CN204140885U - A kind of seal oil device of nitrogen compressor motor - Google Patents
A kind of seal oil device of nitrogen compressor motor Download PDFInfo
- Publication number
- CN204140885U CN204140885U CN201420461871.9U CN201420461871U CN204140885U CN 204140885 U CN204140885 U CN 204140885U CN 201420461871 U CN201420461871 U CN 201420461871U CN 204140885 U CN204140885 U CN 204140885U
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- Prior art keywords
- pneumatic tube
- valve
- compressor motor
- nitrogen compressor
- total
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 19
- 239000003921 oil Substances 0.000 description 58
- 238000007667 floating Methods 0.000 description 19
- 239000000314 lubricant Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Compressor (AREA)
Abstract
The seal oil device of nitrogen compressor motor, belong to the seal arrangement technical field of empty point workshop nitrogen compressor motor, technical problem to be solved is to provide a kind of good airproof performance, the seal arrangement of the nitrogen compressor motor that floating-ring seal was not easily lost efficacy, the technological scheme adopted: the first pneumatic tube is by the floating-ring seal conveying blanket gas of the first overflow hole to nitrogen compressor motor drive terminal, first pneumatic tube is provided with the first valve, second pneumatic tube is by the floating-ring seal conveying blanket gas of the second overflow hole to nitrogen compressor motor anti-drive end, second pneumatic tube is provided with the second valve, total pneumatic tube is to the first pneumatic tube and the second pneumatic tube conveying blanket gas, total pneumatic tube is provided with total valve and pressure gauge successively along blanket gas throughput direction, the utility model is applied to the sealing of nitrogen compressor motor.
Description
Technical field
A seal oil device for nitrogen compressor motor, belongs to the seal arrangement technical field of empty point workshop nitrogen compressor motor.
Background technique
Nitrogen compressor motor is the power equipment of the nitrogen compressor group in empty point workshop, adopts sliding bearing.Nitrogen compressor group fuel system is: motor, nitrogen compressor group share a petrol station, open one for being its fuel feeding by two oil pumps one, lubricant oil is respectively motor, variable-speed motor, nitrogen compressor low pressure (LP) cylinder, nitrogen compressor high-pressure cylinder fuel feeding after pump pressurization after completed cooling and filtration by oil cooler, oil strainer.
In long-term using process, find that there is the floating-ring seal 8 being used for sealed electric-motor 15 sliding bearing lubricating oil damages, motor 15 drive end and anti-drive end two ends are caused all to occur oil leak, lubricant oil and the serious conditions that overflows from overflow hole 14 of atomization oil smoke specifically, the hidden danger that level is large to the stable operation band of unit.
As shown in Figure 1, to the structure of floating-ring seal 8 sealing principle of floating-ring seal 8 be based upon in Elementary Fluid Mechanics, belongs to dynamic seal.Floating ring 12 is exactly be in rotating shaft 13, and two that are positioned at floating-ring seal 8 chamber have more closely spaced annulus with rotating shaft 13.Oil sealing is leaked after injecting floating-ring seal 8 chamber inside the inside floating ring in floating ring 12 gap He outside outer floating ring.Because rotor is in High Rotation Speed state, flow into the oil sealing in floating ring 12 gap, under the effect of running shaft, define the oil film with certain bearing capacity.Floating ring 12 lifts by this oil film on the one hand, makes to realize liquid lubrication between floating ring 12 and axle journal, thus alleviates friction, reduction wearing and tearing.On the other hand, because oil film is filled with whole floating ring 12 gap, so stop gas medium to leak outside, thus serve the effect of sealing.
The reason that floating-ring seal 8 was lost efficacy has several as follows:
1. from structure and the principle of floating-ring seal 8, there is direct relation in sealing effect and floating ring 12 gap, and leak from minimizing sealing oil, improve sealing effect, floating ring 12 gap reduces as far as possible, but the too little deterioration that can cause again floating ring 12 operating conditions in gap, causes floating ring 12 seize to occur; Floating ring 12 excesssive gap, dredge oil amount increases, and makes sealing oil, lubricant oil alters mutually, sealing oil run damage, dilution.The selection range in all floating ring 12 gaps is generally: interior floating ring radius clearance S=(0.0005 ~ 0.0010) D, outer floating ring radius clearance S=(0.001 ~ 0.0020) D, and wherein, D is floating ring nominal diameter, unit mm;
2. when lubricant oil flows into machine, pressure is high or lubricating oil temperature is high, and cause the stickiness of oil to decline, poor fluidity, makes lubricant oil channel in sealing oil, seal failure;
3. sealing oil quality is too poor, and viscosity does not reach required value, and mobility is too strong, and oil film is formed bad, and seal point dredge oil amount increases;
4. the sealing oil pump that operates breaks down, and sealing oil pressure is reduced, and seal oil flow reduces, and oil film is formed undesirable, and sealing oil, lubricant oil are contaminated, and even sealing oil is interrupted, and causes burning out;
5. due to assembly quality problem or damage parts during unit maintenance, make floating ring 12 stuck, form the oil film of band defect, make lubricant oil alter in people's sealing oil, sealing oil lost efficacy;
6. because device operation fluctuation is large, cause compressor flowrate to fluctuate frequent, also can affect the formation of floating-ring seal 8 oil film, make seal failure;
In the working procedure of long-time continuous, extremely may there is above-mentioned unfavorable condition in the floating-ring seal 8 of nitrogen compressor motor, thus finally cause floating-ring seal 8 to be lost efficacy, the situation that a large amount of lubricant oil and atomization oil smoke leak.Once floating-ring seal 8 was lost efficacy, just needed to change expensive floating-ring seal 8, added cost of production, also delayed the production work in workshop simultaneously.Lubricant oil also may leak in motor stator chamber simultaneously, the probability that the equipment of adding has an accident.
Model utility content
The seal arrangement of the nitrogen compressor motor that technical problem to be solved in the utility model is to provide a kind of good airproof performance, floating-ring seal was not easily lost efficacy.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts: a kind of seal oil device of nitrogen compressor motor, comprise the first pneumatic tube, second pneumatic tube, total pneumatic tube, first valve, second valve, total valve and pressure gauge, described first pneumatic tube is by the floating-ring seal conveying blanket gas of the first overflow hole to nitrogen compressor motor drive terminal, first pneumatic tube is provided with the first valve, described second pneumatic tube is by the floating-ring seal conveying blanket gas of the second overflow hole to nitrogen compressor motor anti-drive end, second pneumatic tube is provided with the second valve, described total pneumatic tube is to the first pneumatic tube and the second pneumatic tube conveying blanket gas, total pneumatic tube is provided with total valve and pressure gauge successively along blanket gas throughput direction.
Described blanket gas is chemical property torpescence, the nonreactive nitrogen of contact lubricated oil.
The material of described first pneumatic tube, the second pneumatic tube, total pneumatic tube all selects 0Cr18Ni9 stainless-steel pipe.
The material of described first valve, the second valve, total valve all selects 304 stainless steels.
Described manometric range is 0 ~ 0.16Mpa, and grade of accuracy is 1.5.
Compared to the prior art the utility model has following beneficial effect.
One, nitrogen passes through total pneumatic tube as blanket gas, first pneumatic tube, second pneumatic tube is entered the floating-ring seal gap location at motor internal two ends respectively by overflow hole, the adjustment pressure size at two ends is regulated respectively by the first valve and the second valve, the positive pressure of motor two ends blanket gas is made all to be greater than the lubricant oil of leakage and the pressure of atomization oil smoke, from reaching seal action, form gas-filled type labyrinth seal (labyrinth seal), lubricant oil and the sealing of atomization oil smoke envelope are died with rage in Seal cage, as this reduced a large amount of non-essential loss of lubricant oil, save the use amount of lubricant oil, also improve the operating environment of working zone simultaneously, make workshop more clean.
Two, the utility model is while greatly reducing oil leakage, it also avoid floating-ring seal and loses efficacy thus changed expensive floating-ring seal, saved cost of production; Avoid nitrogen compressor group parking maintenance, for the stable operation of the high load of manufacturing shop, low consumption, high production creates required condition.And also stop oil leak in motor stator chamber, reduce the probability had an accident.
Three, because lubricant oil is clean medium, its property indices directly affects the stable operation of unit, want described first pneumatic tube, the second pneumatic tube, the material of total pneumatic tube all selects 0Cr18Ni9 stainless-steel pipe, the material of described first valve, the second valve, total valve all selects 304 stainless steels, avoids carbon steel pipe line and valve enters lubricating oil system and pollution lubricating is oily.
Accompanying drawing explanation
Fig. 1 is the structural representation of floating-ring seal under prior art.
Fig. 2 is structural representation of the present utility model.
In figure, 1 is the first pneumatic tube, and 2 is the first valve, 3 is the second pneumatic tube, and 4 is the second valve, and 5 is total pneumatic tube, 6 is pressure gauge, and 7 is total valve, and 8 is floating-ring seal, 9 is motor, and 10 is the first overflow hole, and 11 is the second overflow hole, 12 is floating ring, 13 is rotating shaft, and 14 is overflow hole, and 15 is motor.
Embodiment
As Figure 1-Figure 2, a kind of seal oil device of nitrogen compressor motor, comprise the first pneumatic tube 1, second pneumatic tube 3, total pneumatic tube 5, first valve 2, second valve 4, total valve 7 and pressure gauge 6, described first pneumatic tube 1 carries blanket gas by the first overflow hole 10 to the floating-ring seal 9 of nitrogen compressor motor 9 drive end, first pneumatic tube 1 is provided with the first valve 2, described second pneumatic tube 3 carries blanket gas by the second overflow hole 11 to the floating-ring seal 8 of nitrogen compressor motor 9 anti-drive end, second pneumatic tube 3 is provided with the second valve 4, described total pneumatic tube 5 carries blanket gas to the first pneumatic tube 1 and the second pneumatic tube 3, total pneumatic tube 6 is provided with total valve 7 and pressure gauge 6 successively along blanket gas throughput direction.
Described blanket gas is chemical property torpescence, the nonreactive nitrogen of contact lubricated oil.
The material of described first pneumatic tube 1, second pneumatic tube 3, total pneumatic tube 5 all selects 0Cr18Ni9 stainless-steel pipe.
The material of described first valve 2, second valve 4, total valve 7 all selects 304 stainless steels.
The range of described pressure gauge 6 is 0 ~ 0.16Mpa, and grade of accuracy is 1.5.
Due to nitrogen, to have chemical property inactive, contact lubricated oil not reaction characteristics, and divide plant site easily to obtain at sky to select nitrogen comparatively suitable as blanket gas.
Leak the outlet pressure (0.8MPa) of lubrication oil condition and oil pump according to nitrogen compressor, the Stress control of blanket gas is advisable at about 0.1MPa, and need the pressure in good time changing blanket gas according to the actual leakage situation at scene.
Pressure due to low-pressure nitrogen is 0.4 ~ 0.5Mpa, much larger than the range of described pressure gauge 6, therefore during operation, entered the main valves 7 of motor 9 by slow switch low-pressure nitrogen, guarantee low-pressure nitrogen enter total valve 7 after pressure be less than the range of pressure gauge 6, to avoid damaging pressure gauge 6.
The utility model is after running through long time test, motor 9 leaks lubrication oil condition and obtains obvious control, leakage rate decreases more than 90%, and the working environment near motor 9 have also been obtained obvious improvement, and the working stability of nitrogen compressor runs and is significantly improved.
Claims (5)
1. the seal oil device of a nitrogen compressor motor, it is characterized in that: comprise the first pneumatic tube, second pneumatic tube, total pneumatic tube, first valve, second valve, total valve and pressure gauge, described first pneumatic tube is by the floating-ring seal conveying blanket gas of the first overflow hole to nitrogen compressor motor drive terminal, first pneumatic tube is provided with the first valve, described second pneumatic tube is by the floating-ring seal conveying blanket gas of the second overflow hole to nitrogen compressor motor anti-drive end, second pneumatic tube is provided with the second valve, described total pneumatic tube is to the first pneumatic tube and the second pneumatic tube conveying blanket gas, total pneumatic tube is provided with total valve and pressure gauge successively along blanket gas throughput direction.
2. the seal oil device of a kind of nitrogen compressor motor according to claim 1, is characterized in that: described blanket gas is chemical property torpescence, the nonreactive nitrogen of contact lubricated oil.
3. the seal oil device of a kind of nitrogen compressor motor according to claim 1, is characterized in that: the material of described first pneumatic tube, the second pneumatic tube, total pneumatic tube all selects 0Cr18Ni9 stainless-steel pipe.
4. the seal oil device of a kind of nitrogen compressor motor according to claim 1, is characterized in that: the material of described first valve, the second valve, total valve all selects 304 stainless steels.
5. the seal oil device of a kind of nitrogen compressor motor according to claim 1, it is characterized in that: described manometric range is 0 ~ 0.16Mpa, grade of accuracy is 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461871.9U CN204140885U (en) | 2014-08-16 | 2014-08-16 | A kind of seal oil device of nitrogen compressor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461871.9U CN204140885U (en) | 2014-08-16 | 2014-08-16 | A kind of seal oil device of nitrogen compressor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140885U true CN204140885U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420461871.9U Expired - Lifetime CN204140885U (en) | 2014-08-16 | 2014-08-16 | A kind of seal oil device of nitrogen compressor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204140885U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121372A (en) * | 2014-08-16 | 2014-10-29 | 山西潞安矿业(集团)有限责任公司 | Lubricating oil sealing device of nitrogen compressor motor |
| DE102014017261A1 (en) * | 2014-11-24 | 2016-05-25 | Eagle Burgmann Espey Gmbh | Carbon floating ring gasket for rotating waves |
| CN114923329A (en) * | 2022-06-01 | 2022-08-19 | 无锡银燕化工装备科技有限公司 | Positive-pressure multi-sealing mechanism of rake dryer |
-
2014
- 2014-08-16 CN CN201420461871.9U patent/CN204140885U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121372A (en) * | 2014-08-16 | 2014-10-29 | 山西潞安矿业(集团)有限责任公司 | Lubricating oil sealing device of nitrogen compressor motor |
| DE102014017261A1 (en) * | 2014-11-24 | 2016-05-25 | Eagle Burgmann Espey Gmbh | Carbon floating ring gasket for rotating waves |
| CN114923329A (en) * | 2022-06-01 | 2022-08-19 | 无锡银燕化工装备科技有限公司 | Positive-pressure multi-sealing mechanism of rake dryer |
| CN114923329B (en) * | 2022-06-01 | 2023-06-09 | 无锡银燕装备科技有限公司 | Positive pressure multi-sealing mechanism of rake dryer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |