CN106246933A - Valve cut soon by a kind of passive machinery blended for gas - Google Patents
Valve cut soon by a kind of passive machinery blended for gas Download PDFInfo
- Publication number
- CN106246933A CN106246933A CN201610880572.2A CN201610880572A CN106246933A CN 106246933 A CN106246933 A CN 106246933A CN 201610880572 A CN201610880572 A CN 201610880572A CN 106246933 A CN106246933 A CN 106246933A
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- Prior art keywords
- valve
- gas
- passive
- soon
- torsion spring
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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
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Valve cut soon by the passive machinery that the invention discloses in a kind of coal mine gas blending procedure, it is possible to resolve higher concentration mash gas extraction safety, quick, linkage cut-out problem in regenerative oxidation device and waste heat recycling system gas blending procedure thereof.The passive machinery of the present invention is cut valve soon and is opened by rocking arm turning gear wheel disc, relies on malleation bleed to promote non-metal elastic diaphragm to drive locking rod spreadet spreadet wheel dish, makes valve plate be positioned at opening；When blower export gas decompression, diaphragm drives multi-connecting-rod mechanism to unlock toothed disc under the effect of back-moving spring, and valve plate is at Guan Bi torsion spring torque effect ShiShimonoseki valve closing door.The Core Feature of valve is that secure synchronization is cut off, passive form, purely mechanic action, and process gets involved without extra power, it is to avoid the unreliability of the complication system being made up of PLC and electricity, liquid, gas drive mechanism；Bleed is used for locking valve, reduces and artificially can open participation, it is to avoid maloperation.
Description
Technical field
The present invention relates to safety when two kinds of variable concentrations gases blend, quick, linkage shearing device, particularly to accumulation of heat oxygen
In gasifying device and bootstrap system gas blending procedure, higher concentration mash gas extraction is cut with the linkage of extremely low concentration ventilating gas
Disconnected.
Background technology
Ventilating gas oxidation processes generally requires the mash gas extraction mixing certain higher concentration, and mash gas extraction
Reliable cut-out is directly connected to the safe operation of oxidation unit.Generally, available by stop valve (electricity, liquid or pneumatic), stream in industry
The control system of the composition such as gauge, concentration detector and PLC controls supply and the cut-out of mash gas extraction, to avoid ventilating gas
When stopping supplying, higher concentration mash gas extraction the most constantly blends the deflagration accident having caused.This method depends on the accurate of control strategy
Property, the reliability of the hardware such as valve instrument and run the correct operation of operator, during relate to complex measurement,
Calculation procedure and control instruction, add the unreliability of technological process.This type of method is feasible in general industry is applied
, but when in the face of occasions higher to security requirement such as flammable explosive gas blending, cannot fundamentally solve safety hidden
Suffer from.
Mechanical linkage valve well known in the prior art, relies primarily on the bleed conduct of blower export in ventilating gas pipeline
The power of valve opening, it is ensured that after forming certain blast in ventilating gas pipeline, mash gas extraction just allows to blend to enter.But should
Valve exist some deficiencies be, when gas density transfinite and has a power failure generation time, aerator shutdown, ventilating gas pipeline mistake
Pressure, valve cuts off, if the super concentration gas after blending not and diffuses and power transmission unlatching blower fan, now mechanical linkage valve is at induced duct
Synchronize under pressure effect to open, continue to blend, cause blending after gas concentration and raise further, cause security incident.This generally
The situation that rate is less has occurred in mining area instability stops power transmission and complicated actual production process.
The operation of system blower is affected, whenever all kinds of feelings by many factors such as power failure, the system failure, gas overpressure concentration
After condition causes safety interlocking, start is required to do safety and failture evacuation inspection again.If fan outlet blast is direct
Interlocking mechanism stop valve is opened, then this safety inspection and failture evacuation link exist careless omission will necessarily bury safety for production
Hidden danger.
To sum up, current blending mode one is by control system actively regulation, it is adaptable to general industry process, program
Complex, there is equipment dependability, strategy design and the potential safety hazard of manual operation accuracy；One is mechanical linkage, mesh
Before still suffer from the direct linkage valve of blast open safety problem.
Summary of the invention
It is an object of the invention to provide a kind of passive machinery blended for gas and cut valve soon, valve is manually opened,
Rely on malleation bleed locking valve so that it is when properly functioning, be in normally open.When gas in main pipeline (ventilating gas pipeline)
Body decompression (such as fan parking), lockable mechanism discharges, and valve is closed under the effect of Guan Bi torsion spring or weight, and without external energy
Amount drives.This valve achieves extremely low concentration ventilating gas and cuts off control with higher concentration mash gas extraction blending procedure non-passive safety
System, uses the method for simple mechanical transmission to improve the reliability of valve, it is ensured that oxidation unit safe operation.
The present invention solves that the technical scheme that its technical problem is taked is:
A kind of passive cutting valve soon for what gas blended, including air entraining pipe, air chamber, multi-connecting-rod mechanism and valve body, it is special
Levy and be,
--arranging non-metal elastic diaphragm in described air chamber, air chamber is divided into Hu Bu UNICOM by described non-metal elastic diaphragm
Two plenum space, wherein, a plenum space and one end UNICOM of air entraining pipe, the other end of described air entraining pipe connects positive pressure gas
Body pipeline, another plenum space and atmosphere,
--arranging a connection piece on described non-metal elastic diaphragm, the side of described connector passes air chamber by a rod member
A wall be connected with the one end of the back-moving spring being arranged on outside air chamber, the opposite side of described connector pass through another rod member
Another wall through air chamber is connected with the multi-connecting-rod mechanism being arranged on outside air chamber,
--one end of described valve body arranges unlatching and lockable mechanism, and the other end arranges close mechanism, wherein,
Described unlatching and lockable mechanism include locking rod, spreadet spreadet wheel dish and rocking arm, the outer rim cloth of described spreadet spreadet wheel dish
Be equipped with the locking gear teeth, the card of spreadet spreadet wheel dish arrange described rocking arm, described rocking arm in order to manually opened valve body, locking rod
One end is connected with multi-connecting-rod mechanism, and the other end abuts with the locking gear teeth of spreadet spreadet wheel dish, in order to pin toothed disc.
Preferably, described resilient nonmetallic diaphragm, under said two plenum space differential pressure action, produce displacement, then carry
Dynamic multi-connecting-rod mechanism；The other end of described back-moving spring arranges pretightning force regulation bolt.Valve, when design, needs to consider non-gold
Belong to diaphragm displacement under different difference force, back-moving spring pretightning force effects, so that it is determined that the unlatching pressure of valve, it is ensured that drum
Fan outlet flow reaches valve opening during design load.In practical operation, can be realized by regulation initial tension of spring.
Preferably, described multi-connecting-rod mechanism includes the rotation bar that several connecting rods and several quantity are suitable, described many
Linkage is in order to realize amplification and the conversion of action direction of described resilient nonmetallic diaphragm motive force.Preferably, bar is rotated
Arrange universal joint to connect.Additionally, multi-connecting-rod mechanism is conducive to adjusting the contour structures of valve.
Preferably, in the rotation bar that several quantity described are suitable, at least one rotates bar amplifies lever as active force,
At least one rotates bar as action direction shifter lever.
Preferably, described valve body be sealed into the soft sealing of contact, the valve plate in described valve body is butterfly valve structure or turns over
Plate valve structure.
Preferably, described close mechanism includes that torsion spring device, described torsion spring device include torsion spring and positioning turntable, torsion spring one
End is fixed on valve body, and the other end inserts in the hole, location of positioning turntable, for producing the valve plate closed action in valve body.
Preferably, described close mechanism also includes the outermost weight of valve plate rotary shaft being arranged on valve body, spreadet spreadet wheel
After unblock, valve plate relies on weight return to close valve, and torsion spring power is used for compressing valve plate and seals.
Preferably, described positioning turntable circumferentially has hole, multiple location, by torsion spring being inserted in different holes, location,
Different torsion spring twisting resistances is set.
Described valve body is butterfly valve structure, flap valve form, valve plate also can be used to be fixed in rotating shaft and concomitant rotation.Its
In, one end axle installs toothed disc and lockable mechanism that can be manually opened, and other end axle installs Guan Bi torsion spring and weight-driven.Valve
Body is sealed into the soft sealing of contact.Described valve through manually opened, torsion spring compressed generation moment of torsion or weight lifting, toothed disc
Locking；Locking structure unlocks, and torsion spring drives valve plate revolution, closes valve.Torsion spring torque is delivered to rotating shaft by positioning turntable, fixed
Position wheel disc circumferential position is disposed with hole, location, it is simple to the debugging of torsion spring twisting resistance is regulated by engineering site.
Compared with the existing technology, the present invention for gas blend passive machinery cut soon valve have significant technology effect
Really: the passive valve of cutting soon for gas blending of the present invention makes toothed disc open by rocking arm rotation, relies on malleation bleed to push away
Dynamic diaphragm drives locking rod spreadet spreadet wheel dish, makes valve plate be positioned at opening；When blower export gas decompression, diaphragm is multiple
Driving multi-connecting-rod mechanism to unlock toothed disc under the effect of position spring, valve plate is at Guan Bi torsion spring torque effect ShiShimonoseki valve closing door.Valve
Running drives not against external energy, it is achieved that extremely low concentration ventilating gas and higher concentration mash gas extraction blended
Journey non-passive safety cutting-off controlling, uses the method for purely mechanic transmission to improve the reliability of valve, it is ensured that oxidation unit safety
Run.The Core Feature of valve is that secure synchronization is cut off, passive form, purely mechanic action, and process gets involved without extra power,
Avoid the unreliability of the complication system being made up of PLC and electricity, liquid, gas drive mechanism；Bleed is used for locking valve, reduces people
For participation can be opened, it is to avoid maloperation.
Accompanying drawing explanation
Fig. 1 is that the passive machinery for gas blending representing the present invention cuts valve soon for ventilating gas and mash gas extraction
Blending procedure schematic diagram；
Fig. 2 is that valve arrangement schematic diagram cut soon by the passive machinery for gas blending of the present invention；
Fig. 3 is on and lockable mechanism schematic diagram；
Fig. 4 is positioning turntable schematic diagram.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, develop simultaneously embodiment referring to the drawings, right
The present invention further describes.It should be noted that the following stated is only presently preferred embodiments of the present invention, the most therefore limit
Determine protection scope of the present invention.
It should be noted that the implementation not illustrating in accompanying drawing or describing, for ordinary skill people in art
Form known to Yuan.Additionally, the direction term mentioned in following example, such as " on ", D score, "front", "rear", " left ",
" right ", " top ", " end " etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate not for limiting
The present invention.
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings:
As it is shown in figure 1, for realizing more preferable energy-saving and emission-reduction and Energy harvesting, in ventilating gas oxidation processes often
Needing to mix the mash gas extraction of certain higher concentration, (such as methane concentration is 8-30%'s to the mash gas extraction gas of higher concentration
Mash gas extraction) cut valve 17 soon enter ventilating gas pipeline blending section 18 through safety regulating valve group 16, passive machinery, the most relatively low
The mash gas extraction gas (such as methane concentration is the mash gas extraction of 0.2-0.3%) of concentration is also passed into ventilating gas pipeline and blends section
18, the mash gas extraction gas of higher concentration and the mash gas extraction gas of low concentration are carried out in ventilating gas pipeline blends section 18
Blending, the methane gas after blending enters oxidation unit 21 process through dehydration dedusting pretreatment section 19, aerator 20 supercharging, non-energy
Motivation tool is cut valve 17 soon and is ensured the safety of blending procedure.
As in Figure 2-4, the present invention for gas blend passive machinery cut valve 17 soon, including air entraining pipe 1, air chamber 2,
Non-metal elastic diaphragm 3 forms with back-moving spring 4, multi-connecting-rod mechanism, lockable mechanism 7, valve body 10, Guan Bi torsion spring 11 etc..
Arranging non-metal elastic diaphragm 3 in air chamber 2, air chamber 2 is divided into the upper chamber of Hu Bu UNICOM by non-metal elastic diaphragm 3
201 and lower chamber 202, wherein, one end UNICOM of upper chamber 201 and air entraining pipe 1, the other end of air entraining pipe 1 and system superintendent road
The outlet UNICOM of aerator 20, lower chamber 202 and atmosphere.The center of nonmetal diaphragm 3 arranges a connection piece 31, should
The top of connector 31 is connected with the back-moving spring 4 being arranged on air chamber 2 top through the roof of air chamber 2 by a rod member, resets
The top of spring 4 is provided with adjustable pretension bolt 15.The bottom of connector 31 by another rod member through air chamber 2 diapire with set
Put the connecting rod 5 at the multi-connecting-rod mechanism of air chamber 2 bottom hinged；Multi-connecting-rod mechanism includes multiple connecting rod 5 and several rotation bars 6,
Connected by universal joint between connecting rod 5 and rotation bar 6, rotate bar 6 for amplifying active force and the conversion connecting rod of nonmetal diaphragm 3
Action direction.
Valve body 10 can be such as butterfly valve structure, also can use flap valve form, according to flap valve form, two side shafts
Lengthwise position need to suitably adjust.One end axle of valve body 10 is installed and is opened and lockable mechanism 7, and other end axle installs close mechanism.Valve
Body 10 be sealed into the soft sealing of contact.Wherein, open and lockable mechanism 7 includes locking rod 8, spreadet spreadet wheel dish 9 and inserts
Formula rotates hand arm 14, and spreadet spreadet wheel dish 9 is disposed with ferrum or the rustless steel wheel disc of the locking gear teeth for outer rim, outside spreadet spreadet wheel dish 9
Connecing plug-in type and rotate hand arm 14, plug-in type rotates hand arm 14 can be with manually opened valve body 10.The upper end of locking rod 8 with connect more
Linkage connects, and lower end abuts with the locking gear teeth of spreadet spreadet wheel dish 9 outer rim, can pin toothed disc 9.Close mechanism can be
Torsion spring device and weight-driven.Torsion spring device includes torsion spring 11 and positioning turntable 12, and positioning turntable 12 circumferential position is disposed with many
Hole, individual location, torsion spring 11 one end fixes, and the other end is connected with the hole, location of positioning turntable 12, and torsion spring 11 is by producing after valve opening
Raw moment of torsion drives positioning turntable 12 to drive valve body 10 to rotate, and then closes valve, by being connected to different by torsion spring 11
In hole, location, it is simple to the debugging of torsion spring twisting resistance is regulated by engineering site.Weight is arranged on the valve plate rotary shaft outermost of valve body,
After spreadet spreadet wheel unlocks, valve plate relies on weight return to close valve, and torsion spring power is used for compressing valve plate and seals.
The present invention passive mechanical cutting valve work time, air entraining pipe 1 from aerator 20 exit bleed to upper chamber 201,
The pretension bolt 15 on regulation back-moving spring 4 top so that it is pretightning force, the elastic force of nonmetal diaphragm 3 are drawn with aerator 20 malleation
The pressure reduction thrust that gas and lower chamber 202 air produce reaches balance.As, when aerator 20 outlet reaches 3kPa, nonmetal diaphragm 3
Under back-moving spring 4 pretightning force and pressure reduction thrust, by bearing, multi-connecting-rod mechanism driving force and displacement, it is ensured that locking
Bar 8 screens spreadet spreadet wheel dish 9.
