CN1263957C

CN1263957C - Method for transporting fluid by using super-speed rotational flows and devices

Info

Publication number: CN1263957C
Application number: CN 03117282
Authority: CN
Inventors: 李克平; 李克海
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-30
Filing date: 2003-01-30
Publication date: 2006-07-12
Anticipated expiration: 2023-01-30
Also published as: CN1431404A

Abstract

The present invention relates to a method and a device for transporting a fluid at a high speed, wherein device makes a high-speed fluid thrown out from a blade wheel enter a diversion trench which surrounds the blade wheel; the high-speed fluid which enters from the diversion trench along the tangential direction forms rotational flow discharged from the outlet, or the diversion trench of a direct ratio is thrown out along the circumference; the device is provided with an inlet, the outlet and a blade wheel chamber; a pump case comprises an external ring sleeve and an internal ring sleeve or more components; the internal curved surfaces or planes of the two ring sleeves or each component are surrounded into the blade wheel chamber, the diversion trench, the inlet and the outlet; the internal part of the pump case is provided with an isometric rotational flow pipe or a reducing rotational flow pipe, and both sides of the diversion trench are totally provided with streamlined cambered surfaces. The device cancels partition plates, makes the fluid flow in the direction of the same tangential line, keeps the speed when the fluid is thrown out of the blade wheel, reduces the kinetic energy loss of the fluid, and increases the efficiency for about 10 percentage points. The present invention can be widely used for the improvement and the design of pumps, blowers and even propellers.

Description

High-speed rotational conveyance fluid method and device

Technical field the present invention relates to a kind of method and device of high-speed rotational conveyance fluid.

Background technique is well-known, the method for existing centrifugal pump class conveyance fluid, owing to have mechanical loss, hydraulic loss and volumetric loss, and the efficient of pump, promptly useful horsepower and the ratio of air horsepower are always less than 100%.According to investigations, the efficiency value of most of pumps all has only 40-50% in practice.In order to reduce useless power consumption, improve the efficient of pump, people are seeking various ways for a long time, and existing pump structure structure has been proposed a lot of improvement projects, have also obtained some progress.Wherein comparatively representational is No. 92110787 patent that bulletin is gone up by China's on June 4th, 1997 " Gazette of Patent for Invention ", " two centrifugal conveyance fluid methods and device thereof ", this patent has proposed the pump case of enclosed type impeller is changed into over against the open guiding gutter of impeller, if driving the material seam into around the annulus taper pipe of guiding gutter connects with guiding gutter, the high-velocity fluid that allows impeller throw away enters pipe along tangent line and forms eddy flow and strengthen action of centrifugal force, wants to reduce energy loss with this.According to record, this method has the effect that improves pump efficiency to a certain extent.

Pump case is transformed into helps the scheme that fluid flows and be undoubtedly feasible, but this patent is when proposing that guiding gutter and taper pipe are set, establishing a partition panel in the pump case bottom again is divided into two the taper pipe, certainly will form bigger obstruction to the swiftly flowing fluid of right half part like this, cause new mechanical loss and hydraulic loss, the purpose of its effect and this patent is run in the opposite direction; In addition, the pump case of this patent has been designed to symmetry, want that the mobile way of outlet that fluid is made progress from the left and right sides respectively is unpractical, because under the powerful effect of impeller, fluid is always along same tangential and outside radial motion, fluid on the right side will move upward, and just must to make opposite direction into just possible, the commentaries on classics of so will giving a discount at the partition panel place, lose part energy simultaneously, this is to say under the situation of the never fluid obstacle of back, in fact the back still has endlessly fluid squeeze, it is impossible that the fluid of front wants to turn back, actual situation can only be that the fluid by the back forms pressure, and fluid is pressed to outlet.The long and is exactly the effect of having offset the two centrifugal cyclones that form previously greatly.

Goal of the invention the objective of the invention is to propose a kind of in the middle of no partition panel, fluid flow do not turn back, fluid is from the method and the corresponding device thereof of same direction or the high-speed rotational conveyance fluid that throws away towards periphery, its while can be satisfied the impeller blade angle beta expeditiously ₂The needs that change are to overcome the deficiencies in the prior art.

The method of the high speed conveyance fluid that content the present invention of invention proposes, it is characterized in that allowing the high-velocity fluid that throws away from impeller enter the guiding gutter of wound impeller, tangentially enter cyclone tube from guiding gutter again and form eddy flow from the outlet discharge, perhaps discharge towards periphery, need not cyclone tube this moment from guiding gutter.

Cyclone tube is around guiding gutter and the isometrical pipe or the reducer pipe that communicate with outlet.

The starting point place of the cyclone tube of reducing is a blind spot, the diameter minimum at blind spot place, and cyclone tube and outlet pipe joining are terminal point, diameter maximum herein, the helix of the center line of cyclone tube for gradually opening.

The bi-side of guiding gutter are fusiform cambered surface, and outer side surface and cyclone tube junction are tangent binding.

The device of the high-speed rotational conveyance fluid that the present invention proposes, it has inlet, outlet and blade wheel chamber, it is characterized in that pump case is made up of outer snare and interior snare or more a plurality of component, the curved surface or the plane of two snares or each assembly inboard surround blade wheel chamber, guiding gutter, entrance and exit.

Outer snare and interior snare or more a plurality of component are formed, and the curved surface or the plane of two snares or each assembly inboard surround cyclone tube.

The part tube wall of the outer side surface of guiding gutter and cyclone tube is made of the negative camber of outer snare, and another part tube wall of the inner side surface of guiding gutter and cyclone tube is made of interior snare.

The guiding gutter Way out that the irrotational flow pipe cooperates and importer are to opposite.

Snare and the inner ring guiding gutter bi-side that put formation are fusiform cambered surface outside, and outer side surface and cyclone tube junction are tangent binding.

Cyclone tube is the pipe of isometrical or reducing, and starting point is positioned at the outer pipe place.

The transversal diameter of reducing cyclone tube becomes big to terminal gradually from starting point.

Outer snare lower curtate has pressure tap, and there is guide plate inner ring cover ingress, so that monitoring state and current stabilization.

This method that the present invention of invention effect proposes owing to cancelled partition panel, allows fluid flow from same tangent direction, speed when having kept fluid to throw away impeller, and strengthened the effect of eddy flow, reduce the kinetic energy rejection of fluid, thereby improved the efficient of this method conveyance fluid; And use the device that this method proposes, can satisfy the impeller blade angle beta expeditiously ₂The needs that change, make the performance of device work approach desirable Euler-head curve more, thereby be widely used in pump class and blower fan, particularly widely used Centrifugal water pump, sand pump and various industrial fluids pump, efficient height, power consumption is little, energy-saving and cost-reducing meaning for people's daily life and activity in production is very great, is that the structure of device is tightly played in addition, and is reasonable in design, easy to manufacture, easy to installation and maintenance.This device also can be used to transform or design the propulsion device of existing boats and ships and aircraft etc. in addition.

Appended drawings 1 is the plan view (normal cross section) of apparatus of the present invention.

Accompanying drawing 2 is apparatus of the present invention A-A sectional drawings.

Accompanying drawing 3 is the high torque flow pump of apparatus of the present invention and the service behaviour curve comparison diagram of existing IS80-65-160 type pump under the clear water condition of same specification.

Each parts among the accompanying drawing 1-2, the label of each several part are as follows:

The 1-outlet; In the 2--outer ring cover connection screw; The 3-guiding gutter; The 4-inlet connects screw; The 5-guide plate; 6-blade wheel chamber; The 7-inlet; Snare in the 8-; The outer snare of 9-; The 10--cyclone tube; The 11-pressure tap; The 12-support.

In the accompanying drawing 3: H ₁The high torque flow pump lift and the capacity relation curve of-apparatus of the present invention; H ₂-IS-65-160 type pumping head and capacity relation curve; η ₁The high torque flow pump efficient and the capacity relation curve of-apparatus of the present invention; η ₂-IS-65-160 type pump efficiency and capacity relation curve.

Embodiment

Example 1

Reach the high torque flow pump of making shown in the accompanying drawing as stated above, impeller diameter 160MM, inlet diameter 80MM, outlet diameter 65MM, the guiding gutter bi-side are to the protruding streamline curved surface in the outside of pump, the wide and impeller consistency of thickness of the end opening of groove, cyclone tube is a reducer pipe, starting point is a cecum, and the place's of accounting for diameter is 65MM eventually, and impeller regulation rotating speed is 2900 rev/mins.The pump contrast is the former pump of existing same specification IS therewith, power of motor 7.5KW, and both do the clear water experiment under same condition in certain water pump works, city.Experimental result shows near the peak efficiency place both basically identicals as shown in Figure 3, the highest to account for place's IS pump slightly high 1 percentage point, and along with opening of water outlet gate valve is big during to full-gear, high torque flow pump still can be stablized water outlet, cavitation phenomenons does not take place, and this moment, capacity reached 90.202M ³/ H, efficient 50.276%.And the maximum capacity of IS pump under identical working condition only is 77.339M ³/ H, efficient 41.483% is opened big water outlet gate valve again and cavitation then just occurred.High torque flow pump improves nearly 10 percentage point than IS pump efficiency.

From the contrast properties plotted curve of accompanying drawing 3, can further find out:

High torque flow pump is at the peak efficiency place, and capacity is 61% of a biggest place, after this along with the continuous increase of capacity, efficiency curve slowly descends, and the efficiency curve of IS pump correspondence sharply descends, and is rendered as precipitous state, when outlet gate valve standard-sized sheet, reach maximum capacity place, the efficiency value η of high torque flow pump ₁Be 50.3%, IS pump efficiency value η ₂But rapid drawdown is 40.3%.

At present, the efficient that academicly generally believes centrifugal pump is to be difficult to improve under the prior art condition, even if can reach the 3-4% international most advanced level by improving.This routine effect proves that the solution of the present invention can make the efficient of pump promote significantly really.

The efficiency curve of high torque flow pump is mild, and head curve is stable, according to authoritative publication record " efficiency curve is smooth more, and head curve is stable more, and the using scope of pump is just vast more ".

Example 2

On the basis of example 1, do not establish cyclone tube, guiding gutter is extended and divides four strands to be compiled in a pipe outlet towards axial direction, simultaneously the position of import and blade wheel chamber is exchanged, under the impeller diameter situation identical with air horsepower, the performance curve of high torque flow pump is more superior than example 1, illustrates that the structure of not establishing cyclone tube more can effectively reduce useless power consumption, and mechanical loss, hydraulic loss and volumetric loss are littler.The pump volume of just so producing can be big.

Claims

1, a kind of method of high speed conveyance fluid is characterized in that allowing the high-velocity fluid that throws away from impeller enter the guiding gutter of wound impeller, tangentially enters cyclone tube from guiding gutter again and forms eddy flow from outlet stream row, perhaps discharges towards periphery from guiding gutter.

2, method according to claim 1 is characterized in that cyclone tube is around guiding gutter and the isometrical pipe or the reducer pipe that communicate with outlet.

3, method according to claim 1, the starting point place that it is characterized in that the cyclone tube of reducing is a blind spot, the diameter minimum at blind spot place, cyclone tube and outlet pipe joining are terminal point, diameter maximum herein, the helix of the center line of cyclone tube for gradually opening.

4, method according to claim 1 is characterized in that the bi-side of guiding gutter are fusiform cambered surface, and outer side surface and cyclone tube junction are tangent binding.

5, a kind of device of high-speed rotational conveyance fluid, it has inlet, outlet and blade wheel chamber, it is characterized in that pump case is made up of outer snare and interior snare or more a plurality of component, the curved surface of two snares or each assembly inboard or plane surround blade wheel chamber, guiding gutter, entrance and exit, and the curved surface or the plane of outer snare and interior snare or more a plurality of assemblies inboard surround cyclone tube.

6, device according to claim 5, the part tube wall that it is characterized in that the outer side surface of guiding gutter and cyclone tube is made of the negative camber of outer snare, and another part tube wall of the inner side surface of guiding gutter and cyclone tube is made of interior snare.

7, device according to claim 5 is characterized in that the guiding gutter exhaust port direction of irrotational flow pipe cooperation is opposite with impeller fluid inlet direction.

8, device according to claim 5 is characterized in that the guiding gutter bi-side that snare and inner ring outside put formation are fusiform cambered surface, and outer side surface and cyclone tube junction are tangent binding.

9, device according to claim 5 is characterized in that cyclone tube is the pipe of isometrical or reducing, and starting point is positioned at the outer pipe place, and the transversal diameter of reducing cyclone tube becomes big to terminal gradually from starting point.