CN110043474A - A kind of novel jet flow self-priming apparatus - Google Patents
A kind of novel jet flow self-priming apparatus Download PDFInfo
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- CN110043474A CN110043474A CN201910189454.0A CN201910189454A CN110043474A CN 110043474 A CN110043474 A CN 110043474A CN 201910189454 A CN201910189454 A CN 201910189454A CN 110043474 A CN110043474 A CN 110043474A
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- closing disk
- spring
- opening
- airtight cavity
- tube
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000000926 separation method Methods 0.000 claims abstract description 54
- 230000008676 import Effects 0.000 claims abstract description 11
- 230000008602 contraction Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000005213 imbibition Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 33
- 230000005514 two-phase flow Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 235000008429 bread Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
- F04D9/065—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type the driving fluid being a gas or vapour, e.g. exhaust of a combustion engine
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The present invention provides a kind of novel jet flow self-priming apparatus, are installed on pump inlet pipe, comprising: air-water separation chamber；U-tube, U-tube import are connected to air-water separation chamber；Jet stream inlet tube, one end are connected to the U-tube curved mouth of U-tube；Airtight cavity, positioned at the lower section of air-water separation chamber；The room Wen Qiu nozzle is vertically arranged at the lower section of airtight cavity, and the top of the room Wen Qiu nozzle is connected to airtight cavity, and bottom end is connected to pump inlet pipe；Auxiliary exhaust pipe, top are connected to airtight cavity, and bottom end is connected to the room Wen Qiu nozzle, and airtight cavity is connected to by inner cavity gas vent with auxiliary exhaust pipe；Wherein, sequentially connected upper opening and closing disk, lower opening and closing disk, upper spring and lower spring from top to bottom are equipped in the airtight cavity, lower opening and closing disk bottom end is equipped with half bulb stopper cooperated with the room Wen Qiu nozzle；The present invention can reduce operation sequence in start-up course, can be improved efficiency of imbibition, and gas in effective discharge pump reduces the energy of self-priming process consumption.
Description
Technical field
The present invention relates to self-priming apparatus technical field more particularly to a kind of novel jet flow self-priming apparatus.
Background technique
Centrifugal pump transports as a kind of important water conservancy machinery, in chemical industry, fights flood and relieve victims, agricultural irrigation, the south water to north etc.
It occupies an important position in numerous heavy constructions.
However, centrifugal pump requires to pour water into pump chamber, it is ensured that reach certain water in pump before each starting
Amount, can not only make centrifugal pump run well, while avoiding damaging the seal member of centrifugal pump.If manually into
Row is poured water, complicated for operation, low efficiency, also, is all poured water before starting every time, is significantly increased the workload of worker, is reduced
Pump operation starting efficiency.At the same time, traditional self-priming apparatus can not adjust gas-liquid according to pressure in start-up course and void fraction
The rate of departure and biphase gas and liquid flow flow, self-priming mechanism is single in entire start-up course, and self-priming form is relatively fixed, flexibility ratio
It is lower.If thinking the gas-liquid separation rate adaptation of realization self-priming various stages, need manually to be operated manually in each stage,
Implement cumbersome.
Summary of the invention
In response to the deficiencies in the existing technology, it the present invention provides a kind of novel jet flow self-priming apparatus, can not only reduce
Operation sequence in start-up course, and can according to the pressure and void fraction in start-up course, adjust gas-liquid separation rate and
Biphase gas and liquid flow flow realizes that each stage using the mode of corresponding regulative mode, improves efficiency of imbibition, effectively arranges in start-up course
Gas in pumping out, reduces the energy of self-priming process consumption.
The present invention achieves the above technical objects by the following technical means.
