CN217214163U - Inverted arch trough-type rupture disk safety device - Google Patents

Abstract

The utility model relates to an inverted arch trough of belt type rupture disk safety device, which comprises an upper clamp holder (1), an inverted arch trough of belt type rupture disk (2), a lower clamp holder (3), a lifting bolt (4), a bolt (5) and a connecting sheet (6); go up holder (1) and lower holder (3) be the loop configuration, the outer fringe sets up eyebolt (4), place between last holder (1) and lower holder (3) anti-arch groove of belt type rupture disc (2), go up holder (1) and lower holder (3) and make up into an organic whole through screw (5) and connection piece (6). Compared with the prior art, the utility model has the advantages of simple structure, long service life, sealing performance are good.

Description

Inverted arch trough-type rupture disk safety device

Technical Field

The utility model relates to a safety attachment technical field, concretely relates to anti-arch trough of belt type rupture disc safety device.

Background

Rupture disk safety devices are now widely used for overpressure protection of various equipment in nuclear power plants. Rupture disk safety is an emergency overpressure relief device driven by differential pressure and closed non-automatically, and is mainly used for protecting pressure vessels, pipelines or other closed systems from being damaged due to excessive overpressure or vacuum.

The type of a rupture disk safety device installed on a calandria container of a heavy water reactor unit of a nuclear power plant is an inverted arch knife rest type, and the rupture disk safety device has the following defects:

1. the inner hole of the upper clamp holder is welded with the blade, so that the structure is complex and the processing is difficult.

2. The blade needs to bear the impact force caused by the explosion of the rupture disk, so that the holder is frequently replaced, the service life of the product is short, and the normal operation of a nuclear power plant is influenced.

3. The sealing performance is poor, and the phenomenon of air leakage occurs for many times.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a nuclear power plant's heavy water reactor group calandria container is with anti-arch area cell type rupture disc safety device reduces the processing degree of difficulty.

The purpose of the utility model can be realized through the following technical scheme: an inverted arch groove type rupture disk safety device comprises an upper clamp holder, an inverted arch groove type rupture disk, a lower clamp holder, a lifting ring screw, a screw and a connecting sheet;

the upper clamp holder and the lower clamp holder are of annular structures, lifting bolts are arranged on the outer edges of the upper clamp holder and the lower clamp holder, the inverted arch groove type rupture disc is placed between the upper clamp holder and the lower clamp holder, and the upper clamp holder and the lower clamp holder are combined into a whole through bolts and connecting pieces.

Preferably, the diameter of the inner hole of the lower clamp is consistent with the diameter of the arch surface of the inverted arch grooved rupture disk.

Preferably, the lower holder is higher than the arch height of the inverted arch grooved rupture disk.

Preferably, a positioning flange is arranged on the lower clamp and comprises a slope;

go up the holder on be equipped with the constant head tank that matches with the locating flange, the constant head tank contains the slope, the locating flange can imbed in the constant head tank, realize going up the horizontal spacing of holder.

Further preferably, the outer diameter of the anti-arch groove-type rupture disk is matched with the positioning flange and comprises a slope, and the positioning flange can be embedded into the anti-arch groove-type rupture disk to realize horizontal limiting of the anti-arch groove-type rupture disk.

Still more preferably, the slope included in the positioning flange, the slope included in the positioning groove, and the slope included in the outer diameter of the reverse arch belt groove-type rupture disk are all 30 °.

Further preferably, the positioning flange is provided with a sealing rib.

Preferably, the outer edges of the upper holder and the lower holder are uniformly provided with corresponding threaded holes, screws are arranged in the threaded holes, and the screws on the upper holder are connected with the corresponding screws on the lower holder through connecting pieces.

Preferably, the inner hole diameter of the upper clamp is smaller than that of the lower clamp.

Preferably, the inverted arch groove type rupture disc is preformed with weakening grooves along the concave surface.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model adopts the inverted arch groove type rupture disk to replace an inverted arch knife rest type rupture disk, cancels the inner hole knife rest structure of the upper clamp holder, simplifies the design scheme, reduces the processing difficulty and saves the manufacturing cost;

2. the positioning flange of the lower clamp holder of the utility model is provided with the sealing convex rib, which can improve the sealing performance of the rupture disk safety device;

3. the utility model only needs to replace the rupture disk after overpressure blasting, does not need to replace the clamp holder, saves the replacement cost and shortens the material supply period;

4. the utility model has simple structure, long service life and good sealing performance;

5. the utility model discloses safety device as the safety device of nuclear power plant's heavy water reactor unit calandria container.

Drawings

Fig. 1 is a schematic view of the overhead structure of the anti-arch groove-type rupture disk safety device of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a left side view of the structure of FIG. 1;

fig. 4 is a schematic top view of the upper clamp holder of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 4;

FIG. 6 is a schematic top view of the inverted arch grooved rupture disk of the present invention;

FIG. 7 is a schematic cross-sectional view of FIG. 6;

FIG. 8 is a schematic top view of the lower clamp of the present invention;

FIG. 9 is a schematic view of the cross-sectional structure A-A of FIG. 8;

FIG. 10 is an enlarged partial schematic view of FIG. 9;

in the figure: 1 is an upper holder, 101 is an inner hole of the upper holder, 102 is a positioning groove, 2 is an inverted arch groove type rupture disk, 201 is an outer diameter of the rupture disk, 202 is an arch surface of the rupture disk, 203 is a weakening groove, 3 is a lower holder, 301 is an inner hole of the lower holder, 302 is a positioning flange, 303 is a sealing convex rib, 4 is an eyebolt, 5 is a bolt and 6 is a connecting sheet.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples.

Example 1

A safety device of an anti-arch belt groove type rupture disk for a tube bank container of a heavy water reactor unit of a nuclear power plant is shown in figures 1-3 and comprises an upper clamp 1, an anti-arch belt groove type rupture disk 2, a lower clamp 3, a lifting ring screw 4, a screw 5 and a connecting sheet 6. As shown in fig. 4-5 and 8-9, the upper and lower holders (upper holder 1 and lower holder 3) are of an annular structure, the inverted arch groove type rupture disc 2 having the structure shown in fig. 6-7 is placed between the upper and lower holders, the outer edges of the upper and lower holders are provided with lifting bolts 4, and the upper and lower holders are combined through connecting pieces 6 and bolts 5. The medium acts on the arch surface 202 of the anti-arch belt groove type rupture disk through the inner hole 301 of the lower holder, and when the acting force reaches the set burst pressure, the arch surface 202 of the anti-arch belt groove type rupture disk corresponding to the inner hole 301 of the lower holder unstably turns over, tears along the direction of the weakening groove 203 prefabricated on the concave surface and releases the pressure.

Example 2

A nuclear power plant heavy water reactor unit calandria container is with anti-arch belted groove type rupture disc safety device, includes lower holder 3, goes up holder 1, anti-arch grooved groove type rupture disc 2, eyebolt 4, connection piece 6, screw 5. The upper and lower holders are of annular structures, the inverted arch groove-shaped rupture disk 2 is placed between the upper and lower holders, the outer edges of the upper and lower holders are provided with lifting bolts 4, and the upper and lower holders are combined through connecting pieces 6 and bolts 5.

In this embodiment, the diameter of the lower holder inner hole 301 is the same as the diameter of the arch face 202 of the inverted arch fluted rupture disk, and the height of the lower holder 3 is higher than the arch height of the inverted arch fluted rupture disk 2.

In this embodiment, the lower holder 3 is provided with a positioning flange 302, the flange includes a 30 ° slope, the upper holder 1 is provided with a positioning groove 102 matched with the positioning flange 302, the positioning groove includes a 30 ° slope, the outer diameter 201 of the inverted arch belt groove type rupture disk is matched with the positioning flange 302, the outer diameter includes a 30 ° slope, the inverted arch belt groove type rupture disk 2 and the upper holder 1 can be embedded on the lower holder positioning flange 302, and horizontal limiting of the inverted arch belt groove type rupture disk 2 and the upper holder 1 is realized. Compare in the plane spacing, horizontal displacement when the anti-arch groove of belt trough type rupture disk 2 pressurized can be restricted better in the slope spacing, ensures rupture disk burst pressure's stability.

Example 3

A safety device of a rupture disk with a reverse arch belt groove type for a calandria container of a heavy water reactor unit of a nuclear power plant is disclosed, as shown in figure 10, a sealing convex rib 303 is arranged on a positioning flange 302 of a lower clamp 3, and the rest of the structure is the same as that of the embodiment 2. The width of the sealing convex rib 303 is about 4mm, the height of the sealing convex rib is about 0.15mm, after the inverted arch groove type rupture disk 2 is assembled with the upper clamp and the lower clamp and clamped by the flanges, the sealing convex rib 303 is embedded into the inverted arch groove type rupture disk 2, better sealing performance is generated, and helium leakage rate can be lower than 10-6cm ³ /s。

Example 4

A reverse arch belt trough type rupture disc safety device for a tube bank container of a heavy water reactor unit of a nuclear power plant is characterized in that threaded holes are uniformly distributed in the outer edges of an upper clamp holder and a lower clamp holder, and the upper clamp holder and the lower clamp holder are combined into a whole through a screw 5 and a connecting sheet 6. The outer edges of the upper clamp holder and the lower clamp holder are evenly provided with lifting ring screw holes which are combined with the lifting ring screws 4 to play a role in lifting. The upper holder bore 101 diameter is smaller than the lower holder bore 301 diameter. The rest of the structure is the same as in example 3.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims (10)

1. An anti-arch groove-type rupture disc safety device is characterized by comprising an upper clamp holder (1), an anti-arch groove-type rupture disc (2), a lower clamp holder (3), a lifting ring screw (4), a screw (5) and a connecting sheet (6);

go up holder (1) and lower holder (3) be the loop configuration, the outer fringe sets up eyebolt (4), place between last holder (1) and lower holder (3) anti-arch groove of belt type rupture disc (2), go up holder (1) and lower holder (3) and make up into an organic whole through screw (5) and connection piece (6).

2. An inverted-arch fluted rupture disc safety device according to claim 1, wherein the inner bore diameter of the lower holder (3) is the same as the dome diameter of the inverted-arch fluted rupture disc (2).

3. The inverted arch groove rupture disc safety device as set forth in claim 1, wherein the lower holder (3) is higher than the arch height of the inverted arch groove rupture disc (2).

4. The inverted arch grooved rupture disc safety device as set forth in claim 1, wherein the lower holder (3) is provided with a positioning flange, which contains a slope;

go up holder (1) on be equipped with the constant head tank that matches with the locating flange, the constant head tank contains the slope, the locating flange can imbed in the constant head tank, realize going up the horizontal spacing of holder (1).

5. The anti-arching slotted rupture disk safety device of claim 4, characterized in that the outer diameter of the anti-arching slotted rupture disk (2) is matched with a positioning flange, including a slope, and the positioning flange can be embedded into the anti-arching slotted rupture disk (2) to realize horizontal limiting of the anti-arching slotted rupture disk (2).

6. The inverted arch grooved rupture disc safety device according to claim 5, wherein the slope included in the positioning flange, the slope included in the positioning groove, and the slope included in the outer diameter of the inverted arch grooved rupture disc (2) are all 30 °.

7. The inverted arch slotted rupture disk safety device of claim 4, wherein the locating flange is provided with a sealing bead.

8. The inverted arch grooved burst disc safety device according to claim 1, wherein the outer edges of the upper holder (1) and the lower holder (3) are uniformly provided with corresponding threaded holes, screws (5) are arranged in the threaded holes, and the screws (5) on the upper holder (1) are connected with the corresponding screws (5) on the lower holder (3) through connecting pieces (6).

9. An inverted arch slotted rupture disc safety device as defined in claim 1, wherein the inner bore diameter of the upper holder (1) is smaller than the inner bore diameter of the lower holder (3).

10. An anti-cove slotted rupture disc safety device as defined in any of claims 1 to 9, wherein the anti-cove slotted rupture disc (2) is pre-formed with weakening slots along the concave surface.

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