CN206129590U - Minimum flow valve that is used for feed valve that leaks in preventing - Google Patents
Minimum flow valve that is used for feed valve that leaks in preventing Download PDFInfo
- Publication number
- CN206129590U CN206129590U CN201621083311.XU CN201621083311U CN206129590U CN 206129590 U CN206129590 U CN 206129590U CN 201621083311 U CN201621083311 U CN 201621083311U CN 206129590 U CN206129590 U CN 206129590U
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- China
- Prior art keywords
- valve
- rod
- valve body
- minimum flow
- seat
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a minimum flow valve that is used for feed valve that leaks in preventing relates to the flow control valve field, including minimum flow valve body and actuating mechanism, wherein minimum flow valve body includes valve body, disk seat, case and valve rod, wherein be equipped with the orifice sleeve in the valve body, be equipped with the throttle lug of labyrinth type on the orifice sleeve inner wall, the case is equipped with a plurality of throttling grooves in the middle of being located the orifice sleeve on the case, the valve rod is located the top of case, and the top of valve rod is equipped with unsteady connecting block, the mutually perpendicular between connecting block and the valve rod that floats, the last push rod that is equipped with of actuating mechanism, the end of push rod also are equipped with the unsteady connecting block of perpendicular connection, and two unsteady connecting blocks are parallel connection each other. The top of disk seat is equipped with sealed the pad, the valve rod passes sealed the pad. This valve adopts the hierarchical way that steps down, after multistage throttle, has not only reduced the velocity of flow, has reduced the wash away dynamics of fluid to the valve, has avoided production cavitation again.
Description
Technical field
This utility model is related to flow control valve field, and in particular to a kind of minimum discharge of the water supply valve of anti-internal hemorrhage due to trauma
Valve.
Background technology
Minimum flow regulating valve is also known as feed pump recycle valve.In power plant, it is arranged on feed pump exit, is connected to and removes
Oxygen device.Feed pump suctions out water from oxygen-eliminating device and is sent to.To prevent feed pump overheated and preventing cavitation, the stream of feed pump
Amount all must not drop below under any circumstance the safe traffic of some regulation, that is, minimum discharge.When feedwater needs flow
During very little, such as during steam turbine trip, minimum flow valve need to be in time opened, a part of water under high pressure is back to deoxygenation by pump discharge
Device, to ensure the safe operation of feed pump.
The valve of ordinary construction, because not taking effective water saving measures, when fluid passes through valve, speed cannot effectively subtract
Little, while valve is seriously washed away by fluid, the static pressure after valve is strongly reduced, and serious cavitation destruction occurs, so that valve
Door is scrapped in a short time.Therefore the method for classification blood pressure lowering can be passed through, after multi-level throttle, flow velocity is not only reduced, is reduced
Fluid washes away dynamics to valve, turn avoid generation cavitation cavitation.
The content of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of water supply valve of anti-internal hemorrhage due to trauma most
Low discharge valve.
The technical problem that this utility model is solved can employ the following technical solutions to realize：A kind of anti-internal hemorrhage due to trauma for giving
The minimum flow valve of water valve, including minimum discharge valve body and actuator, wherein minimum discharge valve body include valve body, valve
Seat, valve element and valve rod, wherein being provided with throat bushing in the valve body, throat bushing inwall is provided with the throttling projection of labyrinth type, described
Valve element is located in the middle of throat bushing, and valve element is provided with some throttling channels, and the valve rod is located at the top of valve element, and the top of valve rod is provided with
Floating connection block, is mutually perpendicular between floating connection block and valve rod, and the actuator is provided with push rod, and the end of push rod also sets
There are floating connection block connected vertically, two floating connection block parallel connections each other.
Preferably, the top of the valve seat is provided with sealing gasket, and the valve rod passes through sealing gasket.
Preferably, the valve body is provided with attachment means, and attachment means include connecting seat and the connecting rod on connecting seat, its
Middle connecting seat is connected in water-supply valve, and connecting rod is connected on the surface of valve body.
Preferably, the connecting rod has four, wherein two connecting rods are connected on the valve body, two connections in addition
On the valve seat.
Preferably, the connecting seat is provided with shrinkage pool, and the bottom of shrinkage pool is provided with spring, and the connecting rod is connected to spring
On.
Beneficial effect is：This valve takes new-type multistage labyrinth type throat bushing, labyrinth type throttling to avoid cavitation cavitation in valve,
Fluid is constantly changed, is liquidated by continuous several times, collided by sinuate labyrinth channel, direction, effectively consumes energy,
The destruction that the high speed of reduction fluid is washed away and flash distillation cavitation is caused to trim.Multiple protection against erosion throttling channels are set up on valve element, no
Can only again serve to change fluid flow state, the effect of coutroi velocity, and anti-sticking function can be improved.If any little weldering
The solid particles such as slag, can enter throttling channel, prevent valve bite valve element spigot surface.The floating that is connected by of push rod and valve rod connects
The form for connecing, this ensures that theres the vertical movement of push rod and valve rod.Avoid and operation is caused because of push rod and valve rod decentraction
In bite or sealing surface unbalance stress caused by between clearance flow.Additionally, attachment means are easy to fix on this valve, while being easy to tear open
Unload.The structure of connecting rod causes this valve more stable, and the spring structure in connecting rod can play certain shockproof effect,
So that the more preferable protection against erosion of this valve.
Description of the drawings
Fig. 1 is a kind of structural representation of the minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma of this utility model；
Fig. 2 is a kind of side view of the minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma of this utility model；
Wherein 1, valve body；2, valve seat；3, valve rod；4, valve element；5, throat bushing；6, throttling channel；7, actuator；8, push rod；
9, floating connection block；10, connecting seat；11, connecting rod；12, shrinkage pool；13, spring.
Specific embodiment
Describe preferred implementation of the present utility model in detail below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 2 show a kind of specific embodiment party of the minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma of this utility model
Formula：A kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma, including minimum discharge valve body and actuator 7, wherein minimum
Flow valve body includes valve body 1, valve seat 2, valve element 4 and valve rod 3, wherein being provided with throat bushing 5, the inwall of throat bushing 5 in the valve body 1
The throttling projection of labyrinth type is provided with, the valve element 4 is located in the middle of throat bushing 5, and valve element 4 is provided with some throttling channels 6, the valve
Bar 3 is located at the top of valve element 4, and the top of valve rod 3 is provided with floating connection block 9, is mutually perpendicular between floating connection block 9 and valve rod 3,
The actuator 7 is provided with push rod 8, and the end of push rod 8 also is provided with floating connection block 9 connected vertically, two floating connections
The parallel connection each other of block 9.The top of the valve seat 2 is provided with sealing gasket, and the valve rod 3 passes through sealing gasket.
It should be noted that the valve body 1 is provided with attachment means, attachment means are included on connecting seat 10 and connecting seat 10
Connecting rod 11, wherein connecting seat 10 is connected in water-supply valve, and connecting rod 11 is connected on the surface of valve body 1.The connecting rod
11 have four, wherein two connecting rods 11 are connected on the valve body 1, in addition two are connected on the valve seat 2.The company
Joint chair 10 is provided with shrinkage pool 12, and the bottom of shrinkage pool 12 is provided with spring 13, and the connecting rod 11 is connected on spring 13.
Based on above-mentioned, this valve takes new-type multistage labyrinth type throat bushing 5, labyrinth type throttling to avoid cavitation cavitation in valve,
Fluid is constantly changed, is liquidated by continuous several times, collided by sinuate labyrinth channel, direction, effectively consumes energy,
The destruction that the high speed of reduction fluid is washed away and flash distillation cavitation is caused to trim.Multiple protection against erosion throttling channels 6 are set up on valve element 4,
Not only can again serve to change fluid flow state, the effect of coutroi velocity, and anti-sticking function can be improved.If any little
The solid particles such as welding slag, can enter throttling channel 6, prevent the spigot surface of valve bite valve element 4.Push rod 8 and valve rod 3 are connected by
The form of floating connection, this ensures that theres the vertical movement of push rod 8 and valve rod 3.Avoid because of push rod 8 and the decentraction of valve rod 3
And clearance flow between causing caused by operating bite or sealing surface unbalance stress.Additionally, attachment means are easy to fix on this valve,
It is simultaneously easy to disassemble.The structure of connecting rod 11 causes this valve more stable, and the structure of spring 13 in connecting rod 11 can be played
Certain shockproof effect so that the more preferable protection against erosion of this valve.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure made using this utility model description and accompanying drawing content or equivalent flow conversion, or be directly or indirectly used in
Other related technical fields, are included in the same manner in scope of patent protection of the present utility model.
Claims (5)
1. a kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma, including minimum discharge valve body and actuator, wherein most
Low discharge valve body includes valve body, valve seat, valve element and valve rod, it is characterised in that：Throat bushing is provided with the valve body, in throat bushing
Wall is provided with the throttling projection of labyrinth type, and the valve element is located in the middle of throat bushing, and valve element is provided with some throttling channels, the valve rod
Positioned at the top of valve element, the top of valve rod is provided with floating connection block, is mutually perpendicular between floating connection block and valve rod, the execution
Mechanism is provided with push rod, and the end of push rod also is provided with floating connection block connected vertically, and two floating connection blocks are put down each other
Row connection.
2. a kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma according to claim 1, it is characterised in that：The valve seat
Top be provided with sealing gasket, the valve rod passes through sealing gasket.
3. a kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma according to claim 1, it is characterised in that：The valve body
Attachment means are provided with, attachment means include connecting seat and the connecting rod on connecting seat, and wherein connecting seat is connected in water-supply valve,
Connecting rod is connected on the surface of valve body.
4. a kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma according to claim 3, it is characterised in that：The connection
Bar has four, wherein two connecting rods are connected on the valve body, in addition two are connected on the valve seat.
5. a kind of minimum flow valve of the water supply valve of anti-internal hemorrhage due to trauma according to claim 3 or 4, it is characterised in that：It is described
Connecting seat is provided with shrinkage pool, and the bottom of shrinkage pool is provided with spring, and the connecting rod is connected on spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083311.XU CN206129590U (en) | 2016-09-27 | 2016-09-27 | Minimum flow valve that is used for feed valve that leaks in preventing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083311.XU CN206129590U (en) | 2016-09-27 | 2016-09-27 | Minimum flow valve that is used for feed valve that leaks in preventing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129590U true CN206129590U (en) | 2017-04-26 |
Family
ID=58571383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621083311.XU Expired - Fee Related CN206129590U (en) | 2016-09-27 | 2016-09-27 | Minimum flow valve that is used for feed valve that leaks in preventing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129590U (en) |
-
2016
- 2016-09-27 CN CN201621083311.XU patent/CN206129590U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20190927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |