CN206802394U - A kind of full forging extraction check valve - Google Patents
A kind of full forging extraction check valve Download PDFInfo
- Publication number
- CN206802394U CN206802394U CN201720639490.9U CN201720639490U CN206802394U CN 206802394 U CN206802394 U CN 206802394U CN 201720639490 U CN201720639490 U CN 201720639490U CN 206802394 U CN206802394 U CN 206802394U
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- CN
- China
- Prior art keywords
- valve
- axostylus axostyle
- valve body
- check valve
- extraction check
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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.)
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Abstract
The utility model provides a kind of full forging extraction check valve, pneumatic means including valve body, outside valve body, axostylus axostyle, the rocking bar on axostylus axostyle and the flap on rocking bar being connected installed in valve inner and with pneumatic means, it is characterised in that：The valve body includes main part, and its main part is cube；The valve inner is all-pass gauge structure；The valve inner is provided with the valve seat coordinated with flap sealing, and the utility model thoroughly solves the problems such as high strength at high temperature cast poor performance, percent defective are high, defect is more；Valve inner is full-bore, is also minimized medium flow resistance, improves running efficiency of system.
Description
Technical field
It the utility model is related to valve field, more particularly to a kind of full forging extraction check valve.
Background technology
Extraction check valve is used for the medium pipelines such as the water of power plant's steam bleeding system or other systems, vapour, prevent steam turbine because
Pressure during load in steam turbine reduces suddenly, and steam, which flows backwards to enter in steam turbine, in extraction steam pipe and each heater causes steamer leaf
Piece is smashed, and damages the serious accident of steam turbine generator, and prevents heater system pipe leakage, it is ensured that is occurred in feed-water heater
During water level superelevation, after pneumatic means part is connected to liquid countercurrent signal, steam turbine is separated rapidly, to steam turbine or steam bleeding system
With maximum protection.
With the progress of modern thermal power generating technology, generating set continues to develop to ultra supercritical, therewith existing high temperature resistant
The use of Materials with High Strength is more popularized, such as P91, P92 or even the nickel-base alloy material used in the future, but the casting of these materials
Poor-performing, percent defective is high, defect is more.And cast member needs mold and cast, production cycle length.Casting class is drawn gas non-return
Valve passage is generally necking down, secondly the non-straight streaming of valve channel, and medium flow resistance is big, reduces running efficiency of system.Such product its
The dimensional accuracy and Geometrical Tolerance Principle of the parts such as valve body, rocking bar are higher, and cast member is because profile is irregular, the processing of selection
Benchmark is difficult to ensure that the required precision of parts, and assembly qualified rate of product is low.
In consideration of it, it is necessary a kind of full forging extraction check valve of design to solve the above problems.
Utility model content
The technical problems to be solved in the utility model is：There is provided a kind of can prevent casting flaw and reduce the complete of flow resistance
Forge extraction check valve.
To reach above-mentioned purpose, the utility model provides following technical scheme：A kind of full forging extraction check valve, including
Valve body, the pneumatic means outside valve body, the axostylus axostyle being connected installed in valve inner and with pneumatic means, installed in axostylus axostyle
On rocking bar and the flap on rocking bar, the valve body include main part, its main part is cube；In the valve body
Portion is all-pass gauge structure；The valve inner is provided with the valve seat coordinated with flap sealing.
Further, the valve seat is provided with the sealing surface of flap sealing and installed in the installation bottom surface of valve inner,
The sealing surface and installation bottom surface structure at an acute angle.
Further, the main part of the valve body is provided with the boss of installation pneumatic means, and the boss is provided with some
Radiating groove.
Further, the valve body protrudes out the cylindrical inlet channel to be formed and water outlet including main body opposite end
Pipeline.
Further, the full forging extraction check valve also includes the drive link of connection pneumatic means and axostylus axostyle, by axostylus axostyle
The filler support and side cover that are fixed on valve body and the rotary axle box for being fixed on axostylus axostyle and coordinating with rocking bar, the axostylus axostyle with
It is directly to contact between filler support, side cover, rotary axle box, rocking bar.
Further, the valve inner is convexly equipped with the positive stop lug boss close to axostylus axostyle；The rocking bar includes being arranged on axostylus axostyle
On rotation section and the bar portion of connection rotation section and flap, the bar portion can be resisted against positive stop lug boss close to rotation section one end
On.
Prior art is compared, and the utility model at least has advantages below：
1st, the utility model thoroughly solves the problems such as high strength at high temperature cast poor performance, percent defective are high, defect is more；
2nd, the utility model need not develop casting mould, shorten the production cycle, improve production efficiency；
3rd, valve inner of the present utility model is full-bore, is minimized medium flow resistance, improves running efficiency of system；
4th, the utility model can greatly improve the high-precision part passing rate of processing such as valve body, rocking bar, so as to poppet one
The qualification rate of secondary property assembling.
Brief description of the drawings
Fig. 1 is the cross-sectional view of full forging extraction check valve of the present utility model.
Fig. 2 is another angular profile structural representation of full forging extraction check valve of the present utility model.
Fig. 3 is the structural representation of valve body in full forging extraction check valve of the present utility model.
Fig. 4 is another angled arrangement schematic diagram of valve body in full forging extraction check valve of the present utility model.
Fig. 5 is the structural representation of valve seat in full forging extraction check valve of the present utility model.
Embodiment
The structure and utility model content of full forging extraction check valve of the present utility model are described with reference to Fig. 1 to 5.
A kind of full forging extraction check valve, including valve body 1, the pneumatic means 2 installed in the outside of valve body 1, installed in valve body 1
Inside and drive link 4, the shaking on axostylus axostyle 3 of the axostylus axostyle 3, connection pneumatic means 2 and the axostylus axostyle 3 that are connected with pneumatic means 2
Bar 5, be fixed on axostylus axostyle 3 and with rocking bar 5 coordinate rotary axle box 6, the flap 7 on rocking bar 5, in valve body 1
Portion and the valve seat 8 coordinated with the sealing of flap 7 and the bonnet 9 above valve body 1.
Valve body 1, flap 7, valve seat 8 and bonnet 9 of the present utility model etc. are formed using forging, have been prevented in the prior art
The defects of casting.
The valve body 1 includes main part 10, the opposite end of main body 10 protrudes out the cylindrical inlet channel 11 to be formed
The installation portion 13 coordinated with bonnet 9 and insertion main part 10 that are convexed into outlet conduit 12, the top of main body 10 and hang down
Directly in inlet channel 11 and the through hole 14 of outlet conduit 12.The main part 10 is forged to cube.The inside of valve body 1 is
All-pass gauge structure.The profile of valve body 1 rule, can improve the passing rate of processing of valve body, can also poppet body once assemble it is qualified
Rate.Valve body 1 so can be minimized medium flow field resistance, and improve running efficiency of system using the full-bore passage of single flow.
The main part 10 is provided with the boss 15 of installation pneumatic means 2.The boss 15 is provided with some radiating grooves 16.The radiating
Groove 16 is for the high-temperature medium radiating inside auxiliary valve body 1.The through hole 14 is for installing axostylus axostyle 3.In the valve body 1
Portion is convexly equipped with the positive stop lug boss 17 close to axostylus axostyle 3.
The pneumatic means 2 is spring return type cylinder, and relatively independent with the action of flap 7, and pneumatic means failure is not
Influence the action of flap 7.
The axostylus axostyle 3 is fixed in the through hole 14 of valve body 1 by filler support 18 and side cover 19.The axostylus axostyle 3 is also arranged
There are some locating rings 20.High-abrasive material is used at the relative motion of part such as the axostylus axostyle 3 and rocking bar 5, rotary axle box 6, is protected
The life-span of valve is demonstrate,proved.Therefore between the axostylus axostyle 3 and filler support 18, side cover 19, rotary axle box 6, rocking bar 5, locating ring 20
It is directly to contact, without extra installation bushing.
The rocking bar 5 includes the rotation section 21 being arranged on axostylus axostyle 3 and the bar portion 22 of connection rotation section 21 and flap 7.
The bar portion 22 can be resisted against on positive stop lug boss 17 close to one end of rotation section 21, can so be avoided flap 7 from opening position and be made
Into damage.
The valve seat 8 is provided with the sealing surface 23 sealed with flap 7 and the installation bottom surface 24 inside valve body 1.Institute
State sealing surface 23 and installation 24 structure at an acute angle of bottom surface.Valve seat is designed using low-angle, reduces the shut-in time, mitigates impact, is protected
Protect valve and pipe safety.
Adjust pad is provided between the rocking bar 5 and the flap 7, adjust pad can ensure that flap 7 seals with valve seat 8
Face gluing, sealing.
The rotary axle box 6 is fixedly connected on axostylus axostyle 3 by key.The rotary axle box 6 is matched somebody with somebody with the rocking bar 5 interference
Close.
Spirotallic gasket is pressed in be formed between valve body 1 and bonnet 9 by the top of valve body 1 by fastener to be sealed.
The operation principle of full forging extraction check valve of the present utility model is as follows：Medium is by drawing gas during system normal operation
Check-valves, pneumatic means 2 connect source of the gas（0.4 ~ 0.6Mpa compressed airs）Enter two-position three way magnetic valve by ball valve, most pass through afterwards
Cross fast-discharge valve and enter cylinder air inlet, cylinder piston rod rise drive drive link 4, axostylus axostyle 3, rotary axle box 6 along axostylus axostyle 3 circle
The heart is rotated in an anti-clockwise direction, and now extraction check valve flap 7 is opened by medium power；When medium flows backwards, magnetic valve is powered off and closed
Close, cut off source of the gas, fast-discharge valve starts, and discharges lower chamber of air cylinder air, and the compression spring of upper chamber of air cylinder promotes piston rod to decline rapidly
Transmission rod 4, axostylus axostyle 3, rotary axle box 6, rocking bar 5, flap 7 is driven rotationally clockwise, to make to draw gas only along the center of circle of axostylus axostyle 3
The quick closedown of valve flap 7 is returned, while hand-operated direction valve is additionally provided with pneumatic means 2, it is flexible to test extraction check valve in operation
Property use.
In summary, preferred embodiment of the present utility model is these are only, should not be limited with this of the present utility model
Scope.I.e. every simple equivalent changes and modifications made according to the utility model claims book and description, all should
Still belong in the range of the utility model patent covers.
Claims (6)
1. a kind of full forging extraction check valve, including valve body, the pneumatic means outside valve body, installed in valve inner and
Axostylus axostyle, the rocking bar on axostylus axostyle and the flap on rocking bar being connected with pneumatic means, it is characterised in that：It is described
Valve body includes main part, and its main part is cube；The valve inner is all-pass gauge structure；The valve inner be provided with
The valve seat that flap sealing coordinates.
2. full forging extraction check valve as claimed in claim 1, it is characterised in that：The valve seat is provided with close with flap sealing
Front cover and installed in the installation bottom surface of valve inner, the sealing surface and installation bottom surface structure at an acute angle.
3. full forging extraction check valve as claimed in claim 1, it is characterised in that：The main part of the valve body is provided with installation
The boss of pneumatic means, the boss are provided with some radiating grooves.
4. full forging extraction check valve as claimed in claim 1, it is characterised in that：The valve body includes main body with respect to two
End protrudes out the cylindrical inlet channel and outlet conduit to be formed.
5. full forging extraction check valve as claimed in claim 1, it is characterised in that：The full forging extraction check valve also includes
Connect drive link, the filler support that axostylus axostyle is fixed on valve body and the side cover of pneumatic means and axostylus axostyle and be fixed on axostylus axostyle
And the rotary axle box coordinated with rocking bar, it is directly to contact between the axostylus axostyle and filler support, side cover, rotary axle box, rocking bar.
6. full forging extraction check valve as claimed in claim 1, it is characterised in that：The valve inner is convexly equipped with close to axostylus axostyle
Positive stop lug boss；The rocking bar includes the rotation section being arranged on axostylus axostyle and the bar portion of connection rotation section and flap, the bar
Portion can be resisted against on positive stop lug boss close to rotation section one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639490.9U CN206802394U (en) | 2017-06-05 | 2017-06-05 | A kind of full forging extraction check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720639490.9U CN206802394U (en) | 2017-06-05 | 2017-06-05 | A kind of full forging extraction check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206802394U true CN206802394U (en) | 2017-12-26 |
Family
ID=60744706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720639490.9U Active CN206802394U (en) | 2017-06-05 | 2017-06-05 | A kind of full forging extraction check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206802394U (en) |
-
2017
- 2017-06-05 CN CN201720639490.9U patent/CN206802394U/en active Active
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| GR01 | Patent grant |