Fireproof cold insulation pipeline support

Abstract

The invention provides a fireproof cold insulation pipeline support which is used for fixing a pipeline, the cold insulation pipeline support comprises a saddle and a fixing mechanism arranged on the saddle, the saddle is used for rotatably arranging the fixing mechanism on a base, and the fixing mechanism comprises a pipe clamp, a protective layer, a damp-proof layer and a cold insulation layer which are arranged in the radial direction of the pipeline from outside to inside; the cold insulation layer is formed by wrapping the pipeline with at least one layer of tubular foam glass blocks, a first axial limiting plate is arranged at the end of the pipe clamp, and the first axial limiting plate radiates inwards in the radial direction perpendicular to the axial direction of the pipeline from the end of the pipe clamp so as to abut against the outer edge area of the end face of the cold insulation layer. According to the cold insulation pipeline support, the stability of the cold insulation layer in the axial direction of the pipeline is guaranteed, the fire resistance of the cold insulation pipeline support is improved, and the problem of slotting embedding embrittlement caused by the brittleness characteristic of foam glass is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline transportation systems, and in particular to a fireproof cold-insulating pipeline support. Background Art

[0002] Cold-insulation pipe supports are used to insulate pipes that transport low-temperature media while securing them. Many industries involve pipe insulation needs. For example, liquefied natural gas (LNG) transportation systems have extremely high requirements for pipe insulation, fixing stability, and position adjustment flexibility. Generally, pipe clamp-type cold-insulation pipe supports are used to secure the pipes. Cold-insulation material is placed inside the pipe clamp, and the pipe clamp presses the cold-insulation material against the outer wall of the pipe when clamping the pipe, thereby blocking temperature conduction between the pipe and the clamp. Existing technologies use laminated cold-insulation materials composed of alternating multiple thin layers of non-de-powdered aerogel felt and deep-cold aerogel felt layers, or encapsulated cold-insulation materials cut from a few thick layers of polyurethane foam in the shape of a tube. However, axial relative displacement is easily generated between the thin layers of the laminated cold-insulation material, and the polyurethane foam of the encapsulated cold-insulation material has insufficient fire resistance and poor stability at low temperatures. Summary of the Invention

[0003] In order to solve at least one of the above problems, the present invention provides a fireproof cold-insulating pipe support.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] An embodiment of the present invention provides a fireproof cold-insulation pipe support for fixing a pipe. The cold-insulation pipe support includes a saddle and a fixing mechanism arranged on the saddle. The saddle is used to transfer the fixing mechanism and set it on the base. The fixing mechanism includes a pipe clamp, a protective layer, a moisture-proof layer and a cold-insulation layer arranged from the outside to the inside along the radial direction of the pipe. The cold-insulation layer is formed by covering the outside of the pipe with at least one layer of tubular foam glass. A first axial limit plate is provided at the end of the pipe clamp. The first axial limit plate radiates radially inward from the end of the pipe clamp in a direction perpendicular to the axial direction of the pipe so as to resist the outer edge area of ​​the end face of the cold-insulation layer.

[0006] In some embodiments, a buffer strip is provided at the circumferential joint of each layer of foam glass blocks in the circular tube shape in the cold insulation layer, and the buffer strip extends axially along the tube.

[0007] In some embodiments, a first buffer layer is further included, and the first buffer layer is disposed between the inner wall of the pipe clamp and the outer surface of the protective layer.

[0008] In some embodiments, a second buffer layer is further included, and the second buffer layer is arranged between the inner surface of the cold insulation layer and the outer wall of the pipeline.

[0009] In some embodiments, the pipe is provided with a second axial limiting plate outside the pipe clamp, the second axial limiting plate radiates radially outward from the outer wall of the pipe in a direction perpendicular to the axial direction of the pipe to block the inner edge area of the end face of the cold insulation layer.

[0010] In some embodiments, the pipe is provided with a radially outward radiating rib plate away from the cold insulation layer direction of the second axial limiting plate, the rib plate is connected between the second axial limiting plate and the pipe.

[0011] In some embodiments, a second buffer layer is arranged between the axial limiting plate and the end face of the cold insulation layer.

[0012] In some embodiments, the cold insulation layer is provided as a single layer, two layers or multiple layers wrapped outside the pipe; and / or, each layer of foam glass block is formed by two half-circular tubulars butted at the joint in the circumferential direction to form a circular tubular foam glass block.

[0013] In some embodiments, the base is provided with a first stop block on both sides of the saddle to limit the saddle in the radial direction of the pipe; and / or, the saddle is provided with a second stop block on both sides of the base to limit the saddle in the axial direction of the pipe.

[0014] In some embodiments, the protective layer is made of metal material; and / or, the buffer strip is made of elastic glass fiber; and / or, the moisture-proof layer is PAP aluminum foil; and / or, the first buffer layer is aerogel felt; and / or, the second buffer layer is made of ceramic cotton.

[0015] According to the embodiments of the present application, the circular tubular foam glass block is wrapped outside the pipe to form the cold insulation layer, since the foam glass block has sufficient thickness, the cold insulation layer wrapped outside the pipe has strong integrity in the radial direction of the pipe, which ensures the stability of the cold insulation layer in the axial direction of the pipe; since the foam glass has higher fire resistance and low temperature stability, the fire resistance of the cold pipe support is improved, so that the cold pipe support has sufficient stability in low temperature and high temperature states; the first axial limiting plate is arranged at the end of the pipe clamp, the end face of the cold insulation layer is blocked and limited by the first axial limiting plate, so that the limiting structure does not need to be embedded in the cold insulation layer, and the problem of brittle cracking caused by the slot embedding due to the brittle characteristics of the foam glass is avoided.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings herein are incorporated into the specification and form part of the specification, which show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application.

[0018] Figure 1 is a sectional view of the fixing mechanism in an embodiment of the present application;

[0019] Figure 2 is Figure 1 is a partial enlarged view of A in FIG. 1;

[0020] Figure 3 is a side view of a fixing mechanism in an embodiment of the present application;

[0021] Figure 4 is Figure 3 is a partial sectional enlarged view of B in FIG. 1;

[0022] Figure 5 is a side view of a fixing mechanism in another embodiment of the present application.

[0023] Reference signs:

[0024] 1: connecting piece; 2: first pipe clamp; 3: first axial limiting plate; 4: second axial limiting plate; 5: rib plate; 6: buffer strip; 7: cold insulation layer; 8: second pipe clamp; 9: saddle; 10: first stop block; 11: second stop block; 12: first buffer layer; 13: protective layer; 14: moisture-proof layer; 15: second buffer layer. DETAILED DESCRIPTION

[0025] The present application will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed merely to enable those of ordinary skill in the art to better understand and thus practice the present application, and are not intended to impose any limitations on the scope of the present application.

[0026] As used herein, the term "includes" and its variants are to be read to be synonymous with "including but not limited to"; the term "embodiment" and "one embodiment" are to be read to mean "at least one embodiment"; the term "another embodiment" is to be read to mean "at least one other embodiment"; the terms "first", "second", etc. can refer to different or identical objects; the term "set" is not limited to direct or indirect connection, nor to a specific connection manner. Other explicit and implicit definitions can also be included below.

[0027] Some specific numerical values or numerical ranges can be involved in the following description. It should be understood that these numerical values and numerical ranges are merely exemplary, which can be beneficial to put the idea of the present application into practice. However, the description of these examples is not intended to limit the scope of the present application in any way. According to specific application scenarios and requirements, these numerical values or numerical ranges can be set otherwise.

[0028] For the convenience of describing the technical concept of the embodiments of the present application, "axial", "radial", "circumferential" appearing below respectively refer to "axial", "radial", "circumferential" of the pipe itself.

[0029] As mentioned above, the thin layers of the stacked cold insulation material of the existing cold insulation pipe support are prone to axial relative displacement, and the polyurethane foam of the wrapped cold insulation material has insufficient fire resistance and poor stability at low temperatures. The fireproof cold insulation pipe support proposed in the embodiment of the present invention at least partially solves the above problems. Figure 1-Figure 5 The structure and working principle of a cold-insulation pipe support according to an exemplary embodiment of the present invention will be described. The cold-insulation pipe support according to the embodiment of the present invention mainly includes a saddle 9 and a fixing mechanism. The fixing mechanism is used to fix the pipe. The saddle 9 is disposed on the base, and the fixing mechanism is supported by the saddle 9. In other words, the saddle 9 is used to support the fixing mechanism and the pipe on the base.

[0030] like Figure 3 and Figure 5 As shown, taking the I-beam as the base as an example, the saddle 9 is arranged on the top of the wing plate of the I-beam. Figure 5 As shown, the saddle 9 is fixedly connected to the I-beam by screwing, riveting or welding. The saddle 9 can also be supported only on the top of the wing plate of the I-beam, so that the I-beam and the saddle 9 only bear the vertical load of the pipeline. The saddle 9, the fixing mechanism and the pipeline can move freely axially relative to the I-beam as a whole.

[0031] like Figure 1 and Figure 3 As shown, a pair of fixed first stops 10 are provided at the top of the I-beam. The saddle 9 is placed between the pair of first stops 10 at the top of the I-beam flange. The first stops 10 are used to radially limit the saddle 9, thereby providing guidance for the axial movement of the saddle 9. A pair of fixed second stops 11 are provided at the bottom of the saddle 9. When the saddle 9 is placed at the top of the I-beam flange, the flange is located between the pair of second stops 11. The pair of second stops 11 are used to axially limit the I-beam, thereby providing guidance for the radial movement of the saddle 9.

[0032] like Figure 1 and Figure 2 As shown, the fixing mechanism includes a pipe clamp, a first buffer layer 12, a protective layer 13, a moisture-proof layer 14, a cold-insulating layer 7, and a second buffer layer 15. The pipe clamp applies a clamping force radially inward, thereby indirectly clamping the outer wall of the pipe through each layer. To facilitate the application and release of the clamping force, the pipe clamp can be exemplarily composed of a first pipe clamp 2 and a second pipe clamp 8 fastened to each other via two sets of connectors 1, or a "C"-shaped pipe clamp can be used to fasten the opening via a single set of connectors 1.

[0033] The cold insulation layer 7 is used to block the temperature transfer path between the pipe's outer wall and the pipe clamp. In this embodiment of the present invention, the cold insulation layer 7 is formed by wrapping a tubular foam glass block around the pipe. Foam glass has excellent fire resistance and cold-insulating properties, meeting Class A fire protection standards. Its thermal conductivity is as low as 0.043 to 0.056 W / (m·K), and it exhibits excellent low-temperature stability. The foam glass block covering the outer surface of the second buffer layer 15 is sufficiently thick and maintains good radial integrity. This prevents axial movement within the cold insulation layer 7 during use, thus ensuring excellent cold-insulating performance.

[0034] In one embodiment, the cold insulation layer 7 can be composed of only one layer of foam glass blocks, so that its radial integrity is optimal. Figure 2 As shown, the cold insulation layer 7 is composed of two layers of foam glass blocks, the inner and outer layers. This arrangement can ensure the consistency of the stratification of the bracket cold insulation structure and the stratification of the pipeline cold insulation layer 7, and avoid the temperature from being transferred through the joint position of the pipeline cold insulation material and the bracket cold insulation material. Figure 4 As shown, the cold insulation layer 7 of the pipe can form a stepped end due to the inner and outer layers of the foam glass block structure. Correspondingly, the bracket cold insulation structure composed of the first axial limit plate 3 and the second axial limit plate 4 is also stepped, thereby avoiding the reduction of the cold insulation effect due to a simple radially extending joint.

[0035] During cooling or heating, the shrinkage or expansion of the cold insulation layer is inconsistent with that of the pipe, resulting in a gap between the two and preventing a complete fit. Therefore, during production, a gap is reserved between the circumferential joints of each layer of foam glass blocks in the cold insulation layer. The reserved gap is filled with a buffer strip 6 to compensate for the gap and prevent temperature transfer through the joint. Exemplarily, the buffer strip 6 is made of elastic glass fiber to achieve good rebound properties. In other examples, the buffer strip 6 can also be made of polyurethane, elastic silicone, or elastic sponge.

[0036] In one embodiment, when two layers of tubular foam glass blocks are used to over-mold the cold insulation layer 7, as shown in FIG. Figure 2 As shown, the positions of the butt joints of the inner layer and the outer layer are staggered in the circumferential direction, thereby further avoiding temperature conduction through the butt joints.

[0037] Because foam glass is brittle and fragile, it's not possible to groove the foam glass insulation layer 7 and insert a stopper to provide axial restraint, as is conventionally done. In one embodiment, a first axial stopper plate 3 is provided at the end of the pipe clamp. This plate 3 radiates radially inward from the end of the pipe clamp, perpendicular to the pipe axis, to contact the outer edge of the end surface of the insulation layer 7. Specifically, the first axial stopper plate 3 is arc-shaped. For example, the first axial stopper plate 3 can be segmented or semicircular.

[0038] In one embodiment, a second axial limit plate 4 is provided on the outside of the pipe clamp, and the second axial limit plate 4 radiates radially outward from the outer wall of the pipe in a direction perpendicular to the axial direction of the pipe so as to block the inner edge area of ​​the end face of the cold insulation layer 7, that is, the second axial limit plate 4 is arc-shaped.

[0039] In one embodiment, the pipeline is provided with radially outward radiating ribs 5 in the direction away from the cold insulation layer 7 on the second axial limit plate 4, and the ribs 5 are connected between the second axial limit plate 4 and the pipeline, thereby providing sufficient strength for the second axial limit plate 4.

[0040] Moisture-proof layer 14 adheres closely to the outer surface of cold insulation layer 7 to prevent moisture from the ambient air from penetrating into cold insulation layer 7, thereby affecting its insulation performance. Exemplarily, moisture-proof layer 14 is PAP aluminum foil, which has a high melting point and improves the high-temperature fire resistance of the cold insulation pipe support. In other examples, moisture-proof layer 14 can also be made of asphalt felt, polyethylene polypropylene composite waterproof membrane, SBS modified asphalt waterproof membrane, polyurethane waterproof coating, acrylic waterproof coating, epoxy coal tar coating, glass wool felt, or foam plastic.

[0041] A protective layer 13 is provided on the outer surface of the moisture-proof layer 14 to prevent the moisture-proof layer 14 and the cold-insulating layer 7 from being damaged during transportation, installation, and use. For example, the protective layer 13 is made of a metal material, such as an aluminum plate, a stainless steel plate, an aluminum-plated steel plate, or a galvanized steel plate, thereby providing sufficient protective strength.

[0042] A first buffer layer 12 and a second buffer layer 15 are respectively provided on the outer surface of the protective layer 13 and the inner surface of the cold-insulating layer 7. The flexible first and second buffer layers 12, 15 can further reduce the risk of foam glass breakage and increase the contact area between the first and second buffer layers 12, 15, the protective layer 13, and the pipe, further reducing the risk of foam glass breakage and improving the cold-insulating effect. For example, the first buffer layer 12 is made of aerogel pads and the second buffer layer 15 is made of ceramic wool, which can achieve better fire resistance and high-temperature resistance. In other examples, the first and second buffer layers 12, 15 can also be made of polyurethane, elastic silicone, or elastic sponge.

[0043] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of the present invention. The description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fireproof cold-insulating pipe bracket for fixing pipes, characterized in that: The cold-insulation pipe bracket includes a saddle and a fixing mechanism arranged on the saddle. The saddle is used to transfer the fixing mechanism and set it on the base. The fixing mechanism includes a pipe clamp, a protective layer, a moisture-proof layer and a cold-insulation layer arranged from the outside to the inside along the radial direction of the pipe. The cold-insulation layer is formed by wrapping at least one layer of tubular foam glass blocks around the outside of the pipe. A first axial limit plate is provided at the end of the pipe clamp. The first axial limit plate radiates radially inward from the end of the pipe clamp in a direction perpendicular to the axial direction of the pipe so as to resist the outer edge area of ​​the end face of the cold-insulation layer.

2. The fireproof cold-insulating pipe support according to claim 1, characterized in that: The cold-insulating layer is provided with a buffer strip at the circumferential joint of each layer of foam glass blocks in a circular tube shape, and the buffer strip extends along the axial direction of the tube.

3. The fireproof cold-insulating pipe support according to claim 1, characterized in that: It also includes a first buffer layer, which is arranged between the inner wall of the pipe clamp and the outer surface of the protective layer.

4. The fireproof cold-insulating pipe support according to claim 1, characterized in that: It also includes a second buffer layer, which is arranged between the inner surface of the cold insulation layer and the outer wall of the pipeline.

5. The fireproof cold-insulation pipe support according to claim 1, characterized in that: A second axial limit plate is provided on the outside of the pipe clamp, and the second axial limit plate radiates radially outward from the outer wall of the pipe in a direction perpendicular to the axial direction of the pipe so as to block the inner edge area of ​​the end face of the cold insulation layer.

6. The fireproof cold-insulation pipe support according to claim 5, characterized in that: The pipeline is provided with a rib plate radiating radially outwards in a direction away from the cold insulation layer on the second axial limit plate, and the rib plate is connected between the second axial limit plate and the pipeline.

7. The fireproof cold-insulation pipe support according to claim 5, characterized in that: A second buffer layer is provided between the axial limiting plate and the end surface of the cold-insulating layer.

8. The fireproof cold-insulation pipe support according to claim 1, characterized in that: The cold-insulating layer is configured as a single layer, two layers or multiple layers covering the outside of the pipe; and / or each layer of foam glass blocks is formed by two semi-circular tubular foam glass blocks butted together at the joint along the circumferential direction to form a circular tubular foam glass block.

9. The fireproof cold-insulation pipe support according to claim 1, characterized in that: The base is provided with first stops on both sides of the saddle so as to limit the saddle in the radial direction of the pipeline; and / or the saddle is provided with second stops on both sides of the base so as to limit the saddle in the axial direction of the pipeline.

10. The fireproof cold-insulation pipe support according to claim 1, characterized in that: The protective layer is made of metal material; and / or the buffer strip is made of elastic glass fiber; and / or the moisture-proof layer is PAP aluminum foil; and / or the first buffer layer is aerogel felt; and / or the second buffer layer is made of ceramic wool.

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