A kind of novel jet flow self-priming apparatus, is installed on pump inlet pipe, comprising:
Air-water separation chamber；
U-tube is obliquely installed in the top of the air-water separation chamber, the U-tube import of the U-tube and the air water point
It is connected to from room；
Jet stream inlet tube, one end of the jet stream inlet tube are connected to the U-tube curved mouth of the U-tube；
Airtight cavity, positioned at the lower section of the air-water separation chamber；
The room Wen Qiu nozzle, is vertically arranged at the lower section of the airtight cavity, the top of the room Wen Qiu nozzle with it is described close
The connection of closed chamber body, bottom end is connected to pump inlet pipe；
Auxiliary exhaust pipe, positioned at the outside of the airtight cavity, the top of the auxiliary exhaust pipe and the airtight cavity
Connection, bottom end are connected to the room Wen Qiu nozzle, and side wall of the airtight cavity close to top is equipped with inner cavity gas vent, described
Inner cavity gas vent is connected to the auxiliary exhaust pipe and the airtight cavity；
Wherein, upper opening and closing disk, lower opening and closing disk, upper spring, lower spring, elastic thrust dress are equipped in the airtight cavity
It sets and is parallel to each other with half bulb stopper, the upper opening and closing disk and the lower opening and closing disk, and can be along the inner wall of the airtight cavity
Sliding, and the airtight cavity is divided into inner cavity upper chamber, room and inner cavity upper chamber in inner cavity, the top of the upper spring with it is described
The connection of upper opening and closing disk, the bottom end of the upper spring are connect with the top of the lower spring, the bottom end of the lower spring with it is described
Lower opening and closing disk connection, the upper opening and closing disk are equipped with upper opening and closing disk leak holes, and the lower opening and closing disk, which is equipped with down, to be opened
Axis of the axis of closed disk leak holes, the upper opening and closing disk leak holes and lower opening and closing disk leak holes with the airtight cavity
Line inclination, and inclined direction is opposite；The elasticity thrust brake is located at the upper surface of the upper opening and closing disk, half bulb stopper position
In the lower surface of the lower opening and closing disk, when original state, the upper spring and the lower spring are in compressive state, described
Half bulb stopper is located in the nozzle of the room Wen Qiu, and the outer surface of half bulb stopper can be pasted with the venturi type inner nozzle surface
It closes, the venturi type nozzle is blocked to be connected to the airtight cavity and the auxiliary exhaust pipe.
Preferably, support anchor ring and lower support anchor ring, the upper support anchor ring and institute are additionally provided in the airtight cavity
Stating lower support anchor ring is arc sleeve, and section is semi-circular shape, and the upper support ring bread wraps up in the upper opening and closing disk
Edge, the lower support ring bread wrap up in the lower opening and closing disk, and the upper support anchor ring and the lower support anchor ring outer surface are equal
It is tangent with the inner wall of the airtight cavity.
Preferably, multiple staggeredly grids are equipped in the gas-water separation room, the staggeredly grid uses porous media material
It is made, the staggeredly grid includes two grid sheets, and two grid sheets intersect, and the acute angle of formation is 50 °, two institutes
The crosspoint for stating grid sheet is the one third of entire staggeredly height of grid at a distance from the staggeredly grid top.
Preferably, the diameter of the upper spring is gradually increased from top to bottom, the outer surface of the upper spring bottom end with it is described
The diameter of the tangent contact of the inner wall of closed containing cavity, the lower spring is gradually reduced from top to bottom, the appearance on the lower spring top
Face with the inner wall of the closed containing cavity is tangent contacts.
Preferably, the ratio between the lower spring and the elasticity modulus of the upper spring are 1:1.5, the angle of flare of the upper spring
It is 1.5:1 with the ratio between the angle of throat of the lower spring, longitudinal height of the longitudinal height and lower spring of the upper spring
Than for 1.5:1.
Preferably, the elastic thrust brake is elastic thrust bowl, and the elasticity thrust bowl is hemisphere bowl-type, the elasticity
The ball internal diameter of thrust bowl is 12mm, and ball outer diameter is 20mm.
Preferably, the venturi type nozzle and the closed containing cavity are coaxially disposed, and the inner wall of the venturi type nozzle is
Arcwall face, the venturi type nozzle include contraction section and diffuser, the curvature of the contraction section and the diffuser from top to bottom
Ratio is 2.4:1.
Preferably, the angle between the upper opening and closing disk leakage axially bored line and the axis of the airtight cavity is 25 °, institute
The angle stated between the axis of lower opening and closing disk leak holes and the axis of the airtight cavity is 30 °, and the upper opening and closing disk is let out
The diameter ratio of the diameter and the lower opening and closing disk leak holes that reveal hole is 1:1.5.
Preferably, the angle between the axis of the jet stream inlet tube and the center line of the U-tube is 140 °, described
Angle between the center line of U-tube and the upper surface of the air-water separation chamber is 20 °.
Preferably, the sphere diameter of half bulb stopper is 25mm, and the centre of sphere of half bulb stopper is higher by the lower surface of lower opening and closing disk
3mm。
Beneficial effects of the present invention:
1) present invention is in the first stage of pump startup, due to entering high pressure gas in jet stream inlet tube, so that gas-water separation
Indoor negative pressure constantly carries the discharge of the air in auxiliary exhaust pipe secretly, so that upper opening and closing disk and lower opening and closing disk are constantly lifted
It rises, drives the surface of half bulb stopper to be gradually disengaged with venturi type nozzle, so that pump inlet pipe is formed with auxiliary exhaust pipe import
Connection pumps interior air and is drained into atmosphere by the entrainment of the small flow of subnormal ambient in gas-water separation room into U-bend；Second-order
Section, half bulb stopper completely disengage venturi type nozzle, and pump inlet inner air tube enters air in airtight cavity and pump inlet；Third rank
Section, the water level in pump constantly increases, and biphase gas and liquid flow enters from the room Wen Qiu nozzle, due to upper spring, lower spring, upper opening and closing disk
The effect of leak holes and lower opening and closing disk leak holes, so that biphase gas and liquid flow enters to air-water separation chamber after secondary separation,
The water in biphase gas and liquid flow is further removed, the air isolated is drained into atmosphere with the pressure-air in jet stream inlet tube,
Fourth stage, the water isolated in U-bend are fallen back in air-water separation chamber, moisture two parts reflux of air-water separation chamber accumulation
To pump inlet pipe, and upper opening and closing disk and lower opening and closing disk restore to original state, therefore, before the present invention has blocked inlet tube
Air enters in pump, reduces the noise that pump occurs cavitation and generated by biphase gas and liquid flow, meanwhile, the present invention not only can be with
Operation sequence in start-up course is reduced, and gas-liquid separation rate can be adjusted according to the pressure and void fraction in start-up course
And biphase gas and liquid flow flow, realize that each stage using the mode of corresponding regulative mode, improves efficiency of imbibition, has in start-up course
Gas in discharge pump is imitated, the energy of self-priming process consumption is reduced.
2) present invention is using upper opening and closing disk and lower opening and closing disk, when the opening and closing circle for flowing through different oblique forms on two disks
When the direction difference of disk leak holes, and then cause to open and close disk and the various forms of opposite directions torsions of lower opening and closing disk generation
Square, so that different degrees of contraction spacing or different degrees of increasing occur for the upper spring and lower spring that connect between two disks
Big spacing promotes starting efficiency to accelerate gas-liquid separation or accelerating liquid reflux.
3) entanglement is dispersed with multiple staggeredly grids in gas-water separation room in the present invention, effectively to not thorough gas-liquid separation
Two phase flow is disturbed, it is sufficiently separated.Meanwhile staggeredly the crosspoint of grid be located at entire staggeredly height of grid away from
At the one third of top, since the two phase flow water content in gas-water separation room at this time is lower, biphase gas and liquid flow is mainly distributed on
Air-water separation chamber top.Therefore, by crosspoint be located at entire staggeredly height of grid at the one third of top, be conducive into
One step removes the water in biphase gas and liquid flow.
4) in start-up course of the present invention, biphase gas and liquid flow enters in U-tube after the grid that interlocks, in U-tube curved mouth
Place is since the density of water is larger, and water is separated under the influence of centrifugal force, falls after rise to gas-water separation room, and the sky isolated
Gas is drained into atmosphere with the pressure-air in jet stream inlet tube, reduces the discharge capacity of water in start-up course, effectively shortens starting
Time.
5) lower in the present invention to open and close rising and falling for disk, it can effectively adjust the opposite position between half bulb stopper and venturi type nozzle
It sets, so as to adjust the mode of communicating between the aperture and pump inlet pipe and air-water separation chamber of venturi type nozzle, and then changes whole
The deflation rate of a device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to a kind of novel jet flow self-priming apparatus of the embodiment of the present invention.
Appended drawing reference:
1- jet stream inlet tube；2-U shape pipe curved mouth；3- interlocks grid；The outlet of 4- auxiliary exhaust pipe；The inner cavity 5- gas vent；6-
Inner cavity upper chamber；Anchor ring is supported on 7-；8- auxiliary exhaust pipe；Disk leak holes are opened and closed on 9-；10- upper spring；Spring under 11-；12-
Outer housing；Disk is opened and closed under 13-；Room under the inner cavity 14-；15- auxiliary exhaust pipe import；The outlet of 16-U shape pipe；17-U shape pipe import；
18- air-water separation chamber；19- elasticity thrust bowl；Disk is opened and closed on 20-；Room in the inner cavity 21-；Disk leak holes are opened and closed under 22-；23-
Lower support anchor ring；Half bulb stopper of 24-；25- venturi type nozzle；26- pump inlet pipe.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The orientation or positional relationship of the instructions such as " thickness ", "upper", "lower", " axial direction ", " radial direction ", "vertical", "horizontal", "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be with
Explicitly or implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or
Two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
A kind of novel jet flow self-priming apparatus according to an embodiment of the present invention is specifically described in conjunction with attached drawing first below.
A kind of novel jet flow self-priming apparatus according to an embodiment of the present invention, is installed on pump inlet pipe 26, comprising: outer housing
12 and the air-water separation chamber 18 in outer housing 12, U-tube, jet stream inlet tube 1, airtight cavity, 25 and of the room Wen Qiu nozzle
Auxiliary exhaust pipe 8.
Specifically, referring to Fig. 1, the U-tube outlet 16 of one end of jet stream inlet tube 1 and U-tube is formed and is connected to, jet stream into
140 ° of formation of angle between the axis of mouth pipe 1 and the middle line of U-tube.U-tube is tiltedly mounted on gas-water separation to the right
18 top of room, the upper surface of air-water separation chamber 18 are horizontal plane, and the middle line of U-tube and the upper surface of air-water separation chamber 18 are in 20 °
Angle.When the starting of novel jet flow self-priming apparatus, pressure-air is injected into U-tube curved mouth 2 by jet stream inlet tube 1, flows through U-shaped
It is drained into atmosphere behind pipe outlet 16, since pressure-air high speed flows through U-tube curved mouth 2, is formed at U-tube curved mouth 2 significant
Negative pressure is constantly carried secretly by pressure-air so as to cause the air at U-tube import 17, is drained into atmosphere with U-tube outlet 16,
Further such that gradually forming subnormal ambient in U-tube import 17.
U-tube import 17 is connected to air-water separation chamber 18, with the progress of start-up course, the air water point under the action of pressure difference
It constantly enters in U-tube import 17, is ultimately discharged into atmosphere from the air in room 18, and make shape in air-water separation chamber 18
At subnormal ambient.
Multiple staggeredly grids 3 are equipped in the air-water separation chamber 18, the staggeredly grid 3 uses porous media material system
At the staggeredly grid 3 includes two grid sheets, and two grid sheets intersect, and the acute angle of formation is 50 °, two institutes
The crosspoint for stating grid sheet is the one third of entire staggeredly 3 height of grid at a distance from staggeredly 3 top of grid, staggeredly lattice
Entanglement is distributed grid 3 in all directions in air-water separation chamber 18.Airtight cavity is located at the lower section of air-water separation chamber 18, airtight cavity
In be provided with level and the upper opening and closing disk 20 that is placed in parallel and lower opening and closing disk 13, upper opening and closing disk 20 and lower opening and closing disk
13 inner cavity is integrally divided into inner cavity upper chamber 6,14 three parts of room, the edge packet of upper opening and closing disk 20 under room 21, inner cavity in inner cavity
Multiple upper support anchor rings 7 are wrapped with, the edge wrap of lower opening and closing disk 13 has multiple lower support anchor rings 23, upper 7 appearance of support anchor ring
Face and lower 23 outer surface of support anchor ring are processed using resin material, and with inner cavity wall surface is tangent abuts, upper support anchor ring 7
It is the arc sleeve that section is semi-circular shape with lower support anchor ring 23, the radian of upper support anchor ring 7 is 40 °, lower support anchor ring
35 ° of 23 radian.
Upper opening and closing disk 20 offers the upper opening and closing disk leak holes 9 being tilted to the left, upper opening and closing disk leak holes 9 with it is vertical
Direction is tilted to the left at 25 ° of inclination angles.Lower opening and closing disk 13 offers the lower opening and closing disk leak holes 22 being tilted to the right, under open
Closed disk leak holes 22 are tilted to the right in vertical direction with 30 ° of inclination angles, and upper opening and closing disk leak holes 9 are let out with lower opening and closing disk
Dew 22 diameter ratio of hole is 1:1.5.
Upper 20 lower surface of opening and closing disk is connect with upper spring 10, and diameter is gradually increased so that upper bullet upper spring 10 from top to bottom
Spring 10 is flared, the outer surface at 10 maximum gauge of upper spring with the inner wall of airtight cavity is tangent contacts, 10 bottom end of upper spring
It being connect with lower 11 top of spring, it is in shrink shape that lower 11 diameter of spring, which is gradually reduced, at lower 11 top maximum gauge of spring, lower bullet
The outer surface of spring 11 with inner cavity wall surface is tangent contacts, and the ratio between lower spring 11 and the elasticity modulus of upper spring 10 are 1:1.5, simultaneously
The ratio between angle of throat of the angle of flare of upper spring 10 and lower spring 11 is 1.5:1, and the longitudinal height of upper spring 10 and lower spring 11 are vertical
It is 1.5:1 to the ratio between height.
Upper opening and closing disk 20 is during rising, to prevent upper opening and closing disk 20 and the top of closed containing cavity from touching
It hits, elastic thrust brake is arranged in upper 20 upper surface the center point of opening and closing disk, and elastic thrust brake is elastic thrust in the present embodiment
Bowl 19, elastic thrust bowl 19 are hemisphere bowl-type, and ball internal diameter is 12mm, and ball outer diameter is 20mm.When upper opening and closing disk 20 rises, elasticity
Thrust bowl 19 is contacted with inner cavity top, and is gradually compressed, and impact of the disk 20 to the top of closed containing cavity is opened and closed in buffering.
Lower 13 lower surface of opening and closing disk is equipped with half bulb stopper 24, and half bulb stopper, 24 sphere diameter is 25mm, and half bulb stopper, 24 centre of sphere is downward
It is higher by lower 13 lower surface 3mm of opening and closing disk.Half bulb stopper, 24 surface can be bonded with 25 inner surface of venturi type nozzle completely, with closing
Venturi type nozzle 25.Venturi type nozzle 25 from top to bottom contraction section, diffuser curvature ratio be 2.4:1.
The bottom of air-water separation chamber 18 is connected to two auxiliary exhaust pipes 8, the bottom end of auxiliary exhaust pipe 8 and the room Wen Qiu nozzle
25 connections, auxiliary exhaust pipe 8 are arranged between outer housing 12 and airtight cavity, and side wall of the airtight cavity close to top is equipped with interior
Chamber gas vent 5, inner cavity gas vent 5 are connected to auxiliary exhaust pipe 8 and airtight cavity.
The course of work of the invention:
When starting just starts, half bulb stopper 24 is bonded completely with venturi type nozzle 25, and venturi type nozzle 25 is in closed state,
As start-up course enters the first stage, the negative pressure in air-water separation chamber 18 constantly carries the discharge of the air in auxiliary exhaust pipe 8 secretly,
So that constantly being reduced by the air that inner cavity gas vent 5 is connected to inner cavity upper chamber 6, pressure is gradually decreased, upper opening and closing disk
20 are lifted up, due to being circumferentially evenly distributed with the upper support anchor ring 7 of resin material, surface light in upper opening and closing 20 side of disk
It is sliding, while upper support anchor ring 7 is tangentially contacted with inner cavity wall surface, therefore the resistance that upper opening and closing disk 20 lifts process is smaller, and does not allow
It is also easy to produce overturning.
As upper opening and closing disk 20 constantly lifts, the upper spring 10 and lower spring 11 that upper opening and closing disk 20 connects are by original
Compressive state is gradually brought to nature, and as the high pressure gas in jet stream inlet tube 1 constantly conveys, inner cavity upper chamber 6 is born
Pressure is gradually increased, and upper opening and closing disk 20 continues to lift up, and upper spring 10 and lower spring 11 are converted to tensional state, to open under driving
Half bulb stopper, 24 surface on closed disk 13 is separated with venturi type nozzle 25, but does not completely disengage venturi type nozzle 25, only to pump
Inlet tube 26 is connected to the formation of auxiliary exhaust pipe import 15, and the air in pump is by the small flow of subnormal ambient in air-water separation chamber 18
Entrainment be drained into atmosphere into U-bend.
Subsequent start-up process constantly carries out, and novel jet flow self-priming apparatus enters the second stage of starting, at this point, half bulb stopper 24
Venturi type nozzle 25 is completely disengaged, pump inlet pipe 26 is formed with room 14 under inner cavity by venturi type nozzle 25 and is connected to, pump inlet pipe
In 26 air by it is lower opening and closing disk 13 on lower opening and closing disk leak holes 22, followed by lower spring 11, upper spring 10, on open
Closed disk leak holes 9 enter inner cavity upper chamber 6, are finally entrained into U-bend discharger, convey in whole process
Medium is air.
Then, start-up course enters the phase III, and most of gas has been drained off in pump at this time, and the water level in pump constantly increases
Height, the medium entered in apparatus of the present invention from venturi type nozzle 25 is no longer single air, but carries a large amount of water
Biphase gas and liquid flow.Biphase gas and liquid flow a part enters room 14 under inner cavity by venturi type nozzle 25, is revealed by lower opening and closing disk
Hole 22 enters room 21 in inner cavity, since lower opening and closing disk leak holes 22 are tilted to the right in vertical direction with 30 ° of inclination angles.Therefore,
Biphase gas and liquid flow generates impact when entering lower opening and closing disk leak holes 22 from bottom to top, so that lower opening and closing disk 13 produces level
Around the clockwise torque of central axis on face, and biphase gas and liquid flow from bottom to top into upper opening and closing disk leak holes 9 when equally generate
Impact, but upper opening and closing disk leak holes 9 are in vertical direction with 25 ° of inclination angles, and are tilted to the left, and therefore, biphase gas and liquid flow flows through
After opening and closing disk leak holes 9, so that upper opening and closing disk 20 is produced around the torque that central axis is counterclockwise on horizontal plane, due to above opening
Closed disk 20 rotates in opposite directions with lower opening and closing disk 13, so that the upper spring 10 of two opening and closing disk of connection
It being deformed with lower spring 11, the spacing between two neighboring spring is obviously reduced, and since the section circle of lower spring 11 is straight
Diameter is 1.5 times of the section circle diameter of upper spring 10, and the ratio between lower spring 11 and the elasticity modulus of upper spring 10 are 1:1.5,
Upper spring 10 expands the angle of flare of shape simultaneously and lower spring 11 shrinks the ratio between angle of throat of shape for 1.5:1, and upper spring 10 is longitudinal
The ratio between height and the longitudinal height of lower spring 11 are 1.5:1.Therefore, by setting upper spring 10 between spacing be greater than lower spring 11 it
Between spacing easily collide so that biphase gas and liquid flow is relatively large in diameter and when small-pitch lower spring 11 passing through, gas-liquid
After two phase flow collision, liquid accumulation falls into inner cavity room 21 after rise, gas by gap between lower spring 11, by upper spring 10 it
Between gap, since spacing will be significantly greater than the spacing between lower spring 11 between upper spring 10, air is passing through upper spring
Behind 10 gaps, inner cavity upper chamber 6 is quickly entered after the secondary separation of upper spring 10, and gas-water separation is entered by inner cavity gas vent 5
In room 18.
Since entanglement is dispersed with staggeredly grid 3, the effectively two phase flow to not thorough gas-liquid separation in air-water separation chamber 18
It is disturbed, is sufficiently separated it.Be arranged handed over the crosspoint of grid 3 with entirely staggeredly at a distance from 3 top of grid to hand over
The one third of 3 height of anacoluthon grid, since the two phase flow water content in air-water separation chamber 18 at this time is lower, biphase gas and liquid flow is main
It is distributed in 18 top of air-water separation chamber.Therefore, setting handed over the crosspoint of grid 3 and entirely interlock 3 top of grid at a distance from be
The staggeredly one third of 3 height of grid is conducive to further remove the water in biphase gas and liquid flow.
At the same time, another part biphase gas and liquid flow then passes through venturi type nozzle 25, auxiliary exhaust pipe 8 enters air water
Separation chamber 18 carries out gas-liquid separation.When the biphase gas and liquid flow of high speed flows through inner cavity gas vent 5 in auxiliary exhaust pipe 8, due to
Fast speed generates negative pressure at inner cavity gas vent 5, realizes the reentrainment to gas in inner cavity upper chamber 6, improve exhaust
Efficiency, biphase gas and liquid flow enter in U-tube after the grid 3 that interlocks, and the density at U-tube curved mouth 2 due to water is larger,
Water is separated under the influence of centrifugal force, is fallen after rise to air-water separation chamber 18, and the air isolated is in jet stream inlet tube 1
Pressure-air be drained into atmosphere.
Start fourth stage, be only left a small amount of air in pump, stops at this time empty to conveying high-pressure in jet stream air inlet pipe 1
Gas, the water isolated in U-bend are fallen back in air-water separation chamber 18, and the moisture that air-water separation chamber 18 accumulates is that two parts flow back
To pump inlet pipe 26, a part flows back into venturi type nozzle 25 by auxiliary exhaust pipe 8, into pump inlet pipe 26；And another portion
Divide and fall back to opening and closing disk 20 by after auxiliary exhaust pipe 8, flowing through inner cavity gas vent 5, is discharged by upper opening and closing disk leak holes 9
The water of room 21 into inner cavity, the accumulation of upper opening and closing 20 upper surface of disk increases, and upper opening and closing disk 20 is gradually reduced.Meanwhile water flow from
On downwards by upper opening and closing disk leak holes 9 when, since upper opening and closing disk leak holes 9 are in vertical direction with 25 ° of inclination angles, and to the left
Inclination, therefore, biphase gas and liquid flow flow through opening and closing disk leak holes 9 after so that upper opening and closing disk 20 produce on horizontal plane around
The clockwise torque of central axis, and recirculation water from bottom to top enter lower opening and closing disk leak holes 22 when generate impact, opened due under
Closed disk leak holes 22 are tilted to the right in vertical direction with 30 ° of inclination angles so that lower opening and closing disk 13 produce on horizontal plane around
The torque that central axis is counterclockwise.Since upper opening and closing disk 20 and lower opening and closing disk 13 rotate in opposite directions, thus
So that the upper spring 10 of two opening and closing disk of connection and lower spring 11 are deformed, the spacing between upper spring 10 and lower spring 11 is bright
Aobvious to increase, water energy passes rapidly through upper spring 10 and lower spring 11, falls after rise to lower opening and closing disk 13, through lower opening and closing disk leak holes
22, venturi type nozzle 25 is fallen after rise to pump inlet pipe 26.
Accumulate a certain amount of water respectively on upper opening and closing disk 20 and lower opening and closing disk 13 at this time, water weight and on open
Under closed disk 20, the lower gravity for opening and closing circle upper spring 10 and lower spring 11 itself, upper opening and closing disk 20 and lower opening and closing disk
13 gradually fall to inner cavity bottom end, and half bulb stopper, 24 surface is fitted closely with 25 inner surface of venturi type nozzle, and venturi type nozzle 25 is certainly
Curvature ratio up to lower contraction section, diffuser is 2.4:1, is conducive to the sealing of the two using the contraction section of greater curvature.Under
Open and close disk 13 fall after rise after, lower 13 lower surface of opening and closing disk is not bonded with inner chamber bottom surface, due to it is lower support anchor ring 23 effect,
So that lower support anchor ring 23 is in compressive state, facilitating starting next time, opening and closing disk 13 can bounce in time at present, improve again
Rate when starting.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (10)
1. a kind of novel jet flow self-priming apparatus, which is characterized in that be installed on pump inlet pipe (26), comprising:
Air-water separation chamber (18)；
U-tube is obliquely installed in the top of the air-water separation chamber (18), the U-tube import (17) of the U-tube and the gas
Water separation chamber (18) connection；
Jet stream inlet tube (1), one end of the jet stream inlet tube (1) are connected to the U-tube curved mouth (2) of the U-tube；
Airtight cavity is located at the lower section of the air-water separation chamber (18)；
The room Wen Qiu nozzle (25) is vertically arranged at the lower section of the airtight cavity, the top of the room Wen Qiu nozzle (25) and institute
Airtight cavity connection is stated, bottom end is connected to pump inlet pipe (26)；
Auxiliary exhaust pipe (8), positioned at the outside of the airtight cavity, the top of the auxiliary exhaust pipe (8) and the closed chamber
Body connection, bottom end are connected to the room Wen Qiu nozzle (25), and side wall of the airtight cavity close to top is vented equipped with inner cavity
Hole (5), the inner cavity gas vent (5) are connected to the auxiliary exhaust pipe (8) and the airtight cavity；
Wherein, upper opening and closing disk (20), lower opening and closing disk (13), upper spring (10), lower spring are equipped in the airtight cavity
(11), elastic thrust brake and half bulb stopper (24), the upper opening and closing disk (20) and the lower opening and closing disk (13) are parallel to each other,
And can be slided along the inner wall of the airtight cavity, and the airtight cavity is divided into inner cavity upper chamber (6), in inner cavity room (21)
With inner cavity upper chamber (6), the top of the upper spring (10) is connect with the upper opening and closing disk (20), the bottom of the upper spring (10)
End is connect with the top of the lower spring (11), and the bottom end of the lower spring (11) is connect with the lower opening and closing disk (13), institute
It states opening and closing disk (20) and is equipped with upper opening and closing disk leak holes (9), the lower opening and closing disk (13) is equipped with lower opening and closing disk
Leak holes (22), it is described it is upper opening and closing disk leak holes (9) and it is lower open and close disk leak holes (22) axis with the closed chamber
The axis of body tilts, and inclined direction is opposite；The elasticity thrust brake is located at the upper surface of upper opening and closing disk (20), institute
State the lower surface that half bulb stopper (24) are located at lower opening and closing disk (13), when original state, the upper spring (10) and it is described under
Spring (11) is in compressive state, and half bulb stopper (24) is located in the room Wen Qiu nozzle (25), and half bulb stopper
(24) outer surface can be bonded with venturi type nozzle (25) inner surface, block the venturi type nozzle (25) with it is described close
Closed chamber body and the auxiliary exhaust pipe (8) connection.
2. novel jet flow self-priming apparatus according to claim 1, which is characterized in that be additionally provided with branch in the airtight cavity
Pushing out ring face (7) and lower support anchor ring (23), the upper support anchor ring (7) and the lower support anchor ring (23) are arc sleeve,
And section is semi-circular shape, the edge of upper support anchor ring (7) package upper opening and closing disk (20), the lower support anchor ring
(23) the lower opening and closing disk (13) is wrapped up, the upper support anchor ring (7) and lower support anchor ring (23) outer surface are and institute
State the tangent conflict of inner wall of airtight cavity.
3. novel jet flow self-priming apparatus according to claim 1, which is characterized in that be equipped in the air-water separation chamber (18)
Multiple staggeredly grid (3) staggeredly grid (3) are made of porous media material, and described staggeredly grid (3) include two lattice
Grid, two grid sheets intersect, and the acute angle of formation is 50 °, and the crosspoint of two grid sheets interlocks with described
The distance on grid (3) top is the one third of entire staggeredly grid (3) height.
4. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the diameter of the upper spring (10) is from upper
Be gradually increased under, the outer surface of upper spring (10) bottom end with the inner wall of the closed containing cavity is tangent contacts, the lower bullet
The diameter of spring (11) is gradually reduced from top to bottom, the outer surface on lower spring (11) top and the inner wall phase of the closed containing cavity
Cut-grafting touching.
5. novel jet flow self-priming apparatus according to claim 4, which is characterized in that the lower spring (11) and the upper bullet
The ratio between elasticity modulus of spring (10) is 1:1.5, the angle of throat of the angle of flare of the upper spring (10) and the lower spring (11) it
Than for 1.5:1, the ratio between longitudinal height of the upper spring (10) and longitudinal height of the lower spring (11) are 1.5:1.
6. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the elasticity thrust brake stops for elasticity
It pushes away bowl (19), the elasticity thrust bowl (19) is hemisphere bowl-type, and the ball internal diameter of the elasticity thrust bowl (19) is 12mm, ball outer diameter
For 20mm.
7. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the venturi type nozzle (25) with it is described
Closed containing cavity coaxial arrangement, the inner wall of the venturi type nozzle (25) are arcwall face, the venturi type nozzle (25) from up to
It down include contraction section and diffuser, the curvature ratio of the contraction section and the diffuser is 2.4:1.
8. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the upper opening and closing disk leak holes (9)
Angle between axis and the axis of the airtight cavity is 25 °, it is described it is lower opening and closing disk leak holes (22) axis with it is described
Angle between the axis of airtight cavity is 30 °, and the diameter of upper opening and closing disk leak holes (9) is let out with the lower opening and closing disk
The diameter ratio for revealing hole (22) is 1:1.5.
9. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the axis of the jet stream inlet tube (1)
Angle between the center line of the U-tube is 140 °, the center line of the U-tube and the air-water separation chamber (18)
Angle between upper surface is 20 °.
10. novel jet flow self-priming apparatus according to claim 1, which is characterized in that the sphere diameter of half bulb stopper (24) is
25mm, the centre of sphere of half bulb stopper (24) are higher by the lower surface 3mm of lower opening and closing disk (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910189454.0A CN110043474B (en) | 2019-03-13 | 2019-03-13 | Novel jet self-priming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910189454.0A CN110043474B (en) | 2019-03-13 | 2019-03-13 | Novel jet self-priming device |
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| CN110043474A true CN110043474A (en) | 2019-07-23 |
| CN110043474B CN110043474B (en) | 2024-06-07 |
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| RU2351805C1 (en) * | 2007-12-12 | 2009-04-10 | Закрытое акционерное общество "Гидрогаз" | Self-priming centrifugal pump |
| CN108843800A (en) * | 2018-06-20 | 2018-11-20 | 江苏大学 | A kind of disk entraining type self-priming valve |
| CN109404296A (en) * | 2018-12-18 | 2019-03-01 | 望江县同心农业专业合作社 | A kind of field irrigation centrifugal pump |
| CN110397599A (en) * | 2019-07-19 | 2019-11-01 | 江苏大学 | A kind of self-priming starter applied to centrifugal pump |
| CN210087616U (en) * | 2019-03-13 | 2020-02-18 | 江苏大学 | Novel jet self-suction device |
| CN113107858A (en) * | 2021-04-13 | 2021-07-13 | 江苏大学镇江流体工程装备技术研究院 | Be applied to quick starting drive of centrifugal pump |
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2019
- 2019-03-13 CN CN201910189454.0A patent/CN110043474B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2351805C1 (en) * | 2007-12-12 | 2009-04-10 | Закрытое акционерное общество "Гидрогаз" | Self-priming centrifugal pump |
| CN108843800A (en) * | 2018-06-20 | 2018-11-20 | 江苏大学 | A kind of disk entraining type self-priming valve |
| CN109404296A (en) * | 2018-12-18 | 2019-03-01 | 望江县同心农业专业合作社 | A kind of field irrigation centrifugal pump |
| CN210087616U (en) * | 2019-03-13 | 2020-02-18 | 江苏大学 | Novel jet self-suction device |
| CN110397599A (en) * | 2019-07-19 | 2019-11-01 | 江苏大学 | A kind of self-priming starter applied to centrifugal pump |
| CN113107858A (en) * | 2021-04-13 | 2021-07-13 | 江苏大学镇江流体工程装备技术研究院 | Be applied to quick starting drive of centrifugal pump |
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|---|---|
| CN110043474B (en) | 2024-06-07 |
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