CN107084312A - A kind of Blast Furnace Gas Turbine nitrogen-sealed system - Google Patents
A kind of Blast Furnace Gas Turbine nitrogen-sealed system Download PDFInfo
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- CN107084312A CN107084312A CN201710218126.XA CN201710218126A CN107084312A CN 107084312 A CN107084312 A CN 107084312A CN 201710218126 A CN201710218126 A CN 201710218126A CN 107084312 A CN107084312 A CN 107084312A
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- nitrogen
- valves
- ring seal
- check
- carbon ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of Blast Furnace Gas Turbine nitrogen-sealed system, is related to the end gas sealing system of the Blast Furnace Gas Turbine unit of metallurgy industry, in order to solve the problem of Blast Furnace Gas Turbine unit coal gas is leaked out.The carbon ring seal body of the present invention is arranged on the outside of air sealing；Nitrogen interface is provided between carbon ring seal body and air sealing, multiple beveling carbocyclic rings are separately positioned on the contact position of carbon ring seal body and turbine rotor；Nitrogen adapter is connected with nitrogen interface；Nitrogen adapter is connected with check-valves, and check-valves is connected by pipeline with two stator servomotors：Check-valves is connected with stop valve；Stop valve is connected with ball valve；The entrance point of ball valve is connected with the gas outlet of pneumatic diaphragm control valve；The air inlet of pneumatic diaphragm control valve is connected with the port of export of ball valve；The entrance point of ball valve is connected with the gas outlet of check-valves；The air inlet of check-valves is passed through nitrogen.Have the beneficial effect that good sealing effect, it is to avoid the leaking of coal gas.
Description
Technical field
The present invention relates to the end gas sealing system of the Blast Furnace Gas Turbine unit of metallurgy industry.
Background technology
The blast furnace gas that initial blast furnace in metallurgical industry steel-making is produced is first passed through after cleaner, then by reducer unit, will
The pressure and temperature of blast furnace generation coal gas, which is dropped to after normal temperature and pressure, is fitted into storage container using or is transferred to corresponding coal gas use
The original pressure energy in family, wherein blast furnace gas and heat energy are wasted.In order to reclaim the energy lost in blast furnace gas, such as Fig. 1
It is shown, produce coal gas in blast furnace a and be directly over reducer unit c after cleaner b, or not and be the increase in one it is special
Turbine, is recovered energy by the special turbine, and the special turbine is normally referred to as：Blast Furnace Gas Turbine d；By Blast Furnace Gas Turbine
D drivings generator e is generated electricity.But the main component that blast furnace a produces coal gas is carbon monoxide, carbon monoxide is colorless and odorless
Inflammable and explosive gas, therefore, if CO gas is leaked from Blast Furnace Gas Turbine d, easily causes one
Carbon monoxide poisoning or explosion accident, therefore need to take special construction progress coal gas close at Blast Furnace Gas Turbine d two ends axle envelope
Envelope.Conventional Blast Furnace Gas Turbine d only adds the air seal structure of comb-tooth-type in the front and back end of unit, the air seal structure quilt in unit front end
Referred to as：Preceding air sealing, the air seal structure in unit rear end is referred to as：Air sealing afterwards；Preceding air sealing and rear air sealing are used for
Turbine rotor is sealed, prevents coal gas from leaking, but because the blast furnace a coal gas produced has certain pressure and temperature, therefore, preceding gas
Air sealing is merely capable of reducing gas leak amount after Feng Tihe, it is impossible to avoid leakage.
The content of the invention
The invention aims to solve the problem of Blast Furnace Gas Turbine unit coal gas is leaked out, it is proposed that Yi Zhonggao
Producer gas turbine nitrogen-sealed system.
A kind of Blast Furnace Gas Turbine nitrogen-sealed system of the present invention, including carbon ring seal body, No. two carbocyclic rings
Seal, multiple beveling carbocyclic rings, nitrogen adapter, No. two nitrogen adapters, check-valves, three No. two check-valves, three
Stop valve, a ball valve, No. two ball valves and pneumatic diaphragm control valve；
The outside of air sealing before a number carbon ring seal body is arranged on, No. two carbon ring seal bodies are arranged on rear air sealing
Outside；And provided with a nitrogen interface between a carbon ring seal body and preceding air sealing, No. two carbon ring seal bodies and rear sealing gland
Provided with No. two nitrogen interfaces between body；
The multiple beveling carbocyclic ring is separately positioned on a carbon ring seal body and the contact position of turbine rotor and No. two carbocyclic rings
The contact position of seal and turbine rotor；
One end of a number nitrogen adapter is connected with a nitrogen interface；One end of No. two nitrogen adapters and No. two nitrogen
Interface is connected；
The other end of a number nitrogen adapter is connected with the gas outlet of No. two check-valves, the other end of No. two nitrogen adapters
It is connected with the gas outlet of another No. two check-valves, the gas outlet of the 3rd No. two check-valves passes through pipeline and two stators respectively
The piston mouthful of servomotor is connected：
Gas outlet of the air inlet of three No. two check-valves respectively with three stop valves is connected；
The air inlet of three stop valves is connected with the port of export of a ball valve simultaneously；
The entrance point of a number ball valve is connected with the gas outlet of pneumatic diaphragm control valve；
The air inlet of the pneumatic diaphragm control valve is connected with the port of export of No. two ball valves；
The entrance point of No. two ball valves is connected with the gas outlet of a check-valves；
The air inlet of a number check-valves is passed through nitrogen.
A kind of operation principle of Blast Furnace Gas Turbine nitrogen-sealed system of the present invention is：Starting blast furnace unit
Before, nitrogen is first passed through at the air inlet of a check-valves, nitrogen passes sequentially through a check-valves, No. two ball valves, air bladders
Regulating valve, a ball valve, three stop valves and, three No. two check-valves be controlled behind the flow of nitrogen and direction, respectively
It is filled into the gap between the gap location between a carbon ring seal body and preceding air sealing, No. two carbon ring seal bodies and rear air sealing
At the piston of place and two stator servomotors；The nitrogen for the gap location being filled between a carbon ring seal body and preceding air sealing
For preventing coal gas from being revealed at preceding air sealing, the nitrogen for the gap location being filled between No. two carbon ring seal bodies and rear air sealing
For preventing coal gas from being revealed at rear air sealing, be filled into nitrogen at the piston of two stator servomotors be used to preventing coal gas from
Revealed at two stator servomotors.
The beneficial effects of the invention are as follows by setting up a carbon ring seal body, and in a carbon ring seal body and preceding air sealing
Between gap location be passed through nitrogen, it is ensured that the seal of preceding air sealing；By setting up No. two carbon ring seal bodies, and in No. two carbon
Gap location between ring seal and rear air sealing is passed through nitrogen, it is ensured that the seal of rear air sealing；It is dynamic in two stator oil
Nitrogen is passed through at the piston of machine, it is ensured that the air-tightness of two stator servomotors；So as to prevent Blast Furnace Gas Turbine unit coal gas
Leak；Adjusted by a check-valves, three No. two check-valves, three stop valves, a ball valve, No. two ball valves and air bladder
Save the coordination control of valve, it is ensured that gap location, No. two carbocyclic rings being filled with respectively between a carbon ring seal body and preceding air sealing are close
Gap location after Feng Tiyu between air sealing and at the piston of two stator servomotors nitrogen pressure, it is to avoid blast furnace gas
Turbine set coal gas leaks.
Brief description of the drawings
Fig. 1 is the structural representation of Blast Furnace Gas Turbine unit in background technology；
Fig. 2 is a kind of structural representation of Blast Furnace Gas Turbine nitrogen-sealed system described in embodiment one；
Fig. 3 is the structural representation of Blast Furnace Gas Turbine in embodiment one, wherein, 3 be inner casing, and 8 be fore bearing
Case, 9 be rear bearing housing；
Fig. 4 is the structural representation of a carbon ring seal body in specific implementation two；
Fig. 5 is the position relationship schematic diagram of wear ring and beveling carbocyclic ring and turbine rotor in embodiment four.
Embodiment
Embodiment one：Illustrate present embodiment, a kind of blast furnace coal described in present embodiment with reference to Fig. 2 and Fig. 3
Gas turbine nitrogen-sealed system, including carbon ring seal body 4, No. two carbon ring seal bodies 7, multiple beveling carbocyclic rings 12, a nitrogen
Gas adapter 10, No. two nitrogen adapters 11, check-valves d1, three No. two check-valves d5, three stop valve d4, a ball valves
D6, No. two ball valve d7 and pneumatic diaphragm control valve d2；
The outside of air sealing 5 before a number carbon ring seal body 4 is arranged on, No. two carbon ring seal bodies 7 are arranged on rear sealing gland
The outside of body 6；And provided with a nitrogen interface, No. two carbon ring seal bodies 7 between a carbon ring seal body 4 and preceding air sealing 5
Provided with No. two nitrogen interfaces between rear air sealing 6；Gap location between a carbon ring seal body 4 and preceding air sealing 5 is passed through
Nitrogen, it is ensured that the seal of preceding air sealing 5；Gap location between No. two carbon ring seal bodies 7 and rear air sealing 6 is passed through nitrogen,
It ensure that the seal of rear air sealing 6；
The multiple beveling carbocyclic ring 12 is separately positioned on a carbon ring seal body 4 and the contact position of turbine rotor 1 and No. two
The contact position of carbon ring seal body 7 and turbine rotor 1, beveling carbocyclic ring 12 is respectively used to ensure that a carbon ring seal body 4 turns with turbine
The zero clearance of son 1 and the zero clearance of No. two carbon ring seal bodies 7 and turbine rotor 1；
One end of a number nitrogen adapter 10 is connected with a nitrogen interface；One end of No. two nitrogen adapters 11 with No. two
Nitrogen interface is connected；
The other end of a number nitrogen adapter 10 is connected with No. two check-valves d5 gas outlet, No. two nitrogen adapters 11
The other end is connected with another No. two check-valves d5 gas outlet, and the 3rd No. two check-valves d5 gas outlet passes through pipeline respectively
It is connected with two stator servomotor f piston mouthful；Three No. two check-valves d5 be respectively used to prevent a nitrogen adapter 10, No. two
Nitrogen in nitrogen adapter 11 and the pipeline being connected with two stator servomotor f piston mouth flows backwards, it is ensured that the flow direction of nitrogen
It is unidirectional；
Gas outlet of the air inlet of three No. two check-valves d5 respectively with three stop valve d4 is connected；Three stop valves
D4 is respectively used to gap location, No. two carbon ring seal bodies 7 and rear air sealing 6 between a carbon ring seal body 4 and preceding air sealing 5
Between gap location and two stator servomotor f piston at be filled with nitrogen saturation when, cut-out nitrogen continue circulate；
The air inlet of three stop valve d4 is connected with the ball valve d6 port of export simultaneously, and a ball valve d6 is used to close
Close the inlet channel into three stop valve d4；
The entrance point of a number ball valve d6 is connected with pneumatic diaphragm control valve d2 gas outlet, pneumatic diaphragm control valve d2
Flow for controlling nitrogen：
The air inlet of the pneumatic diaphragm control valve d2 is connected with No. two ball valve d7 port of export, and No. two ball valve d7 are used to close
Close the inlet channel into pneumatic diaphragm control valve d2；
The entrance point of No. two ball valve d7 is connected with check-valves d1 gas outlet, and a check-valves d1 is used to prevent
Nitrogen into No. two ball valve d7 flows backwards；
The air inlet of a number check-valves d1 is passed through nitrogen.
In the present embodiment, sealing to Blast Furnace Gas Turbine d is completed by nitrogen, it is therefore prevented that coal gas leaks；And
And, it is necessary to substantial amounts of oxygen in steel-making industry, and the generation of by-product nitrogen can be attached while producing foreign flavour, therefore, this
Nitrogen needed for embodiment does not need special equipment to be extracted, and contributes to the recycling to byproduct.
Embodiment two：Illustrate present embodiment with reference to Fig. 4, present embodiment is to described in embodiment one
A kind of Blast Furnace Gas Turbine nitrogen-sealed system further limit, in the present embodiment, a carbon ring seal body 4 with
The structure of No. two carbon ring seal bodies 7 is identical, also, a carbon ring seal body 4 includes upper half carbon ring seal body 4-1 and lower half carbocyclic ring
Seal 4-2；
The upper half carbon ring seal body 4-1 and lower half carbon ring seal body 4-2 is fastened by split alignment pin and split
Bolt is fixed；
Bolt hole 4-3, bolt hole are provided with the upper half carbon ring seal body 4-1 and lower half carbon ring seal body 4-2
4-3 is respectively used to upper half carbon ring seal body 4-1 and lower half carbon ring seal body 4-2 being fixed on Blast Furnace Gas Turbine d outer shell 2
End.
In the present embodiment, by using split alignment pin and split fastening bolt to upper half carbon ring seal body 4-
1 and lower half carbon ring seal body 4-2 is fixed, the convenient replacing to chamferring carbocyclic ring 12.Also, using vertical flange bolt and hang down
Upper half carbon ring seal body 4-1 and lower half carbon ring seal body 4-2 are fixed by bolt hole 4-3 for straight flange nut, fixed
Effect it is good, cost is low, and it is convenient to change.
Embodiment three：Present embodiment is to a kind of Blast Furnace Gas Turbine nitrogen described in embodiment one
Sealing system is further limited, in the present embodiment, in addition to locking steel wire 4-4；
The locking steel wire 4-4 is embedded in inside beveling carbocyclic ring 12, and locking steel wire 4-4 is for holding beveling carbocyclic ring 12 and thoroughly
Flat turn 1 is in close contact.
In this implementation hair, because turbine rotor 1 is rotated with 3000rpm speed always, therefore, beveling carbocyclic ring 12 can not
That stops is worn, and sets up the Automatic-centripetal compensation that locking steel wire 4-4 ensure that beveling carbocyclic ring 12, beveling carbocyclic ring 12 is protected all the time
Hold and contacted with the zero clearance of turbine rotor 1, so as to reach the effect that Blast Furnace Gas Turbine d is fully sealed.Meanwhile, chamfer carbocyclic ring 12
Inner surface can be gradually thinned due to abrasion, it is necessary to carry out changing beveling carbocyclic ring 12 in desired run time, and then all the time
Keep Blast Furnace Gas Turbine d sealing.
Embodiment four：Illustrate present embodiment with reference to Fig. 5, present embodiment is to described in embodiment one
A kind of Blast Furnace Gas Turbine nitrogen-sealed system further limit, in the present embodiment, in addition to wear ring 4-5；
The wear ring 4-5 is arranged between beveling carbocyclic ring 12 and turbine rotor 1, and wear ring 4-5 is used to prevent rotation
The surface of turbine rotor 1 is chamfered carbocyclic ring 12 and worn and torn.
In the present embodiment, spraying abrasion-proof layer Cr on wear ring 4-5 surface2O3, wearing layer Cr2O3Thickness be
0.6mm-0.8mm wearing layers Cr2O3Hardness requirement be more than or equal to HRC70, the HRC represents Rockwell hardness, wearing layer Cr2O3
Hardness for increasing wear ring 4-5；By setting up wear ring 4-5, the surface of turbine rotor 1 of rotation is prevented to be chamfered carbocyclic ring 12
Abrasion, and then prevent from causing outside gas leakage to cylinder body because of the surface abrasion of turbine rotor 1, so as to ensure that present embodiment
A kind of described Blast Furnace Gas Turbine nitrogen-sealed system remains air-tightness, reduces the hair of intoxication accident and explosion accident
Raw rate.
Embodiment five：Present embodiment is to a kind of Blast Furnace Gas Turbine nitrogen described in embodiment one
Sealing system is further limited, in the present embodiment, in addition to No. three ball valve d3；
The port of export of No. three ball valve d3 is connected to entering for the ball valve d6 port of export and three No. two check-valves d5
Between gas port；No. three ball valve d3 entrance point be connected to No. two ball valve d7 entrance point and a check-valves d1 gas outlet it
Between.
In the present embodiment, by increasing No. three ball valve d3, a ball valve d6, No. two ball valve d7 and air bladder are used as
Regulating valve d2 alternate channel, while adding a kind of regulation control model again.
Embodiment six：Present embodiment is to a kind of Blast Furnace Gas Turbine nitrogen described in embodiment one
Sealing system is further limited, in the present embodiment, in addition to pipeline pump；
The pipeline pump is arranged at check-valves d1 air inlet.
In the present embodiment, by increasing pipeline pump, it is ensured that be passed through nitrogen at two stator servomotor f piston mouthful
Pressure and guarantee Blast Furnace Gas Turbine d cylinder bodies both sides are passed through the pressure of nitrogen, so as to reach sealed to Blast Furnace Gas Turbine d
Effect.
Claims (6)
1. a kind of Blast Furnace Gas Turbine nitrogen-sealed system, it is characterised in that including a carbon ring seal body (4), No. two carbocyclic rings
Seal (7), multiple beveling carbocyclic rings (12), nitrogen adapter (10), No. two nitrogen adapters (11), check-valves (d1),
Three No. two check-valves (d5), three stop valves (d4), a ball valve (d6), No. two ball valves (d7) and pneumatic diaphragm control valve
(d2)；
A number carbon ring seal body (4) is arranged on the outside of preceding air sealing (5), gas after No. two carbon ring seal bodies (7) are arranged on
Seal the outside of body (6)；And provided with a nitrogen interface, No. two carbocyclic rings between a carbon ring seal body (4) and preceding air sealing (5)
Provided with No. two nitrogen interfaces between seal (7) and rear air sealing (6)；
The multiple beveling carbocyclic ring (12) is separately positioned on the contact position and two of a carbon ring seal body (4) and turbine rotor (1)
The contact position of number carbon ring seal body (7) and turbine rotor (1)；
One end of a number nitrogen adapter (10) is connected with a nitrogen interface；One end of No. two nitrogen adapters (11) with No. two
Nitrogen interface is connected；
The other end of a number nitrogen adapter (10) is connected with the gas outlet of No. two check-valves (d5), No. two nitrogen adapters (11)
The other end be connected with the gas outlet of another No. two check-valves (d5), the gas outlet of the 3rd No. two check-valves (d5) leads to respectively
Piping is connected with the piston mouthful of two stator servomotors (f)；
Gas outlet of the air inlet of described three No. two check-valves (d5) respectively with three stop valves (d4) is connected；
The air inlet of three stop valves (d4) is connected with the port of export of a ball valve (d6) simultaneously；
The entrance point of a number ball valve (d6) is connected with the gas outlet of pneumatic diaphragm control valve (d2)：
The air inlet of the pneumatic diaphragm control valve (d2) is connected with the port of export of No. two ball valves (d7)；
The entrance point of No. two ball valves (d7) is connected with the gas outlet of a check-valves (d1)；
The air inlet of a number check-valves (d1) is passed through nitrogen.
2. a kind of Blast Furnace Gas Turbine nitrogen-sealed system according to claim 1 a, it is characterised in that carbocyclic ring
Seal (4) is identical with the structure of No. two carbon ring seal bodies (7), also, a carbon ring seal body (4) includes upper half carbon ring seal
Body (4-1) and lower half carbon ring seal body (4-2)；
The upper half carbon ring seal body (4-1) and lower half carbon ring seal body (4-2) are fastened by split alignment pin and split
Bolt is fixed；
Bolt hole (4-3) is provided with the upper half carbon ring seal body (4-1) and lower half carbon ring seal body (4-2).
3. a kind of Blast Furnace Gas Turbine nitrogen-sealed system according to claim 1, it is characterised in that also including locking steel
Silk (4-4)；
It is internal that the locking steel wire (4-4) is embedded in beveling carbocyclic ring (12).
4. a kind of Blast Furnace Gas Turbine nitrogen-sealed system according to claim 1, it is characterised in that also including wear ring
(4-5)；
The wear ring (4-5) is arranged between beveling carbocyclic ring (12) and turbine rotor (1).
5. a kind of Blast Furnace Gas Turbine nitrogen-sealed system according to claim 1, it is characterised in that also including No. three balls
Valve (d3)；
The port of export of No. three ball valves (d3) be connected to ball valve (d6) the port of export and three No. two check-valves (d5)
Between air inlet；The entrance point of No. three ball valves (d3) is connected to the entrance point of No. two ball valves (d7) and going out for No. one check-valves (d1)
Between gas port.
6. a kind of Blast Furnace Gas Turbine nitrogen-sealed system according to claim 1, it is characterised in that also including pipeline
Pump；
The pipeline pump is arranged at the air inlet of a check-valves (d1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218126.XA CN107084312A (en) | 2017-04-05 | 2017-04-05 | A kind of Blast Furnace Gas Turbine nitrogen-sealed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218126.XA CN107084312A (en) | 2017-04-05 | 2017-04-05 | A kind of Blast Furnace Gas Turbine nitrogen-sealed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107084312A true CN107084312A (en) | 2017-08-22 |
Family
ID=59615127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710218126.XA Pending CN107084312A (en) | 2017-04-05 | 2017-04-05 | A kind of Blast Furnace Gas Turbine nitrogen-sealed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084312A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150698A (en) * | 2017-12-25 | 2018-06-12 | 中国海洋石油集团有限公司 | Pneumatic diaphragm control valve executing agency diaphragm protection air source circuit |
| CN114215843A (en) * | 2021-11-25 | 2022-03-22 | 邯郸钢铁集团有限责任公司 | Method for reducing TRT thrust bearing temperature |
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| US3390525A (en) * | 1966-01-14 | 1968-07-02 | Escher Wyss Ag | Shaft-sealing device for turbomachines having a gaseous working medium heated in a nuclear reactor |
| JP2002323141A (en) * | 2001-04-26 | 2002-11-08 | Eagle Ind Co Ltd | Sliding part and manufacturing method therefor |
| CN2703167Y (en) * | 2004-04-08 | 2005-06-01 | 陕西鼓风机（集团）有限公司 | Carbocycle seal used for blast furnace gas energy recovery turbine apparatus shaft end |
| EP2085575A1 (en) * | 2008-02-01 | 2009-08-05 | Siemens Aktiengesellschaft | Combination of a brush seal with piston ring for large seal gaps |
| CN201568738U (en) * | 2009-12-16 | 2010-09-01 | 中国石油天然气股份有限公司 | Seal gas recycling device of expansion machine |
| CN102363821A (en) * | 2011-11-02 | 2012-02-29 | 思安新能源股份有限公司 | High speed blast furnace gas pressure turbine |
| CN203215284U (en) * | 2013-04-23 | 2013-09-25 | 上海宝闵工业气体有限公司 | Seal gas system of oxygen turbine |
| CN203488717U (en) * | 2013-08-30 | 2014-03-19 | 西安交通大学苏州研究院 | Carbon ring seal |
| CN103982246A (en) * | 2014-05-21 | 2014-08-13 | 中冶南方工程技术有限公司 | Ammonia water turbine sealing system taking nitrogen as seal medium |
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2017
- 2017-04-05 CN CN201710218126.XA patent/CN107084312A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3390525A (en) * | 1966-01-14 | 1968-07-02 | Escher Wyss Ag | Shaft-sealing device for turbomachines having a gaseous working medium heated in a nuclear reactor |
| JP2002323141A (en) * | 2001-04-26 | 2002-11-08 | Eagle Ind Co Ltd | Sliding part and manufacturing method therefor |
| CN2703167Y (en) * | 2004-04-08 | 2005-06-01 | 陕西鼓风机（集团）有限公司 | Carbocycle seal used for blast furnace gas energy recovery turbine apparatus shaft end |
| EP2085575A1 (en) * | 2008-02-01 | 2009-08-05 | Siemens Aktiengesellschaft | Combination of a brush seal with piston ring for large seal gaps |
| CN201568738U (en) * | 2009-12-16 | 2010-09-01 | 中国石油天然气股份有限公司 | Seal gas recycling device of expansion machine |
| CN102363821A (en) * | 2011-11-02 | 2012-02-29 | 思安新能源股份有限公司 | High speed blast furnace gas pressure turbine |
| CN203215284U (en) * | 2013-04-23 | 2013-09-25 | 上海宝闵工业气体有限公司 | Seal gas system of oxygen turbine |
| CN203488717U (en) * | 2013-08-30 | 2014-03-19 | 西安交通大学苏州研究院 | Carbon ring seal |
| CN103982246A (en) * | 2014-05-21 | 2014-08-13 | 中冶南方工程技术有限公司 | Ammonia water turbine sealing system taking nitrogen as seal medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150698A (en) * | 2017-12-25 | 2018-06-12 | 中国海洋石油集团有限公司 | Pneumatic diaphragm control valve executing agency diaphragm protection air source circuit |
| CN114215843A (en) * | 2021-11-25 | 2022-03-22 | 邯郸钢铁集团有限责任公司 | Method for reducing TRT thrust bearing temperature |
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Application publication date: 20170822 |