CN111350890A - Device and method for hydraulic blasting detection of annular fuel assembly guide pipe - Google Patents
Device and method for hydraulic blasting detection of annular fuel assembly guide pipe Download PDFInfo
- Publication number
- CN111350890A CN111350890A CN201811559892.3A CN201811559892A CN111350890A CN 111350890 A CN111350890 A CN 111350890A CN 201811559892 A CN201811559892 A CN 201811559892A CN 111350890 A CN111350890 A CN 111350890A
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- Prior art keywords
- joint
- compression
- compression nut
- guide pipe
- conical surface
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0225—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
Abstract
The invention relates to a device and a method for hydraulic blasting detection of an annular fuel assembly guide pipe, wherein the device comprises a joint, a hoop and a compression nut; the method comprises the following steps: connecting a joint to a joint of a bursting tester and screwing the joint, and placing a copper gasket in the middle; secondly, enabling the open end of the sample to penetrate through the opening end of the compression nut, then penetrating through the clamp from the thin end, and performing flaring treatment on the open end of the sample guide pipe by using a flaring device, wherein the height is 3-5 mm; and thirdly, pressing the flaring part of the guide pipe close to the conical surface of the joint, and connecting and fastening the compression nut and the joint. The invention has the advantages that: 1) the conical surface of the joint is matched with the conical surface of the hoop, and the flared pipe is tightly connected with the joint and the hoop during the pressing of the compression nut, so that the sealing is good; 2) the clamp can be repeatedly used after being taken down, and the detection cost is low; 3) the process is simple and easy to operate.
Description
Technical Field
The invention belongs to the technical field of guide pipe hydraulic blasting detection, and particularly relates to a device and a method for hydraulic blasting detection of a guide pipe of an annular fuel assembly.
Background
The hydraulic test equipment uses gas as a power source, a pneumatic pump as a pressure source, and the pressure of output liquid is proportional to the pressure of driving gas. The corresponding output liquid pressure can be obtained by adjusting the driving air pressure. When the driving air pressure is balanced with the output liquid pressure, the air pump stops pressurizing, and the output liquid pressure is stabilized on the pre-pressurizing pressure. By controlling the air intake, the liquid flow can be controlled, thereby controlling the pressure rise speed. The ultimate pressure at which the sample ruptures is tested at the end of the test until the sample ruptures.
The detection flow of the hydraulic blasting test comprises the following steps:
1) the cladding tube was cut into approximately 200mm long samples with a lathe and a sealed end plug was welded at one end.
2) And (4) connecting the pipe with the blasting equipment in a sealing way.
3) And (4) carrying out a blasting test, unloading the sample after the sample is blasted, and reserving the sample for measurement.
The explosion test is a destructive test of ultimate explosion pressure on the annular fuel element guide pipe, the test pressure can reach dozens of megapascals, the sealed connection of the pipe and equipment is realized, and the test cost is considered, which is also the difficulty of the invention.
Disclosure of Invention
The invention aims to: the invention aims to design and manufacture a special hydraulic blasting detection tool for an annular fuel assembly guide pipe. Therefore, the establishment of the hydraulic blasting detection method of the annular fuel assembly guide pipe is realized.
The technical scheme of the invention is as follows: a hydraulic blasting detection device for an annular fuel assembly guide pipe comprises a joint, a hoop and a compression nut;
the middle of the joint is provided with a central hole A with the diameter of 4-8mm in the axial direction and used for the passage of blasting media; the lower end of the joint is provided with an external thread which is matched with the interface thread of the hydraulic blasting testing machine; the upper part of the external thread is provided with a clamping nut which is used for clamping when the joint and the equipment and the joint and the compression nut are connected and installed; the upper end of the joint is a smooth conical surface which is connected with the guide pipe and realizes sealing, and a pressing thread is arranged below the smooth conical surface and used for installing and pressing the nut;
the whole structure of the hoop is cylindrical with the step outside, and the inside is a central hole B for passing through a guide pipe; the bottom of the clamp is a pressing part, and the diameter of the pressing part is larger than the inner diameter of a pressing end hole of the pressing nut and is used for pressing; the upper part of the clamp is a positioning part, and the end hole is compressed through a compression nut and is used for connecting and positioning; the bottom inside the hoop is provided with a circle of conical surface structure which is matched with the conical surface of the joint and used for compressing the flaring part of the sample guide tube and realizing the sealing connection of the guide tube and the blasting test equipment;
the inner part of the compression nut is provided with internal threads for connecting with the joint, and the outer part of the compression nut is provided with an outer hexagonal nut structure for clamping when the compression nut is connected and installed; the upper end of the compression nut is an open part for flaring the guide pipe; the lowest end is provided with an opening for the passing of the positioning part of the hoop and the pressing part of the hoop to be pressed.
Furthermore, the overall length of the joint is 50-54mm, the maximum transverse dimension is 40mm, and the external threads are M13 × 1.35.35 and 12-13mm in length.
Furthermore, the length of the clamping nut is 9-10mm, and the transverse maximum size is 40 mm; the included angle of the smooth conical surface is 60 degrees, the diameter of the small conical surface at the top is phi 11-12mm, and the diameter of the conical bottom is phi 28 mm.
Furthermore, the size of the pressing thread is M30 × 1.5.5, the length of the pressing thread is 9-10mm, and the height of the clamping hoop is 18-22 mm.
Further, the diameter of the central hole B is 16.8-17.2 mm; the outer diameter of the compression part is 29-30mm, and the height of the compression part is 7-8 mm.
Furthermore, the outer diameter of the positioning part is 25-26mm, and the height is 11-12 mm; the conical surface structure has a conical surface included angle of 60 degrees and a height of 2 mm.
Furthermore, the height of the compression nut is 33-34mm, and the size of the internal thread is M30 × 1.5.5.
Furthermore, the maximum transverse size of the outer hexagonal nut structure is 42 mm; the transverse maximum diameter of the open part is phi 30mm, and the height of the open part is 1 mm; the diameter of the opening is phi 26.5mm, and the height of the opening is 2-3 mm; the joint, the hoop and the compression nut are all made of 304 stainless steel.
Further, the blasting medium is water.
The invention discloses a hydraulic blasting detection method for an annular fuel assembly guide pipe, which uses the device of the invention and comprises the following steps:
connecting a joint to a joint of a bursting tester and screwing the joint, and placing a copper gasket in the middle;
secondly, enabling the open end of the sample to penetrate through the opening end of the compression nut, then penetrating through the clamp from the thin end, and performing flaring treatment on the open end of the sample guide pipe by using a flaring device, wherein the height is 3-5 mm;
thirdly, pressing the flaring part of the guide pipe close to the conical surface of the joint, connecting the compression nut with the joint and fastening;
starting a blasting tester, and finishing a blasting test according to a set program;
and step five, after the test is finished, unscrewing and taking down the compression nut on the guide pipe, sawing off the pipe by adhering to the thin end of the hoop, and finally taking down the hoop and the compression nut.
The invention has the following remarkable effects: by the invention, the following effects are achieved in the hydraulic blasting detection project of the annular fuel assembly guide pipe:
1) the conical surface of the joint is matched with the conical surface of the hoop, and the flared pipe is tightly connected with the joint and the hoop during the pressing of the compression nut, so that the sealing is good;
2) the clamp can be repeatedly used after being taken down, and the detection cost is low;
3) the process is simple and easy to operate.
Drawings
FIG. 1 is a schematic structural diagram of a sample of a pilot tube burst of an annular fuel assembly;
FIG. 2 is a cross-sectional view of the joint;
FIG. 3 is a top view of the joint;
FIG. 4 is a schematic view of the structure of the clamp;
FIG. 5 is a cross-sectional view of the compression nut;
FIG. 6 is a top view of the compression nut;
FIG. 7 is an assembly view of an apparatus for hydraulic burst testing of a ring fuel assembly guide tube according to the present invention;
in the figure: 1. the structure comprises a center hole A, an external thread 2, a clamping nut 3, a smooth conical surface 4, a compression thread 5, a center hole B6, a compression part 7, a positioning part 8, a conical surface structure 9, an internal thread 10, an external hexagonal nut structure 11, an opening part 12 and an opening hole 13.
Detailed Description
The following describes in detail a device and a method for hydraulic burst detection of a ring fuel assembly guide tube according to the present invention with reference to the accompanying drawings and embodiments.
As shown in fig. 1-7, the device for hydraulic burst detection of the annular fuel assembly guide pipe comprises a joint, a clamp and a compression nut;
the middle of the joint is provided with a central hole A1 with the diameter of 4-8mm in the axial direction and is used for the passage of blasting media; the lower end of the joint is provided with an external thread 2 which is used for being matched with the interface thread of the hydraulic blasting testing machine; the upper part of the external thread 2 is provided with a clamping nut 3 which is used for clamping when the joint and the equipment and the joint and the compression nut are connected and installed; the upper end of the joint is a smooth conical surface 4 which is connected with the guide pipe and realizes sealing, and a compression thread 5 is arranged below the smooth conical surface 4 and used for installing and compressing the nut;
the whole structure of the hoop is in a cylindrical shape with a step outside, and the inside of the hoop is provided with a central hole B6 for a guide pipe to pass through; the bottom of the clamp is a compression part 7, the diameter of the compression part is larger than the inner diameter of a compression end hole of the compression nut, and the compression part is used for compression; the upper part of the clamp is provided with a positioning part 8, and the end hole is tightly pressed through a compression nut for connecting and positioning; a circle of conical surface structure 9 is arranged at the bottom inside the hoop, is matched with the conical surface of the joint and is used for compressing the flaring part of the sample guide pipe and realizing the sealing connection of the guide pipe and the blasting test equipment;
the interior of the compression nut is provided with internal threads 10 for connecting with a joint, and the exterior of the compression nut is provided with an outer hexagonal nut structure 11 for clamping when the compression nut is connected and installed; the upper end of the compression nut is provided with an open part 12 for flaring the guide pipe; the lowest end is provided with an opening 13 for the positioning part 8 of the hoop to pass through and pressing the pressing part 7 of the hoop.
Furthermore, the overall length of the joint is 50-54mm, the maximum transverse dimension is 40mm, and the thread length of the external thread 2 is 12-13mm, wherein the thread length is M13 × 1.35.35.
Furthermore, the length of the clamping nut 3 is 9-10mm, and the transverse maximum size is 40 mm; the included angle of the smooth conical surface 4 is 60 degrees, the diameter of the small conical surface at the top is phi 11-12mm, and the diameter of the cone bottom is phi 28 mm.
Furthermore, the size of the pressing thread 5 is M30 × 1.5.5, the length of the pressing thread is 9-10mm, and the height of the hoop is 18-22 mm.
Further, the diameter of the central hole B6 is 16.8-17.2 mm; the compression part 7 has an outer diameter of 29-30mm and a height of 7-8 mm.
Furthermore, the positioning part 8 has an outer diameter of 25-26mm and a height of 11-12 mm; the conical surface structure 9 has a conical surface included angle of 60 degrees and a height of 2 mm.
Furthermore, the height of the compression nut is 33-34mm, and the size of the internal thread 10 is M30 × 1.5.5.
Further, the maximum transverse dimension of the outer hexagonal nut structure 13 is 42 mm; the transverse maximum diameter of the open part 12 is phi 30mm, and the height is 1 mm; the diameter of the opening 13 is phi 26.5mm, and the height of the opening is 2-3 mm; the joint, the hoop and the compression nut are all made of 304 stainless steel.
Further, the blasting medium is water.
The invention discloses a hydraulic blasting detection method for an annular fuel assembly guide pipe, which uses the device of the invention and comprises the following steps:
connecting a joint to a joint of a bursting tester and screwing the joint, and placing a copper gasket in the middle;
secondly, enabling the open end of the sample to penetrate through the opening end of the compression nut, then penetrating through the clamp from the thin end, and performing flaring treatment on the open end of the sample guide pipe by using a flaring device, wherein the height is 3-5 mm;
thirdly, pressing the flaring part of the guide pipe close to the conical surface of the joint, connecting the compression nut with the joint and fastening;
starting a blasting tester, and finishing a blasting test according to a set program;
and step five, after the test is finished, unscrewing and taking down the compression nut on the guide pipe, sawing off the pipe by adhering to the thin end of the hoop, and finally taking down the hoop and the compression nut.
