CN112253770A - Low-leakage high-temperature butterfly valve for marine diesel engine - Google Patents

Low-leakage high-temperature butterfly valve for marine diesel engine Download PDF

Info

Publication number
CN112253770A
CN112253770A CN202011180086.2A CN202011180086A CN112253770A CN 112253770 A CN112253770 A CN 112253770A CN 202011180086 A CN202011180086 A CN 202011180086A CN 112253770 A CN112253770 A CN 112253770A
Authority
CN
China
Prior art keywords
valve
seat
valve body
low
diesel engine
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
Application number
CN202011180086.2A
Other languages
Chinese (zh)
Inventor
顾扬庆
翁武秀
范成裕
钱海峰
郇海龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hudong Marine Valve Manufacture Co ltd
Original Assignee
Shanghai Hudong Marine Valve Manufacture Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Hudong Marine Valve Manufacture Co ltd filed Critical Shanghai Hudong Marine Valve Manufacture Co ltd
Priority to CN202011180086.2A priority Critical patent/CN112253770A/en
Publication of CN112253770A publication Critical patent/CN112253770A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • F16K1/465—Attachment of sealing rings to the valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a low-leakage high-temperature butterfly valve for a ship diesel engine, wherein a valve seat is welded on the inner wall of a valve body flow passage, the valve seat is designed to be a rear seat type, the rear seat is formed by two semicircular sealing seat plates, a groove is formed in the sealing surface of the rear seat, and a high-temperature-resistant metal sealing ring is embedded in the groove. The butterfly valve is characterized in that an upper bearing seat and a lower bearing seat are arranged at opposite positions of the butterfly valve body, an upper spherical bearing is arranged on the surface of the upper bearing seat, and a lower spherical bearing is arranged on the surface of the lower bearing seat. The low-leakage high-temperature butterfly valve for the marine diesel engine disclosed by the invention meets the requirements of high-temperature working conditions and low leakage of an SCR system and an EGR system of the marine diesel engine. The design of the backseat type embedded metal sealing ring ensures that the requirement of sealing low leakage grade is met at high temperature; the external design of bearing has avoided traditional axle sleeve to support under the high temperature valve spare part heat to open and make the pivot card die, has reduced the card of valve action and has hindered, has improved the safe and reliable nature in utilization of valve to guarantee the lives and property and reduce environmental pollution.

