JPS61108814A - Gas-steam turbine composite facility - Google Patents
Gas-steam turbine composite facilityInfo
- Publication number
- JPS61108814A JPS61108814A JP60241229A JP24122985A JPS61108814A JP S61108814 A JPS61108814 A JP S61108814A JP 60241229 A JP60241229 A JP 60241229A JP 24122985 A JP24122985 A JP 24122985A JP S61108814 A JPS61108814 A JP S61108814A
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- feed water
- pipe
- heat exchanger
- water
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
- F01K23/106—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with water evaporated or preheated at different pressures in exhaust boiler
- F01K23/108—Regulating means specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Saccharide Compounds (AREA)
- Lubricants (AREA)
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガスタービン、このガスタービンのガス側に
後置接続された熱回収装置特に廃熱ボイラ、この熱回収
装置に付設されたエネルギー変換装置特に蒸気タービン
、およびこの熱回収装置のガス側に後置接続された廃ガ
ス熱交換器を有し、前記エネルギー変換装置が復水器と
これに復水管を介して後置接続された給水タンクとを有
し、前記廃ガス熱交換器が給水供給管および給水戻り管
を介して密閉給水回路を形成した状態において給水タン
クに接続されているようなガス−蒸気タービン複合設備
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gas turbine, a heat recovery device connected downstream to the gas side of the gas turbine, particularly a waste heat boiler, and an energy recovery device attached to the heat recovery device. A conversion device, in particular a steam turbine, and a waste gas heat exchanger downstream connected to the gas side of the heat recovery device, to which the energy conversion device is connected downstream via a condenser pipe. The present invention relates to a gas-steam turbine complex facility having a water supply tank, and wherein the waste gas heat exchanger is connected to the water supply tank through a water supply pipe and a water return pipe to form a closed water supply circuit.
かかる複合設備は既に広〈実施されている。かかる普通
の複合設備の場合、復水を所定の給水温度に加熱し脱気
するために、水蒸気が蒸気タービンから成るエネルギー
変換装置から直接給水タンクに導かれる。即ち蒸気ター
ビンからエネルギーの変換に利用できない蒸気が抽出さ
れる。Such complex facilities are already widely implemented. In such common complexes, steam is conducted from an energy conversion device consisting of a steam turbine directly into a feed water tank in order to heat the condensate to a predetermined feed water temperature and degas it. That is, steam that cannot be used for energy conversion is extracted from the steam turbine.
本発明の目的は、冒頭に述べた形式の複合設備の総合効
率を向上することにある。The aim of the invention is to increase the overall efficiency of complex installations of the type mentioned at the outset.
本発明によればこの目的は、特許請求の範囲第１項の特
徴部分記載の手段によって達成される。According to the invention, this object is achieved by the measures described in the characterizing part of claim 1.
バイパス管を介して給水供給管に導入される復 。 Rechargeable water is introduced into the water supply pipe via a bypass pipe.
水によって、廃ガス熱交換器への給水の入口温度が低下
でき、多量の廃ガス熱が給水回路に伝えられ、エネルギ
ー変換装置から給水タンクへの例えば水蒸気の供給は省
略できる。給水供給管における制御弁によって制御され
る給水温度の設定値はＨ２Ｏあるいは廃ガス内の酸（た
とえば５０２）の露点よりも高く決められ、それによっ
て廃ガス熱交換器の伝熱面における腐食が避けられる。By means of water, the inlet temperature of the feed water to the waste gas heat exchanger can be reduced, a large amount of waste gas heat is transferred to the water supply circuit, and the supply of eg water vapor from the energy conversion device to the water tank can be omitted. The set point of the feed water temperature, controlled by the control valve in the feed water supply line, is determined to be higher than the dew point of H2O or the acid (e.g. 502) in the waste gas, thereby avoiding corrosion on the heat transfer surfaces of the waste gas heat exchanger. It will be done.
特許請求の範囲第２項記載の本発明に基づくを利な実施
態様によれば、給水タンク内の圧力が一定に保たれ、従
って給水タンク内の給水の温度が一定にされ、これによ
り給水タンク内の給水の脱気が常に、給水に解けている
ガスを分離するのに十分に高い圧力で行われる。According to an advantageous embodiment of the invention according to claim 2, the pressure in the water supply tank is kept constant and the temperature of the supply water in the water supply tank is therefore constant, so that the water supply tank The degassing of the feed water within the feed water is always carried out at a pressure high enough to separate out the gases dissolved in the feed water.
特許請求の範囲第３項記載の別の有利な実施態様によれ
ば、ガスタービンの負荷変動およびそれに伴う廃ガス温
度の変動の際に、給水戻り管内の給水温度の設定値を、
所定の最大値と所定の最小値との間の範囲に維持できる
。According to a further advantageous embodiment as claimed in claim 3, the set point of the feed water temperature in the feed water return line is adjusted during load fluctuations of the gas turbine and associated fluctuations in the exhaust gas temperature.
It can be maintained within a range between a predetermined maximum value and a predetermined minimum value.
以下図面に示す実施例に基づいて本発明の詳細な説明す
る。The present invention will be described in detail below based on embodiments shown in the drawings.
図はガスタービンおよび高圧タービンと低圧タービンと
を持った蒸気タービンの複合設備を示している。The figure shows a combined installation of a gas turbine and a steam turbine with a high-pressure turbine and a low-pressure turbine.
ガスタービン２の従動軸には燃焼用空気の圧縮機４およ
び発電機５の駆動軸が連結されている。A driven shaft of the gas turbine 2 is connected to a drive shaft of a combustion air compressor 4 and a generator 5.
更に燃焼器８が設けられ、ここには圧縮機４の吐出管お
よびガスタービン２への燃焼ガスの供給管が接続されて
いる。蒸気タービン３の従動軸には発電機６の駆動軸が
連結されている。Furthermore, a combustor 8 is provided, to which a discharge pipe of the compressor 4 and a supply pipe of combustion gas to the gas turbine 2 are connected. A drive shaft of a generator 6 is connected to a driven shaft of the steam turbine 3 .
ガスタービン２からの廃ガス排出管には廃熱ボイラ７が
接続され、この廃熱ボイラ７は廃ガス排出管に直接接続
された高圧蒸気過熱器１１、および廃ガス流においてこ
れに直列接続された高圧蒸気発生器１３、高圧エコノマ
イザ１５、低圧蒸気過熱器Ｉ７、低圧蒸気発生器９およ
び低圧エコノマイザ１２を有している。A waste heat boiler 7 is connected to the waste gas discharge pipe from the gas turbine 2, which waste heat boiler 7 is connected to a high pressure steam superheater 11 directly connected to the waste gas discharge pipe and connected in series thereto in the waste gas flow. It has a high-pressure steam generator 13, a high-pressure economizer 15, a low-pressure steam superheater I7, a low-pressure steam generator 9, and a low-pressure economizer 12.
廃熱ボイラ７には更に高圧蒸気ドラム２２および低圧蒸
気ドラム２８がある。高圧蒸気ドラム２２には高圧エコ
ノマイザ１５の給水出口および高圧蒸気発生器１３の出
口が接続されている。高圧蒸気ドラム２２の給水出口は
循環ポンプ２４を介して高圧蒸気発生器１３の入口に接
続されている。The waste heat boiler 7 further includes a high pressure steam drum 22 and a low pressure steam drum 28. A water supply outlet of the high-pressure economizer 15 and an outlet of the high-pressure steam generator 13 are connected to the high-pressure steam drum 22 . The water supply outlet of the high-pressure steam drum 22 is connected to the inlet of the high-pressure steam generator 13 via a circulation pump 24 .
高圧蒸気ドラム２２の蒸気出口は高圧蒸気過熱器１１の
蒸気入口に接続されている。A steam outlet of the high pressure steam drum 22 is connected to a steam inlet of the high pressure steam superheater 11.
低圧エコノマイザ１２の出口および低圧蒸気発生器９の
出口は低圧蒸気ドラム２８に接続されている。低圧蒸気
ドラム２８の給水出口は給水ポンプ２６を介して高圧エ
コノマイザ１５の給水入口に、並びに循環ポンプ１０を
介して低圧蒸気発生器９の入口に接続されている。低圧
蒸気ドラム２８の蒸気出口は低圧蒸気過熱器１７の蒸気
入口に接続されている。The outlet of the low pressure economizer 12 and the outlet of the low pressure steam generator 9 are connected to a low pressure steam drum 28. The feedwater outlet of the low-pressure steam drum 28 is connected to the feedwater inlet of the high-pressure economizer 15 via a feedwater pump 26 and to the inlet of the low-pressure steam generator 9 via a circulation pump 10 . The steam outlet of the low pressure steam drum 28 is connected to the steam inlet of the low pressure steam superheater 17.
高圧蒸気過熱器１１の生蒸気出口は蒸気タービン３の高
圧タービン部の蒸気入口に接続され、低圧蒸気過熱器１
７の生蒸気出口は蒸気タービン３の低圧タービン部の蒸
気入口に接続されている。The live steam outlet of the high pressure steam superheater 11 is connected to the steam inlet of the high pressure turbine section of the steam turbine 3, and
The live steam outlet 7 is connected to the steam inlet of the low pressure turbine section of the steam turbine 3.
給水ポンプ３１を有する給水管３２が給水タンク３０か
ら低圧エコノマイザ１２の給水入口に通じている。A water supply pipe 32 with a water supply pump 31 leads from the water supply tank 30 to the water supply inlet of the low-pressure economizer 12 .
蒸気タービン３の排気管に排出蒸気管３３を介して復水
器３４が後置接続され、この復水器３４は復水出口側に
ホットウェル（復水ため）３５を有している。このホッ
トウェル３５は復水ポンプ３６付の復水管３７を介して
給水タンク３０に接続されている。この復水管３７にお
いて復水ポンプ３６の後方に制御弁４３が接続されてい
る。廃ガス熱交換器１４はそのガス側が低圧エコノマイ
ザ１２のガス側に後置接続され、その水側には給水戻り
管３９を介して給水タンク３０に接続されている。制御
弁４０およびそれに前置接続された循環ポンプ４１を持
った給水供給管３８は給水タンク３０から同様に廃ガス
熱交換器１４の水側に通じている。A condenser 34 is connected downstream to the exhaust pipe of the steam turbine 3 via an exhaust steam pipe 33, and this condenser 34 has a hot well (for condensate) 35 on the condensate outlet side. This hot well 35 is connected to a water supply tank 30 via a condensate pipe 37 equipped with a condensate pump 36. A control valve 43 is connected to the rear of the condensate pump 36 in the condensate pipe 37 . The waste gas heat exchanger 14 is connected on its gas side downstream to the gas side of the low-pressure economizer 12 , and its water side is connected to a water supply tank 30 via a water supply return pipe 39 . A water supply line 38 with a control valve 40 and a circulation pump 41 connected upstream thereof likewise leads from the water tank 30 to the water side of the waste gas heat exchanger 14 .
更に復水のバイパス管４２が復水管３７の復水ポンプ３
６と制御弁４３との間の接続個所から、給水供給管３８
の制御弁４０と廃ガス熱交換器１４の給水入口との間の
接続個所に通じている。制御弁′４３は給水タンク３０
内に圧力センサを持った制御器４５を有し、制御弁４０
は給水戻り管３９内および廃ガス熱交換器１４への給水
入口とバイパス管４２の接続個所との間における給水供
給管３８内にそれぞれ温度センサを持った制御器４６を
有している。Furthermore, the condensate bypass pipe 42 is connected to the condensate pump 3 of the condensate pipe 37.
6 and the control valve 43, the water supply pipe 38
control valve 40 and the water inlet of the waste gas heat exchanger 14. The control valve '43 is connected to the water tank 30
It has a controller 45 with a pressure sensor inside, and a control valve 40
has a controller 46 with a temperature sensor in the feedwater return pipe 39 and in the water supply pipe 38 between the water supply inlet to the waste gas heat exchanger 14 and the connection point of the bypass pipe 42.
復水はホットウェル３５から復水管３７、バイパス管４
２および給水供給管３８を通って廃ガス熱交換器１４に
通じ、給水戻り管３９を介して給水タンク３０に流れる
。給水供給管３８へのバイパス管４２の接続個所におい
て遣水は、給水タンク３０からの制御弁４０を通して導
かれる加熱された給水と混合され、廃ガス熱交換器１４
への復水の入口温度は、廃ガス熱交換器１４の廃ガス側
においてＨ２Ｏおよび廃ガス内の少量の３０２成分が露
点を下回ることがなく、それによって廃ガス熱交換器１
４の伝熱面の腐食が避けられるような設定値例えば７０
℃にされる。Condensate flows from the hot well 35 to the condensate pipe 37 and the bypass pipe 4
2 and the feed water supply pipe 38 to the waste gas heat exchanger 14 and flows via the feed water return pipe 39 to the water tank 30. At the connection of the bypass pipe 42 to the feed water supply pipe 38 the feed water is mixed with the heated feed water led through the control valve 40 from the water tank 30 and the waste gas heat exchanger 14
The inlet temperature of the condensate to the waste gas heat exchanger 14 is such that on the waste gas side of the waste gas heat exchanger 14 H2O and the small amount of 302 components in the waste gas do not fall below the dew point.
For example, set value 70 to avoid corrosion of the heat transfer surface in step 4.
℃.
給水タンク３０における圧力が制御弁４３で例えば、２
バールの設定圧力に制御され、この圧力で低温の復水は
復水管３７から直接給水タンク３０に導かれる。The pressure in the water supply tank 30 is controlled by the control valve 43, for example,
The pressure is controlled to a set pressure of bar, and at this pressure, low-temperature condensate is led directly from the condensate pipe 37 to the water supply tank 30.
給水戻り管３９における廃ガス熱交換器１４からの復水
の出口温度が例えばガスタービン２あるいは蒸気タービ
ン３の出力変動によって所定の最大値を越えるか、所定
の最小値を下回った場合、廃ガス熱交換器１４への復水
の入口温度の制御が切り離され、制御弁４０を介して給
水供給管３８へ導入される給水流量は、廃ガス熱交換器
１４からの給水の出口温度が例えば１１０℃の設定値を
有し、給水タンク３０における圧力が制御弁４３を介し
て設定値に制御し続けられるように調整される。If the outlet temperature of the condensate from the waste gas heat exchanger 14 in the feed water return pipe 39 exceeds a predetermined maximum value or falls below a predetermined minimum value due to output fluctuations of the gas turbine 2 or the steam turbine 3, for example, the waste gas Control of the inlet temperature of the condensate to the heat exchanger 14 is separated, and the flow rate of the feed water introduced into the feed water supply pipe 38 via the control valve 40 is such that the outlet temperature of the feed water from the waste gas heat exchanger 14 is 110, for example. ℃ and is regulated so that the pressure in the water tank 30 remains controlled to the set value via the control valve 43.
図は本発明に基づくガス−蒸気タービン複合設備の系統
図である。
２ニガスタービン、３：蒸気タービン、７：廃熱ボイラ
、１４：廃ガス熱交換器、３０：給水りンク、３４：復
水器、３７：復水管、３８：給水供給管、４０：制御弁
、４２：バイパス管、４３：制御弁、４５．４６７制御
器。The figure is a system diagram of a gas-steam turbine complex based on the present invention. 2 gas turbine, 3: steam turbine, 7: waste heat boiler, 14: waste gas heat exchanger, 30: water supply link, 34: condenser, 37: condensate pipe, 38: water supply pipe, 40: control Valve, 42: Bypass pipe, 43: Control valve, 45.467 Controller.
Claims (1)
続された熱回収装置、この熱回収装置に付設されたエネ
ルギー変換装置、およびこの熱回収装置のガス側に後置
接続された廃ガス熱交換器を有し、前記エネルギー変換
装置が復水器とこれに復水管を介して後置接続された給
水タンクとを有し、前記廃ガス熱交換器が給水供給管お
よび給水戻り管を介して密閉給水回路を形成した状態に
おいて給水タンクに接続されているようなガス−蒸気タ
ービン複合設備において、復水管（３７）から出て廃ガ
ス熱交換器（１４）の給水入口に向けて復水のバイパス
管（４２）が設けられ、給水供給管（３８）において給
水の流れ方向に見てバイパス管（４２）の接続個所の手
前に制御弁（４０）が設けられ、この制御弁（４０）が
バイパス管（４２）の接続個所の後方における給水供給
管（３８）内の温度センサおよびそれに対応した制御器
（４６）を有し、この制御器（４６）が廃ガス熱交換器
（１４）の給水入口温度を給水タンク（３０）から給水
供給管（３８）への流量によって所定の設定値に制御す
ることを特徴とするガス−蒸気タービン複合設備。 ２）復水管（３７）内に復水の流れ方向に見てバイパス
管（４２）の分岐個所の後方に制御弁（４３）が設けら
れ、この制御弁（４３）が給水タンク（３０）内の圧力
センサおよび制御器（４５）を有し、この制御器（４５
）が給水タンク（３０）内の圧力を給水タンク（３０）
への復水の流量によって所定の設定値に制御することを
特徴とする特許請求の範囲第１項記載の複合設備。 ３）給水戻り管（３９）に温度センサが設けられ、給水
供給管（３８）における制御弁（４０）の制御器（４６
）に接続され、この制御器（４６）が給水戻り管（３９
）内の給水温度が所定の最大値を越えた場合および所定
の最小値を下回った場合、廃ガス熱交換器（１４）から
の給水出口温度を給水の流量によって所定の設定値に制
御することを特徴とする特許請求の範囲第１項記載の複
合設備。[Claims] 1) A gas turbine, a heat recovery device connected downstream to the gas side of the gas turbine, an energy conversion device attached to the heat recovery device, and a device connected downstream to the gas side of the heat recovery device. a waste gas heat exchanger connected thereto, the energy conversion device having a condenser and a water supply tank downstream connected to the condenser via a condensate pipe, the waste gas heat exchanger having a water supply pipe connected to the energy conversion device; In such gas-steam turbine complexes, the water supply to the waste gas heat exchanger (14) exits from the condensate pipe (37) and is connected to the water supply tank in a sealed water supply circuit via the supply water return pipe. A condensate bypass pipe (42) is provided toward the inlet, and a control valve (40) is provided in the water supply pipe (38) before the connection point of the bypass pipe (42) when viewed in the flow direction of the water supply, This control valve (40) has a temperature sensor in the water supply pipe (38) behind the connection point of the bypass pipe (42) and a corresponding controller (46), which controller (46) A gas-steam turbine complex facility characterized in that the temperature of the water supply inlet of the heat exchanger (14) is controlled to a predetermined set value by the flow rate from the water supply tank (30) to the water supply pipe (38). 2) A control valve (43) is provided in the condensate pipe (37) at the rear of the branch point of the bypass pipe (42) when viewed in the flow direction of condensate, and this control valve (43) is installed in the water supply tank (30). pressure sensor and controller (45), and this controller (45
) adjusts the pressure in the water tank (30) to the water tank (30).
2. The complex equipment according to claim 1, wherein the complex equipment is controlled to a predetermined set value depending on the flow rate of condensed water. 3) A temperature sensor is provided in the water supply return pipe (39), and a controller (46) of the control valve (40) in the water supply pipe (38) is provided.
), and this controller (46) is connected to the water supply return pipe (39
), when the temperature of the feed water in the waste gas heat exchanger (14) exceeds a predetermined maximum value and falls below a predetermined minimum value, the temperature of the feed water outlet from the waste gas heat exchanger (14) is controlled to a predetermined set value by the flow rate of the feed water. The complex facility according to claim 1, characterized in that:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3439567.9 | 1984-10-29 | ||
| DE3439567 | 1984-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61108814A true JPS61108814A (en) | 1986-05-27 |
Family
ID=6249023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60241229A Pending JPS61108814A (en) | 1984-10-29 | 1985-10-28 | Gas-steam turbine composite facility |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0180093B1 (en) |
| JP (1) | JPS61108814A (en) |
| AT (1) | ATE34802T1 (en) |
| DE (1) | DE3563088D1 (en) |
| IN (1) | IN161926B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971166A (en) * | 1988-02-08 | 1990-11-20 | Sango Co., Ltd. | Muffler |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4976100A (en) * | 1989-06-01 | 1990-12-11 | Westinghouse Electric Corp. | System and method for heat recovery in a combined cycle power plant |
| DE102009010020B4 (en) * | 2009-02-21 | 2016-07-07 | Flagsol Gmbh | Feedwater degasser of a solar thermal power plant |
| DE102010054963B4 (en) * | 2010-12-17 | 2017-06-01 | Jumag Dampferzeuger Gmbh | Pressure control for full degassing in feedwater vessels by means of controllable valve |
| DE102013204396A1 (en) * | 2013-03-13 | 2014-09-18 | Siemens Aktiengesellschaft | Condensate preheater for a heat recovery steam generator |
| CN107697494B (en) * | 2017-09-14 | 2019-02-22 | 江苏航天惠利特环保科技有限公司 | A kind of coupled method device for recovering oil and gas |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1626151A1 (en) * | 1967-02-22 | 1971-01-14 | Aeg Kanis Turbinen | Thermal power plant with a steam turbine with reheater and with a gas turbine |
| CH613255A5 (en) * | 1976-11-25 | 1979-09-14 | Sulzer Ag | System for the utilisation of waste heat from a gas flow to drive electrical generators |
| DE3002615A1 (en) * | 1979-12-05 | 1981-06-11 | BBC AG Brown, Boveri & Cie., Baden, Aargau | Combined gas and steam turbine power plant - uses gas turbine waste heat to generate steam, preheats air-to-gas turbine compressor |
| CH655548B (en) * | 1982-03-31 | 1986-04-30 |
-
1985
- 1985-09-25 IN IN682/CAL/85A patent/IN161926B/en unknown
- 1985-10-16 DE DE8585113145T patent/DE3563088D1/en not_active Expired
- 1985-10-16 EP EP85113145A patent/EP0180093B1/en not_active Expired
- 1985-10-16 AT AT85113145T patent/ATE34802T1/en not_active IP Right Cessation
- 1985-10-28 JP JP60241229A patent/JPS61108814A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971166A (en) * | 1988-02-08 | 1990-11-20 | Sango Co., Ltd. | Muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0180093B1 (en) | 1988-06-01 |
| DE3563088D1 (en) | 1988-07-07 |
| EP0180093A1 (en) | 1986-05-07 |
| ATE34802T1 (en) | 1988-06-15 |
| IN161926B (en) | 1988-02-27 |
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