KR20170052092A - Sealing device for drive shaft of debris filter and installation method thereof - Google Patents

Sealing device for drive shaft of debris filter and installation method thereof Download PDF

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Publication number
KR20170052092A
KR20170052092A KR1020150154088A KR20150154088A KR20170052092A KR 20170052092 A KR20170052092 A KR 20170052092A KR 1020150154088 A KR1020150154088 A KR 1020150154088A KR 20150154088 A KR20150154088 A KR 20150154088A KR 20170052092 A KR20170052092 A KR 20170052092A
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South Korea
Prior art keywords
drive shaft
bolt
seal
regulator
seal chamber
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Application number
KR1020150154088A
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Korean (ko)
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KR101739201B1 (en
Inventor
이태식
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한전케이피에스 주식회사
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Priority to KR1020150154088A priority Critical patent/KR101739201B1/en
Publication of KR20170052092A publication Critical patent/KR20170052092A/en
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Publication of KR101739201B1 publication Critical patent/KR101739201B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/304—Seals or gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • B01D2201/342—Axial sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • B01D2201/345—Pressurized seals or gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/60—Shape of non-cylindrical filtering elements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Sealing Devices (AREA)

Abstract

The present invention provides a drive shaft sealing apparatus for a debris filter.
The drive shaft sealing device of the devise filter is characterized in that it is connected to the filter housing And a drive part coupled to the bearing packing part to drive the drive shaft, the drive shaft sealing device comprising: a cylindrical bearing part that is fitted in the drive shaft and has one side thereof mounted on the bearing part of the bearing packing part, A seal member coupled to the bracket and mounted in the drive housing of the drive unit; a packing member mounted between the drive shaft and the inner circumferential surface of the seal chamber; And a seal regulator which is bolted to the other side and adjusts bolt tightness to pressurize the packing member so as to adjust the surface pressure so as to maintain airtightness between the packing member and the drive shaft.

Description

TECHNICAL FIELD [0001] The present invention relates to a deflation filter drive shaft sealing device and a mounting method thereof,

The present invention relates to a devisless filter drive shaft sealing device and a method of installing the same, and more particularly, to a devisless filter drive shaft sealing device capable of performing a maintenance operation in real time regardless of the condition of a system, and a mounting method thereof will be.

When pumping seawater used as cooling water in a thermal power plant, dirt and shellfish suspended in the intake water are first removed from the coarse screen and finally removed to remove foreign matter such as dirt not removed from the coarse screen A debris-filter is installed between the outlet of the circulating water pump and the inlet of the condenser.

FIG. 1 is a schematic cross-sectional view showing the overall configuration of a conventional devise filter.

1, the seawater discharged by the purifying water pump is filtered while passing through the debris-filter 10, and when the foreign matter is filled in the filter, the pressure difference between the front and rear of the filter becomes high, and a differential pressure healing system A back wash is performed and the foreign substance is discharged to a discharge tunnel.

The filter housing (11) is part of the cooling water piping and is again divided into four chambers. Each chamber is provided with a filter basket 21, a filter flap 20 and a discharge flap (not shown). The filter basket 21 is provided at the end of the valve housing facing the condenser, It is fastened with bolts. Each of the flaps 20 is operated by a different driving unit 30.

In addition, when a large amount of foreign substances are suddenly loaded and the filter portion is overloaded, and the sequential reverse cleaning can not be performed, the bypass valve is opened and the cooling water is supplied to the condenser.

In the debris filter used in such a condenser cooling water (seawater) filtering system, the flap drive shaft 31 and the bearing are sealed by a bearing packing portion 40, and the bearing packing portion 40 is formed by a bearing packing 41, an O-ring 42, and a bearing bracket 43.

However, since the fluid used as the cooling water is seawater, there is a problem that local damage such as corrosion or erosion occurs in the O-ring 42 of the inner sealing contact portion. As a result, seawater flows into the gear box 33 to corrode the worm gear 32 and the worm wheel 32, which may cause sticking.

In addition, there is a problem in that the efficiency of the condenser is significantly lowered when the de-mist filter is not operated, and the cooling performance of the low-pressure turbine main steam is difficult to maintain.

In addition, since the seawater supply line system must be completely isolated at the time of repairing the conventional seal-related components, it is not possible to immediately take leakage measures due to the nature of the power generation system. As a result, there is a problem that the lifetime of the debris filter driver is shortened and reliability operation of the condenser becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a devel- opment filter drive shaft sealing device capable of performing maintenance work in real time regardless of the condition of the system, Device and a method of installing the same.

Another object of the present invention is to provide a devisless filter drive shaft sealing device capable of adjusting an appropriate surface pressure between a drive shaft and a packing member and further performing a tightening operation.

Another object of the present invention is to provide a devisless filter drive shaft sealing apparatus and a method of installing the devel-ref filter drive shaft sealing apparatus which can shorten the working time by omitting the disassembling operation of the worm gear assembly during the installation work.

Technical Solution [10] In order to achieve the above object, the present invention provides a filter for a motor, which is coupled to a filter housing and packs a driving shaft of a flap And a drive part coupled to the bearing packing part to drive the drive shaft, the drive shaft sealing device comprising: a cylindrical bearing part that is fitted in the drive shaft and has one side thereof mounted on the bearing part of the bearing packing part, A seal member coupled to the bracket and mounted in the drive housing of the drive unit; a packing member mounted between the drive shaft and the inner circumferential surface of the seal chamber; And a seal regulator which is bolted to the other side and adjusts the bolt tightening to pressurize the packing member so as to adjust the surface pressure so as to maintain airtightness between the packing member and the drive shaft. Thereby providing a sealing device.

Preferably, the seal chamber includes a body portion, a bearing coupling portion integrally formed at one side of the body portion, coupled to the bearing bracket, and having a plurality of base bolt holes penetrating through the base bolt hole at a predetermined interval, And a regulator coupling unit integrally formed on the other side of the valve unit and coupled to the seal regulator and having a plurality of adjustment bolt grooves.

Preferably, the seal regulator includes: a chamber coupling portion coupled to the regulator coupling portion and having a plurality of adjustment bolt holes; and a seal coupling portion formed integrally with the chamber coupling portion and inserted into the seal chamber, And a pressing portion for pressing the pressing portion.

Preferably, the bearing coupling portion includes a pair of hold down bolt holes formed to have a larger diameter than the base bolt hole and formed at symmetrical positions.

Preferably, the seal chamber further includes a reinforcing washer which is inserted into the base bolt inserted into the hold down bolt hole and reinforces the fastening force of the base bolt.

Preferably, the seal chamber may have an inner diameter larger than an outer diameter of the worm gear so as to be installed through the worm gear connected to the drive shaft.

Preferably, the regulator coupling portion may include a tapered portion having an outer circumferential surface tapered to have a smaller outer diameter toward the body portion.

Preferably, the seal regulator has an inner circumferential surface spaced apart from an outer circumferential surface of the drive shaft by a predetermined distance, thereby preventing interference with the drive shaft during rotation of the drive shaft.

The apparatus may further include a rubber gasket installed between the seal chamber and the bearing bracket to maintain airtightness.

According to another aspect of the present invention, there is provided a drive shaft sealing device for a debris filter, which is coupled to a filter housing and has a bearing packing portion for packing a drive shaft of a flap, and a driving portion coupled to the bearing packing portion, Wherein the gear box of the drive unit is removed to disassemble a pair of base bolts facing each other in a base bolt of a bearing bracket provided in the bearing packing unit, Down bolt installation step of disassembling the remaining base bolts, placing the cylindrical seal chamber in the drive shaft, placing the seal chamber in the drive housing of the drive unit, assembling the base bolt to one side of the seal chamber A seal chamber mounting step for mounting the hold down ball to the bearing bracket, A packing member mounting step of mounting a packing member between the drive shaft and the inner circumferential surface of the seal chamber; mounting and disassembling the split type seal regulator on the drive shaft; And a sealing regulator assembling step of adjusting a surface pressure of the packing member to maintain the airtightness between the packing member and the drive shaft by bolt coupling to the other side of the seal chamber by controlling the degree of bolt tightening, And a height of the head of the hold down bolt is a height at which the hold down bolt protrudes from the seal chamber when the seal chamber and the bearing bracket are engaged with each other. .

Preferably, the seal chamber is formed integrally with one side of the body portion, and is coupled to the bearing bracket. The seal chamber is formed with a plurality of base bolt holes and a diameter larger than that of the base bolt holes, And a regulator coupling part integrally formed on the other side of the body part and coupled to the seal regulator and having a plurality of regulating bolt grooves formed therein; .

Preferably, the seal regulator further includes: a chamber coupling portion coupled to the regulator coupling portion and having a plurality of adjustment bolt holes; and a seal coupling portion formed integrally with the chamber coupling portion, inserted into the seal chamber, And a pressing portion that presses the pressing portion.

Preferably, the assembling of the seal regulator includes: an adjusting bolt adjusting step of adjusting the degree of pressurization of the packing member by adjusting bolt tightness by inserting an adjusting bolt into the adjusting bolt groove and the adjusting bolt hole; And a mounting bolt assembling step of disassembling the adjusting bolt sequentially and fixing a mounting bolt having a length shorter than the adjusting bolt sequentially after the adjustment of the degree of pressurization is completed.

Preferably, the holding down bolt removing step may include a reinforcing washer for strengthening the fastening force of the base bolt installed in the hold down bolt hole.

According to the drive shaft sealing apparatus of the present invention, since the sealing device is attached to the outside of the bearing packing portion for packing the drive shaft of the flap, the existing o-ring is damaged, It is possible to perform a maintenance work in real time regardless of whether or not the maintenance work is performed.

Further, according to the embodiment of the present invention, since the pressing degree of the packing member can be adjusted at the time of assembling the seal regulator, the gap between the drive shaft and the packing member can be adjusted to an appropriate surface pressure, and further tightening operation can be performed later.

Further, since the inner diameter of the seal chamber is made larger than the outer diameter of the worm gear, and the seal regulator is formed in a split type, the disassembling operation of the worm gear assembly can be omitted when installing the present invention. An excellent effect of shortening the working time can be obtained.

In accordance with another aspect of the present invention, there is provided a method for installing a drive shaft of a debris filter, which can perform safe and reliable drive shaft leakage maintenance work while the system of the power plant is kept alive by the hold down bolt, It is possible to obtain an excellent effect of promptly responding to the leakage at any time in real time regardless of the condition of the vehicle.

Further, according to another aspect of the present invention, by using the adjustment bolt having a long length in the process of installing the seal regulator, the operator can obtain an excellent effect of precisely adjusting the degree of pressing of the packing member.

1 is a schematic cross-sectional view showing a configuration of a conventional devise filter.
2 is a cross-sectional view illustrating a state in which a drive shaft sealing device of a devise filter according to an embodiment of the present invention is mounted.
3 is an end view of the driving shaft sealing device of a debris filter according to an embodiment of the present invention.
4 is a perspective view showing a mounted state of a drive shaft sealing apparatus of a debris filter according to an embodiment of the present invention.
5 is an exploded perspective view of a drive shaft sealing apparatus of a debris filter according to an embodiment of the present invention.
6 is a front view showing a seal chamber applied to an embodiment of the present invention.
7 is a front view showing a seal regulator applied to an embodiment of the present invention.
8 is a flowchart showing a method of installing a drive shaft sealing device of a debris filter according to an embodiment of the present invention.
9 is a view showing a hold down bolt applied to an embodiment of the present invention.
10 (a) to 10 (f) are schematic views showing a procedure of a method of installing a drive shaft sealing device of a debris filter according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, the embodiments described below are examples suitable for understanding the technical features of the drive shaft sealing device of the devise filter and the installation method thereof. However, it should be understood that the technical features of the present invention are not limited by the embodiments that are applied or described in the embodiments described below, and various modifications can be made within the technical scope of the present invention.

The drive shaft sealing apparatus 100 of the devisless filter according to the embodiment of the present invention is similar to the embodiment shown in Figure 2 except that the drive shaft sealing apparatus 100 of the present invention is connected to the filter housing 11 and packs the drive shaft 31 of the flap 20 A bearing packing part 40 and a driving part 30 coupled to the bearing packing part 40 and driving the driving shaft 31. [

2 to 5, a drive shaft sealing apparatus 100 of a debris filter according to an embodiment of the present invention is provided with a cylindrical shape and is fitted to a drive shaft 31. One end of the drive shaft sealing apparatus 100 is connected to a bearing packing unit 40 A seal chamber 200 coupled to the bearing bracket 43 and mounted inside the drive housing 34 of the drive unit 30 and a packing member 30 mounted between the drive shaft 31 and the inner circumferential surface of the seal chamber 200, The packing member 300 and the drive shaft 31 are bolted to the other side of the seal chamber 200 so that the bolt tightening is controlled to press the packing member 300, And a seal regulator (400) for controlling the surface pressure so as to maintain the airtightness between the seal ring (31).

The seal chamber 200 is provided in a cylindrical shape and is fitted in the drive shaft 31 of the flap 20 and may be installed inside the drive housing 34 of the drive unit 30. [ One side may be coupled with the bearing bracket 43 provided on the bearing packing part 40.

That is, the seal chamber 200 is formed by removing the gear box 33 of the drive unit 30 and then inserting a hollow portion into the drive shaft 31. The seal chamber 200 is provided inside the drive housing 34 provided on the drive shaft 31 Lt; / RTI >

Accordingly, the seal chamber 200 can be positioned between the bearing packing portion 40 and the gear box 33. Therefore, as will be described later, an embodiment of the present invention can perform an installation work for sealing without separating the drive shaft 31 and the bearing packing part 40, and the cooling water leaks into the gear box 33 Can be effectively blocked.

The seal chamber 200 may be configured to have an inner diameter larger than the outer diameter of the worm gear 32 such that the seal chamber 200 can pass through the worm gear 32 connected to the drive shaft 31. That is, the inner diameter of the seal chamber 200 can be made to the minimum permissible dimension in consideration of the outer diameter of the worm gear 32.

This eliminates the need to separate the assembly of the worm gear 32 when installing the seal chamber 200, so that the installation work is simple and the installation time is shortened.

On the other hand, the packing member 300 can be mounted between the drive shaft 31 and the inner peripheral surface of the seal chamber 200.

At this time, the packing member 300 may be made of, for example, a pump packing, and the packing member 300 may be made of, for example, Teflon.

Accordingly, since the packing member 300 is made of easily obtainable material, it is possible to perform rapid maintenance and economical effect in terms of cost. Since the packing member 300 can secure a wide contact area, it is possible to effectively compensate for the disadvantage of leakage from the thin contact of the O-ring. Since the lubricating property of the pump packing can eliminate the frictional resistance against the rotational motion, the journal face of the flap drive shaft 31 can be protected. In addition, the packing member 300 provides an advantage that real time control of the surface pressure can be achieved by the seal regulator 400, which will be described later, due to the material characteristics of the pump packing.

In addition, as in the illustrated embodiment, a plurality of packing members 300 are mounted so as to overlap with each other, thereby maximizing the sealing effect.

The types and materials and the number of the packing members 300 are not limited to those described above and may be provided between the drive shaft 31 and the seal chamber 200 to affect the rotation of the drive shaft 31 It is possible to perform various deformation operations as long as the leakage of the seawater can be effectively blocked.

3, 4 and 7, the seal regulator 400 is of a split type and is mounted on the drive shaft 31 and is bolted to the other side of the seal chamber 200. By adjusting the bolt tightness By pressurizing the packing member 300, the surface pressure can be adjusted so that the airtightness between the packing member 300 and the drive shaft 31 is maintained.

Specifically, the seal regulator 400 may be divided into two or more, as in the embodiment shown in Figs. 4 and 7. The divided seal regulator 400 may be assembled to the drive shaft 31 so as to surround the drive shaft 31 at the time of engagement.

Accordingly, since the seal regulator 400 can be mounted without disassembling the worm gear 32 assembly of the flap driving unit 30, the heating operation and the like performed to separate the conventional worm gear 32 assembly can be omitted , The working time can be shortened and the effect of protecting the tooth surface of the worm gear 32 can be obtained.

The seal regulator 400 is fastened to the other side of the seal chamber 200 with a bolt. At this time, the extent to which the packing member 300 is pressed can be adjusted by adjusting the tightness of the bolt. 3, when the seal regulator 400 is initially mounted at a predetermined distance ("A" portion in FIG. 3) from the seal chamber 200 when the seal regulator 400 is initially mounted, It is possible to perform the leak prevention work simply by further pressing by the interval.

Thus, the seal regulator 400 can provide the effect of maintaining the surface pressure to such an extent that the sealing member 300 and the drive shaft 31 can be kept airtight.

According to the drive shaft sealing apparatus 100 of the devis filter of the embodiment of the present invention, the drive shaft sealing apparatus 100 is mounted on the outside of the bearing packing unit 40 for packing the drive shaft 31 of the flap 20 It is possible to perform the maintenance work in real time regardless of the condition of the system when the seawater is leaked due to the damage of the existing o-ring.

In addition, one embodiment of the present invention can adjust the degree of pressing of the packing member 300 when the seal regulator 400 is assembled, so that it can be adjusted to an appropriate surface pressure, and further tightening operation can be performed later.

The inner diameter of the seal chamber 200 is made larger than the outer diameter of the worm gear 32 and the seal regulator 400 is formed in a split type so that the disassembling operation of the worm gear 32 assembly is omitted It is possible to obtain an excellent effect of shortening the working time without being restricted by the space at the time of the leakage maintenance work.

3, 5 and 6, the seal chamber 200 includes a body portion 210 and a bearing bracket 43 integrally formed on one side of the body portion 210, And a plurality of base bolt holes 231 formed at the other side of the body 210 and coupled to the seal regulator 400. The plurality of base bolt holes 231 are integrally formed with a plurality of And a regulator coupling portion 250 having an adjustment bolt groove 251 formed therein.

Specifically, the body portion 210 may have a cylindrical shape having a hollow portion therein.

The bearing coupling part 230 is integrally formed on one side of the body part 210 and protrudes in the form of a flange so as to be in surface contact with the bearing bracket 43 and be bolted thereto. At this time, the plurality of base bolt holes 231 through which the base bolts 203 engaged with the bearing brackets 43 are inserted may be formed to be spaced apart from each other by a predetermined distance.

The regulator coupling part 250 may be integrally formed on the other side of the body part 210 and may be formed thicker than the thickness of the body part 210 to form the regulating bolt groove 251. The adjustment bolt groove 251 may be fastened with a mounting bolt 403 for coupling the seal regulator 400 and the seal chamber 200.

The bearing coupling portion 230 may include a pair of hold down bolt holes 233 formed to have a diameter larger than that of the base bolt holes 231 and passing through symmetrical positions.

It is necessary to disassemble the pair of base bolts 203 facing each other before disassembling the base bolts 203 of the bearing brackets 43 to dispose the bolt head 201a in the hold down It is possible to provide the bolts 201 so that the bearing bracket 43 can withstand the internal pressure inside the filter housing 11. [ In this case, since the head 201a of the hold down bolt 201 protrudes through the hold-down bolt hole 233, the seal chamber 200 can be securely attached to the bearing bracket 43 Can be mounted. A detailed description of the hold down bolts 201 will be given later in the following installation method.

3, 5, and 7, the seal regulator 400 includes a chamber coupling portion 410 coupled to the regulator coupling portion 250 and having a plurality of adjustment bolt holes 411, And a pressing part 430 integrally formed with the sealing part 410 and inserted into the seal chamber 200 to press the packing member 300.

More specifically, the chamber coupling part 410 includes an adjusting bolt hole 411 corresponding to the adjusting bolt groove 251 of the regulator coupling part 250, and the adjusting bolt hole 411 is formed in the regulator coupling part 250 by the mounting bolt 403. [ Respectively.

The pressing portion 430 is formed integrally with the chamber coupling portion 410 and can be inserted into the seal chamber 200 to press the packing member 300. At this time, by pressurizing the packing member 300 to an appropriate degree by the pressing portion 430, the surface pressure between the packing member 300 and the drive shaft 31 can be maintained to a degree suitable for hermetic sealing.

The seal chamber 200 may further include a reinforcing washer 270 fitted in the base bolt 203 inserted in the hold down bolt hole 233 to reinforce the fastening force of the base bolt 203.

Since the hold down bolt hole 233 has a larger diameter than the other base bolt holes 231, the base bolt 203 for mounting the seal chamber 200 and the fastening force Can be weakened.

Therefore, the present invention can obtain the effect of improving the fastening force of the base bolt 203 by assembling the reinforcing washer 270 together with the base bolt hole 231 in the hold down bolt hole 233.

3 and 5, the regulator coupling portion 250 of the seal chamber 200 includes a tapered portion 253 (hereinafter referred to as a " tapered portion ") having an outer peripheral surface tapered so as to have an outer diameter narrower toward the body portion 210 ).

Accordingly, a working space for use of the tool for disassembling or assembling the hold down bolt 201 and the base bolt 203 is secured during assembly of the seal chamber 200, thereby providing an advantageous effect to the precise work of the operator .

3, the seal regulator 400 may be provided such that the inner circumferential surface thereof is spaced apart from the outer circumferential surface of the drive shaft 31 by a predetermined distance ("A" portion in FIG. 3).

Accordingly, the seal regulator 400 can be configured to prevent interference when the drive shaft 31 rotates after being assembled.

Meanwhile, an embodiment of the present invention may further include a rubber gasket 500 installed between the seal chamber 200 and the bearing bracket 43 to maintain the airtightness.

At this time, the rubber gasket 500 is formed to correspond to the shape of the bearing coupling portion 230 of the seal chamber 200, and can be sandwiched between the bearing bracket 43 and the bearing coupling portion 230. This provides an effect of further increasing the sealing force of the drive shaft sealing apparatus 100.

Hereinafter, a method of installing the drive shaft sealing apparatus 100 of the devis filter according to another aspect of the present invention will be described with reference to FIGS. 2 to 10. FIG.

2 to 7 show a drive shaft sealing apparatus 100 of a debris filter according to an embodiment of the present invention. 8 is a flowchart showing a method of installing a drive shaft sealing apparatus 100 of a debris filter according to another aspect of the present invention. Fig. 9 shows a hold down bolt 201 10 (a) to 10 (f) are cross-sectional views schematically illustrating a process for installing a driving shaft sealing apparatus 100 of a debris filter according to an embodiment of the present invention.

However, in the following description, Since it is a method for installing the drive shaft sealing device 100 of the debris filter, duplication of detailed description of the same constitution will be omitted.

Referring to FIG. 8, a method of installing a drift shaft sealing apparatus 100 of a debris filter according to another aspect of the present invention includes a step S110 of installing a hold down bolt, a step of installing a seal chamber S130, A holding-down bolt removing step (S150), a packing member mounting step (S170), and a seal regulator assembling step (S190).

The step of installing the hold down bolts (S110) includes the steps of removing the gear box 33 of the drive portion 30 and removing the gear box 33 from the bearing packing portion 40 as in the embodiment shown in Figs. 8 and 10 Down can be performed by disassembling a pair of base bolts 203 at opposite positions of the base bolts 203 of the bearing bracket 43 and assembling a pair of hold down bolts 201 at the positions .

9, the hold down bolts 201 are arranged such that the height of the head 201a is smaller than the height of the hold down bolts 201 when the seal chamber 200 and the bearing bracket 43 are engaged with each other, ) To the outside.

That is, the hold down bolts 201 are formed on the basis of the length of the stud bolts used as the base bolts 203, and the heads 201a may be integrally formed to have a length of about half the total length. At this time, the length of the head 201a of the hold down bolt 201 may be longer than the thickness of the bearing coupling part 230 of the seal chamber 200. Accordingly, after the seal chamber 200 is installed, the head portion of the hold down bolt 201 can be protruded to the outside of the bearing engagement portion 230 of the seal chamber 200.

The holding down bolts 201 are formed such that the bolt head 201a is thick so that in the process of disassembling the other base bolts 203 of the bearing bracket 43 and installing the seal chamber 200, (201) can prevent the bearing bracket (43) from falling due to the internal pressure inside the filter housing (11).

Thus, the hold-down bolts 201 provide an excellent effect of enabling the safe and reliable operation of the leakage preventing maintenance work of the drive shaft 31 in a state where the system of the power plant is alive.

Accordingly, the drive shaft sealing apparatus 100 of the present invention can immediately respond to the leakage in real time at any time regardless of the condition of the power plant, without performing maintenance work in parallel at the time of planned preventive maintenance.

Thereafter, in the seal chamber setting step S130, the remaining base bolts 203 are disassembled as in the embodiment shown in Figs. 8 and 10 (b), and the seal chamber 200, which is provided in a cylindrical shape, And then attaching the base bolt 203 to the bearing bracket 43 so that one side of the seal chamber 200 is connected to the bearing bracket 43.

At this time, even after disassembling the nut of the base bolt 203 provided as the stud bolt, the hold down bolt 201 supports the internal pressure of the bearing bracket 43, so that the seal chamber 200 can be safely installed.

The hold down bolt removing step S150 performed after the seal chamber setting step S130 is performed is the same as the embodiment shown in Figs. 8 and 10C, except that the hold down bolt 201 is removed and the base bolt 203). ≪ / RTI >

Here, when the base bolt 203 is installed in the hold down bolt hole 233, it can be mounted together with the reinforcing washer 270. Accordingly, the diameter of the hold down bolt hole 233 is formed larger than that of the other base bolt holes 231, so that the weakened fastening force can be reinforced.

Thereafter, the packing member mounting step S170 is performed by mounting the packing member 300 between the drive shaft 31 and the inner peripheral surface of the seal chamber 200 as in the embodiment shown in Figs. 8 and 10 (d) .

At this time, the packing member 300 may consist of a plurality of the seal members 300 and may be sequentially inserted into the seal chamber 200. Examples of the material and kind of the packing member 300 are as described above, but the present invention is not limited thereto.

After the package member mounting step, the seal regulator assembling step (S190) may be performed. The seal regulator assembling step S190 is a step in which the seal regulator 400 having a split type is assembled to the drive shaft 31 and bolted to the other side of the seal chamber 200, The surface pressure can be adjusted so that the airtightness between the packing member 300 and the drive shaft 31 is maintained.

In detail, the seal regulator assembling step S190 may include an adjusting bolt adjusting step S191 and a mounting bolt assembling step S193.

10 (e), the adjusting bolt adjusting step S191 is a step of adjusting the bolt tightening by inserting the adjusting bolt 401 into the adjusting bolt groove 251 and the adjusting bolt hole 411 And adjusting the degree of pressing of the packing member 300. [

The stud bolt provided to the adjustment bolt 401 is formed to have a size that protrudes outside the regulator coupling portion 250 of the seal chamber 200 after the seal regulator 400 is assembled to the seal chamber 200 desirable.

As described above, by using the adjustment bolt 401 having a long length, the operator can easily perform the bolt tightening operation for precisely adjusting the degree of pressing of the packing member 300.

10 (f), the mounting bolt assembling step (S193) is a step of assembling the adjusting bolts 401 sequentially after the adjustment of the degree of pressurization is completed in the adjusting bolt 401 adjusting step, And fastening a mounting bolt 403 shorter than the adjusting bolt 401. [0050] As shown in Fig.

At this time, it is preferable that the mounting bolts 403 are sequentially assembled so as to maintain the degree of pressurization adjusted by the adjustment bolts 401. The length of the mounting bolt 403 can be made to a length that does not protrude from a nut that is assembled to the mounting bolt 403 after the seal regulator 400 is installed in the seal chamber 200. That is, the length of the mounting bolt 403 may be shorter than the length of the adjusting bolt 401.

Therefore, after the drive shaft sealing device 100 including the seal regulator 400 is fully mounted, the gear box 33 of the drive unit 30 ) Can be easily installed without interfering with the bolts.

According to the drive shaft sealing apparatus of the present invention, since the sealing device is attached to the outside of the bearing packing portion for packing the drive shaft of the flap, the existing o-ring is damaged, It is possible to perform a maintenance work in real time regardless of whether or not the maintenance work is performed.

Further, one embodiment of the present invention can adjust the degree of pressing of the packing member at the time of assembling the seal regulator, so that it can be adjusted to an appropriate surface pressure, and further tightening work can be performed later.

Further, since the inner diameter of the seal chamber is made larger than the outer diameter of the worm gear, and the seal regulator is formed in a split type, the disassembling operation of the worm gear assembly can be omitted when installing the present invention. An excellent effect of shortening the working time can be obtained.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as set forth in the following claims It will be appreciated that those skilled in the art will readily understand the present invention.

100: Drive shaft sealing device of debris filter 200: Seal chamber
201: hold down bolt 203: base bolt
210: Body part 230: Bearing coupling part
233: Holddown bolt hole 250: Regulator coupling part
251: adjusting bolt groove 300: packing member
400: Seal regulator 401: Adjusting bolt
403: mounting bolt 410: chamber coupling part
430: pressing part 500: rubber gasket
10: Debris filter 20: flap
31: drive shaft 34: drive housing

Claims (14)

The filter housing is coupled to the drive shaft of the flap And a drive unit coupled to the bearing packing unit and driving the drive shaft, the drive shaft sealing apparatus comprising:
A seal chamber provided in a cylindrical shape and fitted to the drive shaft, one side of which is engaged with a bearing bracket provided on the bearing packing portion, and which is mounted inside the drive housing of the drive portion;
A packing member mounted between the drive shaft and the inner circumferential surface of the seal chamber; And
A sealing member mounted on the drive shaft and bolted to the other side of the seal chamber so as to pressurize the packing member by adjusting bolt tightness to adjust the surface pressure to maintain the airtightness between the packing member and the drive shaft, regulator;
And a drive shaft sealing device for sealing the drive shaft of the debris filter.
The seal assembly of claim 1,
A body portion;
A bearing coupling part integrally formed on one side of the body part and coupled with the bearing bracket, the bearing coupling part having a plurality of base bolt holes penetratingly spaced apart from each other; And
A regulator coupling part integrally formed on the other side of the body part and coupled with the seal regulator and having a plurality of adjustment bolt grooves;
And a drive shaft sealing device for sealing the drive shaft of the debris filter.
The seal apparatus according to claim 2, wherein the seal regulator includes:
A chamber coupling portion coupled to the regulator coupling portion and having a plurality of adjustment bolt holes; And
A pressing part formed integrally with the chamber engaging part and inserted into the seal chamber to press the packing member;
And a drive shaft sealing device for sealing the drive shaft of the debris filter.
The bearing device according to claim 2,
A pair of hold down bolt holes formed at diameters greater than the base bolt holes and formed at symmetrical positions; And a drive shaft sealing device for sealing the drive shaft of the debris filter.
5. The method of claim 4,
Wherein the seal chamber further comprises a reinforcing washer which is fitted in a base bolt inserted into the hold down bolt hole and reinforces a fastening force of the base bolt.
The method according to claim 1,
Wherein the seal chamber has an inner diameter larger than an outer diameter of the worm gear so that the seal chamber can be installed through the worm gear connected to the drive shaft.
3. The method of claim 2,
Wherein the regulator coupling portion includes a tapered portion having an outer circumferential surface tapered so as to have a smaller outer diameter toward the body portion.
The seal apparatus according to claim 3, wherein the seal regulator includes:
Wherein the inner circumferential surface is spaced apart from the outer circumferential surface of the drive shaft by a predetermined distance so as to prevent interference during rotation of the drive shaft.
9. The method according to any one of claims 1 to 8,
And a rubber gasket installed between the seal chamber and the bearing bracket to maintain airtightness.
A method of installing a drive shaft sealing device on a debris filter having a bearing packing part coupled to a filter housing and packing a driving shaft of a flap, and a driving part coupled to the bearing packing part and driving the driving shaft,
A gear box of the driving unit is removed and a pair of base bolts facing each other in a base bolt of a bearing bracket provided in the bearing packing unit is disassembled and a hold down bolt is installed to correspond to the internal pressure of the filter housing Hold down bolt installation phase;
A seal chamber mounting step of disassembling the remaining base bolts, placing a seal chamber provided in a cylindrical shape in the drive shaft, placing the seal chamber in the drive housing of the drive unit, assembling the base bolt and coupling one side of the seal chamber to the bearing bracket;
A hold down bolt removing step of removing the hold down bolt and mounting a base bolt;
A packing member mounting step of mounting a packing member between the drive shaft and the inner peripheral surface of the seal chamber;
Wherein a seal regulator made of a split type is assembled to the drive shaft and bolted to the other side of the seal chamber so as to pressurize the packing member by adjusting the degree of bolt tightening so as to maintain the airtightness between the packing member and the drive shaft, A seal regulator assembling step of regulating the seal regulator;
Wherein the height of the head of the hold down bolt is a height at which the hold down bolt protrudes from the seal chamber when the seal chamber and the bearing bracket are engaged with each other. Way.
11. The seal assembly of claim 10,
A body portion;
A pair of hold down bolt holes integrally formed on one side of the body and coupled to the bearing bracket and having a plurality of base bolt holes and a diameter larger than that of the base bolt holes and formed at symmetrical positions; A bearing engagement portion including; And
A regulator coupling part integrally formed on the other side of the body part and coupled with the seal regulator and having a plurality of adjustment bolt grooves;
Wherein the drive shaft sealing device is mounted on a vehicle.
12. The compressor according to claim 11, wherein the seal regulator comprises:
A chamber coupling portion coupled to the regulator coupling portion and having a plurality of adjustment bolt holes; And
A pressing part formed integrally with the chamber engaging part and inserted into the seal chamber to press the packing member;
Wherein the drive shaft sealing device is mounted on a vehicle.
13. The method of claim 12, wherein the step of assembling the seal-
An adjusting bolt adjusting step of adjusting the degree of pressing of the packing member by adjusting bolt tightness by inserting an adjusting bolt into the adjusting bolt groove and the adjusting bolt hole; And
A mounting bolt assembling step of disassembling the adjusting bolt sequentially and fixing a mounting bolt having a shorter length than the adjusting bolt after the adjustment of the degree of pressure is completed in the adjusting bolt adjusting step;
Further comprising the step of mounting the drive shaft sealing device on the debris filter.
14. The method of any one of claims 11 to 13, wherein the hold down bolt removal step comprises:
And a reinforcing washer for reinforcing a fastening force is mounted on a base bolt provided in the hold down bolt hole.
KR1020150154088A 2015-11-03 2015-11-03 Sealing device for drive shaft of debris filter and installation method thereof KR101739201B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109529435A (en) * 2018-12-29 2019-03-29 安呈波 A kind of fast changeable filter screen for sewage treatment
KR20220036623A (en) 2020-09-16 2022-03-23 김범진 Construction Methods For Slope Tree-Planting For Slope Area By Cutting

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002181197A (en) * 2000-12-15 2002-06-26 Nippon Valqua Ind Ltd Gland packing, and sealing device using the same
KR200426800Y1 (en) * 2006-07-06 2006-09-15 서정권 Debris-filter bearing-packing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109529435A (en) * 2018-12-29 2019-03-29 安呈波 A kind of fast changeable filter screen for sewage treatment
CN109529435B (en) * 2018-12-29 2021-04-06 广州市海珠羊城环保有限公司 A but, quick replacement's filter screen for sewage treatment
KR20220036623A (en) 2020-09-16 2022-03-23 김범진 Construction Methods For Slope Tree-Planting For Slope Area By Cutting

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