CN201876352U - Detecting device of support plate of steam generator - Google Patents
Detecting device of support plate of steam generator Download PDFInfo
- Publication number
- CN201876352U CN201876352U CN 201020640750 CN201020640750U CN201876352U CN 201876352 U CN201876352 U CN 201876352U CN 201020640750 CN201020640750 CN 201020640750 CN 201020640750 U CN201020640750 U CN 201020640750U CN 201876352 U CN201876352 U CN 201876352U
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- China
- Prior art keywords
- take
- steam generator
- cylinder
- rotating shaft
- pick
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- Expired - Lifetime
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Abstract
The utility model relates to a detecting device of a support plate of a steam generator, which comprises multiple sections of air cylinders and detecting probes installed on the multiple sections of air cylinders. Any one section of air cylinder of the multiple sections of air cylinders comprises a piston and an end cover. The detecting device of the support plate of the steam generator also comprises a take-up take-off rope, a motor arranged outside the multiple sections of air cylinders and provided with a reduction gearbox and an encoder, and a take-up device arranged on the internal bottom of the multiple sections of air cylinders. The take-up device comprises a rotating shaft and a take-up pulley which is sheathed on the rotating shaft and is fixedly connected with the rotating shaft. One end of the take-up take-off rope is connected with the piston of the top section of air cylinder, and the other end is connected with the take-up pulley. One end of the rotating shaft extends out of the multiple sections of air cylinders and is connected with the motor. The position that the rotating shaft extends out of the multiple sections of air cylinders is sealed by a sealing device. The detecting device of the support plate of the steam generator adopts the motor to drive the take-up take-off rope, controls the extended length of the air cylinders, and realizes the exact location to the extending amount of the piston of the air cylinder. The utility model transforms the seal between a wire rope and the air cylinder into the seal to the rotating shaft, so that the seal problem can be solved by adopting general sealing modes.
Description
Technical field
The utility model relates to a kind of pick-up unit of steam generator back up pad, particularly relates to a kind of pick-up unit of having realized pinpoint steam generator back up pad.
Background technology
The heat-transfer pipe of steam generator is provided support and is located by back up pad, if back up pad has the accumulation of corrosion product that heat-transfer pipe is corroded and pushes, finally causes breaking of heat-transfer pipe.Because be filled with the radioactivity chilled water in the heat-transfer pipe of steam generator, will cause emissivity to reveal if break, consequence is serious, so be necessary the steam generator back up pad is detected.
1998, U.S. R.Brooks Associates, Inc. company has developed a cover steam generator back up pad testing fixture.It utilizes the back up pad flow orifice as checking passage, mainly checks piping lane zone, each layer of steam generator back up pad center.During installation, have the special-purpose testing fixture that base plate is installed and send into by the existing hand hole level of steam generator, being positioned to lift behind the specific discharge orifice becomes plumbness.The flexible inspection bar of pneumatic actuation moves up and down at steam generator back up pad opening.
With the cylinder of air as power, in case the inner logical pressurized air of going up, under the situation that does not have external force to hinder, cylinder piston can stretch out up to its long status always.Even reach a certain equilibrium state by adjusting internal air pressure and external loading, can make it temporarily rest on a certain position, accurately the location is very difficult but the fluctuation of gaseous tension makes piston, the situation that piston position slowly moves also can occur, and the realization of physical construction and control system also can be very complicated.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of pick-up unit that can realize the pinpoint steam generator back up pad of cylinder overhang.
For solving the problems of the technologies described above, the pick-up unit of a kind of steam generator back up pad of the utility model, comprise more piece cylinder and the detection probe that is installed on the more piece cylinder, arbitrary joint cylinder comprises a piston and one and the rigidly connected end cap of piston in the more piece cylinder; When charging into pressurized air in the cylinder, each saves cylinder and saves next joint by going up most one, stretches out successively; The pick-up unit of steam generator back up pad also comprises the folding and unfolding rope, is positioned at the motor that has reducer casing and scrambler of described more piece cylinder outside and the take-up that is positioned at more piece cylinder inner bottom part; Take-up comprises rotating shaft and the fixed cover take-up reel in rotating shaft; One end of folding and unfolding rope is connected with the piston of going up most a joint cylinder, and the other end is connected with take-up reel; One end of rotating shaft stretches out the more piece cylinder and is connected with motor, and the position that the more piece cylinder is stretched out in rotating shaft is sealed by packoff.
The utility model adopts the motor-driven folding and unfolding rope that has scrambler, the length that control cylinder stretches out, the accurate location of having realized countercylinder piston overhang.
The utility model adopts whole take-up is wrapped in cylinder shell inside, by the rotating shaft transferring power.So just, the sealing between wire rope and the cylinder is converted into the sealing of countershaft, takes conventional sealing means can solve sealing problem.
Description of drawings
Fig. 1 is the cut-open view of the pick-up unit of a kind of steam generator back up pad provided by the utility model.
Among the figure: 1 is scrambler, and 2 is motor, and 3 is reducer casing, and 4 is shaft coupling, and 5 is take-up reel, and 6 is pulley, and 7 are the folding and unfolding rope, and 8 is the more piece cylinder, and 9 are rotating shaft, and 10 is piston, and 11 is end cap, and 12 is mount pad.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
The utility model comprises more piece cylinder 8.Arbitrary joint cylinder comprises that a piston 10 and one and described piston 10 are by the rigidly connected end cap 11 of cylinder wall in the more piece cylinder 8.
The utility model also comprises detection probe.Go up most on the end cap of a displacements of cylinders and by bolt a mount pad 12 is installed, described detection probe is fixed on the described mount pad 12.
The utility model also comprises the motor 2 that is positioned at more piece cylinder 8 outsides.The top of motor 2 is equipped with scrambler 1, and the bottom is equipped with reducer casing 3.
The utility model also comprises the take-up that is positioned at more piece cylinder 8 bases.The take-up reel 5 of fixedlying connected with rotating shaft 9 on this take-up comprises rotating shaft 9 and is enclosed within rotating shaft 9.One end of this rotating shaft 9 stretches out more piece cylinder 8 to be realized being connected by a shaft coupling 4 with described motor 2.
The utility model also comprises a pulley 6 that is positioned at the more piece air cylinder base.This pulley 6 be positioned at respectively save cylinder piston 10 under, this pulley 6 the axle bearing and more piece cylinder 8 base inner walls fix.
The utility model also comprises folding and unfolding rope 7.Folding and unfolding rope 7 is the multiply seizing wire, and its total length equates with total length after more piece cylinder 8 fully stretches out.One end of this folding and unfolding rope 7 is connected with the piston 10 of going up most a joint cylinder, walks around pulley 6 then, and the other end of folding and unfolding rope 7 is connected with take-up reel 5.
The position that more piece cylinder 8 is stretched out in rotating shaft 9 is sealed by packoff.Sealing means is a usual manner, as O-ring seal.
After applying pressurized air in the more piece cylinder 8, each saves cylinder and saves next joint by going up most one, stretches out successively.Take-up reel 5 is driven by the motor 2 that has scrambler 1, motor 2 rotation take-up reeies 5, and the length of control folding and unfolding rope 7 keeps folding and unfolding rope 7 tensioning states, also is the total length that control cylinder stretches out.By motor encoder 1 counting rotating cycle, can calculate 8 real-time the stretching out highly of more piece cylinder.
Whole take-up wraps in more piece cylinder 8 enclosure interior, by rotating shaft 9 transferring power, takes conventional sealing means can solve sealing problem.
Claims (5)
1. the pick-up unit of a steam generator back up pad comprises more piece cylinder and the detection probe that is installed on the more piece cylinder, and arbitrary joint cylinder comprises a piston and one and the rigidly connected end cap of described piston in the described more piece cylinder; When charging into pressurized air in the cylinder, each saves cylinder and saves next joint by going up most one, stretches out successively; It is characterized in that: the pick-up unit of described steam generator back up pad also comprises the folding and unfolding rope, is positioned at the motor that has reducer casing and scrambler of described more piece cylinder outside and the take-up that is positioned at described more piece cylinder inner bottom part; Described take-up comprises rotating shaft and the fixed cover take-up reel in rotating shaft; One end of described folding and unfolding rope is connected with the piston of going up most a joint cylinder, and the other end is connected with take-up reel; One end of described rotating shaft stretches out the more piece cylinder and is connected with described motor, and the position that the more piece cylinder is stretched out in described rotating shaft is sealed by packoff.
2. the pick-up unit of a kind of steam generator back up pad according to claim 1 is characterized in that: described folding and unfolding rope is the multiply seizing wire.
3. the pick-up unit of a kind of steam generator back up pad according to claim 1 is characterized in that: the total length of described folding and unfolding rope equates with total length after described more piece cylinder fully stretches out.
4. the pick-up unit of a kind of steam generator back up pad according to claim 1 is characterized in that: described packoff is an O-ring seal.
5. the pick-up unit of a kind of steam generator back up pad according to claim 1 is characterized in that: be set with a mount pad on the described end cap of going up a displacements of cylinders most, described detection probe is fixed on the described mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020640750 CN201876352U (en) | 2010-12-03 | 2010-12-03 | Detecting device of support plate of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020640750 CN201876352U (en) | 2010-12-03 | 2010-12-03 | Detecting device of support plate of steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876352U true CN201876352U (en) | 2011-06-22 |
Family
ID=44164268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020640750 Expired - Lifetime CN201876352U (en) | 2010-12-03 | 2010-12-03 | Detecting device of support plate of steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486436A (en) * | 2010-12-03 | 2012-06-06 | 核动力运行研究所 | Detection device for steam generator supporting plate |
-
2010
- 2010-12-03 CN CN 201020640750 patent/CN201876352U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486436A (en) * | 2010-12-03 | 2012-06-06 | 核动力运行研究所 | Detection device for steam generator supporting plate |
| CN102486436B (en) * | 2010-12-03 | 2014-01-01 | 核动力运行研究所 | Detection device for steam generator supporting plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |