Chemical pipeline safety cover provided with arc-shaped hollow insulation board

Abstract

The invention discloses a chemical pipeline safety cover provided with an arc-shaped hollow heat preservation plate, and belongs to the field of chemical pipeline safety protection. The safety cover is of an annular structure formed by splicing at least two arc-shaped hollow heat preservation plates through bolts to wrap a pipeline, and comprises a three-layer protection structure composed of an outer protection layer, a middle hollow interlayer and inner high-temperature-resistant fiber cotton. The outer protective layer is made of 304 stainless steel or glass fiber reinforced plastic, the surface of the outer protective layer is coated with intumescent fire retardant coating, and a silicon rubber sealing strip is arranged at the joint for sealing. According to the annular coating assembly, through the rotary locking design of the movable embedded ring and the splicing ring, detachable connection of the heat preservation plate and the pipeline is achieved, connecting points are distributed in a staggered mode, and the structural stability is enhanced. The device has the advantages of light weight, high heat preservation performance and fireproof performance, is convenient to disassemble, assemble and maintain, and is suitable for safety protection of chemical pipelines.

Description

Technical Field

[0001] The invention relates to the field of chemical pipeline safety covers, in particular to a chemical pipeline safety cover provided with an arc-shaped hollow insulation plate. Background Art

[0002] Existing chemical pipeline safety covers are mostly made of a single material or have a fixed structure, which has the following problems: Insufficient thermal insulation performance: Traditional thermal insulation materials (such as rock wool and glass wool) are easily affected by the environment. After long-term use, the thermal conductivity coefficient increases and the thermal insulation effect decreases.

[0003] Inconvenient disassembly and assembly: The safety cover with fixed structure needs to be hoisted or cut as a whole, which makes maintenance and replacement difficult, time-consuming and labor-intensive.

[0004] Limited fire resistance: Ordinary metal casings are easily deformed at high temperatures and lack flame retardant protection, posing a safety hazard.

[0005] Poor sealing effect: Gaps are easily formed at the joints due to thermal expansion and contraction, leading to leakage or heat loss.

[0006] The present invention effectively solves the above problems and improves the safety and maintenance convenience of chemical pipelines through a three-layer composite structure, movable interlocking locking and fire-resistant coating design. Summary of the Invention

[0007] In response to the problems in the prior art, the present invention provides a chemical pipeline safety cover provided with an arc-shaped hollow insulation board.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a chemical pipeline safety cover provided with an arc-shaped hollow insulation board, comprising at least two arc-shaped hollow insulation boards, the arc-shaped hollow insulation boards being spliced ​​into an annular structure by bolts to cover the pipeline, the arc-shaped hollow insulation board comprising an outer protective layer having an inner embedding groove formed on the inner circular side wall, and a first movable embedding groove formed on the outer circular side wall of the outer protective layer; It also includes an annular covering component, which includes a splicing ring and a movable embedding ring. A second movable embedding groove is provided on the inner circle side wall of the splicing ring. The two sides of the movable embedding ring are movably embedded in the inside of the first movable embedding groove and the second movable embedding groove respectively, and the movable embedding ring can rotate along the first movable embedding groove.

[0009] Specifically, the arc-shaped hollow insulation board also includes a middle hollow interlayer and an inner layer of high-temperature resistant fiber cotton which are sequentially embedded in the inner embedding groove.

[0010] Specifically, the outer protective layer is made of stainless steel or glass fiber reinforced plastic, and the surface is coated with an intumescent fire retardant coating.

[0011] Specifically, a sealing groove is provided on the outer wall of the connection portion of the outer protective layer, and a silicone rubber sealing strip is embedded in the sealing groove for sealing.

[0012] Specifically, the middle hollow interlayer has a thickness of 5-30 mm and is filled with air or inert gas.

[0013] Specifically, a first bolt is provided on the side wall of the outer circle side of the splicing ring at a position corresponding to the movable embedded ring. One end of the first bolt extends to the inside of the second movable embedded groove and contacts the movable embedded ring. It can be used to lock the installation of the movable embedded ring and prevent the movable embedded ring from sliding inside the second movable embedded groove.

[0014] Specifically, the ends of the two adjacent splicing rings are each provided with a second bolt, which passes through one end of the splicing ring and is sleeved with a nut for fastening. The provision of the second bolt can facilitate the connection of the two splicing rings.

[0015] Beneficial effects of the present invention: Lightweight and high thermal insulation: It adopts a three-layer structure of "inner layer of high-temperature resistant fiber cotton + middle hollow interlayer + outer protective layer". The middle interlayer is filled with air or inert gas, which significantly reduces the heat conduction efficiency and reduces the overall weight.

[0016] The thickness of the hollow interlayer in the middle can be adjusted (5-30mm) to meet different temperature requirements.

[0017] Detachable and stable connection: The rotating locking design of the movable insert ring and the splicing ring allows the insulation board to be quickly disassembled and assembled.

