JP4592932B2 - Filter member suspension jig and suspension support method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hanging jig for a filter member and a hanging support method used for filtration in general industrial condensate, clean water, industrial water, industrial wastewater, power plant water, boiler condensate treatment, and the like.
[0002]
[Prior art]
For example, in a thermal power plant, steam generated in a boiler is sent in the order of a high-pressure turbine and then a low-pressure turbine, the generator is rotated in each turbine to generate power, and the steam after power generation is cooled by a condenser and recovered as condensate. It is sent to the water purification system and used repeatedly. In the condensate purification system, condensate is sent in the order of the filtration device and the condensate desalination device, suspended substances such as iron oxide fine particles generated from equipment such as boilers and piping materials such as piping, Cu ions, Na ions, After removing various ion components such as Cl ions, condensate is passed through a low-pressure feed water heater and a high-pressure feed water heater in this order, and sent to the boiler.
[0003]
In the boiling water nuclear power plant (BWR), steam generated in the nuclear reactor is sent in the order of the high-pressure turbine and low-pressure turbine, and the generator is rotated in each turbine to generate electricity. It is cooled and sent to the condensate purification system as condensate for repeated use. In the condensate purification system, condensate is sent in the order of filtration device and condensate demineralization device, suspended substances such as iron oxide fine particles generated from equipment such as nuclear reactors and piping materials such as piping, Cu ions, Na ions After removing various ion components such as Cl ions, the condensate is passed through the low-pressure feed water heater and the high-pressure feed water heater in this order, and sent to the reactor. In addition to the condensate purification system, the power plant is also equipped with a reactor coolant purification system and a fuel pool cooling and purification system. These purification systems also remove suspended substances and ion components generated in the system. It has been removed.
[0004]
As the filtration device used in each of the purification systems described above, for example, a filter member suspended from and supported by a water collecting hole formed in a grid plate installed in the tower body is used. As the filtration element, for example, a substantially cylindrical cartridge type in which a filtration membrane is folded around a core, for example, in a pleat shape, and the outside is covered with a polypropylene net, for example, is used. A perforated tube is disposed through the hollow portion, and the upper end side of the perforated tube is inserted into the water collecting hole of the above-described eye plate, and protrudes toward the filtered water chamber formed at the upper portion with the eye plate as a boundary, and a nut member It is fixed and hung using etc.
[0005]
[Problems to be solved by the invention]
Conventionally, the upper end side of the perforated pipe is inserted into the water collecting hole of the eyeplate as follows. First, an operator is placed in the element chamber below the eyeplate and in the filtered water chamber above the eyeplate, and about 2 m of filter member is carried into the element chamber through the side manhole. Next, an operator in the element chamber lifts the filter member in a substantially vertical direction, inserts the upper end side of the perforated pipe of the filter member into a target water collection hole, and places the upper end side to the filtered water chamber side by a predetermined amount. Hold in a protruding state. Then, an operator in the filtered water chamber attaches and locks a nut member on the upper end side of the perforated pipe.
[0006]
However, the height from the bottom of the tower in the element chamber to the eyeplate is usually about 3 to 4 m. Accordingly, it is not easy for an operator in the element chamber to lift the filter member and insert the upper end side of the porous tube about 2 m away from the upper end side toward the predetermined water collecting hole. Moreover, since the water collecting holes in which the filter members are suspended are provided in units of several hundreds on the eye plate having a diameter of about 2 to 2.5 m, the operator lifts all of them as described above. Inserting the filter member requires a lot of labor and a long working time.
[0007]
The present invention has been made in view of the above, facilitating the work of inserting and suspending the filter member into the water collecting hole of the eyeplate, enhancing safety, and shortening the mounting work time. It is an object of the present invention to provide a hanging jig for a filter member and a hanging support method.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention according to claim 1, the upper end side of the perforated pipe is inserted into the water collecting hole of the main plate provided in the tower body, and is protruded to the filtered water chamber side above the main plate. A hanging jig used when hanging and supporting a filter member in which a filtration element is mounted around a perforated pipe by locking on the filtered water chamber side,
A connecting portion for the lifting member is provided in the vicinity of the tip, and by the lifting member, a rod-shaped leading member that is pulled up from the element chamber at the bottom of the eyeplate through the water collecting hole to the filtered water chamber side,
A connection that is mounted near the rear end of the leading member, is inserted from the upper end opening of the porous tube and is press-contactable to the inner peripheral surface of the porous tube, and holds the filter member in a connected state when pulled up by the lifting member For packing ,
Provided is a hanging jig characterized in that a joint portion that can be bent in an arbitrary direction is provided at at least one location of the leading member .
According to the second aspect of the present invention, there is provided a nut member capable of pressing the coupling packing along the axial direction of the leading member, and by tightening the nut member, the outer peripheral surface of the coupling packing is expanded outward. The suspension jig according to claim 1, wherein the suspension jig is capable of being brought into pressure contact with the inner peripheral surface of the porous tube.
According to a third aspect of the present invention, there is provided a guide packing that is provided between the connecting portion for the lifting member and the connecting packing, and is tapered toward the leading end of the leading member. A hanging jig according to 1 or 2 is provided.
In the present invention according to claim 4, a method for hanging and supporting a filter member in which a filtration element is mounted around a perforated tube in a water collecting hole of a main plate provided in a tower body,
Connecting a pulling member near the tip of a rod-shaped leading member having a joint that can be bent in an arbitrary direction at least in one place;
A step of inserting a coupling packing mounted near the rear end of the leading member into the inside thereof from the upper end opening of the porous tube and press-contacting the inner surface of the porous tube;
The lifting member is pulled up on the filtered water chamber side at the upper part of the plate, the leading member is pulled from the element chamber at the lower part of the plate through the water collecting hole to the filtered water chamber side, and the upper end side of the perforated pipe is filtered with filtered water. Projecting a predetermined amount to the room side;
Releasing the pressure contact force on the inner peripheral surface of the porous tube by the connecting packing, and removing the leading member provided with the connecting packing;
And a step of locking the upper end side of the perforated pipe on the filtered water chamber side .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a side view showing a hanging jig 100 according to one embodiment of the present invention. As shown in this figure, the hanging jig 100 includes a leading member 200 and a coupling packing 310.
[0010]
The leading member 200 is composed of two rod-like members 210 and 220. At the front end of the first rod-shaped member 210, a pull-up member connecting portion 210a bent into a ring shape is formed to connect the rope 400, which is a pull-up member, and the second rod-shaped member 220 is formed at the rear end. In order to connect, the rear end connection part 210b similarly processed into the ring shape is formed. A tip connecting portion 221 a processed into a ring shape is formed at the tip of the second rod-shaped member 220, and the tip connecting portion 221 a is engaged with the rear end connecting portion 210 b of the first rod-shaped member 210. . The joint where the distal end connecting portion 221a of the second rod-shaped member 220 and the rear end connecting portion 210b of the first rod-shaped member 210 are engaged, so that the portion bends one side in any direction with respect to the other. It functions as a part. When the leading member 200 is composed of a single rod-shaped member and does not have a joint portion, when the leading member 200 is inserted into the water collecting hole 10a of the eye plate 10, the rope 400, which is a lifting member, causes the leading member 200 to Although it is necessary to pull up straight until all passes through the water collecting hole 10a, by providing one or more parts that function as joints in this way, the leading member 200 is placed in the water collecting hole 10a even if the pulling direction is slightly inclined. It can be easily passed.
[0011]
More specifically, the second rod-shaped member 220 of the leading member 200 has male screw portions 221b and 222b formed on the peripheral surface, and is divided into a front end rod portion 221 and a rear end rod portion 222 at a substantially central portion in the longitudinal direction. ing. The distal end rod part 221 has the distal end connection part 221a as described above, and the rear end rod part 222 positions the bolt head part 222a at the rear end and abuts the front end with the rear end of the front end rod part 221. They are arranged in such a manner that they are connected by a connecting nut 223.
[0012]
A flat washer 300 is disposed on the rear end rod portion 222 so as to contact the bolt head portion 222a before being connected to the front end rod portion 221 using the connection nut 223 as described above. The packing 310, the flat washer 320, the pressing nut member 330, and the guide packing 340 are sequentially inserted.
[0013]
The coupling packing 310 is formed by laminating three rubber plate members 311 to 313. Coupling gasket 310, in a state where no pressing by a pressing nut member 330, while being formed with an outer diameter which can be easily inserted into the perforated pipe 21 of the filter member (2) to be described later, the bolt head a pressing nut member 330 By tightening in the direction of the portion 222a, it is pressed in the axial direction of the rear end rod portion 222 via the plain washers 300, 320, and as a result, the peripheral surface bulges outward and presses against the inner peripheral surface of the porous tube 21. Is. In addition, as long as the packing 310 for a connection can exhibit this function, the number of laminated | stacked board members 311 to 313, a shape, etc. are not limited. Moreover, it can also form from a synthetic resin material instead of rubber | gum.
[0014]
When the porous tube 21 held by the coupling packing 310 is led directly to the water collecting hole 10a, the tip of the porous tube 21 comes into contact with the lower surface of the eyeplate around the water collecting hole 10a, Damage the laminated protective liner. Therefore, a guide packing 340 is provided to insert the tip of the porous tube 21 into the water collecting hole 10a so as not to contact the lower surface of the eyeplate. Since the guide packing 340 performs such a function, the outer diameter on the rear end side thereof is approximately the same as the outer diameter of the porous tube 21, and is formed in a tapered shape that tapers toward the distal end. Since it is inserted into the water collecting hole 10a from the front end side of the tapered portion 340a, the front end portion of the porous tube 21 is located immediately below the water collecting hole 10a when the rear end side having a large outer diameter passes, The tip of the perforated tube 21 is prevented from coming into contact with the lower surface of the eye plate when inserted into the water hole 10a. The guide packing 340 is preferably formed from rubber, but can also be formed from synthetic resin. The front end surface of the guide packing 340 is in contact with the connection nut 223, thereby restricting the mounting position on the rear end rod portion 222.
[0015]
Here, an example of the filter member 2 to be suspended by the suspension jig 100 of the present embodiment and a schematic structure of a filtration device using the filter member 2 will be described with reference to FIGS. In these drawings, 1 indicates a tower body of the filtration device, and 2 indicates a filter member. In the tower main body 1, a plate 10 having a plurality of water collecting holes 10 a is disposed, and a filtered water chamber 11 is formed at the upper portion and an element chamber 12 is formed at the lower portion with the plate 10 as a boundary. ing.
[0016]
A plurality of filter members 2 are supported in a suspended manner in the element chamber 12 corresponding to each of the plurality of water collecting holes 10a. Then, the treated water to be treated flows into the element chamber 12 through the inflow pipe 13, and the treated water that has flowed hits the lower part (end plate) of the tower so that the lower part of the tower serves as a baffle plate. The water is uniformly distributed therein, filtered through the filter member 2, and flows into the filtered water chamber 11 as filtered water, and is then sent from the outflow pipe 14 to the next process.
[0017]
As shown in FIG. 3, the filter member 2 includes a porous tube 21 that is a shaft member, and a filtration element 22 that is mounted around the porous tube 21. As shown in FIG. 4, the porous tube 21 is made of, for example, stainless steel, and a plurality of small holes 21 a are formed on the circumferential surface. A plurality of, for example, two filtration elements 22 are formed along the length direction of the porous tube 21. Has a length capable of supporting (see FIG. 3).
[0018]
In the perforated tube 21, an end wall member 21b is fixed to an end portion which becomes the lower end side when the porous tube 21 is suspended from the eyeplate 10, and the lower bolt 21c protrudes outward from the end wall member 21b. It is fixed to. In addition, a flange 21d is welded to the outer periphery of the end plate 10 at a position close to the lower end direction by a predetermined length from the upper end when it is suspended from the eye plate 10. When the flange 21d is inserted into the water collecting hole 10a of the eyeplate 10 from below, the flange 21d comes into contact with the lower surface of the eyeplate 10, and the amount of protrusion of the porous tube 21 toward the filtrate chamber 11 is regulated and made constant. is there. Accordingly, the welding position of the flange 21d is such that when the perforated tube 21 is inserted through the water collection hole 10a, the leakage prevention gasket 21g and the water collection hole are formed on the filtered water chamber 11 side after passing through the water collection hole 10a. The upper nut 21f and the lock nut 21e are prevented from being detached from 10a (see FIGS. 3 and 5).
[0019]
As shown in FIG. 8, for example, the filtration element 22 is disposed around the cylindrical core 23 in a substantially cylindrical shape with the filtration membrane 24 folded in a pleat shape, and the outer periphery thereof is made of polypropylene. A pleated filter covered with a net member 25 is used. A substantially annular end member 26 for holding the filtration membrane is disposed at each end of the filtration element 22, and each end 23 a, 23 b of the core 23 protrudes outward. The porous tube 21 is disposed through the core 23.
[0020]
In the embodiment shown in FIG. 3, two filtration elements 22 are arranged along the longitudinal direction of the porous tube 21, and the upper end side end 23 a of the core 23 in the filtration element 22 arranged on the upper side As shown in FIG. 6, the upper socket 27 is mounted with the O-ring 23c interposed. In addition, the lower end 23b of the core 23 of the filtration element 22 arranged on the lower side has a lower portion having an insertion hole through which the bolt 21c of the porous tube 21 is inserted at the center as shown in FIG. A socket 28 is mounted with an O-ring 23c interposed. In order to prevent leakage of untreated water from the insertion hole, sealing gaskets 28 a and 28 b are loaded around the bolt 21 c sandwiching the lower socket 28. Further, as shown in FIG. 3, between the end 23b on the lower end side of the filtration element 22 arranged on the upper side and the end 23a on the upper end side of the filtration element 22 arranged on the lower side, respectively O A connection socket 29 for sealingly connecting the two is mounted with a ring (not shown) interposed therebetween.
[0021]
A lower nut 30 as a lower end position restricting member for restricting the lower end position of the filtration element 22 is disposed below the lower socket 28 of the bolt 21c via a washer 30a (see FIGS. 3 and 7). Of course, the lower nut 30 only needs to prevent the downward movement of the filtration element 22, and the number of the lower nuts 30 is not limited as long as such a function can be performed.
[0022]
Further, on the lower side of the lower nut 30, the bolt 21 c is inserted into a connecting hole formed in the flat bar 31 to be engaged with the flat bar 31, and the flat bar 31 is detached from the bolt 21 c. The two lock nuts 32 and 33 which prevent and have the function of regulating the lower end position of the filtration element 22 together with the lower nut 30 are screwed together. The flat bar 31 is formed in a lattice shape as shown in FIG. 9 and has a structure in which the connecting holes are formed at predetermined intervals on the front, rear, left and right sides. The bolt 21c of the porous tube 21 in the filter member 2 to be connected is connected, and the interval between the adjacent filter members 2 is kept constant.
[0023]
When the porous tube 21 is inserted through the water collecting hole 10a of the eye plate 10 and attached, between the eye plate 10 and the above-described filtration element 22 disposed on the upper side, in the embodiment shown in FIG. 21 has a flange 21d that comes into contact with the lower surface of the eyeplate 10, and the upper socket 27 is attached to the core end 23a on the upper end side of the filtration element 22 as described above. A coil spring 40 as a spring member is disposed around the perforated tube 21 between 21d and the upper socket 27. Since this coil spring 40 has its upper end in contact with the flange 21d and its lower end in contact with the upper socket 27, all parts from the upper socket 27 including the two filtration elements 22 to the lower socket 28 are normally operated. Then, it is elastically biased so as to be pressed against the lower nut 30 which is a lower end position restricting member. That is, it functions to constantly urge each filtration element 22 toward the lower nut 30 that is the lower end position restricting member. This elastic spring force of the coil spring 40 absorbs the manufacturing tolerance of the filtration element 22 and the amount of contraction due to water flow, prevents the formation of gaps, and prevents the generation of untreated water that does not pass through the filtration element 22. 0024
Then, the hanging jig 10 0 of the present embodiment based on FIG. 10 describes a method for suspending the filter member 2 with. First, as shown in FIG. 10A, an operator is placed in the filtered water chamber 11 and the element chamber 12. Then, the filter member 2 is inserted into the element chamber 12 from the side manhole 15 of the element chamber 12.
[0025]
Next, an operator in the filtered water chamber 11 lowers the suspension jig 100 into the element chamber 12 through a predetermined water collection hole 10 a that is intended to suspend the filter member 2. As shown in FIG. 10B, the operator in the element chamber 12 receives the hanging jig 100 and then inserts the coupling packing 310 from the upper end opening of the porous tube 21. The connecting packing 310 is tightened toward the bolt head 222a by the pressing nut member 330 and pressed so that the peripheral surface of the connecting packing 310 bulges outward, and the connecting packing is applied to the inner peripheral surface of the porous tube 21. 310 is pressed. Thereby, the coupling packing 310 is coupled to the porous tube 21.
[0026]
Next, an operator in the filtered water chamber 11 pulls the rope 400. As a result, first, the first rod-shaped member 210 of the leading member 200 passes through the water collecting hole 10a, and then the second rod-shaped member 220 passes through the water collecting hole 10a. At this time, the tapered portion 340a that is tapered of the guide packing 340 provided in the middle of the second rod-shaped member 220 enters the water collecting hole 10a from the tip side. The axial runout of the porous tube 21 is corrected as the tapered portion 340a passes, and the porous tube 21 is inserted almost straight into the water collecting hole 10a without damaging the protective liner on the lower surface of the eye plate 10. .
[0027]
If it is inserted until the flange 21 d of the porous tube 21 comes into contact with the lower surface of the eyeplate 10, the operator of the filtered water chamber 11 loosens the pressing nut member 330 of the hanging jig 100. As a result, the connecting packing 310 bulges outward, so that the pressing force applied to the inner peripheral surface of the porous tube 21 is lost. Then, the operator quickly pulls out the hanging jig 100 from the porous tube 21. When the hanging jig 100 is pulled out, the washer 21g is inserted and fastened with the upper nut 21f (see FIGS. 10C and 5). If the tightening torque value of the upper nut 21f is tightened with a torque wrench until it reaches a predetermined reference value, the lock nut 21e is finally fastened to the perforated tube 21. Thereby, the attachment work of one filter member 2 is complete | finished. During this time, an operator in the element chamber 12 supports the filter member 2 in the element chamber 12 in order to prevent the filter member 2 from dropping (see FIG. 10C).
[0028]
The above operation is repeated, and the filter member 2 is successively suspended from the target water collecting hole 10a (see FIG. 10D). If the filter member 2 is suspended and supported in all the water collecting holes 10a of the eyeplate 10, the lower bolt 21c is inserted into the connecting hole formed in the flat bar 31, and the two bolts 32, 33 are inserted into the lower bolt 21c. Are screwed together (see FIGS. 7 and 9).
[0029]
【The invention's effect】
According to the present invention, the hanging jig is provided with a connecting portion for a lifting member in the vicinity of the tip, and is lifted by the lifting member from the element chamber below the eyeplate to the filtered water chamber side through the water collecting hole. A rod-shaped leading member, and a filter member that is mounted near the rear end of the leading member, is inserted from the upper end opening of the porous tube and is press-contactable to the inner peripheral surface of the porous tube, and is pulled up by the lifting member It was closed and connecting packing for holding a connecting state, in at least one location of said leading member, the joint portion bendable is provided in any direction.
