A ceramic fiber reinforced composite insulation structure for pipes

Abstract

The utility model provides a kind of ceramic fiber reinforced composite heat preservation structure for pipeline, it is related to pipeline heat preservation technical field, comprising: pipeline, the outer side position of the pipeline is wrapped with a layer of inner layer heat insulation felt, the outer side position of inner layer heat insulation felt is wrapped with a layer of ceramic fiber insulation layer, the outer side position of ceramic fiber insulation layer is installed two symmetric distribution vacuum heat shield, a group of adhering strips is installed between two vacuum heat shields, a group of vertical insertion holes is set on the basis of adhering strip. Through inner layer heat insulation felt realizes basic heat insulation, ceramic fiber insulation layer enhances heat preservation and structural strength, vacuum heat shield constructs efficient vacuum heat shield, cooperates the sealing, buffering and positioning effect of adhering strip and isolation ring, so that the whole heat preservation structure is closely attached to pipeline, effectively blocks heat transfer, while having good anti-deformation, anti-damage capacity, applicable to the heat preservation demand of pipeline under various working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline heat preservation technical field especially relates to a kind of ceramic fiber reinforced composite heat insulation heat preservation structure for pipeline. BACKGROUND

[0002] In the field of modern industrial production and building facilities, as the key carrier for conveying various fluid media, the heat preservation performance of pipeline is crucial. During the process of pipeline conveying fluid, heat loss will cause energy waste and may also lead to the temperature drop of fluid in the pipeline, affecting the use effect. Currently, common pipeline heat preservation structures mostly use single heat preservation materials, such as polyurethane foam and rock wool. Traditional pipeline heat preservation structures have exposed many problems in practical application, as follows: Although polyurethane foam and rock wool materials can provide heat preservation for pipeline, they are brittle and prone to breakage during construction. Moreover, they are irritating to the skin of construction workers. Some soft heat preservation materials have certain heat insulation capacity, but they are prone to deformation and breakage due to external pressure, wind and rain in daily use. In addition, heat preservation materials are also prone to deformation and breakage during thermal expansion and contraction, resulting in gaps in the heat preservation layer and greatly increasing the risk of heat loss. Hard heat preservation materials have high strength. For example, the installation of vacuum heat insulation plates often requires the use of complex locking methods such as bolts, which not only consumes time and effort during installation and requires high technical skills of construction workers, but also causes the bolts to loosen after long-term use, resulting in a decrease in the connection stability of vacuum heat insulation plates and affecting the overall heat preservation performance. Frequent maintenance and replacement undoubtedly increase the cost investment. SUMMARY

[0003] The utility model relates to a kind of ceramic fiber reinforced composite heat insulation heat preservation structure for pipeline, which realizes basic heat insulation through inner layer heat preservation felt, enhances heat preservation and structural strength through ceramic fiber heat preservation layer, constructs high-efficiency vacuum heat insulation barrier through vacuum heat insulation cover, and cooperates with the sealing, buffering and positioning effects of adhesion strip, isolation ring and other components, so that the entire heat preservation structure closely adheres to the pipeline, effectively blocks heat transfer, has good anti-deformation and anti-damage capacity, and is suitable for pipeline heat preservation requirements under various working conditions.

[0004] The utility model provides a kind of ceramic fiber reinforced composite heat insulation heat preservation structure for pipeline, specifically includes: pipeline, the outer side position of the pipeline is wrapped with a layer of inner layer heat preservation felt, the outer side position of inner layer heat preservation felt is wrapped with a layer of ceramic fiber heat preservation layer, two symmetrical vacuum heat insulation covers are installed at the outer side position of ceramic fiber heat preservation layer, a group of adhesion strips are installed between the two vacuum heat insulation covers, a group of vertical insertion holes are formed on the basis of adhesion strip, and an isolation ring is respectively installed above the insertion hole.

[0005] Further, the ceramic fiber thermal insulation layer network structure, the inner side and the outer side of the inner layer thermal insulation felt are respectively provided with a group of network protrusions, the inner layer thermal insulation felt and the ceramic fiber thermal insulation layer are filled with adhesive glue.

[0006] Further, the two sides of the vacuum heat shield are respectively provided with a positioning plate, the positioning plate is a circular arc structure, and the ceramic fiber thermal insulation layer is hidden in the inner side of the positioning plate.

[0007] Further, the inner side of the vacuum heat shield is a hollow structure, the two sides of the upper position of the vacuum heat shield are respectively provided with a group of vertical butt rods, the butt rods are cylindrical structures, the two sides of the bottom position of the vacuum heat shield are provided with a group of butt holes corresponding to the butt rods, and the butt rods pass through the inside of the butt holes.

[0008] Further, an installation hole is formed in the inner side of the adhesive strip, the installation hole is a rectangular structure, and a buffer strip is installed in the inner side of the installation hole.

[0009] Further, a group of vertical insertion holes are formed in the base of the adhesive strip, the insertion holes correspond to the butt rods, a hidden groove is formed in the upper position of the insertion hole, the hidden groove is a conical structure, an isolation ring is installed in the inner side of the hidden groove, and the isolation ring corresponds to the hidden groove.

[0010] Further, a buffer groove is formed in the two sides of the adhesive strip, and the buffer groove is a circular arc structure.

[0011] Further, a protective film is attached to the outer side of the vacuum heat shield, the two sides of the vacuum heat shield are respectively provided with a positioning block, the positioning block is a rectangular structure, a group of positioning grooves corresponding to the positioning blocks are formed in the edge position of the protective film, the positioning blocks extend into the inside of the positioning grooves, and the inner layer thermal insulation felt, the ceramic fiber thermal insulation layer, the vacuum heat shield, the positioning plate, the butt hole, the butt rod and the protective film are cooperated to form a thermal insulation structure.

[0012] The utility model provides a kind of ceramic fiber reinforced composite heat insulation structure for pipeline, with following beneficial effects: In the utility model, inner layer thermal insulation felt is wrapped outside pipeline to form basic heat insulation and heat preservation, outer side of inner layer thermal insulation felt continues to wrap outer layer ceramic fiber thermal insulation layer of network structure, ceramic fiber thermal insulation layer forms secondary heat insulation and heat preservation effect, and simultaneously, it is closely combined with inner layer thermal insulation felt by network protrusion and high-temperature adhesive glue, to reduce interlayer gap heat leakage; Vacuum heat shield is installed in the outer side of ceramic fiber thermal insulation layer, vacuum heat shield blocks heat conduction and heat convection by hollow vacuum structure, to form three-layer core heat insulation system, compared with traditional single heat preservation structure, overall heat insulation capacity is greatly improved, to effectively reduce pipeline heat loss, multiple sealing structures are cooperated, to maximize reduce heat loss from gap, to further strengthen overall heat preservation performance.

[0013] The vacuum insulation cover not only achieves a three-layer insulation effect but also wraps and protects the ceramic fiber insulation layer, preventing it from being damaged by external wind, rain, and friction. The outer protective film can block rainwater and dust from impacting the vacuum insulation cover, extending the service life of each component and reducing the frequency of maintenance.

[0014] With the help of the connecting rod, the vacuum insulation cover can be quickly and symmetrically installed. Adhesive strips are set between the vacuum insulation covers to achieve a quick and stable connection between the upper and lower vacuum insulation covers, simplifying the construction process and solving the problem of traditional vacuum insulation panels being locked with bolts. The inner buffer strip of the adhesive strip can absorb the deformation stress caused by the thermal expansion and contraction of the pipeline, and prevent the insulation structure from cracking due to pipeline deformation. The structure of each layer works in conjunction with the elastic buffer component through the adaptive design to effectively cope with slight displacement during pipeline operation, prevent gaps in the insulation layer, and ensure long-term stable insulation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the axial structure of the thermal insulation structure of this utility model after assembly is shown. Figure 2 This diagram shows an axonometric view of the disassembled structure of the thermal insulation structure of this utility model. Figure 3 This diagram shows a partial axial side view of the thermal insulation structure of this utility model from an elevation perspective; Figure 4 A schematic diagram of the axial side structure of a partially cut section of the thermal insulation structure of this utility model is shown. Figure 5 A schematic diagram of the axial side structure of a further cross-section of the thermal insulation structure of this utility model is shown; Figure 6 The diagram shows a sectional view of the thermal insulation structure of this utility model from an upward perspective. Figure 7 A schematic diagram of the axial structure of the isolation ring and adhesive strip of this utility model is shown; Figure 8 This utility model illustrates Figure 5 A magnified structural diagram at point A.

[0018] List of reference numerals 1. Pipeline; 2. Thermal insulation structure; 201. Inner thermal insulation felt; 202. Ceramic fiber thermal insulation layer; 203. Vacuum insulation cover; 204. Positioning plate; 205. Connecting hole; 206. Connecting rod; 207. Protective film; 3. Isolation ring; 4. Adhesive strip; 401. Buffer strip; 402. Buffer groove; 403. Insertion hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1 to 8 : This utility model proposes a ceramic fiber reinforced composite thermal insulation structure for pipelines, comprising: a pipeline 1, an inner insulation felt 201 wrapped around the outer side of the pipeline 1, a ceramic fiber insulation layer 202 wrapped around the outer side of the inner insulation felt 201, two symmetrically distributed vacuum insulation covers 203 installed on the outer side of the ceramic fiber insulation layer 202, the ceramic fiber insulation layer 202 having a mesh structure, and a set of mesh protrusions on the inner and outer sides of the inner insulation felt 201, the inner insulation felt 201 being made of aerogel felt material, which has an extremely low thermal conductivity and can effectively prevent heat transfer from the pipeline 1 to the outside, thus providing good initial insulation. For initial insulation, an adhesive is filled between the inner insulation felt 201 and the ceramic fiber insulation layer 202. The adhesive is made of a high-temperature resistant material available in the prior art, selected according to actual needs. Specifically, the mesh structure of the ceramic fiber insulation layer 202 enhances the mechanical strength of the insulation structure 2, preventing the inner insulation felt 201 from deforming due to external pressure. The mesh protrusions on the inner and outer sides of the inner insulation felt 201 increase the contact area and friction with the outer wall of the pipe 1 and the ceramic fiber insulation layer 202. Combined with the high-temperature resistant adhesive, the two layers are tightly bonded, reducing heat loss caused by gaps between the layers. At the same time, the high-temperature resistant adhesive ensures the stable connection between the two layers under high-temperature conditions. In this embodiment, a positioning plate 204 is provided on each of the two sides of the vacuum insulation cover 203. The positioning plate 204 has an arc structure, and the ceramic fiber insulation layer 202 is hidden inside the positioning plate 204. Specifically, the arc structure of the positioning plate 204 is adapted to the outer curvature of the pipe 1, which can play a role in positioning the vacuum insulation cover 203 and the ceramic fiber insulation layer 202, ensuring precise docking of the vacuum insulation cover 203 and the ceramic fiber insulation layer 202. At the same time, the positioning plate 204 wraps the ceramic fiber insulation layer 202 inside, preventing the ceramic fiber insulation layer 202 from being directly exposed to the external environment, reducing damage caused by wind, rain or external friction, and extending its service life. For longevity, the inner side of the vacuum insulation cover 203 is hollow. On both sides of the upper part of the vacuum insulation cover 203, there is a set of vertical connecting rods 206, which are cylindrical. On both sides of the bottom part of the vacuum insulation cover 203, there are connecting holes 205 corresponding to the connecting rods 206. The connecting rods 206 pass through the interior of the connecting holes 205. Specifically, the hollow structure of the vacuum insulation cover 203 can utilize the vacuum environment to block heat conduction and convection, further improving the overall insulation effect. The cooperation between the connecting rods 206 and the connecting holes 205 enables quick and precise docking of the upper