CN109630471A - A kind of induction apparatus of incidence angle variable degree and axial position - Google Patents
A kind of induction apparatus of incidence angle variable degree and axial position Download PDFInfo
- Publication number
- CN109630471A CN109630471A CN201811383824.6A CN201811383824A CN109630471A CN 109630471 A CN109630471 A CN 109630471A CN 201811383824 A CN201811383824 A CN 201811383824A CN 109630471 A CN109630471 A CN 109630471A
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- China
- Prior art keywords
- suction chamber
- injector
- nozzle
- control
- induction apparatus
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses the induction apparatus of a kind of incidence angle variable and axial position.The present invention includes that induction apparatus is mainly made of injector, drainage import, flap nozzle, control-rod and precession screw.Pump inlet is linked together with preceding suction chamber, suction chamber outlet(discharge) flange is linked together with rear suction chamber afterwards, wherein it is bolted together between flap nozzle and control-rod by connection, the rotation direction for adjusting universal joint can be facilitated by the promotion of precession screw, so that the incident angle of flap nozzle driving fluid changes, and then pressure compensation is carried out to low-pressure fluid and improves the anti-cavitation performance of pump so that impeller eye flow regime is best.Injector is cooperated by the concave-convex sliding slot of front and back suction chamber, can determine optimal position in the axial direction by sliding, to facilitate the best angle of fluid incident, further increases the cavitation resistive property of the pump housing.
Description
Technical field
The present invention relates to a kind of novel induction apparatus, a kind of precisely incident angle and axial position of can change
Novel induction apparatus.By flexibly changing incident angle and axial position, so that impeller eye flow regime is best, to improve
The anti-cavitation performance of pump.
Background technique
As the high speed of pump develops, impeller eye pressure is further decreased, and the anti-cavitation performance for improving pump is more prominent.
Therefore, using induction apparatus, the high-pressure fluid of pump discharge is introduced at pump intake, improves the Fluid pressure at pump intake, from
And the anti-cavitation performance of pump is improved, it is a kind of highly effective technological means.
However, the inlet angle of current induction apparatus is all fixed and invariable.When pump condition changes in flow rate, fixed
Incident angle has been unable to satisfy optimum performance requirement.Therefore, it is quite necessary to propose a kind of novel injection of incidence angle variable degree
Device.Based on this, the present invention proposes a kind of novel induction apparatus of incidence angle variable degree, can while changing incident angle
To change simultaneously axial incoming position.Therefore, the operating condition adaptation range of pump anti-cavitation performance can be widened significantly.
Summary of the invention
The present invention is in view of the above-mentioned problems, propose the induction apparatus of a kind of incidence angle variable degree and axial position.
The technical solution adopted by the present invention to solve the technical problems is as follows:
The present invention includes flap nozzle, control-rod, precession screw, the convex sliding slot of rear suction chamber, the convex sliding slot of preceding suction chamber, rear limit
Position screw, front limit screw, preceding suction chamber concave slide groove and universal joint；Low-pressure fluid from pump inlet enter, flow through before suction chamber and
Afterwards after suction chamber, suction chamber outlet outflow forms high-pressure fluid after after suction chamber outlet(discharge) flange；High-pressure fluid is inhaled after passing through
Partial high pressure fluid is entered injector ante-chamber from the drainage import of injector, passed through by the external drainage tube of water chamber outlet(discharge) flange
Injector ante-chamber entrance port flows into fixed nozzle；Control-rod controls the rotation direction of the universal joint in injector back cavity, passes through rotation
Precession or back-out into screw carry out push lever, thus to control the optimal incident angle in fact of flap nozzle, flap nozzle and control
It is to be connected between bar processed by connecting bolt, the low-pressure fluid of the high-pressure fluid flowed out from flap nozzle and pump inlet entrance
It is gathered together, improves the Fluid pressure of pump intake, to improve the cavitation resistive property of pump；The recessed cunning of preceding suction chamber on injector
Slot is matched with the convex sliding slot of preceding suction chamber on preceding suction chamber, the convex sliding slot of rear suction chamber on rear suction chamber simultaneously, while preceding suction
It is respectively provided with front limit screw and rear stop screw on the convex sliding slot of water chamber and the convex sliding slot of rear suction chamber, enables injector in axis
The axial movement limited to position further increases the cavitation resistive property of pump.
Described universal joint one end is mounted on fixed nozzle, is linked together with fixed nozzle；Flap nozzle is mounted on ten thousand
To section the other end on, be linked together with universal joint, from fixed nozzle flow out high-pressure fluid, flow into flap nozzle, by this ten thousand
The setting of Xiang Jieyu flap nozzle enables flap nozzle to be flexibly freely rotated in injector back cavity.
The injector ante-chamber is annular in shape, and is circumferentially evenly arranged on the side wall being connected with injector back cavity multiple
Fixed nozzle.
The injector back cavity is in stepped annular, and the side being connected with rear suction chamber is built-in with annular connection sheet, more
One end of a control-rod is arranged in annular connection sheet by connection bolt, the other end of control-rod and corresponding flap nozzle phase
Connection.
Described one precession screw of the present invention controls all control-rods.
Technical effect of the invention:
The present invention makes the incidence angle of induction apparatus and axial position become practical using universal joint and sliding slot.
The precession or back-out of precession screw carry out push lever, and control-rod rotates universal joint, thus the incident angle of flap nozzle
It changes, the high-pressure fluid of flap nozzle outflow and the low-pressure fluid of pump inlet converge, so that the high-pressure fluid led back is to leaf
The low-pressure fluid for taking turns inlet carries out energy supplement, to adjust incident effect when fluid enters impeller eye, raising is pumped into
The Fluid pressure of mouth, to improve the cavitation resistive property of pump.It is cooperated, is made by sliding slot between injector and suction chamber simultaneously
Obtaining injector can be axially moved in axial position, further increase the cavitation resistive property of pump.
Detailed description of the invention
Fig. 1 is induction apparatus internal structure view；
Fig. 2 is induction apparatus external view；
Fig. 3 is front and back suction chamber；
Fig. 4 is injector；
Fig. 5 is injector interior views；
Fig. 6 is oblique view inside injector；
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing, in Fig. 1~6, the present invention includes
Preceding suction chamber 1, injector 2, rear suction chamber 3, pump inlet 4, rear suction chamber outlet 5, drainage import 6, rear suction chamber outlet(discharge) flange
7, the convex sliding slot 11 of flap nozzle 8, control-rod 9, precession screw 10, rear suction chamber, the convex sliding slot 12 of preceding suction chamber, rear stop screw
13, front limit screw 14, preceding suction chamber concave slide groove 15, injector ante-chamber 16, injector back cavity 17, injector ante-chamber entrance port
18, fixed nozzle 19, universal joint 20, connection bolt 21.
As shown in Figure 1 and Figure 2, the present invention is the induction apparatus of a kind of incidence angle variable and axial position, by flap nozzle 8,
The convex sliding slot 11 of control-rod 9, precession screw 10, rear suction chamber, the convex sliding slot 12 of preceding suction chamber, rear stop screw 13, front limit screw
14, preceding suction chamber concave slide groove 15 and universal joint 20 etc. form, and structure is simple, is easy to implement induction apparatus incidence angle and axial position
Change, to improve the cavitation resistive property of pump.Low-pressure fluid enters from pump inlet 4, before flowing through after suction chamber 1, inhales after flow direction
Water chamber 3 forms high-pressure fluid, high-pressure fluid sub-fraction after flowing out by rear suction chamber outlet(discharge) flange 7 behind suction chamber outlet 5
Injector ante-chamber 16 is flowed by the external drainage tube of rear suction chamber outlet(discharge) flange 7.
Described 20 one end of universal joint is mounted on fixed nozzle 19, is linked together with fixed nozzle 19；Flap nozzle 8 is pacified
On the universal joint other end, it is linked together with universal joint 20, the high-pressure fluid flowed out from fixed nozzle flows into flap nozzle,
By the setting of the universal joint and flap nozzle, flap nozzle is flexibly freely rotated in injector back cavity.
The injector ante-chamber 16 is annular in shape, and is circumferentially evenly arranged on the side wall being connected with injector back cavity 17
Multiple fixed nozzles 19.
The injector back cavity 17 is in stepped annular, and the side being connected with rear suction chamber 3 is built-in with annular connection sheet,
One end of multiple control-rods 9 is arranged in annular connection sheet by connection bolt 21, the other end of control-rod 9 and corresponding activity
Nozzle 8 is connected.
As shown in Figure 5, Figure 6, it is the inside partial enlarged view of induction apparatus proposed by the present invention, passes through precession screw 10
Precession or back-out carry out push lever 9, one precession screw 10 of the present invention control all control-rods 9, control-rod 9 and activity
It is connected between nozzle 8 by connecting bolt 21, structure is simple, while can be improved the company between flap nozzle 8 and control-rod 9
Connect intensity.Control-rod 9 controls the angle change of the universal joint 20 in injector back cavity 17, passes through universal joint 20 and flap nozzle 8
Setting, thus control flap nozzle 8 flexibly be freely rotated, so as to increased or decrease the incident angle of fluid, be convenient for
An optimal incident angle is found, to adjust incident effect when high-pressure fluid enters impeller eye.Injector ante-chamber enters
The fluid that loophole 18 flows out, flows to fixed nozzle 19, and fixed nozzle 19 flows to flap nozzle 8, the high pressure that flap nozzle 8 flows out again
Fluid carries out energy supplement to the low-pressure fluid at impeller eye, fully ensures that Fluid pressure is higher than fluid pressure itself value, makes
It is best to obtain impeller eye flow regime, to improve the cavitation resistive property of pump.
As shown in Figure 3, Figure 4, rear stop screw 13 and front limit screw 14 are separately mounted to the convex cunning of corresponding rear suction chamber
Preceding suction chamber concave slide groove 15 and the convex sliding slot 11 of rear suction chamber and preceding suction on slot 11 and the convex sliding slot 12 of preceding suction chamber, on injector 2
The convex sliding slot 12 of water chamber cooperates so that in axial position to carry out axial limit mobile for injector 2, thus improve again into
The high-pressure fluid penetrated further increases the cavitation resistive property of pump to the energy compensating of low-pressure fluid.
Claims (5)
1. a kind of induction apparatus of incidence angle variable degree and axial position, it is characterised in that including flap nozzle (8), control-rod
(9), precession screw (10), the convex sliding slot of rear suction chamber (11), the convex sliding slot of preceding suction chamber (12), rear stop screw (13), front limit
Screw (14), preceding suction chamber concave slide groove (15) and universal joint (20)；Low-pressure fluid enters from pump inlet (4), flows through preceding suction chamber
(1) and after rear suction chamber (3), from rear suction chamber outlet (5), outflow forms high-pressure fluid after suction chamber outlet(discharge) flange (7)；It is high
Press fluid by the external drainage tube of rear suction chamber outlet(discharge) flange (7), by partial high pressure fluid from the drainage import of injector (2)
(6) enter injector ante-chamber (16), by injector ante-chamber entrance port (18), flow into fixed nozzle (19)；Control-rod (9) control
The rotation direction of universal joint (20) in injector back cavity (17), pushes control by the precession or back-out of precession screw (10)
Bar (9), to be to pass through company between flap nozzle (8) and control-rod (9) to control the optimal incident angle in fact of flap nozzle (8)
Connecting bolt (21) is connected, and the low-pressure fluid that the high-pressure fluid flowed out from flap nozzle (8) enters with pump inlet (4) converges in
Together, the Fluid pressure of pump intake is improved, to improve the cavitation resistive property of pump；Preceding suction chamber concave slide groove on injector (2)
(15) simultaneously with the convex sliding slot of preceding suction chamber (12) on preceding suction chamber (1), the convex sliding slot of rear suction chamber (11) on rear suction chamber (3)
Match, at the same be respectively provided on the convex sliding slot of preceding suction chamber (12) and the convex sliding slot of rear suction chamber (11) front limit screw (14) and after
Stop screw (13), so that injector (2) can further increase the anti-gas of pump in the axial movement that axial position is limited
Corrosion energy.
2. the induction apparatus of a kind of incidence angle variable degree and axial position according to claim 1, it is characterised in that universal
Section (20) one end is mounted on fixed nozzle (19), is linked together with fixed nozzle (19)；Flap nozzle (8) is mounted on universal joint
On the other end, be linked together with universal joint (20), from fixed nozzle flow out high-pressure fluid, flow into flap nozzle, by this ten thousand
The setting of Xiang Jieyu flap nozzle enables flap nozzle to be flexibly freely rotated in injector back cavity.
3. the induction apparatus of a kind of incidence angle variable degree and axial position according to claim 2, it is characterised in that described
Injector ante-chamber (16) annularly, and be circumferentially evenly arranged with multiple fixations on the side wall being connected with injector back cavity (17)
Nozzle (19).
4. the induction apparatus of a kind of incidence angle variable degree and axial position according to claim 3, it is characterised in that injection
Device back cavity (17) is in stepped annular, and the side being connected with rear suction chamber 3 is built-in with annular connection sheet, multiple control-rods (9)
One end is arranged in annular connection sheet by connection bolt (21), the other end of control-rod (9) and corresponding flap nozzle (8) phase
Connection.
5. the induction apparatus of a kind of incidence angle variable degree and axial position according to claim 3, it is characterised in that one
Precession screw (10) controls all control-rods (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383824.6A CN109630471B (en) | 2018-11-20 | 2018-11-20 | Injection device with variable incident angle and axial position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383824.6A CN109630471B (en) | 2018-11-20 | 2018-11-20 | Injection device with variable incident angle and axial position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630471A true CN109630471A (en) | 2019-04-16 |
| CN109630471B CN109630471B (en) | 2020-10-09 |
Family
ID=66068465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383824.6A Active CN109630471B (en) | 2018-11-20 | 2018-11-20 | Injection device with variable incident angle and axial position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630471B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU872795A1 (en) * | 1979-09-07 | 1981-10-15 | Предприятие П/Я В-2504 | Pump |
| SU1168749A1 (en) * | 1983-12-29 | 1985-07-23 | МВТУ им.Н.Э.Баумана | Centrifugal pump |
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN201599207U (en) * | 2010-02-05 | 2010-10-06 | 山东博泵科技股份有限公司 | Rotary regulation-type pump inlet complementary energy device |
| CN105090044A (en) * | 2014-11-21 | 2015-11-25 | 衢州学院 | Centrifugal pump |
| CN106837887A (en) * | 2017-03-14 | 2017-06-13 | 浙江理工大学 | The liquid ejection device of injection Parameter adjustable |
| CN107956737A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Low net positive suction head low-pressure fluctuation centrifugal pump |
-
2018
- 2018-11-20 CN CN201811383824.6A patent/CN109630471B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU872795A1 (en) * | 1979-09-07 | 1981-10-15 | Предприятие П/Я В-2504 | Pump |
| SU1168749A1 (en) * | 1983-12-29 | 1985-07-23 | МВТУ им.Н.Э.Баумана | Centrifugal pump |
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN201599207U (en) * | 2010-02-05 | 2010-10-06 | 山东博泵科技股份有限公司 | Rotary regulation-type pump inlet complementary energy device |
| CN105090044A (en) * | 2014-11-21 | 2015-11-25 | 衢州学院 | Centrifugal pump |
| CN106837887A (en) * | 2017-03-14 | 2017-06-13 | 浙江理工大学 | The liquid ejection device of injection Parameter adjustable |
| CN107956737A (en) * | 2017-12-16 | 2018-04-24 | 山东双轮股份有限公司 | Low net positive suction head low-pressure fluctuation centrifugal pump |
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| Publication number | Publication date |
|---|---|
| CN109630471B (en) | 2020-10-09 |
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