An assembled prefabricated polyurethane thermal insulation sleeve
Patent Information
- Application Number
- CN202522527381.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0003]本实用新型要解决的技术问题是：传统蒸汽管道保温材料刚性不足、结构松散和环境适应性差
[0011](1)本实用新型的一种装配化预制成品聚氨酯保温套管通过将钢管、聚氨酯保温层、防潮阻隔层和外保护管之间的结构整合与材料优化，使得套管具备高刚性、抗变形、耐候性强的特点；
Smart Images
Figure CN224860328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steam pipeline technology, and in particular to a prefabricated polyurethane insulation sleeve. Background Technology
[0002] Traditional steam pipe insulation materials (such as centrifugal glass wool) typically employ a multi-layer wrapping and filling method with an outer aluminum protective layer. This method has the following problems: 1) Insufficient rigidity: Traditional glass wool sleeves and outer protective layers are easily deformed by external forces, leading to a decrease in insulation performance; 2) Loose structure: An additional outer protective layer (such as aluminum cladding, PVC, etc.) is required after installation, which is complex and costly; 3) Poor environmental adaptability: Long-term exposure to humid or high-temperature environments can easily cause delamination, peeling, or corrosion. Utility Model Content
[0003] The technical problem to be solved by this utility model is that traditional steam pipe insulation materials have insufficient rigidity, loose structure and poor environmental adaptability.
[0004] The technical solution adopted by this utility model to solve its technical problem is: an assembled prefabricated polyurethane insulation sleeve, including a steel pipe, a polyurethane insulation layer is sleeved on the outside of the steel pipe, a moisture-proof barrier layer is sleeved on the outside of the polyurethane insulation layer, an outer protective pipe is sleeved on the outside of the moisture-proof barrier layer, and pre-installed flanges are provided at both ends of the outer protective pipe.
[0005] The outer protective tube is provided with an end locking ring for installing a pre-installed flange.
[0006] The pre-assembled flange includes an annular flange, an integral end connecting pipe fixed to the connection end of the annular flange, and an external limiting ring located on the outside of the end connecting pipe.
[0007] The steel pipe end and the end connecting pipe are fixedly assembled by threads.
[0008] The annular flange has a plurality of circular grooves on its sidewall.
[0009] The circular groove on the side wall of the annular flange is provided with elastic positioning beads and pressure sensor modules at intervals.
[0010] The beneficial effects of this utility model are:
[0011] (1) The prefabricated polyurethane insulation sleeve of this utility model integrates the structure and optimizes the materials between the steel pipe, polyurethane insulation layer, moisture barrier layer and outer protective pipe, so that the sleeve has the characteristics of high rigidity, deformation resistance and strong weather resistance.
[0012] (2) By providing pre-installed flanges at both ends of the outer protective pipe, it can be quickly installed on site. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a partial structural diagram of the pre-installed flange end of this utility model. Detailed Implementation
[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Figure 1 and Figure 2 The prefabricated polyurethane insulation sleeve shown includes a steel pipe 1, a polyurethane insulation layer 2 on the outside of the steel pipe 1, a moisture-proof barrier layer 3 on the outside of the polyurethane insulation layer 2, an outer protective pipe 4 on the outside of the moisture-proof barrier layer 3, and pre-installed flanges 5 at both ends of the outer protective pipe 4.
[0019] Outer protective tube 4: Made of high-rigidity polyethylene, which improves compressive strength.
[0020] Polyurethane insulation layer 2: uniformly filled inside the outer protective tube 4, with a density ≥48kg / m³ 3 The fiber diameter is ≤6μm, and it is cured and molded by thermosetting adhesive, and is tightly attached to the inner wall of the outer protective tube 4.
[0021] Moisture-proof barrier layer 3: An aluminum foil composite film or nano-coating is added between the polyurethane insulation layer 2 and the outer protective pipe 4 to block water vapor penetration.
[0022] Pre-installed flange 5: Supports seamless splicing of multi-segment sleeves.
[0023] Integrated molding technology: The polyurethane insulation layer 2 and the outer protective pipe 4 are cured simultaneously through a factory molding process, and the moisture-proof barrier layer 3 is set on the inside to eliminate the risk of delamination.
[0024] Rigid reinforcement design: The corrugated outer protective tube works in synergy with high-density glass wool, with a compressive strength ≥150kPa and a radial deformation rate <2%.
[0025] The outer protective tube 4 is provided with an end locking ring 41 for installing the pre-installed flange 5.
[0026] The pre-installed flange 5 includes an annular flange 51, an integral end connecting pipe 52 fixed to the connection end of the annular flange 51, and an external limiting ring 53 located outside the end connecting pipe 52.
[0027] The end connecting pipe 52 is inserted into the inner side of the end of the outer protective pipe 4. It is locked by the end locking ring 41 and the outer limiting ring 53. An internal thread is opened at the end of the steel pipe 1. The internal thread is screwed into the end connecting pipe 52 through the external thread and fixed to the end of the steel pipe 1.
[0028] The steel pipe 1 is fixedly assembled with the end connecting pipe 52 by threads.
[0029] The annular flange 51 has a plurality of circular grooves 54 on its side wall.
[0030] The circular groove 54 on the side wall of the annular flange 51 is provided with elastic positioning beads 55 and pressure sensor modules 56 at intervals.
[0031] The elastic positioning bead 55 and the pressure sensor module 56 adopt a quick-release structure design, which can be quickly disassembled and assembled according to installation needs. When the annular flange 51 at the end is fixed by bolts, the elastic positioning bead 55 on the connecting surface of the annular flange 51 on the adjacent side is pressed against the pressure sensor module 56 on the connecting surface of the annular flange 51 on the other side. The assembly status is monitored by pressing the elastic positioning bead 55 against the outside of the pressure sensor module 56 according to the pressure value.
[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A prefabricated polyurethane insulation sleeve, comprising a steel pipe (1), characterized in that: The steel pipe (1) is fitted with a polyurethane insulation layer (2) on the outside, and a moisture-proof barrier layer (3) is fitted on the outside of the polyurethane insulation layer (2). An outer protective pipe (4) is fitted on the outside of the moisture-proof barrier layer (3), and pre-installed flanges (5) are provided at both ends of the outer protective pipe (4).
2. The prefabricated polyurethane insulation sleeve according to claim 1, characterized in that: The outer protective tube (4) is provided with an end locking ring (41) for installing the pre-installed flange (5).
3. The prefabricated polyurethane insulation sleeve according to claim 2, characterized in that: The pre-installed flange (5) includes an annular flange (51), an end connecting pipe (52) of an integral structure fixed to the connecting end of the annular flange (51), and an external limiting ring (53) located outside the end connecting pipe (52).
4. The prefabricated polyurethane insulation sleeve according to claim 1, characterized in that: The steel pipe (1) end and the end connecting pipe (52) are fixedly assembled by threads.
5. The prefabricated polyurethane insulation sleeve according to claim 3, characterized in that: The annular flange (51) has a plurality of circular grooves (54) on its side wall.
6. The prefabricated polyurethane insulation sleeve according to claim 5, characterized in that: The circular groove (54) on the side wall of the annular flange (51) is provided with elastic positioning beads (55) and pressure sensor modules (56) at intervals.