CN103574222B - A kind of water-proof horizontal pipe thermal-insulation structure - Google Patents

Abstract

A kind of water-proof horizontal pipe thermal-insulation structure of the present invention, described heat-insulating structure comprises insulation material layer, protective coating and sealing configuration; Described insulation material layer is wrapped in the outer surface of described pipeline, and described protective coating is split type protective coating, and described protective coating closely wraps up the outer surface being arranged on described insulation material layer; Described sealing configuration is arranged on split type protective coating and described thermal-protective material interlayer, for sealed heat insulating material.Water-proof horizontal pipe thermal-insulation structure of the present invention, this structure can make heat-insulating pipeline not easily deform to come off, and anti-sealing enters thermal-protective material simultaneously.

Description

A waterproof horizontal pipeline heat insulation structure

technical field

The invention relates to the field of pipeline heat insulation structure, and more specifically relates to a waterproof horizontal pipeline heat insulation structure.

Background technique

In the prior art, a large number of heat insulation pipes used in industrial installations use heat-insulating materials with galvanized thin steel plates or aluminum alloy thin plates to fix the structure. When the pipe system vibrates or the temperature of the pipe wall changes, the heat expansion and contraction of the pipes will occur. In some cases, the heat insulation protection layers will slide against each other, and the thin plates of the protection layer will be easily deformed and fall off, which will cause the heat insulation failure of the pipeline and make it impossible to seal and waterproof.

After the pipeline protective layer deforms, falls off or slides against each other, rain, snow and moist gas can easily enter the interior of the pipeline insulation structure, and the damage caused is mainly reflected in the following aspects:

1. There is a large amount of energy loss in the process of water entering the heat insulation structure. The water directly contacts the outer wall of the high-temperature pipe, and the heat transfer temperature difference is large. The water will evaporate rapidly, generate air bubbles and cause strong agitation, and the heat transfer coefficient will increase.

2. The thermal conductivity of water to the insulation material increases. Fibrous thermal insulation materials have the advantages of high temperature resistance, good thermal insulation effect, and moderate price. They are widely used in thermal insulation projects for high-temperature equipment and pipelines. However, their strong water absorption and easy failure are fatal shortcomings.

3. The process of water entering the insulation structure will promote the corrosion of the insulated pipe and the metal protective layer.

In general, a large number of structural pipeline heat insulation systems in the prior art that use heat insulation materials on the outside and fix them with galvanized steel sheets or aluminum alloy sheets have the following disadvantages: (1) The heat insulation protection layer is prone to deformation, (2) It cannot prevent water from entering the insulation material; thus causing the failure of the pipeline insulation.

Contents of the invention

In order to solve the above problems in the prior art, the present invention provides a waterproof horizontal pipeline heat insulation structure, which can make the heat insulation pipeline not easy to deform and fall off, and at the same time prevent water from entering the heat insulation material.

The purpose of the present invention is achieved through the following technical solutions:

A waterproof horizontal pipeline heat insulation structure, the heat insulation structure includes a heat insulation material layer, a protective layer and a sealing structure; the heat insulation material layer is wrapped on the outer surface of the pipeline, and the protective layer is split The protective layer is tightly wrapped and arranged on the outer surface of the heat insulating material layer; the sealing structure is arranged between the split protective layer and the heat insulating material layer for sealing the heat insulating material.

The split protective layer includes at least two split protective outer tubes, the diameters of which are different between the split protective outer tubes; The nozzle of the protective outer tube is closely attached to the outer wall of the protective outer tube with a small diameter, and there is no fixed connection between them.

In order to support the protective layer, the heat insulation structure also includes at least one pair of protective support components, each of which is respectively arranged in the heat insulation material layer between the inner surface of each protective outer tube and the pipeline; and is fixed on The socket between the split protective outer tubes is used to support the protective outer tubes.

Each protective support assembly includes a support assembly heat insulation material ring 6-1 and an inorganic glass fiber reinforced plastic shell 6-2; the inorganic glass fiber reinforced plastic shell 6-2 is fixedly sleeved on the outer surface of the support assembly heat insulation material ring 6-1 superior;

The protective support assembly is arranged in the heat insulation material layer 2, that is, the left and right end faces of the inorganic glass fiber reinforced plastic shell 6-2 are fixedly connected to the heat insulation material layer 2; the part between the two support components is filled with insulation Thermal material 2; the part of the annular end surface of the inorganic glass fiber reinforced plastic shell 6-2 is connected with the protective layer.

In order to prevent the heat insulation material from contacting with water, a sealing structure is provided between the annular end face of the inorganic glass fiber reinforced plastic shell 6-2 and the protective layer, and the sealing structure is a gasket ring 7 for sealing the heat insulation material layer.

A fixing component is arranged between the annular end face of the inorganic glass fiber reinforced plastic shell 6-2 and the protective layer provided with a sealing structure, and the fixing component is a set of rivets, and the rivets connect the protective layer and the gasket ring 7 It is fixedly connected with the inorganic glass fiber reinforced plastic shell 6-2.

In order to lead out the liquid flowing into the protective layer as soon as possible, a liquid guide groove 9 is arranged between the annular end face of the inorganic glass reinforced plastic shell 6-2 and the protective layer, that is, one end of the annular end face of the inorganic glass reinforced plastic shell 6-2 is connected to the protective layer. The protective layer is connected, and the liquid guide groove 9 is between the remaining annular end surface and the inner surface of the protective layer.

In order to prevent a large amount of liquid from entering, a water retaining hoop 5 is arranged in the liquid guide groove 9 along the inner wall surface of the protective layer. In the liquid guide groove 9, a water retaining hoop 5 is arranged along the inner wall surface direction of the protective layer; the gap between the water retaining hoop 5 and the outer surface of the inorganic glass fiber reinforced plastic shell 6-2 is 2 mm; and The gap between the protective layers is 5 mm; the water retaining hoop 5 is sleeved on the upper end of the inorganic glass fiber reinforced plastic shell 6-2 and riveted. What is set in the water retaining hoop is a heat insulating material 2 .

In order to lead out the liquid, the present invention is provided with drain holes 10 on the protective layer, and the drain holes 10 are arranged at the lower part of the integral heat insulation structure, at the joint of the split protective layer.

In a specific implementation, the split protective layer includes two split protective outer tubes: protective outer tube one 3 and protective outer tube two 8, and the pipe diameters between the two split protective outer tubes are different; The nozzle socket connection method is adopted between the split protective outer tubes, that is, the nozzle of the protective outer tube with a large diameter is closely attached to the outer wall of the protective outer tube with a small diameter, and there is no fixed connection between them;

The heat insulation structure also includes two protective support components, the two protective support components are respectively arranged in the heat insulation material layer between the inner surface of the two protective outer tubes and the pipeline; and fixed on the split protective outer tube The socket between is used to support the protective outer tube;

The two protective support assemblies include a support assembly hard heat insulation material ring 6-1 and an inorganic glass fiber reinforced plastic shell 6-2; the inorganic glass steel shell 6-2 is fixedly socketed on the support assembly heat insulation material ring 6-1 on the outer surface of

The protective support assembly is arranged in the heat insulation material layer 2, that is, the left and right end faces of the inorganic glass fiber reinforced plastic shell 6-2 are fixedly connected to the heat insulating material layer 2; the part of the inorganic glass steel shell 6-2 The annular end face is connected to the protective layer 3;

A gasket ring 7 is arranged between the annular end face of the inorganic FRP shell 6-2 and the protective layer 3, and the gasket ring 7 is a non-metallic gasket ring for sealing the heat insulating material layer;

A fixing component is arranged between the annular end face of the inorganic glass fiber reinforced plastic shell 6-2 and the protective layer 3 provided with a sealing structure, and the fixing component is 2 rivets, and the rivets connect the protective layer 3 and the gasket The ring 7 and the inorganic glass fiber reinforced plastic shell 6-2 are fixedly connected together.

The thermal insulation material is one of aluminum silicate thermal insulation cotton, composite silicate thermal insulation cotton, and aluminum magnesium silicate thermal insulation cotton; the density of the thermal insulation material ring 6-1 is greater than that of the thermal insulation material, that is, it can Insulation can also play a supporting role.

In the present invention, a water tank is provided on the outer surface of the supporting assembly, and drainage holes are provided on the surface where the first protective outer tube and the second protective outer tube overlap, so that even if water enters the gap between the first protective outer tube and the second protective outer tube, due to The support components are respectively sealed and connected with the first protective outer tube and the second protective outer tube. The water can only flow from the flow groove on the outer surface of the support component to the bottom, and finally from the corresponding position above the first protective outer tube and the second protective outer tube. The holes flow out and the water does not come into contact with the insulation.

