CN201568738U - Seal gas recycling device of expansion machine - Google Patents
Seal gas recycling device of expansion machine Download PDFInfo
- Publication number
- CN201568738U CN201568738U CN2009202782243U CN200920278224U CN201568738U CN 201568738 U CN201568738 U CN 201568738U CN 2009202782243 U CN2009202782243 U CN 2009202782243U CN 200920278224 U CN200920278224 U CN 200920278224U CN 201568738 U CN201568738 U CN 201568738U
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- China
- Prior art keywords
- gas
- liquid phase
- phase separator
- natural gas
- decompressor
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a seal gas recycling device of an expansion machine, which is applied to the exhaust gas recycling during natural gas cryogenic processing. A seal gas blow-down pipe connected with a turbine oil storage tank is connected with an inlet of a liquid phase separator; a natural gas outlet is formed at the upper part of the liquid phase separator, a constant pressure air release valve is connected onto a natural gas outlet pipe of the liquid phase separator, and a blow-down pipe is connected onto the constant pressure air release valve; an external gas supply pipe is connected onto a pipe between the natural gas outlet of the liquid phase separator and the constant pressure air release valve, and an external gas supply pipe is connected with an original gas supply pipe. The utility model has the benefits that, firstly, the device can recycle the seal natural gas of turbine expansion machine; secondly, by recycling the natural gas for sealing under the normal operation of the expansion machine, the effects of energy conservation and emission reduction are obvious and the economic benefits are remarkable; thirdly, the defects that the traditional expansion machine operates the natural gas for sealing, pressure enters the working cavity, and the air-aimed releasing is insufficient.
Description
Technical field
The utility model relates to the natural gas processing processing technology field, and particularly the waste gas in the rock gas deep cooling process utilizes again, is a kind of decompressor blanket gas recycle device.
Background technique
Decompressor is one of capital equipment of rock gas deep cooling, because its special mechanical structure, the gas that requires to enter decompressor all can expand by fluid director and active wheel, produces cold.But because active wheel is the parts of high speed rotating, casing is a static part, and cryogenic gas might leak outside by the casing gap.This will make the overall refrigerating effect of decompressor descend, and will increase cold damage simultaneously.In addition, cold leaks outside bearing oil is freezed, and causes mechanical failure.Therefore must adopt sealing reliably.
When gas stream during through seal clearance, pressure reduces gradually.The size of leakage rate depends on the size of seal clearance and the magnitude of pressure differential of two seal spacies.If seal space is many more, or the pressure in the outside is high more, and concerning each seal clearance both sides, pressure reduction is more little, and leakage rate also reduces.Therefore, seal arrangement is divided into two sections, feeds the wiper seal gas higher slightly than ambient pressure in the centre, pressure can be 0.05～0.10MPa (gauge pressure).Like this, can reduce the leakage rate of cryogenic gas on the one hand, reduce cold damage, also can prevent that the lubricant oil of bearing from infiltrating sealing part simultaneously, enter in the decompressor.The turbo-expander that present air separation facility is used generally all needs the blanket gas of passband pressure, enters in the decompressor in order to prevent lubricant oil, and before starting the decompressor oil pump, should first voltage supply power blanket gas.When shutting down, need after oil pump shuts down, just can stop wiper seal gas.As long as the rock gas of decompressor operation sealing usefulness will be with pressure to enter active chamber, discharge then and enter in the air, be example with day output 100,000 sides' decompressor: the sealing rock gas of leakage every day is just up to 1000 in many ways.
The model utility content
The purpose of this utility model is: a kind of decompressor blanket gas recycle device is provided, is guaranteeing under the situation that decompressor runs well that the rock gas that reclaims sealing usefulness is used.
The technical solution adopted in the utility model is: decompressor blanket gas recycle device, mainly form by decompressor, turbine oil storage tank, liquid phase separator, valve discharging gas under certain pressure, decompressor is connected with the sealing source gas line, and the sealing source gas line provides source of the gas for decompressor.Decompressor has pipeline to connect the turbine oil storage tank, and the relief opening of turbine oil storage tank is connected with the blanket gas blow-down pipe.It is characterized in that: the blanket gas blow-down pipe that the turbine oil storage tank connects is connected with the inlet of liquid phase separator.Gas outlet is arranged at the top at liquid phase separator, is connected with valve discharging gas under certain pressure on liquid phase separator gas outlet pipeline, is connected with blow-down pipe on the valve discharging gas under certain pressure.Gas supply line outside being connected with on the pipeline between liquid phase separator gas outlet and valve discharging gas under certain pressure, outer gas supply line is connected with former gas supply line.
The consumption in blanket gas every year is more than 400,000 sides, and water jacket furnace and regenerating furnace year air consumption about 500,000 sides.Guaranteeing under the situation that dilatant runs well, utilize the vertical separator of stopping using, insert this separator with giving off the rock gas that contains turbine machine oil, valve discharging gas under certain pressure is installed on the separator, Set pressure is 0.18MPa, the water supply blind roaster is made fuel gas with the regeneration oven after separating de-oiling, the fuel gas working pressure is 0.1-0.16MPa, sealing rock gas after separating is linked into the outlet end (the pressure regulator valve outlet pressure is decided to be 0.14MPa) of fuel gas pressure regulator valve, pressure regulator valve can replenish air feed automatically when the fuel gas consumption is higher than blanket gas, otherwise, pressure fixing valve was opened external emptying when blanket gas pressure surpassed 1.8MPa, guarantee decompressor stable operation, eliminated atmospheric pollution simultaneously.
The beneficial effects of the utility model: the utility model decompressor blanket gas recycle device, can carry out the recycling of turbo-expander sealing rock gas.Guaranteeing to reclaim the rock gas of sealing usefulness under the situation that decompressor runs well, effects of energy saving and emission reduction is obvious, remarkable in economical benefits.Overcome original as long as the rock gas of decompressor operation sealing usefulness will be with pressure to enter active chamber, then the deficiency that sky is discharged.
Description of drawings
Fig. 1 is the utility model decompressor blanket gas recycle device linkage structure schematic representation.
Among the figure, 1. decompressor, 2. turbine oil storage tank, 3. sealing source of the gas, 4. blanket gas emptying, 5. liquid phase separator, 6. separator inlet, 7. valve discharging gas under certain pressure, 8. blow-down pipe, 9. pressure gauge, 10. gas pressure regulating valve, 11. combustion gas liquid gas bags, 12. water jacket furnaces, 13. regenerating furnaces.
Embodiment
Embodiment 1: with a cover decompressor blanket gas recycle device is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model decompressor blanket gas recycle device is made up of decompressor 1, turbine oil storage tank 2, liquid phase separator 5, valve discharging gas under certain pressure 7, pressure gauge 9, gas pressure regulating valve 10, combustion gas liquid gas bag 11, water jacket furnace 12 and regenerating furnace 13.
Decompressor 1 is connected with sealing source gas line 3, and sealing source gas line 3 provides source of the gas for decompressor.Decompressor 1 has pipeline to connect turbine oil storage tank 2, and the relief opening of turbine oil storage tank 2 is connected with blanket gas blow-down pipe 4.
The blanket gas blow-down pipe 4 that turbine oil storage tank 2 connects is connected with the inlet of liquid phase separator 5.Gas outlet is arranged at the top at liquid phase separator 5, is connected with a valve discharging gas under certain pressure 7 on liquid phase separator 5 gas outlet pipelines, is connected with blow-down pipe 8 on the valve discharging gas under certain pressure 7.
Gas supply line outside being connected with on the pipeline between liquid phase separator 5 gas outlets and valve discharging gas under certain pressure 7, outer gas supply line is connected with former gas supply line.
Be connected with gas equipment water jacket furnace 12 and regenerating furnace 13 on the former gas supply line.Be connected with air feed equipment on the former gas supply line, air feed equipment is that the air supply pipe of combustion gas liquid gas bag 11 is connected with gas pressure regulating valve 10, and the other end of gas pressure regulating valve 10 is connected on the gas supply line, is fixed with pressure gauge 9 on gas supply line.
Claims (1)
1. decompressor blanket gas recycle device, mainly form by decompressor (1), turbine oil storage tank (2), liquid phase separator (5), valve discharging gas under certain pressure (7), decompressor (1) is connected with sealing source gas line (3), decompressor (1) has pipeline to connect turbine oil storage tank (2), and the relief opening of turbine oil storage tank (2) is connected with blanket gas blow-down pipe (4); It is characterized in that: the blanket gas blow-down pipe (4) that turbine oil storage tank (2) connects is connected with the inlet of liquid phase separator (5); Gas outlet is arranged at the top at liquid phase separator (5), is connected with valve discharging gas under certain pressure (7) on liquid phase separator (5) gas outlet pipeline, is connected with blow-down pipe (8) on the valve discharging gas under certain pressure (7); Gas supply line outside being connected with on the pipeline between liquid phase separator (5) gas outlet and valve discharging gas under certain pressure (7), outer gas supply line is connected with former gas supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782243U CN201568738U (en) | 2009-12-16 | 2009-12-16 | Seal gas recycling device of expansion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202782243U CN201568738U (en) | 2009-12-16 | 2009-12-16 | Seal gas recycling device of expansion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568738U true CN201568738U (en) | 2010-09-01 |
Family
ID=42661027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202782243U Expired - Lifetime CN201568738U (en) | 2009-12-16 | 2009-12-16 | Seal gas recycling device of expansion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568738U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322411A (en) * | 2013-07-16 | 2013-09-25 | 兖矿集团有限公司 | Chemical system stoppage protective device |
| CN103967538A (en) * | 2013-01-30 | 2014-08-06 | 中国石油天然气股份有限公司 | Expander sealing gas heating method |
| CN107084312A (en) * | 2017-04-05 | 2017-08-22 | 哈尔滨汽轮机厂有限责任公司 | A kind of Blast Furnace Gas Turbine nitrogen-sealed system |
| CN107269315A (en) * | 2017-07-31 | 2017-10-20 | 上海齐耀膨胀机有限公司 | Screw machine sealing system and the method that prevents seal failure for cryogenic media gas |
-
2009
- 2009-12-16 CN CN2009202782243U patent/CN201568738U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967538A (en) * | 2013-01-30 | 2014-08-06 | 中国石油天然气股份有限公司 | Expander sealing gas heating method |
| CN103967538B (en) * | 2013-01-30 | 2015-09-23 | 中国石油天然气股份有限公司 | Decompressor blanket gas heating means |
| CN103322411A (en) * | 2013-07-16 | 2013-09-25 | 兖矿集团有限公司 | Chemical system stoppage protective device |
| CN103322411B (en) * | 2013-07-16 | 2015-07-22 | 兖矿集团有限公司 | Chemical system stoppage protective device |
| CN107084312A (en) * | 2017-04-05 | 2017-08-22 | 哈尔滨汽轮机厂有限责任公司 | A kind of Blast Furnace Gas Turbine nitrogen-sealed system |
| CN107269315A (en) * | 2017-07-31 | 2017-10-20 | 上海齐耀膨胀机有限公司 | Screw machine sealing system and the method that prevents seal failure for cryogenic media gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |