CN101776165B - Waterproof hammer muting check valve with impeller type case - Google Patents
Waterproof hammer muting check valve with impeller type case Download PDFInfo
- Publication number
- CN101776165B CN101776165B CN2009102145432A CN200910214543A CN101776165B CN 101776165 B CN101776165 B CN 101776165B CN 2009102145432 A CN2009102145432 A CN 2009102145432A CN 200910214543 A CN200910214543 A CN 200910214543A CN 101776165 B CN101776165 B CN 101776165B
- Authority
- CN
- China
- Prior art keywords
- housing
- turbulence blades
- safety check
- blades
- turbulence
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Check Valves (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a waterproof hammer muting check valve with an impeller type case, which comprises the case, a sealing ring, a cowling, a flow guide body and a spring, wherein turbulence blades are arranged on the inner surface of the case. Through two groups of axial flow type blades which are arranged in a flow passage, used as turbulence blades and fixed on the inner surface of the case, the back flowing liquid continuously converts most pressure energy and kinetic energy into the torque on the check valve around the axial direction in the process of flowing through the turbulence blades. Because the two groups of blades have opposite turbulence directions, a pair of mutually balanced moments is formed. Because the pressure energy and the kinetic energy of the liquid are continuous and are gradually converted into the moments on the check valve, the sudden impact on the valve by a water hammer is eliminated.
Description
Technical field
The invention belongs to safety check and make the field, particularly relate to a kind of impeller type water hammer-resistant mute check valve.
Background technique
Safety check is the primary element of fluid Control Engineering, uses very extensively.It plays the effect of other fluid machineries of protection and pipeline safety through preventing fluid countercurrent current.The valve plate closing velocity is very fast in the conventional check valves, and generally speaking, safety check is installed on the pipeline of pump outlet end connection, and the pump discharge end of disembarking is nearer, in order to stop the tube fluid adverse current to the destruction that pump possibly cause, pump is shielded.What pipe-line system use at present was maximum is rotary-open type and Lift check valve.When the downstream valve was closed at short notice, water hammer will take place in pipe-line system, and safety check cuts out because of cutout in the pipeline automatically, and surge wave acts directly on the safety check, can cause the damage of valve when serious.Water hammer accident and safety check lost efficacy and were coupled usually.The too fast keying of safety check can cause water hammer, and water hammer destroys safety check, thereby in the loop, causes chain reaction, and more fluid parts (comprising other safety check) are impaired, makes the accident upgrading; No matter this vicious circle begins on which link, and its result is serious.
Existing safety check; No matter be rotary-open type, rise-fall type, or oblique dish formula safety check, they have a common feature when opening and closing; Promptly open or close in the closed procedure; Valve plate is in accelerating process all the time, makes the valve motion parts stop preceding excessive velocities, the immediate cause that Here it is causes safety check water hammer and flap to clash into.In order to solve safety check water attack and flap bump problem, the safety check that three kinds of valve plates have damper has appearred: mechanical damping formula safety check, waterpower damped type safety check and mix the damped type safety check.The advantage of mechanical damping formula safety check is that the damping characteristic of damper is easy to set through mechanical structure; Shortcoming is along with rate of flow of fluid in the pipeline and flow increase; It is huge and complicated that corresponding damping mechanism will become; And when widening along with pipeline flow change in flow territory, the low discharge flow velocity open and shut characteristic of safety check can severe exacerbation (being the normally opening and closing of low discharge flow velocity operating mode).Waterpower damped type safety check adopts specified structure, makes its moving element when accomplishing switching motion, must reduce moving element kinetic energy to certain segment fluid flow acting, reaches to prolong dam time and the purpose of alleviating the flap bump.The advantage of this scheme is that check valve structure is simple, operational reliability is high; Shortcoming is the complicated movement of fluid in valve body, is difficult to make the waterpower damping characteristic reach the requirement of regulation through the parametrization design, and design cost is higher; And along with pipeline flow velocity and flow increase; The required damping of waterpower damper also increases thereupon, for big flow, big flow velocity and to the pipeline physical dimension pipeline of lower limit requirement is arranged, and waterpower damped type safety check has certain defective.Mixing the damped type safety check is the design that mechanical damper is combined with the waterpower damper.The mutual supplement with each other's advantages through two kinds of dampers is attempted in this design, optimizes the open and shut characteristic of safety check.According to domestic and international patent, this scheme does not obtain significant breakthrough.A drawback of damped type safety check is that valve plate is slowly closed and caused part backflow to blow back into water pump easily, makes the water pump reversing.
Remove above-mentioned described safety check, also have DRV, the safety check that liquidates, waterproof plumb bob shape safety check etc.DRV is closed the move distance weak point that the little reason of sound is a valve plate, but can not eliminate water hammer; In fact the formula safety check of liquidating belongs to waterpower damped type safety check; The anti-water hammer effect of ball check valve is better, but structure is too complicated, and sealing surface is too much, and manufacturing expense is high.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing technology, provide a kind of simple in structure and effectively alleviate the water attack energy the impeller type water hammer-resistant mute check valve of valve along axial concentrated impact.
In order to realize the foregoing invention purpose, the technological scheme of employing is following:
A kind of waterproof hammer muting check valve of impeller type case comprises housing, seal ring, cowling, deflector, spring, and the internal surface of said housing is provided with turbulence blades.
The present invention is provided with turbulence blades through the internal surface at housing, and the current that buffering refluxes are to the impact of safety check, and then weakening even counteracting impact force of water flow.
Further, the present invention is provided with a plurality of turbulence blades, and turbulence blades is evenly distributed on the internal surface of housing.Through a plurality of turbulence blades evenly being set in shell inner surface, make that anti-water attack is more even, effect is better.
In the technique scheme, it is the laminar body of curve that said turbulence blades adopts the cross section.
Further, said turbulence blades is serpentine.
The two ends of said turbulence blades are towards parallel with the central axis of safety check.
Further, said turbulence blades comprises two groups of front and back, and preceding group of turbulence blades is arranged on the front end of housing, and back group turbulence blades is arranged on the rear end of housing.
The rotation direction of the two groups of turbulence blades in said front and back is opposite; And preceding group of turbulence blades is near fluid inlet; The central axis of the tangent line safety check of its leading edge is parallel, and the tangent line of the trailing edge of preceding group of turbulence blades and the central axis of safety check are first angle, and the tangent line of the leading edge of back group turbulence blades is parallel with the central axis of safety check; The tangent line of the trailing edge of back group turbulence blades and the central axis of safety check are second angle, and said first angle equates with second angle.
The runner of the serpentine shape that group turbulence blades and back group turbulence blades constitute before said.
Housing according to the invention comprises seal ring mounting groove, cylindrical section and deflector mounting groove; Seal ring mounting groove and deflector mounting groove lay respectively at the two ends of housing; Said cylindrical section is positioned at the intermediate section of housing, and its inwall is the cylndrical surface, and the inwall of cylindrical section is provided with turbulence blades.
Said cowling comprises rectification cover body, the sealing surface that cooperates with seal ring, the end face that cooperates with deflector and axle sleeve; Said rectification cover body is a solid of rotation; Its bus is the curve of a fairing; The outer diameter of said end face is identical with the front end outer diameter of deflector, and the internal face of said axle sleeve is the cylndrical surface.
The present invention has designed the inner passage formula waterproof hammer muting check valve of continuous elimination water hammer.This valve through in runner, arrange as turbulence blades two groups of axial--flow bladings---vanes fixed is on the internal surface of housing; Make withdrawing fluid in the turbulence blades process of flowing through; With most of pressure can and kinetic energy change into continuously to safety check around axial moment of torsion; Because the flow-disturbing of two groups of blades is in the opposite direction, therefore formed a pair of moment of cancelling each other.Because fluid pressure ability and kinetic energy in turbulence blades are continuously, change the moment to safety check gradually into, therefore eliminated water hammer the emergentness of valve has been impacted.And, to compare with the damped type safety check with the Slow Close formula, one of advantage is that water hammer is cleared up gradually; Two of advantage is that valve plate is closed rapidly, thereby has avoided partial reflux to blow back in the pump; Three of advantage is simple in structure, and manufacturing expense is low.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a deflector structural representation of the present invention;
Fig. 3 is a deflector sectional view of the present invention;
Fig. 4 is a shell construction schematic representation of the present invention;
Fig. 5 is a dome structure schematic representation of the present invention.
Fig. 6 is a support frame structure schematic representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
Structure of the present invention is made up of housing 2, seal ring 3, cowling 4, deflector 5, support ring 6, spring 7 shown in accompanying drawing 1, and its main feature is that the internal surface of housing 2 is provided with turbulence blades 1.
Be depicted as deflector 5 structures of the present invention like accompanying drawing 2, constitute by wheel hub 54, axle sleeve 53.The solid of rotation that wheel hub 54 is that a front end 55 is big, rear end 56 is little, its bus is circular arc line, oval camber line or other forms of curve.
Be depicted as housing 2 structures of the present invention like accompanying drawing 3, mainly constitute by seal ring mounting groove 21, cylindrical section 22 and support ring mounting groove 23.Its general characteristic is for being a cylindrical section 22 at the housing intermediate section, and its inwall also is the cylndrical surface, and the inwall cylndrical surface is provided with two groups of turbulence blades groups, promptly preceding group vane group 51 and back group vane group 52.
The structure of turbulence blades group 51,52 is shown in accompanying drawing 4; The rotation direction of two groups of turbulence blades groups 51,52 is opposite; Wherein, preceding group of vane group 51 be near fluid inlet, the parallel axes of the tangent line of its leading edge 511 and housing 2; Purpose is that vertically incoming flow can be avoided incoming flow that blade inlet edge 511 is produced and impact with group vane group 51 before the axial entering.The tangent line and housing 2 axis of the trailing edge 512 of preceding group vane group 51 have an angle, and the blade bus of preceding group of vane group 51 can be circular arc, elliptic arc or other forms of curve.The tangent line of the leading edge 521 of back group vane group 52 and the parallel axes of housing 2 its objective is that water hammer refluxes can avoid incoming flow to blade inlet edge 521 generation impacts with axial enterings back group vane group 52.The tangent line of the trailing edge 522 of back group vane group 52 and the axis of housing 2 have an angle, and the blade bus of back group vane group 52 can be circular arc, elliptic arc or other forms of curve.Before the angle of cut of trailing edge 512 and axis of group vane group 51 equate with the angle of cut of axis with the trailing edge 522 of back group vane group 52, purpose be liquid from one group of blade entering another to organize blade be smooth-goingly to get into, avoid producing water impact.The runner of a serpentine shape of two groups of blade 51,52 formations makes current when flowing into two groups of runners, produces the moment of torsion to housing 2 in the opposite direction respectively, and purpose is that these two moments of torsion are cancelled out each other.The runner of said structure; Water hammer is refluxed flowing through two groups of blades 51,52 o'clock; The major part of fluid energy all changes into along the power perpendicular to housing 2, and is to increase gradually along the power perpendicular to axis, rather than concentrates in together along housing 2 axial directions and impact flap.
Be depicted as the structure of cowling 4 like accompanying drawing 5, constitute by rectification cover body 41, the sealing surface 43 that cooperates with the sealing surface of seal ring 3, the end face 45 that cooperates with wheel hub front end 55, the axle sleeve 44 that cooperates with wheel hub axle sleeve 53.Said rectification cover body 41 is a solid of rotation, and its bus 42 is the SPL of a fairing, and purpose is to make fluid fairing ground get into valve body.Said sealing surface 43 is the part of rectification cover body 41.The outer diameter of said end face 45 is identical with the outer diameter of wheel hub front end 55, and when end face 45 and wheel hub front end 55 were adjacent to, bus 42 overlapped with the tangent line of bus in the joint place of wheel hub 5.The internal face of said axle sleeve 44 is the cylndrical surface, can slide along the external cylindrical surface of wheel hub axle sleeve 53, between axle sleeve 44 and wheel hub axle sleeve 53, is provided with spring 7.
Be depicted as the structure of supporting frame 6 like accompanying drawing 6, constitute by support ring 64, dunnage 63, wheel hub baffle ring 62, axle 61.Said support ring 64 is installed in the support ring mounting groove 23 of housing 2.Said dunnage 63 is from radial several the flat plates of axis, and said axle 61 cooperates with the internal face of wheel hub axle sleeve 53, and the two does not have relative movement.
Working procedure of the present invention is following:
After pump valve was opened, fluid pressure action was on cowling 4, and pressure spring 7 is pushed cowling 4 open, and the end face 45 of cowling 4 is overlapped with the front end 55 of wheel hub, and fluid in getting into valve, and flows out valve along valve shaft.When downstream valve closing or front end pump are closed suddenly, owing to cut off the water supply, compressed spring 7 resiliences before the passback of water flow pressure ripple, are pressed to seal ring 3 with cowling 4 in the valve.The leading edge 521 of the pressure wave of resilience group vane group 52 along the back gets into valve; Flowing through two groups of blades at 51,52 o'clock; Liquid water attack energy is passed to housing 2 by blade gradually; Make housing 2 produce rightabout torsional deflection, be about to the water attack energy change into gradually whole valve torsional deflection can, thereby greatly alleviate the water attack energy to valve along axial concentrated impact.
Claims (4)
1. the waterproof hammer muting check valve of an impeller type case; Comprise housing (2), seal ring (3), cowling (4), deflector (5), spring (7); The internal surface that it is characterized in that said housing (2) is provided with turbulence blades (1); It is the laminar body of curve that said turbulence blades (1) adopts the cross section, and these laminar body are serpentine, and two ends are towards parallel with the central axis of safety check.
2. safety check according to claim 1 is characterized in that being provided with a plurality of turbulence blades (1), and turbulence blades (1) is evenly distributed on the internal surface of housing (2).
3. safety check according to claim 1 is characterized in that said turbulence blades (1) comprises two groups of front and back, and preceding group of turbulence blades (51) is arranged on the front end of housing (2), and back group turbulence blades (52) is arranged on the rear end of housing (2).
4. safety check according to claim 1; It is characterized in that said housing (2) comprises seal ring mounting groove (21), cylindrical section (22) and deflector mounting groove (23); Seal ring mounting groove (21) and deflector mounting groove (23) lay respectively at the two ends of housing (2); Said cylindrical section (22) is positioned at the intermediate section of housing (2), and its inwall is the cylndrical surface, and the inwall of cylindrical section (22) is provided with turbulence blades (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102145432A CN101776165B (en) | 2009-12-31 | 2009-12-31 | Waterproof hammer muting check valve with impeller type case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102145432A CN101776165B (en) | 2009-12-31 | 2009-12-31 | Waterproof hammer muting check valve with impeller type case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776165A CN101776165A (en) | 2010-07-14 |
| CN101776165B true CN101776165B (en) | 2012-11-14 |
Family
ID=42512706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102145432A Expired - Fee Related CN101776165B (en) | 2009-12-31 | 2009-12-31 | Waterproof hammer muting check valve with impeller type case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101776165B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635698A (en) * | 2012-04-23 | 2012-08-15 | 哈尔滨工程大学 | Kingston valve |
| CN113531177B (en) * | 2021-09-13 | 2021-11-19 | 南通众扬管业科技有限公司 | Valve structure without valve rod and resisting water hammer effect |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474209A (en) * | 1982-11-18 | 1984-10-02 | Farid Akhtarekhavari | Solar heating check valve and flow indicator |
| CN2153686Y (en) * | 1992-04-30 | 1994-01-19 | 永嘉县化工机械阀门厂 | Non-return valve with guided stem |
| CN2247747Y (en) * | 1995-11-09 | 1997-02-19 | 陈永汶 | Check valve |
| CN2416308Y (en) * | 2000-04-12 | 2001-01-24 | 管云初 | Horizontal & vertical two-purpose silient check valve |
| CN2418326Y (en) * | 2000-04-14 | 2001-02-07 | 周宏远 | Spiral-shuttle type non-return valve |
-
2009
- 2009-12-31 CN CN2009102145432A patent/CN101776165B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474209A (en) * | 1982-11-18 | 1984-10-02 | Farid Akhtarekhavari | Solar heating check valve and flow indicator |
| CN2153686Y (en) * | 1992-04-30 | 1994-01-19 | 永嘉县化工机械阀门厂 | Non-return valve with guided stem |
| CN2247747Y (en) * | 1995-11-09 | 1997-02-19 | 陈永汶 | Check valve |
| CN2416308Y (en) * | 2000-04-12 | 2001-01-24 | 管云初 | Horizontal & vertical two-purpose silient check valve |
| CN2418326Y (en) * | 2000-04-14 | 2001-02-07 | 周宏远 | Spiral-shuttle type non-return valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101776165A (en) | 2010-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725740B (en) | Impeller type water hammer-resistant mute check valve | |
| CN101737533B (en) | Water hammer-resistant mute check valve | |
| AU2010252496B2 (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
| CN205260931U (en) | Bionical low pressure drop axial -flow type check valve | |
| US20150041002A1 (en) | Energy recovering flow control valve | |
| CN101776165B (en) | Waterproof hammer muting check valve with impeller type case | |
| CN103244746B (en) | Self-power adjustable valve slow-closing device | |
| CN101737535B (en) | Simple and durable mute check valve | |
| WO2010063180A1 (en) | Shut-off valve for pipe | |
| CN101324281B (en) | Novel reverse flow preventing device | |
| CN101737534A (en) | Mute check valve | |
| JP4751165B2 (en) | Francis pump turbine | |
| CN106678374B (en) | A kind of low water drag hydraulic operated valve | |
| CN115289252A (en) | Steam extraction check valve | |
| US1748892A (en) | Hydraulic process and apparatus | |
| EP3929430A1 (en) | Runner for a hydraulic turbine | |
| CN210600205U (en) | Shock attenuation butterfly valve | |
| CN209164662U (en) | The inclined disc type non-return valve of high temperature and pressure | |
| KR20220139395A (en) | Hydro Turbine and Hydro Generator | |
| CN203146407U (en) | Rear vertical shaft tubular pump device with front guide vane | |
| CN211449711U (en) | Mounting structure based on submerged relief valve rod | |
| CN207796187U (en) | A kind of swing check valve | |
| CN207848492U (en) | A kind of check-valves with the micro- slow keying effect of more flaps | |
| CN219493149U (en) | Protection structure for water pump outlet pipeline check valve | |
| CN101876380A (en) | Low-resistance slow-closure type check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |