CN217401823U - High-temperature anti-loosening rupture disc device - Google Patents

Abstract

A high-temperature anti-loose rupture disk device comprises a top cover, a shell, a connecting pipe and a rupture disk assembly; the top cover is hermetically connected with the shell to form a cavity, and the connecting pipe is arranged in the cavity; the top of takeover is equipped with first upper flange and first flange down, the rupture disc subassembly through the connection of first upper flange, first flange down set up in the top of takeover the rupture disc subassembly with the junction of first upper flange, first flange is equipped with the welding lip structure, the welding lip structure includes lip ring and pressure-bearing ring, is provided with the fastener on first upper flange and first flange down. The welding lip structure can effectively improve the sealing performance of the joint of the first upper flange and the first lower flange, and is suitable for application occasions with higher requirements on welding lip deformation compensation, such as high temperature, high pressure or fatigue load.

Description

High-temperature anti-loosening rupture disc device

Technical Field

The utility model belongs to the technical field of nuclear reactor steam generator pressure release protection, concretely relates to locking rupture disk device of high temperature.

Background

The steam generator is a key device of a main heat transmission system of the sodium-cooled fast reactor. In the sodium-cooled fast reactor operation process, the steam generator operates under the severe working conditions of high temperature, high pressure, high flow rate liquid scouring and sodium environment for a long time, and leakage accidents of a steam pipeline can occur. Once leakage occurs, water and sodium can generate violent sodium water reaction, a large amount of heat is released, the temperature and the pressure near a sodium water reaction area are increased rapidly, leakage is enlarged and spread, a steam generator is damaged, and normal operation of a sodium-cooled fast reactor can be threatened in severe cases.

The sodium water reaction is an explosion reaction which quickly releases hydrogen and quickly boosts pressure, so that overpressure and reactants are quickly released at the moment of the sodium water reaction, and the method is an effective measure for preventing disaster from expanding. At present, the control technologies adopted by various countries for the accident condition are the same, namely, a rupture disk device is installed to realize overpressure relief when sodium water reaction occurs, but the control technologies have different requirements for specific technical schemes and technical requirements.

Meanwhile, although the rupture disk device can realize overpressure relief, the rupture disk device cannot provide instant alarm signals for operators and a main protection system of the steam generator. When the rupture disk protection system is exploded, an operator can determine the action of the rupture disk only by a passive method such as the change of the operating parameters of the steam generator, the change of the monitoring parameters of the waste collecting tank and the like, and accordingly, the sodium water reaction in the steam generator is judged. In such a case, the emergency response is not fast enough due to the response delay, and there is a potential risk of accident expansion.

Disclosure of Invention

In order to overcome the above-mentioned shortcoming of prior art, the utility model aims at providing a locking rupture disk device of high temperature aims at solving the problem that prior art exists.

The utility model discloses a reach its purpose, the technical scheme who adopts as follows:

a high temperature, anti-loosening rupture disc apparatus, comprising:

the top cover, the shell, the connecting pipe and the rupture disk assembly;

the top cover is hermetically connected with the shell to form a cavity, and the connecting pipe is arranged in the cavity;

the top of takeover is equipped with first upper flange and first flange down, the rupture disc subassembly through the connection of first upper flange, first flange set up in the top of takeover the rupture disc subassembly with the junction of first upper flange, first flange is equipped with the welding lip structure, the welding lip structure includes lip ring and bearing ring, is provided with the fastener on first upper flange and first flange.

Preferably, the pressure-bearing ring is arranged on the outer side of the lip ring, and the first upper flange and the first lower flange extrude the pressure-bearing ring through fasteners, so that the pressure-bearing ring is tightly attached to the lip ring.

Preferably, the joint of one end of the lip ring and the first upper flange and the first lower flange is a fillet welding structure.

Preferably, the other end of the lip ring is circular or elliptical.

Preferably, the lip ring is a structure formed by spinning or stamping a steel plate.

Preferably, the fastener comprises a bolt member and a nut member, and a locking structure is arranged between the bolt member and the nut member.

Preferably, the anti-loosening structure is a welded body for integrally connecting the bolt member and the nut member.

Preferably, the anti-loosening structure is a spring washer, and the spring washer is arranged between the bolt piece and the nut piece.

Preferably, the spring washer is a belleville spring washer.

Preferably, the anti-loosening structure is a thin nut, and the thin nut is arranged on one side of the nut piece.

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

the utility model provides a locking rupture disc device of high temperature, the welding lip structure of setting can effectively improve the leakproofness of the junction of first upper flange, first flange, is applicable to the application scenario that high temperature high pressure or fatigue load etc. have higher requirement to welding lip deformation compensation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of a connection structure of the mounting seat and the connecting seat in the direction a of fig. 1;

description of reference numerals:

1-top cover, 2-shell, 3-connecting pipe, 4-blasting sheet component, 5-first upper flange, 6-first lower flange, 7-lip ring, 8-bearing ring, 10-bolt component and 11-nut component.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 2, an embodiment of the present invention provides a high-temperature anti-loose rupture disk device, including a top cover 1, a housing 2, a connecting pipe 3 and a rupture disk assembly 4;

the top cover 1 is hermetically connected with the shell 2 to form a cavity, and the connecting pipe 3 is arranged in the cavity;

the top of takeover 3 is equipped with first upper flange 5 and first flange 6 down, and rupture disc subassembly 4 sets up in the top of takeover 3 through the connection of first upper flange 5, first flange 6 down, is equipped with the welding lip structure at rupture disc subassembly 4 and the junction of first upper flange 5, first flange 6 down, welds the lip structure and includes lip ring 7 and bearing ring 8, is provided with the fastener on first upper flange 5 and first flange 6 down.

In this embodiment, specifically, the pressure-bearing ring 8 is disposed outside the lip ring 7, and the first upper flange 5 and the first lower flange 6 press the pressure-bearing ring 8 through the fastening member, so that the pressure-bearing ring 8 is tightly attached to the lip ring 7. The joint of one end of the lip ring 7 and the first upper flange 5 and the first lower flange 6 is provided with a fillet welding structure. The other end of the lip ring 7 is in a ring shape or an elliptical ring shape.

Specifically, the lip ring 7 is formed by spinning or punching a steel plate.

The first upper flange 5 and the first lower flange 6 provide load required by sealing through fastening connection of the fasteners, so that the action bearing ring 8 and the lip ring 7 are tightly attached to each other, the structure is simple and compact, and the welding device is suitable for application occasions with high requirements on welding lip deformation compensation, such as high-temperature and high-pressure or fatigue load.

In the present embodiment, for the improvement of the fastener connecting structure, the fastener includes a bolt member 10 and a nut member 11, and a locking structure is provided between the bolt member 10 and the nut member 11.

Specifically, the loosening prevention structure may be a welded body for connecting the bolt member 10 and the nut member 11 as one body.

Specifically, the anti-loosening structure may be a spring washer, which is provided between the bolt member 10 and the nut member 11.

In particular, the spring washer may be a belleville spring washer.

Specifically, the anti-loosening structure may be a thin nut, and the thin nut is disposed on one side of the nut member 11.

The above structures are all for preventing the loosening between the bolt member 10 and the nut member 11, thereby ensuring the proper sealing between the first upper flange 5 and the first lower flange 6.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used merely for convenience in description and simplicity in operation, and do not 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. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention has been described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. A high-temperature anti-loose rupture disc device is characterized by comprising:

the top cover, the shell, the connecting pipe and the rupture disk assembly;

the top cover is hermetically connected with the shell to form a cavity, and the connecting pipe is arranged in the cavity;

the top of takeover is equipped with first upper flange and first flange down, the rupture disc subassembly through the connection of first upper flange, first flange down set up in the top of takeover the rupture disc subassembly with the junction of first upper flange, first flange is equipped with the welding lip structure, the welding lip structure includes lip ring and pressure-bearing ring, is provided with the fastener on first upper flange and first flange down.

2. The high-temperature anti-loose rupture disc device according to claim 1, wherein the pressure-bearing ring is disposed outside the lip ring, and the first upper flange and the first lower flange press the pressure-bearing ring through a fastener and tightly attach the pressure-bearing ring to the lip ring.

3. The high-temperature anti-loosening rupture disc device according to claim 1, wherein the joint of one end of the lip ring and the first upper flange and the first lower flange is arranged in a fillet welding structure.

4. A high temperature anti-loosening rupture disc device according to claim 3, wherein the other end of the lip ring is provided in a circular or elliptical ring shape.

5. The high temperature anti-loosening rupture disc device according to claim 1, wherein the lip ring is a steel plate spun or stamped structure.

6. A high temperature anti-loosening rupture disc device according to claim 1, wherein the fastener comprises a bolt member and a nut member with an anti-loosening structure therebetween.

7. The high temperature anti-loosening rupture disc device according to claim 6, wherein the anti-loosening structure is a welded body for connecting the bolt member and the nut member as a single body.

8. The high temperature check rupture disc device of claim 6, wherein the check structure is a spring washer disposed between the bolt member and the nut member.

9. The high temperature check rupture disc device of claim 8, wherein the spring washer is a belleville spring washer.

10. The high temperature anti-loosening rupture disc device according to claim 6, wherein the anti-loosening structure is a thin nut provided on one side of the nut member.

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