Water vapor removing device for inner wall of steel pipe

Abstract

The utility model discloses a water vapor removing device for the inner wall of a steel pipe, belongs to the technical field of steel pipe machining, and solves the problem that condensation of water vapor from air on the inner wall of a pipe may cause a non-uniform cooling process. Comprising a hot air backflow flow path, a gap is formed in a loop of the hot air backflow flow path, the gap is used for detachable steel pipes, and the distance between the gaps can be adjusted. The air inlet and outlet branch pipes with the necking soft rubber heads at the two ends are used for sealing the ends of batch steel pipes, the telescopic corrugated pipe is matched to adapt to the length of the steel pipes, the heating module and the air extracting pump are started to form a hot air loop, and circulating air is heated to remove water vapor on the inner wall; excess branch pipes are sealed through the electromagnetic valves to prevent hot air from being exhausted, and efficient dehumidification is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a device for removing water vapor from the inner wall of a steel pipe. Background Art

[0002] At present, in many industries, pipes made of stainless steel or alloy materials are widely used to transport various fluid media such as water, natural gas, and oil. In view of the characteristics of various transportation environments, it has become an important engineering measure to carry out specific coating treatment on the inner and outer walls of pipes. For example, pipelines responsible for conveying corrosive materials such as chemical raw materials, oil, and natural gas must be coated with anti-corrosion coatings to extend their operating life due to their long-term exposure to corrosive gas or liquid environments. Similarly, pipelines used to transport high-temperature media such as hot water or steam must also be coated with high-temperature resistant coatings on their surfaces to avoid oxidation and erosion caused by high temperatures. For those pipeline systems buried underground, such as municipal water supply and drainage pipes and natural gas pipelines, surface anti-corrosion treatment is also a key step to ensure their long-term and stable service, given that they are easily affected by groundwater, soil, and various chemicals. In addition, in the coating process of pipe fittings, when using materials such as epoxy coatings and polyurethane coatings, it is often necessary to heat the pipe fittings in advance to enhance the adhesion of the coating and improve its ability to resist corrosion. This heating process can ensure that the coating forms a more solid covering layer on the surface of the pipe fittings, thereby enhancing the overall performance of the coating.

[0003] During the cooling stage of pipe fittings after heating and spraying, there is a challenge involving technical considerations. Specifically, the condensation of water vapor from the air on the inner wall of the pipe may cause uneven cooling. This uneven cooling effect may lead to structural instability of the coating, manifested as deformation, cracking and reduced adhesion. These problems may eventually cause even more serious effects - complete loss of coating function or damage to the inside of the pipe due to uneven stress distribution.

[0004] Therefore, a steel pipe inner wall desiccant device is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a device for removing water vapor from the inner wall of a steel pipe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The device for removing moisture from the inner wall of a steel pipe comprises a hot air return flow path, wherein a notch is provided on the loop of the hot air return flow path, wherein the notch is used for a detachable steel pipe, and the spacing of the notch is adjustable.

[0008] Preferably, the hot air return flow path includes a heating module, an air guide module connected thereto, an air outlet manifold connected to the air guide module, and an air intake manifold connected to the heating module, the air intake manifold and the air outlet manifold are respectively connected to an air intake portion and an air outlet portion, and the gap is formed between the air intake portion and the air outlet portion.

[0009] Preferably, the number of the air inlet parts and the air outlet parts is the same and both are plural.

[0010] Preferably, the heating module is an air heater.

[0011] Preferably, the air guiding module is an air extraction pump, and the air extraction pump is connected to the heating module through a connecting pipe.

[0012] Preferably, the air intake portion includes an intake branch pipe connected to the intake main pipe, a solenoid valve connected to the intake branch pipe, and a shrinking soft rubber head fixedly connected to one end of the intake branch pipe away from the intake main pipe.

[0013] Preferably, the air outlet portion includes a bellows connected to the main air outlet pipe, an air outlet branch pipe connected to the bellows, and a shrinking soft rubber head fixedly connected to one end of the air outlet branch pipe away from the bellows.

[0014] The utility model has the following beneficial effects:

[0015] The utility model can efficiently remove a large amount of water vapor from the inner wall of the steel pipe. When in use, an air inlet branch pipe equipped with a shrinking soft rubber head is put on one end of the steel pipe to seal the pipe end. Then, the same shrinking soft rubber head on the air outlet branch pipe at the other end is adjusted to be inserted into the other end. The adjustable bellows is adapted to steel pipes of different lengths to achieve double-end closure. The air heating component is started to heat the incoming air, and the hot air is circulated through the vacuum pump to form a closed-loop hot air circuit. If the air inlet and outlet parts exceed the number of steel pipes, the solenoid valve is used to close the excess branch pipes to ensure that the hot air does not leak and is used efficiently. At the same time, the air outlet part can let air in from the outside to ensure that the air humidity in the circuit does not rise. In this way, the heated air enters the steel pipe through the main pipe and the branch pipes, takes away the water vapor, and then circulates back to the heater through the air outlet branch pipe, the bellows, the vacuum pump and the connecting pipe to continuously complete the dehumidification operation in the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0019] 1. Air heater; 2. Air intake main pipe; 3. Air intake branch pipe; 4. Solenoid valve; 5. Shrinking soft rubber head; 6. Connecting pipe; 7. Air pump; 8. Air outlet main pipe; 9. Bellows; 10. Air outlet branch pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Steel pipe inner wall degassing device, such as Figure 1 As shown, it includes a hot air return flow path, there is a notch on the loop of the hot air return flow path, the notch is used for a detachable steel pipe, and the spacing of the notch is adjustable, the hot air return flow path includes a heating module, an air guide module connected thereto, an air outlet main pipe 8 connected to the air guide module, and an air intake main pipe 2 connected to the heating module, the air intake main pipe 2 and the air outlet main pipe 8 are respectively connected to an air intake part and an air outlet part, the notch is formed between the air intake part and the air outlet part, and the number of the air intake parts and the air outlet parts is the same and both are several.

[0022] The heating module is an air heater 1, the air guide module is an air pump 7, and the air pump 7 is connected to the air heater 1 through a connecting pipe 6. Figure 2 As shown, the air intake unit includes an air intake branch pipe 3 connected to the air intake manifold 2, a solenoid valve 4 connected to the air intake branch pipe 3, and a shrinking soft rubber head 5 fixedly connected to the end of the air intake branch pipe 3 away from the air intake manifold 2, as shown in FIG. Figure 3 As shown, the air outlet portion includes a bellows 9 connected to the air outlet main pipe 8, an air outlet branch pipe 10 connected to the bellows 9, and a shrinking soft rubber head 5 fixedly connected to the end of the air outlet branch pipe 10 away from the bellows 9, wherein the shrinking soft rubber head 5 is made of fluororubber, and its structure includes a disc portion and a frustum portion integrally formed therewith, the disc portion of the shrinking soft rubber head 5 is used for fixed connection with the air inlet branch pipe 3 and the air outlet branch pipe 10, and the frustum portion of the shrinking soft rubber head 5 is used for inserting into the steel pipe, and its inclined surface plays an effective guiding effect, so that the shrinking soft rubber head 5 can be subjected to the force in the circumferential direction, thereby shrinking its deformation and adapting to the diameter of the steel pipe.

[0023] When the utility model removes the water vapor from the inner wall of a batch of steel pipes, it is only necessary to sleeve one end of the steel pipe on the outer side of the shrinking soft rubber head 5 on the air inlet branch pipe 3, so that the shrinking soft rubber head 5 can seal one end of the steel pipe, and then pull the air outlet branch pipe 10 on the other side, so that the corrugated tube 9 can be extended or shortened, so as to adapt to the length of the steel pipe, so that the shrinking soft rubber head 5 on the air outlet branch pipe 10 can be inserted into the other end of the steel pipe, and the two ends of the steel pipe are sealed, and then the heating module, that is, the air heating component, is started, so that the air entering from the outside can be heated, and under the operation of the air extraction pump 7, the air can circulate. To form a complete hot air reflux flow path, and if the number of air inlets and air outlets is greater than the number of steel pipes, the air inlet branch pipe 3 can be closed by the solenoid valve 4, so that there will be no excess hot air discharged into the outside air, so that the hot air can pass through the air inlet main pipe 2 from the air heater 1, be distributed through the air inlet branch pipe 3, and then enter the steel pipe, taking away the water vapor on its inner wall, and then pass through the air outlet branch pipe 10 and the bellows 9, the vacuum pump 7 and the connecting pipe 6 in sequence, and enter the air heater 1 again, so as to complete the removal of water vapor on the inner wall of the steel pipe in batches, with extremely high working efficiency.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for removing moisture from the inner wall of a steel pipe, characterized in that: The invention comprises a hot air return flow path, wherein a notch is provided on the loop of the hot air return flow path, wherein the notch is used for a detachable steel pipe, and the spacing of the notch is adjustable; the hot air return flow path comprises a heating module, an air guide module connected thereto, an air outlet main pipe (8) connected to the air guide module, and an air intake main pipe (2) connected to the heating module, wherein the air intake main pipe (2) and the air outlet main pipe (8) are respectively connected to an air intake portion and an air outlet portion, and the notch is between the air intake portion and the air outlet portion. The air intake section comprises an air intake branch pipe (3) connected to an air intake main pipe (2), a solenoid valve (4) connected to the air intake branch pipe (3), and a shrinking soft rubber head (5) fixedly connected to one end of the air intake branch pipe (3) away from the air intake main pipe (2); the air outlet section comprises a bellows (9) connected to an air outlet main pipe (8), an air outlet branch pipe (10) connected to the bellows (9), and a shrinking soft rubber head (5) fixedly connected to one end of the air outlet branch pipe (10) away from the bellows (9).

2. The steel pipe inner wall dehumidification device according to claim 1, characterized in that: The number of the air inlet parts and the air outlet parts is the same and both are multiple.

3. The device for removing moisture from the inner wall of a steel pipe according to claim 1, characterized in that: The heating module is an air heater (1).

4. The device for removing moisture from the inner wall of a steel pipe according to claim 1, characterized in that: The air guiding module is an air extraction pump (7), and the air extraction pump (7) is connected to the heating module via a connecting pipe (6).

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