Such a connection structure can avoid water seepage, cracks, loose joints, falling, etc. in the thermal insulation structure when the pipeline is thermally deformed or vibrated, which improves the heat insulation performance of the pipeline and avoids the loss of pipeline energy. The waterproof horizontal pipeline heat insulation structure of the present invention can be used for horizontal pipeline heat insulation structures in new installations and renovations of existing installations in petroleum, petrochemical, electric power and other industrial enterprises.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a waterproof horizontal pipeline heat insulation structure of the present invention.

1 pipeline; 2 heat insulation material layer; 3 protective outer pipe 1; 4 rivets; 5 water retaining hoop; 6 protective support component; Ring; 8 protective outer pipe two; 9 liquid guiding groove; 10 is a drain hole

Detailed ways

Below in conjunction with embodiment, further illustrate the present invention.

The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

As shown in Figure 1, a waterproof horizontal pipeline heat insulation structure involved in this embodiment includes: heat insulation material 2, protective outer pipe 1 3, rivets 4, water retaining collar 5, support components 6, non-metallic materials The gasket ring 7 and the protective outer tube 2 8, the heat insulating material 2 is coated on the outer wall of the pipeline 1, and the inner side of the butt joint between the protective outer tube 1 3 and the protective outer tube 2 8 is respectively provided with a protective support assembly 6, The heat insulating material 2 at one end and the protective support assembly 6 are covered with a protective outer tube 3, and a non-metallic sealing gasket ring 7 is arranged between the protective outer tube 1 3 and the protective support assembly 6, and the rivet 4 runs through the protective outer shell. Between the pipe one 3, the non-metallic material sealing gasket ring 7 and the protective support assembly 6; the outer surface of the heat insulating material 2 and the protective support assembly 6 at the other end is covered with a protective outer tube 2 8, and the protective outer tube 2 8 is connected with the protective support A non-metallic material gasket ring 7 is arranged between the components 6, and the rivet 4 penetrates between the protective outer tube 2 8, the non-metallic material gasket ring 7 and the protective support component 6, and the gap between the two protective support components 6 is provided with The water retaining hoop 5, the outer diameter of the protective outer tube 1 3 is smaller than the outer diameter of the protective outer tube 2 8, and the protective outer tube 2 8 is sleeved on the protective outer tube 1 3 at the junction of the protective outer tube 1 3 and the protective outer tube 2 8 , the outer surface of the protective support assembly 6 is provided with a water groove 9 .

Drainage holes 10 are respectively provided at the bottom of the butt joint between the first protective outer tube 3 and the second protective outer tube 8 .

The support assembly 6 is composed of a hard heat insulating material 6-1 and an inorganic glass fiber reinforced plastic shell 6-2, and the inorganic glass steel shell 6-2 is covered on the outside of the hard heat insulating material 6-1.

The above is only a specific implementation of the present invention, and other implementations are based on different implementations under the overall concept of the present invention, and the scope of protection of the present invention is not limited thereto, anyone familiar with the technical field Within the technical scope disclosed in the present invention, changes or substitutions that can be easily conceived by personnel shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. A waterproof horizontal pipeline heat insulation structure, characterized in that: The heat insulation structure includes a heat insulation material layer, a protection layer and a sealing structure; the heat insulation material layer is wrapped on the outer surface of the pipeline, the protection layer is a split type protection layer, and the protection layer is tightly wrapped It is arranged on the outer surface of the heat insulation material layer; the sealing structure is arranged between the split protective layer and the heat insulation material layer for sealing the heat insulation material; a drain hole (10 ), and the drainage hole (10) is arranged at the lower part of the heat insulation structure, at the joint of the split protective layer. 2. A waterproof horizontal pipeline heat insulation structure according to claim 1, characterized in that: The split protective layer includes at least two split protective outer tubes, the diameters of which are different between the split protective outer tubes; The spout of the split protective outer tube is closely attached to the outer wall of the split protective outer tube with a small diameter, and there is no fixed connection between the split protective outer tube with a large diameter and the split protective outer tube with a small diameter. 3. A waterproof horizontal pipeline heat insulation structure according to claim 2, characterized in that: The heat insulation structure also includes at least one pair of protective support components, and each of the protective support components is respectively arranged in the heat insulation material layer between the inner surface of each split protective outer tube and the pipeline; and is fixed on the split protective The socket between the outer tubes is used to support the split protective outer tube. 4. A waterproof horizontal pipeline heat insulation structure according to claim 3, characterized in that: Each protective support assembly includes a support assembly heat insulation material ring (6-1) and an inorganic glass fiber reinforced plastic shell (6-2); the inorganic glass fiber reinforced plastic shell (6-2) is fixedly sleeved on the support assembly heat insulation material ring (6-1) on the outer surface; The protective support assembly is arranged in the heat insulation material layer (2), that is, the left and right end faces of the inorganic glass fiber reinforced plastic shell (6-2) are fixedly connected to the heat insulation material layer (2); the inorganic glass fiber reinforced plastic A partially annular end face of the casing (6-2) is connected to said protective layer. 5. A waterproof horizontal pipeline heat insulation structure according to claim 4, characterized in that: A sealing structure is provided between the annular end face of the inorganic glass fiber reinforced plastic shell (6-2) and the protective layer, and the sealing structure is a gasket ring (7) for sealing the heat insulating material layer. 6. A waterproof horizontal pipeline heat insulation structure according to claim 5, characterized in that: A fixing part is arranged between the annular end face of the inorganic glass fiber reinforced plastic shell (6-2) and the protective layer provided with a sealing structure, and the fixing part is a set of rivets, and the rivets connect the protective layer, the sealing gasket The ring (7) and the inorganic glass fiber reinforced plastic shell (6-2) are fixedly connected together. 7. A waterproof horizontal pipeline heat insulation structure according to claim 4, characterized in that: A liquid guide groove (9) is arranged between the annular end face of the inorganic glass reinforced plastic shell (6-2) and the protective layer, that is, one end of the annular end face of the inorganic glass reinforced plastic shell (6-2) is connected to the protective layer , between the remaining annular end faces and the inner surface of the protective layer is the liquid guiding groove (9). 8. A waterproof horizontal pipeline heat insulation structure according to claim 7, characterized in that: In the liquid guide groove (9), a water retaining hoop (5) is arranged along the inner wall surface direction of the protective layer; the water retaining hoop (5) and the outer surface of the inorganic glass fiber reinforced plastic shell (6-2) The gap is 2 millimeters; and the gap with the protective layer is 5 millimeters; the water retaining hoop (5) is sleeved on the upper end of the inorganic glass fiber reinforced plastic shell (6-2) and riveted. 9. A waterproof horizontal pipeline heat insulation structure according to claim 1, characterized in that: The split protective layer includes 2 split protective outer tubes, and the diameters of the two split protective outer tubes are different; the split protective outer tubes adopt the socket socket method, that is, the large diameter The nozzle of the split protective outer tube of the small diameter is closely attached to the outer wall of the split protective outer tube of the small diameter, and there is no fixed connection between the split protective outer tube of the large diameter and the split protective outer tube of the small diameter; The heat insulation structure also includes two protective support components, the two protective support components are respectively arranged in the heat insulation material layer between the inner surface of the two split protective outer tubes and the pipeline; The socket between the outer tubes is used to support the split protective outer tube; The two protective support components include a support component heat insulation material ring (6-1) and an inorganic glass fiber reinforced plastic shell (6-2); the inorganic glass fiber reinforced plastic shell (6-2) is fixedly sleeved on the support component heat insulating material on the outer surface of the ring (6-1); The protective support assembly is arranged in the heat insulation material layer (2), that is, the left and right end faces of the inorganic glass fiber reinforced plastic shell (6-2) are fixedly connected to the heat insulation material layer (2); the inorganic glass fiber reinforced plastic A part of the annular end surface of the shell (6-2) is connected to the protective layer (3); A gasket ring (7) is arranged between the annular end face of the inorganic glass fiber reinforced plastic shell (6-2) and the protective layer (3), and the gasket ring (7) is a non-metallic gasket ring for sealing the insulating material layer; A fixing component is arranged between the annular end face of the inorganic glass fiber reinforced plastic shell (6-2) and the protective layer (3) provided with a sealing structure, and the fixing component is 2 rivets, and the rivets hold the protective layer (3), the gasket ring (7) and the inorganic glass fiber reinforced plastic shell (6-2) are fixedly connected together. 10. A waterproof horizontal pipeline heat insulation structure according to claim 4 or 9, characterized in that: The heat insulation material of the heat insulation material layer is one of aluminum silicate heat insulation cotton, composite silicate heat insulation cotton, aluminum magnesium silicate heat insulation cotton; the density of the heat insulation material ring (6-1) is greater than the The density of the heat insulation material in the heat insulation material layer can not only insulate heat but also play a supporting role.