CN103758353A - Method for mounting side seal plates of drum strainer - Google Patents
Method for mounting side seal plates of drum strainer Download PDFInfo
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- CN103758353A CN103758353A CN201410012314.3A CN201410012314A CN103758353A CN 103758353 A CN103758353 A CN 103758353A CN 201410012314 A CN201410012314 A CN 201410012314A CN 103758353 A CN103758353 A CN 103758353A
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- side seal
- seal board
- filter screen
- frame
- type filter
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Abstract
The invention provides a method for mounting side seal plates of a drum strainer in order to solve the problems of high construction difficulty, waste of manpower and material resources, low operation efficiency and high safety risk in use of mounting methods provided by manufacturers. The method includes: mounting the drum strainer in a pool with two side walls provided with pre-embedded plates, and measuring an axial end face runout value of a frame; subjecting a plurality of side seal plates to end-to-end welding to jointly form a side seal plate group connected to the frame, wherein the side seal plates are provided with fixing studs; turning the drum strainer to enable the side seal plate group to be rotated to a mounting position, welding the tail ends of the fixing studs to corresponding pre-embedded plates, and adjusting positions of the side seal plates; sequentially mounting other side seal plate groups, and integrally welding each two adjacent side seal plates; grouting for fixation. Using the method for mounting the side seal plates of the drum strainer is low in construction difficulty, convenient in quality detection and large in operation space and can shorten the construction period, save manpower and material resources and lower the risks.
Description
Technical field
The present invention relates to the mounting method of equipment in nuclear power station, relate in particular to a kind of mounting method of drum type filter screen side seal board.
Background technology
PX factory building seawater recirculated water CRF system and safe station-service water SEC system respectively have 4 drum type filter screens, drum type filter screen is the nucleus equipment of nuclear power station circulating water filtering system, its function is mainly to remove the suspension pollutant that is greater than mesh diameter in seawater, is one of indispensable vitals of nuclear power station.As depicted in figs. 1 and 2, on the wall 13 of 14 both sides, pond that every drum type filter screen 1 is installed, be provided with the side seal board 3 of shape as shown in Figure 2.
According to producer, instruct mounting method, during installation, fixed bolt opsition dependent size point is welded on the embedded board in pool wall 13 and (now can not be welded), on every embedded board, weld 2 fixed bolts.In pond side walls 13, set respectively a suitable fixed point, measure respectively this distance to main beam 15 two ends of drum type filter screen (each 40 points of every side) record, from numerical value, choose the point the shortest with wall 13 spacing, at this installation side shrouding.Then take this piece side seal board is benchmark, by adjusting leveling nut, remaining side seal board is installed, make each side seal board in same plane, treat all side seal board installation in position, each fixed bolt position is adjusted after passed examination, fixed bolt is all welded on embedded board, on wall by all side seal boards of installation in position in pond, head and the tail splicing is welded into a ring-type integral body successively, and it is smooth to polish flat, burr, overlap should be cleaned out, in order to avoid then scratch sealed rubber plate is in the milk to mounted side seal board fixing.Drum type filter screen is installed after side seal board installation check is qualified again.
Because drum type filter screen pond depth reaches 20m, the fitting operation of side seal board need to complete in narrow space, and need the side seal board number of installation more, after installation, require side seal board in same plane, and the spacing between side seal board and the frame of drum type filter screen has dimensional requirement, between the fixing and side seal board of side seal board set bolt and embedded board, be connected the restriction that is the series of factors such as welding procedure, therefore, if installation side shrouding according to the method described above, can cause side seal board to occur that when mounted difficulty of construction is large, the problem of quality examination difficulty, and the scaffold building in construction is fixed, measure, install, adjust, be welded and fixed and quality examination meeting expends a large amount of manpower and materials, inefficiency, and security risk is high.
Summary of the invention
The difficulty of construction that the drum type filter screen side seal board mounting method that uses producer to provide for solution brings is large, manpower and materials waste, the problem that inefficiency and security risk are high, the present invention proposes a kind of drum type filter screen side seal board mounting method, and the method comprises the following steps:
The first step, is arranged on drum type filter screen in the pond that is provided with embedded board in side walls, measures the axial end jitter values of drum type filter screen frame;
Second step, the first head and the tail welding of some side seal boards is spliced to form to side seal board group, the drum type filter screen axial end jitter values maximum of measuring, each piece side seal board in one group of side seal board group is all removably connected on the frame of described drum type filter screen, on every side seal board, be provided with at least two fixed bolt holes, and in this fixed bolt hole, fixed bolt is installed, and be provided with adjusting nut on described fixed bolt;
The 3rd step, rotating drum-shaped filter screen, the described side seal board group being fixed on described frame is rotated to installation site, then the tail end of the fixed bolt on every side seal board is welded on corresponding embedded board, again described side seal board and the fractionation of described frame are come, adjust described adjusting nut, make the spacing between described side seal board group and the frame end of this drum type filter screen axial runout value maximum reach designing requirement;
The 4th step, according to such scheme, the side seal board group that all the other welding have been spliced is installed successively, after the whole installation in position of described side seal board group, check again and adjust, make the distance of described side seal board and described drum type filter screen frame end meet designing requirement, and each side seal board, in same plane, is then integral adjacent two side seal board bond pads;
The 5th step, carries out the inspection of size and planeness to the side seal board of welding forming, after passed examination, side seal board is in the milk fixing.
Axial end is beated and is referred to that the end face of cylinder class component is the smooth degree of two rounded face (square with the axis plane) of cylinder.Measuring method is, after cylinder class component is fixed in rotating shaft by datum, to rotate this cylinder class component, by the value of measuring after its end face of table contact.The frame end of the axial end jitter values maximum of drum type filter screen is the place nearest with side seal board, and distance meets design requirement herein, and the end of other frames of drum type filter screen and the distance of side seal board all can meet designing requirement.
The side seal board of drum type filter screen is installed with drum type filter screen side seal board mounting method provided by the present invention, first drum type filter screen has been installed, because drum type filter screen is constituted by a plurality of spokes, this drum type filter screen is fixed, after it can not be rotated, the large I of drum type filter screen inner space meets staff freely climbs in this drum type filter screen, has reduced this step of scaffold building when side seal board is installed, reduce construction sequence, improved efficiency of construction.Owing to having adopted the mode of first welding splicing side seal board formation side seal board group outside pond, staff only need be connected into each side seal board assembly welding an integral body in the narrow installation space in pond, without in small space, each side seal board being welded, therefore the welding job amount of staff in narrow installation space greatly reduces, significantly reduced staff's difficulty of construction, quality examination more for convenience, not only can save a large amount of durations and manpower and materials, also reduce security risk simultaneously.
Preferably, be also provided with connecting bolt hole on described side seal board, described side seal board couples together with bolt by described connecting bolt hole and described frame.Further, in described step 2, when described side seal board connects described frame by described connecting bolt hole, used L-type angle steel.On two vertical planes of described L-type angle steel, be provided with the bolt hole identical with described connecting bolt hole size, a vertical plane of described L-type angle steel is connected with described side seal board by bolt, and another vertical plane is connected with described side seal board by bolt.Further, described side seal board is when being fixed on described frame by described L-type angle steel, the vertical distance in the outside of the straight flange that described frame end is connected with described side seal board to described L-type angle steel is just the size that requires of described side seal board and described frame spacing.With described L-type angle steel, determine the distance between described side seal board and described frame, saved the step of adjusting described side seal board position with described adjusting nut, improved operating efficiency.
Preferably, in described step 2, described side seal board is connected by a fixed bolt hole on side seal board with described L-type angle steel, in remaining fixed bolt hole, fixed bolt is installed, in described step 3, rotate described drum type filter screen and make to be fixed on described side seal board group rotation on described frame to installation site, the tail end of mounted fixed bolt on every side seal board is welded on corresponding embedded board, again described side seal board and the fractionation of described L-type angle steel are come, after fractionation, in vacant fixed bolt hole, fixed bolt is installed, and the tail end of these fixed bolts is welded on corresponding embedded board, then adjust described adjusting nut, make the spacing between described side seal board group and the frame end of this drum type filter screen axial runout value maximum reach designing requirement.Drilling operation to described side seal board when above-mentioned setting can reduce construction, has reduced operation, has saved the working time, thereby has improved operating efficiency, reduces the application life that can also extend described side seal board to the operation number of times of described side seal board.
Preferably, described side seal board installs and with distance measurement piece, checks and adjust afterwards, makes the distance of described side seal board and described frame end meet designing requirement; Described distance measurement piece is block structure, and one end is provided with connecting bolt hole, and for distance measurement piece being connected to axial runout value maximum on described frame, the other end is the smooth free end of end face; Described frame end, to the free-ended vertical distance of described distance measurement piece, is just the designing requirement distance of described side seal board and described frame spacing; While checking, be rotatably installed with the drum type filter screen of described distance measurement piece, if friction occurs for the free end of described distance measurement piece and the somewhere of described side seal board, even there is the situation that described drum type filter screen cannot rotate, adjust side seal board, so that the distance between side seal board and described frame end reaches designing requirement distance herein.
