CN209880291U

CN209880291U - Pipe-in-pipe water-cooled resistor

Info

Publication number: CN209880291U
Application number: CN201920481376.7U
Authority: CN
Inventors: 蒋修洋; 肖邓; 韩雷; 黄赫
Original assignee: Hunan Fullde Electric Co Ltd
Current assignee: Hunan Fullde Electric Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2019-12-31
Anticipated expiration: 2029-04-10

Abstract

The utility model provides a pipe-in-pipe water-cooling resistor, include hollow outer tube and establish at the inside resistance wire of outer tube, still including installing at the inside inner tube of outer tube, the inside cavity of inner tube supplies water to flow through, the resistance wire encircles the inner tube, leaves the space that supplies water to flow through between inner tube and the outer tube. Because the inner pipe is hollow and water flows through, and a gap for water to flow through is reserved between the inner pipe and the outer pipe, the resistance wires surrounding the inner pipe and the outer pipe can be cooled and radiated by the water inside the inner pipe and between the two pipes, so that the pipe-in-pipe water-cooled resistor has good heat radiation performance, and the heat radiation performance is improved by about 2-3 times compared with the common single-pipe water-cooled resistor.

Description

Pipe-in-pipe water-cooled resistor

Technical Field

The utility model relates to a water-cooled resistor technical field, in particular to pipe-in-pipe water-cooled resistor.

Background

The inside heat pipe that is equipped with usually of current single tube water-cooled resistor, treat that radiating resistance wire establishes in this heat pipe, and the resistance wire can produce the heat at the during operation, and this heat is past the transmission outward through the heat pipe for the heat conduction outer wall of flowing through behind the radiating rivers income water-cooled resistor, thereby make the heat that the resistance wire produced to be taken away by the water, realize the heat dissipation. Because only the outer wall of the heat conduction pipe has water flowing through, when the resistance wire works under high power, the heat generated by the resistance wire can not be taken away in time, and therefore the heat dissipation performance of the single-tube water-cooled resistor is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a water-cooling resistor that heat dispersion is good.

In order to solve the technical problem, the utility model provides a pipe-in-pipe water-cooling resistor, include hollow outer tube and establish at the inside resistance wire of outer tube, still including installing the inside inner tube in the outer tube, the inner tube is encircleed to the resistance wire, the inside cavity of inner tube supplies water to flow through, leaves the space that supplies water to flow through between inner tube and the outer tube.

Preferably, the both ends of outer tube are equipped with outer tube water inlet and outer tube delivery port respectively, the both ends of inner tube are equipped with the inner tube water inlet and the inner tube delivery port that pass the outer tube respectively, the outer tube water inlet is established at first end with the inner tube delivery port, the outer tube delivery port is established at the second end with the inner tube water inlet.

Preferably, two ends of the outer tube are respectively provided with a resistance leading-out rod, and the two resistance leading-out rods are respectively connected with two ends of the resistance wire.

Preferably, the resistor lead-out rod comprises a ceramic piece, and the ceramic piece is arranged between the resistor lead-out rod and the outer tube.

Preferably, the porcelain is provided between the resistance lead-out rod and the outer tube in a radial direction.

Preferably, an encapsulation layer is arranged outside the inner tube, and the resistance wire is encapsulated by the encapsulation layer.

Preferably, the packaging layer is made of magnesium oxide powder and epoxy resin.

The utility model discloses following beneficial effect has: because the inner pipe is hollow and water flows through, and a gap for water to flow through is reserved between the inner pipe and the outer pipe, the resistance wire surrounding the outer pipe of the inner pipe can be cooled and radiated by the water in the inner pipe and the water between the two pipes at the same time, so that the heat radiation performance of the pipe-in-pipe water-cooled resistor is good, and the heat radiation performance of the pipe-in-pipe water-cooled resistor is improved by about 2-3 times compared with that of a common.

Drawings

FIG. 1 is a schematic structural diagram of a resistance tube inspection station;

FIG. 2 is a schematic view of the internal structure of the resistance tube inspection station;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 5 is a sectional view taken along line C-C of fig. 1.

Description of reference numerals: 1-an outer tube; 2-a resistance leading-out rod; 3-a porcelain piece; 4-water inlet of outer tube; 5-water outlet of the outer pipe; 6-water inlet of inner tube; 7-water outlet of the inner pipe; 8-inner tube; 9-resistance wire; 10-an encapsulation layer; 11-voids.

Detailed Description

As shown in fig. 1, the tube-in-tube water-cooled resistor includes an outer tube 1, two ends of the outer tube 1 are respectively provided with a resistance leading-out rod 2, a porcelain piece 3 is arranged between each resistance leading-out rod 2 and the outer tube 1, and the porcelain piece 3 is arranged between the resistance leading-out rod 2 and the outer tube 1 in the radial direction, so that the resistance leading-out rod 2 and the outer tube 1 are radially insulated from each other. As shown in fig. 2, an inner tube 8 and a spiral resistance wire 9 surrounding the inner tube 8 are arranged inside the tube-in-tube water-cooled resistor, two ends of the resistance wire 9 are respectively connected with the resistance leading-out rods 2 at two ends of the outer tube 1, and the resistance leading-out rods 2 are connected with an external circuit. An encapsulation layer 10 is arranged outside the inner tube 8, the resistance wire 9 is encapsulated at the periphery of the inner tube 8 by the encapsulation layer 10, a gap 11 for water to flow through is reserved between the encapsulation layer 10 and the outer tube 1, and the encapsulation layer 10 is made of magnesium oxide powder and epoxy resin, so that the encapsulation layer 10 can conduct heat and has good heat resistance. As can be seen from fig. 1, the side wall of the outer tube 1 is provided with an outer tube water inlet 4, an outer tube water outlet 5, an inner tube water inlet 6 and an inner tube water outlet 7, and as can be seen from fig. 3 and 5, the gap 11 is communicated with the outside after the outer tube water inlet 4 and the outer tube water outlet 5 pass through the outer tube 1, and as can be seen from fig. 4 and 5, the inner tube water inlet 6 and the inner tube water outlet 7 sequentially pass through the outer tube 1, the gap 11, the encapsulating layer 10 and the inner tube 8, and then the inside of the inner tube 8 is communicated with.

When the pipe-in-pipe water-cooled resistor works, the resistance wire 9 works to generate heat, water flows into the gap 11 from the outer pipe water inlet 4 and flows out from the outer pipe water outlet 5, and water flows into the inner pipe 8 from the inner pipe water inlet 6 and flows out from the inner pipe water outlet 7. The water flowing through the gap 11 and the inner part of the inner tube 8 takes away the heat generated by the resistance wire 9, so that the heat dissipation is effectively performed, and compared with a common single-tube water-cooled resistor, the heat dissipation performance of the water-cooled resistor in the tube-in-tube embodiment is improved by about 2-3 times.

After water flows through the gap 11 and the inner part of the inner tube 8 for heat dissipation and then flows out, the temperature of the water is increased relative to the temperature of the water flowing into the gap 11 and the inner part of the inner tube 8 because the water can absorb heat generated during the operation of the resistance wire 9. If the outer tube water inlet 4 and the inner tube water inlet 6 are both arranged at the first end of the water-cooled resistor, and the outer tube water outlet 5 and the inner tube water outlet 7 are both arranged at the second end of the water-cooled resistor, the second end of the water-cooled resistor may have poor heat dissipation due to the high temperature of the water flowing out of the outer tube water outlet 5 and the inner tube water outlet 7. In this embodiment, the outer tube water inlet 4 and the inner tube water outlet 7 are both disposed at the first end of the water-cooled resistor, and the outer tube water outlet 5 and the inner tube water inlet 6 are both disposed at the second end of the water-cooled resistor, so that water with low temperature flows into both ends of the water-cooled resistor, thereby avoiding poor heat dissipation at any end of the water-cooled resistor, and enabling the whole heat dissipation of the water-cooled resistor to be uniform.

Claims

1. The utility model provides a pipe-in-pipe water-cooled resistor, includes hollow outer tube (1) and establishes resistance wire (9) in outer tube (1) inside, its characterized in that: the resistance wire (9) surrounds the inner pipe (8), water flows through the hollow inner part of the inner pipe (8), and a gap for water to flow through is reserved between the inner pipe (8) and the outer pipe (1).

2. The pipe-in-pipe water-cooled resistor of claim 1, wherein: the both ends of outer tube (1) are equipped with outer tube water inlet (4) and outer tube delivery port (5) respectively, the both ends of inner tube (8) are equipped with inner tube water inlet (6) and inner tube delivery port (7) that pass outer tube (1) respectively, establish first end in outer tube water inlet (4) and inner tube delivery port (7), establish at the second end in outer tube delivery port (5) and inner tube water inlet (6).

3. The pipe-in-pipe water-cooled resistor of claim 1, wherein: two ends of the outer tube (1) are respectively provided with a resistance leading-out rod (2), and the two resistance leading-out rods (2) are respectively connected with two ends of the resistance wire (9).

4. The pipe-in-pipe water-cooled resistor of claim 3, wherein: the resistor lead-out rod comprises a porcelain piece (3), wherein the porcelain piece (3) is arranged between the resistor lead-out rod (2) and an outer tube (1).

5. The pipe-in-pipe water-cooled resistor of claim 4, wherein: the porcelain piece (3) is arranged between the resistance leading-out rod (2) and the outer tube (1) in the radial direction.

6. The pipe-in-pipe water-cooled resistor of claim 1, wherein: and an encapsulation layer (10) is arranged outside the inner tube (8), and the resistance wire (9) is encapsulated by the encapsulation layer (10).

7. The pipe-in-pipe water-cooled resistor of claim 6, wherein: the packaging layer (10) is made of magnesium oxide powder and epoxy resin.