CN204345012U - A kind of band grooved graphite rupture disk - Google Patents

Abstract

The utility model discloses a kind of band grooved graphite rupture disk, comprise rupture disk edge and rupture disk blast area, it is characterized in that: connected by an annular joint between described rupture disk edge and described rupture disk blast area, the external diameter of described annular joint and the difference of internal diameter are 3 ~ 5mm, the thickness of described annular joint is S1, the thickness of described rupture disk blast area is that S2, S1 and S2 meet following relation: 3S1≤S2≤8S1.One band grooved graphite rupture disk described in the utility model, easily process, the thickness requirement on machining accuracy of rupture disk blast area is low; Annular joint amount of finish few, thickness control accuracy is high, bursting pressure stablize, after explosion rupture disk blast area annularly joint monoblock come off, fragment is few, the amount of releasing is large.

Description

A kind of band grooved graphite rupture disk

Technical field

The utility model relates to a kind of safety installations, especially a kind of band grooved graphite rupture disk.

Background technique

Rupture disk is the important safety of pressurized container, pipeline.When pressurized container meets accident superpressure, it can explosion under the temperature and pressure of regulation, and relieving pressure, ensures the safety of people's life and national wealth.When the medium of protected system has severe corrosive, rupture disk material cannot select metallic material, and the nonmetallic material graphite generally selecting performance of being able to bear strong corrosion good manufactures rupture disk.

Graphite mould rupture disk generally uses graphite blank to be processed by turning or milling, by the residual thickness controlled blasting pressure of graphite rupture disk, therefore in order to ensure the stability of bursting pressure, thickness evenness and the coherence request of graphite rupture disk are strict, graphite basis is as brittle material and intensity own is lower, therefore the course of working of graphite mould rupture disk is very difficult, easily cause that rupture disk is out of shape, crackle is even broken, affect rupture disk performance or directly lost efficacy, when particularly processing heavy caliber graphite mould rupture disk, difficulty of processing is larger.Existing burst region is the graphite mould rupture disk of whole plane in addition, and when explosion, explosion form is irregular, produces a large amount of graphite scrap, and burst region may come off not exclusively, affects bore of releasing.

Model utility content

Easily cause that rupture disk is out of shape, crackle even breaks according to the existing graphite rupture disk course of working of above-mentioned proposition and explosion time the technical problem such as explosion out-of-shape, and provide a kind of band grooved graphite rupture disk.The technological means that the utility model adopts is as follows:

A kind of band grooved graphite rupture disk, described band grooved graphite rupture disk entirety is in the form of annular discs, comprise rupture disk edge and rupture disk blast area, described rupture disk edge is circular, and described rupture disk blast area is in the form of annular discs, is connected between described rupture disk edge and described rupture disk blast area by an annular joint, the external diameter of described annular joint and the difference of internal diameter are 3 ~ 5mm, the thickness of described annular joint is S1, and the thickness of described rupture disk blast area is that S2, S1 and S2 meet following relation:

3 S1≤S2≤8S1；

Due to S1 ≠ S2, so form groove on described band grooved graphite rupture disk, when explosion, described band grooved graphite rupture disk ruptures along described groove, and namely described band grooved graphite rupture disk is along described annular joint fracture.

Described S1 meets following relation:

$S1=\frac{\sqrt{256D^2+528P_b{D}^2}-16D}{264},$

Wherein, P _bfor the design bursting pressure of described band grooved graphite rupture disk, MPa (G);

D is the external diameter of described annular joint, mm; The external diameter of described annular joint equals the bore of releasing of described band grooved graphite rupture disk.

The height difference of the upper surface of described rupture disk blast area and the upper surface at described rupture disk edge is that H1, H1 meet following relation:

5mm≤H1≤10mm。

Compared with the prior art, one band grooved graphite rupture disk described in the utility model, easily process, the thickness requirement on machining accuracy of rupture disk blast area is low; Annular joint amount of finish few, thickness control accuracy is high, bursting pressure stablize, after explosion rupture disk blast area annularly joint monoblock come off, fragment is few, the amount of releasing is large.

The utility model extensively can be promoted in fields such as safety installationss for the foregoing reasons.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is a kind of plan view with grooved graphite rupture disk in embodiment of the present utility model.

Fig. 2 is the plan view of Fig. 1.

Wherein, 1, rupture disk edge, 2, annular joint, 3, rupture disk blast area.

Embodiment

As depicted in figs. 1 and 2, a kind of band grooved graphite rupture disk, described band grooved graphite rupture disk entirety is in the form of annular discs, comprise rupture disk edge 1 and rupture disk blast area 3, described rupture disk edge 1 is in circular, described rupture disk blast area 3 is in the form of annular discs, 2 are connected by an annular joint between described rupture disk edge 1 and described rupture disk blast area 3, the external diameter of described annular joint 2 and the difference of internal diameter are 3 ~ 5mm, the thickness of described annular joint 2 is S1, the thickness of described rupture disk blast area 3 is that S2, S1 and S2 meet following relation:

3 S1≤S2≤8S1；

Due to S1 ≠ S2, so form groove on described band grooved graphite rupture disk, when explosion, described band grooved graphite rupture disk ruptures along described groove, and namely described band grooved graphite rupture disk ruptures along described annular joint 2.

Described S1 meets following relation:

$S1=\frac{\sqrt{256D^2+528P_b{D}^2}-16D}{264},$

Wherein, P _bfor the design bursting pressure of described band grooved graphite rupture disk, MPa (G);

D is the external diameter of described annular joint 2, mm; The external diameter of described annular joint 2 equals the bore of releasing of described band grooved graphite rupture disk.

The height difference of the upper surface of described rupture disk blast area 3 and the upper surface at described rupture disk edge 1 is that H1, H1 meet following relation:

5mm≤H1≤10mm。

Embodiment 1

The nominal diameter DN=100mm of described band grooved graphite rupture disk, design bursting pressure is P _b=0.4MPa (G), design bursting temperature is 20 DEG C, the height difference H 1=10mm of the upper surface of described rupture disk blast area 3 and the upper surface at described rupture disk edge 1, outer diameter D=the 110mm of described annular joint 2, the external diameter of described annular joint 2 and the difference of internal diameter are 5mm, according to following formulae discovery:

$S1=\frac{\sqrt{256D^2+528P_b{D}^2}-16D}{264},$

Calculate the thickness S1=2.34mm of described annular joint 2 because 3 S1≤S2≤8S1, described in get S2=4 S1=9.36mm.

As depicted in figs. 1 and 2, when processing described trough of belt type graphite rupture disk, first process described band grooved graphite rupture disk according to H1, D and S2, requirement on machining accuracy is low;

The annular groove that a degree of depth is S2-S1=7.02mm is processed afterwards between described rupture disk edge 1 and described rupture disk blast area 3, thus the difference forming external diameter and internal diameter is 5mm and thickness is the annular joint 2 of S1=2.34mm, the thickness control accuracy of described annular joint 2 is high, bursting pressure is stablized, after explosion, described rupture disk blast area 3 comes off along described annular joint 2 monoblock, and fragment is few, the amount of releasing is large.

The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, all should be encompassed within protection domain of the present utility model.

Claims (3)

1. a band grooved graphite rupture disk, comprise rupture disk edge and rupture disk blast area, it is characterized in that: connected by an annular joint between described rupture disk edge and described rupture disk blast area, the external diameter of described annular joint and the difference of internal diameter are 3 ~ 5mm, the thickness of described annular joint is S1, the thickness of described rupture disk blast area is that S2, S1 and S2 meet following relation:

3 S1≤S2≤8S1。

2. one band grooved graphite rupture disk according to claim 1, is characterized in that: described S1 meets following relation:

$S1=\frac{\sqrt{{256D}^2+528P_6{D}^2}-16D}{264},$

Wherein, P _bfor the design bursting pressure of described band grooved graphite rupture disk, MPa (G);

D is the external diameter of described annular joint, mm.

3. one band grooved graphite rupture disk according to claim 1, is characterized in that: the height difference of the upper surface of described rupture disk blast area and the upper surface at described rupture disk edge is that H1, H1 meet following relation:

5mm≤H1≤10mm。