Composite thermal insulation layer steel sleeve steel steam direct buried thermal insulation pipe

Abstract

The utility model discloses a kind of composite thermal insulation layer steel jacketed steam direct-buried thermal insulation pipe, including working inner tube, the surface of both ends of working inner tube is provided with reinforcing plate of equidistance distribution, the one end of reinforcing plate is connected with outer sheath, outer sheath and working inner tube between are provided with thermal insulation layer, thermal insulation layer and the side contact of reinforcing plate, the both ends of working inner tube are provided with connecting assembly, the surface of connecting seat two, connecting seat one and outer sheath is provided with auxiliary assembly, by the connecting assembly set in working inner tube, can effectively prevent the loosening and displacement caused by external pressure, further enhance the compactness of connection, effectively buffer the impact caused by soil settlement and thermal expansion and cold shrink, avoid the leakage caused by pressure change or connection loosening, simultaneously in the auxiliary assembly set in connecting assembly, not only can effectively adapt to complex topographic change, avoid the pipeline stress concentration and connection damage caused by topographic factor, also can enhance the sealing performance of connection.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation pipe technology, specifically to a composite thermal insulation layer steel-clad steel steam direct-buried thermal insulation pipe. Background Technology

[0002] Composite insulation layer steel-clad steel steam direct-buried insulated pipe is a high-efficiency and energy-saving pipeline widely used in projects such as centralized heating and industrial steam transportation. It has good thermal insulation performance, high temperature resistance and long service life, and is particularly suitable for underground direct burial.

[0003] However, the connection structure of the insulation pipe is prone to loosening or displacement under long-term operation or external pressure (such as soil settlement, thermal expansion and contraction). At the same time, the support structure of the insulation pipe cannot adapt to complex terrain changes, further aggravating the safety hazards at the connection.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In response to the problems in related technologies, this utility model proposes a composite insulation layer steel-clad steel steam direct-buried insulation pipe to solve the problems of loose or displaced connection structures and inability to adapt to complex terrain changes in existing insulation pipes, which exacerbate the safety hazards at the connection points.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A composite insulation layer steel-clad steel steam direct-buried insulated pipe includes a working inner pipe. Reinforcing plates are evenly distributed on both ends of the working inner pipe. One end of each reinforcing plate is connected to an outer sheath. An insulation layer is provided between the outer sheath and the working inner pipe, and the insulation layer contacts one side of the reinforcing plate. Connecting components are provided at both ends of the working inner pipe. Each connecting component includes a first connecting seat at each end of the working inner pipe, a second connecting seat on one side of the first connecting seat, and the interiors of the first and second connecting seats in contact with each other. Multiple limiting blocks are provided around the first and second connecting seats, with opposite sides of the limiting blocks in contact. Multiple snap-fit ​​grooves are provided inside both the first and second connecting seats, and snap-fit ​​blocks are provided inside the snap-fit ​​grooves. Auxiliary components are provided on the surfaces of the first and second connecting seats and the outer sheath.

[0008] Furthermore, in order to better fix and provide auxiliary support for the connection of the composite insulation layer steel-jacketed steam direct-buried insulation pipe, the auxiliary components include an outer sheath and a support seat on both the second and first connecting seats. A fixing seat is snapped onto the top of the support seat. An auxiliary groove is opened on the fixing seat and the support seat. A rotating rod is connected inside the auxiliary groove of the fixing seat, and an auxiliary rod is threaded onto the rotating rod.

[0009] Furthermore, to further improve the stability of the auxiliary rod, anti-loosening washers are provided on the auxiliary rod and the support base, with the opposite sides of the anti-loosening washers engaging.

[0010] Furthermore, to further improve the stability of the support base, multiple fixing holes are provided on the support base, and fixing screws are connected to the internal threads of the fixing holes.

[0011] Furthermore, in order to better improve the sealing performance of connector one and connector two, a connecting groove is provided on the opposite side of connector one and connector two, and a sealing gasket is installed inside the connecting groove.

[0012] Furthermore, in order to better improve the sealing performance of connector one and connector two, sealing rings are provided on connector one and connector two, and the sealing rings respectively contact the interior of connector one and connector two.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) By setting the connecting components in the working inner pipe, it is possible to effectively prevent loosening and displacement caused by external pressure, further enhance the tightness of the connection, ensure that the connection always maintains a stable state, effectively buffer the impact of soil settlement and thermal expansion and contraction, effectively prevent steam leakage, avoid leakage caused by pressure changes or loose connections, improve the safety and reliability of the pipeline system, prevent external moisture and impurities from entering the insulation layer, ensure the stable performance of the insulation material, and extend the service life of the pipeline. At the same time, the auxiliary components set in the connecting components can not only effectively adapt to complex terrain changes, but also keep the insulation pipe in a stable installation state, avoid pipeline stress concentration and connection damage caused by terrain factors, and enhance the sealing performance of the connection, thus improving the adaptability and stability of the pipeline.

[0015] (2) By setting anti-loosening gaskets on the auxiliary rod, the stability and adaptability of the connection can be further enhanced, enabling the insulation pipe to better adapt to the terrain undulations and unevenness, while maintaining the tightness and stability of the connection, effectively avoiding pipeline stress concentration and connection damage caused by terrain changes, reducing safety hazards, and ensuring the long-term stable operation of the pipeline in various complex environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a structural schematic diagram of a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the connection component structure of a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of the present utility model;

[0020] Figure 4 This is a side view of the connection component of a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the auxiliary component structure of a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Inner working tube; 2. Reinforcing plate; 3. Outer sheath; 4. Insulation layer; 5. Connecting components; 501. Connecting seat one; 502. Connecting seat two; 503. Limiting block; 504. Snap-fit ​​groove; 505. Snap-fit ​​block; 6. Auxiliary components; 601. Support seat; 602. Fixing seat; 603. Auxiliary groove; 604. Rotating rod; 605. Auxiliary rod; 7. Anti-loosening gasket; 8. Fixing screw; 9. Connecting groove; 10. Sealing gasket; 11. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-5As shown, a composite insulation layer steel-clad steel steam direct-buried insulation pipe according to an embodiment of this utility model includes a working inner pipe 1, which is the part that directly contacts high-temperature steam and is responsible for transporting steam. Depending on the usage conditions, different materials may be used, such as carbon steel or alloy steel, and corresponding anti-corrosion treatment is carried out to increase service life. Reinforcing plates 2 are provided at equal intervals on both ends of the working inner pipe 1. One end of the reinforcing plate 2 is connected to an outer sheath 3, which is used to protect the inner insulation layer 4 from groundwater erosion and external physical damage. The surface of the outer sheath 3 is provided with a protective coating (not shown in the figure). The protective coating is one of epoxy coal tar pitch, three-layer PE (polyethylene), FBE (fusion bonded epoxy powder), or other protective coatings, which are selected and used according to the actual situation. An insulation layer 4 is provided between the outer sheath 3 and the working inner pipe 1 to achieve efficient insulation. The insulation layer 4 is composed of a high-temperature insulation layer, a medium-low temperature insulation layer, and a reflective layer.

[0027] High-temperature insulation layers typically use aluminum silicate needled blankets, ceramic fiber blankets, or microporous calcium silicate tiles, primarily for resisting high temperatures.

[0028] Medium and low temperature insulation layers generally use polyurethane foam (PU), rock wool, glass wool, or rubber and plastic insulation materials to reduce heat loss.

[0029] The reflective layer is usually made by adding aluminum foil or stainless steel sheet to the insulation layer 4 to reduce heat radiation loss. The insulation layer 4 is in contact with one side of the reinforcing plate 2. In actual use, the insulation layer 4, the inner working pipe 1 and the outer sheath 3 are equipped with drainage pipes and moisture drain pipes (not shown in the figure) to remove condensate generated during operation and moisture entering the system during construction, so as to prevent the insulation layer 4 from getting damp and affecting the insulation effect.

[0030] The working inner tube 1 is provided with connecting components 5 at both ends. The connecting components 5 include connecting seats 1 501 at both ends of the working inner tube 1 for connecting seats 2 502. One side of the connecting seat 1 501 contacts the connecting seat 2 502. The interiors of the connecting seat 2 502 and the connecting seat 1 501 are in contact with each other. Two limiting blocks 503 are provided on the periphery of the connecting seat 2 502 and the connecting seat 1 501 for limiting the connection between the connecting seat 2 502 and the connecting seat 1 501. The opposite sides of the limiting blocks 503 are in contact. The interiors of the connecting seat 2 502 and the connecting seat 1 501 are provided with two snap-fit ​​grooves 504 for limiting snap-fit ​​blocks 505. The snap-fit ​​grooves 504 are provided with snap-fit ​​blocks 505 for limiting the connecting seat 2 502 and the connecting seat 1 501.

[0031] A connecting groove 9 is provided on the opposite side of the connecting seat 1 501 and the connecting seat 2 502. A sealing gasket 10 is installed inside the connecting groove 9 to improve the sealing performance of the connection. A sealing ring 11 is provided on the connecting seat 1 501 and the connecting seat 2 502 to improve the sealing performance of the connection. The sealing ring 11 is in contact with the interior of the connecting seat 1 501 and the connecting seat 2 502 respectively. In actual use, the sealing ring 11 and the sealing gasket 10 are coated with a corrosion-resistant coating, a high and low temperature resistant coating, a wear-resistant coating, and an anti-oxidation coating (not shown in the figure). The corrosion-resistant coating, the high and low temperature resistant coating, the wear-resistant coating, and the anti-oxidation coating are existing technologies and will not be described in detail.

[0032] Example 2:

[0033] like Figure 1 , Figure 5 As shown, according to an embodiment of the present invention, a composite insulation layer steel-clad steel steam direct-buried insulation pipe is provided with an auxiliary component 6 on the surface of the second connecting seat 502, the first connecting seat 501 and the outer sheath 3. The auxiliary component 6 includes a support seat 601 that contacts the outer sheath 3, the second connecting seat 502 and the first connecting seat 501, for supporting the outer sheath 3, the second connecting seat 502 and the first connecting seat 501. A fixing seat 602 is snapped onto the top of the support seat 601 for fixing the outer sheath 3, the second connecting seat 502 and the first connecting seat 501. An auxiliary groove 603 is provided on the fixing seat 602 and the support seat 601. A rotating rod 604 is connected inside the auxiliary groove 603 of the fixing seat 602. An auxiliary rod 605 is threadedly connected to the rotating rod 604.

[0034] Anti-loosening washers 7 are provided on the auxiliary rod 605 and the support base 601 to prevent the auxiliary rod 605 from loosening. The anti-loosening washers 7 are existing technology and will not be described in detail. Both anti-loosening washers 7 are connected to the auxiliary rod 605, and the opposite sides of the anti-loosening washers 7 are engaged. The support base 601 has four fixing holes, and fixing screws 8 are connected to the internal threads of the fixing holes to fix the support base 601.

[0035] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0036] In summary, with the help of the above-mentioned technical solution of this utility model, when the two pipe sections are connected during installation, the sealing rings 11 provided on the first connector 501 and the second connector 502 are in contact with each other's interiors, and the sealing gaskets 10 are embedded in the connecting grooves 9 provided on the first connector 501 and the second connector 502. The sealing gaskets 10 and the sealing rings 11 simultaneously press the inner cavities of the first connector 501 and the second connector 502 to form a double seal, preventing steam and groundwater from mixing. At the same time, the snap-fit ​​blocks 505 provided on the first connector 501 and the second connector 502 are inserted into each other's snap-fit ​​grooves 504 and rotated, so that the first connector 501 and the second connector 502 are axially locked, preventing them from being pulled out due to thermal expansion and contraction. The limiting blocks 503 provided on the rotating first connector 501 and the second connector 502 are snapped on opposite sides, preventing the first connector 501 and the second connector 502 from becoming loose.

[0037] Then, the support base 601 and the fixed base 602 are fastened to the outer sheath 3 and the connecting base 1 501 and the connecting base 2 502. Then, the rotating rod 604 rotates in the auxiliary groove 603 of the fixed base 602, so that the rotating rod 604 drives the threaded auxiliary rod 605 to rotate, so that the anti-loosening washer 7 of the auxiliary rod 605 engages with the anti-loosening washer 7 of the support base 601 to prevent loosening caused by running vibration. Then, the fixing screw 8 passes through the fixing hole of the support base 601 and is screwed into the concrete support / pipe pillow to form a stable support point.

[0038] During operation, the inner working pipe 1 directly delivers high-temperature steam, and the heat of the steam is absorbed by the inner working pipe 1 and diffused outward to the insulation layer 4.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite insulation layer steel-clad steel steam direct-buried insulated pipe, comprising a working inner pipe (1), with reinforcing plates (2) evenly distributed on both ends of the working inner pipe (1), an outer sheath (3) connected to one end of the reinforcing plate (2), an insulation layer (4) disposed between the outer sheath (3) and the working inner pipe (1), the insulation layer (4) contacting one side of the reinforcing plate (2), characterized in that, The working inner tube (1) is provided with connecting components (5) at both ends. The connecting components (5) include connecting seat 1 (501) at both ends of the working inner tube (1), connecting seat 2 (502) on one side of connecting seat 1 (501), connecting seat 2 (502) and connecting seat 1 (501) are in contact with each other inside, and multiple limiting blocks (503) are provided on the periphery of connecting seat 2 (502) and connecting seat 1 (501), and the opposite sides of the limiting blocks (503) are in contact. Multiple snap-fit ​​grooves (504) are opened inside connecting seat 2 (502) and connecting seat 1 (501), and snap-fit ​​blocks (505) are provided inside snap-fit ​​grooves (504). Auxiliary components (6) are provided on the surface of connecting seat 2 (502), connecting seat 1 (501) and outer sheath (3).

2. The composite insulation layer steel-clad steel steam direct-buried insulation pipe according to claim 1, characterized in that, The auxiliary component (6) includes an outer sheath (3) and a connecting seat two (502). A support seat (601) is in contact with the connecting seat one (501). A fixed seat (602) is snapped onto the top of the support seat (601). An auxiliary groove (603) is opened on the fixed seat (602) and the support seat (601). A rotating rod (604) is connected inside the auxiliary groove (603) of the fixed seat (602). An auxiliary rod (605) is threaded onto the rotating rod (604).

3. The composite insulation layer steel-clad steel steam direct-buried insulation pipe according to claim 2, characterized in that, The auxiliary rod (605) and the support base (601) are provided with anti-loosening washers (7), and the opposite sides of the anti-loosening washers (7) are engaged.

4. The composite insulation layer steel-clad steel steam direct-buried insulation pipe according to claim 3, characterized in that, The support base (601) has multiple fixing holes, and the fixing holes are threaded with fixing screws (8).

5. A composite insulation layer steel-clad steel steam direct-buried insulation pipe according to claim 4, characterized in that, A connecting groove (9) is provided on the opposite side of the connecting seat 1 (501) and the connecting seat 2 (502), and a sealing gasket (10) is installed inside the connecting groove (9).

6. A composite insulation layer steel-clad steel steam direct-buried insulation pipe according to claim 5, characterized in that, A sealing ring (11) is provided on the first connecting seat (501) and the second connecting seat (502), and the sealing ring (11) contacts the inside of the first connecting seat (501) and the second connecting seat (502) respectively.

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