CN107387398A - A kind of fracturing pump pump head auxiliary body - Google Patents
A kind of fracturing pump pump head auxiliary body Download PDFInfo
- Publication number
- CN107387398A CN107387398A CN201710727951.2A CN201710727951A CN107387398A CN 107387398 A CN107387398 A CN 107387398A CN 201710727951 A CN201710727951 A CN 201710727951A CN 107387398 A CN107387398 A CN 107387398A
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- CN
- China
- Prior art keywords
- cylinder body
- feedboard
- fracturing
- piston
- marker board
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of fracturing pump pump head auxiliary body, including cylinder body and piston rod, one end activity of piston rod through an end face of cylinder body and is connected with piston, and the other end of piston rod and the power end of fracturing pump connect；Discharge gate and charging aperture are provided with cylinder body, and cylinder body has been respectively communicated with drainage conduit and feed pipe by discharge gate and charging aperture；Also include the marker board to match with discharge gate, the feedboard to match with charging aperture, at the top of marker board above cylinder body, the bottom surface of marker board is located in cylinder body and hinge connection has second connecting rod, feedboard is hingedly connected on the inner surface of cylinder body close to one end of piston, and the upper surface upper hinge of feedboard is connected with first connecting rod；First connecting rod, second connecting rod hinge connection have fix bar, and fix bar is fixed on piston.Spring force caused by spring fatigue is avoided by way of connecting rod declines, fracturing fluid suction output quantity reduces, and causes the process costs of fracturing technology to increase, efficiency reduces.
Description
Technical field
The present invention relates to field of petroleum exploitation, and in particular to a kind of fracturing pump pump head auxiliary body.
Background technology
In the evolution of human civilization, oil plays very important role.But oil belongs to non-renewable resources,
The demand of oil is increased year by year at present simultaneously, result in the oil reserve amount in oil field constantly reduces, and is in for most of
The oil field of middle and later periods, the oil amount obtained by conventional recovery method is seldom, therefore introduces fracturing technology in these oil fields to improve
Oil production rate.
The fracturing unit used in fracturing technology, such as fracturing pump are one of capital equipments for improving oil production rate.Pressure break
Pump can transport fracturing fluid to shaft bottom, and causing the rock break in shaft bottom, increase oil is on stratum so as to improve oil permeability
The quick flowing of lower section is to improve oil productivity.With the raising that people are required oil productivity, fracturing pump is also towards high-power, high
Pressure, huge discharge, output medium be diversified, multi-functional development.
The structure of fracturing pump is broadly divided into power end and fluid end two parts.Wherein, power end generally use crank connecting link
Rotational energy is changed into straight reciprocating motion energy transmission to piston by mechanism, the conventional parts of power end include input shaft,
Bent axle, connecting rod, crosshead, Jie's bar；Fluid end is also referred to as pump head, mainly including cylinder body, cylinder sleeve, piston rod, piston, inlet valve,
The parts such as dump valve.Compared to power end, fluid end is not only expensive and is easily damaged, because fluid end subjects high pressure
With the corrosion of fracturing fluid.
Inlet valve and dump valve are the check valve for being provided with spring used by traditional fracturing pump.When fracturing pump sucks
During fracturing fluid, fracturing fluid is washed open inlet valve and entered in cylinder body by the pressure differential inside and outside cylinder body；Subsequent fracturing fluid is with cylinder body
Internal volume diminish pressure increase and push dump valve open and enter discharge line.But because inlet valve and dump valve use spring
Mechanism, spring is easily tired during continually sucking for a long time and discharging fracturing fluid, and elasticity weakens, and not only increases pump
The repair rate of head, the service life for shortening fracturing pump, also reduce the efficiency of fracturing technology.
The content of the invention
It is an object of the invention to provide a kind of fracturing pump pump head auxiliary body, with solve in the prior art fracturing pump in length
Spring is easily tired during time continually sucks and discharged fracturing fluid, elasticity weaken, improve pump head repair rate,
Shorten the service life of fracturing pump, reduce the problem of fracturing technology efficiency.
The present invention is achieved through the following technical solutions：A kind of fracturing pump pump head auxiliary body, including cylinder body and piston rod, it is living
One end activity of stopper rod through an end face of cylinder body and is connected with the piston positioned at cylinder interior, the other end and pressure of piston rod
Split the power end connection of pump；Discharge gate and charging aperture are provided with cylinder body, and cylinder body is respectively communicated with by discharge gate and charging aperture
There are drainage conduit and feed pipe；Also include the marker board to match with discharge gate, the feedboard to match with charging aperture, marker board top
Portion is located above cylinder body, and the bottom surface of marker board be located at that cylinder body is interior and hinge connection has a second connecting rod, feedboard close to piston one
End is hingedly connected on the inner surface of cylinder body, and the upper surface upper hinge of feedboard is connected with first connecting rod；First connecting rod, second connect
Bar hinge connection has fix bar, and fix bar is fixed on piston.
In the prior art, inlet valve and dump valve are the check valve for being provided with spring used by fracturing pump.Work as pressure break
When pumping enters fracturing fluid, fracturing fluid is washed open inlet valve and entered in cylinder body by the pressure differential inside and outside cylinder body；Subsequent fracturing fluid with
Cylinder body internal volume diminish pressure increase and push dump valve open and enter discharge line.But because inlet valve and dump valve are adopted
With spring mechanism, spring is easily tired during continually sucking for a long time and discharging fracturing fluid, and elasticity weakens, and causes to press
The suction and discharge rate for splitting liquid are reduced, therefore irregularly fracturing pump pump head must not be overhauled, and not only increase process costs, also
Reduce the efficiency of fracturing technology.Therefore, in order to solve the above problems, the present invention provides a kind of fracturing pump pump head auxiliary body, should
Auxiliary body is changed into reciprocating motion by piston by traditional by way of spring mechanism realizes suction, discharge fracturing fluid
Drive link mechanism, so as to realize the switch of charging aperture and discharge gate, the problem of spring fatigue will not be produced.
Specifically, it is that the present invention also includes cylinder body, piston, piston rod, charging with traditional pressure break pump hydraulic end identical
Mouth, feed pipe, discharge gate and drainage conduit, the connected mode of above-mentioned part and the housing structure class of existing pressure break pump hydraulic end
Seemingly.Unlike, piston towards feed pipe, drainage conduit end face on be fixedly connected with fix bar, the fix bar and piston
Fixed form the mode such as include and be not limited to be screwed, weld.Fix bar upper hinge is connected with first connecting rod and second and connected
Bar, while hinge connection has feedboard and marker board respectively for first connecting rod and second connecting rod, marker board is cut with scissors close to one end of piston
Chain link is on the inwall of cylinder body.Above-mentioned hinge connection is also known as be hinged, refer to can allow for two interconnections parts it
Between make the connected mode of relative rotation, such as connected by loose-leaf.The size of above-mentioned feedboard and marker board is respectively at charging
Mouth, the size of discharge gate match, and specifically, feedboard can cover charging aperture, and marker board can cover discharge gate, but simultaneously
The diameter that marker board is located at the part in discharge gate is less than discharge gate, so that fracturing fluid can discharge from discharge gate, and in advance
That stops that enough working clearances make between marker board and second connecting rod be hinged is unlikely to block in discharge gate.Preferably, discharge
The part that mouth contacts with marker board can be arranged at the groove that discharge board diameter matches so that be moved backward in piston, second
When connecting rod dragging marker board is downward, marker board can fall in the groove set on marker board.
During work, acted on by power end toggle, piston rod band piston moves reciprocatingly in cylinder body.
When piston moves to power end, fix bar moves with piston to power end, so that between first connecting rod and second connecting rod
Angle reduces, and second connecting rod pulls downwards marker board, seals discharge gate, and first connecting rod pulls feedboard, opens charging aperture, cylinder body
Inside and outside pressure causes fracturing fluid to be pressed into cylinder body；When piston moves to charging aperture, discharge gate direction, fix bar is similarly
To be moved to the direction so that the increase of angle between first connecting rod and second connecting rod, top begins to rehearse flitch second connecting rod upwards, and first
Connecting rod promotes feedboard, it is closed charging aperture, so as to which fracturing fluid can extrude cylinder body by the pressure in cylinder body, into discharge
Pipe.Inlet valve, dump valve compared to traditional pressure break pump hydraulic end are avoided by the way of spring mechanism by way of connecting rod
Spring force caused by spring fatigue declines, fracturing fluid suction output quantity reduces, cause the process costs of fracturing technology to increase,
Efficiency reduces, and has universal application value.Meanwhile linkage is with the reciprocating motion folding feedboard or discharge of piston
Plate, it is not that complete depended on pressure official post obtains fracturing fluid and washes inlet valve or dump valve open, when needing to suck fracturing fluid, piston
Backward, i.e., moved to power end, open feedboard, the impact of the fracturing fluid suffered by feedboard greatly reduces；And need to exclude
During fracturing fluid, piston moves forward, and the flitch that begins to rehearse is pushed up, without washing marker board, the pressure break that marker board is subject to open by fracturing fluid completely
The impact of liquid is also greatly reduced, and to sum up, by linkage, the impact from fracturing fluid that marker board and feedboard are subject to can
It is greatly reduced, extends the service life of equipment, reduces the cost of fracturing technology.
Further, the axis of fix bar and piston rod is overlapped.Above-mentioned design causes the axis of fix bar to wear
Cross the center of circle of piston end surface.By above-mentioned design, one side fix bar can preferably drive first connecting rod and second connecting rod, separately
One side first connecting rod, second connecting rod also can be relatively uniform to the active force of feedboard, marker board.
Further, marker board includes upper and lower part, and the section of marker board is T-shaped, the portion that marker board contacts with cylinder body
Set up separately and be equipped with cushion pad.The section of marker board is that T-shaped refers to that marker board is top, bottom two parts composition, and two parts are circle
Cylinder, the effect on marker board top are to realize the connection or closing to discharge gate, and the effect of marker board bottom is be hinged second
Connecting rod, while can also guide movement of the marker board in discharge gate.Marker board top is located at the top of cylinder body discharge gate, discharge
Plate bottom, which is located in cylinder body, to be easy to be hinged with second connecting rod.The part that the lower surface on marker board top contacts with cylinder body is provided with slow
Punching pad, cushion pad can not only play a part of buffering, and excessive impulse force causes parts when avoiding marker board from closing discharge gate
Damage, while can also further improve sealing function, it is preferable that cushion pad be arranged on set on discharge gate with discharge board foot
In the very little groove to match.
Further, marker board upper diameter is 1.5-2.5 times of lower diameter.Found by putting into practice, marker board top
The unlatching of marker board and sealing effect are best at 1.5-2.5 times of a diameter of lower diameter.
Further, it is provided with cushion pad on the movable end of the feedboard.Feedboard one end is hinged on the inwall of cylinder body
On, the other end is movable end, and cushion pad is provided with movable end can avoid feedboard from being sent out when closing charging aperture with inboard wall of cylinder block
Raw sharp impacts, feedboard or linkage is caused to damage, meanwhile, cushion pad can also play certain sealing function.It is preferred that
Ground, when feedboard is in the position of closing charging aperture, holding tank is opened up on cylinder body, the height of holding tank is equal on movable end
The thickness of cushion pad.
Further, 1.3-1.5 times of a diameter of intake port of feedboard.If the diameter of feedboard is excessive,
Either open or during tube wall feedboard, feedboard can all be increased by the resistance of fracturing fluid, be unfavorable for connecting rod to feedboard
Control, easily cause linkage damage；If the diameter of feedboard is too small, sealing effect is bad.To sum up, sent out by putting into practice
Existing, effect is best at 1.3-1.5 times of a diameter of intake port of feedboard.
Further, the movable end of feedboard is fillet.The movable end of feedboard is arranged into fillet can equally reduce
Feedboard suffered resistance from fracturing fluid when being turned on and off.
Further, cushion pad is made up of rubber.
Further, the diameter of feed pipe gradually increases along one end away from cylinder body to one end close to cylinder body.Due to straight
Footpath gradually increases, and speed when fracturing fluid enters cylinder body decreases, and impulse force also accordingly declines, and avoids too fast speed to charging
Plate impacts.
Further, diameter of the feed pipe away from cylinder body one end is proximate to 1.2 times of the diameter of cylinder body one end.Pass through practice
It was found that when diameter of the feed pipe away from cylinder body one end is proximate to 1.2 times of the diameter of cylinder body one end, fracturing fluid is to feedboard bottom
The impact energy in face effectively reduces.
The present invention compared with prior art, has the following advantages and advantages：
1st, by the way of spring mechanism, the present invention passes through for the inlet valve compared to traditional pressure break pump hydraulic end, dump valve
The spring force that the mode of connecting rod is avoided caused by spring fatigue declines, fracturing fluid suction output quantity reduces, and causes fracturing technology
Process costs increase, efficiency reduce, there is universal application value；
2nd, linkage of the invention is with the reciprocating motion folding feedboard or marker board of piston, marker board and feedboard
The impact from fracturing fluid being subject to can be greatly reduced, and extend the service life of equipment, reduce the cost of fracturing technology；
3rd, 1.3-1.5 times of a diameter of intake port of feedboard of the invention, if the diameter of feedboard is excessive,
Either open or during tube wall feedboard, feedboard can all be increased by the resistance of fracturing fluid, be unfavorable for connecting rod to feedboard
Control, easily cause linkage damage, if the diameter of feedboard is too small, sealing effect is bad.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the present invention.
Mark and corresponding parts title in accompanying drawing：
1- cylinder bodies, 2- pistons, 3- piston rods, 4- fix bars, 5- first connecting rods, 6- second connecting rods, 7- feedboards, 8- discharges
Plate, 9- drainage conduits, 10- feed pipes.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1：
A kind of fracturing pump pump head auxiliary body as shown in Figure 1, including cylinder body 1 and piston rod 3, one end of piston rod 3 are lived
A dynamic end face for running through cylinder body 1 and the piston 2 being connected with inside cylinder body 1, the other end of piston rod 3 and moving for fracturing pump
Power end connects；Discharge gate and charging aperture are provided with cylinder body 1, and cylinder body 1 has been respectively communicated with by the discharge gate and charging aperture
Drainage conduit 9 and feed pipe 10；Also include the marker board 8 to match with discharge gate, the feedboard 7 to match with charging aperture, discharge
The top of plate 8 is positioned at the top of cylinder body 1, and the bottom surface of marker board 8 is located in cylinder body 1 and hinge connection has second connecting rod 6, and feedboard 7 leans on
One end of nearly piston 2 is hingedly connected on the inner surface of cylinder body 1, and the upper surface upper hinge of feedboard 7 is connected with first connecting rod 5；
First connecting rod 5, the hinge connection of second connecting rod 6 have fix bar 4, and fix bar 4 is fixed on the piston 2；Fix bar 4 and piston rod 3
Axis is overlapped；Marker board 8 includes upper and lower part, and the section of marker board 8 is T-shaped, and marker board 8 contacts with cylinder body 1
Part is provided with cushion pad；The upper diameter of marker board 8 is 1.5-2.5 times of lower diameter；It is provided with the movable end of feedboard 7
Cushion pad；1.3-1.5 times of a diameter of intake port of feedboard 7；The movable end of feedboard 7 is fillet.Cushion pad is by rubber
Glue is made；The diameter of feed pipe 10 gradually increases along one end away from cylinder body 1 to one end close to cylinder body 1；Feed pipe 10 is remote
The diameter of the one end of cylinder body 1 is proximate to 1.2 times of the diameter of the one end of cylinder body 1.
In use, when needing to suck fracturing fluid, acted on by power end toggle, piston rod 3, which drives, lives
Plug 2 moves reciprocatingly in cylinder body 1.When piston 2 moves to power end of fracturing pump, fix bar 4 is moved with piston 2 to power end
Dynamic, so that the angle between first connecting rod 5 and second connecting rod 6 reduces, second connecting rod 6 pulls downwards marker board 8, seals discharge
Mouthful, first connecting rod 5 pulls feedboard 7, opens charging aperture, and the pressure differential inside and outside cylinder body 1 causes fracturing fluid to be pressed into cylinder body 1；
When piston 2 moves to charging aperture, discharge gate direction, fix bar 4 similarly moves to the direction so that first connecting rod 5 and the
Angle increase between two connecting rods 6, second connecting rod 6 push up the flitch 8 that begins to rehearse upwards, and first connecting rod 5 promotes feedboard 7, makes its closing
Charging aperture, so as to which fracturing fluid can extrude cylinder body by the pressure in cylinder body 1, into drainage conduit 9.The present apparatus is by way of connecting rod
Spring force caused by avoiding spring fatigue declines, fracturing fluid suction output quantity reduces, and causes the process costs of fracturing technology
Increase, efficiency reduce, and have universal application value.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of fracturing pump pump head auxiliary body, including cylinder body (1) and piston rod (3), one end activity of the piston rod (3) are passed through
Wear an end face of cylinder body (1) and be connected with positioned at the internal piston (2) of cylinder body (1), the other end and fracturing pump of piston rod (3)
Power end connection；Discharge gate and charging aperture are provided with cylinder body (1), and cylinder body (1) passes through the discharge gate and charging aperture point
Drainage conduit (9) and feed pipe (10) are not communicated with；Characterized in that, also include match with discharge gate marker board (8), with entering
The feedboard (7) that material mouth matches, above cylinder body (1), the bottom surface of marker board (8) is located at cylinder at marker board (8) top
In body (1) and hinge connection has second connecting rod (6), and the feedboard (7) is hingedly connected at cylinder body close to one end of piston (2)
(1) on inner surface, the upper surface upper hinge of feedboard (7) is connected with first connecting rod (5)；The first connecting rod (5), second connect
Bar (6) hinge connection has fix bar (4), and the fix bar (4) is fixed on piston (2).
2. a kind of fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the fix bar (4) is with living
The axis of stopper rod (3) is overlapped.
3. a kind of fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the marker board (8) includes
Upper and lower part, the section of marker board (8) is T-shaped, and the part that marker board (8) contacts with cylinder body (1) is provided with cushion pad.
A kind of 4. fracturing pump pump head auxiliary body according to claim 3, it is characterised in that marker board (8) upper diameter
For 1.5-2.5 times of lower diameter.
A kind of 5. fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the work of the feedboard (7)
Cushion pad is provided with moved end.
A kind of 6. fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the feedboard (7) it is straight
Footpath is 1.3-1.5 times of intake port.
A kind of 7. fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the work of the feedboard (7)
Moved end is fillet.
8. a kind of fracturing pump pump head auxiliary body according to any one of claim 3~5, it is characterised in that described slow
Punching pad is made up of rubber.
A kind of 9. fracturing pump pump head auxiliary body according to claim 1, it is characterised in that the feed pipe (10) it is straight
Footpath gradually increases along one end away from cylinder body (1) to one end close to cylinder body (1).
10. a kind of fracturing pump pump head auxiliary body according to claim 9, it is characterised in that the feed pipe (10) is remote
Diameter from cylinder body (1) one end is proximate to 1.2 times of diameter of cylinder body (1) one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727951.2A CN107387398B (en) | 2017-08-23 | 2017-08-23 | Fracturing pump head complementary unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710727951.2A CN107387398B (en) | 2017-08-23 | 2017-08-23 | Fracturing pump head complementary unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387398A true CN107387398A (en) | 2017-11-24 |
| CN107387398B CN107387398B (en) | 2022-06-10 |
Family
ID=60352617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710727951.2A Active CN107387398B (en) | 2017-08-23 | 2017-08-23 | Fracturing pump head complementary unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387398B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | Semi-flexible integrated valve active piezoelectric pump |
| CN112196778A (en) * | 2020-10-06 | 2021-01-08 | 长春工业大学 | Herringbone integrated valve piezoelectric pump |
| CN112196754A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Integrative valve piezoelectric pump based on rhombus mechanism of enlargiing |
| CN112196771A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Slope type integrated valve piezoelectric pump |
| CN113339537A (en) * | 2021-04-29 | 2021-09-03 | 江苏顺达机械设备有限公司 | Convenient type bulkhead gate |
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| CN207145218U (en) * | 2017-08-23 | 2018-03-27 | 四川达灿石油设备有限公司 | Servicing unit applied to pressure break pump hydraulic end |
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| GB9824908D0 (en) * | 1998-11-14 | 1999-01-06 | Green Vernon F T | Air pump compressor |
| FR2906332A1 (en) * | 2006-09-26 | 2008-03-28 | Jean Christrian Robert | DEVICE FOR TRANSFORMING A LINEAR MOVEMENT INTO A ROTATION MOTION IN AN ADJUSTABLE MANNER |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | Semi-flexible integrated valve active piezoelectric pump |
| CN112196771A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Slope type integrated valve piezoelectric pump |
| CN112196754A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Integrative valve piezoelectric pump based on rhombus mechanism of enlargiing |
| CN112196754B (en) * | 2020-10-04 | 2022-06-17 | 长春工业大学 | Integrative valve piezoelectric pump based on rhombus mechanism of enlargiing |
| CN112196778A (en) * | 2020-10-06 | 2021-01-08 | 长春工业大学 | Herringbone integrated valve piezoelectric pump |
| CN113339537A (en) * | 2021-04-29 | 2021-09-03 | 江苏顺达机械设备有限公司 | Convenient type bulkhead gate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107387398B (en) | 2022-06-10 |
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