JPS5961113A - Multipoint type impregnation control apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to the measurement of capacitance or dielectric constant (t2IIIδ) of a plurality of test specimens required for the manufacture of electrical equipment, for example, a rotating electric machine insulation system. This invention relates to a multi-point impregnation control device that detects and records physical changes along with other variables such as temperature and pressure.

[Technical background of the invention and its problems]

For example, in manufacturing a rotating electric machine coil insulation system by full impregnation, it is important to control whether the resin is sufficiently impregnated into the insulating layer, especially during the impregnation process. It is known that the impregnation of resin into the insulating layer can be ascertained by detecting and recording temporal changes in capacitance or -δ between the coil wire and the iron core. In such cases, multiple rotating electric machines are usually impregnated at the same time.
Since the impregnation speed of each rotating electrical machine differs depending on its coil shape and history of insulating taping, it is important to individually manage all the rotating electrical machines that are being impregnated at the same time. Furthermore, in such process control, it is also necessary to check whether the temperature of the impregnated resin or the ambient pressure is set correctly, as well as the temporal changes in the impregnation of the rotary electric machine coil insulation, by comparing them against the same time axis. Hikoru. In general, as described above, the method of individually detecting and recording the time, target, and change of the temperature and temperature of multiple test specimens is to use a single capacitor or bin.
Prepare a δ detector (hereinafter referred to as LCR meter) and connect it to multiple test specimens. ! ffi A method of manually performing and recording this, or multiple LCRs
This is easy if you prepare meters in advance, connect them to multiple test objects individually, and record the data. However, in the former method of using a single LCR meter and manually connecting and converting multiple test specimens, if this is to be done completely, it is desirable to have a human constantly managing the meter. In some cases, they are forced to stay up all night, requiring a great deal of manpower and resulting in irrational management methods. In the latter method of using a plurality of LCR meters, it is necessary to have a number of expensive LCR meters, which inevitably increases the size of the device and requires a large space, resulting in loss. Furthermore, in both of the above methods of detecting and recording the capacitance or δ of the two, it is necessary to detect and record other quantities such as resin temperature and pressure using completely separate circuits. Even when it is recorded, it is left on a different chart, and it becomes difficult to match the time axis with the chart that records everything such as capacitance or -δ.

[Purpose of the invention]

The present invention has been made to improve the drawbacks of the general conventional method, and allows the capacitance or theory δ of a plurality of test specimens to be determined inexpensively and rationally.

[Embodiments of the invention]

The present invention will be explained below with reference to the drawings.

In FIG. 1, 1 indicates various measured quantities to be detected.

Among these, 7Sl~lsn is the capacitance (or plow δ value) to be detected from each test piece, and 7Sl~lsn is the temperature (or δ value) that is different from 181~7Sn but required for control (or pressure) indicates that there is a quantity. 2 is each detected amount (1s!~JSn.

l5k) Switches wired for VC connection (2R1 to 2Rn.

2Rk)'i, of which 2 R1~2 Rn is one L
Appropriately converted to CR range and recorded as input. Also, 2R
k is connected to a temperature detector 6, and the analog output output therefrom is appropriately converted into the full scale range of the recording word 5 by a temperature converter 7 and recorded. Here, the recorder 5 is a multi-point notation meter, and the recorder 5 is equipped with a continuous contact type synchronous signal transmitter 8. The relay 2 is actuated by the output signal generated by the continuous contact type synchronizing signal transmitter 8.The operation of the device thus constructed will now be described. In Fig. 2, 9 indicates the operating state of the /f lancing motor (hereinafter referred to as BM) of the recorder 5, and each chevron (
9R1~! ? Rn, 9ak) indicates that each dot is in the locked state.

10 shows the operating status of each relay, and each figure (J
Each relay is closed only in the chevron-shaped portion (7R1-1onn, J0Rk). For example, dot N of recorder 5
At the same time as the BM lock state of the OI ends, a signal synchronized with this is issued, and the relay 2Rz connecting the 7S2 and the LCR meter 3 is closed. In this state, the value of IS2 is LCR
It is detected by the meter 3 and inputted to the recorder 5 via the static kg amount converter 4. When the LCR meter 3 and converter 4 become sufficiently stable, the recorder 50BM enters the locked state and records the value 1512 at point 2 of point 9. From now on 182 H
I Sg...18n, ISk and so on.

By repeating this operation cyclically, the capacitance (lSl-1sn) of the n test specimens and the temperature are automatically selected to minimize equipment and to select an appropriate chart paper feed speed. As a matter of fact, the events are almost continuously recorded in the records.

A specific embodiment of the multi-point impregnation control device according to the present invention will now be described.

Example 1 During the impregnation of a fully impregnated rotating electric machine insulation system, it became necessary to continuously detect and record changes in the capacitance of five stators and the temperature of the resin. Therefore, we manufactured a device with the above basic configuration. First, use Model 4332 for each capacitance measurement.
A LCR meter (horizontal tube Heulet manufactured by Z4 Card) was selected. This LCR meter is 3pF to 1nF
It has full scale measurement ranges. Also, this L
CR meter color is related to each full scale range, and full scale 1. Moreover, an analog output that can be responded to in a short time of 25 seconds is generated. A six-dot recorder ER186 (Yokozutsu Electric Co., Ltd. 1i-9, above-mentioned I
A capacitance converter was manufactured so that the output of V corresponded to the full scale range of this recorder, and the capacitance of the five stators was recorded at dots 1 to 5. Next, a temperature detection circuit was provided completely separate from the capacitance measurement circuit. In other words, by measuring the temperature with 16 pairs of CCCs, the temperature ranges from -10℃ to 90℃.
A temperature converter MSIOI type (MTT Kogyo Keizoku Co., Ltd.) that corresponds to the full scale range of the recorder was manufactured and led to the recorder's dot 6.

As expected, this device detected and recorded the capacitance and resin temperature of the five stators individually and accurately and continuously on the same recorder.

Example 2 In the impregnation process of an insulation system in which a single coil is impregnated,
It became necessary to detect and record t1δ for the four coils up to a certain time ti, and then to detect and record the capacitance for each of the four coils. At the same time, it was desired to simultaneously record both the temperature of the impregnated resin and the applied pressure. Therefore, we manufactured a device based on the above basic circuit. TYPE 25 as LCR meter
81 LCR meter (horizontal tube Hewlett-Packard M)
Furthermore, the temperature and pressure were recorded by connecting to the same recorder that records tan δ or capacitance in exactly the same manner as the temperature detection circuit of Example 1. Switching between -δ and capacitance at time tl was performed using a timer. In this case as well, as expected, the theory δ and capacitance of the four coils, along with the temperature and pressure of the resin, were drawn continuously and accurately on the same recording material.

〔Effect of the invention〕

As explained above, according to the present invention, temporal changes in capacitance or δ of a plurality of test specimens can be detected individually and continuously with a minimum of equipment, along with other quantities such as temperature and pressure. It is possible to provide a highly rational multi-point impregnation control device for recording.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a multi-point impregnation recording device according to the present invention, and FIG. 2 is an explanatory diagram showing the operating states of the balancing motor and relay of the recorder shown in FIG. 1. ...Measurement quantities, 181~ISn:...Capacitance (or -δ) of test object, ISk...Temperature, 2...Relay, 3...Capacitance (or Peng δ) detector ,4,
7...Applicant's agent Patent attorney Takeshi Suzue Syllable 1
Diagram 2nd cause

Claims (1)

[Claims] In a device that impregnates the coil of an electrical device with an insulating face, etc. and also manages the impregnation state, it uses a multi-point recorder, outputs a contact signal synchronized with the dots of this recorder, and connects multiple relays. Automatically convert and connect capacitance or -δ detector + t to multiple test specimens in sequence via A multi-point impregnation management device characterized by recording on the multi-point recorder via a device and an analog output converter.