JP5018709B2 - Moving electrode type electrostatic precipitator and method for carrying in member of moving electrode type electrostatic precipitator - Google Patents

Description

  The present invention relates to carrying an exchange member into a dry electrostatic precipitator used for electric power and industrial smoke exhaust equipment, and more particularly to a moving electrode type electrostatic precipitator using a moving electrode as a dust collecting electrode and a member carrying method thereof.

  An outline of the structure of a general moving electrode type electrostatic precipitator is shown in FIG. In the electrostatic precipitator 1, a plurality of fixed electrodes 3 and moving electrodes 4 are installed as dust collecting electrodes in a casing 2 in which a gas flow path is formed between a gas inlet 2a and a gas outlet 2b. Yes. A hopper 6 for dropping and collecting the dust collected by the electrodes and a discharge conveyor 7 for discharging the collected dust are provided below each electrode. Further, the hopper 6 is provided with a hopper grating 8 for use in a scaffold during internal work because a coarse material that closes the carry-out conveyor 7 is not mixed.

  FIG. 2 shows an enlarged example of the moving electrode of the electrostatic precipitator. The moving electrode connects the dust collecting electrode plate 9 divided into strips in a suspended state to a pair of endless chains 10 forming a loop, and moves together with the chain 10 by the dust collecting electrode plate motor 11 at an extremely low speed. Dust contained in the gas is collected in the dust collection area 12 serving as a gas flow path. Reference numerals 16 and 17 denote an upper wheel and a lower wheel around which the chain 10 is hung. The dust collected on the dust collecting electrode plate 9 is scraped off by a rotating brush 15 that is rotated by a rotating brush motor 14 that is installed in a non-dust collecting area 13 located below the gas flow path.

  The structure of the moving electrode will be described in detail with reference to FIG. FIG. 3 is a partial cross-sectional view of the cross section taken along line AA of FIG. A loop is formed by a number of discharge electrodes 5 suspended in a gas flow path serving as a dust collection region 12 in the casing 2 and a plurality of dust collection electrode plates 9 suspended from a pair of endless chains 10. The electrode plate 9 moves around the discharge electrode 5 and a plurality of moving electrodes 4 and a pair of brush means 15 for brushing the circulating dust collection electrode plate 9 at a predetermined position, with the dust collection electrode plate 9 interposed therebetween. Provided for each electrode 4. The moving electrode 4 is looped around the upper and lower wheels 16 and 17 so that the loop extends over the dust collection area 12 and the non-dust collection area 13, and a plurality of moving electrodes 4 are formed along the cross section of the gas flow path (dust collection area 12). 3 in 3 sets). The brush means 15 and the lower wheel 17 are disposed in the non-dust collection area 13, and the pair of brush means 15 rotates in the direction of the arrow while the chain 9 rotates in the direction of the arrow. Dust collected on the plate 9 is scraped off.

  In the moving electrode type electrostatic precipitator having the above-described configuration, if the movable portion of the moving electrode 4 is worn for a predetermined period of time, the member needs to be replaced. Specifically, when the dust collecting electrode plate 9, the chain 10, the upper wheel 16, the lower wheel 17, and the rotating brush 15 which are the constituent members of the moving electrode 4 reach the replacement standard for use, the replacement is performed.

  Conventionally, when this type of member replacement is performed, it is common to carry in the exchanged work by bringing the incoming goods into the upper chamber 18. FIG. 6 shows an example of the exchange status of the replacement member. The carry-in item 19 is lifted to the upper part of the dust collector 1 by the carry-in crane 20 and carried into the upper chamber 18, and the worker walks to the upper chamber 18 using the walkway 21, and from above the device. Exchange work is done.

  Patent Document 1 discloses an assembly method using a crane in a novel electric dust collector, in which a moving electrode loop is lifted by a crane and is carried in through an upper opening of a casing of the dust collector. Work is done at the top and bottom of the. Patent Document 2 shows a method for replacing a chain for a moving electrode. One part of an old chain to be replaced is cut off, one end of a new chain is connected to the cut end, and these chains are moved around. The dust collecting electrode plate is sequentially replaced with a new chain.

JP 2000-342994 A JP 2000-342995 A

  However, the height of the electrostatic precipitator is generally about 30 m, and in the above-described conventional member replacement and Patent Document 1, large equipment is required as a loading crane for lifting the loading member, which increases the work cost. In addition, the worker walks to the upper part of the electrostatic precipitator using a corridor or the like and engages in replacement work, which may lead to severe working conditions. In addition, when replacing parts, the casing is provided with a carry-in port. However, due to the strength of the casing and the operation of opening and closing the carry-in port, it is not possible to provide a large carry-in port. There is a risk that the efficiency of the entire replacement work may be reduced by a change of direction in the subsequent casing. Note that Patent Document 2 does not clearly describe the contents related to the member entrance.

  In view of the above-described conventional problems, the present invention facilitates carrying-in work of replacement members and reduces the labor load of workers engaged in replacement work. It aims at providing the member carrying-in method of an apparatus.

In order to solve the above problems, the present invention provides a casing for flowing a dust-containing gas from an inlet to an outlet of a gas, a number of discharge electrodes suspended in a gas flow path serving as a dust collection area in the casing, and a pair of A moving electrode provided with a number of moving electrodes having scraping means for forming a loop by a plurality of dust collecting electrode plates suspended from an endless chain, rotating the discharge electrode, and brushing the circulating dust collecting electrode plate In the electrostatic precipitator, provided at a position below the moving electrode outside the casing, provided on a loading stage for temporarily arranging the components of the moving electrode, and provided on a wall of the casing near the loading stage, the components of the moving electrode equipped with a loading manhole passing into the casing from the loading stage, the moving electrode is cotton dust collecting area and the non-dust collecting zone in the casing The loading stage and the loading manhole are provided in a casing in a non-dust collection area near the moving electrode, and the dust collecting electrode plate in the use state has a gas direction in the width direction. The scraper is suspended along an endless chain along the flow path, and the scraping means is disposed in the longitudinal direction along the width direction of the dust collecting electrode plate. It is carried into the casing from the carry-in manhole .

  Further, the present invention is characterized in that the manhole is a loading manhole for passing the constituent members of the moving electrode from the loading stage into the casing in the same direction as the usage state thereof.

  Further, according to the present invention, the dust collecting electrode plate is suspended from an endless chain so that the width direction of the dust collecting electrode plate is along the gas flow path when in use, and the dust collecting electrode plate is moved in the width direction of the dust collecting electrode plate from the loading manhole into the casing. It is carried in.

  Further, the present invention is characterized in that a plurality of the loading stages and loading manholes are provided in the casing corresponding to the respective moving electrodes.

The present invention also includes a casing for flowing dust-containing gas from the gas inlet to the outlet, a number of discharge electrodes suspended in a gas flow path serving as a dust collection area in the casing, and a pair of endless chains. A plurality of moving electrode type electric electrodes provided with a plurality of moving electrodes having scraping means for forming a loop with a plurality of dust collecting electrode plates to circulate the discharge electrode and to brush the circulating dust collection electrode plates at predetermined positions In the member carrying-in method for carrying a member into a dust collector, the moving electrode is disposed along a cross-section of the gas flow path over a dust collecting area and a non-dust collecting area in the casing, and the moving electrode of the moving electrode outside the casing is arranged . A component of the moving electrode is temporarily arranged on a loading stage provided at a lower position, and the member is used from a loading manhole provided on a wall of the casing near the loading stage. State is passed through within the casing in the same direction as, characterized by carrying the non-dust region of the moving electrode.

  According to the present invention, the moving electrode is disposed along the cross-section of the gas flow path over the dust collection area and the non-dust collection area in the casing, and the member is moved from the loading manhole to the non-dust collection area of the moving electrode. It is carried in.

  According to the present invention, large-sized equipment is not required as a loading crane, and the efficiency of moving members from the loading port of the casing of the moving electrode type electrostatic precipitator is improved, and the efficiency of moving and mounting the members after loading is improved. It is possible to improve the working environment of the operator.

  The configuration of the embodiment of the present invention is shown in FIGS. In each figure, the same parts as those in the above figures are indicated by the same reference numerals.

  In FIG. 4, reference numeral 2 c denotes a vertical wall of the casing 2 located near the lower side of the moving electrode 4, which is a vertical (vertical) casing portion that intersects the horizontal gas flow (gas flow path). It is formed to extend downward from the inclined wall of the casing 2 in the vertical direction toward the hopper 6. 22 is a loading stage provided so as to project laterally from the lower end of the vertical wall 2c (the upper end of the hopper 6) at a position below the moving electrode 4, and is a component of the moving electrode 4 at the time of loading when parts are replaced. Large members such as the dust collecting electrode plate 9, the rotating brush (dust scraping means) 15, and the chain 10 are temporarily arranged. In FIG. 4, for example, the rotating brush is temporarily arranged as indicated by reference numeral 15a.

  Reference numeral 23 denotes a loading manhole opened in the vertical wall 2c in the vicinity of the loading stage 22, which is closed by a lid (not shown) when the apparatus is used, and gas inside the casing leaks to the outside. Is prevented.

  The loading manhole 23 is opened when the member is exchanged, and allows the member temporarily placed on the loading stage 22 to pass through the casing 2 from the loading stage 22 in the same direction as the use state. In FIG. 4, for example, the rotating brush has a rotation axis direction (longitudinal direction) as indicated by reference numeral 15 in the horizontal direction (lateral direction) along the gas flow direction (gas flow path direction) in use. In this case, the rotary brush 15a on the carry-in stage 22 is moved in the same horizontal direction as that in use, that is, in the rotation axis direction (longitudinal direction) indicated by an arrow (leftward in the figure), and as shown by reference numeral 15b 23 is passed. Then, the rotating brush carried in the casing 2 is carried and attached to the replacement position indicated by reference numeral 15 in the same posture without changing the direction from the position indicated by reference numeral 15b. Here, the axial direction of the rotating brush 15 is attached along the width direction of the dust collecting electrode plate 10.

  In addition, the dust collecting electrode plate 9 is in use, and its width direction is a horizontal direction (lateral direction) along the gas flow direction (gas flow path direction), and when carrying in, along the width direction (horizontal direction). The carry-in manhole 23 is passed. And the dust collecting electrode plate 9 carried in inside the casing 2 is carried to an exchange position with an attitude | position as it is, without changing a direction, and is attached to the chain 10 (not shown).

  As described above, by providing the loading manhole 23 in the lateral (vertical) direction with respect to the gas flow in the lateral direction, the constituent members of the moving electrode 4 can be passed through the loading manhole 23 in the same direction as in use. In the casing, it is possible to attach the member after carrying in at a predetermined position without changing the direction, the efficiency of carrying in and work in the casing 2 is improved, and the space is small.

  Also, as shown in FIGS. 3 and 4, a plurality of sets of the moving electrodes 4 are arranged along the cross section of the gas flow path so as to cross the dust collection area 12 and the non-dust collection area 13 in the casing 2. The loading stage 22 and the loading manhole 23 are provided on the vertical wall 2 c of the casing 2 in the non-dust collecting area 13 in the vicinity of the moving electrode 4. The non-dust-collecting area 13 in the casing 2 is an area where dust collected on the dust-collecting electrode plate 9 is scraped off by the rotating brush 15, and since there is no discharge electrode 5 as a member, it is suitable as a member replacement area. ing. That is, it is possible to efficiently attach the moving electrode 4 to the chain 10 and to attach the rotary brush 15 at a predetermined position.

  Moreover, the worker engaged in the work can obtain a stable scaffold by the loading stage 22 and the hopper grating 8 and can reduce the load of the replacement work.

  FIG. 5 is an explanatory view of the replacement member loading situation in the present embodiment. The exchanged item 19 is lifted and temporarily arranged on the loading stage 22 by the loading crane 20. Furthermore, it is carried into the casing 2 of the electric dust collector 1 from the carry-in manhole 23. At this time, the dust collecting electrode plate 9 is carried in the width direction and the rotating brush 15 is carried in the axial direction (longitudinal direction), and is carried in the same direction as the use situation, and there is no need for incidental work such as internal direction change. Become.

  The same effect is obtained when a fixed brush (not shown) is used in addition to the rotating brush 15 as the dust scraping means. In other words, by carrying the fixed brush in the longitudinal direction, which is the same as the usage situation, incidental work such as changing the direction inside becomes unnecessary.

  Further, the worker moves to a manhole 24 provided on the side surface of the lowermost casing 2 using the corridor 21 and engages in replacement work.

  Here, the height of the electrostatic precipitator 1 is about 30 m as described above, but the height to the loading stage 22, the loading manhole 23, and the working manhole 24 for the lowermost worker is as follows: Since the height of the hopper 6 is about 15 m, the carry-in crane 20 for lifting the carry-in product 19 does not have to be a large-sized equipment, so that the work cost can be reduced. Furthermore, since the worker who engages in the exchange work moves to the carry-in stage 22, the carry-in manhole 23, and the lowermost worker manhole 24 using the corridor 21, the working conditions of the carry-in and exchange work can be reduced. . As described above, by installing the loading stage 22 and the loading manhole 23 in the casing portion in the vertical (vertical) direction with respect to the gas flow in the horizontal direction, it is possible to reduce loading and replacement work.

  A plurality of carry-in manholes 23 are provided corresponding to each moving electrode. That is, as shown in FIG. 3, a plurality of sets of the moving electrodes 4 are arranged along the cross section of the gas flow path so as to extend over the dust collection area 12 and the non-dust collection area 13 in the casing 2. A loading manhole 23 is provided at a position surrounded by a broken line of the vertical wall 2 c of the casing of the non-dust collecting area 13. In this case, a plurality of carry-in stages 22 are individually provided corresponding to each carry-in manhole 23, or a common one is provided. By configuring as described above, the member replacement operation can be efficiently performed for any moving electrode 4, and the working environment can be reduced.

It is a figure which shows the outline | summary of the structure of a moving electrode type electrostatic precipitator. It is an enlarged view of the moving electrode of a moving electrode type electrostatic precipitator. It is the fragmentary sectional view which looked at the cross section of the AA line of FIG. 2 from the arrow direction. It is an enlarged view of the principal part structure of this invention Example. It is explanatory drawing of the exchange member carrying-in condition of this invention Example. It is explanatory drawing of the exchange member carrying-in condition of the conventional moving electrode type electrostatic precipitator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Moving electrode type electrostatic dust collector, 2 ... Casing, 3 ... Fixed electrode, 4 ... Moving electrode, 5 ... Discharge electrode, 6 ... Hopper, 7 ... Discharge conveyor, 8 ... Hopper grating, 9 ... Dust collection electrode plate, DESCRIPTION OF SYMBOLS 10 ... Chain, 11 ... Dust collection electrode drive motor, 12 ... Dust collection area, 13 ... Non-dust collection area, 14 ... Rotary brush motor, 15 ... Rotation brush (scraping means), 16 ... Upper wheel, 17 ... Lower wheel, 18 ... upper chamber, 19 ... carry-in goods, 20 ... carry-in crane, 21 ... walkway, 22 ... carry-in stage, 23 ... carry-in manhole, 24 ... manhole.

Claims (7)

A casing for flowing dust-containing gas from the gas inlet to the outlet, a number of discharge electrodes suspended in a gas flow path serving as a dust collection area in the casing, and a plurality of collectors suspended by a pair of endless chains In a moving electrode type electrostatic precipitator comprising a large number of moving electrodes having scraping means for forming a loop with a dust electrode plate to circulate the discharge electrode and brushing the circulating dust collection electrode plate,
A loading stage provided at a position below the moving electrode outside the casing and temporarily arranging the components of the moving electrode, and provided on a wall of the casing near the loading stage, and the components of the moving electrode Provided with a loading manhole that passes from the loading stage into the casing,
The moving electrode is disposed along the cross section of the gas flow path so as to cover the dust collection area and the non-dust collection area in the casing, and the loading stage and the loading manhole are the casing of the non-dust collection area near the moving electrode. Provided in
In use, the dust collecting electrode plate is suspended from an endless chain so that the width direction is along the gas flow path, and the scraping means is a non-dust collecting area whose longitudinal direction is along the width direction of the dust collecting electrode plate. A moving electrode type electrostatic precipitator, wherein the scraping means is carried into the casing from the carry-in manhole in the same longitudinal direction as in use when being carried in . The moving electrode type electrostatic precipitator according to claim 1,
The moving electrode type electrostatic precipitator according to claim 1, wherein the manhole is a loading manhole for passing the constituent members of the moving electrode from the loading stage into the casing in the same direction as the usage state. The moving electrode type electrostatic precipitator according to claim 1 or 2, wherein the dust collecting electrode plate is suspended from an endless chain so that the width direction is along the gas flow path in use, and the dust collecting electrode plate is A moving electrode type electrostatic precipitator which is carried into the casing in the width direction from the carry-in manhole . The moving electrode type electrostatic precipitator according to any one of claims 1 to 3, wherein a plurality of the loading stages and loading manholes are provided in the casing corresponding to the respective moving electrodes. Electrode type electric dust collector. A casing for flowing dust-containing gas from the gas inlet to the outlet, a number of discharge electrodes suspended in a gas flow path serving as a dust collection area in the casing, and a plurality of collectors suspended by a pair of endless chains In a moving electrode type electrostatic precipitator equipped with a large number of moving electrodes having scraping means for forming a loop with a dust electrode plate, circling the discharge electrode, and brushing the circulating dust collecting electrode plate at a predetermined position In the member loading method for loading the member,
The moving electrode is disposed along the cross section of the gas flow path across the dust collection area and the non-dust collection area in the casing,
Temporarily disposing the constituent members of the moving electrode on a loading stage provided at a position below the moving electrode outside the casing;
The member is passed through the casing in the same direction as the use state from a loading manhole provided on the casing wall near the loading stage, and is carried into the non-dust collecting area of the moving electrode. The member carrying-in method of the moving electrode type electrostatic precipitator . 6. The method for carrying in a member of a moving electrode type electrostatic precipitator according to claim 5, wherein the dust collecting electrode plate is suspended from an endless chain so that the width direction is along the gas flow path when in use, and is moved in the width direction during loading. A member carrying-in method for a moving electrode type electrostatic precipitator, wherein the member is carried into the casing from the carrying-in manhole . In the member carrying-in method of the moving electrode type electrostatic precipitator according to any one of claims 5 and 6, the dust collecting electrode plate is suspended from an endless chain so that the width direction thereof is along the gas flow path in use. The scraping means is disposed in the longitudinal direction along the width direction of the dust collecting electrode plate, and the scraping means is carried into the casing from the carry-in manhole in the longitudinal direction during loading. A method for carrying a member of a moving electrode type electrostatic precipitator.

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