Preferably, on described L-type angle steel for the center line in the connecting bolt hole that is connected with described frame the vertical distance to described another vertical plane of L-type angle steel, with on described distance measurement piece for the center line that is fixed to the connecting bolt hole on described frame the equal and opposite in direction to the vertical distance of the free end end face of described distance measurement piece, and for fixing described L-type angle steel and the bolt that is same model for the bolt of fixing described distance measurement piece.Now, bolt hole for fixing described L-type angle steel on described frame is same bolt hole with the bolt hole for fixing described distance measurement piece, while making staff use distance measurement piece to check after installing described side seal board, without described frame is punched again, reduced staff's workload, reduce construction frequency, reduced the operation number of times to described frame simultaneously, extended the application life of described frame.
While using drum type filter screen side seal board mounting method of the present invention to install side seal board, due to first drum type filter screen being installed, drum type filter screen inside is constituted by a plurality of spokes, after this drum type filter screen is fixing, the activities such as the enough staff of its inner space size climb in inside or weld, dismounting, and without setting up scaffold, reduced material resources cost and time cost while installing; Because side seal board is spliced before installation, be welded into side seal board group, the workload of side seal board in installation process reduced, and without carry out multiple welding work in narrow and small installing space, reduced difficulty of construction; And the side seal board after more easily control installing and the distance between the frame of drum type filter screen, reduced the difficulty of quality examination, guaranteed construction quality.
Accompanying drawing explanation
Fig. 1 is the structural representation (part-structure is not shown) of drum type filter screen, and wherein, a side framework is not installed, and opposite side frame is broken away signal;
Fig. 2 is the schematic diagram that side seal board is arranged on the position in pool wall;
To be that in drum type filter screen side seal board mounting method of the present invention, side seal board is soldered be spliced into tetrameric schematic diagram to Fig. 3;
Fig. 4 is the partial schematic sectional view while using L-type angle steel to connect side seal board in drum type filter screen side seal board mounting method of the present invention, and wherein connecting bolt and fixed bolt are not installed;
Fig. 5 is partial schematic sectional view when installing space is measured piece in drum type filter screen side seal board mounting method of the present invention, and wherein connecting bolt is not installed.
The specific embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, a kind of drum type filter screen side seal board mounting method, the method comprises the following steps:
The first step, is arranged on drum type filter screen 1 in the pond 14 that is provided with embedded board 2 in both walls, to drum type filter screen 1 by the axial end jitter values of measuring the frame 11 of drum type filter screen 1 after installation requirement adjustment.
Second step, by first head and the tail welding of some side seal boards 3 splicing, form four side seal board groups 3 ' as shown in Figure 3, and the commissure of these four side seal board groups 3 ' is polished flat, place in the axial end jitter values maximum of the drum type filter screen 1 of measuring, as shown in Figure 4, every side seal board 3 in one group of side seal board group 3 ' that above-mentioned welding has been spliced is all connected on the frame 11 of drum type filter screen by L-type angle steel 12, on every side seal board 3, be provided with fixed bolt hole 31 and connecting bolt hole 32, fixed bolt hole 31 is for installing fixed bolt 311, the afterbody of fixed bolt 311 is to be welded on embedded board 2, and on fixed bolt 311, be provided with adjusting nut 312.Side seal board group 3 ' removably couples together with connecting bolt 321 by connecting bolt hole 32 and a vertical plane of L-type angle steel 12, and another vertical plane of L-type angle steel 12 couples together by bolt 121 and frame 11.
The 3rd step, rotating drum-shaped filter screen, the side seal board group 3 ' being fixed on frame 11 is rotated to installation site, the fixed bolt 311 being arranged in fixed bolt hole 31 is welded on embedded board 2, to disassemble with the L-type angle steel 12 of frame 11 for connecting side seal board group 3 ' again, then adjust adjusting nut 312, make the spacing between side seal board group 3 ' and frame 11 ends of this drum type filter screen axial runout value maximum reach designing requirement, again side seal board group 3 ' is carried out to leveling, then screw adjusting nut 312, side seal board group 3 ' is fixed up, distance between side seal board group 3 ' and frame 11 is remained on and require size, avoiding side seal board group 3 ' to be subject to external force factor impact is offset.
The 4th step, according to such scheme, the side seal board group 3 ' that all the other welding have been spliced is installed successively, after the whole installation in position of side seal board 3, check again and adjust, side seal board 3 is all guaranteed in claimed range apart from the size of drum type filter screen frame, and each side seal board is in same plane, then that adjacent two side seal board groups 3 ' are integrally welded.
The 5th step, checks whether size and the planeness of the side seal board 3 of welding forming meets the requirements, and after passed examination, side seal board 3 is in the milk fixing.
Preferably, side seal board 3 is when being fixed on frame 11 by L-type angle steel 12, and the end of frame 11 is to the vertical distance in the outside of the vertical plane being connected with side seal board 3 on L-type angle steel 12, is just the size that requires of the spacing of side seal board 3 and frame 11.
As shown in Figure 5, after the whole installation in position of side seal board 3, re-using distance measurement piece 4 checks and adjusts, distance measurement piece 4 is rectangular block shape structure, one end is provided with connecting bolt hole 41, for distance measurement piece is connected to the axial runout value maximum on frame 11, the other end is the smooth free end of end face.。The end of frame 11 is to the free-ended vertical distance of distance measurement piece 4, is just the size that requires of the spacing of side seal board 3 and frame 11.While checking, only need be fixed on frame 11 measuring piece 4, then rotating drum-shaped filter screen 1, if strong friction occurs in the somewhere of the free end of distance measurement piece 4 and side seal board 3, even there is the situation that drum type filter screen 1 cannot rotate, side seal board is herein adjusted, thereby made the distance between side seal board and frame 11 herein reach requirement size.After drum type filter screen 1 rotates a circle, distance measurement piece 4 is changed on other positions again and is checked, and adjust the place going wrong, make side seal board 3 apart from the Assurance of Size of frame 11 in claimed range, and each side seal board 3 is in same plane.
Preferably, in described step 2, side seal board 3 is connected by a fixed bolt hole 31 on side seal board 3 with L-type angle steel 12, at the interior installation fixed bolt 311 of remaining fixed bolt hole 31, in described step 3, the side seal board group 3 ' that rotating drum-shaped filter screen 1 makes to be fixed on frame 11 is rotated to installation site, the tail end of mounted fixed bolt 311 on every side seal board 3 is welded on corresponding embedded board 2, again side seal board 3 is split and come with L-type angle steel 12, the vacant interior installation fixed bolt 311 of fixed bolt hole 31 after fractionation, and the tail end of these fixed bolts 311 is welded on corresponding embedded board 2, then adjust adjusting nut 312, make the spacing between side seal board group 3 ' and frame 11 ends of this drum type filter screen 1 axial runout value maximum reach designing requirement.Drilling operation to side seal board 3 when above-mentioned setting can reduce construction, has reduced operation, has saved the working time, thereby has improved operating efficiency, has extended the application life of side seal board 3.
Preferably, on L-type angle steel 12 for the center line of the bolt hole that is connected with frame 11 vertical distance to L-type angle steel 12 another vertical planes outsides, with the center line in connecting bolt hole 41 on distance measurement piece 4 equal and opposite in direction to free-ended vertical distance, and measure for fixed L type angle steel 12 with for constant spacing the bolt that the bolt of piece 4 is same model.Now, on frame 11, for the bolt hole of fixed L type angle steel 12, be same bolt hole with the bolt hole of measuring piece 4 for constant spacing, make staff when installing and having welded the rear use distance measurement of all side seal boards 3 piece and check, without frame 11 is punched again, reduced staff's workload, reduce the operation number of times to frame 11 simultaneously, extended the application life of frame 11.
Claims (7)
1. a drum type filter screen side seal board mounting method, the method comprises the following steps:
The first step, is arranged on drum type filter screen in the pond that is provided with embedded board in side walls, measures the axial end jitter values of drum type filter screen frame;
Second step, the first head and the tail welding of some side seal boards is spliced to form to side seal board group, the drum type filter screen axial end jitter values maximum of measuring, each piece side seal board in one group of side seal board group is all removably connected on the frame of described drum type filter screen, on every side seal board, be provided with at least two fixed bolt holes, and in this fixed bolt hole, fixed bolt is installed, and be provided with adjusting nut on described fixed bolt;
The 3rd step, rotating drum-shaped filter screen, the described side seal board group being fixed on described frame is rotated to installation site, then the tail end of the fixed bolt on every side seal board is welded on corresponding embedded board, again described side seal board and the fractionation of described frame are come, adjust described adjusting nut, make the spacing between described side seal board group and the frame end of this drum type filter screen axial runout value maximum reach designing requirement;
The 4th step, according to such scheme, the side seal board group that all the other welding have been spliced is installed successively, after the whole installation in position of described side seal board group, check again and adjust, make the distance of described side seal board and described drum type filter screen frame end meet designing requirement, and each side seal board, in same plane, is then integral adjacent two side seal board bond pads;
The 5th step, carries out the inspection of size and planeness to the side seal board of welding forming, after passed examination, side seal board is in the milk fixing.
2. drum type filter screen side seal board mounting method according to claim 1, is characterized in that, is also provided with connecting bolt hole on described side seal board, and described side seal board couples together with bolt by described connecting bolt hole and described frame.
3. drum type filter screen side seal board mounting method according to claim 2, it is characterized in that, in described step 2, described side seal board is connected by L-type angle steel with described frame, a vertical plane of described L-type angle steel is connected with described side seal board by bolt, and another vertical plane is connected with described frame by bolt.
4. drum type filter screen side seal board mounting method according to claim 3, is characterized in that, in described step 2, described side seal board is connected by a fixed bolt hole on side seal board with described L-type angle steel, in remaining fixed bolt hole, fixed bolt is installed, in described step 3, the described side seal board group that rotating drum-shaped filter screen makes to be fixed on described frame is rotated to installation site, the tail end of mounted fixed bolt on every side seal board is welded on corresponding embedded board, again described side seal board and the fractionation of described L-type angle steel are come, after fractionation, in vacant fixed bolt hole, fixed bolt is installed, and the tail end of these fixed bolts is welded on corresponding embedded board, then adjust described adjusting nut, make the spacing between described side seal board group and the frame end of this drum type filter screen axial runout value maximum reach designing requirement.
5. drum type filter screen side seal board mounting method according to claim 3, is characterized in that, described side seal board is when being fixed on described frame by described L-type angle steel, and the spacing of described side seal board and described frame end is designing requirement distance.
6. drum type filter screen side seal board mounting method according to claim 5, is characterized in that, described side seal board installs and with distance measurement piece, checks and adjust afterwards, makes the distance of described side seal board and described frame end meet designing requirement; Described distance measurement piece is block structure, and one end is provided with connecting bolt hole, and for distance measurement piece being connected to axial runout value maximum on described frame, the other end is the smooth free end of end face; Described frame end, to the free-ended vertical distance of described distance measurement piece, is just the designing requirement distance of described side seal board and described frame spacing; While checking, be rotatably installed with the drum type filter screen of described distance measurement piece, if friction occurs for the free end of described distance measurement piece and the somewhere of described side seal board, even there is the situation that described drum type filter screen cannot rotate, adjust side seal board, so that the distance between side seal board and described frame end reaches designing requirement distance herein.
7. drum type filter screen side seal board mounting method according to claim 6, it is characterized in that, on described L-type angle steel for the center line in the connecting bolt hole that is connected with described frame the vertical distance to described another vertical plane of L-type angle steel, with on described distance measurement piece for the center line that is fixed to the connecting bolt hole on described frame the equal and opposite in direction to the vertical distance of the free end end face of described distance measurement piece, and for fixing described L-type angle steel with for fixing the bolt that the bolt of described distance measurement piece is same model, now, bolt hole for fixing described L-type angle steel on described frame is same bolt hole with the bolt hole for fixing described distance measurement piece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410012314.3A CN103758353B (en) | 2014-01-10 | 2014-01-10 | Drum type filter screen side seal board mounting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410012314.3A CN103758353B (en) | 2014-01-10 | 2014-01-10 | Drum type filter screen side seal board mounting method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356863A (en) * | 2001-06-01 | 2002-12-13 | Toda Constr Co Ltd | First floor preconstruction method in reverse construction method |
| CN101579589A (en) * | 2009-06-19 | 2009-11-18 | 中冶南方工程技术有限公司 | Corrugated filter screen |
| CN102145236A (en) * | 2011-01-30 | 2011-08-10 | 合肥通用机械研究院 | Filter screen two-level self-cleaning filter |
-
2014
- 2014-01-10 CN CN201410012314.3A patent/CN103758353B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356863A (en) * | 2001-06-01 | 2002-12-13 | Toda Constr Co Ltd | First floor preconstruction method in reverse construction method |
| CN101579589A (en) * | 2009-06-19 | 2009-11-18 | 中冶南方工程技术有限公司 | Corrugated filter screen |
| CN102145236A (en) * | 2011-01-30 | 2011-08-10 | 合肥通用机械研究院 | Filter screen two-level self-cleaning filter |
Non-Patent Citations (2)
| Title |
|---|
| 任萍等: "陡河发电厂循环水泵房旋转滤网改造", 《电力科学与工程》, vol. 24, no. 6, 31 August 2008 (2008-08-31) * |
| 韦品良等: "旋转滤网密封问题的探讨", 《水利电力机械》, no. 4, 31 August 1990 (1990-08-31) * |
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