JPS6015281Y2 - water cooled resistor - Google Patents

Description

[Detailed description of the invention] This invention relates to a water-cooled resistor that uses water to cool the heat generated from a resistance wire.

Conventional resistors of this type consist of a resistance wire wrapped around a cylindrical water supply made of insulating material such as porcelain.
The heat emitted from the resistance wire is actively cooled by the water flowing inside the water passer, but the heat conductivity of the water passer is relatively low and cooling is limited, so water cooling for high voltage thyristor converters in DC power transmission, for example, is not possible. Resistors with even greater cooling effects are expected.

The purpose of this invention is to improve cooling efficiency, to allow a plurality of resistive elements to be installed together, and to shorten the lead wires of each resistive element.

Next, an embodiment of this invention will be explained with reference to the drawings.

The water passage device 1 is made of a stainless steel plate in the shape of a rectangular cube, with flat parts provided on both upper and lower sides, a partition wall 2 provided in the middle of the hollow part, and left and right spaces 3.4 at the rear ends of the partition wall 2. A water inlet 6 opening from one of the spaces 3 at the front end takes the form of a passage 5 that communicates with the water.
and a lower water outlet opening from the other space 4, and nozzles 8 and 9 are attached to the inlet 6 and the outlet lower, and the following thin surface shape is provided on the upper and lower flat parts of this water passing device 1. A collective resistor 10.10 is attached thereto.

The collective resistor 10 includes a resistance element 1 in which a resistance wire 11 is wound around a heat-resistant insulating sheet 16 made of silicon glass cloth.
2, a plurality of resistance elements 12 are arranged in a row between upper and lower covering sheets 13, 13, and both sheets 13, 13 are bonded together by thermocompression to fix the three together.

The covering sheet 13.13 is suitably made of unvulcanized silicone rubber;
That is, it is made of a material with excellent water resistance, heat resistance, flexibility, and chemical resistance, and glass fiber 17 is added to the middle layer of both sheets 13 and 13 to increase mechanical strength and strengthen protection of the resistance element 12. is preferred.

The flexibility is required to accommodate the expansion and contraction of the water passage device 1 and to prevent the sheet 13 from peeling off.

Further, the resistance element 12 and the resistance wire 11 may be provided not only by simply wrapping them around each other, but also by sewing them together with a heat-resistant fiber thread onto the insulating sheet 16.

Furthermore, each resistance element 12 is connected in series or parallel to constitute several independent circuits, and lead wires 14 drawn out from each circuit are connected to terminals arranged in a row on the side of the water passage device 1. 15.

As described above, this idea is to provide a flat part to the water supply device, and attach a collective resistor in which a plurality of resistive elements are arranged in a row in a thin shape on the flat part. Since multiple resistive elements are attached to the water flow device, cooling is ensured, and the lead wire drawn out from the resistive element is connected to a terminal provided on the side of the water flow device. The lead wires are also short and have almost the same length.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, in which Fig. 1 is a perspective view of a water-cooled resistor, Fig. 2 is a cross-sectional view taken along the line mA-A, and Fig. 3 is a cross-sectional view taken along the line B-B. , FIG. 4 is an enlarged sectional view taken along the line CC in FIG. 2, and FIG. 5 is a partially exploded perspective view of the collective resistor. 1... Water flow device, 2... Partition wall, 3, 4
...Space, 5... Passage, 6... Inlet, 7... Outlet, 8, 9... Nozzle,
DESCRIPTION OF SYMBOLS 10...Collective resistor, 11...Resistance wire, 12...Resistance element, 13...Coating sheet, 14...Lead wire, 15... ...Terminal, 1
6...Heat-resistant insulation sheet, 17...Glass fiber.

Claims (1)

[Scope of utility model registration request] A flat part is formed in a hollow metal water passage device 1 having a water inlet 6 and an outlet lower part. On the waist flat part, a plurality of resistance elements 12 each having a resistance wire 11 wound around a heat-resistant insulating sheet 16 are attached to a water-resistant, heat-resistant, and flexible material. Thin planar collective resistors 10 are arranged and coated in a flexible insulating material, and each lead wire 14 of each resistor element 12 is connected in parallel or in series with each other and is drawn out, and water is passed through the resistor elements 12. A water-cooled resistor connected to each terminal 15 provided on the side of the vessel 1.