Hard polyurethane foam plastic prefabricated thermal insulation pipe

Abstract

The utility model relates to the technical field of rigid polyurethane thermal insulation pipes, in particular to a rigid polyurethane foam plastic prefabricated thermal insulation pipe which comprises a steel pipe, a thermal insulation layer, a protective layer and a connecting mechanism, the connecting mechanism comprises a connecting cylinder, a plurality of clamping blocks and a fixing assembly, the connecting cylinder is provided with a plurality of clamping grooves, and the thermal insulation layer is fixedly connected with the outer side wall of the steel pipe. The protective layer is fixedly connected with the outer side wall of the heat preservation layer, the heat preservation layer is located between the steel pipe and the protective layer, the connecting cylinder is fixedly connected with one end of the steel pipe, the multiple clamping blocks are fixedly connected with the other end of the steel pipe, the multiple clamping blocks are in sliding connection with the connecting cylinder and extend into the multiple clamping grooves correspondingly, and the fixing assembly is arranged on the protective layer. According to the heat preservation pipe, the two heat preservation pipes are aligned and connected through the connecting mechanism, the connecting mode is simple, re-dismounting and re-mounting are easy, maintenance and detection are convenient, and then the practicability of the heat preservation pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hard polyurethane heat preservation pipe technical field especially relates to a kind of hard polyurethane foam plastic prefabricated heat preservation pipe. BACKGROUND

[0002] Hard polyurethane foam plastic prefabricated heat preservation pipe is a kind of efficient heat preservation pipeline.Current heat preservation pipe includes working steel pipe, rigid polyurethane foam insulation layer and high-density polyethylene plastic outer protective layer;Polyurethane foam plastic insulation layer has the shortcoming of not resistant to high temperature, when medium temperature is greater than 120 DEG C, polyurethane insulation material is under the action of high temperature environment for a long time, will accelerate aging, deformation, heat preservation effect is greatly reduced, insulation layer directly uses polyurethane insulation material is not suitable.

[0003] In the prior art patent application with the publication number CN202937892U discloses composite buried heat preservation pipe, heat preservation layer uses composite heat preservation layer structure first layer heat preservation first uses aluminium silicate heat preservation material, calculates effective thermal resistance thickness, reduces the outer surface temperature of working steel pipe to the allowable temperature of polyurethane insulation material (less than 120 DEG C), avoids the shortcoming that polyurethane material deforms when greater than 120 DEG C, failure;Second layer uses rigid polyurethane foam plastic pipe shell, pipe shell and aluminium silicate material are connected using adhesive, the joint between pipe shell is filled with foaming material, smoothes, the structure of two layers of heat preservation material increases the practicability of protection pipe.

[0004] But in prior art, the connection of heat preservation pipe is through heating to make sleeve shrink, tightly wrap around connecting part, to realize sealing and connection, this kind of connection mode is more troublesome, and inconveniently heat preservation pipe is re-detached, lead to the practicability of this kind of connection mode is lower. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hard polyurethane foam plastic prefabricated heat preservation pipe, to solve the problem in prior art, the connection of heat preservation pipe is through heating to make sleeve shrink, tightly wrap around connecting part, to realize sealing and connection, this kind of connection mode is more troublesome, and inconveniently heat preservation pipe is re-detached, lead to the practicability of this kind of connection mode is lower.

[0006] In order to achieve the above object, the utility model provides a kind of hard polyurethane foam plastic prefabricated thermal insulation pipe, including steel pipe, thermal insulation layer, protective layer and connecting mechanism, the connecting mechanism includes connecting cylinder, multiple clamping blocks and fixed component, the connecting cylinder has multiple clamping slots, the thermal insulation layer is fixedly connected with the outside wall of steel pipe, the protective layer is fixedly connected with the outside wall of thermal insulation layer, the thermal insulation layer is located between the steel pipe and the protective layer, the connecting cylinder is fixedly connected with one end of the steel pipe, multiple clamping blocks are fixedly connected with the other end of the steel pipe, multiple clamping blocks are slidably connected with the connecting cylinder, and extend into multiple clamping slots respectively, and the fixed component is arranged on the protective layer.

[0007] Among them, the connecting mechanism further includes a clamping ring, the clamping ring is fixedly connected with the connecting cylinder and located on the inner side wall of the connecting cylinder, and the clamping ring is slidably connected with multiple clamping blocks and located in multiple clamping blocks.

[0008] Among them, the fixed component includes a threaded cylinder and two external threads, and the two external threads are arranged at two ends of the protective layer respectively, and the threaded cylinder is threadedly connected with the protective layer through the external threads.

[0009] Among them, the fixed component further includes a limiting ring, the limiting ring is fixedly connected with the protective layer and located at one end of the protective layer.

[0010] Among them, the hard polyurethane foam plastic prefabricated thermal insulation pipe further includes an anti-skid layer, and the anti-skid layer is fixedly connected with the outer side wall of the protective layer.

[0011] The hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model, when connecting two thermal insulation pipes, aligning two steel pipes, aligning multiple clamping blocks with multiple clamping slots respectively, inserting multiple clamping blocks into multiple clamping slots respectively, connecting two steel pipes, connecting two thermal insulation layers of two thermal insulation pipes through the fixed component, and completing splicing of two thermal insulation pipes, when the steel pipe needs to be maintained and inspected, two thermal insulation pipes can be easily disassembled, two thermal insulation pipes can be easily installed and disassembled through the foregoing mode, and the practicability of the thermal insulation pipe is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows.

[0013] Figure 1 It is the structure schematic view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model.

[0014] Figure 2It is another direction structure schematic view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model.

[0015] Figure 3 It is the front view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model.

[0016] Figure 4 It is the sectional view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model.

[0017] 101-steel pipe, 102-insulation layer, 103-protection layer, 104-clamping block, 105-connection cylinder, 106-clamping groove, 107-clamping ring, 108-external thread, 109-thread cylinder, 110-limiting ring, 111-anti-skid layer. Specific implementation

[0018] Please refer to Figures 1 to 4 Among them, Figure 1 It is the structure schematic view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model, Figure 2 It is another direction structure schematic view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model, Figure 3 It is the front view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model, Figure 4 It is the sectional view of the hard polyurethane foam plastic prefabricated thermal insulation pipe of the utility model.

[0019] The utility model provides a kind of hard polyurethane foam plastic prefabricated thermal insulation pipe, including steel pipe 101, insulation layer 102, anti-skid layer 111, protection layer 103 and connecting mechanism, the connecting mechanism includes connection cylinder 105, clamping ring 107, multiple clamping blocks 104 and fixed assembly, the connection cylinder 105 has multiple clamping grooves 106, the fixed assembly includes limiting ring 110, thread cylinder 109 and two external threads 108, by the foregoing scheme, it is solved in the prior art, the connection of thermal insulation pipe is shrunk by heating, tightly wraps around connecting part, to realize sealing and connection, this kind of connection mode is more troublesome, and it is inconvenient to reassemble thermal insulation pipe, leading to the practicability of this kind of connection mode is lower.

[0020] In the embodiment, the heat preservation layer 102 is fixedly connected with the outer side wall of the steel pipe 101, the protective layer 103 is fixedly connected with the outer side wall of the heat preservation layer 102, the heat preservation layer 102 is located between the steel pipe 101 and the protective layer 103, the connecting barrel 105 is fixedly connected with one end of the steel pipe 101, a plurality of the clamping blocks 104 are fixedly connected with the other end of the steel pipe 101, a plurality of the clamping blocks 104 are slidably connected with the connecting barrel 105 and respectively extend into a plurality of the clamping grooves 106, and the fixing assembly is arranged on the protective layer 103. When connecting two heat preservation pipes, the two steel pipes 101 are aligned, a plurality of the clamping blocks 104 are respectively aligned with a plurality of the clamping grooves 106, a plurality of the clamping blocks 104 are respectively inserted into a plurality of the clamping grooves 106, the two steel pipes 101 are connected, the two heat preservation layers 102 of the two heat preservation pipes are connected through the fixing assembly, and the two heat preservation pipes are easily disassembled when the steel pipe 101 needs to be maintained and inspected. Through the foregoing mode, the two heat preservation pipes can be easily assembled and disassembled, and the practicability of the heat preservation pipe is improved.

[0021] Further, the clamping ring 107 is fixedly connected with the connecting barrel 105 and located on the inner side wall of the connecting barrel 105, and the clamping ring 107 is slidably connected with a plurality of the clamping blocks 104 and located in a plurality of the clamping blocks 104.

[0022] In the embodiment, when connecting two heat preservation pipes, the two steel pipes 101 are aligned, a plurality of the clamping blocks 104 are respectively aligned with a plurality of the clamping grooves 106, a plurality of the clamping blocks 104 are respectively inserted into a plurality of the clamping grooves 106, the two steel pipes 101 are connected, and the gap between a plurality of the clamping blocks 104 and a plurality of the clamping grooves 106 is sealed by the clamping ring 107, so that the air tightness of the connection of the steel pipe 101 is not affected.

[0023] Further, two external threads 108 are respectively arranged at two ends of the protective layer 103, and the threaded barrel 109 is threadedly connected with the protective layer 103 through the external threads 108.

[0024] Further, the limiting ring 110 is fixedly connected with the protective layer 103 and located at one end of the protective layer 103.

[0025] In the embodiment, when connecting two heat preservation pipes, the two steel pipes 101 are aligned, the plurality of clamping blocks 104 are aligned with the plurality of clamping grooves 106 respectively, the plurality of clamping blocks 104 are inserted into the plurality of clamping grooves 106 respectively, the two steel pipes 101 are connected, the gap between the plurality of clamping blocks 104 and the plurality of clamping grooves 106 is sealed by the clamping ring 107, the air tightness of the connection of the steel pipe 101 is ensured not to be affected, the threaded cylinder 109 is rotated, the threaded cylinder 109 moves on the external thread 108, until one end of the threaded cylinder 109 on one protective layer 103 moves to another protective layer 103, and the threaded cylinder 109 is attached to the limiting ring 110 on another heat preservation pipe, the gap between the two protective layers 103 is filled by the threaded cylinder 109, the heat is ensured not to flow out from the gap between the two heat preservation layers 102, and the heat preservation property of the heat preservation pipe is improved.

[0026] Further, the anti-skid layer 111 is fixedly connected to the outer side wall of the protective layer 103.

[0027] In the embodiment, the anti-skid layer 111 is arranged on the outer side wall of the protective layer 103, which is beneficial to the operation of the operator to control the heat preservation pipe and reduce the sliding phenomenon of the heat preservation pipe, so as to facilitate the operator to abut and install the heat preservation pipe, and the practicability of the heat preservation pipe is improved.

[0028] When connecting two heat preservation pipes, the two steel pipes 101 are aligned, the plurality of clamping blocks 104 are aligned with the plurality of clamping grooves 106 respectively, the plurality of clamping blocks 104 are inserted into the plurality of clamping grooves 106 respectively, the two steel pipes 101 are connected, the gap between the plurality of clamping blocks 104 and the plurality of clamping grooves 106 is sealed by the clamping ring 107, the air tightness of the connection of the steel pipe 101 is ensured not to be affected, the threaded cylinder 109 is rotated, the threaded cylinder 109 moves on the external thread 108, until one end of the threaded cylinder 109 on one protective layer 103 moves to another protective layer 103, and the threaded cylinder 109 is attached to the limiting ring 110 on another heat preservation pipe, the gap between the two protective layers 103 is filled by the threaded cylinder 109, the heat is ensured not to flow out from the gap between the two heat preservation layers 102, and the heat preservation property of the heat preservation pipe is improved.

[0029] The above-described is only a preferred embodiment of the present application, and cannot be used to limit the scope of the present application. Those skilled in the art can understand that all or part of the processes described above can be implemented, and equivalent changes made to the claims of the present application, still fall within the scope of the present application.

Claims

1. A rigid polyurethane foam prefabricated insulated pipe, comprising a steel pipe, an insulation layer, and a protective layer, wherein the insulation layer is fixedly connected to the outer wall of the steel pipe, the protective layer is fixedly connected to the outer wall of the insulation layer, and the insulation layer is located between the steel pipe and the protective layer, characterized in that, It also includes a connecting mechanism, which includes a connecting cylinder, multiple locking blocks and a fixing component. The connecting cylinder has multiple locking slots. The connecting cylinder is fixedly connected to one end of the steel pipe. The multiple locking blocks are fixedly connected to the other end of the steel pipe. The multiple locking blocks are slidably connected to the connecting cylinder and extend into the multiple locking slots respectively. The fixing component is disposed on the protective layer.

2. The rigid polyurethane foam pre-insulated pipe as described in claim 1, characterized in that, The connecting mechanism further includes a retaining ring, which is fixedly connected to the connecting cylinder and located on the inner side wall of the connecting cylinder. The retaining ring is slidably connected to a plurality of the retaining blocks and is located within the plurality of the retaining blocks.

3. The rigid polyurethane foam pre-insulated pipe as described in claim 2, characterized in that, The fixing component includes a threaded cylinder and two external threads, which are respectively disposed at both ends of the protective layer. The threaded cylinder is threadedly connected to the protective layer through the external threads.

4. The rigid polyurethane foam pre-insulated pipe as described in claim 3, characterized in that, The fixing component also includes a limiting ring, which is fixedly connected to the protective layer and located at one end of the protective layer.

5. The rigid polyurethane foam pre-insulated pipe as described in claim 4, characterized in that, The rigid polyurethane foam prefabricated insulation pipe also includes an anti-slip layer, which is fixedly connected to the outer wall of the protective layer.

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