CN106949259A - Hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly - Google Patents
Hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly Download PDFInfo
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- CN106949259A CN106949259A CN201710350165.5A CN201710350165A CN106949259A CN 106949259 A CN106949259 A CN 106949259A CN 201710350165 A CN201710350165 A CN 201710350165A CN 106949259 A CN106949259 A CN 106949259A
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- China
- Prior art keywords
- sealing ring
- elastic metallic
- type elastic
- nonmetallic
- oil
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Classifications
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention discloses a kind of hydroturbine water intake ball valve oil pressure input and exits L-type metal sealing certainly, sliding surface sets the nonmetallic sealing ring of twice on L-type elastic metallic movement sealing ring, lower slider face sets the nonmetallic sealing ring of twice, fixed metal-seated is bolted on valve, when the pressure oil cavity that L-type elastic metallic is moved on front side of sealing ring puts into high pressure fuel source, it is moved in sliding cavity, is pressed into contact with reaching sealing effectiveness with fixed metal-seated；When the nonmetallic sealing ring set on L-type elastic metallic movement sealing ring is such as damaged, the water or oil leaked out can drain into outside atmosphere by sensing water content mixed in oil pod apertures thereon through air chamber；After the high pressure fuel source that L-type elastic metallic moves pressure oil cavity on front side of sealing ring is lost, L-type elastic metallic movement sealing ring can be automatically exited under the water pressure of back lower.
Description
Technical field：
A kind of hydroturbine water intake ball valve oil pressure input involved in the present invention exits L-type metal sealing certainly；
Background technology：
At present, middle and high head hydroelectric power plant water inlet pipe carries out flow cavitation result, especially water-storage electricity using water intake ball valve
Stand, the average daily on-off times of its water intaking valve are more.Traditional water intake ball valve sealing means are as shown in figure 1, the metal movement sealing used
Ring, after ball valve valve is closed, the metal for putting into water-in and water-out side by hydraulic drives moves the fixation on sealing ring, with valve
Metal-seated contact reaches close water sealing effect, the input of metal movement sealing ring, exits and is required to realize by hydraulic drives.
In recent years, required according to owner, part power station is using the mobile sealing ring of hydraulic oil driving, it is necessary to consider to move sealing ring
On nonmetallic bad seals when, in fact it could happen that string oil, string water phenomenon, hydraulic oil enter ball valve in cross aquaporin, produce
Environmental pollution, or water enter oil pocket, cause whole oil hydraulic system sensing water content mixed in oil, and traditional metal movement sealing ring can not meet this
It is required that.Simultaneously as power head is higher, such as sealing system effect is not good there is leak, and this leak belongs to high-speed jet, can add
The cavitation erosion of fast flow passage components, increases maintenance cost；Meanwhile, usual water intake ball valve upstream side during conventional power plant unit maintenance
Do not emptied in penstock, retention has press water, such as sealing water leakage is larger, not only causes water resource waste, can also influence
The normal service of unit, safety, economical operation on power station produce influence.Therefore, design one kind can be suitably used for oil pressure actuated and
The mobile sealing ring of favorable sealing property is extremely urgent.
The content of the invention：
Simple it is an object of the present invention to provide a kind of structure, no complex component is easily installed, the hydroturbine water intake of low cost of manufacture
Ball valve oil pressure input exits L-type metal sealing certainly.
The present invention seeks to what is be achieved through the following technical solutions：Valve body (1) cooperatively forms slip with guide flange (11)
Chamber (13), L-type elastic metallic movement sealing ring (10) is installed in sliding cavity (13), L-type elastic metallic movement sealing ring (10)
Upper two table tops of sliding surface set the first nonmetallic sealing ring (8), the 3rd nonmetallic sealing ring (9) respectively, and L-type elastic metallic is moved
Rotary packing ring (10) two, lower slider face table top sets the second nonmetallic sealing ring (7), the 4th nonmetallic sealing ring (15) respectively,
Fixed metal-seated (4) is fixed on valve (2) by bolt (3), L-type elastic metallic movement sealing ring (10) back lower
For air chamber (17), air chamber (17) is connected with extraneous air, L-type elastic metallic movement sealing ring (10) upper back and excessively stream
Passage (12) is connected, and pressure oil cavity (14) is connected with high pressure fuel source on front side of L-type elastic metallic movement sealing ring (10).
First nonmetallic sealing ring (8), the second nonmetallic sealing ring (7) and the 3rd nonmetallic sealing ring (9), the 4th non-gold
Sensing water content mixed in oil pod apertures (16), L-type elastic metallic movement sealing ring (10) and fixed metal sealing are provided between category sealing ring (15)
Secondary (4) contact surface is disc (6).
A kind of described hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly, it is characterized in that：Fixed metal is close
It is sphere (5) to move sealing ring (10) contact surface with L-type elastic metallic in envelope secondary (4), and the centre of sphere of sphere (5) is in valve (2)
The heart.
Operation principle：
After the shutdown of the hydraulic turbine, ball valve valve is closed, putting into mobile sealing by hydraulic operation reaches completely cut off current
Effect, the sealing system formed between fixed metal-seated and metal movement sealing must possess reliable sealing, prevent leak
Amount is big to be caused water resource waste and produces the harm such as jet.
Hydropower station water inlet ball valve oil pressure of the present invention input from exit L-type elastic metallic sealing arrangement the entering of water intake ball valve,
Water outlet side, valve is rotated to closed position, the pressure oil cavity input hydraulic oil on front side of L-type elastic metallic movement sealing ring
Source, L-type elastic metallic movement sealing ring is moved in sliding cavity, is pressed into contact with fixed metal-seated, is gone into elastic compensating
Sealing system；The nonmetallic sealing ring set on L-type elastic metallic movement sealing ring is such as damaged, the water leaked out or oily meeting
By the sensing water content mixed in oil pod apertures on L-type elastic metallic movement sealing ring outside atmosphere is drained into through air chamber；When L-type elastic metallic is moved
After the high pressure fuel source of pressure oil cavity is lost on front side of rotary packing ring, L-type elastic metallic movement sealing ring can back lower hydraulic pressure
Automatically exited under power.
Technique effect：
As shown in figure 1, the metal movement sealing ring that traditional water intake ball valve sealing means are used, after ball valve valve is closed,
The metal for putting into water-in and water-out sides by hydraulic drives moves sealing ring, contacted with the fixation metal-seated on valve reach it is close
Water sealing effect, the input of metal movement sealing ring, exits and is required to realize by hydraulic drives.
In recent years, part power station drives mobile sealing ring, it is necessary to consider to move nonmetallic close on sealing ring using hydraulic oil
When envelope is damaged, in fact it could happen that string oil, string water phenomenon, the aquaporin of crossing that hydraulic oil enters in ball valve, generation environment pollution, or water
Into oil pocket, cause whole oil hydraulic system sensing water content mixed in oil, traditional metal movement sealing ring can not meet this requirement.Meanwhile, by
Higher in power head, such as sealing system effect is not good there is leak, and this leak belongs to high-speed jet, can accelerate flow passage components
Cavitation erosion, increases maintenance cost；Meanwhile, during conventional power plant unit maintenance in the penstock of usual water intake ball valve upstream side not
Emptying, retention has press water, and such as sealing water leakage is larger, not only causes water resource waste, can also influence the normal inspection of unit
Repair, the safety, economical operation on power station produce influence.
Hydropower station water inlet ball valve oil pressure input of the present invention is from the sealing of L-type elastic metallic is exited, and its is simple in construction, without complicated portion
Part, is easily installed, low cost of manufacture, can be widely applied to drive using hydraulic oil on the ball valve of mobile sealing ring.
The nonmetallic sealing ring set on L-type elastic metallic movement sealing ring in the present invention is such as damaged, and is leaked out
Water or oil the sensing water content mixed in oil pod apertures on sealing ring can be moved by L-type elastic metallic and through air chamber drain into outside atmosphere, effectively
The aquaporin of crossing for avoiding hydraulic oil from entering in ball valve, generation environment pollution, or water enter oil pocket, cause whole oil hydraulic system oil mixed
Water.
Because L-type elastic metallic movement sealing ring upper back is air chamber, connected with extraneous air, L-type elastic metallic
The characteristics of mobile sealing ring back lower is connected with flow channels, when L-type elastic metallic moves the high pressure fuel source on front side of sealing ring
After loss, L-type elastic metallic movement sealing ring can be automatically exited under the water pressure of back lower, the whole ball that this mode simplifies
The control system of valve, also saves operation oil, is conducive to the processing safety in whole power station.
Meanwhile, L-type elastic metallic movement sealing ring possesses enough elasticity, and due to fixed metal-seated and L-type bullet
Property metal movement sealing ring using ball valve face arc surface contact sealing means, under the driving of high pressure fuel source, can compensate
The deformation that fixed metal-seated is produced with valve under hydraulic pressure, goes into elastic compensating sealing system, strengthens sealing effectiveness, reduction
Ball valve water leakage, and due to non-metal sealing, improve service life.
The effect that the present invention reaches：
1st, this inventive structure can be driven on the ball valve of mobile sealing ring extensively using with hydraulic oil, the movement of L-type elastic metallic
Sealing ring possesses mistake oil pressure from exit function, saves once-through operation oil；
When the 2nd, driving L-type elastic metallic movement sealing ring using hydraulic oil, due to being provided with sensing water content mixed in oil pod apertures, effectively keep away
Exempt from hydraulic oil into the aquaporin of crossing in ball valve, generation environment pollution, or water enter oil pocket, cause whole oil hydraulic system oil mixed
Water；
3rd, fixed metal-seated moves the contact sealing side that sealing ring faces arc surface using ball valve with L-type elastic metallic
Formula, possesses elastic compensating function, can effectively solve due to the sealing function when valve that various errors are caused closes not in place；
4th, the control system of the whole ball valve simplified；
5th, using metal sealing, service life is improved；
6th, characteristics of compact layout, installing space is smaller, is easily installed；
7th, simplify the structure, relatively low manufacturing cost.
Brief description of the drawings：
Fig. 1：Traditional water intake ball valve sealing means structure chart
Fig. 2：The present invention is in the front view of installment state
Fig. 3：Metal movement sealing ring of the present invention is in the front view of input state
Fig. 4：Metal movement sealing ring of the present invention is in the front view of non-input state
Fig. 5：The present invention is in the front view of nonmetallic sealing ring distress condition
Embodiment：
As shown in Fig. 2 the present invention is a kind of hydroturbine water intake ball valve oil pressure input from exiting L-type metal sealing, valve body 1 with
Guide flange 11 cooperatively forms sliding cavity 13, and L-type elastic metallic movement sealing ring 10 is installed in sliding cavity 13, L-type elasticity gold
Two table tops of sliding surface set the first nonmetallic sealing ring 8, the 3rd nonmetallic sealing ring 9, L-type respectively on the mobile sealing ring 10 of category
Two, 10 lower slider face of elastic metallic movement sealing ring table top sets the second nonmetallic sealing ring 7, the 4th nonmetallic sealing respectively
Circle 15, fixed metal-seated 4 is fixed on valve 2 by bolt 3, and the L-type elastic metallic movement back lower of sealing ring 10 is
Air chamber 17, air chamber 17 is connected with extraneous air, and the L-type elastic metallic movement upper back of sealing ring 10 connects with flow channels 12
Logical, the L-type elastic metallic movement front side pressure oil cavity 14 of sealing ring 10 is connected with high pressure fuel source.
A kind of described hydroturbine water intake ball valve oil pressure puts into and exits L-type metal sealing certainly, the first nonmetallic sealing ring 8,
Sensing water content mixed in oil pod apertures are provided between the second nonmetallic sealing ring 9 of nonmetallic sealing ring 7 and the 3rd, the 4th nonmetallic sealing ring 15
16, L-type elastic metallic movement sealing ring 10 is disc 6 with the fixed contact surface of metal-seated 4.
A kind of described hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly, it is characterized in that：Fixed metal is close
It is sphere 5 to move the contact surface of sealing ring 10 with L-type elastic metallic in envelope pair 4, and the centre of sphere of sphere 5 is the center of valve 2.
As shown in figure 3, valve 2 is closed, the front side pressure oil cavity 14 of L-type elastic metallic movement sealing ring 10 and height
After the connection of force feed source, under oil pressure effect, L-type elastic metallic movement sealing ring 10 prolongs direction of arrow movement throwing in sliding cavity
Enter, air chamber 17 is vented into air, after L-type elastic metallic movement sealing ring 10 moves design runlength L, with fixed metal
Sealing pair 4 is contacted, and disc 6 contacts to form Elastic Contact sealing surface with ball valve 5, reaches that water shutoff is acted on.
As shown in figure 4, valve 2 is closed, the oil pressure of 10 front side pressure oil cavity of L-type elastic metallic movement sealing ring 14
After loss, under the effect of the internal water pressure of flow channels 12, L-type elastic metallic movement sealing ring 10 prolongs arrow in sliding cavity 13 automatically
The movement of head direction is exited, the air-breathing from air of air chamber 17, when L-type elastic metallic movement sealing ring 10 moves design runlength L
Afterwards, contact spacing with guide flange 10, complete to exit action certainly.
As shown in figure 5, when the first nonmetallic sealing ring the 8, the 3rd that L-type elastic metallic moves sliding surface on sealing ring 10 is non-
Metal o-ring 9 or lower slider face set the second nonmetallic sealing ring 7, the 4th nonmetallic sealing ring 15 to damage, L-type elastic metallic
The hydraulic oil or back lower of the mobile front side pressure oil cavity 14 of sealing ring 10 connect water under high pressure with flow channels 12 and can bypass damage
Bad nonmetallic sealing ring, introduces air chamber 17, and then will leak out liquid from air chamber 17 and drain into by sensing water content mixed in oil pod apertures 16
Air, effectively prevent hydraulic oil into the flow channels 12 in ball valve, generation environment pollution, or water enter oil pocket 14, caused
Whole oil hydraulic system sensing water content mixed in oil.
Claims (3)
1. a kind of hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly, it is characterized in that：Valve body (1) and guide flange
(11) sliding cavity (13) is cooperatively formed, L-type elastic metallic movement sealing ring (10) is installed in sliding cavity (13), L-type elasticity gold
Two table tops of sliding surface set the first nonmetallic sealing ring (8), the 3rd nonmetallic sealing ring respectively on the mobile sealing ring (10) of category
(9), L-type elastic metallic movement sealing ring (10) two, lower slider face table top sets the second nonmetallic sealing ring (7), the 4th respectively
Nonmetallic sealing ring (15), fixed metal-seated (4) is fixed on valve (2) by bolt (3), the movement of L-type elastic metallic
Sealing ring (10) back lower is air chamber (17), and air chamber (17) is connected with extraneous air, L-type elastic metallic movement sealing ring
(10) upper back is connected with flow channels (12), pressure oil cavity (14) and height on front side of L-type elastic metallic movement sealing ring (10)
Force feed source is connected.
2. a kind of hydroturbine water intake ball valve oil pressure input according to claim 1 exits L-type metal sealing certainly, its feature
It is：It is first nonmetallic sealing ring (8), the second nonmetallic sealing ring (7) and the 3rd nonmetallic sealing ring (9), the 4th nonmetallic close
Sensing water content mixed in oil pod apertures (16), L-type elastic metallic movement sealing ring (10) and fixed metal-seated (4) are provided between seal (15)
Contact surface is disc (6).
3. a kind of hydroturbine water intake ball valve oil pressure input according to claim 1 exits L-type metal sealing certainly, its feature
It is：It is sphere (5), the ball of sphere (5) to move sealing ring (10) contact surface with L-type elastic metallic on fixed metal-seated (4)
The heart is valve (2) center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350165.5A CN106949259A (en) | 2017-05-18 | 2017-05-18 | Hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350165.5A CN106949259A (en) | 2017-05-18 | 2017-05-18 | Hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106949259A true CN106949259A (en) | 2017-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710350165.5A Pending CN106949259A (en) | 2017-05-18 | 2017-05-18 | Hydroturbine water intake ball valve oil pressure input exits L-type metal sealing certainly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949259A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206851U (en) * | 1986-09-11 | 1987-08-19 | 哈尔滨电机厂 | Sealing device of ball valve |
| CN86210297U (en) * | 1986-12-16 | 1988-02-10 | 哈尔滨电机厂 | Stop valve with valve clack able to leave from flow |
| US20040178380A1 (en) * | 2003-02-27 | 2004-09-16 | Dirk Malischewsky | Ball cock |
| WO2006091117A1 (en) * | 2005-02-28 | 2006-08-31 | Zaklad Urzadzen Gazowniczych 'gazomet' | Ball valve with arrangement for separating sealing surfaces and corresponding method |
| CN204828905U (en) * | 2015-08-05 | 2015-12-02 | 中阀科技(长沙)阀门有限公司 | Hydraulic turbine is intake ball valve and is overhauld sealed manual mechanical lock spindle structure |
-
2017
- 2017-05-18 CN CN201710350165.5A patent/CN106949259A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206851U (en) * | 1986-09-11 | 1987-08-19 | 哈尔滨电机厂 | Sealing device of ball valve |
| CN86210297U (en) * | 1986-12-16 | 1988-02-10 | 哈尔滨电机厂 | Stop valve with valve clack able to leave from flow |
| US20040178380A1 (en) * | 2003-02-27 | 2004-09-16 | Dirk Malischewsky | Ball cock |
| WO2006091117A1 (en) * | 2005-02-28 | 2006-08-31 | Zaklad Urzadzen Gazowniczych 'gazomet' | Ball valve with arrangement for separating sealing surfaces and corresponding method |
| CN204828905U (en) * | 2015-08-05 | 2015-12-02 | 中阀科技(长沙)阀门有限公司 | Hydraulic turbine is intake ball valve and is overhauld sealed manual mechanical lock spindle structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170714 |
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| WD01 | Invention patent application deemed withdrawn after publication |