CN203463642U - Ball tapered-surface irradiation sample hole plug with self-locking function for pressurized water reactor - Google Patents
Ball tapered-surface irradiation sample hole plug with self-locking function for pressurized water reactor Download PDFInfo
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- CN203463642U CN203463642U CN201320441202.0U CN201320441202U CN203463642U CN 203463642 U CN203463642 U CN 203463642U CN 201320441202 U CN201320441202 U CN 201320441202U CN 203463642 U CN203463642 U CN 203463642U
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- pedestal
- ball
- pressurized water
- push rod
- hole
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Abstract
The utility model belongs to the technical field of nuclear power station pressurized water type nuclear reactor structures and particularly discloses a ball-tapered surface irradiation sample hole plug with a self-locking function for a pressurized water reactor. The hole plug is composed of an upper end, a base, an optical shaft, a pressurized water push rod, a tapered ring, balls, a locking nut and two springs. The upper end is disposed at the upper end of the base, the springs are arranged in the base, the tapered ring is disposed at the lower end of the base, the pressurized water push rod penetrates the center of the tapered ring to enter the cavity of the base, the tapered surface of the tapered ring is attached to the balls, and the two springs are sleeved on the outside of the pressurized water push rod. The tapered ring and the balls are arranged below the base, the balls are tightly attached to the tapered surface of the tapered ring, the balls are pushed outwards by the tapered surface through the designed push rod structure, and accordingly, self-locking is formed between the balls and the radiation sample hole wall. The radiation sample hole plug is simple and not high in the requirement for machining accuracy and prone to adverse effects caused by long-term corrosion by cooling water during the operation. The high safety margin can be obtained through uniform loading of a plurality of the balls, and the safety is further enhanced by adding an overloading protection structure.
Description
Technical field
The utility model belongs to nuclear power station pressurized water nuclear reactor structure technology, is specifically related to a kind of irradiation sample stopple.
Background technique
In the cradle cylinder body of pressurized water type reactor core internals, be provided with irradiation sample frame.The sample material of placing in irradiation sample frame is identical with the material of reactor pressure vessel, so that the different phase within the phase in reactor longevity is taken out, carries out mechanical property test.Accordingly, the position perforate of corresponding irradiation sample frame on hanging basket flange, so that the special-purpose long rod tool of later-stage utilization dismantles irradiated sample, in order not produce extra by-pass flow, at position of opening, place irradiation sample stopple, when reactor operation, play the effect of restriction by-pass flow.
Pressurized water type reactor irradiation sample stopple is comprised of upper tip, pedestal, optical axis and spring at present, refer to accompanying drawing 1, this structure does not have auto-lock function, in dismounting, compress after the top in-pile component of irradiation sample stopple, in the situation that carrying out the notes test of reactor peace or breaking down, exist irradiation sample stopple by a circuit cools agent, to be gone out the possibility being scattered at random in reactor, have larger hidden danger.
Summary of the invention
The purpose of this utility model be to provide a kind of have auto-lock function ball conical surface irradiation sample stopple.
Realize the technical solution of the utility model as follows:
Pressurized water reactor has a ball conical surface irradiation sample stopple for auto-lock function, and it comprises pedestal, is located at the upper tip of pedestal upper end and is located at the first spring in pedestal, and the upper end of described pedestal is cup-shaped seat, and described cup-shaped seat is provided with waist shaped hole; Described upper tip lower end is provided with horizontal through hole, and optical axis is through through hole, and the two ends of optical axis are positioned at the waist shaped hole of both sides, pedestal upper end, and the lower end of upper tip is arranged in the cup-shaped seat of pedestal; The first described spring clip is in the space that the inner chamber of upper tip lower surface and pedestal surrounds; It is characterized in that: the stepped hole of processing in described pedestal, make cavity wall form step, described step below, the sidewall both sides of pedestal are provided with trapezoidal hole slot; The ball conical surface irradiation sample stopple that described pressurized water reactor has auto-lock function also comprises the conical ring that is located at pedestal lower end, and through conical ring center, enter the hydraulic pressure push rod of pedestal inner chamber; The surface of described conical ring is the conical surface, becomes back-off bowl-type, and center processing is porose, and in the outside of conical ring,, be provided with ball in the trapezoidal hole slot of pedestal, the conical surface of conical ring is fitted with ball; The inside of described conical ring is provided with the second spring, and described the first spring and the second spring are all sleeved on outside hydraulic pressure push rod.
At above-mentioned pressurized water reactor, have in the ball conical surface irradiation sample stopple of auto-lock function: described trapezoidal hole groove edge is circular hole, its axial cross section is the sphere diameter that the edge hole diameter of trapezoidal, described trapezoidal hole slot is less than ball.
At above-mentioned pressurized water reactor, have in the ball conical surface irradiation sample stopple of auto-lock function: the outside of described hydraulic pressure push rod is provided with locking nut, this locking nut is positioned at conical ring top, is stuck on the step of said base inside.
The obtained remarkable result of the utility model is as follows:
By design pedestal structure, conical ring and ball are installed in pedestal below, and the conical surface of ball and conical ring fits tightly, and utilizes the pusher structure of design, and the conical surface is extrapolated by ball, form self-locking with irradiation sample hole wall.Irradiation sample stopple is relatively simple, not high to requirement on machining accuracy, is not easy to be subject to the cooling water long-term corrosion that is subject in service and easily causes adverse effect.After all carrying by a plurality of balls, also can obtain higher margin of safety, add in addition overcurrent protection structure to can further improve Security.Further, utilize locking nut that hydraulic pressure push rod is connected on pedestal, can limit the range of movement of hydraulic pressure push rod.Whole device can be realized and carry out guaranteeing the in the situation that reactor peace being noted test or breaks down that by hydraulic pressure push rod, promoting ball compresses irradiation sample hole wall and produce frictional force and realize self-locking, prevents that irradiation sample stopple from being gone out at random and being scattered in reactor by a circuit cools agent.
Accompanying drawing explanation
Fig. 1 is pressurized water type reactor irradiation sample stopple schematic diagram in prior art;
Fig. 2 is the ball conical surface irradiation sample hole plug structure schematic diagram that pressurized water reactor has auto-lock function;
In figure: 1. upper tip, 2. optical axis; 3. pedestal; 4. spring; 5. locking nut; 6. ball; 7. conical ring; 8. the second spring; 9. hydraulic pressure push rod; 10. the first spring; 3.1. cup-shaped; 3.2. waist shaped hole; 3.3. step; 3.4. trapezoidal hole slot.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 2, irradiation sample stopple in the present embodiment is comprised of upper tip 1, pedestal 3, optical axis 2, hydraulic pressure push rod 9, conical ring 7, ball 6, locking nut 5, the first spring 10, the second spring 8, be arranged in the irradiation sample hole of reactor hanging basket flange, by hydraulic pressure push rod 9, promote ball 6 compression irradiation sample hole walls generation frictional force and realize self-locking.
The ladder tubular of the described whole one-tenth opening of pedestal 3, its upper end is cup-shaped seat 3.1, and the sidewall both sides of cup-shaped seat 3.1 are processed with waist shaped hole 3.2, and the cavity wall of pedestal 3 is processed with step 3.3, the ring-plane structure that described step 3.3 depression angle Xia Cheng centers are circular hole.Below described step 3.3, the sidewall both sides of pedestal 3 are processed with trapezoidal hole slot 3.4, described trapezoidal hole slot 3.4 edges are circular hole, described trapezoidal hole slot 3.4 axial cross sections are trapezoidal.
The lower end level of upper tip 1 is processed with through hole, and the lower end of upper tip 1 is arranged in the cup-shaped seat 3.1 of pedestal 3, and by optical axis 2, through through hole, the two ends of optical axis 2 are buckled in the waist shaped hole 3.2 of pedestal 3 both sides, upper end; The first spring 10 is installed below upper tip 1, and this first spring 10 is stuck in the space that the inner chamber of upper tip 1 lower surface and pedestal 3 surrounds.
The lower end of pedestal 3 is provided with conical ring 7, and described conical ring 7 is that surface is the back-off bowl-type of the conical surface, and center processing is porose.In the outside of conical ring 7, the interior installation ball 6 of the trapezoidal hole slot 3.4 of pedestal 3, the conical surface of conical ring 7 and ball 6 laminatings.The edge hole diameter of trapezoidal hole slot 3.4 is less than ball 6 sphere diameters, can prevent that ball 6 from dropping out.
Hydraulic pressure push rod 9, through hole and the pedestal 3 at conical ring 7 centers, enters in the inner chamber of pedestal 3, and the first described spring 10 is sleeved on outside hydraulic pressure push rod 9.
The inside of described conical ring 7 is provided with the second spring 8, the second springs 8 and is sleeved on outside hydraulic pressure push rod 9.
In order to limit the range of movement of hydraulic pressure push rod 9, locking nut 5 is installed in outside at hydraulic pressure push rod 9, described locking nut 5 is positioned at conical ring 7 tops, be stuck on the step 3.3 of said base 3 inside, while moving on hydraulic pressure push rod 9 promotion conical rings 7, the conical surface is extrapolated by ball 6, forms self-locking with irradiation sample hole wall.The second spring 8 plays limit load and prevents locked effect.
