CN220892597U - Overpressure protection device for molten salt system - Google Patents

Abstract

The utility model discloses an anti-overpressure protection device of a molten salt system, which relates to the technical field of molten salt protection structures and comprises a mounting pipeline, wherein a rupture disc structure is arranged on the mounting pipeline, a first elbow is arranged at the front side of the mounting pipeline, a transition pipeline is connected with the first elbow, and a second elbow is arranged at the front section of the transition pipeline; wherein the second elbow is used for connecting the molten salt pipeline. The utility model has the advantages of stability, reliability and long service life.

Description

Overpressure protection device for molten salt system

Technical Field

The utility model relates to the technical field of molten salt protection structures, in particular to an overpressure protection device for a molten salt system.

Background

In the tower type photo-thermal generator set, a heat absorber converts accumulated solar radiation energy into heat energy, heats internal heat transfer molten salt, conveys the heat transfer molten salt to the ground through a pipeline after reaching a certain temperature, stores the heat transfer molten salt in a high-temperature molten salt storage tank, and conveys the heat transfer molten salt to a steam generator through a hot salt pump to exchange heat with water fed by a steam turbine when generating electricity, so that high-pressure superheated steam is generated to drive the steam turbine generator set to generate electricity. In the high-temperature molten salt conveying process, the pressure relief protection is needed to be avoided exceeding the pressure threshold value, if the pressure relief protection is needed to be carried out, but in the current practical use process, the pressure relief protection device is carried out when the pressure threshold value is not reached, meanwhile, the pressure relief protection device is broken and damaged when the service life of the pressure relief protection device is not reached, replacement is needed, and through analysis and investigation, the rupture disc in the pressure relief protection device is found to be unstable in structure, and meanwhile, the rupture disc is easily damaged by impact when being impacted by the molten salt even if the pressure threshold value is not reached.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides an anti-overpressure protection device for a molten salt system, which aims to solve the technical problems.

The utility model provides an anti-overpressure protection device of a molten salt system, which comprises a mounting pipeline, wherein a rupture disc structure is arranged on the mounting pipeline, a first elbow is arranged at the front side of the mounting pipeline, a transition pipeline is connected with the first elbow, and a second elbow is arranged at the front section of the transition pipeline; wherein the second elbow is used for connecting the molten salt pipeline. In the whole fused salt system overvoltage protection device, the explosion-proof sheet structure is installed through the installation pipeline, and then the fused salt pipeline is connected through the first elbow, the transition pipeline and the second elbow, so that the position of the explosion-proof sheet structure can be reasonably optimized, the first elbow, the transition pipeline and the second elbow are used for steering and buffering fused salt, the fused salt is prevented from suddenly impacting the explosion-proof sheet structure from the fused salt pipeline, the maximum threshold value set by the explosion-proof sheet structure is matched with the fused salt pressure which can be practically protected as much as possible, and the use effect and the service life are improved.

Preferably, the rupture disk structure is including fixing last disk body and the lower disk body on the installation pipeline, go up the disk body with the card is equipped with rupture disk body and limit structure between the lower disk body, the rupture disk body separates to be located in the installation pipeline, limit structure connects the rupture disk body and is used for restricting the rupture disk body and removes. The first limiting is accomplished to rupture disk structure utilization disk body and lower disk body, can fully restrict rupture disk body axial displacement, but the rupture disk body still appears vibrations skew in the circumference easily still, therefore carries out further spacing to the rupture disk body through limit structure, improves the structural stability of rupture disk body.

Preferably, the limiting structure comprises an upper limiting hole and a lower limiting hole which are respectively formed in the end faces of the upper disc body and the lower disc body, the upper limiting hole is opposite to the lower limiting hole, a limiting column is clamped in the upper limiting hole and the lower limiting hole, and the limiting column penetrates through the rupture disc body. The limiting column penetrates through the rupture disc body, so that the limiting effect on the rupture disc body is achieved.

Preferably, the rupture disc body comprises an outer ring layer and a central blasting layer, wherein the outer ring layer contacts the upper disc body and the lower disc body, and the limiting column is arranged on the outer ring layer in a penetrating manner. The central blasting layer is generally of a multi-layer structure and is provided with crocodile teeth, so that overpressure damage protection is facilitated; the outer ring layer does not participate in contacting with the high-pressure molten salt, so that the outer ring layer is matched with the limiting column more stably, and the stability of the whole rupture disc body is guaranteed.

Preferably, a clamping notch is formed in the outer ring layer, and the limiting column penetrates through the clamping notch. The clamping notch is convenient for installing the limiting column.

Preferably, the limit posts are provided in plurality. The limiting posts can improve the limiting strength of the rupture disc body.

Preferably, the burst disc structure is provided with two. When the rupture disk structure sets up two, preceding rupture disk structure carries out the pressure release to the fused salt after fused salt superpressure, and fused salt impact effect disappears basically this moment, and the later rupture disk structure can carry out pressure protection operation according to pressure threshold more accurately.

Compared with the prior art, the overpressure protection device for the molten salt system at least comprises the following components

The beneficial effects are that:

According to the utility model, the rupture disc structure is installed through the installation pipeline, and then the first elbow, the transition pipeline and the second elbow are connected with the molten salt pipeline, so that the position of the rupture disc structure can be reasonably optimized, the first elbow, the transition pipeline and the second elbow are used for steering and buffering molten salt, the sudden impact of the molten salt on the rupture disc structure from the molten salt pipeline is avoided, the maximum threshold value set by the rupture disc structure is matched with the actual protectable molten salt pressure as much as possible, and the use effect and the service life are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of the construction of a rupture disk of the present utility model;

fig. 3 is a schematic structural view of a portion of the rupture disc structure of the present utility model.

Reference numerals:

The device comprises a mounting pipeline, a 2-rupture disc structure, a 21-upper disc body, a 22-lower disc body, a 23-rupture disc body, a 231-central blasting layer, a 232-outer ring layer, a 233-clamping notch, a 24-limiting structure, a 241-limiting column, a 3-first elbow, a 4-transition pipeline and a 5-second elbow.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", etc. are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, are merely for convenience of description and simplification of description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

As shown in fig. 1 to 3, the utility model provides an overpressure protection device for a molten salt system, which comprises a mounting pipeline 1, wherein a rupture disc structure 2 is arranged on the mounting pipeline, a first elbow 3 is arranged at the front side of the mounting pipeline 1, a transition pipeline 4 is connected with the first elbow 3, and a second elbow 5 is arranged at the front section of the transition pipeline 4; wherein the second bend 5 is used for switching on the molten salt pipeline.

In this embodiment, it should be noted that, in the whole molten salt system overpressure protection device, the explosion-proof piece structure 2 is installed through the installation pipeline 1, and then the molten salt pipeline is connected through the first elbow 3, the transition pipeline 4 and the second elbow 5, so that the position of the explosion-proof piece structure 2 can be reasonably optimized, the first elbow 3, the transition pipeline 4 and the second elbow 5 are used for steering and buffering molten salt, the molten salt is prevented from suddenly impacting the explosion-proof piece structure 2 from the molten salt pipeline, and the maximum threshold value set by the explosion-proof piece structure 2 is matched with the molten salt pressure which can be practically protected as much as possible, so that the use effect and the service life are improved.

Specifically, the rupture disc structure 2 includes the upper disc body 21 and the lower disc body 22 of fixing on the mounting pipeline 1, and the card is equipped with rupture disc body 23 and limit structure 24 between upper disc body 21 and the lower disc body 22, and in the mounting pipeline 1 was located to rupture disc body 23 interval, limit structure 24 connected rupture disc body 23 and is used for restricting rupture disc body 23 and removes.

In this embodiment, the first limit is completed by the upper disc 21 and the lower disc 22 in the rupture disc structure 2, so that the axial movement of the rupture disc body 23 can be sufficiently restricted, but the rupture disc body 23 is still prone to vibration deflection in the circumferential direction, so that the rupture disc body 23 is further limited by the limit structure 24, and the structural stability of the rupture disc body 23 is improved.

Specifically, the limiting structure 24 includes an upper limiting hole and a lower limiting hole respectively formed in end surfaces of the upper disc 21 and the lower disc 22, the upper limiting hole is opposite to the lower limiting hole, limiting columns 241 are clamped in the upper limiting hole and the lower limiting hole, and the limiting columns 241 penetrate through the rupture disc body 23.

In this embodiment, the limiting post 241 penetrates the rupture disk body 23, thereby realizing the limiting function on the rupture disk body 23.

Specifically, the rupture disc body 23 includes an outer ring layer 232 and a central burst layer 231, the outer ring layer 232 contacts the upper disc 21 and the lower disc 22, and a limiting post 241 is disposed on the outer ring layer 232.

In this embodiment, it should be noted that the central burst layer 231 generally has a multi-layer structure, and has crocodile teeth, so as to facilitate overpressure breakage protection; the outer ring layer 232 does not participate in contacting the high-pressure molten salt, so that the outer ring layer is matched with the limiting column 241 more stably, and the stability of the whole rupture disc body 23 is ensured.

Specifically, the outer ring layer 232 is provided with a clamping notch 233, and the limiting post 241 passes through the clamping notch 233.

In this embodiment, the detent notch 233 facilitates the installation of the limiting post 241.

Specifically, the stopper posts 241 are provided in plurality.

In the present embodiment, the plurality of stopper posts 241 can improve the stopper strength of the rupture disk body 23.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims (6)

1. The anti-overpressure protection device for the molten salt system is characterized by comprising a mounting pipeline, wherein a rupture disc structure is arranged on the mounting pipeline, a first elbow is arranged on the front side of the mounting pipeline, a transition pipeline is connected to the first elbow, and a second elbow is arranged on the front section of the transition pipeline; wherein,

The second elbow is used for connecting a molten salt pipeline.

2. The molten salt system overpressure protection device of claim 1, wherein the rupture disc structure comprises an upper disc body and a lower disc body which are fixed on the mounting pipeline, a rupture disc body and a limiting structure are clamped between the upper disc body and the lower disc body, the rupture disc body is arranged in the mounting pipeline in a spaced mode, and the limiting structure is connected with the rupture disc body and used for limiting movement of the rupture disc body.

3. The molten salt system overpressure protection device of claim 2, wherein the limiting structure comprises an upper limiting hole and a lower limiting hole which are respectively formed in the end faces of the upper disc body and the lower disc body, the upper limiting hole is opposite to the lower limiting hole, limiting columns are clamped in the upper limiting hole and the lower limiting hole, and the limiting columns penetrate through the rupture disc body.

4. The molten salt system overpressure protection apparatus of claim 3, wherein the rupture disk body comprises an outer ring layer and a central burst layer, the outer ring layer contacting the upper disc and the lower disc, the outer ring layer having the stopper post threaded thereon.

5. The molten salt system overpressure protection device of claim 4, wherein the outer ring layer is provided with a clamping notch, and the limiting column passes through the clamping notch.

6. The molten salt system overpressure protection apparatus of any one of claims 3 to 5, wherein the stopper post is provided in plurality.