CN204045222U - Nuclear power evaporator heat-transfer pipe endoporus failure detector - Google Patents
Nuclear power evaporator heat-transfer pipe endoporus failure detector Download PDFInfo
- Publication number
- CN204045222U CN204045222U CN201420239218.8U CN201420239218U CN204045222U CN 204045222 U CN204045222 U CN 204045222U CN 201420239218 U CN201420239218 U CN 201420239218U CN 204045222 U CN204045222 U CN 204045222U
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- China
- Prior art keywords
- concave station
- pedestal
- axis
- holes
- station face
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
A kind of nuclear power evaporator heat-transfer pipe endoporus failure detector, comprises pedestal and is arranged on the probe on pedestal; Described pedestal cylindrical sides has the first concave station face and the second concave station face, described two parallel concave station faces offer four through holes, be respectively two for installing the through hole one of described flaw detection point focusing probe and two for installing the through hole two of described line focus probe, probe transmitting terminal is positioned on the second concave station face; Wherein the axes intersect of two through holes one is in the first side, concave station face, 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 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 utility model nuclear power evaporator heat-transfer pipe endoporus failure detector tube wall is axial, circumference can both detect simultaneously, has stopped to occur omission, the undetectable problem of slight crack.
Description
Technical field
The utility model relates to a kind of nuclear power evaporator heat-transfer pipe endoporus failure detector.
Background technology
Nuclear power is as a kind of energy of efficient, clean and sustainable development in recent years, is again subject to great attention and the extensive concern of people.Environmentally present situation and sustainable development need, and nuclear energy has become current China and ensured one of important substitute energy of the energy safety of supply, adjustment electric structure most realistic meaning, is the important component part that China's modern energy industry is built.
Steam generator is the key equipment of the hinge of pressurized-water reactor nuclear power plant one, secondary circuit, primary Ioops system, and Main Function produces high-quality dry steam by the heat exchange effect of tube bank, drives Turbo-generator Set to generate electricity by main steam line.Go agent to flow through reactor core with radioactivity because primary Ioops is cold, therefore core vapour generator is also a part for primary Ioops pressure boundary, leaks for preventing radiomaterial.According to external report, about have 1/4th in the unplanned shutdown number of times of PWR nuclear power plant because relevant steam generator problem causes, therefore it is very important to the safe operation of nuclear power plant.Nuclear power evaporator heat-transfer pipe all selects U-tube, with inverted U-shaped formula dense arrangement, it plays dual parts isolation and heat transfer, namely in inside surface circulation is the primary Ioops working-medium water that the radioactive heat of band is higher, in outside surface circulation is extract the secondary circuit working-medium water that to be processedly must be used for producing steam from natural seawater or river warp, make it become steam to secondary circuit water the thermal energy conduction of primary Ioops water by it, its reliability directly has influence on security and the economy of nuclear power plant.Therefore heat-transfer pipe carrying out flaw detection is seemed particularly important, but heat-transfer pipe diameter of bore is less only has 12mm, therefore more difficult to its carrying out flaw detection, and if occur omit, slight crack detection less than, then can produce major accident in nuclear power evaporator use procedure.
Utility model content
The technical problems to be solved in the utility model is: overcome heat-transfer pipe flaw detection in prior art and occur omission, the undetectable deficiency of slight crack, provide a kind of nuclear power evaporator heat-transfer pipe endoporus failure detector.
The utility model is specific as follows for solving the problems of the technologies described above adopted technical scheme: a kind of nuclear power evaporator heat-transfer pipe endoporus failure detector, comprises pedestal and is arranged on the probe on pedestal; Described probe comprises two flaw detection point focusing probe and two line focus probes; Described pedestal is the right cylinder that a diameter is less than 12mm, wherein cylindrical sides has 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, formation two ends are right cylinder, centre has the structure in two parallel concave station faces, described two parallel concave station faces offer four through holes, be respectively two for installing the through hole one of described flaw detection point focusing probe and two for installing the through hole two of described line focus probe, described probe transmitting terminal is positioned on the second concave station face;
The axes intersect of two wherein said through holes one in the first side, concave station face, 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.
Heat-transfer pipe inside is positioned at during the flaw detection of the utility model nuclear power evaporator heat-transfer pipe endoporus failure detector, utilize the flaw detection point focusing probe that two relative tilts are arranged, its beam focal is in close to pipe outer wall place, detect heat transfer tube wall circumferential defect, this avoid and that can't detect problem parallel with slight crack due to wave beam, namely the slight crack that flaw detection point focusing probe can not detect heat-transfer pipe tube wall inner circumferential is avoided, and the line focus probe of two misalignment pedestal axis is set, wave beam line focus being popped one's head in send and the axial slight crack of tube wall are at an angle, thus detect heat-transfer pipe axial flaw, such tube wall axially, circumference can both detect simultaneously, stop to occur omitting, the undetectable problem of slight crack, improve accuracy rate and the work efficiency of flaw detection, make flaw detection more reliable.
Further, for enabling pedestal rotate smoothly in heat-transfer pipe and 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 column 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.Flaw detection point focusing probe and line focus are popped one's head in and heat-transfer pipe non-direct contact, have certain thickness moisture film between probe and heat-transfer pipe inwall, effectively can control water film thickness through controlling table top cup depth, improve probe flaw detection stability, accuracy.
Further, axis and the pedestal axis angle α of two described through holes one are 70 °, and the slight crack of flaw detection point focusing probe and heat-transfer pipe tube wall inner circumferential is had a certain degree, and make flaw detection more accurate.
The beneficial effects of the utility model are, heat-transfer pipe inside is positioned at during the flaw detection of the utility model nuclear power evaporator heat-transfer pipe endoporus failure detector, the flaw detection point focusing probe utilizing two relative tilts to arrange detects heat transfer tube wall circumferential defect, this avoid and that can't detect problem parallel with slight crack due to wave beam, namely the slight crack that flaw detection point focusing probe can not detect heat-transfer pipe tube wall inner circumferential is avoided, and the line focus probe arranging two misalignment pedestal axis detects heat-transfer pipe axial flaw, such tube wall axially, circumference can both detect simultaneously, stop to occur omitting, the undetectable problem of slight crack, improve accuracy rate and the work efficiency of flaw detection, make flaw detection more reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model nuclear power evaporator heat-transfer pipe endoporus failure detector front view;
Fig. 2 is the utility model nuclear power evaporator heat-transfer pipe endoporus failure detector vertical view;
Fig. 3 is the utility model failure detector schematic diagram in nuclear power evaporator heat-transfer pipe;
In figure: 1. pedestal, 2. through hole one, 3. through hole two, 4. the first concave station face, 5. the second concave station face, point focusing probe of 6. detecting a flaw, 7. line focus probe, 8. heat-transfer pipe, 9. water.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
As illustrated in fig. 1 and 2, a kind of nuclear power evaporator heat-transfer pipe endoporus failure detector, is characterized in that: the probe comprising pedestal 1 and be arranged on pedestal 1; Described probe comprises two flaw detection point focusing probe 6 and two line focus probes 7; Described pedestal 1 is the right cylinder that a diameter is less than 12mm, wherein cylindrical sides has the first concave station face 4 and the second concave station face 5, the first described concave station face 4 is parallel with the second concave station face 5, formation two ends are right cylinder, centre has the structure in two parallel concave station faces, described two parallel concave station faces offer four through holes, be respectively two for installing the through hole 1 of described flaw detection point focusing probe 6 and two for installing the through hole 23 of described line focus probe 7, described probe transmitting terminal is positioned on the second concave station face 5;
The axes intersect of two wherein said through holes 1 in the first side, concave station face 4, and the axis of two through holes 1 all with pedestal 1 axes intersect, the plane at two through hole 1 axis places is vertical with the first concave station face 4;
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 4.
As shown in Figure 3, heat-transfer pipe 8 is positioned at inner during the flaw detection of the utility model nuclear power evaporator heat-transfer pipe endoporus failure detector, utilize the flaw detection point focusing probe 6 that two relative tilts are arranged, its beam focal is in close to pipe outer wall place, detect heat-transfer pipe 8 wall circumferential defect, this avoid and that can't detect problem parallel with slight crack due to wave beam, namely the slight crack that flaw detection point focusing probe 6 can not detect heat-transfer pipe 8 tube wall inner circumferential is avoided, and the line focus probe 7 of two misalignment pedestal axis is set, the wave beams that line focus probe 7 is sent and the axial slight crack of tube wall are at an angle, thus detect heat-transfer pipe 8 axial flaw, such tube wall axially, circumference can both detect simultaneously, stop to occur omitting, the undetectable problem of slight crack, improve accuracy rate and the work efficiency of flaw detection, make flaw detection more reliable.
Further, for enabling pedestal rotate smoothly in heat-transfer pipe and move ahead, described pedestal 1 one end is connected with the tractor that traction pedestal 1 rotates and moves ahead in heat-transfer pipe 8.
Once enter, described pedestal 1 two terminal circle column diameter is 11.5mm, and wherein the first concave station face 4 cup depth d is 2mm, and the second concave station face 5 cup depth d1 is 4.5mm.Flaw detection point focusing probe 6 and line focus pop one's head in 7 with heat-transfer pipe 8 non-direct contact, between probe and heat-transfer pipe 8 inwall, there is certain thickness water 9 film, effectively can control water 9 film thickness through controlling table top cup depth, improve probe and to detect a flaw stability, accuracy
Further, axis and the pedestal 1 axis angle α of two described through holes 1 are 70 °, flaw detection point focusing probe 6 is had a certain degree with the slight crack of heat-transfer pipe 8 tube wall inner circumferential, makes flaw detection more accurate.
Claims (4)
1. a nuclear power evaporator heat-transfer pipe endoporus failure detector, is characterized in that: the probe comprising pedestal (1) and be arranged on pedestal (1), described probe comprises two flaw detections point focusing probe (6) and two line focuss probe (7), described pedestal (1) is the right cylinder that a diameter is less than 12mm, wherein cylindrical sides has the first concave station face (4) and the second concave station face (5), the first described concave station face (4) is parallel with the second concave station face (5), formation two ends are right cylinder, centre has the structure in two parallel concave station faces, described two parallel concave station faces offer four through holes, be respectively two for installing the through hole one (2) of described flaw detection point focusing probe (6) and two for installing the through hole two (3) of described line focus probe (7), described probe transmitting terminal is positioned on the second concave station face (5),
The axes intersect of wherein said two through holes one (2) is in the first concave station face (4) side, 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 (4);
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, the axis place plane of two through holes two (3) is vertical with the first concave station face (4).
2. nuclear power evaporator heat-transfer pipe endoporus failure detector according to claim 1, 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 (8).
3. nuclear power evaporator heat-transfer pipe endoporus failure detector according to claim 1, it is characterized in that: described pedestal (1) two terminal circle column diameter is 11.5mm, wherein the first concave station face (4) cup depth is 2mm, and the second concave station face (5) cup depth is 4.5mm.
4. nuclear power evaporator heat-transfer pipe endoporus failure detector according to claim 1, is characterized in that: axis and pedestal (1) axis angle of described two through holes one (2) are all 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239218.8U CN204045222U (en) | 2014-05-09 | 2014-05-09 | Nuclear power evaporator heat-transfer pipe endoporus failure detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239218.8U CN204045222U (en) | 2014-05-09 | 2014-05-09 | Nuclear power evaporator heat-transfer pipe endoporus failure detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204045222U true CN204045222U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239218.8U Withdrawn - After Issue CN204045222U (en) | 2014-05-09 | 2014-05-09 | Nuclear power evaporator heat-transfer pipe endoporus failure detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204045222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943155A (en) * | 2014-05-09 | 2014-07-23 | 常州市常超电子研究所有限公司 | Flaw detection device for inner hole of heat transfer pipe of nuclear-power evaporator |
-
2014
- 2014-05-09 CN CN201420239218.8U patent/CN204045222U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943155A (en) * | 2014-05-09 | 2014-07-23 | 常州市常超电子研究所有限公司 | Flaw detection device for inner hole of heat transfer pipe of nuclear-power evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141224 Effective date of abandoning: 20170215 |