and lower vacuum insulation covers 203, simplifying the installation process and improving construction efficiency. In this embodiment, a protective film 207 is adhered to the outer side of the vacuum insulation cover 203. A positioning block is provided on each side of the vacuum insulation cover 203. The positioning block has a rectangular structure. A set of positioning grooves corresponding to the positioning blocks are opened at the edge of the protective film 207. The positioning blocks extend into the interior of the positioning grooves. The inner insulation felt 201, ceramic fiber insulation layer 202, vacuum insulation cover 203, positioning plate 204, docking hole 205, docking rod 206, and protective film 207 cooperate with each other to form the insulation structure 2. The protective film 207 is selected from commonly used thin and light materials for insulation according to actual needs. Specifically, the thin and light protective film 207 can block external rainwater and dust from directly impacting the vacuum insulation cover 203, extending the service life of the vacuum insulation cover 203. At the same time, the layers of the insulation structure 2 work together to form a multi-layer insulation system of initial insulation, enhanced insulation, vacuum insulation, and protective sealing, maximizing the thermal insulation performance of the pipeline 1. In this embodiment, an isolation ring 3 is installed above the insertion hole 403, and an adhesive strip 4 is installed between the two vacuum insulation covers 203. A set of vertical insertion holes 403 are formed on the adhesive strip 4, and an installation hole with a rectangular structure is formed on the inner side of the adhesive strip 4. A buffer strip 401 is installed on the inner side of the installation hole. Specifically, the rectangular installation hole provides a stable installation space for the buffer strip 401, which absorbs the deformation stress of the pipe 1 caused by thermal expansion and contraction, preventing the deformation of the pipe 1 from causing the insulation structure 2 to crack. It also fills the small gap between the adhesive strip 4 and the vacuum insulation cover 203, reducing heat loss from the gap. The buffer strip 401 serves both as a buffer and a heat insulation seal. A set of vertical insertion holes 403 are formed on the adhesive strip 4, corresponding to the connecting rod 206. A hidden groove with a conical structure is formed above the insertion hole 403, and the isolation ring 3 is installed in the hidden groove. On the inner side, the isolation ring 3 corresponds to the hidden groove. Specifically, the conical hidden groove positions and conceals the isolation ring 3. The isolation ring 3 enhances the structural strength around the insertion hole 403. At the same time, the isolation ring 3 isolates the adhesive around the insertion hole 403, achieving easy docking of the vacuum insulation cover 203. A buffer groove 402 is opened on each side of the adhesive strip 4. The buffer groove 402 has an arc structure. The adhesive strip 4 is made of a material with heat insulation effect according to actual needs. Specifically, the arc structure of the buffer groove 402 can increase the deformation margin of the adhesive strip 4. When the pipe 1 or the heat insulation structure 2 undergoes slight displacement, the buffer groove 402 can prevent the adhesive strip 4 from breaking due to pulling. The adhesive strip 4 with heat insulation effect can itself help improve the overall heat insulation performance. At the same time, the buffer groove 402 can reduce the stress concentration at the docking point of the adhesive strip 4 and the vacuum insulation cover 203, ensuring that the adhesive strip 4 and the vacuum insulation cover 203 are tightly attached, further blocking the heat transfer path.

[0021] Example 2, based on Example 1, such as Figures 1-6 As shown, the vacuum insulation covers 203 are spliced ​​together according to the perimeter of the pipe. Adjacent vacuum insulation covers 203 are connected using a special adhesive. A thin layer of thermally conductive adhesive is applied between the vacuum insulation cover 203 and the ceramic fiber insulation layer 202 to enhance the interlayer connection and minimize heat conduction.

[0022] The working principle of this embodiment: According to the diameter and length of pipe 1, cut the inner insulation felt 201 and the ceramic fiber insulation layer 202 to ensure that the cut materials can completely wrap pipe 1 and leave an overlap of five to ten millimeters at the edges; process an appropriate amount of vacuum insulation cover 203 according to the circumference of pipe 1. Tightly wrap the inner insulation felt 201 around the outside of the pipe 1, apply high-temperature adhesive to the overlap and press it firmly to avoid air between layers, and complete the construction of the basic insulation layer. Apply high-temperature resistant adhesive evenly to the outside of the already laid inner insulation felt 201, and wrap the mesh structure ceramic fiber insulation layer 202 around the outside of the inner insulation felt 201, so that the inner insulation felt 201 and the ceramic fiber insulation layer 202 are tightly bonded together with the mesh protrusions. Take two symmetrical vacuum insulation covers 203, align the positioning plates 204 on both sides of them with the edge of the ceramic fiber insulation layer 202, so that the ceramic fiber insulation layer 202 is hidden inside the positioning plates 204; the docking rod 206 of the upper vacuum insulation cover 203 is precisely aligned with the docking hole 205 of the lower vacuum insulation cover 203. Take the adhesive strip 4 with the buffer strip 401, and position the isolation ring 3 in the hidden groove of the conical structure above the insertion hole 403 of the adhesive strip 4; attach it to the joint of the two vacuum heat shields 203, ensuring that the buffer strip 401 on the inner side of the adhesive strip 4 is aligned with the center of the joint; press the adhesive strip 4 to make it fit tightly with the vacuum heat shield, and use the buffer strip 401 to absorb the deformation stress of the pipe 1 due to thermal expansion and contraction, while filling the tiny gap at the joint; To assemble the vacuum insulation cover 203, insert the docking rod 206 into the docking hole 205 of the lower vacuum insulation cover to complete the docking of the vacuum insulation cover 203. Multiple vacuum insulation covers 203 are arranged sequentially along the perimeter of the pipe. A thin layer of thermally conductive adhesive is evenly applied to the area inside the vacuum insulation cover that contacts the ceramic fiber insulation layer 202 to enhance the stability of the interlayer connection. At the same time, because the amount of thermally conductive adhesive is small and the thermal conductivity is low, it avoids adding extra heat conduction paths. Take a thin protective film 207 and align the positioning groove on its edge with the rectangular positioning blocks on both sides of the vacuum heat insulation cover 203 so that the positioning blocks are fully embedded in the positioning groove to achieve precise positioning of the protective film 207; slowly lay the protective film 207 from one end of the vacuum heat insulation cover 203 to the other end to block rainwater and dust from impacting the vacuum heat insulation cover 203. If the protective film 207 is found to be damaged, replace it with a new one in time; if the adhesive strip 4 is aged, replace it with a new one and reinstall the isolation ring 3 to ensure stable long-term heat preservation effect.

Claims

1. A ceramic fiber reinforced composite thermal insulation structure for pipelines, characterized in that, include: Pipe (1), ceramic fiber insulation layer (202) and vacuum insulation cover (203). The outer side of the pipe (1) is wrapped with an inner layer insulation felt (201). The outer side of the inner layer insulation felt (201) is wrapped with a ceramic fiber insulation layer (202). Two symmetrically distributed vacuum insulation covers (203) are installed on the outer side of the ceramic fiber insulation layer (202). A set of adhesive strips (4) is installed between the two vacuum insulation covers (203). A set of vertical through holes (403) is opened on the adhesive strips (4). An isolation ring (3) is installed above the through holes (403).

2. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, The inner and outer sides of the inner insulation felt (201) are provided with a set of mesh protrusions, and the inner insulation felt (201) and the ceramic fiber insulation layer (202) are filled with adhesive.

3. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, The vacuum heat insulation cover (203) is provided with a positioning plate (204) on each side, and the ceramic fiber insulation layer (202) is hidden inside the positioning plate (204).

4. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, The inner side of the vacuum heat shield (203) is hollow. A set of vertical docking rods (206) are provided on both sides of the upper vacuum heat shield (203). A set of docking holes (205) corresponding to the docking rods (206) are opened on both sides of the bottom vacuum heat shield (203). The docking rods (206) pass through the interior of the docking holes (205).

5. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, An installation hole is provided on the inner side of the adhesive strip (4), and a buffer strip (401) is installed on the inner side of the installation hole.

6. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, A set of vertical through holes (403) are made on the basis of the adhesive strip (4). The through holes (403) correspond to the connecting rod (206). A hidden groove is made above the through holes (403). The isolation ring (3) is installed on the inner side of the hidden groove. The isolation ring (3) corresponds to the hidden groove.

7. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, A buffer groove (402) is opened on each side of the adhesive strip (4).

8. The ceramic fiber reinforced composite thermal insulation structure for pipelines according to claim 1, characterized in that, A protective film (207) is adhered to the outer side of the vacuum heat insulation cover (203). A positioning block is provided on each side of the vacuum heat insulation cover (203). A set of positioning grooves corresponding to the positioning blocks are opened at the edge of the protective film (207). The positioning blocks extend into the interior of the positioning grooves. The inner heat insulation felt (201), ceramic fiber heat insulation layer (202), vacuum heat insulation cover (203), positioning plate (204), docking hole (205), docking rod (206), and protective film (207) cooperate with each other to form a heat insulation structure (2).

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