CN207852324U

CN207852324U - A kind of sealing structure of containment

Info

Publication number: CN207852324U
Application number: CN201721300661.1U
Authority: CN
Inventors: 吴华鑫; 郭健; 尤小健; 张乃樑; 张皓; 端木晚露; 李元泰; 滕洪园; 郭建军; 夏风; 曾漾
Original assignee: 719th Research Institute of CSIC
Current assignee: 719th Research Institute of CSIC
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2018-09-11
Anticipated expiration: 2027-09-30

Abstract

The utility model discloses a kind of sealing structure of containment, it is related to nuclear safety protection field, which includes the vessel and a lid of a sealing, and the vessel reloads mouth equipped with one；The lid is installed on the vessel, and a connection piece is equipped between the lid and vessel；The connector includes the second hole and several first holes, first hole is connected by a bolt with the lid, second hole is connected with the mouth that reloads, the axial direction and the axial direction in second hole in several first holes are at an acute angle, the utility model can reduce the power along bolt axial direction, keep the connection of lid and connector tighter, ensures that the core gas in containment is not leaked.

Description

A kind of sealing structure of containment

Technical field

The utility model is related to nuclear safety to protect field, and in particular to a kind of sealing structure of containment.

Background technology

In order to meet the requirement of reloading of containment internal unit peculiar to vessel, need to the mouth that reloads be set at the top of containment, not In the case of reloading, the lid that reloads can be installed, the existing lid that reloads seals the mouth that reloads by tools for bolts ' pretension, to realize on the mouth that reloads Sealing to containment；Powerful internal pressure, which is applied to reload, when loss of-coolant accident (LOCA) occurring inside containment, inside containment covers, The bolt pretightening that part can be balanced out, the connection so as to the lid that causes to reload be not close so that core gas leaks out safety Shell.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sealing knots of containment Structure can increase the pretightning force of bolt, and core gas is made to be not easy to be compromised, to improve nuclear safety protection.

To achieve the above objectives, the technical scheme adopted by the utility model is that：A kind of sealing structure of containment, including：

The vessel of one sealing, the vessel reload mouth equipped with one；

One lid, the lid are installed on the vessel, and are equipped with one between the lid and vessel and are connected Fitting；

The connector includes the second hole and several first holes, and first hole is connected by a bolt with the lid, Second hole is connected with the mouth that reloads, and the axial direction and the axial direction in second hole in several first holes are at an acute angle.

Based on the above technical solution, the connector is integral (type) flange, and the connector includes flanged pipe and method Blue disk, first hole are set on the ring flange, and second hole is set in the flanged pipe.

Based on the above technical solution, the connector is umbrella.

Based on the above technical solution, the connector is lampshade shape.

Based on the above technical solution, the lid is equipped with several corresponding with first hole site fix Hole, the lid pass through first hole and mounting hole to be fixed on the connector by the bolt.

Based on the above technical solution, the lid is dome shape.

Based on the above technical solution, sealing ring is equipped between the lid and the connector.

Compared with prior art, the utility model has the advantage of：

(1) sealing structure of a kind of containment in the utility model, passes through the axial direction in the first hole that will be installed with lid The axial direction in the second hole being connected with the mouth that reloads is at an acute angle, can make to be applied on connector along mouthful axis direction that reloads Resultant force is decomposed into along axial and perpendicular to the first hole axial direction the power in the first hole, to which internal pressure powerful inside containment passes through When lid is acted on connector, the power acted on along the first hole axial direction is reduced, that is, reduces the power along bolt axial direction, makes lid It is tighter with the connection of connector, ensure that the core gas in containment is not leaked.

Description of the drawings

Fig. 1 is the schematic top plan view of sealing structure in the utility model embodiment；

Fig. 2 is the A-A of sealing structure in the utility model embodiment to schematic cross-section；

Fig. 3 is the partial enlarged view of sealing structure in the utility model embodiment.

In figure：1- reloads mouth, 2- lids, 21- mounting holes, 3- connectors, the first holes 31-, the second holes 32-, 33- flanges Pipe, 34- ring flanges, 4- bolts.

Specific implementation mode

The embodiments of the present invention are described in further detail below in conjunction with attached drawing.

Shown in Fig. 1 to Fig. 3, the utility model embodiment provides a kind of sealing structure of containment, including a sealing Vessel and a lid 2, vessel reloads mouth 1 equipped with one, and lid 2 is installed on vessel, and lid 2 and holds A connection piece 3 is equipped between device ontology；Connector 3 includes the second hole 32 and several first holes 31, and the first hole 31 passes through a bolt 4 It is connected with lid 2, the second hole 32 is connected with the mouth 1 that reloads, and the axial direction in several first holes 31 and the axial direction in the second hole 32 are at an acute angle, leads to The axial direction in the second hole 32 crossed the axial direction in the first hole 31 installed with lid 2 and be connected with the mouth 1 that reloads is at an acute angle, can make work The resultant force along 1 axis direction of mouth that reloads on connector 3 is used to be decomposed into along the first hole 31 axially and perpendicular to the first hole 31 axial power, when being acted on connector 3 by lid 2 to internal pressure powerful inside containment, reduction acts on edge The axial power in the first hole 31, that is, reduces along the axial power of bolt 4, keeps lid 2 and the connection of connector 3 tighter, ensure peace Core gas in full shell is not leaked.

Shown in Fig. 2 and Fig. 3, wherein connector 3 is integral (type) flange, and connector 3 includes flanged pipe 33 and ring flange 34, the first hole 31 is set on ring flange 34, and the second hole 32 is set in flanged pipe 33, it is preferred that connector 3 is umbrella or lampshade Shape；Connector 3 uses integral (type) flange, the higher pressure generated when can adapt to break down in containment to ensure that charging Mouthfuls 11 sealing performance, lid 2 are equipped with several mounting holes 21 corresponding with 31 position of the first hole, the axial direction of the mounting hole 21 and Its first opposite hole 31 it is axially coincident, and lid 2 passes through the first hole 31 and mounting hole 21 to be fixed on connector by bolt 4 On 3, it can ensure being completely embedded for the lid 2 and connector 3, the sealing performance of the safety be improved, between lid 2 and connector 3 It is additionally provided with sealing ring, the sealing performance between the lid 2 and connector 3 can be increased, the leakage for reducing containment kernel gas can Energy property, lid 2 are dome shape, have larger bearing capacity compared with plane cover.

The utility model is not only limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model Go out other various forms of products, however, make any variation in its shape or structure, it is every to have and the utility model phase Same or close technical solution, within its protection domain.

Claims

1. a kind of sealing structure of containment, which is characterized in that including：

The vessel of one sealing, the vessel reload mouth (1) equipped with one；

One lid (2), the lid (2) is installed on the vessel, and the lid (2) is equipped between vessel A connection piece (3)；

The connector (3) includes the second hole (32) and several first holes (31), first hole (31) by a bolt (4) and The lid (2) be connected, second hole (32) is connected with the mouth that reloads (1), the axial direction of several first holes (31) and The axial direction of second hole (32) is at an acute angle.

2. a kind of sealing structure of containment as described in claim 1, it is characterised in that：The connector (3) is global approach Orchid, the connector (3) include flanged pipe (33) and ring flange (34), and first hole (31) is set to the ring flange (34) On, second hole (32) is set in the flanged pipe (33).

3. a kind of sealing structure of containment as claimed in claim 2, it is characterised in that：The connector (3) is umbrella.

4. a kind of sealing structure of containment as described in claim 1, it is characterised in that：The lid (2) is equipped with several Mounting hole (21) corresponding with the first hole (31) position, the lid (2) pass through first hole by the bolt (4) (31) it is fixed on the connector (3) with mounting hole (21).

5. a kind of sealing structure of containment as described in claim 1, it is characterised in that：The lid (2) is dome shape.

6. a kind of sealing structure of containment as described in claim 1, it is characterised in that：The lid (2) and the connection Sealing ring is equipped between part (3).