CN203547921U - Combustion engine turbocharger applicable to coke oven gas internal combustion engine - Google Patents
Combustion engine turbocharger applicable to coke oven gas internal combustion engine Download PDFInfo
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- CN203547921U CN203547921U CN201320474287.2U CN201320474287U CN203547921U CN 203547921 U CN203547921 U CN 203547921U CN 201320474287 U CN201320474287 U CN 201320474287U CN 203547921 U CN203547921 U CN 203547921U
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Abstract
The utility model relates to a combustion engine turbocharger applicable to a coke oven gas internal combustion engine. The combustion engine turbocharger is composed of an axial-flow turbine and a centrifugal-flow compressor, wherein the axial-flow turbine and the centrifugal-flow compressor are coaxial. The diameter Phi of the turbine is 248mm, and the diameter Phi of a compressor impeller is 258mm. The external diameter Phi of the working face of a thrust bearing is 72mm, and the inner hole diameter Phi is 29mm.The working speed of the combustion engine turbocharger is 32,400 revolutions per minute, the pressure ratio is 3.25, the flow is 2,2kg/second, and the maximum permissible temperature at a turbine inlet is 690 DEG C. A gas inlet shell of the turbocharger is made of Chinalco nodular cast iron, and a turbine gas outlet shell is made of corrosion-resistant alloy cast iron. A turbine blade is made of corrosion-resistant high-temperature alloy, and the surface is subjected to shot blasting and is provided with an aluminide coating. A nozzle ring is made of corrosion-resistant heat-resistant steel. The combustion engine turbocharger is used for matching 16-V 240 type coke oven (tail) gas internal combustion engines and achieves the rated power of 2,000kW. The performance of the coke oven gas internal combustion engine and the high-temperature-resistant corrosion-resistant requirements are met, and the combustion engine turbocharger and the coke oven gas internal combustion engine can achieve long-term stable combined operation.
Description
Technical field
The utility model belongs to generating internal-combustion engine turbosupercharger, and particularly one is applicable to coke-stove gas internal-combustion engine combustion machine turbosupercharger.
Background technique
Using heavy duty generator set to carry out coke oven (tail) gas to generate electricity scheme is one of coke oven (tail) coal gas comprehensive Utilization Ways of current comparative maturity; have once invest little, the cycle of building a station is short, power range is determined according to source of the gas and the feature of convenient removal; be very suitable for the medium and small coke-oven plant disperseing; be conducive to environmental protection; turn waste into wealth, reduce exhaust gas evacuation the burn exhaust emission pollution and the atmosphere temperature rise that cause.
Coke oven (tail) gas engine generator set is take coke oven (tail) coal gas as fuel, adopt process control machine control coke oven (tail) gas inlet, according to coke oven (tail) gas concentration, change and automatically adjust gasoline air mixture ratio, there is effective explosion precaution, in order effectively to improve coke oven (tail) gas engine generator set output power, adopt refrigeration technique in air intake pressurized, fresh air is through turbocharger supercharged, after intercooler is cooling, enter again cylinder, improved air charge, compared with naturally inflating, output power improves more than 30%.Therefore the turbosupercharger that exploitation is suitable for coke oven (tail) gas engine improves output power for unit and reliable and stable operation is very important.
Because coke oven (tail) coal gas contains hydrogen and sulfur dioxide, and have the high temperature of 100 degree, diesel combustion machine is inapplicable by combustion machine turbosupercharger.Therefore to be applicable to the requirement that coke oven (tail) coal gas combustion motor combustion machine turbosupercharger proposes higher capability and performance technical order.
Model utility content
The purpose of this utility model is to provide one and is applicable to coke-stove gas internal-combustion engine combustion machine turbosupercharger, meet and be applicable to contain hydrogen and sulfur dioxide, combustion machine turbosupercharger requirement for the internal-combustion engine of coke oven (tail) coal gas of 650 degrees Celsius of lower high temperature, meets the requirement that reaches heatproof height and resistance to acid attack.
