JP2014223582A - Filter device and replacement method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit type filter device and an attachment method thereof capable of easily attaching and replacing the whole unit type filter device to a wall surface.SOLUTION: The filter device is provided in a wind channel part for introducing or exhausting air between inner-outer parts of a building, and the filter device is arranged in respective square parts of a square-like frame body constituted in the wind channel part, and a casing for storing a filter on its inside is fixed to the square-like frame body by a belt having one end fixed to the square-like frame body and having the other end engaged with the square-like frame body.

Description

  The present invention relates to a filter device provided in a wind tunnel, and more particularly to a filter device that allows a filter device body to be replaced.

  For example, when supplying outdoor air into a nuclear power plant or exhausting indoor air to the outside, air is supplied and exhausted through a high-performance filter or the like. However, since the pressure loss due to adhesion of dust and the like increases, the filter has a limited operation time, and needs to be replaced and cleaned at appropriate times.

  It is necessary to replace a general filter at a cycle of about once a year. Specifically, for example, a filter in a nuclear building often has multiple filters installed at each inlet or outlet, and in the replacement work, a person goes close to the filter device and replaces it manually. It is necessary to do work.

  However, under the assumption that an accident will occur in a nuclear power plant and work will be carried out at a higher dose, there are restrictions on the work time, so it is necessary to replace multiple filters in as short a time as possible. . In order to shorten the work time, it is indispensable to use an exchange tool that allows easy replacement work and to improve the filter mounting structure.

  In response to such a shortening request, Patent Document 1 provides “a filter fixing structure capable of easily and reliably fixing a filter to an outer frame without requiring a specific tool for filter replacement. Is described.

  Patent Document 2 describes that “a filter mounting structure that can easily and surely attach these filters without providing a specific tool for replacing two or more types of filters is provided”. Has been.

JP 2002-58933 A JP 2011-47603 A

  In the method of Patent Document 1, the filter outer frame is fixed to the air supply port or the exhaust port from the beginning, and the replacement work is carried out by the worker at the position of the mounting outer frame and fixed in the mounting outer frame. The filter is removed, the carried filter is attached and fixed, and the removed filter is carried out. The technique of Patent Document 2 basically follows the same procedure as that of Patent Document 1, but the filter to be removed in this case is configured in multiple stages.

  However, as a practical matter, this work is generally a work at height and is performed on a scaffold. In addition, the number of replacements, the number of replacement filters is large, the filter has a multi-stage structure, and the filter mounting structure is not necessarily simple. In addition, there are many standards, dimensions, and prices for the filter to be replaced, and there is a desire to use a general-purpose product if possible.

  Considering these viewpoints, it is conceivable that the mounting outer frame for storing the filter is replaced instead of the conventional idea of replacing the filter. That is, it is an idea that the unit is configured up to the outer frame for housing the filter and is replaced in units of the unit type filter device.

  Therefore, the present invention provides a filter device in which the entire unit type filter device can be easily attached to a wall surface and exchanged.

  From the above, the present invention is a filter device provided in a wind tunnel portion for introducing or discharging air between the inside and outside of a building, and the filter device is a grid-like frame body configured in the wind tunnel portion. A housing that is placed in each cell and contains a filter inside, and is fixed to the cell frame by a belt that has one end fixed to the cell frame and the other end engaged with the cell frame. It is characterized by being.

  According to the present invention, the entire unit type filter device can be easily attached to the wall surface and replaced with the structure of the filter device in which the outer frame is fixed to the wall.

The figure which shows the general structure of the building structure which has an air supply opening. The top view which shows the example of arrangement | positioning of a unit attachment frame and a unit type filter apparatus. The perspective view which shows the horizontal belt fixing system of a unit type filter apparatus. The perspective view which shows the vertical belt fixing system of a unit type filter apparatus. The side view of the fixing method by a vertical belt fixing system. The perspective view which shows the outline | summary of the fixing method of a belt width. The enlarged view of a belt width fixing member. Side view of a flat plate with a guide. The schematic diagram of the vertical belt fixation system using a flat plate with a guide. Schematic of the attachment method using a flat plate and a long bolt.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the first embodiment, a mounting structure of a unit type filter device using a belt will be described. First, FIG. 1 shows a general configuration of a building structure having an air supply port. A building wall 3 such as a nuclear power plant is provided with an opening 4 for taking in outside air. The taken-in outside air is guided to the filter chamber 5, sucked by the fan 2 in the power chamber 6 through the unit filter device 1, and provided to the building 7 as the air supply A. In the filter chamber 5, a plurality of unit type filter devices 1 are fixed to the unit mounting frame 8, so that the outside air does not flow into the fan 2 unless it passes through any of the unit type filter devices 1. The inside is sealed. In this case, the air flow path may be referred to as a wind tunnel.

  FIG. 2 is a plan view showing an arrangement example of the unit mounting frame 8 and the unit type filter device 1. The unit mounting frame 8 is, for example, a frame body having a width of 10 cm configured in a grid shape, and the interval between the grids is approximately 70 to 80 cm. The unit type filter device 1 is disposed in the space of the mesh. Since the vertical and horizontal dimensions of the unit type filter device 1 are designed to be larger than the distance between the cells, air does not leak from the unit mounting frame 8.

  As described above, the unit type filter device 1 for removing dust and radioactive substances in the air is vertically and horizontally on the downstream side of the hole (wind tunnel) through which air that needs ventilation passes through the wall of the building. About 20 are installed. In the replacement work, 20 unit type filter devices 1 themselves are replaced with new unit type filter devices 1. For this reason, in the present invention, a configuration in which the unit type filter device 1 itself is attached to the unit attachment frame 8 is proposed below.

  As shown in FIG. 3 and the like, the unit type filter device 1 has a housing structure corresponding to the cell formed by the unit mounting frame 8. A filter of a necessary size is installed in the housing in advance. FIG. 3 is a perspective view showing a lateral belt fixing method of the unit type filter device. In the mounting example of FIG. 3, the unit type filter device 1 is fixedly installed in the lateral direction by a plurality of belts 30 at the upper and lower portions thereof. Here, this method is referred to as a lateral belt fixing method. The unit type filter device 1 is fixed to the unit mounting frame 8 by fixing the left and right ends of the belt 30 to a belt fixing bracket 40 fixed to the wall surface (unit mounting frame 8).

  FIG. 4 is a perspective view showing a vertical belt fixing method of the unit type filter device. In the attachment example of FIG. 4, the unit type filter device 1 is fixedly installed in the height direction by a plurality of belts 30 on the left and right sides. Here, this method is referred to as a vertical belt fixing method. The unit type filter device 1 is fixed to the unit mounting frame 8 by fixing the upper and lower ends of the belt 30 to the belt fixing bracket 40 fixed to the wall surface (unit mounting frame 8).

  3 and 4, when the unit type filter device 1 is fixed to the unit mounting frame 8 by installing a plurality of belts 30 in the left-right direction or the vertical direction, In order not to obstruct the flow, the most efficient method is to fix two places on both sides of the peripheral portion of the unit filter device 1 having a box shape.

  Further, as the belt 30 used for fixing, it is preferable to use a belt whose length can be adjusted, such as a commercially available belt clamping machine. The outer dimensions of the unit type filter device 1 need to be larger than the hole (wind tunnel) on the wall surface. In the present invention, a unit type filter device having a vertical and horizontal dimension of about 700 mm to 800 mm and a weight of about 5 to 10 kg is assumed. If this is the case, an operator removes the belt alone and replaces the unit type filter. Thus, it is possible to perform the work of fixing to the wall surface with the belt again.

  In the second embodiment, a mounting device for the unit type filter device 1 of the vertical belt type shown in FIG. 5 will be described in more detail. FIG. 5 shows a side view of the fixing method using the vertical belt fixing method.

  In the example of FIG. 5, one side of the belt 30 is always fixed to the lower fixing bracket 45 attached to the wall surface (unit mounting frame 8). The tip of the other belt has a hook-like shape, and the entire filter device is fixed by hooking the hook 70 on the upper fixing fitting 46 fixed to the wall surface. The end of the belt 30 is always fixed to the lower fixing bracket 45, and the replacement procedure of removing the hook 70 from the upper fixing bracket 46 is followed to improve work efficiency and prevent the filter device 1 from dropping during the replacement operation. Can do. This fixing method can also be employed in the lateral belt method.

  As described above, in the present invention, the filter device is a casing that is disposed in each grid portion of the grid-shaped frame body that is formed in the wind tunnel portion, and that houses the filter therein, and one end is fixed to the grid-shaped frame body. The other end is fixed to the cell-like frame by a belt that engages the cell-like frame with a hook 70 or the like.

  The belt 30 is preferably provided with a length adjusting mechanism such as a belt loader in a part of the belt 30. In an operation state in which the hook 70 is hooked on the upper fixing fitting 46 fixed to the wall surface, the length adjusting mechanism is loosened, and after the hook is tightened, the length adjusting mechanism is tightened and fixed.

  In the third embodiment, a method of keeping a plurality of belt widths constant when the vertical belt method of the unit type filter device mounting method is employed will be described. 6 is a perspective view showing an outline of a belt width fixing method, and FIG. 7 is an enlarged view of a belt width fixing member.

  When the filter device 1 is fixed to the unit mounting frame 8 with the belt 30, it is necessary to keep the belt 30 parallel to the edge of the filter device 1 and always fix the belt device 30 to the unit mounting frame 8 at the same position.

  Therefore, in the third embodiment, as shown in FIG. 6, the belt width fixing part 80 is attached to the corner of the lower side of the unit type filter device where the worker performs the work, thereby preventing the belt width from shifting during the work. Further, by using an L-shaped fixing member having a right-angle cross section, it is easy to determine at which position on the belt 30 the unit type filter device 1 should be arranged. Furthermore, the stability of the filter apparatus fixation after attachment improves because the area which the filter apparatus 1 presses increases.

  As shown in an enlarged view of FIG. 7, the belt width fixing component 80 is an L-shaped plate member in the horizontal width direction of the filter device 1. 90 is provided. Since the two belts 30 are always arranged so as to pass through the belt through hole 90, the lateral width distance between the two belts 30 is kept constant.

  Note that the belt through hole 90 is not a simple passage hole, but is preferably provided with a binding mechanism. For example, it is desirable that the belt 30 is passed from the lower direction, once guided to the side surface, guided again to the inside, and then pulled out from above so that it is difficult to be pulled out and easy to tighten.

  Further, the horizontal member 82 of the belt width fixing component 80 which is an L-shaped plate material is convenient for supporting the lower corner of the filter device 1.

  As described above, the belt through hole 90 of the third embodiment shown in FIG. 7 is formed outside the belt width fixing component 80, and the belt fixing component 80 and the belt 30 are fixed by passing the belt 30 used for fixing. It has a structure. As an attachment method, first, the unit type filter device 1 is replaced by removing the upper hook 70. Next, a belt width fixing component 80 which is an L-shaped plate material is fitted to the lower corner of the unit type filter device 1. Finally, a hook 70 is hooked on the upper fixing metal 46 to fix the unit type filter device.

  Although the lower part of the unit type filter apparatus of Example 3 is fixed using a fixing member, since the upper part of the filter apparatus is fixed only by the belt, the position fixing is unstable. Therefore, in Example 4, as shown in FIGS. 8 and 9, by installing a flat plate with a guide in the same vertical direction as the belt, it is possible to accurately install the filter device at the position of the hole (wind tunnel) on the wall surface. To do. FIG. 8 shows a side view of a flat plate with guide, and FIG. 9 shows a schematic diagram of a vertical belt fixing system using the flat plate with guide.

  The flat plate 10 with a guide in FIG. 8 is a component that prevents the filter device 1 from shifting up and down. As a structure of the flat plate 10 with a guide, there is a claw 11 for preventing displacement at a position larger than the outer shape of the filter device 1, and the filter device can be fixed to the unit mounting frame 8 more stably. Moreover, the hole which lets a belt pass up and down is made in the outer side of the tab of a flat plate with a guide. As in the third embodiment, after attaching the outer frame of the filter device 1 to the guide-equipped flat plate 10, the unit type filter device 1 is fixed by hooking a hook on the upper fixing fitting 46.

  Example 5 demonstrates the example which fixes the unit type filter apparatus 1 to the unit attachment frame 8 using a flat plate for fixation and a long volt | bolt. FIG. 10 shows a schematic diagram of a mounting method using a flat plate and a long bolt.

  As a structure in this case, holes for passing the long bolts 13 are formed at both ends of the plurality of fixing flat plates 12, and the filter device 1 is fixed by tightening the long bolts 13 to the unit mounting frame 8. . Further, when the long bolt 13 is fastened to the wall surface, the long bolt 13 is fastened to the unit mounting frame 8 by turning the handle 14 integrated with the long bolt 13 in order to perform the work without using a tool such as a screwdriver.

  The filter device mounting method using the flat plate 12 and the long bolt 13 can be carried out even when the flat plate is installed vertically as in FIG. Further, although it takes more time to work than the method using a belt, there is an advantage that the pressing force to the unit mounting frame 8 is strong.

  According to the present invention described above, the height work on the scaffold is only the removal and attachment of the housing (unit type filter device 1), and the complicated work associated with the replacement of the filter does not occur. For this reason, it is possible to work safely and quickly. Moreover, it is only necessary to replace the filter in advance, so that a general-purpose product can be used easily.

1: Unit type filter device 2: Fan 3: Building wall 4: Opening part 5 for taking in outside air: Filter room 6: Power room 7: Building 8: Unit mounting frame 10: Flat plate 11 with guide 11: Claw 12: For fixing Flat plate 13: Long bolt 14: Handle 30: Belt 40: Belt fixing bracket 45: Lower fixing bracket 46: Upper fixing bracket 70: Hook 80: Belt width fixing component (L-shaped plate material)
81: Height member of L-shaped plate member 82: Horizontal member of L-shaped plate member 90: Belt through hole

Claims (8)

A filter device provided in a wind tunnel portion for introducing or discharging air between the inside and outside of a building,
The filter device is a casing that is disposed in each grid part of the grid-like frame body configured in the wind tunnel part, and that houses the filter therein, and has one end fixed to the grid-like frame body and the other end. A filter device, wherein the filter device is fixed to the grid-like frame by a belt that engages with the grid-like frame. The filter device according to claim 1,
In order to replace the filter, the filter device itself is removed, and a new filter device is fixed to the grid frame by the belt. The filter device according to claim 1 or 2,
2. The filter device according to claim 1, wherein the belt fixes two portions on both sides of the peripheral portion of the filter device which is a casing. The filter device according to any one of claims 1 to 3,
The other end of the belt has a hook-like shape at the tip of the belt, and the filter device is fixed by hooking the tip of the belt on a fixing bracket attached to the grid-like frame. Filter device. The filter device according to any one of claims 1 to 4,
A filter device comprising a fixing component having a role of maintaining a constant belt width between the filter device and the belt at a corner of the filter device on a side where an operator works. The filter device according to any one of claims 1 to 5,
A filter device comprising a guide-equipped flat plate for fixing the upper and lower positions of the filter device. The filter device according to any one of claims 1 to 6,
A filter device, wherein a filter device is fixed to a wall surface using a flat plate and a long bolt instead of the belt. A method of replacing a filter device provided in a wind tunnel part for introducing or discharging air between inside and outside of a building,
The filter device is a casing that is disposed in each grid part of the grid-like frame body configured in the wind tunnel part, and that houses the filter therein, and has one end fixed to the grid-like frame body and the other end. It is fixed to the grid-shaped frame by a belt that engages with the grid-shaped frame,
A method for replacing a filter device, comprising: removing the belt to replace the filter, removing the filter device itself, and fixing a new filter device to the grid-like frame with the belt.

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