JPS5934980Y2 - transformer equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a transformer device, particularly a tightening device for a core of an external iron type transformer.

Generally, the iron core of a transformer must be sufficiently tightened to prevent it from shifting against the enormous mechanical force generated in the coil during a short circuit.

This conventional iron core tightening device for a non-specified iron transformer is constructed as shown in FIG. 1. In FIG. 1, 1 is an upper tank, 2 is a lower tank attached to the upper tank 1, and 3 is a A core holder provided in the upper tank, 4 a core placed between the core holder 3 and the lower tank 2 with a core holder 5 in between, 6 a coil provided in the core 4, 7 a core in the upper tank 1; Upper clamping bracket installed, 8 is lower tank 2
9 is the upper and lower tightening fittings 7 and 8.
The connecting member 10 is a hydraulic jack that tightens the upper and lower fastening fittings 7 and 8 via the connecting member 9, and 11 is a hydraulic pump that supplies pressure oil to the hydraulic jack 10.

In the conventional device configured in this way, the hydraulic pump 11
Pressure oil is supplied from the hydraulic jack 10 to the hydraulic jack 10, and the upper and lower tanks 1 and 2 are tightened in the direction of the arrow through the connecting member 9. After the iron core 4 is sufficiently tightened, the joints of the upper and lower tanks 1 and 2 are welded and fixed. do.

With this conventional type, a large tightening force can be easily obtained, but a dedicated tightening fitting is required for each device for the upper and lower tanks, and in particular, the tightening fitting 8 on the lower tank 2 side has a transport limit of A The disadvantage is that it is difficult to install.

This invention is an attempt to eliminate such drawbacks of the conventional one, and an embodiment of this invention will be described below based on FIG. 2.

That is, in FIG. 2, 12 is a removable clamping beam arranged at the bottom of the lower tank 2, and 13 is a clamping beam 12.
This is a fastening fitting that is attached to a hydraulic jack 10.

The rest of the structure is the same as that shown in FIG. 1, so the explanation will be omitted.

In this structure, the core 4 is held by the core holding plate 5.
The iron core 4, and then weld and fix the abutting parts of the upper and lower tanks 1 and 2.

Note that the upper and lower tanks can be tightened in exactly the same way by using other tightening devices such as journal jacks in addition to hydraulic jacks.

In this way, there is no need to provide a mounting bracket on the lower tank, which is particularly problematic in terms of transportation limitations, and since mechanical force is used, a large tightening force can be easily obtained.

As mentioned above, the transformer device according to this invention has an iron core arranged in an upper tank and a lower tank so that it can be tightened by both tanks, and a first tightening member provided outside the upper tank and the lower tank. The tank is connected to a second tightening member placed at the bottom of the tank by a connecting member, and the upper and lower tanks are tightened by a tightening device via this connecting member to tighten the iron core.It has a simple structure and is reliable. The iron core can be tightened.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing a conventional transformer device of this type;
The figure is a side sectional view showing one embodiment of this invention. In the figure, 1 is the upper tank, 2 (is the lower tank, 3 is the core holder, 4 is the core, 5 is the core holder, 6 is the coil, 7 is the upper clamping bracket, 8 is the lower clamping bracket, 9 is the connection Members, 10 is a hydraulic jack, 11 is a hydraulic pump, 12 is a tightening beam, 1
3 is a tightening metal fitting. Note that the same reference numerals in the drawings indicate the same or corresponding parts.

Claims (3)

[Scope of utility model registration request] (1) An iron core disposed so as to be tightenable in the upper tank and the lower tank, a first tightening member provided on the outside of the upper tank, and a second tightening member placed at the bottom of the lower tank. , a connecting member that connects the first and second lined members;
A transformer device comprising a tightening device that tightens the iron core by tightening between the upper tank and the lower tank via the connecting member. (2) The transformer device according to claim 1, wherein the second clamping member comprises a clamping beam and a clamping fitting. (3) The transformer device according to claim 1 or 2, wherein the tightening device is a jack.