The utility model content:
One is applicable to coke-stove gas internal-combustion engine combustion machine turbosupercharger, it is characterized in that: axial-flow turbine and centrifugal-flow compressor, consist of, the two is coaxial; Turbine adopts friction welding to connect with main shaft, and centrifugal-flow compressor and main shaft adopt tapering interference fit; Three oil film wedge floating bearings support, pressure lubrication, and multi-oil wedge floating-ring thrust-bearing bears turbine and impeller end thrust;
Gas compressor part consists of centrifugal-flow compressor impeller and case, Diffuser and spiral case;
Compressor impeller is comprised of inducer and impeller, the two hot charging on axle sleeve, impeller diameter Φ 258mm;
Inducer has adopted deviated splitter vane, and impeller blade is back curved;
Turbine part is comprised of fuel gas air admission shell, nozzle ring and turbine, turbine diameter Φ 248mm,
Fuel gas air admission shell is Non-water-cooled structure, and material is middle aluminium spheroidal graphite cast iron;
Nozzle ring is integral precision casting, and material is corrosionproof heatproof steel;
Turbine is comprised of wheel disc and 45 blades, and blade adopts tenon tooth tongue-and-groove to connect with wheel disc, and lock sheet control moves axially, and lacing wire silk passes through friction control blade resonance through the hole at blade middle part;
Turbine blade material is Al-Cu corrosion-resistant high temperature alloy, and shot blasting on surface, has coat of aluminide;
Thrust-bearing thrust face external diameter Φ 72mm, internal orifice dimension Φ 29mm;
Support and gas outlet hausing and spiral case form pressurized machine main components, support is the basic part of installation shaft bearing and thrust-bearing, material is alloy cast iron, and gas outlet hausing, for the exhaust outlet of rear high temperature coke oven (tail) coal gas of burning, is subject to washing away of high temperature corrosion gas for a long time, material is corrosion resistant alloy cast iron, spiral case and Diffuser form diffusion passage, and high-speed air flow enters spiral case by Diffuser, and flow area progressively expands, air-flow progressively slows down, and pressure increases;
The intake and exhaust of turbosupercharger, lubricant oil, cooling water connection mouth are with coke oven (tail) gas engine and extraneous connecting pipeline is smooth-going docks.
The beneficial effects of the utility model:
The utility model is applicable to coke oven (tail) gas engine, for mating 16V240 Formed Coke Furnace (tail) gas engine, reaches nominal power 2000kW; Meet this coke-stove gas engine performance and corrosion-and high-temp-resistant requirement, have corrosion-resistantly, high temperature resistant and explosion-proof performance, can cooperation steady in a long-term.
Accompanying drawing explanation
Fig. 1 is that ZN250RJ type is applicable to coke-stove gas internal-combustion engine turbocharger arrangement schematic diagram
In figure: shell, 5 gas outlet hausings, 6 turbine blades, 7 nozzle rings, 8 cooling water connectors, 9 thrust-bearings, 10 lubricating oil inlets, 11 coke ovens (tail) coal gas waste gas outlet, 12 air intlets, 13 air outlet slits, 14 lubricating oil outlets are entered in 1 exhaust gas turbine with axial flow, 2 centrifugal-flow compressors, 3 coke ovens (tail) coal gas high-temperature fuel gas inlet, 4 combustion gas.
Embodiment
One is applicable to coke-stove gas internal-combustion engine combustion machine turbosupercharger, by exhaust gas turbine with axial flow and centrifugal-flow compressor, formed, the two coaxial built-in floating bearing by outside fuel feeding and thrust-bearing are supported on High Rotation Speed between 20000～50000rpm, the high-temperature fuel gas that turbine is discharged by internal-combustion engine enters nozzle ring expansion through gas inlet shell and produces high velocity air promotion turbine High Rotation Speed, drive compressor impeller High Rotation Speed, fresh air enters the acquisition of impeller High Rotation Speed through baffler and through blade diffuser diffusion remittance spiral case formation high-pressure air, enters internal combustion engine inlet at a high speed, form fresh air charge and scavenging, improve fresh air charge, increase coke-stove gas charge, improve output power of internal combustion engine more than 30% compared with non pressurized mode.
The utility model is as shown in the figure applicable to coke-stove gas internal-combustion engine, and combustion machine turbosupercharger consists of exhaust gas turbine with axial flow 1 and centrifugal-flow compressor 2, and the two is coaxial; Turbine adopts friction welding to connect with main shaft, and centrifugal-flow compressor 2 adopts tapering interference fit with main shaft; Three oil film wedge floating bearings support, pressure lubrication, and multi-oil wedge floating-ring thrust-bearing bears turbine and impeller end thrust;
Gas compressor part consists of centrifugal-flow compressor impeller and case, Diffuser and spiral case;
Compressor impeller is comprised of inducer and impeller, the two hot charging on axle sleeve, impeller diameter Φ 258mm;
Inducer has adopted deviated splitter vane, and impeller blade is back curved;
Turbine part is comprised of fuel gas air admission shell 4, nozzle ring 7 and turbine (comprising gas outlet hausing 5, turbine blade 6), turbine diameter Φ 248mm,
Fuel gas air admission shell 4 is Non-water-cooled structure, and material is middle aluminium spheroidal graphite cast iron;
Nozzle ring 7 is integral precision casting, and material is corrosionproof heatproof steel;
Turbine is comprised of wheel disc and 45 blades, and blade adopts tenon tooth tongue-and-groove to connect with wheel disc, and lock sheet control moves axially, and lacing wire silk passes through friction control blade resonance through the hole at blade middle part;
Thrust-bearing 9 thrust face external diameter Φ 72mm, internal orifice dimension Φ 29mm;
Support and gas outlet hausing 5 and spiral case form pressurized machine main components, support is the basic part of installation shaft bearing and thrust-bearing, material is alloy cast iron, and gas outlet hausing is the exhaust outlet 11 of high-temp waste gas after burning, is subject to for a long time washing away of high temperature corrosion gas, material is corrosion resistant alloy cast iron, spiral case and Diffuser form diffusion passage, and high-speed air flow enters spiral case by Diffuser, and flow area progressively expands, air-flow progressively slows down, and pressure increases;
The intake and exhaust (comprising air intlet 12, air outlet slit 13) of turbosupercharger, lubricant oil (comprising lubricating oil inlet 10 lubricating oil outlets 14), cooling water connection mouth 8 are with coke-stove gas internal-combustion engine and extraneous connecting pipeline is smooth-going docks.
ZN250RJ type combustion machine turbosupercharger meets the requirement of 16V240 Formed Coke Furnace (tail) gas engine coupling, and nominal power 2000kW, meets this Formed Coke Furnace (tail) gas engine utilization overhaul cycle request.
Coke oven (tail) coal gas is gaseous state, calorific value is lower than diesel oil, 16V240 Formed Coke Furnace (tail) gas engine turbine exhaust flow specific pressure mechanism of qi air mass flow large 20～30%, therefore compared with use for diesel engine ZN250 type turbosupercharger, ZN250RJ type combustion machine turbo-charger blower impeller wheel footpath reduces 20%, and the bearing capacity of thrust-bearing increases 30%.
Coke oven (tail) coal gas contains hydrogen and sulfur dioxide, nearly 650 degrees Celsius of combustion engine waste gas row temperature, and combustion machine row high, the rich hydrogen of temperature and acid etching problem have a strong impact on the pressurized machine life-span; ZN250RJ type combustion machine turbosupercharger is fired into shell, turbine blade and gas outlet hausing, has adopted special exotic material and has carried out surperficial special processing.
The intake and exhaust of ZN250RJ type combustion machine turbosupercharger, lubricant oil, cooling water connection mouth can with coke oven (tail) gas engine and extraneous connecting pipeline is smooth-going be docked.
As shown in Figure 1, ZN250RJ type combustion machine turbosupercharger is take ZN250 diesel engine turbosupercharger as basis, according to the installation of 16V240 Formed Coke Furnace gas engine, connect and supporting requirement, turbine, gas compressor and bearing and the connection of gas and oil water to combustion machine pressurized machine redesign, and used the parts of N250 diesel engine turbosupercharger maturation, completed the exploitation of combustion machine pressurized machine complete machine.
Concrete research and development design content is as follows:
1. according to coke-stove gas internal-combustion engine traffic requirement, designed and developed combustion machine pressure booster blower impeller and Diffuser, the pressure ratio of gas compressor and Flow characteristics are mated in the efficient district of gas compressor with combustion machine Flow characteristics.Compared with use for diesel engine ZN250 type turbosupercharger, ZN250RJ type combustion machine turbo-charger blower impeller wheel footpath reduces 20%.
2. according to coke-stove gas internal-combustion engine traffic requirement, designed and developed combustion machine booster turbine and nozzle ring, the turbine flow characteristic of firing machine pressurized machine is mated in the combustion efficient Operational Zone of machine booster turbine with combustion machine Flow characteristics.
3. according to firing the feature that machine supercharger structure turbine and compressor impeller impeller diameter ratio increasing axial thrust are large, require bearing to have larger bearing capacity, developed new structure thrust-bearing, the bearing capacity of thrust-bearing increases 30%, has met usage requirement.
4. combustion machine pressurized machine center is high consistent with this Formed Coke Furnace gas engine requirement, guarantees that installation and the coke-stove gas internal-combustion engine related components of firing machine pressurized machine do not interfere.
5.ZN250RJ-1 type combustion machine turbosupercharger is fired into shell, nozzle ring, turbine blade and gas outlet hausing, for meeting combustion machine row temperature height and resistance to acid attack requirement, has adopted special exotic material or has carried out surperficial special processing.
