CN204694553U - A kind of oil clearance cushion block compressibility measurement mechanism - Google Patents

Abstract

The utility model discloses a measuring device for the compression rate of an oil gap pad, which comprises a base, a lever mechanism and a measuring mechanism. The lever mechanism includes a column and a lever. The column is arranged on the base, and one end of the lever is rotatably connected with the column. , the oil clearance cushion block is arranged on the base, and the measuring mechanism is arranged between the lever and the oil clearance cushion block. By applying a constant pressure to the other end of the lever, the measuring mechanism can measure the height of the oil clearance cushion block at this time. The device can accurately realize the constant pressure drying of the oil gap pad while measuring the compressibility of the oil gap pad, and the obtained measurement data has high reference value.

Description

A device for measuring the compressibility of an oil gap pad

technical field

The utility model belongs to the technical field of transformers, in particular to a measuring device for the compression ratio of oil gap pads in transformer coils.

Background technique

At present, the traditional method of measuring the compression ratio of the oil gap pad in the transformer coil is: use a press to measure the thickness of the oil gap pad before or after the transformer coil is dried and calculate the compression ratio of the oil gap pad, and perform appropriate calculations on the obtained data. After correction, it is used in the design and manufacture of transformer coils. The disadvantage of using this calculation method is that the actual situation of coil drying is not considered, because in actual production, the coil is dried with a constant process pressure, and constant pressure drying can promote the uniformity of the fiber structure of the oil gap pad And compactness, so that the size of the oil gap pad is more stable, and the mechanical properties are superior. However, the above-mentioned traditional measurement method does not measure the compressibility of the oil gap pad during the constant pressure drying process. Constant pressure drying of the block. Therefore, the measurement results are quite different from the actual production, and cannot reflect the real situation of the transformer coil drying process.

Utility model content

The technical problem to be solved by the utility model is to provide a device for measuring the compression rate of the oil gap pad according to the above-mentioned deficiencies in the prior art. The constant pressure drying of the block can truly reflect the actual situation of transformer coil drying in the process of measuring the compressibility of the oil gap pad.

The technical solution adopted to solve the technical problem of the utility model is that the oil gap pad compression rate measuring device includes a base, a lever mechanism and a measuring mechanism, the lever mechanism includes a column and a lever, and the column is arranged on the base, and one end of the lever is connected to the column It is rotatably connected, the oil gap pad is set on the base, and the measuring mechanism is set between the lever and the oil gap pad. By applying constant pressure to the other end of the lever, the measuring mechanism can measure the oil gap pad at this time. The height of the block.

Preferably, the device further includes a loading mechanism, the loading mechanism is connected to the end of the lever away from the column, and is used to apply constant pressure to the lever.

Further preferably, the loading mechanism includes a plurality of weights.

Preferably, the lever includes a cross arm and an oblique arm, the cross arm is arranged along the horizontal direction, the oblique arm is arranged obliquely to the horizontal direction, the cross arm and the oblique arm are connected as a whole, and one end of the cross arm is connected to the column, One end of the oblique arm is connected to the loading mechanism, the length of the oblique arm is greater than that of the cross arm, and the height of the end of the oblique arm connected to the loading structure is greater than the height of the cross arm, and the oil gap pad is arranged on the base at a position corresponding to the cross arm.

Preferably, the weight loading range of the loading mechanism is 0-200kg, and the load-bearing range of the oil gap pad is 0-3000kg.

Preferably, the base, column, lever, measuring mechanism and loading mechanism are all made of materials resistant to high temperature, corrosion and vacuum pressure.

Further preferably, the high temperature resistance ranges from 120 to 130 degrees, the corrosion resistance is kerosene gas corrosion resistance, and the vacuum pressure resistance range is below 10 Pa.

The utility model oil gap pad compression rate measuring device is mainly a lever pressurized structure, adopts the gravity loading method to measure the compression rate, has a simple structure, simple and practical operation, and does not rely on external energy power.

Specifically, the beneficial effects of the utility model oil gap pad compression ratio measuring device are as follows:

(1) The data measured by the device truly reflects the actual situation of transformer coil drying, the measurement results are basically consistent with the actual production situation, and the reference value of the measurement data is high;

(2) Reasonable structure, simple and practical operation: during the operation, there is no need to modify and deal with the drying furnace, and it can withstand the influence of high temperature, high vacuum and kerosene vapor in the drying furnace, and does not need to rely on external energy sources;

(3) High measurement accuracy: the oil gap pad does not need to be disassembled repeatedly during the three stages of measurement before drying, during drying, and after drying, eliminating the measurement caused by the secondary disassembly and assembly of the oil gap pad The measured data is more accurate and real.

Description of drawings

Fig. 1 is a schematic structural diagram of the measuring device for the compressibility of the oil gap pad in Embodiment 1 of the present utility model.

In the figure: 1-base; 2-lever; 3-measuring mechanism; 4-loading mechanism; 5-oil gap pad; 6-column.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the embodiments described below are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a measuring device for the compression rate of an oil gap pad, which comprises a base, a lever mechanism and a measuring mechanism. The lever mechanism includes a column and a lever. The column is arranged on the base. The gap cushion block is arranged on the base, and the measuring mechanism is arranged between the lever and the oil gap cushion block. By applying constant pressure to the other end of the lever, the measuring mechanism can measure the height of the oil gap cushion block at this time.

Example 1:

As shown in FIG. 1 , in this embodiment, the device for measuring the compressibility of the oil gap pad includes a base 1 , a lever mechanism and a measuring mechanism 3 . The lever mechanism includes a column 6 and a lever 2 . Preferably, the device also includes a loading mechanism 4 .

Wherein, the column 6 is fixedly arranged on the base 1, and one end of the lever 2 is rotatably connected with the column 6 through a pin shaft, constituting the fulcrum of the lever mechanism. The loading mechanism 4 is connected with the end of the lever away from the upright, and is used to apply constant pressure to the lever. The oil gap pad 5 is set on the base 1, and the oil gap pad 5 is between the base 1 and the measuring mechanism 3. When a constant pressure is applied to the lever 2 through the loading mechanism 4, then the force transmission effect of the lever can be realized. The function of applying pressure to the oil gap pad 5 forms a structure in which the oil gap pad is compressed by force, and the height of the oil gap pad can be measured by the measuring mechanism 3 . By changing the weight of the loading device, the pressure on the oil gap cushion block 5 can be adjusted.

In this embodiment, the lever 2 includes a cross arm and an oblique arm, the cross arm is arranged along the horizontal direction, the oblique arm is arranged obliquely to the horizontal direction, the cross arm and the oblique arm are connected as one, and one end of the cross arm is connected with the column, One end of the oblique arm is connected to the loading mechanism, the length of the oblique arm is greater than that of the cross arm, and the height of the end of the oblique arm connected to the loading structure is greater than the height of the cross arm, and the oil gap pad 5 is arranged on the base at a position corresponding to the cross arm.

In this embodiment, the weight loading range of the loading mechanism is 0-200 kg, and the load-bearing range of the oil gap pad is 0-3000 kg. The length of the transverse arm and the oblique arm of the lever is set according to the bearing range.

Wherein, the measuring mechanism 3 specifically adopts a reference platform capable of measuring the height of the oil gap pad.

In this embodiment, the loading mechanism includes a plurality of weights. A bearing platform is suspended from the free end of the lever, and the weight is placed on the bearing platform.

Preferably, the base 1 , column 6 , lever 2 , measuring mechanism 3 and loading mechanism 4 are all made of materials resistant to high temperature, corrosion and vacuum pressure.

Wherein, the high temperature resistance temperature range is specifically 120-130 degrees, the corrosion resistance is kerosene gas corrosion resistance, and the vacuum pressure resistance range is below 10 Pa.

Specifically, in this embodiment, the base 1 , column 6 , lever 2 , measuring mechanism 3 and loading mechanism 4 are all made of steel, and the steel of the entire structure is coated with high temperature and corrosion resistant paint.

The process of using the device in this embodiment to measure the compressibility is as follows: the first step is to place the oil gap pad on the base 1 in the device, and the oil gap pad can be adjusted by loading a certain weight on the load-bearing platform. Apply constant pressure, at this time, the compression ratio before drying can be measured; the second step, move the whole device to the drying oven for drying, at this time, the oil gap pad is in a constant pressure drying state; the third step, after drying Push the device out of the drying oven to measure the compressibility of the oil gap pad after drying. After the above three steps, the three important steps in the measurement of the compressibility of the oil gap pad are completely and truly realized, namely the measurement of the compressibility before drying, the process of constant pressure drying, and the measurement of the compressibility after drying. In these three links, the oil gap pad has been in a constant pressure state, and the oil gap pad has not been repeatedly disassembled, so this device is used to compare the drying process of the oil gap pad in the process of compressibility measurement with the actual production situation. Consistently, the compression ratio measurement is closer to the true state of the coil drying.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (7)

1. A device for measuring the compressibility of an oil gap pad, characterized in that it comprises a base, a lever mechanism and a measuring mechanism, the lever mechanism comprises a column and a lever, the column is arranged on the base, and one end of the lever is rotatably connected to the column , the oil clearance cushion block is arranged on the base, and the measuring mechanism is arranged between the lever and the oil clearance cushion block. By applying a constant pressure to the other end of the lever, the measuring mechanism can measure the height of the oil clearance cushion block at this time. 2. The device according to claim 1, characterized in that the device further comprises a loading mechanism, the loading mechanism is connected to the end of the lever away from the column, and is used to apply a constant pressure to the lever. 3. The device of claim 2, wherein the loading mechanism comprises a plurality of weights. 4. The device according to claim 2, wherein the lever comprises a cross arm and an oblique arm, the cross arm is arranged along the horizontal direction, the oblique arm is arranged obliquely to the horizontal direction, and the cross arm is connected with the oblique arm As a whole, one end of the cross arm is connected to the column, and one end of the diagonal arm is connected to the loading mechanism. The length of the diagonal arm is longer than that of the cross arm, and the height of the end of the diagonal arm connected to the loading structure is greater than the height of the cross arm. The oil clearance pad is set On the base corresponding to the position of the cross arm. 5. The device according to claim 4, characterized in that, the loading range of the loading mechanism is 0-200kg, and the load-bearing range of the oil gap pad is 0-3000kg. 6. The device according to any one of claims 2-5, characterized in that, the base, column, lever, measuring mechanism and loading mechanism are all made of materials resistant to high temperature, corrosion and vacuum pressure. 7. The device according to claim 6, characterized in that the high temperature resistance range is 120-130 degrees, the corrosion resistance is kerosene gas corrosion resistance, and the vacuum pressure resistance range is below 10 Pa.