Heat preservation straight-through reducing pipe

Abstract

The utility model discloses a heat preservation straight-through reducing pipe, and relates to the technical field of reducing pipes, the heat preservation straight-through reducing pipe comprises a small-caliber connecting end and a large-caliber connecting end connected with the small-caliber connecting end, and the inner wall of the small-caliber connecting end and the inner wall of the large-caliber connecting end are both coated with an anti-corrosion high-temperature-resistant coating. A heat insulation plate is fixed to a shell of the large-diameter connecting end, and the outer wall of the small-diameter connecting end and the outer wall of the large-diameter connecting end are wrapped with flexible heat preservation layers. A first double-layer pipe hoop is arranged on the port portion of the small-caliber connecting end, a second double-layer pipe hoop is arranged on the port portion of the large-caliber connecting end, and the first double-layer pipe hoop and the second double-layer pipe hoop are arranged on the outer side of the flexible heat preservation layer. By the adoption of the structure, the problems that heat loss is caused, the outer side of a pipeline is eroded by the external environment and the service life of the pipeline is shortened due to the fact that the temperature of a medium in the reducing pipe is difficult to keep in an existing device are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a heat-insulating straight-through reducer. Background Art

[0002] Reducers, also often called reducers, have different diameters at both ends and are used to connect pipes or flanges of different diameters to reduce the diameter. Reducers are widely used and are often used in the petrochemical industry, water supply and drainage systems, or gas pipeline systems and other fields where liquids or gases circulate. Reducers can be designed with different diameter ratios according to actual needs to meet the flexible connection of pipeline systems.

[0003] However, when the pipeline is outdoors or the inner layer circulates a medium with high temperature requirements, the reducer is often not well protected. As a result, the pipeline will not only be corroded by the inner layer medium, but external interference will also cause serious heat loss when the pipeline transports high-temperature or low-temperature media, thereby failing to maintain the stability of the medium temperature.

[0004] Therefore, it is necessary to provide a heat-insulating straight-through reducer to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a heat-insulating straight-through reducer to solve the problem that the existing device is difficult to maintain the temperature of the medium inside the reducer, causing heat loss and the external environment corroding the outside of the pipe, thereby reducing the service life of the pipe.

[0006] To achieve the above-mentioned purpose, the utility model provides an insulated straight-through reducer, comprising a small-diameter connecting end and a large-diameter connecting end connected to the small-diameter connecting end, the inner walls of the small-diameter connecting end and the large-diameter connecting end are coated with an anti-corrosion and high-temperature resistant coating, an insulation board is fixed on the outer shell of the large-diameter connecting end, and the outer walls of the small-diameter connecting end and the large-diameter connecting end are wrapped with a flexible insulation layer.

[0007] Preferably, a connecting thread is provided on a side of the small-diameter connecting end away from the large-diameter connecting end, and a connecting thread is provided on a side of the large-diameter connecting end away from the small-diameter connecting end.

[0008] Preferably, the anti-corrosion and high-temperature resistant coating is any one of an epoxy resin anti-corrosion coating, a polyurethane anti-corrosion coating, an asphalt anti-corrosion coating, an elastic epoxy asphalt anti-corrosion coating, a silicone resin heat-resistant coating or an epoxy phenolic heat-resistant coating.

[0009] Preferably, the insulation board is any one of a hard rubber insulation board, a polyurethane sponge plastic insulation board, a rock wool board, a glass wool expanded polyaniline board, perlite or aluminum silicate fiber, and the insulation board is arranged at the inner wall annular groove of the large-diameter connecting end, and the height of the insulation board is the same as the height of the groove.

[0010] Preferably, the flexible thermal insulation layer is any one of glass wool felt, foam rubber or foam plastic, and the end of the flexible thermal insulation layer exceeds the end of the small-diameter connecting end and the end of the large-diameter connecting end.

[0011] Preferably, the port portion of the small-diameter connecting end is provided with a first double-layer pipe hoop, and the port portion of the large-diameter connecting end is provided with a second double-layer pipe hoop, and the first double-layer pipe hoop and the second double-layer pipe hoop are provided on the outside of the flexible insulation layer.

[0012] Therefore, the utility model adopts the above-mentioned heat-insulating straight-through reducer, which has the following beneficial effects:

[0013] 1. The utility model is provided with an anti-corrosion and high-temperature resistant coating on the inner layer, which reduces the erosion of the medium in the pipeline on the wall of the reducer, making the reducer suitable for the circulation of various media and prolonging the service life of the reducer;

[0014] 2. The utility model provides a heat insulation board on the large-diameter connection end, which can focus on protecting the area with more contact with the outside world, thereby reducing heat loss and improving the overall heat preservation capacity of the pipeline;

[0015] 3. The utility model is provided with a flexible insulation layer that is longer than the length of the reducer pipe, which can wrap the irregular outer wall of the pipe, thereby insulating the pipe in all directions. In addition, a pipe clamp is provided on the outside of the flexible insulation layer. The pipe clamp is connected to the reducer on one hand and connected to the pipe to be connected on the other hand, providing a double guarantee for the two pipes connected by thread. The flexible insulation layer has a certain inhibitory effect on pipe leakage.

[0016] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a heat-insulating straight-through reducer of the utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of a heat-insulating straight-through reducer of the utility model;

[0019] Reference numerals:

[0020] 1. Small-diameter connection end; 2. Large-diameter connection end; 3. Anti-corrosion and high-temperature resistant coating; 4. Thermal insulation board; 5. Flexible insulation layer; 6. Connection thread; 7. First double-layer pipe clamp; 8. Second double-layer pipe clamp; 9. Groove. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.

