CN202487188U - Hydraulic separating tool for jam of fuel assembly - Google Patents
Hydraulic separating tool for jam of fuel assembly Download PDFInfo
- Publication number
- CN202487188U CN202487188U CN2011205194772U CN201120519477U CN202487188U CN 202487188 U CN202487188 U CN 202487188U CN 2011205194772 U CN2011205194772 U CN 2011205194772U CN 201120519477 U CN201120519477 U CN 201120519477U CN 202487188 U CN202487188 U CN 202487188U
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- China
- Prior art keywords
- cavity
- cylinder body
- fuel assembly
- hydraulic
- separating tool
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- Withdrawn - After Issue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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Abstract
The utility model relates to a hydraulic separating tool for jam between a fuel assembly and an in-pile upper part component, in particular to a hydraulic separating tool for jam of the fuel assembly. The tool comprises a hand-operated hydraulic pump, a high-pressure hose, a pipe connector and a separating cylinder; the separating cylinder comprises a top cover, a cylinder body, a piston, guide rods, springs and a separating claw; three cylindrical cavities towards the interior of the cylinder body are vertically formed in the top surface of the cylinder body, which are integrally distributed in a triangle manner; the piston is arranged in the first cavity; a hydraulic medium inlet is formed in the cylinder body below the first cavity; two guide rods are respectively arranged in the second cavity and the third cavity; one spring is sleeved outside each guide rod; the top cover is positioned at the top end of the cylinder body; top ends of the piston and the two guide rods are respectively and fixedly connected with the top cover; the position of the outer side of the cylinder body, close to the first cavity, is connected with the separating claw; the outlet of the hand-operated hydraulic pump is connected with one end of the high-pressure hose; and the other end of the high-pressure hose is connected with the hydraulic medium inlet through the pipe connector. The tool can separate the fuel assembly from the in-pile upper part component when the fuel assembly and the in-pile upper part component are jammed.
Description
Technical field
The utility model belongs to the hydraulic pressure separation and uses instrument, is specifically related to the hydraulic pressure separating tool of bite between a kind of fuel assembly and the heap internal upper part member.
Background technology
As shown in Figure 5; Because the cumulative effect of multiple complicated factor; Make the guide finger 18 of heap internal upper part member 15 depart from the fuel assembly pilot hole, cause between this group fuel assembly and the heap internal upper part member 15 the bite phenomenon taking place, during lifting heap internal upper part member 15 this fuel assembly is taken up.If this moment is separation means safely and effectively not, in case external factor causes the fuel assembly of bite to fall suddenly, with causing scrapping of fuel assembly, even damage other fuel assembly and equipment in the reactor core, there is security risk.So far, when a lot of liftings heap internal upper part member 15 has taken place in external pressurized-water reactor nuclear power plant, the incident that fuel assembly is taken up, so that incur loss through delay overhaul and reload the time, cause the tremendous economic loss.Therefore, be badly in need of a kind of dedicated separation instrument and handle this type of situation.
Summary of the invention
The purpose of the utility model is to provide a kind of fuel assembly bite hydraulic pressure separating tool, to satisfy the demand, guarantees the interior device security of fuel assembly and heap, reduces delay and the nuclear power station economic loss of the time of reloading.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of fuel assembly bite hydraulic pressure separating tool comprises hand hydraulic pump, high-pressure hose, pipe adapter and splitter cylinder; Splitter cylinder comprises top cover, cylinder body, piston, guide pole, spring and disengaging pawl; The end face of cylinder body vertically has three cylindrical cavities to cylinder interior, and wherein first cavity is positioned at a side of cylinder body central shaft, and second cavity and the 3rd cavity are positioned at the opposite side of cylinder body central shaft, and be relative with first cavity, and three integral hollow triangularities are arranged; In first cavity, be provided with piston, on the cylinder body of the first cavity bottom, have the hydraulic medium inlet; In second cavity and the 3rd cavity, be respectively arranged with a guide pole, the every all outer spring that is with of guide pole; Piston and guide pole all can move up and down in cavity separately; Top cover is positioned at the cylinder body upper end, has three through holes with three cavity correspondence positions of cylinder body on it, and insert respectively in three through holes of top cover the upper end of piston and two guide poles, and be fixedly connected with top cover; On the lateral surface of cylinder body near first cavity, be connected with disengaging pawl, the spatial form between the shape of disengaging pawl and pressurized leaf spring and the last base is complementary; Hand hydraulic pressure delivery side of pump is connected with an end of high-pressure hose, and the other end of high-pressure hose is connected with the hydraulic medium inlet through pipe adapter.
Between described hand hydraulic pressure delivery side of pump and the high-pressure hose, be respectively arranged with hydraulic quick coupler between high-pressure hose and the pipe adapter.
Between described hydraulic quick coupler and hand hydraulic pressure delivery side of pump, be provided with tensimeter.
The line of described second cavity and the 3rd cavity is perpendicular to the line of first cavity and cylinder body central shaft.
Described cylinder body is connected with disengaging pawl through screw.
The material of this instrument is a stainless steel.
Hydraulic medium in this instrument adopts deionized water.
The beneficial effect that the utility model is obtained is:
Separating when the said fuel assembly bite of the utility model hydraulic pressure separating tool can be realized fuel assembly with heap internal upper part member bite; Guarantee the safety of equipment in fuel assembly and the heap, avoid fuel assembly to damage causing the reload delay of time of radioactivity risk and overhaul.
The hydraulic system of the said fuel assembly bite of the utility model hydraulic pressure separating tool; Be that hand hydraulic pump-splitter cylinder adopts the less water hydraulic technology of practical applications; Hydraulic medium adopts deionized water, and the equipment of a whole set of hydraulic system all adopts the oil-free lubricatoin device, and main components and parts are stainless steel; To satisfy bigger separating force, guarantee that simultaneously the water quality of reactor pit does not receive a bit pollution.
Description of drawings
Fig. 1 is the said fuel assembly bite of a utility model hydraulic pressure separating tool structural drawing
Fig. 2 is the splitter cylinder sectional side view of the said fuel assembly bite of the utility model hydraulic pressure separating tool;
Fig. 3 is the splitter cylinder front view of the said fuel assembly bite of the utility model hydraulic pressure separating tool;
Fig. 4 is the splitter cylinder vertical view of the said fuel assembly bite of the utility model hydraulic pressure separating tool;
Fig. 5 is fuel assembly and upper component bite situation synoptic diagram;
Among the figure: 1, hand hydraulic pump; 2, tensimeter; 3, hydraulic quick coupler; 4, high-pressure hose; 5, pipe adapter; 6, top cover; 7, cylinder body; 8, piston; 9, guide pole; 10, spring; 11, disengaging pawl; 12, screw; 13, splitter cylinder; 14, hydraulic medium inlet; 15, heap internal upper part member; 16, leaf spring; 17, go up base; 18, guide finger.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figure 1, the said fuel assembly bite of the utility model hydraulic pressure separating tool comprises hand hydraulic pump 1, tensimeter 2, hydraulic quick coupler 3, high-pressure hose 4, pipe adapter 5 and splitter cylinder 13; Like Fig. 2, Fig. 3, shown in Figure 4, splitter cylinder 13 comprises top cover 6, cylinder body 7, piston 8, guide pole 9, spring 10 and disengaging pawl 11; Wherein the end face at cylinder body 7 vertically has three cylindrical cavities to cylinder body 7 inside; Wherein first cavity is positioned at a side of cylinder body 7 central shafts; Second cavity and the 3rd cavity are positioned at the opposite side of cylinder body 7 central shafts; Relative with first cavity, and the line of second cavity and the 3rd cavity is perpendicular to the line of first cavity and cylinder body 7 central shafts, and three integral hollow triangularities are arranged; In first cavity, be provided with piston 8, on the cylinder body 7 of the first cavity bottom, have hydraulic medium inlet 14; In second cavity and the 3rd cavity, be respectively arranged with a guide pole 9, the every all outer spring 10 that is with of guide pole 9; Piston 8 all can move up and down in cavity separately with guide pole 9; Top cover 6 is positioned at cylinder body 7 upper ends, has three through holes with 7 three cavity correspondence positions of cylinder body on it, and insert respectively in three through holes of top cover 6 upper end of piston 8 and two guide poles 9, and be fixedly connected with top cover 6; Be connected with disengaging pawl 11 through screw 12 at cylinder body 7 near the lateral surface of first cavity, the spatial form between the shape of disengaging pawl 11 and pressurized leaf spring 16 and the last base 17 is complementary; The outlet of hand hydraulic pump 1 is connected with an end of high-pressure hose 4; The other end of high-pressure hose 4 is connected with hydraulic medium inlet 14 through pipe adapter 5; Between the outlet and high-pressure hose 4 of hand hydraulic pump 1, be respectively arranged with hydraulic quick coupler 3 between high-pressure hose 4 and the pipe adapter 5, between the outlet of hydraulic quick coupler 3 and hand hydraulic pump 1, be provided with tensimeter 2.
Wherein: hand hydraulic pump 1 is the power source of this hydraulic pressure separating tool, for splitter cylinder 13 provides power; Pressure in the tensimeter 2 monitoring detachment processes changes, and changes the action of the hand hydraulic pump 1 of manual control according to pressure; Hydraulic quick coupler 3, high-pressure hose 4 and pipe adapter 5 are used to realize the medium transmission between hand hydraulic pump 1 and the splitter cylinder 13; Realize the separating action of fuel assembly bite through splitter cylinder 13; Contact with heap internal upper part member 15 through top cover 6; Cylinder body 7 provides support and installs the basis for other part; Jacking through piston 8 promotes top cover 6 motions, realizes the separating action of bite fuel assembly; Guide pole 9 provides guiding for moving up and down of piston 8, and simultaneously according to 3 principles of confirming planes, two guide poles 9 are confirmed top cover 6 these planes with piston 8, maintenance level when making top cover 6 motions; Realize the return of piston 8 and top cover 6 through spring 10; Through the separation of disengaging pawl 11 realization fuel assemblies, disengaging pawl 11 is parts the most key in this separating tool, and it utilizes the close gap between leaf spring 16 and the last base 17, together realizes separating of bite fuel assembly with top cover 6.
This separating tool mainly is that fuel assembly and the safe separating of piling internal upper part member 15 are realized in the gap between heap internal upper part member 15 and reactor flange face protection ring.Because radiation proof reason, separate instrument during work and under 9m deep water, accomplish, the people is in+20m platform pond bank operated from a distance.From security consideration; When lifting heap internal upper part member 15; In case finding has fuel assembly to take up thereupon, stop to promote heap internal upper part member 15 at once, pile the gap very little (in the 300mm) between internal upper part member 15 and the reactor flange face protection ring this moment; During this time in the crack except that separating tool, the accessory of the fuel assembly after support separating also need be installed.Separate in addition with the fuel assembly of piling internal upper part member 15 bites and need bigger separating force; General pneumatic apparatus is difficult to so under the small size condition so big separating force is being provided; In order to satisfy bigger separating force, guarantee that the water quality of reactor pit does not receive a bit pollution, the hydraulic system of this separating tool; Be that hand hydraulic pump 1-splitter cylinder 13 adopts the less water hydraulic technology of practical applications; Hydraulic medium adopts deionized water, and the equipment of a whole set of hydraulic system all adopts the oil-free lubricatoin device, and main components and parts are stainless steel.The spatial depiction of based on fuel assembly during with heap internal upper part member 15 bites utilizes gap between fuel leaf spring 16 and the last base 17 as the point of application of hydraulic pressure separating tool.
When the bite fuel assembly is separated, this separating tool is put into the reactor core pond, it is dropped on the reactor core flange face protection ring, adjust its orientation, the bite fuel assembly that disengaging pawl 11 is separated over against need; Through special stock instrument and underwater camera head, slowly with splitter cylinder 13 near the bite fuel assembly; Mutual alignment through between underwater camera head adjustment disengaging pawl 13 and the last base 17 makes disengaging pawl 11 just snap in the gap between leaf spring 16 and the last base 17; Operating personnel are the hand hydraulic pump 1 of the slow operation of platform in the pond; Hydraulic medium gets into first cavity through hydraulic quick coupler 3, high-pressure hose 4, pipe adapter 5 and hydraulic medium inlet 14; Promoting piston 8 moves upward; Piston 8 drives top cover 6 and moves upward, and top cover 6 contacts with heap internal upper part member 15, to realize separation; Can't separate if pile internal upper part member 15, then heap internal upper part members 15 are static relatively for top cover 6, and cylinder body 7 drives disengaging pawls 11 downward relative motions, to realize separation; Observe the separation case of bite fuel assembly and heap internal upper part member 15 in this process through camera, separate shut-down operation when being supported on the support beam fully, accomplish the lock out operation of bite fuel assembly until fuel assembly and heap internal upper part member 15.
Claims (7)
1. fuel assembly bite hydraulic pressure separating tool, it is characterized in that: this instrument comprises hand hydraulic pump (1), high-pressure hose (4), pipe adapter (5) and splitter cylinder (13); Splitter cylinder (13) comprises top cover (6), cylinder body (7), piston (8), guide pole (9), spring (10) and disengaging pawl (11); The end face of cylinder body (7) vertically has three cylindrical cavities to cylinder body (7) inside; Wherein first cavity is positioned at a side of cylinder body (7) central shaft; Second cavity and the 3rd cavity are positioned at the opposite side of cylinder body (7) central shaft, and be relative with first cavity, and three integral hollow triangularities are arranged; In first cavity, be provided with piston (8), on the cylinder body (7) of the first cavity bottom, have hydraulic medium inlet (14); In second cavity and the 3rd cavity, be respectively arranged with a guide pole (9), all outer spring (10) that is with of every guide pole (9); Piston (8) all can move up and down in cavity separately with guide pole (9); Top cover (6) is positioned at cylinder body (7) upper end; Have three through holes with (7) three cavity correspondence positions of cylinder body on it; Insert respectively in three through holes of top cover (6) upper end of piston (8) and two guide poles (9), and be fixedly connected with top cover (6); On the lateral surface of cylinder body (7) near first cavity, be connected with disengaging pawl (11), the spatial form between the shape of disengaging pawl (11) and pressurized leaf spring (16) and the last base (17) is complementary; The outlet of hand hydraulic pump (1) is connected with an end of high-pressure hose (4), and the other end of high-pressure hose (4) is connected with hydraulic medium inlet (14) through pipe adapter (5).
2. fuel assembly bite hydraulic pressure separating tool according to claim 1 is characterized in that: between the outlet and high-pressure hose (4) of described hand hydraulic pump (1), be respectively arranged with hydraulic quick coupler (3) between high-pressure hose (4) and the pipe adapter (5).
3. fuel assembly bite hydraulic pressure separating tool according to claim 2 is characterized in that: between the outlet of described hydraulic quick coupler (3) and hand hydraulic pump (1), be provided with tensimeter (2).
4. fuel assembly bite hydraulic pressure separating tool according to claim 1 is characterized in that: the line of described second cavity and the 3rd cavity is perpendicular to the line of first cavity and cylinder body (7) central shaft.
5. fuel assembly bite hydraulic pressure separating tool according to claim 1, it is characterized in that: described cylinder body (7) is connected with disengaging pawl (11) through screw (12).
6. according to the arbitrary described fuel assembly bite hydraulic pressure separating tool of claim 1 ~ 5, it is characterized in that: the material of this instrument is a stainless steel.
7. according to the arbitrary described fuel assembly bite hydraulic pressure separating tool of claim 1 ~ 5, it is characterized in that: the hydraulic medium in this instrument adopts deionized water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205194772U CN202487188U (en) | 2011-12-13 | 2011-12-13 | Hydraulic separating tool for jam of fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205194772U CN202487188U (en) | 2011-12-13 | 2011-12-13 | Hydraulic separating tool for jam of fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202487188U true CN202487188U (en) | 2012-10-10 |
Family
ID=46961592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205194772U Withdrawn - After Issue CN202487188U (en) | 2011-12-13 | 2011-12-13 | Hydraulic separating tool for jam of fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202487188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165205A (en) * | 2011-12-13 | 2013-06-19 | 核动力运行研究所 | Hydraulic separating tool for jam of fuel assembly |
| CN103700413A (en) * | 2013-12-20 | 2014-04-02 | 中广核核电运营有限公司 | Separator for jam between upper component and module in reactor core |
-
2011
- 2011-12-13 CN CN2011205194772U patent/CN202487188U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165205A (en) * | 2011-12-13 | 2013-06-19 | 核动力运行研究所 | Hydraulic separating tool for jam of fuel assembly |
| CN103165205B (en) * | 2011-12-13 | 2015-11-25 | 核动力运行研究所 | Fuel assembly bite hydraulic pressure separating instrument |
| CN103700413A (en) * | 2013-12-20 | 2014-04-02 | 中广核核电运营有限公司 | Separator for jam between upper component and module in reactor core |
| CN103700413B (en) * | 2013-12-20 | 2016-04-06 | 中广核核电运营有限公司 | The tripping device of reactor core internal upper part component and fuel assembly bite |
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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 |
Granted publication date: 20121010 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |