Sodium pipeline penetration piece auxiliary heating device

Abstract

The utility model belongs to the technical field of sodium pipeline penetration piece heating, and particularly relates to an auxiliary heating device for a sodium pipeline penetration piece, which comprises a plurality of electric heating wires and a plurality of conduits, the conduits are hollow cylindrical structures, the electric heating wires are arranged in the conduits, and the conduits are peripherally arranged on the outer wall of the sodium pipeline penetration piece. The device uniformly heats the sodium pipeline penetration piece through the electric heating wire. According to the device, the conduit is mounted on the sodium pipeline penetration piece, so that the problem that the electric heating wire is difficult to mount at the penetration piece is solved. The guide pipe is made of 304 stainless steel, the contact position of the guide pipe and the pipeline is ground flat, the guide pipe is spot-welded on the outer wall of the pipeline through a pressing sheet, and the heat transfer efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sodium pipeline penetration heating, in particular to an auxiliary heating device for sodium pipeline penetration. Background Art

[0002] Sodium-cooled fast reactors use metallic sodium as a coolant, which has a melting point of 97.72°C. To maintain a fluid state within the sodium pipelines, auxiliary heating devices are required, typically with an external insulation layer. Sodium pipeline penetrations are required when the sodium pipelines pass through walls. However, these are located within the confined space within the wall, making installation within the penetration holes impractical and unsuitable for heating devices.

[0003] In the prior art, after the sodium pipeline is installed, the electric heating wire is typically secured to the outer wall of the sodium pipeline penetration with copper wire. The electric heating wire is then wrapped with stainless steel mesh and secured with stainless steel tie wraps. The electric heating wire and the sodium pipeline penetration are then pushed into the hole, and the hole is finally filled with insulation material. This solution prevents the electric heating wire from being securely installed and evenly distributed inside the hole, hindering the insulation of the sodium pipeline. Furthermore, if the electric heating wire fails, it is inconvenient to remove and repair it. Summary of the Invention

[0004] The utility model provides an auxiliary heating device for a sodium pipeline penetration piece, which is used to solve the problems of uneven heating and inconvenient assembly and disassembly of the sodium pipeline penetration piece heating device in the prior art.

[0005] The technical solution of this utility model:

[0006] The utility model proposes an auxiliary heating device for a sodium pipeline penetration piece, which comprises a plurality of electric heating wires and a plurality of conduits. The conduits are hollow cylindrical structures, and the electric heating wires are arranged inside the conduits. The plurality of conduits are evenly arranged along the circumferential direction on the outer wall of the sodium pipeline penetration piece. The device evenly heats the sodium pipeline penetration piece through the electric heating wires.

[0007] In some embodiments, the number of the conduits is 8, and the 8 conduits are evenly distributed circumferentially on the outer wall of the sodium conduit penetration piece.

[0008] In some embodiments, the contact position between the conduit and the sodium pipeline penetration piece is ground flat to increase the contact area and heat transfer efficiency between the conduit and the sodium pipeline penetration piece.

[0009] In some embodiments, the catheter matches the diameter of the electric heating wire, and the inner diameter of the catheter is 8 mm.

[0010] In some embodiments, the conduit is installed on the outer wall of the sodium pipeline penetration piece by welding, and the conduit is fixed to the sodium pipeline penetration piece by pressing sheet spot welding every 100 mm.

[0011] In some embodiments, the catheter is made of stainless steel.

[0012] Beneficial effects of the utility model:

[0013] This utility model proposes an auxiliary heating device for sodium pipeline penetrations. By installing a conduit on the sodium pipeline penetration, this device solves the problem of difficult installation and uneven distribution of electric heating wires at the penetration. The conduit is made of 304 stainless steel, and the contact area between the conduit and the sodium pipeline penetration is ground flat. The conduit is spot-welded to the outer wall of the pipeline via a pressing plate, increasing heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a side view of an auxiliary heating device for a sodium pipeline penetration according to the present invention;

[0015] Figure 2 This is a front view of an auxiliary heating device for a sodium pipeline penetration according to the present invention;

[0016] Description of reference numerals:

[0017] 1. Sodium pipe penetration; 2. Conduit; 3. Electric heating wire. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 2 As shown, the present invention proposes an auxiliary heating device for a sodium pipeline penetration. The device comprises eight electric heating wires 3 and eight conduits 2. The conduits 2 are hollow cylindrical structures, each containing an electric heating wire 3. The diameters of the conduits 2 and the electric heating wires 3 match, and the inner diameter of the conduits 2 is approximately 8 mm. The eight conduits 2 are evenly distributed circumferentially around the outer wall of the sodium pipeline penetration 1. The device uniformly heats the sodium pipeline penetration 1 through the electric heating wires 3.

[0020] In some embodiments, conduit 2 is made of 304 stainless steel and is welded to the outer wall of the sodium pipeline penetration 1. Conduit 2 is spot-welded to the sodium pipeline penetration 1 using stainless steel pressing plates at intervals of 100 mm. The contact area between conduit 2 and the sodium pipeline penetration 1 is ground flat to increase the contact area and heat transfer efficiency.

[0021] The utility model proposes an auxiliary heating device for a sodium pipeline penetration. When using the device, the length of the conduit 2 is first determined according to the length of the sodium pipeline penetration 1. The inner diameter of the conduit 2 is about 8 mm, which matches the diameter of the electric heating wire 3, and the side in contact with the pipeline is ground flat.

[0022] Then, eight conduits 2 are evenly installed on the outer wall of the sodium pipeline penetration piece 1 along the circumference of the pipeline and fixed with stainless steel pressing sheets by spot welding every 100 mm.

[0023] Finally, the sodium pipe is installed into the hole of the penetration piece, and the electric heating wire 3 is inserted into the conduit 2 .

[0024] This utility model proposes an auxiliary heating device for sodium pipeline penetrations. By installing a conduit 2 on the sodium pipeline penetration, this device solves the problem of difficult installation and uneven distribution of the electric heating wire 3 at the penetration location. The conduit 2 is made of 304 stainless steel. The contact area between the conduit 2 and the sodium pipeline penetration 1 is ground flat. The conduit 2 is spot-welded to the outer wall of the sodium pipeline penetration 1 via a pressing plate, increasing heat transfer efficiency.

[0025] The embodiments of the present invention are described in detail above. The present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A sodium pipeline penetration auxiliary heating device, characterized in that: The device comprises a plurality of electric heating wires (3) and a plurality of conduits (2); the conduits (2) are hollow cylindrical structures; the electric heating wires (3) are arranged inside the conduits (2); the plurality of conduits (2) are evenly arranged along the circumferential direction on the outer wall of a sodium pipeline penetration piece (1); and the device evenly heats the sodium pipeline penetration piece (1) through the electric heating wires (3).

2. The sodium pipeline penetration auxiliary heating device according to claim 1, characterized in that: The number of the conduits (2) is 8, and the 8 conduits (2) are evenly distributed circumferentially on the outer wall of the sodium pipeline penetration piece (1).

3. The sodium pipeline penetration auxiliary heating device according to claim 2, characterized in that: The contact position between the conduit (2) and the sodium pipeline penetration piece (1) is ground flat, thereby increasing the contact area and heat transfer efficiency between the conduit (2) and the sodium pipeline penetration piece (1).

4. The sodium pipeline penetration auxiliary heating device according to claim 1, characterized in that: The diameter of the catheter (2) matches that of the electric heating wire (3), and the inner diameter of the catheter (2) is 8 mm.

5. The sodium pipeline penetration auxiliary heating device according to claim 1, characterized in that: The conduit (2) is arranged on the outer wall of the sodium pipeline penetration piece (1) by welding, and the conduit (2) is fixed to the sodium pipeline penetration piece (1) by pressing sheet spot welding every 100 mm.

6. The auxiliary heating device for a sodium pipeline penetration piece (1) according to claim 1, characterized in that: The conduit (2) is made of stainless steel.

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