CN102486436A - Detection device for steam generator supporting plate - Google Patents
Detection device for steam generator supporting plate Download PDFInfo
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- CN102486436A CN102486436A CN2010105721376A CN201010572137A CN102486436A CN 102486436 A CN102486436 A CN 102486436A CN 2010105721376 A CN2010105721376 A CN 2010105721376A CN 201010572137 A CN201010572137 A CN 201010572137A CN 102486436 A CN102486436 A CN 102486436A
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- cylinder
- rotating shaft
- steam generator
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Abstract
The invention relates to a detection device for a steam generator supporting plate. The detection device comprises multiple sections of cylinders, a detection probe, a collecting and releasing rope, a motor and a take-up device, wherein the detection probe is arranged on the multiple sections of cylinders; any section of cylinder of the multiple sections of cylinders comprises a piston and an end cover; the motor is positioned outside the multiple sections of cylinders and is provided with a reduction box and an encoder; the take-up device is positioned at the bottom in the multiple sections of cylinders and comprises a rotating shaft and a take-up reel which is sleeved on the rotating shaft and is fixedly connected with the rotating shaft; one end of the collecting and releasing rope is connected with the piston of the uppermost section of cylinder, and the other end of the collecting and releasing rope is connected with the take-up reel; one end of the rotating shaft extends out of the multiple sections of cylinders to be connected with the motor; and the position where the rotating shaft extends out of the multiple sections of cylinders is sealed by a sealing device. According to the device, the collecting and releasing rope is driven by using the motor to control the extension length of the cylinder, so that accurate positioning for the extension of the piston of the cylinder is realized. According to the invention, sealing between a wire rope and the cylinder is converted into sealing of the rotating shaft, and the sealing problem can be solved by adopting the conventional sealing mode.
Description
Technical field
The present invention relates to a kind of pick-up unit of steam generator back up pad, particularly relate 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, if break causing emissivity to reveal, 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 the inspection 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 through the existing hand hole level of steam generator, being positioned to lift behind the particular stream water hole 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 through adjustment internal air pressure and external loading; Can make it temporarily rest on a certain position; But the fluctuation of gaseous tension makes piston accurately locate very difficulty; 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 matters that the present invention will solve 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 present invention comprises the more piece cylinder and is installed in the detection probe on the more piece cylinder that 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 outside motor that has reducer casing and scrambler of said more piece cylinder 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 present invention 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 present invention 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 present invention.
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 accompanying drawing and embodiment the present invention is done further detailed explanation.
The present invention includes more piece cylinder 8.Arbitrary joint cylinder comprises that a piston 10 and one and said piston 10 are through the rigidly connected end cap 11 of cylinder wall in the more piece cylinder 8.
The present invention 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, said detection probe is fixed on the said mount pad 12.
The present invention 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 present invention also comprises the take-up that is positioned at more piece cylinder 8 bases.The take-up reel 5 that is fixedly 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 said motor 2.
The present invention 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 present invention 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, like 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 that has scrambler 12, motor 2 rotation take-up reeies 5, and the length of control folding and unfolding rope 7 keeps folding and unfolding 7 tensioning states of restricting, and also is the total length that control cylinder stretches out.Through 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 the more piece cylinder and is installed in the detection probe on the more piece cylinder, and arbitrary joint cylinder comprises a piston and one and the rigidly connected end cap of said piston in the said 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 said steam generator back up pad also comprises the folding and unfolding rope, is positioned at outside motor that has reducer casing and scrambler of said more piece cylinder and the take-up that is positioned at said more piece cylinder inner bottom part; Said take-up comprises rotating shaft and the fixed cover take-up reel in rotating shaft; One end of said 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 said rotating shaft stretches out the more piece cylinder and is connected with said motor, and the position that the more piece cylinder is stretched out in said 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: said 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 said folding and unfolding rope equates with total length after said 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: said 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 said end cap of going up a displacements of cylinders most, said detection probe is fixed on the said mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010572137.6A CN102486436B (en) | 2010-12-03 | 2010-12-03 | Detection device for steam generator supporting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010572137.6A CN102486436B (en) | 2010-12-03 | 2010-12-03 | Detection device for steam generator supporting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102486436A true CN102486436A (en) | 2012-06-06 |
| CN102486436B CN102486436B (en) | 2014-01-01 |
Family
ID=46151956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010572137.6A Active CN102486436B (en) | 2010-12-03 | 2010-12-03 | Detection device for steam generator supporting plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN102486436B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835055A (en) * | 2016-06-04 | 2016-08-10 | 无锡市华鹰移动照明有限公司 | Extending-and-contracting mechanical arm for tunnel detection |
| CN105909038A (en) * | 2016-06-04 | 2016-08-31 | 无锡市华鹰移动照明有限公司 | Pneumatic-electric lifting mast |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008209063A (en) * | 2007-02-27 | 2008-09-11 | Mitsubishi Heavy Ind Ltd | Pipe supporting plate for steam generator |
| CN201876352U (en) * | 2010-12-03 | 2011-06-22 | 核动力运行研究所 | Detecting device of support plate of steam generator |
-
2010
- 2010-12-03 CN CN201010572137.6A patent/CN102486436B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008209063A (en) * | 2007-02-27 | 2008-09-11 | Mitsubishi Heavy Ind Ltd | Pipe supporting plate for steam generator |
| CN101622495A (en) * | 2007-02-27 | 2010-01-06 | 三菱重工业株式会社 | Tube support plate of steam generator |
| CN201876352U (en) * | 2010-12-03 | 2011-06-22 | 核动力运行研究所 | Detecting device of support plate of steam generator |
Non-Patent Citations (2)
| Title |
|---|
| 沈海燕等: "支撑板制造质保系统中人员可靠性评估的模糊优选模型研究", 《上海理工大学学报》 * |
| 胡石林等: "3.8 PWR蒸汽发生器传热管与管支撑板的缝隙浓集研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835055A (en) * | 2016-06-04 | 2016-08-10 | 无锡市华鹰移动照明有限公司 | Extending-and-contracting mechanical arm for tunnel detection |
| CN105909038A (en) * | 2016-06-04 | 2016-08-31 | 无锡市华鹰移动照明有限公司 | Pneumatic-electric lifting mast |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102486436B (en) | 2014-01-01 |
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