An internal thermal insulation type guide pipe support and its construction method

Abstract

The present invention provides an internal thermal insulation type guide pipe support, belonging to the technical field of pipe brackets. The pipe support includes an inner support, an outer support and a chute; an aluminosilicate needled blanket is arranged inside the inner support, the aluminosilicate needled blanket wraps the outer wall of the working steel pipe, a rigid heat insulation layer is wrapped outside the aluminosilicate needled blanket, and the outer wall of the rigid heat insulation layer contacts the inner support; the lower part of the inner support is connected with the outer support; a chute is arranged below the outer support; an outer protection pipe is arranged along the outside of the inner support. The aluminosilicate needled blanket is used for heat preservation and heat insulation of the working steel pipe; the rigid heat insulation layer is used for heat insulation between the working steel pipe and the inner support, avoiding the loss of heat inside the working steel pipe through the inner support. This method will not reduce the heat preservation and anti-corrosion performance of the steam heat preservation pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline brackets, and particularly relates to an internal heat-insulating type guiding pipe support and a construction method thereof. Background Art

[0002] Steam heat-insulating pipes are generally used for the transmission of high-temperature steam, and thus are widely used in the field of municipal heating. Steam heat-insulating pipes are mainly divided into directly buried steam heat-insulating pipes and overhead steam heat-insulating pipes. A steam heat-insulating pipe is composed of an internal medium pipeline (working steel pipe), an intermediate heat-insulating layer, and an outer protection pipe. Because of its advantages such as low project cost, less heat loss, good anti-corrosion and insulation performance, and convenient construction, it is widely used in fields such as chemical pipelines, central heating, central air-conditioning ventilation pipelines, and municipal engineering.

[0003] However, during the laying process of the existing steam heat-insulating pipes, in order to reliably fix the working steel pipe, it is necessary to open the bottom of the outer protection pipe 12 and the heat-insulating layer 13 at the construction site to facilitate the installation of the fixing bracket, which causes damage to the outer protection pipe 12 and the heat-insulating layer 13, reduces the heat-insulating and anti-corrosion performance of the steam heat-insulating pipeline, and shortens the working life of the pipeline. Summary of the Invention

[0004] Aiming at the problems existing in the above-mentioned prior art, the invention provides an internal heat-insulating type guiding pipe support and a construction method thereof. The technical problem to be solved by the invention is to provide an internal heat-insulating type guiding pipe support and a construction method thereof that do not reduce the heat-insulating and anti-corrosion performance of the steam heat-insulating pipeline.

[0005] To solve the above technical problem, the invention provides an internal heat-insulating type guiding pipe support, including an inner support, an outer support, and a chute;

[0006] A silica-aluminum needle felt or a nano-aerogel felt is arranged inside the inner support. The silica-aluminum needle felt wraps the outer wall of the working steel pipe, and a rigid heat-insulating layer is wrapped outside the silica-aluminum needle felt. The outer wall of the rigid heat-insulating layer contacts the inner support; an outer support is connected below the inner support; a chute is arranged below the outer support; an outer protection pipe is arranged along the outside of the inner support, and the outer protection pipe is connected to both ends of the outer support; a heat-insulating layer is arranged between the outer protection pipe and the outer wall of the inner support.

[0007] Furthermore, a metal plate is arranged between the silica-aluminum needle felt and the inner support; a rigid heat-insulating layer is arranged between the metal plates.

[0008] Furthermore, the metal plate is an arc-shaped plate, and the metal plates are arranged above and below the working steel pipe.

[0009] Furthermore, the inner support includes a lower inner support and an upper inner support, both of which are semi-circular arc-shaped steel plates.

[0010] Furthermore, both ends of the lower inner support and the upper inner support are connected by bolts.

[0011] Furthermore, the outer support includes an inner arc plate, an outer arc plate, and a bracket. The outer diameter of the inner arc plate is equal to the inner diameter of the outer arc plate. The outer wall of the inner arc plate is connected to the inner wall of the outer arc plate. The bracket is connected below the outer arc plate.

[0012] Furthermore, the inner arc plate is connected to the lower inner support through rib plates and arc plates.

[0013] Furthermore, the chute includes a chute bottom plate and guiding baffles located on both sides of the chute bottom plate. The lower surface of the bracket contacts the chute bottom plate.

