CN2358278Y - Molecular sealing device - Google Patents
Molecular sealing device Download PDFInfo
- Publication number
- CN2358278Y CN2358278Y CN 99225303 CN99225303U CN2358278Y CN 2358278 Y CN2358278 Y CN 2358278Y CN 99225303 CN99225303 CN 99225303 CN 99225303 U CN99225303 U CN 99225303U CN 2358278 Y CN2358278 Y CN 2358278Y
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- China
- Prior art keywords
- gas
- air
- cylinder body
- equipment
- outer cylinder
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- Expired - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a one-way gas sealing device which belongs to the safety isolating equipment, and is used for preventing air reversely flowing into the equipment. The one-way gas sealing device without any moving parts is composed of an air inlet channel, a middle cylinder body, an outer cylinder body and an air outlet channel. The utility model uses inert gas with density below that of the air as sealing gas, uses the density difference between the sealing gas and the air as well as maze-shaped flow channels in the equipment, thus achieves the purpose of preventing the air reversely flowing into the equipment with consumption of a small amount of sealing gas, and does not influence forward gas discharge.
Description
The utility model relates to a kind of unidirectional gas seal device, is specifically related to a kind of molecular sealer.
Molecular sealer is safety installation crucial in the torch facility.The torch facility is widely used in oil, petrochemical industry and chemical field, and this device is the safety vent facility of inflammable gas.Molecular sealer is arranged in the top near facility in the torch facility.The emptying of torch facility has discontinuity and Unpredictability, must take measures to prevent in the equipment of the reverse inflow torch of air facility from top to bottom at its emptying tempus intercalare, because if there is air in certain amount to flow in the equipment of torch facility, to in the equipment of torch facility, form inflammable mixture when running into inflammable gas emptying, and tempering even blast can take place in case light.Conventional measure is to keep a certain amount of inflammable gas or inert gas uninterruptedly to discharge in the torch facility, keeps the malleation in the equipment.But do a large amount of wastes that can cause inflammable gas and inert gas like this.
The purpose of this utility model provides a kind of molecular sealer, can only consume a spot of inert gas and reach the effect that same prevention air flows into the torch facilities and equipment.
Above-mentioned purpose of the present utility model realizes in the following manner: its feature of a kind of molecular sealer comprises that intake duct, middle cylindrical shell, outer cylinder body and air outlet channel are combined into the solid of rotation of dead in line, the outer cylinder body bottom is connected with intake duct, top is communicated with air outlet channel, and the outer cylinder body bottom is provided with liquid port and antifreeze vapor interface.
It is further characterized in that described middle cylindrical shell is a cup type tube body, and it tips upside down in outer cylinder body above the intake duct, and is fixed on intake duct and the outer cylinder body by gusset.
Working principle of the present utility model is: the gas flow of at first constructing a labyrinth-like in equipment makes gas necessary along from bottom to top in equipment, flow from bottom to top more from top to bottom, adopt molecular weight than the little inert gas of air as: nitrogen as sealing gas from the intake duct access arrangement, sealing gas is because buoyancy function is full of the top of equipment work section, air only may rely on molecular diffusion to enter like this, if the flow velocity that makes sealing gas on the diffusing surface is greater than molecular diffusion speed, can stop air to flow into, and only on the long-pending runner of same cross-sectional, keep flow velocity desired seal gas flow greater than molecular diffusion speed much smaller than keeping the needed inert gas flow of malleation in the runner.
Advantage of the present utility model is:
(1) the different designs by the labyrinth-like runner that utilize sealing gas and air density reach and only consume the effect that a spot of inert gas promptly stops the air diffusion infiltration.
(2), thereby equipment is reduced to minimum to the influence of the discharging of dropping a hint by the optimal design of labyrinth-like runner is reduced to minimum with the flow resistance coefficient of runner.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
Fig. 1: be cut-away view of the present utility model.
It comprises outer cylinder body 3, intake duct 6, middle cylindrical shell 5, air outlet channel 4 the utility model (seeing shown in Figure 1), and its profile is a solid of rotation, and the dead in line of outer cylinder body 3, intake duct 6, middle cylindrical shell 5, air outlet channel 4.
The cup of a back-off of middle cylindrical shell 5 outer appearances, in molecular sealer, constitute the labyrinth-like gas flow with intake duct 6, outer cylinder body 3, its inwall and intake duct 6 outer walls constitute top-down gas flow, and its outer wall and outer cylinder body 3 inwalls constitute gas flow from bottom to top.Middle cylindrical shell 5 is fixedlyed connected with intake duct 6, outer cylinder body 3 by gusset 7.
When the torch facility was dropped a hint discharging, emptying gas entered molecular sealer from intake duct 6, by flowing out from air outlet channel behind the labyrinth-like runner in the molecular sealer.When the torch facility does not have the emptying gas discharging, a small amount of sealing gas as: nitrogen enters molecular sealer from intake duct 6, air is from the air outlet channel 4 reverse molecular sealer that enter, because the density of sealing gas is less than the density of air, the sealed gas in runner top in middle cylindrical shell 5 inwalls and intake duct 6 outer walls formation occupies, the flow velocity of sealing gas is higher than molecular diffusion speed in this runner, just can stop air to enter.
Claims (2)
1, a kind of molecular sealer, its feature comprises that intake duct, middle cylindrical shell, outer cylinder body and air outlet channel are combined into the solid of rotation of dead in line, described outer cylinder body bottom is connected with intake duct, and top is communicated with air outlet channel, and the outer cylinder body bottom does not have liquid port and antifreeze vapor interface.
2, molecular sealer according to claim 1, cylindrical shell tips upside down on the intake duct top in the middle of the cup type that it is characterized in that being provided with in the outer cylinder body, and is fixed on intake duct and the urceolus by gusset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225303 CN2358278Y (en) | 1999-01-01 | 1999-01-01 | Molecular sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225303 CN2358278Y (en) | 1999-01-01 | 1999-01-01 | Molecular sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2358278Y true CN2358278Y (en) | 2000-01-12 |
Family
ID=34015199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99225303 Expired - Fee Related CN2358278Y (en) | 1999-01-01 | 1999-01-01 | Molecular sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2358278Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135274A (en) * | 2010-09-30 | 2011-07-27 | 南通海鹰机电集团有限公司 | Gas safe diffusion combustion device |
| CN104990080A (en) * | 2015-06-23 | 2015-10-21 | 河南万安油气设备工程有限公司 | Novel molecular sealer |
| CN106705078A (en) * | 2016-12-21 | 2017-05-24 | 河南万安油气设备工程有限公司 | Main barrel continuous elevated torch molecular sealer |
-
1999
- 1999-01-01 CN CN 99225303 patent/CN2358278Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135274A (en) * | 2010-09-30 | 2011-07-27 | 南通海鹰机电集团有限公司 | Gas safe diffusion combustion device |
| CN104990080A (en) * | 2015-06-23 | 2015-10-21 | 河南万安油气设备工程有限公司 | Novel molecular sealer |
| CN104990080B (en) * | 2015-06-23 | 2017-04-19 | 河南万安油气设备工程有限公司 | Molecular sealer |
| CN106705078A (en) * | 2016-12-21 | 2017-05-24 | 河南万安油气设备工程有限公司 | Main barrel continuous elevated torch molecular sealer |
| CN106705078B (en) * | 2016-12-21 | 2023-06-20 | 河南万安油气设备工程有限公司 | Main cylinder continuous type overhead torch molecule sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |