RU118903U1 - COOLING SYSTEM OF THE TOROIDAL TRANSFORMER OF THE MACHINE FOR CONTACT PIP BUTT WELDING - Google Patents

Abstract

The cooling system of a toroidal transformer of a machine for resistance butt welding of pipes, containing a central hollow pipe for placing a toroidal transformer on it, characterized in that the surface of the central hollow pipe is a landing one and a spiral groove is made on it, four annular grooves and two holes for supplying and removing cooling liquids.

Description

The utility model relates to equipment for flash butt welding of annular pipe joints and to structural elements of transformers with liquid cooling.

Known devices that use a toroidal transformer and toroidal transformer devices with internal cooling.

These devices are taken as analogues. See RF patent for the invention No. 2364973, publ. Bull. No. 23 dated 08/20/2009, application No. 2008119996/09 dated 05/20/2008, H01F 30/16, H01F 27/22 "Toroidal transformer".

The device consists of an annular core, primary and secondary windings, and three copper busbars made in the form of an open ring, cooling is carried out by removing heat from the transformer core through copper buses.

The disadvantages of this device are the reduction of the usable area inside the transformer, due to the introduction of copper tires, cooling pipes of the primary winding and the holes for pumping coolant, which leads to an increase in the overall and landing dimensions, and the mass of the toroidal transformer. These shortcomings do not allow to achieve the technical result of the utility model, which consists in reducing the dimensions and landing dimensions, and the mass of the toroidal transformer.

The invention is known "Reflow welding unit, welding head and moving mechanism for it", see RF patent for the invention No. 2323073, publ. Bull. No. 12 dated April 27, 2008, application No. 2007119194/02 dated May 24, 2007, B23K 11/04, B23K 101/06. This invention is taken as the closest analogue of the prototype.

The welding head contains a central hollow pipe, a welding transformer, clamping and draft carts, two-part levers, steel and current-carrying plates.

The disadvantage of this installation is the lack of cooling of the welding transformer. This drawback does not allow to achieve the technical result of the utility model, which consists in providing cooling and increasing the reliability of the toroidal transformer, and attacks in increasing the productivity of the machine for flash butt welding of pipes.

The objective of the proposed utility model is as follows:

- reduction of overall and landing dimensions, weight reduction and cooling supply to the toroidal transformer;

The technical result of the proposed utility model are as follows:

- reducing the overall dimensions of the machine for flash butt welding of pipes;

- improving the reliability of the machine for flash butt welding of pipes;

- increasing the productivity of the machine for flash butt welding of pipes;

- reducing the overheating of the toroidal transformer;

The set of essential features of the claimed cooling system of the toroidal transformer of the machine for flash butt welding of pipes does not follow explicitly from the studied prior art, has significant differences from the considered analogues. Therefore, the applicant believes that the claimed cooling system of the toroidal transformer of the machine for flash butt welding of pipes meets the criterion of "novelty" and has an inventive step.

The invention is illustrated by drawings, which show an example implementation of the claimed system.

List of drawings

Figure 1 - section along the middle plane of the machine for flash butt welding of pipes, hereinafter "machine".

Figure 2 is a view A of the machine.

Figure 3 - the Central hollow pipe.

The positions in the figures indicate: machine - 1; central hollow pipe - 2; toroidal transformer - 3; sleeve - 4; clamp - 5; O-ring of the annular groove B - 6; screw - 7; lock washer - 8; block - 9; the sealing ring of the annular groove E - 10; annular groove - B; spiral groove - B; a hole for supplying coolant - G; landing surface - D; annular groove - E; coolant drain hole - G.

The system consists of a machine 1 (Fig. 1), in which a central hollow pipe 2 is installed (Fig. 1 ... 3). A toroidal transformer 3 (Fig. 1, 2) is located on the seating surface D (Fig. 3) of the central hollow pipe 2, on which a spiral groove B (Fig. 2, 3) is made, four annular grooves B (Fig. 2, 3) and openings for summing Г and draining Ж coolant (FIGS. 2, 3) in which there are pads 9 (FIG. 2), secured with lock washers 8 (FIG. 2) and screws 7 (FIG. 2). Sleeves 4 (FIG. 2) are connected to the pads 9 from the inside of the pipe using clamps 5 (FIG. 2), through which coolant is supplied and discharged from spiral groove B. O-rings 6 and 10 are installed in grooves B and E (FIG. 2) )

This achieves the technical result that is not in the prototype, reducing the overall dimensions of the machine.

The system operates as follows.

Before welding, the coolant is fed into the spiral groove B along the sleeves 4, then voltage is applied to the toroidal transformer 3 and welding is performed, while the sealing rings in the annular grooves B and E - 6, 10 protect the coolant from getting outside the spiral groove B.

This achieves a technical result that is not in the prototype, reducing the overheating of the toroidal transformer, increasing the reliability of the machine, increasing the productivity of the machine.

Thus, the above information indicates the possibility of using the utility model in the form as it is described in the utility model formula using the known and proposed tools described in the application. Therefore, the claimed utility model complies with the requirement “industrially applicable under applicable law”. According to the proposed utility model, the design and technological documentation of the machine for flash butt welding of pipes has been developed. A prototype is manufactured and tested. The tests gave a positive result.

Claims (1)

The cooling system of a toroidal transformer of a machine for flash butt welding of pipes, containing a central hollow pipe for positioning a toroidal transformer on it, characterized in that the surface of the central hollow pipe is a landing one and it has a spiral groove, four ring grooves and two holes for supplying and removing the cooling liquids.