[0022] Unless otherwise defined, technical or scientific terms used in the present invention should have the common meanings understood by persons having ordinary skills in the field to which the present invention belongs.

[0023] The terms "include" or "comprising" and similar expressions used in this utility model mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of also including other elements. The directions or positional relationships indicated by the terms "inside", "outside", "upper", "lower", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations on this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In this utility model, unless otherwise clearly specified and limited, terms such as "attachment" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0024] As attached Figures 1-2 As shown, the utility model discloses an insulated straight-through reducer, comprising a small-diameter connecting end 1 and a large-diameter connecting end 2 connected to the small-diameter connecting end 1, the inner walls of the small-diameter connecting end 1 and the large-diameter connecting end 2 are coated with an anti-corrosion and high-temperature resistant coating 3, an insulation board 4 is fixed on the outer shell of the large-diameter connecting end 2, and the outer walls of the small-diameter connecting end 1 and the large-diameter connecting end 2 are wrapped with a flexible insulation layer 5.

[0025] A connecting thread 6 is provided on the side of the small-diameter connecting end 1 away from the large-diameter connecting end 2 , and a connecting thread 6 is provided on the side of the large-diameter connecting end 2 away from the small-diameter connecting end 1 , which is fixed to the pipes on both sides through the connecting thread 6 .

[0026] The anti-corrosion and heat-resistant coating 3 is any one of epoxy resin anti-corrosion coating, polyurethane anti-corrosion coating, asphalt anti-corrosion coating, elastic epoxy asphalt anti-corrosion coating, silicone resin heat-resistant coating, or epoxy phenolic heat-resistant coating. The anti-corrosion and heat-resistant coating 3 can effectively prevent internal corrosion of the pipeline and extend the service life of the pipeline.

[0027] Insulation board 4 can be any of hard rubber insulation board, polyurethane sponge insulation board, rock wool board, glass wool expanded polyaniline board, perlite, or aluminum silicate fiber. Insulation board 4 is positioned within annular groove 9 on the inner wall of large-diameter connecting end 2. The height of insulation board 4 is the same as the height of groove 9, ensuring a smooth connection between insulation board 4 and large-diameter connecting end 2.

[0028] The flexible insulation layer 5 is any one of glass wool felt, foam rubber or foam plastic. The end of the flexible insulation layer 5 exceeds the ends of the small-diameter connecting end 1 and the large-diameter connecting end 2. Therefore, the flexible insulation layer 5 can simultaneously wrap the end of the reducer and the end of the pipe to be connected. Through the flexible setting, even if there is a height difference between the pipes on both sides, the same covering is provided, which also provides insulation for the connection. In addition, the flexible insulation layer 5 set at the connection can provide a certain effect on the sealing of the pipe connection.

[0029] The port portion of the small-diameter connecting end 1 is provided with a first double-layer pipe clamp 7, and the port portion of the large-diameter connecting end 2 is provided with a second double-layer pipe clamp 8. The first double-layer pipe clamp 7 and the second double-layer pipe clamp 8 are arranged on the outside of the flexible insulation layer 5. The first double-layer pipe clamp 7 and the second double-layer pipe clamp 8 provide protection for the connection of the pipeline, and the double-layer pipe clamp can be adjusted front and back to adapt to pipelines with different outer wall diameters.

[0030] Therefore, the utility model discloses a heat-insulating straight-through reducer, which solves the problem that the existing device is difficult to maintain the temperature of the medium inside the reducer, causing heat loss and the external environment corroding the outside of the pipe, reducing the service life of the pipe.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A heat-insulating straight-through reducer, characterized in that: It includes a small-diameter connecting end and a large-diameter connecting end connected to the small-diameter connecting end. The inner walls of the small-diameter connecting end and the large-diameter connecting end are coated with an anti-corrosion and high-temperature resistant coating. An insulation board is fixed on the outer shell of the large-diameter connecting end. The outer walls of the small-diameter connecting end and the large-diameter connecting end are wrapped with a flexible insulation layer.

2. The heat-insulating straight-through reducer according to claim 1, characterized in that: A connecting thread is provided on a side of the small-diameter connecting end away from the large-diameter connecting end, and a connecting thread is provided on a side of the large-diameter connecting end away from the small-diameter connecting end.

3. The heat-insulating straight-through reducer according to claim 1, characterized in that: The anti-corrosion and high-temperature resistant coating is any one of an epoxy resin anti-corrosion coating, a polyurethane anti-corrosion coating, an asphalt anti-corrosion coating, an elastic epoxy asphalt anti-corrosion coating, a silicone resin heat-resistant coating or an epoxy phenolic heat-resistant coating.

4. The heat-insulating straight-through reducer according to claim 1, characterized in that: The insulation board is any one of a hard rubber insulation board, a polyurethane sponge plastic insulation board, a rock wool board, a glass wool expanded polyaniline board, perlite or aluminum silicate fiber. The insulation board is arranged at the inner wall annular groove of the large-diameter connecting end, and the height of the insulation board is the same as the height of the groove.

5. The heat-insulating straight-through reducer according to claim 1, characterized in that: The flexible thermal insulation layer is any one of glass wool felt, foam rubber or foam plastic, and the end of the flexible thermal insulation layer exceeds the end of the small-diameter connecting end and the end of the large-diameter connecting end.

6. The heat-insulating straight-through reducer according to claim 1, characterized in that: The port portion of the small-diameter connecting end is provided with a first double-layer pipe hoop, and the port portion of the large-diameter connecting end is provided with a second double-layer pipe hoop. The first double-layer pipe hoop and the second double-layer pipe hoop are arranged on the outside of the flexible insulation layer.

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