CN218321484U - Explosion-proof pressure relief device of RH vacuum furnace - Google Patents
Explosion-proof pressure relief device of RH vacuum furnace Download PDFInfo
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- CN218321484U CN218321484U CN202221274799.XU CN202221274799U CN218321484U CN 218321484 U CN218321484 U CN 218321484U CN 202221274799 U CN202221274799 U CN 202221274799U CN 218321484 U CN218321484 U CN 218321484U
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- pressure relief
- gland
- manhole
- sliding column
- explosion
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- 210000004907 gland Anatomy 0.000 claims abstract description 38
- 238000004880 explosion Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000002360 explosive Substances 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Images
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model relates to an anti-explosion pressure relief device of an RH vacuum furnace, which comprises a gland, a reset mechanism, a baffle, an L-shaped rotating arm, a fixed support arm and a small side pressure relief manhole, wherein the bottom surface of the gland is fixed with a first sealing gasket, the gland is pressed at the end part of the large top pressure relief manhole, two radially symmetrical sides of the gland are provided with round holes, and the gland is connected with the reset mechanism through the round holes; the reset mechanism comprises a sliding column, a support supporting plate and a spring, and the support supporting plate is fixed on the outer wall of the large top pressure relief manhole; the bottom end of the sliding column is fixedly connected with the supporting plate, and the top end of the sliding column penetrates through the gland and is connected with the nut; the spring is sleeved on the sliding column and is arranged between the nut and the gland; the outer wall of the top pressure relief large manhole is connected with a side pressure relief small manhole. The advantages are that: rational in infrastructure, adopt the binary channels pressure release, the big manhole of top pressure release, the little manhole of lateral part pressure release promptly, can satisfy the explosive force pressure release of different dynamics, avoid the internal plant to damage.
Description
Technical Field
The utility model belongs to RH vacuum furnace auxiliary device especially relates to an explosion-proof pressure relief device of RH vacuum furnace.
Background
Before molten steel is treated by the RH refining furnace, the interior of the vacuum chamber is baked and heated through the oxygen lance, so that the phenomenon that a large amount of cold steel is bonded during molten steel treatment and the molten steel temperature is reduced too much due to too low temperature in the vacuum furnace is avoided, and when the actual oxygen lance is baked, oxygen and coal gas jetted from the interior of the oxygen lance are mixed in the vacuum furnace and are ignited through a high-temperature environment in the vacuum chamber. The vacuum furnace system is in a relatively closed environment, and the explosion accident inside the vacuum furnace caused by insufficient combustion of coal gas occasionally happens in practical application. Explosion with different force can cause damage to vacuum system equipment in different degrees, and if larger explosion occurs in the production period of the vacuum furnace, the molten steel in the molten steel tank can be bounced out by huge explosive force, so that the consequences are not imagined, and serious potential safety hazards such as burning and scalding of the molten steel of personnel can be easily caused.
In order to release the explosive force generated during the internal explosion, an explosion-proof device is installed, the explosion-proof device shown in fig. 1 comprises a movable flange and a fixed flange, the movable flange and the fixed flange are pressed and sealed through a sealing ring, when the system is exploded inside, the explosive force in the system is larger than the gravity of the movable flange, the movable flange is lifted up, the explosive force in the system is released, and then the movable flange needs to be manually restored manually. In practice, most of the explosions will occur in the blanking system, and the large explosive force will cause the blanking pipeline to be damaged and cracked, and the electrical components inside the blanking system will be damaged. Patent application No.: 201620089465.3, which discloses an explosion-proof device for RH vacuum blanking system, which still has certain defects when in use, and firstly, the device does not work when small explosion occurs in the system; secondly, it is very inconvenient to manually reset after pressure is released due to explosion each time.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims at providing an anti-explosion pressure relief device of an RH vacuum furnace, which can timely release the explosive force caused by the insufficient combustion of coal gas during the baking of an oxygen lance of an RH refining furnace, and reduce the probability of accidents of personnel and equipment caused by explosion in a closed space.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
an anti-explosion pressure relief device of an RH vacuum furnace comprises a gland, a reset mechanism, a baffle, an L-shaped rotating arm, a fixed support arm and a small side pressure relief manhole, wherein a first sealing gasket is fixed on the bottom surface of the gland;
the reset mechanism comprises a sliding column, a supporting splint and a spring, and the supporting splint is fixed on the outer wall of the large manhole with the pressure relief at the top; the bottom end of the sliding column is fixedly connected with the supporting plate, and the top end of the sliding column penetrates through the gland and is connected with the nut; the spring is sleeved on the sliding column and is arranged between the nut and the gland;
the outer wall of the large top pressure relief manhole is connected with a small side pressure relief manhole, a second sealing gasket is fixed on the baffle, the baffle covers the end part of the small side pressure relief manhole, one end of the L-shaped rotating arm is hinged with the fixed support arm through a pin shaft, and the other end of the L-shaped rotating arm is fixedly connected with the baffle; the fixed support arm is fixedly connected to the outer wall of the lateral pressure relief manhole.
The spring is arranged between the upper gasket and the lower gasket, the lower gasket is abutted against the pressing cover, and the upper gasket is abutted against the nut.
The gland is characterized by further comprising a pressing plate, and the first sealing gasket is fixedly connected to the bottom surface of the gland through a bolt by the pressing plate.
Compared with the prior art, the beneficial effects of the utility model are that:
the anti-explosion pressure relief device of the RH vacuum furnace is reasonable in structure, double-channel pressure relief is adopted, namely a large top pressure relief manhole and a small side pressure relief manhole, so that the explosion pressure relief with different force levels can be realized, and the damage to internal equipment is avoided. Because the inside of the system is negative pressure during the RH production, the gland and the baffle are automatically sucked under the action of suction, and the RH vacuum degree is not influenced; on the contrary, when the interior of the blanking system explodes, the generated explosive force can blow the baffle or the baffle and the gland open no matter the explosive force, and the accumulated explosive gas is quickly discharged outside through the baffle and the gland, so that the explosive force is effectively released instantly, the accident potential can be eliminated, and the loss of personnel and equipment safety accidents caused by the explosion of the coal gas in the closed space is reduced to the maximum extent.
Drawings
Fig. 1 is a schematic structural diagram of an original explosion-proof device.
In fig. 1: 1-fixed flange 2-sealing ring 3-movable flange.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view showing a pressure relief state of the side pressure relief manhole.
Fig. 4 is a schematic view of the pressure relief state of the large top pressure relief manhole and the small side pressure relief manhole.
In fig. 2-4: 1-big top pressure relief manhole 2-support supporting plate 3-sliding column 4-first sealing gasket 5-gland 6-lower gasket 7-spring 8-upper gasket 9-nut 10-pressing plate 11-bolt 12-pin shaft 13-L-shaped rotating arm 14-fixed support arm 15-baffle 16-retainer ring 17-second sealing gasket 18-small side pressure relief manhole 19-locking bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
See fig. 2, an explosion-proof pressure relief device of RH vacuum furnace, including gland 5, canceling release mechanical system, baffle 15, L shape rocking arm 13, fixed support arm 14, the little manhole 18 of lateral part pressure release, 5 bottom surfaces of gland are fixed with sealed 4 that fills up, play gland 5 and the big manhole 1's of top pressure release sealed effect, gland 5 presses the tip at the big manhole 1 of top pressure release, the both sides of 5 radial symmetries of gland are equipped with the round hole, gland 5 passes through the round hole and is connected with canceling release mechanical system.
The resetting mechanism comprises a sliding column 3, a supporting plate 2 and a spring 7, wherein the supporting plate 2 is fixed on the outer wall of the large top pressure relief manhole 1; the bottom end of the sliding column 3 is fixedly connected with the supporting plate 2, and the top end of the sliding column penetrates through the gland 5 and is connected with the nut 9; the spring 7 is sleeved on the sliding column 3 and is arranged between the nut 9 and the gland 5; the resetting mechanism further comprises an upper gasket 8 and a lower gasket 6, a spring 7 is arranged between the upper gasket 8 and the lower gasket 6, the lower gasket 6 abuts against the gland 5, and the upper gasket 8 abuts against the nut 9. The gland 5 and the first sealing gasket 4 overcome the self gravity and the elasticity of the spring 7 through the sliding column 3 to realize the opening action between the gland 5 and the top pressure relief manhole 1.
The first sealing gasket 4 is fixed at the bottom of the gland 5 by adopting a pressing plate 10, and the first sealing gasket 4 is fixedly connected to the bottom surface of the gland 5 by the pressing plate 10 through a bolt 11.
The outer wall of the top pressure relief large manhole 1 is connected with a side pressure relief small manhole 18, a baffle 15 is fixedly connected with a second sealing gasket 17 through a locking bolt 19 and a retainer ring 16, the baffle 15 covers the end part of the side pressure relief small manhole 18, one end of an L-shaped rotating arm 13 is hinged with a fixed support arm 14 through a pin shaft 12, and the other end of the L-shaped rotating arm is fixedly connected with the baffle 15; the fixed arm 14 is fixedly connected to the outer wall of the lateral pressure relief manhole 18. The L-shaped rotating arm 13 drives the baffle 15 with the second sealing gasket 17 to rotate around the pin shaft 12 and the fixed support arm 14, so that the purpose of pressure relief is realized.
The anti-explosion pressure relief device of the RH vacuum furnace has two functions of releasing explosion force, wherein firstly, the baffle 15 on the side surface releases pressure independently, and secondly, the baffle 15 and the gland 5 release pressure simultaneously. Therefore, the device can perform targeted pressure relief protection according to the actual pressure inside a system in daily use, and has an automatic reset function.
When a less powerful explosion occurs inside the RH vacuum oven, the less explosive force will release the pressure through the lateral relief manholes 18, as shown in fig. 3. After releasing the pressure, the flap 15 is reset under the effect of gravity.
When a powerful explosion occurs inside the RH vacuum furnace, the pressure is released by the pressure of the spring 7 pushing up the gland 5 through the small side relief manhole 18 and the upper part of the side relief manhole, as shown in fig. 4. Meanwhile, the compression amount of the spring 7 can be adjusted according to actual requirements, and further quantitative explosion-proof effect is achieved. After releasing the pressure, the press cover is reset under the action of the spring and gravity.
The device can be arranged on the upper part of the outer cylinder of each alloy bin. In order to facilitate explosion-proof opening, the gland 5 with corresponding weight is manufactured according to actual conditions, the spring 7 is reset easily, and the resistance of the spring 7 is reduced.
Claims (3)
1. An anti-explosion pressure relief device of an RH vacuum furnace is characterized by comprising a gland, a reset mechanism, a baffle, an L-shaped rotating arm, a fixed support arm and a small side pressure relief manhole, wherein a first sealing gasket is fixed on the bottom surface of the gland;
the reset mechanism comprises a sliding column, a supporting splint and a spring, and the supporting splint is fixed on the outer wall of the large manhole with the pressure relief at the top; the bottom end of the sliding column is fixedly connected with the supporting plate, and the top end of the sliding column penetrates through the gland and is connected with the nut; the spring is sleeved on the sliding column and is arranged between the nut and the gland;
the outer wall of the large top pressure relief manhole is connected with a small side pressure relief manhole, a second sealing gasket is fixed on the baffle, the baffle covers the end part of the small side pressure relief manhole, one end of the L-shaped rotating arm is hinged with the fixed support arm through a pin shaft, and the other end of the L-shaped rotating arm is fixedly connected with the baffle; the fixed support arm is fixedly connected to the outer wall of the lateral pressure relief manhole.
2. The explosion-proof pressure relief device of an RH vacuum furnace as claimed in claim 1, further comprising an upper gasket and a lower gasket, wherein a spring is arranged between the upper gasket and the lower gasket, the lower gasket abuts against the gland, and the upper gasket abuts against the nut.
3. The explosion-proof pressure relief device of an RH vacuum furnace as claimed in claim 1, further comprising a pressure plate, wherein the pressure plate fixedly connects the first sealing gasket to the bottom surface of the gland through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221274799.XU CN218321484U (en) | 2022-05-26 | 2022-05-26 | Explosion-proof pressure relief device of RH vacuum furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221274799.XU CN218321484U (en) | 2022-05-26 | 2022-05-26 | Explosion-proof pressure relief device of RH vacuum furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218321484U true CN218321484U (en) | 2023-01-17 |
Family
ID=84865907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221274799.XU Active CN218321484U (en) | 2022-05-26 | 2022-05-26 | Explosion-proof pressure relief device of RH vacuum furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218321484U (en) |
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2022
- 2022-05-26 CN CN202221274799.XU patent/CN218321484U/en active Active
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