[0018] The connection points between the splicing ring and the insulation board are staggered. Compared with the traditional connection only through the hoop, by adjusting the position of the splicing ring and the movable embedded ring, a multi-level locking is formed, which can effectively avoid the coaxial locking of the splicing ring and the outer protective layer. The staggered multi-level locking can avoid the problem of the splicing ring collapsing after the outer protective layer is subjected to the expansion force, and enhance the structural stability.

[0019] Fire and corrosion resistance: The outer protective layer is made of 304 stainless steel or glass fiber reinforced plastic, and the surface is coated with intumescent fire retardant paint, which expands to form an insulating layer when exposed to fire, delaying the spread of fire.

[0020] Silicone rubber sealing strips seal the joints to prevent the penetration of corrosive gases and extend service life.

[0021] Sealing and safety protection: The sealing groove is combined with the silicone rubber sealing strip to effectively isolate the external environment and prevent pipe leakage or heat loss.

[0022] The overall structure is compact and can resist mechanical impact and chemical corrosion, ensuring the safe operation of chemical pipelines.

[0023] In summary, the present invention achieves high efficiency, reliability and convenience in chemical pipeline safety protection through structural innovation and material optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 A schematic diagram of the structure of a chemical pipeline safety cover provided by the present invention with an arc-shaped hollow insulation board Figure 1 ; Figure 2 A schematic diagram of the structure of a chemical pipeline safety cover provided by the present invention with an arc-shaped hollow insulation board Figure 2 ; Figure 3 This is a disassembled diagram of a chemical pipeline safety cover provided by the present invention and provided with an arc-shaped hollow insulation board; Figure 4 A cross-sectional view of a chemical pipeline safety cover provided by the present invention with an arc-shaped hollow insulation board Figure 1 ; Figure 5 A cross-sectional view of a chemical pipeline safety cover provided by the present invention with an arc-shaped hollow insulation board Figure 2 .

[0026] In the figure: 1. Arc-shaped hollow insulation board; 11. Outer protective layer; 111. Inner embedded groove; 112. Sealing groove; 113. Silicone rubber sealing strip; 114. First movable embedded groove; 12. Middle hollow interlayer; 13. Inner layer of high-temperature resistant fiber cotton; 2. Annular covering assembly; 21. Splicing ring; 211. Second movable embedded groove; 212. First bolt; 213. Second bolt; 22. Movable embedded ring. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1-Figure 5 As shown, the present invention provides the following technical solutions: Example 1: A chemical pipeline safety cover provided with an arc-shaped hollow insulation board, comprising two arc-shaped hollow insulation boards 1 symmetrically arranged on both sides of the pipeline, the arc-shaped hollow insulation boards 1 are spliced ​​into an annular structure by bolts to cover the pipeline, the arc-shaped hollow insulation board 1 comprises an outer protective layer 11 with an embedded groove 111 on the inner circular side wall, an intermediate hollow interlayer 12 embedded in the embedded groove 111 in sequence, and an inner layer of high-temperature resistant fiber cotton 13; the outer protective layer 11 is 304 stainless steel or glass fiber reinforced plastic, and the surface is coated with an intumescent fire retardant coating.

[0029] When in use, it is protected by a three-layer structure of "ceramic fiber cotton + hollow interlayer + stainless steel / FRP outer layer", which combines lightweight and high thermal insulation performance, and can be disassembled and assembled by bolts, making it easy to disassemble, assemble and maintain the insulation board.

[0030] Embodiment 2: This embodiment is different from the technical solution of embodiment 1, including a first movable embedding groove 114 on the outer circular side wall of the outer protective layer 11; and an annular covering component 2, the annular covering component 2 includes a splicing ring 21 and a movable embedding ring 22, and a second movable embedding groove 211 is formed on the inner circular side wall of the splicing ring 21. The two sides of the movable embedding ring 22 are respectively movably embedded in the interior of the first movable embedding groove 114 and the second movable embedding groove 211, and the movable embedding ring 22 can rotate along the first movable embedding groove 114. A first bolt 212 is provided on the side wall of the outer circle of the splicing ring 21 at a position corresponding to the movable embedded ring 22. The first bolt 212 extends to one end inside the second movable embedded groove 211 and contacts the movable embedded ring 22. It can be used to lock the installation of the movable embedded ring 22, and can prevent the movable embedded ring 22 from sliding inside the second movable embedded groove 211. The ends of the two adjacent splicing rings 21 are both provided with a second bolt 213. The second bolt 213 passes through one end of the splicing ring 21 and is sleeved with a nut for tightening.

[0031] Compared to directly fixing the insulation board to both sides of the pipe by bolts or hoops to form an annular structure covering the pipe, when using the present invention, first, the movable embedded ring 22 arranged concentrically is rotated along the concentricity of the second movable embedded groove 211, so that the movable embedded ring 22 is completely located inside the second movable embedded groove 211 and is locked by the first bolt 212, so that the movable embedded ring 22 is integrated with the splicing ring 21; Then, the movable insert ring 22 is similarly rotated into the first movable insert groove 114, so that the movable insert ring 22, the splicing ring 21 and the outer protective layer 11 are movably arranged; Secondly, when the insulation board needs to be sleeved onto the pipe, the two arc-shaped hollow insulation boards 1 are symmetrically buckled on both sides of the pipe, and the two splicing rings 21 are pre-connected and locked by the second bolts 213 and nuts to prevent the insulation board from falling off; Finally, the two splicing rings 21 together with the movable embedded ring 22 are rotated 90° along the first movable embedded groove 114 around the two arc-shaped hollow insulation panels 1, so that the splicing ring 21 and the arc-shaped hollow insulation panel 1 are staggered, and the two ends of the same movable embedded ring 22 are respectively located inside the two first movable embedded grooves 114, and then the second bolt 213 and the nut are tightened to tighten the splicing ring 21.

[0032] The connection points of the two movable embedded rings 22 and the splicing ring 21 are staggered with the connection points of the two arc-shaped hollow insulation boards 1, forming a multi-level locking, which can improve the connection effect between the arc-shaped hollow insulation board 1 and the pipeline.

[0033] Example 3: This example is different from the technical solution of Example 2 A sealing groove 112 is formed on the outer wall of the connection portion of the outer protective layer 11 , and a silicone rubber sealing strip 113 is embedded in the sealing groove 112 for sealing.

[0034] The middle hollow interlayer 12 has a thickness of 5-30 mm and is filled with air or inert gas.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical pipeline safety cover provided with an arc-shaped hollow insulation board, comprising at least two arc-shaped hollow insulation boards (1), wherein the arc-shaped hollow insulation boards (1) are spliced ​​into an annular structure by bolts to cover the pipeline, characterized in that: The arc-shaped hollow insulation board (1) comprises an outer protective layer (11) with an inner embedding groove (111) formed on an inner circular side wall, and a first movable embedding groove (114) formed on an outer circular side wall of the outer protective layer (11); The annular covering assembly (2) includes a splicing ring (21) and a movable embedded ring (22), a second movable embedded groove (211) is provided on the inner circular side wall of the splicing ring (21), and two sides of the movable embedded ring (22) are movably embedded in the first movable embedded groove (114) and the second movable embedded groove (211), respectively, and the movable embedded ring (22) can rotate along the first movable embedded groove (114); Also includes the locking method of the pipe safety cover: First, the movable embedded ring (22) arranged concentrically is rotated concentrically along the second movable embedded groove (211), the movable embedded ring (22) is completely located inside the second movable embedded groove (211) and is locked by the first bolt (212), and the movable embedded ring (22) is integrated with the splicing ring (21); Then, the movable embedded ring (22) is similarly rotated to the inside of the first movable embedded groove (114), so that the movable embedded ring (22), the splicing ring (21) and the outer protective layer (11) are movably arranged; Secondly, when the insulation board needs to be sleeved onto the pipe, the two arc-shaped hollow insulation boards (1) are symmetrically fastened on both sides of the pipe, and the two splicing rings (21) are pre-connected and locked by the second bolt (213) and the nut to prevent the insulation board from falling off; Finally, the two splicing rings (21) together with the movable embedded ring (22) are rotated along the first movable embedded groove (114), so that the splicing ring (21) and the arc-shaped hollow insulation board (1) are staggered, and the two ends of the same movable embedded ring (22) are respectively located inside the two first movable embedded grooves (114), and then the second bolt (213) and the nut are tightened to tighten the splicing ring (21).

2. A chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: The arc-shaped hollow insulation board (1) further comprises a middle hollow interlayer (12) and an inner layer of high-temperature resistant fiber cotton (13) which are sequentially embedded in the inner embedding groove (111).

3. The chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: The outer protective layer (11) is made of 304 stainless steel or glass fiber reinforced plastic, and its surface is coated with an intumescent fire retardant coating.

4. The chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: A sealing groove (112) is provided on the outer wall of the connection portion of the outer protective layer (11), and a silicone rubber sealing strip (113) is embedded in the sealing groove (112) for sealing.

5. The chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: The middle hollow interlayer (12) has a thickness of 5-30 mm and is filled with air or inert gas.

6. The chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: A first bolt (212) is provided on the side wall of the outer circumference of the splicing ring (21) at a position corresponding to the movable embedded ring (22), and one end of the first bolt (212) extends into the interior of the second movable embedded groove (211) and contacts the movable embedded ring (22).

7. The chemical pipeline safety cover provided with an arc-shaped hollow insulation board according to claim 1, characterized in that: The ends of the two adjacent splicing rings (21) are each provided with a second bolt (213), and one end of the second bolt (213) passes through the splicing ring (21) and is sleeved with a nut for fastening.

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