JP2017121122A - Control panel and assembling method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control panel which can be assembled freely and easily.SOLUTION: A control panel 30 according to an embodiment comprises: as a plurality of kinds of electric devices, a CPU 1, an IO unit 2 and a low-voltage power supply device 3; conducting wires connecting among the CPU 1, IO unit 2 and low-voltage power supply device 3 as the plurality of kinds of electric devices; a base frame 20 set on a floor face 35; a plurality of attachment frames 15 spaced part from each other and upright provided on the base frame 20, and arranged to accommodate the conducting wires; and a plurality of stages of control units 10 which contain the CPU 1, IO unit 2 and low-voltage power supply device 3 as the plurality of kinds of electric devices, respectively, so that each control unit 10 contains a different electric device, which are each unitized as a portable body, and which are attached to and among the plurality of attachment frames 15 so that they are arrayed in line along an up-and-down direction.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a control panel installed in a plant system of a power plant, for example, and an assembling method thereof.

  Generally, when a control panel of a power plant is updated to a new control panel, the installation location of the control panel is limited. Specifically, the control panel of the power plant has many restrictions on the layout, such as the necessity to install it using the minimum necessary space and space.

  In addition, in a nuclear power plant, an earthquake resistant grade is set for the control panel according to the importance of the control target, and the earthquake resistance for the control panel is required.

  As a technique for updating the control panel without removing the casing of the existing control panel, there is an update method in which a rack structure product smaller in size than the control panel is mainly stored in the existing control panel. In this updating method, when the front edge of the control panel is small, there is a restriction on the size of the rack structure product stored in the control panel, and it may not be possible to store necessary and sufficient electrical equipment.

  In addition, when the rack structure product is large and heavy, the rack structure product is not easily loaded and unloaded, and it may be difficult to store it in the control panel. Conceivable. For this reason, the advantage of diverting the case of the existing control panel is halved.

JP 2009-232553 A

  By the way, in the technology to update the existing control panel, the conventional control panel is an integrated type in which electrical equipment is directly attached to the housing, and therefore, a large-scale construction is required to carry in and install a newly installed control panel. It was. Even if it is not a technology to update the control panel, the installation space for the newly installed control panel is severe as described above, so the control panel is designed each time the control panel is updated. It was.

  The problem to be solved by the present embodiment is to provide a control panel that can be assembled freely and easily and an assembling method thereof.

  In order to solve the above problems, a control panel according to the present embodiment includes a plurality of types of electrical equipment, a conductive wire connecting the plurality of types of electrical equipment, a base frame installed on a floor surface, A plurality of attachment frames that are erected on the base frame with a space therebetween and can store the conductive wires, and different types of electrical devices among the plurality of types of electrical devices are stored, and can be unitized. And a control unit that is a portable type and is mounted in a plurality of stages in the vertical direction between the attachment frames.

  The method for assembling the control panel according to the present embodiment includes a step of installing a base frame on the floor and a plurality of attachment frames capable of storing conductors connecting between a plurality of types of electrical equipment, spaced from the base frame. A plurality of types of electrical devices are stored between the plurality of attachment frames, and the control units that are unitized and made portable are respectively installed vertically. Attaching a plurality of steps in the direction.

  According to the present embodiment, the control panel can be assembled freely and easily.

It is a schematic perspective view which shows the whole structure of the control panel of 1st Embodiment. It is a perspective view which shows the principal part of the example of a connection of the control unit of the control panel of 1st Embodiment, and an attachment frame. It is a perspective view which shows the principal part of the other connection example of the control unit and attachment frame of the control panel of 1st Embodiment. It is a perspective view which shows the principal part of the state which pulled out the control unit to the front surface in the control panel of 1st Embodiment. It is a perspective view which shows the principal part of the example of attachment of the attachment frame to a base frame in the control panel of 1st Embodiment. It is a perspective view which shows the example which connected multiple control units in the horizontal direction in the control panel of 1st Embodiment. It is a schematic front view which shows the other example of attachment of the attachment frame to a base frame in the control panel of 1st Embodiment. It is a schematic front view which shows the example which connected many control units horizontally and up and down in the control panel of 1st Embodiment. It is a perspective view which shows the fixing mechanism when the control unit is piled up in the control panel of 2nd Embodiment. It is a perspective view which shows the fixing mechanism of the control unit to the housing | casing of the existing control board in the control board of 2nd Embodiment.

  Hereinafter, the control panel and its assembling method according to the present embodiment will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic perspective view showing the overall structure of the control panel of the first embodiment. FIG. 2 is a perspective view showing a main part of a connection example between the control unit of the control panel and the attachment frame of the first embodiment. FIG. 3 is a perspective view showing a main part of another example of connection between the control unit of the control panel and the attachment frame of the first embodiment. FIG. 4 is a perspective view showing a main part in a state in which the control unit is pulled out to the front surface in the control panel of the first embodiment. FIG. 5 is a perspective view showing a main part of an example of attachment of the attachment frame to the base frame in the control panel of the first embodiment.

  In addition, this embodiment demonstrates the example applied to the control panel installed in the plant system of a nuclear power plant. In the following description, the control unit 10 of the control panel 30 shown in FIG. 1 will be described with the floor frame 18 side as the front side, the opposite side as the rear side, and the other side as the side side. Similarly, the floor frame 18 will be described on the assumption that the side from which the IO cable 4 is pulled out is the front surface side, the base frame 20 side is the rear surface side, and the other surface is the side surface side.

  As shown in FIG. 1, the main electrical devices installed in the control panel 30 include, for example, a CPU 1, an IO unit 2, and a low voltage power supply device 3. The CPU 1 is a program controller that controls and calculates field devices. The IO unit 2 is connected to the CPU 1 and processes an input signal from the field device and outputs an operation command signal to the field device. The low voltage power supply device 3 supplies a power supply current to each of the CPU 1 and the IO unit 2.

  A floor frame 18 is installed on the floor surface 35 on the front side of the control panel 30. The IO cable 4 is laid in the field (field) of the plant system of the nuclear power plant and drawn into the floor frame 18. The floor surface frame 18 is formed in a hollow rectangular plate, and the connector 5 is installed therein. The IO cable 4 is pulled out from the floor surface 35 and connected to the connector 5 in the floor surface frame 18. Instead of the connector 5, the IO cable 4 may be connected to an external connection terminal block. The connector 5 is configured to be drawn out from the floor frame 18 to the outside.

  The floor surface frame 18 is installed on the floor surface 35 with slope frames 19 adjacent to both side surfaces thereof. These slope frames 19 have the same height as the floor frame 18 on the floor frame 18 side, and are inclined so as to gradually become lower as the distance from the floor frame 18 increases. By installing these slope frames 19, the step between the floor frame 18 and the floor surface 35 is eliminated. A base frame 20 is installed adjacent to a floor surface 35 on the rear side of the floor frame 18. The base frame 20 is formed in a rectangular frame shape.

  The base frame 20 has a lower surface in contact with the floor surface 35 and an upper surface set to be substantially the same height as the floor surface frame 18. The connector 5 may be installed not in the floor frame 18 but in the base frame 20.

  The base frame 20 has attachment frames 15 attached to both sides in the longitudinal direction. That is, the attachment frame 15 is erected with an interval from the base frame 20. Inside the attachment frame 15, the control unit 10 is attached in three stages in the vertical direction. In these three control units 10 in the vertical direction, a low-voltage power supply device 3, a CPU 1, and an IO unit 2 are installed in order from the top.

  As shown in FIG. 2, each control unit 10 is assembled into a three-dimensional frame by welding or rivets L-shaped metal angle members. Each control unit 10 is a portable type having a size and weight that can be easily carried. Specifically, for example, the width, depth, and height are each 60 cm and the weight is about 20 kg. In principle, the frames of the control units 10 of the present embodiment have the same shape and the same dimensions. The CPU 1, the IO unit 2, and the low voltage power supply device 3 are separately housed using the frames of the respective control units 10.

  In addition, as long as each control unit 10 is portable, according to the magnitude | size of the electric equipment to attach, a mutually different shape and dimension may be sufficient. The frame of the control unit 10 may be made of a general-purpose aluminum frame. Furthermore, in FIG. 1, the example in which the control unit 10 is installed in three stages in the vertical direction has been described. You may make it connect with the row | line | column.

  As shown in FIG. 2, two upper and lower sliders 11 a are fixed in parallel on both side surfaces of each control unit 10. On both surfaces of each attachment frame 15, slide rails 11 b are fixed at positions where each control unit 10 is attached. The slider 11 a of each control unit 10 is slidably mounted on the slide rail 11 b of the attachment frame 15. Thereby, the control unit 10 is attached to the attachment frame 15. Therefore, each control unit 10 can be pulled out to the front side by sliding the slider 11a to the front side along the slide rail 11b.

  In FIG. 2, each control unit 10 is pulled out from the attachment frame 15, but each control unit 10 may be supported on the attachment frame 15 without pulling out each control unit 10.

  Specifically, as shown in FIG. 3, each attachment frame 15 has two hooking holes 23 for one control unit 10 on the inner surface thereof. Two hooks 24 that can be hooked in the hooking holes 23 are fixed to both side surfaces of each control unit 10. The weight of the control unit 10 can be supported by hooking the latch 24 of each control unit 10 into the hooking hole 23 of the attachment frame 15.

  As the attachment mechanism of each control unit 10 to each attachment frame 15, for example, a patch member lock or fastener lock, a ball catch, a fastening member such as a bolt / nut, etc., in addition to the magnet catch 7 as the attachment mechanism shown in FIG. May be fixed.

  As shown in FIG. 4, each control unit 10 has long holes 26 formed on both side surfaces. One end of the support frame 6 is slidably attached to these long holes 26. The other end of the support frame 6 is swingably attached to the attachment frame 15. Thereby, when the control unit 10 is pulled out to the front side, the support unit 6 can support the control unit 10.

  As shown in FIG. 3, each attachment frame 15 is formed in a hollow structure. The internal space of each attachment frame 15 becomes a space for adjusting the line by passing the lead wire 14 for electrically connecting the electric devices installed in each control unit 10. Unit interface connectors 8 are attached to both side surfaces of each control unit 10. The unit interface connector 8 is electrically connected to the conductive wire 14 in the attachment frame 15 when the control unit 10 is attached to the attachment frame 15.

  As shown in FIG. 2, a wiring access window 13 having a size that can be accessed by a human hand is provided on the front side of the attachment frame 15. By providing the wiring access window 13, it is possible to open and close the wiring access window 13 even after the attachment frame 15 is installed, and to attach and detach devices such as the unit interface connector 8 during maintenance.

  As shown in FIG. 2, the attachment frame 15 has the slide rails 11 b for attaching the control unit 10 fixed to both side surfaces. However, when the control unit 10 is not connected, the attachment frame 15 is further attached to the side surface of the attachment frame 15. The side cover 12 is attached.

  As shown in FIG. 5, a plurality of positioning guide pins 9 are implanted on the upper surface of the base frame 20. The attachment frame 15 can be fixed to the base frame 20 by inserting a mounting hole (not shown) formed at the lower end of the attachment frame 15 into the positioning guide pins 9. Thereby, the attachment frame 15 can be erected on the base frame 20.

(Work)
Next, the operation of the control panel 30 of this embodiment will be described.

  First, a control signal indicating an operation state of field equipment in the plant system is input to the control panel 30 via the IO cable 4. In the control panel 30, a control signal is once obtained by the connector 5 (or an external connection terminal block), and is taken into the CPU 1 from here via a not-shown internal wiring and the IO unit 2.

  The CPU 1 performs a control calculation based on the input control signal, and outputs an operation command signal to the field device from the IO unit 2 to the field device through a route opposite to the control signal input as described above. Control the on-site equipment.

  To assemble the control panel 30 of the present embodiment, first, the base frame 20 is installed on the floor surface in the plant system of the nuclear power plant.

  Then, two attachment frames 15 are inserted into the base frame 20 by inserting mounting holes (not shown) formed at the lower ends of the attachment frames 15 into the plurality of positioning guide pins 9 planted at both ends of the base frame 20. Are installed at intervals.

  Next, the assembly is completed by inserting and attaching the sliders 11a of the control unit 10 to the slide rails 11b between the two attachment frames 15, respectively.

  In general, an electrical device that performs these controls is attached to the inside of the casing of the control panel using a surface such as a side surface or a back surface. This is because an operator can enter the control panel at the time of assembling and maintenance, and can be easily accessed. In addition, since the electrical device is attached using a surface, a simple route can be secured using the surface for wiring between the electrical devices.

  On the other hand, in the present embodiment, the CPU 1, the IO unit 2, and the low-voltage power supply device 3 are separately stored using the frames of the control units 10. In the present embodiment, the control panel 30 can be formed by combining the control units 10 having a size that can be easily carried. Therefore, it becomes possible to simplify the carrying-in and installation work of the control panel 30.

  In a general control panel, since the IO cable 4 and the connector 5 for connecting them are stored, a relatively large storage space must be secured. However, in this embodiment, the control panel 30 is installed in a limited space in the building by housing the IO cable 4 and the connector 5 connecting them in the floor frame 18 as shown in FIG. Is possible.

  When the control panel 30 is updated, the control unit 10 and the attachment frame 15 can be separated from each other. Therefore, after the existing casing is diverted and the electrical equipment in the existing casing is removed, the control unit 10 and the attachment are attached. The frame 15 can be carried into the control panel 30 and these can be assembled in the control panel 30. Therefore, the control panel 30 can be easily updated after diverting the existing casing.

  As described above, according to the present embodiment, the plurality of attachment frames 15 that are erected on the base frame 20 with a space therebetween and that can store the conductive wires that connect the plurality of types of electrical devices, and the plurality of types of electrical devices. Among the devices, different electrical devices are respectively housed, unitized into a portable type, and provided with a control unit 10 that is mounted between the attachment frames 15 in a plurality of stages in the vertical direction. As a result, the control panel 30 can be assembled freely and easily.

  In the present embodiment, the slider 11a of each control unit 10 is slidably attached to the slide rail 11b of the attachment frame 15 as shown in FIG. 2, or the pulling of the attachment frame 15 as shown in FIG. The control unit 10 and the attachment frame 15 can be connected without using a tool by hooking the latch 24 of each control unit 10 on the latch hole 23. As a result, the control panel 30 can be assembled without using a tool, and the control panel 30 can be installed more easily.

  Furthermore, in the present embodiment, as shown in FIG. 5, the attachment frame 15 can be easily positioned by inserting the lower end of the attachment frame 15 into the positioning guide pins 9 provided on the base frame 20, and assembly is possible. Workability can be improved.

  In this embodiment, when the control unit 10 is pulled out to the front side as shown in FIG. 4, the control unit 10 is supported by the support frame 6 so that maintenance and inspection can be performed after the control unit 10 is pulled out to the front side. It becomes. Therefore, the workability of maintenance inspection can be improved.

  Next, a configuration of a modified example of the present embodiment will be described.

  FIG. 6 is a perspective view showing an example in which a plurality of control units are connected in the horizontal direction in the control panel of the first embodiment. FIG. 7 is a schematic front view showing another example of attachment of the attachment frame to the base frame in the control panel of the first embodiment. FIG. 8 is a schematic front view showing an example in which a large number of control units are connected horizontally and vertically in the control panel of the first embodiment.

  In addition, the same code | symbol is attached | subjected to the part which is the same as that of the said embodiment, or it corresponds, and the overlapping description is abbreviate | omitted.

  In the modification shown in FIG. 6, the control units 10 are installed in three stages in the vertical direction and in two rows in the horizontal direction. Further, in this modification, the reinforcing beam member 16 is bridged in the horizontal direction on the upper surface of the attachment frame 15, thereby firmly integrating the control units 10 installed in three rows in the vertical direction and two rows in the horizontal direction. Yes.

  Here, the attachment frame 15 can also be installed in a form sandwiched between the plurality of control units 10. The reinforcing beam 16 can be connected to the intermediate attachment frame 15. Further, the front side (or the rear side) of the control panel 30 can be connected in the horizontal direction with the reinforcing beam member 16. For the reinforcing beam member 16, for example, an L-shaped metal angle member, a metal plate member, or the like is used.

  In the modification of this embodiment, as shown in FIG. 6, on the upper surface of the attachment frame 15, the reinforcing beam members 16 are bridged in the horizontal direction, and the attachment frames 15 are connected to each other via the reinforcing beam members 16. Yes. Thereby, the whole rigidity can be ensured. In this case, it is difficult for the attachment frame 15 to ensure seismic resistance, that is, ensure rigidity only by connecting the divided control units 10.

  In the modification shown in FIG. 7, a seismic isolation table 17 having a seismic isolation function in the horizontal direction is installed between the attachment frame 15 and the base frame 20. Therefore, the seismic isolation table 17 can absorb the vibration load applied to the control panel 30 due to the earthquake. Thereby, the earthquake-resistant grade of the control panel 30 can be raised.

  The attachment frame 15 is structured to be connected to both the left and right side surfaces of the control unit 10. Therefore, in the modification shown in FIG. 8, for example, the control units 10 are installed in three rows in the horizontal direction, and are installed in three, two, and one step in the vertical direction. Thereby, since the control panel 30 can be formed in a complicated shape, the control panel 30 can be installed using a limited installation space and space. Therefore, the control panel 30 can be freely assembled using the limited space and space in the power plant, and the degree of design freedom can be improved.

(Second Embodiment)
FIG. 9 is a perspective view showing a fixing mechanism when control units are stacked in the control panel of the second embodiment. FIG. 10 is a perspective view showing a fixing mechanism of the control unit to the casing of the existing control panel in the control panel of the second embodiment.

  In the present embodiment, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  The shape of the control unit 10 of the present embodiment is the same as that of the first embodiment. As shown in FIG. 9, in this embodiment, when the control units 10 are stacked in four stages, the control unit 10 is fixed to the base frame 20 by pulling the attachment frame 15 with a backstay 21 as a fixing member. The base frame 20 is formed to have a width and depth larger than those of the control unit 10.

  The back stay 21 is provided with a threaded portion so that the entire length can be expanded and contracted, and when the final length is determined at the installation location, the back stay 21 is fixed by bolting or pinning. To do. Thereby, a trapezoidal ramen structure can be formed as a whole.

  In this embodiment, an example using the backstay 21 as a fixing member has been described. However, the present invention is not limited to this, and a fixing member such as a turnbuckle may be used.

  As shown in FIG. 10, in this embodiment, when the control units 10 are stacked in three stages, a tension member 25 is installed between the upper portion of the attachment frame 15 and the inner surface of the casing 22 of the existing control panel. The control unit 10 stacked in three stages is fixed.

  Therefore, in this embodiment, the rigidity as a whole can be ensured by connecting the attachment frame 15 and the base frame 20 to form a trapezoidal ramen structure as shown in FIG. As a result, the earthquake resistance can be improved.

  Further, in the present embodiment, as shown in FIG. 10, on the assumption that the rigidity of the casing 22 of the existing control panel is secured, a member that stretches the upper portion of the attachment frame 15 to the casing 22 of the existing control panel. By fixing through 25, the housing 22 can be used and the rigidity can be ensured regardless of the shape of the housing 22 of the existing control panel.

(Other embodiments)
Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the claims and the equivalent scope thereof.

  In each of the above embodiments, the example applied to the control panel installed in the plant system of the nuclear power plant has been described. However, the present invention is not limited to this, and the present invention is applicable to a control panel installed in another plant system such as a thermal power plant. Is also possible.

  DESCRIPTION OF SYMBOLS 1 ... CPU (electric equipment), 2 ... IO unit (electric equipment), 3 ... Low voltage power supply (electric equipment), 4 ... IO cable, 5 ... Connector, 6 ... Support frame, 7 ... Magnet catch, 8 ... Unit interface Connector, 9 ... Guide pin for positioning, 10 ... Control unit, 11a ... Slider, 11b ... Slide rail, 12 ... Side cover, 13 ... Window for wiring access, 14 ... Conductor, 15 ... Attachment frame, 16 ... Beam for reinforcement 17 ... Seismic isolation table, 18 ... Floor frame, 19 ... Slope frame, 20 ... Base frame, 21 ... Backstay (fixing member), 22 ... Housing, 23 ... Hook hole, 24 ... Holding bracket, 25 ... strut member, 26 ... long hole, 30 ... control panel, 35 ... floor surface

Claims (9)

Multiple types of electrical equipment,
A conductive wire connecting the plurality of types of electrical devices;
A base frame installed on the floor;
A plurality of attachment frames that are erected on the base frame at intervals, and that can store the conductive wires;
A control unit that houses different types of electrical devices from among the plurality of types of electrical devices, is unitized and portable, and is mounted in a plurality of stages in the vertical direction between the attachment frames;
A control panel comprising: A slide rail fixed to both side surfaces of the attachment frame; and a slider fixed to both side surfaces of the control unit;
The control panel according to claim 1, wherein the slider is slidably mounted on the slide rail, and the control unit is attached to the attachment frame. A long hole is formed on the side surface of the control unit,
A support frame that is slidably attached at one end to the elongated hole and slidably attached at the other end to the attachment frame;
The control panel according to claim 1 or 2, wherein when the control unit is pulled out from the attachment frame, the control unit is supported by the support frame.   The control unit is arranged in multiple rows in the horizontal direction via the attachment frame, and further includes a reinforcing beam member spanned between the attachment frame and the control unit. The control panel according to one item.   The base frame has a plurality of positioning guide pins planted on an upper surface thereof, and a lower end of the attachment frame is inserted into the guide pins, and the attachment frame is fixed to the base frame. The control panel according to any one of 1 to 4.   The control panel according to any one of claims 1 to 5, further comprising a seismic isolation table installed between the attachment frame and the base frame. A floor frame installed adjacent to the base frame;
A connector for connecting with a cable from a field device in the floor frame;
The control panel according to any one of claims 1 to 6, further comprising:   The control panel according to any one of claims 1 to 7, further comprising a fixing member for fixing the attachment frame to the base frame. Installing a base frame on the floor; and
A step of standing a plurality of attachment frames that are capable of storing a conductive wire connecting a plurality of types of electrical equipment with an interval from the base frame;
A step of storing a plurality of different types of electric devices among the plurality of types of electric devices between the plurality of attachment frames, and attaching a plurality of steps in the vertical direction to the control units that are unitized and made portable When,
A method for assembling a control panel, comprising:

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