KR20000007412U - Pressure Sensing Discharge Safety Mechanism - Google Patents

Abstract

The present invention relates to a pressure-sensitive discharge safety mechanism, and the O-ring in contact with the outer edge of the sealed gas outlet outlet formed on the side wall of the closed tank; A plate ring fitted to an inner circumference of the o-ring and supporting an inner circumferential surface of the o-ring as an outer circumferential surface; A safety plate laminated on the O-ring and the plate ring and covering the O-ring and the plate ring; A support ring including the safety plate therein but supporting an edge of the safety plate and having a plurality of through holes formed therein; And a fastening means installed on the side wall of the closed tank to press the support ring toward the closed tank to allow the safety plate to press the O-ring to seal the closed tank.

The pressure-sensitive discharge safety mechanism of the present invention made as described above is easy to manufacture and simple in structure by forming a safety plate having a conventional curved surface in a flat shape. In particular, since the pressing force of the safety plate applied to the sealed tank can be easily adjusted, it is not necessary to manufacture each mechanism corresponding to the size and capacity of the sealed tank, and as a single mechanism, it can be applied to the sealed tanks of various environments to realize reliable operation. Can be.

Description

Pressure Sensing Discharge Safety Mechanism

The present invention relates to a pressure-sensitive discharge safety mechanism, and more particularly, to increase the pressure inside the sealed tank so that the gas supplied in the sealed tank expands due to an abnormal environmental change in the tank so that the sealed tank does not explode. The present invention relates to a pressure-sensitive discharge safety mechanism configured to detect and generate a discharge port by an elevated pressure to discharge the internal gas in advance.

Pressure sensing discharge safety mechanisms have been widely used in closed tanks forming load switching devices. The pressure sensing discharge safety mechanism is a device that blocks the explosion of the entire sealed tank in advance by rupturing a predetermined part when the gas supplied inside the sealed tank increases abnormally due to the internal environment change. A safety plate is usually installed at the site to be ruptured in advance. The safety plate is installed to seal the discharge port formed on one side of the closed tank, it is ruptured according to the increase in the pressure inside to discharge the gas inside and to reduce the pressure by preventing a large explosion.

Conventional pressure-sensing ejection safety mechanisms were formed by forming a notch of a predetermined depth in advance in order to rupture the safety plate, and installing a separate blade at a position corresponding to the notch. The safety plate has a concave partial spherical shape inside the sealed tank, which is deformed under pressure and protrudes out of the sealed tank. That is, at the moment when the pressure of the closed tank increases and the safety plate is pressurized by the gas expansion pressure and protrudes outward, the blade fixed to the outside cuts the notch and discharges the gas into the cut incision. .

However, in the conventional pressure-sensitive discharge safety mechanism as described above, it is difficult to manufacture a safety valve of a partial separation type, and a notch having a predetermined depth must be formed on the safety plate, and a separate blade must be installed at a position corresponding to the notch. Difficult to manufacture and complicated structure. In particular, if the notch and the tip of the blade do not correspond correctly, even if the safety plate protrudes convexly, the notch is not cut, and the gas cannot be discharged, so that the risk of explosion of the sealed tank cannot be solved and the reliability of the device cannot be expected.

The present invention devised to solve the above object, applying a safety plate having a flat plate shape, and does not need to install a blade without forming a notch on the safety plate, the structure is simple and easy to manufacture, high pressure reliability of the device The purpose is to provide a discharge safety mechanism.

1 is a view schematically showing the configuration of a pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

2a and 2b is a view showing a plate ring and an o-ring and safety plate which is a part of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

Figure 3 is a perspective view showing a support ring which is a part of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

Figure 4 is a cross-sectional view schematically showing the assembled state of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

5a and 5b are schematic views for explaining the operation of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: airtight tank 12: airtight gas outlet

14: O ring 16: plate ring

18: Safety version 20: Border part

22: support ring 24: cover

26: through-hole 28: stud bolt

30: Pressing nut 32: Spacer

34: reinforcement 36: through hole

38: Push jaw 40: Space part

42: discharge outlet

In order to achieve the above object, the present invention, the O-ring contacting the outer edge of the closed gas outlet outlet formed on the side wall of the closed tank; A plate ring fitted to an inner circumference of the o-ring and supporting an inner circumferential surface of the o-ring as an outer circumferential surface; A safety plate laminated on the O-ring and the plate ring and covering the O-ring and the plate ring; A support ring including the safety plate therein but supporting an edge of the safety plate and having a plurality of through holes formed therein; It characterized in that it comprises a fastening means installed on the side wall of the closed tank to press the support ring to the closed tank side to allow the safety plate to press the O-ring to seal the closed tank.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic cutaway perspective view for explaining the configuration of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

As shown, the pressure-sensitive discharge safety mechanism according to the present embodiment is a mechanism that prevents the overall explosion of the pressure tank in advance by rupturing the local part first when the internal gas exceeds a predetermined pressure to discharge the gas, This is achieved by installing a safety plate 18 in the closed gas outlet 12 formed on one side wall of the pressure tank 10. The safety plate 18 preferably uses a thin metal plate.

In order to install the safety plate 18 in the closed tank 10, in this embodiment, an O-ring 14, a plate ring 16 for supporting the O-ring 14, and a safety plate 18. And a support ring 22 for pressing and supporting the safety plate 18, and a cover 24 is installed to be spaced apart from the support ring 22 by a predetermined distance.

First, a plurality of stud bolts 28 are fixed to an outer rim of a circumference formed by a closed gas discharge port 12 formed at one side wall of the pressure tank 10. Six stud bolts 28 are provided in this embodiment and are fixed to the outer wall of the pressure tank 10. The stud bolt 28 has a length sufficient to penetrate the through holes 26 and 36 formed in the support ring 22 and the cover 24 which will be described later. In this embodiment, the length of each stud bolt 28 is configured to be three long and three short, so that the three short stud bolts 28 penetrate only to the through hole 26 of the support ring 22, the relative Three stud bolts (28) elongated to extend through the support holes (22) and through holes (26, 36) of the cover (24) at the same time. In addition, the stud bolts 28 are fixed to the long and short bolts alternately arranged.

O-ring 14 is provided on the outer edge of the closed gas outlet 12. The O-ring 14 is installed in the rim of the closed gas outlet 12 is located in the interior of the space formed by each stud bolt 28, the material may be used for example ethylene propylene, depending on the conditions of use Hard O-rings or soft O-rings may be used. In addition, the thickness of the O-ring 14 is preferably applied differently depending on the use environment. That is, the O-ring applied to the high pressure sealed tank has a large thickness, and in the low pressure sealed tank, a relatively small thickness of the O-ring may be applied.

The plate ring 16 is installed on the inner circumference of the O-ring 14 so that the O-ring 14 can maintain a constant shape corresponding to the shape of the edge of the closed gas outlet 12. The plate ring 16 has a space portion 40 formed therein to have a shape of a donut, and the space portion 40 is reinforced with a reinforcing rod 34 to prevent deformation of the plate ring 16 and provide rigidity. do. This plate ring 16 is installed on the inner circumference of the o-ring 14 to provide the bearing force in the direction of arrow r of FIG. 2a to the inner circumferential surface of the o-ring 14 so that the o-ring 14 can maintain a circular shape. That is, the plate ring 16 supports the O-ring 14 by bringing the outer circumferential surface of the plate ring 16 into contact with the inner circumferential surface of the O-ring 14, thereby deforming the shape of the O-ring 14 due to the external force being applied. It is a member that prevents deformation. In addition, the thickness of the plate ring 16 is designed to be smaller than the thickness of the O-ring 14. This is for contact between the safety plate 18 and the O-ring 14 to be described later.

The O-ring 14 and the plate ring 16 located inside the O-ring 14 are located at the edge of the sealed gas outlet 12, the safety plate (top) of the O-ring 14 and the plate ring 16 18) is laminated. The safety plate 18 is a circular flat plate with a constant thickness and covers the O-ring 14 and the plate ring 16 by having the same diameter as the O-ring 14. Since the thickness of the O-ring 14 is greater than the thickness of the plate ring 16 as described above, the safety plate 18 is laminated in contact with the O-ring 14 while being spaced apart from the plate ring 16 to seal the gas outlet ( 12) will be sealed. As will be described later, the safety plate 18 is plastically deformed to the outside by the pressure of the gas in the closed tank 10 to form the discharge port, thereby opening the sealed gas outlet 12.

A support ring 22 is provided to pressurize the safety plate 18 to the closed tank 10 side. The support ring 22 is pressurized by a pressurizing nut 30 to be described later to press the safety plate 18 to the closed tank 10 side, and the safety plate 18 to be in close contact with the O-ring 14 to the closed tank 10. ) More sealed to the outside. The support ring 22 is formed with a plurality of through holes 26 through which a plurality of stud bolts 28 provided on the outer wall of the closed tank 10 passes.

The stud bolt 28 extends through each of the through holes 26 and is coupled to the press nut 30. When the pressure nut 30 is further tightened in a state in which the pressure nut 30 is coupled to each stud bolt 28, the pressure nut 30 approaches the sealed gas outlet 12, and the support ring 22 is a closed tank. Since the pressure is further pushed toward the outer wall surface of the 10, the pressing force of the O-ring 14 against the safety plate 18 is adjustable as the pressurizing nut 30.

Meanwhile, the pressure jaw 38 is formed at the inner circumferential portion of the support ring 22. The pressing jaw 38 is formed at a predetermined width and depth on one side of the inner circumferential surface of the support ring 22, and the support ring 22 includes the edge portion 20 of the safety plate 18 to the pressure nut 30. The safety plate 18 is supported and pressurized while being pressurized. As described above, the support ring 22 pressurizes the safety plate 18 because the press nut 30 moves forward while screwing the stud bolt 28 to push the support ring 22.

In addition, in the present embodiment, as described above, three stud bolts 28 of the six stud bolts 28 are short, and the other three stud bolts 28 are provided with a long length. Therefore, among the six stud bolts 28 passing through the support ring 22, the spacer 32 is fitted to the relatively long stud bolt 28, and the press nut 30 to the relatively short stud bolt 28. To combine immediately. The spacer 32 is a cylindrical mechanical element having a certain height that defines the separation distance of the cover 24 relative to the support ring 22.

The cover 24 is installed at a side of the support ring 22 spaced apart by a spacer 32. The cover 24 is separated from the closed tank 10 at high speed while the safety plate 18 is plastically deformed, or the discharge port 42 is generated while the safety plate 18 is plastically deformed to form the interior of the closed tank 10. When the gas is discharged at high speed, it is formed in the safety plate 18 side as a safety device provided so that the debris of the gas and the safety plate 18 does not fly directly from the closed tank 10 to the outside. In addition, three through-holes 36 are formed in the cover 24 so that the stud bolts 28 passing through the through-holes 36 are combined with the pressurized nuts 30, and the cover 24 is a spacer 32. It is installed spaced apart from the support ring 22 with a certain distance therebetween.

Figure 2a, 2b is a cutaway perspective view showing the safety plate and O-ring and plate ring installed in the pressure-sensitive discharge pressure mechanism according to an embodiment of the present invention.

Referring to the drawings, it can be seen that the thickness of the plate ring 16 installed on the inner circumferential surface of the O-ring 14 is smaller than the thickness of the O-ring 14. In addition, as described above, in order to reinforce the rigidity of the plate ring 16, a reinforcing table 34 is provided across the inner space portion 40 of the plate ring 16. The shape of the reinforcing table 34 may be provided differently depending on the embodiment. In addition, the plate ring 16 evenly supports the O-ring 14 in the direction of the arrow r, so that the O-ring 14 maintains a circle corresponding to the shape of the outer circumferential surface of the plate ring 16.

Referring to FIG. 2B, since the thickness of the o-ring 14 is greater than the thickness of the plate ring 16, the safety plate 18 stacked on top does not contact the plate ring 16 but only the o-ring 14. It can be seen.

Figure 3 is a perspective view showing to show the shape of the pressing jaw 38 of the support ring 22 applied to the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

As shown, the support ring 22 applied to this embodiment is a ring having a certain height, and a plurality of through holes 26 are formed in the edge portion. The through hole 26 has a smooth inner circumferential surface to pass through the stud bolt 28, the linear movement is possible with respect to the stud bolt (28). In addition, the pressing jaw 38 formed on the inner circumferential surface of the support ring 22 is provided to press the safety plate 18 toward the O-ring 14 as described above, and is in contact with the edge portion 20 of the safety plate 18.

Figure 4 is a cross-sectional view showing the assembled shape of the pressure-sensitive discharge safety mechanism according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

Referring to the drawings, it can be seen that the cover 24 is spaced apart from the support ring 22 by a spacer 32.

The gas injected into the closed tank 10 has a constant pressure and presses the inner surface of the wall of the closed tank 10 in the direction of arrow a. Of these gas pressures, the gas that penetrates the space portion 40 of the plate ring 16 and applies the pressure to the safety plate 18 is blocked by the O-ring 14 and the safety plate 18, and the sealed tank 10 is closed. No leakage of gas occurs outside of.

The support ring 22 causes the pressure jaw 38 to pressurize and support the safety plate 18. Meanwhile, the support ring 22 is pressurized in the direction of the arrow c by the pressure nut 30 coupled with the stud bolt 28.

On the other hand, the support ring 22 before being tightened by the pressurizing nut 30 is spaced apart by a predetermined gap without contacting the outer wall surface of the closed tank 10. That is, since the thickness formed by the O-ring 14 and the safety plate 18 is greater than the depth d of the support jaw 38 of the support ring 22, the support ring 22 before being tightened by the pressure nut 30 is sealed. The gap is spaced apart from the outer wall of the tank 10 by a gap e. Therefore, as each pressurized nut 30 is screwed into the stud bolt 28, the gap e decreases, and the support ring 22 moves in the direction of the arrow c to further compress the O-ring 14 and to close the tank with a greater force. (10) is sealed.

As the support ring 22 moves toward the O-ring 14 by the pressure nut 30, the compressive force applied to the safety plate 18 interposed between the O-ring 14 and the pressure jaw 38 increases gradually. . That is, in proportion to the strength of the coupling of the pressurized nut 30 and the stud bolt 28, the safety plate 18 is inherited with a greater force between the O-ring 14 and the support ring 22, and thus the force Since this gas is greater than the force exerted in the direction of arrow a, the seal is maintained. Therefore, the pressurizing nut 30 is coupled to the stud bolt 28 in proportion to the pressure of the gas in the sealed tank 10 to provide a pressing force to the safety plate 18 to maintain the tightness of the closed tank 10.

5A and 5B are views schematically illustrating the operation of the pressure sensing discharge safety mechanism according to the embodiment of the present invention.

As shown, the pressure sensing discharge safety mechanism according to the present embodiment, the safety plate 18 is pushed out of the tank by the pressure of the gas inside the pressure tank 10, thereby generating a discharge port 42 to generate a pressure tank It is comprised so that gas may be discharged from (10). That is, when the pressure of the gas inside the closed tank 10 changes abnormally and the pressure rises, the safety plate 18 which has been subjected to the pressing force in the direction of the arrow a no longer resists the increased gas pressure and is in the direction of the arrow g. As the plastic deformation deteriorates, the edge portion of the safety plate 18 comes out in the direction of the arrow h between the O-ring 14 and the pressure jaw 38. In this state, any rim of the safety plate 18 is completely escaped from the pressure jaw 38 and the O-ring 14 by the pressure of the gas, and finally, the discharge port 42 is generated, and the gas is discharged through the discharge port 42 to the outside. As it exits in the direction of arrow i, the pressure in the closed tank 10 drops to eliminate the overall explosion factor.

Although the area of the discharge port 42 generated according to the pressure of the gas in the closed tank 10 may vary, there is little possibility that the safety plate 18 is separated from the O-ring 14 and the pressure jaw 38 at the same time as a whole. The gas ejected through the generated discharge port 42 hits the inner wall of the cover 24 and decreases in velocity and is released into the atmosphere.

The present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is possible.

The pressure-sensitive discharge safety mechanism of the present invention made as described above is easy to manufacture and simple in structure by forming a safety plate that forms a conventional curved surface. In particular, since the pressing force of the safety plate applied to the sealed tank can be easily adjusted, it is not necessary to manufacture each mechanism corresponding to the size and capacity of the sealed tank, and as a single mechanism, it can be applied to the sealed tanks of various environments to realize reliable operation. Can be.

Claims (6)

An o-ring 14 in contact with an outer edge of the closed gas outlet 12 formed on the side wall of the closed tank 10; A plate ring (16) inserted into an inner circumference of the o-ring (14) to support an inner circumferential surface of the o-ring as an outer circumferential surface; A safety plate (18) stacked on the o-ring (14) and the plate ring (16) and covering the o-ring (14) and the plate ring (16); A support ring 22 accommodating the safety plate 18 therein and supporting the edge of the safety plate 18 and having a plurality of through holes 26; It includes a fastening means installed on the side wall of the closed tank (10) to press the support ring 22 to the closed tank 10 to the safety plate 18 to press the O-ring 14 to seal the closed tank (10). Pressure sensing discharge safety mechanism, characterized in that. The pressure sensing discharge safety mechanism according to claim 1, further comprising a cover (24) spaced apart from the safety plate (18) by a predetermined distance. The method of claim 2, wherein the fastening means is fixed to the closed tank (10), the stud bolt 28 and the stud bolt (28) passing through the through hole 26 of the support ring 22, and extends a certain distance; Pressure sensing discharge safety mechanism, characterized in that it comprises a pressure nut (30) screwed to the). The support ring of claim 3, wherein the cover 24 is installed between the support ring 22 and the pressure nut 30, and the support ring 22 is installed between the support ring 22 and the cover 24. Pressure sensing discharge safety mechanism, characterized in that installed a predetermined distance apart from the (22). The pressure sensing discharge safety mechanism according to claim 1, wherein the plate ring (16) is provided with a reinforcing rod (34). The pressure sensing ejection safety mechanism according to claim 1, wherein the support ring (22) has a pressing jaw (38) having an approximately stepped shape on its inner circumferential surface to support the edge of the safety plate (18).