CN111238176A - A centrifugal dehydration type underwater partial drying air chamber and drying process - Google Patents

Abstract

The invention discloses a centrifugal dehydration type underwater partial drying air chamber, which comprises a base for placing workpieces, a central pipeline arranged above the base, a dehydration pipeline, an external culvert and a driving mechanism for driving the rotation of the dehydration pipeline. The present invention is provided with a central pipeline for introducing high-pressure gas and a rotating dehydration pipeline, the central air chamber is used as a centrifugal drainage center through the pressure gas, the high-speed rotating porous dehydration pipeline forms centrifugal force to discharge water, and the outer rotating water flow forms a local negative pressure belt The moisture in the dehydration layer can be removed, and finally, a high-temperature inert gas can be introduced into the central air chamber to dry and protect the workpiece surface and the central air chamber, thereby ensuring the drying and stability of the underwater air chamber.

Description

A centrifugal dehydration type underwater partial drying air chamber and drying process

technical field

The invention relates to a centrifugal dehydration type underwater partial drying air chamber for thermal processing of underwater metal parts and a drying process.

Background technique

With the vigorous development of my country in the fields of deep sea and nuclear power, the installation, inspection, maintenance and replacement of underwater components will become the main problems we will face in the future. Due to the inherent characteristics of water environment impurities, pressure, heat absorption, decomposition of water molecules, etc., inspection, welding, thermal spraying, and cutting of underwater components have long been a difficult problem and a technical bottleneck that must be solved in this field. In recent years, the proposal of underwater local dry method provides a new idea for solving this problem. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a drying air chamber and drying process for forming local stability in underwater environment.

In order to achieve the above purpose, the technical scheme adopted in the present invention is: a centrifugal dehydration type underwater partial drying air chamber, comprising a base for placing workpieces, a central pipe arranged above the base, a dewatering pipe, an external culvert and a drive. The driving mechanism for the rotation of the dehydration pipeline, the upper part of the central pipeline is provided with a high-pressure gas inlet, the pipe wall of the dehydration pipeline is provided with a plurality of drainage holes connecting the inner and outer sides of the dehydration pipeline, and the outer culvert has a A plurality of channels for guiding gas to rotate, the dehydration pipeline is concentric with the central pipeline and is rotatably arranged between the central pipeline and the base, and the outer culvert is sleeved outside the central pipeline and the dehydration pipeline.

Preferably, the base has a support body on which the workpiece is placed, and the support body is a truncated cone or a truncated cylinder.

Further preferably, the support body is arranged in a groove on the surface of the base.

Further preferably, the outer peripheral wall of the groove is circular and the inner diameter of the groove is matched with the inner diameter of the dehydration pipe, and the lower end of the dehydration pipe is arranged in the groove.

Preferably, the driving mechanism is arranged on the inner side of the central pipe or on the base.

Preferably, there is a gap between the outer culvert and the central pipeline, and there is a gap between the dewatering pipelines.

Preferably, the dehydration pipe is a transparent pipe made of transparent material.

Preferably, the channels in the outer culvert are arranged on the inner wall of the pipeline by rotating clockwise or counterclockwise in the axial direction.

A drying process of the above-mentioned centrifugal dehydration type underwater partial drying air chamber, comprising the following steps:

(1) Place the workpiece on the base, and install the central pipeline, the dewatering pipeline and the external culvert;

(2) Introduce the pressure gas higher than the water pressure to the high-pressure gas inlet of the central pipeline, and discharge the liquid in the central pipeline and the dehydration pipeline to form a central gas chamber;

(3) The driving mechanism drives the dehydration pipeline to rotate, and the water in the central air chamber is brought out of the dehydration pipeline from the drainage holes on the dehydration pipeline through centrifugal force;

(4) Heating the pressurized gas introduced into the central pipeline, thereby drying the air in the central gas chamber.

Preferably, pressurized gas is introduced into the outer culvert to form a rotating water flow around the dehydration layer at the outlet.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

Because the present invention is provided with a central pipe for feeding high-pressure gas and a rotating dehydration pipe, the central air chamber is used as a centrifugal drainage center through the pressurized gas, the high-speed rotating porous dehydration pipe forms centrifugal force to discharge water, and the outer rotating water flow forms a local negative pressure The moisture in the dehydration layer is taken away, and finally, a high-temperature inert gas can be introduced into the central air chamber to dry and protect the workpiece surface and the central air chamber, thereby ensuring the drying and stability of the underwater air chamber. Compared with the prior art, the present invention has the advantages of strong adaptability, practical stability, small volume, flexible operation and controllable air chamber dryness.

Description of drawings

Accompanying drawing 1 is the sectional schematic diagram of the present invention;

Accompanying drawing 2 is the top view schematic diagram of base;

Accompanying drawing 3 is the top view schematic diagram of external culvert;

Figure 4 is a schematic diagram of the use state of the present invention.

In the above drawings: 1, base; 11, support body; 12, groove; 13, base suction cup; 2, workpiece; 3, dehydration pipeline; 31, drainage hole; 4, central pipeline; 5, external culvert; 51, channel; 6. Central air chamber.

Detailed ways

The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings:

Referring to Figures 1-4, a centrifugal dehydration type underwater partial drying air chamber includes a base 1 for placing a workpiece 2, a central pipe 4 arranged above the base 1, a dehydration pipe 3, and an external culvert 5 And the drive mechanism (not shown in the figure) that drives the rotation of the dehydration pipeline 3, the upper part of the central pipeline 4 is provided with a high-pressure gas inlet, and the wall of the dehydration pipeline 3 is provided with a plurality of connections between the inside and outside of the dehydration pipeline 3 The drainage holes 31 on both sides, the outer culvert 5 has a plurality of channels 51 for guiding gas to rotate, the dehydration pipe 3 is concentric with the central pipe 4 and is rotatably arranged between the central pipe 4 and the base 1, The outer culvert 5 is sleeved outside the central pipeline 4 and the dehydration pipeline 3 .

Specifically, the pressure gas sufficient to overcome the water pressure is introduced from the high-pressure gas inlet of the central pipe 4 to discharge the liquid in the central pipe 4 and the dehydration pipe 3, and then the dehydration pipe 3 is driven by the driving mechanism to rotate at a high speed, and the center is driven by centrifugal force. The moisture in the gas chamber 6 is brought out of the dehydration pipe 3 from the drainage hole 31 on the dehydration pipe 3, and then high-temperature pressure gas is introduced from the high-pressure gas inlet for drying the workpiece 2, and finally the inert gas is introduced from the high-pressure gas inlet. The protective gas makes the environment in the central gas chamber 6 suitable for welding and other processes.

In this embodiment, the base 1 has a support body 11 on which the workpiece 2 is placed, the support body 11 is a truncated cone, and the workpiece 2 is placed on the top of the truncated cone. The support body 11 is arranged in the groove 12 on the surface of the base 1 . The outer peripheral wall of the groove 12 is circular and its inner diameter matches the inner diameter of the dehydration pipe 3 , and the lower end of the dehydration pipe 3 is arranged in the groove 12 . The truncated cone-shaped support body 11 can quickly discharge water, and the groove 12 can facilitate the installation of the dehydration pipeline 3 . In addition, the lower part of the base 1 is also provided with a base suction cup 13 which is convenient for fixing.

The driving mechanism is arranged on the inner side of the central pipe 4 or on the base 1 . There is a gap between the outer culvert 5 and the central pipeline 4 , and there is a gap between the outer culvert 5 and the dehydration pipeline 3 .

The dehydration pipe 3 is a transparent pipe made of transparent material. Therefore, it is convenient to observe the workpiece 2 in the dewatering pipeline 3 from the outside.

In addition, the channel 51 in the outer culvert 5 is arranged on the inner wall of the pipeline counterclockwise along the axis direction, and the pressure gas is introduced into the channel 51 from the upper end of the outer culvert 5, and then the air flow spirals along the channel 51 from the outer culvert. The outlet of the outlet channel 51 at the lower end is discharged, and it is presumed that the water flow forms a rotating water flow around the dehydration pipe 3, and the rotating water flow will take away the water coming out of the dehydration pipe 3.

The drying process of the centrifugal dehydration type underwater partial drying air chamber of the present embodiment includes the following steps:

(1) Place the workpiece 2 on the base 1, and install the central pipeline 4, the dehydration pipeline 3 and the external culvert 5;

(2) Passing pressure gas higher than the water pressure into the high-pressure gas inlet of the central pipe 4, and discharging the liquid in the central pipe 4 and the dehydration pipe 3 to form the central gas chamber 6;

(3) The drive mechanism drives the dehydration pipe 3 to rotate, and the water in the central air chamber 6 is brought out of the dehydration pipe 3 from the drainage hole 31 on the dehydration pipe 3 by centrifugal force;

(4) The pressure gas introduced into the external culvert 5 forms a rotating water flow around the dehydration layer at the outlet.

(5) Heating the pressurized gas introduced into the central pipeline 4 to dry the air in the central air chamber 6 .

Since this embodiment is provided with a central pipe 4 for feeding high-pressure gas and a rotating dehydration pipe 3, the central gas chamber 6 is used as a centrifugal drainage center through the pressure gas, and the high-speed rotating porous dehydration pipe 3 forms centrifugal force to discharge water, and the outer layer rotates The water flow forms a local negative pressure to take away the moisture of the dehydration layer, and finally, a high-temperature inert gas can be introduced into the central air chamber 6 to dry and protect the surface of the workpiece 2 and the central air chamber 6, thereby ensuring the drying and stability of the underwater air chamber. .

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a centrifugal dehydration formula is local drying air chamber under water which characterized in that: the automatic dewatering device comprises a base used for placing a workpiece, a central pipeline, a dewatering pipeline, an external culvert pipe and a driving mechanism, wherein the central pipeline, the dewatering pipeline, the external culvert pipe and the driving mechanism are arranged above the base, the driving mechanism drives the dewatering pipeline to rotate, a high-pressure gas inlet is formed in the upper portion of the central pipeline, a plurality of water discharging holes communicated with the inner side and the outer side of the dewatering pipeline are formed in the pipe wall of the dewatering pipeline, a plurality of channels for guiding gas to rotate are formed in the external culvert pipe, the dewatering pipeline and the central pipeline are concentric and rotatably arranged between the central pipeline and the base, and the external culvert pipe is sleeved outside the central pipeline and.

2. The spin-drying underwater localized drying plenum of claim 1, wherein: the base is provided with a supporting body for placing the workpiece, and the supporting body is a cone table or a cylindrical table.

3. The spin-drying underwater localized drying plenum of claim 2, wherein: the support body is arranged in a groove on the surface of the base.

4. A spin-drying underwater partial drying plenum as claimed in claim 3, wherein: the periphery wall of recess is circular and its internal diameter with the internal diameter of dehydration pipeline mutually supports, the lower extreme setting of dehydration pipeline is in the recess.

5. The spin-drying underwater localized drying plenum of claim 1, wherein: the driving mechanism is arranged on the inner side of the central pipeline or the base.

6. The spin-drying underwater localized drying plenum of claim 1, wherein: a gap is arranged between the external culvert pipe and the central pipeline, and a gap is arranged between the dewatering pipelines.

7. The spin-drying underwater localized drying plenum of claim 1, wherein: the dewatering pipeline is a transparent pipeline made of transparent materials.

8. The spin-drying underwater localized drying plenum of claim 1, wherein: the channels in the external culvert are arranged downwards along the axial direction in a clockwise or anticlockwise rotating manner on the inner wall of the pipeline.

9. A process for drying a spin-drying underwater partial drying plenum as claimed in any one of claims 1 to 8, comprising the steps of:

(1) placing a workpiece on the base and installing the central pipe, the dewatering pipe and the outer culvert;

(2) introducing pressure gas higher than water pressure into a high-pressure gas inlet of the central pipeline, and discharging liquid in the central pipeline and the dewatering pipeline to form a central gas chamber;

(3) the driving mechanism drives the dehydration pipeline to rotate, and the water in the central air chamber is taken out of the dehydration pipeline from the water drainage hole on the dehydration pipeline through centrifugal force;

(4) the pressurized gas introduced into the central conduit is heated to dry the air in the central air chamber.

10. The process of claim 9, wherein the drying chamber comprises: the pressure gas is introduced into the external culvert pipe, and forms rotating water flow around the dehydration layer at the outlet.

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