CN103928067A - Nuclear evaporator heat transfer pipe inner hole crack detection device with convenient wire arrangement - Google Patents
Nuclear evaporator heat transfer pipe inner hole crack detection device with convenient wire arrangement Download PDFInfo
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- CN103928067A CN103928067A CN201410199276.7A CN201410199276A CN103928067A CN 103928067 A CN103928067 A CN 103928067A CN 201410199276 A CN201410199276 A CN 201410199276A CN 103928067 A CN103928067 A CN 103928067A
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- concave station
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- pedestal
- transfer pipe
- probe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
A nuclear evaporator heat transfer pipe inner hole crack detection device with convenient wire arrangement comprises a seat body and probes arranged on the seat body. The seat body is a cylinder, a first concave table board and a second concave table board are formed on the side face of the cylinder, the first concave table board is parallel to the second concave table board, the structure with cylindrical end faces at the two ends and the two parallel concave table boards in the middle is formed, five through holes are formed in the two parallel concave table boards and comprise two first through holes used for mounting crack detection point focusing probes, two second through holes used for mounting linear focusing probes and one third through hole used for mounting a thickness detecting point focusing probe, and a probe emission end is arranged on the second concave table board. The first concave table board face is provided with a wire arrangement hole communicated with the cylindrical end face at one end of the seat body. The nuclear evaporator heat transfer pipe inner hole crack detection device with convenient wire arrangement is located in a heat transfer pipe in the crack detection process, leading wires of the five probes are connected to the outside by penetrating through the wire arrangement hole, and therefore the interference of the leading wires to detection is avoided.
Description
Technical field
The present invention relates to a kind of winding displacement nuclear power evaporator heat-transfer pipe endoporus failure detector easily.
Background technology
Nuclear power, as a kind of energy of efficient, clean and sustainable development, is subject to people's great attention and extensive concern again in recent years.According to Environmental Status and sustainable development needs, nuclear energy has become current China and has ensured the energy safety of supply, adjusts one of important substitute energy of the tool realistic meaning of electric structure, is the important component part that China's modern energy industry is built.
Steam generator is the hinge of pressurized-water reactor nuclear power plant one, secondary circuit, the key equipment of a circuit system, and Main Function is that the heat exchange effect by restraining produces high-quality dry steam, by main steam line, drives Turbo-generator Set to generate electricity.Because a loop is cold, go agent to flow through reactor core with radioactivity, so core vapour generator is also the part on a circuit pressure border, for preventing that radiomaterial from leaking.According to external report, in the unplanned shutdown number of times of PWR nuclear power plant, approximately have 1st/4th, because of relevant steam generator problem, cause, so the safe operation of Ta Dui nuclear power plant is very important.Nuclear power evaporator is all selected U-shaped pipe with heat-transfer pipe, with inverted U-shaped formula dense arrangement, it plays dual parts isolation and conducts heat, what at inside surface, circulate is with the higher loop working-medium water of radioactive heat, in outside surface circulation is that extraction must to be processedly be used for producing the secondary circuit working-medium water of steam from natural seawater or river warp, by it by the thermal energy conduction of a Loop Water to secondary circuit water and make it become steam, its reliability directly has influence on security and the economy of nuclear power plant.Therefore for heat-transfer pipe carrying out flaw detection, seem particularly important, but heat-transfer pipe diameter of bore is less, only have 12mm, thus more difficult to its carrying out flaw detection.And the probe that carries out UT (Ultrasonic Testing) needs leaded picking out, and the probe of detecting a flaw often has much to improve detection accuracy, therefore, how lead-in wire arranged, and prevents that probe lead wire from having adverse effect to flaw detection, is not allow a problem ignoring.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the more difficult deficiency of heat-transfer pipe flaw detection in prior art, a kind of nuclear power evaporator heat-transfer pipe endoporus failure detector is provided.
Winding displacement is a nuclear power evaporator heat-transfer pipe endoporus failure detector easily, comprises pedestal and is arranged on the probe on pedestal, described probe comprises two flaw detection point focusing probe, two line focus probes and a thickness measuring point focusing probe, described pedestal is the right cylinder that a diameter is less than 12mm, wherein on right cylinder side, have the first concave station face and the second concave station face, the first described concave station face is parallel with the second concave station face, forming two ends is cylinder end face, centre has the structure of two parallel concave station faces, on two described parallel concave station faces, offer five through holes, be respectively two for the through hole one of described flaw detection point focusing probe is installed, two for installing the through hole two of described line focus probe and one for the through hole three of described thickness measuring point focusing probe is installed, described probe transmitting terminal is positioned on the second concave station face,
The axes intersect of wherein said two through holes one is in the first concave station face one side, and the axis of two through holes one all with pedestal axes intersect, the plane at two through hole one axis places is vertical with the first concave station face;
The axis of two described through holes two is positioned at the both sides of pedestal axis, and the axis of two through holes two is in same plane, and the axis place plane of two through holes two is vertical with the first concave station face;
The axis of described through hole three and through hole one axis are positioned at same plane, and through hole three axis are perpendicular to pedestal axis;
On the first described concave station face, there is the winding displacement hole that the cylinder end face with pedestal one end connects.
During winding displacement of the present invention nuclear power evaporator heat-transfer pipe endoporus failure detector flaw detection easily, be positioned at heat-transfer pipe inside, the lead-in wire of five probes is received to outside through winding displacement hole, avoided like this lead-in wire to the interference of surveying, utilize two flaw detection point focusing probe that are obliquely installed simultaneously, its wave beam focuses on and approaches pipe outer wall place, avoid wave beam parallel with slight crack, thereby detect heat transfer tube wall circumferential defect, utilize a thickness measuring point focusing probe to measure heat-transfer pipe wall thickness, in addition, utilize the line focus probe of two misalignment pedestal axis, its wave beam and axially slight crack are at an angle, thereby detect heat-transfer pipe axial flaw, tube wall is axial like this, circumferential and thickness can both detect simultaneously, accuracy rate and the work efficiency of probe have been improved, make probe more reliable.
Further, for making flaw detection probe rotate smoothly in heat-transfer pipe and to move ahead, described pedestal one end is connected with the tractor that traction pedestal rotates and moves ahead in heat-transfer pipe.
As preferably, described pedestal two terminal circle post end face diameter is 11.5mm, and wherein the first concave station face cup depth is 2mm, and the second concave station face cup depth is 4.5mm.Point focusing probe and line focus probe and heat-transfer pipe non-direct contact, have certain thickness moisture film between probe and heat-transfer pipe inwall, through controlling table top cup depth, can effectively control water film thickness, improves probe flaw detection stability, accuracy.
Further, the axis of two described through holes one and pedestal axis angle α are 70 °, and in make to detect a flaw point focusing probe and heat-transfer pipe tube wall, circumferential slight crack has a certain degree, and makes flaw detection more accurate.
The invention has the beneficial effects as follows, during winding displacement of the present invention nuclear power evaporator heat-transfer pipe endoporus failure detector flaw detection easily, be positioned at heat-transfer pipe inside, the lead-in wire of five probes is received to outside through winding displacement hole, avoided like this lead-in wire to the interference of surveying, utilize two flaw detection point focusing probe that are obliquely installed to detect heat transfer tube wall circumferential defect simultaneously, utilize a thickness measuring point focusing probe to measure heat-transfer pipe wall thickness, in addition, utilize line focus probe to detect heat-transfer pipe axial flaw, tube wall is axial like this, circumferential and thickness can both detect simultaneously, accuracy rate and the work efficiency of probe have been improved, make probe more reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is nuclear power evaporator heat-transfer pipe endoporus failure detector front view of the present invention;
Fig. 2 is nuclear power evaporator heat-transfer pipe endoporus failure detector vertical view of the present invention;
Fig. 3 is failure detector of the present invention schematic diagram in nuclear power evaporator heat-transfer pipe;
In figure: 1. pedestal, 2. through hole one, and 3. through hole two, and 4. through hole three, 5. the first concave station face, 6. the second concave station face, 7. flaw detection point focusing probe, 8. line focus probe, 9. thickness measuring point focusing probe, 10. cylinder end face, 11. winding displacement holes, 12. heat-transfer pipes, 13. water.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
Embodiment 1
As illustrated in fig. 1 and 2, a kind of winding displacement is nuclear power evaporator heat-transfer pipe endoporus failure detector easily, comprises pedestal 1 and is arranged on the probe on pedestal 1, described probe comprises two flaw detection point focusing probe 7,8 and thickness measuring point focusing probe 9 of two line focus probes, described pedestal 1 is the right cylinder that a diameter is less than 12mm, wherein on right cylinder side, have the first concave station face 5 and the second concave station face 6, the first described concave station face 5 is parallel with the second concave station face 6, forming two ends is cylinder end face 10, centre has the structure of two parallel concave station faces, on two described parallel concave station faces, offer five through holes, be respectively two for the through hole 1 of described flaw detection point focusing probe 7 is installed, two for installing the through hole 23 of described line focus probe 8 and one for the through hole three of described thickness measuring point focusing probe 9 is installed, described probe transmitting terminal is positioned on the second concave station face 6,
The axes intersect of wherein said two through holes 1 is in the first concave station face 5 one sides, and the axis of two through holes 1 all with pedestal 1 axes intersect, the plane at two through hole one 2 axis places is vertical with the first concave station face 5;
The axis of two described through holes 23 is positioned at the both sides of pedestal 1 axis, and the axis of two through holes 23 is in same plane, and the axis place plane of two through holes 23 is vertical with the first concave station face 5;
The axis of described through hole three and through hole one 2 axis are positioned at same plane, and through hole three axis are perpendicular to pedestal 1 axis;
On the first described concave station face 5, there is the winding displacement hole 11 that the cylinder end face 10 with pedestal 1 one end connects.
During winding displacement of the present invention nuclear power evaporator heat-transfer pipe endoporus failure detector flaw detection easily, be positioned at heat-transfer pipe inside, the lead-in wire of five probes is received to outside through winding displacement hole, avoided like this lead-in wire to the interference of surveying, utilize two flaw detection point focusing probe that are obliquely installed simultaneously, its wave beam focuses on and approaches pipe outer wall place, avoid wave beam parallel with slight crack, thereby detect heat transfer tube wall circumferential defect, utilize a thickness measuring point focusing probe to measure heat-transfer pipe wall thickness, in addition, utilize the line focus probe of two misalignment pedestal axis, its wave beam and axially slight crack are at an angle, thereby detect heat-transfer pipe axial flaw, tube wall is axial like this, circumferential and thickness can both detect simultaneously, accuracy rate and the work efficiency of probe have been improved, make probe more reliable.
As shown in Figure 3, during winding displacement of the present invention nuclear power evaporator heat-transfer pipe endoporus failure detector flaw detection easily, be positioned at heat-transfer pipe 12 inside, the lead-in wire of five probes is received to outside through winding displacement hole 11, avoided like this lead-in wire to the interference of surveying, utilize two flaw detection point focusing probe 7 that are obliquely installed simultaneously, its wave beam focuses on and approaches pipe outer wall place, thereby detect heat transfer tube wall circumferential defect, utilize a thickness measuring point focusing probe 9 to measure heat-transfer pipe wall thickness, in addition, utilize the line focus probe 8 of two misalignment pedestal axis, its wave beam and axially slight crack are at an angle, thereby detect heat-transfer pipe 12 axial flaws, tube wall is axial like this, circumferential and thickness can both detect simultaneously, accuracy rate and the work efficiency of probe have been improved, make probe more reliable.
Further, described pedestal 1 one end is connected with traction pedestal 1 at the interior rotation of heat-transfer pipe 12 and the tractor that moves ahead.
As shown in Figure 3, flaw detection point focusing probe 7 and line focus probe 8 and thickness measuring point focusing probe 9 and heat-transfer pipe 12 non-direct contacts, between probe and heat-transfer pipe 12 inwalls, there are certain thickness water 13 films, through controlling table top cup depth, can effectively control water 13 film thicknesses, improve probe flaw detection stability, accuracy, therefore, further size design is as follows, described pedestal 1 two terminal circle styletable face 10 diameters are 11.5mm, wherein the first concave station face 5 cup depth d are 2mm, and the second concave station face 6 cup depth d1 are 4.5mm.
Further, the axis of two described through holes 1 and pedestal 1 axis angle are all 70 °, and the point focusing probe 7 that makes to detect a flaw has a certain degree with the interior circumferential slight crack of heat-transfer pipe 12 tube walls, makes flaw detection more accurate.
Claims (4)
1. a winding displacement nuclear power evaporator heat-transfer pipe endoporus failure detector easily, is characterized in that: comprise pedestal (1) and be arranged on the probe on pedestal (1), described probe comprises two flaw detection point focusing probe (7), two line focus probes (8) and thickness measuring point focusing probe (9), described pedestal (1) is the right cylinder that a diameter is less than 12mm, wherein on right cylinder side, have the first concave station face (5) and the second concave station face (6), the first described concave station face (5) is parallel with the second concave station face (6), forming two ends is cylinder end face (10), centre has the structure of two parallel concave station faces, on two described parallel concave station faces, offer five through holes, be respectively two for the through hole one (2) of described flaw detection point focusing probe (7) is installed, two for two (3) and one of through holes that described line focus probe (8) is installed for the through hole three of described thickness measuring point focusing probe (9) is installed, described probe transmitting terminal is positioned on the second concave station face (6),
The axes intersect of wherein said two through holes one (2) is in the first concave station face (5) one sides, and the axis of two through holes one (2) all with pedestal (1) axes intersect, the plane at two through hole one (2) axis places is vertical with the first concave station face (5);
The axis of described two through holes two (3) is positioned at the both sides of pedestal (1) axis, and the axis of two through holes two (3) is in same plane, and the axis place plane of two through holes two (3) is vertical with the first concave station face (5);
The axis of described through hole three and through hole one (2) axis are positioned at same plane, and through hole three axis are perpendicular to pedestal (1) axis;
On the first described concave station face (5), there is the winding displacement hole (11) that the cylinder end face (10) with pedestal (1) one end connects.
2. winding displacement according to claim 1 nuclear power evaporator heat-transfer pipe endoporus failure detector easily, is characterized in that: described pedestal (1) one end is connected with the tractor that traction pedestal (1) rotates and moves ahead in heat-transfer pipe.
3. winding displacement according to claim 1 nuclear power evaporator heat-transfer pipe endoporus failure detector easily, it is characterized in that: described pedestal (1) two terminal circle styletable face (10) diameter is 11.5mm, wherein the first concave station face (5) cup depth is 2mm, and the second concave station face (6) cup depth is 4.5mm.
4. winding displacement according to claim 1 has the nuclear power evaporator heat-transfer pipe endoporus failure detector of thickness measuring function easily, it is characterized in that: the axis of described two through holes one (2) and pedestal (1) axis angle are all 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199276.7A CN103928067B (en) | 2014-05-09 | 2014-05-09 | Winding displacement is nuclear power evaporator heat-transfer pipe endoporus failure detector easily |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410199276.7A CN103928067B (en) | 2014-05-09 | 2014-05-09 | Winding displacement is nuclear power evaporator heat-transfer pipe endoporus failure detector easily |
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| CN103928067A true CN103928067A (en) | 2014-07-16 |
| CN103928067B CN103928067B (en) | 2016-04-06 |
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| CN201410199276.7A Active CN103928067B (en) | 2014-05-09 | 2014-05-09 | Winding displacement is nuclear power evaporator heat-transfer pipe endoporus failure detector easily |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105929021A (en) * | 2016-06-21 | 2016-09-07 | 上海电气核电设备有限公司 | Small connecting pipe inner wall magnetic powder detecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105929021A (en) * | 2016-06-21 | 2016-09-07 | 上海电气核电设备有限公司 | Small connecting pipe inner wall magnetic powder detecting device |
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| Publication number | Publication date |
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| CN103928067B (en) | 2016-04-06 |
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Inventor after: Wang Zhengqing Inventor after: Zhou Nanqi Inventor before: Zhou Nanqi |
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