6. designed new structure gas inlet housing, its profile of appropriate design and turbine inlet, guarantee this Formed Coke Furnace gas engine exhaust manifold and combustion machine smooth-going connection of booster turbine.
7. designed cooling water connection, lubricant oil connection, pressurized machine lubricant oil, cooling water and this Formed Coke Furnace gas engine are achieved a butt joint.
Claims (1)
1. be applicable to a coke-stove gas internal-combustion engine combustion machine turbosupercharger, it is characterized in that: axial-flow turbine and centrifugal-flow compressor, consist of, the two is coaxial; Turbine adopts friction welding to connect with main shaft, and centrifugal-flow compressor and main shaft adopt tapering interference fit; Three oil film wedge floating bearings support, pressure lubrication, and multi-oil wedge floating-ring thrust-bearing bears turbine and impeller end thrust;
Gas compressor part consists of centrifugal-flow compressor impeller and case, Diffuser and spiral case;
Compressor impeller is comprised of inducer and impeller, the two hot charging on axle sleeve, impeller diameter Φ 258mm;
Inducer has adopted deviated splitter vane, and impeller blade is back curved;
Turbine part is comprised of fuel gas air admission shell, nozzle ring and turbine, turbine diameter Φ 248mm,
Fuel gas air admission shell is Non-water-cooled structure, and material is middle aluminium spheroidal graphite cast iron;
Nozzle ring is integral precision casting, and material is corrosionproof heatproof steel;
Turbine is comprised of wheel disc and 45 blades, and blade adopts tenon tooth tongue-and-groove to connect with wheel disc, and lock sheet control moves axially, and lacing wire silk passes through friction control blade resonance through the hole at blade middle part;
Turbine blade material is Al-Cu corrosion-resistant high temperature alloy, and shot blasting on surface, has coat of aluminide;
Thrust-bearing thrust face external diameter Φ 72mm, internal orifice dimension Φ 29mm;
Support and gas outlet hausing and spiral case form pressurized machine main components, support body material is alloy cast iron, gas outlet hausing material is corrosion resistant alloy cast iron, spiral case and Diffuser form diffusion passage, high-speed air flow enters spiral case by Diffuser, flow area progressively expands, and air-flow progressively slows down, and pressure increases;
The intake and exhaust of turbosupercharger, lubricant oil, cooling water connection mouth are with coke-stove gas internal-combustion engine and extraneous connecting pipeline is smooth-going docks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474287.2U CN203547921U (en) | 2013-08-05 | 2013-08-05 | Combustion engine turbocharger applicable to coke oven gas internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320474287.2U CN203547921U (en) | 2013-08-05 | 2013-08-05 | Combustion engine turbocharger applicable to coke oven gas internal combustion engine |
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| CN203547921U true CN203547921U (en) | 2014-04-16 |
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|---|---|---|---|
| CN201320474287.2U Expired - Fee Related CN203547921U (en) | 2013-08-05 | 2013-08-05 | Combustion engine turbocharger applicable to coke oven gas internal combustion engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422976A (en) * | 2013-08-05 | 2013-12-04 | 天津机辆轨道交通装备有限责任公司 | Gas turbine turbocharger suitable for coke oven gas internal combustion engine |
| CN105275617A (en) * | 2015-11-24 | 2016-01-27 | 天津机辆轨道交通装备有限责任公司 | Turbocharger for coke oven gas turbine |
| CN107614847A (en) * | 2015-12-25 | 2018-01-19 | 三菱重工业株式会社 | Variable nozzle mechanism and variable geometry turbocharger |
-
2013
- 2013-08-05 CN CN201320474287.2U patent/CN203547921U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422976A (en) * | 2013-08-05 | 2013-12-04 | 天津机辆轨道交通装备有限责任公司 | Gas turbine turbocharger suitable for coke oven gas internal combustion engine |
| CN105275617A (en) * | 2015-11-24 | 2016-01-27 | 天津机辆轨道交通装备有限责任公司 | Turbocharger for coke oven gas turbine |
| CN107614847A (en) * | 2015-12-25 | 2018-01-19 | 三菱重工业株式会社 | Variable nozzle mechanism and variable geometry turbocharger |
| CN107614847B (en) * | 2015-12-25 | 2019-11-19 | 三菱重工发动机和增压器株式会社 | Variable nozzle mechanism and variable geometry turbocharger |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140805 |
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| EXPY | Termination of patent right or utility model |