Working procedure is as follows:
A. during free state, the first spring 10 resets to topmost upper tip 1.Conical ring 7 is in the next, and ball can unrestricted motion;
B. in loading procedure, operation tool catches upper tip 1 inwall that stopple is inserted to irradiation sample hole, when ball 6 Free-rollings, makes stopple easily enter irradiation sample hole;
C. pacify and note while waiting test, stopple below is impacted if there is hydraulic pressure, and cooling water moves upward promotion hydraulic pressure push rod 9, now by the second spring 8, motion and water pressure is delivered to conical ring 7, drive ball 6 and the conical surface to produce extruding, stop hydraulic pressure push rod 9 to move upward;
D. when constant water pressure appearance fluctuation is born in stopple below, the second spring 8 can reduce the fluctuation of conical ring 7 motions, avoids destroying condition of self-locking.When hydraulic pressure is enough large, hydraulic pressure push rod 9 directly with 3 times end in contact of pedestal, avoid ball 6 to be pressed into hole wall, play limit load and prevent locked effect;
E. during reactor operation, hold down assembly upper tip is pressed downward to about 6mm, upper tip 1 just in time, by pedestal 3 top waist shaped hole 3.2 shutoff, is conducive to reduce seepage;
F. split out in process, operation tool catches upper tip 1 upwards to pull out along pedestal 3 inwalls, drive pedestal 3 to move upward, trapezoidal hole slot 3.4 on pedestal 3 can promote ball 6 and move upward, produce component radially simultaneously, impel ball 6 retractions, under this force-bearing situation, frictional force reduces with the increase of active force, therefore there will not be self-locking, can easily stopple be extracted.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.If these are revised and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (3)
1. a pressurized water reactor has the ball conical surface irradiation sample stopple of auto-lock function, it comprises pedestal (3), is located at the upper tip (1) of pedestal (3) upper end and is located at the first spring (10) in pedestal (3), the upper end of described pedestal (3) is cup-shaped seat (3.1), and described cup-shaped seat (3.1) is provided with waist shaped hole (3.2); Described upper tip (1) lower end is provided with horizontal through hole, optical axis (2) is through through hole, the two ends of optical axis (2) are positioned at the waist shaped hole (3.2) of pedestal (3) both sides, upper end, and the lower end of upper tip (1) is arranged in the cup-shaped seat (3.1) of pedestal (3); Described the first spring (10) is stuck in the space that the inner chamber of upper tip (1) lower surface and pedestal (3) surrounds; It is characterized in that: the stepped hole of processing in described pedestal (3), make cavity wall form step (3.3), the sidewall both sides of described step (3.3) below, pedestal (3) are provided with trapezoidal hole slot (3.4); The ball conical surface irradiation sample stopple that described pressurized water reactor has auto-lock function also comprises the conical ring (7) that is located at pedestal (3) lower end, and through conical ring (7) center, enter the hydraulic pressure push rod (9) of pedestal (3) inner chamber; The surface of described conical ring (7) is the conical surface, becomes back-off bowl-type, and center processing is porose, and in the outside of conical ring (7),, be provided with ball (6) in the trapezoidal hole slot (3.4) of pedestal (3), the conical surface of conical ring (7) is fitted with ball (6); The inside of described conical ring (7) is provided with the second spring (8), and described the first spring (10) and the second spring (8) are all sleeved on outside hydraulic pressure push rod (9).
2. pressurized water reactor as claimed in claim 1 has the ball conical surface irradiation sample stopple of auto-lock function, it is characterized in that: described trapezoidal hole slot (3.4) edge is circular hole, its axial cross section is trapezoidal, and the edge hole diameter of described trapezoidal hole slot (3.4) is less than the sphere diameter of ball (6).
3. pressurized water reactor as claimed in claim 1 has the ball conical surface irradiation sample stopple of auto-lock function, it is characterized in that: the outside of described hydraulic pressure push rod (9) is provided with locking nut (5), this locking nut (5) is positioned at conical ring (7) top, is stuck on the step (3.3) in said base (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441202.0U CN203463642U (en) | 2013-07-23 | 2013-07-23 | Ball tapered-surface irradiation sample hole plug with self-locking function for pressurized water reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441202.0U CN203463642U (en) | 2013-07-23 | 2013-07-23 | Ball tapered-surface irradiation sample hole plug with self-locking function for pressurized water reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463642U true CN203463642U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320441202.0U Withdrawn - After Issue CN203463642U (en) | 2013-07-23 | 2013-07-23 | Ball tapered-surface irradiation sample hole plug with self-locking function for pressurized water reactor |
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| CN (1) | CN203463642U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410963A (en) * | 2013-07-23 | 2013-11-27 | 中国核动力研究设计院 | Ball cone irradiation sample stopple with self-locking pressurized water reactor |
| CN109585043A (en) * | 2018-12-03 | 2019-04-05 | 四川大学 | Safe adjustable irradiation sample stopple and hanging basket flange |
| CN109979612A (en) * | 2018-12-13 | 2019-07-05 | 四川大学 | Self-locking type irradiation sample stopple and its self-locking method for presurized water reactor |
-
2013
- 2013-07-23 CN CN201320441202.0U patent/CN203463642U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410963A (en) * | 2013-07-23 | 2013-11-27 | 中国核动力研究设计院 | Ball cone irradiation sample stopple with self-locking pressurized water reactor |
| CN103410963B (en) * | 2013-07-23 | 2016-05-18 | 中国核动力研究设计院 | Presurized water reactor has the ball conical surface irradiation sample stopple of auto-lock function |
| CN109585043A (en) * | 2018-12-03 | 2019-04-05 | 四川大学 | Safe adjustable irradiation sample stopple and hanging basket flange |
| CN109585043B (en) * | 2018-12-03 | 2019-11-08 | 四川大学 | Safe adjustable irradiation sample stopple and hanging basket flange |
| CN109979612A (en) * | 2018-12-13 | 2019-07-05 | 四川大学 | Self-locking type irradiation sample stopple and its self-locking method for presurized water reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160518 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160518 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |