JPS6279337A - Trouble shooter for thyristor valve - Google Patents

Abstract

PURPOSE:To make this apparatus fully adaptable to a larger capacity of a thyristor valve with a simple construction, by arranging light emitting bodies provided corresponding to individual thyristor elements, a camera, an image processor and an output unit. CONSTITUTION:When a voltage is applied to thyristor elements Th1-Thn, all neon lamps L1-Ln come ON if no abnormality exists therein Th1-Thn. As a result, lights of the lamps L1-Ln are introduced into respective segments of an image processor 2 through a video camera 1 and all segments output electric signals to a recorder 3 to the effect that the lights are held. If the element Thm suffers an abnormality, the lamp Lm corresponding to the element Thm does not light. So, there is no light held in that Sm alone among the segments S1-Sn of the processor 2 and all the segments but that Sm output electrical signals to the recorder 3 to the effect that lights are held while the segment Sm outputs an electrical signal to the effect that no light is held.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a failure diagnosis device for diagnosing whether or not a thyristor element included in a thyristor valve is in a failure state.

[Background of the invention]

As this type of failure diagnosis device, for example, Japanese Patent Application No. 57-19
There is one described in No. 5930. FIG. 5 is a circuit diagram showing this conventional failure diagnosis device, in which the thyristor elements Th+, T
hz, 'rtt, 3. ...ThI, an electric-optical conversion circuit E/L, an optical-electrical conversion circuit L/E, and a light guide LG, i that connects these conversion circuits E/L and LZE. A branch circuit D, a flip-flop circuit FF, etc. are provided, and these conversion circuits E/L,
L/E, light guide LG.

The microcomputer circuit MI logically judges the signals outputted through the differential circuit D, flip-flop circuit FF, etc., and determines the logic of the thyristor elements Th+, Thz, Th:+...Th
, is used to diagnose whether or not it is in a failure state.

In this conventional failure diagnosis device, as described above, the light guide LG, the electric-optical conversion circuit E/L, Since optical-electrical circuits L/E and the like are provided, the number of parts and circuits is large and the structure is complicated. Particularly in recent years, the capacity of thyristor bubbles has been increasing, and the number of thyristor elements has tended to increase. At least 6 to 12
Since thyristor valves are required, the number of thyristor elements is 600 to 2,400, and if the conventional fault diagnosis device described above is applied to such a large capacity thyristor valve, 600 to 2,400 light guide LGs are required. , conversion circuits E/L, L/E, etc. must be provided, which leads to further complications in the structure and increases the size of the device.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned actual situation in the prior art, and its object is to provide a thyristor valve failure diagnosis device that has a simple structure and is fully adaptable to increasing the capacity of thyristor valves.

[Summary of the invention]

In order to achieve this object, the present invention provides a light emitting device such as a neon lamp, a light emitting diode, etc., which is provided corresponding to each thyristor element included in a thyristor bulb and emits light in accordance with the voltage applied to the thyristor element. a camera such as a video camera that detects the light emitted from the light emitting body; an image processing device that processes images from this camera; and a device that detects whether or not the thyristor element is in a failure state based on the output of the image processing device. The present invention is equipped with an output device such as a recording device for outputting the information, and is configured to diagnose a failure of a thyristor element without providing a conventional light guide, electric-to-optical conversion circuit, optical-to-electrical conversion circuit, etc.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The thyristor valve failure diagnosis apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram showing a schematic configuration of a first embodiment of the present invention. In this first embodiment, each thyristor element T h l included in the thyristor valve,
Th2. T h 3. T h 4.・Old・
・Current limiting resistors R1, R2, corresponding to T h n
A light emitting body, such as a neon lamp LL, L2 . L3. L4゜・
・・・・・・Ln is provided, and these neon lamps L
A camera, for example a video camera 1, is provided to detect the light emitted by 1 to Ln. Also, video camera 1
An image processing device 2 connected to the video camera 1 to process the image of the video camera 1, and an output device outputting whether or not the thyristor element Thl-Th,1 is in a failure state based on the output of the image processing device 2. For example, a recording device 3 for recording on a predetermined recording paper is provided. The image processing device 2 described above is
For example, as shown in FIGS. 2(a) and 2(b), the number of segments S corresponding to the thyristor elements Thl to Th11 is
L, S2. S3. . . . each thyristor element ThI=T in the image of the video camera 1.
The lights of the neon lamps L1 to Ln corresponding to the segments 81 to Sn are stored in the corresponding positions of the segments 81 to Sn, and the light stored in the segments 81 to Sn is converted into electrical signals. , that is, each segment l
Electric signals corresponding to −3l to Sn are output to the recording device 3.

In this first embodiment, the thyristor elements Th, ~
When a voltage is applied to Thn, assuming that all thyristor elements Th, ~Th, are normal, current flows through each current limiting resistor R1~Rn, and all neon lamps L1~Ln 2 (a) to each segment 81 to Sn of the image processing device 2 through the video camera 1.
), the light from the neo lamps L1 to Ln is stored, and an electric signal indicating that the light is stored from all the segments 31 to Sn is output to the recording device 3.
records on the recording paper that a predetermined electrical signal is being output from all segments 81 to Sn.

This determines that all of the thyristor elements Th, ~Th, are in a normal state.

Further, when a voltage is applied to the thyristor element Th, ~Th, if it is assumed that an abnormality has occurred in the thyristor element Th, the neon lamp L associated with this thyristor element Th will not light up, and therefore the image As shown in FIG. 2 (bl), light is not accommodated only in segment Sm of the segments s1 to Sn of the processing device 2, and therefore light is transmitted to the recording device 3 from each of the segments 1-3l to Sn except for segment sm. An electric signal indicating that the light is stored is output from the segment Sm, and an electric signal indicating that the light is not stored is output from the segment Sm.
-3m, no light is stored and the corresponding thyristor element Th is in an abnormal state, other thyristor elements Th +~T
Record that h is in a normal state.

In the embodiment configured in this way, it is possible to detect whether or not the thyristor element is in an abnormal state without requiring a light guide or the like, and the structure is simple and is fully suitable for increasing the capacity of the thyristor valve. Therefore,
It is possible to realize miniaturization of the device.

FIG. 3 is an explanatory diagram showing a schematic configuration of a second embodiment of the present invention. In this second embodiment, for example, light emitting diodes LEDI to LEDn that emit infrared rays are provided as light emitters. Light emitting diode LEDI~LEDn
Camera 1 that senses infrared rays as a camera that detects the light of
1 is provided. In addition, in FIG. 3, D1 to Dn are constant voltage diodes that limit the current flowing to the light emitting diodes LEDI to LEDn.

The structure of the second embodiment does not require a light guide, has a simple structure, can realize miniaturization of the device, and has a light emitting diode LED.
~ Even in locations where visible light is likely to hit the LEDn, it is possible to reliably diagnose whether the thyristor elements Th, -Th are in an abnormal state by emitting infrared rays.

FIG. 4 is an explanatory diagram showing a schematic configuration of a third embodiment of the present invention. This third embodiment shows an application example in which thyristor valves 4 are stacked in two stages and arranged in three sets for a total of six, and the thyristor elements of each thyristor valve 4 are A camera 6 is arranged so as to be able to face the light emitting body 5 provided at the front. This camera 6 is attached to a rail 8 provided on a support 7, and is movable by a signal output from a control device (not shown).
In addition, so that each of the light emitting bodies 5 related to the thyristor elements of the upper stage thyristor valve 4 and the light emitters 5 related to the thyristor elements of the lower stage thyristor valve 4 can be displayed.
The lens portion can swing vertically in response to a signal output from a control device (not shown). Further, the image processing device connected to the camera 6 and the recording device connected to this image processing device are housed together in one housing 9.

In the third embodiment configured in this manner, the camera 6 is moved or stopped along the rail 8 in response to a signal from a control device (not shown), and the lens surface of the camera is located at the upper stage and at the lower stage of the thyristor valve. By appropriately controlling the swing so as to face the light emitting body 5 associated with the thyristor element 4, it is possible to detect whether the thyristor element is in an abnormal state without the need for a light guide or the like, and the structure is simple and the thyristor valve 4 It can be sufficiently adapted to increase in capacity, and the device can be made smaller.

〔Effect of the invention〕

Since the thyristor valve failure diagnosis device of the present invention is constructed as described above, there is no need to provide a light guide or the like as in the conventional case, and the structure is simple and is fully suitable for increasing the capacity of thyristor valves. This has the effect of making the device more compact.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a first embodiment of the thyristor valve failure diagnosis device of the present invention, FIG. 2(a),
(b) is an explanatory diagram illustrating image processing in the image processing apparatus provided in the first embodiment shown in FIG. FIG. 4 is an explanatory diagram showing a schematic configuration of a third embodiment of the present invention, and FIG. 5 is a circuit diagram showing a conventional failure diagnosis device for a thyristor valve. 1... Video camera, I'... Camera, 2... Image processing device, 3... Recording device (output device), 4...・・Thyristor valve, 5
...Light emitter, 6...Camera, 7...
...Strut, 8...Rail, 9...Housing, Thn, Thz, Thz, Thn, ~ThI,...
...Thyristor element, LL, L2. L3. L4~L
n・・・・・・Neon lamp (luminous body), LEDl,
LED2. ~LEDn...Light emitting diode (light emitter), R1°S2,33. ~3m, ~Sn...
·segment. Figure 2 (a) (b) ----------hn Figure 4

Claims (1)

[Claims] 1. A light emitter that is provided corresponding to each thyristor element and emits light according to the voltage applied to the thyristor element, a camera that detects the light emitted from this light emitter, and processes images from this camera. What is claimed is: 1. A failure diagnosis device for a thyristor valve, comprising: an image processing device that performs the image processing; and an output device that outputs whether or not the thyristor element is in a failure state based on the output of the image processing device.