CN220014638U - Integrated isolation room for overhauling evaporator room of M310 type nuclear power unit - Google Patents

Abstract

The utility model discloses an integral isolation room for overhauling an evaporator room of an M310 nuclear power unit, which belongs to the technical field of isolation in the nuclear power industry and comprises a foldable and accommodating isolation room, wherein the isolation room is formed by splicing a plurality of TPU films in a heat sealing way, the isolation room is of an integral structure, and a plurality of hanging points for fixing and positioning are arranged at the end points of each heat sealing splicing plane of the isolation room.

Description

Integrated isolation room for overhauling evaporator room of M310 type nuclear power unit

Technical Field

The utility model discloses an isolation technology in the nuclear power industry, and particularly relates to an integrated isolation room for overhauling an evaporator room of an M310 type nuclear power unit.

Background

In the process of equipment overhaul in the nuclear field, a temporary pollution isolation area needs to be established in an overhaul site in order to prevent radioactive pollution from diffusing. In the current construction process of the air isolation room in the nuclear power plant, plastic films are needed to be cut manually according to the size and then are adhered by using adhesive tapes, so that the air tightness and the firmness are poor; the disassembly is a destructive operation, and is easy to cause the diffusion of radioactive pollution.

The traditional isolation room has the following defects in use due to the characteristics of limited field operation space, high radiation level of surrounding environment, easy diffusion of pollution, high safety risk and the like: 1. the disassembly rate is low, and the transportation and the storage are troublesome; 2. meanwhile, the protection is weak, and the waste production amount is large.

The evaporator room belongs to a high-dose environment, the annual human body dose is regulated according to a nuclear safety method, the dose level of the evaporator room is increased along with the increase of the operation age of a nuclear power unit, the traditional construction process time is not reduced, the personnel dose level is increased year by year, the construction process of the traditional air isolation room needs to manually construct a scaffold, then the plastic film is cut according to the size and spliced by using adhesive tapes, finally the scaffold is covered, the scaffold which is used as a support in the air isolation room needs to be dismantled and radioactive contamination is detected when the scaffold is dismantled, then the plastic film is dismantled and scrapped, the scaffold which meets the operation conditions needs to be prepared, scaffold fasteners and electric tools are used, the plastic film with proper size is cut, the adhesive tapes are adhered with gaps, the tightness is poor when the scaffold is dismantled, the waste amount is more, and the scaffold needs to be decontaminated when the scaffold is dismantled, and the pollution diffusion risk exists when the scaffold is dismantled.

Disclosure of Invention

The utility model aims to solve the problems and provide an integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an integral type isolation room that M310 type nuclear power unit evaporator room overhauld usefulness, includes the collapsible isolation room of accomodating, adopt a plurality of TPU film heat seal concatenation to form between the isolation, isolation room is integral type structure, the extreme point department of each heat seal concatenation plane between the isolation is equipped with a plurality of hanging points that are used for fixed location.

Through adopting above-mentioned technical scheme, wear through the rope and wind the hanging point and with the wall nail or the gib head locking fixed of on-the-spot component and wall fixed point department support each heat seal concatenation plane extreme point to this support isolation spacer expansion shaping greatly, the isolation spacer surface that TPU film heat seal concatenation formed has fine cleanability and inside has fine leakproofness and isolation effect.

Preferably, two end surfaces of the top of the isolation room are obliquely arranged, and an overhaul hole corresponding to the overhaul hole position of the steam generator is formed.

Through adopting above-mentioned technical scheme, make maintainer can conveniently overhaul from the access hole side through the slope terminal surface.

Preferably, the outer contour of the isolation room is in an annular surrounding structure.

By adopting the technical scheme, the annular surrounding structure covers two overhaul holes of the overhaul hole site of the group of steam generators, and the utilization area of the isolation room is improved.

Preferably, the isolation room is provided with an inlet and an outlet, and the position of the inlet and the outlet is arranged at one of the heat seal splicing planes of the isolation room.

By adopting the technical scheme, the joint surface can bear the supporting loss to other adjacent planes.

Preferably, the inlet and outlet are provided with a door curtain structure, the door curtain structure comprises an outer door curtain and an inner door curtain with the area larger than that of the outer door curtain, and the outer door curtain is provided with a zipper and a binding rope.

Through adopting above-mentioned technical scheme, interior door curtain is used for sheltering from the gap at zip fastener edge and prevents leaking to bind the rope and can roll up fixedly between the isolation after folding accomodate.

Preferably, an air purifying trolley connecting hole for connecting the air purifying trolley is reserved in the isolation room.

Through adopting above-mentioned technical scheme, the air purification dolly connecting hole can tailor wantonly according to the demand position to communicate air purification dolly makes air purification convenient and fast more.

Compared with the prior art, the utility model has the beneficial effects that:

firstly, the isolation room is supported by hanging points and reeled ropes to be unfolded so as to find fixed points such as wall nails or hook heads of walls and components for fixing, so that the isolation room can be conveniently transported, quickly built, dismantled and recovered, and the working time of building and dismantling by workers is reduced, thereby reducing the radiation dose suffered by the workers;

secondly, the inside of the isolation room is of a fully-closed structure, so that the negative pressure environment in the isolation room is stable, and the radiation pollution is not easy to diffuse;

thirdly, the TPU material realizes the characteristics of smooth surface, acid and alkali resistance, scrubbing resistance and the like of the isolation room, and can be repeatedly used after scrubbing and decontamination by using a detergent.

Drawings

FIG. 1 is a schematic structural view and a schematic installation view of an integrated isolation room for overhauling an evaporator room of an M310 type nuclear power unit after support molding;

FIG. 2 is a schematic view of a folding and storage compartment of an integrated compartment for maintenance of an evaporator room of an M310 nuclear power unit;

fig. 3 is a top view of an integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit.

Reference numerals: 1. hanging points; 2. an access opening; 3. an air purification trolley connecting hole; 4. an inner door curtain; 5. an outer door curtain; 6. binding ropes; 7. an end face.

Detailed Description

In the following description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in FIG. 1, the integral isolation room for overhauling the evaporator room of the M310 type nuclear power unit is formed by splicing a plurality of TPU films in a heat sealing way, the isolation room is of an integral structure, a plurality of hanging points 1 for fixing and positioning are arranged at the end points of each heat sealing splicing plane of the isolation room, and the hanging points 1 can be used for threading ropes.

In the M310 and the evaporator factory building of the three loops of the nuclear power unit based on the M310 upgrade, the steam generator needs to be overhauled regularly, the impurity sediment left in the steam generator is discharged, the heat conversion efficiency and the working stability of the steam generator are ensured, and the heat exchange holes are checked to prevent the heat transfer unbalance of the steam generator.

As shown in fig. 2-3, two end faces 7 at the top of the isolation room are obliquely arranged, and are provided with overhaul holes 2 corresponding to overhaul holes of the steam generator, wherein the overhaul holes of the steam generator are generally a drain hole working position and a heat exchange hole working position, the opened overhaul holes 2 can be adjusted according to the position spacing of the overhaul holes of the steam generator on site, so that the overhaul holes 2 of the single-core air isolation room can cover a group of overhaul holes of the steam generator, and the obliquely arranged end faces 7 facilitate maintenance personnel to stand below the overhaul holes 2 to observe and operate the overhaul holes.

The outer contour of the isolation room is an annular surrounding structure, and the annular surrounding structure realizes that maintenance personnel can move and operate between the access holes 2 at two different positions.

The isolation room is provided with an inlet and an outlet, the position of the inlet and the outlet is arranged at one of the heat seal splicing planes of the isolation room, and the hanging points 1 for supporting and fixing the isolation room part are generally positioned on different walls or components, so that the isolation room can be better supported and unfolded for forming, and the inlet and the outlet are arranged at the joint surface to reduce the local supporting loss of the isolation room, and the adjacent planes bear the supporting loss together.

The door curtain structure comprises an outer door curtain 5 and an inner door curtain 4 with the area larger than that of the outer door curtain 5, the outer door curtain 5 is provided with a zipper and binding ropes 6, the inner door curtain 4 is used for shielding gaps at the edges of the zipper to prevent leakage, and the binding ropes 6 can be used for winding and fixing the folded and stored isolation room.

The isolation room is further reserved with an air purification trolley connecting hole 3 for connecting the air purification trolley, and the air purification trolley connecting hole 3 can be cut randomly according to the required position and is communicated with the air purification trolley, so that air purification is more convenient and rapid.

The construction operation process comprises the following steps: manufacturing each splicing plane according to the positions and the intervals of overhaul hole sites of the steam generators in an evaporator factory building of a three-loop pressurized water reactor of a nuclear power unit which is updated by M310 and M310, bonding and combining each edge of each splicing plane through a hot air bonding process to form an isolation room with an integrated structure, and folding and storing the isolation room to reduce occupied volume for transportation; after the isolation room is conveyed to the overhaul station of the steam generator, the isolation room is tiled and unfolded according to the position of the overhaul hole, the overhaul hole 2 is aligned to the overhaul hole for adjusting the position, then the steel cable on the hanging point 1 is wound and fixed according to the on-site component and the wall position for searching the fixed point, and each plane of the isolation room is unfolded and supported to complete construction.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. An integral type isolation room that M310 nuclear power unit evaporator room overhauld usefulness which characterized in that: the foldable and foldable isolation room comprises an isolation room body, wherein the isolation room body is formed by splicing a plurality of TPU films in a heat sealing mode, the isolation room body is of an integrated structure, and a plurality of hanging points (1) for fixing and positioning are arranged at the end points of each heat sealing splicing plane of the isolation room body.

2. The integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit as set forth in claim 1, wherein: two end faces (7) at the top of the isolation room are obliquely arranged, and an overhaul hole (2) corresponding to an overhaul hole position of the steam generator is formed.

3. The integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit as set forth in claim 2, wherein: the outer contour of the isolation room is in an annular surrounding structure.

4. An integrated compartment for maintenance of an evaporator room of an M310 nuclear power unit as set forth in claim 3, wherein: the isolation room is provided with an inlet and an outlet, and the position of the inlet and the outlet is arranged at one of the heat seal splicing planes of the isolation room.

5. The integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit as set forth in claim 4, wherein: the inlet and outlet are provided with a door curtain structure, the door curtain structure comprises an outer door curtain (5) and an inner door curtain (4) with the area larger than that of the outer door curtain (5), and the outer door curtain (5) is provided with a zipper and a binding rope (6).

6. The integrated isolation room for overhauling an evaporator room of an M310 nuclear power unit as set forth in claim 5, wherein: an air purification trolley connecting hole (3) for connecting the air purification trolley is reserved in the isolation room.