Corrosion-resistant heating and ventilation pipeline

Abstract

The utility model relates to the technical field of heating and ventilation pipelines, in particular to a corrosion-resistant heating and ventilation pipeline, which comprises a plurality of mutually connected pipe bodies, each pipe body comprises a barrel and a barrel-shaped wrapping layer wrapping the barrel, a flange plate is fixedly connected at the port of the barrel, and the flange plate is fixedly connected with the adjacent flange plates on another barrel through bolts. The inner diameter of openings in the two ends of the coating layer is larger than the outer diameter of the flange plate, one opening of the coating layer wraps the flange plate, and the coating layer is made of flexible materials. By means of the structure that the connecting rings are connected with the coating layers and the connecting rings move at the two ends of the flange plate, the coating layers on the two pipe bodies are connected and sealed, the coating layers of the pipe bodies can seal the flange plate and the barrel body when a plurality of pipe bodies are connected, and the sealing effect is consistent with the sealing effect when the pipe bodies are produced. Therefore, the poor sealing effect caused by secondary manual addition of the coating layer is prevented, and the corrosion resistance of the pipeline is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating and ventilation pipeline, concretely is corrosion -resistant heating and ventilation pipeline. BACKGROUND

[0002] The heating and ventilation pipeline is a tool for transmitting heat medium, generally used for transmitting hot water, hot air and the like, and is also widely applied to the return air pipe of the purification system, the ventilation pipe of the central air conditioner, the ventilation pipe of the industrial air supply and exhaust, the air suction and exhaust pipe of the environmental protection system, the gas pipe of the mine extraction, the air cylinder of the mine rubberized cloth and the like.

[0003] Generally, when the heating and ventilation pipeline transmits heat medium, the heat exchange rate between the pipeline and the external environment is reduced by using the heat preservation layer, at the same time, when installing, the heating and ventilation pipeline is installed underground, and the relative temperature of the underground is utilized to further increase the heat preservation effect.

[0004] However, in actual use, the heating and ventilation pipeline needs to be completely covered by soil, and the soil itself has corrosiveness and oxidizability to the metal material of the heating and ventilation pipeline, and when laying the long pipeline, a plurality of short pipelines are usually welded or spliced to form the long pipeline, the heat preservation layer of the heating and ventilation pipeline is coated on the outer surface of the pipeline during the preparation of the pipeline, the heat preservation layer of the pipeline cannot coat the pipeline connection part during the welding or flange splicing of the short pipeline, even if the heat preservation material is used to coat the connection part of the heating and ventilation pipeline, the connection part of the pipeline cannot be completely isolated from the soil environment, and the welding or flange splicing of the metal pipeline to connect the heating and ventilation pipeline can also reduce the oxidation resistance of the heating and ventilation pipeline, so that the connection part of the heating and ventilation pipeline is easily oxidized and corroded after being buried underground.

[0005] Therefore, a new technical scheme needs to be proposed to solve the above problems. UTILITY MODEL CONTENT

[0006] In view of the deficiencies of the prior art, the purpose of the utility model is to provide the corrosion -resistant heating and ventilation pipeline.

[0007] The above technical purpose of the utility model is realized through the following technical scheme: the corrosion-resistant heating and ventilation pipeline comprises a plurality of mutually connected pipe bodies, the pipe body comprises a cylinder body and a cladding layer wrapping the cylinder body and being cylindrical, a flange plate is fixedly connected at the cylinder body port, the flange plate and the flange plate on the other cylinder body are fixedly connected through bolts, the inner diameter of the two openings of the cladding layer is greater than the outer diameter of the flange plate, one opening of the cladding layer wraps the flange plate, the cladding layer is made of flexible material, and the opening of the cladding layer can move relative to the flange plate and expose the flange plate, the other opening of the cladding layer is located between the two adjacent flange plates, and the opening of the cladding layer wrapping the flange plate and the opening between the two flange plates of the adjacent cladding layer are fixedly connected through a connecting device.

[0008] By adopting the above technical scheme, the adjacent two flange plates are connected into a whole through the bolt connection mode, then the adjacent two cladding layers are connected through the connecting device, then the plurality of cladding layers wrap the plurality of connected cylinder bodies and isolate the cylinder bodies from the external environment, the inner diameter of the two openings of the cladding layer is set and the position relationship with the flange plate is utilized, the connection position of the two cladding layers is staggered with the position of the flange plate, the connection ring and the flange plate are prevented from being on the same cross section, the sealing layer can adaptively change the position when the soil covers the outer surface of the pipeline, the hard contact is reduced, the damage is reduced, the outer dimension of the pipeline is reduced, the installation is facilitated, the flange plate can be welded on the cylinder body before installation, then the cladding layer is sleeved, the two openings of the cladding layer are rolled back, the flange plate is exposed, the two flange plates are connected, the opening of the cladding layer is rolled forward and the two connection rings are connected, the installation is completed, the second cladding layer is saved, the sealing effect of the cylinder body is consistent with the connection sealing effect of the two cladding layers, the gap at the connection position caused by the second addition of the cladding layer is prevented, the cladding layer can be sleeved on the cylinder body, the cylinder body is placed, the cladding layer is rolled back, the flange plate is welded on the cylinder body, the two flange plates are connected, the cladding layer is rolled forward and the two connection rings are connected, the cylinder body and the flange plate are packaged in batches during transportation, the transportation is facilitated, the cladding layer wrapping the cylinder body and the flange plate can satisfy the welding of the flange plate and the cylinder body and can satisfy the welding of the flange plate and the cylinder body, the sealing effect of the cylinder body and the flange plate is guaranteed, and the corrosion effect of the soil on the metal material of the cylinder body and the flange plate is reduced.

[0009] The utility model further sets up: the connecting device includes the connecting ring that is fixedly connected with the cladding layer opening end face, and the connecting ring on two adjacent cladding layers is fixedly connected through a bolt.

[0010] By adopting the technical scheme, the two adjacent cladding layers are connected into one body by the bolt connection mode of the two connecting rings, then the cylinder and the flange plate are cladded, and the two are separated from the soil environment, thereby preventing the soil environment from contacting and corroding the cylinder and the flange plate, and increasing the service life.

[0011] The utility model further sets up: the cladding layer includes the isolation layer, the heat preservation layer and the sealing layer that set out of order from the cylinder pipe face outward, and sealing layer, heat preservation layer and isolation layer are fixedly connected with each other.

[0012] By adopting the technical scheme, the cylinder, the flange plate, the heat preservation layer and the isolation layer are separated from the soil environment by the sealing layer, the sealing effect is increased, the water, the gas, the solid and other substances in the soil are prevented from directly contacting the cylinder and the flange plate, the corrosion effect is reduced, the salt and the micro-current in the soil are prevented from contacting the cylinder and the flange plate, and the electrochemical corrosion of the cylinder and the flange plate made of metal material is prevented.

[0013] The utility model further sets up: the connecting ring is away from the end face of another connecting ring on the same cladding layer and is provided with a sealing groove, and a sealing ring is clamped in the sealing groove.

[0014] By adopting the technical scheme, the sealing ring is clamped in the sealing groove, when the two adjacent connecting rings are locked by the bolt, the sealing ring is tightly attached to the inner wall of the sealing groove, the sealing property between the two adjacent connecting rings is increased, the sealing effect of the cladding layer on the cylinder and the flange plate is increased, and the corrosion resistance of the pipeline is further increased.

[0015] The utility model further sets up: the maximum inner diameter of the cladding layer opening and the connecting ring is greater than the maximum outer diameter of the flange plate, and the connecting ring is made of PUA material.

[0016] By adopting the technical scheme, the elastic property of the connecting ring made of PUA material and the structure that the maximum inner diameter of the connecting ring is greater than the maximum outer diameter of the flange plate are used, when the connecting ring is extruded, the elastic deformation of the connecting ring occurs, the connecting ring is deformed into an ellipse, the short axis length of the connecting ring is less than or equal to the outer diameter of the flange plate, the flange plate bears the external force, the connecting ring can move on both sides of the flange plate, the flange plate bears a large external force, the pressure of the external environment on the connecting ring is reduced while the movement of the connecting ring is met, and the use effect of the pipeline is greatly increased.

[0017] The utility model further sets up: the sealing layer is fixedly connected with the end face of the connecting ring and keeps sealing, and the bolt connection points of the two connecting rings are located at the position outside the cylinder relative to the connecting position of the sealing layer and the connecting ring.

[0018] By adopting the technical scheme, the bolt connection point of the connecting ring is arranged at the position outside the cylinder relative to the connecting position of the sealing layer and the connecting ring, so that the bolt can be rotated and locked at the outer environment position when the two connecting rings are connected, and the sealing effect on the cylinder and the flange plate is further improved through the connection of the connecting ring and the sealing layer.

[0019] In summary, the utility model has the following beneficial effects:

[0020] The connecting ring is connected with the cladding layer and moves at the position of the two ends of the flange plate, and when connecting and positioning the plurality of cylinders, the cladding layer is unwound and the flange plate is exposed, then the two flange plates are connected and fastened by the bolt, the cladding layer is unwound again and the flange plate is covered, and the cladding layers on the two cylinders are connected and sealed, so that the cladding layer of the cylinder itself can seal the flange plate and the cylinder when connecting the plurality of cylinders, and the sealing effect is consistent with the sealing effect when producing the cylinder, so as to prevent poor sealing effect caused by adding the cladding layer manually, and increase the corrosion resistance of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the utility model;

[0022] Figure 2 It is a structural schematic view of the cylinder in the utility model;

[0023] Figure 3 It is a sectional view of the utility model;

[0024] Figure 4 It is a structural schematic view of the cylinder in the utility model;

[0025] Figure 5 It is a structural schematic view of the utility model Figure 3 at A.

[0026] In the figure:

[0027] 11, sealing layer; 12, heat preservation layer; 13, isolation layer; 14, connecting ring; 15, cylinder; 16, flange plate; 17, sealing groove; 18, sealing ring. DETAILED DESCRIPTION

[0028] The utility model will be described in detail below in combination with the drawings in the embodiment. EMBODIMENT

[0029] The corrosion-resistant heating and ventilation pipeline, such as Figures 1 to 5As shown, the device includes several interconnected pipes. Each pipe includes a cylindrical body 15 and a covering layer that encloses it in a cylindrical shape. A flange 16 is fixedly connected to the end of the cylindrical body 15, and the flange 16 is bolted to another flange 16 on another cylindrical body 15 that is close to each other. The inner diameter of the openings at both ends of the covering layer is larger than the outer diameter of the flange 16. One opening of the covering layer covers the flange 16. The covering layer is made of a flexible material, and the opening of the covering layer can move relative to the flange 16 and expose the flange 16. The other opening of the covering layer is located between two adjacent flanges 16. The opening of the covering layer that covers the flange 16 is fixedly connected to the opening of the adjacent covering layer located between two flanges 16 by a connecting device. The connecting device includes a connecting ring 14 fixedly connected to the end face of the opening of the covering layer, and the connecting rings 14 on two adjacent covering layers are bolted together.

[0030] like Figure 3 and Figure 5 As shown, the covering layer includes an isolation layer 13, an insulation layer 12, and a sealing layer 11 arranged sequentially from the tube surface of the cylinder 15 outwards. The sealing layer 11, the insulation layer 12, and the isolation layer 13 are fixedly connected to each other. A sealing groove 17 is opened on the end face of the connecting ring 14 away from another connecting ring 14 on the same covering layer. A sealing ring 18 is snapped into the sealing groove 17. The maximum inner diameter of the opening of the covering layer and the connecting ring 14 is greater than the maximum outer diameter of the flange 16. The connecting ring 14 is made of PUA material.

[0031] like Figure 1 , Figure 3 and Figure 5 As shown, the sealing layer 11 is fixedly connected to the end face of the connecting ring 14 and maintains a seal, and the bolt connection point of the two connecting rings 14 is located on the outer side of the connection between the sealing layer 11 and the connecting ring 14 relative to the cylinder 15.

[0032] The coating layer is sleeved on the cylinder 15 to form a pipe body, the opening at one end of the coating layer is folded, the length of the coating layer is shortened, and both openings of the coating layer are located at the middle of the two flanges 16, then the other end of the coating layer of the other pipe body is connected with the folded end of the coating layer of the pipe body, the flanges 16 of the two pipe bodies are fastened by bolts, then the coating layer is reset and the two flanges 16 are covered, and the two connecting rings 14 are connected by bolts and fastened, so that the coating layer can cover the several cylinders 15 and flanges 16 when connecting the several pipe bodies, and separate them from the soil environment, prevent the welding points of the flanges 16 and the cylinders 15 from directly contacting the soil environment, prevent the water, oxygen and micro-current, salt ions in the soil from causing electrochemical corrosion of the cylinders 15 and the flanges 16 and their welding points, and also prevent the sealing effect from being unstable when the artificial fills the insulating material at the position of the flanges 16, thereby increasing the corrosion resistance of the pipeline, preventing the installation of the cylinders 15 and the flanges 16 from causing poor sealing effect, and using the structure that the sealing ring 18 is clamped into the sealing groove 17, when the two connecting rings 14 are locked by bolts, the sealing ring 18 can abut and press tightly against the inner wall of the sealing groove 17, thereby increasing the sealing property between the two connecting rings 14, preventing the soil outside the coating layer, the air in the soil and the water in the soil from entering the position of the cylinders 15 and the flanges 16 through the gap of the connecting ring 14, further increasing the corrosion resistance of the pipe body, using the coating layer to cover the flanges 16 and make the connecting points located outside the flanges 16, and using the elastic characteristics of the PUA material of the connecting ring 14, so that the connecting ring 14 is deformed into an elliptical shape when the pipe body is extruded, and the short axis of the outer size is less than or equal to the maximum outer diameter of the flange 16, so that the connecting ring 14 can deform outside the flange 16, and the flange 16 resists external impact to prevent the connecting ring 14 from being directly impacted and causing the sealing property at the position of the connecting ring 14 to be damaged, and the flange 16 also protects the entire pipe body to increase the service life, wherein the coating layer is composed of a sealing layer 11, a heat preservation layer 12 and an isolation layer 13, the sealing layer 11 located at the outermost side is made of flexible PUA material, which not only increases the overall sealing effect, but also has a certain flexibility, so that the opening of the coating layer and the connecting ring 14 can move at the positions of the two ends of the flange 16, increasing the use effect, and the heat preservation layer 12 made of asbestos material and the isolation layer 13 made of flexible sponge material increase the heat preservation effect of the cylinder 15, the heat preservation layer 12 made of asbestos material greatly increases the heat preservation effect, and the isolation layer 13 made of flexible sponge material not only increases the heat preservation effect, but also prevents the asbestos from falling onto the cylinder 15, preventing the asbestos material from falling during installation and causing harm to the installer,Meanwhile, the sealing layer 11, the heat preservation layer 12 and the isolation layer 13 can also isolate the micro-current in the soil to prevent electrochemical corrosion on the metal material cylinder 15 and the flange plate 16.

[0033] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and refinements without departing from the principles of the present application, these improvements and refinements shall also be considered as the protection scope of the present application.

Claims

1. Corrosion resistant heating and plumbing pipe comprising a number of mutually connected pipe bodies, characterized in that: The pipe body comprises a cylinder (15) and a cladding layer wrapping and being cylindrical, the cylinder (15) is fixedly connected with a flange (16) at a port, and the flange (16) is fixedly connected with another flange (16) on the cylinder (15) by bolts, the inner diameter of the cladding layer at two openings is greater than the outer diameter of the flange (16), one opening of the cladding layer wraps the flange (16), the cladding layer is made of flexible material, and the opening of the cladding layer can move relative to the flange (16) and expose the flange (16), the other opening of the cladding layer is located between the two adjacent flanges (16), and the opening of the cladding layer wrapping the flange (16) and the opening of the cladding layer between the two flanges (16) are fixedly connected by a connecting device.

2. The corrosion resistant heating and plumbing conduit of claim 1, wherein: The connecting device comprises a connecting ring (14) fixedly connected with the opening end surface of the cladding layer, and the connecting rings (14) on the two adjacent cladding layers are fixedly connected by bolts.

3. The corrosion resistant heating and plumbing conduit of claim 2, wherein: The cladding layer comprises an isolation layer (13), a heat preservation layer (12) and a sealing layer (11) arranged outward from the pipe surface of the cylinder (15) in sequence, and the sealing layer (11), the heat preservation layer (12) and the isolation layer (13) are fixedly connected with each other.

4. The corrosion resistant heating and plumbing conduit of claim 2, wherein: The end surface of the connecting ring (14) away from another connecting ring (14) on the same cladding layer is provided with a sealing groove (17), and a sealing ring (18) is clamped in the sealing groove (17).

5. The corrosion resistant heating and plumbing conduit of claim 2, wherein: The maximum inner diameter of the opening of the cladding layer and the connecting ring (14) is greater than the maximum outer diameter of the flange (16), and the connecting ring (14) is made of PUA material.

6. The corrosion resistant heating and plumbing conduit of claim 3, wherein: The sealing layer (11) is fixedly connected with the end surface of the connecting ring (14) and keeps sealing, and the bolt connection points of the two connecting rings (14) are located at the positions outside the cylinder (15) at the connecting positions of the sealing layer (11) and the connecting ring (14).

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