CN205260939U - From melting formula safety pressure relief device - Google Patents

Abstract

The utility model provides a from melting formula safety pressure relief device mainly solves pipeline under pressure, the unsafe problem of container. It is drilld on airtight cavity pressure -bearing lateral wall including the airtight cavity that has pressure, clog fusible metal or fusible alloy stuff in the drilling. Furtherly be provided with a baffle on the seal chamber outer wall in the drilling outside. The utility model discloses a set up fusible metal stopper, can form safe window, set up some safety protection measure in the outside of pressure release mouth simultaneously, prevent that the molten metal from spattering outward to hurt sb. 's feelings. The problem of expand tube has been avoided in the setting of pressure release mouth simultaneously.

Description

Self-melt safe pressure relief device

Technical field

The utility model relates to safety control technology field, specifically a kind of for having the pipeline of interior pressure, the self-melt safe pressure relief device of container.

Background technology

For the pressure-bearing device of metal material, its inside is if any each class I liquid I, gas and have the solid of thermal expansion character, in heating process, to exist pressure to raise, when the mechanical strength of the cavity that is heated is in the time that liquid, gas and the solid with thermal expansion character reach uniform temperature, voltage rise is high in it will cause cavity device to occur that profile bulging, weld seam part are pulled open even occurring cavity blast, have a strong impact on device operation and personal safety.

In actual applications, such device has the generality of use, as the element of inner filling heat transfer medium, assembly and double wall chamber samming termal conductor module etc., in application, raise by temperature or controls bad impact, will occur the danger of blast.

Conventional pressure vessel can by relief valve is set, to control container inner pressure controlled, but in the technical fields such as heat pipe, tiny pressure pipeline, because itself volume and diameter are less, be difficult to carry out the installation of relief valve, therefore the space that, relief valve is not installed.

Utility model content

The object of the invention is, utilize certain warm area to be connected from the also synchronous device of pressure release of fusing and the body of pressure-bearing device, raise and approach expansion or explosion time when temperature appears in pressure-bearing device, self-melt safe pressure relief device will pass through from molten mode, realize the pressure release of pressure-bearing device, reach safe object with this.

The technical scheme in the invention for solving the technical problem is:

Self-melt safe pressure relief device, comprises the airtight cavity with pressure, it is characterized in that,

On airtight cavity pressure-bearing sidewall, hole, filling fusible metal or fusible alloy charges in described boring.

Further, between described charges outside and sidewall outside, use brass to weld.

Further, described charges are the one in tin, indium, bismuth, lead, silver, lithium, sodium, potassium, rubidium, caesium, francium, gallium, thallium, polonium, gold-tin alloy, tin pewter, gun-metal, red brass, tin silver bismuth alloy, tin AI alloy, sn-ag alloy, SAC alloy, leypewter, rose metal, tin bismuth copper alloy, sn-bi alloy or tin-indium alloy.

Further, imbed in advance a heat-conducting metal silk in described charges, described heat-conducting metal silk two ends are run through charges and are extended to outside.

Further, on the seal chamber outer wall in described boring outside, be provided with a baffle plate.

Further, between described boring and charges, be also provided with a copper pipe.

Further, described copper pipe is bend pipe.

Further, described boring is the conical bore increasing gradually by lateral.

Further, on the sidewall in boring outside, be provided with a recovery approach, a valve is set on the duct wall of described recovery approach, the valve body of described valve is just to boring.

The beneficial effects of the utility model are:

By fusible metal plug is set, can form security window, at some safety prevention measures of arranged outside of pressure relief opening, prevent that motlten metal from spattering and hurting sb.'s feelings outward simultaneously.

The simultaneously setting of pressure relief opening, has avoided the problem of expand tube.

Brief description of the drawings

Fig. 1 is the cutaway view of embodiment mono-;

Fig. 2 is the cutaway view of embodiment five;

Fig. 3 is the malformation of Fig. 1;

Fig. 4 is the malformation of Fig. 2;

Fig. 5 is the schematic diagram of embodiment tri-, four.

Fig. 6 is the schematic diagram of embodiment tetra-.

Fig. 7 is the schematic diagram of embodiment six.

In figure: 1 pipeline or container, 2 meltable charges, 3 brass, 4 brass tubes, 5 heat-conducting metal silks, 5 ' micro heat pipe, 6 recovery approaches, 61 valves, 62 disks, 7 baffle plates.

Detailed description of the invention

As shown in Figure 1,

For be the tiny pipeline with pressure or container 1, its pressure release mode is improved, on the sidewall of pressure-bearing, hole 11, then filling metal or alloy charges in boring, form meltable charges 2, and use brass 3 to weld in outside, increase the bond strength between charges and boring, for example strong solder melted and be attached to pressure-bearing device outer surface, on strong solder fusing position, directly punching, to being communicated with pressure-bearing body cavity body, will be fused into deposite metal or alloy filling thing in hole. If reach the melt temperature value of these charges self in pipeline or container, relevant charges can melt automatically, ensure the safety of pressure-bearing device with this.

Above-mentioned fusible metal or alloy filling owner will comprise: tin, indium, bismuth, lead, silver, lithium, sodium, potassium, rubidium, caesium, francium, gallium, thallium, polonium, gold-tin alloy, tin pewter, gun-metal, red brass, tin silver bismuth alloy, tin AI alloy, sn-ag alloy, SAC alloy, leypewter, rose metal, tin bismuth copper alloy, sn-bi alloy, tin-indium alloy etc.

Above-mentioned pipeline and the pattern of container are with reference to figure 1 and Fig. 3.

Embodiment bis-

Be ferrous metal situation for pipeline or container, for example, the pressure-bearing device of carbon steel, stainless steel, as cannot with deposite metal or the direct welding of alloy filling thing, can adopt the strong solder of cast to carry out welding with carbon steel, stainless steel in advance, then keep being communicated with in the punching of brass welding position and with pressure-bearing device inner chamber, as Fig. 1, then deposite metal or alloy filling thing are dissolved in hole body.

Embodiment tri-

The poor heat conduction of some fusible metal or alloy filling thing itself, need to use supplementary means to help its melting, in the present embodiment, exactly such as, by imbed in advance heat-conducting metal silk 5, copper wire, a filamentary silver etc. in fusible metal or alloy filling thing, can melt local charges by wire, form a small gas channel, with reference to figure 5, in the time that high temperature gas flow passes through, gas channel can be rushed greatly rapidly, form large flow pressure release.

Embodiment tetra-,

For ensureing security performance, on the pipeline outside holing or container outer wall, be provided with a baffle plate 7, after pressure release air-flow is gone out, can impinge upon on baffle plate 7, form and impact, avoid producing danger, with reference to figure 5.

As a kind of replacement scheme, also can, by copper tube or brass tube bending, make out mouth down setting, avoid directly outwards going out, with reference to figure 6.

Embodiment five

In advance deposite metal or alloy filling thing are fills up in copper tube, brass tube 4, in the boring of pressure-bearing device matrix outer wall correct position, and a slug of copper tube, brass tube are entered in boring then to carry out welding, complete processing.

Above-mentioned pipeline and the pattern of container are with reference to figure 2 and Fig. 4.

Embodiment six

As Fig. 7, in some more dangerous occasions, for example hazardous chemical, wherein when pressure release, has strict demand to leaking, require pressure release gas out to reclaim, for this reason, in the present embodiment, the drilling design on pipeline or pressure vessel wall is the bell mouth shape inwardly increasing gradually, and in boring, fill fusible metal charges 2, form and fill effect. Because charges are wedge structure, so be not easy to occur obscission.

The thermal conductivity of meltable charges 2 difference to some extent, a micro heat pipe 5 ' is set vertically in this meltable filler, micro heat pipe diameter control is at several millimeters, and the two ends of micro heat pipe 5 ' can extend to both sides, in the time that the temperature in pipeline or pressure vessel sharply raises, inner heat can be delivered to meltable charges by micro heat pipe rapidly, like this, micro heat pipe can be under the effect of air pressure inside, take the lead in being rushed out, form a small gas channel, when high temperature gas flow passes through gas channel, meltable charges can be washed open rapidly, form passage, produce effect. be provided with a recovery approach in outside, the air-flow that pressure release produces is recovered.

On the duct wall of recovery approach 6; a valve 61 is set; wherein to be positioned at the part of recovery approach be a disk to this valve; disk 62 diameters are greater than bore diameter; form shutoff, valve is screw thread mounting means, and the outer end of valve 61 is handle; borehole sealing after pressure release can be lived by rotation, shut down reparation after maintaining low pressure operation a period of time.

Except the technical characterictic described in description, be the known technology of those skilled in the art.

Claims (9)

1. self-melt safe pressure relief device, comprises the airtight cavity with pressure, it is characterized in that,

On airtight cavity pressure-bearing sidewall, hole, filling fusible metal or fusible alloy filling in described boringThing.

2. self-melt safe pressure relief device according to claim 1, is characterized in that, in described fillingBetween beyond the region of objective existence side and sidewall outside, use brass to weld.

3. self-melt safe pressure relief device according to claim 1, is characterized in that, described chargesFor tin, indium, bismuth, lead, silver, lithium, sodium, potassium, rubidium, caesium, francium, gallium, thallium, polonium, gold-tin alloy,Tin pewter, gun-metal, red brass, tin silver bismuth alloy, tin AI alloy, sn-ag alloy, tinIn yellow gold, leypewter, rose metal, tin bismuth copper alloy, sn-bi alloy or tin-indium alloyA kind of.

4. self-melt safe pressure relief device according to claim 1, is characterized in that, described chargesIn imbed in advance a heat-conducting metal silk, described heat-conducting metal silk two ends run through charges and extend to outside.

5. self-melt safe pressure relief device according to claim 1, is characterized in that, in described boringOn the seal chamber outer wall in outside, be provided with a baffle plate.

6. self-melt safe pressure relief device according to claim 1, is characterized in that, in described boringAnd between charges, be also provided with a copper pipe.

7. self-melt safe pressure relief device according to claim 6, is characterized in that, described copper pipe isBend pipe.

8. self-melt safe pressure relief device according to claim 1, is characterized in that, described boring isBy the conical bore increasing gradually in lateral.

9. self-melt safe pressure relief device according to claim 1, is characterized in that, in boring outsideSidewall on be provided with a recovery approach, a valve is set on the duct wall of described recovery approach,The valve body of described valve is just to boring.