Description

Low-leakage high-temperature butterfly valve for marine diesel engine
Technical Field
The invention belongs to the technical field of ship fuel control, and particularly relates to a low-leakage high-temperature butterfly valve for a ship diesel engine.
Background
Since marine diesel engines have complicated fuel emission components and generally contain high-concentration toxic high-temperature gases such as oxynitrides and sulfides, diesel engines are designed with a desulfurization and denitrification treatment System (SCR) and an exhaust gas recirculation system (EGR). When the traditional butterfly valve is used in SCR and EGR systems of marine diesel engines, the problems of shaft sleeve blocking and excessive emission easily occur under high-temperature working conditions.
Disclosure of Invention
In order to ensure the normal operation of the SCR and EGR system of the marine diesel engine, the invention provides the low-leakage high-temperature butterfly valve for the marine diesel engine, which can meet the harsh working condition requirement and has the advantages of high temperature resistance, low leakage and the like.
The invention provides a low-leakage high-temperature butterfly valve for a marine diesel engine, which comprises a valve body, a valve plate, a valve seat, a driving shaft, a driven shaft, an upper bearing seat, a lower spherical bearing and an upper spherical bearing, wherein the valve body is provided with a valve seat;
the valve body is annular, and the valve plate is a circular plate and is arranged in a flow passage of the valve body; the valve seat is arranged on the inner wall of the valve body and is positioned between the valve body and the valve plate;
an upper bearing seat and a lower bearing seat are oppositely arranged on the outer wall of the valve body; the surface of the upper bearing seat is fixedly provided with an upper spherical bearing, and the surface of the lower bearing seat is fixedly provided with a lower spherical bearing;
one end of the driving shaft penetrates through the upper spherical bearing, the upper bearing seat and the valve body and is fixedly connected with the valve plate in the flow channel of the valve body;
one end of the driven shaft penetrates through the lower spherical bearing, the lower bearing seat and the valve body and is fixedly connected with the valve plate in a flow passage of the valve body;
when the butterfly valve is closed, the valve plate is parallel to the surface of the port of the valve body;
when the butterfly valve is opened, the driving shaft drives the valve plate and the driven shaft to rotate, so that the valve plate is perpendicular to the surface of the valve body where the port is located.
Optionally, the low-leakage high-temperature butterfly valve for the marine diesel engine further comprises a packing and a packing gland; the packing is flexible graphite packing and is arranged at the joint of the driving shaft or the driven shaft and the valve body; the packing gland is positioned above the packing and is fixedly connected with the wall of the valve body through a screw to compact the packing.
Optionally, the valve seat is designed to be a rear seat type, the rear seat is formed by two semicircular sealing seat plates, a groove is formed in a sealing surface of the rear seat, and a high-temperature-resistant metal sealing ring is embedded in the groove.
Optionally, the sealing surface of the metal sealing ring is ground or polished.
Optionally, the side surface of the valve plate is provided with a sealing ring surface, and the sealing ring surface is processed by a mirror surface; the sealing ring surface and the metal sealing ring embedded in the valve seat form a low-leakage sealing pair.
The low-leakage high-temperature butterfly valve for the marine diesel engine is designed aiming at the high-temperature working condition of a diesel engine desulfurization and denitrification treatment System (SCR) and an exhaust gas recirculation system (EGR) medium and the low-leakage requirement, and is designed into a backseat type valve seat form, and a metal sealing ring structure is embedded to meet the low-leakage requirement. Meanwhile, a traditional supporting structure of the shaft sleeve for the rotating shaft is removed, a bearing seat and an external spherical bearing structure are added, the dissipation of heat inside the valve is facilitated, and the phenomenon that the rotating shaft is tightly held by the shaft sleeve and is blocked at high temperature is effectively avoided.
Drawings
FIG. 1 is a half sectional view of a low leakage high temperature butterfly valve for a marine diesel engine.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
As shown in figure 1, the low-leakage high-temperature butterfly valve for the marine diesel engine comprises a valve body (4), a valve plate (5), a valve seat (6), a driving shaft (7), a driven shaft (3), an upper bearing seat (10), a lower bearing seat (2), a lower spherical bearing (1) and an upper spherical bearing (11).
The valve body (4) is annular, the valve plate (5) is a circular plate and is arranged in a flow channel of the valve body (4); the valve seat (6) is arranged on the inner wall of the valve body (4) and located between the valve body (4) and the valve plate (5).
An upper bearing seat (10) and a lower bearing seat (2) are oppositely arranged on the outer wall of the valve body (4); the surface of the upper bearing seat (10) is fixedly provided with an upper spherical bearing (11), and the surface of the lower bearing seat (2) is fixedly provided with a lower spherical bearing (1), so that the phenomenon that the rotating shaft is blocked due to the fact that the traditional shaft sleeve supports valve parts at high temperature and the hot expansion is caused is avoided, and the blocking of the valve action is reduced.
One end of the driving shaft (7) penetrates through an upper spherical bearing (11), an upper bearing seat (10) and the valve body (4) and is fixedly connected with the valve plate (5) in a flow channel of the valve body; the other end of the driving shaft (7) is connected with an external driving device in a matching mode, and the driving shaft (7) is driven to rotate through the external driving device.
One end of the driven shaft (3) penetrates through the lower spherical bearing (1), the lower bearing seat (2) and the valve body (4), and is fixedly connected with the valve plate (5) in a flow channel of the valve body.
When the butterfly valve is closed, the valve plate (5) is parallel to the surface of the port of the valve body (4);
when the butterfly valve is opened, the driving shaft (7) drives the valve plate (5) and the driven shaft (3) to rotate, so that the valve plate (5) is perpendicular to the surface of the valve body (4) where the port is located.
In the low-leakage high-temperature butterfly valve for the marine diesel engine, the valve seat (6) welded on the inner wall of the flow channel of the valve body (4) is designed in a backseat mode, the backseat is formed by two semicircular sealing seat plates, a groove is formed in the sealing surface of the backseat, a high-temperature-resistant metal sealing ring (not shown in the figure) is embedded in the groove, and the sealing surface of the metal sealing ring is ground or polished.
In the low-leakage high-temperature butterfly valve for the marine diesel engine, the side surface of the valve plate (5) is provided with a sealing ring surface, and the sealing ring surface is also processed by a mirror surface. The sealing ring surface and the valve seat are embedded with a metal sealing ring to form a low-leakage sealing pair.
The invention provides a low-leakage high-temperature butterfly valve for a marine diesel engine, which further comprises a packing (8), a packing gland (9) and the like. The packing (8) is flexible graphite packing and is arranged at the joint of the driving shaft (7) or the driven shaft (3) and the valve body (4); the packing gland (9) is positioned above the packing and is fixedly connected with the wall of the valve body (4) through a screw to compact the packing (8) so as to prevent the medium in the flow passage of the valve body (4) from leaking outside at high temperature.
In conclusion, the butterfly valve is designed for the high-temperature working condition and the low leakage requirement of the desulfurization and denitrification treatment System (SCR) and the exhaust gas recirculation system (EGR) medium of the marine diesel engine. The design of the backseat type embedded metal sealing ring ensures that the requirement of sealing low leakage grade is met at high temperature; the external bearing design is used for avoiding the phenomenon that the rotating shaft is blocked due to the fact that the traditional shaft sleeve supports the hot expansion of valve parts at high temperature, so that the blocking of the valve action is reduced, the use safety and reliability of the valve are improved, the lives and properties are guaranteed, and the environmental pollution is reduced.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.

Claims (5)

1. The utility model provides a low high temperature butterfly valve that leaks for marine diesel engine which characterized in that contains: the valve comprises a valve body, a valve plate, a valve seat, a driving shaft, a driven shaft, an upper bearing seat, a lower spherical bearing and an upper spherical bearing;
the valve body is annular, and the valve plate is a circular plate and is arranged in a flow passage of the valve body; the valve seat is arranged on the inner wall of the valve body and is positioned between the valve body and the valve plate;
an upper bearing seat and a lower bearing seat are oppositely arranged on the outer wall of the valve body; the surface of the upper bearing seat is fixedly provided with an upper spherical bearing, and the surface of the lower bearing seat is fixedly provided with a lower spherical bearing;
one end of the driving shaft penetrates through the upper spherical bearing, the upper bearing seat and the valve body and is fixedly connected with the valve plate in the flow channel of the valve body;
one end of the driven shaft penetrates through the lower spherical bearing, the lower bearing seat and the valve body and is fixedly connected with the valve plate in a flow passage of the valve body;
when the butterfly valve is closed, the valve plate is parallel to the surface of the port of the valve body;
when the butterfly valve is opened, the driving shaft drives the valve plate and the driven shaft to rotate, so that the valve plate is perpendicular to the surface of the valve body where the port is located.
2. The low-leakage high-temperature butterfly valve for a marine diesel engine according to claim 1, further comprising a packing and a packing gland; the packing is flexible graphite packing and is arranged at the joint of the driving shaft or the driven shaft and the valve body; the packing gland is positioned above the packing and is fixedly connected with the wall of the valve body through a screw to compact the packing.
3. The low-leakage high-temperature butterfly valve for the marine diesel engine according to claim 1, wherein the valve seat is of a backseat design, the backseat is formed by two semicircular sealing seat plates, a groove is arranged on a sealing surface of the backseat, and a high-temperature-resistant metal sealing ring is embedded in the groove.
4. A low-leakage high-temperature butterfly valve for a marine diesel engine according to claim 3, wherein the sealing surface of said metal seal ring is ground or polished.
5. The low-leakage high-temperature butterfly valve for the marine diesel engine according to claim 3, wherein the side surface of the valve plate has a sealing ring surface, and the sealing ring surface is mirror-finished; the sealing ring surface and the metal sealing ring embedded in the valve seat form a low-leakage sealing pair.
CN202011180086.2A 2020-10-29 2020-10-29 Low-leakage high-temperature butterfly valve for marine diesel engine Pending CN112253770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011180086.2A CN112253770A (en) 2020-10-29 2020-10-29 Low-leakage high-temperature butterfly valve for marine diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011180086.2A CN112253770A (en) 2020-10-29 2020-10-29 Low-leakage high-temperature butterfly valve for marine diesel engine

