CN110397740A - High-speed screw sealing device - Google Patents
High-speed screw sealing device Download PDFInfo
- Publication number
- CN110397740A CN110397740A CN201910733546.0A CN201910733546A CN110397740A CN 110397740 A CN110397740 A CN 110397740A CN 201910733546 A CN201910733546 A CN 201910733546A CN 110397740 A CN110397740 A CN 110397740A
- Authority
- CN
- China
- Prior art keywords
- oil
- region
- helixseal
- rotary shaft
- scraper ring
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000002828 fuel tank Substances 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 72
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000012208 gear oil Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Abstract
The present invention relates to a kind of high-speed screw sealing devices, by oil sealing bushing, oil scraper ring composition, the oil scraper ring installation is on the rotary shaft, the oil sealing bushing is mounted on tank bottoms, the oil sealing bushing inner hole surface cooperatively forms helixseal region A with spiral section in rotary shaft or the spiral section on oil scraper ring, the helixseal region A enters pumping gas pressure when rotary shaft rotates, oil storage tank is set among the oil sealing bushing, the oil scraper ring outer lower portion stretches out a circle annulus, cooperate with the oil storage tank of oil sealing bushing, form U-shaped oil storage region B, when rotary shaft high speed rotation, after the oil that splashes enters U-shaped oil storage region B, gradually accumulation forms filling liquid area, the pumping gas pressure of helixseal region A forces down liquid level on the left of U-shaped oil storage region B, right side liquid level is got higher, formed liquid level difference after with helixseal region A Pumping gas pressure balance, liquid level keeps dynamic stability, can separate that splashing that fuel tank internal is generated by high speed rotation is oily and gas mixture.
Description
Technical field
The present invention relates to a kind of spiral sealing devices for vertical and high-speed rotating machinery, especially a kind of to be used for vertical height
The high-speed screw sealing device of fast rotating machinery seal oil.
Background technique
Helixseal is to get on the bus to cut out helicla flute in rotating shaft surface, or get on the bus in auxiliary equipment bore area and cut out rotation direction
Opposite helicla flute generates pumping head in axis rotation, when pumping head balances each other with sealed medium pressure, thus
Prevent dielectric leakage.Helixseal is a kind of non-contact seal, has good sealing effect, long service life and is suitble to gas
The advantages of phase medium condition, is widely used in many apparatus for rotating such as steam turbine, pump, motor, compressor of oil-lubricated bearing.
By the retrieval to patent network and domestic and international related data, it is found that existing helixseal patent has focused largely on single-stage
The design of different tooth type structures helixseals improves.It is exemplified below coordinate indexing patent:
1, the composite tooth-shape labyrinth spiral sealing of Patent No. 200510071120.1, by threaded rotor and stator pack
At its main feature is that the thread tooth type of rotor and stator is combined by the flute profile of two kinds of different structure forms.It is single improving
Sealing effect is set to obtain certain raising on the basis of flute profile.
2, the spiral sealing compensation device of Patent No. 200520090986, the Patent equipment have rotation axis, spiral close
The structures such as the dynamic set and quiet set of sealing mechanism, its main feature is that the dynamic set of helixseal and quiet set end face are provided with block, and in block
Oily elastic sealing elements are installed again with the outer section of quiet set, to reach sealing effect.
3, the two-spiral negative pressure trap type oil seal of Patent No. 91229117, the patent have the identical spiral of two sections of rotation directions close
Seal section, the intermediate negative pressure trap for being equipped with pressure release aperture apparatus of two sections of sealings.Its main feature is that using leading portion helixseal section by sealing medium
Directed flow is become by turbulent flow, to improve whole sealing effect to a certain extent.
By the existing patented technology of analysis, it is found that current helixseal has the following problems:
1) it is smaller to adapt to the range of speeds, leakage phenomenon easily especially occurs in high speed；
2) when the external world there are other gas medium such as vapor, fuel tank can be entered since existing pressure difference passes through sealing
It is interior, damage oil product.
Summary of the invention
Lubricating oil is easy to appear when it is an object of the invention to overcome vertical and high-speed rotating machinery using general helixseal to seep
Leakage problem, and a kind of high-speed screw sealing device is provided.
The technical scheme is that a kind of high-speed screw sealing device, is made of oil sealing bushing, oil scraper ring, the gear
Oil ring is installed on the rotary shaft, and the oil sealing bushing is mounted on tank bottoms, spiral shell in the oil sealing bushing inner hole surface and rotary shaft
Spiral section in rotation section or oil scraper ring cooperatively forms helixseal region A, the helixseal region A when rotary shaft is rotated into
Enter pumping gas pressure, oil storage tank is set among the oil sealing bushing, and the oil scraper ring outer lower portion stretches out a circle annulus, with oil
The oil storage tank cooperation for sealing bushing, forms U-shaped oil storage region B, and when rotary shaft high speed rotation, the oil that splashes enters the U-shaped oil storage
After the B of region, gradually accumulation forms filling liquid area, and the pumping gas pressure of helixseal region A is by liquid level on the left of U-shaped oil storage region B
It forces down, right side liquid level is got higher, and forms the pumping gas pressure balance after liquid level difference with helixseal region A, and liquid level keeps dynamic
Stablize, splashing oil and gas mixture that fuel tank internal is generated by high speed rotation can be separated.
Further, oily dam is set on the outside of the oil sealing bushing, fuel tank internal liquid oil is stopped to be directly entered U-shaped oil storage region
B。
Further, the oil scraper ring top is tray type structure, and the lube shaft that can flow out oil-lubricated bearing is prevented to blocking
Only lubricating oil directly into or be reflected into U-shaped oil storage region B.
The beneficial effects of the present invention are:
The present invention passes through the mutual cooperation of oil scraper ring and oil sealing bushing, and one side oil scraper ring stops pressure oil vertically downward
Impact force simultaneously decomposes to radial direction, on the other hand forms U-shaped oil storage region, prevents ambient atmos from entering fuel tank, while in fuel tank
Rotating splashing oil, the gas mixture generated has good sealing function.The spiral sealing device is compact-sized, helixseal
Pumping gas pressure and U-shaped oil storage area liquid level form dynamic equilibrium, have to high speed or Variable Speed Rotating Machinery fuel tank preferable
Sealing effect.
Detailed description of the invention
Fig. 1 is high-speed screw schematic diagram of sealing device of the invention；
Fig. 2 is the high-speed screw schematic diagram of sealing device in the embodiment of the present invention.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiment of the present invention: the present embodiment before being with technical solution of the present invention
It puts and is implemented, give detailed embodiment and process, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 1, high-speed screw sealing device of the invention, is made of oil scraper ring 1 and bushing 2, wherein oil scraper ring 1 is pacified
Loaded in rotary shaft, bushing 2 is mounted on tank bottoms.The spiral section and 2 inner hole surface of bushing of oil scraper ring 1, form helixseal area
Domain A, when rotation, generate pumping gas pressure；Section 3 is stretched under oil scraper ring 1 and 2 oil groove of bushing forms U-shaped oil storage region B, works as rotary shaft
When high speed rotation, after the oil that splashes enters U-shaped oil storage region B, gradually accumulation forms filling liquid area, the pump of helixseal region A
Send gas pressure to force down liquid level on the left of U-shaped oil storage region B, right side liquid level is got higher, formed after liquid level difference with helixseal region A
Pumping gas pressure balance, liquid level keeps dynamic stability, can separate splashing oil that fuel tank internal is generated by high speed rotation with
Gas mixture.
Oily dam 4 is set on the outside of bushing 2, is the region You Ba C outside oily dam 4, as the oil fuel-displaced dam region C of height, U-shaped oil storage region
Oil is spilled over to fuel tank in B, and U-shaped oil storage region B or so liquid level forms liquid level difference balanced spiral and seals pumping pressure.
1 top of oil scraper ring is tray type structure, and there is downward slope region D, chamfered region D to stop vertical on the outside of oil scraper ring 1
Downward lubricating oil, prevent lubricating oil directly into or be reflected into U-shaped oil storage region B.
As shown in Fig. 2, spiral section 7 is arranged below in the rotary shaft that oil-lubricated bearing 6 connects, the spiral section 7 and bushing 2 it
Between form helixseal region A, oil scraper ring 1 is mounted on the spiral section upper end of rotary shaft, and bushing 2 is mounted on 5 bottom of fuel tank, fuel tank
Oil level F in 5 is lower than the upper end You Ba 3 of bushing, and the oil level top in fuel tank 5 is air-fuel mixture region E.
High-speed screw sealing device of the invention and normal spiral sealing are compared:
Rotating machinery (linear velocity is greater than 30m/s) sealed medium under high-speed condition is easy to appear splashing in fuel tank
Situations such as oil, gas mixture, the helixseal of conventional design will all fail or are unable to reach design effect.
Claims (3)
1. a kind of high-speed screw sealing device, is made of oil sealing bushing, oil scraper ring, it is characterised in that: the oil scraper ring is mounted on
In rotary shaft, the oil sealing bushing is mounted on tank bottoms, spiral section or gear oil in the oil sealing bushing inner hole surface and rotary shaft
Spiral section on ring cooperatively forms helixseal region A, and the helixseal region A enters pumping gas when rotary shaft rotates
Oil storage tank is arranged in pressure, the oil sealing bushing centre, and the oil scraper ring outer lower portion stretches out a circle annulus, the storage with oil sealing bushing
Oil groove cooperation, forms U-shaped oil storage region B, when rotary shaft high speed rotation, after the oil that splashes enters U-shaped oil storage region B, by
Gradually accumulation forms filling liquid area, and the pumping gas pressure of helixseal region A forces down liquid level on the left of U-shaped oil storage region B, right side liquid
Position is got higher, and is balanced after forming liquid level difference with the pumping gas pressure of helixseal region A, and liquid level keeps dynamic stability, can be every
The splashing oil and gas mixture that disconnected fuel tank internal is generated by high speed rotation.
2. high-speed screw sealing device according to claim 1, it is characterised in that: setting oil on the outside of the oil sealing bushing
Dam stops fuel tank internal liquid oil to be directly entered U-shaped oil storage region B.
3. high-speed screw sealing device according to claim 1, it is characterised in that: the oil scraper ring top is disc type knot
Structure, the lube shaft that oil-lubricated bearing can be flowed out to blocking, prevent lubricating oil directly into or be reflected into U-shaped oil storage region
B。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733546.0A CN110397740A (en) | 2019-08-09 | 2019-08-09 | High-speed screw sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733546.0A CN110397740A (en) | 2019-08-09 | 2019-08-09 | High-speed screw sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110397740A true CN110397740A (en) | 2019-11-01 |
Family
ID=68327810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910733546.0A Pending CN110397740A (en) | 2019-08-09 | 2019-08-09 | High-speed screw sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110397740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006022A (en) * | 2019-12-25 | 2020-04-14 | 刘光明 | Liquid pressure difference type vacuum dynamic sealing mechanism |
| CN114439943A (en) * | 2022-02-09 | 2022-05-06 | 沈阳工业大学 | Spiral sealing structure and compressor |
| NL2030221A (en) * | 2021-01-19 | 2022-11-29 | Zhejiang Int Maritime College | Design Method of Oil Seal Structure for Multi-Stage Double-Supported Pump |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB147600A (en) * | 1918-12-27 | 1921-08-11 | J A Heimberger Soehne | Liquid seal for rotating shafts |
| FR2621970A1 (en) * | 1987-10-20 | 1989-04-21 | Hebert Michel | Dynamic sealing device using a centrifugal body |
| US6343794B1 (en) * | 1999-10-01 | 2002-02-05 | Donald J. Brown | Lubricant seal having partition plate with gutter for drive motor gears and the like |
| CN1542286A (en) * | 2003-04-29 | 2004-11-03 | 上海鼓风机厂有限公司 | A helium blower fan |
| EP1531295A1 (en) * | 2003-11-12 | 2005-05-18 | United Technologies Corporation | Gas film hydraulic shaft seal |
| CN102606517A (en) * | 2011-01-21 | 2012-07-25 | 中国船舶重工集团公司第七〇四研究所 | Inner and outer combined double-spiral seal |
| CN202992172U (en) * | 2012-12-27 | 2013-06-12 | 南车株洲电机有限公司 | Anti-pollution inner oil seal component for traction motor |
| CN203476591U (en) * | 2013-09-26 | 2014-03-12 | 福建南电股份有限公司 | Oil mist spilling-resistant connecting structure between guide bearing cooling oil tank and high-speed main shaft |
| CN204175965U (en) * | 2014-10-23 | 2015-02-25 | 张建国 | A kind of liquid sealing device |
| DE102013113567A1 (en) * | 2013-12-05 | 2015-06-11 | Bizerba Gmbh & Co. Kg | labyrinth seal |
| CN105909800A (en) * | 2016-06-02 | 2016-08-31 | 山东钢铁股份有限公司 | Non-contact mechanical sealing device |
| CN210739371U (en) * | 2019-08-09 | 2020-06-12 | 中国船舶重工集团公司第七0四研究所 | High-speed spiral sealing device |
-
2019
- 2019-08-09 CN CN201910733546.0A patent/CN110397740A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB147600A (en) * | 1918-12-27 | 1921-08-11 | J A Heimberger Soehne | Liquid seal for rotating shafts |
| FR2621970A1 (en) * | 1987-10-20 | 1989-04-21 | Hebert Michel | Dynamic sealing device using a centrifugal body |
| US6343794B1 (en) * | 1999-10-01 | 2002-02-05 | Donald J. Brown | Lubricant seal having partition plate with gutter for drive motor gears and the like |
| CN1542286A (en) * | 2003-04-29 | 2004-11-03 | 上海鼓风机厂有限公司 | A helium blower fan |
| EP1531295A1 (en) * | 2003-11-12 | 2005-05-18 | United Technologies Corporation | Gas film hydraulic shaft seal |
| CN102606517A (en) * | 2011-01-21 | 2012-07-25 | 中国船舶重工集团公司第七〇四研究所 | Inner and outer combined double-spiral seal |
| CN202992172U (en) * | 2012-12-27 | 2013-06-12 | 南车株洲电机有限公司 | Anti-pollution inner oil seal component for traction motor |
| CN203476591U (en) * | 2013-09-26 | 2014-03-12 | 福建南电股份有限公司 | Oil mist spilling-resistant connecting structure between guide bearing cooling oil tank and high-speed main shaft |
| DE102013113567A1 (en) * | 2013-12-05 | 2015-06-11 | Bizerba Gmbh & Co. Kg | labyrinth seal |
| CN204175965U (en) * | 2014-10-23 | 2015-02-25 | 张建国 | A kind of liquid sealing device |
| CN105909800A (en) * | 2016-06-02 | 2016-08-31 | 山东钢铁股份有限公司 | Non-contact mechanical sealing device |
| CN210739371U (en) * | 2019-08-09 | 2020-06-12 | 中国船舶重工集团公司第七0四研究所 | High-speed spiral sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006022A (en) * | 2019-12-25 | 2020-04-14 | 刘光明 | Liquid pressure difference type vacuum dynamic sealing mechanism |
| NL2030221A (en) * | 2021-01-19 | 2022-11-29 | Zhejiang Int Maritime College | Design Method of Oil Seal Structure for Multi-Stage Double-Supported Pump |
| CN114439943A (en) * | 2022-02-09 | 2022-05-06 | 沈阳工业大学 | Spiral sealing structure and compressor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: Zhong Guo Address after: 200031 No. 10, Xuhui District, Shanghai, Hengshan Road Applicant after: No. 704 Research Institute of China State Shipbuilding Corp. Address before: 200031 No. 10, Xuhui District, Shanghai, Hengshan Road Applicant before: NO.704 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. Country or region before: Zhong Guo |
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| CB02 | Change of applicant information |