KR101675788B1 - Apparatus for Inspection Components of Control Card in Electric Power Plants Control System and Method thereof - Google Patents

Abstract

The present invention relates to an apparatus to adsorb vibration of a control card for controlling an electric power plant, to adsorb vibration in a control system for operating an electric power plant in order to prevent the vibration from being transferred to a plurality of control cards, so as to prevent an error from being generated in the control card. According to the present invention, the apparatus comprises: a plurality of sub-racks installed in a control panel of an electric power plant control system; a first guide rail combined with an inner top of the sub-rack at predetermined intervals and having a first insertion groove formed in a longitudinal direction; a first vibration adsorption pack inserted into the first insertion groove of the first guide rail and having a fluid filled inside; a second guide rail combined with a position corresponding to the first guide rail in an inner bottom of the sub-rack at predetermined intervals and having a second insertion groove formed in the longitudinal direction; and a second vibration adsorption pack inserted into the second insertion groove of the second guide rail and having a fluid filled inside. Since a control card is inserted between the first and the second vibration adsorption pack, the control card is fixed and supported by the first and the second vibration adsorption pack, so vibration transferred to the sub-rack from the outside is adsorbed by the fluid filled in the first and the second vibration adsorption pack, and is not transferred to the control card. According to the present invention, since vibration is adsorbed to be prevented from being transferred to a control card through a plurality of sub-racks installed in a control panel of a control system for operating an electric power plant, lifespan of the control card is extended, and stability in operation and management of the electric power plant is reinforced.

Description

TECHNICAL FIELD [0001] The present invention relates to a vibration control apparatus for a power control system,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for absorbing vibration transmitted from a power plant control system to a control card, and more particularly to a control system for operating a power plant, And to an apparatus for preventing the occurrence of such an abnormality.

Generally, power plants are prime movers that produce electricity and facilities attached to them. Power plants convert mechanical energy or thermal energy into electrical energy. Therefore, energy is required for development, and these energy sources are called power generation resources or power resources. Hydropower and thermal power are the main types of power generation, but in recent years, the proportion of nuclear power generation is increasing due to the sudden increase in electric power demand and resource problems. As a kind of power plant, a hydroelectric power plant sends water from a river or reservoir located at a high place to a water turbine at a low place through a hydraulic pipeline to turn a turbine and obtain electric energy from a generator connected directly to a turbine. Dam-type power plants, reservoir-type power plants, and amphibious power plants. In addition, thermal power plants convert the thermal energy of coal, oil, and natural gas into mechanical energy and convert mechanical energy into electrical energy. Thermal power plants include gas power plants, gas turbine power plants, and internal power generation plants. Nuclear power plants generate electricity by converting thermal energy generated by the fission reaction into electrical energy. The tidal power plant develops using the tidal car generated by the tide in the ocean. In addition, the tidal power plant uses a special aberration that is suitable for this purpose because the reservoir is constructed by constructing the dam in the large mudguard of the tidal river and the drop is very small compared with the hydroelectric power. Geothermal power plants use steam or hot water generated by natural thermal energy in the ground. Geothermal power plants are, in principle, the same as steam power plants that generate electricity from the boiler's steam. Wind power plants generate wind power by rotating windmills. Wind power plants have a disadvantage in that measures are required when the wind energy is low and the equipment is large, and when there is a storm or no wind.

Conventional power plants are equipped with various protection systems, control systems, and monitoring systems for power generation facilities to detect, monitor, and control all situations that occur in power plants. For this monitoring and control, the control system operates and analyzes facilities for operation and measurement by a plurality of control cards. The control card includes a plurality of integrated circuits (ICs) on a printed circuit board so that an active element and a passive element are mounted in combination. Due to the characteristics of the power plant, the control card is susceptible to vibration or heat, and is deteriorated by noise, overvoltage, or overcurrent included in a signal input / output from the control card, thereby causing an error. Moreover, once the plant is shut down after one operation, it will take a lot of time and money to restart, especially in the case of nuclear power plants, it can lead to the most critical safety-related fatal problems.

As a prior art related to the present invention, Patent Document 1 discloses a sub rack main body in which a mounting space for mounting a substrate is formed; A guide unit installed in the sub rack body, into which a substrate mounted on the sub rack body is inserted; And a cover member rotatably formed on a front surface of the sub rack main body, wherein the guide portion includes an insertion groove for inserting the substrate, and a guide groove for supporting the substrate inserted in the insertion groove, And an electromagnetic wave shielding member for shielding electromagnetic waves is formed on a surface of the cover member facing the mounting space.

However, although the prior art has a structure in which the substrate is fixedly coupled to the insertion groove of the guide portion of the sub rack body and the fixing protrusions, the vibration transmitted to the sub rack is transferred to the substrate as it is and is continuously transferred to the semiconductor integrated circuit Failure to deliver solder failures, dielectric breakdown, or electrical signals to the active or passive components could lead to catastrophic problems such as power plants where safe operation is critical.

Korean Registered Patent No. 10-1168515 (issued on July 27, 2012)

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a control system for a power plant, And to maintain the safe and normal operation of the power plant.

It is another object of the present invention to extend the replacement period of the control card by preventing vibration caused by minute and continuous vibration or earthquake generated in the power plant from being transmitted to the control card for power generation.

In order to achieve the above-described object, the present invention provides a sub rack comprising a plurality of sub racks mounted in a control panel of a power plant control system; A first guide rail coupled to the inner upper end of the sub rack at regular intervals and having a first insertion groove formed in the longitudinal direction; A first vibration absorbing pack inserted into the first insertion groove of the first guide rail and filled with a fluid therein; A second guide rail which is coupled to the lower inner side of the sub rack at a position corresponding to the first guide rail at a predetermined interval and has a second insertion groove formed in the longitudinal direction thereof and a second guide rail inserted into the second insertion groove of the second guide rail, Wherein the control card is inserted between the first and second vibration absorbing packs to fix the control card to the first and second vibration absorbing packs, To the sub rack is absorbed by the fluid filled in the first and second vibration absorbing packs so as not to be transmitted to the control card.

In the present invention, the first vibration-absorbing pack is formed with a first receiving groove for receiving the upper end of the control card, the second vibration-absorbing pack is formed with a second receiving groove for receiving the lower end of the control card, A first support frame for fixing the upper end of the control card is coupled to the receiving groove and a second support frame for fixing the lower end of the control card to the second receiving groove.

In addition, in the present invention, the first vibration absorption pack and the second vibration absorption pack may include an injection port for injecting the fluid into the first vibration absorption pack and a cap for opening and closing the injection port.

Further, in the present invention, the fluid may comprise any one of liquid, gel or gel.

In the present invention, the first fixing grooves are respectively formed on the left and right sides of the bottom surface of the first guide rail, the second fixing grooves are formed on the right and left sides of the second guide rail plane, The first shielding plate and the second shielding plate are coupled to each other to block electromagnetic waves from entering the control card.

Further, in the present invention, a pair of flaps for opening and closing the first guide rail and the front surface of the second guide rail may be combined.

According to the present invention, it is possible to prevent errors or malfunctions due to dielectric breakdown of the control card, drop-off of the soldered portion, etc. by absorbing vibration transmitted to the control card through a plurality of sub racks provided in the control panel of the control system for operating the power plant, It has the advantage of extending the life of the card and enhancing stability in the operation and management of the power plant.

1 is a front view showing a control panel of a general power plant control system.
2 is a perspective view showing an embodiment of the present invention in which a sub rack is installed in a control panel of a power plant control system and is equipped with a plurality of control cards.
3 is an exploded perspective view showing a vibration absorption apparatus of a control card for power plant control according to the present invention.
4 is a sectional view showing a sub rack on which a plurality of control cards are mounted according to the present invention.
5 is a cross-sectional view showing another example of a sub rack on which a plurality of control cards are mounted according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a vibration absorbing device of a control card for power plant control according to the present invention will be described in detail with reference to the accompanying drawings.

In Fig. 1, a system for controlling a power plant is provided with at least one control panel 1, and a power panel 2 for controlling power together with the control panel 1.

In Fig. 2, the control panel 1 is provided with a plurality of sub racks 3. The sub rack 3 has a rear side, a left side, a right side, a plane and a bottom side closed except the front side, and a plurality of control cards 5 are mounted inward. That is, the control card 5 is equipped with a semiconductor integrated circuit, an active element, and a passive element for generating various electrical signals for controlling the power plant, inputting / outputting signals, or transmitting signals. The control card 5 can lose the normal function of the control card, such as the drop of the soldering position of the semiconductor integrated circuit, the active element and the passive element, or the destruction of the insulation due to the vibration generated in the power plant. Furthermore, in the case of a nuclear power plant, maintenance is important because a fatal error may occur if an error occurs by the control card.

The sub rack 3 is provided with a connector for outputting an externally input signal, a signal inputted from another control card 5 or a signal generated from the control card 5, and a ground line for grounding the control card, And a connector for inputting / outputting a power supply signal for operating the control card 5 are connected. Further, a structure and an apparatus for emitting heat generated in the control card 5 can be configured in the sub rack 3. [

3 and 4, the first guide rails 10 are joined at regular intervals to the inner upper end surface of the sub rack 3. The first guide rail 10 has a first insertion groove 12 formed in the longitudinal direction, that is, in the front-rear direction. The first insertion groove 12 is a space formed inside the first guide rail 10 and the bottom surface of the first guide rail 10 is opened. A first hemispherical piece 19 is coupled to the front surface of the first guide rail 10.

The first vibration absorbing pack 13 is inserted into the first insertion groove 12 of the first guide rail 10 and filled with the fluid therein. The fluid 16 filled in the first vibration absorbing pack 13 is preferably a liquid that absorbs vibration, but a gel or gel can also be applied. The first vibration absorbing pack 13 is formed with a first receiving groove 17 of "∩" shape, which is opened substantially downward to receive the upper end portion of the control card 5. A first support frame 18 for fixing the upper end of the control card 5 is coupled to the first receiving groove 17.

The first vibration absorption pack 13 is provided with a first injection port 14 for injecting the fluid 16 and a first stopper 15 for opening and closing the first injection port 14 is applied. The first injection port 14 allows the fluid 16 to be injected into the first vibration absorbing pack 13 or to discharge the infused fluid 16 to supply the fluid from the tank containing the fluid 16 under pressure Or discharged. After the fluid 16 is injected into the first vibration absorbing pack 13, the injection port 14 is closed with the first stopper 15. This is for fixing the control card 5 by the inflation of the fluid 16 filled in the first vibration absorbing pack 13.

The second guide rails 20 are coupled to the inner lower end surface of the sub rack 3 at positions corresponding to the first guide rails 10 at regular intervals. The second guide rail 20 has a second insertion groove 22 formed in the longitudinal direction, that is, in the front-rear direction. The second insertion groove 22 is a space formed inside the second guide rail 20 and the plane of the second guide rail 20 is opened. A second hemispherical piece 29 is joined to the front surface of the second guide rail 20.

The second vibration absorbing pack 23 is inserted into the second insertion groove 22 of the second guide rail 20 and filled with the fluid. The fluid 16 filled in the second vibration absorbing pack 23 is preferably a liquid that absorbs vibration, but a gel or gel can also be applied. The second vibration absorbing pack 23 is formed with a second receiving groove 27 of a "U" -shaped shape which is opened at a substantially lower position to receive the lower end portion of the control card 5. [ A second support frame 28 for fixing the lower end of the control card 5 is coupled to the second receiving groove 27.

The second vibration absorption pack 23 is provided with a second injection port 24 for injecting the fluid 16 and a second stopper 25 for opening and closing the second injection port 24 is applied. The second injection port 24 allows the fluid to be injected into the second vibration absorbing pack 23 or to discharge the injected fluid 16 to supply the fluid from the tank containing the fluid 16 under pressure Or discharged. After the fluid 16 is injected into the second vibration absorbing pack 23, the second injection port 24 is closed by the second cap 25. This is for fixing the control card 5 by expansion of the fluid 16 filled in the second vibration absorbing pack 23.

5, the first fixing grooves 11 are formed on the right and left sides of the bottom surface of the first guide rail 10 and the second fixing grooves 21 are formed on the left and right sides of the second guide rail 20, respectively. An upper end portion and a lower end portion of the first shielding plate 30 and the second shielding plate 31 are coupled between the first fixing groove 11 and the second fixing groove 21 so that electromagnetic waves are introduced into the control card 5 It blocks things.

The operation of the vibration absorbing device of the control card for plant control according to the present invention will be described with reference to Figs. 2 to 5. Fig.

First, a first guide rail 10 is installed at a predetermined interval on the inner upper surface of the sub rack 3 installed in the control panel 1 of the power plant control system. The first guide rails 10 are arranged at regular intervals on the inner lower end surface of the sub rack 3, 2 guide rails 20 are installed. The first vibration absorbing pack 13 is inserted into the first insertion groove 12 of the first guide rail 10 and the second vibration absorbing pack 13 is inserted into the second insertion groove 22 of the second guide rail 20. [ 23 are inserted. At this time, the first vibration absorbing pack 13 and the second vibration absorbing pack 23 may be filled with a certain amount of the fluid 16 or a minimum amount of the fluid 16 may be filled.

The first support frame 18 is coupled to the upper end of the control card 5 mounted on the sub rack 3 and the second support frame 28 is coupled to the lower end of the control card 5. [ The first supporting frame 18 is integrally coupled to the first receiving groove 17 of the first vibration absorbing pack 13 and the second receiving groove 27 of the second vibration absorbing pack 23 The support frame 28 can be integrally coupled.

The control card 5 having the first support frame 18 connected to the upper end thereof and the second support frame 28 connected to the lower end thereof is inserted into the first vibration absorbing pack 13 inserted into the first guide rail 10 And inserted into the second receiving groove 27 of the second vibration absorbing pack 23 inserted into the first receiving groove 17 and the second guide rail 20, respectively. At this time, the upper end portion and the lower end portion of the control card 5 are fixedly supported by fluidity and expansion force of the fluid 16 filled in the first and second vibration absorbing packs 13 and 23, respectively. When the fluid 16 is pushed and injected through the first inlet 14 and the second inlet 24 provided in the first and second vibration absorbing packs 13 and 23, The upper end portion and the lower end portion of the control card 5 are more firmly fixed.

The fluid 16 filled in the first vibration absorbing pack 13 inside the first guide rail 10 of the sub rack 3 and the second vibration absorbing pack 23 inside the second guide rail 20 The vibration transmitted from the outside to the sub rack 3 is absorbed so as not to be transmitted to the control card 5. [ Therefore, the control card 5 is hardly influenced by the external vibration, so that the control card 5 does not cause malfunction or error due to insulation breakdown due to vibration or dropout of the soldering position. This extends the life of the control cards, which are mounted in multiple subracks in the control panel of the plant control system.

The first fixing groove 11 on the left and right sides of the bottom surface of the first guide rail 10 and the second fixing groove 21 on the left and right sides of the second guide rail 20 are provided with a first shielding plate 30, It is possible to prevent the control card 5 from malfunctioning by blocking the electromagnetic wave from flowing into the control card 5 because the plate 31 is coupled thereto.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

1: control panel 2: power module 3: sub rack 5: control card 10, 20: guide rail 11, 21: fixing groove 12, 22: insertion groove 13, 23: vibration absorption pack 14, 24: 16: Fluid 17, 27: Receiving groove 18, 28: Support frame 19, 29: Hemp fabric 30, 31:

Claims (6)

A plurality of sub racks mounted in the control panel of the power plant control system;
A first guide rail coupled to the inner upper end of the sub rack at regular intervals and having a first insertion groove formed in the longitudinal direction;
A first vibration absorbing pack inserted into the first insertion groove of the first guide rail and filled with a fluid therein;
A second guide rail coupled to the inner lower end of the sub rack at a predetermined interval in a position corresponding to the first guide rail and having a second insertion groove formed in the longitudinal direction thereof,
And a second vibration absorbing pack inserted in a second insertion groove of the second guide rail and filled with a fluid therein,
A control card is inserted between the first vibration absorbing pack and the second vibration absorbing pack so that the control card is fixedly supported to the first vibration absorbing pack and the second vibration absorbing pack, Absorbing pack and the second vibration-absorbing pack to be transferred to the control card,
The first vibration absorbing pack has a first receiving groove for receiving the upper end of the control card. The second vibration absorbing pack has a second receiving groove for receiving the lower end of the control card. A second support frame fixedly supporting a lower end of the control card is coupled to the second receiving groove,
An injection port for injecting the fluid into the first vibration absorption pack and the second vibration absorption pack, and a cap for opening and closing the injection port,
Wherein the fluid comprises any one of liquid, gel or gel,
A first fixing groove is formed on each of left and right sides of the bottom surface of the first guide rail and a second fixing groove is formed on each of right and left sides of the second guide rail surface, The shielding plate is coupled to block electromagnetic waves from entering the control card,
Wherein the first guide rail and the second guide rail are integrally formed with the front and rear surfaces of the first guide rail and the second guide rail, respectively. delete delete delete delete delete

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