Heat-insulation and corrosion-resistant composite heat preservation pipe

Abstract

The utility model relates to the technical field of heat preservation pipes, in particular to a heat-insulation corrosion-resistant composite heat preservation pipe which comprises an outer layer pipe, sealing ring sleeves and a heat preservation inner pipe assembly, the heat preservation inner pipe assembly is arranged in the outer layer pipe, the sealing ring sleeves are inserted into the two ends of the heat preservation inner pipe assembly, and flanges are fixedly installed at the front end and the rear end of the outer layer pipe. When the heat insulation pipe is used, the annular cavity is arranged between the inner pipe and the heat insulation pipe, and the metal U-shaped ring piece is additionally arranged to serve as a connecting piece of the inner pipe and the heat insulation pipe to replace direct filling of heat insulation materials, so that the firmness degree of the pipeline is increased, and the heat transfer path stroke is increased; and medium heat in the inner pipe is directly transferred and lost through the outer side end face of the inner pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of thermal insulation pipe especially, relates to a heat -insulated corrosion -resisting composite thermal insulation pipe. BACKGROUND

[0002] With the rapid development of city, pipeline construction's laying is also more and more important, in order to prevent the outside environment to cause the influence to the medium in pipeline, often adopt thermal insulation pipe, thermal insulation pipe is the short name of heat insulation pipe, thermal insulation pipe is used for the delivery of liquid, gas and other medium, in petroleum, chemical industry, aerospace, hot spring, military, central heating, central air conditioning, municipal etc. Heat insulation engineering of pipeline, and the current thermal insulation pipe is filled with cladding structure cooperation corresponding heat insulation material and is compounded to reach corresponding heat insulation effect, but the cladding structure uses thermal insulation foam material, and the interlayer of thermal insulation pipe is not firm, can lead to the unstable structure of thermal insulation pipe, and the heat insulation material can gradually become ineffective when thermal insulation pipe is used for a long time, leading to the poor thermal insulation effect of thermal insulation pipe. SUMMARY

[0003] The skilled person provides a heat-insulated corrosion-resistant composite thermal insulation pipe to solve the problems raised in the background.

[0004] To solve the above technical problems, the utility model provides a heat-insulated corrosion-resistant composite thermal insulation pipe, which comprises an outer pipe, a sealing ring sleeve and a thermal insulation inner pipe assembly, the outer pipe is provided with the thermal insulation inner pipe assembly, the two ends of the thermal insulation inner pipe assembly are inserted with the sealing ring sleeve, and the front and rear ends of the outer pipe are fixedly installed with flanges.

[0005] The sealing ring sleeve comprises an arc-shaped filler, a connecting ring, a connecting bolt hole one, a connecting bolt hole two, an inner ring, a connecting bolt two, an inner corner ring, a sealing ring one, an outer corner ring and a sealing ring two, the flat end of the arc-shaped filler is fixedly installed with the connecting ring, a plurality of connecting bolt hole twos are fixedly arranged on the inner ring side of the connecting ring, the inner ring side of the connecting ring is provided with the inner ring, a plurality of connecting bolts two are arranged on the inner ring, an inner corner ring is connected to one inner ring, and an outer corner ring is connected to the other inner ring, the inner corner ring is an inner right-angled triangular ring, and the outer corner ring is an outer right-angled triangular ring.

[0006] The thermal insulation inner pipe assembly comprises an inner pipe, a heat insulation pipe, a U-shaped ring, a clamping groove and a clamping block, two symmetrical U-shaped rings are arranged in the annular cavity between the inner pipe and the heat insulation pipe, the inner concave ring mouth of the U-shaped ring is correspondingly arranged with the arc-shaped filler, the U-shaped ring is used as the connecting piece of the inner pipe and the heat insulation pipe, the heat transfer path stroke is increased, and the heat loss of the medium in the inner pipe through the outer side end surface of the inner pipe is reduced.

[0007] In a preferred embodiment: a plurality of flow guide strips are annularly and spacedly installed on the outer side of the outer pipe.

[0008] In a preferred embodiment: the flange is annularly provided with a plurality of connecting bolts one, the outer tube is connected and fixed with the sealing ring sleeve through the flange and the connecting bolts one, the connecting ring is provided with a plurality of connecting bolt holes one, and the connecting bolt holes one are correspondingly provided with the connecting bolts one.

[0009] In a preferred embodiment: the inclined surface of the inner corner ring is fixedly installed with a plurality of sealing rings one, and the inclined surface of the outer corner ring is fixedly installed with a plurality of sealing rings two.

[0010] In a preferred embodiment: the arc-shaped filler, the connecting ring, the inner ring, the inner corner ring, the sealing ring one, the outer corner ring and the sealing ring two are prepared from nitrile rubber (NBR) and polyvinyl chloride (PVC).

[0011] In a preferred embodiment: the inner tube and the heat insulation pipe are provided with a plurality of clamping grooves on the side close to the annular cavity one, and the inner and outer rings of the U-shaped ring are provided with a plurality of clamping blocks correspondingly inserted into the clamping grooves.

[0012] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0013] 1. When the utility model is used, the annular cavity is arranged between the inner tube and the heat insulation pipe, and the metal U-shaped ring is used as the connecting piece of the inner tube and the heat insulation pipe instead of directly filling the heat insulation material, so that the firmness of the pipeline is increased, the heat transfer path is increased, and the heat loss of the medium in the inner tube through the outer end surface of the inner tube is reduced.

[0014] 2. When the utility model is used, the arc-shaped filler and the connecting ring are used for heat preservation of the inner tube assembly and the outer tube, heat exchange between the two is reduced, the inner corner ring and the outer corner ring are used to form butt joint, and the sealing degree is increased by elastic deformation of the sealing ring one and the sealing ring two, so that the heat loss of the gap of the heat preservation pipe connection is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the structural schematic view provided by the application;

[0016] Fig. 2 is the structural schematic view of the arc-shaped filler and the inner corner ring provided by the application;

[0017] Fig. 3 is the structural schematic view of the outer corner ring provided by the application;

[0018] Fig. 4 is the structural schematic view of the heat preservation inner tube assembly provided by the application;

[0019] In the figure: 1, outer tube; 2, flow guide strip; 3, flange; 4, sealing ring sleeve; 5, connecting bolt one; 6, heat preservation inner tube assembly;

[0020] 41. Arc-shaped filler; 42. Connecting ring; 43. Connecting bolt hole one; 44. Connecting bolt hole two; 45. Inner ring; 46. Connecting bolt two; 47. Inner corner ring; 48. Sealing ring one; 49. Outer corner ring; 410. Sealing ring two;

[0021] 61. Inner tube; 62. Insulation tube; 63. U-shaped ring; 64. Slot; 65. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Please see Figs. 1-4This embodiment provides a heat-insulating and corrosion-resistant composite insulation pipe, including an outer pipe 1, a sealing ring 4, and an inner insulation pipe assembly 6. The inner insulation pipe assembly 6 is installed inside the outer pipe 1, and sealing rings 4 are inserted into both ends of the inner insulation pipe assembly 6. Several guide strips 2 are installed in a ring at intervals on the outer side of the outer pipe 1. The multiple guide strips 2 guide water from the outer pipe 1 to prevent water accumulation after wear during long-term use, which would lead to corrosion and rust. Flanges 3 are fixedly installed at both ends of the outer pipe 1. Several connecting bolts 5 are arranged in a ring on the flanges 3. The outer pipe 1 is connected and fixed to the sealing ring 4 through the flanges 3 and the connecting bolts 5 to prevent internal sliding and ensure sealing.

[0026] The sealing ring sleeve 4 includes an arc-shaped filler 41, a connecting ring 42, a first connecting bolt hole 43, a second connecting bolt hole 44, an inner ring 45, a second connecting bolt 46, an inner corner ring 47, a first sealing ring 48, an outer corner ring 49, and a second sealing ring 410. The connecting ring 42 is fixedly installed on the flat end of the arc-shaped filler 41. Several first connecting bolt holes 43 are opened on the connecting ring 42, and the first connecting bolt holes 43 are corresponding to the first connecting bolts 5. Several second connecting bolt holes 44 are fixedly opened on the inner ring side of the connecting ring 42. An inner ring 45 is provided on the inner ring side of the connecting ring 42, and several second connecting bolts 46 are provided on the inner ring 45. The inner corner ring 47 and the outer corner ring 49 are fixedly installed in the connecting ring 42 with the second connecting bolts 46 through the inner ring 45, which serves to block the transport medium in the insulation pipe at the connection point of the insulation pipe fitting. To prevent heat loss, one inner ring 45 is connected to an inner corner ring 47, and the other inner ring 45 is connected to an outer corner ring 49. The inner corner ring 47 is an inner right-angled triangular ring, and several sealing rings 48 are fixedly installed on the inclined surface of the inner corner ring 47. The outer corner ring 49 is an outer right-angled triangular ring, and several sealing rings 410 are fixedly installed on the inclined surface of the outer corner ring 49. Thus, the inner corner ring 47 and the outer corner ring 49 form a joint, and the elastic deformation of the sealing rings 48 and 410 increases the degree of connection sealing and reduces heat loss from the gaps in the insulation pipe connection. The arc-shaped filler 41, connecting ring 42, inner ring 45, inner corner ring 47, sealing ring 48, outer corner ring 49, and sealing ring 410 are made of nitrile rubber (NBR) and polyvinyl chloride (PVC).

[0027] The thermal insulation inner tube assembly 6 includes an inner tube 61, a heat insulation tube 62, a U-shaped ring 63, a slot 64, and a locking block 65. Two symmetrical U-shaped rings 63 are arranged in the annular cavity between the inner tube 61 and the heat insulation tube 62. The concave annular opening of the U-shaped ring 63 corresponds to the arc-shaped filler 41. Several slots 64 are spaced apart along the edge of the tube end face of the inner tube 61 and the heat insulation tube 62 near the annular cavity. Several locking blocks 65 are installed on the inner and outer annular ends of the U-shaped ring 63, which are inserted into the slots 64 to facilitate the disassembly and maintenance of the thermal insulation inner tube assembly 6. At the same time, the U-shaped ring 63 is used as a connector between the inner tube 61 and the heat insulation tube 62 to increase the heat transfer path and reduce the heat loss of the medium in the inner tube 61 through the outer end face of the inner tube 61.

[0028] The working principle of this utility model is as follows:

[0029] In use, this invention creates an annular cavity between the inner tube 61 and the insulation tube 62, and adds a metal U-shaped ring 63 as a connector between the inner tube 61 and the insulation tube 62, replacing the direct filling of the insulation material. This increases the pipe's robustness, extends the heat transfer path, and reduces the heat loss of the medium inside the inner tube 61 through the outer end face of the inner tube 61. Simultaneously, multiple locking blocks 65 on the U-shaped ring 63 engage with the corresponding slots 64, facilitating the disassembly and maintenance of the insulation inner tube assembly 6. Then, an arc-shaped filler 41 and a connecting ring 42 are used to fill the insulation between the insulation inner tube assembly 6 and the outer tube 1, reducing heat exchange between them. Additionally, an inner corner ring 47 and an outer corner ring 49 form a mating joint, and the elastic deformation of sealing ring 48 and sealing ring 410 increases the sealing degree, reducing heat loss through gaps in the insulation tube connection.

[0030] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A heat-insulating and corrosion-resistant composite insulation pipe, comprising an outer pipe (1), a sealing ring (4), and an inner insulation pipe assembly (6), characterized in that, The outer tube (1) is provided with an inner heat-insulating tube assembly (6), and sealing rings (4) are inserted at both ends of the inner heat-insulating tube assembly (6). Flanges (3) are fixedly installed at both ends of the outer tube (1). The sealing ring sleeve (4) includes an arc-shaped filler (41), a connecting ring (42), a first connecting bolt hole (43), a second connecting bolt hole (44), an inner ring (45), a second connecting bolt (46), an inner corner ring (47), a first sealing ring (48), an outer corner ring (49), and a second sealing ring (410). The connecting ring (42) is fixedly installed on the flat end of the arc-shaped filler (41). Several second connecting bolt holes (44) are fixedly opened on the inner ring side of the connecting ring (42). An inner ring (45) is provided on the inner ring side of the connecting ring (42). Several second connecting bolts (46) are provided on the inner ring (45). An inner corner ring (47) is connected to one inner ring (45), and an outer corner ring (49) is connected to the other inner ring (45). The inner corner ring (47) is an inner right-angled triangular ring, and the outer corner ring (49) is an outer right-angled triangular ring. The heat-insulating inner tube assembly (6) includes an inner tube (61), a heat insulation tube (62), a U-shaped ring (63), a slot (64), and a block (65). Two symmetrical U-shaped rings (63) are provided in the annular cavity between the inner tube (61) and the heat insulation tube (62). The concave annular opening of the U-shaped ring (63) is correspondingly provided with the arc-shaped filler (41).

2. The heat-insulating and corrosion-resistant composite insulation pipe according to claim 1, characterized in that, The outer tube (1) is provided with several guide strips (2) installed in an annular space on its outer side.

3. The heat-insulating and corrosion-resistant composite insulation pipe according to claim 1, characterized in that, The flange (3) is provided with a number of connecting bolts (5) in a ring shape. The outer tube (1) is connected and fixed to the sealing ring sleeve (4) through the flange (3) and the connecting bolts (5). The connecting ring (42) is provided with a number of connecting bolt holes (43), and the connecting bolt holes (43) are provided in accordance with the connecting bolts (5).

4. The heat-insulating and corrosion-resistant composite insulation pipe according to claim 1, characterized in that, Several sealing rings (48) are fixedly installed on the inclined surface of the inner corner ring (47), and several sealing rings (410) are fixedly installed on the inclined surface of the outer corner ring (49).

5. The heat-insulating and corrosion-resistant composite insulation pipe according to claim 1, characterized in that, The arc-shaped filler (41), connecting ring (42), inner ring (45), inner corner ring (47), sealing ring one (48), outer corner ring (49) and sealing ring two (410) are made of nitrile rubber (NBR) and polyvinyl chloride (PVC).

6. The heat-insulating and corrosion-resistant composite insulation pipe according to claim 1, characterized in that, The inner tube (61) and the heat insulation tube (62) have several slots (64) spaced apart along the edge on the tube end face near the annular cavity. The inner and outer ring ends of the U-shaped ring (63) are each equipped with several locking blocks (65) that correspond to and engage with the slots (64).

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