Thermal insulation plastic-coated composite steel pipe

Abstract

The utility model discloses a heat preservation plastic-coated composite steel pipe which comprises an outer pipe assembly and an inner pipe assembly, the inner pipe assembly is arranged inside the outer pipe assembly, the outer pipe assembly comprises an outer pipe body and a heat preservation layer, and the heat preservation layer is arranged on the outer surface of the outer pipe body. According to the heat-preservation plastic-coated composite steel pipe, the outer pipe body and the inner pipe body are integrated in a threaded mode, the heat-preservation layer and the waterproof layer are arranged on the outer wall of the outer pipe body, and the corrosion-resistant layer is arranged on the inner wall of the inner pipe body, so that the heat-preservation plastic-coated composite steel pipe is easy to replace after being locally damaged, and the effects of reducing replacement loss and facilitating recycling are achieved; the outer pipe body and the inner pipe body are arranged, the gap layer is arranged between the outer pipe body and the inner pipe body, the gap layer is easy to vacuumize, the heat preservation performance of the device is improved, and the multiple inclined blocks are arranged on the outer surface of the outer pipe body, so that the inclined blocks can assist a flange and threaded holes in the side face of an outer pipe assembly to rotate, adjust and calibrate and temporarily bear the flange.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field, concretely is a kind of thermal insulation plastic-coated composite steel pipe. BACKGROUND

[0002] Thermal insulation plastic-coated composite steel pipe is a kind of pipe material combined with the characteristics of thermal insulation and plastic coating, widely used in many fields, which is provided with a corrosion-resistant layer and an external thermal insulation layer inside and outside the pipe body, so that the pipe body can have corrosion resistance and thermal insulation effect during transmission.

[0003] The prior art achieves thermal insulation and corrosion resistance by providing different functional layers inside and outside the pipe body, but inevitably has deficiencies in actual use, including the lack of assembly mechanism, which makes it inconvenient to replace and recycle after pipe body and partial coating are damaged, resulting in large replacement loss. Therefore, a thermal insulation plastic-coated composite steel pipe is proposed to solve the existing problems. SUMMARY

[0004] To overcome the deficiencies of the prior art, the utility model provides a thermal insulation plastic-coated composite steel pipe, which solves the problem of lack of assembly mechanism, which makes it inconvenient to replace and recycle after pipe body and partial coating are damaged.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a thermal insulation plastic-coated composite steel pipe, comprising an outer pipe assembly and an inner pipe assembly, the inner pipe assembly is arranged inside the outer pipe assembly, the outer pipe assembly comprises an outer pipe body and a thermal insulation layer, the thermal insulation layer is arranged on the outer surface of the outer pipe body, the surface of the thermal insulation layer is provided with a waterproof layer, the inner pipe assembly comprises an inner pipe body and a corrosion-resistant layer, the corrosion-resistant layer is arranged on the inner wall of the inner pipe body, the two sides of the surface of the inner pipe body are respectively fixedly connected with a large-diameter external thread cover and a small-diameter external thread cover, the two sides of the inner wall of the outer pipe body are respectively provided with a first internal thread sleeve and a second thread sleeve, a gap layer is arranged between the outer pipe body and the inner pipe body, and flanges are installed on both ends of the inner pipe body through bolts.

[0006] Preferably, a threaded hole is formed in the top of the outer pipe body, a female connector is installed inside the threaded hole, and a threaded plug is threadedly connected inside the threaded hole.

[0007] Preferably, a plurality of mounting plates are fixedly connected around the surface of the outer pipe body at equal distances, a slanted block is slidably connected to one side of the mounting plate, and a ball is arranged on the surface of the slanted block.

[0008] Preferably, a sliding slot is formed in one side of the mounting plate, a sliding block is slidably connected inside the sliding slot, a return spring is fixedly connected between the sliding block and the sliding slot, and one side of the sliding block is fixedly connected to the surface of the slanted block.

[0009] Preferably, the large-diameter external thread cover is provided with a first stepped stop groove on one side, the inner wall of the external pipe body is fixed with a first stepped stop block, the small-diameter external thread cover is provided with a second stepped stop groove on one side, and the second threaded sleeve is fixedly connected with a second stepped stop block on one side.

[0010] Advantages

[0011] The utility model provides a heat preservation plastic coating composite steel pipe, has the following advantages compared with prior art: the utility model discloses a threaded integration of outer pipe body and inner pipe body, and the outer wall of outer pipe body is provided with heat preservation layer and waterproof layer, and the inner wall of inner pipe body is provided with corrosion -resistant layer, makes the device easy to replace after local damage, reaches the effect of reducing the replacement loss, reaches the effect of convenient recycling, and the gap layer is arranged between the outer pipe body and the inner pipe body, so that the gap layer is easy to be pumped by vacuum, the heat preservation of the device is improved, and a plurality of inclined blocks are arranged on the outer surface of the outer pipe body, so that the inclined blocks can assist the flange and the threaded hole on the side of the outer pipe assembly to rotate and adjust and calibrate, and the flange is temporarily received. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the external structure schematic diagram of the utility model;

[0013] Figure 2 It is the section view of the utility model outer pipe assembly structure;

[0014] Figure 3 It is the schematic diagram of the utility model outer pipe assembly structure;

[0015] Figure 4 It is the schematic diagram of the utility model inner pipe assembly structure;

[0016] Figure 5 It is the utility model Figure 2 It is the partial close -up view of A place in the utility model;

[0017] Figure 6 It is the partial close -up view of B place in the utility model; Figure 2

[0018] It is the partial close -up view of C place in the utility model; Figure 7 Figure 2 It is the partial close -up view of D place in the utility model;

[0019] Figure 8 Figure 2 It is the partial close -up view of E place in the utility model;

[0020] Figure 9 It is the partial close -up view of E place in the utility model; Figure 2

[0021] It is the partial close -up view of E place in the utility model; Figure 10 Figure 2 ​​​A local enlarged view at F.

[0022] In the figure: 1, outer pipe assembly; 101, outer pipe body; 102, heat preservation layer; 103, waterproof layer; 2, inner pipe assembly; 201, inner pipe body; 202, corrosion resistant layer; 3, large-diameter external thread cover; 4, small-diameter external thread cover; 5, first internal thread sleeve; 6, second thread sleeve; 7, gap layer; 8, threaded hole; 9, negative pressure extraction interface; 10, threaded plug; 11, flange; 12, mounting plate; 13, inclined block; 14, ball; 15, sliding groove; 16, sliding block; 17, return spring; 18, first stepped stop groove; 19, first stepped stop block; 20, second stepped stop groove; 21, second stepped stop block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0024] Please refer to Figures 1-10 The utility model provides a technical scheme: a heat preservation plastic coating composite steel pipe, which comprises an outer pipe assembly 1 and an inner pipe assembly 2, the inner pipe assembly 2 is arranged in the inside of the outer pipe assembly 1, the outer pipe assembly 1 comprises an outer pipe body 101 and a heat preservation layer 102, the heat preservation layer 102 is arranged on the outer surface of the outer pipe body 101, the surface of the heat preservation layer 102 is provided with a waterproof layer 103, the inner pipe assembly 2 comprises an inner pipe body 201 and a corrosion resistant layer 202, the corrosion resistant layer 202 is arranged on the inner wall of the inner pipe body 201, as detailed explanation: the heat preservation layer 102 is hard polyurethane foam plastic, the waterproof layer 103 is high-density polyethylene, and the corrosion resistant layer 202 is epoxy resin powder coating.

[0025] Further, in order to reduce the replacement loss, the two sides of the surface of the inner pipe body 201 are fixedly connected with a large-diameter external thread cover 3 and a small-diameter external thread cover 4 respectively, the two sides of the inner wall of the outer pipe body 101 are provided with a first internal thread sleeve 5 and a second thread sleeve 6 respectively, in order to facilitate vacuum heat preservation, the gap layer 7 is arranged between the outer pipe body 101 and the inner pipe body 201, the two ends of the inner pipe body 201 are provided with flanges 11 through bolts, the top of the outer pipe body 101 is provided with a threaded hole 8, the negative pressure extraction interface 9 is arranged in the threaded hole 8, the threaded plug 10 is screw-connected in the threaded hole 8, the first stepped stop groove 18 is arranged on one side of the large-diameter external thread cover 3, the first stepped stop block 19 is fixedly arranged on the inner wall of the outer pipe body 101, the second stepped stop groove 20 is arranged on one side of the small-diameter external thread cover 4, and the second stepped stop block 21 is fixedly connected on one side of the second thread sleeve 6.

[0026] Further, for the convenience of flange 11 is accepted and auxiliary calibration, the surface of the outer tube body 101 around equidistant fixed connection with several mounting plates 12, one side of the mounting plate 12 is connected with the inclined block 13, the surface of the inclined block 13 is provided with the ball 14, one side of the mounting plate 12 is provided with the sliding slot 15, the inside of the sliding slot 15 is connected with the sliding block 16, and the sliding block 16 and the sliding slot 15 are fixedly connected with the reset spring 17, one side of the sliding block 16 is fixedly connected with the surface of the inclined block 13.

[0027] When assembling, the outer tube body 101 is sleeved on the outer wall of the inner tube body 201, and the first inner threaded sleeve 5 and the large-diameter outer threaded cover 3 are threadedly connected with the second threaded sleeve 6 and the small-diameter outer threaded cover 4, so that the outer tube body 101 and the inner tube body 201 are integrated, then the flange 11 is buckled on the plane side of the inclined blocks 13, so that the flange 11 is accepted, then the flange 11 is rotated, so that the flange 11 is calibrated with the threaded hole, and then fixed by the bolt, then the vacuum equipment is connected with the vacuum interface 9, and the inside of the gap layer 7 is vacuumized.

Claims

1. An insulating plastic coated composite steel pipe comprising an outer pipe assembly (1) and an inner pipe assembly (2) disposed inside the outer pipe assembly (1), characterized in that: The outer tube assembly (1) includes an outer tube body (101) and a heat preservation layer (102), the heat preservation layer (102) is arranged on the outer surface of the outer tube body (101), the surface of the heat preservation layer (102) is provided with a waterproof layer (103), the inner tube assembly (2) includes an inner tube body (201) and a corrosion-resistant layer (202), the corrosion-resistant layer (202) is arranged on the inner wall of the inner tube body (201), the surface of the inner tube body (201) is fixedly connected with a large-diameter external thread cover (3) and a small-diameter external thread cover (4) on both sides respectively, the inner wall of the outer tube body (101) is provided with a first internal thread sleeve (5) and a second thread sleeve (6) on both sides respectively, a gap layer (7) is arranged between the outer tube body (101) and the inner tube body (201), and the both ends of the inner tube body (201) are provided with flanges (11) through bolts.

2. The heat-insulated plastic coated composite steel pipe according to claim 1, characterized in that: The top of the outer tube body (101) is provided with a threaded through hole (8), the threaded through hole (8) is internally provided with a negative interface (9), and the threaded through hole (8) is internally screwed with a threaded plug (10).

3. The heat-insulated plastic coated composite steel pipe according to claim 1, characterized in that: The surface of the outer tube body (101) is fixedly connected with a plurality of mounting plates (12) at equal distances, one side of the mounting plate (12) is slidably connected with an inclined block (13), and the surface of the inclined block (13) is provided with a ball (14).

4. The insulating plastic coated composite steel pipe according to claim 3, characterized in that: One side of the mounting plate (12) is provided with a sliding groove (15), the sliding groove (15) is slidably connected with a sliding block (16), and the sliding block (16) and the sliding groove (15) are fixedly connected with a return spring (17), and one side of the sliding block (16) is fixedly connected with the surface of the inclined block (13).

5. The insulating plastic coated composite steel pipe according to claim 1, characterized in that: One side of the large-diameter external thread cover (3) is provided with a first stepped stop groove (18), the inner wall of the outer tube body (101) is fixedly provided with a first stepped stop block (19), one side of the small-diameter external thread cover (4) is provided with a second stepped stop groove (20), and one side of the second thread sleeve (6) is fixedly connected with a second stepped stop block (21).

Images