduce the corrosion and rust of the mounting flange and the bolt locking member at the connection;

[0017] (2) By providing a thermal insulation jacket, a pipe body, a connecting belt, a fixing frame and a fixing belt, when the steel pipe is installed and used, the thermal insulation jacket can be wrapped around the outside of the pipe body, and then the thermal insulation jacket can be tied and fixed to the outside of the pipe body by inserting multiple sets of connecting belts into the fixing frame accordingly. The thermal insulation jacket can be used to provide auxiliary insulation and heat preservation for the steel pipe and the internal conveying fluid, thereby reducing the temperature impact on the internal conveying fluid of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a side-view enlarged structural schematic diagram of the inner liner pipe of the utility model;

[0020] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a first protective cover of the utility model;

[0021] Figure 4 This is a schematic diagram of the partial structure of the heat-insulating jacket of the utility model.

[0022] In the figure: 1. mounting flange; 2. pipe body; 3. first protective cover; 4. heat-insulating jacket; 5. connecting belt; 6. epoxy resin layer; 7. second protective cover; 8. fixing frame; 9. fixing belt; 10. slot; 11. insert; 12. through hole; 13. liner pipe; 14. threaded hole; 15. connector; 16. jack; 17. screw; 18. locking ring. DETAILED DESCRIPTION

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

[0024] Example 1: Please refer to Figure 1-4 A composite steel pipe with an epoxy resin coating having a wear-resistant inner wall, comprising a pipe body 2, an inner liner pipe 13 is arranged on the inner side of the pipe body 2, epoxy resin layers 6 are sprayed and cured on the inner and outer sides of the pipe body 2 and the inner liner pipe 13, a slot 10 is opened on the inner side of the pipe body 2, and an insert 11 is welded and fixed on the outer side of the inner liner pipe 13;

[0025] The slots 10 and the inserts 11 are respectively arranged in a plurality of groups at equal intervals on the inner side of the tube body 2 and the outer side of the inner liner 13. The inserts 11 penetrate the interior of the slots 10, and the inner liner 13 penetrates the interior of the tube body 2.

[0026] Specifically, Figure 1 and Figure 2 As shown, the multiple groups of insert strips 11 fixed on the outside of the set inner liner tube 13 can be placed in the corresponding slots 10 on the inner side of the pipe body 2. After the inner liner tube 13 is inserted into the pipe body 2, when the pipeline is installed and used, the double-layer structure of the set inner liner tube 13 and the pipe body 2 can increase the thickness of the steel pipe, perform wear-resistant treatment on the inside of the steel pipe, and extend the service life of the steel pipe.

[0027] Embodiment 2: A first shield 3 is sleeved on the left side of the outside of the tube body 2, a second shield 7 is sleeved on the right side of the outside of the tube body 2, a threaded hole 14 is provided inside the right side of the second shield 7, a screw 17 is provided on the right side of the second shield 7, and a connector 15 is provided on the left side of the screw 17, a locking ring 18 is connected to the external thread of the screw 17, six groups of screws 17 are arranged in an annular manner at equal intervals on the right side of the second shield 7, a plug hole 16 is provided inside the left side of the first shield 3, and six groups of plug holes 16 are arranged in an annular manner at equal intervals on the inner side of the left side of the first shield 3, and the screw 17 passes through the inside of the plug hole 16;

[0028] Specifically, Figure 1 and Figure 3 As shown, after the two groups of steel pipes are connected and fixed, the first shield 3 and the second shield 7 can be moved inwards at the connection to engage, and the provided screw 17 will be inserted into the inside of the jack 16 at the same time. Then, the locking ring 18 can be screwed into the outside of the screw 17 on the right side of the first shield 3 and locked, and the first shield 3 and the second shield 7 can be auxiliary fixed to the outside of the connection between the two groups of pipe bodies 2. The first shield 3 and the second shield 7 can be provided to seal the external auxiliary outer cover of the mounting flange 1 and the connecting bolt parts to prevent water and dust.

[0029] Embodiment 3: A heat insulating jacket 4 is provided on the outside of the tube body 2, and a connecting belt 5 is fixed to the top of the heat insulating jacket 4, a fixing belt 9 is fixed to the bottom of the rear end of the heat insulating jacket 4, and a fixing frame 8 is movably connected to the fixing belt 9, and multiple groups of connecting belts 5 and fixing frames 8 are respectively arranged at equal intervals, and mounting flanges 1 are respectively welded and fixed on both sides of the outside of the tube body 2, and multiple groups of through holes 12 are opened at equal intervals inside the mounting flange 1;

[0030] Specifically, Figure 1 and Figure 4 As shown, the thermal insulation jacket 4 can be wrapped around the outside of the pipe body 2, and then the thermal insulation jacket 4 can be tied and fixed to the outside of the pipe body 2 by inserting multiple sets of connecting belts 5 into the fixing frame 8 accordingly. The thermal insulation jacket 4 can be used to assist in thermal insulation and heat preservation of the steel pipe and the internal conveying fluid.

[0031] Working principle: When the utility model is installed and used, the multiple groups of inserting strips 11 fixed on the outside of the set inner liner tube 13 can be placed in the slots 10 on the inner side of the pipe body 2. After the inner liner tube 13 is inserted into the pipe body 2, when the pipeline is installed and used, the double-layer structure of the set inner liner tube 13 and the pipe body 2 can increase the thickness of the steel pipe, perform wear-resistant treatment on the inside of the steel pipe, and extend the service life of the steel pipe. The inner liner tube 13 can be replaced when used. At the same time, after the two groups of steel pipes are connected and fixed, the first shield 3 and the second shield 7 can be moved inward at the connection to engage, and the set screw 17 will be inserted into the inside of the jack 16 at the same time, and then the first shield 3 can be respectively inserted into the second shield 7. On the right side, after the locking ring 18 is screwed into the outside of the screw 17 and locked, the first protective cover 3 and the second protective cover 7 can be assisted to be fixed to the outside of the connection between the two groups of pipe bodies 2. The first protective cover 3 and the second protective cover 7 can be used to seal the external auxiliary outer cover of the mounting flange 1 and the connecting bolts to prevent water and dust. When the steel pipe is installed and used, the thermal insulation jacket 4 can be wrapped around the outside of the pipe body 2, and then the thermal insulation jacket 4 can be tied and fixed to the outside of the pipe body 2 by correspondingly inserting multiple groups of connecting belts 5 into the fixing frame 8. The thermal insulation jacket 4 can be used to assist in heat insulation and heat preservation of the steel pipe and the internal conveying fluid.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A composite steel pipe with an epoxy resin coating having a wear-resistant inner wall, comprising a pipe body (2), characterized in that: An inner lining tube (13) is arranged on the inner side of the tube body (2), and epoxy resin layers (6) are sprayed and cured on the inside and outside of the tube body (2) and the inner lining tube (13), respectively. A slot (10) is provided on the inner side of the tube body (2), and an insert (11) is welded and fixed on the outer side of the inner lining tube (13).

2. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 1, characterized in that: The slots (10) and the inserts (11) are respectively arranged in a plurality of groups at equal intervals in an annular manner on the inner side of the tube body (2) and the outer side of the liner tube (13), and the inserts (11) penetrate the interior of the slots (10).

3. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 1, characterized in that: The inner lining tube (13) penetrates the interior of the tube body (2).

4. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 1, characterized in that: A first protective cover (3) is sleeved on the left side of the exterior of the tube body (2), and a second protective cover (7) is sleeved on the right side of the exterior of the tube body (2).

5. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 4, characterized in that: A threaded hole (14) is provided inside the right side of the second shield (7), a screw rod (17) is provided on the right side of the second shield (7), and a connector (15) is provided on the left side of the screw rod (17), a locking ring (18) is connected to the external thread of the screw rod (17), six groups of the screw rods (17) are arranged in an annular manner at equal intervals on the right side of the second shield (7), a socket (16) is provided inside the left side of the first shield (3), and six groups of the socket (16) are arranged in an annular manner at equal intervals on the inside of the left side of the first shield (3), and the screw rod (17) passes through the inside of the socket (16).

6. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 1, characterized in that: A heat insulating jacket (4) is provided on the outside of the tube body (2), and a connecting belt (5) is fixed to the top of the heat insulating jacket (4), a fixing belt (9) is fixed to the bottom of the rear end of the heat insulating jacket (4), and a fixing frame (8) is movably connected to the fixing belt (9).

7. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 6, characterized in that: The connecting belts (5) and the fixing frames (8) are arranged in multiple groups at equal intervals.

8. The epoxy resin coated composite steel pipe with wear-resistant inner wall according to claim 1, characterized in that: Mounting flanges (1) are respectively welded and fixed on both sides of the exterior of the tube body (2), and a plurality of groups of through holes (12) are provided at equal intervals inside the mounting flanges (1).

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