CN208109753U - Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex - Google Patents
Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex Download PDFInfo
- Publication number
- CN208109753U CN208109753U CN201721864412.5U CN201721864412U CN208109753U CN 208109753 U CN208109753 U CN 208109753U CN 201721864412 U CN201721864412 U CN 201721864412U CN 208109753 U CN208109753 U CN 208109753U
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- China
- Prior art keywords
- transfer pipe
- probe
- steam generator
- screw rod
- probe door
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- Withdrawn - After Issue
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- 239000000523 sample Substances 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model nuclear power station technical field of nondestructive testing, particularly for the probe door stretching structure of horizontal steam generator heat-transfer pipe vortex detection, including fixing seat support base, direct current generator, calibrating tube, the screw rod of direct current generator driving, the sliding block that connect with wire rod thread and what is be fixedly connected with a slide block be set to the door of popping one's head in that stretches, flexible probe door pocket is outside calibrating tube, screw rod one end is installed by fixing seat and is connect with direct current generator, and the other end is mounted on the support base of fixed installation by rolling bearing.The rotation of screw rod, the i.e. movement of control probe door are driven by motor, adjusts it at a distance from tube sheet, and convenient for easily observing the accurate picture of probe positioning, and whether probe enters or leave the situation of heat-transfer pipe, reduces the risk of collision base support member.
Description
Technical field
The utility model belongs to nuclear power station technical field of nondestructive testing, and in particular to a kind of horizontal steam generator heat-transfer pipe
Eddy current probe structure.
Background technique
Nuclear power station 1, No. 2 unit in field gulf is the VVER-1000M type nuclear power station that China is introduced from Russia for the first time, belongs to Russia
The third generation innovative product of Ross, all in investment commercial operation in 2007.Nuclear power station 3, No. 4 units in field gulf are similarly VVER-
1000M type started to build in 2012, will all investment commercial operations in 2018.
Steam generator heat-transfer pipe is the pressure boundary of nuclear reactor coolant system, and area accounts for primary Ioops pressure boundary
70% or more.Since heat-transfer pipe is the thin-wall tube of 1mm or so, and operating condition is also very severe, so heat-transfer pipe one
It is directly primary Ioops pressure boundary link the weakest.International nuclear power operating statistic data show there are about 50% or more with
The different degrees of breakage of heat-transfer pipe occurs for steam generator.Domestic and international each nuclear power station is implemented to use as a servant to steam generator heat-transfer pipe
Preceding and inservice inspection.
The steam generator for horizontal double collecting pipe structures that the steam generator of VVER-1000M unit uses, heat-transfer pipe are adopted
With horizontally disposed, referred to as horizontal steam generator.Its unique structure type determines that its detection device and vertical steam occur
Device there are greatest differences, horizontal steam generator detection device need to first pass through diameter phi 500mm manhole, enter back into internal diameter φ
The interior progress EDDY CURRENT of steam generator header of 834mm, high 5m.
In the EDDY CURRENT of horizontal steam generator heat-transfer pipe, structure of the detecting device is in steam generator detection system
One of key technology, it is not only related to check the quality and efficiency of work, by irradiation dose level, also affects inspection
The contents such as the formulation of plan, the arrangement of inspection personnel.
Currently, foreign countries have SIEMENS company, INETEC company and HRID company to produce horizontal steam generator heat-transfer pipe
Eddy current detecting equipment；At home, China Nuclear Power Operation Technology Co., Ltd. produces horizontal steam generator biography
The eddy current detecting equipment of heat pipe.In such devices, the probe door of detection device all uses pneumatic control mode, straight entering
When diameter φ 500mm manhole, probe door is plumbness, passes through manhole convenient for associated components；When the afflux for entering internal diameter φ 834mm
Guan Hou, probe door become horizontality in the presence of cylinder, the fixation and recognition to heat-transfer pipe may be implemented, and can be logical by probe
It crosses probe door and is sent into heat-transfer pipe.
In actual application, pop one's head in door structure to check work belt come some unfavorable factors：
Probe door and to contact at a distance from band (tube sheet) be fixed (usually 20mm), it is inconvenient to observe because distance is too small
Whether probe moves in heat-transfer pipe；
The structure of probe door occupies biggish space, when leading to minimum row's heat-transfer pipe in checking header, exists and touches
Hit the risk of base support member；
It is not easy to the processing to abnormality, such as when there is card probe, taking out to probe has larger difficulty.
Summary of the invention
The purpose of the utility model is to provide a kind of probe doors for the detection of horizontal steam generator heat-transfer pipe vortex to stretch
Shrinking structure, reliability are higher.
The technical solution of the utility model is as follows：
For the probe door stretching structure of horizontal steam generator heat-transfer pipe vortex detection, including fixing seat support base and straight
Galvanic electricity machine further includes that the calibrating tube being fixed in fixing seat, the screw rod driven by the direct current generator and wire rod thread connect
The sliding block connect and what is be fixedly connected with the sliding block be set to flexible probe door, the flexible probe door pocket is in calibrating tube
Outside, described screw rod one end is installed by fixing seat and is connect with direct current generator, and the other end is mounted on fixation by rolling bearing
On the support base of installation.
Support rod is fixed between the support base and fixing seat, the support rod is located at below screw rod.
The fixing seat is equipped with mounting hole, is equipped with connector sleeve in hole, the connector sleeve is sleeved on screw rod, screw rod
It is connect across connector sleeve with direct current generator.
The flexible probe is held in front of the door is fixed with guide head.
The guide head is tapered structure, and outside diameter is identical as flexible probe door diameter, and small end is outwardly.
Front and back end of the sliding block on the mobile stroke of lead screw is respectively equipped with position limiting structure.
The position limiting structure be include the limit switch being individually fixed in fixing seat and support base.
The beneficial effects of the utility model are as follows：It is driven using direct feeding system, when dc motor input dc power
When pressure, motor drives the rotation of screw rod, the i.e. movement of control probe door.
The movement for adjusting probe door, can adjust it at a distance from tube sheet, convenient for easily observing the accurate of probe positioning
Whether situation, and probe enter or leave the situation of heat-transfer pipe；
Probe door telescoping mechanism makes full use of the space in horizontal direction, reduces the crowded of space in the vertical direction, with
And may cause check header in low row's heat-transfer pipe when, it is existing collision base support member risk；
When there is card probe, by controlling probe door and contacting at a distance from band (tube sheet), expose probe more
Come, so that stock specific purpose tool implements the taking-up work to probe；
The contraction of control probe door reduces probe door and blocks to camera, examines convenient for the video of connection band (tube sheet)
It surveys.
Detailed description of the invention
Fig. 1 is status diagram when popping one's head in the contraction of door stretching structure；
In figure：1. fixing seat；2. flexible probe door；3. calibrating tube；4. guide head；5. direct current generator；6. connector sleeve；7. receiving
Shrinkage limit bit switch；8. sliding block；9. screw rod；10. support rod；11. stretching limit switch；12. rolling bearing；13. support base.
Specific embodiment
Below by the drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, probe door stretching structure includes fixing seat 1, the direct current generator 5 being fixedly mounted, the drive of right direct current generator 5
Dynamic screw rod 9, the flexible probe door 2 being fixedly connected with sliding block 8, is fixedly mounted on fixing seat 1 at the sliding block 8 being sleeved on screw rod 9
On calibrating tube 3.
Flexible probe door 2 is sleeved on outside calibrating tube 3, and guide head 4 is installed in front end, convenient for probe installation.
Support rod 10 is fixedly mounted in above-mentioned 1 bottom of fixing seat, and support base 13 is fixedly mounted in the outer end of support rod 10.On
9 one end of screw rod stated passes through fixing seat 1 and connects direct current generator 5, and the other end is mounted on support base 13 by rolling bearing 12.
Processing mounting holes in above-mentioned fixing seat 1 install connector sleeve 6 in hole, and above-mentioned screw rod 9 passes through connector sleeve 6 and direct current generator 5 connects
It connects.
When motor 5 drives screw rod 5 to rotate, sliding block 8 moves on lead screw 5, drives the flexible spy being fixedly connected with sliding block 8
Head door 2 moves together, and since calibrating tube 3 is fixedly mounted in fixing seat 1, flexible probe 2 relative Calibration pipe 3 of door is made relatively
Movement.That is the rotation of direct current generator 5 causes the movement of flexible probe door 2, and 2 relative Calibration pipe 3 of door of popping one's head in flexible in this way can be into
Row stretching motion.
Calibrating tube 3 is used for EDDY CURRENT, and the probe door 2 that stretches becomes probe door to the direction except fixed seat 1 is mobile
Direction of extension movement instead then becomes shrinkage direction and moves.
In order to it is flexible probe door 2 stretching, extension and shrinkage direction sports limiting, shrink limit switch 7 be fixedly mounted on fixation
On seat 1, stretching, extension limit switch 11 is fixedly mounted on support base 12, and two switches are installed in 12 phase of fixing seat 1 and support base
Pair mounting surface on.
Direct current generator voltage rating in the present apparatus is 24V, flexible, the i.e. positive and negative rotation of dc motor for door of popping one's head in
It is to be realized by changing the input voltage polarity of dc motor.Assuming that motor is just when motor input voltage is+24V
Turn, probe door is moved to direction of extension；When then motor input voltage is -24V, motor reversal, probe door is transported to shrinkage direction
It is dynamic.
When door of popping one's head in moves to a certain limit-switch positions, limit switch disconnects (limit switch connects normally-closed contact), prohibits
Only by dedicated electric control circuit forbid motor in one direction continue to move, can only move in the reverse direction, this
Sample plays the role of sports limiting.
Claims (7)
1. for the probe door stretching structure of horizontal steam generator heat-transfer pipe vortex detection, including fixing seat (1) support base
(13) and direct current generator (5), it is characterised in that：It further include the calibrating tube (3) being fixed on fixing seat (1), by described straight
The screw rod (9) of galvanic electricity machine (5) driving, with the sliding block (8) of screw rod (9) threaded connection and be fixedly connected with the sliding block (8)
Flexible probe door (2), the flexible probe door (2) are sleeved on calibrating tube (3) outside, and the screw rod (9) one end passes through fixation
Seat (1) is installed and is connect with direct current generator (5), and the other end is mounted on the support base (13) of fixed installation by rolling bearing (12)
On.
2. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as described in claim 1, special
Sign is：It is fixed with support rod (10) between the support base (13) and fixing seat (1), the support rod (10) is located at
Below screw rod (9).
3. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as described in claim 1, special
Sign is：The fixing seat (1) is equipped with mounting hole, is equipped with connector sleeve (6) in hole, the connector sleeve (6) is sleeved on silk
On bar (9), screw rod (9) passes through connector sleeve (6) and connect with direct current generator (5).
4. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as described in claim 1, special
Sign is：Flexible probe door (2) front end is fixed with guide head (4).
5. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as claimed in claim 4, special
Sign is：The guide head (4) is tapered structure, and outside diameter is identical as flexible probe door (2) diameter, and small end is outwardly.
6. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as described in claim 1, special
Sign is：Front and back end of the sliding block (8) on screw rod (9) mobile stroke is respectively equipped with position limiting structure.
7. the probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex as claimed in claim 6, special
Sign is：The position limiting structure be include the limit switch being individually fixed in fixing seat (1) and support base (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721864412.5U CN208109753U (en) | 2017-12-27 | 2017-12-27 | Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721864412.5U CN208109753U (en) | 2017-12-27 | 2017-12-27 | Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208109753U true CN208109753U (en) | 2018-11-16 |
Family
ID=64130228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721864412.5U Withdrawn - After Issue CN208109753U (en) | 2017-12-27 | 2017-12-27 | Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208109753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595447A (en) * | 2018-12-21 | 2019-04-09 | 核动力运行研究所 | A kind of horizontal steam generator heat-transfer pipe vortex detection device lifting device |
| CN109975394A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex |
-
2017
- 2017-12-27 CN CN201721864412.5U patent/CN208109753U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975394A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | Probe door stretching structure for the detection of horizontal steam generator heat-transfer pipe vortex |
| CN109975394B (en) * | 2017-12-27 | 2024-07-19 | 核动力运行研究所 | Probe door telescopic structure for vortex detection of horizontal steam generator heat transfer tube |
| CN109595447A (en) * | 2018-12-21 | 2019-04-09 | 核动力运行研究所 | A kind of horizontal steam generator heat-transfer pipe vortex detection device lifting device |
| CN109595447B (en) * | 2018-12-21 | 2024-03-22 | 核动力运行研究所 | Lifting tool of vortex flow detection device for heat transfer tube of horizontal steam generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181116 Effective date of abandoning: 20240719 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181116 Effective date of abandoning: 20240719 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |