KR-200500316-Y1 - Generator rotor Vent-Hole inspection unit

Abstract

The present invention relates to a vent-hole inspection device for a generator rotor, and more specifically, to a vent-hole inspection device comprising: a guide rail section attached to one side of a generator rotor for transporting a vent-hole measuring device in a horizontal direction; a shooting section in which the measuring device moves in a horizontal direction and photographs the vent-hole to determine whether it deviates from a preset depth; and a control section that transmits the degree of deviation to a monitoring device if the vent-hole deviates from the preset depth based on the shooting result; wherein the shooting section comprises at least one unit and the shooting section is positioned at least one corner portion of the generator rotor vent-hole, and the measuring device enters an inspection area and moves horizontally along the guide rail section to measure the depth of the vent-hole.

Inventors

• 이성호
• 전병수
• 정성덕
• 황윤성

Assignees

• 두산에너빌리티 (주)

Dates

Publication Date

20260513

Application Date

20191128

Claims (5)

1. A guide rail section attached to one side of the generator rotor and transporting the vent hole measuring device (200) in a horizontal direction; A shooting unit (210) having a wireless distance measuring sensor (211) installed in the measuring device and measuring the depth of the vent hole when the measuring device moves horizontally on the guide rail; and The above wireless distance measuring sensor includes a control unit (220) that transmits the depth information to a monitoring device when the depth of the vent hole measured by the above wireless distance measuring sensor is different from a preset depth. The above-mentioned imaging unit (210) is positioned at least one corner portion of the generator rotor vent hole, and is characterized by measuring the depth of the vent hole while moving horizontally along the guide rail portion when the measuring device enters the inspection area. The control unit (220) includes a calculation unit that calculates the timing of the trigger signal generation of the shooting unit by considering the time when each area of the vent hole passes the lower part of the shooting unit, so that there are no areas of the vent hole that are photographed in duplicate or skipped. The above control unit (220) is characterized by further including a trigger signal unit that generates a trigger signal for each shooting unit according to the calculation result. Vent hole inspection device.
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4. In paragraph 1, A vent hole inspection device characterized by the above-described measuring device having a motor part formed to enable horizontal movement along the guide rail part, a wheel part connected to the motor part to enable horizontal movement, and further having an encoder part formed to continuously check the position of the vent hole during movement.
5. In paragraph 1, A vent hole inspection device characterized by the above-described control unit further including a communication unit that databases information captured by a measuring device traveling horizontally and transmits it to a monitoring device.

Description

Generator rotor vent-hole inspection unit The present invention relates to a vent-hole inspection device for a generator rotor, and more specifically, to a device for determining whether a vent-hole is blocked by measuring the depth of the vent-hole using a distance measuring sensor. Multiple vent holes are formed on the outer surface of the generator rotor to capture heat generated during the operation of the generator. Generally, generators are classified into small, medium, and large sizes. When a generator is operated for a long time, dust generated indoors as well as dust produced during the operation process accumulates in the vent holes. Therefore, before driving each generator, it was necessary to check the rotor size three times for small, and twice for medium and large. When inspecting each generator, there was a problem that one person had to visually inspect all the vent holes of the rotor of each generator for 2 to 3 hours. There were issues such as reduced work efficiency due to the need for personnel to manually move around, perform visual inspections, and rotate the rotor; furthermore, when inspecting repetitive vent holes, the same section could be inspected repeatedly, and errors such as skipping inspection sections could occur. Furthermore, depending on the position of the generator rotor, observers often perform visual inspections in poor postures, which can lead to musculoskeletal disorders. Consequently, there was a need for technology that utilizes cameras and sensors for measurement rather than manual inspection of each generator, thereby catching errors associated with repetitive human work and, furthermore, clearly transmitting the location where a vent hole is blocked. Prior patent technology has been proposed regarding a method to prevent blockage of a through hole that is generally opened. Prior art document 001, Korean Published Patent Application No. 10-2010-011678, discloses a "terminal and a method to prevent blockage of the intake port" in which, when a preset time is reached, a terminal measures variable information such as CPU temperature and load, and the rotational speed of a cooling fan, calculates the current opening rate of the intake port using the measured variable information, compares it with a reference opening rate, and outputs a notification signal according to the comparison result. However, according to prior art document 001, the notification is based on a simple measurement that calculates and indicates the degree of blockage of a specific device. In this invention, if the depth of the vent hole that is equally open is different from the depth of the vent hole that is pre-set through the sensor and the depth measured, the location that needs to be repaired is transmitted to the user's display. However, prior art document 001 has a problem in that it is difficult to determine the exact location because it is a process of simply transmitting a notification signal. In addition, there is a problem in that it is not possible to transmit the continuously measured location while measuring multiple vent holes, and it is not possible to verify repeated measurements or parts that are missed based on the transmitted information. FIG. 1 is a perspective view showing a vent hole in a generator rotor according to one embodiment of the present invention. FIG. 2 is a perspective view of a vent hole inspection device according to one embodiment of the present invention. FIG. 3 is a front view illustrating a measuring device according to one embodiment of the present invention attached to a generator. FIG. 4 is a block diagram illustrating the connection relationship between an inspection device and a monitoring device according to one embodiment of the present invention. FIG. 5 illustrates the process of being displayed on a monitoring device according to one embodiment of the present invention. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. When it is stated that one component is "connected" or "joined" to another component, it should be understood that while it may be directly connected or joined to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly coupled" to another component, it should be understood that there are no other components in between. The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this