CN203743092U - Water hammer pump - Google Patents

Water hammer pump Download PDF

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Publication number
CN203743092U
CN203743092U CN201420161742.8U CN201420161742U CN203743092U CN 203743092 U CN203743092 U CN 203743092U CN 201420161742 U CN201420161742 U CN 201420161742U CN 203743092 U CN203743092 U CN 203743092U
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CN
China
Prior art keywords
pipe
water
reducer
hydraulic ram
pump
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
Application number
CN201420161742.8U
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Chinese (zh)
Inventor
杨开林
高勇
娄德兰
郭新蕾
李甲振
郭永鑫
付辉
王涛
施春蓉
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BEIJING YUHAOSHENG WATER CONSERVANCY TECHNOLOGY CONSULTING Co Ltd
Original Assignee
BEIJING YUHAOSHENG WATER CONSERVANCY TECHNOLOGY CONSULTING Co Ltd
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Priority to CN201420161742.8U priority Critical patent/CN203743092U/en
Application granted granted Critical
Publication of CN203743092U publication Critical patent/CN203743092U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a water hammer pump. The water hammer pump comprises a power tube, the power tube is connected with a pump body, the pump body is connected with the bottoms of a bend pipe and a vertical water inlet pipe, the water inlet pipe is connected with a water delivery valve, the water delivery valve is connected with an air tank, the air tank is connected with a water outlet pipe, the cross-sectional area of the power tube is equal to the cross-sectional areas of the pump body and the bend pipe, the bend pipe is connected with the small end of a reducing pipe, and the large end of the reducing pipe is connected with a water escape valve. According to the water hammer pump, the reducing pipe is arranged on the position of the water escape valve and together with the bend pipe and the water escape valve so as to reduce head loss. Compared with a traditional water hammer pump, the water hammer pump improves the efficiency of the water hammer pump, increases the lift, and reduces the size of the water hammer pump, thereby saving materials for manufacturing the water hammer pump and reducing the work amount for installing the water hammer pump. Therefore, earthworks and installation costs can be greatly reduced for engineering construction of pumped storage or diversion projects and the like of large water hammer pump stations.

Description

A kind of hydraulic ram
Technical field
The utility model relates to a kind of hydraulic ram, is a kind of automatic water pumping equipment, is a kind of equipment of natural force automatic pump water without other energy in the situation that of utilized head.
Background technique
Along with social progress and the understanding to fossil energy application limitation, people more and more pay attention to the various equipment that directly natural force is converted into power.As a kind of pumping equipment that does not need the secondary energy such as electric power just can effectively move, hydraulic ram is a kind of very good natural force conversion equipment.But traditional hydraulic ram is owing to being subject to all restrictions, power can not be too large, can only be applied in the occasion that Agriculture Field draws water.Theoretically, if use powerful hydraulic ram by the current raising lift to tens of extra low head (being less than the head of 5 meters), the height of twenties meters, just can produce industrial generation head, can utilize the extra low head that water resources is very abundant thus, and produce a large amount of non-harmful energy.In addition, can also utilize extra low head to carry out large size irrigation, and without the energy or use less in the large-scale water delivery engineering of the energy.Design and manufacture small volume and the higher high-power hydraulic ram of efficiency is a problem that must solve how.
Summary of the invention
In order to overcome the problem of prior art, the utility model proposes a kind of hydraulic ram.Described hydraulic ram is by changing the position of reducer, and the volume that has reduced hydraulic ram has improved efficiency simultaneously.
The purpose of this utility model is achieved in that a kind of 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 sectional area of described power pipe equates with the sectional area of the pump housing, bend 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.
Further, described reducer is crossed the conical butt that is shaped as on the vertical plane of gyration center axis.
Further, described reducer is crossed the rectangle that is shaped as on the vertical plane of gyration center axis.
Further, the base angle of described reducer and bend pipe connection part is 90 degree.
Further, the base angle of described reducer and bend pipe connection part is arc transition.
The beneficial effect that the utility model produces is: the utility model adopts is reducer setting the position of drain valve, and bend pipe, drain valve concentrate in together, and can reduce loss of head.Comparing with traditional hydraulic ram, is first the efficiency that has improved hydraulic ram, utilizes the low water head of 1 meter just can produce the lift up to 70 meters.Another advantage is the volume that has reduced hydraulic ram, in other words under same power, the volume-diminished of hydraulic ram.Reducing of hydraulic ram volume, has saved the material of manufacturing hydraulic ram on the one hand, has saved on the other hand the engineering work load that hydraulic ram is installed.This point is very important to the engineering construction of large-scale hydraulic ram pumping stations such as pumped storage or water diversion project and so on, minimizing earthwork and mounting cost that can be a large amount of.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is hydraulic ram structural representation described in embodiment one of the present utility model;
Fig. 2 is the structural representation of traditional hydraulic ram;
Fig. 3 is the structural representation of reducer described in embodiment four of the present utility model;
Fig. 4 is the structural representation of reducer described in embodiment five of the present utility model.
Embodiment
Embodiment one:
The present embodiment is a kind of large-scale 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 4, vertical intake pipe 3 bottoms are connected, described intake pipe is connected with delivery valve 7, described delivery valve is connected with air tank 8, and described air tank is connected with outlet pipe 9, and the sectional area of described power pipe equates with the sectional area of the pump housing, bend pipe, the small end of the reducer 5 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 6.
Power pipe described in the present embodiment is that upstream head is introduced in water pump, and the power of water pump is provided, therefore, and the pressure that power pipe provides with head.
The pump housing is the straight tube of one section of horizontal positioned, is a linkage section, and inlet pipe elbow is linked together.
Elbow is to be current straight up by the current guiding of the level that approaches of power pipe outflow, and current straight up make the flap of drain valve can utilize gravity move up and down and open and close.The benefit of utilizing gravity to open and close drain valve is that the switching of flap is stressed more even, can not be subject to the impact of the stressed variation of spring index type.
Delivery valve is vertical lifting formula safety check, utilizes equally gravity to open and close, as shown in Figure 1.In the course of the work, the flap of delivery valve moves up and down.Under the impact of flap water hammer, move up, delivery valve is opened and is allowed that current enter air tank; After impact of water hammer, flap is large to moving down under the effect of gravity, and delivery valve is closed and stoped air tank current to enter the pump housing.
Drain valve can adopt vertical lifting formula safety check or horizontal Swing check valve.If adopt vertical lifting formula drain valve, when flap is when under Action of Gravity Field, drain valve is opened when moving down, under the effect of head, power pipe current will speed up mobile; The current that are subject to once flap pull power and pressure sum surpasses its gravity, and flap closes drain valve by moving on rapid, produces huge water hammer pressure.
Air tank, also referred to as pressurized tank, mainly utilizes the compression and expansion of gas in tank to play retaining energy storage and absorb impact of water hammer ripple.Because relying on the cycle of drain valve and delivery valve to replace automatic on-off completely, hydraulic ram utilize water hammer effect to carry out water delivery, if there is no air tank, the water delivery process of conduit pipe is periodically discontinuous, after air tank is set, it is continuous not only can making the water delivery of conduit pipe, and can improve the efficiency of hydraulic ram.Air tank described in the present embodiment not only can play the effect that regulates hydraulic pressure, can also play the effect of noise-reducing.
The reducer of traditional hydraulic ram is arranged on the outlet port of power pipe, as shown in Figure 2.And the position of the reducer of the present embodiment is in the position of drain valve.Such variation is played critical effect to the efficiency of the overall volume of hydraulic ram.Comparison diagram 1 and Fig. 2 can significantly see the difference of this enforcement and traditional hydraulic ram.
Reducing loss of head is the important channel of improving hydraulic ram efficiency.On hydraulics, have an important principle to be, the key element with loss of head preferably can concentrate in together, and due to the interference effect between key element, can reduce loss of head.Such as certain system has key element valve, joint, three key elements of elbow, if the distance between three key elements is relatively far away, the loss of head of three key elements is only the relation being added, if but three key elements are concentrated in together, its loss of head is no longer the relation being added, but a complicated relation, its loss of head will be calculated and test just and can draw according to the feature of each key element and position relationship, but is totally to have reduced loss of head.
In the ordinary course of things, pump housing flow channel length is more much smaller than power pipe, and its loss of head is mainly local head loss, and frictional head loss is negligible.The pump housing of hydraulic ram and local head loss around thereof are larger, and its loss of head is mainly comprised of the local head loss of reducer, elbow and drain valve.
The annexation of tradition hydraulic ram is: power pipe connects reducer, and reducer connects the pump housing, pump housing bridge piece, and bend pipe connects drain valve.Between such annexation reducer and bend pipe, by the pump housing, separated, far away apart from bend pipe and drain valve.The loss of head of reducer, bend pipe and drain valve can only be calculated separately like this, and the loss of head of whole pump needs the loss of head of above-mentioned three key elements to be added.
The present embodiment, by the position transfer of reducer, is concentrated reducer, elbow and drain valve to put together, and the whirlpool between three is interfered with each other, and reduces loss of head.
When power pipe is identical with pump housing aperture sectional area, both local head losses are basic identical.In other words, the orifice diameter of the present embodiment pump housing is set to equate with the orifice diameter of power pipe, the power pipe of the more traditional hydraulic ram of its loss of head connects the mode that reducer connects the pump housing again, has reduced this local loss of head, has improved this local hydraulic performance.
The local head loss of comprehensive above-mentioned two positions, although loss of head increases to some extent in this part of bend pipe, reducer and drain valve, but deduct between power pipe and the pump housing loss of head causing owing to removing reducer, loss of head on the whole will decline to some extent.Therefore, the loss of head of the more traditional hydraulic ram structure of structure described in the present embodiment reduces theoretically, this conclusion after experiment in obtained the support of data.
Consider that the water delivery lift of hydraulic ram is generally far longer than the acting head of hydraulic ram, water delivery flow is far smaller than the flow of drain valve, and the water hammer pressure that excessive delivery valve orifice diameter is closed generation for raising drain valve is disadvantageous, for example, the flow change amount of closing rapidly when drain valve is identical with the flow change amount size of same time delivery valve unlatching, during opposite direction, can produce water hammer pressure hardly, so the port size of delivery valve should be far smaller than drain valve, in other words, what employing pump housing sectional area was equal to or less than power pipe is rational.
Structure described in the present embodiment has not only improved the efficiency of hydraulic ram, and also has compact structure, lightweight advantage.This advantage is particularly important in the manufacture of large-scale hydraulic ram, in identical material situation, if parameter, the flow of power pipe and drain valve are identical, suppose the flap sectional area of drain valve:
a d = a= a 0 , wherein: afor power pipe sectional area, a 0 for drain valve orifice area, a d for drain valve flap area.
In order to there is good hydraulic performance, need to consider the impact that drain valve flap takies runner, therefore require traditional hydraulic ram design to meet following condition,
a tc = a bc = a 1c >=2A, wherein: a 1 for reducer discharge area, a t for pump housing sectional area, a b for bend pipe sectional area, subscript crepresent traditional hydraulic ram.
And the present embodiment:
a 1n - a d >= a= a tn = a bn = a 0 , subscript wherein nrepresent hydraulic ram described in the present embodiment.
So have:
Be that the duplicate ratio of hydraulic ram diameter is described in traditional hydraulic ram and the present embodiment:
That is:
?,
Therefore,, in the situation that pipe thickness is identical, the weight of traditional hydraulic ram pump housing, bend pipe, power pipe is the present embodiment doubly.It should be noted that, for identical bearing capacity, along with reducing of pump housing Flow diameter, pump housing wall thickness also can reduce.This point has very important economic value for large-scale hydraulic ram, can greatly reduce size and the weight of the pump housing.
Reducer can have various ways: can be toroidal (frustoconic shape) increaser, or cylindrical sudden expansion pipe, or be the shapes such as sudden expansion pipe that hemisphere is combined with cylinder.
The experiment of carrying out according to the present embodiment shows that the hydraulic ram described in the present embodiment is significantly improved with traditional hydraulic ram phase specific efficiency.
Hydraulic ram major parameter according to the present embodiment design is: the pump housing of the pump housing and 90 °bend pipe internal diameter is 100m; Increaser adopts reducer fitting, import inside diameter D=100mm, outlet inside diameter D 1=200mm, length L=152mm.Power pipe range 13m, internal diameter 0.1m, introduces hydraulic ram water from water tank.
Overall drag coefficient ξ and the drain valve stroke S of bend pipe, reducer and the drain valve of actual measurement vfunction relation list in table 1, wherein at S vduring=30-40mm ξ=1.85-2.39, actual measurement shows as drain valve work range S vduring=30mm, water delivery flow during same function head H and efficiency are maximum, corresponding steady flow resistance coefficient ξ=2.39.As a comparison, in table 1, also listed famous Wilcox hydraulic ram (53mm bore) drain valve ξ-S vfunction relation, this hydraulic ram recommended work range S v=12mm, corresponding steady flow resistance coefficient ξ=2.5.
It should be noted that hydraulic ram described in the present embodiment in table 1 ξoverall drag coefficient, comprising the resistance coefficient of bend pipe, curve surface gradual-enlargement pipe and drain valve, so its minimum value ξ min =1.85 than the minimum drag coefficient of Wilcox hydraulic ram drain valve ξ min =1.37 is large.
Yet, if by the bend pipe resistance coefficient of Wilcox hydraulic ram ξ b =0.26, reducer resistance coefficient ξ d =0.4, inclusive words, the comprehensive minimum drag coefficient of Wilcox hydraulic ram bend pipe, reducer and drain valve is:
ξ min=1.37+0.225+0.4=2.025,
Be greater than hydraulic ram described in the present embodiment ξ min=1.85.The pump body structure bodily form compact structure, lightweight not only of hydraulic ram described in this explanation the present embodiment, and there is the benefit that reduces pump housing overall drag coefficient, its reason is that bend pipe, reducer, the drain valve of the hydraulic ram described in the present embodiment is closely connected and makes the athletic meeting phase mutual interference of current separately, causes overall drag coefficient ξslightly reduce.
Embodiment two:
The present embodiment is embodiment one improvement, is that embodiment one is about the refinement of reducer.Reducer described in the present embodiment is crossed the conical butt that is shaped as on the vertical plane of gyration center axis.
Reducer is a kind of pipeline of variable cross section, and the reducer described in the present embodiment is the reducer of gradually expanding shape, and the sectional area of pipe increases gradually, forms tubaeform or frustoconic shape, and it is conical butt by the sectional shape in the vertical plane of gyration center line.Two symmetrical oblique lines of frustum of a cone, can be straight lines, can be also curves.If the oblique line of frustum of a cone is aduncate curve, it is tubaeform turning round shape.If the oblique line of frustum of a cone is straight line, turning round shape is frustoconic shape, as shown in Figure 1.
Embodiment three:
The present embodiment is embodiment one improvement, is that embodiment one is about the refinement of reducer.Reducer described in the present embodiment is crossed the rectangle that is shaped as on the vertical plane of gyration center axis.
Reducer described in the present embodiment is saltant type, and caliber changes from small to big in a very short distance, and it is by being shaped as the uncovered the other end in one end with the cylindrical shape of end face, the similar step in end on the vertical plane of gyration center line.The connection part of end face and cylinder can be more sharp-pointed right angle, can be also larger arc transition.
Embodiment four:
The present embodiment is embodiment three improvement, is the refinement of embodiment three reducer that is rectangle about cross section.The base angle of the reducer described in the present embodiment and bend pipe connection part is 90 degree, as shown in Figure 3.
Described in the present embodiment 90 degree base angle refers to more sharp-pointed right angle.In manufacture process, yes allows for suitable, smaller arc transition.
Embodiment five:
The present embodiment is embodiment three improvement, is the refinement of embodiment three reducer that is rectangle about cross section.The base angle of the reducer described in the present embodiment and bend pipe connection part is arc transition, as shown in Figure 4.
Described in the present embodiment, the radius of arc of arc transition can reach the poor of the Outside diameter of reducer and the end diameter of bend pipe joint, if continue to increase, becomes the little cydariform in large one end, one end again.
Finally it should be noted that, below only unrestricted in order to the technical solution of the utility model to be described, although the utility model 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 the technical solution of the utility model (such as the shape of the pump housing, intake pipe, drain valve, outlet valve, air tank etc., Placement etc.), and not depart from the spirit and scope of technical solutions of the utility model.

Claims (5)

1. a hydraulic ram, comprise: power pipe, described power pipe is connected with the pump housing, and the pump housing and bend pipe, vertical intake pipe bottom are connected, and described intake pipe is connected with delivery valve, described delivery valve is connected with air tank, described air tank is connected with outlet pipe, it is characterized in that, the sectional area of described power pipe equates with the sectional area of the pump housing, bend 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.
2. hydraulic ram according to claim 1, is characterized in that, described reducer is crossed the conical butt that is shaped as on the vertical plane of gyration center axis.
3. hydraulic ram according to claim 1, is characterized in that, described reducer is crossed the rectangle that is shaped as on the vertical plane of gyration center axis.
4. hydraulic ram according to claim 3, is characterized in that, the base angle of described reducer and bend pipe connection part is 90 degree.
5. hydraulic ram according to claim 3, is characterized in that, the base angle of described reducer and bend pipe connection part is arc transition.
CN201420161742.8U 2014-04-04 2014-04-04 Water hammer pump Expired - Fee Related CN203743092U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867500A (en) * 2014-04-04 2014-06-18 北京宇豪胜水利科技咨询有限公司 Hydraulic ram pump
CN104121240A (en) * 2014-08-07 2014-10-29 北京宇豪胜水利科技咨询有限公司 Resistance and vibration reduction hydraulic ram pump
CN104454491A (en) * 2014-10-29 2015-03-25 中国水利水电科学研究院 Experimental method and experimental platform for adjustable high-lift water hydraulic ram pump
CN105145285A (en) * 2015-08-07 2015-12-16 柳超 Energy-saving watering sprinkler based on hydraulic ram
CN105735421A (en) * 2016-02-29 2016-07-06 河海大学 Water hammer protection structure and method for reducing total volume of air tanks
CN105889142A (en) * 2016-04-22 2016-08-24 中国水利水电科学研究院 Gas explosion pump device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867500A (en) * 2014-04-04 2014-06-18 北京宇豪胜水利科技咨询有限公司 Hydraulic ram pump
CN103867500B (en) * 2014-04-04 2016-08-24 北京宇豪胜水利科技咨询有限公司 A kind of hydraulic ram
CN104121240B (en) * 2014-08-07 2016-08-24 北京宇豪胜水利科技咨询有限公司 A kind of drag reduction vibration damping hydraulic ram
CN104121240A (en) * 2014-08-07 2014-10-29 北京宇豪胜水利科技咨询有限公司 Resistance and vibration reduction hydraulic ram pump
CN104454491A (en) * 2014-10-29 2015-03-25 中国水利水电科学研究院 Experimental method and experimental platform for adjustable high-lift water hydraulic ram pump
CN105145285A (en) * 2015-08-07 2015-12-16 柳超 Energy-saving watering sprinkler based on hydraulic ram
CN105735421A (en) * 2016-02-29 2016-07-06 河海大学 Water hammer protection structure and method for reducing total volume of air tanks
CN105735421B (en) * 2016-02-29 2017-11-03 河海大学 Reduce the protecting water hammer structure and method of air tank total measurement (volume)
CN105889142A (en) * 2016-04-22 2016-08-24 中国水利水电科学研究院 Gas explosion pump device
CN105889142B (en) * 2016-04-22 2018-02-27 中国水利水电科学研究院 A kind of gas explosion pump installation

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