[0030]
Therefore, an operator in the filtered water chamber above the eye plate simply pulls up the suspension jig with the lifting member, so that the porous tube of the filter member guided by the leading member is surely and easily provided in the target water collecting hole. Therefore, the mounting operation can be facilitated and the safety of the operation can be improved. In addition, when using such a hanging jig, it is necessary to connect with a filter member attached in units of several hundreds to the eyeplate when pulling up from the filtered water chamber side. According to this, since it is possible to connect to the filter member simply by inserting the connecting packing from the upper end opening of the perforated tube and press-contacting it to the inner peripheral surface of the perforated tube, this connecting operation is extremely easy, and the work load accompanying the connecting operation is increased. Is small. Moreover, the removal operation | work is also easy. Therefore, compared with the conventional attachment method which did not use the hanging jig, the total work time required for the attachment work can be shortened. Furthermore, when the leading member does not have a joint portion, when the leading member is inserted into the water collecting hole of the eyeplate, it is necessary to pull straight up until all of the leading member passes through the collecting hole by the lifting member. However, by providing one or more parts that function as joints, the leading member can be easily passed through the water collecting holes even if the pulling direction is slightly inclined.
[Brief description of the drawings]
FIG. 1 is a side view showing a hanging jig according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of the overall structure of a filtration apparatus to which the hanging jig and the hanging support method of the present invention are applied.
FIG. 3 is a view showing an example of a filter member to which the hanging jig and the hanging support method of the present invention are applied.
FIG. 4 is a view showing a porous tube used in the filter member.
FIG. 5 is an enlarged view of a part A in FIG. 3;
6 is an enlarged view of a portion C in FIG.
7 is an enlarged view of a portion B in FIG. 3;
FIG. 8 is a perspective view showing a part of a filtration element used in the filter member.
FIG. 9 is a diagram showing a flat bar.
FIG. 10 is a work process chart for explaining one embodiment of the suspension support method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tower main body 10 Top plate 10a Water collecting hole 11 Filtration water chamber 12 Element chamber 2 Filter member 21 Porous pipe 22 Filtration element 27 Upper core socket 28 Lower core socket 29 Connecting core socket 30 Lower nut 40 Coil spring 100 Hanging jig 200 Leading member 310 Connection packing 330 Pressing nut member 340 Guide packing

Claims (4)

By inserting the upper end side of the perforated pipe into the water collecting hole of the main plate provided in the tower body, projecting it to the filtered water chamber side at the top of the main plate, and locking on the filtered water chamber side, A hanging jig used when hanging and supporting a filter member having a filtration element attached thereto,
A connecting portion for the lifting member is provided in the vicinity of the tip, and by the lifting member, a rod-shaped leading member that is pulled up from the element chamber at the bottom of the eyeplate through the water collecting hole to the filtered water chamber side,
A connection that is mounted near the rear end of the leading member, is inserted from the upper end opening of the porous tube and is press-contactable to the inner peripheral surface of the porous tube, and holds the filter member in a connected state when pulled up by the lifting member For packing ,
A hanging jig characterized in that a joint portion that can be bent in an arbitrary direction is provided in at least one location of the leading member .   A nut member capable of pressing the connecting packing along the axial direction of the leading member is provided, and by tightening the nut member, the outer peripheral surface of the connecting packing is bulged outwardly and pressed against the inner peripheral surface of the porous tube. The hanging jig according to claim 1, which is possible.   The suspension jig according to claim 1, further comprising a guide packing provided between the connection portion for the lifting member and the connection packing, and tapering toward the leading end of the leading member. . A method of suspending and supporting a filter member in which a filtration element is mounted around a perforated pipe in a water collecting hole of a main plate provided in a tower body,
Connecting a pulling member near the tip of a rod-shaped leading member having a joint that can be bent in an arbitrary direction at least in one place;
A step of inserting a coupling packing mounted near the rear end of the leading member into the inside thereof from the upper end opening of the porous tube and press-contacting the inner surface of the porous tube;
The lifting member is pulled up on the filtered water chamber side at the upper part of the plate, the leading member is pulled from the element chamber at the lower part of the plate through the water collecting hole to the filtered water chamber side, and the upper end side of the perforated pipe is filtered with filtered water. Projecting a predetermined amount to the room side;
Releasing the pressure contact force of the porous tube circumference that by the coupling gasket, a step of removing the lead member with a coupling gasket,
And a step of locking the upper end side of the perforated pipe on the filtered water chamber side.

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