Detachable heat preservation sleeve for asphalt pipeline heat tracing

Abstract

The utility model relates to pipeline heat preservation technical field, concretely relates to a detachable heat preservation sleeve of asphalt pipeline heat tracing, including heat preservation sleeve body, the heat preservation sleeve body is by at least two heat preservation unit module and is detachably spliced through quick locking mechanism and is formed, forms the tubular structure of wrapping pipeline, the heat preservation unit module includes inner lining, main heat preservation layer, reflection layer and outer protective layer from inside to outside in proper order, the quick locking mechanism is located on two longitudinal splicing edges of heat preservation sleeve body and includes the lock catch band of setting in one side and the multiple lock catch male of setting in the other side, the outside of heat preservation sleeve body is fastened through a plurality of connecting pieces, the utility model discloses through modularization, quick locking and multilayer composite structure design, effectively solved the problem that traditional asphalt pipeline heat preservation sleeve is inconvenient to dismount, heat bridge effect is obvious and maintenance cost is high, has promoted the operation efficiency and economy of heat tracing system significantly.

Description

Technical Field

[0001] This utility model relates to the field of pipeline insulation technology, specifically to a detachable insulation sleeve for asphalt pipeline heat tracing. Background Technology

[0002] Asphalt is prone to solidification due to temperature drops during transportation, storage, or processing, requiring a heat tracing system (such as electric heating tape or steam heating pipe) to maintain the asphalt temperature inside the pipeline. The insulation performance of the heat tracing pipeline directly affects the heat tracing efficiency and energy consumption; therefore, high-efficiency insulation devices are necessary.

[0003] Traditional asphalt pipeline heat tracing insulation jackets typically employ an integral structure, usually consisting of a single insulation material (such as rock wool or polyurethane) wrapped around the pipeline and secured with cable ties or wire. However, this type of insulation jacket has the following significant drawbacks: First, the integral structure makes disassembly and assembly cumbersome, requiring the untying of cable ties and removal of insulation material layer by layer. This is especially time-consuming and labor-intensive, requiring complete removal of the insulation jacket during maintenance of the heat tracing element or partial pipeline maintenance. Second, the integral structure cannot adapt to pipelines of different lengths or outer diameters. If the pipeline needs to be extended or modified, the insulation jacket is difficult to match, resulting in poor versatility. Third, the longitudinal joints of the integral structure (such as the overlap of two insulation materials) are prone to thermal bridging, leading to localized heat loss and reducing overall insulation efficiency. Fourth, the outer layer of the insulation jacket is often made of ordinary cloth or plastic, which lacks sufficient high-temperature resistance, corrosion resistance, and waterproofing. It is prone to aging and damage with long-term use, requiring frequent replacement. Fifth, when pipeline interfaces, instruments, or valves need to be exposed for operation, the insulation jacket structure must be damaged, and the original insulation performance cannot be restored after repair. The aforementioned problems seriously affect the operating efficiency and maintenance economy of asphalt pipeline heat tracing systems. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable insulation sleeve for asphalt pipeline heat tracing. Through modular splicing design, quick locking mechanism and multi-layer composite insulation structure, it solves the problems of inconvenient disassembly and assembly, obvious thermal bridging effect, poor adaptability and high maintenance cost of traditional insulation sleeves.

[0005] The technical solution provided by this utility model is a detachable heat insulation sleeve for asphalt pipeline heat tracing, including a heat insulation sleeve body. The heat insulation sleeve body is formed by detachably splicing at least two heat insulation unit modules through a quick locking mechanism to form a cylindrical structure that wraps around the pipeline.

[0006] The thermal insulation unit module includes, from the inside out, an inner lining layer, a main thermal insulation layer, a reflective layer, and an outer protective layer.

[0007] The quick-locking mechanism is located on the two longitudinal splicing edges of the insulation sleeve body and includes a locking strap on one side and multiple locking male heads on the other side.

[0008] The outer side of the insulation sleeve body is fastened by multiple connectors.

[0009] As a preferred technical solution of this utility model, the quick locking mechanism further includes a sealing and heat-insulating strip covering the locking point. One side of the sealing and heat-insulating strip is fixedly connected to the outer protective layer of one heat-insulating unit module, and the other side is detachably connected to the outer protective layer of another heat-insulating unit module by Velcro or snap fastener.

[0010] As a preferred embodiment of this utility model, the inner lining layer is a high-temperature resistant fiber cloth, the main insulation layer is a ceramic fiber felt or glass wool felt, the reflective layer is an aluminum foil or stainless steel foil, and the outer protective layer is a silicone-coated glass fiber cloth or a fluororubber-coated glass fiber cloth.

[0011] As a preferred embodiment of this utility model, the connector is either a high-temperature resistant fireproof Velcro strap or a cable tie.

[0012] As a preferred technical solution of this utility model, the inner shape of the heat insulation unit module is adapted to the shape of the pipe and its heat tracing element that it is wrapped.

[0013] As a preferred technical solution of this utility model, the end of the heat insulation sleeve body is provided with an adjustable radial tightening mechanism, which is a tightening band or an elastic closing ring.

[0014] As a preferred technical solution of this utility model, the insulation sleeve body is provided with a reserved hole for exposing pipe interfaces, instruments or valves, and an openable insulation cover is provided at the reserved hole.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] 1. Modular splicing design: The insulation jacket body is composed of multiple detachable insulation unit modules. The number of modules can be flexibly adjusted according to the length or diameter of the pipeline to adapt to different specifications of asphalt pipelines. When a local module is damaged, only the individual module needs to be replaced, without the need for the entire module to be scrapped, which significantly reduces maintenance costs.

[0017] 2. Quick-locking mechanism: The quick splicing between modules is achieved through the cooperation of the locking strap and the locking male head. Combined with the Velcro / snap fastener connection of the sealing insulation tape, it solves the cumbersome problem of traditional insulation sleeves relying on cable ties for disassembly and assembly, improving disassembly and assembly efficiency by more than 50%, and facilitating daily maintenance of heat tracing elements and pipelines.

[0018] 3. Multi-layer composite insulation structure: The inner lining layer (high-temperature resistant fiber cloth) is corrosion-resistant and wear-resistant, protecting the inner insulation layer; the main insulation layer (ceramic fiber felt / glass wool felt) uses low thermal conductivity materials (thermal conductivity ≤0.04W / (m·K)) to significantly reduce heat conduction loss; the reflective layer (aluminum foil / stainless steel foil) reflects heat radiation and reduces radiative heat loss; the outer protective layer (silicone / fluororubber coated fiberglass cloth) is high temperature resistant (≥200℃), waterproof and dustproof, extending the service life of the insulation jacket.

[0019] 4. Optimized sealing, insulation, and adaptability: The sealing insulation tape covers the longitudinal splicing seam, eliminating the thermal bridging effect and improving the overall insulation efficiency (tests show that heat loss at the splicing point is reduced by 30% compared to the traditional structure); the inner shape of the insulation unit module is adapted to the shape of the pipe and heat tracing element (such as matching the Φ150-300mm pipe and the bending path of the heat tracing tape through molding), reducing cavities and avoiding heat loss due to air convection.

[0020] 5. Radial sealing and convenient operation: The tightening straps or elastic closing rings at the ends are adjustable to seal the openings at both ends of the insulation sleeve, preventing heat loss from the ends and the intrusion of rainwater and dust; the design of the reserved holes and the openable and closable insulation cover allows operation of pipe interfaces, instruments or valves without disassembling the entire insulation sleeve. After operation, closing the insulation cover restores the insulation state, taking into account both maintenance convenience and insulation continuity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a detachable insulation sleeve for asphalt pipeline heat tracing according to this utility model. Figure 1 .

[0022] Figure 2 This is a schematic diagram of the structure of a detachable insulation sleeve for asphalt pipeline heat tracing according to this utility model. Figure 2 .

[0023] Figure 3 This is a longitudinal cross-sectional three-dimensional structural diagram of a detachable heat-tracing jacket for asphalt pipelines according to the present invention.

[0024] Figure 4 This is a cross-sectional three-dimensional structural view of the quick-locking mechanism of a detachable insulation sleeve for asphalt pipeline heat tracing according to this utility model.

[0025] As shown in the figure:

[0026] 1. Insulation jacket body; 2. Insulation unit module; 3. Connector; 4. Inner lining layer; 5. Main insulation layer; 6. Reflective layer; 7. Outer protective layer; 8. Locking strap; 9. Locking male head; 10. Sealing insulation tape; 11. Velcro; 12. Radial tightening mechanism; 13. Reserved hole; 14. Insulation cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] As per the instruction manual Figure 1-4 As shown, a detachable insulation sleeve for asphalt pipeline heat tracing includes an insulation sleeve body 1, which is composed of two insulation unit modules 2 spliced ​​into a cylindrical structure by a quick locking mechanism, and wrapped around a Φ200mm asphalt pipeline and the heat tracing cable.

[0031] Specifically, each insulation unit module 2 consists of, from the inside out: an inner lining layer 4 (300g / m²). 2 Aramid fiber cloth (temperature resistance ≥300℃), main insulation layer 5 (10mm thick ceramic fiber felt, thermal conductivity 0.038W / (m·K)), reflective layer 6 (0.15mm thick aluminum foil, embossed surface to enhance adhesion), outer protective layer 7 (0.5mm thick silicone coated fiberglass cloth, temperature resistance ≥250℃).

[0032] Specifically, the quick-locking mechanism is located at the longitudinal splicing edge of the insulation unit module 2: a locking strap 8 (50mm wide Velcro 11) is sewn onto the outer protective layer 7 of one side of the module, and corresponding locking male heads 9 (metal material with retaining rings) are evenly distributed at the corresponding positions on the other side of the module; the locking strap 8 passes through the locking male head 9 and then folds in the opposite direction, adhering to itself through the Velcro 11 to achieve module splicing. After splicing, the sealing insulation tape 10 (30mm wide double-sided Velcro 11, with the rough side fixed to one side of the outer protective layer 7 and the hook side adhering to the detachable Velcro 11 of the other side of the outer protective layer 7) further seals the seam.

[0033] Specifically, the outer side of the insulation sleeve body 1 is fixed to the outer wall of the pipe by two fireproof Velcro straps 11 (temperature resistance ≥300℃, hook and loop width 40mm) which serve as connectors 3, to prevent the insulation sleeve from sliding along the pipe axis.

[0034] Specifically, the inner side of the insulation unit module 2 is molded into an arc-shaped surface that matches the outer diameter of the pipe (Φ200mm) and the bending radius of the heat tracing cable (R=150mm) through a molding process, ensuring a tight fit with the wrapped object without any cavities.

[0035] Specifically, the insulation jacket body 1 is provided with radial tightening mechanisms 12 at both ends, and tightening straps are used to tighten both ends. The openings at both ends of the insulation jacket are sealed by adjusting the binding of the tightening straps.

[0036] Specifically, a reserved hole 13 with a diameter of 80mm is opened on one side of the insulation sleeve body 1 at the position corresponding to the pipe interface. An insulation cover 14 (made of the same material as the outer protective layer 7) is connected to the reserved hole 13 by a hinge. When closed, it is fixed to the insulation sleeve body 1 by a snap button. When opened, the pipe interface can be operated by unfastening the snap button.

[0037] Working principle

[0038] 1. Heat barrier mechanism: The heat of the medium in the pipeline is transferred to the main insulation layer 5 through the inner lining layer 4. The main insulation layer 5 greatly reduces heat conduction loss through the low thermal conductivity ceramic fiber felt. The aluminum foil surface of the reflective layer 6 reflects heat radiation, reducing the heat loss to the outside in the form of infrared rays. The silicone-coated fiberglass cloth of the outer protective layer 7 serves as the outermost layer, blocking the intrusion of external moisture and dust, while its high temperature resistance ensures long-term performance.

[0039] 2. Modular splicing and fixing: Multiple insulation unit modules 2 are quickly spliced ​​together by locking straps 8 and locking male heads 9 to form a cylindrical structure to wrap the pipe; sealing insulation tape 10 covers the splicing seam to eliminate the thermal bridging effect; the connector 3 uses fireproof Velcro 11 to fix the insulation sleeve body 1 to the outer wall of the pipe to prevent axial sliding and ensure that the insulation layer is in close contact with the wrapped object.

[0040] 3. Radial sealing and convenient operation: The elastic sealing ring is tightened by adjusting the buckle to seal the openings at both ends of the insulation sleeve, preventing heat loss from the ends; the design of the reserved hole 13 and the insulation cover 14 allows operation on pipe joints and other parts. After operation, the insulation cover 14 is closed and fixed with snaps to restore the integrity of the insulation sleeve and reduce heat loss.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A detachable insulation sleeve for asphalt pipeline heat tracing, comprising an insulation sleeve body (1), characterized in that: The insulation sleeve body (1) is formed by detachably splicing at least two insulation unit modules (2) through a quick locking mechanism to form a cylindrical structure that wraps around the pipe; The insulation unit module (2) includes, from the inside out, an inner lining layer (4), a main insulation layer (5), a reflective layer (6), and an outer protective layer (7); The quick-locking mechanism is located on the two longitudinal splicing edges of the insulation sleeve body (1) and includes a locking strap (8) on one side and multiple locking male heads (9) on the other side. The outer side of the insulation sleeve body (1) is fastened by multiple connectors (3).

2. The detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The quick-locking mechanism also includes a sealing and heat-insulating strip (10) covering the locking point. One side of the sealing and heat-insulating strip (10) is fixedly connected to the outer protective layer (7) of one heat-insulating unit module (2), and the other side is detachably connected to the outer protective layer (7) of another heat-insulating unit module (2) by Velcro (11) or snap fastener.

3. The detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The inner lining layer (4) is a high-temperature resistant fiber cloth, the main insulation layer (5) is a ceramic fiber felt or glass wool felt, the reflective layer (6) is an aluminum foil or stainless steel foil, and the outer protective layer (7) is a silicone-coated glass fiber cloth or a fluororubber-coated glass fiber cloth.

4. The detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The connector (3) is either a high-temperature resistant fireproof hook and loop fastener (11) or a strap.

5. A detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The inner shape of the insulation unit module (2) is adapted to the shape of the pipe and its heat tracing element that it is wrapped.

6. A detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The end of the insulation sleeve body (1) is provided with an adjustable radial tightening mechanism (12), which is a tightening band or an elastic closing ring.

7. A detachable insulation sleeve for asphalt pipeline heat tracing according to claim 1, characterized in that: The insulation sleeve body (1) has a reserved hole (13) for exposing pipe interfaces, instruments or valves, and an openable insulation cover (14) is provided at the reserved hole (13).

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