CN213660013U

CN213660013U - Nuclear filter element replacing tool

Info

Publication number: CN213660013U
Application number: CN202022685469.7U
Authority: CN
Inventors: 徐新
Original assignee: Cci Thermal Nanjing Co ltd
Current assignee: Cci Thermal Nanjing Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-07-09
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a nuclear filter core replacing tool belongs to nuclear industry auxiliary assembly field. The central guide pipe is fixedly connected to the lower part of the body, steel ball limiting holes are formed in the pipe wall along the circumferential direction, the spring is arranged between the body and the sliding block, and the sliding block is arranged in the central guide pipe and provided with a groove; when the spring is stressed and compressed, the sliding block moves upwards and the steel balls slide into the grooves in the sliding block; when the spring is unfolded, the steel ball enters the steel ball limiting hole along the groove, and part of the steel ball limiting hole is exposed. The groove direction design of central catheter bottom can make the location of filter core center tube easier, and the connector on the body can make instrument and arbitrary hoisting equipment cooperation use, and the circular shielding apron of body upper portion connection can form the shielding protective layer, snatchs when this instrument uses firm, break away from rapidly and do not need emollient and power supply, very environmental protection safety.

Description

Nuclear filter element replacing tool

Technical Field

The utility model relates to a filter core replacing tool, concretely relates to filter core replacing tool who uses under nuclear radiation condition belongs to nuclear industry auxiliary assembly field.

Background

In the filter element replacement situation at the present stage, after the filter shell is uncapped, the filter element top disc can be directly exposed in the air, and during this time interval between removal of the upper filter housing cover plate and installation of the spent cartridge transfer vessel, the cartridge assembly is exposed for a short period of time, albeit short term, to the operator and potentially dangerous, and, in addition, the positioning of the center of the filter element is difficult when the waste filter element transferring container is placed, the fine adjustment is required to be carried out for many times by operators, the working time is increased, moreover, when the waste filter element is put into the post-treatment barrel, the situation that the grabbing head is not easy to unhook often occurs, and at the moment, manual intervention is needed, but increased maintainer's dose of eating like this and operating time, reduced production efficiency, sometimes even still can appear the condition such as filter core destruction when the dismouting, seriously influence equipment operation and normal maintenance and repair.

Disclosure of Invention

The utility model aims to solve the technical problem that a nuclear filter core replacing tool is provided, this technical scheme overall structure reasonable in design, use safe and reliable.

In order to solve the technical problem, the utility model provides a nuclear filter core replacing tool, including body, central pipe, slider, spring and a plurality of steel ball, central pipe be located the below of body and with body fixed connection, be equipped with the spacing hole of steel ball corresponding with steel ball quantity along circumference on the pipe wall of central pipe, the spring sets up between body and slider, the slider is established in central pipe and is equipped with the recess corresponding with steel ball quantity, structure looks adaptation on the slider. When the spring is stressed and compressed, the sliding block moves upwards and the steel balls slide into the grooves in the sliding block; when the spring is unfolded, the steel ball enters the steel ball limiting hole along the groove, and part of the steel ball limiting hole is exposed. The cooperation of above-mentioned each structure can make the instrument can grab the filter core center tube more firmly when using and move the post processor with filter core subassembly steadily after the locking in, the instrument also is very easy rapidly when breaking away from with the filter core moreover, the difficult condition of unhooking can not appear.

As an improvement, the bottom of the central conduit is provided with a groove guide design, the design can play a role in positioning and guiding, a small amount of positioning deviation is accommodated, and the central tube of the filter element is positioned more easily in use.

As an improvement, a sliding block limiting block is arranged in the pipe wall of the central guide pipe, and the limiting block can control the sliding distance of the sliding block.

As an improvement, the upper part of the groove on the sliding block is in an inclined plane shape, so that the steel ball can slide more quickly.

As an improvement, the body is provided with a connecting port connected with an external hoisting tool, so that the tool can be matched with any hoisting equipment for use.

As an improvement, the upper part of the body is connected with a circular shielding cover plate, so that a shielding protective layer with the thickness not less than 10 mm can be formed, a certain protection effect is achieved in work, and any harmful influence of the environment on related personnel is avoided.

As an improvement, the edge of the circular shielding cover plate is provided with a double sealing ring, the double sealing ring can enable the tool to be more tightly connected with the filter element assembly in the filter element replacing process, and meanwhile, the double sealing ring can be tightly matched with a flange of a filter shell in the filter element using process, so that the sealing performance of the whole structure is ensured.

As an improvement, the circular shielding cover plate, the body and the central conduit are made of stainless steel 304L or 316L for the core, and can be cleaned and reused through a decontamination process after being used, so that the environment is protected, and the cost is saved.

The beneficial effects of the utility model reside in that: (1) the connecting and matching of the structure in the technical scheme can enable the tool to more firmly grab and lock the filter element when in use, the number of the steel balls can be set according to the weight of the filter element when in actual use, 8 steel balls are arranged in the implementation, the replacement tool can be ensured to bear the weight of the filter element component which is at least 2.5 times that of the replacement tool, the filter element component can not fall off after being locked, the structure is very easy and quick to separate from the filter element, and the situation of difficult unhooking can not occur; (2) in the utility model, the groove guide design on the central conduit can play a role of positioning and guiding and accommodate a small amount of positioning deviation, and the central tube of the filter element can be positioned more easily when in use; (3) in the utility model, the upper part of the body and the circular shielding cover plate are welded together to form a shielding protective layer with the thickness not less than 10 mm, and the shielding protective layer plays a role of protecting related personnel in work, the double sealing rings on the edge of the circular shielding cover plate can lead the tool and the filter element assembly to be connected more tightly, and meanwhile, the double sealing rings can be tightly matched with the flange of the filter shell to ensure the sealing performance of the whole structure in the using process of the filter element; the body is provided with a connector matched with an external hoisting tool, so that replacement can be completed through any hoisting tool without close-range contact operation of personnel; (4) the utility model discloses in, the material of circular shielding apron, body, central pipe is stainless steel 304L or 316L for the nuclear, can clean and use repeatedly through the decontamination technology after using, and the instrument does not need emollient also need not be equipped with the power supply when using, and service condition is simple and energy-concerving and environment-protective.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the working state structure of the present invention.

In the figure: 1. the body, 2, slider, 3, central pipe, 4, spring, 5, steel ball, 6, double seal circle, 7, circular shielding apron, 8, recess, 9, the spacing hole of steel ball, 10, connector, 11, slider stopper, 12, filter element group core tube pole, 13, filter element group core tube, 14, filter element group core tube pole limit structure, 15, steel ball spacing groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the utility model discloses a nuclear filter core change tool, including body 1, circular shielding apron 7, central pipe 3, slider 2, spring 4 and a plurality of steel ball 5. The body 1 and the circular shielding cover plate 7 are welded together, thereby forming a shielding protection layer with the thickness not less than 10 mm. The body 1 is provided with a connector 10 which can be matched with any external hoisting tool.

The edge of circular shielding apron 7 is equipped with double seal circle 6, and this double seal circle 6 can make change instrument and filter element group spare be connected to ground inseparabler, still can closely laminate with filter casing upper flange in the filter core use simultaneously and guarantee overall structure's leakproofness.

The central conduit 3 is located below the main body 1 and is fixedly connected with the main body 1, although the central conduit 3 and the main body 1 may also adopt an integral structure.

The pipe wall of the central guide pipe 3 is circumferentially provided with 8 steel ball limiting holes 9, and the steel balls 5 can be partially exposed out of the steel ball limiting holes 9. The inner lower part of the pipe wall of the central conduit 3 is provided with an annular slide block limiting block 11.

The slide block 2 is arranged in the central guide pipe 3 and can slide up and down along the central guide pipe 3. The spring 4 is disposed between the body 1 and the slider 2. The slider 2 is provided with 8 grooves 8 capable of containing the steel balls 5 along the circumferential direction, and the positions of the grooves 8 and the steel ball limiting holes 9 are opposite. The upper part of the groove 8 is in an inclined plane shape so as to facilitate the steel ball 5 to rapidly enter and exit the groove 8.

In this embodiment, the number of the steel balls 5 is 8, and the number of the steel ball limiting holes 9 and the number of the grooves 8 are the same as that of the steel balls 5, and as a person skilled in the art should know, the number of the steel balls 5 can be set by himself or herself as required, but at least 2 steel balls are guaranteed.

When the spring 4 is compressed under stress, the slide block 2 moves upwards and the steel ball 5 slides into the groove 8 along the inclined plane at the upper part of the groove 8; when the spring 4 is unfolded, the steel ball 5 enters the steel ball limiting hole 9 along the inclined plane at the upper part of the groove 8, and part of the steel ball limiting hole 9 is exposed. The slider stopper 11 can restrict the gliding distance of the slider 2, and the bottom of the central conduit 3 is provided with a groove to play a role in positioning and guiding the central tube of the filter element assembly.

As shown in figures 1 and 2, when the filter element assembly is put into use for the first time, an external hoisting tool such as a mechanical arm runs to the upper part of the filter element replacing tool, the mechanical arm is connected with a connecting port 10 on a body 1 of the replacing tool and then moves to the upper part of the filter element assembly on an operation table to vertically run downwards, a sliding block 2 and a spring 4 in the replacing tool are both in a natural state and limited by a sliding block limiting block 11, and the steel balls 5 are provided with 8 steel balls and are positioned in steel ball limiting holes 9.

After the replacing tool is vertically put down, the groove design at the bottom of the central conduit 3 can enable the tool to be very easily positioned to the central tube 13 of the filter element assembly, at the moment, the central tube rod 12 of the filter element assembly is inserted into the central conduit 3 of the replacing tool, and the outer wall of the central tube 13 of the whole filter element is directly sleeved on the central conduit 3 through outer wrapping.

In the connection process, the slide block 2 in the central guide pipe 3 is jacked up by the filter element central pipe rod 12 to compress the spring 4 on the slide block 2, the slide block 2 rises, the groove 8 on the slide block 2 gradually rises to the steel ball limiting hole 9, the steel ball 5 in the hole slides into the groove 8 along with the inclined plane on the upper part of the groove 8, and the outer wall of the filter element central pipe 13 can be sleeved on the central guide pipe 3 without obstruction and smoothly. The arm takes the change instrument to move upwards, and filter element group pipe pole 12 descends and is limited the position of gliding by filter element group pipe pole limit structure 14 under the dead weight effect, and the steel ball spacing groove 15 on the outer wall of filter element group pipe 13 at this moment flushes with the spacing hole of steel ball 9 position on the pipe wall of central catheter 3, and slider 2 among the central catheter 3 whereabouts thereupon and by the position of slider stopper 11 restriction whereabouts. The tension when the spring 4 is released enables the steel balls 5 in the groove 8 on the sliding block 2 to be ejected to the steel ball limiting hole 9 and clamped on the steel ball limiting groove 15 on the outer wall of the filter element central tube 13 which is flush and attached with the steel ball limiting hole, so that the locking state is achieved. At the moment, the mechanical arm can move the filter element assembly to the upper part of the filter according to a set route and put the filter element assembly into the filter, and the connecting port 10 can be loosened after the double sealing ring 6 on the replacing tool is seated on the lower flange of the filter shell, so that the upper flange cover of the filter shell is closed. The double sealing ring 6 is tightly attached to the upper flange of the filter shell to ensure the sealing performance of the whole structure, and the filter can be put into use.

When filter element group spare is changed to needs, open filter housing upper flange lid, useless filter element transfer container sits in filter housing top, and the arm takes out useless filter element group spare according to above-mentioned operation, promotes and moves it into shielding container in, then removes to the aftertreatment bucket and slowly puts down. Filter element group core pipe pole 12 contacts the bottom surface of aftertreatment bucket earlier, and filter element group core pipe pole 12 jack-up slider 2 in the central catheter 3 makes spring 4 compress when the arm descends, and steel ball 5 kick-backs to in recess 8 along 8 upper portion inclined planes of recess along with it, and the locking state is removed to the change instrument this moment, and filter element group core pipe 13 breaks away from with the change instrument. During the lifting process of the mechanical arm, the filter element assembly is gradually separated from the replacement tool and is hermetically sent to a post-treatment process line, and the replacement tool is also moved to a decontamination process for cleaning and decontamination and then is ready for use.

The utility model provides an use this thinking and method of nuclear filter core replacement instrument, the method and the way that specifically realize this technical scheme are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, do not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also regard as with moist decorations the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. A nuclear filter element replacement tool, characterized in that: comprises a body, a central conduit, a slide block, a spring and a plurality of steel balls;

the central guide pipe is positioned below the body and is fixedly connected with the body, and steel ball limiting holes corresponding to the number of steel balls are formed in the pipe wall of the central guide pipe along the circumferential direction;

the spring is arranged between the body and the sliding block, the sliding block is arranged in the central guide pipe, and grooves which correspond to the quantity of the steel balls and are matched with the structure are formed in the sliding block;

when the spring is compressed, the sliding block moves upwards and the steel balls slide into the grooves on the sliding block;

when the spring is unfolded, the steel ball enters the steel ball limiting hole along the groove, and part of the steel ball limiting hole is exposed.

2. A nuclear filter cartridge changer according to claim 1, wherein: the bottom of the central conduit is provided with a groove guide design.

3. A nuclear filter cartridge changer according to claim 1 or 2, wherein: and a sliding block limiting block is arranged in the pipe wall of the central guide pipe.

4. A nuclear filter cartridge changer according to claim 3, wherein: the upper part of the groove on the sliding block is in an inclined plane shape.

5. The nuclear filter cartridge replacement tool of claim 4, wherein: the body is provided with a connector used for being connected with an external hoisting tool.

6. A nuclear filter cartridge changer according to claim 1, wherein: the body is connected with the circular shielding cover plate.

7. A nuclear filter cartridge changer according to claim 6, wherein: the edge of the circular shielding cover plate is provided with a double sealing ring.

8. A nuclear filter cartridge changer according to claim 7, wherein: the circular shielding cover plate, the body and the central conduit are made of stainless steel 304L or 316L for the core.