Claims (10)
1. The utility model provides a device that annular fuel assembly stand pipe hydraulic pressure explodes and detects which characterized in that: comprises a joint, a clamp and a compression nut;
the middle of the joint is provided with a central hole A (1) with the diameter of 4-8mm in the axial direction and used for the passage of blasting media; the lower end of the joint is provided with an external thread (2) which is matched with the interface thread of the hydraulic bursting tester; the upper part of the external thread (2) is provided with a clamping nut (3) which is used for clamping when the joint and the equipment and the joint and the compression nut are connected and installed; the upper end of the joint is a smooth conical surface (4) which is connected with the guide pipe and realizes sealing, and a pressing thread (5) is arranged below the smooth conical surface (4) and is used for installing and pressing a nut;
the whole structure of the hoop is cylindrical with steps on the outside, and the inside is a central hole B (6) for passing through a guide pipe; the bottom of the clamp is a compression part (7), the diameter of the compression part is larger than the inner diameter of a compression end hole of the compression nut, and the compression part is used for compressing; the upper part of the hoop is a positioning part (8) which is used for connecting and positioning by compressing the end hole through a compression nut; the bottom inside the hoop is provided with a circle of conical surface structure (9) which is matched with the conical surface of the joint and used for compressing the flaring part of the sample guide tube and realizing the sealing connection of the guide tube and the blasting test equipment;
the interior of the compression nut is provided with internal threads (10) for connecting with a joint, and the exterior of the compression nut is provided with an outer hexagonal nut structure (11) for clamping when the compression nut is connected and installed; the upper end of the compression nut is an open part (12) for flaring the guide pipe; the lowest end is provided with an opening (13) for the passing of a positioning part (8) of the hoop and the pressing part (7) of the hoop to be pressed.
2. The hydraulic burst test device for the annular fuel assembly guide pipe is characterized in that the overall length of the joint is 50-54mm, the maximum transverse dimension of the joint is 40mm, and the external thread (2) is M13 × 1.35.35 and has the thread length of 12-13 mm.
3. The apparatus for hydraulic burst testing of a ring fuel assembly guide tube of claim 1, wherein: the clamping nut (3) is 9-10mm in length and 40mm in transverse maximum size; the included angle of the smooth conical surface (4) is 60 degrees, the diameter of the small conical surface at the top is phi 11-12mm, and the diameter of the cone bottom is phi 28 mm.
4. The hydraulic burst test device for the annular fuel assembly guide pipe as recited in claim 1, wherein the compression thread (5) has a size of M30 × 1.5.5 and a length of 9-10mm, and the clip has a height of 18-22 mm.
5. The apparatus for hydraulic burst testing of a ring fuel assembly guide tube of claim 1, wherein: the diameter of the central hole B (6) is 16.8-17.2 mm; the compression part (7) has an outer diameter of 29-30mm and a height of 7-8 mm.
6. The apparatus for hydraulic burst testing of a ring fuel assembly guide tube of claim 1, wherein: the positioning part (8) has an outer diameter of 25-26mm and a height of 11-12 mm; the conical surface structure (9) has a conical surface included angle of 60 degrees and a height of 2 mm.
7. The hydraulic burst test device for the annular fuel assembly guide pipe as recited in claim 1, wherein the compression nut has a height of 33-34mm, and the size of the internal thread (10) is M30 × 1.5.
8. The apparatus for hydraulic burst testing of a ring fuel assembly guide tube of claim 1, wherein: the outer hexagonal nut structure (13) has the transverse maximum size of 42 mm; the transverse maximum diameter of the open part (12) is phi 30mm, and the height is 1 mm; the diameter of the opening (13) is phi 26.5mm, and the height of the opening is 2-3 mm; the joint, the hoop and the compression nut are all made of 304 stainless steel.
9. The apparatus for hydraulic burst testing of a ring fuel assembly guide tube of claim 1, wherein: the blasting medium is water.
10. A method for hydraulic burst testing of a ring fuel assembly guide tube, using the apparatus of claim 1, comprising the steps of:
connecting a joint to a joint of a bursting tester and screwing the joint, and placing a copper gasket in the middle;
secondly, enabling the open end of the sample to penetrate through the opening end of the compression nut, then penetrating through the clamp from the thin end, and performing flaring treatment on the open end of the sample guide pipe by using a flaring device, wherein the height is 3-5 mm;
thirdly, pressing the flaring part of the guide pipe close to the conical surface of the joint, connecting the compression nut with the joint and fastening;
starting a blasting tester, and finishing a blasting test according to a set program;
and step five, after the test is finished, unscrewing and taking down the compression nut on the guide pipe, sawing off the pipe by adhering to the thin end of the hoop, and finally taking down the hoop and the compression nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559892.3A CN111350890A (en) | 2018-12-20 | 2018-12-20 | Device and method for hydraulic blasting detection of annular fuel assembly guide pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559892.3A CN111350890A (en) | 2018-12-20 | 2018-12-20 | Device and method for hydraulic blasting detection of annular fuel assembly guide pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111350890A true CN111350890A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811559892.3A Pending CN111350890A (en) | 2018-12-20 | 2018-12-20 | Device and method for hydraulic blasting detection of annular fuel assembly guide pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111350890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816328A (en) * | 2020-11-27 | 2021-05-18 | 中核北方核燃料元件有限公司 | Device and method for hydraulic explosion detection of annular fuel assembly fuel rod |
| CN113217730A (en) * | 2021-04-30 | 2021-08-06 | 昆山国力电子科技股份有限公司 | High-temperature-resistant high-vacuum interface capable of conveniently realizing rigid-flexible conversion |
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| CN202075186U (en) * | 2011-05-13 | 2011-12-14 | 常州腾龙汽车零部件股份有限公司 | Test device for quick bursting of aluminum tube |
| CN105651472A (en) * | 2016-04-11 | 2016-06-08 | 重庆燃气集团股份有限公司 | Device integrating fuel gas plugging and vertical pipe pressure testing and plugging pressure testing method |
| CN206130355U (en) * | 2016-10-13 | 2017-04-26 | 何志林 | Aviation fluid pipeline connects |
| CN206280493U (en) * | 2016-11-25 | 2017-06-27 | 国核宝钛锆业股份公司 | A kind of nuclear zirconium alloy pipe blasting enlarging seal assembly |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070144601A1 (en) * | 2005-10-04 | 2007-06-28 | Brewis Roderick C | Measuring traction forces |
| CN202075186U (en) * | 2011-05-13 | 2011-12-14 | 常州腾龙汽车零部件股份有限公司 | Test device for quick bursting of aluminum tube |
| CN105651472A (en) * | 2016-04-11 | 2016-06-08 | 重庆燃气集团股份有限公司 | Device integrating fuel gas plugging and vertical pipe pressure testing and plugging pressure testing method |
| CN206130355U (en) * | 2016-10-13 | 2017-04-26 | 何志林 | Aviation fluid pipeline connects |
| CN206280493U (en) * | 2016-11-25 | 2017-06-27 | 国核宝钛锆业股份公司 | A kind of nuclear zirconium alloy pipe blasting enlarging seal assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816328A (en) * | 2020-11-27 | 2021-05-18 | 中核北方核燃料元件有限公司 | Device and method for hydraulic explosion detection of annular fuel assembly fuel rod |
| CN113217730A (en) * | 2021-04-30 | 2021-08-06 | 昆山国力电子科技股份有限公司 | High-temperature-resistant high-vacuum interface capable of conveniently realizing rigid-flexible conversion |
| CN113217730B (en) * | 2021-04-30 | 2023-01-03 | 昆山国力电子有限公司 | High-temperature-resistant high-vacuum interface capable of conveniently realizing rigid-flexible conversion |
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