CN203463641U - Wedge irradiation sample hole plug with self-locking function for pressurized water reactor - Google Patents
Wedge irradiation sample hole plug with self-locking function for pressurized water reactor Download PDFInfo
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- CN203463641U CN203463641U CN201320440924.4U CN201320440924U CN203463641U CN 203463641 U CN203463641 U CN 203463641U CN 201320440924 U CN201320440924 U CN 201320440924U CN 203463641 U CN203463641 U CN 203463641U
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- pedestal
- wedge
- hole
- voussoir
- irradiation sample
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Abstract
The utility model belongs to the technical field of pressurized water reactors of nuclear power stations and particularly discloses a wedge irradiation sample hole plug with a self-locking function for a pressurized water reactor. The wedge irradiation sample hole plug comprises a base, an upper end and a spring. The lower end of the upper end is disposed in a cup seat of the base, a pore circular retaining plate is machined in the base, a tapered hole is formed in the lower end of the base, a wedge is arranged in the tapered hole and in contact with the tapered hole, a push rod is arranged below the base and capable of driving the wedge to move along the contact surface of the wedge and the tapered hole, the wedge is pushed to compress the hole wall of the irradiation sample through the push rod by water pressurizing to generate friction, and accordingly, self-locking is achieved, the wedge irradiation sample hole plug is prevented from being jetted out by a loop of cooling agents to be scattered in the reactor randomly. Meanwhile, the wedge moves along the tapered surface, so that the radial component force is generated during dismounting of the hole plug to push the wedge to retract, and the hole plug can be pulled out easily.
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, as Fig. 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 is to provide a kind of ball conical surface irradiation sample stopple with auto-lock function.
Realize the technical solution of the utility model as follows:
Pressurized water reactor has a voussoir 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 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 center that is provided with in described pedestal processes porose circular baffle plate, and described spring is between this circular baffle plate and upper tip lower surface; Below described circular baffle plate, the both sides, lower end of pedestal are respectively equipped with cone shape hole, its bottom surface, hole is the conical surface; In described cone shape hole, be provided with voussoir, the bottom surface that voussoir contacts with cone shape hole is the conical surface; Described pedestal below is provided with push rod, and the upper end of push rod is carried out respectively axle by the first axle with the one end of two connecting rods below being located at circular baffle plate and is connected, and the other end of every connecting rod all carries out axle by the second axle and above-mentioned voussoir and is connected; Between two described connecting rods, be provided with spring thread, the middle part of this spring thread and above-mentioned the first axle are fixed.
At above-mentioned pressurized water reactor, have in the voussoir irradiation sample stopple of auto-lock function: described push rod middle part is cylinder, and cone structure is processed in push rod lower end, and the tapered edge checkpost of cone structure is in the bottom of pedestal.
At above-mentioned pressurized water reactor, have in the voussoir irradiation sample stopple of auto-lock function: described push rod upper end is processed with contiguous block, this contiguous block is connected with one end axle of connecting rod by the first axle.
At above-mentioned pressurized water reactor, have in the voussoir irradiation sample stopple of auto-lock function: the outer surface of described voussoir is spherical.
The obtained beneficial effect of the utility model is as follows:
By design pedestal structure, the kinematic pair that parts such as comprising push rod, connection, axle and spring thread form is installed in pedestal below, can drive voussoir to move along the surface of contact of itself and cone shape hole, realization is carrying out guaranteeing the in the situation that reactor peace being noted test or breaks down that by hydraulic pressure push rod, promoting voussoir 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., owing to having designed voussoir, along the conical surface, move meanwhile, in stopple demolishing process, produce component radially, impel voussoir retraction, can easily stopple be extracted.
Further, the space due between the parts in pedestal chamber wall and push rod and kinematic pair, has formed the passage together with the top and the bottom of stopple, can form overflow, avoids producing interior pressure and destruction condition of self-locking between kinematic pair.
Accompanying drawing explanation
Fig. 1 is pressurized water type reactor irradiation sample stopple schematic diagram of the prior art;
Fig. 2 is the voussoir 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. voussoir; 6. the second axle; 7. connecting rod; 8. spring thread; 9. the first axle; 10. push rod; 3.1. cup-shaped; 3.2. waist shaped hole; 3.3. circular baffle plate; 3.4. cone shape hole; 3.5. the conical surface; 10.1. contiguous block; 10.2. cone structure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 2, described pedestal 3 integral body are the ladder tubular of opening, cup-shaped seat 3.1 is processed in its upper end, cup-shaped seat is processed with two waist shaped holes 3.2 on 3.1 two sides, the integrated circular baffle plate 3.3 that is processed with of pedestal 3 cavity walls, described circular baffle plate 3.3 centers are processed with projection, are processed with through hole in projection, by this projection, spring 4 is arranged between circular baffle plate 3.3 and upper tip 1 lower surface.The both sides of the lower end internal chamber wall of pedestal 3 are processed with cone shape hole 3.4, and bottom surface, hole is the conical surface 3.5.
The lower end level of described 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.
Voussoir 5 is installed in described cone shape hole 3.4, and the outer surface of described voussoir 5 is spherical, and the bottom surface that voussoir 5 contacts with cone shape hole 3.4 is the conical surface 3.5, and when the motion of voussoir 5, voussoir 5 moves with the conical surface contacting 3.5 of cone shape hole 3.4 along it.
Described pedestal 3 belows are push rod 10, and the upper end of described push rod 10 is processed with contiguous block 10.1, and this contiguous block 10.1 is connected with one end axle of connecting rod 7 by the first axle 9, and the other end of each connecting rod 7 is all connected with above-mentioned voussoir 5 axles by the second axle 6.
Between two described connecting rods 7, be fixedly connected with a spring thread 8, in the groove that the middle card of described spring thread 8 is processed on above-mentioned the first axle 9.
In order to limit the range of movement of push rod 9, described push rod 1 middle part is cylinder, and cone structure 10.2 is processed in push rod 1 lower end, and the tapered edge checkpost of cone structure 10.2 is in the bottom of pedestal 3, thus the moving upward of restriction push rod 10.
Working principle:
A. during free state, spring 4 resets to topmost upper tip 1, and spring thread 8 makes push rod 10 move to topmost (push rod 10 upper-end surfaces contact with pedestal 3) when making both sides voussoir 5 extrapolated about 0.2mm;
B. in loading procedure, operation tool catch upper tip 1 inwall by stopple insert ，Dang both sides, irradiation sample hole voussoir 5 under the effect of the conical surface 3.5 guiding to inside contracting, make stopple easily enter irradiation sample hole;
C. pacify and note while waiting test, stopple below is impacted if there is hydraulic pressure, cooling water moves upward promotion push rod 10, due to both sides connecting rod 7 angulation self-locking conditions satisfied now, no matter many high (in the tolerance range of structural strength) the both sides voussoirs 5 of hydraulic pressure all can prop up hole wall securely, stop stopple to move upward;
D. when constant water pressure is born in stopple below, along matching gap, upwards a small amount of cooling water of infiltration can be by the gap between push rod 10 surroundings and pedestal 3 inwalls, through hole and the outside overflow of pedestal top waist shaped hole 3.2 through pedestal 3 lower end circular baffle plate 3.3 centers, avoid forming interior pressure and destruction condition of self-locking between pedestal 3 and push rod 10;
E. during reactor operation, hold down assembly upper tip 1 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 inwall upwards to pull out, drive pedestal 3 to move upward, due to cone shape hole 3.4 lower surfaces of voussoir 5 being installed on pedestal 3, be processed into the conical surface 3.5 coordinating with voussoir 5, can promote voussoir 5 and move upward, produce component radially simultaneously, impel voussoir 5 inwardly to bounce back, 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 (4)
1. a pressurized water reactor has the voussoir 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 spring (4) 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); The center that is provided with in described pedestal (3) processes porose circular baffle plate (3.3), and described spring (4) is positioned between this circular baffle plate (3.3) and upper tip (1) lower surface; Both sides, lower end at described circular baffle plate (3.3) below, pedestal (3) are respectively equipped with cone shape hole (3.4), and its bottom surface, hole is the conical surface (3.5); In described cone shape hole (3.4), be provided with voussoir (5), the bottom surface that voussoir (5) contacts with cone shape hole (3.4) is the conical surface (3.5); Described pedestal 3 belows are provided with push rod (10), the upper end of push rod (10) is carried out respectively axle by the first axle (9) with the one end that is located at two connecting rods (7) of circular baffle plate (3.3) below and is connected, and the other end of every connecting rod (7) all carries out axle by the second axle (6) and above-mentioned voussoir (5) and is connected; Between described two connecting rods (7), be provided with spring thread (8), the middle part of this spring thread (8) and described the first axle (9) are fixing.
2. pressurized water reactor as claimed in claim 1 has the voussoir irradiation sample stopple of auto-lock function, it is characterized in that: described push rod (1) middle part is cylinder, cone structure (10.2) is processed in push rod (1) lower end, and the tapered edge checkpost of cone structure (10.2) is in the bottom of pedestal (3).
3. pressurized water reactor as claimed in claim 1 has the voussoir irradiation sample stopple of auto-lock function, it is characterized in that: the upper end of described push rod (10) is processed with contiguous block (10.1), this contiguous block (10.1) is connected with one end axle of connecting rod (7) by the first axle (9).
4. pressurized water reactor as claimed in claim 1 has the voussoir irradiation sample stopple of auto-lock function, it is characterized in that: the outer surface of described voussoir (5) is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440924.4U CN203463641U (en) | 2013-07-23 | 2013-07-23 | Wedge irradiation sample hole plug with self-locking function for pressurized water reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320440924.4U CN203463641U (en) | 2013-07-23 | 2013-07-23 | Wedge irradiation sample hole plug with self-locking function for pressurized water reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463641U true CN203463641U (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320440924.4U Withdrawn - After Issue CN203463641U (en) | 2013-07-23 | 2013-07-23 | Wedge irradiation sample hole plug with self-locking function for pressurized water reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463641U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343979A (en) * | 2013-07-23 | 2015-02-11 | 中国核动力研究设计院 | Pressurized water reactor wedge irradiation sample hole plug with self-locking function |
| 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 |
| CN110783003A (en) * | 2019-10-18 | 2020-02-11 | 四川大学 | Wedge-shaped groove self-locking irradiation sample hole plug and implementation method thereof |
-
2013
- 2013-07-23 CN CN201320440924.4U patent/CN203463641U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343979A (en) * | 2013-07-23 | 2015-02-11 | 中国核动力研究设计院 | Pressurized water reactor wedge irradiation sample hole plug with self-locking function |
| 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 |
| CN109979612B (en) * | 2018-12-13 | 2019-12-17 | 四川大学 | Self-locking irradiation sample hole plug for pressurized water reactor and self-locking method thereof |
| CN110783003A (en) * | 2019-10-18 | 2020-02-11 | 四川大学 | Wedge-shaped groove self-locking irradiation sample hole plug and implementation method thereof |
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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: 20160831 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |