CN220956042U - Sealing structure for sealing end of shaft of gas pressurizer - Google Patents
Sealing structure for sealing end of shaft of gas pressurizer Download PDFInfo
- Publication number
- CN220956042U CN220956042U CN202323068435.3U CN202323068435U CN220956042U CN 220956042 U CN220956042 U CN 220956042U CN 202323068435 U CN202323068435 U CN 202323068435U CN 220956042 U CN220956042 U CN 220956042U
- Authority
- CN
- China
- Prior art keywords
- sealing
- gas
- shaft
- drainage tube
- pressurizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 239000007789 gas Substances 0.000 abstract description 39
- 238000000034 method Methods 0.000 abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a sealing structure for sealing the end of a shaft of a gas pressurizer, which comprises a sealing structure for sealing the end of the shaft of the gas pressurizer, wherein a cylindrical sealing box is arranged outside the shaft sealing end in a coating manner through a sealing ring, a drainage tube is arranged on the sealing box, and the drainage tube is communicated with a suction port pipeline of the gas pressurizer. The utility model discloses a current structural feature of pressurization machine is utilized to this patent, has increased secondary seal for axle head dry gas seal, appears process gas when dry gas seal piece inefficacy or nitrogen pressure is unstable and overflows, and gas passes through the drainage tube and gets into the system. Zero leakage of the process gas is effectively realized, and personal injury accidents caused by overflowed process gas to patrol or maintainers are avoided.
Description
Technical Field
The utility model relates to a sealing structure for sealing end of a shaft of a gas pressurizer.
Background
Roots blower is often used for conveying toxic, harmful, inflammable and explosive media, and requires a sealing system to be good in reliability, and long in sealing and leakage-free service life. The dry gas sealing structure is generally adopted, shallow grooves which are uniformly distributed are processed on the sealing rings, gas entering the shallow grooves is compressed during operation, a local high-pressure area is formed between the sealing rings, and the sealing surfaces are opened, so that the sealing can be realized during operation in a non-contact state. The dry gas is usually nitrogen, and the pressure of the nitrogen is controlled to be kept at a level slightly higher than the pressure of the sealed process gas (0.2-0.3 MPa) all the time, so that the dry gas has a blocking effect between the atmosphere and the process gas, and the blocking effect is the same as that of the original floating ring sealed oil. Thereby ensuring that the process gas does not leak to the atmosphere. However, the unstable fluctuation of the main pipe gas source pressure is large in the daily production process, and the gas backflow with the nitrogen pressure lower than the gas pressure suddenly appears in the unit operation process; the corrosion or the failure of the split surface seal of the dry gas seal rubber seal ring is easy to cause serious safety accidents caused by process gas overflow. Meanwhile, the actual consumption of sealing nitrogen of a single unit is 3Nm3/h too large in terms of energy consumption.
Disclosure of utility model
The utility model aims to provide a sealing structure for sealing the end of a shaft of a gas pressurizer, which can prevent process gas from leaking into the atmosphere and ensure personal safety.
The sealing structure comprises a sealing structure of a sealing end of a shaft of a gas pressurizer, wherein a cylindrical sealing box is arranged on the outer side of the sealing end of the shaft of the gas pressurizer in a covering mode through a sealing ring, a drainage tube is arranged on the sealing box, and the drainage tube is communicated with a suction port pipeline of the gas pressurizer.
The novel sealing form comprises three parts, namely a sealing box for cladding, a sealing element and a diffusing system. The seal box is different from the traditional seal mode, and the seal box adopts the whole cladding type seal to completely cover the easy leakage part, so that the leakage is changed into controllable. The sealing element adopts two elastic sealing rings to avoid leakage through the locking fixation of the sealing box. The diffusing drainage system refers to that the process gas leaked into the sealed cavity under abnormal conditions is originally returned into the suction port pipeline of the pressurizing machine through a diffusing pipeline (drainage tube) additionally arranged on the sealing box. The design of the shaft end sealing box is that the sealing box is designed into 1 semicircular box body with the diameter phi 450, a steel plate with the thickness delta=6 is adopted for bending, and the steel plate is connected with a blower base through bolts, so that a sealed box body is formed, and coke oven gas leaked from the shaft seal is sealed in the sealing box body. In order to ensure that the sealing box is tightly connected with the engine base, the corrosion-resistant silica gel plate is used for sealing between the sealing box and the contact positions of the engine base, the bearing seat and the like, so that the sealing tightness is ensured. And welding the sealing box, installing the sealing box on the shaft head part, opening a hole at the upper part of the sealing box, installing a drainage tube of DN25, butting with a suction port pipeline of the pressurizing machine, and enabling the process gas scattered in the sealing box to enter the negative pressure side of the suction port of the pressurizing machine.
The utility model discloses a current structural feature of pressurization machine is utilized to this patent, has increased secondary seal for axle head dry gas seal, appears process gas when dry gas seal piece inefficacy or nitrogen pressure is unstable and overflows, and gas passes through the drainage tube and gets into the system. Zero leakage of the process gas is effectively realized, and personal injury accidents caused by overflowed process gas to patrol or maintainers are avoided. The secondary sealing device is simple to manufacture and reform, the area leakage analysis of the pressurizing machine is reduced after the secondary sealing device is convenient to popularize and use, and the reliable effect of the operation environment is obvious.
Drawings
Fig. 1 is a schematic view of a partial cross-sectional structure of the present utility model.
Detailed Description
The sealing structure of the shaft end cap of the gas pressurizer comprises a shaft end cap 1 of the gas pressurizer, a cylindrical sealing box 3 is arranged on the outer side of the shaft end cap in a coating mode through a sealing ring 4, a drainage tube 2 is arranged on the sealing box 3, and the drainage tube 2 is communicated with a suction port pipeline of the pressurizer.
Claims (1)
1. The utility model provides a sealing structure of gas pressure machine axle end cap, includes gas pressure machine axle end cap, characterized by: a cylindrical sealing box is coated outside the shaft seal end through a sealing ring, a drainage tube is arranged on the sealing box, and the drainage tube is communicated with a suction port pipeline of the pressurizing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323068435.3U CN220956042U (en) | 2023-11-14 | 2023-11-14 | Sealing structure for sealing end of shaft of gas pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323068435.3U CN220956042U (en) | 2023-11-14 | 2023-11-14 | Sealing structure for sealing end of shaft of gas pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956042U true CN220956042U (en) | 2024-05-14 |
Family
ID=91016186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323068435.3U Active CN220956042U (en) | 2023-11-14 | 2023-11-14 | Sealing structure for sealing end of shaft of gas pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956042U (en) |
-
2023
- 2023-11-14 CN CN202323068435.3U patent/CN220956042U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |