CN215815212U

CN215815212U - Foreign matter fishing device used in spent fuel pool fuel grillwork

Info

Publication number: CN215815212U
Application number: CN202121637920.6U
Authority: CN
Inventors: 许鹏锋; 谭炜杰; 秦川; 龙建辉
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-02-11
Anticipated expiration: 2031-07-19

Abstract

The utility model relates to a foreign matter fishing device used in a spent fuel pool fuel grillwork, which comprises: the shape of the foreign body basket corresponds to that of the holes at the bottom of the grillage, and the upper end of the foreign body basket is provided with a groove; one end of the adsorption rod is an operation end, the other end of the adsorption rod is an adsorption end, the adsorption end adsorbs foreign matters under the control of the operation end, and then the adsorbed foreign matters are transferred to the groove. The above-mentioned scheme that this application provided, simple structure, convenient operation just can used repeatedly, when salvaging the foreign matter in the framework, only need put into corresponding framework bottom hole with the foreign matter basket, then adsorb the foreign matter through operation end control adsorption end, shift adsorbed foreign matter to the foreign matter basket again, at last take out the foreign matter basket from the framework again can, whole process greatly reduced the viscous force demand of current weight, the efficiency is improved, personnel's irradiation dose is reduced.

Description

Foreign matter fishing device used in spent fuel pool fuel grillwork

Technical Field

The utility model relates to the technical field of equipment for a spent fuel pool, in particular to a foreign matter fishing device used in a fuel grillwork of the spent fuel pool.

Background

At present, when handling the foreign matter in the spent fuel pool grillage, original foreign matter fishing tool is general type fishing tool, and the design does not fully consider when the foreign matter appears in this specific situation in the fuel grillage, handles the foreign matter and need push down the foreign matter with the weight, promotes the foreign matter to fuel grillage mouth through the viscous force, then puts into the foreign matter basket of collecting the foreign matter.

In the whole process, the surface of the heavy hammer cannot be stuck with dust, otherwise, the heavy hammer cannot stick foreign matters, the distance of 5 meters needs to be increased after the heavy hammer sticks the foreign matters, the foreign matters are easy to fall off, and the foreign matters can be transferred to places which are difficult to observe through the bottom and the side holes of the grillwork after falling off, so that great inconvenience is brought to fishing.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a foreign matter fishing device for use in a spent fuel pool grid, aiming at the problem that the conventional foreign matter fishing tool for use in the spent fuel pool grid is inconvenient to use.

The utility model provides a foreign matter fishing device used in a spent fuel pool fuel grillwork, which comprises:

the shape of the foreign body basket corresponds to that of the holes at the bottom of the grillwork, and the upper end of the foreign body basket is provided with a groove;

the one end of adsorbing the pole is the operation end, and the other end is the absorption end, the absorption end is in adsorb the foreign matter under the control of operation end, then shift adsorbed foreign matter to the recess.

Above-mentioned foreign matter fishing device is used in spent fuel pool fuel framework, moreover, the steam generator is simple in structure, convenient operation and can used repeatedly, when salvaging the foreign matter in the framework, only need put into corresponding framework bottom hole with the foreign matter basket, then adsorb the end through operation end control and adsorb the foreign matter, shift adsorbed foreign matter to the foreign matter basket again, at last take out the foreign matter basket from the framework again can, whole process greatly reduced the viscous force demand of current weight, the efficiency is improved, reduce personnel's irradiation dose.

In one embodiment, the foreign object basket comprises a cylindrical basket, the groove is axially formed in the upper end of the cylindrical basket, and an object inlet groove is formed in the upper side face of the cylindrical basket.

In one embodiment, the foreign body basket further comprises a pair of fin plates symmetrically arranged at the side of the cylindrical basket.

In one embodiment, the side surface of the cylindrical basket is provided with a drain hole.

In one embodiment, the hanging ring is arranged on the upper side surface of the cylindrical basket.

In one embodiment, the hanging ring and the object inlet groove are arranged on the upper side surface of the cylindrical basket at intervals.

In one embodiment, the foreign object basket further comprises a blocking baffle, and the foreign object basket is arranged in the blocking baffle.

In one embodiment, the side face of the blocking enclosing plate is provided with a through hole.

In one embodiment, an adhesive layer is disposed on the suction end.

In one embodiment, the length of the suction rod is adjustable.

Drawings

Fig. 1 is a schematic structural view of a foreign matter fishing device for use in a spent fuel pool fuel grid according to an embodiment of the present invention;

FIG. 2 is a schematic view of the foreign object basket of FIG. 1;

FIG. 3 is a schematic view of yet another foreign object basket of FIG. 1;

FIG. 4 is a schematic view of the blocking shroud of FIG. 1;

FIG. 5 is a schematic view of the blocking shroud of FIG. 1;

FIG. 6 is a schematic view of the sorption bar of FIG. 1;

FIG. 7 is a schematic view of a prior art fuel lattice;

fig. 8 is a schematic view of the bottom holes of a conventional fuel lattice.

The figures are labeled as follows:

10. a foreign matter basket; 101. a cylindrical basket; 1011. an object inlet groove; 1012. a drain hole; 102. a groove; 103. a fin plate; 20. blocking the coaming; 201. a first enclosing plate; 202. a second enclosing plate; 30. hanging a ring; 40. an adsorption rod; 50. a framework; 501. a first hole; 502. a second aperture.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 in combination with fig. 2 and 6, in an embodiment of the present invention, there is provided a foreign matter fishing device for use in a spent fuel pool fuel rack, including: foreign matter basket 10 and adsorption rod 40, wherein, the shape of foreign matter basket 10 is corresponding with the shape of grid bottom hole, and the upper end of foreign matter basket 10 is provided with recess 102, and the one end of adsorption rod 40 is the operation end, and the other end is the adsorption end, and the adsorption end adsorbs the foreign matter under the control of operation end, then shifts the adsorbed foreign matter to recess 102.

The utility model provides a foreign matter fishing device is used in spent fuel pool fuel framework, moreover, the steam generator is simple in structure, convenient operation and can used repeatedly, when salvaging the foreign matter in the framework, only need put into corresponding framework bottom hole with the foreign matter basket, then adsorb the end through operation end control and adsorb the foreign matter, shift adsorbed foreign matter to the foreign matter basket again, at last take out the foreign matter basket from the framework can, whole process greatly reduced the viscous force demand of current weight, the efficiency is improved, reduce personnel's irradiation dose.

In some embodiments, as shown in fig. 3, the foreign object basket 10 of the present application includes a cylindrical basket 101, the cylindrical basket 101 is axially provided with a groove 102 at an upper end thereof, and an object inlet 1011 is provided on an upper side of the cylindrical basket 101.

As shown in fig. 7 and fig. 8, the outer diameter of the basket 101 corresponds to the inner diameter of the first hole 501 at the bottom of the grid 50, when in use, the basket 101 is firstly put into the first hole 501 at the bottom of the grid 50, so as to prevent the foreign objects from transferring during the fishing process, and then the fished foreign objects are transferred into the groove 102 through the inlet slot 1011 by the absorption rod 40. Since the bottom surface of the inlet slot 1011 is located below the upper side surface of the cylindrical basket 101, foreign matters on the adsorption rod 40 can be transferred into the groove 102 without pulling up the adsorption rod 40 to a too high position.

In some embodiments, as shown in fig. 2, the foreign object basket 10 of the present application further includes a pair of fin plates 103, and the pair of fin plates 103 are symmetrically disposed at the side of the cylindrical basket 101.

As shown in fig. 7 in combination with fig. 8, when the bottom of the lattice 50 is provided with the second holes 502, it is necessary to use the basket 101 with the fin 103 to block the second holes 502 through the basket 101 with the fin 103 when fishing out the foreign objects at the bottom of the lattice 50, so as to prevent the foreign objects from transferring during the fishing process.

In some embodiments, as shown in fig. 2, the sides of the cylindrical basket 101 in the present application are provided with drainage holes 1012. When the basket 101 is placed at the bottom of the lattice 50, the liquid in the lattice 50 may enter the basket 101, and the drainage holes 1012 are provided to conveniently drain the liquid flowing into the basket 101.

In some embodiments, in order to conveniently place the basket 101 at the bottom of the grid 50, as shown in fig. 2, the foreign matter fishing device for a spent fuel pool fuel grid of the present application further includes a hanging ring 30, and the hanging ring 30 is disposed on the upper side of the basket 101.

Specifically, including two link 30 in this application, be provided with the screw hole on the last side of cylinder basket 101, be provided with the threaded rod on the link 30, when the installation, only need with the threaded rod on the link 30 rotate to the cylinder basket 101 on the side in the screw hole can. In use, one end of the pull cord is tied to the suspension loop 30 and then the pull cord is released to allow the basket 101 to fall into the holes in the bottom of the grid 50.

In some embodiments, as shown in fig. 2, the hanging ring 30 and the object inlet slot 1011 are spaced apart from each other on the upper side of the cylindrical basket 101.

Specifically, the hanging rings 30 and the object inlet slots 1011 are arranged on the upper side surface of the cylindrical basket 101 at intervals of 90 °, and since the two hanging rings 30 are symmetrically arranged on the cylindrical basket 101, when the cylindrical basket 101 is put into the holes at the bottom of the lattice 50 by using the pulling rope, the balance of the whole cylindrical basket 101 can be ensured, and meanwhile, the object inlet slots 1011 are formed in the upper side surface of the cylindrical basket 101.

In some embodiments, in order to block the holes of the side plates of the grid 50, the foreign object fishing device for the spent fuel pool fuel grid of the present application further comprises a blocking baffle 20, wherein the foreign object basket 10 is arranged in the blocking baffle 20.

Specifically, as shown in fig. 4 in combination with fig. 5, the blocking shroud 20 includes a first shroud 201 and a second shroud 202, where the first shroud 201 and the second shroud 202 are both U-shaped structures, the first shroud 201 and the second shroud 202 are connected together by bolts to form a square structure, at this time, the peripheries of the blocking shrouds 20 are connected end to end, and the upper side and the lower side of the blocking shroud 20 are both open structures, when in use, the blocking shroud 20 is first placed into the lattice 50, then one end of a traction rope is tied to the hanging ring 30, the traction rope is released to make the cylinder basket 101 fall into the hole at the bottom of the lattice 50, at this time, the adsorption rod 40 is used to salvage the foreign matters in the lattice, and at the same time, the salvaged foreign matters are transferred to the foreign matters basket 10, and finally the foreign matters basket 10 and the blocking shroud 20 are taken out, the whole process greatly reduces the viscous force requirement of the existing heavy hammer, and improves the efficiency, the irradiation dose of the personnel is reduced.

In some embodiments, the side of the blocking baffle 20 in the present application is provided with through holes, when the blocking baffle 20 is placed in the lattice 50, the liquid in the lattice 50 may flow into the blocking baffle 20, and the through holes are provided to conveniently discharge the liquid flowing into the blocking baffle 20.

In some embodiments, an adhesive layer is provided on the adsorption end of the adsorption rod 40 in order to facilitate the adsorption rod to salvage foreign objects in the grid. When the foreign matter transferring basket is used, foreign matters are adhered through the adhesive layer on the adsorption end, and then the foreign matters are transferred into the foreign matter basket 10.

It should be noted that, in the embodiment of the present application, the structure that the adsorption end on the adsorption rod is provided with the adhesive layer to adhere the foreign object is only an example, and in other alternative schemes, other structures may also be adopted, for example, a clamping jaw is provided at one end of the adsorption rod, and the clamping jaw is used to grab the foreign object.

In some embodiments, the length of the adsorption rod 40 in the present application may be adjustable in order to facilitate adjustment of the length of the adsorption rod 40.

In summary, in an embodiment of the present invention, a foreign object fishing device for a spent fuel pool fuel grid includes: foreign matter basket 10 and adsorption rod 40, wherein, the shape of foreign matter basket 10 is corresponding with the shape of grid bottom hole, and the upper end of foreign matter basket 10 is provided with recess 102, and the one end of adsorption rod 40 is the operation end, and the other end is the adsorption end, and the adsorption end adsorbs the foreign matter under the control of operation end, then shifts the adsorbed foreign matter to recess 102. The utility model provides a foreign matter fishing device is used in spent fuel pool fuel framework, moreover, the steam generator is simple in structure, convenient operation and can used repeatedly, when salvaging the foreign matter in the framework, only need put into corresponding framework bottom hole with the foreign matter basket, then adsorb the end through operation end control and adsorb the foreign matter, shift adsorbed foreign matter to the foreign matter basket again, at last take out the foreign matter basket from the framework can, whole process greatly reduced the viscous force demand of current weight, the efficiency is improved, reduce personnel's irradiation dose.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an interior foreign matter fishing device that uses of spent fuel pool fuel grillwork which characterized in that includes:

the foreign body basket (10), the shape of the foreign body basket (10) corresponds to the shape of the holes at the bottom of the grillwork, and the upper end of the foreign body basket (10) is provided with a groove (102);

the adsorption device comprises an adsorption rod (40), wherein one end of the adsorption rod (40) is an operation end, the other end of the adsorption rod is an adsorption end, the adsorption end adsorbs foreign matters under the control of the operation end, and then the adsorbed foreign matters are transferred to the groove (102).

2. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 1, wherein the foreign matter basket (10) comprises a cylindrical basket (101), the groove (102) is axially provided at an upper end of the cylindrical basket (101), and an inlet groove (1011) is provided on an upper side of the cylindrical basket (101).

3. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 2, wherein the foreign matter basket (10) further comprises a pair of fin plates (103), and the pair of fin plates (103) are symmetrically disposed at the side of the cylindrical basket (101).

4. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 2, wherein the side of the cylinder basket (101) is provided with a drainage hole (1012).

5. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 2, further comprising a hanging ring (30), wherein the hanging ring (30) is provided on an upper side of the cylinder basket (101).

6. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 5, wherein the hanging ring (30) and the inlet slot (1011) are provided at intervals on an upper side of the cylindrical basket (101).

7. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 1, further comprising a blocking fence (20), wherein the foreign matter basket (10) is disposed inside the blocking fence (20).

8. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 7, wherein the side of the blocking fence (20) is provided with a through hole.

9. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 1, wherein an adhesive layer is provided on the adsorption end.

10. The foreign matter fishing device for use in a spent fuel pool fuel lattice according to claim 1, wherein the length of the adsorption rod (40) is adjustable.