CN104121240A - Resistance and vibration reduction hydraulic ram pump - Google Patents
Resistance and vibration reduction hydraulic ram pump Download PDFInfo
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- CN104121240A CN104121240A CN201410385299.7A CN201410385299A CN104121240A CN 104121240 A CN104121240 A CN 104121240A CN 201410385299 A CN201410385299 A CN 201410385299A CN 104121240 A CN104121240 A CN 104121240A
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Abstract
The invention relates to a resistance and vibration reduction hydraulic ram pump. The resistance and vibration reduction hydraulic ram pump comprises a power pipe, the power pipe is connected with a pump body, the pump body is connected with the bottom of a bend and the bottom of a vertical water inlet pipe, the water inlet pipe is connected with a water conveying valve, the water conveying valve is connected with an air tank, the air tank is connected with a water outlet pipe, the bend is connected with the small end of a reducing pipe, the large end of the reducing pipe is connected with a drain valve, the back side of a water outlet valve clack of the water conveying valve is provided with a water outlet deflector, the upstream face of a drain valve clack of the drain valve is provided with a drain deflector, the back side of the drain valve clack is provided with a runner cone, the drain deflector is fixedly connected with the reducing pipe, and the runner cone is fixedly connected with the drain valve clack. The deflectors are arranged on two check valves of the hydraulic ram pump, so that the purposes of decreasing the resistance coefficient of the check valves, reducing the weight of the valve clacks and preventing the hydraulic ram pump from violent vibration and cavitation erosion are achieved, the service life of the hydraulic ram pump can be prolonged, the noise and vibration of the hydraulic ram pump are reduced remarkably, and efficiency of the hydraulic ram pump can be improved remarkably.
Description
Technical field
The present invention relates to a kind of drag reduction vibration damping hydraulic ram, is a kind of hydraulic mechanical equipment, is a kind of equipment of natural force automatic pump water without other energy in the situation that of utilized head.
Background technique
In hydraulic ram design and running, must consider efficiency, vibration, cavitation and cavitation corrosion and the noise problem of hydraulic ram.
The efficiency of hydraulic ram is main relevant with the coefficient of partial resistance size of safety check.At present, the simple disk pattern of the general employing of the flap of hydraulic ram drain valve, it is simple in structure, but hydraulic performance is poor, its reason is flap plane and come flow path direction vertical, and current are walked around flap outer rim and formed whirlpool district at reverse side, produce very large coefficient of partial resistance and energy loss.According to hydraulic principle, if suitable flow guide device is set in the pump housing, improve the fluidised form in the pump housing, reduce the resistance coefficient of safety check, can significantly improve the efficiency of hydraulic ram.
The vibration of hydraulic ram and noise are mainly caused by closing of drain valve.In hydraulic ram working procedure, safety check generally opens and closes with the frequency of 30-60 time per minute, and the time from standard-sized sheet to full cut-off of completing is in a few percent in second at every turn, close moment flap and valve bonnet seal shock can produce huge impulse force, violent shock not only can shorten the working life of sealing frequently, and makes hydraulic ram high vibration and produce very large noise.
Drain valve flap is closed the active force of generation
f=
ma, wherein
mfor the quality of flap,
afor the acceleration of flap, so close under the certain condition of acceleration at flap, at the moment flap of closing, be directly proportional to the active force of valve bonnet seal and the quality of flap.In hydraulic ram design process, along with acting head
hincrease, the increase that is also directly proportional of the suffered hydraulic thrust of drain valve flap, so, in order to guarantee the normal work of hydraulic ram, the quality of drain valve flap
mincrease must be directly proportional.This means, along with acting head
hincrease, the active force the producing increase that is also directly proportional is clashed in drain valve flap and valve bonnet seal, this will make the vibration of hydraulic ram also more violent.
This just produces conflict.On the one hand, the quality that reduces drain valve flap can reduce ocsillator strenght and the noise of hydraulic ram.On the other hand, the quality of drain valve flap should be along with acting head
hincrease and increase, if do not taken reasonable measure, merely reduce drain valve flap quality and will greatly reduce the efficiency of hydraulic ram, even can not normally move.
The cavitation phenomenon of hydraulic ram refers to that current flow through contracted flow aperture when place of safety check, and flow velocity is maximum, and pressure is minimum, if pressure at this moment lower than water saturation vapor tension, liquid gasification, produces steam bubble; When water flows through behind place, contracted flow aperture, pressure raises, if surpass saturation vapour pressure value, steam bubble is instantaneous crumbles and fall, and again from vapour phase, becomes liquid phase, and this process is called cavitation.When steam bubble is crumbled and fall, spray and discharge huge energy, and produce vibration wave, serious impact and erosion wear are caused in trim surface, also can cause the generation of high vibration and high noisy simultaneously, be called cavitation corrosion.According to operation practice, the broken ring of the cavitation corrosion of hydraulic ram mainly occurs in reverse side (back side) and seal ring and the flap outer rim of flap, when there is serious cavitation corrosion, in a short period of time, valve rod and flap fracture accident will occur.
In sum, if can find a kind of method that reduces hydraulic ram resistance coefficient, flap quality and prevent cavitation erosion, for the vibration and the noise that improve hydraulic ram efficiency, reduction hydraulic ram, have great importance.
Summary of the invention
In order to overcome the problem of prior art, the present invention proposes a kind of drag reduction vibration damping hydraulic ram.Described hydraulic ram is according to hydraulic principle, suitable flow guide device is set in the pump housing, improve the fluidised form in the pump housing, to reach, reduce the resistance coefficient of safety check, reduce the weight of flap and prevent the object of hydraulic ram high vibration and cavitation erosion, not only the life-span of hydraulic ram can be improved, and the efficiency of hydraulic ram can be significantly improved.
The object of the present invention is achieved like this: a kind of drag reduction vibration damping hydraulic ram, comprise: power pipe, described power pipe is connected with the pump housing, the pump housing and bend pipe, vertical intake pipe bottom are connected, described intake pipe is connected with delivery valve, and described delivery valve is connected with air tank, and described air tank is connected with outlet pipe, the small end of the reducer that described bend pipe is little with large one end, one end is connected, and the large end of described reducer is connected with drain valve; The water outlet flap back side of described delivery valve is provided with water outlet deflector, and described water outlet deflector is fixedly connected with water delivery flap; The sluicing flap upstream face of described drain valve is provided with sluicing deflector, and the back side of described sluicing flap is provided with draft cone, and described sluicing deflector is fixedly connected with reducer, and described draft cone is fixedly connected with described sluicing flap.
Further, described sluicing deflector is: the head of upstream face is a kind of in hemisphere type, cydariform circular cone, cydariform round platform, and rear portion is the little frustoconic shape in the large rear end of front end.
Further, described sluicing deflector is hollow, and the head of sluicing deflector and afterbody are provided with the through hole of UNICOM, and the rear portion end face diameter of a circle of described sluicing deflector is less than or equal to the diameter of sluicing flap upstream face.
Further, described sluicing deflector is entity, and the rear portion end face diameter of a circle of described sluicing deflector is less than the diameter of sluicing flap upstream face.
Further, described sluicing deflector is connected with the large end of described reducer by fixed guide vane.
Further, described fixed guide vane is the streamlined or round end fine stern symmetrical airfoil stator that 2-6 sheet is installed along water (flow) direction.
Further, described draft cone is cone, and the drift angle of described cone is 90-140 degree.
Further, described drain valve is connected with energy recycle device.
Further, described energy recycle device comprises: the tubaeform tail water diffusing opening being straight up connected with drain valve water outlet, arranges the water outlet baffle plate of horizontal positioned in the enlarging of described tubaeform tail water diffusing opening.
Further, described water outlet deflector is entity, and described water outlet deflector front half part is frustoconic shape, and the small end of described frustoconic shape is connected with the back side of water outlet flap, and water outlet deflector latter half part is a kind of in hemisphere, cydariform circular cone, cydariform round platform.
The beneficial effect that the present invention produces is: the present invention is provided with flow guide device on two safety check of hydraulic ram, to reach, reduce the resistance coefficient of safety check, reduce the weight of flap and prevent the object of hydraulic ram high vibration and cavitation erosion, not only can improve the life-span of hydraulic ram, significantly reduce the noise and vibration of hydraulic ram, and can significantly improve the efficiency of hydraulic ram.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of hydraulic ram described in embodiments of the invention one;
Fig. 2 is the stressed schematic diagram of the sluicing flap of traditional hydraulic ram;
Fig. 3 is the stressed schematic diagram of the sluicing flap of hydraulic ram described in embodiments of the invention one, is the A point enlarged view in Fig. 1;
Fig. 4 is the current schematic diagram of traditional water hammer pump check valve;
Fig. 5 is the sluicing deflector schematic diagram of the cydariform circular cone described in embodiments of the invention two, seven;
Fig. 6 is the sectional view of the stator described in the embodiment of the present invention six, is the B-B sectional drawing in Fig. 5;
Fig. 7 is the structural representation of the energy recycle device described in the embodiment of the present invention nine.
Embodiment
Embodiment one:
The present embodiment is a kind of drag reduction vibration damping hydraulic ram, as shown in Figure 1.The present embodiment comprises: power pipe 1, described power pipe is connected with the pump housing 2, the pump housing and bend pipe 3, vertical intake pipe 10 bottoms connect, described intake pipe is connected with delivery valve 9, described delivery valve is connected with air tank 7, described air tank is connected with outlet pipe 8, the small end of the reducer 4 that described bend pipe is little with large one end, one end is connected, the large end of described reducer is connected with drain valve 6, water outlet flap 902 back sides of described delivery valve are provided with water outlet deflector 902, described water outlet deflector is fixedly connected with water outlet flap, sluicing flap 601 upstream faces of described drain valve are provided with sluicing deflector 5, the back side of described sluicing flap is provided with draft cone 602, described sluicing deflector is fixedly connected with reducer, described draft cone is fixedly connected with described sluicing flap.
The vibration of hydraulic ram and noise are mainly caused by closing of drain valve.In hydraulic ram working procedure, the general frequency with 30-60 time per minute of drain valve (safety check) opens and closes, and the time from standard-sized sheet to full cut-off of completing is in a few percent in second at every turn, close moment flap and the shock of valve body can produce huge impulse force, violent shock not only can shorten the working life of sealing frequently, and makes hydraulic ram high vibration and produce very large noise.
The active force that hydraulic ram cuts out sluicing flap comes from the head in power pipe.According to Newtonian mechanics formula, promotion sluicing flap is F=ma by the active force (hydraulic thrust) of full open position setting in motion, and in formula, m is the quality of sluicing flap, and a is the acceleration of sluicing flap.Due to flap, close and move upward, therefore, at least will overcome gravity accleration, overcome in addition the friction of valve rod simultaneously, and the resistances such as effect of current, thus flap close acceleration can be substantially definite, be a relatively definite value.According to the working principle of hydraulic ram: the directed force F that promotes the motion of sluicing flap is the function of head, be that the external environment condition by hydraulic ram work determines, be also a definite numerical value.Along with the increase of acting head H, the thrust F that promotes the motion of the sluicing flap increase that is also directly proportional, so in traditional hydraulic ram design process, in order to guarantee the high efficiency normal work of hydraulic ram, the quality m of sluicing flap must be along with the head H increase that is directly proportional.This means, along with the increase of acting head H, the quality of sluicing flap also increases.But, the increase of sluicing flap quality, post exercise inertia also increases, and sluicing flap and valve body clash into the active force the producing increase that is also directly proportional, and this will make the vibration of hydraulic ram also more violent.
This just produces conflict.On the one hand, the quality of the flap that reduces to sluice can reduce ocsillator strenght and the noise of hydraulic ram, and on the other hand, the quality of sluicing flap should increase along with the increase of acting head H.In traditional hydraulic ram design, in order to reduce the vibration of hydraulic ram, can only establish damping spring vibration damping, take and sacrifice efficiency as cost, consequently greatly reduce the efficiency of hydraulic ram.
For addressing this problem, the present embodiment taked to reduce to sluice mode of lifting surface area of flap.Common sluicing flap upstream face is a plane, and this plane is vertical with water (flow) direction, and the size of hydraulic thrust is relevant with the area of upstream face, and area is larger, and hydraulic thrust is larger, and as shown in Figure 2, in figure, a plurality of arrows represent the pressure of current to sluicing flap.Around this principle, the present embodiment is provided with sluicing deflector at the upstream face of drain valve.Sluicing deflector is fixedly connected with reducer, born the thrust of a part of current, deflector make the to sluice water side of flap reduces, namely make the thrust sluicing on flap reduce, under the prerequisite of guaranteed efficiency, can reduce the quality of flap that sluices like this, thereby reduce flap momentum at the volley, and then reduce vibration and noise, raise the efficiency.
Sluicing deflector can have various forms, and the head of upstream face is a kind of in hemisphere type, cydariform circular cone, cydariform round platform, and rear portion is the little frustoconic shape in the large rear end of front end.
Deflector can also be made to hollow, current can be from the intermediate flow mistake of deflector, and like this, the diameter of deflector can be identical with the diameter of sluicing flap.When sluicing flap and deflector top disengage, the current that promote the motion of sluicing flap will pass through from the centre of sluicing deflector.By controlling the flowing hole in the middle of sluicing deflector, can control more accurately stressed on sluicing flap.Shown in Fig. 1 is the hollow situation of a kind of deflector that sluices, and shown in Fig. 3 is that deflector is entity, but not hollow situation.
Fixedly the link of sluicing deflector can be several thin bars, can be also several stators consistent with water (flow) direction.The sectional shape of stator can be rectangle, can be also streamlined or symmetrical aerofoil profile.
The efficiency of hydraulic ram is main relevant with the coefficient of partial resistance size of safety check (delivery valve and drain valve).At present, the sluicing flap of existing hydraulic ram generally adopts disk pattern, and hydraulic performance is poor.Its reason is flap plane and come flow path direction vertical, and current are walked around flap outer rim and formed whirlpool district at reverse side, produce very large coefficient of partial resistance and energy loss, as shown in Figure 4.
Also there is the problem of a cavitation in existing hydraulic ram.The cavitation phenomenon of hydraulic ram refers to that current flow through contracted flow aperture when place of safety check, and flow velocity is maximum, and pressure is minimum, if pressure at this moment lower than water saturation vapor tension, liquid gasification, produces steam bubble; When water flows through behind place, contracted flow aperture, pressure raises, if surpass saturation vapour pressure value, steam bubble is instantaneous crumbles and fall, and again from vapour phase, becomes liquid phase, and this process is called cavitation.When steam bubble is crumbled and fall, spray and discharge huge energy, and produce vibration wave, serious impact and erosion wear are caused in trim surface, also can cause the generation of high vibration and high noisy simultaneously, be called cavitation corrosion.Hydraulic ram operation is put into practice and is shown, the broken ring of cavitation corrosion of hydraulic ram mainly occurs in reverse side (back side) and seal ring and the flap outer rim of flap, while there is serious cavitation corrosion, in a short period of time, valve rod and flap fracture accident will occur.
Turbulent flow and Cavitation Problems in view of safety check back side, the present embodiment is provided with draft cone at the back side of drain valve, back side at outlet valve is provided with water outlet deflector, improved the turbulent fluidised form of safety check (delivery valve, drain valve) back side, improve the working efficiency of whole hydraulic ram, solved the problem of cavitation and cavitation erosion simultaneously.
For further improving the efficiency of hydraulic ram, can energy recycle device be set in the outlet port of drain valve, reduce loss of head, raise the efficiency.
Reducer described in the present embodiment is word conventional in a kind of engineering, and there is the reducer element of standard to sell, the meaning of its representative is the outlet valve of hydraulic ram and the reducer pipe of power pipe joint, normally one end bore is larger for its shape, the other end bore is less, and the present embodiment has also been used the concept of reducer, but intension slightly changes.Its Main change is: large end, to the solid of rotation bus of small end, is not straight line, but a bandy curve, make the profile of whole reducer look like the cydariform of an elongation, in other words, the outlet of the reducer described in the present embodiment also occurs that some shrink, as shown in Figure 1,3.
Embodiment two:
The present embodiment is embodiment one improvement, is that embodiment one is about the refinement of sluicing deflector.Sluicing deflector described in the present embodiment is: the head of upstream face is a kind of in hemisphere type (Fig. 3), cydariform circular cone (Fig. 5), cydariform round platform (Fig. 1), and rear portion is the little frustoconic shape in the large rear end of front end.
The head of sluicing deflector is the streamline of hemisphere type, is often called as nose spherical in 3D solid.Described cydariform circular cone is that bus is the circular cone that the curve revolution of outwardly convex forms, and in like manner, cydariform round platform is that bus is the round platform that the curve of outwardly convex is rotarily formed.
Embodiment three:
The present embodiment is embodiment two improvement, is that embodiment two is about the refinement of sluicing deflector.Sluicing deflector described in the present embodiment is hollow, and the head of sluicing deflector and afterbody are provided with the through hole of UNICOM, and the rear portion end face diameter of a circle of described sluicing deflector is less than or equal to the diameter of sluicing flap upstream face.
Deflector afterbody described in the present embodiment, namely back side can adopt complete open type and partial occlusion formula.So-called open type, is exactly that deflector back side is not added a cover, and deflector is thin-shell construction, as shown in Figure 1.Fig. 1 is a kind of so-called shading type, is exactly that deflector back side has top cover with holes.
Can by adjusting the size in aperture on deflector upstream face perforate size and top cover, change the size of the suffered hydraulic thrust of flap according to the size of acting head H, reach the object that reduces flap quality.
At acting head H hour, deflector back side can be taked to complete open type, and at water conservancy diversion upstream face, take the via hole of larger opening diameter, to increase the suffered hydraulic thrust of flap, guarantee that hydraulic ram normally works.When acting head H is larger, such as H>3m, in order to subdue flap, clash into vibrative intensity, can adopt the flap quality lower than conventional design, at this moment must reduce the suffered hydraulic thrust of flap normally works to guarantee hydraulic ram, should take less opening diameter at deflector upstream face for this reason, meanwhile, at deflector back side, add the top cover of cover strip circular hole.Under the given condition of the quality of sluicing flap, along with the increase of H, the Circularhole diameter on the top cover of deflector back side reduces, to reduce the pressure of water to sluicing flap.
The installation main points of deflector are: flap disk and deflector axle center are at same vertical line.When drain valve is opened completely, flap disk and deflector top cover Surface Contact, block the diversed body top cover of part flap disk area.Like this, a part of hydraulic thrust originally acting on flap disk is shared by deflector, to reduce the suffered hydraulic thrust of flap, thereby has created condition for reducing flap quality.
Working principle is: when drain valve is opened completely, drain valve flap contacts completely with deflector top, and current are smooth-going to be walked around deflector, flap, draft cone and flow, as shown in Figure 4.Once the suffered hydraulic thrust of drain valve flap is greater than its deadweight, flap disk just disengages with deflector, start to move upward and close drain valve, along with flap leaves and the contacting of deflector, the surface of contact of flap disk and hydraulic thrust increases suddenly, meanwhile, and along with the closing movement of flap, power pipe will produce huge water hammer pressure, and the movement velocity that flap is closed is accelerated.
Embodiment four:
The present embodiment is embodiment two improvement, is that embodiment two is about the refinement of sluicing deflector.Sluicing deflector described in the present embodiment is entity, and the rear portion end face diameter of a circle of described sluicing deflector is less than the diameter of sluicing flap upstream face.
Described in the present embodiment, the meaning of entity does not represent that this object is solid, can be hollow yet, just illustrates in the middle of this object and there is no through hole, and current can only, along this object flows outside, can not enter in this object.
Sluicing deflector just blocks the center portion of sluicing flap, and the stress surface of the upstream face of sluicing flap in the form of a ring.
Embodiment five:
The present embodiment is the improvement of above-described embodiment, is that above-described embodiment is about the refinement of sluicing deflector.Sluicing deflector described in the present embodiment is connected with the large end of described reducer by fixed guide vane.
Described fixed guide vane is sluicing deflector to be fixed on to the centre of reducer, and current can flow to from the surrounding of sluicing deflector the outlet of drain valve.
It is uniform that fixed guide vane is arranged on the cylindrical surrounding of sluicing deflector, and two stators can be set, and the stator of the multiple layouts such as three, four, five, six also can be set.The sectional shape of fixed guide vane can have various ways: the rectangle of flat sheet, cylindrical, streamlined etc.
Embodiment six:
The present embodiment is embodiment five improvement, is that embodiment five is about the refinement of fixed guide vane.Fixed guide vane described in the present embodiment is the streamlined or round end fine stern symmetrical airfoil stator that 2-6 sheet is installed along water (flow) direction.
Round end fine stern symmetrical airfoil described in the present embodiment refers to: the aerofoil profile of aircraft wing, i.e. and projection on one side, on one side mild streamlined, centre is cut, and the part of both sides projection is merged and the shape that forms, see Fig. 6, the arrow in figure represents water (flow) direction.
Embodiment seven:
The present embodiment is the improvement of above-described embodiment, is that above-described embodiment is about the refinement of draft cone.Draft cone described in the present embodiment is cone, the drift angle of described cone
αfor 90-140 degree, see Fig. 5.
Draft cone is fixed on sluicing flap, and its shape also can have multiple choices, as: can be streamlined, nose is spherical etc.Taper shape has been taked in this enforcement.The material of draft cone can be chosen the ultra-high molecule material of density of mass less and anti-cavitation erosion and abrasion, as high-strength nylon etc.
Embodiment eight:
The present embodiment is the refinement of above-described embodiment, is that above-described embodiment is about the refinement of drain valve outlet.Drain valve described in the present embodiment and the energy recycle device part of dotted line frame (in the Fig. 1 with) are connected.
The effect of energy recycle device is by changing the streamflow regime of drain valve outlet, reduce loss of head, improving the utilization efficiency of hydraulic ram.Energy recycle device can have various ways, such as: in drain valve outlet, use baffle plate, the outlet of drain valve is designed to flaring enlarging etc., can play the effect that reduces loss of head.
Embodiment nine:
This enforcement is embodiment eight improvement, is that embodiment eight is about the refinement of energy recycle device, as shown in Figure 7.Described energy recycle device comprises: the tubaeform tail water diffusing opening 6032 being straight up connected with drain valve water outlet, arranges the water outlet baffle plate 6031 of horizontal positioned in the enlarging of described tubaeform tail water diffusing opening.
Drain valve aperture leaving energy recovering device is comprised of drain valve tail water diffusing tube and baffle plate.Baffle plate after increaser causes a pressure head, impels fluid to shunt along cross section.This causes dwindling of separation zone, thereby fluid is more effectively spread.Now that loss or the outlet velocity pressure loss in increaser all reduces.Baffle plate just radially turns to (turning 90 degrees) before impelling fluid not go out pipeline simultaneously, as shown by the arrows in Figure 7.
Tail water diffusing tube can be formed by reducer fitting, and inlet diameter equals drain valve orifice diameter D, reducer fitting outlet diameter D
3>D, D is got in suggestion
3/ D>=2.Reducer fitting bus adopts the circular arc that radius is R, and R/D >=0.5 is got in suggestion.Top cover is circular dull and stereotyped, diameter>=D
3, and the distance s value between top cover and reducer fitting is 0.15<s/D<0.25.
When not establishing energy recycle device, it exports local head loss
, wherein
v 0 for drain valve aperture flow velocity,
ξ 0for drain valve aperture outlet coefficient of partial resistance,
gfor gravity accleration.When drain valve aperture is free discharge,
ξ 0> 1; When drain valve aperture is submerge discharging flow,
ξ 0≈ 1.
When energy recycle device is established in drain valve outlet, the loss of head of diffusing tube energy recycle device is
,
ξfor energy recycle device resistance coefficient.When 0.15<s/ D<0.25 and R/D=0.5,0.41<
ξ<0.49.
Obviously, the exit head loss that drain valve energy recycle device can reduce drain valve is greatly set, has been equivalent to reclaim the energy of part drain valve outlet, improved the efficiency of hydraulic ram.
S/D is got in suggestion
1=0.20 and R/D
1=0.5, corresponding=0.41.When lacking the reducer fitting that bus is circular arc, can adopt the commercial reducer fitting of standard.
Embodiment ten:
The present embodiment is the improvement of above-described embodiment, is that above-described embodiment is about the refinement of water outlet deflector.The described water outlet deflector of this enforcement is entity, and described water outlet deflector front half part is frustoconic shape, and the small end of described frustoconic shape is connected with the back side of water outlet flap, and water outlet deflector latter half part is a kind of in hemisphere, cydariform circular cone, cydariform round platform.
Entity described in the present embodiment can be hollow, can be also solid.Can use the macromolecular materials such as nylon to make by water outlet deflector.
Finally it should be noted that, below only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention (such as shape, the mounting type of sluicing deflector, the shape of reducer etc. of sluicing deflector), and not depart from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a drag reduction vibration damping hydraulic ram, comprise: power pipe, described power pipe is connected with the pump housing, the pump housing and bend pipe, vertical intake pipe bottom are connected, described intake pipe is connected with delivery valve, described delivery valve is connected with air tank, described air tank is connected with outlet pipe, the small end of the reducer that described bend pipe is little with large one end, one end is connected, the large end of described reducer is connected with drain valve, it is characterized in that, the water outlet flap back side of described delivery valve is provided with water outlet deflector, and described water outlet deflector is fixedly connected with water delivery flap; The sluicing flap upstream face of described drain valve is provided with sluicing deflector, and the back side of described sluicing flap is provided with draft cone, and described sluicing deflector is fixedly connected with reducer, and described draft cone is fixedly connected with described sluicing flap.
2. hydraulic ram according to claim 1, is characterized in that, described sluicing deflector is: the head of upstream face is a kind of in hemisphere type, cydariform circular cone, cydariform round platform, and rear portion is the little frustoconic shape in the large rear end of front end.
3. hydraulic ram according to claim 2, it is characterized in that, described sluicing deflector is hollow, and the head of sluicing deflector and afterbody are provided with the through hole of UNICOM, and the rear portion end face diameter of a circle of described sluicing deflector is less than or equal to the diameter of sluicing flap upstream face.
4. hydraulic ram according to claim 2, is characterized in that, described sluicing deflector is entity, and the rear portion end face diameter of a circle of described sluicing deflector is less than the diameter of sluicing flap upstream face.
5. hydraulic ram according to claim 1, is characterized in that, described sluicing deflector is connected with the large end of described reducer by fixed guide vane.
6. hydraulic ram according to claim 5, is characterized in that, described fixed guide vane is the streamlined or round end fine stern symmetrical airfoil stator that 2-6 sheet is installed along water (flow) direction.
7. hydraulic ram according to claim 1, is characterized in that, described draft cone is cone, and the drift angle of described cone is 90-140 degree.
8. hydraulic ram according to claim 1, is characterized in that, described drain valve is connected with energy recycle device.
9. hydraulic ram according to claim 8, it is characterized in that, described energy recycle device comprises: the tubaeform tail water diffusing opening being straight up connected with drain valve water outlet, arranges the water outlet baffle plate of horizontal positioned in the enlarging of described tubaeform tail water diffusing opening.
10. according to the hydraulic ram described in claim 1-9, it is characterized in that, described water outlet deflector is entity, described water outlet deflector front half part is frustoconic shape, the small end of described frustoconic shape is connected with the back side of water outlet flap, and water outlet deflector latter half part is a kind of in hemisphere, cydariform circular cone, cydariform round platform.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825563A (en) * | 2018-07-10 | 2018-11-16 | 郑州合撷亨商贸有限公司 | A kind of shock-dampening method of shock-absorbing type hydraulic ram |
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| CN102269185A (en) * | 2011-07-20 | 2011-12-07 | 浙江大学 | Ram pump with energy-saving noise-reduction improvement structure |
| CN203477483U (en) * | 2013-09-02 | 2014-03-12 | 上海开维喜阀门集团有限公司 | High-pressure axial flow check valve |
| CN203743092U (en) * | 2014-04-04 | 2014-07-30 | 北京宇豪胜水利科技咨询有限公司 | Water hammer pump |
| CN204200715U (en) * | 2014-08-07 | 2015-03-11 | 北京宇豪胜水利科技咨询有限公司 | A kind of drag reduction vibration damping hydraulic ram |
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| EP0655557A1 (en) * | 1993-11-29 | 1995-05-31 | Schlumpf, Florian, Masch.Ing.HTL | Device for the delivery of fluids |
| CN201096111Y (en) * | 2007-02-18 | 2008-08-06 | 邹镇 | National standard component welded or screw-threaded hydraulic ram |
| CN102269185A (en) * | 2011-07-20 | 2011-12-07 | 浙江大学 | Ram pump with energy-saving noise-reduction improvement structure |
| CN203477483U (en) * | 2013-09-02 | 2014-03-12 | 上海开维喜阀门集团有限公司 | High-pressure axial flow check valve |
| CN203743092U (en) * | 2014-04-04 | 2014-07-30 | 北京宇豪胜水利科技咨询有限公司 | Water hammer pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825563A (en) * | 2018-07-10 | 2018-11-16 | 郑州合撷亨商贸有限公司 | A kind of shock-dampening method of shock-absorbing type hydraulic ram |
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| Publication number | Publication date |
|---|---|
| CN104121240B (en) | 2016-08-24 |
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