Polyurethane thermal insulation pipe with sealing connection mechanism

Abstract

The utility model discloses a polyurethane thermal insulation pipe with a sealing connection mechanism, which relates to the technical field of polyurethane thermal insulation pipes and comprises a polyurethane thermal insulation pipe, an inner extension connecting pipe is fixedly connected to the inner side of the polyurethane thermal insulation pipe, and a connection locking groove is formed in the outer side of the inner extension connecting pipe. A spring fixing groove is formed in the inner wall of the polyurethane thermal insulation pipe; according to the utility model, the locking top block, the connecting locking groove and the supporting spring are matched, so that the polyurethane thermal insulation pipe can be simply, conveniently and quickly connected and disassembled, and the installation efficiency and flexibility of a pipeline system are obviously improved. Meanwhile, the internal threaded sleeve is in threaded connection with the first external fixing ring, and structures such as a long fixing screw rod and a locking threaded hole are combined, so that extra fixing force is provided for the pipeline, the stability and reliability of the whole structure are enhanced, in addition, the design further protects an internal connecting structure of the sleeve, and the situation that the connecting tightness is affected by sliding is prevented; and loss of heat in the polyurethane heat preservation pipe in the transmission process is reduced, and the heat preservation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyurethane heat preservation pipe technical field especially, it relates to a kind of polyurethane heat preservation pipe with sealing connecting mechanism. BACKGROUND

[0002] Polyurethane heat preservation pipe, as a kind of high-performance heat insulation pipeline system, it has shown incomparable advantage in multiple key fields, especially in municipal heating, building heating, petroleum chemical industry, energy transmission and so on widely play a vital role. This pipeline with its unique structure and material characteristics, become indispensable part in modern industry and civil facilities, especially in pursuit of efficient heat preservation and energy-saving effect pipeline system, more occupies the pivotal position, polyurethane heat preservation pipe is mainly composed of three-layer structure: inner tube, polyurethane insulation layer and outer protective layer. Inner tube is responsible for conveying fluid, whether it is hot water or steam medium, can flow smoothly in inner tube;Polyurethane insulation layer effectively insulates the heat exchange between the outside environment and the inner tube fluid with its excellent heat preservation performance, significantly reduces heat loss, so as to realize the energy saving and utilization efficiency improvement. Outer protective layer further enhances the mechanical strength of the pipeline, ensures the stable operation of the pipeline in complex environment;Polyurethane heat preservation pipe is especially suitable for pipeline system that needs to ensure efficient heat preservation and energy-saving effect, needs to maintain the sealing and stability of pipeline connection under different temperature conditions (such as hot water, steam pipeline, etc.)

[0003] Through search, prior art usually relies on multiple sets of screw rod and other fasteners to connect polyurethane heat preservation pipes, and in the process of long time use, screw rod and other fasteners are prone to poor sealing at connection site due to vibration, temperature change and other factors, which not only leads to medium leakage, but also causes temperature loss, affects the heat insulation effect of pipeline system, and since a large number of screw rods and other fasteners are used, not only the installation difficulty and time cost are increased, but also the subsequent maintenance work is inconvenient, therefore, a polyurethane heat preservation pipe with sealing connecting mechanism is provided to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem raised in the above background art, provide a kind of polyurethane heat preservation pipe with sealing connecting mechanism, it has multiple reinforcement structure at heat preservation pipe connection place, and it has the advantages of good stability and convenient and quick pipeline connection installation, solve the problem raised in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: A polyurethane heat preservation pipe with sealing connecting mechanism, include: Polyurethane heat preservation pipe, the inside fixed connection of polyurethane heat preservation pipe has the inner extension connecting pipe, the outside of inner extension connecting pipe is provided with the connecting locking groove, the inner wall of polyurethane heat preservation pipe is provided with spring fixed groove, the inside of each group spring fixed groove is provided with two groups of lift rod sliding groove that passes to the outside of polyurethane heat preservation pipe, the inside fixed connection of each group spring fixed groove has a group of support spring, the other end fixed connection of support spring has locking top block, the side fixed connection of the support spring of each group locking top block has upper sliding handle.

[0006] As a further scheme of the utility model: The outer side of the polyurethane heat preservation pipe is fixedly connected with a first outer fixing ring, the outer side of the first outer fixing ring is provided with an internally threaded sleeve, the side of the internally threaded sleeve is provided with a locking threaded hole, the outer side of the polyurethane heat preservation pipe is fixedly connected with a second outer fixing ring, the inner side of the second outer fixing ring is provided with a screw rod fixing through hole that penetrates the second outer fixing ring, and the side of the screw rod fixing through hole is provided with a long fixed screw rod.

[0007] As a further scheme of the utility model: The outer side of the inner extension connecting pipe is sleeved with a sealing soft rubber sheet matched with the size of the polyurethane heat preservation pipe.

[0008] As a further scheme of the utility model: The polyurethane heat preservation pipe comprises three layers, the outermost layer is a high-density polyethylene sleeve pipe, the middle layer is a hard polyurethane foam plastic, and the innermost layer is a working steel pipe.

[0009] As a further scheme of the utility model: The locking top block is matched with the connecting locking groove.

[0010] As a further scheme of the utility model: The upper sliding handle is slidably connected to the inside of the lift rod sliding groove.

[0011] As a further scheme of the utility model: When the support spring is not subjected to external force and naturally elongated, part of the locking top block is located inside the spring fixed groove, and the other part of the locking top block is clamped with the connecting locking groove.

[0012] As a further scheme of the utility model: The outer side of the first outer fixing ring is provided with external threads, the inner side of the internally threaded sleeve is provided with internal threads, and the first outer fixing ring is threadedly connected with the internally threaded sleeve.

[0013] As a further scheme of the utility model: The long fixed screw rod is matched with the locking threaded hole, and the long fixed screw rod is threadedly connected with the locking threaded hole by penetrating the screw rod fixing through hole.

[0014] As a further scheme of the utility model: the end of the inner extension connecting pipe outside the polyurethane heat preservation pipe is provided with an arc chamfer, when the inner extension connecting pipe abuts against the locking top block, the locking top block can be extruded into the return spring fixing groove.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The beneficial effect of the utility model is embodied in the connection mode of the polyurethane heat preservation pipe. Through the precise cooperation of the locking top block and the connecting locking groove, and the clever spring force of the supporting spring, the utility model realizes the seamless and tight connection between the polyurethane heat preservation pipes. This connection mode discards the traditional complicated installation steps, and can be completed only by simple butt joint assembly, greatly simplifies the operation process, reduces the installation difficulty, and at the same time, the connection mode also has the ability of quick disassembly and reinstallation, so that the maintenance and upgrading of the pipeline system become more convenient, thereby significantly improving the installation efficiency and flexibility of the pipeline system. This innovative design not only improves the work efficiency, but also reduces the labor cost, and lays a solid foundation for the application and promotion of the polyurethane heat preservation pipe.

[0017] 2. The utility model also has outstanding beneficial effects in structural reinforcement. Through the close threaded connection of the inner thread sleeve and the first outer fixed ring, and the stable cooperation of the long fixed screw and the locking threaded hole and other structures, the utility model provides additional fixing force for the polyurethane heat preservation pipe, so that the stability and reliability of the overall structure are significantly improved, and more importantly, this multiple reinforcement design also cleverly protects the connection structure such as the upper sliding handle inside the inner thread sleeve, effectively preventing the connection tightness from being reduced due to sliding. This design not only enhances the anti-external force ability of the polyurethane heat preservation pipe, but also prolongs its service life, ensures the stability and safety of the polyurethane heat preservation pipe during long-term use. Moreover, this design also optimizes the sealing performance of the polyurethane heat preservation pipe, reduces the heat loss during the heat transmission in the polyurethane heat preservation pipe, and further improves the heat preservation effect of the polyurethane heat preservation pipe. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic view of the utility model;

[0019] Figure 2 is the structure schematic view of the sealing soft rubber sheet in the utility model;

[0020] Figure 3 is the structure schematic view of the connecting locking groove in the utility model;

[0021] Figure 4 is the structure schematic view of the lifting rod sliding groove in the utility model;

[0022] Figure 5 is the structural diagram of the spring fixing groove in the utility model.

[0023] In the figure: 1, polyurethane heat preservation pipe; 2, inner extension connecting pipe; 3, connecting locking groove; 4, first outer fixing ring; 5, inner threaded sleeve; 6, locking threaded hole; 7, second outer fixing ring; 8, screw rod fixing through hole; 9, long fixed screw rod; 10, spring fixing groove; 11, lifting rod sliding groove; 12, supporting spring; 13, locking top block; 14, upper sliding lifting handle; 15, sealing soft rubber sheet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] In the description of the utility model, it should be explained that the directions or position relations indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the utility model.

[0026] Referring to Figures 1 to 5The utility model discloses an embodiment of a polyurethane heat -preserving pipe with sealing connecting mechanism, including: polyurethane heat -preserving pipe 1, the inner side fixed connection of polyurethane heat -preserving pipe 1 has the inner extension connecting pipe 2, the outer side of inner extension connecting pipe 2 is established with the connection locking groove 3, and the inner wall of polyurethane heat -preserving pipe 1 is established with spring fixed groove 10, and the inner side of every group spring fixed groove 10 is established with two groups of lift rod sliding groove 11 that penetrate to the outer side of polyurethane heat -preserving pipe 1, and the inner side fixed connection of every group spring fixed groove 10 has a group of support spring 12, and the other end fixed connection of support spring 12 has locking top block 13, and the side fixed connection of every group locking top block 13 fixed with support spring 12 has upper sliding handle 14, through the elastic force effect of support spring 12, make locking top block 13 card into connection locking groove 3, realize the close connection between polyurethane heat -preserving pipe 1, can effectively reduce the heat leakage problem between polyurethane heat -preserving pipe 1 because of not close connection, improve the heat -preserving effect of polyurethane heat -preserving pipe 1, the upper sliding handle 14 is convenient for manual operation, adjusts the position of locking top block 13, to facilitate connection or disassembly,

[0027] The outer side of polyurethane heat -preserving pipe 1 is fixedly connected with a first outer fixed ring 4, the outer side of the first outer fixed ring 4 is provided with an internally threaded sleeve 5, the side of the internally threaded sleeve 5 is provided with a locking threaded hole 6, the outer side of the polyurethane heat -preserving pipe 1 is fixedly connected with a second outer fixed ring 7, the inner side of the second outer fixed ring 7 is provided with a screw rod fixed through hole 8, the side of the screw rod fixed through hole 8 is provided with a long fixed screw rod 9, the internally threaded sleeve 5 is threadedly connected with the first outer fixed ring 4, and after the locking top block 13 and the connection locking groove 3 are fixed, the connection part of the polyurethane heat -preserving pipe 1 can be further reinforced, the long fixed screw rod 9 is threadedly connected with the locking threaded hole 6 through the screw rod fixed through hole 8, additional fixing force is provided, and the stability and the sealing performance of the structure are enhanced.

[0028] The outer side of the inner extension connecting pipe 2 is sleeved with a sealing soft rubber sheet 15 matched with the size of the polyurethane heat -preserving pipe 1, when the two groups of polyurethane heat -preserving pipes 1 are butted against each other, the sealing performance can be improved at the joint, the sealing soft rubber sheet 15 serves as an additional sealing layer, when the polyurethane heat -preserving pipes 1 are butted against each other, small gaps at the joint are filled and sealed, medium leakage is prevented, and the overall sealing performance is improved; in addition, the sealing soft rubber sheet 15 serves as an additional sealing layer, heat loss caused by small gaps at the joint of the two groups of polyurethane heat -preserving pipes 1 can be effectively avoided, the sealing performance between the polyurethane heat -preserving pipes 1 is enhanced, heat leakage at the pipe connection part is further reduced, heat can be better maintained in the polyurethane heat -preserving pipes 1, heat loss is effectively reduced, and the heat -preserving effect of the polyurethane heat -preserving pipes 1 is further optimized.

[0029] The polyurethane heat preservation pipe 1 internally comprises three layers, the outermost layer is a high-density polyethylene sleeve pipe, the middle layer is rigid polyurethane foam plastic, and the innermost layer is a working steel pipe; the high-density polyethylene sleeve pipe provides corrosion and mechanical protection, the rigid polyurethane foam plastic provides excellent heat insulation performance, and the working steel pipe serves as a pipeline for conveying medium, and the three are combined to form a pipeline system with high heat preservation and corrosion resistance;

[0030] The locking top block 13 is matched with the connecting locking groove 3, the shape and size of the locking top block 13 are matched with the connecting locking groove 3, the locking top block 13 can be accurately clamped into the connecting locking groove 3, and a stable connecting structure is formed; the upper sliding handle 14 is slidably connected to the inside of the lifting rod sliding groove 11, the upper sliding handle 14 slides in the lifting rod sliding groove 11, manual operation of a user is allowed to move the locking top block 13, and the polyurethane heat preservation pipe 1 is unlocked or locked;

[0031] When the supporting spring 12 is naturally elongated without external force, the locking top block 13 is partially located inside the spring fixing groove 10, and the other part of the locking top block 13 is clamped with the connecting locking groove 3; the elastic force of the supporting spring 12 keeps a part of the locking top block 13 in the clamped state, and the other part of the locking top block 13 is left in the spring fixing groove 10 to ensure the stability and reliability of the connection;

[0032] The first outer fixing ring 4 is provided with external threads on the outside, the inner threaded sleeve 5 is provided with internal threads on the inside, and the first outer fixing ring 4 is threadedly connected with the inner threaded sleeve 5; the connecting structure such as the upper sliding handle 14 in the inner threaded sleeve 5 can be protected, and the sliding of the connecting structure is prevented from affecting the connection tightness; the setting mode can effectively avoid the small gap caused by loosening of the connecting part, reduce the heat leakage of the medium flowing in the polyurethane heat preservation pipe 1 at the pipeline connecting part, further improve the heat insulation effect of the polyurethane heat preservation pipe 1, and optimize the heat preservation performance of the polyurethane heat preservation pipe 1;

[0033] The long fixed screw rod 9 is matched with the locking threaded hole 6, the long fixed screw rod 9 is threadedly connected with the locking threaded hole 6 through the screw rod fixed through hole 8, and the long fixed screw rod 9 is threadedly matched with the locking threaded hole 6, so that additional fixing force is provided, and the connection between the polyurethane heat preservation pipes 1 is more firm;

[0034] The end of the inner extension connecting pipe 2 extending out of the polyurethane heat preservation pipe 1 is provided with an arc chamfer, and when the inner extension connecting pipe 2 abuts against the locking top block 13, the locking top block 13 can be extruded back into the spring fixing groove 10.

[0035] The working principle of the utility model is as follows: when two groups of heat preservation pipes need to be connected, first, the inner extension connecting pipe 2 of one group of heat preservation pipes is butted against the inner wall of the polyurethane heat preservation pipe 1 of another group of heat preservation pipes;

[0036] At this time, the inner extension connecting pipe 2 will squeeze the locking top block 13, and the support spring 12 will retract until it is completely retracted into the spring fixing groove 10. When the two sets of polyurethane insulation pipes 1 are fully connected, the support spring 12 will reset, and the locking top block 13 will pop out of the spring fixing groove 10 again and be inserted into the connection locking groove 3, so as to achieve the initial tight connection between the polyurethane insulation pipes 1. During the connection process, the sealing soft rubber sheet 15 will fill and seal the tiny gap at the interface to prevent medium leakage and heat loss, which is conducive to the maintenance of heat energy in the polyurethane insulation pipe 1.

[0037] After the locking top block 13 is fixed to the connecting locking groove 3, the internal thread sleeve 5 is rotated and threaded to the outside of the first outer fixing ring 4, and continues to rotate until it abuts against the second outer fixing ring 7 of the other set of insulation pipes. At this time, the long fixing screw 9 can pass through the screw fixing through hole 8 and the locking thread hole 6 to make a threaded connection, providing additional fixing force and further enhancing the stability and sealing of the structure. This design can protect the internal connection structure such as the sliding handle 14 inside the internal thread sleeve 5, preventing it from sliding and affecting the tightness of the connection, further improving the overall sealing of the polyurethane insulation pipe 1, reducing the heat loss of the medium flowing inside the polyurethane insulation pipe 1, thereby further improving the insulation effect of the polyurethane insulation pipe 1 and achieving the purpose of energy saving.

[0038] This completes the sealing connection between all the insulation pipes.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A polyurethane insulated pipe having a sealed connection mechanism, characterized in that, Include: Polyurethane heat preservation pipe (1), the inner side of the polyurethane heat preservation pipe (1) is fixedly connected with an inner extension connecting pipe (2), the outer side of the inner extension connecting pipe (2) is provided with a connecting locking groove (3), the inner wall of the polyurethane heat preservation pipe (1) is provided with a spring fixing groove (10), the inner side of each group of spring fixing grooves (10) is provided with two groups of lifting rod sliding grooves (11) penetrating to the outer side of the polyurethane heat preservation pipe (1), one side of the supporting spring (12) fixed with each group of locking top blocks (13) is fixedly connected with an upper sliding handle (14).

2. The polyurethane insulated pipe having a sealing connection mechanism according to claim 1, wherein, The outer side of the polyurethane heat preservation pipe (1) is fixedly connected with a first outer fixed ring (4), the outer side of the first outer fixed ring (4) is provided with an inner threaded sleeve (5), the side of the inner threaded sleeve (5) is provided with a locking threaded hole (6), the outer side of the polyurethane heat preservation pipe (1) is fixedly connected with a second outer fixed ring (7), the inner side of the second outer fixed ring (7) is provided with a screw rod fixing through hole (8) penetrating therethrough, and the side of the screw rod fixing through hole (8) is provided with a long fixed screw rod (9).

3. The polyurethane insulated pipe having a sealed connection mechanism according to claim 1, wherein, The outer side of the inner extension connecting pipe (2) is sleeved with a sealing soft rubber sheet (15) matching the size of the polyurethane heat preservation pipe (1).

4. The polyurethane insulated pipe having a sealed connection mechanism according to claim 1, wherein, The polyurethane heat preservation pipe (1) comprises three layers, the outermost layer is a high-density polyethylene sleeve pipe, the middle layer is a hard polyurethane foam plastic, and the innermost layer is a working steel pipe.

5. The polyurethane insulated pipe having a sealed connection mechanism according to claim 1, wherein, The locking top block (13) is matched with the connecting locking groove (3).

6. The polyurethane insulated pipe having a sealed connection mechanism according to claim 1, wherein, The upper sliding handle (14) is slidingly connected inside the lifting rod sliding groove (11).

7. The polyurethane insulated pipe having a sealed connection mechanism according to claim 1, wherein, When the supporting spring (12) is naturally elongated without external force, part of the locking top block (13) is located inside the spring fixing groove (10), and the other part of the locking top block (13) is clamped with the connecting locking groove (3).

8. The polyurethane insulated pipe having a sealed connection mechanism according to claim 2, wherein, The outer side of the first outer fixed ring (4) is provided with external threads, the inner side of the inner threaded sleeve (5) is provided with internal threads, and the first outer fixed ring (4) is threadedly connected with the inner threaded sleeve (5).

9. The polyurethane insulated pipe having a sealed connection mechanism according to claim 2, wherein, The long fixed screw rod (9) is matched with the locking threaded hole (6), the long fixed screw rod (9) penetrates the screw rod fixing through hole (8) and is threadedly connected with the locking threaded hole (6).

10. The polyurethane insulated pipe having a sealed connection mechanism of claim 2, wherein, The end of the inner extension connecting pipe (2) extending outside the polyurethane heat preservation pipe (1) is provided with an arc chamfer, when the inner extension connecting pipe (2) abuts against the locking top block (13), the locking top block (13) can be extruded back into the spring fixing groove (10).

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