[0014] Furthermore, for the thickness of the rigid heat insulation layer: when the diameter of the working steel pipe ≤ 200, the thickness of the rigid heat insulation layer ≥ 40 mm; when the diameter of the working steel pipe > 200, the thickness of the rigid heat insulation layer ≥ 50 mm; the thickness of the aluminum silicate needled blanket is 8 - 10 mm.

[0015] The present invention provides a construction method for an inner heat-insulated guiding pipe support. Using the above-mentioned inner heat-insulated guiding pipe support, it includes the following steps:

[0016] Step S1: The inner support includes a lower inner support and an upper inner support. Connect the metal plate to the inner walls of the lower inner support and the upper inner support. Then connect the rigid heat insulation layer above and below the metal plate inside the lower inner support. Connect the outer wall of the lower inner support to the outer support to complete the production of the prefabricated part.

[0017] Step S2: Wrap the aluminum silicate needled blanket around the outer wall of the working steel pipe.

[0018] Step S3: Arrange the prefabricated lower inner support and upper inner support outside the working steel pipe, and use bolts to connect the lower inner support and the upper inner support into one body.

[0019] Step S4: Connect the chute to the foundation at the construction site.

[0020] Step S5: Finally, install the prefabricated part in Step S1 inside the chute 8.

[0021] The present invention provides an inner heat-insulated guiding pipe support. The metal plate is an arc plate. The metal plate only contacts the upper and lower vertices of the working steel pipe. While ensuring the supporting effect on the rigid heat insulation layer, the metal plate will not cause heat loss of the working steel pipe. The aluminum silicate needled blanket is used for heat preservation and insulation of the working steel pipe. The rigid heat insulation layer is used for heat insulation between the working steel pipe and the inner support, preventing the heat inside the working steel pipe from dissipating through the inner support. The present invention provides an inner heat-insulated guiding pipe support and its construction method that will not reduce the heat preservation and anti-corrosion performance of the steam heat-insulated pipeline. Description of the Drawings

[0022] Figure 1It is a schematic structural view of an internal thermal insulation type guiding pipe support of the present invention.

[0023] Figure 2 It is a side view of an internal thermal insulation type guiding pipe support of the present invention.

[0024] Among them, 100, internal support; 200, external support; 1, lower internal support; 2, upper internal support; 3, rigid heat insulation layer; 4, aluminum silicate needled blanket; 5, inner arc plate; 6, outer arc plate; 7, bracket; 8, chute; 9, guiding baffle; 10, chute bottom plate; 11, bolt; 12, outer protection pipe; 13, thermal insulation layer; 14, metal plate. Specific embodiments

[0025] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] To better understand the purpose, structure and function of the present invention, the following further describes in detail an internal thermal insulation type guiding pipe support of the present invention and its construction method with reference to the accompanying drawings.

[0030] Example 1:

[0031] AsFigure 1 and Figure 2 As shown in Figure 2 , an internal heat-insulating guide pipe support of the present invention includes an internal support 100, an external support 200, and a chute 8;

[0032] An aluminum silicate needle punched blanket 4 is arranged inside the internal support 100. The aluminum silicate needle punched blanket 4 wraps the outer wall of the working steel pipe. A rigid heat-insulating layer 3 is wrapped outside the aluminum silicate needle punched blanket 4. The outer wall of the rigid heat-insulating layer 3 contacts the internal support 100; the lower part of the internal support 100 is connected to the external support 200; a chute 8 is arranged below the external support 200.

[0033] The aluminum silicate needle punched blanket 4 is used for heat preservation and heat insulation of the working steel pipe; the rigid heat-insulating layer 3 is used for heat insulation between the working steel pipe and the internal support 100, avoiding the loss of heat inside the working steel pipe through the internal support 100.

[0034] A heat-insulating layer 13 is arranged between the outer protection pipe 12 and the outer wall of the internal support 100, which can further reduce the loss of heat of the working steel pipe.

[0035] Embodiment 2:

[0036] As Figure 1 and Figure 2 shown in Figure 2 , an internal heat-insulating guide pipe support of the present invention includes an internal support 100, an external support 200, a chute 8, a heat-insulating layer 13, and an outer protection pipe 12;

[0037] An aluminum silicate needle punched blanket 4 is arranged inside the internal support 100. The aluminum silicate needle punched blanket 4 wraps the outer wall of the working steel pipe. A rigid heat-insulating layer 3 is wrapped outside the aluminum silicate needle punched blanket 4. The outer wall of the rigid heat-insulating layer 3 contacts the internal support 100; the lower part of the internal support 100 is connected to the external support 200; a chute 8 is arranged below the external support 200.

[0038] The aluminum silicate needle punched blanket 4 is used for heat preservation and heat insulation of the working steel pipe; the rigid heat-insulating layer 3 is used for heat insulation between the working steel pipe and the internal support 100, avoiding the loss of heat inside the working steel pipe through the internal support 100.

[0039] A heat-insulating layer 13 is arranged between the outer protection pipe 12 and the outer wall of the internal support 100, which can further reduce the loss of heat of the working steel pipe.

[0040] The difference between this embodiment and the first embodiment is that:

[0041] The internal support 100 includes a lower internal support 1 and an upper internal support 2, both of which are semi-circular arc-shaped steel plates, and the two ends are connected by bolts 11.

[0042] The outer support 200 includes an inner arc-shaped plate 5, an outer arc-shaped plate 6, and a bracket 7. The outer diameter of the inner arc-shaped plate 5 is equal to the inner diameter of the outer arc-shaped plate 6. The inner arc-shaped plate 5 and the outer arc-shaped plate 6 are connected by bolts 11. The inner arc-shaped plate 5 and the lower inner support 1 are connected by rib plates and arc plates. The bracket 7 is connected below the outer arc-shaped plate 6, and the material of the bracket 7 is stainless steel.

[0043] The chute 8 includes a chute bottom plate 10 and guiding baffles 9 located on both sides of the chute bottom plate 10. The lower surface of the bracket 7 contacts the chute bottom plate 10, and the friction coefficient between them is ≤0.1 mm. The material of the chute bottom plate 10 is a tetrafluoroethylene plate. The gap between the guiding baffle 9 and the bracket 7 is 10 - 15 mm.

[0044] The thickness of the rigid heat-insulating layer 3: when the diameter of the working steel pipe ≤ 200, the thickness of the rigid heat-insulating layer 3 ≥ 40 mm; when the diameter of the working steel pipe > 200, the thickness of the rigid heat-insulating layer 3 ≥ 50 mm.

[0045] The pressure resistance of the inner heat-insulating type guiding pipe support ≥ 15 Mpa, and the flexural strength ≥ 4.5 Mpa.

[0046] The thickness of the aluminosilicate needled felt 4 is 8 - 10 mm;

[0047] When the steam temperature in the working steel pipe is 300 °C, the thermal conductivity of the inner heat-insulating type guiding pipe support is ≤ 0.13 W / m·k.

[0048] Embodiment 3:

[0049] As Figure 1 and Figure 2 shown, an inner heat-insulating type guiding pipe support of the present invention includes an inner support 100, an outer support 200, a chute 8, a heat-insulating layer 13, and an outer protection pipe 12;

[0050] An aluminosilicate needled felt 4 is arranged inside the inner support 100, and the aluminosilicate needled felt 4 wraps the outer wall of the working steel pipe. Above and below the working steel pipe, a metal plate 14 is arranged between the aluminosilicate needled felt 4 and the inner support 100. Inside the inner support 100, a rigid heat-insulating layer 3 is arranged between the metal plates 14. The outer wall and the inner wall of the rigid heat-insulating layer 3 are in contact with the inner support 100 and the aluminosilicate needled felt 4 respectively. The metal plate 14 is used for supporting the rigid heat-insulating layer 3. The lower part of the inner support 100 is connected with an outer support 200. A chute 8 is arranged below the outer support 200.

[0051] The metal plate 14 is an arc-shaped plate. The metal plate 14 is arranged above and below the working steel pipe. While ensuring the supporting effect on the rigid heat-insulating layer 3, the metal plate will not cause heat loss of the working steel pipe.

[0052] The aluminosilicate needled blanket 4 is used for insulating and heat-insulating the working steel pipe; the rigid heat-insulating layer 3 is used for heat-insulating the working steel pipe and the inner support 100, preventing the heat inside the working steel pipe from dissipating through the inner support 100.

[0053] A heat-insulating layer 13 is arranged on the outer wall support of the outer protection pipe 12 and the inner support 100, which can further reduce the heat dissipation of the working steel pipe.

[0054] Embodiment 4:

[0055] As Figure 1 shown, an inner heat-insulating type guiding pipe support of the present invention includes an inner support 100, an outer support 200, a sliding groove 8, a heat-insulating layer 13 and an outer protection pipe 12;

[0056] The inner support 100 is internally provided with an aluminosilicate needled blanket 4, and the aluminosilicate needled blanket 4 wraps the outer wall of the working steel pipe; above and below the working steel pipe, a metal plate 14 is arranged between the aluminosilicate needled blanket 4 and the inner support 100; inside the inner support 100, a rigid heat-insulating layer 3 is arranged between the metal plates 14, and the outer wall and the inner wall of the rigid heat-insulating layer 3 are respectively in contact with the inner support 100 and the aluminosilicate needled blanket 4, and the metal plate 14 is used for supporting the rigid heat-insulating layer 3; the lower part of the inner support 100 is connected with an outer support 200; a sliding groove 8 is arranged below the outer support 200.

[0057] The metal plate 14 is an arc-shaped plate, and the metal plate only contacts the upper and lower vertices of the working steel pipe. Under the condition of ensuring the supporting effect on the rigid heat-insulating layer 3, the metal plate will not cause heat loss of the working steel pipe.

[0058] The aluminosilicate needled blanket 4 is used for insulating and heat-insulating the working steel pipe; the rigid heat-insulating layer 3 is used for heat-insulating the working steel pipe and the inner support 100, preventing the heat inside the working steel pipe from dissipating through the inner support 100.

[0059] A heat-insulating layer 13 is arranged on the outer wall support of the outer protection pipe 12 and the inner support 100, which can further reduce the heat dissipation of the working steel pipe.

[0060] The difference between this embodiment and the third embodiment is that:

[0061] The inner support 100 includes a lower inner support 1 and an upper inner support 2, both of which are semi-circular arc-shaped steel plates, and the two ends are connected by bolts 11.

[0062] The outer support 200 includes an inner arc-shaped plate 5, an outer arc-shaped plate 6 and a bracket 7. The outer diameter of the inner arc-shaped plate 5 is equal to the inner diameter of the outer arc-shaped plate 6, and the inner arc-shaped plate 5 and the outer arc-shaped plate 6 are connected by bolts 11. The inner arc-shaped plate 5 and the lower inner support 1 are connected by rib plates and arc plates; the bracket 7 is connected below the outer arc-shaped plate 6, and the material of the bracket 7 is stainless steel.

[0063] The chute 8 includes a chute bottom plate 10 and guiding baffles 9 located on both sides of the chute bottom plate 10. The lower surface of the bracket 7 contacts the chute bottom plate 10, and the friction coefficient between them is ≤ 0.1 mm; the material of the chute bottom plate 10 is a polytetrafluoroethylene plate; the gap between the guiding baffle 9 and the bracket 7 is 10 - 15 mm.

[0064] The thickness of the rigid heat insulation layer 3: when the diameter of the working steel pipe is ≤ 200, the thickness of the rigid heat insulation layer 3 ≥ 40 mm; when the diameter of the working steel pipe > 200, the thickness of the rigid heat insulation layer 3 ≥ 50 mm.

[0065] The pressure resistance strength of the internal heat insulation type guiding pipe support ≥ 15 Mpa: the flexural strength ≥ 4.5 Mpa.

[0066] The thickness of the needled aluminosilicate blanket 4 is 8 - 10 mm;

[0067] When the steam temperature in the working steel pipe is 300 °C, the thermal conductivity of the internal heat insulation type guiding pipe support is ≤ 0.13 W / m·k.

[0068] Example 5:

[0069] A construction method of an internal heat insulation type guiding pipe support of the present invention uses the above-mentioned internal heat insulation type guiding pipe support and includes the following steps:

[0070] Step S1: The internal support 100 includes a lower internal support 1 and an upper internal support 2. Connect the metal plate 14 to the inner walls of the lower internal support 1 and the upper internal support 2, and then connect the rigid heat insulation layer 3 above the metal plate 14 inside the lower internal support 1 and below the metal plate 14 inside the lower internal support 2. Connect the outer wall of the lower internal support 2 to the outer support 200 to complete the production of the prefabricated part;

[0071] Step S2: Wrap the needled aluminosilicate blanket 4 around the outer wall of the working steel pipe;

[0072] Step S3: Set the prefabricated lower internal support 1 and upper internal support 2 outside the working steel pipe, and connect the lower internal support 1 and the upper internal support 2 into one body by using bolts 11;

[0073] Step S4: Connect the chute 8 to the foundation at the construction site;

[0074] Step S5: Finally, install the prefabricated part in step S1 inside the chute 8.

[0075] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An internal thermal insulation type guiding pipe support, characterized in that, It includes an inner support, an outer support, a chute, a thermal insulation layer and an outer protective pipe; An aluminum silicate needle punched blanket is arranged inside the inner support. The aluminum silicate needle punched blanket wraps the outer wall of the working steel pipe. A rigid heat insulation layer is wrapped outside the aluminum silicate needle punched blanket. The outer wall of the rigid heat insulation layer contacts the inner support; the outer support is connected below the inner support; a chute is arranged below the outer support; an outer protective pipe is arranged along the outside of the inner support, and both ends of the outer protective pipe are connected to the outer support; a thermal insulation layer is arranged between the outer wall of the outer protective pipe and the inner support; A metal plate is arranged between the aluminum silicate needle punched blanket and the inner support; a rigid heat insulation layer is arranged between the metal plates; the metal plate is an arc-shaped plate, and the metal plate only contacts the upper and lower vertices of the working steel pipe. The metal plates are arranged above and below the working steel pipe.

2. The internal thermal insulation type guide pipe support according to claim 1, characterized in that, The inner support includes a lower inner support and an upper inner support, both of which are semi-circular arc-shaped steel plates.

3. The internal insulation type guide pipe support according to claim 2, characterized in that, Both ends of the lower inner support and the upper inner support are connected by bolts.

4. The internal insulation type guide pipe support according to claim 1, characterized in that, The outer support includes an inner arc-shaped plate, an outer arc-shaped plate and a bracket. The outer diameter of the inner arc-shaped plate is equal to the inner diameter of the outer arc-shaped plate. The outer wall of the inner arc-shaped plate is connected to the inner wall of the outer arc-shaped plate. The bracket is connected below the outer arc-shaped plate.

5. The internal heat-insulated guide pipe support according to claim 4, wherein The inner arc-shaped plate is connected to the lower inner support through a rib plate and an arc plate.

6. The internal insulation type guide pipe support according to claim 5, characterized in that, The chute includes a chute bottom plate and guiding baffles located on both sides of the chute bottom plate. The lower surface of the bracket contacts the chute bottom plate.

7. The internal thermal insulation type guiding pipe support according to claim 6, characterized in that Thickness of the rigid heat insulation layer: when the diameter of the working steel pipe ≤ 200, the thickness of the rigid heat insulation layer ≥ 40mm; when the diameter of the working steel pipe > 200, the thickness of the rigid heat insulation layer ≥ 50mm; the thickness of the aluminum silicate needle punched blanket is 8 - 10mm.

8. A construction method of an internal thermal insulation type guiding pipe support, characterized in that, Using the inner heat-insulated guiding pipe support as described in claim 2, it includes the following steps: Step S1: The inner support includes a lower inner support and an upper inner support. Connect the metal plates to the inner walls of the lower inner support and the upper inner support, and then connect the rigid heat insulation layer above the metal plate inside the lower inner support and below the metal plate inside the upper inner support. Connect the outer wall of the lower inner support to the outer support to complete the production of the prefabricated part; Step S2: Wrap the aluminum silicate needle punched blanket on the outer wall of the working steel pipe; Step S3: Arrange the prefabricated lower inner support and upper inner support outside the working steel pipe, and use bolts to connect the lower inner support and the upper inner support into one body; Step S4: Connect the chute to the foundation at the construction site; Step S5: Finally, install the prefabricated part in step S1 inside the chute.

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