Wherein, the lever construction that connecting rod 5 is formed by fulcrum 1, amplify downward thrust, should by fulcrum 2 23
The power amplified is delivered to locking rod 8.Before locking rod 8 action, rotate hand arm 14 rotary teeth wheel disc 9 by plug-in type, open
Open valve.The teeth groove of toothed disc 9 circumference, spreadet spreadet wheel dish 9 are blocked in locking rod 8 front end.Spreadet spreadet wheel dish 9, valve plate and torsion spring machine
Structure is coaxially arranged.While valve opening, toothed disc 9 synchronizes to drive the positioning turntable 12 in torsion spring mechanism to rotate so that torsion spring
11 create a twisting resistance closing valve.
When because of the reason blower export decompression such as the system failure, power failure, i.e. ventilating gas air in pipeline flow reduction
Or disappear, act on the difference force on nonmetal diaphragm 3 and reduce or disappear, under the effect of back-moving spring 4 power, linkage band
Dynamic locking rod 8 moves upward, and rotary teeth wheel disc 9 unlocks, and now, under torsion spring 11 twisting resistance effect, positioning turntable 12 drives valve
Plate 10 rotates closes valve, cuts off mash gas extraction passage.
The passive mechanical cutting valve Core Feature of the present invention be to realize higher concentration mash gas extraction safety, quickly and
Cutting off with ventilating gas linkage, cutting-off process instructs not against extra power and control system, passive form, machine driving,
This is most important for processing in inflammable and explosive dangerous gas industrial circle such as grade.Additionally, though this valve uses artificial unlatching, but
When blower export no pressure (system blackout, scram etc.), artificial unlatching can not locking valve so that it is be difficult to be in out
Open state, itself avoids, from valve mechanism, the hidden danger that artificial maloperation brings.Gate principle is simple, and compact conformation is easily processed
Manufacture and engineering site installation and debugging, can effectively solve regenerative oxidation device and process the potential safety hazard blending methane gas.
Skilled person will appreciate that of the industry, the present invention is not restricted to the described embodiments, above-described embodiment and explanation
The principle that the present invention is simply described described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements both fall within scope of the claimed invention.Claimed scope
Defined by appending claims and equivalent thereof.
Claims (9)
1. cut a valve soon for the passive of gas blending, including air entraining pipe, air chamber, multi-connecting-rod mechanism and valve body, its feature
It is,
--arranging non-metal elastic diaphragm in described air chamber, air chamber is divided into two of Hu Bu UNICOM by described non-metal elastic diaphragm
Plenum space, wherein, a plenum space and one end UNICOM of air entraining pipe, the other end of described air entraining pipe connects barotropic gas pipe
Road, another plenum space and atmosphere,
--arranging a connection piece on described non-metal elastic diaphragm, described connector one end passes a wall and the setting of air chamber
One end of the back-moving spring outside air chamber connect, the other end of described connector through air chamber another wall be arranged on gas
The multi-connecting-rod mechanism of outdoor connects,
--one end of described valve body arranges unlatching and lockable mechanism, and the other end arranges close mechanism, wherein,
Described unlatching and lockable mechanism include that locking rod, spreadet spreadet wheel dish and rocking arm, the outer rim of described spreadet spreadet wheel dish are disposed with
The locking gear teeth, the card of spreadet spreadet wheel dish arranges described rocking arm, and described rocking arm is in order to manually opened valve body, one end of locking rod
Being connected with multi-connecting-rod mechanism, the other end abuts with the locking gear teeth of spreadet spreadet wheel dish, in order to pin toothed disc.
The most passive cut valve soon, it is characterised in that described resilient nonmetallic diaphragm, in said two
Produce displacement under plenum space differential pressure action, and drive multi-connecting-rod mechanism；The other end of described back-moving spring arranges pretightning force and adjusts
Joint bolt.
The most passive cut valve soon, it is characterised in that described multi-connecting-rod mechanism include several connecting rods and
The rotation bar that several quantity are suitable, described multi-connecting-rod mechanism is in order to realize the amplification of described resilient nonmetallic diaphragm motive force
Conversion with action direction.
The most passive cut valve soon, it is characterised in that the rotation bar that several quantity described are suitable
In, at least one rotates bar amplifies lever as active force, and at least one rotates bar as action direction shifter lever.
The most passive cut valve soon, it is characterised in that described valve body to be sealed into contact soft close
Envelope, the valve plate in described valve body is butterfly valve structure or flap valve.
The most passive cut valve soon, it is characterised in that described close mechanism includes torsion spring device, described
Torsion spring device includes torsion spring and positioning turntable, and one end is fixed on valve body, and the other end inserts in the hole, location of positioning turntable, uses
In the valve plate closed action produced in valve body.
The most passive cut valve soon, it is characterised in that described close mechanism also includes being arranged on valve body
The outermost weight of valve plate rotary shaft, after spreadet spreadet wheel unlocks, valve plate relies on weight return to close valve, and torsion spring power is used for into one
Step compresses valve plate and seals.
The most passive cut valve soon, it is characterised in that described positioning turntable circumferentially has multiple location
Hole, by being inserted by torsion spring in different holes, location, regulates different torsion spring twisting resistances.
The most passive cut valve soon, it is characterised in that the other end UNICOM ventilating gas of described air entraining pipe
With the blower export that mash gas extraction blends system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880572.2A CN106246933B (en) | 2016-10-09 | 2016-10-09 | A kind of passive mechanical fast cut valve for gas blending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610880572.2A CN106246933B (en) | 2016-10-09 | 2016-10-09 | A kind of passive mechanical fast cut valve for gas blending |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246933A true CN106246933A (en) | 2016-12-21 |
| CN106246933B CN106246933B (en) | 2018-12-14 |
Family
ID=57612506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610880572.2A Active CN106246933B (en) | 2016-10-09 | 2016-10-09 | A kind of passive mechanical fast cut valve for gas blending |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246933B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838198Y2 (en) * | 1976-04-06 | 1983-08-29 | 日立造船株式会社 | Butterfly valve opening/closing device |
| US5887823A (en) * | 1997-06-26 | 1999-03-30 | Hughes Electronics Corporation | Gimbal mechanism and gearbox for same |
| CN2828465Y (en) * | 2005-10-01 | 2006-10-18 | 南通市神通特种阀门工程技术研究中心有限公司 | Electric butterfly valve of closing when power-cut |
| CN103148259A (en) * | 2013-03-07 | 2013-06-12 | 世林（漯河）冶金设备有限公司 | Furnace top bleeding valve with safety protection function |
| CN204677802U (en) * | 2015-05-20 | 2015-09-30 | 浙江威腾阀门有限公司 | There is the on-off seat globe valve of quick locking structure |
-
2016
- 2016-10-09 CN CN201610880572.2A patent/CN106246933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838198Y2 (en) * | 1976-04-06 | 1983-08-29 | 日立造船株式会社 | Butterfly valve opening/closing device |
| US5887823A (en) * | 1997-06-26 | 1999-03-30 | Hughes Electronics Corporation | Gimbal mechanism and gearbox for same |
| CN2828465Y (en) * | 2005-10-01 | 2006-10-18 | 南通市神通特种阀门工程技术研究中心有限公司 | Electric butterfly valve of closing when power-cut |
| CN103148259A (en) * | 2013-03-07 | 2013-06-12 | 世林（漯河）冶金设备有限公司 | Furnace top bleeding valve with safety protection function |
| CN204677802U (en) * | 2015-05-20 | 2015-09-30 | 浙江威腾阀门有限公司 | There is the on-off seat globe valve of quick locking structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246933B (en) | 2018-12-14 |
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