JP2002166107A - Hanging fixture of filter member and hanging support method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work for inserting a filter member into the water gathering hole of an eyeboard to support the same in a hanging state. SOLUTION: The hanging fixture of the filter member has a rod-shaped preceding member 200, which has a connection part for a rope 400 being a drawing-up member in the vicinity of the leading end thereof and passed through a water gathering hole from the element chamber under the eyeboard to be drawn up toward a filtered water chamber, and a connection packing 340 mounted in the vicinity of the rear end of the preceding member 200 and inserted into a perforated pipe from the upper end opening part thereof to be brought into contact with the inner peripheral surface of the perforated pipe and holding the filter member in a connected state at the time of drawing-up by the rope 400. Therefore, only by drawing up the hanging fixture 100 through the rope 40 by the worker in the filtered water chamber above the eyeboard, the perforated pipe of the filter member guided by the preceding member 200 is certainly and easily inserted in the target water gathering hole and, accordingly, attaching work can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for hanging a filter member used for filtration of general industrial condensate water, tap water, industrial water, industrial waste water, power plant water, boiler condensate treatment, and the like. Regarding the support method.

[0002]

2. Description of the Related Art For example, in a thermal power plant, steam generated in a boiler is sent to a high-pressure turbine and a low-pressure turbine in this order.
Each turbine rotates a generator to generate power, and the steam after power generation is cooled by a condenser and sent to a condensate purification system as condensate, which is used repeatedly. In the condensate purification system, the condensate is filtered,
Suspended substances such as iron oxide fine particles generated from piping materials such as boilers and piping materials, and Cu
After removing various ion components such as ions, Na ions, and Cl ions, the condensate passes through a low-pressure feedwater heater and a high-pressure feedwater heater in this order, and is sent to a boiler.

In a boiling water nuclear power plant (BWR), steam generated in a nuclear reactor is sent to a high-pressure turbine and then to a low-pressure turbine in order, and each turbine rotates a generator to generate electricity. It is cooled by a water heater and sent to the condensate purification system as condensate, which is used repeatedly. In the condensate purification system,
The condensate is sent in the order of a filtration device and a condensate desalination device, and various suspended substances such as iron oxide fine particles and Cu ions, Na ions, and Cl ions generated from piping materials such as reactors and equipment. After removing the ionic components, the condensate passes through a low-pressure feedwater heater and a high-pressure feedwater heater in this order and is sent to the reactor. Also,
In addition to the condensate purification system, the power plant is equipped with a reactor coolant purification system and a fuel pool cooling purification system.These purification systems also remove suspended substances and ionic components generated in the system. ing.

[0004] As a filtration device used in each of the above-mentioned purification systems, for example, a filtration device in which a filter member is suspended and supported in a water collecting hole formed in an eye panel provided horizontally in a tower body is used. . As the filtration element, for example, a substantially cylindrical cartridge type in which a filtration membrane is disposed around the core by folding it into, for example, a pleated shape and the outside is coated with, for example, a polypropylene net, is used. A perforated pipe is arranged to penetrate the hollow part, and the upper end side of this perforated pipe is inserted into the water collecting hole of the above-mentioned perforated plate, and protrudes toward the filtered water chamber formed above the perforated plate, and a nut member It is fixed and suspended using

[0005]

The insertion of the upper end side of the perforated tube into the water collecting hole of the perforated plate has conventionally been performed as follows. First, an operator is placed in the element room below the eye plate and in the filtered water room above the eye plate, and a filter member of about 2 m or more is carried into the element room through a 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 tube of the filter member into a target water collecting hole, and inserts the upper end side into the filtered water chamber by a predetermined amount. Hold it in a protruding state. Then, the worker in the filtered water chamber attaches and locks the nut member to the upper end side of the perforated pipe.

However, the height from the lower part of the tower in the element chamber to the face plate is usually about 3 to 4 m. Therefore, it is not easy for an operator in the element chamber to lift the filter member and insert the upper end side of the perforated pipe about 2 m ahead toward a predetermined water collecting hole. Moreover, since the water collecting holes in which the filter members are hung are provided in units of several hundreds for the perforated plate having a diameter of about 2 to 2.5 m, the operator can lift all the water collecting holes as described above. Inserting the filter member requires a great deal of labor and a long working time.

[0007] The present invention has been made in view of the above,
A jig for hanging a filter member and a method for supporting the hanging of the filter member, which facilitates the work of inserting the filter member into the water collecting hole of the eye plate and suspending and supporting the same, improving safety, and shortening the installation work time. The task is to provide

[0008]

In order to solve the above-mentioned problems, according to the present invention, the upper end side of a perforated pipe is inserted into a water collecting hole of a face plate provided in a tower body, and the face plate is inserted. A hanging jig used to suspend and support a filter member having a filtration element mounted around a perforated tube by projecting to the upper part of the filtration water chamber and locking it at the filtration water chamber side. A connecting portion for a lifting member is provided in the vicinity of the distal end, and the lifting member allows the rod-shaped leading member to be pulled up from the element chamber below the perforated plate through the water collecting hole to the filtered water chamber side; A connection packing that is mounted near the rear end of the member, is inserted from the upper end opening of the perforated tube, and is provided so as to be able to press against the inner peripheral surface of the perforated tube, and holds the filter member in a connected state when pulled up by the lifting member; With DOO providing hanging jig characterized. According to the second aspect of the present invention, there is provided a nut member capable of pressing the connection packing along the axial direction of the leading member, and by tightening the nut member, the outer peripheral surface of the connection packing is expanded outward. The hanging jig according to claim 1, wherein the hanging jig can be brought out and pressed against the inner peripheral surface of the perforated tube. According to the third aspect of the present invention, provided between the connecting portion for the lifting member and the packing for connection,
The hanging jig according to claim 1 or 2, further comprising a guide packing tapering toward the distal end of the leading member. According to the fourth aspect of the present invention,
The hanging jig according to any one of claims 1 to 3, wherein a joint that can be bent in an arbitrary direction is provided at at least one position of the leading member.
In the present invention according to claim 5, a method for suspending and supporting a filter member having a filtration element mounted around a perforated pipe in a water collecting hole of a perforated plate provided in the tower main body,
A step of inserting a connecting gasket attached near the rear end of the rod-shaped leading member connected to the lifting member from the upper end opening of the perforated tube into the inside thereof and pressing it against the inner peripheral surface of the perforated tube, The lifting operation is performed on the filtered water chamber side at the upper part of the perforated plate, and the leading member is pulled up from the element chamber at the lower part of the perforated plate through the water collecting hole to the filtered water chamber side, and the upper end side of the perforated pipe is moved toward the filtered water chamber side. Projecting a predetermined amount, releasing the press-contact force against the inner peripheral surface of the perforated pipe by the connecting packing, and removing the leading member provided with the connecting packing; locking the upper end side of the perforated pipe on the filtration water chamber side And a method of suspending and supporting the filter member.

[0009]

Next, the present invention will be described in more detail with reference to 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
It has a leading member 200 and a connection packing 310.

The leading member 200 includes two rod-like members 21.
0,220. At the front end of the first rod-shaped member 210, a connection portion 210a for a lifting member bent into a ring shape is formed to connect the rope 400 as a lifting member, and at the rear end, a second rod-shaped member 220 is formed.
Are connected to each other, a rear end connecting portion 210b also formed into a ring shape is formed. At the tip of the second rod-shaped member 220, a ring-shaped tip connection part 221a is formed, and this tip connection part 221a is engaged with the rear end connection part 210b of the first rod-shaped member 210. . The tip connecting portion 221a of the second rod-shaped member 220 and the first rod-shaped member 2
The engagement of the rear end connecting portion 210b with the tenth portion functions as a joint that bends one side in an arbitrary direction with respect to the other side. When the leading member 200 is formed of one rod-shaped member and has no joint, when the leading member 200 is inserted into the water collecting hole 10a of the eye panel 10, the leading member 200b is It is necessary to pull up straight until all passes through the water collecting hole 10a, but by providing one or more portions functioning as joints in this way, the leading member 200 can be moved to the water collecting hole 10a even if the lifting direction is slightly inclined. It can be easily passed.

The second rod-shaped member 220 of the leading member 200
More specifically, the external thread portions 221b, 222
b is formed, and the distal end rod portion 221 is formed at a substantially central portion in the longitudinal direction.
And a rear end rod portion 222. The tip rod portion 221 has the tip connection portion 221a as described above,
The rear end rod portion 222 has a bolt head 222a positioned at the rear end, and the front end thereof is arranged so as to abut the rear end of the front end rod portion 221. Both are connected by a connection nut 223.

The flat washer 300 is arranged 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. , Connection packing 310,
The flat washer 320, the pressing nut member 330, and the guide packing 340 are sequentially inserted.

The connecting packing 310 is formed by laminating three rubber plate members 311 to 313. In a state where the connection packing 310 is not pressed by the pressing nut member 330, the porous tube 21 of the filter portion seat 2 described below is used.
The pressing nut member 330 is pressed in the axial direction of the rear end rod portion 222 through the flat washers 300 and 320 by tightening the pressing nut member 330 in the direction of the bolt head 222a. As a result, the peripheral surface swells outward and presses against the inner peripheral surface of the porous tube 21. Note that the number and shape of the plate members 311 to 313 are not limited as long as the connection packing 310 can exhibit such a function. Further, instead of rubber, it can be formed of a synthetic resin material.

When the perforated pipe 21 held by the connecting packing 310 is directly guided to the water collecting hole 10a, the tip of the perforated pipe 21 abuts the lower surface of the perforated plate around the water collecting hole 10a, and the perforated pipe 21 is closed. Damage the protective liner laminated to the board 10. Therefore, a guide packing 340 is provided in order to insert the distal end portion of the perforated tube 21 into the water collecting hole 10a so as not to contact the lower surface of the perforated plate. The guide packing 340 is
In order to achieve such a function, the outer diameter of the rear end side is substantially the same as the outer diameter of the porous tube 21, but is formed in a tapered shape tapering toward the distal end. Since it is inserted into the water collecting hole 10a from the tip side of the tapered portion 340a,
At the time when the rear end side having a large outer diameter passes, the front end of the porous tube 21 is located directly below the water collecting hole 10a, and the front end of the porous tube 21 is inserted into the water collecting hole 10a. Is prevented from contacting. The guide packing 340 is preferably formed of rubber, but may be formed of synthetic resin. The guide packing 3
The distal end surface of the abutment 40 is in contact with the connection nut 223, thereby restricting the mounting position on the rear end rod portion 222.

Here, the hanging jig 100 of the present embodiment
An example of the filter member 2 to be suspended and a schematic structure of a filtration device using the filter member 2 will be described with reference to FIGS. In these figures, 1 indicates a tower main body of the filtration device, and 2 indicates a filter member. In the tower main body 1, a face plate 1 having a plurality of water collecting holes 10a is formed.
A filtered water chamber 11 is formed in an upper part and an element chamber 12 is formed in a lower part with the eye plate 10 as a boundary.

A plurality of filter members 2 are suspended and supported in the element chamber 12 corresponding to each of the plurality of water collecting holes 10a. The to-be-treated water to be treated flows into the element chamber 12 through the inflow pipe 13, and the influent to-be-treated water 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 in the inside, is filtered through the filter member 2, flows into the filtered water chamber 11 as filtered water, and is sent from the outlet pipe 14 to the next step.

The filter member 2 is, as shown in FIG.
It has a perforated tube 21 as a shaft member and a filtration element 22 mounted around the perforated tube 21. As shown in FIG. 4, the porous tube 21 is formed of, for example, stainless steel, and has a plurality of small holes 21a formed on a peripheral surface thereof. (See FIG. 3).

An end wall member 21b is fixed to an end of the perforated tube 21 which is a lower end when suspended from the perforated plate 10, and a lower bolt 21c is fixed to the end wall member 21b.
Are fixed so as to protrude outward. Also, eyeboard 1
A flange 21d is welded to the outer periphery of a position which is closer to the lower end by a predetermined length from the upper end side when hung to zero. When inserted into the water collecting hole 10a of the eye panel 10 from below, the flange 21d contacts the lower surface of the eye panel 10,
The amount of protrusion of the perforated tube 21 toward the filtered water chamber 11 is regulated to be constant. Therefore, the welding position of the flange 21d is such that when the porous tube 21 is inserted into the water collecting hole 10a, the gasket 21g for preventing leakage and the water collecting hole on the filtered water chamber 11 side after passing through the water collecting hole 10a. The upper nut 21f and the lock nut 21e for preventing the nuts 10a from dropping off can be fastened (see FIGS. 3 and 5).

As shown in FIG. 8, for example, the filtration element 22 is provided in a substantially cylindrical shape with a filtration membrane 24 folded in a pleated shape around a cylindrical core 23 and the outer periphery thereof is formed. A pleated filter covered with a polypropylene net member 25 is used. A substantially annular end member 26 for holding a filtration membrane is disposed at each end of the filtration element 22.
End portions 23a and 23b project outward. In addition,
The above-mentioned perforated tube 21 is provided so as to penetrate the core 23.

In the embodiment shown in FIG.
2 are provided along the longitudinal direction of the perforated tube 21, and at the end 23 a on the upper end side of the core 23 in the filter element 22 arranged on the upper side, as shown in FIG.
The upper socket 27 is mounted with the O-ring 23c interposed therebetween. As shown in FIG. 7, a bolt 21c of the perforated tube 21 is provided at the center of the lower end 23b of the core 23 in the filter element 22 disposed on the lower side.
Is mounted with an O-ring 23c interposed therebetween. In order to prevent untreated water from leaking from the insertion hole, sealing gaskets 28a and 28b are mounted around the bolt 21c with the lower socket 28 interposed therebetween. Furthermore, the lower end 23b of the filtration element 22 arranged on the upper side and the upper end 2 of the filtration element 22 arranged on the lower side.
As shown in FIG. 3, a connection socket 29 for sealingly connecting the two is mounted between each of them, as shown in FIG. 3, with O-rings (not shown) interposed therebetween.

Below the lower socket 28 of the bolt 21c, a lower nut 30 as a lower end position regulating member for regulating the lower end position of the filter element 22 is provided with a washer 30.
a (see FIGS. 3 and 7). Of course, the lower nut 30 only needs to be able to prevent the downward movement of the filtration element 22, and the number of the lower nut 30 is not limited at all as long as it can perform such a function.

On the lower side of the lower nut 30,
By inserting the bolt 21c into the connection hole formed in the flat bar 31, the flat bar 31 is engaged with the flat bar 31 to prevent the flat bar 31 from being detached from the bolt 21c, and is filtered together with the lower nut 30. Two lock nuts 32 and 33, which also have a function of regulating the lower end position of the element 22, are screwed together. The flat bar 31 has a structure formed in a lattice shape as shown in FIG. The bolts 21c of the porous tube 21 in the filter member 2 to be connected are connected to each other,
It serves to keep the interval between adjacent filter members 2 constant.

When the perforated tube 21 is inserted through the water collecting hole 10a of the eye panel 10 and attached, between the eye panel 10 and the above-described filtration element 22 disposed in the upper side, in the embodiment shown in FIG. , The perforated pipe 21 has a flange 21d that abuts against the lower surface of the eye panel 10, and the upper socket 2 is provided at the core end 23a on the upper end side of the filtration element 22 as described above.
7, the coil spring 40 as a spring member is disposed between the flange 21d and the upper socket 27 and around the perforated pipe 21. Since the coil spring 40 has an upper end in contact with the flange 21d and a 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 in the normal state. , So as to be pressed against the lower nut 30 which is a lower end position regulating member. That is, it functions so as to constantly urge each filter element 22 toward the lower nut 30 which is a lower end position regulating member. Due to the resilient biasing force of the coil spring 40, the manufacturing tolerance of the filtration element 22 and the amount of shrinkage due to the passage of water are absorbed, a gap is prevented, and untreated water that does not pass through the filtration element 22 can be prevented from being generated.

Next, a method of suspending the filter member 2 using the suspending jig 10 of the present embodiment will be described with reference to FIG. First, as shown in FIG.
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.

Next, an operator in the filtered water chamber 11 lowers the hanging jig 100 into the element chamber 12 through a predetermined water collecting hole 10 a for hanging the filter member 2. As shown in FIG. 10 (b), after receiving the hanging jig 100, the worker in the element chamber 12 inserts the connection packing 310 from the upper end opening of the porous tube 21. Packing 3 for connection by pressing nut member 330
10 is tightened toward the bolt head 222 a, and the peripheral surface of the connection packing 310 is pressed so as to bulge outward, and the connection packing 310 is pressed against the inner peripheral surface of the porous tube 21. As a result, the connecting packing 310 is
Linked to

Next, an operator in the filtered water chamber 11 pulls the rope 400. Thereby, first, the leading member 200
The first rod-shaped member 210 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 34 of the guide packing 340 provided in the middle of the second rod-shaped member 220 is tapered.
0a enters the water collecting hole 10a from the tip side. The axial deflection of the perforated tube 21 is corrected as the perforated tube 340a passes, and the perforated tube 21 is inserted almost straight into the water collecting hole 10a without damaging the protective liner on the lower surface of the perforated plate 10. .

When the flange 21 d of the perforated pipe 21 is inserted until the flange 21 d comes into contact with the lower surface of the eye plate 10, the operator of the filtered water chamber 11 can press the nut 33 for the hanging jig 100.
Loosen zero. As a result, the connecting packing 310 swells outward, so that the pressing force applied to the inner peripheral surface of the porous tube 21 is eliminated. Then, the worker quickly pulls out the hanging jig 100 from the porous tube 21. When the hanging jig 100 is pulled out, 21 g of washer is inserted and fastened with the upper nut 21f (FIG. 10 (c) and FIG.
reference). After tightening the upper nut 21f with the torque wrench until the tightening torque value reaches the predetermined reference value,
Finally, the lock nut 21e is fastened to the perforated tube 21. Thereby, the mounting operation of one filter member 2 is completed. During this time, an operator in the element chamber 12 supports the filter member 2 in the element chamber 12 to prevent the filter member 2 from falling (see FIG. 10C).

The above operation is repeated, and the filter member 2 is sequentially suspended from the target water collecting hole 10a (see FIG. 10D). All the water collecting holes 10 of the eye plate 10
a, the lower bolt 21c is inserted into the connection hole formed in the flat bar 31, and the two lock nuts 32, 3 are inserted into the lower bolt 21c.
3 (see FIGS. 7 and 9).

[0029]

According to the present invention, the hanging jig is provided with a connecting portion for a lifting member near the distal end, and the lifting jig passes through the water collecting hole from the element chamber below the perforated board by the lifting member, and the filtered water is removed. A rod-shaped leading member which is pulled up to the chamber side, and which is mounted near a rear end of the leading member, is inserted from an upper end opening of the perforated tube, and is provided so as to be able to press against an inner peripheral surface of the perforated tube; And a connecting gasket for holding the filter member in a connected state when the filter member is pulled up.

Therefore, the operator in the filtered water chamber above the perforated plate simply lifts the hanging jig by the lifting member, and the perforated pipe of the filter member guided by the leading member can be securely inserted into the target water collecting hole. Since it is inserted easily and easily, the mounting operation can be facilitated and the safety of the operation can be improved. In addition, when using such a hanging jig, when pulling up from the filtered water chamber side, it is necessary to perform a connection operation with a filter member attached to the perforated plate in units of several hundreds. According to this, since it is possible to connect to the filter member only by inserting the connecting gasket from the upper end opening of the perforated pipe and pressing against the inner peripheral surface of the perforated pipe, this connecting work is extremely easy, and the work load accompanying the connecting work is increased. Is small. Also, the removal operation is easy. Therefore, the total work time required for the mounting operation can be reduced as compared with the conventional mounting method that does not use the hanging jig.

[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 device to which the hanging jig and the hanging support method of the present invention are applied.

FIG. 3 is a diagram 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 portion A in FIG. 3;

FIG. 6 is an enlarged view of a portion C in FIG. 5;

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 view showing a flat bar.

FIG. 10 is a work process diagram for explaining one embodiment of the hanging support method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tower main body 10 Eye plate 10a Water collecting hole 11 Filtration water chamber 12 Element chamber 2 Filter member 21 Perforated 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

Continued on the front page (72) Inventor Yoshiya Kato 1-2-8 Shinsuna, Koto-ku, Tokyo Organo Corporation F-term (reference) 4D064 AA05 BK05

Claims (5)

[Claims] 1. An upper end of a perforated pipe is inserted into a water collecting hole of a mesh plate provided in a tower body, and protrudes toward a filtration water chamber above the mesh plate, and is locked on the filtration water chamber side. A hanging jig used for suspending and supporting a filter member having a filtration element mounted around a perforated tube, comprising a connecting portion for a lifting member near a distal end, and the lifting member including: A rod-shaped lead member that is pulled up from the element chamber below the perforated plate to the filtered water chamber side through the water collection hole, and is mounted near the rear end of the lead member and inserted from the upper end opening of the perforated pipe; A hanging jig, which is provided so as to be able to be pressed against the inner peripheral surface of the perforated pipe and holds the filter member in a connected state when the filter member is pulled up by the lifting member. 2. A connecting member having a nut member capable of pressing the connecting packing along an axial direction of the leading member, and tightening the nut member to bulge an outer peripheral surface of the connecting packing outward to form a porous member. The hanging jig according to claim 1, wherein the jig can be pressed against an inner peripheral surface of the pipe. 3. A guide packing provided between the connecting portion for the lifting member and the connecting packing and tapering toward a tip end of the leading member. Hanging jig. 4. The hanging jig according to claim 1, wherein a joint that can be bent in an arbitrary direction is provided at at least one position of the leading member. 5. A water collecting hole of a face plate provided in the tower body,
A method for suspending and supporting a filter member having a filtration element mounted around a perforated tube, comprising: a connecting packing mounted near a rear end of a rod-shaped leading member connected to a lifting member; A step of inserting it into the inside of the perforated pipe from the upper end opening thereof and pressing it against the inner peripheral surface of the perforated pipe; and operating the lifting member on the side of the filtered water chamber above the perforated plate to collect water from the element chamber below the perforated plate. Passing through the hole and pulling up to the filtered water chamber side, and projecting a predetermined amount of the upper end side of the perforated pipe toward the filtered water chamber side; A method for suspending and supporting a filter member, comprising: a step of removing a leading member provided with a packing; and a step of locking an upper end side of a perforated pipe at a filtration water chamber side.