Publications (1)

Publication Number Publication Date
CN112253770A true CN112253770A (en) 2021-01-22

Family

ID=74262807

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011180086.2A Pending CN112253770A (en) 2020-10-29 2020-10-29 Low-leakage high-temperature butterfly valve for marine diesel engine

Country Status (1)

Country Link
CN (1) CN112253770A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201875245U (en) * 2010-11-01 2011-06-22 浙江科海仪表有限公司 Butterfly valve for flue adjusting
CN205504010U (en) * 2016-03-31 2016-08-24 安徽盛运环保工程有限公司 Flue butterfly valve
CN208816703U (en) * 2018-08-07 2019-05-03 王中杰 A kind of double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201875245U (en) * 2010-11-01 2011-06-22 浙江科海仪表有限公司 Butterfly valve for flue adjusting
CN205504010U (en) * 2016-03-31 2016-08-24 安徽盛运环保工程有限公司 Flue butterfly valve
CN208816703U (en) * 2018-08-07 2019-05-03 王中杰 A kind of double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing

Similar Documents

Publication Publication Date Title
CN102822472A (en) Turbocharger
JP2009024502A (en) Exhaust bypass valve
CN112253770A (en) Low-leakage high-temperature butterfly valve for marine diesel engine
JP4665653B2 (en) Flow control valve
EP0603247A1 (en) Butterfly valve seal.
CN108775406A (en) High-performance nano coating corrugated tube valve special for chlorine
CN211174397U (en) Air inlet corrugated pipe of EGR cooler
CN114320676B (en) Engine EGR (exhaust gas Recirculation) cooling control system, method and vehicle
CN206274086U (en) A kind of air operated reversing valve
CN209129685U (en) Variable-geometry mixed-flow turbocharger sealing structure
CN208220922U (en) A kind of exhaust gas recirculation valve with sealing device
EP1130245A3 (en) Adaptable gas and moisture shield for a gas management valve
CN216841921U (en) Adopt turbocharger bleed valve of ball bearing
EP0961021A3 (en) Fuel supply for internal combustion engine
CN202900443U (en) Sealing gasket of automobile supercharger
CN207437177U (en) A kind of mounting structure of ternary catalyzing unit
CN205013711U (en) Marine diesel high temperature butterfly valve
CN210153232U (en) Switching and adjusting equipment for flue gas and waste gas pipelines
CN110894877A (en) Axial-flow check valve rotation-proof structure for LNG
CN213017911U (en) Ventilation one-way valve and marine diesel engine preheating system thereof
CN219013374U (en) All-metal hard-seal butterfly valve with five eccentric structures
CN218347619U (en) Smoke leakage stopping device for high-temperature flue gas fan in smelting process
CN219345559U (en) V-shaped ball valve for high-temperature anti-blocking
CN216407756U (en) Novel clamp type pneumatic printing and dyeing butterfly valve
CN219327571U (en) Waste gas bypass device and turbocharger with same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210122